Inner hole spraying machine

Abstract

The utility model belongs to the field of spraying equipment, and particularly relates to an inner hole spraying machine which comprises a lifting mechanism, a rotating tool connected with the executing end of the lifting mechanism and a spraying mechanism fixedly arranged over the rotating tool, the spraying mechanism is connected with an external coating supply system, and the rotating tool is used for inserting a thread sleeve and driving the thread sleeve to rotate. The spraying mechanism is fixed and located above the rotating tool, the lifting mechanism drives the rotating tool to move up and down, the thread sleeve is made to be close to or away from the spraying mechanism, then spraying operation is conducted on an inner hole of the thread sleeve, and in the whole process, the spraying mechanism is in a relatively static state, so that the situation that a nozzle shakes and is damaged due to driving of the spraying mechanism is avoided; and the spraying quality is also ensured. In addition, as the spraying mechanism does not move, the guide pipe connected with the paint supply system does not need to move, the guide pipe does not need to be bent and rubbed repeatedly and is not prone to damage, and the laying difficulty is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of spraying equipment, and particularly relates to an inner hole spraying machine. Background Art

[0002] During the use of the screw sleeve, its inner hole may be affected by factors such as corrosion and wear, thereby reducing its performance and service life. Therefore, spraying the inner hole of the screw sleeve can form a protective layer to isolate the external environment from eroding the screw sleeve and improve the corrosion resistance and wear resistance of the screw sleeve.

[0003] In the existing inner hole spraying machine, the spraying mechanism is driven by a transmission system to move in the inner hole of the screw sleeve to achieve full spraying of the inner hole of the screw sleeve. For a longer screw sleeve, the nozzle length of the spraying mechanism is too long, and the vibration generated by the transmission system driving the spraying mechanism will cause obvious shaking of the nozzle, which is easy to touch the screw sleeve, not only affecting the spraying quality, but also possibly causing damage to the nozzle. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an inner hole spraying machine, which avoids the damage caused by the shaking of the nozzle caused by driving the spraying mechanism and also ensures the spraying quality.

[0005] The utility model provides an inner hole spraying machine, which includes a lifting mechanism, a rotating tooling connected to the execution end of the lifting mechanism, and a spraying mechanism fixedly arranged directly above the rotating tooling. The spraying mechanism is connected to an external paint supply system, and the rotating tooling is used for inserting the screw sleeve and driving the screw sleeve to rotate.

[0006] Optionally, the lifting mechanism includes a motor 1, a driving gear disk connected to the output end of the motor 1, a driven gear disk arranged below the driving gear disk, a transmission chain drivingly connected between the driving gear disk and the driven gear disk, and a slide rail pair arranged along the outside of the transmission chain. The rotating tooling or the slider of the slide rail pair is fixedly connected to the transmission chain, and the rotating tooling is fixedly connected to the slider of the slide rail pair.

[0007] Optionally, the rotating tooling includes a bearing seat, a motor 2 arranged on the back of the bearing seat, a bearing installed on the bearing seat, and a positioning sleeve connected to the inner ring of the bearing. The motor 2 is drivingly connected to the positioning sleeve, and the bearing seat is connected to the lifting mechanism.

[0008] Optionally, the positioning sleeve includes an outer sleeve, an inner sleeve detachably connected to the outer sleeve, and a ring gear arranged on the outer periphery of the outer sleeve. The outer sleeve is in interference fit with the inner ring of the bearing, and the ring gear is connected to the output end of the motor 2 through a transmission belt.

[0009] Optionally, a plurality of grooves are circumferentially formed at the upper end of the outer sleeve, and a plurality of protrusions are arranged along the outer periphery at the upper end of the inner sleeve. The protrusions are embedded in the grooves to form a clamping structure.

[0010] Optionally, a ring cover is detachably arranged at the upper end of the bearing seat. An annular groove is formed in the outer periphery of the outer sleeve near the end. The inner ring of the ring cover is embedded in the annular groove, and the ring cover is of a split structure.

[0011] Optionally, a protective cover is detachably arranged at the lower end of the bearing seat, and the protective cover covers the bottom ends of the second motor and the positioning sleeve.

[0012] Optionally, the spraying mechanism includes a fixing plate, a spray gun and a nozzle. A fastener is arranged on the fixing plate for fixing the nozzle.

[0013] Optionally, the inner hole spraying machine further includes a cabinet body. An exhaust fan is arranged at the top of the cabinet body, and the lifting mechanism, the rotating tooling and the spraying mechanism are installed in the cabinet body.

[0014] Optionally, the cabinet body includes two parallel installation positions and a ventilation duct located between the two installation positions. Each installation position is used for arranging the lifting mechanism, the rotating tooling and the spraying mechanism. Filter plates are arranged on both sides of the ventilation duct, and the exhaust fan is arranged at the top of the ventilation duct.

[0015] The beneficial effects of the present utility model are as follows: The spraying mechanism is fixed and located above the rotating tooling. The lifting mechanism drives the rotating tooling to move up and down, so that the screw sleeve approaches or moves away from the spraying mechanism, and then spraying operation is carried out on the inner hole of the screw sleeve. During the whole process, the spraying mechanism is in a relatively static state. Therefore, the nozzle shaking caused by driving the spraying mechanism is avoided and damage is prevented, and the spraying quality is guaranteed. In addition, since the spraying mechanism does not move, the conduit connecting the paint supply system does not need to move, the conduit does not need to be bent and rubbed repeatedly, is less likely to be damaged, and the laying difficulty is reduced. Description of the Drawings

[0016] Figure 1 is a schematic structural view of the inner hole spraying machine of the present utility model;

[0017] Figure 2 is a top view of the inner hole spraying machine of the present utility model;

[0018] Figure 3 is Figure 2 the A-A cross-sectional view in

[0019] Figure 4 is a schematic structural view of the rotating tooling of the present utility model;

[0020] Figure 5 is a cross-sectional view of the rotating tooling of the present utility model.

[0021] In the figure: 10, lifting mechanism; 101, driving sprocket; 102, driven sprocket; 103, transmission chain; 104, slide rail pair; 20, rotating tooling; 201, bearing seat; 202, motor two; 203, bearing; 204, positioning sleeve; 2041, outer sleeve; 2042, inner sleeve; 2043, ring gear; 2044, convex block; 205, transmission belt; 206, ring cover; 207, protective cover; 30, spraying mechanism; 301, fixing plate; 302, spray gun; 303, nozzle; 40, exhaust fan; 50, cabinet; 501, installation position; 502, ventilation duct; 503, filter screen plate. Detailed implementation manner

[0022] As Figures 1-5 shown, an inner hole spraying machine provided by the present utility model includes a lifting mechanism 10, a rotating tooling 20 connected to the execution end of the lifting mechanism 10, and a spraying mechanism 30 fixedly arranged directly above the rotating tooling 20. The spraying mechanism 30 is connected to an external paint supply system. The rotating tooling 20 is used for inserting a bushing and driving the bushing to rotate.

[0023] Compared with the prior art, in the inner hole spraying machine provided by the present utility model, the spraying mechanism 30 is fixed and located above the rotating tooling 20. The lifting mechanism 10 drives the rotating tooling 20 to move up and down, so that the bushing approaches or moves away from the spraying mechanism 30, and then the inner hole of the bushing is sprayed. During the whole process, the spraying mechanism 30 is in a relatively static state. Therefore, the nozzle 303 is prevented from shaking and being damaged caused by driving the spraying mechanism 30, and the spraying quality is also ensured. In addition, because the spraying mechanism 30 does not move, the conduit connecting the paint supply system does not need to move, the conduit does not need to be bent and rubbed repeatedly, is less likely to be damaged, and the laying difficulty is reduced.

[0024] In one embodiment, please refer to Figure 3 , the lifting mechanism 10 includes a motor one, a driving sprocket 101 connected to the output end of the motor one, a driven sprocket 102 arranged below the driving sprocket 101, a transmission chain 103 drivingly connected between the driving sprocket 101 and the driven sprocket 102, and a slide rail pair 104 arranged along the outside of the transmission chain 103. The rotating tooling 20 or the slider of the slide rail pair 104 is fixedly connected to the transmission chain 103, and the rotating tooling 20 is fixedly connected to the slider of the slide rail pair 104.

[0025] Specifically, the first motor is a servo motor or a stepper motor. The driving gear disk 101 and the driven gear disk 102 are arranged vertically. When the first motor starts, it drives the driving gear disk 101 to drive the running of the rotating chain, and the driven gear disk 102 rotates accordingly and transmits the rotation to the rotating tooling 20 or the slide rail pair 104, thereby driving the rotating tooling 20 to move up and down reciprocally, so that the spraying mechanism 30 gradually sprays the inner hole of the screw sleeve. Compared with the general lifting mechanism 10, there is no obstruction in the up and down direction of the rotating tooling 20, and it is not easy to affect the operation of the lifting mechanism 10 due to dripping paint.

[0026] In another embodiment, the lifting mechanism 10 can also be composed of an electric cylinder and the slide rail pair 104. The output end of the electric cylinder is fixedly connected to the slider of the rotating tooling 20 or the slide rail pair 104, so as to drive the rotating tooling 20 to move up and down reciprocally through the operation of the electric cylinder. In other embodiments, the lifting mechanism 10 can also be composed of a motor, a lead screw and the slide rail pair 104. The rotating tooling 20 is connected to the lead screw. When the motor runs, it drives the lead screw and converts the rotational motion into a reciprocating linear motion up and down, thereby driving the rotating tooling 20 to move up and down reciprocally.

[0027] In one embodiment, please refer to Figure 4 and Figure 5 , the rotating tooling 20 includes a bearing seat 201, a second motor 202 arranged on the back of the bearing seat 201, a bearing 203 installed on the bearing seat 201, and a positioning sleeve 204 connected to the inner ring of the bearing 203. The second motor 202 is in transmission connection with the positioning sleeve 204, and the bearing seat 201 is connected to the lifting mechanism 10. Specifically, the positioning sleeve 204 includes an outer sleeve 2041, an inner sleeve 2042 detachably connected to the outer sleeve 2041, and a ring gear 2043 arranged on the outer periphery of the outer sleeve 2041. The outer sleeve 2041 is in interference fit with the inner ring of the bearing 203, and the ring gear 2043 is connected to the output end of the second motor 202 through a transmission belt 205. The bearing seat 201 is detachably connected to the transmission chain 103 through a fixing component. The second motor 202 is a servo motor or a stepper motor. When the second motor 202 is started, it drives the positioning sleeve 204 to rotate, so that the screw sleeve inserted into the positioning sleeve 204 rotates accordingly.

[0028] In one embodiment, a connection structure between the outer sleeve 2041 and the inner sleeve 2042 is provided. Specifically, a plurality of grooves are formed along the circumferential direction at the upper end of the outer sleeve 2041, and a plurality of protrusions 2044 are arranged along the outer periphery at the upper end of the inner sleeve 2042. The protrusions 2044 are embedded in the grooves to form a clamping structure. In this way, when the second motor 202 drives the outer sleeve 2041 to rotate, the inner sleeve 2042 rotates accordingly, and it is convenient to quickly disassemble and assemble the inner sleeve 2042. It should be noted that the upper hole and the lower hole of the inner sleeve 2042 are large, so as to be able to hold the screw sleeve.

[0029] In one embodiment, a ring cover 206 is detachably arranged at the upper end of the bearing housing 201. An annular groove is formed in the outer periphery of the outer sleeve 2041 near the end. The inner ring of the ring cover 206 is embedded in the annular groove, and the ring cover 206 is of a split structure. Specifically, the ring cover 206 is composed of two semi-circular members and is fixed to the upper end of the bearing housing 201 by screws, which is used to prevent paint from entering the gap between the bearing housing 201 and the positioning sleeve 204, so as to avoid the positioning sleeve 204 from being stuck and immovable.

[0030] In one embodiment, a protective cover 207 is detachably arranged at the lower end of the bearing housing 201, and the protective cover 207 covers the bottom ends of the second motor 202 and the positioning sleeve 204. Specifically, the protective cover 207 is fixed to the bottom end surface of the bearing housing 201 by screws, which is used to prevent paint from entering the mating part between the ring gear 2043 and the transmission belt 205 and the mating part between the output end of the second motor 202 and the transmission belt 205, so as to keep the positioning sleeve 204 rotating smoothly.

[0031] In this embodiment, the inner hole spraying machine further includes a cabinet body 50. A suction fan 40 is arranged at the top of the cabinet body 50. The lifting mechanism 10, the rotating tooling 20 and the spraying mechanism 30 are installed in the cabinet body 50. The spraying mechanism 30 includes a fixing plate 301, a spray gun 302 and a nozzle 303. Fasteners are arranged on the fixing plate 301 for fixing the nozzle 303.

[0032] Specifically, the fixing plate 301 is a bent steel plate and is fixed to the cabinet body 50 by screws. The first motor is fixedly installed in the cabinet body 50, so it is not shown in the figure. The driving gear disk 101 and the driven gear disk 102 are rotatably connected to the cabinet body 50 around a fixed axis. The two slide rail pairs 104 are arranged in parallel and are fixed to the cabinet body 50 by screws. The driving gear disk 101, the driven gear disk 102 and the transmission chain 103 are located between the two slide rail pairs 104.

[0033] In one embodiment, the cabinet body 50 includes two parallel installation positions 501 and a ventilation duct 502 located between the two installation positions 501. Each installation position 501 is used to set the lifting mechanism 10, the rotating tooling 20 and the spraying mechanism 30. Filter plates 503 are arranged on both sides of the ventilation duct 502. The suction fan 40 is arranged at the top of the ventilation duct 502. With such an arrangement, one suction fan 40 can meet the ventilation needs of two sets of spraying mechanisms 30, which not only saves electric energy, but also enables the inner hole spraying machine to have the working efficiency of two sets of spraying mechanisms 30 and reduces the equipment manufacturing cost.

[0034] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; under the concept of this application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of one or more embodiments in this application as described above, and they are not provided in detail for the sake of brevity.

[0035] One or more embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this application shall be included within the scope of protection of this application.

Claims

1. An inner hole spraying machine, characterized in that: include: A lifting mechanism (10), a rotating tool (20) connected to an execution end of the lifting mechanism (10), and a spraying mechanism (30) fixedly arranged directly above the rotating tool (20), wherein the spraying mechanism (30) is connected to an external paint supply system, and the rotating tool (20) is used to insert a screw sleeve and drive the screw sleeve to rotate.

2. The inner hole spraying machine according to claim 1, characterized in that: The lifting mechanism (10) comprises a motor 1, a driving gear disc (101) connected to the output end of the motor 1, a driven gear disc (102) arranged below the driving gear disc (101), a transmission chain (103) connected between the driving gear disc (101) and the driven gear disc (102), and a slide rail pair (104) arranged along the outer side of the transmission chain (103); the rotating tool (20) or the slider of the slide rail pair (104) is fixedly connected to the transmission chain (103); and the rotating tool (20) is fixedly connected to the slider of the slide rail pair (104).

3. The inner hole spraying machine according to claim 1, characterized in that: The rotating tooling (20) comprises a bearing seat (201), a second motor (202) disposed on the back of the bearing seat (201), a bearing (203) mounted on the bearing seat (201), and a positioning sleeve (204) connected to the inner ring of the bearing (203); the second motor (202) is transmission-connected to the positioning sleeve (204); and the bearing seat (201) is connected to the lifting mechanism (10).

4. The inner hole spraying machine according to claim 3, characterized in that: The positioning sleeve (204) comprises an outer sleeve (2041), an inner sleeve (2042) detachably connected to the outer sleeve (2041), and a ring tooth (2043) arranged on the outer periphery of the outer sleeve (2041); the outer sleeve (2041) is interference fit with the inner ring of the bearing (203); and the ring tooth (2043) is connected to the output end of the second motor (202) via a transmission belt (205).

5. The inner hole spraying machine according to claim 4, characterized in that: The upper end of the outer sleeve (2041) is provided with a plurality of grooves along the circumferential direction, and the upper end of the inner sleeve (2042) is provided with a plurality of protrusions (2044) along the outer circumference, wherein the protrusions (2044) are embedded in the grooves to form a clamping structure.

6. The inner hole spraying machine according to claim 4, characterized in that: The upper end of the bearing seat (201) is detachably provided with a ring cover (206), the outer sleeve (2041) is provided with an annular groove on its outer periphery close to the end, the inner ring of the ring cover (206) is embedded in the annular groove, and the ring cover (206) is a split structure.

7. The inner hole spraying machine according to claim 3, characterized in that: A protective cover (207) is detachably provided at the lower end of the bearing seat (201), and the protective cover (207) covers the bottom ends of the second motor (202) and the positioning sleeve (204).

8. The inner hole spraying machine according to claim 1, characterized in that: The spraying mechanism (30) comprises a fixing plate (301), a spray gun (302) and a nozzle (303); a fastener is provided on the fixing plate (301) for fixing the nozzle (303).

9. The inner hole spraying machine according to any one of claims 1 to 8, characterized in that: It also comprises a cabinet (50), the top of which is provided with an exhaust fan (40), and the lifting mechanism (10), the rotating tool (20) and the spraying mechanism (30) are installed in the cabinet (50).

10. The inner hole spraying machine according to claim 9, characterized in that: The cabinet (50) comprises two parallelly distributed mounting positions (501) and a ventilation duct (502) located between the two mounting positions (501); each mounting position (501) is used to set a lifting mechanism (10), a rotating tool (20) and a spraying mechanism (30); filter screens (503) are arranged on both sides of the ventilation duct (502); and the exhaust fan (40) is arranged at the top of the ventilation duct (502).

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