Polishing device for plastic product production

Abstract

The invention relates to the technical field of grinding machines, and discloses a grinding device for plastic product production, which comprises a grinding chamber, a centering clamp is arranged at the lower part of the grinding chamber, and a dust blowing device is mounted at the top of the grinding chamber; the grinding chamber comprises a top plate, a surrounding cylinder and a carrying table which are sequentially arranged from top to bottom. The surrounding cylinder is slidably installed at the lower end of the top plate. The centering clamp comprises at least four fixing seats which are distributed in a circular shape, a guide plate is fixed to the other end of each fixing seat, a downwards-inclined slope is arranged on the side, close to the corresponding fixing seat, of the upper surface of each guide plate, and the slopes are connected with the upper surfaces of the fixing seats. The dust blowing device comprises a fan; the size of the horizontal sectional area of the shroud is set to be in negative correlation with the horizontal component of the moving stroke of the shroud on the inclined plane; the air flow at the outlet of the fan is set to be in negative correlation with the horizontal component of the moving stroke of the shroud on the inclined surface; the dust removal device has the advantages that the size of the closed operation space adapts to the sizes of plastic products, and the dust removal effect is good when the plastic products of different sizes are ground.

Description

Technical Field

[0001] The invention relates to the technical field of grinders, in particular to a grinding device for producing plastic products. Background Art

[0002] When using a grinder with a closed grinding working space to grind plastic products, the dust cleaning methods can be divided into cleaning after grinding and cleaning during grinding. Cleaning after grinding means cleaning the entire grinding space after grinding, which has the advantages of flexible cleaning time and easy to ensure cleaning. Cleaning during grinding means using the grinding machine's own cleaning equipment to perform suction cleaning of the generated dust in real time during the grinding process, such as a plastic grinding device for plastic product processing disclosed in Chinese Patent Publication No. 202011357195.7, or a grinding device with a dust absorption mechanism disclosed in Chinese Patent Publication No. 202322878879.7.

[0003] Although the closed grinding work space limits the maximum dispersion range of dust, when it comes to plastic products of different diameters, the actual dispersion areas of dust are not completely consistent, and the suction forces applied to the dust are also inconsistent. That is, the larger the plastic product, the closer the dispersion area of ​​the dust generated by grinding is to the air inlet of the closed grinding work space, and the dust is more easily carried away by the airflow formed by suction. Conversely, the smaller the plastic product, the farther the dispersion area of ​​the dust generated by grinding is from the air inlet of the closed grinding work space, and the dust is less likely to be carried away by the airflow formed by suction. This means that the existing suction cleaning method still has room for improvement when it comes to cleaning dust generated during the grinding process of plastic products of different diameters. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a polishing device for the production of plastic products, which has the advantages of adapting the size of the closed working space to the size of the plastic product and having a good dust removal effect when polishing plastic products of different sizes, and can effectively solve the problems raised in the background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: A polishing device for producing plastic products, used for polishing the end face and circular edge of a disc-shaped plastic product, comprising a polishing chamber, a centering fixture is provided at the lower part of the polishing chamber, and a dust blowing device is installed at the top of the polishing chamber;

[0006] The grinding chamber includes a top plate, a shroud and a platform which are arranged in sequence from top to bottom, and the shroud is slidably mounted at the lower end of the top plate; the centering fixture includes at least four fixed seats which are distributed in a circular shape, one end of each fixed seat is inserted into the platform, and the other end of each fixed seat is fixed with a guide plate, and a side of the upper surface of the guide plate close to the fixed seat is provided with a downwardly inclined inclined surface, and the inclined surface is connected to the upper surface of the fixed seat; the dust blowing device includes a fan, and the fan is arranged to send a dust removal airflow moving from top to bottom into the shroud;

[0007] The enclosure includes multiple enclosures and multiple telescopic plates, which are alternately distributed and together form a vertical columnar space; multiple inclined surfaces are grouped in pairs, and each group of inclined surfaces corresponds to the lower surface of a enclosure; when the enclosure moves downward along the inclined surface, the horizontal cross-sectional area of ​​the columnar space gradually decreases.

[0008] Preferably, the enclosure plate and the telescopic plate are both slidably arranged on the lower surface of the top plate; the lower surface of the telescopic plate and the lower surface of the enclosure plate are flush.

[0009] Preferably, it also includes an auxiliary mechanism and a sliding rheostat, the auxiliary mechanism is configured to make the telescopic plate and the moving contacts of the sliding rheostat move with the movement of the enclosure, and the sliding rheostat cooperates with the fan.

[0010] Preferably, a clamping rod is fixed to the upper surface of each fixing seat, and the plurality of clamping rods cooperate to center the disc-shaped plastic product on the upper surface of the carrier; the top of the clamping rod shrinks inwards to form a frustum.

[0011] Preferably, a grinder is provided in the grinding chamber, the grinder comprises a grinding wheel and a wheel cover, the grinding wheel is configured to be able to grind along the circumference of the rotating plastic product, and the wheel cover is C-shaped.

[0012] Preferably, the wheel cover is arranged to push the clamping rod away from the disc-shaped plastic product before the grinding wheel grinds the outer surface of the disc-shaped plastic product which is in contact with the clamping rod.

[0013] Preferably, it also includes multiple translation mechanisms, which are connected to multiple fixed seats one by one; the translation mechanism includes a slide, a slider and a driver, the output end of the driver is connected to one end of the slide, the other end of the slide is connected and fixed with a baffle, and the fixed seat is installed on the slide through the slider.

[0014] Preferably, the slider is slidably mounted on the upper surface of the slide, a slide rod is fixed to one end of the slider, the slide rod passes through the baffle, and a spring is sleeved on the surface of the slide rod between the baffle and the slider.

[0015] Preferably, a negative pressure suction cup is embedded in the carrier for fixing the disc-shaped plastic product above the carrier.

[0016] Compared with the prior art, the present invention provides a polishing device for producing plastic products, which has the following beneficial effects:

[0017] 1. The disc-shaped plastic product to be polished is centered and positioned above the carrier through multiple clamping rods, and the guide plate is moved with the clamping rods. The lower surface of the surrounding cylinder is set to detachably abut the inclined surface, the upper surface of the fixed seat and the upper surface of the carrier, and the size of the horizontal cross-sectional area of ​​the surrounding cylinder is set to be negatively correlated with the horizontal component of the moving stroke of the surrounding cylinder on the inclined surface, so that the horizontal cross-sectional area of ​​the columnar space enclosed by the surrounding cylinder is reduced as the diameter of the disc-shaped plastic product is reduced. Therefore, when polishing disc-shaped plastic products of different diameters, the dust dispersion area is close to the dust filter box, which facilitates the dust filter box to collect dust.

[0018] 2. Blow dust-blowing airflow into the columnar space through the fan, and blow the dust into the dust filter box. Utilize the dust-blowing airflow from top to bottom, and set the columnar space to change with the diameter of the disc-shaped plastic product, so as to exert a downward force on the disc-shaped plastic product, thereby ensuring the stability of the disc-shaped plastic product during the grinding process. At the same time, the airflow can pass through every corner of the lower cavity of the columnar space, thereby improving the dust-blowing effect.

[0019] 3. By setting the air flow at the fan outlet to be negatively correlated with the horizontal component of the moving stroke of the enclosure on the inclined plane, it is ensured that the grinding of disc-shaped plastic products with different diameters has a good dust removal effect.

[0020] 4. By setting up auxiliary mechanisms, the air flow at the fan outlet and the size of the horizontal cross-sectional area of ​​the surrounding tube change with the change of the diameter of the disc-shaped plastic product, which has a linkage effect and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 It is a structural diagram of the shroud and auxiliary mechanism;

[0024] Figure 4 It is a schematic diagram of the coordination between the auxiliary mechanism and the surrounding tube;

[0025] Figure 5 It is a schematic diagram of the coordination between the dust blowing device and the auxiliary mechanism;

[0026] Figure 6 It is a schematic diagram of the coordination of the carrier, the centering fixture and the translation mechanism;

[0027] Figure 7 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0028] Figure 8 It is a bottom view structural schematic diagram of the present invention.

[0029] Among them: 1. Elevator 1; 2. Grinding room; 3. Grinding machine; 4. Centering fixture; 5. Dust blowing device; 6. Auxiliary mechanism; 7. Translation mechanism; 8. Dust filter box; 21. Top plate; 22. Containing cylinder; 221. Containing plate; 222. Telescopic plate; 23. Carrier; 231. Notch; 232. Closing plate; 24. Negative pressure suction cup; 241. Elevator 2; 31. Grinding wheel; 32. Wheel cover; 3 3. Grinding motor; 34. Robotic arm; 41. Fixed seat; 42. Clamping rod; 43. Guide plate; 431. Inclined surface; 51. Fan; 52. Sliding rheostat; 61. Rotating sleeve; 611. Transmission groove; 612. Transmission rod; 62. Rack; 63. Mounting box; 64. Guide rod; 71. Slide table; 72. Sliding block; 73. Driver; 74. Baffle; 75. Sliding rod; 76. Spring. DETAILED DESCRIPTION

[0030] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0031] Example 1, please refer to Figures 1 to 6 A grinding device for producing plastic products is used for grinding the circular edge of a disc-shaped plastic product, and comprises a lift 1, a grinding chamber 2, a grinder 3, a centering fixture 4 and a dust blowing device 5; wherein the centering fixture 4 is arranged at the lower part of the grinding chamber 2, and is arranged to center and position the disc-shaped plastic product in the lower cavity of the grinding chamber 2, the grinder 3 is arranged to grind along the circumference of the disc-shaped plastic product, and the dust blowing device 5 is arranged to send a dust removal airflow moving from top to bottom into the grinding chamber 2, so as to blow the dust and waste generated during the grinding process away from the grinding chamber 2.

[0032] Specifically, Figures 2 to 6 As shown, the grinding chamber 2 includes a top plate 21, a surrounding cylinder 22 and a platform 23 arranged in sequence from top to bottom, the top plate 21 is fixed at the output end of the elevator 1, the elevator 1 is configured to drive the top plate 21 to move up and down, the surrounding cylinder 22 is slidably arranged on the lower surface of the top plate 21, so that the surrounding cylinder 22 is configured to be able to move up and down with the top plate 21, the platform 23 is configured to carry the disc-shaped plastic product, and the platform 23 is configured as a fixed workbench; when the surrounding cylinder 22 contacts the upper surface of the platform 23, the top plate 21, the surrounding cylinder 22 and the platform 23 together enclose a grinding operation space, and the grinder 3 grinds the disc-shaped plastic product in the grinding operation space. The elevator 1 can be any one of a hydraulic cylinder, an electric push rod or a cylinder.

[0033] like Figure 3 As shown, the grinder 3 includes a grinding wheel 31 and a grinding motor 33 . The grinding wheel 31 is installed at the output end of the grinding motor 33 . The grinding motor 33 is configured to drive the grinding wheel 31 to rotate.

[0034] The grinder 3 also includes a mechanical arm 34, the output end of which is connected to the housing of the fixed grinding motor 33. The mechanical arm 34 is configured to drive the grinding wheel 31 against the annular edge of the disc-shaped plastic product and drive the grinding wheel 31 to move along the annular edge when the grinding wheel 31 is grinding.

[0035] like Figure 6 As shown, the centering fixture 4 includes a plurality of fixed seats 41 distributed in a circular shape, one end of each fixed seat 41 is inserted into the carrier 23, a clamping rod 42 is fixed to the upper surface of each fixed seat 41, and the plurality of clamping rods 42 cooperate together to center the disc-shaped plastic product on the upper surface of the carrier 23; after the clamping rods 42 complete the centering of the disc-shaped plastic product, the surrounding tube 22 moves downward to contact the carrier 23 and the fixed seat 41.

[0036] It should be noted that a plurality of slots 231 for inserting the fixing seat 41 are provided on the carrier 23. After the fixing seat 41 is inserted into the slot 231, part of the fixing seat 41 is located below the disc-shaped plastic product, and the upper surface of the fixing seat 41 is flush with the upper surface of the carrier 23, so that the fixing seat 41 can close the slot 231 between the disc-shaped plastic product and the surrounding tube 22.

[0037] like Figure 5 As shown, the dust blowing device 5 includes a fan 51 and a control circuit for controlling the air flow rate at the outlet of the fan 51, the control circuit includes a power supply, a switch, a sliding rheostat 52 and a plurality of wires, and the combination of the power supply, the switch, the sliding rheostat 52 and the plurality of wires is a prior art and will not be described again; the fan 51 is fixed on the top surface of the top plate 21, and the air outlet of the fan 51 is located in the enclosure 22; the current supplied to the fan 51 is controlled by controlling the resistance of the sliding rheostat 52 connected to the control circuit, thereby achieving the purpose of controlling the air flow rate at the outlet of the fan 51.

[0038] like Figure 5 As shown, a dust filter box 8 is installed at the lower part of the surrounding cylinder 22, one end of the dust filter box 8 is open and faces the inside of the surrounding cylinder 22, the other end of the dust filter box 8 is provided with filter holes, and adsorption cotton is provided in the dust filter box 8; the airflow sent into the surrounding cylinder 22 by the fan 51 is discharged to the outside of the dust filter box 8 through the filter holes, and in the process of the airflow moving in the surrounding cylinder 22, the dust and waste generated by grinding are brought into the dust filter box 8, so that the dust and waste are adsorbed by the adsorption cotton.

[0039] As a further explanation of the above technical solution, since the centering of the disc-shaped plastic product on the carrier 23 is achieved by a plurality of clamping rods 42 pressing against the outer peripheral side of the disc-shaped plastic product, in order to enable the grinding wheel 31 to smoothly grind the upper part of the disc-shaped plastic product that contacts the clamping rods 42, the grinder 3 also includes a wheel cover 32. The wheel cover 32 is C-shaped, and the wheel cover 32 is semi-enclosed and arranged on the side of the grinding wheel 31, and one end of the wheel cover 32 is fixedly connected to the outer shell of the grinding motor 33; when the grinding wheel 31 moves along the circumference of the disc-shaped plastic product, the outer surface of the wheel cover 32 contacts the plurality of clamping rods 42 in turn, and applies a force to the contacted clamping rods 42 to push the clamping rods 42 away from the disc-shaped plastic product, so that the clamping rods 42 avoid the grinding wheel 31.

[0040] Furthermore, the polishing device for producing plastic products further comprises a plurality of translation mechanisms 7, and the plurality of translation mechanisms 7 are connected to a plurality of fixing seats 41 in a one-to-one correspondence, such as Figure 1 and Figure 6 As shown; the translation mechanism 7 is configured to drive the clamping rod 42 to move horizontally relative to the disc-shaped plastic product, and before the grinding wheel 31 grinds the upper part of the disc-shaped plastic product and contacts the clamping rod 42, it cooperates with the wheel cover 32 to make the corresponding clamping rod 42 temporarily move away from the disc-shaped plastic product to avoid the grinding wheel 31.

[0041] To achieve the above purpose, Figure 6 As shown, the translation mechanism 7 includes a slide 71, a slider 72 and a driver 73. The output end of the driver 73 is connected to one end of the slide 71. The fixed seat 41 is installed on the slide 71 through the slider 72. The driver 73 is configured to drive the slide 71 to move on the horizontal plane, so as to move the clamping rod 42 to achieve the centering and positioning functions of the disc-shaped plastic product. The driver 73 can be any one of a cylinder, a hydraulic cylinder or an electric push rod.

[0042] The spring 76 is arranged on the surface of the slide 72 to transmit the force acting on the slide 71 to the slide 72, so that the slide 72 can move with the slide 71, and the clamping rod 42 can move toward the disc-shaped plastic product and push the disc-shaped plastic product to be centered and positioned on the platform 23; when the clamping rod 42 avoids the grinding wheel 31, the spring 76 is arranged to use its own elastic deformation to provide a sliding space for the slide 72, so that the slide 72 can slide and move away from the disc-shaped plastic product, so that when the wheel cover 32 applies a thrust to the clamping rod 42, the clamping rod 42 can move away from the disc-shaped plastic product, thereby achieving the effect of avoiding the grinding wheel 31. After the avoidance is completed, the spring 76 pushes the slider 72 to slide toward the disc-shaped plastic product, so that the clamping rod 42 abuts against the disc-shaped plastic product again.

[0043] It should be noted that a nut is connected to the end of the slide rod 75 to prevent the slide rod 75 from slipping off the baffle 74 .

[0044] In order to improve practicality, the polishing device for producing plastic products is also configured to polish the circular edges of disc-shaped plastic products of different diameters, and can achieve good dust removal effects when polishing plastic products of different sizes.

[0045] To meet the above purpose, Figure 4 As shown, the enclosure 22 includes a plurality of enclosures 221 and a plurality of telescopic plates 222, and the plurality of enclosures 221 and the plurality of telescopic plates 222 are alternately distributed and together form a vertical columnar space, and the two plate bodies constituting the telescopic plates 222 are slidably connected to the corresponding enclosures 221 respectively; the enclosures 221 and the telescopic plates 222 are slidably arranged on the lower surface of the top plate 21 through the same auxiliary mechanism 6, and the auxiliary mechanism 6 is arranged to make the moving contacts of the telescopic plates 222 and the sliding rheostat 52 move with the movement of the enclosure 221. When the multiple enclosures 221 move closer to each other, the multiple telescopic plates 222 move closer to each other, and each telescopic plate 222 contracts. When the multiple enclosures 221 move away from each other, the multiple telescopic plates 222 move away from each other, and each telescopic plate 222 extends, thereby changing the size of the horizontal cross-sectional area of ​​the columnar space to achieve mutual adaptation between the horizontal cross-sectional area of ​​the columnar space and the horizontal cross-sectional area of ​​the disc-shaped plastic product. At the same time, the moving contact of the sliding rheostat 52 moves, so that the resistance size of the sliding rheostat 52 connected to the control circuit changes, thereby changing the air flow at the air outlet of the fan 51.

[0046] A guide plate 43 is fixed to one end of each fixing seat 41 away from the carrier 23, and a downwardly inclined slope 431 is arranged on the side of the upper surface of the guide plate 43 close to the fixing seat 41, and the inclined surface 431 is connected to the upper surface of the fixing seat 41; the plurality of inclined surfaces 431 are arranged in groups of two, and each group of inclined surfaces 431 corresponds to the lower surface of a panel 221, and the lower surface of the panel 221 is arranged to detachably contact the inclined surface 431, the upper surface of the fixing seat 41 between the guide plate 43 and the clamping rod 42, and the upper surface of the carrier 23. The telescopic plate 222 is configured to detachably contact the upper surface of the platform 23; through such a structure, the lower surface of the shroud 22 is configured to detachably contact the inclined surface 431, the upper surface of the fixed seat 41 located between the guide plate 43 and the clamping rod 42, and the upper surface of the platform 23, and when the shroud 22 contacts the inclined surface 431 and is driven by the elevator 1 to move toward the platform 23, the horizontal cross-sectional area of ​​the columnar space gradually decreases until the lower surface of the shroud 22 contacts the upper surface of the fixed seat 41 and the upper surface of the platform 23.

[0047] Since the vertical stroke of the shroud 22 each time it moves down to contact the platform 23 remains unchanged, and the position of the guide plate 43 relative to the center of the platform 23 varies with the diameter of the disc-shaped plastic product, the starting position of the shroud 22 on the inclined surface 431 during its downward movement also varies with the diameter of the disc-shaped plastic product, and as the diameter of the disc-shaped plastic product decreases, the starting position is higher and farther away from the center of the platform 23; in the process of moving from the starting position to contacting the platform 23 and the upper surface of the fixed seat 41, the horizontal cross-sectional area of ​​the columnar space enclosed by the shroud 22 gradually decreases, and the reduction increases with the increase of the horizontal distance between the starting position and the center of the platform 23. Through such a structure, the size of the horizontal cross-sectional area of ​​the columnar space enclosed by the shroud 22 is set to be negatively correlated with the horizontal component of the moving stroke of the shroud 22 on the inclined surface 431, so that the horizontal cross-sectional area of ​​the columnar space enclosed by the shroud 22 decreases with the decrease of the diameter of the disc-shaped plastic product.

[0048] like Figure 6As shown, the auxiliary mechanism 6 includes a rotating sleeve 61, a plurality of racks 62, a mounting box 63 and a plurality of guide rods 64. The mounting box 63 is fixedly mounted on the lower surface of the top plate 21, and the mounting box 63 is located on the inner side of the surrounding tube 22. The rotating sleeve 61 is vertically arranged in the space surrounded by the mounting box 63 and the top plate 21. The two ends of the rotating sleeve 61 are respectively exposed from the top plate 21 and the mounting box 63, and the rotating sleeve 61 is rotatably mounted on the top plate 21 and the mounting box 63. The rotating sleeve 61 located on the inner side of the mounting box 63 is meshed and connected with the plurality of racks 62, and the plurality of racks 62 all penetrate and are slidably connected to the mounting box 63. The plurality of racks 62 are connected and fixed to the plurality of enclosures 221 one by one, and the plurality of enclosures 221 slide synchronously on the lower surface of the top plate 21 under the cooperation of the racks 62 and the rotating sleeve 61; the guide rods 64 are fixed on the top plate 21 The installation box 63 on the top is slidably arranged under the top plate 21, and multiple groups of guide rods 64 are installed on the installation box 63, each group of guide rods 64 is provided with two and distributed in a V shape, and the two guide rods 64 in the same group are respectively connected and fixed to the two plate bodies constituting the same telescopic plate 222, and the telescopic plate 222 slides on the lower surface of the top plate 21; through the above-mentioned structure, when the multiple enclosures 221 are close to each other, the telescopic plates 222 are driven to shrink, and with the cooperation of the guide rods 64 and the installation box 63, the plate bodies constituting the telescopic plates 222 move toward the middle, so that the multiple telescopic plates 222 are close to each other, and the movement trajectory distribution of the two plate bodies constituting the same telescopic plate 222 is V-shaped; similarly, when the multiple enclosures 221 are close to each other, the multiple telescopic plates 222 can be moved away from each other, and the telescopic plates 222 can be extended.

[0049] The auxiliary mechanism 6 also includes a transmission groove 611 and a transmission rod 612. The transmission groove 611 is arranged on the top surface of the rotating sleeve 61. One end of the transmission rod 612 is arranged in the transmission groove 611, and the other end is fixedly connected to the moving contact of the sliding rheostat 52. In the process of multiple enclosures 221 approaching each other, the rotating sleeve 61 is driven to rotate by the rack 62, so that the transmission groove 611 rotates, and the transmission rod 612 is pulled to one side, so that the resistance of the sliding rheostat 52 connected to the control circuit increases, and the air flow at the outlet of the fan 51 is reduced, so that the air flow at the outlet of the fan 51 is set to be negatively correlated with the horizontal component of the moving stroke of the enclosure 22 on the inclined surface 431.

[0050] It should be noted that the dust filter box 8 is installed at the lower part of the enclosure 221 , and a detachable connection is formed between the dust filter box 8 and the enclosure 221 , and the lower surface of the dust filter box 8 is configured to detachably abut against the upper surface of the carrier 23 .

[0051] It should be noted that the rotating sleeve 61 is hollow, and the inner cavity runs through the axial ends of the rotating sleeve 61. The air outlet of the fan 51 is embedded in the top opening of the rotating sleeve 61. The dust removal airflow delivered by the fan 51 passes through the inner cavity of the rotating sleeve 61 and enters the columnar space surrounded by the surrounding tube 22.

[0052] It should be noted that part of the robot arm 34 is rotatably sleeved on the surface of the rotating sleeve 61 located below the installation box 63, and the driving device in the robot arm 34 for driving the output end of the robot arm 34 to move circumferentially along the disc-shaped plastic product is fixed on the lower surface of the top plate 21.

[0053] Embodiment 2, as Figure 7 and Figure 8 As shown, a grinding device for producing plastic products, in order to further facilitate the grinding wheel 31 to grind the outer circumferential surface of the disc-shaped plastic product, also includes a negative pressure suction cup 24 embedded in the carrier 23, and the negative pressure suction cup 24 can detachably fix the disc-shaped plastic product on its upper surface by negative pressure adsorption; further, the carrier 23 is slidably sleeved on the outer peripheral side of the negative pressure suction cup 24, and a seal is formed between the carrier 23 and the negative pressure suction cup 24, and a second lifter 241 is fixed on the lower surface of the negative pressure suction cup 24, and the second lifter 241 is configured to lift the negative pressure suction cup 24 and the disc-shaped plastic product to the top of the carrier 23 after the negative pressure suction cup 24 is connected and fixed to the disc-shaped plastic product, so that the disc-shaped plastic product is separated from the carrier 23. The second lifter 241 can be any one of a hydraulic cylinder, a pneumatic cylinder or an electric push rod.

[0054] In the above technical solution, a sealing plate 232 is fixed to the lower surface of the carrier 23, and the fixed seat 41 located in the slot 231 abuts against the sealing plate 232 to close the lower opening of the slot 231 located between the sealing plate 232, the fixed seat 41 and the carrier 23 to prevent the dust removal airflow from leaking through the slot 231.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding device for producing plastic products, used for grinding the end faces and circular edges of disc-shaped plastic products, characterized by: It comprises a grinding chamber (2), a centering fixture (4) is provided at the bottom of the grinding chamber (2), and a dust blowing device (5) is installed at the top of the grinding chamber (2); The grinding chamber (2) comprises a top plate (21), a shroud (22) and a carrier (23) which are arranged in sequence from top to bottom, and the shroud (22) is slidably mounted on the lower end of the top plate (21); the centering fixture (4) comprises at least four fixed seats (41) distributed in a circular shape, one end of each fixed seat (41) is inserted into the carrier (23), and the other end of each fixed seat (41) is fixed with a guide plate (43), and a side of the upper surface of the guide plate (43) close to the fixed seat (41) is provided with a downwardly inclined inclined surface (431), and the inclined surface (431) is connected to the upper surface of the fixed seat (41); the dust blowing device (5) comprises a fan (51), and the fan (51) is configured to send a dust removal airflow moving from top to bottom into the shroud (22); The enclosure (22) includes a plurality of enclosures (221) and a plurality of telescopic plates (222), wherein the plurality of enclosures (221) and the plurality of telescopic plates (222) are alternately distributed and together enclose a vertical columnar space; the plurality of inclined surfaces (431) are arranged in groups of two, and each group of inclined surfaces (431) corresponds to the lower surface of a enclosure (221); when the enclosure (221) moves downward along the inclined surface (431), the horizontal cross-sectional area of ​​the columnar space gradually decreases.

2. A polishing device for producing plastic products according to claim 1, characterized in that: The enclosure plate (221) and the telescopic plate (222) are both slidably arranged on the lower surface of the top plate (21); the lower surface of the telescopic plate (222) and the lower surface of the enclosure plate (221) are flush.

3. A polishing device for producing plastic products according to claim 2, characterized in that: It also includes an auxiliary mechanism (6) and a sliding rheostat (52). The auxiliary mechanism (6) is configured to enable the movable contacts of the telescopic plate (222) and the sliding rheostat (52) to move along with the movement of the enclosure plate (221). The sliding rheostat (52) cooperates with the fan (51).

4. A polishing device for producing plastic products according to claim 1, characterized in that: A clamping rod (42) is fixed to the upper surface of each fixing seat (41), and the plurality of clamping rods (42) cooperate together to center the disc-shaped plastic product on the upper surface of the carrier (23).

5. A polishing device for producing plastic products according to claim 4, characterized in that: A grinding machine (3) is provided in the grinding chamber (2). The grinding machine (3) comprises a grinding wheel (31) and a wheel cover (32). The grinding wheel (31) is configured to grind along the circumference of a rotating plastic product, and the wheel cover (32) is C-shaped.

6. A polishing device for producing plastic products according to claim 5, characterized in that: The wheel cover (32) is configured to apply a force to the clamping rod (42) to push the disc-shaped plastic product away from the disc-shaped plastic product before the grinding wheel (31) grinds the outer surface of the disc-shaped plastic product that contacts the clamping rod (42).

7. A polishing device for producing plastic products according to claim 6, characterized in that: The invention also includes a plurality of translation mechanisms (7), which are connected to a plurality of fixed seats (41) in a one-to-one correspondence; the translation mechanism (7) includes a slide (71), a slider (72) and a driver (73); the output end of the driver (73) is connected to one end of the slide (71), the other end of the slide (71) is connected and fixed with a baffle (74), and the fixed seat (41) is installed on the slide (71) through the slider (72).

8. A polishing device for producing plastic products according to claim 7, characterized in that: The slider (72) is slidably mounted on the upper surface of the slide (71), and a slide rod (75) is fixed to one end of the slider (72). The slide rod (75) passes through the baffle (74), and a spring (76) is sleeved on the surface of the slide rod (75) between the baffle (74) and the slider (72).

9. The polishing device for producing plastic products according to claim 1, characterized in that: A negative pressure suction cup (24) is embedded in the carrier (23) and is used to fix the disc-shaped plastic product above the carrier (23).

Images