A compression spring device

Abstract

This invention relates to the field of spring processing technology, specifically a compression spring device. The device includes: a frame; a base plate disposed on the frame, with a working end formed on the front side of the base plate; a transfer device movably disposed on the front side of the base plate, the transfer device having a tooling structure for loading springs, the transfer device being used to transport vertically positioned springs to or from the working end; and a pressing device disposed on the frame, the pressing device having a clamping structure capable of longitudinally compressing the springs at the working end. This invention helps solve the problem of existing spring pre-compression equipment where springs are horizontally positioned and easily become entangled and twisted during loading and unloading.

Description

Technical Field

[0001] The invention relates to the field of spring processing technology, and in particular to a compression spring device. Background Technology

[0002] A spring is a mechanical part that works by utilizing elasticity; a part made of elastic material deforms under the action of external force and returns to its original shape after the external force is removed; it is generally made of spring steel; there are many types of springs, which can be classified by shape as helical springs, spiral springs, leaf springs, and special-shaped springs; in the spring production process, the spring needs to be pre-compressed to eliminate internal stress.

[0003] During the production of umbrellas, a long spring is installed inside the umbrella frame. This spring also needs to undergo pre-compression during production. However, many current pre-compression devices for long springs pre-compress the spring horizontally. For example, Chinese Patent CN207857744U discloses a spring pre-compression machine, which includes a frame and an electrical control box inside the frame. A feeding device is located at the top of the frame, with a pressing device on one side, a blocking device above, and a feeding hopper below. The pressing device includes a pressing cylinder fixed to the frame, connected to a positioning plate via a push rod. The positioning plate has at least five internal positioning pins evenly distributed, with the other end of each pin passing through a pressure head. The lower end of the pressure head is connected to a linear guide assembly, and the side is connected to a pin cylinder, which is parallel to the internal positioning pins.

[0004] The inventors discovered that in practical use, this horizontally placed spring oscillation method easily leads to multiple springs becoming entangled and twisted. This is because the adjacent spacing between multiple horizontally placed springs is not large for easy loading and unloading. However, during manual loading, springs are typically bundled, placed uniformly, and then individually adjusted. During this process, because the springs are horizontally placed and pressed against the placement station, their relatively long lateral length makes them prone to oscillation across different placement stations, causing them to come into contact with other springs and become entangled and twisted due to their spiral structure. This requires operators to expend considerable effort to manage the materials during loading, making the pre-compression operation time-consuming and labor-intensive. Therefore, a new type of compression spring device is urgently needed to solve these problems. Summary of the Invention

[0005] The purpose of this invention is to provide a compression spring device that helps to solve the problem that existing spring pre-compression devices are prone to tangling and twisting during loading and unloading due to the horizontal placement of the springs.

[0006] To achieve the above objectives, the invention adopts the following technical solution:

[0007] A compression spring device, the device comprising:

[0008] frame;

[0009] A substrate is disposed on the frame, and a working end is formed on the front side of the substrate;

[0010] A transfer device is movably disposed on the front side of the substrate. The transfer device has a tooling structure for loading springs. The transfer device is used to transport the vertically positioned springs to or away from the working end.

[0011] A pressing device is mounted on the frame, and the pressing device is equipped with a clamping structure that can longitudinally compress the spring at the working end.

[0012] Based on the above technical solution, the frame is provided with a limiting structure for limiting the spring during transport and / or compression.

[0013] Based on the above technical solution, the transfer device includes a fixing component connected to the frame, a rotating shaft pivotally connected to the fixing component, a rotating drive component connected to the rotating shaft, and a moving component provided on the rotating shaft. The moving component is provided with a work station slot for loading springs, and the rotating shaft can drive the moving component to rotate and transport the springs fixed in the work station slot to or away from the working end.

[0014] Based on the above technical solution, the pressing device includes a support base, and a lifting drive component is connected above the support base. The lifting drive component can drive the support base to move longitudinally. A top plate adapted to the support base is provided above the working end. The top plate is fixedly connected to the frame. When the support base moves upward, it can work with the top plate to form the clamping structure.

[0015] Based on the above technical solution, the limiting structure includes a first limiting device located above the working end. The first limiting device is provided with a vertical insertion rod. The insertion rod is connected to a plug-in driving member. The plug-in driving member can drive the insertion rod to descend and insert into the inner cavity of the spring located at the working end, thereby forming a compression limiting structure for the spring.

[0016] Based on the above technical solution, the limiting structure further includes a second limiting device located below the transfer device. The second limiting device includes limiting rings spaced apart from each other, with a material feeding gap between the limiting rings. The material feeding gap constitutes a spring transfer limiting structure. The material feeding gap has an inlet / outlet opening at its outer end and a baffle plate at its inner end. The front sidewall of the baffle plate is used to abut against the bottom of the spring located at the working end to keep the spring vertical.

[0017] Based on the above technical solution, a limiting plate is provided on the front side of the baffle plate, and the limiting plate is connected to a forward and backward moving drive component so that the limiting plate can move closer to or away from the baffle plate. A limiting groove adapted to the spring is provided on the rear end of the limiting plate, and the limiting groove can form a constraint structure with the baffle plate at the bottom of the working end spring.

[0018] Compared to existing technologies, the invention has at least the following advantages:

[0019] The invention uses longitudinal compression instead of the traditional transverse compression method, making full use of the natural drooping of the long springs to automatically straighten them independently. This avoids the transverse springs, which cause each area of ​​the spring to be supported by the load, making it easy for the springs in each area to swing laterally, resulting in the springs becoming entangled and twisted together. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a compression spring device in one embodiment;

[0021] Figure 2 for Figure 1 Side view;

[0022] Figure 3 This is a schematic diagram of the transfer device in one embodiment;

[0023] Figure 4 for Figure 3 Top view;

[0024] Figure 5 This is a schematic diagram of the bottom structure of the transfer device in one embodiment;

[0025] Figure 6 This is a schematic diagram of the structure of the second limiting device in one embodiment;

[0026] Figure 7 for Figure 6 Top view;

[0027] Figure 8 This is a schematic diagram of the limiting groove limiting the spring in one embodiment;

[0028] Figure 9 This is a schematic diagram of a structure with a spring mounted at the feed end in one embodiment;

[0029] Figure 10 This is a schematic diagram of a structure in one embodiment where springs are installed at both the feeding end and the working end;

[0030] Figure 11 This is a schematic diagram of the structure of the support base in one embodiment.

[0031] The diagram is labeled as follows: 1. Frame; 11. Base; 12. Support; 2. Base plate; 21. Pad; 22. First cylinder; 3. Transfer device; 31. Fixing component; 32. Moving component; 33. Rotating shaft; 34. Bushing; 35. Material clamping plate; 351. Station slot; 36. Second cylinder; 37. Transmission component; 371. Rack; 372. Gear; 373. Limiting block; 38. Swinging block; 39. Positioning block; 4. Pressing device; 41. Lifting rod; 42. Guide rod; 43. Bearing seat; 44. Positioning hole; 45. Third cylinder; 5. First limiting device; 51. Insert rod; 52. Top plate; 6. Second limiting device; 61. Inner limiting ring; 62. Outer limiting ring; 63. Baffle plate; 631. Through hole; 64. Fourth cylinder; 65. Limiting plate; 651. Limiting groove; 66. Material feeding gap; 67. Inlet / outlet opening; 68. Fifth cylinder; a. Spring. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the invention clearer, a detailed description is provided below in conjunction with the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a full understanding of the invention. However, the invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] like Figure 1 and Figure 2 As shown, this embodiment discloses a compression spring device for pre-compression processing of long springs. The device includes a frame 1, a base plate 2, a transfer device 3, a pressing device 4, and a limiting structure.

[0035] The frame 1 includes a base 11 and a support 12. The base 11 is placed horizontally against the floor, and the support 12 is erected vertically on the base 11. The two form an inverted T-shaped structure. The base 11 and the support 12 are both made of aluminum alloy profiles and serve as the main skeleton structure, playing the role of bearing support and providing assembly space.

[0036] The substrate 2 is disposed on the frame 1. Specifically, the substrate 2 is a strip-shaped plate structure, which is fixedly assembled to the front side of the bracket 12 by bolts. The front side wall of the substrate 2 is a vertical flat end face, which is used to abut against the spring a at the compression station to form the working end.

[0037] Furthermore, such as Figure 2 As shown, a pad 21 is laminated on the resin flat end surface on the front side of the substrate 2. In this embodiment, the pad 21 is made of rubber and is used to provide elastic support to prevent the spring a from being radially deformed due to rigid collision. In addition, a first cylinder 22 is provided on the rear side of the substrate 2. The first cylinder 22 can drive the substrate 2 to move horizontally back and forth, which helps to make fine adjustments to the front and back positions at the working end, thereby accurately abutting and fixing the spring a to be compressed.

[0038] The transfer device 3 is movably disposed on the front side of the substrate 2. The transfer device 3 has a tooling structure for loading spring a. The transfer device 3 is used to transport the vertical spring a to or away from the working end.

[0039] Specifically, in combination Figure 3-5 The transfer device 3 includes a fixing member 31 connected to the frame 1. The fixing member 31 is a horizontally arranged plate structure. Its top extends to the rear side via two rods and is fixed to the bracket 12. A rotating shaft 33 is pivotally connected to the fixing member 31. The rotation axis 33 of the rotating shaft 33 is vertically arranged. The rotating shaft 33 longitudinally passes through the fixing member 31. The top of the rotating shaft 33 is connected to the fixing member 31 via a bushing 34. The bottom of the rotating shaft 33 extends below the fixing member 31 and is connected to a rotation drive component. A moving component is provided on the rotating shaft 33. The moving component is specifically... The horizontally positioned plate structure extends the assembly position. The outer end of the moving part is equipped with a clamping plate 35. Two clamping plates 35 are symmetrically arranged around the central axis of the rotating shaft 33. The outer end of the clamping plate 35 has a work station groove 351 for loading spring a. Multiple work station grooves 351 are arranged side-by-side. The outer end of the work station groove 351 is open, allowing spring a to enter. When the work station groove 351 carrying spring a is at the working end, the base plate 2 moves forward and abuts against the outer side of the work station groove 351, forming a radial limiting and fixing structure for spring a at that position. This open structure has a constricted opening for clamping and fixing spring a, completing a quick tooling for spring a. The rotating shaft 33 can drive the moving part 32 to rotate and transport spring a fixed in the work station groove 351 to or away from the working end.

[0040] Furthermore, such as Figure 5As shown, the rotary drive includes a second cylinder 36, and the output end of the second cylinder 36 is connected to a transmission component 37. The transmission component 37 includes a rack 371, a gear 372, and a limiting block 373. During operation, the telescopic rod of the second cylinder 36 extends and retracts, driving the rack 371 to move laterally. The rack 371 meshes with the transmission gear 372 to rotate in both directions. The limiting block 373 helps to keep the lateral movement of the rack 371 stable and reliable. The gear 372 is fixed on the rotating shaft 33 and can drive the rotating shaft 33 to rotate. In order to meet the transfer requirements of material feeding and discharging, two positioning blocks 39 are fixedly provided at the bottom of the fixing part 31 on both sides of the rotating shaft 33. A swing block 38 is fixedly provided on the rotating shaft 33. The swing block 38 will rotate with the rotating shaft 33. When rotating to the sides, the swing block 38 can form a locking structure with the positioning blocks 39 on both sides respectively, and repeatedly rotate 180 degrees forward and backward. This is reflected in the two clamping plates 35 above as repeated 180-degree forward and backward rotation, so as to realize the spring a on the two clamping plates 35 entering and exiting the working end.

[0041] The pressing device 4 is mounted on the frame 1, and the pressing device 4 is equipped with a clamping structure that can longitudinally compress the spring a at the working end.

[0042] Specifically, in combination Figure 11 The pressing device 4 includes a support base 43. A lifting drive component is connected above the support base 43, which can drive the support base 43 to move longitudinally. The lifting drive component includes a vertical lifting rod 41. The bottom of the lifting rod 41 is connected and fixed to the support base 43, and is used to drive the support base 43 to move up and down. A lifting cylinder is connected to the top of the lifting rod 41. The lifting cylinder is fixed on the bracket 12 and serves as the driving source for the lifting rod 41. Guide rods 42 are provided on both sides of the lifting rod 41 to guide. A top plate 52 adapted to the support base 43 is provided above the working end. The top plate 52 is fixedly connected to the frame 1. When the support base 43 moves upward, it can work with the top plate 52 to form the clamping structure. During operation, the support base 43 moves upward, and the top plate 52 remains stationary. The longitudinal distance between the two decreases, which allows the spring a located at the working end to be longitudinally compressed to complete the pre-compression processing.

[0043] Furthermore, such as Figure 11 As shown, the support base 43 adopts a three-layer stacked structure, consisting of a top layer, a middle layer, and a bottom layer. The top and middle layers are fixedly connected and then connected to the lifting rod 41, allowing them to rise and fall with the lifting rod 41. The middle layer has multiple positioning holes 44 arranged side by side, with each positioning hole 44 penetrating the middle layer longitudinally and corresponding to a spring a located at the working end. The bottom layer has a third cylinder 45 at its bottom. The telescopic rod of the third cylinder 45 extends vertically upwards and passes through the bottom layer. The extension and retraction of the telescopic rod causes the top of the telescopic rod to form the lowest position adjustment structure for the top and middle layers.

[0044] The frame 1 is equipped with a limiting structure for limiting the spring a during transport and compression.

[0045] Specifically, the limiting structure includes a first limiting device 5 located above the working end. The first limiting device 5 has multiple insertion rods 51 corresponding one-to-one with the workstation slots 351. The insertion rods 51 are vertically arranged and connected to an insertion drive component, specifically a cylinder structure. The insertion drive component can drive the insertion rods 51 vertically downwards to insert into the inner cavity of the spring a located at the working end, forming a compression limiting structure for the spring a. It should be noted that the insertion rods 51 pass through the through holes on the top plate 52. Another function of the top plate 52 is to limit the longitudinal movement of the insertion rods 51. During operation, after the bottom of the insertion rod 51 descends, it can pass through the positioning hole 44. Therefore, the top plate 52 and the support seat 43 form a guiding and limiting structure for the insertion rods 51 at both the upper and lower positions, ensuring the longitudinal movement of the insertion rods 51 remains directionally stable.

[0046] Furthermore, in combination Figure 6-8 The limiting structure also includes a second limiting device 6 located below the transfer device 3. The second limiting device 6 includes limiting rings spaced apart from each other, namely an inner limiting ring 61 and an outer limiting ring 62. The inner limiting ring 61 is a plate with a circular outline, and the outer limiting ring 62 is composed of two plates with arc-shaped outlines. The inner limiting ring 61 and the outer limiting ring 62 are connected to the base 11 by a rod. There is a material feeding gap 66 between the inner limiting ring 61 and the outer limiting ring 62. The material feeding gap 66 constitutes the spring a transfer limiting structure. The material feeding gap 66 has an inlet / outlet opening 67 at its outer end and a baffle plate 63 at its inner end. The baffle plate 63 is a vertical plate structure. The front sidewall of the baffle plate 63 is used to abut against the bottom of the spring a at the working end so that the spring a remains vertical. A fifth cylinder 68 is provided on the rear side of the baffle plate 63. The fifth cylinder 68 can drive the baffle plate 63 to move horizontally back and forth, which is used to fine adjust the initial position of the baffle plate 63 so that the spring a after being limited can remain vertical and not deviate.

[0047] Furthermore, the baffle plate 63 is provided with a through hole 631, and the insertion hole passes through the baffle plate 63 from front to back. A limiting plate 65 is provided on the front side of the baffle plate 63, and the limiting plate 65 is connected to a forward and backward moving drive component. In this embodiment, the forward and backward moving drive component is specifically a fourth cylinder 64, so that the limiting plate 65 can move closer to or away from the baffle plate 63. The rear end of the limiting plate 65 is provided with a limiting groove 651 adapted to spring a, such as... Figure 8As shown, the limiting groove 651 can form a constraint structure with the baffle plate 63 at the bottom of the working end spring a, so that the springs a at the working end can be separated one by one at the bottom and kept vertical, which facilitates the insertion operation of the insertion rod 51 from top to bottom.

[0048] In a specific embodiment, combined with Figure 9 and 10 The operator first inserts the top of the first batch of springs a vertically into the work slot 351 of the clamping plate 35. The transfer device 3 then transfers the springs a to the working end. The first cylinder 22 drives the base plate 2 forward to further fix the springs a. During this process, the bottom of the springs a moves to the inner end along the material feeding gap 66. The fourth cylinder 64 drives the limiting plate 65 backward to position the bottom of the springs a, so that the springs a remain in a stable vertical state. After the upper and lower positioning of the springs a is completed, the insertion rod 51 in the first limiting device 5 moves downward through the inner cavity of the springs a. After the insertion rod 51 passes through the springs a, its bottom passes through the positioning hole 44 on the bearing seat 43, completing the upper and lower positioning of the insertion rod 51. The function of the insertion rod 51 is... The mechanism ensures that spring a remains longitudinally stable during compression. Subsequently, the bearing seat 43 in the pressing device 4 moves upward to compress spring a, achieving pre-compression processing. During this process, the insert rod 51 also guides the upward movement of the bearing seat 43, making its upward direction more stable. After compression, the bearing seat 43 moves downward to reset, the insert rod 51 moves upward to reset, the limit plate 65 moves forward to reset, and the transfer device 3 rotates in the opposite direction to transport the pre-compressed spring a to the inlet / outlet opening 67. During this process, another batch of spring a is loaded on another clamping plate 35 and enters the working end for the next work cycle. The operator unloads the pre-compressed batch of spring a and replaces it with new spring a for the next work cycle, and so on.

[0049] The above embodiments are only used to illustrate the technical solutions of the invention, and are not intended to limit it. Although the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the invention.

Claims

1. A compression spring device, characterized in that, The device includes: Rack (1); The substrate (2) is disposed on the frame (1). The front side of the substrate (2) forms a working end, and the rear side of the substrate (2) is provided with a first cylinder (22). The first cylinder (22) can drive the substrate (2) to move horizontally back and forth so that the substrate (2) can adjust its position back and forth at the working end, thereby abutting and fixing the spring (a) to be compressed. The transfer device (3) is movably disposed on the front side of the substrate (2). The transfer device (3) has a tooling structure for loading the spring (a). The transfer device (3) is used to transport the vertical spring (a) to or away from the working end. The pressing device (4) is provided on the frame (1), and the pressing device (4) is provided with a clamping structure that can longitudinally compress the spring (a) at the working end; The frame (1) is provided with a limiting structure for limiting the spring (a) during transport and / or compression. The transfer device (3) includes a fixing member (31) connected to the frame (1), a rotating shaft (33) is pivotally connected to the fixing member (31), the rotating shaft (33) is connected to a rotation drive member, and a movable member (32) is provided on the rotating shaft (33). The movable member (32) is provided with a work station slot (351) for loading the spring (a). The rotating shaft (33) can drive the movable member (32) to rotate the spring (a) fixed in the work station slot (351) to or away from the working end. The limiting structure includes a second limiting device (6) located below the transfer device (3). The second limiting device (6) includes limiting rings spaced apart from each other. There is a material feeding gap (66) between the limiting rings. The material feeding gap (66) constitutes a spring (a) transfer limiting structure. The material feeding gap (66) has an inlet / outlet opening (67) at its outer end and a baffle plate (63) at its inner end. The front side wall of the baffle plate (63) is used to abut against the bottom of the spring (a) located at the working end so that the spring (a) remains vertical.

2. The compression spring device according to claim 1, characterized in that, The pressing device (4) includes a support seat (43), and a lifting drive is connected above the support seat (43). The lifting drive can drive the support seat (43) to move longitudinally. A top plate (52) adapted to the support seat (43) is provided above the working end. The top plate (52) is fixedly connected to the frame (1). When the support seat (43) moves upward, it can work with the top plate (52) to form the clamping structure.

3. The compression spring device according to claim 1, characterized in that, The limiting structure also includes a first limiting device (5) located above the working end. The first limiting device (5) is provided with a vertical insertion rod (51). The insertion rod (51) is connected to a plug-in driving member. The plug-in driving member can drive the insertion rod (51) to descend and insert into the inner cavity of the spring (a) located at the working end, thus forming a compression limiting structure for the spring (a).

4. A compression spring device according to claim 3, characterized in that, The front side of the baffle plate (63) is provided with a limiting plate (65), and the limiting plate (65) is connected to a front and rear moving drive component so that the limiting plate (65) can move closer to or away from the baffle plate (63). The rear end of the limiting plate (65) is provided with a limiting groove (651) that is adapted to the spring (a). The limiting groove (651) can form a constraint structure with the baffle plate (63) at the bottom of the working end spring (a).

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