Welding device for pressure gauge movement and bourdon tube

Abstract

A welding device for a pressure gauge movement and a spring tube comprises a conveying belt, a positioning seat is mounted on the conveying belt, a shifting rod is mounted on the left portion of the positioning seat, the lower end of the shifting rod is hinged to the positioning seat, an elastic limiting mechanism is mounted on the left of the shifting rod, the shifting rod is clamped and limited through the elastic limiting mechanism, and an elastic jacking mechanism is further mounted on the left of the shifting rod. A rear stamping die is installed on the rear side of the conveying belt, a movable frame is installed on the side wall, facing the conveying belt, of the rear stamping die, and a welding mechanism is installed on the movable frame. After the pressure gauge is placed on the positioning seat, the connecting block on the movement is shifted by the shifting rod to be in contact with the left end of the bourdon tube, the connecting block is moved to the position below the welding mechanism through the transmission belt, and welding of the connecting block and the bourdon tube is completed through the welding mechanism. According to the device, manual operation is replaced by a mechanical structure, the welding process of the machine core and the bourdon tube is automatically completed, labor force is liberated, and the production efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to a welding device for a pressure gauge movement and a bourdon tube. Background Art

[0002] A pressure gauge shows pressure by the elastic deformation of a sensitive element, i.e., a bourdon tube, inside the gauge, and then the conversion mechanism inside the movement of the gauge conducts the pressure deformation to the pointer, causing the pointer to rotate. One end of the closed bourdon tube is connected to the movement, and the open end is connected to the vent hole inside the joint. Gas enters through the joint, causing elastic deformation. The welding process between the bourdon tube and the movement is generally completed by manually holding the pressure gauge and manually adjusting the welding point, which has low efficiency and potential safety hazards. Content of the Utility Model

[0003] In view of the deficiencies in the above problems, the utility model provides a welding device for a pressure gauge movement and a bourdon tube.

[0004] To achieve the above object, the utility model provides a welding device for a pressure gauge movement and a bourdon tube, which includes a conveyor belt. A positioning seat is installed on the conveyor belt. A positioning groove is machined at the center of the top of the positioning seat. A feeding rod is installed on the left part of the positioning seat. The lower end of the feeding rod is hinged to the positioning seat. An elastic limiting mechanism is installed to the left of the feeding rod. The feeding rod is clamped and limited by the elastic limiting mechanism. An elastic pressing mechanism is also installed to the left of the feeding rod. The feeding rod is reset by the elastic pressing mechanism to press the movement of the pressure gauge towards the bourdon tube. A rear punching die is installed behind the conveyor belt. A movable frame is installed on the side wall of the rear punching die facing the conveyor belt. A welding mechanism is installed on the movable frame.

[0005] As a further improvement of the utility model, the elastic limiting mechanism includes a limiting block. The limiting block is fixedly connected to the positioning seat. A rotating shaft is installed in the clearance in the middle of the limiting block. A clamping block is installed on the rotating shaft. A torsion spring is also installed on the rotating shaft.

[0006] As a further improvement of the utility model, the upper end of the feeding rod is an arc end, and the arc end is matched and clamped with the clamping block.

[0007] As a further improvement of the utility model, the elastic pressing mechanism includes a fixed block. A bushing is installed on the left side of the fixed block. A push rod is installed inside the bushing. A compression spring is installed in the inner hole at the lower part of the push rod. A guiding block is installed at the upper part of the push rod. A guiding groove is machined in the middle of the feeding rod. The lower part of the guiding block is slidably connected with the guiding groove.

[0008] As a further improvement of the utility model, the movable frame can move up and down along the rear punching die.

[0009] As a further improvement of the present utility model, the welding mechanism includes a welding torch and a solder feeding tube.

[0010] The beneficial effects of the present utility model are as follows:

[0011] The device replaces manual operation through a mechanical structure, realizes the self-positioning of the connecting block and the spring tube on the movement core, and automatically completes the welding process of the movement core and the spring tube, liberating the labor force and effectively improving the production efficiency. Description of the Drawings

[0012] Figure 1 It is a top view of a welding device for a pressure gauge movement core and a spring tube of the present utility model;

[0013] Figure 2 is Figure 1 an enlarged view of part A in

[0014] Figure 3 It is a side view of a welding device for a pressure gauge movement core and a spring tube of the present utility model;

[0015] Figure 4 is a structural schematic diagram of the elastic limit mechanism of part 5;

[0016] Figure 5 is a schematic diagram of the overall structure after the welding of the pressure gauge 5 is completed.

[0017] In the figure: 1, conveyor belt; 2, positioning seat; 21, positioning groove; 3, material pushing rod; 31, guiding groove; 32, arc end; 4, elastic pressing mechanism; 41, fixed block; 42, bushing; 43, compression spring; 44, ejector rod; 441, inner hole; 45, guiding block; 5, elastic limit mechanism; 51, snap block; 52, rotating shaft; 53, torsion spring; 54, limit block; 6, rear punching die; 7, movable frame; 8, welding mechanism; 81, welding torch; 82, solder feeding tube; 9, pressure gauge; 91, movement core; 92, joint; 93, spring tube; 94, transmission part; 95, connecting rod; 96, connecting block. Detailed Implementation Modes

[0018] As Figure 1 shown, a welding device for a pressure gauge movement core and a spring tube according to the present utility model includes a conveyor belt 1, a positioning seat 2 is installed on the conveyor belt 1, a positioning groove 21 is machined at the center of the top of the positioning seat 2, a material pushing rod 3 is installed on the left part of the positioning seat 2, the lower end of the material pushing rod 3 is hinged to the positioning seat 2, and an elastic limit mechanism 5 is installed on the left side of the material pushing rod 3 (see Figure 4) The material pushing rod 3 is clamped and limited by an elastic limiting mechanism 5. The elastic limiting mechanism 5 includes a limiting block 54 which is fixedly connected to the positioning seat 2. A rotating shaft 52 is installed in the clearance in the middle of the limiting block 54. A clamping block 51 is installed on the rotating shaft 52. The upper end of the material pushing rod 3 is an arc end 32 which is matched and clamped with the clamping block 51. A torsion spring 53 is also installed on the rotating shaft 52. An elastic pressing mechanism 4 is also installed on the left side of the material pushing rod 3 (see Figure 2 ). The material pushing rod 3 is reset by the elastic pressing mechanism 4 to press the movement 91 of the pressure gauge 9 towards the spring tube 93. The elastic pressing mechanism 4 includes a fixed block 41. A bushing 42 is installed on the left side of the fixed block 41. A ejector rod 44 is installed in the bushing 42. A compression spring 43 is installed in the inner hole 441 at the lower part of the ejector rod 44. A guide block 45 is installed at the upper part of the ejector rod 44. A guide groove 31 is machined in the middle of the material pushing rod 3. The lower part of the guide block 45 is slidably connected with the guide groove 31. A rear punching die 6 is installed at the rear side of the conveyor belt 1. A movable frame 7 is installed on the side wall of the rear punching die 6 facing the conveyor belt 1. The movable frame 7 can move up and down along the rear punching die 6. A welding mechanism 8 is installed on the movable frame 7. The welding mechanism 8 includes a welding torch 81 and a solder feeding tube 82.

[0019] This device replaces manual operation by means of a mechanical structure, realizes the self-positioning of the connecting block on the movement and the spring tube, and automatically completes the welding process of the movement and the spring tube, liberating the labor force and effectively improving the production efficiency.

[0020] During specific use, for the convenience of understanding the present utility model, it is described in conjunction with the accompanying drawings;

[0021] As Figure 5 shown, the pressure gauge 9 includes a movement 91. A joint 92 is installed at the lower part of the movement 91. One end of the spring tube 93 is fixedly connected to the left side of the joint 92. A transmission member 94 is rotatably installed at the left part of the movement 91. One end of a connecting rod 95 is hinged to the left end of the transmission member 94. The other end of the connecting rod 95 is hinged to a connecting block 96. And the end of the connecting block 96 far from the connecting rod 95 is welded and fixed to the spring tube 93. This device is mainly used for the welding process of the connecting block 96 and the spring tube 93. Before welding, other components have been installed.

[0022] Before working, the material pushing rod on the positioning seat is clamped with the clamping block of the elastic limiting mechanism, and the compression spring in the elastic pressing mechanism is elastically compressed accordingly;

[0023] During operation, place the pressure gauge in the positioning groove of the positioning seat. The pressure gauge partially extends into the positioning groove. Move the buckle block to disconnect its connection with the arc end of the material pushing rod. Under the elastic restoring force of the compression spring, the ejector rod in the elastic pressing mechanism pushes the material pushing rod to rotate rightward along the hinge point at the lower end. The guide block moves correspondingly in the guide groove in the middle of the material pushing rod. The side of the material pushing rod facing the pressure gauge first contacts the connecting block and pushes the connecting block to rotate along its hinge part with the connecting rod until the connecting rod contacts the material pushing rod. Then the connecting rod also rotates along the hinge part at the lower part with the transmission part. When the end of the connecting block contacts the bourdon tube, the positioning is completed. After the positioning is completed, the positioning seat is driven by the conveyor belt to move under the welding mechanism. The contact point between the connecting block and the bourdon tube corresponds to the welding mechanism to limit the positioning seat. The rear punch moves towards the conveyor belt side, and at the same time, the movable frame moves downward. The solder feeding tube cooperates with the welding torch to complete the welding of the connecting block and the bourdon tube. After the welding is completed, the rear punch returns to its original position, the positioning seat moves rightward, the material pushing rod is pushed leftward, and the material pushing rod rotates leftward accordingly. The arc end at the upper part of the material pushing rod and the buckle block form a clamping connection under the elastic force of the torsion spring, so that the material pushing rod disengages from the contact with the pressure gauge, and then the pressure gauge can be taken out.

[0024] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A welding device for a pressure gauge movement and a bourdon tube, characterized in that: It includes a conveyor belt (1), on which a positioning seat (2) is installed. A positioning groove (21) is machined at the center of the top of the positioning seat (2). A material pushing rod (3) is installed at the left part of the positioning seat (2). The lower end of the material pushing rod (3) is hinged to the positioning seat (2). An elastic limiting mechanism (5) is installed to the left of the material pushing rod (3). The material pushing rod (3) is clamped and limited by the elastic limiting mechanism (5). An elastic pressing mechanism (4) is also installed to the left of the material pushing rod (3). The material pushing rod (3) is reset by the elastic pressing mechanism (4) to press the movement (91) of the pressure gauge (9) towards the bourdon tube (93). A rear punching die (6) is installed at the rear side of the conveyor belt (1). A movable frame (7) is installed on the side wall of the rear punching die (6) facing the conveyor belt (1). A welding mechanism (8) is installed on the movable frame (7).

2. The welding device for a pressure gauge movement and a bourdon tube according to claim 1, characterized in that: The elastic limiting mechanism (5) includes a limiting block (54) which is fixedly connected to the positioning seat (2). A rotating shaft (52) is installed at the clearance in the middle of the limiting block (54). A clamping block (51) is installed on the rotating shaft (52). A torsion spring (53) is also installed on the rotating shaft (52).

3. The welding device for a pressure gauge movement and a bourdon tube according to claim 2, characterized in that: The upper end of the material pushing rod (3) is an arc end (32), and the arc end (32) is matched and clamped with the clamping block (51).

4. A welding device for a pressure gauge movement and a bourdon tube according to claim 1, characterized in that: The elastic pressing mechanism (4) includes a fixed block (41). A bushing (42) is installed on the left side of the fixed block (41). A ejector rod (44) is installed in the bushing (42). A compression spring (43) is installed in the inner hole (441) at the lower part of the ejector rod (44). A guide block (45) is installed at the upper part of the ejector rod (44). A guide groove (31) is machined in the middle of the material pushing rod (3). The lower part of the guide block (45) is slidably connected with the guide groove (31).

5. A welding device for a pressure gauge movement and a bourdon tube according to claim 1, characterized in that: The movable frame (7) can move up and down along the rear punching die (6).

6. The welding device for a pressure gauge movement and a bourdon tube according to claim 1, characterized in that: The welding mechanism (8) includes a welding torch (81) and a solder feeding tube (82).

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