Cutting device for packaging bag production

Abstract

The utility model relates to the technical field of packaging bag production, and discloses a cutting device for packaging bag production. The cutting device for packaging bag production comprises a supporting frame, a limiting frame is fixedly installed above the supporting frame, a limiting column is fixedly installed on the front side of the limiting frame, a fixing frame is fixedly installed above the limiting frame, a downward pressing piston is installed at the top end of the fixing frame in a penetrating and inserting mode, and a sliding rail is fixedly installed at the bottom end of the downward pressing piston; in the process that a piston is pressed downwards to drive a sliding rail to move downwards, a pressing plate makes contact with a supporting frame, so that the front side and the rear side of the cutting position of the plastic bag are pressed above the supporting frame, the top end of a supporting plate is higher than the top face of the supporting frame, and the supporting plate can limit the position of the plastic bag on the front side and the rear side of the cutting position of the plastic bag and support the plastic bag; in this way, the position of the plastic bag can be limited during cutting, the cutting position of the plastic bag is jacked up, the plastic bag is in a tightened state, and the situation that cutting is affected due to deformation of the plastic bag is prevented.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag production technology, specifically a cutting device for packaging bag production. Background Technology

[0002] Packaging bags are bags used to package various goods, facilitating transportation and storage during production and distribution. They are widely used in daily life and industrial production. In the manufacturing process of packaging bags, they need to be cut to specific dimensions for use; therefore, a cutting device for packaging bag production is proposed.

[0003] The existing Chinese utility model patent with publication number CN221913494U discloses a cutting device for packaging bag production, relating to the field of packaging bag processing technology. It includes a main body with a buffer mechanism at its top. The buffer mechanism includes a limiting groove, a limiting rod movably connected to the middle of the limiting groove, and a first spring externally mounted on the limiting rod. This utility model, through the cooperation of the limiting groove, limiting rod, base, first spring, and second spring, ensures that when the cutter cuts the packaging bag, the base contacts the top of the main body, causing the limiting rod to move within the limiting groove. This, in turn, causes the first and second springs to compress and stretch, generating elastic force to buffer the cutting pressure. This solves the problem of existing packaging bag production cutting devices easily causing blade damage during cutting, affecting the device's lifespan. This packaging bag production cutting device achieves the effect of buffering the force exerted by the cutter when cutting the packaging bag.

[0004] Packaging bags are generally made of plastic. When cutting, the packaging bag itself has a certain deformation capacity. However, the existing cutting device has a horizontal blade structure. When the cutting blade moves downward and comes into contact with the packaging bag during the cutting process, the packaging bag may deform under the influence of pressure. This may cause the cutting blade to fail to cut the packaging bag or cause the packaging bag to stretch, affecting the cutting effect. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, this utility model provides a cutting device for packaging bag production, which has the advantages of limiting the deformation of packaging bags and improving the cutting effect, thus solving the above-mentioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a cutting device for packaging bag production, comprising: a support frame, a limiting frame fixedly installed above the support frame, a limiting post fixedly installed on the front side of the limiting frame, a fixing frame fixedly installed above the limiting frame, a pressing piston inserted into the top of the fixing frame, a slide rail fixedly installed at the bottom end of the pressing piston, a connecting post inserted into the top of the slide rail, a limiting spring inserted into the outer side of the connecting post, a pressure plate fixedly installed at the bottom end of the connecting post, a transmission plate movably installed inside the slide rail, a cutter fixedly installed at the bottom end of the transmission plate, a connecting rod inserted into the inside of the support frame, a return spring inserted into the outer side of the connecting rod, and a support plate fixedly installed at the end of the return spring; the support frame can support the limiting frame.

[0009] As a preferred technical solution of this utility model, the support frame has a rectangular opening structure at its center, and the limiting frame is installed symmetrically above the support frame with the center of the support frame as the reference. There are four limiting posts, and the four limiting posts are installed equidistantly between the limiting frames. The limiting posts can move the transmission plate to the left while it moves down through the inclined sliding groove on the surface of the transmission plate.

[0010] As a preferred embodiment of this utility model, there are three downward pressing pistons, which are equidistantly installed on the top of the fixed frame. The downward pressing pistons penetrate the fixed frame, and the movable end of the downward pressing pistons points towards the support frame. The downward pressing pistons can drive the slide rail to move downward.

[0011] As a preferred technical solution of this utility model, the slide rail is movably connected to the fixed frame through the downward piston. The slide rail has a groove structure with a "T" shaped cross section facing left and right. The connecting column is symmetrically installed at the four corners of the slide rail with the center of the slide rail as the reference, and the connecting column and the slide rail are slidably connected. The slide rail can drive the transmission plate to move downward while allowing the left and right positions of the transmission plate to change.

[0012] As a preferred embodiment of this utility model, the top of the connecting column is provided with an annular protrusion structure, the limiting spring is located between the slide rail and the pressure plate, the center of the pressure plate is provided with an opening with the same size as the center opening structure of the support frame, and the surface of the transmission plate is provided with inclined sliding grooves that are equidistant from left to right; the pressure plate can limit the position of the plastic bag.

[0013] As a preferred embodiment of this utility model, the limiting post is located inside the slide groove structure of the transmission plate, the transmission plate and the slide rail form a sliding connection, the blade of the cutter has an inclined structure, and the cutter is located above the center of the support frame opening structure; the transmission plate can drive the cutter to move downward.

[0014] As a preferred embodiment of this utility model, the connecting rod is mirror-symmetrical about the center of the support frame and is symmetrically installed on the front and rear sides of the support frame. The connecting rod and the support frame are slidably connected. The support plate is mirror-symmetrically installed at the ends of the connecting rods on the front and rear sides of the support frame, and the top of the support plate has an inclined structure on the opposite side. The support plate can restrict the position of the plastic bag on the front and rear sides of the plastic bag cutting point.

[0015] Compared with the prior art, the present invention provides a cutting device for packaging bag production, which has the following advantages:

[0016] 1. This utility model utilizes a pressure plate, which is installed below the slide rail via connecting columns. The connecting columns are symmetrically installed at the four corners of the slide rail with the center as the reference, and a sliding connection is formed between the connecting columns and the slide rail. The top of the connecting column is provided with an annular protrusion structure. A limiting spring is located between the slide rail and the pressure plate. The center of the pressure plate is provided with an opening with the same size as the center opening structure of the support frame. During the downward movement of the slide rail driven by the downward piston, the pressure plate will contact the support frame, thereby pressing the front and rear sides of the plastic bag cutting position onto the support frame. At the same time, the top of the support plate is higher than the top surface of the support frame. The support plate can restrict the position of the plastic bag on the front and rear sides of the plastic bag cutting position and support the plastic bag. This method can restrict the position of the plastic bag during cutting, lift the plastic bag cutting position, keep the plastic bag in a taut state, and prevent the plastic bag from deforming and affecting the cutting.

[0017] 2. This utility model utilizes limiting posts. The limiting frame is installed symmetrically above the support frame, mirror-image-symmetrically with the center of the support frame as the reference. There are four limiting posts, equidistantly spaced between the limiting frames. The surface of the transmission plate has equidistant inclined grooves. The limiting posts are located inside the groove structure of the transmission plate, forming a sliding connection between the transmission plate and the slide rail. Simultaneously, the top of the transmission plate has a "T"-shaped protrusion that fits into the "T"-shaped groove inside the slide rail. The top surface of the slide rail is fixedly connected to the pressing piston. As the pressing piston moves the slide rail downwards, the slide rail drives the transmission plate. The cutting blade moves downwards, and the limiting post causes the transmission plate to move to the left through the sliding groove structure on the surface of the transmission plate. This causes the cutter to move downwards while creating a relative displacement between itself and the plastic bag. The cutting blade has an inclined structure, and when cutting the plastic bag, the rightmost end of the cutting blade contacts the right edge of the plastic bag. During cutting, the contact point between the cutter and the plastic bag moves to the left as the cutter slides downwards. This method reduces the contact area between the cutter and the plastic bag during the cutting process, thereby increasing the pressure. The relative displacement between the cutting blade and the plastic bag also improves the cutting effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the limiting post of this utility model;

[0020] Figure 3 This is a schematic diagram of the pressure plate installation structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the support plate installation structure of this utility model;

[0022] The components are: 1. Support frame; 11. Limiting frame; 12. Limiting post; 13. Fixing frame; 14. Pressing piston; 15. Slide rail; 16. Connecting post; 17. Limiting spring; 18. Pressure plate; 19. Transmission plate; 110. Cutting knife; 111. Connecting rod; 112. Return spring; 113. Support plate. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 1 - Figure 4In this embodiment, a cutting device for packaging bag production includes: a support frame 1, a limiting frame 11 fixedly installed above the support frame 1, a limiting post 12 fixedly installed on the front side of the limiting frame 11, a fixing frame 13 fixedly installed above the limiting frame 11, a pressing piston 14 inserted through the top of the fixing frame 13, a slide rail 15 fixedly installed at the bottom end of the pressing piston 14, a connecting post 16 inserted through the top of the slide rail 15, a limiting spring 17 inserted through the outer side of the connecting post 16, a pressure plate 18 fixedly installed at the bottom end of the connecting post 16, a transmission plate 19 movably installed inside the slide rail 15, a cutter 110 fixedly installed at the bottom end of the transmission plate 19, a connecting rod 111 inserted through the inside of the support frame 1, a return spring 112 inserted through the outer side of the connecting rod 111, and a support plate 113 fixedly installed at the end of the return spring 112.

[0027] The support frame 1 has a rectangular opening at its center. The limiting frame 11 is symmetrically mounted above the support frame 1, mirror-image symmetrically with respect to its center. There are four limiting posts 12, equidistantly spaced between the limiting frames 11. There are three pressing pistons 14, equidistantly spaced at the top of the fixed frame 13. The pressing pistons 14 penetrate the fixed frame 13, with their movable ends pointing towards the support frame 1. The slide rail 15 is movably connected to the fixed frame 13 via the pressing pistons 14. The slide rail 15 has a T-shaped groove structure inside, oriented left and right. Connecting posts 16 are symmetrically mounted at the four corners of the slide rail 15, slidably connected to it. The top of the connecting posts 16 is... The support frame 1 has an annular protrusion structure, a limiting spring 17 located between the slide rail 15 and the pressure plate 18, a center hole in the pressure plate 18 with the same size as the center hole structure of the support frame 1, a surface of the transmission plate 19 with equidistant inclined grooves, a limiting post 12 located inside the groove structure of the transmission plate 19, a sliding connection between the transmission plate 19 and the slide rail 15, an inclined blade of the cutter 110, the cutter 110 located above the center of the opening structure of the support frame 1, a connecting rod 111 mirror-symmetrical about the center of the support frame 1, and symmetrically installed on the front and rear sides of the support frame 1, forming a sliding connection between the connecting rod 111 and the support frame 1, and a support plate 113 mirror-symmetrically installed at the ends of the connecting rod 111 on the front and rear sides of the support frame 1, with the top of the support plate 113 having an inclined structure on the opposite side.

[0028] Specifically, the support frame 1 supports the limiting frame 11 and restricts the sliding direction of the connecting rod 111. The limiting frame 11 is fixedly connected to the limiting post 12, restricting the position of the limiting post 12. When the transmission plate 19 moves downward, the force on the limiting post 12 is transmitted to the limiting frame 11. The limiting post 12 can move the transmission plate 19 to the left while it moves downward through the inclined groove on the surface of the transmission plate 19. The pressing piston 14 can drive the slide rail 15 to move downward. The top of the transmission plate 19 is provided with a "T"-shaped protrusion that fits into the "T"-shaped groove inside the slide rail 15. The slide rail 15 can allow the left and right positions of the transmission plate 19 to change while driving the transmission plate 19 to move downward. The connecting post 16 can... The position of the limiting spring 17 is limited. When the limiting spring 17 is compressed, the reaction force applied to the pressure plate 18 can press the pressure plate 18 above the support frame 1. The pressure plate 18 can limit the position of the plastic bag. The transmission plate 19 can drive the cutter 110 to move downward. The cutter 110 can cut the plastic bag. The connecting rod 111 and the support frame 1 form a sliding connection. When the cutter 110 is between the support plates 113, the cutter 110 will drive the support plates 113 to press the return spring 112 to both sides. The return spring 112 can facilitate the return of the connecting rod 111. The top of the support plate 113 is higher than the top surface of the support frame 1. The support plate 113 can limit the position of the plastic bag on both sides before and after the plastic bag is cut.

[0029] In use, the pressure plate 18 is installed below the slide rail 15 via connecting posts 16. The connecting posts 16 are symmetrically installed at the four corners of the slide rail 15 with the center of the slide rail 15 as the reference, and a sliding connection is formed between the connecting posts 16 and the slide rail 15. The top of the connecting post 16 is provided with an annular protrusion structure. The limiting spring 17 is located between the slide rail 15 and the pressure plate 18. The center of the pressure plate 18 is provided with an opening with the same size as the center opening structure of the support frame 1. When the pressing piston 14 drives the slide rail 15 to move downward, the pressure plate 18 will contact the support frame 1, thereby cutting the plastic bag at the front. The rear two sides press against the support frame 1, and the top of the support plate 113 is higher than the top surface of the support frame 1. The support plate 113 can restrict the position of the plastic bag on both the front and rear sides of the plastic bag cutting point and support the plastic bag. This method can restrict the position of the plastic bag during cutting, lift the plastic bag cutting point, and keep the plastic bag in a taut state to prevent deformation of the plastic bag from affecting the cutting. The limiting frame 11 is installed symmetrically in front and behind the support frame 1 with the center of the support frame 1 as the reference. There are four limiting posts 12, and the four limiting posts 12 are installed equidistantly on the limiting frame. Between 11, the surface of the transmission plate 19 is provided with inclined grooves at equal intervals on the left and right. The limiting post 12 is located inside the groove structure of the transmission plate 19. The transmission plate 19 and the slide rail 15 form a sliding connection. At the same time, the top of the transmission plate 19 is provided with a "T"-shaped protrusion that fits into the "T"-shaped groove inside the slide rail 15. The top surface of the slide rail 15 is fixedly connected to the pressing piston 14. During the process of the pressing piston 14 driving the slide rail 15 to move downward, the slide rail 15 will drive the transmission plate 19 to move downward, and the limiting post 12 will cause the transmission plate 19 to move downward through the groove structure on the surface of the transmission plate 19. The leftward position causes the cutter 110 to move downward while simultaneously creating a relative displacement between itself and the plastic bag. Furthermore, the blade of the cutter 110 has an inclined structure, so when cutting the plastic bag, the rightmost end of the blade contacts the right edge of the plastic bag. During cutting, the contact point between the cutter 110 and the plastic bag moves to the left as the cutter 110 slides downward. This method reduces the contact area between the cutter 110 and the plastic bag during cutting, thereby increasing pressure. The relative displacement between the blade of the cutter 110 and the plastic bag further improves the cutting effect.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting device for producing packaging bags, characterized in that, include: A support frame (1) is provided, with a limiting frame (11) fixedly installed on its upper part. A limiting post (12) is fixedly installed on the front side of the limiting frame (11). A fixing frame (13) is fixedly installed on the upper part of the limiting frame (11). A pressing piston (14) is inserted through the top of the fixing frame (13). A slide rail (15) is fixedly installed on the bottom end of the pressing piston (14). A connecting post (16) is inserted through the upper part of the slide rail (15). The outer side of the connecting post (16) is... A limit spring (17) is inserted and installed. A pressure plate (18) is fixedly installed at the bottom end of the connecting column (16). A transmission plate (19) is movably installed inside the slide rail (15). A cutter (110) is fixedly installed at the bottom end of the transmission plate (19). A connecting rod (111) is inserted and installed inside the support frame (1). A return spring (112) is inserted and installed on the outside of the connecting rod (111). A support plate (113) is fixedly installed at the end of the return spring (112).

2. The cutting device for packaging bag production according to claim 1, characterized in that: The support frame (1) has a rectangular opening structure at its center. The limiting frame (11) is installed symmetrically above the support frame (1) with the center of the support frame (1) as the reference. There are four limiting posts (12), and the four limiting posts (12) are installed equidistantly between the limiting frames (11).

3. The cutting device for packaging bag production according to claim 1, characterized in that: There are three downward pistons (14), and the three downward pistons (14) are installed at equal intervals on the top of the fixed frame (13). The downward pistons (14) penetrate the fixed frame (13) and the movable end of the downward pistons (14) points to the support frame (1).

4. The cutting device for packaging bag production according to claim 1, characterized in that: The slide rail (15) is connected to the fixed frame (13) by a downward piston (14). The slide rail (15) has a groove structure with a "T" shaped cross section facing left and right. The connecting column (16) is symmetrically installed at the four corners of the slide rail (15) with the center of the slide rail (15) as the reference, and the connecting column (16) and the slide rail (15) are connected in a sliding manner.

5. A cutting device for packaging bag production according to claim 1, characterized in that: The top of the connecting column (16) is provided with an annular protrusion structure, the limiting spring (17) is located between the slide rail (15) and the pressure plate (18), the center of the pressure plate (18) is provided with an opening with the same size as the center opening structure of the support frame (1), and the surface of the transmission plate (19) is provided with inclined grooves that are equidistant from left to right.

6. A cutting device for packaging bag production according to claim 1, characterized in that: The limiting post (12) is located inside the groove structure of the transmission plate (19). The transmission plate (19) and the slide rail (15) form a sliding connection. The blade of the cutter (110) is an inclined structure. The cutter (110) is located above the center of the opening structure of the support frame (1).

7. A cutting device for packaging bag production according to claim 1, characterized in that: The connecting rod (111) is mirror-symmetrical about the center of the support frame (1) and is symmetrically installed on the front and rear sides of the support frame (1). The connecting rod (111) and the support frame (1) form a sliding connection. The support plate (113) is mirror-symmetrically installed on the front and rear sides of the support frame (1) at the ends of the connecting rod (111), and the top of the support plate (113) is on an inclined surface on the opposite side.

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