Grinding and polishing machine for mold production

Abstract

The utility model relates to the technical field of mold production, and discloses a mold production grinding and polishing machine which comprises a motor and a connecting shaft, the connecting shaft is fixedly connected with a power shaft of the motor through a coupling piece, a connecting block is welded to the bottom end of the connecting shaft, and threaded rods movably penetrate through the two sides of the connecting block; the outer surfaces of the two threaded rods are each sleeved with a first nut and a second nut in a threaded mode, polishing heads are fixedly installed at one ends of the two threaded rods, a sliding groove is formed in the inner top wall of the connecting block, two sliding blocks are arranged in the sliding groove in a sliding mode, and the two sliding blocks are welded to the other ends of the two threaded rods correspondingly. According to the scheme, when the two polishing heads make contact with a circular cavity of a mold, a motor is supported and vertically ascends and descends in a reciprocating mode, meanwhile, a power shaft of the motor drives a connecting shaft, a connecting block, a threaded rod and the two polishing heads to rotate, and the two polishing heads simultaneously ascend and descend in a reciprocating mode in the rotating process; and the circular cavity of the mold can be ground and polished.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of mold production, in particular to a mold production grinding and polishing machine. BACKGROUND

[0002] Various molds and tools used in industrial production to obtain required products by means of injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods, and the smoothness of the mold cavity directly affects the surface quality of the product, so polishing is the last key process for the production and maintenance of the mold, especially the mold cavity of a circular shape, which is more difficult to polish. At present, the polishing of the mold cavity mainly relies on manual polishing, and polishers use files, sandpaper or oil stones to finely grind the mold, but the area of the inner wall of the cavity polished at a time is small, resulting in low polishing efficiency. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the above-mentioned problem that the area of the inner wall of the cavity polished at a time is small, resulting in low polishing efficiency, the application provides a mold production grinding and polishing machine.

[0004] The mold production grinding and polishing machine provided by the application adopts the following technical scheme:

[0005] A mold production grinding and polishing machine, comprising a motor and a connecting shaft, the connecting shaft is fixedly connected with the power shaft of the motor through a shaft coupling, the bottom end of the connecting shaft is welded with a connecting block, the two sides of the connecting block are movably penetrated with threaded rods, the outer surfaces of the two threaded rods are threadedly sleeved with a nut one and a nut two, the ends of the two threaded rods are fixedly installed with polishing heads, the inner top wall of the connecting block is provided with a sliding groove, two sliding blocks are slidably arranged in the sliding groove, and the other ends of the two threaded rods are welded with the two sliding blocks.

[0006] Preferably, the shaft coupling is composed of a connecting head and an internal hexagonal bolt, the connecting head is movably sleeved at the end of the power shaft of the motor, the connecting shaft is fixedly inserted into the internal connecting head, and the internal hexagonal bolt is threadedly penetrated through the connecting head and is threadedly connected with the power shaft of the motor.

[0007] Preferably, the polishing head is composed of a bayonet and a fan-shaped fine grinding wheel block, the bayonet is welded at one end of the threaded rod, and the fan-shaped fine grinding wheel block is bonded in the internal bayonet through strong glue.

[0008] Preferably, a handle is arranged above the motor, the two ends of the handle are threadedly penetrated with external hexagonal bolts, and the two external hexagonal bolts are threadedly connected with the shell of the motor.

[0009] In summary, the present application has the following beneficial technical effects: when the two polishing heads contact the circular cavity of the mold, the motor is supported and vertically reciprocatingly lifted, and the power shaft of the motor drives the connecting shaft, the connecting block, the threaded rod and the two polishing heads to rotate, the two polishing heads are reciprocatingly lifted during rotation, and the circular cavity of the mold can be polished; compared with the prior art, the contact area with the circular cavity of the mold is large, and the polishing efficiency of the circular cavity of the mold is high. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is the overall structure schematic diagram of the application embodiment one.

[0011] Figure 2 is the split structure schematic diagram of the motor, the connecting head and the inner hexagonal bolt in the application embodiment one.

[0012] Figure 3 is the partial structure schematic diagram in the application embodiment one.

[0013] Reference signs: 1, motor; 21, connecting shaft; 22, connecting block; 23, threaded rod; 24, nut one; 25, nut two; 26, polishing head; 27, sliding block; 201, bayonet; 202, fan-shaped fine grinding block; 3, shaft coupling; 31, connecting head; 32, inner hexagonal bolt; 41, handle; 42, outer hexagonal bolt. DETAILED DESCRIPTION

[0014] The following will be described in detail in combination with the accompanying drawings. Figure 1 - the accompanying drawings Figure 3 The present application will be further described in detail.

[0015] Embodiment one:

[0016] A mold production polishing and polishing machine, referring to Figures 1-3, including the motor 1 and the connecting shaft 21, the motor 1 is electrically connected with the external power supply through the external switch, the motor 1 is preferably YE2132M-4 type, the upper of the motor 1 is placed with the handle 41, both ends of the handle 41 are threaded with the outer hexagonal bolt 42, both outer hexagonal bolts 42 are in threaded connection with the shell of the motor 1, the handle 41 and the outer shell of the motor 1 can be connected, and the +2 can be fixed by holding the handle 41, the connecting shaft 21 is fixedly connected with the power shaft of the motor 1 through the shaft coupling 3, the shaft coupling 3 is composed of the connecting head 31 and the inner hexagonal bolt 32, the connecting head 31 is movably sleeved on the end of the power shaft of the motor 1, the connecting shaft 21 is fixedly inserted into the connecting head 31, the inner hexagonal bolt 32 is threaded through the connecting head 31, and the inner hexagonal bolt 32 is in threaded connection with the power shaft of the motor 1, so that the connecting shaft 21 and the power shaft of the motor 1 are connected and fixed, the bottom end of the connecting shaft 21 is welded with the connecting block 22, both sides of the connecting block 22 are movably penetrated with the threaded rods 23, the threaded rods 23 can be self-locked in threaded connection, and the self-locking condition of the threaded connection depends on the spiral angle, the friction coefficient and the load. The self-locking condition of the threaded connection can be calculated by the following formula: self-locking condition = friction coefficient x tan(spiral angle) >= 1. When the condition is met, the threaded connection is self-locked. The above-mentioned contents are all prior art, and in actual application, the corresponding self-locking angle can be set according to the friction coefficient of the material, which will not be described here, the outer surfaces of the two threaded rods 23 are threaded with a nut one 24 and a nut two 25, one ends of the two threaded rods 23 are fixedly provided with the polishing heads 26, a sliding groove is formed in the inner top wall of the connecting block 22, two sliding blocks 27 are slidably arranged in the sliding groove, the two sliding blocks 27 are welded to the other ends of the two threaded rods 23, and the two sliding blocks 27 can be used for limiting the two threaded rods 23 to prevent the two threaded rods 23 from rotating, then the connecting block 22 is inserted into the circular cavity of the mold, if the two polishing heads 26 are too far away from the side wall of the circular cavity, the two polishing heads 26 can be brought away from each other by pulling the two threaded rods 23, so that the two polishing heads 26 can be in contact with the side wall of the circular cavity, then the two nuts one 24 and the two nuts two 25 are rotated to make the two nuts one 24 and the two nuts two 25 contact with the two outer sides and the two inner side walls of the connecting block 22 respectively, so as to fix the two threaded rods 23, then the motor 1 is held and vertically reciprocatingly lifted by holding the handle 41, when the two polishing heads 26 contact with the circular cavity of the mold, the motor 1 is controlled to work by using the external switch, the power shaft of the motor 1 drives the connecting shaft 21, the connecting block 22, the threaded rods 23 and the two polishing heads 26 to rotate, and the two polishing heads 26 reciprocatingly lift in the process of rotating, so that the circular cavity of the mold can be polished.

[0017] Referring to Figure 3The polishing head 26 is composed of a socket 201 and a fan-shaped fine abrasive block 202. The socket 201 is welded to one end of the threaded rod 23, and the fan-shaped fine abrasive block 202 is bonded to the inside of the socket 201 by strong glue. The socket 201 can fix the fan-shaped fine abrasive block 202 to one end of the threaded rod 23, and the fan-shaped fine abrasive block 202 is bonded to the socket 201 by strong glue. When the fan-shaped fine abrasive block 202 is damaged and cannot be used, it can be easily replaced.

[0018] The above describes an exemplary embodiment of a mold production polishing and grinding machine provided by the present disclosure with reference to a preferred embodiment, however, those skilled in the art can understand that various modifications and changes can be made to the above specific embodiments without departing from the concept of the present disclosure, and various technical features and structures proposed by the present disclosure can be combined without exceeding the protection scope of the present disclosure, and the protection scope of the present disclosure is determined by the appended claims.

Claims

1. A mold production polishing machine comprising a motor (1) and a connecting shaft (21), characterized in that, The connecting shaft (21) is fixedly connected with the power shaft of the motor (1) through the shaft coupling (3), the bottom end of the connecting shaft (21) is welded with a connecting block (22), the two sides of the connecting block (22) are movably penetrated with threaded rods (23), the outer surfaces of the two threaded rods (23) are threadedly sleeved with a nut one (24) and a nut two (25), one end of the two threaded rods (23) is fixedly installed with a polishing head (26), the inner top wall of the connecting block (22) is provided with a sliding groove, two sliding blocks (27) are slidably arranged in the sliding groove, and the other end of the two threaded rods (23) is welded with the two sliding blocks (27) respectively.

2. The mold production polishing machine according to claim 1, characterized by: The shaft coupling (3) is composed of a connecting head (31) and an inner hexagonal bolt (32), the connecting head (31) is movably sleeved at the end of the power shaft of the motor (1), the connecting shaft (21) is fixedly inserted into the connecting head (31), and the inner hexagonal bolt (32) is threadedly penetrated through the connecting head (31) and is in threaded connection with the power shaft of the motor (1).

3. The mold production polishing machine according to claim 1, characterized by: The polishing head (26) is composed of a bayonet (201) and a fan-shaped fine grinding wheel block (202), the bayonet (201) is welded at one end of the threaded rod (23), and the fan-shaped fine grinding wheel block (202) is bonded in the bayonet (201) by strong glue.

4. The mold production polishing machine according to claim 1, characterized by: A handle (41) is arranged above the motor (1), outer hexagonal bolts (42) are threadedly penetrated through the two ends of the handle (41), and the two outer hexagonal bolts (42) are in threaded connection with the shell of the motor (1).

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