A welding device for a pressure gauge inner mechanism

Abstract

A kind of welding device of pressure gauge inner machine, including conveying carousel, positioning mechanism is uniformly installed near the circumference on conveying carousel, and welding mechanism is equipped outside the welding station of conveying carousel;Positioning mechanism includes mounting seat, joint positioning block is placed joint in the middle part outside mounting seat, arc-shaped pressing plate is equipped above joint positioning block and joint is pressed tightly, connecting piece positioning block is placed connecting piece below joint positioning block, side pressing rod is equipped below connecting piece positioning block and connecting piece end is pressed tightly and positioned, pressing block is equipped above arc-shaped pressing plate, spring tube is connected with joint and connecting piece respectively after both ends, spring tube upper part is pressed tightly by pressing block, and integral type machine core assembly is formed after welding between joint and spring tube, between spring tube and connecting piece by welding mechanism;The device is positioned accurately and conveniently by setting multiple positioning structures in positioning mechanism, respectively joint, spring tube, connecting piece are pressed tightly and positioned, welding precision and welding efficiency are effectively improved.

Description

Technical Field

[0001] This utility model relates to a welding device for the internal mechanism of a pressure gauge. Background Technology

[0002] A pressure gauge is an instrument that uses an elastic element as its sensing element to measure and indicate pressures higher than the ambient pressure. The pressure gauge transmits the pressure deformation to the pointer through the elastic deformation of the sensing element inside the gauge, and the pointer rotates to display the pressure. Pressure gauges are used in almost all industrial processes and scientific research fields.

[0003] The Bourdon tube is one of the important components of a pressure gauge. Both ends of the Bourdon tube are fixed to the connector and the connecting piece by welding. The connecting piece is hinged to the sector teeth in the movement through the connecting rod. The existing welding process mostly adopts step welding, and the welding is mostly done by workers holding it manually. On the one hand, it poses safety hazards and makes it difficult to guarantee the processing accuracy. On the other hand, the processing efficiency is not high. Utility Model Content

[0004] To address the shortcomings mentioned above, this utility model provides a welding device for the internal mechanism of a pressure gauge.

[0005] To achieve the above objectives, this utility model provides a welding device for the internal machine of a pressure gauge, including a conveying turntable. The center of the conveying turntable is fixed on a cam divider. Positioning mechanisms are evenly installed on the conveying turntable near the circumference. The conveying turntable is provided with a feeding station, a welding station, and a discharging station along the clockwise rotation direction. A welding mechanism is provided on the outside of the welding station.

[0006] The positioning mechanism includes a mounting base, a connector positioning block is provided in the middle of the outer side of the mounting base, an arc-shaped pressure plate is provided above the connector positioning block, the connector is placed on the connector positioning block, the arc-shaped pressure plate presses and positions the upper part of the connector, a connector positioning block is provided below the connector positioning block, a side pressure rod is provided below the connector positioning block, one end of the side pressure rod is connected to a linear rotary cylinder, the connector is placed on the connector positioning block, the free end of the side pressure rod presses and positions the end of the connector, a pressure block is provided above the arc-shaped pressure plate, after the two ends of the spring tube are respectively connected to the connector and the connector, the pressure block presses and positions the upper part of the spring tube.

[0007] The joint and the spring tube, as well as the spring tube and the connector, are welded together by the welding mechanism to form an integral movement assembly.

[0008] As a further improvement of this utility model, the outer side of the connector positioning block is provided with positioning rods that match the threaded holes on the connector. The positioning rods and the inner holes on the connector positioning block are machined to avoid the fixed shaft on the connector. The lower part of the connector positioning block extends forward to form a support block, and the support block provides support for the lower part of the connector.

[0009] As a further improvement of this utility model, the curvature of the arc-shaped pressure plate matches the outer circumferential surface of the joint, and the rear part of the arc-shaped pressure plate is connected to the push cylinder via a push block.

[0010] As a further improvement of this utility model, the thickness of the arc-shaped pressure plate is less than the distance between the outer peripheral surface of the joint and the inner wall surface of the spring tube.

[0011] As a further improvement of this utility model, a positioning groove is machined on the upper part of the connector positioning block, the connector is placed in the positioning groove, and the connecting plate of the connector abuts against the end face of the connector positioning block.

[0012] As a further improvement of this utility model, a notch is machined on the side of the end of the side pressure rod facing the positioning block of the connector, and the linear rotary cylinder is fixed inside the mounting base.

[0013] As a further improvement of this utility model, the lower part of the pressure block is machined with an arc-shaped inner groove, the width of the arc-shaped inner groove is matched with the width of the spring tube, and the curvature of the arc-shaped inner groove is matched with the curvature of the outer circumferential surface of the spring tube. The upper part of the pressure block is connected to a push cylinder I, and the push cylinder I is installed on the upper part of the mounting base.

[0014] The beneficial effects of this utility model are as follows:

[0015] This device uses multiple positioning structures in its positioning mechanism to press and position the joint, spring tube, and connecting parts respectively. It has a compact structure and accurate and convenient positioning. At the same time, the two ends of the spring tube are welded, which effectively improves the welding accuracy and welding efficiency. Attached Figure Description

[0016] Figure 1 This is a front view of a welding device for the internal mechanism of a pressure gauge according to the present invention.

[0017] Figure 2 This is a top view of a welding device for the internal mechanism of a pressure gauge according to the present invention.

[0018] Figure 3 This is the front view of positioning mechanism 3;

[0019] Figure 4 View A of positioning mechanism 3;

[0020] Figure 5This is a diagram showing the positioning structure of the movement assembly 5 on the positioning mechanism 3.

[0021] Figure 6 This is a schematic diagram of the structure of movement component 5 after welding.

[0022] Figure 7 This is a schematic diagram of the structure of connector 51;

[0023] Figure 8 This is a sectional view of connector 53.

[0024] In the diagram: 1. Cam divider; 2. Conveyor turntable; 21. Feeding station; 22. Welding station; 23. Discharge station; 3. Positioning mechanism; 31. Mounting base; 32. Joint positioning block; 321. Positioning rod; 322. Inner hole; 323. Support block; 33. Connector positioning block; 331. Positioning groove; 34. Side pressure rod; 341. Notch; 342. Straight rotary cylinder; 35. Arc-shaped pressure plate; 351. Push block; 352. Top-push cylinder; 36. Pressure block; 361. Arc-shaped inner groove; 362. Top-push cylinder I; 4. Welding mechanism; 5. Core assembly; 51. Joint; 511. Threaded hole; 512. Groove; 513. Fixed shaft; 52. Spring tube; 53. Connector; 531. Groove I; 532. Connecting plate. Detailed Implementation

[0025] like Figure 1-2 As shown, the welding device for the internal machine of a pressure gauge according to the present invention includes a conveying turntable 2. The center of the conveying turntable 2 is fixed on the cam divider 1. Positioning mechanisms 3 are evenly installed on the conveying turntable 2 near the circumference. The conveying turntable 2 is provided with a feeding station 21, a welding station 22, and a discharging station 23 along the clockwise rotation direction. A welding mechanism 4 is provided on the outside of the welding station 22.

[0026] The positioning mechanism 3 includes a mounting base 31. A connector positioning block 32 is provided on the middle of the outer side of the mounting base 31. An arc-shaped pressure plate 35 is provided above the connector positioning block 32. The connector 51 is placed on the connector positioning block 32, and the arc-shaped pressure plate 35 presses and positions the upper part of the connector 51. Positioning rods 321 are symmetrically arranged on the outer side of the connector positioning block 32 to match the threaded holes 511 on the connector 51. The positioning rods 321 and the inner holes 322 machined on the connector positioning block 32 are used to avoid the fixed shaft 51 on the connector 51. 3. The lower part of the connector positioning block 32 extends forward to form a support block 323, which supports the lower part of the connector 51. The curvature of the arc-shaped pressure plate 35 matches the outer circumferential surface of the connector 51. The rear part of the arc-shaped pressure plate 35 is connected to the push cylinder 352 via the push block 351. The thickness of the arc-shaped pressure plate 35 is less than the distance between the outer circumferential surface of the connector 51 and the inner wall surface of the spring tube 52. A connecting member positioning block 33 is provided below the connector positioning block 32, and a side pressure rod 34 is provided below the connecting member positioning block 33. One end of rod 34 is connected to a linear rotary cylinder 342. Connector 53 is placed on connector positioning block 33. The free end of side pressure rod 34 presses and positions the end of connector 53. A positioning groove 331 is machined on the upper part of connector positioning block 33. Connector 53 is placed in the positioning groove 331. Connecting plate 532 of connector 53 abuts against the end face of connector positioning block 33. A notch 341 is machined on the side of side pressure rod 34 facing connector positioning block 33. Linear rotary cylinder 342 is fixed to mounting base 3. On the inner side, a pressure block 36 is provided above the arc-shaped pressure plate 35. After the two ends of the spring tube 52 are connected to the connector 51 and the connecting piece 53 respectively, the pressure block 36 presses the upper part of the spring tube 52 tightly. The lower part of the pressure block 36 is machined with an arc-shaped inner groove 361. The width of the arc-shaped inner groove 361 matches the width of the spring tube 52, and the curvature of the arc-shaped inner groove 361 matches the curvature of the outer circumference of the spring tube 52. The upper part of the pressure block 36 is connected to the push cylinder I 362, which is installed on the upper part of the mounting base 31 (see...). Figure 3-5 );

[0027] The joint 51 and the spring tube 52, and the spring tube 52 and the connector 53 are welded together by the welding mechanism 4 to form an integral movement assembly 5.

[0028] This device uses multiple positioning structures in its positioning mechanism to press and position the joint, spring tube, and connecting parts respectively. It has a compact structure and accurate and convenient positioning. At the same time, the two ends of the spring tube are welded, which effectively improves the welding accuracy and welding efficiency.

[0029] In practical use, for ease of understanding of this utility model, it will be described in conjunction with the accompanying drawings;

[0030] like Figure 6The movement assembly 5 shown includes a connector 51, a spring tube 52, and a connector 53. The connector 51 has threaded holes 511 on both sides, a fixed shaft 513 in the middle, and grooves 512 machined on the side for connecting the spring tube 52. An air inlet is located at the center of the fixed shaft 513, connecting to the groove 512 (see [reference]). Figure 7 The connector 53 has a groove I 531 on one side for connecting the spring tube 52, and an integral connecting plate 532 on the other side (see...). Figure 8 The device in this embodiment is used to simultaneously weld and fix both ends of the spring tube;

[0031] During operation, each rotation of the conveyor turntable moves one station. At the feeding station, the connector, connecting piece, and spring tube are sequentially positioned on the positioning mechanism. First, the connector is placed on the connector positioning block with its groove facing upwards. The positioning rod on the connector positioning block passes through the threaded hole on the connector, and the fixing shaft of the connector extends into the inner hole of the connector positioning block. The support block at the bottom of the connector positioning block provides support for the bottom of the connector. Then, the push cylinder moves the arc-shaped pressure plate downwards and presses the connector into position. Next, the connecting piece is placed in the positioning groove of the connecting piece positioning block with its groove facing upwards. The connecting plate of the connecting piece abuts against the end face of the connecting piece positioning block. The linear rotary cylinder drives the side pressure... The rod rotates clockwise and moves closer to the connector. The end of the side pressure rod presses against the front end of the connector. Then, the spring tube is placed, with its open end extending into the groove of the connector and its closed end extending into groove I of the connector. Finally, the push cylinder I moves the pressure block down and presses the spring tube tightly. The upper part of the spring tube extends into the arc-shaped inner groove of the pressure block, thus completing the positioning of the connector, connector, and spring tube. At the welding station, the welding mechanism simultaneously welds the connection between the connector and the spring tube, and the connection between the spring tube and the connector, forming an integral core assembly. At the unloading station, after the pressure block, side pressure rod, and arc-shaped pressure plate are reset in sequence, the welded core assembly can be removed.

[0032] 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. A welding device for the internal mechanism of a pressure gauge, characterized in that: Includes a conveyor turntable (2), the center of which is fixed on a cam divider (1), and a positioning mechanism (3) is evenly installed on the conveyor turntable (2) near the circumference. The conveyor turntable (2) is provided with a feeding station (21), a welding station (22), and a discharging station (23) along the clockwise rotation direction. A welding mechanism (4) is provided on the outside of the welding station (22). The positioning mechanism (3) includes a mounting base (31), a connector positioning block (32) is provided in the middle of the outer side of the mounting base (31), an arc-shaped pressure plate (35) is provided above the connector positioning block (32), the connector (51) is placed on the connector positioning block (32), the arc-shaped pressure plate (35) presses and positions the upper part of the connector (51), a connector positioning block (33) is provided below the connector positioning block (32), and a side pressure rod is provided below the connector positioning block (33). (34), one end of the side pressure rod (34) is connected to the straight rotary cylinder (342), the connector (53) is placed on the connector positioning block (33), the free end of the side pressure rod (34) presses and positions the end of the connector (53), a pressure block (36) is provided above the arc-shaped pressure plate (35), after the two ends of the spring tube (52) are connected to the joint (51) and the connector (53) respectively, the pressure block (36) presses the upper part of the spring tube (52); The joint (51) and the spring tube (52), and the spring tube (52) and the connector (53) are welded together by the welding mechanism (4) to form an integral movement assembly (5).

2. The welding device for the internal mechanism of a pressure gauge according to claim 1, characterized in that: The connector positioning block (32) has symmetrically arranged positioning rods (321) on its outer side, which match the threaded holes (511) on the connector (51). The positioning rods (321) and the inner holes (322) machined on the connector positioning block (32) are used to avoid the fixed shaft (513) on the connector (51). The lower part of the connector positioning block (32) extends forward to form a support block (323), and the support block (323) provides support for the lower part of the connector (51).

3. The welding device for the internal mechanism of a pressure gauge according to claim 1, characterized in that: The arc of the arc-shaped pressure plate (35) matches the outer circumference of the joint (51), and the rear part of the arc-shaped pressure plate (35) is connected to the push cylinder (352) through the push block (351).

4. The welding device for the internal mechanism of a pressure gauge according to claim 1, characterized in that: The thickness of the arc-shaped pressure plate (35) is less than the distance between the outer peripheral surface of the connector (51) and the inner wall surface of the spring tube (52).

5. The welding device for the internal mechanism of a pressure gauge according to claim 1, characterized in that: The upper part of the connector positioning block (33) is machined with a positioning groove (331), the connector (53) is placed in the positioning groove (331), and the connecting plate (532) of the connector (53) abuts against the end face of the connector positioning block (33).

6. The welding device for the internal mechanism of a pressure gauge according to claim 1, characterized in that: The end of the side pressure rod (34) has a notch (341) machined on the side facing the connector positioning block (33), and the straight rotary cylinder (342) is fixed inside the mounting base (31).

7. The welding device for the internal unit of a pressure gauge according to claim 1, characterized in that: The lower part of the pressure block (36) is machined with an arc-shaped inner groove (361). The width of the arc-shaped inner groove (361) matches the width of the spring tube (52). The curvature of the arc-shaped inner groove (361) matches the curvature of the outer circumferential surface of the spring tube (52). The upper part of the pressure block (36) is connected to the push cylinder I (362). The push cylinder I (362) is installed on the upper part of the mounting base (31).

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