Multi-groove cam mechanism for card issuing

Abstract

The application discloses a multi-groove cam mechanism for clamping hairpins, wherein a cam disc is connected with a driving arm, the cam disc is provided with a first group of grooves, the first group of grooves comprises a plurality of first inclined grooves which are arranged at intervals along the same circumference, at least one first shifting pin is arranged in each first inclined groove, the first shifting pin is connected with a first wire extruding strip, a guide mechanism is provided with a first guide groove, the first wire extruding strip is matched with the first guide groove, a second group of grooves is not on the same circumference with the first group of grooves, the second group of grooves comprises a plurality of second inclined grooves which are arranged at intervals along the same circumference, at least one second shifting pin is arranged in each second inclined groove, the second shifting pin is connected with a second wire extruding strip, the guide mechanism is provided with a second guide groove, and the second wire extruding strip is matched with the second guide groove. The application has the advantages of saving space.

Description

Technical Field

[0001] The invention relates to the technical field of motor stators, and in particular to a multi-slot cam mechanism for clamping a hairpin. Background Art

[0002] At present, after the flat copper wire hairpin of the rotor or stator of the high-efficiency generator and new energy drive motor is formed, the commonly used process is: first remove the formed hairpin from the hairpin forming mold, and then insert the hairpin into the core slot as a whole at one time. Figure 1 As shown, it includes a cam plate 1, a first detent pin 2, a first extrusion bar 3, a driving arm 4, and a guide mechanism. The cam plate 1 is connected to the driving arm 4. The cam plate 1 is provided with a first group of grooves. The first group of grooves includes a plurality of first inclined grooves 11 arranged along the same circumference. Each first inclined groove 11 is equipped with a first detent pin 2. The first detent pin 2 is connected to the first extrusion bar 3. The guide mechanism is provided with a first guide groove, and the first extrusion bar 3 cooperates with the first guide groove.

[0003] During operation, the driving arm 4 drives the cam plate 1 to rotate, and the driving force of the first inclined groove 11 on the cam plate 1 acts on the first detent pin 2. The component force generated by the first detent pin 2 drives the first extrusion line 3 to move radially along the first guide groove on the guide mechanism, so that the first extrusion line 3 has a clamping function on the hairpin.

[0004] The above institutions have shortcomings, such as Figure 2 As shown: In order to ensure stable operation of the mechanism, it is necessary to ensure that the diameter of the first pin 2 is not too small, usually the diameter of the first pin 2 is not less than 3 mm, and the minimum distance L between two adjacent first inclined grooves 11 on the cam plate 1 cannot be too small, usually the minimum distance L is not less than 2 mm. When the number of card issuing groups increases, it is necessary to simultaneously increase the distance a from the first pin 2 and the first inclined groove 11 to the center of the cam plate 1. This will cause the size of the mechanism to increase sharply, occupy a large space, waste materials, and cause the equipment to be too large. Summary of the Invention

[0005] The invention provides a multi-slot cam mechanism for clamping a hairpin and capable of saving space.

[0006] The technical solutions to the above problems are as follows:

[0007] The multi-slot cam mechanism for clamping hairpin comprises a cam disc, a first push pin, a first extrusion strip, a driving arm and a guide mechanism, the cam disc is connected with the driving arm, the cam disc is provided with a first group of slots, the first group of slots comprises a plurality of first inclined slots arranged along the same circumference, at least one first push pin is arranged in each first inclined slot, the first push pin is connected with the first extrusion strip, the guide mechanism is provided with a first guide slot, the first extrusion strip is matched with the first guide slot, and the multi-slot cam mechanism further comprises a second push pin, a second extrusion strip and a second group of slots arranged on the cam disc, the second group of slots is not on the same circumference with the first group of slots, the second group of slots comprises a plurality of second inclined slots arranged along the same circumference, at least one second push pin is arranged in each second inclined slot, the second push pin is connected with the second extrusion strip, the guide mechanism is provided with a second guide slot, and the second extrusion strip is matched with the second guide slot.

[0008] Compared with the prior art, the first group of slots and the second group of slots are distributed on two circumferences with different diameters, the first extrusion strip and the second extrusion strip are made into different lengths, the first extrusion strip and the second extrusion strip are used for clamping the end of the hairpin on the same circumference, the first group of slots and the second group of slots are matched, and in this way, the diameters of the first push pin and the second push pin and the inclined slot spacing remain unchanged, when the number of hairpin groups increases, the size of the cam disc is prevented from increasing through the newly arranged second group of slots, the second push pin and the second extrusion strip, so that the space is saved and the mechanism is lightened. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a structural diagram of the cam mechanism for clamping hairpin in the prior art;

[0010] Figure 2 It is a structural diagram of the cam mechanism for clamping hairpin in the prior art; Figure 1

[0011] Figure 3 It is a perspective view of the multi-slot cam mechanism for clamping hairpin of the application;

[0012] Figure 4 It is a perspective view of the cam disc in the application;

[0013] Figure 5 It is a perspective view of the guide mechanism;

[0014] Figure 6 It is a perspective view of the first extrusion strip;

[0015] Figure 7 It is a perspective view of the second extrusion strip;

[0016] Markings in the drawings:

[0017] ​Cam disc 1, center hole 10, first inclined slot 11, second inclined slot 12, first shifting pin 2, first extruded strip 3, first connecting part 3a, first guide section 3b, first clamping part 3c, driving arm 4, guide mechanism 5, first guide slot 5a, second guide slot 5b, bearing fitting seat 5c, support plate 5d, axial limiting part 5e, several guide plates 5f, second shifting pin 6, second extruded strip 7, second connecting part 7a, second guide section 7b, second clamping part 7c. DETAILED DESCRIPTION

[0018] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0019] As Figures 3 to 7 , the multi-groove cam mechanism for clamping hairpins comprises a cam disc 1, a first shifting pin 2, a first extruded strip 3, a driving arm 4, and a guide mechanism 5, the cam disc 1 is connected with the driving arm 4, the cam disc 1 is provided with a first group of grooves, the first group of grooves comprises a plurality of first inclined slots 11 arranged along the same circumference, at least one first shifting pin 2 is arranged in each first inclined slot 11, the first shifting pin 2 is connected with the first extruded strip 3, the guide mechanism 5 is provided with a first guide slot 5a, the first extruded strip 3 is matched with the first guide slot 5a, and the multi-groove cam mechanism further comprises a second shifting pin 6, a second extruded strip 7, and a second group of grooves arranged on the cam disc 1, the second group of grooves is not on the same circumference as the first group of grooves, the second group of grooves comprises a plurality of second inclined slots 12 arranged along the same circumference, at least one second shifting pin 6 is arranged in each second inclined slot 12, the second shifting pin 6 is connected with the second extruded strip 7, the guide mechanism 5 is provided with a second guide slot 5b, and the second extruded strip 7 is matched with the second guide slot 5b.

[0020] The diameter of the circumference where the first group of grooves is located is smaller than the diameter of the circumference where the second group of grooves is located, the first extruded strip 3 and the second extruded strip 7 are used to clamp the end portions of the hairpins on the same circumference, therefore, the length of the first extruded strip 3 is set to be smaller than the length of the second extruded strip 7.

[0021] The preferred arrangement of the second inclined slot 12 and the first inclined slot 11 is that the second inclined slot 12 and the first inclined slot 11 are arranged in a staggered manner, so that for the second inclined slot 12, the arrangement direction of the second inclined slot 12 is directed to the interval between two adjacent first inclined slots 11, and for the first inclined slot 11, the arrangement direction of the first inclined slot 11 is directed to the interval between two adjacent second inclined slots 12, thus making the space of the cam disc 1 fully utilized, after arranging the first group of grooves and the second group of grooves on the same cam disc 1, both groups of grooves are not interfered with each other, and the first extruded strip 3 and the second extruded strip 7 are alternately arranged in the circumferential direction of the cam disc 1, and the first extruded strip 3 and the second extruded strip 7 are also not interfered with each other during work.

[0022] Compared with the prior art, the first group of slots and the second group of slots are matched by distributing the first group of slots and the second group of slots to two circumferences with different diameters, simultaneously making the first wire extruding strip 3 and the second wire extruding strip 7 with different lengths, and making the first wire extruding strip 3 and the second wire extruding strip 7 used for clamping the end portions of the hairpin on the same circumference. In this way, the diameter of the first dial pin 2 and the second dial pin 6 and the pitch L of the inclined slots can be effectively kept unchanged, and when the number of the hairpin groups is increased, the size of the cam disc 1 is prevented from increasing by the newly arranged second group of slots, the second dial pin 6 and the second wire extruding strip 7, so as to achieve the purposes of saving space and lightening the mechanism.

[0023] The cam disc 1 is provided with a central hole 10, the axis of the guide mechanism 5 is arranged on the same line as the axis of the cam disc 1, and the outer diameter of the guide mechanism 5 is less than or equal to the hole diameter of the central hole 10. Based on the relationship between the guide mechanism 5 and the cam disc 1, at least a part of the guide mechanism 5 can be arranged in the central hole 10 of the cam disc 1. Since the first guide slot 5a and the second guide slot 5b are arranged along the radial direction of the guide mechanism 5, and the clamped hairpin is arranged in the inner hole of the guide mechanism 5, when the first wire extruding strip 3 and the second wire extruding strip 7 move along the radial direction of the guide mechanism 5 respectively, this structure is beneficial to shorten the distance between the clamping end portions of the first wire extruding strip 3 and the second wire extruding strip 7 and the hairpin, and at the same time, most of the first wire extruding strip 3 and the second wire extruding strip 7 are supported by the guide mechanism 5, so that the strength of the first wire extruding strip 3 and the second wire extruding strip 7 is guaranteed, and the first wire extruding strip 3 and the second wire extruding strip 7 can smoothly clamp the hairpin.

[0024] The first wire extruding strip 3 comprises a first connecting portion 3a, a first guide segment 3b and a first clamping portion 3c. The first connecting portion 3a is connected with the first dial pin 2, one end of the first guide segment 3b is connected with the first connecting portion 3a, and the first guide segment 3b is in sliding fit with the first guide slot 5a. The first clamping portion 3c is connected with the other end of the first guide segment 3b, and the first connecting portion 3a and the first clamping portion 3c are both arranged outside the first guide slot 5a.

[0025] Since the first guide segment 3b is in sliding fit with the first guide slot 5a, and the first connecting portion 3a and the first clamping portion 3c are both arranged outside the first guide slot 5a, this structure makes the middle part of the first wire extruding strip 3 obtain the support and guide effect of the guide mechanism 5, and forms a force balance effect on the two ends of the first wire extruding strip 3, so that the first wire extruding strip 3 can be more flexible in the process of sliding and clamping the hairpin.

[0026] The width of the first connecting portion 3a and the first clamping portion 3c is greater than the slot width of the first guide slot 5a. By limiting the width, the first connecting portion 3a and the first clamping portion 3c are prevented from entering the first guide slot 5a, so that all the first clamping portions 3c of the first wire extruding strips 3 are located on the same circumference, and the feeding of all the first wire extruding strips 3 to the hairpin is uniform when the hairpin is clamped, so that the hairpin is uniformly stressed.

[0027] The second wire extruding strip 7 comprises a second connecting portion 7a, a second guide segment 7b, a second clamping portion 7c, the second connecting portion 7a is connected with the second push pin 6, one end of the second guide segment 7b is connected with the second connecting portion 7a, and the second guide segment 7b is in sliding fit with the second guide slot 5b; the second clamping portion 7c is connected with the other end of the second guide segment 7b, and the second connecting portion 7a and the second clamping portion 7c are located outside the second guide slot 5b.

[0028] Since the second guide segment 7b is in sliding fit with the second guide slot 5b, and the second connecting portion 7a and the second clamping portion 7c are located outside the second guide slot 5b, this structure makes the middle part of the second wire extruding strip 7 obtain the support and guiding effect of the guide mechanism 5, and forms a force balance effect on the two ends of the second wire extruding strip 7, so that the second wire extruding strip 7 can be more flexible during sliding and clamping the hairpin.

[0029] The width of the second connecting portion 7a and the second clamping portion 7c is greater than the slot width of the second guide slot 5b. By limiting the width, the second connecting portion 7a and the second clamping portion 7c are prevented from entering the second guide slot 5b, so that all the second clamping portions 7c of the second wire extruding strips 7 are located on the same circumference, and the feeding of all the second wire extruding strips 7 to the hairpin is uniform when the hairpin is clamped, so that the hairpin is uniformly stressed.

[0030] The guide mechanism 5 comprises a bearing fit seat 5c, a support plate 5d, and a plurality of guide plates 5f. The support plate 5d is arranged on the bearing fit seat 5c, the outer diameter of the support plate 5d is greater than the outer diameter of the bearing fit seat 5c, a part of the support plate 5d extends to the outside of the circumferential surface of the bearing fit seat 5c to form an axial limiting portion 5e for a bearing (not shown in the figure); after the guide plates 5f are arranged on the same circumference of the axial end surface of the support plate 5d, the first guide slot 5a and the second guide slot 5b are alternately formed.

[0031] Finally, it should be noted that: the above embodiments are merely the preferred embodiments of the present application to illustrate the technical solutions of the present application, but not limit it, and is not to limit the protection scope of the present application; although the application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the protection scope of the claims.

Claims

1. A multi-slot cam mechanism for clamping a hairpin, comprising a cam disc (1), a first deflecting pin (2), a first extrusion bar (3), a driving arm (4), and a guide mechanism (5), wherein the cam disc (1) is connected to the driving arm (4), and a first group of grooves is provided on the cam disc (1), wherein the first group of grooves comprises a plurality of first oblique grooves (11) arranged at intervals along the same circumference, wherein each first oblique groove (11) is equipped with at least one first deflecting pin (2), wherein the first deflecting pin (2) is connected to the first extrusion bar (3), and a first guide groove (5a) is provided on the guide mechanism (5), wherein the first extrusion bar (3) cooperates with the first guide groove (5a), and wherein the first guide groove (5a) is provided. The invention also includes a second deflecting pin (6), a second extrusion bar (7), and a second group of grooves arranged on the cam disc (1). The second group of grooves and the first group of grooves are not on the same circumference. The second group of grooves includes a plurality of second oblique grooves (12) arranged at intervals along the same circumference. Each second oblique groove (12) is equipped with at least one second deflecting pin (6). The second deflecting pin (6) is connected to the second extrusion bar (7). The guide mechanism (5) is provided with a second guide groove (5b). The second extrusion bar (7) cooperates with the second guide groove (5b).

2. The multi-slot cam mechanism for clamping a hairpin according to claim 1, characterized in that: The second inclined slot (12) and the first inclined slot (11) are arranged in a staggered manner.

3. The multi-slot cam mechanism for clamping a hairpin according to claim 1, characterized in that: A center hole (10) is provided on the cam disc (1), the axis of the guide mechanism (5) and the axis of the cam disc (1) are located on the same straight line, and the outer diameter of the guide mechanism (5) is smaller than or equal to the aperture of the center hole (10).

4. The multi-slot cam mechanism for clamping a hairpin according to claim 1, characterized in that: The first extruded line (3) includes: A first connecting portion (3a), the first connecting portion (3a) being connected to the first deflector pin (2); A first guide section (3b), one end of the first guide section (3b) is connected to the first connecting portion (3a), and the first guide section (3b) is slidably engaged with the first guide groove (5a); A first clamping portion (3c) is connected to the other end of the first guide section (3b); the first connecting portion (3a) and the first clamping portion (3c) are both located outside the first guide groove (5a).

5. The multi-slot cam mechanism for clamping a hairpin according to claim 4, characterized in that: The widths of the first connecting portion (3a) and the first clamping portion (3c) are both greater than the width of the first guide groove (5a).

6. The multi-slot cam mechanism for clamping a hairpin according to claim 1, characterized in that: The second extruded line (7) includes: A second connecting portion (7a), the second connecting portion (7a) being connected to the second deflecting pin (6); a second guide section (7b), one end of the second guide section (7b) being connected to the second connecting portion (7a), and the second guide section (7b) being in sliding engagement with the second guide groove (5b); A second clamping portion (7c) is connected to the other end of the second guide section (7b), and the second connecting portion (7a) and the second clamping portion (7c) are both located outside the second guide groove (5b).

7. The multi-slot cam mechanism for clamping a hairpin according to claim 6, characterized in that: The widths of the second connecting portion (7a) and the second clamping portion (7c) are both greater than the width of the second guide groove (5b).

8. The multi-slot cam mechanism for clamping a hairpin according to claim 1, characterized in that: The guiding mechanism (5) comprises: Bearing seat (5c); A support plate (5d), the support plate (5d) is arranged on the bearing fitting seat (5c), the outer diameter of the support plate (5d) is larger than the outer diameter of the bearing fitting seat (5c), and a portion of the support plate (5d) extends to the outside of the peripheral surface of the bearing fitting seat (5c) to form an axial limiting portion (5e) for the bearing; A plurality of guide plates (5f) are arranged at intervals on the same circumference of the axial end surface of the support plate (5d) to alternately form the first guide groove (5a) and the second guide groove (5b).

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