Small-pipe-diameter plastic pipe traction equipment

Abstract

The utility model discloses small-pipe-diameter plastic pipe traction equipment, and relates to the technical field of pipe production equipment. A guide rod and a lead screw are installed on the machine frame, the upper end of the lead screw is connected with a variable-diameter driving motor, an upper traction claw and a lower traction claw are connected to the guide rod in a sliding mode, chain wheels are installed at the two ends in two long plates respectively, the chain wheels at the two ends are connected through a chain, and a plurality of rubber blocks are fixed to the chain. The chain wheel shaft at the other end is mounted in the adjusting groove of the long plate; the centering devices are installed at the two ends of the traction claw respectively, the end of the adjusting screw rod and the end of the sliding rod are fixed to the installation plate, the two movable seats are connected to the adjusting screw rod in a screwed mode respectively and connected with the sliding rod in a sliding mode, and the centering rollers are fixed to the two movable seats respectively. The device can be applied to the continuous production and manufacturing process of the small-pipe-diameter plastic pipe, the pipe does not need to be machined, the end of the manufactured pipe does not need to be trimmed, only the small-pipe-diameter pipe is dragged to move, and the structure is simple.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe production equipment, specifically to a small-diameter plastic pipe traction device. Background Technology

[0002] The existing plastic pipe manufacturing process can be briefly described as follows: core tube plastic extrusion → core tube blank formed by core tube mold → vacuum sizing and cooling into plastic pipe → traction → cutting → winding / or straight pipe stacking.

[0003] In the above basic processes, ordinary traction machines typically have multiple traction claws evenly arranged in a circumferential direction. However, in the manufacturing process of small-diameter plastic pipes, ordinary traction machines cannot properly traction pipes with diameters below a certain value, as they are prone to loosening. Furthermore, ordinary traction machines have complex designs and require relatively large traction forces. Modifying an ordinary traction machine into a dedicated traction machine for small-diameter plastic pipes is both costly and carries the risk of breakage. Therefore, those skilled in the art have provided a small-diameter plastic pipe traction device to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this invention is to provide a small-diameter plastic pipe traction device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a frame, a guide rod, a lead screw, traction claws, a centering device, an automatic tensioning spring, a traction drive motor, and a variable diameter drive motor; the guide rod and the lead screw are installed on the frame, the upper end of the lead screw is connected to the variable diameter drive motor, and two traction claws are slidably connected to the guide rod. Each traction claw includes a long plate, a chain, and a rubber block. The two long plates are arranged side by side, one of which is screwed to the lead screw. Sprockets are installed at both ends of the two long plates, and the sprockets at both ends are connected by a chain. The chain is connected with several rubber blocks fixed on it. The traction drive motor is connected to the sprocket at one end, and the sprocket shaft at the other end is installed in the adjustment groove of the long plate. An automatic tension spring is installed on the sprocket shaft. Centering devices are installed at both ends of the traction claw. The centering device includes a centering roller, a mounting plate, a movable seat, an adjusting screw, and a sliding rod. The ends of the adjusting screw and the sliding rod are fixed on the mounting plate. Two movable seats are screwed onto the adjusting screw and slidably connected to the sliding rod. Centering rollers are fixed on the two movable seats respectively.

[0006] Furthermore, a hand crank is connected to the end of the adjusting screw.

[0007] Furthermore, the mounting plate is fixed to the end of the long plate.

[0008] Furthermore, the lower end of the lead screw is mounted and connected to the frame via a thrust ball bearing and a deep groove ball bearing.

[0009] The beneficial effects of this utility model after adopting the above structure are as follows:

[0010] 1. It can be applied in the continuous production process of small-diameter plastic pipes. There is no need to process the pipes or trim the ends of the finished pipes. It only pulls the small-diameter pipes to move, and the structure is simple.

[0011] 2. Compared with ordinary traction machines, this utility model has a simple design, small footprint, low cost, moderate traction force that will not break or loosen, and is more suitable for production lines of small diameter pipes.

[0012] 3. By setting lead screws and guide posts, the spacing between pressure rollers can be quickly adjusted according to the size of the pipe being processed;

[0013] 4. By setting an automatic tension spring, it can work for a long time without replacing the chain, reducing costs. Attached Figure Description

[0014] Figure 1 This is the main view structural diagram of this utility model;

[0015] Figure 2 yes Figure 1 The left view;

[0016] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0017] Explanation of reference numerals in the attached figures:

[0018] Frame 1, guide rod 2, lead screw 3, traction claw 4, long plate 41, chain 42, rubber block 43, adjusting groove 44, centering device 5, centering roller 51, mounting plate 52, moving seat 53, adjusting screw 54, slide bar 55, hand crank handle 56, automatic tensioning spring 6, traction drive motor 7, variable diameter drive motor 8. Detailed Implementation

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] See as Figure 1 —— Figure 3As shown, this specific embodiment adopts the following technical solution: It includes a frame 1, a guide rod 2, a lead screw 3, a traction claw 4, a centering device 5, an automatic tensioning spring 6, a traction drive motor 7, and a variable diameter drive motor 8; the guide rod 2 and the lead screw 3 are installed on the frame 1. The lower end of the lead screw 3 is connected to the frame 1 through a thrust ball bearing and a deep groove ball bearing. The thrust ball bearing supports the lead screw 3 perpendicular to the frame 2, and the deep groove ball bearing allows the lead screw 3 to rotate relative to the frame 2. The upper end of the lead screw 3 is connected to the variable diameter drive motor 8. Two traction claws 4 are slidably connected to the guide rod 2. The traction claw 4 includes a long plate 41, a chain 42, and a rubber block 43. The two long plates 41 are arranged side by side, and one of the long plates 41 is screwed to the lead screw 3. Sprockets are installed at both ends of the two long plates 41, and the two sprockets are connected by the chain 42. Several... The dry adhesive block 43 is driven by a sprocket connected to one end of the traction drive motor 7. The sprocket shaft at the other end is installed in the adjustment groove 44 of the long plate 41. An automatic tension spring 6 is installed on the sprocket shaft. The traction drive motor 7 drives the sprocket to rotate, thereby moving the adhesive block 43 on the chain 42. The traction drive motors 7 on the two traction claws 4 rotate in opposite directions, so that the adhesive block 43 in contact with the pipe moves in the same direction, thereby tractioning the pipe. The variable diameter drive motor 8 drives the lead screw 3 to rotate, thereby moving the traction claw 4 up and down along the guide rod 2, thereby adjusting the distance between the two traction claws 4 to achieve traction of pipes of different specifications. When the chain 42 wears and becomes longer, the sprocket shaft moves along the adjustment groove 44 under the action of the automatic tension spring 6, thereby increasing the distance between the two sprocket shafts and achieving the effect of tensioning the chain 42.

[0021] The traction claw 4 has a centering device 5 installed at both ends. The centering device 5 includes a centering roller 51, a mounting plate 52, a movable seat 53, an adjusting screw 54, and a sliding rod 55. The ends of the adjusting screw 54 and the sliding rod 55 are fixed on the mounting plate 52. The two movable seats 53 are respectively screwed onto the adjusting screw 54 and slidably connected to the sliding rod 55. The centering roller 51 is fixed on the two movable seats 53. The end of the adjusting screw 54 is connected to a hand crank 56. The mounting plate 52 is fixed to the end of the long plate 41. By rotating the hand crank 56, the movable seat 53 moves along the sliding rod 55. Adjusting the distance between the two centering rollers 51 can position the pipe between the two centering rollers 51, so that the center of the pipe is located in the center of the traction claw 4, preventing tilting traction.

[0022] The working principle of this utility model is as follows: the pipe is placed between the centering rollers 51 at both ends. First, the distance between the two traction claws 4 is adjusted by the variable diameter drive motor 8 to make it conform to the pipe specifications. Then, the traction drive motor 7 is turned on to make the rubber blocks 43 of the upper and lower traction claws 4 move along the chain 42. The friction between the rubber blocks 43 and the pipe drives the pipe to move along the chain 42, thereby achieving the purpose of traction of the pipe.

[0023] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A small-diameter plastic pipe pulling apparatus characterized by: It contains frame, guide rod, screw rod, traction claw, centering device, automatic tension spring, traction drive motor and variable diameter drive motor; the frame is installed with guide rod and screw rod, the upper end of the screw rod is connected with the variable diameter drive motor, the guide rod is slidably connected with two traction claws, the traction claw contains long plate, chain and rubber block, two long plates are arranged side by side, one of the long plates is screwed with the screw rod, two chain wheels are installed at the two ends of the two long plates respectively, the two chain wheels are connected through the chain, a plurality of rubber blocks are fixed on the chain, the traction drive motor is drivingly connected with the chain wheel at one end, the chain wheel shaft at the other end is installed in the adjusting groove of the long plate, and the automatic tension spring is installed on the chain wheel shaft; the two ends of the traction claw are respectively installed with centering devices, the centering device contains centering roller, mounting plate, moving seat, adjusting screw and slide rod; the end of the adjusting screw and the slide rod is fixed on the mounting plate, two moving seats are screwed on the adjusting screw respectively and are slidably connected with the slide rod, and the two moving seats are respectively fixed with centering rollers.

2. A small-diameter plastic pipe pulling apparatus according to claim 1, characterized by: The end of the adjusting screw is connected with a hand crank.

3. A small-diameter plastic pipe pulling apparatus according to claim 1, characterized by: The mounting plate is fixed on the end of the long plate.

4. A small-diameter plastic pipe pulling apparatus according to claim 1, characterized by: The lower end of the screw rod is connected with the frame through the thrust ball bearing and the deep groove ball bearing.

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