CN216881459U - Flat wire forming stamping die and stamping equipment - Google Patents

Abstract

The utility model relates to the technical field of stamping processing, in particular to a flat wire forming stamping die and stamping equipment, which comprise an upper die holder, a lower die holder matched with the upper die holder, a guide block connected with the upper die holder and a guide rail seat connected with the guide block in a sliding manner; the guide rail seat is obliquely arranged at a certain angle along the vertical direction, the upper die seat obliquely moves downwards along the vertical direction at a certain angle under the action of the guide block and the guide rail seat to the die assembly of the upper die seat and the lower die seat, and the contact position of the upper die seat and the lower die seat is just abutted to the bending position of the flat wire. The die provided by the utility model moves downwards along the inclination angle from the upper die base to be matched with the lower die base, so that the die is in line contact friction when performing stamping and matching on the flat wire, the problem of damage caused by extrusion and scraping is avoided, and the quality of the flat wire and the performance of a flat wire motor are effectively ensured. The structure is simple, the cost is low, and the universality is strong.

Description

Flat wire forming stamping die and stamping equipment

Technical Field

The utility model relates to the technical field of stamping processing, in particular to a flat wire forming stamping die and stamping equipment.

Background

With the development of new energy automobiles, the occupation ratio of the flat-wire motor in practical application is higher and higher. Meanwhile, with the improvement of a voltage platform of the whole vehicle, the requirement on the insulating property of the flat wire enameled wire is higher and higher. In the process of manufacturing the flat wire motor, the line-type forming of the flat wire is a technological process with the largest damage to the line type. The damaged enameled wire can cause the condition of poor insulation, and can cause safety accident in serious cases.

In the prior art, the flat wire is mainly manufactured by a press forming process, wherein the press forming process is a processing and forming method for obtaining a workpiece with a required shape and size by applying external force to a plate, a strip, a pipe, a section and the like by a press machine and a die to generate plastic deformation or separation. As shown in fig. 1, a straight flat wire needs to be punched into a shape having a secondary bend by a die. The die is as shown in fig. 2, and comprises an upper die provided with a punch and a lower die used for placing the flat wire, the lower die is fixed according to a specific working principle, the upper die is rapidly punched downwards along the vertical direction, and the flat wire is pushed to complete deformation, so that the die is simple in structure and high in forming efficiency.

However, in the stamping deformation process of the stamping die, as shown in fig. 3, specifically, the thick line is added, the initial contact surface and the final contact surface of the upper die and the flat wire may generate friction slip, so that the enameled insulation layer of the flat wire is damaged by the extrusion and scraping of the die, and in addition, the friction deformation at the bending part is large, and also serious damage may be caused, thereby affecting the quality of the flat wire and the performance of the flat wire motor.

SUMMERY OF THE UTILITY MODEL

In order to solve the defect that the flat wire is extruded and scraped by a die and damaged in the stamping process in the prior art, the utility model provides a flat wire forming stamping die which comprises an upper die base, a lower die base matched with the upper die base, a guide block connected with the upper die base and a guide rail base in sliding connection with the guide block;

the guide rail seat is obliquely arranged at a certain angle along the vertical direction, the upper die seat obliquely moves downwards at a certain angle along the vertical direction under the action of the guide block and the guide rail seat to the die assembly of the upper die seat and the lower die seat, and the contact position of the upper die seat is just abutted to the bending position of the flat wire.

In one embodiment, the inclination angle of the guide rail seat is consistent with the bending angle of the flat wire.

In one embodiment, the upper die holder and the lower die holder are matched to form a material passing space for the flat wire to be punched to pass through.

In one embodiment, the material passing space comprises a material passing groove arranged at the stamping part of the upper die holder and a material passing convex ridge arranged at the stamping part of the lower die holder, wherein the material passing groove is matched with the material passing convex ridge; the material passing space further comprises a clamping groove arranged at the tail of the lower die holder.

In one embodiment, the surface roughness of the material passing groove is less than or equal to Ra1.6 μm.

In one embodiment, the die further comprises a limiting block arranged between the upper die holder and the lower die holder, wherein the limiting block is fixed on the lower die holder, and the height of the limiting block is flush with the height of the lower die holder so as to prevent the upper die holder from being over-pressurized.

In an embodiment, the automatic pressing device further comprises an automatic pressing assembly which is arranged at the material passing space and arranged on the guide block, and the automatic pressing assembly comprises:

the material pressing column is vertically arranged inside the guide block in a sliding mode, and a through groove arranged in the vertical direction is formed in the middle of the material pressing column;

the spring is arranged in the guide block, one end of the spring is connected with the material pressing column, and the other end of the spring is connected with the guide block;

the fixing pin horizontally penetrates through the through groove and is fixed on the guide block;

when the die assembly punching is carried out, the material pressing column is slowly contacted with the lower die holder, and moves upwards under the compression action of the spring until the die assembly is completed, and finally the material pressing column is pressed on the flat wire of the lower die holder due to the reaction force of the compression of the spring.

In one embodiment, the device further comprises a manual pressing assembly which is positioned at the material passing space and fixed above the guide rail seat.

In one embodiment, the tail of the lower die holder is further provided with a limiting assembly, and the limiting assembly comprises:

the limiting strip is arranged at the bottom of the lower die holder and can reciprocate along the feeding direction; the limiting strip is provided with a positioning through groove arranged along the feeding direction, and the outer side of the positioning through groove is also provided with a scale value;

the limiting rod is vertically arranged at the tail end of the limiting strip, and the flat wire penetrates in the feeding direction of the material passing space until the end part of the flat wire is abutted against the limiting rod;

and the adjusting pin penetrates through the positioning through groove, and the distance between the limiting rod and the lower die base is adjusted by rotating the adjusting pin and moving the limiting strip.

The utility model also provides a stamping device which adopts the flat wire forming stamping die.

Based on the above, compared with the prior art, the flat wire forming and stamping die provided by the utility model has the advantages that the upper die base moves downwards along a certain inclination angle to be matched with the lower die base, so that the die is in line contact friction when performing stamping and die matching on the flat wire, the damage problem caused by extrusion and scraping is avoided, and the quality of the flat wire and the performance of a flat wire motor are effectively ensured. The structure is simple, the cost is low, and the universality is strong.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts; in the following description, the drawings are illustrated in a schematic view, and the drawings are not intended to limit the present invention.

FIG. 1 is a schematic structural view of a flat wire punch forming used in a flat wire motor;

FIG. 2 is a schematic diagram of a conventional mold structure;

FIG. 3 is a state diagram of the process of pressing the upper mold of the mold shown in FIG. 2;

FIG. 4 is a schematic structural view of a flat wire forming and stamping die according to the present invention;

FIG. 5 is an exploded view of a stamping die for forming flat wires according to the present invention;

FIG. 6 is a state diagram of the upper die pressing process of the flat wire forming stamping die;

FIG. 7 is an overall perspective view of a flat wire forming stamping die provided in the present invention;

FIG. 8 is an overall front view of a flat wire forming and stamping die according to the present invention;

FIG. 9 is an overall side view of a flat wire forming stamping die according to the present invention;

FIG. 10 is an exploded view of a flat wire forming stamping die according to the present invention;

fig. 11 is a schematic structural view of the automatic pressing assembly and the guide block.

Reference numerals:

10 upper die holder 20 lower die holder 40 guide block

50 guide rail seat 31 passes silo 32 and passes material convex ridge

30 material passing space 33 clamping groove 21 limiting block

60 automatic pressing assembly 61 pressing column 61a through groove

62 spring 63 fixed pin 70 manual compression assembly

80 limiting component 81 limiting strip 81a positioning through groove

82 limiting rod 83 adjusting pin

Detailed Description

In order to make the objects, 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 with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; the technical features designed in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be noted that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, and are not to be construed as limiting the present invention; it will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The utility model provides a flat wire forming stamping die, which comprises an upper die holder 10, a lower die holder 20 matched with the upper die holder 10, a guide block 40 connected with the upper die holder 10 and a guide rail seat 50 connected with the guide block 40 in a sliding manner; the guide rail seat 50 is obliquely arranged at a certain angle along the vertical direction, and the upper die holder 10 obliquely moves downwards at a certain angle along the vertical direction under the action of the guide block 40 and the guide rail seat 50 until the upper die holder 10 and the lower die holder 20 are matched, so that the contact position of the upper die holder 10 and the lower die holder is just abutted against the bending position of the flat wire.

In specific implementation, as shown in fig. 4, 5, and 6, the stamping die includes an upper die holder 10 and a lower die holder 20, wherein the matched mold shape of the upper die holder 10 and the lower die holder 20 is adapted to the shape of the flat wire to be manufactured. The stamping die 10 further comprises a guide block 40 and a guide rail seat 50, wherein the guide block 40 and the upper die seat 10 are fixed in a detachable or non-detachable connection mode, for example, one or more of a threaded connection mode, a buckling connection mode, a pin connection mode, a welding mode and a riveting mode are adopted. The guide block 40 is matched with the guide rail seat 50 with a certain inclination angle, under the limitation of the guide rail seat 50, the guide block 40 can move downwards along the guide rail seat 50 in an inclined mode towards the direction of the lower die seat 20 to be matched with the lower die seat, and the contact position of the guide block is just offset with the bending position of the flat wire, so that the flat wire is subjected to line contact friction when being punched and matched with the die by the die, and the problem of damage caused by extrusion scraping is avoided.

Preferably, the rail seat 50 includes a rail portion at the top and a support portion at the bottom, which are integrally formed; wherein, the guide rail part is provided with a groove extending downwards, and the groove is used for limiting the guide block 40 to slide up and down; the support is used for placing the lower die holder 20. Through the arrangement, the cost can be effectively saved, and the assembly time is shortened.

It should be understood that the guide block 40 can be directly connected to one of the power sources such as the air cylinder, the electric cylinder, the motor, etc. through the T-shaped groove at the top, and can also be indirectly connected to one of the power sources such as the air cylinder, the electric cylinder, the motor, etc. through a transmission mechanism such as a lead screw nut mechanism, a synchronous belt mechanism, a gear mechanism, a link mechanism, etc.

Preferably, the inclination angle of the guide rail seat 50 is consistent with the bending angle of the flat wire, so as to ensure that the flat wire is subjected to line contact friction when the die is used for stamping and closing the flat wire. It should be noted that the inclination angle and the direction of the rail seat 50 are not limited to those shown in the drawings, and those skilled in the art can set the angle according to the actual bending angle of the flat wire to be processed, for example, the bending angle of the flat wire is 150 °, and the rail seat 50 should also be set to 150 ° in accordance with the bending angle.

Preferably, the upper die holder 10 and the lower die holder 20 are matched to form a material passing space 30 for the flat wire to be punched to pass through.

In specific implementation, as shown in fig. 5 and 7, the upper die holder 10 and the lower die holder 20 form a material passing space 30 for a flat wire to be punched to pass through in a die closing state, and the height of the material passing space 30 should be matched with the height of the flat wire, so that the flat wire is sunk into the material passing space 30, accurate die closing and bending are ensured, and the flat wire can be prevented from being flattened in height.

Preferably, the material passing space 30 comprises a material passing groove 31 arranged at the punching part of the upper die holder 10 and a material passing ridge 32 arranged at the punching part of the lower die holder 20, wherein the material passing groove 31 is matched with the material passing ridge 32; the material passing space 30 further comprises a clamping groove 33 arranged at the tail part of the lower die holder 20.

In specific implementation, as shown in fig. 5 and 7, the depth and the width of the material passing groove 31, the material passing ridge 32 and the clamping groove 33 depend on the height and the width of the flat wire. Specifically, the material passing groove 31 and the material passing ridge 32 are arranged at the punching part, the specific shape of the material passing groove 31 and the material passing ridge 32 is matched with the shape obtained by punching, and the height of the material passing ridge 32 and the flat wire is equal to the depth of the material passing groove 31. The depth and width of the slot 33 should be such that it can completely accommodate the flat wire to be stamped. Preferably, the open end of the material passing groove 31 is rounded, so that the edge of the flat wire can be effectively prevented from being worn during stamping. As a preferred scheme, the flat wire can be manually conveyed into the material passing space 30 and limited on the clamping groove 33, and the flat wire can be conveyed into the clamping groove 33 through an electric push rod mechanism or other feeding mechanisms.

Preferably, the surface roughness of the material passing groove 31 is less than or equal to Ra1.6 μm, so that the flat wire is ensured to be smoothly contacted in the material passing groove 31 and the material passing convex ridge 32, and the flat wire is effectively prevented from being rubbed with each other to generate indentation and scratch in the stamping and die assembly process.

Preferably, the die holder further comprises a limiting block 21 arranged between the upper die holder 10 and the lower die holder 20, wherein the limiting block 21 is fixed on the lower die holder 20 and has a height flush with that of the lower die holder 20 so as to prevent the upper die holder 10 from being overpressured.

In specific implementation, as shown in fig. 8, 9 and 10, in order to avoid excessive stamping of the upper die holder 10 and aggravate abrasion of the flat wire at the bent portion, the lower die holder 20 is provided with a limiting block 21 at a position of the stamped portion. The height of the limiting block 21 is flush with the height of the lower die holder 20, and after the die is assembled by stamping, the top of the limiting block 21 can abut against the bottom of the upper die holder 10, so that the upper die holder 10 is limited from further pressing down, and the device is effectively protected.

Preferably, the automatic pressing device 60 is arranged at the material passing space 30 and arranged on the guide block 40, and the automatic pressing device 60 comprises: the material pressing column 61 is vertically arranged inside the guide block 40 in a sliding manner, and a through groove 61a arranged along the vertical direction is formed in the middle of the material pressing column 61; a spring 62 arranged inside the guide block 40, one end of which is connected with the pressing column 61 and the other end of which is connected with the guide block 40; a fixing pin 63 horizontally passing through the through groove 61a and fixed on the guide block 40; when the die closing and punching are carried out, the material pressing column 61 is slowly contacted with the lower die holder 20 and moves upwards under the compression action of the spring 62 until the die is completely closed, and finally the material pressing column is pressed on the flat line of the lower die holder 20 due to the reaction force of the compression of the spring 62.

In specific implementation, as shown in fig. 11, the automatic pressing assembly 60 works on the principle that, in a state where no punching is performed, the spring is in a relaxed state, and the pressing column 61 is suspended on the guide block 40 under the restriction of the spring 62 and the fixing pin 63; during the clamping press, the plunger 61 is gradually brought into contact with the lower die holder 20 and then moved upward by the compression of the spring 62 until the clamping is completed. Because it is in the position of the overfeed space 30, the ram 61 will press against the flat line of the lower die holder 20 due to the reaction force of the spring 62. Through the structure, the flat wire which is being stamped can be effectively pressed, the flat wire is prevented from bouncing, and the stamping stability is ensured.

It should be noted that, in order to consider the distribution rationality of the structure, the present solution arranges the automatic pressing assembly 60 on the guide block 40, and a person skilled in the art can arrange the automatic pressing assembly 60 at a position which follows the punching movement of the upper die holder 10 and can press the flat wire during the die closing punching according to the actual structural requirements.

Preferably, a manual pressing assembly 70 is further included at the material passing space 30 and fixed above the rail seat 50.

During specific implementation, the manual pressing assembly 70 includes a fixing frame fixed on the guide rail seat 50 and a connecting rod pressing mechanism arranged inside the fixing frame, one end of the connecting rod pressing mechanism is connected with a pressing handle, the other end of the connecting rod pressing mechanism is connected with a pressing block, and the pressing handle is connected with the pressing block through upward pressing or downward pressing, so that the connecting rod pressing mechanism can drive the pressing block to press on the flat wire of the lower die holder 20, thereby effectively pressing the flat wire being punched, preventing the flat wire from bouncing up and ensuring the stability of punching.

Preferably, the tail of the lower die base 20 is further provided with a limiting assembly 80, and the limiting assembly 80 includes: the limiting strip 81 is arranged at the bottom of the lower die holder 20 and can reciprocate along the feeding direction; a positioning through groove 81a arranged along the feeding direction is formed in the limiting strip 81, and a scale value is further arranged on the outer side of the positioning through groove 81 a; the limiting rod 82 is vertically arranged at the tail end of the limiting strip 81, and the flat wire penetrates in the feeding direction of the material passing space 30 until the end part of the flat wire abuts against the limiting rod 82; and the adjusting pin 83 penetrates through the positioning through groove 81a, and the distance between the limiting rod 82 and the lower die base 20 is adjusted by rotating the adjusting pin 83 and moving the limiting strip 81.

In specific implementation, as shown in fig. 7, 8 and 10, the working principle is as follows: the limiting strip 81 is provided with scale values, the distance from the limiting rod 82 to the lower die holder 20 is converted according to the actual length of the flat wire and the required punching position, the adjusting pin 83 is loosened, the limiting strip 81 is adjusted to the converted distance position, and then the adjusting pin 83 is screwed. Finally, the flat wire penetrates along the feeding direction of the material passing space 30 until the tail end of the flat wire abuts against the limiting rod 82, namely, one end of the feeding direction is limited, so that the flat wire is stamped at a proper position. Through above-mentioned structure, can adapt to the flat line shaping of different specification and dimension requirements, need not to change the mould again, effectively improve the commonality of mould.

Preferably, according to the concept of the present embodiment, the manual adjustment mode of the limiting assembly 80 can be replaced by controlling the limiting bar 81 to move by a servo motor so as to control the limiting rod 82 to move to a suitable position, thereby realizing automatic operation.

The utility model also provides a stamping device, which adopts the flat wire forming stamping die.

As a preferable mode, the punching apparatus may be provided with: the cutting mechanism for cutting the flat wire adopts the flat wire forming and stamping die, a conveying and inserting mechanism for conveying the cut flat wire into the stamping die, a conveying and taking-out mechanism for taking out the punched flat wire after stamping, and the like.

Further, in the production line, the flat wire is manufactured, punched and then assembled into the motor through the stamping, and the flat wire forming and punching die can be applied to part or all of the motor production lines.

In summary, compared with the prior art, the flat wire forming and stamping die provided by the utility model has the advantages of simple structure, low cost and strong universality. And the surface of the stamped flat wire can be effectively prevented from being damaged by extrusion, so that the quality of the flat wire and the performance of a flat wire motor are effectively guaranteed.

In addition, it will be appreciated by those skilled in the art that, although there may be many problems with the prior art, each embodiment or aspect of the present invention may be improved only in one or several respects, without necessarily simultaneously solving all the technical problems listed in the prior art or in the background. It will be understood by those skilled in the art that nothing in a claim should be taken as a limitation on that claim.

Although terms such as upper die holder, lower die holder, material passing space, material passing groove, guide block, material passing convex ridge, clamping groove, guide rail holder, limiting block, automatic pressing component, material pressing column, through groove, spring, fixing pin, manual pressing component, limiting strip, positioning through groove, limiting rod, adjusting pin and the like are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention; the terms "first," "second," and the like in the description and in the claims, and in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a flat wire shaping stamping die which characterized in that: the die comprises an upper die holder (10), a lower die holder (20) matched with the upper die holder (10), a guide block (40) connected with the upper die holder (10) and a guide rail seat (50) in sliding connection with the guide block (40);

the guide rail seat (50) is obliquely arranged at a certain angle along the vertical direction, the upper die base (10) obliquely moves downwards at a certain angle along the vertical direction under the action of the guide block (40) and the guide rail seat (50) until the upper die base (10) and the lower die base (20) are matched, and the contact position of the upper die base is just abutted to the bending position of the flat wire.

2. The flat wire forming and stamping die according to claim 1, wherein: the inclination angle of the guide rail seat (50) is consistent with the bending angle of the flat wire.

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

4. The flat wire forming and stamping die according to claim 3, wherein: the material passing space (30) comprises a material passing groove (31) arranged at the stamping part of the upper die holder (10) and a material passing convex ridge (32) arranged at the stamping part of the lower die holder (20), wherein the material passing groove (31) is matched with the material passing convex ridge (32); the material passing space (30) further comprises a clamping groove (33) arranged at the tail part of the lower die holder (20).

5. The flat wire forming and stamping die according to claim 4, wherein: the surface roughness of the material passing groove (31) is less than or equal to Ra1.6 mu m.

6. The flat wire forming and stamping die according to claim 1, wherein: the die comprises an upper die base (10) and a lower die base (20), and is characterized by further comprising a limiting block (21) arranged between the upper die base (10) and the lower die base (20), wherein the limiting block (21) is fixed on the lower die base (20), and the height of the limiting block is flush with the height of the lower die base (20) so as to prevent the upper die base (10) from being over-pressed.

7. The flat wire forming and stamping die according to claim 3, further comprising an automatic pressing assembly (60) located at the material passing space (30) and disposed on the guide block (40), the automatic pressing assembly (60) comprising:

the material pressing column (61) is vertically arranged in the guide block (40) in a sliding mode, and a through groove (61a) arranged in the vertical direction is formed in the middle of the material pressing column (61);

the spring (62) is arranged in the guide block (40), one end of the spring is connected with the material pressing column (61), and the other end of the spring is connected with the guide block (40);

a fixing pin (63) horizontally penetrates through the through groove (61a) and is fixed on the guide block (40);

when the die assembly punching is carried out, the material pressing column (61) is slowly contacted with the lower die holder (20), moves upwards under the compression action of the spring (62) until the die assembly is completed, and finally is pressed against the flat wire of the lower die holder (20) due to the reaction force of the compression of the spring (62).

8. The flat wire forming and stamping die according to claim 3, further comprising a manual hold-down assembly (70) located at the material passing space (30) and fixed above the rail seat (50).

9. The flat wire forming and stamping die of claim 3, wherein: the afterbody of die holder (20) still is provided with spacing subassembly (80), spacing subassembly (80) include:

the limiting strip (81) is arranged at the bottom of the lower die holder (20) and can reciprocate along the feeding direction; a positioning through groove (81a) arranged along the feeding direction is formed in the limiting strip (81), and a scale value is further arranged on the outer side of the positioning through groove (81 a);

the limiting rod (82) is vertically arranged at the tail end of the limiting strip (81), and the flat wire penetrates in the feeding direction of the material passing space (30) until the end part of the flat wire abuts against the limiting rod (82);

and the adjusting pin (83) penetrates through the positioning through groove (81a), and the distance between the limiting rod (82) and the lower die seat (20) is adjusted by rotating the adjusting pin (83) and moving the limiting strip (81).

10. A stamping apparatus, characterized in that: a flat wire forming and stamping die as claimed in any one of claims 1 to 9.

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