JP4994761B2 - Elastic foam punching device - Google Patents

Description

  The present invention relates to a perforating apparatus for an elastic foam in which an insertion hole for penetrating a shaft is formed in the elastic foam.

  For example, as a paper feed roller or toner supply roller of a copying machine, an insertion hole Wh of a shaft S is formed in a prismatic roller material made of an elastic foam W such as urethane foam or rubber sponge as shown in FIG. The shaft S is penetrated and bonded to the insertion hole Wh, and the outer peripheral surface of the roller material is machined into a cylindrical shape as shown in FIG. As an apparatus for opening the insertion hole Wh in the prismatic elastic foam W shown in FIG. 15, a device disclosed in Patent Document 1 has been proposed.

  In the punching device for an elastic body disclosed in Patent Document 1, a square cylindrical pressing member is erected and fixed on an upper surface of a work plate, and a prismatic elastic body is accommodated inside a cylindrical frame, and the pressing The cylindrical frame is fitted to the pressing member from above the member, and the elastic body is compressed by pressing the cylindrical frame downward with a pressing plate connected to the piston rod. And it penetrates the elastic body compressed while rotating a drilling tool from the through-hole formed in the center part of the said press plate and the cover plate of a cylindrical frame, and it drills to this elastic body. Then, by releasing the compressed state of the elastic body, a prismatic roller material having an insertion hole Wh as shown in FIG. 15 is obtained.

The elastic body punching device disclosed in Patent Document 1 has a problem in that work efficiency is low because it is necessary to perform a hole punching operation for each elastic body. In order to solve this problem, the following perforation methods have been conventionally used. That is, a flat plate-like elastic foam W as shown in FIG. 17 that can take a large number of prismatic elastic foams W is accommodated in a flat rectangular tube-like storage chamber 51a of a storage case 51 shown in FIG. Then, the fixed compression member 24 and the movable compression plate 34 are moved forward in the Z arrow direction between the pair of left and right position regulating members 23 separated from the movable compression plate 34 in the X arrow direction (see FIG. 18). The elastic foam W is compressed between. Next, among the large number of tool insertion holes 24a formed in the fixed compression member 24 of the housing case 51, the drill 47 is caused to enter the compressed elastic foam W from one tool insertion hole 24a at the end to form an insertion hole. To do. Then, after the first insertion hole forming operation is completed, the housing case 51 is sequentially moved in the X arrow direction to sequentially form the second and subsequent insertion holes, and the elastic foam W as shown in FIG. A large number of insertion holes Wh are formed. Thereafter, the flat elastic foam W is cut by a cutting machine between the insertion holes Wh to obtain a prismatic roller material as shown in FIG.
JP 2001-18197 A

  In the conventional perforating apparatus, the left and right side portions of the elastic foam W are orthogonal to the compression (Z arrow) direction in the process of compressing the elastic foam W by the movable compression plate 34 shown in FIG. Since it is displaced by being elastically deformed in the direction, it has been found that the following problem is difficult to predict. That is, in a state where the movable compression plate 34 is moved to the compression position indicated by the two-dot chain line in FIG. Thus, it is farthest from the position restricting member 23 in the direction of the arrow X, and as a whole, it is displaced in an arc shape as indicated by a two-dot chain line in plan view. Since the insertion hole Wh is drilled in the elastic foam W in this state, the center line of the insertion hole Wh is linear and the straightness is appropriate when the elastic foam W is compressed. However, in the natural state where the compressed state of the elastic foam W is released as shown in FIG. 19, the straightness of the insertion hole Wh is maintained in the middle portion of the elastic foam W in the left and right (X arrow) direction. The straightness of the insertion hole Wh decreases at both the left and right side portions, the central portion in the Z arrow direction of the insertion hole Wh is displaced outward in the X arrow direction, and is curved in an arc shape in plan view. As shown in FIG. 20B with respect to the insertion hole Wh of the prismatic roller material shown in FIG. 20A obtained by cutting the right side of the left and right side portions of the elastic foam W shown in FIG. When passing through the straight shaft S, the insertion hole Wh is forcibly straightened by the shaft S, so that the radial distance from the center of the shaft S of the outer peripheral surface of the roller material changes. For this reason, when the roller material is machined into a cylindrical shape, a portion where the material is insufficient appears and the outer peripheral surface of the roller does not become an appropriate cylindrical shape, resulting in a defective product.

  Further, in the compression step shown in FIG. 18, when the side end surfaces S1 and S2 of the flat elastic foam W are displaced so as to meander in the X arrow direction, the outer peripheral surface of the roller material is changed as shown in FIG. The meandering causes the same problem as described above.

  It has been found that the above-mentioned problem exists with some degree of difference even when the prismatic roller material shown in FIG. 15 is compressed to form the insertion hole Wh. That is, even if the outer peripheral surface of the roller material can be machined into an appropriate columnar shape, the shaft S penetrates the insertion hole Wh of the elastic foam W in the case shown in FIG. When the elastic foam W is subjected to excessive elastic deformation, a portion of the elastic foam W is forced to be small, and the bubbles in this portion are reduced, resulting in variations in the bubble diameter of the elastic foam W as a whole, or internal stress of the elastic foam W. The problem was that the roller could not be manufactured with the proper quality due to the non-uniformity.

  The present invention prevents the elastic foam from displacing in the direction intersecting the compression direction during the compression operation of the elastic foam, thereby improving the straightness of the insertion hole and the processing accuracy of the forming position. It is to provide a perforating apparatus.

In order to solve the above-described problems, the invention according to claim 1, the elastic foam is accommodated in the accommodating chamber of the accommodating case, the movable compression member is advanced into the accommodating chamber to compress the elastic foam, An elastic foam punching device in which a punching tool is inserted into an elastic foam in a compressed state to form an insertion hole in the elastic foam. In the elastic foam punching process, the elastic foam is compressed with respect to the housing case. Displacement preventing means for preventing displacement of the foam in a direction intersecting the compression direction is provided, and the housing case restricts the left and right edges of the foam relative to the support plate supporting the lower surface of the elastic foam. And a case main body provided with a fixed compression member that receives the compression force when the elastic foam is compressed, and a top surface of the position restriction member and the fixed compression member so as to be separated from each other. Before It is constituted by a cover plate that forms a storage chamber for elastic foam between the case body, and the storage chamber of the storage case is formed in a flat rectangular tube shape capable of storing a flat rectangular plate-like elastic foam, The fixed compression member is formed with a plurality of tool insertion holes through which a drilling tool is inserted in series at a predetermined pitch, and the displacement preventing means is formed of an elastic foam with respect to the upper surface of the support plate and the lower surface of the lid plate. Displacement preventing protrusions formed in the same direction as the compression direction, and formed on both upper and lower surfaces of the movable compression member that enters the storage chamber and reciprocates toward the fixed compression member, and the displacement prevention protrusions. And a guide groove that is slid along .

According to a second aspect of the present invention, in the first aspect , the case main body can reciprocate in the front-rear Z-axis direction and the left-right X-axis direction with respect to the apparatus frame via the Z-axis moving body and the X-axis moving body. It is attached to. The lid plate is attached to the X-axis moving body through a support frame and a Y-axis moving body so as to reciprocate in the vertical Y-axis direction. The drilling tool is rotatably mounted on the device frame by a rotation support mechanism at a predetermined position so as to correspond to one tool insertion hole among a plurality of tool insertion holes formed in the fixed compression member. Is the gist.

(Function)
In the present invention, the displacement preventing means prevents the elastic foam from being displaced in the direction intersecting the compression direction during the compression process of the elastic foam in the Z-axis direction with respect to the housing case. For this reason, the insertion hole of the appropriate straightness and forming position formed in the elastic foam in the compressed state is displaced in the direction intersecting the compression direction even when the elastic foam is restored from the compressed state to the non-compressed state. The straightness of the insertion hole and the processing accuracy of the formation position are improved.

  According to the present invention, the elastic foam is prevented from being displaced in a direction intersecting the compression direction in the Z-axis direction during the compression operation of the elastic foam, thereby improving the straightness of the insertion hole and the processing accuracy of the formation position. be able to. As a result, it is possible to prevent a defective product from being generated or the quality of the roller from being deteriorated in a manufacturing process in which a roller is formed by penetrating a shaft through the insertion hole of the elastic foam.

Hereinafter, an embodiment in which the perforating apparatus of the present invention is embodied will be described with reference to FIGS. This embodiment uses the same principle as that of the perforating apparatus shown in FIG.
As shown in FIG. 2, a pair of Z-axis guide rails 12 are laid on the upper surface of the apparatus frame 11 in the Z-axis direction that is the front-rear direction and in parallel with each other. A Z-axis moving body 13 is mounted on both Z-axis guide rails 12 so as to be reciprocable in the Z-axis direction by a Z-axis feed mechanism 14 such as an air cylinder. On the upper surface of the Z-axis moving body 13, a pair of X-axis guide rails 16 are laid in parallel to each other in the X-axis direction that is the left-right direction orthogonal to the Z-axis. An X-axis moving body 17 is mounted on both X-axis guide rails 16 so as to be able to reciprocate in the X-axis direction by an X-axis feed mechanism 18 constituted by, for example, a servo motor and a ball screw feed mechanism. On the upper surface of the X-axis moving body 17, a flat case body 21 that constitutes a housing case 51 together with a cover plate 28 described later is mounted by a plurality of (four in this embodiment) support rods 20. .

  As shown in FIG. 1, the case body 21 is fixed to the left and right side edges of the support plate 22 by bolts in a plan view, and the left and right edges of the elastic foam W are position-regulated. And a fixed compression member 24 fixed to a rear end edge (right end edge in FIG. 1) of the support plate 22 with a bolt. The fixed compression member 24 is formed with a plurality of (for example, 20) insertion holes 24a of a woodworking drill 47, which will be described later, as a drilling tool at an equal pitch in the X-axis direction.

  As shown in FIGS. 2 and 3, a support frame 25 is erected on the upper surface of the X-axis moving body 17, and a guide member 26 is attached to the upper portion of the support frame 25, and formed on the guide member 26. A Y-axis moving rod 27 as a Y-axis moving body is inserted into the pair of left and right guide holes 26a so as to be reciprocable in the Y-axis direction which is the vertical direction. Plates 28 are cross-linked horizontally. The lid plate 28 is mounted so as to be able to reciprocate in the Y-axis direction by a piston rod of an elevating air cylinder 29 attached to the guide member 26.

  2 and 3, when the cover plate 28 is moved downward from the upper retracted position by the lifting air cylinder 29, the lower surface of the cover plate 28 becomes the upper surface of the position restricting member 23 and the fixed compression member 24 of the case body 21. Touched. This state is shown in FIGS. 7 and 8, and the case body 21 and the cover plate 28 provide a storage chamber 51a for storing an elastic foam W such as urethane foam or rubber sponge in an uncompressed state. A housing case 51 is formed.

  As shown in FIG. 3, a block-shaped guide member 31 is fixed to the upper surface of the X-axis moving body 17, and a plurality of guide holes 31 a formed in the guide member 31 has a pair of left and right Z-axis movements. The rod 32 is supported so as to be able to reciprocate in the Z-axis direction, and a mounting plate 33 is connected to the tip of both Z-axis moving rods 32. A movable compression plate 34 as a movable compression member is horizontally attached to the upper end portion of the attachment plate 33 with bolts. The mounting plate 33 is reciprocated in the Z-axis (compression) direction by a piston rod of a compression air cylinder 35 disposed on the upper surface of the X-axis moving body 17. As shown in FIGS. 3 and 5, the distal end portion of the movable compression plate 34 enters an open portion between the position restricting members 23 at the front end (left end in FIGS. 3 and 5) of the case body 21. A plurality of through holes 34a are formed in the movable compression plate 34 in parallel with each other so as to correspond to the tool insertion holes 24a of the fixed compression member 24, and a tip end of a drill 47 enters each through hole 34a. It is possible.

  As shown in FIGS. 3 and 4, a support cylinder 41 is erected on the upper surface of the rear end (right end in FIG. 3) of the frame 11, and a Y-axis moving cylinder 42 is provided on the outer peripheral surface of the support cylinder 41. The position adjusting mechanism 43 is mounted so that the position in the Y-axis direction can be adjusted. A rotation support mechanism for a drill 47 is attached to the Y-axis moving cylinder 42. A rotating shaft 45 is supported on the Y-axis moving cylinder 42 through a pair of front and rear bearings 44 in the same direction as the Z-axis direction, and directed to the tool chuck 46 connected to the tip thereof in the Z-axis direction. The base end of the drill 47 is connected. As shown in FIG. 4, a motor 48 is attached to the side wall of the Y-axis moving cylinder 42, and the rotary shaft 45 is rotated via a belt transmission mechanism 49.

Next, the configuration of the main part of the present invention will be described.
As shown in FIG. 1, on the upper surfaces on both the left and right sides of the support plate 22, there are a plurality of strips (four on each side in this embodiment) as lateral displacement preventing ridges 22 a as a displacement preventing ridge in the compression direction. They are formed in the same direction as the Z-axis direction and in parallel with each other. The lid plate 28 is integrally formed with a plurality of lateral displacement prevention protrusions 28a as displacement prevention protrusions so as to correspond to the horizontal displacement prevention protrusions 22a of the support plate 22 in the vertical direction. . On the lower surface of the movable compression plate 34, a plurality of lower guide grooves 34b that are guided and moved along the respective lateral displacement prevention protrusions 22a of the support plate 22 are formed. Similarly, on the upper surface of the movable compression plate 34, the lid plate 28 is in contact with the upper surfaces of the position regulating member 23, the fixed compression member 24 and the movable compression plate 34. A plurality of upper guide grooves 34c that are guided and moved along are formed.

Next, the operation of the perforating apparatus configured as described above will be described.
First, as shown in FIG. 4, the X-axis moving body 17 is moved to the leftmost side in the X-axis direction, and the rightmost tool insertion hole 24 a of the tool insertion holes 24 a of the fixed compression member 24 is moved to the drill 47. Corresponding to the Z-axis direction. Next, as shown in FIGS. 5 and 6, the cover plate 28 is held at the upper retracted position, and the movable compression plate 34 is held at the retracted position by the retreat of the compression air cylinder 35. The elastic foam W is accommodated in the main body 21 as indicated by a two-dot chain line. In this state, the lower surface of the elastic foam W is supported by the upper surface of the support plate 22, and the lateral displacement prevention protrusion 22 a bites into the lower surface of the elastic foam W, and the upper surface of the elastic foam W is fixed to the position regulating member 23 and the fixed compression. The height is substantially the same as the upper surface of the member 24. It should be noted that the position restricting member 23 and the fixed compression are set so that the upper surface of the elastic foam W becomes substantially the same as the upper surfaces of the position restricting member 23 and the fixed compression member 24 according to the change in the thickness dimension of the elastic foam W. The member 24 includes a vertical position adjustment mechanism (not shown).

  Next, in FIG. 5, the elevating air cylinder 29 shown in FIG. 2 is moved forward to move the cover plate 28 from the retracted position to the lower operating position as shown in FIGS. In this state, as shown in FIG. 8, the position of the upper surface of the elastic foam W is regulated by the lower surface of the cover plate 28, and the lateral displacement preventing protrusion 28 a bites into the upper surface of the elastic foam W. As a result, both lateral displacement prevention protrusions 22a and 28a are in a state of being bitten into the upper and lower surfaces of the elastic foam W.

  Next, in FIG. 7, the compression air cylinder 35 is advanced to move the movable compression plate 34 forward in the Z-axis direction, and the elastic foam W is compressed in the Z-axis direction as shown in FIG. Next, the Z-axis feed mechanism 14 shown in FIG. 2 is operated, and the Z-axis moving body 13, the X-axis moving body 17, the support frame 25, the storage case 51, etc. (hereinafter referred to as the storage case 51, etc.) shown in FIG. ) In the Z-axis direction (to the right in FIG. 3). Then, the drill 47 is inserted into the compressed foam W from the rightmost tool insertion hole 24a in the X-axis direction of the fixed compression member 24 shown in FIG. The insertion hole Wh is formed.

  After the first insertion hole Wh is formed, the housing case 51 and the like are retracted in the Z-axis direction, the drill 47 is detached from the insertion hole Wh, and an air jet (not shown) is inserted from the through hole 34a of the movable compression plate 34. Using the nozzle, cleaning air is supplied into the insertion hole Wh of the foam W, and the insertion hole Wh is cleaned.

  After the drilling operation of the first insertion hole Wh, the X-axis feed mechanism 18 shown in FIG. 4 is operated to move the X-axis moving body 17 together with the housing case 51 and the like to the arrangement pitch of the tool insertion holes 24a in the X-axis direction. It moves by one pitch, and drills the insertion hole Wh of the second foam W. Thereafter, the third and subsequent insertion holes Wh are sequentially formed in the same manner, and after all the insertion holes Wh are formed, the compression air cylinder 35 is operated to move the movable compression plate 34. While moving from the compression position to the retracted position, the elevating air cylinder 29 is retracted, and the lid plate 28 is moved from the operating position to the upper retracted position. The elastic foam W thus compressed is restored to its original shape by its elastic restoring force, and an elastic foam W having a large number of insertion holes Wh formed in parallel as shown in FIG. 11 is obtained. Can do. The flat elastic foam W shown in FIG. 11 is cut into a large number of prismatic roller materials (see FIG. 15) by a cutter, and the shafts are passed through and bonded to the insertion holes Wh of the roller materials. The surface is machined into a cylindrical shape and used as, for example, a paper feed roller or a toner supply roller (see FIG. 16) of a copying machine.

According to the perforation apparatus of the said embodiment, the following effects can be acquired.
(1) In the above embodiment, the lateral displacement prevention protrusion 22 a is formed on the upper surface of the support plate 22 of the case body 21 in the same direction as the compression (Z-axis) direction, and the lateral displacement prevention protrusion is formed on the lower surface of the lid plate 28. The strips 28a are formed in the same direction as the compression direction, and the lateral displacement prevention protrusions 22a and 28a are bited into the upper and lower surfaces of the foam W, and the foam W is compressed by the movable compression plate 34. For this reason, when the foam W is compressed in the Z-axis direction, both side portions of the foam W in the X-axis direction are prevented from being displaced in the X-axis direction orthogonal to the compression direction, and the compression operation is reduced to the original compression. When the elastic foam W is restored to the non-compressed state, the straightness of the insertion hole Wh changes, or the formation position of the insertion hole Wh is displaced in the X-axis direction orthogonal to the compression direction. Thus, the processing accuracy of the insertion hole Wh can be improved. Accordingly, defective products are generated in the process of manufacturing the roller, and variations in the bubble diameter and internal stress in the elastic foam W are suppressed, so that a high-quality roller can be manufactured.

  (2) In the above embodiment, the lateral displacement prevention protrusions 22a and 28a are formed on the support plate 22 and the cover plate 28, and the guide grooves 34b and 34c are only formed on the movable compression plate 34. The manufacturing and assembling work can be easily performed and the cost can be reduced.

(3) In the above-described embodiment, the housing case 51 is formed to be separable by the case body 21 and the lid plate 28, so that the elastic foam W can be easily set on the case body 21.
(3) In the above-described embodiment, the lateral displacement prevention protrusions 22a and the lateral displacement prevention protrusions 28a are formed only on the left and right sides of the support plate 22 and the cover plate 28 of the case main body 21. Thus, the sliding resistance of the elastic foam W with respect to the support plate 22 and the lid plate 28 becomes weak, and the compression power can be reduced in the compression process of the elastic foam W by the movable compression plate 34.

  (4) In the above embodiment, the fixed compression member 24 of the case body 21 is provided with a large number of tool insertion holes 24a, and the drills 47 are sequentially inserted into the respective tool insertion holes 24a, so that the elastic foam W has a large number of insertion holes Wh. Therefore, the efficiency of the processing operation of the insertion hole Wh can be improved.

In addition, you may change the said embodiment as follows.
As shown in FIG. 12, the elastic foam W can be housed in the housing chamber 51a of the housing case 51 that is configured integrally, and the side wall with respect to the lower holding plate 51b and the upper holding plate 51c of the housing case 51 The mounting plate 52 to which the displacement preventing protrusion 52 a is attached may be caused to appear and disappear in the accommodation chamber 51 a by the position switching air cylinder 53.

  As shown in FIGS. 13 and 14, a guide groove 28b is formed in the Z-axis direction with respect to the lid plate 28, and a plurality of moving bodies 55 are accommodated in the guide groove 28b. A displacement prevention pin 56 serving as a displacement prevention means inserted into the foam W may be connected so that the displacement prevention pin 56 is moved in the Z-axis direction during the compression operation of the elastic foam W. Each moving body 55 is separated by a coil spring (not shown) in a process in which the elastic foam W is restored to an uncompressed state.

  Although not shown, the fixed compression member 24 of the case body 21 may be configured to be movable in the compression direction in the same manner as the movable compression plate 34. In this embodiment, the compression operation of the elastic foam W can be performed quickly.

The Z-axis guide rail 12, the Z-axis moving body 13, and the Z-axis feed mechanism 14 may be omitted, and the drill 47 may be reciprocated in the Z-axis direction.
The lateral displacement prevention protrusions 22a and 28a may be formed in the entire region of the support plate 22 and the cover plate 28. In this case, the elastic foam W is prevented from displacing in the direction intersecting the Z-axis direction of the elastic foam W at the central portion in the X-axis direction, and the prismatic shape obtained from the elastic foam W at the central portion is prevented. In the process of manufacturing the roller from the roller material, a variation in bubble diameter and internal stress in the elastic foam W is suppressed, and a high-quality roller can be manufactured.

-You may comprise so that the cover plate 28 may be attached or detached with respect to the said case main body 21 by manual operation.
-It may be embodied in a punching device that compresses and punches a single prismatic roller material. In this case, it is possible to manufacture a high-quality roller by suppressing variations in the bubble diameter and internal stress in the elastic foam W in the process of manufacturing the roller from a prismatic roller material.

The disassembled perspective view which shows the case main body, lid plate, and movable compression plate which are used for the punching apparatus of this invention. The front view which abbreviate | omitted the drill of the drilling apparatus and its rotation support mechanism. The right view of a punching apparatus. The top view which abbreviate | omitted the guide member of the drilling apparatus, the Y-axis movement rod, the air cylinder for raising / lowering, and the cover plate. The longitudinal cross-sectional view explaining the drilling operation | movement with respect to an elastic foam. FIG. 6 is a cross-sectional view of FIG. 5. The longitudinal cross-sectional view explaining the drilling operation | movement with respect to an elastic foam. FIG. 8 is a cross-sectional view of FIG. The longitudinal cross-sectional view explaining the drilling operation | movement with respect to an elastic foam. FIG. 10 is a cross-sectional view of FIG. 9. The perspective view which shows the flat elastic foam in which the penetration hole was formed. The cross-sectional view of the storage case which shows another embodiment of this invention. The fragmentary longitudinal cross-sectional view of the storage case which shows another embodiment of this invention. FIG. 14 is a sectional view taken along line 1-1 of FIG. 13. FIG. 3 is a perspective view showing a prismatic roller material for manufacturing a roller used in a copying machine. FIG. 3 is a perspective view showing a cylindrical roller used in a copying machine. The perspective view which shows a flat elastic foam. The cross-sectional view which shows the perforation apparatus of the conventional elastic foam. The perspective view which shows the flat elastic foam in which the penetration hole was formed. (A) is a longitudinal sectional view of the roller material alone, (b) is a longitudinal sectional view of the roller material penetrating the shaft. The longitudinal cross-sectional view of the roller raw material which penetrated the shaft.

Explanation of symbols

  W ... elastic foam, Wh ... insertion hole, 11 ... device frame, 13 ... Z-axis moving body, 17 ... X-axis moving body, 21 ... case main body, 22 ... support plate, 23 ... position regulating member, 24 ... fixed compression Member 24a ... tool insertion hole 25 ... support frame 28 ... lid plate 28b, 34b, 34c ... guide groove 34 ... movable compression plate as movable compression member 51 ... accommodating case 51a ... accommodating chamber.

Claims (2)

An elastic foam is stored in the storage chamber of the storage case, a movable compression member is inserted into the storage chamber to compress the elastic foam, and a punching tool is inserted into the compressed elastic foam to be inserted into the elastic foam. In a perforating device for an elastic foam that forms holes,
Displacement preventing means for preventing the elastic foam from being displaced in the direction intersecting the compression direction during the compression process of the elastic foam with respect to the housing case is provided ,
The housing case is provided with a pair of position regulating members for regulating the left and right side edges of the foam on the support plate that supports the lower surface of the elastic foam, and the compression force is applied when the elastic foam is compressed. A case main body provided with a fixed compression member to be received, and a lid plate that is detachably contacted with the upper surfaces of both the position regulating member and the fixed compression member to form an elastic foam housing chamber between the case main body and the case main body. Configured,
The storage chamber of the storage case is formed in a flat rectangular tube shape so as to be able to store a flat rectangular plate-like elastic foam, and the fixed compression member has a plurality of tool insertion holes through which a drilling tool is inserted at a predetermined pitch. In series,
The displacement prevention means includes a displacement prevention protrusion formed in the same direction as the compression direction of the elastic foam with respect to the upper surface of the support plate and the lower surface of the lid plate, and enters the storage chamber toward the fixed compression member. An elastic foam punching device, comprising: a guide groove formed on both upper and lower surfaces of the movable compression member that is reciprocally moved, and is slid along the displacement prevention protrusion . 2. The X-axis moving body according to claim 1, wherein the case main body is attached to the apparatus frame so as to be able to reciprocate in the front-rear Z-axis direction and the left-right X-axis direction via the Z-axis moving body and the X-axis moving body. The cover plate is mounted so as to be able to reciprocate in the vertical Y-axis direction via a support frame and a Y-axis moving body, and a plurality of tool insertion holes formed in the fixed compression member are mounted on the apparatus frame. An elastic foam punching device, wherein the punching tool is rotatably mounted by a rotation support mechanism at a predetermined position so as to correspond to one of the tool insertion holes.

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