Double-torsion spring torsion forming mechanism

Abstract

The utility model discloses a double torsion spring torsion forming mechanism which comprises a machine frame, a clamping mechanism, a clamp opening mechanism and a hooking mechanism driving the clamping mechanism and the clamp opening mechanism to move in a reciprocating mode, and the hooking mechanism drives a clamping frame and a pushing frame to slide to achieve clamping. The clamping part is composed of a clamping frame, a movable clamping block, a fixed clamping block, a torsion motor, a fixed column arranged on the fixed clamping block and a spring arranged on the fixed column in a sleeving mode, and the unclamping assembly comprises a pushing frame, a pushing block and a pushing column arranged on the movable clamping block and matched with the pushing block. And during working, the pushing block pushes the pushing column to separate the movable clamping block from the fixed clamping block, so that the structure of the torsion forming mechanism for the double-torsion spring is simplified, and the problem that an existing torsion forming mechanism for the double-torsion spring is complex in structure is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of double-torsion spring forming, in particular to a double-torsion spring torsion forming mechanism. Background Art

[0002] Springs are widely used inside various machines and are almost indispensable components. When subjected to external forces, they will produce elastic deformation, thus storing strain energy and releasing it randomly. A torsion spring is a spring that relies on its torsional elasticity to generate frictional force to transmit power or motion. Among them, there is a kind of torsion spring called a double-torsion spring.

[0003] When manufacturing a double-torsion spring, it needs to be twisted by a certain angle through a torsion forming mechanism to complete the forming. The Chinese utility model patent CN206567463U discloses a double-torsion spring forming machine, which has "an upper rotating motor and an upper rotating shaft are provided on the upper spring forming block, the upper rotating shaft is connected to the upper rotating motor, an upper torsion head is installed on the upper rotating shaft, an upper guide pin and an upper ejector pin are installed on the upper torsion head, a lower rotating motor and a lower rotating shaft are provided on the lower spring forming block, the lower rotating shaft is connected to the lower rotating motor, a lower torsion head is installed on the lower rotating shaft, and a lower guide pin and a lower ejector pin are installed on the lower torsion head". The upper guide pin is inserted into the double-torsion spring to position the double-torsion spring. One end of the double-torsion spring is clamped on the upper ejector pin, and then the upper rotating motor drives the upper rotating shaft to rotate, and the upper ejector pin performs the upper half-section torsion spring forming on the double-torsion spring. Then the lower guide pin is inserted into it, and one end of the double-torsion spring is clamped on the lower ejector pin, and the lower rotating motor drives the lower rotating shaft to rotate, so as to perform the lower half-section forming on the double-torsion spring. It needs to set upper and lower torsion forming mechanisms, resulting in the technical problem of complex mechanism structure. Content of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the utility model provides a double-torsion spring torsion forming mechanism. By setting a clamping component and a clamping-opening component on different sliding seats, a fixed column is set on the fixed clamping block, and a spring that makes the movable clamping block and the fixed clamping block always have a tendency to clamp is sleeved on the fixed column. A push column that cooperates with the push block to open the movable clamping block and the fixed clamping block is provided on the clamping-opening component. During work, the push block pushes the push column to separate the movable clamping block and the fixed clamping block, simplifies the structure of the double-torsion spring torsion forming mechanism, and solves the problem of complex structure of the existing double-torsion spring torsion forming mechanism.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A double-torsion spring torsion forming mechanism, including a frame. A wire spitting mandrel is provided on the frame. Multiple sets of hooking mechanisms are arranged around the wire spitting mandrel. Each hooking mechanism includes a base, a sliding seat, and a driving mechanism. The base and the driving mechanism are installed on the frame. The sliding seat is slidably installed on the base. When the sliding seat slides, it can selectively approach or move away from the wire spitting mandrel. It also includes a clamping assembly and a clip-opening assembly. The clamping assembly is arranged on one of the sliding seats, and the clip-opening assembly is arranged on the other sliding seat. The clamping assembly includes a clamping frame arranged on the sliding seat. A torsion motor is provided on the clamping frame. A fixed clamping block and a movable clamping block are provided at the output end of the torsion motor. A fixed column is provided on the fixed clamping block. A first through hole is opened on the movable clamping block. The fixed column passes through the first through hole and is fixedly connected to the fixed clamping block. A spring that always makes the movable clamping block and the fixed clamping block have a clamping tendency is sleeved on the fixed column. The clip-opening assembly includes a pushing frame arranged on the sliding seat and a pushing block arranged on the pushing frame. A pushing column that cooperates with the pushing block to open the movable clamping block and the fixed clamping block is provided on the movable clamping block. By arranging the clamping assembly and the clip-opening assembly on different sliding seats, providing a fixed column on the fixed clamping block, sleeving a spring on the fixed column, and providing a pushing column on the clip-opening assembly that cooperates with the pushing block, during operation, the pushing block pushes the pushing column to separate the movable clamping block and the fixed clamping block, simplifying the structure of the double-torsion spring torsion forming mechanism and solving the problem of the complex structure of the existing double-torsion spring torsion forming mechanism.

[0007] As a preferred solution, a fixed block is provided at one end of the fixed column away from the fixed clamping block. During assembly, one end of the spring abuts against the fixed block, and the other end abuts against the movable clamping block.

[0008] As a preferred solution, the number of the fixed columns is two, and the fixed columns are arranged along the length direction of the fixed clamping block.

[0009] As a preferred solution, a second through hole corresponding to the pushing column is provided on the fixed clamping block. One end of the pushing column is fixedly connected to the movable clamping block, and the other end of the pushing column extends through the second through hole towards the pushing block.

[0010] As a preferred solution, the pushing column is provided with a connecting head. The pushing column is fixedly connected to the movable clamping block through the connecting head, and a receiving groove corresponding to the connecting head is provided at the second through hole.

[0011] As a preferred solution, a pushing surface that cooperates with the pushing column is provided on the pushing block, and the extending direction of the pushing surface is the same as the moving direction of the clamping frame.

[0012] As a preferred solution, the clamping frame is provided with a motor mounting seat, and the torsion motor is arranged on the motor mounting seat.

[0013] As a preferred solution, the motor mounting seat has a fixing part and a mounting part. The torsion motor is movably mounted on the mounting part, and the motor mounting seat is movably mounted on the clamping frame through the fixing part.

[0014] As a preferred solution, the mounting part includes a first bracket and a second bracket which are arranged in parallel with the fixing part. Installation grooves are provided on the opposite sides of the first bracket and the second bracket. Ribs corresponding to the installation grooves are provided on the torsion motor. Lock blocks are provided at the ends of the first bracket and the second bracket away from the fixing part to prevent the torsion motor from falling off.

[0015] As a preferred solution, the fixing part is provided with a runway-shaped mounting hole, and the motor mounting seat is mounted on the clamping frame through screws or bolts passing through the runway-shaped mounting hole.

[0016] Compared with the prior art, the present utility model has obvious advantages and beneficial effects. Specifically, by arranging a clamping assembly and an unclamping assembly on different sliding seats, arranging a fixing column on the fixed clamping block, and sleeving a spring on the fixing column to make the movable clamping block and the fixed clamping block always have a tendency to clamp, a push column for cooperating with the push block to open the movable clamping block and the fixed clamping block is provided on the unclamping assembly. During operation, the fixed clamping block and the movable clamping block are in a pressed state. The push block pushes the push column to separate the movable clamping block and the fixed clamping block, clamp the double torsion spring, and the torsion motor drives the clamping mechanism to directly twist the double torsion spring into shape. There is no need to set up upper and lower torsion forming mechanisms, which simplifies the structure of the torsion forming mechanism, is convenient for use and maintenance, and improves the user experience.

[0017] To more clearly elaborate the structural features, technical means, and the specific purposes and functions achieved by the present utility model, the following further detailed description of the present utility model will be given in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the embodiment of the present utility model;

[0019] Figure 2 is the structural schematic diagram of the frame, wire spitting mandrel, hooking mechanism, clamping mechanism, and unclamping mechanism of the embodiment of the present utility model;

[0020] Figure 3 is Figure 2 the structural schematic diagram at position A in

[0021] Figure 4 is the exploded structural schematic diagram of the clamping mechanism and the driving mechanism of the embodiment of the present utility model;

[0022] Figure 5 is the exploded structural schematic diagram of the torsion motor, movable clamping block, fixed clamping block, fixed column, and push column of the embodiment of the present utility model;

[0023] Figure 6 It is a schematic exploded view of the clip-opening mechanism and the driving mechanism of an embodiment of the present utility model.

[0024] Explanation of the attached drawing reference numerals:

[0025] 10 - Frame; 11 - Thread spitting mandrel; 12 - Hooking mechanism;

[0026] 13 - Base; 14 - Sliding seat; 15 - Driving mechanism;

[0027] 20 - Clamping assembly; 21 - Clamping frame; 22 - Motor mounting seat

[0028] 221 - Fixed part; 222 - Raceway-shaped mounting hole; 223 - Mounting part;

[0029] 224 - First bracket; 225 - Second bracket; 226 - Mounting groove;

[0030] 227 - Locking block; 23 - Torsion motor; 231 - Rib;

[0031] 24 - Fixed clamping block; 241 - Fixed column; 242 - Fixed block;

[0032] 243 - Spring; 244 - Second through hole; 245 - Accommodating groove;

[0033] 25 - Movable clamping block; 251 - First through hole; 252 - Thrust column;

[0034] 253 - Connector; 30 - Clip-opening assembly; 31 - Thrust frame;

[0035] 32 - Thrust block; 33 - Thrust surface. Detailed implementation manners

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0037] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] As Figure 1-6 shown, the present utility model discloses a double-torsion spring torsion forming mechanism, which includes a frame 10. A wire spitting mandrel 11 is provided on the frame 10. A plurality of hook mechanisms 12 are arranged around the wire spitting mandrel 11. Each hook mechanism 12 includes a base 13, a sliding seat 14, and a driving mechanism 15. The base 13 and the driving mechanism 15 are installed on the frame 10. The sliding seat 14 is slidably installed on the base 13. When the sliding seat 14 slides, it can selectively approach or move away from the wire spitting mandrel 11. It further includes a clamping assembly 20 and a clip-opening assembly 30. The clamping assembly 20 is arranged on one of the sliding seats 14, and the clip-opening assembly 30 is arranged on the other sliding seat 14. The clamping assembly 20 includes a clamping frame 21 arranged on the sliding seat 14. A torsion motor 23 is provided on the clamping frame 21. A fixed clamping block 24 and a movable clamping block 25 are provided at the output end of the torsion motor 23. A fixed column 241 is provided on the fixed clamping block 24. A first through hole 251 is formed on the movable clamping block 25. The fixed column 241 passes through the first through hole 251 and is fixedly connected to the fixed clamping block 24. A spring 243 that always has a tendency to clamp the movable clamping block 25 and the fixed clamping block 24 is sleeved on the fixed column 241. A fixed block 242 is provided at one end of the fixed column 241 away from the fixed clamping block 24. During assembly, one end of the spring 243 abuts against the fixed block 242, and the other end abuts against the movable clamping block 25. The clip-opening assembly 30 includes a pushing frame 31 arranged on the sliding seat 14 and a pushing block 32 arranged on the pushing frame 31. A pushing column 252 that cooperates with the pushing block 32 to open the movable clamping block 25 and the fixed clamping block 24 is provided on the movable clamping block 25. A second through hole 244 corresponding to the pushing column 252 is provided on the fixed clamping block 24. One end of the pushing column 252 is fixedly connected to the movable clamping block 25, and the other end of the pushing column 252 passes through the second through hole 244 and extends towards the pushing block 32. By arranging the clamping assembly 20 and the clip-opening assembly 30 on different sliding seats 14, arranging the fixed column 241 on the fixed clamping block 24, sleeving the spring 243 on the fixed column 241, and providing the pushing column 252 that cooperates with the pushing block 32 on the clip-opening assembly 30, during operation, the pushing block 32 pushes the pushing column 252 to separate the movable clamping block 25 and the fixed clamping block 24, simplifying the structure of the double-torsion spring 243 torsion forming mechanism and solving the problem of the complex structure of the existing double-torsion spring torsion forming mechanism.

[0039] In this embodiment, the cross-section of the wire-spitting mandrel 11 is a sector with an obtuse or straight central angle; various cutting tools in the prior art are also included on this double-torsion spring clamping and forming machine. These cutting tools can perform operations such as bending and shearing on the spring wire ejected from the wire-spitting hole, and these cutting tools can be implemented using the prior art and will not be elaborated here.

[0040] In this embodiment, the driving mechanism 15 further includes a driving motor, an eccentric shaft, a triangular swing arm, a linkage shaft, etc. The eccentric shaft is arranged at the output end of the driving motor and is rotatably connected to one end of the triangular swing arm. The middle part of the triangular swing arm is rotatably arranged on the frame 10, and the other end of the triangular swing arm is rotatably connected to the sliding seat 14 through the linkage shaft. With this structure, the sliding seat 14 can be driven to move reciprocally. The driving mechanism 15 can be implemented using the prior art and will not be elaborated here.

[0041] The number of the fixed columns 241 is two, and the fixed columns 241 are arranged along the length direction of the fixed clamp block 24 to achieve a better clamping effect.

[0042] The pushing column 252 is provided with a connecting head 253. The pushing column 252 is fixedly connected to the movable clamp block 25 through the connecting head 253. A receiving groove 245 corresponding to the connecting head 253 is provided at the second through hole 244; by setting the connecting head 253, the pushing column 252 can be fixed on the movable clamp block 25. When the movable clamp block 25 and the fixed clamp block 24 are pressed together, the pushing head is located in the receiving groove 245, making the movable clamp block 25 and the fixed clamp block 24 clamp tightly.

[0043] The pushing block 32 is provided with a pushing surface 33 that cooperates with the pushing column 252. The extending direction of the pushing surface 33 is the same as the moving direction of the clamping frame 21; when the sliding seat 14 moves, the pushing column 252 will not disengage from the pushing surface 33 during the moving process.

[0044] The clamping frame 21 is provided with a motor mounting seat 22, and the torsion motor 23 is arranged on the motor mounting seat 22; the motor mounting seat 22 has a fixing part 221 and a mounting part 223, the torsion motor 23 is movably mounted on the mounting part 223, and the motor mounting seat 22 is movably mounted on the clamping frame 21 through the fixing part 221; the mounting part 223 includes a first bracket 224 and a second bracket 225 which are arranged in parallel with the fixing part 221. Both opposite sides of the first bracket 224 and the second bracket 225 are provided with mounting grooves 226, and the torsion motor 23 is provided with a rib 231 corresponding to the mounting groove 226. The ends of the first bracket 224 and the second bracket 225 far from the fixing part 221 are provided with locking blocks 227 to prevent the torsion motor 23 from falling off; by aligning the motor rib 231 with the mounting groove 226 and sliding it into the mounting part 223 along the first bracket 224 and the second bracket 225, the locking block 227 can fix the torsion motor 23 to prevent the clamping mechanism from falling off during movement; the fixing part 221 is provided with a runway-shaped mounting hole 222, and the motor mounting seat 22 is mounted on the clamping frame 21 by screws or bolts passing through the runway-shaped mounting hole 222; the horizontal position of the torsion motor 23 can be adjusted through the cooperation of the mounting groove 226 and the rib 231, and the up and down position of the torsion motor 23 can be adjusted through the runway-shaped mounting hole 222, improving the versatility of the equipment.

[0045] The usage method of the present utility model: The hooking mechanism 12 pushes the clamping assembly 20 to move, causing the movable clamping block 25 and the fixed clamping block 24 to move towards the double torsion spring. At the same time, another hooking mechanism 12 drives the pushing frame 31, and further causes the pushing block 32 to push the pushing column 252. Under the action of the pushing column 252, the movable clamping block 25 and the fixed clamping block 24 are separated. At this time, the double torsion spring is located between the movable clamping block 25 and the fixed clamping block 24. The hooking mechanism 12 resets and drives the pushing frame 31 to reset. The movable clamping block 25 and the fixed clamping block 24 are pressed together under the action of the spring 243 and clamp the double torsion spring. The torsion motor 23 rotates to drive the fixed clamping block 24 and the movable clamping block 25 to twist the double torsion spring. After the twisting is completed, the hooking mechanism 12 drives the movable pushing frame 31, and further causes the pushing block 32 to push the pushing column 252. Under the action of the pushing 8, the movable clamping block 25 and the fixed clamping block 24 are separated, and then the double torsion spring is released. The hooking mechanism 12 drives the clamping frame 21 to reset, completing the clamping operation.

[0046] In summary, in the present utility model, a clamping assembly 20 and an unclamping assembly 30 are provided on different sliding seats 14, a fixing post 241 is provided on the fixed clamping block 24, and a spring 243 that always makes the movable clamping block 25 and the fixed clamping block 24 tend to clamp is sleeved on the fixing post 241. A pushing post 252 that cooperates with the pushing block 32 to open the movable clamping block 25 and the fixed clamping block 24 is provided on the unclamping assembly 30. During operation, the fixed clamping block 24 and the movable clamping block 25 are in a pressed state. The pushing block 32 pushes the pushing post 252 to separate the movable clamping block 25 and the fixed clamping block 24, and the double torsion spring is clamped. The torsion motor 23 drives the clamping mechanism to directly twist the double torsion spring into shape, without setting upper and lower torsion forming mechanisms, simplifying the structure of the torsion forming mechanism, facilitating use and maintenance, and improving the user experience.

[0047] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made to the above embodiments according to the actual technology of the present utility model still fall within the scope of the technical solutions of the present utility model.

Claims

1. A double-twist spring torsion forming mechanism, including a frame. A wire spitting mandrel is provided on the frame. A plurality of hooking mechanisms are arranged around the wire spitting mandrel. Each hooking mechanism includes a base, a sliding seat and a driving mechanism. The base and the driving mechanism are installed on the frame. The sliding seat is slidably installed on the base. When the sliding seat slides, it can selectively approach or move away from the wire spitting mandrel. It is characterized in that: It further includes a clamping assembly and a clip-opening assembly. The clamping assembly is arranged on one of the sliding seats, and the clip-opening assembly is arranged on the other sliding seat. The clamping assembly includes a clamping frame arranged on the sliding seat. A torsion motor is provided on the clamping frame. A fixed clamping block and a movable clamping block are provided at the output end of the torsion motor. A fixed column is provided on the fixed clamping block. A first through hole is formed on the movable clamping block. The fixed column passes through the first through hole and is fixedly connected to the fixed clamping block. A spring that always makes the movable clamping block and the fixed clamping block have a clamping tendency is sleeved on the fixed column; The clip-opening assembly includes a pushing frame arranged on the sliding seat and a pushing block arranged on the pushing frame. A pushing column that cooperates with the pushing block to open the movable clamping block and the fixed clamping block is provided on the movable clamping block.

2. The torsion forming mechanism of a double torsion spring according to claim 1, characterized in that, A fixed block is provided at one end of the fixed column away from the fixed clamping block. During assembly, one end of the spring abuts against the fixed block, and the other end abuts against the movable clamping block.

3. A double-torsion spring torsion forming mechanism according to claim 2, characterized in that, The number of the fixed columns is two, and the fixed columns are arranged along the length direction of the fixed clamping block.

4. A double-torsion spring torsion forming mechanism according to claim 1, characterized in that, The fixed clamping block is provided with a second through hole corresponding to the pushing column. One end of the pushing column is fixedly connected to the movable clamping block, and the other end of the pushing column passes through the second through hole and extends towards the pushing block.

5. A double-torsion spring torsion forming mechanism according to claim 4, characterized in that, The pushing column is provided with a connecting head. The pushing column is fixedly connected to the movable clamping block through the connecting head. A receiving groove corresponding to the connecting head is provided at the second through hole.

6. A double-torsion spring torsion forming mechanism according to claim 1, characterized in that, The pushing block is provided with a pushing surface that cooperates with the pushing column. The extending direction of the pushing surface is the same as the moving direction of the clamping frame.

7. A double-torsion spring torsion forming mechanism according to claim 1, characterized in that, The clamping frame is provided with a motor mounting seat, and the torsion motor is arranged on the motor mounting seat.

8. A double-torsion spring torsion forming mechanism according to claim 7, characterized in that, The motor mounting seat has a fixing part and a mounting part. The torsion motor is movably installed on the mounting part, and the motor mounting seat is movably installed on the clamping frame through the fixing part.

9. A double-torsion spring torsion forming mechanism according to claim 8, characterized in that, The mounting part includes a first bracket and a second bracket that are arranged parallel to each other and are fixed parts. Installation grooves are provided on the opposite surfaces of the first bracket and the second bracket. Ribs corresponding to the installation grooves are provided on the torsion motor. Locking blocks that prevent the torsion motor from falling are provided at the ends of the first bracket and the second bracket away from the fixing part.

10. A double-torsion spring torsion forming mechanism according to claim 8, characterized in that, The fixing part is provided with a runway-shaped mounting hole, and the motor mounting seat is installed on the clamping frame through screws or bolts passing through the runway-shaped mounting hole.

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