CN212554860U - Injection mold with back-off slider structure - Google Patents

Abstract

The utility model discloses an injection mold with a back-off slider structure, which comprises an upper mold and a lower mold, wherein the lower mold comprises an ejector plate, a plurality of ejector pins, a C plate, a B plate and an inner mold core; the mold further comprises an insert, wherein the insert is provided with an inner cavity, the insert is fixedly connected to the inner mold core, and the side surface of the insert is provided with a sliding block channel communicated with the inner cavity; the buckling position sliding block is connected with the sliding block channel in a sliding mode, an inverted buckle for product forming is arranged at the upper end of the buckling position sliding block, a first guide inclined plane is arranged at the lower end of the buckling position sliding block, the first guide inclined plane and the inverted buckle are located on the same side of the buckling position sliding block, and the first guide inclined plane inclines towards the inner cavity from bottom to top; the guide piece is fixedly connected to the plate C and provided with a second guide inclined plane, and the second guide inclined plane is tightly attached to the first guide inclined plane. In the mold opening process, the buckling position sliding block slides into the inner cavity under the action of the guide piece to be separated from the product buckling position, so that the product is successfully pushed out, and the product with limited inner space and deeper buckling position can be molded.

Description

Injection mold with back-off slider structure

Technical Field

The utility model relates to a mold design technical field, in particular to injection mold with back-off slider structure.

Background

The application of the injection mold is more and more extensive, and along with the generation and design of the injection mold, the application technology of the injection mold is also improved a lot. The forced demoulding of the mould means that a workpiece in the injection mould is provided with an inverted buckle, a special core-pulling mechanism is not adopted, but the workpiece is directly and forcibly ejected out of the mould, the inverted buckle is not large generally, and the material of the workpiece needs certain plasticity and toughness. The die lifter is also called a lifter and a lifter, is a mechanism for forming barbs in products in die design, and is suitable for simpler barb conditions. The existing mould with the deeper buckling position on the inner wall of the product generally adopts an inclined top to form a product structure and fix the product, but the inclined top has limited inner space of the product and reverse buckling positions on two sides, and the inclined top cannot be adopted under the condition that the reverse buckling positions are inclined, otherwise, two inclined tops can collide together when the product is ejected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve one of the technical problem that exists among the prior art at least, provide an injection mold with back-off slider structure, utilize the mold insert to drive the slider short distance and slide, the slider gets into to keep away and releases the work piece through secondary release mechanism after the vacancy, and the inside back-off framework of shaping product solves the limited and darker mould design problem of back-off position in product inner space.

According to the utility model discloses an injection mold with back-off slider structure, including the last mould and the lower mould of mutually supporting, the lower mould is including a plurality of thimbles, thimble board, C board, B board and interior mould benevolence, and is a plurality of the thimble by the thimble board promotes in order to release the shaping product, the C board is located the thimble board upside, the B board by the thimble board promotes, the B board is located the C board upside and with the C board is the contact connection, interior mould benevolence is fixed in the B board still includes: the insert is provided with an inner cavity, the insert is fixedly connected to the inner die core, and a sliding block channel communicated with the inner cavity is arranged on the side surface of the insert; the buckling position sliding block is connected to the sliding block channel in a sliding mode, an inverted buckle for product forming is arranged at the upper end of the buckling position sliding block, a first guide inclined plane is arranged at the lower end of the buckling position sliding block, the first guide inclined plane and the inverted buckle are located on the same side of the buckling position sliding block, and the first guide inclined plane inclines towards the inner cavity from bottom to top; the guide piece is fixedly connected to the plate C and provided with a second guide inclined plane, and the second guide inclined plane is tightly attached to the first guide inclined plane.

According to the utility model discloses injection mold with back-off slider structure has following beneficial effect at least: in the mold opening process, the plate B moves upwards, the insert drives the buckling slide block to move upwards, the buckling slide block moves towards the interior of the slide block channel under the action of the guide piece and the first guide inclined plane, the reverse buckle of the buckling slide block retracts into the slide block channel at the moment, and the ejector pin can push out a product; the reverse buckle on the workpiece is formed by buckling the reverse buckle on the position sliding block, the position sliding block is buckled in the die sinking process and is separated from the surface of the workpiece through the guide of the first guide inclined plane, so that the workpiece can be smoothly pushed out, the product with a deeper reverse buckle position can be formed, the position sliding block is buckled, the structure is simple, the production and the processing are easy, and the production cost is saved.

According to the utility model discloses a some embodiments, injection mold still includes secondary push mechanism, secondary push mechanism is including promoting piece, reset spring and promotion strip, promote a fixed connection in the thimble board, it just can bulge to promote a sliding connection in the B board the side of B board, reset spring connects promote the piece with between the B board, promote protruding the stretching of piece the part of the tip of B board by it promotes to promote the strip.

According to the utility model discloses a some embodiments, C board both sides difference fixedly connected with guide block, it is provided with fifth direction inclined plane to promote on the piece, be provided with sixth direction inclined plane on the guide block, it is relative to promote the piece when the guide block rises, sixth direction inclined plane is used for the drive to pressing of fifth direction inclined plane promote the piece and return and contract, it breaks away from the promotion strip to promote the piece.

According to the utility model discloses a some embodiments, the both sides of detaining the lower extreme of position slider still are provided with the guide rail, still be provided with the inserts on the interior mould benevolence, be provided with on the inserts with the guide slot that the guide rail matches.

According to the utility model discloses a some embodiments, injection mold is still including keeping away a post, keep away a post fixed connection in the C board, the upper end of keeping away a post is located the inner chamber, the upper end of keeping away a post is provided with the cooperation detain the empty structure of keeping away of position slider.

According to the utility model discloses a some embodiments, detain on the position slider with one side that first direction inclined plane is relative is provided with third direction inclined plane, first direction inclined plane is parallel with third direction inclined plane, it has fourth direction inclined plane to keep away the position post, fourth direction inclined plane with the laminating of third direction inclined plane.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

fig. 1 is a perspective view of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the embodiment of the present invention during mold closing;

fig. 3 is a schematic partial structure diagram of the mold closing of the embodiment of the present invention;

FIG. 4 is a schematic structural view of the embodiment of the present invention during mold opening;

FIG. 5 is a schematic view of a partial structure of the embodiment of the present invention during mold opening;

fig. 6 is a schematic structural view of the fastening slider according to the embodiment of the present invention;

fig. 7 is a front view of the catching slider according to the embodiment of the present invention;

fig. 8 is a schematic structural view of a guide post according to an embodiment of the present invention;

fig. 9 is a schematic structural view of the position-avoiding column according to the embodiment of the present invention;

fig. 10 is a schematic structural view of an insert according to an embodiment of the present invention;

fig. 11 is a schematic structural view of an insert according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a guide block according to an embodiment of the present invention;

fig. 13 is a schematic structural view of a pushing block according to an embodiment of the present invention.

The reference numbers are as follows:

an ejector plate 100, an ejector pin 110, a push bar 120;

a C plate 200, a guide block 210, a sixth guide slope 211;

the plate B300, the inner mold core 310, the pushing block 320, the fifth guide inclined plane 321, the return spring 330, the insert 340 and the guide groove 341;

insert 400, slide channel 410;

the buckling position sliding block 500, the reverse buckle 510, the first guide inclined plane 520, the third guide inclined plane 530 and the guide rail 540;

guide post 600, second guide surface 610;

a position-avoiding column 700 and a fourth guide slope 710.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, 4 to 6, 8 and 10, an injection mold with a reverse buckling slider structure according to an embodiment of the present invention includes an upper mold and a lower mold which are engaged with each other, the lower mold includes an ejector plate 100 and a plurality of ejector pins 110, the ejector plate 100 can push the ejector pins 110 to separate a product from a cavity, a C plate 200 is installed above the ejector plate 100, the C plate 200 is a fixed plate, a B plate 300 is installed on the C plate 200, a block of mold core 310 is installed inside the B plate 300, the B plate 300 is a floating plate, the C plate 200 is installed above the C plate 200 and is in non-connecting contact with the C plate 200, an insert 400 is installed on the inner mold core 310, the insert 400 has an inner cavity for accommodating a position avoiding pillar 700, a through slider channel 410 is formed on a side surface of the insert 400, a buckling slider 500 for reverse buckling a molding workpiece can slide in the slider channel 410, the insert 400 can also move up and down through the slider channel 410, a first guide inclined plane 520 is processed on one side of the lower end portion of the buckling position sliding block 500, the first guide inclined plane 520 inclines towards the buckling position sliding block 500 from bottom to top, the first guide inclined plane 520 is tightly attached to a guide piece 600, a second guide inclined plane 610 is arranged on the guide piece 600, the second guide inclined plane 610 is tightly attached to the first guide inclined plane 520, the guide piece 600 is fixedly installed on the C plate 200, and the guide piece 600 can enable the buckling position sliding block 500 to have the tendency of moving towards the sliding block channel 410. It will be appreciated that during the movement of the catching slide 500, the direction of displacement is always in the direction of the first guiding slope 520 unless the first guiding slope 520 thereof is disengaged from the guide 600. Referring to fig. 4 and 5, when the injection mold is opened, the B plate 300 drives the inner mold core 310 to move upward, the insert 400 synchronously moves upward and drives the fastening slider 500 to move upward, due to the displacement tendency of the fastening slider 500, the fastening slider 500 simultaneously moves toward the slider channel 410, the reverse buckle 510 of the fastening slider 500 is partially completely retracted into the insert 400, the product is released, and the product can be pushed out through the ejector pin. The insert 400 and the guide piece are utilized to drive the buckling slide block 500 to move towards the slide block channel 410, the product is separated from the buckling position, a product with limited inner space and deeper inverse buckling position can be formed, the product structure requirement is met, the structures of a plurality of parts are simple, and the production cost is saved.

In some embodiments, referring to fig. 2, the injection mold further includes a secondary pushing mechanism, wherein the secondary pushing mechanism includes a pushing block 320, a pushing strip 120, and a return spring 330, the pushing strip 120 is mounted on the ejector plate 100, the pushing block 320 is mounted on the B plate 300, one end of the pushing block 320 protrudes out of the end of the B plate 300, the pushing block 320 can slide on the B plate 300, the other end of the pushing block 320 is connected with the return spring 330, and the protruding portion of the pushing block 320 abuts against the pushing strip 120. In the mold opening process, the pushing bar 120 can push the pushing block 320 to move upwards, and the B plate 300 is driven by the pushing block 320 to move upwards under the action of the pushing bar 120. Due to the arrangement, the workpiece and the insert can be relatively static before the workpiece is pushed out, the buckling position sliding block 500 slides into the sliding block channel 410 in the process, the product buckling position is separated, preparation is made for pushing out the workpiece, and the phenomenon that the reverse buckling position of the workpiece is damaged due to forced pushing out is avoided.

In some embodiments, referring to fig. 4, 5, 12 and 13, guide blocks 210 are installed at both sides of the C plate 200, a sixth guide slope 211 is provided on the guide block 210, and a fifth guide slope 321 is provided on the pusher block 320. In the mold opening process, referring to fig. 4 and 5, in the process that the pushing block 320 rises, due to the abutting action of the sixth guiding inclined surface 211 on the fifth guiding inclined surface 321, the pushing block 320 retracts, after the pushing block 320 is completely retracted into the B plate 300, the B plate 300 stops moving, the inverse buckle 510 of the buckle position slide block 500 is completely submerged into the insert 400, and at this time, the ejector plate 100 continues to move upwards to eject the workpiece out of the mold. So set up, can make earlier and detain position slider 500 and break away from the product back-off position, make the in-process of releasing the work piece can not produce destruction to work piece and mould itself, practiced thrift manufacturing cost, increased the mould life-span.

In some embodiments, referring to fig. 1, 6 and 11, two guide rails 540 are disposed on two sides of the first guide slope 520 on the clamping slide 500, the insert 340 is mounted on the inner core 310, and a guide groove 341 matching with the two guide rails 540 is formed on the insert 340. In the die opening and closing process, the guide groove 341 can limit the displacement of the buckling position slide block 500 in other directions, so that the displacement is more stable, the phenomenon that the buckling position slide block 500 is deviated in the displacement process to cause die clamping stagnation is avoided, the service life of the die is prolonged, and the production efficiency is improved.

In some embodiments, referring to fig. 4 and 5, a position-avoiding column 700 is installed on the C-plate 200 of the injection mold, the position-avoiding column 700 is fixed on the C-plate 200, the upper end of the position-avoiding column 700 is located in the inner cavity of the insert 400, and a space-avoiding structure is arranged at the upper end of the position-avoiding column 700. In the mold opening process, referring to fig. 4 and 5, the ejector plate 100 drives the pushing bar 120 to push the pushing block 320, so that the B plate moves upwards, the inner core 310 and the insert 400 move upwards, the insert 400 drives the buckling slide 500 upwards, the buckling slide 500 moves towards the slide channel 410 under the action of the insert 400 and the guide 600, and finally slides into the clearance structure to be separated from the product buckling position, and the ejector pin ejects the product.

In some embodiments, referring to fig. 7 and 9, a third guiding inclined surface 530 is disposed on a back side of the first guiding inclined surface 520 of the catching slide 500, the first guiding inclined surface 520 is disposed in parallel with the third guiding inclined surface 530, a fourth guiding inclined surface 710 is included in the space-avoiding structure of the space-avoiding stud 700, and a slope of the fourth guiding inclined surface 710 matches a slope of the third guiding inclined surface 530. In the mold closing process, referring to fig. 2 and 3, the injection molding machine drives the bottom plate of the mold to move upwards, the insert 400 contacts with the upper mold and then drives the clamping slide block 500, the inner mold core 310 and the B plate to move downwards, the clamping slide block 500 moves towards the outside of the slide block channel 410 under the action of the fourth guide inclined surface 710, and finally moves to the state before mold opening, namely the first guide inclined surface 520 is attached to the second guide inclined surface 610, so that the clamping slide block 500 smoothly returns to the initial position after mold closing is ensured.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (6)

1. The utility model provides an injection mold with back-off slider structure, includes the last mould and the lower mould of mutually supporting, the lower mould is including a plurality of thimbles, thimble board, C board, B board and interior mould benevolence, and is a plurality of the thimble by the thimble board promotes in order to release the shaping product, the C board is located the thimble board upside, the B board by the thimble board promotes, the B board is located the C board upside and with the C board is connected for the contact nature, interior mould benevolence is fixed in the B board, its characterized in that still includes:

the insert is provided with an inner cavity, the insert is fixedly connected to the inner die core, and a sliding block channel communicated with the inner cavity is arranged on the side surface of the insert;

the buckling position sliding block is connected to the sliding block channel in a sliding mode, an inverted buckle for product forming is arranged at the upper end of the buckling position sliding block, a first guide inclined plane is arranged at the lower end of the buckling position sliding block, the first guide inclined plane and the inverted buckle are located on the same side of the buckling position sliding block, and the first guide inclined plane inclines towards the inner cavity from bottom to top;

the guide piece is fixedly connected to the plate C and provided with a second guide inclined plane, and the second guide inclined plane is tightly attached to the first guide inclined plane.

2. The injection mold with the inverted slider structure as claimed in claim 1, further comprising a secondary pushing mechanism, wherein the secondary pushing mechanism comprises a pushing block, a return spring and a pushing strip, the pushing strip is fixedly connected to the ejector plate, the pushing block is slidably connected to the B plate and can protrude out of the side surface of the B plate, the return spring is connected between the pushing block and the B plate, and the portion of the pushing block protruding out of the end of the B plate is pushed by the pushing strip.

3. The injection mold with the inverted buckle sliding block structure as claimed in claim 2, wherein two sides of the C plate are fixedly connected with a guide block respectively, a fifth guide inclined surface is arranged on the pushing block, a sixth guide inclined surface is arranged on the guide block, when the pushing block ascends relative to the guide block, the pushing block is driven to retract by the pressing of the fifth guide inclined surface by the sixth guide inclined surface, and the pushing block is separated from the pushing strip.

4. The injection mold with the inverted buckle slider structure as claimed in claim 1, wherein guide rails are further disposed on two sides of the lower end of the buckle position slider, the inner mold core is further provided with an insert, and the insert is provided with a guide groove matched with the guide rails.

5. The injection mold with the inverted buckle sliding block structure as claimed in claim 1, further comprising a position-avoiding pillar, wherein the position-avoiding pillar is fixedly connected to the C plate, the upper end of the position-avoiding pillar is located in the inner cavity, and the upper end of the position-avoiding pillar is provided with a space-avoiding structure matched with the buckle sliding block.

6. The injection mold with the inverted buckle slider structure as claimed in claim 5, wherein a third guiding inclined surface is disposed on a side of the buckle slider opposite to the first guiding inclined surface, the first guiding inclined surface is parallel to the third guiding inclined surface, the position-avoiding pillar has a fourth guiding inclined surface, and the fourth guiding inclined surface is attached to the third guiding inclined surface.

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