Edge folding device for plastic woven bag

Abstract

The utility model discloses a plastic woven bag edge folding device, which belongs to the technical field of woven bag edge folding and comprises a conveyor, a moving track, a stand column and a clamping and aligning mechanism, the conveyor is used for conveying woven bags, the stand column is slidably mounted on the moving track through a moving base, and the clamping and aligning mechanism comprises two clamping plates and an edge folding plate. And when the woven bag is clamped by the two clamping plates, the edge folding plates are turned over and fold the woven bag along the edges of the clamping plates. According to the designed clamping and smoothing mechanism, the two clamping plates can be used for clamping the woven bag from the two sides of the woven bag, along with upward movement of the lifting table, the clamping plates move upwards along the woven bag, so that the upper portion of the woven bag is clamped, at the moment, the edge of the top of the woven bag is turned over through turning over of the edge folding plate, the edge of the top of the woven bag is folded around the edges of the clamping plates, and therefore the woven bag is folded. And the edge folding operation of the plastic woven bag is completed.

Description

Technical Field

[0001] This utility model relates to the field of folding technology for woven bags, and specifically to a folding device for plastic woven bags. Background Technology

[0002] Before sealing, plastic woven bags need to have their openings folded, and then the folded portion is sewn closed. Current folding devices require the user to first straighten the top of the woven bag before moving it to the folding machine, resulting in low automation. Existing folding equipment simply uses guide rails to fold the top of the woven bag, which is highly dependent on the initial state of the bag. If the bag is not initially straightened, the top of the bag may misalign with the guide rail, preventing the folding process from being completed. Utility Model Content

[0003] To address the aforementioned technical deficiencies, the purpose of this utility model is to provide a plastic woven bag folding device. By setting two clamping plates and a folding plate, the upper part of the woven bag can be clamped, and then the folding plate can be flipped to form a fold at the top edge of the woven bag.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a plastic woven bag folding device, comprising:

[0005] Conveyor, used to transport woven bags;

[0006] A movable track, on which a movable base is slidably mounted;

[0007] A column is fixed on a movable base, and a lifting platform is provided on the column for lifting and lowering.

[0008] The clamping and straightening mechanism is set on the lifting platform and includes two clamping plates. The clamping plates have a degree of freedom to move relative to each other. One of the clamping plates is provided with a folding plate, which has a degree of freedom to flip on the clamping plate.

[0009] When the two clamps hold the woven bag, the folding plate flips over and folds the woven bag along the edge of the clamps.

[0010] Preferably, the clamping and straightening mechanism further includes:

[0011] Two guide columns, which are parallel and fixed to one side of the lifting platform;

[0012] Two sliders, each slider being fitted onto two guide posts, and two clamping plates respectively disposed on the two sliders;

[0013] A movable component, mounted on a lifting platform, is used to drive two sliders to move relative to each other.

[0014] Preferably, the moving component includes;

[0015] Two elastic connection units are elastically connected to the slider.

[0016] Two racks, each of which is fixed to two elastic connecting units;

[0017] The first motor is fixed on the lifting base, and a gear is fixed on the output shaft of the first motor. Two racks are located on both sides of the gear and mesh with the gear.

[0018] Preferably, the elastic connection unit includes:

[0019] A limiting block is sleeved on a guide post, and two racks are fixed on the two limiting blocks respectively;

[0020] A spring is sleeved on a guide post between the limiting block and the slider;

[0021] A limiting component is provided on the slider to limit the distance range between the limiting block and the slider.

[0022] Preferably, the limiting member includes a limiting rod fixed on the slider, the end of the limiting rod away from the slider passes through the limiting block, and a limiting nut is provided on the limiting rod on the side of the limiting block away from the slider.

[0023] Preferably, the two clamping plates are a first clamping plate and a second clamping plate, one end of the first clamping plate is fixed with a second motor, the folding plate is fixed on the output shaft of the second motor, and the first clamping plate and the second clamping plate are parallel.

[0024] Preferably, anti-slip strips are fixed on both the first clamping plate and the second clamping plate.

[0025] Preferably, an electric push rod is fixed on the movable base, and the movable end of the electric push rod is fixedly connected to the lifting platform.

[0026] Preferably, two sprockets are fixed on the moving track, and a chain is wound around the two sprockets. A third motor for driving one of the sprockets to rotate is fixed on the moving track, and an ear plate is provided on the chain for fixed connection with the moving base.

[0027] Preferably, the conveyor is a belt conveyor, and the conveying direction of the conveyor is parallel to the moving direction of the movable base on the moving track.

[0028] The beneficial effects of this utility model are as follows:

[0029] The clamping and straightening mechanism designed in this utility model uses two clamping plates to clamp the woven bag from both sides. As the lifting platform moves upward, the clamping plates move upward along with the woven bag, thus clamping the upper part of the woven bag. At this time, the folding plate flips to fold the top edge of the woven bag, forming a folded edge around the edge of the clamping plate, completing the folding operation of the plastic woven bag. This utility model is equipped with a first motor, which drives two racks to move relative to each other through gears, thereby realizing the relative movement of the two clamping plates, allowing the clamping plates to clamp the plastic woven bag. This utility model is designed with an elastic connecting unit. When the racks move, they drive the limiting block to move on the guide post. The limiting block pushes the slider to move through the spring, thereby realizing the elastic clamping of the clamping plates on the plastic woven bag, avoiding excessive clamping and preventing the woven bag from being straightened upward. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A rear-view perspective perspective view of a plastic woven bag folding device provided for an embodiment of this utility model.

[0032] Figure 2 A front-view perspective perspective view of a plastic woven bag folding device provided for an embodiment of this utility model.

[0033] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0034] Figure 4 for Figure 2 A magnified view of a section at point B.

[0035] Figure 5 This is a schematic diagram showing the clamping state of two clamps of a plastic woven bag folding device provided in an embodiment of the present invention.

[0036] Figure 6 for Figure 5 A magnified view of a section at point C.

[0037] Figure 7 This is a schematic diagram of the folding plate flipping to the side of the second clamping plate in a plastic woven bag folding device provided in an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Belt conveyor; 2. Moving track; 3. Moving base; 4. Column; 5. Lifting platform; 6. First clamping plate; 7. Second clamping plate; 8. Folding plate; 9. Guide column; 10. Slider; 11. Rack; 12. First motor; 13. Gear; 14. Limiting block; 15. Spring; 16. Limiting rod; 17. Limiting nut; 18. Second motor; 19. Anti-slip strip; 20. Electric push rod; 21. Sprocket; 22. Chain. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Example 1:

[0042] like Figures 1 to 7 As shown, Embodiment 1 of this utility model provides a plastic woven bag folding device for folding the edges of woven bags filled with materials. The device includes a conveyor, a moving track 2, a moving base 3, a column 4, a lifting platform 5, and a clamping and straightening mechanism. To ensure smooth transport of the woven bags filled with materials, a belt conveyor 1 is selected. The moving track 2 is placed parallel to the conveyor, and the moving base 3 is slidably mounted on the moving track 2. The column 4 is fixed to the upper surface of the moving base 3, and the lifting platform 5 is sleeved on the column 4 and slidably engaged with it. An electric push rod 20 is fixedly installed on the moving base 3, with one end of the electric push rod 20 away from the moving base 3 connected to the lifting platform 5. This allows the lifting platform 5 to be driven to rise and fall along the column 4 via the electric push rod 20. The clamping and straightening mechanism is located on the lifting platform 5; when the lifting platform 5 rises and falls, the clamping and straightening mechanism rises and falls along with it. The conveying direction of the belt conveyor 1 is parallel to the moving direction of the movable base 3 on the moving track 2. In this way, after the clamping and straightening mechanism folds the top edge of the woven bag, it can be separated from the plastic woven bag as the movable base 3 moves. Alternatively, during the movement of the plastic woven bag on the belt conveyor 1, the clamping and straightening mechanism moves at the same speed as the plastic woven bag and completes the folding operation.

[0043] like Figure 3 and Figure 4As shown, the clamping and straightening mechanism designed in this utility model includes two guide posts 9 fixed on the same side of the lifting platform 5, two sliders 10, a moving assembly, and two clamping plates. The two guide posts 9 are parallel and both pass through the two sliders 10, allowing the sliders 10 to slide along the guide posts 9. The two clamping plates are a first clamping plate 6 and a second clamping plate 7, respectively, which are fixed to the two sliders 10. To drive the two sliders 10 to move symmetrically, the moving assembly designed in this utility model includes a first motor 12 fixed on the lifting platform 5, a gear 13 fixed on the output shaft of the first motor 12, two elastic connecting units, and two racks 11. Figure 3 As can be seen, the two racks 11 are located on both sides of the gear 13 and mesh with the gear 13. The racks 11 are connected to the slider 10 through the elastic connection unit. In this way, when the first motor 12 drives the racks 11 to move, the racks 11 can drive the slider 10 to move with a certain elasticity. This allows the two clamping plates to hold the woven bag elastically and avoid clamping the woven bag too tightly.

[0044] like Figure 4 As shown, each elastic connection unit includes a limiting block 14 simultaneously fitted onto two guide posts 9, a spring 15 fitted between the limiting block 14 and the slider 10, and a limiting member disposed between the limiting block 14 and the slider 10. The rack 11 is fixed to the limiting block 14, so that when the rack 11 moves under the drive of the first motor 12, it first drives the limiting block 14 to move. When the two clamping plates need to move towards the woven bag, the limiting block 14 pushes the spring 15, which in turn pushes the slider 10 to move; when the two clamping plates need to move away from each other, the limiting block 14 can pull the slider 10 to move via the limiting member. The limiting component is a limiting rod 16 fixed to the slider 10. The limiting rod 16 is parallel to the guide rod and passes through the limiting block 14. A limiting nut 17 is threaded onto the end of the limiting rod 16 located away from the slider 10. The limiting block 14 is restricted between the slider 10 and the limiting nut 17, and the distance between the limiting block 14 and the slider 10 is limited by the limiting nut 17. By adjusting the position of the limiting nut 17, the distance range between the limiting block 14 and the slider 10 can be precisely controlled, thereby adjusting the compression of the spring 15 to adapt to the clamping force requirements of woven bags of different thicknesses.

[0045] During operation, the first motor 12 drives the gear 13 to rotate, causing the racks 11 on both sides to move relative to each other. The racks 11 drive the limiting blocks 14 to move synchronously. The limiting blocks 14 push the slider 10 and the clamping plates to move through the spring 15, so that the two clamping plates move closer to each other and elastically clamp the woven bag. The elastic force of the spring 15 prevents the clamping from being too tight, ensuring that the clamping plates move upward and straighten the top of the woven bag when the lifting platform 5 moves upward. After the clamping plates clamp the top of the woven bag, the second motor 18 on the first clamping plate 6 drives the folding plate 8 to flip, folding the edge of the woven bag along the top edge of the second clamping plate 7, completing the folding operation of the woven bag.

[0046] Example 2:

[0047] like Figure 1 As shown, based on Embodiment 1, Embodiment 2 further optimizes the drive structure of the movable base 3 and the lifting method of the lifting platform 5. First, two sprockets 21 are rotatably installed on the movable track 2, and the two sprockets 21 are connected by a chain 22. A third motor is fixed at one end of the movable track 2 and drives one of the sprockets 21 to rotate. The ear plate on the chain 22 is fixedly connected to the movable base 3. In this way, the third motor can drive the chain 22 to rotate, so that the movable base 3 can slide smoothly on the movable track 2, which facilitates the adjustment of the overall position of the clamp and makes the clamp fit the position of the woven bag.

[0048] After the woven bag is conveyed to the designated position by the belt conveyor 1, the third motor drives the movable base 3 to move to the position corresponding to the woven bag. The electric push rod 20 drives the lifting platform 5 to descend, so that the two clamping plates are located on both sides of the woven bag. The first motor 12 drives the two clamping plates to move relative to each other through the gear 13 and the rack 11, and uses the elastic force of the spring 15 to clamp the two sides of the woven bag.

[0049] Example 3:

[0050] Based on Embodiments 1 and 2, Embodiment 3 focuses on optimizing the clamping stability of the clamping plates and the driving structure of the folding plate 8. First, anti-slip strips 19 are fixed to the opposite sides of both the first clamping plate 6 and the second clamping plate 7. The anti-slip strips 19 are made of rubber with a serrated surface, which increases the friction between the clamping plates and the woven bag. This allows the clamping plates to elastically clamp and move the woven bag, and the friction helps to straighten the bag. A second motor 18 is fixedly installed at the end of the first clamping plate 6 near the slider 10. The folding plate 8 is fixed to the output shaft of the second motor 18, and the first clamping plate 6 and the second clamping plate 7 are arranged parallel to each other.

[0051] like Figure 6 and Figure 7 As shown, when the first clamping plate 6 and the second clamping plate 7 approach each other and press against the upper part of the woven bag, the second motor 18 drives the folding plate 8 to rotate 180 degrees, thereby folding the edge of the woven bag along the upper edge of the second clamping plate 7 to form a neat fold.

[0052] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A plastic woven bag folding device, characterized by, include: Conveyor, used to transport woven bags; A movable track, on which a movable base is slidably mounted; A column is fixed on a movable base, and a lifting platform is provided on the column for lifting and lowering. The clamping and straightening mechanism is set on the lifting platform and includes two clamping plates. The clamping plates have a degree of freedom to move relative to each other. One of the clamping plates is provided with a folding plate, which has a degree of freedom to flip on the clamping plate. When the two clamps hold the woven bag, the folding plate flips over and folds the woven bag along the edge of the clamps.

2. The plastic woven bag folding device as described in claim 1, characterized in that, The clamping and straightening mechanism also includes: Two guide columns, which are parallel and fixed to one side of the lifting platform; Two sliders, each slider being fitted onto two guide posts, and two clamping plates respectively disposed on the two sliders; A movable component, mounted on a lifting platform, is used to drive two sliders to move relative to each other.

3. The plastic woven bag folding device as described in claim 2, characterized in that, The mobile component includes; Two elastic connection units are elastically connected to the slider. Two racks, each of which is fixed to two elastic connecting units; The first motor is fixed on the lifting base, and a gear is fixed on the output shaft of the first motor. Two racks are located on both sides of the gear and mesh with the gear.

4. The plastic woven bag folding device as described in claim 3, characterized in that, The elastic connection unit includes: A limiting block is sleeved on a guide post, and two racks are fixed on the two limiting blocks respectively; A spring is sleeved on a guide post between the limiting block and the slider; A limiting component is provided on the slider to limit the distance range between the limiting block and the slider.

5. A plastic woven bag folding device as described in claim 4, characterized in that, The limiting component includes a limiting rod fixed on the slider, with the end of the limiting rod away from the slider passing through the limiting block, and a limiting nut provided on the limiting rod on the side of the limiting block away from the slider.

6. The plastic woven bag folding device as described in claim 1, characterized in that, The two clamping plates are a first clamping plate and a second clamping plate. A second motor is fixed to one end of the first clamping plate, and the folded edge plate is fixed on the output shaft of the second motor. The first clamping plate and the second clamping plate are parallel.

7. A plastic woven bag folding device as described in claim 6, characterized in that, Anti-slip strips are fixed on both the first and second clamping plates.

8. A plastic woven bag folding device as described in claim 1, characterized in that, An electric push rod is fixed on the movable base, and the movable end of the electric push rod is fixedly connected to the lifting platform.

9. A plastic woven bag folding device as described in claim 1, characterized in that, Two sprockets are fixed on the moving track, and a chain is wound around the two sprockets. A third motor for driving one of the sprockets to rotate is fixed on the moving track, and ear plates that are fixedly connected to the moving base are provided on the chain.

10. A plastic woven bag folding device as described in claim 1, characterized in that, The conveyor is a belt conveyor, and the conveying direction of the conveyor is parallel to the moving direction of the movable base on the moving track.

Images