A pneumatic mechanism for mounting a roller on a multi-wire saw

Abstract

The utility model discloses a kind of multi-wire cutting machine roller installation pneumatic mechanism, including roller, main shaft, roller support and sealing cover, the shaft core of roller and main shaft is inserted into cooperation by conical surface, the outer periphery of main shaft has radially protruding piston ring, the roller support includes the outer cover of main shaft outer periphery sealing contact, the outer cover has the working cavity extending to the end of outer cover along axial between the main shaft, sealing cover covers in the end of working cavity, piston ring is located in the working cavity, and the working cavity is separated into complementary intercommunication first cavity and second cavity, outer cover end is equipped with the first gas port of intercommunication with first cavity, sealing cover is equipped with the second gas port of intercommunication with second cavity.The utility model uses pneumatic mode to push main shaft to move, realize the cooperation or separation of main shaft and roller, complete installation and disassembly, greatly shorten the time of operation, reduce the difficulty of roller installation and replacement, reduce the labor intensity of staff.

Description

Technical Field

[0001] This utility model relates to the field of multi-wire cutting machine design technology, and in particular to a pneumatic mechanism for roller mounting in a multi-wire cutting machine. Background Technology

[0002] Multi-wire cutting machines are mainly used for cutting hard non-metallic materials such as quartz crystals, semiconductors, and rare earth materials into sheets. The rollers in a multi-wire cutting machine are supported by spindles at both ends. The drive source rotates the rollers via one spindle, with one spindle normally fixed and the other detachable. During installation, one end of the roller is inserted into the fixed spindle, and then the other spindle is connected to the other end of the roller. Current technology often uses manual methods to disassemble and assemble the spindle and roller, resulting in low work efficiency and high labor intensity.

[0003] In addition, existing spindles mainly dissipate heat by circulating oil in the spacers between bearings. The heat dissipation design is mainly concentrated in the central area and does not take into account the heat dissipation of the entire spindle cross section, especially the outer peripheral area. Some existing technologies also mention setting up cooling channels in the bearing housing, but since the flow channels are axially extended, they cannot cool the entire outer peripheral surface uniformly, resulting in low cooling efficiency. Utility Model Content

[0004] To address the technical problems of low work efficiency and high labor intensity caused by the manual disassembly and assembly of the spindle and roller in existing multi-wire cutting machines, this utility model provides a pneumatic mechanism for roller installation in multi-wire cutting machines to solve the above problems.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a pneumatic mechanism for mounting a roller of a multi-wire cutting machine, including a roller, a main shaft, a roller bracket and a sealing cover. The roller and the shaft core of the main shaft are engaged by a tapered surface insertion. The outer circumferential surface of the main shaft has a radially protruding piston ring. The roller bracket includes an outer cover that is in sealing contact with the outer circumference of the main shaft. There is a working cavity between the outer cover and the main shaft that extends axially to one end of the outer cover. The sealing cover covers the end of the working cavity. The piston ring is located in the working cavity and divides the working cavity into a first cavity and a second cavity that are complementary and interconnected. The end of the outer cover is provided with a first air port that communicates with the first cavity, and the sealing cover is provided with a second air port that communicates with the second cavity.

[0006] In an optional embodiment of this utility model, the main shaft includes a core, a bearing, a flow ring, a housing, and end caps at both ends. The piston ring is located on the surface of the housing, the bearing is located between the core and the flow ring, the outer circumferential surface of the flow ring has multiple interconnected annular grooves, and cooling water flows through the annular grooves. The housing is provided with an inlet channel and an outlet channel that connect the annular grooves to the outside.

[0007] In an optional embodiment of this utility model, a retaining ring is provided between two adjacent annular grooves, and the retaining ring has a notch that connects the two adjacent annular grooves.

[0008] In an optional embodiment of this utility model, the end cap facing the roller has a U-shaped groove for the roller end to be inserted, and the arm on the inner side of the U-shaped groove extends into the roller to form a labyrinth sealing structure.

[0009] In an optional embodiment of this utility model, the housing also has an oil channel extending axially to both ends, and the two end caps have oil ports communicating with the oil channels. The oil ports on the end caps facing the rollers are located at the arm end inside the U-shaped groove.

[0010] In an optional embodiment of this utility model, a spacer is provided between the shaft core and the water flow ring, and bearings are provided at both ends of the spacer. The spacer has a cooling cavity communicating with the bearings at both ends.

[0011] In an optional embodiment of this utility model, support rings are provided at both ends of the shaft core, and the bearing is sandwiched between the support rings and the spacer.

[0012] In an optional embodiment of this utility model, a fixed shaft is further included. The fixed shaft and the main shaft are connected to both ends of the roller, and the center of the fixed shaft and the main shaft are connected by a tie rod.

[0013] In an optional embodiment of this utility model, the center of the shaft core has a shaft hole through which the pull rod passes, and the end of the pull rod abuts against the outer end of the shaft core.

[0014] In an optional embodiment of this utility model, the outer end of the spindle has a pressure cap that is connected to the end cover and covers the pull rod.

[0015] The beneficial effects of this utility model are: (1) This utility model uses pneumatic method to drive the main shaft to move, realize the cooperation or separation of the main shaft and the roller, complete the installation and disassembly, greatly shorten the operation time, reduce the difficulty of roller installation and replacement, and reduce the labor intensity of workers.

[0016] (2) This utility model sets a working chamber on the traditional roller bracket and adds a piston ring on the outer periphery of the main shaft. The combination of the roller bracket, piston ring and sealing cover forms a cylinder structure. Only simple improvements to the existing parts are needed to change the traditional manual operation to pneumatic operation. The improvement cost is low and the work efficiency is greatly improved.

[0017] (3) The present invention also provides a water flow ring on the outside of the bearing inside the main shaft. Cooling water is continuously injected into the water flow ring to achieve a cooling effect and avoid overheating of the gas inside the first cavity and the second cavity.

[0018] (4) The present invention also provides an oil-filled channel outside the flow ring, and the oil applies pressure to the labyrinth seal structure formed by the roller and the end cap to prevent external dust from entering. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a front view of a specific embodiment of the pneumatic mechanism for mounting the rollers of the multi-wire cutting machine described in this utility model; Figure 2 This is an axial sectional view of a specific embodiment of the pneumatic mechanism for mounting the rollers of the multi-wire cutting machine described in this utility model; Figure 3 This is a side view of the outer shell of this utility model; Figure 4 yes Figure 3 Sectional view along axis AA; Figure 5 This is a perspective view of the water flow ring in this utility model; Figure 6 yes Figure 2 Enlarged view of point a in the middle.

[0021] In the diagram, 1. Roller, 2. Main shaft, 201. Shaft core, 202. Piston ring, 203. Bearing, 204. Housing, 205. Front end cover, 206. Rear end cover, 207. Support ring, 208. Spacer, 209. Water flow ring, 210. Pressure cap, 3. Roller bracket, 301. Outer cover, 302. Base, 4. Sealing cover, 5. Working chamber, 501. First chamber, 502. Second chamber, 6. First air port, 7. Second air port, 8. Cooling chamber, 9. Water inlet channel, 10. Annular groove, 11. Water outlet channel, 12. Retaining ring, 1201. Notch, 13. Oil passage, 14. Oil port, 15. U-groove, 16. Fixed shaft, 17. Tie rod, 18. Shaft hole. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] Example 1 like Figure 1 , Figure 2 and Figure 6As shown, a pneumatic mechanism for mounting a roller in a multi-wire cutting machine includes a roller 1, a spindle 2, a roller bracket 3, and a sealing cover 4. When the spindle 2 is assembled with the roller 1, the roller 1 and the spindle core 201 of the spindle 2 are engaged by a tapered insertion. The outer circumferential surface of the spindle 2 has a radially protruding piston ring 202. The roller bracket 3 serves as a support structure for the roller 1 and the spindle 2. The roller bracket 3 includes an outer cover 301 that is in sealing contact with the outer circumference of the spindle 2. There is a working cavity 5 between the outer cover 301 and the spindle 2, extending axially to one end of the outer cover 301. The sealing cover 4 covers the end of the working cavity 5. The piston ring 202 is located inside the working cavity 5 and divides the working cavity 5 into a first cavity 501 and a second cavity 502 that are mutually connected. The end of the outer cover 301 is provided with a first air port 6 that communicates with the first cavity 501, and the sealing cover 4 is provided with a second air port 7 that communicates with the second cavity 502.

[0024] The roller bracket 3, main shaft 2, and sealing cover 4 form a cylinder structure. The roller bracket 3 and the outer circumferential surface of the main shaft 2 form one end face of the cylinder structure, and the sealing cover 4 serves as the other end face. As the amount of gas in the two chambers changes, the piston ring 202 reciprocates within the working chamber 5, achieving axial movement of the main shaft 2. Compared with traditional structures, this invention only requires adding a piston ring 202 to the outside of the main shaft 2 and machining the working chamber 5 on the roller bracket 3. The modification cost is small, and this simple improvement can convert manual operation to pneumatic operation, greatly improving work efficiency.

[0025] The spindle 2 typically includes a spindle core 201, bearings 203, a housing 204, and end caps at both ends, such as... Figure 6 As shown, the end cap is divided into a front end cap 205 and a rear end cap 206. The front end cap 205 is located at the end close to the roller 1. The piston ring 202 is located on the surface of the outer shell 204. The bearing 203 is used to rotatably connect the shaft core 201 and the outer shell 204. Generally, at least two bearings 203 are provided, distributed at the front and rear ends. In this utility model, four bearings 203 are provided.

[0026] To cool the interior of the spindle 2, a spacer 208 is typically installed between the bearings 203. The spacer 208 contains a cooling chamber 8 that communicates with the bearings 203 at both ends. The front cover 205 and the rear cover 206 can be respectively provided with an oil inlet and an oil outlet (not shown in the figure). Cooling is achieved through the circulation of oil within the cooling chamber 8. Support rings 207 are typically installed at the outer ends of both ends of the spindle 201. The bearings 203 are sandwiched between the support rings 207 and the spacer 208. The support rings 207 serve to limit the movement of the bearing ends 203.

[0027] The roller 1 mounting structure typically also includes a fixed shaft 16, which connects to the main shaft 2 at both ends of the roller 1. The fixed shaft 16 and the center of the main shaft 2 are connected by a tie rod 17. Figure 6As shown, the shaft core 201 has a shaft hole 18 at its center for the pull rod 17 to pass through. The end of the pull rod 17 abuts against the outer end of the shaft core 201. The roller bracket 3 also includes a base 302. Both the fixed shaft 16 and the main shaft 2 are supported by the roller bracket 3. During installation, the roller 1 is first fixed to the end of the fixed shaft 16, then the main shaft 2 is moved to align with the roller 1. Next, the pull rod 17 is inserted, and the pull rod 17 is threadedly connected and fixed to the fixed shaft 16. In a preferred embodiment, the outer end of the main shaft 2 has a pressure cap 210 that connects to the end cover and covers the pull rod 17. The pressure cap 210 can provide protection and also prevent dust from entering the interior of the main shaft 2 from the right end face.

[0028] Example 2 Because this utility model includes a cylinder structure outside the main spindle 2, the overall end face size is increased, and the heat dissipation effect on the outer peripheral surface of the main spindle 2 is poor. When the spindle core 201 rotates, the heat generated during operation is gradually transferred to the cylinder structure area, affecting the cylinder's performance. Therefore, this embodiment adds an outer peripheral cooling structure based on embodiment 1, specifically referring to: Figures 3-6 As shown, a water flow ring 209 is provided between the bearing 203 and the housing 204. The outer circumferential surface of the water flow ring 209 has multiple interconnected annular grooves 10. Cooling water flows through the annular grooves 10. The housing 204 is provided with an inlet channel 9 and an outlet channel 11 that connect the annular grooves 10 to the outside.

[0029] Cooling water can enter the annular groove 10 at one end through the inlet channel 9, and gradually spread to other annular grooves 10 through the connecting parts, finally flowing out through the outlet channel 11 through the annular groove 10 at the other end. Cooling is achieved through the circulation of cooling water. The arrangement of multiple annular grooves 10 not only ensures uniform heat dissipation across the entire circumference of the bearing 203, but also guarantees the structural strength of the flow ring 209, preventing deformation of the flow ring 209 and subsequent liquid leakage. Using water as the coolant reduces cooling costs and avoids the complexity of the control program caused by too many oil cooling channels.

[0030] In a preferred embodiment, a retaining ring 12 is provided between two adjacent annular grooves 10. The retaining ring 12 has a notch 1201 that connects the two adjacent annular grooves 10. The notch 1201 is used to connect the adjacent annular grooves 10. Of course, the height of the retaining ring 12 can also be reduced so that there is a radial gap between the retaining ring 12 and the outer shell 204 to allow cooling water to flow.

[0031] Example 3 Based on Embodiment 2, the end cap facing roller 1 has a U-shaped groove 15 for insertion of the end of roller 1, such as... Figure 6 As shown, the U-shaped groove 15 is located at the front end of the front cover 205, and the inner arm of the U-shaped groove 15 extends into the roller 1 to form a labyrinth seal structure. The labyrinth seal structure is designed to prevent dust or particles from entering the spindle 2.

[0032] In a further design, the housing 204 also has an oil channel 13 extending axially to both ends. The two end caps have oil ports 14 communicating with the oil channels 13. The oil port 14 of the front end cap 205 is located at the arm end inside the U-shaped groove 15. After the spindle 2 and roller 1 are assembled, oil is added to the oil channel 13 through the oil port 14 of the rear end cap 206. After filling, the oil port 14 of the rear end cap 206 is sealed. Since the roller 1 and the front end cap 205 are basically in contact, the oil will not overflow or leak outwards when it reaches the oil port 14 of the front end cap 205. A small amount may fill the internal space of the labyrinth seal structure. This oil can compensate for the gaps between the mechanical structures and block external dust or particles.

[0033] In the description of this utility model, it should be understood that the terms "center", "front", "rear", "inner", "outer", "axial", "radial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0035] In this specification, the illustrative expressions of the terms do not necessarily refer to the same embodiments. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0036] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A pneumatic mechanism for mounting rollers on a multi-wire cutting machine, characterized in that: The device includes a roller, a main shaft, a roller bracket, and a sealing cap. The roller and the main shaft core are engaged via a tapered insertion joint. The outer circumferential surface of the main shaft has a radially protruding piston ring. The roller bracket includes an outer cover that is in sealing contact with the outer circumference of the main shaft. There is a working chamber extending axially to one end of the outer cover between the outer cover and the main shaft. The sealing cap covers the end of the working chamber. The piston ring is located inside the working chamber and divides the working chamber into a first cavity and a second cavity that are complementary and interconnected. The end of the outer cover is provided with a first vent that communicates with the first cavity, and the sealing cap is provided with a second vent that communicates with the second cavity.

2. The pneumatic mechanism for mounting the rollers of a multi-wire cutting machine according to claim 1, characterized in that: The main shaft includes a core, bearings, a flow ring, a housing, and end caps at both ends. The piston ring is located on the surface of the housing. The bearing is located between the core and the flow ring. The outer circumferential surface of the flow ring has multiple interconnected annular grooves in which cooling water flows. The housing is provided with an inlet channel and an outlet channel that connect the annular grooves to the outside.

3. The pneumatic mechanism for mounting the rollers of a multi-wire cutting machine according to claim 2, characterized in that: A retaining ring is provided between two adjacent annular grooves, and the retaining ring has a notch that connects the two adjacent annular grooves.

4. The pneumatic mechanism for mounting the rollers of a multi-wire cutting machine according to claim 2, characterized in that: The end cap facing the roller has a U-shaped groove for the roller end to be inserted, and the arm inside the U-shaped groove extends into the roller to form a labyrinth seal structure.

5. The pneumatic mechanism for mounting the rollers of a multi-wire cutting machine according to claim 4, characterized in that: The housing also has an oil channel extending axially to both ends, and the two end caps have oil ports communicating with the oil channels. The oil ports on the end caps facing the rollers are located at the arm end inside the U-shaped groove.

6. The pneumatic mechanism for mounting the rollers of a multi-wire cutting machine according to claim 2, characterized in that: A spacer is provided between the shaft core and the water flow ring, and bearings are provided at both ends of the spacer. The spacer has a cooling cavity that communicates with the bearings at both ends.

7. The pneumatic mechanism for mounting the rollers of a multi-wire cutting machine according to claim 6, characterized in that: Both ends of the shaft are provided with support rings, and the bearing is sandwiched between the support rings and the spacer.

8. The pneumatic mechanism for mounting the rollers of a multi-wire cutting machine according to claim 1, characterized in that: It also includes a fixed shaft, which is connected to the main shaft at both ends of the roller, and the center of the fixed shaft and the main shaft are connected by a tie rod.

9. The pneumatic mechanism for mounting the rollers of a multi-wire cutting machine according to claim 8, characterized in that: The shaft core has a central hole through which a pull rod passes, and the end of the pull rod abuts against the outer end of the shaft core.

10. The pneumatic mechanism for mounting the rollers of a multi-wire cutting machine according to claim 9, characterized in that: The outer end of the spindle has a pressure cap that connects to the end cover and covers the pull rod.

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