An automatic welding device for pressure gauge joint and spring tube

Abstract

An automatic welding device for pressure gauge joint and spring tube includes a positioning shaft installed in the middle of a workbench, a conveying turntable sleeved on the positioning shaft, positioning mechanisms evenly installed near the circumference of the conveying turntable, a fixed disc installed on the upper part of the positioning shaft, a gas guide mechanism installed on the fixed disc, the gas guide mechanism connected with the guide holes on the positioning mechanisms through gas guide pipes, a welding mechanism installed on the left side of the conveying turntable, and a solder supply mechanism installed below the welding mechanism. The joint and the spring tube are placed on the positioning seat, the spring tube is positioned by the elastic limiting mechanism and the limiting block, then the welding is completed by the welding mechanism, and the waste produced in the welding process is removed by the discharging mechanism. The gas guide mechanism ensures that the waste produced in the welding process does not block the inner cavity of the joint and the spring tube. The device replaces manual operation with mechanization mode, automatically completes the welding process of the joint and the spring tube, and realizes automatic discharging, liberates labor, improves production efficiency, and solves the safety hidden trouble.

Description

Technical Field

[0001] This utility model relates to an automatic welding device for pressure gauge connectors and Bourdon tubes. Background Technology

[0002] A pressure gauge displays pressure by transmitting pressure through the elastic deformation of its internal sensitive element (Bourdon tube, diaphragm, Bourdon tube, etc.) to a pointer via a mechanism within the gauge's internal movement. The closed end of the Bourdon tube connects to the movement, while the open end connects to a vent in a connector. Air intake through the connector induces elastic deformation. The connector and Bourdon tube are typically connected by welding. Due to the irregular shapes of both the connector and the Bourdon tube, positioning is difficult, usually requiring manual positioning and individual welding. Manual welding is inefficient and poses safety hazards in practice. Utility Model Content

[0003] To address the shortcomings mentioned above, this utility model provides an automatic welding device for pressure gauge connectors and Bourdon tubes.

[0004] To achieve the above objectives, this utility model provides an automatic welding device for pressure gauge connectors and Bourdon tubes, including a positioning shaft, which is installed in the middle of the worktable;

[0005] A conveying turntable, which is mounted on the positioning shaft, and positioning mechanisms are evenly installed near the circumference of the conveying turntable;

[0006] The positioning mechanism includes a positioning seat, the upper part of which is machined to form a stepped surface, an elastic limiting mechanism is installed on the stepped surface, a positioning groove is machined in the middle of the positioning seat, and a guide hole is machined on the inner sidewall of the positioning groove to penetrate the positioning seat;

[0007] A fixed plate is mounted on the upper part of the positioning shaft, and an air guiding mechanism is installed on the fixed plate. The air guiding mechanism is connected to the guide hole through an air guiding pipe.

[0008] A welding mechanism is installed to the left of the conveyor turntable, and a solder feeding mechanism is installed below the welding mechanism.

[0009] As a further improvement of this utility model, a gear set is installed below the conveying turntable. The gear set includes a bevel gear fixedly connected to the conveying turntable and a bevel gear I meshing with the bevel gear. A motor is installed on the left side of the worktable. The motor drives the gear set to rotate through a grooved wheel mechanism. The grooved wheel mechanism includes a drive dial and a grooved wheel. The drive dial is coaxially connected to the motor, and the grooved wheel is coaxially connected to the bevel gear I.

[0010] As a further improvement of this utility model, the elastic limiting mechanism includes a bushing, which is bolted to the side wall of the stepped surface. A pressure rod is installed inside the bushing. The pressure rod is T-shaped, and a tension spring is installed between the head of the pressure rod and the bushing. The radial cross-section of the pressure rod is square.

[0011] As a further improvement of this utility model, a limiting block is installed at the lower part of the positioning seat, and the upper left part of the limiting block is machined to form an inclined surface.

[0012] As a further improvement of this utility model, the air guiding mechanism includes an air generator installed on the fixed plate, an air distributor installed above the air generator, the air distributor including an air distribution chamber and a steering wheel, the air distribution chamber being connected to the air generator through an air inlet pipe, the steering wheel being connected to one end of the air guiding pipe, the other end of the air guiding pipe extending into the guide hole, and a crossbar being provided on the side wall of the steering wheel, the crossbar being fixedly connected to the conveying turntable through a vertical bar.

[0013] As a further improvement of this utility model, the welding mechanism includes a left punch, a movable frame is installed on the upper right side of the left punch, a welding gun is installed on the movable frame, and a coolant pipe is installed on the lower right side of the left punch.

[0014] As a further improvement of this utility model, the movable frame can move up and down along the left punch, and the welding torch can move left and right along the movable frame.

[0015] As a further improvement of this utility model, the solder feeding mechanism includes a cylinder, a push block is installed on the top of the lever of the cylinder, and solder is fixed on the push block.

[0016] As a further improvement of this utility model, a discharge mechanism is installed on the right side of the conveyor turntable. The discharge mechanism includes a right punch, a push rod is horizontally installed on the upper left side of the right punch, the left end of the push rod is machined to form a slope I, and a discharge robot is installed on the lower left side of the right punch. The discharge robot is provided with a clamping part.

[0017] As a further improvement of this utility model, a discharge track is installed below the discharge robot, and the discharge track is inclined to the lower right.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. The device is equipped with a rotatable conveyor turntable and a stationary fixed plate. Positioning mechanisms are evenly installed on the conveyor turntable to position the joints and spring tubes. An air guiding mechanism is installed on the fixed plate. The air guiding mechanism is connected to the positioning mechanism through an air guiding pipe and extends into the guide hole of the positioning mechanism. After the joints and spring tubes are positioned, the air guiding pipe is connected to the vent hole of the joints. During welding, air is continuously introduced into the joints to ensure that the waste generated during the welding process will not block the vent hole of the joints and the inner cavity of the spring tube.

[0020] 2. The positioning mechanism is equipped with an elastic limiting mechanism to work with the limiting block to position the spring tube. Correspondingly, the discharge mechanism is equipped with a top rod to lift the pressure rod in the elastic limiting mechanism so as to smoothly remove the welded joint and spring tube. The welding mechanism is equipped with a coolant pipe to spray coolant after welding to achieve rapid cooling. The overall structure is simple and easy to operate.

[0021] 3. This device replaces manual operation with mechanization, automatically completing the welding process of joints and spring tubes and achieving automatic material discharge, thus freeing up labor, improving production efficiency, and solving safety hazards. Attached Figure Description

[0022] Figure 1 This is a front view of an automatic welding device for a pressure gauge connector and a Bourdon tube according to the present invention.

[0023] Figure 2 This is a top view of an automatic welding device for a pressure gauge connector and a Bourdon tube according to the present invention.

[0024] Figure 3 This is the front view of the positioning mechanism of component 9;

[0025] Figure 4 Side view of the positioning mechanism of component 9;

[0026] Figure 5 This is a schematic diagram of the structure of the spring tube 16;

[0027] Figure 6 This is a schematic diagram of the structure of connector 17.

[0028] In the diagram: 1. Worktable; 2. Positioning shaft; 3. Surface bearing; 4. Gear set; 41. Bevel gear; 42. Bevel gear I; 5. Conveyor turntable; 6. Geneva wheel mechanism; 61. Drive dial; 62. Geneva wheel; 7. Motor; 8. Solder feeding mechanism; 81. Cylinder; 82. Push block; 83. Solder; 9. Positioning mechanism; 91. Positioning seat; 911. Stepped surface; 912. Positioning groove; 92. Elastic limit mechanism; 921. Pressure rod; 922. Bushing; 923. Tension spring; 93. Limiting block; 931. Inclined surface; 913. Guide hole; 10. Welding mechanism; 101. Left punch die; 102. Movable frame; 103. Welding torch; 104. Coolant pipe; 11. Vertical rod; 12. Air guiding mechanism; 121. Air generator; 122. Air distributor; 1221. Air distribution chamber; 1222. Turning part; 1223. Horizontal rod; 123. Air inlet pipe; 124. Air guide pipe; 13. Fixed plate; 14. Discharge mechanism; 141. Right punch; 142. Push rod; 1421. Inclined surface I; 143. Discharge robot; 144. Clamping part; 15. Discharge track; 16. Bourdon tube; 161. Open end; 17. Connector; 171. Groove; 172. Vent hole. Detailed Implementation

[0029] like Figure 1 As shown, the automatic welding device for pressure gauge connector and Bourdon tube of this utility model includes a positioning shaft 2, which is installed in the middle of the workbench 1.

[0030] Conveying turntable 5 is mounted on positioning shaft 2, and positioning mechanisms 9 are evenly installed near the circumference of the conveying turntable 5 (see...). Figure 2 A gear set 4 is installed below the conveyor turntable 5. The gear set 4 includes a bevel gear 41 fixedly connected to the conveyor turntable 5 and a bevel gear I 42 meshing with the bevel gear 41. A motor 7 is installed on the left side of the worktable 1. The motor 7 drives the gear set 4 to rotate through the Geneva mechanism 6. The Geneva mechanism 6 includes a drive dial 61 and a Geneva wheel 62. The drive dial 61 is coaxially connected to the motor 7, and the Geneva wheel 62 is coaxially connected to the bevel gear I 42.

[0031] The positioning mechanism 9 includes a positioning seat 91. A stepped surface 911 is machined on the upper part of the positioning seat 91. An elastic limiting mechanism 92 is installed on the stepped surface 911. The elastic limiting mechanism 92 includes a bushing 922, which is bolted to the side wall of the stepped surface 911. A pressure rod 921 is installed inside the bushing 922. The pressure rod 921 is T-shaped. A tension spring 923 is installed between the head of the pressure rod 921 and the bushing 922. The radial cross-section of the rod portion of the pressure rod 921 is square. A positioning groove 912 is machined in the middle of the positioning seat 91. A guide hole 913 is machined on the inner side wall of the positioning groove 912, penetrating the positioning seat 91. A limiting block 93 is installed at the lower part of the positioning seat 91. An inclined surface 931 is machined on the upper left of the limiting block 93 (see...). Figure 3 , Figure 4 );

[0032] A fixed plate 13 is mounted on the upper part of the positioning shaft 2. An air guiding mechanism 12 is mounted on the fixed plate 13. The air guiding mechanism 12 is connected to the guide hole 913 through an air guiding pipe 124. The air guiding mechanism 12 includes an air generator 121 mounted on the fixed plate 13. An air distributor 122 is mounted above the air generator 121. The air distributor 122 includes an air distribution chamber 1221 and a steering wheel 1222. The air distribution chamber 1221 is connected to the air generator 121 through an air inlet pipe 123. One end of the steering wheel 1222 is connected to the air guiding pipe 124. The other end of the air guiding pipe 124 extends into the guide hole 913. A crossbar 1223 is also provided on the side wall of the steering wheel 1222. The crossbar 1223 is fixedly connected to the conveying turntable 5 through a vertical bar 11.

[0033] Welding mechanism 10 is installed to the left of conveyor turntable 5. Welding mechanism 10 includes left punch 101. Movable frame 102 is installed on the upper right side of left punch 101. Welding gun 103 is installed on movable frame 102. Movable frame 102 can move up and down along left punch 101. Welding gun 103 can move left and right along movable frame 102. Coolant pipe 104 is installed on the lower right side of left punch 101. Solder feeding mechanism 8 is installed below welding mechanism 10. Solder feeding mechanism 8 includes cylinder 81. Push block 82 is installed on the top of lever of cylinder 81. Solder 83 is fixed on push block 82.

[0034] A discharge mechanism 14 is installed on the right side of the conveyor turntable 5. The discharge mechanism 14 includes a right punch 141. A push rod 142 is horizontally installed on the upper left side of the right punch 141. The left end of the push rod 142 is machined to form a slope I 1421. A discharge robot 143 is installed on the lower left side of the right punch 141. The discharge robot 143 is provided with a clamping part 144. A discharge track 15 is installed below the discharge robot 14. The discharge track 15 is inclined to the lower right.

[0035] The device consists of a rotatable conveyor turntable and a stationary fixed plate. Positioning mechanisms are evenly installed on the conveyor turntable to position the joints and spring tubes. An air-guiding mechanism is installed on the fixed plate, connected to the positioning mechanism via an air-guiding pipe that extends into the guide hole of the positioning mechanism. After the joint and spring tube are positioned, the air-guiding pipe connects to the vent hole of the joint, continuously supplying air into the joint during welding to ensure that waste generated during welding does not clog the vent hole of the joint or the inner cavity of the spring tube. The positioning mechanism includes an elastic limiting mechanism that works with a limiting block to position the spring tube. Correspondingly, a push rod in the discharge mechanism lifts the pressure rod in the elastic limiting mechanism, allowing for the smooth removal of the welded joint and spring tube. A coolant supply pipe in the welding mechanism sprays coolant after welding for rapid cooling. The overall structure is simple and easy to operate. This device replaces manual operation with mechanization, automatically completing the welding process of the joint and spring tube and achieving automatic discharge, freeing up labor, improving production efficiency, and eliminating safety hazards.

[0036] In practical use, for ease of understanding of this utility model, it will be described in conjunction with the accompanying drawings;

[0037] like Figure 4 The image shows a spring tube 16. The spring tube 16 is hollow inside and open at one end. The left end is the open end 161, which is used to connect to the connector 17.

[0038] like Figure 5 The connector 17 is shown. A groove 171 is machined on the connector 17. The open end 161 is fixedly connected to the groove 171 by welding. A vent hole 172 is machined inside the connector 17 and is connected to the groove 171.

[0039] During operation, the motor starts, and the output shaft of the motor drives the bevel gear I to rotate through the grooved wheel mechanism. The bevel gear I drives the bevel gear to rotate. For every rotation of the output shaft of the motor, the conveyor turntable rotates once. The positioning mechanism completes one positioning of the joint and the spring tube, the welding mechanism completes one welding, and the discharging mechanism completes one discharging.

[0040] During positioning, the connector is first placed in the positioning groove of the positioning seat, with the grooved end facing outward and extending out of the positioning groove. Then, the spring tube is placed on the groove. When placed, the top of the spring tube contacts the bottom of the pressure rod of the elastic limiting mechanism and generates an upward force on the pressure rod. After the pressure rod is subjected to force, it moves upward along the bushing, and the tension spring is elastically stretched accordingly. After the spring tube is placed, the pressure rod presses the top of the spring tube tightly against the elastic recovery of the tension spring. The right end of the spring tube abuts against the inclined surface of the limiting block. The pressure rod and the limiting block work together to complete the positioning of the spring tube. The steering wheel of the air distributor can rotate relative to the air distribution chamber. The steering wheel and the conveying turntable are fixedly connected by a vertical rod, so that the steering wheel can rotate with the conveying turntable. The steering wheel is connected to one end of the air guide pipe, and the other end of the air guide pipe extends into the guide hole of the positioning seat and is connected to the connector.

[0041] During welding, the cylinder works, and the push block at the top of the cylinder lever moves the solder upward. At the same time, the left punch moves a certain distance to the right, the movable frame moves downward along the left punch, and the welding gun moves left and right on the movable frame to complete the welding. After welding, the welding gun and the movable frame reset, and the coolant pipe sprays coolant onto the weld to achieve rapid cooling. The air guiding mechanism continuously introduces air into the vent hole of the joint through the air guiding pipe to ensure that the waste generated during the welding process does not block the vent hole in the joint and the inner cavity of the spring tube.

[0042] During discharge, the right punch moves to the left, and the inclined surface I of the ejector rod first contacts the head of the pressure rod. The inclined surface I generates an upward thrust on the pressure rod, which rises along the bushing under the action of this thrust. The pressure rod disengages from the spring tube, and then the discharge robot works, and the clamping part closes to clamp the joint. When the right punch resets, the discharge robot separates the joint and spring tube from the positioning seat, and then the clamping part releases, and the joint and spring tube fall onto the discharge track below.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic welding device for pressure gauge connectors and Bourdon tubes, characterized in that: Includes a positioning shaft (2), which is installed in the middle of the worktable (1); A conveying turntable (5) is mounted on the positioning shaft (2), and positioning mechanisms (9) are evenly installed on the conveying turntable (5) near the circumference; The positioning mechanism (9) includes a positioning seat (91), a stepped surface (911) is formed on the upper part of the positioning seat (91), an elastic limiting mechanism (92) is installed on the stepped surface (911), a positioning groove (912) is formed in the middle of the positioning seat (91), and a guide hole (913) is formed on the inner side wall of the positioning groove (912) through the positioning seat (91); A fixed plate (13) is installed on the upper part of the positioning shaft (2). An air guiding mechanism (12) is installed on the fixed plate (13). The air guiding mechanism (12) is connected to the guide hole (913) through an air guiding pipe (124). A welding mechanism (10) is installed to the left of the conveyor turntable (5), and a solder feeding mechanism (8) is installed below the welding mechanism (10).

2. The automatic welding device for pressure gauge connectors and Bourdon tubes according to claim 1, characterized in that: A gear set (4) is installed below the conveyor turntable (5). The gear set (4) includes a bevel gear (41) fixedly connected to the conveyor turntable (5) and a bevel gear I (42) meshing with the bevel gear (41). A motor (7) is installed on the left side of the worktable (1). The motor (7) drives the gear set (4) to rotate through a Geneva mechanism (6). The Geneva mechanism (6) includes an active dial (61) and a Geneva wheel (62). The active dial (61) is coaxially connected to the motor (7), and the Geneva wheel (62) is coaxially connected to the bevel gear I (42).

3. The automatic welding device for pressure gauge connectors and Bourdon tubes according to claim 1, characterized in that: The elastic limiting mechanism (92) includes a bushing (922), which is bolted to the side wall of the stepped surface (911). A pressure rod (921) is installed inside the bushing (922). The pressure rod (921) is T-shaped. A tension spring (923) is installed between the head of the pressure rod (921) and the bushing (922). The radial cross-section of the rod part of the pressure rod (921) is square.

4. The automatic welding device for pressure gauge connectors and Bourdon tubes according to claim 3, characterized in that: The positioning seat (91) is equipped with a limiting block (93) at its lower part, and the upper left part of the limiting block (93) is machined to form an inclined surface (931).

5. The automatic welding device for pressure gauge connectors and Bourdon tubes according to claim 1, characterized in that: The air guiding mechanism (12) includes an air generator (121) mounted on the fixed plate (13). An air distributor (122) is mounted above the air generator (121). The air distributor (122) includes an air distribution chamber (1221) and a steering wheel (1222). The air distribution chamber (1221) is connected to the air generator (121) through an air inlet pipe (123). The steering wheel (1222) is connected to one end of the air guiding pipe (124). The other end of the air guiding pipe (124) extends into the guide hole (913). A crossbar (1223) is also provided on the side wall of the steering wheel (1222). The crossbar (1223) is fixedly connected to the conveying turntable (5) through a vertical rod (11).

6. The automatic welding device for pressure gauge connectors and Bourdon tubes according to claim 1, characterized in that: The welding mechanism (10) includes a left punch (101), a movable frame (102) is installed on the upper right side of the left punch (101), a welding gun (103) is installed on the movable frame (102), and a coolant pipe (104) is installed on the lower right side of the left punch (101).

7. The automatic welding device for pressure gauge connectors and Bourdon tubes according to claim 6, characterized in that: The movable frame (102) can move up and down along the left punch (101), and the welding torch (103) can move left and right along the movable frame (102).

8. The automatic welding device for pressure gauge connectors and Bourdon tubes according to claim 1, characterized in that: The solder feeding mechanism (8) includes a cylinder (81), a push block (82) is mounted on the top of the lever of the cylinder (81), and solder (83) is fixed on the push block (82).

9. The automatic welding device for pressure gauge connectors and Bourdon tubes according to claim 1, characterized in that: A discharge mechanism (14) is installed on the right side of the conveyor turntable (5). The discharge mechanism (14) includes a right punch (141). A push rod (142) is installed horizontally on the upper left side of the right punch (141). The left end of the push rod (142) is machined to form a slope I (1421). A discharge robot (143) is installed on the lower left side of the right punch (141). The discharge robot (143) is provided with a clamping part (144).

10. An automatic welding device for a pressure gauge connector and a Bourdon tube according to claim 9, characterized in that: The discharge robot (14) is equipped with a discharge track (15) below it, and the discharge track (15) is inclined to the lower right.

Images