CN212021491U - Take covering injection mold with automatically cropped - Google Patents

Abstract

An injection mould with automatic shearing skin comprises an upper compound plate and a lower compound plate, wherein a cavity plate and a cavity are arranged below the upper compound plate, a runner plate and a sprue are arranged on the lower compound plate, a hot runner is arranged in the runner plate, a mould foot, a lower top plate and an upper top plate are arranged on the runner plate, a core plate and a mould core are arranged on the mould foot, an injection-molded plastic part with skin is arranged between the mould core and the cavity, a thimble is connected on the upper top plate, the thimble penetrates through the mould core to be contacted with the back surface of the plastic part with skin, an upper clearance groove is arranged in the cavity plate along the periphery of the cavity, a matched upper shearing insert is arranged in the upper clearance groove, a shearing blade is arranged on the upper shearing insert along the periphery of the cavity, a lower clearance groove is arranged in the mould core plate along the periphery of the mould core, a matched lower shearing insert is arranged in the lower clearance groove, a shearing blade is arranged on the periphery of the mould core, and when the mould core plate works, the blade of the upper shearing, and cutting off the skin rim charge with the skin plastic part.

Description

Take covering injection mold with automatically cropped

Technical Field

The utility model relates to a take covering injection mold with automatic cutout belongs to the injection mold field.

Background

Adopt injection mold to produce plastic products, for example, automobile decoration etc., in order to make the decoration more pleasing to the eye, go up the grade, set up covering (cloth, cladding etc.) on the decoration, traditional covering is laid on the decoration through artifical manual, and is inefficient, and the labor cost is high, therefore, the injection mold of automatic covering has been developed in recent years to someone, with covering and the integrative injection moulding of decoration, nevertheless receive injection mold processing technology's restriction, after covering decoration machine-shaping, the covering rim charge at decoration edge still need artifically to tailor, unable auto-shearing, influence production efficiency.

Disclosure of Invention

The utility model aims at overcoming prior art's shortcoming, providing a but self-cutting covering rim charge, simple structure, the cost is economized, efficient has self-cutting's area covering injection mold.

The utility model discloses take covering injection mold's technical scheme is with automatically cropped: the mold comprises an upper compound plate and a lower compound plate of a mold, wherein a cavity plate is arranged below the upper compound plate, a cavity is arranged in the cavity plate, a runner plate is arranged on the lower compound plate, a sprue is arranged in the lower compound plate, a hot runner is arranged in the runner plate, mold pins are arranged on the runner plate, a lower top plate and an upper top plate are arranged between the mold pins, a core plate is arranged on the mold pins, a core is arranged in the core plate, an injection-molded plastic part with skin is arranged between the core and the cavity, ejector pins are connected with the upper top plate and penetrate through the core to be contacted with the back of the plastic part with skin, the mold is characterized in that an upper clearance groove is arranged in the cavity plate along the periphery of the cavity, matched upper shearing inserts are arranged in the upper clearance groove, shearing blades are arranged in the upper shearing inserts along the periphery of the cavity, a lower clearance groove is arranged in the core plate along the periphery of the core, matched lower shearing inserts are arranged in the lower clearance groove along the periphery of, when the skin plastic part cutting device works, the shearing blade of the upper shearing insert is driven by power to shear the shearing blade on the lower shearing insert, so that the skin rim charge with the skin plastic part is cut off.

The utility model discloses a take covering injection mold with automatic cutout, the key feature is that it inserts to set up the shearing in the die cavity board, it inserts to set up the corresponding downcut in the core board, the upcut is inserted and is set up the shearing cutting edge, the downcut is inserted and is set up the shearing edge of a knife, after taking covering plastic part injection moulding, the mould is the die sinking earlier, owing to have, keep away empty recess down, the shearing cutting edge that the shearing was inserted is inserted to the downcut edge of a knife doing shearing action by power drive this moment, will take the covering rim charge of covering plastic part to cut away, the re-mould die sinking, will take the ejecting mould drawing of patterns of covering mould outside by the thimble, the covering rim charge that cuts away drops automatically. This scheme realizes the automatically cropped covering rim charge, need not the subsequent order manual processing, saves the cost of labor, improves production efficiency.

The utility model discloses a take covering injection mold with automatic cutout, the power that the shearing was inserted has a lot of concrete technical scheme on the drive, for example include and set up the shearing hydro-cylinder on the outer wall of cavity board wherein both sides, set up the connecting plate in the wherein both sides of inserting of shearing, outside the cavity board was stretched out to the connecting plate, the piston rod of shearing hydro-cylinder was connected on the connecting plate of stretching out the cavity board part, and it is steady to drive the action by the both sides hydro-cylinder, cuts reliably. The lower shearing insert and the core plate are provided with the buffer mechanism, the buffer mechanism comprises buffer screws which are uniformly distributed at the bottom of the lower shearing insert, buffer springs are arranged in the core plate corresponding to the buffer screws, the buffer springs slightly extend out of the surface of the core plate, the buffer screws are inserted into the buffer springs during shearing, and as the buffer springs slightly extend out of the surface of the core plate, screw heads are pressed on the buffer springs when the buffer screws are pressed down, so that the buffer effect can be effectively played, and the lower shearing insert and the core plate are prevented from being violently impacted.

Drawings

FIG. 1 is a schematic structural view of the injection mold with skin of the present invention with automatic cutting;

FIG. 2 is a schematic view of the assembly relationship between the cavity plate and the upper shear insert of the present invention;

fig. 3 is a schematic view of the core plate of the present invention with uniformly distributed buffer springs.

Detailed Description

The utility model relates to an injection mold with skin capable of automatically shearing, as shown in figures 1-3, comprising an upper compound plate 1 and a lower compound plate 2, a cavity plate 3 is arranged under the upper compound plate, a cavity 31 is arranged in the cavity plate 3, a runner plate 4 is arranged on the lower compound plate, a sprue 11 is arranged in the lower compound plate, a hot runner 12 is arranged in the runner plate, mold feet 5 are arranged on the runner plate, a lower top plate 6 and an upper top plate 7 are arranged between the mold feet, a core plate 8 is arranged on the mold feet, a core 81 is arranged in the core plate, an injection molding skin-equipped plastic part 9 is arranged between the core 81 and the cavity 31, a thimble 10 is connected on the upper top plate, the thimble passes through the core 81 to contact with the back of the skin-equipped plastic part 9, an upper clearance groove 15 is arranged along the periphery of the cavity 31 in the cavity plate 3, a matched upper shearing insert 16 is arranged in the upper clearance groove 15, the upper shearing insert 16 is provided with a cutting edge 17 along the periphery of the cavity 31, the lower clearance groove 18 is arranged in the core plate 8 along the periphery of the core 81, the lower shearing insert 19 matched with the lower clearance groove 18 is arranged in the lower clearance groove, the lower shearing insert 19 is provided with the shearing edge 20 along the periphery of the core 81, and when the core plate works, the shearing edge 17 of the upper shearing insert 16 is driven by power to shear the shearing edge 20 on the lower shearing insert 19, so that the skin rim charge with the skin plastic part 9 is cut off. The scheme is mainly characterized in that an upper shearing insert 16 is arranged in a cavity plate 3, a corresponding lower shearing insert 19 is arranged in a core plate 8, a shearing blade 17 is arranged on the upper shearing insert 16, a shearing blade 20 is arranged on the lower shearing insert 19, after the plastic part 9 with the skin is subjected to injection molding, the mold is not opened firstly, because of the upper and lower clearance grooves 15 and 18, the shearing blade 17 of the upper shearing insert 16 is driven by power to shear the shearing blade 20 on the lower shearing insert 19, the skin rim charge 91 with the skin plastic part 9 is cut off, then the mold is opened, the plastic part with the skin is ejected out of the mold by an ejector pin for demolding, and the cut skin rim charge automatically falls off. This scheme realizes the automatically cropped covering rim charge, need not the subsequent order manual processing, saves the cost of labor, improves production efficiency. The power for driving the upper shearing insert 16 has a plurality of specific technical schemes, for example, the power comprises that shearing oil cylinders 22 are arranged on the outer walls of two sides of the cavity plate 3, connecting plates 21 are arranged on two sides of the upper shearing insert 16, the connecting plates extend out of the cavity plate 3, piston rods 23 of the shearing oil cylinders 22 are connected to the connecting plates 21 extending out of the cavity plate, and the shearing oil cylinders are driven by the oil cylinders on two sides to operate stably and shear reliably. The core plate shearing machine is characterized in that a buffer mechanism is arranged between the lower shearing insert 19 and the core plate 8, the buffer mechanism comprises buffer screws 25 which are uniformly distributed at the bottom of the lower shearing insert 19, buffer springs 26 are arranged in the core plate 8 corresponding to the buffer screws 25, the buffer springs 26 slightly extend out of the surface of the core plate, the buffer screws 25 are inserted into the buffer springs 26 during shearing, and the buffer springs 26 slightly extend out of the surface of the core plate, so that screw heads are pressed on the buffer springs when the buffer screws are pressed down, the buffer effect can be effectively achieved, and severe impact between the lower shearing insert and the core plate is avoided.

Claims (3)

1. An injection mold with skin and automatic shearing function comprises an upper compound plate (1) and a lower compound plate (2) of the mold, a cavity plate (3) is arranged below the upper compound plate, a cavity (31) is arranged in the cavity plate (3), a runner plate (4) is arranged on the lower compound plate, a sprue (11) is arranged in the lower compound plate, a hot runner (12) is arranged in the runner plate, mold feet (5) are arranged on the runner plate, a lower top plate (6) and an upper top plate (7) are arranged between the mold feet, a core plate (8) is arranged on the mold feet, a core (81) is arranged in the core plate, an injection molding skin-equipped plastic part (9) is arranged between the core (81) and the cavity (31), a thimble (10) is connected on the upper top plate, the thimble penetrates through the core (81) to be contacted with the back of the skin-equipped plastic part (9), and is characterized in that an upper clearance groove (15) is arranged on the periphery along the cavity plate (3), and a matched upper shearing insert (16) is arranged in the upper clearance groove (, the upper shearing insert (16) is provided with a shearing blade (17) along the periphery of a cavity (31), a lower clearance groove (18) is arranged in a core plate (8) along the periphery of a core (81), a matched lower shearing insert (19) is arranged in the lower clearance groove (18), the lower shearing insert (19) is provided with a shearing blade (20) along the periphery of the core (81), and when the lower shearing insert works, the shearing blade (17) of the upper shearing insert (16) is driven by power to do shearing action on the shearing blade (20) on the lower shearing insert (19), so that the skin rim charge with the skin molding part (9) is cut off.

2. The skin-covered injection mold with automatic shearing function according to claim 1, wherein the power for driving the upper shearing insert (16) comprises a shearing cylinder (22) arranged on the outer wall of two sides of the cavity plate (3), a connecting plate (21) arranged on two sides of the upper shearing insert (16) and extending out of the cavity plate (3), and a piston rod (23) of the shearing cylinder (22) is connected to the connecting plate (21) extending out of the cavity plate.

3. The injection mold with skin for automatic cutting according to claim 1, characterized in that a buffer mechanism is arranged between the lower cutting insert (19) and the core plate (8), the buffer mechanism comprises buffer screws (25) uniformly distributed at the bottom of the lower cutting insert (19), buffer springs (26) are arranged in the core plate (8) corresponding to the buffer screws (25), the buffer springs (26) slightly extend out of the plate surface of the core plate, and the buffer screws (25) are inserted into the buffer springs (26) during cutting.

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