Thermal forming die machine tool

Abstract

The utility model discloses a thermal forming die machine tool which is used for punching a plate and comprises a machine tool body and a forming die. The machine tool comprises a belt moving piece. The forming mold comprises a mold body, the mold body comprises an upper mold body and a lower mold body, the upper mold body comprises an upper mold base and an upper forming assembly, the upper forming assembly is installed on the upper mold base, and an upper forming structure is formed on the side face, facing the lower mold body, of the upper forming assembly; the lower die body comprises a lower die base and a lower forming assembly, the lower forming assembly comprises a lower forming piece and at least one edge pressing piece, a lower forming structure is formed on the side face, facing the upper die body, of the lower forming piece, and the upper forming structure corresponds to the lower forming structure in position and is matched with the lower forming structure in shape. The edge pressing piece is located on the peripheral side of part of the lower forming piece, and the belt moving piece is arranged to be capable of driving the edge pressing piece to move in the mold opening and closing direction of the upper mold body.

Description

Technical Field

[0001] This utility model relates to the field of thermoforming equipment technology, and in particular to thermoforming mold machine tools. Background Technology

[0002] Car door frames are formed by stamping heated sheet metal using a thermoforming die-cutting machine. Due to the complex structure of the B-pillar and the connection between the lower A-pillar and the B-pillar, the sheet metal is prone to wrinkling, stacking, and cracking during the stamping process. Currently, to prevent these issues, the die is equipped with a delayed nitrogen cylinder. This cylinder connects to a blank holder within the die, allowing it to move up and down and adjust the degree of sheet metal drawing. However, delayed nitrogen cylinders are expensive, increasing the cost of the forming die. Furthermore, the adjustable range of the delayed nitrogen cylinder's stroke and output pressure limits the sheet metal thickness that the thermoforming die-cutting machine can handle. Utility Model Content

[0003] To solve the above-mentioned technical problems and achieve at least one advantage of this utility model, this utility model provides a thermoforming die-making machine tool for stamping sheet metal, the thermoforming die-making machine tool comprising:

[0004] Machine tool, the machine tool including a conveyor belt;

[0005] A molding die includes a die body comprising an upper die body and a lower die body. The upper die body is openably disposed above the lower die body and forms an extrusion surface facing the lower die body. The upper die body includes an upper die base and an upper forming assembly, which is mounted on the upper die base. One side of the upper forming assembly facing the lower die body forms an upper forming structure. The lower die body includes a lower die base and a lower forming assembly, which includes a lower forming part and at least one blank holder. When the upper die body and the lower die body are joined... During molding, the extrusion surface abuts against the side of the blank holder facing the upper mold body. The lower forming part is installed on the lower mold base, and the side of the lower forming part facing the upper mold body forms a lower forming structure. The upper forming structure and the lower forming structure are corresponding in position and adapted in shape. The lower mold base forms a lower mounting cavity. The blank holder is movably installed in the lower mounting cavity, and the blank holder is located on the periphery of a portion of the lower forming part. The blank holder is driven to be connected to the belt shifter, and the belt shifter is configured to drive the blank holder to move along the opening and closing direction of the upper mold body.

[0006] According to one embodiment of the present invention, the lower molding part has an A-pillar molding part, a B-pillar molding part, an upper extension molding part, and a lower extension molding part. The upper extension molding part connects one end of the A-pillar molding part and one end of the B-pillar molding part and extends laterally. The lower extension molding part extends between the other end of the A-pillar molding part and the other end of the B-pillar molding part. The pressing edge is installed on both sides of the B-pillar molding part and the outer periphery of the lower extension molding part.

[0007] According to one embodiment of the present invention, the upper molding component includes a first molding member and at least one second molding member. The first molding member is mounted on the upper mold base and forms the upper molding structure. The second molding member is height-adjustably inserted into the first molding member.

[0008] According to one embodiment of the present invention, the lower mold base forms a guide structure on the inner wall of the lower mounting cavity, the pressing member forms a mounting structure, either the guide structure or the mounting structure is provided with a guide groove, and the other is provided with a protrusion. The guide structure is assembled with the mounting structure, and the guide structure is used to limit the movement of the pressing member along the opening and closing direction of the upper mold body.

[0009] According to one embodiment of the present invention, the molding die further includes a positioning component, the positioning component includes a plurality of positioning blocks, the plurality of positioning blocks are fixedly installed on the lower mold body, and the plurality of positioning blocks are distributed at intervals along the edge of the lower molding component, the plurality of positioning blocks form a molding area, and the plate material supported by the lower molding part and the pressing part is placed in the molding area.

[0010] According to one embodiment of the present invention, the upper mold body forms a plurality of clearance holes, the positions of the clearance holes correspond to the positions of the positioning blocks, and when the upper mold body and the lower mold body are closed, the end of the positioning block away from the lower mold base is inserted into the clearance hole.

[0011] According to one embodiment of the present invention, the belt conveyor is controllably connected to a controller, the controller being used to control the start / stop, travel distance, and output pressure of the belt conveyor.

[0012] According to one embodiment of the present invention, the positioning component further includes a positioning structure, which is disposed on the lower forming part and / or the pressing part. The plate and the positioning structure form an assembly structure at the corresponding positions. Either the positioning structure or the assembly structure is implemented as a pin, and the other is implemented as a hole. The plate is placed on the upper surface of the lower forming component in such a way that the assembly structure is assembled to the positioning structure and the edge of the plate is inserted into the forming area.

[0013] According to one embodiment of the present invention, the forming mold further includes multiple pairs of drag-reducing components. The drag-reducing components include a first drag-reducing structure and a second drag-reducing structure. The first drag-reducing structure is disposed on one side of the first forming part facing the lower forming component. The second drag-reducing structure is disposed on one side of the pressing member facing the first forming part and / or one side of the lower forming part facing the first forming part. The first drag-reducing structure and the second drag-reducing structure are positioned correspondingly and matched in shape. When the forming mold stamps the sheet metal, the first drag-reducing structure and the second drag-reducing structure work together to control the local material flow direction of the sheet metal.

[0014] According to one embodiment of the present invention, either the first drag-reducing structure or the second drag-reducing structure is implemented as a protrusion, and the other is implemented as a recess, and the position of the drag-reducing component corresponds to the part of the waste material of the semi-finished door frame formed by stamping the sheet metal. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of the thermoforming mold machine tool of this utility model is shown.

[0016] Figure 2 A cross-sectional view of the thermoforming die machine tool described in this utility model is shown.

[0017] Figure 3 It shows Figure 2 Enlarged view of the structure of part A in the middle.

[0018] Figure 4 A schematic diagram of the structure of the upper mold body of this utility model is shown.

[0019] Figure 5 An exploded view of the upper mold body described in this utility model is shown.

[0020] Figure 6 A schematic diagram of the structure of the lower mold body of this utility model is shown.

[0021] Figure 7 An exploded view of the lower mold body described in this utility model is shown.

[0022] Figure 8 It shows Figure 4 Enlarged view of the structure of section B.

[0023] Figure 9 It shows Figure 6 Enlarged view of the structure of section C. Detailed Implementation

[0024] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0025] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0026] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0027] refer to Figures 1 to 9 The thermoforming die-making machine tool according to a preferred embodiment of the present invention will be described in detail below. The thermoforming die-making machine tool can stamp the heated sheet metal to press the sheet metal into a semi-finished door frame of a preset shape. The semi-finished door frame is then cut to remove excess waste to obtain the finished door frame.

[0028] It is worth mentioning that the product door frame includes an A-pillar, a B-pillar, an upper extension, and a lower extension, wherein the upper extension connects the top of the A-pillar and the top of the B-pillar and extends laterally, and the lower extension extends between the bottom of the A-pillar and the bottom of the B-pillar.

[0029] Specifically, the thermoforming die machine tool includes a forming die 100 and a machine tool 200, wherein the forming die 100 includes a die body 110 and the machine tool 200 includes a conveyor belt 210.

[0030] The mold body 110 includes an upper mold body 111 and a lower mold body 112. The upper mold body 111 is closably disposed above the lower mold body 112.

[0031] The upper die body 111 forms an extrusion surface 11101, which faces the lower die body 112. The upper die body 111 includes an upper die base 1111 and an upper forming assembly 1112. The upper forming assembly 1112 is mounted on the upper die base 1111. An upper forming structure 111201 is formed on one side of the upper forming assembly 1112 facing the lower die body 112.

[0032] The lower mold body 112 includes a lower mold base 1121 and a lower forming assembly 1122. The lower forming assembly 1122 includes a lower forming part 11221 and at least one pressing element 11222. When the upper mold body 111 and the lower mold body 112 are closed, the extrusion surface 11101 abuts against the side of the pressing element 11222 facing the upper mold body 111. The lower forming part 11221 is installed on the lower mold base 1121, and the side of the lower forming part 11221 facing the upper mold body 111 forms a lower forming structure 1122101. The upper forming structure 111201 and the lower forming structure 1122101 are positioned correspondingly and matched in shape. The lower mold base 1121 forms a lower mounting cavity 112101, and the pressing member 11222 is movably mounted in the lower mounting cavity 112101, with the pressing member 11222 located on the periphery of a portion of the lower forming member 11221. A sheet metal is placed on the upper surface of the lower forming assembly 1122. The pressing member 11222 is drivably connected to the conveyor belt 210. The conveyor belt 210 is configured to drive the pressing member 11222 to move along the opening and closing direction of the upper mold body 111, thereby adjusting the height of the pressing member 11222 and thus adjusting the stretching degree of the mold body 110 on the sheet metal to prevent wrinkling, stacking, cracking, etc.

[0033] Specifically, during the process of the upper mold body 111 moving along the mold closing direction, the upper forming component 1112 first works with the pressing edge component 11222 to fix the sheet material; then the upper mold body 111 continues to move along the mold closing direction, so that the upper forming structure 111201 and the lower forming structure 1122101 work together to press the sheet material into a semi-finished door frame.

[0034] Those skilled in the art will understand that the present invention uses the belt shifter 210 to drive the pressing element 11222 to move up and down along the opening and closing direction of the upper mold body 111 in order to adjust the height of the pressing element 11222. In this way, the delayed nitrogen cylinder set in the existing mold can be eliminated, thereby reducing the manufacturing cost and volume of the forming mold 100.

[0035] Preferably, the conveyor belt 210 includes a push rod. The conveyor belt 210 is controllably connected to a controller, which controls the start / stop, travel distance, and output pressure of the conveyor belt 210. That is, the operator can control the height by which the conveyor belt 210 extends the pressing element 11222 out of the lower mounting cavity 112101 and the magnitude of the output pressure according to actual production needs, thereby adjusting the stretching degree of the sheet metal.

[0036] It is worth mentioning that the lower forming part 11221 has an A-pillar forming part 112211, a B-pillar forming part 112212, an upper extension forming part 112213, and a lower extension forming part 112214. The upper extension forming part 112213 connects one end of the A-pillar forming part 112211 and one end of the B-pillar forming part 112212 and extends laterally. The lower extension forming part 112214 extends between the other end of the A-pillar forming part 112211 and the other end of the B-pillar forming part 112212. The pressing edge member 11222 is installed on both sides of the B-pillar forming part 112212 and the outer periphery of the lower extension forming part 112214 to prevent wrinkling, stacking, cracking, and other phenomena from occurring in the B-pillar and lower extension of the product door frame during the stamping process.

[0037] It is worth mentioning that either the upper forming structure 111201 or the lower forming structure 1122101 is implemented as a convex strip, and the other is implemented as a groove.

[0038] Preferably, the upper molding assembly 1112 includes a first molding member 11121. The first molding member 11121 is mounted on the upper mold base 1111, and the first molding member 11121 forms the upper molding structure 111201.

[0039] Preferably, the upper forming assembly 1112 further includes at least one second forming member 11122, which is height-adjustably inserted into the first forming member 11121. One end of the second forming member 11122 facing the lower forming assembly 1122 works in conjunction with the lower forming assembly 1122 to stamp the sheet metal.

[0040] Furthermore, the lower mold base 1121 forms a guide structure 112102 on the inner wall of the lower mounting cavity 112101, and the pressing member 11222 forms a mounting structure 1122201. Either the guide structure 112102 or the mounting structure 1122201 is provided with a guide groove, while the other is provided with a protrusion. The guide structure 112102 is assembled with the mounting structure 1122201. The guide structure 112102 and the mounting structure 1122201 cooperate to limit the movement of the pressing member 11222 along the opening and closing direction of the upper mold body 111.

[0041] Furthermore, the molding die 100 also includes a positioning component 120.

[0042] The positioning component 120 includes a plurality of positioning blocks 121. The plurality of positioning blocks 121 are fixedly mounted on the lower mold body 112, and are spaced apart along the edge of the lower forming component 1122, forming a forming area 12001. The sheet metal, supported by the lower forming component 11221 and the edge pressing component 11222, is placed within the forming area 12001.

[0043] Preferably, the upper mold body 111 forms a plurality of clearance holes 11102, the positions of the clearance holes 11102 corresponding to the positions of the positioning block 121. When the upper mold body 111 and the lower mold body 112 are closed, the end of the positioning block 121 away from the lower mold base 1121 is inserted into the clearance hole 11102 to avoid the positioning block 121 from colliding with the upper mold body 111.

[0044] Preferably, the positioning component 120 further includes a positioning structure 122. The positioning structure 122 is disposed on the lower forming member 11221 and / or the pressing member 11222, and the plate material forms an assembly structure at the position corresponding to the positioning structure 122. Either the positioning structure 122 or the assembly structure is implemented as a pin, and the other is implemented as a hole. The plate material is placed on the upper surface of the lower forming component 1122 in such a way that the assembly structure is assembled to the positioning structure 122 and the edge of the plate material is engaged with the forming area 12001.

[0045] Furthermore, the molding die 100 also includes multiple pairs of drag-reducing components 130. Each drag-reducing component 130 includes a first drag-reducing structure 131 and a second drag-reducing structure 132. The first drag-reducing structure 131 is disposed on the side of the first molding part 11121 facing the lower molding component 1122, and the second drag-reducing structure 132 is disposed on the side of the pressing member 11222 facing the first molding part 11121 and / or the side of the lower molding part 11221 facing the first molding part 11121. The first drag-reducing structure 131 and the second drag-reducing structure 132 are positioned correspondingly and shaped to each other. When the upper mold body 111 and the lower mold body 112 are closed, the first drag-reducing structure 131 and the second drag-reducing structure 132 work together to bend at least one portion of the sheet metal.

[0046] It is understood that when the forming mold 100 is stamping the sheet metal, the first drag-reducing structure 131 and the second drag-reducing structure 132 work together to control the local material flow direction of the sheet metal in order to balance the pressure on the entire sheet metal during the stamping process. In this way, the height at which the belt shifter 210 drives the pressing edge member 11222 to move can be kept consistent, simplifying the adjustment work.

[0047] In one example, either the first drag-reducing structure 131 or the second drag-reducing structure 132 is implemented as a protrusion, and the other is implemented as a recess, so that the part of the semi-finished door and window corresponding to the drag-reducing component 130 forms a drawn rib or / and an arc surface, and the position of the drag-reducing component 130 corresponds to the part of the waste material of the semi-finished door frame made by stamping the sheet metal, so it does not affect the shape and structure of the product door frame.

[0048] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A thermoforming die machine for stamping a sheet material, characterized in that, The thermoforming die machine tool comprises: a machine tool comprising a belt mover; a die comprising a die body, the die body comprising an upper die body and a lower die body, the upper die body being openably disposed above the lower die body, the upper die body forming a pressing surface facing the lower die body, the upper die body comprising an upper die seat and an upper die assembly, the upper die assembly being mounted on the upper die seat, a side of the upper die assembly facing the lower die body forming an upper die structure, the lower die body comprising a lower die seat and a lower die assembly, the lower die assembly comprising a lower die member and at least one edge presser, the pressing surface and the edge presser abutting a side of the upper die body when the upper die body and the lower die body are closed, the lower die member being mounted on the lower die seat and a side of the lower die member facing the upper die body forming a lower die structure, the upper die structure and the lower die structure being positionally corresponding and shape-fitting, the lower die seat forming a lower mounting cavity, the edge presser being movably mounted in the lower mounting cavity and located at a peripheral side of part of the lower die member, the edge presser being drivingly connected to the belt mover, the belt mover being configured to drive the edge presser to move along a direction in which the upper die body is opened or closed.

2. The thermoforming die machine of claim 1, wherein, The lower die member has an A-pillar forming portion, a B-pillar forming portion, an upper extension forming portion, and a lower extension forming portion, the upper extension forming portion connecting one end of the A-pillar forming portion and one end of the B-pillar forming portion and extending transversely, the lower extension forming portion extending between the other end of the A-pillar forming portion and the other end of the B-pillar forming portion, the edge presser being mounted on both sides of the B-pillar forming portion and a peripheral side of the lower extension forming portion.

3. The thermoforming die machine of claim 1, wherein, The upper die assembly comprises a first die member and at least one second die member, the first die member being mounted on the upper die seat, the first die member forming the upper die structure, the second die member being adjustably inserted into the first die member in height.

4. The thermoforming die machine of claim 3, wherein, The lower die seat forms a guide structure on an inner wall of the lower mounting cavity, the edge presser forms a mounting structure, either the guide structure or the mounting structure is implemented as a guide groove, the other is implemented as a protruding strip, the guide structure and the mounting structure are assembled, the guide structure is configured to limit the movement of the edge presser along the direction in which the upper die body is opened or closed.

5. The thermoforming die machine of claim 4, wherein, The die further comprises a positioning assembly, the positioning assembly comprising a plurality of positioning blocks, the plurality of positioning blocks being fixedly mounted on the lower die body and being spacedly distributed along an edge of the lower die assembly, the plurality of positioning blocks forming a forming area, a plate supported by the lower die member and the edge presser being placed in the forming area.

6. The thermoforming die machine of claim 5, wherein, The upper die body forms a plurality of avoiding holes, positions of the avoiding holes corresponding to positions of the positioning blocks, when the upper die body and the lower die body are closed, an end of the positioning block away from the lower die seat is inserted into the avoiding hole.

7. The thermoforming die machine of claim 6, wherein, The belt moving device is controllably connected to a controller, which is used to control the start-stop, moving stroke and output pressure of the belt moving device.

8. The thermoforming die machine of claim 7, wherein, The positioning assembly further comprises a positioning structure arranged on the lower forming assembly and / or the blank holder, and a plate is placed on the upper surface of the lower forming assembly in a manner that the plate is assembled with the positioning structure and the plate edge is clamped into the forming area.

9. The thermoforming die machine of claim 8, wherein, The forming die further comprises a plurality of pairs of resistance reduction assemblies, each of which comprises a first resistance reduction structure arranged on one side of the first forming assembly facing the lower forming assembly and a second resistance reduction structure arranged on one side of the blank holder facing the first forming assembly and / or one side of the lower forming assembly facing the first forming assembly, the first resistance reduction structure and the second resistance reduction structure are positionally corresponding and shape-fitting, and the first resistance reduction structure and the second resistance reduction structure cooperatively control the local material flow direction of the plate during the stamping of the plate.

10. The thermoforming die machine of claim 9, wherein, Either the first resistance reduction structure or the second resistance reduction structure is implemented as a protrusion, and the other is implemented as a recess, and the resistance reduction assemblies are arranged at positions corresponding to the parts of the plate from which the semi-finished door frame waste is stamped.

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