JP3435087B2 - Product integration device in trimming machine - Google Patents

Description

Detailed Description of the Invention

[0001]

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

[0002]

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

FIG. 7 is a perspective view showing an assembling state of a table and a pressing member of a conventional product stacking apparatus, and FIG. 8 is a configuration diagram of the punching apparatus.

As shown in these figures, in the conventional product stacking apparatus, the upper punching blade 18 which is vertically driven and the lower punching blade 17 in the stationary position are engaged with each other to punch the product 11.
A combing blade-shaped table 1 which is installed in a punching device for dropping the punched product 11 from a through hole 21 provided in the lower punching blade 17, and which is horizontally arranged below the through hole 21. The table 1 is arranged on the side of the ascending / descending region of the table 1 and intermittently descends from the origin position of the table 1 to a predetermined position in conjunction with the vertical reciprocating motion of the upper punching blade 18, and then to the origin position. An elevating mechanism 4 for ascending 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 comb blade shape extending in the vertical direction so as to intersect with the table 1. And is provided on the lower surface of the fixed table 3 and advances / retracts below the table 1 at the time of the lowest descent to horizontally move the pressing member 2 along the forming direction of each comb blade 6 of the table 1. Comprising a slide mechanism 5 consisting of a cylinder that.

As described above, the product accumulating device in the trimming machine installed in the conventional plastic continuous sheet forming mechanism generally comprises an elevating table, a pressing member, and a conveyor.

[0006]

However, in the above-mentioned conventional product stacking apparatus, while the products are being stacked on the elevating table, the tables are descending and accumulating at a constant pitch until the lower limit is reached. The structure and control are complicated because it uses a pressing member to dispense and the servo mechanism is used for the lifting mechanism.

In addition, the time for paying out by the pressing member and the time for the table to return to the top become a waiting time, and the trimming operation is temporarily stopped, so that the productivity is reduced by this time.

Further, when the products are accumulated on the table, there is a problem that they are tilted and overlapped due to the influence of static electricity or the like.

In order to solve these problems, as a conventional method for removing static electricity from a product, there is a method before the trimming of the product, or a method of spraying the static elimination air at the accumulating portion after the trimming of the product. However, it was not effective for removing static electricity generated in the mold part during trimming.

The present invention eliminates the above-mentioned problems, uses an open / close type guide tube instead of the conventional lifting table and pressing member, and blows static electricity removing air from above the mold or directly below the mold. An object of the present invention is to provide a product stacking device in a trimming machine capable of stabilizing product stacking and improving productivity.

[0011]

In order to achieve the above object, the present invention provides [1] an upper die and a lower die for cutting products connected to a sheet in a product stacking device of a trimming machine, A knockout rod that moves up and down corresponding to the upper mold and knocks out the cut product, and a first static elimination air outlet opened in the knockout rod are provided, and the product is cut by the upper mold and the lower mold. When pushing this cut product downward with the knockout rod,
The static elimination air is blown from the first static elimination air outlet to remove the static electricity of the product.

[2] In a product stacking device of a trimming machine, a fixed guide is provided which has an upper mold and a lower mold for cutting products connected to a sheet, and guides the cut products below the lower mold. The opening / closing guide tube is provided below the fixed guide, and the conveyor for accumulating the products is arranged below the opening / closing guide tube.

[3] In a product stacking device of a trimming machine, a fixed guide is provided which has an upper mold and a lower mold for cutting products connected to a sheet, and guides the cut products below the lower mold. Provided below this fixed guide
An opening / closing guide tube is provided in the
Is arranged, and a second static elimination air outlet for spraying static elimination air onto the fixed guide is provided on the fixed guide to eliminate static electricity of the pre-accumulation products.

[0014] [4] The product stacking apparatus in the above [2] or [3], wherein the trimming device, the fixing of the guide is disposed immediately below the lower mold, a pair of adjustable apart by external size of the product The guide and a drive mechanism for moving the pair of guides so that they can come into contact with and separate from each other are provided with a second discharge air outlet on the product side of the pair of guides to remove static electricity from the cut product. It is a thing.

[ 5 ] In the product accumulating device of the trimming machine according to [2] or [ 3 ], when the products accumulated in the open / close type guide cylinder are counted and accumulated in a fixed number, the open / close guide is provided. At the same time when the cylinder is opened, the products accumulated on the conveyor are sent to the unloading side for a certain distance, and when the product is finished, the door of the open / close guide cylinder is closed.

[ 6 ] In the product stacking device of the trimming machine according to the above [2] or [3], the operation of the trimming press is continuously performed and the set number of products are discharged from the end of the conveyor. It was done like this.

[ 7 ] The product stacking device in the trimming machine according to the above [2] or [3], wherein a vacuum suction hole is formed in the surface of the conveyor so that the product on the upper surface of the conveyor is sucked. Is.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

FIG. 1 is a cross-sectional view (cross-sectional view taken along the arrow C in FIG. 2) of a product stacking device in a trimming machine showing the embodiment of the present invention, and FIG. 2 is a view of the embodiment of the present invention. FIG. 3 is a cross-sectional view of the product stacking device that crosses the product discharge direction.
2 is a sectional view taken along arrow A in FIG. 2, FIG. 4 is a sectional view taken along arrow B in FIG. 2, FIG. 5 is a sectional view taken along arrow D in FIG. 1, and FIG. 6 is an enlarged view of portion E in 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 attached to a lower portion of the opening 5A of the upper table 5, and a knockout drive cylinder 1 is further attached via a bracket 1A provided on an upper portion of 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 the lower end of the hollow bar 2. The 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 on the lower frame 10. A lower die (lower punching blade) 8 is provided on the bolster 9 via a bracket 9A.

A guide (first fixed guide) 15 is interposed in the opening 9B of the bolster 9 via a screw shaft 16. The guide 15 has a static elimination air blowing hole 2
0 is provided. The guide 15 is movable with respect to the bolster 9. That is, the pair of screw shafts 16 are rotatably supported by the bolster 9 so as to traverse the opening 9B of the bolster 9. A pair of guides 15 are screwed into and supported by the screw shaft 16. One guide 15
A right screw mechanism 16A is formed on the screw shaft portion into which A is screwed, and a left screw mechanism 16B is formed on the screw shaft portion into which the other guide 15B is screwed. A handle 18 is provided at one end of one of the screw shafts 16, and the pair of screw shafts 1
A chain 19 is provided on the other end side of 6 via a sprocket. Then, by rotating the handle 18, the pair of guides 15 move so as to be able to come into contact with and separate from each other by a screw action.

As a result, the distance between the guides 15 can be adjusted according to the size of the product.

The lower frame 10 directly below the guide 15
A fixed guide cylinder (second fixed guide) 11 is provided in the fixed guide cylinder 11, and a slit 22 is provided in the fixed guide cylinder 11, and an air nozzle 21 is located therein. In addition, 7
Is a sheet.

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

On the frame 14A of the product stacking mechanism 14,
Guide support bracket 51 arranged along the horizontal direction
Is provided. The guide support bracket 51 includes a fixed guide 35, which is arranged at regular intervals and has an opening in the product unloading direction, and a door 23 which is openably and closably mounted on the fixed fulcrum shaft 24 via the support bar 52. It 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 an expansion / contraction means provided on the frame 14A, for example, a hydraulic cylinder, a screw jack, etc., and a guide rail 27.
Guided and supported by.

An endless conveyor 28 that conveys the product dispensed from the product accumulating mechanism 14 is disposed immediately below the opening / closing guide tube 12.

A product suction hole 29 connected to a vacuum box 30 is formed in the endless conveyor 28. The product 32, which is pushed out by the air from the air nozzle 21 provided in the slit 22 of the fixed guide tube 11 and stacked (stacked) from above on the open / close guide tube 12 with the door 23 closed, has a product suction hole 29 of the conveyor 28. It is adsorbed by the suction from and conveyed. In addition, conveyor 2
The number of products stacked in 8 is counted by a sensor (not shown) one by one while falling, and when the number reaches a predetermined number, the door 2
After 3 is opened, it is conveyed by the conveyor 28 as described above.

The operation of the product stacking device in the above trimming machine will be described below.

When the product 31 is cut by the upper mold 6 and the lower mold 8, the cut product 31 is knocked out by the knockout rod 3.
At the time of pushing downward with, the static elimination air is blown out from the static elimination air outlet 4 to remove the static electricity of the product 31.

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

(2) Since the static electricity of the product 31 can be eliminated during trimming the product 31 by the upper mold 6 and the lower mold 8 and at the time of knocking out (pushing down) immediately after that, the accumulation of the product immediately after trimming is stabilized.

(3) Further, it is possible to change the setting of the dwell time at the lower limit of the knockout device, and particularly in the case of a product which is likely to be charged with static electricity, the dwell time at the lower limit is lengthened to remove the static electricity. Can be large.

(4) By performing deceleration control at the bottom dead center of the upper table 5 (usually crank motion) on which the upper die 6 is mounted, the time for discharging the static elimination air at the time of trimming is extended to eliminate static electricity. Can increase the effect of.

Further, when the product 31 reaches the guide (first fixed guide) 15, the static elimination air is discharged from the static elimination air blowing hole 2
It is sprayed from 0 to the product 31 from the closest position, and the static electricity of the product 31 is removed.

In that case, (1) Spray the static elimination air directly below the lower mold 8.

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

(3) The static elimination air is blown out from the first fixed guide 15 which is movable according to the width of the product 31, and can perform the two functions of the guide and the static elimination.

(4) The static elimination effect is great because the static elimination air is blown on the product 31 immediately after it is pulled out.

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

Next, the product 31 is a fixed guide tube (second
The fixed guide 11 is pushed downward by the air from the air nozzle 21 of the slit 22 and is guided by the open / close guide tube 12 with the door 23 closed and stacked on the right end portion of the conveyor 28. Therefore, the pushed-out products 31 are appropriately counted, and when a preset number of products 31 are stacked, the door 23 is opened and the products are conveyed to the left by the conveyor 28. In that case, by suction from the product suction hole 29 of the conveyor 28 as described above,
The stacked products 32 can be stably transported.

As described above, the product stacking mechanism 14 includes the fixed guide tube 11, the open / close guide tube 12 and the conveyor 28.
After being trimmed and trimmed, the product 31 pushed down by the knockout device passes through the fixed guide tube 11 and the open / close guide tube 12 and drops onto the conveyor 28 to be conveyed.

The fixed guide cylinder 11 is a fixed cylinder attached to the lower part for each step of the lower mold 8. A slit 22 is formed in the upper part of this fixed cylinder, and an air nozzle 21 is attached obliquely downward. ing. The air purge from the air nozzle 21 can stabilize the fall of the product 31.

The open / close guide tube 12 is provided with a door 23 below the fixed guide tube 11 for opening / closing in the carrying-out direction of the product 31. This door 23 is a rear opening / closing cylinder 13.
It is opened and closed by the link mechanism.

The product 3 is placed in the opening / closing guide tube 12 at a certain height.
When 1 is stacked, the door 23 is opened and the conveyor 28 on the lower surface is moved at a constant pitch.

Since the time during which the conveyor 28 moves is shorter than the removal cycle of the trimming device, the trimming operation can be continuously performed.

The conveyor 28 for transportation is, for example, a belt type (resin, metal belt, etc.) and is transported at a constant pitch by a stepping motor or the like. In order to prevent the stacked products 32 from falling at the time of starting / stopping the constant pitch movement or the like, product suction holes 29 of the conveyor (belt part) 28
It is possible to suck the stacked products 32 on the belt. Although not shown, a partition plate can be attached between each product row.

The present invention is not limited to the above embodiments, and various modifications can be made based on the spirit of the present invention, and these modifications are not excluded from the scope of the present invention.

[0050]

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

(A) It is possible to effectively remove static electricity from products, and it is possible to reliably integrate products. In particular,
Appropriate static elimination can be performed by adapting to the product removal process where static electricity is generated in the product.

(B) Since there is no waiting time for moving the pressing member and the table as in the conventional case, the products can be efficiently accumulated and the productivity can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a product stacking device in a trimming machine along a product discharge direction showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a product stacking device that crosses the product discharge direction according to the embodiment of the present invention.

FIG. 3 is a sectional view taken along the arrow A in FIG.

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

5 is a cross-sectional view taken along the arrow D in FIG.

FIG. 6 is an enlarged view of a portion E of FIG.

FIG. 7 is a perspective view showing an assembled state of a table and a pressing member of a conventional product stacking apparatus.

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

[Explanation of symbols]

1 Knockout drive cylinder 1A, 9A Bracket 2 Hollow bar 3 Knockout rod 4 Static electricity removal air outlet 5 Upper table 5A Upper table opening 6 Upper die (upper punching blade) 7 Seat 8 Lower die (lower punching blade) 9 Bolster 9B Bolster opening 10 Lower frame 11 Fixed guide tube (second fixed guide) 12 Opening / closing guide tube 13 Opening / closing cylinder 14 Product stacking mechanism 14A Frame 15 (15A, 15B) Guide (first fixed guide) 16 Screw shaft 16A Right screw mechanism 16B Left screw mechanism 18 Handle 19 Chain 20 Electrification air blowing hole 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 Integrated ( Stacked product 35 Fixed guide 51 Bar supporting the de support bracket 52 fixed support shaft

Continuation of front page (56) Reference JP-A-7-237185 (JP, A) JP-A-57-75814 (JP, A) JP-A-55-148144 (JP, A) JP-A-9-328251 (JP , A) JP 10-128697 (JP, A) JP 1-107497 (JP, A) JP 8-39578 (JP, A) JP 60-258055 (JP, A) 4-76399 (JP, U) Actual development Sho 55-93511 (JP, U) Actual public 61-35436 (JP, Y1) Registered utility model 3051471 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B26F 1/40 B26F 1/44 B29C 51/26 B65G 57/03

Claims (7)

(57) [Claims] 1. A product accumulating device in a trimming machine, comprising: (a) an upper die and a lower die for cutting a product continuously provided on a sheet; and (b) an upper die and a lower die corresponding to the upper die, which are vertically moved and cut. A knockout rod for knocking out the product; and (c) a first static elimination air outlet opening in the knockout rod, and (d) when the upper mold and the lower mold cut the product, the cut product A product stacking device in a trimming machine, characterized in that static electricity of a product is removed by blowing out static elimination air from the first static elimination air outlet when pushing out downward with the knockout rod. 2. A product accumulating device in a trimming machine, which has an upper die and a lower die for cutting products connected to a sheet, and a fixed guide provided below the lower die for guiding the cut products. A product accumulating device in a trimming machine in which an opening / closing guide tube is provided below the fixed guide, and a conveyor for accumulating products is arranged below the opening / closing guide tube. 3. A product accumulating device in a trimming machine, which has an upper mold and a lower mold for cutting products connected to a sheet, and a fixed guide provided below the lower mold for guiding the cut products. , Open and close below the fixed guide
A guide tube is provided, and products are collected under the open / close guide tube.
A product accumulating device in a trimming machine, characterized in that a static electricity is removed from the products before accumulating by arranging a conveyer and a second static elimination air outlet for spraying static elimination air to the fixed guides. 4. The product stacking apparatus in claim 2 or 3, wherein the trimming device, the fixing of the guide is disposed immediately below the lower mold, a pair of adjustable apart by external size of the product guides and, the A trimming machine comprising a drive mechanism for moving a pair of guides so that they can be moved toward and away from each other, and a second discharge air outlet is provided on the product side of the pair of guides to remove static electricity of the cut product. Product accumulator in. 5. The product accumulating device in the trimming machine according to claim 2 or 3 , wherein when the products accumulated in the opening / closing guide cylinder are counted and accumulated in a certain number, the opening / closing guide cylinder opens. At the same time, the product accumulated on the conveyor is sent to the unloading side for a certain distance, and when the product is finished, the door of the opening / closing guide cylinder is closed, and the product accumulating device in the trimming machine. 6. The product stacking device of the trimming machine according to claim 2, wherein the trimming press is continuously operated to discharge the set number of products from the end of the conveyor. Product accumulating device for trimming machine. 7. The trimming machine according to claim 2 or 3, wherein a vacuum suction hole is formed in the surface of the conveyor to suck the product on the upper surface of the conveyor. Product accumulation device.