A bag making machine folding mechanism

Abstract

This utility model relates to a folding mechanism for a bag making machine, including a frame, a base plate, a first vertical plate, and a second vertical plate, as well as a fixing rod, a guide unit, and a heating mechanism. The first vertical plate and the second vertical plate are connected to the same fixing rod on opposite sides. A transmission roller is rotatably mounted on the top of the first and second vertical plates. The fixing rod is spaced apart at the bottom of the transmission roller, and a V-shaped bracket is fixedly mounted on the fixing rod. The bottom of the V-shaped bracket is aligned with the guide unit. The heating mechanism is spaced apart on the left side of the guide unit. Using this technical solution, a flat bag is fed onto the V-shaped bracket by the conveyor roller, and then slides along the contour of the V-shaped bracket into the guide unit, thus completing the basic folding of the bag. The bag then enters the heating mechanism, where heating softens the newly folded edge, making it easier to shape and further enhancing the flatness of the fold, thereby completing the bag bending process.

Description

Technical Field

[0001] This utility model relates to the field of bag manufacturing technology, and in particular to a folding mechanism for a bag making machine. Background Technology

[0002] In today's booming packaging industry, various types of bags are widely used in many fields such as food, daily chemicals, and pharmaceuticals. Their production efficiency and quality are of paramount importance. As the core equipment for bag production, the bag making machine has a key functional module in its folding mechanism, which directly affects the bag forming effect and production efficiency.

[0003] Currently, some bag-making machines rely on simple mechanical pressure plates for folding. This method makes it difficult to accurately control the folding position and angle of the bag, resulting in uneven edges and poor flatness after folding, which seriously affects the appearance quality of the bag. Moreover, it often lacks shaping processes, and the folded bag edges are not shaped in time, making them prone to springback or misalignment during transmission. It still cannot completely solve the problems of unstable folding and low yield. Therefore, it is necessary to design a folding mechanism for bag-making machines. Utility Model Content

[0004] The purpose of this invention is to provide a folding mechanism for a bag making machine to solve the problems existing in the prior art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A folding mechanism for a bag-making machine includes a frame, the frame comprising a base plate, a first vertical plate, and a second vertical plate, the first vertical plate and the second vertical plate being respectively disposed at the rear ends of both sides of the base plate, and further comprising:

[0007] A fixed rod is provided, with the same fixed rod connected to the opposite sides of the first vertical plate and the second vertical rod. The same transmission roller is rotatably mounted on the top of the first vertical plate and the second vertical plate. The fixed rod is spaced apart at the bottom of the transmission roller. A V-shaped bracket is fixedly mounted on the fixed rod.

[0008] A guide unit is disposed on the top of the substrate, and the bottom of the V-shaped bracket is aligned with the guide unit;

[0009] The heating mechanism is disposed on the top of the substrate and spaced apart on the left side of the guide unit.

[0010] By adopting the above technical solution, the flat bag is conveyed to the V-shaped support by the conveyor roller, and then slides into the guide unit along the contour of the V-shaped support, thereby completing the basic folding of the bag. Then it enters the heating mechanism, where heating makes the newly folded bag edge easier to shape under the softening effect, further enhancing the flatness of the fold, thus completing the bending of the bag.

[0011] In a further embodiment, the V-shaped bracket includes a crossbeam and a V-shaped plate. The crossbeam is sleeved on a fixed rod, and the opening of the V-shaped plate is oriented upward. The two ends of the V-shaped plate are fixedly connected to the two ends of the crossbeam. The front-to-back width of the top of the V-shaped plate is consistent with the front-to-back width of the crossbeam, and the front-to-back width of the front end of the V-shaped plate increases sequentially from top to bottom.

[0012] By adopting the above technical solution, because the front and back widths of the V-shaped plate gradually increase from top to bottom, the left and right ends of the bag will gradually approach each other as they slide down along the two ends of the V-shaped plate until they reach the bottom of the V-shaped plate, thus completing the initial fold.

[0013] In a further embodiment, the guiding unit includes a first support plate, a second support plate, a first guide roller, and a second guide roller. The first support plate and the second support plate are respectively positioned at the top of the substrate. The first guide roller is spaced apart at the left end of the second guide roller. The front ends of both the first guide roller and the second guide roller are rotatably connected to the first support plate, and the rear ends of both the first guide roller and the second guide roller are rotatably connected to the second support plate.

[0014] By adopting the above technical solution, the bag that has been initially folded passes through the gap between the first guide roller and the second guide roller, thereby the first guide roller and the second guide roller roll the folded end to enhance the flatness of the fold.

[0015] In a further embodiment, the edges of both the V-shaped plate and the crossbeam are rounded.

[0016] By adopting the above technical solution, the bag slides down more smoothly, reducing friction and jamming, and making it less likely to be damaged.

[0017] In a further embodiment, the heating mechanism includes a third support plate, a fourth support plate, a crossbar, a first traction roller, a second traction roller, a third traction roller, and a heating plate. The third and fourth support plates are respectively positioned at the top of the substrate. The second traction roller is spaced apart at the left end of the first traction roller, and the third traction roller is spaced apart at the left end of the second traction roller. The second traction roller is spaced apart at the top of the first and second traction rollers. The front ends of the first, second, and third traction rollers are rotatably connected to the third support plate and the front ends of the first, second, and third traction rollers are rotatably connected to the fourth support plate. The crossbar is fixedly installed inside the third and fourth support plates. The right end of the heating plate is detachably installed at the front end of the crossbar. The bottom left end of the heating plate has an upward-facing receiving groove, in which a heating belt is fixedly installed. The bottom of the heating belt is in contact with the surface of the second traction roller.

[0018] By adopting the above technical solution, the bag coming out from the bottom of the guide unit passes through the top of the first traction roller, then reaches the bottom of the second traction roller, and finally exits from the top of the third traction roller, presenting an S-shaped sliding path.

[0019] In a further embodiment, a support frame is fixedly installed on the left side of the frame, and a control box is fixedly installed on the front side of the support frame. The control box is electrically connected to the heating element.

[0020] By adopting the above technical solution, operators can control the temperature of the heating belt and the working time, thereby ensuring that the bending effect of the bag is optimal.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. The flat bag is fed onto a V-shaped support by a conveyor roller, and then slides along the contour of the V-shaped support into the guide unit, thus completing the basic folding of the bag. Then it enters the heating mechanism, where the heating softens the newly folded edge, making it easier to shape and further enhancing the flatness of the fold, thus achieving the effect of completing the bending of the bag. Attached Figure Description

[0023] Figure 1 This is an overall schematic diagram of the present invention, showing the connection relationship of the folding mechanism of a bag making machine;

[0024] Figure 2 This is a structural schematic diagram illustrating the guide unit and heating mechanism of this utility model;

[0025] Figure 3 This is a structural schematic diagram of the heat-sealing plate used to illustrate this utility model.

[0026] In the diagram, 1. Frame; 11. Base plate; 12. First vertical plate; 13. Second vertical plate; 2. Fixed rod; 3. Drive roller; 4. V-shaped bracket; 41. Crossbeam; 42. V-shaped plate; 5. Guide unit; 51. First support plate; 52. Second support plate; 53. First guide roller; 54. Second guide roller; 6. Heating mechanism; 61. Third support plate; 62. Fourth support plate; 63. Crossbar; 64. First traction roller; 65. Second traction roller; 66. Third traction roller; 67. Heat sealing plate; 7. Control box; 8. Support frame; 9. Heating belt. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0029] Example 1:

[0030] like Figures 1-3 As shown, a bag-making machine folding mechanism includes a frame 1. The frame 1 includes a base plate 11, a first vertical plate 12, and a second vertical plate 13. The first vertical plate 12 and the second vertical plate 13 are respectively disposed on the rear ends of both sides of the base plate 11. It also includes a fixing rod 2, a guide unit 5, and a heating mechanism 6. The first vertical plate 12 and the second vertical plate 13 are connected to the same fixing rod 2 on opposite sides. The first vertical plate 12 and the second vertical plate 13 are rotatably mounted with the same transmission roller 3. The fixing rod 2 is spaced apart at the bottom end of the transmission roller 3. A V-shaped bracket 4 is fixedly mounted on the fixing rod 2. The guide unit 5 is disposed on the top of the base plate 11. The bottom of the V-shaped bracket 4 is aligned with the guide unit 5. The heating mechanism 6 is disposed on the top of the base plate 11. The heating mechanism 6 is spaced apart on the left side of the guide unit 5.

[0031] The V-shaped bracket 4 includes a crossbeam 41 and a V-shaped plate 42. The crossbeam 41 is sleeved on the fixed rod 2. The opening of the V-shaped plate 42 is oriented upwards. The two ends of the V-shaped plate 42 are fixedly connected to the two ends of the crossbeam 41. The front-to-back width of the top of the V-shaped plate 42 is consistent with the front-to-back width of the crossbeam 41. The front-to-back width of the front end of the V-shaped plate 42 increases from top to bottom. The guide unit 5 includes a first support plate 51, a second support plate 52, a first guide roller 53, and a second guide roller 54. The first support plate 51 and the second support plate 52 are respectively positioned on the front and back of the top of the base plate 11. The first guide roller 53 is spaced apart at the left end of the second guide roller 54. The front ends of both the first guide roller 53 and the second guide roller 54 are rotatably connected to the first support plate 51, and the rear ends of both the first guide roller 53 and the second guide roller 54 are rotatably connected to the second support plate 52. The edges of the V-shaped plate 42 and the crossbeam 41 are both rounded. The heating mechanism 6 includes a third support plate 61, a fourth support plate 62, a crossbar 63, a first traction roller 64, a second traction roller 65, a third traction roller 66, and a heating plate 67. The third support plate 61 and the fourth support plate 62 are respectively arranged at the front and rear ends. The second traction roller 65 is spaced apart at the left end of the first traction roller 64, and the third traction roller 66 is spaced apart at the left end of the second traction roller 65. The second traction roller 65 is spaced apart at the top ends of the first traction roller 64 and the second traction roller 65. The front ends of the first traction roller 64, the second traction roller 65 and the third traction roller 66 are all rotatably connected to the third support plate 61. The front ends of the first traction roller 64, the second traction roller 65 and the third traction roller 66 are all rotatably connected to the fourth support plate 62. The crossbar 63 is fixedly installed on the third support plate 61. Inside the fourth support plate 62, the bottom right end of the heating plate 67 is provided with an upward clearance groove. The front and rear ends of the clearance groove are completely open. The right end of the heating plate 67 is detachably installed at the front end of the crossbar 63. The bottom left end of the heating plate 67 is provided with an upward receiving groove. A heating belt 9 is fixedly installed in the receiving groove. The bottom of the heating belt is lower than the bottom of the heating plate, and the bottom of the heating belt is in contact with the surface of the second traction roller. A support frame 8 is fixedly installed on the left side of the frame 1. A control box 7 is fixedly installed on the front side of the support frame 8. The control box 7 and the heating belt 9 are electrically connected.

[0032] Specific implementation process: After the bag making machine starts, the flat bag is conveyed by the conveying device to the transmission roller 3 of the folding mechanism. Under the combined action of gravity and external pulling force, the bag slides from the transmission roller 3 onto the V-shaped bracket 4. Then, the bag slides down along the contour of the V-shaped bracket 4, so that the left and right edges of the bag begin to move closer together, gradually completing the folding process. The folded bag continues to slide down and enters the guide unit 5 set on the top of the base plate 11. The folded bag is subjected to the rolling pressure of the first guide roller 53 and the second guide roller 54 in the guide unit 5, which enhances the flatness of the fold. Then, the bag enters the heating mechanism 6 located to the left of the guide unit 5. Under the traction of the first traction roller 64, the second traction roller 65 and the third traction roller 66, the bag moves forward smoothly in an S-shaped path. When the bag moves to the position of the heating plate 67, the heating belt 9 in the bottom receiving groove at the left end of the heating plate 67 generates high temperature. Since the bottom of the heating belt 9 is in contact with the surface of the second traction roller 65, the folded edge of the bag is more easily shaped under the softening effect of the heating belt 9 when it passes through this point, further enhancing the flatness of the fold, which is beneficial to the next processing step.

[0033] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0034] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A folding mechanism for a bag-making machine, comprising a frame (1), the frame (1) comprising a base plate (11), a first vertical plate (12), and a second vertical plate (13), the first vertical plate (12) and the second vertical plate (13) being respectively disposed at the rear ends of both sides of the base plate (11), characterized in that, Also includes: The first vertical plate (12) and the second vertical plate are connected to the same fixed rod (2) on opposite sides. The first vertical plate (12) and the second vertical plate (13) are rotatably mounted with the same transmission roller (3). The fixed rod (2) is spaced apart at the bottom end of the transmission roller (3). A V-shaped bracket (4) is fixedly mounted on the fixed rod (2). A guide unit (5) is disposed on the top of the substrate (11), and the bottom of the V-shaped bracket (4) is aligned with the guide unit (5). The heating mechanism (6) is disposed on the top of the substrate (11) and is spaced apart on the left side of the guide unit (5).

2. The folding mechanism of a bag-making machine according to claim 1, characterized in that: The V-shaped bracket (4) includes a crossbeam (41) and a V-shaped plate (42). The crossbeam (41) is sleeved on the fixed rod (2). The opening of the V-shaped plate (42) is set upward. The two ends of the V-shaped plate (42) are fixedly connected to the two ends of the crossbeam (41). The front and rear width of the top of the V-shaped plate (42) is consistent with the front and rear width of the crossbeam (41). The front and rear width of the front end of the V-shaped plate (42) increases from top to bottom.

3. The folding mechanism of a bag-making machine according to claim 1, characterized in that: The guiding unit (5) includes a first support plate (51), a second support plate (52), a first guide roller (53), and a second guide roller (54). The first support plate (51) and the second support plate (52) are respectively positioned on the top of the base plate (11) at the front and rear. The first guide roller (53) is spaced apart at the left end of the second guide roller (54). The front ends of the first guide roller (53) and the second guide roller (54) are rotatably connected to the first support plate (51), and the rear ends of the first guide roller (53) and the second guide roller (54) are rotatably connected to the second support plate (52).

4. The folding mechanism of a bag making machine according to claim 2, characterized in that: The edges of the V-shaped plate (42) and the crossbeam (41) are both rounded.

5. The folding mechanism of a bag-making machine according to claim 1, characterized in that: The heating mechanism (6) includes a third support plate (61), a fourth support plate (62), a crossbar (63), a first traction roller (64), a second traction roller (65), a third traction roller (66), and a heating plate (67). The third support plate (61) and the fourth support plate (62) are respectively positioned at the top of the base plate (11). The second traction roller (65) is spaced apart at the left end of the first traction roller (64), and the third traction roller (66) is spaced apart at the left end of the second traction roller (65). The second traction roller (65) is spaced apart at the top ends of the first traction roller (64) and the second traction roller (65). The first traction roller (64)... The front ends of the second traction roller (65) and the third traction roller (66) are rotatably connected to the third support plate (61). The front ends of the first traction roller (64), the second traction roller (65) and the third traction roller (66) are rotatably connected to the fourth support plate (62). The crossbar (63) is fixedly installed inside the third support plate (61) and the fourth support plate (62). The right end of the heating plate (67) is detachably installed at the front end of the crossbar (63). The left end of the heating plate (67) is in contact with the surface of the second traction roller (65). The bottom of the left end of the heating plate (67) is provided with an upward receiving groove. A heating belt (9) is fixedly installed in the receiving groove.

6. The folding mechanism of a bag-making machine according to claim 1, characterized in that: A support frame (8) is fixedly installed on the left side of the frame (1), and a control box (7) is fixedly installed on the front side of the support frame (8). The control box (7) and the heating belt (9) are electrically connected.

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