Handheld polishing device for mold manufacturing

Abstract

The utility model discloses a handheld polishing device for mould manufacturing, which comprises a handheld polishing machine body and a protective cover, a handle is fixedly mounted at the rear end of the handheld polishing machine body, a driver shell is arranged at the front end of the handheld polishing machine body, and a transmission shaft rod is fixedly connected to the rotating part of the driver shell. A grinding piece is installed at the position, close to the upper end, of the transmission shaft rod, a lifting structure is arranged on the upper surface of the driver shell, and the lifting structure comprises a lifting base, a fixing block, a connecting rod, a first cylindrical groove, a connecting plate, a rectangular groove, a reset spring, a circular guide rod, an annular sliding groove, a circular clamping block, a circular clamping groove, a circular hole, a lifting barrel and a second cylindrical groove. And a lifting seat is fixedly mounted on the upper surface of the driver shell. According to the handheld polishing device for mold manufacturing, the distance between the protective cover and the driver shell can be shortened without rotating bolts on the outer sides of the three spring rods, and the polishing piece is exposed.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing devices, in particular to a hand-held polishing device for mold manufacturing. Background Art

[0002] A mold is a variety of molds and tools used in industrial production for injection molding, blow molding, extrusion, die casting, forging, smelting, stamping, etc. to obtain the required products. A mold is a tool for making molded articles. This tool is composed of various parts. Different molds are composed of different parts. It mainly realizes the processing of the article's outer shape through the change of the physical state of the molded material. In the production and manufacturing process of molds, in order to improve the appearance beauty of the molds and improve the surface wear resistance, a hand-held polishing device needs to be used for polishing. For example, a hand-held polishing device with easily replaceable grinding discs with the publication number CN218137095U includes a machine body, a transmission case, and a protection component. One end of the outer part of the machine body is provided with a transmission case, and a protection component is arranged on one side of the upper end of the transmission case. The protection component includes a disc, a protective cover, and a spring rod. The protective cover is arranged on the outer side of the disc, and spring rods are arranged around the inner part of the disc. The transmission case includes a driven wheel, a transmission shaft rod, and a driving wheel. For this hand-held polishing device with easily replaceable grinding discs, by using the protective cover with a notch structure, on the one hand, it is convenient for polishing operations while protecting the grinding disc, and on the other hand, through the spring rod, the protective cover can be pressed down, so that the grinding disc is separated from the protection of the protective cover, which is convenient for installing the grinding disc. In addition, the spring rod can be fixed by an external nut, so that the protective cover can be in a relatively stable state for better protection operations; when replacing the grinding disc, it is necessary to rotate the bolts on the outer sides of the three spring rods to reduce the distance between the protective cover and the transmission case, expose the grinding disc, and then replace the grinding disc. This method is time-consuming and laborious and relatively troublesome. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide a hand-held polishing device for mold manufacturing, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A hand-held polishing device for mold manufacturing includes a hand-held polishing machine body and a protective cover. A handle is fixedly installed at the rear end of the hand-held polishing machine body. A transmission case is arranged at the front end of the hand-held polishing machine body. A transmission shaft rod is fixedly connected to the rotating part of the transmission case. A grinding disc is installed near the upper end of the transmission shaft rod. A lifting structure is arranged on the upper surface of the transmission case.

[0006] Preferably, the lifting structure includes a lifting seat, a fixing block, a connecting rod, a first cylindrical groove, a connecting plate, a rectangular groove, a return spring, a circular guide rod, an annular sliding groove, a circular clamping block, a circular clamping groove, a circular hole, a lifting cylinder, and a second cylindrical groove.

[0007] Preferably, a lifting seat is fixedly installed on the upper surface of the transmission case. A second cylindrical groove is formed in the middle of the upper surface of the lifting seat. The transmission shaft rod passes through the second cylindrical groove. An annular sliding groove is formed in the upper surface of the lifting seat.

[0008] Preferably, a lifting cylinder is slidably installed in the annular sliding groove. A protective cover is fixedly installed at the upper end of the lifting cylinder. Circular clamping grooves are formed at both ends of the lifting cylinder near the lower end. First cylindrical grooves are formed at both ends of the upper surface of the lifting seat near the lower end.

[0009] Preferably, a connecting rod is slidably installed in the first cylindrical groove. The other end of the connecting rod is fixedly installed with a fixing block. A rectangular groove is formed at one end of the first cylindrical groove inside the lifting seat. Circular guide rods are fixedly installed in the middle of both ends of the rectangular groove.

[0010] Preferably, a connecting plate is slidably installed on the outer surface of the circular guide rod. A return spring is sleeved on one end of the connecting plate on the outer surface of the circular guide rod. The other end of the connecting plate is fixedly installed with a connecting rod near the lower end. A circular clamping block is fixedly installed near the upper end of the other end surface of the connecting plate. A circular hole is formed near the upper end of the other end surface of the rectangular groove.

[0011] Compared with the prior art, the present utility model has the following beneficial effects:

[0012] In the present utility model, through the provided lifting structure, when it is necessary to reduce the distance between the protective cover and the transmission case when replacing the grinding disc, the fixing block can be pressed inward simultaneously, so that the connecting plate slides towards the middle on the outer surface of the circular guide rod and compresses the return spring, driving the circular clamping block fixedly installed near the upper end of the other end surface of the connecting plate to retract into the circular hole and disengage from the circular clamping grooves formed at both ends of the lifting cylinder near the lower end. At this time, under the action of gravity, the lifting cylinder will slide downward in the annular sliding groove, exposing the grinding disc, without the need to rotate the bolts outside the three spring rods to reduce the distance between the protective cover and the transmission case and expose the grinding disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of a hand-held polishing device for mold manufacturing according to the present utility model;

[0014] Figure 2 is a sectional view of a hand-held polishing device for mold manufacturing according to the present utility model;

[0015] Figure 3For a hand-held polishing device for mold manufacturing of the present utility model Figure 2 The enlarged view of part A in

[0016] In the figure: 1. Hand-held polishing machine body; 2. Handle; 3. Transmission case; 301. Transmission shaft rod; 302. Grinding disc; 4. Protective cover; 5. Lifting structure; 501. Lifting seat; 502. Fixed block; 503. Connecting rod; 504. First cylindrical groove; 505. Connecting plate; 506. Rectangular groove; 507. Return spring; 508. Circular guide rod; 509. Annular sliding groove; 510. Circular clamping block; 511. Circular clamping groove; 512. Round hole; 513. Lifting cylinder; 514. Second cylindrical groove. Specific embodiments

[0017] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] As Figures 1-3 shown, a hand-held polishing device for mold manufacturing includes a hand-held polishing machine body 1 and a protective cover 4. A handle 2 is fixedly installed at the rear end of the hand-held polishing machine body 1, a transmission case 3 is arranged at the front end of the hand-held polishing machine body 1, a transmission shaft rod 301 is fixedly connected to the rotating part of the transmission case 3, a grinding disc 302 is installed near the upper end of the transmission shaft rod 301, and a lifting structure 5 is arranged on the upper surface of the transmission case 3;

[0019] The lifting structure 5 includes a lifting seat 501, a fixing block 502, a connecting rod 503, a first cylindrical groove 504, a connecting plate 505, a rectangular groove 506, a return spring 507, a circular guide rod 508, an annular sliding groove 509, a circular clamping block 510, a circular clamping groove 511, a circular hole 512, a lifting cylinder 513, and a second cylindrical groove 514; the upper surface of the transmission housing 3 is fixedly installed with a lifting seat 501, the middle of the upper surface of the lifting seat 501 is provided with a second cylindrical groove 514, the transmission shaft rod 301 passes through the second cylindrical groove 514, and the upper surface of the lifting seat 501 is provided with an annular sliding groove 509; an annular sliding groove 509 is internally slidably installed with a lifting cylinder 513, the upper end of the lifting cylinder 513 is fixedly installed with a protective cover 4, both ends of the lifting cylinder 513 near the lower end are provided with circular clamping grooves 511, and both ends of the surface of the lifting seat 501 near the lower end are provided with first cylindrical grooves 504; a connecting rod 503 is slidably installed in the first cylindrical groove 504, the other end of the connecting rod 503 is fixedly installed with a fixing block 502, a rectangular groove 506 is opened at one end of the first cylindrical groove 504 inside the lifting seat 501, and circular guide rods 508 are fixedly installed in the middle of both ends of the surface of the rectangular groove 506; a connecting plate 505 is slidably installed on the outer surface of the circular guide rod 508, a return spring 507 is sleeved on one end of the connecting plate 505 on the outer surface of the circular guide rod 508, the other end of the connecting plate 505 near the lower end is fixedly installed with a connecting rod 503, the other end of the connecting plate 505 near the upper end is fixedly installed with a circular clamping block 510, and a circular hole 512 is opened at the upper end of the other end of the rectangular groove 506. When it is necessary to reduce the distance between the protective cover 4 and the transmission housing 3 when replacing the grinding disc 302, the fixing block 502 can be pressed inward at the same time, so that the connecting plate 505 slides toward the middle on the outer surface of the circular guide rod 508 and compresses the return spring 507, driving the circular clamping block 510 fixedly installed near the upper end of the other end of the connecting plate 505 to retract into the circular hole 512 and disengage from the circular clamping grooves 511 opened at both ends of the lifting cylinder 513 near the lower end. At this time, under the action of gravity, the lifting cylinder 513 will slide downward in the annular sliding groove 511, exposing the grinding disc 302. It is not necessary to rotate the bolts outside the three spring rods to reduce the distance between the protective cover and the transmission housing and expose the grinding disc.

[0020] It should be noted that the present utility model is a hand-held polishing device for mold manufacturing. When it is necessary to reduce the distance between the protective cover 4 and the actuator housing 3 when replacing the grinding disc 302, first, it is necessary to simultaneously press the fixing block 502 inward, so that the fixing block 502 drives the connecting rod 503 to slide toward the middle in the first cylindrical groove 504, drives the connecting plate 505 fixedly installed at one end of the connecting rod 503 to slide toward the middle on the outer surface of the circular guide rod 508, and compresses the return spring 507, so that the connecting plate 505 drives the circular clamping block 510 fixedly installed near the upper end of the other end surface to disengage from the circular clamping grooves 511 opened at both ends near the lower end of the lifting cylinder 513. At this time, under the action of gravity, the lifting cylinder 513 will slide downward in the annular sliding groove 511, exposing the grinding disc 302 and making the grinding disc exposed.

[0021] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A handheld polishing device for mold manufacturing, characterized in that: The handheld polisher comprises a handheld polisher body (1) and a protective cover (4). A handle (2) is fixedly mounted on the rear end of the handheld polisher body (1). A transmission housing (3) is arranged on the front end of the handheld polisher body (1). A transmission shaft (301) is fixedly connected to the rotating part of the transmission housing (3). A grinding sheet (302) is installed near the upper end of the transmission shaft (301). A lifting structure (5) is arranged on the upper surface of the transmission housing (3). The lifting structure (5) comprises a lifting seat (501), a fixing block (502), a connecting rod (503), a No. 1 cylindrical groove (504), a connecting rod (505), a connecting rod (506), a connecting rod (507), a connecting rod (508), a connecting rod (509), a connecting rod (510), a connecting rod (511), a connecting rod (512), a connecting rod (513), a connecting rod (514), a connecting rod (515), a connecting rod (516), a connecting rod (517), a connecting rod (518), a connecting rod (519), a connecting rod (520), a connecting rod (521), a connecting rod (522), a connecting rod (523), a connecting rod (524), a connecting rod (525), a connecting rod (526), ​​a connecting rod (527), a connecting rod (528), a connecting rod (529), a connecting rod (53 ... A plate (505), a rectangular groove (506), a return spring (507), a circular guide rod (508), an annular slide groove (509), a circular block (510), a circular groove (511), a circular hole (512), a lifting cylinder (513), and a No. 2 cylindrical groove (514); a lifting seat (501) is fixedly mounted on the upper surface of the transmission housing (3); a No. 2 cylindrical groove (514) is provided in the middle of the upper surface of the lifting seat (501); the transmission shaft (301) passes through the No. 2 cylindrical groove (514); and an annular slide groove (509) is provided on the upper surface of the lifting seat (501). A lifting cylinder (513) is slidably installed in the annular sliding groove (509), a protective cover (4) is fixedly installed on the upper end of the lifting cylinder (513), circular grooves (511) are provided at both ends of the lifting cylinder (513) near the lower end, and a No. 1 cylindrical groove (504) is provided on both ends of the surface of the lifting seat (501) near the lower end, a connecting rod (503) is slidably installed in the No. 1 cylindrical groove (504), and a fixing block (502) is fixedly installed on the other end of the connecting rod (503), and a rectangular groove is provided at one end of the No. 1 cylindrical groove (504) inside the lifting seat (501). (506), a circular guide rod (508) is fixedly installed in the middle of the two end surfaces of the rectangular groove (506), a connecting plate (505) is slidably installed on the outer surface of the circular guide rod (508), a return spring (507) is sleeved on one end of the connecting plate (505) on the outer surface of the circular guide rod (508), a connecting rod (503) is fixedly installed on the other end surface of the connecting plate (505) near the lower end, a circular clamping block (510) is fixedly installed on the other end surface of the connecting plate (505) near the upper end, and a circular hole (512) is opened on the other end surface of the rectangular groove (506) near the upper end.

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