Yarn stretching and shaping device

Abstract

The utility model provides a yarn stretching and shaping device, which relates to the field of yarn shaping and comprises a shaping box, a heating component is arranged on the inner side of the shaping box, the lower side of the heating component is connected with a base component, an adjusting cylinder and a pressing cylinder are arranged on one side of the heating component, and the heating component comprises an arc-shaped pipe. A heating ring is installed on the outer wall of the arc-shaped pipe, connecting blocks are arranged at the two ends of the arc-shaped pipe, the base assembly comprises a fixing base, a sliding block is connected to the lower end of the fixing base, a rotating handle lead screw is rotationally connected to one end of the fixing base, a fixing frame is connected to the upper end of an adjusting air cylinder, and a tension detection assembly is installed at the upper end of the fixing frame. According to the utility model, on the basis of not increasing the size of the sizing equipment, the heating path and time of the yarn are prolonged, and the yarn tension detection and adjustment effects are achieved.

Description

Technical Field

[0001] This utility model relates to the field of yarn setting technology, specifically to a yarn stretching and setting device. Background Technology

[0002] The production of polytetrafluoroethylene (PTFE) fiber involves multiple steps, such as raw material mixing, raw material maturation, pressing, degreasing, sintering and stretching, slitting and twisting, stretching and setting, and finished product winding. Currently, PTFE fiber is stretched and set in a drawing furnace. The furnace is equipped with electric heating tubes that heat the air, and then the PTFE fiber yarn passes straight through the furnace for heating and setting.

[0003] A search revealed existing technology (publication number: CN222332189U), which describes "a yarn stretching and setting device, belonging to the technical field of yarn processing equipment, including a setting furnace body, a perforation device, a guide tube, and a heating coil. The setting furnace body has at least one set of heating rollers at the end away from the guide tube, each set having three heating rollers. The bottoms of the two lower heating rollers are flush with the axis of the guide tube. Each heating roller has an inner hole in the middle. The heating rollers are rotatably mounted on the setting furnace body, and each heating roller's inner hole contains a heating tube. This invention, by setting a guide tube inside the setting furnace body, with a heating coil wound around its exterior, allows for initial heating and setting within the guide tube. Furthermore, by adding at least one set of heating rollers inside the setting furnace body, the yarn passes around the rollers and undergoes secondary heating and setting, resulting in better heat setting effect, increased heat setting efficiency, and reduced dry heat shrinkage rate of the yarn."

[0004] While existing yarn stretching and setting devices have achieved high heat setting efficiency, they still have some shortcomings: the existing yarn stretching and setting devices still require an increase in the length of the guide tube to accommodate the heating time as the yarn passes through, which in turn requires a longer setting furnace, increasing production costs and occupying more space. Secondly, the tension of the yarn during stretching is not detectable or adjustable, making it impossible to determine the yarn tension during stretching and setting, which in turn makes it difficult to guarantee the quality of the set yarn. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, a yarn stretching and setting device is provided to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a yarn stretching and setting device is provided, comprising: a setting box, a heating component provided inside the setting box, a base assembly connected to the lower side of the heating component, an adjusting cylinder and a pressing cylinder provided on one side of the heating component, the heating component including an arc-shaped tube, a heating coil installed on the outer wall of the arc-shaped tube, and connecting blocks provided at both ends of the arc-shaped tube, the base assembly including a fixed seat, a slider connected to the lower end of the fixed seat, and a screw rod rotatably connected to one end of the fixed seat, a fixed frame connected to the upper end of the adjusting cylinder, and a tension detection component installed on the upper end of the fixed frame.

[0007] Furthermore, the inner wall of the arc-shaped end of the arc-shaped tube is provided with a guide wheel assembly, and the inner wall of the arc-shaped tube is provided with a plug-in block. At the same time, a thermocouple mounting hole is opened in the tube wall of the arc-shaped tube.

[0008] Furthermore, the arc-shaped tube has a horizontal tube section at both ends, and the connecting block is fixed to the horizontal tube section. A reducing end is connected to the outer end of the horizontal tube, and a guide wheel is provided on the inner wall at the bend of the horizontal tube.

[0009] Furthermore, the upper side of the fixing seat is provided with an installation groove, and the bottom of the arc-shaped tube is placed in the installation groove. A bolt is screwed to the outside of the installation groove, and the slider is slidably connected to the sliding groove opened at the bottom of the shaping box.

[0010] Furthermore, the adjusting cylinder is installed on the lower side of the shaping box, and the piston rod of the adjusting cylinder slides through the bottom wall of the shaping box.

[0011] Furthermore, the tension detection assembly includes a sensor body mounted on the outer wall of the fixed frame, with a wiring terminal on the outer side of the sensor body and a rotating shaft on the inner end of the sensor body. The rotating shaft rotates through the fixed frame and a detection wheel is connected to the inner end of the rotating shaft.

[0012] Furthermore, the clamping cylinder is fixed to the top of the shaping box, and the lower end of the clamping cylinder is connected to the clamping block, which is located on the upper side of the detection wheel. At the same time, a heating roller is provided on one side of the clamping block.

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

[0014] 1. In use, first disassemble the connecting block to separate the arc tube into two asymmetrical parts. Then, pass the yarn through one of the tube parts of the arc tube with the guide wheel assembly and guide wheel. Place one end of the yarn into the groove of the detection wheel. At this time, start the clamping cylinder to drive the clamping block to move downward, thereby clamping one end of the yarn. Then, connect the other part of the arc tube with the part through which the yarn has passed. Then, connect them with the connecting block to form a complete S-shaped pipe structure. Then, fix the heating ring on the outer wall of the arc tube. After power is applied, the yarn inside the arc tube is heated. This extends the yarn heating path and time without increasing the overall length of the setting box, avoiding increased costs and occupying more space.

[0015] 2. During operation, the clamping block moves away from the detection wheel. The tension detection system, including the detection wheel, rotating shaft, and sensor body, allows for real-time monitoring of the yarn tension as it passes over the detection wheel. The sensor body then feeds the data back to the controller. The controller's internal microprocessor analyzes the data using an algorithm and compares it with preset parameters. The controller then determines whether to adjust the yarn tension, ensuring that the yarn tension is within a reasonable range during stretching and setting, thereby guaranteeing the yarn setting quality. Attached Figure Description

[0016] Figure 1 This is a schematic cross-sectional view of the shaping box according to an embodiment of the present invention.

[0017] Figure 2 This is a partial cross-sectional structural diagram of the heating component according to an embodiment of the present invention.

[0018] Figure 3 This is an embodiment of the present utility model. Figure 1 Schematic diagram of the structure at point A in the middle.

[0019] Figure 4 This is a side cross-sectional view of the tension detection component according to an embodiment of the present invention.

[0020] In the diagram: 1. Shaping box; 2. Heating assembly; 21. Arc tube; 22. Guide wheel assembly; 23. Heating coil; 24. Quick connector; 25. Thermocouple mounting hole; 26. Connecting block; 27. Guide wheel; 28. Variable diameter end; 3. Base assembly; 31. Screw; 32. Fixing seat; 33. Sliding block; 34. Slide groove; 4. Adjusting cylinder; 41. Fixing frame; 42. Tension detection assembly; 421. Sensor body; 422. Terminal; 423. Rotating shaft; 424. Detection wheel; 5. Clamping cylinder; 51. Clamping block; 6. Heating roller. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1 to 4 As shown, this utility model provides a yarn stretching and setting device, including: a setting box 1, a heating component 2 provided inside the setting box 1, a base component 3 connected to the lower side of the heating component 2, an adjusting cylinder 4 and a pressing cylinder 5 provided on one side of the heating component 2, the heating component 2 including an arc tube 21, a heating coil 23 installed on the outer wall of the arc tube 21, and connecting blocks 26 provided at both ends of the arc tube 21, the base component 3 including a fixed seat 32, a slider 33 connected to the lower end of the fixed seat 32, and a screw rod 31 rotatably connected to one end of the fixed seat 32, a fixed frame 41 connected to the upper end of the adjusting cylinder 4, and a tension detection component 42 installed on the upper end of the fixed frame 41.

[0023] In this embodiment, the inner and outer structures of the setting box 1 constitute the main structure of the yarn stretching and setting device involved in this application.

[0024] The shaping box 1 has guide tubes at both ends, and the inlet end of the arc tube 21 is connected to the guide tube, so that the yarn enters the arc tube 21 through the guide tube.

[0025] Specifically, the heating coil 23 is designed in the existing technology to be similar to the heating coil structure installed on the outside of the injection barrel of an injection molding machine. It is a segmented installation structure that can be heated by connecting to the mains power.

[0026] Specifically, the outer end of the screw rod 31 is connected to a handle, and the handle is located on the outside of the shaping box 1. The screw rod 31 is screwed through the box wall of the shaping box 1.

[0027] like Figure 1 and Figure 2 In the process, the inner wall of the arc-shaped end of the arc-shaped tube 21 is provided with a guide wheel assembly 22, and the inner wall of the arc-shaped tube 21 is provided with a plug block 24. At the same time, a thermocouple mounting hole 25 is opened in the tube wall of the arc-shaped tube 21. A horizontal tube is provided at both ends of the arc-shaped tube 21, and a connecting block 26 is fixed to the horizontal tube section. A reducing end 28 is connected to the outer end of the horizontal tube. At the same time, a guide wheel 27 is provided on the inner wall of the bend of the horizontal tube. An installation groove is opened on the upper side of the fixing seat 32, and the bottom of the arc-shaped tube 21 is placed in the installation groove. A bolt is screwed on the outer side of the installation groove. At the same time, the slider 33 is slidably connected in the sliding groove 34 opened at the bottom of the shaping box 1.

[0028] Specifically, the guide wheel assembly 22 is set on the inner wall of each arc end of the arc-shaped tube 21, and one guide wheel assembly 22 includes four guide wheels, all of which are made of metal.

[0029] It should be noted that the guide wheel assembly 22 includes a fixed wheel structure with an annular groove. It does not have a rotational effect. When the yarn passes through its groove, it slides and contacts the yarn, which has the effect of changing direction at the arc end of the arc tube 21.

[0030] Specifically, in the disassembled arc-shaped pipe 21, the plug block 24 is provided on the cross-section of one side of the pipe after it has been cut open, and the corresponding cross-section of the other side of the pipe has a slot, so that when the two cut parts of the arc-shaped pipe 21 are joined together, the plug block 24 is joined with the slot.

[0031] Specifically, the connecting block 26 is set as two independent rectangular block structures with through holes, and can be tightly fixed by the connecting block 26 when the arc tube 21 is assembled.

[0032] As a preferred embodiment, by setting the slider 33 and the groove 34, it is convenient to move the fixed seat 32 by the screw 31, thereby disengaging the variable diameter end 28 from the guide tube on the inlet side of the shaping box 1. After the yarn passes through the arc tube 21, and while the yarn is taut, the variable diameter end 28 is inserted into the guide tube by moving the fixed seat 32.

[0033] As a preferred implementation, by providing thermocouple mounting holes 25, a thermocouple temperature sensor is installed on the outer wall of the arc-shaped tube 21 to monitor the internal temperature of the arc-shaped tube 21. The internal temperature of the arc-shaped tube 21 is controlled by electrically connecting the temperature controller to the heating coil 23.

[0034] like Figure 1 , Figure 3 and Figure 4 In the process, the adjusting cylinder 4 is installed on the lower side of the shaping box 1, and the piston rod of the adjusting cylinder 4 slides through the bottom wall of the shaping box 1. The tension detection assembly 42 includes a sensor body 421 installed on the outer wall of the fixed frame 41, and a terminal 422 is provided on the outer side of the sensor body 421. A rotating shaft 423 is provided on the inner end of the sensor body 421. The rotating shaft 423 rotates through the fixed frame 41, and a detection wheel 424 is connected to the inner end of the rotating shaft 423. The pressing cylinder 5 is fixed on the top of the shaping box 1, and a pressing block 51 is connected to the lower end of the pressing cylinder 5. The pressing block 51 is located on the upper side of the detection wheel 424. A heating roller 6 is provided on one side of the pressing block 51.

[0035] Specifically, the sensor body 421 is designed as a unidirectional wheel tension sensor structure in the prior art, and the rotating shaft 423 is not connected to the inner wall structure of the fixed frame 41. This allows the pressure exerted by the yarn on the rotating shaft 423 by the detection wheel 424 to be transmitted through the rotating shaft 423 to the pressure detection element inside the sensor body 421 for detection.

[0036] Specifically, the lower end of the clamping block 51 is provided with an arc-shaped groove structure that matches the groove of the detection wheel 424. By setting the clamping cylinder 5 and the clamping block 51, the lead-out end of the yarn is fixed after the yarn passes through the arc-shaped tube 21, and the starting end of the yarn is fixed at the same time. This allows the yarn to maintain a certain tension in the arc-shaped tube 21, and then the other part of the arc-shaped tube 21 is installed.

[0037] It should be noted that the heating roll 6 has three sets arranged in a triangular pattern, and the heating roll 6 has the same structural principle as the same component involved in the prior art document.

[0038] In use, first, the connecting block is disassembled, separating the arc-shaped tube into two asymmetrical parts. Then, the yarn passes through one of the tube sections with guide wheels and guide rollers. One end of the yarn is then placed in the groove of the detection wheel. At this point, the clamping cylinder is activated to drive the clamping block downwards, thus clamping one end of the yarn. The other part of the arc-shaped tube is then connected to the part through which the yarn passes, and then the connecting block is used to connect them into a complete S-shaped pipe structure. The heating coil is then fitted and fixed to the outer wall of the arc-shaped tube. After power is applied, the yarn inside the arc-shaped tube is heated. During operation, the clamping block moves away from the detection wheel. The tension detection system, including the detection wheel, rotating shaft, and sensor body, allows for real-time monitoring of the yarn tension as it passes through the detection wheel. The sensor body then feeds back the data to the controller. The controller's internal microprocessor analyzes the data and compares it with preset parameters to determine whether to adjust the yarn tension.

[0039] The yarn stretching and setting device of this invention can effectively solve the problems mentioned in the background technology. It achieves the effect of extending the heating path and duration of the yarn without increasing the size of the setting equipment, and also has the effect of yarn tension detection and adjustment, based on the existing yarn stretching and setting device technology.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A yarn stretching and setting device, comprising: A shaping box (1) is characterized in that: a heating component (2) is provided on the inner side of the shaping box (1), and a base component (3) is connected to the lower side of the heating component (2), and an adjusting cylinder (4) and a pressing cylinder (5) are provided on one side of the heating component (2). The heating component (2) includes an arc tube (21), and a heating coil (23) is installed on the outer wall of the arc tube (21). Connecting blocks (26) are provided at both ends of the arc tube (21). The base component (3) includes a fixed seat (32), and a slider (33) is connected to the lower end of the fixed seat (32). A screw rod (31) is rotatably connected to one end of the fixed seat (32). A fixed frame (41) is connected to the upper end of the adjusting cylinder (4), and a tension detection component (42) is installed on the upper end of the fixed frame (41).

2. The yarn stretching and setting device according to claim 1, characterized in that, The inner wall of the arc end of the arc tube (21) is provided with a guide wheel assembly (22), and the inner wall of the arc tube (21) is provided with a plug block (24). At the same time, a thermocouple mounting hole (25) is opened on the tube wall of the arc tube (21).

3. The yarn stretching and setting device according to claim 1, characterized in that, The arc-shaped tube (21) has a horizontal tube at both ends, and the connecting block (26) is fixed to the horizontal tube section. A variable diameter end (28) is connected to the outer end of the horizontal tube, and a guide wheel (27) is provided on the inner wall at the bend of the horizontal tube.

4. The yarn stretching and setting device according to claim 1, characterized in that, The upper side of the fixed seat (32) is provided with an installation groove, and the bottom of the arc tube (21) is placed in the installation groove. A bolt is screwed on the outside of the installation groove, and the slider (33) is slidably connected in the sliding groove (34) opened at the bottom of the shaping box (1).

5. The yarn stretching and setting device according to claim 1, characterized in that, The adjusting cylinder (4) is installed on the lower side of the shaping box (1), and the piston rod of the adjusting cylinder (4) slides through the bottom wall of the shaping box (1).

6. The yarn stretching and setting device according to claim 1, characterized in that, The tension detection assembly (42) includes a sensor body (421) mounted on the outer wall of the fixed frame (41), and a terminal (422) is provided on the outer side of the sensor body (421), and a rotating shaft (423) is provided on the inner end of the sensor body (421). The rotating shaft (423) rotates through the fixed frame (41), and a detection wheel (424) is connected to the inner end of the rotating shaft (423).

7. The yarn stretching and setting device according to claim 1, characterized in that, The pressing cylinder (5) is fixed on the top of the shaping box (1), and the lower end of the pressing cylinder (5) is connected to the pressing block (51). The pressing block (51) is located on the upper side of the detection wheel (424), and a heating roller (6) is provided on one side of the pressing block (51).

Images