Rotatable welding tool

Abstract

The utility model relates to a rotatable welding tool which comprises a machine frame, a rotating mechanism fixed at the upper end of the machine frame, a bottom plate fixed on the rotating mechanism and a limiting block fixed on the bottom plate, a workpiece is limited through the limiting block and then is welded, the workpiece can be adjusted to an angle which is most convenient to weld through the rotating mechanism, and the welding efficiency is improved. And the rotating mechanism is specially arranged, rapid rotating and locking can be achieved through pushing unlocking and spring resetting, great convenience is brought to a user, rapid and efficient welding of complex workpieces can be achieved through the novel rotatable welding tool, and welding convenience is ensured.

Description

Technical Field

[0001] This utility model relates to the field of welding fixtures, and more particularly to a rotatable welding tooling. Background Technology

[0002] In today's booming manufacturing industry, welding, as a crucial joining process, permeates various industrial sectors. From the construction of large-scale machinery to the assembly of precision electronic products, welding technology is indispensable. However, traditional welding fixtures reveal numerous drawbacks when dealing with complex workpieces. On the one hand, simple, fixed fixtures struggle to meet the multi-angle welding needs of complex-shaped workpieces. For example, in automotive parts manufacturing, some irregularly shaped bracket-like workpieces have multiple welds facing different directions. With conventional fixtures fixed, workers must awkwardly move the workpiece manually, relying on experience, to align the welds. This is not only labor-intensive but also, due to the instability of manual operation, it's difficult to guarantee the welding angle is accurate after each adjustment, resulting in inconsistent welding quality and a high defect rate. On the other hand, the few existing fixtures with rotation functions have inadequately sophisticated rotation structure designs. Some rotary fixtures use bolt-tightening mechanisms, requiring the use of a wrench to loosen, rotate, and tighten the bolts each time, resulting in cumbersome and time-consuming operations that significantly reduce production efficiency. Others employ simple pin-locking mechanisms, but these pins are prone to wear, leading to a risk of workpiece loosening even after locking, affecting welding accuracy. Furthermore, most of these traditional rotary fixtures lack convenient reset functions, failing to quickly return to the initial or designated position, further impacting the smoothness of continuous welding operations. For example, patent CN217371078U discloses a multi-angle adjustment fixture for a welding system, which has the following shortcomings in angle adjustment: it uses motor adjustment, but the motor's locking capability is insufficient, making it difficult to lock when dealing with heavy workpieces, and the motor's adjustment has a certain delay, making it difficult to achieve the most convenient angle. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model aims to provide a rotatable welding fixture that solves the problems existing in the prior art. This welding fixture is equipped with a specially designed rotating mechanism, which is mounted on the upper end of the frame and connected to the base plate that fixes the workpiece. The rotating mechanism allows the workpiece to be flexibly adjusted to any convenient welding angle. Employing a push-to-unlock and spring-reset design, when encountering workpieces such as irregularly shaped automotive brackets with multiple weld seams facing different directions, workers no longer need to awkwardly and laboriously move the workpiece manually. Simply operating the rotating mechanism allows for easy and precise alignment of each weld seam, greatly reducing labor intensity, ensuring the accuracy of the welding angle, thereby improving welding quality and reducing the defect rate.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotatable welding fixture, comprising a frame, a rotating mechanism fixed to the upper end of the frame, a base plate fixed to the rotating mechanism, and a limiting block fixed to the base plate;

[0007] The rotating mechanism includes a housing fixed to the upper end of the frame, a reset bolt fixed to the side of the housing, a support plate mounted on the reset bolt, a first reset spring mounted on the reset bolt, a bearing fixed to the support plate, a main shaft fixed to the bearing, a sliding bearing seat fixed to one end of the main shaft, a fixed shaft fixed to one end of the sliding bearing seat, a drive gear fixed to the other end of the main shaft, a fixed plate fixed to one side of the drive gear, a fastening nut fixed to one side of the fixed plate, a locking gear meshing with the drive gear, and a locking mechanism mounted on the locking gear.

[0008] Preferably, the locking mechanism includes a locking plate fixed to the side of the housing, a guide post fixed to the locking plate, a baffle mounted on the guide post, and a second return spring mounted on the side of the baffle.

[0009] Preferably, the locking plate has a rectangular groove at the front end and a circular groove at the rear end.

[0010] Preferably, the locking gear shaft is a regular hexagon, the distance between opposite sides of the shaft is the width of the rectangular groove, and the length of the diagonal of the shaft is the diameter of the circular groove.

[0011] Preferably, the bearing housing has a symmetrical structure with roller grooves on the top and bottom, roller baffles on the sides of the roller grooves, and rollers inside the roller grooves.

[0012] Preferably, the housing has an internal mounting groove, and the mounting groove has a sliding groove on its side.

[0013] (III) Beneficial Effects

[0014] The purpose of this invention is to provide a rotatable welding fixture that greatly improves the convenience of welding operations. When faced with complex-shaped workpieces, workers can easily adjust the workpiece to the optimal welding angle using its specialized rotating mechanism, eliminating awkward postures and the inefficient manual movement of parts. This allows for precise weld seam positioning, significantly reducing labor intensity and ensuring accurate welding angles, resulting in a substantial decrease in the defect rate and a leap in welding quality. The optimized rotating structure is remarkably effective, eliminating cumbersome bolt tightening operations and employing a push-to-unlock and spring-reset design, combined with a sophisticated locking mechanism. This allows for rapid and smooth spindle rotation and secure workpiece locking, making it an innovative technology with broad application prospects. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0016] Figure 2 This is a schematic diagram of the rotating mechanism in this utility model.

[0017] Figure 3 This is a schematic diagram of the interior of the rotating mechanism in this utility model.

[0018] Figure 4 This is a schematic diagram of the locking mechanism in this utility model.

[0019] Figure 5 This is a schematic diagram of the locking plate in this utility model.

[0020] Figure 6 This is a schematic diagram of the locking gear in this utility model.

[0021] Figure 7 This is a schematic diagram of the bearing housing in this utility model.

[0022] Figure 8 This is a schematic diagram of the outer shell of this utility model.

[0023] In the diagram: 1-Frame, 2-Rotating mechanism, 201-Outer shell, 2011-Mounting groove, 2012-Sliding groove, 202-Reset bolt, 203-Support plate, 204-First reset spring, 205-Bearing, 206-Main shaft, 207-Sliding bearing seat, 2071-Roller groove, 2072-Roller, 2073-Roller baffle, 208-Fixed shaft, 209-Driving gear, 210-Fixed plate, 211-Fasting nut, 212-Locking gear, 2121-Rotating shaft, 213-Locking mechanism, 2131-Locking plate, 2132-Guide post, 2133-Baffle, 2134-Second reset spring, 2135-Rectangular groove, 2136-Circular groove, 3-Base plate, 4-Limiting block. Detailed Implementation

[0024] The following will refer to the appendix in the example of this utility model. Figure 1 - Appendix Figure 8 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] This utility model provides a technical solution: a rotatable welding fixture, including a frame 1, a rotating mechanism 2 fixed to the upper end of the frame 1, a base plate 3 fixed to the rotating mechanism 2, and a limiting block 4 fixed to the base plate 3. The frame 1 serves as the basic support structure of the entire welding fixture. It supports components such as the rotating mechanism 2, the base plate 3, and the limiting block 4, providing a stable installation foundation for the entire device and ensuring that the welding quality is not affected by factors such as shaking during the welding process. This ensures the stability of the device and allows other components to work normally. The rotating mechanism 2 is used to realize the rotation of the base plate 3 and the workpiece placed on the base plate 3, and can quickly lock the rotated position, making it convenient for the user to adjust the workpiece to the most suitable welding angle. This improves the convenience of welding and can adapt to the welding needs of complex workpieces at different angles. The base plate 3 is fixed to the rotating mechanism 2, provides an installation position for the limiting block 4, and is used to place the workpiece. It rotates with the rotation of the rotating mechanism 2, causing the workpiece to adjust its angle. The limiting block 4 is fixed on the base plate 3 to limit the workpiece on the base plate 3, preventing displacement of the workpiece during welding and ensuring welding accuracy. This ensures the workpiece remains in a fixed position during welding, improving welding quality.

[0026] The rotating mechanism 2 includes a housing 201 fixed to the upper end of the frame 1, a reset bolt 202 fixed to the side of the housing 201, a support plate 203 mounted on the reset bolt 202, a first reset spring 204 mounted on the reset bolt 202, a bearing 205 fixed to the support plate 203, a main shaft 206 fixed to the bearing 205, a sliding bearing seat 207 fixed to one end of the main shaft 206, a fixed shaft 208 fixed to one end of the sliding bearing seat 207, a drive gear 209 fixed to the other end of the main shaft 206, and a fixed shaft 208 on the drive gear. The rotating mechanism includes a fixed plate 210 on one side of wheel 209, a fastening nut 211 fixed to one side of the fixed plate 210, a locking gear 212 meshing with the drive gear 210, and a locking mechanism 213 mounted on the locking gear 212. The outer casing 201 serves as the external protective structure for the rotating mechanism. It also has a mounting groove 2011 and a sliding groove 2012 on the side near the base plate 3 for mounting other components, providing a relatively enclosed space for the entire rotating mechanism. This protects the internal parts and provides positioning and guidance for the installation and movement of the parts, ensuring the normal operation of the rotating mechanism. The reset bolt 202 provides a mounting position for the support plate 203 and the first reset spring 204, and plays a crucial role in the unlocking and reset process of the rotating mechanism 2. Through its position and connection, it allows the support plate 203 to move within a certain range. It participates in the unlocking and reset actions of the rotating mechanism 2, ensuring the flexibility of rotation. The support plate 203 is used to mount the bearing 205 and transmits the reset force of the first reset spring 204 to the drive gear 209, causing the drive gear 209 to reset. Bearing 205 is mounted on support plate 203 to support spindle 206, reducing friction during spindle rotation and ensuring smooth rotation. This ensures smooth spindle rotation, reduces energy loss and component wear. Spindle 206 is a core component of the rotating mechanism, connected at one end to sliding bearing seat 207 and fixed shaft 208, and at the other end to drive gear 209. It rotates with the support of bearing 205, thereby rotating base plate 3 and the workpiece placed on it. This rotation of the workpiece facilitates adjustment of the welding angle. Sliding bearing seat 207 provides a mounting position for fixed shaft 208, supports the weight of base plate 3 and the workpiece above it, and allows spindle 206 to slide, enabling locking and unlocking. One end of the fixed shaft 208 is connected to the main shaft 206, and the other end is connected to the base plate 3, used to fix the base plate 3. The drive gear 209 is used to lock the rotation of the main shaft 206. It cooperates with the locking gear 212 to lock the base plate 3. The fixed plate 210 cooperates with the fastening nut 211 to firmly fix the drive gear 209 on the main shaft 206, preventing the drive gear 209 from axial displacement during rotation. The locking gear 212 meshes with the drive gear 209. Under normal conditions, its position is locked by the locking mechanism 213 to prevent the main shaft 206 from rotating. When rotation is required, it rotates under the push of the drive gear 209, thereby unlocking the rotation mechanism 2.The locking mechanism 213 is used to lock and unlock the locking gear 212. Under normal conditions, the locking mechanism 213 fixes the locking gear 212 to prevent it from rotating; when rotation is required, external force is applied to release the locking mechanism 213 from the locking gear 212, thus enabling rotation. This ensures the locking and unlocking functions of the rotating mechanism 2, facilitating the adjustment of the workpiece angle.

[0027] The locking mechanism 213 includes a locking plate 2131 fixed to the side of the housing 201, a guide post 2132 fixed to the locking plate 2131, a baffle 2133 mounted on the guide post 2132, and a second return spring 2134 mounted on the side of the baffle 2133. The locking plate 2131, as the main support structure of the locking mechanism, has a rectangular groove 2135 and a circular groove 2136 inside, which cooperate with the rotating shaft 2121 of the locking gear 212 to achieve locking and unlocking functions. It provides the foundation for the operation of the locking mechanism 213 and controls the state of the locking gear 212. The guide post 2132 provides an installation and guiding position for the baffle 2133, allowing the baffle to move on the guide post 2132, thereby driving the extension and retraction of the second return spring 2134. The baffle 2133 moves on the guide post 2132 and cooperates with the second return spring 2134. When subjected to external force, it pushes the second return spring 2134 to compress, releasing the lock on the locking gear 212. When the external force disappears, it returns to its original position under the action of the second return spring 2134, relocking the locking gear 212. This ensures the correct movement of the baffle and allows the locking mechanism to work normally. The second return spring 2134 stores energy when the baffle 2133 moves. When the external force disappears, it uses the stored energy to push the baffle 2133 back to its original position, thereby relocking the locking gear 212.

[0028] The locking plate 2131 has a rectangular groove 2135 at the front end and a circular groove 2136 at the rear end. When the baffle 2133 is not under force, the locking gear 212 is located in the rectangular groove 2135, the locking gear 2135 is locked, and it cooperates with the drive gear 209 to lock the base plate 3. When the locking gear 212 is pushed into the circular groove 2135, the locking gear 212 is unlocked, the drive gear 209 can be rotated, and the base plate 3 can also be rotated freely.

[0029] The locking gear 212 has a regular hexagonal shaft 2121. The distance between opposite sides of the shaft 2121 is the width of the rectangular groove 2135, and the length of the diagonal of the shaft 2121 is the diameter of the circular groove 2136. This configuration of the shaft 2121 ensures that it is locked by the rectangular groove 2135 and can rotate stably when the shaft 2121 falls into the circular groove 2136.

[0030] The bearing housing 207 has a symmetrical structure with roller grooves 2071 on the top and bottom. Roller baffles 2073 are provided on the side of the roller grooves 2071, and rollers 2072 are provided inside the roller grooves 2071. The roller grooves 2071 are used to accommodate the rollers 2072, and the baffles 2073 can prevent the rollers 2072 from falling off during rolling.

[0031] The housing 201 has an installation groove 2011 inside, and a sliding groove 2012 is provided on the side of the installation groove 2011; the installation groove 2011 facilitates the installation of the bearing seat 207, and the roller 2071 slides in the sliding groove 2012.

[0032] Working principle:

[0033] Initial locked state

[0034] In the initial state of the equipment, the shaft 2121 of the locking gear 212 is located in the rectangular groove 2135 of the locking plate 2131. At this time, since the width of the rectangular groove 2135 is equal to the distance between opposite sides of the shaft 2121, the locking gear 212 cannot rotate, and the locking gear 212 meshes with the driving gear 209, restricting the rotation of the driving gear 209, thereby preventing the main shaft 206 from rotating, and locking the base plate 3 and the workpiece on it in a fixed position.

[0035] The baffle 2133 is in its initial position under the action of the second return spring 2134, which locks the locking gear 212.

[0036] Unlocking process

[0037] When the workpiece on the base plate 3 needs to be rotated to adjust the welding angle, the base plate 3 is pushed, causing force to be applied to the baffle 2133. The baffle 2133 moves under the guidance of the guide post 2132, compressing the second return spring 2134.

[0038] As the baffle 2133 moves, the shaft 2121 of the locking gear 212, which was originally located in the rectangular groove 2135, is pushed from the rectangular groove 2135 into the circular groove 2136. Because the diameter of the circular groove 2136 is equal to the diagonal length of the shaft 2121, the locking gear 212 can rotate freely after the shaft 2121 enters the circular groove 2136, thereby unlocking the rotating mechanism.

[0039] Rotation process

[0040] After unlocking, the drive gear 209 is no longer restricted by the locking gear 212. Since one end of the spindle 206 is connected to the drive gear 209, the spindle 206 can rotate with the support of the bearing 205.

[0041] The rotation of the spindle 206 drives the sliding bearing seat 207 and the fixed shaft 208 at one end to rotate. The fixed shaft 208 is connected to the base plate 3, thereby causing the base plate 3 and the workpiece on it to start rotating.

[0042] Reset and relocking process

[0043] Once the workpiece has rotated to the appropriate welding angle, the external force on the baffle 2133 is removed. At this point, the second return spring 2134 releases its stored energy, pushing the baffle 2133 back to its initial position.

[0044] As the baffle 2133 is reset, the shaft 2121 of the locking gear 212 is pushed from the circular groove 2136 back into the rectangular groove 2135, thus relocking the locking gear 212.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotatable welding fixture, characterized in that, It includes a frame (1), a rotating mechanism (2) fixed to the upper end of the frame (1), a base plate (3) fixed to the rotating mechanism (2), and a limiting block (4) fixed to the base plate (3). The rotating mechanism (2) includes a housing (201) fixed to the upper end of the frame (1), a reset bolt (202) fixed to the side of the housing (201), a support plate (203) mounted on the reset bolt (202), a first reset spring (204) mounted on the reset bolt (202), a bearing (205) fixed to the support plate (203), a main shaft (206) fixed to the bearing (205), a sliding bearing seat (207) fixed to one end of the main shaft (206), a fixed shaft (208) fixed to one end of the sliding bearing seat (207), a drive gear (209) fixed to the other end of the main shaft (206), a fixed plate (210) fixed to one side of the drive gear (209), a fastening nut (211) fixed to one side of the fixed plate (210), a locking gear (212) meshing with the drive gear (209), and a locking mechanism (213) mounted on the locking gear (212).

2. The rotatable welding fixture according to claim 1, characterized in that, The locking mechanism (213) includes a locking plate (2131) fixed to the side of the housing (201), a guide post (2132) fixed to the locking plate (2131), a baffle (2133) mounted on the guide post (2132), and a second return spring (2134) mounted on the side of the baffle (2133).

3. The rotatable welding fixture according to claim 2, characterized in that, The locking plate (2131) has a rectangular groove (2135) at the front end and a circular groove (2136) at the rear end.

4. The rotatable welding fixture according to claim 1, characterized in that, The locking gear (212) shaft (2121) is a regular hexagon, the distance between the sides of the shaft (2121) is the width of the rectangular groove (2135), and the length of the diagonal of the shaft (2121) is the diameter of the circular groove (2136).

5. A rotatable welding fixture according to claim 1, characterized in that, The bearing housing (207) has a symmetrical structure with roller grooves (2071) on the top and bottom. Roller baffles (2073) are provided on the side of the roller grooves (2071), and rollers (2072) are provided inside the roller grooves (2071).

6. A rotatable welding fixture according to claim 1, characterized in that, The housing (201) has an internal mounting groove (2011) and a sliding groove (2012) on the side of the mounting groove (2011).

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