Side core-pulling inner flanging forming mold convenient to demold

Abstract

The utility model discloses a side core-pulling inner flanging forming mold convenient to demold. The side core-pulling inner flanging forming mold comprises a lower mold base, an upper die holder; the punch anti-roll seat is elastically arranged on the lower die seat and is used for connecting a support of a material belt; the pressing and attaching assembly is elastically and slidably arranged at the bottom of the upper die base; the forming punch assembly is arranged on the punch anti-roll seat in an inserted mode and comprises a first forming block, a second forming block, a first punch and a second punch, and the first punch and the second punch correspond to the first forming block and the second forming block; the slotting tool is positioned at the bottom of the upper die holder and is provided with a wedge-shaped guide block; and the opposite ejection block is arranged on the lower die base in a lateral elastic sliding mode along the punch anti-side base, the outer side of the opposite ejection block is provided with a wedge-shaped face corresponding to the wedge-shaped guide block, and the inner side of the opposite ejection block is provided with a third forming block. The forming die can solve the problems that when a common forming die is used for workpiece negative angle inner flanging machining, workpiece positioning, flanging forming and demolding ejection are inconvenient, so that the machining efficiency is low, and the forming die is not suitable for continuous die production.

Description

Technical Field

[0001] The utility model relates to the technical field of forming dies, in particular to a side core-pulling and inner flanging forming die which is convenient for demolding. Background Art

[0002] In the flanging structure die of general materials, it is usually necessary to use the upper die pressure plate and the lower die forming plate to press the workpiece under pressure, and then the upper die punch starts to act to bend the workpiece into shape. However, after the bending of some workpiece structures, the flanging faces inward to form a certain negative angle, which makes the upper die punch unable to withdraw from the lower template surface after high-speed stamping, and it is difficult to demold the workpiece, resulting in the workpiece being unable to be quickly sent to the next working station by the feeder. The common forming dies are inconvenient for workpiece positioning, flanging forming, and demolding and ejecting when processing the inner flanging of the workpiece with a negative angle, resulting in low processing efficiency and being not applicable to continuous die production. Content of the Utility Model

[0003] The purpose of the utility model is to provide a side core-pulling and inner flanging forming die which is convenient for demolding in order to solve the problems that the common forming dies are inconvenient for workpiece positioning, flanging forming, and demolding and ejecting when processing the inner flanging of the workpiece with a negative angle, resulting in low processing efficiency and being not applicable to continuous die production.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme: a side core-pulling and inner flanging forming die which is convenient for demolding, comprising:

[0005] A lower die base;

[0006] An upper die base;

[0007] A punch anti-side seat, which is elastically inserted in the middle of the lower die base through a mounting seat and is used for supporting the connecting strip between workpieces to be processed;

[0008] A pressing component, which is elastically slidably arranged at the bottom of the upper die base;

[0009] A forming punch component, the bottom of which is provided with a positioning groove corresponding to the punch anti-side seat, and comprises a first forming block and a second forming block positioned on the bottom surface of the pressing component and a first punch and a second punch penetrating through the pressing component and positioned on the upper die base;

[0010] An inserting knife, which is positioned at the bottom of the upper die base and is provided with a wedge-shaped guide block at the bottom;

[0011] The opposite block is elastically and slidably arranged on the lower die base along the side of the punch anti-side seat. A wedge surface corresponding to the wedge guide block is arranged on the outer side, and a third forming block is arranged on the inner side. The third forming block is inserted into the workpiece to be processed bent into a U shape. The first forming block and the first punch form an inner flanging station, and the second forming block and the second punch form a secondary forming station.

[0012] As a further description of the above technical solution:

[0013] A first elastic member, a second elastic member, and a third elastic member are respectively arranged between the bottom of the punch anti-side seat and the lower die base, between the pressing and attaching assembly and the upper die base, and between the connecting block at the bottom of the opposite block and the mounting seat. The first elastic member, the second elastic member, and the third elastic member are nitrogen springs.

[0014] As a further description of the above technical solution:

[0015] A positioning pin is arranged in the positioning groove, a slot corresponding to the positioning pin is arranged on the punch anti-side seat, and a through hole corresponding to the positioning pin is arranged on the connecting strip.

[0016] As a further description of the above technical solution:

[0017] The lower die base is provided with a first anti-side block on the side of the insert knife, a lubricating plate is arranged on the side of the first anti-side block facing the first anti-side block, the lower die base is provided with a second anti-side block on the sides of the first punch and the second punch, and the lubricating plate is arranged between the second anti-side block and the corresponding first punch or second punch.

[0018] As a further description of the above technical solution:

[0019] The lower die base is provided with an anti-side guide rail slidably connected to the side of the opposite block.

[0020] As a further description of the above technical solution:

[0021] A V-shaped pressing surface matching the flanging end is arranged on the side of the first punch facing the workpiece to be processed, and a primary forming notch extends at the end of the V-shaped pressing surface of the first punch.

[0022] As a further description of the above technical solution:

[0023] A secondary forming notch matching the flanging end of the workpiece to be processed after inner flanging is arranged on the side of the second punch, and the primary forming notch and the secondary forming notch match the surface of the corresponding third forming block.

[0024] As a further description of the above technical solution:

[0025] A V-shaped support surface with an obtuse angle corresponding to the V-shaped structure at the flanging end of the workpiece to be processed is provided on the side of the third forming block.

[0026] As a further description of the above technical solution:

[0027] A number of support seats are provided on the top of the lower die base, and limiting support feet corresponding to the support seats are provided on the upper die base.

[0028] To sum up, due to the adoption of the above technical solution, the present utility model has the following

[0029] Advantages:

[0030] The internal flanging forming die of the present utility model is applicable to continuous die processing. Through the two-stage flanging forming station, the forming quality of the workpiece is ensured. When the die is closed, the forming punch assembly is inserted into the punch anti-side seat to clamp and position the connecting strip. The first forming block and the second forming block position one side of the top of the workpiece to be processed. The inserting knife moves synchronously with the upper die base. While the die is closed, the linkage jacking block is driven to laterally insert into the bottom of the workpiece to be processed and dock with the punch anti-side seat for bottom support. The pressing assembly is pressed to move towards the upper die base, so that the two punches are exposed, and cooperate with the corresponding forming blocks to perform synchronous internal flanging and secondary forming on the workpiece to be processed. After the processing is completed, the upper die base moves upward. The forming block and the punch perform relative displacement through the elastic cooperation between the upper die base and the pressing assembly to realize the demolding of the top of the workpiece. The inserting knife moves upward, the jacking block drives the third forming block to reset to realize the side core-pulling demolding of the workpiece, and the punch anti-side seat elastically jacks up, so that the workpiece is separated from the station, and the connecting strip can be conveyed to realize continuous die processing. The entire multi-station internal flanging forming process can realize workpiece positioning, secondary forming processing, and workpiece demolding and ejection operations only through the opening and closing of the die, improving the processing efficiency and quality. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 It is a schematic structural diagram of a side core-pulling internal flanging forming die for facilitating demolding.

[0033] Figure 2 It is a schematic structural diagram of the lower die base, the punch anti-side seat and the jacking block in a side core-pulling internal flanging forming die for facilitating demolding.

[0034] Figure 3An exploded view of the lower die base, the punch anti-side seat, and the counter-block in a side core-pulling and inward flanging forming die for facilitating demolding.

[0035] Figure 4 A structural schematic diagram of the upper die base, the forming punch assembly, and the insert knife in a side core-pulling and inward flanging forming die for facilitating demolding.

[0036] Figure 5 A sectional view of a side core-pulling and inward flanging forming die for facilitating demolding at the elevation where the axis in its length direction is located.

[0037] Figure 6 A sectional view of a side core-pulling and inward flanging forming die for facilitating demolding at the elevation where the axis in the length direction of the forming punch assembly is located.

[0038] Legend description:

[0039] 1. Lower die base; 11. First anti-side block; 12. Second anti-side block; 13. Lubricating plate; 14. Support seat; 2. Upper die base; 21. Limit support leg; 3. Punch anti-side seat; 31. Mounting seat; 32. Slot; 33. First elastic member; 4. Pressing and attaching assembly; 41. Second elastic member; 5. Forming punch assembly; 51. Positioning groove; 52. First forming block; 53. First punch; 54. Second forming block; 55. Second punch; 56. Positioning pin; 6. Insert knife; 61. Wedge-shaped guide block; 7. Counter-block; 71. Third forming block; 72. Connecting block; 73. Third elastic member; 74. Anti-side guide rail; 100. Workpiece to be processed; 110. Connecting strip. Specific implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] To make the purpose, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are a part of the embodiments of the present invention, rather than all the embodiments. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts fall within the scope of protection of the present invention.

[0043] It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0044] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "inner", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is habitually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0045] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Embodiment 1:

[0047] Please refer to Figure 1-6 , the present invention provides a technical solution: an inner flanging forming mold with side core pulling for easy demolding, including:

[0048] Lower die base 1;

[0049] Upper die base 2;

[0050] Punch anti-side seat 3, which is elastically inserted and arranged in the middle of the lower die base 1 through the mounting seat 31, and is used to support the connecting strip 110 between the workpieces 100 to be processed;

[0051] Pressing component 4, which is elastically slidably arranged at the bottom of the upper die base 2;

[0052] The forming punch assembly 5 has a positioning groove 51 at the bottom thereof and is plugged into the punch side protection seat 3, and includes a first forming block 52 and a second forming block 54 positioned on the bottom surface of the pressing assembly 4, and a first punch 53 and a second punch 55 that are inserted through the pressing assembly 4 and positioned on the upper die seat 2;

[0053] The inserting knife 6 is positioned at the bottom of the upper die seat 2, and a wedge-shaped guide block 61 is provided at the bottom;

[0054] The top block 7 is elastically slidably arranged on the lower die seat 1 along the punch anti-side seat 3, a wedge surface corresponding to the wedge guide block 61 is arranged on the outer side, and a third forming block 71 is arranged on the inner side. The third forming block 71 is inserted into the workpiece 100 to be processed which is bent into a U shape. The first forming block 52 and the first punch 53 form an inner flanging station, and the second forming block 54 and the second punch 55 form a secondary forming station.

[0055] The inner flanging forming die of the utility model can be applied to continuous die processing, and the forming quality of the workpiece is ensured by a two-stage flanging forming station. The mold is closed, the forming punch assembly is plugged into the punch side protection seat, the connecting material strip is clamped and positioned, and the first forming block and the second forming block are positioned on one side of the top of the workpiece to be processed; the inserter moves synchronously with the upper die seat, and while the mold is closed, the top block is linked to make it laterally insert into the bottom of the workpiece to be processed and dock with the punch side protection seat to support the bottom; the pressing assembly is pressed and moves toward the upper die seat, so that the two punches are exposed, and the corresponding forming blocks are used to synchronously perform inner flanging and secondary forming on the workpiece to be processed. After the processing is completed, the upper die seat moves up, and the forming block and the punch are relatively displaced through the elastic cooperation between the upper die seat and the pressing assembly to realize the demolding of the top of the workpiece, the inserter moves up, and the top block drives the third forming block to reset, so that the side core pulling demolding of the workpiece is realized, and the punch side protection seat is elastically lifted, so that the workpiece is separated from the station, and the connecting material strip can be transported, realizing continuous die processing. The entire multi-station internal flanging forming process can achieve workpiece positioning, secondary forming processing, and workpiece demoulding and ejection operations only through opening and closing mold drive, thereby improving processing efficiency and quality.

[0056] A positioning pin 56 is arranged in the positioning groove 51, a slot 32 corresponding to the positioning pin 56 is arranged on the punch anti-side seat 3, and a through hole corresponding to the positioning pin 56 is arranged on the connecting material strip 110, so as to further improve the clamping and positioning stability of the continuous material strip 110 on the punch anti-side seat 3 and the forming punch assembly 5.

[0057] The lower die base 1 is provided with an anti-side guide rail 74 slidably connected to the side of the top block 7, so as to improve the stability of the lateral sliding of the top block 7 under the guidance of the wedge surface and the elastic preload, and ensure the accuracy of the docking between the third forming block 71 and the workpiece.

[0058] The first punch 53 is arranged towards the side of the workpiece 100 to be processed, and a V-shaped pressing surface matching its flanging end is provided. The first punch 53 extends a primary forming notch at the end of the V-shaped pressing surface. The primary bending of the workpiece 100 to be processed is carried out through the V-shaped pressing surface, and the primary forming notch forms a negative angle structure for its inner flanging.

[0059] A secondary forming notch matching the flanging end of the workpiece 100 after inner flanging is provided on the side of the second punch 55. The primary forming notch, the secondary forming notch, and the surface of the corresponding third forming block 71 are matched.

[0060] A V-shaped supporting surface with an obtuse angle is provided on the side of the third forming block 71, corresponding to the V-shaped structure of the flanging end of the workpiece 100. Through secondary stamping, the quality of the inner flanging of the workpiece is guaranteed.

[0061] A number of supporting seats 14 are provided on the top of the lower die base 1, and limiting support feet 21 corresponding to the supporting seats 14 are provided on the upper die base 2 to limit the moving range and stroke of the upper and lower die bases. When the sensor on it is pressed, the closing die drive ends, avoiding overpressure on the workpiece and the die, which affects the forming quality and the service life of the die.

[0062] The working principle of a side core-pulling inner flanging forming die for facilitating demoulding in this embodiment includes: when the die is closed, the positioning groove 51 of the forming punch assembly 5 is inserted into the punch anti-side seat 3, and the positioning pin 56 passes through the workpiece through-hole and is inserted into the slot 31 to clamp and position the connecting strip 110. The first forming block 52 and the second forming block 54 position the top side of the workpiece 100 to be processed; the inserting knife 6 moves synchronously with the upper die base 2. While the die is being closed, the linkage push block 7 is driven to laterally insert into the bottom of the workpiece 100 to butt against the punch anti-side seat 3 for bottom support; the pressing component 4 is pressed to move towards the upper die base 2, so that the two punches are exposed, and the corresponding forming blocks are cooperated to carry out synchronous inner flanging and secondary forming on the workpiece 100 to be processed. After processing is completed, the upper die base 2 moves upward. The forming blocks and the punches are relatively displaced through the elastic cooperation between the upper die base 2 and the pressing component 4 to realize the demoulding of the top of the workpiece. The inserting knife 6 moves upward, the push block 7 drives the third forming block 71 to reset to realize the side core-pulling demoulding of the workpiece, and the punch anti-side seat 3 is elastically lifted, so that the workpiece is separated from the working position, and then the connecting strip 110 can be conveyed to realize continuous die processing.

[0063] Embodiment 2:

[0064] On the basis of the above-mentioned first embodiment, preferably, a first elastic member 33, a second elastic member 41, and a third elastic member 73 are respectively provided between the bottom of the punch anti-side seat 3 and the lower die base 1, between the pressing and attaching assembly 4 and the upper die base 2, and between the connecting block 72 at the bottom of the opposing block 7 and the mounting seat 31. The first elastic member 33, the second elastic member 41, and the third elastic member 73 are nitrogen springs. The above design can improve the service life of the elastic component compared with common springs.

[0065] Embodiment Three:

[0066] On the basis of the above-mentioned first embodiment, preferably, a first anti-side block 11 is provided on the side of the lower die base 1 where the inserting knife 6 is located. A lubricating plate 13 is provided on the side of the first anti-side block 11 facing the first anti-side block 11. The lower die base 1 is provided with a second anti-side block 12 on the sides of the first punch 53 and the second punch 55. The lubricating plate 13 is provided between the second anti-side block 12 and the corresponding first punch 53 or second punch 55 to reduce the stamping resistance of the punch and the inserting knife and improve the movement stability of the die structure.

[0067] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An inner flanging forming die with side core-pulling for easy demolding, characterized in that Including: Lower die base; Upper die base; Punch anti-side seat, which is elastically inserted through a mounting seat in the middle of the lower die base and is used to support the connecting strip between workpieces to be processed; Pressing component, which is elastically slidably arranged at the bottom of the upper die base; Forming punch component, the bottom of which is provided with a positioning groove corresponding to and inserted into the punch anti-side seat, including a first forming block and a second forming block positioned on the bottom surface of the pressing component and a first punch and a second punch passing through the pressing component and positioned on the upper die base; Inserting knife, which is positioned at the bottom of the upper die base and is provided with a wedge-shaped guide block at the bottom; Opposing block, which is elastically slidably arranged on the lower die base along the side of the punch anti-side seat, is provided with a wedge-shaped surface corresponding to the wedge-shaped guide block on the outside, and is provided with a third forming block on the inside. The third forming block is inserted into the workpiece to be processed bent into a U shape. The first forming block and the first punch form an inner flanging station, and the second forming block and the second punch form a secondary forming station.

2. The side core-pulling and inner flanging forming die facilitating demolding according to claim 1, wherein First elastic members, second elastic members, and third elastic members are respectively arranged between the bottom of the punch anti-side seat and the lower die base, between the pressing component and the upper die base, and between the connecting block at the bottom of the opposing block and the mounting seat. The first elastic member, the second elastic member, and the third elastic member are nitrogen springs.

3. A side-drawing core-pulling and inner-flanging forming die facilitating demolding according to claim 1, characterized in that Positioning pins are arranged in the positioning groove, slots corresponding to the positioning pins are arranged on the punch anti-side seat, and through holes corresponding to and inserted into the positioning pins are arranged on the connecting strip.

4. A side core-pulling and inner flanging forming die facilitating demolding according to claim 1, wherein, The lower die base is provided with a first anti-side block on the side of the inserting knife, a lubricating plate is arranged on the side of the first anti-side block facing the first anti-side block, the lower die base is provided with second anti-side blocks on the sides of the first punch and the second punch, and the lubricating plate is arranged between the second anti-side block and the corresponding first punch or second punch.

5. A side-drawing core-pulling and inner flanging forming die convenient for demolding according to claim 1, characterized in that, The lower die base is provided with an anti-side guide rail slidably connected to the side of the opposing block.

6. A side core-pulling and inside flanging forming die facilitating demolding according to claim 1, characterized in that, The first punch is provided with a V-shaped pressing surface matching its flanging end on the side facing the workpiece to be processed, and a primary forming notch extends at the end of the V-shaped pressing surface of the first punch.

7. A side core-pulling and inside flanging forming die facilitating demolding according to claim 6, characterized in that, The second punch is provided with a secondary forming notch matching the flanging end of the workpiece to be processed after inner flanging on the side, and the primary forming notch and the secondary forming notch match the surface of the corresponding third forming block.

8. The internal flanging forming die with side core-pulling facilitating demolding according to claim 1, characterized in that, The third forming block is provided with a V-shaped supporting surface with an obtuse angle corresponding to the V-shaped structure of the flanging end of the workpiece to be processed on the side.

9. A side-drawing core-pulling and inner-flanging forming die for facilitating demolding according to claim 1, characterized in that Several supporting seats are arranged on the top of the lower die base, and limiting support feet corresponding to the supporting seats are arranged on the upper die base.

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