Cutter driving mechanism and plastic bag production hot cutting machine

Abstract

The utility model relates to the technical field of plastic bag production, in particular to a cutter driving mechanism and a plastic bag production hot cutting machine, which comprise a driving mechanism, the driving mechanism comprises fixing structures symmetrically arranged on two sides, each fixing structure comprises a fixing base, the upper end of each fixing base is fixedly connected with a limiting insertion rod, and the upper end of each limiting insertion rod is movably connected with a driving block. The utility model has the beneficial effects that the hot cutters are driven by the worm gear, the worm and the eccentric wheel, the structure is simpler, the transmission is more direct, the transmission efficiency is higher, and the transmission efficiency is higher. And through transmission of a mechanical structure, the occupied space is smaller, maintenance and replacement are easier when abrasion occurs, and operation is convenient and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag production, in particular to a cutter driving mechanism and a plastic bag production hot cutting machine. Background Art

[0002] A heat cutter is a mechanical device that uses concentrated heat energy to melt and separate materials. In the production process of plastic bags, heat cutters are often used to cut plastic bags. Plastic bags can be cut into bags quickly and stably by heat cutters. For the drive of the heat cutter, a cylinder or a hydraulic cylinder is generally used to drive the two sides of the heat cutter to move up and down synchronously. However, the use of cylinders and hydraulic cylinders requires the addition of corresponding air supply or liquid supply devices, which takes up a large space, is inconvenient to install, and subsequent inspection and maintenance are also cumbersome. Therefore, a drive structure with a simpler structure, smaller space occupation, and simpler and more direct operation is required. To this end, the utility model proposes a cutter drive mechanism and a plastic bag production heat cutter to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a cutter driving mechanism and a plastic bag production hot cutting machine to solve the problems raised in the above background technology.

[0004] To achieve the above purpose, the utility model provides the following technical solutions: a cutter drive mechanism, comprising

[0005] The driving mechanism comprises a fixed structure symmetrically arranged on both sides, the fixed structure comprises a fixed base, the upper end of the fixed base is fixedly connected to a limiting plug rod, the upper end of the limiting plug rod is movably connected to a driving block, a hot cutting knife group is connected between the driving blocks, a driving assembly is arranged on the fixed base outside the driving blocks on both sides, and a protective cover is provided on the outer side cover of the upper end of the driving assembly.

[0006] Preferably, two groups of symmetrical limit sockets are provided in the middle of the driving block from top to bottom, and a connecting block is protruding from the inner wall of the driving block, and the connecting block is connected and fixed to the hot cutting knife group. Connecting grooves are provided on both sides of the hot cutting knife group, and the connecting blocks are plugged into the connecting grooves and fixed in place by bolts. The driving block is movably plugged into the outside of the limit plug rod through the limit socket, and a driving rod is protruding from the lower end of the outer wall of the driving block, and the driving rod is connected to the driving assembly for transmission. A support spring is provided on the outer sleeve of the limit plug rod between the lower end of the driving block and the fixed base, and the upper and lower ends of the support spring are respectively supported between the driving block and the fixed base.

[0007] Preferably, the driving assembly includes a support plate fixedly connected to the upper end of the fixed base, a rotating shaft is rotatably connected inside the upper end of the support plate, a worm gear is fixedly connected to the middle outer side of the rotating shaft, the end of the rotating shaft close to the driving block passes through the corresponding side support plate and is fixedly connected to an eccentric turntable at the end, an eccentric guide groove is provided on the side of the eccentric turntable close to the driving block, the eccentric turntable is connected and driven by a driving rod protruding from the outer lower end of the driving block, and the driving rod is movably connected in the eccentric guide groove.

[0008] Preferably, the lower end of the worm wheel is transmission-connected with a worm, both ends of the worm are rotatably connected in a support seat, the support seat is fixedly connected to the upper end of the fixed base, and one end of the worm is transmission-connected to the transmission output end of the drive motor.

[0009] A plastic bag production hot cutting machine, in which the above-mentioned cutter driving mechanism is used.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model drives the hot cutting knife through the worm gear and the eccentric wheel, has a simpler structure and a more direct transmission. The transmission through the mechanical structure occupies less space, is easier to repair and replace in case of wear, and is convenient and quick to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the internal structure of the protective cover in the utility model;

[0014] Figure 3 This is a front structural schematic diagram of the drive assembly in the utility model;

[0015] Figure 4 It is a three-dimensional structural schematic diagram of the driving component in the utility model.

[0016] In the figure: 1 hot cutting knife group, 2 driving block, 3 limiting plug rod, 4 fixed base, 5 protective cover, 6 driving assembly, 7 connecting plug block, 8 driving rod, 9 supporting spring, 10 eccentric turntable, 11 rotating shaft, 12 supporting plate, 13 worm gear, 14 worm, 15 supporting seat, 16 eccentric guide groove. DETAILED DESCRIPTION

[0017] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0021] See also Figures 1 to 4 The utility model provides a technical solution: a cutter drive mechanism, comprising

[0022] The driving mechanism includes a fixed structure symmetrically arranged on both sides, the fixed structure includes a fixed base 4, the upper end of the fixed base 4 is fixedly connected to the limit plug rod 3, the upper end of the limit plug rod 3 is movably connected to the driving block 2, the driving blocks 2 are connected to the hot cutting knife group 1, and the fixed base 4 on the outside of the driving blocks 2 on both sides is provided with a driving component 6, and the upper outer side cover of the driving component 6 is provided with a protective cover 5;

[0023] Two groups of symmetrical limit plug holes are provided in the middle of the driving block 2 from top to bottom. A connecting plug block 7 is provided protruding from the inner wall of the driving block 2. The connecting plug block 7 is connected and fixed to the hot cutting knife group 1. Connecting grooves are provided on both sides of the hot cutting knife group 1. The connecting plug blocks 7 are plugged into the connecting grooves and are fixed in place by bolts. The driving block 2 is movably plugged into the outside of the limit plug rod 3 through the limit plug hole. A driving rod 8 is provided protruding from the lower end of the outer wall of the driving block 2. The driving rod 8 is connected and transmitted with the driving assembly 6. A supporting spring 9 is provided on the outer sleeve of the limit plug rod 3 between the lower end of the driving block 2 and the fixed base 4. The upper and lower ends of the supporting spring 9 are respectively supported between the driving block 2 and the fixed base 4. The driving block 2 can move up and down on the outside of the limit plug rod 3, so that the hot cutting knife group 1 can cut the plastic bags in strips. The supporting spring 9 can support the driving block 2, increase the buffering and shock absorbing performance, and can make the hot cutting knife group 1 bounce up quickly to avoid affecting the hot cutting work effect.

[0024] The driving assembly 6 includes a support plate 12 fixedly connected to the upper end of the fixed base 4, a rotating shaft 11 is rotatably connected inside the upper end of the support plate 12, a worm gear 13 is fixedly connected to the middle outer side of the rotating shaft 11, an end of the rotating shaft 11 close to the driving block 2 passes through the corresponding side support plate 12 and is fixedly connected to an eccentric rotating disk 10 at the end, an eccentric guide groove 16 is provided on the side of the eccentric rotating disk 10 close to the driving block 2, the eccentric rotating disk 10 is connected and driven by a driving rod 8 protruding from the lower end of the outer side of the driving block 2, and the driving rod 8 is movably connected in the eccentric guide groove 16;

[0025] The lower end of the worm wheel 13 is connected to a worm 14 in a transmission manner, and both ends of the worm 14 are rotatably connected to a support seat 15, and the support seat 15 is fixedly connected to the upper end of the fixed base 4. One end of the worm 14 is connected to the transmission output end of the drive motor, and the drive assembly 6 can be driven by a continuously variable drive motor. The speed of the drive motor can be adjusted according to actual work requirements, and the frequency of the up and down activities of the hot cutting knife group 1 can be adjusted. The structure is simple, and all structures can be replaced, and can be quickly and conveniently repaired and replaced when wear occurs;

[0026] A plastic bag production hot cutting machine, in which the above-mentioned cutter driving mechanism is used.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutter drive mechanism, characterized in that: include A driving mechanism, the driving mechanism comprising a fixed structure symmetrically arranged on both sides, the fixed structure comprising a fixed base (4), the upper end of the fixed base (4) is fixedly connected to a limit rod (3), the upper end of the limit rod (3) is movably connected to a driving block (2), the driving blocks (2) are connected to a hot cutting knife group (1), and a driving assembly (6) is arranged on the fixed base (4) outside the driving blocks (2) on both sides, and a protective cover (5) is arranged on the outer side of the upper end of the driving assembly (6).

2. A cutter drive mechanism according to claim 1, characterized in that: The middle of the driving block (2) is provided with two groups of symmetrical limit plug holes extending upward and downward. The driving block (2) is provided with a connecting plug block (7) protruding from the inner side wall. The connecting plug block (7) is connected and fixed to the hot cutting knife group (1). The hot cutting knife group (1) is provided with connecting grooves on both sides. The connecting plug block (7) is plugged into the connecting grooves and fixed in position by bolts. The driving block (2) is movably plugged into the outer side of the limit plug rod (3) through the limit plug hole. The driving block (2) is provided with a driving rod (8) protruding from the lower end of the outer side wall. The driving rod (8) is connected and driven with the driving assembly (6). A supporting spring (9) is provided on the outer sleeve of the limit plug rod (3) between the lower end of the driving block (2) and the fixed base (4). The upper and lower ends of the supporting spring (9) are respectively supported between the driving block (2) and the fixed base (4).

3. A cutter drive mechanism according to claim 1, characterized in that: The driving assembly (6) comprises a support plate (12) fixedly connected to the upper end of the fixed base (4); a rotating shaft (11) is rotatably connected inside the upper end of the support plate (12); a worm gear (13) is fixedly connected to the middle outer side of the rotating shaft (11); an end of the rotating shaft (11) close to the driving block (2) passes through the corresponding side support plate (12) and is fixedly connected to an eccentric rotating disk (10) at the end; an eccentric guide groove (16) is provided on the side of the eccentric rotating disk (10) close to the driving block (2); the eccentric rotating disk (10) is connected and driven by a driving rod (8) protruding from the lower end of the outer side of the driving block (2); and the driving rod (8) is movably connected in the eccentric guide groove (16).

4. A cutter drive mechanism according to claim 3, characterized in that: The lower end of the worm wheel (13) is drivingly connected to a worm (14), both ends of the worm (14) are rotatably connected in a support seat (15), the support seat (15) is fixedly connected to the upper end of the fixed base (4), and one end of the worm (14) is drivingly connected to the transmission output end of the drive motor.

5. A plastic bag production hot cutting machine, characterized by: The cutter drive mechanism described in any one of claims 1 to 4 is used.

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