JP2008055568A - Housing tool of elastic foam for use in compression/punching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a housing tool of an elastic foam for use in a compression/punching device capable of handling the compressed elastic foam as a single body, executing punching work while rotating the elastic foam and improving the machining accuracy of the internal circumferential face of an insertion hole formed at the elastic foam. <P>SOLUTION: The elastic foam is compressed by inner end faces of both compression pins which are inserted into both ends of a housing chamber 12a of a tubular housing case 12, and is housed in the housing chamber 12a. Retaining projection strips 18b of connecting/retaining tools 18 are engaged with small-diameter parts 15b and steps 15c formed at outside ends of both the compression pins 15, connecting projection strips 18a are engaged with small-diameter half tubes 13c and 14c formed in first and second case pieces 13 and 14, and the connecting projection strips 18a are locked to locking projection strips 13d and 14d formed in the small-diameter half tubes 13c and 14c. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elastic foam storage jig used in a compression / piercing device that can store an elastic foam in a compressed state and handle it as a single unit.

  For example, as a paper supply roller or a 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 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. 20, a device disclosed in Patent Document 1 or Patent Document 2 has been proposed.

  In the drilling device disclosed in Patent Document 1, a cylindrical frame is fixed to a support base, and a pressing body supported by the support base in a reciprocating manner via a guide rail is provided inside the frame body. And compresses the prismatic elastic foam (roller material). Thereafter, the cylindrical blade is rotated to enter the compressed elastic foam from the blade insertion hole formed in the frame, and a hole (insertion hole) is formed in the elastic foam.

Further, the punching device for an elastic body disclosed in Patent Document 2 has a rectangular cylindrical pressing member standing and fixed on the upper surface of the work plate, and the elastic body (roller material) is accommodated inside the cylindrical frame. The cylindrical body is fitted to the pressing member from above the pressing member, and the elastic body is compressed by pressing the cylindrical frame downward by a pressing plate connected to the piston rod. Then, the through hole formed in the central portion of the pressing plate and the lid of the cylindrical frame is inserted into the compressed elastic body while rotating the drill, and the insertion hole is drilled in the elastic body. .
JP-A-8-126997 JP 2001-18197 A

  In the compression device for the elastic foam (elastic body) disclosed in Patent Documents 1 and 2, each member that accommodates the compressed elastic foam is mounted in a non-movable position at a predetermined position of the support base or work plate. Therefore, the compressed elastic foam cannot be handled as a single body. For this reason, it is necessary to install a perforating device for perforating the elastic foam on the side or the upper side of the compression device, which limits the layout of the compression device and the perforating device and reduces the degree of design freedom. It was.

  In addition, since the conventional elastic foam compression device cannot rotate the compressed elastic foam, it is necessary to perforate the cylindrical foam (drill) by entering the elastic foam while rotating. Due to the rotation of the cylindrical cutter, the chips are pressed against the inner peripheral surface of the insertion hole drilled by the centrifugal force, and are difficult to be discharged to the outside from the chip relief groove formed in a spiral shape on the cylindrical cutter (drill). Accordingly, the chips are not properly discharged during the drilling operation, and chips are caught between the outer peripheral surface of the drilling tool and the inner peripheral surface of the insertion hole, and the inner peripheral surface is not processed smoothly. Thus, there is a problem that the processing accuracy of the inner peripheral surface of the insertion hole is lowered. When the processing accuracy of the insertion hole of the elastic foam is lowered, when the shaft and the elastic foam are bonded by passing through the insertion hole Wh and heating the shaft whose outer peripheral surface is coated with the hot melt adhesive, The adhesion area decreases and a uniform adhesion force cannot be obtained. As a result, for example, when used as a toner supply roller, the shaft and the elastic foam may be broken and the function as the roller may not be properly exhibited.

  The present invention solves the above-mentioned problems in the prior art, can handle the compressed elastic foam as a single unit, and can also perform a perforating operation while rotating the elastic foam. An object of the present invention is to provide an elastic foam housing jig used in a compression / piercing device that can improve the processing accuracy of the inner peripheral surface of the insertion hole formed in the inner wall.

  In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that an elastic foam can be accommodated in a compressed state and has an accommodation case having an accommodation chamber open at both ends, inserted into the accommodation chamber, and And two compression pins used for the compression operation of the elastic foam. According to a first aspect of the present invention, there are provided two holding means mounted between the housing case and the two compression pins, respectively, for holding the two compression pins in the compression position of the elastic foam, and the two compression pins. A tool insertion hole that is formed in at least one of the compression pins and can insert a drilling tool into the compressed elastic foam is provided.

  According to a second aspect of the present invention, there is provided a storage case having a storage chamber capable of storing an elastic foam in a compressed state and having one end closed and the other end opened; And one compression pin used for operation. According to a second aspect of the present invention, there is provided a holding means for holding the compression pin in a compression position of the elastic foam, mounted between the storage case and the compression pin, and one end of the compression pin or the storage chamber. A tool insertion hole for inserting a drilling tool into the compressed elastic foam formed in at least one of the closed portions is provided.

  According to a third aspect of the present invention, in the first or second aspect, the storage case is divided into two case pieces along a plane passing through the central axis of the storage chamber. It is comprised so that connection is possible by connection means, such as a concave connection tool which clamps an outer peripheral surface.

According to a fourth aspect of the present invention, in the third aspect, the connecting means for the two case pieces and the holding means for the compression pin are formed by a single connecting / holding tool.
According to a fifth aspect of the present invention, in the fourth aspect of the present invention, a small-diameter half-cylinder portion is formed at each end of the case pieces, and a locking protrusion is provided on the outer peripheral surface near the tip of each half-tube portion. A small diameter portion and a step portion are provided at one end of the compression pin. The connecting / holding tool includes a connecting ridge formed in a concave shape so as to sandwich the small-diameter half-cylinder portion in a state where both the case pieces are in contact with each other and to be locked to the locking ridge. The holding protrusion is formed in a concave shape so as to be fitted to the small diameter portion of the compression pin and to lock the step portion.

(Function)
According to the present invention, in a state where the storage case is held by the case holding mold of the compression device, the non-compressed elastic foam is stored in the storage chamber of the case. In this state, the compression pin is moved from the outside of the storage chamber to the inside of the storage chamber by the compression pin moving member of the compression device, and the elastic foam is compressed into the storage chamber of the storage case. In this state, the holding means is attached to the housing case and the compression pin, and the compression pin is held at the compressed position of the elastic foam by the holding means. Due to the compression reaction force of the elastic foam, the compression pin receives an external force in the direction of coming out of the storage chamber, and the holding means is held at the holding position against the external force. Therefore, the housing jig comprising the housing case, the compression pin, and the holding means is handled as a single body in a state where the compressed elastic foam is held.

  This invention can handle the elastic foam compressed in the storage case of the storage jig as a single unit together with the storage jig, and improves the degree of freedom in designing the elastic foam compression device and the punching device. Can do. Further, according to the present invention, the compressed elastic foam can be rotated together with the receiving jig, and a non-rotating drilling tool can be inserted into the elastic foam to perform the drilling work. Chips can be discharged smoothly from the hole, and the processing accuracy of the inner peripheral surface of the insertion hole formed in the elastic foam can be improved. In this invention, even if the elastic foam in the compressed state is rotated at a high speed, the chips do not receive the rotational centrifugal force, so that the chips are discharged smoothly, and the drilling tool is fed at a low speed in a non-rotating state. The processed surface of the inner peripheral surface of the insertion hole formed in the elastic foam can be a smooth finished surface.

Hereinafter, an embodiment embodying an elastic foam housing jig used in the compression / piercing device of the present invention will be described with reference to FIGS.
A cylindrical storage case 12 of the elastic foam storage jig 11 shown in FIG. 1 is separable by first and second case pieces 13 and 14 divided into semi-cylindrical shapes as shown in FIG. It is configured. With the case pieces 13 and 14 joined as shown in FIGS. 1 and 2, a cylindrical storage chamber 12a is formed at the center of the storage case 12 by the two semi-cylindrical round grooves 13a and 14a. The Two compression pins 15 and a compressed elastic foam W for compressing a cylindrical elastic foam (an elastic foam W having no insertion hole Wh shown in FIG. 19) are accommodated in the storage chamber 12a. I am doing so. A tool insertion hole 15a for inserting a drilling tool for forming an insertion hole Wh in the compressed elastic foam W is formed at the center of both compression pins 15, and a small diameter portion 15b and a stepped portion 15c are formed at one end. Is formed.

  As shown in FIG. 3, positioning holes 13 b are formed at two locations on the joint surface of the first case piece 13. The second case piece 14 has two mounting holes 14b (only one is shown) corresponding to the positioning holes 13b. The mounting holes 14b have the positioning holes 13b as shown in FIG. Positioning pins 16 to be inserted into the are attached by bolts 17. Then, both the first and second case pieces 13 and 14 are held in a regular combined state by engaging both the pins 16 with the positioning holes 13b.

  Semi-cylindrical small-diameter half-cylinder portions 13c and 14c are formed at both ends of the first and second case pieces 13 and 14, respectively, and semicircular arc-shaped locking protrusions are formed on the outer peripheral surfaces near the end portions. Strips 13d and 14d are formed. The case pieces 13 and 14 are connected by a connecting / holding tool 18 shown in FIG. The connecting / holding tool 18 has a function of connecting the first and second case pieces 13 and 14 as shown in FIGS. 1 and 2, and the compression pin 15 is provided in the storage chamber 12a. It has a function to prevent it from leaving. The connecting / holding tool 18 is fitted so as to sandwich both the cylindrical portions with respect to the both small-diameter half-cylinder portions 13c, 14c, and the concave connecting ridges connecting the first and second case pieces 13, 14. 18a is provided. Further, the connecting / holding tool 18 holds the compression pins 15 in the compressed position in a state where the compression pins 15 accommodated in the accommodation chamber 12a of the accommodation case 12 compress the elastic foam W. A concave holding ridge 18b is provided. Then, an operator engages the connecting protrusion 18a of the connecting / holding tool 18 with both the small-diameter half-cylinder portions 13c, 14c, and engages with the engaging protrusions 13d, 14d. The holding protrusion 18b is fitted to the base end portion of the small diameter portion 15b, and the step portion 15c is locked by the holding protrusion 18b. Thereby, the compression pin 15 is prevented from coming out of the storage chamber 12a of the storage case 12 by the compression reaction force of the compressed elastic foam W.

  As shown in FIG. 1, positioning holes 13e are formed at two locations on the lower outer peripheral surface of the first case piece 13, and positioning holes 14e are also formed at two locations on the upper outer peripheral surface of the second case piece 14. ing.

Next, based on FIGS. 4-7, the compression apparatus for compressing and accommodating the elastic foam W in the said accommodation jig | tool 11 is demonstrated.
As shown in FIG. 6, on the upper surface of the horizontal substrate 22 attached to the front side (left side in FIG. 6) upper end portion of the substantially U-shaped side surface 21, the receiving jig 11 is arranged as shown in FIGS. 4 and 7. A lower case holding mold 23 having a semi-cylindrical round groove 23a for horizontally holding the first case piece 13 at a predetermined position is attached. Positioning pins 24 inserted into the positioning holes 13e on the outer periphery of the first case piece 13 are erected in two places in the round groove 23a.

  On the side of the lower case holding mold 23, as shown in FIGS. 4, 5, and 7, a pair of left and right lower elastic foam holding molds 25 are arranged along a common guide rail 26 that is directed in the left and right directions. Thus, the lower case holding mold 23 is supported so as to be able to approach or separate. Both holding molds 25 are formed with a semi-cylindrical round groove 25a similar to the round groove 13a of the first case piece 13, and the compression pin 15 and the lower half of the elastic foam W are accommodated in the round groove 25a. To be.

  As shown in FIG. 4, a cylinder 28 is horizontally disposed on the upper surface of the horizontal substrate 22 corresponding to the holding molds 25, and as shown in FIG. 7, at the tip of the piston rod 29 of the cylinder 28. The distal end portion of the small diameter portion 15b of the compression pin 15 is detachably engaged with an engagement hole 30b drilled in the distal end surface 30a of the connected pressing pin 30. A gap g is formed between the distal end surface 30a of the pressing pin 30 and the step portion 15c of the compression pin 15 so that an operator can enter the holding protrusion 18b of the connection / holding tool 18. ing.

  As shown in FIG. 6, on the upper surface of the horizontal substrate 22, a rotating arm 32 is pivotable in the vertical direction by a connecting pin 33 via a bracket 31 so as to be positioned in the vicinity of the lower case holding mold 23. An upper case holding die 34 that is supported and joined to the upper surface of the lower case holding die 23 is attached to the rotating arm 32. The upper case holding die 34 is formed with a semi-cylindrical round groove 34a capable of accommodating the second case piece 14 of the accommodation jig 11, and the outer peripheral surface of the case piece 14 can be adsorbed in the round groove 34a. Suction cups 35 are mounted at a plurality of locations (for example, four locations). Positioning pins 36 inserted into the positioning holes 14e of the second case piece 14 are erected in two places in the circular groove 34a.

  As shown in FIG. 6, a cylinder 37 is erected on the lower portion of the frame 21 so as to be rotatable, and a link 39 connected to the rotating arm 32 is connected to the piston rod 38. When the piston rod 38 of the cylinder 37 of the first position switching mechanism K1 configured by the rotating arm 32, the cylinder 37, the piston rod 38, the link 39 and the like is raised, the rotating arm 32 is connected to the connecting pin 33. And the upper case holding mold 34 is switched from the upper retracted position to the lower operating position where the upper case holding mold 34 is joined to the lower case holding mold 23, and the first and second case pieces 13 and 14 that are simply contacted with each other. Are clamped and fixed from above and below.

  As shown in FIGS. 4 and 5, the upper case holding mold 34 has left and right side upper elastic members having semi-cylindrical round grooves 41 a corresponding to the lower elastic foam holding molds 25 in the vertical direction. The foam holding mold 41 is mounted by the same connection mechanism as the bracket 31, the rotation arm 32 and the connection pin 33. Both upper elastic foam holding dies 41 have an upper retracted position and a lower operating position joined to the upper surface of the lower elastic foam holding mold 25 by a second position switching mechanism K2 similar to the first position switching mechanism K1. It is mounted so that the position can be switched between.

  Although not shown, a positioning hole and a pin are provided on the joint surface of the lower case holding mold 23 and the upper case holding mold 34 and the joint surface of the lower elastic foam holding mold 25 and the upper elastic foam holding die 41, respectively. It has been.

Next, the operation of compressing the elastic foam using the housing jig 11 and the elastic foam compressing device will be described with reference to FIGS. 4 and 8 to 14.
FIG. 4 shows a state in which each member of the compression device is held at the retracted position, and the compression pin 15 of the housing jig 11 is engaged with the round groove 25 a of the lower elastic foam holding die 25. In this state, the first case piece 13 is formed as shown in FIG. 8 in a state where the first and second case pieces 13 and 14 of the housing jig 11 are simply in contact with the round groove 23a of the lower case holding mold 23. Engaged. Next, the cylinder 27 is advanced to move both holding dies 25, and the front end surface thereof is brought into contact with the end surface of the first case piece 13 as shown in FIG. After this step, the operator may house the compression pin 15 in the circular groove 25a of the both holding dies 25 and engage the distal end portion of the small diameter portion 15b with the engagement hole 30b of the pressing pin 30. Good.

  Thereafter, in FIG. 8, the first position switching mechanism K1 is operated to move the upper case holding die 34 from the retracted position to the operating position shown in FIG. 9, and the first and second case pieces 13, 14 are moved to the lower and upper cases. It is sandwiched between the holding dies 23 and 34. Then, after the outer peripheral surface of the second case piece 14 is adsorbed by the suction cup 35, the upper case holding die 34 is formed as shown in FIG. 10 with the first case piece 13 left on the lower case holding die 23. The second case piece 14 is moved to the retracted position. Next, the operator accommodates in the round groove 13 a of the first case piece 13 and the round groove 25 a of both holding molds 25 so that the lower half of the uncompressed elastic foam W is positioned between the compression pins 15. Is done.

  Next, in FIG. 10, the first and second position switching mechanisms K1 and K2 are operated, and the upper case holding mold 34 and both holding molds 41 are moved from the retracted position to the operating position as shown in FIG. The second case piece 14 on the upper case holding mold 34 side is combined with the first case piece 13, both holding molds 41 are joined to both holding molds 25, and the elastic foam W and the upper half of the compression pin 15 are second. It is accommodated in the round groove 14 a of the case piece 14 and the round groove 41 a of both holding dies 41.

  Next, in FIG. 11, both the cylinders 28 are operated to advance the pressing pin 30 and the compression pin 15, and the elastic foam W is accommodated in the accommodation chamber 12 a of the accommodation case 12 by both the compression pins 15 as shown in FIG. 12. The compression pins 15 are moved into the housing chamber 12 a leaving the small diameter portion 15 b, and the step portion 15 c of the compression pin 15 is moved to the same position as the end surface of the housing case 12.

  Further, in FIG. 12, the second position switching mechanism K2 is operated to move both holding molds 41 from the operating position to the retracted position as shown in FIG. It is moved from the operating position to the retracted position. In this state, using the gap g between the compression pin 15 and the pressing pin 30, the connection / holding tool 18 is fitted to both ends of the housing case 12 as shown in the enlarged view. The second case pieces 13 and 14 are held inseparable and cannot be pulled out by the compression reaction force of the elastic foam W in which the compression pin 15 is compressed.

  In FIG. 13, the cylinder 28 is operated to move the piston rod 29 and the pressing pin 30 from the operating position to the retracted position as shown in FIG. 14, and the first position switching mechanism K1 is operated to hold the upper case. The mold 34 is moved from the operating position to the retracted position. In this state, the storage jig 11 is removed from the lower case holding mold 23 by the operator.

  The compressed elastic foam W is held in the housing case 12 of the housing jig 11 as described above, and the housing jig 11 is carried into a punching device (not shown) by an operator, as shown in FIG. The holding jig 11 is held so as to be directed in the vertical direction, and the receiving jig 11 is rotated at a predetermined position. Then, the non-rotating drilling tool T enters the elastic foam W from the insertion hole 15 a of the compression pin 15 located on the lower side, and the insertion hole Wh is formed in the elastic foam W.

  Next, the operation of taking out the elastic foam W housed in the housing case 12 of the housing jig 11 is a procedure reverse to the compressing operation of the elastic foam W using the elastic foam compression device described above, that is, The procedure described in FIGS. 14, 13, 12, 11, and 10 is performed.

According to the housing jig 11 of the above embodiment, the following effects can be obtained.
(1) In the above embodiment, the elastic foam W can be handled as a single unit while being held in a compressed state in the containing jig 11 constituted by the containing case 12, the compression pin 15, and the connecting / holding tool 18. The compression device and the perforation device can be arranged separately, and the degree of freedom in designing both devices can be improved. Moreover, while the accommodation jig | tool 11 of the elastic foam W is rotated, it is also possible to make the drilling tool T non-rotating. In this case, since the chips are not subjected to centrifugal force during the drilling operation, they are drilled. Chips are smoothly discharged from the insertion hole Wh, and the processing accuracy of the insertion hole Wh can be improved.

  (2) In the above embodiment, even if the elastic foam W in a compressed state is rotated at a high speed, the chips are not subjected to the rotational centrifugal force, so that the chips are discharged smoothly and the drilling tool T is not rotated. By feeding at low speed, the processing surface of the inner peripheral surface of the insertion hole Wh formed in the elastic foam W can be made a smooth finished surface, and the processing accuracy of the insertion hole Wh can be improved. For this reason, when the shaft and the elastic foam W are bonded by heating the shaft whose outer peripheral surface is coated with the hot melt adhesive through the insertion hole Wh of the elastic foam W and heating, the bonding area becomes wide, Uniform adhesion can be obtained. Therefore, when the elastic foam W is used as, for example, a toner supply roller of a copying machine, the adhesion failure between the shaft and the elastic foam W is prevented, and the function as a roller can be properly exhibited.

  (3) In the above-described embodiment, the elastic foam W can be simultaneously compressed from the both end surfaces by the two compression pins 15 inside the storage chamber 12a of the storage case 12, and the compression operation can be performed quickly. Further, as compared with the method in which the elastic foam W is compressed from only one side, the compressive stress acting on the elastic foam W is uniformed as a whole without being biased. Therefore, the elastic foam W can be made into a solid compressed state with almost no porosity in which no bubbles are present, and the processing accuracy of the inner peripheral surface of the insertion hole Wh by the drilling tool T can be improved. it can.

  (4) In the above embodiment, the housing case 12 is divided into the two case pieces 13, 14, so that the lower half of the elastic foam W is rounded with the one case piece 13 supported horizontally. After being accommodated in 13a, the middle part of the uncompressed elastic foam W can be easily set in the accommodation chamber 12a of the accommodation case 12 by joining the other case piece 14 to the upper surface of the one case piece 13. Can do.

  (5) In the above embodiment, the connecting means for connecting the first and second case pieces 13, 14 and the holding means for holding the compression pin 15 in the compressed position are constituted by one connecting / holding tool 18. The connecting operation of the two case pieces 13 and 14 and the operation of holding the compression pin 15 at the compression position of the elastic foam W can be easily performed with one touch. Further, the structure of the connecting means and the holding means can be simplified, the number of parts can be reduced, the manufacturing can be facilitated, and the cost can be reduced.

  (6) In the above embodiment, since the tool insertion holes 15a are provided in the compression pins 15 respectively, it is not necessary to confirm the orientation of the storage jig 11 when drilling the elastic foam W. Drilling work can be performed quickly and appropriately. Further, after the tool T is inserted from one tool insertion hole 15a and the insertion hole Wh is formed in the elastic foam W, air is injected from the other tool insertion hole 15a and the chips adhering to the insertion hole Wh. Can also be cleaned.

In addition, you may change the said embodiment as follows.
As shown in FIG. 16, with one compression pin 15, one end portion of the first and second case pieces 13 and 14 is closed by bottom portions 13f and 14f serving as closing portions, and both bottom portions 13f and 14f are joined. Round grooves 13g and 14g may be formed on the surface, and the insertion hole 45 of the drilling tool T may be formed by both grooves.

  In this embodiment, the structure can be simplified by providing both holding mold 25, cylinder 28, pressing pin 30, both holding mold 41, second position switching mechanism K2 and the like of the compression apparatus shown in FIG. .

  As shown in FIG. 17, the housing case 12 is integrally formed, cylindrical small-diameter cylindrical portions 12b are formed at both ends thereof, and an annular locking projection 12c is formed on the outer peripheral surface of the small-diameter cylindrical portion 12b. Then, the positioning holes 12 d may be formed at two locations on the outer peripheral surface of the housing case 12.

  In this embodiment, since the housing case 12 is not divided, the suction cup 35 provided in the upper case holding mold 34 of the compression device shown in FIG. 4 can be omitted, and the compression operation of the elastic foam W can be simplified. .

  As shown in FIG. 18, a bottom portion 12e as a closing portion is integrally formed at one end portion of the housing case 12 of FIG. 17, the one end of the housing chamber 12a is closed, and the drilling tool T is placed at the center of the bottom portion 12e. The insertion hole 12f may be formed.

  In this embodiment, since the housing case 12 is not divided, the suction cup 35 provided in the upper case holding mold 34 of the compression device shown in FIG. 4 can be omitted, and the same as in the other embodiment shown in FIG. In addition, the structure of the compression device can be simplified.

  As shown in FIG. 19, the storage case 12 is formed in a quadrangular prism shape, and the V-shaped square grooves 13h and 14h are formed in the first and second case pieces 13 and 14, whereby the storage chamber 12a of the storage case 12 is formed. May be formed in a square cylinder shape, and the compression pin 15 may be formed in a quadrangular prism shape. In this case, the round grooves 23a and 34a of both case holding molds 23 and 34 shown in FIG. 7 are concave grooves, the round grooves 25a and 41a of both foam holding molds 25 and 41 are V grooves, and the pressing pin 30 is It is changed to a square pillar shape.

  In the above embodiment, after the insertion hole Wh is formed in the rectangular columnar elastic foam W, the shaft is bonded to the insertion hole Wh using a hot melt adhesive, and the elastic foam W is rotated together with the shaft. The outer peripheral surface of the elastic foam W is machined from a square tube shape to a cylindrical shape.

  -Although not shown in figure, the said connection and holding tool 18 may be comprised by two parts, a connection tool and a holding tool. In this other embodiment, in the compression process of the elastic foam W shown in FIG. 8, the storage case 12 is placed on the lower case holding mold 23 with the elastic foam W set in the storage chamber 12 a of the storage case 12. Therefore, the step of sucking the second case piece 14 and the step of moving the second case piece 14 to the retracted position shown in FIG. 9 are not necessary.

A locking mechanism may be provided at the open end of the connection / holding tool 18 to hold the connection / holding tool 18 in a state of being fitted to the first and second case pieces 13, 14.
-You may connect the said 1st and 2nd case pieces 13 and 14 by a hinge mechanism.

  -The storage case 12 may be changed to a rectangular tube shape or a polygonal tube shape instead of the cylindrical shape.

The center part longitudinal cross-sectional view which shows one Embodiment which actualized the accommodation jig | tool of this invention. FIG. 1 is an enlarged sectional view taken along line 1-1 of FIG. FIG. 2 is an exploded perspective view of the housing jig of FIG. 1. The front sectional view which shows the compression apparatus for compressing an elastic foam and accommodating in a storage jig. The top view of a compression apparatus. The right view of a compression apparatus. The perspective view of a compression apparatus. The front sectional view explaining the compression operation of an elastic foam. The front sectional view explaining the compression operation of an elastic foam. The front sectional view explaining the compression operation of an elastic foam. The front sectional view explaining the compression operation of an elastic foam. The front sectional view explaining the compression operation of an elastic foam. The front sectional view explaining the compression operation of an elastic foam. The front sectional view explaining the compression operation of an elastic foam. The longitudinal cross-sectional view of a storage jig. The center part longitudinal cross-sectional view of the accommodation jig | tool which shows another embodiment of this invention. The center part longitudinal cross-sectional view of the accommodation jig | tool which shows another embodiment of this invention. The center part longitudinal cross-sectional view of the accommodation jig | tool which shows another embodiment of this invention. The cross-sectional view of the accommodation jig which shows another embodiment of this invention. The perspective view of the roller raw material used for a copying machine. The perspective view of the roller used for a copying machine.

Explanation of symbols

T ... tool, W ... elastic foam, 12 ... accommodating case, 12a ... accommodating chamber, 13, 14 ... case piece, 13c, 14c ... small-diameter half-cylinder part, 13d, 14d ... locking protrusion, 15 ... compression pin, 15a ... Tool insertion hole, 15b ... Small diameter part, 15c ... Step part, 18 ... Connection / holding tool, 18a ... Connection protrusion, 18b ... Holding protrusion.

Claims (5)

A storage case capable of storing an elastic foam in a compressed state and having a storage chamber open at both ends;
Two compression pins inserted into the storage chamber and used for the compression operation of the elastic foam;
Two holding means mounted respectively between the housing case and both compression pins, for holding both compression pins in the compression position of the elastic foam;
An elastic foam for use in a compression / drilling apparatus, comprising a tool insertion hole into which a drilling tool can be inserted into a compressed elastic foam formed on at least one of the compression pins. Storage jig. A storage case having a storage chamber capable of storing the elastic foam in a compressed state and having one end closed and the other end opened;
One compression pin inserted into the storage chamber and used for the workpiece compression operation;
A holding means mounted between the housing case and the compression pin, for holding the compression pin in a compression position of the elastic foam;
A compression / drilling device comprising a tool insertion hole for inserting a drilling tool into the compressed elastic foam formed in at least one of the compression pin or the closed portion at one end of the storage chamber Elastic foam housing jig used in 3. The storage case according to claim 1, wherein the storage case is divided into two case pieces along a plane passing through the central axis of the storage chamber, and both case pieces are configured to be connectable by connecting means. An elastic foam housing jig used in a compression / piercing device. 4. An elastic foam housing jig for use in a compression / piercing device according to claim 3, wherein the connecting means for both case pieces and the holding means for the compression pin are formed by a single connecting / holding tool. In Claim 4, a small-diameter half-cylinder part is formed in both ends of both said case pieces, respectively, and locking protrusions are provided in the circumferential direction on the outer peripheral surface near the tip of each half-cylinder part. One end portion is provided with a small-diameter portion and a step portion, and the connecting / holding member holds the small-diameter half tube portion in a state where both the case pieces are in contact with each other and is locked to the locking protrusion. The connecting ridge formed in a concave shape as described above, and the holding ridge formed in a concave shape so as to be engaged with the small diameter portion of the compression pin to lock the stepped portion. A storage jig for elastic foam used in compression / piercing devices.

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