Heat sealing cutter mechanism of film covering packaging machine

Abstract

The utility model discloses a heat sealing cutter mechanism of a film covering packaging machine, which comprises a machine frame, a base arranged on the machine frame, a heat cutter arranged above the base and a lifting assembly connected with the heat cutter and driving the heat cutter to reciprocate towards the base, and a heat cutting area for a plastic film to penetrate through is formed between the heat cutter and the base. A collecting cavity is formed in the base and located below the hot cutting area, the collecting cavity is provided with a sinking opening and communicates with the hot cutting area, rotating shafts are symmetrically arranged in the collecting cavity in the length direction of the hot cutter, each rotating shaft is rotationally provided with a rotating block, and a cleaning assembly is arranged at the end, facing the hot cutting area, of each rotating block. A cleaning gap allowing the hot cutter to be inserted is formed between the two rotating blocks, the rotating blocks are provided with linkage mechanisms driving the cleaning assemblies to act towards the hot cutter, the hot sealing cutter mechanism of the film covering packaging machine can clean adhesive materials adhering to the hot cutter, and the production quality and the production efficiency of products are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat-sealing and cutting knife mechanisms, and particularly relates to a heat-sealing and cutting knife mechanism of a film laminating packaging machine. Background Art

[0002] At present, with the rapid development of the packaging industry, as an important packaging device, the film laminating packaging machine is widely used in many fields such as food, medicine, daily chemicals, etc. The film laminating packaging machine wraps products with a heat-shrinkable film and cuts them through a hot cutting knife mechanism to achieve the sealing and aesthetics of the products.

[0003] The existing film laminating packaging machine includes a heat-sealing and cutting knife mechanism. The heat-sealing and cutting knife mechanism includes a frame, a base arranged on the frame, a lifting assembly arranged on the frame and reciprocating vertically towards the base, and a hot cutting knife arranged on a driving assembly. A hot cutting area for a bag to pass through is formed between the hot cutting knife and the base.

[0004] The heat-sealing and cutting knife mechanism of the above-mentioned film laminating packaging machine has the following problems. When the hot cutting knife contacts the plastic film, since the melted plastic film material has a melting and sticking property, the melted plastic film material will stick to the hot cutting knife, and fine particles in the working environment adhere to the hot cutting knife and are difficult to clean after being heated and caked. If the sticky material adhered to the cutting knife is not cleaned for a long time, it will cause sticking between the cutting knife and the object to be cut, which will affect the flatness of the bag incision, and then lead to unqualified product quality and reduced production efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to provide a heat-sealing and cutting knife mechanism of a film laminating packaging machine. The heat-sealing and cutting knife mechanism of the film laminating packaging machine can clean the sticky material adhered to the hot cutting knife, greatly improving the production quality and production efficiency of products.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A heat-sealing and cutting knife mechanism of a film laminating packaging machine, including a frame, a base arranged on the frame, a hot cutting knife arranged above the base, and a lifting assembly connecting the hot cutting knife and driving the hot cutting knife to reciprocate towards the base. A hot cutting area for a plastic film to pass through is formed between the hot cutting knife and the base. It is characterized in that: a collection cavity is arranged below the hot cutting area of the base. The collection cavity has a sinking opening and is communicated with the hot cutting area. Rotating shafts are symmetrically arranged along the length direction of the hot cutting knife in the collection cavity. Each rotating shaft is rotatably provided with a rotating block. A cleaning assembly is arranged at one end of the rotating block facing the hot cutting area. A cleaning gap for the hot cutting knife to insert is formed between the two rotating blocks. The rotating block is provided with a linkage mechanism for driving the cleaning assembly to act towards the hot cutting knife.

[0007] By adopting the above technical solution, the lifting component drives the hot cutting knife to move towards the cleaning gap, and the linkage mechanism controls the cleaning component to move towards the hot cutting knife. The cleaning component can clean the adhesive material adhered to the hot cutting knife, effectively cleaning the hot cutting knife, thereby greatly improving the flatness of the plastic film cut, and further improving the production quality and production efficiency of the product.

[0008] It is further set that: on one side of the rotating block of the cleaning component facing the cleaning gap, a sliding groove is opened. A bearing platform is slidably arranged in the sliding groove. A distance compensation spring is arranged between the bearing platform and the sliding groove. And on the side of the bearing platform facing the cleaning gap, a scraping blade and a flexible cleaning ball are arranged.

[0009] By adopting the above technical solution, through the setting of the scraping blade, the relatively large adhesive material adhered to the hot cutting knife can be scraped off. Through the setting of the flexible cleaning ball, the fine adhesive material can be wiped multiple times. The double cleaning of the scraping blade and the flexible cleaning ball can more effectively clean the adhesive material on the hot cutting knife, thereby more effectively improving the production quality and production efficiency of the product. Through the setting of the distance compensation spring, the contact time of the scraping blade and the flexible cleaning ball with the hot cutting knife can be extended, enabling the scraping blade to adapt to the side shape of the hot cutting knife, cleaning the hot cutting knife more comprehensively, and effectively avoiding the hard contact of the scraping blade with the hot cutting knife, thereby effectively avoiding scratching and abrasion of the hot cutting knife by the scraping blade, and further improving the production quality of the hot cutting knife for plastic film production and the service life of the hot cutting knife.

[0010] It is further set that: the linkage mechanism includes a push block that moves with the hot cutting knife and a pushing part at the other end of the rotating block facing the hot cutting area. The push block extends to a position near the sinking port below the hot cutting knife, and the pushing part is located on the movement path of the push block.

[0011] By adopting the above technical solution, the push block that moves with the hot cutting knife pushes the pushing part to make the rotating block rotate, without the need to rely on other power sources, reducing the complexity and weight of the equipment, and facilitating installation, maintenance and transportation.

[0012] It is further set that: a reset spring is connected between the two pushing parts, and the reset spring resets the pushing part to the movement path of the push block.

[0013] By adopting the above technical solution, through the setting of the reset spring, when the hot cutting knife leaves the cleaning gap, the reset spring pulls the two pushing parts to move towards each other, so that both the scraping blade and the flexible cleaning ball are separated from the hot cutting knife, facilitating the control of the next cleaning state.

[0014] Further configured as: including a pair of sealed doors slidably disposed in the collection chamber and located between the sinking port and the rotating block, the pair of sealed doors are symmetrically arranged along the reverse length direction of the hot cutting knife and move towards or away from each other, and a symmetrical spring for driving the two sealed doors to move towards each other to isolate the collection chamber from the outside is provided between each sealed door and the collection chamber. A linkage inclined surface is formed between the two sealed doors. When the pushing block moves, the pushing block pushes the linkage inclined surface to drive the two sealed doors to move away from each other.

[0015] By adopting the above technical solution, through the setting of the sealed doors, the opening and closing of the sealed doors can be realized, enabling the hot cutting knife to enter the collection chamber; the collection chamber can effectively isolate the outside world, effectively reducing the peculiar smell emitted by the sticky materials inhaled by the operator and being beneficial to the physical and mental health of people.

[0016] Further configured as: the collection chamber is provided with a cleaning port communicating the collection chamber with the outside, and a collection trough with an upward opening and capable of entering and exiting the cleaning port is provided below the cleaning component in the collection chamber.

[0017] By adopting the above technical solution, the scraped sticky materials fall into the collection chamber under their own gravity, and then the sticky materials falling into the collection trough are evacuated from the cleaning port to the outside for subsequent processing through the collection trough. Description of the Drawings

[0018] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0019] Figure 2 State diagram when the hot cutting knife of the embodiment is away from the cleaning gap;

[0020] Figure 3 State diagram when the hot cutting knife of the embodiment is located at the cleaning gap;

[0021] Figure 4 Enlarged schematic diagram of the cleaning component of the embodiment;

[0022] Figure 5 Position schematic diagram of the pushing block of the embodiment;

[0023] In the figure: 1, frame; 11, base; 13, hot cutting knife; 14, lifting component; 15, hot cutting area; 111, collection chamber; 112, sinking port; 113, rotating shaft; 114, rotating block; 115, cleaning gap; 21, sliding groove; 22, bearing platform; 23, distance compensation spring; 24, scraping blade; 25, flexible cleaning ball; 3, pushing block; 31, pushing part; 4, return spring; 51, sealed door; 52, symmetrical spring; 511, linkage inclined surface; 61, cleaning port; 62, collection trough;. Detailed Description of the Invention

[0024] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] Referring to Figures 1 to 5 , a heat-sealing and cutting knife mechanism of a film laminating packaging machine, comprising a frame: 1, a base 11 fixedly arranged on the frame 1, a hot cutting knife 13 arranged above the base 11, and a lifting assembly 14 connected to the hot cutting knife 13 and driving the hot cutting knife 13 to reciprocate towards the base 11. The lifting assembly 14 is specifically three telescopic cylinders. A hot cutting area 15 for the plastic film to pass through is formed between the hot cutting knife 13 and the base 11. A collection cavity 111 is arranged below the hot cutting area 15 of the base 11. The collection cavity 111 has a sinking opening 112 and is communicated with the hot cutting area 15. Rotating shafts 113 are symmetrically arranged along the length direction of the hot cutting knife 13 in the collection cavity 111. Both ends of each rotating shaft 113 are fixedly connected to the inner wall of the collection cavity 111. A rotating block 114 is rotatably arranged on each rotating shaft 113. A cleaning assembly is arranged at one end of the rotating block 114 facing the hot cutting area 15. A cleaning gap 115 for the hot cutting knife 13 to insert is formed between the two rotating blocks 114. The rotating block 114 is provided with a linkage mechanism for driving the cleaning assembly to act towards the hot cutting knife 13. The cleaning assembly includes a sliding groove 21 formed on one side of the rotating block 114 facing the cleaning gap 115, a carrier table 22 slidably arranged in the sliding groove 21, a distance compensation spring 23 arranged between the carrier table 22 and the sliding groove 21, and a scraping blade 24 and a flexible cleaning ball 25 fixedly arranged on one side of the carrier table 22 facing the cleaning gap 115. The flexible cleaning ball 25 is located above the scraping blade 24. The linkage mechanism includes a push block 3 fixedly arranged on the hot cutting knife 13 and moving with the hot cutting knife 13, and a pushing part 31 located at the other end of the rotating block 114 facing the hot cutting area 15. The push block 3 extends to a position below the hot cutting knife 13 near the sinking opening 112. The push block 3 is arranged at both ends of the hot cutting knife 13 in the length direction. The pushing part 31 is located on the movement path of the push block 3. A return spring 4 is fixedly connected between the two pushing parts 31. The return spring 4 returns the pushing part 31 to the movement path of the push block 3.

[0026] It includes a pair of sealed doors 51 slidably arranged in the collection cavity 111 and located between the sinking opening 112 and the rotating block 114. The pair of sealed doors 51 are symmetrically arranged along the reverse length direction of the hot cutting knife 13 and move towards or away from each other. A symmetrical spring 52 for driving the two sealed doors 51 to move towards each other to isolate the collection cavity 111 from the outside is arranged between each sealed door 51 and the collection cavity 111. A linkage inclined surface 511 is formed between the two sealed doors 51. When the push block 3 moves, the push block 3 pushes the linkage inclined surface 511 to drive the two sealed doors 51 to move away from each other. A cleaning port 61 communicating the collection cavity 111 with the outside is arranged on the collection cavity 111. A collection groove 62 with an upward opening and capable of entering and exiting the cleaning port 61 is arranged in the collection cavity 111 below the cleaning assembly.

[0027] The whole working process is as follows: during the process of the telescopic cylinder driving the hot cutter 13 toward the cleaning gap 115, the push block 3 moves together with the hot cutter 13, and the push block 3 first pushes open a pair of closed doors 51, so that the hot cutter 13 enters the cleaning gap 115, and then the push block 3 moves toward the pushing portion 31, so that the rotating block 114 rotates, and the cleaning components located at the end of the rotating block 114 facing the hot cutting area 15 move toward each other, so that the scraper 24 and the flexible cleaning ball 25 will contact the hot cutter 13 to scrape off the sticky materials, and the distance compensation spring 23 will be squeezed and contracted to extend the time when the scraper 24 and the flexible cleaning ball 25 squeeze the hot cutter 13 During the process of the telescopic cylinder driving the hot cutter 13 to leave the cleaning gap 115, the reset spring 4 will shrink under stress to pull the rotating block 114 to rotate, so that the scraper 24 and the flexible cleaning ball 25 are separated from the hot cutter 13. During this separation process, the distance compensation spring 23 expands under stress, so that the scraper 24 and the flexible cleaning ball 25 can still contact the hot cutter 13 for a period of time. The hot cutter 13 reciprocates in this way to achieve effective cleaning of the hot cutter 13. The sticky materials accumulated on the scraper 24 will accumulate to a certain extent and fall into the collection tank 62 under the influence of self-generated gravity, and will be extracted from the cleaning port 61 through the collection tank 62 to the outside world for subsequent processing.

[0028] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A heat-sealing cutting knife mechanism of a film-covering packaging machine, comprising a frame (1), a base (11) arranged on the frame (1), a heat-sealing cutting knife (13) arranged above the base (11), and a lifting assembly (14) connected to the heat-sealing cutting knife (13) and driving the heat-sealing cutting knife (13) to reciprocate toward the base (11), wherein a heat-sealing area (15) for plastic film to pass through is formed between the heat-sealing cutting knife (13) and the base (11), and characterized in that: The base (11) is provided with a collecting chamber (111) located below the hot cutting zone (15). The collecting chamber (111) has a sinking opening (112) and is communicated with the hot cutting zone (15). Rotating shafts (113) are symmetrically arranged in the collecting chamber (111) along the length direction of the hot cutting knife (13). Each rotating shaft (113) is provided with a rotating block (114) for rotation. A cleaning assembly is provided at one end of the rotating block (114) facing the hot cutting zone (15). A cleaning gap (115) for inserting the hot cutting knife (13) is formed between the two rotating blocks (114). The rotating block (114) is provided with a linkage mechanism for driving the cleaning assembly to move toward the hot cutting knife (13).

2. The heat-sealing cutting knife mechanism of the film-covering packaging machine according to claim 1, characterized in that: The cleaning assembly comprises a sliding groove (21) provided on the side of a rotating block (114) facing the cleaning gap (115), a bearing platform (22) slidably arranged in the sliding groove (21), a distance compensation spring (23) provided between the bearing platform (22) and the sliding groove (21), and a scraper (24) and a flexible cleaning ball (25) provided on the side of the bearing platform (22) facing the cleaning gap (115).

3. The heat-sealing cutting knife mechanism of the film-laminating packaging machine according to claim 1, characterized in that: The linkage mechanism comprises a push block (3) moving with the hot cutting knife (13) and a push portion (31) located at the other end of the rotating block (114) facing the hot cutting area (15); the push block (3) extends to a position below the hot cutting knife (13) close to the sinking opening (112); and the push portion (31) is located on the movement path of the push block (3).

4. The heat-sealing cutting knife mechanism of the film-covering packaging machine according to claim 1, characterized in that: A return spring (4) is connected between the two pushing parts (31), and the return spring (4) returns the pushing part (31) to the moving path of the pushing block (3).

5. The heat-sealing cutting mechanism of the film-covering packaging machine according to claim 1, characterized in that: The invention comprises a pair of sealed doors (51) which are slidably arranged in a collecting chamber (111) and are located between a sinking port (112) and a rotating block (114); the pair of sealed doors (51) are symmetrically arranged in opposite directions along the length of the hot cutting knife (13) and move towards or away from each other; a symmetrical spring (52) is arranged between each of the sealed doors (51) and the collecting chamber (111) to drive the two sealed doors (51) to move towards each other so as to isolate the collecting chamber (111) from the outside; a linkage inclined surface (511) is formed between the two sealed doors (51); when the push block (3) moves, the push block (3) pushes the linkage inclined surface (511) to drive the two sealed doors (51) to move away from each other.

6. The heat-sealing cutting knife mechanism of the film-laminating packaging machine according to claim 1, characterized in that: The collecting chamber (111) is provided with a cleaning port (61) communicating the collecting chamber (111) with the outside, and the collecting chamber (111) is provided with a collecting groove (62) below the cleaning assembly and opening upward and capable of entering and exiting the cleaning port (61).

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