Stretching device for spring machining

Abstract

The utility model discloses a stretching device for spring processing, and aims to solve the problem that a spring stretching device in the prior art is only suitable for stretching and forming a spring of which the two sides are provided with hanging rings. The two ends of the spring are fixed by arranging a plurality of clamping jaws which can synchronously move outwards or gather inwards, so that the stretching device can stretch the spring without a hanging ring, and can adapt to springs with different sizes.

Description

Technical Field

[0001] The utility model relates to the field of spring processing, and more particularly to a stretching device for spring processing. Background Art

[0002] A spring is a mechanical component that utilizes elasticity to function, typically made of spring steel. Its elasticity can be used to control the movement of mechanical parts, mitigate shock or vibration, store energy, and measure force. Parts made of elastic materials deform under external forces and return to their original shape when the force is removed. Also known as a "spring," it is typically made of spring steel. There are many different types of springs, primarily categorized by shape, including coil springs, scroll springs, leaf springs, and special-shaped springs. Springs are stretched and formed during production.

[0003] The existing spring stretching is usually done manually, which not only leads to low work efficiency but also increases the labor intensity of the staff. Therefore, the Chinese patent publication number CN214920128U discloses a spring stretching and forming device. The utility model avoids the problem of first hanging the two ends of the spring on the first hook and the second hook respectively when stretching the spring, and driving the L-shaped rod to rotate by the driving motor. The rotation of the L-shaped rod will drive the frame to move, the movement of the frame will drive the slide bar to move, the movement of the slide bar will drive the connecting plate to move, the movement of the connecting plate will drive the cross bar to move, the movement of the cross bar will move the movable block, the movement of the movable block will drive the second hook to move, and the movement of the second hook will drive one end of the spring to move, so that the spring can be stretched, avoiding the situation of manual stretching by the staff. Moreover, the device can also stretch multiple springs at the same time, thereby improving the efficiency of spring stretching and forming.

[0004] However, the stretching device uses two hooks to fix and stretch the spring, and is only suitable for stretching springs with hanging rings on both sides. If the spring without hanging rings is stretched by the hooks, the two ends of the spring may be deformed due to the tension, thereby affecting the product quality.

[0005] Based on the above, the purpose of the present invention is to provide a stretching device for spring processing, so as to solve the problem that the spring stretching device in the prior art is only suitable for stretching and forming springs with hanging rings on both sides. Utility Model Content

[0006] In response to the shortcomings of the existing technology, the purpose of the present invention is to provide a stretching device for spring processing. The present invention fixes the two ends of the spring by setting a plurality of clamping claws that can move outward or gather inward synchronously, so that the stretching device can stretch springs without hanging rings and can also adapt to springs of different sizes.

[0007] The above technical objectives of the present utility model are achieved through the following technical solutions: A stretching device for spring processing, comprising a support frame, to which a mounting plate 1 is fixedly connected and a mounting plate 2 is slidably connected, a lifting mechanism for driving the mounting plate 2 to lift and lower is provided on the support frame, a plurality of clamps for clamping the spring are provided on the mounting plate 1 and the mounting plate 2, the positions of the clamps on the mounting plate 1 and the mounting plate 2 correspond, the clamps include more than three clamps, the mounting plate 1 and the mounting plate 2 are provided with guide grooves for inserting and moving the clamps, a linkage mechanism for making the clamps in multiple clamps move synchronously along the guide groove and a driving mechanism for providing power to the linkage mechanism are provided on the support frame.

[0008] By adopting the above technical solution, when the spring needs to be stretched and formed, the spring is placed on the first mounting plate, so that multiple claws in a clamp are surrounded by one end of the spring, and then the second mounting plate is driven down by the lifting mechanism until the second mounting plate contacts the other end of the spring and multiple claws in the corresponding positions are surrounded by this side of the spring, and then the multiple claws on the upper and lower sides are driven to move toward the spring respectively through the cooperation of the driving mechanism and the linkage mechanism until the multiple claws are in contact with the spring and can no longer move. At this time, the two sides of the spring are respectively restricted by multiple claws, and the user then drives the second mounting plate up through the lifting mechanism to stretch the spring.

[0009] The present invention is further configured as follows: the linkage mechanism includes a driving gear 1 and a driving gear 2 which are rotatably connected to the mounting plate 1 and the mounting plate 2 respectively; the mounting plate 1 and the mounting plate 2 are rotatably connected to a plurality of driving discs 1 and 2 respectively; the driving disc 1 and the driving disc 2 are fixedly connected to an outer gear ring 1 and an outer gear ring 2 which are meshed with the driving gear 1 and the driving gear 2 respectively; the driving disc 1 and the driving disc 2 are both provided with a plurality of arc grooves, the number and positions of the arc grooves correspond to the number and positions of the clamping jaws, and the clamping jaws pass through the guide groove and the arc groove at the same time.

[0010] The utility model is further configured as follows: the clamping claw is fixedly connected to a limiting block and a supporting plate, and the first mounting plate and the second mounting plate are provided with limiting grooves for the limiting block to be inserted and moved.

[0011] The utility model is further configured as follows: the driving mechanism includes a motor 1, a transmission shaft is fixedly connected to the output shaft of the motor 1, a transmission sleeve is slidably connected to the transmission shaft, the inner walls of the transmission shaft and the transmission sleeve are both polygonal structures, and the transmission shaft and the transmission sleeve are fixedly connected to the driving gear 1 and the driving gear 2 respectively.

[0012] The utility model is further configured as follows: the lifting mechanism includes a hydraulic rod fixedly connected to the support frame, the extended end of the hydraulic rod is fixedly connected to a connecting frame, and the connecting frame is fixedly connected to the second mounting plate.

[0013] The utility model is further configured as follows: the driving mechanism includes motor 2 and motor 3, the motor 2 is fixedly connected to the ground, the motor 3 is fixedly connected to the connecting frame, and the output shafts of the motor 2 and motor 3 are fixedly connected to the driving gear 1 and the driving gear 2 respectively.

[0014] In summary, the present invention has the following beneficial effects:

[0015] The utility model fixes the two ends of the spring by arranging a plurality of clamping claws that can synchronously move outward or gather inward, so that the stretching device can stretch the spring without a hanging ring and can also adapt to springs of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of embodiment 1 Figure 1 , showing the overall structure of the stretching device;

[0017] Figure 2 For Example 1 Figure 1 The enlarged view of part A shows the positional relationship between the clamping jaws, limit blocks and support plate;

[0018] Figure 3 This is a schematic diagram of the structure of embodiment 1 Figure 2 , showing the positional relationship between the guide groove and the mounting plate;

[0019] Figure 4 This is a schematic diagram of the structure of embodiment 1 Figure 3 , showing the positional relationship between the drive gear and the drive disc;

[0020] Figure 5 This is a structural diagram of Example 2.

[0021] In the figure: 1. Support frame; 2. Mounting plate 1; 3. Mounting plate 2; 4. Clamping jaw; 5. Drive gear 1; 6. Drive gear 2; 7. Drive disc 1; 8. Drive disc 2; 9. Outer gear ring 1; 10. Outer gear ring 2; 11. Guide groove; 12. Arc groove; 13. Limit block; 14. Support plate; 15. Motor 1; 16. Drive shaft; 17. Drive sleeve; 18. Hydraulic rod; 19. Connecting frame; 20. Motor 2; 21. Motor 3. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, unless there is a conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean 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 internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood by those skilled in the art in specific circumstances.

[0025] The present invention will be described in detail below with reference to the accompanying drawings.

[0026] Example 1: A stretching device for spring processing, such as Figures 1 to 4 As shown, it includes a support frame 1, on which a mounting plate 1 2 is fixedly connected and a mounting plate 2 3 is slidably connected, the support frame 1 is provided with a lifting mechanism for driving the mounting plate 2 3 to lift and lower, and a plurality of clamps for clamping the springs are distributed in a circular array on the mounting plate 1 2 and the mounting plate 2 3, and the positions of the clamps on the mounting plate 1 2 and the mounting plate 2 3 correspond, and the clamps include more than three clamps 4, and the mounting plate 1 2 and the mounting plate 2 3 are provided with a guide groove 11 for the clamps 4 to be inserted and moved, and the support frame 1 is provided with a linkage mechanism for making the clamps 4 in multiple clamps move synchronously along the guide groove 11 and a driving mechanism for providing power to the linkage mechanism.

[0027] The linkage mechanism includes a drive gear 1 5 and a drive gear 2 6 which are rotatably connected to the mounting plate 1 2 and the mounting plate 2 3 respectively. A plurality of drive disks 1 7 and drive disks 2 8 are rotatably connected to the mounting plate 1 2 and the mounting plate 2 3 respectively. The drive disks 1 7 and the drive disks 2 8 are fixedly connected with an outer gear ring 1 9 and an outer gear ring 2 10 which are meshed with the drive gear 1 5 and the drive gear 2 6 respectively. A plurality of arcuate grooves 12 are formed on the drive disks 1 7 and the drive disks 2 8. The number and position of the arcuate grooves 12 correspond to the number and position of the clamping jaws 4. The clamping jaws 4 pass through the guide grooves 11 and the arcuate grooves 12 at the same time.

[0028] The clamping jaw 4 is fixedly connected to a limit block 13 and a supporting plate 14 , and both the mounting plate 1 2 and the mounting plate 2 3 are provided with limit slots for the limit block 13 to be inserted and moved.

[0029] The driving mechanism includes a motor 15, the output shaft of the motor 15 is fixedly connected to a transmission shaft 16, and the transmission sleeve 17 is slidably connected to the transmission shaft 16. The inner walls of the transmission shaft 16 and the transmission sleeve 17 are both polygonal structures. The transmission shaft 16 and the transmission sleeve 17 are fixedly connected to the driving gear 1 5 and the driving gear 2 6 respectively.

[0030] The lifting mechanism includes a hydraulic rod 18 fixedly connected to the support frame 1 , a connecting frame 19 fixedly connected to the extended end of the hydraulic rod 18 , and the connecting frame 19 fixedly connected to the mounting plate 2 3 .

[0031] When the spring needs to be stretched and formed, the spring is placed on the mounting plate 1-2, so that the multiple clamping claws 4 in a clamp are surrounded by one end of the spring, and then the mounting plate 2-3 is driven down by the hydraulic rod 18 and the connecting frame 19 until the mounting plate 2-3 contacts the other end of the spring and the multiple clamping claws 4 at the corresponding positions are surrounded by this side of the spring, and then the transmission shaft 16 and the transmission sleeve 17 are driven to rotate by the motor 1-15, and the transmission shaft 16 and the transmission sleeve 17 will respectively drive the driving gear 1-5 and the driving gear 2-6 to rotate, and the driving gear 1-5 and the driving gear 2-6 will respectively rotate through the outer gear ring 1-9 and the outer gear ring 1-9. The gear ring 2 10 drives multiple drive disks 1 7 and drive disk 2 8 to rotate simultaneously. During the rotation process, the drive disk 2 8 will drive multiple clamps 4 to move away from each other along the trajectory of the guide groove 11 through the arc groove 12 until the multiple clamps 4 are in contact with the spring and can no longer move. At this time, the two ends of the spring are respectively restricted by the multiple clamps 4 on the upper and lower sides. At this time, the user drives the mounting plate 2 3 to rise through the hydraulic rod 18, and then stretches the spring. The limit block 13 and the support plate 14 will limit the clamp 4 to prevent the clamp 4 from rotating or separating from the guide groove 11 and the arc groove 12.

[0032] Example 2: Figure 5 As shown, compared with Example 1, the difference of Example 2 lies in the different setting of the driving mechanism. The driving mechanism includes motor 2 20 and motor 3 21. Motor 2 20 is fixedly connected to the ground, motor 3 21 is fixedly connected to the connecting frame 19, and the output shafts of motor 2 20 and motor 3 21 are fixedly connected to drive gear 1 5 and drive gear 2 6 respectively.

[0033] With this arrangement, motor 2 20 and motor 3 21 can respectively drive drive gear 1 5 and drive gear 2 6 to rotate, causing the clamping jaws 4 in the upper and lower clamps to move different distances, thereby enabling the stretching device to stretch and form special-shaped springs such as conical springs.

[0034] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A stretching device for spring processing, characterized in that: The invention comprises a support frame (1), wherein a mounting plate 1 (2) is fixedly connected to the support frame (1) and a mounting plate 2 (3) is slidably connected to the support frame (1), a lifting mechanism for driving the mounting plate 2 (3) to be lifted and lowered is provided on the support frame (1), a plurality of clamps for clamping the spring are provided on the mounting plate 1 (2) and the mounting plate 2 (3), the clamps on the mounting plate 1 (2) and the mounting plate 2 (3) are positioned correspondingly, the clamps include more than three clamps (4), the mounting plate 1 (2) and the mounting plate 2 (3) are provided with guide grooves (11) for the clamps (4) to be inserted and moved, and a linkage mechanism for making the clamps (4) in the plurality of clamps move synchronously along the guide grooves (11) and a driving mechanism for providing power to the linkage mechanism is provided on the support frame (1).

2. A spring processing stretching device according to claim 1, characterized in that: The linkage mechanism comprises a driving gear 1 (5) and a driving gear 2 (6) which are rotatably connected to the mounting plate 1 (2) and the mounting plate 2 (3), respectively; a plurality of driving discs 1 (7) and driving discs 2 (8) are rotatably connected to the mounting plate 1 (2) and the mounting plate 2 (3), respectively; an outer gear ring 1 (9) and an outer gear ring 2 (10) which are meshed with the driving gear 1 (5) and the driving gear 2 (6) are fixedly connected to the driving disc 1 (7) and the driving disc 2 (8), respectively; a plurality of arc grooves (12) are provided on the driving disc 1 (7) and the driving disc 2 (8), the number and position of the arc grooves (12) correspond to the number and position of the clamping jaws (4), and the clamping jaws (4) pass through the guide groove (11) and the arc groove (12) at the same time.

3. A spring processing stretching device according to claim 2, characterized in that: The clamping jaw (4) is fixedly connected to a limiting block (13) and a supporting plate (14); and the first mounting plate (2) and the second mounting plate (3) are provided with limiting grooves for the limiting block (13) to be inserted and moved.

4. A spring processing stretching device according to claim 3, characterized in that: The driving mechanism comprises a motor 1 (15), an output shaft of the motor 1 (15) is fixedly connected to a transmission shaft (16), a transmission sleeve (17) is slidably connected to the transmission shaft (16), the inner walls of the transmission shaft (16) and the transmission sleeve (17) are both polygonal structures, and the transmission shaft (16) and the transmission sleeve (17) are fixedly connected to the driving gear 1 (5) and the driving gear 2 (6) respectively.

5. A spring processing stretching device according to claim 4, characterized in that: The lifting mechanism comprises a hydraulic rod (18) fixedly connected to the support frame (1), a connecting frame (19) fixedly connected to the extended end of the hydraulic rod (18), and the connecting frame (19) fixedly connected to the second mounting plate (3).

6. A spring processing stretching device according to claim 5, characterized in that: The driving mechanism includes a second motor (20) and a third motor (21), wherein the second motor (20) is fixedly connected to the ground, the third motor (21) is fixedly connected to the connecting frame (19), and the output shafts of the second motor (20) and the third motor (21) are fixedly connected to the driving gear 1 (5) and the driving gear 2 (6) respectively.

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