CN221696693U - Circumferential fastening fixture - Google Patents

Abstract

The utility model discloses a circumferential fastening clamp, and belongs to the technical field of machining. The circumferential fastening clamp comprises an elbow splint, a first elbow splint and a clamping mechanism; the first elbow clamp is arranged on the elbow clamp plate through a support, and a fixed seat is arranged on the elbow clamp plate; the first elbow clamp is provided with the clamping mechanism, and the clamping mechanism is positioned above the fixing seat; the clamping mechanism comprises a connecting block, a bearing seat and a one-way bearing, wherein the bearing seat is connected with the first elbow clamp through the connecting block, the one-way bearing is rotatably arranged in the bearing seat, and a mounting hole is formed in the one-way bearing. According to the utility model, the unidirectional bearing is skillfully utilized to carry out circumferential limiting fixation on the part, so that the part cannot generate circumferential rotation in the screwing process, the accuracy of screwing operation is improved, the assembly efficiency is high, and the assembly effect is good.

Description

Circumferential fastening fixture

Technical Field

The utility model relates to the technical field of mechanical processing, in particular to a circumferential fastening clamp.

Background Art

In the field of mechanical processing, it is often necessary to use tooling fixtures to clamp and fix products before screwing in screws to assemble parts. However, for parts that can rotate circumferentially relative to the products, since the fixtures only clamp and fix the products and do not have a limiting and fixing effect on the parts, the parts are prone to circumferential rotation when the screws are screwed in, causing the screw-tightening structure to be misaligned with the screw holes of the parts, thereby affecting the accuracy of the screw-tightening operation, resulting in reduced production efficiency and poor assembly results. For example, on a valve manufacturing and processing production line, workers manually tighten the screws on the sealing ring of a gas pressure reducing valve to ensure that the pressure reducing valve can function normally and stably. In the traditional manual screw tightening operation, workers need to place the screws in the screw holes of the sealing rings, and use a hand-held torque wrench to rotate the outer ring of the screws to tighten the screws. However, since the cylindrical sealing ring can rotate circumferentially relative to the housing of the gas pressure reducing valve, the sealing ring rotates in the tightening direction at the same time under the action of external force when tightening the screws, making it difficult to align the screws with the screw holes and tighten the screws. One hand must fix the sealing ring and the other hand must align the screws and pre-tighten them to the screw holes before the torque wrench is used to tighten the screws. This not only makes alignment difficult, but also results in low assembly efficiency and poor assembly results, which easily increases the defective rate.

Therefore, it is necessary to develop a circumferential fastening fixture that can limit and fix circumferentially rotatable parts to improve the accuracy of screwing operations and assembly efficiency.

Utility Model Content

In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a circumferential fastening fixture suitable for assembling circumferentially rotatable parts, which can circumferentially limit and fix the parts so that they will not produce circumferential rotation during the screwing process, thereby improving the accuracy of the screwing operation, high assembly efficiency and good assembly effect.

In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

A circumferential fastening clamp comprises a toggle clamp, a first toggle clamp and a clamping mechanism; the first toggle clamp is installed on the toggle clamp via a support, and a fixed seat is provided on the toggle clamp; the clamping mechanism is provided on the first toggle clamp, and the clamping mechanism is located above the fixed seat; the clamping mechanism comprises a connecting block, a bearing seat and a one-way bearing, the bearing seat is connected to the first toggle clamp via the connecting block, the one-way bearing is rotatably arranged in the bearing seat, and a mounting hole is provided on the one-way bearing.

As a preferred embodiment of the utility model, the connecting block extends from the first elbow clamp to the direction of the bearing seat; the bearing seat and the connecting block are rotatably connected so that the bearing seat can be flipped around the extension direction of the connecting block.

As a preferred embodiment of the utility model, the first toggle clamp includes an articulated seat, a handle, a connecting rod and a movable rod; the movable rod and the handle are respectively movably connected to the articulated seat, and the movable rod and the handle are movably connected via a connecting rod.

As a preferred embodiment of the present invention, the bearing seat is arranged at the bottom of the movable rod through a connecting block.

As a preferred embodiment of the utility model, the circumferential fastening clamp further comprises a second toggle clamp and a pressing block, wherein the second toggle clamp is mounted on the toggle clamp plate via a supporting seat, and the pressing block is fixedly mounted on the second toggle clamp.

As a preferred embodiment of the present invention, the structure of the second toggle clamp is the same as that of the first toggle clamp.

As a preferred embodiment of the present utility model, the pressing block consists of a connecting portion and an abutting portion integrally formed with the connecting portion, and the angle between the abutting portion and the connecting portion is a right angle or an obtuse angle.

As a preferred embodiment of the present invention, the clamping block is fixedly connected to the second toggle clamp by bolts.

Compared with the prior art, the beneficial effects of the present invention are:

The circumferential fastening fixture described in the utility model cleverly applies a one-way bearing to the screw assembly of a circumferentially rotatable part, and realizes circumferential limitation of the part through the one-way bearing, so that the part can only rotate along the tightening direction or loosening direction of the screw, so that the part to be processed will not produce circumferential rotation during the screw tightening process, thereby improving the accuracy of the screw tightening operation and improving production efficiency; at the same time, the one-way rotation of the one-way bearing can be used to achieve the adjustment and alignment between the mounting hole and the screw hole of the part, which is convenient for pre-tightening of the screw. The utility model has a compact structure, is simple and practical, and is easy to operate. The one-way bearing of the clamping mechanism realizes circumferential limitation of the part and alignment of the screw hole, effectively preventing the part from rotating in the same direction during the screw tightening process, greatly improving the assembly or disassembly efficiency, and ensuring the quality of assembly or disassembly, which is conducive to the realization of precise screw assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the circumferential fastening fixture of the present invention;

FIG2 is a schematic structural diagram of the circumferential fastening clamp of the present invention equipped with a second toggle clamp;

FIG3 is a schematic diagram of the use of the circumferential fastening fixture of the present invention applied to a gas pressure reducing valve;

FIG4 is a partial cross-sectional view of the circumferential fastening fixture of the present invention applied to a gas pressure reducing valve;

Explanation of the accompanying drawings: 1. elbow clamp; 2. first elbow clamp; 21. hinged seat; 22. handle; 23. connecting rod; 24. movable rod; 3. clamping mechanism; 31. connecting block; 32. bearing seat; 33. one-way bearing; 34. mounting hole; 4. fixed seat; 5. support; 6. second elbow clamp; 7. clamping block; 8. support seat; 9. gas pressure reducing valve; 91. shell; 92. sealing ring; 93. mounting part.

DETAILED DESCRIPTION

The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

As shown in FIG1 , the circumferential fastening fixture provided by the utility model is applied to the screw-locking assembly process of parts that can rotate circumferentially relative to the product, such as the fastening of the sealing ring 92 of the gas pressure reducing valve 9, the fixing of some parts of the small audio system, and other assembly processes. The circumferential fastening fixture includes a toggle clamp 1, a first toggle clamp 2, and a clamping mechanism 3; wherein the toggle clamp 1 is used as a mounting plate for the first toggle clamp 2 and the clamping mechanism 3, the first toggle clamp 2 is used to drive the clamping mechanism 3 to fasten and limit the parts, and the clamping mechanism 3 is used to limit the circumferential rotation of the parts during the assembly process. Specifically, the toggle clamp 1 is provided with a fixing seat 4 for limiting the positions of the product with the parts to be assembled around, so that the product will not be relatively displaced during the assembly process. The structure of the fixing seat 4 of the utility model is not limited, as long as it can achieve the fixing of the product. In actual application, the specific structural setting of the fixing seat 4 varies according to the different structures of the products to be assembled. The first toggle clamp 2 is installed on the toggle clamp 1 through the support 5, and the first toggle clamp 2 is fixedly connected to the support 5 by bolts, and the support 5 and the first toggle clamp 2 are located on one side of the fixing seat 4. The clamping mechanism 3 is arranged on the first toggle clamp 2 and extends toward the fixing seat 4. Driven by the first toggle clamp 2, the clamping mechanism 3 can move back and forth above the fixing seat 4 and away from the fixing seat 4. The clamping mechanism 3 includes a connecting block 31, a bearing seat 32 and a one-way bearing 33. The bearing seat 32 is connected to the first toggle clamp 2 through the connecting block 31. The one-way bearing 33 is rotatably arranged in the bearing seat 32. The one-way bearing 33 is provided with a mounting hole 34 for accommodating a circumferentially rotatable part. The mounting hole 34 is adapted to the mounting portion 93 of the part provided with a screw hole. As can be seen from the above scheme, the utility model cleverly applies the one-way bearing 33 to the screw assembly of the circumferentially rotatable parts, and realizes the circumferential limitation of the parts through the unidirectional rotation of the one-way bearing 33, so that the parts can only rotate along the tightening direction or loosening direction of the screw. When the screw needs to be tightened clockwise, the one-way bearing 33 is limited to allow the parts to rotate only counterclockwise, and when the screw needs to be tightened counterclockwise, the one-way bearing 33 is limited to allow the parts to rotate only clockwise, ensuring that the parts to be processed will not produce circumferential rotation in the same direction as the screw rotation during the screw tightening process, thereby improving the accuracy of the screw tightening operation and improving the production efficiency; at the same time, the one-way bearing 33 can be used to realize the adjustment and alignment between the mounting hole 34 and the screw hole of the part, which is convenient for pre-tightening of the screw.

Furthermore, in order to make the one-way bearing 33 suitable for both screw-locking assembly and loosening and disassembly of parts, the connecting block 31 extends from the first elbow clamp 2 to the direction of the bearing seat 32, and the bearing seat 32 is rotatably connected to the connecting block 31, so that the bearing seat 32 can be flipped around the extension direction of the connecting block 31. When the screw needs to be tightened, the one-way bearing 33 in the bearing seat 32 can be rotated counterclockwise. When the screw needs to be loosened, the bearing seat 32 is flipped so that the one-way bearing 33 is rotated clockwise to achieve circumferential limitation of the part during the screw loosening process.

Specifically, the first elbow clamp 2 includes an articulated seat 21, a handle 22, a connecting rod 23 and a movable rod 24. The articulated seat 21 is mounted on the support 5 by bolts, and the movable rod 24 and the handle 22 are movably connected to the articulated seat 21 respectively, and the movable rod 24 and the handle 22 are movably connected by the connecting rod 23. Among them, the bearing seat 32 is arranged at the bottom of the movable rod 24 through the connecting block 31. By bending the handle 22, the clamping mechanism 3 can be brought close to the fixed seat 4 and pressed on the parts of the fixed seat 4 or away from the fixed seat 4. Preferably, as shown in Figure 2, the circumferential fastening clamp of the utility model also includes a second elbow clamp 6 and a pressing block 7 for fastening the product in the up and down directions, the second elbow clamp 6 is mounted on the elbow clamp plate 1 through the support seat 8, and the pressing block 7 is fixedly mounted on the second elbow clamp 6; the second elbow clamp 6 and the pressing block 7 are located on the other side of the fixed seat 4. Specifically, the structure of the second elbow clamp 6 is the same as that of the first elbow clamp 2. The clamping block 7 is composed of a connecting portion and an abutting portion integrally formed with the connecting portion, and the angle between the abutting portion and the connecting portion is a right angle or an obtuse angle; the clamping block 7 is fixedly connected to the second toggle clamp 6 by bolts. Driven by the second toggle clamp 6, the abutting portion of the clamping block 7 can tighten the product in the fixing seat 4 from top to bottom.

In order to further illustrate the structure of the utility model, the following is a detailed description of the use process of the utility model by taking the assembly of the sealing ring 92 of the gas pressure reducing valve 9 as an example. As shown in Figures 3 and 4, the gas pressure reducing valve 9 is installed and fixed in the fixing seat 4, and the abutting portion of the clamping block 7 is abutted against the housing 91 of the gas pressure reducing valve 9 under the drive of the second elbow clamp 6, so as to tighten and limit the gas pressure reducing valve 9 in the up and down directions, and ensure that the gas pressure reducing valve 9 will not move relative to each other during the screw assembly process to affect the assembly efficiency and effect. Under the action of external force, the first elbow clamp 2 drives the clamping mechanism 3 to press on the sealing ring 92 of the gas pressure reducing valve 9, and makes the mounting portion 93 with a screw hole protrude and extend into the mounting hole 34 of the one-way bearing 33, and the mounting hole 34 and the screw hole of the part are adjusted and aligned by rotating the one-way bearing 33 counterclockwise, and the screw is pre-screwed into the screw hole after complete alignment, and finally the screw is tightened with an electric screwdriver. During the screw tightening process, due to the limiting effect of the one-way bearing 33, the parts that can originally rotate circumferentially can only rotate counterclockwise but not clockwise, ensuring that the parts will not produce circumferential rotation in the same direction as the tightening direction during the screw tightening process, which greatly improves the assembly efficiency and ensures the assembly quality, and is conducive to the realization of precise screw assembly.

To sum up, the circumferential fastening clamp of the utility model has a compact structure, is simple and practical, and is easy to operate. The circumferential limitation of parts and the alignment of screw holes are achieved through the one-way bearing of the clamping mechanism, which effectively prevents the parts from rotating in the same direction during the screwing process. It greatly improves the assembly or disassembly efficiency and ensures the quality of assembly or disassembly, which is conducive to the realization of precise screw assembly.

The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims (8)

1. A circumferential fastening clamp, characterized in that: comprises an elbow splint, a first elbow splint and a clamping mechanism; the first elbow clamp is arranged on the elbow clamp plate through a support, and a fixed seat is arranged on the elbow clamp plate; the first elbow clamp is provided with the clamping mechanism, and the clamping mechanism is positioned above the fixing seat; the clamping mechanism comprises a connecting block, a bearing seat and a one-way bearing, wherein the bearing seat is connected with the first elbow clamp through the connecting block, the one-way bearing is rotatably arranged in the bearing seat, and a mounting hole is formed in the one-way bearing.

2. The circumferential fastening clamp according to claim 1, wherein: the connecting block extends from the first elbow clamp to the bearing seat; the bearing seat is rotatably connected with the connecting block, so that the bearing seat can overturn around the extending direction of the connecting block.

3. The circumferential fastening clamp according to claim 1, wherein: the first elbow clamp comprises a hinge seat, a handle, a connecting rod and a movable rod; the movable rod and the handle are respectively and movably connected to the hinge seat, and the movable rod and the handle are movably connected through a connecting rod.

4. A circumferential fastening clamp according to claim 3, wherein: the bearing seat is arranged at the bottom of the movable rod through the connecting block.

5. A circumferential fastening clamp according to claim 3, wherein: the elbow clamp is characterized by further comprising a second elbow clamp and a compression block, wherein the second elbow clamp is installed on the elbow clamp plate through a supporting seat, and the compression block is fixedly installed on the second elbow clamp.

6. The circumferential fastening clamp according to claim 5, wherein: the second toggle clamp has the same structure as the first toggle clamp.

7. The circumferential fastening clamp according to claim 5, wherein: the compressing block is composed of a connecting part and an abutting part integrally formed with the connecting part, and an included angle between the abutting part and the connecting part is a right angle or an obtuse angle.

8. The circumferential fastening clamp according to claim 5, wherein: the compaction block is fixedly connected with the second elbow clamp through a bolt.