Sealing equipment for packaging bag production

Abstract

The utility model relates to the technical field of packaging bag production, and discloses sealing equipment for packaging bag production. The sealing equipment for packaging bag production comprises a bottom plate, a supporting frame is fixedly installed above the bottom plate, a PLC is fixedly installed above the supporting frame, a touch screen is fixedly installed above the PLC, the contraction amount of a spring is controlled by adjusting the elongation amount of a downward pressing piston, and therefore the sealing effect is achieved. The pressure sensor can monitor the magnitude of the pressure borne by the fixed plate after the fixed plate is pressed, the PLC can adjust the elongation of the downward pressing piston according to the monitoring data of the pressure sensor, a pressure threshold value is set through the touch screen, and the pressure threshold value is adjusted through the touch screen. The PLC controls the downward pressing piston to continuously extend before monitoring data of the pressure sensor is lower than a pressure threshold value until the counter-acting force applied to the movable plate by the spring is equal to the set pressure threshold value, and the sealing pressure can be conveniently adjusted in the mode.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag production technology, specifically to a sealing 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. Actual figures show that 80% of used plastic bags end up in landfills like regular waste, with only 7% being recycled.

[0003] The existing Chinese utility model patent with publication number CN216970223U discloses a sealing device for food packaging bag processing, including a base, fixed feet, a sliding door, a conveyor belt support, a conveyor belt, a transmission device, a control box, a lifting support, a clamping device, a feeding device, a lifting motor, and a heating sealing component. The bottom of the base is connected to the fixed feet; the side of the base is slidably connected to the sliding door; a storage box is provided inside the sliding door; the storage box is connected to the bottom of the inner wall of the base; the top of the base is rotatably connected to the transmission device; the transmission device has multiple sets of equally spaced clamps; the top of the base is connected to the lifting support; the top of the lifting support is connected to the lifting motor; the output end of the lifting motor is connected to the heating sealing component; the transmission direction of the transmission device is towards the heating sealing component. This utility model, through its bidirectional symmetrical heating sealing structure, can effectively adapt to different types of raw materials, thereby ensuring the stability of the device during long-term continuous processing.

[0004] After sealing, the packaging bag needs to be cut into a serrated shape so that users can tear the packaging open. Currently, cutting equipment is generally used to cut the plastic bag after sealing, which affects production efficiency. In addition, during the sealing process, it is necessary to ensure that there is a certain relative pressure on the top and bottom sides of the packaging bag. Excessive sealing pressure may cause the aluminum foil layer of the packaging bag to break or be damaged, while insufficient pressure will not allow the packaging bag to stick. The pressure adjustment of existing sealing devices is very inconvenient. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a sealing device for packaging bag production, which has the advantages of being able to cut packaging bags while sealing and being able to easily adjust the sealing pressure, thus solving the aforementioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a sealing device for packaging bag production, comprising: a base plate, a support frame fixedly installed above the base plate, a PLC controller fixedly installed above the support frame, a touch screen fixedly installed above the PLC controller, a pressing piston inserted through the top of the support frame, a connecting plate fixedly installed at the bottom of the pressing piston, a limiting post inserted through the inside of the connecting plate, a limiting bolt inserted through the top of the limiting post, a spring inserted through the outside of the limiting post, a movable plate fixedly installed at the bottom of the limiting post, a pressure sensor fixedly installed above the base plate, a fixed plate fixedly installed at the top of the pressure sensor, a heating plate fixedly installed on the bottom surface of the fixed plate and the top surface of the movable plate, a connecting frame fixedly installed on the right side of the connecting plate, and a cutter fixedly installed at the bottom of the connecting frame; the PLC controller can adjust the extension of the pressing piston according to the monitoring data of the pressure sensor to adjust the compression of the spring.

[0009] As a preferred embodiment of this utility model, the pressing piston passes through the support frame, and the pressing piston and the support frame are fixedly connected, with the movable end of the pressing piston pointing towards the bottom plate; the pressing piston can drive the connecting plate to move downward when it extends.

[0010] As a preferred embodiment of this utility model, the center of the top surface of the connecting plate is fixedly connected to the movable end of the pressing piston, and the limiting post is installed symmetrically at the front and rear ends of the connecting plate with the center of the connecting plate as a reference; the connecting plate can limit the position of the limiting post.

[0011] As a preferred technical solution of this utility model, the limiting post and the connecting plate form a sliding connection, the top diameter of the limiting bolt is larger than the outer diameter of the limiting post, and the spring is located between the connecting plate and the movable plate; after the movable plate at the bottom of the limiting post contacts the fixed plate, the connecting plate will continue to move downward and compress the spring as the pressing piston extends, and the amount of spring contraction can be controlled by adjusting the extension of the pressing piston.

[0012] As a preferred technical solution of this utility model, the movable plate is connected to the connecting plate through the limiting post, and the pressure sensor is installed symmetrically on the front and back sides of the bottom surface of the fixed plate with the center of the fixed plate as the reference. The position of the pressure sensor is restricted by the bottom plate, and the pressure sensor can monitor the pressure on the fixed plate after the fixed plate is pressed.

[0013] As a preferred embodiment of this utility model, the top surface of the fixed plate and the bottom surface of the movable plate are provided with interlocking toothed structures, and the right side of the fixed plate and the movable plate are provided with toothed protrusions that engage with the cutter; the movable plate can clamp the packaging bag with the fixed plate.

[0014] As a preferred embodiment of this utility model, the front side of the cutter contacts the toothed protrusion structure on the right side of the fixed plate and the movable plate, and the cutter is fixedly connected to the connecting plate through the connecting frame; the cutter can perform toothed cutting on the edge of the packaging bag when it moves downward.

[0015] Compared with the prior art, this utility model provides a sealing device for packaging bag production, which has the following beneficial effects:

[0016] 1. This utility model utilizes a spring located between a connecting plate and a movable plate. The movable plate is connected to the connecting plate via a limiting post. The connecting plate is fixedly mounted on the movable end of the pressing piston. The pressing piston drives the connecting plate downward. After the movable plate at the bottom of the limiting post contacts the fixed plate, the connecting plate continues to move downward as the pressing piston extends, compressing the spring. By adjusting the extension of the pressing piston, the contraction of the spring is controlled, thereby adjusting the vertical downward reaction force exerted by the spring on the movable plate during contraction. The position of the pressure sensor is restricted by the base plate. After the fixed plate is compressed, the pressure sensor can monitor the pressure on the fixed plate. The PLC controller can adjust the extension of the pressing piston based on the monitoring data of the pressure sensor. A pressure threshold can be set via a touch screen. The PLC controller controls the pressing piston to continue extending until the reaction force exerted by the spring on the movable plate is equal to the set pressure threshold before the pressure sensor monitoring data falls below the pressure threshold. This method facilitates the adjustment of sealing pressure.

[0017] 2. This utility model features a cutter that is fixedly connected to a connecting plate via a connecting frame. The right side of both the fixed plate and the movable plate has a toothed protrusion that engages with the cutter. The front of the cutter contacts the toothed protrusion on the right side of both the fixed plate and the movable plate. When the piston extends downwards, the movable plate contacts the fixed plate first. After the movable plate and fixed plate clamp the packaging bag, the piston needs to adjust the relative pressure between the movable plate and the fixed plate, which will continue to drive the connecting plate downwards. The cutter will then perform toothed cutting on the packaging bag as the connecting plate moves downwards. This method allows for toothed cutting of the packaging bag's edges during the sealing process, improving production efficiency. 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 movable plate installation structure of this utility model;

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

[0021] Figure 4 This is a schematic diagram of the fitting structure between the cutter and the fixing plate of this utility model;

[0022] The components are: 1. Base plate; 11. Support frame; 12. PLC controller; 13. Touch screen; 14. Downward piston; 15. Connecting plate; 16. Limiting post; 17. Limiting bolt; 18. Spring; 19. Movable plate; 110. Pressure sensor; 111. Fixed plate; 112. Heating plate; 113. Connecting frame; 114. Cutter. 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 sealing device for producing packaging bags includes: a base plate 1, a support frame 11 fixedly installed on the top of the base plate 1, a PLC controller 12 fixedly installed on the top of the support frame 11, a touch screen 13 fixedly installed on the top of the PLC controller 12, a pressing piston 14 inserted through the top of the support frame 11, a connecting plate 15 fixedly installed at the bottom of the pressing piston 14, a limiting post 16 inserted through the inside of the connecting plate 15, a limiting bolt 17 inserted through the top of the limiting post 16, a spring 18 inserted through the outside of the limiting post 16, a movable plate 19 fixedly installed at the bottom of the limiting post 16, a pressure sensor 110 fixedly installed on the top of the base plate 1, a fixed plate 111 fixedly installed at the top of the pressure sensor 110, an electric heating plate 112 fixedly installed on the bottom surface of the fixed plate 111 and the top surface of the movable plate 19, a connecting frame 113 fixedly installed on the right side of the connecting plate 15, and a cutter 114 fixedly installed at the bottom of the connecting frame 113.

[0027] The downward piston 14 passes through the support frame 11, and a fixed connection is formed between the downward piston 14 and the support frame 11. The movable end of the downward piston 14 points towards the base plate 1. The center of the top surface of the connecting plate 15 is fixedly connected to the movable end of the downward piston 14. The limiting post 16 is mirror-symmetrically installed at both ends of the connecting plate 15 with the center of the connecting plate 15 as a reference. A sliding connection is formed between the limiting post 16 and the connecting plate 15. The top diameter of the limiting bolt 17 is larger than the outer diameter of the limiting post 16. The spring 18 is located between the connecting plate 15 and the movable plate 19. The movable plate 19 is limited by the limiting bolt 18. The column 16 and the connecting plate 15 are connected in a movable manner. The pressure sensor 110 is mirror-symmetrically mounted on the front and rear sides of the bottom surface of the fixed plate 111 with the center of the fixed plate 111 as the reference. The top surface of the fixed plate 111 and the bottom surface of the movable plate 19 are provided with interlocking toothed structures. The right side of the fixed plate 111 and the movable plate 19 are provided with toothed protrusions that engage with the cutter 114. The front side of the cutter 114 contacts the toothed protrusions on the right side of the fixed plate 111 and the movable plate 19. The cutter 114 is fixedly connected to the connecting plate 15 through the connecting bracket 113.

[0028] Specifically, the base plate 1 restricts the position of the support frame 11. While supporting the PLC controller 12, the support frame 11 is fixedly connected to the lower piston 14 via an opening structure on its left side that engages with the lower piston 14, preventing the lower piston 14 from sliding during extension. The PLC controller 12 can adjust the extension of the lower piston 14 based on the monitoring data from the pressure sensor 110, thereby adjusting the compression of the spring 18. The touchscreen 13 allows for easy adjustment of the pressure threshold of the PLC controller 12. The lower piston 14 points towards the base plate 1, and when it extends, it can drive the connecting plate 15 downwards. The connecting plate 15 restricts the position of the limiting post 16, and a sliding connection is formed between the limiting post 16 and the connecting plate 15. After the movable plate 19 contacts the fixed plate 111, the connecting plate 15 will continue to move downward as the pressing piston 14 extends, compressing the spring 18. By adjusting the extension of the pressing piston 14, the contraction of the spring 18 can be controlled, thereby adjusting the vertical downward reaction force exerted by the spring 18 on the movable plate 19 when it contracts. The movable plate 19 can clamp the packaging bag with the fixed plate 111. The position of the pressure sensor 110 is restricted by the base plate 1. After the fixed plate 111 is pressed, the pressure sensor 110 can monitor the pressure on the fixed plate 111. The heating plate 112 can conduct heat to the fixed plate 111 and the movable plate 19. The connecting frame 113 can restrict the position of the cutter 114. The cutter 114 can make a toothed cut on the edge of the packaging bag when it moves downward.

[0029] In use, spring 18 is located between connecting plate 15 and movable plate 19. Movable plate 19 is movably connected to connecting plate 15 via limiting post 16. Connecting plate 15 is fixedly installed on the movable end of pressing piston 14. Pressing piston 14 drives connecting plate 15 to move downward. After movable plate 19 at the bottom of limiting post 16 contacts fixed plate 111, connecting plate 15 continues to move downward as pressing piston 14 extends, compressing spring 18. By adjusting the extension of pressing piston 14, the contraction of spring 18 is controlled, thereby adjusting the vertical downward reaction force exerted by spring 18 on movable plate 19 when contracting. The position of pressure sensor 110 is restricted by base plate 1. After fixed plate 111 is compressed, pressure sensor 110 can monitor the pressure on fixed plate 111. PLC controller 12 can adjust the extension of pressing piston 14 based on the monitoring data of pressure sensor 110. Pressure threshold is set via touch screen 13. PLC controller 12 adjusts the pressure sensor... Before the monitored data of the device 110 falls below the pressure threshold, the control piston 14 continues to extend until the reaction force exerted by the spring 18 on the movable plate 19 is equal to the set pressure threshold. This method facilitates the adjustment of sealing pressure. The cutter 114 is fixedly connected to the connecting plate 15 through the connecting bracket 113. The right side of the fixed plate 111 and the movable plate 19 is provided with toothed protrusions that engage with the cutter 114. The front side of the cutter 114 contacts the toothed protrusions on the right side of the fixed plate 111 and the movable plate 19. When the piston 14 extends, the movable plate 19 contacts the fixed plate 111 first. After the movable plate 19 and the fixed plate 111 clamp the packaging bag, the piston 14 needs to adjust the relative pressure between the movable plate 19 and the fixed plate 111, which will continue to drive the connecting plate 15 to move downward. The cutter 114 will move downward with the connecting plate 15 to perform toothed cutting on the packaging bag. This method can perform toothed cutting on the edge of the packaging bag during the sealing process to improve production efficiency.

[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 sealing device for producing packaging bags, characterized in that, include: A base plate (1) is provided, on which a support frame (11) is fixedly installed. A PLC controller (12) is fixedly installed above the support frame (11), and a touch screen (13) is fixedly installed above the PLC controller (12). A downward piston (14) is inserted through the top of the support frame (11), and a connecting plate (15) is fixedly installed at the bottom of the downward piston (14). A limit post (16) is inserted through the interior of the connecting plate (15), and a limit bolt (17) is inserted through the top of the limit post (16). A spring (18) is inserted and installed on the outside of the positioning post (16). A movable plate (19) is fixedly installed at the bottom end of the positioning post (16). A pressure sensor (110) is fixedly installed on the top of the base plate (1). A fixed plate (111) is fixedly installed on the top of the pressure sensor (110). An electric heating plate (112) is fixedly installed on the bottom surface of the fixed plate (111) and the top surface of the movable plate (19). A connecting frame (113) is fixedly installed on the right side of the connecting plate (15). A cutter (114) is fixedly installed at the bottom end of the connecting frame (113).

2. The sealing equipment for packaging bag production according to claim 1, characterized in that: The pressing piston (14) passes through the support frame (11), and the pressing piston (14) and the support frame (11) are fixedly connected. The movable end of the pressing piston (14) points to the bottom plate (1).

3. The sealing equipment for packaging bag production according to claim 1, characterized in that: The center of the top surface of the connecting plate (15) is fixedly connected to the movable end of the pressing piston (14), and the limiting post (16) is installed symmetrically at the front and rear ends of the connecting plate (15) with the center of the connecting plate (15) as the reference.

4. The sealing equipment for packaging bag production according to claim 1, characterized in that: The limiting post (16) and the connecting plate (15) form a sliding connection. The top diameter of the limiting bolt (17) is larger than the outer diameter of the limiting post (16). The spring (18) is located between the connecting plate (15) and the movable plate (19).

5. A sealing device for producing packaging bags according to claim 1, characterized in that: The movable plate (19) is connected to the connecting plate (15) by the limiting post (16), and the pressure sensor (110) is installed symmetrically on the front and back sides of the bottom surface of the fixed plate (111) with the center of the fixed plate (111) as the reference.

6. A sealing device for producing packaging bags according to claim 1, characterized in that: The top surface of the fixed plate (111) and the bottom surface of the movable plate (19) are provided with intermeshing toothed structures, and the right side of the fixed plate (111) and the movable plate (19) are provided with toothed protrusions that engage with the cutter (114).

7. A sealing device for producing packaging bags according to claim 1, characterized in that: The front side of the cutter (114) contacts the toothed protrusion on the right side of the fixed plate (111) and the movable plate (19), and the cutter (114) is fixedly connected to the connecting plate (15) through the connecting bracket (113).

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