Spraying equipment with adjustable inlet and outlet width

By designing spray equipment with adjustable inlet and outlet widths, using the combination of feeding parts and adjustment doors, combining detection light curtains and grating scales to achieve automatic adjustment, the problem of traditional equipment adapting to diverse workpiece sizes is solved, and production efficiency and spray quality are improved.

CN223249675UActive Publication Date: 2025-08-22HEBEI HANNA TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202422371641.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-27
Publication Date
2025-08-22
Estimated Expiration
2034-09-27

AI Technical Summary

Technical Problem

The import and export sizes of traditional spraying equipment are fixed, making it difficult to meet the requirements of diverse workpiece sizes, resulting in waste of energy and reduced spray quality.

Method used

Design a spraying equipment with adjustable inlet and outlet widths, using a combination of feeding parts, adjustment doors and telescopic parts, combining detection light curtains and grating scales to achieve automatic adjustment, ensuring stable conveying of workpieces and precise control of inlet and outlet widths.

Benefits of technology

It improves the adaptability of spraying equipment to different workpieces and the continuity of production processes, reduces energy waste, and ensures consistency of spraying quality and drying effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of spraying, and provides spraying equipment with adjustable inlet and outlet width, which comprises spraying equipment with a treatment space inside and an inlet and an outlet communicated with the treatment space; the feeding piece enters from the inlet, penetrates through the treatment space and then leaves from the outlet, and the feeding piece is used for fixing and conveying the sprayed workpiece to enter or leave the treatment space; the multiple adjusting doors are arranged on the spraying equipment in a sliding mode and used for controlling opening and closing of the inlet and the outlet. The multiple telescopic pieces are arranged on the spraying equipment, and one telescopic piece is used for driving one adjusting door to slide. By means of the technical scheme, the problems that in the prior art, the opening size of drying equipment is large, energy in the drying process is wasted, and the spraying quality is affected are solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of spraying, and in particular to spraying equipment with adjustable inlet and outlet widths. Background Art

[0002] In modern industrial manufacturing, workpieces vary greatly in width and size. For example, in the automotive industry, body parts, from tiny decorative strips to wide side panels, require spray coating. In furniture manufacturing, everything from narrow table and chair legs to wide tabletops and door panels also undergo spray coating. Traditional spray equipment with fixed-size inlets and outlets struggles to meet these diverse size requirements.

[0003] After the workpiece is sprayed, it needs to be dried. However, the opening size of each process equipment in the existing device is designed according to the maximum workpiece width. When a smaller workpiece appears, the opening size of each process equipment remains unchanged, which will waste the energy of the drying and curing furnace, the powder coating rate of the workpiece in the powder spraying room is low, and water vapor overflows from the pre-treatment equipment. Utility Model Content

[0004] The utility model provides a spraying device with adjustable inlet and outlet widths, which solves the problem in the related art that the opening size of the drying device is large, which wastes energy in the drying process and affects the spraying quality.

[0005] The technical solution of the utility model is as follows:

[0006] A spraying device with adjustable inlet and outlet widths, comprising:

[0007] A spraying device having a processing space therein and an inlet and an outlet communicating with the processing space;

[0008] A feeding piece, which enters from the inlet, passes through the processing space, and then leaves from the outlet, and is used to fix and transport the sprayed workpiece into or out of the processing space;

[0009] There are a plurality of regulating doors, which are slidably arranged on the spraying equipment, and the plurality of regulating doors are used to control the opening and closing of the inlet and the outlet;

[0010] There are several telescopic parts, which are arranged on the spraying equipment. One of the telescopic parts is used to drive one of the adjustment doors to slide.

[0011] As a further technical solution, the spraying equipment is one of a spray pre-treatment furnace, a drying and curing furnace or a powder spraying room.

[0012] As a further technical solution, it also includes:

[0013] A light curtain bracket is arranged on one side of the spraying equipment;

[0014] A detection light curtain is provided on the light curtain bracket. The feeding piece enters the processing space after passing through the detection light curtain. The detection light curtain is used to detect the width of the workpiece conveyed by the feeding piece.

[0015] The control element is used to receive the signal transmitted by the detection light curtain and control the opening and closing of the telescopic element through the signal.

[0016] As a further technical solution, it also includes:

[0017] There are several grating rulers, which are arranged on the spraying equipment;

[0018] The detection block is slidably arranged on the grating ruler, and one end of the detection block is fixed on the adjustment door. After the adjustment door slides, the grating ruler is used to record and transmit the position of the detection block and transmit the signal to the control component.

[0019] As a further technical solution, it also includes:

[0020] There are several C-shaped slides, which are arranged on the spraying equipment;

[0021] a first pulley, including a plurality of first pulleys, rotatably disposed on the regulating door, wherein the first pulleys slide in the C-shaped slideway;

[0022] An outer shield is arranged on the outside of the C-shaped slide, and the outer shield is used to prevent the first pulley from separating from the C-shaped slide.

[0023] As a further technical solution, it also includes:

[0024] The guide rod has two guide rods as a further technical solution to guide the sliding of the second pulley.

[0025] As a further technical solution, one of the inlet and the outlet is controlled by two regulating doors, and the telescopic parts of the two regulating doors are controlled separately by the control part.

[0026] As a further technical solution, the feeding piece includes:

[0027] A guide groove runs through the processing space, wherein a guide space is defined in the guide groove, and an opening communicating with the guide space is defined below the guide groove;

[0028] There are a plurality of first conveying members, which are slidably arranged in the guide space;

[0029] A plurality of connecting members, one end of which is hinged to the first conveying member;

[0030] There are a plurality of second conveying members, which are slidably arranged in the guide space and hinged to the other end of the first conveying member, and the plurality of the first conveying members and the plurality of the second conveying members are hinged in sequence with the connecting member interposed therebetween;

[0031] a fixed seat, disposed on the first conveying member, the fixed seat passing through the opening and leaving the guide space;

[0032] A fixing hook, one end of which is arranged on the fixing seat, and the fixing hook is used to fix the workpiece after spraying.

[0033] As a further technical solution, it also includes:

[0034] The third pulley and the fourth pulley are rotatably arranged on the first conveying member and the second conveying member respectively, and the third pulley and the fourth pulley are both in contact with the side wall of the guide groove.

[0035] The working principle and beneficial effects of the utility model are as follows:

[0036] In the present invention, a feeder secures the coated workpiece to its own position. The feeder extends through the processing space, providing stable securement and transport for the coated workpiece in and out of the spraying equipment. This stable transport reduces jitter or collisions during workpiece entry and exit, preventing damage to the spray coating on the workpiece and ensuring workpiece quality. The feeder utilizes a continuous feeding and delivery system. With adjustable inlet and outlet widths, the equipment can adapt to various sizes of coated workpieces. On a production line, workpieces of varying types and sizes may require drying. This adjustable inlet and outlet width allows the equipment to quickly adapt to different workpiece types, reducing production equipment setup time and improving the continuity and efficiency of the entire production process. For large workpieces, the inlet and outlet widths can be increased to facilitate entry and exit, eliminating the need for additional disassembly or specialized handling methods, thereby enhancing the equipment's compatibility with workpieces of varying sizes. The design of multiple adjustable doors and corresponding telescopic members allows for more precise control of the inlet and outlet. The telescopic members precisely drive the adjustable doors to slide, accurately controlling the opening and closing of the inlet and outlet. This helps to better control the environment inside the spray equipment, such as temperature, airflow, etc., to ensure consistent drying results. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The preferred embodiments will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0038] Figure 1 This is a schematic diagram of the structure of the utility model;

[0039] Figure 2 For this utility model Figure 1 A partial enlarged view of point A in the middle;

[0040] Figure 3 This is a schematic structural diagram of the adjusting door portion of the present invention;

[0041] Figure 4 For this utility model Figure 3 A partial enlarged view of point B in the middle;

[0042] Figure 5 For this utility model Figure 3 A partial enlarged view of point C in the middle;

[0043] Figure 6 It is a cross-sectional schematic diagram of the utility model;

[0044] Figure 7 For this utility model Figure 6 A partial enlarged view of point D in the middle;

[0045] Figure 8 This is a schematic diagram of the structure of the feeding member in the utility model;

[0046] Figure 9 This is a schematic diagram of the internal structure of the structural feeding member in the utility model;

[0047] Figure 10 It is a structural diagram of the grating ruler in the utility model.

[0048] In the figure: 1. Spraying equipment; 110. Processing space; 120. Inlet; 130. Outlet; 2. Feeding member; 3. Adjusting door; 301. Telescopic member; 410. Light curtain bracket; 420. Detection light curtain; 440. Grating ruler; 450. Detection block; 310. C-type slideway; 320. First pulley; 330. Outer shield; 340. Guide rod; 350. Guide space; 360. Second pulley; 210. Guide groove; 220. Guide space; 230. Opening; 240. First conveying member; 250. Connecting member; 260. Second conveying member; 270. Fixed seat; 280. Fixed hook; 291. Third pulley; 292. Fourth pulley. DETAILED DESCRIPTION

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, they can also be understood as further technical solutions without paying creative work. In some figures, components with the same structure or function are schematically illustrated, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0050] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0051] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0052] Reference Figures 1 to 10 , which is the first embodiment of the utility model, proposes a spraying equipment with adjustable inlet and outlet width, including: a processing space 110 and an inlet 120 and an outlet 130 connected to the processing space 110 inside the spraying equipment 1; a feeding piece 2 enters from the inlet 120 and passes through the processing space 110 and then leaves from the outlet 130, and the feeding piece 2 is used to fix and transport the sprayed workpiece into or out of the processing space 110; there are several adjusting doors 3, which are slidably arranged on the spraying equipment 1, and the several adjusting doors 3 are used to control the opening and closing of the inlet 120 and the outlet 130; there are several telescopic parts 301, which are arranged on the spraying equipment 1, and a telescopic part 301 is used to drive an adjusting door 3 to slide, and the spraying equipment is one of a spray pre-treatment, a drying and curing furnace or a powder spraying room.

[0053] In this embodiment, the spraying apparatus 1 can be a device for spraying workpieces, such as a pre-spraying device, a powder spraying booth, or a drying and curing oven. The pre-spraying device treats the workpiece surface to ensure better adhesion of the powder during spraying. The powder spraying booth and drying and curing oven correspond to the spraying and drying steps. The feeder 2 secures the sprayed workpiece to itself. The feeder 2 extends through the processing space 110 and stably secures and transports the sprayed workpiece in and out of the spraying apparatus 1. This stable transport method reduces shaking or collisions of the workpiece during entry and exit of the spraying apparatus 1, preventing damage to the spray coating on the workpiece and ensuring workpiece quality. The feeder 2 utilizes a continuous feeding and delivery method. Due to the adjustable width of the inlet and outlet 130, the device can adapt to various sizes of sprayed workpieces. On a production line, there may be a variety of workpiece types and sizes that require drying. This adjustable width design of the inlet and outlet 130 allows the device to quickly adapt to different workpieces, reducing production equipment setup time and improving the continuity and efficiency of the entire production process. For large workpieces, the width of the inlet and outlet 130 can be increased to facilitate the entry and exit of large workpieces without the need for additional disassembly of the workpieces or the use of special handling methods, thereby improving the compatibility of the equipment with workpieces of different specifications. The design of multiple adjustment doors 3 and corresponding telescopic parts 301 makes the control of the inlet and outlet 130 more precise. The telescopic parts 301 can accurately drive the adjustment doors 3 to slide, thereby accurately controlling the opening and closing degree of the inlet 120 and outlet 130. This helps to better control the environment inside the spraying equipment 1, such as temperature, airflow, etc., to ensure the consistency of the drying effect.

[0054] As a further technical solution, it also includes: a light curtain bracket 410 is arranged on one side of the spraying equipment 1; a detection light curtain 420 is arranged on the light curtain bracket 410, and the feeding part 2 enters the processing space 110 after passing through the detection light curtain 420, and the detection light curtain 420 is used to detect the width of the workpiece transported by the feeding part 2; the control part is used to receive the signal transmitted by the detection light curtain 420, and control the opening and closing of the telescopic part 301 through the signal.

[0055] In this embodiment, the detection light curtain 420 can accurately detect the width of the workpiece conveyed by the feeding member 2, and then transmit a signal to the control member, which then controls the opening and closing of the telescopic member 301 based on this signal. In this way, the width of the inlet and outlet 130 is automatically adjusted according to the width of the workpiece without the need for manual intervention. This greatly improves the degree of automation of the equipment, reduces the workload of manual operation and possible human errors. Due to the high-precision detection of the detection light curtain 420, the equipment can accurately adjust the width of the inlet and outlet 130 according to the actual width of the workpiece. This not only ensures that the workpiece can pass through the inlet and outlet 130 smoothly, but also adjusts the width of the inlet and outlet 130 to the degree that is most suitable for the workpiece, minimizes the loss of heat inside the spraying equipment 1 or unnecessary air flow interference, and further optimizes the drying effect. The light curtain bracket 410 provides a stable installation position for the detection light curtain 420. It is set on the side of the spraying equipment 1 to ensure that the detection light curtain 420 is in the appropriate detection position, so that the detection light curtain 420 can stably and accurately detect the width of the workpiece conveyed by the feeding member 2. This stable detection environment helps to improve the reliability of the detection results of the detection light curtain 420, thereby ensuring the normal operation of the entire inlet and outlet 130 width adjustment system.

[0056] As a further technical solution, it also includes: there are several grating rulers 440, which are arranged on the spraying equipment 1; the detection block 450 is slidably set on the grating ruler 440, and one end of the detection block 450 is fixed on the adjustment door 3. After the adjustment door 3 slides, the grating ruler 440 is used to record and transmit the position of the detection block 450 and transmit the signal to the control component.

[0057] In this embodiment, the arrangement of the grating scale 440 and the detection block 450 accurately records the position of the regulating door 3. As the regulating door 3 slides, the detection block 450 slides on the grating scale 440. The grating scale 440 accurately records the position changes of the detection block 450 and transmits this position signal to the control unit. This enables the control unit to accurately monitor the precise position of the regulating door 3 in real time, thereby achieving more precise control over the width of the inlet / outlet 130. When the width of the inlet / outlet 130 needs to be fine-tuned to accommodate different workpieces or address special circumstances during production, this precise position feedback mechanism ensures that the regulating door 3 accurately moves to the target position, improving the accuracy of the equipment's width adjustment of the inlet / outlet 130. The grating scale 440-detection block 450 system works in conjunction with the detection light curtain 420, the control unit, the telescopic member 301, and other components. The detection light curtain 420 detects the workpiece width, and the control unit uses this information to control the telescopic member 301 to adjust the width of the inlet / outlet 130. The grating scale 440-detection block 450 system monitors and provides feedback on the actual position of the regulating door 3. This collaborative optimization of multiple components enables the equipment to adapt to the drying needs of different workpieces more accurately and efficiently, improving the working efficiency and drying quality of the entire spraying equipment.

[0058] As a further technical solution, it also includes: there are several C-shaped slides 310, which are arranged on the spraying equipment 1; there are several first pulleys 320, which are rotatably arranged on the adjusting door 3, and the first pulley 320 slides in the C-shaped slide 310; the outer guard 330 is arranged on the outside of the C-shaped slide 310, and the outer guard 330 is used to prevent the first pulley 320 from detaching from the C-shaped slide 310.

[0059] In this embodiment, the cooperation between the C-shaped slide 310 and the first pulley 320 provides a smooth movement for the sliding of the regulating door 3. The first pulley 320 rotates and slides in the C-shaped slide 310. Compared with direct sliding friction, rolling friction greatly reduces friction. This allows the regulating door 3 to slide more easily and quickly under the drive of the telescopic member 301, thereby improving the response speed of the width adjustment of the inlet and outlet 130. The outer shield 330 is arranged on the outside of the C-shaped slide 310, which can effectively prevent the first pulley 320 from detaching from the C-shaped slide 310. This avoids the situation where the regulating door 3 moves out of control due to the pulley detaching from the slide, thereby improving the safety of the equipment.

[0060] As a further technical solution, the guide rod 340 also includes two guides for sliding the second pulley 360.

[0061] In this embodiment, the guide rod 340 can guide the position of the adjustment door 3. Whether it is frequently adjusting the width of the inlet and outlet 130 to accommodate workpieces of different sizes, or in a long-term stable production process, the precise guidance can ensure that the adjustment door 3 accurately reaches the required position, thereby improving the operating accuracy of the equipment.

[0062] As a further technical solution, one inlet 120 or outlet 130 is controlled by two adjusting doors 3 , and the telescopic members 301 of the two adjusting doors 3 are controlled separately by a control member.

[0063] In this embodiment, various complex situations may be encountered during the production process, such as irregular shapes of workpieces or special entry and exit requirements due to the layout of the production line. The telescopic member 301 that controls the two adjustment doors 3 separately can flexibly adjust the opening of the two adjustment doors 3 according to the specific situation, so that the equipment can better adapt to these complex situations. This separate control method can improve the flexibility of adjusting the width of the inlet and outlet 130 without affecting the overall operating efficiency of the equipment. During the production process of quickly switching between workpieces of different sizes, the width of the inlet and outlet 130 can be quickly adjusted to reduce the waiting time of the workpiece, thereby improving the production efficiency of the entire production line.

[0064] As a further technical solution, the feeding member 2 includes: a guide groove 210 running through the processing space 110, a guide space 220 is provided in the guide groove 210, and an opening 230 communicating with the guide space 350 is provided below the guide groove 210; there are several first conveying members 240, which are slidably arranged in the guide space 220; there are several connecting members 250, one end of which is hinged to the first conveying member 240; there are several second conveying members 260, which are slidably arranged in the guide space 220 and are hinged to the other end of the first conveying member 240, and several first conveying members 240 and several second conveying members 260 are hinged in sequence with the connecting member 250; a fixed seat 270 is arranged on the first conveying member 240, and the fixed seat 270 passes through the opening 230 to leave the guide space 220; one end of the fixing hook 280 is arranged on the fixing seat 270, and the fixing hook 280 is used to fix the workpiece after the spraying is completed.

[0065] In this embodiment, the guide groove 210 runs through the processing space 110, and the guide space 220 inside it reasonably accommodates the first conveying member 240, the connecting member 250 and the second conveying member 260, and the fixing seat 270 leaves the guide space 220 through the opening 230. This design allows the feeding member 2 to maintain a relatively compact spatial layout while realizing complex functions. It reduces unnecessary occupation of the internal space of the spraying equipment 1, is conducive to the uniform distribution and effective utilization of heat in the spraying equipment 1, and also provides the possibility for the miniaturization design of the equipment. The setting of the fixing seat 270 and the fixing hook 280 provides a reliable fixing method for the workpiece after spraying. The fixing hook 280 can accurately hook a specific part of the workpiece to prevent the workpiece from shaking or falling off during transportation. This is crucial for protecting the spray layer on the surface of the workpiece, because any shaking or falling off may cause damage to the spray layer, affecting the appearance and quality of the workpiece.

[0066] As a further technical solution, the third pulley 291 and the fourth pulley 292 are rotatably disposed on the first conveying member 240 and the second conveying member 260 respectively, and the third pulley 291 and the fourth pulley 292 are both in contact with the side wall of the guide groove 210 .

[0067] In this embodiment, the third pulley 291 and the fourth pulley 292 are respectively disposed on the first conveying member 240 and the second conveying member 260, and abut against the sidewalls of the guide groove 210. This design converts the sliding friction between the first conveying member 240 and the second conveying member 260 and the sidewalls of the guide groove 210 into rolling friction. The friction force of rolling friction is much smaller than that of sliding friction, which makes the first conveying member 240 and the second conveying member 260 slide more smoothly within the guide groove 210.

[0068] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A spraying device with adjustable inlet and outlet width, characterized in that: include: A spraying device (1) having a processing space (110) therein and an inlet (120) and an outlet (130) in communication with the processing space (110); A feeding piece (2) enters from the inlet (120), passes through the processing space (110), and then exits from the outlet (130). The feeding piece (2) is used to fix and transport the sprayed workpiece into or out of the processing space (110); There are a plurality of regulating doors (3), which are slidably arranged on the spraying equipment (1), and the plurality of regulating doors (3) are used to control the opening and closing of the inlet (120) and the outlet (130); There are a plurality of telescopic members (301) provided on the spraying equipment (1), and one of the telescopic members (301) is used to drive one of the regulating doors (3) to slide.

2. The spraying equipment with adjustable inlet and outlet width according to claim 1, characterized in that: The spraying equipment (1) is one of a spray pre-treatment furnace, a drying and curing furnace or a powder spraying room.

3. The spraying equipment with adjustable inlet and outlet width according to claim 1, characterized in that: Also includes: A light curtain bracket (410) is arranged on one side of the spraying equipment (1); a detection light curtain (420) disposed on the light curtain bracket (410); the feeding piece (2) enters the processing space (110) after passing through the detection light curtain (420); the detection light curtain (420) is used to detect the width of the workpiece conveyed by the feeding piece (2); A control component is used to receive a signal transmitted by the detection light curtain (420) and control the opening and closing of the telescopic component (301) through the signal.

4. The spraying equipment with adjustable inlet and outlet width according to claim 3, characterized in that: Also includes: A plurality of grating rulers (440) are provided on the spraying device (1); A detection block (450) is slidably arranged on the grating ruler (440), one end of the detection block (450) is fixed on the adjustment door (3), and after the adjustment door (3) slides, the grating ruler (440) is used to record and transmit the position of the detection block (450) and transmit the signal to the control component.

5. The spraying equipment with adjustable inlet and outlet width according to claim 1, characterized in that: Also includes: There are a plurality of C-shaped slideways (310) provided on the spraying device (1); There are a plurality of first pulleys (320), which are rotatably arranged on the regulating door (3), and the first pulleys (320) slide in the C-shaped slideway (310); An outer shield (330) is arranged outside the C-shaped slideway (310), and the outer shield (330) is used to prevent the first pulley (320) from escaping from the C-shaped slideway (310).

6. The spraying equipment with adjustable inlet and outlet width according to claim 1, characterized in that: Also includes: There are two guide rods (340) provided on the spraying device (1), and a guide space (350) is provided between the two guide rods (340); The second pulley (360) is rotatably arranged at the bottom of the regulating door (3), the side wall of the second pulley (360) is in contact with the guide rod (340), and the guide space (350) is used to guide the sliding of the second pulley (360).

7. The spraying equipment with adjustable inlet and outlet width according to claim 3, characterized in that: One of the inlet (120) or the outlet (130) is controlled by two regulating doors (3), and the telescopic members (301) of the two regulating doors (3) are separately controlled by the control member.

8. The spraying equipment with adjustable inlet and outlet width according to claim 6, characterized in that: The feeding member (2) comprises: A guide groove (210) passes through the processing space (110), wherein a guide space (220) is provided in the guide groove (210), and an opening (230) communicating with the guide space (350) is provided below the guide groove (210); A plurality of first conveying members (240) are slidably arranged in the guide space (220); A plurality of connecting members (250), one end of which is hinged to the first conveying member (240); The second conveying member (260) is provided in plurality and is slidably arranged in the guide space (220) and is hinged to the other end of the first conveying member (240), wherein the plurality of the first conveying members (240) and the plurality of the second conveying members (260) are hinged in sequence with the connecting member (250) interposed therebetween; A fixed seat (270) is provided on the first conveying member (240), and the fixed seat (270) passes through the opening (230) and leaves the guide space (220); A fixing hook (280) is provided at one end on the fixing seat (270), and the fixing hook (280) is used to fix the workpiece after spraying.

9. The spraying equipment with adjustable inlet and outlet width according to claim 8, characterized in that: Also includes: The third pulley (291) and the fourth pulley (292) are rotatably arranged on the first conveying member (240) and the second conveying member (260), respectively. The third pulley (291) and the fourth pulley (292) are both in contact with the side wall of the guide groove (210).