Plastic bag folding and holding mechanism

Abstract

The utility model relates to the technical field of plastic bag folding field, especially a kind of plastic bag folding clamping mechanism, plastic bag folding clamping mechanism, including rack, the rack is provided with pressing plate mechanism, and the mobile plate is set on the both sides of rack;The pressing plate mechanism is installed in mobile plate side, and the mobile plate is installed on bracket;The bracket upside is connected with lateral drive mechanism, for driving the mobile plate of two sides to move towards, the bracket is provided with turnover movement mechanism, for after making two mobile plate mutually close, mobile plate is formed relative clamping state by turning over downward.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic bag folding, and in particular to a plastic bag folding clamping mechanism. Background Technology

[0002] During the production process of plastic bags, after stacks of plastic bags are folded, they are usually sent from the folding station to the bundling station by inserting a lower plate.

[0003] However, in the insert-down method, the insert cannot be placed at a folded position. If inserted at a folded position, the folded part of the plastic bag is prone to unfolding during the insertion process. Folding the left and right sides past the center insert position allows the insert to be positioned below the center, but this results in a bulky fold. Furthermore, it doesn't create an effective fold when the plastic bag is small. Therefore, the insert-down method limits the folding options for the plastic bag, requiring it to be folded away from the insert position before being inserted to achieve a proper fold.

[0004] Meanwhile, given the industry's requirements for the aesthetics of plastic bags, if the ends of the final folded plastic bags face outwards, the uneven, tilted state caused by differences in the binding method and thickness of the plastic bags is considered unsightly. There is a need for a folding method that can hide both ends of the plastic bags, but this effect is not easily achieved with existing insert-type folding plastic bag methods. Utility Model Content

[0005] The technical problem to be solved by this utility model is to address the above-mentioned technical deficiencies by providing a plastic bag folding and clamping mechanism. It adopts movable plates set on both sides of the frame. Before folding, the plastic bag is laid on the movable plates. As the two movable plates move closer to each other, they rotate downward to form a clamping state, realizing a folding process without the need for insert plates. At the same time, the movable plates take into account the plastic bag before folding and clamp the plastic bag after folding, realizing the unity of the two actions. Furthermore, it allows the folding method of the plastic bag to be freely set in the folding position without the need for insert plates.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a plastic bag folding and clamping mechanism, including a frame, a pressure plate mechanism on the frame, and movable plates on both sides of the frame; the pressure plate mechanism is installed on one side of the movable plate, and the movable plate is installed on a bracket; a lateral drive mechanism is connected to the upper side of the bracket for driving the two movable plates to move towards each other, and a flipping motion mechanism is provided on the bracket for causing the two movable plates to come close to each other and then flipping downwards to form a relative clamping state.

[0007] To further optimize this technical solution, the flipping motion mechanism also includes a guide groove for the movement of a guide moving plate disposed on the frame; the lower side of the bracket is slidably disposed in the guide groove, and the guide groove includes a flat part and a downwardly curved part that are connected.

[0008] To further optimize this technical solution, the flipping motion mechanism is a flipping motor, which is mounted on a bracket, and the rotating end of the flipping motor is driven to one side of the moving plate.

[0009] To further optimize this technical solution, when the lower side of the bracket slides to the flat section, the two moving plates on both sides are set horizontally; when the lower side of the bracket slides to the lower bend section, the two moving plates on both sides are set close to the vertical to form a relative clamping state.

[0010] To further optimize this technical solution, a clamping plate is also provided on the support on the lower side of the movable plate to clamp the movable plate. The clamping plate is rotatably installed on the lower side of the support, and the clamping plates on both sides are arranged facing the center. A clamping drive mechanism for driving the clamping plate to rotate is provided on the support.

[0011] To further optimize this technical solution, the frame is also equipped with a horizontally sliding lifting platform, which is located on the lower middle part between the two moving plates.

[0012] To further optimize this technical solution, the lifting platform is installed on the frame via a lateral moving mechanism, and a lifting mechanism is also provided on the lifting platform.

[0013] To further optimize this technical solution, the clamping plates on both sides are provided with staggered gaps. When the moving plates on both sides come close together, the clamping plates on both sides fit together along the staggered gaps to form a working surface.

[0014] To further optimize this technical solution, the lateral drive mechanism includes a belt mounted on the frame and a motor that drives the belt to rotate; the brackets corresponding to the two movable plates on both sides are respectively mounted on the upper and lower parts of the belt on the same side.

[0015] To further optimize this technical solution, the lower sides of the lower bends on both sides are inclined in a direction that moves away from each other.

[0016] To further optimize this technical solution, the clamping drive mechanism is a cylinder.

[0017] Compared with the prior art, this utility model has the following advantages: It adopts movable plates set on both sides of the frame. Before the plastic bag is folded, the plastic bag is laid on the movable plates. As the two movable plates move closer to each other, they rotate downward to form a clamping state, realizing a folding process without the need for insert plates. At the same time, the movable plates take into account the support of part of the plastic bag before folding and clamp the plastic bag after folding, realizing the unity of the two actions. Furthermore, it allows the folding method of the plastic bag to be freely set in the folding position without the need for insert plates. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the plastic bag folding and clamping mechanism.

[0019] Figure 2 This is a schematic diagram of an embodiment of a plastic bag folding and clamping mechanism.

[0020] Figure 3 This is a schematic diagram of the lower structure of an embodiment of a plastic bag folding and clamping mechanism.

[0021] Figure 4 This is a schematic diagram of the operation of an embodiment of the plastic bag folding and clamping mechanism.

[0022] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the plastic bag folding and clamping mechanism.

[0023] Figure 6 This is a schematic diagram of the structure of Embodiment 3 of the plastic bag folding and clamping mechanism.

[0024] In the diagram: 1. Frame; 2. Moving plate; 3. Support; 4. Guide groove; 5. Flat part; 6. Lower bend; 7. Pressure plate mechanism; 8. Clamping plate; 9. Clamping drive mechanism; 10. Lifting platform; 11. Gap; 12. Belt; 13. Motor; 14. Tilting motor. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0026] Detailed implementation method: combined with Figure 1-5 As shown, Example 1

[0027] Combination Figure 1-4As shown, the plastic bag folding and clamping mechanism includes a frame 1, on which a pressure plate mechanism 7 is mounted, and movable plates 2 are mounted on both sides of the frame 1. The pressure plate mechanism 7 is installed on one side of the movable plates 2, and the movable plates 2 are mounted on a bracket 3. A lateral drive mechanism is rotatably connected to the upper side of the bracket 3 for driving the two movable plates 2 to move towards each other. A flipping motion mechanism is provided on the bracket 3 for causing the two movable plates 2 to flip downwards to form a relative clamping state after they come close to each other. The flipping motion mechanism also includes a guide groove 4 on the frame 1 for guiding the movement of the movable plates 2. The lower side of the bracket 3 is slidably disposed in the guide groove 4, and the guide groove 4 includes a flat part 5 and a downwardly curved part 6 that are connected.

[0028] The pressure plate mechanism 7 is a mechanism that reciprocates on the frame 1 to temporarily press down the plastic bag located on the lifting platform 10. The reciprocating movement is achieved by a telescopic mechanism set on the frame 1. The telescopic mechanism can be driven by a cylinder or by a motor 13 and a belt 12.

[0029] When the lower side of the bracket 3 slides to the flat part 5, the two side moving plates 2 are set horizontally; when the lower side of the bracket 3 slides to the lower bend 6, the two side moving plates 2 are set close to the vertical to form a relative clamping state.

[0030] The support 3 on the lower side of the movable plate 2 is also provided with a clamping plate 8 that clamps the movable plate 2. The clamping plate 8 is rotatably installed on the lower side of the support 3, with the clamping plates 8 on both sides facing the center. The support 3 is provided with a clamping drive mechanism 9 that drives the clamping plate 8 to rotate. The clamping drive mechanism 9 is a cylinder.

[0031] The frame 1 is also provided with a horizontally sliding lifting platform 10, so the lifting platform 10 is located on the lower middle part between the two moving plates 2.

[0032] The lifting platform 10 is mounted on the frame 1 via a lateral moving mechanism, and a lifting mechanism is also provided on the lifting platform 10.

[0033] The lateral drive mechanism includes a belt 12 mounted on the frame 1 and a motor 13 that drives the belt 12 to rotate; the brackets 3 corresponding to the two side moving plates 2 are respectively mounted on the upper and lower parts of the belt 12 on the same side.

[0034] The lower sides of the two curved portions 6 are inclined in a direction that moves away from each other.

[0035] Combination Figure 1-5As shown, during operation, the plastic bag is laid flat on the two movable plates 2 on both sides and the lifting platform 10 in the middle. First, the pressure plate of the pressure plate mechanism 7 presses the plastic bag on the upper part of the lifting platform 10. Then, the two movable plates 2 move closer to each other. When the plastic bag is large, the plastic bag on the upper side of the movable plate 2 is pushed inward, with a portion still on the upper side of the movable plate 2. When the plastic bag is small, the plastic bag on the upper side of the movable plate 2 is folded onto the pressure plate. At the same time, the clamping plate 8 is in the non-clamping state under the lifting platform 10. At this time, the insertion plate mechanism and The moving platform is pulled out laterally, and only the clamping plate 8 and the moving plate 2 hold the plastic bag. Then, the two moving plates 2 continue to move closer under the drive of the lateral drive mechanism. At this time, the lower side of the two side brackets 3 slides from the flat part 5 of the guide groove 4 into the lower bend 6, which drives the moving plate 2 from its original horizontal state to bend downward and clamp it. Then, the lower plastic bag receiving component moves upward, and the clamping plate 8 moves away from the moving plate 2 and contacts the clamping plastic bag, so that the plastic bag is received by the lower plastic bag receiving component in the folded state, and the subsequent operation continues. Example 2

[0036] Combination Figure 5 As shown, the lifting platform 10 in Embodiment 1 has been removed, and the working process of the lifting platform 10 is replaced by a working surface formed by the clamping plates 8 on both sides. Specifically, the clamping plates 8 on both sides are provided with staggered gaps 11. After the moving plates 2 on both sides approach each other, the clamping plates 8 on both sides fit together along the staggered gaps 11 to form a working surface. The rest is the same as in Embodiment 1. During operation, the plastic bag is laid flat on both sides of the moving plates 2, and the middle of the plastic bag is laid on the working surface formed by the clamping plates 8 on both sides. The pressing plate mechanism 7 drives the pressing plate to move to the upper part of the working surface. Then, the moving plates 2 on both sides move closer to each other under the drive of the lateral driving mechanism, so that the upper part of the plastic bag is folded on the pressing plate. Example 3

[0037] Combination Figure 6 As shown, the flipping motion mechanism with sliding engagement of guide groove 4 in Embodiment 1 is replaced with flipping motor 14. Flipping motor 14 is mounted on bracket 3, and the rotating end of flipping motor 14 is driven to one side of moving plate 2 via belt.

[0038] As the two movable plates 2 approach each other, the rotating motor 14 drives the two movable plates 2 to gradually rotate downwards to a downward state.

[0039] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0040] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A plastic bag folding and clamping mechanism, comprising a frame (1), wherein a pressure plate mechanism (7) is provided on the frame (1), characterized in that: The frame (1) has movable plates (2) on both sides; the pressure plate mechanism (7) is installed on one side of the movable plate (2), and a bracket (3) is installed on one side of the movable plate (2); a lateral drive mechanism is installed between the bracket (3) and the frame (1) to drive the two movable plates (2) to move towards each other; a flipping motion mechanism is provided on the bracket (3) to make the two movable plates (2) move towards each other and then flip down to form a relative clamping state.

2. The plastic bag folding and clamping mechanism according to claim 1, characterized in that: The flipping motion mechanism also includes a guide groove (4) for the movement of the guide moving plate (2) on the frame (1); the lower side of the bracket (3) is slidably disposed in the guide groove (4), and the guide groove (4) includes a flat part (5) and a lower bend (6) that are connected; when the lower side of the bracket (3) slides to the flat part (5), the moving plates (2) on both sides are horizontally disposed; when the lower side of the bracket (3) slides to the lower bend (6), the moving plates (2) on both sides are close to the vertical to form a relative clamping state.

3. The plastic bag folding and clamping mechanism according to claim 1, characterized in that: The flipping motion mechanism is a flipping motor (14), which is mounted on the bracket (3). The rotating end of the flipping motor (14) is driven to one side of the moving plate (2).

4. The plastic bag folding and clamping mechanism according to claim 2 or 3, characterized in that: The support (3) on the lower side of the movable plate (2) is also provided with a clamping plate (8) that clamps the movable plate (2). The clamping plate (8) is rotatably mounted on the lower side of the support (3). The clamping plates (8) on both sides are arranged facing the center. The support (3) is provided with a clamping drive mechanism (9) that drives the clamping plate (8) to rotate.

5. The plastic bag folding and clamping mechanism according to claim 4, characterized in that: The frame (1) is also provided with a horizontally sliding lifting platform (10), which is located on the lower middle part between the two side moving plates (2).

6. The plastic bag folding and clamping mechanism according to claim 5, characterized in that: The lifting platform (10) is mounted on the frame (1) via a lateral moving mechanism, and a lifting mechanism is also provided on the lifting platform (10).

7. The plastic bag folding and clamping mechanism according to claim 4, characterized in that: The clamping plates (8) on both sides are provided with staggered gaps (11). When the moving plates (2) on both sides are close together, the clamping plates (8) on both sides fit together along the staggered gaps (11) to form a working surface.

8. The plastic bag folding and clamping mechanism according to claim 2 or 3, characterized in that: The lateral drive mechanism includes a belt (12) mounted on the frame (1) and a motor (13) that drives the belt (12) to rotate; the brackets (3) corresponding to the two side moving plates (2) are respectively mounted on the upper and lower parts of the belt (12) on the same side.

9. The plastic bag folding and clamping mechanism according to claim 2, characterized in that: The lower curved portions (6) on both sides are inclined in a direction away from each other.

10. The plastic bag folding and clamping mechanism according to claim 4, characterized in that: The clamping drive mechanism (9) is a cylinder.

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