High speed sealing and cutting bag making machine

Abstract

The present invention relates to the technical field of bag making machines, and in particular to a high-speed sealing and cutting bag making machine, comprising a machine body, on which are respectively arranged a sealing and cutting mechanism for sealing a plastic film and cutting a bag body formed after sealing from the plastic film, and a bag feeding mechanism for conveying the plastic film into the machine body, the sealing and cutting mechanism comprising a heat-sealing knife and a cold-cutting knife that reciprocate up and down, the machine body also comprising a guide roller for guiding the plastic film and a cooling mechanism for cooling the heat-sealed portion of the plastic film, the guide roller comprising a first guide roller; the present invention rapidly cools the heat-sealed portion of the plastic film through a water tank, thereby effectively avoiding the increase of waste caused by the heat-sealed portions sticking to each other during the high-speed production process, and effectively avoiding the adhesion of plastic residues to the surface of the cold-cutting knife and the need for frequent cleaning, and by extending the moving distance between the heat-sealing and cold-cutting of the plastic film, a certain cooling time is given to the heat-sealed portion of the plastic film, further effectively avoiding the adhesion of plastic residues to the surface of the cold-cutting knife.

Description

Technical Field

[0001] The invention relates to the technical field of bag making machines, and in particular to a high-speed sealing and cutting bag making machine. Background Art

[0002] Bag making machines are needed in the production and processing of packaging bags. Bag making machines are machines that make various plastic packaging bags or other material packaging bags. Their processing range is packaging bags of various sizes, thicknesses and specifications of plastics or other materials. Generally speaking, plastic packaging bags are the main products.

[0003] At present, the speed of bag making machine is about 130 per minute. However, if the speed is increased by using the design structure of the existing bag making machine, the existing bag making machine will have many disadvantages, among which the main disadvantages are as follows:

[0004] (1) After plastic bags are generally made, they are often gradually stacked and stapled on one side of the sealing and cutting knife to collect the bags (usually called stacking bags). However, due to the need for ultra-high-speed production, the plastic bags often stick to each other during the stacking process because the sealing lines on the bags are not cooled quickly, resulting in an increase in waste.

[0005] (2) The sealing and cutting tool used to cut plastic bags achieves sealing and cutting by heating and melting the bag body. Therefore, plastic residues often adhere to the surface of the sealing and cutting tool and need to be cleaned frequently. Summary of the invention

[0006] Technical issues solved

[0007] In view of the above-mentioned shortcomings of the prior art, the present invention provides a high-speed sealing and cutting bag making machine, which can effectively solve the problems of the prior art that the sealing lines of plastic bags stick to each other and the sealing and cutting knives need to be cleaned frequently.

[0008] Technical Solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A high-speed sealing and cutting bag-making machine comprises a machine body, on which are respectively provided a sealing and cutting mechanism for sealing a plastic film and cutting a bag body formed after sealing from the plastic film, and a bag feeding mechanism for conveying the plastic film into the machine body, the sealing and cutting mechanism comprises a heat-sealing knife and a cold-cutting knife which reciprocate up and down, the machine body also comprises a guide roller for the plastic film and a cooling mechanism for cooling the heat-sealed portion of the plastic film, the guide roller comprises a first guide roller, the first guide roller is located between the heat-sealing knife and the cold-cutting knife and is not coplanar with the heat-sealing knife and the cold-cutting knife, the cooling mechanism comprises a water trough, the water trough is symmetrically arranged with the first guide roller, and the plastic film passes between the water trough and the first guide roller, and the coolant in the water trough cools the heat-sealed portion of the plastic film.

[0011] Furthermore, the bag feeding mechanism is located between the first guide roller and the cold cutting knife, and the bag feeding mechanism includes two groups of L-shaped plates, an upper bag feeding roller group and a lower bag feeding roller group are rotatably connected between the two groups of L-shaped plates, and a second power source for driving the upper bag feeding roller group and the lower bag feeding roller group to rotate towards each other is arranged on the L-shaped plates, and the plastic film passes between the upper bag feeding roller group and the lower bag feeding roller group.

[0012] Furthermore, the water tank is slidably arranged in the machine body and is fixedly connected to the sealing and cutting mechanism.

[0013] Furthermore, cooling cotton is fixedly arranged in the water tank.

[0014] Furthermore, the cooling mechanism also includes a water tank fixedly connected to the body, and a water absorption rope is fixedly connected to the cooling cotton, and the other end of the water absorption rope is located in the water tank.

[0015] Furthermore, the cooling mechanism also includes a dewatering component for removing moisture from the heat-sealed portion of the plastic film.

[0016] Furthermore, the dewatering component includes a dewatering strip shell and dewatering cotton fixed in the dewatering strip shell, and the dewatering end of the dewatering cotton is arranged perpendicular to the moving direction of the plastic film and can contact the plastic film.

[0017] Furthermore, the dewatering component also includes a negative pressure cavity and a pump body connected to the negative pressure cavity, and the negative pressure cavity can absorb the water in the dewatering cotton.

[0018] Furthermore, a sealing strip is provided on the inner wall of the negative pressure cavity opening, the dewatering strip shell is slidably connected in the negative pressure cavity, a through opening communicating with the negative pressure cavity is opened on the side wall of the dewatering strip shell, the dewatering strip shell cooperates with the water tank transmission, when the water tank moves back and forth up and down, the dewatering strip shell moves back and forth in a direction perpendicular to the moving direction of the plastic film, and when the through opening of the dewatering strip shell is completely in contact with the sealing strip, the dewatering strip shell is no longer communicated with the negative pressure cavity.

[0019] Furthermore, a support plate is fixed on the dewatering strip shell, an oblique sliding opening is provided on the support plate, and a sliding rod slidably matched with the oblique sliding opening is fixed on the water tank.

[0020] Beneficial Effects

[0021] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0022] The present invention uses a water tank to quickly cool the heat-sealed portion of the plastic film, thereby effectively avoiding the increase of waste caused by the heat-sealed portions sticking to each other during high-speed production, and effectively avoiding the adhesion of plastic residues on the surface of a cold cutter and the need for frequent cleaning. At the same time, by extending the moving distance between the heat sealing and cold cutting of the plastic film, a certain cooling time is given to the heat-sealed portion of the plastic film, further effectively avoiding the adhesion of plastic residues on the surface of the cold cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall first-view structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall second viewing angle structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0027] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0028] Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0029] Figure 6 It is a schematic diagram of the explosion structure of the present invention;

[0030] Figure 7 It is a schematic diagram of the bag delivery mechanism structure of the present invention;

[0031] Figure 8 It is a schematic diagram of the cooling mechanism structure of the present invention;

[0032] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at C in the middle;

[0033] The numbers in the figure represent: 1, machine body; 2, sealing and cutting mechanism; 201, heat sealing knife; 202, cold cutting knife; 203, heat sealing rack; 204, cold cutting rack; 3, bag feeding mechanism; 301, L-shaped plate; 302, second power source; 303, upper bag feeding roller; 304, lower bag feeding roller; 4, cooling mechanism; 401, water tank; 402, cooling cotton; 403, water tank; 404, water absorption rope; 405, dewatering strip shell; 406, dewatering cotton; 407, negative pressure chamber; 4 08. Sealing strip; 409. Through port; 410. Support plate; 411. Oblique sliding port; 412. Sliding rod; 413. Bellows; 414. Support rod; 415. Guide rod; 416. Abutment plate; 5. First guide roller; 6. Second guide roller; 7. Third guide roller; 8. Fourth guide roller; 9. Fifth guide roller; 10. Sixth guide roller; 11. First power source; 12. Power rod; 13. Heat sealing pad; 14. Bag discharge pad; 15. Air duct; 16. Transmission rod; 20. Plastic film. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention will be further described below in conjunction with the embodiments. Example

[0036] A high-speed sealing and cutting bag making machine of this embodiment, referring to Figure 1-9 The machine body 1 comprises a sealing and cutting mechanism 2 for sealing a plastic film 20 and cutting a formed bag body from the plastic film 20 after sealing, and a bag feeding mechanism 3 for conveying the plastic film 20 into the machine body 1, as well as a guide roller for guiding the plastic film 20 and a cooling mechanism 4 for cooling the heat-sealed part of the plastic film 20; wherein the plastic film 20 is moved from left to right (with the Figure 3 is the reference direction, the same below).

[0037] Specifically, the guide rollers include at least six. In the present technical solution, six are preferred, which are the second guide roller 6, the third guide roller 7, the fourth guide roller 8, the fifth guide roller 9, the first guide roller 5 and the sixth guide roller 10, which are connected to the machine body 1 by rotating from left to right in sequence; wherein the fourth guide roller 8, the fifth guide roller 9 and the sixth guide roller 10 are coplanar, and the first guide roller 5 is located below between the fifth guide roller 9 and the sixth guide roller 10.

[0038] The bag feeding mechanism 3 includes two groups of L-shaped plates 301, and an upper bag feeding roller group and a lower bag feeding roller group are rotatably connected between the two groups of L-shaped plates 301. In the technical solution, the upper bag feeding roller group selects four upper bag feeding rollers 303, and the lower bag feeding roller group selects four lower bag feeding rollers 304. A second power source 302 for driving the upper bag feeding roller group and the lower bag feeding roller group to rotate is also arranged between the opposite sides of the two groups of L-shaped plates 301. The specific driving method is the existing technology and is not described in detail here. The adjacent upper bag feeding rollers 303 are matched by belt transmission. Similarly, the adjacent lower bag feeding rollers 304 are matched by belt transmission. Belt transmission cooperation; wherein, the two upper bag feeding rollers 303 on the left are symmetrically arranged with the fifth guide roller 9 and the sixth guide roller 10 respectively, so that the plastic film 20 passes between the fifth guide roller 9 and the first upper bag feeding roller 303 on the left and between the sixth guide roller 10 and the second upper bag feeding roller 303 on the left. At the same time, the two upper bag feeding rollers 303 on the right and the two lower bag feeding rollers 304 are symmetrically arranged up and down, so that the plastic film 20 passes between the two upper bag feeding rollers 303 on the right and the two lower bag feeding rollers 304, thereby realizing the conveying of the plastic film 20 from left to right.

[0039] To ensure that the plastic film 20 can continue to move rightward after being removed from the bag feeding mechanism 3, air ducts 15 are symmetrically arranged in the body 1, and air nozzles are arranged on the air ducts 15 to be inclined toward each other, so as to blow air toward the plastic film 20 and exert a force to move the plastic film 20 to the rightward.

[0040] The sealing and cutting mechanism 2 includes a heat sealing knife 201 and a cold cutting knife 202, and also includes a heat sealing frame 203 fixedly connected to the heat sealing knife 201 and a cold cutting frame 204 fixedly connected to the cold cutting knife 202, wherein the heat sealing frame 203 and the cold cutting frame 204 are respectively fixedly connected to the transmission rod 16 slidably connected to the front and rear of the body 1, and two power rods 12 are rotatably connected in the body 1, and the transmission rod 16 cooperates with the power rod 12 in transmission. The specific transmission method is the existing technology and is not described in detail here. A first power source 11 for driving the two power rods 12 to rotate is also provided in the body 1, so that when the power rod 12 rotates, the transmission rod 16 performs up and down reciprocating motion, thereby realizing the up and down reciprocating motion of the heat sealing frame 203 and the cold cutting frame 204.

[0041] At the same time, in order to ensure the heat sealing effect and the cold cutting effect, a heat sealing pad 13 and a bag outlet pad 14 are respectively fixed on the machine body 1, respectively providing a supporting effect, so that the heat sealing frame 203 can be in full contact with the plastic film 20, and the cold cutting knife 202 can be in full contact with the plastic film 20.

[0042] In the present technical solution, the heat sealing knife 201 and the cold cutting knife 202 are respectively located at the upper left and upper right of the first guide roller 5, so that the heat sealing knife 201 and the cold cutting knife 202 are separated, and the moving distance between the heat sealing and the cold cutting of the plastic film 20 is extended, thereby giving the plastic film 20 a certain cooling time at the heat sealing part, and effectively avoiding the adhesion of plastic residues on the surface of the cold cutting knife 202 and the need for frequent cleaning.

[0043] To further ensure that the heat-sealed portion of the plastic film 20 is cooled, the cooling mechanism 4 includes a water trough 401, which is symmetrically arranged with the first guide roller 5 up and down, so that when the plastic film 20 passes between the water trough 401 and the first guide roller 5, the coolant in the water trough 401 quickly cools the heat-sealed portion of the plastic film 20; in this technical solution, municipal tap water is selected as the coolant.

[0044] At the same time, the first guide roller 5 of the technical solution is selected as a cooling roller to further accelerate the cooling of the heat-sealed part of the plastic film 20.

[0045] In order to achieve rapid cooling of only the heat-sealed portion of the plastic film 20 and avoid causing one side of the plastic film 20 to be completely adhered to water, resulting in moisture adherence between adjacent bags in subsequent collection bags and affecting the storage and use of the collection bags, in the present technical solution, the water tank 401 is slidably arranged in the machine body 1 and is fixedly connected to the sealing and cutting mechanism 2. Specifically, the water tank 401 is fixedly connected to the heat-sealing frame 203 through the support rod 414, so that when the heat-sealing frame 203 moves up to the highest point, the water tank 401 moves up and cools the heat-sealed portion of the plastic film 20, and when the heat-sealing frame 203 moves down, the water tank 401 moves down and resets, so that during the heat-sealing cooling process, only the heat-sealed portion of the plastic film 20 is cooled.

[0046] In order to further reduce the moisture adhered to the heat-sealed part of the plastic film 20, a cooling cotton 402 is fixedly arranged in the water tank 401. The cooling cotton 402 can be made of a water-absorbent material such as sponge or cotton wool. The present technical solution selects cotton wool. The cooling cotton 402 is in contact with the heat-sealed part of the plastic film 20, thereby effectively reducing the moisture adhered to the heat-sealed part of the plastic film 20.

[0047] To ensure that the cooling cotton 402 continuously contains a certain amount of moisture, the cooling mechanism 4 also includes a water tank 403 fixedly connected to the body 1. The water tank 401 is connected to the water tank 401 through a bellows 413. A water absorption rope 404 is fixedly connected to the cooling cotton 402. The water absorption rope 404 passes through the bellows 413 and penetrates into the water tank 403. The water absorption rope 404 of the technical solution is made of cotton wool. Through the water absorption characteristics of cotton wool, the water in the water tank 403 is absorbed into the cooling cotton 402.

[0048] At the same time, a water level sensor is also provided in the water tank 403 to ensure that there is sufficient water in the water tank 403 .

[0049] To further ensure that there is no moisture between adjacent bags in the collection bag and facilitate subsequent use and storage of the bags in the collection bag, the cooling mechanism 4 also includes a dehydration component for removing moisture from the heat-sealed portion of the plastic film 20 .

[0050] Specifically, the dewatering component includes a dewatering strip shell 405 and a dewatering cotton 406 fixed in the dewatering strip shell 405. The dewatering end of the dewatering cotton 406 is arranged perpendicular to the moving direction of the plastic film 20 and can contact the plastic film 20, so that the dewatering cotton 406 absorbs the moisture at the heat seal of the plastic film 20, effectively avoiding moisture from sticking to the outside of the plastic film 20.

[0051] In order to remove the moisture in the water-removing cotton 406 and ensure the continuous water absorption and water removal effect of the water-removing cotton 406, the water removal component also includes a negative pressure chamber 407 and a pump body (not shown) connected to the negative pressure chamber 407. The negative pressure chamber 407 can absorb the water in the water-removing cotton 406, thereby ensuring the efficient water absorption characteristics of the water-removing cotton 406.

[0052] Due to the negative pressure generated in the negative pressure cavity 407, the water in the water-removing cotton 406 is sucked away. In order to prevent the water-removing cotton 406 from generating negative pressure suction on the plastic film 20 due to the negative pressure and affecting the movement of the plastic film 20, in the present technical solution, the water-removing strip shell 405 is slidably connected in the negative pressure cavity 407, and the side wall of the water-removing strip shell 405 is provided with a through opening 409 which communicates with the negative pressure cavity 407, and a sealing strip 408 is provided on the inner wall of the cavity opening of the negative pressure cavity 407. The water-removing strip shell 405 is sealed with the sealing strip 408, and at the same time, the water-removing strip shell 405 is transmission-coordinated with the water trough 401, so that when the water trough 401 moves back and forth up and down, the water-removing strip shell 405 moves back and forth in a direction perpendicular to the moving direction of the plastic film 20.

[0053] Specifically, a support plate 410 is fixedly connected to the dewatering strip housing 405, and an oblique sliding opening 411 is opened on the support plate 410. A sliding rod 412 that slides with the oblique sliding opening 411 is fixed on the water tank 401, so that the water tank 401 can reciprocate up and down to drive the dewatering strip housing 405 to reciprocate along a direction perpendicular to the moving direction of the plastic film 20; at the same time, a sliding rod 412 that slides with the support plate 410 is fixedly connected in the body 1 to guide the movement of the dewatering strip housing 405;

[0054] When the water tank 401 moves upward, the dewatering strip shell 405 moves toward the heat-sealed portion of the plastic film 20, and when the opening 409 of the dewatering strip shell 405 is completely in contact with the sealing strip 408, the dewatering strip shell 405 is no longer in communication with the negative pressure cavity 407, and the dewatering cotton 406 does not generate negative pressure suction at this time. After the water tank 401 moves upward to the highest point, the cooling cotton 402 cools the heat-sealed portion of the plastic film 20, and at the same time, the dewatering cotton 406 contacts the previous heat-sealed portion of the plastic film 20, Moisture absorption; when the water tank 401 moves downward to reset, the dewatering strip shell 405 moves away from the heat seal of the plastic film 20, and when the opening 409 of the dewatering strip shell 405 is no longer in contact with the sealing strip 408, the dewatering strip shell 405 is communicated with the negative pressure cavity 407, and continues to absorb the moisture in the dewatering cotton 406, thereby not only achieving the absorption of moisture in the dewatering cotton 406 and ensuring the water absorption and dewatering effect of the dewatering cotton 406, but also preventing the dewatering cotton 406 from adsorbing the plastic film 20 and affecting the movement of the plastic film 20.

[0055] In order to ensure the water absorption effect of the dehumidifying cotton 406 on the heat-sealed portion of the plastic film 20, a support plate 416 symmetrical to the dehumidifying cotton 406 is fixed in the body 1 to provide support when the dehumidifying cotton 406 contacts the heat-sealed portion of the plastic film 20.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-speed sealing and cutting bag making machine, include: A machine body (1), the machine body (1) being provided with a sealing and cutting mechanism (2) for sealing a plastic film (20) and cutting a bag body formed after sealing from the plastic film (20), and a bag feeding mechanism (3) for feeding the plastic film (20) into the machine body (1), the sealing and cutting mechanism (2) comprising a heat-sealing knife (201) and a cold-cutting knife (202) which move reciprocatingly up and down, The invention is characterized in that: the machine body (1) further comprises guide rollers for guiding the plastic film (20), the guide rollers comprising a first guide roller (5), and further comprises a cooling mechanism (4) which moves up and down in linkage with the machine body (1), the cooling mechanism (4) comprising a water tank (401) which is provided with cooling cotton (402) and is connected to a water tank (403) via a water absorption rope (404); The first guide roller (5) and the water trough (401) are symmetrically distributed up and down and are located between the heat sealing knife (201) and the cold cutting knife (202), and are not coplanar with the heat sealing knife (201) and the cold cutting knife (202), so that the heat sealing part of the plastic film (20) passes between the water trough (401) and the first guide roller (5), and the cooling liquid in the water trough (401) cools the heat sealing part of the plastic film (20); A dewatering assembly is provided on the machine body (1), comprising a dewatering strip shell (405), dewatering cotton (406), and a through-port (409) communicating with the negative pressure chamber (407). The dewatering strip shell (405) is in driving cooperation with the water tank (401), so that the dewatering cotton (406) contacts and separates from the heat-sealed portion of the plastic film (20) as the water tank (401) reciprocates up and down, and after separation, the absorbed water is discharged through the through-port (409) communicating with the negative pressure chamber (407).

2. A high-speed sealing and cutting bag making machine according to claim 1, It is characterized in that The bag feeding mechanism (3) is located between the first guide roller (5) and the cold cutting knife (202), and comprises two groups of L-shaped plates (301), an upper bag feeding roller group and a lower bag feeding roller group are rotatably connected between the two groups of L-shaped plates (301), and a second power source (302) for driving the upper bag feeding roller group and the lower bag feeding roller group to rotate towards each other is provided on the L-shaped plates (301), and the plastic film (20) passes between the upper bag feeding roller group and the lower bag feeding roller group.

3. A high-speed sealing and cutting bag making machine according to claim 1, It is characterized in that The water tank (401) is slidably disposed in the machine body (1) and is fixedly connected to the sealing and cutting mechanism (2).

4. A high-speed sealing and cutting bag making machine according to claim 3, It is characterized in that Cooling cotton (402) is fixedly arranged in the water tank (401).

5. A high-speed sealing and cutting bag making machine according to claim 4, It is characterized in that The cooling mechanism (4) further comprises a water tank (403) fixedly connected to the machine body (1); a water absorbing rope (404) is fixedly connected to the cooling cotton (402); and the other end of the water absorbing rope (404) is located in the water tank (403).

6. A high-speed sealing and cutting bag making machine according to claim 5, It is characterized in that The cooling mechanism (4) also includes a dewatering component for removing moisture from the heat-sealed portion of the plastic film (20).

7. A high-speed sealing and cutting bag making machine according to claim 6, It is characterized in that The dewatering end of the dewatering cotton (406) is arranged perpendicular to the moving direction of the plastic film (20) and can be in contact with the plastic film (20).

8. A high-speed sealing and cutting bag making machine according to claim 7, It is characterized in that The dewatering component further comprises a pump body connected to the negative pressure cavity (407), and the negative pressure cavity (407) can absorb water in the dewatering cotton (406).

9. A high-speed sealing and cutting bag making machine according to claim 8, It is characterized in that The inner wall of the cavity opening of the negative pressure cavity (407) is provided with a sealing strip (408); the dewatering strip shell (405) is slidably connected in the negative pressure cavity (407); a through opening (409) communicating with the negative pressure cavity (407) is opened on the side wall of the dewatering strip shell (405); the dewatering strip shell (405) and the water tank (401) are transmission-coordinated; when the water tank (401) moves up and down, the dewatering strip shell (405) moves back and forth in a direction perpendicular to the moving direction of the plastic film (20); and when the through opening (409) of the dewatering strip shell (405) is completely in contact with the sealing strip (408), the dewatering strip shell (405) is no longer in communication with the negative pressure cavity (407).

10. A high-speed sealing and cutting bag making machine according to claim 9, It is characterized in that A support plate (410) is fixed on the dewatering strip housing (405), an oblique sliding opening (411) is provided on the support plate (410), and a sliding rod (412) slidably matched with the oblique sliding opening (411) is fixed on the water tank (401).

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