Traction device for plastic straw production

Abstract

The utility model discloses a traction device for plastic straw production, which comprises a workbench, a plurality of traction structures used for pulling plastic straws to longitudinally move along the workbench are arranged on the workbench, and each traction structure comprises a guide rail, a sliding block, a fixed block, a first driving mechanism, a guide pipe, a second driving mechanism and a height adjusting structure, two parallel horizontal guide rails are arranged on the workbench in the longitudinal direction, two sliding blocks are symmetrically arranged on the two guide rails, a first driving mechanism is arranged between the two guide rails, a fixing block is arranged on the two sliding blocks, a pipe penetrating hole is formed in the fixing block, and two guide holes are symmetrically formed in the two side faces of the fixing block. And the two guide holes communicate with the pipe penetrating hole in the fixing block correspondingly, two guide pipes are symmetrically arranged in the two guide holes, two second driving mechanisms are arranged at the outer ends of the guide holes, and a height adjusting structure is arranged in the middle of the pipe penetrating hole. The straw traction conveying device cannot damage straws, can realize traction conveying of straws of various sizes, and is high in traction conveying efficiency and good in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic straw production equipment, in particular to a traction device for plastic straw production. Background Art

[0002] The production process of plastic straws includes preparing plastic raw materials, cleaning the extruder, extrusion molding, blowing up the formed plastic straws, water-cooling the blown-up plastic straws, maintaining the formed state of the water-cooled plastic straws through a chevron plate, performing traction on the plastic straws after maintaining the formed state, tightening and cutting the tractioned plastic straws, and finally inspecting, packaging and warehousing.

[0003] At present, the plastic straw traction process equipment is easy to damage plastic straws, resulting in insufficient roundness of plastic straws, easy wear of the outer wall of plastic straws. When producing straws with different diameters, the traction clamping mechanism needs to be replaced multiple times. Moreover, during use, the traction clamping mechanism cannot be adjusted according to the height of the extrusion device, which slows down the production speed. In addition, during the process of tractioning plastic straws, the plastic straws are easily pulled out of shape, damaging the outer tube of the straws. Summary of the Utility Model

[0004] The utility model provides a traction device for plastic straw production, which solves the problems that the traditional plastic straw traction equipment is easy to wear and damage straws, the diameter of the straws that can be tractioned is fixed, and the traction height of the straws is not adjustable.

[0005] The utility model provides a traction device for plastic straw production, which includes a workbench. A plurality of traction structures for tractioning plastic straws to move longitudinally along the workbench are arranged on the workbench. Each traction structure includes a guide rail, a slider, a fixed block, a first driving mechanism, a guide tube, a second driving mechanism, and a height adjustment structure. Two parallel horizontal guide rails are arranged longitudinally on the workbench. Two sliders are symmetrically arranged on the two guide rails. A first driving mechanism for driving the two sliders to reciprocate on the two guide rails is arranged between the two guide rails. Fixed blocks are arranged on the two sliders. A horizontally penetrating pipe hole is arranged in the fixed block in the front and back directions. Two guide holes are symmetrically arranged on both side faces of the fixed block. The two guide holes are respectively communicated with the pipe hole inside the fixed block. Two guide tubes are symmetrically arranged in the two guide holes. Two second driving mechanisms for driving the guide tubes to move horizontally and reciprocally in the guide holes are arranged at the outer ends of each guide hole. A height adjustment structure for adjusting the traction height of plastic straws is arranged below the middle part of the pipe hole.

[0006] Further, the first driving mechanism includes a first motor, a rotating link, a swinging link, a guiding link, a motor base, and a connecting plate. The motor base is arranged at the bottom of the workbench. The first motor is arranged on the motor base. The output shaft of the first motor passes through the workbench and is fixedly connected to one end of the rotating link. The other end of the rotating link is horizontally hinged to one end of the swinging link. The other end of the swinging link is horizontally hinged to one end of the guiding link. The other end of the guiding link is fixedly connected to the connecting plate. Both ends of the connecting plate are respectively fixedly connected to two sliders.

[0007] Further, each second driving mechanism includes a second driving motor, a driving pulley, a driven pulley, a transmission belt, a first mounting shaft, a second mounting shaft, and a mounting plate. The mounting plate is arranged on the side surface of the fixed block. The first mounting shaft and the second mounting shaft are arranged at intervals on the front side surface of the mounting plate. One ends of the first mounting shaft and the second mounting shaft are respectively rotationally connected to bearings in corresponding mounting holes on the mounting plate, and the other ends are horizontally suspended. The suspended end of the first mounting shaft fixes the driving pulley, and the suspended end of the second mounting shaft fixes the driven pulley. The second driving motor is arranged on the rear side of the mounting plate and is connected to the first mounting shaft. The driving pulley and the driven pulley are connected by the transmission belt.

[0008] Further, the rear end of each guiding tube is connected to a vacuum pump arranged on the workbench through an air conveying hose.

[0009] Further, the height adjusting structure includes an adjusting rod, a roller seat, a roller, an adjusting frame, and an adjusting nut. An adjusting hole is arranged in the middle of the pipe-passing hole. The adjusting rod is passed through the adjusting hole. A roller seat is arranged at the upper end of the adjusting rod. A roller for rotatably supporting the plastic straw is arranged on the roller seat. An adjusting frame is arranged at the lower end of the adjusting rod. The adjusting frame is U-shaped. Both ends of the adjusting frame are fixed to the bottom of the fixed block. The lower end of the adjusting rod is fixed to the middle of the adjusting frame by two adjusting nuts.

[0010] Further, a suction nozzle is arranged at the front end of each guiding tube.

[0011] As can be seen from the above technical solutions, the present utility model provides a traction device for plastic straw production.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. By using a vacuum pump to evacuate the air in the guiding tube to make the guiding tube in a negative pressure state, then driving the two guiding tubes to move towards the middle of the fixed block by the second driving mechanism to touch and suck the plastic straw, and then driving the slider to drive the fixed block to convey the plastic straw forward along the guide rail by the first driving mechanism. The efficient traction and conveying of the plastic straw are realized through a fast reciprocating conveying method. The plastic straw will not be worn and damaged during the traction process, with good safety and high traction and conveying efficiency.

[0014] 2. The two guiding tubes are driven by the second driving mechanism to move towards the middle to adsorb the plastic straws, and the height of the plastic straws is supported and adjusted by the height adjusting structure, so as to realize the clamping, traction and conveying of plastic straws with different diameter specifications. During the traction process, the plastic straws will not be stretched, and the stability of traction and conveying is good. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the present invention, the drawings required in the implementation cases will be briefly introduced below. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative labor.

[0016] Figure 1 It is a schematic diagram of the overall structure of a traction device for plastic straw production proposed by the present invention;

[0017] Figure 2 It is a schematic diagram of a partial structure of a traction device for plastic straw production proposed by the present invention;

[0018] Figure 3 It is a schematic cross-sectional view of a partial structure of a traction device for plastic straw production proposed by the present invention;

[0019] Figure 4 It is a partial enlarged schematic diagram of the structure at position Ⅰ of the appendix of the present invention Figure 3 of the present invention;

[0020] Figure 5 It is a schematic cross-sectional view of the second driving mechanism of a traction device for plastic straw production proposed by the present invention;

[0021] Figure 6 It is a partial enlarged schematic diagram of the structure at position Ⅱ of the appendix of the present invention Figure 3 of the present invention.

[0022] In the figure:

[0023] 1 - Workbench;

[0024] 2 - Guide rail;

[0025] 3 - Slide block;

[0026] 4 - Fixed block; 41 - Pipe passing hole; 42 - Guide hole; 43 - Adjusting hole;

[0027] 5 - First driving mechanism; 51 - First motor; 52 - Rotating connecting rod; 53 - Oscillating connecting rod; 54 - Guide connecting rod; 55 - Motor base; 56 - Connecting plate;

[0028] 6 - Guiding tube; 61 - Air delivery hose; 62 - Vacuum pump; 63 - Suction nozzle; 64 - Solenoid valve;

[0029] 7 - Second driving mechanism; 71 - Second driving motor; 72 - Driving pulley; 73 - Driven pulley; 74 - Transmission belt; 75 - First mounting shaft; 76 - Second mounting shaft; 77 - Mounting plate;

[0030] 8 - Height adjustment structure; 81 - Adjusting rod; 82 - Roller seat; 83 - Roller; 84 - Adjusting frame; 85 - Adjusting nut; 841 - Horizontal plate; 842 - Vertical plate. Detailed implementation manner

[0031] In order to enable the personnel in the technical field to better understand the technical solutions in the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0032] See Figures 1-6 , a traction device for plastic straw production, including a workbench 1. The workbench 1 includes a long strip-shaped tabletop and legs. A plurality of traction structures for pulling the plastic straw 100 to move longitudinally along the workbench 1 are arranged on the tabletop of the workbench 1. By simultaneously pulling different parts of the plastic straw through a plurality of traction structures, deformation of the plastic straw during traction can be prevented. Each traction machine structure includes a guide rail 2, a slider 3, a fixed block 4, a first driving mechanism 5, a guide tube 6, a second driving mechanism 7, and a height adjustment structure 8. Two parallel horizontal guide rails 2 are arranged longitudinally on the workbench 1. Two sliders 3 are symmetrically arranged on the two guide rails 2. A first driving mechanism 5 for driving the two sliders 3 to reciprocate on the two guide rails 2 is arranged between the two guide rails 2. Fixed blocks 4 are arranged on the two sliders 3. A horizontally penetrating pipe hole 41 is arranged in the fixed block 4 and penetrates through from front to back. Two guide holes 42 are symmetrically arranged on both side faces of the fixed block 4. The two guide holes 42 are respectively communicated with the pipe hole 41 inside the fixed block 4. Two guide tubes 6 are symmetrically arranged in the two guide holes 42. The two guide tubes 6 touch and suck the plastic straw by moving towards the middle, and follow the fixed block 4 and the slider as a whole to be conveyed forward along the guide rail 2. The method of sucking and clamping the plastic straw will not wear and damage the straw, and the conveying safety is good. At the same time, it can adapt to the sucking, traction and conveying of straws with various diameters. Two second driving mechanisms 7 for driving the guide tubes 6 to horizontally reciprocate in the guide holes 42 are arranged at the outer ends of each guide hole 42. A height adjustment structure 8 for adjusting the traction height of the plastic straw 100 is arranged below the middle part of the pipe hole 4. The traction height of the plastic straw 100 can be adjusted through the height adjustment structure 8 to adapt to the adjustment of the conveying height of plastic straws with different diameters and ensure the stability of conveying.

[0033] In this embodiment, see Figure 1 , 2, the first driving mechanism 5 includes a first motor 51, a rotating connecting rod 52, a swinging connecting rod 53, a guiding connecting rod 54, a motor base 55, and a connecting plate 56. The motor base 55 is arranged at the bottom of the workbench 1. The first motor 51 is vertically arranged on the motor base 55. The output shaft of the first motor 51 extends upward through the workbench 1 to the upper part of the workbench 1. A horizontal rotating connecting rod 52 is arranged at the upper end of the output shaft of the first motor 51. One end of the rotating connecting rod 52 is fixedly connected to the output shaft of the first motor 51, and the other end of the rotating connecting rod 52 is horizontally hinged to one end of the swinging connecting rod 53. The swinging connecting rod 53 is located above the rotating connecting rod 52. The other end of the swinging connecting rod 53 is horizontally hinged to one end of the guiding connecting rod 54. The other end of the guiding connecting rod 54 is vertically and fixedly connected to the middle of the connecting plate 56. Both ends of the connecting plate 56 are respectively fixedly connected to the two sliders 3. By driving the rotating connecting rod 52 to rotate through the first motor 51, one end of the swinging connecting rod 53 is driven to swing left and right, and the other end of the swinging connecting rod 53 drives the guiding connecting rod 54 to move back and forth, so that the slider 3 reciprocally slides on the guide rail 2 in a guided manner.

[0034] In this embodiment, refer to Figure 1 , 4 , 5, each second driving mechanism 7 includes a second driving motor 71, a driving pulley 72, a driven pulley 73, a transmission belt 74, a first mounting shaft 75, a second mounting shaft 76, and a mounting plate 77. The mounting plate 77 is vertically arranged on the side surface of the fixed block 4. Two bearing mounting holes are horizontally spaced on the front end surface of the mounting plate 77. A bearing 771 is arranged in each bearing mounting hole. One end of the first mounting shaft 75 is rotatably connected in one of the bearing holes, and the other end of the first mounting shaft 75 is horizontally suspended. One end of the second mounting shaft 76 is rotatably connected in the other bearing hole, and the other end of the second mounting shaft 76 is horizontally suspended. The suspended end of the first mounting shaft 75 is coaxially fixed with the driving pulley 72, and the suspended end of the second mounting shaft 76 is coaxially fixed with the driven pulley 73. The fixed end of the first mounting shaft 75 passes through the mounting plate 77 and extends to the rear side thereof. The second driving motor 71 is arranged on the rear side surface of the mounting plate 77. The output shaft of the second driving motor 71 is coaxially and fixedly connected to the extended end of the first mounting shaft 75. The driving pulley 72 and the driven pulley 73 are connected by the transmission belt 74 for synchronous transmission. The outer surface of the transmission belt 74 is attached to the outer wall of the guiding tube 6 for installation. By driving the driving pulley 72 to rotate through the second driving motor 71, the driving pulley 72 drives the driven pulley 73 to rotate synchronously through the transmission belt 74. The guiding tube 6 is clamped by the upper and lower transmission belts 74 to move in a guided manner in the guiding hole 42.

[0035] In this embodiment, refer to Figure 1 , 3, the outer end of each guiding tube 6 is connected to a vacuum pump 62 arranged on the workbench 1 through an air delivery hose 61. An electromagnetic valve 64 is arranged on the air delivery hose 61. The air in the guiding tube 6 is evacuated by the vacuum pump 62 to form a negative pressure environment in the guiding tube 6. The suction port at the front end of the guiding tube 6 contacts the plastic straw and adsorbs the straw to move it.

[0036] In this embodiment, refer to Figure 6 , the height adjustment structure 8 includes an adjustment rod 81, a roller seat 82, a roller 83, an adjustment bracket 84, and an adjustment nut 85. A vertical adjustment hole 43 is provided in the middle of the pipe-passing hole 41. The adjustment hole 43 penetrates to the bottom of the fixed block 4. The adjustment rod 81 is vertically inserted into the adjustment hole 43. The upper end of the adjustment rod 81 is welded and fixed to the roller seat 82. The roller 83 is rotatably installed on the roller seat 82. The roller 83 is a cylindrical rotating body with a gradually increasing diameter from the middle to both ends. The roller 83 is used to rotatably support the forward and backward movement of the plastic straw. An adjustment bracket 84 is provided at the lower end of the adjustment rod 81. The U-shaped bending plate is a U-shaped bending plate, which is composed of a horizontal plate 841 and two vertical plates 842. The two vertical plates 842 are respectively arranged at both ends of the horizontal plate 841. The horizontal plate 841 is fixedly connected to the lower ends of the two vertical plates 842 respectively. The upper ends of the two vertical plates 842 are respectively fixedly connected to the fixed block 4. A vertical guiding through hole is processed in the middle of the horizontal plate 841. External threads are provided on the outer wall of the lower end of the adjustment rod 81. The lower end of the adjustment rod 81 is inserted into the guiding through hole. Two adjustment nuts 85 are arranged on the adjustment rod 81 on both the upper and lower sides of the horizontal plate 842 to fixedly connect the adjustment rod 81 and the horizontal plate 841. When it is necessary to adjust and increase the height of the plastic straw 100, the adjustment nuts 85 are manually screwed downward simultaneously to raise the position of the adjustment rod 81, and the roller 83 jacks up the plastic straw 100 to increase its position. When it is necessary to adjust and lower the height of the plastic straw 100, the adjustment nuts 85 are manually screwed upward simultaneously to lower the position of the adjustment rod 81, and the roller 83 releases the plastic straw 100 to lower its position to realize the adjustment of the height of the plastic straw 100.

[0037] In this embodiment, refer to Figure 3 , 6 , a suction nozzle 63 is provided at the front end of each guiding tube 6. The suction nozzle 63 is made of silica gel, and the shape of the suction nozzle 63 is a tapered neck-down. The diameter of the plastic straw 100 is twenty times the diameter of the suction port of the suction nozzle 63. By designing a smaller suction nozzle opening and using a soft silica gel material, the suction nozzle 63 can stably adsorb the outer wall of the plastic straw 100.

[0038] As can be seen from the above technical solutions, during use, refer to Figures 1-6, insert the plastic straw 100 into the pipe holes 41 of each traction structure. Control the second driving mechanisms 7 on both sides by the controller to clamp the two guide pipes 6 and move them towards the middle until the front ends of the guide pipes 6 touch the side walls of the plastic straw 100. At the same time, control the vacuum pump 62 by the controller to evacuate the air in the guide pipes 6 to create a negative pressure environment in the guide pipes 6, so that the suction ports of the two guide pipes 6 adsorb the plastic straw 100 from both sides. Then, control the first motor 51 by the controller to drive the rotating link 52 to rotate, driving one end of the swinging link 53 to swing left and right. The other end of the swinging link 53 drives the guiding link 54 to move forward, causing the slider 3 to move forward on the guide rail 2 and drive the fixed block 4 to move forward. The fixed block 4 drives the plastic straw 100 to move forward a certain distance. When the slider 3 moves to the front end, control the solenoid valve by the controller to block the evacuation of the air in the guide pipes 6 by the vacuum pump 62, so that the suction ports of the two guide pipes 6 stop adsorbing the plastic straw 100 from both sides. At the same time, control the second driving mechanisms 7 on both sides by the controller to clamp the two guide pipes 6 and move them to both sides by a certain displacement, away from the plastic straw 100. At the same time, control the first motor 51 by the controller to drive the rotating link 52 to rotate, driving one end of the swinging link 53 to swing left and right. The other end of the swinging link 53 drives the guiding link 54 to move backward, causing the slider 3 to move backward on the guide rail 2 and drive the fixed block 4 to move backward until the slider 3 moves to the rear end. Repeat the above steps to clamp the guide pipes 6 to adsorb the plastic straw 100 and drive the plastic straw 100 to move forward.

[0039] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the utility model disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include the common general knowledge or conventional technical means in the technical field not disclosed in the present invention. The specification and embodiments are only regarded as exemplary, and the true scope of the present invention is pointed out by the claims.

[0040] It should be understood that the present invention is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention.

Claims

1. A traction device for plastic straw production, comprising a workbench (1), characterized in that: A plurality of traction structures for pulling the plastic straw (100) to move longitudinally along the workbench (1) are arranged on the workbench (1). Each traction structure includes a guide rail (2), a slider (3), a fixed block (4), a first driving mechanism (5), a guide tube (6), a second driving mechanism (7), and a height adjusting structure (8). Two guide rails (2) are arranged longitudinally on the workbench (1). Two sliders (3) are arranged on the two guide rails (2). A first driving mechanism (5) for driving the two sliders (3) to reciprocate on the two guide rails (2) is arranged between the two guide rails (2). Fixed blocks (4) are arranged on the two sliders (3). A pipe-passing hole (41) is arranged inside the fixed block (4). Two guide holes (42) are symmetrically arranged on both side faces of the fixed block (4). The two guide holes (42) are respectively communicated with the pipe-passing hole (41) inside the fixed block (4). Two guide tubes (6) are symmetrically arranged in the two guide holes (42). Two second driving mechanisms (7) for driving the guide tubes (6) to horizontally guide and reciprocate in the guide holes (42) are arranged at the outer ends of each guide hole (42). A height adjusting structure (8) for adjusting the traction height of the plastic straw (100) is arranged below the middle part of the pipe-passing hole (41).

2. The traction device for plastic straw production according to claim 1, characterized in that, The first driving mechanism (5) includes a first motor (51), a rotating connecting rod (52), a swinging connecting rod (53), a guiding connecting rod (54), a motor seat (55), and a connecting plate (56). The motor seat (55) is arranged at the bottom of the workbench (1). The first motor (51) is arranged on the motor seat (55). The output shaft of the first motor (51) passes through the workbench (1) and is fixedly connected to one end of the rotating connecting rod (52). The other end of the rotating connecting rod (52) is horizontally hinged to one end of the swinging connecting rod (53). The other end of the swinging connecting rod (53) is horizontally hinged to one end of the guiding connecting rod (54). The other end of the guiding connecting rod (54) is fixedly connected to the connecting plate (56). Both ends of the connecting plate (56) are respectively fixedly connected to the two sliders (3).

3. The traction device for plastic straw production according to claim 1, characterized in that, Each of the second driving mechanisms (7) includes a second driving motor (71), a driving pulley (72), a driven pulley (73), a transmission belt (74), a first mounting shaft (75), a second mounting shaft (76), and a mounting plate (77). The mounting plate (77) is arranged on the side surface of the fixed block (4). The first mounting shaft (75) and the second mounting shaft (76) are arranged at intervals on the front side surface of the mounting plate (77). One ends of the first mounting shaft (75) and the second mounting shaft (76) are respectively rotatably connected to bearings in corresponding mounting holes on the mounting plate (77), and the other ends are horizontally suspended. The suspended end of the first mounting shaft (75) is fixedly provided with the driving pulley (72), and the suspended end of the second mounting shaft (76) is fixedly provided with the driven pulley (73). The second driving motor (71) is arranged at the rear side of the mounting plate (77) and connected to the first mounting shaft (75). The driving pulley (72) and the driven pulley (73) are connected by the transmission belt (74).

4. The traction device for plastic straw production according to claim 1, characterized in that, The rear end of each of the guide pipes (6) is connected to a vacuum pump (62) arranged on the workbench (1) through an air delivery hose (61).

5. A traction device for plastic straw production according to claim 1, characterized in that, The height adjustment structure (8) includes an adjustment rod (81), a roller seat (82), a roller (83), an adjustment bracket (84), and an adjustment nut (85). An adjustment hole (43) is arranged in the middle of the pipe passing hole (41). The adjustment rod (81) is inserted into the adjustment hole (43). A roller seat (82) is arranged at the upper end of the adjustment rod (81). A roller (83) for rotatably supporting the plastic straw is arranged on the roller seat (82). An adjustment bracket (84) is arranged at the lower end of the adjustment rod (81). The adjustment bracket (84) is U-shaped. Both ends of the adjustment bracket (84) are fixed to the bottom of the fixed block (4). The lower end of the adjustment rod (81) is fixed to the middle of the adjustment bracket (84) through two adjustment nuts (85).

6. The traction device for plastic straw production according to claim 1, characterized in that, A suction nozzle (63) is arranged at the front end of each of the guide pipes (6).

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