Positioning mechanism for corrugated pipe welding

Abstract

The utility model discloses a positioning mechanism for corrugated pipe welding, which comprises a fixed seat, two symmetrically distributed supporting vertical plates are fixed on the upper surface of the fixed seat, adjusting electric telescopic rods are fixed on the middle parts of the mutually facing surfaces of the two supporting vertical plates, adjusting rings are fixed on the movable end parts of the adjusting electric telescopic rods, and the adjusting rings are fixed on the movable end parts of the adjusting electric telescopic rods. Movable electric telescopic rods are arranged above and below the adjusting electric telescopic rods, one ends of the movable electric telescopic rods are fixed to the supporting vertical plates, and movable rings are fixed to the movable ends of the two movable electric telescopic rods fixed to the same supporting vertical plate; a plurality of corrugated pipe inner supporting rods are arranged around the adjusting electric telescopic rod. According to the utility model, the corrugated pipe is positioned and supported from the inside of the corrugated pipe by using the supporting rod inside the corrugated pipe, after the corrugated pipe is positioned and fixed, when a worker or welding equipment performs welding, the welding operation is not hindered and influenced, and the corrugated pipes with different diameters can be positioned and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows processing, in particular to a positioning mechanism for bellows welding. Background Technique

[0002] A bellows refers to a tubular elastic sensitive element formed by connecting foldable corrugated sheets along the folding and telescoping direction. Bellows are widely used in instruments and meters. Their main purpose is to serve as a measuring element for pressure measuring instruments, converting pressure into displacement or force. The bellows tube wall is relatively thin, with high sensitivity, and the measurement range is from dozens of pascals to dozens of megapascals. Its open end is fixed, and the sealed end is in a free state, and an auxiliary helical spring or reed is used to increase elasticity.

[0003] However, when the bellows is welded and fixed, due to the need for bellows welding, it is necessary to position the bellows from the outside and clamp the end of the bellows, resulting in the clamping component affecting the welding operation. Therefore, it does not meet the existing requirements, and for this reason, we propose a positioning mechanism for bellows welding. Content of the Utility Model

[0004] The purpose of the utility model is to provide a positioning mechanism for bellows welding to solve the problems mentioned in the above background technique, such as when the bellows is welded and fixed, due to the need for bellows welding, it is necessary to position the bellows from the outside and clamp the end of the bellows, resulting in the clamping component affecting the welding operation.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A positioning mechanism for bellows welding, including a fixed seat, on the upper surface of the fixed seat, two symmetrically distributed support vertical plates are fixed. In the middle of the mutually facing surfaces of the two support vertical plates, adjusting electric telescopic rods are fixed. The movable end of the adjusting electric telescopic rod is fixed with an adjusting ring. Above and below the adjusting electric telescopic rod, moving electric telescopic rods are provided. One end of the moving electric telescopic rod is fixed to the support vertical plate. The movable ends of the two moving electric telescopic rods fixed to the same support vertical plate are fixed with a moving ring. Around the adjusting electric telescopic rod, there are a plurality of bellows internal support rods. The plurality of bellows internal support rods are distributed in a circular array around the axis of the adjusting electric telescopic rod. One end of the bellows internal support rod is fixed to the support vertical plate.

[0006] Preferably, the number of bellows internal support rods around the adjusting electric telescopic rod is at least three. The bellows internal support rod includes a fixed rod. One end of the fixed rod is connected to the support vertical plate. The other end of the fixed rod is fixed with a guide rod. The other end of the guide rod is fixed with a bent connecting end block. The guide rod is in an inclined state with an inclination angle of 30 degrees to 45 degrees.

[0007] Preferably, the bent connecting end block is made of elastic metal material. The end of the bent connecting end block and the guide rod is arc-shaped, and the other end of the bent connecting end block is parallel to the axis of the adjusting electric telescopic rod.

[0008] Preferably, a connecting rod is fixed to the other end of the bent connecting end block. A positioning rod is slidably installed on the outer side of the other end of the connecting rod. A guide hole is provided inside the positioning rod. The end of the connecting rod connected to the positioning rod is slidably inserted inside the guide hole. A return spring is provided inside the guide hole. The return spring is located between the connecting rod and the positioning rod and one end thereof is fixed to the positioning rod.

[0009] Preferably, two limiting plates are detachably installed at the port of the guide hole by screws. The two limiting plates are semi-circular and are clamped on the outer side of the end of the connecting rod.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. In the present utility model, the corrugated pipe is sleeved outside the internal support rod of the corrugated pipe distributed in a circular array around the adjusting electric telescopic rod. Then, the adjusting electric telescopic rod is powered on and started to drive the adjusting ring to approach the supporting vertical plate, so that the adjusting ring squeezes the internal support rod of the corrugated pipe, causing the end of the internal support rod of the corrugated pipe away from the supporting vertical plate to approach the inner wall of the corrugated pipe. The internal support rod of the corrugated pipe is used to position and support the corrugated pipe from inside the corrugated pipe. After the corrugated pipe is positioned and fixed, when the staff or welding equipment performs welding, the welding operation will not be hindered or affected, and the corrugated pipes with different diameters can be positioned and fixed.

[0012] 2. In the present utility model, a slidable positioning rod is installed on the outer side of the connecting rod, and the connecting rod and the positioning rod are elastically connected by a return spring, which can change the distance between two positioning rods with coincident axes, so as to facilitate placing the corrugated pipe and installing the corrugated pipe outside the internal support rod of the corrugated pipe. After the corrugated pipe is installed, the positioning rod can automatically reset and support and position the corrugated pipe from the inside. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0014] Figure 2 is a schematic structural diagram of the internal support rod of the corrugated pipe of the present utility model;

[0015] Figure 3 is a structural sectional view of the positioning rod of the present utility model.

[0016] In the figure: 1, fixed seat; 2, supporting vertical plate; 3, adjusting electric telescopic rod; 4, moving electric telescopic rod; 5, moving ring; 6, internal support rod of bellows; 61, fixed rod; 62, guide rod; 63, bent connecting end block; 64, connecting rod; 65, positioning rod; 66, guide hole; 67, return spring; 68, limiting plate; 7, adjusting ring. Specific implementation manner

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0018] As Figure 1 Shown is a positioning mechanism for bellows welding. Two symmetrically distributed supporting vertical plates 2 are fixed on the upper surface of the fixed seat 1. Adjusting electric telescopic rods 3 are fixed in the middle of the mutually facing surfaces of the two supporting vertical plates 2. The movable end of the adjusting electric telescopic rod 3 is fixed with an adjusting ring 7. Moving electric telescopic rods 4 are arranged above and below the adjusting electric telescopic rod 3. One end of the moving electric telescopic rod 4 is fixed to the supporting vertical plate 2. The movable ends of the two moving electric telescopic rods 4 fixed to the same supporting vertical plate 2 are fixed with a moving ring 5. A plurality of internal support rods 6 of the bellows are arranged around the adjusting electric telescopic rod 3. The plurality of internal support rods 6 of the bellows are distributed in a circular array around the axis of the adjusting electric telescopic rod 3. One end of the internal support rod 6 of the bellows is fixed to the supporting vertical plate 2. The bellows is sleeved outside the internal support rods 6 of the bellows distributed in a circular array around the adjusting electric telescopic rod 3. Then, the adjusting electric telescopic rod 3 is powered on and started to drive the adjusting ring 7 to approach the supporting vertical plate 2, so that the adjusting ring 7 squeezes the internal support rod 6 of the bellows, causing the end of the internal support rod 6 of the bellows away from the supporting vertical plate 2 to approach the inner wall of the bellows, and positioning and supporting the bellows from the inside of the bellows by using the internal support rod 6 of the bellows.

[0019] As Figures 2 to 3As shown, the minimum number of internal support rods 6 of the bellows around the adjustable electric telescopic rod 3 is three. The internal support rod 6 of the bellows includes a fixed rod 61. One end of the fixed rod 61 is connected to the support vertical plate 2, and a guide rod 62 is fixed to the other end of the fixed rod 61. A bent connection end block 63 is fixed to the other end of the guide rod 62. The guide rod 62 is in an inclined state with an inclination angle of 30 degrees to 45 degrees. The bent connection end block 63 is made of elastic metal material. The end of the bent connection end block 63 and the guide rod 62 are arc-shaped. The other end of the bent connection end block 63 is parallel to the axis of the adjustable electric telescopic rod 3. When the inclined guide rod 62 is squeezed by the adjusting ring 7, the guide rod 62 can drive the bent connection end block 63, the connecting rod 64, and the positioning rod 65 to move outward, so as to contact the inner wall of the bellows and support and position the bellows from the inside, ensuring that the axis of the bellows coincides with the axis of the adjustable electric telescopic rod 3.

[0020] A connecting rod 64 is fixed to the other end of the bent connection end block 63. A positioning rod 65 is slidably installed on the outer side of the other end of the connecting rod 64. A guide hole 66 is provided inside the positioning rod 65. The end of the connecting rod 64 connected to the positioning rod 65 is slidably inserted inside the guide hole 66. A return spring 67 is provided inside the guide hole 66. The return spring 67 is located between the connecting rod 64 and the positioning rod 65 and one end is fixed to the positioning rod 65. The positioning rod 65 can slide on the outer side of the connecting rod 64 along the axis of the connecting rod 64. After the positioning rod 65 approaches the bent connection end block 63, it is convenient to install the bellows and sleeved on the outer side of the internal support rod 6 of the bellows.

[0021] Two limit plates 68 are detachably installed at the port of the guide hole 66 by screws. The two limit plates 68 are semi-circular and are clamped on the outer side of the end of the connecting rod 64. The connecting rod 64 and the positioning rod 65 are connected by the limit plates 68, so that the positioning rod 65 will not fall off the outer side of the end of the connecting rod 64 during the sliding process of the positioning rod 65 on the outer side of the connecting rod 64.

[0022] Working principle: When welding the corrugated pipe, first slide the positioning rod 65 towards the bent connection end block 63, so that there is enough clearance between the corrugated pipe inner support rods 6 fixed on the surfaces of the two support vertical plates 2 for the installation and placement of the corrugated pipe. After the corrugated pipe is sleeved outside all the corrugated pipe inner support rods 6, release the positioning rod 65 so that the return spring 67 elastically resumes and drives the positioning rod 65 to return to its original position. After both corrugated pipes for welding are installed, the two adjusting electric telescopic rods 3 are simultaneously powered on and started. The adjusting electric telescopic rod 3 drives the adjusting ring 7 to approach the support vertical plate 2, so that the adjusting ring 7 contacts the guide rod 62 and squeezes the guide rod 62, causing all the bent connection end blocks 63, connecting rods 64, and positioning rods 65 to approach the inner wall of the corrugated pipe and squeeze the inner wall of the corrugated pipe. Use the bent connection end blocks 63, connecting rods 64, and positioning rods 65 to position and support the bent connection end blocks 63, connecting rods 64, and positioning rods 65 from the inside of the corrugated pipe. At this time, the axis of the corrugated pipe coincides with the axis of the adjusting electric telescopic rod 3 and the axes of the two bent connection end blocks 63, connecting rods 64, and positioning rods 65 are collinear. Finally, connect the power supply of the moving electric telescopic rod 4, so that the moving electric telescopic rod 4 pushes the moving ring 5 towards the end of the corrugated pipe, causing the moving ring 5 to push the corrugated pipe to slide outwards on the positioning rod 65 until the ends of the two corrugated pipes are mutually attached. At this time, the welding operation of the corrugated pipe is carried out. The welding operation will not be hindered and affected, and the corrugated pipes with different diameters can be positioned and fixed.

[0023] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A positioning mechanism for bellows welding, comprising a fixing seat (1), characterized in that: Two symmetrically distributed supporting uprights (2) are fixed on the upper surface of the fixed seat (1); an adjustable electric telescopic rod (3) is fixed in the middle of the mutually facing surfaces of the two supporting uprights (2); an adjusting ring (7) is fixed to the movable end of the adjustable electric telescopic rod (3); a movable electric telescopic rod (4) is provided above and below the adjustable electric telescopic rod (3); one end of the movable electric telescopic rod (4) is fixed to the supporting upright (2); a movable ring (5) is fixed to the movable ends of the two movable electric telescopic rods (4) fixed to the same supporting upright (2); a plurality of bellows internal support rods (6) are provided around the adjustable electric telescopic rod (3); the plurality of bellows internal support rods (6) are distributed in a circular array around the axis of the adjustable electric telescopic rod (3); one end of the bellows internal support rod (6) is fixed to the supporting upright (2).

2. A positioning mechanism for bellows welding according to claim 1, characterized in that: The number of the bellows internal support rods (6) around the adjustable electric telescopic rod (3) is at least three, and the bellows internal support rods (6) include a fixing rod (61), one end of the fixing rod (61) is connected to the supporting vertical plate (2), the other end of the fixing rod (61) is fixed with a guide rod (62), the other end of the guide rod (62) is fixed with a bent connecting end block (63), and the guide rod (62) is in an inclined state with an inclination angle of thirty to forty-five degrees.

3. A positioning mechanism for bellows welding according to claim 2, characterized in that: The bent connection end block (63) is made of elastic metal material, the bent connection end block (63) and the end of the guide rod (62) are bent in an arc shape, and the other end of the bent connection end block (63) remains parallel to the axis of the adjustable electric telescopic rod (3).

4. A positioning mechanism for bellows welding according to claim 3, characterized in that: A connecting rod (64) is fixed to the other end of the curved connecting end block (63), a positioning rod (65) is slidably mounted on the outside of the other end of the connecting rod (64), a guide hole (66) is provided inside the positioning rod (65), the end of the connecting rod (64) connected to the positioning rod (65) is slidably inserted into the inside of the guide hole (66), a return spring (67) is provided inside the guide hole (66), the return spring (67) is located between the connecting rod (64) and the positioning rod (65), and one end of the return spring (67) is fixed to the positioning rod (65).

5. A positioning mechanism for bellows welding according to claim 4, characterized in that: Two limit plates (68) are detachably mounted at the end of the guide hole (66) by means of screws. The two limit plates (68) are semicircular and are clamped on the outer side of the end of the connecting rod (64).

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