Punching device capable of guaranteeing coaxiality of overlapped punching operation of aluminum parts

Abstract

The invention discloses a punching device capable of guaranteeing the coaxiality of overlapped punching operation of aluminum parts. The punching device comprises a lower die assembly, an upper die assembly, a wedge assembly and a workpiece pressing assembly. The aluminum part is pressed through the workpiece pressing assembly, and the bent faces of the aluminum part are arranged between the wedge assembly and the workpiece pressing assembly after being overlapped with each other. The end, matched with the workpiece pressing assembly, of the wedge assembly is provided with a punching needle moving in the horizontal direction, and the upper die assembly drives the wedge assembly to move in the horizontal direction so as to drive the punching needle to punch the two bent faces at the same time. According to the device, opening and closing of the upper die and the lower die are used for driving the wedge assembly to horizontally move so as to drive the punching needle to horizontally move, the workpiece pressing assembly is used for pressing the aluminum part in the vertical direction, then the wedge assembly and the workpiece pressing assembly are used for pressing the bent faces of the aluminum part in the horizontal direction, and the punching needle is used for synchronously punching the two bent faces; the device can achieve one-time punching, the coaxiality meets the technological requirement, manpower and material resources are saved, and the product quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of punching aluminum parts for new energy vehicles, and in particular to a punching device suitable for lightweight design of new energy vehicles and capable of ensuring the coaxiality of overlapping punching operations of aluminum parts. Background Art

[0002] At present, the lightweighting of body parts of new energy vehicles is the mainstream trend. Under the premise of ensuring the strength and safety performance of the vehicle, lightweighting can reduce the curb weight of the vehicle as much as possible, thereby improving the vehicle's power, reducing fuel consumption, and reducing exhaust pollution. Therefore, many aluminum parts are used in the body parts. In order to ensure the strength, the riveting process is basically adopted between aluminum parts. Therefore, the innovation of automobile mold structure corresponding to aluminum parts has also been born.

[0003] At present, the coaxiality of the riveted bottom holes of aluminum parts of the car body is a key research direction. In the existing technology, for punching holes in bent parts, holes are generally punched out on each bending surface, and then the coaxiality of the holes on the two bending surfaces is ensured by adjusting the bending angle and shifting the holes. This processing requires repeated debugging many times, which seriously affects the processing quality, wastes manpower and material resources, and cannot fully guarantee the coaxiality requirements of the workpiece.

[0004] Therefore, based on the above technical problems, technicians in this field urgently need to develop a punching device suitable for the lightweight design of new energy vehicles and capable of ensuring the coaxiality of overlapping punching operations of aluminum parts. Summary of the invention

[0005] The purpose of the present invention is to provide a punching device suitable for the lightweight design of new energy vehicles and capable of ensuring the coaxiality of overlapping punching operations of aluminum parts. The upper die assembly drives the movement of the inclined wedge assembly of the lower die assembly to drive the punch needle to move in the horizontal direction, and synchronously punches the two bending surfaces of the bent part to meet the punching coaxiality requirements, and the punching is formed in one time, which saves manpower and material resources and improves the operation quality.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention discloses a punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts, the punching device comprising:

[0008] A lower die assembly and an upper die assembly;

[0009] The upper part of the lower die assembly is integrated with an inclined wedge assembly, and the front side of the upper part of the lower die assembly is provided with a workpiece clamping assembly;

[0010] The aluminum part is pressed by the workpiece pressing assembly, and the bent surfaces of the aluminum part overlap each other and are placed between the angled wedge assembly and the workpiece pressing assembly;

[0011] The inclined wedge assembly cooperates with the workpiece clamping assembly at one end and has a punch needle that moves in the horizontal direction. The upper die assembly drives the inclined wedge assembly to move in the horizontal direction to drive the punch needle to punch holes on the two bending surfaces at the same time.

[0012] Further, the lower mold assembly includes:

[0013] A lower support plate supported at the bottom;

[0014] A lower foot fixed to the lower support plate; and

[0015] A lower die base is supported on the lower pad foot.

[0016] Furthermore, the upper mold assembly includes:

[0017] Upper die holder; and

[0018] A lower pad is assembled and fixed to the lower surface of the upper die seat, a positioning key is provided between the lower pad and the lower die seat, and the lower pad is assembled and fixed by bolts;

[0019] The lower surface of the lower pad is connected with a driving block, and the front side of the lower part of the driving block has a driving inclined surface.

[0020] Furthermore, the angled wedge assembly comprises:

[0021] An inclined wedge block base, the inclined wedge block base is fixed to the lower die base; and

[0022] An inclined wedge block movably connected to the inclined wedge block base, wherein a reset mechanism is connected between the inclined wedge block and the inclined wedge block base;

[0023] The position where the inclined wedge block cooperates with the driving block is set on the driven inclined surface that cooperates with the driving inclined surface;

[0024] The driving block drives the angled wedge block to move in the horizontal direction through the cooperation between the driving inclined surface and the driven inclined surface.

[0025] Furthermore, a punch pin fixing block is provided at one end of the inclined wedge block facing the workpiece clamping assembly, and a punch pin fixing block pad is installed between the punch pin fixing block and the inclined wedge block;

[0026] A steel unloading block is provided at the front end of the punch pin fixing block;

[0027] The punching needle fixing block and the steel unloading block are provided with the punching needle, and the processing end of the punching needle extends to the front side of the steel unloading block.

[0028] Furthermore, the workpiece clamping assembly comprises:

[0029] A lower mold plate fixed to the lower mold base, wherein both the lower mold base and the lower mold plate are provided with a waste channel;

[0030] An upper stripper plate movably connected to the upper die base via a nitrogen spring driver; and

[0031] An upper stripper plate insert which is assembled and fixed to the lower surface of the upper stripper plate and cooperates with the lower template;

[0032] The upper die base drives the upper stripper plate and the upper stripper plate insert to move in the vertical direction through the nitrogen spring driving member, and a guide mechanism is provided between the upper die base and the upper stripper plate;

[0033] The upper stripper plate insert and the lower template jointly clamp the aluminum part, and the two bent surfaces of the aluminum part extend between the steel stripper block and the lower template and are clamped by the steel stripper block and the lower template.

[0034] Furthermore, a punching die sleeve is provided at the position where the lower template cooperates with the punch needle;

[0035] When the punching needle moves forward in the horizontal direction and performs punching operation, the front end of the punching needle passes through the punching die sleeve and extends into the waste channel;

[0036] The waste generated by the punching operation of the two bending surfaces is transported into the waste channel through the punching needle.

[0037] Furthermore, a side punch waste crusher is provided at the upper end of the waste channel of the lower template;

[0038] The crushing end of the side punch waste crusher is close to the end of the punch needle, so as to impact the waste at the end of the punch needle into the waste channel and transport it to the bottom of the device along the waste channel.

[0039] Furthermore, a waste collection box is provided on the lower support plate;

[0040] The waste collection box is located at the lower square of the waste channel and collects the waste transported by the waste channel.

[0041] In the above technical solution, the present invention provides a punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts, which has the following beneficial effects:

[0042] The punching device of the present invention utilizes the opening and closing of the upper and lower molds to drive the horizontal movement of the inclined wedge assembly to drive the horizontal movement of the punch needle, and utilizes the workpiece clamping assembly to clamp the aluminum part in the vertical direction, and then uses the inclined wedge assembly and the workpiece clamping assembly to clamp the bending surface of the aluminum part in the horizontal direction, and uses the punch needle to synchronously punch the two bending surfaces. The device can realize one-time punching, and the coaxiality meets the process requirements, saving manpower and material resources, and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0044] Figure 1 A schematic structural diagram of a first process of an aluminum part of a punching device capable of ensuring the coaxiality of overlapping punching operations of an aluminum part provided by an embodiment of the present invention;

[0045] Figure 2 A schematic structural diagram of the second process of an aluminum part of a punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts provided by an embodiment of the present invention;

[0046] Figure 3 A schematic structural diagram of the third process of an aluminum part of a punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts provided by an embodiment of the present invention;

[0047] Figure 4 A schematic diagram of the structure of a punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts provided by an embodiment of the present invention;

[0048] Figure 5 A partially enlarged view of the punching operation of two bent surfaces of an aluminum part provided by a punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts provided in an embodiment of the present invention.

[0049] Description of reference numerals:

[0050] 10. Aluminum part; 11. First bending surface; 12. Second bending surface;

[0051] 1. Lower die assembly; 2. Upper die assembly; 3. Wedge assembly; 4. Workpiece clamping assembly; 5. Waste;

[0052] 101, lower support plate; 102, lower pad; 103, lower die base; 104, lower die plate; 105, waste channel; 106, waste collection box;

[0053] 201, upper die seat; 202, upper pad; 203, positioning key; 204, driving block; 205, guide mechanism; 206, driving inclined plane;

[0054] 301, inclined wedge block; 302, inclined wedge block base; 303, reset mechanism; 304, driven inclined surface; 305, punch pin fixing block pad; 306, punch pin fixing block; 307, punch pin; 308, steel unloading block;

[0055] 401, nitrogen spring driving part; 402, upper stripper plate; 403, upper stripper plate insert; 404, punching die sleeve; 405, side punch die waste crusher. DETAILED DESCRIPTION

[0056] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0057] See also Figures 1 to 5 As shown;

[0058] This embodiment discloses a punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts, the punching device comprising:

[0059] A lower mold assembly 1 and an upper mold assembly 2;

[0060] An inclined wedge assembly 3 is integrated on the upper part of the lower die assembly 1, and a workpiece clamping assembly 4 is arranged on the front side of the upper part of the lower die assembly 1;

[0061] The aluminum part 10 is pressed by the workpiece pressing assembly 4, and the bent surfaces of the aluminum part 10 overlap each other and are placed between the angled wedge assembly 3 and the workpiece pressing assembly 4;

[0062] The wedge assembly 3 cooperates with the workpiece clamping assembly 4 and has a punch 307 that moves in the horizontal direction at one end. The upper die assembly 2 drives the wedge assembly 3 to move in the horizontal direction to drive the punch 307 to punch holes on the two bending surfaces at the same time.

[0063] Specifically, the present embodiment discloses a punching device capable of punching two bent surfaces of an aluminum part 10 at the same time. Since the bent surfaces are folded and overlapped before synchronous punching, the coaxiality requirement of the punching of the two bent surfaces is met. The punching device of the present embodiment is mainly a mold, which is an upper mold assembly 2 and a lower mold assembly 1, and an inclined wedge assembly 3 is arranged between the two. The inclined wedge assembly 3 can be moved in the horizontal direction by the upper mold assembly 2, and a punching needle 307 is arranged in the horizontal direction. When the inclined wedge assembly 3 moves horizontally, the punching needle 307 can be used to perform synchronous punching operations on the two bent surfaces.

[0064] In addition, in order to fix the aluminum part 10 and ensure the punching accuracy of the punch needle 307, the device of this embodiment is provided with a workpiece clamping assembly 4 on one side relative to the inclined wedge assembly 3; and the workpiece clamping assembly 4 is divided into two clamping operations, namely, the workpiece clamping assembly 4 and the lower die assembly 1 together clamp the main body of the aluminum part 10, and the two bending surfaces of the aluminum part 10 extend between the lower die assembly 1 and the inclined wedge assembly 3, and the two bending surfaces are clamped by the inclined wedge assembly 3 and the lower die assembly 1, and finally the punching operation is performed.

[0065] Preferably, the lower mold assembly 1 of this embodiment includes:

[0066] A lower support plate 101 supported at the bottom;

[0067] A lower foot 102 fixed to the lower support plate 101; and

[0068] The lower die base 103 is supported by the lower foot 102 .

[0069] Secondly, the upper mold assembly 2 of this embodiment includes:

[0070] Upper die holder 201; and

[0071] A lower pad 202 is assembled and fixed to the lower surface of the upper die base 201, and a positioning key 203 is provided between the lower pad 202 and the lower die base 201, and they are assembled and fixed by bolts;

[0072] The lower surface of the lower pad 202 is connected to a driving block 204 , and the front side of the lower portion of the driving block 204 has a driving inclined surface 206 .

[0073] First, this embodiment further defines the structure of the lower mold assembly 1 and the upper mold assembly 2 , wherein the lower mold assembly 1 is a structurally supported contact, and the upper mold assembly 2 can reciprocate up and down relative to the lower mold assembly 1 .

[0074] Preferably, the angled wedge assembly 3 of this embodiment includes:

[0075] An inclined wedge block base 302, the inclined wedge block base 302 is fixed to the lower die base 103; and

[0076] An inclined wedge block 301 movably connected to an inclined wedge block base 302, and a reset mechanism 303 is connected between the inclined wedge block 301 and the inclined wedge block base 302;

[0077] The position where the inclined wedge block 301 cooperates with the driving block 204 is set on the driven inclined surface 304 that cooperates with the driving inclined surface 206;

[0078] The driving block 204 drives the inclined wedge block 301 to move in the horizontal direction through the cooperation between the driving inclined surface 206 and the driven inclined surface 304 .

[0079] In addition, a punch pin fixing block 306 is provided at one end of the inclined wedge block 301 facing the workpiece clamping assembly 4 of this embodiment, and a punch pin fixing block pad 305 is installed between the punch pin fixing block 306 and the inclined wedge block 301;

[0080] A steel discharge block 308 is provided at the front end of the punch pin fixing block 306;

[0081] Punching needles 307 are inserted through the punching needle fixing block 306 and the steel unloading block 308 , and the processing end of the punching needle 307 extends to the front side of the steel unloading block 308 .

[0082] This embodiment further defines the structure of the bevel wedge assembly 3, which integrates the bevel wedge block 301 into the lower die base 103 through the bevel wedge block base 302. The bevel wedge block 301 cooperates with the driving block 204, and utilizes the bevel cooperation of the driving bevel 206 and the driven bevel 304 to convert the vertical movement of the driving block 204 into the horizontal movement of the bevel wedge block 301, thereby driving the front end punch needle 307 to move horizontally, thereby punching the two bending surfaces at the same time.

[0083] Preferably, the workpiece clamping assembly 4 of this embodiment includes:

[0084] A lower mold plate 104 fixed to the lower mold base 103, wherein both the lower mold base 103 and the lower mold plate 104 are provided with a waste channel 105;

[0085] An upper stripper plate 402 movably connected to the upper die base 201 via a nitrogen spring driver 401; and

[0086] An upper stripper plate insert 403 is assembled and fixed to the lower surface of the upper stripper plate 402 and cooperates with the lower template 104;

[0087] The upper die base 201 drives the upper stripper plate 402 and the upper stripper plate insert 403 to move in the vertical direction through the nitrogen spring driving member 401, and a guide mechanism 205 is provided between the upper die base 201 and the upper stripper plate 402;

[0088] The upper stripper plate insert 403 and the lower template 104 jointly clamp the aluminum part 10 , and the two bent surfaces of the aluminum part 10 extend between the steel stripper block 308 and the lower template 104 , and are clamped by the steel stripper block 308 and the lower template 104 .

[0089] Among them, a punching die sleeve 404 is provided at the position where the lower template 104 of this embodiment cooperates with the punch needle 307;

[0090] When the punching needle 307 moves forward in the horizontal direction and performs punching operation, the front end of the punching needle 307 passes through the punching die sleeve 404 and extends into the waste channel 105;

[0091] The waste 5 generated by the punching operation of the punching needle 307 on the two bending surfaces is transported to the waste channel 105 through the punching needle 307 .

[0092] The present embodiment further defines the structural composition of the workpiece clamping assembly 4, which is provided with an upper stripping plate 402 and an upper stripping plate insert 403 capable of reciprocating up and down movement in cooperation with the lower template 104, and its movement is mainly driven by a nitrogen spring driver 401, and in order to guide the upper stripping plate 402 and the upper stripping plate insert 403, a guiding mechanism 205 is provided in cooperation; the space between the upper stripping plate insert 403 and the lower template 104 of the present embodiment is the clamping space of the aluminum part 10, which mainly clamps the main body of the aluminum part 10, and the two bending surfaces of the aluminum part 10 extend between the inclined wedge block 301 and the lower template 104, and the two bending surfaces are clamped by the inclined wedge block 301 and the lower template 104, and finally punched by the punch needle 307.

[0093] In order to separate the waste generated when the punching needle 307 punches a hole from the punching needle 307, a side punch waste crusher 405 is provided at the upper end of the waste channel 105 of the lower template 104 of the present embodiment; the crushing end of the side punch waste crusher 405 is close to the end of the punching needle 307 to impact the waste 5 at the end of the punching needle 307 into the waste channel 105 and transport it along the waste channel 105 to the bottom of the device.

[0094] In order to collect the waste 5 , a waste collection box 106 is provided on the lower support plate 101 of the present embodiment; the waste collection box 106 is located in the lower square of the waste channel 105 and collects the waste 5 transported by the waste channel 105 .

[0095] In the above technical solution, the present invention provides a punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts, which has the following beneficial effects:

[0096] The punching device of the present invention utilizes the opening and closing of the upper and lower molds to drive the horizontal movement of the bevel assembly 3 to drive the horizontal movement of the punch needle 307, and utilizes the workpiece clamping assembly 4 to clamp the aluminum part 10 in the vertical direction, and then uses the bevel assembly 3 and the workpiece clamping assembly 4 to clamp the bending surface of the aluminum part 10 in the horizontal direction, and uses the punch needle 307 to synchronously punch the two bending surfaces. The device can realize one-time punching, and the coaxiality meets the process requirements, saving manpower and material resources, and improving product quality.

[0097] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts, characterized in that: The punching device comprises: A lower mold assembly (1) and an upper mold assembly (2); The upper part of the lower die assembly (1) is integrated with an inclined wedge assembly (3), and the front side of the upper part of the lower die assembly (1) is provided with a workpiece clamping assembly (4); The aluminum part (10) is pressed by the workpiece pressing assembly (4), and the bent surfaces of the aluminum part (10) overlap each other and are placed between the angled wedge assembly (3) and the workpiece pressing assembly (4); The inclined wedge assembly (3) cooperates with the workpiece clamping assembly (4) at one end thereof and has a punching needle (307) movable in the horizontal direction, and the upper die assembly (2) drives the inclined wedge assembly (3) to move in the horizontal direction to drive the punching needle (307) to punch holes in the two bending surfaces simultaneously.

2. The punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts according to claim 1 is characterized in that: The lower mold assembly (1) comprises: A lower support plate (101) supported at the bottom; A lower foot (102) fixed to the lower support plate (101); and A lower die base (103) is supported on the lower pad foot (102).

3. The punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts according to claim 2 is characterized in that: The upper mold assembly (2) comprises: An upper die seat (201); and A lower pad (202) is assembled and fixed to the lower surface of the upper die base (201), a positioning key (203) is provided between the lower pad (202) and the lower die base (201), and the lower pad (202) and the lower die base (201) are assembled and fixed by bolts; The lower surface of the lower pad (202) is connected to a driving block (204), and the front side of the lower portion of the driving block (204) has a driving inclined surface (206).

4. The punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts according to claim 3 is characterized in that: The angled wedge assembly (3) comprises: An inclined wedge block base (302), wherein the inclined wedge block base (302) is fixed to the lower die base (103); and An inclined wedge block (301) movably connected to the inclined wedge block base (302), wherein a reset mechanism (303) is connected between the inclined wedge block (301) and the inclined wedge block base (302); A driven inclined surface (304) that cooperates with the driving inclined surface (206) is provided at a position where the inclined wedge block (301) cooperates with the driving block (204); The driving block (204) drives the inclined wedge block (301) to move in a horizontal direction through the cooperation between the driving inclined surface (206) and the driven inclined surface (304).

5. The punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts according to claim 4 is characterized in that: A punch pin fixing block (306) is provided at one end of the inclined wedge block (301) facing the workpiece clamping assembly (4), and a punch pin fixing block pad (305) is installed between the punch pin fixing block (306) and the inclined wedge block (301); A steel discharge block (308) is provided at the front end of the punch pin fixing block (306); The punching needle (307) is inserted into the punching needle fixing block (306) and the steel unloading block (308), and the processing end of the punching needle (307) extends to the front side of the steel unloading block (308).

6. The punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts according to claim 5, characterized in that: The workpiece clamping assembly (4) comprises: A lower mold plate (104) fixed to the lower mold base (103), wherein both the lower mold base (103) and the lower mold plate (104) are provided with a waste channel (105); an upper stripping plate (402) movably connected to the upper die base (201) via a nitrogen spring driving member (401); and An upper stripper plate insert (403) is assembled and fixed to the lower surface of the upper stripper plate (402) and cooperates with the lower template (104); The upper die base (201) drives the upper stripping plate (402) and the upper stripping plate insert (403) to move in a vertical direction through the nitrogen spring driving member (401), and a guide mechanism (205) is provided between the upper die base (201) and the upper stripping plate (402); The upper stripping plate insert (403) and the lower template (104) jointly clamp the aluminum part (10), and the two bent surfaces of the aluminum part (10) extend between the steel stripping block (308) and the lower template (104), and are clamped by the steel stripping block (308) and the lower template (104).

7. The punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts according to claim 6, characterized in that: A punching die sleeve (404) is provided at a position where the lower template (104) cooperates with the punching needle (307); When the punching needle (307) moves forward in the horizontal direction and performs punching operation, the front end of the punching needle (307) passes through the punching die sleeve (404) and extends into the waste channel (105); The waste material (5) generated by the punching operation of the punching needle (307) on the two bending surfaces is transported into the waste material channel (105) through the punching needle (307).

8. The punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts according to claim 7, characterized in that: A side punch waste crusher (405) is provided at the upper end of the waste channel (105) of the lower mold plate (104); The crushing end of the side punch waste crusher (405) is close to the end of the punch needle (307) to impact the waste (5) at the end of the punch needle (307) into the waste channel (105) and transport it along the waste channel (105) to the bottom of the device.

9. The punching device capable of ensuring the coaxiality of overlapping punching operations of aluminum parts according to claim 8, characterized in that: A waste collection box (106) is provided on the lower support plate (101); The waste collection box (106) is located at the lower side of the waste channel (105) and collects the waste (5) transported by the waste channel (105).

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