A multi-directional spraying equipment and spraying process for plastic products

Abstract

The present invention discloses a multi-directional spraying device and a spraying process for plastic products, belonging to the technical field of spraying of plastic products, comprising two mounting frames and a conveyor belt mounted between the two mounting frames, a spraying chamber being mounted on the two mounting frames, a spraying mechanism being mounted in the spraying chamber, a plurality of mounting holes being opened on the surface of the conveyor belt along the length direction, an adsorption piece being arranged on the inner wall of each mounting hole, a rubber soft magnetic sheet matching the size of the mounting hole being adsorbed on the adsorption piece, a driving mechanism being arranged between the two mounting frames for driving the rubber soft magnetic sheet to rise and fall; the spraying mechanism comprising a plurality of spraying pipes, a mounting rod being symmetrically fixed at the bottom of each of the spraying pipes; when the present invention utilizes a conveyor belt to transport plastic products, the position of the plastic products can be automatically corrected, so that the position of the plastic products is consistent with the position of the plurality of spraying pipes, thereby ensuring that the thickness of the sprayed paint surface is uniform.

Description

Technical Field

[0001] The invention relates to the technical field of plastic product spraying, and in particular to multi-directional spraying equipment and a spraying process for plastic products. Background Art

[0002] Plastic products are a general term for daily and industrial products made of plastic as the main raw material, including products made of plastic by injection molding, blister molding and other processes. Plastic is a type of synthetic polymer material with plasticity. It, together with synthetic rubber and synthetic fiber, forms the three major synthetic materials that are indispensable in daily life. In the production and processing of plastic products, in order to ensure the beauty and wear resistance of plastic products, it is necessary to use a spraying device to spray paint on their surface;

[0003] During the spraying process, in order to speed up the spraying efficiency, the operator usually places the workpiece on a conveyor belt manually or using a robotic arm, and then uses the conveyor belt to send the plastic products into the spraying room for spraying. For some small and light plastic products, even if the initial placement is accurate, the vibration generated during the operation of the equipment during the transportation process will also cause the plastic products to shift, resulting in an inaccurate distance between the plastic products and the nozzle, and ultimately making the paint surface uneven in thickness, affecting product quality. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-directional spraying equipment and spraying process for plastic products to solve the following technical problems: during the transportation process, the vibration generated by the operation of the equipment will also cause the plastic products to shift, resulting in inaccurate distance between the plastic products and the spray head, and ultimately making the thickness of the paint surface uneven, affecting product quality.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A multi-directional spraying device for plastic products, comprising two mounting frames and a conveyor belt mounted between the two mounting frames, a spraying chamber being mounted on the two mounting frames, a spraying mechanism being mounted in the spraying chamber, a plurality of mounting holes being opened on the surface of the conveyor belt along the length direction, an adsorbent being disposed on the inner wall of each mounting hole, a rubber soft magnetic sheet matching the size of the mounting hole being adsorbed on the adsorbent, and a driving mechanism being disposed between the two mounting frames for driving the rubber soft magnetic sheet to rise and fall;

[0007] The spraying mechanism comprises a plurality of spraying pipes, each of which is symmetrically fixed with a mounting rod at the bottom, a correction rod is rotatably mounted between two mounting rods, and one end of the correction rod away from the mounting rod contacts the rubber soft magnetic sheet.

[0008] As a further solution of the present invention: a connecting shaft is fixed on one side of the bottom ends of the two mounting rods, and straight slots are opened on the two side walls of the correction rod close to one end of the mounting rod, and the connecting shaft is slidably connected to the straight slots.

[0009] As a further solution of the present invention: the spraying mechanism also includes a liquid inlet pipe fixed on the top wall of the spraying chamber, and a plurality of branch pipes are connected to the liquid inlet pipe, one end of the plurality of branch pipes are respectively connected to a plurality of spraying pipes, the plurality of spraying pipes are distributed in a circular array, and a plurality of nozzles are evenly installed in the vertical direction on the side wall of the spraying pipe facing the center of the circle.

[0010] As a further solution of the present invention: the driving mechanism includes a mounting plate fixed between two mounting frames, the mounting plate is located inside the conveyor belt, and an electric push rod is installed on the upper surface of the mounting plate, and the output shaft of the electric push rod is connected to a cylinder matching the size of the mounting hole.

[0011] As a further solution of the present invention: a magnetic piece is arranged on the top of the cylinder.

[0012] As a further solution of the present invention: the cylinder is a hollow structure, a rotating motor is installed in the cylinder, a through hole is opened on the top wall of the cylinder, and the output shaft of the rotating motor passes through the through hole and is connected to the magnetic member.

[0013] As a further solution of the present invention: two baffles are arranged between the two mounting frames.

[0014] A spraying process of a multi-directional spraying device for plastic products, comprising the following steps:

[0015] S1. Place the plastic product to be sprayed on the rubber soft magnetic sheet, and the conveyor belt stops moving after transporting the plastic product into the spraying room;

[0016] S2. The rubber soft magnetic sheet on which the plastic product is placed is raised by using a driving mechanism. When the rubber soft magnetic sheet is raised, one end of the plurality of correction rods is driven to move synchronously and gather together, so as to push the plastic product to the middle position of the rubber soft magnetic sheet;

[0017] S3. Use the spraying mechanism to complete multi-directional spraying of plastic products.

[0018] Beneficial effects of the present invention:

[0019] (1) The present invention is provided with a rubber soft magnetic sheet, a spraying mechanism, a mounting rod and a correction rod. The rubber soft magnetic sheet is adsorbed in the mounting hole of the conveyor belt and is used to place plastic products. During the conveying process, the plastic products may be offset due to vibration. When the plastic products are moved into the spraying room, the conveyor belt stops moving. The rubber soft magnetic sheet with the plastic products is just located above the driving mechanism. The driving mechanism raises the rubber soft magnetic sheet and pushes the multiple correction rods to move. The multiple correction rods can push the displaced rubber products to the middle of the rubber soft magnetic sheet, so that the positions of the plastic products and the multiple spraying pipes are consistent, thereby ensuring that the thickness of the sprayed paint surface is uniform.

[0020] (2) The present invention provides a straight slot on the correction rod. When the rubber soft magnetic sheet continues to rise and causes the correction rod to tilt again, the correction rod will slide a certain distance under the action of gravity and thus detach from the surface of the plastic product, so that the plastic product can be fully sprayed, thereby ensuring the spraying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the spraying mechanism of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the installation rod and the correction rod of the present invention;

[0025] Figure 4 It is a schematic structural diagram of the correction rod and the connecting shaft of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the conveyor belt and the driving mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the internal structure of the cylinder of the present invention;

[0028] Figure 7 It is a position relationship diagram of the rubber soft magnetic sheet of the present invention and the correction rod at different heights.

[0029] In the figure: 1. mounting frame; 2. conveyor belt; 3. spraying room; 4. spraying mechanism; 401. liquid inlet pipe; 402. branch pipe; 403. spraying pipe; 404. nozzle; 5. rubber soft magnetic sheet; 6. mounting rod; 7. correction rod; 8. mounting plate; 9. electric push rod; 10. cylinder; 11. magnetic part; 12. rotating motor; 13. perforation; 14. baffle; 15. straight slot; 16. connecting shaft.

[0030] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size and shape of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-5 As shown, the present invention is a multi-directional spraying equipment for plastic products, comprising two mounting frames 1 and a conveyor belt 2 mounted between the two mounting frames 1, a spraying chamber 3 is mounted on the two mounting frames 1, a spraying mechanism 4 is mounted in the spraying chamber 3, a plurality of mounting holes are opened on the surface of the conveyor belt 2 along the length direction, an adsorption piece is arranged on the inner wall of each mounting hole, a rubber soft magnetic sheet 5 matching the size of the mounting hole is adsorbed on the adsorption piece, a driving mechanism is arranged between the two mounting frames 1 for driving the rubber soft magnetic sheet 5 to rise and fall; the spraying mechanism 4 comprises a plurality of spraying pipes 403, a mounting rod 6 is symmetrically fixed to the bottom of each spraying pipe 403, a correction rod 7 is rotatably mounted between the two mounting rods 6, and one end of the correction rod 7 away from the mounting rod 6 contacts the rubber soft magnetic sheet 5; the bottom ends of the two mounting rods 6 are close to each other A connecting shaft 16 is fixed on the near side, and a straight slot 15 is opened on the two side walls of the correction rod 7 close to one end of the mounting rod 6, and the connecting shaft 16 is slidably connected to the straight slot 15; the rubber soft magnetic sheet 5 is adsorbed in the mounting hole of the conveyor belt 2 for placing plastic products. During the transportation process, the plastic products may be offset due to vibration. When the plastic products are moved into the spraying room 3, the conveyor belt 2 stops moving, and the rubber soft magnetic sheet 5 with the plastic products is just located above the driving mechanism. The driving mechanism raises the rubber soft magnetic sheet 5 and pushes the multiple correction rods 7 to move. The multiple correction rods 7 can push the displaced rubber products to the middle of the rubber soft magnetic sheet 5, so that the position of the plastic products is consistent with the multiple spraying pipes 403, and the plastic products can be sprayed in multiple directions to ensure that the thickness of the sprayed paint surface is uniform.

[0033] See also Figure 1 and Figure 2The spraying mechanism 4 also includes a liquid inlet pipe 401 fixed on the top wall of the spraying chamber 3, and a plurality of branch pipes 402 are connected to the liquid inlet pipe 401, and one end of the plurality of branch pipes 402 is respectively connected to a plurality of spraying pipes 403, and the plurality of spraying pipes 403 are distributed in a circular array, and a plurality of nozzles 404 are evenly installed in the vertical direction on the side wall of the spraying pipe 403 facing the center of the circle; the liquid inlet pipe 401 is connected to an external paint source, and the paint is transported into the liquid inlet pipe 401, and then enters the spraying pipe 403 through the plurality of branch pipes 402, and finally sprayed out through the nozzle 404.

[0034] See also Figure 5 and Figure 6 The driving mechanism includes a mounting plate 8 fixed between two mounting frames 1, the mounting plate 8 is located inside the conveyor belt 2, and an electric push rod 9 is installed on the upper surface of the mounting plate 8, and the output shaft of the electric push rod 9 is connected to a cylinder 10 matching the size of the mounting hole; a magnetic member 11 is arranged on the top of the cylinder 10; the cylinder 10 is a hollow structure, and a rotating motor 12 is installed in the cylinder 10, and a through hole 13 is opened on the top wall of the cylinder 10, and the output shaft of the rotating motor 12 passes through the through hole 13 and is connected to the magnetic member 11; two baffles 14 are arranged between the two mounting frames 1.

[0035] A spraying process of a multi-directional spraying device for plastic products, comprising the following steps:

[0036] S1, placing the plastic product to be sprayed on the rubber soft magnetic sheet 5, and the conveyor belt 2 transports the plastic product into the spraying room 3 and then stops moving;

[0037] S2, using the driving mechanism to raise the rubber soft magnetic sheet 5 on which the plastic product is placed, when the rubber soft magnetic sheet 5 is raised, it will drive one end of the plurality of correction rods 7 to move synchronously and gather together, pushing the plastic product to the middle position of the rubber soft magnetic sheet 5;

[0038] S3, using the spraying mechanism 4 to complete the multi-directional spraying of the plastic product.

[0039] The working principle of the present invention is as follows: the rubber soft magnetic sheet 5 is adsorbed into the mounting hole of the conveyor belt 2, the plastic product is placed on the rubber soft magnetic sheet 5, and the conveyor belt 2 is started to convey the plastic product. During the conveying process, the plastic product may be offset due to vibration. When the plastic product moves into the spraying room 3, the conveyor belt 2 stops moving, and the rubber soft magnetic sheet 5 with the plastic product is just located above the driving mechanism. In the initial state, one end of the plurality of correction rods 7 is placed on the rubber soft magnetic sheet 5 (such as Figure 7 As shown in a), at this time, the magnetic member 11 is attracted to the rubber soft magnetic sheet 5, and the electric push rod 9 is started to raise the rubber soft magnetic sheet 5 and push the multiple correction rods 7 to move. The contact position between the correction rods 7 and the rubber soft magnetic sheet 5 changes. After the multiple correction rods 7 move to a horizontal state, the displaced rubber product can be pushed to the middle of the rubber soft magnetic sheet 5 (as shown in FIG. Figure 7 As shown in b), the position of the plastic product is consistent with the multiple spray pipes 403, and then the rubber soft magnetic sheet 5 is raised a short distance, and one end of the correction rod 7 is tilted upward. Since straight notches 15 are provided on both sides of the correction rod 7, under the action of gravity, the correction rod 7 will slide a distance and separate from the plastic product (as shown in Figure 7 As shown in c), the correction rod 7 does not block the plastic product, and then the rotating motor 12 is started to drive the rubber soft magnetic sheet 5 to rotate slowly, and the spraying mechanism 4 is cooperated to spray the plastic product in multiple directions to ensure that the thickness of the sprayed paint surface is uniform;

[0040] After spraying is completed, the output shaft of the electric push rod 9 is reset, the rubber soft magnetic sheet 5 and the correction rod 7 are also automatically reset, the conveyor belt 2 is started to send out the sprayed plastic product, the rubber soft magnetic sheet 5 will automatically separate from the magnetic part 11, repeat the above operation, and then the subsequent spraying can be carried out.

[0041] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A multi-directional spraying device for plastic products, comprising two mounting frames (1) and a conveyor belt (2) mounted between the two mounting frames (1). It is characterized in that A spray chamber (3) is installed on the two mounting frames (1) together, a spray mechanism (4) is installed in the spray chamber (3), a plurality of mounting holes are provided on the surface of the conveyor belt (2) along the length direction, an adsorption member is provided on the inner wall of each mounting hole, a rubber soft magnetic sheet (5) matching the size of the mounting hole is adsorbed on the adsorption member, and a driving mechanism is provided between the two mounting frames (1) for driving the rubber soft magnetic sheet (5) to rise and fall; The spraying mechanism (4) comprises a plurality of spraying tubes (403), a mounting rod (6) being symmetrically fixed at the bottom of each of the spraying tubes (403), a correction rod (7) being rotatably mounted between two of the mounting rods (6), and an end of the correction rod (7) away from the mounting rod (6) being in contact with the rubber soft magnetic sheet (5); A connecting shaft (16) is fixed to the side close to the bottom ends of the two mounting rods (6), and a straight slot (15) is provided on the two side walls of the correction rod (7) close to one end of the mounting rod (6), and the connecting shaft (16) is slidably connected to the straight slot (15); The spraying mechanism (4) further comprises a liquid inlet pipe (401) fixed on the top wall of the spraying chamber (3), the liquid inlet pipe (401) being connected to a plurality of branch pipes (402), one end of each of the plurality of branch pipes (402) being respectively connected to a plurality of spraying pipes (403), the plurality of spraying pipes (403) being distributed in a circular array, and a plurality of spray heads (404) being evenly mounted in a vertical direction on the side wall of the spraying pipe (403) facing the center of the circle; The driving mechanism comprises a mounting plate (8) fixed between two mounting frames (1), the mounting plate (8) being located inside the conveyor belt (2), and an electric push rod (9) being mounted on the upper surface of the mounting plate (8), the output shaft of the electric push rod (9) being connected to a cylinder (10) having a size matching that of the mounting hole.

2. A multi-directional spraying device for plastic products according to claim 1, It is characterized in that A magnetic piece (11) is provided on the top of the cylinder (10).

3. A multi-directional spraying device for plastic products according to claim 2, It is characterized in that The cylinder (10) is a hollow structure. A rotating motor (12) is installed in the cylinder (10). A through hole (13) is provided on the top wall of the cylinder (10). The output shaft of the rotating motor (12) passes through the through hole (13) and is connected to the magnetic member (11).

4. A multi-directional spraying device for plastic products according to claim 1, It is characterized in that Two baffles (14) are arranged between the two mounting frames (1).

5. The spraying process of the multi-directional spraying equipment for plastic products according to claim 1, It is characterized in that The following steps are involved: S1, placing the plastic product to be sprayed on the rubber soft magnetic sheet (5), and the conveyor belt (2) transports the plastic product into the spraying room (3) and then stops moving; S2, using a driving mechanism to raise the rubber soft magnetic sheet (5) on which the plastic product is placed, so that when the rubber soft magnetic sheet (5) is raised, one end of the plurality of correction rods (7) will be driven to move synchronously and gather together, thereby pushing the plastic product to the middle position of the rubber soft magnetic sheet (5); S3. Use the spraying mechanism (4) to complete multi-directional spraying of the plastic product.

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