Plastic mold polishing device

Abstract

The utility model relates to the technical field of plastic mold machining, in particular to a plastic mold polishing device which comprises a machining table, a polishing piece and a polishing mechanism facilitating replacement of the polishing piece. The polishing mechanism comprises an air cylinder, the air cylinder is fixedly installed on the fixing plate, and a piston rod of the air cylinder is connected with the double-face rack through a rotating connector. The double-sided rack is slidably mounted in the mounting cylinder, and the mounting cylinder is fixedly mounted on the rotating disc; a spur rack slides on the rotating disc and penetrates through the rotating disc; the lower end of the straight rack is fixedly connected with a grinding disc, and the lower end of the double-face rack is fixedly connected with a grinding head. According to the polishing device, when the piston rod of the air cylinder pulls the double-face rack to ascend, the double-face rack drives the second gear to rotate, the second gear drives the straight rack to descend, the polishing disc descends when the polishing head ascends, otherwise, the polishing disc ascends when the polishing head descends, polishing pieces can be replaced conveniently to adapt to different polishing conditions, and the polishing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic mold processing technology, and specifically to a plastic mold grinding device. Background Technology

[0002] Plastic molds are tools used in the plastics processing industry in conjunction with plastic molding machines to give plastic products a complete shape and precise dimensions. After the plastic mold is formed, the surface of the plastic mold will be relatively rough, so the surface of the plastic mold needs to be sanded. After sanding, the plastic mold is polished. Soaking it in polishing liquid will make the surface of the mold smoother. Afterwards, the polishing liquid on the surface is dried.

[0003] Existing technology, such as the utility model disclosed in patent publication number CN221911259U, discloses a plastic mold drying and polishing device, including a machine casing. A motor is fixedly connected to the back of the machine casing. A rotary output shaft is fixedly connected to the front output end of the motor. A limit block is fixedly connected to the front of the rotary output shaft. A limit rod is slidably connected to the center of the limit block. A spring is provided on the outer side of the limit rod. An output shaft is fixedly connected to the top of the limit rod. This utility model, through the setting of a conveying component, specifically, uses the motor to drive the limit rod to rotate, thereby allowing a push plate to move along the left side of the limit rod. When the mold is placed in the device, the push plate can push the mold to achieve a conveying effect. Wiping plates are connected to the front and rear of the push plate to effectively clean dust generated during polishing. Subsequently, the push plate moves down along the limit rod and returns to the starting position along the limit rod, thus repeating the cycle to achieve a highly efficient conveying effect.

[0004] Existing mold grinding equipment typically uses grinding discs and grinding heads to grind molds. However, grinding discs and grinding heads are suitable for different situations. During the grinding process, grinding parts need to be changed according to the situation, which will affect the grinding efficiency.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this invention is to provide a plastic mold grinding device that can effectively solve the above-mentioned technical problems.

[0007] To achieve the purpose of this utility model, the following technical solution is adopted: a plastic mold grinding device, comprising: a processing table, a grinding part, and a grinding mechanism for easy replacement of the grinding part;

[0008] The grinding mechanism includes: a cylinder, which is fixedly mounted on a fixed plate; the piston rod of the cylinder is connected to a double-sided rack via a rotary joint; the double-sided rack is slidably mounted in a mounting cylinder, which is fixedly mounted on a rotating disk; a straight rack slides and passes through the rotating disk; a grinding disc is fixedly connected to the lower end of the straight rack, and a grinding head is fixedly connected to the lower end of the double-sided rack.

[0009] Furthermore, a second gear is symmetrically arranged on both sides of the double-sided rack, and the second gear meshes with the double-sided rack.

[0010] Furthermore, the second gear meshes with the spur rack.

[0011] Furthermore, the grinding disc has a through hole aligned with the grinding head, and the diameter of the through hole is larger than the diameter of the grinding head.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention is a plastic mold grinding device. When the piston rod of the cylinder pulls the double-sided rack upward, the double-sided rack drives the second gear to rotate. The second gear drives the spur rack downward, so that when the grinding head rises, the grinding disc falls, and vice versa. This makes it easy to change the grinding parts to adapt to different grinding conditions and improves grinding efficiency. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] Figure 1 This is a schematic diagram of the structure of a plastic mold grinding device according to the present invention.

[0015] Figure 2 This is a schematic diagram of the adjusting device in this utility model.

[0016] Figure 3 This is a schematic diagram of the grinding mechanism in this utility model.

[0017] Figure 4 This is a cross-sectional structural diagram of the grinding mechanism in this utility model.

[0018] In the diagram: 1. Processing table; 2. Frame; 3. Electric actuator; 4. Adjustment device; 5. Clamping block; 6. Connecting block; 7. Cylinder; 8. Fixing plate; 9. Mounting plate; 10. Fixing frame; 11. Motor; 12. First gear; 13. Gear ring; 14. Rotating disk; 15. Straight rack; 16. Double-sided rack; 17. Second gear; 18. Grinding head; 19. Grinding disc; 20. Mounting cylinder; 21. Blower. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0020] In the description of this utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. When a mechanism is referred to as being "fixed to" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected" to another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism at the same time. When a mechanism is considered to be "set on" another mechanism, it can be directly set on the other mechanism or there may be an intervening mechanism at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0021] like Figures 1 to 4 As shown, this utility model discloses a plastic mold grinding device, including: a processing table 1 and a grinding mechanism for easy replacement of grinding parts.

[0022] For grinding, select grinding disc 19 and grinding head 18.

[0023] A frame 2 is fixedly installed on the processing table 1, and an electric push rod 3 is fixedly installed on the frame 2. The electric push rod 3 is fixedly connected to a clamping block 5, which is slidably installed on the processing table 1. An adjustment device 4 is provided on the frame 2. The adjustment device 4 is a dual-axis moving module in the prior art, which is used to drive the connecting block 6 to move, thereby adjusting the position of the grinding mechanism. The connecting block 6 is fixedly connected to the fixing frame 10.

[0024] The grinding mechanism includes: a straight rack 15, a double-sided rack 16, and a cylinder 7 for adjusting the lifting of the double-sided rack 16; the cylinder 7 is fixedly mounted on a fixed plate 8, and the fixed plate 8 is fixedly mounted on a connecting block 6; the piston rod of the cylinder 7 is connected to the double-sided rack 16 via a rotary joint; the rotary joint is rotatably mounted on the piston rod of the cylinder 7, and the double-sided rack 16 is fixedly connected to the rotary joint; the double-sided rack 16 is slidably mounted in a mounting cylinder 20, and the mounting cylinder 20 is fixedly mounted on a rotating disk 14; the mounting cylinder 20 rotates and passes through a mounting plate 9, and the mounting plate 9 is fixedly mounted on a fixed frame 10; second gears 17 are symmetrically arranged on both sides of the double-sided rack 16, and the second gears 17 mesh with the double-sided rack 16; the second gears 17 are rotatably mounted on a fixed rod. The two ends of the fixed rod are fixedly installed on the support rod, which is fixedly installed on the rotating disk 14; the second gear 17 meshes with the rack 15; the rack 15 slides and passes through the rotating disk 14; a gear ring 13 is fixedly installed on the rotating disk 14, and the gear ring 13 meshes with the first gear 12; the first gear 12 is fixedly installed on the rotating shaft, the output shaft of the motor 11 is fixedly connected to the rotating shaft, and the motor 11 is fixedly installed on the fixed frame 10; a grinding disc 19 is fixedly connected to the lower end of the rack 15, and a grinding head 18 is fixedly connected to the bottom of the double-sided rack 16; the grinding disc 19 has a through hole aligned with the grinding head 18, and the diameter of the through hole is larger than the diameter of the grinding head 18; the double-sided rack 16 can pass through the through hole on the grinding disc 19.

[0025] The rotating shaft drives the hair dryer 21 to work, and the outer shell of the hair dryer 21 is fixedly installed on the fixed frame 10; the outer shell of the hair dryer 21 is provided with a blower nozzle, which faces the straight rack 15 and the double-sided rack 16.

[0026] When the piston rod of cylinder 7 pulls the double-sided rack 16 upward, the double-sided rack 16 drives the second gear 17 to rotate. The second gear 17 drives the spur rack 15 downward, so that when the grinding head 18 rises, the grinding disc 19 falls, and vice versa. This facilitates the replacement of grinding parts to adapt to different grinding conditions and improves grinding efficiency. In the existing technology, a single grinding part is not very effective at grinding the inside of plastic molds. Usually, different grinding machines are used to grind different parts of the mold, or the grinding parts are removed and replaced with other types of grinding parts, which takes time. This will affect the grinding efficiency; therefore, by setting up this grinding mechanism, the double-sided rack 16 and the straight rack 15 move in opposite directions, so that the grinding head 18 and the grinding disc 19 move in opposite directions. When changing grinding parts, the grinding part to be replaced rises and the grinding part to be used falls. The grinding part is replaced while controlling the height of the grinding part. During the process of raising and lowering the grinding head 18 and the grinding disc 19, when the grinding disc 19, the grinding head 18 and the air outlet of the blower 21 are aligned, the debris on the grinding disc 19 and the grinding head 18 can be blown off, so as to avoid the debris from the grinding affecting the grinding effect of the next grinding.

[0027] The straight rack 15 and the double-sided rack 16 have the same length; the length of the straight rack 15 and the double-sided rack 16 is half the height of the frame 2.

[0028] Working principle:

[0029] Place the plastic mold on the processing table 1, start the electric actuator 3, the electric actuator 3 pushes the clamping block 5 to clamp and fix the plastic mold; start the motor 11, the output shaft of the motor 11 drives the first gear 12 to rotate, the first gear 12 drives the gear ring 13 to rotate, the gear drives the rotating disk 14 to rotate, the rotating disk 14 drives the double-sided rack 16 and the straight rack 15 to rotate, the straight rack 15 drives the grinding disk 19 to rotate, and the double-sided rack 16 drives the grinding head 18 to rotate; start the cylinder 7, the piston rod of the cylinder 7 drives the rotary joint to rise, the rotary joint drives the double-sided rack 16 to rise, the double-sided rack 16 drives the second gear 17 to rotate, the second gear 17 drives the straight rack 15 to fall, the straight rack 15 drives the grinding disk 19 to fall, so that the grinding disk 18... 9. It can contact and polish plastic molds; when the polishing parts need to be replaced, the piston rod of cylinder 7 pushes the double-sided rack 16 down, the double-sided rack 16 drives the polishing head 18 down, and when the double-sided rack 16 descends, it drives the second gear 17 to rotate in the opposite direction. The second gear 17 drives the straight rack 15 up, the straight rack 15 drives the polishing disc 19 up, and the polishing head 18 passes through the polishing disc 19 to complete the replacement of the polishing parts, saving the time of removing and installing the polishing parts and improving polishing efficiency; during the process of raising and lowering the polishing head 18 and the polishing disc 19, when the polishing disc 19, the polishing head 18 and the air outlet of the blower 21 are aligned, the debris on the polishing disc 19 and the polishing head 18 can be blown off, avoiding the debris from the polishing from affecting the polishing effect of the next polishing.

[0030] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0031] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A plastic mold grinding device, characterized in that, include: Processing table (1), grinding parts, and grinding mechanism for easy replacement of grinding parts; The grinding mechanism includes: a cylinder (7), which is fixedly mounted on a fixed plate (8), and the piston rod of the cylinder (7) is connected to a double-sided rack (16) through a rotary joint; the double-sided rack (16) is slidably mounted in a mounting cylinder (20), and the mounting cylinder (20) is fixedly mounted on a rotating disk (14); a straight rack (15) slides and passes through the rotating disk (14); a grinding disc (19) is fixedly connected to the lower end of the straight rack (15), and a grinding head (18) is fixedly connected to the lower end of the double-sided rack (16).

2. The plastic mold grinding device as described in claim 1, characterized in that, The double-sided rack (16) is symmetrically provided with second gears (17) on both sides, and the second gears (17) mesh with the double-sided rack (16).

3. The plastic mold grinding device as described in claim 2, characterized in that, The second gear (17) meshes with the spur rack (15).

4. The plastic mold grinding device as described in claim 1, characterized in that, The grinding disc (19) has a through hole aligned with the grinding head (18), and the diameter of the through hole is larger than the diameter of the grinding head (18).

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