Automatic conveying device for plastic bag production

Abstract

The invention discloses an automatic conveying device for plastic bag production, and relates to the technical field of plastic bag production. The device comprises a device body, a conveying belt set is arranged in the device body, a stacking device is arranged at the top of the device body, the stacking device comprises a first U-shaped frame, the first U-shaped frame is fixed to the top of the device body, openings are formed in the two sides of the first U-shaped frame, a threaded rod is rotationally installed in the first U-shaped frame, and the first U-shaped frame is fixed to the top of the device body. The threaded rod is driven by a motor, and the outer portion of the threaded rod is in threaded connection with a first threaded block. Through the arrangement of the stacking device, the threaded rod, the first threaded block, the second U-shaped frame, the two-way threaded rod, the second threaded block and the side plate are matched, and the conveying device can be conveniently and rapidly switched to convey and stack plastic bags of another type, so that it is ensured that the space in the conveying frame is fully utilized, the conveying cost is reduced, and the conveying efficiency of the plastic bags is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic bag production, in particular to an automatic transportation device for plastic bag production. Background Art

[0002] After the food plastic bags are produced and bundled on the production line, a transport device will be used to transport them. The transport device is mainly used to efficiently transport raw materials and finished products during the production process. The device usually includes conveyor belts, rollers, automatic guide systems, etc. to ensure smooth connection of each link in the production of plastic bags.

[0003] A Chinese patent with patent announcement number CN217837087U discloses an automated transportation device for the production of plastic products, including a conveyor, fixed seats are fixedly arranged on both sides of the top of the conveyor, and a second threaded rod is threadedly arranged on one side of the two fixed seats. One end of the two second threaded rods extends to the inside of the two fixed seats and is fixedly connected to two first threaded rods. The surfaces of the two first threaded rods and the surfaces of the two second threaded rods are threadedly arranged with sleeves. The patent can limit the plastic products through the arrangement of two limit plates to avoid the contact between the plastic products and the side walls of the conveyor during transportation, causing the plastic products to be blocked, thereby affecting the production rhythm. High-pressure gas is generated by energizing a powerful fan, and sprayed out by a plurality of nozzles to clean the plastic products. Adsorption force is generated by energizing the induced draft fan, and the gas mixed with dust is absorbed by a plurality of dust collecting hoppers.

[0004] However, the current transportation device has the following problem: after the transportation device has transported and stacked plastic bags of the same type and put them into the transportation box, it is not convenient to quickly switch to transport and stack plastic bags of another type into the transportation box, which will result in the space in the transportation box cannot be fully utilized, increasing the transportation cost. Therefore, we propose an automatic transportation device for plastic bag production. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides an automatic transport device for plastic bag production, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic transportation device for plastic bag production, comprising a device main body, a conveyor belt group is arranged inside the device main body, a stacking device is arranged on the top of the device main body, the stacking device comprises a U-shaped frame 1, the U-shaped frame 1 is fixed to the top of the device main body, and openings are arranged on both sides of the U-shaped frame 1, a threaded rod is rotatably installed inside the U-shaped frame 1, and the threaded rod is driven by a motor, a screw block 1 is threadedly connected to the outside of the threaded rod, and the screw block 1 is slidably installed on the top of the inner wall of the U-shaped frame 1, a U-shaped frame 2 is fixed at the bottom of the screw block 1, a bidirectional screw is rotatably installed inside the U-shaped frame 2, screw blocks 2 are threadedly connected to the outside of the bidirectional screw, and two screw blocks 2 are slidably installed on the top of the inner wall of the U-shaped frame 2, side plates are fixed at the bottoms of the two screw blocks 2, and inclined plates are fixed at one end of the two side plates, and the threaded rod drives the screw blocks The first U-shaped frame drives the second U-shaped frame to move, and the second U-shaped frame drives the side plate to move along through the bidirectional screw and the screw block, until the side plate moves to the position where the plastic bag needs to be transported and placed, and the plastic bag is placed on the conveyor belt of the conveyor belt group, and the plastic bag is placed between the two side plates, and the conveyor belt group is started, and the conveyor belt group can transport the bundled plastic bags. When the plastic bags in one area are stacked, the screw block one can be driven by the threaded rod to drive the U-shaped frame two to continue to move, and the U-shaped frame two drives the side plate to be staggered with the area where the previous plastic bag is stacked through the bidirectional screw and the screw block. It should also be noted that before placing the plastic bag, the distance between the two side plates can be adjusted according to the width of the plastic bag. Specifically, the bidirectional screw is rotated, and the bidirectional screw drives the two screw blocks two to approach or move away from each other, so that the two screw blocks two drive the two side plates to approach or move away from each other, so that the staff can adjust the distance between the two side plates according to the width of the plastic bag.

[0007] According to the above technical solution, a edge pressing device is arranged between the two side plates, and the edge pressing device includes four mouth-shaped frames, and the four mouth-shaped frames are embedded on both sides of the top of the two side plates, and sliders are slidably installed inside the four mouth-shaped frames, and springs are arranged between the sliders and the tops of the inner walls of the mouth-shaped frames, and rotating wheels are rotatably installed on the sides of the two opposite sliders close to each other, and the two rotating wheels on one side are externally connected with pressing belts for transmission. When the plastic bag is transported between the two side plates, under the action of the spring elastic force corresponding to the slider, the slider drives the pressing belt to be pressed on the edge of the plastic bag through the rotating wheel, and the pressing belt presses the edge of the plastic bag and can provide additional downward pressure.

[0008] According to the above technical solution, a connecting rod is fixed between the two sliders on one side. At the same time, the setting of the connecting rod ensures the consistency of the heights of the two sliders on one side, so that the two sliders on one side drive the two rotating wheels on one side to be at the same height.

[0009] According to the above technical solution, the edge pressing device also includes four positioning columns, which are respectively fixed at the four corners of the top of the device body. Squares are slidably installed on the outside of the four positioning columns, and springs are provided between the squares and the positioning columns. A square rod is rotatably installed between two opposing squares, and the square rod passes through two rotating wheels on one side. When the plastic bags are transported, the rotating wheels will inevitably be driven to rotate through the pressing belt. When one rotating wheel rotates, the other rotating wheel will be driven to rotate synchronously through the square rod. The setting of the square rod can ensure that the rotating wheels on both sides rotate synchronously.

[0010] According to the above technical solution, the edge pressing device also includes four cams and four elastic telescopic rods. The four cams are respectively fixed on the side of the four rotating wheels away from each other, and the four elastic telescopic rods are respectively fixed on the side of the two side plates away from each other. A two-way telescopic rod is fixed on the top of the two opposite elastic telescopic rods. Both telescopic ends of the two-way telescopic rods are fixed with L-shaped rods. A fixed rod is fixed on the bottom of the fixed end of the two-way telescopic rod. A trapezoidal pressure rod is fixed on the bottom of the fixed rod. The bottom cross support rod of the L-shaped rod is located on the motion trajectory of the cam. Under the elastic force of the elastic telescopic rod, the elastic telescopic rod The trapezoidal pressure rod is driven to press on the middle position of the plastic bag through the two-way telescopic rod and the fixed rod. When the rotating wheel rotates, the cam will be driven to rotate, and the cam will push the L-shaped rod to drive the two-way telescopic rod to move upward, and the two-way telescopic rod drives the telescopic end of the elastic telescopic rod to stretch, and the fixed end of the two-way telescopic rod drives the trapezoidal pressure rod to move upward through the fixed rod. When the cam does not push the L-shaped rod, under the elastic force of the elastic telescopic rod, the elastic telescopic rod drives the two-way telescopic rod to reset and move downward, and the fixed end of the two-way telescopic rod drives the trapezoidal pressure rod to move downward through the fixed rod, and so on and so forth, so that the trapezoidal pressure rod intermittently presses on the top surface of the plastic bag.

[0011] The U-shaped bracket has four L-shaped columns, each of which is fixed to one of the two outer walls of the U-shaped bracket. An upper pressure plate and a top pressure plate are slidably installed on the outside of the two L-shaped columns on one side from top to bottom in sequence, and a spring is provided between the upper pressure plate and the top pressure plate, the bottom surface of the upper pressure plate contacts the top surface of the side plate, and the top surface of the top pressure plate contacts the top surface of the inner wall of the conveyor belt of the conveyor belt group. A round block for limiting the position of the top pressure plate is fixed on the end of the L-shaped column away from the U-shaped bracket, and under the action of the spring elastic force corresponding to the upper pressure plate and the top pressure plate, the upper pressure plate and the top pressure plate respectively apply pressure to the top surface of the side plate and the top surface of the inner wall of the conveyor belt of the conveyor belt group, so that the bottom surface of the side plate is in close contact with the top surface of the conveyor belt of the conveyor belt group.

[0012] The present invention provides an automatic transport device for plastic bag production, which has the following beneficial effects:

[0013] (1) The present invention arranges a stacking device so that the threaded rod, screw block 1, U-shaped frame 2, bidirectional screw rod, screw block 2, and side plates cooperate, so that the transport device can be easily switched to transport and stack plastic bags of another type, thereby ensuring that the space in the transport frame is fully utilized, reducing transportation costs, and improving the transportation efficiency of plastic bags. At the same time, the bidirectional screw rod and the two screw blocks cooperate to drive the two side plates to move closer to or away from each other, so that the staff can adjust the distance between the two side plates according to the width of the plastic bag, thereby improving the adaptability of the transport device when transporting plastic bags; at the same time, when the plastic bag is between the two side plates, the inclined plate will guide the placement of the plastic bag, thereby facilitating the staff to place the plastic bag between the two side plates.

[0014] (2) The present invention sets a pressing device so that the slider and the rotating wheel cooperate to drive the pressing belt to press on the edge of the plastic bag. The pressing belt presses the edge of the plastic bag and can provide additional downward pressure, thereby reducing the sliding or displacement of the plastic bag on the conveyor belt and maintaining its stability. This can ensure that the plastic bag will not deviate from the predetermined path during transportation, reducing the need for manual adjustment or rearrangement, and avoiding the problem that the traditional pressing plate presses the entire surface of the plastic bag and applies excessive pressure to the plastic bag as a whole, especially for thinner or inflated plastic bags, which can easily lead to the problem of unstable shape or rupture of the plastic bag. The edge of the plastic bag after bundling may become loose or wrinkled due to external pressure or friction, affecting the appearance and transportation efficiency. The pressing belt can fix the edge of the plastic bag after bundling, maintain the integrity of the bag shape, and avoid irregular stacking due to bag deformation. At the same time, the setting of the connecting rod ensures the consistency of the height of the two sliders on one side, thereby The two sliders on one side drive the two rotating wheels on the other side to be at the same height, thereby improving the stability of the two rotating wheels on one side driving the pressing belt to press the plastic bag; at the same time, the setting of the square rod can ensure that the rotating wheels on both sides rotate synchronously, thereby avoiding the inconsistent rotation speeds of the rotating wheels on both sides, which causes the inconsistent rotation of the pressing belts on both sides, thereby leading to uneven pressing of the edges of the plastic bags, indentations, deformation or wrinkles, and affecting the quality of the final product; at the same time, the elastic telescopic rod, the two-way telescopic rod, the fixed rod, the trapezoidal pressure rod, the cam, and the L-shaped rod cooperate to drive the trapezoidal pressure rod to intermittently press on the top surface of the plastic bag. During the transmission process, the plastic bag, especially the thinner bags, are easily deformed or twisted by the influence of air flow or external force. By intermittently applying pressure to the top surface of the plastic bag, the shape of the plastic bag can be effectively maintained, and deformation or irregularity of the bag caused by air flow or friction can be avoided, ensuring that the plastic bag maintains a neat and standardized shape.

[0015] (3) The present invention provides an anti-stuck seam device so that the upper pressure plate and the top pressure plate apply pressure to the top surface of the side plate and the top surface of the inner wall of the conveyor belt of the conveyor belt group respectively, so that the bottom surface of the side plate is in close contact with the top surface of the conveyor belt of the conveyor belt group, thereby avoiding the problem of gaps between the side plate and the conveyor belt of the conveyor belt group, which causes the plastic bags to be stuck between the side plate and the conveyor belt group and affects the transportation of the plastic bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the present invention as a whole;

[0017] Figure 2 Schematic diagram of the stacking device of the present invention Figure 1 ;

[0018] Figure 3 Schematic diagram of the stacking device of the present invention Figure 2 ;

[0019] Figure 4 Schematic diagram of the edge pressing device of the present invention Figure 1 ;

[0020] Figure 5 Schematic diagram of the edge pressing device of the present invention Figure 2 ;

[0021] Figure 6 Schematic diagram of the anti-stuck seam device of the present invention Figure 1 ;

[0022] Figure 7 Schematic diagram of the anti-stuck seam device of the present invention Figure 2 .

[0023] In the figure: 1. device body; 2. conveyor belt group; 3. stacking device; 31. U-shaped frame 1; 32. screw block 1; 33. threaded rod; 34. U-shaped frame 2; 35. bidirectional screw; 36. screw block 2; 37. side plate; 38. inclined plate; 4. edge pressing device; 41. mouth-shaped frame; 42. slider; 43. rotating wheel; 44. pressing belt; 45. connecting rod; 46. positioning column; 47. block; 48. square rod; 49. cam; 410. elastic telescopic rod; 411. L-shaped rod; 412. fixing rod; 413. bidirectional telescopic rod; 414. trapezoidal pressure rod; 5. anti-stuck seam device; 51. L-shaped column; 52. upper pressure plate; 53. top pressure plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] See also Figure 1 - Figure 7An embodiment of the present invention is: an automatic transport device for plastic bag production, comprising a device body 1, a conveyor belt group 2 is arranged inside the device body 1, a stacking device 3 is arranged on the top of the device body 1, the stacking device 3 comprises a U-shaped frame 1 31, the U-shaped frame 1 31 is fixed on the top of the device body 1, and openings are arranged on both sides of the U-shaped frame 1 31, a threaded rod 33 is rotatably installed inside the U-shaped frame 1 31, and the threaded rod 33 is driven by a motor, the outer thread of the threaded rod 33 is connected with a screw block 1 32, and the screw block 1 32 is slidably installed on the top of the inner wall of the U-shaped frame 1 31, a U-shaped frame 2 34 is fixed at the bottom of the screw block 1 32, a bidirectional screw rod 35 is rotatably installed inside the U-shaped frame 2 34, both sides of the outer side of the bidirectional screw rod 35 are threadedly connected with screw blocks 2 36, and the two screw blocks 2 36 are slidably installed on the U-shaped frame 1 At the top of the inner wall of the frame 2 34, the bottoms of the two screw blocks 2 36 are fixed with side panels 37, and one end of the two side panels 37 is fixed with inclined panels 38. Through the arrangement of the above structure, the transport device is convenient for quickly switching to transport and stacking plastic bags of another type, thereby ensuring that the space in the transport frame is fully utilized, reducing transportation costs, and improving the transportation efficiency of plastic bags. Through the arrangement of the above structure, the two screw blocks 2 36 drive the two side panels 37 to move closer to or away from each other, so that the staff can adjust the distance between the two side panels 37 according to the width of the plastic bag, thereby improving the adaptability of the transport device when transporting plastic bags; at the same time, when the plastic bag is between the two side panels 37, the inclined panel 38 will guide the placement position of the plastic bag, thereby facilitating the staff to place the plastic bag between the two side panels 37.

[0026] A pressing device 4 is provided between the two side plates 37. The pressing device 4 includes four mouth-shaped frames 41. The four mouth-shaped frames 41 are embedded on both sides of the top of the two side plates 37. Slide blocks 42 are slidably installed inside the four mouth-shaped frames 41. A spring is provided between the slide blocks 42 and the top of the inner wall of the mouth-shaped frames 41. A rotating wheel 43 is rotatably installed on the side of the two opposite sliders 42 close to each other. The two rotating wheels 43 on one side are externally connected with a pressing belt 44. Through the arrangement of the above structure, the pressing belt 44 is pressed on the edge of the plastic bag. The pressing belt 44 presses the edge of the plastic bag, which can provide additional downward pressure, thereby reducing the plastic bag on the conveyor belt. The pressing belt 44 can fix the edges of the bundled plastic bags, maintain the integrity of the bag shape, and avoid irregular stacking due to bag deformation.

[0027] A connecting rod 45 is fixed between the two sliders 42 on one side. The setting of the connecting rod 45 ensures the consistency of the heights of the two sliders 42 on one side, so that the two sliders 42 on one side drive the two rotating wheels 43 on one side to be at the same height, thereby improving the stability of the two rotating wheels 43 on one side driving the pressing belt 44 to press the plastic bag.

[0028] The edge pressing device 4 also includes four positioning columns 46, which are respectively fixed at the four corners of the top of the device body 1. Blocks 47 are slidably installed on the outside of the four positioning columns 46, and springs are provided between the blocks 47 and the positioning columns 46. A square rod 48 is rotatably installed between the two opposite blocks 47, and the square rod 48 passes through the two rotating wheels 43 on one side. Through the setting of the square rod 48, the rotating wheels 43 on both sides can be ensured to rotate synchronously, thereby avoiding the problem that the rotating speeds of the rotating wheels 43 on both sides are inconsistent, resulting in inconsistent rotation of the pressing belts 44 on both sides, thereby causing uneven pressing of the edge of the plastic bag, indentations, deformation or wrinkles, and affecting the quality of the final product.

[0029] The edge pressing device 4 also includes four cams 49 and four elastic telescopic rods 410. The four cams 49 are respectively fixed on the side of the four rotating wheels 43 away from each other, and the four elastic telescopic rods 410 are respectively fixed on the side of the two side plates 37 away from each other. A two-way telescopic rod 413 is fixed on the top of the two opposite elastic telescopic rods 410, and L-shaped rods 411 are fixed on the telescopic ends on both sides of the two-way telescopic rod 413. A fixed rod 412 is fixed to the bottom of the fixed end of the two-way telescopic rod 413, and a trapezoidal pressure rod 414 is fixed to the bottom of the fixed rod 412. The bottom cross rod of the L-shaped rod 411 is located on the movement trajectory of the cam 49. Through the setting of the above structure, the trapezoidal pressure rod 414 intermittently presses on the top surface of the plastic bag. During the transmission process, the plastic bag, especially the thinner bag, is easily deformed or twisted by air flow or external force. By intermittently applying pressure to the top surface of the plastic bag, the shape of the plastic bag can be effectively maintained, and deformation or irregularity of the bag caused by air flow or friction can be avoided, ensuring that the plastic bag maintains a neat and standardized shape.

[0030] When in use, the motor drives the threaded rod 33 to rotate, and the threaded rod 33 drives the screw block 1 32 to drive the U-shaped frame 2 34 to move. The U-shaped frame 2 34 drives the side plate 37 to move through the bidirectional screw 35 and the screw block 2 36 until the side plate 37 moves to the position where the plastic bags need to be transported and placed, and the plastic bags are placed on the conveyor belt of the conveyor belt group 2, and the plastic bags are placed between the two side plates 37, and the conveyor belt group 2 is started. The conveyor belt group 2 can transport the bundled plastic bags. When the plastic bags in one area are stacked, the threaded rod 33 can drive the screw block 1 32 to drive the U-shaped frame 2 34 to continue to move, and the U-shaped frame 2 34 drives the side plate 37 to stagger with the area where the previous plastic bags are stacked through the bidirectional screw 35 and the screw block 2 36, so that the transportation device is convenient for quickly switching to transport and stacking another type of plastic bags. The plastic bag of size 10 can be placed in the transport frame to ensure that the space in the transport frame is fully utilized, thereby reducing transportation costs and improving the transportation efficiency of the plastic bags. It should also be noted that before placing the plastic bag, the distance between the two side panels 37 can be adjusted according to the width of the plastic bag. Specifically, the bidirectional screw 35 is rotated, and the bidirectional screw 35 drives the two screw blocks 36 to move closer to or away from each other, so that the two screw blocks 36 drive the two side panels 37 to move closer to or away from each other, so that the staff can adjust the distance between the two side panels 37 according to the width of the plastic bag, thereby improving the adaptability of the transport device when transporting plastic bags; at the same time, when the plastic bag is between the two side panels 37, the inclined plate 38 will guide the placement position of the plastic bag, thereby facilitating the staff to place the plastic bag between the two side panels 37.

[0031] When the bundled plastic bags are transported between the two side plates 37, under the action of the spring force corresponding to the slider 42, the slider 42 drives the pressing belt 44 to press on the edge of the plastic bag through the rotating wheel 43. The pressing belt 44 presses the edge of the plastic bag, which can provide additional downward pressure, thereby reducing the sliding or displacement of the plastic bag on the conveyor belt and maintaining its stability. This can ensure that the plastic bag will not deviate from the predetermined path during transportation, reducing the need for manual adjustment or rearrangement, and avoiding the problem that the traditional pressing plate presses the entire surface of the plastic bag, which will apply excessive pressure to the plastic bag as a whole, especially for thinner or inflated plastic bags, which is easy to cause the plastic bag to be unstable or ruptured. The edges of the bundled plastic bags may become loose or wrinkled due to external pressure or friction, affecting the appearance and transportation efficiency. The pressing belt 44 can fix the edges of the bundled plastic bags and maintain The integrity of the bag shape can avoid irregular stacking due to bag deformation. At the same time, the setting of the connecting rod 45 ensures the consistency of the height of the two sliders 42 on one side, so that the two sliders 42 on one side drive the two rotating wheels 43 on one side to be at the same height, thereby improving the stability of the two rotating wheels 43 on one side driving the pressing belt 44 to press the plastic bag; when the plastic bag is transported, it is inevitable that the rotating wheel 43 will be driven to rotate through the pressing belt 44. When one rotating wheel 43 rotates, one rotating wheel 43 will drive the other rotating wheel 43 to rotate synchronously through the square rod 48. The setting of the square rod 48 can ensure that the rotating wheels 43 on both sides rotate synchronously, thereby avoiding the problem that the rotating speeds of the rotating wheels 43 on both sides are inconsistent, causing the pressing belts 44 on both sides to rotate inconsistently, thereby causing the edges of the plastic bags to be pressed unevenly, resulting in indentations, deformation or wrinkles, and affecting the quality of the final product;Under the elastic force of the elastic telescopic rod 410, the elastic telescopic rod 410 drives the trapezoidal pressure rod 414 to press on the middle position of the plastic bag through the two-way telescopic rod 413 and the fixed rod 412. When the rotating wheel 43 rotates, the cam 49 is driven to rotate, and the cam 49 pushes the L-shaped rod 411 to drive the two-way telescopic rod 413 to move upward, and the two-way telescopic rod 413 drives the telescopic end of the elastic telescopic rod 410 to stretch, and the fixed end of the two-way telescopic rod 413 drives the trapezoidal pressure rod 414 to move upward through the fixed rod 412. When the cam 49 does not push the L-shaped rod 411, under the elastic force of the elastic telescopic rod 410, the elastic telescopic rod 410 drives the two-way telescopic rod 413 to reset and move downward, and the two-way telescopic rod 413 is moved downward. The fixed end of the plastic bag 13 drives the trapezoidal pressure rod 414 to move downward through the fixed rod 412, and so on, so that the trapezoidal pressure rod 414 intermittently presses on the top surface of the plastic bag. During the transportation process, the plastic bag, especially the thinner bag, is easily deformed or twisted by air flow or external force. By applying pressure to the top surface of the plastic bag intermittently, the shape of the plastic bag can be effectively maintained, and the deformation or irregularity of the bag caused by air flow or friction can be avoided, ensuring that the plastic bag maintains a neat and standardized shape. It should also be noted that when the distance between the two side plates 37 increases, the two side plates 37 will respectively drive the corresponding elastic telescopic rod 410 to stretch the telescopic end of the bidirectional telescopic rod 413. ;

[0032] See also Figure 1 - Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, an anti-stuck seam device 5 is provided on the outside of the U-shaped frame 31.

[0033] The anti-stuck seam device 5 includes four L-shaped columns 51, which are respectively fixed on both sides of the outer wall of the U-shaped frame 31. The outer sides of the two L-shaped columns 51 on one side are slidably mounted with an upper pressure plate 52 and a top pressure plate 53 from top to bottom, and a spring is arranged between the upper pressure plate 52 and the top pressure plate 53. The bottom surface of the upper pressure plate 52 contacts the top surface of the side plate 37, and the top surface of the top pressure plate 53 contacts the top surface of the inner wall of the conveyor belt of the conveyor belt group 2. The L-shaped columns 51 are away from the U-shaped frame 31. A round block for limiting the position of the top pressure plate 53 is fixed at one end. Through the arrangement of the above structure, the upper pressure plate 52 and the top pressure plate 53 apply pressure to the top surface of the side plate 37 and the top surface of the inner wall of the conveyor belt of the conveyor belt group 2 respectively, so that the bottom surface of the side plate 37 is in close contact with the top surface of the conveyor belt of the conveyor belt group 2, thereby avoiding the problem of gaps between the side plate 37 and the conveyor belt of the conveyor belt group 2, causing the plastic bags to be stuck between the side plate 37 and the conveyor belt group 2, affecting the transportation of the plastic bags.

[0034] When in use, under the action of the corresponding spring forces of the upper pressure plate 52 and the top pressure plate 53, the upper pressure plate 52 and the top pressure plate 53 apply pressure to the top surface of the side plate 37 and the top surface of the inner wall of the conveyor belt of the conveyor belt group 2 respectively, so that the bottom surface of the side plate 37 is in close contact with the top surface of the conveyor belt of the conveyor belt group 2, thereby avoiding the problem of gaps between the side plate 37 and the conveyor belt of the conveyor belt group 2, causing the plastic bags to be stuck between the side plate 37 and the conveyor belt group 2, affecting the transportation of the plastic bags.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic transport device for producing plastic bags, comprising a device body (1), wherein a conveyor belt group (2) is arranged inside the device body (1), characterized in that: A stacking device (3) is provided on the top of the device body (1), and the stacking device (3) comprises a U-shaped frame (31), the U-shaped frame (31) is fixed on the top of the device body (1), and openings are provided on both sides of the U-shaped frame (31), a threaded rod (33) is rotatably installed inside the U-shaped frame (31), and the threaded rod (33) is driven by a motor, and the outer thread of the threaded rod (33) is connected to a screw block (32), and the screw block (32) is connected to the screw block (32) by a screw thread. The first screw block (32) is slidably mounted on the top of the inner wall of the U-shaped frame (31), the bottom of the first screw block (32) is fixed with the second U-shaped frame (34), the inside of the second U-shaped frame (34) is rotatably mounted with a bidirectional screw rod (35), the outer sides of the bidirectional screw rod (35) are both threadedly connected with the second screw block (36), and the two second screw blocks (36) are both slidably mounted on the top of the inner wall of the second U-shaped frame (34), and the bottoms of the two second screw blocks (36) are both fixed with side plates (37).

2. The automatic transport device for plastic bag production according to claim 1, characterized in that: An inclined plate (38) is fixed to one end of each of the two side plates (37).

3. The automatic transport device for plastic bag production according to claim 1, characterized in that: A pressing device (4) is arranged between the two side plates (37), and the pressing device (4) comprises four mouth-shaped frames (41). The four mouth-shaped frames (41) are embedded on both sides of the top of the two side plates (37), and sliders (42) are slidably installed inside the four mouth-shaped frames (41), and a spring is arranged between the slider (42) and the top of the inner wall of the mouth-shaped frame (41), and a rotating wheel (43) is rotatably installed on the side where the two opposite sliders (42) are close to each other, and the two rotating wheels (43) on one side are externally connected with a pressing belt (44) for transmission.

4. The automatic transport device for plastic bag production according to claim 3, characterized in that: A connecting rod (45) is fixed between the two sliding blocks (42) on one side.

5. The automatic transport device for plastic bag production according to claim 3, characterized in that: The edge pressing device (4) also includes four positioning columns (46), which are respectively fixed at the four corners of the top of the device body (1), and the outside of the four positioning columns (46) is slidably installed with a block (47), and a spring is provided between the block (47) and the positioning column (46), and a square rod (48) is rotatably installed between two opposite blocks (47), and the square rod (48) passes through two rotating wheels (43) on one side.

6. The automatic transport device for plastic bag production according to claim 3, characterized in that: The edge pressing device (4) also includes four cams (49) and four elastic telescopic rods (410). The four cams (49) are respectively fixed on the side of the four rotating wheels (43) away from each other. The four elastic telescopic rods (410) are respectively fixed on the side of the two side plates (37) away from each other. A bidirectional telescopic rod (413) is fixed on the top of two opposite elastic telescopic rods (410). Both telescopic ends of the bidirectional telescopic rod (413) are fixed with L-shaped rods (411). A fixed rod (412) is fixed on the bottom of the fixed end of the bidirectional telescopic rod (413). A trapezoidal pressure rod (414) is fixed on the bottom of the fixed rod (412).

7. The automatic transport device for plastic bag production according to claim 6, characterized in that: The bottom cross rod of the L-shaped rod (411) is located on the movement track of the cam (49).

8. The automatic transport device for plastic bag production according to claim 1, characterized in that: An anti-stuck seam device (5) is arranged outside the U-shaped frame (31), and the anti-stuck seam device (5) comprises four L-shaped columns (51), and the four L-shaped columns (51) are respectively fixed on both sides of the outer wall of the U-shaped frame (31), and an upper pressure plate (52) and a top pressure plate (53) are slidably installed on the outside of the two L-shaped columns (51) on one side from top to bottom in sequence, and a spring is arranged between the upper pressure plate (52) and the top pressure plate (53).

9. The automatic transport device for plastic bag production according to claim 8, characterized in that: The bottom surface of the upper pressing plate (52) contacts the top surface of the side plate (37), and the top surface of the top pressing plate (53) contacts the top surface of the inner wall of the conveyor belt of the conveyor belt group (2).

10. The automatic transport device for plastic bag production according to claim 8, characterized in that: A round block for limiting the position of the top pressure plate (53) is fixed to one end of the L-shaped column (51) away from the U-shaped frame (31).

Images