High-precision mold centering device for polytetrafluoroethylene lining pipeline

Abstract

The utility model discloses a high-precision mould centering device for a polytetrafluoroethylene lining pipeline, which relates to the technical field of pipeline mould centering and comprises a base plate, a center rod is attached to the surface of the base plate in a sliding mode, the base plate is T-shaped, a pipeline body is connected to the surface of the base plate in a sliding mode, a centering mechanism is arranged on the surface of the center rod, and the center rod is connected with the pipeline body in a sliding mode. The centering mechanism comprises a sliding ring, the sliding ring is in sliding connection with the arc face of the center rod, the surface of the sliding ring is in threaded connection with a screw, and the arc face of the sliding ring is fixedly connected with an extension rod. By means of the centering mechanism, pipeline bodies of different sizes and widths can be helped to be centered with the center rod, manual adjustment of workers is not needed, the situation that the thicknesses of the pipelines are different when PTFE lining operation is conducted on the pipelines is prevented, the PTFE lining quality of the pipelines is improved, and the production efficiency is improved. And it is ensured that the pipeline can be used for a long time after being subjected to polytetrafluoroethylene lining operation, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of pipeline mold alignment technology, specifically a high-precision mold alignment device for PTFE-lined pipelines. Background Technology

[0002] The high-precision molds for PTFE-lined pipes stem from the stringent requirements of the chemical industry for corrosion-resistant and high-pressure-resistant pipelines. Polytetrafluoroethylene (PTFE), with its excellent chemical inertness, temperature resistance, and low coefficient of friction, is an ideal choice for lining materials. However, traditional molds used in manufacturing PTFE-lined pipes often face problems such as uneven lining thickness, easy pipe detachment, and interlayer cracking, leading to unstable pipe performance under negative pressure or high-temperature conditions. To solve these problems, high-precision mold technology has emerged. This technology, through optimized mold design and combined with processes such as isobaric molding and integral molding sintering, ensures a uniform and dense PTFE lining layer, effectively resisting negative pressure and high-temperature environments.

[0003] In existing technologies, when placing the pipe and the center rod of the auxiliary mold together for PTFE filling, the center points of the pipe and the center rod need to be manually aligned. However, manual adjustment often results in slight deviations, leading to uneven thickness or distribution of the PTFE lining layer inside the pipe. This can cause problems to appear during long-term use of the PTFE-lined pipe. Utility Model Content

[0004] Technical problems to be solved

[0005] The purpose of this invention is to overcome the shortcomings of existing pipe molds, which are prone to deviation when manually adjusted during alignment.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-precision mold centering device for PTFE-lined pipes, comprising a chassis, a central rod slidably fitted to the surface of the chassis, the chassis being "T"-shaped, a pipe body slidably connected to the surface of the chassis, a centering mechanism provided on the surface of the central rod, the centering mechanism comprising a slip ring, the slip ring being slidably connected to the arc surface of the central rod, a screw threadedly connected to the surface of the slip ring, an extension rod fixedly connected to the arc surface of the slip ring, a rotating plate rotatably connected to the surface of the extension rod, a connecting frame fixedly connected to the surface of the rotating plate, a bidirectional screw rotatably connected to the surface of the connecting frame, two moving plates threadedly connected to the surface of the bidirectional screw, a limit rod fixedly connected to the surface of each of the two moving plates, the limit rod being slidably connected to the connecting frame, and an arc-shaped plate fixedly connected to each of the two moving plates in the direction near the central rod.

[0008] Furthermore, the surface of the slip ring is rotatably connected to four spheres, all of which are slidably connected to the arc surface of the central rod.

[0009] Furthermore, the surface of the extension rod is provided with a sliding hole, and a sliding plate is slidably connected to the surface of the sliding hole. The surface of the rotating plate is provided with an insertion hole, the size of which is the same as the size of the rotating plate.

[0010] Furthermore, a plurality of sponge strips are bonded to the surface of the bidirectional screw, and the plurality of sponge strips are arranged in a circumferential array on the surface of the bidirectional screw.

[0011] Furthermore, the surface of the chassis is provided with an auxiliary mechanism, which includes two arc-shaped frames. Both arc-shaped frames are slidably connected to the upper surface of the chassis. Two rollers are rotatably connected to the lower surface of each of the two arc-shaped frames. The rollers are slidably connected to the upper surface of the chassis. Three sliding rods are slidably connected to the inner wall of each arc-shaped frame. A placement plate is fixedly connected to the end of each of the three sliding rods away from the arc-shaped frame. Springs are sleeved on the surface of each of the three sliding rods. The two ends of the springs are fixedly connected to the placement plate and the arc-shaped frame, respectively. Several anti-slip strips are glued to the upper surface of the placement plate. All of the anti-slip strips are made of rubber.

[0012] Furthermore, the lower surface of the placement plate is chamfered, and the size of the placement plate is adapted to the inner wall size of the arc-shaped frame.

[0013] Furthermore, the surface of the arc-shaped frame is fixedly connected with Velcro and Velcro.

[0014] Compared with existing technologies, this high-precision mold alignment device for PTFE-lined pipes has the following advantages:

[0015] Beneficial effects:

[0016] I. This utility model, through its centering mechanism, enables pipe bodies of different sizes and widths to achieve centering with the central rod without requiring manual adjustment by operators. This prevents uneven thickness during PTFE lining, improves the quality of the PTFE lining, and ensures that the pipe can be used for a longer period after PTFE lining, thus extending its service life.

[0017] Second, the auxiliary mechanism provided in this utility model can assist in adjusting the position of the pipe body to be aligned during the alignment operation between the pipe body and the center rod, reduce the friction between the pipe body and the chassis, and make it easier for the alignment mechanism to drive the pipe body to move. This reduces the burden of driving the pipe body during the alignment operation and further facilitates the operation and use by the staff.

[0018] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the connection between the central rod and the chassis in this utility model;

[0021] Figure 3 In this utility model Figure 2 A partial structural diagram;

[0022] Figure 4 This is a schematic diagram of the auxiliary mechanism in this utility model.

[0023] In the diagram: 1. Chassis; 2. Center rod; 3. Pipe body; 4. Centering mechanism; 401. Slip ring; 402. Screw; 403. Ball; 404. Extension rod; 405. Sliding hole; 406. Slide plate; 407. Rotating plate; 408. Insertion hole; 409. Connecting frame; 410. Two-way screw; 411. Sponge strip; 412. Moving plate; 413. Arc plate; 414. Limiting rod; 5. Auxiliary mechanism; 501. Arc frame; 502. Roller; 503. Velcro; 504. Velcro; 505. Slide rod; 506. Placement plate; 507. Spring; 508. Anti-slip strip. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1-4As shown, this utility model provides a technical solution: a high-precision mold centering device for PTFE-lined pipes, including a base 1, a central rod 2 slidably attached to the surface of the base 1, the base 1 being "T"-shaped, a pipe body 3 slidably connected to the surface of the base 1, a centering mechanism 4 provided on the surface of the central rod 2, the centering mechanism 4 including a slip ring 401, the slip ring 401 being slidably connected to the arc surface of the central rod 2, a screw 402 threadedly connected to the surface of the slip ring 401, an extension rod 404 fixedly connected to the arc surface of the slip ring 401, a rotating plate 407 rotatably connected to the surface of the extension rod 404, a connecting frame 409 fixedly connected to the surface of the rotating plate 407, a bidirectional screw 410 rotatably connected to the surface of the connecting frame 409, and a threaded connection on the surface of the bidirectional screw 410. Two movable plates 412 are connected, and a limit rod 414 is fixedly connected to the surface of each movable plate 412. The limit rod 414 is slidably connected to the connecting frame 409. An arc plate 413 is fixedly connected to each movable plate 412 near the central rod 2. Four balls 403 are rotatably connected to the surface of the slip ring 401. The four balls 403 are slidably connected to the arc surface of the central rod 2. A sliding hole 405 is opened on the surface of the extension rod 404. A sliding plate 406 is slidably connected to the surface of the sliding hole 405. An insertion hole 408 is opened on the surface of the rotating plate 407. The size of the insertion hole 408 is the same as the size of the rotating plate 407. Several sponge strips 411 are glued to the surface of the bidirectional screw 410. The sponge strips 411 are arranged in a circumferential array on the surface of the bidirectional screw 410.

[0026] The center rod 2 is then attached to the base plate 1, completing the fixed placement of the center rod 2. The pipe requiring PTFE lining is then placed through the center rod 2 onto the surface of the base plate 1. Simultaneously, the operator places the slip ring 401 on the surface of the center rod 2. A ball 403 rotates on the surface of the slip ring 401, contacting the arc surface of the center rod 2, allowing the slip ring 401 to slide smoothly on the surface of the center rod 2. The operator then moves the slip ring 401 to a position where the connecting bracket 409 can rotate to the outer arc surface of the pipe body 3. At this point, the screw 402 is rotated, pressing against the surface of the center rod 2, thus limiting the movement of the slip ring 401. Finally, the rotating plate 407 is rotated, moving the connecting bracket 409 to a position parallel to the pipe body 3. The operator then slides the slide plate 406, inserting it into the inner wall of the insertion hole 408. This stabilizes and limits the rotating plate 407, preventing it from rotating during the alignment operation. The operator can then rotate the bidirectional screw 410. The bidirectional screw 410 has a sponge strip 411 on its surface, which improves the comfort of rotating it. The rotation of the bidirectional screw 410 causes the two moving plates 412 to move towards the arc surface of the pipe body 3, simultaneously driving the pipe body 3 to move. When the arc plates 413 on the surfaces of the two moving plates 412 are both in contact with the surface of the pipe body 3, the center rod 2 can achieve alignment with the pipe body 3, preventing uneven thickness during PTFE filling.

[0027] like Figure 1 , Figure 2 and Figure 4 As shown, the surface of the chassis 1 is provided with an auxiliary mechanism 5, which includes two arc-shaped frames 501. Both arc-shaped frames 501 are slidably connected to the upper surface of the chassis 1. Two rollers 502 are rotatably connected to the lower surface of each of the two arc-shaped frames 501. The rollers 502 are slidably connected to the upper surface of the chassis 1. Three sliding rods 505 are slidably connected to the inner wall of the arc-shaped frames 501. A placement plate 506 is fixedly connected to the end of each of the three sliding rods 505 away from the arc-shaped frames 501. Springs 507 are fitted on the surface of rod 505. The two ends of spring 507 are fixedly connected to the placement plate 506 and the arc frame 501 respectively. Several anti-slip strips 508 are glued to the upper surface of the placement plate 506. The anti-slip strips 508 are all made of rubber. The lower surface of the placement plate 506 has a chamfered surface. The size of the placement plate 506 is adapted to the inner wall size of the arc frame 501. Velcro 503 and Velcro 504 are fixedly connected to the surface of the arc frame 501.

[0028] Working principle: Before placing the pipe body 3 on the surface of the base 1, the operator can move the two arc-shaped frames 501 closer together. When they reach the top, the Velcro 504 and Velcro 503 on the surfaces of the two arc-shaped frames 501 can stick together. Then, the operator can place the pipe body 3 on the surface of the arc-shaped frames 501. The placement plate 506 inside the arc-shaped frames 501 will be driven by the spring 507 to press against the surface of one end of the pipe body 3. The surface of the placement plate 506 has anti-slip strips 508 to improve the stability of the pipe body 3. When using the centering mechanism 4, the bidirectional screw 410... When adjusting the alignment of the main pipe body 3 with the center rod 2, the main pipe body 3 is assisted by the arc frame 501 and the bottom roller 502, so that the two moving plates 412 are not subjected to a large force when driving the main pipe body 3 to move, and can be quickly adjusted to the alignment position. After the alignment operation is completed, the operator can press the placement plate 506 so that the placement plate 506 can be hidden inside the arc frame 501. The lower surface of the placement frame has a chamfered surface to prevent jamming during the pressing process. Then the operator can separate the two arc frames 501 and take them out from the bottom of the chassis 1, which increases the practicality of the auxiliary device.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision mold alignment device for PTFE-lined pipes, comprising a chassis (1), characterized in that: A central rod (2) is slidably attached to the surface of the chassis (1). The chassis (1) is T-shaped. A pipe body (3) is slidably connected to the surface of the chassis (1). A centering mechanism (4) is provided on the surface of the central rod (2). The centering mechanism (4) includes a slip ring (401). The slip ring (401) is slidably connected to the arc surface of the central rod (2). A screw (402) is threaded onto the surface of the slip ring (401). An extension rod (404) is fixedly connected to the arc surface of the slip ring (401). The surface of the extension rod (404) can rotate. A rotating plate (407) is connected, and a connecting frame (409) is fixedly connected to the surface of the rotating plate (407). A bidirectional screw (410) is rotatably connected to the surface of the connecting frame (409). Two movable plates (412) are threadedly connected to the surface of the bidirectional screw (410). Limiting rods (414) are fixedly connected to the surfaces of the two movable plates (412). The limiting rods (414) are slidably connected to the connecting frame (409). Arc-shaped plates (413) are fixedly connected to the two movable plates (412) in the direction close to the central rod (2).

2. The high-precision mold centering device for a PTFE-lined pipe according to claim 1, characterized in that: The slip ring (401) has four spheres (403) rotatably connected to its surface, and all four spheres (403) are slidably connected to the arc surface of the central rod (2).

3. The high-precision mold alignment device for a PTFE-lined pipe according to claim 1, characterized in that: The surface of the extension rod (404) is provided with a sliding hole (405), and a sliding plate (406) is slidably connected to the surface of the sliding hole (405). The surface of the rotating plate (407) is provided with an insertion hole (408), and the size of the insertion hole (408) is the same as the size of the rotating plate (407).

4. The high-precision mold centering device for a PTFE-lined pipe according to claim 1, characterized in that: The surface of the bidirectional screw (410) is bonded with a plurality of sponge strips (411), and the plurality of sponge strips (411) are arranged in a circumferential array on the surface of the bidirectional screw (410).

5. The high-precision mold centering device for a PTFE-lined pipe according to claim 1, characterized in that: The surface of the chassis (1) is provided with an auxiliary mechanism (5). The auxiliary mechanism (5) includes two arc-shaped frames (501). Both arc-shaped frames (501) are slidably connected to the upper surface of the chassis (1). The lower surfaces of the two arc-shaped frames (501) are rotatably connected to two rollers (502). The rollers (502) are slidably connected to the upper surface of the chassis (1). The inner wall of the arc-shaped frame (501) is slidably connected to three sliding rods (505). The end of each of the three sliding rods (505) away from the arc-shaped frame (501) is fixedly connected to a placement plate (506). The surface of each of the three sliding rods (505) is fitted with a spring (507). The two ends of the spring (507) are fixedly connected to the placement plate (506) and the arc-shaped frame (501) respectively. The upper surface of the placement plate (506) is glued with several anti-slip strips (508). The several anti-slip strips (508) are all made of rubber.

6. The high-precision mold centering device for a PTFE-lined pipe according to claim 5, characterized in that: The lower surface of the placement plate (506) is provided with a chamfered surface, and the size of the placement plate (506) is adapted to the inner wall size of the arc frame (501).

7. A high-precision mold alignment device for a PTFE-lined pipe according to claim 5, characterized in that: The surface of the arc-shaped frame (501) is fixedly connected with a Velcro female (503) and a Velcro female (504).

Images