Connecting device for composite plastic pipes

Abstract

The utility model relates to the technical field of pipe processing, and particularly discloses a connecting device for a composite plastic pipe, which comprises a rack, a fixed clamping tile, a movable clamping tile, an oil cylinder, a milling cutter and a heating plate, the fixed clamping tile is fixedly arranged at the first end of the rack, the movable clamping tile is movably arranged on the rack along the axial direction of the fixed clamping tile, and the oil cylinder is arranged on the movable clamping tile. The oil cylinder is installed on the machine frame and used for driving the movable clamping tile to move, a first extrusion ring is movably installed on the fixed clamping tile in the axial direction of the fixed clamping tile, and a second extrusion ring is movably installed on the movable clamping tile in the axial direction of the movable clamping tile. A plurality of first arc-shaped inserting blocks and second arc-shaped inserting blocks are arranged on the opposite faces of the first extrusion ring and the second extrusion ring in a staggered mode, and a plurality of first arc-shaped inserting openings and second arc-shaped inserting openings are formed in the opposite faces of the first extrusion ring and the second extrusion ring in a staggered mode. According to the utility model, the butt joint edges of the two pipelines can form a water stop ring with a regular shape.

Description

Technical Field

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

[0002] In the prior art, hot-melt butt welding is used to connect composite plastic pipes such as PE pipes. A general hot-melt machine consists of a frame, a fixed tile, a movable tile, a milling cutter and a heating plate. The fixed tile is fixed on the frame, and the movable tile is movably installed on the frame along the axial direction of the fixed tile. Generally, an oil cylinder for driving the movable tile to move is also installed on the frame. When butt-joining pipes, the fixed tile clamps the first section of the pipe, and the movable tile clamps the second section of the pipe, so that the two pipes are aligned. After the opposite ends of the two pipes are milled with a milling cutter, the opposite ends of the two sections of the pipe are heated and softened with a heating plate, and then the heating plate is removed, and the movable tile moves toward the fixed tile, so that the softened ends of the two ends of the pipe are bonded together to complete the butt joint. After the butt joint is completed, an inner flange and an outer flange will be generated at the butt joint. The inner flange needs to be cut out to reduce the damping coefficient of the pipe, and the outer flange needs to be cut off to ensure beauty. However, it is found in actual application that the outer flange also serves as a water stop ring. In the patent document with the authorization announcement number CN208084998U, an improved PE pipe hot-melt butt joint machine is disclosed. The auxiliary clamping tile is movably installed on the inner clamping tile. When the pipes are butt-jointed, the two auxiliary clamping tiles are squeezed to form a water stop ring with uniform thickness on the outer flange of the pipe joint. However, there are still shortcomings in its structure, because the outer flange squeezed out by the two auxiliary clamping tiles is not necessarily in the shape of a circular ring, and the shape is likely to be irregular, which cannot guarantee the aesthetic requirements. Utility Model Content

[0003] In order to solve the problems mentioned in the background technology, the purpose of the utility model is to provide a connecting device for composite plastic pipes.

[0004] In order to achieve the above objectives, the technical solution of the utility model is:

[0005] A connecting device for composite plastic pipes, comprising a frame, a fixed clamping shoe, a movable clamping shoe, an oil cylinder, a milling cutter and a heating plate, wherein a fixed clamping shoe is fixedly installed at the first end of the frame, a movable clamping shoe is movably installed on the frame along the axial direction of the fixed clamping shoe, the oil cylinder is installed on the frame and is used to drive the movable clamping shoe to move, a plurality of first guide rods and a second guide rod are respectively inserted in the fixed clamping shoe and the movable clamping shoe along their own axial directions, a first extrusion ring is commonly connected to one end of the plurality of first guide rods close to the movable clamping shoe, a second extrusion ring is commonly connected to one end of the plurality of second guide rods close to the fixed clamping shoe, and the first extrusion ring is The pressure ring and the second extrusion ring are both coaxially arranged with the fixed clamping shoe. A plurality of first arc-shaped plugs are circumferentially arranged on the end surface of the first extrusion ring close to the second extrusion ring. A first arc-shaped socket is provided between each first arc-shaped plug. A second arc-shaped plug is provided on the end surface of the second extrusion ring close to the first extrusion ring corresponding to the first arc-shaped socket. A second arc-shaped socket is provided on the second extrusion ring corresponding to the first arc-shaped plug. Anti-slip nuts are connected to the opposite sides of the first guide rod and the second guide rod. Springs are provided between the first extrusion ring and the fixed clamping shoe and between the second extrusion ring and the movable clamping shoe.

[0006] Furthermore, the fixed clamping tile comprises a fixed inner clamping tile and a fixed outer clamping tile, the fixed inner clamping tile and the fixed outer clamping tile are arranged at intervals and fixed together through a first sleeve, and the first guide rod passes through the fixed inner clamping tile and the fixed outer clamping tile at the same time.

[0007] Furthermore, the movable clamping tile comprises a movable inner clamping tile and a movable outer clamping tile, the movable inner clamping tile and the movable outer clamping tile are arranged at intervals and fixed together through a second sleeve, and the second guide rod passes through the movable inner clamping tile and the movable outer clamping tile at the same time.

[0008] The beneficial effects of the utility model are as follows: the arrangement of the fixed shoe, the movable shoe, the frame and the oil cylinder is the same as that of the traditional hot-melt butt-jointing machine, and has the function of butt-jointing pipes; and when butt-joining pipes, when the first arc-shaped plug on the first extrusion ring is inserted into the second arc-shaped socket on the second extrusion ring, a plurality of first arc-shaped plugs and second arc-shaped plugs together form a closed pipe body, and the length of the pipe body will change with the spacing between the first extrusion ring and the second extrusion ring, so that the flanges at the original butt joint of the two pipes can be formed into a circular ring shape in the closed pipe body formed by the first arc-shaped plug and the second arc-shaped plug, thereby forming a water-stop ring with a regular shape, which not only improves the strength of the pipe butt joint, but also ensures the aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is an axonometric diagram of an embodiment of the utility model;

[0010] Figure 2 A cross-sectional view of an embodiment of the utility model;

[0011] Figure 3 It is a schematic diagram of the first extrusion ring and the second extrusion ring being connected to each other in an embodiment of the utility model.

[0012] Explanation of the accompanying figures: 1. Frame, 11. Guide column, 2. Cylinder, 3. First guide rod, 4. Second guide rod, 5. First extrusion ring, 51. First arc-shaped plug block, 52. First arc-shaped socket, 6. Second extrusion ring, 61. Second arc-shaped plug block, 62. Second arc-shaped socket, 7. Anti-slip nut, 8. Spring, 9. Fixed inner clamping tile, 10. Fixed outer clamping tile, 110. First sleeve, 120. Movable inner clamping tile, 130. Movable outer clamping tile, 140. Second sleeve. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the protection scope of the utility model.

[0014] like Figure 1-Figure 3 As shown, a connecting device for composite plastic pipes includes a frame 1, a fixed clamping shoe, a movable clamping shoe, a cylinder 2, a milling cutter (not shown) and a heating plate (not shown). Two guide columns 11 are horizontally arranged on the frame 1. The fixed clamping shoe and the movable clamping shoe are both installed on the guide column 11. The fixed clamping shoe is fixed to the first end of the guide column 11, and the movable clamping shoe is movably installed on the guide column 11. The fixed clamping shoe and the movable clamping shoe are coaxially arranged. The cylinder 2 is installed on the frame 1 to drive the movable clamping shoe to move. Two first guide rods 3 and second guide rods 4 are respectively movably penetrated in the fixed clamping shoe and the movable clamping shoe along their own axial direction. The two first guide rods 3 are connected to a first extrusion ring 5 at one end close to the movable clamping shoe, and the two second guide rods 4 are connected to a second extrusion ring 5 at one end close to the fixed clamping shoe. Ring 6, the first extrusion ring 5 and the second extrusion ring 6 are both coaxially arranged with the fixed clamping shoe, six first arc-shaped plugs 51 are circumferentially arranged on the end surface of the first extrusion ring 5 close to the second extrusion ring 6, the curvature of the first arc-shaped plugs 51 is 60°, and a first arc-shaped socket 52 is provided between each first arc-shaped plug 51 on the first extrusion ring 5, and the curvature of the first arc-shaped socket 52 is also 60°, a second arc-shaped plug 61 is provided on the end surface of the second extrusion ring 6 close to the first extrusion ring 5 corresponding to the first arc-shaped socket 52, and a second arc-shaped socket 62 is provided on the second extrusion ring 6 corresponding to the first arc-shaped plug 51, the first guide rod 3 and the second guide rod 4 are connected to the opposite sides with anti-slip nuts 7, and springs 8 are provided between the first extrusion ring 5 and the fixed clamping shoe and between the second extrusion ring 6 and the movable clamping shoe.

[0015] In this embodiment, the fixed clamping tile includes a fixed inner clamping tile 9 and a fixed outer clamping tile 10, the fixed inner clamping tile 9 and the fixed outer clamping tile 10 are arranged at intervals and fixedly connected together by a first sleeve 110, the first sleeve 110 is slidably sleeved on the guide column 11, the first guide rod 3 simultaneously passes through the fixed inner clamping tile 9 and the fixed outer clamping tile 10, the movable clamping tile includes a movable inner clamping tile 120 and a movable outer clamping tile 130, the movable inner clamping tile 120 and the movable outer clamping tile 130 are arranged at intervals and fixedly connected together by a second sleeve 140, the second guide rod 4 simultaneously passes through the movable inner clamping tile 120 and the movable outer clamping tile 130, the design is reasonable, and the stability of clamping the pipe can be improved.

[0016] In actual use, when docking pipes, when the first arc-shaped plug 51 on the first extrusion ring 5 is inserted into the second arc-shaped socket 62 on the second extrusion ring 6, the six first arc-shaped plugs 51 and the six second arc-shaped plugs 61 together form a closed tube body, and the length of this tube body will change with the spacing between the first extrusion ring 5 and the second extrusion ring 6, so that the flanges at the original docking point of the two pipes can be formed into a circular ring shape in the closed tube body formed by the first arc-shaped plug 51 and the second arc-shaped plug 61, thereby forming a water-stop ring with a regular shape, which not only improves the strength of the pipe docking, but also ensures the aesthetics.

[0017] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. All modifications, equivalent substitutions, improvements, etc. within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A connecting device for composite plastic pipes, comprising a frame (1), a fixed clamping shoe, a movable clamping shoe, a cylinder (2), a milling cutter and a heating plate, wherein a fixed clamping shoe is fixedly mounted on the first end of the frame (1), a movable clamping shoe is movably mounted on the frame (1) along the axial direction of the fixed clamping shoe, and the cylinder (2) is mounted on the frame (1) and is used to drive the movable clamping shoe to move. It is characterized in that A plurality of first guide rods (3) and a second guide rod (4) are respectively provided in the fixed shoe and the movable shoe so as to be movable along their own axial direction. The ends of the plurality of first guide rods (3) close to the movable shoe are commonly connected to a first extrusion ring (5). The ends of the plurality of second guide rods (4) close to the fixed shoe are commonly connected to a second extrusion ring (6). The first extrusion ring (5) and the second extrusion ring (6) are both coaxially arranged with the fixed shoe. A plurality of first arc-shaped plug blocks (51) are circumferentially arranged on the end surface of the first extrusion ring (5) close to the second extrusion ring (6). The first extrusion ring (5) A first arc-shaped socket (52) is provided between each first arc-shaped plug block (51); a second arc-shaped plug block (61) is provided on the end surface of the second extrusion ring (6) close to the first extrusion ring (5) corresponding to the first arc-shaped socket (52); a second arc-shaped socket (62) is provided on the second extrusion ring (6) corresponding to the first arc-shaped plug block (51); anti-slip nuts (7) are connected to the opposite sides of the first guide rod (3) and the second guide rod (4); springs (8) are provided between the first extrusion ring (5) and the fixed clamping shoe and between the second extrusion ring (6) and the movable clamping shoe.

2. A composite plastic pipe connection device according to claim 1, It is characterized in that The fixed tile comprises a fixed inner tile (9) and a fixed outer tile (10), the fixed inner tile (9) and the fixed outer tile (10) are arranged at intervals and fixedly connected together via a first sleeve (110), and the first guide rod (3) simultaneously passes through the fixed inner tile (9) and the fixed outer tile (10).

3. A composite plastic pipe connection device according to claim 1, It is characterized in that The movable clamping shoe comprises a movable inner clamping shoe (120) and a movable outer clamping shoe (130). The movable inner clamping shoe (120) and the movable outer clamping shoe (130) are arranged at intervals and fixed together through a second sleeve (140). The second guide rod (4) passes through both the movable inner clamping shoe (120) and the movable outer clamping shoe (130).

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