A hot-cutting bag-making machine for plastic bag processing

Abstract

This utility model relates to the field of plastic bag technology, and provides a hot-cutting bag-making machine for plastic bag processing. It includes a base plate, a feeding assembly installed at the top and near the left end of the base plate, a tension control assembly installed at the left end of a support block, a traction assembly installed inside the support block, and a positioning assembly installed at the top of the support block in front of the traction assembly. A PLC controller, after obtaining data from a tension sensor, activates an electric push rod. The electric push rod changes the height of the first roller, thereby adjusting the film tension and ensuring neat and stable feeding. The PLC controller activates a first cylinder to move a connecting plate downwards. With the cooperation of a spring and a sliding rod, a slider moves downwards, causing the third roller to cooperate with the second roller to traction the film. This technical solution solves the technical problem in related technologies where the film is easily affected before hot cutting, leading to a high finished product loss rate.

Description

Technical Field

[0001] This utility model relates to the field of plastic bag technology, specifically to a hot-cutting bag-making machine for processing plastic bags. Background Technology

[0002] Plastic bags are bags made primarily of plastic and are essential items in people's daily lives. They are often used to hold other items and are widely used due to their advantages of being inexpensive, lightweight, large-capacity, and easy to store. During the production and processing of plastic bags, they need to be heat-cut. The plastic bags are heat-cut by a heated toothed cutter. The heat-cut plastic bags will not break apart and are easy to tear when used.

[0003] Bag making machines are machines that produce various plastic or other material packaging bags. Their processing range includes packaging bags of various sizes, thicknesses and specifications made of plastic or other materials. In the existing technology, hot-cut bag making machines are often used. The traction device has a significant impact on the finished product. When slippage occurs, it will result in the bag being too short. The traction device also affects the film tension. Excessive tension will cause the film to stretch, or insufficient tension will cause wrinkles, resulting in a high product loss rate. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a hot-cutting bag making machine for plastic bag processing, which solves the technical problem in related technologies that the film is easily affected before hot cutting, resulting in a high loss rate of finished products.

[0005] According to one aspect, at least one embodiment of the present invention provides a hot-cutting bag making machine for processing plastic bags, comprising: a base plate, a support block fixedly connected to the top of the base plate, a feeding component installed at the top of the base plate and near the left end, a tension control component installed at the left end of the support block, a circulation component installed at the front end of the support block, and a hot-cutting component installed on the circulation component; A traction component is provided, wherein the traction component is installed inside the support block, and a positioning component is installed at the top of the support block and in front of the traction component.

[0006] For example, in at least one embodiment of the present invention, a hot-cutting bag-making machine for processing plastic bags further includes: the feeding assembly includes a servo motor; the servo motor is fixedly connected to the top of the base plate and to the left of the support block; a rotating shaft is fixedly installed at the output end of the servo motor; a transmission assembly is fixedly installed on the rotating shaft; a first fixed plate is fixedly connected to the top of the base plate and to the rear side of the rotating shaft; the rear end of the rotating shaft is rotatably connected to the first fixed plate via a bearing; a second fixed plate is fixedly connected to the top of the base plate and near the left end; a driven rod is rotatably connected to the rear end of the second fixed plate via a bearing; the front end of the driven rod extends to the front end of the second fixed plate and is drivenly connected to the transmission assembly.

[0007] For example, in at least one embodiment of the present invention, a hot-cutting bag-making machine for processing plastic bags further includes: the tension control component, the tension control component including a support frame, an electric push rod fixedly connected to the top of the support frame, a support member fixedly connected to the output end of the electric push rod, a No. 1 roller rotatably connected inside the support member via a bearing, and a tension sensor fixedly connected to the front end of the support member.

[0008] For example, in at least one embodiment of the present invention, a hot-cutting bag-making machine for processing plastic bags is provided, which further includes: the traction component includes a square groove, the support block has a square groove inside, a support platform is fixedly connected to the bottom wall of the inner cavity of the square groove, a drive motor is fixedly connected to the top of the support platform, a rotating rod is fixedly installed at the output end of the drive motor, and a drive gear is fixedly connected to the rotating rod.

[0009] For example, in at least one embodiment of the present invention, a hot-cutting bag-making machine for processing plastic bags further includes: the positioning component includes a fixed frame; the fixed frame is fixedly connected to the top of the support block; a second roller is rotatably connected to the rear end of the fixed frame via a bearing; a driven gear is fixedly connected to the second roller; the driving gear and the driven gear are meshed; a first cylinder is fixedly connected to the top end of the inner cavity of the fixed frame; a connecting plate is fixedly connected to the output end of the first cylinder; a sliding rod is slidably connected inside the connecting plate; the lower end of the sliding rod extends below the connecting plate and is fixedly connected to a slider; the inside of the fixed frame is slidably connected to the slider via a guide block; a spring is fixedly connected to the center of the top end of the slider; and a third roller is rotatably connected to the rear end of the slider via a bearing.

[0010] For example, in at least one embodiment of the present invention, a hot-cutting bag-making machine for processing plastic bags is provided, which further includes: the circulation component includes a fixed box, the front end of the support block is fixedly connected to the fixed box, the front end of the fixed box is fixedly connected to a main shaft motor, the output end of the main shaft motor extends into the fixed box and is fixedly installed with a drive shaft, an elliptical block is fixedly connected to the drive shaft, a positioning frame is slidably connected inside the fixed box, and the bottom end of the positioning frame is tangent to the outer ring of the elliptical block.

[0011] For example, in at least one embodiment of the present invention, a hot-cutting bag-making machine for processing plastic bags is provided, which further includes: the hot-cutting component includes a second cylinder, the second cylinder is fixedly connected to the top of the positioning frame, the output end of the second cylinder extends into the interior of the positioning frame and is fixedly connected to a fixing member, a heating block is fixedly connected to the bottom wall of the inner cavity of the fixing member, a heat-sealing knife is fixedly connected to the bottom end of the fixing member, and a hot-cutting knife is fixedly connected to the bottom end of the fixing member and to the right of the heat-sealing knife.

[0012] For example, in at least one embodiment of the present invention, a hot-cutting bag-making machine for processing plastic bags further includes: a No. 3 fixing plate fixedly connected to the top of the support block and located on the left side of the traction assembly; a No. 4 roller rotatably connected to the rear end of the No. 3 fixing plate via a bearing; a bottom block fixedly connected to the center of the top of the support block; a No. 5 roller rotatably connected inside the bottom block via a bearing; an inclined groove opened at the top of the support block near the right end; and a collection box fixedly connected to the top of the bottom plate near the right end.

[0013] The beneficial effects of the embodiments of this utility model are as follows: This invention includes a tension adjustment component and a traction component, an electric push rod and a tension sensor. The PLC controller obtains data from the tension sensor, causing the electric push rod to change the height of the first roller, thereby changing the film tension and ensuring accurate traction length. A first cylinder and a driven gear are provided, and the transmission between the gears ensures the traction power source. The first cylinder and the spring work together to apply pressure to prevent the film from slipping during traction and to prevent affecting the bag yield. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a hot-cutting bag-making machine for processing plastic bags in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the overall external structure in the embodiment; Figure 3 for Figure 1 A schematic diagram of the traction component in the embodiment; Figure 4 for Figure 1 A schematic diagram of the structure of the loop component in the embodiment; Figure 5 for Figure 1 Enlarged view of point a in the embodiment; Figure 6 for Figure 3 Enlarged view of point b in the embodiment.

[0016] In the diagram: 1. Base plate; 2. Support block; 3. Feeding assembly; 31. Servo motor; 32. Rotating shaft; 33. Transmission assembly; 34. Fixed plate No. 1; 35. Fixed plate No. 2; 36. Driven rod; 4. Tension control assembly; 41. Support frame; 42. Electric push rod; 43. Support component; 44. Roller No. 1; 45. Tension sensor; 5. Traction assembly; 51. Square groove; 52. Support platform; 53. Drive motor; 54. Rotating rod; 55. Drive gear; 56. Driven gear; 57. Roller No. 2; 6. Positioning assembly 61. Fixing frame; 62. Cylinder No. 1; 63. Connecting plate; 64. Slide rod; 65. Spring; 66. Slider; 67. Roller No. 3; 7. Circulation assembly; 71. Fixing box; 72. Main spindle motor; 73. Drive shaft; 74. Elliptical block; 75. Positioning frame; 8. Hot cutting assembly; 81. Cylinder No. 2; 82. Fixing piece; 83. Heating block; 84. Heat sealing knife; 85. Hot cutting knife; 9. Fixing plate No. 3; 10. Roller No. 4; 11. Bottom block; 12. Roller No. 5; 13. Inclined groove; 14. Collection box. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0018] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-6 As shown, it illustrates a hot-cutting bag-making machine for processing plastic bags according to an embodiment of the present invention, comprising: a base plate 1, a support block 2 fixedly connected to the top of the base plate 1, a feeding component 3 installed at the top of the base plate 1 and near the left end, a tension control component 4 installed at the left end of the support block 2, a circulation component 7 installed at the front end of the support block 2, and a hot-cutting component 8 installed on the circulation component 7. The traction component 5 is installed inside the support block 2. The positioning component 6 is installed at the top of the support block 2 and in front of the traction component 5. The third fixing plate 9 is fixedly connected to the top of the support block 2 and to the left of the traction component 5. The rear end of the third fixing plate 9 is rotatably connected to the fourth roller 10 through a bearing. The bottom block 11 is fixedly connected to the center of the top of the support block 2. The fifth roller 12 is rotatably connected inside the bottom block 11 through a bearing. The top of the support block 2 and near the right end has an inclined groove 13. The top of the bottom plate 1 and near the right end has a collection box 14 fixedly connected.

[0024] For example, such as Figure 5As shown, the feeding assembly 3 includes a servo motor 31. The servo motor 31 is fixedly connected to the top of the base plate 1 and to the left of the support block 2. A rotating shaft 32 is fixedly installed at the output end of the servo motor 31. A transmission assembly 33 is fixedly installed on the rotating shaft 32. A first fixed plate 34 is fixedly connected to the top of the base plate 1 and to the rear of the rotating shaft 32. The rear end of the rotating shaft 32 is rotatably connected to the first fixed plate 34 through a bearing. A second fixed plate 35 is fixedly connected to the top of the base plate 1 and near the left end. A driven rod 36 is rotatably connected to the rear end of the second fixed plate 35 through a bearing. The front end of the driven rod 36 extends to the front end of the second fixed plate 35 and is drivenly connected to the transmission assembly 33.

[0025] In some examples, the purpose of providing a feeding component 3 is to facilitate the operation of the circulation component 7, cutting the film to a suitable length. When the bag making machine is working, the feeding component 3 works synchronously. The PLC controller starts the servo motor 31 to make the rotating shaft 32 rotate. The rotating shaft 32 drives the transmission group 33 to make the driven rod 36 rotate. The driven rod 36 drives the raw material to be conveyed. The transmission group 33 consists of multiple gears and transmission belts. By controlling the transmission ratio between the gears, the needs of low-speed, high-torque equipment are met. At the same time, it works with the circulation component 7 to precisely control the feeding speed.

[0026] For example, such as Figure 1 As shown, the tension control component 4 includes a support frame 41, an electric push rod 42 is fixedly connected to the top of the support frame 41, a support member 43 is fixedly connected to the output end of the electric push rod 42, a No. 1 roller 44 is rotatably connected inside the support member 43 through a bearing, and a tension sensor 45 is fixedly connected to the front end of the support member 43.

[0027] In some examples, the purpose of setting tension control component 4 is to maintain stable tension of the film. When feeding component 3 is working, tension control component 4 works synchronously. The film is fed into traction component 5 through the limiting and steering of roller 1 44 and roller 4 10. After the PLC controller obtains data through tension sensor 45, it starts electric push rod 42. Electric push rod 42 changes the height of roller 1 44, thereby adjusting film tension, ensuring neat and stable feeding, preventing the film from being too loose or too tight, avoiding film stretching due to excessive tension, or wrinkling due to insufficient tension, and ensuring accurate traction length.

[0028] For example, such as Figure 3As shown, the traction component 5 includes a square groove 51. A square groove 51 is formed inside the support block 2. A support platform 52 is fixedly connected to the bottom wall of the inner cavity of the square groove 51. A drive motor 53 is fixedly connected to the top of the support platform 52. A rotating rod 54 is fixedly installed at the output end of the drive motor 53. A drive gear 55 is fixedly connected to the rotating rod 54. The positioning component 6 includes a fixing frame 61. The fixing frame 61 is fixedly connected to the top of the support block 2. A second roller 57 is rotatably connected to the rear end of the fixing frame 61 via a bearing. A [missing information - likely a gear or component] is fixedly connected to the second roller 57. Driven gear 56 and driving gear 55 are meshed with driven gear 56. Cylinder 62 is fixedly connected to the top of the inner cavity of fixed frame 61. Connecting plate 63 is fixedly connected to the output end of cylinder 62. Sliding rod 64 is slidably connected inside connecting plate 63. The lower end of sliding rod 64 extends to the bottom of connecting plate 63 and is fixedly connected to slider 66. Sliding connection between fixed frame 61 and slider 66 is achieved through guide block. Spring 65 is fixedly connected to the center of top of slider 66. No. 3 roller 67 is rotatably connected to the rear end of slider 66 through bearing.

[0029] In some examples, the purpose of the traction component 5 is to stably transport the film, and the purpose of the positioning component 6 is to cooperate with the traction component 5 to firmly clamp the film. When the film is transported, the traction component 5 and the positioning component 6 work, the PLC controller starts the drive motor 53, the drive motor 53 drives the drive gear 55 to rotate via the rotating rod 54, and the drive gear 55 drives the driven gear 56 to rotate the second roller 57. The drive motor 53 is equipped with a high-precision encoder, which can accurately feedback the rotor position, realizing precise position control and speed control. By controlling the speed of the drive motor 53 in conjunction with the operation of the feeding assembly 3 and the hot cutting assembly 8, it is suitable for continuous production, realizing continuous and uniform film conveying, ensuring that each bag is the same size. The PLC controller starts the first cylinder 62 to drive the connecting plate 63 to move down. With the cooperation of the spring 65 and the slide bar 64, the slider 66 moves down. The slider 66 drives the third roller 67 to cooperate with the second roller 57 to achieve the traction of the film. The rollers are made of rubber material, and with the adjustable pressure of the first cylinder 62 and the spring 65, pressure is applied to ensure that the film is firmly clamped and to prevent slippage during traction.

[0030] For example, such as Figure 4 As shown, the circulation component 7 includes a fixed box 71. The fixed box 71 is fixedly connected to the front end of the support block 2. The main spindle motor 72 is fixedly connected to the front end of the fixed box 71. The output end of the main spindle motor 72 extends into the fixed box 71 and is fixedly installed with a drive shaft 73. An elliptical block 74 is fixedly connected to the drive shaft 73. A positioning frame 75 is slidably connected inside the fixed box 71. The bottom end of the positioning frame 75 is tangent to the outer ring of the elliptical block 74.

[0031] In some examples, the purpose of setting up the circulation component 7 is to cooperate with the hot cutting component 8 to perform periodic circulation. The PLC controller starts the spindle motor 72, which drives the drive shaft 73 to make the elliptical block 74 rotate. The positioning frame 75 is tangent to the outer ring of the elliptical block 74 by gravity. As the elliptical block 74 rotates, the positioning frame 75 performs cyclic reciprocating motion, which cooperates with the hot cutting component 8 to achieve the separation of the film.

[0032] For example, such as Figure 4 As shown, the hot cutting assembly 8 includes a second cylinder 81. The second cylinder 81 is fixedly connected to the top of the positioning frame 75. The output end of the second cylinder 81 extends into the interior of the positioning frame 75 and is fixedly connected to a fixing member 82. A heating block 83 is fixedly connected to the bottom wall of the inner cavity of the fixing member 82. A heat sealing knife 84 is fixedly connected to the bottom end of the fixing member 82. A hot cutting knife 85 is fixedly connected to the bottom end of the fixing member 82 and to the right of the heat sealing knife 84.

[0033] In some examples, the purpose of the hot-cutting assembly 8 is to separate the film. The PLC controller starts the second cylinder 81 to make the fixing part 82 reach the appropriate position, thereby facilitating the operation of the circulation assembly 7. The PLC controller starts the electric heating wire inside the heating block 83 to heat the heat sealing knife 84 and the hot cutting knife 85. The film is pulled to the bottom of the heat sealing knife 84. The heat sealing knife 84 descends, first heating and sealing the bag opening, and then cutting and separating it into individual bags simultaneously or with a delay by the hot cutting knife 85. Finally, the bags are sent into the collection box 14 by the traction assembly 5.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A heat cutting bag making machine for processing plastic bags, characterized by, include: A base plate (1) is fixedly connected to a support block (2) at its top end. A feeding assembly (3) is installed at the top end of the base plate (1) and near its left end. A tension control assembly (4) is installed at the left end of the support block (2). A circulation assembly (7) is installed at the front end of the support block (2). A hot cutting assembly (8) is installed on the circulation assembly (7). The traction component (5) is installed inside the support block (2), and a positioning component (6) is installed at the top of the support block (2) and in front of the traction component (5).

2. The plastic bag processing hot cutting bag making machine according to claim 1, characterized in that, The feeding assembly (3) includes a servo motor (31). The servo motor (31) is fixedly connected to the top of the base plate (1) and to the left of the support block (2). A rotating shaft (32) is fixedly installed at the output end of the servo motor (31). A transmission group (33) is fixedly installed on the rotating shaft (32). A first fixed plate (34) is fixedly connected to the top of the base plate (1) and to the rear side of the rotating shaft (32). The rear end of the rotating shaft (32) is rotatably connected to the first fixed plate (34) through a bearing. A second fixed plate (35) is fixedly connected to the top of the base plate (1) and near the left end. A driven rod (36) is rotatably connected to the rear end of the second fixed plate (35) through a bearing. The front end of the driven rod (36) extends to the front end of the second fixed plate (35) and is drivenly connected to the transmission group (33).

3. The plastic bag processing hot cutting bag making machine according to claim 1, characterized in that, The tension control assembly (4) includes a support frame (41), an electric push rod (42) is fixedly connected to the top of the support frame (41), a support member (43) is fixedly connected to the output end of the electric push rod (42), a No. 1 roller (44) is rotatably connected inside the support member (43) through a bearing, and a tension sensor (45) is fixedly connected to the front end of the support member (43).

4. The plastic bag processing hot cutting bag making machine according to claim 1, characterized in that, The traction assembly (5) includes a square groove (51). The support block (2) has a square groove (51) inside. A support platform (52) is fixedly connected to the bottom wall of the inner cavity of the square groove (51). A drive motor (53) is fixedly connected to the top of the support platform (52). A rotating rod (54) is fixedly installed at the output end of the drive motor (53). An active gear (55) is fixedly connected to the rotating rod (54).

5. The plastic bag processing hot cutting bag making machine according to claim 4, characterized in that, The positioning component (6) includes a fixed frame (61). The fixed frame (61) is fixedly connected to the top of the support block (2). The rear end of the fixed frame (61) is rotatably connected to a second roller (57) via a bearing. A driven gear (56) is fixedly connected to the second roller (57). The driving gear (55) and the driven gear (56) are meshed. A cylinder (62) is fixedly connected to the top of the inner cavity of the fixed frame (61). A connecting plate (63) is fixedly connected to the output end of the cylinder (62). A sliding rod (64) is slidably connected inside the connecting plate (63). The lower end of the sliding rod (64) extends to the bottom of the connecting plate (63) and is fixedly connected to a slider (66). The fixed frame (61) is slidably connected to the slider (66) via a guide block. A spring (65) is fixedly connected to the center of the top of the slider (66). The rear end of the slider (66) is rotatably connected to a third roller (67) via a bearing.

6. The plastic bag processing hot cutting bag making machine according to claim 1, characterized in that, The circulation component (7) includes a fixed box (71), the front end of the support block (2) is fixedly connected to the fixed box (71), the front end of the fixed box (71) is fixedly connected to the main spindle motor (72), the output end of the main spindle motor (72) extends into the fixed box (71) and is fixedly installed with a drive shaft (73), an elliptical block (74) is fixedly connected to the drive shaft (73), and a positioning frame (75) is slidably connected inside the fixed box (71), the bottom end of the positioning frame (75) is tangent to the outer ring of the elliptical block (74).

7. The plastic bag processing hot cutting bag making machine according to claim 6, characterized in that, The hot cutting assembly (8) includes a second cylinder (81). The second cylinder (81) is fixedly connected to the top of the positioning frame (75). The output end of the second cylinder (81) extends into the interior of the positioning frame (75) and is fixedly connected to a fixing member (82). A heating block (83) is fixedly connected to the bottom wall of the inner cavity of the fixing member (82). A heat sealing knife (84) is fixedly connected to the bottom end of the fixing member (82). A hot cutting knife (85) is fixedly connected to the bottom end of the fixing member (82) and to the right of the heat sealing knife (84).

8. The plastic bag processing hot cutting bag making machine according to claim 1, characterized in that, The support block (2) is fixedly connected to the top of the support block (2) and to the left of the traction assembly (5) with a No. 3 fixing plate (9). The rear end of the No. 3 fixing plate (9) is rotatably connected to the No. 4 roller (10) via a bearing. The support block (2) is fixedly connected to the center of the top of the support block (2). The bottom block (11) is rotatably connected to the No. 5 roller (12) via a bearing inside. The support block (2) is provided with a sloping groove (13) at the top of the support block (2) and near the right end. The bottom plate (1) is fixedly connected to the top of the bottom plate (1) and near the right end with a collection box (14).

Images