Winding machine for plastic woven bags

Abstract

The utility model discloses a winding machine for a plastic woven bag. Comprising an L-shaped support, a rolling hollow shaft with one end rotationally connected with the side wall of the L-shaped support, a rotating device for driving the rolling hollow shaft to rotate, a rolling barrel slidably arranged on the rolling hollow shaft in a sleeving mode, a pair of long-strip-shaped holes formed in the side wall of the rolling hollow shaft and communicated with the interior of the rolling hollow shaft, and a pair of long-strip-shaped plates slidably inserted into the two long-strip-shaped holes correspondingly. The two pairs of fixed clamping plates are fixed to the two long strip plates correspondingly, the two pairs of fixed clamping grooves are formed in the two ends of the winding barrel correspondingly and used for clamping the fixed clamping plates, the sliding rod slides in the winding hollow shaft and is coaxial with the winding hollow shaft, and the sliding device drives the sliding rod to slide relative to the winding hollow shaft. One end of each first connecting rod is hinged to the side wall of the corresponding sliding rod, and the other end of each first connecting rod is hinged to one side of the corresponding long-strip-shaped plate. The woven bag winding device has the following advantages and effects that the effect of safely and stably fixing the winding drum to wind woven bags is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of woven bag production equipment, in particular to a winding machine for plastic woven bags. Background Art

[0002] Woven bags, also known as snakeskin bags, are a type of plastic bag used for packaging. Their raw materials are generally various chemical plastic raw materials such as polyethylene and polypropylene. At present, in the early stage of plastic woven bag production, woven bags are usually cylindrical strips. In order to facilitate the transportation and storage of plastic woven bags, it is often necessary to use a winder to wind the woven bags. The winding method of most existing woven bag winders is to set the winding drum on the air shaft in the winder, and then the inflation device in the winder will fill the air shaft with high-pressure gas, so that the key strip on the surface of the air shaft protrudes, and then the winding drum is tightened and fixed on the air shaft. Finally, the driving unit of the winder drives the air shaft and the winding drum to rotate, and the woven bag can be automatically wound. However, in actual use, the above-mentioned air shaft is not only easy to wear the inner wall of the winding drum, resulting in a decrease in the service life of the woven bag winding drum, but also the air shaft is affected by factors such as ambient temperature and pressure, and is also very easy to leak, causing the tension to decrease, thereby causing the winding drum to slip and the winding center to shift. Problems. Utility Model Content

[0003] The utility model aims to provide a winding machine for plastic woven bags, which has the effect of safely and stably fixing the winding drum to wind up the woven bags.

[0004] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a winding machine for plastic woven bags, comprising an L-shaped bracket, a winding hollow shaft with one end rotatably connected to the side wall of the L-shaped bracket, a rotating device for driving the winding hollow shaft to rotate, a winding drum slidably sleeved on the winding hollow shaft, a pair of long holes opened on the side wall of the winding hollow shaft and connected to the interior thereof, a pair of long plates slidably inserted into the two long holes, two pairs of fixed clamping plates respectively fixed on the two long plates, two pairs of fixed card grooves respectively opened at both ends of the winding drum and for the fixed clamping plates to be clamped in, a sliding rod sliding inside the winding hollow shaft and coaxial with the winding hollow shaft, a sliding device driving the sliding rod to slide relative to the winding hollow shaft, and two pairs of connecting rods one end of which is hingedly connected to the side wall of the sliding rod and the other end is hingedly connected to one side of the two long plates.

[0005] The utility model is further configured as follows: a long groove is provided on one side of the long plate facing the outside of the long hole, the fixed card plate slides in the long groove, a pin hole is provided on the fixed card plate, the long hole is located on the two inner side walls of the long groove and a plurality of pairs of positioning holes are evenly provided, and each pair of positioning holes can be aligned with the two ends of the pin hole respectively, the pin hole is plugged with a pin shaft passing through a pair of positioning holes on both sides of the long groove, and the two ends of the pin shaft are in parallel contact with the two inner side walls of the long hole.

[0006] The utility model is further configured as follows: the fixed card plate is in a right-angle trapezoidal shape, and its inclined surface faces the bottom of the fixed card slot, and the bottom of the fixed card slot is provided with a chamfer that can parallelly contact the inclined surface of the fixed card plate.

[0007] The utility model is further configured as follows: the rotating device includes a worm wheel fixed to one end of the winding hollow shaft, a three-phase asynchronous motor fixed to an L-shaped bracket, and a worm fixed to an output end of the three-phase asynchronous motor and meshing with the worm wheel.

[0008] The utility model is further configured as follows: a cavity is opened inside the L-shaped bracket, the worm wheel and the worm are located in the cavity for meshing transmission, one end of the winding hollow shaft rotates through the side wall of the L-shaped bracket, and is connected to the worm wheel through the cavity, the three-phase asynchronous motor is fixed to the top of the L-shaped bracket, and the output end rotates from the top of the L-shaped bracket into the cavity to connect to the worm.

[0009] The utility model is further configured as follows: the sliding device includes a cylinder 1 fixed on an L-shaped bracket, a connecting hole opened on the head of the piston rod of the cylinder 1, a positioning ring fixed by a screw at the opening of the connecting hole, and a connecting head fixed at one end of the sliding rod; the winding hollow shaft passes through one end of the side wall of the L-shaped bracket and is provided with a through hole connected to the interior thereof; the piston rod of the cylinder 1 rotates through the through hole to enter the interior of the winding hollow shaft, and the connecting head at the end of the sliding rod is movably inserted into the connecting hole of the piston rod head; the inner diameter of the positioning ring is the same as the diameter of the sliding rod, and is smaller than the inner diameter of the connecting hole or the diameter of the connecting head.

[0010] The utility model is further configured as follows: a support tube is fixedly arranged at one end of the interior of the winding hollow shaft, and one end of the sliding rod away from the second piston rod of the cylinder is movably inserted into the support tube.

[0011] The utility model is further configured as follows: a rotating support device is provided below the suspended end of the L-shaped bracket, the rotating support device comprises a pair of flip arms hingedly connected to the L-shaped bracket at one end, a pair of support rollers rotatably installed on the other ends of the two flip arms, and a flip assembly that drives the two flip arms to close together or flip apart, and the two support rollers support and contact the end of the winding hollow shaft when the two flip arms are closed.

[0012] The utility model is further configured as follows: the flip assembly includes two cylinders vertically fixed on an L-shaped bracket, and a pair of two connecting rods, one end of which is hingedly connected to the head of the piston rod of the two cylinders and the other end of which is hingedly connected to one side of the two flip arms.

[0013] The utility model is further configured as follows: a protective cover for protecting cylinder 2 is fixedly arranged on the L-shaped bracket, one end of the flip arm is hingedly connected to the top of the protective cover, and the piston rod of cylinder 2 passes through the top of the protective cover and is hingedly connected to connecting rod 2.

[0014] The beneficial effect of the utility model is that by adopting the above technical scheme, when it is necessary to roll up the tubular woven bag, the flip assembly is first used to control the two flip walls to flip separately at a certain angle, so that the staff can take down the rolled-up winding drum from the suspended end and insert a new winding drum, and then manually adjust the position of the new winding drum on the winding hollow shaft so that the fixed card slots at both ends of the new winding drum and the fixed card plates in the long strip holes of the winding hollow shaft are aligned, and then the cylinder is started to extend the piston rod, so that the connecting hole at the head of the piston rod pushes the connecting head and the sliding rod relative to the winding hollow shaft. Internal sliding, since the sliding rod and the long strip plate in the long strip hole are hingedly connected with a connecting rod, the long strip hole will expand and contract relative to the inside of the long strip hole under the sliding of the sliding rod, and push the pair of fixed clamping plates fixed thereon to be respectively clamped into the fixed clamping grooves of the two winding drums, thereby fixing the winding drum, and finally the flip assembly is closed again, so that the two supporting rollers jointly support the suspended end of the winding hollow shaft, and at the same time the three-phase asynchronous motor starts to drive the worm to rotate and engage the worm wheel, so that the worm wheel drives the winding hollow shaft and the winding drum to rotate and reel in the shape of a winding drum. The above-mentioned clamping plate and clamping slot type winding drum fixing method not only does not cause wear to the inner wall of the winding drum, but also has a simple and stable structure, and the winding drum after being fixed is not prone to slipping, winding center deviation and other problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 Schematic diagram of the three-dimensional structure of this embodiment;

[0017] Figure 2 Schematic diagram of the structure of the rotating device of this embodiment;

[0018] Figure 3 Schematic diagram of the internal structure of the winding hollow shaft of this embodiment;

[0019] Figure 4 Schematic diagram of the connection between the long strip and the fixed card board of this embodiment;

[0020] In the figure, 1, L-shaped bracket; 11, cavity; 12, protective cover; 2, winding hollow shaft; 21, long hole; 22, through hole; 23, support tube; 3, rotating device; 31, worm gear; 32, three-phase asynchronous motor; 33, worm; 4, winding drum; 41, fixed slot; 5, long plate; 51, long groove; 52, positioning hole; 6, fixed card plate; 61, pin hole; 62, pin shaft; 7, sliding rod; 8, sliding device; 81, cylinder one; 82, connecting hole; 83, positioning ring; 84, connector; 9, connecting rod one; 10, rotating support device; 101, flip arm; 102, supporting roller; 103, flip assembly; 103a, cylinder two; 103b, connecting rod two. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment: A winding machine for plastic woven bags, such as Figure 1-4 As shown, it includes an L-shaped bracket 1, a winding hollow shaft 2 whose one end is rotatably connected to the side wall of the L-shaped bracket 1, a rotating device 3 for driving the winding hollow shaft 2 to rotate, a winding drum 4 slidably sleeved on the winding hollow shaft 2, a pair of long holes 21 opened on the side wall of the winding hollow shaft 2 and connected to the interior thereof, a pair of long strip plates 5 slidably inserted into the two long strip holes 21, two pairs of fixed clamping plates 6 respectively fixed on the two long strip plates 5, two pairs of fixed clamping grooves 41 respectively opened at both ends of the winding drum 4 and for the fixed clamping plates 6 to be clamped in, a sliding rod 7 sliding inside the winding hollow shaft 2 and coaxial with the winding hollow shaft 2, a sliding device 8 driving the sliding rod 7 to slide relative to the winding hollow shaft 2, and two pairs of connecting rods 9, one end of which is hingedly connected to the side wall of the sliding rod 7 and the other end of which is hingedly connected to one side of the two long strip plates 5.

[0023] Furthermore, a long groove 51 is provided on one side of the long plate 5 facing the outside of the long hole 21, and the fixed card plate 6 slides in the long groove 51. A pin hole 61 is provided on the fixed card plate 6. The long hole 21 is located on the two inner side walls of the long groove 51 and a plurality of pairs of positioning holes 52 are evenly provided, and each pair of positioning holes 52 can be aligned with the two ends of the pin hole 61 respectively. The pin hole 61 is plugged with a pin shaft 62 passing through a pair of positioning holes 52 on both sides of the long groove 51, and the two ends of the pin shaft 62 are in parallel contact with the two inner side walls of the long hole 21; the fixed card plate 6 is in a right-angled trapezoid, and its inclined surface faces the bottom of the fixed card slot 41, and the bottom of the fixed card slot 41 is provided with a chamfer that can parallelly contact the inclined surface of the fixed card plate 6.

[0024] By adopting the connection relationship between the long strip board 5 and the fixed card board 6, and the structure of the fixed card board 6, when it is necessary to fix and install the winding drum 4 of different lengths, the sliding device 8 is first used to drive the sliding rod 7 to slide relative to the inside of the winding hollow shaft 2. Since the sliding rod 7 and the long strip board 5 are hingedly connected with the connecting rod 2 103b, the long strip board 5 will slide relatively in the long strip hole 21 under the sliding of the sliding rod 7. Then, after the long strip board 5 extends out of the long strip hole 21, the positioning holes on both sides of the long strip board 5 are used to adjust the position of the long strip board 5. By pulling out the pin 62 from 52, the fixation of the fixed card plate 6 can be released, and then the positions of the two fixed card plates 6 in the long groove 51 are manually adjusted so that the pin holes 61 on the two fixed card plates 6 are aligned with the pair of positioning holes 52 on the long plate 5, while ensuring that the spacing between the two fixed card plates 6 is consistent with the spacing between the fixed card grooves 41 at both ends of the winding drum 4, and finally, the pin 62 is reinserted into the positioning hole 52 and the pin hole, and the long plate 5 is returned to the long hole 21, so that the adaptive adjustment of the length of the winding drum 4 can be completed.

[0025] Among them, if the spacing between the fixed slots 41 at both ends of the winding drum 4 is larger than the spacing between the fixed clips 6 on the long board 5, although the fixed clips 6 cannot be completely embedded in the fixed slots 41, the inclined surfaces of the two fixed clips 6 will still contact the chamfers of the fixed slots 41 at both ends of the winding drum 4, and during the contact process, the winding drum 4 will be continuously clamped and fixed, thereby compensating for the difference in the two spacings and effectively ensuring that the above structure is fully adapted to the fixed installation of winding drums 4 of different lengths.

[0026] Furthermore, the rotating device 3 includes a worm wheel 31 fixed to one end of the winding hollow shaft 2, a three-phase asynchronous motor 32 fixed to the L-shaped bracket 1, and a worm 33 fixed to the output end of the three-phase asynchronous motor 32 and meshing with the worm wheel 31; a cavity 11 is provided inside the L-shaped bracket 1, and the worm wheel 31 and the worm 33 are located in the cavity 11 for meshing transmission, one end of the winding hollow shaft 2 rotates through the side wall of the L-shaped bracket 1, and is connected to the worm wheel 31 through the part of the cavity 11, and the three-phase asynchronous motor 32 is fixed to the top of the L-shaped bracket 1, and the output end rotates from the top of the L-shaped bracket 1 into the cavity 11 to connect with the worm 33. By adopting the cavity 11 structure, not only can the transmission safety of the worm wheel 31 and the worm wheel 31 in the rotating device 3 be protected, but also the installation space on the L-shaped bracket 1 can be saved to a certain extent.

[0027] Furthermore, the sliding device 8 includes a cylinder 1 81 fixed on the L-shaped bracket 1, a connecting hole 82 opened at the head of the piston rod of the cylinder 1 81, a positioning ring 83 fixed at the opening of the connecting hole 82 by a screw, and a connector 84 fixed at one end of the sliding rod 7. One end of the winding hollow shaft 2 passing through the side wall of the L-shaped bracket 1 is provided with a through hole 22 connected to the interior thereof. The piston rod of the cylinder 1 81 rotates through the through hole 22 to enter the interior of the winding hollow shaft 2, and the connector 84 at the end of the sliding rod 7 is movably inserted into the connecting hole 82 at the head of the piston rod. The inner diameter of the positioning ring 83 is the same as the diameter of the sliding rod 7, and is smaller than the inner diameter of the connecting hole 82 or the diameter of the connector 84. Among them, a support tube 23 is fixedly provided at one end of the interior of the winding hollow shaft 2, and one end of the sliding rod 7 away from the piston rod of the cylinder 2 103a is movably inserted into the support tube 23, which can improve the sliding stability of the sliding rod 7 to ensure the stable operation of the device.

[0028] Furthermore, a rotating support device 10 is provided below the suspended end of the winding hollow shaft 2 in the L-shaped bracket 1, and the rotating support device 10 includes a pair of flip arms 101 hingedly connected to the L-shaped bracket 1 at one end, a pair of support rollers 102 rotatably installed on the other ends of the two flip arms 101, and a flip component 103 that drives the two flip arms 101 to close or flip each other, and the two support rollers 102 support and contact the end of the winding hollow shaft 2 when the two flip arms 101 are closed; the flip component 103 includes a cylinder 103a vertically fixed on the L-shaped bracket 1, and a pair of connecting rods 103b whose one ends are hingedly connected to the piston rod heads of the cylinders 103a and the other ends are hingedly connected to one side of the two flip arms 101. By adopting the above-mentioned flipping assembly 103, when the cylinder 103a extends and retracts its internal piston rod, since one end of the two connecting rods 103b is hinged to the piston rod head, and the other end is hinged to the two flipping arms 101 respectively, under the movement of the piston rod, the two connecting rods 103b will expand upward or clamp downward between the two flipping arms 101, and during this movement, the two flipping arms 101 are driven to achieve the effect of closing or separating and flipping.

[0029] Furthermore, a protective cover 12 for protecting the second cylinder 103a is fixedly arranged on the L-shaped bracket 1, one end of the flip arm 101 is hingedly connected to the top of the protective cover 12, and the piston rod of the second cylinder 103a passes through the top of the protective cover 12 and is hingedly connected to the second connecting rod 103b. By adopting the above protective cover 12, not only can the working safety of the second cylinder 103a be effectively protected, but also the flipping activity of the flip arm 101 can be stably supported.

[0030] The working principle of this embodiment:

[0031] When it is necessary to take up the woven bag in the form of a winding drum 4, the turning assembly 103 is first used to control the two turning walls to turn apart at a certain angle, so that the staff can take down the winding drum 4 from the suspended end and insert a new winding drum 4. Then, the position of the new winding drum 4 on the winding hollow shaft 2 is manually adjusted so that the fixed card slots 41 at both ends of the new winding drum 4 are aligned with the fixed card plates 6 in the long strip holes 21 of the winding hollow shaft 2. Then, the cylinder 1 81 is started to extend the piston rod, so that the connecting hole 82 at the head of the piston rod pushes the connecting head 84 and the sliding rod 7 to slide relative to the inside of the winding hollow shaft 2. The long strips 5 in the 1 are hingedly connected with a connecting rod 9, so when the sliding rod 7 slides, the long strip hole 21 will expand and contract relative to the inside of the long strip hole 21, and push the pair of fixed clamping plates 6 fixed thereon to be respectively clamped into the fixed clamping grooves 41 of the two winding drums 4, thereby fixing the winding drum 4, and finally the flip assembly 103 is closed again, so that the two supporting rollers 102 jointly support the suspended end of the winding hollow shaft 2, and at the same time the three-phase asynchronous motor 32 starts to drive the worm 33 to rotate and engage the worm wheel 31, so that the worm wheel 31 drives the winding hollow shaft 2 and the winding drum 4 to rotate the winding drum 4-shaped woven bag. The above-mentioned clamping plate and clamping groove type winding drum 4 fixing method not only does not cause wear to the inner wall of the winding drum 4, but also has a simple and stable structure, and the winding drum 4 after fixing is not prone to slipping, winding center deviation and other problems.

Claims

1. A winding machine for plastic woven bags, characterized in that: The invention comprises an L-shaped bracket (1), a winding hollow shaft (2) with one end rotatably connected to the side wall of the L-shaped bracket (1), a rotating device (3) for driving the winding hollow shaft (2) to rotate, a winding drum (4) slidably sleeved on the winding hollow shaft (2), a pair of long holes (21) opened on the side wall of the winding hollow shaft (2) and connected to the inside thereof, a pair of long plates (5) respectively slidably inserted into the two long holes (21), and two pairs of long plates (5) respectively fixed on the two long plates (5). A fixed card plate (6), two pairs of fixed card slots (41) respectively provided at the two ends of the winding drum (4) and for the fixed card plate (6) to be clamped in, a sliding rod (7) sliding inside the winding hollow shaft (2) and coaxial with the winding hollow shaft (2), a sliding device (8) driving the sliding rod (7) to slide relative to the winding hollow shaft (2), and two pairs of connecting rods (9) having one end hingedly connected to the side wall of the sliding rod (7) and the other end hingedly connected to one side of the two long strips (5).

2. A winding machine for plastic woven bags according to claim 1, characterized in that: The long plate (5) is provided with a long groove (51) on one side facing the long hole (21), the fixed card plate (6) slides in the long groove (51), the fixed card plate (6) is provided with a pin hole (61), the long hole (21) is located on the two inner side walls of the long groove (51) and a plurality of pairs of positioning holes (52) are evenly provided, and each pair of positioning holes (52) can be aligned with the two ends of the pin hole (61), and the pin hole (61) is plugged with a pin shaft (62) passing through a pair of positioning holes (52) on both sides of the long groove (51), and the two ends of the pin shaft (62) are in parallel contact with the two inner side walls of the long hole (21).

3. A winding machine for plastic woven bags according to claim 2, characterized in that: The fixed clamping plate (6) is in the shape of a right-angled trapezoid, and its inclined surface faces the bottom of the fixed clamping slot (41). The bottom of the fixed clamping slot (41) is provided with a chamfer that can parallelly contact the inclined surface of the fixed clamping plate (6).

4. A winding machine for plastic woven bags according to claim 1, characterized in that: The rotating device (3) comprises a worm wheel (31) fixed to one end of the winding hollow shaft (2), a three-phase asynchronous motor (32) fixed to the L-shaped bracket (1), and a worm (33) fixed to the output end of the three-phase asynchronous motor (32) and meshing with the worm wheel (31).

5. A winding machine for plastic woven bags according to claim 4, characterized in that: The L-shaped bracket (1) has a cavity (11) formed therein, the worm wheel (31) and the worm (33) are arranged in the cavity (11) for meshing transmission, one end of the winding hollow shaft (2) rotates through the side wall of the L-shaped bracket (1) and is connected to the worm wheel (31) through the cavity (11), the three-phase asynchronous motor (32) is fixed to the top of the L-shaped bracket (1), and the output end rotates from the top of the L-shaped bracket (1) into the cavity (11) to be connected to the worm (33).

6. A winding machine for plastic woven bags according to claim 5, characterized in that: The sliding device (8) comprises a cylinder (81) fixed on an L-shaped bracket (1), a connecting hole (82) provided at the head of the piston rod of the cylinder (81), a positioning ring (83) fixed at the opening of the connecting hole (82) by a screw, and a connecting head (84) fixed at one end of the sliding rod (7); one end of the winding hollow shaft (2) passing through the side wall of the L-shaped bracket (1) is provided with a through hole (22) connected to the interior thereof; the piston rod of the cylinder (81) rotates through the through hole (22) to enter the interior of the winding hollow shaft (2); and the connecting head (84) at the end of the sliding rod (7) is movably plugged into the connecting hole (82) at the head of the piston rod; the inner diameter of the positioning ring (83) is the same as the diameter of the sliding rod (7) and is smaller than the inner diameter of the connecting hole (82) or the diameter of the connecting head (84).

7. A winding machine for plastic woven bags according to claim 1, characterized in that: A support tube (23) is fixedly arranged at one end of the interior of the winding hollow shaft (2), and one end of the sliding rod (7) away from the piston rod of the second cylinder (103a) is movably inserted into the support tube (23).

8. A winding machine for plastic woven bags according to claim 1, characterized in that: The L-shaped bracket (1) is provided with a rotating support device (10) located below one end of the winding hollow shaft (2) suspended in the air. The rotating support device (10) comprises a pair of flip arms (101) with one end hingedly connected to the L-shaped bracket (1), a pair of support rollers (102) rotatably mounted on the other ends of the two flip arms (101), and a flip assembly (103) for driving the two flip arms (101) to close together or flip apart. When the two flip arms (101) are closed together, the two support rollers (102) support and contact the ends of the winding hollow shaft (2).

9. A winding machine for plastic woven bags according to claim 8, characterized in that: The flip assembly (103) comprises a second cylinder (103a) vertically fixed on the L-shaped bracket (1), and a pair of second connecting rods (103b) having one end hingedly connected to the piston rod head of the second cylinder (103a) and the other end hingedly connected to one side of the two flip arms (101).

10. A winding machine for plastic woven bags according to claim 9, characterized in that: A protective cover (12) for protecting cylinder 2 (103a) is fixedly arranged on the L-shaped bracket (1); one end of the flip arm (101) is hingedly connected to the top of the protective cover (12); and the piston rod of cylinder 2 (103a) passes through the top of the protective cover (12) and is hingedly connected to connecting rod 2 (103b).

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