CN111267164B - Fully automatic foam thin cutting device - Google Patents

Abstract

The invention discloses a full-automatic foam thin cutting device which comprises a frame, a foam feeding mechanism and a cutting mechanism, wherein the foam feeding mechanism and the cutting mechanism are arranged on the frame; the foam feeding mechanism comprises a feeding base and a driving device for driving the feeding base to move; the cutting mechanism comprises a cutter support, an annular cutter device arranged on the cutter support, a cutter operation precision control device and a inching feeding control device; the annular band knife device utilizes the band knife to cut the foam piece, and the band knife operation precision control device controls the stability and the precision of the band knife during cutting, and the point-movement feeding control device controls the cutting position of the band knife cutting edge. According to the invention, the continuously running annular cutter foam piece is adopted for cutting, the running precision of the cutter is controlled, and meanwhile, the cutter is controlled and matched with the feeding base by the point-driven feeding control device, so that the cutter seam is staggered to leave a cutting mark on a cutting surface, uniform slicing is realized, the cutting surface is smooth and flat, the cutting process has less chips, and the machine is environment-friendly and healthy.

Description

Fully automatic foam thin cutting device

Technical Field

The invention relates to a material cutting device, in particular to a full-automatic foam thin-cutting device.

Background technique

Rigid foam usually needs to be cut into foam sheets with a specific layer thickness. For example, polymethacrylimide foam (hereinafter referred to as PMI foam) is a new type of polymer structural foam material with the best comprehensive performance due to its large molecular weight and good hardness. It has the characteristics of light weight, high strength, and high/low temperature resistance. However, when it is used in fields such as aviation core materials, it often needs to be cut.

Usually, thick foam blocks are cut into sheets by reciprocating sawing or slice cutting with a saw blade, but the foam blocks are very hard, and sawing will produce a lot of foam slag and cause an uneven cutting surface. In addition, due to the limited thickness of the saw blade, the friction between it and the foam strips during the sawing process is large, which makes it impossible to achieve thin cutting, and the wear and tear of the tool is also relatively large, and the tool needs to be replaced frequently; and slice cutting requires the foam block to be cut thinly and then clamped and positioned with a roller, but this will cause damage or waste of raw materials. In addition, the existing cutting equipment cannot achieve precise adjustment and control of the cutting size of the foam material, and the cutting efficiency is low, which makes it difficult to meet the demand for thin-cut foam sheets.

Summary of the invention

In order to overcome the defects of the prior art, the present invention provides a fully automatic foam thin-cutting device, which realizes thin-cutting of foam parts through an annular belt knife device, and can adjust the relative angle and relative distance between the belt knife and the cutting surface of the foam part at any time, while also being able to control the stability and precision of the belt knife.

The whole equipment has a simple structure and convenient operation and control, which greatly improves the foam cutting efficiency.

Specifically, the fully automatic foam thin-cutting device provided by the present invention comprises a frame, a foam feeding mechanism arranged on the frame, and a cutting machine;

The foam feeding mechanism comprises a feeding base and a driving device for driving the feeding base to move;

The cutting mechanism comprises a band knife support, and an annular band knife device, a band knife operation precision control device and an inching feeding control device installed on the band knife support;

The annular belt knife device is used to cut the foam pieces positioned on the feeding base, the belt knife operation accuracy control device is used to control the stability and accuracy of the belt knife during cutting, and the inching feed control device is used to control the cutting position of the belt knife cutting edge.

The fully automatic foam thin-cutting device of the present invention adopts a continuously operating annular belt knife device to cut the moving foam parts, and during the operation, the belt knife is controlled in accuracy and stability by a belt knife operation accuracy control device. At the same time, the coordination between the belt knife and the feeding base is controlled in combination with an inching feed control device, so as to realize precise cutting with the belt knife.

Furthermore, the annular belt knife device also includes a driving pulley and a driven pulley, and the belt knife is wound around the driving pulley and the driven pulley.

Furthermore, the annular band knife device also includes a dust suction plate to timely remove cutting debris on the band knife surface to ensure the cutting quality of the band knife.

As the driving pulley rotates, the belt knife is driven by the driving pulley, and at the same time, the belt knife pulls the driven pulley to rotate, thereby forming a ring-shaped belt knife motion mechanism. Under the action of tension, there is a certain friction between the driving and driven pulleys and the belt knife; at the same time, the part of the belt knife located between the driving pulley and the driven pulley is approximately in the horizontal plane.

Specifically, the driving pulley is driven by a variable frequency motor to facilitate adjusting the speed of the driving pulley according to the working state.

Specifically, the band knife used in the fully automatic foam thin-cutting device of the present invention has a length of 3-20 meters, such as 8 meters or 10 meters. In practical applications, the length of the band knife is limited according to the length of the material to be cut. A long band knife can ensure the cutting speed and reduce the cutting resistance, while avoiding the shaking of the band knife joint. Specifically, the band knife is a steel band knife.

Furthermore, the annular belt knife device also includes dust suction plates arranged on the upper and lower sides of the belt knife running plane to timely remove cutting debris on the belt knife surface to ensure the cutting quality of the belt knife.

Furthermore, the belt knife running accuracy control device includes a positioning mechanism for controlling the offset of the belt knife in the running direction and/or a knife clamping mechanism for controlling the shaking of the belt knife in the running direction.

By setting the positioning mechanism and/or the knife clamping mechanism, the deviation or shaking of the belt knife in any direction of the running plane can be controlled and prevented, so that the running stability and accuracy of the belt knife can be controlled and the cutting accuracy of the belt knife can be guaranteed.

Furthermore, the positioning mechanism includes positioning members arranged in pairs, and the pair of positioning members are respectively arranged on the cutting edge side of the band knife and the back side opposite to the cutting edge side.

Specifically, the positioning member is a positioning wheel or a positioning plate. If it is a positioning wheel structure, the wheel axle of the positioning wheel is arranged perpendicular to the running plane of the belt knife.

Furthermore, the knife clamping mechanism includes a knife clamping seat, a knife blocking positioning plate arranged on the knife clamping seat, the knife blocking positioning plate is provided with a knife blocking member that contacts the cutting edge of the belt knife, and/or a top knife member arranged on the knife clamping seat, the top knife member and the knife blocking member are arranged on both sides of the running direction of the belt knife, and/or a knife clamping plate arranged on the knife clamping seat, the knife clamping plate has a gap for clamping the belt knife to prevent the belt knife from shaking in the running direction.

As one of the specific embodiments of the knife clamping plate, it may include a first knife clamping plate and a second knife clamping plate arranged in pairs on the knife clamping seat, and a gap for clamping the belt knife is formed between the two knife clamping plates to prevent the belt knife from shaking during operation.

Of course, in the specific implementation process, the setting position and number of the knife clamping plates can be adaptively changed in the knife running path. The knife clamping plates are not limited to more than two, but can also be a whole plate with a gap on it.

The knife stopper can control and prevent the displacement and deflection of the belt knife during the operation of the belt knife, thereby ensuring that the belt knife is in a state of being approximately flat. Specifically, the knife stopper can be a knife stopper wheel or a knife stopper plate, and the top knife member can be a top knife wheel or a top knife plate.

The top knife piece and the knife blocking piece are respectively arranged on two sides of the band knife, namely the cutting edge side and the back side opposite to the cutting edge side, for preventing the band knife from deflecting or shaking.

Furthermore, the belt knife operation precision control device also includes a belt knife adjustment mechanism, and the belt knife adjustment mechanism includes an angle adjustment rod, one end of the angle adjustment rod is hinged to the frame, and the other end is hinged to the belt knife bracket.

The angle adjustment rod is used to adjust the inclination angle of the knife bracket relative to the frame, thereby changing the overall inclination angle of the knife, ensuring that the cutting edge can just contact the foam part with changing thickness, so as to achieve uninterrupted uniform speed and uniform thickness cutting.

Furthermore, the belt knife operation precision control device also includes a belt knife tightening mechanism, which is used to loosen and tighten the belt knife.

Furthermore, the belt knife operation precision control device also includes a pulley elevation angle tension adjustment mechanism for realizing variable angle control of the pulley, thereby adjusting the elevation angle tension of the two pulleys.

Furthermore, the band knife operation precision control device further comprises a fine grinding mechanism and/or a coarse grinding mechanism for controlling the grinding angle;

The fine grinding mechanism comprises an upper fine grinding wheel and a lower fine grinding wheel arranged in pairs;

The rough grinding mechanism comprises an upper rough grinding wheel and a lower rough grinding wheel which are arranged in pairs.

The fine grinding mechanism and the rough grinding mechanism are controlled independently. Specifically, each grinding wheel uses a diamond grinding wheel and uses asymmetric cutting angles. The high-speed moving steel band knife contacts the high-speed moving diamond grinding wheel, and the cutting edge of the steel band knife will be ground into a smooth curved surface, thereby forming a sharp edge with a small angle with the back of the steel band knife, meeting the requirements of cutting foam sheets of uniform thickness.

Specifically, the grinding wheel mesh, rotation speed and hardness of the fine grinding wheel and the rough grinding wheel are different.

Specifically, each grinding wheel is driven by an independent grinding motor, and specifically, the grinding motor is mounted on a motor mounting plate.

Furthermore, the fine grinding mechanism and the coarse grinding mechanism both include a position adjustment mechanism for controlling the movement of the grinding wheel position.

Specifically, the fine grinding knife mechanism and the rough grinding knife mechanism each include a first position adjustment mechanism for adjusting the relative vertical distance between the paired fine grinding wheels and the paired rough grinding wheels, so as to adjust the gap between the grinding wheel and the band knife, and each include a second position adjustment mechanism for adjusting the relative distance between the rough grinding wheel and the fine grinding wheel, so as to adjust the band knife grinding section.

Specifically, the first position adjustment mechanism and the second position adjustment mechanism may have the same structure. For example, they may include a slide seat connected to the motor mounting plate, a lead screw connected to the slide seat, and a servo motor. The servo motor is connected to the lead screw via a coupling, and under the control of a servo controller, the servo motor drives the lead screw to rotate, thereby driving the slide seat to move, thereby controlling the position movement of the corresponding grinding wheel.

In practical applications, in order to accurately control the moving position of each grinding wheel, position sensing can be performed through a position sensor, and when the fine grinding mechanism and/or the coarse grinding mechanism are grinding the band knife, the positioning mechanism and/or the knife clamping mechanism simultaneously controls the band knife to ensure that the band knife is also in a stable state during grinding.

Furthermore, the inching feed control device includes a sensor device, which is used to sense the position of the knife seam in operation to control the cutting position of the knife cutting edge, thereby avoiding the knife seam from being within the cutting surface during a complete cutting process of the foam piece, thereby avoiding the seam from producing unnecessary cut marks on the foam slice.

Furthermore, the inching feed control device also includes a control circuit board, which is used to control the running speed of the active pulley of the annular belt knife device and/or the feeding speed of the foam piece, so as to achieve the coordination of the running speed and position of the belt knife and the foam piece, so as to avoid the belt knife seam leaving cuts on the cutting surface of the foam piece.

Specifically, the sensing device may be, but is not limited to, an infrared sensor.

Furthermore, the feeding base is provided with a vacuum adsorption end for adsorbing and positioning the foam piece.

The setting of the vacuum adsorption end can ensure the stable positioning of the foam part on the feeding base, keep it relatively stable during the cutting process, avoid unnecessary relative friction with the cutting edge, and avoid deviation or slipping of the cutting surface.

Further, the driving device includes a first driving mechanism and a second driving mechanism;

The first driving mechanism is used to control the displacement of the feeding base in a direction perpendicular to the feeding direction;

The second driving mechanism is used to control the displacement of the feeding base along the foam piece feeding direction.

The first driving mechanism includes a first guide post connected to the feeding base, a sliding sleeve threadedly connected to the first guide post, and a reduction motor driving the sliding sleeve to rotate.

Furthermore, the first driving mechanism also includes a displacement positioning grating arranged on the frame to position the moving position of the sliding sleeve.

Through the coordination of precision screw rod, servo motor and positioning grating, each displacement of the feeding base is controlled, so that the error of each movement reaches μ level, and then cooperated with the knife operation precision control device, the cutting accuracy and surface finish of the foam parts can be stably controlled.

Furthermore, the second driving mechanism includes a ball screw, a driving motor that drives the ball screw to rotate, and a slider that moves linearly along the ball screw, and the slider drives the feeding base to move linearly.

The first driving mechanism is used to adjust the displacement position of the feeding base perpendicular to the feeding direction of the foam piece so that the upper surface of the foam piece is just in contact with the cutting edge of the band knife, and the second driving mechanism is used to drive the feeding base to approach the band knife at a uniform speed.

Furthermore, the foam feeding mechanism also includes a preheating device, which is arranged on the frame and is used to preheat and soften the foam parts to be cut.

In addition, the foam feeding mechanism also includes a humidifying device, which is used to increase the humidity of the foam piece to be cut so that it is properly softened and facilitates subsequent cutting, while also facilitating the reduction of the cutting resistance between the band knife and the foam piece.

The preheating device can be an electric heating wire or an infrared heating tube, and the foam part can be softened by preheating. The humidifying device can be a steam humidifying device.

The fully automatic foam thin-cutting device of the present invention also includes a control cabinet.

Compared with the prior art, the fully automatic foam thin-cutting device of the present invention has the following advantages:

Using a circular belt knife to cut foam parts can not only ensure the cutting speed but also reduce the cutting resistance. Using a long belt knife to cut can avoid the shaking of the belt knife joint.

The belt knife running precision control device controls the running stability and precision of the belt knife in all directions, avoiding any unnecessary shaking or deviation of the belt knife on the running plane, further improving the cutting stability and uniformity. At the same time, the overall inclination angle of the annular belt knife device is adjustable, ensuring the proper contact between the cutting blade and the foam piece, and improving the cutting precision.

In addition, the independently controllable fine grinding mechanism and coarse grinding mechanism are used to control the grinding angle of the band knife, which reduces the passivation wear of the knife during the cutting process, improves the cutting speed and cutting quality, reduces the frequency of tool replacement, and also realizes the smooth operation of the entire cutting process, and the cutting surface of the foam part is smooth and flat;

The fully automatic foam thin-cutting device can adjust the relative vertical distance between the feeding base and the annular belt knife device at any time to ensure the contact between the belt knife cutting edge and the cutting surface of the foam part, and eliminate the mechanical error of height adjustment through displacement positioning grating closed-loop control to improve the stability of uniform thin-cutting quality;

At the same time, a preheating device and a humidifying device are used to preheat and soften the foam piece before cutting, thereby reducing the cutting resistance between the band knife and the foam piece and improving the cutting accuracy.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a fully automatic foam thin-cutting device according to the present invention at one angle;

FIG2 is a schematic structural diagram of the fully automatic foam thin-cutting device of the present invention from another angle;

FIG3 is a schematic structural diagram of a cutting mechanism of a fully automatic foam thin-cutting device according to the present invention;

FIG4 is an enlarged schematic diagram of point A in FIG3 ;

FIG5 is a schematic structural diagram of the cutting mechanism of the fully automatic foam thin-cutting device of the present invention from another angle;

FIG6 is a schematic structural diagram of the fully automatic foam thin-cutting device of the present invention at another angle;

FIG7 is an enlarged schematic diagram of point B in FIG3;

FIG8 is an enlarged schematic diagram of point C in FIG3;

Illustrations of the accompanying drawings:

1. Cutting mechanism; 2. Foam feeding mechanism; 3. Frame; 10. Control cabinet; 11. Driving pulley; 12. Driven pulley; 13. Belt knife; 14. Belt knife bracket; 15. Knife clamping seat; 16. Knife stop positioning plate; 161. Knife stop member; 111. Guide wheel; 112. Pulley bracket; 113. Tensioning screw; 101. Upper fine grinding wheel; 102. Lower fine grinding wheel; 103. Upper coarse grinding wheel; 104. Lower coarse grinding wheel; 105. First positioning wheel; 106. Second positioning wheel; 107. Dust collecting plate; 131. Angle adjustment rod; 20. Foam member; 21. Feeding base; 22. Preheating device; 23. First guide column; 24. Sliding sleeve; 25. Reduction motor; 26. Guide rail; 27. Ball screw; 28. Driving motor; 211. First movable base; 212. Second movable base.

Detailed ways

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

Example 1

As shown in FIG1 , the fully automatic foam thin-cutting device disclosed in the present invention includes a frame 3 , a cutting mechanism 1 disposed on the frame 3 , a foam feeding mechanism 2 , and a control cabinet 10 for controlling the operation of the cutting mechanism 1 and the foam feeding mechanism 2 .

Furthermore, as shown in FIG2 , the foam feeding mechanism 2 of the fully automatic foam thin-cutting device includes a feeding base 21 and a driving device for driving the feeding base 21 to move; specifically, the feeding base 21 has a vacuum adsorption end to form a vacuum adsorption workbench for adsorbing and positioning the foam piece 20 placed on the feeding base 21; in order to facilitate the cutting of foam pieces with higher thickness and hardness, a preheating device 22 is provided above the feeding base 21, and the preheating device 22 includes a plurality of infrared heating tubes arranged in parallel.

The driving device for driving the feeding base 21 to move includes a first driving mechanism, as shown in FIG2 , wherein the first driving mechanism includes a second movable base 212 fixed to the feeding base 21 through a plurality of fixed brackets, a first guide column 23 connected to the second movable base 212, and a first movable base 211 connected to the first guide column 23 and arranged below the second movable base 212, and a sliding sleeve 24 threadedly connected to the first guide column 23, the sliding sleeve 24 is driven to rotate by a reduction motor 25, thereby driving the second movable base 212 and the first movable base 211 to move, so as to adjust the position of the feeding base 21; in order to ensure accurate adjustment of the moving position, a displacement positioning grating is also provided on the frame 3. Each displacement of the feeding base is controlled by the cooperation of a precision screw, a servo motor and a positioning grating, so that each movement error reaches the μ level, and then cooperates with the band knife operation precision control device to stably control the cutting precision and surface finish of the foam piece.

The driving device for driving the feeding base 21 to move further includes a second driving mechanism, as shown in FIG2 , which includes a ball screw 27 connected to the first movable base 211 through a slide (not marked in the figure) and a driving motor 28 for driving the ball screw 27 to rotate. In particular, the horizontal driving mechanism further includes a guide rail 26 provided on the base of the frame 3 and a guide slider provided on the first movable base 211 and slidably matched with the guide rail 26.

The cutting mechanism 1 of the fully automatic foam thin-cutting device of the present invention comprises a knife bracket 14, an annular knife device arranged on the knife bracket 14, a knife operation precision control device and an inching feeding control device.

As shown in FIG3 , the annular belt knife device includes a driving pulley 11, a driven pulley 12, a belt knife 13 wound around the driving and driven pulleys, and a plurality of guide wheels 111 for guiding the belt knife 13, and dust collecting plates 107 arranged on both sides of the upper and lower sides of the running plane of the belt knife 13. In this embodiment, multiple groups of dust collecting plates 107 can be arranged in the running path of the belt knife 13.

The belt knife running precision control device includes a positioning mechanism and a knife clamping mechanism. The positioning mechanism is shown in FIG3 and includes a pair of positioning members. In this embodiment, the pair of positioning members includes a second positioning wheel 106 and a first positioning wheel 105 respectively arranged on the left and right sides of the running plane of the belt knife 13. In this embodiment, two groups of positioning mechanisms are arranged along the running direction of the belt knife 13.

The knife clamping mechanism is shown in FIG4 , which includes a knife clamping seat 15 and two knife clamping plates, one above the other, disposed on the knife clamping seat 15, a gap for clamping the band knife 13 is formed between the two knife clamping plates, and also includes a knife blocking positioning plate 16 disposed on the knife clamping seat 15 and a knife blocking member 161 disposed on the knife blocking positioning plate 16, the knife blocking member 161 being specifically disposed on the cutting edge side of the band knife 13. In this embodiment, the knife blocking member 161 is a knife blocking wheel, and of course, it can also be a knife blocking plate. Of course, the number of knife clamping plates is not limited to two, and can also be multiple, or can also be a whole piece, on which a gap for clamping the band knife is disposed.

On this basis, the knife clamping mechanism also includes a top knife member (not shown in the figure), which is also arranged on the knife clamping seat 15. The top knife member is arranged on the back side of the band knife 13, that is, the opposite side of the cutting edge.

The knife clamping mechanism and positioning mechanism can fully control the belt knife to prevent the belt knife from deviating or shaking in the front, back, left, right, up and down directions when running, thereby achieving stability and precision control of the belt knife operation.

In order to adjust the thickness of the foam piece and the slice thickness, the belt knife operation precision control device also includes an angle adjustment mechanism, as shown in Figures 5-6, the angle adjustment mechanism includes an angle adjustment rod 131 hinged to the belt knife bracket 14, and the angle adjustment rod 131 is also hinged to the frame 3, thereby adjusting the overall inclination angle of the annular belt knife device by adjusting the inclination of the belt knife bracket 14. The dust suction plate 107, guide wheel 111, belt knife operation precision control device, etc. mentioned above are all arranged on the belt knife bracket 14 through corresponding fixing plates.

Furthermore, the belt knife operation precision control device also includes a belt knife tightening mechanism, which is used to tighten and loosen the belt knife, as shown in FIG3, including a pulley bracket 112 and a tensioning screw 113, and the tensioning screw 113 is connected to the pulley bracket 112 through a tensioning nut. Of course, in order to more completely realize the stability and precision control of the belt knife operation, the belt knife operation precision control device also includes a pulley elevation angle tension adjustment mechanism, which is used to realize the variable angle control of the pulley, thereby adjusting the elevation angle tension of the two pulleys.

The belt knife operation precision control device also includes a fine grinding mechanism and a coarse grinding mechanism. Combined with the diagram in Figure 7, it illustrates the fine grinding mechanism, which specifically includes an upper fine grinding wheel 101 and a lower fine grinding wheel 102 respectively arranged on the upper and lower sides of the belt knife 13 operation plane; combined with the diagram in Figure 8, it illustrates the coarse grinding mechanism, which specifically includes an upper coarse grinding wheel 103 and a lower coarse grinding wheel 104 respectively arranged on the upper and lower sides of the belt knife 13 operation plane.

The two fine grinding wheels and the two coarse grinding wheels are each driven individually by an independent sharpening motor, and the sharpening motor is installed on the motor mounting plate; in particular, in combination with the illustrated orientation of this embodiment 1, the first position adjustment mechanism and the second position adjustment mechanism can adopt a servo motor driven lead screw structure, and a slide seat that slides with the lead screw is installed on the motor mounting plate. The servo motor drives the lead screw to rotate and drives the motor mounting plate to move through the slide seat.

The inching feed control device includes a sensor device for sensing the running position of the knife seam. In this embodiment, an infrared sensor is specifically used. The inching feed control device also includes a control circuit board, which is used to control the contact position of the knife cutting edge side and the foam piece to be cut according to the knife seam position, that is, to control the cutting position of the knife cutting edge.

Taking the illustrated direction of this embodiment as an example, the working process of the fully automatic foam thin-cutting device of the present invention is as follows:

First, the variable frequency motor is started to drive the active pulley to rotate, and the band knife 13 starts to rotate counterclockwise under the drive of the active pulley 11. The position adjustment mechanism of the fine grinding mechanism and the position adjustment mechanism of the rough grinding mechanism are used to independently control the corresponding fine grinding wheel and the band knife 13, and the rough grinding wheel and the band knife 13 to maintain a suitable gap, and contact the cutting edge of the band knife 13 and start grinding to grind out a suitable cutting edge angle;

The knife holder 15 of the knife clamping mechanism fixes the belt knife 13 to prevent the belt knife 13 from vibrating up and down. The paired positioning members fix the belt knife 13 in the front-to-back direction to prevent the belt knife 13 from shaking back and forth. The separate knife blocking member 161 and the top knife member can further prevent the belt knife from deviating back and forth.

After the cutting blade is sharpened, the foam piece 20 is placed at a suitable position on the feeding base 21, and the vacuum device is started, and the vacuum suction end suctions and fixes the foam piece 20;

Start the reduction motor 25, and adjust the relative distance between the feeding base 21 and the annular cutting device so that the cutting surface (i.e., the upper surface) of the foam piece 20 just contacts the cutting edge;

When starting to cut, the preheating device 22 above the foam piece 20 is energized to start heating and softening the foam piece 20. After reaching the set temperature, the feeding base 21 is driven by the ball screw 27 to move toward the cutting edge. After completing one cut, the feeding base 21 returns and moves to the specified position according to the set cutting thickness. The height error is accurately corrected according to the displacement positioning grating reading. Then, the feeding base 21 is driven by the ball screw 27 to move toward the cutting edge again to start the next cut. If necessary, the humidifying device can be started to humidify and soften the foam piece.

During the operation of the belt knife, when the belt knife 13 rotates to the point where the belt knife joint approaches the sensor device of the inching feed control device, the sensor device senses the belt knife joint and controls the belt knife joint to avoid the running foam part cutting surface and controls the movement of the feeding base through the control circuit board, thereby realizing the coordination between the annular belt knife device and the feeding base, thereby controlling the feeding and cutting position of the foam part, ensuring that the belt knife joint will not leave cut marks on the foam slice, and keeping the cutting surface of the foam part smooth and smooth.

The fully automatic foam thin-cutting device provided by the present invention controls the overall inclination angle of the annular belt knife device and adjusts the position of the feeding base to ensure that the annular belt knife can cut the foam piece at a uniform speed and thickness, the resistance between the belt knife and the foam piece is small, and the cutting surface is flat and smooth; at the same time, the belt knife is accurately controlled in the up, down, left and right directions through the belt knife operation precision control device to avoid any unnecessary deviation or shaking of the belt knife during the cutting operation.

The fully automatic foam thin-cutting device of the present invention is particularly suitable for cutting PMI foam pieces and can cut foam slices with a thickness of 0.04-5 mm.

Of course, the arrangement positions of the cutting mechanism 1 and the foam feeding mechanism 2 of the fully automatic foam thin-cutting device disclosed in the present invention are not limited to the positions defined in this embodiment; for example, the positions of the cutting mechanism 1 and the foam feeding mechanism 2 can be swapped, or the two can be arranged laterally, and any possible arrangement is acceptable.

The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims (10)

1. A fully automatic foam thin-cutting device, characterized in that it comprises: a frame (3), a foam feeding mechanism (2) arranged on the frame, a cutting mechanism (1), and a control cabinet (10) for controlling the operation of the cutting mechanism (1) and the foam feeding mechanism (2); The foam feeding mechanism (2) comprises a feeding base (21) and a driving device for driving the feeding base (21) to move; The cutting mechanism (1) comprises a knife support (14), and an annular knife device, a knife operation precision control device and an inching feed control device mounted on the knife support (14); wherein the annular knife device is used for cutting a foam piece (20) positioned on the feeding base (21), the knife operation precision control device is used for controlling the stability and precision of the knife (13) during cutting, and the inching feed control device is used for controlling the cutting position of the knife cutting edge; The annular belt knife device further comprises a driving belt pulley (11) and a driven belt pulley (12), and the belt knife (13) is wound around the driving belt pulley (11) and the driven belt pulley (12); The belt knife operation precision control device comprises a positioning mechanism for controlling the belt knife (13) to deflect along the direction of the foam piece (20) operation plane and/or a knife clamping mechanism for controlling the belt knife (13) to deflect along a direction perpendicular to the foam piece (20) operation plane; and a belt knife adjustment mechanism, the belt knife adjustment mechanism comprising an angle adjustment rod (131), one end of the angle adjustment rod (131) being hinged to the frame (3), and the other end being hinged to the belt knife bracket (14); The positioning mechanism comprises positioning members arranged in pairs, wherein the positioning members are arranged on a cutting edge side of the band knife (13) and a back side opposite to the cutting edge side; The knife clamping mechanism comprises a knife clamping seat (15), a knife blocking positioning plate (16) arranged on the knife clamping seat (15), the knife blocking positioning plate (16) being provided with a knife blocking member (161) in contact with the cutting edge of the band knife (13), and/or a top knife member arranged on the knife clamping seat (15), the top knife member being arranged on the back side opposite to the cutting edge side of the band knife (13), and/or a knife clamping plate arranged on the knife clamping seat (15), the knife clamping plate having a clamping slit for clamping the band knife (13). 2. The fully automatic foam thin-cutting device according to claim 1, characterized in that the belt knife operation precision control device further comprises a fine knife sharpening mechanism and/or a coarse knife sharpening mechanism for controlling the knife sharpening angle; The fine grinding mechanism comprises an upper fine grinding wheel (101) and a lower fine grinding wheel (102) arranged in pair; The rough grinding mechanism comprises an upper rough grinding wheel (103) and a lower rough grinding wheel (104) which are arranged in pair. 3. The fully automatic foam thin-slicing device according to claim 2, characterized in that the fine grinding mechanism and the coarse grinding mechanism both include a position adjustment mechanism for controlling the movement of the grinding wheel position. 4. The fully automatic foam thin-cutting device according to any one of claims 1 to 3, characterized in that the inching feed control device comprises a sensor device for sensing the position of the knife seam during operation. 5. The fully automatic foam thin-cutting device according to any one of Claims 4, characterized in that a vacuum adsorption end for adsorbing and positioning the foam piece (20) is provided on the feeding base (21). 6. The fully automatic foam thin-cutting device according to claim 5, characterized in that the driving device comprises a first driving mechanism and a second driving mechanism; The first driving mechanism is used to control the displacement of the feeding base (21) along a feeding direction perpendicular to the foam piece (20); The second driving mechanism is used to control the displacement of the feeding base (21) along the feeding direction of the foam piece (20). 7. The fully automatic foam thin-cutting device according to claim 6, characterized in that the first driving mechanism comprises a first guide column (23) connected to the feeding base (21), a sliding sleeve (24) threadedly connected to the first guide column (23), and a reduction motor (25) driving the sliding sleeve (24) to rotate. 8. The fully automatic foam thin-cutting device according to claim 7, characterized in that the first driving mechanism further comprises a displacement positioning grating arranged on the frame (3) for positioning the moving position of the sliding sleeve (24). 9. The fully automatic foam thin-cutting device according to any one of claims 6 to 8, characterized in that the second driving mechanism comprises a ball screw (27), a driving motor (28) driving the ball screw (27) to rotate, and a slider moving linearly along the ball screw (27), wherein the slider drives the feeding base (21) to move linearly. 10. The fully automatic foam thin-cutting device according to claim 9, characterized in that the foam feeding mechanism further comprises a preheating device (22), wherein the preheating device (22) is arranged on the frame (3) and located above the feeding base (21) for preheating and softening the foam piece (20).