Film pulling structure of a film covering machine

Abstract

The utility model relates to a film covering machine technical field, concretely is a kind of film covering machine's film drawing structure.Two X-axis guide rails are parallelly arranged, two Y-axis guide rails are slidably connected to the upper end of the two X-axis guide rails, two sliding blocks one are slidably connected to the upper end of the two Y-axis guide rails respectively, the sliding block one moves along Y-axis guide rail, one film drawing gripper is arranged on each of the four sliding blocks one, driving electric cylinder is arranged below X-axis guide rail and Y-axis guide rail respectively, the driving shaft of driving electric cylinder is connected with movable cross brace, two connecting shafts one are separately arranged on the outside of X-axis guide rail and Y-axis guide rail with interval, two connecting shafts two are separately arranged on the outside of movable cross brace with interval, connecting shaft three is arranged on the outside of the front end and rear end of Y-axis guide rail and sliding block one respectively, X-axis rocker arm is connected to the outside of X-axis guide rail through connecting shaft one, Y-axis rocker arm is connected to the outside of Y-axis guide rail through connecting shaft one.Compared with prior art, the utility model reduces manufacturing and maintenance cost, and is accurate, stable and uniform in film stretching.

Description

Technical Field

[0001] This utility model relates to the field of film-coating machine technology, specifically to a film-stretching structure for a film-coating machine. Background Technology

[0002] A film-wrapping machine is a large-scale palletized goods packaging equipment widely used in industries such as chemicals, building materials, and food. It forms protective packaging by wrapping a pre-stretched film over the entire goods. Commonly used film-stretching machines have a relatively bulky film-pulling structure, using multiple motors, chains, and rollers for mechanical transmission. Motors are expensive, and chains and rollers are unstable, prone to damage and detachment, requiring frequent maintenance. They also have problems such as high manufacturing costs and large space requirements. Utility Model Content

[0003] To address the problems mentioned in the background art, this utility model provides a film-pulling structure for a film-coating machine, including two X-axis guide rails and two Y-axis guide rails. The two X-axis guide rails are arranged in parallel, and two Y-axis guide rails are slidably connected to the upper ends of the two X-axis guide rails. The extension direction of the Y-axis guide rails is perpendicular to the X-axis guide rails. Two sliders are slidably connected to each of the two Y-axis guide rails, and the sliders move along the Y-axis guide rails. Each of the four sliders is equipped with a film-pulling gripper. Drive cylinders are respectively provided below the X-axis and Y-axis guide rails. The drive shafts of the drive cylinders are connected to a moving cross brace. Two connecting shafts are spaced apart on the outer sides of the X-axis and Y-axis guide rails, and two connecting shafts are spaced apart on the outer sides of the moving cross brace. The X-axis guide rail has connecting shaft three at both ends and on the outside of slider one. The X-axis rocker arm is connected to the outside of the X-axis guide rail via connecting shaft one. The Y-axis rocker arm is connected to the outside of the Y-axis guide rail via connecting shaft one. The X-axis rocker arm includes an upper arm and a lower arm. The lower arm has a connecting groove one, and the upper arm has a connecting groove two. The Y-axis rocker arm has the same structure as the X-axis rocker arm. The upper arm of the X-axis rocker arm is slidably connected to the connecting shaft three of the Y-axis guide rail via connecting groove two. The lower arm of the X-axis rocker arm is slidably connected to the connecting shaft two of the movable cross brace via connecting groove one. The upper arm of the Y-axis rocker arm is slidably connected to the connecting shaft three on slider one via connecting groove two. The lower arm of the Y-axis rocker arm is slidably connected to the connecting shaft two of the movable cross brace via connecting groove one.

[0004] The membrane-stretching gripper includes a base plate, a membrane-stretching bow-shaped component, a slide rail, a second slider, an electric cylinder, a connecting plate, a pressing motor, and a pressing roller. The base plate is mounted on the first slider, and the front end of the base plate is equipped with the membrane-stretching bow-shaped component. The base plate is equipped with a slide rail, and the second slider is slidably connected to the slide rail. The slide rail and the second slider cooperate with each other. The second slider is equipped with a connecting plate, and the connecting plate is equipped with an electric cylinder and a pressing motor. The output end of the pressing motor is connected to the pressing roller.

[0005] The electric cylinder drive end is connected to the connecting plate, and the connecting plate moves along the slide rail via the second slider.

[0006] The upper and lower arms of the rocker arm are connected at an acute angle.

[0007] Both connecting groove one and connecting groove two are elongated holes, and connecting shaft two can slide in connecting groove one, and connecting shaft three can slide in connecting groove two.

[0008] Compared with the prior art, this invention simplifies the mechanical structure and electrical control system, reduces manufacturing and maintenance costs, provides precise control and high stability, and ensures the uniformity of film stretching. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 Side view of this utility model Figure 1 ; Figure 3 Side view of this utility model Figure 2 ; Figure 4 This is a schematic diagram of the rocker arm structure; Figure 5 This is a schematic diagram of the structure of the membrane tensioning gripper; See Figure 1 1. X-axis guide rail, 2. Y-axis guide rail, 3. Film pulling gripper, 4. Slider 1, 5. Drive cylinder, 6. Moving cross brace, 7. Connecting shaft 1, 8. Connecting shaft 2, 9. Connecting shaft 3, 10. X-axis rocker arm, 11. Upper support arm, 12. Lower support arm, 13. Connecting groove 1, 14. Connecting groove 2, 15. Base plate, 16. Film pulling bow-shaped component, 17. Slide rail, 18. Slider 2, 19. Cylinder, 20. Connecting plate, 21. Pressing motor, 22. Pressing roller, 23. Y-axis rocker arm. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] like Figures 1 to 3A film-pulling structure for a film-coating machine includes two X-axis guide rails 1 and two Y-axis guide rails 2. The two X-axis guide rails 1 are arranged in parallel, and the upper ends of the two X-axis guide rails 1 are slidably connected to two Y-axis guide rails 2. The extension direction of the Y-axis guide rails 2 is perpendicular to the X-axis guide rails 1. Two sliders 4 are slidably connected to each of the two Y-axis guide rails 2. The sliders 4 move along the Y-axis guide rails 2. Each of the four sliders 4 is provided with a film-pulling gripper 3. Drive cylinders 5 are respectively provided below the X-axis guide rails 1 and Y-axis guide rails 2. The drive shaft of the drive cylinders 5 is connected to a moving cross brace 6. Two connecting shafts 7 are spaced apart on the outer sides of the X-axis guide rails 1 and Y-axis guide rails 2, and two connecting shafts 8 are spaced apart on the outer sides of the moving cross brace 6. Connecting shafts 9 are provided at the front and rear ends of the Y-axis guide rails 2 and on the outer sides of the sliders 4. The outer side of the X-axis guide rails 1 is connected to the film-pulling structure. The X-axis rocker arm 10 is connected to the connecting shaft 7. The Y-axis rocker arm 23 is connected to the outside of the Y-axis guide rail 2 via the connecting shaft 7. The X-axis rocker arm 10 includes an upper support arm 11 and a lower support arm 12. The lower support arm 12 is provided with a connecting groove 13, and the upper support arm 11 is provided with a connecting groove 24. The Y-axis rocker arm 23 has the same structure as the X-axis rocker arm 10. The upper support arm 11 of the X-axis rocker arm 10 is slidably connected to the connecting shaft 39 of the Y-axis guide rail 2 via the connecting groove 24. The lower support arm 12 of the X-axis rocker arm 10 is slidably connected to the connecting shaft 28 of the movable cross brace 6 via the connecting groove 13. The upper support arm 11 of the Y-axis rocker arm 23 is slidably connected to the connecting shaft 39 on the slider 4 via the connecting groove 214. The lower support arm 12 of the Y-axis rocker arm 23 is slidably connected to the connecting shaft 28 of the movable cross brace 6 via the connecting groove 13.

[0012] like Figure 5 The membrane tensioning gripper 3 includes a base plate 15, a membrane tensioning bow-shaped component 16, a slide rail 17, a second slider 18, an electric cylinder 19, a connecting plate 20, a pressing motor 21, and a pressing roller 22. The base plate 15 is mounted on the first slider 4. The front end of the base plate 15 is provided with the membrane tensioning bow-shaped component 16. The base plate 15 is provided with the slide rail 17, and the second slider 18 is slidably connected to the slide rail 17. The slide rail 17 and the second slider 18 cooperate with each other. The second slider 18 is provided with the connecting plate 20, and the connecting plate 20 is provided with the electric cylinder 19 and the pressing motor 21. The output end of the pressing motor 21 is connected to the pressing roller 22.

[0013] The drive end of the electric cylinder 19 is connected to the connecting plate 20, and the connecting plate 20 moves along the slide rail 17 via the slider 2 18.

[0014] The upper support arm 11 and the lower support arm 12 of the rocker arm 10 are connected at an acute angle.

[0015] Both connecting groove 13 and connecting groove 2 are elongated holes. Connecting shaft 2 8 can slide in connecting groove 13, and connecting shaft 3 9 can slide in connecting groove 2 14.

[0016] In operation, the drive cylinder 5 drives the moving cross brace 6 to move upward. The moving cross brace 6 drives the connecting shafts 8 at both ends of it to move upward together. The connecting shafts 8 slide in the connecting groove 13, pushing the X-axis rocker arm 10 to rotate outward around it and the connecting shaft 7. The upper support arm 11 of the X-axis rocker arm 10 moves accordingly, pushing the connecting shafts 9 at both ends of the Y-axis guide rail 2 through the connecting groove 14, causing the two Y-axis guide rails 2 to move in the X-axis direction. At the same time, the Y-axis rocker arm 23 moves the four sliders 4 in the Y-axis direction through the same principle. The four film-pulling grippers 3 synchronously retract towards the center, grabbing the film, and then moving in the opposite direction to put the stretched film onto the goods. Finally, the film-pulling grippers 3 return to their original positions, waiting for the next work cycle.

Claims

1. A film pulling structure of a film covering machine, comprising two X-axis guide rails (1) and two Y-axis guide rails (2), characterized in that: The two X-axis guide rails (1) are arranged in parallel. The upper ends of the two X-axis guide rails (1) are slidably connected to two Y-axis guide rails (2). The derivative direction of the Y-axis guide rails (2) is perpendicular to the X-axis guide rails (1). Two sliders (4) are slidably connected to each of the two Y-axis guide rails (2). The sliders (4) move along the Y-axis guide rails (2). Each of the four sliders (4) is provided with a film pulling gripper (3). A drive cylinder (5) is provided below the X-axis guide rails (1) and the Y-axis guide rails (2). The drive shaft of the drive cylinder (5) is connected to the moving cross brace (6). Two connecting shafts (7) are spaced apart on the outer sides of the X-axis guide rails (1) and the Y-axis guide rails (2). Two connecting shafts (8) are spaced apart on the outer sides of the moving cross brace (6). Connecting shafts (9) are provided at the front and rear ends of the Y-axis guide rails (2) and on the outer sides of the sliders (4). The outer sides of the X-axis guide rails (1) are connected to the X-axis rocker arm (10) through the connecting shafts (7). The outer side of the axis guide rail (2) is connected to the Y-axis rocker arm (23) via connecting shaft one (7). The X-axis rocker arm (10) includes an upper support arm (11) and a lower support arm (12). The lower support arm (12) is provided with a connecting groove one (13), and the upper support arm (11) is provided with a connecting groove two (14). The Y-axis rocker arm (23) and the X-axis rocker arm (10) have the same structure. The upper support arm (11) of the X-axis rocker arm (10) is connected to the Y-axis guide rail (2) via the connecting groove two (14). The lower support arm (12) of the X-axis rocker arm (10) is slidably connected to the connecting shaft 2 (8) of the movable cross brace (6) via the connecting groove 1 (13). The upper support arm (11) of the Y-axis rocker arm (23) is slidably connected to the connecting shaft 3 (9) on the slider 1 (4) via the connecting groove 2 (14). The lower support arm (12) of the Y-axis rocker arm (23) is slidably connected to the connecting shaft 2 (8) of the movable cross brace (6) via the connecting groove 1 (13).

2. The film pulling structure of the film covering machine according to claim 1, wherein: The membrane gripper (3) includes a base plate (15), a membrane arch-shaped component (16), a slide rail (17), a second slider (18), an electric cylinder (19), a connecting plate (20), a pressing motor (21), and a pressing roller (22). The base plate (15) is mounted on the first slider (4). The front end of the base plate (15) is provided with the membrane arch-shaped component (16). The base plate (15) is provided with a slide rail (17). The second slider (18) is slidably connected to the slide rail (17). The slide rail (17) and the second slider (18) cooperate with each other. The second slider (18) is provided with a connecting plate (20). The connecting plate (20) is provided with an electric cylinder (19) and a pressing motor (21). The output end of the pressing motor (21) is connected to the pressing roller (22).

3. The film pulling structure of the film covering machine according to claim 1, wherein: The drive end of the electric cylinder (19) is connected to the connecting plate (20), and the connecting plate (20) moves along the slide rail (17) via the slider two (18).

4. The film pulling structure of the film covering machine according to claim 1, wherein: The upper arm (11) and lower arm (12) of the rocker arm (10) are connected at an acute angle.

5. The film pulling structure of the film covering machine according to claim 1, wherein: Both the first connecting groove (13) and the second connecting groove (14) are elongated holes. The second connecting shaft (8) can slide in the first connecting groove (13), and the third connecting shaft (9) can slide in the second connecting groove (14).

Images