Plastic pipe clamping device

Abstract

The utility model relates to a plastic pipe clamping device, which comprises a fixed seat, a fixed clamp, a caliber conversion adjusting ring and a dovetail strip, the fixed clamp is detachably buckled on the fixed seat, the top of the fixed seat and the bottom of the fixed clamp are respectively provided with a plastic pipe clamping opening, the inner side wall of the plastic pipe clamping opening is an arc surface and is provided with a dovetail groove, and the dovetail strip is provided with a dovetail groove. The two dovetail grooves are formed in the two sides of the plastic pipe clamping opening. The caliber conversion adjusting ring comprises an upper adjusting ring and a lower adjusting ring, the upper adjusting ring and the lower adjusting ring are attached to the inner side walls of plastic pipe clamping openings of the fixing clamp and the fixing base respectively, the upper adjusting ring and the lower adjusting ring are both in an arc plate shape, and corresponding dovetail grooves are formed in the upper end face and the lower end face of the upper adjusting ring and the lower adjusting ring respectively. The upper adjusting rings and the lower adjusting rings are nested and stacked together, and the inner diameter specifications are gradually reduced; dovetail strips are arranged in dovetail grooves between the fixing seat and the caliber conversion adjusting ring, between the fixing clamp and the caliber conversion adjusting ring and between the caliber conversion adjusting ring, and the dovetail strips are double dovetail strips. Therefore, installation is reliable and dismounting is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic pipe processing, in particular to a plastic pipe clamping device. Background Art

[0002] When existing plastic pipes are subjected to secondary processing, it is necessary to first clamp and fix the plastic pipes with a plastic pipe clamping device, and then perform secondary processing. In the plastic pipe clamping device, upper and lower chucks are respectively provided with clamping mouths. One end of the upper and lower chucks is connected by a hinge, and the other end is connected by a bolt. By rotating the bolt, the distance between the upper and lower chucks can be compressed, and thus the plastic pipe can be clamped in the clamping mouth between the upper and lower chucks. In order to adapt to different plastic pipe sizes, caliber conversion chucks are respectively installed in the clamping mouths of the upper and lower chucks to convert the size of the clamping mouth. However, the caliber conversion chucks of traditional plastic pipe chucks are simply stuck in the clamping mouths, and the caliber conversion chucks are prone to falling off during the working process, which is inconvenient to use. In addition, thick caliber conversion chucks require a large amount of manufacturing materials, resulting in high costs. For example, the chuck of a plastic pipe clamping device with the publication number CN206306662U includes a sliding table, a caliber conversion chuck and a chuck fixing screw; guiding rod socket holes are respectively arranged at both ends of the upper sliding table and both ends of the lower sliding table; plastic pipe clamping mouths are respectively arranged at the bottom of the upper sliding table and the top of the lower sliding table; the upper chuck fits on the inner side wall of the plastic pipe clamping mouth at the bottom of the upper sliding table, and the lower chuck fits on the inner side wall of the plastic pipe clamping mouth at the bottom of the lower sliding table; both the upper chuck and the lower chuck are provided with screw rod through holes corresponding to the chuck fixing screws and screw head receiving ports; the head and the screw rod of the chuck fixing screw are respectively arranged in the screw head receiving port and the screw rod through hole of the caliber conversion chuck, and the end of the screw is threadedly connected to the threaded hole in the caliber conversion chuck. The chuck of this plastic pipe clamping device adopts multiple chucks in layers, which is suitable for the installation of plastic pipes of different sizes. However, the chucks are fixed by screws, and when replacing, all need to be removed and then fixed with screws, and the operation is relatively cumbersome, affecting the operation efficiency.

[0003] Therefore, it is necessary to develop a plastic pipe clamping device for the above-mentioned defects. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a plastic pipe clamping device, which can quickly adjust according to the size of the plastic pipe through a dovetail bar clamping interface caliber conversion adjustment ring, and has a high conversion efficiency.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A plastic pipe clamping device of the utility model includes a fixed seat, a fixed clamp, a caliber conversion adjustment ring and a dovetail bar. The fixed clamp is detachably buckled on the fixed seat. Plastic pipe clamping openings are respectively arranged at the top of the fixed seat and the bottom of the fixed clamp. The inner side wall of the plastic pipe clamping opening is an arc surface and is provided with dovetail grooves. The two dovetail grooves are arranged on both sides of the plastic pipe clamping opening to ensure the stability of installation.

[0007] The caliber conversion adjustment ring includes an upper adjustment ring and a lower adjustment ring. The upper adjustment ring fits on the inner side wall of the plastic pipe clamping opening at the bottom of the fixed clamp, and the lower adjustment ring fits on the inner side wall of the plastic pipe clamping opening at the bottom of the fixed seat. Both the upper adjustment ring and the lower adjustment ring are in the shape of arc plates, and corresponding dovetail grooves are arranged at both the upper and lower end faces. The number of upper adjustment rings is multiple and they are nested and stacked together, with the inner diameter specifications gradually decreasing. The number of lower adjustment rings is multiple and they are nested and stacked together, with the inner diameter specifications gradually decreasing.

[0008] Dovetail bars are installed in the dovetail grooves between the fixed seat and the caliber conversion adjustment ring, between the fixed clamp and the caliber conversion adjustment ring, and between the caliber conversion adjustment rings. The dovetail bars are double dovetail bars, which is convenient for installation and disassembly.

[0009] Preferably, it further includes a long pin shaft and a split pin. Through holes adapted to the long pin shaft are arranged on the fixed seat and the fixed clamp. The caliber conversion adjustment rings are respectively provided with receiving openings corresponding to the through holes of the long pin shaft and the step head of the long pin shaft. The long pin shaft is installed between the lower adjustment ring and the fixed seat and between the upper adjustment ring and the fixed clamp. A round hole is provided at the extending end of the long pin shaft, and a split pin is installed in the round hole. The split pin is respectively clamped at the upper end of the fixed clamp and the lower end of the fixed seat.

[0010] Preferably, a plurality of round holes are provided on the long pin shaft, and the distance between the round holes is the thickness of the caliber conversion adjustment ring.

[0011] Preferably, the caliber conversion adjustment rings are respectively provided with a plurality of adjustment ring layers corresponding to different plastic pipe sizes. Each adjustment ring layer is provided with a receiving opening corresponding to the through hole of the long pin shaft and the step head of the long pin shaft. A plurality of grooves are provided at the upper and lower end faces of the adjustment ring layer to reduce the weight of the adjustment ring.

[0012] Preferably, a first connecting rod and a second connecting rod are arranged at one end of the fixed seat and the fixed clamp. The first connecting rod is rotatably connected to the fixed seat, the first connecting rod and the second connecting rod are rotatably connected, and the second connecting rod and the fixed clamp are rotatably connected, so that the fixed clamp can be directly rotated around the first connecting rod and the second connecting rod. An opening groove is arranged at the other end of the fixed seat and the fixed clamp, and a bolt and a nut are installed in the opening groove. By loosening the nut, the bolt and the nut can be removed.

[0013] Preferably, one end of the fixed clamp is provided with a handle which is arranged inside the bolt, facilitating the opening of the upper fixed clamp.

[0014] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0015] In the plastic pipe clamping device of the present utility model, the caliber conversion adjustment ring is fixed in the plastic pipe clamping openings of the fixed seat and the fixed clamp through the dovetail bar and the long pin shaft. The caliber conversion adjustment ring is more firmly connected to the fixed seat and the fixed clamp, which can reduce the detachment of the caliber conversion adjustment ring during use and is more convenient to use. The caliber conversion adjustment ring is also provided with a receiving opening for the stepped head of the long pin shaft, which can accommodate the stepped head of the long pin shaft inside the inner side wall of the clamping opening of the caliber conversion adjustment ring, reducing the extrusion damage to the plastic pipe caused by the stepped head of the long pin shaft when clamping the plastic pipe. The caliber conversion adjustment ring is provided with a plurality of adjustment ring layers, and the size of the plastic pipe clamping opening can be adjusted by increasing or decreasing the layers to adapt to clamping plastic pipes of different specifications. A number of grooves are provided on the caliber conversion adjustment ring, which can reduce the weight of the adjustment ring, making it more labor-saving to open and close the fixed clamp. Description of the Drawings

[0016] The present utility model will be further described below in conjunction with the drawings.

[0017] Figure 1 is a schematic three-dimensional structure diagram of the plastic pipe clamping device of the present utility model;

[0018] Figure 2 is an exploded view of the fixed clamp and the upper adjustment ring of the present utility model.

[0019] Description of the reference numerals: 1, fixed seat; 2, fixed clamp; 201, handle; 3, caliber conversion adjustment ring; 301, upper adjustment ring; 302, lower adjustment ring; 303, through hole; 304, receiving opening; 4, dovetail bar; 5, long pin shaft; 501, round hole; 6, split pin; 7, first connecting rod; 8, second connecting rod. Detailed Embodiments

[0020] The core of the present utility model is to provide a plastic pipe clamping device, which adds dovetail bar clamping and is convenient to adjust according to the size of the plastic pipe, suitable for use with plastic pipes of multiple specifications.

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0023] In a specific embodiment, as Figures 1 to 2 shown, a plastic pipe clamping device, a plastic pipe clamping device of the present utility model, includes a fixed seat 1, a fixed clamp 2, a caliber conversion adjustment ring 3, a dovetail bar 4, a long pin shaft 5 and a split pin 6. The fixed clamp 2 is detachably buckled on the fixed seat 1. Plastic pipe clamping mouths are respectively provided at the top of the fixed seat 1 and the bottom of the fixed clamp 2. The inner side walls of the plastic pipe clamping mouths are arc surfaces and are provided with dovetail grooves. The two dovetail grooves are arranged on both sides of the plastic pipe clamping mouths. Through holes 303 adapted to the long pin shaft 5 are provided on the fixed seat 1 and the fixed clamp 2.

[0024] In a specific embodiment, as Figures 1 to 2 shown, the caliber conversion adjustment ring 3 includes an upper adjustment ring 301 and a lower adjustment ring 302; the upper adjustment ring 301 fits on the inner side wall of the plastic pipe clamping mouth at the bottom of the fixed clamp 2, and the lower adjustment ring 302 fits on the inner side wall of the plastic pipe clamping mouth at the bottom of the fixed seat 1. Both the upper adjustment ring 301 and the lower adjustment ring 302 are in the shape of arc plates and corresponding dovetail grooves are provided at both the upper and lower end faces. The number of the upper adjustment rings 301 is multiple and they are nested and stacked together, and the inner diameter specifications gradually decrease. The number of the lower adjustment rings 302 is multiple and they are nested and stacked together, and the inner diameter specifications gradually decrease. Dovetail bars 4 are installed in the dovetail grooves between the fixed seat 1 and the caliber conversion adjustment ring 3, between the fixed clamp 2 and the caliber conversion adjustment ring 3, and between the caliber conversion adjustment rings 3, which facilitates installation and disassembly.

[0025] Specifically, the caliber conversion adjustment ring 3 is provided with multiple adjustment ring layers corresponding to different plastic pipe sizes. Each adjustment ring layer is provided with a receiving port 304 corresponding to the through hole 303 of the long pin shaft 5 and the step head of the long pin shaft 5. A number of grooves are provided at the upper and lower end faces of the adjustment ring layer to reduce the weight of the adjustment ring.

[0026] In a specific embodiment, as Figures 1 to 2 shown, a first connecting rod 7 and a second connecting rod 8 are provided at one end of the fixed seat 1 and the fixed clamp 2. The first connecting rod 7 is rotatably connected to the fixed seat 1, the first connecting rod 7 and the second connecting rod 8 are rotatably connected, and the second connecting rod 8 and the fixed clamp 2 are rotatably connected, directly rotating the fixed clamp 2 around the first connecting rod 7 and the second connecting rod 8; an opening groove is provided at the other end of the fixed seat 1 and the fixed clamp 2, and a bolt and a nut are installed in the opening groove. By loosening the nut, the bolt and the nut can be removed.

[0027] In a specific embodiment, as Figures 1 to 2 shown, one end of the fixed clamp 2 is provided with a handle 201, and the handle 201 is arranged inside the bolt. This facilitates opening the upper fixed clamp 2.

[0028] The operation process of the plastic pipe clamping device of the present utility model: According to the diameter of the plastic pipe, select the caliber conversion adjustment ring 3 installed in the fixed seat 1 and the fixed clamp 2. Use the dovetail bar 4 to snap the dovetail grooves of the fixed seat 1 and the caliber conversion adjustment ring 3 together. If the diameter of the plastic pipe is relatively small, select multiple specifications of caliber conversion adjustment rings 3, and the caliber conversion adjustment rings 3 are also snapped together with the dovetail bar 4. In this way, the positioning is accurate and the installation is convenient. After installation, then pass the long pin shaft 5 through the through holes 303 of each caliber conversion adjustment ring 3, so that the front end of the long pin shaft 5 extends out of the fixed seat 1 and the fixed clamp 2 respectively. Then pass the split pin 6 through the round hole 501 at the extending end of the long pin shaft 5 to fix the long pin shaft 5. The stepped head of the long pin shaft 5 is installed in the receiving port 304 of the caliber conversion adjustment ring 3 and will not protrude from the original arc surface inside the caliber conversion adjustment ring 3, avoiding the extrusion damage of the stepped head of the long pin shaft 5 to the plastic pipe when clamping the plastic pipe. After installing the caliber conversion adjustment ring 3, place the plastic pipe at one end of the fixed seat 1, hold the handle 201 on one side of the fixed clamp 2, flip the fixed clamp 2 to the upper end of the fixed seat 1, place the bolt and nut on the upper and lower sides of the open slots on one side of the fixed seat 1 and the fixed clamp 2 respectively, and tighten the nut to clamp the plastic pipe between the fixed seat 1 and the fixed clamp 2. Loosen the nut, and the bolt and nut can be removed from the open slot. Hold the handle 201 and open one side of the fixed clamp 2 to remove the plastic pipe, and then continue to install the next one. If the diameter of the plastic pipe is relatively large, open one side of the fixed clamp 2, flip and place it, remove the split pin 6, and draw out the long pin shaft 5. It is necessary to remove the corresponding caliber conversion adjustment rings 3 inside the fixed seat 1 and the fixed clamp 2 at the same time. Directly remove the dovetail bar 4 snapped between the caliber conversion adjustment rings 3, and then place the long pin shaft 5 into the through hole 303 of the caliber conversion adjustment ring 3, so that the stepped head of the long pin shaft 5 is placed in the receiving port 304 of the caliber conversion adjustment ring 3, and use the split pin 6 to snap into the corresponding round hole 501 on the long pin shaft 5. This adjustment is convenient.

[0029] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the relevant parts, reference can be made to the description in the method part.

[0030] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A plastic pipe clamping device, characterized in that: It comprises a fixing seat (1), a fixing clamp (2), a caliber conversion adjustment ring (3) and a dovetail strip (4); the fixing clamp (2) is detachably buckled on the fixing seat (1); the top of the fixing seat (1) and the bottom of the fixing clamp (2) are respectively provided with plastic pipe clamping openings; the inner side wall of the plastic pipe clamping opening is an arc surface and is provided with a dovetail groove; two dovetail grooves are provided on both sides of the plastic pipe clamping opening; The caliber conversion adjustment ring (3) comprises an upper adjustment ring (301) and a lower adjustment ring (302); the upper adjustment ring (301) is fitted to the inner side wall of the plastic pipe clamp of the fixing clamp (2), and the lower adjustment ring (302) is fitted to the inner side wall of the plastic pipe clamp of the fixing seat (1); the upper adjustment ring (301) and the lower adjustment ring (302) are both in the shape of circular arc plates and are provided with corresponding dovetail grooves at both upper and lower end surfaces; the upper adjustment rings (301) are multiple and are nested and stacked together, and the inner diameter specifications are gradually reduced; the lower adjustment rings (302) are multiple and are nested and stacked together, and the inner diameter specifications are gradually reduced; The dovetail strip (4) is installed in the dovetail grooves between the fixing seat (1) and the caliber conversion adjustment ring (3), the fixing clamp (2) and the caliber conversion adjustment ring (3), and the dovetail strip (4) is a double dovetail strip.

2. The plastic pipe clamping device according to claim 1, characterized in that: The invention also comprises a long pin shaft (5) and a split pin (6); the fixing seat (1) and the fixing clamp (2) are provided with a through hole (303) matched with the long pin shaft (5); the caliber conversion adjustment ring (3) is provided with a receiving opening (304) corresponding to the through hole (303) of the long pin shaft (5) and the step head of the long pin shaft (5); the long pin shaft (5) is installed between the lower adjustment ring (302) and the fixing seat (1) and between the upper adjustment ring (301) and the fixing clamp (2); a circular hole (501) is provided at the protruding end of the long pin shaft (5); a split pin (6) is installed in the circular hole (501); the split pin (6) is clamped at the upper end of the fixing clamp (2) and the lower end of the fixing seat (1).

3. The plastic pipe clamping device according to claim 2, characterized in that: The long pin shaft (5) is provided with a plurality of circular holes (501), and the distance between the circular holes (501) is equal to the thickness of the caliber conversion adjustment ring (3).

4. The plastic pipe clamping device according to claim 2, characterized in that: The caliber conversion adjustment ring (3) is provided with a plurality of adjustment ring layers corresponding to different plastic pipe sizes, each of the adjustment ring layers is provided with a receiving opening (304) corresponding to the through hole (303) of the long pin shaft (5) and the step head of the long pin shaft (5), and the upper and lower end surfaces of the adjustment ring layers are provided with a plurality of grooves.

5. The plastic pipe clamping device according to claim 1, characterized in that: A first connecting rod (7) and a second connecting rod (8) are provided at one end of the fixing seat (1) and the fixing clamp (2); the first connecting rod (7) is rotatably connected to the fixing seat (1); the first connecting rod (7) and the second connecting rod (8) are rotatably connected to each other; the second connecting rod (8) and the fixing clamp (2) are rotatably connected; and an open groove is provided at the other end of the fixing seat (1) and the fixing clamp (2); a bolt and a nut are installed in the open groove.

6. The plastic pipe clamping device according to claim 5, characterized in that: A handle (201) is provided at one end of the fixing pliers (2), and the handle (201) is arranged on the inner side of the bolt.

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