PVC pipe heating and bending device

Abstract

The utility model discloses a PVC pipeline heating bending device belongs to pipeline bending technical field, including the placement platform, the upper end fixed mounting of placement platform has the bending structure, the inside fixed mounting of placement platform front end has the heater, the setting of the utility model protection assembly, through the cooperation of limiting sliding slot no.

Description

Technical Field

[0001] This utility model belongs to the field of pipe bending technology, specifically relating to a PVC pipe heating and bending device. Background Technology

[0002] PVC pipes are plastic pipes made primarily of polyvinyl chloride. They are characterized by corrosion resistance, light weight, low cost, and ease of processing, and are widely used in water supply and drainage, chemical, and construction industries. During use, because pipeline layout needs to adapt to spatial requirements (such as bypassing obstacles or connecting pipes at different angles), bending is often necessary to change the path. This ensures smooth pipeline connections and a rational layout, avoiding problems such as increased water flow resistance and installation inconvenience caused by right angles or complex transitions, while also improving the overall aesthetics and space utilization of the pipeline.

[0003] Chinese Patent Publication No. CN221697885U discloses a PVC pipe heating and bending device, relating to the PVC field. This PVC pipe heating and bending device includes a guide rail with two symmetrically arranged support seats slidably connected inside. A support platform is fixedly installed on the back of the guide rail, and two cover plates are slidably connected to the upper surface of the support platform near the guide rail. In this PVC pipe heating and bending device, the pipe is shaped above the two support seats and contacts rollers. A power gear drives the pipe to rotate through contact with a power source. The sliding cover plates define the heating range. The heating sleeve and motor are activated, and the heating sleeve heats the pipe from the nozzle positions. The motor, through the cooperation of a half-gear and a rack and pinion frame, drives the heating sleeve to swing left and right, thus compensating for areas not reached by adjacent nozzles. Combined with the pipe's rotation, this ensures sufficient heating of the pipe, solving the problem of uneven heating and difficulty in temperature control when directly heating with heating wires in existing technologies.

[0004] Although the existing device has solved the problem of uneven temperature control by improving the heating structure, it has obvious defects in the pipeline bending process. When the upper pressure block applies pressure, the pipeline may slip off the support structure due to uneven force during the bending process due to the lack of an effective restraint and protection structure, or local deformation and cracking may occur due to rigid compression, resulting in economic losses. Utility Model Content

[0005] The purpose of this invention is to provide a PVC pipe heating and bending device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a PVC pipe heating and bending device, comprising a placement platform, a bending structure fixedly installed at the upper end of the placement platform, a heater fixedly installed inside the front end of the placement platform, and a protective component provided at the upper end of the placement platform and below the bending structure. The protective component includes a limiting groove, a support block, a telescopic block, a helical spring, an arc-shaped groove, an arc-shaped baffle, a limiting slider, a support shaft, and an adapter hole. The limiting groove is located at the upper end of the placement platform. The support block is fixedly installed in the middle of the limiting groove. The telescopic block is movably sleeved inside the support block. The helical spring is fixedly connected between the telescopic block and the support block. The arc-shaped groove is located at the upper end of the telescopic block. The arc-shaped baffle is symmetrically distributed and fixedly installed on the front and rear sides of the arc-shaped groove. The limiting slider is slidably connected inside the limiting groove and located on the left and right sides of the support block, respectively. The support shaft is rotatably connected inside the limiting slider. The adapter hole is located on the side surface of the support shaft.

[0007] In a preferred embodiment, the bending structure includes an L-shaped support rod, a hydraulic telescopic rod, and an upper pressure block. The hydraulic telescopic rod is fixedly installed at the lower end of the L-shaped support rod, and the upper pressure block is fixedly installed at the lower end of the hydraulic telescopic rod. The lower end of the upper pressure block is provided with an arc-shaped groove that adapts to the arc-shaped baffle.

[0008] In a preferred embodiment, a bidirectional lead screw is rotatably connected inside the limiting slide groove. The bidirectional lead screw passes through the interior of the support block and is threadedly connected to the limiting sliders on the left and right sides respectively. A stepper motor is fixedly installed on the right side of the placement platform, and the stepper motor is drivenly connected to the bidirectional lead screw.

[0009] In a preferred embodiment, an adjustment assembly is provided in front of the heater. The adjustment assembly includes a second limiting slide groove, a movable baffle, a toggle slide groove, and a toggle block. The second limiting slide groove is opened at the front end of the placement platform and located directly in front of the heater. The movable baffle is slidably connected inside the second limiting slide groove and is symmetrically distributed from left to right.

[0010] In a preferred embodiment, the actuating slide is symmetrically distributed on the front end of the placement platform and is connected to the limiting slide. The actuating block is movably installed inside the actuating slide and is fixedly connected to the movable baffle.

[0011] In a preferred embodiment, a control panel is fixedly installed below the front end of the placement platform, and support legs are fixedly installed in a rectangular array at the lower end of the placement platform.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The protective component of this utility model, through the cooperation of parts such as the limiting slide, support block, telescopic block, and helical spring, can automatically adjust the support position and height according to the outer diameter and length of the pipe. The support shaft and the adapter hole can realize the quick positioning of the pipe, eliminating the trouble of manual alignment. The helical spring and the arc-shaped baffle, with elastic support and arc-shaped constraint, can not only stabilize the pipe to prevent deviation, but also buffer the bending pressure, avoid the pipe deformation due to rigid extrusion, reduce the scrap rate, and the overall structure can adapt to various specifications of pipes without frequent replacement of parts, improving the versatility of the equipment and reducing the number of steps for workers to change tooling.

[0014] The adjustment component of this utility model, through the linkage of the limiting slide groove II, the movable baffle, the toggle slide groove, and the toggle block, can flexibly control the heating range. The operator can quickly adjust the position of the movable baffle by manually toggling the toggle block, intuitively controlling the size of the heater's heating window without complex parameter settings. It can adapt to the local or overall heating needs of different bending positions. Its symmetrical sliding structure ensures uniform adjustment of the heating area, avoiding bending defects caused by uneven heating of the pipeline. The open design facilitates observation of the heating status, and the operator can fine-tune the baffle position in real time according to the degree of softening of the pipeline, improving operational flexibility. At the same time, precise control of the heating range can reduce energy waste, shorten heating time, and prevent excessive heating of non-bending areas, protecting the structural strength of other parts of the pipeline. Attached Figure Description

[0015] Figure 1 This is a three-dimensional front view schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a three-dimensional exploded structural diagram of a partial component of the protective assembly of this utility model;

[0017] Figure 3 This is a schematic diagram of the overall three-dimensional side view structure of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of a partial component of the adjustment assembly of this utility model.

[0019] In the diagram: 1. Placement platform; 2. Bending structure; 3. Protective components; 4. Heater; 5. Bidirectional lead screw; 6. Stepper motor; 7. Control panel; 8. Support leg; 301. Limiting groove one; 302. Support block; 303. Telescopic block; 304. Helical spring; 305. Arc groove one; 306. Arc baffle; 307. Limiting slider; 308. Support shaft; 309. Adaptor hole; 201. L-shaped support rod; 202. Hydraulic telescopic rod; 203. Upper pressure block; 401. Limiting groove two; 402. Moving baffle; 403. Actuating groove; 404. Actuating block. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0022] Please see Figure 1-4 This utility model provides a PVC pipe heating and bending device, including a placement platform 1, a bending structure 2 fixedly installed on the upper end of the placement platform 1, a heater 4 fixedly installed inside the front end of the placement platform 1, and a protective component 3 provided on the upper end of the placement platform 1 and below the bending structure 2. The protective component 3 includes a limiting slide groove 301, a support block 302, a telescopic block 303, a spiral spring 304, an arc groove 305, an arc baffle 306, a limiting slider 307, a support shaft 308, and an adapter hole 309. The limiting slide groove 301 is formed on the upper end of the placement platform 1, and the support block 302 is fixedly installed. Inside the limiting slide groove 301, a telescopic block 303 is movably sleeved inside a support block 302. A helical spring 304 is fixedly connected between the telescopic block 303 and the support block 302. An arc-shaped groove 305 is opened at the upper end of the telescopic block 303. Arc-shaped baffles 306 are symmetrically distributed and fixedly installed on the front and rear sides of the arc-shaped groove 305. A limiting slider 307 is slidably connected inside the limiting slide groove 301 and is located on the left and right sides of the support block 302. A support shaft 308 is rotatably connected inside the limiting slider 307. An adapter hole 309 is opened on the side surface of the support shaft 308. In this PVC pipe heating and bending device, the placement platform 1 serves as the basic load-bearing component, supporting the entire device and the PVC pipe to be processed. The bending structure 2 is installed on the upper end of the placement platform 1 and is the core component for realizing pipe bending. The heater 4 is built into the front end of the placement platform 1 and can heat the PVC pipe to soften it for bending operations. The protective component 3 is located below the bending structure 2. The limiting groove 301 provides sliding and installation space for the limiting slider 307 and the support block 302. The support block 302 and the telescopic block 303, together with the helical spring 304, can adaptively adjust the height according to the pipe size. The arc groove 305 and the arc baffle 306 can position and protect the pipe to prevent it from shifting or being damaged during bending. The limiting slider 307, the support shaft 308 and the adapter hole 309 facilitate the fixing and support of pipes of different specifications. The overall protective component 3 improves the adaptability of the device to different pipes and the stability during the processing.

[0023] Specifically, such as Figure 1 and Figure 3As shown, the bending structure 2 includes an L-shaped support rod 201, a hydraulic telescopic rod 202, and an upper pressure block 203. The hydraulic telescopic rod 202 is fixedly installed at the lower end of the L-shaped support rod 201, and the upper pressure block 203 is fixedly installed at the lower end of the hydraulic telescopic rod 202. The lower end of the upper pressure block 203 has an arc-shaped groove that adapts to the arc-shaped baffle 306. The L-shaped support rod 201 in the bending structure 2 serves to fix and support the hydraulic telescopic rod 202. The hydraulic telescopic rod 202 can move the upper pressure block 203 up and down by telescoping, applying pressure to the upper pressure block 203. The arc-shaped groove at the lower end of the upper pressure block 203 adapts to the arc-shaped baffle 306. During the bending process, it can cooperate with the protective component 3 to accurately apply pressure to the PVC pipe, causing the pipe to bend at a predetermined angle, improving the accuracy and effect of bending. At the same time, this structural design also ensures the stability and reliability of the bending process.

[0024] Specifically, such as Figure 2 and Figure 3 As shown, a bidirectional lead screw 5 is rotatably connected inside the limiting slide groove 301. The bidirectional lead screw 5 passes through the support block 302 and is threadedly connected to the left and right limiting sliders 307 respectively. A stepper motor 6 is fixedly installed on the right side of the placement platform 1, and the stepper motor 6 is driven by the bidirectional lead screw 5. The bidirectional lead screw 5 inside the limiting slide groove 301 passes through the support block 302 and is threadedly connected to the left and right limiting sliders 307. Driven by the stepper motor 6, the bidirectional lead screw 5 rotates, causing the limiting sliders 307 to slide left and right within the limiting slide groove 301. In this way, the position of the support shaft 308 can be adjusted conveniently and quickly to adapt to PVC pipes of different lengths, achieving flexible positioning and fixation of the pipe. At the same time, the limiting sliders 307 on both sides can be moved closer to the center to achieve bending of the pipe, improving the versatility and ease of operation of the device.

[0025] Specifically, such as Figure 3 and Figure 4 As shown, an adjustment assembly is provided in front of the heater 4. The adjustment assembly includes a limiting slide groove 401, a movable baffle 402, a toggle slide groove 403, and a toggle block 404. The limiting slide groove 401 is opened at the front end of the placement platform 1 and is located directly in front of the heater 4. The movable baffle 402 is slidably connected inside the limiting slide groove 401 and is symmetrically distributed on the left and right sides.

[0026] The actuating slide 403 is symmetrically distributed on the front end of the placement platform 1 and is connected to the limiting slide 401. The actuating block 404 is movably installed inside the actuating slide 403 and is fixedly connected to the movable baffle 402. In the adjustment assembly in front of the heater 4, the limiting slide 401 provides a sliding track for the movable baffle 402, and the symmetrically distributed movable baffle 402 can slide within the limiting slide 401. The actuating slide 403 is connected to the limiting slide 401, and the actuating block 404, movably installed in the actuating slide 403, is fixedly connected to the movable baffle 402. The operator can actuate the actuating block 404 to drive the movable baffle 402 to slide within the limiting slide 401, thereby controlling the heating range and heating area of ​​the PVC pipe by the heater 4. This design allows for partial or overall heating of the pipeline according to different processing needs, improving the flexibility and targeting of heating, which helps to improve processing quality and efficiency, while avoiding unnecessary energy waste. The operation is simple, intuitive, convenient, and quick, enhancing the ease of use and practicality of the device. Furthermore, operators can manually rotate the pipeline to be bent, ensuring more even heating.

[0027] Specifically, such as Figure 1 and Figure 3 As shown, a control panel 7 is fixedly installed below the front end of the placement platform 1, and support legs 8 are fixedly installed in a rectangular array at the lower end of the placement platform 1. The control panel 7 below the front end of the placement platform 1 is used to control the operation of the entire device. Operators can use the control panel 7 to set the heating temperature and time of the heater 4, and adjust parameters such as the extension and retraction of the hydraulic telescopic rod 202 in the bending structure 2, to achieve precise control of the processing process and improve the intelligence and automation of the operation. The support legs 8 in a rectangular array at the lower end of the placement platform 1 provide stable support for the entire device, ensuring the stability of the device during operation and preventing the device from shaking and affecting processing accuracy and safety.

[0028] Working principle and usage process of this utility model:

[0029] First, the worker places the PVC pipe to be bent horizontally above the support shaft 308 of the protective component 3. Both ends of the pipe are inserted into the adapter holes 309 on the side surface of the support shaft 308. Initial positioning is achieved through the fit between the circular grooves of the adapter holes 309 and the outer diameter of the pipe. Then, the operation control panel 7 starts the stepper motor 6 on the right. The stepper motor 6 drives the bidirectional lead screw 5 in the limit slide groove 301 to rotate clockwise via the transmission mechanism. The positive and negative threads at both ends of the bidirectional lead screw 5 drive the limit sliders 307 on both sides to slide synchronously towards the center, thereby adjusting the spacing of the support shaft 308 to match the actual length of the pipe. During this process, the telescopic block 303 located in the middle of the support block 302 in the limiting slide 301 compresses the helical spring 304 downward under the action of the pipeline's gravity. The elastic reaction force of the helical spring 304 lifts the pipeline through the arc groove 305 at the upper end of the telescopic block 303 and the arc baffles 306 on the front and rear sides, so that the pipeline axis is aligned with the center of the arc groove 2 of the upper pressure block 203, ensuring that the pipeline has no horizontal deviation and that its vertical position is adaptively adjusted.

[0030] Afterwards, the operator inputs the target temperature and heating time of heater 4 through the human-machine interface of control screen 7, and the system automatically generates a heating curve. Then, the operator holds the actuating blocks 404 on both sides and slides them inward or outward along the actuating groove 403, causing the movable baffle 402, which is fixedly connected to the actuating blocks 404, to move synchronously within the limiting groove 401, thereby adjusting the opening width in front of heater 4. After heater 4 is started, its internal resistance wire or infrared heating element begins to heat up. The operator holds both ends of the pipe and slowly rotates the pipe around the support shaft 308 as the rotation center, so that the area to be bent is evenly heated within the heat radiation range of heater 4 until the surface of the pipe becomes slightly soft and transparent.

[0031] Finally, once the pipeline reaches the set heating state, the control panel 7 sends a command to the hydraulic system. The hydraulic telescopic rod 202 drives the upper pressure block 203 at the lower end of the L-shaped support rod 201 to descend vertically. The arc-shaped groove at the lower end of the upper pressure block 203 gradually conforms to the arc-shaped baffle 306 of the protective component 3, forming a surrounding compression structure for the pipeline. As the hydraulic telescopic rod 202 continues to press down, the pipeline undergoes plastic bending with the support shaft 308 as the fulcrum under the constraint of the upper and lower arc-shaped structures. At this time, the helical spring 304 inside the telescopic block 303 is further compressed due to the lateral force generated by the pipeline bending, providing a dynamic buffering effect to prevent excessive instantaneous pressure from causing local dents or ruptures in the pipeline. The operator can observe the displacement data of the hydraulic telescopic rod 202 in real time through the control panel 7. When the preset bending angle is reached, the hydraulic system automatically stops pressing down and maintains the pressure for several seconds to ensure the pipeline is shaped.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PVC pipe heating and bending device, comprising a placement platform (1), characterized in that: A bending structure (2) is fixedly installed on the upper end of the placement platform (1). A heater (4) is fixedly installed inside the front end of the placement platform (1). A protective component (3) is provided on the upper end of the placement platform (1) and below the bending structure (2). The protective component (3) includes a limiting slide groove (301), a support block (302), a telescopic block (303), a helical spring (304), an arc groove (305), an arc baffle (306), a limiting slider (307), a support shaft (308), and an adapter hole (309). The limiting slide groove (301) is opened on the upper end of the placement platform (1), and the support block (302) is fixedly installed in the limiting slide groove (301). In the middle of the part, the telescopic block (303) is movably sleeved inside the support block (302), the helical spring (304) is fixedly connected between the telescopic block (303) and the support block (302), the arc-shaped groove (305) is opened at the upper end of the telescopic block (303), the arc-shaped baffle (306) is symmetrically distributed and fixedly installed on the front and rear sides of the arc-shaped groove (305), the limiting slider (307) is slidably connected inside the limiting slide groove (301) and is located on the left and right sides of the support block (302), the support shaft (308) is rotatably connected inside the limiting slider (307), and the adapter hole (309) is opened on the side surface of the support shaft (308).

2. The PVC pipe heating and bending device according to claim 1, characterized in that: The bending structure (2) includes an L-shaped support rod (201), a hydraulic telescopic rod (202), and an upper pressure block (203). The hydraulic telescopic rod (202) is fixedly installed at the lower end of the L-shaped support rod (201), and the upper pressure block (203) is fixedly installed at the lower end of the hydraulic telescopic rod (202). The lower end of the upper pressure block (203) is provided with an arc-shaped groove that is adapted to the arc-shaped baffle (306).

3. The PVC pipe heating and bending device according to claim 1, characterized in that: The limiting slide groove (301) is rotatably connected to a bidirectional lead screw (5). The bidirectional lead screw (5) passes through the interior of the support block (302) and is threadedly connected to the limiting sliders (307) on the left and right sides respectively. A stepper motor (6) is fixedly installed on the right side of the placement platform (1). The stepper motor (6) is connected to the bidirectional lead screw (5) in a transmission manner.

4. The PVC pipe heating and bending device according to claim 1, characterized in that: An adjustment assembly is provided in front of the heater (4). The adjustment assembly includes a limiting slide groove 2 (401), a movable baffle (402), a toggle slide groove (403), and a toggle block (404). The limiting slide groove 2 (401) is opened at the front end of the placement platform (1) and is located directly in front of the heater (4). The movable baffle (402) is slidably connected inside the limiting slide groove 2 (401) and is symmetrically distributed on the left and right sides.

5. A PVC pipe heating and bending device according to claim 4, characterized in that: The actuating slide (403) is symmetrically distributed on the front end of the placement platform (1) and is connected to the limiting slide (401). The actuating block (404) is movably installed inside the actuating slide (403) and is fixedly connected to the moving baffle (402).

6. A PVC pipe heating and bending device according to claim 1, characterized in that: A control panel (7) is fixedly installed below the front end of the placement platform (1), and support legs (8) are fixedly installed in a rectangular array at the lower end of the placement platform (1).

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