A kind of automatic sand blasting mechanism of inner cavity type workpiece

Abstract

This utility model relates to the field of sandblasting equipment and provides an automatic sandblasting mechanism for internal cavity workpieces. It includes a sandblasting pipe and a base plate, which are fixedly installed. A tubular workpiece is movably mounted in the middle of the base plate, and a lifting assembly matching the workpiece is installed inside the base plate. The axes of the sandblasting pipe and the workpiece coincide in the vertical direction. A torsion tube is rotatably mounted at the bottom of the sandblasting pipe. The top of the sandblasting pipe is connected to a sand feeder, and a high-pressure air pipe is connected to the side wall of the sandblasting pipe. During use, as the workpiece is lifted and lowered, airflow and sand are conveyed downwards through the sandblasting pipe and ejected through the torsion tube. The bottom of the torsion tube is bent at a certain angle, allowing sandblasting of the inner wall of the workpiece. Furthermore, the torsion tube can rotate, enabling omnidirectional sandblasting of the inner wall of the workpiece.

Description

Technical Field

[0001] This utility model belongs to the field of sandblasting equipment, and specifically relates to an automatic sandblasting mechanism for internal cavity workpieces. Background Technology

[0002] After being stored for a long time, the surface of the pipes will have a lot of metal rust. These pipes need to be derusted before they can be further processed and used. Sandblasting requires workers to hold a sandblasting gun head to carry out the work, but it is difficult to insert the gun head into the narrow passage inside the pipe. Secondly, existing workpieces need to be fixed inside the fixture before surface sandblasting can be performed. This requires removing the workpiece, turning it at an angle, and fixing it again, which allows sandblasting to be performed on other parts of the workpiece. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing an automatic sandblasting mechanism for internal cavity workpieces. During operation, as the tubular workpiece is lifted and lowered, airflow and abrasive are transported downwards through the sandblasting pipe and ejected from the torsion pipe. The bottom of the torsion pipe is bent at a certain angle, allowing for sandblasting of the inner wall of the tubular workpiece. Furthermore, the torsion pipe can rotate, enabling all-around sandblasting of the inner wall of the tubular workpiece, thus solving the problems mentioned in the background art.

[0004] To solve the above problems, this utility model provides the following technical solution: an automatic sandblasting mechanism for internal cavity workpieces, including a sandblasting pipe and a base plate, wherein the sandblasting pipe and the base plate are fixedly arranged, a tubular workpiece is movably arranged in the middle of the base plate, and a lifting assembly matching the tubular workpiece is arranged inside the base plate; the axes of the sandblasting pipe and the tubular workpiece coincide in the vertical direction, a torsion tube is rotatably arranged at the bottom of the sandblasting pipe, the bottom of the torsion tube is curved, the top of the sandblasting pipe is connected to a sand feeder, a high-pressure air pipe is connected to the side wall of the sandblasting pipe, the high-pressure air pipe is connected to an air pump, a shaft frame assembly is arranged between the sandblasting pipe and the torsion tube, and a rotation drive mechanism is arranged between the sandblasting pipe and the torsion tube.

[0005] During use, as the pipe workpiece is lifted and lowered, the airflow and sand are conveyed downward through the sandblasting pipe and sprayed out through the twisting pipe. The bottom of the twisting pipe is bent at a certain angle, which allows for sandblasting of the inner wall of the pipe workpiece. Furthermore, the twisting pipe can rotate, allowing for all-around sandblasting of the inner wall of the pipe workpiece.

[0006] Furthermore, the shaft frame assembly includes three annular arrays of surrounding frames. The top end of the surrounding frames is detachably and fixedly connected to the outer wall of the sandblasting pipe. The top end of the torsion pipe is provided with an annular groove. The bottom end of the surrounding frames is inserted into the interior of the annular groove. The end face of the bottom of the surrounding frames is provided with an arc-shaped surface that matches the outer wall of the annular groove.

[0007] When using the sandblasting pipe and the torsion pipe, the bottom of the wrapping frame is inserted into the annular groove, and the top of the wrapping frame is assembled with the outer wall of the sandblasting pipe, which allows the sandblasting pipe and the torsion pipe to be axially connected.

[0008] Furthermore, the rotary drive mechanism includes a sleeve on the side wall of the sandblasting pipe, a pull rod is movably inserted inside the sleeve, a pull ring is provided at the top of the pull rod, a pull rope is provided at the bottom of the pull rod, the end of the pull rope is fixed to the side wall of the torsion pipe after wrapping around the torsion pipe once, and an elastic reset mechanism is provided between the sandblasting pipe and the torsion pipe.

[0009] When in use, as the operator inserts their finger into the pull ring and pulls it upwards, the lever and the pull rope will cause the torsion tube to rotate once.

[0010] Furthermore, the elastic reset mechanism includes a torsion spring groove at the top of the torsion tube, and a mating annular groove matching the torsion spring groove is provided at the bottom of the sandblasting tube. A torsion spring is fixedly installed inside the mating annular groove, and the bottom of the torsion spring is inserted into the inside of the torsion spring groove. The bottom end of the torsion spring is fixedly connected to the inner wall of the torsion spring groove.

[0011] When in use, when the operator releases the pull ring, the torsion tube resets through the elastic potential energy stored in the torsion spring.

[0012] Furthermore, the lifting assembly includes two positioning rods rotatably disposed inside the base plate, and an arc-shaped sleeve is detachably installed inside the positioning rod. The positioning rods are respectively connected to the output shaft of the stepper motor, and the arc-shaped sleeve is attached to the outer wall of the tubular workpiece.

[0013] During use, as the stepper motor drives the positioning roller to rotate, the tubular workpiece can move up and down at a uniform speed.

[0014] Furthermore, the positioning rod is divided into a central column and two end plates, which are detachable. The arc-shaped sleeve has an assembly channel that matches the central column, and the arc-shaped sleeve is fixedly connected to the central column by countersunk bolts.

[0015] When using this product, if the pipe to be processed is a directional pipe, remove the arc sleeve, and then insert the square pipe into the positioning rod.

[0016] Compared with the prior art, the embodiments of this application have the following main advantages: Firstly, when the device is in use, during the lifting and lowering of the pipe workpiece, the airflow and sand are transported downward through the sandblasting pipe and sprayed out through the twisting pipe. The bottom of the twisting pipe is bent at a certain angle, which allows for sandblasting of the inner wall of the pipe workpiece. Furthermore, the twisting pipe can rotate, allowing for all-around sandblasting of the inner wall of the pipe workpiece.

[0017] Secondly, during the rotation of the positioning roller driven by the stepper motor, the tubular workpiece can move up and down at a uniform speed. If the tubing to be processed is a directional tube, the arc sleeve can be removed, and then a square tube can be inserted into the positioning roller. Attached Figure Description

[0018] Figure 1 This is a frontal view of the present invention.

[0019] Figure 2 This is a side view schematic diagram of the present invention.

[0020] Figure 3 This is a schematic diagram of the tubular workpiece of this utility model.

[0021] Figure 4 This is a schematic diagram of the sandblasting pipe of this utility model.

[0022] Figure 5 This utility model Figure 4 A magnified view of part A.

[0023] Figure 6 This is a schematic diagram of the high-pressure air pipe of this utility model.

[0024] Figure 7 This utility model Figure 6 A magnified view of part B.

[0025] Figure 8 This is a schematic diagram of the torsion tube of this utility model.

[0026] Figure 9 This utility model Figure 8 A magnified view of part C.

[0027] Explanation of reference numerals in the attached figures: 1. Sandblasting pipe, 101. High-pressure air pipe, 2. Base plate, 201. Positioning roller, 202. Arc sleeve, 3. Pipe workpiece, 4. Stepper motor, 5. Torsion pipe, 6. Pull rod, 601. Pipe sleeve, 602. Pull rope, 7. Circular frame, 701. Torsion spring, 8. Torsion spring groove, 801. Detailed Implementation

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] This utility model provides an automatic sandblasting mechanism for internal cavity workpieces, such as... Figure 1-9 As shown, the device includes a sandblasting pipe 1 and a base plate 2, which are fixedly installed. A pipe workpiece 3 is movably installed in the middle of the base plate 2, and a lifting assembly matching the pipe workpiece 3 is installed inside the base plate 2. The axes of the sandblasting pipe 1 and the pipe workpiece 3 coincide in the vertical direction. A torsion pipe 5 is rotatably installed at the bottom of the sandblasting pipe 1, and the bottom of the torsion pipe 5 is curved. The top of the sandblasting pipe 1 is connected to a sand feeder, and a high-pressure air pipe 101 is connected to the side wall of the sandblasting pipe 1. The high-pressure air pipe 101 is connected to an air pump. A shaft frame assembly is installed between the sandblasting pipe 1 and the torsion pipe 5, and a rotation drive mechanism is installed between the sandblasting pipe 1 and the torsion pipe 5.

[0031] In this embodiment, during the lifting and lowering process of the pipe workpiece 3, the airflow and sand are conveyed downward through the sandblasting pipe and sprayed out through the twisting pipe 5. The bottom of the twisting pipe 5 is bent at a certain angle, which allows sandblasting of the inner wall of the pipe workpiece 3. Furthermore, the twisting pipe 5 can rotate, which allows for all-around sandblasting of the inner wall of the pipe workpiece 3.

[0032] In a further embodiment of this utility model, such as Figure 1-5 As shown, the shaft frame assembly includes three annular arrays of surrounding frames 7. The top of the surrounding frame 7 is detachably and fixedly connected to the outer wall of the sandblasting pipe 1. The top of the torsion pipe 5 is provided with an annular groove 701. The bottom end of the surrounding frame 7 is inserted into the interior of the annular groove 701. The end face of the bottom of the surrounding frame 7 is provided with an arc-shaped surface that matches the outer wall of the annular groove 701.

[0033] In this embodiment, when the ports of the sandblasting pipe 1 and the torsion pipe 5 are connected, the bottom of the surround frame 7 is inserted into the annular groove 701, and the top of the surround frame 7 is assembled with the outer wall of the sandblasting pipe 1, which allows the sandblasting pipe 1 and the torsion pipe 8 to be axially connected.

[0034] In a further embodiment of this utility model, such as Figure 1-7 As shown, the rotary drive mechanism includes a sleeve 601 on the side wall of the sandblasting pipe 1. A pull rod 6 is movably inserted inside the sleeve 601. A pull ring is provided at the top of the pull rod 6, and a pulling rope 602 is provided at the bottom of the pull rod 6. The end of the pulling rope 602 is fixed to the side wall of the torsion pipe 5 after wrapping around it once. An elastic reset mechanism is provided between the sandblasting pipe 1 and the torsion pipe 5.

[0035] In this embodiment, when the worker inserts their finger into the pull ring and pulls it upwards, the pull rod 6 and the pull rope 602 will cause the torsion tube 5 to rotate one revolution.

[0036] In a further embodiment of this utility model, such as Figure 8-9 As shown, the elastic reset mechanism includes a torsion spring groove 801 at the top of the torsion tube 5, and a mating annular groove matching the torsion spring groove 801 is provided at the bottom of the sandblasting tube 1. A torsion spring 8 is fixedly installed inside the mating annular groove, and the bottom of the torsion spring 8 is inserted into the inside of the torsion spring groove 801. The bottom end of the torsion spring 8 is fixedly connected to the inner sidewall of the torsion spring groove 801.

[0037] In this embodiment, when the worker releases the pull ring, the torsion tube 5 is reset by the elastic potential energy stored in the torsion spring 8.

[0038] In a further embodiment of this utility model, such as Figure 1-3 As shown, the lifting assembly includes two positioning rollers 201 rotatably disposed inside the base plate 2. An arc-shaped sleeve 202 is detachably installed inside the positioning roller 201. The positioning rollers 201 are respectively connected to the output shaft of the stepper motor 4. The arc-shaped sleeve 202 is attached to the outer wall of the tubular workpiece 3.

[0039] In this embodiment, as the stepper motor 4 drives the positioning roller to rotate 201, the tubular workpiece 3 can complete the uniform up-and-down movement.

[0040] In a further embodiment of this utility model, such as Figure 1-3 As shown, the positioning rod 201 is divided into a central column and two hanging plates at both ends. The central column and the two hanging plates at both ends are detachable. The arc-shaped sleeve 202 has an assembly channel inside that matches the central column. The arc-shaped sleeve 202 is fixedly connected to the central column by countersunk bolts.

[0041] In this embodiment, if the pipe to be processed is a directional pipe, the arc sleeve 202 is removed, and then the square pipe can be inserted into the positioning rod 201.

[0042] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0043] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units described above may be implemented in other ways in practice. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0044] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. An automatic sandblasting mechanism for internal cavity workpieces, comprising a sandblasting pipe (1) and a base plate (2), characterized in that: The sandblasting pipe (1) and the base plate (2) are fixedly installed. The pipe workpiece (3) is movably installed in the middle of the base plate (2). The base plate (2) is equipped with a lifting assembly that matches the pipe workpiece (3). The axes of the sandblasting pipe (1) and the pipe workpiece (3) coincide in the vertical direction. A torsion pipe (5) is rotatably provided at the bottom of the sandblasting pipe (1). The bottom of the torsion pipe (5) is curved. The top of the sandblasting pipe (1) is connected to a sand feeder. A high-pressure air pipe (101) is connected to the side wall of the sandblasting pipe (1). The high-pressure air pipe (101) is connected to an air pump. A shaft frame assembly is provided between the sandblasting pipe (1) and the torsion pipe (5). A rotary drive mechanism is provided between the sandblasting pipe (1) and the torsion pipe (5).

2. The automatic internal cavity workpiece sandblasting mechanism according to claim 1, characterized in that: The shaft frame assembly includes three annular arrays of surrounding frames (7). The top of the surrounding frames (7) and the outer wall of the sandblasting pipe (1) are detachably fixedly connected. The top of the torsion pipe (5) is provided with an annular groove (701). The bottom of the surrounding frames (7) is inserted into the interior of the annular groove (701). The bottom end face of the surrounding frames (7) is provided with an arc-shaped surface that matches the outer wall of the annular groove (701).

3. The automatic sandblasting mechanism for internal cavity workpieces according to claim 1, characterized in that: The rotary drive mechanism includes a sleeve (601) on the side wall of the sandblasting pipe (1), a pull rod (6) is movably inserted inside the sleeve (601), a pull ring is provided at the top of the pull rod (6), a pull rope (602) is provided at the bottom of the pull rod (6), the end of the pull rope (602) is fixed on the side wall of the torsion pipe (5) after wrapping around the torsion pipe (5), and an elastic reset mechanism is provided between the sandblasting pipe (1) and the torsion pipe (5).

4. The automatic sandblasting mechanism for internal cavity workpieces according to claim 3, characterized in that: The elastic reset mechanism includes a torsion spring groove (801) at the top of the torsion tube (5), and a mating annular groove matching the torsion spring groove (801) is provided at the bottom of the sandblasting tube (1). A torsion spring (8) is fixedly provided inside the mating annular groove. The bottom of the torsion spring (8) is inserted into the inside of the torsion spring groove (801), and the bottom end of the torsion spring (8) is fixedly connected to the inner wall of the torsion spring groove (801).

5. The automatic sandblasting mechanism for internal cavity workpieces according to claim 1, characterized in that: The lifting assembly includes two positioning rods (201) rotatably arranged inside the base plate (2). An arc sleeve (202) is detachably installed inside the positioning rod (201). The positioning rods (201) are respectively connected to the output shaft of the stepper motor (4). The arc sleeve (202) fits against the outer wall of the tubular workpiece (3).

6. The automatic sandblasting mechanism for internal cavity workpieces according to claim 5, characterized in that: The positioning rod (201) is divided into a central column and two hanging plates at both ends. The central column and the two hanging plates at both ends are detachable. The arc sleeve (202) has an assembly channel inside that matches the central column. The arc sleeve (202) is fixedly connected to the central column by countersunk bolts.

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