Automatic spraying equipment for small-diameter cutters

Abstract

The invention relates to the field of automatic spraying of small-diameter cutters, in particular to automatic spraying equipment for small-diameter cutters, which comprises a conveyor belt, a plurality of groups of fixing assemblies for fixing cutters are arranged on the conveyor belt, and an extrusion mechanism is arranged on one side of each fixing assembly; a spraying assembly is arranged below the conveying belt. Each set of fixing assembly comprises two symmetrically-arranged sleeves, the two sleeves are arranged at the edge position of the conveying belt, and one end of each sleeve is connected to the surface of the conveying belt. According to the design of the automatic spraying equipment for the small-diameter cutters, the small-diameter cutters are sequentially conveyed to the spraying area, the drying area and the discharging area without stopping, the feeding link and the discharging link are continuously conducted, and compared with an existing mode that feeding is conducted after shutdown discharging is conducted, the automatic spraying equipment for the small-diameter cutters has the advantages that the efficiency is higher, the conveying belt runs without stopping, and the labor intensity of workers is lowered. And continuous conveying of the small-diameter cutters is guaranteed, so that the spraying head sprays the coating without stop, and the problem that the coating is dried and caked to block the spraying head when spraying is stopped is avoided.

Description

Technical Field

[0001] The invention relates to the field of automatic spraying of small-diameter tools, in particular to automatic spraying equipment for small-diameter tools. Background Art

[0002] Small-diameter tools usually refer to milling cutters or drill bits with smaller diameters, with diameters less than or equal to 6.35 mm. Such tools are widely used in the field of precision machining. For example, in wood machining, small-diameter tools can be used for cutting, drilling, carving, grooving or trimming on wood substrates, and the machining accuracy is improved, which can meet the high-precision requirements of wood machining.

[0003] Small-diameter tools can perform high-precision machining because they have a smaller diameter and are coated on the surface. The coating allows the tool to maintain its cutting ability for a longer period of time. At the same time, the coating helps prevent the workpiece material from adhering to the tool surface, keeping the cutting edge clean, ensuring better finish and more accurate cutting. After the small-diameter tool is formed by mechanical processing, it is sprayed. Currently, there are also spraying equipment or devices, such as a milling cutter coating spraying mechanism provided by the publication number CN118253440A. The milling cutter coating spraying mechanism mainly solves the two problems of spraying efficiency and spraying uniformity. Several clamping mechanisms arranged in a circular array can clamp multiple milling cutters, and a driving mechanism is arranged to drive each clamping mechanism to rotate. From a structural analysis, the milling cutter coating spraying mechanism can only spray multiple milling cutters at one time in terms of spraying efficiency. After the spraying is completed, the milling cutter is removed and a new milling cutter is installed. Obviously, the two links from stopping for loading to stopping for unloading will take up a lot of time, which has an adverse effect on the entire spraying operation.

[0004] Therefore, in view of the above problems, an automatic spraying equipment for small-diameter tools is proposed. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is: the small-diameter tool automatic spraying equipment described in the present invention comprises a conveyor belt, on which are arranged a plurality of fixed assemblies for fixing the tools, and an extrusion mechanism is arranged on one side of each fixed assembly; a spraying assembly is arranged under the conveyor belt; Each group of the fixing components includes two symmetrically arranged sleeves, the two sleeves are arranged at the edge of the conveyor belt, one end of the sleeves is connected to the surface of the conveyor belt, the two sleeves in the same group have rectangular openings on the opposite side walls, and an extrusion mechanism is arranged between the two opposite rectangular openings; Each of the squeezing mechanisms comprises a Y-shaped push rod, a first end of the push rod being connected to the conveyor belt via a torsion spring, a second end of the push rod extending toward the rectangular opening and squeezing the cutter in the sleeve, and third ends of the push rod being arranged close to each other; The spraying assembly comprises a side plate, on which a plurality of spray heads are arranged, and the coating discharged by the spray heads is sprayed on the tool.

[0007] Preferably, each of the sleeves is provided with a threaded barrel, one end of the threaded barrel is connected to the surface of the conveyor belt, and one end of the sleeve is threadedly connected in the threaded barrel.

[0008] Preferably, a reinforcing rod is fixedly connected between the two relatively threaded cylinders, and the first end of the push rod is rotationally connected to the reinforcing rod through a torsion spring.

[0009] Preferably, a drying component is provided below the conveyor belt, the drying component is arranged on one side of the spraying component, and the drying component includes a hollow plate, a plurality of spray holes are arranged on the hollow plate, and the gas discharged from the spray holes is used to dry the coating on the surface of the tool.

[0010] Preferably, a material unloading assembly is also provided under the conveyor belt, and the material unloading assembly is used to unload the tool after the coating is dried, and the material unloading assembly includes two symmetrically arranged No. 1 extrusion rods, and the two No. 1 extrusion rods are respectively arranged on the outside of the third end of the push rod, and the No. 1 extrusion rod can squeeze the third end of the push rod to separate the second end of the push rod from the rectangular opening.

[0011] Preferably, a loading auxiliary component is provided above the conveyor belt, and the loading auxiliary component includes two symmetrically arranged No. 2 extrusion rods, and the two No. 2 extrusion rods are respectively arranged on the outside of the third end of the push rod, and the No. 2 extrusion rods can squeeze the third end of the push rod so that the second end of the push rod is separated from the rectangular opening.

[0012] Preferably, an extrusion plate is provided below the conveyor belt, one end of the extrusion plate extends to one end of the first extrusion rod, and the other end of the extrusion plate extends toward the paint spraying assembly and extends to one end of the conveyor belt in an arc shape; The extrusion plate is located between the third ends of two adjacent push rods, and the extrusion plate can squeeze the third end of the push rod to squeeze the second end of the push rod onto the tool surface in the sleeve.

[0013] Preferably, a spring is provided at the second end of each push rod, and an arc-shaped extrusion block is fixed to the end of the spring.

[0014] Preferably, grooves are provided on both sides of the extrusion plate, a plurality of rollers are rotatably connected in the grooves, and the rollers are attached to the third end surface of the push rod and roll.

[0015] Preferably, a plurality of guard plates are provided below the conveyor belt, the guard plates are distributed on both sides of the sleeve, and the lower surfaces of the guard plates are fixedly connected to the upper surfaces of the side plates and the hollow plates.

[0016] The present invention is beneficial in that: 1. In the present invention, the design of the automatic spraying equipment for small-diameter tools is that the conveyor belt rotates slowly and continuously, and the small-diameter tools have a loading area, and are sequentially conveyed to the spraying area, the drying area and the unloading area without stopping in the middle. The loading and unloading links are continuously carried out. Compared with the existing shutdown for unloading and reloading, the automatic spraying equipment for small-diameter tools in this embodiment has higher efficiency, and the problem of uniformity of spraying on the surface of small-diameter tools can be solved by flexibly adjusting the rotation speed of the conveyor belt and the spraying direction of the nozzle, and the conveyor belt runs continuously, so as to ensure the continuous transportation of small-diameter tools, so that the nozzle sprays the coating without stopping, and avoids the occurrence of the problem of the coating drying and agglomerating and clogging the nozzle when the spraying is stopped.

[0017] 2. In the present invention, the design of the blanking component enables the small-diameter tool to automatically detach from the blanking tool, saving expenses and reducing costs. At the same time, it reduces manual participation, reduces the chance of contact with the equipment, improves safety, and the blanking component blanking is more stable than manual blanking. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the automatic spraying equipment for small-diameter tools of the present invention; Figure 2 A first-view stereoscopic diagram of the automatic spraying equipment for small-diameter tools of the present invention; Figure 3 A second perspective stereogram of the automatic spraying equipment for small-diameter tools of the present invention; Figure 4 It is a three-dimensional diagram of the cooperation between the fixing assembly and the extrusion mechanism in the present invention; Figure 5 It is a schematic diagram of the cooperation between the fixing assembly and the extrusion mechanism in the present invention; Figure 6 It is a schematic diagram of the structure of the ejector rod in the present invention; Figure 7 It is a cross-sectional view of the matching of the sleeve and the threaded barrel in the present invention; Figure 8 It is a three-dimensional diagram of the threaded barrel in the present invention; Fig. 9 is a three-dimensional diagram of the sleeve in the present invention; Fig.10 It is a structural schematic diagram of the spraying assembly in the present invention; Fig.11 A top view of the conveyor belt of the present invention; Fig.12 A bottom view of the conveyor belt of the present invention; Fig.13This is a first-view stereoscopic diagram of the cooperation between the conveyor belt and the extrusion plate in the present invention; Fig.14 A second perspective perspective view of the cooperation between the conveyor belt and the extrusion plate in the present invention; Fig.15 It is a three-dimensional diagram of the extruded plate in the present invention.

[0019] In the figure: 101, small diameter tool; 1, conveyor belt; 2, sleeve; 3, rectangular mouth; 4, push rod; 5, first end; 6, second end; 7, third end; 8, side plate; 9, nozzle; 10, threaded barrel; 11, reinforcing rod; 12, hollow plate; 13, No. 1 extrusion rod; 14, No. 2 extrusion rod; 15, extrusion plate; 16, spring; 17, extrusion block; 18, roller body; 19, guard plate; 20, push block; 21, material guide trough. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] Reference Figure 1 - Fig.10 , an automatic spraying device for small-diameter tools, comprising a conveyor belt 1, on which are disposed a plurality of fixing components for fixing tools, and each fixing component is provided with an extrusion mechanism on one side; a spraying component is disposed under the conveyor belt 1; Each group of the fixing components includes two symmetrically arranged sleeves 2, the two sleeves 2 are arranged at the edge of the conveyor belt 1, one end of the sleeve 2 is connected to the surface of the conveyor belt 1, and the two sleeves 2 in the same group have rectangular openings 3 on the opposite side walls, and an extrusion mechanism is arranged between the two opposite rectangular openings 3; Each of the squeezing mechanisms comprises a Y-shaped push rod 4, a first end 5 of the push rod 4 is connected to the conveyor belt 1 through a torsion spring, a second end 6 of the push rod 4 extends toward the rectangular opening 3 and squeezes the cutter in the sleeve 2, and a third end 7 of the push rod 4 is arranged close to each other; The spraying assembly includes a side plate 8, on which a plurality of spray heads 9 are arranged, and the coating discharged by the spray heads 9 is sprayed on the tool; In this embodiment, the chain conveyor belt 1 is driven by a servo motor to ensure the stable operation of the conveyor belt 1 and to flexibly adjust the rotation speed of the conveyor belt 1; The specific working steps of this small-diameter tool automatic spraying equipment are as follows: Step 1: Loading, insert the small-diameter tools 101 into the sleeve 2 one by one, as shown in FIG. Figure 1As shown, the upper right corner area of ​​the conveyor belt 1 is the loading area, the small-diameter tool 101 is pressed into the sleeve 2, the handle of the small-diameter tool 101 passes over the second end 6 of the push rod 4 in the rectangular opening 3, and is finally inserted into the bottom of the sleeve 2. At the same time, under the torsion force of the torsion spring connected to the push rod 4, the torsion spring drives the second end 6 of the push rod 4 to be squeezed on the handle of the small-diameter tool 101, and the loading link is completed at this time; Step 2: conveying. The conveyor belt 1 keeps running and rotating slowly, and the small-diameter tool 101 is rotated and brought into the spraying assembly position; Step 3: spraying. The nozzle 9 discharges the coating and sprays it on the surface of the small-diameter tool 101. The spraying direction of some nozzles 9 is tilted so that the coating can be completely sprayed on the surface of the small-diameter tool 101 to ensure the uniformity of the spraying. After the spraying is completed, the coating is dried. Step 4: Drying, such as Figure 1 The drying area is the middle area below the conveyor belt 1, the left side of the middle area is the spraying area, and the right side of the middle area is the unloading area; the drying time can be determined by the length of the conveyor belt 1. A longer conveyor belt 1 is designed to ensure that the small-diameter tool 101 has a longer drying time after the spraying is completed; Step 5: After the material is cut and dried, the small-diameter cutters 101 are removed one by one, and the small-diameter cutters 101 can be pulled down to separate from the casing 2; In the automatic spraying equipment for small-diameter tools, the conveyor belt 1 rotates slowly and continuously, and conveys the small-diameter tools 101 from the loading area to the spraying area, the drying area and the unloading area in sequence without stopping in the middle, and the loading and unloading links are continuously carried out. Compared with the existing shutdown for unloading and reloading, the automatic spraying equipment for small-diameter tools in this embodiment has higher efficiency, and the problem of surface spraying uniformity of the small-diameter tools 101 can be solved by flexibly adjusting the rotation speed of the conveyor belt 1 and the spraying direction of the nozzle 9, and the conveyor belt 1 runs continuously, so as to ensure the continuous transportation of the small-diameter tools 101, so that the nozzle 9 sprays the coating without stopping, and avoids the occurrence of the problem of the coating drying and agglomerating and clogging the nozzle 9 when the spraying is stopped.

[0022] Reference Figure 1 - Fig. 9 Each of the sleeves 2 is provided with a threaded barrel 10, one end of the threaded barrel 10 is connected to the surface of the conveyor belt 1, and one end of the sleeve 2 is threadedly connected in the threaded barrel 10; The diameter of the small-diameter tool 101 has various specifications, and its length also has various specifications. Some longer small-diameter tools 101 have a large dead weight. After being inserted into the sleeve 2, the firmness is poor. In particular, when the small-diameter tool 101 is transported to the spraying area and the drying area, the small-diameter tool 101 may be accidentally detached. For this reason, a sleeve 2 that can adjust the length of the extension outside the threaded barrel 10 is provided to ensure that the blades of some shorter small-diameter tools 101 can be completely extended outside the sleeve 2, and a top block 20 is provided at the bottom of the threaded barrel 10. The top block 20 can half-wrap and squeeze the small-diameter tool 101, thereby further improving the stability of the small-diameter tool 101; for some longer small-diameter tools 101, the sleeve 2 can be rotated so that the sleeve 2 extends outside the threaded barrel 10, such as Figure 7 As shown, the distance between the upper end of the sleeve 2 and the top block 20 is adjusted to increase so that the sleeve 2 can wrap more parts of the small-diameter tool 101, increase the contact area between the small-diameter tool 101 and the sleeve 2, and thus increase the stability between the small-diameter tool 101 and the sleeve 2.

[0023] Reference Figure 1 - Figure 5 A reinforcing rod 11 is fixedly connected between the two threaded cylinders 10, and the first end 5 of the push rod 4 is rotatably connected to the reinforcing rod 11 through a torsion spring; A reinforcing rod 11 is arranged between the two threaded cylinders 10 to stabilize the two adjacent threaded cylinders 10 to prevent the small-diameter tool 101 from swinging during transmission, and also to provide stable support for the push rod 4, that is, the first end 5 of the push rod 4 is connected to the reinforcing rod 11 through a torsion spring rotation, rather than the surface of the chain conveyor belt 1.

[0024] Reference Figure 1 - Figure 3 A drying assembly is provided below the conveyor belt 1, the drying assembly is provided on one side of the spray assembly, and the drying assembly includes a hollow plate 12, a plurality of spray holes are provided on the hollow plate 12, and the gas discharged from the spray holes is used to dry the coating on the surface of the tool; By extending the length of the conveyor belt 1 and increasing the drying time of the small-diameter tool 101 after spraying, the surface coating of the small-diameter tool 101 can be dried. However, for some factories with limited space, it is not suitable to extend the length of the conveyor belt 1. For this reason, a drying component is provided in the drying area. The drying component can accelerate the drying of the coating. For example, a dry warm airflow is injected into the hollow plate 12. The warm airflow is discharged from the spray hole and impacts the surface of the small-diameter tool 101 sprayed with the coating, thereby accelerating the drying of the coating.

[0025] Reference Figure 1 - Fig.15A material unloading assembly is also provided under the conveyor belt 1, and the material unloading assembly is used to unload the tool after the coating is dried, and the material unloading assembly includes two symmetrically arranged No. 1 extrusion rods 13, and the two No. 1 extrusion rods 13 are respectively arranged outside the third end 7 of the push rod 4, and the No. 1 extrusion rod 13 can squeeze the third end 7 of the push rod 4 to separate the second end 6 of the push rod 4 from the rectangular opening 3; The blanking assembly is used for automatically disengaging and blanking small-diameter tools 101, which can replace manual blanking, save expenses, and reduce costs. Fig.12 As shown, the left ends of the two No. 1 extrusion rods 13 are tilted outward and then approach each other. When the ejector rod 4 moves between the two No. 1 extrusion rods 13, the two No. 1 extrusion rods 13 will be squeezed inward on the third end 7 of the ejector rod 4, so that the third ends 7 of the two adjacent ejector rods 4 are close to each other, and the ejector rod 4 rotates around the rotation connection, and the second end 6 of the ejector rod 4 gradually separates from the rectangular opening 3 and no longer squeezes the small-diameter tool 101 in the sleeve 2. At this time, the small-diameter tool 101 falls into the guide trough 21 set below the conveyor belt 1 under its own gravity, realizing automatic unloading of the small-diameter tool 101; The blanking component enables the small-diameter tool 101 to automatically disengage from the blanking, saving expenses and reducing costs. At the same time, it reduces manual participation, reduces the chance of contact with the equipment, improves safety, and the blanking component blanking is more stable than manual blanking.

[0026] Reference Figure 1 - Fig.11 A feeding auxiliary component is provided above the conveyor belt 1, and the feeding auxiliary component includes two symmetrically arranged No. 2 extrusion rods 14, and the two No. 2 extrusion rods 14 are respectively arranged outside the third end 7 of the push rod 4, and the No. 2 extrusion rod 14 can squeeze the third end 7 of the push rod 4, so that the second end 6 of the push rod 4 is separated from the rectangular opening 3; In this embodiment, the loading of the small-diameter tool 101 is performed manually, such as Fig.11 As shown, a No. 2 extrusion rod 14 is arranged above the conveyor belt 1, and when the push rod 4 moves between the two No. 2 extrusion rods 14, the two No. 2 extrusion rods 14 will be squeezed inward on the third end 7 of the push rod 4, so that the third ends 7 of the two adjacent push rods 4 are close to each other, and the push rod 4 rotates around its rotation connection, and the second end 6 of the push rod 4 gradually falls off the rectangular opening 3. At this time, when the small-diameter tool 101 is inserted into the casing 2, the small-diameter tool 101 can automatically fall to the bottom of the casing 2 under its own gravity. When the push rod 4 moves and breaks away from the two No. 2 extrusion rods 14, the push rod 4 rotates under the torsion of the torsion spring connected to it, and the third end 7 of the push rod 4 extends to the rectangular opening 3 again, and presses on the small-diameter tool 101, and the small-diameter tool 101 is squeezed and stabilized in the casing 2, and the feeding auxiliary component is used to assist manual feeding, reduce the link of manually pressing down the small-diameter tool 101, reduce labor, and improve safety.

[0027] Reference Figure 1 - Fig.15 A squeezing plate 15 is provided below the conveyor belt 1, one end of the squeezing plate 15 extends to one end of the first squeezing rod 13, and the other end of the squeezing plate 15 extends toward the paint spraying assembly and extends to one end of the conveyor belt 1 in an arc shape; The extrusion plate 15 is located between the third ends 7 of two adjacent push rods 4, and the extrusion plate 15 can squeeze the third ends 7 of the push rods 4 to squeeze the second ends 6 of the push rods 4 onto the tool surface in the sleeve 2; The extrusion plate 15 is used to expand and squeeze the ejector rod 4 outward, and its purpose is to increase the extrusion force of the ejector rod 4 on the small-diameter tool 101 in the casing 2, thereby improving the stability of the small-diameter tool 101; Fig.14 and Fig.15 As shown, the left end of the extrusion plate 15 is in an arc shape, and the end position of the left end of the extrusion plate 15 is in a flat shape transition, so that the two adjacent push rods 4 can move smoothly to the two sides of the extrusion plate 15. When the push rod 4 rotates with the conveyor belt 1, the two sides of the extrusion plate 15 will be squeezed on the third end 7 of the push rod 4, so that the push rod 4 is further deflected toward the sleeve 2, thereby increasing the extrusion force of the push rod 4 on the small-diameter tool 101, thereby improving the stability of the small-diameter tool 101 during the rotation of the conveyor belt 1.

[0028] Reference Figure 1 - Figure 6 The second end 6 of each of the push rods 4 is provided with a spring 16, and the end of the spring 16 is fixedly connected with an arc-shaped extrusion block 17; A spring 16 is provided at the second end 6 of the push rod 4 to connect to the extrusion block 17, so as to ensure that the push rod 4 can squeeze the small-diameter tools 101 of different diameters in the casing 2. At the same time, when the extrusion plate 15 squeezes the push rod 4, the push rod 4 can also deflect smoothly to prevent the extrusion plate 15 from being hard pressed on the push rod 4 to cause a jamming accident.

[0029] Reference Figure 1 - Fig.15 , grooves are provided on both sides of the extrusion plate 15, and a plurality of rollers 18 are rotatably connected in the grooves, and the rollers 18 are attached to the surface of the third end 7 of the top rod 4 and roll; Rollers 18 are provided on both sides of the extrusion plate 15 to convert the sliding friction between the push rod 4 and the extrusion plate 15 into rolling friction between the push rod 4 and the rollers 18, thereby reducing friction, reducing the wear of the third end 7 of the push rod 4, and extending the service life of the push rod 4.

[0030] Reference Figure 1 - Fig.15 , a plurality of guard plates 19 are provided below the conveyor belt 1, the guard plates 19 are distributed on both sides of the sleeve 2, and the lower surface of the guard plates 19 is fixed to the upper surface of the side plate 8 and the hollow plate 12; The protective plate 19 is provided to shield the coating, reduce the coating's contamination of the sleeve 2 and the threaded barrel 10 , and reduce the possibility of the coating solidifying the sleeve 2 and the threaded barrel 10 .

[0031] Working principle: The specific working steps of this small-diameter tool automatic spraying equipment are as follows: Step 1: Loading, insert the small-diameter tools 101 into the sleeve 2 one by one, as shown in FIG. Figure 1 As shown, the upper right corner area of ​​the conveyor belt 1 is the loading area, the small-diameter tool 101 is pressed into the sleeve 2, the handle of the small-diameter tool 101 passes over the second end 6 of the push rod 4 in the rectangular opening 3, and is finally inserted into the bottom of the sleeve 2. At the same time, under the torsion force of the torsion spring connected to the push rod 4, the torsion spring drives the second end 6 of the push rod 4 to be squeezed on the handle of the small-diameter tool 101, and the loading link is completed at this time; Step 2: conveying. The conveyor belt 1 keeps running and rotating slowly, and the small-diameter tool 101 is rotated and brought into the spraying assembly position; Step 3: spraying. The nozzle 9 discharges the coating and sprays it on the surface of the small-diameter tool 101. The spraying direction of some nozzles 9 is tilted so that the coating can be completely sprayed on the surface of the small-diameter tool 101 to ensure the uniformity of the spraying. After the spraying is completed, the coating is dried. Step 4: Drying, such as Figure 1 The drying area is the middle area below the conveyor belt 1, the left side of the middle area is the spraying area, and the right side of the middle area is the unloading area; the drying time can be determined by the length of the conveyor belt 1. A longer conveyor belt 1 is designed to ensure that the small-diameter tool 101 has a longer drying time after the spraying is completed; Step 5, unloading. After drying, the third end 7 of the push rod 4 is squeezed by the No. 1 squeezing rod 13, the push rod 4 deflects, the second end 6 of the push rod 4 is separated from the small-diameter tool 101, and the small-diameter tool 101 is separated from the unloading under its own gravity.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic spraying equipment for small-diameter tools, characterized by: It comprises a conveyor belt (1), on which a plurality of fixed components for fixing knives are arranged, and one side of each fixed component is provided with an extrusion mechanism; and a spraying component is arranged below the conveyor belt (1); Each group of the fixing components comprises two symmetrically arranged sleeves (2), the two sleeves (2) being arranged at the edge of the conveyor belt (1), one end of the sleeves (2) being connected to the surface of the conveyor belt (1), the two sleeves (2) in the same group having rectangular openings (3) on opposite side walls, and a squeezing mechanism being arranged between the two opposite rectangular openings (3); Each of the squeezing mechanisms comprises a Y-shaped push rod (4), a first end (5) of the push rod (4) being connected to the conveyor belt (1) via a torsion spring, a second end (6) of the push rod (4) extending in the direction of the rectangular opening (3) and squeezing the cutter in the sleeve (2), and third ends (7) of the push rod (4) being arranged close to each other; The spraying assembly comprises a side plate (8), a plurality of spray heads (9) are arranged on the side plate (8), and the coating discharged by the spray heads (9) is sprayed on the tool; A material unloading component is also provided below the conveyor belt (1), and is used to unload the tool after the coating is dried. The material unloading component comprises two symmetrically arranged No. 1 extrusion rods (13), and the two No. 1 extrusion rods (13) are respectively arranged outside the third end (7) of the push rod (4), and the No. 1 extrusion rods (13) are capable of squeezing the third end (7) of the push rod (4) to separate the second end (6) of the push rod (4) from the rectangular opening (3).

2. The small-diameter tool automatic spraying equipment according to claim 1 is characterized by: Each of the sleeves (2) is provided with a threaded barrel (10), one end of the threaded barrel (10) is connected to the surface of the conveyor belt (1), and one end of the sleeve (2) is threadedly connected inside the threaded barrel (10).

3. The small-diameter tool automatic spraying equipment according to claim 2 is characterized by: A reinforcing rod (11) is fixedly connected between the two threaded cylinders (10), and a first end (5) of the push rod (4) is rotatably connected to the reinforcing rod (11) via a torsion spring.

4. The small-diameter tool automatic spraying equipment according to claim 2 is characterized by: A drying component is provided below the conveyor belt (1), the drying component is arranged on one side of the spraying component, and the drying component comprises a hollow plate (12), a plurality of spray holes are arranged on the hollow plate (12), and the gas discharged from the spray holes is used to dry the coating on the surface of the tool.

5. The small-diameter tool automatic spraying equipment according to claim 4 is characterized by: A feeding auxiliary component is provided above the conveyor belt (1), and the feeding auxiliary component comprises two symmetrically arranged No. 2 extrusion rods (14), the two No. 2 extrusion rods (14) are respectively arranged outside the third end (7) of the push rod (4), and the No. 2 extrusion rods (14) are capable of squeezing the third end (7) of the push rod (4) so ​​that the second end (6) of the push rod (4) is separated from the rectangular opening (3).

6. The small-diameter tool automatic spraying equipment according to claim 5 is characterized by: An extrusion plate (15) is provided below the conveyor belt (1), one end of the extrusion plate (15) extends to one end of the first extrusion rod (13), and the other end of the extrusion plate (15) extends in the direction of the paint spraying assembly and extends in an arc shape to one end of the conveyor belt (1); The extrusion plate (15) is located between the third ends (7) of two adjacent push rods (4), and the extrusion plate (15) is capable of extruding the third ends (7) of the push rods (4) to squeeze the second ends (6) of the push rods (4) onto the surface of the tool in the sleeve (2).

7. The small-diameter tool automatic spraying equipment according to claim 6 is characterized by: The second end (6) of each push rod (4) is provided with a spring (16), and the end of the spring (16) is fixedly connected with an arc-shaped extrusion block (17).

8. The small-diameter tool automatic spraying equipment according to claim 6 is characterized by: Grooves are provided on both sides of the extrusion plate (15), and a plurality of rollers (18) are rotatably connected in the grooves, and the rollers (18) are attached to the surface of the third end (7) of the push rod (4) and roll.

9. The automatic spraying equipment for small-diameter tools according to claim 6, characterized in that: A plurality of guard plates (19) are provided below the conveyor belt (1), the guard plates (19) are distributed on both sides of the sleeve (2), and the lower surfaces of the guard plates (19) are fixedly connected to the upper surfaces of the side plates (8) and the hollow plates (12).

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