CN113043132B

CN113043132B - Polisher applied to magnesium alloy diaphragm

Info

Publication number: CN113043132B
Application number: CN202110350125.7A
Authority: CN
Inventors: 张志雄; 奚廷斐; 万子义
Original assignee: Zhejiang Fengyuan Biotechnology Co ltd
Current assignee: Zhejiang Fengyuan Biotechnology Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2022-07-19
Anticipated expiration: 2041-03-31
Also published as: CN113043132A

Abstract

The invention discloses a grinding machine applied to a magnesium alloy diaphragm, which comprises a transmission mechanism and a grinding mechanism, wherein the transmission mechanism is used for transmitting abrasive paper, and the grinding mechanism is arranged on the transmission mechanism and is in contact with the transmission mechanism. The invention relates to a sander applied to a magnesium alloy diaphragm, which adopts a transmission device to transmit abrasive paper with different meshes so that the magnesium alloy diaphragm meets the requirement of roughness, realizes automatic sanding of the magnesium alloy diaphragm through the design of a grinding tool, and designs the grinding tool so that the grinding tool meets the requirement of sanding thickness.

Description

Polisher applied to magnesium alloy diaphragm

Technical Field

The invention relates to the field of grinders, in particular to a grinder applied to a magnesium alloy membrane.

Background

In the field of medical appliance application in recent years, because magnesium alloy has the advantages of degradability and absorbability, element biosafety, high mechanical strength and the like, a series of magnesium alloy medical appliance products such as fully-degradable magnesium alloy coronary stents, fully-degradable magnesium alloy bone nails and fully-degradable magnesium alloys are developed.

In the research and development and product registration and inspection processes of magnesium alloy medical equipment products, a large amount of samples are consumed for inspection and test. For example, the fully degradable magnesium alloy stent requires more than 2 thousand finished products in the product registration inspection, and the finished high-end magnesium alloy medical instruments can be processed only in a small amount at present. Therefore, people often adopt cheap magnesium alloy abrasive discs as substitute samples to carry out test work. Some magnesium alloy medical appliance products are sheet materials, such as tissue induction diaphragms and meninges restoration patches for dental implants, and magnesium alloy diaphragms for different medical appliances have different specification parameter requirements, such as the thickness of the magnesium alloy diaphragm for replacing a fully-degradable magnesium alloy coronary stent is 0.12-0.8mm, and substances harmful to human bodies cannot be introduced in the process of manufacturing the magnesium alloy diaphragm.

As magnesium alloy medical equipment products are just coming out for more than ten years, no mechanical polishing machine specially designed and manufactured for the characteristics of magnesium alloys of medical equipment exists in the market. At present, the magnesium alloy diaphragm can only be manufactured by manual polishing, the process is time-consuming and labor-consuming, and the requirement of industrial production scale cannot be met. Most of the existing mechanical polishing machine equipment is not universal equipment, some mechanical polishing equipment is not matched in the size of a processed sample, harmful substances to a human body are introduced into the mechanical polishing process, and the roughness requirement cannot be met due to the fact that a grinding tool is fixed. For example, in the fields of CN211639292U and CN211940188U electronic products, polishing liquid and polishing stones are used in the polishing process of a polishing machine for polishing silicon wafers, and substances harmful to human bodies cannot be introduced into medical magnesium alloy membranes. And the thickness and the surface roughness of the finished product of the final grinding sheet of the grinding machines can not meet the use specification of medical instrument products.

Disclosure of Invention

The invention aims to improve the problems that the existing polisher is not suitable for the field of medical instruments due to the fact that the existing polisher is not suitable for the size, the roughness cannot meet the requirement, polishing liquid needs to be added in the polishing process, and the like, and is particularly not suitable for polishing medical magnesium alloy membranes. The invention provides a grinding machine applied to a magnesium alloy diaphragm, which adopts a transmission device to transmit abrasive paper with different meshes so that the magnesium alloy diaphragm meets the requirement of roughness, realizes automatic grinding of the magnesium alloy diaphragm through the design of a grinding tool, and designs the grinding tool so that the grinding tool meets the requirement of grinding thickness.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a be applied to polisher of magnesium alloy diaphragm, includes transport mechanism and grinding machanism, and transport mechanism is used for transmitting abrasive paper, and grinding machanism sets up to install on transport mechanism to contact with transport mechanism.

Further, the grinding mechanism comprises a driving device, a grinding mechanism support and a grinding tool device, the driving device is connected with the grinding tool device and drives the grinding tool device to move, the grinding tool device is installed on the grinding mechanism support, and the grinding mechanism support is fixed on the transmission mechanism.

Further, drive arrangement sets up on transmission device, and drive arrangement includes motor and push rod, and the one end and the grinding apparatus of push rod are connected, and the other end is connected with the motor.

Further, the grinding tool device comprises a cover plate, a pressure rod, a sliding block and a grinding tool; the cover plate is detachably arranged on the polishing mechanism bracket, the upper end of the pressure rod is fixedly connected with the cover plate, and the lower end of the pressure rod is fixedly connected with the sliding block; the grinding tool is connected with the sliding block in a sliding way.

Furthermore, the compression bar comprises an upper compression bar, a lower compression bar, a spring and a bar sleeve, the spring is arranged between the upper compression bar and the lower compression bar, and the bar sleeve is sleeved on the outer sides of the upper compression bar and the lower compression bar.

Furthermore, the sliding block comprises a box body, a roller and a roller bearing, the roller is fixed in the box body through the roller bearing, and the depth of the box body is smaller than the diameter of the roller.

Further, the grinding tool comprises a sliding rail and a grinding tool clamp, wherein the sliding rail is arranged above the grinding tool clamp and is matched with the roller of the sliding block.

Further, the transmission device comprises a transmission bracket, a conveyor belt device and conveyor belt blocking pieces, the conveyor belt device is fixed on the transmission bracket, and the conveyor belt blocking pieces comprise 2 and are respectively arranged on two sides of the conveyor belt device; the conveying belt blocking piece is provided with a groove, and the conveying belt moves in the groove.

Further, a rubber wheel is arranged in a groove of the conveyor belt blocking piece.

Further, still include loading attachment, loading attachment sets up the material loading end at transmission device.

Technical effects

According to the sander applied to the magnesium alloy diaphragm, the compression bar with the spring structure and the sand paper with different meshes are transmitted by the transmission mechanism, so that sanding can be completed without adding other substances in the sanding process of the magnesium alloy diaphragm, the requirement on the roughness of the magnesium alloy diaphragm is met, the sander is simple and practical in structure, manual sanding is replaced by mechanical sanding, and the efficiency is improved.

Drawings

FIG. 1 is a schematic perspective view of a grinder applied to a magnesium alloy diaphragm according to the present invention;

FIG. 2 is a side view of a grinder applied to a magnesium alloy diaphragm according to the present invention;

FIG. 3 is a schematic view of a pressing rod and a grinding tool of a grinder applied to a magnesium alloy diaphragm according to the present invention;

FIG. 4 is a schematic view of a pressing rod of the grinding machine applied to the magnesium alloy membrane of the present invention;

FIG. 5 is a cross-sectional view of a pressing rod of the grinder applied to the magnesium alloy diaphragm according to the present invention;

in the figure: 1-transmission mechanism, 2-grinding mechanism, 2A-grinding tool device, 2B-driving device, 21-cover plate, 22-pressure rod, 23-slide block, 24-grinding tool, 25-driving device, 26-grinding mechanism bracket, 221-upper pressure rod, 222-lower pressure rod, 223-rod sleeve, 224-spring, 225-shallow groove, 226-protrusion and 241-sliding rail.

Detailed Description

The invention will be further described with reference to the accompanying drawings, which will serve to assist the public in understanding the invention, and the following description of the embodiments is not intended to limit the invention to the specific embodiments given by the applicant, and any changes in the definition of parts or features, or in the form of an overall structure, rather than essential changes, may be made to the invention as defined in the claims.

Examples

As shown in fig. 1, the embodiment of the present invention provides a grinder applied to a magnesium alloy diaphragm, including a conveying mechanism 1 and a grinding mechanism 2, where the conveying mechanism 1 is used for conveying sand paper, and the grinding mechanism 2 is configured to be mounted on the conveying mechanism 1 and to contact with the conveying mechanism 1.

Specifically, as shown in fig. 2, the grinding mechanism 2 includes a driving device 2B, a grinding mechanism support 26 and a grinding tool device 2A, the driving device 2B is connected to the grinding tool device 2A and drives the grinding tool device 2A to move, the grinding tool device 2A is mounted on the grinding mechanism support 26, and the grinding mechanism support 26 is fixed on the transmission mechanism 1. The driving device 2B is arranged on the transmission mechanism 1, the driving device is an electric push rod, and comprises a motor and a push rod, one end of the push rod is connected with the grinding tool, the other end of the push rod is connected with the motor, the push rod in the embodiment is a reciprocating push rod, and the push rod performs front-back pushing motion (namely reciprocating motion) at a certain frequency under the action of the motor.

As shown in fig. 2 and 3, the grinder device includes a cover plate 21, a pressing rod 22, a slider 23, and a grinder 24; the cover plate 21 is detachably arranged on the grinding mechanism support, the upper end of the pressure rod is fixedly connected with the cover plate, and the lower end of the pressure rod 22 is fixedly connected with the sliding block 23; the grinding tool 24 is slidably connected to the slide 23. As shown in fig. 4 and 5, the pressing rod includes an upper pressing rod 221, a lower pressing rod 222, a spring 224 and a rod sleeve 223, the spring 224 is disposed between the upper pressing rod 221 and the lower pressing rod 222, and the rod sleeve 223 is sleeved outside the upper pressing rod 221 and the lower pressing rod 222. In this embodiment, as shown in fig. 1 and 2, the bracket of the grinding mechanism 26 includes 4 bracket rods, the bracket is fixed on the transmission device, 4 corners of the cover plate 21 are installed on the 4 bracket rods in a snap-fit manner, and when the magnesium alloy membrane is replaced, the cover plate is detached from the bracket rods. When the grinding tool device is installed on the grinding support, the lower end of the grinding tool device is in contact with the transmission mechanism.

In this embodiment, as shown in fig. 4 and 5, a shallow groove 225 is formed on the surface of the upper pressing rod 221 and the lower pressing rod 222, a protrusion 226 is formed inside each end of the sleeve, and the protrusion 226 of the sleeve is matched with the shallow groove 225 on the upper pressing rod and the lower pressing rod for fixedly connecting the sleeve 223 with the upper pressing rod 221 and the lower pressing rod 222. Wherein, the width of the shallow groove 225 of the upper pressure lever 221 is larger than the width of the protrusion 226 of the lever sleeve 223, so that the lever sleeve can move along with the extension and contraction of the spring. Preferably, the width of the shallow groove of the upper pressure lever is 10 mm.

In another embodiment of the invention, the rod sleeve is provided with a telescopic part, two ends of the rod sleeve are fixedly connected with the upper pressure rod and the lower pressure rod, preferably welded, and the telescopic part of the rod sleeve is telescopic along with the expansion of the spring.

The sliding block comprises a box body, a roller and a roller bearing, the roller is fixed in the box body through the roller bearing, and the depth of the box body is smaller than the diameter of the roller. The box body is fixedly connected with the lower pressing rod, and preferably welded. The number and the arrangement of gyro wheel design according to the size of box body, in this embodiment, the gyro wheel in the box body sets up to the guide rail gyro wheel, sets up to 6 rows, and every row is 3, is equipped with 18 gyro wheels altogether.

As shown in fig. 3, the grinder 24 includes a slide rail 241 and a grinder holder, and the slide rail 241 is disposed above the grinder holder to be engaged with the roller of the slider. Specifically, the grinding apparatus in this embodiment is the cube, and the slide rail is seted up to the upper surface, and the length of slide rail is no longer than the length of grinding apparatus, and the lower surface is equipped with depressed part, and as placing the container of waiting the magnesium alloy diaphragm of polishing, be equipped with one kind in circular, square, rectangle or the dysmorphism in the depressed part, the degree of depth of depressed part sets up to the thickness after the magnesium alloy diaphragm need polish: 0.1mm-1mm, preferably one of 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1 mm. The grinding apparatus is designed into a plurality of according to actual demands, and is replaced according to demands during use.

The conveying device comprises a conveying support, a conveying belt device and conveying belt blocking pieces, wherein the conveying belt device is fixed on the conveying support, and the conveying belt blocking pieces comprise 2 and are respectively arranged on two sides of a conveying belt of the conveying belt device; one end of a push rod of the driving device penetrates through and is connected with the grinding tool. The conveying belt blocking piece is provided with a groove, and the conveying belt moves in the groove. In this embodiment, the conveyer belt device is traditional conveyer belt form, and the transmission support is used for fixed conveyer belt device, and there is a supporting panel the below of conveyer belt, and the conveyer belt separation blade can guarantee that abrasive paper does not deviate when the conveyer belt is transmitted, and abrasive paper can guarantee not to deviate when especially grinding apparatus horizontal slip, and the recess height of conveyer belt separation blade is a little higher than conveyer belt and the superimposed thickness of abrasive paper to guarantee that abrasive paper can transmit on the conveyer belt.

In another embodiment of the invention, the groove of the conveyor belt blocking piece is relatively high, the rubber wheel is arranged in the groove, the rubber wheel is rotatably connected with the groove of the conveyor belt blocking piece, a certain pressure is applied between the rubber wheel and the conveyor belt, the rubber wheel rotates anticlockwise when the conveyor belt is conveyed forwards, and when abrasive paper is arranged between the rubber wheel and the conveyor belt, the abrasive paper is ensured to move forwards along with the conveyor belt under the action of the rubber wheel.

In another embodiment of the present invention, the apparatus further comprises a feeding device, and the feeding device is disposed at the feeding end of the conveying device. The feeding device is used for automatically conveying the abrasive paper to the conveying belt.

The use principle of the grinding machine applied to the magnesium alloy membrane of the invention is explained as follows:

the magnesium alloy diaphragm is usually applied to tissue induction diaphragms, meninges restoration patches and the like for dental implants, so that the polishing of the magnesium alloy diaphragm needs to meet two conditions: 1. the roughness meets the requirement; 2. foreign matters such as polishing liquid, polishing oil and the like cannot be added in the polishing process. In this example, the thickness of the magnesium alloy membrane to be polished is 2mm, and the magnesium alloy membrane needs to be polished into a magnesium alloy sheet with the thickness of 0.5mm and the roughness of 0.02 μm. Before the magnesium alloy membrane polisher is used, a cover plate of a grinding tool device is detached from 4 support rods of a polishing mechanism support, a grinding tool with the grinding tool depth of 1mm is installed, a magnesium alloy membrane needing polishing is installed in the grinding tool, then the grinding tool device is installed on the support rods, the cover plate and the support rods are stably installed, and at the moment, due to the action of a spring in a pressure rod, the magnesium alloy membrane in the grinding tool is in contact with a conveying belt and has downward pressure. Before polishing, the polishing machine of the embodiment is powered on, sand paper is placed on the conveying belt before the conveying belt conveys the sand paper (the grinding tool can be lifted upwards slightly manually), and the sand paper can also be laid before the grinding tool is installed. The mesh number of sand paper in this example is: 220, 280, 320, 400, 500, 600, 800, 1000, 1200, 1500 and 2000, which are sequentially arranged from small to large, 3-5 pieces of abrasive paper with each mesh number are respectively arranged, a conveyor belt and a push rod are started, the conveyor belt drives the abrasive paper to move forwards, an electric push rod drives a grinding tool to move left and right for grinding until the magnesium alloy membrane needing grinding is ground to be level with the grinding tool, then the conveyor belt and the electric push rod are turned off, the grinding tool device is taken down, and finally the magnesium alloy membrane in the grinding tool is taken down. And then installing a die with the depth of a grinding tool being 0.5mm, turning over and placing the polished magnesium alloy diaphragm, placing the non-polished surface outwards, and repeating the above actions, wherein the number of the sand paper placed is 220, 280, 320, 400, 500, 600, 800, 1000, 1200, 1500 and 2000, placing the sand paper from small to large in sequence, and 1-3 pieces of sand paper are placed in sequence until the magnesium alloy diaphragm to be polished is polished to be flush with the grinding tool, so that double-surface polishing is completed.

The polisher of being applied to magnesium alloy diaphragm of this embodiment utilizes driven abrasive paper, depression bar inner spring decurrent pressure and electric putter's push-and-pull power for magnesium alloy diaphragm only polishes once at the same position of abrasive paper, and the ash of polishing down need not to add the external use thing at the in-process of polishing along with the abrasive paper transmission, and abrasive paper from thick to thin transmission, makes the magnesium alloy abrasive disc carry out the coarse polishing earlier and then to meticulous polishing, improves the efficiency of polishing, reaches the roughness requirement. The polisher applied to the magnesium alloy membrane of the embodiment can replace manual polishing, avoids the problems that an external polishing substance needs to be added to an existing polisher, and the polishing thickness, the polishing roughness and the like cannot be achieved, and is suitable for polishing of the magnesium alloy membrane for medical use.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that all such changes and modifications as fall within the true spirit and scope of the invention be considered as within the following claims.

Claims

1. A grinding machine applied to a magnesium alloy membrane is characterized in that,

the sanding machine comprises a transmission mechanism and a sanding mechanism, wherein the transmission mechanism is used for transmitting abrasive paper, and the sanding mechanism is arranged on the transmission mechanism and is in contact with the transmission mechanism;

the conveying mechanism comprises a conveying support, a conveying belt device and conveying belt blocking pieces, the conveying belt device is fixed on the conveying support, and the conveying belt blocking pieces comprise 2 conveying belt blocking pieces which are respectively arranged on two sides of a conveying belt of the conveying belt device; the conveying belt blocking piece is provided with a groove, and the conveying belt moves in the groove; a rubber wheel is arranged in the groove of the conveyor belt blocking piece, the rubber wheel is rotationally connected with the groove of the conveyor belt blocking piece, and a certain pressure is formed between the rubber wheel and the conveyor belt;

the grinding mechanism comprises a driving device, a grinding mechanism support and a grinding tool device, the driving device is connected with the grinding tool device and drives the grinding tool device to move, the grinding tool device is installed on the grinding mechanism support, and the grinding mechanism support is fixed on the transmission mechanism; the driving device is arranged on the transmission mechanism and comprises a motor and a push rod, one end of the push rod is connected with the grinding tool, and the other end of the push rod is connected with the motor;

the grinding tool device comprises a cover plate, a pressing rod, a sliding block and a grinding tool; the cover plate is detachably arranged on the grinding mechanism bracket, the upper end of the pressure lever is fixedly connected with the cover plate, and the lower end of the pressure lever is fixedly connected with the sliding block; the grinding tool is connected with the sliding block in a sliding manner;

the compression bar comprises an upper compression bar, a lower compression bar, a spring and a bar sleeve, the spring is arranged between the upper compression bar and the lower compression bar, the bar sleeve is sleeved on the outer sides of the upper compression bar and the lower compression bar, the sliding block comprises a box body, a roller and a roller bearing, the roller is fixed in the box body through the roller bearing, the depth of the box body is smaller than the diameter of the roller, the grinding tool comprises a sliding rail and a grinding tool clamp, and the sliding rail is arranged above the grinding tool clamp and matched with the roller of the sliding block; the feeding device is arranged at the feeding end of the conveying device.