Quartz tube processing jig

Abstract

The invention discloses a quartz tube processing jig which comprises a graphite attaching block, the graphite attaching block comprises a molding surface attached to a quartz tube, the graphite attaching block is connected with an adjusting seat, the adjusting seat is rotatably connected with an extension rotating rod, the extension rotating rod is sleeved with a limiting sleeve rod, the adjusting seat comprises an adjusting cover, and the limiting sleeve rod is sleeved with the adjusting cover. A plurality of limiting holes are formed in the adjusting cover, communicating gaps are formed between the limiting holes, the width of the communicating gaps is larger than that of the extending rotating rod, the width of the communicating gaps is smaller than that of the limiting sleeve rod, and the limiting sleeve rod can axially slide relative to the extending rotating rod and can be connected with the limiting holes in a clamped mode. According to the quartz tube machining jig, angle adjustment can be rapidly conducted on the holding part and the graphite attaching block, rapid locking and unlocking operation can be conducted, and meanwhile the stability after angle adjustment can be guaranteed.

Description

Technical Field

[0001] This invention relates to the field of quartz tube processing technology, and in particular to a quartz tube processing fixture. Background Technology

[0002] With the development of the semiconductor industry, the dimensional accuracy requirements for quartz components in equipment are becoming increasingly stringent. Quartz tubes, as large internal containers filled with process gases, have a significant impact on the gas flow during production, particularly the curved portion of the sealing tube, which affects equipment performance. Therefore, it is necessary to improve the dimensional accuracy of the curved surface of the sealing tube to meet product design requirements.

[0003] For example, announcement number "CN120622797A" discloses "a quartz tube bending device and method," which includes a worktable. Support legs are installed near the four corners of the bottom of the worktable, and a fixed frame is installed near the right side of the top of the worktable. A connecting shaft is rotatably connected to the inner wall of the fixed frame via a bearing seat. A V-shaped roller is fixedly sleeved on the outer wall of the connecting shaft. A cleaning component for cleaning the V-shaped roller is provided on the fixed frame. Two sets of drive mechanisms for bending quartz tubes are provided on the worktable. However, in practical applications, a fixture is still needed to adjust the curved area of ​​the bent tube. Since manual adjustment is required, and the curved positions are not uniform, and different workers have different usage habits, a single grip angle will affect the adjustment accuracy and efficiency. Summary of the Invention

[0004] In view of the problem mentioned in the background art that the angle of the processing fixture is inconvenient to adjust when quartz tube is being processed, the present invention provides a quartz tube processing fixture that can quickly adjust the angle of the holding part and the graphite block, can perform quick locking and unlocking operations, and can ensure stability after the angle adjustment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] A quartz tube processing fixture includes a graphite block with a shaped surface that conforms to the quartz tube. An adjusting seat is connected to the graphite block, and an extension rod is rotatably connected to the adjusting seat. A limiting sleeve is sleeved on the extension rod. The adjusting seat includes an adjusting cover with a plurality of limiting holes. A communicating gap is provided between each limiting hole. The width of the communicating gap is greater than the width of the extension rod and less than the width of the limiting sleeve. The limiting sleeve can slide axially relative to the extension rod and can engage with the limiting holes.

[0007] In this application, the graphite patch can fit into the arc-shaped area on the quartz tube. The fitting area is a shaped surface, and the shape of the shaped surface needs to match the shape to be trimmed, thereby ensuring the trimming accuracy of the quartz tube. When there are multiple arc-shaped areas on the quartz tube that need to be trimmed, the different positions of each arc-shaped area will cause the angle at which the operator holds the processing fixture to change, and the direction of the operator's force will also change accordingly. At the same time, the operating methods of each operator are different. This means that the relative connection angle between the handle and the graphite patch needs to be adjusted during use. If the conventional bolt and nut fastening method is used, it will lead to cumbersome adjustment steps during processing. In addition, the connection stability between the two needs to be achieved through the tight connection between the nut and the bolt. If the bolt and nut are loose, it will affect the trimming accuracy.

[0008] Therefore, to address the aforementioned problems, this application incorporates an adjustment seat on the graphite block, with an extension rod rotatably connected to the adjustment seat. This extension rod allows operators to remotely manipulate the graphite block for adjustments, preventing heat burns to the curved areas. The extension rod and adjustment seat are rotatably connected. The adjustment seat is equipped with an adjustment cover, which has several limiting holes. These holes can be spaced apart, adjacent, or have overlapping areas. It is essential that all limiting holes are interconnected. The area is a connecting gap, the size of which is smaller than the diameter of the limiting hole. A limiting sleeve is fitted onto the extension rod, the cross-sectional width of which is larger than that of the extension rod. The width of the connecting gap is greater than the cross-sectional width of the extension rod, but smaller than that of the limiting sleeve. This allows the extension rod to rotate freely and switch between the various limiting holes even without the limiting sleeve, thereby changing the relative angle between the extension rod and the adjusting seat. It also allows for matching a suitable force adjustment angle, facilitating adjustment by the operator. The limiting sleeve, fitted onto the extension rod, can slide axially relative to the extension rod. When the limiting sleeve moves closer to the adjusting seat, it engages with the limiting hole. Because the size of the limiting sleeve is larger than the size of the connecting gap, after the limiting sleeve is connected to the limiting hole, it cannot move further through the connecting gap to an adjacent limiting hole. This fixes the position of the extension rod within the limiting hole, ensuring angle locking. Locking is achieved simply by sliding the limiting sleeve relative to the extension rod, and unlocking is also achieved by... The limiting sleeve can slide relative to the extension rotating rod, which is convenient and simple to operate. During the trimming process, it is necessary to ensure that the arc surfaces of the graphite block and the quartz tube are in contact. Therefore, the force direction needs to be towards the graphite block side to ensure stability. Apply force towards the adjusting seat side to ensure that it is stably engaged in the limiting hole. This ensures that the extension rotating rod can be stably fixed in a limiting hole, ensuring that the angle between the extension rotating rod and the adjusting seat is locked. It will not cause the angle deviation due to the bolts and nuts not being tightened in the existing technology, thus improving stability and ensuring the accuracy and reliability of the trimming process.

[0009] Preferably, a rotating shaft is rotatably connected inside the adjusting seat, and an extension rotating rod is connected to the rotating shaft. The limiting holes are arranged circumferentially with the rotation center of the rotating shaft as the center. The rotating shaft is rotatably connected inside the adjusting seat, and the connection between the rotating shaft and the adjusting seat can be a shaft-hole connection or a positioning connection via bearings. The rotating shaft is connected to the extension rotating rod. The limiting holes on the adjusting cover are arranged circumferentially, with the axis of this circumferential arrangement being the rotation center of the rotating shaft. This ensures stable engagement between the limiting sleeve and each limiting hole during the rotation of the extension rotating rod, guaranteeing smooth engagement.

[0010] Preferably, the limiting hole and the limiting sleeve are in clearance fit, and the limiting sleeve and the extension rotating rod are in clearance fit. The clearance fit between the limiting hole and the limiting sleeve, and also between the limiting sleeve and the extension rotating rod, ensures reliability after the limiting sleeve and the limiting hole are engaged, reduces wobbling of the limiting sleeve and the extension rotating rod due to clearance, and thus improves adjustment accuracy.

[0011] Preferably, the limiting sleeve rod has a push handle on the side away from the adjusting seat, and the extension rotating rod has a fixed handle on the side away from the adjusting seat. The push handle includes a hollow portion, and the fixed handle is located within the hollow portion. Since the axial position of the extension rotating rod and the adjusting seat is relatively fixed, allowing only relative rotation, the axial position of the fixed handle is also fixed. The hollow portion on the push handle allows the fixed handle to be located inside. Therefore, during use, the user can use four fingers to press against the fixed handle while the palm presses against the push handle to move the push handle towards the fixed handle, thereby moving the end of the limiting sleeve rod away from the push handle into the limiting hole. This ensures the locking connection between the limiting hole and the limiting sleeve rod, achieving an angle locking effect for the extension rotating rod. Preferably, both the push handle and the fixed handle are made of wood, providing good heat insulation and preventing burns.

[0012] Preferably, the extension rod includes a fixed end block located within the adjustment seat, the limiting sleeve includes a limiting end block near the fixed end block, and a return spring is provided between the fixed end block and the limiting end block. A fixed end block is installed on the extension rod, located inside the adjusting seat. The fixed end block rotates synchronously with the extension rod, without any displacement other than rotation. A limit end block is installed on the limiting sleeve rod. Since the limiting sleeve rod rotates synchronously with the extension rod and can move axially relative to the extension rod, the limiting end block moves synchronously towards the fixed end block. A return spring is installed between the limiting end block and the fixed end block. As the limiting end block moves closer to the fixed end block, it compresses the return spring. Under the pushing pressure of the operator, the return spring remains compressed, keeping the limiting sleeve rod within the limiting hole. After the work is finished, the operator releases the pressure on the limiting sleeve rod, and under the action of the return spring, the limiting sleeve rod springs back and disengages from the limiting hole, achieving a self-resetting effect. At this time, the extension rod can rotate relative to the adjusting seat again, ensuring convenient locking and unlocking, simplifying the operation process, and improving adjustment efficiency.

[0013] Preferably, the return spring is sleeved on the extension rod, and the diameter of the return spring is smaller than the width of the communication gap. Sleeving the return spring on the extension rod ensures its close contact with the extension rod, thereby guaranteeing the stability of the return spring's compression and reset, facilitating the application of force by the return spring, and ensuring that the dimensions of the return spring are similar to the cross-sectional dimensions of the extension rod. This allows the return spring to pass through the communication gap together with the extension rod, thus ensuring that the rotation of the extension rod is not interfered with by the return spring when the limiting sleeve is disengaged from the limiting hole.

[0014] Preferably, both the fixed end block and the limiting end block are provided with recesses for engaging the return spring. When the return spring is compressed to its limit, the height of the return spring is less than the sum of the heights of the two recesses. The fixed end block and the limiting end block are provided with recesses. When the limiting end block and the fixed end block are aligned, the two recesses are aligned, and the return spring can no longer be compressed. This is the maximum compression state of the return spring. It is necessary to ensure that the maximum compression state of the return spring is not reached in this state, thereby ensuring that the return spring can stably return to its original position and avoiding undue compression damage. Therefore, the sum of the heights of the two recesses needs to be greater than the height of the return spring in its maximum compression state.

[0015] Preferably, the extension rod includes a fixed end block located within the adjustment seat, and the limiting sleeve includes a limiting end block near the fixed end block. The fixed end block is provided with a fixing tooth on the side near the limiting end block, and the limiting end block is provided with a limiting tooth on the side near the fixed end block. When the fixed end block and the limiting end block are engaged in the limiting sleeve rod within the limiting hole, they can abut against each other, thereby restricting the continued movement of the limiting sleeve rod and providing support and positioning for it. This allows the operator to apply force simultaneously through both the limiting sleeve rod and the extension rotating rod. Preferably, both the limiting sleeve rod and the extension rotating rod are round rod structures. Therefore, when the limiting sleeve rod is sleeved on the extension rotating rod, it can rotate relative to the extension rotating rod. However, once the angle adjustment is complete and the limiting sleeve rod is located within the limiting hole, the relative rotation of the limiting sleeve rod can affect the operator's force application stability. Therefore, a fixing tooth is provided on the fixed end block, and a limiting tooth is provided on the limiting end block. After the limiting end block abuts against the fixed end block, the limiting tooth and the fixing tooth can engage, thereby limiting the rotation of the limiting sleeve rod. In this state, under the operator's squeezing force, the degrees of freedom of the limiting sleeve rod and the extension rotating rod in all directions are restricted, thus ensuring relative stability.

[0016] Preferably, the fixed teeth and / or limiting teeth are provided with docking guide surfaces. The docking guide surfaces can be provided on either the fixed teeth or the limiting teeth, or on both. This ensures smooth meshing between the limiting and fixed teeth. Furthermore, since the limiting sleeve can rotate, it is impossible to guarantee that the limiting and fixed teeth will be completely misaligned before docking. The docking guide surfaces provide guidance for docking, resulting in more stable docking between the limiting and fixed teeth.

[0017] Preferably, the adjusting seat has base plates on both sides, and each base plate has connecting holes for bolts to connect with the graphite block. The base plates on both sides of the adjusting seat are connected to the graphite block, and the connecting holes on the base plates allow bolts to pass through them for connection, thus ensuring the stability of the connection between the adjusting seat and the graphite block.

[0018] The beneficial effects of this invention are as follows: (1) Through the sleeve relationship between the limit sleeve rod and the extension rotating rod, and the snap-fit ​​connection between the limit sleeve rod and the limit hole, the locking and unlocking actions can be completed quickly. During the locking and unlocking process, the staff can operate with one hand, ensuring the simplicity of the operation. (2) By setting the connection between the limiting tooth and the fixed tooth, the degree of freedom in each direction can be restricted after the limiting sleeve is engaged with the limiting hole, thereby ensuring the stability of the force and improving the trimming accuracy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a partial perspective view of the adjusting seat in this invention.

[0021] Figure 3 This is a partial isometric sectional view of the adjusting seat in this invention.

[0022] Figure 4 This is a partial cross-sectional view of the adjusting seat in this invention.

[0023] In the picture: 1 graphite block, 11 shaped surfaces; 2 Adjusting seat, 21 Adjusting cover, 22 Limiting hole, 23 Communicating gap, 24 Rotating shaft, 25 Base plate, 251 Connecting hole; 3. Extended rotating rod, 31. Fixed handle, 32. Fixed end block, 321. Fixed locking tooth, 322. Connecting guide surface; 4. Limiting lever, 41. Push grip, 42. Hollowed-out part, 43. Limiting end block, 431. Limiting tooth; 5. Return spring, 51. Sink groove. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1: like Figure 1 , 2 As shown, a quartz tube processing fixture includes a graphite block 1, which includes a shaping surface 11 that fits with the quartz tube. An adjustment seat 2 is connected to the graphite block 1, and an extension rod 3 is rotatably connected to the adjustment seat 2. A limiting sleeve 4 is sleeved on the extension rod 3. The adjustment seat 2 includes an adjustment cover 21, which is provided with a plurality of limiting holes 22. A connecting gap 23 is provided between each limiting hole 22. The width of the connecting gap 23 is greater than the width of the extension rod 3 and less than the width of the limiting sleeve 4. The limiting sleeve 4 can slide axially relative to the extension rod 3 and can engage with the limiting holes 22.

[0026] In this embodiment, the graphite patch 1 can fit with the arc area on the quartz tube. The fitting area is the shaping surface 11. The shape of the shaping surface 11 needs to match the shape to be trimmed, thereby ensuring the trimming accuracy of the quartz tube. When there are multiple arc areas on the quartz tube that need to be trimmed, the positions of each arc area are different, which causes the angle at which the operator holds the processing fixture to change, and the direction of the operator's force to change accordingly. At the same time, the operating methods of each operator are also different. This means that the relative connection angle between the handle and the graphite patch 1 needs to be adjusted during use. If the conventional bolt and nut fastening method is used, it will lead to cumbersome adjustment steps during processing. At the same time, the connection stability between the two needs to be achieved through the tight connection between the nut and the bolt. If the bolt and nut are loose, it will affect the trimming accuracy.

[0027] Therefore, to address the aforementioned problems, this embodiment provides an adjustment seat 2 on the graphite block 1, wherein an extension rod 3 is rotatably connected to the adjustment seat 2. The extension rod 3 allows the operator to remotely manipulate the graphite block 1 for trimming, preventing heat burns to the arc area. The extension rod 3 is rotatably connected to the adjustment seat 2, and an adjustment cover 21 is provided on the adjustment seat 2. Several limiting holes 22 are provided on the adjustment cover 21. The limiting holes 22 can have a certain distance between them, be adjacent to each other, or have overlapping areas. It is essential to ensure that the limiting holes 22 are interconnected. The connecting area is the connecting gap 23, the diameter of which is smaller than the diameter of the limiting hole 22. A limiting sleeve 4 is fitted onto the extension rotating rod 3. The cross-sectional width of the limiting sleeve 4 is larger than that of the extension rotating rod 3. The width of the connecting gap 23 is larger than the cross-sectional width of the extension rotating rod 3, but smaller than that of the limiting sleeve 4. This allows the extension rotating rod 3 to rotate freely without the limiting constraint of the limiting sleeve 4, switching between the various limiting holes 22. This changes the relative angle between the extension rotating rod 3 and the adjusting seat 2, and allows for matching a suitable force adjustment angle, facilitating operation by the staff. Adjustment; the limiting sleeve 4, fitted onto the extension rotating rod 3, can slide axially relative to the extension rotating rod 3. After the limiting sleeve 4 moves closer to the adjusting seat 2 by axial displacement, it engages with the limiting hole 22. Since the size of the limiting sleeve 4 is larger than the size of the connecting gap 23, after the limiting sleeve 4 is connected in the limiting hole 22, it cannot move further through the connecting gap 23 to the adjacent limiting hole 22, thus fixing the position of the extension rotating rod 3 in the limiting hole 22 and ensuring the angle locking effect. The locking method only requires the limiting sleeve 4 to slide relative to the extension rotating rod 3. The unlocking method is simply to slide the limiting sleeve 4 relative to the extension rotating rod 3. The operation is convenient and simple. During the adjustment process, it is necessary to ensure that the arc surface between the graphite block 1 and the quartz tube is in contact. Therefore, the force direction needs to be towards the graphite block 1 side. This ensures that the limiting sleeve is stably engaged with the adjusting seat 2 side, thus ensuring that the extension rotating rod 3 can be stably fixed in a limiting hole 22. This ensures that the angle between the extension rotating rod 3 and the adjusting seat 2 is locked, preventing the angle deviation caused by the bolts and nuts not being tightened in the current technology. This improves stability and ensures the accuracy and reliability of the adjustment process.

[0028] Example 2: like Figure 1 , 2As shown, a quartz tube processing fixture includes a graphite block 1, which includes a shaping surface 11 that fits with the quartz tube. An adjustment seat 2 is connected to the graphite block 1, and an extension rod 3 is rotatably connected to the adjustment seat 2. A limiting sleeve 4 is sleeved on the extension rod 3. The adjustment seat 2 includes an adjustment cover 21, which is provided with a plurality of limiting holes 22. A connecting gap 23 is provided between each limiting hole 22. The width of the connecting gap 23 is greater than the width of the extension rod 3 and less than the width of the limiting sleeve 4. The limiting sleeve 4 can slide axially relative to the extension rod 3 and can engage with the limiting holes 22.

[0029] In this embodiment, the graphite patch 1 can fit with the arc area on the quartz tube. The fitting area is the shaping surface 11. The shape of the shaping surface 11 needs to match the shape to be trimmed, thereby ensuring the trimming accuracy of the quartz tube. When there are multiple arc areas on the quartz tube that need to be trimmed, the positions of each arc area are different, which causes the angle at which the operator holds the processing fixture to change, and the direction of the operator's force to change accordingly. At the same time, the operating methods of each operator are also different. This means that the relative connection angle between the handle and the graphite patch 1 needs to be adjusted during use. If the conventional bolt and nut fastening method is used, it will lead to cumbersome adjustment steps during processing. At the same time, the connection stability between the two needs to be achieved through the tight connection between the nut and the bolt. If the bolt and nut are loose, it will affect the trimming accuracy.

[0030] Therefore, to address the aforementioned problems, this embodiment provides an adjustment seat 2 on the graphite block 1, wherein an extension rod 3 is rotatably connected to the adjustment seat 2. The extension rod 3 allows the operator to remotely manipulate the graphite block 1 for trimming, preventing heat burns to the arc area. The extension rod 3 is rotatably connected to the adjustment seat 2, and an adjustment cover 21 is provided on the adjustment seat 2. Several limiting holes 22 are provided on the adjustment cover 21. The limiting holes 22 can have a certain distance between them, be adjacent to each other, or have overlapping areas. It is essential to ensure that the limiting holes 22 are interconnected. The connecting area is the connecting gap 23, the diameter of which is smaller than the diameter of the limiting hole 22. A limiting sleeve 4 is fitted onto the extension rotating rod 3. The cross-sectional width of the limiting sleeve 4 is larger than that of the extension rotating rod 3. The width of the connecting gap 23 is larger than the cross-sectional width of the extension rotating rod 3, but smaller than that of the limiting sleeve 4. This allows the extension rotating rod 3 to rotate freely without the limiting constraint of the limiting sleeve 4, switching between the various limiting holes 22. This changes the relative angle between the extension rotating rod 3 and the adjusting seat 2, and allows for matching a suitable force adjustment angle, facilitating operation by the staff. Adjustment; the limiting sleeve 4, fitted onto the extension rotating rod 3, can slide axially relative to the extension rotating rod 3. After the limiting sleeve 4 moves closer to the adjusting seat 2 by axial displacement, it engages with the limiting hole 22. Since the size of the limiting sleeve 4 is larger than the size of the connecting gap 23, after the limiting sleeve 4 is connected in the limiting hole 22, it cannot move further through the connecting gap 23 to the adjacent limiting hole 22, thus fixing the position of the extension rotating rod 3 in the limiting hole 22 and ensuring the angle locking effect. The locking method only requires the limiting sleeve 4 to slide relative to the extension rotating rod 3. The unlocking method is simply to slide the limiting sleeve 4 relative to the extension rotating rod 3. The operation is convenient and simple. During the adjustment process, it is necessary to ensure that the arc surface between the graphite block 1 and the quartz tube is in contact. Therefore, the force direction needs to be towards the graphite block 1 side. This ensures that the limiting sleeve is stably engaged with the adjusting seat 2 side, thus ensuring that the extension rotating rod 3 can be stably fixed in a limiting hole 22. This ensures that the angle between the extension rotating rod 3 and the adjusting seat 2 is locked, preventing the angle deviation caused by the bolts and nuts not being tightened in the current technology. This improves stability and ensures the accuracy and reliability of the adjustment process.

[0031] like Figure 2As shown, a rotating shaft 24 is rotatably connected inside the adjusting seat 2, and an extension rotating rod 3 is connected to the rotating shaft 24. The limiting holes 22 are arranged circumferentially with the rotation center of the rotating shaft 24 as the center. The rotating shaft 24 is rotatably connected inside the adjusting seat 2. The connection between the rotating shaft 24 and the adjusting seat 2 can be a shaft-hole connection or a positioning connection via bearings. The rotating shaft 24 is connected to the extension rotating rod 3. The limiting holes 22 on the adjusting cover 21 are arranged circumferentially, with the axis of this circumferential arrangement being the rotation center of the rotating shaft 24. This ensures stable engagement between the limiting sleeve 4 and each limiting hole 22 during the rotation of the extension rotating rod 3, guaranteeing smooth engagement.

[0032] like Figure 3 As shown, the limiting hole 22 and the limiting sleeve 4 are in clearance fit, and the limiting sleeve 4 and the extension rotating rod 3 are also in clearance fit. The clearance fit between the limiting hole 22 and the limiting sleeve 4, and between the limiting sleeve 4 and the extension rotating rod 3, ensures the reliability of the connection between the limiting sleeve 4 and the limiting hole 22, reduces the wobbling of the limiting sleeve 4 and the extension rotating rod 3 caused by the clearance, and thus improves the adjustment accuracy.

[0033] like Figure 1 , 2 As shown, a push handle 41 is provided on the side of the limiting sleeve 4 away from the adjusting seat 2, and a fixed handle 31 is provided on the side of the extension rotating rod 3 away from the adjusting seat 2. The push handle 41 includes a hollow part 42, and the fixed handle 31 is located inside the hollow part. The push handle 41 is provided on the limiting sleeve 4, and the fixed handle 31 is provided on the extension rotating rod 3. Since the axial position between the extension rotating rod 3 and the adjusting seat 2 is relatively fixed, they can only rotate relative to each other. Therefore, the axial position of the fixed handle 31 is fixed. The hollow part 42 is provided on the push handle 41, and the fixed handle 31 can be located inside it through the hollow part 42. Therefore, during use, the push handle 41 can be moved towards the fixed handle 31 by pressing the fixed handle 31 with four fingers and pressing the push handle 41 with the palm. This moves the end of the limiting sleeve 4 away from the push handle 41 into the limiting hole 22, ensuring the locking connection between the limiting hole 22 and the limiting sleeve 4, thereby achieving the angle locking effect of the extension rotating rod 3. Preferably, the push handle 41 and the fixed handle 31 are made of wood, which provides good heat insulation and prevents burns.

[0034] like Figure 3 , 4As shown, the extension rod 3 includes a fixed end block 32 located within the adjusting seat 2, and the limiting sleeve 4 includes a limiting end block 43 near the fixed end block 32. A return spring 5 is provided between the fixed end block 32 and the limiting end block 43. The fixed end block 32 is located on the extension rod 3 within the adjusting seat 2 and rotates synchronously with the extension rod 3. During rotation, the fixed end block 32 does not produce any displacement other than rotation. The limiting sleeve 4 is provided with a limiting end block 43. Since the limiting sleeve 4 can rotate synchronously with the extension rod 3 and can move axially relative to the extension sleeve, the limiting end block 43 moves synchronously, i.e., it moves towards the fixed end block 32. A return spring 5 is provided between the limiting end block 43 and the fixed end block 32. A reset spring 5 is provided. During the movement of the limiting end block 43 near the fixed end block 32, the reset spring 5 is compressed. Under the pushing pressure of the operator, the reset spring 5 is always compressed, so that the limiting sleeve 4 is always located in the limiting hole 22. After the work is finished, the operator releases the squeezing force on the limiting sleeve 4. Driven by the reset spring 5, the limiting sleeve 4 rebounds and disengages from the limiting hole 22, forming a self-resetting effect. At this time, the extension rod 3 can rotate relative to the adjusting seat 2 again, thereby ensuring the convenience of locking and unlocking, simplifying the operation process, and improving the adjustment efficiency.

[0035] like Figure 4 As shown, the return spring 5 is sleeved on the extension rod 3, and the diameter of the return spring 5 is smaller than the width of the connecting gap 23. The return spring 5 is sleeved on the extension rod 3, so that the return spring 5 and the extension rod 3 are in close contact, thereby ensuring the stability of the compression and reset of the return spring 5, facilitating the application of force by the return spring 5, and ensuring that the setting size of the return spring 5 is similar to the cross-sectional size of the extension rod 3, so that the return spring 5 can pass through the connecting gap 23 together with the extension rod 3, thereby ensuring that the rotation of the extension rod 3 will not be interfered with by the return spring 5 when the limiting sleeve 4 is disengaged from the limiting hole 22.

[0036] like Figure 3 , 4 As shown, both the fixed end block 32 and the limiting end block 43 are provided with recesses 51 for engaging with the return spring 5. When the return spring 5 is compressed to its limit, the height of the return spring 5 is less than the sum of the heights of the two recesses 51. The fixed end block 32 and the limiting end block 43 are provided with recesses 51. When the limiting end block 43 and the fixed end block 32 are aligned, the two recesses 51 are aligned, and the return spring 5 can no longer be compressed. This is the maximum compression state of the return spring 5. It is necessary to ensure that the maximum compression state of the return spring 5 is not reached in this state, thereby ensuring that the return spring 5 can stably return and avoiding undue squeezing damage. Therefore, the sum of the heights of the two recesses 51 needs to be greater than the height of the return spring 5 in its ultimate compression state.

[0037] like Figure 3 , 4 As shown, the extension rod 3 includes a fixed end block 32 located within the adjusting seat 2, and the limiting sleeve rod 4 includes a limiting end block 43 near the fixed end block 32. The fixed end block 32 has a fixing tooth 321 near the limiting end block 43, and the limiting end block 43 has a limiting tooth 431 near the fixed end block 32. When the fixed end block 32 and the limiting end block 43 are engaged in the limiting hole 22, they can abut against each other, thereby limiting the continued movement of the limiting sleeve rod 4 and providing support and positioning for it. This allows the operator to simultaneously apply force through both the limiting sleeve rod 4 and the extension rod 3. Preferably, both the limiting sleeve rod 4 and the extension rod 3 are round rod structures. Therefore, when the limiting sleeve rod 4 is sleeved on the extension rod 3, it can rotate relative to the extension rod 3. After the angle adjustment is completed and the limiting sleeve rod 4 is located within the limiting hole 22... The relative rotation of the limiting sleeve rod 4 will affect the stability of the worker's force application. Therefore, a fixed locking tooth 321 is set on the fixed end block 32, and a limiting locking tooth 431 is set on the limiting end block 43. After the limiting end block 43 abuts against the fixed end block 32, the limiting locking tooth 431 and the fixed locking tooth 321 can engage and mesh, thereby forming a limiting constraint on the rotation of the limiting sleeve rod 4. In this state, under the cooperation of the worker's squeezing force, the degrees of freedom of the limiting sleeve rod 4 and the extended rotating rod 3 in each direction are restricted, thereby ensuring relative stability.

[0038] like Figure 3 As shown, a docking guide surface 322 is provided on the fixed locking tooth 321 and / or the limiting locking tooth 431. The docking guide surface 322 can be provided on either the fixed locking tooth 321 or the limiting locking tooth 431, or on both. This ensures that the limiting locking tooth 431 and the fixed locking tooth 321 can smoothly mesh and dock. Furthermore, since the limiting sleeve 4 can rotate, it cannot be guaranteed that the limiting locking tooth 431 and the fixed locking tooth 321 will be completely misaligned before docking. The docking guide surface 322 provides guidance for docking, allowing the limiting locking tooth 431 and the fixed locking tooth 321 to dock more stably.

[0039] like Figure 1 , 2 As shown, base plates 25 are provided on both sides of the adjusting seat 2. Connecting holes 251 are provided on the base plates 25, and bolts for connecting to the graphite block 1 are installed through the connecting holes 251. The base plates 25 are connected to the graphite block 1 via the connecting holes 251, ensuring the stability of the connection between the adjusting seat 2 and the graphite block 1.

[0040] In addition to the embodiments described above, within the scope disclosed in the claims and specification of this invention, the technical features of this invention can be reselected and combined to form new embodiments. These can be achieved by those skilled in the art without creative effort. Therefore, these embodiments not described in detail in this invention should also be regarded as specific embodiments of this invention and within the protection scope of this invention.

Claims

1. A quartz tube processing fixture, characterized in that, The device includes a graphite block with a shaped surface that fits into a quartz tube. An adjusting seat is connected to the graphite block, and an extension rod is rotatably connected to the adjusting seat. A limiting sleeve is fitted onto the extension rod. The adjusting seat includes an adjusting cover with several limiting holes. A connecting gap is provided between each limiting hole. The width of the connecting gap is greater than the width of the extension rod and less than the width of the limiting sleeve. The limiting sleeve can slide axially relative to the extension rod and can engage with the limiting holes.

2. The quartz tube processing fixture according to claim 1, characterized in that, The adjusting seat is rotatably connected to a rotating shaft, and an extension rotating rod is connected to the rotating shaft. The limiting holes are arranged in a circle with the rotation center of the rotating shaft as the center.

3. The quartz tube processing fixture according to claim 1, characterized in that, The limiting hole and the limiting sleeve are in clearance fit, and the limiting sleeve and the extension rotating rod are in clearance fit.

4. A quartz tube processing fixture according to claim 1, characterized in that, The limiting sleeve rod is provided with a push handle on the side away from the adjusting seat, and the extension rotating rod is provided with a fixed handle on the side away from the adjusting seat. The push handle includes a hollow part, and the fixed handle is located inside the hollow part.

5. A quartz tube processing fixture according to claim 1, characterized in that, The extension rod includes a fixed end block located within the adjustment seat, and the limiting sleeve includes a limiting end block on the side near the fixed end block. A return spring is provided between the fixed end block and the limiting end block.

6. A quartz tube processing fixture according to claim 5, characterized in that, The reset spring is sleeved on the extension rod, and the diameter of the reset spring is smaller than the width of the communication gap.

7. A quartz tube processing fixture according to claim 5, characterized in that, Both the fixed end block and the limiting end block are provided with recesses for engaging and connecting the reset spring. When the reset spring is compressed to its limit, the height of the reset spring is less than the sum of the heights of the two recesses.

8. A quartz tube processing fixture according to claim 1, characterized in that, The extension rod includes a fixed end block located inside the adjustment seat, and the limiting sleeve includes a limiting end block near the fixed end block. The fixed end block is provided with a fixing tooth on the side near the limiting end block, and the limiting end block is provided with a limiting tooth on the side near the fixed end block.

9. A quartz tube processing fixture according to claim 8, characterized in that, The fixed teeth and / or limiting teeth are provided with docking guide surfaces.

10. A quartz tube processing fixture according to any one of claims 1-9, characterized in that, The adjusting seat has base plates on both sides, and the base plates have connecting holes, on which bolts for connecting to the graphite blocks are installed.

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