Automatic grinding device

Abstract

The utility model relates to the technical field of polishing devices, and discloses an automatic polishing device which comprises a machine table, a positioning mechanism, a driving mechanism and at least one polishing mechanism. The positioning mechanism comprises at least two positioning turntables; the positioning turntable is used for fixing a to-be-polished product; the driving mechanism is fixedly connected to the machine table and used for driving the positioning rotary disc to rotate. The grinding mechanism comprises a grinding assembly movably connected to the machine table, and the grinding assembly is provided with a grinding position close to the positioning rotary disc and used for grinding the periphery of the product and a far position far away from the positioning rotary disc. And each positioning rotating disc is matched with a polishing assembly. The automatic polishing device is short in machining period and stable in machining quality.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding devices, in particular to an automatic grinding device. Background Art

[0002] After injection molding, plastic products may usually have protruding defects such as small burrs on the outer ring. During the assembly and subsequent spraying process of the product, the small burrs will affect the assembly and spraying effect. Therefore, the small burrs need to be removed first to meet the appearance and structural requirements of the product before the subsequent assembly and spraying process can be carried out.

[0003] There are usually two ways to handle flashing: one is to manually cut and process with a blade, and the other is to use a robot to grind along the periphery of the product. However, for thinner and smaller plastic products, it is not suitable to use a robot to grind along the periphery, and manual blade processing is usually chosen. However, manual blade processing can only grind one at a time, which is inefficient and cannot keep up with the production speed of the injection molding machine. In addition, the processing quality of manual blade processing cannot be guaranteed. Utility Model Content

[0004] In view of this, the utility model provides an automatic grinding device to solve the problem that the manual processing of flashing has a long cycle and unstable processing quality.

[0005] The utility model provides an automatic grinding device, comprising a machine platform, a positioning mechanism, a driving mechanism and at least one grinding mechanism; the positioning mechanism comprises at least two positioning turntables; the positioning turntables are used to fix the product to be ground; the driving mechanism is fixedly connected to the machine platform and is used to drive the positioning turntables to rotate; the grinding mechanism comprises a grinding component movably connected to the machine platform, the grinding component having a grinding position close to the positioning turntable and grinding the periphery of the product, and a remote position away from the positioning turntable; wherein each of the positioning turntables is matched with the grinding component.

[0006] Beneficial effects: The positioning turntable can position and fix the product, and drive the product to rotate under the drive of the driving mechanism. The grinding mechanism in the grinding position can grind the outer periphery of the rotating product to achieve automatic grinding of the product's front edge, which can not only speed up the grinding process, but also ensure that each product has a good processing quality. Compared with the robot grinding along the periphery of the product, the structure is simple and the processing cost is low. In addition, the positioning mechanism includes at least two positioning turntables, and the grinding mechanism can grind the products on at least two positioning turntables at the same time, shortening the grinding cycle of at least two products, keeping up with the molding cycle of the injection molding machine, and avoiding product accumulation.

[0007] In an optional embodiment, it further includes a transmission mechanism, which is used to transmission-connect the power output shaft of the driving mechanism and at least two of the positioning turntables; the driving mechanism synchronously drives at least two of the positioning turntables to rotate through the transmission mechanism.

[0008] Beneficial effects: The driving mechanism synchronously drives at least two positioning turntables to rotate through the transmission mechanism, thereby reducing the number of driving mechanisms, simplifying the structure, and saving costs.

[0009] In an optional embodiment, a first rotating shaft is rotatably connected to the machine platform, and the positioning turntable is rotatably connected to the machine platform via the first rotating shaft; the transmission mechanism includes transmission teeth and a transmission belt; the transmission gear sleeve is arranged on the outer periphery of the first rotating shaft; the transmission belt is sequentially connected to the power output shaft and at least two of the transmission teeth.

[0010] Beneficial effects: The power output shaft of the driving mechanism can realize synchronous driving of at least two positioning turntables through the transmission teeth and the transmission belt; and the structure of the transmission mechanism is simple and occupies less space.

[0011] In an optional embodiment, a second rotating shaft is rotatably connected to the machine platform, and the transmission mechanism also includes a tensioning wheel, which is rotatably connected to the machine platform via the second rotating shaft; the tensioning wheel is provided between two adjacent positioning turntables, and the tensioning wheel is provided between the positioning turntable close to the power output shaft and the power output shaft.

[0012] Beneficial effect: The setting of the tension wheel can tension the transmission belt and ensure the transmission effect of the transmission belt on at least two positioning turntables. The tension wheel is arranged between two adjacent positioning turntables, and the tension wheel is arranged between the positioning turntable and the power output shaft, which can ensure that the transmission belt has a good transmission effect on the transmission teeth arranged on the periphery of the first rotating shaft of each positioning turntable.

[0013] In an optional embodiment, it also includes a support plate fixedly connected to the machine platform;

[0014] The grinding mechanism also includes a first driving member, which is connected to the support plate. The power output end of the first driving member is connected to the grinding assembly for driving the grinding assembly to move between the grinding position and the remote position along a first direction.

[0015] Beneficial effects: The support plate can fix the first driving member body, and the first driving member can drive and control the movement of the grinding assembly to switch it between the grinding position and the remote position.

[0016] In an optional embodiment, the grinding mechanism also includes a second driving member, which is fixedly connected to the machine platform, and a power output end of the second driving member is connected to the first driving member for driving the first driving member and the grinding assembly to move along a second direction, and the first direction is perpendicular to the second direction.

[0017] In an optional implementation, it also includes:

[0018] A first fixing plate, fixedly connected to a side of the supporting plate facing the positioning mechanism;

[0019] A second fixing plate is fixedly connected to a side of the support plate facing the positioning mechanism and is spaced apart from the first fixing plate; a through hole is provided on the second fixing plate; and the second driving member is fixedly connected to the second fixing plate;

[0020] A screw rod, both ends of which are rotatably connected to the first fixing plate and the second fixing plate respectively, and one end connected to the second fixing plate passes through the through hole and is connected to the power output end of the second driving member;

[0021] A slider, sleeved on the outer periphery of the screw rod, matched with the screw rod thread, and slidably matched with the support plate;

[0022] The third fixing plate is fixedly connected to the side of the sliding block facing the positioning mechanism, and the first driving member is fixedly connected to the third fixing plate.

[0023] In an optional embodiment, the grinding assembly includes:

[0024] A grinding push plate fixedly connected to the power output end of the first driving member;

[0025] The grinding sandpaper is detachably connected to the side of the grinding push plate facing the positioning mechanism.

[0026] Beneficial effects: The grinding push plate can provide hardness for the grinding sandpaper, ensuring the grinding effect when the grinding sandpaper is grinding the periphery of the product. The grinding sandpaper is detachably connected, which is convenient for timely replacement of the grinding sandpaper.

[0027] In an optional embodiment, the polishing assembly further includes Velcro, which is fixedly connected to the polishing push plate and is used for detachably adhering the polishing sandpaper.

[0028] Beneficial effect: The setting of the Velcro allows the grinding sandpaper to be replaced more conveniently without the aid of tools, and the grinding sandpaper can be better fixed.

[0029] In an optional embodiment, the positioning mechanism further includes an adsorption component, which is disposed on the machine platform and is used to adsorb the product on the positioning turntable.

[0030] Beneficial effects: The adsorption component can adsorb the product to fix the product, which is convenient for polishing the product. After polishing, the adsorption component can release the product to facilitate replacement of the product.

[0031] In an optional embodiment, the positioning mechanism further includes a positioning column, which is protrudingly disposed on the positioning turntable and is used to cooperate with a positioning hole on the product.

[0032] Beneficial effect: The setting of the positioning column facilitates the accurate positioning of the product and ensures that the axis of the product is consistent with the axis of the positioning turntable, so that the periphery of the product can be accurately polished during rotational polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of an automatic grinding device according to an embodiment of the utility model from a first viewing angle;

[0035] Figure 2 A partial schematic diagram of an automatic grinding device according to an embodiment of the utility model Figure 1 ;

[0036] Figure 3 A partial schematic diagram of an automatic grinding device according to an embodiment of the utility model Figure 2 ;

[0037] Figure 4 A partial schematic diagram of an automatic grinding device according to an embodiment of the utility model Figure 3 .

[0038] Description of reference numerals:

[0039] 1. Machine; 2. Positioning mechanism; 21. Positioning turntable; 22. Positioning column; 3. Driving mechanism; 4. Transmission mechanism; 41. Transmission gear; 42. Transmission belt; 43. Tensioning wheel; 5. Grinding assembly; 51. Grinding push plate; 52. Grinding sandpaper; 6. Support plate; 7. First driving member; 8. Second driving member; 9. First fixed plate; 10. Second fixed plate; 11. Screw rod; 12. Sliding block; 13. Third fixed plate. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0041] Combine the following Figures 1 to 4 , describing an embodiment of the utility model.

[0042] According to an embodiment of the utility model, an automatic grinding device is provided, comprising a machine 1, a positioning mechanism 2, a driving mechanism 3 and at least one grinding mechanism; the positioning mechanism 2 comprises at least two positioning turntables 21, and the positioning turntables 21 are used to fix the product to be ground; the driving mechanism 3 is fixedly connected to the machine 1, and is used to drive the positioning turntables 21 to rotate; the grinding mechanism comprises a grinding assembly 5 movably connected to the machine 1, and the grinding assembly 5 has a grinding position close to the positioning turntable 21 and grinding the periphery of the product, and a away position away from the positioning turntable 21; wherein each positioning turntable 21 is matched with a grinding assembly 5.

[0043] The positioning turntable 21 can position and fix the product, and drive the product to rotate under the drive of the driving mechanism 3. The grinding mechanism in the grinding position can grind the outer periphery of the rotating product to achieve automatic grinding of the product's front edge, which can not only speed up the grinding process, but also ensure that each product has a good processing quality. Compared with the robot grinding along the periphery of the product, it has a simple structure and low processing cost. In addition, the positioning mechanism 2 includes at least two positioning turntables 21. The grinding mechanism can grind the products on at least two positioning turntables 21 at the same time, shortening the grinding process cycle of at least two products, keeping up with the molding cycle of the injection molding machine, and avoiding product accumulation. When the grinding component 5 is in a remote position, it is convenient to disassemble the product after grinding and replace it with a new product to be polished.

[0044] Specifically, the driving mechanism 3 can be a motor. Alternatively, the driving mechanism 3 can be a driving handle or a robot, and the driving handle can drive the grinding component to switch between the grinding position and the remote position, and a better grinding effect can also be obtained. The robot can realize the automatic driving of the grinding component. The machine 1 is provided with electrical components such as a control panel. One grinding component 5 can be matched with one positioning turntable 21, or it can be matched with two positioning turntables 21, or it can be matched with more positioning turntables 21; the number of grinding components 5 can ensure that each positioning turntable 21 has a grinding component 5 for grinding.

[0045] In one embodiment, it further includes a transmission mechanism 4, which is connected to the power output shaft of the driving mechanism 3 and at least two positioning turntables 21; the driving mechanism 3 synchronously drives at least two positioning turntables 21 to rotate through the transmission mechanism 4.

[0046] The driving mechanism 3 synchronously drives at least two positioning turntables 21 to rotate through the transmission mechanism 4, thereby reducing the number of driving mechanisms, simplifying the structure, and saving costs.

[0047] In one embodiment, a first rotating shaft is rotatably connected to the machine 1, and the positioning turntable 21 is rotatably connected to the machine 1 through the first rotating shaft; the transmission mechanism 4 includes transmission teeth 41 and a transmission belt 42; the transmission teeth 41 are sleeved on the outer periphery of the first rotating shaft; the transmission belt 42 is sequentially connected to the power output shaft and at least two transmission teeth 41.

[0048] The power output shaft of the driving mechanism 3 can realize synchronous driving of at least two positioning turntables 21 through the transmission gear 41 and the transmission belt 42; and the structure of the transmission mechanism 4 is simple and occupies less space.

[0049] In one embodiment, a second rotating shaft is rotatably connected to the machine 1, and the transmission mechanism 4 also includes a tensioning wheel 43, which is rotatably connected to the machine 1 through the second rotating shaft; a tensioning wheel 43 is provided between two adjacent positioning turntables 21, and a tensioning wheel 43 is provided between the positioning turntable 21 close to the power output shaft and the power output shaft.

[0050] The setting of the tension wheel 43 can tighten the transmission belt 42 to ensure the transmission effect of the transmission belt 42 on at least two positioning turntables 21. A tension wheel 43 is provided between two adjacent positioning turntables 21, and a tension wheel 43 is provided between the positioning turntable 21 and the power output shaft, which can ensure that the transmission belt 42 has a good transmission effect on the transmission teeth 41 provided on the periphery of the first rotating shaft of each positioning turntable 21.

[0051] In one embodiment, it also includes a support plate 6, which is fixedly connected to the machine table 1; the grinding mechanism also includes a first driving member 7, which is connected to the support plate 6, and the power output end of the first driving member 7 is connected to the grinding assembly 5, for driving the grinding assembly 5 to move between the grinding position and the away position along the first direction.

[0052] The support plate 6 can fix the main body of the first driving member 7, and the first driving member 7 can drive and control the movement of the grinding assembly 5 to switch it between the grinding position and the remote position.

[0053] Specifically, the first driving member 7 may be a cylinder.

[0054] In one embodiment, the grinding mechanism also includes a second driving member 8, which is fixedly connected to the machine table 1. The power output end of the second driving member 8 is connected to the first driving member 7, and is used to drive the first driving member 7 and the grinding assembly 5 to move along the second direction, and the first direction is perpendicular to the second direction.

[0055] By setting the second driving member 8, the first driving member 7 and the grinding assembly 5 can be driven to move along the second direction, so that the product can be grinded at different positions of the grinding assembly 5, avoiding poor grinding effect caused by repeated grinding of the same position of the grinding assembly 5.

[0056] Specifically, the first direction is a horizontal direction, and the second direction is a vertical direction.

[0057] In one embodiment, it also includes a first fixing plate 9, a second fixing plate 10, a screw rod 11, a slider 12 and a third fixing plate 13; the first fixing plate 9 is fixedly connected to the side of the support plate 6 facing the positioning mechanism 2; the second fixing plate 10 is fixedly connected to the side of the support plate 6 facing the positioning mechanism 2, and is spaced apart from the first fixing plate 9; a through hole is provided on the second fixing plate 10; the second driving member 8 is fixedly connected to the second fixing plate 10; the two ends of the screw rod 11 are rotatably connected to the first fixing plate 9 and the second fixing plate 10 respectively, and the end connected to the second fixing plate 10 is connected to the power output end of the second driving member 8 through the through hole; the slider 12 is sleeved on the outer periphery of the screw rod 11, threadedly matched with the screw rod 11, and slidingly matched with the support plate 6; the third fixing plate 13 is fixedly connected to the side of the slider 12 facing the positioning mechanism 2, and the first driving member 7 is fixedly connected to the third fixing plate 13.

[0058] The screw rod 11 rotates under the drive of the second driving member 8, and the slider 12 threadedly connected to the screw rod 11 reciprocates along the axial direction of the screw rod 11 under the sliding limit of the support plate 6, and drives the grinding assembly 5 to reciprocate along the second direction, so that the grinding assemblies 5 at different positions can grind the product.

[0059] In a specific embodiment, the automatic grinding device further comprises a limit block connected between the first fixing plate 9 and the second fixing plate 10 and fixedly connected to the support plate 6, and the support plate 6 is slidably matched with the slider 12 through the limit block. The second driving member 8 can be a motor.

[0060] In one embodiment, the grinding mechanism includes a grinding push plate 51 and grinding sandpaper 52; the grinding push plate 51 is fixedly connected to the power output end of the first driving member 7; the grinding sandpaper 52 is detachably connected to the side of the grinding push plate 51 facing the positioning mechanism 2.

[0061] The grinding push plate 51 can provide hardness for the grinding sandpaper 52, ensuring the grinding effect when the grinding sandpaper 52 grinds the periphery of the product. The grinding sandpaper 52 is detachably connected, which is convenient for timely replacement of the grinding sandpaper 52.

[0062] In one embodiment, the grinding assembly 5 further includes Velcro, which is fixedly connected to the grinding push plate 51 and is used for detachably bonding the grinding sandpaper 52 .

[0063] The setting of the Velcro allows the grinding sandpaper 52 to be replaced more conveniently without the aid of tools, and the grinding sandpaper 52 can be better fixed.

[0064] As a convertible embodiment, the grinding assembly 5 may also include a buckle or a fastener, and the grinding sandpaper 52 is detachably connected to the grinding push plate 51 via the buckle or the fastener.

[0065] In one embodiment, the positioning mechanism 2 further includes an adsorption component, which is disposed on the machine platform 1 and is used to adsorb the product on the positioning turntable 21 .

[0066] The adsorption component can adsorb the product to fix the product, which is convenient for polishing the product. After polishing, the adsorption component can release the product to facilitate replacement of the product. The adsorption component may include a suction cup and a vacuum pump. The suction cup is provided with adsorption holes. The vacuum pump can generate negative pressure at the adsorption holes to adsorb the product.

[0067] In one embodiment, the positioning mechanism 2 further includes a positioning column 22 , which is protrudingly disposed on the positioning turntable 21 and is used to cooperate with a positioning hole on the product.

[0068] The arrangement of the positioning column 22 facilitates accurate positioning of the product and ensures that the axis of the product is consistent with the axis of the positioning turntable 21, so that the periphery of the product can be accurately polished during rotational polishing.

[0069] In a specific embodiment, the product can be a circular bracket for a mobile phone. The injection mold can be injection molded 4 times each time the mold is opened, and the cycle is about 16 seconds. When manually processed with a blade, it is impossible to keep up with the production speed of injection molding, and the products will be piled up. At the same time, the product processing quality is unstable. The automatic grinding device provided in this embodiment, the positioning mechanism 2 may include four positioning turntables 21, which are divided into two groups with intervals, each group has two intervals, and each group of positioning turntables 21 is matched with a grinding mechanism. The four positioning turntables 21 are synchronously driven to rotate through the transmission mechanism 4 and the drive mechanism 3, and the grinding mechanism grinds them at the same time. Each grinding process can grind four products formed in one cycle of the injection mold at the same time, and the grinding cycle can be shortened to about 8 seconds, which can avoid product accumulation, and the processing quality of the product can also be guaranteed.

[0070] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An automatic grinding device, characterized in that: include: Machine (1); The positioning mechanism (2) comprises at least two positioning turntables (21); the positioning turntables (21) are used to fix the product to be polished; A driving mechanism (3) fixedly connected to the machine platform (1) and used for driving the positioning turntable (21) to rotate; At least one grinding mechanism, the grinding mechanism comprising a grinding assembly (5) movably connected to the machine table (1), the grinding assembly (5) having a grinding position close to the positioning turntable (21) and grinding the outer periphery of the product, and a remote position away from the positioning turntable (21); wherein each positioning turntable (21) is matched with the grinding assembly (5).

2. The automatic grinding device according to claim 1, characterized in that: It also comprises a transmission mechanism (4), wherein the transmission mechanism (4) is connected to the power output shaft of the driving mechanism (3) and at least two positioning turntables (21); the driving mechanism (3) synchronously drives at least two positioning turntables (21) to rotate through the transmission mechanism (4).

3. The automatic grinding device according to claim 2, characterized in that: The machine platform (1) is rotatably connected to a first rotating shaft, and the positioning turntable (21) is rotatably connected to the machine platform (1) via the first rotating shaft; the transmission mechanism (4) comprises: A transmission tooth (41) sleeved on the outer circumference of the first rotating shaft; The transmission belt (42) is sequentially connected to the power output shaft and at least two of the transmission teeth (41).

4. The automatic grinding device according to claim 3, characterized in that: The machine platform (1) is rotatably connected to a second rotating shaft, and the transmission mechanism (4) further comprises a tensioning wheel (43), which is rotatably connected to the machine platform (1) via the second rotating shaft; the tensioning wheel (43) is arranged between two adjacent positioning rotating disks (21), and the tensioning wheel (43) is arranged between the positioning rotating disk (21) close to the power output shaft and the power output shaft.

5. The automatic grinding device according to claim 1, characterized in that: It also includes a support plate (6), wherein the support plate (6) is fixedly connected to the machine platform (1); The grinding mechanism further comprises a first driving member (7), wherein the first driving member (7) is connected to the support plate (6), and a power output end of the first driving member (7) is connected to the grinding assembly (5) for driving the grinding assembly (5) to move along a first direction between the grinding position and the remote position.

6. The automatic grinding device according to claim 5, characterized in that: The grinding mechanism further comprises a second driving member (8), the second driving member (8) being fixedly connected to the machine platform (1), the power output end of the second driving member (8) being connected to the first driving member (7) for driving the first driving member (7) and the grinding assembly (5) to move along a second direction, the first direction being perpendicular to the second direction.

7. The automatic grinding device according to claim 6, characterized in that: Also includes: A first fixing plate (9) fixedly connected to a side of the supporting plate (6) facing the positioning mechanism (2); a second fixing plate (10), fixedly connected to the support plate (6) on a side facing the positioning mechanism (2), and spaced apart from the first fixing plate (9); a through hole is provided on the second fixing plate (10); and the second driving member (8) is fixedly connected to the second fixing plate (10); A screw rod (11), both ends of which are rotatably connected to the first fixing plate (9) and the second fixing plate (10), and one end connected to the second fixing plate (10) passes through the through hole and is connected to the power output end of the second driving member (8); A slider (12) is sleeved on the outer circumference of the screw rod (11), threadably engaged with the screw rod (11), and slidably engaged with the support plate (6); A third fixed plate (13) is fixedly connected to the sliding block (12) on a side facing the positioning mechanism (2), and the first driving member (7) is fixedly connected to the third fixed plate (13).

8. The automatic grinding device according to claim 5, characterized in that: The grinding assembly (5) comprises: A grinding push plate (51) fixedly connected to the power output end of the first driving member (7); The grinding sandpaper (52) is detachably connected to the grinding push plate (51) on one side facing the positioning mechanism (2).

9. The automatic grinding device according to claim 8, characterized in that: The polishing assembly (5) further comprises a Velcro, which is fixedly connected to the polishing push plate (51) and is used for bonding the polishing sandpaper (52).

10. The automatic grinding device according to any one of claims 1 to 9, characterized in that: The positioning mechanism (2) further comprises an adsorption component, which is arranged on the machine platform (1) and is used to adsorb the product on the positioning turntable (21); And / or, the positioning mechanism (2) further comprises a positioning column (22), wherein the positioning column (22) is protrudingly arranged on the positioning turntable (21) and is used to cooperate with a positioning hole on the product.

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