PVC pipe softening and straightening equipment

Abstract

The utility model discloses softening and straightening equipment for PVC (polyvinyl chloride) pipes. The softening and straightening equipment comprises a lower straightening seat and an upper straightening seat, according to the utility model, the upper straightening seat, the lower straightening seat and the straightening groove are adopted, so that during operation, a worker can place a PVC pipe needing to be straightened in the straightening groove, and the position, needing to be straightened, of the pipeline can be heated and softened through heat generated by the electric heating plates on the two sides, and subsequent use is facilitated; then the upper straightening seat can be reset again through rotation of the adjusting screw rod, and at the moment, the straightening grooves in the upper side and the lower side can be driven to be aligned through attachment of the upper straightening seat and the lower straightening seat, so that pipeline straightening operation can be achieved through the shapes of the straightening grooves; and the periphery of the pipeline needing to be straightened is bound in the straightening groove, and the maximum movement amount of the straightening groove is matched with the shape of the pipeline, so that secondary bending of the pipeline during straightening can be avoided, the overall straightening effect is ensured, and the pipeline straightening device has the advantages of simplicity in straightening and excessive prevention.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC pipes, and specifically, to a PVC pipe softening and straightening device. Background Technique

[0002] A PVC pipe is a pipe made of polyvinyl chloride resin. After being treated with stabilizers and lubricants, it is extruded into shape by a hot pressing method. This kind of pipe has been widely used in the early stage. PVC pipes have the advantages of strong corrosion resistance, easy bonding, low price, and hard texture. However, when PVC pipes are placed or transported for a long time, the pipes will deform. In order not to affect the subsequent normal use, it is necessary to straighten the pipe materials at this time.

[0003] In the prior art with the publication number of: CN213055975, a straightening tool for flexible insulation composite plastic pipes is disclosed, which includes a support cross beam, two groups of locking clamps, and a straightening clamp; the two groups of locking clamps are respectively rotatably installed at both ends of the support cross beam, and the locking clamps make a pendulum movement away from or close to the support cross beam with the connection point with the support cross beam as the center point; the straightening clamp is movably installed on the support cross beam up and down; the straightening clamp is placed between the two groups of locking clamps; the locking clamps are used to clamp the bent pipe ends, and the straightening clamp applies force to the locked pipe ends, so as to achieve the purpose of straightening the arc-shaped pipe ends. In order to be able to lock both ends of the arc-shaped pipe ends, the straightening tool is provided with two groups of locking clamps that can perform pendulum movement. The locking clamps swing left and right according to the arc of the pipe ends, so as to lock the pipe ends; then, the straightening clamp applies a downward thrust to the locked arc-shaped pipe ends, so that the arc-shaped pipe ends can be straightened, and then it is convenient for workers to install joints in a straightened state.

[0004] However, the above patent still has certain disadvantages when in use: when straightening the pipe, it realizes the correction of the pipe by moving the straightening clamp at the top. However, the straightening clamp is only provided on one side, which is likely to cause excessive correction of the pipe when squeezing the pipe, and then lead to secondary deformation of the pipe, affecting the overall straightening quality. At the same time, when squeezing the pipe, there is a lack of support inside the pipe. At this time, as the squeezing force increases continuously, the pipe is prone to compression deformation problems, which in turn affect the subsequent use quality of the pipe. The overall treatment effect is not very ideal.

[0005] In view of the problems in the related art, no effective solution has been proposed yet. Content of the Utility Model

[0006] (1) Technical Problems to be Solved

[0007] In view of the deficiencies of the prior art, the present utility model provides a PVC pipe softening and straightening device, which has the advantages of good shaping effect, internal support, simple straightening and prevention of excessive amount, thereby solving the problems in the above-mentioned background technology.

[0008] (II) Technical Solution

[0009] In order to achieve the above-mentioned advantages of good shaping effect, internal support, simple straightening and prevention of excessive amount, the specific technical solution adopted by the present utility model is as follows:

[0010] A PVC pipe softening and straightening device includes a lower straightening seat and an upper straightening seat. A plurality of groups of fixing plates are welded on both side surfaces of the lower straightening seat and the upper straightening seat. A sliding rod and an adjusting screw are sequentially installed between every two fixing plates. The upper straightening seat is located directly above the lower straightening seat. Straightening grooves are provided at the middle positions of the surfaces of the lower straightening seat and the upper straightening seat. Softening plates are symmetrically installed on both sides of the top of the lower straightening seat. A plurality of groups of electric heating plates are evenly installed inside the side surface of the softening plate close to the straightening groove. Accommodating grooves for accommodation are provided on both side surfaces of the bottom of the upper straightening seat directly above the softening plate.

[0011] Furthermore, adjusting grooves are symmetrically provided at the middle positions of both side surfaces of the lower straightening seat. A moving rod is slidably connected inside the adjusting groove. A spring is sleeved on the outer circumference of the moving rod, and one end of the spring is fixedly connected to the inner wall of the adjusting groove. One end of the moving rod penetrates through one side of the adjusting groove and is connected to a connecting strip. A fixing disk is fixedly installed between the connecting strips. An inserting cylinder is fixedly installed at one end of the fixing disk.

[0012] Furthermore, the size of the inserting cylinder is the same as the inner diameter size of the PVC pipe.

[0013] Furthermore, the inserting cylinder is made of a metal material.

[0014] Furthermore, a channel for the moving rod to move is provided on one side surface of the adjusting groove.

[0015] Furthermore, a limiting snap ring is clamped on the surface of the moving rod.

[0016] Furthermore, an annular groove is provided on the surface of the moving rod.

[0017] Furthermore, the size of the limiting snap ring is larger than the size of the channel on the surface of the adjusting groove.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the present utility model provides a PVC pipe softening and straightening device, which has the following beneficial effects:

[0020] (1). The utility model adopts an upper straightening seat, a lower straightening seat and a straightening groove. During operation, the operator can place the PVC pipe to be straightened in the straightening groove, and the heat generated by the electric heating plates on both sides can heat and soften the position of the pipe that needs to be straightened, facilitating subsequent use. Then, by rotating the adjusting screw, the upper straightening seat can be reset. At this time, the fitting of the upper straightening seat and the lower straightening seat can drive the straightening grooves on the upper and lower sides to align. In this way, the straightening operation of the pipe can be realized through the shape of the straightening groove. Moreover, since the pipe to be straightened is restricted inside the straightening groove, and the maximum movement of the straightening groove conforms to the shape of the pipe, secondary bending of the pipe during straightening can be avoided, ensuring the overall straightening effect, and having the advantages of simple straightening and preventing over-treatment.

[0021] (2). The utility model adopts an insertion cylinder. When the pipe is extruded and straightened, by pulling out the limit retaining ring, the spring can drive the insertion cylinder to insert into the inner position of the pipe through its reset, and then the insertion cylinder is used to support the inside of the pipe, avoiding deformation of the pipe caused by extrusion, ensuring the subsequent use quality of the pipe, improving the overall use effect and the shaping effect during pipe straightening, and having the advantages of good shaping effect and internal support. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of a PVC pipe softening and straightening device proposed by the present utility model;

[0024] Figure 2 It is a schematic connection diagram of the insertion cylinder and the moving rod of the present utility model;

[0025] Figure 3 It is a schematic structural diagram of the limit retaining ring of the present utility model;

[0026] Figure 4 It is a schematic connection diagram of the lower straightening seat and the upper straightening seat of the present utility model.

[0027] In the figure:

[0028] 1. Lower straightening base; 2. Adjustment groove; 3. Fixed plate; 4. Softening plate; 5. Straightening groove; 6. Electric heating plate; 7. Slide bar; 8. Accommodation groove; 9. Upper straightening base; 10. Adjusting screw; 11. Insertion cylinder; 12. Fixed disk; 13. Connecting bar; 14. Moving rod; 15. Limit retaining ring; 16. Spring. Detailed implementation manners

[0029] To further illustrate each embodiment, the present utility model provides accompanying drawings, which are part of the disclosure of the present utility model. They are mainly used to illustrate the embodiments and can cooperate with the relevant descriptions in the specification to explain the operation principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0030] According to an embodiment of the present utility model, a PVC pipe softening and straightening device is provided.

[0031] Now, the present utility model will be further described in conjunction with the accompanying drawings and specific implementation manners. As Figures 1-4 shown, a PVC pipe softening and straightening device according to an embodiment of the present utility model includes a lower straightening base 1 and an upper straightening base 9. A plurality of groups of fixed plates 3 are welded on both side surfaces of the lower straightening base 1 and the upper straightening base 9. A slide bar 7 and an adjusting screw 10 are sequentially installed between two adjacent fixed plates 3. The upper straightening base 9 is located directly above the lower straightening base 1. Straightening grooves 5 are provided at the middle positions of the surfaces of the lower straightening base 1 and the upper straightening base 9. Softening plates 4 are symmetrically installed on both sides of the top of the lower straightening base 1. A plurality of groups of electric heating plates 6 are evenly installed inside the side surface of the softening plate 4 close to the straightening groove 5. Accommodation grooves 8 for accommodation are provided at both side surfaces of the bottom of the upper straightening base 9 directly above the softening plate 4. The structure when the straightening grooves 5 on the surfaces of the lower straightening base 1 and the upper straightening base 9 are butted is the same as the standard state structure of the PVC pipe to be processed. The specific shape can be adjusted according to different actual pipe types and will not be specifically described.

[0032] In one embodiment, adjustment grooves 2 are symmetrically provided at the middle positions of both side surfaces of the lower straightening base 1. A moving rod 14 is slidably connected inside the adjustment groove 2. A spring 16 is sleeved on the outer periphery of the moving rod 14, and one end of the spring 16 is fixedly connected to the inner wall of the adjustment groove 2. One end of the moving rod 14 penetrates through one side of the adjustment groove 2 and is connected to a connecting bar 13. A fixed disk 12 is fixedly installed between the connecting bars 13. An insertion cylinder 11 is fixedly installed at one end of the fixed disk 12.

[0033] In one embodiment, the insertion cylinder 11 has the same size as the inner diameter of the PVC pipe. The size is set to ensure that the insertion cylinder 11 can be smoothly inserted into the PVC pipe, thereby serving the purpose of supporting the inside and facilitating the straightening operation of the pipe. Since the pipe is in a certain deformed state during straightening, the insertion cylinder 11 will move slowly under the reset drive of the spring 16. And as the upper straightening seat 9 and the lower straightening seat 1 gradually fit together, they will also straighten the pipe. At this time, the deformation in the pipe straightening area will return to the standard state, and then the insertion cylinder 11 can be smoothly inserted and stay inside for a long time during subsequent straightening, serving the purpose of limiting and shaping, which is convenient for better straightening.

[0034] In one embodiment, the insertion cylinder 11 is made of metal material. The metal material is used to ensure the service strength of the insertion cylinder 11 and ensure that it can effectively support the inside of the PVC pipe and prevent the pipe from bending during straightening.

[0035] In one embodiment, a channel for the movement of the moving rod 14 is provided on one side surface of the adjustment groove 2. The provision of the channel facilitates the movement of the moving rod 14, thereby realizing the movement of the insertion cylinder 11.

[0036] In one embodiment, a limit retaining ring 15 is clamped on the surface of the moving rod 14. The limit retaining ring 15 is provided to be clamped on the surface of the moving rod 14, thereby facilitating the limiting operation on it.

[0037] In one embodiment, an annular groove is provided on the surface of the moving rod 14. The annular groove is provided to facilitate the clamping operation of the limit retaining ring 15.

[0038] In one embodiment, the size of the limit retaining ring 15 is larger than the size of the channel on the surface of the adjustment groove 2. The size of the limit retaining ring 15 is set to ensure that it can block the continuous movement of the moving rod 14 when it is clamped on the surface of the moving rod 14. In this way, the insertion cylinder 11 can be fixed after it is removed, which is convenient for the pretreatment operation of the PVC pipe to be straightened and facilitates subsequent use.

[0039] Working principle: During actual use, personnel can separate the upper straightening seat 9 from the lower straightening seat 1 by rotating the adjusting screws 10 on both sides. Then, pull the insertion cylinder 11 to remove it from the straightening groove 5. Next, insert the limit retaining ring 15 into the slotted opening on the surface of the moving rod 14, so as to limit the movement of the moving rod 14 and prevent it from returning under the reaction force deformation of the spring 16, which is convenient for subsequent use by personnel. Then, the PVC pipe to be straightened can be placed in the straightening groove 5, and the heat generated by the electric heating plates 6 on both sides can heat and soften the position of the pipe that needs to be straightened, facilitating subsequent use. Then, by rotating the adjusting screws 10, the upper straightening seat 9 can be reset. At this time, the alignment of the upper and lower straightening grooves 5 can be driven by the fitting of the upper straightening seat 9 and the lower straightening seat 1. In this way, the straightening operation of the pipe can be achieved through the shape of the straightening groove 5. Moreover, since the pipe to be straightened is restricted inside the straightening groove 5, and the maximum movement of the straightening groove 5 conforms to the shape of the pipe, secondary bending of the pipe during straightening can be avoided, ensuring the overall straightening effect. At the same time, when the pipe is straightened by extrusion, by pulling out the limit retaining ring 15, the insertion cylinder 11 can be driven by the reset of the spring 16 to insert into the internal position of the pipe, and then the internal support operation of the pipe can be carried out through the insertion cylinder 11, avoiding deformation of the pipe caused by extrusion and ensuring the subsequent use quality of the pipe, improving the overall use effect. The whole device has the advantages of good shaping effect, internal support, simple straightening and prevention of excessive amount.

[0040] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A PVC pipe softening and straightening device, comprising a lower straightening seat (1) and an upper straightening seat (9), characterized in that, On both side surfaces of the lower straightening base (1) and the upper straightening base (9), several groups of fixing plates (3) are welded. Between every two of the fixing plates (3), a slide bar (7) and an adjusting screw rod (10) are sequentially installed. The upper straightening base (9) is located directly above the lower straightening base (1). In the middle positions of the surfaces of the lower straightening base (1) and the upper straightening base (9), straightening grooves (5) are opened. On both sides of the top of the lower straightening base (1), softening plates (4) are symmetrically installed. Inside the surface of one side of the softening plate (4) close to the straightening groove (5), several groups of electric heating plates (6) are evenly installed. Above the softening plate (4), receiving grooves (8) for accommodation are opened on both side surfaces of the bottom of the upper straightening base (9).

2. The PVC pipe softening and straightening device according to claim 1, characterized in that, In the middle positions of both side surfaces of the lower straightening base (1), adjusting grooves (2) are symmetrically opened. Inside the adjusting grooves (2), moving rods (14) are slidably connected. A spring (16) is sleeved on the outer periphery of the moving rod (14), and one end of the spring (16) is fixedly connected to the inner wall of the adjusting groove (2). One end of the moving rod (14) penetrates through one side of the adjusting groove (2) and is connected to a connecting bar (13). A fixing disk (12) is fixedly installed between the connecting bars (13). An inserting cylinder (11) is fixedly installed at one end of the fixing disk (12).

3. The PVC pipe softening and straightening device according to claim 2, characterized in that, The size of the inserting cylinder (11) is the same as the inner diameter size of the PVC pipe.

4. The PVC pipe softening and straightening device according to claim 2, wherein, The inserting cylinder (11) is made of a metal material.

5. The PVC pipe softening and straightening device according to claim 2, wherein, On one side surface of the adjusting groove (2), a channel for the movement of the moving rod (14) is opened.

6. The PVC pipe softening and straightening device according to claim 2, wherein, A limiting snap ring (15) is clamped on the surface of the moving rod (14).

7. The PVC pipe softening and straightening device according to claim 2, characterized in that, A circular groove is opened on the surface of the moving rod (14).

8. The PVC pipe softening and straightening device according to claim 6, characterized in that, The size of the limiting snap ring (15) is larger than the size of the channel on the surface of the adjusting groove (2).

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