Punching mechanism for air holes of film bag

Abstract

The utility model discloses a punching mechanism for film bag air holes, which relates to the technical field of film bag production and comprises a film passing plate, a film passing groove is arranged on the film passing plate, a first through hole communicated with the film passing groove is arranged on the upper end face of the film passing plate, a punching head is arranged in the first through hole, and a first cylinder is mounted at the upper end of the film passing plate. The first cylinder is used for driving the punching head to lift, and the lower end of the first cylinder is connected with a first push rod which is connected with the punching head; a second through hole communicated with the film passing groove is formed in the lower end of the film passing plate, a top ring is arranged in the second through hole, a middle hole is formed in the top ring, the lower end of the top ring is connected with a top plate, a second air cylinder is installed at the lower end of the film passing plate, the top plate transversely extends and then is connected with the second air cylinder, and the second air cylinder is used for driving the top plate to ascend and descend. The defects that the edges of the holes are uneven and split are avoided, and the strength of the film bag is not affected.

Description

Technical Field

[0001] This utility model relates to the field of film bag production technology, and in particular to a perforation mechanism for air vents in film bags. Background Technology

[0002] Film bags, made by laminating multiple plastic films using a bag-making machine, can be customized into different types of bags to meet various needs. They are essential items in people's daily lives. Due to their low cost, good processability, and strong flexibility, they are widely used in daily life, commercial retail, and industrial transportation. From supermarket shopping bags to industrial product packaging bags, they all play an important role in loading, transporting, and storing goods.

[0003] During the production of film bags, air can easily remain inside the bag after sealing and before sale, causing the bag to expand and making it inconvenient for transporting goods. Therefore, a punching mechanism is needed to punch holes in the bag during production to allow the internal air to escape. Most current punching devices use a cylinder to drive the punching head to punch holes. However, these devices do not have the function of keeping the film bag straight at the punching location while it is being punched on the transport line. The bag will deform as the punching head is pressed down during punching, resulting in uneven hole cuts and possible tears at the hole edges, which affects the strength of the bag.

[0004] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a perforation mechanism for a breathable hole in a film bag, comprising a film plate, a film groove being formed on the film plate, a first through hole communicating with the film groove being formed on the upper surface of the film plate, a perforation head being provided in the first through hole, a first cylinder being installed on the upper surface of the film plate, the first cylinder being used to drive the perforation head to move up and down, a first push rod being connected to the lower end of the first cylinder, and the first push rod being connected to the perforation head;

[0007] The lower end of the membrane plate is provided with a second through hole that communicates with the membrane groove. A top ring is provided inside the second through hole. A middle hole is provided on the top ring. A top plate is connected to the lower end of the top ring. A second cylinder is installed at the lower end of the membrane plate. The top plate extends laterally and is connected to the second cylinder. The second cylinder is used to drive the top plate to move up and down.

[0008] As a further embodiment of this utility model: the lower end face of the membrane plate is provided with a movable groove located on one side of the second through hole and connected to the second through hole, one side of the top plate extends into the movable groove, and a second push rod is provided on the second cylinder, the second push rod extends into the movable groove and is fixedly connected to the top plate.

[0009] As a further embodiment of this utility model: the top plate includes a lower ring corresponding to the top ring and a movable plate connected to one side of the lower ring, and the lower ring has a through hole corresponding to the central hole, and the movable plate extends into the movable groove and is fixedly connected to the second push rod.

[0010] As a further embodiment of this utility model: the upper end face of the top ring is flush with the bottom wall of the membrane groove, and the edge of the upper end face of the top ring has a rounded corner design.

[0011] As a further embodiment of this utility model: a bottom ring is provided at the bottom of the second through hole, and the bottom ring has a discharge hole corresponding to the middle hole;

[0012] The bottom ring is provided with a first guide sleeve, and the lower end of the lower ring is connected to a first guide rod, which is guided and connected to the first guide sleeve.

[0013] As a further embodiment of this utility model: a second guide sleeve is provided on the movable plate, and a second guide rod is connected to the top wall of the movable groove. The second guide rod is guided and connected to the second guide sleeve.

[0014] As a further embodiment of this utility model: a mounting plate is provided on one side of the membrane plate, a strip groove is provided on the mounting plate, a fixing bolt is provided on the mounting plate, the screw of the fixing bolt passes through the strip groove and is screwed to the membrane plate, and the nut of the fixing bolt abuts against the surface of the mounting plate.

[0015] Compared with the existing technology, the beneficial effects of this technical solution are as follows: the film plate is installed at the punching station of the bag making machine, and then the film bag is passed through the film groove. During punching, the first cylinder push rod drives the punching head in the first through hole to perform punching action. At the same time, the second cylinder drives the top plate to move up, and the top plate drives the top ring to perform an upward action, so that the film bag part on the top ring is straightened. While the film bag is straightened, the punching head punches the film bag on the central hole, so that the film bag is subjected to bidirectional punching force during punching, thereby improving the quality of the punched hole and avoiding defects such as unevenness and cracks at the edge of the hole, so as to ensure that the strength of the film bag is not affected.

[0016] The top plate connects to the second cylinder after being laterally displaced under the top ring, so that the installation position of the second cylinder is offset from the second through hole and the top ring, thereby preventing the waste generated after punching from being intercepted by the second cylinder.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the entire utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the membrane plate of this utility model;

[0022] Figure 4 This is a schematic diagram of the top plate of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the mounting plate of this utility model;

[0024] Figure 6 yes Figure 2 Enlarged schematic diagram of a local structure at point A;

[0025] The corresponding labels in the attached diagram are explained as follows:

[0026] 1. Membrane plate; 11. Membrane groove; 12. First through hole; 13. Second through hole; 14. Movable groove; 15. Second guide rod; 2. First cylinder; 21. First push rod; 3. Drilling head; 4. Top ring; 41. Middle hole; 5. Top plate; 51. Lower ring; 52. Movable plate; 53. Through hole; 54. First guide rod; 55. Second guide sleeve; 6. Second cylinder; 61. Second push rod; 7. Bottom ring; 71. Discharge hole; 72. First guide sleeve; 8. Mounting plate; 81. Strip groove; 82. Fixing bolt. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-6 A perforation mechanism for a breathable hole in a film bag includes a film plate 1, a film groove 11 formed on the film plate 1, a first through hole 12 communicating with the film groove 11 on the upper surface of the film plate 1, a perforation head 3 disposed in the first through hole 12, a first cylinder 2 mounted on the upper end of the film plate 1, the first cylinder 2 being used to drive the perforation head 3 to move up and down, and a first push rod 21 connected to the lower end of the first cylinder 2, the first push rod 21 being connected to the perforation head 3;

[0029] The lower end of the membrane plate 1 is provided with a second through hole 13 that communicates with the membrane groove 11. A top ring 4 is provided inside the second through hole 13. A central hole 41 is provided on the top ring 4. A top plate 5 is connected to the lower end of the top ring 4. A second cylinder 6 is installed at the lower end of the membrane plate 1. The top plate 5 extends laterally and is connected to the second cylinder 6. The second cylinder 6 is used to drive the top plate 5 to move up and down.

[0030] Specifically, the film plate 1 is installed at the punching station of the bag making machine, and then the film bag is passed through the film groove 11. During punching, the first cylinder 2 pushes the first push rod 21 to drive the punching head 3 in the first through hole 12 to perform punching action. At the same time, the second cylinder drives the top plate 5 to move upward, and the top plate 5 drives the top ring 4 to perform an upward pushing action, so that the film bag part on the top ring 4 is straightened. While the film bag is straightened, the punching head 3 punches the film bag on the central hole 41, so that the film bag is subjected to bidirectional punching force during punching, so as to improve the quality of the punched hole and avoid unevenness and cracks at the edge of the hole, so as to ensure that the strength of the film bag is not affected.

[0031] The top plate 5 connects to the second cylinder 6 after being laterally displaced under the top ring 4, so that the installation position of the second cylinder 6 is staggered from the second through hole and the top ring 4, thereby preventing the waste generated after punching from being intercepted by the second cylinder 6.

[0032] Based on the above embodiments, it is further proposed that the lower end face of the membrane plate 1 is provided with a movable groove 14 located on one side of the second through hole 13 and connected to the second through hole 13, and one side of the top plate 5 extends into the movable groove 14. The second cylinder 6 is provided with a second push rod 61, which extends into the movable groove 14 and is fixedly connected to the top plate 5.

[0033] Specifically, a movable groove 14 is opened at the lower end of the membrane plate 1, and the movable groove 14 is connected to the second through hole 13, so that the top plate 5 below the top ring 4 can extend from the second through hole 13 into the movable groove 14. Then, the second push rod 61 of the second cylinder 6 extends into the movable groove 14 and connects with the top plate 5. By starting the second cylinder 6 to make the second push rod extend and retract, the top plate 5 can be driven to move up and down, so as to drive the top ring 4. The upper end of the top plate 5 is reserved with space between it and the upper wall of the movable groove 14 for it to move upward.

[0034] Preferably, the top plate 5 includes a lower ring 51 corresponding to the top ring 4 and a movable plate 52 connected to one side of the lower ring 51, and the lower ring 51 has a through hole 53 corresponding to the central hole 41, and the movable plate 52 extends into the movable groove 14 and is fixedly connected to the second push rod 61.

[0035] Specifically, the top plate 5 consists of a lower ring 51 and a movable plate 52. The lower ring 51 is connected to the lower end of the top ring 4, and the through hole 53 corresponds to the middle hole 41 of the top ring 4 to avoid affecting the discharge of waste. The movable plate 52 is used to be fixedly connected to the second push rod 61 in the movable groove 14 of the extension column.

[0036] Preferably, the upper end face of the top ring 4 is flush with the bottom wall of the membrane groove 11, and the edge of the upper end face of the top ring 4 has a rounded corner design.

[0037] Specifically, the upper end face of the top ring 4 is designed to be flush with the bottom wall of the film passage groove 11. When the film is not punched, the top ring 4 affects the normal transportation of the film. However, by rounding the corners of the upper end face of the top ring 4, the film bag can be protected when the film bag is placed on the top ring 4, and the right-angled edge can be prevented from stretching the film bag excessively.

[0038] Furthermore, a bottom ring 7 is provided at the bottom of the second through hole 13, and the bottom ring 7 has a discharge hole 71 corresponding to the central hole 41;

[0039] The bottom ring 7 is provided with a first guide sleeve 72, and the lower end of the lower ring 51 is connected to a first guide rod 54. The first guide rod 54 is guided and connected to the first guide sleeve 72.

[0040] Specifically, by guiding the first guide rod 54 at the lower end of the lower ring 51 to the first guide sleeve 72 on the bottom ring 7, the lower ring 51 can remain vertical during the lifting and lowering movement, so as to avoid the top ring 4 tilting when it is pushed up, which would affect the punching quality. The discharge hole 71 opened on the bottom ring 7 can discharge the punching waste outward.

[0041] Furthermore, a second guide sleeve 55 is provided on the movable plate 52, and a second guide rod 15 is connected to the top wall of the movable groove 14. The second guide rod 15 is guided and connected to the second guide sleeve 55.

[0042] Specifically, the second guide rod 15 set in the movable groove 14 cooperates with the second guide sleeve 55 on the movable plate 52, which can also guide and restrict the movable plate 52, thereby enabling both ends of the movable plate 52 and the lower ring 51 to have a guiding movement effect, further improving the positional stability of the top ring 4.

[0043] Furthermore, a mounting plate 8 is provided on one side of the film-coating plate 1. The mounting plate 8 has a strip groove 81 and a fixing bolt 82. The screw of the fixing bolt 82 passes through the strip groove 81 and is screwed into the film-coating plate 1. The nut of the fixing bolt 82 abuts against the surface of the mounting plate 8, thus fixing the mounting plate 8 onto the bag-making machine. In use, the fixing bolt 82 is separated from the film-coating plate 1 by turning it. At this time, the punching position can be adjusted by moving the film-coating plate 1 on the mounting plate 8. After adjustment, the screw of the fixing bolt 82 is passed through the strip groove 81 and screwed back into the pre-drilled screw hole on the film-coating plate 1. The nut of the fixing bolt 82 then presses against the lower end face of the mounting plate 8, thereby fixing the position of the film-coating plate 1 and realizing the adjustment of the punching position.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A film bag vent hole punching mechanism characterized by comprising: The system includes a membrane plate (1), on which a membrane groove (11) is formed. A first through hole (12) communicating with the membrane groove (11) is formed on the upper surface of the membrane plate (1). A punching head (3) is provided in the first through hole (12). A first cylinder (2) is installed on the upper end of the membrane plate (1). The first cylinder (2) is used to drive the punching head (3) to move up and down. A first push rod (21) is connected to the lower end of the first cylinder (2). The first push rod (21) is connected to the punching head (3). The lower end of the membrane plate (1) is provided with a second through hole (13) that communicates with the membrane groove (11). A top ring (4) is provided inside the second through hole (13). A middle hole (41) is provided on the top ring (4). A top plate (5) is connected to the lower end of the top ring (4). A second cylinder (6) is installed at the lower end of the membrane plate (1). The top plate (5) extends laterally and is connected to the second cylinder (6). The second cylinder (6) is used to drive the top plate (5) to move up and down.

2. The film bag vent hole punching mechanism according to claim 1, wherein The lower end face of the membrane plate (1) is provided with a movable groove (14) located on one side of the second through hole (13) and connected to the second through hole (13). One side of the top plate (5) extends into the movable groove (14). The second cylinder (6) is provided with a second push rod (61). The second push rod (61) extends into the movable groove (14) and is fixedly connected to the top plate (5).

3. The film bag vent hole punching mechanism according to claim 2, wherein The top plate (5) includes a lower ring (51) corresponding to the top ring (4) and a movable plate (52) connected to one side of the lower ring (51). The lower ring (51) has a through hole (53) corresponding to the central hole (41). The movable plate (52) extends into the movable groove (14) and is fixedly connected to the second push rod (61).

4. The film bag vent hole punching mechanism according to claim 3, wherein The upper end face of the top ring (4) is flush with the bottom wall of the membrane groove (11), and the edge of the upper end face of the top ring (4) has a rounded corner design.

5. The film bag vent hole punching mechanism according to claim 4, wherein The bottom of the second through hole (13) is provided with a bottom ring (7), and the bottom ring (7) has a discharge hole (71) corresponding to the middle hole (41). The bottom ring (7) is provided with a first guide sleeve (72), and the lower end of the lower ring (51) is connected to a first guide rod (54). The first guide rod (54) and the first guide sleeve (72) are connected in a guiding fit.

6. The film bag vent hole punching mechanism according to claim 5, wherein The movable plate (52) is provided with a second guide sleeve (55), and the top wall of the movable groove (14) is connected with a second guide rod (15). The second guide rod (15) and the second guide sleeve (55) are connected in a guiding fit.

7. The film bag vent hole punching mechanism according to claim 1, wherein A mounting plate (8) is provided on one side of the membrane plate (1). A strip groove (81) is provided on the mounting plate (8). A fixing bolt (82) is provided on the mounting plate (8). The screw of the fixing bolt (82) passes through the strip groove (81) and is screwed to the membrane plate (1). The nut of the fixing bolt (82) abuts against the surface of the mounting plate (8).

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