JP2021074813A - Trimming device - Google Patents

Abstract

To provide a trimming device capable of easily fixing an upper mold to a lower surface side of an upper base member.SOLUTION: Fixing means 2 for detachably fixing an upper mold 30 to a lower surface 20b side of an upper base member 20, is clamp devices 40 and 80 that have air cylinders 41 and 81, are provided on the upper base member 20, and are vertically expanded/contracted by actuation of the air cylinders 41 and 81. The clamp devices 40 and 80 have clamp portions 43 and 83 provided at tip end portions of piston rods 42 and 82 of the air cylinders 41 and 81. A part of peripheral edge portions 31 and 32 of the upper mold 30 disposed between the clamp portion 43 and a lower surface 20b of the upper base member 20, is pressed upward with the clamp portions 43 and 83 by the actuation of the air cylinders 41 and 81, thereby sandwiching and fixing a part of the peripheral edge portions 31 and 32 of the upper mold 30 between the clamp portion 43 and the lower surface 20b of the upper base member 20.SELECTED DRAWING: Figure 3

Description

The present invention relates to a trimming device.

Patent Document 1 discloses a trimming device for trimming a molded sheet. This trimming device includes an upper table, an upper base member attached to the lower surface of the upper table, an upper mold attached to the lower surface side of the upper base member, a lower table, and a lower base attached to the upper surface of the lower table. It includes a member and a lower mold attached to the upper surface of the lower base member. In this trimming device, the lower mold is provided with a cutting blade (for example, a Thomson blade) for trimming.

Japanese Unexamined Patent Publication No. 2016-198994

In the trimming device of Patent Document 1, the upper mold is detachably fixed to the lower surface side of the upper base member by using bolts and nuts. Therefore, when replacing the upper mold (that is, removing the used upper mold and attaching a new upper mold to the lower surface side of the upper base member), first, the bolt fixing the upper mold is performed. And remove the nut and remove the upper mold that was used. Then, using bolts and nuts, a new upper mold is attached to the lower surface side of the upper base member.

However, in the trimming apparatus of Patent Document 1, when a new upper mold is attached to the lower surface side of the upper base member, the operator attaches the new upper mold directly to the lower surface of the upper base member or via a metal plate. It is necessary to attach the new upper mold to the lower surface side of the upper base member using multiple bolts and nuts while maintaining the indirect contact state (that is, supporting the new upper mold). was there. Such installation work was troublesome for the operator.

The present invention has been made in view of the present situation, and an object of the present invention is to provide a trimming device capable of easily fixing the upper mold to the lower surface side of the upper base member.

One aspect of the present invention is a trimming device for trimming a molded sheet, which is attached to and detached from the upper table, an upper base member attached to the lower surface of the upper table, and the lower surface side of the upper base member by fixing means. The upper mold and the lower mold are provided with an upper mold fixed to, a lower table, a lower base member attached to the upper surface of the lower table, and a lower mold attached to the upper surface of the lower base member. In a trimming device having a cutting edge for performing the trimming, the fixing means is a clamp device having an air cylinder, which is provided on the upper base member and is operated in the vertical direction by the operation of the air cylinder. The clamp device is a clamp device that expands and contracts in a manner, and the clamp device has a clamp portion that is provided at the tip of a piston rod of the air cylinder and extends in the radial direction of the piston rod, and the clamp portion and the upper base member. A part of the peripheral edge portion of the upper mold arranged between the lower surface and the lower surface of the upper base member is pressed upward by the clamp portion by the operation of the air cylinder, thereby causing the clamp portion and the lower surface of the upper base member. It is a trimming device that clamps a part of the peripheral edge portion of the upper mold between the two and fixes the upper mold to the upper base member.

In the trimming device described above, either the upper die or the lower die has a cutting edge (for example, a Thomson blade) for trimming. In this trimming device, a fixing means for detachably fixing the upper mold to the lower surface side of the upper base member is configured by a clamp device having an air cylinder. This clamp device is provided on the upper base member and expands and contracts in the vertical direction by the operation of the air cylinder. Further, this clamp device is provided at the tip of the piston rod of the air cylinder (in other words, the lower end of the piston rod in the state of being provided on the upper base member), and is provided in the radial direction of the piston rod (in other words, in other words). It has a clamp portion extending in a direction orthogonal to the vertical direction in the state of being provided on the upper base member.

Further, this clamping device shortens the operation of the air cylinder (specifically, the length of the air cylinder) by partially operating the peripheral portion of the upper mold arranged between the clamp portion and the lower surface of the upper base member. The operation of the air cylinder in the direction. In other words, the operation of the air cylinder in the direction of bringing the clamp part closer to the lower surface of the upper base member), the lower surface of the clamp part and the upper base member is pressed upward by the clamp part. A part of the peripheral edge of the upper mold is sandwiched between and fixed, and the upper mold is fixed to the upper base member.
As described above, in the trimming device described above, the upper mold can be easily fixed to the lower surface side of the upper base member.

Further, since the upper mold has a fixed structure as described above, when the upper mold is removed from the upper base member, the air cylinder constituting the clamp device described above operates in a direction of extending the length of the air cylinder (in other words). By doing so, the clamp portion is operated in a direction away from the lower surface of the upper base member), so that the peripheral edge portion of the upper mold is released from the state of being sandwiched and fixed between the clamp portion and the lower surface of the upper base member. can do. As a result, the upper mold can be removed from the upper base member. As described above, in the trimming device described above, the upper mold can be easily removed.

Therefore, in the above-mentioned trimming device, the replacement work of the upper die can be easily performed. That is, the used upper mold can be easily removed from the upper base member, and a new upper mold can be easily attached to the lower surface side of the upper base member.

As the mode in which the upper mold is fixed to the lower surface side of the upper base member, for example, the following two modes can be mentioned. (1) A mode in which the upper surface of the upper mold contacts the lower surface of the upper base member, and the upper mold is fixed to the upper base member. (2) A mode in which another member such as a metal plate is sandwiched between the upper surface of the upper mold and the lower surface of the upper base member, and the upper mold is fixed to the upper base member.

As the aspect of (2), for example, the upper mold is a Thomson mold having a Thomson blade, and "the root portion of the Thomson blade exposed on the upper surface (back surface) of the Thomson mold at the time of trimming (cutting) is formed. The upper surface of the upper mold (Thomson type) and the lower surface of the upper base member are used to prevent a part of the lower surface of the upper base member from being dented (a trace of pressure contact remains) by pressure contacting the lower surface of the upper base member. An embodiment in which the upper mold is fixed to the upper base member together with the protective plate by interposing a metal protective plate between the and the upper mold can be mentioned.

Further, in the trimming device, the upper base member has a rectangular shape in a plan view, and as a peripheral edge portion of the upper base member, in a plan view of the upper base member, the center of the upper base member is sandwiched between them. In the second direction with the center of the upper base member sandwiched between the first peripheral edge portion of the base and the second peripheral edge portion of the base extending in the second direction orthogonal to the first direction and facing the first direction. The upper base member has a third peripheral edge portion of the base and a fourth peripheral edge portion of the base which face each other and extend in the first direction, and the upper mold has a rectangular shape in a plan view. In a plan view of the upper mold in a state of being fixed to, the upper mold first peripheral edge portion and the upper mold second peripheral edge extending in the second direction facing the first direction with the center of the upper mold in between. It has a portion and a third peripheral edge portion of the upper die and a fourth peripheral edge portion of the upper die that extend in the first direction facing the second direction with the center of the upper die sandwiched between them, and has a portion in the first direction. The dimensions are smaller than the dimensions in the second direction, and positioning portions for positioning the positions of the upper mold in the first direction and the second direction with respect to the upper base member are provided on the lower surface of the second peripheral edge portion of the base. The lower surface of the third peripheral edge of the base and the lower surface of the fourth peripheral edge of the base are a pair of guide portions extending in the first direction, which are separated from each other in the second direction and face each other. A guide portion is provided, and the pair of guide portions is a regulating portion that regulates a position of the upper mold in the second direction when the upper mold is attached to the lower surface side of the upper base member. A pair of restricting portions that face the second direction and extend in the first direction, and a support portion that supports the lower surfaces of the upper die third peripheral edge portion and the upper die fourth peripheral edge portion of the upper die. It has a pair of support portions facing the second direction and extending in the first direction, and the clamping device is provided on the first clamping device provided on the first peripheral edge portion of the base and the second peripheral edge portion of the base. It is a second clamping device provided, the first clamping device is provided detachably from the first peripheral edge portion of the base, and the upper mold is attached to the lower surface side of the upper base member. At this time, in a state where the first clamping device is removed from the first peripheral edge portion of the base, the upper mold is passed from the first peripheral edge portion side of the base of the upper base member to the lower side of the first peripheral edge portion of the base. Then, the upper die is oriented so that the first peripheral edge portion of the upper die and the second peripheral edge portion of the upper die face each other in the first direction, and the pair of guide portions from the second peripheral edge portion side of the upper die. The above one By inserting it between the pair of regulating portions and sliding it on the pair of support portions in the first direction, the upper die second peripheral edge portion is formed into the clamp portion and the upper base of the second clamping device. The first position is arranged between the member and the lower surface of the member, and the positions of the upper mold with respect to the upper base member in the first direction and the second direction are positioned at predetermined positions positioned by the positioning portion. The clamp device is installed on the first peripheral edge portion of the base in a state where the upper mold is arranged at the specified position, so that the clamp portion of the first clamp device and the lower surface of the upper base member can be brought into contact with each other. By arranging the upper mold first peripheral edge portion between them and pressing the upper mold first peripheral edge portion upward by the operation of the air cylinder constituting the first clamp device, the clamp portion is formed. The first peripheral edge of the upper die is sandwiched and fixed between the upper die and the lower surface of the upper base member, and the second clamp device is the second clamp in a state where the upper die is arranged at the specified position. By pressing the upper mold second peripheral edge portion upward by the clamp portion by the operation of the air cylinder constituting the device, the upper mold second peripheral edge portion is between the clamp portion and the lower surface of the upper base member. It is preferable to use a trimming device that clamps and fixes the part.

In the above-mentioned trimming device, a positioning portion for positioning the positions of the upper mold in the first direction and the second direction with respect to the upper base member is provided on the lower surface of the second peripheral edge portion of the base. Further, on the lower surface of the third peripheral edge portion of the base and the lower surface of the fourth peripheral edge portion of the base, a pair of guide portions extending in the first direction and facing each other in the second direction are provided. Has been done. The pair of guide portions are regulation portions that regulate the position of the upper mold in the second direction when the upper mold is attached to the lower surface side of the upper base member, and are a pair extending in the first direction facing the second direction. A support portion that supports the lower surface of the upper die third peripheral edge portion and the upper die fourth peripheral edge portion when the upper die is attached to the lower surface side of the upper base member, and faces the second direction. It has a pair of support portions extending in the first direction. The pair of regulating portions (one regulating portion and the other regulating portion) are separated in the second direction with a distance equal to or larger than the dimension of the upper die in the second direction.

Further, in the above-mentioned trimming device, the clamp device is composed of a first clamp device provided on the first peripheral edge portion of the base of the upper base member and a second clamp device provided on the second peripheral edge portion of the base. The first clamp device and the second clamp device may be provided in the trimming device one by one, or may be provided in the trimming device one by one.

In this trimming device, the upper die is attached to the lower surface side of the upper base member so as to pass below the first peripheral edge portion of the base from the first peripheral edge portion side of the base of the upper base member. Specifically, regarding the upper mold, the first peripheral edge portion of the upper mold and the second peripheral edge portion of the upper mold are oriented so as to face each other in the first direction, and a pair of guide portions are regulated from the second peripheral edge portion side of the upper mold. It is inserted between the parts and slid over the pair of support parts in the first direction so that the positions of the upper mold with respect to the upper base member in the first direction and the second direction are positioned by the positioning parts. Place the upper mold.

Since the dimensions of the upper mold in the first direction are smaller than the dimensions in the second direction, the upper mold has the first peripheral edge portion and the upper mold second peripheral edge portion facing each other in the first direction. By sliding the mold over the pair of support portions in the first direction, the slide movement distance of the upper mold can be shortened, and the upper mold can be quickly arranged at the specified position. it can.

However, in such an upper mold mounting structure, the upper mold is passed from the base first peripheral edge side of the upper base member to the lower side of the base first peripheral edge portion, so that the pair of restricting portions of the pair of guide portions is passed. When the first clamp device is provided on the first peripheral edge portion of the base, the first clamp device prevents the upper mold from being inserted between the pair of restricting portions.

On the other hand, in the above-mentioned trimming device, the first clamp device is detachably provided with respect to the first peripheral edge portion of the base.

Further, in the above-mentioned trimming device, when the upper die is attached to the lower surface side of the upper base member, the upper die is attached to the base first of the upper base member in a state where the first clamp device is removed from the first peripheral edge portion of the base. It is attached to the lower surface side of the upper base member so as to pass below the first peripheral edge portion of the base from the peripheral edge portion side. Specifically, regarding the upper mold, the first peripheral edge portion of the upper mold and the second peripheral edge portion of the upper mold are oriented so as to face each other in the first direction, and a pair of guide portions are regulated from the second peripheral edge portion side of the upper mold. It is inserted between the portions and slid over the pair of support portions in the first direction (specifically, the direction from the first peripheral edge portion of the base toward the second peripheral edge portion of the base). As a result, the second peripheral edge portion of the upper die is arranged between the clamp portion of the second clamping device provided on the second peripheral edge portion of the base and the lower surface of the upper base member, and the upper die with respect to the upper base member. The upper die is arranged at a specified position where the positions in the first direction and the second direction are positioned by the positioning unit.

Further, in the above-mentioned trimming device, the first clamp device is installed on the first peripheral edge portion of the base with the upper mold arranged at the specified position, whereby the clamp portion and the upper base of the first clamp device are installed. The first peripheral edge of the upper die is arranged between the lower surface of the member and the lower surface of the member. Then, by operating the air cylinder constituting the first clamp device and pressing the upper die first peripheral edge portion upward by the clamp portion, the upper die first peripheral edge portion is placed between the clamp portion and the lower surface of the upper base member. Clamp and fix. Further, in the second clamp device, the upper die second peripheral edge portion is pressed upward by the clamp portion by the operation of the air cylinder constituting the second clamp device in a state where the upper die is arranged at the specified position. The second peripheral edge of the upper die is sandwiched and fixed between the clamp portion and the lower surface of the upper base member.

As described above, in the trimming device described above, the upper die can be appropriately fixed to the lower surface of the upper base member by the first clamp device and the second clamp device.

Further, in the trimming device, the first clamp device is fixed by sandwiching and fixing the upper mold first peripheral edge portion between the clamp portion and the lower surface of the upper base member. It is preferable that the clamp device is a trimming device fixed to the upper base member.

In the above-mentioned trimming device, a first clamp device detachably provided with respect to the first peripheral edge portion of the base sandwiches and fixes the first peripheral edge portion of the upper mold between the clamp portion and the lower surface of the upper base member. , The first clamp device is fixed to the upper base member. Therefore, when fixing the upper mold to the lower surface of the upper base member, after arranging the upper mold at the specified position, the first clamp device is fixed to the first peripheral edge portion of the base by a fixing means (other member) such as a bolt. If it is installed on the first peripheral edge of the base and fixed by sandwiching the first peripheral edge of the upper die between the clamp portion of the first clamping device and the lower surface of the upper base member, the first clamping device can be attached to the upper base. It can be fixed to the member. As described above, in the trimming device described above, the first clamp device can be easily and quickly fixed to the upper base member.

Further, in the trimming device, the first clamp device is located on the upper end side of the first clamp device in a state of being installed on the first peripheral edge portion of the base, and is located on the first peripheral edge portion of the base. With the engaging portion to be engaged and installed on the first peripheral edge portion of the base, the clamp portion presses the upper mold first peripheral edge portion upward by the operation of the air cylinder, and the engagement portion is engaged. By sandwiching the upper mold and the upper base member between the clamp portion and the engaging portion in a mode in which the first peripheral edge portion of the base is pressed downward by the joint portion, the upper mold is pressed against the upper base member. It is preferable that the first clamp device is a trimming device that is fixed to the upper base member.

In the trimming device described above, the first clamp device is in a state where the first clamp device is installed on the first peripheral edge portion of the base (the first clamp device is placed on the first peripheral edge portion of the base by another fixing means such as a bolt). It means that it is installed on the first peripheral edge of the base without being fixed), and has an engaging portion that is located on the upper end side of the first clamp device and engages with the first peripheral edge of the base. There is.

In this trimming device, the first peripheral edge of the upper die is pressed upward by the clamp portion of the first clamp device by the operation of the air cylinder constituting the first clamp device, and the base is pressed by the engaging portion of the first clamp device. 1 In a mode of pressing the peripheral portion downward, the upper mold is fixed to the upper base member by sandwiching the upper mold and the upper base member by the clamp portion and the engaging portion of the first clamping device, and the first The clamping device is fixed to the upper base member. As described above, in the trimming device described above, the first clamp device can be easily and quickly fixed to the upper base member.

It is a front view schematic diagram of the trimming apparatus which concerns on embodiment. It is a B view plan view (bottom view) of FIG. It is a D view side view of FIG. It is a figure explaining the attachment / detachment method of the 1st clamp device. It is a figure explaining the attachment / detachment method of the upper die. It is another figure explaining the attachment / detachment method of the upper die. It is another figure explaining the attachment / detachment method of the upper die. It is another figure explaining the attachment / detachment method of the upper die. It is a front view schematic diagram of the trimming apparatus which concerns on a deformed form.

<Embodiment>
Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic front view of the trimming device 1 according to the embodiment. In FIG. 1, the tip end side (lower end side) of the cutting edge 37 is shown as a cross-sectional view. FIG. 2 is a plan view (bottom view) of FIG. 1B. FIG. 3 is a side view taken along the line D of FIG. FIG. 4 is a diagram illustrating a method of attaching / detaching the first clamp device 40. 5 and 8 are views for explaining a method of attaching and detaching the upper mold. 4 to 6 are plan views (bottom views) of the lower surface 20b and the like of the upper base member 20 in a plan view. 7 and 8 are side views of the upper base member 20 and the like as viewed from the side.

The trimming device 1 of the present embodiment is a device for trimming the molded sheet SH. The molded sheet SH is a sheet obtained by thermoforming a flat band-shaped sheet using a thermoforming apparatus (not shown) in the previous molding step to form a box-shaped molded product PR. Further, the molded sheet SH is composed of, for example, a resin sheet such as a thermoplastic resin sheet, a thermoplastic sheet other than a resin exhibiting thermoplasticity, a moldable sheet such as paper, and the like. Further, examples of the molded product PR include a container such as a food container, a component such as an inner box of a home electric appliance and an operation panel, and the like.

Further, "trimming the molded sheet SH" means performing one of the following two processes. (1) The perimeter of the molded product PR in the molded sheet SH is cut in an annular shape over the entire circumference so that the molded product PR can be separated from the molded product SH. (2) Without cutting the entire circumference of the molded product PR in the molded product SH, the molded product PR is cut into a shape in which a part of the ring is interrupted except for a part around the molded product PR. A part of the periphery is connected to the molded sheet SH.

As shown in FIG. 1, the trimming device 1 of the present embodiment has an upper table 10, an upper base member 20 attached to the lower surface 10b of the upper table 10, and a fixing means 2 on the lower surface 20b side of the upper base member 20. The upper die 30 is detachably fixed, the lower table 50, the lower base member 60 attached to the upper surface 50b of the lower table 50, and the lower die 70 attached to the upper surface 60b of the lower base member 60.

The upper base member 20 has a rectangular shape in a plan view, and is the center of the upper base member 20 as a peripheral edge portion of the upper base member 20 in a plan view (plan view shown in FIGS. 2 and 4) of the upper base member 20. A base extending in the second direction D2 (direction orthogonal to the first direction D1, left-right direction in FIGS. 2 and 4) facing the first direction D1 (vertical direction in FIGS. 2 and 4) with C1 in between. The base third peripheral edge 23 and the base fourth extending in the first direction D1 facing the second direction D2 with the center C1 of the upper base member 20 sandwiched between the first peripheral edge 21 and the base second peripheral edge 22. It has a peripheral edge portion 24 (see FIGS. 2 and 4).

In the present embodiment, the upper die 30 is a die having a cutting edge 37 for trimming. More specifically, the cutting blade 37 is a Thomson blade, and the upper mold 30 is a Thomson type having a Thomson blade. The upper die 30 includes four cutting blades 37, which are Thomson blades, and a flat plate-shaped substrate 36 that supports these four cutting blades 37. In this embodiment, the cutting edge 37 has a rectangular annular shape in a plan view (see FIG. 2). In a state where the upper die 30 is fixed to the upper base member 20, the cutting edge 37 projects downward from the lower surface 36b of the substrate 36.

The upper mold 30 of the present embodiment has a rectangular shape in a plan view, and is fixed to the upper base member 20 as a peripheral portion of the upper mold 30 in a plan view (plan view shown in FIG. 2). Then, with the center C2 of the upper die 30 in between, it extends in the second direction D2 (direction orthogonal to the first direction D1, left-right direction in FIG. 2) facing the first direction D1 (vertical direction in FIG. 2). The upper die first peripheral edge portion 31 and the upper die second peripheral edge portion 32, and the upper die third peripheral edge portion 33 extending in the first direction D1 facing the second direction D2 with the center C2 of the upper die 30 sandwiched between them. It has a fourth peripheral edge portion 34 of the upper die. Further, in the upper mold 30, the dimension M1 in the first direction D1 is made smaller than the dimension M2 in the second direction D2 (see FIG. 5).

The upper table 10 and the lower table 50 are moved up and down by a drive mechanism (not shown) to move between a set separation position (the position where they are closest to each other) and the proximity position (the position where they are closest to each other). Proximate and separate in the vertical direction. As a result, the upper base member 20 attached to the lower surface 10b of the upper table 10 and the upper mold 30 fixed to the lower surface 20b side of the upper base member 20 are separated from each other (uppermost position) and closer to each other (lowermost position). The lower base member 60 attached to the upper surface 50b of the lower table 50 and the lower mold 70 attached to the upper surface 60b of the lower base member 60 are separated from each other (lowermost position). And up and down between the proximity position (top position).

In such a trimming device 1, first, as shown in FIG. 1, in a state where the upper table 10 and the lower table 50 are arranged at separate positions, in the transport direction DH (direction from left to right in FIG. 1). One shot of the molded sheet SH to be conveyed (the portion shown in FIG. 1) is carried (arranged) between the upper mold 30 and the lower mold 70. In this state, the transportation of the molded sheet SH is temporarily stopped.

Next, the trimming device 1 moves the upper table 10 and the lower table 50 to close positions by a drive mechanism (not shown), and in the space S surrounded by the respective cutting blades 37 provided in the upper mold 30. The molded sheet SH is trimmed by the cutting edge 37 while accommodating each molded product PR. At this time, the tip (lower end) of the cutting edge 37 penetrates the molded sheet SH in the thickness direction (vertical direction) and comes into contact with the upper surface 70b of the lower mold 70. After that, the upper table 10 and the lower table 50 are moved to separate positions by a drive mechanism (not shown), and the trimmed molded sheet SH is transported in the transport direction DH. By repeating such a process, the molded sheet SH is continuously trimmed.

By the way, in the conventional trimming device (for example, Patent Document 1), the upper mold is detachably fixed to the lower surface side of the upper base member by using bolts and nuts (fixing means). Therefore, when replacing the upper mold (that is, removing the used upper mold and attaching a new upper mold to the lower surface side of the upper base member), first, the bolt fixing the upper mold is performed. And the nut was removed, the upper mold used was removed, and then a new upper mold was attached to the lower surface side of the upper base member using bolts and nuts.

However, when the new upper mold is attached to the lower surface side of the upper base member in this way, the operator contacts the new upper mold directly or indirectly via the metal plate with respect to the lower surface of the upper base member. It was necessary to attach the new upper mold to the lower surface side of the upper base member by using a plurality of bolts and nuts while maintaining the state of being kept (that is, supporting the new upper mold). Such installation work was troublesome for the operator.

On the other hand, in the trimming device 1 of the present embodiment, the fixing means for detachably fixing the upper mold 30 to the lower surface 20b side of the upper base member 20 is a clamp device having air cylinders 41 and 81 (first clamp device 40). And a second clamp device 80) (see FIGS. 1 to 3). The first clamp device 40 and the second clamp device 80 are provided on the upper base member 20, and expand and contract in the vertical direction by the operation of the air cylinders 41 and 81. The first clamp device 40 and the second clamp device 80 are provided so as to face the first direction D1 by three each.

Further, the first clamp device 40 and the second clamp device 80 are provided at the tips of the piston rods 42, 82 of the air cylinders 41, 81 (in other words, in the state of being provided on the upper base member 20, the piston rods 42, 82). In the radial direction of the piston rods 42 and 82 (in other words, in the state of being provided on the upper base member 20, the direction orthogonal to the vertical direction. Specifically, the first direction D1). It has clamp portions 43, 83 in a form extending to (see FIGS. 1 to 3).

Therefore, by operating the air cylinders 41 and 81 in the direction of shortening the lengths of the air cylinders 41 and 81 (upward in FIGS. 1 and 3), the clamp portions 43 and 83 move upward. As a result, the clamp portions 43 and 83 can be brought closer to the lower surface 20b of the upper base member 20. On the contrary, by operating the air cylinders 41 and 81 in the direction of extending the lengths of the air cylinders 41 and 81 (downward in FIGS. 1 and 3), the clamp portions 43 and 83 move downward. As a result, the clamp portions 43 and 83 can be kept away from the lower surface 20b of the upper base member 20.

Further, the first clamp device 40 and the second clamp device 80 have a peripheral edge portion of the upper mold 30 (with the upper mold first peripheral edge portion 31) arranged between the clamp portions 43 and 83 and the lower surface 20b of the upper base member 20. A part of the upper die second peripheral edge portion 32) is operated by the air cylinders 41 and 81 (specifically, the operation of the air cylinders 41 and 81 in the direction of shortening the length of the air cylinders 41 and 81. For example, the air cylinders 41 and 81 are operated in a direction in which the clamp portions 43 and 83 are brought closer to the lower surface 20b of the upper base member 20), and the clamp portions 43 and 83 are pressed upward to the clamp portions 43 and 83. A part of the peripheral edge portion (upper die first peripheral edge portion 31 and upper die second peripheral edge portion 32) of the upper die 30 is sandwiched and fixed between the lower surface 20b of the base member 20 and the upper die member 20. The upper mold 30 is fixed (see FIGS. 1 to 3).

Specifically, the first clamp device 40 is provided on the first peripheral edge portion 21 of the base of the upper base member 20 with the clamp portion 43 facing downward. In this state, the clamp portion 43 of the first clamp device 40 is located on one side D11 (base first peripheral edge) in the first direction D1 (vertical direction in FIG. 2) from the lower side of the tip end portion (lower end portion) of the piston rod 42. It has a form extending from the portion 21 toward the second peripheral edge portion 22 of the base (downward in FIG. 2), and the tip portion of the clamp portion 43 extends below the upper mold first peripheral edge portion 31 of the upper mold 30. (See FIGS. 1 to 3). In the present embodiment, the three first clamp devices 40 are provided on the first peripheral edge portion 21 of the base so as to be lined up in the second direction D2 at equal intervals.

Further, the second clamp device 80 is provided on the second peripheral edge portion 22 of the base of the upper base member 20 with the clamp portion 83 facing downward. In this state, the clamp portion 83 of the second clamp device 80 starts from the lower side of the tip end portion (lower end portion) of the piston rod 42, and from the base second peripheral edge portion 22 in the first direction D1 (vertical direction in FIG. 2). It has a form extending in the direction toward the second peripheral edge portion 22 of the base (the direction from the bottom to the top in FIG. 2), and the tip portion of the clamp portion 83 extends below the second peripheral edge portion 32 of the upper die of the upper die 30. (See FIGS. 1 to 3). In the present embodiment, the three second clamp devices 80 are provided on the second peripheral edge portion 22 of the base so as to be arranged in the second direction D2 at equal intervals.

Therefore, in the first clamp device 40, the air cylinder 41 is operated so as to shorten the length of the air cylinder 41, and the clamp portion 43 is moved upward, so that the upper die first peripheral edge portion 31 of the upper die 30 is formed. Is partially pressed upward by the clamp portion 43, and is fixed with the upper mold first peripheral edge portion 31 sandwiched between the clamp portion 43 and the lower surface 20b of the upper base member 20 to the upper base member 20. The upper mold 30 can be fixed (see FIGS. 1 to 3).

Further, in the second clamp device 80, the air cylinder 81 is operated so as to shorten the length of the air cylinder 81, and the clamp portion 83 is moved upward, whereby the upper mold second peripheral edge portion 32 of the upper mold 30 is operated. Is pressed upward by the clamp portion 83, and is fixed by sandwiching the upper mold second peripheral edge portion 32 between the clamp portion 83 and the lower surface 20b of the upper base member 20, and is fixed to the upper base member 20. The upper mold 30 can be fixed (see FIGS. 1 to 3).

As described above, in the trimming device 1 of the present embodiment, the upper die 30 can be easily fixed to the lower surface 20b side of the upper base member 20. In this embodiment, the pressure (air pressure) of the air supplied to the air cylinders 41 and 81 is 0.8 MPa.

Further, since the trimming device 1 of the present embodiment has the fixed structure of the upper die 30 as described above, when the upper die 30 is removed from the upper base member 20, the first clamp device 40 and the second clamp device 80 are used. By operating the constituent air cylinders 41 and 81 so as to extend the length of the air cylinders 41 and 81 (in other words, operating the clamp portions 43 and 83 so as to keep them away from the lower surface 20b of the upper base member 20). , The peripheral edge portion of the upper die 30 (the first peripheral edge portion 31 of the upper die and the second peripheral edge portion 32 of the upper die) is sandwiched and fixed between the clamp portions 43 and 83 and the lower surface 20b of the upper base member 20. It can be released from the state (see FIG. 8). As a result, the upper mold 30 can be removed from the upper base member 20. As described above, in the trimming device 1 of the present embodiment, the upper mold can be easily removed.

Therefore, in the trimming device 1 of the present embodiment, the replacement work of the upper die 30 can be easily performed. That is, the used upper mold 30 can be easily removed from the upper base member 20, and a new upper mold 30 can be easily attached to the lower surface 20b side of the upper base member 20.

When the upper die 30 is attached to the lower surface 20b of the upper base member 20 in a manner in which the upper surface 30c of the upper die 30 (board 36) is brought into contact with the lower surface 20b of the upper base member 20, during trimming (cutting). ), The root portion of the cutting blade 37 (Thomson blade) exposed on the upper surface 30c of the upper mold 30 (board 36) is pressed against the lower surface 20b of the upper base member 20 to be one of the lower surface 20b of the upper base member 20. There is a risk that the part will be dented (a mark of pressure contact will remain). Therefore, in order to prevent this, it is preferable to interpose a metal protective plate (not shown) between the upper surface 30c of the upper mold 30 (board 36) and the lower surface 20b of the upper base member 20. In this case, the upper mold 30 has a protective plate (not shown) with a metal protective plate (not shown) interposed between the upper surface 30c of the upper mold 30 (Thomson type) and the lower surface 20b of the upper base member 20. It is fixed to the lower surface 20b side of the upper base member 20 together with (not shown).

Further, the structure of the trimming device 1 of the present embodiment and the method of attaching and detaching the upper mold 30 will be described in detail. In the trimming device 1, positioning portions 28 and 29 for positioning the positions of the upper mold 30 in the first direction D1 and the second direction D2 with respect to the upper base member 20 are provided on the lower surface 22b of the base second peripheral edge portion 22 of the upper base member 20. It is provided (see FIGS. 2 and 5). The positioning portion 28 is located on the base third peripheral edge portion 23 side (left side in FIGS. 2 and 5) of the lower surface 22b of the base second peripheral edge portion 22, and is a cylinder extending downward from the lower surface 22b of the base second peripheral edge portion 22. It has a shape. The positioning portion 29 is located on the base fourth peripheral edge portion 24 side (right side in FIGS. 2 and 5) of the lower surface 22b of the base second peripheral edge portion 22, and is a cylinder extending downward from the lower surface 22b of the base second peripheral edge portion 22. It has a shape.

Further, the lower surface 23b of the third peripheral edge portion 23 of the base and the lower surface 24b of the fourth peripheral edge portion 24 of the base are a pair of guide portions 26, 27 extending in the first direction D1 and separated from each other in the second direction D2. A pair of guide portions 26, 27 facing each other are provided (see FIGS. 1 to 5). As shown in FIG. 1, the guide portion 27 has an L-shaped front view, and in the front view shown in FIG. 1, a regulating portion 27b extending downward from the lower surface 20b of the upper base member 20 and a regulating portion 27b extending downward from the regulating portion 27b. It has a support portion 27c extending in two directions D2 (specifically, a direction from the third peripheral edge portion 23 of the base toward the fourth peripheral edge portion 24 of the base, to the right in FIG. 1). As shown in FIG. 1, the guide portion 26 has an inverted L-shape in front view, and in the front view shown in FIG. 1, the regulating portion 26b extending downward from the lower surface 20b of the upper base member 20 and the regulating portion 26b It has a support portion 26c extending in a second direction D2 (specifically, a direction from the fourth peripheral edge portion 24 of the base toward the third peripheral edge portion 23 of the base, to the left in FIG. 1).

The pair of regulating portions 26b and 27b have a form extending in the first direction D1 in a plan view, and are arranged so as to face the second direction D2. The regulating portions 26b and 27b are arranged so as to face the second direction D2 with a distance slightly longer than the dimension M2 of the second direction D2 of the upper die 30. As a result, the upper mold 30 can be inserted between the regulating portions 26b and 27b. Such a pair of regulating portions 26b, 27b is provided in the second direction D2 with respect to the upper die 30 inserted between the regulating portions 26b and 27b when the upper die 30 is attached to the lower surface 20b side of the upper base member 20. Regulate such position.

Further, the pair of support portions 26c and 27c have a form extending in the first direction D1 in a plan view, and are arranged so as to face the second direction D2. The regulating portions 26b and 27b are arranged so as to face the second direction D2 with a distance shorter than the dimension M2 of the second direction D2 of the upper die 30. Such a pair of support portions 26c and 27c is a third peripheral edge portion of the upper mold 30 inserted between the regulating portions 26b and 27b when the upper mold 30 is attached to the lower surface 20b side of the upper base member 20. In contact with the lower surface 33b of 33 and the lower surface 34b of the upper die fourth peripheral edge 34, the lower surfaces 33b and 34b of the upper die third peripheral edge 33 and the upper die fourth peripheral edge 34 are supported.

In this trimming device 1, the upper die 30 is passed from the base first peripheral edge portion 21 side (upper side in FIG. 5) of the upper base member 20 to the lower side of the base first peripheral edge portion 21 so that the upper base member 20 is passed. It is attached to the lower surface 20b side. Specifically, as shown in FIG. 5, with respect to the upper die 30, the upper die first peripheral edge portion 31 and the upper die second peripheral edge portion 32 are oriented so as to face the first direction D1 and the upper die second peripheral edge portion 32. It is inserted between the pair of restricting portions 26b and 27b of the pair of guide portions 26 and 27 from the portion 32 side, and the top of the pair of support portions 26c and 27c is placed on one side D11 (downward in FIG. 5) of the first direction D1. Move the slide. As a result, the upper die 30 is arranged at a predetermined position (position shown in FIG. 6) in which the positions of the first direction D1 and the second direction D2 of the upper die 30 with respect to the upper base member 20 are positioned by the positioning portions 28 and 29. ..

The upper die second peripheral edge portion 32 of the upper die 30 is formed with semicircular notches 38 and 39 that fit into the positioning portions 28 and 29 (see FIG. 5). By fitting (contacting) the notched portions 38, 39 with the outer peripheral surfaces of the positioning portions 28, 29 of the upper base member 20, the first direction D1 and the second direction D2 of the upper mold 30 with respect to the upper base member 20 Position is positioned. As a result, the upper mold 30 is arranged at a specified position (position shown in FIG. 6).

By the way, in the upper mold 30, the dimension M1 in the first direction D1 is smaller than the dimension M2 in the second direction D2 (see FIG. 5). Therefore, as described above, the upper die 30 is placed on the pair of support portions 26c and 27c with the upper die first peripheral edge portion 31 and the upper die second peripheral edge portion 32 facing the first direction D1. By sliding the upper die 30 in the first direction D1 and arranging it at the specified position, the slide moving distance of the upper die 30 can be shortened, and the upper die 30 can be quickly placed at the specified position. it can.

However, in such a mounting structure of the upper die 30, the upper die 30 is passed from the base first peripheral edge portion 21 side of the upper base member 20 to the lower side of the base first peripheral edge portion 21, and a pair of guide portions. When inserting between the pair of restricting portions 26b and 27b of 26 and 27, if the first clamp device 40 is provided on the first peripheral edge portion 21 of the base, the first clamp device 40 is used as the pair of restricting portions. It prevents the upper mold 30 from being inserted between 26b and 27b. That is, when the first clamp device 40 is provided on the first peripheral edge portion 21 of the base, the upper die 30 collides with the first clamp device 40, and the upper die 30 is between the pair of regulating portions 26b and 27b. Cannot be inserted.

On the other hand, in the trimming device 1 of the present embodiment, the first clamp device 40 is detachably provided with respect to the first peripheral edge portion 21 of the base (see FIG. 4). Therefore, when attaching / detaching the upper die 30, the upper die 30 can be appropriately attached / detached by removing the first clamp device 40 from the first peripheral edge portion 21 of the base (see FIG. 5).

The first clamp device 40 has engaging portions 45b and 45c protruding in the left-right direction (second direction D2) at the upper end portion (a portion opposite to the clamp portion 43). (See FIGS. 1 and 4). Further, the base first peripheral edge portion 21 of the upper base member 20 is formed with a notch portion 25 into which the upper end side of the first clamp device 40 is inserted in the first direction D1. Then, in the portion of the base first peripheral edge portion 21 adjacent to the notch portion 25 in the second direction D2, the engaging support portions 25b that support the engaging portions 45b and 45c of the first clamp device 40, 25c is formed (see FIGS. 1 and 4).

Therefore, the engaging portions 45b and 45c of the first clamp device 40 slide and move on one side D11 (downward in FIG. 4) of the first direction D1 on the engaging support portions 25b and 25c of the upper base member 20. In this way, the first clamp device 40 can be installed on the first peripheral edge portion 21 of the base by inserting the portion on the upper end side of the first clamp device 40 into the notch portion 25. On the contrary, the engaging portions 45b and 45c of the first clamp device 40 slide and move on the engaging support portions 25b and 25c of the upper base member 20 in the other side D12 (upward in FIG. 4) of the first direction D1. In this way, the first clamp device 40 can be removed from the first peripheral edge portion 21 of the base by taking out the portion on the upper end side of the first clamp device 40 from the notch portion 25.

Therefore, in the trimming device 1 of the present embodiment, when the upper mold 30 is attached to the lower surface 20b side of the upper base member 20, the upper mold 30 is in a state where the first clamp device 40 is removed from the first peripheral edge portion 21 of the base. The 30 is attached to the lower surface 20b side of the upper base member 20 so as to pass below the first peripheral edge portion 21 of the base from the first peripheral edge portion 21 side of the base of the upper base member 20.

Specifically, as shown in FIG. 5, with respect to the upper die 30, the upper die first peripheral edge portion 31 and the upper die second peripheral edge portion 32 are oriented so as to face the first direction D1 and the upper die second peripheral edge portion 32. Inserted from the portion 32 side between the pair of restricting portions 26b, 27b of the pair of guide portions 26, 27, and on the pair of support portions 26c, 27c, one side D11 of the first direction D1 (base first peripheral edge portion 21). Slide in the direction from to the second peripheral edge of the base 22 (downward in FIG. 5). Then, as shown in FIG. 6, the cutout portions 38, 39 of the upper mold 30 are fitted to the outer peripheral surfaces of the positioning portions 28, 29 of the upper base member 20, so that the upper mold 30 is fitted to the upper base member 20. The positions of the first direction D1 and the second direction D2 are positioned.

As a result, the upper die 30 is arranged at a specified position (position shown in FIG. 6), and the upper die second peripheral edge portion 32 is a clamp portion of the second clamp device 80 provided on the base second peripheral edge portion 22. It is arranged between the 83 and the lower surface 20b of the upper base member 20 (see FIGS. 6 and 7). Note that FIG. 7 is a side view showing a state when the upper die 30 is arranged at a specified position. As shown in FIG. 7, when the upper die 30 is arranged at a specified position in order to attach the upper die 30 to the lower surface 20b side of the upper base member 20, the length of the air cylinder 81 constituting the second clamp device 80 is used. Is the longest, and the clamp portion 83 is arranged at the position farthest from the lower surface 20b of the upper base member 20 (the lowest position, that is, the bottom dead center). As a result, when the upper die 30 is arranged at the specified position, the upper die second peripheral edge portion 32 is arranged between the clamp portion 83 of the second clamp device 80 and the lower surface 20b of the upper base member 20.

Further, in the trimming device 1 of the present embodiment, the first clamp device 40 is installed on the first peripheral edge portion 21 of the base as described above with the upper die 30 arranged at a predetermined position. 1 The upper die first peripheral edge portion 31 is arranged between the clamp portion 43 of the clamp device 40 and the lower surface 20b of the upper base member 20. Specifically, with the upper die 30 arranged at the specified position (the state shown in FIGS. 6 and 7), the engaging portions 45b and 45c of the first clamp device 40 are engaged with the first peripheral edge portion 21 of the base. The first clamp device 40 is inserted into the notch 25 of the first peripheral edge portion 21 of the base by sliding the portion on the upper end side of the first clamp device 40 so as to slide on the support portions 25b and 25c. It is installed on the first peripheral edge portion 21 of the base.

As a result, as shown in FIG. 8, the upper die first peripheral edge portion 31 is arranged between the clamp portion 43 of the first clamp device 40 and the lower surface 20b of the upper base member 20. When the first clamp device 40 is installed on the first peripheral edge portion 21 of the base, the length of the air cylinder 41 constituting the first clamp device 40 is maximized, and the clamp portion 83 is maximized in the first clamp device 40. Place it in the lower position (bottom dead center). As a result, when the first clamp device 40 is installed on the first peripheral edge portion 21 of the base, the upper die first peripheral edge portion 31 is between the clamp portion 43 of the first clamp device 40 and the lower surface 20b of the upper base member 20. Is placed in.

Then, the clamp portion 43 is moved upward by the operation of the air cylinder 41 constituting the first clamp device 40 (the operation of shortening the length of the air cylinder 41), and the upper die first peripheral edge portion 31 is moved to the clamp portion 43. By pressing upward with the clamp portion 43, the upper die first peripheral edge portion 31 is sandwiched and fixed between the clamp portion 43 and the lower surface 20b of the upper base member 20 (see FIG. 3).

Further, the clamp portion 83 is moved upward by the operation of the air cylinder 41 constituting the second clamp device 80 (the operation of shortening the length of the air cylinder 81), and the upper die second peripheral edge portion 32 is clamped. By pressing upward with the 83, the upper mold second peripheral edge portion 32 is sandwiched and fixed between the clamp portion 83 and the lower surface 20b of the upper base member 20 (see FIG. 3). As a result, the upper mold 30 can be fixed to the upper base member 20 (see FIGS. 1 to 3).

By the way, in the trimming device 1 of the present embodiment, the first clamp device 40 detachably provided with respect to the first peripheral edge portion 21 of the base has the clamp portion 43 and the lower surface 20b of the upper base member 20 as described above. The first clamp device 40 is fixed to the upper base member 20 by sandwiching and fixing the upper mold first peripheral edge portion 31 between them. Therefore, when the upper die 30 is attached to the lower surface 20b of the upper base member 20, after the upper die 30 is placed at the specified position, the first clamp device 40 is attached to the first peripheral edge of the base by a fixing means (other member) such as a bolt. It is installed on the first peripheral edge portion 21 of the base without being fixed to the portion 21, and the upper die first peripheral edge portion 31 is sandwiched between the clamp portion 43 of the first clamp device 40 and the lower surface 20b of the upper base member 20. If fixed, the first clamp device 40 can be fixed to the upper base member 20.

More specifically, as described above, in the first clamp device 40, the engaging portions 45b and 45c of the first clamp device 40 are supported by the engaging support portions 25b and 25c of the upper base member 20. , Installed on the base first peripheral edge 21 (The first clamp device 40 is installed on the base first peripheral edge 21 without being fixed to the base first peripheral edge 21 by other fixing means such as bolts. It becomes).

In this state, when the clamp portion 43 of the first clamp device 40 is moved upward by the operation of the air cylinder 41 constituting the first clamp device 40 (the operation of shortening the length of the air cylinder 41), the clamp portion 43 The upper mold first peripheral edge portion 31 is pressed upward, and the engaging support portions 25b, 25c of the base first peripheral edge portion 21 are pressed downward by the engaging portions 45b, 45c of the first clamp device 40. (See FIGS. 1 and 3). In such an embodiment, the upper die 30 (upper die first peripheral edge portion 31) and the upper base member 20 (base first peripheral edge portion 21) are formed by the clamp portion 43 and the engaging portions 45b and 45c of the first clamp device 40. By sandwiching, the upper mold 30 is fixed to the upper base member 20, and the first clamp device 40 is fixed to the upper base member 20. As described above, in the trimming device 1 of the present embodiment, the first clamp device 40 can be easily and quickly fixed to the upper base member 20.

Next, a method of removing the upper mold 30 attached to the trimming device 1 from the upper base member 20 will be described. First, the air cylinders 41 and 81 constituting the first clamp device 40 and the second clamp device 80 are operated so as to extend the lengths of the air cylinders 41 and 81 (in other words, the clamp portions 43 and 83 are placed on the upper base. (Move in a direction away from the lower surface 20b of the member 20). As a result, with respect to the upper die 30, the upper die first peripheral edge portion 31 and the upper die second peripheral edge portion 32 are sandwiched and fixed between the clamp portions 43 and 83 and the lower surface 20b of the upper base member 20. Release from (see FIG. 8).

Next, the engaging portions 45b and 45c of the first clamping device 40 are slid over the engaging supporting portions 25b and 25c of the upper base member 20, and the portion on the upper end side of the first clamping device 40 is cut. The first clamp device 40 is removed from the first peripheral edge portion 21 of the base by taking it out from the notch portion 25 (see FIG. 4). As a result, the upper mold third peripheral edge portion 33 and the upper mold fourth of the upper mold 30 are placed on the pair of support portions 26c and 27c of the pair of guide portions 26 and 27 provided on the lower surface 20b of the upper base member 20. In a mode in which the peripheral edge portion 34 is placed, the upper mold 30 is in a state of being supported by a pair of support portions 26c and 27c.

After that, the upper mold 30 slides on the pair of support portions 26c and 27c in the other side D12 of the first direction D1 (direction from the second peripheral edge portion 22 of the base toward the first peripheral edge portion 21 of the base, upward in FIG. 5). By moving the upper mold 30, the upper mold 30 can be removed from the upper base member 20 (see FIG. 5). As described above, in the trimming device 1 of the present embodiment, the upper die 30 can be easily and quickly removed. The second clamp device 80 is fixed to the second peripheral edge portion 22 of the base by a fixing means (for example, a bolt) (not shown).

As described above, in the trimming device 1 of the present embodiment, the upper die 30 can be easily attached to and detached from the upper base member 20, so that the upper die 30 can be easily replaced. That is, the used upper mold 30 can be easily removed from the upper base member 20, and a new upper mold 30 can be easily attached to the lower surface 20b side of the upper base member 20.

<Transformation form>
Next, a modified form of the present invention will be described with reference to the drawings. FIG. 9 is a schematic front view of the trimming device 101 according to the modified form. In FIG. 9, only the tip end side (upper end side) of the cutting edge 177 is shown as a cross-sectional view. In the trimming device 101 of the present modification, contrary to the trimming device 1 of the embodiment, the lower die 170 is a die having a cutting edge 177 for trimming. The cutting blade 177 is a Thomson blade, and the lower mold 170 is a Thomson type having a Thomson blade.

As shown in FIG. 9, the trimming device 101 of the present modification is detachably fixed to the upper table 10 similar to the embodiment, the upper base member 20 similar to the embodiment, and the lower surface 20b side of the upper base member 20. The upper mold 130, the lower table 50 similar to the embodiment, the lower base member 60 similar to the embodiment, and the lower mold 170 attached to the upper surface 60b of the lower base member 60 are provided.

The upper mold 130 is made of metal (for example, stainless steel) and has a rectangular shape in a plan view. The upper mold 130 has a rectangular flat plate-shaped substrate 136 and a tubular portion 137 extending downward from the lower surface 136b of the substrate 136. Similar to the upper mold 30 of the embodiment, the upper mold 130 is detachably fixed to the lower surface 20b side of the upper base member 20 by the first clamp device 40 and the second clamp device 80. The first clamp device 40 and the second clamp device 80 are provided on the upper base member 20 as in the embodiment.

Of these, the first clamp device 40 is detachably provided with respect to the first peripheral edge portion 21 of the base, as in the embodiment. Therefore, even in the trimming device 101 of the present modification, the upper die 130 can be attached to and detached from the lower surface 20b side of the upper base member 20 by the same method as the trimming device 1 of the embodiment. Therefore, even in the trimming device 101 of this modified form, the upper die 130 can be easily fixed to the lower surface 20b side of the upper base member 20. Furthermore, since the upper die 130 can be easily attached to and detached from the upper base member 20, the upper die 130 can be easily replaced. That is, the used upper mold 130 can be easily removed from the upper base member 20, and a new upper mold 130 can be easily attached to the lower surface 20b side of the upper base member 20.

In such a trimming device 101, first, as shown in FIG. 9, the upper table 10 and the lower table 50 are arranged at separate positions in the transport direction DH (direction from left to right in FIG. 9). One shot (the portion shown in FIG. 9) of the molded sheet SH to be conveyed is carried (arranged) between the upper mold 30 and the lower mold 70. In this state, the transportation of the molded sheet SH is temporarily stopped.

Next, the upper table 10 and the lower table 50 are moved to close positions by a drive mechanism (not shown), and the lower mold 170 is housed inside the tubular portion 137 provided in the upper mold 130. The molded sheet SH is trimmed by the cutting blade 177 (Thomson blade) of the above. At this time, the tip (upper end) of the cutting edge 177 penetrating the molded sheet SH in the thickness direction (vertical direction) comes into contact (contact) with the annular tip surface 137b of the tubular portion 137 of the upper die 130. After that, the upper table 10 and the lower table 50 are moved to separate positions by a drive mechanism (not shown), and the trimmed molded sheet SH is transported in the transport direction DH. By repeating such a process, the molded sheet SH is continuously trimmed.

In the above, the present invention has been described in accordance with the embodiments and modifications, but the present invention is not limited to the above-described embodiments and the like, and it is said that the present invention can be appropriately modified and applied without departing from the gist thereof. Not to mention.

1,101 Trimming device 2 Fixing means (clamping device)
10 Upper table 10b Lower surface 20 Upper base member 20b Lower surface 21 Base 1st peripheral edge 22 Base 2nd peripheral edge 23 Base 3rd peripheral edge 24 Base 4th peripheral edge 26, 27 Guide section 26b, 27b Restriction section 26c, 27c Support section 28, 29 Positioning part 30, 130 Upper mold 31 Upper mold 1st peripheral edge 32 Upper mold 2nd peripheral edge 33 Upper mold 3rd peripheral edge 34 Upper mold 4th peripheral edge 37,177 Cutting blade (Thomson blade)
40 1st clamp device 41,81 Air cylinder 42,82 Piston rod 43,83 Clamp part 45b, 45c Engagement part 50 Lower table 50b Upper surface 60 Lower base member 60b Upper surface 70, 170 Lower mold 80 Second clamp device D1 1st Direction D2 2nd direction M1 1st direction dimension M2 2nd direction dimension SH molded sheet

Claims (4)

A trimming device that trims molded sheets.
The upper table, the upper base member attached to the lower surface of the upper table, the upper mold detachably fixed to the lower surface side of the upper base member by fixing means, the lower table, and the upper surface of the lower table. A lower base member and a lower mold attached to the upper surface of the lower base member are provided.
In a trimming device in which either the upper mold or the lower mold has a cutting edge for performing the trimming.
The fixing means is a clamp device having an air cylinder, which is provided on the upper base member and expands and contracts in the vertical direction by the operation of the air cylinder.
The clamp device is
It has a clamp portion provided at the tip of the piston rod of the air cylinder and extending in the radial direction of the piston rod.
A part of the peripheral edge portion of the upper mold arranged between the clamp portion and the lower surface of the upper base member is pressed upward by the clamp portion by the operation of the air cylinder to obtain the clamp portion. A trimming device that clamps and fixes a part of the peripheral edge of the upper mold to the lower surface of the upper base member to fix the upper mold to the upper base member. The trimming device according to claim 1.
The upper base member has a rectangular shape in a plan view, and serves as a peripheral portion of the upper base member in a plan view of the upper base member so as to face the first direction with the center of the upper base member in between. A base extending in the first direction facing the second direction with the center of the upper base member sandwiched between the first peripheral edge portion of the base and the second peripheral edge portion of the base extending in the second direction orthogonal to the first direction. It has a third peripheral edge and a fourth peripheral edge of the base.
The upper mold has a rectangular shape in a plan view, and as the peripheral portion of the upper mold, in a plan view of the upper mold in a state of being fixed to the upper base member, the center of the upper mold is sandwiched between the upper molds. The first peripheral edge of the upper die and the second peripheral edge of the upper die facing the first direction and extending in the second direction, and the center of the upper die sandwiched between them, facing the second direction and facing the first direction. It has an upper mold third peripheral edge portion and an upper mold fourth peripheral edge portion extending to, and the dimension in the first direction is smaller than the dimension in the second direction.
On the lower surface of the second peripheral edge portion of the base, positioning portions for positioning the positions of the upper mold in the first direction and the second direction with respect to the upper base member are provided.
On the lower surface of the third peripheral edge portion of the base and the lower surface of the fourth peripheral edge portion of the base, a pair of guide portions extending in the first direction, which are separated from each other in the second direction and face each other. Is provided,
The pair of guide portions are regulating portions that regulate the position of the upper mold in the second direction when the upper mold is attached to the lower surface side of the upper base member, and face the second direction. A pair of restricting portions extending in the first direction, and a support portion for supporting the lower surfaces of the upper die third peripheral edge portion and the upper die fourth peripheral edge portion of the upper die, facing the second direction. It has a pair of support portions extending in the first direction and
The clamp device is a first clamp device provided on the first peripheral edge portion of the base and a second clamp device provided on the second peripheral edge portion of the base.
The first clamp device is detachably provided with respect to the first peripheral edge portion of the base.
The upper mold is
When attached to the lower surface side of the upper base member, the upper mold is mounted from the base first peripheral edge portion side of the upper base member in a state where the first clamp device is removed from the base first peripheral edge portion. The upper mold is made to pass below the first peripheral edge portion of the base so that the first peripheral edge portion of the upper mold and the second peripheral edge portion of the upper mold face each other in the first direction. The upper mold second peripheral edge portion is moved by inserting it from the second peripheral edge portion side between the pair of restricting portions of the pair of guide portions and sliding it on the pair of support portions in the first direction. The positioning portion is arranged between the clamp portion of the second clamp device and the lower surface of the upper base member, and the positions of the upper mold with respect to the upper base member in the first direction and the second direction are the positioning portions. Placed in the specified position positioned by
The first clamp device is installed on the first peripheral edge portion of the base in a state where the upper mold is arranged at the specified position, so that the clamp portion of the first clamp device and the upper base member are described. By arranging the upper die first peripheral edge portion between the lower surface and the upper die first peripheral edge portion and pressing the upper die first peripheral edge portion upward by the clamp portion by the operation of the air cylinder constituting the first clamp device, the upper die first peripheral edge portion is pressed upward by the clamp portion. The upper mold first peripheral edge portion is sandwiched and fixed between the clamp portion and the lower surface of the upper base member.
In the second clamp device, the upper mold second peripheral edge portion is pressed upward by the clamp portion by the operation of the air cylinder constituting the second clamp device in a state where the upper mold is arranged at the specified position. A trimming device for sandwiching and fixing the upper mold second peripheral edge portion between the clamp portion and the lower surface of the upper base member. The trimming device according to claim 2.
The first clamp device is fixed to the upper base member by sandwiching and fixing the upper mold first peripheral edge portion between the clamp portion and the lower surface of the upper base member. Trimming device. The trimming device according to claim 3.
The first clamp device is
In a state of being installed on the first peripheral edge of the base, it has an engaging portion that is located on the upper end side of the first clamp device and engages with the first peripheral edge of the base.
In the state of being installed on the first peripheral edge of the base, the operation of the air cylinder pushes the first peripheral edge of the upper mold upward by the clamp portion, and the engaging portion presses the first peripheral edge of the base upward. In a mode of pressing downward, the upper mold is fixed to the upper base member by sandwiching the upper mold and the upper base member between the clamp portion and the engaging portion, and the first clamping device is used. Is a trimming device fixed to the upper base member.

Images