Automatic brushing device for nodular cast iron pipe socket

Abstract

The utility model relates to the technical field of nodular cast iron pipe brushing equipment, in particular to an automatic nodular cast iron pipe socket brushing device which comprises a fixing base, a brushing unit and a driving unit, and the driving unit is arranged on the fixing base and used for driving the brushing unit to slowly rotate around the axial central axis of a nodular cast iron pipe. The brushing unit comprises a brushing body, the vertical distance between the brushing body and the central axis of the nodular cast iron pipe is equal to the inner radius of the nodular cast iron pipe, a material containing cavity is formed in the brushing body, a feed inlet which is communicated with the material containing cavity and can be closed is formed in the brushing body, and a sponge layer is arranged on the side face, facing the end of the inserting opening, of the brushing body. And the sponge layer is communicated with the material containing cavity and is used for brushing a coating on the socket end part of the nodular cast iron pipe. Due to the fact that the sponge can absorb and store a certain amount of coating, the coating can be released more evenly during brushing, meanwhile, the coating is prevented from dripping, and the automatic brushing effect of the inserting opening end of the nodular cast iron pipe is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ductile iron pipe coating equipment, in particular to an automatic coating device for ductile iron pipe sockets. Background Art

[0002] Currently, ductile iron pipes have a socket and a spigot at each end. During the automatic spraying process of the outer wall of the ductile iron pipe using automatic spraying equipment, there is a concern that the paint will spray onto the cement mortar on the inner wall of the ductile iron pipe. Therefore, the spigot end of the ductile iron pipe is usually reserved, and then the coating is manually applied. However, in the process of mass production of ductile iron pipes, the number of ductile iron pipes produced is large, so manual coating is labor-intensive and difficult to ensure the coating quality. Utility Model Content

[0003] One of the purposes of the utility model is to provide an automatic painting device for the spigot of a ductile iron pipe, aiming to solve the technical problems of the existing manual painting of the spigot end of the ductile iron pipe, which causes high labor intensity and difficulty in ensuring the painting quality.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an automatic painting device for the socket of a ductile iron pipe, comprising a fixing seat, a painting unit and a driving unit, wherein the driving unit is arranged on the fixing seat, and the driving unit is connected to the painting unit for driving the painting unit to slowly rotate around the axial center axis of the ductile iron pipe; the painting unit comprises at least one painting body, a material containing cavity is opened inside the painting body, a feeding port which is communicated with the material containing cavity and can be closed is provided on the painting body, a sponge layer is provided on the side of the painting body facing the socket end of the ductile iron pipe, the vertical distance between the sponge layer and the center axis of the ductile iron pipe is equal to the inner radius of the ductile iron pipe, the sponge layer is communicated with the material containing cavity to absorb the paint in the material containing cavity, and the sponge layer is used to fully paint the paint absorbed by itself on the socket end of the ductile iron pipe.

[0005] Furthermore, the automatic painting device for the ductile iron pipe socket of the present invention also includes a telescopic device, and the driving unit is connected to the painting unit through the telescopic device; the telescopic device is used to drive the painting unit to expand and contract along the axial direction of the ductile iron pipe.

[0006] Furthermore, two brushing bodies are provided, and the vertical distance between the sponge layers on the two brushing bodies is equal to the inner diameter of the ductile iron pipe.

[0007] Furthermore, the automatic painting device for the ductile iron pipe spigot of the present invention also includes an automatic alignment device, which is used to control the axial center line of the telescopic end of the telescopic device to be collinear with the axial center axis of the ductile iron pipe.

[0008] Furthermore, the automatic alignment device includes a lifting device, which is arranged on the fixing seat, and a lifting end of the lifting device is drivingly connected to the driving unit for driving the driving unit to move up and down.

[0009] Furthermore, the automatic alignment device also includes a fixed frame, a signal transmitter, a signal receiver and a control system. The signal transmitter and the signal receiver are both controlled by the control system. The signal transmitter is arranged at the center position of the telescopic end of the telescopic device; the signal receiver is arranged on the fixed frame, and the signal receiver is located at the center of the socket of the ductile iron pipe. The control system controls the lifting and lowering of the lifting device according to whether the signal receiver receives the signal sent by the signal transmitter.

[0010] Furthermore, a detection element is provided on the fixing frame, and the detection element is used to detect whether there is a ductile iron pipe at the end of the painting unit facing away from the telescopic device. The control system controls the working state of the lifting device according to the detection result of the detection element.

[0011] Furthermore, a plurality of communication holes communicating with the material containing cavity are provided on the side of the painting body to which the sponge layer is fixed, and the sponge layer is communicated with the material containing cavity through the communication holes.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] When the automatic painting device for the ductile iron pipe spigot of the present invention is in use, the feed port is opened, and the paint is introduced into the material chamber from the position of the feed port. Since the material chamber is communicated with the sponge layer, the paint entering the material chamber will enter the sponge layer and then be adsorbed and stored by the sponge layer. The amount of paint adsorbed and stored on the sponge layer is controlled by controlling the amount of paint added to the material chamber, thereby avoiding the paint on the sponge layer from dripping. After a certain amount of paint is absorbed and stored on the sponge layer, the feed port is closed, and at this time, the paint brush body is driven by the driving unit to rotate around The ductile iron pipe is slowly rotated along the axial center axis, so that the sponge layer rotates slowly around the axial center axis of the ductile iron pipe along with the painting body. In this way, the paint stored on the sponge layer can be evenly released and painted on the sponge end of the ductile iron pipe. Since the sponge has adsorption properties, it can prevent paint from dripping during the painting process, thereby achieving automatic painting effect on the sponge end of the ductile iron pipe, overcoming the defects of the existing manual painting of the sponge end of the ductile iron pipe, which causes high labor intensity and difficulty in ensuring the painting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of the ductile iron pipe spigot coating device of the present invention in a state of coating the spigot end of the ductile iron pipe;

[0015] Figure 2 This is a schematic diagram of the structure of the connection between the connecting piece and the painting body in the embodiment;

[0016] Figure 3 Schematic diagram of the structure of the sponge layer in the embodiment;

[0017] Figure 4 for Figure 2 Schematic diagram of the structure after removing the sponge layer on the painting body;

[0018] Figure 5 for Figure 4 A structural diagram from another angle;

[0019] Figure 6 for Figure 5 A structural diagram from another angle;

[0020] Figure 7 for Figure 1 A top view of

[0021] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 9 Schematic diagram of the structure in the embodiment in which the coating body is not in contact with the socket end of the ductile iron pipe.

[0023] Reference numerals in the accompanying drawings:

[0024] 1. Fixing seat; 2. Painting unit; 20. Painting body; 201. Painting surface; 202. Sponge layer; 203. Feed port; 204. Material chamber; 205. Cover plate; 206. Connecting hole; 3. Telescopic device; 4. Connecting piece; 5. Driving unit; 50. Driving motor; 51. Reducer; 52. Connecting flange; 6. Lifting device; 60. Fixing bracket; 61. Signal transmitter; 62. Signal receiver; 63. Detection element; 7. Ductile iron pipe; 70. Socket; 71. Socket; 710. External chamfered surface; 711. Internal chamfered surface; 712. Connecting surface. DETAILED DESCRIPTION

[0025] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] In the description of the present invention, it should be understood that the terms "width", "up", "down", "front", "back", "top", "bottom", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections, direct connections, or indirect connections through an intermediate medium; they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] Please refer to Figure 1 - Figure 9The utility model provides an automatic painting device for a ductile iron pipe socket, comprising a fixing seat 1, a painting unit 2, a telescopic device 3, a connecting piece 4, a driving unit 5 and an automatic alignment device.

[0030] Reference Figure 1 The driving unit 5 is arranged on the fixing seat 1, and the driving unit 5 is connected to the brushing unit 2. The driving unit 5 is used to drive the brushing unit 2 to rotate slowly around the axial center axis of the ductile iron pipe 7. Specifically, the driving unit 5 is connected to the brushing unit 2 through the telescopic device 3, and the telescopic device 3 is connected to the brushing unit 2 through the connector 4. Among them, the driving unit 5 includes a driving motor 50 and a reducer 51. The output shaft of the driving motor 50 is connected to the reducer 51, and the reducer 51 is connected to the telescopic device 3 through the connecting flange 52. The reducer 51 mainly plays a deceleration role. The telescopic device 3 is used to drive the brushing unit 2 to extend and retract along the axial direction of the ductile iron pipe 7. The telescopic device 3 of this embodiment uses an electric cylinder or a pneumatic cylinder. The telescopic end of the telescopic device 3 is connected to the brushing unit 2 through the connector 4. The axial center axis of the telescopic end of the telescopic device 3 can be collinear with the axial center axis of the ductile iron pipe 7. In this way, the telescopic device 3 is driven to rotate by the driving motor 50 , and the coating unit 2 is driven to rotate slowly around the axial center axis of the ductile iron pipe 7 under the deceleration of the reducer 51 .

[0031] Reference Figure 1 - Figure 7 The coating unit 2 includes at least one coating body 20. The side of the coating body 20 facing the end of the socket 71 of the ductile iron pipe 7 is a coating surface 201. A sponge layer 202 is provided on the coating surface 201. Of course, the sponge layer 202 covers the entire coating surface 201. The vertical distance between the sponge layer 202 and the central axis of the ductile iron pipe 7 is equal to the inner radius of the ductile iron pipe 7. There are two coating bodies 20, which is conducive to improving the coating effect. In addition, if Figure 7 As shown, the vertical distance H between the sponge layers 202 on the two brush bodies 20 is equal to the inner diameter of the ductile iron pipe 7. Figure 1 、 Figure 5 、 Figure 7 and Figure 8A material holding cavity 204 is provided inside the coating body 20, and a feed port 203 communicating with the material holding cavity 204 and capable of being closed is provided on the coating body 20. The feed port 203 is provided on the outer surface of the coating body 20, and the feed port 203 has a cover plate 205 for sealing. When feeding, the cover plate 205 is opened, and the paint can enter the material chamber 204 from the position of the feed port 203 through the feed pipe; since a sponge layer 202 is provided on the side of the end of the socket 71 of the ductile iron pipe 7 on the coating body 20, a plurality of connecting holes 206 communicating with the material chamber 204 are provided on the coating surface 201 of the coating body 20. The connecting holes 206 connect the sponge layer 202 with the material chamber 204, so that the paint in the material chamber 204 enters the sponge layer 202 and is adsorbed and stored by the sponge layer 202; when a certain amount of paint is absorbed and stored on the sponge layer 202, the cover plate 205 is covered to close and seal the feed port 203; the sponge layer 202 is mainly used to fully apply the paint adsorbed by itself to the end of the socket 71 of the ductile iron pipe 7.

[0032] Reference Figure 1 The automatic alignment device is primarily used to control the alignment of the axial centerline of the telescopic end of the telescopic device 3 with the axial centerline of the ductile iron pipe 7. Specifically, the automatic alignment device includes a fixed frame 60, a signal transmitter 61, a signal receiver 62, a lifting device 6, and a control system. The lifting device 6 is mounted on the fixed base 1. The lifting device 6 utilizes an electric cylinder or a pneumatic cylinder. The lifting end of the lifting device 6 is connected to the drive unit 5 for driving the drive unit 5 up and down. Of course, the signal transmitter 61, the lifting device 6, and the signal receiver 62 are all controlled by the control system. The signal transmitter 61 is fixed at the center of the telescopic end of the telescopic device 3; the signal receiver 62 is fixed to the fixed frame 60 and is located at the front center of the socket 70 of the ductile iron pipe 7. The control system controls the lifting of the lifting device 6 based on whether the signal receiver 62 receives the signal sent by the signal transmitter 61. Specifically, it can be understood that when the lifting device 6 drives the drive unit 5 to drive the telescopic device 3 upward, when the signal receiver 62 receives the signal transmitted by the signal transmitter 61, the axial center axis of the telescopic end of the telescopic device 3 is aligned with the axial center axis of the ductile iron pipe 7, and the control system controls the lifting device 6 to stop ascending. It should be noted that the control system requires an existing PLC control system, which is not described here.

[0033] In addition, refer to Figure 1A detection element 63 is also fixed to the fixing frame 60. The fixing frame 60 can be fixed to the fixing base 1 or to a wall, which is not limited here. The detection element 63 can be a sensor, which is used to detect whether the ductile iron pipe 7 is at the end of the painting unit 2 facing away from the telescopic device 3. The control system controls the operating state of the lifting device 6 based on the detection result of the detection element 63. Specifically, it can be understood that when the detection element 63 detects that there is a ductile iron pipe 7 at the end of the painting unit 2 facing away from the telescopic device 3, the detection element 63 feeds back its own detection result to the control system. At this time, the control system controls the lifting device 6 to rise until the signal receiver 62 receives the signal emitted by the signal transmitter 61. The control system then controls the lifting device 6 to stop rising. At this time, the axial center axis of the telescopic end of the telescopic device 3 is aligned with the axial center axis of the ductile iron pipe 7; then, the control system controls the telescopic end of the telescopic device 3 to extend, thereby driving the connecting piece 4 to drive the painting unit 2 to move to contact the end of the socket 71 of the ductile iron pipe 7. Finally, the control system controls the drive motor 50 to start, thereby driving the sponge layer 202 on the painting body 20 to fully apply the paint to the end of the socket 71 of the ductile iron pipe 7. Figure 1 As shown, the end of the socket 71 includes an outer chamfered surface 710, an inner chamfered surface 711, and a connecting surface 712 connecting the inner chamfered surface 711 and the outer chamfered surface 710. Of course, the shape of the sponge layer 202 on the painting body is adapted to the shape of the end of the socket 71, so that the sponge layer on the painting surface 201 can fully apply paint to the end of the socket 71.

[0034] It should be noted that whether the brushing body 20 is in contact with the end of the socket 71 of the ductile iron pipe 7 can be determined by controlling the telescopic device 3 to drive the brushing body 20 to move forward along the axial direction of the ductile iron pipe 7. Specifically, when the brushing body 20 is not in contact with the end of the socket 71 of the ductile iron pipe 7, refer to Figure 9 Assuming that the distance between the coating body 20 and the end of the socket 71 of the ductile iron pipe 7 is L, then setting the telescopic device 3 to drive the coating body 20 to move forward along the axial direction of the ductile iron pipe 7 to a distance equal to or slightly greater than L, the coating body 20 can be brought into contact with the end of the socket 71 of the ductile iron pipe 7. Of course, when the coating body 20 is in contact with the end of the socket 71 of the ductile iron pipe 7, the coating on the sponge layer 202 will not be squeezed out, preventing the coating from entering the cement mortar on the inner wall of the ductile iron pipe 7.

[0035] The working principle of this utility model is:

[0036] When the automatic painting device for the ductile iron pipe socket of the present invention is used, the feed port 203 is first opened, and the paint is transported from the position of the feed port 203 into the material chamber 204 through the feed pipe. Since the material chamber 204 is connected to the sponge layer 202, the paint entering the material chamber 204 will enter the sponge layer 202 and be adsorbed and stored by the sponge layer 202. After a certain amount of paint is absorbed and stored on the sponge layer 202, the feed port 203 is closed; at this time, the axial center line of the telescopic end of the telescopic device 3 is made to be collinear with the axial center axis of the ductile iron pipe 7 through the automatic alignment device, and then the telescopic device 3 is controlled to drive the painting body 20 moves to contact the end of the socket 71 of the ductile iron pipe 7. At this time, the control system controls the drive motor 50 to rotate, and under the action of the reducer 51, drives the painting body 20 to slowly rotate around the axial center axis of the ductile iron pipe 7, so that the sponge layer 202 rotates slowly around the axial center axis of the ductile iron pipe 7 with the painting body 20. In this way, the paint stored on the sponge layer 202 can be evenly released and painted on the end of the socket 71 of the ductile iron pipe 7. Since the sponge has adsorption properties, it can avoid paint dripping during the painting process, thereby achieving an automatic painting effect on the end of the socket 71 of the ductile iron pipe 7.

[0037] In summary, the automatic painting device for the ductile iron pipe socket of the present invention can automatically paint the end of the socket 71 of the ductile iron pipe 7, overcoming the defects of the existing manual painting of the end of the socket 71 of the ductile iron pipe 7, which causes high labor intensity and difficulty in ensuring the painting quality.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic painting device for ductile iron pipe sockets, characterized in that: It includes a fixing seat, a brushing unit and a driving unit, wherein the driving unit is arranged on the fixing seat, and the driving unit is connected to the brushing unit for driving the brushing unit to slowly rotate around the axial center axis of the ductile iron pipe; the brushing unit includes at least one brushing body, a material containing cavity is opened inside the brushing body, and a feed port which is communicated with the material containing cavity and can be closed is provided on the brushing body, a sponge layer is provided on the side of the brushing body facing the socket end of the ductile iron pipe, and the vertical distance between the sponge layer and the center axis of the ductile iron pipe is equal to the inner radius of the ductile iron pipe, the sponge layer is communicated with the material containing cavity to absorb the paint in the material containing cavity, and the sponge layer is used to fully brush the paint absorbed by itself on the socket end of the ductile iron pipe.

2. The automatic painting device for ductile iron pipe sockets according to claim 1 is characterized in that: It also includes a telescopic device, through which the driving unit is connected to the brushing unit; the telescopic device is used to drive the brushing unit to extend and retract along the axial direction of the ductile iron pipe.

3. The automatic painting device for ductile iron pipe sockets according to claim 1 is characterized in that: There are two brushing bodies, and the vertical distance between the sponge layers on the two brushing bodies is equal to the inner diameter of the ductile iron pipe.

4. The automatic painting device for ductile iron pipe sockets according to claim 2 is characterized in that: It also includes an automatic alignment device, which is used to control the axial center line of the telescopic end of the telescopic device to be collinear with the axial center axis of the ductile iron pipe.

5. The automatic painting device for ductile iron pipe sockets according to claim 4 is characterized in that: The automatic alignment device includes a lifting device, which is arranged on the fixing seat. The lifting end of the lifting device is drivingly connected to the driving unit and is used to drive the driving unit to move up and down.

6. The automatic painting device for ductile iron pipe sockets according to claim 5 is characterized in that: The automatic alignment device also includes a fixed frame, a signal transmitter, a signal receiver and a control system. The signal transmitter and signal receiver are both controlled by the control system. The signal transmitter is arranged at the center position of the telescopic end of the telescopic device; the signal receiver is arranged on the fixed frame, and the signal receiver is located at the center of the socket of the ductile iron pipe. The control system controls the lifting and lowering of the lifting device according to whether the signal receiver receives the signal sent by the signal transmitter.

7. The automatic painting device for ductile iron pipe sockets according to claim 6 is characterized in that: A detection element is provided on the fixing frame, and the detection element is used to detect whether there is a ductile iron pipe at the end of the painting unit facing away from the telescopic device. The control system controls the working state of the lifting device according to the detection result of the detection element.

8. The automatic painting device for ductile iron pipe sockets according to claim 1 is characterized in that: A plurality of communication holes communicating with the material containing cavity are provided on the side of the painting body on which the sponge layer is fixed, and the sponge layer is communicated with the material containing cavity through the communication holes.

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