Non-contact constant-pressure grinding mechanism

Abstract

The utility model discloses a non-contact type constant pressure grinding mechanism which comprises a positioning base and a plurality of rows of mounting holes formed in the positioning base in an array mode, each mounting hole is internally provided with a cyclone clamping body, the positioning base is provided with an air inlet pipeline communicated with the corresponding mounting hole, the air inlet pipeline is used for circulating compressed air, and the air inlet pipeline is communicated with the corresponding mounting hole. A porous membrane attached to the cyclone clamping body is fixed to the positioning base, an air film layer is formed above the porous membrane after the air inlet pipeline is ventilated, and an inlet of the air inlet pipeline is connected with an adjusting valve; the mounting frame is mounted above the positioning base, a lifting rotating motor is mounted on the mounting frame, and a sponge flexible wheel is mounted on a rotating shaft of the lifting rotating motor; the problem that fragile products of thin-wall structures are prone to being damaged or damaged or scratched in the polishing and grinding process after being clamped and positioned is solved.

Description

Technical Field

[0001] This utility model relates to the field of polishing and grinding technology for fragile items, and in particular to a non-contact constant pressure grinding mechanism. Background Technology

[0002] Fragile products such as ceramics, optical glass, and electronic components require polishing and grinding in the final process. This is typically done using polishing and grinding equipment. The equipment uses clamping fixtures to hold and position the fragile products, and polishing wheels achieve surface grinding and polishing. During both the clamping and polishing processes, forces are applied to the fragile products, which can lead to pinching, damage, scratches, etc. This is especially true for thin-walled fragile products, where it is difficult to achieve a clamping method that is both protective and meets positioning requirements during polishing and grinding. Utility Model Content

[0003] (I) Technical Issues

[0004] The purpose of this invention is to provide a non-contact constant pressure grinding mechanism to solve the problem that in the prior art, fragile products with thin walls are easily clamped, damaged or scratched during polishing and grinding.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A non-contact constant pressure grinding mechanism includes a positioning base and multiple rows of mounting holes arrayed on the positioning base. Each mounting hole houses a cyclone clamping body. The positioning base has an air inlet pipe connecting each mounting hole for circulating compressed air. A porous diaphragm is fixed to the positioning base and adheres to the cyclone clamping body. After air is introduced through the air inlet pipe, an air film layer is formed above the porous diaphragm. An adjusting valve is connected to the inlet of the air inlet pipe. The mechanism also includes a mounting frame mounted on the positioning base, on which a lifting and rotating motor is mounted. A flexible sponge wheel is mounted on the shaft of the lifting and rotating motor.

[0008] Preferably, the cyclone clamping body includes a bushing sealed and installed in the mounting hole, the bushing having a stepped hole communicating with the mounting hole, an air compressor core rotatably installed in the stepped hole, the air compressor core having an annular groove, and a flow hole communicating with the bottom of the stepped hole and the annular groove; the air compressor core having a guide head with a diameter larger than the large hole diameter of the stepped hole, and the bushing having a conical surface inclined toward one side of the stepped hole.

[0009] Preferably, the flow hole includes a guide hole coaxial with the stepped hole and a plurality of diffuser holes penetrating the annular groove; the plurality of diffuser holes are arranged spirally along the circumference of the air core.

[0010] Preferably, the conical surface includes a first air guide surface and a second air guide surface with different tapers, and there is a transition connection structure between the first air guide surface and the second air guide surface. The taper of the first air guide surface is greater than the taper of the second air guide surface, and the first air guide surface extends to the bottom of the air guide head.

[0011] Preferably, the end of the air guide head near the first air guide surface is provided with an air guide slope.

[0012] Preferably, the positioning base has a raised ring portion that protrudes upward from the opening edge of the mounting hole.

[0013] Preferably, the positioning base is provided with a mounting groove for fixing the porous diaphragm, and the porous diaphragm is attached to the upper surface of the convex ring.

[0014] Preferably, the positioning base has multiple assembly holes in the middle.

[0015] Preferably, the thickness of the air film layer formed above the porous membrane ranges from 0.05 mm to 0.2 mm.

[0016] (III) Beneficial Effects

[0017] By setting an installation hole in the positioning base to connect to the air intake pipe, and installing a cyclone clamping body in the installation hole, a porous diaphragm is attached to the cyclone clamping body for air guidance. After the compressed air passes through the cyclone clamping body, it forms an air film layer above the porous diaphragm, thereby achieving air suspension clamping of fragile products. The adsorption pressure can be adjusted by adjusting the opening of the valve. After clamping, a lifting and rotating motor drives a flexible sponge wheel to move and rotate toward the fragile product, thereby polishing and grinding the fragile product. The fragile product is positioned at the air film layer, and there is no additional clamping structure to cause pinching, damage or scratches to the fragile product. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the adsorption positioning mechanism in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the adsorption positioning mechanism for disassembling the porous membrane in an embodiment of this utility model;

[0021] Figure 4This is a cross-sectional view of the adsorption positioning mechanism in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the positioning base in an embodiment of the present invention;

[0023] Figure 6 This is a cross-sectional view of the cyclone clamping body in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the bushing structure in an embodiment of the present utility model;

[0025] Figure 8 This is a schematic diagram of the air core structure in an embodiment of this utility model;

[0026] exist Figures 1 to 8 In the diagram, the correspondence between component names or lines and the drawing numbers is as follows:

[0027] Positioning base 1, mounting hole 2, cyclone clamping body 3, bushing 31, stepped hole 32, air core 33, annular groove 34, guide hole 35, diffuser hole 36, annular groove 37, conical surface 38, first air guide surface 381, second air guide surface 382, ​​air guide head 39, air guide slope 390, convex ring 310, air inlet pipe 4, porous diaphragm 5, mounting groove 6, assembly hole 7, mounting bracket 8, lifting rotary motor 9, sponge flexible wheel 10. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] See Figures 1-8As shown in the embodiment of this utility model, a non-contact constant pressure grinding mechanism is proposed, including an adsorption positioning mechanism. The adsorption positioning mechanism includes a positioning base 1 and multiple rows of mounting holes 2 arrayed on the positioning base 1. Each mounting hole 2 is equipped with a cyclone clamping body 3. The positioning base 1 is provided with an air inlet pipe 4 connecting each mounting hole 2. The air inlet pipe 4 is used to circulate compressed air. A porous diaphragm 5 is fixed on the positioning base 1 and attached to the cyclone clamping body 3. After the air inlet pipe 4 is vented, an air film layer is formed above the porous diaphragm 5. An adjustment valve is connected to the inlet of the air inlet pipe 4. After the compressed air flows through the cyclone clamping body 3, an air film layer is formed above the porous diaphragm 5. The adsorption force of the air film layer is used to reliably position fragile products. The adsorption force can be adjusted by the adjustment valve to adapt to fragile products of different sizes and shapes. Generally, by controlling the flow rate of compressed air, the thickness of the air film layer formed above the porous diaphragm 5 can vary from 0.05mm to 0.2mm. This ensures that when fragile products are adsorbed and pressed, there is at least a 0.05mm air suspension gap and at most a 0.2mm air suspension gap between the product and the porous diaphragm 5, effectively avoiding the risk of damage caused by contact clamping.

[0030] Meanwhile, a porous diaphragm 5 is fixed on the positioning base 1 and attached to the cyclone clamping body 3. The air flowing out of the cyclone clamping body 3 is guided through the holes in the porous diaphragm 5 and a more uniform air film layer is formed.

[0031] It also includes a mounting bracket 8 installed above the positioning base 1. A lifting and rotating motor 9 is mounted on the mounting bracket 8. The lifting and rotating motor 9 can be a mature product and is controlled by a PLC control box in the polishing and grinding equipment along with an adjusting valve. A flexible sponge wheel 10 is mounted on the shaft of the lifting and rotating motor 9. The mounting bracket 8 and the positioning base 1 are integrated into the polishing and grinding equipment and are relatively fixed. After the fragile product is stably clamped, the lifting and rotating motor 9 drives the flexible sponge wheel 10 to move and rotate towards the fragile product, thereby performing polishing and grinding. The fragile product forms a stable support at the air film layer, eliminating the need for external clamping structures and avoiding pinching, damage, or scratches to the fragile product. This improves the yield rate of the polishing and grinding process, especially for thin-walled fragile products, as improved yield rates can reduce manufacturing costs.

[0032] Specifically, the cyclone clamping body 3 includes a bushing 31 sealed and installed in the mounting hole 2. The bushing 31 has a stepped hole 32 that communicates with the mounting hole 2. An air compressor core 33 is rotatably installed in the stepped hole 32. When the air compressor core 33 is rotatably connected, the bottom contact part remains sealed. At the same time, an annular groove 3734 is provided in the air compressor core 33. A flow hole is provided in the air compressor core 33 that communicates with the bottom of the stepped hole 32 and the annular groove 3734. The flow hole is used to guide the compressed air entering the bushing 31 into the air compressor core 33 and then into the annular groove 3734. Thus, the compressed air drives the air compressor core 33 to rotate relative to the bushing 31, while the compressed air also flows outward from the annular groove 3734 in the direction of rotation.

[0033] Meanwhile, the air core 33 is provided with a guide head 39 with a diameter larger than that of the stepped hole 32. The bushing 31 is provided with a conical surface 38 inclined towards the side of the stepped hole 32. A gap is formed between the guide head 39 and the conical surface 38, thereby increasing the flow velocity of the compressed air passing through the gap. The conical surface 38 is used to guide the direction of the compressed air. Therefore, after the compressed air flows towards the conical surface 38 in a rotating direction, under the guidance of the conical surface 38, part of the compressed air flows back towards the guide head 39, forming a cyclone flow with wind pressure applied towards the guide head 39. The cyclone flow is used to achieve air suspension adsorption of fragile products with thin-walled structures.

[0034] Specifically, in order to ensure that the compressed air passing through the flow hole can drive the air compressor core 33 to rotate, the flow hole includes a guide hole 35 coaxial with the stepped hole 32 and multiple diffuser holes 36 penetrating the annular groove 3734. The multiple diffuser holes 36 are arranged spirally along the circumference of the air compressor core 33, thereby enabling the compressed air to be split after passing through the guide hole 35 and flow into the annular groove 3734 through the spirally arranged diffuser holes 36. Under the action of airflow, the air compressor core 33 is driven to rotate relative to the bushing 31, and the compressed air flowing into the annular groove 3734 flows in the direction of rotation.

[0035] The cone surface 38 is used to guide the rotating flow of compressed air so that part of the compressed air forms a cyclone flow and flows toward the guide vane 39 to ensure the formation of an air film layer. Specifically, the conical surface 38 includes a first air guide surface 381 and a second air guide surface 382 with different tapers. The first air guide surface 381 and the second air guide surface 382 have a transition connection structure, which is rounded to avoid resistance when compressed air flows through. The taper of the first air guide surface 381 is greater than that of the second air guide surface 382. The first air guide surface 381 extends to below the air guide head 39. The compressed air flowing out from the annular groove 3734 with a rotational direction flows to the first air guide surface 381 and the second air guide surface 382 respectively. The compressed air passing through the second air guide surface 382 has a larger return angle, while the compressed air passing through the first air guide surface 381 accelerates and pushes the upper compressed air, thereby increasing the speed of the cyclone flow and maintaining the stable air film layer that has been formed. The adsorption pressure is formed by the combined action of the compressed air blowing from below and the compressed air swirling above on the fragile product, ultimately achieving a stable air suspension state.

[0036] Meanwhile, a guide slope 390 is provided at the end of the air guide head 39 near the first air guide surface 381. A gap is formed between the guide slope 390 and the first air guide surface 381 to accelerate the flow of compressed air. The guide slope 390 can reduce the wind resistance formed at the end of the air guide head 39 during the flow of compressed air.

[0037] Specifically, the positioning base 1 has a raised ring 310 that protrudes upward from the edge of the opening of the mounting hole 2. The raised ring 310 is used to fit and position the porous membrane 5. At the same time, in order to stably install the porous membrane 5 and to ensure that the air film layer is above the porous membrane 5 so that it is not interfered with by the positioning base 1 when adsorbing fragile products, the positioning base 1 has a mounting groove 6 for fixing the porous membrane 5. The porous membrane 5 is attached to the upper surface of the raised ring 310. Thus, the porous membrane 5 is installed and attached to the raised ring 310 through the mounting groove 6, so that the upper surface of the porous membrane 5 is flush with the positioning base 1, and the air film layer formed at the raised ring 310 is located above the entire upper surface of the positioning base 1.

[0038] Specifically, in order to facilitate the fixed installation of the positioning base 1 in the polishing and grinding equipment, a plurality of mounting holes 7 are provided in the middle of the positioning base 1, and the positioning base 1 is fixedly installed through the mounting holes 7.

[0039] If not all cyclone clamping bodies 3 need to be used on the positioning base 1, the air intake pipes 4 entering the MiG mounting holes 2 can be independently controlled inside the positioning base 1, and a shut-off valve can be integrated for on / off control. It should also be noted that the maximum size of the clamped fragile product is less than the maximum size of the convex ring 310 + 10mm.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. 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. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A non-contact constant pressure grinding mechanism, characterized in that: The device includes a positioning base and multiple rows of mounting holes arrayed on the positioning base. Each mounting hole contains a cyclone clamping body. The positioning base has an air inlet pipe that connects to each mounting hole. The air inlet pipe is used to circulate compressed air. A porous diaphragm is fixed on the positioning base and attached to the cyclone clamping body. After the air inlet pipe is circulated, an air film layer is formed above the porous diaphragm. An adjustment valve is connected to the inlet of the air inlet pipe. It also includes a mounting bracket installed above the positioning base, on which a lifting and rotating motor is mounted, and on the shaft of the lifting and rotating motor are flexible sponge wheels.

2. The non-contact constant pressure grinding mechanism according to claim 1, characterized in that: The cyclone clamping body includes a bushing sealed and installed in the mounting hole. The bushing has a stepped hole that communicates with the mounting hole. An air compressor core is rotatably installed in the stepped hole. The air compressor core has an annular groove and a flow hole that communicates with the bottom of the stepped hole and the annular groove. The air compressor core is provided with a guide head with a diameter larger than that of the stepped hole, and the bushing is provided with a conical surface inclined toward one side of the stepped hole.

3. The non-contact constant pressure grinding mechanism according to claim 2, characterized in that: The flow hole includes a guide hole coaxial with the stepped hole and a plurality of diffuser holes penetrating the annular groove. Multiple diffuser holes are arranged in a spiral along the circumference of the air compressor core.

4. The non-contact constant pressure grinding mechanism according to claim 3, characterized in that: The conical surface includes a first air guide surface and a second air guide surface with different tapers. There is a transition connection structure between the first air guide surface and the second air guide surface. The taper of the first air guide surface is greater than the taper of the second air guide surface. The first air guide surface extends to the bottom of the air guide head.

5. The non-contact constant pressure grinding mechanism according to claim 4, characterized in that: The end of the air guide head near the first air guide surface is provided with an air guide slope.

6. The non-contact constant pressure grinding mechanism according to claim 5, characterized in that: The positioning base is provided with a raised ring that protrudes upward from the edge of the opening of the mounting hole.

7. The non-contact constant pressure grinding mechanism according to claim 6, characterized in that: The positioning base is provided with a mounting groove for fixing the porous diaphragm, and the porous diaphragm is attached to the upper surface of the convex ring.

8. A non-contact constant pressure grinding mechanism according to claim 7, characterized in that: The positioning base has multiple assembly holes in the middle.

9. A non-contact constant pressure grinding mechanism according to claim 8, characterized in that: The thickness of the air film layer formed above the porous membrane ranges from 0.05 mm to 0.2 mm.

Images