A feeding and discharging device of a combined rod plastic spraying production line

Abstract

The application discloses a feeding and discharging device of a combined rod plastic spraying production line and relates to the technical field of the combined rod plastic spraying production line.The feeding and discharging device solves the problem that the existing plastic spraying production line is not suitable for combined rods.The feeding and discharging device comprises a suspension travelling crane, a ground rail travelling crane and a lifting appliance.The suspension travelling crane is located above a suspension conveyor, the ground rail travelling crane is located below the suspension conveyor, and the suspension travelling crane is wider than the ground rail travelling crane.The feeding and discharging device carries workpieces through the lifting appliance, the loading of the workpieces from the lifting appliance can be carried out in advance, the unloading work can be carried out after the workpieces are cooled after being discharged, the feeding and discharging time is not occupied, the work efficiency is improved, the feeding and discharging of the lifting appliance is realized through the cooperation of the suspension travelling crane and the ground rail travelling crane, the automation degree is high, and the feeding and discharging device is suitable for combined rods with large volume and heavy weight.

Description

Technical Field

[0001] This invention relates to the field of composite rod powder coating production line technology, and more specifically to a loading and unloading device for a composite rod powder coating production line. Background Technology

[0002] Integrated poles, as the name suggests, combine various poles such as streetlights, signs, traffic lights, and surveillance cameras, burying overhead lines underground and transforming the "forest of poles" into a more open space. Various devices find their place on these convenient integrated poles, leading to intelligent urban road space management and services. To put it figuratively, integrated poles are like well-furnished apartments, facilitating the "move-in ready" installation of power lines, traffic lights, charging stations, environmental sensing and measurement systems, mini 5G base stations, and other facilities, equipment, or innovative applications.

[0003] After the assembly rod and its accessories are manufactured, they need to be coated with an anti-corrosion powder coating. Currently, there is no automated powder coating production line specifically for assembly rods, but existing automated powder coating production lines for other workpieces can be used as a reference. For example, patent application CN 111760728 A discloses a powder coating production line for automotive fuel lines, including a suspended conveyor, a curing chamber, a powder coating chamber, a heating chamber, a loading station, a cooling chamber, an inspection station, and a unloading station. The suspended conveyor is a continuous, looping conveyor line. Several hanging rods are suspended from the bottom of the suspended conveyor, with hook-shaped lower ends. The hanging rods are connected to detachably connected lifting rings at the top of the automotive fuel line via their lower ends. The bottom of the lifting rings has external threads that match the threaded holes at the top of the automotive fuel line. The suspended conveyor passes sequentially through the powder coating chamber, curing chamber, and cooling chamber. Before entering the powder coating chamber, the suspended conveyor passes through the loading station. After exiting the cooling chamber, the suspended conveyor passes sequentially through the inspection station and the unloading station.

[0004] Patent application CN 111760728 A describes a method for suspending workpieces by connecting a hanging rod at the bottom of a suspended conveyor to a detachable lifting ring at the top of a car refueling pipe. However, this method has the following problems when applied to a combined rod powder coating production line: (1) The combined rod is large and heavy, and cannot be hung on the suspended conveyor without hoisting equipment; (2) The workpiece is directly hung on the suspended conveyor, which requires time to hang each workpiece individually during loading, and requires powder coating, curing, and cooling before unloading, resulting in low work efficiency. Therefore, through persistent research and innovative modifications to the above-mentioned prior art, the applicant has designed a powder coating production line for combined rods. This powder coating production line includes a suspended conveyor, a loading and unloading device, a powder coating chamber, and a curing chamber. The present invention optimizes the structure of the loading and unloading device. Summary of the Invention

[0005] The purpose of this invention is to provide a loading and unloading device for a combined rod powder coating production line in order to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0007] A loading and unloading device for a combined rod powder coating production line. The device includes: a suspended trolley, a ground rail trolley, and a lifting device. The suspended trolley is located above a suspended conveyor, and the ground rail trolley is located below the suspended conveyor. The ground rail trolley includes two parallel ground rails embedded in the ground and a trolley body that slides along the ground rails. The trolley body includes a base frame erected between the two ground rails, drive rollers on the left and right sides of the bottom of the base frame, a drive motor for moving the drive rollers, and four lifting frames symmetrically arranged on the base frame. The lifting device includes a crossbar, crossbar hooks on the left and right sides of the top of the crossbar, and multiple workpiece hooks at the bottom of the crossbar. The crossbar hooks correspond to lifting rings at the bottom of the suspended conveyor and the suspended trolley. The crossbar can be horizontally supported on the top of the lifting frames, and the top of the lifting frames has a groove for accommodating the crossbar.

[0008] Furthermore, the lifting frame includes an n-shaped fixed frame vertically mounted on the base frame, and an electric cylinder mounted inside the n-shaped fixed frame. The telescopic rod of the electric cylinder passes through the top of the n-shaped fixed frame and is connected to the vertical support frame. The groove is provided on the inner side of the top of the vertical support frame.

[0009] Furthermore, a fixing sleeve is provided at the top of the n-shaped fixing frame, and the vertical support frame is located inside the fixing sleeve.

[0010] Furthermore, an angle steel is provided between the inner side of the vertical support frame and the bottom of the groove, and an opening for accommodating the angle steel is provided on the inner side of the top of the fixing sleeve.

[0011] Furthermore, a cross-shaped support column and / or a straight support column are provided between the two fixed sleeves on the same side.

[0012] Furthermore, a triangular stabilizing frame is provided on the left or right side of the bottom of the lifting frame.

[0013] Furthermore, a driven roller is provided at the middle position of the bottom of the base frame.

[0014] Furthermore, the opening of the crossbar hook faces away from the loading and unloading station of the overhead conveyor.

[0015] The beneficial effects of this invention are as follows:

[0016] (1) The loading and unloading device uses the lifting device to carry the workpiece. The workpiece can be loaded from the lifting device in advance, and the unloading can be done after the workpiece has cooled down. This does not take up the loading and unloading time and improves work efficiency.

[0017] (2) The loading and unloading device realizes the loading and unloading of the lifting device through the cooperation of the suspended trolley and the ground rail trolley. It has a high degree of automation and is suitable for large and heavy lifting rods.

[0018] (3) The suspended trolley is wider than the ground rail trolley, so the loading and unloading of materials between the suspended trolley and the ground rail trolley is not affected. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the working principle of the loading and unloading device of a composite rod powder coating production line according to the present invention.

[0020] Figure 2 This is a schematic diagram illustrating the working principle of the loading and unloading device of a composite rod powder coating production line according to the present invention.

[0021] Figure 3 This is a schematic diagram illustrating the working principle of the loading and unloading device of a composite rod powder coating production line according to the present invention.

[0022] Figure 4 This is a schematic diagram illustrating the working principle of the loading and unloading device of a composite rod powder coating production line according to the present invention.

[0023] Figure 5 This is a schematic diagram illustrating the working principle of the loading and unloading device of a composite rod powder coating production line according to the present invention.

[0024] Figure 6 This is a schematic diagram illustrating the working principle of the loading and unloading device of a composite rod powder coating production line according to the present invention.

[0025] Figure 7 This is a schematic diagram illustrating the working principle of the loading and unloading device of a composite rod powder coating production line according to the present invention.

[0026] Figure 8 This is a schematic diagram illustrating the working principle of the loading and unloading device of a composite rod powder coating production line according to the present invention.

[0027] Figure 9 This is a schematic diagram illustrating the working principle of the loading and unloading device of a composite rod powder coating production line according to the present invention.

[0028] Figure 10 This is a schematic diagram illustrating the working principle of the loading and unloading device of a composite rod powder coating production line according to the present invention.

[0029] Figure 11 This is a top view schematic diagram of a combined rod powder coating production line according to the present invention;

[0030] Figure 12 This is a schematic diagram of the structure of the ground rail trolley body of the loading and unloading device of a combined rod powder coating production line according to the present invention.

[0031] Figure 13 This is a schematic diagram of the lifting frame of the loading and unloading device for a combined rod powder coating production line according to the present invention.

[0032] Figure 14 This is another structural schematic diagram of the lifting frame of the loading and unloading device of a combined rod powder coating production line according to the present invention;

[0033] Figure 15 This is a schematic diagram of the structure of the lifting device for the loading and unloading of a combined rod powder coating production line according to the present invention;

[0034] Reference numerals: 1-Suspended crane; 2-Lifting device; 21-Crossbar; 22-Crossbar hook; 23-Workpiece hook; 3-Suspended conveyor; 4-Ground rail; 5-Ground rail crane body; 51-Base frame; 52-Drive roller; 53-Drive motor; 54-Lifting frame; 541-N-type fixed frame; 542-Electric cylinder; 543-Vertical support frame; 544-Fixing sleeve; 545-Cross-shaped support column; 546-Straight support column; 55-Gateway; 56-Angle steel; 57-Triangular stabilizing frame; 6-Loading and unloading station; 7-Workpiece to be powder coated; 8-Powder coated and cured workpiece; 9-Curing chamber; 10-Storage area; 11-Powder coating chamber. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] Example 1

[0038] like Figures 1 to 15As shown in the figure, this embodiment provides a loading and unloading device for a rod powder coating production line. The loading and unloading device includes: a suspended trolley 1, a ground rail trolley, and a lifting device 2. The suspended trolley 1 is located above the suspended conveyor 3, and the ground rail trolley is located below the suspended conveyor 3. The suspended trolley 1 is wider than the ground rail trolley. The ground rail trolley includes two parallel ground rails 4 embedded in the ground and a ground rail trolley body 5 that slides along the ground rails 4. The ground rail trolley body 5 includes a base frame 51 erected between the two ground rails 4, active rollers 52 set on the left and right sides of the bottom of the base frame 51, a drive motor 53 that drives the active rollers 52 to move, and four lifting frames 54 set on the base frame 51 and arranged symmetrically in the front, back, left, and right directions. The lifting device 2 includes a crossbar 21 and crossbar hooks 22 set on the left and right sides of the top of the crossbar 21 and multiple workpiece hooks 23 set at the bottom of the crossbar 21. The crossbar hooks 22 correspond to the lifting rings at the bottom of the suspended conveyor 3 and the suspended trolley 1. The crossbar 21 can be horizontally erected on the top of the lifting frame 54. The top of the lifting frame 54 is provided with a groove 55 to accommodate the crossbar 21.

[0039] Working Principle: Using the above technical solution, this loading and unloading device uses a lifting device 2 to carry the workpiece. Loading of the workpiece from the lifting device 2 can be done in advance, while unloading can be performed after cooling, without occupying loading and unloading time, thus improving work efficiency. The loading and unloading of the lifting device 2 is achieved through the cooperation of the suspended trolley 1 and the ground rail trolley, resulting in a high degree of automation and suitability for large and heavy composite rods. The suspended trolley 1 is wider than the ground rail trolley, therefore loading and unloading between the suspended trolley 1 and the ground rail trolley are not affected.

[0040] First, connect the horizontal hook 22 of the lifting device 2 to the lifting ring of the overhead crane 1, and then hang the workpieces 7 to be powder coated one by one on the workpiece hook 23 of the lifting device 2. When loading and unloading are required, follow these steps:

[0041] (1) As Figure 1 As shown, the ground rail trolley is driven between the loading and unloading stations 6 of the overhead trolley 1 and the overhead conveyor 3.

[0042] (2) Figure 2 As shown, the overhead crane 1 drives the lifting device 2 to move towards the loading and unloading station 6 of the overhead conveyor 3 until it reaches the top of the lifting frame 54 on the rear side of the ground rail crane. Then, the lifting ring of the overhead crane 1 lowers the height, driving the lifting device 2 to also lower until it falls into the trough 55 at the top of the lifting frame 54.

[0043] (3) Figure 3 As shown, the lifting frame 54 on the rear side of the ground rail trolley moves slightly upward, causing the lifting device 2 to rise and the crossbar hook 22 to separate from the lifting ring of the suspension trolley 1. The ground rail trolley then moves towards the loading / unloading station 6 of the suspension conveyor 3, causing the crossbar hook 22 of the lifting device 2 to completely separate from the lifting ring of the suspension trolley 1.

[0044] (4) Figure 4 As shown, the rear lifting frame descends to the initial position, while the lifting ring of the overhead crane 1 rises until it is higher than the lifting device 2, and then the overhead crane 1 travels in a direction away from the loading and unloading station 6 of the overhead conveyor 3.

[0045] (5) Figure 5 As shown, the ground rail trolley moves to the loading / unloading station 6 of the overhead conveyor 3, and at the same time, the overhead conveyor 3 moves to transfer the powder-coated and cured workpiece 8 out of the curing chamber 9 until it moves to the loading / unloading station 6 of the overhead conveyor 3, located in front of the ground rail trolley.

[0046] (6) Figure 6 As shown, the ground rail trolley moves towards the suspended trolley 1 until the front lifting frame 54 reaches directly below the lifting device 2 on the suspended transport vehicle 3, and then the front lifting frame 54 rises until the lifting device 2 falls into the groove 55 at the top of the lifting frame 54.

[0047] (7) Figure 7 As shown, the front lifting frame 54 moves slightly upward, causing the lifting device 2 to rise and separate the crossbar hook 22 from the lifting ring of the suspension trolley 1. The ground rail trolley then moves to the rear, causing the crossbar hook 22 of the lifting device 2 to completely disengage from the lifting ring of the suspension trolley 1. After that, the front lifting frame 54 descends to return to its initial height.

[0048] (8) Figure 8 As shown, the ground rail trolley moves forward until the rear lifting frame 54 moves to a position close to the suspended conveyor 3. Then the rear lifting frame 54 rises to the position corresponding to the hanging ring of the suspended conveyor 3. After that, the ground rail trolley moves forward until the crossbar hook 22 enters the hanging ring of the suspended conveyor 3. The rear lifting frame 54 then descends, and the lifting device 2 is hooked on the hanging ring of the suspended conveyor 3.

[0049] (9) such as Figure 9 As shown, the ground rail trolley travels in the direction away from the loading and unloading station 6 of the overhead conveyor 3 until the front lifting frame 54 moves to a position close to the lower right of the hanging ring of the overhead trolley 1. Then the front lifting frame 54 rises to the position corresponding to the hanging ring of the overhead trolley 1. After that, the ground rail trolley moves forward until the crossbar hook 22 enters the hanging ring of the overhead trolley 1. The front lifting frame 54 then descends, and the lifting device 2 is hooked on the hanging ring of the overhead conveyor 3.

[0050] (10) such as Figure 10 As shown, the overhead crane 1 drives the hoist 2 to move away from the loading / unloading station 6 of the overhead conveyor 3 until it reaches the storage area 10. At the same time, the overhead conveyor 3 drives the workpiece 7 to be powder coated to the powder coating chamber 11 for powder coating.

[0051] After the powder-coated and cured workpiece has cooled, it is removed from the hanger 2. It should be noted that the above loading and unloading process is based on the orientation of the opening of the crossbar hook 22 towards the loading / unloading station 6 away from the overhead conveyor 3. It is understood that when the opening direction of the crossbar hook 22 is reversed, some steps of the loading and unloading process need to be slightly adjusted. Furthermore, when hanging composite rod accessories on the hanger 2, each composite rod accessory can be hung on a row of workpiece hooks 23 provided on the hanger 2; when hanging the composite rod body on the hanger 2, both ends of the composite rod body can be detachably connected to the workpiece hooks 23 at both ends of the hanger 2, and the middle workpiece hooks 23 can be temporarily removed to avoid scratching the composite rod body and affecting the powder coating effect.

[0052] It should be noted that the specific structures of the overhead crane 1 and the overhead conveyor 3 are not the focus of this invention, and can be set up with reference to existing technology, and will not be described in detail here. To facilitate understanding of the specific application environment of the loading and unloading device of this invention, Figure 11 A schematic diagram of a combined rod powder coating production line equipped with the loading and unloading device of the present invention is shown, but the specific structure of the combined rod powder coating production line is not the focus of this invention, and the applicant will describe it in detail in another patent application.

[0053] Example 2

[0054] Based on Example 1, this example provides a detailed description of the specific structure of the lifting frame 54.

[0055] like Figure 13 As shown, the lifting frame 54 includes an n-shaped fixed frame 541 vertically mounted on the base frame 51, and an electric cylinder 542 mounted inside the n-shaped fixed frame 541. The telescopic rod of the electric cylinder 542 passes through the top of the n-shaped fixed frame 541 and is connected to the vertical support frame 543. A groove 55 is provided on the inner side of the top of the vertical support frame 543.

[0056] Working principle: When the lifting device 2 is mounted on top of the lifting frame 54 and needs to be hooked onto the lifting ring of the overhead crane 1 or the overhead conveyor 3, the telescopic rod of the electric cylinder 542 extends, lifting the vertical support frame 543 and the support groove 55, thereby driving the lifting device 2 to rise, and then continuing the lifting action of the lifting device 2. After the lifting device 2 is hooked onto the overhead crane 1 or the overhead conveyor 3, the telescopic rod of the electric cylinder 542 retracts, and the vertical support frame 543 and the support groove 55 fall back to their original positions. Although the lifting frame 54 provided in this embodiment can complete the corresponding operation, after repeatedly lifting heavy composite poles, the lifting frame 54 may become tilted, affecting subsequent lifting operations.

[0057] Example 3

[0058] Based on Example 1, this example provides a detailed description of another specific structure of the lifting frame 54.

[0059] like Figure 14 As shown, the lifting frame 54 includes an n-shaped fixing frame 541 vertically mounted on the base frame 51, and an electric cylinder 542 disposed within the n-shaped fixing frame 541. The telescopic rod of the electric cylinder 542 passes through the top of the n-shaped fixing frame 541 and is connected to a vertical support frame 543. A groove 55 is provided on the inner side of the top of the vertical support frame 543. A fixing sleeve 544 is provided on the top of the n-shaped fixing frame 541, and the vertical support frame 543 is located inside the fixing sleeve 544.

[0060] Working principle: When the lifting device 2 is erected on top of the lifting frame 54 and needs to be hooked onto the lifting ring of the suspended trolley 1 or the suspended conveyor 3, the telescopic rod of the electric cylinder 542 extends, lifting the vertical support frame 543, which in turn drives the lifting device 2 to rise away from the trough 55. The lifting device 2 continues to be suspended, but throughout the process, it remains within the trough 55 to prevent it from falling. After the lifting device 2 is hooked onto the suspended trolley 1 or the suspended conveyor 3, the telescopic rod of the electric cylinder 542 retracts, and the vertical support frame 543 falls back to its original position. The n-type fixing frame 541 serves to fix the electric cylinder 542. The fixing sleeve 544 is fixed to the n-type fixing frame 541, protecting and positioning the vertical support frame 543 to prevent it from tilting during the ascent, which would affect the lifting of the lifting device 2. The trough 55 is used to support the lifting device 2, providing stable support as it moves with the ground rail trolley.

[0061] Furthermore, an angle steel 56 is provided between the inner side of the vertical support frame 543 and the bottom of the groove 55 to reinforce the groove 55, making the support of the groove 55 more stable. An opening for accommodating the angle steel 56 is provided on the inner side of the top of the fixing sleeve 544, which facilitates the raising and lowering of the vertical support frame 543, the angle steel 56, and the crossbar 21.

[0062] Furthermore, a cross-shaped support column 545 and / or a straight support column 546 are provided between the two fixed sleeves 544 on the same side to reinforce the lifting frame 54 and prevent the lifting frame 54 from tilting and affecting the hanging of the lifting device 2.

[0063] Furthermore, a triangular stabilizing frame 57 is provided on the left or right side of the bottom of the lifting frame 5 to reinforce the lifting frame 54 and prevent the lifting frame 54 from tilting and affecting the hanging of the lifting device 2.

[0064] Furthermore, a driven roller (not shown) is provided at the middle position of the bottom of the base frame 51. Since the base frame 51 is relatively wide, the driven roller can support the middle position of the base frame 51 and prevent the middle of the base frame 51 from collapsing.

Claims

1. A loading and unloading device for a rod powder coating production line, characterized in that, include: The system comprises a suspended trolley, a ground rail trolley, and a lifting device. The suspended trolley is located above the suspended conveyor, and the ground rail trolley is located below the suspended conveyor. The suspended trolley is wider than the ground rail trolley. The ground rail trolley includes two parallel ground rails embedded in the ground and a trolley body that slides along the ground rails. The ground rail trolley body includes a base frame erected between the two ground rails, drive rollers on the left and right sides of the bottom of the base frame, a drive motor for moving the drive rollers, and four lifting frames symmetrically arranged on the base frame. The lifting device includes a crossbar, crossbar hooks on the left and right sides of the top of the crossbar, and multiple workpiece hooks at the bottom of the crossbar. The crossbar hooks correspond to the lifting rings at the bottom of the suspended conveyor and the suspended trolley. The crossbar can be horizontally mounted on the top of the lifting frames, and the top of the lifting frames is provided with a groove to accommodate the crossbar. A triangular stabilizing frame is provided on the left or right side of the bottom of the lifting frame; A driven roller is provided at the middle position of the bottom of the base frame.

2. The loading and unloading device for a composite rod powder coating production line according to claim 1, characterized in that, The lifting frame includes an n-shaped fixed frame vertically mounted on the base frame, and an electric cylinder mounted inside the n-shaped fixed frame. The telescopic rod of the electric cylinder passes through the top of the n-shaped fixed frame and is connected to the vertical support frame. The groove is provided on the inner side of the top of the vertical support frame.

3. The loading and unloading device for a composite rod powder coating production line according to claim 2, characterized in that, The top of the n-shaped fixing frame is provided with a fixing sleeve, and the vertical support frame is located inside the fixing sleeve.

4. The loading and unloading device for a composite rod powder coating production line according to claim 3, characterized in that, An angle steel is provided between the inner side of the vertical support frame and the bottom of the groove, and an opening for accommodating the angle steel is provided on the inner side of the top of the fixing sleeve.

5. The loading and unloading device for a composite rod powder coating production line according to claim 3, characterized in that, A cross-shaped support column and / or a straight support column are provided between the two fixed sleeves on the same side.

6. The loading and unloading device for a composite rod powder coating production line according to claim 1, characterized in that, The opening of the crossbar hook faces away from the loading and unloading station of the overhead conveyor.

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