A heat-sealing and cold-cutting device for packaging bags
By introducing a cleaning component into the heat-sealing and cold-cutting device for packaging bags, and utilizing the inclined cleaning clamps and suction nozzles to remove plastic residue, the problem of molten plastic adhesion is solved, thereby improving the flatness and production quality of the packaging bags.
Patent Information
- Application Number
- CN202522682237.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-18
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-18
AI Technical Summary
In existing heat-sealing and cold-cutting equipment for packaging bags, molten plastic tends to adhere to the blade, forming granular bumps or pits, which affects the flatness of the packaging and reduces production quality.
A heat-sealing and cold-cutting device for packaging bags was designed, equipped with a cleaning component, including a cleaning clamp and a suction nozzle. The upper and lower surfaces of the cleaning clamp are beveled, and the suction nozzle is connected to a vacuum cleaner via a hose to automatically scrape off plastic residue and impurities from the surface of the heat-sealing blade.
It effectively prevents plastic residue from embedding in the sealing area, keeps the heat sealing knife clean, improves cleaning efficiency, and ensures the flatness of the packaging bag and production quality.
Smart Images
Figure CN224940722U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging equipment technology, specifically to a heat-sealing and cold-cutting device for packaging bags. Background Technology
[0002] The heat-sealing and cold-cutting device for packaging bags is a core piece of equipment in modern packaging production lines. Its role is involved in the entire process of packaging bag forming, sealing, and cutting. Its value is not only reflected in the improvement of production efficiency and the reduction of costs, but also in the quality upgrade of industries such as food, pharmaceuticals, and logistics.
[0003] Materials such as PE and PP are prone to melting and flowing at heat-sealing temperatures. Molten plastic may adhere to the blade, and the adhered plastic fragments may embed into the sealing area, forming granular bumps or pits, affecting the flatness of the packaging and reducing production quality. Summary of the Invention
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a heat-sealing and cold-cutting device for packaging bags. It has the advantage of automatically scraping off plastic residues and impurities adhering to both sides when the heat-sealing blade moves up and down. This solves the problem that molten plastic adheres to the surface of the heat-sealing blade, and the adhering plastic fragments and residues may embed into the sealing area, forming granular protrusions or pits, affecting the flatness of the packaging and reducing production quality.
[0006] (II) Technical Solution
[0007] To achieve the purpose of automatically scraping off the plastic residue and impurities adhering to both sides during the return stroke of the heat sealing knife, this utility model provides the following technical solution: It includes a base, a first mounting frame fixedly connected to the top surface of the base, a heat sealing assembly disposed on the left side inside the first mounting frame, a cleaning assembly disposed below the heat sealing assembly, a cold cutting assembly disposed on the right side inside the first mounting frame, and the cleaning assembly including a second mounting frame fixedly connected to the left side inside the first mounting frame. A third mounting plate is symmetrically mounted inside the second mounting frame, and several third spring guide posts are symmetrically mounted inside the second mounting frame. One end of each third spring guide post is fixedly connected to a third mounting plate, and a cleaning clamp is fixedly connected to the side of each third mounting plate away from the third spring guide post.
[0008] As a further embodiment of this utility model: a suction nozzle is fixedly connected to the bottom of the third mounting plate on the left side inside the second mounting frame; a fixing groove is provided on the bottom left side of the second mounting frame; the inner wall of the fixing groove is slidably connected to the bottom left side of the suction nozzle; the bottom left side of the suction nozzle is fixedly connected to one end of a hose; and the other end of the hose extends to the outer wall of the first mounting frame.
[0009] As a further improvement of this utility model, each of the cleaning clamps has a number of granular protrusions fixedly connected to its surface.
[0010] As a further embodiment of this utility model: the heat sealing assembly includes a first limiting plate slidably connected to the inner left side wall of the first mounting frame, a first electric push rod fixedly connected to the top left side of the first mounting frame, the top surface of the first limiting plate being fixedly connected to the output end of the first electric push rod, three first spring guide posts being equidistantly installed on the bottom surface of the first limiting plate, the bottom surface of each first spring guide post being fixedly connected to the first mounting plate, and a heat sealing knife being fixedly connected to the bottom of the first mounting plate.
[0011] As a further embodiment of this utility model: the cold cutting component includes a second limiting plate slidably connected to the inner right side wall of the first mounting frame, a second electric push rod fixedly connected to the top right side of the first mounting frame, the top surface of the second limiting plate fixedly connected to the output end of the second electric push rod, three second spring guide posts equidistantly installed on the bottom surface of the second limiting plate, the bottom surface of each second spring guide post fixedly connected to the second mounting plate, and a cold cutting blade fixedly connected to the bottom of the second mounting plate.
[0012] As a further improvement of this utility model, a pad plate is fixedly connected to the top surface of the base.
[0013] (III) Beneficial Effects
[0014] Compared with the prior art, this utility model provides a heat-sealing and cold-cutting device for packaging bags, which has the following beneficial effects:
[0015] 1. The heat-sealing and cold-cutting device for packaging bags features a cleaning clamp with inclined surfaces on both the upper and lower sides. When the heat-sealing blade presses down, the thrust is evenly applied to the inclined surfaces, allowing the cleaning clamp to move smoothly and steadily to both sides. This ensures full contact between the cleaning clamp and the heat-sealing blade, guaranteeing a good cleaning effect. The granular protrusions fixedly connected to the surface of the cleaning clamp alter its surface flatness, creating an irregular surface structure. This effectively prevents plastic residue scraped from the heat-sealing blade from adhering to the surface of the cleaning clamp, thus achieving the effect of automatically scraping away plastic residue and impurities adhering to both sides when the heat-sealing blade moves up and down.
[0016] 2. The heat-sealing and cold-cutting device for packaging bags is connected to a vacuum cleaner via a hose through a suction nozzle fixed to the bottom of the third mounting plate. While cleaning the cleaning plate and removing residue from the surface of the heat-sealing knife, the suction nozzle can promptly remove the scraped plastic residue, preventing the residue from re-contaminating the heat-sealing knife or other parts. This further improves cleaning efficiency, keeps the heat-sealing knife clean, and facilitates the normal operation of subsequent heat-sealing work. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of the heat-sealing and cold-cutting device for packaging bags of this utility model;
[0018] Figure 2 This is a schematic cross-sectional view of the first mounting frame structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the heat-sealing assembly structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the cleaning component structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the cold-cutting component structure of this utility model.
[0022] In the diagram: 1. Base; 2. First mounting frame; 3. Heat sealing assembly; 31. First limiting plate; 32. First electric push rod; 33. First spring guide post; 34. First mounting plate; 35. Heat sealing knife; 4. Cold cutting assembly; 41. Second limiting plate; 42. Second electric push rod; 43. Second spring guide post; 44. Second mounting plate; 45. Cold cutting knife; 5. Cleaning assembly; 51. Second mounting frame; 52. Third mounting plate; 53. Cleaning clamp; 54. Suction nozzle; 55. Third spring guide post; 56. Fixing groove; 57. Hose; 58. Granular protrusion; 6. Blade pad. Detailed Implementation
[0023] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-2 A heat-sealing and cold-cutting device for packaging bags includes a base 1, a first mounting frame 2 fixedly connected to the top surface of the base 1, a heat-sealing component 3 disposed on the left side inside the first mounting frame 2, a cleaning component 5 disposed below the heat-sealing component 3, a cold-cutting component 4 disposed on the right side inside the first mounting frame 2, and a pad blade 6 fixedly connected to the top surface of the base 1.
[0025] Please see Figure 3The heat sealing assembly 3 includes a first limiting plate 31 slidably connected to the inner left side wall of the first mounting frame 2. A first electric push rod 32 is fixedly connected to the top left side of the first mounting frame 2. The top surface of the first limiting plate 31 is fixedly connected to the output end of the first electric push rod 32. Three first spring guide posts 33 are equidistantly installed on the bottom surface of the first limiting plate 31. The bottom surface of each first spring guide post 33 is fixedly connected to the first mounting plate 34. A heat sealing knife 35 is fixedly connected to the bottom of the first mounting plate 34. The setting of the first spring guide posts 33 enables the heat sealing knife 35 to have a certain buffering effect during the heat sealing process, thereby effectively protecting the heat sealing knife 35 and extending its service life. The heat sealing knife 35 is driven to move up and down by the first electric push rod 32, thereby achieving the sealing of the packaging bag.
[0026] It should be noted that the heat sealing knife is an existing technology. It mainly generates heat through a heating element (resistance wire or heating film) to melt the plastic film on the contact surface. During this process, the current or voltage of the heating element is adjusted by a temperature controller.
[0027] Please see Figure 5 The cold-cutting assembly 4 includes a second limiting plate 41 slidably connected to the inner right side wall of the first mounting frame 2. A second electric push rod 42 is fixedly connected to the top right side of the first mounting frame 2. The top surface of the second limiting plate 41 is fixedly connected to the output end of the second electric push rod 42. Three second spring guide posts 43 are equidistantly installed on the bottom surface of the second limiting plate 41. The bottom surface of each second spring guide post 43 is fixedly connected to the second mounting plate 44. A cold-cutting blade 45 is fixedly connected to the bottom of the second mounting plate 44. When the second electric push rod 42 pushes the second limiting plate 41 and the second mounting plate 44 downward to perform cold cutting, the second spring guide posts 43 can buffer the pressure, thereby effectively protecting the cold-cutting blade 45 and extending its service life. The second electric push rod 42 drives the cold-cutting blade 45 to move up and down, thereby completing the cutting of the packaging bag.
[0028] It should be noted that the cold-cutting blade 45 uses a high-hardness alloy blade (such as SKH-9 high-speed steel), and achieves physical cutting (at room temperature, without a heating device) through the pressure provided by the second electric push rod 42. In addition, the first electric push rod 32 and the second electric push rod 42 are controlled by a PLC (such as starting cold cutting 0.1-0.3s after the heat-sealing blade resets), adapting to the cooling requirements of packaging bags of different materials.
[0029] Please see Figure 3-4The cleaning component 5 includes a second mounting frame 51 fixedly connected to the left side inside the first mounting frame 2. A third mounting plate 52 is symmetrically mounted inside the second mounting frame 51. Several third spring guide posts 55 are symmetrically mounted inside the second mounting frame 51. One end of each third spring guide post 55 is fixedly connected to the third mounting plate 52. A cleaning clamping plate 53 is fixedly connected to the side of each third mounting plate 52 away from the third spring guide post 55. The upper and lower surfaces of the cleaning clamping plate 53 are designed as inclined surfaces. When the heat sealing knife 35 presses down, its thrust can be evenly applied to the inclined surfaces of the cleaning clamping plate 53, allowing the cleaning clamping plate 53 to move smoothly and steadily to both sides. This design not only ensures full contact between the cleaning clamp 53 and the heat sealing knife 35, guaranteeing the cleaning effect, but also features several granular protrusions 58 fixedly connected to the surface of each cleaning clamp 53. These granular protrusions 58 alter the flatness of the clamp surface, making it no longer a smooth plane. This irregular surface structure effectively prevents plastic residue scraped from the heat sealing knife 35 from adhering to the surface of the cleaning clamp 53. Under the action of the third spring guide post 55, the cleaning clamp 53 can tightly fit the heat sealing knife 35, effectively removing dust, impurities, and plastic residue from the surface of the heat sealing knife 35.
[0030] It is worth noting that the aforementioned granular bumps 58 can be made of polytetrafluoroethylene or ceramic coating to achieve a wear-resistant effect and prevent damage to the bumps when the blade repeatedly contacts and rubs against them; at the same time, this type of material also has the characteristics of high temperature resistance and non-stick properties.
[0031] Furthermore, a suction nozzle 54 is fixedly connected to the bottom of the third mounting plate 52 on the left side inside the second mounting frame 51. A fixing groove 56 is provided on the bottom left side of the second mounting frame 51. The inner wall of the fixing groove 56 is slidably connected to the bottom left side of the suction nozzle 54. When the cleaning clamp 53 moves, it will drive the suction nozzle 54 to move, so that the bottom left side of the suction nozzle 54 slides in the fixing groove 56, thereby preventing the suction nozzle 54 from affecting the up and down movement of the heat sealing knife 35. The bottom left side of the suction nozzle 54 is fixedly connected to one end of the hose 57, and the other end of the hose 57 extends... The hose 57, located near the outer wall of the first mounting frame 2, is connected to a vacuum cleaner. Through the suction of the vacuum cleaner, the nozzle 54, fixedly connected to the bottom 52 of the third mounting plate, is also connected to the vacuum cleaner via the hose 57. While the cleaning clamp 53 cleans residue from the surface of the heat-sealing blade 35, the nozzle 54 promptly removes any scraped plastic residue. When molten or semi-molten material on the heat-sealing blade is scraped onto the cleaning clamp 53, its adhesiveness decreases due to the reduced temperature, allowing it to be sucked away by suction. This prevents residue from re-contaminating the heat-sealing blade or other components, further improving cleaning efficiency.
[0032] Working principle: The packaging bag first passes through the heat-sealing assembly 3. The first electric push rod 32 is activated, and its output end extends downwards, pushing the first limiting plate 31 to slide downwards along the left inner wall of the first mounting frame 2. The three first spring guide posts 33, equidistantly mounted on the bottom surface of the first limiting plate 31, move downwards accordingly, causing the first mounting plate 34 and the heat-sealing blade 35 fixed to the bottom of the first mounting plate 34 to move downwards. When the heat-sealing blade 35 presses down to contact the packaging bag, the first spring guide posts 33 begin to buffer, preventing rigid impact between the heat-sealing blade 35 and the packaging bag or other components, while simultaneously performing the heat-sealing operation to achieve a sealed packaging bag. After heat sealing is completed, the first electric push rod 32 drives the heat-sealing blade 35 to return to its original position.
[0033] Then, it enters the cooling assembly 4, and the second electric push rod 42 is activated. The output end of the second electric push rod 42 extends downward, pushing the second limiting plate 41 to slide downward along the inner right side of the first mounting frame 2. The three second spring guide posts 43, which are equidistantly installed on the bottom surface of the second limiting plate 41, move downward accordingly, causing the second mounting plate 44 and the cold cutting blade 45 fixed at the bottom of the second mounting plate 44 to move downward. When the cold cutting blade 45 is pressed down to contact the packaging bag, the second spring guide posts 43 play a buffering role, preventing the cold cutting blade 45 from having a rigid impact with the packaging bag or other components, while simultaneously cutting the packaging bag to complete the cold cutting operation. After the cold cutting is completed, the second electric push rod 42 drives the cold cutting blade 45 to return to its original position.
[0034] The cleaning clamp 53 is designed with inclined surfaces on both the top and bottom. When the heat sealing knife 35 is pressed down, the thrust is evenly applied to the inclined surfaces of the cleaning clamp 53, allowing the cleaning clamp 53 to move smoothly and steadily to both sides, ensuring full contact between the cleaning clamp 53 and the heat sealing knife 35. Subsequently, the packaging bag is heat-sealed. When the heat sealing knife 35 completes the heat sealing and returns to its original position, the cleaning clamp 53 can tightly fit the heat sealing knife 35 under the action of the third spring guide post 55, effectively removing dust, impurities, and plastic residues from the surface of the heat sealing knife 35. The granular protrusions 58 on the surface of the cleaning clamp 53 contact the surface of the heat sealing knife 35, scraping away the dust, impurities, and plastic residues. At the same time, the suction nozzle 54 fixedly connected to the bottom of the third mounting plate 52 generates suction under the action of a vacuum cleaner, and promptly sucks away the scraped plastic residues through the hose 57, preventing the residues from re-contaminating the heat sealing knife 35 or other components. After cleaning is completed, the cleaning clamp 53 returns to its initial position under the action of the third spring guide post 55, waiting for the next cleaning.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A packaging bag heat-seal cold-cut device comprising a base (1), characterized in that: The top surface of the base (1) is fixedly connected to a first mounting frame (2). A heat sealing assembly (3) is provided on the left side inside the first mounting frame (2). A cleaning assembly (5) is provided below the heat sealing assembly (3). A cold cutting assembly (4) is provided on the right side inside the first mounting frame (2). The cleaning assembly (5) includes a second mounting frame (51) fixedly connected to the left side inside the first mounting frame (2). A third mounting plate (52) is symmetrically installed inside the second mounting frame (51). A plurality of third spring guide posts (55) are symmetrically installed inside the second mounting frame (51). One end of each third spring guide post (55) is fixedly connected to the third mounting plate (52). A cleaning clamp (53) is fixedly connected to the side of each third mounting plate (52) away from the third spring guide post (55).
2. The heat-sealing and cold-cutting device for packaging bags according to claim 1, characterized in that: A suction nozzle (54) is fixedly connected to the bottom of the third mounting plate (52) on the left side inside the second mounting frame (51). A fixing groove (56) is opened at the bottom left side of the second mounting frame (51). The inner wall of the fixing groove (56) is slidably connected to the bottom left side of the suction nozzle (54). The bottom left side of the suction nozzle (54) is fixedly connected to one end of the hose (57). The other end of the hose (57) extends to the outer wall of the first mounting frame (2).
3. The packaging bag heat-sealing and cold-cutting device according to claim 1, characterized in that: Each of the cleaning clamps (53) has a number of granular protrusions (58) fixedly connected to its surface.
4. The packaging bag heat-sealing and cold-cutting device according to claim 1, characterized in that: The heat sealing assembly (3) includes a first limiting plate (31) slidably connected to the inner left side wall of the first mounting frame (2). A first electric push rod (32) is fixedly connected to the top left side of the first mounting frame (2). The top surface of the first limiting plate (31) is fixedly connected to the output end of the first electric push rod (32). Three first spring guide posts (33) are equidistantly installed on the bottom surface of the first limiting plate (31). The bottom surface of each first spring guide post (33) is fixedly connected to the first mounting plate (34). A heat sealing knife (35) is fixedly connected to the bottom of the first mounting plate (34).
5. The packaging bag heat-sealing and cold-cutting device according to claim 1, characterized in that: The cold cutting assembly (4) includes a second limiting plate (41) slidably connected to the inner right side wall of the first mounting frame (2). A second electric push rod (42) is fixedly connected to the top right side of the first mounting frame (2). The top surface of the second limiting plate (41) is fixedly connected to the output end of the second electric push rod (42). Three second spring guide posts (43) are equidistantly installed on the bottom surface of the second limiting plate (41). The bottom surface of each second spring guide post (43) is fixedly connected to the second mounting plate (44). A cold cutting blade (45) is fixedly connected to the bottom of the second mounting plate (44).
6. The packaging bag heat-sealing and cold-cutting device according to claim 1, characterized in that: A pad plate (6) is fixedly connected to the top surface of the base (1).