Copper wire extrusion forming device

Abstract

The utility model discloses a copper wire extrusion forming device which comprises a base, a copper wire forming channel is arranged on the base, and the copper wire extrusion forming device is further provided with a stamping die, an opposite extrusion forming block, a first side opposite extrusion forming block and a second side opposite extrusion forming block. The stamping die and the opposite extrusion forming block are both installed in the copper wire forming channel and can do reciprocating motion in the axis direction of the copper wire forming channel. A forming groove is formed in the stamping die, and the face, right facing the extrusion forming block, of the stamping die can be attached to the groove face of the forming groove. The first side pair extrusion forming block is installed on one side of the copper wire forming channel, and the second side pair extrusion forming block is installed on the other side of the copper wire forming channel. When the copper wire needs to be bent, the copper wire is firstly extruded by the opposite extrusion forming block and then bent, and then is extruded by the first side opposite extrusion forming block and the second side opposite extrusion forming block and then bent. According to the utility model, the bent copper wire does not have the condition of long and short pins.

Description

Technical Field

[0001] The utility model relates to the technical field of copper wire forming for new energy automobile engines, in particular to a copper wire extrusion forming device. Background Art

[0002] Hairpin permanent magnet synchronous motors (Hairpin motors) are gradually being used on a large scale in the domestic drive motor market. Compared with traditional winding motors, due to the flat characteristics of Hairpin copper wire, motors using Hairpin copper wire are smaller in size at the same power, and are the development direction of the next generation of new energy drive motors.

[0003] In the processing of copper wire for new energy vehicle engines, a two-step forming method is usually adopted. The stamping die pushes the copper wire toward the direction close to the extrusion forming block. The copper wire is first bent into a U-shaped structure through the first side extrusion forming block and the second side extrusion forming block. The middle section of the copper wire is then bent into a V-shaped structure through the extrusion forming block.

[0004] However, in actual operation, the position of the copper wire cannot be well fixed between the first side extrusion forming block and the stamping die and between the second side extrusion forming block and the stamping die, which causes the copper wire to easily shift between the first side extrusion forming block and the stamping die and between the second side extrusion forming block and the stamping die, resulting in the copper wire having longer and shorter legs after bending. Summary of the invention

[0005] The utility model provides a copper wire extrusion molding device to overcome the above technical problems.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] A copper wire extrusion molding device comprises a base, wherein a copper wire molding channel is arranged on the base, wherein the axial direction of the copper wire molding channel is consistent with the length direction of the base, and a stamping die, a facing extrusion molding block, a first side facing extrusion molding block and a second side facing extrusion molding block are installed on the base; the stamping die and the facing extrusion molding block are sequentially arranged and installed in the copper wire molding channel along the axial direction of the copper wire molding channel and can both reciprocate along the axial direction of the copper wire molding channel; a molding groove is provided on a surface of the stamping die opposite to the facing extrusion molding block, and a surface of the facing extrusion molding block opposite to the stamping die can be fitted with a groove surface of the molding groove; The first side-facing extrusion forming block is installed on one side of the copper wire forming channel, and the second side-facing extrusion forming block is installed on the other side of the copper wire forming channel; the first side-facing extrusion forming block is provided with a first side-facing extrusion surface which can be opposite to the stamping die, and the second side-facing extrusion forming block is provided with a second side-facing extrusion surface which can be opposite to the stamping die; the copper wire is placed between the stamping die and the facing extrusion forming block, and when the copper wire needs to be bent, the stamping die pushes the copper wire to move in the direction close to the facing extrusion forming block, and the copper wire is first squeezed and bent by the facing extrusion forming block, and then squeezed and bent by the first side-facing extrusion forming block and the second side-facing extrusion forming block.

[0008] Furthermore, the groove surface of the forming groove includes a first facing extrusion surface and a second facing extrusion surface; the first facing extrusion surface and the second facing extrusion surface both extend along the height direction of the base.

[0009] Furthermore, the angle between the first facing extrusion surface and the second facing extrusion surface is consistent with a set bending angle of the copper wire.

[0010] Furthermore, the stamping die is provided with a first die side surface which is opposite to the first side extrusion surface and a second die side surface which is opposite to the second side extrusion surface; the first die side surface extends along the height direction of the base and is parallel to the first side extrusion surface, and the second die side surface extends along the height direction of the base and is parallel to the second side extrusion surface.

[0011] Furthermore, the distance between the first die side surface and the first side extrusion surface is the width of the copper wire, and the distance between the second die side surface and the second side extrusion surface is the width of the copper wire.

[0012] Furthermore, a first wire stop block and a second wire stop block are installed on the base; the first wire stop block is located on one side of the copper wire forming channel, and the second wire stop block is located on the other side of the copper wire forming channel; the copper wire is located between the first wire stop block and the first side extrusion forming block and between the second wire stop block and the second side extrusion forming block, and when the copper wire completes bending, the two ends of the copper wire are respectively in contact with the first wire stop block and the second wire stop block.

[0013] Furthermore, a first chamfer is provided on a side of the first side facing the extrusion surface close to the copper wire, and a second chamfer is provided on a side of the second side facing the extrusion surface close to the copper wire.

[0014] Beneficial effects:

[0015] In the utility model, when the copper wire needs to be bent, the copper wire is first placed between the stamping die and the facing extrusion forming block, and then the stamping die pushes the copper wire to move in the direction close to the facing extrusion forming block. The copper wire is first squeezed by the facing extrusion forming block and then bent. At this time, the middle section of the copper wire is bent into a V-shaped structure and clamped by the facing extrusion forming block and the stamping die. Then, it is squeezed by the first side extrusion forming block and the second side extrusion forming block and then bent. At this time, the copper wire is bent into a U-shaped structure. During the copper wire bending process, since the middle section of the copper wire is clamped by the facing extrusion forming block and the stamping die, the copper wire will not be displaced on a copper wire extrusion forming device provided by the utility model, and the bent copper wire will not have the problem of long and short legs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 is an overall structural diagram of an embodiment of the present invention;

[0018] Figure 2 It is an overall structural diagram of the stamping die in an embodiment of the present invention;

[0019] Figure 3 It is an overall structural diagram of the first wire blocking block and the second wire blocking block in an embodiment of the present invention;

[0020] Figure 4 This is an overall structural diagram of the first side extrusion forming block in an embodiment of the present invention;

[0021] Figure 5 This is an overall structural diagram of the second side extrusion forming block in an embodiment of the present invention;

[0022] Figure 6 This is an overall structural diagram of the extrusion forming block in an embodiment of the present invention;

[0023] Figure 7 is an overall structural diagram of a first slider and a second slider in an embodiment of the present invention;

[0024] In the figure: 1-copper wire forming channel; 2-stamping die; 3-first wire blocking block; 4-copper wire; 5-first side extrusion forming block; 6-base; 7-facing extrusion forming block; 8-second side extrusion forming block; 9-second wire blocking block; 10-second die side; 11-first die side; 12-first chamfer; 13-first side extrusion surface; 14-second chamfer; 15-second side extrusion surface; 16-first facing extrusion surface; 17-second facing extrusion surface; 18-first slider; 19-second slider. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] This embodiment provides a copper wire extrusion molding device, such as Figure 1 , Figure 4 and Figure 5 As shown, it includes a base 6, on which a copper wire forming channel 1 is arranged, the axial direction of the copper wire forming channel 1 is consistent with the length direction of the base 6, and a stamping die 2, a facing extrusion forming block 7, a first side extrusion forming block 5 and a second side extrusion forming block 8 are installed on the base 6; the stamping die 2 and the facing extrusion forming block 7 are arranged in sequence along the axial direction of the copper wire forming channel 1 and are installed in the copper wire forming channel 1 and can reciprocate along the axial direction of the copper wire forming channel 1; a molding groove is provided on the surface of the stamping die 2 opposite to the facing extrusion forming block 7, and a surface of the facing extrusion forming block 7 opposite to the stamping die 2 can be fitted with the groove surface of the molding groove; the first side The extrusion forming block 5 is installed on one side of the copper wire forming channel 1, and the second side extrusion forming block 8 is installed on the other side of the copper wire forming channel 1; the first side extrusion forming block 5 is provided with a first side extrusion surface 13 which can be opposite to the stamping die 2, and the second side extrusion forming block 8 is provided with a second side extrusion surface 15 which can be opposite to the stamping die 2; the copper wire 4 is placed between the stamping die 2 and the facing extrusion forming block 7, and when the copper wire 4 needs to be bent, the stamping die 2 pushes the copper wire 4 to move toward the direction close to the facing extrusion forming block 7, and the copper wire 4 is firstly extruded and bent by the facing extrusion forming block 7, and then extruded and bent by the first side extrusion forming block 5 and the second side extrusion forming block 8.

[0027] In this embodiment, one end of the first electric cylinder is installed on the end of the stamping die 2 away from the extrusion forming block 7, and the first electric cylinder can drive the stamping die 2 to reciprocate along the axial direction of the copper wire forming channel 1; one end of the second electric cylinder is installed on the end of the extrusion forming block 7 away from the stamping die 2, and the second electric cylinder can drive the extrusion forming block 7 to reciprocate along the axial direction of the copper wire forming channel 1.

[0028] Preferably, Figure 6 As shown, the groove surface of the molding groove includes a first facing extrusion surface 16 and a second facing extrusion surface 17 ; the first facing extrusion surface 16 and the second facing extrusion surface 17 both extend along the height direction of the base 6 .

[0029] Preferably, the angle between the first facing extrusion surface 16 and the second facing extrusion surface 17 is consistent with the set bending angle of the copper wire 4 .

[0030] Specifically, the bending angle is set to 150°.

[0031] In this embodiment, when the copper wire 4 needs to be bent, the copper wire 4 is first placed between the stamping die 2 and the facing extrusion forming block 7, and then the stamping die 2 pushes the copper wire 4 to move in the direction close to the facing extrusion forming block 7. The copper wire 4 is first squeezed by the first facing extrusion surface 16 and the second facing extrusion surface 17 on the facing extrusion forming block 7 and then bent. At this time, the middle section of the copper wire 4 is bent into a V-shaped structure with an angle of 150° and is clamped by the facing extrusion forming block 7 and the stamping die 2. It is then squeezed by the first side extrusion surface 13 on the first side extrusion forming block 5 and the second side extrusion surface 15 on the second side extrusion forming block 8 and then bent. At this time, the copper wire 4 is bent into a U-shaped structure. During the bending process of the copper wire 4, since the middle section of the copper wire 4 is clamped by the facing extrusion forming block 7 and the stamping die 2, the copper wire 4 will not be displaced on a copper wire extrusion forming device provided in this embodiment, and the bent copper wire 4 in this embodiment will not have the problem of long and short legs.

[0032] Preferably, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the stamping die 2 is provided with a first die side 11 which can be opposite to the first side extrusion surface 13 and a second die side 10 which can be opposite to the second side extrusion surface 15; the first die side 11 extends along the height direction of the base 6 and is parallel to the first side extrusion surface 13, and the second die side 10 extends along the height direction of the base 6 and is parallel to the second side extrusion surface 15.

[0033] Specifically, the first die side surface 11 and the second die side surface 10 on the stamping die 2 are parallel.

[0034] Specifically, the distance between the first mold side surface 11 and the first side extrusion surface 13 is the width of the copper wire 4 , and the distance between the second mold side surface 10 and the second side extrusion surface 15 is the width of the copper wire 4 .

[0035] In this embodiment, the first side extrusion forming block 5 and the second side extrusion forming block 7 can both reciprocate along the width direction of the base 6 to adjust the distance between the first mold side 11 and the first side extrusion surface 13 and the distance between the second mold side 10 and the second side extrusion surface 15.

[0036] In this embodiment, a section of the bent copper wire 4 between the first mold side 11 and the first side extrusion surface 13 is parallel to a section of the bent copper wire 4 between the second mold side 10 and the second side extrusion surface 15, so that the bent copper wire 4 in this embodiment has an overall U-shaped structure.

[0037] Preferably, Figure 3 As shown, the first wire block 3 and the second wire block 9 are installed on the base 6; the first wire block 3 is located on one side of the copper wire forming channel 1, and the second wire block 9 is located on the other side of the copper wire forming channel 1; the copper wire 4 is located between the first wire block 3 and the first side extrusion forming block 5 and between the second wire block 9 and the second side extrusion forming block 8, and when the copper wire 4 completes bending, the two ends of the copper wire 4 are respectively in contact with the first wire block 3 and the second wire block 9.

[0038] In this embodiment, after the copper wire 4 is bent, the stamping die 2 needs to move away from the extrusion forming block 7 to perform the next bending of the copper wire 4. The two ends of the bent copper wire 4 will contact the first wire block 3 and the second wire block 9 respectively. The first wire block 3 and the second wire block 9 can prevent the bent copper wire 4 from moving away from the extrusion forming block 7 together with the stamping die 2, thereby separating the bent copper wire 4 from the stamping die 2.

[0039] Preferably, Figure 1 , Figure 4 and Figure 5 As shown, a first chamfer 12 is provided on the first side extrusion surface 13 close to the copper wire 4 , and a second chamfer 14 is provided on the second side extrusion surface 15 close to the copper wire 4 .

[0040] In this embodiment, the copper wire 4 is first squeezed by the side of the first chamfer 12 and the side of the second chamfer 14 and then bent. At this time, the copper wire 4 is not completely bent into a U shape. Then, the copper wire 4 is squeezed by the first side extrusion surface 13 and the second side extrusion surface 15 and then bent. At this time, the copper wire 4 is completely bent into a U shape. The first chamfer 12 and the second chamfer 14 play a transition role to prevent the copper wire 4 from breaking due to excessive bending angle at one time.

[0041] Specifically, Figure 1 and Figure 7 As shown, the copper wire forming channel 1 is provided with a first slider 18 and a second slider 19 on both sides, and the first slider 18 and the second slider 19 can reciprocate along the width direction of the base 6. When the copper wire 4 is extruded and formed in this embodiment, if both sides of the copper wire 4 are turned outward, the first side extrusion forming block 5, the second side extrusion forming block 7, the first slider 18 and the second slider 19 are all moved in a direction close to the copper wire forming channel 1. The first side extrusion forming block 5 and the first slider 18 will clamp one side of the copper wire 4 inward, and the second side extrusion forming block 7 and the second slider 1 9 will clamp the other side of the copper wire 4 inward, thereby preventing the two sides of the copper wire 4 from turning outward; if the two sides of the copper wire 4 are buckled inward, the first side extrusion forming block 5, the second side extrusion forming block 7, the first slider 18 and the second slider 19 are all moved away from the copper wire forming channel 1, and the copper wire 4 will recover to its original shape under the action of its own elasticity until one side of the copper wire 4 contacts the first side extrusion forming block 5 and the first slider 18, and the other side of the copper wire 4 contacts the second side extrusion forming block 7 and the second slider 19, thereby preventing the two sides of the copper wire 4 from buckling inward.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A copper wire extrusion molding device, comprising a base (6), wherein a copper wire molding channel (1) is provided on the base (6), wherein the axial direction of the copper wire molding channel (1) is consistent with the length direction of the base (6), and wherein: The base (6) is provided with a stamping die (2), a facing extrusion forming block (7), a first side facing extrusion forming block (5) and a second side facing extrusion forming block (8); The punching die (2) and the facing extrusion forming block (7) are sequentially arranged along the axial direction of the copper wire forming channel (1) and installed in the copper wire forming channel (1), and both can perform reciprocating motion along the axial direction of the copper wire forming channel (1); A molding groove is provided on a surface of the punching die (2) opposite to the extrusion molding block (7), and a surface of the extrusion molding block (7) opposite to the punching die (2) can be fitted with a groove surface of the molding groove; The first side-to-side extrusion forming block (5) is installed on one side of the copper wire forming channel (1), and the second side-to-side extrusion forming block (8) is installed on the other side of the copper wire forming channel (1); The first side-facing extrusion forming block (5) is provided with a first side-facing extrusion surface (13) which can be opposite to the stamping die (2), and the second side-facing extrusion forming block (8) is provided with a second side-facing extrusion surface (15) which can be opposite to the stamping die (2); A copper wire (4) is placed between the punching die (2) and the facing extrusion forming block (7). When the copper wire (4) needs to be bent, the punching die (2) pushes the copper wire (4) to move in a direction close to the facing extrusion forming block (7). The copper wire (4) is firstly squeezed by the facing extrusion forming block (7) and then bent, and then squeezed by the first side extrusion forming block (5) and the second side extrusion forming block (8) and then bent.

2. A copper wire extrusion molding device according to claim 1, characterized in that: The groove surface of the molding groove comprises a first facing extrusion surface (16) and a second facing extrusion surface (17); The first facing extrusion surface (16) and the second facing extrusion surface (17) both extend along the height direction of the base (6).

3. A copper wire extrusion molding device according to claim 2, characterized in that: The angle between the first facing extrusion surface (16) and the second facing extrusion surface (17) is consistent with the set bending angle of the copper wire (4).

4. A copper wire extrusion molding device according to claim 1, characterized in that: The stamping die (2) is provided with a first die side surface (11) which can be opposite to the first side extrusion surface (13) and a second die side surface (10) which can be opposite to the second side extrusion surface (15); The first mold side surface (11) extends along the height direction of the base (6) and is parallel to the first side extrusion surface (13), and the second mold side surface (10) extends along the height direction of the base (6) and is parallel to the second side extrusion surface (15).

5. A copper wire extrusion molding device according to claim 4, characterized in that: The distance between the first die side surface (11) and the first side extrusion surface (13) is the width of the copper wire (4), and the distance between the second die side surface (10) and the second side extrusion surface (15) is the width of the copper wire (4).

6. A copper wire extrusion molding device according to claim 1, characterized in that: The base (6) is provided with a first wire blocking block (3) and a second wire blocking block (9); The first wire blocking block (3) is located on one side of the copper wire forming channel (1), and the second wire blocking block (9) is located on the other side of the copper wire forming channel (1); The copper wire (4) is located between the first wire stop block (3) and the first side extrusion forming block (5) and between the second wire stop block (9) and the second side extrusion forming block (8); when the copper wire (4) is bent, two ends of the copper wire (4) are in contact with the first wire stop block (3) and the second wire stop block (9), respectively.

7. A copper wire extrusion molding device according to claim 1, characterized in that: A first chamfer (12) is provided on the first side extrusion surface (13) on the side close to the copper wire (4), and a second chamfer (14) is provided on the second side extrusion surface (15) on the side close to the copper wire (4).

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