Water gap removing device for casting workpiece

Abstract

The utility model provides a casting workpiece water gap removing device which comprises a shell, a driving roller, a tensioning roller and a guide roller are arranged in the shell, a supporting roller is arranged on one side of the end of the shell, the device further comprises a fret saw, the driving roller and the supporting roller are located on the inner side of the fret saw, the tensioning roller is located on the outer side of the fret saw, and the guide roller is located on the outer side of the fret saw. A first shaft is arranged in the middle of the tensioning roller in a penetrating mode, the two ends of the first shaft extend out of the shell, the side wall of the shell is in threaded connection with a rotating sleeve, and a stepped end face is arranged in the rotating sleeve and abuts against the side wall of the end of the first shaft. And an electric handheld fret saw device is adopted, so that the water gap is more convenient to remove.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting, and particularly to a device for removing the sprue of a casting workpiece. Background Art

[0002] The sprue refers to the combined part of the frame and the part formed when the factory casts the model. It is also called the "runner" (gate), which means the inlet and outlet where the heat-melted liquid material flows.

[0003] After the casting is cooled, it is necessary to remove the sprue to obtain a complete workpiece. The existing sprue removal methods include die-cutting method, the method of using a pneumatic shear to remove, pneumatic impact type, etc. The die-cutting method requires customizing corresponding die-cutting molds according to the workpiece, which is relatively costly. For the method of using a pneumatic shear to remove, during the trimming process, if the surface of the workpiece is uneven or is a curved surface, when the sprue is cut off, the remaining amount at its root is relatively large, which is time-consuming and laborious for the subsequent surface trimming of the workpiece. The pneumatic impact type is used for removing the sprue of large castings. If the volume and mass of the workpiece are small, using this equipment will instead cause deformation of the workpiece, and in severe cases, the workpiece will be damaged. Summary of the Invention

[0004] To solve the above problems, the present invention discloses a device for removing the sprue of a casting workpiece, including a housing. A driving roller, a tensioning roller and a guiding roller are arranged inside the housing. One side of the end of the housing is provided with a supporting roller. The device further includes a wire saw. The driving roller and the supporting roller are located inside the wire saw, and the tensioning roller is located outside the wire saw. The driving roller rotates to drive the wire saw to act, and the exposed wire saw is pressed against the sprue to realize the cutting operation. Using a wire saw is easier to control the cutting direction and observe the cutting situation, which is beneficial to the removal of the sprue.

[0005] A first shaft is inserted through the middle of the tensioning roller, and both ends of the first shaft extend out of the housing. The side wall of the housing is threadedly connected to a rotating sleeve. A stepped end face is arranged inside the rotating sleeve, and the stepped end face abuts against the side wall of the end of the first shaft. That is, by rotating the rotating sleeve to change its position, the first shaft can be pushed to move by means of the stepped end face, so as to move the position of the tensioning roller and change the tightness state of the wire saw.

[0006] Preferably, two support rods are fixedly connected to the end of the housing, and the support rods are in an arc shape. A fixing screw is inserted through the two support rods. The supporting roller and the fixing screw are rotatably arranged coaxially. The arc-shaped structure enables the wire saw to have a larger operating space.

[0007] Preferably, a protective side plate is fixedly connected to one side of the two support rods. The protective side plate plays a protective role. Further, a horizontal ear plate is arranged on the side wall of the protective side plate, and the fixing screw passes through the ear plate to realize the fixation of the protective side plate.

[0008] Preferably, a dust-proof ring is nested on the inner wall of one end of the rotating sleeve, and the dust-proof ring is in contact with the side wall of the outer shell. Since the first shaft needs to move, a long hole is provided on the outer shell to prevent external dust from entering the interior of the outer shell, so a dust-proof ring is provided.

[0009] Preferably, a second shaft and a third shaft are arranged inside the outer shell. The driving roller is assembled on the second shaft, a first gear is fixedly connected to the second shaft, a second gear is fixedly connected to the third shaft, and the first gear and the second gear are meshed with each other. The first gear is a large gear and the second gear is a small gear, which belongs to a decelerating assembly method.

[0010] Preferably, a driving motor is fixedly connected inside the outer shell. The output end of the driving motor is fixedly connected with a second bevel gear, and a first bevel gear is fixedly connected to the third shaft. The first bevel gear and the second bevel gear are meshed with each other. When the driving motor is started, the third shaft is driven to rotate through the second bevel gear and the first bevel gear, and the second shaft is driven to rotate by means of the second gear and the first gear.

[0011] Preferably, a cable is arranged at one end of the outer shell. The cable is used for external power supply.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. Adopting a wire saw method and provided with an arcuate support member, the wire saw is relatively flexible and can adjust the cutting posture as much as possible according to the position of the sprue, thereby reducing the residual amount of the sprue on the surface of the workpiece.

[0014] 2. Provided with a rotating sleeve, which can fix the outer shell to keep the device stable, and at the same time can also push the first shaft, that is, control the position of the tensioning roller, and further adjust the tension of the wire saw.

[0015] 3. The whole device adopts a hand-held operation method, which has the advantages of small size and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0017] Figure 2 is a schematic diagram of the transmission structure of the present invention;

[0018] Figure 3 is a three-dimensional schematic diagram of the rotating sleeve of the present invention;

[0019] Figure 4 is this Figure 3 enlarged view of part A in.

[0020] List of reference numerals:

[0021] 1. Protective side plate; 2. Fixed screw; 3. Support roller; 4. Wire saw; 5. Support rod; 6. Rotating sleeve; 7. Housing; 8. Cable; 9. Guide roller; 10. Tensioning roller; 11. First shaft; 12. Driving motor; 13. Step end face; 14. Dust-proof ring; 15. Second shaft; 16. Driving roller; 17. Third shaft; 18. First bevel gear; 19. Second bevel gear; 20. First gear; 21. Second gear. Detailed implementation manner

[0022] The following further clarifies the present invention in conjunction with the accompanying drawings and specific implementation manners. It should be understood that the following specific implementation manners are only used to illustrate the present invention and not to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the accompanying drawings, and the words "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0023] As Figures 1 to 4 shown, a sprue removing device for casting workpieces includes a housing 7. The housing 7 has a two-piece structure forming a cylindrical structure. Inside the housing 7, there are a driving roller 16, a tensioning roller 10 and a guide roller 9. On one side of the end of the housing 7, there is a support roller 3. The device also includes a wire saw 4. The driving roller 16 and the support roller 3 are located inside the wire saw 4, and the tensioning roller 10 is located outside the wire saw 4. The driving roller 16 rotates to enable the wire saw 4 to act for removing the sprue. Relatively speaking, the wire saw 4 is flexible and is more conducive to removing the sprue on an irregular surface. Further, grooves are provided on the middle root side walls of the driving roller 16, the tensioning roller 10, the guide roller 9 and the support roller 3 for accommodating the wire saw 4, which is conducive to positioning.

[0024] A first shaft 11 is inserted through the middle of the tensioning roller 10, and both ends of the first shaft 11 extend out of the housing 7. The first rotating shaft 11 is in sliding fit with the housing 7. The side wall of the housing 7 is threadedly connected to a rotating sleeve 6. Inside the rotating sleeve 6, there is a step end face 13, and the step end face 13 abuts against the end side wall of the first shaft 11. That is, by rotating the rotating sleeve 6, the rotating sleeve 6 moves along the axial direction of the housing 7 and pushes the first shaft 11 to move by means of the step end face 13, so that the tightness of the wire saw 4 can be adjusted.

[0025] Two support rods 5 are fixedly connected to the end of the housing 7, that is, the two support rods 5 are respectively fixedly connected to the two-piece housing 7, and the support rods 5 are bow-shaped, which can leave a relatively large space on one side of the wire saw 4 for convenient sprue removal. A fixed screw 2 is inserted through the two support rods 5, and the support roller 3 and the fixed screw 2 are coaxially rotatably arranged. Through the fixed screw 2, the mutual fixation between the two support rods 5 is realized, and at the same time, the support roller 3 is also supported and fixed.

[0026] Further, screw fixation is provided at the ends of the two housing halves, and the screws are arranged away from the rotating sleeve 6. With the help of the rotating sleeve 6 and the fixing screw 2, the fixation of the device can be achieved with as few components as possible.

[0027] On one side of the two support rods 5, a protective side plate 1 is fixedly connected. An ear plate is provided on the side wall of the protective side plate 1, and the ear plate contacts the side wall of the support rod 5. With the insertion of the fixing screw 2, the fixation of the protective side plate 1 is achieved.

[0028] A dust-proof ring 14 is nested on the inner wall of one end of the rotating sleeve 6, and the dust-proof ring 14 contacts the side wall of the housing 7. Since the first shaft 11 needs sufficient moving space, a long hole is provided on the side wall of the housing 7. To prevent dust from entering from here, the dust-proof ring 14 is provided.

[0029] A second shaft 15 and a third shaft 17 are arranged inside the housing 7. Both the second shaft 15 and the third shaft 17 are rotationally connected to the housing 7. The driving roller 16 is assembled on the second shaft 15. A first gear 20 is fixedly connected to the second shaft 15, and a second gear 21 is fixedly connected to the third shaft 17. The first gear 20 and the second gear 21 mesh with each other.

[0030] A driving motor 12 is fixedly connected inside the housing 7. There is also a retaining ring inside the housing 7 to limit the axial movement of the driving motor 12. The output end of the driving motor 12 is fixedly connected to a second bevel gear 19, and a first bevel gear 18 is fixedly connected to the third shaft 17. The first bevel gear 18 and the second bevel gear 19 mesh with each other. The first bevel gear 18 and the second bevel gear 19 are provided to change the transmission direction. When the driving motor 12 is started, the third shaft 17 is driven to rotate through the first bevel gear 18 and the second bevel gear 19. The second shaft 15 is driven through the second gear 21 and the first gear 20, and the driving roller 16 on the second shaft 15 rotates.

[0031] A cable 8 is provided at one end of the housing 7. It is used to connect to an external power supply to supply power to the driving motor 12. In addition, the device is also provided with structures such as a driving circuit and a switch, which will not be elaborated here.

[0032] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A nozzle removal device for a casting workpiece, characterized in that: The device comprises a housing (7), wherein a driving roller (16), a tensioning roller (10) and a guide roller (9) are arranged inside the housing (7), and a supporting roller (3) is arranged on one side of an end of the housing (7). The device also comprises a wire saw (4), wherein the driving roller (16) and the supporting roller (3) are located on the inner side of the wire saw (4), and the tensioning roller (10) is located on the outer side of the wire saw (4); A first shaft (11) is inserted into the middle of the tensioning roller (10), and both ends of the first shaft (11) extend out of a housing (7), a side wall of the housing (7) is threadedly connected to a rotating sleeve (6), a stepped end surface (13) is provided inside the rotating sleeve (6), and the stepped end surface (13) abuts against the end side wall of the first shaft (11).

2. A nozzle removal device for a casting workpiece according to claim 1, characterized in that: Two support rods (5) are fixedly connected to the ends of the outer shell (7), and the support rods (5) are arched. Fixed screw rods (2) are inserted through the two support rods (5), and the support roller (3) and the fixed screw rod (2) are coaxially rotatable.

3. A nozzle removal device for a casting workpiece according to claim 2, characterized in that: A protective side plate (1) is fixedly connected to one side of the two support rods (5).

4. A nozzle removal device for a casting workpiece according to claim 1, characterized in that: A dustproof ring (14) is nested in the inner wall of one end of the rotating sleeve (6), and the dustproof ring (14) is arranged in contact with the side wall of the outer shell (7).

5. The nozzle removal device for a casting workpiece according to claim 1, characterized in that: A second shaft (15) and a third shaft (17) are provided inside the housing (7); the driving roller (16) is mounted on the second shaft (15); a first gear (20) is fixedly connected to the second shaft (15); a second gear (21) is fixedly connected to the third shaft (17); and the first gear (20) and the second gear (21) are meshed with each other.

6. A nozzle removal device for a casting workpiece according to claim 5, characterized in that: A drive motor (12) is fixedly connected to the interior of the housing (7), a second bevel gear (19) is fixedly connected to the output end of the drive motor (12), a first bevel gear (18) is fixedly connected to the third shaft (17), and the first bevel gear (18) and the second bevel gear (19) are meshed with each other.

7. A nozzle removal device for a casting workpiece according to claim 1, characterized in that: A cable (8) is provided at one end of the housing (7).

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