A vacuum bag making and slitting mechanism

Abstract

The utility model relates to vacuum bag slitting technical field, specifically disclose a kind of vacuum bag making bag slitting mechanism, including rack, the reel-off device, longitudinal cutting device, traction conveying device and cross cutting device are sequentially arranged on the rack along film conveying direction;The longitudinal cutting device includes main shaft, multiple disc cutters slidingly sleeved on the main shaft and the cutter distance adjusting assembly for adjusting and locking the axial position of the disc cutter;The cross cutting device includes support seat, gantry is installed on the support seat, mounting bracket is set in the gantry by electric telescopic rod and can be lifted, and cross cutting roller is set on the mounting bracket;By accurately adjusting longitudinal cutting width, ensure cross cutting accuracy and stability, both improve vacuum bag slitting precision and product quality, reduce scrap rate, also enhance the adaptability of equipment to different specifications vacuum bag production, also realize continuous automatic production to improve efficiency, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of vacuum bag cutting technology, and specifically discloses a vacuum bag making and cutting mechanism. Background Technology

[0002] In the production of vacuum bags, rolled film material needs to be processed into vacuum bags of specific sizes. Traditional vacuum bag making and slitting equipment has many problems. For example, in the longitudinal cutting stage, the spacing of the disc cutters is often difficult to adjust precisely, making it impossible to quickly adapt to the production needs of vacuum bags of different widths, resulting in low production efficiency and low cutting accuracy, affecting product quality. In the transverse cutting stage, the lack of a buffer mechanism during the descent of the cutting device easily impacts the film, resulting in uneven cuts or even damage to the film. At the same time, if the guiding mechanism is not designed properly, the cutting device may deviate during the lifting and lowering process, further affecting the accuracy and stability of the transverse cutting. In addition, if the unwinding device and traction conveyor are not well coordinated during the entire film conveying process, it will lead to unstable film tension and wrinkles, which is also detrimental to subsequent slitting and bag making processes. Utility Model Content

[0003] This invention proposes a vacuum bag making and slitting mechanism. Through the coordinated operation of an adjustable longitudinal slitting device and a buffered transverse slitting device, the adjustment efficiency and accuracy of vacuum bag slitting size are significantly improved. At the same time, the impact and noise of the equipment are effectively reduced, the service life of the cutter is extended, and the stability of the slitting process and product quality are guaranteed.

[0004] This utility model is implemented as follows: a vacuum bag making and slitting mechanism includes a frame, on which an unwinding device, a longitudinal cutting device, a traction conveying device and a transverse cutting device are sequentially arranged along the film conveying direction; The longitudinal cutting device includes a main shaft, a plurality of disc cutters slidably sleeved on the main shaft, and a blade spacing adjustment assembly for adjusting and locking the axial position of the disc cutters; The cross-cutting device includes a support base, a gantry frame mounted on the support base, a mounting frame that is vertically and flexibly installed inside the gantry frame via an electric telescopic rod, and a cross-cutting roller mounted on the mounting frame. The outer peripheral wall of the cross-cutting roller is provided with a cross-cutting blade. A buffer mechanism is provided between the power output end of the electric telescopic rod and the mounting frame, and a guide mechanism is provided between the mounting frame and the gantry frame.

[0005] As a preferred embodiment of the vacuum bag making and cutting mechanism of this utility model, the blade distance adjustment assembly includes at least two adjusting screws parallel to the main shaft, the disc cutter has through holes for the adjusting screws to pass through, and locking nuts are screwed onto both sides of each disc cutter on the adjusting screws.

[0006] As a preferred embodiment of the vacuum bag making and cutting mechanism of this utility model, the two ends of the main shaft are fixed with a rotating disk with a shaft on the other side, the other end of the shaft is rotatably connected to the frame through a bearing seat, and the frame is provided with a drive motor coaxially fixed to one of the shafts, and the two ends of the adjusting screw are fixed to the rotating disk.

[0007] As a preferred embodiment of the vacuum bag making and cutting mechanism of this utility model, the buffer mechanism includes an upper connecting plate fixedly connected to the piston rod end of the electric telescopic rod, a lower connecting plate fixedly connected to the mounting frame, and a plurality of elastic buffer members evenly distributed between the upper connecting plate and the lower connecting plate, wherein the elastic buffer members are spring dampers.

[0008] As a preferred embodiment of the vacuum bag making and cutting mechanism of this utility model, the guiding mechanism includes a guide rod vertically fixed on the mounting frame, and the top of the gantry frame is provided with a linear bearing that cooperates with the guide rod.

[0009] As a preferred embodiment of the vacuum bag making and slitting mechanism of this utility model, a tensioning guide roller group is provided between the unwinding device and the longitudinal cutting device; the traction conveying device includes a pair of active rubber rollers arranged opposite each other.

[0010] The beneficial effects of this utility model are: The blade spacing adjustment component allows for precise adjustment of the longitudinal cutting width, while the guiding mechanism ensures accuracy during the transverse cutting process, resulting in more precise vacuum bag slitting dimensions and improved product quality. The buffer mechanism reduces the impact on the film during transverse cutting, making the cut smoother, reducing the scrap rate, and improving the overall product quality. The adjustable blade spacing adjustment component enables the equipment to quickly adapt to the production needs of vacuum bags of different widths, improving the equipment's versatility and production flexibility. The coordinated operation of all components achieves continuous automated production from film unwinding to slitting, reducing manual intervention, improving production efficiency, and lowering production costs. Attached Figure Description

[0011] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the cross-cutting device of this utility model.

[0014] Figure 3This is a schematic diagram of the structure of the disc cutter and through hole of this utility model.

[0015] Figure 4 This is a schematic diagram of the structure of the active rubber roller of this utility model.

[0016] The markings in the diagram are: 1. Frame; 2. Unwinding device; 3. Sliding device; 4. Traction conveying device; 5. Cross-cutting device; 6. Main shaft; 7. Disc cutter; 8. Support base; 9. Gantry frame; 10. Electric telescopic rod; 11. Mounting frame; 12. Cross-cutting roller; 13. Cross-cutting blade; 14. Adjusting screw; 15. Through hole; 16. Locking nut; 17. Shaft; 18. Rotary disk; 19. Drive motor; 20. Upper connecting plate; 21. Lower connecting plate; 22. Elastic buffer; 23. Guide rod; 24. Linear bearing; 25. Tensioning guide roller group; 26. Active rubber roller. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0018] Please see Figure 1-4 A vacuum bag making and slitting mechanism includes a frame 1, on which an unwinding device 2, a longitudinal slitting device 3, a traction conveying device 4 and a transverse slitting device 5 are arranged sequentially along the film conveying direction; The longitudinal cutting device 3 includes a main shaft 6, a plurality of disc cutters 7 slidably sleeved on the main shaft 6, and a blade spacing adjustment assembly for adjusting and locking the axial position of the disc cutters 7; The cross-cutting device 5 includes a support base 8, a gantry frame 9 mounted on the support base 8, a mounting frame 11 that is vertically and flexibly installed in the gantry frame 9 via an electric telescopic rod 10, and a cross-cutting roller 12 mounted on the mounting frame 11. The outer peripheral wall of the cross-cutting roller 12 is provided with a cross-cutting blade 13. A buffer mechanism is provided between the power output end of the electric telescopic rod 10 and the mounting frame 11, and a guide mechanism is provided between the mounting frame 11 and the gantry frame 9.

[0019] In this embodiment: the unwinding device 2 releases the rolled film, and the tensioning guide roller group 25 tensions and guides the film, enabling the film to enter the longitudinal cutting device 3 stably and accurately; the longitudinal cutting device 3 drives the disc cutter 7 to rotate through the main shaft 6 to cut the film longitudinally. The operator can adjust the spacing of the disc cutter 7 as needed through the blade spacing adjustment component to obtain strips of film of different widths; the cut strips of film are held by the active rubber roller 26 of the traction conveying device 4 and conveyed forward to the cross-cutting device 5; the electric telescopic rod 10 of the cross-cutting device 5 drives the mounting frame 11 and the cross-cutting roller 12 to descend, and the cross-cutting blade 13 on the cross-cutting roller 12 cuts the film laterally. During the descent, the buffer mechanism plays a buffering role to reduce the impact on the film, and the guiding mechanism ensures the accuracy of the lifting and lowering of the cross-cutting roller 12, thereby cutting the strips of film into vacuum bag semi-finished products of a certain length.

[0020] As a technical optimization of this utility model, the blade distance adjustment assembly includes at least two adjusting screws 14 parallel to the main shaft 6, and a through hole 15 is provided on the disc cutter 7 for the adjusting screws 14 to pass through. Locking nuts 16 are screwed onto both sides of each disc cutter 7 on the adjusting screws 14.

[0021] In this embodiment: by adjusting the screw 14 through the through hole 15 on the disc cutter 7 and using the locking nuts 16 on both sides of the adjusting screw 14 to adjust and fix the position of the disc cutter 7, the operator can conveniently and quickly adjust the spacing of the disc cutter 7 to adapt to the production needs of vacuum bags of different widths; this improves the versatility and production efficiency of the equipment and reduces the time and cost consumption caused by replacing disc cutters 7 of different specifications.

[0022] As a technical optimization of this utility model, the two ends of the main shaft 6 are fixed with a rotating disk 18 with a shaft 17 on the other side. The other end of the shaft 17 is rotatably connected to the frame 1 through a bearing seat. The frame 1 is provided with a drive motor 19 coaxially fixed to one of the shafts 17. The two ends of the adjusting screw 14 are fixed to the rotating disk 18.

[0023] In this embodiment: the two ends of the main shaft 6 are rotatably connected to the frame 1 through the rotating disk 18 and the shaft 17, one of the shafts 17 being driven by the drive motor 19; at the same time, the adjusting screw 14 is fixedly connected to the rotating disk 18, making the structure of the entire longitudinal cutting device 3 more stable when adjusting the spacing of the disc cutter 7; ensuring that the main shaft 6 can rotate stably, providing a reliable power source for the disc cutter 7, while ensuring the coordination and stability of each component during the blade spacing adjustment process; improving the stability and reliability of the longitudinal cutting operation, thereby improving the cutting accuracy and product quality.

[0024] As a technical optimization of this utility model, the buffer mechanism includes an upper connecting plate 20 fixedly connected to the piston rod end of the electric telescopic rod 10, a lower connecting plate 21 fixedly connected to the mounting bracket 11, and a plurality of elastic buffer members 22 evenly distributed between the upper connecting plate 20 and the lower connecting plate 21. The elastic buffer members 22 are spring dampers.

[0025] In this embodiment, the cooperation of the upper connecting plate 20, the lower connecting plate 21 and multiple elastic buffers 22 (spring dampers) plays a buffering role when the cross-cutting roller 12 descends to cut the film; effectively reducing the impact force on the film during the cross-cutting process and preventing the film from being damaged by the impact; improving the flatness of the cross-cutting cut, reducing the scrap rate, and improving product quality and production efficiency.

[0026] As a technical optimization of this utility model, the guiding mechanism includes a guide rod 23 vertically fixed on the mounting frame 11, and a linear bearing 24 that cooperates with the guide rod 23 is provided on the top of the gantry frame 9.

[0027] In this embodiment, the guide rod 23, in cooperation with the linear bearing 24, provides precise guidance for the lifting and lowering of the mounting frame 11; ensuring the positional accuracy of the cross-cutting roller 12 during the lifting and lowering process and preventing its deviation, thereby ensuring the accuracy of cross-cutting. The effect is to improve the quality and stability of cross-cutting and reduce product defects caused by cross-cutting deviations.

[0028] As a technical optimization of this utility model, a tensioning guide roller group 25 is provided between the unwinding device 2 and the slitting device 3; the traction conveying device 4 includes a pair of active rubber rollers 26 arranged opposite each other.

[0029] In this embodiment: the tension guide roller group 25 is used to adjust the film tension and guide the film, and the active rubber roller 26 is used to pull and transport the film; to ensure the stability and tension uniformity of the film during the transport process, to provide good conditions for the subsequent slitting process, and to improve the slitting quality and production efficiency.

[0030] Working principle and usage process of this utility model: The rolled film is mounted on the unwinding device 2. The spacing of the disc cutters 7 in the slitting device 3 is adjusted according to the required width of the vacuum bag using the blade spacing adjustment assembly. The unwinding device 2 is started, and the film begins to be released, passing through the tension guide roller group 25 and entering the slitting device 3. The drive motor 19 of the slitting device 3 drives the main shaft 6 and the disc cutters 7 to rotate, longitudinally cutting the film and separating the wide film into multiple long strips that meet the width requirements. The longitudinally cut long strips of film are clamped by the active rubber roller 26 of the traction conveying device 4. The rubber roller 26 rotates, driving the film forward at a stable speed. When the long strip of film is conveyed to the bottom of the cross-cutting device 5, the electric telescopic rod 10 is activated, driving the mounting frame 11 and the cross-cutting roller 12 to descend. The cross-cutting blade 13 cuts the film horizontally. During the descent of the cross-cutting roller 12, the buffer mechanism plays a buffering role, and the guide mechanism ensures that the cross-cutting roller 12 descends vertically. After the cutting is completed, the electric telescopic rod 10 drives the cross-cutting roller 12 to rise and reset, completing one cross-cutting operation. This cycle is repeated to cut the long strip of film into individual vacuum bag semi-finished products.

[0031] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A vacuum bag making and cutting mechanism, comprising a frame (1), characterized in that: The frame (1) is provided with an unwinding device (2), a longitudinal cutting device (3), a traction conveying device (4) and a transverse cutting device (5) in sequence along the film conveying direction. The longitudinal cutting device (3) includes a main shaft (6), a plurality of disc cutters (7) slidably sleeved on the main shaft (6), and a blade spacing adjustment assembly for adjusting and locking the axial position of the disc cutters (7); The cross-cutting device (5) includes a support base (8), a gantry frame (9) mounted on the support base (8), a mounting frame (11) that is vertically and flexibly installed in the gantry frame (9) via an electric telescopic rod (10), and a cross-cutting roller (12) mounted on the mounting frame (11). The outer peripheral wall of the cross-cutting roller (12) is provided with a cross-cutting blade (13). A buffer mechanism is provided between the power output end of the electric telescopic rod (10) and the mounting frame (11), and a guide mechanism is provided between the mounting frame (11) and the gantry frame (9).

2. The vacuum bag making and cutting mechanism according to claim 1, characterized in that: The blade spacing adjustment assembly includes at least two adjusting screws (14) parallel to the main shaft (6). The disc cutter (7) has through holes (15) through which the adjusting screws (14) pass. Locking nuts (16) are screwed onto both sides of each disc cutter (7) on the adjusting screws (14).

3. The vacuum bag making and cutting mechanism according to claim 2, characterized in that: The main shaft (6) has a rotating disk (18) with a shaft (17) on the other side fixed at both ends. The other end of the shaft (17) is rotatably connected to the frame (1) through a bearing seat. The frame (1) is provided with a drive motor (19) coaxially fixed to one of the shafts (17). The two ends of the adjusting screw (14) are fixed to the rotating disk (18).

4. The vacuum bag making and cutting mechanism according to claim 1, characterized in that: The buffer mechanism includes an upper connecting plate (20) fixedly connected to the piston rod end of the electric telescopic rod (10), a lower connecting plate (21) fixedly connected to the mounting bracket (11), and a plurality of elastic buffers (22) evenly distributed between the upper connecting plate (20) and the lower connecting plate (21), wherein the elastic buffers (22) are spring dampers.

5. The vacuum bag making and cutting mechanism according to claim 1, characterized in that: The guiding mechanism includes a guide rod (23) vertically fixed on the mounting frame (11), and the top of the gantry frame (9) is provided with a linear bearing (24) that cooperates with the guide rod (23).

6. The vacuum bag making and cutting mechanism according to claim 1, characterized in that: A tensioning guide roller group (25) is provided between the unwinding device (2) and the slitting device (3); the traction conveying device (4) includes a pair of active rubber rollers (26) arranged opposite each other.

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