Clamping assembly for polyethylene pipe production

Abstract

The utility model relates to polypropylene pipe material technical field discloses a clamping assembly for polyethylene pipe production, including platform, still include: set up the driving seat above the platform, the driving seat is provided with two groups, when the pipe material after water cooling enters the inside of caterpillar -type tractor, first the side of the convex point will contact with the pipe material, the gas in the inside of convex point will spray outward from the injection hole after extrusion, can make the gas directly opposite pipe material injection, to blow off and clean the water liquid of the subsequent contact site of convex point and pipe material surface, when the convex point completely contacts with pipe material surface, the adsorption hole above the convex point cooperates with flexible cover and can be sealed with pipe material surface, after the gas in the inside of convex point extrudes, the elastic skeleton will make the convex point outward expansion reset can make the inside of convex point be in the negative pressure state, and then cooperate with adsorption hole can carry out adsorption to pipe material surface, improve the traction, prevent the appearance of the slipping phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of polypropylene pipe technology, specifically a clamping component for polyethylene pipe production. Background Technology

[0002] In the production of polyethylene pipes, the tracked traction machine is a key forming auxiliary equipment. It clamps and pulls the extruded pipe through the raised structure on the track surface to ensure stable conveying speed and dimensional accuracy.

[0003] Currently, the track protrusions of traction machines are made of hard rubber. Although the structure is simple and easy to manufacture, there are many drawbacks in practical applications: First, the contact between the hard protrusions and the surface of the newly formed pipe is prone to local stress concentration, which can cause indentations, scratches or even micro-cracks on the outer wall of the PE pipe, affecting the appearance quality of the product. Second, since the pipe is generally cooled by water during the forming process, the surface is prone to reduced friction with the protrusions due to residual water. Therefore, in some high-speed clamping and traction operations, slippage and unstable traction are likely to occur. Utility Model Content

[0004] The purpose of this invention is to provide a clamping assembly for polyethylene pipe production to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping assembly for polyethylene pipe production, comprising a platform, and further comprising: The drive seat is located above the platform. There are two sets of drive seats. A drive mechanism located above the platform is provided between the rear of the two sets of drive seats to control the distance between them. The surface of the drive seat is provided with tracks. An anti-slip component is disposed on the track surface; wherein the anti-slip component includes protrusions disposed on the track surface, the protrusions are hollow, and the sides of the protrusions are provided with spray holes facing the end of the pipe.

[0006] Preferably, the anti-slip component further includes a skeleton disposed within the hollow portion of the protrusion, the skeleton having a U-shaped design, and the skeleton being fitted to the inner wall of the protrusion as a whole.

[0007] Preferably, an air inlet coaxial with the injection hole is provided on one side of the inner wall of the protrusion, and the other end of the air inlet is connected to an air storage groove provided inside the protrusion, and the air storage groove is connected to the injection hole.

[0008] Preferably, both sides of the frame are provided with hollowed-out portions that are on the same axis as the air inlet.

[0009] Preferably, the entire material of the protrusion is rubber, and a transverse weakening groove is provided below the protrusion to change the curvature of the protrusion.

[0010] Preferably, an adapter groove is provided above the protrusion, the adapter groove is curved, and an adsorption hole communicating with the hollow part is provided on the inner wall of the adapter groove of the protrusion.

[0011] Preferably, the inner wall of the adapter groove is integrally connected with a flexible cover disposed around the adsorption hole, the flexible cover being used to enhance the adsorption effect between the adsorption hole and the pipe surface.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: When the water-cooled pipe enters the tracked traction machine, the side of the protrusion will first contact the pipe. After the protrusion is squeezed, the gas inside will be ejected outward from the injection hole, so that the gas can be sprayed directly onto the pipe to blow away and clean the water at the subsequent contact points between the protrusion and the pipe surface. When the protrusion is in full contact with the pipe surface, the adsorption hole above the protrusion, together with the flexible cover, can seal and fit the pipe surface. After the gas inside the protrusion is squeezed out, the elastic skeleton expands and resets the protrusion, which can put the inside of the protrusion into a negative pressure state. Then, together with the adsorption hole, it can adsorb the pipe surface, improve the traction force, and prevent slippage. Attached Figure Description

[0013] Figure 1 A three-dimensional structural schematic diagram of the clamping assembly for polyethylene pipe production provided by this utility model; Figure 2 A schematic diagram of the drive structure provided by this utility model; Figure 3 A schematic diagram showing the disassembled structure of the track and anti-slip components provided by this utility model; Figure 4 A schematic diagram of the internal structure of the protrusions in the anti-slip component provided by this utility model; Figure 5 A schematic diagram of the internal side view of the protrusion provided by this utility model.

[0014] In the diagram: 1. Platform; 2. Drive base; 3. Drive mechanism; 4. Track; 5. Anti-slip component; 501. Protrusion; 502. Injection hole; 503. Frame; 504. Flexible cover; 505. Lateral weakening groove; 506. Air storage tank; 507. Air port. Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0016] Please see Figure 1-5 As shown, a clamping assembly for polyethylene pipe production includes a platform 1, and further includes: The drive seat 2 is located above the platform 1. There are two sets of drive seats 2. A drive mechanism 3 is located above the platform 1 and is used to control the distance between the two sets of drive seats 2. The surface of the drive seat 2 is provided with a track 4. Anti-slip component 5 is disposed on the surface of track 4; Polypropylene pipes are typically produced using an extrusion molding process. The production steps are as follows: First, the raw material is fed into the extruder hopper through an automatic feeding system. The raw material is heated and plasticized in a single-screw or twin-screw extruder. It is then melted into a uniform melt by the screw shearing and heating. The melt passes through a filter screen and enters the die. The melt is extruded through an annular die to form a tubular preform. Subsequently, the extruded pipe enters a water cooling system. After cooling, the pipe is guided into a traction machine for clamping and traction. The aforementioned drive mechanism 3 serves as the spacing adjustment mechanism for the two sets of drive seats 2. It is located above the platform 1 and can not only ensure the stability of the two sets of track 4 supports, but also, by using its built-in ball screw in conjunction with the handwheel, can drive the track 4 supports to move linearly when rotating, thereby adjusting the spacing between the two sets of tracks 4. It should be noted that the outer diameter of the cooled PP pipe will be slightly smaller than the mold opening due to shrinkage. The track 4 needs to generate sufficient frictional force to pull by slightly squeezing the surface of the pipe. Therefore, the spacing should be smaller than the outer diameter of the cooled pipe. Example: If the outer diameter of the pipe after cooling is 110mm, the track spacing can be set to 105-108mm; See Figure 3 , Figure 4 and Figure 5 As shown, the anti-slip component 5 includes a protrusion 501 disposed on the surface of the track 4. The protrusion 501 is hollow and has a spray hole 502 on its side facing the end of the tube. The anti-slip component 5 also includes a skeleton 503 disposed in the hollow part of the protrusion 501. The skeleton 503 is U-shaped and fits the inner wall of the protrusion 501. An air port 507 is disposed on one side of the inner wall of the protrusion 501 and is coaxial with the spray hole 502. The other end of the air port 507 is connected to an air storage groove 506 disposed inside the protrusion 501. The air storage groove 506 is connected to the spray hole 502. After the polypropylene pipe is cooled by water, the personnel will guide the end of the pipe into the two sets of tracks 4 of the track 4 tractor. First, the end of the pipe will contact the side of the protrusion 501 that has been reciprocating through the arc-shaped deflector. The side of the protrusion 501 will deform as a whole after being squeezed by the pipe. At this time, the gas inside the protrusion 501 will be sprayed out onto the surface of the pipe through the injection hole 502, which can blow away the water in the part of the pipe that subsequently contacts the protrusion 501, thus achieving the effect of preventing slippage. Both sides of the frame 503 are provided with hollowed-out parts that are on the same axis as the air inlet 507; The hollowed-out part designed above can provide deformation space for the skeleton 503, and will not interfere with the path of gas flowing from the hollow part of the protrusion 501 to the air port 507. See Figure 4 As shown, the entire material of the protrusion 501 is rubber, and a transverse weakening groove 505 is provided below the protrusion 501. The transverse weakening groove 505 is used to change the curvature of the protrusion 501. It should be noted that: such as Figure 4 As shown, multiple transverse weakening grooves 505 are provided below the protrusion 501, dividing the lower part of the protrusion 501 into multiple segments. However, only the middle segment is actually connected to the track 4. Since the tube is cylindrical, when the two sets of tracks 4 wrap around the tube, the pressure of the drive mechanism 3 will cause the track 4 to deform. In turn, the multiple transverse weakening grooves 505 can change the curvature of the protrusion 501, so that the fitting groove above it can fit more closely to the surface of the tube, improving the contact effect between the protrusion 501 and the tube. See Figure 4 As shown, an adapter groove is provided above the protrusion 501. The adapter groove is curved. An adsorption hole communicating with the hollow part is provided on the inner wall of the adapter groove of the protrusion 501. A flexible cover 504 is integrally connected to the inner wall of the adapter groove and is provided around the adsorption hole. The flexible cover 504 is used to enhance the adsorption effect between the adsorption hole and the surface of the pipe. When the protrusion 501 comes into contact with the pipe, it will be compressed by the pressure. The injection hole 502 on the side of the protrusion 501 has a built-in one-way valve, so it is a one-way port. After the protrusion 501 changes to a horizontal state, the pressure from the pipe will be reduced. At this time, the elastic skeleton 503 will drive the protrusion 501 to expand and reset. The adsorption hole of the protrusion 501 is in contact with the surface of the pipe. Therefore, when the protrusion 501 resets, its hollow part will be in a negative pressure state. Thus, the adsorption hole can be used to form an adsorption effect between the protrusion 501 and the pipe, which can effectively improve the clamping and traction effect. Working principle: When the water-cooled pipe enters the interior of the tracked 4 traction machine, the side of the protrusion 501 will first contact the pipe. After being squeezed, the gas inside the protrusion 501 will be ejected outward from the injection hole 502, so that the gas can be sprayed directly onto the pipe to blow away and clean the water at the subsequent contact points between the protrusion 501 and the pipe surface. When the protrusion 501 is in complete contact with the pipe surface, the adsorption hole above the protrusion 501, together with the flexible cover 504, can seal and fit with the pipe surface. After the gas inside the protrusion 501 is squeezed out, the elastic frame 503 expands and resets the protrusion 501, so that the inside of the protrusion 501 is in a negative pressure state. Then, together with the adsorption hole, the pipe surface can be adsorbed, improving the traction force and preventing slippage.

[0017] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A clamping assembly for polyethylene pipe production, comprising a platform (1), characterized in that, Also includes: The drive seat (2) is set above the platform (1). There are two sets of drive seats (2). A drive mechanism (3) for controlling the distance between the two sets of drive seats (2) and located above the platform (1) is set between the rear of the two sets of drive seats (2). Tracks (4) are provided on the surface of the drive seat (2). Anti-slip component (5), the anti-slip component (5) is disposed on the surface of track (4); wherein, the anti-slip component (5) includes a protrusion (501) disposed on the surface of track (4), the protrusion (501) is hollow, and the side of the protrusion (501) is provided with a spray hole (502) facing the end of the pipe.

2. The clamping assembly for polyethylene pipe production according to claim 1, characterized in that: The anti-slip component (5) also includes a skeleton (503) disposed in the hollow part of the protrusion (501). The skeleton (503) is U-shaped and the skeleton (503) is in contact with the inner wall of the protrusion (501).

3. The clamping assembly for polyethylene pipe production according to claim 1, characterized in that: One side of the inner wall of the protrusion (501) is provided with an air port (507) that is on the same axis as the injection hole (502). The other end of the air port (507) is connected to an air storage groove (506) opened inside the protrusion (501). The air storage groove (506) is connected to the injection hole (502).

4. The clamping assembly for polyethylene pipe production according to claim 2, characterized in that: Both sides of the frame (503) are provided with hollowed-out parts that are on the same axis as the air inlet (507).

5. A clamping assembly for polyethylene pipe production according to claim 1, characterized in that: The entire material of the protrusion (501) is rubber, and a transverse weakening groove (505) is provided below the protrusion (501). The transverse weakening groove (505) is used to change the curvature of the protrusion (501).

6. A clamping assembly for polyethylene pipe production according to claim 1, characterized in that: An adapter groove is provided above the protrusion (501). The adapter groove is curved. An adsorption hole communicating with the hollow part is provided on the inner wall of the adapter groove of the protrusion (501).

7. A clamping assembly for polyethylene pipe production according to claim 6, characterized in that: The inner wall of the adapter groove is integrally connected with a flexible cover (504) disposed around the adsorption hole. The flexible cover (504) is used to enhance the adsorption effect between the adsorption hole and the surface of the pipe.

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