Shape correcting device for plastic tube production

Abstract

The utility model discloses the appearance correction device for plastic pipe production, including device base still includes the first fixed seat of fixed connection in device base, the first motor of fixed connection in the first fixed seat, the first rotating shaft of fixed connection in the first motor output, the first gear of fixed connection in the first rotating shaft, the rotation toothed plate of rotation connection in the first fixed seat, the first support frame of fixed connection in the first fixed seat inside, the second gear of rotation connection in the first support frame. Through the central limiting of plastic pipe to limiting roller, can ensure when the appearance correction of different model size plastic pipe, limiting roller can always play the stable central limiting effect to plastic pipe, still can adjust limiting roller position according to different model size plastic pipe, when facing the plastic pipe of different diameter, wall thickness etc. parameter, can satisfy the limiting demand of different plastic pipe, greatly promoted the versatility and application scope of device.

Description

Technical Field

[0001] This utility model relates to the field of plastic pipe production, and in particular to a shape correction device for plastic pipe production. Background Technology

[0002] In the existing technology system, the shape correction device for plastic pipe production is a key piece of equipment to ensure the quality of pipe forming. Its working principle is to apply directional pressure to the plastic pipe through multiple sets of adjustable correction rollers, gradually eliminating deformation defects such as bending and ellipticing generated in the pipe during the extrusion molding process, so that the pipe groove meets the standard.

[0003] In existing technologies, common shape straightening devices used in plastic pipe production often experience misalignment between the pipe axis and the device's centerline due to process fluctuations during pipe extrusion or positioning errors in the conveying system. When an eccentric pipe enters the straightening area, the resulting force field distortion causes excessive straightening pressure in some areas while insufficient pressure is applied to others. This uneven stress state leads to differences in the pipe's elastic recovery. Areas with excessive pressure experience reverse bending after leaving the straightening device, resulting in straightness deviations and asymmetrical deformation of the pipe cross-section, forming elliptical pipes with excessive ellipticity. Therefore, an improved shape straightening device for plastic pipe production is needed to address these issues. Utility Model Content

[0004] To overcome the problem that when the plastic tube enters the straightening device, it is eccentric, and the subsequent force applied to the tube is unevenly distributed, ultimately resulting in the tube's straightness and roundness failing to meet the standards.

[0005] The technical solution of this utility model is as follows: a shape straightening device for plastic pipe production, including a device base, a first fixed seat fixedly connected to the device base, a first motor fixedly connected to the first fixed seat, a first rotating shaft fixedly connected to the output end of the first motor, a first gear fixedly connected to the first rotating shaft, a rotating gear plate rotatably connected to the first fixed seat, a first support frame fixedly connected inside the first fixed seat, a second gear rotatably connected to the first support frame, a third gear fixedly connected to one end of the second gear, a second support frame fixedly connected inside the first fixed seat, a sliding rod meshing with the third gear, a first connecting seat fixedly connected to one end of the sliding rod, a limiting roller rotatably connected to the first connecting seat, a straightening component disposed on the device base, and a snap-fit ​​component disposed on the straightening component. The first gear meshes with the rotating gear plate, the second gear meshes with the rotating gear plate, and the sliding rod is slidably connected to the second support frame. The push rod and the first motor drive the first rotating shaft and the first gear to rotate. The rotation of the first gear adjusts the rotation of the rotating gear plate. When the rotating gear plate rotates, it cooperates with the second gear to drive the third gear to rotate. The rotation of the third gear adjusts the movement of the sliding rod.

[0006] Preferably, the first fixed seat has a limiting groove at the relative position of the rotating toothed plate, and the rotating toothed plate is rotatably connected to the groove.

[0007] Preferably, the second support frame has a limiting groove at the relative position of the sliding rod, and the sliding rod is slidably connected to the groove.

[0008] Preferably, the correction assembly includes a second fixed seat fixedly connected to the device base, a second motor fixedly connected inside the second fixed seat, a fourth gear fixedly connected to the output end of the second motor, a rotating seat rotatably connected to the second fixed seat, a telescopic rod body fixedly connected to the rotating seat, a first slider fixedly connected to one end of the telescopic rod body, a correction plate body disposed on the first slider, a snap-fit ​​assembly disposed on the first slider, the fourth gear meshing with the rotating seat, the second motor driving the fourth gear to rotate, the rotation of the rotating seat being adjusted by the rotation of the fourth gear, and the first slider and the correction plate body being moved by the operation of the third gear.

[0009] Preferably, the second fixed seat has a limiting groove at the relative position of the rotating seat, and the rotating seat is rotatably connected to the groove.

[0010] Preferably, the snap-fit ​​assembly includes a fixed housing fixedly connected to the telescopic rod body, a push button slidably connected to the fixed housing, a fixed plate fixedly connected to the push button, a connecting rod fixedly connected to the fixed plate, a fixed rod fixedly connected to the connecting rod, a second slider slidably connected to the fixed housing, a snap-fit ​​block fixedly connected to the second slider, a first spring fixedly connected between the snap-fit ​​block and the fixed housing, the snap-fit ​​block snap-fitted to the correction plate body, and the fixed rod slidably connected to the second slider. Pressing the push button moves the fixed plate and the connecting rod, and when the connecting rod moves, it drives the second slider to slide through the fixed rod.

[0011] Preferably, the second slider has a limiting groove at the relative position of the fixed rod, and the fixed rod is slidably connected to the groove.

[0012] Preferably, the first slider has a through groove, and the snap-fit ​​block passes through the through groove and snaps onto the correction plate body.

[0013] The beneficial effects of this utility model are:

[0014] 1. By using limiting rollers to center and limit the plastic tube, it is ensured that the limiting rollers can always play a stable centering and limiting role when correcting the shape of plastic tubes of different models and sizes. At the same time, the position of the limiting rollers can be adjusted according to different models and sizes of plastic tubes. When dealing with plastic tubes with different parameters such as diameter and wall thickness, it can meet the limiting requirements of different plastic tubes, which greatly improves the versatility and applicability of the device and reduces the cost of equipping multiple sets of equipment for producing different models of plastic tubes.

[0015] 2. In scenarios where the straightening plate body needs to be replaced, operators do not need to use complex tools or spend a lot of time disassembling bolts, nuts, and other fasteners. They can simply complete the snap-fit ​​and detachment by pressing the button, reducing the replacement time from tens of minutes or even hours in the traditional way to just minutes. This significantly reduces equipment downtime and improves the continuous operation efficiency of the production line. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of the shape correction device for plastic pipe production according to this utility model;

[0017] Figure 2 for Figure 1 A cross-sectional structural schematic diagram of the first fixed seat in the middle;

[0018] Figure 3 This is a schematic diagram of the rotating toothed plate and its connected components of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the corrective component of this utility model;

[0020] Figure 5 This is a schematic diagram of the snap-fit ​​assembly of this utility model;

[0021] Figure 6 This is a structural diagram showing the disassembled structure of the second slider and its connected components of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Device base; 21. First motor; 22. First rotating shaft; 23. First gear; 24. Rotating gear plate; 25. First support frame; 26. Second gear; 27. Third gear; 28. Second support frame; 29. ​​Sliding rod; 210. First connecting seat; 211. Limiting roller; 212. First fixed seat; 213. Second fixed seat; 214. Second motor; 215. Fourth gear; 216. Rotating seat; 217. Telescopic rod body; 218. First slider; 219. Correcting plate body; 31. Fixed shell; 32. Press button; 33. Fixed plate; 34. Connecting rod; 35. Fixed rod; 36. Second slider; 37. Locking block; 38. First spring. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figure 1 - Figure 6 This utility model provides an embodiment of a shape correction device for plastic pipe production, including a device base 1, and further including a first fixed seat 212 fixedly connected to the device base 1, a first motor 21 fixedly connected to the first fixed seat 212, a first rotating shaft 22 fixedly connected to the output end of the first motor 21, a first gear 23 fixedly connected to the first rotating shaft 22, a rotating gear plate 24 rotatably connected to the first fixed seat 212, a first support frame 25 fixedly connected inside the first fixed seat 212, a second gear 26 rotatably connected to the first support frame 25, and a second gear 27 fixedly connected to the first support frame 25. The third gear 27 at one end of gear 26, the second support frame 28 fixedly connected inside the first fixed seat 212, the sliding rod 29 meshing with the third gear 27, the first connecting seat 210 fixedly connected to one end of the sliding rod 29, the limiting roller 211 rotatably connected to the first connecting seat 210, the straightening assembly set on the device base 1, and the snap-fit ​​assembly set on the straightening assembly, the first gear 23 meshing with the rotating gear plate 24, the second gear 26 meshing with the rotating gear plate 24, the sliding rod 29 slidably connected to the second support frame 28, and the push rod first motor 21 working to drive the first rotating shaft 22. The rotation of the first gear 23 adjusts the rotation of the rotating gear plate 24. When the rotating gear plate 24 rotates, it engages with the second gear 26, driving the third gear 27 to rotate. The rotation of the third gear 27 adjusts the movement of the sliding rod 29. After the heated plastic tube is detached from the first fixed seat 212, the first motor 21 starts working. Its output drives the first rotating shaft 22 to rotate, thereby causing the first gear 23 fixed on the first rotating shaft 22 to rotate synchronously. Since the first gear 23 meshes with the rotating gear plate 24, the rotation of the first gear 23 drives the rotating gear plate 24 to rotate in the first... Rotation occurs within the rotating groove of the fixed seat 212. Simultaneously, as the rotating toothed plate 24 rotates, the second gear 26 meshes with it, causing the rotating toothed plate 24 to drive the second gear 26 to rotate on the first support frame 25. The third gear 27, which is fixedly connected to one end of the second gear 26, also rotates synchronously. The third gear 27 meshes with the sliding rod 29, causing the sliding rod 29 to move linearly. The movement of the sliding rod 29 then drives the first connecting seat 210 to move, adjusting the position of the limiting roller 211 while simultaneously limiting the plastic tube. Subsequently, the shape of the plastic tube is corrected through the operation of the straightening assembly.

[0025] Please see Figure 1 - Figure 4In this embodiment, the first fixed seat 212 has a limiting groove at the relative position of the rotating toothed plate 24. The rotating toothed plate 24 is rotatably connected to the groove. The groove limits the rotation of the rotating toothed plate 24, effectively preventing the rotating toothed plate 24 from deviating during rotation and ensuring that the rotating toothed plate 24 always rotates stably around the preset axis, thus improving the stability and accuracy of the rotating toothed plate 24 during rotation. The second support frame 28 has a limiting groove at the relative position of the sliding rod 29. The sliding rod 29 is slidably connected to the groove. The groove provides a limiting function for the sliding of the sliding rod 29, preventing the sliding rod 29 from moving laterally during sliding. The longitudinal offset ensures that the sliding rod 29 always moves smoothly along the extension direction of the groove, improving the accuracy and reliability of sliding. The correction assembly includes a second fixed seat 213 fixedly connected to the device base 1, a second motor 214 fixedly connected inside the second fixed seat 213, a fourth gear 215 fixedly connected to the output end of the second motor 214, a rotating seat 216 rotatably connected to the second fixed seat 213, a telescopic rod body 217 fixedly connected to the rotating seat 216, a first slider 218 fixedly connected to one end of the telescopic rod body 217, a correction plate body 219 disposed on the first slider 218, and a snap-fit ​​assembly disposed on the first slider 218. On the 18th, the fourth gear 215 meshes with the rotating seat 216. The second motor 214 drives the fourth gear 215 to rotate, adjusting the rotation of the rotating seat 216. The third gear 27 drives the first slider 218 and the straightening plate body 219 to move. The structural design of the straightening assembly achieves multi-dimensional adjustment functions. The second motor 214, through the meshing transmission between the fourth gear 215 and the rotating seat 216, can precisely control the rotation angle of the rotating seat 216, thereby adjusting the orientation of the telescopic rod body 217 and the straightening plate body 219. The telescopic rod body 217 enables the telescopic movement of the straightening plate body 219, in conjunction with the third gear... 27 drives the first slider 218 to move, so that the straightening plate body 219 can flexibly adjust its position to meet the straightening needs under different working conditions, and improve the flexibility and applicability of the straightening operation. The second fixed seat 213 has a limit groove at the relative position of the rotating seat 216. The rotating seat 216 is rotatably connected to the groove. The groove provides stable rotation support and limit guide for the rotating seat 216, which can effectively constrain the movement of the rotating seat 216, prevent the rotating seat 216 from axially offset or radially shaking during rotation, and ensure that the rotating seat 216 always rotates smoothly around the fixed axis, thus improving the accuracy of the fit between the rotating seat 216 and the second fixed seat 213.

[0026] Please see Figure 1 , Figure 5 - Figure 6In this embodiment, the snap-fit ​​assembly includes a fixed housing 31 fixedly connected to the telescopic rod body 217, a push button 32 slidably connected to the fixed housing 31, a fixed plate 33 fixedly connected to the push button 32, a connecting rod 34 fixedly connected to the fixed plate 33, a fixed rod 35 fixedly connected to the connecting rod 34, a second slider 36 slidably connected to the fixed housing 31, a snap-fit ​​block 37 fixedly connected to the second slider 36, a first spring 38 fixedly connected between the snap-fit ​​block 37 and the fixed housing 31, and the snap-fit ​​block 37 snap-fittingly connected to the... On the straightening plate body 219, a fixing rod 35 is slidably connected to the second slider 36. Pressing the button 32 moves the fixing plate 33 and the connecting rod 34. When the connecting rod 34 moves, it drives the second slider 36 to slide via the fixing rod 35. The snap-fit ​​assembly achieves quick assembly and disassembly of the straightening plate body 219 through a press-type linkage structure. The button 32 drives the second slider 36 to slide through the transmission of the fixing plate 33, the connecting rod 34, and the fixing rod 35, thereby controlling the snap-fit ​​block 37 to engage or disengage from the straightening plate body 219. The operation is convenient and efficient. During engagement, the first spring 38 provides continuous elastic force to the engagement block 37, ensuring the stability of the engagement and preventing the straightening plate body 219 from accidentally falling off during operation. Simultaneously, the sliding connection of each component ensures smooth operation and improves the convenience of replacing or maintaining the straightening plate body 219. The second slider 36 has a limiting groove at the relative position of the fixing rod 35. The fixing rod 35 is slidably connected to the groove, which guides and limits the sliding of the fixing rod 35, ensuring that the fixing rod 35 moves the second slider 36 smoothly. During movement, it can move smoothly along the preset trajectory, avoiding the offset between the fixed rod 35 and the second slider 36. The first slider 218 has a through groove, and the snap-fit ​​block 37 passes through the through groove and snaps onto the straightening plate body 219. By opening the through groove, the snap-fit ​​block 37 can directly snap into the straightening plate body 219, ensuring the compactness of the snap-fit ​​structure. At the same time, the through groove plays a certain guiding role in the movement of the snap-fit ​​block 37, ensuring that the snap-fit ​​block 37 moves along a straight line during snap-fit ​​or separation, thus improving the accuracy of snap-fit ​​positioning.

[0027] When the plastic tube production shape straightening device is in use, after the heated plastic tube is inserted into the first fixed base 212, the first motor 21 starts working, and its output end drives the first rotating shaft 22 to rotate. The first gear 23 fixed on the first rotating shaft 22 rotates together. Since the first gear 23 meshes with the rotating gear plate 24, the rotation of the first gear 23 drives the rotating gear plate 24 to rotate in the rotating groove of the first fixed base 212. During the rotation of the rotating gear plate 24, the second gear 26 meshes with the rotating shaft 212. On the moving gear plate 24, rotating the gear plate 24 will drive the second gear 26 to rotate on the first support frame 25. The third gear 27, which is fixedly connected to one end of the second gear 26, will also rotate synchronously. The third gear 27 meshes with the sliding rod 29. Its rotation will cause the sliding rod 29 to slide linearly in the groove of the second support frame 28. The movement of the sliding rod 29 will drive the first connecting seat 210 fixed at one end to move, adjusting the position of the limiting roller 211 to limit the plastic tube. Then, the second motor 21 will start working through the straightening assembly. 4. The operation drives the fourth gear 215 to rotate. Since the fourth gear 215 meshes with the rotating seat 216, it drives the rotating seat 216 to rotate in the groove of the second fixed seat 213, thereby adjusting the orientation of the telescopic rod body 217 fixed on the rotating seat 216. Then, the telescopic rod body 217 is controlled by an external controller to move the first slider 218 fixed at one end, thus correcting the shape of the plastic tube. When the correction plate body 219 needs to be maintained or replaced, the fixed plate is moved by pressing the button 32. When the connecting rod 34 moves, the connecting rod 34 slides in the groove of the second slider 36 through the fixing rod 35, thereby driving the second slider 36 to slide on the fixing shell 31, causing the snap-fit ​​block 37 fixed on the second slider 36 to move, so that the snap-fit ​​block 37 is separated from the straightening plate body 219, and the straightening plate body 219 can be removed. After the replacement is completed, the pressing button 32 is released, the first spring 38 returns to its original position and pushes the snap-fit ​​block 37 through the through groove to snap it back onto the straightening plate body 219, thus completing the fixation of the straightening plate body 219.

[0028] Through the above steps, the limiting roller 211 centers and limits the plastic tube, ensuring that when correcting the shape of plastic tubes of different sizes, the limiting roller 211 can always play a stable centering and limiting role for the plastic tube. At the same time, the position of the limiting roller 211 can be adjusted according to the different sizes of plastic tubes to solve the problem that when the plastic tube enters the correction device, it is eccentric, and the force applied to the tube is unevenly distributed, and the straightness and roundness of the tube cannot meet the standards.

Claims

1. A profile rectifying device for plastic pipe production, comprising a device base (1), characterized in that: It also includes a first fixed base (212) fixedly connected to the device base (1), a first motor (21) fixedly connected to the first fixed base (212), a first rotating shaft (22) fixedly connected to the output end of the first motor (21), a first gear (23) fixedly connected to the first rotating shaft (22), a rotating gear plate (24) rotatably connected to the first fixed base (212), a first support frame (25) fixedly connected inside the first fixed base (212), a second gear (26) rotatably connected to the first support frame (25), a third gear (27) fixedly connected to one end of the second gear (26), a second support frame (28) fixedly connected inside the first fixed base (212), a sliding rod (29) meshing with the third gear (27), and a sliding rod (29) fixedly connected to the sliding rod. The first connecting seat (210) on one end of the moving rod (29), the limiting roller (211) rotatably connected to the first connecting seat (210), the correction component set on the device base (1), the snap-fit ​​component set on the correction component, the first gear (23) meshing on the rotating tooth plate (24), the second gear (26) meshing on the rotating tooth plate (24), the sliding rod (29) slidably connected to the second support frame (28), the push rod first motor (21) working drives the first rotating shaft (22) and the first gear (23) to rotate, the rotation of the rotating tooth plate (24) is adjusted by the rotation of the first gear (23), the rotation of the rotating tooth plate (24) is adjusted by the rotation of the first gear (23), the rotation of the rotating tooth plate (24) is adjusted by the rotation of the second gear (26) to drive the third gear (27) to rotate, and the movement of the sliding rod (29) is adjusted by the rotation of the third gear (27).

2. The profile correcting device for plastic pipe production according to claim 1, characterized in that: The first fixed seat (212) has a limiting groove at the relative position of the rotating toothed plate (24), and the rotating toothed plate (24) is rotatably connected to the groove.

3. The profile correcting device for plastic pipe production according to claim 1, characterized in that: The second support frame (28) has a limiting groove at the relative position of the sliding rod (29), and the sliding rod (29) is slidably connected to the groove.

4. The shape correction device for plastic pipe production according to claim 1, characterized in that: The correction assembly includes a second fixed seat (213) fixedly connected to the device base (1), a second motor (214) fixedly connected inside the second fixed seat (213), a fourth gear (215) fixedly connected to the output end of the second motor (214), a rotating seat (216) rotatably connected to the second fixed seat (213), a telescopic rod body (217) fixedly connected to the rotating seat (216), a first slider (218) fixedly connected to one end of the telescopic rod body (217), a correction plate body (219) set on the first slider (218), and a snap-fit ​​assembly set on the first slider (218). The fourth gear (215) meshes with the rotating seat (216). The second motor (214) drives the fourth gear (215) to rotate. The rotation of the fourth gear (215) adjusts the rotation of the rotating seat (216). The third gear (27) drives the first slider (218) and the correction plate body (219) to move.

5. The shape correction device for plastic pipe production according to claim 4, characterized in that: The second fixed seat (213) has a limiting groove at the relative position of the rotating seat (216), and the rotating seat (216) is rotatably connected to the groove.

6. The shape correction device for plastic pipe production according to claim 1, characterized in that: The snap-fit ​​assembly includes a fixed shell (31) fixedly connected to the telescopic rod body (217), a push button (32) slidably connected to the fixed shell (31), a fixed plate (33) fixedly connected to the push button (32), a connecting rod (34) fixedly connected to the fixed plate (33), a fixed rod (35) fixedly connected to the connecting rod (34), a second slider (36) slidably connected to the fixed shell (31), a snap-fit ​​block (37) fixedly connected to the second slider (36), a first spring (38) fixedly connected between the snap-fit ​​block (37) and the fixed shell (31), the snap-fit ​​block (37) snap-fit ​​connected to the correction plate body (219), the fixed rod (35) slidably connected to the second slider (36), and the fixed plate (33) and the connecting rod (34) are moved by pressing the push button (32). When the connecting rod (34) moves, the second slider (36) is moved by the fixed rod (35).

7. The shape correction device for plastic pipe production according to claim 6, characterized in that: The second slider (36) has a limiting groove at the relative position of the fixed rod (35), and the fixed rod (35) is slidably connected to the groove.

8. The shape correction device for plastic pipe production according to claim 6, characterized in that: The first slider (218) has a through groove, and the snap-fit ​​block (37) passes through the through groove and snaps onto the correction plate body (219).

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