Heat sealing and cutting mechanism of plastic film bag making machine

Abstract

The utility model relates to a heat sealing and cutting mechanism of a plastic film bag making machine, which comprises a sealing and cutting bedplate, a mounting frame, a telescopic cylinder, a heat sealing heating seat, a heat sealing cutter, a cutting component and a cooling frame, when the telescopic cylinder is started, the heat sealing heating seat, the heat sealing cutter and the cutting component can be driven to move downwards, and the sealing and cutting of a plastic film can be completed. When a telescopic air cylinder drives a heat-sealing heating base, a heat-sealing cutter and a cutting component to move upwards and a mini air cylinder is started at the same time, a cooling liquid box body and a scraping plate are close to the heat-sealing cutter, and low-temperature cooling liquid is stored in the cooling liquid box body, so that the overall temperature of the cooling liquid box body is low; and when the temperature of the plastic film colloid is reduced, the colloid layer can be solidified, and the heat-sealing cutter continues to move, the scraper can scrape the colloid on the surface of the heat-sealing cutter, so that the purpose of automatically cleaning the heat-sealing cutter is achieved, the cleaning effect is good, and the labor cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of bag making machines, in particular to a heat sealing and cutting mechanism of a plastic film bag making machine. Background Art

[0002] Plastic film bag making machine is a machine used to produce plastic bags, usually used to produce various types of plastic bags, such as food bags, shopping bags, packaging bags, etc. The working principle of the plastic film bag making machine is to first feed the plastic film into the machine through the feeding system, form the bottom of the bag through the heating and sealing system, and then cut it into separate bags through the cutting system. Finally, the collection and stacking system completes the sorting and stacking of the bags. The heat sealing and cutting mechanism includes: heat sealing knife, pressure regulating structure, temperature control structure and transmission structure, and the sealing and cutting work is completed through the mutual cooperation of the above structures.

[0003] When the heat sealing and cutting mechanism is used, the plastic film needs to be sealed first and then cut. The heat sealing and cutting mechanism of the plastic film bag making machine disclosed in patent number CN220095731U includes a top seat, a sealing and cutting knife is arranged below the top seat, and heating plates are installed on the outer walls of both sides of the sealing and cutting knife by bolts. A plurality of studs are fixed on the top of the sealing and cutting knife, and the studs are respectively connected with the top seat, and the outer walls of the studs are threadedly connected with nuts. There are two nuts on the studs, which are separated from the adjusting screws at both ends of the U-shaped seat by the rotation of the adjusting screw, so that the top seat and the auxiliary seat are separated from the limit connection, and the position between the top seat and the auxiliary seat is rotatable through the bearing and the rotating shaft. At this time, by pressing the handle, the top seat can drive the sealing and cutting knife to swing and flip through the rotation of the bearing and the rotating shaft, and the flipped sealing and cutting knife can clean the colloid residue.

[0004] However, in the above-mentioned documents, although the cutter can be cleaned by flipping it, the process of cleaning the cutter is mostly manual, which is inconvenient to automatically clean it. The manual cleaning operation is relatively cumbersome, time-consuming, and not very practical. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a heat-sealing and cutting mechanism of a plastic film bag making machine which can automatically clean the colloid residue on the surface of the heat-sealing knife and has simple cleaning operation, so as to solve the above problems.

[0006] The utility model discloses a heat-sealing and cutting mechanism for a plastic film bag making machine, comprising: a heat-sealing and cutting platen, a mounting frame being fixedly mounted on the upper end of the heat-sealing and cutting platen, and the mounting frame being in an inverted U-shaped structure; a telescopic cylinder, the telescopic cylinder being fixedly mounted on the inner side of the mounting frame, the lower end of the telescopic cylinder being fixedly connected to a heat-sealing heating seat, the lower end of the heat-sealing heating seat being provided with a heat-sealing knife and a cutting member, the heat-sealing knife and the cutting member being used for heat-sealing and cutting the plastic film respectively; a cooling frame, the cooling frame being mounted on the upper end of the heat-sealing and cutting platen, the The cooling frame includes a first groove cavity and a second groove cavity, which are sequentially opened on the surface of the cooling frame, a mini cylinder is fixedly installed on the inner wall of the first groove cavity, the other end of the mini cylinder is connected to the connecting cross plate, the two ends of the connecting cross plate are respectively connected to the connecting frame, the connecting frame is a side U-shaped structure, the two ends of the connecting frame are respectively connected to the coolant box and the scraper, the coolant box stores low-temperature coolant, when the mini cylinder is started, the coolant box and the scraper are close to the heat sealing knife, and can contact the surface of the heat sealing knife.

[0007] By adopting the above technical solution, when the telescopic cylinder is started, the heat sealing heating seat can be driven to move downward, and the heat sealing knife and the cutting component can also move downward. The heat sealing heating seat makes the surface of the heat sealing knife have a certain temperature, so the plastic film can be sealed. There is a certain distance between the heat sealing knife and the cutting component, so the sealed plastic film can be cut. When the telescopic cylinder drives the heat sealing heating seat, the heat sealing knife and the cutting component to move upward, and the mini cylinder is started at the same time, the coolant tank and the scraper are close to the heat sealing knife, and can contact the surface of the heat sealing knife, thereby reducing the temperature of the glue in the plastic film, the glue layer will solidify, and the scraper can be used to complete the cleaning of the glue on the surface of the heat sealing knife.

[0008] Furthermore, the coolant tank and the scraper are each provided with two groups, and the coolant tank has a large vertical cross-section.

[0009] By adopting the above technical solution, the side wall of the coolant box can fully contact the surface of the heat sealing knife, thereby increasing the contact time between the coolant box and the surface of the heat sealing knife.

[0010] Furthermore, an open groove is provided on the surface of the heat sealing cutting platen, and a motor is fixedly installed on the side wall of the heat sealing cutting platen. The output end of the motor is connected to a movable display board through an axle rod. When the motor is running, the movable display board can rotate inside the open groove.

[0011] By adopting the above technical solution, when the scraper scrapes off the glue on the surface of the heat sealing knife, the solidified glue layer will fall downwards. When the motor drives the shaft and the movable display plate to rotate, the glue layer will pass through the inclined movable display plate and finally be discharged from the open groove.

[0012] Furthermore, a transport roller component is installed on the upper end of the heat-sealing and cutting table.

[0013] By adopting the above technical solution, the transport roller components are distributed on the heat-sealing and cutting table, and can drive the plastic film to move.

[0014] Furthermore, a guide rod is installed on the upper end of the heat sealing heating seat, and the guide rod is movably inserted into the surface of the mounting frame.

[0015] By adopting the above technical solution, when the heat sealing heating seat moves, the guide rod can slide up and down on the mounting frame to maintain balance.

[0016] Furthermore, the cutting component includes a connecting frame, which is fixedly installed on one side of the heat sealing heating seat, an electric push rod is installed on the side wall of the connecting frame, a bottom groove is opened on the bottom wall of the connecting frame, one end of the electric push rod passes through the connecting frame and extends into the bottom groove, and is connected to the mounting block, the cutter is arranged below the connecting frame, a mounting plate is arranged at the upper end of the cutter, the mounting plate can be inserted into the mounting block, bolts are arranged on the surface of the mounting block, and holes are opened on the mounting plate and the surface of the mounting block.

[0017] By adopting the above technical solution, when the electric push rod is started, the mounting block and the cutter can be driven to move, and the distance between the cutter and the heat sealing knife can be adjusted.

[0018] By implementing the above scheme, the utility model has the following beneficial effects:

[0019] The utility model provides a heat sealing and cutting mechanism for a plastic film bag making machine. When the telescopic cylinder is started, the heat sealing heating seat, the heat sealing knife and the cutting component can be driven to move downward, so as to realize the sealing and cutting of the plastic film. When the presence of glue on the surface of the heat sealing knife is observed, the mini cylinder is started, the coolant box and the scraper are close to the heat sealing knife, and the coolant box stores coolant with low temperature, so that the overall temperature of the coolant box is low. When the coolant box contacts the surface of the heat sealing knife, the temperature of the glue in the plastic film is reduced, and the glue layer will solidify. When the heat sealing knife continues to move, the scraper can scrape the glue on the surface of the heat sealing knife, thereby achieving the purpose of automatically cleaning the heat sealing knife, with good cleaning effect and saving labor cost. The solidified glue layer will fall downward, and when the motor drives the shaft rod and the movable display board to rotate, the glue layer will be discharged from the opening groove through the inclined movable display board at last, so as to prevent the glue from being retained on the heat sealing and cutting table plate, and facilitate processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the heat-sealing cutting table of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the cooling frame of the utility model;

[0023] Figure 4 It is a bottom view schematic diagram of the structure of the cutting component of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the cutter and the mounting plate of the utility model;

[0025] Numbers in the figure: 1. Heat sealing cutting plate; 11. Opening groove; 12. Motor; 13. Movable display board; 2. Mounting frame; 3. Telescopic cylinder; 4. Heat sealing heating seat; 41. Guide rod; 5. Heat sealing knife; 6. Cutting component; 61. Connecting frame; 62. Electric push rod; 63. Bottom groove; 64. Mounting block; 65. Mounting sheet; 66. Cutter; 67. Bolt; 7. Cooling frame; 71. First groove cavity; 72. Second groove cavity; 73. Coolant box; 74. Connecting frame; 75. Scraper; 76. Connecting cross plate; 77. Mini cylinder; 8. Transport roller component. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0027] Embodiment 1

[0028] like Figures 1 to 5 As shown, a heat sealing and cutting mechanism of a plastic film bag making machine includes a heat sealing and cutting table 1, a mounting frame 2, a telescopic cylinder 3, a heat sealing heating seat 4, a heat sealing knife 5, a cutting component 6 and a cooling frame 7.

[0029] The mounting frame 2 is an inverted U-shaped structure, and the telescopic cylinder 3 is fixedly installed on the inner side of the mounting frame 2. The lower end of the telescopic cylinder 3 is fixedly connected to a heat sealing heating seat 4. The lower end of the heat sealing heating seat 4 is provided with a heat sealing knife 5 and a cutting member 6. The heat sealing knife 5 and the cutting member 6 are respectively used for heat sealing and cutting the plastic film.

[0030] The cooling frame 7 is installed at the upper end of the heat sealing cutting table 1, and the cooling frame 7 includes a first groove cavity 71 and a second groove cavity 72. The first groove cavity 71 and the second groove cavity 72 are sequentially opened on the surface of the cooling frame 7, and the first groove cavity 71 and the second groove cavity 72 are respectively opposite to the positions of the heat sealing knife 5 and the cutting member 6. A plurality of groups of mini cylinders 77 are fixedly installed on the inner wall of the first groove cavity 71, and the other end of the mini cylinder 77 is connected to the connecting cross plate 76. The two ends of the connecting cross plate 76 are respectively connected to the connecting frame 74, and the connecting frame 74 is a side U-shaped structure. The two ends of the connecting frame 74 are respectively connected to the cooling liquid box 73 and the scraper 75. The cooling liquid box 73 stores low-temperature cooling liquid, so that the overall temperature of the cooling liquid box 73 is low. When the mini cylinder 77 is started, the cooling liquid box 73 and the scraper 75 are close to the heat sealing knife 5 and can contact the surface of the heat sealing knife 5.

[0031] When the telescopic cylinder 3 is started, the heat sealing heating seat 4 can be driven to move downward, and the heat sealing knife 5 and the cutting member 6 can also move downward. The heat sealing heating seat 4 makes the surface of the heat sealing knife 5 have a certain temperature, so that the plastic film can be sealed and cut. When the telescopic cylinder 3 drives the heat sealing heating seat 4, the heat sealing knife 5 and the cutting member 6 to move upward, when the mini cylinder 77 is started, the coolant tank 73 and the scraper 75 are close to the heat sealing knife 5, and can contact the surface of the heat sealing knife 5, thereby reducing the temperature of the glue in the plastic film, the glue layer will solidify, and the scraper 75 is used to complete the cleaning of the glue on the surface of the heat sealing knife 5.

[0032] The coolant tank 73 and the scraper 75 are each provided with two groups. The length of the heat sealing knife 5 is consistent with the size of the coolant tank 73 and the scraper 75. The vertical cross-section of the coolant tank 73 is large, and the side wall of the coolant tank 73 can fully contact the surface of the heat sealing knife 5, thereby increasing the contact time between the coolant tank 73 and the surface of the heat sealing knife 5.

[0033] An open groove 11 is provided on the surface of the heat sealing cutting platen 1, and a motor 12 is fixedly installed on the side wall of the heat sealing cutting platen 1. The output end of the motor 12 is connected to a movable display plate 13 through a shaft. When the motor 12 is operating, the movable display plate 13 can rotate inside the open groove 11, and the angle of the movable display plate 13 changes. After the scraper 75 scrapes the glue on the surface of the heat sealing knife 5, the solidified glue layer will fall downward due to the inclined bottom wall of the first groove cavity 71. When the motor 12 drives the shaft and the movable display plate 13 to rotate, the glue layer will pass through the inclined movable display plate 13 and finally be discharged from the open groove 11.

[0034] A transport roller component 8 is installed on the upper end of the heat-sealing and cutting table 1. The transport roller component 8 is distributed on the heat-sealing and cutting table 1 and can drive the plastic film to move.

[0035] A guide rod 41 is installed at the upper end of the heat sealing heating seat 4. The guide rod 41 is movably inserted into the surface of the mounting frame 2. When the heat sealing heating seat 4 moves, the guide rod 41 can slide up and down on the mounting frame 2 to maintain balance.

[0036] The cutting member 6 includes a connecting frame 61, which is fixedly mounted on one side of the heat-sealing heating seat 4. An electric push rod 62 is mounted on the side wall of the connecting frame 61. A bottom groove 63 is provided on the bottom wall of the connecting frame 61. One end of the electric push rod 62 passes through the connecting frame 61 and extends into the bottom groove 63 and is connected to the mounting block 64. A cutter 66 is arranged below the connecting frame 61. A mounting piece 65 is arranged on the upper end of the cutter 66. The mounting piece 65 can be inserted into the mounting block 64. Bolts 67 are arranged on the surface of the mounting block 64. Holes are provided on the surfaces of the mounting piece 65 and the mounting block 64. The mounting piece 65 and the mounting block 64 are fixed by bolts 67, and the position of the cutter 66 can be fixed. The installation is relatively convenient, and it is convenient to use the cutter 66 to complete the segmentation of the plastic film. At the same time, when the electric push rod 62 is started, the mounting block 64 and the cutter 66 can be driven to move, and the distance between the cutter 66 and the heat sealing knife 5 can be adjusted to prevent the heat sealing knife 5 from causing thermal deformation of the position to be cut when heat-sealing the plastic film, thereby affecting the cutting quality.

[0037] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heat sealing and cutting mechanism for a plastic film bag making machine, characterized in that: include: A heat-sealing and cutting table (1), wherein a mounting frame (2) is fixedly mounted on the upper end of the heat-sealing and cutting table (1), and the mounting frame (2) is an inverted U-shaped structure; A telescopic cylinder (3), the telescopic cylinder (3) being fixedly mounted on the inner side of the mounting frame (2), the lower end of the telescopic cylinder (3) being fixedly connected to a heat sealing heating seat (4), the lower end of the heat sealing heating seat (4) being provided with a heat sealing knife (5) and a cutting member (6); A cooling frame (7), the cooling frame (7) is installed at the upper end of the heat sealing cutting table (1), the cooling frame (7) comprises a first groove cavity (71) and a second groove cavity (72), the first groove cavity (71) and the second groove cavity (72) are sequentially opened on the surface of the cooling frame (7), a mini cylinder (77) is fixedly installed on the inner wall of the first groove cavity (71), the other end of the mini cylinder (77) is connected to a connecting cross plate (76), the two ends of the connecting cross plate (76) are respectively connected to a connecting frame (74), the connecting frame (74) is a side U-shaped structure, the two ends of the connecting frame (74) are respectively connected to a cooling liquid box (73) and a scraper (75), when the mini cylinder (77) is started, the cooling liquid box (73) and the scraper (75) are close to the heat sealing knife (5).

2. The heat sealing and cutting mechanism of a plastic film bag making machine according to claim 1, characterized in that: The cooling liquid box (73) and the scraper (75) are each provided in two groups, and the cooling liquid box (73) has a large vertical cross section.

3. The heat sealing and cutting mechanism of a plastic film bag making machine according to claim 1, characterized in that: An open groove (11) is provided on the surface of the heat sealing and cutting table (1), and a motor (12) is fixedly installed on the side wall of the heat sealing and cutting table (1). The output end of the motor (12) is connected to a movable display plate (13) via a shaft rod. When the motor (12) is in operation, the movable display plate (13) can rotate inside the open groove (11).

4. The heat sealing and cutting mechanism of a plastic film bag making machine according to claim 2, characterized in that: A transport roller component (8) is installed on the upper end of the heat-sealing and cutting table (1).

5. The heat sealing and cutting mechanism of a plastic film bag making machine according to claim 1, characterized in that: A guide rod (41) is installed at the upper end of the heat-sealing heating seat (4), and the guide rod (41) is movably inserted into the surface of the mounting frame (2).

6. The heat sealing and cutting mechanism of a plastic film bag making machine according to claim 1, characterized in that: The cutting component (6) comprises a connecting frame (61), the connecting frame (61) is fixedly mounted on one side of the heat-sealing heating seat (4), an electric push rod (62) is mounted on the side wall of the connecting frame (61), a bottom groove (63) is provided on the bottom wall of the connecting frame (61), one end of the electric push rod (62) is connected to a mounting block (64), a cutter (66) is arranged below the connecting frame (61), a mounting plate (65) is arranged at the upper end of the cutter (66), and a bolt (67) is arranged on the surface of the mounting block (64).

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