Cutting mechanism of vertical film rolling bag-making packaging machine

Abstract

The utility model relates to the technical field of packaging machinery, and discloses a vertical roll film bag-making packaging machine cutting mechanism which comprises a cutting knife rest, two sliding rods are fixedly connected to the short inner walls of the two sides of the cutting knife rest, and a first movable plate, a second movable plate and a third movable plate are slidably connected to the outer walls of the two sliding rods; two buffer springs are installed between the second movable plate and the third movable plate, and the two buffer springs are connected to the outer walls of the sliding rods in a sleeved mode. When the first movable plate and the second movable plate move close to each other, the packaging bag is cut through the tool apron, the blade and the packaging bag, when the tool apron makes contact with the blade, under the elastic action of the two buffer springs, overlarge thrust of the air cylinder is buffered, and the situation that the blade is damaged due to direct rigid contact between the tool apron and the blade is prevented.

Description

Technical Field

[0001] This application relates to the technical field of packaging machinery, and in particular to a cutting mechanism for a vertical roll film bag-making packaging machine. Background Art

[0002] With the rapid development of modern packaging technology, vertical roll film bag-making packaging machines, as efficient and automated packaging equipment, have been widely used in multiple industries such as food, medicine, and chemicals. As one of the core components of the packaging machine, its cutting mechanism not only determines the forming quality of the packaging bags but also directly affects the efficiency and stability of the entire production line;

[0003] In "CN218751788U", "a cutting mechanism for a vertical packaging machine after sealing is disclosed, including a mounting frame, a hydraulic cylinder, and a moving frame. Hydraulic cylinders are fixedly installed on both sides of the mounting frame... A heat sealing strip is fixedly installed on one side of the heating plate." This utility model sets a cutting mechanism, and through a screw and a slider, the cutting blade can be adjusted up and down in height, so as to change the distance from the heat sealing strip, improve flexibility, and the adjustment method is simple and convenient, facilitating the cutting of packaging bags of different heights and improving the applicability of the cutting mechanism;

[0004] Regarding the above-related technology, the inventor believes that during cutting, two cutting blades are driven by two hydraulic cylinders to move relative to each other to cut the packaging bag. Due to the lack of a buffer mechanism, when the driving force of the hydraulic cylinder is too large and combined with long-term cutting, the two cutting blades are prone to collide and be damaged. Therefore, a cutting mechanism for a vertical roll film bag-making packaging machine is proposed to solve the above problems.

[0005] The above information disclosed in this background art is only used to increase the understanding of the background art of this application. Therefore, it may include prior art that is not known to ordinary technicians in this field. Summary of the Utility Model

[0006] In order to solve the problem that during cutting, two cutting blades are driven by two hydraulic cylinders to move relative to each other to cut the packaging bag. Due to the lack of a buffer mechanism, when the driving force of the hydraulic cylinder is too large and combined with long-term cutting, the two cutting blades are prone to collide and be damaged, this application provides a cutting mechanism for a vertical roll film bag-making packaging machine.

[0007] A cutting mechanism for a vertical roll film bag-making packaging machine provided by this application adopts the following technical solutions:

[0008] A cutting mechanism for a vertical roll film bag-making packaging machine, including a cutting tool holder, characterized in that: two sliding rods are fixedly connected to the inner walls of the shorter sides of the cutting tool holder, and a first movable plate, a second movable plate and a third movable plate are slidably connected to the outer walls of the two sliding rods. Two buffer springs are installed between the second movable plate and the third movable plate, and the two buffer springs are sleeved on the outer walls of the sliding rods. A tool holder is fixedly connected to the outer wall of the first movable plate facing the third movable plate, and a blade is fixedly installed on the outer wall of the third movable plate facing the first movable plate. The tool holder corresponds to the blade. A cylinder is fixedly installed on the outer wall of the cutting tool holder facing the first movable plate, and the output end of the cylinder is fixedly connected to the middle outer wall of the first movable plate. Linkage mechanisms for driving the relative movement of the first movable plate and the second movable plate are installed on the inner walls of the longer sides of the cutting tool holder.

[0009] Preferably, two limiting rods are fixedly connected to the outer wall of the third movable plate facing the second movable plate. The ends of the limiting rods far away from the third movable plate penetrate through the second movable plate and are fixedly connected with limiting blocks, and the limiting blocks are in contact with the second movable plate.

[0010] Preferably, the linkage mechanism includes driving walls rotatably connected to the inner walls of the middle sections of the longer sides of the cutting tool holder, and connecting rods are rotatably connected to both ends of the driving walls.

[0011] Preferably, second connecting plates are fixedly connected to the outer walls of both ends of the second movable plate, first connecting plates are fixedly connected to the outer walls of both ends of the first movable plate, and the ends of the connecting rods far away from the driving walls are respectively hinged to the second connecting plates and the first connecting plates.

[0012] In summary, the present application includes the following beneficial technical effects:

[0013] 1. By setting the cylinder to drive the first movable plate to drive the tool holder to move, at this time, through the mutual cooperation of the linkage mechanism, it is possible to synchronously drive the relative movement of the second movable plate and the first movable plate. Then, when the first movable plate and the second movable plate move closer, the tool holder and the blade are used to cut the packaging bag. When the tool holder contacts the blade, under the elastic force of the two buffer springs, it can buffer the excessive thrust of the cylinder, preventing the direct rigid contact between the tool holder and the blade and causing blade damage;

[0014] 2. Through the mutual cooperation of the cylinder and the linkage mechanism, a single cylinder is used to drive the relative synchronous movement of the first movable plate and the second movable plate to realize the cutting action. Compared with the prior art, it can ensure the synchronism of the relative movement of the first movable plate and the second movable plate, and can also reduce the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an overall schematic diagram of an embodiment of the application;

[0016] Figure 2 is a three-dimensional schematic diagram of an application embodiment;

[0017] Figure 3 is a partial cross-sectional view of an application embodiment.

[0018] Explanation of reference numerals: 1, cutting tool holder; 2, sliding rod; 3, first movable plate; 301, tool seat; 302, first connecting plate; 4, second movable plate; 401, second connecting plate; 5, third movable plate; 501, blade; 502, limiting rod; 503, limiting block; 6, buffer spring; 7, cylinder; 8, driving wall; 9, connecting rod. Detailed implementation manners

[0019] The following further elaborates on this application in conjunction with the attached Figures 1-3 drawings.

[0020] An embodiment of this application discloses a cutting mechanism for a vertical roll film bag-making packaging machine. Referring to Figures 1-3 , a cutting mechanism for a vertical roll film bag-making packaging machine includes a cutting tool holder 1. Two sliding rods 2 are fixedly connected to the shorter inner walls on both sides of the cutting tool holder 1. A first movable plate 3, a second movable plate 4, and a third movable plate 5 are slidably connected to the outer walls of the two sliding rods 2. Two buffer springs 6 are installed between the second movable plate 4 and the third movable plate 5. The two buffer springs 6 are sleeved on the outer walls of the sliding rods 2. A tool seat 301 is fixedly connected to the outer wall of the first movable plate 3 facing the third movable plate 5. A blade 501 is fixedly installed on the outer wall of the third movable plate 5 facing the first movable plate 3. The tool seat 301 corresponds to the blade 501. A cylinder 7 is fixedly installed on the outer wall of the cutting tool holder 1 facing the first movable plate 3. The output end of the cylinder 7 is fixedly connected to the middle outer wall of the first movable plate 3. A linkage mechanism for driving the relative movement of the first movable plate 3 and the second movable plate 4 is installed on the longer inner walls on both sides of the cutting tool holder 1.

[0021] Two limiting rods 502 are fixedly connected to the outer wall of the third movable plate 5 facing the second movable plate 4. The ends of the limiting rods 502 away from the third movable plate 5 penetrate through the second movable plate 4 and are fixedly connected to a limiting block 503. The limiting block 503 is in contact with the second movable plate 4.

[0022] The linkage mechanism includes a driving wall 8 rotatably connected to the middle inner walls on both longer sides of the cutting tool holder 1. Connecting rods 9 are rotatably connected to both ends of the driving wall 8.

[0023] Second connecting plates 401 are fixedly connected to the outer walls at both ends of the second movable plate 4. First connecting plates 302 are fixedly connected to the outer walls at both ends of the first movable plate 3. The ends of the connecting rods 9 away from the driving wall 8 are respectively hinged to the second connecting plates 401 and the first connecting plates 302.

[0024] The implementation principle of the cutting mechanism of the vertical film winding and bag making packaging machine in the embodiment of the present application is as follows: During use, the cutting tool holder 1 is installed at an appropriate position. When cutting is required, the cylinder 7 is started, and the output end of the cylinder 7 pushes the first movable plate 3 inward. At this time, the first movable plate 3 pushes the two left connecting rods 9 through the first connecting plate 302. The two left connecting rods 9 rotate and push the driving wall 8 to rotate counterclockwise inward. At this time, the other end of the driving wall 8 will pull the two right connecting rods 9 inward to move and rotate. The ends of the two right connecting rods 9 away from the driving wall 8 will pull the second connecting plate 401 inward to move. The second connecting plate 401 will drive the second movable plate 4 to move inward on the outer wall of the sliding rod 2. At this time, the second movable plate 4 moves closer to the first movable plate 3 synchronously. The second movable plate 4 will push the third movable plate 5 to move through the buffer spring 6. The blade 501 on the third movable plate 5 and the tool holder 301 on the first movable plate 3 approach each other to cut the packaging bag.

[0025] During cutting, when the driving force of the cylinder 7 is too large, after the tool holder 301 contacts the blade 501, it will reversely squeeze the third movable plate 5, causing the third movable plate 5 to move towards the second movable plate 4, thereby providing a buffer space. At this time, the third movable plate 5 and the second movable plate 4 cooperate to squeeze the buffer spring 6, and the buffer spring 6 deforms to generate elastic force. While playing a buffering role, its elastic force acts on the third movable plate 5, enabling the third movable plate 5 to effectively prevent rigid contact when the blade 501 is fixed and collides with the tool holder 301 during cutting at the maximum limit of contact with the tool holder 301, resulting in damage to the blade 501. It should be noted that when the third movable plate 5 moves towards the second movable plate 4, it slides on the inner wall of the second movable plate 4 with the driving limit rod 502. When the first movable plate 3 and the second movable plate 4 move away from each other, the elastic force of the buffer spring 6 will cause the third movable plate 5 to move away from the second movable plate 4. At this time, the limit rod 502 drives the limit block 503 to fit with the second movable plate 4, playing a limiting role on the third movable plate 5 to prevent the third movable plate 5 from moving too far away from the second movable plate 4 under the elastic force of the buffer spring 6.

[0026] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position relationship may change;

[0027] Second: In the drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments of the present disclosure are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally, the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0029] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, any equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A cutting mechanism for a vertical roll film bag-making packaging machine, including a cutting tool holder (1), characterized in that: On both sides of the shorter inner walls of the cutting tool holder (1), two sliding rods (2) are fixedly connected. The outer walls of the two sliding rods (2) are slidably connected with a first movable plate (3), a second movable plate (4) and a third movable plate (5). Two buffer springs (6) are installed between the second movable plate (4) and the third movable plate (5). The two buffer springs (6) are sleeved on the outer walls of the sliding rods (2). On the outer wall of the first movable plate (3) facing the third movable plate (5), a tool holder (301) is fixedly connected. On the outer wall of the third movable plate (5) facing the first movable plate (3), a blade (501) is fixedly installed. The tool holder (301) corresponds to the blade (501). On the outer wall of the cutting tool holder (1) facing the first movable plate (3), a cylinder (7) is fixedly installed. The output end of the cylinder (7) is fixedly connected to the middle outer wall of the first movable plate (3). On the longer inner walls of the two sides of the cutting tool holder (1), a linkage mechanism is installed for driving the relative movement of the first movable plate (3) and the second movable plate (4).

2. The cutting mechanism of a vertical film-rolling bag-making packaging machine according to claim 1, wherein: On the outer wall of the third movable plate (5) facing the second movable plate (4), two limiting rods (502) are fixedly connected. The ends of the limiting rods (502) far from the third movable plate (5) penetrate through the second movable plate (4) and are fixedly connected with limiting blocks (503). The limiting blocks (503) are in contact with the second movable plate (4).

3. The cutting mechanism of a vertical film-rolling bag-making packaging machine according to claim 1, characterized in that: The linkage mechanism includes a driving wall (8) rotatably connected to the middle inner walls of the longer two sides of the cutting tool holder (1). At both ends of the driving wall (8), connecting rods (9) are rotatably connected.

4. The cutting mechanism of a vertical roll film bag-making packaging machine according to claim 3, characterized in that: At both ends of the outer walls of the second movable plate (4), second connecting plates (401) are fixedly connected. At both ends of the outer walls of the first movable plate (3), first connecting plates (302) are fixedly connected. The ends of the connecting rods (9) far from the driving wall (8) are respectively hinged to the second connecting plates (401) and the first connecting plates (302).

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