Guide device for plastic pipeline production

Abstract

The utility model discloses a guiding device for plastic pipeline production, solves the problems that an existing guiding device is low in adjusting precision and prone to damaging the surface of a pipe, and provides the guiding device for plastic pipeline production. Comprising a base, a vertical guide assembly, a three-axis adjusting sliding table and a horizontal guide assembly. An upper guide wheel of the vertical guide assembly is driven by a screw hand wheel to ascend and descend, a three-axis sliding table of the horizontal guide assembly synchronously adjusts the positions of a roller and the vertical guide wheel, and the roller is distributed in a triangular shape to stably support a pipe. The guide wheel is of a conical structure and is provided with V-shaped anti-skid lines and a rubber buffer layer, and the roller is made of a polished stainless steel material; the screw hand wheel and the connecting block are in floating fit to compensate installation errors. The device realizes vertical and horizontal multi-directional accurate adjustment, prevents pipe slippage and surface damage, improves the production efficiency and the qualified rate of finished products, and is suitable for high-speed continuous production scenes.

Description

Technical Field

[0001] This utility model belongs to the field of plastic pipe production technology, and specifically relates to a guiding device for plastic pipe production. Background Technology

[0002] In PVC plastic pipe production, the guiding device is a core piece of equipment ensuring the stable operation of pipe forming, traction, and cutting processes. Traditional guiding devices typically use fixed guide wheels or simple adjustment structures, which have the following drawbacks: 1. Insufficient adjustment precision: When the pipe diameter changes, the distance between the upper and lower guide wheels needs to be manually adjusted, relying on experience and prone to skewing or jamming, resulting in scratches on the pipe surface or excessive ovality. 2. Traditional guide wheels are mostly cylindrical, providing insufficient radial constraint on the pipe, making them prone to slippage or deviation during high-speed traction, especially with poor guiding stability for large-diameter, thin-walled PVC pipes. 3. Horizontal and vertical guiding components are set up independently, with asynchronous adjustments, making it difficult to achieve precise alignment of the pipe's trajectory and affecting the processing accuracy of subsequent processes.

[0003] Existing pipe guiding devices (such as those disclosed in patent announcement number CN111497202B) do not solve the problem of multi-directional coordinated adjustment. Therefore, there is an urgent need for a device that combines high-precision adjustment, multi-directional coordinated guidance, and surface protection capabilities to meet the high-quality production requirements of PVC pipes. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a guiding device for the production of plastic pipes.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a guiding device for plastic pipe production, comprising: a base;

[0007] Vertical guide components, including:

[0008] Two fixed side plates are symmetrically fixed at both ends of the base along its length.

[0009] Two parallel lower guide wheels are rotatably connected between the two fixed side plates via a first rotating shaft;

[0010] Guide shafts are fixed at both ends of the base, and a lifting adjustment plate is fixed at the top of the guide shafts. A threaded through hole is provided in the middle of the lifting adjustment plate.

[0011] The screw handwheel has a central portion that passes through the threaded through hole and is threadedly engaged with the lifting adjustment plate, and an end portion that is floatingly connected to the bearing mounting plate via a screw connecting block.

[0012] A bearing mounting plate is slidably sleeved on the outside of the guide shaft via a linear bearing and is limited by a guide shaft support;

[0013] The upper guide wheel is rotatably connected to the bottom of the bearing mounting plate via a second rotating shaft, and the axial directions of the upper guide wheel and the lower guide wheel are parallel.

[0014] The three-axis adjusting slide is fixed to the outside of any fixed side plate;

[0015] Horizontal guide components, including:

[0016] Two parallel roller mounting plates are fixedly connected at their bottom to the top of the three-axis adjusting slide.

[0017] Between the two roller mounting plates are three rollers arranged in a triangular pattern and two vertical guide rollers;

[0018] The vertical guide wheel is rotatably connected to the end of the roller mounting plate via a guide wheel fixing plate, and the axis of the vertical guide wheel is perpendicular to the axis of the roller.

[0019] Preferably, the radial cross-section of the lower guide wheel, the upper guide wheel, and the vertical guide wheel is a symmetrical conical structure with a cone angle of 15° to 45°, and the cone surface is provided with V-shaped anti-slip texture with a depth of 0.5 to 1.2 mm.

[0020] Preferably, the roller is a 304 stainless steel roller with a surface roughness Ra of less than or equal to 0.8 micrometers, its surface is polished, and both ends are connected to the roller mounting plate by rolling bearings.

[0021] Preferably, the three-axis adjusting slide is an XYZ axis manual precision slide, including an X / Y axis threaded adjustment module and a Z axis threaded lifting mechanism. The lifting direction of the Z axis threaded lifting mechanism is parallel to the vertical guide wheel axis direction to synchronously adjust the feed height of the horizontal guide component.

[0022] Preferably, the screw connecting block has a rectangular groove inside, and the bottom of the screw handwheel has a boss that fits with the groove with a clearance of 0.1 to 0.3 mm, which is used to compensate for the axial deflection error between the screw handwheel and the bearing mounting plate.

[0023] Preferably, the inner side of the tapered structure of the lower guide wheel, the upper guide wheel and the vertical guide wheel is provided with an elastic buffer layer, which is a rubber layer with a Shore hardness of 60A to 80A and a thickness of 3 to 8mm.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] 1. The vertical guide assembly uses a screw handwheel to drive the bearing mounting plate to rise and fall along the guide shaft, and works with a linear bearing to achieve stable displacement of the upper guide wheel with an adjustment accuracy of ±0.1mm, adapting to rapid switching of different pipe diameters; the three-axis adjustment slide of the horizontal guide assembly uses X / Y / Z axis modules to synchronously adjust the position of the roller and the vertical guide wheel, ensuring that the pipe travel trajectory is aligned with the center line of the production line, reducing the problem of uneven wall thickness caused by skew.

[0026] 2. The tapered guide wheel with a cone angle of 15°-45° and the V-shaped anti-slip texture enhance the radial clamping force on the pipe and prevent slippage during high-speed traction; the rubber buffer layer on the inner side of the guide wheel can elastically fit the surface of the PVC pipe to avoid hard contact damage, while reducing traction vibration noise, which is especially suitable for thin-walled pipes with high surface smoothness requirements.

[0027] 3. The three rollers arranged in a triangle form a stable support surface. Combined with 304 stainless steel and a polished surface, they reduce frictional resistance and are suitable for high-speed traction conditions. The floating fit between the screw handwheel and the connecting block can compensate for installation errors, prevent thread jamming, and improve adjustment reliability. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0030] Figure 2 This is the front view of this utility model;

[0031] Figure 3 This is a side view of the present invention;

[0032] Figure 4 This is a top view of the present invention;

[0033] In the diagram: 1. Base; 2. Vertical guide assembly; 3. Three-axis adjustment slide; 4. Horizontal guide assembly; 21. Fixed side plate; 22. Lower guide wheel; 23. Guide shaft; 24. Lifting adjustment plate; 25. Guide shaft support; 26. Bearing mounting plate; 27. Screw handwheel; 28. Upper guide wheel; 29. ​​Screw connecting block; 31. X / Y axis threaded adjustment module; 32. Z axis threaded lifting mechanism; 41. Vertical guide wheel; 42. Guide wheel fixing plate; 43. Roller mounting plate; 44. Roller; 221. First rotating shaft; 271. Boss; 281. Second rotating shaft; 291. Groove. Detailed Implementation

[0034] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0035] In the attached diagram, all identical reference numerals refer to the same components.

[0036] Example 1: As Figure 1-4 As shown, this utility model provides a guiding device for plastic pipe production, including a base 1, a vertical guiding component 2, a three-axis adjusting slide 3, and a horizontal guiding component 4.

[0037] Base 1: A square frame is welded from Q235 steel plate, with the side plates 21 symmetrically fixed at both ends along the length direction using bolts;

[0038] Vertical guide component 2:

[0039] Two parallel lower guide wheels 22 are installed between the fixed side plates 21 via the first rotating shaft 221. The lower guide wheels 22 are symmetrical conical structures with a cone angle of 30° and V-shaped anti-slip texture with a depth of 0.8mm on the cone surface.

[0040] The base 1 has guide shafts 23 vertically welded to both ends, and a lifting adjustment plate 24 is welded to the top of the guide shafts 23. An M12 threaded through hole is opened in the center of the lifting adjustment plate 24.

[0041] The screw handwheel 27 is an M12 trapezoidal threaded rod, with a threaded through hole in the middle and threadedly engaged with the lifting adjustment plate 24, and the end is floatingly connected to the bearing mounting plate 26 through the screw connecting block 29.

[0042] A rectangular groove 291 is provided inside the screw connecting block 29, and a boss 271 is provided at the bottom of the screw handwheel 27 to fit the groove 291 with a clearance of 0.2mm;

[0043] The bearing mounting plate 26 is sleeved on the outside of the guide shaft 23 via a linear bearing, and the bottom is mounted with the upper guide wheel 28 via the second rotating shaft 281. The upper guide wheel 28 is parallel to the axis of the lower guide wheel 22, and the tapered structure is consistent with that of the lower guide wheel 22.

[0044] Three-axis adjustable slide 3: Select an XYZ axis manual precision slide, which is fixed to the outside of the right fixed side plate 21 by bolts. The lifting direction of its Z-axis threaded lifting mechanism 32 is parallel to the axis of the vertical guide wheel 41.

[0045] Horizontal guide component 4:

[0046] Two roller mounting plates 43 are fixed to the top of the three-axis adjusting slide 3 by bolts. Three rollers 44 are distributed in a triangle between the two mounting plates 43. The rollers 44 are polished 304 stainless steel tubes with a surface roughness Ra=0.6μm, and both ends are connected to the roller mounting plates 43 by deep groove ball bearings.

[0047] Vertical guide wheels 41 are installed at both ends of the roller mounting plate 43 via guide wheel fixing plates 42. The vertical guide wheels 41 are symmetrical conical structures with a cone angle of 25°, and the inner side is fitted with a 3mm thick rubber buffer layer with a Shore hardness of 70A.

[0048] The method of using this utility model is as follows:

[0049] 1. Adjusting the vertical guide assembly 2: Rotate the screw handwheel 27 to drive the bearing mounting plate 26 to rise and fall along the guide shaft 23, so that the distance between the upper guide wheel 28 and the lower guide wheel 22 matches the diameter of the pipe;

[0050] 2. Adjust the horizontal guide assembly 4: Adjust the horizontal position of the roller 44 by using the X / Y axis module 31 of the three-axis adjusting slide 3 and the Z axis module 32 to adjust the height of the vertical guide wheel 41 so that the center line of the pipe is aligned with the production line;

[0051] 3. When pulling the pipe, the V-shaped anti-slip texture of the tapered guide wheels 22, 28, and 41, together with the rubber buffer layer, clamps the pipe, and the roller 44 provides low-friction support to prevent surface scratches.

[0052] Example 2: For the production of large-diameter PVC pipes, the cone angle of the lower guide wheel 22, the upper guide wheel 28 and the vertical guide wheel 41 is increased to 45°, the depth of the V-shaped anti-slip texture is 1.0mm, the thickness of the rubber buffer layer is 5mm, and the rest of the structure is the same as in Example 1. It is suitable for high-stability guidance of large-diameter thin-walled PVC pipes (such as Φ300-600mm) to prevent pipe deformation and surface indentation.

[0053] This utility model is a guiding device for the production of plastic pipes, covering small to large PVC pipe production scenarios. It solves the problems of rough adjustment and easy damage to pipes caused by traditional guiding devices, and significantly improves production efficiency and finished product qualification rate.

[0054] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A guide device for plastic pipe production, characterized in that, It includes: Base (1); vertical guide assembly (2), including: two fixed side plates (21) symmetrically fixed to the length direction of the base (1); two parallel lower guide wheels (22) rotatably connected between the two fixed side plates (21) through a first rotating shaft (221); guide shaft (23) fixed to both ends of the base (1), the top of the guide shaft (23) is fixed with a lifting adjusting plate (24), the middle of the lifting adjusting plate (24) is provided with a threaded hole; screw hand wheel (27), wherein the middle part penetrates through the threaded hole and is threadedly connected with the lifting adjusting plate (24), and the end part is connected with the bearing mounting plate (26) through the screw connecting block (29) and the floating connection; bearing mounting plate (26), which is slidably sleeved on the outside of the guide shaft (23) through a linear bearing, and is limited by a guide shaft support (25); upper guide wheel (28), rotatably connected to the bottom of the bearing mounting plate (26) through a second rotating shaft (281), and the axis direction of the upper guide wheel (28) is parallel to that of the lower guide wheel (22); three-axis adjustment sliding table (3), fixed to the outside of any fixed side plate (21); horizontal guide assembly (4), comprising: two parallelly arranged drum mounting plates (43), the bottom of which is fixedly connected with the top of the three-axis adjustment sliding table (3), and between the two drum mounting plates (43) are provided with three drums (44) and two vertical guide wheels (41) in a triangular distribution; the vertical guide wheel (41) is rotatably connected to the end of the drum mounting plate (43) through a guide wheel fixing plate (42), and the axis of the vertical guide wheel (41) is perpendicular to the axis of the drum (44).

2. A guide device for plastic pipe production according to claim 1, characterized in that, The radial section of the lower guide wheel (22), the upper guide wheel (28) and the vertical guide wheel (41) is a symmetric conical structure with a conical angle of 15°-45°, and the conical surface is provided with a V-shaped anti-skid pattern with a depth of 0.5-1.2mm.

3. The guide device for plastic pipe production according to claim 1, characterized in that, The drum (44) is a 304 stainless steel drum with a surface roughness Ra≤0.8μm, the surface of which is polished, and the two ends of which are connected with the drum mounting plate (43) through rolling bearings.

4. The guide device for plastic pipe production according to claim 1, characterized in that, The three-axis adjustment sliding table (3) is an XYZ-axis manual precision sliding table, which comprises an X / Y-axis threaded adjustment module (31) and a Z-axis threaded lifting mechanism (32), and the lifting direction of the Z-axis threaded lifting mechanism (32) is parallel to the axis direction of the vertical guide wheel (41), so as to synchronously adjust the feeding height of the horizontal guide assembly (4).

5. The guide device for plastic pipe production according to claim 1, characterized in that, The screw connecting block (29) is internally provided with a rectangular groove (291), the bottom of the screw hand wheel (27) is provided with a boss (271) which is gap-fitted with the groove (291), and the gap is 0.1-0.3mm, which is used for compensating the axial deflection error of the screw hand wheel (27) and the bearing mounting plate (26).

6. The guide device for plastic pipe production according to claim 2, characterized in that, The inside of the conical structure of the lower guide wheel (22), the upper guide wheel (28) and the vertical guide wheel (41) is provided with an elastic buffer layer, and the elastic buffer layer is a rubber layer with a Shore hardness of 60A-80A and a thickness of 3-8mm.

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