Multifunctional ejector pin clamp for sapphire
By designing a limiting sleeve and a position adjustment mechanism, the sapphire multi-functional ejector pin clamp achieves multi-point contact limiting, solving the problems of poor adaptability and low positioning accuracy of traditional clamps, and improving clamping stability and positioning accuracy.
Patent Information
- Application Number
- CN202520447443.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-14
AI Technical Summary
Traditional sapphire ejector pin clamps cannot be dynamically adjusted, have poor adaptability, and their limiting function relies on a single contact point, resulting in decreased positioning accuracy.
The design incorporates a limiting sleeve and a position adjustment mechanism. The tapered body makes multi-point contact with the end of the workpiece, and the adjustable limiting sleeve and support arm enhance clamping stability.
It enables dynamic adjustment based on workpiece size, improving clamping stability and positioning accuracy, and adapting to high-speed machining and vibration environments.
Smart Images
Figure CN223933909U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clamping tooling technology, specifically to a sapphire multifunctional ejector pin clamp. Background Technology
[0002] Sapphire, a precision material with high hardness and high light transmittance, is widely used in optical components, semiconductor devices, and other fields. During its processing, sapphire crystal rods require precise positioning and clamping using ejector pins to avoid processing errors caused by vibration or misalignment. Traditional ejector pin clamps mostly employ a fixed structure, which has the following problems: First, the ejector pins cannot be dynamically adjusted according to the workpiece size, resulting in poor adaptability; second, the limiting function relies on a single contact point, which is prone to loosening under high-speed processing or external impact, leading to a decrease in positioning accuracy. Utility Model Content
[0003] To address the aforementioned technical deficiencies, the purpose of this utility model is to provide a sapphire multifunctional ejector pin clamp. By setting a limiting sleeve, the limiting sleeve can move on the conical body, cooperating with the conical body to abut against the end of the workpiece, thereby increasing the contact area.
[0004] To solve the above technical problems, this utility model adopts the following technical solution: This utility model provides a sapphire multifunctional ejector pin clamp, including two sets of clamping units symmetrically arranged on a slide rail. Each clamping unit includes a fixed base and an ejector pin unit disposed on the fixed base. The ejector pin unit includes:
[0005] A rod, one end of which is mounted on a fixed base;
[0006] A cone-shaped body is fixed to the end of the rod away from the fixed base, and multiple through slots are provided on the cone-shaped body;
[0007] A limiting sleeve is fitted onto a conical body, and the limiting sleeve is provided with multiple inner protrusions that are adapted to the through groove;
[0008] The position adjustment mechanism, mounted on the rod, is used to adjust the position of the limit sleeve on the conical body.
[0009] Preferably, the position adjustment mechanism includes an adjustment sleeve threaded onto the rod body, and the adjustment sleeve is rotatably connected to the limiting sleeve via a rotatable connection assembly.
[0010] Preferably, the rotating connection assembly includes:
[0011] Multiple support arms, which are hinged to the side wall of the adjusting sleeve;
[0012] An annular groove is formed on the inner wall of the end of the limiting sleeve near the adjusting sleeve;
[0013] An elastomer is disposed on an adjusting sleeve and is used to press the end of the support arm away from the adjusting sleeve against the annular groove.
[0014] Preferably, the side wall of the adjusting sleeve is provided with a plurality of mounting grooves for mounting the support arm, and the elastic body is disposed in the mounting groove.
[0015] Preferably, the end of the mounting groove away from the limiting sleeve is provided with a first abutting part, and the support arm is provided with a second abutting part. When the end of the support arm away from the adjusting sleeve is inserted into the annular groove, the second abutting part abuts against the first abutting part.
[0016] Preferably, the mounting groove is provided with a recess, and the elastic body is provided with a protrusion that is engaged in the recess.
[0017] Preferably, the elastic body is a U-shaped elastic sheet, with one side of the elastic body abutting against the wall of the mounting groove and the other side abutting against the support arm.
[0018] Preferably, the annular groove has a ramp on the side wall away from the adjusting sleeve, and the support arm has a wedge-shaped part that cooperates with the ramp.
[0019] Preferably, when the end of the support arm away from the adjusting sleeve abuts against the annular groove, the angle between the support arm and the end of the adjusting sleeve near the conical body is an acute angle.
[0020] Preferably, the adjusting sleeve is provided with a hexagonal flange.
[0021] The beneficial effects of this utility model are as follows:
[0022] This invention features a limiting sleeve and a position adjustment mechanism. The limiting sleeve can change its position on the conical body through the position adjustment mechanism. This allows the limiting sleeve to be adjusted appropriately according to the contact position between the conical body and the workpiece, ensuring that the conical part presses against the workpiece while the limiting sleeve also presses against the end of the workpiece, further enhancing clamping stability. The adjusting sleeve designed in this invention can move along the rod body when rotating, thereby changing the position of the limiting sleeve and allowing it to press against the workpiece. The support arm designed in this invention can be held in place in the annular groove by the action of the elastic body. When the adjusting sleeve rotates, the end of the support arm can also slide in the annular groove, achieving a detachable rotatable connection between the adjusting sleeve and the limiting sleeve, facilitating assembly. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 A schematic diagram of the overall structure of a sapphire multifunctional ejector pin clamp provided for an embodiment of this utility model.
[0025] Figure 2 This is a frontal perspective view of the ejector pin unit in this utility model.
[0026] Figure 3 This is a perspective view of the ejector unit of this utility model without the limiting sleeve.
[0027] Figure 4 This is a rear-view perspective view of the ejector pin unit in this utility model.
[0028] Figure 5 This is a top view of the ejector pin unit of this utility model.
[0029] Figure 6 for Figure 5 Sectional view at point AA.
[0030] Figure 7 for Figure 6 A magnified view of a portion of point A in the middle.
[0031] Explanation of reference numerals in the attached figures:
[0032] 1. Slide rail, 2. Fixing seat, 3. Ejector pin unit, 4. Rod body, 5. Conical body, 6. Through groove, 7. Limiting sleeve, 8. Inner protrusion, 9. Adjusting sleeve, 10. Support arm, 11. Annular groove, 12. Elastic body, 13. Mounting groove, 14. First abutment part, 15. Second abutment part, 16. Groove, 17. Protrusion part, 18. Slope, 19. Wedge-shaped part, 20. Hexagonal flange. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0034] Example 1:
[0035] like Figures 1 to 7 As shown, Embodiment 1 of this utility model provides a sapphire multifunctional ejector pin clamp, specifically including a slide rail 1 and two sets of clamping units symmetrically slidably mounted on the slide rail 1. Each clamping unit includes a fixed base 2, an ejector pin unit 3, and a position adjustment mechanism. A lead screw is rotatably mounted on the slide rail 1, and the fixed base 2 is threadedly engaged with the lead screw. Rotating the lead screw can change the position of the fixed base 2 on the slide rail 1.
[0036] The ejector unit 3 includes a rod 4, a limiting sleeve 7, and a conical body 5. One end of the rod 4 is inserted and fixed to the fixing base 2, and the other end is fixedly connected to the conical body 5. Multiple through slots 6 are evenly distributed on the circumferential sidewall of the conical body 5. The limiting sleeve 7 is fitted onto the conical body 5, and the inner side of the limiting sleeve 7 has an inner protrusion 8 that slides with the through slots 6. Figure 2 and Figure 5 As shown, the inner protrusion 8 is inserted into the through groove 6, and the limiting sleeve 7 can move on the conical body 5. When the conical body 5 abuts against the end of the workpiece, the position of the limiting sleeve 7 can be changed by the position adjustment mechanism so that the limiting sleeve 7 can abut against the end of the workpiece and increase the clamping area.
[0037] The position adjustment mechanism designed in this utility model includes an adjustment sleeve 9 threaded onto the rod 4. The adjustment sleeve 9 is rotatably connected to the limiting sleeve 7 via a rotatable connection assembly. In this way, rotating the adjustment sleeve 9 drives the limiting sleeve 7 to move on the conical body 5. To facilitate the rotation of the adjustment sleeve 9, a hexagonal flange 20 is also provided on the adjustment sleeve 9, making it easy to rotate the adjustment sleeve 9 with a wrench.
[0038] This utility model allows the adjusting sleeve 9 to move axially on the rod 4 by rotating the adjusting sleeve 9, thereby adjusting the position of the limiting sleeve 7 on the conical body 5. This allows the conical body 5 to contact the workpiece while the limiting sleeve 7 abuts against the end of the workpiece, forming a multi-point contact limiting, which significantly improves clamping stability and adapts to the dynamic adjustment needs of workpieces of different sizes.
[0039] Example 2
[0040] Based on Embodiment 1, this utility model proposes Embodiment 2, as follows: Figure 6 and Figure 7 As shown, this utility model further incorporates a rotating connection assembly, including four support arms 10 hinged to the sidewall of the adjusting sleeve 9. The adjusting sleeve 9 has a mounting groove 13, and one end of each support arm 10 is hinged into the mounting groove 13. An annular groove 11 is formed in the inner wall of the limiting sleeve 7 near the adjusting sleeve 9. An elastic body 12 is provided in the mounting groove 13. Under the elastic support of the elastic body 12, the end of the support arm 10 away from the adjusting sleeve 9 abuts into the annular groove 11, forming an axial limit. When the adjusting sleeve 9 moves towards the conical body 5, the support arm 10 pushes the limiting sleeve 7 to move in the same direction.
[0041] like Figure 7As shown, to avoid excessive force on the hinge shaft between the support arm 10 and the adjusting sleeve 9, this utility model provides a first abutment portion 14 perpendicular to the rod body 4 on the groove wall of the mounting groove 13 away from the limiting sleeve 7, and a second abutment portion 15 is correspondingly provided at the end of the support arm 10 near the first abutment portion 14. From Figure 7 It can be seen that when the support arm 10 is inserted into the annular groove 11, the second abutting part 15 abuts against the first abutting part 14, forming a limit, thereby reducing the force on the hinge shaft.
[0042] To facilitate the installation of the elastomer 12, the elastomer 12 used in this invention adopts a U-shaped sheet structure with two elastic edges. A protrusion 17 is located at the connection point of the two elastic edges, while a groove 16 is provided on the mounting groove 13. The protrusion 17 can be engaged in the groove 16 to prevent displacement of the elastomer 12 and ensure stable preload of the support arm 10. One side of the elastomer 12 abuts against the wall of the mounting groove 13, and the other side abuts against the support arm 10, providing elastic preload. This allows the support arm 10 to remain abutted in the annular groove 11 by relying on the elastic preload.
[0043] When the adjusting sleeve 9 rotates, the support arm 10 is held in the annular groove 11 under the action of the elastic body 12 and rotates with the adjusting sleeve 9. The end of the support arm 10 slides along the annular groove 11, realizing the rotational connection between the adjusting sleeve 9 and the limiting sleeve 7. At the same time, this connection is detachable. When the support arm 10 is pressed against the rod body 4, the support arm 10 can be moved out of the annular groove 11, thereby releasing the rotational connection.
[0044] Example 3
[0045] like Figure 7 As shown, based on Embodiment 1 and Embodiment 2, this utility model further provides a ramp 18 on the side wall of the annular groove 11 away from the adjusting sleeve 9, and a wedge-shaped portion 19 that cooperates with the ramp 18 is designed at the end of the support arm 10 near the annular groove 11. When the adjusting sleeve 9 moves toward the conical body 5, the wedge-shaped portion 19 can abut against the ramp 18 to prevent the end of the support arm 10 from disengaging from the annular groove 11.
[0046] Meanwhile, the angle between the support arm 10 and the end of the adjusting sleeve 9 near the conical body 5 is an acute angle. When the adjusting sleeve 9 pushes the support arm 10 towards the conical body 5, the end of the support arm 10 effectively abuts against the inner wall of the annular groove 11, making it difficult to disengage from the annular groove 11, significantly improving the reliability of the fixture in high-speed machining or vibration environments. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A sapphire multifunctional ejector pin clamp, characterized in that, It includes two sets of clamping units symmetrically arranged on the slide rail. Each clamping unit includes a fixed base and an ejector pin unit disposed on the fixed base. The ejector pin unit includes: A rod, one end of which is mounted on a fixed base; A cone-shaped body is fixed to the end of the rod away from the fixed base, and multiple through slots are provided on the cone-shaped body; A limiting sleeve is fitted onto a conical body, and the limiting sleeve is provided with multiple inner protrusions that are adapted to the through groove; The position adjustment mechanism, mounted on the rod, is used to adjust the position of the limit sleeve on the conical body.
2. The sapphire multifunctional ejector pin clamp as described in claim 1, characterized in that, The position adjustment mechanism includes an adjustment sleeve threaded onto the rod body, and the adjustment sleeve is rotatably connected to the limit sleeve via a rotatable connection assembly.
3. A sapphire multifunctional ejector pin clamp as described in claim 2, characterized in that, The rotary connection assembly includes: Multiple support arms, which are hinged to the side wall of the adjusting sleeve; An annular groove is formed on the inner wall of the end of the limiting sleeve near the adjusting sleeve; An elastomer is disposed on an adjusting sleeve and is used to press the end of the support arm away from the adjusting sleeve against the annular groove.
4. A sapphire multifunctional ejector pin clamp as described in claim 3, characterized in that, The side wall of the adjusting sleeve is provided with multiple mounting slots for mounting the support arm, and the elastic body is disposed in the mounting slots.
5. A sapphire multifunctional ejector pin clamp as described in claim 4, characterized in that, The mounting groove has a first abutment on the end wall away from the limiting sleeve, and the support arm has a second abutment. When the end of the support arm away from the adjusting sleeve is inserted into the annular groove, the second abutment abuts against the first abutment.
6. A sapphire multifunctional ejector pin clamp as described in claim 4, characterized in that, The mounting slot is provided with a groove, and the elastic body is provided with a protrusion that is engaged in the groove.
7. A sapphire multifunctional ejector pin clamp as described in claim 6, characterized in that, The elastic body is a U-shaped elastic sheet, with one side abutting against the wall of the mounting groove and the other side abutting against the support arm.
8. A sapphire multifunctional ejector pin clamp as described in claim 3, characterized in that, A ramp is provided on the side wall of the annular groove away from the adjusting sleeve, and a wedge-shaped part is provided on the support arm to cooperate with the ramp.
9. A sapphire multifunctional ejector pin clamp as described in claim 3, characterized in that, When the end of the support arm away from the adjusting sleeve rests against the annular groove, the angle between the support arm and the end of the adjusting sleeve near the conical body is an acute angle.
10. A sapphire multifunctional ejector pin clamp as described in claim 2, characterized in that, The adjusting sleeve is provided with a hexagonal flange.