Longitudinal lifting mechanism for crystal grinding machine

Abstract

The utility model discloses a longitudinal lifting mechanism for a crystal grinding machine, which comprises a lifting frame body, the lifting frame body comprises an upper plate body and a lower plate body, at least two support plates are fixed between the upper plate body and the lower plate body, the lower plate body is provided with a lower abdicating hole, and the upper plate body is rotatably connected with a grinding disc; the positioning frame body is located in the lifting frame body, the position of the positioning frame body is kept fixed, the bottom end of the positioning frame body is slidably connected into the lower receding hole, and a plurality of linear guide rails are arranged between the positioning frame body and the supporting plate; the lifting assembly comprises a lifting motor fixed to the bottom end of the positioning frame body, a control lead screw is arranged on the lifting motor, a lead screw nut is arranged on the control lead screw, and the lead screw nut is fixedly connected with the lower plate body. According to the mechanism, the lifting frame body achieves lifting motion relative to the positioning frame body through the lifting assembly at the bottom, and the positioning frame body and the lifting frame body are in sliding connection through the linear guide rail, so that stability of the lifting frame body in the lifting process is guaranteed, high-precision lifting of the grinding disc is achieved, and stability of grinding and polishing machining is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of crystal processing equipment, in particular to a vertical lifting mechanism for a crystal grinding machine. Background Art

[0002] During the production process, crystal products require grinding and polishing to achieve a translucent surface. This process is currently accomplished using a retractable grinding wheel. To ensure stable grinding wheel movement, existing grinding and polishing machines utilize a sleeve as a limiter. This sleeve is positioned below the center of the grinding wheel, and the two sleeves maintain surface contact and friction during the lifting process. This creates significant frictional resistance, and over time, the clearance between the sleeves increases due to wear and tear. This results in poor precision control during the grinding wheel lifting process, impacting the surface quality of the finished crystal product. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a vertical lifting mechanism for a crystal grinding machine.

[0004] The technical solution adopted by the utility model is: a vertical lifting mechanism for a crystal grinding machine, comprising: a lifting frame, comprising an upper plate and a lower plate, at least two support plates are fixed between the upper plate and the lower plate, a lower clearance hole is provided on the lower plate, and a grinding disc is rotatably connected to the upper plate;

[0005] A positioning frame is located inside the lifting frame, the positioning frame is kept in a fixed position, the bottom end of the positioning frame is slidably connected to the lower clearance hole, and a plurality of linear guide rails are provided between the positioning frame and the support plate;

[0006] The lifting assembly includes a lifting motor fixed to the bottom end of the positioning frame, the lifting motor is provided with a control screw rod, the control screw rod is sleeved with a screw nut, and the screw nut is fixedly connected to the lower plate body.

[0007] Furthermore, a plurality of extension rods are provided at the bottom end of the positioning frame, the extension rods are slidably connected to the lower clearance holes, and a connecting plate is provided at the bottom end of the extension rods, and the lifting motor is fixed on the connecting plate.

[0008] Furthermore, a connecting through hole is provided on the lower plate body, and the screw nut is fixed in the connecting through hole.

[0009] Furthermore, the support plates are in two pieces, and the two support plates are located on opposite sides, and the two ends of the support plates are fixed to the upper plate body and the lower plate body respectively by bolts.

[0010] Furthermore, an upper clearance hole is provided on the upper plate body, a bearing is fixed in the lifting frame body, a rotating shaft is rotatably connected to the bearing, the top end of the rotating shaft extends out of the clearance hole, and the grinding disc is fixed to the top of the rotating shaft.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In the utility model, the positioning frame remains fixed, and the lifting frame can be lifted and lowered relative to the positioning frame through the lifting assembly at the bottom. The positioning frame and the lifting frame are slidably connected by a linear guide rail to ensure the stability of the lifting frame during the lifting process, thereby ensuring high-precision lifting of the grinding disc to ensure the final product effect of the grinding and polishing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the framework structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the utility model in the installed state;

[0018] The utility model number information is as follows:

[0019] 1. Lifting frame; 11. Upper plate; 111. Upper clearance hole; 12. Lower plate; 121. Lower clearance hole; 122. Connecting hole; 13. Support plate; 14. Grinding disc; 15. Rotating shaft; 2. Positioning frame; 21. Linear guide rail; 22. Extension rod; 23. Connecting plate; 3. Lifting assembly; 31. Lifting motor; 32. Control screw; 33. Screw nut;

[0020] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides a vertical lifting mechanism for a crystal grinding machine, comprising a lifting frame 1, a positioning frame 2 located inside the lifting frame 1, and a lifting assembly 3. Figure 1 and Figure 2 The lifting frame 1 includes a separated upper plate 11 and a lower plate 12, at least two support plates 13 are fixed between the upper plate 11 and the lower plate 12, and a lower clearance hole 121 is provided on the lower plate 12. A grinding disc 14 is rotatably connected to the upper plate 11, and the vertical distance between the grinding disc 14 and the upper plate 11 is kept fixed; refer to Figure 4 The positioning frame 2 is connected to other panels in the crystal grinding machine to keep its position fixed. The lifting frame 1 can be lifted and lowered relative to the positioning frame 2. The bottom end of the positioning frame 2 is slidably connected to the lower give way hole 121. A plurality of linear guide rails 21 are provided between the positioning frame 2 and the support plate 13. The linear guide rails 21 are composed of guide rails and sliders. Balls or rollers are provided between the guide rails and the sliders to reduce friction. The two are respectively fixed on the positioning frame 2 and the support plate 13 to ensure the movement accuracy of the lifting frame 1 when sliding relative to the positioning frame 2;

[0023] In traditional lifting mechanisms, the frames are fixed in shape and the spacing between them cannot be adjusted. This can cause the linear guide rail to become unusable after installation due to excessive or insufficient installation clearance. In this mechanism, the lifting frame 1 is composed of an upper plate 11, a lower plate 12, and a support plate 13. During installation, the linear guide rail 21 is first installed on the positioning frame 2. The connection position between the support plate 13 and the upper and lower plates is then adjusted to meet the required clearance for the linear guide rail, ensuring that the linear guide rail 21 can be properly installed and used.

[0024] The lifting assembly 3 includes a lifting motor 31 fixed to the bottom end of the positioning frame 2. The lifting motor 31 is provided with a control screw 32, and the control screw 32 is sleeved with a screw nut 33. The screw nut 33 is fixedly connected to the lower plate 12. The lifting frame 1 is driven to move by the screw nut 33, thereby achieving precise control of the lifting and lowering of the grinding wheel 14, comprehensively ensuring that the surface effect of the crystal product after processing is transparent.

[0025] See Figure 1 、 Figure 2The bottom end of the positioning frame 2 is provided with several extension rods 22, and the extension rods 22 can slide up and down in the lower clearance hole 121. The bottom end of the extension rod 22 is provided with a connecting plate 23, and the lifting motor 31 is fixed on the connecting plate 23. The control screw rod 32 connected to the lifting motor 31 passes through the connecting plate 23 and is arranged upward.

[0026] See Figure 2 The lower plate body 12 is provided with a connecting through hole 122, which is preferably located at the center of the lower plate body 12 to balance the force on the lower plate body 12. One end of the screw nut 33 is passed through the connecting through hole 122, and the screw nut 33 is connected and fixed to the lower plate body 12 by a bolt.

[0027] See Figure 2 The support plates 13 are divided into two pieces, and the two support plates 13 are located on opposite sides. The two ends of the support plates 13 are respectively fixed to the upper plate body 11 and the lower plate body 12 by bolts. The bolt connection method can make the support plates 13 and the positioning frame 2 fine-tune the distance during the assembly process, thereby ensuring the close fit of the various components in the linear guide rail 21 and ensuring the stable operation of the device.

[0028] See Figure 1 、 Figure 3 The upper plate 11 is provided with an upper clearance hole 111, which is preferably located at the center of the upper plate 11. A bearing is fixed in the lifting frame 1, and a rotating shaft is rotatably connected to the bearing. The top end of the rotating shaft extends out of the clearance hole 111. The grinding disc 14 is fixed to the top of the rotating shaft 15, and the rotating shaft 15 is connected to an external drive motor to realize the rotation of the grinding disc 14. The lifting and rotation of the grinding disc 14 in the crystal grinding machine are achieved by two different driving components. The improvement of this device is aimed at the lifting mechanism of the grinding disc 14. The rotation structure of the grinding disc 14 can be realized with reference to the existing technology.

[0029] The above description is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention fall within the protection scope of the present invention.

Claims

1. A vertical lifting mechanism for a crystal grinding machine, characterized by: include The lifting frame includes an upper plate and a lower plate, at least two support plates are fixed between the upper plate and the lower plate, a lower clearance hole is provided on the lower plate, and a grinding disc is rotatably connected to the upper plate; A positioning frame is located inside the lifting frame, the positioning frame is kept in a fixed position, the bottom end of the positioning frame is slidably connected to the lower clearance hole, and a plurality of linear guide rails are provided between the positioning frame and the support plate; The lifting assembly includes a lifting motor fixed to the bottom end of the positioning frame, the lifting motor is provided with a control screw rod, the control screw rod is sleeved with a screw nut, and the screw nut is fixedly connected to the lower plate body.

2. The vertical lifting mechanism for a crystal grinding machine according to claim 1, characterized in that: The bottom end of the positioning frame is provided with a plurality of extension rods, the extension rods are slidably connected to the lower yielding holes, the bottom ends of the extension rods are provided with connecting plates, and the lifting motor is fixed on the connecting plates.

3. The vertical lifting mechanism for a crystal grinding machine according to claim 1, characterized in that: The lower plate body is provided with a connecting through hole, and the screw nut is fixed in the connecting through hole.

4. The vertical lifting mechanism for a crystal grinding machine according to claim 1, characterized in that: There are two support plates, and the two support plates are located on opposite sides. The two ends of the support plates are respectively fixed to the upper plate body and the lower plate body by bolts.

5. The vertical lifting mechanism for a crystal grinding machine according to claim 1, characterized in that: An upper clearance hole is provided on the upper plate body, a bearing is fixed in the lifting frame body, a rotating shaft is rotatably connected to the bearing, the top end of the rotating shaft extends out of the clearance hole, and the grinding disc is fixed to the top of the rotating shaft.

Images