Spinning winding equipment

Abstract

The utility model belongs to the technical field of spinning winding, and particularly relates to spinning winding equipment which comprises an installation frame. The side wall of the mounting frame is rotationally connected with a mounting plate; the middle part of the mounting plate is symmetrically arranged and rotationally connected with a pair of first gears; a motor is fixedly connected to the side wall of the mounting frame; the output end of the motor is fixedly connected with a second gear; the second gear is meshed with the first gear; a pair of limiting plates is fixedly connected to the side, away from the mounting frame, of the first gear. A mounting roller is slidably connected to the middle parts of the pair of limiting plates; one end, away from the mounting rack, of the mounting roller is in threaded connection with a limiting circular plate; by means of the structure, after yarn winding is completed, the yarn can be directly connected with a new sleeve and begins to be wound, in the yarn winding process of the new sleeve, the wound sleeve is taken down and replaced with the new sleeve, and therefore the time interval between two times of yarn winding is shortened, and the yarn winding efficiency is improved. Therefore, the processing speed of yarn continuous winding is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of spinning and winding, in particular to a spinning and winding device. Background Art

[0002] Spinning is a key process in the textile industry, the purpose of which is to process fiber raw materials into continuous yarn.

[0003] During spinning, multiple processed fiber strips need to be stretched and thinned using a drafting device to make the fiber strips slender, and then a twisting device is used to make multiple slender fiber strips entangled with each other to form yarns with certain strength and elasticity. Finally, a winding device is used to wind the yarn on a sleeve to facilitate the subsequent use, transportation and sale of the yarn.

[0004] The existing spinning winding equipment generally installs a sleeve on a rotating roller, and drives the sleeve to wind the yarn through the rotating roller. After completing the winding of a roll of yarn, it is necessary to cut the yarn, remove the finished product, install a new sleeve, and connect the thread end to the new sleeve before continuing to wind the yarn. The steps are cumbersome, and the time interval between two yarn windings is too large, which has a certain impact on the processing speed when the yarn is continuously wound.

[0005] To this end, the utility model provides a spinning and winding device. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the utility model to solve its technical problems is: a spinning winding device described in the utility model comprises a mounting frame; a mounting plate is rotatably connected to the side wall of the mounting frame; a pair of first gears are symmetrically arranged and rotatably connected to the middle part of the mounting plate; a motor is fixedly connected to the side wall of the mounting frame; a second gear is fixedly connected to the output end of the motor; the second gear is meshed with the first gear; a pair of limit plates are fixedly connected to the side of the first gear away from the mounting frame; a mounting roller is slidably connected to the middle part of the pair of limit plates; one end of the mounting roller away from the mounting frame is threadedly connected to the limit circular plate; a pair of first card slots are symmetrically arranged in the middle part of the mounting plate; a first limit rod is slidably connected to the middle part of the mounting frame; through the above structure, after the yarn is wound, the yarn can be directly connected to the new sleeve and start winding. In the process of winding the yarn with the new sleeve, the sleeve that has been wound can be removed and replaced with a new sleeve, thereby reducing the time interval between two yarn windings, thereby improving the processing speed of continuous yarn winding.

[0008] Preferably, a circular plate is rotatably connected to the middle part of the first gear; a reciprocating screw is fixedly connected to the middle part of the circular plate; a second slot is opened at one end of the reciprocating screw facing the mounting frame; a second limit rod is slidably connected to the middle part of the mounting frame; the second slot and the second limit rod are arranged in polygons of the same shape; a plurality of guide rods are fixedly connected to the side wall of the circular plate; a sleeve is threadedly connected to the middle part of the reciprocating screw; a transmission tube is rotatably and slidably connected to the middle parts of the plurality of guide rods; the transmission tube is simultaneously located in grooves opened in the middle part of the sleeve and in the inner surface of the mounting roller; a gear assembly kit is installed inside the mounting roller; the sleeve rotates as the mounting roller rotates through the gear assembly kit; a closing assembly is installed at the end of the mounting roller; through the above structure, the yarn can be evenly wound around the middle part of the sleeve, thereby improving the quality of the yarn winding product.

[0009] Preferably, the gear combination kit includes a combination gear; the combination gear is rotatably and slidably connected to the middle part of a guide rod; the combination gear is composed of a small gear fixed to the side wall of a large gear; the interior of the mounting roller is provided with a gear meshing with the large gear of the combination gear; the middle part of the reciprocating screw rod is rotatably and slidably connected to a third gear; the third gear is meshed with the small gear of the combination gear; the third gear and the sleeve are synchronously rotated through the grooves and teeth at the connection; through the above structure, when winding yarns of different thicknesses, the yarn can be evenly wound in the middle part of the sleeve, thereby improving the practicality of the equipment.

[0010] Preferably, the closing component includes an outer ring and an inner ring; the outer ring is threadedly connected to the inside of the mounting roller; a plurality of support rollers are installed between the outer ring and the inner ring; a plurality of guide rods are respectively arranged through the middle parts of the plurality of support rollers; the middle parts of the plurality of support rollers are rotatably connected to connecting rings; connecting rods are fixedly connected between the plurality of connecting rings; through the above structure, the gear assembly kit can be conveniently restricted to the inside of the mounting roller, reducing the occurrence of the gear assembly kit loosening, and when replacing the gear assembly kit, it can be quickly removed or installed.

[0011] Preferably, a round sleeve is detachably mounted on the end of the reciprocating screw rod; a plurality of limit rings are fixedly connected to the middle of the round sleeve; through the above structure, when the equipment is running, the vibration of the plurality of guide rods is reduced, thereby reducing the impact on the yarn winding.

[0012] Preferably, a supporting round rod is fixedly connected to the middle part of the mounting plate; the side walls of the supporting round rod are symmetrically arranged and a pair of supporting rods are detachably installed by magnetic attraction; the side walls of the support rods are fixedly connected to protrusions; a groove is provided at the end of the reciprocating screw rod; through the above structure, the shaking of the reciprocating screw rod during the operation of the equipment is reduced, thereby reducing the impact on the yarn winding quality.

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

[0014] 1. The spinning and winding device described in the utility model, through the arrangement of a mounting plate, a pair of first gears, and a pair of mounting rollers, can directly connect the yarn to a new sleeve and start winding after the yarn of one sleeve is wound. During the process of winding the yarn on the new sleeve, the sleeve that has been wound is removed and replaced with a new sleeve, thereby reducing the time interval between two yarn windings, thereby improving the processing speed of continuous yarn winding.

[0015] 2. The spinning and winding equipment described in the utility model, through the setting of the reciprocating screw rod and the gear combination kit, enables the sleeve to rotate to wind the yarn while moving back and forth, so that the yarn can be evenly wound in the middle of the sleeve, thereby improving the quality of the yarn winding product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the first gear in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the installation roller in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the gear assembly kit in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the closing component in the utility model;

[0022] Figure 6 It is a structural schematic diagram of the support rod in the utility model;

[0023] In the figure: 1. mounting frame; 12. mounting plate; 13. first gear; 14. motor; 15. second gear; 16. limiting plate; 17. mounting roller; 18. limiting circular plate; 19. first slot; 110. first limiting rod; 2. circular plate; 21. reciprocating screw; 22. second slot; 23. second limiting rod; 24. guide rod; 25. sleeve; 26. transmission tube; 27. gear assembly kit; 28. closing assembly; 3. combination gear; 31. third gear; 4. outer ring; 41. inner ring; 42. support roller; 43. connecting ring; 44. connecting rod; 5. round sleeve; 51. limiting ring; 6. supporting round rod; 61. support rod; 62. bump; 63. groove; 7. connecting handle; 71. spring. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figures 1 to 4 As shown, a spinning winding device described in an embodiment of the utility model comprises a mounting frame 1; a mounting plate 12 is rotatably connected to the side wall of the mounting frame 1; a pair of first gears 13 are symmetrically arranged and rotatably connected to the middle part of the mounting plate 12; a motor 14 is fixedly connected to the side wall of the mounting frame 1; a second gear 15 is fixedly connected to the output end of the motor 14; the second gear 15 is meshed with the first gear 13; a pair of limiting plates 16 are fixedly connected to the side of the first gear 13 away from the mounting frame 1; a mounting roller 1 is slidably connected to the middle part of the pair of limiting plates 16 7; the end of the mounting roller 17 away from the mounting frame 1 is threadedly connected to a limiting circular plate 18; the middle part of the mounting plate 12 is symmetrically arranged with a pair of first slots 19; the middle part of the mounting frame 1 is slidably connected to a first limiting rod 110; when working, a sleeve for winding yarn is sleeved in the middle part of the pair of mounting rollers 17, and the sleeve rotates with the mounting rollers 17 through the squeezing of the limiting circular plate 18 and the mounting rollers 17, and then the yarn is connected to the sleeve in the middle part of one of the mounting rollers 17, and the first gear 13 where the mounting roller 17 is located is connected to the first gear 13 of the second mounting roller 17. The two gears 15 are meshed, and then the motor 14 is started to drive the installation roller 17 and the sleeve to rotate to wind the yarn. After the yarn on the sleeve is wound, the first limit rod 110 is slid out from the inside of the first card slot 19, and then the mounting plate 12 is rotated to make the pair of installation rollers 17 change positions, and then the first limit rod 110 is inserted into the corresponding first card slot 19 so that the mounting plate 12 cannot continue to rotate. At this time, the uncut yarn will bypass the middle of the sleeve where the yarn is not wound. At this time, the yarn can be connected to the sleeve, and then the excess yarn can be wound. The motor 14 can be started again to drive the sleeve to wind the yarn. During the yarn winding process, the previously wound yarn and sleeve can be removed from the middle of the mounting roller 17, and a new sleeve can be installed to complete the cycle. Through the above structure, after the yarn is wound, the yarn can be directly connected to the new sleeve and start winding. During the yarn winding process of the new sleeve, the sleeve that has been wound can be removed and replaced with a new sleeve, thereby reducing the time interval between the two yarn windings, thereby improving the processing speed of continuous yarn winding.

[0026] like Figures 1 to 5As shown, the middle part of the first gear 13 is rotatably connected with a circular plate 2; a reciprocating screw rod 21 is fixedly connected to the middle part of the circular plate 2; a second slot 22 is provided at one end of the reciprocating screw rod 21 facing the mounting frame 1; a second limit rod 23 is slidably connected to the middle part of the mounting frame 1; the second slot 22 and the second limit rod 23 are arranged in polygons of the same shape; a plurality of guide rods 24 are fixedly connected to the side wall of the circular plate 2; a sleeve 25 is threadedly connected to the middle part of the reciprocating screw rod 21; a transmission pipe 26 is rotatably and slidably connected to the middle parts of the plurality of guide rods 24; the transmission pipe 26 is simultaneously located in the grooves provided in the middle part of the sleeve 25 and the inner surface of the mounting roller 17; a gear assembly kit 27 is installed inside the mounting roller 17; the sleeve 25 is connected to the gear assembly kit through the gear assembly kit The component 27 rotates as the mounting roller 17 rotates; a closing component 28 is installed at the end of the mounting roller 17; when working, the second limit rod 23 is inserted into the corresponding second slot 22 to prevent the reciprocating screw rod 21 from rotating. When the mounting roller 17 rotates, the transmission of the gear combination kit 27 drives the sleeve 25 to rotate, so that the sleeve 25 reciprocates along the reciprocating screw rod 21 when rotating. At the same time, the moving sleeve 25 will drive multiple transmission tubes 26 to slide along the guide rod 24, thereby driving the mounting roller 17 to slide along the limit plate 16. At this time, the sleeve in the middle of the mounting roller 17 will rotate to wind the yarn while reciprocating, so that the yarn can be evenly wound in the middle of the sleeve, thereby improving the quality of the yarn winding product.

[0027] like Figures 1 to 4As shown, the gear assembly kit 27 includes a combination gear 3; the combination gear 3 is rotatably and slidably connected to the middle part of a guide rod 24; the combination gear 3 is composed of a small gear fixed to the side wall of a large gear; a gear meshing with the large gear of the combination gear 3 is provided inside the installation roller 17; the middle part of the reciprocating screw 21 is rotatably and slidably connected with a third gear 31; the third gear 31 is meshed with the small gear of the combination gear 3; the third gear 31 and the sleeve 25 are synchronously rotated through the grooves and teeth at the connection; when working, the rotation of the installation roller 17 will drive the combination gear 3 to rotate, and then drive the third gear 31 to rotate through the meshing relationship between the small gear of the combination gear 3 and the third gear 31, and then drive the sleeve 25 to rotate through the matching relationship between the third gear 31 and the sleeve 25, forming a transmission match between the installation roller 17 and the sleeve 25. At the same time, when the diameter of the small gear of the combination gear 3 When the diameter of the third gear 31 decreases and the diameter of the third gear 31 increases, the sleeve 25 performs a reciprocating motion along the reciprocating screw rod 21, and the mounting roller 17 will rotate more circles, so that the thinner yarn can be evenly wound in the middle of the sleeve. On the contrary, when the diameter of the pinion of the combination gear 3 increases and the diameter of the third gear 31 decreases, the sleeve 25 performs a reciprocating motion along the reciprocating screw rod 21, and the mounting roller 17 will rotate fewer circles, so that the thicker yarn can be evenly wound in the middle of the sleeve. Therefore, according to the thickness of the wound yarn, the closing component 28 can be removed from the end of the mounting roller 17, and the combination gear 3 and the third gear 31 of different diameters can be selected for installation. When the closing component 28 is installed at the end of the mounting roller 17, the combination gear 3 and the third gear 31 are prevented from falling off, so that when winding yarns of different thicknesses, the yarn can be evenly wound in the middle of the sleeve, thereby improving the practicality of the equipment.

[0028] like Figures 1 to 5As shown, the closing assembly 28 includes an outer ring 4 and an inner ring 41; the outer ring 4 is threadedly connected to the inside of the mounting roller 17; a plurality of support rollers 42 are installed between the outer ring 4 and the inner ring 41; a plurality of guide rods 24 are respectively arranged through the middle parts of the plurality of support rollers 42; the middle parts of the plurality of support rollers 42 are rotatably connected with connecting rings 43; a plurality of connecting rings 43 are fixedly connected with connecting rods 44; during operation, when it is necessary to replace the gear assembly kit 27, the outer ring 4 is rotated to be removed from the end of the mounting roller 17, and then the gear assembly kit 27 is replaced. After the gear assembly kit 27 is replaced, the inner ring 41 is removed from the reciprocating wire. The end of the rod 21 is sleeved on the middle part of the reciprocating screw rod 21, and multiple support rollers 42 are sleeved on the middle part of the guide rod 24, and then the outer ring 4 is rotated to fix the device inside the mounting roller 17, thereby reducing the occurrence of loosening of the gear assembly kit 27. At the same time, the setting of the connecting ring 43 and the connecting rod 44 can make the multiple support rollers 42 easily sleeved on the middle part of the guide rod 24, thereby improving the convenience of device installation. Through the above structure, the gear assembly kit 27 can be conveniently restricted to the inside of the mounting roller 17, reducing the occurrence of loosening of the gear assembly kit 27, and when replacing the gear assembly kit 27, it can be quickly removed or installed.

[0029] like Figures 1 to 6 As shown, a round sleeve 5 is detachably mounted on the end of the reciprocating screw rod 21; a plurality of limit rings 51 are fixedly connected to the middle of the round sleeve 5; during operation, when replacing the gear assembly kit 27, the round sleeve 5 is first removed, and after the gear assembly kit 27 is replaced and the closing assembly 28 is installed, the round sleeve 5 and the limit ring 51 are then sleeved on the ends of the reciprocating screw rod 21 and the guide rod 24, so that the distance between the ends of the plurality of guide rods 24 and the end of the reciprocating screw rod 21 remains fixed, thereby reducing the vibration of the plurality of guide rods 24 when the equipment is running, thereby reducing the impact on the yarn winding.

[0030] like Figures 1 to 6 As shown, a supporting round rod 6 is fixedly connected to the middle part of the mounting plate 12; the side walls of the supporting round rod 6 are symmetrically arranged and a pair of supporting rods 61 are detachably installed by magnetic attraction; the side walls of the supporting rod 61 are fixedly connected with a protrusion 62; the end of the reciprocating screw rod 21 is provided with a groove 63; during operation, when replacing the sleeve, the supporting rod 61 is removed, and then the sleeve is replaced, and after the replacement, the supporting rod 61 is installed on the side wall of the supporting round rod 6, and the protrusion 62 is inserted into the inside of the groove 63, so that the end of the reciprocating screw rod 21 is supported by the supporting rod 61, thereby reducing the shaking of the reciprocating screw rod 21 during the operation of the equipment, thereby reducing the impact on the yarn winding quality.

[0031] like Figure 2As shown, the ends of the second limit rod 23 and the first limit rod 110 are fixedly connected with a connecting handle 7; the side wall of the connecting handle 7 is fixedly connected with a spring 71; the other end of the spring 71 is fixedly connected to the side wall of the mounting frame 1; through the above structure, when it is necessary to rotate the mounting plate 12, the second limit rod 23 and the first limit rod 110 can be quickly pulled out from the inside of the second slot 22 and the first slot 19, making the operation of the equipment more convenient.

[0032] During operation, a sleeve for winding the yarn is sleeved in the middle of a pair of mounting rollers 17, and the sleeve rotates with the mounting rollers 17 by squeezing the limiting circular plate 18 and the mounting rollers 17, and then the yarn is connected to the sleeve in the middle of one of the mounting rollers 17, and the first gear 13 where the mounting roller 17 is located is meshed with the second gear 15, and then the motor 14 is started to drive the mounting roller 17 and the sleeve to rotate to wind the yarn, and after the yarn on the sleeve is wound, the first limiting rod 110 is slid out of the first slot 19, and then After that, the mounting plate 12 is rotated to change the position of the pair of mounting rollers 17, and then the first limiting rod 110 is inserted into the corresponding first card slot 19 to prevent the mounting plate 12 from continuing to rotate. At this time, the yarn that has not been cut off will bypass the middle part of the sleeve where the yarn has not been wound. At this time, the yarn can be connected to the sleeve, and then the excess yarn can be cut off. At this time, the motor 14 can be started again to drive the sleeve to wind the yarn. During the yarn winding process, the previously wound yarn and sleeve can be removed from the middle part of the mounting roller 17, and a new sleeve can be installed, thereby completing the process. The second limiting rod 23 is inserted into the corresponding second slot 22 to prevent the reciprocating screw rod 21 from rotating. When the installation roller 17 rotates, the transmission of the gear assembly kit 27 drives the sleeve 25 to rotate, so that the sleeve 25 reciprocates along the reciprocating screw rod 21 when rotating. At the same time, the moving sleeve 25 drives multiple transmission tubes 26 to slide along the guide rod 24, thereby driving the installation roller 17 to slide along the limiting plate 16. At this time, the sleeve in the middle of the installation roller 17 rotates to wind the yarn while reciprocating. When the diameter of the pinion of the combination gear 3 decreases and the diameter of the third gear 31 increases, the sleeve 25 makes a reciprocating motion along the reciprocating screw rod 21, and the mounting roller 17 rotates more times, so that the thinner yarn can be evenly wound in the middle of the sleeve. On the contrary, when the diameter of the pinion of the combination gear 3 increases and the diameter of the third gear 31 decreases, the sleeve 25 makes a reciprocating motion along the reciprocating screw rod 21, and the mounting roller 17 rotates fewer times, so that the thicker yarn can be evenly wound in the middle of the sleeve.

[0033] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A spinning winding device, comprising a mounting frame (1); characterized in that: The side wall of the mounting frame (1) is rotatably connected to a mounting plate (12); the middle part of the mounting plate (12) is symmetrically arranged and rotatably connected to a pair of first gears (13); the side wall of the mounting frame (1) is fixedly connected to a motor (14); the output end of the motor (14) is fixedly connected to a second gear (15); the second gear (15) and the first gear (13) are meshed; a pair of limit plates (16) are fixedly connected to the side of the first gear (13) away from the mounting frame (1); the middle part of the pair of limit plates (16) is slidably connected to a mounting roller (17); one end of the mounting roller (17) away from the mounting frame (1) is threadedly connected to a limit circular plate (18); a pair of first slots (19) are symmetrically arranged in the middle part of the mounting plate (12); and a first limit rod (110) is slidably connected to the middle part of the mounting frame (1).

2. A spinning and winding device according to claim 1, characterized in that: The middle part of the first gear (13) is rotatably connected to a circular plate (2); the middle part of the circular plate (2) is fixedly connected to a reciprocating screw rod (21); a second clamping groove (22) is provided at one end of the reciprocating screw rod (21) facing the mounting frame (1); the middle part of the mounting frame (1) is slidably connected to a second limiting rod (23); the second clamping groove (22) and the second limiting rod (23) are arranged in polygonal shapes of the same shape; a plurality of guide rods (24) are fixedly connected to the side wall of the circular plate (2); the reciprocating screw rod (21) is provided with a second clamping groove (22) at one end facing the mounting frame (1 ... the second clamping groove (22) and the second limiting rod (23) are provided with a plurality of guide rods (24) at one end; the second clamping groove (22) and the second limiting rod (23) are provided with a second clamping groove (22) at one end facing the mounting frame (1); the second clamping groove (22) and the second limiting rod (23) are provided with a second clamping groove (22) at one end facing the mounting frame (1); the second clamping groove (22) and the second limiting rod (23) are provided with a second clamping groove (22) at one end facing the mounting frame (1); the second clamping groove (22) and the second limiting rod (23) are provided with a second clamping groove (22) at one end facing the mounting frame (1); the second clamping 1) is threadedly connected to a sleeve (25) in the middle; a transmission tube (26) is rotatably and slidably connected to the middle of the plurality of guide rods (24); the transmission tube (26) is simultaneously located in a groove opened in the middle of the sleeve (25) and in the inner surface of the installation roller (17); a gear assembly kit (27) is installed inside the installation roller (17); the sleeve (25) rotates as the installation roller (17) rotates through the gear assembly kit (27); and a closing component (28) is installed at the end of the installation roller (17).

3. A spinning and winding device according to claim 2, characterized in that: The gear assembly kit (27) comprises a combined gear (3); the combined gear (3) is rotatably and slidably connected to the middle part of a guide rod (24); the combined gear (3) is composed of a large gear side wall fixedly connected to a small gear; a gear meshing with the large gear of the combined gear (3) is provided inside the mounting roller (17); a third gear (31) is rotatably and slidably connected to the middle part of the reciprocating screw (21); the third gear (31) is meshed with the small gear of the combined gear (3); the third gear (31) and the sleeve (25) are synchronously rotated through the grooves and teeth at the connection.

4. A spinning and winding device according to claim 3, characterized in that: The closing assembly (28) comprises an outer ring (4) and an inner ring (41); the outer ring (4) is threadedly connected to the inside of the mounting roller (17); a plurality of supporting rollers (42) are installed between the outer ring (4) and the inner ring (41); a plurality of guide rods (24) are respectively arranged through the middle parts of the plurality of supporting rollers (42); the middle parts of the plurality of supporting rollers (42) are rotatably connected to connecting rings (43); and connecting rods (44) are fixedly connected between the plurality of connecting rings (43).

5. A spinning and winding device according to claim 4, characterized in that: A round sleeve (5) is detachably mounted on the end of the reciprocating screw rod (21); a plurality of limiting rings (51) are fixedly connected to the middle of the round sleeve (5).

6. A spinning and winding device according to claim 5, characterized in that: A supporting round rod (6) is fixedly connected to the middle of the mounting plate (12); the side walls of the supporting round rod (6) are symmetrically arranged and detachably mounted with a pair of supporting rods (61) through magnetic attraction; a protrusion (62) is fixedly connected to the side walls of the supporting rod (61); and a groove (63) is provided at the end of the reciprocating screw rod (21).

Images