A spring pressing device

Abstract

This utility model discloses a spring pressing device, including a worktable. The worktable is equipped with a fixture positioning tool, a press, and a nut locking / unlocking assembly. The nut locking / unlocking assembly includes a sleeve and a rotary drive assembly, which drives the sleeve to rotate in both directions. The sleeve has a clamping element and a control assembly. The nut has a clamping part that cooperates with the clamping element. The control assembly controls the clamping element to clamp the clamping part, so that the nut is engaged within the sleeve. A moving assembly for controlling the movement of the sleeve is also provided on the worktable. This solution, by setting up the nut locking / unlocking assembly, allows the clamping element to engage with the clamping part on the nut during unlocking. When locking is required, the control assembly releases the control of the clamping element, preventing it from clamping the nut and allowing the nut to disengage from the sleeve. This process eliminates the need for additional nut placement, improving overall efficiency while preventing nut loss.

Description

Technical Field

[0001] This utility model belongs to the field of spring processing technology, and in particular relates to a spring pressing device. Background Technology

[0002] Many factors influence the function and reliability of springs, including spring design, selection, manufacturing process, and operating conditions. Among these, material and heat treatment have a significant, even decisive, impact on spring performance and service life.

[0003] In some spring processing techniques, springs need to be compressed. For example, in the hot pressing process of springs, the spring needs to be pressed into a fixture, and then the fixture is placed in a heat treatment furnace for hot pressing. Due to the influence of the spring structure, the basic structure of existing spring compression fixtures usually consists of two plates. One plate has a rod for the spring to pass through, and the other plate has a through hole for the rod to pass through. The end of the rod can be threaded. After the spring is pressed into the corresponding position of the fixture through the plate with the through hole, the plate is locked in place by a nut.

[0004] Existing devices typically require the use of electric wrenches to remove nuts when unlocking the inner fixture, and manual placement is required. In mass production lines, this fixture is usually reused, and an additional process of placing and storing the nuts is needed each time the material is unloaded. Although this reduces the occurrence of lost nuts, the extra process forces a decrease in production efficiency. Based on this, the applicant has designed a new pressing device to improve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a spring pressing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, one technical solution adopted by this utility model is: a spring pressing device, including a worktable, on which a fixture positioning tool, a press and a nut loading and unloading assembly are provided; The nut locking / unlocking assembly includes a sleeve and a rotary drive assembly. The sleeve can be fitted onto the side wall of the nut and drive it to rotate in both directions. The rotary drive assembly is used to drive the sleeve to rotate in both directions. The sleeve is provided with a clamping element and a control component. The nut has a clamping part that cooperates with the clamping element. The control component can control the clamping element to clamp the clamping part so that the nut is engaged in the sleeve. The workbench is also equipped with a moving component that controls the movement of the control sleeve and the fixture on the fixture positioning tool, allowing the fixture to move closer or further away from each other.

[0007] Preferably, the sleeve has several through holes extending into it around its rotation axis, the clamping part is a groove on the nut, and the control component is used to control the clamping part to clamp the groove.

[0008] Preferably, the clamping element is a ball bearing, which is placed in the connecting through hole and partially can be inserted into the slot through the connecting through hole; The control component includes a limiting sleeve and a limiting conversion component sleeved on the sleeve. The limiting sleeve includes a snap-fit ​​limiting part and a disengagement limiting part. When the snap-fit ​​limiting part is placed at the connecting through hole, the ball is snapped into the slot. When the release limiting part is sleeved at the connecting through hole, the ball moves between the connecting through hole and the release limiting part and allows the nut to disengage from the sleeve; The limit switching component is used to control the movement of the limit sleeve.

[0009] Preferably, the sleeve is disposed at one end of a telescopic rod, and the rotation drive assembly drives the sleeve to rotate by controlling the rotation of the other end of the telescopic rod. A rotating seat is disposed on the worktable, and the telescopic rod passes through the rotating seat and is able to rotate with the rotating seat. The moving assembly drives the rotating seat to move, thereby realizing the extension and retraction of the telescopic rod.

[0010] Preferably, the fixture positioning tooling includes an abutment plate and a clamping plate. The worktable is also provided with a clamping drive assembly for controlling the movement of the clamping plate to achieve positioning of the fixture in the horizontal X-axis direction. The worktable is also provided with a horizontal Y-axis positioning assembly to achieve positioning of the fixture in the horizontal Y-axis direction.

[0011] Preferably, the workbench is further provided with spring loading / unloading rods and a misalignment moving assembly. One end of each spring loading / unloading rod corresponds to a rod on the fixture. The spring loading / unloading rods can pass through the through holes of the plate with through holes on the fixture. The press is used to push the springs on the spring loading / unloading rods onto the rods on the fixture. The misalignment moving assembly is used to control the movement of the spring loading / unloading rods or the fixture positioning fixture so that they are misaligned to facilitate loading and unloading.

[0012] Preferably, the spring loading and unloading rod is a hollow tube, and a connecting positioning rod slides inside the spring loading and unloading rod. A connecting groove is opened at the end of the rod body of the fixture near the connecting positioning rod, and a connecting positioning drive assembly capable of controlling the positioning rod to insert into the connecting groove is provided on the worktable.

[0013] Preferably, the working end of the press is provided with a spring clamping assembly, which includes a push seat installed on the working end of the press, a clamping block provided on the push seat, and a clamping drive assembly provided on the push seat that can clamp the spring on the fixture and move it to the spring loading / unloading rod.

[0014] Preferably, the working end of the press is equipped with a pressure sensor.

[0015] Preferably, a torque amplification component is connected between the rotary drive assembly and the sleeve to increase the output torque of the rotary drive assembly.

[0016] The beneficial effects of this utility model are as follows: This solution sets up a nut locking and unlocking component. When unlocking, the control component controls the locking part to lock into the locking part on the nut. When locking is required, the control component releases the control of the locking part, so that the locking part can no longer lock the nut. After the nut is tightened on the fixture, the nut can be released from the sleeve under the action of its thread force. The above process does not require an additional nut placement process, which improves the overall efficiency while avoiding the loss of the nut. Among them, automatic nut loading can control the tightening force and ensure the stability of spring heat compression; and automatic nut loading can avoid the time spent by manually picking up the electric wrench and searching for the nut, thus improving efficiency.

[0017] The spring loading and unloading rods enable the pre-loading of springs and the subsequent removal of springs. The spring loading and unloading rods also enable the loading and clamping of long springs, improving the applicability of the product. The staggered movement component ensures the smooth loading and unloading of springs. By setting a connecting positioning rod, the connection between the upper rod of the fixture and the spring loading / unloading rod can be realized, ensuring the smooth transfer of the spring between the spring loading / unloading rod and the upper rod of the fixture; Among them, by setting up a spring clamping assembly, a plate on the spring and the fixture is moved to the spring loading and unloading rod, which facilitates the unloading and the next loading action; Among them, a pressure sensor is set up to control the amount of compression, ensuring the consistency of each spring after pressing. By incorporating a torque-enhancing component, the output torque of the rotary drive component is increased, thereby enhancing the sleeve's ability to tighten and loosen the nut. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the fixture positioning tool and the nut unlocking and loosening assembly in this utility model; Figure 4 This is a schematic diagram of the structure of the nut unlocking assembly in this utility model. Figure 1 ; Figure 5 This is a schematic diagram of the structure of the nut unlocking assembly in this utility model. Figure 2 ; Figure 6 This is a schematic diagram of the structure of the spring loading / unloading rod, the connecting positioning rod, and the connecting positioning drive assembly in this utility model; Figure 7 This is a schematic diagram of the spring clamping assembly in this utility model; Figure 8 This is a schematic diagram of the internal structure of the spring clamping assembly in this utility model; Figure 9 This is a schematic diagram showing the position of the torque increasing component in this utility model; In the diagram: 1. Workbench; 2. Press; 3. Fixture positioning tool; 31. Abutment plate; 32. Clamping plate; 33. Clamping drive assembly; 34. Horizontal Y-axis positioning assembly; 4. Nut locking / unlocking assembly; 41. Sleeve; 42. Rotation drive assembly; 43. Limit sleeve; 44. Connecting sleeve; 45. Connecting plate two; 46. Mounting base; 47. Limit conversion drive cylinder; 48. Rotating seat; 49. Telescopic rod telescopic section; 410. Telescopic rod fixing section; 411. Connecting through hole; 5. Moving assembly one; 6. Spring upper and lower 7. Material rod; 71. Spring clamping assembly; 72. Push seat; 73. Mounting plate; 74. Push plate; 75. Clamping drive assembly; 76. Clamping block; 77. Turntable; 78. Arc groove; 79. Telescopic groove; 80. Misalignment movement assembly; 81. Guide rail one; 92. Fixture; 93. Plate one; 94. Rod; 95. Plate two; 10. Nut; 11. Slot; 12. Torque increasing assembly; 13. Connecting positioning rod; 14. Connecting positioning drive assembly; 15. Connecting plate one; 16. Connecting shaft; 17. Connecting seat. Detailed Implementation

[0019] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0020] Among them, the fixture 9 described in this solution is Figure 3The structure or principle similar to that shown in the figure is specifically manifested in that the jig 9 includes a plate 91 with a fixed rod 92 and a plate 93; several rods 92 for spring compression are fixed on the plate 91, and through holes are opened on the plate 93 so that they can be inserted into the rods 92 to compress the spring. The rods 92 can be threaded rods and are fixed to the rods 92 by the threaded connection of the two plates through the nuts 94. Alternatively, the threaded rods can be fixed on the plate 93, and through holes can be opened on the plate 91 to allow the threaded rods to pass through. The spring can be fixed on the plate 91 and the plate 93 by the threaded connection of the nuts 94 and the threaded connection of the threaded rods fixed on the plate 93. The example shown below is a second form of the jig 9.

[0021] Example: See Figure 1 , Figure 2 A spring pressing device includes a worktable 1, on which a fixture positioning tool 3, a press 2 and a nut loading and unloading assembly 4 are provided. The press 2 can be a cylinder, and its working end is connected to a connecting shaft 14. The press 2 pushes the plate 2 93 through the connecting shaft 14. The nut unlocking / unlocking assembly 4 includes a sleeve 41 and a rotary drive assembly 42. The sleeve 41 can be fitted onto the side wall of the nut 94 and drive it to rotate in both directions. The rotary drive assembly 42 is used to drive the sleeve 41 to rotate in both directions. The rotary drive assembly 42 can be a motor. The sleeve 41 is provided with a clamping element and a control component. The nut 94 has a clamping part that cooperates with the clamping element. The control component can control the clamping element to clamp the clamping part so that the nut 94 is engaged in the sleeve 41. The workbench 1 is also provided with a moving component 5 that moves the control sleeve 41 and the fixture 9 on the fixture positioning fixture 3 closer or further apart. The moving component 5 can also be a cylinder.

[0022] Among them, see Figure 4 , Figure 5 The sleeve 41 has several through holes 411 extending into it around its rotation axis. The clamping part is a groove 95 on the nut 94. The control component is used to control the clamping part to clamp the groove 95.

[0023] The clamping component is a ball bearing, which is placed in the connecting through hole 411 and can be partially inserted into the slot 95 through the connecting through hole 411. The control component includes a limiting sleeve 43 sleeved on the sleeve 41 and a limiting conversion component. The limiting conversion component includes a limiting conversion cylinder and a connecting sleeve 44. The connecting sleeve 44 is connected to the limiting sleeve 43. The movement of the limiting sleeve 43 is achieved by the movement of the connecting sleeve 44 driven by the limiting conversion cylinder. The limiting sleeve 43 includes a snap-fit ​​limiting part and a disengagement limiting part. When the snap-fit ​​limiting part is placed at the connecting through hole 411, the ball is snapped into the slot 95. When the release limiting part is sleeved at the connecting through hole 411, the ball moves between the connecting through hole 411 and the release limiting part, allowing the nut 94 to disengage from the sleeve 41; specifically, the inner ring wall of the limiting sleeve 43 is divided into two parts in a stepped shape, so that the limiting sleeve 43 can achieve the locking and loosening of the ball in the slot 95 after movement (see Figure 5 (Magnification portion).

[0024] The sleeve 41 is disposed at one end of a telescopic rod. The rotary drive assembly 42 drives the sleeve 41 to rotate by controlling the rotation of the other end of the telescopic rod. A rotating seat 48 is disposed on the worktable 1. The rotating seat 48 is a bearing seat. The moving assembly 5 drives the bearing seat to move to realize the extension and retraction of the telescopic rod. The telescopic rod passes through the rotating seat 48 and can rotate with the rotating seat 48. The moving assembly 5 drives the rotating seat 48 to move to realize the extension and retraction of the telescopic rod. The telescopic rod includes a telescopic rod extension section 49 and a telescopic rod fixing section 410. The telescopic rod extension section 49 is fixed to the inner ring of the bearing on the rotating seat 48. The end of the telescopic rod fixing section 410 away from the telescopic rod extension section 49 is fixed to the working end of the rotary drive assembly 42. The telescopic rod fixing section 410 and the telescopic rod extension section 49 are splinedly connected to achieve extension and retraction sliding and power transmission.

[0025] Among them, see Figures 3-5 A set of guide rails is provided on the workbench 1. A mounting base 46 slides on the guide rails 2. The limit conversion cylinder and the rotating base 48 are both fixed on the mounting base 46. The moving component 5 controls the movement of the mounting base 46 on the guide rails 2 to realize the approach and distance between the sleeve 41 and the fixture 9. A connecting plate 45 is also fixed on the mounting base 46. One end of the connecting sleeve 44 is hinged to the connecting plate. The limit conversion cylinder drives the movement of the limit sleeve 43 on the sleeve 41 by driving the deflection of the connecting sleeve 44.

[0026] Among them, see Figure 3The fixture positioning tool 3 includes an abutment plate 31 and a clamping plate 32. The worktable 1 is also equipped with a clamping drive assembly 33 to control the movement of the clamping plate 32, thereby achieving the positioning of the fixture 9 in the horizontal X-axis direction. The worktable 1 is also equipped with a horizontal Y-axis positioning assembly 34 to achieve the positioning of the fixture 9 in the horizontal Y-axis direction. Specifically, the abutment plate 31 has two parts, both of which are fixed to a horizontally positioned plate. One end of the clamping plate 32 is connected to the abutment plate. 31 is hinged, and the clamping plate 32 has a groove from top to bottom so that it and the abutment plate 31 form a fitting shape structure of the edge of the plate body 91. The clamping and limiting assembly is fixed to the side of the abutment plate 31. A through hole is opened on the side of the clamping plate 32 so that the working end of the horizontal Y-axis positioning assembly 34 can be inserted into and abut against the plate body 91 after the clamping plate 32 clamps, thereby realizing the positioning of the plate body 91 in the horizontal Y-axis direction. Both the clamping drive assembly 33 and the horizontal Y-axis positioning assembly 34 can be cylinders.

[0027] Among them, see Figure 3 , Figure 6 The workbench 1 is also equipped with spring loading / unloading rods 6 and a misalignment moving assembly 8. One end of each spring loading / unloading rod 6 corresponds to a rod 92 on the fixture 9. The spring loading / unloading rod 6 can pass through the through hole of the plate with through hole on the fixture 9. The press 2 is used to push the spring on the spring loading / unloading rod 6 onto the rod 92 on the fixture 9. The misalignment moving assembly 8 is used to control the movement of the spring loading / unloading rod 6 or the fixture positioning fixture 3 so that the two are misaligned to facilitate loading and unloading. Specifically, the workbench 1 is T-shaped. The spring on the fixture 9 is set in the X-axis direction. A guide rail 81 is set in the T-shaped part of the workbench 1. The plate fixed to the two abutment plates 31 slides on the guide rail 81. The misalignment moving assembly 8 can be a cylinder to drive the fixture positioning fixture 3 to move on the guide rail 81.

[0028] Among them, see Figure 6 The spring loading / unloading rod 6 is a hollow tube, and a connecting positioning rod 11 slides inside the spring loading / unloading rod 6. A connecting groove is opened at the end of the rod body 92 of the fixture 9 near the connecting positioning rod 11. A connecting positioning drive assembly 12 capable of controlling the insertion of the positioning rod into the connecting groove is provided on the worktable 1. Specifically, a connecting seat 15 is fixed on the worktable 1. The positioning rod passes through the connecting seat 15 and is fixed together on a connecting plate 13. The spring loading / unloading rod 6 is fixed on the connecting seat 15, and the connecting positioning drive assembly 12 is also fixed on the connecting seat 15. The connecting positioning drive assembly 12 can be a cylinder to drive the connecting positioning rod 11 to extend and retract with the spring loading / unloading rod 6 by driving the connecting plate 13. The connecting shaft 14 is set to rub through the connecting seat 15 and the connecting plate 13.

[0029] Among them, see Figure 7 , Figure 8 The working end of the press 2 (the end of the connecting shaft 14) is connected to a spring clamping assembly 7. The spring clamping assembly 7 includes a push seat 71 mounted on the working end of the press 2, a clamping block 73 disposed on the push seat 71, and a clamping drive assembly 72 disposed on the push seat 71 capable of clamping the spring on the fixture 9 and moving it to the spring loading / unloading rod 6. Specifically, the push seat 71 includes a mounting plate 711 and a push plate 712. The upper part has a through hole so that the spring loading and unloading rods 6 can be inserted. A turntable 74 is mounted on the mounting plate 711 and rotatably connected thereto. The turntable 74 has an arc-shaped groove 75. The push plate 712 has a telescopic groove 76. One end of the clamping block 73 slides in the arc-shaped groove 75 and the other end protrudes from the telescopic groove 76. The clamping drive assembly 72 can be a cylinder, which drives the turntable 74 to rotate and converts the movement of the clamping block 73 in the arc-shaped groove 75 into telescopic movement on the telescopic groove 76.

[0030] The press 2 is equipped with a pressure sensor at its working end, which can be mounted on the push plate 712 to detect the reaction force of the plate body 93.

[0031] A torque amplification component 10 is provided between the rotary drive assembly 42 and the sleeve 41 to increase the output torque of the rotary drive assembly 42. Specifically, the torque amplification component 10 can be a speed reducer, or an impact structure in an electric wrench from brands such as Makita.

[0032] Working principle and process: When this device is in operation, plate 93 and spring are first inserted into spring loading / unloading rod 6, and plate 93 with rod 92 is simultaneously placed into fixture positioning fixture 3 for positioning. Then, the misalignment moving component 8 drives fixture positioning fixture 3 to move along guide rail 81, aligning rod 92 on fixture 9 with spring loading / unloading rod 6. Next, the positioning drive component 12 drives the connecting positioning rod 11 to connect spring loading / unloading rod 6 with rod 92 on fixture 9. Then, press 2 controls push seat 71 to push plate 712 and spring into the rod 92 on plate 91 for compression. The stroke is determined based on pressure sensor data, and the process continues until the device stops. Afterwards, the telescopic rod of the moving component 5 moves, causing the nut 94 on the sleeve 41 to contact the threaded rod on the plate 93. The limit conversion drive cylinder 47 drives the connecting sleeve 44 to control the limit sleeve 43 to disengage from the limit part and be sleeved at the connecting through hole 411. Then, this process can be carried out by the moving component 5 following the forward stroke of the nut 94, or by the length of the sleeve 41 itself, the nut 94 can be moved inside the sleeve 41 until it is locked. After the nut 94 is tightened, the misaligned moving component 8 drives the fixture positioning fixture 3 to be misaligned away, so as to facilitate the removal and return of the fixture positioning fixture 3, as well as the subsequent unloading after the spring on the fixture 9 is removed and placed on the spring loading / unloading rod 6.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A spring press fitting device characterized by comprising: Includes a workbench (1), on which a fixture positioning tool (3), a press (2) and a nut loading and unloading assembly (4) are provided; The nut unlocking and unlocking assembly (4) includes a sleeve (41) and a rotation drive assembly (42). The sleeve (41) can be fitted onto the side wall of the nut (94) and drive it to rotate in both directions. The rotation drive assembly (42) is used to drive the sleeve (41) to rotate in both directions. The sleeve (41) is provided with a clamping element and a control component. The nut (94) has a clamping part that works with the clamping element. The control component can control the clamping element to clamp the clamping part so that the nut (94) is engaged in the sleeve (41). The workbench (1) is also provided with a moving component (5) that moves the control sleeve (41) and the fixture (9) on the fixture positioning fixture (3) closer or further apart.

2. A spring press fitting device according to claim 1, characterized in that: The sleeve (41) has several through holes (411) extending into it around its rotation axis. The clamping part is a groove (95) on the nut (94). The control component is used to control the clamping part to clamp the groove (95).

3. A spring press fitting device according to claim 2, characterized in that: The clamping element is a ball bearing, which is placed in the connecting through hole (411) and can be partially inserted into the slot (95) through the connecting through hole (411); The control component includes a limiting sleeve (43) fitted on the sleeve (41) and a limiting conversion component. The limiting sleeve (43) includes a snap-fit ​​limiting part and a release limiting part. When the snap-fit ​​limiting part is fitted at the connecting through hole (411), the ball is snapped into the slot (95). When the release limiting part is sleeved at the connecting through hole (411), the ball moves between the connecting through hole (411) and the release limiting part and allows the nut (94) to disengage from the sleeve (41); The limit conversion component is used to control the movement of the limit sleeve (43).

4. The spring press device of claim 1, wherein: The sleeve (41) is set at one end of a telescopic rod. The rotation drive assembly (42) drives the sleeve (41) to rotate by controlling the other end of the telescopic rod to rotate. A rotating seat (48) is set on the worktable (1). The telescopic rod passes through the rotating seat (48) and can rotate the rotating seat (48). The moving assembly (5) drives the rotating seat (48) to move, thereby realizing the extension and retraction of the telescopic rod.

5. The spring press device of claim 1, wherein: The fixture positioning tool (3) includes an abutment plate (31) and a clamping plate (32). The abutment plate (31) and the clamping plate (32) are provided on the worktable (1). A clamping drive assembly (33) for controlling the movement of the clamping plate (32) is also provided on the worktable (1) to realize the positioning of the fixture (9) in the horizontal X-axis direction. A horizontal Y-axis positioning assembly (34) is also provided on the worktable (1) to realize the positioning of the fixture (9) in the horizontal Y-axis direction.

6. The spring press device of claim 1, wherein: The workbench (1) is also provided with spring loading / unloading rods (6) and misalignment moving assembly (8). One end of each spring loading / unloading rod (6) is correspondingly set with a rod (92) on the fixture (9). The spring loading / unloading rod (6) can pass through the through hole of the plate with through hole on the fixture (9). The press (2) is used to push the spring on the spring loading / unloading rod (6) onto the rod (92) on the fixture (9). The misalignment moving assembly (8) is used to control the movement of the spring loading / unloading rod (6) or the fixture positioning fixture (3) so that the two are misaligned to facilitate loading and unloading.

7. A spring press fitting device according to claim 6, characterized in that: The spring loading and unloading rod (6) is a hollow tube. A connecting positioning rod (11) slides inside the spring loading and unloading rod (6). A connecting groove is opened at the end of the rod body (92) of the fixture (9) near the connecting positioning rod (11). A connecting positioning drive assembly (12) capable of controlling the positioning rod to insert into the connecting groove is provided on the worktable (1).

8. The spring press device of claim 6, wherein: The working end of the press (2) is provided with a spring clamping assembly (7). The spring clamping assembly (7) includes a push seat (71) installed on the working end of the press (2), a clamping block (73) provided on the push seat (71), and a clamping drive assembly (72) provided on the push seat (71) that can clamp the spring on the fixture (9) and move it to the spring loading and unloading rod (6).

9. The spring press device of claim 1, wherein: The press (2) is equipped with a pressure sensor at its working end.

10. The spring press device of claim 1, wherein: A torque amplification component (10) is connected between the rotary drive assembly (42) and the sleeve (41) to increase the output torque of the rotary drive assembly (42).

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