Full-automatic four-axis film winding machine

Abstract

The present application relates to a kind of full-automatic four-axis roll changing winding film machine, including two sides opposite rack plate, two groups of left and right opposite and present "ten" cross clamping plate are equipped between rack plate, four ends of clamping plate are respectively shaped with clamping hole, limit baffle ring is shaped on the inner wall of clamping hole near rack plate side, four groups of semicircular ring-shaped supporting plate are respectively shaped on the opposite end face of the two groups of clamping plate, and supporting plate is distributed between the clamping hole of clamping plate;The inner wall of supporting plate and the inner wall of clamping hole are in the same cylindrical surface;The middle part of two groups of clamping plate is inserted with transverse transverse spline shaft, and one end of spline shaft extends clamping plate and is fixed with the rotating shaft of first motor through coupling. Multiple film winding core rollers are provided on the present winding film machine, and film winding core roller can switch between film winding station and non-film winding station, so that winding film machine can quickly change roll winding, and winding film machine does not need to stop;Can effectively improve production efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of wrapping machines, and more specifically to a fully automatic four-axis roll-changing wrapping machine. Background Technology

[0002] Cast film is a thin film produced by extruding molten plastic from an extruder on a casting machine and stretching it at a certain speed. A typical casting machine is equipped with a corresponding stretch film machine. The cast film output from the casting machine is finally wound into a cylindrical shape by the core roller on the stretch film machine, and then the cast film is transported and stored in a cylindrical form. Current stretch wrapping machines are generally single-axis structures, which use a single core roller to wind the cast film. When the wound cast film reaches a certain diameter, the core roller needs to be replaced for a new winding. Although current single-axis stretch wrapping machines have automatic roller changing mechanisms, which are relatively convenient, the machine needs to be stopped during the disassembly and installation of the core roller. However, the preceding cast film machine continues to produce cast film, so stopping the stretch wrapping machine will have a certain impact on production. To reduce the impact, some have proposed setting up stretch wrapping machines with multiple core rollers. The core rollers can be moved to the winding station by changing stations to wind the cast film, and the completed core rollers can be moved to the changing station for disassembly and installation. In this way, the stretch wrapping machine does not need to be stopped. Therefore, a corresponding multi-roller station interchangeable winding structure needs to be designed. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a fully automatic four-axis wrapping film machine. This machine is equipped with multiple wrapping core rollers, which can switch between wrapping and non-wrapping positions, facilitating rapid film roll changes and effectively improving production efficiency. A fully automatic four-axis roll-changing stretch film machine includes two opposing frame plates. Between the frame plates are two sets of left- and right-opposing clamping plates arranged in a cross shape. Each clamping plate has clamping holes formed at its four ends. Limiting rings are formed on the inner wall of the clamping holes on the side closest to the frame plate. Four sets of semi-circular support plates are formed on the opposite end faces of the two clamping plates, distributed between the clamping holes. The inner walls of the support plates and the inner walls of the clamping holes are on the same cylindrical surface. A transverse splined shaft is inserted into the middle of the two clamping plates. One end of the splined shaft extends out of the clamping plate and is fixed to the shaft of a first motor via a coupling. The first motor is fixed to the outer wall of the frame plate. The other end of the splined shaft extends out of the clamping plate and is fitted with a splined sleeve, which is pivotally connected to the frame plate. A clamping execution assembly and a winding assembly are provided between the clamping plate and the frame plate. The clamping execution assembly includes a longitudinally rectangular push plate. A bushing is formed in the middle of the clamping plate. The bushing is connected to the middle of the push plate through a bearing. Transverse guide posts are provided at the front and rear ends of the push plate. One end of the guide post is inserted into the frame plate, and the other end is formed with a support shaft. The support shaft is inserted and fixed to the push plate and extends out of the push plate. It is connected to a limit stop wheel through a bearing. The limit stop wheel is distributed on the front and rear sides of the clamping holes on the front and rear sides of the clamping plate. A transverse clamping cylinder is fixed on the frame plate between the spline shaft and the guide post. The piston rod of the clamping cylinder passes through the frame plate and is fixed on the push plate. The winding assembly includes a conical clamping head opposite the clamping hole at the upper end of the clamping plate. A transverse, T-shaped prism is inserted and fixed on the clamping head. The prism is inserted into a circular rotating disk. A spring is sleeved on the prism between the rotating disk and the clamping head. The two ends of the spring press against the clamping head and the rotating disk, respectively. A rotating sleeve is formed on the end face of the rotating disk near the frame plate. The rotating sleeve extends out of the frame plate and is pivotally connected to a side-standing clamping plate. A transverse limiting shaft is inserted into the clamping plate and fixed to the frame plate. A transverse clamping cylinder is fixed to the upper part of the clamping plate, and the piston rod of the clamping cylinder is fixed to the frame plate. A second motor is provided on the winding assembly on one side of the clamping plate. The second motor is fixed to the clamping plate, and the rotating shaft of the second motor is fixedly connected to the rotating sleeve. Four sets of transverse film-winding core rollers are respectively inserted between the ends of the clamping plate. The two ends of the film-winding core rollers are respectively inserted into the clamping holes of the clamping plate, and the two end faces of the film-winding core rollers are respectively formed with conical holes opposite to the clamping heads.

[0004] Preferably, the prism on the winding assembly is a hexagonal prism, and the head of the prism is inserted into the rotating sleeve of the rotating disk. The central axis of the rotating sleeve, the central axis of the hexagonal prism, and the central axis of the clamping hole at the upper end of the clamping plate coincide. The diameter of the inner wall of the limiting ring in the clamping hole is not less than the maximum diameter of the outer wall of the clamping head.

[0005] Preferably, the rotating sleeve is connected to the clamping plate via a bearing, and a limiting sleeve is fixed to the rotating sleeve between the clamping plate and the frame plate, with the limiting sleeve abutting against the side wall of the clamping plate; the second motor on one side of the clamping plate abuts against the side end face of the rotating sleeve, and the shaft of the second motor is inserted into the rotating sleeve and connected to the rotating sleeve via a flat key; a T-shaped end cap is inserted and fixed to the end of the rotating sleeve on the other side of the clamping plate, with the end cap abutting against the side wall of the clamping plate.

[0006] Preferably, a sliding bearing is fixed to the frame plate, and a rotating sleeve is inserted into the sliding bearing.

[0007] Preferably, the diameter of the outer wall of the film core roller is equal to the diameter of the clamping hole on the clamping plate, and the stroke of the clamping cylinder on the clamping execution assembly is not less than the thickness of the clamping plate and not greater than the sum of the thickness of the clamping plate and the length of the support plate.

[0008] Preferably, the difference between the center distance from the guide post to the adjacent clamping hole on the clamping execution assembly and the outer radius of the limiting stop wheel is equal to the radius of the outer wall of the film core roller.

[0009] Preferably, the lower end face of the push plate abuts against two transverse positioning plates, which are distributed on the front and rear sides of the lower part of the clamping plate and fixed to the frame plate.

[0010] The beneficial effects of this invention are as follows: This stretch film machine is equipped with multiple core rollers, which can switch between wrapping and non-wrapping positions, facilitating quick film changes without requiring the machine to stop; this effectively improves production efficiency. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a partial cross-sectional view of the structure of the present invention from the frontal view; Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure at point AA.

[0012] In the diagram: 1. Frame plate; 2. Clamping plate; 3. Splined shaft; 4. First motor; 5. Clamping execution assembly; 6. Winding assembly; 7. Positioning clamping plate; 8. Film core roller; 9. Sliding bearing. Detailed Implementation

[0013] Example: See Figures 1 to 4As shown, a fully automatic four-axis roll-changing stretch film machine includes two opposing frame plates 1. Between the frame plates 1 are two sets of clamping plates 2 arranged in a cross shape, facing left and right. Clamping holes 21 are formed at each of the four ends of the clamping plates 21. Limiting rings 22 are formed on the inner wall of the clamping holes 21 near the frame plate 1. Four sets of semi-circular support plates 23 are formed on the opposite end faces of the two sets of clamping plates 2, distributed within the clamping holes 21 of the clamping plates 2. Between; the inner wall of the pallet 23 and the inner wall of the clamping hole 21 are in the same cylindrical surface; a transverse spline shaft 3 is inserted in the middle of the two clamping plates 2, one end of the spline shaft 3 extends out of the clamping plate 2 and is fixed to the shaft of the first motor 4 through a coupling. The first motor 4 is a drive motor used for switching the winding station. The first motor 4 is fixed on the outer side wall of the frame plate 1. The other end of the spline shaft 3 extends out of the clamping plate 2 and is fitted with a spline sleeve 9. The spline sleeve 9 is pivotally connected to the frame plate 1. A clamping execution assembly 5 and a winding assembly 6 are provided between the clamping plate 2 and the frame plate 1. The clamping execution assembly 5 includes a longitudinally rectangular push plate 51. A bushing is formed in the middle of the clamping plate 2, and a spline hole is formed inside the bushing. A spline shaft 3 is inserted into the spline hole of the bushing. The bushing is connected to the middle of the push plate 51 through a bearing. A transverse guide post 52 is provided at the front and rear ends of the push plate 51. One end of the guide post 52 is inserted into the frame plate 1, and the other end is formed with a support shaft 521. The support shaft 521 is inserted and fixed to the push plate 51 and extends out of the push plate 51. It is connected to a limit stop wheel 53 through a bearing. The limit stop wheel 53 is distributed on the front and rear sides of the clamping holes 21 on the front and rear sides of the clamping plate 2. A transverse clamping cylinder 54 is fixed on the frame plate 1 between the spline shaft 3 and the guide post 52. The piston rod of the clamping cylinder 54 is in the extended state and passes through the frame plate 1 and is fixed on the push plate 51. The winding assembly 6 includes a conical clamping head 61 opposite to the clamping hole 21 at the upper end of the clamping plate 2. A transverse, T-shaped prism 63 is inserted and fixed on the clamping head 61. The prism 63 is inserted into a circular rotating disk 62. A spring 64 is sleeved on the prism 63 between the rotating disk 62 and the clamping head 61. The two ends of the spring 64 press against the clamping head 61 and the rotating disk 62, respectively. A rotating sleeve 621 is formed on the end face of the rotating disk 62 near the frame plate 1. The rotating sleeve 621 extends out of the frame plate 1 and is pivotally connected to a side-standing clamping device. A horizontal limiting shaft 69 is inserted into the clamping plate 65 and fixed to the frame plate 1. A horizontal clamping cylinder 66 is fixed to the upper part of the clamping plate 65. The piston rod of the clamping cylinder 66 is in the extended state and fixed to the frame plate 1. A second motor 67 is provided on the winding assembly 6 on one side of the clamping plate 2. The second motor 67 is a motor that provides power for winding the cast film. The second motor 67 is fixed to the clamping plate 65, and the rotating shaft of the second motor 67 is fixedly connected to the rotating sleeve 621. Four sets of transverse film-winding core rollers 8 are respectively inserted between the ends of the clamping plate 2. The two ends of the film-winding core rollers 8 are respectively inserted into the clamping holes 21 of the clamping plate 2. The two end faces of the film-winding core rollers 8 are respectively formed with conical holes 81 opposite to the clamping head 61. The conical holes 81 match the clamping head 61.

[0014] The prism 63 on the winding assembly 6 is a hexagonal prism. The head of the prism 63 is inserted into the rotating sleeve 621 of the rotating disk 62. The central axis of the rotating sleeve 621, the central axis of the hexagonal prism, and the central axis of the clamping hole 21 at the upper end of the clamping plate 2 coincide. The diameter of the inner wall of the limiting ring 22 in the clamping hole 21 is not less than the maximum diameter of the outer wall of the clamping head 61.

[0015] The rotating sleeve 621 is connected to the clamping plate 65 via bearings. A limiting sleeve 68 is inserted and fixed on the rotating sleeve 621 between the clamping plate 65 and the frame plate 1. The limiting sleeve 68 abuts against the side wall of the clamping plate 65. The second motor 67 on one side of the clamping plate 2 abuts against the side end face of the rotating sleeve 621. The shaft of the second motor 67 is inserted into the rotating sleeve 621 and connected to the rotating sleeve 621 via a flat key. A T-shaped end cap 610 is inserted and fixed to the end of the rotating sleeve 621 on the other side of the clamping plate 2. The end cap 610 abuts against the side wall of the clamping plate 65. The above is the pivotal connection structure between the rotating sleeve 621 and the clamping plate 65.

[0016] A sliding bearing 611 is fixed on the frame plate 1, and a rotating sleeve 621 is inserted into the sliding bearing 611.

[0017] The diameter of the outer wall of the film-winding core roller 8 is equal to the diameter of the clamping hole 21 on the clamping plate 2. The stroke of the clamping cylinder 54 on the clamping execution component 5 is not less than the thickness of the clamping plate 2 and not greater than the sum of the thickness of the clamping plate 2 and the length of the support plate 23. Only with this size restriction can the film-winding core roller 8 set at the lower end of the clamping plate 2 be disengaged from the clamping plate 2.

[0018] The difference between the center distance from the guide post 52 to the adjacent clamping hole 21 on the clamping execution assembly 5 and the outer radius of the limiting stop wheel 53 is equal to the radius of the outer wall of the winding core roller 8.

[0019] The lower end face of the push plate 51 abuts against two horizontal positioning plates 7. The positioning plates 7 are distributed on the front and rear sides of the lower part of the clamping plate 2 and fixed on the frame plate 1.

[0020] Working principle: This invention is a fully automatic four-axis wrapping film machine. The machine has two sets of opposing clamping plates 2. The clamping plates 2 can move laterally via clamping cylinders 54 on the clamping execution assembly 5, thus separating the wrapping core roller 8 from the clamping plates 2. The clamping plates 2 can be rotated and repositioned based on the first motor 4. The specific working method is as follows: By activating the clamping cylinder 66 on the winding assembly 6, the clamping head 61 clamps the two ends of the film core roller 8 respectively. Then, the piston rod of the clamping cylinder 54 on the clamping execution assembly 5 retracts, causing the clamping plate 2 to move towards the frame plate 1, thereby causing the film core roller 8 at the upper end of the clamping plate 2 to disengage from the clamping plate 2. Activating the second motor 67 allows the film core roller 8 at the upper end of the clamping plate 2 to rotate and wrap the cast film. The upper end of the clamping plate 2 is the winding station. When the piston rod of the clamping cylinder 54 retracts, it can simultaneously drive the film core roller 8 at the lower end of the clamping plate 2 to disengage from its clamping hole 21, so that the film core roller 8 can be replaced. The lower end of the clamping plate 2 is the roller changing station. Because of the limiting plates 23 and the limiting wheels 53, the film core rollers 8 at the front and rear ends of the clamping plate 2 can be supported by the clamping plate 23, and the film core rollers 8 will not detach from the clamping plate 2; the front and rear ends of the clamping plate 2 are buffer stations. When a change of position between workstations is required, the clamping cylinder 54 is activated to insert both ends of the film core roller 8 into the clamping holes 21 of the clamping plate 2, such as... Figure 3 As shown, the clamping plate 2 also moves out of the positioning plates 7, and then the first motor 4 is started to rotate the clamping plate 2. The clamping plate 2 rotates 90 degrees, which can realize the replacement of the position of the film core roller 8. Then, when the clamping plate 2 moves and is inserted between the positioning plates 7, the film core roller 8 can be wound or replaced.

[0021] The embodiments described are illustrative of the invention and are not intended to limit the invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the invention; therefore, the scope of protection of the invention should be as set forth in the claims.

Claims

1. A fully automatic four-axis roll-changing stretch film machine, comprising two opposing frame plates (1), with two sets of left-right opposing clamping plates (2) arranged in a cross shape between the frame plates (1), characterized in that: The four ends of the clamping plate (2) are respectively formed with clamping holes (21). The inner wall of the clamping hole (21) near the frame plate (1) is formed with a limit ring (22). The two clamping plates (2) are respectively formed with four sets of semi-circular support plates (23) on their opposite end faces. The support plates (23) are distributed between the clamping holes (21) of the clamping plate (2). The inner wall of the support plate (23) and the inner wall of the clamping hole (21) are in the same cylindrical surface. A transverse spline shaft (3) is inserted in the middle of the two clamping plates (2). One end of the spline shaft (3) extends out of the clamping plate (2) and is fixed to the shaft of the first motor (4) through a coupling. The first motor (4) is fixed on the outer wall of the frame plate (1). The other end of the spline shaft (3) extends out of the clamping plate (2) and is fitted with a spline sleeve (9). The spline sleeve (9) is pivotally connected to the frame plate (1). A clamping execution assembly (5) and a winding assembly (6) are provided between the clamping plate (2) and the frame plate (1). The clamping execution assembly (5) includes a longitudinally rectangular push plate (51). A bushing is formed in the middle of the clamping plate (2). The bushing is connected to the middle of the push plate (51) by a bearing. Transverse guide posts (52) are provided at the front and rear ends of the push plate (51). One end of the guide post (52) is inserted into the frame plate (1), and the other end is formed with a support shaft (521). The support shaft (521) is inserted and fixed on the push plate (51) and extends out of the push plate (51) and is connected to the limit wheel (53) through the bearing. The limit wheel (53) is distributed on the front and rear sides of the clamping hole (21) on the front and rear sides of the clamping plate (2). A transverse clamping cylinder (54) is fixed on the frame plate (1) between the spline shaft (3) and the guide column (52). The piston rod of the clamping cylinder (54) passes through the frame plate (1) and is fixed on the push plate (51). The winding assembly (6) includes a clamping head (61) that is conical and opposite to the clamping hole (21) at the upper end of the clamping plate (2). A transverse and T-shaped prism (63) is inserted and fixed on the clamping head (61). The prism (63) is inserted into a circular rotating disk (62). A spring (64) is sleeved on the prism (63) between the rotating disk (62) and the clamping head (61). The two ends of the spring (64) are pressed against the clamping head (61) and the rotating disk (62) respectively. A rotating sleeve (621) is formed on the end face of the rotating disk (62) near the frame plate (1). A rotating sleeve (621) extends out of the frame plate (1) and is pivotally connected to a side-standing clamping plate (65). A transverse limiting shaft (69) is inserted into the clamping plate (65), and the limiting shaft (69) is fixed on the frame plate (1). A transverse clamping cylinder (66) is fixed on the upper part of the clamping plate (65), and the piston rod of the clamping cylinder (66) is fixed on the frame plate (1). A second motor (67) is provided on the winding assembly (6) on one side of the clamping plate (2). The second motor (67) is fixed on the clamping plate (65), and the rotating shaft of the second motor (67) is fixedly connected to the rotating sleeve (621). The clamping plate (2) has four sets of transverse film-winding core rollers (8) inserted between its ends. The two ends of the film-winding core rollers (8) are respectively inserted into the clamping holes (21) of the clamping plate (2). The two end faces of the film-winding core rollers (8) are respectively formed with conical holes (81) opposite to the clamping head (61).

2. The fully automatic four-axis roll-changing wrapping film machine according to claim 1, characterized in that: The prism (63) on the winding assembly (6) is a hexagonal prism. The head of the prism (63) is inserted into the rotating sleeve (621) of the rotating disk (62). The central axis of the rotating sleeve (621), the central axis of the hexagonal prism and the central axis of the clamping hole (21) at the upper end of the clamping plate (2) coincide. The diameter of the inner wall of the limiting ring (22) in the clamping hole (21) is not less than the maximum diameter of the outer wall of the clamping head (61).

3. The fully automatic four-axis roll-changing wrapping film machine according to claim 2, characterized in that: The rotating sleeve (621) is connected to the clamping plate (65) by bearings. A limiting sleeve (68) is inserted and fixed on the rotating sleeve (621) between the clamping plate (65) and the frame plate (1). The limiting sleeve (68) abuts against the side wall of the clamping plate (65). The second motor (67) on one side of the clamping plate (2) abuts against the side end face of the rotating sleeve (621). The shaft of the second motor (67) is inserted into the rotating sleeve (621) and connected to the rotating sleeve (621) by a flat key. A T-shaped end cap (610) is inserted and fixed at the end of the rotating sleeve (621) on the other side of the clamping plate (2). The end cap (610) abuts against the side wall of the clamping plate (65).

4. The fully automatic four-axis roll-changing wrapping film machine according to claim 3, characterized in that: A sliding bearing (611) is fixed on the frame plate (1), and a rotating sleeve (621) is inserted into the sliding bearing (611).

5. The fully automatic four-axis roll-changing wrapping film machine according to claim 1, characterized in that: The diameter of the outer wall of the winding core roller (8) is equal to the diameter of the clamping hole (21) on the clamping plate (2), and the stroke of the clamping cylinder (54) on the clamping execution assembly (5) is not less than the thickness of the clamping plate (2) and not greater than the sum of the thickness of the clamping plate (2) and the length of the support plate (23).

6. The fully automatic four-axis roll-changing wrapping film machine according to claim 5, characterized in that: The difference between the center distance from the guide post (52) on the clamping execution assembly (5) to the adjacent clamping hole (21) and the outer radius of the limiting stop wheel (53) is equal to the radius of the outer wall of the core roller (8).

7. The fully automatic four-axis roll-changing wrapping film machine according to claim 1, characterized in that: The lower end face of the push plate (51) abuts against two horizontal positioning plates (7), which are distributed on the front and rear sides of the lower part of the clamping plate (2) and fixed on the frame plate (1).

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