An environmentally friendly material feeding guide structure for plastic bottle production

Abstract

This utility model discloses an environmentally friendly material feeding and guiding structure for plastic bottle production, belonging to the technical field of plastic bottle processing equipment. It includes a blown film machine, with a conveyor chain located below the outlet of the blown film machine. Plastic bottles are inverted and mounted on the conveyor chain via equally spaced die heads. Several parallel rotating robotic arms are located on one side of the conveyor chain, and controllers are connected to the sides of each robotic arm. A conveyor belt is located below one side of each robotic arm. Limiting baffles are installed on both sides of the conveyor belt above the machine frames, except for the plastic bottle turning area. Material feeding and guiding components are located in the plastic bottle turning area above the machine frames on both sides of the conveyor belt. This material feeding and guiding structure can guide the rows of plastic bottles below the rotating robotic arms, allowing the bottles to smoothly and gently enter the conveyor belt below. Simultaneously, it provides lateral stabilizing limits on the plastic bottles on the conveyor belt, preventing them from falling off the machine frames, reducing material waste, and conforming to the factory's green and environmentally friendly production concept.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic bottle processing equipment, and more specifically, to an environmentally friendly material feeding guide structure for plastic bottle production. Background Technology

[0002] In the mass production of plastic bottles, the preform is formed by a blown film machine to obtain the required shape and size of the plastic bottle. Since the preform is inverted during blown film production, the formed plastic bottle needs to be flipped by a rotating robotic arm to flip the formed plastic bottle onto the conveyor belt below and transport it to the labeling machine for labeling.

[0003] During the aforementioned flipping process, the existing equipment lacks a dedicated material feeding guide structure. Furthermore, to prevent the lower end of the bottle from colliding with the conveyor belt frame during flipping, there is typically a five to ten centimeter height difference between the conveyor belt and the extreme flipping position. This causes the plastic bottles, which are being formed below the robotic arm, to wobble during their descent, sometimes even tipping to the sides. Additionally, taller plastic bottles are prone to tipping over on the conveyor belt, affecting transportation efficiency. Tilted bottles fall onto the factory floor, causing contamination, waste of raw materials, and are not environmentally friendly. Utility Model Content

[0004] The purpose of this invention is to provide an environmentally friendly material feeding guide structure for plastic bottle production. This material feeding guide structure can guide the rows of plastic bottles below the rotating robotic arm, allowing the plastic bottles to smoothly and gently enter the conveyor belt below. At the same time, it provides stable limiting on both sides of the plastic bottles on the conveyor belt, preventing the plastic bottles from falling off the frame, reducing raw material waste, and conforming to the factory's green and environmentally friendly production concept.

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

[0006] An environmentally friendly material feeding and guiding structure for plastic bottle production includes a blown film machine. A conveyor chain is provided below the outlet of the blown film machine. Plastic bottles are inverted and loaded above the conveyor chain via equidistantly spaced die heads. Several parallel rotating robotic arms are provided on one side of the conveyor chain. A controller is connected to the side of each rotating robotic arm. A conveyor belt is provided below one side of each rotating robotic arm. Limiting baffles are installed above the frames on both sides of the conveyor belt, except for the plastic bottle turning area. A material feeding and guiding assembly is provided above the plastic bottle turning area on both sides of the conveyor belt. The material feeding and guiding assembly includes an adjustable positioning plate located inside the plastic bottle and a movable arc-shaped guide plate located outside the plastic bottle.

[0007] As a further optimization of this solution, the movable arc-shaped guide plate is semi-circular in shape and has equidistant vertical through grooves machined on its inner arc surface. Each vertical through groove has a damping buffer strip with a rough outer surface bonded and fixed inside. The upper and lower ends of the damping buffer strip extend outward from the movable arc-shaped guide plate. The rear side of the movable arc-shaped guide plate is connected to the inner side of the push-pull plate via a connecting rod. The outer side of the push-pull plate is connected to the telescopic piston rod of the electronically controlled cylinder.

[0008] As a further optimization of this solution, the electronically controlled cylinder is mounted on the outside of the conveyor belt via a bracket plate, and a control panel is also provided on the upper surface of the bracket plate.

[0009] As a further optimization of this solution, both ends of the rear side of the adjustable positioning plate are connected to the side of the frame plate of the conveyor chain through a transverse telescopic connecting rod. A blind groove is provided on the outer side of the adjustable positioning plate at the end opposite to the running direction of the conveyor belt. A pressure plate type limit switch is embedded in the blind groove. The pressure plate of the pressure plate type limit switch is raised outward and corresponds to the position below the last plastic bottle body.

[0010] As a further optimization of this solution, the lower surface of the limiting baffle is connected to the frame on both sides of the conveyor belt by a number of spaced vertical telescopic connecting rods.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0012] This invention utilizes an adjustable positioning plate located inside the plastic bottle and a movable arc-shaped guide plate located outside the plastic bottle to guide the unloading of the plastic bottles. Initially, the movable arc-shaped guide plate moves outward to its initial position under the action of the piston rod, without affecting the rotating robotic arm that flips the plastic bottles downward. After flipping, the last plastic bottle in the series presses backward against the pressure plate of the pressure-type limit switch. The pressure plate contacts the contact point, generating an electrical signal. This signal is transmitted to the control panel, which then controls the electric cylinder to move the piston rod inward, thereby moving the damping buffer strip of the movable arc-shaped guide plate inward to fit against the outer surface of each plastic bottle. The controller opens the gripper of the rotating robotic arm, and the plastic bottle falls along the moving arc-shaped guide plate. During this process, the plastic bottle is limited by an adjustable positioning plate at the rear, while the front of the plastic bottle is stabilized by a damping buffer strip. Finally, it enters the conveyor belt below. At this point, the plastic bottle at the rear detaches from the pressing plate, and the pressing plate curls outward again, away from the contact point, and no longer generates an electrical signal. The control panel controls the electric cylinder to drive the piston rod outward, causing the moving arc-shaped guide plate to return to its initial position. The plastic bottle moves forward under the drive of the conveyor belt. During this process, it is limited by adjustable height limit baffles on both sides to prevent the plastic bottle from tipping over on the conveyor belt if it is too long, which would affect the transportation efficiency and cause material waste. Attached Figure Description

[0013] Figure 1 This is a schematic diagram showing the position of the plastic bottle when the arc-shaped guide plate of this utility model is pushed inward;

[0014] Figure 2 This is a schematic diagram showing the position of the plastic bottle when the arc-shaped guide plate of this utility model is pushed inward;

[0015] Figure 3 This is a schematic diagram showing the position of the plastic bottle when the arc-shaped guide plate of this utility model is pulled outward;

[0016] Figure 4 This is a schematic diagram of the outer side structure of the adjustable positioning plate of this utility model;

[0017] In the diagram: 1. Film blowing machine; 2. Conveyor chain; 3. Plastic bottle; 4. Rotating robotic arm; 5. Controller; 6. Limit baffle; 7. Arc-shaped guide plate; 8. Connecting rod; 9. Push-pull plate; 10. Electric cylinder; 11. Support plate; 12. Control panel; 13. Damping buffer strip; 14. Adjustable positioning plate; 15. Vertical telescopic connecting rod; 16. Horizontal telescopic connecting rod; 17. Pressure plate type limit switch. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0019] To address the issues of existing equipment lacking a dedicated material feeding guide structure and the fact that during rotation, to prevent the bottom of the bottle from colliding with the conveyor belt frame, there is typically a 5-10 cm height difference between the conveyor belt and the limit rotation position. This causes the plastic bottles, when formed under the robotic arm, to wobble during their descent, sometimes even tipping to the sides. Furthermore, taller plastic bottles are prone to tipping over on the conveyor belt, affecting transportation efficiency. Tilted bottles fall onto the factory floor, causing pollution, waste of raw materials, and environmental problems.

[0020] like Figure 1 As shown, this application includes a blown film machine 1. A conveyor chain 2 is provided below the outlet of the blown film machine 1. Plastic bottles 3 are inverted above the conveyor chain 2 through equidistantly spaced die heads. Several parallel rotating robotic arms 4 are provided on one side of the conveyor chain 2. A controller 5 is connected to the side of the rotating robotic arms 4. A conveyor belt is provided below one side of the rotating robotic arms 4. Limiting baffles 6 are provided above the frames on both sides of the conveyor belt, except for the plastic bottle 3 flipping area. A feeding guide assembly is provided above the plastic bottle 3 flipping area on both sides of the conveyor belt. The feeding guide assembly includes an adjustable positioning plate 14 located inside the plastic bottle 3 and a movable arc-shaped guide plate 7 located outside the plastic bottle 3.

[0021] like Figure 2 As shown, the movable arc guide plate 7 is semi-circular in shape and has vertical through grooves that are equally spaced around the inner arc surface. Damping buffer strips 13 with rough outer surfaces are bonded and fixed inside the vertical through grooves. The upper and lower ends of the damping buffer strips 13 extend out of the outer side of the movable arc guide plate 7. The rear side of the movable arc guide plate 7 is connected to the inner side of the push-pull plate 9 through the connecting rod 8. The outer side of the push-pull plate 9 is connected to the telescopic piston rod of the electric control cylinder 10.

[0022] The electrically controlled cylinder 10 is mounted on the outside of the conveyor belt via a bracket plate 11, and a control panel 12 is also provided on the upper surface of the bracket plate 11.

[0023] like Figure 3 As shown, both ends of the rear side of the adjustable positioning plate 14 are connected to the side of the frame plate of the conveyor chain 2 through the horizontal telescopic connecting rod 16, and the lower surface of the limiting baffle 6 is connected to the frame on both sides of the conveyor belt through several vertical telescopic connecting rods 15 at intervals.

[0024] like Figure 4 As shown, a blind groove is provided on the outer side of the adjustable positioning plate 14 at the end opposite to the running direction of the conveyor belt. A pressure plate type limit switch 17 is embedded in the blind groove. The pressure plate of the pressure plate type limit switch 17 is raised outward and corresponds to the position below the last plastic bottle 3.

[0025] Specifically, depending on the size of the plastic bottles 3 to be transported, the front and rear positions of the adjustable positioning plate 14 are adjusted by the horizontal telescopic connecting rod 16, and the height of the limit baffles 6 on both sides is adjusted by the vertical telescopic connecting rod 15. At the same time, the height of the movable arc guide plate 7 is adjusted by the support legs of the frame plate 11.

[0026] During actual material feeding, in the initial state, the movable arc-shaped guide plate 7 moves outward to its initial position under the action of the piston rod. This does not affect the rotating robotic arm 4, which rotates the plastic bottle 3 downward. After rotation, the plastic bottle 3 located at the rear presses backward against the pressure plate of the pressure plate type limit switch 17. When the pressure plate is pressed, it contacts the contact point, generating an electrical signal. The electrical signal is transmitted to the control panel 12 through the circuit. The control panel 12 controls the electric cylinder 10 to move the piston rod inward, which in turn moves the damping buffer strip 13 of the movable arc-shaped guide plate 7 inward to fit against the outer side of each plastic bottle 3. At this time, the controller 5 opens the gripper of the rotating robotic arm 4, and the plastic bottle 3 falls along the movable arc-shaped guide plate 7. During the process, the plastic bottle 3... The plastic bottle 3 is limited by the adjustable positioning plate 14, and the front of the plastic bottle 3 is stabilized by the damping buffer strip 13. Finally, it enters the conveyor belt below. At this time, the plastic bottle 3 at the rear detaches from the pressing plate, the pressing plate curls outward again, away from the contact point, and no longer generates an electrical signal. The control panel 12 controls the electric cylinder 10 to drive the piston rod to move outward, so that the moving arc guide plate 7 returns to the initial position. The plastic bottle 3 moves forward under the drive of the conveyor belt. During the process, the limiting baffles 6 on both sides limit the plastic bottle 3 to prevent it from tipping over on the conveyor belt if it is too long. In this way, the plastic bottle 3 will not fall outside the conveyor belt during the entire feeding process, so that each plastic bottle 3 can be used and there will be no waste of raw materials, which has a good environmental protection effect.

[0027] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0028] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly material feeding and guiding structure for plastic bottle production, comprising a blown film machine, a conveyor chain located below the outlet of the blown film machine, plastic bottles being inverted and loaded above the conveyor chain via equidistantly spaced die heads, a plurality of parallel rotating robotic arms located on one side of the conveyor chain, a controller connected to the side of each rotating robotic arm, and a conveyor belt located below one side of each rotating robotic arm, characterized in that: Limiting baffles are installed above the frames on both sides of the conveyor belt, except for the plastic bottle turning area. A feeding guide assembly is provided above the plastic bottle turning area on both sides of the conveyor belt. The feeding guide assembly includes an adjustable positioning plate located inside the plastic bottle and a movable arc-shaped guide plate located outside the plastic bottle.

2. The down guide structure for the production of environment-friendly plastic bottles according to claim 1, characterized in that: The movable arc-shaped guide plate is semi-circular in shape and has vertical through grooves machined at equal intervals on its inner arc surface. Each vertical through groove has a damping buffer strip with a rough outer surface bonded and fixed inside. The upper and lower ends of the damping buffer strip extend outward from the movable arc-shaped guide plate. The rear side of the movable arc-shaped guide plate is connected to the inner side of the push-pull plate via a connecting rod. The outer side of the push-pull plate is connected to the telescopic piston rod of the electric cylinder.

3. The material feeding guide structure for environmentally friendly plastic bottle production according to claim 2, characterized in that: The electronically controlled cylinder is mounted on the outside of the conveyor belt via a bracket plate, and a control panel is also provided on the upper surface of the bracket plate.

4. The material feeding guide structure for environmentally friendly plastic bottle production according to claim 3, characterized in that: Both ends of the rear side of the adjustable positioning plate are connected to the side of the frame plate of the conveyor chain via transverse telescopic connecting rods. A blind groove is provided on the outer side of the adjustable positioning plate at the end opposite to the running direction of the conveyor belt. A pressure plate type limit switch is embedded in the blind groove. The pressure plate of the pressure plate type limit switch is raised outward and corresponds to the position below the last plastic bottle body.

5. The material feeding guide structure for environmentally friendly plastic bottle production according to claim 4, characterized in that: The lower surface of the limiting baffle is connected to the frame on both sides of the conveyor belt by a number of vertical telescopic connecting rods at intervals.

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