Flat wire forming stamping die and stamping equipment

Abstract

The present invention relates to the field of stamping processing technology, and in particular to a flat wire forming stamping die and stamping equipment, including an upper die base and a lower die base adapted to the upper die base, and also including a guide block connected to the upper die base, a guide rail seat slidably connected to the guide block, and a sliding block connected to the lower die base, and a slide rail seat slidably connected to the sliding block; wherein the guide rail seat is arranged vertically and the slide rail seat is arranged horizontally, so that the upper die base moves in the vertical direction and the lower die base moves in the horizontal direction; after the upper die base and the lower die base are molded together, their contact position just offsets the bending position of the flat wire. The mold provided by the present invention is composed of the upper die base moving vertically downward and the lower die base moving horizontally, and the movements of the two are combined, so that the mold is in line contact friction when stamping and molding the flat wire, so as to avoid damage caused by extrusion and scratching, thereby effectively ensuring the quality of the flat wire and the performance of the flat wire motor. It has a simple structure, low cost and strong versatility.

Description

Technical Field

[0001] The invention relates to the technical field of stamping processing, and in particular to a flat wire forming stamping die and stamping equipment. Background Art

[0002] With the development of new energy vehicles, the proportion of flat wire motors in practical applications is increasing. At the same time, with the improvement of the voltage platform of the whole vehicle, the requirements for the insulation performance of flat wire enameled wire are also getting higher and higher. In the process of flat wire motor production, flat wire line forming is the process that causes the greatest damage to the line shape. Enameled wire with excessive damage will lead to poor insulation, which may cause safety accidents in serious cases.

[0003] In the prior art, flat wires are mainly made by stamping and forming, which refers to a processing method that uses a press and a die to apply external force to plates, strips, tubes and profiles to cause plastic deformation or separation, thereby obtaining a workpiece of the desired shape and size. Figure 1 As shown, the straight flat wire needs to be punched into a shape with secondary bends by a die. The die is as shown in FIG. Figure 2 As shown, it includes an upper die with a punch and a lower die for placing the flat wire. The specific working principle is that the lower die is fixed, the upper die quickly punches downward in the vertical direction, and pushes the flat wire to complete the deformation. It has a simple structure and high forming efficiency.

[0004] However, during the stamping deformation process, the stamping die Figure 3 As shown in the figure, friction and slip will occur between the initial contact surface and the final contact surface of the upper die and the flat wire, causing the enameled insulation layer of the flat wire to be damaged by the extrusion and scraping of the die. In addition, the friction deformation at the bending part is large, which will also cause serious damage, thus affecting the quality of the flat wire and the performance of the flat wire motor. Summary of the invention

[0005] In order to solve the problem that the flat wire is damaged by the extrusion and scraping of the mold during the stamping process in the above-mentioned prior art, the present invention provides a flat wire forming stamping mold, including an upper mold base and a lower mold base adapted to the upper mold base, and also including a guide block connected to the upper mold base, a guide rail seat slidably connected to the guide block, and a sliding block connected to the lower mold base, and a sliding rail seat slidably connected to the sliding block;

[0006] Among them, the guide rail seat is arranged vertically and the slide rail seat is arranged horizontally, so that the upper mold seat moves in the vertical direction under the action of the guide block and the guide rail seat, and the lower mold seat moves in the horizontal direction under the action of the sliding block and the slide rail seat; after the upper mold seat and the lower mold seat are closed, their contact position just coincides with the bending position of the flat wire.

[0007] In one embodiment, the guide rail seat and the slide rail seat are integrally formed.

[0008] In one embodiment, the upper die base and the lower die base are combined to form a material transfer space for the flat wire to be punched to pass through.

[0009] In one embodiment, the material transfer space includes a material transfer groove arranged at the stamping portion of the upper die base and a material transfer ridge arranged at the stamping portion of the lower die base, wherein the material transfer groove cooperates with the material transfer ridge.

[0010] In one embodiment, the surface roughness of the material trough is less than or equal to Ra1.6 μm.

[0011] In one embodiment, the material transfer space further includes a slot disposed at the rear of the lower die base and capable of just embedding the flat wire.

[0012] In one embodiment, it further includes an automatic pressing assembly located in the material transfer space and disposed on the guide block, the automatic pressing assembly including:

[0013] A material pressing column is slidably disposed vertically inside the guide block, and a through groove arranged in the vertical direction is formed in the middle of the material pressing column;

[0014] A spring is arranged inside the guide block, one end of which is connected to the pressing column and the other end of which is connected to the guide block;

[0015] A fixing pin is horizontally passed through the through slot and fixed on the guide block;

[0016] When the mold is closed and stamped, the pressure column slowly contacts the lower mold base and moves upward under the compression of the spring until the mold is fully closed. Finally, it is pressed against the flat wire of the lower mold base due to the reaction force of the compressed spring.

[0017] In one embodiment, it also includes a manual pressing assembly located in the material transfer space and fixed above the guide rail seat.

[0018] In one embodiment, the manual clamping assembly includes a fixing frame fixed on the guide rail seat and a connecting rod structure arranged inside the fixing frame; the upper end of the connecting rod structure is connected to a clamping handle, and the lower end is connected to a clamping block; by pressing down the clamping handle, the clamping block at the lower end of the connecting rod structure is driven to press against the flat wire of the lower mold seat.

[0019] The present invention also provides a stamping device, which adopts the flat wire forming stamping die as described above.

[0020] Based on the above, compared with the prior art, the flat wire forming stamping die provided by the present invention is composed of an upper die seat moving vertically downward and a lower die seat moving horizontally, and the two movements are combined, so that when the die is stamping and closing the flat wire, there is line contact friction, so as to avoid damage caused by extrusion and scratching, thereby effectively ensuring the quality of the flat wire and the performance of the flat wire motor. It has a simple structure, low cost and strong versatility.

[0021] Other features and beneficial effects of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other beneficial effects of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The positional relationships described in the drawings in the following description are based on the directions in which the components are drawn in the diagrams, unless otherwise specified.

[0023] Figure 1 A schematic diagram of the structure of the flat wire stamping used in the flat wire motor;

[0024] Figure 2 It is a schematic diagram of a common mold structure in the prior art;

[0025] Figure 3 for Figure 2 State diagram of the pressing process of the upper die in the middle die;

[0026] Figure 4 A schematic structural diagram of a flat wire forming stamping die provided by the present invention;

[0027] Figure 5 A structural exploded view of a flat wire forming stamping die provided by the present invention;

[0028] Figure 6 It is the state diagram of the upper die pressing process of the flat wire forming stamping die;

[0029] Figure 7 An overall stereoscopic diagram of a flat wire forming stamping die provided by the present invention;

[0030] Figure 8 The overall front view of a flat wire forming stamping die provided by the present invention;

[0031] Fig. 9 An overall side view of a flat wire forming stamping die provided by the present invention;

[0032] Fig.10 An overall exploded view of a flat wire forming stamping die provided by the present invention;

[0033] Fig.11 It is a structural schematic diagram of the automatic clamping assembly and the guide block.

[0034] Reference numerals:

[0035] 10-upper die seat; 20-lower die seat; 41-guide block; 42-guide rail seat; 51-sliding block; 52-slide rail seat; 30-material passing space; 31-material passing trough; 32-material passing ridge; 60-automatic clamping assembly; 61-pressing column; 61a-through groove; 62-spring; 63-fixing pin; 70-manual clamping assembly; 71-fixing frame; 72-connecting rod structure; 73-clamping handle; 74-clamping block. DETAILED DESCRIPTION

[0036] In order 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 below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments; the technical features designed in different implementation modes of the present invention described below can be combined with each other as long as they do not conflict with each other; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that all terms (including technical terms and scientific terms) used in the present invention have the same meanings as those generally understood by ordinary technicians in the field to which the present invention belongs, and should not be understood as limitations on the present invention; it should be further understood that the terms used in the present invention should be understood to have the same meanings as these terms in the context of this specification and in the relevant fields, and should not be understood in an idealized or overly formal sense, unless explicitly defined in this invention.

[0038] The present invention provides a flat wire forming stamping die, comprising an upper die base 10 and a lower die base 20 matched with the upper die base 10, and further comprising a guide block 41 connected to the upper die base 10, a guide rail base 42 slidably connected to the guide block 41, and a sliding block 51 connected to the lower die base 20, and a slide rail base 52 slidably connected to the sliding block 51; wherein the guide rail base 42 is arranged vertically and the slide rail base 52 is arranged horizontally, so that the upper die base 10 moves in the vertical direction under the action of the guide block 41 and the guide rail base 42, and the lower die base 20 moves in the horizontal direction under the action of the sliding block 51 and the slide rail base 52; after the upper die base 10 and the lower die base 20 are molded together, their contact position just counteracts the bending position of the flat wire.

[0039] When implementing it, Figure 4 , 5As shown in Figures 6 and 7, the stamping die includes an upper die base 10 and a lower die base 20, wherein the mold shape of the upper die base 10 and the lower die base 20 should be consistent with the shape of the flat wire to be made. The stamping die also includes a guide block 41 and a guide rail seat 42, wherein the guide rail seat 42 is arranged vertically, and the guide block 41 is fixed to the upper die base 10 by a detachable or non-detachable connection, such as one or more of threaded connection, snap connection, pin connection, welding, and riveting. The guide block 41 cooperates with the guide rail seat 42, and under the restriction of the guide rail seat 42, the guide block 41 can move along the guide rail seat 42 toward the lower die base 20. It should be understood that the guide block 41 can be directly connected to one of the power sources such as a cylinder, an electric cylinder, a motor, etc. through a T-slot set on the top, and can also be indirectly connected to one of the power sources such as a cylinder, an electric cylinder, a motor, etc. through a transmission mechanism such as a screw nut mechanism, a synchronous belt mechanism, a gear mechanism, a connecting rod mechanism, etc.

[0040] Similarly, it also includes a sliding block 51 and a slide rail seat 52, wherein the slide rail 52 is arranged horizontally, and the sliding block 51 is fixed to the lower mold base 20 by a detachable or non-detachable connection, such as one or more of threaded connection, snap connection, pin connection, welding, and riveting. The sliding block 51 cooperates with the slide rail seat 52, and under the restriction of the slide rail seat 52, the sliding block 51 can move along the slide rail seat 52 to the horizontal direction where the upper mold base 10 is located. It should be understood that the sliding block 51 can be directly connected to one of the power sources such as a cylinder, an electric cylinder, a motor, etc. through a T-slot set at the end, and can also be indirectly connected to one of the power sources such as a cylinder, an electric cylinder, a motor, etc. through a transmission mechanism such as a screw nut mechanism, a synchronous belt mechanism, a gear mechanism, a connecting rod mechanism, etc.

[0041] Preferably, the guide rail seat 42 and the slide rail seat 52 are integrally formed.

[0042] When implementing it, Fig.10 As shown, the guide rail seat 42 and the slide rail seat 52 are integrally formed according to the design of cooperation with each structure, wherein the guide rail seat 42 is arranged at the top and the slide rail seat 52 is arranged at the bottom. The guide rail seat 42 has a groove extending downward, which is used to limit the guide block 41 from sliding in the vertical direction, and the slide rail seat 52 has a groove extending horizontally, which is used to limit the sliding block 51 from sliding in the horizontal direction. The above arrangement can effectively save costs and reduce assembly time.

[0043] Preferably, the upper die base 10 and the lower die base 20 are combined to form a material passing space 30 for the flat wire to be punched to pass through.

[0044] When implementing it, Figure 5As shown, the upper die base 10 and the lower die base 20, in the mold closing state, will form a feeding space 30 for the flat wire to be punched to pass through. The height of the feeding space 30 should match the height of the flat wire so that the flat wire can sink into the feeding space 30 to ensure precise mold closing and bending, while also preventing the flat wire from being flattened in height.

[0045] Preferably, the material transfer space 30 includes a material transfer groove 31 provided at the stamping portion of the upper die base 10 and a material transfer ridge 32 provided at the stamping portion of the lower die base 20 , wherein the material transfer groove 31 cooperates with the material transfer ridge 32 .

[0046] When implementing it, Figure 7 , 8 As shown in Figures 9 and 10, the depth and width of the feed groove 31 and the feed ridge 32 depend on the height and width of the flat wire. Specifically, the feed groove 31 and the feed ridge 32 are arranged at the stamping position, and their specific shapes should be consistent with the shape obtained by stamping, and the sum of the heights of the feed ridge 32 and the flat wire is the depth of the feed groove 31. Preferably, the open end of the feed groove 31 is rounded, which can effectively prevent the edge of the flat wire from being worn during stamping. As a preferred solution, the flat wire can be manually fed into the feed space 30, and can also be fed into the feed space 30 by an electric push rod mechanism or other feeding mechanism.

[0047] Preferably, the surface roughness of the feed groove 31 is less than or equal to Ra1.6 μm, so as to ensure smooth contact between the flat wire in the feed groove 31 and the feed ridge 32 , and effectively avoid indentations and scratches caused by mutual friction of the flat wire during the stamping and die closing process.

[0048] Preferably, the material transfer space 30 further includes a slot 33 which is arranged at the rear of the lower die base 20 and can just fit the flat wire into.

[0049] In specific implementation, the depth and width of the slot 33 should be able to completely accommodate the flat wire to be punched. As a preferred solution, the flat wire can be manually fed into the feeding space 30 and limited on the slot 33, or the flat wire can be fed into the slot 33 by an electric push rod mechanism or other feeding mechanism.

[0050] Preferably, it also includes an automatic clamping component 60 located in the material transfer space 30 and arranged on the guide block 41, and the automatic clamping component 60 includes: a pressing column 61, which is slidably vertically arranged inside the guide block 41, and a through groove 61a arranged along the vertical direction is opened in the middle of the pressing column 61; a spring 62, which is arranged inside the guide block 41, one end of which is connected to the pressing column 61, and the other end is connected to the guide block 41; a fixing pin 63, which passes through the through groove 61a horizontally and is fixed on the guide block 41; when the mold is closed and stamped, the pressing column 61 slowly contacts the lower mold base 20, and moves upward under the compression of the spring 62 to complete mold closing, and finally presses against the flat wire of the lower mold base 20 due to the reaction force of the compressed spring 62.

[0051] When implementing it, Fig.11 As shown, the working principle of the automatic clamping assembly 60 is that when no stamping is performed, the spring 62 is relaxed, and the press column 61 is suspended on the guide block 41 under the restriction of the spring 62 and the fixing pin 63; when the die is closed and stamped, the press column 61 slowly contacts the lower die seat 20, and then moves upward to complete die closing under the compression of the spring 62. Since it is located in the material passing space 30, the press column 61 will just press against the flat wire of the lower die seat 20 due to the reaction force of the compressed spring 62. Through the above structure, the flat wire being stamped can be effectively pressed to prevent it from bouncing, thereby ensuring the stability of stamping.

[0052] It should be noted that in order to consider the rationality of the distribution of the structure, the present solution sets the automatic clamping assembly 60 on the guide block 41, and those skilled in the art can set the automatic clamping assembly 60 to a position that follows the stamping movement of the upper die base 10 and can press the flat wire during mold closing and stamping according to actual structural requirements.

[0053] Preferably, it also includes a manual pressing assembly 70 located at the material transfer space 30 and fixed above the guide rail seat 42. The manual pressing assembly 70 can adopt a screw nut mechanism and a connecting rod mechanism to practice up and down movement and pressing.

[0054] Preferably, if Fig.10 As shown, the manual pressing assembly 70 includes a fixing frame 71 fixed on the guide rail seat 42 and a connecting rod structure 72 arranged inside the fixing frame 71; the upper end of the connecting rod structure 72 is connected to a pressing handle 73, and the lower end is connected to a pressing block 74; by pressing the pressing handle 73 downward, the pressing block 74 at the lower end of the connecting rod structure 72 is driven to press against the flat wire of the lower die seat 20. Thus, the flat wire being punched is effectively pressed to prevent it from bouncing up, thereby ensuring the stability of punching.

[0055] The present invention also provides a stamping device, which adopts the flat wire forming stamping die as described above.

[0056] As a preferred solution, the stamping equipment can be configured to have: a cutting mechanism for cutting the flat wire, a conveying and inserting mechanism for conveying the cut flat wire into the stamping die using the flat wire forming stamping die as described above, a conveying and removing mechanism for removing the stamped flat wire after the stamping is completed, etc.

[0057] Furthermore, in the production line, from the production and processing of the flat wire to the completion of the stamping, and then to the assembly of the stamped flat wire into the motor, the flat wire forming stamping die can be applied to part or all of the motor production lines.

[0058] In summary, compared with the prior art, the flat wire forming stamping die provided by the present invention has a simple structure, low cost, and is applicable to materials of different stamping shapes, and has strong versatility. It can also effectively ensure that the surface of the stamped flat wire will not be damaged, thereby effectively ensuring the quality of the flat wire and the performance of the flat wire motor.

[0059] In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the present invention can be improved in only one or several aspects, without having to solve all the technical problems listed in the prior art or background technology at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation on the claim.

[0060] Although the terms such as upper die seat, lower die seat, material transfer space, material transfer slot, card slot, guide block, sliding block, material transfer ridge, guide rail seat, slide rail seat, automatic clamping assembly, material pressing column, through slot, spring, fixing pin, manual clamping assembly, fixing frame, connecting rod structure, clamping handle, clamping block, etc. are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention; the terms "first", "second", etc. (if any) in the description and claims of the embodiments of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flat wire forming stamping die, characterized in that: The invention comprises an upper die base (10) and a lower die base (20) matched with the upper die base (10), and also comprises a guide block (41) connected to the upper die base (10), a guide rail base (42) slidably connected to the guide block (41), a sliding block (51) connected to the lower die base (20), and a sliding rail base (52) slidably connected to the sliding block (51); The guide rail seat (42) is arranged vertically and the slide rail seat (52) is arranged horizontally, so that the upper mold seat (10) moves in the vertical direction under the action of the guide block (41) and the guide rail seat (42), and the lower mold seat (20) moves in the horizontal direction under the action of the sliding block (51) and the slide rail seat (52); after the upper mold seat (10) and the lower mold seat (20) are molded together, their contact position just abuts against the bending position of the flat wire.

2. The flat wire forming stamping die according to claim 1, characterized in that: The guide rail seat (42) and the slide rail seat (52) are integrally formed.

3. The flat wire forming stamping die according to claim 1, characterized in that: The upper die base (10) and the lower die base (20) are combined to form a material passing space (30) for the flat wire to be punched to pass through.

4. The flat wire forming stamping die according to claim 3, characterized in that: The material transfer space (30) comprises a material transfer groove (31) arranged at the stamping position of the upper die base (10) and a material transfer ridge (32) arranged at the stamping position of the lower die base (20), wherein the material transfer groove (31) cooperates with the material transfer ridge (32).

5. The flat wire forming stamping die according to claim 4, characterized in that: The surface roughness of the material trough (31) is less than or equal to Ra1.6 μm.

6. The flat wire forming stamping die according to claim 4, characterized in that: The material transfer space (30) further comprises a slot (33) which is arranged at the rear of the lower die base (20) and can just fit the flat wire into the slot.

7. The flat wire forming stamping die according to claim 3, characterized in that: The invention also includes an automatic pressing assembly (60) located in the material transfer space (30) and arranged on the guide block (41), wherein the automatic pressing assembly (60) includes: A material pressing column (61) is slidably disposed vertically inside the guide block (41), and a through groove (61a) arranged in the vertical direction is formed in the middle of the material pressing column (61); A spring (62) is arranged inside the guide block (41), one end of which is connected to the pressing column (61) and the other end of which is connected to the guide block (41); A fixing pin (63) is horizontally passed through the through slot (61a) and fixed on the guide block (41); When the die is closed and stamped, the pressing column (61) slowly contacts the lower die base (20) and moves upward under the compression of the spring (62) to complete die closing, and finally presses against the flat wire of the lower die base (20) due to the reaction force of the compressed spring (62).

8. The flat wire forming stamping die according to claim 3, characterized in that: It also includes a manual pressing assembly (70) located in the material transfer space (30) and fixed above the guide rail seat (42).

9. The flat wire forming stamping die according to claim 8, characterized in that: The manual clamping assembly (70) comprises a fixing frame (71) fixed on the guide rail seat (42) and a connecting rod structure (72) arranged inside the fixing frame (71); the upper end of the connecting rod structure (72) is connected to a clamping handle (73), and the lower end is connected to a clamping block (74); by pressing down the clamping handle (73), the clamping block (74) at the lower end of the connecting rod structure (72) is driven to press against the flat wire of the lower die seat (20).

10. A stamping device, characterized in that: A flat wire forming stamping die as described in any one of claims 1 to 9 is used.

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