High-temperature nylon pipeline flexible clamping structure

Abstract

This application provides a flexible clamping structure for high-temperature nylon tubing, belonging to the technical field of nylon tubing processing. It is used to install on a tubing clamping fixture to clamp and fix high-temperature nylon tubing. The flexible clamping structure includes two contoured clamping blocks and two sets of elastic clamping members. The two contoured clamping blocks are respectively installed on a driving component that moves relative to each other in the tubing clamping fixture. The opposing surfaces of the two contoured clamping blocks each have a semi-annular groove for accommodating the high-temperature nylon tubing. The two sets of elastic clamping members correspond one-to-one with the two contoured clamping blocks and are disposed within the semi-annular grooves. The inner sides of the two sets of elastic clamping members are used to contact the high-temperature nylon tubing, and the elastic modulus of the elastic clamping members is smaller than that of the high-temperature nylon tubing. This application uses elastic clamping members with a smaller elastic modulus to contact the surface of the nylon tubing. The static friction force generated by the elastic deformation caused by pressure on the nylon tubing surface ensures both clamping stability and a residue-free clamping effect.

Description

Technical Field

[0001] This application belongs to the technical field of nylon tube processing, and more specifically, relates to a flexible clamping structure for high-temperature nylon tubes. Background Technology

[0002] The development of automated forming technology in the field of nylon tube forming has become increasingly mature in recent years. Its main processing flow is as follows: the tube material to be processed is first continuously fed into the heating chamber through the feeding mechanism and heated to about 150°C. When the tube material is sent out of the heating chamber and reaches the die head position, the tube bending mechanism of the die head performs tube bending, tilting and bending, cooling and cutting actions on the nylon tube material.

[0003] The tooling for performing the pipe bending action includes a pipe clamping fixture, a bending wheel (die), and a bending guide wheel. During operation, after the heated nylon pipe extends out of the heating chamber, the pipe clamping fixture holds the nylon pipe in place, preventing it from moving back and forth or swaying during the bending process, thus ensuring the consistency of the nylon pipe's length and spatial angle. The bending guide wheel is controlled by a PLC and driven by a servo motor and coupling to execute the predetermined bending angle, pressing the nylon pipe into the groove of the bending wheel (die), thereby realizing the pipe bending action.

[0004] The clamping structure in the pipe clamping fixture consists of two opposing metal clamping plates. The opposing surfaces of the two metal clamping plates have annular grooves for accommodating and clamping nylon pipes. The two metal clamping plates are respectively mounted on the driving component that moves relative to each other in the pipe clamping fixture. The driving component on the pipe clamping fixture drives the two metal clamping plates to move closer or further apart.

[0005] However, since the nylon tube is clamped at a high temperature of around 150°C, the elastic modulus of the nylon tube decreases significantly at high temperatures. Even if it is clamped by a metal clamp with the same outer diameter as the nylon tube, it is easy to cause clamping marks, which affects the processing quality of the nylon tube. Utility Model Content

[0006] The purpose of this application is to provide a flexible clamping structure for high-temperature nylon tubing, so as to solve the technical problem that metal clamps in the prior art are prone to causing clamp marks on nylon tubing when clamping and fixing it under high temperature conditions.

[0007] To achieve the above objectives, the technical solution adopted in this application is: to provide a flexible clamping structure for high-temperature nylon pipes, used for installation on pipe clamping fixtures to clamp and fix high-temperature nylon pipes, wherein the flexible clamping structure for high-temperature nylon pipes includes: Two contouring clamps are respectively installed on the driving component that moves relative to each other in the tube clamping fixture. The opposing surfaces of the two contouring clamps are provided with semi-annular grooves for accommodating the high-temperature nylon tube. Two sets of elastic clamping members, corresponding one-to-one with the two contoured clamping blocks, are disposed within the semi-annular groove; and The inner sides of the two sets of elastic clamping members are used to contact the high-temperature nylon tube, and the elastic modulus of the elastic clamping members is less than that of the high-temperature nylon tube. In conjunction with the above technical solutions, in one possible implementation, the flexible clamping structure for high-temperature nylon tubing further includes: The two positioning tubes correspond one-to-one with the two contour clamping blocks and are in the shape of semi-circular tubes. One end of the positioning tube is coaxially fixed in the corresponding semi-annular groove; the elastic clamping member is set on the inner wall of the corresponding positioning tube.

[0008] In one possible implementation, based on the above technical solutions, multiple equidistant positioning grooves are formed on the end faces of the two halves of the positioning tube, and the positioning grooves are opened on the side facing the axis of the positioning tube; the elastic clamping member includes: Multiple elastic strips correspond one-to-one with multiple positioning grooves and are inserted into the positioning grooves; the elastic strips protrude from the positioning grooves on the side facing the axis of the positioning tube and are used to contact the high-temperature nylon tube.

[0009] In conjunction with the above technical solutions, in one possible implementation, the flexible clamping structure for high-temperature nylon tubing further includes: Multiple limiting bolts correspond one-to-one with multiple elastic strips. The limiting bolts are threadedly connected to the positioning tube, and one end is inserted into the positioning groove. One end of the elastic strip abuts against the inner end face of the positioning groove, and the other end abuts against the limiting bolt.

[0010] In one possible implementation, based on the above technical solutions, the elastic strip is a silicone strip.

[0011] In one possible implementation, based on the above technical solutions, both halves of the positioning tube end faces are coaxially provided with arc-shaped positioning grooves, and the positioning grooves are opened on the side facing the axis of the positioning tube; the elastic clamping member includes: Two flexible clamping plates correspond one-to-one with the two halves of the positioning tube and are inserted into the positioning groove; the flexible clamping plates protrude from the positioning groove on the side facing the axis of the positioning tube and are used to contact the high-temperature nylon tube.

[0012] In conjunction with the above technical solutions, in one possible implementation, the flexible clamping structure for high-temperature nylon tubing further includes: Multiple fixing bolts pass through the positioning tube from the outside of the positioning tube and are threadedly connected to the flexible clamping plate. One end of the flexible clamping plate abuts against the inner end face of the positioning groove, and the other end is used for threaded connection to the fixing bolt.

[0013] In one possible implementation, based on the above technical solutions, the flexible clamping plate is a polytetrafluoroethylene (PTFE) plate.

[0014] In one possible implementation, based on the above technical solutions, one of the conforming clamps has two vertically distributed first guide grooves on its inner side, and the other conforming clamp has two vertically distributed second guide grooves on its inner side, with the first guide grooves and second guide grooves facing each other; the high-temperature nylon tubing flexible clamping structure further includes: A spring is disposed within the first guide groove; A guide rod, fixed within the first guide groove and located inside the spring; and A guide tube is fixed in the second guide groove and is used for inserting the guide rod; When the spring is in a free state, one end of the spring is located outside the first guide groove and directly opposite the outer end face of the guide tube.

[0015] In one possible implementation, based on the above technical solutions, the corners of the inner wall of the positioning tube are all rounded.

[0016] The beneficial effects of the flexible clamping structure for high-temperature nylon tubing provided in this application are as follows: Compared with the prior art, when the driving component on the tubing clamping fixture drives the two contoured clamping blocks to approach each other, the elastic clamping components in the two semi-annular grooves contact the surface of the nylon tubing. At the same time, the elastic clamping component with a smaller elastic modulus deforms, and static friction is generated after it undergoes elastic deformation with the surface of the nylon tubing due to pressure. This can ensure the clamping stability of the nylon tubing and achieve the effect of non-marking clamping. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an overall schematic diagram of a flexible clamping structure for high-temperature nylon tubing provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the elastic clamping member provided in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of an elastic clamping member provided in another embodiment of this application; Figure 4 A cross-sectional view of the spring, guide rod, and guide tube provided in an embodiment of this application.

[0019] The labels for the attached figures are as follows: 1. Contouring clamp; 11. Semi-annular groove; 12. First guide groove; 13. Second guide groove; 2. Elastic clamping component; 21. Elastic strip; 22. Flexible clamping plate; 3. Limit bolts; 4. Positioning tube; 41. Positioning groove; 5. Fixing bolts; 6. Spring; 7. Guide rod; 8. Guide tube. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain this application and are not intended to limit this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] It should be further noted that the accompanying drawings and embodiments of this application mainly describe the concept of this application. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this application, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0023] The present application provides a description of a flexible clamping structure for high-temperature nylon tubing.

[0024] like Figure 1 and Figure 2As shown, one embodiment of this application provides a flexible clamping structure for high-temperature nylon pipes, which is installed on a pipe clamping fixture to clamp and fix the high-temperature nylon pipe. The flexible clamping structure for high-temperature nylon pipes includes two contoured clamping blocks 1 and two sets of elastic clamping members 2.

[0025] Two contouring clamps 1 are respectively mounted on the driving component that moves relative to each other in the pipe clamping fixture. The opposing surfaces of the two contouring clamps 1 are each provided with a semi-annular groove 11 for accommodating the high-temperature nylon pipe. Two sets of elastic clamping components 2 correspond one-to-one with the two contouring clamps 1 and are disposed in the semi-annular grooves 11.

[0026] Among them, the inner sides of the two sets of elastic clamping members 2 are used to contact the high-temperature nylon tube, and the elastic modulus of the elastic clamping members 2 is less than the elastic modulus of the high-temperature nylon tube.

[0027] Specifically, the driving component in the pipe clamping fixture can be two driving cylinders driving two contour clamping blocks 1 to move relative to each other, or it can be a bidirectional screw module driving two contour clamping blocks 1 to move relative to each other.

[0028] This embodiment provides a flexible clamping structure for high-temperature nylon tubing. Compared with the prior art, when the driving component on the tubing clamping fixture drives the two contoured clamping blocks 1 to approach each other, the elastic clamping components 2 in the two semi-annular grooves 11 come into contact with the surface of the nylon tubing. At the same time, the elastic clamping components 2 with smaller elastic modulus deform, and static friction is generated after the elastic deformation of the nylon tubing surface due to pressure. This can ensure the clamping stability of the nylon tubing and achieve the effect of non-marking clamping.

[0029] like Figures 1 to 2 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The high-temperature nylon tubing flexible clamping structure also includes two half positioning tubes 4; the two half positioning tubes 4 correspond one-to-one with two contoured clamping blocks 1 and are in the shape of semi-circular tubes, with one end of the positioning tube 4 coaxially fixed in the corresponding semi-annular groove 11; the elastic clamping member 2 is set on the inner wall of the corresponding positioning tube 4.

[0030] Specifically, in this embodiment, the positioning tube 4 and the corresponding contour clamping block 1 are integrally formed.

[0031] The positioning tube 4 enhances the positioning accuracy of the high-temperature nylon tube and extends the length of the elastic clamping member 2, further improving the clamping stability of the elastic clamping member 2 on the high-temperature nylon tube.

[0032] like Figures 1 to 2 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The two halves of the positioning tube 4 have multiple equally spaced positioning grooves 41 on their end faces. The positioning grooves 41 are opened on one side facing the axis of the positioning tube 4. The elastic clamping member 2 includes multiple elastic strips 21. The multiple elastic strips 21 correspond one-to-one with the multiple positioning grooves 41 and are inserted into the positioning grooves 41. The elastic strips 21 protrude from the positioning grooves 41 on one side facing the axis of the positioning tube 4 and are used to contact the high-temperature nylon tube.

[0033] The equidistant distribution of multiple elastic strips 21 can apply clamping force to the high-temperature nylon tube more evenly, and the side of the elastic strip 21 will deform towards the positioning groove 41 when it exerts force on the high-temperature nylon tube, which can better adapt to the shape of the nylon tube and provide a more fitting clamping effect.

[0034] like Figures 1 to 2 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The high-temperature nylon tubing flexible clamping structure also includes multiple limiting bolts 3; the multiple limiting bolts 3 correspond one-to-one with multiple elastic strips 21, the limiting bolts 3 are threaded to the positioning tube 4, and one end is inserted into the positioning groove 41; wherein, one end of the elastic strip 21 abuts against the inner end face of the positioning groove 41, and the other end abuts against the limiting bolts 3.

[0035] By unscrewing the limiting bolt 3, the positioning strip can be pulled out from the positioning groove 41, which improves the ease of disassembly and replacement of the positioning strip, and facilitates the maintenance of the flexible clamping structure of the high-temperature nylon pipeline.

[0036] like Figures 1 to 2 As shown, based on the above embodiments, this application provides another specific embodiment as follows: the elastic strip 21 is a silicone strip.

[0037] Silicone strips have a relatively small elastic modulus, good elasticity and flexibility, and can adapt well to the changes in elastic modulus of high-temperature nylon tubes at high temperatures, effectively avoiding damage to the surface of the nylon tubes.

[0038] Because the pipe clamping fixture needs to repeatedly clamp the high-temperature nylon tube, and the nylon tube will release oil mist at high temperature, when the oil mist adheres to the metal clamp in the existing technology, the temperature of the metal clamp can easily exceed that of the high-temperature nylon tube, which may cause burns to the surface of the nylon tube.

[0039] The specific heat capacity of silicone strips is greater than that of metal materials. Therefore, when high-temperature nylon tubes are repeatedly clamped by silicone strips, their temperature will not exceed that of the high-temperature nylon tubes. Even if oil accumulates on the silicone strips, it will not cause burns to the nylon tubes.

[0040] refer to Figure 3In some possible embodiments, the positioning grooves 41 on the two halves of the positioning tube 4 are both arc-shaped and arranged opposite each other. In this embodiment, the elastic clamping member 2 includes two halves of flexible clamping plate 22; the two halves of flexible clamping plate 22 correspond one-to-one with the two halves of the positioning tube 4 and are inserted into the positioning groove 41; the flexible clamping plate 22 protrudes from the positioning groove 41 on the side facing the axis of the positioning tube 4 and is used to contact the high-temperature nylon tube.

[0041] The two flexible clamping plates 22 can better fit the outer surface of the high-temperature nylon tube, providing a wider clamping area and reducing the problem of local stress concentration; and when the flexible clamping plate 22 exerts pressure on the high-temperature nylon tube, the flexible clamping plate 22 will deform towards the positioning groove 41 to avoid clamping marks on the high-temperature nylon tube.

[0042] refer to Figure 3 Furthermore, the high-temperature nylon tubing flexible clamping structure also includes multiple fixing bolts 5; the fixing bolts 5 pass through the outside of the positioning tube 4 and are threadedly connected to the flexible clamping plate 22. One end of the flexible clamping plate 22 abuts against the inner end face of the positioning groove 41, and the other end is threadedly connected to the fixing bolts 5.

[0043] The flexible clamping plate 22 is inserted into the positioning groove 41, and then fixed in place by the fixing bolt 5. Similarly, the flexible clamping plate 22 can be pulled out by unscrewing the fixing bolt 5, which improves the ease of disassembly and replacement of the flexible clamping plate 22, and facilitates the maintenance of the flexible clamping structure for high-temperature nylon pipelines.

[0044] refer to Figure 3 Furthermore, the flexible clamping plate 22 is a polytetrafluoroethylene plate.

[0045] The smooth surface and low coefficient of friction of the PTFE sheet reduce friction and damage to the nylon tube surface when it comes into contact with it at high temperatures. Furthermore, the elastic modulus of the PTFE sheet decreases as its temperature rises due to the influence of the high-temperature nylon tube, thus minimizing the risk of indentation on the tube.

[0046] Furthermore, the PTFE sheet has a higher specific heat capacity than the silicone strip, providing better protection against burns from high-temperature nylon tubing.

[0047] like Figure 4 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: One of the contoured clamping blocks 1 has two vertically distributed first guide grooves 12 on its inner side, and the other contoured clamping block 1 has two vertically distributed second guide grooves 13 on its inner side. The first guide grooves 12 and the second guide grooves 13 are arranged opposite each other. The high-temperature nylon pipe flexible clamping structure also includes a spring 6, a guide rod 7 and a guide tube 8.

[0048] Spring 6 is disposed within the first guide groove 12. Guide rod 7 is fixed within the first guide groove 12 and located inside spring 6. Guide tube 8 is fixed within the second guide groove 13 and allows guide rod 7 to be inserted. When spring 6 is in its free state, one end of spring 6 is located outside the first guide groove 12 and faces the outer end face of guide tube 8.

[0049] During the process of the contouring clamps 1 approaching each other to clamp the nylon tube, the spring 6 can buffer the impact force between the contouring clamps 1, avoiding damage to the nylon tube due to excessive impact force. The cooperation of the guide rod 7 and the guide tube 8 ensures the accuracy and stability of the contouring clamps 1 during relative movement, allowing the two contouring clamps 1 to be aligned more precisely, improving the clamping accuracy and reliability.

[0050] like Figures 1 to 3 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The inner corners of the positioning tube 4 are all rounded.

[0051] The rounded corner structure can prevent scratches on the surface of the high-temperature nylon tube during clamping, which helps to improve the surface quality of the nylon tube and ensures that no defective products are produced due to scratches on the edges and corners during processing, thus further improving the product processing quality.

[0052] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

[0053] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0054] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A flexible clamping structure for high-temperature nylon tubing, used for mounting on a tubing clamping fixture to clamp and fix the high-temperature nylon tubing, characterized in that, The high-temperature nylon tubing flexible clamping structure includes: Two contouring clamps (1) are respectively installed on the driving component that moves relative to each other in the tube clamping fixture. The opposing surfaces of the two contouring clamps (1) are provided with semi-annular grooves (11) for accommodating the high-temperature nylon tube. Two sets of elastic clamping members (2) correspond one-to-one with the two contoured clamping blocks (1) and are disposed within the semi-annular groove (11); and The inner sides of the two sets of elastic clamping members (2) are used to contact the high-temperature nylon tube, and the elastic modulus of the elastic clamping members (2) is less than that of the high-temperature nylon tube.

2. The flexible clamping structure for high-temperature nylon tubing as described in claim 1, characterized in that, Also includes: Two half positioning tubes (4) correspond one-to-one with the two contour clamps (1) and are in the shape of a semi-circular tube. One end of the positioning tube (4) is coaxially fixed in the corresponding semi-annular groove (11); the elastic clamping member (2) is set on the inner wall of the corresponding positioning tube (4).

3. The flexible clamping structure for high-temperature nylon tubing as described in claim 2, characterized in that, The two halves of the positioning tube (4) are provided with a plurality of equally spaced positioning grooves (41), and the positioning grooves (41) are opened on one side facing the axis of the positioning tube (4). The elastic clamping member (2) includes: Multiple elastic strips (21) correspond one-to-one with multiple positioning grooves (41) and are inserted into the positioning grooves (41); the elastic strips (21) protrude from the positioning grooves (41) on one side facing the axis of the positioning tube (4) and are used to contact the high-temperature nylon tube.

4. The flexible clamping structure for high-temperature nylon tubing as described in claim 3, characterized in that, Also includes: Multiple limiting bolts (3) correspond one-to-one with multiple elastic strips (21). The limiting bolts (3) are threaded to the positioning tube (4) and one end is inserted into the positioning groove (41). One end of the elastic strip (21) abuts against the inner end face of the positioning groove (41), and the other end abuts against the limiting bolt (3).

5. The flexible clamping structure for high-temperature nylon tubing as described in claim 3, characterized in that, The elastic strip (21) is a silicone strip.

6. The flexible clamping structure for high-temperature nylon tubing as described in claim 2, characterized in that, Both halves of the positioning tube (4) have an arc-shaped positioning groove (41) coaxially formed on their end faces, and the positioning groove (41) is set to open on one side facing the axis of the positioning tube (4). The elastic clamping member (2) includes: Two flexible clamping plates (22) correspond one-to-one with the two positioning tubes (4) and are inserted into the positioning grooves (41); The flexible clamping plate (22) protrudes from the positioning groove (41) on one side facing the axis of the positioning tube (4) and is used to contact the high-temperature nylon tube.

7. The flexible clamping structure for high-temperature nylon tubing as described in claim 6, characterized in that, Also includes: Multiple fixing bolts (5) pass through the positioning tube (4) from the outside and are threadedly connected to the flexible clamping plate (22); One end of the flexible clamping plate (22) abuts against the inner end face of the positioning groove (41), and the other end is used for threaded connection to the fixing bolt (5).

8. The flexible clamping structure for high-temperature nylon tubing as described in claim 6, characterized in that, The flexible clamping plate (22) is a polytetrafluoroethylene plate.

9. A flexible clamping structure for high-temperature nylon tubing as described in any one of claims 1-8, characterized in that, One of the contour clamping blocks (1) has two vertically distributed first guide grooves (12) on its inner side, and the other contour clamping block (1) has two vertically distributed second guide grooves (13) on its inner side, with the first guide grooves (12) and the second guide grooves (13) facing each other; the high-temperature nylon pipe flexible clamping structure also includes: A spring (6) is disposed in the first guide groove (12); The guide rod (7) is fixed in the first guide groove (12) and located inside the spring (6); and The guide tube (8) is fixed in the second guide groove (13) and is used for the insertion of the guide rod (7); When the spring (6) is in a free state, one end of the spring (6) is located outside the first guide groove (12) and faces the outer end face of the guide tube (8).

10. A flexible clamping structure for high-temperature nylon tubing as described in any one of claims 2-8, characterized in that, The inner corners of the positioning tube (4) are all rounded.

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