Upper opening heat sealing machine for polymer woven bag processing

Abstract

The upper opening heat sealing machine comprises a base frame and an air cylinder, the middle of one side of the base frame is fixedly connected with the air cylinder, the output end of the air cylinder is fixedly connected with a connecting frame, a knife rest is arranged under the connecting frame, and connecting mechanisms are symmetrically arranged at the top end of the knife rest. The knife rest is connected with the bottom end of the connecting frame through the two connecting mechanisms, a heat sealing knife is installed at the bottom end of the knife rest, during heat sealing, when the heat sealing knife presses an opening of a woven bag, the lower barrel body can retract to a certain degree along the upper barrel body, the pressing force is improved, meanwhile, the phenomenon that the heat sealing position is fused due to the fact that the heat sealing knife moves downwards excessively is avoided, and the service life of the woven bag is prolonged. The heat sealing quality is improved; and after heat sealing is completed, the air cylinder retracts and resets, the supporting ring drags the stable flange to move upwards during resetting, stability is improved, and the situation that the bottom end of the heat sealing cutter is unstable due to instability of a spring, and the woven bag is damaged due to mistaken touch is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat sealing machines, and in particular relates to an upper heat sealing machine for processing polymer woven bags. Background Art

[0002] Packaging bags refer to bags used to package various items, which make it easy to transport and store goods during production and circulation. They are widely used in daily life and industrial production. Plastic packaging bags include plastic woven bags and plastic film bags. The former has the characteristics of light weight, high strength, and corrosion resistance. After adding plastic film lining, it can be moisture-proof and humidity-proof. Packaging bag heat sealing machines must be used in the production and processing of packaging bags. Packaging bag heat sealing machines mainly realize the sealing process of packaging.

[0003] The existing Chinese patent with publication number CN111572102A specifically discloses a heat sealing machine for producing packaging bags, including a fixed frame, characterized in that: a cylinder mounting frame is arranged in the middle of the fixed frame, and linear guide rails are symmetrically arranged on both sides, a power cylinder is arranged on the cylinder mounting frame, a gas rod on the power cylinder is connected to a first tool holder, and the power cylinder drives the first tool holder to perform lifting and lowering movements on the linear guide rail, a first tool body is arranged on the first tool holder, a second tool holder is arranged directly below the first tool holder, and a second tool body matching the first tool body is arranged on the second tool holder.

[0004] Although the above-mentioned heat sealing machine can quickly heat seal the mouth of the packaging bag, it mainly relies on the precision of the cylinder itself for heat sealing. The packaging bags are generally thin, and it is easy to have problems such as incomplete heat sealing or excessive heat sealing resulting in melting of the heat seal. Moreover, it cannot adapt to woven packaging bags of different thickness specifications during use, and its practicality is insufficient. Utility Model Content

[0005] The utility model aims to provide a top heat sealing machine for processing polymer woven bags to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a top heat sealing machine for processing polymer woven bags, comprising a base frame and a cylinder, a cylinder is fixedly connected to the middle of one side of the base frame, a connecting frame is fixedly connected to the output end of the cylinder, a tool holder is arranged directly below the connecting frame, a connecting mechanism is symmetrically arranged at the top of the tool holder, the tool holder is connected to the bottom end of the connecting frame through two connecting mechanisms, a heat sealing knife is installed at the bottom end of the tool holder, a heat sealing base is arranged directly below the heat sealing knife, an adjusting and positioning mechanism is symmetrically arranged at the top of the tool holder, two connecting mechanisms are arranged between the two adjusting and positioning mechanisms, and the tops of the two adjusting and positioning mechanisms are movably connected to the connecting frame.

[0007] Preferably, a sliding rod is symmetrically arranged on one side of the base frame, and the two sliding rods respectively pass through the two ends of the connecting frame, and the connecting frame is slidably connected to the sliding rod.

[0008] Preferably, the connecting mechanism includes an upper cylinder and a lower cylinder, the upper cylinder is movably connected to the top of the lower cylinder, the top of the upper cylinder is fixedly connected to the bottom end of the connecting frame, the bottom end of the lower cylinder is fixedly connected to the top of the tool holder, and a spring is provided inside the lower cylinder, and the two ends of the spring are respectively fixedly connected to the bottom end of the inner wall of the lower cylinder and the top end of the inner wall of the upper cylinder.

[0009] Preferably, a support ring is fixedly connected to the bottom end of the inner wall of the upper cylinder, the inner diameter of the support ring is equal to the outer diameter of the lower cylinder, and a stabilizing flange is integrally connected to the top of the side wall of the lower cylinder, the outer diameter of the stabilizing flange is equal to the inner diameter of the upper cylinder.

[0010] Preferably, the adjustment and positioning mechanism includes an insertion rod, the bottom end of the insertion rod is fixedly connected to the top end of the tool holder, the top end of the insertion rod passes through a connecting frame, and the connecting frame is movably connected to the insertion rod, a threaded portion is provided on the top of the side wall of the insertion rod, a nut is provided in the middle of the threaded portion, and there are two nuts, which are distributed in an upper and lower fit.

[0011] Preferably, a strip-shaped groove is provided on one side of the threaded portion, and scale lines are provided on the surface of the strip-shaped groove.

[0012] Preferably, the cylinder is electrically connected to an external power source via an external power switch.

[0013] Compared with the prior art, the utility model has the following beneficial effects: when heat sealing is performed, when the heat sealing knife is pressed to the opening of the woven bag, the lower cylinder can retract along the upper cylinder to a certain extent, thereby increasing the pressing force and preventing the heat sealing knife from moving downward excessively and causing the heat sealing portion to melt, thereby improving the heat sealing quality; after the heat sealing is completed, the cylinder retracts and resets, and during the reset, the support ring drags the stabilizing flange upward to improve stability and avoid the instability of the bottom of the heat sealing knife due to the instability of the spring, which may cause accidental contact with the woven bag and damage the woven bag; before use, the initial position of the heat sealing knife can be adjusted according to the thickness of the woven bag, and woven bags of different thicknesses can be heat-sealed and sealed, thereby improving the practicality of the heat sealing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a front view of the utility model;

[0016] Figure 3 It is a structural schematic diagram of part A of the utility model;

[0017] Figure 4 It is a top view of the utility model;

[0018] Figure 5 It is a cross-sectional view of the AA surface of the utility model;

[0019] Figure 6 It is a structural schematic diagram of part B of the utility model.

[0020] In the figure: 1. base frame; 2. cylinder; 3. connecting frame; 4. knife holder; 5. connecting mechanism; 51. upper cylinder; 52. lower cylinder; 53. spring; 54. support ring; 55. stabilizing flange; 6. heat sealing knife; 7. heat sealing base; 8. adjustment and positioning mechanism; 81. insertion rod; 82. threaded part; 83. nut; 84. strip groove; 9. slide rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] See also Figure 1-Figure 6 The utility model provides the following technical solutions: a top heat sealing machine for processing polymer woven bags, comprising a base frame 1 and a cylinder 2, the cylinder 2 is fixedly connected to the middle of one side of the base frame 1, the output end of the cylinder 2 is fixedly connected to a connecting frame 3, a tool holder 4 is arranged directly below the connecting frame 3, a connecting mechanism 5 is symmetrically arranged at the top of the tool holder 4, the tool holder 4 is connected to the bottom end of the connecting frame 3 through two connecting mechanisms 5, a heat sealing knife 6 is installed at the bottom end of the tool holder 4, a heat sealing base 7 is arranged directly below the heat sealing knife 6, an adjusting and positioning mechanism 8 is symmetrically arranged at the top of the tool holder 4, the two connecting mechanisms 5 are arranged between the two adjusting and positioning mechanisms 8, and the tops of the two adjusting and positioning mechanisms 8 are movably connected to the connecting frame 3.

[0023] Preferably, a slide bar 9 is symmetrically provided on one side of the base frame 1, and two slide bars 9 respectively pass through the two ends of the connecting frame 3, and the connecting frame 3 is slidably connected to the slide bar 9, so as to improve the stability of the connecting frame 3 when it moves up and down.

[0024] Preferably, the connecting mechanism 5 includes an upper cylinder 51 and a lower cylinder 52, the upper cylinder 51 is movably connected to the top of the lower cylinder 52, the top of the upper cylinder 51 is fixedly connected to the bottom end of the connecting frame 3, the bottom end of the lower cylinder 52 is fixedly connected to the top of the knife holder 4, and a spring 53 is provided inside the lower cylinder 52, and the two ends of the spring 53 are respectively fixedly connected to the bottom end of the inner wall of the lower cylinder 52 and the top end of the inner wall of the upper cylinder 51. When heat sealing is performed, when the heat sealing knife 6 is pressed to the opening of the woven bag, the lower cylinder 52 can retract along the upper cylinder 51 to a certain extent, thereby increasing the pressing force and avoiding the heat sealing knife 6 from moving downward too much to cause the heat sealing point to melt, thereby improving the heat sealing quality.

[0025] Preferably, a support ring 54 is fixedly connected to the bottom end of the inner wall of the upper cylinder 51, and the inner diameter of the support ring 54 is equal to the outer diameter of the lower cylinder 52. A stabilizing flange 55 is integrally connected to the top of the side wall of the lower cylinder 52, and the outer diameter of the stabilizing flange 55 is equal to the inner diameter of the upper cylinder 51. After the heat sealing is completed, the knife holder 4 is lifted together with the heat sealing knife 6 to reset. During the reset, the support ring 54 drags the stabilizing flange 55 to move upward to improve stability and avoid the bottom end of the heat sealing knife 6 being unstable and accidentally touching the woven bag, causing damage to the woven bag.

[0026] Preferably, the adjustment and positioning mechanism 8 includes an insertion rod 81, the bottom end of the insertion rod 81 is fixedly connected to the top end of the tool holder 4, the top end of the insertion rod 81 passes through the connecting frame 3, and the connecting frame 3 is movably connected to the insertion rod 81, and a threaded portion 82 is provided on the top of the side wall of the insertion rod 81, and a nut 83 is provided in the middle of the threaded portion 82. There are two nuts 83, and the two nuts 83 are distributed in an upper and lower fit. When adjusting the initial position of the heat sealing knife 6, the heat sealing knife 6 is pushed upward to compress the spring 53, and then the position of the heat sealing knife 6 is fixed by screwing the nut 83 downward. The two nuts 83 can form a self-locking function to improve the stability of the heat sealing knife 6 during subsequent use.

[0027] Preferably, a strip groove 84 is provided on one side of the threaded portion 82 , and scale lines are provided on the surface of the strip groove 84 to facilitate accurate adjustment of the position of the heat sealing knife 6 .

[0028] Preferably, the cylinder 2 is electrically connected to an external power source through an external power switch, and the cylinder 2 is controlled to move telescopically through the external power switch, thereby driving the heat sealing knife 6 to move up and down to heat-seal the opening of the woven bag.

[0029] The working principle and use process of the utility model: After the utility model is installed, first check the installation fixation and safety protection of the utility model, and then it can be used. When in use, the cylinder 2 is controlled to move telescopically, thereby driving the heat sealing knife 6 to move up and down to heat-seal the opening of the woven bag. When heat-sealing, when the heat sealing knife 6 is pressed to the opening of the woven bag, the lower cylinder 52 can be retracted along the upper cylinder 51 to a certain extent, while increasing the pressing force, avoiding the excessive downward movement of the heat sealing knife 6 to cause the heat sealing part to melt, thereby improving the heat sealing quality. After the heat sealing is completed, the cylinder 2 is retracted, and the knife holder 4 is pulled up and reset together with the heat sealing knife 6. The support ring is used for resetting. 54 drags the stabilizing flange 55 to move upward to improve stability and avoid the instability of the bottom end of the heat sealing knife 6 due to the instability of the spring 53, which may cause damage to the woven bag by accidentally touching the woven bag. Before use, the initial position of the heat sealing knife 6 is adjusted according to the thickness of the woven bag so that the bottom end of the heat sealing knife 6 can press the opening of the woven bag after the cylinder 2 is fully extended. When adjusting the position of the heat sealing knife 6, push the knife holder 4 upward to compress the spring 53, and then fix the position of the knife holder 4 by screwing the nut 83 downward. The two nuts 83 can form a self-locking function to improve the stability of the heat sealing knife 6 during subsequent use. The surface of the strip groove 84 is provided with scale lines to facilitate accurate adjustment of the position of the heat sealing knife 6.

[0030] Although 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 heat sealing machine for polymer woven bags, comprising a base frame (1) and a cylinder (2), characterized in that: A cylinder (2) is fixedly connected to the middle of one side of the base frame (1); a connecting frame (3) is fixedly connected to the output end of the cylinder (2); a tool holder (4) is arranged directly below the connecting frame (3); a connecting mechanism (5) is symmetrically arranged at the top of the tool holder (4); the tool holder (4) is connected to the bottom end of the connecting frame (3) through two connecting mechanisms (5); a heat sealing knife (6) is installed at the bottom end of the tool holder (4); a heat sealing base (7) is arranged directly below the heat sealing knife (6); an adjusting and positioning mechanism (8) is symmetrically arranged at the top of the tool holder (4); the two connecting mechanisms (5) are arranged between the two adjusting and positioning mechanisms (8); and the tops of the two adjusting and positioning mechanisms (8) are movably connected to the connecting frame (3).

2. The upper heat sealing machine for polymer woven bag processing according to claim 1, characterized in that: A sliding rod (9) is symmetrically arranged on one side of the base frame (1), and the two sliding rods (9) respectively penetrate the two ends of the connecting frame (3), and the connecting frame (3) is slidably connected to the sliding rod (9).

3. The upper heat sealing machine for polymer woven bag processing according to claim 1, characterized in that: The connecting mechanism (5) comprises an upper cylinder (51) and a lower cylinder (52); the upper cylinder (51) is movably connected to the top of the lower cylinder (52); the top end of the upper cylinder (51) is fixedly connected to the bottom end of the connecting frame (3); the bottom end of the lower cylinder (52) is fixedly connected to the top end of the tool holder (4); a spring (53) is arranged inside the lower cylinder (52); two ends of the spring (53) are respectively fixedly connected to the bottom end of the inner wall of the lower cylinder (52) and the top end of the inner wall of the upper cylinder (51).

4. The upper heat sealing machine for polymer woven bag processing according to claim 3, characterized in that: A support ring (54) is fixedly connected to the bottom end of the inner wall of the upper cylinder (51), and the inner diameter of the support ring (54) is equal to the outer diameter of the lower cylinder (52). A stabilizing flange (55) is integrally connected to the top of the side wall of the lower cylinder (52), and the outer diameter of the stabilizing flange (55) is equal to the inner diameter of the upper cylinder (51).

5. The upper heat sealing machine for polymer woven bag processing according to claim 1, characterized in that: The adjusting and positioning mechanism (8) comprises an insert rod (81), the bottom end of the insert rod (81) is fixedly connected to the top end of the tool holder (4), the top end of the insert rod (81) passes through the connecting frame (3), and the connecting frame (3) is movably connected to the insert rod (81), the top of the side wall of the insert rod (81) is provided with a threaded portion (82), the middle part of the threaded portion (82) is provided with a nut (83), and there are two nuts (83), and the two nuts (83) are arranged in a close relationship with each other up and down.

6. The upper heat sealing machine for polymer woven bag processing according to claim 5, characterized in that: A strip-shaped groove (84) is provided on one side of the threaded portion (82), and a scale line is provided on the surface of the strip-shaped groove (84).

7. The upper heat sealing machine for polymer woven bag processing according to claim 1, characterized in that: The cylinder (2) is electrically connected to an external power source via an external power switch.

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