Limiting device for flaring of multi-size plastic pipes

Abstract

The utility model discloses a limiting device for flaring plastic pipes with multiple sizes, relates to the technical field of plastic pipe processing, and aims to solve the technical problems that the flaring length of an existing flaring device cannot be adjusted and the existing flaring device cannot be matched with the plastic pipes with multiple different specifications, and adopts the technical scheme that the limiting device comprises an L-shaped mounting seat, an adjusting mechanism for flaring the plastic pipe is arranged on the mounting seat, a limiting piece for limiting the length of the plastic pipe is connected to the adjusting mechanism in a sliding manner, and the limiting piece is fixed to the adjusting mechanism through a jackscrew; the adjusting rod is in threaded connection with the mounting seat, the moving ring is rotationally connected to the adjusting rod through the end, the flaring piece slides in the guide groove through the guide block, a connecting piece on the bottom face of the flaring piece and a connecting piece on the moving ring are connected through a connecting rod, and the connecting rod is in an inclined state and is matched with the connecting piece in the threaded moving process of the adjusting rod; and the diameters of the three groups of flaring pieces are changed by taking the adjusting rod as a circle center so as to adapt to plastic pipes with multiple sizes.

Description

Technical Field

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

[0002] As an important component of chemical building materials, plastic pipes are widely accepted by users for their superior performance, hygiene, environmental protection, low consumption and other advantages. The main types include UPVC drainage pipes, UPVC water supply pipes, aluminum-plastic composite pipes, polyethylene (PE) water supply pipes, and polypropylene PPR hot water pipes.

[0003] The existing expander can usually only process plastic pipes of one specification when in use, and cannot adjust the expansion length according to demand, resulting in unsatisfactory expansion effect.

[0004] Therefore, the present application provides a limiting device for expanding plastic pipes of multiple sizes to meet the needs. Utility Model Content

[0005] The purpose of the present application is to provide a limiting device for expanding plastic pipes of various sizes, aiming to solve the problem that the existing expander cannot adjust the expanding length and adapt to plastic pipes of various specifications.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a limiting device for expanding plastic pipes of multiple sizes, comprising a mounting seat, the mounting seat is L-shaped, an adjusting mechanism for expanding the plastic pipe is provided on the mounting seat, a limiting piece for limiting the length of the plastic pipe is slidably connected to the adjusting mechanism, and the limiting piece is fixed to the adjusting mechanism by a top screw.

[0007] Preferably, the adjustment mechanism includes a flaring piece, a connecting rod, a movable ring, and an adjusting rod. A guide groove is provided on the outer wall of the mounting seat. A plurality of guide grooves are provided in a circular array. A rotating hole is provided at the center of the plurality of guide grooves. The rotating hole is threadedly connected with an adjusting rod. The end of the adjusting rod is detachably connected with a movable ring. The movable ring is rotatably connected to the adjusting rod. A guide rod is provided in the guide groove. A guide block is slidably connected to the guide rod. A flaring piece is provided on the outer wall of the guide block. Connecting pieces are provided on the opposite surfaces of the flaring piece and the outer wall of the movable ring. The two groups of connecting pieces are connected by a connecting rod, and the end of the connecting rod is hinged. A turning handle is inserted at the other end of the adjusting rod.

[0008] Preferably, there are three groups of expansion pieces, and the expansion pieces are plates with curved outer sides. The curved surface design reduces damage to the inner wall of the pipeline during use, avoiding damage to the interior and affecting use.

[0009] Preferably, a slide groove is provided on the top surface of the expansion piece, a slider is slidably connected in the slide groove, a limit piece is provided on the slider, a rotation groove is provided on the top surface of the limit piece, a through hole is provided on the top surface of the slider, the position of the through hole corresponds to the rotation groove, and a top screw is threadedly connected between the two.

[0010] Preferably, a terminal head is provided at the end of the adjusting rod, the diameter of the terminal head is smaller than that of the adjusting rod, and the movable ring is slidably connected to the terminal head, and a nut is threadedly connected to the end of the terminal head.

[0011] Preferably, a scale is provided on the top surface of the expansion piece and beside the guide groove.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] The utility model comprises an adjusting rod threadedly connected on a mounting seat, a movable ring rotatably connected to the adjusting rod through an end head, a flaring piece sliding in a guide groove through a guide block, a connecting piece on the bottom surface of the flaring piece and a connecting piece on the movable ring are connected through a connecting rod, and the connecting rod is in an inclined state. The two cooperate with each other in the process of threaded movement of the adjusting rod, and the three groups of flaring pieces change their diameters with the adjusting rod as the center of the circle, thereby realizing adaptation to plastic pipes of multiple sizes, and cooperating with a limit piece slidably connected on the flaring piece to determine the flaring length of each group of different plastic pipes. Compared with the existing flaring device, the present design has strong adaptability and can process plastic pipes of multiple different requirements.

[0014] In the utility model, the scales arranged beside the flaring piece and the guide groove are convenient for accurate adjustment, thereby meeting various processing needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 The utility model is a cross-sectional structural schematic diagram Figure 1 ;

[0018] Figure 3 The schematic diagram of the cross-sectional structure of the utility model is Figure 2 ;

[0019] Figure 4 This is a schematic diagram of the structure of the adjustment mechanism of the utility model;

[0020] Figure 5 It is a partial cross-sectional structural diagram of the adjustment mechanism of the utility model;

[0021] Figure 6 This is a schematic diagram of the mobile ring structure of the utility model;

[0022] Figure 7 It is a schematic diagram of the structure of the limiting member of the utility model.

[0023] In the figure: 1. mounting seat; 11. guide groove; 12. rotating hole; 13. guide rod; 2. flaring member; 21. guide block; 22. slide groove; 3. connecting member; 4. connecting rod; 5. moving ring; 6. adjusting rod; 61. end; 7. turning handle; 8. slider; 81. perforation; 9. limit member; 91. rotating groove; 10. top screw. DETAILED DESCRIPTION

[0024] 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 in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example: Reference Figure 1-7 The illustrated limiting device for expanding a multi-size plastic pipe comprises a mounting seat 1, which is an L-shaped member, and a rotating hole 12 which is interconnected with each other on the left and right is provided in the middle of its vertical section. With the rotating hole 12 as the center of the circle, three groups of guide grooves 11 are arranged in a circular array, and a guide rod 13 is arranged in the guide groove 11. The function of the guide rod 13 is to fix the guide block 21 and provide a moving trajectory for the guide block 21. An expanding piece 2 is welded to the outer wall of the guide block 21, and the three groups of expanding pieces 2 form a "circle". A connecting piece 3 is provided on the opposite surface of the expanding piece 2. An adjusting rod 6 is connected to the inner thread of the rotating hole 12. The threaded connection of the adjusting rod 6 is to stably change the extension length of the adjusting rod 6, thereby driving the moving ring 5 which is rotatably connected at the end to move. The moving ring 5 cooperates with the connecting piece 3 on the expanding piece 2 through the connecting rod 4 through the connecting piece 3 provided on the outer wall of the moving ring 5, thereby changing the diameter of the "circle" formed by the three groups of expanding pieces 2, thereby achieving the purpose of adapting to a variety of plastic pipes of different specifications, and improving its practicality and versatility.

[0026] In order to facilitate the installation of the movable ring 5, in this embodiment, an end portion of the adjusting rod 6 is provided with an end cap 61, and the movable ring 5 is sleeved on the end cap 61, and the outer end of the end cap 61 is threadedly connected with a nut to realize the limited installation of the movable ring 5. In conjunction with the movement of the adjusting rod 6, the connecting rod 4 is provided to push the flaring member 2 to expand outward, thereby achieving the purpose of adapting to the plastic pipe.

[0027] Since different plastic pipes require different flaring depths (lengths), in this embodiment, a T-shaped slide groove 22 is provided on the outer wall of the flaring member 2, and a T-shaped slider 8 is slidably connected in the slide groove 22. A limit member 9 is welded to the outward end surface of the slider 8, and a rotation groove 91 is provided on the top surface of the limit member 9. The position of the rotation groove 91 corresponds to the through hole 81 on the slider 8. The top screw 10 is threadedly connected in the rotation groove 91, passes through the through hole 81 and presses against the slide groove 22, thereby achieving the purpose of fixing the limit member 9, thereby adjusting the position of the limit member 9 according to the scale on the flaring member 2.

[0028] The scale provided beside the guide groove 11 is convenient for the staff to adjust the inner diameter of the plastic pipe immediately after knowing it.

[0029] The adjusting rod 6 is driven to rotate by the plugged turning handle 7.

[0030] The practical working principle of the present invention is as follows: a heating tool such as a hot air gun is used to soften the end of the plastic pipe, and then the handle 7 is rotated according to the inner diameter of the plastic pipe. The handle 7 drives the adjusting rod 6 to rotate in the rotating hole 12 of the mounting seat 1, so that the adjusting rod 6 moves backward, and the moving adjusting rod 6 drives the moving ring 5 to move through the end 61 and the nut, so that the connecting rod 4 is pushed upward, and its two ends are turned over and adjusted at an angle on the connecting piece 3 on the expanding piece 2 and the connecting piece 3 on the moving ring 5, so that the expanding piece 2 is pushed outward, so that the diameter of the three groups of expanding pieces 2 becomes larger to adapt to the inner diameter of the plastic pipe, and then the handle 7 is continuously rotated to expand the diameter. At the same time, when the expanding piece 2 moves outward, it moves on the guide rod 13 in the guide groove 11 through the guide block 21 provided on its end face to ensure the stability of the structure.

[0031] While completing the above-mentioned expansion, the top screw can be loosened according to processing needs to make the slider 8 slide in the slide groove 22. After moving the slider 8 and the limit member 9 to the required position, tighten the top screw 10 again to make the top screw 10 rotate in the rotating groove 91 and pass through the through hole 81, thereby completing the purpose of fixing the limit member 9.

[0032] The electromechanical connection involved in the present utility model is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of tests, which belongs to common knowledge.

[0033] Components not described in detail herein are prior art.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A limiting device for expanding plastic pipes of multiple sizes, characterized by: The invention comprises a mounting seat (1), the mounting seat (1) is L-shaped, an adjusting mechanism for expanding a plastic tube is provided on the mounting seat (1), a limiting member (9) for limiting the length of the plastic tube is slidably connected to the adjusting mechanism, and the limiting member (9) is fixed to the adjusting mechanism by a top screw (10).

2. A limiting device for expanding a multi-size plastic pipe according to claim 1, characterized in that: The adjustment mechanism comprises a flaring member (2), a connecting rod (4), a moving ring (5), and an adjusting rod (6). A guide groove (11) is provided on the outer wall of the mounting seat (1). A plurality of groups of the guide grooves (11) are arranged in a circular array. A rotating hole (12) is provided at the center of each of the plurality of guide grooves (11). The adjusting rod (6) is threadedly connected to the rotating hole (12). The end of the adjusting rod (6) is detachably connected to the moving ring (5). The moving ring (5) is rotatably connected to the adjusting rod (6). A guide rod (13) is provided in the guide groove (11). A guide block (21) is slidably connected to the guide rod (13). The flaring member (2) is provided on the outer wall of the guide block (21). Connecting members (3) are provided on the opposite surfaces of the flaring member (2) and the outer wall of the moving ring (5). Two groups of the connecting members (3) are connected via the connecting rod (4). The end of the connecting rod (4) is hinged. A rotating handle (7) is inserted at the other end of the adjusting rod (6).

3. A limiting device for expanding a multi-size plastic pipe according to claim 2, characterized in that: There are three groups of the expansion pieces (2) in total, and the expansion pieces (2) are plates with arc-shaped outer surfaces.

4. A limiting device for expanding a multi-size plastic pipe according to claim 2 or 3, characterized in that: The top surface of the flaring member (2) is provided with a slide groove (22), a slider (8) is slidably connected in the slide groove (22), the slider (8) is provided with the limiting member (9), the top surface of the limiting member (9) is provided with a rotation groove (91), the top surface of the slider (8) is provided with a through hole (81), the through hole (81) and the rotation groove (91) are located correspondingly, and a top screw (10) is threadedly connected therebetween.

5. A limiting device for expanding a multi-size plastic pipe according to claim 2, characterized in that: The end of the adjusting rod (6) is provided with an end head (61), the diameter of the end head (61) is smaller than that of the adjusting rod (6), and the moving ring (5) is slidably connected to the end head (61), and the end of the end head (61) is threadedly connected with a nut.

6. A limiting device for expanding a multi-size plastic pipe according to claim 5, characterized in that: A scale is provided on the top surface of the expansion piece (2) and beside the guide groove (11).

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