Automatic edge sealing device for kraft paper bag production

Abstract

The utility model relates to a kraft paper bag production technical field, concretely relates to an automatic edge sealing device for kraft paper bag production. Including two vertical boards, be provided with fixed plate between two vertical boards, fixed plate is perpendicular with vertical board and fixed connection, both sides of fixed plate all install two vertical conveyors, all be fixed with the guide plate on the vertical plate of vertical conveyor top, the direction of the guide plate is inclined downward to the one end of kraft paper bag being conveyed, the end face of two vertical boards is fixed with the vertical first telescopic link, two first telescopic link upper end and upper frame fixed connection, two edge sealing units are slidably arranged in the upper frame, the edge sealing unit is connected through the second telescopic link with the upper frame, and the pre-clamping unit is fixed to the lower side of the edge sealing unit. The utility model not only reduces production cost and operation failure rate, but also ensures the accuracy and repeatability of the edge sealing process, and is suitable for large-scale production environment.

Description

Technical Field

[0001] This utility model relates to the field of kraft paper bag production technology, specifically to an automatic edge sealing device for kraft paper bag production. Background Technology

[0002] During the production of kraft paper bags, one end needs to be sealed. For kraft paper bags with an inner lining, one end can be sealed using a heat-sealing process.

[0003] Patent document CN220661876U discloses an automatic edge-sealing device for kraft paper bag production. It includes a support frame and an edge-sealing table. Six support rods are fixedly installed at the bottom of the support frame. Rotary rods are fixedly installed at two slots on the support frame. Rotary wheels are fixedly installed on the outer rings of the two rotating rods. A conveyor belt is movably installed on the outer rings of the rotating wheels. Support rods are fixedly installed on both sides of the edge-sealing table. An automatic telescopic rod is fixedly installed on the top of each support rod. The automatic telescopic rod includes an upper rod and a lower rod. A crossbar is fixedly installed on the top of the upper rod, and a hanging rod is fixedly installed on the bottom of the crossbar. An operating panel is fixedly installed on one side of the edge-sealing table. Kraft paper bags are transported to the edge-sealing table via the conveyor belt through a heating plate. The heating plate is placed under the kraft paper to be sealed, heating the surface of the kraft paper to soften and melt the glue or hot melt adhesive contained in the kraft paper. Then, the automatic telescopic rod presses the edge sealer onto the kraft paper bag, thereby achieving an effective edge-sealing effect. When transporting kraft paper bags, workers place the manufactured kraft paper bags in the baffles on the conveyor belt, and the entire conveyor belt is used for transportation. After being transported to the sealing table, the kraft paper bags are separated from the baffles and enter the heating plate on the sealing table. During this process, the kraft paper bags lack proper positioning, which can easily lead to inaccurate sealing positions. Utility Model Content

[0004] The main objective of this invention is to provide an automatic edge-sealing device for the production of kraft paper bags that can improve the accuracy of the edge-sealing position.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] An automatic sealing device for producing kraft paper bags includes two symmetrically arranged vertical plates, with a fixed plate between them. The fixed plate is perpendicular to and fixedly connected to the vertical plates. Two vertical conveyor belts are installed on both sides of the fixed plate. Kraft paper bags can be conveyed between the two vertical conveyor belts. Guide plates are fixed on the vertical plates above the vertical conveyor belts. The guide plates are inclined downwards at the end facing the direction in which the kraft paper bags are conveyed. Vertical first telescopic rods are fixed on the opposite end faces of the two vertical plates. The upper ends of the two first telescopic rods are fixedly connected to an upper frame. Two sealing units are slidably arranged inside the upper frame. The two sealing units are symmetrically arranged and connected to the upper frame through second telescopic rods. The first and second telescopic rods are perpendicular to each other. The movement direction of the sealing units is perpendicular to the conveying direction of the kraft paper bags. A pre-clamping unit is fixed on the lower side of the sealing unit.

[0007] Specifically, a support plate is fixed to the lower end of the first telescopic rod, and the support plate is fixedly connected to the upright plate.

[0008] Specifically, the edge sealing unit includes a slide rod, which is slidably disposed in the long groove of the upper frame. A heating sleeve is fixed on the slide rod inside the upper frame. One end of the second telescopic rod is fixedly connected to the upper frame, and the other end of the second telescopic rod is fixedly connected to the slide rod.

[0009] Specifically, the pre-clamping unit includes a vertical rod fixed to the lower side of the slide rod end, one end of the smooth rod passing through the lower end of the vertical rod, the smooth rod and the vertical rod being slidably connected, the smooth rod being perpendicular to the vertical rod, the axial direction of the smooth rod being perpendicular to the direction in which the kraft paper bag is conveyed, a spring being sleeved on the smooth rod, the other end of the smooth rod being fixedly connected to the clamping plate, one end of the spring being fixedly connected to the vertical rod, and the other end of the spring being fixedly connected to the clamping plate.

[0010] Specifically, the ends of the two clamps facing the direction of the kraft paper bag are far apart from each other.

[0011] Specifically, the distance between the two clamping plates is less than the distance between the two heating sleeves.

[0012] Specifically, both the first and second telescopic rods are electric push rods, and are electrically connected to the controller. A photoelectric sensor is fixed on one of the upright plates, and is electrically connected to the controller. The motor that drives the vertical conveyor belt is also electrically connected to the controller.

[0013] Specifically, the gap between the two guide plates corresponds to the gap between the two vertical conveyor belts, and the gap is vertically aligned.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The design of this automatic sealing device significantly improves the efficiency and quality of kraft paper bag production. By setting up a vertical conveyor belt, guide plate, and coordinating the work of controller and photoelectric sensors, the device achieves fully automated conveying, sealing, and unloading processes, reducing manual intervention and increasing production speed.

[0016] 2. The pre-clamping unit pre-clamps the kraft paper bag before sealing, ensuring its stable position and preventing displacement or loosening during the heat sealing process, thus guaranteeing the consistency and reliability of the sealing. Simultaneously, the inclined design of the guide plate helps the sealed kraft paper bag to smoothly exit from the device.

[0017] 3. The coordinated control of the first and second telescopic rods enables the device to guide the kraft paper bag to misalign with the gap between the two guide plates after sealing the kraft paper bag. This prevents the lower end of the kraft paper bag from getting stuck in the gap between the two guide plates during the process of falling, thus enhancing the smoothness and safety of the operation and ensuring that the sealed kraft paper bag can be smoothly discharged from the device.

[0018] 4. The design of the ends of the clamping plates facing the feeding direction being far apart further optimizes the guiding function, making it easier for the upper part of the kraft paper bag to quickly enter the clamping area, thus improving the adaptability and ease of use of the overall system.

[0019] 5. This utility model not only reduces production costs and operational error rates, but also ensures the accuracy and repeatability of the edge sealing process, making it suitable for large-scale production environments. Attached Figure Description

[0020] Figure 1 This is a side view of the present invention.

[0021] Figure 2 This is a top view of the top frame.

[0022] Figure 3 This is a side view of the guide plate on the upright plate.

[0023] Figure 4 This is a schematic diagram of the pre-clamping unit.

[0024] The components in the attached diagram are named as follows: 1. Vertical plate, 2. Fixed plate, 3. Vertical conveyor belt, 4. Pallet, 5. First telescopic rod, 6. Upper frame, 7. Second telescopic rod, 8. Long groove, 9. Heating sleeve, 10. Slide rod, 11. Vertical rod, 12. Smooth rod, 13. Spring, 14. Clamping plate, 15. Guide plate, 16. Photoelectric sensor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1: Refer to Figures 1-4 As shown, an automatic sealing device for kraft paper bag production includes two symmetrically arranged vertical plates 1, with a fixed plate 2 between the two vertical plates 1. The fixed plate 2 is perpendicular to and fixedly connected to the vertical plates 1. Two vertical conveyor belts 3 are installed on both sides of the fixed plate 2, and the kraft paper bag can be conveyed after being located between the two vertical conveyor belts 3.

[0027] Guide plates 15 are fixed on the vertical plate 1 above the vertical conveyor belt 3. The guide plates 15 are inclined downwards towards the end of the kraft paper bag being conveyed.

[0028] The gap between the two guide plates 15 and the gap between the two vertical conveyor belts 3 correspond vertically.

[0029] Vertical first telescopic rods 5 are fixed to the opposite end faces of the two upright plates 1. Specifically, a support plate 4 is fixed to the lower end of the first telescopic rod 5, and the support plate 4 is fixedly connected to the upright plate 1. The upper ends of the two first telescopic rods 5 are fixedly connected to the upper frame 6. Two sealing units are slidably arranged inside the upper frame 6. The two sealing units are symmetrically arranged, and the sealing units are connected to the upper frame 6 through second telescopic rods 7. The first telescopic rods 5 and the second telescopic rods 7 are perpendicular, and the movement direction of the sealing units is perpendicular to the conveying direction of the kraft paper bag.

[0030] The edge sealing unit includes a slide rod 10, which is slidably disposed in the long groove 8 of the upper frame 6. A heating sleeve 9 is fixed on the slide rod 10 in the upper frame 6. One end of the second telescopic rod 7 is fixedly connected to the upper frame 6, and the other end of the second telescopic rod 7 is fixedly connected to the slide rod 10.

[0031] A pre-clamping unit is fixed on the lower side of the edge sealing unit.

[0032] The pre-clamping unit includes a vertical rod 11 fixed to the lower side of the end of the slide rod 10. One end of a smooth rod 12 passes through the lower end of the vertical rod 11, and the smooth rod 12 is slidably connected to the vertical rod 11. The smooth rod 12 is perpendicular to the vertical rod 11, and its axial direction is perpendicular to the direction in which the kraft paper bag is conveyed. A spring 13 is sleeved on the smooth rod 12, and the other end of the smooth rod 12 is fixedly connected to a clamping plate 14. One end of the spring 13 is fixedly connected to the vertical rod 11, and the other end of the spring 13 is fixedly connected to the clamping plate 14. The distance between the two clamping plates 14 is less than the distance between the two heating sleeves 9.

[0033] The first telescopic rod 5 and the second telescopic rod 7 are both electric push rods. The first telescopic rod 5 and the second telescopic rod 7 are electrically connected to the controller. A photoelectric sensor 16 is fixed on one of the upright plates 1. The photoelectric sensor 16 is electrically connected to the controller. The motor that drives the vertical conveyor belt 3 is electrically connected to the controller.

[0034] During operation, the heating jacket 9 is activated. The kraft paper bags are conveyed sequentially between the two vertical conveyor belts 3, with the upper end of the kraft paper bags able to pass through the gap between the two guide plates 15 and the gap between the two clamping plates 14.

[0035] When the photoelectric sensor 16 detects the kraft paper bag, the controller shuts off the motor driving the vertical conveyor belt 3, and the vertical conveyor belt 3 stops working. Then, the controller activates the first telescopic rod 5, which drives the sealing unit and the pre-clamping unit downwards via the upper frame 6. After the upper frame 6 drives the sealing unit and the pre-clamping unit downwards, the upper end of the kraft paper bag is positioned between the two heating sleeves 9. Then, the controller activates the second telescopic rod 7, which drives the sliding rods 10 on both sides and the heating sleeves 9 to move closer together. At the same time, the uprights 11, the smooth rods 12, the springs 13, and the clamping plates 14 on both sides move closer together. Since the distance between the two clamping plates 14 is less than the distance between the two heating sleeves 9, the two clamping plates 14 pre-clamp the upper part of the kraft paper bag. Subsequently, as the two heating sleeves 9 continue to move closer together, the two clamping plates 14 maintain the clamping of the kraft paper bag, the smooth rods 12 slide relative to the uprights 11, and the springs 13 are compressed. After the two heating sleeves 9 clamp the top of the kraft paper bag, the high temperature of the heating sleeves 9 can seal the top of the kraft paper bag.

[0036] After the top edge of the kraft paper bag is sealed, the controller causes the first telescopic rod 5 to move the sealing unit, the pre-clamping unit and the kraft paper bag downward through the upper frame 6, and the kraft paper bag exits between the two vertical conveyor belts 3.

[0037] Then, the second telescopic rod 7 on the left retracts, and the second telescopic rod 7 on the right extends, with the retraction speed of the second telescopic rod 7 on the left being equal to the extension speed of the second telescopic rod 7 on the right, thereby causing the gap between the kraft paper bag and the two guide plates 15 to shift. Then, the second telescopic rods 7 on the left and right retract and return to their original positions, and the sealed kraft paper bag falls onto the upper ends of the two guide plates 15 and slides out of the device.

[0038] The misalignment of the gap between the kraft paper bag and the two guide plates 15 can prevent the lower end of the kraft paper bag from being inserted into the gap between the two guide plates 15 during the falling process.

[0039] After the second telescopic rod 7 is reset, the first telescopic rod 5 is also reset, and then the next kraft paper bag can be sealed.

[0040] Example 2: Based on Example 1, referring to... Figure 1 and Figure 4 As shown, the ends of the two clamps 14 facing the direction of the kraft paper bag are far apart from each other.

[0041] When the kraft paper bag is conveyed between two vertical conveyor belts 3, the ends of the two clamps 14 facing the material direction of the kraft paper bag can guide the kraft paper bag, making it easier for the upper part of the kraft paper bag to enter between the two clamps 14, and ensuring effective sealing of the upper edge of the kraft paper bag.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic sealing device for producing kraft paper bags, comprising two symmetrically arranged upright plates (1), a fixing plate (2) disposed between the two upright plates (1), the fixing plate (2) being perpendicular to and fixedly connected to the upright plates (1), characterized in that, Two vertical conveyor belts (3) are installed on both sides of the fixed plate (2). The kraft paper bag can be transported after being located between the two vertical conveyor belts (3). Guide plates (15) are fixed on the vertical plates (1) above the vertical conveyor belts (3). The guide plates (15) are inclined downwards towards the direction in which the kraft paper bag is transported. Vertical first telescopic rods (5) are fixed on the opposite end faces of the two vertical plates (1). The upper ends of the two first telescopic rods (5) are fixedly connected to the upper frame (6). Two sealing units are slidably arranged inside the upper frame (6). The two sealing units are symmetrically arranged. The sealing units are connected to the upper frame (6) through the second telescopic rod (7). The first telescopic rod (5) is perpendicular to the second telescopic rod (7). The movement direction of the sealing unit is perpendicular to the transport direction of the kraft paper bag. A pre-clamping unit is fixed on the lower side of the sealing unit.

2. The automatic sealing device for kraft paper bag production according to claim 1, characterized in that, The lower end of the first telescopic rod (5) is fixed with a support plate (4), and the support plate (4) is fixedly connected to the upright plate (1).

3. The automatic sealing device for kraft paper bag production according to claim 1, characterized in that, The edge sealing unit includes a slide rod (10), which is slidably disposed in the long groove (8) of the upper frame (6). A heating sleeve (9) is fixed on the slide rod (10) in the upper frame (6). One end of the second telescopic rod (7) is fixedly connected to the upper frame (6), and the other end of the second telescopic rod (7) is fixedly connected to the slide rod (10).

4. The automatic sealing device for kraft paper bag production according to claim 3, characterized in that, The pre-clamping unit includes a vertical rod (11) fixed to the lower side of the end of the slide rod (10), one end of the smooth rod (12) passing through the lower end of the vertical rod (11), the smooth rod (12) and the vertical rod (11) being slidably connected, the smooth rod (12) being perpendicular to the vertical rod (11), the axial direction of the smooth rod (12) being perpendicular to the direction in which the kraft paper bag is conveyed, a spring (13) being sleeved on the smooth rod (12), the other end of the smooth rod (12) being fixedly connected to the clamping plate (14), one end of the spring (13) being fixedly connected to the vertical rod (11), and the other end of the spring (13) being fixedly connected to the clamping plate (14).

5. The automatic sealing device for kraft paper bag production according to claim 4, characterized in that, The ends of the two clamps (14) facing the direction of the kraft paper bag are far apart from each other.

6. The automatic sealing device for kraft paper bag production according to claim 4, characterized in that, The distance between the two clamps (14) is less than the distance between the two heating sleeves (9).

7. The automatic sealing device for kraft paper bag production according to claim 1, characterized in that, The first telescopic rod (5) and the second telescopic rod (7) are both electric push rods. The first telescopic rod (5) and the second telescopic rod (7) are electrically connected to the controller. A photoelectric sensor (16) is fixed on one of the upright plates (1). The photoelectric sensor (16) is electrically connected to the controller. The motor that drives the vertical conveyor belt (3) is electrically connected to the controller.

8. The automatic sealing device for kraft paper bag production according to claim 1, characterized in that, The gap between the two guide plates (15) and the gap between the two vertical conveyor belts (3) correspond vertically.

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