JP2005193320A - Synthetic resin working device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a synthetic resin processing device and its method capable of performing die-cutting work on a fragile synthetic resin as a worked object which is easily broken such as acrylic, in a single process. <P>SOLUTION: This device has a lower mold 20 having a die 30 with a cut outer blade 35, and an upper mold 40 having a stripper 50 with a cut inner blade 55 and a blanking punch 60, the cut outer blade 35 of the die 30 of the lower mold 20 is located along the die-cutting direction at its inner edge side 35a and provided with an inclined face 35b at its outer edge side, the cut inner blade 55 of the stripper 50 of the upper mold 40 is located along the die-cutting direction at its inner edge side and provided with an inclined face at its outer edge side, the blanking punch 60 is fitted to the inner edge of the cut inner blade 55 of the stripper 50 of the upper mold 50 in a state that it can be come in and out, and the cut inner blade 55 and the cut outer blade 35 have a clearance α of a degree to be cracked and fractured when they eat into the synthetic resin. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a synthetic resin processing apparatus and a processing method for punching a fragile synthetic resin, such as acrylic, which is easily broken.

As a conventional technique, for example, there is a technique shown in Patent Document 1.
That is, in Japanese Patent Application Laid-Open No. 2003-200451 of Patent Document 1, a mixture of a crystalline plastic material, an amorphous plastic material, and a coupling agent is extruded, hot-rolled, cold-rolled, wound, punched Thus, a technique for processing is disclosed.

JP 2003-200451 A

  However, in such a conventional technique, since a plurality of steps are required as a processing target by mixing a plurality of materials, the facilities are complicated, the cost is increased, and acrylic or the like is easily broken. There was a problem that the synthetic resin could not be directly punched.

  The present invention has been made by paying attention to such problems of the conventional technology, so that a fragile synthetic resin such as acrylic can be punched and processed in a single process. An object of the present invention is to provide a processing apparatus and a processing method for a synthetic resin.

  The gist of the present invention for achieving the object lies in the inventions of the following items.

[1] A synthetic resin processing apparatus (10) for punching a fragile synthetic resin that is easily broken such as acrylic as a processing target (W),
Lower die (20) with die (30) with cut outer blade (35), stripper (50) with cut inner blade (55), and upper die (40) with punching punch (60) And
The cut outer blade (35) of the die (30) of the lower mold (20) has an inner edge side (35a) along the punching direction and an outer edge side formed with an inclined surface (35b).
The upper cutting edge (55) of the stripper (50) of the upper mold (40) has an inner edge side (55a) along the punching direction and an outer edge side formed with an inclined surface (55b).
The punching punch (60) is fitted to the inner edge of the cut inner blade (55) of the stripper (50) of the upper die (40) and is arranged so as to be able to appear and retract.
The synthetic resin processing apparatus, wherein the cut inner blade (55) and the cut outer blade (35) are set to a clearance (α) that causes cracking and breaking when the synthetic resin cuts into the synthetic resin. (10).

[2] A synthetic resin processing apparatus (10) for punching a fragile synthetic resin that is easily broken such as acrylic as a processing target (W),
A lower die (20) having a die (30) with a cut outer blade (35), an upper die (40) having a stripper (50) and a punching punch (60) with a cut inner blade (65); Have
The cut outer blade (35) of the die (30) of the lower mold (20) has an inner edge side (35a) along the punching direction and an outer edge side formed with an inclined surface (35b).
The cut inner blade (65) of the punch (60) of the upper die (40) has an outer edge side (65a) along the punching direction and an inner edge side formed with an inclined surface (65b),
The synthetic resin processing device characterized in that the cut inner blade (65) and the cut outer blade (35) are set to a clearance (α) that causes cracking and breaking when the synthetic resin cuts into the synthetic resin. (10).

[3] A synthetic resin processing apparatus (10) for punching a fragile synthetic resin that is easily broken such as acrylic as a processing target (W),
A lower die (20) having a die (30) with a cut outer blade (35), an upper die (40) having a stripper (50) and a punching punch (60);
The cut outer blade (35) of the die (30) of the lower mold (20) has an inner edge side (35a) along the punching direction and an outer edge side formed with an inclined surface (35b).
The outer edge of the punching punch (60) and the cut outer blade (35) are set to have a clearance (α) that causes cracking and breaking when the synthetic resin bites into the synthetic resin. Processing device (10).

  [4] Item 1, 2 or 3 characterized in that a cushion elastic body (31) for receiving a workpiece (W) is disposed on the outer periphery of a die (30) with a cut outer blade (35). Synthetic resin processing equipment (10).

  [5] Item 1, 2 or 3 characterized in that a shaving blade (15) for cutting the outer periphery of the punched part is disposed in a path along which the punched part is moved by the punching punch (60). Synthetic resin processing apparatus (10).

  [6] The synthetic resin processing device (10) according to [1], [2], [3], or [5], wherein the processing target (W) of the synthetic resin to be punched is heated to an extent that does not cause distortion.

[7] A synthetic resin that is punched with a fragile synthetic resin, such as acrylic, that is easily broken, between the cut outer blade (35) and the cut inner blade (55) or the punching punch (60). In the processing method,
A synthetic resin processing method, characterized in that the clearance (α) between the cut outer blade (35) and the cut inner blade (55) or the punching punch (60) is set to such an extent that the crack progresses and breaks.

The present invention operates as follows.
According to the synthetic resin processing apparatus (10) according to the present invention, a fragile synthetic resin that is easily broken such as acrylic can be punched and processed in a single process.

  The lower die (20) is provided with a die (30) with a cut outer blade (35), and the upper die (40) is provided with a stripper (50) with a cut inner blade (55) and a punching punch (60). In this case, the stripper (50) and the punching punch (60) are raised, the synthetic resin to be processed (W) is set on the die (30) of the lower die (20), and then the upper Lower mold (40).

  Then, the die (30) of the lower die (20) has a cut outer blade (35) having an inner edge side along the punching direction and an inclined surface formed on the outer edge side, and a stripper (50) of the upper die (40). The synthetic resin to be processed (W) is sandwiched between the inner edge side along the punching direction and the cut inner blade (55) formed with an inclined surface on the outer edge side.

  The inner edge side (35a) along the punching direction of the cut outer blade (35) of the die (30) of the lower mold (20) and the inclined surface of the cut inner blade (55) of the stripper (50) of the upper mold (40). The outer edge side on which (55b) is formed bites while facing the synthetic resin to be processed (W). Next, when the punching punch (60) fitted to the inner edge of the cut inner blade (55) of the stripper (50) of the upper die (40) is lowered, it hits against the synthetic resin to be processed (W) and pushed down. Since the cut outer blade (35) and the cut inner blade (55) are set to have a clearance (α) to the extent that the crack progresses and breaks, the cut outer blade (35) side and the cut inner blade (55) side crack. Advances and is punched, and the blank (W1) and the synthetic resin substrate (W2) to be processed (W) are broken.

  When the punching punch (60) is further lowered, the blank (W1) is transported downward and sent out. The blank (W1) can be handled as a product, or a synthetic resin substrate (W2) in which a hole of the blank (W1) is punched can be used as a product. Then, after raising the punching punch (60), the synthetic resin of the next processing object (W) is set, and the above steps are repeated.

  The lower die (20) is provided with a die (30) with a cut outer blade (35), and the upper die (40) is provided with a stripper (50) and a punching punch (60) with a cut inner blade (55). Then, the stripper (50) and the punching punch (60) are raised, the synthetic resin to be processed (W) is set on the die (30) of the lower mold (20), and then the upper mold ( 40) the stripper (50) and the punching punch (60) are lowered.

  Then, the outer die (30) of the lower die (20) has an inner edge side (35a) along the punching direction and a cut outer blade (35) formed with an inclined surface (35b) on the outer edge side, and an upper die (40). Of the punching punch (60) of the workpiece (W) between the outer edge side (65a) along the punching direction and the cut inner blade (65) formed with the inclined surface (65b) on the inner edge side. The resin is sandwiched.

  The inner edge side (35a) along the punching direction of the cut outer blade (35) of the die (30) of the lower die (20) and the cut inner blade (65) of the punch (60) of the upper die (40). The inner edge side (65a) along the punching direction bites in with the synthetic resin to be processed (W) in between. Next, when the punching punch (60) is further lowered, the synthetic resin to be processed (W) is pushed down, and the clearance (α) is such that the cut outer blade (35) and the cut inner blade (65) crack and break. Since it is set, the crack advances from the cut outer blade (35) side and the cut inner blade (65) side, and there is a gap between the blank (W1) to be punched and the synthetic resin substrate (W2) to be processed (W). Break.

  When the punching punch (60) is further lowered, the blank (W1) is transported downward and sent out. The blank (W1) can be handled as a product, or a synthetic resin substrate (W2) in which a hole of the blank (W1) is punched can be used as a product. Then, after raising the punching punch (60), the synthetic resin of the next processing object (W) is set, and the above steps are repeated.

  When the lower die (20) includes the die (30) with the cut outer blade (35) and the upper die (40) includes the stripper (50) and the punching punch (60), the stripper (50) and The punching punch (60) is raised, the synthetic resin to be processed (W) is set on the die (30) of the lower mold (20), and then the stripper (50) of the upper mold (40) and The punching punch (60) is lowered.

  Then, the cut outer blade (35) formed by forming the inclined surface on the outer edge side along the punching direction of the die (30) of the lower die (20) bites into the synthetic resin to be processed (W). When the punching punch (60) is further lowered, the synthetic resin to be processed (W) is pushed down, and the outer edge (66) of the punching punch (60) and the cut outer blade (35) have a clearance to the extent that cracking progresses and breaks ( Since it is set to α), the crack progresses from the cut outer blade (35) side, and the blank (W1) to be punched and the synthetic resin substrate (W2) to be processed (W) break.

  When the punching punch (60) is further lowered, the blank (W1) is transported downward and sent out. The blank (W1) can be handled as a product, or a synthetic resin substrate (W2) in which a hole of the blank (W1) is punched can be used as a product. Then, after raising the punching punch (60), the synthetic resin of the next processing object (W) is set, and the above steps are repeated.

  In the case where the cushion elastic body (31) for receiving the workpiece (W) is disposed on the outer periphery of the die (30) with the cut outer blade (35), when the upper die (40) is raised after processing, The synthetic resin to be processed (W) is lifted, and it becomes easy to set and take out. When the shaving blade (15) is disposed in a path along which the punched part that is the blank (W1) is moved by the punching punch (60), the outer periphery of the punched part is shaved by the shaving blade (15), Finishing is done in conjunction with processing. If the processing target (W) of the synthetic resin to be punched is heated to such a level that distortion does not occur, processing close to vertical can be performed with the clearance (α) being minimized.

  According to the processing apparatus and processing method for synthetic resin according to the present invention, it is possible to punch a fragile synthetic resin that easily breaks due to crack progress fracture, so that the synthetic resin to be processed can be processed in a single step. A synthetic resin processing apparatus and processing method that can be punched and that is quick and cost-effective can be obtained.

  Hereinafter, various preferred embodiments of the present invention will be described with reference to the drawings.

1 to 5 show a first embodiment of the present invention.
As shown in FIG. 1, a synthetic resin processing apparatus 10 for punching a fragile synthetic resin that is easily broken such as acrylic as a processing target W includes a lower mold 20 having a die 30 with a cut outer blade 35, a cut It has a stripper 50 with an inner blade 55 and an upper die 40 having a punching punch 60.

  The lower die 20 has a die 30 with a cut outer blade 35 installed on a die holder 23 having a guide hole 21 formed therein, a cushion elastic body 31 is disposed on the outer periphery of the cut outer blade 35, and a rest block 32 is provided. It consists of As the cushion elastic body 31, sponge rubber having appropriate elasticity is suitable.

  The cut outer blade 35 of the die 30 of the lower mold 20 has an inner edge side 35a along the punching direction, and an inclined surface 35b is formed on the outer edge side.

  The upper die 40 is formed by mounting each member on a punch holder 41 guided by a guide post 11 and supported so as to be movable up and down. A punch plate 42 is attached to the punch holder 41, and a stripper 50 with a cut inner blade 55 is supported on the punch plate 42 by a stripper bolt 43 and a holding compression spring 44.

  The cutting inner blade 55 of the stripper 50 of the upper die 40 is formed by forming the inner edge side 55a along the punching direction and the inclined surface 55b on the outer edge side, and the punching punch 60 is the cutting inner blade of the stripper 50 of the upper die 40. It fits in the inner edge of 55, and is arrange | positioned so that it can protrude / project relatively. A cushion elastic body 51 is disposed on the outer periphery of the cut inner blade 55. As shown in FIG. 2, the cut inner blade 55 of the stripper 50 and the cut outer blade 35 of the die 30 are set to a clearance α that is such that when the synthetic resin of the workpiece W is cut, the crack progresses and breaks.

  The clearance α is about 5 to 20% of the punched plate thickness, and is set to an appropriate value according to the characteristics of the workpiece W. Further, the biting amount δ of the cut outer blade 35 and the cut inner blade 55 is about 5 to 20% of the punched plate thickness, and is set to an appropriate value according to the characteristics of the workpiece W.

Next, the operation will be described.
According to the synthetic resin processing apparatus 10, a fragile synthetic resin that is easily broken, such as acrylic, can be punched and processed in a single process as the processing object W.

  As shown in FIG. 3 (1), at the start of machining, the stripper 50 and the punching punch 60 are raised, the synthetic resin of the workpiece W is set on the die 30 of the lower mold 20, and then the upper mold 40 is lowered.

  Then, the outer edge 35a of the die 30 of the lower mold 20 is formed along the punching direction, and the outer edge side 55a of the stripper 50 of the upper mold 40 is formed in the punching direction. The synthetic resin of the workpiece W is sandwiched between the cut inner blade 55 formed with the inclined surface 55b on the outer edge side.

  As shown in FIG. 3B, an inner edge side 35a along the punching direction of the cut outer blade 35 of the die 30 of the lower mold 20 and an inclined surface 55b of the cut inner blade 55 of the stripper 50 of the upper mold 40 are formed. The outer edge side bites into the processing object W with the synthetic resin in between. This biting force is due to the compressive force of the holding compression spring 44. When the bite is bitten by a predetermined biting amount δ, the stripper 50 hits the rest block 32 and the progress of cracking of the workpiece W stops.

  When the upper die 40 is further lowered, as shown in FIG. 3 (3), the punching punch 60 fitted in and retractable on the inner edge of the cut inner blade 55 of the stripper 50 of the upper die 40 is lowered and protrudes. Since the cut outer blade 35 and the cut inner blade 55 are set to a clearance α that causes the crack to proceed and break when pushed down against the synthetic resin of W, cracking proceeds from the cut outer blade 35 side and the cut inner blade 55 side. The blank W1 and the synthetic resin substrate W2 to be processed W are broken.

  When the punching punch 60 is further lowered, the blank W1 is transported downward and sent out. The blank W1 can be handled as a product, or a synthetic resin substrate W2 in which a hole of the blank W1 is punched can be used as a product. Thereafter, after the punching punch 60 is raised, the synthetic resin of the next workpiece W is set, and the above steps are repeated. When the punching punch 60 is lifted, the synthetic resin substrate W2 is lifted by the cushion elastic body 31, which facilitates conveyance and setting.

  As shown in FIG. 4, the edge of the blank W1 is formed with a rupture portion a3 between the upper and lower cut portions a1 and a2, the cut portions a1 and a2 are free of burrs, the front and back are not disturbed, and cracked.・ There are no cracks. Similarly, as shown in FIG. 5, the opening edges b1 and b2 of the hole b of the synthetic resin substrate W2 are free of burrs, the front and back are not disturbed, and no cracks or cracks are generated.

FIG. 6 shows a second embodiment of the present invention.
In this embodiment, the punching punch 60 is provided with a cut inner blade 65.
In addition, the same code | symbol is attached | subjected to the site | part of the same kind as 1st Embodiment, and the overlapping description is abbreviate | omitted.

  The processing apparatus 10 according to the second embodiment includes a lower die 20 having a die 30 with a cut outer blade 35, and an upper die 40 having a stripper 50 and a punching punch 60 with a cut inner blade 65. Have.

  The cut outer blade 35 of the die 30 of the lower die 20 has an inner edge side 35a along the punching direction and an outer edge side formed with an inclined surface 35b. The cut inner blade 65 of the punch punch 60 of the upper die 40 is The outer edge side 65a is formed along the punching direction, and the inner edge side is formed with an inclined surface 65b. The cut inner blade 65 and the cut outer blade 35 have a clearance α enough to cause breakage and breakage when they bite into the synthetic resin. Is set.

Next, the operation of the second embodiment will be described.
At the start of processing, as shown in FIG. 6 (1), the stripper 50 and the punching punch 60 are raised, the synthetic resin of the processing target W is set on the die 30 of the lower mold 20, and then the upper The stripper 50 and the punching punch 60 of the mold 40 are lowered.

  Then, as shown in FIG. 6 (2), the die 30 of the lower mold 20 has a cut outer blade 35 having an inner edge side 35 a along the punching direction and an inclined surface 35 b formed on the outer edge side, and the upper mold 40 is hit. The synthetic resin of the workpiece W is sandwiched between the punching punch 60 and the cut inner blade 65 formed with the inclined surface 65b on the inner edge side along the outer edge side 65a along the punching direction.

  The inner edge side 35a along the punching direction of the cut outer blade 35 of the die 30 of the lower die 20 and the outer edge side 65a along the punching direction of the cut inner blade 65 of the punching punch 60 of the upper die 40 are combined with the workpiece W. Invade with the resin in between. Next, as shown in FIG. 6 (3), when the punching punch 60 is further lowered, the synthetic resin of the workpiece W is pushed down, and the clearance α is such that the cut outer blade 35 and the cut inner blade 65 are cracked and fractured. Since it is set, the crack advances from the cut outer blade 35 side and the cut inner blade 65 side, and the blank W1 to be punched and the synthetic resin substrate W2 to be processed W break.

  When the punching punch 60 is further lowered, the blank W1 is transported downward and sent out. The blank W1 can be handled as a product, or a synthetic resin substrate W2 in which a hole of the blank W1 is punched can be used as a product. Thereafter, after the punching punch 60 is raised, the synthetic resin of the next workpiece W is set, and the above steps are repeated.

  As shown in FIG. 7, the edge of the blank W1 is formed with a rupture portion a3 between the upper and lower cut portions a1 and a2, the cut portions a1 and a2 are free of burrs, the front and back are not disturbed, and cracked.・ There are no cracks. Similarly, as shown in FIG. 8, there are no burrs on the opening edges b1 and b2 of the hole b of the synthetic resin substrate W2, there is no disorder of the contours on the back and front, and no cracks or cracks are generated.

FIG. 9 shows a third embodiment of the present invention.
In the present embodiment, the workpiece W is punched by the cut outer blade 35 of the die 30 and the punching punch 60 without a blade.
In addition, the same code | symbol is attached | subjected to the site | part of the same kind as 1st, 2nd embodiment, and the overlapping description is abbreviate | omitted.
The processing apparatus 10 according to the third embodiment includes a lower die 20 having a die 30 with a cut outer blade 35, an upper die 40 having a stripper 50 and a punching punch 60 without a blade. It consists of

  The cut outer blade 35 of the die 30 of the lower mold 20 has an inner edge side 35a along the punching direction and an outer edge side formed with an inclined surface 35b. The outer edge 66 of the punching punch 60 and the cut outer blade 35 are made of synthetic resin. The clearance α is set such that the crack progresses and breaks when it bites in.

Next, the operation of the third embodiment will be described.
At the start of machining, as shown in FIG. 9 (1), the stripper 50 and the punching punch 60 are raised, the synthetic resin of the workpiece W is set on the die 30 of the lower mold 20, and then the upper The stripper 50 and the punching punch 60 of the mold 40 are lowered.

  Then, as shown in FIG. 9 (2), the cut outer blade 35 in which the inner edge side 35a of the die 30 of the lower mold 20 is formed along the punching direction and the inclined surface 35b is formed on the outer edge side is the synthetic resin of the workpiece W. Bite into. When the punching punch 60 is further lowered, the synthetic resin of the workpiece W is pushed down, and the outer edge 66 of the punching punch 60 and the cut outer blade 35 are set to have a clearance α that allows the crack to progress and break. Cracks proceed from the side 35, and the blank W1 to be punched and the synthetic resin substrate W2 to be processed W are broken.

  As shown in FIG. 9 (3), when the punching punch 60 is further lowered, the blank W1 is conveyed downward and sent out. The blank W1 can be handled as a product, or a synthetic resin substrate W2 in which a hole of the blank W1 is punched can be used as a product. Thereafter, after the punching punch 60 is raised, the synthetic resin of the next workpiece W is set, and the above steps are repeated.

  As shown in FIG. 10, the edge of the blank W1 is formed with a rupture portion a3 between the upper and lower cut portions a1 and a2, and the cut portion a1 has a cutting characteristic due to the processing characteristics of the third embodiment. Slight burrs are formed, but this is not a problem for practical use. There is no burrs in the cut portion a2, there is no disturbance in the contours on both sides, and no cracks or cracks are generated. Similarly, the opening edges b1 and b2 of the hole b of the synthetic resin substrate W2 are free of burrs, the front and back are not disturbed, and no cracks or cracks are generated.

FIG. 11 shows a fourth embodiment of the present invention.
In the present embodiment, the shaving blade 15 is provided in the second embodiment. Needless to say, the shaving blade 15 may be provided in the first and third embodiments.
In addition, the same code | symbol is attached | subjected to the site | part same as the said embodiment, and the overlapping description is abbreviate | omitted.
The processing apparatus 10 of the fourth embodiment has the same basic configuration as that of the second embodiment, but the blank W1 is on the path along which the blank W1 that is a punched part is moved by the punching punch 60. A shaving blade 15 is disposed to cut the outer periphery. On the outer periphery of the shaving blade 15, a cutting waste receiving portion 16 is provided.

  In the fourth embodiment, at the start of machining, as shown in FIG. 11 (1), the stripper 50 and the punching punch 60 are raised and the workpiece W is synthesized on the die 30 of the lower mold 20. After the resin is set, the stripper 50 and the punching punch 60 of the upper mold 40 are lowered.

  Then, as shown in FIG. 11 (2), the die 30 of the lower mold 20 has a cut outer blade 35 having an inner edge side 35a along the punching direction and an inclined surface 35b formed on the outer edge side. The synthetic resin of the workpiece W is sandwiched between the punching punch 60 and the cut inner blade 65 formed with the inclined surface 65b on the inner edge side along the outer edge side 65a along the punching direction.

  The inner edge side 35a along the punching direction of the cut outer blade 35 of the die 30 of the lower die 20 and the outer edge side 65a along the punching direction of the cut inner blade 65 of the punching punch 60 of the upper die 40 are combined with the workpiece W. Invade with the resin in between. Next, as shown in FIG. 11 (3), when the punching punch 60 is further lowered, the synthetic resin of the workpiece W is pushed down, and the clearance α is such that the cut outer blade 35 and the cut inner blade 65 are cracked and fractured. Since it is set, the crack advances from the cut outer blade 35 side and the cut inner blade 65 side, and the blank W1 to be punched and the synthetic resin substrate W2 to be processed W break.

  As shown in FIG. 11 (4), when the punching punch 60 is further lowered, the blank W1 is carried downward. When the blank W1 passes the shaving blade 15 along the moving path, the outer periphery of the punched part W1 is shaved by the shaving blade 15 and finished in conjunction with the machining. In the fourth embodiment, as shown in FIG. 12, since the outer periphery of the blank W1 is shaved, the upper and lower corners a3 and a4 have no burrs, and the space between the corners a3 and a4 is cut vertically. It has become a beautiful product. There is no outline disturbance on both sides, and no cracks or cracks occur.

  In addition, you may make it heat and process the process target W of the synthetic resin to punch-out to such an extent that distortion does not arise. Then, since the clearance α can be minimized, as shown in FIG. 13, there are no burrs in the upper and lower corners a3 and a4, and a clean product in which the space between the corners a3 and a4 is cut substantially vertically. Become.

It is explanatory sectional drawing which shows the synthetic resin processing apparatus which concerns on the 1st Embodiment of this invention. It is explanatory sectional drawing which shows the processing state of the synthetic resin processing apparatus which concerns on the 1st Embodiment of this invention. It is operation | movement explanatory sectional drawing of the processing apparatus of the synthetic resin which concerns on the 1st Embodiment of this invention. It is explanatory drawing of the blank processed with the processing apparatus of the synthetic resin which concerns on the 1st Embodiment of this invention. It is explanatory drawing of the synthetic resin base | substrate processed with the synthetic resin processing apparatus which concerns on the 1st Embodiment of this invention. It is explanatory sectional drawing which shows the processing apparatus of the synthetic resin which concerns on the 2nd Embodiment of this invention. It is explanatory drawing of the blank processed with the processing apparatus of the synthetic resin which concerns on the 2nd Embodiment of this invention. It is explanatory drawing of the synthetic resin base | substrate processed with the synthetic resin processing apparatus which concerns on the 2nd Embodiment of this invention. It is explanatory sectional drawing which shows the processing apparatus of the synthetic resin which concerns on the 3rd Embodiment of this invention. It is explanatory drawing of the blank and the synthetic resin base | substrate which were processed with the synthetic resin processing apparatus which concerns on the 3rd Embodiment of this invention. It is explanatory sectional drawing which shows the processing apparatus of the synthetic resin which concerns on the 4th Embodiment of this invention. It is explanatory drawing of the blank processed with the synthetic resin processing apparatus which concerns on the 4th Embodiment of this invention. It is explanatory drawing of the blank processed with the synthetic resin processing apparatus which concerns on other embodiment of this invention.

Explanation of symbols

W ... Processing target W1 ... Blank W2 ... Synthetic resin substrate α ... Clear δ ... Biting amount 10 ... Processing device 11 ... Guide post 15 ... Shaving blade 16 ... Cutting waste receiving part 20 ... Lower die 21 ... Conducting hole 23 ... Die holder 30 ... Die 31 ... Cushion elastic body 32 ... Rest block 35 ... Cut outer blade 35a ... Inner edge side 35b ... Inclined surface 40 ... Upper mold 41 ... Punch holder 42 ... Punch plate 43 ... Stripper bolt 44 ... Holding compression spring 50 ... Stripper 51 ... Cushion Elastic body 55 ... Cut inner blade 55a ... Inner edge side 55b ... Inclined surface 60 ... Punching punch 65 ... Cut inner blade 66 ... Outer edge

Claims (7)

A synthetic resin processing apparatus that punches and processes fragile synthetic resins that are easily broken such as acrylic,
A lower die having a die with a cut outer blade, a stripper with a cut inner blade, and an upper die having a punching punch,
The lower die cut outer blade, the inner edge side is along the punching direction, the outer edge side is formed with an inclined surface,
The upper inner stripper cut inner blade has an inner edge side along the punching direction and an outer edge side formed with an inclined surface,
The punching punch is arranged so as to be able to protrude and retract by fitting to the inner edge of the cut inner blade of the upper mold stripper,
The synthetic resin processing apparatus, wherein the cut inner blade and the cut outer blade are set to have a clearance that causes cracking and breaking when the synthetic resin cuts into the synthetic resin. A synthetic resin processing apparatus that punches and processes fragile synthetic resins that are easily broken such as acrylic,
A lower die having a die with a cut outer blade, an upper die having a stripper and a punch with a cut inner blade,
The lower die cut outer blade, the inner edge side is along the punching direction, the outer edge side is formed with an inclined surface,
The cutting inner blade of the upper punch, the outer edge side is along the punching direction, the inner edge side is formed with an inclined surface,
The synthetic resin processing apparatus, wherein the cut inner blade and the cut outer blade are set to have a clearance that causes cracking and breaking when the synthetic resin cuts into the synthetic resin. A synthetic resin processing apparatus that punches and processes fragile synthetic resins that are easily broken such as acrylic,
A lower die having a die with a cut outer blade, an upper die having a stripper and a punch,
The lower die cut outer blade, the inner edge side is along the punching direction, the outer edge side is formed with an inclined surface,
The synthetic resin processing apparatus, wherein an outer edge of the punching punch and the cut outer blade are set to have a clearance that causes cracking and breaking when the synthetic resin bites into the synthetic resin.   4. The synthetic resin processing apparatus according to claim 1, wherein a cushion elastic body for receiving a processing object is disposed on an outer periphery of a die having a cut outer blade.   4. The synthetic resin processing apparatus according to claim 1, wherein a shaving blade for cutting an outer periphery of the punched part is disposed in a path along which the punched part is moved by the punching punch.   6. The synthetic resin processing apparatus according to claim 1, 2, 3, or 5, wherein the processing target of the synthetic resin to be punched is heated to a level that does not cause distortion. In the synthetic resin processing method of punching fragile synthetic resin, such as acrylic, which is easy to break, between the cut outer blade and the cut inner blade or punching punch,
A synthetic resin processing method characterized in that the clearance between a cut outer blade and a cut inner blade or a punching punch is set to such an extent that the crack progresses and breaks.

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