A pipe sizing apparatus

Abstract

The utility model belongs to pipe material preparation equipment field discloses a kind of pipe shaping equipment, comprising: support frame, heat dissipation frame and temperature insulation cotton frame;The heat dissipation frame is slidably connected in the first runner, the temperature insulation cotton frame is slidably connected in the second runner, the outer peripheral wall of the support frame is equipped with the through-hole corresponding with the first runner, the rectangular slot corresponding with the second runner;Wherein, the trajectory of the first runner is set as: from left to right along annular frame circumferential direction, groove body radial position gradually close to the center;The trajectory of the second runner is reversely symmetrical with the first runner, heat dissipation frame is radially pasted to pipe mouth inner wall in cooling shaping stage, and heat on pipe mouth is transferred to heat dissipation frame by direct heat conduction, while after pipe mouth temperature reduces, temperature insulation cotton frame moves to the side close to pipe mouth inner wall, and radial supporting force generated by temperature insulation cotton frame under pressure helps to reduce the deformation of caliber retraction caused by heat shrinkage, to improve pipe mouth roundness retention ability.

Description

Technical Field

[0001] This disclosure pertains to the field of pipe manufacturing equipment, specifically relating to a pipe shaping device. Background Technology

[0002] PVC pipes, or polyvinyl chloride pipes, are manufactured by axially and circumferentially stretching rigid polyvinyl chloride pipes. Currently, PVC pipes are widely used in liquid transportation. To reduce costs and ensure good sealing performance at the joints between pipe fittings, PVC pipes are not joined with connectors. Instead, the pipe ends are made into flared shapes. Existing PVC pipe flaring equipment typically heats the part to be flared to a thermoplastic state, then inserts a flaring mold into that end. As the flaring mold moves along the axial direction of the PVC pipe, it squeezes the pipe, causing it to expand outward to form a flared shape. Finally, it is cooled and shaped.

[0003] However, in a pipe cooling and shaping device with application number CN219044118U, water is sprayed onto the outer surface of the PVC pipe through a rotating nozzle, and then the internal heat dissipation component cools and shapes the inside of the PVC pipe. The PVC pipe is cooled and shaped as a whole through the combined action of the internal heat dissipation component and the upper heat dissipation pipe. However, due to the thermal expansion and contraction effect, the pipe tends to shrink inward during cooling and shaping, making it difficult to suppress shrinkage deformation. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this disclosure is to provide a pipe shaping device that solves the problem that, due to the thermal expansion and contraction effect, the pipe opening shrinks inward during the cooling and shaping of the pipe, and the lack of support on the inside of the pipe opening makes it difficult to suppress the shrinkage and deformation of the pipe opening during the cooling process.

[0005] The objective of this disclosure can be achieved through the following technical solutions:

[0006] A pipe shaping device includes: a support frame, a heat dissipation frame, and a heat insulation cotton frame;

[0007] The inner side of the support frame is provided with a ring frame that rotates coaxially via bearings. The inner peripheral wall of the ring frame is provided with multiple first and second sliding grooves, which are symmetrically distributed around the center of the ring frame.

[0008] A heat dissipation frame is slidably connected in the first slide groove, and a heat insulation cotton frame is slidably connected in the second slide groove. The outer peripheral wall of the support frame is provided with a through hole corresponding to the first slide groove and a rectangular groove corresponding to the second slide groove.

[0009] The heat dissipation frame passes through the through hole and its end extends into the first sliding groove; the heat insulation cotton frame passes through the rectangular groove and its end extends into the second sliding groove.

[0010] A water-cooling assembly is provided between the multiple heat sinks;

[0011] The trajectory of the first chute is set as follows: from left to right along the circumference of the ring frame, the radial position of the chute gradually approaches the center of the circle; the trajectory of the second chute is symmetrical to the first chute in the opposite direction.

[0012] In some disclosures, an annular protrusion is fixed to the outer side of the annular frame, and an annular groove adapted to the annular protrusion is fixed to the inner side of the support frame.

[0013] In some disclosures, the heat sink includes a heat sink and a first guide rod. The heat sink is slidably disposed on the inner side of the rectangular groove, and the bottom of the heat sink is fixed with the first guide rod, and the end of the first guide rod is slidably disposed with the first groove.

[0014] In some disclosures, a limit block is fixed to the end of the first guide rod.

[0015] In some disclosures, a servo motor is coaxially mounted on the inner side of the ring frame.

[0016] In some disclosures, the water-cooling assembly includes a support shell and water-cooling pipes. The support shell is coaxially arranged on the inner side of the support frame, and the water-cooling pipes are arranged around the inner side of the support shell, with the water-cooling pipes fitting against the inner wall of the support shell.

[0017] In some disclosures, the heat sink also includes a heat-conducting plate, and the lower end face of the heat sink is fixed with the heat-conducting plate, and the upper end face of the heat-conducting plate is adapted to the outer bottom end face of the support shell.

[0018] In some disclosures, the insulation frame includes insulation cotton and a second guide rod, with insulation cotton surrounding the outer side of the support frame and the lower end of the insulation cotton fixed to the second guide rod.

[0019] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0020] A fixed connection refers to a connection in which parts or components are fixed in place and there is no relative movement between them;

[0021] A rotating connection is a connection between parts that allows the parts to rotate relative to each other.

[0022] Threaded connections are a type of detachable fixed connection with advantages such as simple structure, reliable connection, and convenient assembly and disassembly. They are widely used in mechanical engineering and connection structure fields.

[0023] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0024] The beneficial effects of this disclosure are:

[0025] 1. During the cooling and shaping stage, the heat sink is radially attached to the inner wall of the pipe opening. The heat is transferred from the pipe opening to the heat sink through direct heat conduction. At the same time, after the pipe opening temperature decreases, the heat insulation cotton frame moves to the side closer to the inner wall of the pipe opening. The radial support force generated by the pressure of the heat insulation cotton frame helps to reduce the diameter shrinkage deformation caused by thermal shrinkage, thereby improving the ability to maintain the roundness of the pipe opening.

[0026] 2. The radial reverse linkage between the heat sink and the support frame is achieved through the differential sliding groove mechanism, so that the heat sink and the insulation cotton can alternately contact the tube wall as needed: when the heat sink moves outward, direct heat conduction is achieved, and when the insulation cotton frame moves inward, an insulation gap is formed; when moving in the opposite direction, the insulation cotton supports the tube wall and the heat sink disengages from contact; this linkage design helps to simplify the drive structure and improves the positioning reliability through the self-locking characteristics of the motion pair. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this disclosure;

[0029] Figure 2 This is an embodiment of the present disclosure. Figure 1 A schematic diagram of the exploded structure;

[0030] Figure 3 This is a front view schematic diagram of an embodiment of this disclosure;

[0031] Figure 4 This is a schematic diagram of the overall structure from another perspective of an embodiment of this disclosure;

[0032] Figure 5 This is a schematic diagram of the overall structure of the heat sink according to an embodiment of the present disclosure.

[0033] In the diagram: 1. Support frame; 101. Through hole; 102. Rectangular groove; 103. Annular groove; 2. Annular frame; 21. Annular protrusion; 22. First sliding groove; 23. Second sliding groove; 3. Heat sink frame; 31. Heat sink; 32. First guide rod; 33. Heat conducting plate; 321. Limiting block; 4. Insulation cotton frame; 41. Insulation cotton; 42. Second guide rod; 5. Servo motor; 6. Support shell; 61. Water cooling pipe. Detailed Implementation

[0034] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0035] Based on the concept of this application, combined with Figures 1 to 5 This describes an embodiment of a pipe shaping device. Specifically, the pipe shaping device is constructed as a split structure, comprising three components: a support frame 1, a heat dissipation frame 3, and a thermal insulation frame 4. During the cooling and shaping stage, the thermal insulation frame 4 is radially pressed against the inner wall of the pipe opening, and the radial support force generated by the compression of its elastomer helps to reduce the diameter shrinkage deformation caused by thermal shrinkage.

[0036] Please refer to Figures 1 to 5 A pipe shaping device, comprising: a support frame 1, a heat dissipation frame 3, and a heat insulation cotton frame 4;

[0037] A ring frame 2 is coaxially rotatable on the inner side of the support frame 1 via bearings. Multiple first sliding grooves 22 and second sliding grooves 23 are opened through the inner peripheral wall of the ring frame 2. The first sliding grooves 22 and second sliding grooves 23 are symmetrically distributed around the center of the ring frame 2.

[0038] The heat dissipation frame 3 is slidably connected in the first slide groove 22, and the heat insulation cotton frame 4 is slidably connected in the second slide groove 23. The outer peripheral wall of the support frame 1 is provided with a through hole 101 corresponding to the first slide groove 22 and a rectangular groove 102 corresponding to the second slide groove 23.

[0039] The heat sink 3 passes through the through hole 101 and its end extends into the first sliding groove 22; the heat insulation cotton 4 passes through the rectangular groove 102 and its end extends into the second sliding groove 23.

[0040] A water-cooling component is arranged between multiple heat sinks 3;

[0041] The trajectory of the first slide groove 22 is set as follows: from left to right along the circumference of the ring frame 2, the radial position of the groove gradually approaches the center of the circle; the trajectory of the second slide groove 23 is symmetrical to the first slide groove 22 in the opposite direction.

[0042] When in use, the pipe opening is first heated and softened, and then the pipe opening is deformed by extrusion. The deformed part is then inserted into the inside of the pipe shaping equipment.

[0043] The heat sink 3 has a through hole 101 in the middle of the support frame 1, and the end of the heat sink 3 is inserted into the first sliding groove 22. The movement path of the end of the heat sink 3 is the same as that of the first sliding groove 22. The insulation cotton frame 4 has a rectangular hole 102 in the middle, and the end of the insulation cotton frame 4 is inserted into the second sliding groove 23, so that the movement path of the insulation cotton 41 is the same as that of the second sliding groove 23. The two ends of the first sliding groove 22 are oriented from left to right. When the left end of the first sliding groove 22 moves away from the center of the annular frame 2, it moves closer to the center of the annular frame 2. The direction of the second sliding groove 23 is opposite to that of the first sliding groove 22. When the annular frame 2 rotates coaxially around its center, the heat sink 3 slides from the left end of the first sliding groove 22 to the right end of the first sliding groove 22. At the same time, the annular frame 2 is restricted by the through hole 101, so that the heat sink 3 can only move along the central axis of the through hole 101. As the ring frame 2 rotates, the heat insulation cotton frame 4 slides along the inner wall of the annular groove 103. Since the direction of the second sliding groove 23 is opposite to that of the first sliding groove 22, when the ring frame 2 rotates, the heat dissipation frame 3 moves away from the center of the ring frame 2 along the through hole 101 and the first sliding groove 22 until the end of the heat dissipation fin 31 is in contact with the inner wall of the pipe. Meanwhile, the heat insulation cotton frame 4 moves closer to the ring frame 2, which increases the gap between the pipe opening and the heat insulation cotton 41. At this time, part of the heat at the pipe opening is directly transferred to the heat dissipation frame 3 through heat conduction with the heat dissipation fin 31. With the gap between the heat insulation cotton frame 4 and the pipe wall, part of the heat at the pipe opening is transferred to the air between the heat insulation cotton frame 4 and the pipe wall. Part of this air contacts the side wall of the heat dissipation fin 31 and is transferred to the heat dissipation fin 31. Compared with the heat insulation cotton frame 4 directly contacting the pipe wall, this increases the contact area between the heat dissipation fin 31 and the inner side of the pipe.

[0044] Meanwhile, after the temperature inside the pipe opening decreases, the annular frame 2 is reversed, causing the heat dissipation frame 3 to slide towards the side closer to the center of the annular frame 2, while the insulation cotton frame 4 slides away from the center of the annular frame 2 until the outer wall of the insulation cotton 41 is in contact with the inner wall of the pipe. The outer end face of the insulation cotton frame 4 is made of a rigid material to improve the deformation resistance of the insulation cotton frame 4 and to provide support for the pipe opening through the resistance of the insulation cotton 41. This helps to reduce the situation where the pipe opening shrinks inward due to thermal expansion and contraction when the pipe opening is cooled and shaped.

[0045] Please refer to Figure 2An annular protrusion 21 is fixed to the outer side of the ring frame 2, and an annular groove 103 adapted to the annular protrusion 21 is fixed to the inner side of the support frame 1. In use, the annular protrusion 21 is inserted into the annular groove 103. When the ring frame 2 rotates, the annular protrusion 21 slides along the annular groove 103. The annular protrusion 21 is inserted into the annular groove 103, and the annular groove 103 applies axial constraint to the ring frame 2, so that the ring frame 2 only rotates. The annular groove 103 helps to improve the stability of the ring frame 2.

[0046] Please refer to Figure 2 and Figure 5 The heat sink 3 includes a heat sink 31 and a first guide rod 32. The heat sink 31 is slidably disposed on the inner side of the rectangular groove 102, and the first guide rod 32 is fixed at the bottom of the heat sink 31. The end of the first guide rod 32 is slidably disposed with the first sliding groove 22.

[0047] By setting multiple heat sinks 3 to make uniform contact with the inner wall of the pipe opening, the uniformity of heat dissipation at the pipe opening is improved. At the same time, the multiple heat sinks 31 arranged around the pipe opening can also provide support for the pipe opening, thereby further improving the stability of the pipe opening.

[0048] Please refer to Figure 2 and Figure 5 A limiting block 321 is fixed to the end of the first guide rod 32. The limiting block 321 applies axial restriction to the first guide rod 32 and the heat sink 3 to improve the stability of the movement of the heat sink 3.

[0049] In use, the first guide rod 32 is inserted into the first slide groove 22, and the heat sink 31 is inserted into the rectangular groove 102 on the support frame 1. The rectangular groove 102 restricts the circumferential rotation of the heat sink 31, which helps to improve the stability of the movement of the heat sink frame 3.

[0050] Please refer to Figure 1 A servo motor 5 is coaxially mounted on the inner side of the ring frame 2.

[0051] In use, the servo motor 5 drives the ring frame 2 to rotate coaxially. At the same time, the servo motor 5 and the support frame 1 can be fixed to the external machine tool to provide stable support for the servo motor 5 and the support frame 1. The ring frame 2 is rotatably connected to the support frame 1, so that when the output end of the servo motor 5 rotates, it drives the ring frame 2 to rotate coaxially. The forward and reverse rotation of the servo motor 5 drives the ring frame 2 to rotate forward and reverse, thereby changing the contraction and outward convexity of the heat sink 3 and the insulation cotton frame 4.

[0052] Please refer to Figure 1 and Figure 2 The water-cooling assembly includes a support shell 6 and a water-cooling pipe 61. The support shell 6 is coaxially arranged on the inner side of the support frame 1, and the water-cooling pipe 61 is arranged around the inner side of the support shell 6, and the water-cooling pipe 61 is attached to the inner wall of the support shell 6.

[0053] A cooling fan and a water pump are installed on the side of the water cooling pipe 61 away from the support shell 6. The water pump delivers the cooled water from the cooling fan to the support shell 6, thereby exchanging the water temperature inside the support shell 6 with the water temperature at the cooling fan, and thus cooling the temperature around the support shell 6 and on the heat sink 3.

[0054] Please refer to Figure 5 The heat sink 3 also includes a heat-conducting plate 33, and the heat-conducting plate 33 is fixed on the lower end face of the heat sink 31. The upper end face of the heat-conducting plate 33 is adapted to the outer bottom end face of the support shell 6.

[0055] In use, when the ring frame 2 rotates counterclockwise, it pushes the heat sink 31 to move outward along the rectangular groove 102. When the heat sink 31 contacts the inner wall of the tube, the heat on the tube is transferred to the heat sink 31 through direct and indirect heat conduction, and then transferred to the heat conduction plate 33 through the heat sink 31. The outer wall of the heat conduction plate 33 is in contact with the outer bottom surface of the support shell 6. The heat conduction plate 33 increases the contact area between the heat sink 31 and the support shell 6, which is conducive to better transferring the heat on the heat conduction plate 33 to the water cooling pipe 61 on the water cooling device.

[0056] Please refer to Figure 4 The insulation cotton frame 4 includes insulation cotton 41 and a second guide rod 42. The insulation cotton 41 is arranged around the outside of the support frame 1, and the lower end of the insulation cotton 41 is fixed with the second guide rod 42.

[0057] In use, the second guide rod 42 is installed through the through hole 101. The through hole 101 can restrict the movement of the second guide rod 42 in the axial direction of the ring frame 2. When the ring frame 2 rotates, it drives the second guide rod 42 to slide along the second slide groove 23, causing the insulation cotton 41 and the heat sink 31 to move in opposite directions. Through the cooperation of the second guide rod 42 and the second slide groove 23, the movement path of the insulation cotton 41 is changed.

[0058] The following description, in conjunction with the accompanying drawings and embodiments, provides a further explanation of the pipe shaping equipment provided by this utility model.

[0059] After the flared pipe is inserted into the equipment, the servo motor 5 is started, driving the ring frame 2 to rotate. This causes the first guide rod 32 to move radially away from the center along the first slide groove 22, pushing the heat sink 31 to adhere to the inner wall of the pipe. Simultaneously, the second guide rod 42 moves radially towards the center along the second slide groove 23, forming an air gap between the insulation cotton 41 and the pipe wall. Heat from the pipe opening is directly conducted through the heat sink 31 and indirectly conducted through the air gap to the heat conducting plate 33, and then transferred to the water-cooled pipe 61 via the support shell 6. When the pipe opening temperature decreases, the servo motor 5 reverses, driving the ring frame 2 to rotate in the opposite direction, causing the heat sink 31 to detach from the pipe wall. At the same time, the insulation cotton 41 moves to adhere to the pipe wall, providing radial support. The water-cooling assembly uses a water pump to deliver cooling water from the cooling fan to the water-cooled pipe 61 to achieve heat exchange circulation.

[0060] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of this disclosure. Those skilled in the art should understand that this disclosure is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this disclosure. Various changes and modifications can be made to this disclosure without departing from its spirit and scope, and all such changes and modifications fall within the scope of this disclosure as claimed.

Claims

1. A pipe shaping device, characterized in that, include: Support frame (1), heat dissipation frame (3) and insulation cotton frame (4); The inner side of the support frame (1) is provided with a ring frame (2) that rotates coaxially through a bearing. The inner peripheral wall of the ring frame (2) is provided with a plurality of first sliding grooves (22) and second sliding grooves (23). The first sliding grooves (22) and second sliding grooves (23) are symmetrically distributed around the center of the ring frame (2). A heat dissipation frame (3) is slidably connected in the first slide groove (22), and a heat insulation cotton frame (4) is slidably connected in the second slide groove (23). The outer peripheral wall of the support frame (1) is provided with a through hole (101) corresponding to the first slide groove (22) and a rectangular groove (102) corresponding to the second slide groove (23). The heat dissipation frame (3) passes through the through hole (101) and its end extends into the first sliding groove (22); the heat insulation cotton frame (4) passes through the rectangular groove (102) and its end extends into the second sliding groove (23); A water-cooling assembly is provided between the plurality of heat sinks (3); The trajectory of the first chute (22) is set as follows: from left to right along the circumference of the ring frame (2), the radial position of the chute gradually approaches the center of the circle; the trajectory of the second chute (23) is symmetrical to the first chute (22) in the opposite direction.

2. The pipe shaping equipment according to claim 1, characterized in that, The outer side of the ring frame (2) is fixed with an annular protrusion (21), and the inner side of the support frame (1) is fixed with an annular groove (103) that matches the annular protrusion (21).

3. The pipe shaping equipment according to claim 1, characterized in that, The heat sink (3) includes a heat sink (31) and a first guide rod (32). The heat sink (31) is slidably disposed on the inner side of the rectangular groove (102), and the bottom of the heat sink (31) is fixed with the first guide rod (32), and the end of the first guide rod (32) is slidably disposed with the first sliding groove (22).

4. The pipe shaping equipment according to claim 3, characterized in that, A limit block (321) is fixed at the end of the first guide rod (32).

5. The pipe shaping equipment according to claim 1, characterized in that, A servo motor (5) is coaxially mounted on the inner side of the ring frame (2).

6. The pipe shaping equipment according to claim 1, characterized in that, The water-cooling assembly includes a support shell (6) and a water-cooling pipe (61). The support shell (6) is coaxially arranged on the inner side of the support frame (1), and the water-cooling pipe (61) is arranged around the inner side of the support shell (6), and the water-cooling pipe (61) is attached to the inner wall of the support shell (6).

7. The pipe shaping equipment according to claim 3, characterized in that, The heat sink (3) also includes a heat-conducting plate (33), and the heat sink (31) has a heat-conducting plate (33) fixed on its lower end surface. The upper end surface of the heat-conducting plate (33) is adapted to the outer bottom end surface of the support shell (6).

8. The pipe shaping equipment according to claim 7, characterized in that, The insulation cotton frame (4) includes insulation cotton (41) and a second guide rod (42). The insulation cotton (41) is arranged around the outside of the support frame (1), and the second guide rod (42) is fixed at the lower end of the insulation cotton (41).

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