An apparatus and method for treating the surface of a cast pipe or tube

Abstract

A kind of cast pipe or pipe die surface treatment device and method, by using cast pipe or pipe die surface treatment device to the mechanical, automatic polishing of pipe body inner surface, cast pipe or pipe die surface treatment device includes guide pipe (2), fixed component, moving part and polishing part;The guide pipe (2) is equal to the inner diameter of pipe body (1);The fixed component, moving part and polishing part are sequentially connected can be fixed or moved in the guide pipe (2) or pipe body (1);The moving part is connected with the fixed component by telescopic device C (10);The polishing part is connected with the output shaft of motor (11) fixedly installed on the moving part.This method uses cast pipe or pipe die surface treatment device, and the inner surface of pipe body is polished by mechanical, automatic method, quality is stable, work efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of cast pipe processing and manufacturing, and specifically to an apparatus and method for surface treatment of cast pipes or pipe molds. Background Technology

[0002] In industry, cast iron pipes are the most commonly used cast pipes, formed by casting molten iron. The casting process is chosen from sand casting, continuous casting, and centrifugal casting depending on quality requirements, batch size, and cost. For example, ductile iron pipes are mostly manufactured using centrifugal casting. In many applications, the quality requirements for the inner surface of ductile iron pipes are relatively high. Therefore, the inner surface of the ductile iron pipe needs to be ground to meet the usage requirements. Currently, manual grinding with hand-held grinding tools is often used to improve the inner surface quality of ductile iron pipes. This purely manual grinding method is not only inefficient but also inconsistent in quality, leading to reduced production efficiency, increased processing costs, and unstable product quality. Similarly, in centrifugal casting, pipe molds are used as templates, and these molds also require inner surface grinding. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides an apparatus and method for surface treatment of cast pipes or pipe molds. This method utilizes the apparatus for surface treatment of cast pipes or pipe molds to perform grinding treatment on the inner surface of the pipe body through mechanized and automated methods, resulting in stable quality and high work efficiency.

[0004] The technical solution of the present invention is as follows:

[0005] An apparatus for surface treatment of cast pipes or pipe molds includes a guide tube, a fixing component, a moving component, and a grinding component; the guide tube has the same inner diameter as the pipe body; the fixing component, the moving component, and the grinding component are sequentially connected and can be fixed or moved within the guide tube or the pipe body;

[0006] The fixing component includes a fixing bracket, a top block A, and a telescopic device A. The fixing bracket is cylindrical in shape, smaller than the inner diameter of the guide tube or the tube body. A top block A is provided on the outer periphery of the fixing bracket. One end of the top block A is fixedly connected to the telescopic end of the telescopic device A. The top block A extends and retracts radially along the fixing bracket under the action of the telescopic device A. When the telescopic device A extends, the top block A presses against the inner surface of the guide tube or the tube body, so that the fixing bracket is pressed and fixed against the guide tube or the tube body.

[0007] The movable component is connected to the fixed component via a telescopic device C;

[0008] The movable component includes a movable support, a top block B, and a telescopic device B. The movable support is cylindrical in shape, smaller than the inner diameter of the guide tube or the tube body. A top block B is provided on the outer periphery of the movable support. One end of the top block B is fixedly connected to the telescopic end of the telescopic device B. The top block B extends and retracts radially along the movable support under the action of the telescopic device B. When the telescopic device B extends, the top block B presses against the inner surface of the guide tube or the tube body, so that the movable support is pressed and fixed against the guide tube or the tube body.

[0009] The grinding component is connected to the output shaft of a motor that is fixedly mounted on the moving component;

[0010] The polishing component includes a polishing bracket and a polishing block. The polishing bracket is cylindrical in shape, smaller than the inner diameter of the guide tube or the tube body. A polishing block is provided on the outer periphery of the polishing bracket. An elastic device is provided between the polishing block and the polishing bracket. The polishing block is compressible in the radial direction of the polishing bracket through the elastic device.

[0011] Furthermore, the elastic device is a spring.

[0012] Furthermore, the telescopic devices A, B, and C are electric push rods.

[0013] Preferably, the surfaces of the top block A and top block B that contact the guide tube or tube body are elastic.

[0014] Furthermore, the maximum extension of the telescopic device C is not greater than the effective grinding length of the grinding block.

[0015] Preferably, the grinding block has tapered slopes at both ends.

[0016] An apparatus and method for surface treatment of cast pipes or pipe molds, comprising the following steps:

[0017] 1) Fix the tube body on the same center line as the guide tube;

[0018] In the initial state, both the fixed bracket and the movable bracket are fixed inside the guide tube, telescopic devices A and B are in the extended state, and telescopic device C is in the retracted state.

[0019] 2) Retract the telescopic device B so that the top block B no longer presses against the inner surface of the guide tube or the tube body, extend the telescopic device C, and the moving bracket moves forward under the action of the telescopic device C;

[0020] 3) Extend the telescopic device B so that the top block B presses against the inner surface of the guide tube;

[0021] 4) Retract the telescopic device A so that the top block A no longer presses against the inner surface of the guide tube, retract the telescopic device C, and the fixed bracket moves forward under the retraction action of the telescopic device C;

[0022] 5) Extend the telescopic device A so that the top block A presses against the inner surface of the guide tube or the tube body;

[0023] 6) Start the motor. The motor drives the grinding bracket to rotate, and the grinding block grinds the inner surface of the tube body.

[0024] 7) After the pre-set grinding time, repeat steps 2)-6) until the entire pipe body is ground.

[0025] 8) Follow the reverse steps of the above path to return the fixed bracket, moving bracket and grinding bracket to their initial state.

[0026] The beneficial effects of this invention are as follows:

[0027] 1) The present invention discloses an apparatus and method for surface treatment of cast pipes or pipe molds. The method uses an apparatus for surface treatment of cast pipes or pipe molds to grind the inner surface of the pipe body through mechanized and automated methods, resulting in stable quality and high work efficiency.

[0028] 2) The present invention discloses an apparatus and method for surface treatment of cast pipes or pipe molds. The method uses an apparatus for surface treatment of cast pipes or pipe molds, and realizes the forward movement and grinding operation of the apparatus through the coordinated action of a fixed component, a moving component and a grinding component. Attached Figure Description

[0029] The solutions and advantages of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0030] In the attached diagram:

[0031] Figure 1 This is a schematic diagram of the device structure for surface treatment of cast pipes or pipe molds according to the present invention;

[0032] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0033] The components represented by the various reference numerals in the diagram are:

[0034] 1. Pipe body, 2. Guide pipe, 3. Fixed bracket, 4. Moving bracket, 5. Grinding bracket, 6. Top block A, 7. Top block B, 8. Telescopic device A, 9. Telescopic device B, 10. Telescopic device C, 11. Motor, 12. Grinding block, 13. Spring. Detailed Implementation

[0035] Exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. It should be noted that these embodiments are improved in order to enable a more thorough understanding of this disclosure and to fully convey the scope of this disclosure to those skilled in the art. This disclosure can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0036] It should be understood that when an element is referred to as being "connected" or "linked" to another element, the element may be directly connected or linked to the other element, or there may be an intermediate element. Other terms used to describe the relationship between elements should be interpreted in the same way (e.g., "between," "adjacent," etc.). The directional terms "left and right," "front and back," etc., mentioned in this invention are used only to express relative positional relationships and are not constrained by any specific directional reference in actual application.

[0037] See Figure 1 and Figure 2 The device for surface treatment of cast pipes or pipe molds includes a guide tube 2, a fixing component, a moving component, and a grinding component; the inner diameter of the guide tube 2 is equal to that of the pipe body 1; the fixing component, the moving component, and the grinding component are connected in sequence and can be fixed or moved in the guide tube 2 or the pipe body 1; the function of the guide tube 2 is: in the initial state, the fixing component, the moving component, and the grinding component are inside the guide tube 2, and during operation, they gradually transition from inside the guide tube 2 to inside the pipe body 1, and after grinding is completed, they return to the guide tube 2.

[0038] The fixing component includes a fixing bracket 3, a top block A6, and a telescopic device A8. The fixing bracket 3 is cylindrical in shape with a diameter smaller than that of the guide tube 2 or the tube body 1. A top block A6 is provided on the outer periphery of the fixing bracket 3. One end of the top block A6 is fixedly connected to the telescopic end of the telescopic device A8. The top block A6 extends and retracts radially along the fixing bracket 3 under the action of the telescopic device A8. When the telescopic device A8 extends, the top block A6 presses against the inner surface of the guide tube 2 or the tube body 1, so that the fixing bracket 3 is pressed and fixed against the guide tube 2 or the tube body 1.

[0039] The movable component is connected to the fixed component via a telescopic device C10.

[0040] The movable component includes a movable support 4, a top block B7, and a telescopic device B9. The movable support 4 is cylindrical in shape, smaller than the inner diameter of the guide tube 2 or the tube body 1. A top block B7 is provided on the outer periphery of the movable support 4. One end of the top block B7 is fixedly connected to the telescopic end of the telescopic device B9. The top block B7 extends and retracts radially along the movable support 4 under the action of the telescopic device B9. When the telescopic device B9 extends, the top block B7 presses against the inner surface of the guide tube 2 or the tube body 1, so that the movable support 4 is pressed and fixed against the guide tube 2 or the tube body 1.

[0041] The grinding component is connected to the output shaft of the motor 11, which is fixedly mounted on the moving component.

[0042] The polishing component includes a polishing bracket 5 and a polishing block 12. The polishing bracket 5 is cylindrical in shape, smaller than the inner diameter of the guide tube 2 or the tube body 1. The polishing block 12 is provided on the outer periphery of the polishing bracket 5. An elastic device is provided between the polishing block 12 and the polishing bracket 5. The polishing block 12 can be compressed in the radial direction of the polishing bracket 5 by the elastic device spring 13.

[0043] Specifically, the telescopic devices A8, B9, and C10 are electric push rods.

[0044] To prevent the top blocks A6 and B7 from damaging the inner surface of the guide tube 2 or the tube body 1, the surfaces of the top blocks A6 and B7 that contact the guide tube 2 or the tube body 1 should be elastic.

[0045] To ensure that every part inside the tube body 1 can be polished, the maximum extension of the telescopic device C10 is not greater than the effective polishing length of the polishing block 12.

[0046] Preferably, the grinding block 12 is provided with tapered slopes at both ends, which makes it easier for the grinding block 12 to enter and exit the guide tube 2 or the tube body 1.

[0047] The method of using the above-mentioned device for surface treatment of cast pipes or pipe molds provided in this embodiment includes the following steps:

[0048] The tube body 1 is fixedly placed on the same center line as the guide tube 2. In the initial state, the fixed bracket 3 and the movable bracket 4 are both fixed inside the guide tube 2. The telescopic device A8 and telescopic device B9 are in the extended state, and the telescopic device C10 is in the retracted state.

[0049] Retract the telescopic device B9 so that the top block B7 no longer presses against the inner surface of the guide tube 2 or the tube body 1. Extend the telescopic device C10, and the moving bracket 4 moves forward under the action of the telescopic device C10. Extend the telescopic device B9 so that the top block B7 presses against the inner surface of the guide tube 2. Retract the telescopic device A8 so that the top block A6 no longer presses against the inner surface of the guide tube 2. Retract the telescopic device C10, and the fixed bracket 3 moves forward under the retraction action of the telescopic device C10. Extend the telescopic device A8 so that the top block A6 presses against the inner surface of the guide tube 2 or the tube body 1. Start the motor 11, and the motor drives the grinding bracket 5 to rotate. The grinding block 12 grinds the inner surface of the tube body 1. After grinding for a preset time, repeat steps 2-6 until the entire tube body 1 is ground.

[0050] Reverse the steps above to return the fixed bracket 3, the movable bracket 4, and the grinding bracket 5 to their initial state.

[0051] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An apparatus for surface treatment of cast pipes or pipe molds, characterized in that, It includes a guide tube (2), a fixing component, a moving component, and a grinding component; the inner diameter of the guide tube (2) is equal to that of the tube body (1); the fixing component, the moving component, and the grinding component are connected in sequence and can be fixed or moved in the guide tube (2) or the tube body (1); The fixing component includes a fixing bracket (3), a top block A (6), and a telescopic device A (8). The fixing bracket (3) is cylindrical in shape with a diameter smaller than that of the guide tube (2) or the tube body (1). A top block A (6) is provided on the outer periphery of the fixing bracket (3). One end of the top block A (6) is fixedly connected to the telescopic end of the telescopic device A (8). The top block A (6) expands and contracts radially along the fixing bracket (3) under the action of the telescopic device A (8). When the telescopic device A (8) extends, the top block A (6) presses against the inner surface of the guide tube (2) or the tube body (1) so that the fixing bracket (3) is pressed against and fixed to the guide tube (2) or the tube body (1). The movable component is connected to the fixed component via a telescopic device C (10); The moving component includes a moving bracket (4), a top block B (7), and a telescopic device B (9). The moving bracket (4) is cylindrical in shape with a diameter smaller than that of the guide tube (2) or the tube body (1). A top block B (7) is provided on the outer periphery of the moving bracket (4). One end of the top block B (7) is fixedly connected to the telescopic end of the telescopic device B (9). The top block B (7) extends and retracts radially along the moving bracket (4) under the action of the telescopic device B (9). When the telescopic device B (9) extends, the top block B (7) presses against the inner surface of the guide tube (2) or the tube body (1) so that the moving bracket (4) is pressed against and fixed to the guide tube (2) or the tube body (1). The grinding component is connected to the output shaft of the motor (11) fixedly mounted on the moving component; The polishing component includes a polishing bracket (5) and a polishing block (12). The polishing bracket (5) is cylindrical in shape, which is smaller than the inner diameter of the guide tube (2) or the tube body (1). The polishing block (12) is provided on the outer periphery of the polishing bracket (5). An elastic device is provided between the polishing block (12) and the polishing bracket (5). The polishing block (12) can be compressed in the radial direction of the polishing bracket (5) by the elastic device.

2. The apparatus for surface treatment of cast pipes or pipe molds according to claim 1, characterized in that, The elastic device is a spring (13).

3. The apparatus for surface treatment of cast pipes or pipe molds according to claim 1, characterized in that, The telescopic devices A (8), B (9) and C (10) are electric push rods.

4. The apparatus for surface treatment of cast pipes or pipe molds according to claim 1, characterized in that, The surfaces of the top block A (6) and top block B (7) that contact the guide tube (2) or the tube body (1) are elastic.

5. The apparatus for surface treatment of cast pipes or pipe molds according to claim 1, characterized in that, The maximum extension of the telescopic device C (10) is not greater than the effective grinding length of the grinding block (12).

6. The apparatus for surface treatment of cast pipes or pipe molds according to claim 1, characterized in that, The grinding block (12) has tapered slopes at both ends.

7. A method for surface treatment of cast pipes or pipe molds, characterized in that, The apparatus for surface treatment of cast pipes or pipe molds according to any one of claims 1-6 includes the following steps: 1) Fix the tube body (1) on the same center line as the guide tube (2); In the initial state, the fixed bracket (3) and the movable bracket (4) are both fixed inside the guide tube (2), the telescopic device A (8) and the telescopic device B (9) are in the extended state, and the telescopic device C (10) is in the retracted state. 2) Retract the telescopic device B (9) so that the top block B (7) no longer presses against the inner surface of the guide tube (2) or the tube body (1), extend the telescopic device C (10), and the moving bracket (4) moves forward under the action of the telescopic device C (10); 3) Extend the telescopic device B (9) so that the top block B (7) presses against the inner surface of the guide tube (2); 4) Retract the telescopic device A (8) so that the top block A (6) no longer presses against the inner surface of the guide tube (2), retract the telescopic device C (10), and the fixed bracket (3) moves forward under the retraction action of the telescopic device C (10); 5) Extend the telescopic device A (8) so that the top block A (6) presses against the inner surface of the guide tube (2) or the tube body (1); 6) Start the motor (11), the motor drives the grinding bracket (5) to rotate, and the grinding block (12) grinds the inner surface of the tube body (1); 7) After the pre-set grinding time, repeat steps 2)-6) until the entire tube body (1) is ground. 8) Follow the reverse steps of the above path to return the fixed bracket (3), the movable bracket (4) and the grinding bracket (5) to their initial state.

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