Rope threading bag processing equipment

Abstract

The utility model discloses a kind of rope-penetrating bag processing equipment, including bag mouth flanging device, punching device, hand rope leading-in device and heat sealing device in order along bag body conveying direction;Leading-in component includes upper guide plate, lower guide plate and first support plate, the first support plate is arranged between upper guide plate and lower guide plate, upper guide plate and lower guide plate correspond, and the end of both towards inside is connected with first support plate, the end of both towards outside has first material gap between first support plate, upper guide plate and lower guide plate are all provided with guide line hole, and the end of both towards inside is provided with leading-in recess. Tube material film realizes bag mouth flanging and bag mouth cutting by bag mouth flanging device, then enters punching device and realizes bag mouth punching, after punching, enter hand rope leading-in station, two hand ropes are respectively led into the bag mouth flanging of upper layer film and lower layer film by upper guide plate and lower guide plate respectively, then enter heat sealing station and carry out longitudinal sealing to bag mouth flanging part, form hand rope cavity.

Description

Technical Field

[0001] This utility model relates to the field of bag making machines, specifically a rope-threading bag processing equipment. Background Technology

[0002] Drawstring garbage bags offer convenience to users due to their portability, pull-tab design, and drawstring closure, resulting in high market demand. The processing difficulty of these drawstring garbage bags compared to traditional bag-making machines lies in threading the drawstring at the bag opening. Patent CN 112606484B, entitled "A Processing Technology and Production Equipment for Drawstring Bags," discloses a processing technology for drawstring bags, achieving automated production. This patent uses a folded film, and its drawstring bag processing technology includes the following steps: 1) folding the bag opening; 2) punching holes at the bag opening; 3) reversing the fold and resetting; 4) opening a single layer; 5) threading the drawstring; 6) resetting the upper film; 7) forming the drawstring cavity; and 8) forming the bag body. The process involves many steps and a complex equipment structure. Furthermore, the upper film requires two folds, increasing the probability of upper film displacement and causing misalignment of the holes on the upper and lower films, thus affecting product quality. Utility Model Content

[0003] In view of the technical problems existing in the background art, the technical problem solved by this utility model is to provide a drawstring bag processing equipment that is easier to process and has better bag making effect.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This type of drawstring bag processing equipment is characterized by including a bag opening forming mechanism and a handle rope guiding device.

[0005] The bag opening forming mechanism includes a bag opening folding device, a punching device, and a heat sealing device, which are arranged sequentially along the bag body conveying direction.

[0006] The carrying rope guiding device includes a traction component and a guiding component.

[0007] The traction component is located on the side of the frame. The traction component includes a traction roller and several guide rollers. The traction roller is arranged laterally, and the guide rollers include an upper guide roller and a lower guide roller arranged longitudinally.

[0008] The infeed component includes an upper guide plate, a lower guide plate, and a first support plate. The first support plate is disposed between the upper and lower guide plates, which are vertically aligned. The inward-facing ends of the upper and lower guide plates are connected to the first support plate, while the outward-facing ends have a first material passage gap with the first support plate. Both the upper and lower guide plates are provided with guide wire holes, and their inward-facing ends are provided with infeed grooves. The guide wire holes are inclined at 45 degrees. Compared with the prior art, this utility model eliminates the processes of single-layer opening and upper film repositioning, avoiding the problem of upper film displacement and improving bag-making quality.

[0009] This utility model uses tubular film. The tubular film is folded and cut at the bag opening by a bag opening folding device, and then enters a punching device to punch holes at the bag opening. After punching, it enters the handle rope guiding station. Two handle ropes are respectively guided into the bag opening folding edge of the upper and lower layers of film by the upper guide plate and the lower guide plate, respectively. Then, it enters the heat sealing station to longitudinally seal the bag opening folding edge to form a handle rope cavity.

[0010] Preferably, the carrying rope enters through the first material feeding gap and sequentially passes around the inlet groove and through the guide groove. Alternatively, the carrying rope enters from the side of the frame, is conveyed laterally, then through the guide groove, and finally becomes conveyed longitudinally, aligning with the bag conveying direction.

[0011] Preferably, the carrying rope guiding device further includes a flattening component, which is located in front of the guiding component. The flattening component includes an upper partition plate, a lower partition plate, and a second support plate. The second support plate is positioned between the upper and lower partition plates, which are vertically aligned. The inward-facing ends of the upper and lower partition plates are connected to the second support plate, and the outward-facing ends of the upper and lower partition plates have a second material passage gap with the second support plate. Flattening feet extend outward from the outward-facing ends of the upper and lower partition plates, respectively. The carrying rope passes sequentially around the flattening feet. When the carrying rope transitions from horizontal to vertical transport, it is prone to wrinkling. The flattening feet flatten the carrying rope, making the bag fit snugly and facilitating subsequent side sealing and winding operations.

[0012] Preferably, the bag opening folding device includes an upper guide roller, a lower guide roller, a folding plate, and a cutter. The bag body passes sequentially through the upper guide roller, the folding plate, the cutter, and the lower guide roller. The folding plate and the cutter are positioned between the upper and lower guide rollers. The folding plate is upright with an arc-shaped top, and the cutter is positioned below the folding plate. The folding plate is aligned with the side folding edge of the tubular material, causing the side folding edge to fold inward, forming the inner folds of the upper and lower bag openings. The cutter cuts along the side folding edge to form the bag opening.

[0013] Preferably, the heat-sealing device includes an upper heat-sealing blade, a heat-sealing partition, and a lower heat-sealing blade, which move up and down relative to the heat-sealing partition. The upper and lower heat-sealing blades respectively seal the inwardly folded portions of the upper and lower bag openings longitudinally, forming cavities for the upper and lower handles.

[0014] Preferably, the heat sealing device is further provided with a side sealing point breaking mechanism, a longitudinal folding mechanism and a winding mechanism in front of it.

[0015] Preferably, the edge sealing and point-breaking mechanism includes a heat-sealing knife and a point-breaking knife that move up and down. The heat-sealing knife and the point-breaking knife are arranged horizontally. The heat-sealing knife is provided with a mounting groove for inserting the point-breaking knife. The front and rear sides of the point-breaking knife are the front and rear cutting edges of the heat-sealing knife, respectively. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the bag opening folding device of this utility model.

[0018] Figure 3 This is a schematic diagram of the hand-carrying rope guiding device of this utility model.

[0019] Figure 4 This is a schematic diagram of the inlet component of this utility model.

[0020] Figure 5 This is a schematic diagram of the heat sealing device of this utility model.

[0021] Figure 6 This is a cross-sectional view of the edge sealing point breaking mechanism of this utility model.

[0022] Figure 7 Import a cross-sectional view of the handle rope for the roll material.

[0023] Reference numerals: 1. Bag opening folding device; 11. Folding plate; 12. Cutter; 2. Punching device; 3. Inlet component; 31. Traction roller; 32. Guide roller; 33. First support plate; 34. Upper guide plate; 35. Lower guide plate; 36. Inlet groove; 37. Guide groove; 38. First material passage gap; 4. Flattening component; 41. Second support plate; 42. Upper partition plate; 43. Lower partition plate; 44. Second material passage gap; 4 5. Flattening support legs; 5. Heat sealing device; 51. Upper heat sealing knife; 52. Heat sealing partition; 53. Lower heat sealing knife; 6. Side seal break device; 61. Heat sealing knife; 62. Break knife; 63. Mounting groove; 7. Longitudinal folding mechanism; 8. Winding mechanism; 9. Roll material; 91. Upper film; 92. Upper carrying rope; 93. Upper bag opening inward fold; 94. Lower film; 95. Lower carrying rope; 96. Lower bag opening inward fold; 97. Side fold. Detailed Implementation

[0024] The following describes the embodiments and related details and working principles of this utility model with reference to the accompanying drawings. This type of drawstring bag processing equipment includes a bag opening forming mechanism, a handle rope guiding device, a side sealing and breaking mechanism, a longitudinal folding mechanism 7, and a winding mechanism 8. The bag opening forming mechanism includes a bag opening folding device 1, a punching device 2, and a heat sealing device 5. The bag opening folding device 1, punching device 2, handle rope guiding device, heat sealing device 5, side sealing and breaking mechanism, longitudinal folding mechanism 7, and winding mechanism 8 are arranged sequentially along the bag body conveying direction. The film roll used in this utility model is a cylindrical material, that is, the roll 9 is cylindrical with closed sides, and the bag body conveying direction is the same as the roll 9 conveying direction.

[0025] The bag opening folding device 1 includes an upper guide roller 32, a lower guide roller 32, a folding plate 11, and a cutter 12. The bag body passes sequentially through the upper guide roller 32, the folding plate 11, the cutter 12, and the lower guide roller 32. Here, the bag body is the film roll. The folding plate 11 and the cutter 12 are positioned between the upper guide roller 32 and the lower guide roller 32. The folding plate 11 is vertically positioned with an arc-shaped top. The folding plate 11 is aligned with one side folding edge 97 of the roll, causing this side folding edge to fold inward into the roll to form upper and lower bag opening inward folds 96. The upper and lower bag opening inward folds 96 are based on the roll being horizontal. In the roll being vertical, the bag opening inward folds should be the front and rear bag opening inward folds. For ease of description, this embodiment is named based on the roll being horizontal. See appendix. Figure 7 The upper and lower bag opening inward folds 96 are located between the two layers of roll material. The upper bag opening inward fold 93 and the upper film 91 are used to accommodate the upper handle rope 92, and the lower bag opening inward fold 96 and the lower film 94 are used to accommodate the lower handle rope 95. The cutter 12 is located below the folding plate 11. After the roll material is folded inward, it passes through the cutter 12. The cutter 12 cuts along the side fold edge of the inward fold, separating the connected upper film 91 and lower film 94 to form the bag opening, while the other side of the roll material becomes the bag bottom.

[0026] The punching device 2 is existing technology, which includes a punching knife that moves up and down. After the rolled material is folded and cut at the bag opening, it enters the longitudinal conveyor through the lower guide roller 32. The punching knife punches holes at the bag opening to form a notch for the lifting handle.

[0027] The hand rope guiding device includes a traction component and a guiding component 3. The traction component is located on the side of the frame and includes a traction roller 31 and several guide rollers 32. The traction roller 31 is arranged laterally, and the guide rollers 32 include an upper guide roller 32 and a lower guide roller 32 arranged longitudinally. The guiding component 3 includes an upper guide plate 34, a lower guide plate 35, and a first support plate 33. The first support plate 33 is located between the upper guide plate 34 and the lower guide plate 35. The upper guide plate 34 and the lower guide plate 35 are vertically aligned, and their inward-facing ends are connected to the first support plate 33. Their outward-facing ends have a first material passage gap 38 with the first support plate 33. In the figure, the hand rope guiding device is located on the left side of the frame. The right ends of the upper guide plate 34 and the lower guide plate 35 are connected to the first support plate 33, and their left ends have a first material passage gap 38 with the first support plate 33. Both the upper guide plate 34 and the lower guide plate 35 are provided with guide wire holes, and both have an inlet groove 36 at their right ends. The guide wire holes are inclined at 45 degrees. After the roll material is punched, it enters the handle rope inlet station. The upper film 91 and the inner fold of the upper bag opening 93 are above and below the upper guide plate 34, respectively, while the lower film 94 and the inner fold of the lower bag opening 96 are below and above the lower guide plate 35, respectively. The upper handle rope 92 and the lower handle rope 95 are conveyed forward by the traction roller 31. They change from longitudinal to transverse through the upper guide roller 32 and the lower guide roller 32, respectively, and enter from their respective first material passage gaps 38. The upper handle rope 92 bypasses the inlet groove 36 of the upper guide plate 34 and exits from the upper guide plate. The guide groove 37 passes through the top of the upper guide plate 34, enters the lower part of the upper guide plate 34 and is sandwiched between the upper layer and the inner fold of the upper bag opening 93. The guide groove 37, which is set at a 45-degree angle, turns the horizontally conveyed handle rope into a vertically conveyed one. Similarly, the lower handle rope 95 passes around the guide groove 36 of the lower guide plate 35 and enters the guide groove 37 from the bottom of the lower guide plate 35, enters the upper part of the lower guide plate 35 and is sandwiched between the lower layer and the inner fold of the lower bag opening 96. This completes the introduction of the handle rope, and handle ropes are provided on both the upper and lower layers of the bag opening.

[0028] Because the carrying rope changes 90 degrees from horizontal to vertical, it is prone to wrinkling. To solve this problem, the carrying rope guiding device also includes a flattening component 4, which is located in front of the guiding component 3. The flattening component 4 includes an upper partition plate 42, a lower partition plate 43, and a second support plate 41. The second support plate 41 is disposed between the upper partition plate 42 and the lower partition plate 43. The upper partition plate 42 and the lower partition plate 43 are vertically aligned. The inner ends of the upper partition plate 42 and the lower partition plate 43 are connected to the second support plate 41, and the outer ends of the upper partition plate 42 and the lower partition plate 43 have a second material passage gap 44 between them. The outer ends of the upper partition plate 42 and the lower partition plate 43 extend outward with flattening legs 45. That is, flattening legs 45 extend from the left side of the upper partition plate 42 and the lower partition plate 43. The upper partition plate 42 and the lower partition plate 43 are each provided with at least two flattening legs 45. The carrying rope passes around the flattening legs 45 in sequence. The flattened state of the carrying rope is kept taut with the flattening legs 45. During the conveying of the rolled material and the carrying rope, the flattening legs 45 keep the carrying rope flat, making the bag with the carrying rope fit snugly, which is more conducive to subsequent side sealing and winding operations.

[0029] The heat-sealing device 5 includes an upper heat-sealing blade 6151, a heat-sealing partition 52, and a lower heat-sealing blade 6153. The upper heat-sealing blade 6151 and the lower heat-sealing blade 6153 move up and down relative to the heat-sealing partition 52. The heat-sealing partition 52 separates the upper film 91 and the upper bag opening inward fold 93 from the lower film 94 and the lower bag opening inward fold 96 vertically. The upper heat-sealing blade 6151 and the lower heat-sealing blade 6153 press against the heat-sealing partition 52, thereby longitudinally sealing the upper film 91 and the upper bag opening inward fold 93, and the lower film 94 and the lower bag opening inward fold 96, respectively forming the upper handle rope 92 cavity and the lower handle rope 95 cavity.

[0030] The edge sealing and point-breaking mechanism includes a heat-sealing knife 61 and a point-breaking knife 62 that move up and down. The heat-sealing knife 61 and the point-breaking knife 62 are arranged laterally. The heat-sealing knife 61 is provided with a mounting groove 63 for inserting the point-breaking knife 62. The front and rear sides of the point-breaking knife 62 are the front and rear blades of the heat-sealing knife 61, respectively. A single transverse edge sealing of the roll material forms two edge sealing lines and one point-breaking line. The point-breaking line is located between the two edge sealing lines, which are the sealing edges of the front and rear bags, respectively.

[0031] The longitudinal folding mechanism 7 folds the bag body longitudinally after the edge seal is broken, shortening the width and making the garbage bag roll easier to store, sell, and use after rolling. The longitudinal folding mechanism 7 is existing technology and can use a triangular plate for folding.

[0032] The working principle of the preferred embodiment is further explained below with reference to the accompanying drawings: The film roll first enters the bag opening folding station. The film roll passes sequentially through the upper guide roller 32, the folding plate 11, the cutter 12, and the lower guide roller 32. The side folding edge on the left side of the roll is folded inward to form the upper bag opening inner fold 93 and the lower bag opening inner fold 96. The cutter 12 cuts along the side folding edge of the inner fold, separating the connected upper film 91 and lower film 94 to form the bag opening. The right side of the roll is the bag bottom. Then the roll enters the punching station, where the punching cutter moves down to form a notch for the carrying handle at the bag opening. Then the rolled material enters the handle guide station. The handle enters laterally from the left. The upper handle 92 bypasses the guide groove 36 of the upper guide plate 34 and passes through the guide groove 37 from above the upper guide plate 34. It enters below the upper guide plate 34 and is sandwiched between the upper layer and the inner fold of the upper bag opening 93. The guide groove 37, set at a 45-degree angle, turns the laterally conveying handle into a longitudinally conveying one. The lower handle 95 bypasses the guide groove 36 of the lower guide plate 35 and passes through the guide groove 37 from below the lower guide plate 35. It enters above the lower guide plate 35 and is sandwiched between the lower layer and the inner fold of the lower bag opening 96. The bag opening... Both the upper and lower layers are equipped with carrying ropes; then the upper carrying rope 92 and the lower carrying rope 95 pass around the two flattening support legs 45 in sequence, while the upper film 91 and the lower film 94 pass over the upper partition plate 42 and the lower partition plate 43 respectively. The carrying ropes are unfolded by the flattening support legs 45, and the resulting carrying ropes and rolls of material enter the longitudinal sealing station. The upper heat sealing knife 6151 and the lower heat sealing knife 6153 move relative to the heat sealing partition plate 52, so that the upper film 91 is longitudinally sealed with the upper bag opening inner fold 93 and the lower film 94 is longitudinally sealed with the lower bag opening inner fold 96, forming the upper carrying rope 92 cavity and the lower carrying rope 95 cavity respectively. After longitudinal heat sealing, the material enters the side sealing and breaking station. The heat sealing knife 61 and the breaking knife 62 move down to form two side sealing lines and one breaking line on the roll. The breaking line is between the two side sealing lines, and the handle is sealed to the side of the bag. The roll after the side sealing and breaking becomes a continuous drawstring bag. The breaking line keeps the bag connected. When in use, it is torn at the breaking line to become an independent bag. The continuous drawstring bag is then longitudinally folded by the longitudinal folding mechanism 7 to shorten its width, and finally wound up.

Claims

1. A device for processing drawstring bags, characterized in that: It includes a bag opening forming mechanism and a handle guide device. The bag opening forming mechanism includes a bag opening folding device, a punching device, and a heat sealing device, which are arranged sequentially along the bag body conveying direction. The carrying rope guiding device includes a traction component and a guiding component. The traction component is located on the side of the frame. The traction component includes a traction roller and several guide rollers. The traction roller is arranged laterally, and the guide rollers include an upper guide roller and a lower guide roller arranged longitudinally. The inlet component includes an upper guide plate, a lower guide plate, and a first support plate. The first support plate is disposed between the upper guide plate and the lower guide plate. The upper and lower guide plates are vertically aligned, and their inner ends are connected to the first support plate. Their outer ends have a first material passage gap with the first support plate. Both the upper and lower guide plates are provided with guide wire holes, and their inner ends are provided with inlet grooves. The guide wire holes are inclined at 45 degrees.

2. The drawstring bag processing equipment according to claim 1, characterized in that: The carrying rope enters through the first material passage gap and passes through the guide groove and the guide wire groove in sequence.

3. The drawstring bag processing equipment according to claim 1 or 2, characterized in that: The carrying rope guiding device also includes a flattening component, which is located in front of the guiding component. The flattening component includes an upper partition plate, a lower partition plate, and a second support plate. The second support plate is located between the upper and lower partition plates. The upper and lower partition plates are vertically aligned, with their inward ends connected to the second support plate and their outward ends having a second material passage gap. The outward ends of the upper and lower partition plates extend outward with flattening legs. The upper and lower partition plates are each provided with at least two flattening legs, and the carrying rope passes around the flattening legs in sequence.

4. The drawstring bag processing equipment according to claim 1, characterized in that: The bag opening folding device includes an upper guide roller, a lower guide roller, a folding plate, and a cutter. The bag body passes through the upper guide roller, the folding plate, the cutter, and the lower guide roller in sequence. The folding plate and the cutter are arranged between the upper guide roller and the lower guide roller. The folding plate is set upright and the top of the folding plate is arc-shaped. The cutter is arranged below the folding plate.

5. The drawstring bag processing equipment according to claim 1, characterized in that: The heat sealing device includes an upper heat sealing blade, a heat sealing partition, and a lower heat sealing blade arranged longitudinally, and the upper heat sealing blade and the lower heat sealing blade move up and down relative to the heat sealing partition.

6. The drawstring bag processing equipment according to claim 1, characterized in that: The heat sealing device is also equipped with a side sealing point breaking mechanism, a longitudinal folding mechanism and a winding mechanism in front of it.

7. The drawstring bag processing equipment according to claim 6, characterized in that: The edge sealing and point-breaking mechanism includes a heat sealing knife and a point-breaking knife that move up and down. The heat sealing knife and the point-breaking knife are arranged horizontally. The heat sealing knife is provided with a mounting groove for inserting the point-breaking knife. The front and rear sides of the point-breaking knife are the front and rear cutting edges of the heat sealing knife, respectively.

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