Classified conveying device for PET (polyethylene terephthalate) film-coated cartons
By adopting an acute-angle connection design between the first and second conveyors in the carton sorting and conveying device, combined with photoelectric sensors and a pushing mechanism, the problems of complex device structure and difficult maintenance in the prior art are solved, and efficient carton sorting in a compact workshop layout is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG WUYI ZHANGSI PACKAGING IND CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-12
AI Technical Summary
Existing cardboard box sorting devices have a variety of structures, are difficult to install and maintain, and are not suitable for small or compact workshop layouts.
The system employs an acute-angle connection design between the first and second conveyors, combined with photoelectric sensors and a pushing mechanism, and is controlled by a controller to achieve the classified conveying of cartons of different heights.
It achieves a compact, adaptable, and easy-to-maintain carton sorting system, suitable for small workshop layouts.
Smart Images
Figure CN224222044U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of carton sorting equipment, specifically to a sorting and conveying device for PET-coated cartons. Background Technology
[0002] In the process of cardboard box production or logistics transportation, cardboard boxes of the same size need to be stacked for production or logistics management purposes. This requires classifying cardboard boxes of different sizes. Manually classifying cardboard boxes of different sizes has disadvantages such as high labor intensity and low efficiency. Currently, mechanical classification devices are commonly used to classify cardboard boxes of different sizes.
[0003] Existing technologies, such as the patent with publication number CN115488052A, disclose a packaging carton sorting and conveying device and its usage method. This device achieves sorting and conveying of cartons of different sizes by setting up photoelectric proximity switches, a first sorting conveyor belt, a second sorting conveyor belt, and a pushing mechanism on the conveying section. However, in practical production, this conveying device has the following shortcomings: it includes a linkage mechanism (worm gear, belt drive), a pushing mechanism (sliding rod, spring), multiple conveyor belts, and sensors, resulting in numerous mechanical parts, making installation and maintenance difficult and leading to a high failure rate; the sorting conveyor belts are arranged on both the front and rear sides, requiring a large space for the base, making it unsuitable for small or compact workshop layouts. Therefore, we propose a sorting and conveying device for PET-coated cartons. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a sorting and conveying device for PET coated cartons, which can make the structure of the conveying device more compact and more adaptable.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a sorting and conveying device for PET-coated cartons, comprising a first conveyor, a second conveyor, multiple photoelectric sensors, a pushing mechanism, and a controller; the head end of the second conveyor is connected to the middle of the first conveyor, and the pushing mechanism is disposed on the first conveyor and located on the opposite side of the connection between the first and second conveyors; multiple photoelectric sensors are movably distributed on both sides of the head end of the first conveyor, and several photoelectric sensors on the same side are distributed longitudinally; the angle between the conveying direction of the first conveyor and the conveying direction of the second conveyor is an acute angle; the photoelectric sensors and the pushing mechanism are both connected to the controller via circuitry.
[0006] Preferably, the angle between the conveying direction of the first conveyor and the conveying direction of the second conveyor is in the range of 45° to 60°.
[0007] Preferably, the pushing mechanism includes a mounting plate fixedly disposed on the left side of the first conveyor and a push rod cylinder, a fixed seat, a rotating shaft, and a guide assembly mounted on the mounting plate. The fixed seat is fixedly disposed, and the guide assembly includes a guide plate and a hinge seat. The piston rod of the push rod cylinder is rotatably connected to the guide plate through the hinge seat, and one end of the guide plate in the length direction is rotatably connected to the fixed seat through the rotating shaft.
[0008] Preferably, the guide assembly further includes a plurality of rollers, which are movably distributed on the right side of the guide plate along the length of the guide plate.
[0009] Preferably, the hinge seat is located at the middle of the left end of the guide plate.
[0010] Preferably, it further includes a gate device located at the junction of the first conveyor and the second conveyor; the gate device includes a baffle, a fixed shaft and a torsion spring, the fixed shaft is fixedly mounted on the first conveyor, the baffle is rotatably connected to the fixed shaft, and the torsion spring is located between the baffle and the fixed shaft.
[0011] Preferably, the length of the baffle is not greater than the width of the second conveyor.
[0012] Preferably, the roller is made of plastic.
[0013] Preferably, the first conveyor is further provided with main guard plates on both sides along its length; multiple photoelectric sensors are integrated on the main guard plates; and multiple through holes corresponding to the photoelectric sensors are provided on the main guard plates.
[0014] Preferably, the through hole has a longitudinal strip-shaped structure.
[0015] Compared with the prior art, the beneficial effects of this utility model are: by setting a pushing mechanism controlled by a controller and a photoelectric sensor on the opposite side of the connection between the first conveyor and the second conveyor, this sorting and conveying device can simultaneously sort and convey cartons of various heights. Compared with the prior art, this sorting and conveying device has the advantages of compact structure, strong adaptability and easy maintenance. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the front structure of the sorting and conveying device of this utility model;
[0017] Figure 2 This is a schematic diagram of the left side structure of the sorting and conveying device of this utility model;
[0018] Figure 3 This is a schematic diagram of the main protective plate structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the guide component structure of this utility model.
[0020] In the diagram: 1 First conveyor, 2 Second conveyor, 3 Main guard plate, 4 Secondary guard plate, 5 Photoelectric sensor, 6 Mounting plate, 7 Push rod cylinder, 8 Fixed seat, 9 Rotary shaft, 10 Guide assembly, 11 Gate device, 12 Carton, 31 Through hole, 101 Guide plate, 102 Roller, 103 Hinge seat. Detailed Implementation
[0021] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.
[0022] See Figure 1-4 In one embodiment of this utility model, a sorting and conveying device for PET-coated cartons includes: a first conveyor 1, a second conveyor 2, multiple photoelectric sensors 5, and a pushing mechanism. The first end of the second conveyor 2 is connected to the middle of the first conveyor 1. The pushing mechanism is located on the first conveyor 1 and on the opposite side of the connection between the first conveyor 1 and the second conveyor 2, and is used to push the cartons on the first conveyor 1 toward the second conveyor 2. Multiple photoelectric sensors 5 are arranged at the first end of the first conveyor 1 to determine the height of the cartons and provide a basis for the action of the pushing mechanism. In this embodiment, the sorting and conveying device also includes a controller. The controller is connected to the photoelectric sensors 5 and the pushing mechanism through a circuit. After receiving the signal emitted by the photoelectric sensors 5, the controller can control the pushing mechanism to perform corresponding actions.
[0023] In this embodiment, both the first conveyor 1 and the second conveyor 2 are roller conveyors, whose structures include drive rollers, frames, supports, and drive units. Roller conveyors are suitable for conveying items with flat bottoms and have advantages such as simple structure and reliable operation.
[0024] To ensure stability during carton transport, the first conveyor 1 has main guard plates 3 on both sides along its length, which serve as guides; while the second conveyor 2 also has auxiliary guard plates 4 on both sides along its length, which have the same function as the main guard plates 3.
[0025] It should be noted that, for reference Figure 1 and Figure 2 Based on the connection between the first conveyor 1 and the second conveyor 2, and the need to set a pushing mechanism on the opposite side of the connection between the first conveyor 1 and the second conveyor 2, the main guard plate 3 must be designed in segments. That is to say, the main guard plate 3 is composed of multiple spaced side plates, and the spacing between the side plates can provide space for the connection between the first conveyor 1 and the second conveyor 2 and the pushing mechanism.
[0026] Four photoelectric sensors 5 are provided and are all integrated on the main protective plate 3. The four photoelectric sensors 5 are divided into a high-level group and a low-level group. Both the high-level group and the low-level group are composed of a transmitter and a receiver, and are symmetrically distributed on both sides of the head end of the first conveyor 1. Furthermore, the high-level group adjacent to the second conveyor 2 is installed at a higher height than the low-level group far away from the second conveyor 2, forming a vertical detection gradient. When the carton enters the first conveyor 1 and flows, the photoelectric sensors 5 can determine the height of the carton by the degree of obstruction.
[0027] Furthermore, to facilitate the installation and firing of the photoelectric sensor 5, four through holes 31 corresponding to the positions of the photoelectric sensor 5 are provided on the main protective plate 3.
[0028] The pushing mechanism includes a mounting plate 6, a push rod cylinder 7, a fixed seat 8, a rotating shaft 9, and a guide assembly 10. The mounting plate 6 is fixedly installed on the left side of the first conveyor 1. The push rod cylinder 7, the fixed seat 8, the rotating shaft 9, and the guide assembly 10 are all fixedly mounted on the mounting plate 6. The guide assembly 10 includes a guide plate 101 and a hinge seat 103. The piston rod of the push rod cylinder 7 is rotatably connected to the guide plate 101 through the hinge seat 103. The hinge seat 103 is located at the middle of the left end of the guide plate 101. One end of the guide plate 101 in the length direction is rotatably connected to the mounting plate 6 through the fixed seat 8 and the rotating shaft 9. In the initial state, the main end face of the guide plate 101 is flush with the main end face of the corresponding side main guard plate 3. When the push rod cylinder 7 works, it can push the guide plate 101 to deflect towards the second conveyor 2. After the deflection is completed, the guide plate 101 can intercept the flow of the first conveyor 1, so that the cartons on the first conveyor 1 flow to the second conveyor 2.
[0029] Furthermore, in order to reduce excessive collisions and friction between the cartons and the guide plate 101 when they flow to the second conveyor 2, the guide assembly 10 also includes a plurality of rollers 102, which are movably distributed along the length of the guide plate 101 on the right side of the guide plate 101; the rollers 102 are made of plastic.
[0030] In one embodiment, the sorting and conveying device further includes a gate device 11 located at the junction of the first conveyor 1 and the second conveyor 2. The gate device 11 includes a baffle, a fixed shaft, and a torsion spring. The fixed shaft is fixedly mounted on the first conveyor 1, the baffle is rotatably connected to the fixed shaft, and the torsion spring is located between the baffle and the fixed shaft. Initially, the main end face of the baffle is flush with the main end face of the main guard plate 3, separating the first conveyor 1 from the second conveyor 2. When the push rod cylinder 7 is activated, the cartons flow towards the second conveyor 2 under the action of the guide assembly 10. Under the action of the conveying force, the cartons contact the baffle and apply a positive thrust to it, causing the baffle to swing open. After the cartons enter the second conveyor 2, the baffle automatically resets under the action of the torsion spring. It can be understood that the advantage of setting up the gate device 11 is that it maintains the independence of the first conveyor 1 during operation, preventing cartons from accidentally entering the second conveyor 2 when the push rod cylinder 7 is not activated, effectively ensuring the efficiency of carton sorting. The length of the baffle is not greater than the width of the second conveyor 2.
[0031] In one embodiment, the conveying direction of the first conveyor 1 and the conveying direction of the second conveyor 2 can form an angle of 45° to 60°. This design can effectively reduce the footprint of this sorting conveyor device, making it suitable for small or compact workshop layouts and improving the adaptability of carton production.
[0032] In one embodiment, the through hole 31 has a longitudinal strip structure, and the photoelectric sensor 5 corresponding to the position of the through hole 31 can be installed along the length direction of the through hole 31. In this way, the height of the photoelectric sensor 5 can be adjusted to meet the sorting needs of cartons of different heights during production, thereby further improving the adaptability of this sorting and conveying device. In this embodiment, the photoelectric sensors 5 are all movable.
[0033] The classification principle of this sorting conveyor is as follows: when the carton does not cover the low-level group or covers the low-level group but does not cover the high-level group, the push mechanism does not operate, and the first conveyor 1 can continue to convey the carton; when the carton covers both the high-level group and the low-level group at the same time, the push mechanism operates to make the carton flow to the second conveyor 2 and be output.
[0034] This technical solution, by setting a pushing mechanism controlled by a controller and a photoelectric sensor on the opposite side of the connection between the first and second conveyors, enables the sorting and conveying device to simultaneously sort and convey cartons of various heights. Compared with the prior art, this sorting and conveying device has the advantages of compact structure, strong adaptability, and easy maintenance.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A sorting and conveying device for PET-coated cartons, characterized in that: The system includes a first conveyor (1), a second conveyor (2), multiple photoelectric sensors (5), a pushing mechanism, and a controller. The head end of the second conveyor (2) is connected to the middle of the first conveyor (1). The pushing mechanism is located on the first conveyor (1) and on the opposite side of the connection between the first conveyor (1) and the second conveyor (2). Multiple photoelectric sensors (5) are movably distributed on both sides of the head end of the first conveyor (1), and several photoelectric sensors (5) on the same side are distributed longitudinally. The angle between the conveying direction of the first conveyor (1) and the conveying direction of the second conveyor (2) is an acute angle. The photoelectric sensors (5) and the pushing mechanism are both connected to the controller via circuits.
2. The sorting and conveying device for PET-coated cartons according to claim 1, characterized in that: The angle between the conveying direction of the first conveyor (1) and the conveying direction of the second conveyor (2) is in the range of 45° to 60°.
3. The sorting and conveying device for PET-coated cartons according to claim 1, characterized in that: The pushing mechanism includes a mounting plate (6) fixedly mounted on the left side of the first conveyor (1), a push rod cylinder (7), a fixed seat (8), a rotating shaft (9), and a guide assembly (10) mounted on the mounting plate (6). The fixed seat (8) is fixedly mounted, and the guide assembly (10) includes a guide plate and a hinge seat. The piston rod of the push rod cylinder (7) is rotatably connected to the guide plate through the hinge seat, and one end of the guide plate in the length direction is rotatably connected to the fixed seat (8) through the rotating shaft (9).
4. A sorting and conveying device for PET-coated cartons according to claim 3, characterized in that: The guide assembly (10) also includes a number of rollers, which are movably distributed on the right side of the guide plate along the length of the guide plate.
5. A sorting and conveying device for PET-coated cartons according to claim 3, characterized in that: The hinge seat is located at the middle of the left end of the guide plate.
6. A sorting and conveying device for PET-coated cartons according to claim 1, characterized in that: It also includes a gate device (11) located at the junction of the first conveyor (1) and the second conveyor (2); the gate device (11) includes a baffle, a fixed shaft and a torsion spring, the fixed shaft is fixedly mounted on the first conveyor (1), the baffle is rotatably connected to the fixed shaft, and the torsion spring is located between the baffle and the fixed shaft.
7. A sorting and conveying device for PET-coated cartons according to claim 6, characterized in that: The length of the baffle is not greater than the width of the second conveyor (2).
8. A sorting and conveying device for PET-coated cartons according to claim 4, characterized in that: The rollers are made of plastic.
9. A sorting and conveying device for PET-coated cartons according to claim 1, characterized in that: The first conveyor (1) is also provided with main guard plates (3) on both sides along its length; multiple photoelectric sensors (5) are integrated on the main guard plate (3); multiple through holes (31) corresponding to the photoelectric sensors (5) are opened on the main guard plate (3).
10. A sorting and conveying device for PET-coated cartons according to claim 9, characterized in that: The through hole (31) has a longitudinal strip structure.