MX2008008801A - Actuating device for shut-off needles in injection moulding devices comprising needle shut-off nozzles - Google Patents

Abstract

The invention relates to an actuating device (10) for shut-off needles in injection moulding tools comprising needle shut-off nozzles. Said actuating device has at least one travelling element (20), to which at least two shut-off needles (16) can be fixed and at least one actuating element (30), which is mounted so that it can be displaced longitudinally in a first direction (R1) and is coupled to the travelling element (20) in such a way that a displacement of the actuating element (30) in the first direction (R1) is converted into a displacement of the travelling element (20) in a second direction (R2) running transversally to said first direction (R1). To achieve the accurate and permanently reliable guidance of the sliding mechanism, according to the invention the actuating element (30), which slides in a guide unit (90) in the first direction (R1), is provided with an additional force-guided element (50).

Description

DRIVE DEVICE FOR CLOSURE NEEDLES IN INJECTION MOLDING DEVICES COMPRISING NOZZLES CLOSURE OF NEEDLES FIELD OF THE INVENTION The invention relates to an operation device or drive for closing needles in injection molding devices with needle closure nozzles according to the general concept of claim 1, as well as a mold or matrix for injection molding according to claim 18. BACKGROUND OF THE INVENTION The needle closure nozzles are placed in molds or dies for injection molding, to conduct a mass flowing at a temperature predeterminable under high pressure in a removable mold insert. They mainly have locking needles that are driven pneumatically, hydraulically or electrically, which periodically open and close the openings of the cast part in the mold insert. Each closing needle is arranged for axial displacement in the lateral region of the mold or matrix of the injection molding device and in the lateral region of the nozzles preferably, therefore, it is conducted through a flow channel for the mass that it works The flow channel terminates in a nozzle end piece that forms an outlet opening of the nozzle. In the closed position, the lower end holds the closing needle in an airtight position, which conforms to the end piece of the nozzle or to the mold insert. In order for multiple needle lock nozzles to be able to open and close synchronously in a die or stamp, it is known, for example, from EP-A1-0 790 116, that the closure needles are fixed to a carrier plate together, which leads a lifting movement in the longitudinal direction of the closing needles. The carrier plate is disposed at the front between two fixed stops and laterally between two guide strips, which are placed in longitudinal movement within a fixing plate and have sliding and sliding cams arranged diagonally on their lateral surfaces that are directed towards the plates carriers. The latter are attached laterally to the carrier plate, which is equipped with grooves that run diagonally. The strips or driving moldings are lifted by means of an impeller in the longitudinal direction from one side to the other, the carrier plates are moved to it perpendicularly from top to bottom. In a mold or die for injection molding, with multiple needle closure nozzles, known from DE-AI-198 11 880, each closure needle is fixed to a separate needle-carrying member. The latter are equipped on two flat sides that face each other with guide cams that lie diagonally, which in the grooves that run diagonally fix a trolley. Below the flat sides a cylindrical section is formed in each needle-bearing element, which in the technique of a lifting piston is placed in axial displacement in a driving hub. The trolley moves from one side to the other, the individual needle-carrying elements for this move up and down. DE-A1-199 07 116 discloses an operating mechanism formed between two tool plates for pressure-molded valve elements. The individual valve spigots of a group of nozzles are held in a plate of valve spikes collectively, which are provided with a guide bushing and the guide pins running parallel to the valve spindles can be moved up and to the side. down. Two drive rods, which carry multiple lateral sliding blocks, are fixed to the plates of the valve pins. The latter hold two cam elements in grooves running diagonally, which are slid longitudinally between the plates of the upper mold or matrix and in each of the support plates. With this, the lateral guide or guide strips inside the drive device do not deny that all the parts or constituent elements must be fixed in a precise manner and must always be positioned exactly in the mold or matrix. This is especially problematic, when the lifting carrier plate is formed relatively wide. In addition, when the strips or driving moldings lie next to each other, both can be presented for the advancement of one or the other strip. Construction elements underestimate that it can lead to malfunctions or even damage. In addition, the carrier plates or the valve stem do not slide up and down precisely, because diagonally arranged slides or cams are loaded unevenly. The object of the invention is to construct a compact operation or drive device for injection molding molds or dies with needle closing nozzles, which drive all the valve needles always with synchronous movement and with equal closing force. A flexible and simple construction is particularly intended for handling, where extensions and / or subsequent modifications can be made at a good cost. 0BREVE DESCRIPTION OF THE INVENTION The main features of the invention are provided in the characterization part of claim 1 and in claim 18. The embodiments are the subject matter of claims 2 to 17 and 19 to 27. In a driving device for closing needles in molds or injection molding dies with needle closing nozzles, with at least one movable or lifting element, to which at least two closing needles can be fixed, and with at least one operating element located longitudinally displaceable in a first direction, which engages with the lifting element, which translates or transforms a movement of the actuating element along the first direction in a movement of the lifting element in a second direction running transversely to the first direction, the invention establishes that the driving element that is driven in a sliding manner along the first direction in a driving device, it is equipped with an additional forced conduction. In this way, an always stable and stable driving of the drive element in the driving device is ensured. A tilting or tilting of the drive element that moves back and forth in the first direction is excluded. The drive device works in a durable and accurate manner, where the construction is carried out in a simple way to handle and at a favorable cost. For this purpose, it is recorded that when the forced conduction is formed parallel to the driving device and / or as linear driving. Therefore, the movement forces are always parallel to the direction of movement of the actuating element, such that it is always driven in a correct position. The constructions are favorable when the forced conduit shows at least one guide element, which is guided in a sliding manner, wherein the guide element is a round bolt or bolt, a rectangular bolt or the like, which is guided in a bearing, which it can be shaped as a ball bushing, as a self-lubricated bushing or the like. Another convenient embodiment is that the forced guide is formed as a flat guide. This ensures due to the characteristics of the optical guide a minimum construction height, such that the driving device is allowed to be placed also without problems in a narrow place proportion in a mold or matrix for injection molding. The guide element is a flat element preferably, it is a block piece, a slide or the like, while the bearing or support is formed of two guide rails, which includes a sliding guide element. An alternative embodiment establishes that the support or bearing is a ball, needle or roller bearing, which ensures an equally low friction and precise guidance of the flat element. A further embodiment of the invention establishes that the guide element and / or the bearing are formed by self-sliding. In this way the drive device is almost maintenance-free, this guarantees a long-lasting drive or drive conveniently. A further development of the invention establishes that the guide element with the actuating element are in connection with or fixed to it. The latter advantageously shows two guide rails guided in a sliding manner, wherein at least two sliding elements are disposed between the lifting element and the guide rails in the grooves running diagonally with respect to the first direction and the second direction, which transform a movement of the guide rails along the first direction in a movement of the lifting element in the second direction. For this reason it is advantageous if the drive element or the guide rails are joined or can be connected to a pusher element with a driver, so that only one drive unit is necessary. It is convenient that the guide element is fixed at least to a guide rail. This can be complemented or alternatively fixed to a thrust element, which unites the guide rails with the impeller. In this case, the entire drive element is guided precisely from the planar guide, wherein the guide element can be in one piece. A particularly precise and regular movement is achieved when the guide element is arranged or conformed to the thrust element. The force of movement then always starts centrally in the thrust element, which is especially advantageous when the guide rails are shaped symmetrically with respect to the thrust element. The latter move regularly in an exact manner and are held in the correct position. It is not possible to advance one or the other of the rails. Such guidance leads to the entire device always working accurately and the lifting plate can move up and down out of each position symmetrically or regularly. An inclination or adherence of the construction elements that are guided in a sliding manner will be avoided. In a further embodiment at least two forced guides and / or two guide elements parallel to each other can be provided. These are also preferably disposed symmetrically in the drive device, such that the accuracy and stability of the guides are raised together. According to a further advantageous embodiment, at least two additional guide rails can be attached to the guide rails, between which at least one additional lifting element is arranged. To which at least two additional locking needles can be fixed, wherein the additional lifting element and the additional guide rails are coupled, such that a movement of the additional guide rails along the first direction becomes a movement of the lifting element in the second direction that runs transverse to the first direction. By means of the immobilization of the valve needles to the complete lifting elements and the coupling of the guide rails, it is ensured that all the valve needles always move synchronously and are driven with the same closing force. The guide rails are joined to each other in a removable manner, such that the extensions can be made each time and can be rebuilt. It is then advantageous when the junction between the guide rails are formed as connections or connections by plug or hook connections. It is important that between the guide rails along the first direction there is a firm connection or connection, with that the lifting elements can always be operated safely. In order for the actuating device and the valve needles to be individually adjustable to the workpiece, the valve needles are formed in an adjustable manner along the second direction relative to the lifting element. So that a synchronous positioning movement can also be guaranteed by simultaneous movement compensation, the valve needles can be fixed according to a further aspect of the invention with axial fixation and radial float to the lifting elements. A special embodiment of the invention establishes that the drive device is formed in a matrix or mold for injection molding, especially in or to a fixing plate. The latter is provided here for example with a concavity for the admission of the drive device, which simplifies the assembly. The guide of the forced guide is formed - likewise the guiding installation - preferably in or on the fixing plate, wherein the guide device is formed before the fixing plates themselves or before at least two driving guides, which they are fixed in or on the fixing plates, wherein the guide rails are slidably guided between the guide rails. The construction is also favorable when the bearing of the forced guide is formed in the floor of the fixing plate. The forced guide then requires a minimum space, which is always a favorable influence on the construction height of the drive device. The guide or driving device of the drive device has at least two guide or guide rails, which is fixed to or on the fixing plates, wherein the guide rails are slidably guided between the guide rails. In order to reduce the sliding friction of the drive element within the driving device, the invention provides that the driving element and / or the driving device and / or the fixing plates show or carry sliding elements. It is preferably sliding or sliding plates, which therefore occupy little space, which has a favorable impact on the construction height. Such type of elements can be produced in a simple and favorable way in costs, as well as assembled quickly and comfortably and interchanged if necessary. Especially favorable friction proportions are obtained when the sliding elements are manufactured at least partially from a self-lubricating material or at least partially are coated therewith.

Completely or alternatively, the sliding elements can be formed as bearings or supports for spheres, needles or rollers or are parts of such bearings. Further important advantages are provided, when the drive device is strictly closed with the holding plates. The construction height of the mold or injection molding die is not modified in this way. BRIEF DESCRIPTION OF THE DRAWINGS Further features, details and advantages of the invention are provided from the text of the claims as well as from the following description of the embodiments according to the drawings. Which show: Fig. 1 a plan view of an embodiment of a driving device for the injection molding die or matrix, Fig. 2 a plan view of another embodiment of a driving device for the mold or injection molding die, Fig. 3 a cross-sectional view of a further embodiment of a driving device for the injection molding die or mold. Fig. 4 the drive device of Fig. 3 without the lifting plate, and Fig. 5 a single representation of a pushing element. DETAILED DESCRIPTION OF THE INVENTION The operation or actuator device designated generally by 10 in Fig. 1, is provided for the operation of multiple closing needles 16 in an injection molding device (not shown later). The latter is used to manufacture molded parts from a fluid mass, for example, from a plastic melt. For this, multiple needle closure nozzles (not shown) are arranged under a distribution plate (also not shown). These lead the plastic melt which is worked to a separable mold insert (also not shown), whose cast-openings of the closing needles 16 are opened and closed periodically. On the distribution plates sits a holding plate 12 which is provided for fixing the drive device 10 with a concavity or rectangular recess 13. In order that the closing needles 16 of the needle closure nozzles can be actuated simultaneously, a lifting element 20 is provided, to which at least two closing needles 16 are fixed. The lifting element 20 is preferably formed as a rectangular plate, which lies parallel to the fixing plates 12 and the longitudinal side is coupled with a drive element 30 that can be moved longitudinally in a first direction Rl, wherein a movement of the element 30 of driving along the first direction R1 is transformed into a movement of the lifting element 20 in a second direction R2 which runs transverse to the first direction R1. For this, the lifting plate 20 carries two sliding elements 21 on each side, which are guided in a sliding manner parallel to the drive element 30. The latter is provided for this in its lateral surfaces that are directed towards the lifting plates 20 with two slots 40 running diagonally to the fixing plates 12, which support the sliding elements 21 up to a minimum play of movement. The drive element 30 is formed of two guide rails 31 arranged in a displaceable manner, which are arranged on both sides of the lifting plate 20. The latter are seated on the front side between the fixed stops 60, 62, which are fixed by means of screws 63 in the concavity 13 of the fixing plates 12. The adjustment pins 66 offer a precise alignment of the rectangular stops 60, 62 preferably in the cross section, where the pins 66 are fixed in a firm manner in the fixing plates 12 and are admitted sufficiently tight in the perforations (not referenced) in the stops 60, 62. The guide rails 31 are slidably guided within the concavity 13 in a guide or guide installation 90 and on a complete push element 82 and an adapter piece 86 (shown in FIG. 1) are joined with an impeller 80. This is fixed externally to the fixing plates 12, wherein the adapter piece is traversed by an opening (not shown) or recess on the front side through the fixing plates 12. The impeller 80 can be a regulating drive or electric, pneumatic or hydraulic motor, which is preferably driven by a control or control electronics (also not shown). The connection between the thrust element 82 and the adapter part 86 forms a T-shaped cross-section 88 in cross-section, which - likewise without a mold or matrix - is plugged in or inserted conclusively into the thrust element 82. This is provided for this with a recess 89. To secure the collision 88 to the adapter part a fastening pin 87 is provided. Each guide rail 31 has a hook-shaped end 33 on the drive side, which can be attached laterally to the pushing element 82. The latter has for this two ends in the form of steps, which are received from the vertical with respect to the first direction l towards the hooks 33 directed inwardly of the guide rails 31 in a conclusive manner. In this way, a fixed connection is always created in the first direction Rl, which is removable to it vertically. The construction parts 31, 82 of the drive element 30 can be quickly assembled and ginned each time, for example when the longitudinal lifting plate 20 or the width is applied. In the assembly the elements 31, 82 are simply inserted without tools one inside the other, where the mimes form a U-shaped arrangement in the assembled state and are fixed to each other in a fixed manner. The manipulation of the total drive device 10 is extremely simple; Assembly costs are minimal. The guide or guide system 90 is formed either from the fixing plates 12 or from at least two separate guide rails 91. The latter are placed laterally in the concavity 13 of the adapter plate 12. They are fixed by means of screws to the floor 14 of the concavity 13 and on their side surfaces facing the guide rails 31 each is provided with a guide groove (not observed) that runs parallel to the adapter plate 12, crossing . Each guide groove receives with a minimum movement play a sliding strip (also not shown), which is formed in one of the side surfaces that are directed towards the guide rails 91. The non-referenced adjustment pin 96 takes care of a precise alignment of the conduction rails 91 within the concavity 13. These are fixedly inserted into the floor 14 of the fixing plate 12 and are admitted with sufficient adjustment in the conduction rails 91 ( perforations not referenced in detail). The alternative embodiment shown in Figs. 3 and 4 states that the guide rails 91 carry two sliding plates 92 on the lateral surfaces 92 which are directed towards the guide rails 31, which are preferably coated with self-lubricating material or produced from such material. It is recognized that in the direction Rl the actuating element 30 sliding with the guide rails 31 and the pushing element 82 form a pushing frame, comprising the lifting plate 20 with minimum movement play laterally and being driven from sliding manner within the drive device 10. To reduce the sliding friction within the drive device, the guide rails 31 are provided above and below with sliding plates 35, which can be manufactured either from a self-lubricating material or at least partially coated therewith. The sliding plates 35 of the guide rails 31 together with the sliding plates 93 form the sliding elements of the guide rails, such that the drive element 30 can be moved back and forth with minimum force expenditure. Complementarily or alternatively the sliding elements 35, 93 are formed as moldings or sliding strips or as ball, needle or roller bearings. But they can also be constituent parts of ball bearings, needle or rollers. As shown in Fig. 1, it is allowed to attach additional guide rails 131 to the guide rails 31. Between these lies an additional lifting element 12 parallel to the fixing plates 12, which as a rectangular plate with the same width is closed to the first lifting plate 20 and fixed to the additional closing needles 116. Both plates 20, 120 settle in the longitudinal direction completely between the fixed stops 60, 62. For coupling the additional guide rails 131 to the guide rails 31, the ends 34 which are directed towards the pushing element 82 of the guide rails 31 and the ends 133 which are directed towards the driver 80 of the additional guide rails 131, they are also formed as hooks, wherein the hooked ends 34 of the guide rails 31 and the hooked ends 133 of the additional guide rails 131 are formed equal and each perpendicular to the first direction Rl in the opposite direction shown. Then the hooks 34, 133 hold one in the other in a conclusive manner such that in the first direction an always firm connection or connection is formed, which is removable vertically. In this way it is possible for the guide rails 31, 131 to be joined on the ends 34, 133 by merely hooking or plugging in one another quickly and simply. The drive device 10 can be widened or extended at great expense each time by an additional lifting plate 120 while engaging or engaging additional guide rails 131 to the previously existing guide rails 31. The latter are joined on the guide rails 31 and the push element 82 with the impeller 80, such that additional drive units are not necessary. This also externally impacts favorably on the costs of the mold or matrix. The additional lifting plate 121 carries - like the lifting plate 21 - laterally two separate sliding elements (not shown), which move parallel to the guide rails 131. The latter are then provided on their side surfaces which are directed to the lifting plates 120 with two slots 140 running diagonally to the fixing plates 12, which receive the sliding elements up to a minimum movement clearance. The additional guide rails 131 move longitudinally between the fixed guide rails 91 of the conduction installation 90. The impeller 80 moves the frame 30 in the first direction Rl forwards and backwards periodically, the lifting plates 20, 120 driven forcibly between the stops 60, 62 move upwards downwards, from the sliding elements driven in the slots 40. , 140 diagonals of the rails 31, 131 guide pass to the second direction R2, which preferably is perpendicular to the direction Rl. The lifting plates 20, 120 that lie flat with one another, with their front surfaces (not referenced) then carry out together with the closing needles 16, 116 fixed there a synchronous lifting movement, wherein all the needles 16, 116 are always actuated simultaneously and with the same adjustment force. With this, the U-shaped actuating element 30 does not tilt during the impulse between the lifting plates 20, 120 and the guide or guide system 90, parallel to the guide rails 91, a forced guide 50 is provided, which further conducts the drive element 30 along the direction Rl. The forced guide 50 is preferably formed as a linear guide. It has symmetrically on both sides of the impeller 80 an elongated guide element or guide 52, which is driven in a forced manner in a bearing 54. The guide element 52 is for example rounded pegs, which are fixed by means of screw 53 to push element 82. To securely place in an exact perpendicular direction the shank 52 on the front surfaces 84 facing the impeller of the thrust element 82, saws or bag perforations (not referenced) are arranged in these, which receive with sufficient adjustment the pins 52. The latter lie always parallel to the direction Rl and pass rapidly through the front side 15 which is directed to the impeller 80 of the fixing plates 12. Each bearing 54 for example a bush with ball transmission, the front side is placed on the plates 12 is fixed and is received in the spikes 52 guides arranged with a set of movement as little as possible. The guide pins 52 are always guided exactly inside the ball-bearing sockets which always run parallel to the direction Rl, such that the guide frames 30 must be forcedly moved exactly in the direction Rl. A tilting of the guides 30 in front of the lifting plates 20, 120 and / or in front of the driving rails 91 is then closed considerably. The drive installation 10 always ensures a regular and precise driving of the frame 30 in the driving installation 90. In the embodiment of FIGS. 3 to 5, the forced guide 50 formed as a linear guide concentric to the impeller 80 is a guide element 52, which slides in a bearing 54. The latter is formed of two guide rails 56, which they are allowed in the bottom 14 of the fixing plate 12 and are fixedly screwed there. As shown in particular in FIG. 5, the guide element 52 is formed as an elongated planar element and in one piece with the push element 82. It sits exactly in the middle of the thrust element 82 and centrally between the guide rails 31. The side grooves 57 on both sides of the flat element 52 admit a means of lubrication, such that the sliding friction within the bearings 54 is reduced to a minimum. The total arrangement is extended maintenance-free. The guide element 52 is guided exactly between the guide rails 56 of the bearings 54, that is to say the pushing element 82 can be twisted or tilted inside the device. By this it is ensured that the guide rails 31 which lie symmetrically to the forced guides 50 always move parallel and synchronous to the direction Rl. The rails 30 of full rails must therefore be moved in a forced manner exactly in the direction Rl. A tilting of the rails 30 in front of the lifting plates 20 and / or in front of the driving rails 91 is discarded thereby. The drive device 10 always ensures a regular and precise conduction of the frame 20 in the guiding or driving installation 90. With this the lifting plates 20 can carry out a defined and always reproducible lifting movement, the movement of the pushing element 82 is delimited in the first direction Rl by the stops. A first stop forms the fixing plate 12, while the stop 60 which is directed to the impeller 80 forms a second stop. The distance between the front wall 15 and the stop 60 gives the adjustment space for the pushing element 82 and with that for the guide rails 31, 131, which can therefore be moved between at least two positions defined forward and backward. behind. The lifting plates 20, 120 lead - depending on the diagonal position of the slots 40, 140 and the sliding elements - a corresponding defined lifting movement, where on the driver 80 can also be started in intermediate positions, when for example, the closing needles 16, 116 are placed in different closing and opening positions.

The plug-in or removable insert connection between the constituent parts 31, 82 and 82, 88 as well as 31, 131 have the advantage that the drive device 10 can be mounted quickly and comfortably from above in the recess 13 of the stop plate 12 . Likewise, the stoppers 60, 62 placed in the concavity 13. The complete drive device 10 therefore consists of only a few parts with simple geometry. The same is also easy to assemble and each time to extend. On the contrary, the lifting elements 20, 120, the guide rails 31, 131, the stop element 82 and the guide rails 91 can each time be quickly and conveniently removed from the fixing plate 12, for example to exchange the parts of defective construction, in order to exchange the closing needles 16, 116 or to carry out maintenance work. The closing needles 16, 116 are placed from above on the lifting plates 20, 120, which are provided for this with perforations (not referenced). In the region of the lifting plates 20, 120 on each end side of the needles 16, 116 shows a thread, which is screwed into a retaining plate in essentially square (which can not be seen). An adjusting nut (also not referenced) fixes the needle 16, 116 against the retaining plate, which lie flat on the lifting plate 20, 120. In this way the needles 16, 116 are adjustable along the second direction R2 in relation to the individual lifting plates 20, 120 in the length. Each retaining plate lies in a recess (also not referenced), whose height corresponds exactly to the height of the retaining plate and whose external dimensions are larger than those of the retaining plate, such that it can be moved radially inside the retaining plate. the notch A medium screw 26 in the cover plate 25 fixed to the lifting plate 20 secures the retaining plate to the recess. The retaining plate is thus fixed in the axial direction of the closing needles 16, 116 with as little movement as possible between the lifting plates 20, 120 and the cover plate 25, such that all the needles 16 , 116 are always placed precisely in the closed position and can be opened again. In the radial direction, instead, the holding plates are arranged floating, such that the deviations of the needles 16, 116 inside the hot runner nozzles are balanced. Through. In the form of the holding plate, the needles 16, 116 are also arranged fixed to the rotation in front of the lifting plate 20. The needles 16, 116 are raised with their adjustment nuts 18 through the cover plates 25. With that however the ends of the needles do not extend further on the lifting plates 20, 120, the holding plates and the cover plates 25 lie in the concavities 24, which are carried from above to the plates 20, 120 of elevation. The height of the construction of the drive device 10 thus remains small. Concentric between the concavities 24, the lifting plates 20, 120 form a centric recess 70 (see Fig. 1), which is continued with the same internal diameter in the fixing plate 12. The recess 70 serves for the realization of a current channel of a distribution arm or the like, especially of a machine nozzle (not shown) or of a bushing of the casting, which provides the distributor plate that lies below the fixing plate 12 with the plastic masses for processing. The internal diameter (not referenced) of the recess 70 is measured such that the lifting plates 20, 120 can be moved without being altered. The individual lifting plate 20 has centrally a recess 70 (see FIG. 3) which is continued with the same internal diameter to the fixing plate 12. This recess 70 also serves for the realization of a current channel, a distribution arm or the like, especially a machine nozzle (not shown) or a bushing of the casting.

The closure of the drive device 10 forms a cover plate (not shown) which is placed flat on the guide rails 90 and secured thereto by means of screws (also not shown). The cover plate 19 ensures complete notched connections and closes preferably tightly with the upper side of the fixing plate 12, such that the driving device 10 is not placed further on the fixing plate 12. The device 10 is completely integrated to the fixing plate 12, which has a favorable effect on the height of the construction of the mold or matrix. Likewise, the impeller 80 is externally seated to the fixing plate 12, which then has no repercussion on the height of the construction. In the embodiments of Figs. 1 and 2, thirty-two complete closing needles 16 are attached to the lifting elements 20, 120. The number of closing needles 16 can be formed then without further elevation or decrease, while the lifting plate 20 is correspondingly shaped. For optimum use of the given mold or die surfaces, therefore, multiple pieces inserted into the mold can be placed and with that multiple needle closing nozzles next to each other very closely. It is also conceivable to arrange two devices 10 for operation or operation side by side. The fixing plates 12 are equipped for this with two concavities 13 adjacent to one another or with a joint concavity, such that the guide rails 31, 131 and the guide rails 90 of the individual drive devices 10 lie parallel to one another. . The invention is not limited to one of the previously described embodiments, but is applicable in multiple ways. Alternatively or in addition, the guide element 52 of the forced guide 50 can be fixed directly to guide rails 31. If necessary, it is also a rectangular bolt. The bearing 54 can be formed as a self-lubricating socket, which is received in the bolts 52 with sufficient adjustment and with as little movement as possible. The guide rails 31 and the push element 82 as well as the guide rails 31, 131 can be connected or connected to each other also with forced closing, for example by means of fastening elements. In addition, the lifting elements 20, 120 can be detachably joined to one another. The fastening plates of the closing needles 16, 116 can be formed as washers or discs, which are flat on the two opposite sides. The ends (not designated there) which are directed towards the driver 80 of the additional guide rails 131 can also be shaped into a hook, so that they can be coupled to additional guide rails. These hooked ends also conform to the hook ends 33, 34, 133 and are created such that in the first direction Rl an always fixed connection is generated, which can be disassembled perpendicular thereto. Therefore, the drive or complete operation device 10 can be created as a mechanical system or construction box, which can be assembled with a few individual and flexible base elements 20, 30, 50, 120, 90. The complete construction elements can be joined to each other by hooking or quick insertion and if necessary, they are disassembled again. The guide rails 31 are preferably equipped on both sides with ends in the form of hooks, which further simplifies production. The drive device 10 can thus be widened or extended without great expense or adjusted to a different need. All the features and advantages that arise from the claims, the description and the drawings, the individual constructive units inclusive, the spacious arrangements and the process steps, can be essential for the invention both as they are and also in different combinations. LIST OF REFERENCE NUMBERS Rl first direction 47 screws R2 second direction 50 forced guide 10 drive or pressure device 12 fixation plate 52 guide element 13 concavity / recess 54 bearing 14 floor 56 guide rails or front walls driving 16 locking needle 57 screw 17 opening 60 stop lifting element / lifting plate 21 sliding element 62 stop 22 lateral surfaces 63 screw 23 recesses 66 adjustment pin 24 concavity 70 recess 25 cover plate 80 drive 26 screw 82 push element drive element 83 shaped end 31 stepped guide rails 33 hook-shaped end 84 surfaces fron34 hook-shaped end such 40 slot 86 adapter part 46 screws 87 elastic pin 88 collision 89 notch 90 guiding or driving installation 91 guide rails 92 screw 96 adjustment pin 116 closing water 120 lifting element / lifting plate 131 guide rails 133 hook-shaped end 140 slot

Claims (27)

1. CLAIMS 1. Device (10) for operation or drive for closing needles in molds or injection molding dies with needle closing nozzles, with at least one lifting element (20), to which at least one needle is fixed ( 16) and with at least one actuating member (30) placed in longitudinal sliding in a first direction (Rl), which engages with the lifting element (20) in such a way that a movement of the element (30). ) of driving along the first direction (Rl) is transformed into a lifting movement of the lifting element (20) in the second direction (R2) that runs transverse to the first direction (Rl), characterized in that it is provided an actuating element that slides in a guide or driving device (90) along the first direction (Rl) with a forced guide (50) or with additional pressure 2. The driving device according to claim 1, characterized wherein the forced or pressure guide (50) is formed parallel to the guide or guide device (90). The drive device according to claim 1 or 2, characterized in that the forced or pressure guide (50) is driven in a linear manner. The drive device according to one of claims 1 to 3, characterized in that the guide (50) forced or under pressure has at least one guide element (52) or guide, which is guided in a sliding manner in a bearing ( 54). The drive device according to one of claims 4, characterized in that the guide element (52) is a rounded bolt, a rectangular bolt or the like. The drive device according to claim 4 or 5, characterized in that the bearing (54) is a ball-bearing bushing, a self-lubricating bushing or the like. The drive device according to one of claims 1 to 4, characterized in that the guide (50) forced or pressed is a flat guide. The drive device according to claim 7, characterized in that the guide element or guide element (50) is a flat element, a block piece, a slide or the like. The drive device according to claim 7 or 8, characterized in that the bearing is formed of two driving rails (56). The drive device according to claim 7 or 8, characterized in that the bearing (54) is a ball, needle or roller bearing. The drive device according to one of claims 4 to 10, characterized in that the guide element (52) or guide and / or the bearing (54) is self-lubricating. The drive device according to one of claims 4 to 11, characterized in that the guide element or guide element (52) is in connection with the drive element (30) or is fixed to it. The drive device according to claim 12, characterized in that the drive element (30) has two guide rails (31) which are guided in a sliding manner, between the lifting element (20) and the rails (31). ) at least two sliding elements are arranged in the slots (40) that run diagonally to the first direction and to the second direction (R2), which transform a movement of the guide rails (31) along the first direction (Rl) in a movement of the lifting element (20) in the second direction (R2). The drive device according to claim 12, characterized in that the drive element (30) is connected via a thrust element (82) with an impeller (80). The drive device according to claim 14, characterized in that at least one guide element (52) is attached to the push element (82). The drive device according to one of the claims 14 or 15, characterized in that the element (52) Guide or line is plugged in or inserted with the push element (82). 17. The operation or drive device according to one of claims 4 to 16, characterized in that at least two forced or pressurized guides (50) and / or two parallel guide elements (52) are provided side by side. 18. The mold or matrix for injection molding with at least one drive device (10) according to one of claims 1 to 17. The mold or matrix for injection molding according to claim 18, characterized in that the device ( 10) is formed in or on a fixing plate (12). 20. The mold or matrix for injection molding according to claim 18 or 19, characterized in that the bearing (54) of the guide (50) forced or pressurized is formed on or in the holding plate (12). 21. The mold or matrix for injection molding according to one of claims 18 to 20, characterized in that the guide or conduction device (90) is formed in or on the fixing plate (12). 22. The mold or matrix for injection molding according to claim 21, characterized in that the guide device (90) of the drive device (10) is formed from the fixing plate. 23. The mold or matrix for injection molding according to claim 21 or 22, characterized in that the guide device (90) of the drive device (10) has at least two guide rails (91) or guide, which are fixed in or on the fixing plate (12), wherein the guide rails (31, 131) move between the conduction rails (91). The mold or matrix for injection molding according to one of claims 21 to 23, characterized in that the actuating element (30) and / or the guide device (90) and / or the fixing plate (12) have or they carry sliding elements (35, 93). The mold or matrix for injection molding according to claim 24, characterized in that the sliding elements (35, 93) are sliding strips or moldings or sliding plates. 26. The mold or matrix for injection molding according to claim 24 or 25, characterized in that the sliding elements (35, 93) are manufactured at least partially from a self-lubricating material or at least partially coated therewith. 27. The mold or matrix for injection molding according to claim 26, characterized in that the sliding elements (35, 93) are or form ball, needle or roller bearings.