Outer circle rolling clamp for large-size sapphire crystal bar

Abstract

The utility model discloses a large-size sapphire crystal bar outer circle rolling clamp, which relates to the technical field of sapphire crystal processing equipment and comprises a base arranged on a workbench, a supporting seat arranged on the base and a jackscrew tail seat arranged on the base and opposite to the supporting seat. The first heating supporting clamp is arranged on a center sleeve of the jackscrew tailstock, and the second heating supporting clamp is arranged on the supporting seat and is concentrically opposite to the first heating supporting clamp. The heating device is arranged in the supporting sleeve, the heating temperature of the heating device is detected through the temperature sensor, and epoxy resin glue is heated to the curing temperature firstly, so that the epoxy resin glue is rapidly cured; and heating and softening the cured epoxy resin glue after processing, taking down the sapphire crystal bar, and cleaning the epoxy resin glue.

Description

Technical Field

[0001] This utility model belongs to the technical field of sapphire crystal processing equipment, specifically relating to a large-size sapphire crystal rod outer circle rounding fixture. Background Technology

[0002] The main purpose of rounding the outer diameter of a sapphire crystal rod is to achieve the required precise outer diameter through grinding, while ensuring surface quality, thus laying the foundation for subsequent processing steps (such as slicing and polishing).

[0003] To achieve the desired roundness of a sapphire crystal rod, a clamp is used to hold both ends of the rod. A grinding machine then rounds the middle section of the rod. Existing clamps apply force to the end faces of the crystal rod to ensure stability. To further stabilize the rod, epoxy resin is sometimes used to bond the contact surfaces between the clamp and the sapphire crystal rod. After processing, the sapphire crystal rod is removed.

[0004] Epoxy resin adhesive requires a certain curing time to achieve a strong bond. Heating is also necessary to soften the epoxy resin when removing the sapphire crystal rod, making removal easier and cleaning the adhesive residue easier. Existing fixtures lack devices to shorten the curing time and accelerate the softening of the epoxy resin. Utility Model Content

[0005] In order to overcome the problems existing in the background technology, this utility model provides a large-size sapphire crystal rod outer circle rounding fixture.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a large-size sapphire crystal rod outer circle rounding fixture, comprising: a base disposed on a worktable, a support seat disposed on the base, a set screw tail seat disposed on the base and disposed relative to the support seat, a first heating support fixture disposed on the top sleeve of the set screw tail seat, and a second heating support fixture disposed on the support seat and concentrically opposite to the first heating support fixture.

[0007] Preferably, the first heating support fixture and the second heating support fixture have the same structure, both including: a support sleeve threadedly connected to the center sleeve or the support seat, a heating device disposed in the support sleeve, and a crystal rod contact surface disposed at the front end of the support sleeve.

[0008] Preferably, the heating device includes: a base disposed within the support sleeve, a groove disposed on the lower bottom surface of the base, a heating wire disposed within the groove, and a temperature sensor disposed on the upper bottom surface of the base.

[0009] Preferably, the power supply line of the heating wire and the thermocouple wire of the temperature sensor are integrated into a combined connector located on the side of the substrate, and the side wall of the support sleeve is provided with a hole to expose the combined connector.

[0010] Preferably, the contact surface of the crystal rod is provided with a plurality of annular grooves, and the side of the support sleeve is provided with a glue injection hole that penetrates all of the annular grooves.

[0011] Preferably, the support base is provided with a shaft hole, and a rotating shaft is provided in the shaft hole. One end of the rotating shaft is provided with a servo motor to drive the rotating shaft to rotate, and the other end of the rotating shaft is provided with a first lead screw that is threadedly engaged with one of the support sleeves.

[0012] Preferably, the center sleeve is provided with a second lead screw that is threaded into another support sleeve.

[0013] The beneficial effects of this utility model are:

[0014] The support sleeve of this utility model is equipped with a heating device. The heating temperature of the heating device is detected by a temperature sensor. First, the epoxy resin is heated to the curing temperature so that the epoxy resin can be cured quickly. After the processing is completed, the cured epoxy resin is heated to soften it. The sapphire crystal rod is then removed and the epoxy resin is cleaned. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of a jig for rounding the outer diameter of a large-sized sapphire crystal rod;

[0016] Figure 2 This is a structural schematic diagram of the first heating support fixture or the second heating support fixture;

[0017] Figure 3 This is a bottom-view structural diagram of the heating device;

[0018] Figure 4 This is a top view of the heating device.

[0019] In the figure: 1. Base; 2. Support seat; 3. Top screw tail seat; 4. Top center sleeve; 5. First heating support fixture; 6. Second heating support fixture; 7. Support sleeve; 8. Base body; 9. Heating wire; 10. Temperature sensor; 11. Combined connector; 12. Annular groove; 13. Crystal rod; 14. Crystal rod contact surface; 15. Glue injection hole; 16. Rotating shaft; 17. Servo motor; 18. First lead screw; 19. Second lead screw. Detailed Implementation

[0020] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below to facilitate understanding by those skilled in the art.

[0021] Please see Figures 1 to 4 This utility model provides a large-size sapphire crystal rod outer diameter rounding clamp, comprising: a base 1 disposed on a worktable; a support seat 2 disposed on the base 1; a set screw tail seat 3 disposed on the base 1 and positioned relative to the support seat 2; a first heating support clamp 5 disposed on a center sleeve 4 of the set screw tail seat 3; and a second heating support clamp 6 disposed on the support seat 2 and concentrically opposite to the first heating support clamp 5. The set screw tail seat 3 is existing technology and is used to adjust the distance between the first heating support clamp 5 and the second heating support clamp 6 to securely clamp the sapphire crystal rod 13.

[0022] The first heating support fixture 5 and the second heating support fixture 6 have the same structure, both including: a support sleeve 7 threadedly connected to the center sleeve 4 or the support base 2, a heating device disposed within the support sleeve 7, and a crystal rod contact surface 14 disposed at the front end of the support sleeve 7. The crystal rod contact surface 14 is coated with epoxy resin and contacts the crystal rod 13. The heating device heats up and cures the epoxy resin. After processing, the heating device heats up and softens the epoxy resin, causing it to detach.

[0023] The heating device includes: a base 8 disposed within the support sleeve 7, a groove on the lower bottom surface of the base 8, a heating wire 9 disposed within the groove, and a temperature sensor 10 disposed on the upper bottom surface of the base 8. The base 8 is made of a thermally conductive material, and the support sleeve 7 is naturally made of stainless steel. The temperature sensor 10 is used to detect the heating temperature and to control the heating temperature through a temperature control device to prevent the epoxy resin from degenerating and failing during the curing stage.

[0024] The power supply line of the heating wire 9 and the thermocouple wire of the temperature sensor 10 are integrated on a combined connector 11 located on the side of the base 8. The side wall of the support sleeve 7 has holes exposing the combined connector 11. The combined connector 11 connects to a controller, which includes an STM32 microcontroller, a digital-to-analog converter module for the temperature sensor 10, a control panel with a display, a power supply circuit for the heating wire 9, and an adjustment control module. It may also include an ON / OFF temperature control module.

[0025] The contact surface 14 of the crystal rod is provided with a plurality of annular grooves 12, and the side of the support sleeve 7 is provided with injection holes 15 that penetrate all the annular grooves 12. The crystal rod 13 is initially clamped between the second heating support clamp 6 and the first heating support clamp 5. After centering is completed, epoxy resin adhesive with added curing agent is injected through the injection holes 15. The annular grooves 12 ensure that the epoxy resin adhesive is evenly distributed and increase the bonding strength.

[0026] The support base 2 has a shaft hole, and a rotating shaft 16 is provided in the shaft hole. One end of the rotating shaft 16 is provided with a servo motor 17 for driving the rotating shaft 16 to rotate, and the other end of the rotating shaft 16 is provided with a first lead screw 18 that is threadedly engaged with one of the support sleeves 7. The servo motor 17 also includes a control module for adjusting the speed of the servo motor 17 to drive the sapphire crystal rod 13 to rotate accordingly.

[0027] The top sleeve 4 is provided with a second lead screw 19 that is threadedly engaged with another support sleeve 7. The second lead screw 19 enables the first heating support clamp 5 to be mounted on the top screw tailstock 3.

[0028] The principle of this utility model for a large-size sapphire crystal rod outer circle rounding fixture is as follows:

[0029] This invention utilizes the heat-curing and heat-softening properties of epoxy resin adhesives. The suitable temperature for heat curing epoxy resin is typically between 80℃ and 120℃. This temperature range ensures that the curing agent and epoxy resin can react fully to form a strong structure. Heat softening refers to the process by which cured epoxy resin adhesive softens or even melts under heating conditions. The temperature required for this process is usually higher than the glass transition temperature (Tg) of epoxy resin, but lower than its thermal decomposition temperature. Since different types of epoxy resin have different Tg values, the specific temperature for heat softening will also vary. Generally, epoxy resin adhesive may begin to soften at a temperature of 60-80℃, but complete melting may require a higher temperature. Although both involve heating epoxy resin adhesive, they are not contradictory. Heat curing is to allow the epoxy resin adhesive to form a solid structure more quickly, while heat softening is to change the physical state of the cured adhesive layer. Heat curing usually needs to be carried out before the adhesive has cured and controlled within an appropriate temperature range to ensure the curing effect; while heat softening needs to be carried out after the adhesive has cured and requires a higher temperature to soften it. After heating and curing, a hard, solid adhesive layer is obtained, while after heating and softening, a liquid or semi-liquid adhesive may be obtained. Based on this principle, the first heating support fixture 5 and the second heating support fixture 6 can shorten the curing time required for epoxy resin adhesive, and adhesive application can be performed after centering is completed.

[0030] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A jig for rounding the outer diameter of a large-size sapphire crystal rod, characterized in that, include: A base (1) is provided on the workbench, a support seat (2) is provided on the base (1), a top screw tail seat (3) is provided on the base (1) and is provided relative to the support seat (2), a first heating support clamp (5) is provided on the top sleeve (4) of the top screw tail seat (3), and a second heating support clamp (6) is provided on the support seat (2) and is concentrically opposite to the first heating support clamp (5).

2. The large-size sapphire crystal rod outer circle rounding fixture according to claim 1, characterized in that, The first heating support clamp (5) and the second heating support clamp (6) have the same structure, both including: a support sleeve (7) threadedly connected to the top sleeve (4) or the support base (2), a heating device disposed in the support sleeve (7), and a crystal rod contact surface (14) disposed at the front end of the support sleeve (7).

3. A large-size sapphire crystal rod outer circle rounding fixture according to claim 2, characterized in that, The heating device includes: a base (8) disposed in the support sleeve (7), a groove disposed on the bottom surface of the base (8), an electric heating wire (9) disposed in the groove, and a temperature sensor (10) disposed on the top surface of the base (8).

4. A large-size sapphire crystal rod outer circle rounding fixture according to claim 3, characterized in that, The power supply line of the heating wire (9) and the thermocouple wire of the temperature sensor (10) are integrated on a combined connector (11) on the side of the base (8), and the side wall of the support sleeve (7) is provided with a hole to expose the combined connector (11).

5. A large-size sapphire crystal rod outer circle rounding fixture according to claim 4, characterized in that, The contact surface (14) of the crystal rod is provided with a plurality of annular grooves (12), and the side of the support sleeve (7) is provided with a glue injection hole (15) that penetrates all the annular grooves (12).

6. A large-size sapphire crystal rod outer circle rounding fixture according to claim 2, characterized in that, The support base (2) is provided with a shaft hole, and a rotating shaft (16) is provided in the shaft hole. One end of the rotating shaft (16) is provided with a servo motor (17) that drives the rotating shaft (16) to rotate, and the other end of the rotating shaft (16) is provided with a first lead screw (18) that is threadedly engaged with one of the support sleeves (7).

7. A large-size sapphire crystal rod outer circle rounding fixture according to claim 6, characterized in that, The top sleeve (4) is provided with a second lead screw (19) that is threadedly engaged with another support sleeve (7).

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