Grinding and polishing device for mold machining

Abstract

The invention discloses a grinding and polishing device for mold machining, and relates to the technical field of polishing devices.The grinding and polishing device comprises an electric grinding machine body, the top end of the electric grinding machine body is fixedly connected with a connecting wire, the output end of the electric grinding machine body is connected with a rotating shaft, and a grinding head is arranged below the rotating shaft; and long-strip-shaped abrasive paper is arranged at the bottom end of the polishing head. The polishing device further comprises an adjusting mechanism and a clamping mechanism. By arranging the adjusting mechanism and the clamping mechanism, long-strip-shaped abrasive paper is tightly attached to the bottom end of the grinding head, the two ends of the abrasive paper are fixed to the two movable bases correspondingly, the position of the abrasive paper is adjusted by adjusting the positions of the two movable bases, and therefore after the abrasive paper at the bottom end of the grinding head is used, the abrasive paper can be conveniently ground. And the unused abrasive paper part is moved to the bottom end of the grinding head for use, so that the abrasive paper replacement frequency can be reduced, the grinding efficiency of the mold is improved, and the mold is convenient to grind.

Description

Technical Field

[0001] The present invention relates to the technical field of polishing devices, and specifically to a grinding and polishing device for mold processing. Background Art

[0002] During the processing of molds, grinding and polishing operations need to be performed on the molds. Polishing can remove machining marks, tool marks, and burrs on the mold surface, making the surface of the molded product smooth and flawless, and improving the appearance aesthetics. A smooth mold surface helps materials (such as plastics or metals) better fill the cavity, reducing surface defects of the product. When grinding and polishing the mold, usually first rough polish the mold with coarse sandpaper, then finely polish it with fine sandpaper, and finally achieve a mirror effect under high-speed rotation or magnetic field action by using ultra-fine polishing paste or magnetic abrasive polishing technology, which is applicable to high-precision demand scenarios such as optical molds.

[0003] When using sandpaper to grind the mold, a handheld electric grinder needs to be used. Usually, after cutting the sandpaper into small pieces, it is pasted to the bottom end of the grinding head with glue, and then the grinder runs to drive the grinding head to rotate, and the sandpaper contacts the mold for grinding operations. However, after using a piece of sandpaper for a period of time, the old sandpaper needs to be removed, and then the new sandpaper needs to be cut and pasted and fixed. The operation is relatively complicated, which affects the grinding efficiency of the mold. In order to achieve the purpose of facilitating the grinding of the mold, a grinding and polishing device for mold processing is provided. Summary of the Invention

[0004] The purpose of the present invention is to provide a grinding and polishing device for mold processing in order to achieve the purpose of facilitating the grinding of the mold.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A grinding and polishing device for mold processing, including an electric grinder body, a connecting wire is fixedly connected to the top end of the electric grinder body, the output end of the electric grinder body is connected to a rotating shaft, a grinding head is arranged below the rotating shaft, a strip-shaped sandpaper is arranged at the bottom end of the grinding head, and the position of the sandpaper is adjusted by an adjusting mechanism. The adjusting mechanism includes an adjusting seat, the adjusting seat is fixedly connected to the bottom end of the rotating shaft, the grinding head is fixedly connected to the bottom end of the adjusting seat, movable grooves are symmetrically opened on the outer wall of the adjusting seat, movable frames are slidably connected to the inner walls of the movable grooves, movable seats are fixedly connected to the outer walls of the movable frames, tooth blocks are fixedly connected to the side of the outer wall of the movable frame away from the movable seat, tooth plates are symmetrically slidably connected inside the adjusting seat, a first spring is connected between the two tooth plates, a displacement seat is fixedly connected to the top end of the tooth plate, the displacement seat extends out of the adjusting seat, and the sandpaper is fixed to the outer wall of the movable seat through a clamping mechanism.

[0006] As a further solution of the present invention: The adjusting mechanism further includes an arc-shaped groove, which is opened inside the adjusting seat and located at the top of the displacement seat. A transverse groove is opened inside the adjusting seat between the two arc-shaped grooves. A rotating disk extending out of the displacement seat is rotatably connected inside the displacement seat. The top end of the rotating disk is flat and fixedly connected with a transverse plate. One end of the rotating disk is fixedly connected with a connecting shaft, one end of the connecting shaft is fixedly connected with a rotating block, and the top end of the rotating block is fixedly connected with a convex block.

[0007] As a further solution of the present invention: The clamping mechanism includes a jack, which is opened on the outer wall of the sandpaper. A displacement plate is slidably connected inside the movable seat. A threaded rod is fixedly connected to the outer wall of the displacement plate, and the threaded rod extends to the outer wall of the movable seat. Straight gears are rotatably connected on both sides of the displacement plate inside the movable seat. A connecting rod is slidably connected to the outer wall of the straight gear inside the movable seat. One end of the connecting rod extending out of the movable seat is fixedly connected with a clamping plate. A threaded cylinder is rotatably connected inside the clamping plate. One end of the threaded cylinder is fixedly connected with a rotating column. A clamping block extending out of the rotating column is slidably connected inside the rotating column. A second spring is connected between the clamping block and the rotating column. A toothed ring is fixedly connected to the outer wall of the clamping plate on the outside of the rotating column.

[0008] As a further solution of the present invention: The outer wall of the movable frame fits with the inner wall of the movable groove. The outer wall of the toothed plate is provided with a first toothed groove, and one end of the toothed block is engaged with the first toothed groove.

[0009] As a further solution of the present invention: The inner wall of the arc-shaped groove fits with the outer wall of the rotating disk, and the inner wall of the transverse groove fits with the outer wall of the transverse plate.

[0010] As a further solution of the present invention: The convex block has the same orientation as the transverse plate.

[0011] As a further solution of the present invention: The inner wall of the jack fits with the outer wall of the threaded rod.

[0012] As a further solution of the present invention: Second toothed grooves are opened on the outer walls of the displacement plate and the connecting rod, and the second toothed grooves are engaged with the straight gears.

[0013] As a further solution of the present invention: The inner wall of the threaded cylinder is provided with internal threads, and the internal threads match the threaded rod.

[0014] As a further solution of the present invention: The inner wall of the toothed ring is provided with ratchet teeth, and one end of the clamping block is engaged with the ratchet teeth.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing an adjustment mechanism and a clamping mechanism, a strip-shaped sandpaper is closely attached to the bottom end of the grinding head, and both ends of the sandpaper are respectively fixed on two movable seats. By adjusting the positions of the two movable seats, the position of the sandpaper is adjusted. Thus, after the sandpaper at the bottom end of the grinding head is used up, the unused part of the sandpaper can be moved to the bottom end of the grinding head for use, which can reduce the frequency of sandpaper replacement, improve the grinding efficiency of the mold, and facilitate the grinding of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the adjustment seat of the present invention; Figure 3 is an installation schematic diagram of the movable seat of the present invention; Figure 4 is a schematic internal structure diagram of the adjustment seat of the present invention; Figure 5 is a schematic structural diagram of the arc-shaped groove of the present invention; Figure 6 is a schematic internal structure diagram of the displacement seat of the present invention; Figure 7 is a schematic structural diagram of the jack of the present invention; Figure 8 is a schematic internal structure diagram of the movable seat of the present invention; Figure 9 is a schematic internal structure diagram of the clamping plate of the present invention; Figure 10 is a schematic structural diagram of the toothed ring of the present invention.

[0017] In the figure: 1, electric grinding machine body; 2, connecting wire; 3, rotating shaft; 4, grinding head; 5, sandpaper; 6, adjustment mechanism; 601, adjustment seat; 602, movable groove; 603, movable frame; 604, movable seat; 605, tooth block; 606, toothed plate; 607, first spring; 608, displacement seat; 609, arc-shaped groove; 610, transverse groove; 611, rotating disc; 612, transverse plate; 613, connecting shaft; 614, rotating block; 615, convex block; 7, clamping mechanism; 701, jack; 702, displacement plate; 703, threaded rod; 704, spur gear; 705, connecting rod; 706, clamping plate; 707, threaded cylinder; 708, rotating column; 709, clamping block; 710, second spring; 711, toothed ring. DETAILED DESCRIPTION OF THE INVENTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The following will illustrate the embodiments according to the overall structure of the present invention.

[0020] Please refer to Figures 1 to 10, in the embodiments of the present invention, a grinding and polishing device for mold processing includes an electric grinding machine body 1. A connecting wire 2 is fixedly connected to the top end of the electric grinding machine body 1. The output end of the electric grinding machine body 1 is connected to a rotating shaft 3. A grinding head 4 is arranged below the rotating shaft 3. A long strip of sandpaper 5 is arranged at the bottom end of the grinding head 4. The position of the sandpaper 5 is adjusted by an adjusting mechanism 6. The adjusting mechanism 6 includes an adjusting seat 601. The adjusting seat 601 is fixedly connected to the bottom end of the rotating shaft 3. The grinding head 4 is fixedly connected to the bottom end of the adjusting seat 601. Activity grooves 602 are symmetrically formed in the outer wall of the adjusting seat 601. An activity frame 603 is slidably connected to the inner wall of the activity groove 602. An activity seat 604 is fixedly connected to the outer wall of the activity frame 603. A tooth block 605 is fixedly connected to the side of the outer wall of the activity frame 603 away from the activity seat 604. Tooth plates 606 are symmetrically and slidably connected inside the adjusting seat 601. A first spring 607 is connected between the two tooth plates 606. A displacement seat 608 is fixedly connected to the top end of the tooth plate 606. The displacement seat 608 extends out of the adjusting seat 601. The sandpaper 5 is fixed to the outer wall of the activity seat 604 through a clamping mechanism 7. The adjusting mechanism 6 further includes an arc groove 609. The arc groove 609 is formed inside the adjusting seat 601 and is located at the top end of the displacement seat 608. A transverse groove 610 is formed inside the adjusting seat 601 between the two arc grooves 609. A rotating disk 611 extending out of the displacement seat 608 is rotatably connected inside the displacement seat 608. The top end of the rotating disk 611 is flat and fixedly connected to a transverse plate 612. A connecting shaft 613 is fixedly connected to one end of the rotating disk 611. A rotating block 614 is fixedly connected to one end of the connecting shaft 613. A convex block 615 is fixedly connected to the top end of the rotating block 614.

[0021] In this embodiment: When grinding, the sandpaper 5 is cut into long strips. Through the cooperation of the parts in the clamping mechanism 7, both ends of the sandpaper 5 are respectively fixed on the activity seat 604. The position of the activity seat 604 is adjusted. At this time, the activity frame 603 slides in the activity groove 602, so that the sandpaper 5 is closely attached to the bottom end of the grinding head 4. When adjusting, the rotating disk 611 does not enter the arc groove 609. At this time, the transverse plate 612 can slide along the transverse groove 610. After the adjustment is completed, the rotating block 614 is rotated to drive the connecting shaft 613 to rotate. The rotation of the connecting shaft 613 drives the rotating disk 611 to rotate. The rotating disk 611 rotates into the arc groove 609 to fix the position of the displacement seat 608. With the displacement seat 608 fixed, the tooth plate 606 and the tooth block 605 are always kept engaged, so as to fix the position of the activity seat 604.

[0022] After the sandpaper 5 at the bottom of the grinding head 4 is used up, rotate the rotating block 614 so that the convex block 615 faces directly upward. At this time, the rotating disk 611 rotates out of the arc-shaped groove 609, and the cross plate 612 is directly above. At this time, the position of the rotating block 614 can be adjusted, so that the unused part of the sandpaper 5 is moved to the bottom of the grinding head 4 for use, which is convenient for adjusting the position of the sandpaper 5.

[0023] Please refer specifically to Figures 7 to 10 The clamping mechanism 7 includes a jack 701. The jack 701 is opened on the outer wall of the sandpaper 5. A displacement plate 702 is slidably connected inside the movable seat 604. A threaded rod 703 is fixedly connected to the outer wall of the displacement plate 702. The threaded rod 703 extends to the outer wall of the movable seat 604. Inside the movable seat 604, spur gears 704 are rotatably connected on both sides of the displacement plate 702. Inside the movable seat 604, connecting rods 705 are slidably connected to the outer walls of the spur gears 704. One end of the connecting rod 705 extending out of the movable seat 604 is fixedly connected to a clamping plate 706. A threaded cylinder 707 is rotatably connected inside the clamping plate 706. One end of the threaded cylinder 707 is fixedly connected to a rotating column 708. A clamping block 709 extending out of the rotating column 708 is slidably connected inside the rotating column 708. A second spring 710 is connected between the clamping block 709 and the rotating column 708. A toothed ring 711 is fixedly connected to the outer wall of the clamping plate 706 on the outside of the rotating column 708.

[0024] In this embodiment: When fixing the sandpaper 5, a jack 701 matching the threaded rod 703 is opened on the sandpaper 5. Then, the sandpaper 5 is placed between the clamping plate 706 and the movable seat 604. Push the clamping plate 706 to displace towards the movable seat 604. The displacement of the clamping plate 706 drives the connecting rod 705 to displace. The displacement of the connecting rod 705 drives the spur gear 704 to rotate. The rotation of the spur gear 704 drives the displacement plate 702 to displace. The displacement of the displacement plate 702 drives the threaded rod 703 to displace. The threaded rod 703 displaces out of the movable seat 604 and inserts into the jack 701; until the threaded rod 703 contacts the inner wall of the threaded cylinder 707. Then, rotate the rotating column 708. The rotation of the rotating column 708 drives the threaded cylinder 707 to rotate. The rotation of the threaded cylinder 707 connects the threaded rod 703 into the inner wall of the threaded cylinder 707. The clamping plate 706 displaces towards the movable seat 604 to clamp the sandpaper 5. At the same time, the clamping block 709 is engaged with the toothed ring 711 under the elastic force of the second spring 710, so that the rotating column 708 can only rotate in one direction, improving the firmness of the connection between the threaded cylinder 707 and the threaded rod 703; when separating, push the clamping block 709 to displace and separate from the toothed ring 711. Then, rotate the rotating column 708 to drive the threaded cylinder 707 to rotate, so that the threaded rod 703 moves out of the threaded cylinder 707. Push the clamping plate 706 away from the movable seat 604 to loosen the sandpaper 5.

[0025] The strip-shaped sandpaper 5 is closely attached to the bottom end of the grinding head 4. The two ends of the sandpaper 5 are respectively fixed on two movable seats 604. By adjusting the positions of the two movable seats 604, the position of the sandpaper 5 is adjusted. Thus, after the sandpaper 5 at the bottom end of the grinding head 4 is used up, the unused part of the sandpaper 5 is moved to the bottom end of the grinding head 4 for use, which can reduce the frequency of replacing the sandpaper 5, improve the grinding efficiency of the mold, and facilitate the grinding of the mold.

[0026] Please refer specifically to Figures 2 to 6 , the outer wall of the movable frame 603 fits with the inner wall of the movable groove 602. The outer wall of the toothed plate 606 is provided with a first tooth groove, and one end of the tooth block 605 is engaged with the first tooth groove.

[0027] In this embodiment: By adjusting the position of the movable seat 604, the movable frame 603 slides in the movable groove 602 at this time.

[0028] Please refer specifically to Figures 2 to 6 , the inner wall of the arc-shaped groove 609 fits with the outer wall of the rotating disk 611, and the inner wall of the horizontal groove 610 fits with the outer wall of the horizontal plate 612.

[0029] In this embodiment: Rotate the rotating block 614 so that the convex block 615 faces directly upward. At this time, the rotating disk 611 rotates out of the arc-shaped groove 609, and the horizontal plate 612 is directly above. The horizontal plate 612 can slide along the horizontal groove 610. At this time, the position of the rotating block 614 can be adjusted.

[0030] Please refer specifically to Figures 2 to 6 , the convex block 615 and the horizontal plate 612 face the same direction, that is, the convex block 615 and the horizontal plate 612 are located on the same side of the connecting shaft (613) and are arranged collinearly.

[0031] In this embodiment: The position of the horizontal plate 612 is judged by the position of the convex block 615. Rotate the rotating block 614 to drive the convex block 615 to face directly upward, so that the horizontal plate 612 faces directly upward.

[0032] Please refer specifically to Figures 7 to 10 , the inner wall of the jack 701 fits with the outer wall of the threaded rod 703.

[0033] In this embodiment: The displacement of the displacement plate 702 drives the threaded rod 703 to displace. The threaded rod 703 displaces out of the movable seat 604 and inserts into the jack 701.

[0034] Please refer specifically to Figures 7 to 10 , the outer walls of the displacement plate 702 and the connecting rod 705 are both provided with second tooth grooves, and the second tooth grooves are engaged with the spur gear 704.

[0035] In this embodiment: Push the clamping plate 706 to displace towards the movable seat 604. The displacement of the clamping plate 706 drives the connecting rod 705 to displace. The displacement of the connecting rod 705 drives the spur gear 704 to rotate. The rotation of the spur gear 704 drives the displacement plate 702 to displace.

[0036] Please refer specifically to Figures 7 to 10 , the inner wall of the threaded cylinder 707 is provided with internal threads, and the internal threads are matched with the threaded rod 703.

[0037] In this embodiment: Rotate the threaded cylinder 707 to connect the threaded rod 703 into the inner wall of the threaded cylinder 707. The clamping plate 706 displaces towards the movable seat 604 to clamp the sandpaper 5.

[0038] Please refer specifically to Figures 7 to 10 , the inner wall of the toothed ring 711 is provided with ratchet teeth, and one end of the latch 709 is engaged with the ratchet teeth.

[0039] In this embodiment: The latch 709 is engaged with the toothed ring 711 under the elastic force of the second spring 710, so that the rotating column 708 can only rotate in one direction, improving the firmness of the connection between the threaded cylinder 707 and the threaded rod 703.

[0040] The above-mentioned are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A grinding and polishing device for mold processing, comprising an electric grinder body (1), a top end of the electric grinder body (1) being fixedly connected to a connecting line (2), an output end of the electric grinder body (1) being connected to a rotating shaft (3), a grinding head (4) being arranged below the rotating shaft (3), characterized in that: A long strip of sandpaper (5) is arranged at the bottom end of the grinding head (4), and the position of the sandpaper (5) is adjusted by an adjusting mechanism (6). The adjusting mechanism (6) comprises an adjusting seat (601), and the adjusting seat (601) is fixedly connected to the bottom end of the rotating shaft (3). The grinding head (4) is fixedly connected to the bottom end of the adjusting seat (601). The outer wall of the adjusting seat (601) is symmetrically provided with movable grooves (602). The inner wall of the movable groove (602) is slidably connected to a movable frame (603). The outer wall of the movable frame (603) is fixedly connected to the bottom end of the rotating shaft (3). A movable seat (604) is fixedly connected thereto; a tooth block (605) is fixedly connected to the outer wall of the movable frame (603) at a side away from the movable seat (604); a tooth plate (606) is symmetrically slidably connected to the inside of the adjustment seat (601); a first spring (607) is connected between the two tooth plates (606); a displacement seat (608) is fixedly connected to the top of the tooth plate (606); the displacement seat (608) extends out of the adjustment seat (601); and the sandpaper (5) is fixed to the outer wall of the movable seat (604) by a clamping mechanism (7).

2. A grinding and polishing device for mold processing according to claim 1, characterized in that: The adjustment mechanism (6) further comprises an arc groove (609), wherein the arc groove (609) is provided inside the adjustment seat (601) and is located at the top end of the displacement seat (608); a transverse groove (610) is provided inside the adjustment seat (601) and is located between the two arc grooves (609); a rotating disk (611) extending from the displacement seat (608) is rotatably connected inside the displacement seat (608); the top end of the rotating disk (611) is flat and fixedly connected to a transverse plate (612); one end of the rotating disk (611) is fixedly connected to a connecting shaft (613); one end of the connecting shaft (613) is fixedly connected to a rotating block (614); and the top end of the rotating block (614) is fixedly connected to a protrusion (615).

3. A grinding and polishing device for mold processing according to claim 2, characterized in that: The clamping mechanism (7) comprises a socket (701), the socket (701) being provided on the outer wall of the sandpaper (5), the interior of the movable seat (604) being slidably connected to a displacement plate (702), the outer wall of the displacement plate (702) being fixedly connected to a threaded rod (703), the threaded rod (703) extending to the outer wall of the movable seat (604), the interior of the movable seat (604) being located on both sides of the displacement plate (702) being rotatably connected to spur gears (704), the interior of the movable seat (604) being located on the outer wall of the spur gear (704) being slidably connected to a connecting rod (705). One end of the connecting rod (705) extending out of the movable seat (604) is fixedly connected to a clamp (706), the inside of the clamp (706) is rotatably connected to a threaded tube (707), one end of the threaded tube (707) is fixedly connected to a rotating column (708), the inside of the rotating column (708) is slidably connected to a clamping block (709) extending out of the rotating column (708), a second spring (710) is connected between the clamping block (709) and the rotating column (708), and the outer wall of the clamp (706) is located on the outside of the rotating column (708) and is fixedly connected to a gear ring (711).

4. A grinding and polishing device for mold processing according to claim 2, characterized in that: The outer wall of the movable frame (603) is in contact with the inner wall of the movable groove (602); the outer wall of the tooth plate (606) is provided with a first tooth groove; and one end of the tooth block (605) is engaged with the first tooth groove.

5. A grinding and polishing device for mold processing according to claim 2, characterized in that: The inner wall of the arc-shaped groove (609) fits with the outer wall of the rotating disk (611), and the inner wall of the horizontal groove (610) fits with the outer wall of the horizontal plate (612).

6. A grinding and polishing device for mold processing according to claim 2, characterized in that: The protrusion (615) and the transverse plate (612) have the same orientation.

7. A grinding and polishing device for mold processing according to claim 3, characterized in that: The inner wall of the insertion hole (701) fits the outer wall of the threaded rod (703).

8. A grinding and polishing device for mold processing according to claim 3, characterized in that: The outer walls of the displacement plate (702) and the connecting rod (705) are both provided with second tooth grooves, and the second tooth grooves are meshed with the spur gear (704).

9. A grinding and polishing device for mold processing according to claim 3, characterized in that: The inner wall of the threaded barrel (707) is provided with an internal thread, and the internal thread matches the threaded rod (703).

10. A grinding and polishing device for mold processing according to claim 3, characterized in that: The inner wall of the toothed ring (711) is provided with ratchet teeth, and one end of the clamping block (709) is engaged with the ratchet teeth.

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