Clamping device of expanding machine

Abstract

The utility model discloses a clamping device of an expanding machine, which comprises clamping side plates arranged oppositely, and the clamping side plates are connected through a transverse positioning mechanism so as to provide transverse positioning for the nose end of an open coil; a longitudinal positioning mechanism is arranged on the inner wall of the clamping side plate, the longitudinal positioning mechanism is provided with a guide rod and clamping plates arranged at the two ends of the guide rod, and the clamping plates move in the same direction or in the opposite directions to longitudinally position, clamp and release the nose end of the open coil. Through cooperation of the transverse positioning mechanism and the longitudinal positioning mechanism, the nose end of the open coil is clamped in the transverse direction and the longitudinal direction at the same time, the problem that the open coil expanding machine cannot clamp and fix the coil is effectively solved, and expanding of the open coil is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of expanding machine devices, in particular to a clamping device for an expanding machine. Background Art

[0002] The expansion coil machine is mainly used to pull the vertical shuttle coil or flat shuttle coil wound by the winding machine into a frame coil.

[0003] Its stator coil includes a frame-type boat-shaped closed-loop stator coil and an open coil. A nose clamp mechanism is set at one end of a general coil expanding machine to fix one end of the coil. It is suitable for the frame-type boat-shaped closed-loop stator coil, but not for the clamping of the open coil.

[0004] A search revealed CN201220669295.8, which discloses a gripping device for straight-edge forming in a stator coil expansion machine. The device comprises two axially corresponding lower jaws connected to the expansion machine frame. These jaws are secured to an inclined support plate. A cylinder, parallel to the inclined support plate, is mounted on the upper end of the plate via a cylinder mounting plate. The cylinder rod is connected to the upper jaw. This significantly enhances the coil clamping force and, due to the larger mold cavity, extends the gripping device's applicability to a wider range of applications. However, this device is not suitable for clamping and expanding open coils.

[0005] CN201210011385.2 discloses a CNC top arc forming machine, comprising a base guide rail mechanism, four bases, two coil nose clamping mechanisms, four wire rod top arc mechanisms, four wire rod clamping and forming mechanisms, a hydraulic station, and a sensor-controlled CNC circuit system. Two bases are respectively disposed at the left and right halves of the upper end of the base guide rail mechanism. Two coil nose clamping mechanisms are respectively connected to the upper ends of the two bases. Another two bases are disposed in the middle of the upper end of the base guide rail mechanism. Four wire rod clamping and forming mechanisms are disposed in pairs at the upper ends of the two bases. Four wire rod top arc mechanisms are disposed flanking the four wire rod clamping and forming mechanisms. During operation, four symmetrical wire rod clamping and forming mechanisms are used to form large coils, while two symmetrical wire rod clamping and forming mechanisms are used to form small coils. This machine is capable of accurately and quickly completing the single-step forming process of various types of motor coils.

[0006] CN201120143891.8 discloses a linear motor coil expansion mechanism, comprising two fixed blocks and two locating pins. The lower end surface of the fixed block has a front-to-back through-slot, and the left side has a left-to-right through-hole. The through-slots of the fixed block are pressed against the front and rear ends of the linear motor coil, and the locating pins pass through the through-holes. The through-slots of the fixed block are pressed into the front and rear ends of the motor linear coil, and the locating pins are inserted to secure the coil. This mechanism requires simultaneous adjustment of the front and rear ends, resulting in a relatively complex structure.

[0007] Therefore, the invention of a clamping device for an expansion machine which is easy to operate, has low production cost, and can be used for both frame-type boat-shaped closed-loop stator coils and open coils has great practical significance and market value. Utility Model Content

[0008] The purpose of the utility model is to address the deficiencies of the existing technology and design a clamping device for an expansion machine. Through the cooperation of a horizontal positioning mechanism and a vertical positioning mechanism, the nose end of the open coil is clamped in the horizontal and vertical directions at the same time, effectively solving the problem that the open coil expansion machine cannot clamp and fix the coil, and providing protection for the expansion of the open coil.

[0009] In order to achieve the above objectives, the specific technical solutions of the present utility model are as follows:

[0010] A clamping device for an expanding machine is provided, comprising relatively arranged clamping side plates, which are connected by a transverse positioning mechanism to provide transverse positioning of the nose end of an open coil; a longitudinal positioning mechanism is provided on the inner wall of the clamping side plate, which is provided with a guide rod and clamping plates arranged at both ends of the guide rod, and the clamping plates move in the same direction or in the opposite direction to achieve longitudinal positioning, clamping and release of the nose end of the open coil.

[0011] The clamping device for the expansion machine of the utility model can position and clamp the open coil that is difficult to clamp horizontally and vertically, providing effective protection for the subsequent processing of the open coil. In addition, this device has high reliability and low equipment cost, and is suitable for popularization and use.

[0012] Furthermore, the clamping side plate includes a mounting base plate having a recessed portion near the nose end for mounting a transverse positioning mechanism. The transverse positioning mechanism includes opposing positioning blocks, each having an edge provided with a mounting guide hole for laterally securing a rod portion, the rod portion integrally connecting the opposing positioning blocks, with the nose end to be processed being placed outside the rod portion. The mounting base plate provides a frame mounting position for the transverse positioning mechanism, making the overall structure highly integrated and fully utilizing space. The mounting base plate also serves as a carrier for mounting a longitudinal positioning mechanism. Scientific design allows the transverse and longitudinal positioning mechanisms to cooperate with each other without interfering with each other.

[0013] Furthermore, a hydraulic cylinder is provided on the outer side of the clamping side plate to drive the clamping side plate disposed opposite to the clamping side plate to move laterally; the extension and contraction direction of the hydraulic cylinder is consistent with the installation direction of the rod portion. Using the hydraulic cylinder to drive the spacing of the clamping side plates allows for smooth operation and easy adjustment.

[0014] Furthermore, a longitudinal positioning mechanism mounting groove is provided on the inner side of the clamping side plate. The mounting groove is a strip-shaped cavity with a single-side opening, and a guide stop is provided at the opening of the strip-shaped cavity. The guide stop can effectively prevent the device in the mounting groove from falling out, avoiding the risk of use.

[0015] Furthermore, the guide rod is a stud bolt, and the clamping plate is mounted on a nut block that engages the stud bolt; the clamping plate extends from one side of the guide rod toward the lateral positioning mechanism. A guide stop block abuts against the end of the nut block at one end to prevent the nut block from dislodging. Furthermore, an anti-slip strip is provided on the inner side of the opposing clamping plates, and the anti-slip strip has a corrugated structure. The anti-slip strip is preferably a corrugated rubber structure, which can increase friction during clamping while preventing damage to the nose end of the open coil.

[0016] Furthermore, one end of the guide rod extends outside the clamping plate, and the portion extending outside the clamping plate is provided with a polygonal torsion key. This structural design can effectively adjust the relative distance of the nut block through external force, thereby adjusting the position of the clamping plate on the nut block, and has strong operability.

[0017] Furthermore, the polygonal torsion key and the end surface of the clamping plate are provided with a limiting protrusion, the limiting protrusion is a convex structure, and the convex structure is provided with a limiting cavity with an opening on one side.

[0018] Furthermore, the thread directions of the two ends of the guide rod are different, and the distance between the oppositely arranged clamping plates is larger than the size of the nose end of the open coil. This structure can ensure that the oppositely arranged clamping plates move relative to or in opposite directions.

[0019] Furthermore, the relative positioning blocks have different structures, including a wedge-shaped positioning block 1 arranged on one side of the longitudinal positioning mechanism and a rectangular positioning block 2 arranged on the opposite side of the wedge-shaped positioning block 1, and the maximum distance between the wedge-shaped positioning block 1 and the rectangular positioning block 2 is less than the length of the rod.

[0020] Compared with the prior art, the clamping device of the expansion machine of the utility model has the following advantages:

[0021] The expanding machine clamping device of the utility model clamps the nose end of the open coil in the horizontal and vertical directions simultaneously through the cooperation of the horizontal positioning mechanism and the vertical positioning mechanism, effectively solving the problem that the open coil expanding machine cannot clamp and fix the coil, and ensuring the expansion of the open coil.

[0022] The clamping device of the expansion machine of the utility model can produce both closed-loop frame coils and open-loop coils. At the same time, the structure can more reliably solve the problem of misalignment and climbing of the nose ends of double coils.

[0023] The clamping device of the expansion machine of the utility model ensures that the open coil is firmly clamped up and down and left and right to achieve expansion, while not affecting the expansion of the closed-loop shuttle coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an assembly diagram of the clamping device of the expanding machine of the utility model in use.

[0025] Figure 2 It is a structural schematic diagram of the clamping device of the expansion machine described in the utility model.

[0026] Figure 3 This is a schematic diagram of the assembly structure of the clamping device of the expansion machine described in the utility model.

[0027] Figure 4 This is a schematic structural diagram of the limiting protrusion of the clamping device of the expanding machine of the utility model.

[0028] Among them, 1-clamping side plate, 11-mounting base plate, 2-lateral positioning mechanism, 21-positioning block, 211-wedge-shaped positioning block one, 212-rectangular positioning block two, 22-mounting guide hole, 23-rod, 3-longitudinal positioning mechanism, 31-guide rod, 32-clamping plate, 33-nut block, 4-oil cylinder, 5-mounting groove, 51-guide stop block, 6-anti-slip belt, 7-polygonal torsion key, 8-limiting protrusion, 81-limiting cavity, 9-connecting plate. DETAILED DESCRIPTION

[0029] The present invention is further described below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the accompanying drawings. Example 1

[0030] like Figures 1-4 As shown, this expanding machine clamping device can produce both frame-type boat-shaped closed-loop stator coils and boat-shaped coils with one end open. This can be achieved by switching to a four-arm expanding machine nose clamp mechanism. This expanding machine clamping device positions and clamps difficult-to-grip open coils both horizontally and vertically, effectively ensuring subsequent processing of the open coils. This device also offers high reliability and low equipment cost, making it suitable for widespread use.

[0031] The clamping device of the expanding machine includes relatively arranged clamping side plates 1, which are connected by a transverse positioning mechanism 2 to provide transverse positioning of the nose end of the open coil A; the inner wall of the clamping side plate 1 is provided with a longitudinal positioning mechanism 3, and the longitudinal positioning mechanism is provided with a guide rod 31 and clamping plates 32 arranged at both ends of the guide rod 31. The clamping plates 32 move in the same direction or opposite direction to realize the longitudinal positioning, clamping and release of the nose end of the open coil A.

[0032] Specifically, the clamping side plate 1 includes a mounting base 11. A recessed area near the nose of the mounting base 11 is provided for mounting the lateral positioning mechanism 2. A concave and convex positioning groove is provided on the other edge of the mounting base 11. The two opposing mounting bases 11 are connected by a connecting plate 9, which enhances the stability of the clamping side plate 1. The inner side of the connecting plate 9 is flat, acting as a position limiter for the inserted end of the open coil A. A cylinder 4 is provided on the outer side of the clamping side plate 1 to drive the lateral movement of the opposing clamping side plates 1. The extension and retraction direction of the cylinder 4 aligns with the installation direction of the rod 23. In this embodiment, the cylinder 4 is located outside the mounting base 11. The relative movement of the mounting bases 11 is driven by the cylinder 4 to adjust the spacing between the mounting bases 11. A mounting groove 5 for the longitudinal positioning mechanism 3 is provided on the inner side of the clamping side plate 1. The mounting groove 5 is a strip-shaped cavity with a single-side opening, and a guide stop 51 is provided at the opening of the strip-shaped cavity. The guide stop block 51 is provided to limit the end of the guide rod 31 so that the guide rod 31 does not slide in the vertical direction, thereby ensuring stability in use.

[0033] In this embodiment, the transverse positioning mechanism 2 includes opposing positioning blocks 21. The edges of the positioning blocks 21 are provided with mounting guide holes 22 for laterally securing a rod 23. The rod 23 connects the opposing positioning blocks 21 into a single piece, and the nose to be processed is placed outside the rod 23. The positioning blocks 21 fit into the grooves of the mounting base 11. In this embodiment, the opposing positioning blocks 21 have different structures, including a wedge-shaped positioning block 1 211 provided on one side of the longitudinal positioning mechanism 3 and a rectangular positioning block 212 provided on the opposite side of the wedge-shaped positioning block 1 211. The maximum distance between the wedge-shaped positioning block 1 211 and the rectangular positioning block 2 212 is less than the length of the rod 23. The mounting guide hole 22 is a C-shaped structure, and the centers of the two C-shaped structures are on the same horizontal line; the rod portion 23 is a variable diameter rod body, and the outer diameter gradually decreases from the rectangular positioning block 212 to the wedge-shaped positioning block 1 211. The large end 231 of the rod portion 23 is an arch structure surrounded by an arc surface and a plane. The middle part 232 of the rod portion 23 is cylindrical, and the outer diameter of the cylinder is smaller than the internal size of the nose end of the open coil A; the small end of the rod portion 23 is provided with a locking nut 233.

[0034] In this embodiment, the guide rod 31 is a stud bolt, and the clamping plate 32 is installed on the nut block 33 that matches the stud bolt; the clamping plate 32 extends from one side of the guide rod 31 in the direction of the lateral positioning mechanism 2. The inner side of the clamping plate 32 arranged opposite to each other is provided with an anti-slip belt 6, and the anti-slip belt 6 has a corrugated structure. One end of the guide rod 31 extends out of the clamping plate 32, and the part extending out of the clamping plate 32 is provided with a polygonal torsion key 7. The polygonal torsion key 7 and the end face of the clamping plate 32 are provided with a limiting protrusion 8, and the limiting protrusion 8 is a convex structure, and the convex structure is provided with a limiting cavity 81 with an open side. The thread directions of the two ends of the guide rod 31 are different; the spacing between the clamping plates 32 arranged opposite to each other is greater than the nose end size of the open coil A.

[0035] In this embodiment, the longitudinal positioning mechanism 3 is increased with a forward and reverse rotating trapezoidal screw nut (with self-locking function) to symmetrically clamp the ends of the open coil in the upper and lower parts.

[0036] The clamping device of this expansion machine can produce both closed-loop frame coils and open-loop coils. At the same time, this structure can more reliably solve the problem of misalignment and climbing of the nose ends of double coils.

[0037] The clamping device of the expansion machine ensures that the open coil is firmly clamped up and down and left and right to achieve expansion, while not affecting the expansion of the closed-loop shuttle coil.

[0038] The above is only an embodiment of the present invention. The present invention is not limited to the field involved in this implementation case. Common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the content of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A clamping device for an expansion machine, characterized in that: The invention comprises clamping side plates (1) arranged opposite to each other, wherein the clamping side plates (1) are connected by a transverse positioning mechanism (2) to provide transverse positioning of the nose end of the open coil (A); the inner wall of the clamping side plates (1) is provided with a longitudinal positioning mechanism (3), wherein the longitudinal positioning mechanism is provided with a guide rod (31) and clamping plates (32) arranged at both ends of the guide rod (31), and the clamping plates (32) move in the same direction or in the opposite direction to realize longitudinal positioning, clamping and releasing of the nose end of the open coil (A).

2. The clamping device of the expansion machine according to claim 1, characterized in that: The clamping side plate (1) includes a mounting base plate (11), and a groove is provided on a side of the mounting base plate (11) close to the nose end for installing a transverse positioning mechanism (2); the transverse positioning mechanism (2) includes positioning blocks (21) arranged opposite to each other, and the edges of the positioning blocks (21) are provided with mounting guide holes (22) for transversely fixing a rod portion (23), and the rod portion (23) connects the positioning blocks (21) arranged opposite to each other into one body, and the nose end to be processed is placed on the outside of the rod portion (23).

3. The clamping device of the expansion machine according to claim 2, characterized in that: An oil cylinder (4) is provided on the outer side of the clamping side plate (1) to drive the clamping side plate (1) disposed opposite thereto to move laterally; the extension and contraction direction of the oil cylinder (4) is consistent with the installation direction of the rod portion (23).

4. The clamping device of the expansion machine according to claim 3, characterized in that: An installation groove (5) for the longitudinal positioning mechanism (3) is provided on the inner side of the clamping side plate (1); the installation groove (5) is a strip-shaped cavity with a single-side opening; a guide stop block (51) is provided at the opening of the strip-shaped cavity.

5. The clamping device of the expansion machine according to claim 4, characterized in that: The guide rod (31) is a stud bolt, and the clamping plate (32) is mounted on a nut block (33) matched with the stud bolt; the clamping plate (32) extends from one side of the guide rod (31) toward the lateral positioning mechanism (2).

6. The clamping device of the expansion machine according to claim 5, characterized in that: An anti-slip belt (6) is provided on the inner side of the clamping plates (32) arranged opposite to each other, and the anti-slip belt (6) has a corrugated structure.

7. The clamping device of the expansion machine according to claim 6, characterized in that: One end of the guide rod (31) extends out of the clamping plate (32), and the portion extending out of the clamping plate (32) is provided with a polygonal torsion key (7).

8. The clamping device of the expansion machine according to claim 7, characterized in that: The polygonal torsion key (7) and the end surface of the clamping plate (32) are provided with a limiting protrusion (8), the limiting protrusion (8) is a convex structure, and the convex structure is provided with a limiting cavity (81) with an opening on one side.

9. The expanding machine clamping device according to any one of claims 2 to 8, characterized in that: The thread directions of the two ends of the guide rod (31) are different; the distance between the clamping plates (32) arranged opposite to each other is greater than the size of the nose end of the open coil (A).

10. The clamping device of the expansion machine according to claim 9, characterized in that: The positioning blocks (21) arranged opposite to each other have different structures, including a wedge-shaped positioning block (211) arranged on one side of the longitudinal positioning mechanism (3) and a rectangular positioning block (212) arranged on the opposite side of the wedge-shaped positioning block (211), and the maximum distance between the wedge-shaped positioning block (211) and the rectangular positioning block (212) is less than the length of the rod (23).

Images