Sealing cutter structure of bag making machine

Abstract

The utility model discloses a sealing cutter structure of a bag making machine, which comprises a working table, an adjustable sealing cutter mechanism is rotatably arranged on the working table, a rotary adjusting mechanism is fixedly arranged in the working table, and the rotary adjusting mechanism is connected with the adjustable sealing cutter mechanism and is used for driving the adjustable sealing cutter mechanism to rotate. The adjustable sealing cutter mechanism comprises a supporting shaft, supporting rods, a support, an electric telescopic rod, a lifting plate, a heat sealing cutter, an electric heating rod and a pointer, the supporting shaft is rotationally connected with the workbench, the supporting rods are fixed to the left side and the right side of the supporting shaft respectively, penetrate through the workbench and are in sliding contact with the workbench, and the upper ends of the supporting rods are fixed to the support. Two electric telescopic rods are fixed to the support, the telescopic ends of the electric telescopic rods are fixed to the lifting plate, the heat sealing cutter is fixed to the lower side of the lifting plate, and an electric heating rod inserted into the heat sealing cutter is installed on the heat sealing cutter. The heat-sealing device is convenient to adjust, and the heat-sealing angle can be conveniently controlled according to requirements.

Description

Technical Field

[0001] This utility model relates to the field of bag making machine technology, and in particular to a sealing knife structure for a bag making machine. Background Technology

[0002] A bag-making machine is a machine that produces various plastic and other material packaging bags. Its processing range includes packaging bags of various sizes, thicknesses, and specifications made of plastic or other materials, with plastic packaging bags being the primary product. The sealing knife is the device in the bag-making machine used to seal the bag opening.

[0003] Chinese patent CN211138309U discloses a heat-sealing cutter structure for a plastic bag making machine, including a base. Support legs are fixedly connected to the bottom of the base, and pads are fixedly connected to the bottom of the support legs. Anti-slip rubber sleeves are fitted onto the outer surfaces of the pads. A reinforcing rod is fixedly connected between every two support legs. This heat-sealing cutter structure, by setting a pressure plate directly below the heat-sealing cutter located at the top of the base, allows the device to change the type of bag being made simply by moving the heat-sealing cutter. This effectively avoids the drawbacks of previous bag making machines that used a single-blade design, requiring the movement of both the upper and lower blades when changing bag types. This effectively reduces waste, increases machine speed, saves time, reduces costs, improves work efficiency, and enhances the quality of the finished product.

[0004] When producing packaging bags with beveled edges, a heat-sealing knife is required for oblique sealing. The aforementioned patent can only cut horizontal heat-sealing slits straight up and down, and cannot adjust the angle to achieve oblique sealing of the bag, making it difficult to meet different usage needs. Therefore, in view of the above situation, there is an urgent need to develop a bag-making machine sealing knife structure that is easy to adjust and allows for easy control of the heat-sealing angle according to needs, in order to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0005] The purpose of this utility model is to provide a sealing knife structure for a bag making machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A sealing knife structure for a bag-making machine includes a worktable, an adjustable sealing knife mechanism, and a rotary adjustment mechanism. The adjustable sealing knife mechanism is rotatably mounted on the worktable, and the rotary adjustment mechanism is fixedly mounted inside the worktable. The rotary adjustment mechanism is connected to the adjustable sealing knife mechanism and is used to drive the adjustable sealing knife mechanism to rotate. The adjustable sealing knife mechanism includes: a support shaft, a support rod, a bracket, an electric telescopic rod, a lifting plate, a heat-sealing knife, a heating rod, and a pointer. The support shaft is rotatably connected to the worktable. A support rod is fixed on both the left and right sides of the support shaft. The support rod passes through the worktable and slides in contact with it. The upper end of the support rod is fixed to the bracket. Two electric telescopic rods are fixed on the bracket. The telescopic ends of the electric telescopic rods are fixed to the lifting plate. The heat-sealing knife is fixed to the lower side of the lifting plate. A heating rod inserted into the heat-sealing knife is installed on the heat-sealing knife. A pointer is fixed on the left side of the bracket. An angle scale line is provided on the worktable, and the pointer points to the angle scale line.

[0008] Preferably, the rotation adjustment mechanism includes a drive motor, a pinion gear, and a large gear. The drive motor is fixed inside the worktable, and a pinion gear is fixed on the output shaft of the drive motor. A large gear meshing with the pinion gear is provided on one side of the pinion gear, and the large gear is fixed on a support shaft.

[0009] Preferably, the transmission ratio between the pinion and the gear is 3:1.

[0010] Preferably, the workbench is provided with an arc-shaped groove for rotating the support rod.

[0011] The beneficial effects of this utility model are as follows: In use, the sealing knife structure of this bag-making machine first heats the heat-sealing knife to a high temperature using an electric heating rod. The bag is then passed under the heat-sealing knife, and the electric telescopic rod moves the heat-sealing knife downwards, pressing it onto the bag. The high temperature softens the bag at the contact point between the heat-sealing knife and the bag, causing them to stick together. Then, the heat-sealing knife is moved back to its original position, and the indentation on the bag gradually cools and solidifies, thus achieving a seal. Furthermore, a drive motor rotates a small gear and a large gear, which in turn rotates a support shaft. This support shaft, in turn, rotates a support rod, bracket, electric telescopic rod, lifting plate, and heat-sealing knife. The tilt angle of the heat-sealing knife can be observed using a pointer and angle scale, thus achieving oblique heat sealing. In summary, this utility model is easy to adjust and allows for convenient control of the heat-sealing angle according to requirements. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 .

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0014] Figure 3 This is a schematic diagram of the oblique cut state of this utility model.

[0015] Figure 4 This is a partial structural schematic diagram of the present invention.

[0016] Legend:

[0017] 1. Workbench; 101. Arc-shaped slide rail; 102. Angle scale line; 2. Adjustable sealing knife mechanism; 201. Support shaft; 202. Support rod; 203. Bracket; 204. Electric telescopic rod; 205. Lifting plate; 206. Heat sealing knife; 207. Heating rod; 208. Pointer; 3. Rotation adjustment mechanism; 301. Drive motor; 302. Small gear; 303. Large gear; 4. PLC controller. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Specific implementation examples are given below.

[0020] See Figures 1-4In this embodiment of the utility model, a sealing knife structure for a bag-making machine includes a worktable 1, an adjustable sealing knife mechanism 2, and a rotation adjustment mechanism 3. The adjustable sealing knife mechanism 2 is rotatably mounted on the worktable 1, and the rotation adjustment mechanism 3 is fixedly mounted inside the worktable 1. The rotation adjustment mechanism 3 is connected to the adjustable sealing knife mechanism 2 and is used to drive the adjustable sealing knife mechanism 2 to rotate. The adjustable sealing knife mechanism 2 includes: a support shaft 201, a support rod 202, a bracket 203, an electric telescopic rod 204, a lifting plate 205, a heat sealing knife 206, an electric heating rod 207, and a pointer 208. The support shaft 201 is rotatably connected to the worktable 1, and a support rod 202 is fixed on each of the left and right sides of the support shaft 201. The support rod 202 is slidably contacted by a penetrating workbench 1. The workbench 1 is provided with an arc-shaped groove 101 for the rotation of the support rod 202. The upper end of the support rod 202 is fixed to a bracket 203. Two electric telescopic rods 204 are fixed on the bracket 203. The telescopic ends of the electric telescopic rods 204 are fixed to a lifting plate 205. The heat sealing knife 206 is fixed to the lower side of the lifting plate 205. An electric heating rod 207 is installed on the heat sealing knife 206 and inserted into it. A pointer 208 is fixed on the left side of the bracket 203. An angle scale line 102 is provided on the workbench 1. The pointer 208 points to the angle scale line 102. The tilt angle of the heat sealing knife 206 can be observed through the pointer 208 and the angle scale line 102.

[0021] The rotation adjustment mechanism 3 includes a drive motor 301, a pinion 302, and a gear 303. The drive motor 301 is fixed inside the workbench 1. The pinion 302 is fixed on the output shaft of the drive motor 301. A gear 303 meshes with the pinion 302 on one side. The gear 303 is fixed on the support shaft 201. The transmission ratio between the pinion 302 and the gear 303 is 3:1. In use, the drive motor 301 drives the pinion 302 and the gear 303 to rotate, and the gear 303 drives the support shaft 201 to rotate.

[0022] A PLC controller 4 is installed on the side of the workbench 1. The electric telescopic rod 204, the electric heating rod 207 and the drive motor 301 are electrically connected to the PLC controller 4 for control.

[0023] Working principle: In use, the sealing knife structure of this bag making machine first heats the heat sealing knife 206 to a high temperature through the electric heating rod 207. The bag is then passed under the heat sealing knife 206, and the electric telescopic rod 204 drives the heat sealing knife 206 to move downward. The heat sealing knife 206 presses onto the bag, and the contact point between the heat sealing knife 206 and the bag is softened and stuck together under the high temperature. Then, the heat sealing knife 206 is moved back to its original position, and the indentation on the bag gradually cools and solidifies, thus achieving a seal. In addition, the drive motor 301 drives the pinion 302 and the large gear 303 to rotate. The large gear 303 drives the support shaft 201 to rotate, and the support shaft 201 drives the support rod 202, bracket 203, electric telescopic rod 204, lifting plate 205, and heat sealing knife 206 to rotate. The tilt angle of the heat sealing knife 206 is observed through the pointer 208 and the angle scale line 102, thus achieving the oblique heat sealing of the heat sealing knife 206.

[0024] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sealing blade structure of a bag making machine, characterized by, The device includes a workbench (1), an adjustable sealing knife mechanism (2), and a rotary adjustment mechanism (3). The adjustable sealing knife mechanism (2) is rotatably mounted on the workbench (1), and the rotary adjustment mechanism (3) is fixedly mounted inside the workbench (1). The rotary adjustment mechanism (3) is connected to the adjustable sealing knife mechanism (2) and is used to drive the adjustable sealing knife mechanism (2) to rotate. The adjustable sealing knife mechanism (2) includes: a support shaft (201), a support rod (202), a bracket (203), an electric telescopic rod (204), a lifting plate (205), a heat sealing knife (206), an electric heating rod (207), and a pointer (208). The support shaft (201) is rotatably connected to the workbench (1), and the left and right sides of the support shaft (201) are connected to the workbench (1). A support rod (202) is fixed on each side. The support rod (202) passes through the workbench (1) and slides in contact with it. The upper end of the support rod (202) is fixed to the bracket (203). Two electric telescopic rods (204) are fixed on the bracket (203). The telescopic ends of the electric telescopic rods (204) are fixed to the lifting plate (205). The heat sealing knife (206) is fixed to the lower side of the lifting plate (205). An electric heating rod (207) is installed on the heat sealing knife (206) and inserted into it. A pointer (208) is fixed on the left side of the bracket (203). An angle scale line (102) is provided on the workbench (1). The pointer (208) points to the angle scale line (102).

2. The bag machine seal bar structure of claim 1 wherein, The rotation adjustment mechanism (3) includes a drive motor (301), a pinion (302) and a gear (303). The drive motor (301) is fixed inside the workbench (1). A pinion (302) is fixed on the output shaft of the drive motor (301). A gear (303) meshes with the pinion (302) on one side. The gear (303) is fixed on the support shaft (201).

3. The bag machine seal bar structure of claim 2 wherein, The transmission ratio of the pinion (302) and the gear (303) is 3:

1.

4. The bag machine seal bar structure of claim 1 wherein, The workbench (1) is provided with an arc-shaped slide groove (101) for the rotation of the support rod (202).

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