Push rod assembly welding clamp

Abstract

The utility model discloses a push rod assembly welding clamp, which relates to the technical field of machining auxiliary tools, and comprises a clamp body, a positioning block and a locking fixing piece, a through hole is arranged in the clamp body along the axis direction, and one end of the clamp body is provided with the positioning block and the locking fixing piece along the radial direction. The positioning block and the locking fixing piece can both extend into the through hole, a welding hole is further formed in the side wall of the end, close to the positioning block and the locking fixing block, of the clamp body in the radial direction, and the welding hole communicates with the through hole. A first positioning groove and a second positioning groove are formed in the other end of the clamp body in the axial direction of the clamp body, and the depth of the first positioning groove is smaller than that of the second positioning groove. The push rod assembly needing to be welded is clamped and fixed to be welded, the welding accuracy of the push rod and the connector is guaranteed, the welding quality is improved, and therefore the finished product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing auxiliary tooling, and more specifically, to a push rod assembly welding fixture. Background Art

[0002] The push rod assembly is one of the important accessories of medical surgical instruments. Figure 1 As shown, the structure of the push rod assembly includes a push rod and a joint, wherein the push rod and the joint are both single pieces, and the two need to be assembled by welding to form a finished product.

[0003] During the production and processing of the push rod assembly, various factors may cause the push rod assembly welding position and size deviations. The position and size deviations of the push rod assembly will further affect the assembly and use of the whole machine. Therefore, how to ensure the accuracy of the push rod and the joint welding is a problem that needs to be solved at present. Utility Model Content

[0004] In view of this problem in practical application, the utility model aims to provide a push rod assembly welding fixture, and the specific scheme is as follows:

[0005] A push rod assembly welding fixture, comprising a fixture body, a positioning block and a locking fixture, wherein a through hole is opened inside the fixture body along its axial direction, the positioning block and the locking fixture are installed along the radial direction of one end of the fixture body, and the positioning block and the locking fixture can both extend into the through hole, and a welding hole is further opened along the radial direction on the side wall of one end of the fixture body close to the positioning block and the locking fixture, and the welding hole is connected with the through hole;

[0006] The other end of the clamp body is provided with a first positioning groove and a second positioning groove along its axial direction, and the groove depth of the first positioning groove is smaller than the groove depth of the second positioning groove.

[0007] Furthermore, a positioning hole is provided on a side wall of the clamp body near one end thereof along its radial direction, and the positioning hole is communicated with the through hole; the positioning hole is used in conjunction with the positioning block.

[0008] Furthermore, two positioning holes are provided along the radial direction of the clamp body, and the two positioning holes are evenly arranged along the circumference of the clamp body.

[0009] Furthermore, a locking and fixing hole is provided in a radial direction on a side wall of the clamp body close to one end portion, and the locking and fixing hole is communicated with the through hole; the locking and fixing hole is used in conjunction with the locking and fixing piece.

[0010] Furthermore, two locking and fixing holes are provided along the radial direction of the clamp body, and the two locking and fixing holes are evenly arranged along the circumference of the clamp body.

[0011] Furthermore, the welding hole is located between the positioning hole and the locking and fixing hole;

[0012] There are four welding holes, and the four welding holes are evenly arranged along the circumference of the clamp body.

[0013] Furthermore, the inner diameter of the through hole matches the outer diameter of the push rod assembly.

[0014] Furthermore, the difference between the groove depths of the first positioning groove and the second positioning groove is not less than the length of the upper joint of the push rod assembly.

[0015] Furthermore, two of the first positioning grooves and two of the second positioning grooves are provided respectively, and the first positioning grooves and the second positioning grooves are evenly arranged along the circumference of the clamp body and are arranged at intervals.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] The utility model provides a push rod assembly welding fixture, which can clamp and fix the push rod assembly to be welded for welding, thereby solving the problem of insufficient accuracy in existing welding, helping to improve welding quality, and thus improving the quality of finished products. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the state of the first stage of welding in the utility model;

[0020] Figure 3 It is a schematic diagram of the state of the second stage of welding in the utility model.

[0021] Reference numerals: 1, fixture body; 2, positioning block; 3, locking fixture; 4, through hole; 5, welding hole; 6, first positioning groove; 7, second positioning groove; 8, positioning hole; 9, locking fixture hole;

[0022] 100, push rod; 101, protrusion; 102, inner hole; 200, joint; 201, connecting block; 202, notch. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] like Figure 1As shown, the push rod assembly includes a push rod 100 and a joint 200, wherein two protrusions 101 are provided on the side wall near the end of one end of the push rod 100, an inner hole 102 is opened inside the push rod 100 along its axial direction, one end of the joint 200 has a connecting block 201 matching the inner hole 102, and the other end of the joint 200 has a notch 202.

[0025] During the processing, the push rod 100 and the joint 200 on the push rod assembly need to be welded together to obtain the finished product. Specifically, the connecting block 201 on the joint 200 extends into the inner hole 102. At this time, the end of the joint 200 contacts the end of the push rod 100, and the contacting ends of the two are welded together.

[0026] The push rod assembly welding fixture provided in this embodiment is used to fix the push rod 100 and the joint 200 during the welding process.

[0027] Likewise Figure 1 As shown, a push rod assembly welding fixture includes a fixture body 1, a positioning block 2 and a locking fixture 3. The positioning block 2 and the locking fixture 3 are both installed on the fixture body 1 and cooperate with the fixture body 1 to complete the clamping and fixing of the push rod assembly.

[0028] The clamp body 1 is a columnar body, preferably a cylindrical body, and can be made of alloy materials such as stainless steel. A through hole 4 is provided inside the clamp body 1 along its axial direction, and the shape of the through hole 4 is adapted to the shape of the push rod assembly; the cross section of the through hole 4 is adapted to the cross section of the push rod assembly and is set to be circular. And preferably, the through hole 4 is located at the center of the clamp body 1.

[0029] A positioning block 2 and a locking fixture 3 are radially installed at one end of the clamp body 1, and both the positioning block 2 and the locking fixture 3 can extend into the through hole 4. The positioning block 2 is used to fix the joint 200 of the product so that it does not rotate, and the locking fixture 3 is used to lock and fix the push rod 100.

[0030] Specifically, a positioning hole 8 is provided along the radial direction of the side wall of the clamp body 1 near one end thereof, and the positioning hole 8 is connected to the through hole 4; the positioning hole 8 is used in conjunction with the positioning block 2, and when in use, the positioning block 2 extends into the positioning hole 8 for positioning. In addition, two positioning holes 8 are provided along the radial direction of the clamp body 1, and the two positioning holes 8 are evenly arranged along the circumference of the clamp body 1, that is, the two positioning holes 8 are located on the same diameter line of the cross section of the clamp body 1. Preferably, the positioning hole 8 is a hole-shaped structure with a rectangular cross section, and the positioning block 2 is a rectangular block.

[0031] A locking and fixing hole 9 is provided along the radial direction of the side wall of the clamp body 1 near one end, and the locking and fixing hole 9 is connected with the through hole 4; the locking and fixing hole 9 is used in conjunction with the locking and fixing member 3, preferably, the locking and fixing hole 9 is a threaded through hole 4, and the locking and fixing member 3 is a screw, and the screw model is an M3 fixing screw, and when in use, the screw is screwed into the threaded through hole 4 to fix the push rod 100. In addition, there are two locking and fixing holes 9 provided along the radial direction of the clamp body 1, and the two locking and fixing holes 9 are evenly arranged along the circumference of the clamp body 1, that is, the two locking and fixing holes 9 are located on the same diameter line of the cross section of the clamp body 1.

[0032] In addition, it should be noted that the positioning holes 8 and the locking and fixing holes 9 may also be arranged in other numbers and in other directions, and the present embodiment is only a preferred implementation manner thereof.

[0033] A welding hole 5 is also provided along the radial direction of the side wall of the clamp body 1 near the positioning block 2 and the locking fixture 3. The welding hole 5 is connected to the through hole 4. In addition, four welding holes 5 are provided and are evenly arranged along the circumference of the clamp body 1, that is, the four welding holes 5 are located in a cross-shaped distribution on the cross section of the clamp body 1. The welding machine can perform spot welding on the connection between the push rod 100 and the joint 200 through the welding holes 5.

[0034] In addition, the welding hole 5 is located between the positioning hole 8 and the locking and fixing hole 9, so that the welding hole 5 is exactly located at the connection between the push rod 100 and the joint 200, while ensuring that the positioning block 2 and the locking and fixing member 3 respectively position and fix the joint 200 and the push rod 100.

[0035] The other end of the clamp body 1 is provided with a first positioning groove 6 and a second positioning groove 7 along its axial direction, and two first positioning grooves 6 and two second positioning grooves 7 are provided respectively. The first positioning grooves 6 and the second positioning grooves 7 are evenly arranged along the circumference of the clamp body 1 and are arranged at intervals, that is, on the cross section of the clamp body 1, the two first positioning grooves 6 are located on the same diameter line, the two second positioning grooves 7 are located on the same diameter line, and the angle between each two adjacent first positioning grooves 6 and the second positioning grooves 7 is not greater than 90°. Preferably, the angle between each two adjacent first positioning grooves 6 and the second positioning grooves 7 is 90°.

[0036] The first positioning groove 6 and the second positioning groove 7 are used to match the two protrusions 101 on the side wall of the end of the push rod 100. The push rod 100 extends into the through hole 4, and the two protrusions 101 on the push rod 100 are pushed into the two first positioning grooves 6 to achieve spot welding. Thereafter, the push rod 100 is rotated and the two protrusions 101 thereon are pushed into the two second positioning grooves 7. The connection between the joint 200 and the push rod 100 extends out of the fixture body 1 to achieve continuous welding.

[0037] In addition, the groove depth of the first positioning groove 6 is less than the groove depth of the second positioning groove 7. Moreover, the difference between the groove depths of the first positioning groove 6 and the second positioning groove 7 is not less than the length of the joint 200 on the push rod assembly. Preferably, the difference between the groove depths of the first positioning groove 6 and the second positioning groove 7 is slightly greater than the length of the joint 200. In this way, when the push rod 100 is switched from being positioned by the first positioning groove 6 to being positioned by the second positioning groove 7, the connection between the push rod 100 and the joint 200 can be completely extended out of the fixture body 1 to ensure continuous welding.

[0038] The specific implementation principle of the utility model is:

[0039] Welding consists of two stages: The first stage of welding is as follows: Figure 2 As shown, first push the connecting block 201 of the joint 200 into the inner hole 102 of the push rod 100, so that the push rod 100 is connected to the joint 200, and push the connected push rod 100 and the joint 200 into the through hole 4 of the clamp body 1 from the end provided with the first positioning groove 6 and the second positioning groove 7, until the protrusion 101 on the side wall of the push rod 100 is pushed into the first positioning groove 6 of the clamp until it cannot be pushed further, at this time, the notch 202 of the joint 200 just corresponds to the positioning hole 8, push the positioning block 2 into the positioning hole 8 and reach the notch 202 to position the joint 200, then screw the locking fixture 3 into the locking fixing hole 9 to fix the push rod 100, at this time, the connection between the push rod 100 and the joint 200 just corresponds to the welding hole 5, then use a welding machine to make welding points on the four welding holes 5 to fix the push rod 100 and the joint 200, and the first stage of spot welding can be completed;

[0040] The second stage of welding is as follows: Figure 3 As shown, after completing the first stage of welding, take out the positioning block 2, loosen the locking fixture 3, and then rotate the push rod assembly after spot welding by 90° and push it into the second positioning groove 7 until it can no longer be pushed further. At this time, the welding fixture will be exposed at the spot welding point between the push rod 100 and the joint 200 on the push rod assembly, and then the product will be welded firmly through continuous welding of the laser welding machine to complete the welding of the push rod assembly.

[0041] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A push rod assembly welding fixture, characterized in that: The clamp body comprises a clamp body, a positioning block and a locking fixture, wherein a through hole is opened inside the clamp body along its axial direction, the positioning block and the locking fixture are installed along the radial direction at one end of the clamp body, and both the positioning block and the locking fixture can extend into the through hole, and a welding hole is also opened along the radial direction on the side wall of one end of the clamp body close to the positioning block and the locking fixture, and the welding hole is connected with the through hole; The other end of the clamp body is provided with a first positioning groove and a second positioning groove along its axial direction, and the groove depth of the first positioning groove is smaller than the groove depth of the second positioning groove.

2. The push rod assembly welding fixture according to claim 1, characterized in that: A positioning hole is provided on the side wall of the clamp body near one end thereof along its radial direction, and the positioning hole is communicated with the through hole; the positioning hole is used in conjunction with the positioning block.

3. The push rod assembly welding fixture according to claim 2, characterized in that: Two positioning holes are provided along the radial direction of the clamp body, and the two positioning holes are evenly arranged along the circumference of the clamp body.

4. The push rod assembly welding fixture according to claim 2, characterized in that: A locking and fixing hole is provided on the side wall of the clamp body near one end portion along its radial direction, and the locking and fixing hole is communicated with the through hole; the locking and fixing hole is used in conjunction with the locking and fixing piece.

5. The push rod assembly welding fixture according to claim 4, characterized in that: Two locking and fixing holes are provided along the radial direction of the clamp body, and the two locking and fixing holes are evenly arranged along the circumference of the clamp body.

6. The push rod assembly welding fixture according to claim 5, characterized in that: The welding hole is located between the positioning hole and the locking and fixing hole; There are four welding holes, and the four welding holes are evenly arranged along the circumference of the clamp body.

7. The push rod assembly welding fixture according to claim 1, characterized in that: The inner diameter of the through hole matches the outer diameter of the push rod assembly.

8. The push rod assembly welding fixture according to claim 1, characterized in that: The difference between the groove depths of the first positioning groove and the second positioning groove is not less than the length of the upper joint of the push rod assembly.

9. The push rod assembly welding fixture according to claim 1, characterized in that: There are two first positioning grooves and two second positioning grooves respectively, and the first positioning grooves and the second positioning grooves are evenly arranged along the circumference of the clamp body and are arranged at intervals.

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