JP2000233399A - Product accumulation device in trimming machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a product accumulation device in a trimming machine capable of stabilizing accumulation of products and improving productivity by using an opening and closing type guide cylinder instead of a lifting table and a pressing member and blowing anti-static air for removing static electricity from an upper part of a die or from just below the die. SOLUTION: This product accumulation device in a trimming machine is provided with an upper mold 6 and a lower mold 8 cutting a product 31 provided continuously on a sheet 7, a knock out rod 3 moving vertically by corresponding to the upper mold 6, and a first anti-static air outlet 4 opened on the knock out rod 3. When the product 31 is cut by the upper mold 6 and the lower mold 8 and the cut product 32 is pushed out downwards by the knock out rod 3, anti-static air is blown from the first anti-static air outlet 4 to remove static electricity of the product.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a product accumulating apparatus for a trimming machine for sheet molded products.

[0002]

2. Description of the Related Art Conventionally, techniques in such a field include:
For example, there is one disclosed in Japanese Utility Model Publication No. 6-38818.

FIG. 7 is a perspective view showing a state of assembling a table and a pressing member of a conventional product accumulating apparatus, and FIG. 8 is a structural view of the punching apparatus.

[0004] As shown in these figures, the conventional product accumulating apparatus punches a product 11 by engaging an upper punching blade 18 driven up and down with a lower punching blade 17 at a stationary position.
A punching device for dropping a punched product 11 from a through-hole 21 provided in the lower punching blade 17, comprising a comb-shaped table 1 horizontally arranged below the through-hole 21; After the table 1 is intermittently lowered to a predetermined position from the origin position of the table 1 in conjunction with the vertical reciprocating motion of the upper punching blade 18, the table 1 is arranged on the side of the lifting area of the table 1, and then moved to the origin position. An elevating mechanism 4 for raising and returning, a fixed table 3 provided adjacent to the tip of the table 1 at the time of the lowest descent, and a pressing member 2 formed in a vertically comb-like shape that can intersect with the table 1 Provided on the lower surface of the fixed table 3 and advanced and retracted below the table 1 at the time of lowermost movement to horizontally move the pressing member 2 along the direction in which the comb blades 6 of the table 1 are formed. Comprising a slide mechanism 5 consisting of a cylinder that.

[0005] As described above, a product accumulating apparatus in a trimming machine installed in a conventional plastic continuous sheet forming mechanism generally includes an elevating table, a pressing member, and a conveyor.

[0006]

However, in the above-mentioned conventional product accumulating apparatus, while accumulating the products on the elevating table, the table is accumulated at a constant pitch and reaches the lower limit. Is paid out by a pressing member, and servo control is used for the elevating mechanism, so that the structure and control are complicated.

[0007] Furthermore, the time for paying out by the pressing member and the time for returning the table to the upper side become a waiting time, and the trimming operation is temporarily stopped, so that the productivity is reduced by the time.

[0008] Furthermore, when products are integrated on a table, there is a problem that the products are inclined and overlap due to the influence of static electricity or the like.

In order to solve these problems, as a method of neutralizing a product, there is a method of blowing static elimination air at a stage before trimming the product or at an integrated portion after trimming the product. It was not effective in removing static electricity generated at the mold part.

The present invention eliminates the above problems, uses an openable / closeable guide cylinder in place of the conventional lifting table and pressing member, and blows static electricity removing air from above or immediately below the mold. An object of the present invention is to provide a product accumulating device in a trimming machine capable of stabilizing product accumulation and improving productivity.

[0011]

In order to achieve the above object, the present invention provides: (1) In a product accumulating apparatus in a trimming machine, an upper die and a lower die for cutting a product connected to a sheet are provided. A knockout rod that moves up and down in response to the upper mold and a first static elimination air outlet that is opened to the knockout rod, and when the product is cut by the upper mold and the lower mold,
When the cut product is pushed downward by the knockout rod, static elimination air is blown from the first static elimination air outlet to remove static electricity from the product.

[2] In a product accumulating apparatus of a trimming machine, an upper die and a lower die for cutting a product connected to a sheet are provided, and a fixed guide is provided below the lower die.
An opening / closing guide cylinder is provided below the guide, and a conveyor for accumulating products is arranged below the opening / closing guide cylinder.

[3] In the product accumulating device of the trimming machine, an upper die and a lower die for cutting a product connected to a sheet are provided, and a fixed guide is provided below the lower die.
The fixed guide is provided with a second static elimination air outlet for blowing static elimination air to the product so that static electricity of the product before integration is removed.

[4] In the product accumulating apparatus of the trimming machine according to [1] or [3], a fixed guide is provided below the lower die, and an opening / closing guide cylinder is provided below the guide. A conveyor for accumulating products is arranged below.

[5] In the product accumulating apparatus of the trimming machine according to [2] or [4], the fixed guide is provided with a second static elimination air outlet for blowing static elimination air to the product, and the static electricity of the product before accumulation is provided. Is to be removed.

[6] In the product accumulating apparatus of the trimming machine according to the above [2], [3] or [4], the fixed guide is disposed immediately below the lower die, and the interval is adjusted according to the outer size of the product. A pair of guides, and a drive mechanism for moving the pair of guides so as to be able to freely move toward and away from each other. The pair of guides is provided with a second discharge air outlet on the product side so as to remove static electricity from the removed products. It was made.

[7] In the product accumulating apparatus of the trimming machine according to the above [2] or [4], the products accumulated in the openable guide cylinder are counted, and when a certain number of products are accumulated, the open / close guide is opened. At the same time as the tube is opened, the products accumulated on the conveyor are sent to the carry-out side for a certain distance, and when the operation is completed, the door of the opening / closing guide tube is closed.

[8] In the product accumulating apparatus of the trimming machine according to the above [2] or [3], the operation of the trimming press is continuously performed, and the products counted by the set number are discharged from the end of the conveyor. It is like that.

[0019]

[9] In the product accumulating apparatus of the trimming machine according to the above [2] or [3], a vacuum suction hole is formed in a surface of the conveyor, and the product on the upper surface of the conveyor is sucked.

[0020]

Embodiments of the present invention will be described below.

FIG. 1 is a cross-sectional view (a cross-sectional view taken along the arrow C in FIG. 2) of a product accumulating apparatus in a trimming machine along a product discharging direction according to an embodiment of the present invention, and FIG. FIG. 3 is a cross-sectional view of a product accumulation device that crosses a product discharge direction.
2 is a sectional view taken along the arrow A in FIG. 2, FIG. 4 is a sectional view taken along the arrow B in FIG. 2, FIG. 5 is a sectional view taken along the arrow D in FIG. 1, and FIG.

As shown in these figures, the upper table 5
Is attached to a lifting device (not shown). An upper die (upper punching blade) 6 is mounted below the opening 5A of the upper table 5, and a knockout drive cylinder 1 is mounted via a bracket 1A provided above the upper table 5.

A hollow bar 2 is provided at the tip of the knockout drive cylinder 1, and a knockout rod 3 is provided at a lower end of the hollow bar 2. This knockout rod 3 communicates with the hollow bar 2. A pressure source is connected to the hollow portion of the knockout rod 3, and a static elimination air outlet 4 is formed at the lower end of the knockout rod 3.

A bolster 9 is provided above the lower frame 10. A lower die (lower punching blade) 8 is provided above the bolster 9 via a bracket 9A.

A guide (first fixed guide) 15 is interposed in the opening 9 B of the bolster 9 via a screw shaft 16. The guide 15 has a blowing hole 2 for discharging air.
0 is provided. The guide 15 is movable with respect to the bolster 9. That is, a pair of screw shafts 16 are rotatably supported by the bolster 9 so as to cross the opening 9B of the bolster 9. A pair of guides 15 are screwed and supported on the screw shaft 16. One guide 15
A right screw 16A is formed in the screw shaft portion into which A is screwed, and a left screw 16B is formed in the screw shaft portion into which the other guide 15B is screwed. A handle 18 is provided at one end of one screw shaft 16, and a chain 19 is provided at the other end of the pair of screw shafts 16 via a sprocket. When the handle 18 is rotated, the pair of guides 15 move so as to be able to contact and separate by a screw action.

Thus, the distance between the guides 15 can be adjusted according to the dimensions of the product.

The lower frame 10 immediately below the guide 15
Is provided with a fixed guide tube (second fixed guide) 11. The fixed guide tube 11 is provided with a slit 22 in which the air nozzle 21 is located. Note that 7
Is a sheet.

On the other hand, the product accumulating mechanism 14 has an opening / closing guide tube 12 provided immediately below the fixed guide tube 11 and connected to the fixed guide tube 11.

The frame 14A of the product accumulation mechanism 14 has
Guide support bracket 51 disposed along the horizontal direction
Is provided. The guide support bracket 51 includes a fixed guide 35 disposed at a fixed interval and having an opening in the product unloading direction, and a door 23 provided to be openable and closable on the fixed fulcrum shaft 24 via a support bar 52. Is provided. The door 23 closes or opens the opening of the fixed guide 35. A bar 26 is connected to the door 23 via a link 25. The bar 26 is moved by expansion / contraction means provided on the frame 14A, for example, a hydraulic cylinder, a screw jack, or the like.
Guided and supported.

An endless conveyor 28 for conveying the products discharged from the product stacking mechanism 14 is provided immediately below the opening / closing guide cylinder 12.

A product suction hole 29 connected to the vacuum box 30 is formed in the endless conveyor 28. The product 32 pushed out and accumulated (stacked) by the air from the air nozzle 21 provided in the slit 22 of the fixed guide tube 11 from above into the openable / closed guide tube 12 with the door 23 closed is supplied to the product suction hole 29 of the conveyor 28. It is sucked by suction from and transported. In addition, conveyor 2
8 are counted by a sensor (not shown) one by one while falling, and when a predetermined number is reached, the door 2
3 is opened, and is conveyed by the conveyor 28 as described above.

Hereinafter, the operation of the product accumulating device in the trimming machine will be described.

When the product 31 is cut by the upper die 6 and the lower die 8, the cut product 31 is knocked out by the knockout rod 3.
When the product 31 is pushed downward, the static elimination air is blown from the static elimination air outlet 4 to remove static electricity from the product 31.

In this case, (1) static elimination air can be constantly blown from the center of the upper die 6 to the surface of the product 31 for each process, so that static elimination of the product 31 is effective.

(2) Since the static electricity of the product 31 can be eliminated even when the product 31 is being trimmed by the upper die 6 and the lower die 8 and immediately after knocking out (thrusting down), the integration of the product immediately after trimming is stabilized.

(3) In addition, the dwell time at the lower limit of the knockout device can be set and changed, and especially in the case of a product which is easily charged with static electricity, the dwell time at the lower limit is lengthened so that the effect of static elimination can be obtained. Can be increased.

(4) By performing deceleration control at the bottom dead center of the upper table 5 (usually a crank motion) on which the upper die 6 is mounted, the time during which the static elimination air is blown at the time of trimming is extended to eliminate static. The effect of can be raised.

Further, when the product 31 reaches the guide (first fixed guide) 15, the static elimination air is supplied to the static elimination air blowing hole 2.
0 sprays the product 31 from the closest position, and further removes static electricity from the product 31.

In this case, (1) the static elimination air is blown immediately below the lower die 8.

(2) The static elimination air is blown from outside the product 31 by the first fixed guide 15 of the bolster 9 below the lower die 8.

(3) The structure is such that the static elimination air is blown out from the first fixed guide 15 which is movable in accordance with the width of the product 31, and can perform two functions of the guide and the static elimination.

(4) Since the static elimination air is blown from immediately near the product 31 immediately after being removed, the static elimination effect is large.

The static elimination air blowing device is also effective when applied to a conventional system using a lifting table and a pressing member.

Next, the product 31 is fixed guide cylinder (second
The guide 23 is pushed downward by the air from the air nozzle 21 through the slit 22 of the slit 22, guided by the open / close guide cylinder 12 with the door 23 closed, and stacked at the right end of the conveyor 28. Therefore, the products 31 that are pushed out are counted appropriately, and when a predetermined number of products 31 are stacked, the door 23 is opened and the products 31 are transported to the left side by the conveyor 28. At that time, as described above, by suction from the product suction hole 29 of the conveyor 28,
The stacked products 32 can be stably transported.

As described above, the product accumulation mechanism 14 includes the fixed guide cylinder 11, the open / close guide cylinder 12, and the conveyor 28.
After trimming, the product 31 pushed down by the knockout device falls through the fixed guide tube 11 and the open / close guide tube 12 onto the conveyor 28 and is conveyed.

The fixed guide cylinder 11 is a fixed cylinder attached to the lower part of each step of the lower die 8, and a slit 22 is formed in the upper part of the fixed cylinder, and the air nozzle 21 is attached obliquely downward. ing. By the air purge from the air nozzle 21, the falling of the product 31 can be stabilized.

The opening / closing guide tube 12 is provided with a door 23 which is located below the fixed guide tube 11 and opens and closes in the direction in which the product 31 is carried out. This door 23 is located on the rear opening / closing cylinder 13.
And opened and closed by the link mechanism.

The product 3 is kept at a certain height in the opening / closing guide cylinder 12.
When 1 is stacked, the conveyor 28 on the lower surface moves at a constant pitch at the same time as the door 23 opens.

The time required for the conveyor 28 to move is shorter than the trimming cycle of the trimming device, so that the trimming operation can be performed continuously.

The conveyor 28 for conveyance is, for example, a belt type (resin, metal belt, etc.), and is conveyed at a constant pitch by a stepping motor or the like. In order to prevent the product from falling down at the time of start / stop such as constant pitch movement, the stacked products 32 on the belt can be sucked from the product suction hole 29 of the conveyor (belt portion). In addition,
Although not shown, a partition plate can be provided between product rows.

It should be noted that the present invention is not limited to the above-described embodiment, and various modifications are possible based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

[0052]

As described above, according to the present invention, the following effects can be obtained.

(A) The static elimination of the product can be effectively performed, and the product can be reliably integrated. In particular,
Accurate static elimination can be performed by adapting to a product removal process in which static electricity occurs in the product.

(B) Since there is no waiting time for the moving time of the pressing member and the table as in the related art, it is possible to efficiently accumulate products and improve productivity.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a product accumulating apparatus in a trimming machine along a product discharging direction according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a product accumulating apparatus which crosses a product discharging direction according to an embodiment of the present invention.

FIG. 3 is a sectional view taken in the direction of arrow A in FIG. 2;

FIG. 4 is a sectional view taken along the arrow B in FIG. 2;

FIG. 5 is a sectional view taken in the direction of arrow D in FIG. 1;

FIG. 6 is an enlarged view of a portion E in FIG. 5;

FIG. 7 is a perspective view showing a state of assembling a table and a pressing member of a conventional product accumulation device.

FIG. 8 is a configuration diagram of a punching device of a conventional product accumulation device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Knockout drive cylinder 1A, 9A Bracket 2 Hollow bar 3 Knockout rod 4 Static elimination air outlet 5 Upper table 5A Upper table opening 6 Upper die (upper punching blade) 7 Sheet 8 Lower die (lower punching blade) 9 Bolster 9B Opening of bolster 10 Lower frame 11 Fixed guide cylinder (second fixed guide) 12 Opening / closing guide cylinder 13 Opening / closing cylinder 14 Product accumulating mechanism 15 (15A, 15B) Guide (first fixed guide) 16 Screw shaft 16A Right screw Mechanism 16B Left-hand screw mechanism 18 Handle 19 Chain 20 Blow hole of static elimination air 21 Air nozzle 22 Slit 23 Door 24 Door fixed fulcrum shaft 25 Link 26 Bar 27 Guide rail 28 Conveyor 29 Product suction hole 30 Vacuum box 31 Product 32 Stack (stack) Products 51 Guide support Bracket 52 Bar supporting fixed fulcrum shaft

Claims (9)

[Claims] 1. A product accumulating apparatus for a trimming machine, comprising: (a) an upper die and a lower die for cutting a product connected to a sheet; and (b) a knockout rod that moves up and down in accordance with the upper die. (C) having a first static elimination air outlet opened to the knockout rod, and (d) when the product is cut by the upper mold and the lower mold, the cut product is pushed downward by the knockout rod. At this time, a product accumulation device in a trimming machine, wherein static electricity of a product is removed by blowing out static elimination air from the first static elimination air outlet. 2. A product accumulating device for a trimming machine, comprising an upper die and a lower die for cutting a product connected to a sheet, a fixed guide provided below the lower die, and an open / close operation below the guide. A product accumulating device in a trimming machine in which a guide cylinder is provided, and a conveyor for accumulating products is arranged below the opening and closing guide cylinder. 3. A product accumulating device in a trimming machine, comprising an upper die and a lower die for cutting a product connected to a sheet, a fixed guide provided below the lower die, and the fixed guide having a product. A product accumulation device for a trimming machine, comprising: a second static electricity removal air outlet for blowing static elimination air to the product; 4. The product accumulating device in the trimming machine according to claim 1, wherein a fixed guide is provided below the lower die, an opening / closing guide tube is provided below the guide, and an opening / closing guide tube is provided below the opening / closing guide tube. A product accumulating device in a trimming machine that arranges a conveyor for accumulating products. 5. The product accumulating device in a trimming machine according to claim 2 or 4, further comprising a second static elimination air outlet for blowing static elimination air onto the fixed guide, thereby eliminating static electricity from the product before accumulation. A product integration device in a trimming machine. 6. The product accumulating device in the trimming machine according to claim 2, wherein the fixed guide is disposed immediately below the lower die, and a pair of guides whose distance can be adjusted according to the outer size of the product. A trimming machine comprising a drive mechanism for moving the pair of guides so as to be able to freely contact and separate from each other, comprising a second discharging air outlet on the product side of the pair of guides, and removing static electricity from the removed products. Product integration equipment in 7. The product accumulating device in the trimming machine according to claim 2, wherein the products accumulated in the openable guide tube are counted, and when the products are accumulated in a certain number, the openable guide tube is opened. At the same time, the products accumulated on the conveyor are sent to a carry-out side for a fixed distance, and when the products are completed, the door of the opening / closing guide cylinder is closed, and the product accumulation device in the trimming machine is characterized. 8. The product accumulating apparatus in the trimming machine according to claim 2, wherein the operation of the trimming press is continuously performed, and the products counted by the set number are discharged from the conveyor end. Product integration device in a trimming machine. 9. The trimming machine according to claim 2, wherein a vacuum suction hole is formed in a surface of the conveyor, and a product on an upper surface of the conveyor is sucked. Product integration device.