CN113619034B

CN113619034B - Limiting mechanism for upward sliding block of plastic pipe fitting injection mold

Info

Publication number: CN113619034B
Application number: CN202111032997.5A
Authority: CN
Inventors: 鲍朝谋
Original assignee: Zhejiang Chuangyuan Mould Technology Co ltd
Current assignee: Zhejiang Chuangyuan Mould Technology Co ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2023-05-23
Anticipated expiration: 2041-09-03
Also published as: CN113619034A

Abstract

The utility model provides a plastic pipe fitting injection mold is towards sky side slider stop gear, including preceding, back compound board, preceding compound board one side sets up the fixed die plate, back compound board one side sets up mould foot, preceding ejector pin board, back ejector pin board and ejector pin, mould foot one side sets up the movable mould board, set up the deflector on preceding compound board and the fixed die plate, the last guide way that has made of deflector, the sliding pin is established to deflector one side, set up the slider on the movable mould board, slider and slide sliding fit, establish the guide arm on the slider, the guide arm head cooperatees with the guide way, the loose core piece is connected to slider one side, the slider opposite side sets up the limit piece, limit block has been made under, the slide lateral wall sets up the fixing base, be made on the fixing base has the swing groove, set up the swing board in the swing groove, swing board one side is connected with the swing groove swing through eccentric pin, be provided with the riser on the swing board, be equipped with the spout in the riser, the spout cooperatees with the sliding pin of deflector.

Description

Limiting mechanism for upward sliding block of plastic pipe fitting injection mold

Technical Field

The invention relates to an injection mold, in particular to a limiting mechanism for a slide block of an upward side of an injection mold of a plastic pipe fitting.

Background

When the injection mold is used for producing plastic products (such as plastic pipe fittings), the inner hole of the plastic pipe fitting is usually required to be extracted by a core-extracting structure, the traditional core-extracting structure mostly adopts an oil cylinder to drive a sliding block, the sliding block drives a core-extracting rod to extract core, but the oil cylinder has high cost, the manufacturing cost of the mold is improved, the action is slow, and the production efficiency is influenced. Therefore, the core pulling structure of the inclined guide rod and the inclined guide hole is invented, the inclined guide rod is arranged on one side of the fixed die, the sliding block is arranged on one side of the movable die, the inclined guide hole is formed in the sliding block, the sliding block and the core pulling rod are driven to pull the core through the matching of the inclined guide rod and the inclined guide hole when the die is opened, the structure is simple, the production efficiency is improved, the manufacturing cost of the die is reduced, but when the sliding block is positioned above the die (also called as the upward side), the inclined guide rod drives the sliding block to pull the core upwards, the inclined guide rod can be separated from the inclined guide hole of the sliding block, the sliding block can move downwards under the action of gravity, the inclined guide rod cannot be inserted into the inclined guide hole of the sliding block when the die is closed and reset, so that the next core pulling action of the die is influenced, if the length of the inclined guide rod is prolonged, the inclined guide rod is still in a matched state with the inclined guide hole when the core pulling is completed, the sliding block can be prevented from falling, but the strength of the inclined guide rod after the lengthening is reduced, the inclined guide rod is easy to bend and deform, and the service life is influenced.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a limiting mechanism for a upward sliding block of a plastic pipe fitting injection mold, which is used for limiting the sliding block after the sliding block finishes core pulling, preventing the sliding block from falling down and ensuring smooth mold closing and resetting.

The technical scheme of the upward sliding block limiting mechanism of the plastic pipe fitting injection mold is as follows: the novel plastic composite plate comprises a front composite plate and a rear composite plate, wherein a fixed die plate is arranged on one side of the front composite plate, a die foot, a front ejector plate, a rear ejector plate and an ejector rod are arranged on one side of the rear composite plate, a movable die plate is arranged on one side of the die foot, guide plates are arranged on the front composite plate and the fixed die plate, guide grooves are formed in the guide plates, sliding pins are arranged on one sides of the guide plates, sliding seats are arranged on the movable die plates, sliding blocks are arranged on the sliding seats, the sliding blocks are in sliding fit with the sliding seats, guide rods are arranged on the sliding blocks, heads of the guide rods are matched with the guide grooves, core-pulling blocks are connected on one sides of the sliding blocks, limiting blocks are fixed with the sliding blocks through fasteners, limiting grooves are formed below the limiting blocks, fixing seats are formed in the side walls of the sliding seats, swing grooves are formed in the fixing seats, swing plates are provided with swing plates, one sides of the swing plates are connected with the swing grooves through eccentric pins, reset devices are arranged between the swing plates and the swing plates, sliding grooves are formed in the swing plates, sliding grooves are matched with the sliding pins of the guide plates.

The invention discloses a limiting mechanism of a plastic pipe fitting injection mold towards a top side sliding block, after plastic products are injection molded, the mold is gradually opened from a fixed die plate and a movable die plate, the movable die plate drives a sliding seat, a sliding block, a guide rod, a core pulling block, a limiting block, a fixed seat and a swinging plate to move backwards together, a guide plate, an upper compound plate and the fixed die plate are kept fixed, the guide rod slides along a guide groove of the guide plate so as to drive the sliding block to gradually move upwards, the sliding block drives the core pulling block to pull core, when a sliding groove of a vertical plate moves backwards to be matched with a sliding pin of the guide plate, the sliding pin enters the sliding groove, and under the matching effect of the sliding groove and the sliding pin, the vertical plate and the swinging plate swing around the eccentric pin until the upper end of the swinging plate and the upper end of the fixed seat are in a horizontal state, the sliding block and the limiting block can pass through the position of the swinging plate, and when the limiting groove of the limiting block just corresponds to the swinging plate, the sliding pin also slides out of the sliding groove of the vertical plate, and a reset device drives the swinging plate to reversely swing around the pin to enable the eccentric pin to be clamped into the limiting groove of the limiting block, so that the limiting block cannot be locked and limited; when the mould is gradually closed, the sliding pin slides into the sliding groove of the vertical plate again, under the guiding action of the sliding pin, the vertical plate and the swinging plate swing to one side, so that the upper end of the swinging plate is leveled with the fixed seat, the swinging plate is separated from the limit groove of the limit block to limit, and under the matching action of the guide groove of the guide plate and the guide rod, the sliding block and the limit block reset downwards, and the mould is closed smoothly. According to the scheme, when the sliding block slides backwards to loose core, the sliding pin is matched with the sliding groove of the vertical plate to drive the upper end of the swinging plate to be in a horizontal state with the upper end of the fixing seat, so that the sliding block and the limiting block can smoothly pass through.

The invention relates to a limiting mechanism of a slide block on the upward side of an injection mold for plastic pipe fittings, wherein a chute in a vertical plate is a chute, the inclination angle of the chute is 3-10 degrees, an inclined plane is arranged below a swinging plate, and the inclination angle of the inclined plane is 3-10 degrees. The inclination of spout is too big, and the slide pin is worn and torn easily when cooperating with the spout, and the inclination of spout is too little, and swing plate upwards wobbling angle is also little, and is spacing poor to the reliability of stopper.

The upper opening and the lower opening of the chute are flaring. The flaring is arranged, and when the sliding pin enters the sliding groove, the sliding pin can be guided.

The reset device is a spring, an upper spring groove is formed in the swing plate, a lower spring groove is formed in the fixing seat, the upper spring groove corresponds to the lower spring groove, and springs are arranged in the upper spring groove and the lower spring groove.

Drawings

FIG. 1 is a schematic perspective view of a limiting mechanism for a slide block of an injection mold of plastic pipe fittings toward the top;

FIG. 2 is a perspective view of the cooperation of the slide, slide block, guide rod, guide plate, limiting block, fixing seat and swing plate;

FIG. 3 is a schematic structural view of the cooperation state of the slide, the slide block, the guide rod, the guide plate, the limiting block, the fixed seat and the swinging plate;

fig. 4 is a schematic diagram of a locking state structure of a limit groove of the swing plate and the limit block;

fig. 5 is a schematic structural view of the cooperation state of the fixing seat, the spring and the swinging plate.

Detailed Description

The invention relates to a limiting mechanism for a slide block of an injection mold of a plastic pipe fitting towards the top, which comprises a front compound plate 1 and a rear compound plate 2, as shown in figures 1-5, wherein a fixed die plate 3 is arranged on one side of the front compound plate, a die foot 4, a front ejector plate 5, a rear ejector plate 6 and an ejector rod are arranged on one side of the rear compound plate, a movable die plate 7 is arranged on one side of the die foot, guide plates 8 are arranged on the front compound plate 1 and the fixed die plate 3, guide grooves 9 are formed on the guide plates, sliding pins 10 are arranged on one side of the guide plates, a sliding seat 11 is arranged on the movable die plate 7, a sliding block 12 is arranged on the sliding seat in sliding fit with the sliding seat, a guide rod 13 is arranged on the sliding seat, the head of guide arm cooperatees with guide slot 9, the loose core piece 14 is connected to one side of slider, the opposite side of slider sets up stopper 15, the stopper is fixed mutually with the slider through the fastener, the stopper is made down has spacing groove 16, the lateral wall of slide sets up fixing base 17, the last swing groove 18 that has of fixing base, set up swing board 19 in the swing groove, one side of swing board is connected with the swing groove swing through eccentric pin 20, set up resetting means between swing board and the swing groove, be made with riser 22 on the swing board, be made with spout 23 in the riser, the spout cooperatees with the smooth pin 10 of guide plate 8. After the plastic product is injection molded, the mold gradually evolves from the fixed die plate 3 to the movable die plate 7, the movable die plate drives the sliding seat 11, the sliding block 12, the guide rod 13, the core pulling block 14, the limiting block 15, the fixed seat 17 and the swinging plate 19 to move backwards together, the guide plate 8, the upper compound plate 1 and the fixed die plate 3 are kept fixed, the guide rod 13 slides along the guide groove 9 of the guide plate, so that the sliding block 12 is driven to gradually move upwards, the sliding block drives the core pulling block 14 to pull the core, when the sliding groove 23 of the vertical plate 22 moves backwards to be matched with the sliding pin 10 of the guide plate 8, the sliding pin enters the sliding groove, the guide plate and the sliding pin are fixed, under the matching effect of the sliding groove and the sliding pin, the vertical plate 22 and the swinging plate 19 swing around the eccentric pin 20 under the guiding effect of the sliding pin until the upper end of the swinging plate and the upper end of the fixed seat 17 are in a horizontal state, the sliding block 12 and the limiting block 15 can pass through the swinging plate position, when the limiting groove 16 of the limiting block 15 corresponds to the swinging plate 19, the sliding pin 10 also drives the sliding groove 23 of the vertical plate 22, and the sliding block 19 just slides back around the eccentric plate 19 to the sliding block 20, so that the limiting block 16 can not slide down to be locked and limited by the limiting block 12; when the mould is gradually closed, the slide pin 10 slides into the slide groove 23 of the vertical plate 22 again, under the guiding action of the slide pin, the vertical plate and the swinging plate 19 swing to one side, so that the upper end of the swinging plate is leveled with the fixed seat 17, the swinging plate is separated from the limit groove 16 of the limit block 15 to limit, and under the matching action of the guide groove 9 of the guide plate 8 and the guide rod 13, the slide block and the limit block reset downwards, and the mould is closed smoothly. According to the scheme, when the sliding block 12 slides backwards to loose core, the sliding pin 10 is matched with the sliding groove 23 of the vertical plate 22, the upper end of the swing plate 19 is driven to be in a horizontal state with the upper end of the fixed seat 17, the sliding block 12 and the limiting block 15 can smoothly pass through, when the limiting groove 16 of the limiting block 15 corresponds to the swing plate 19, the sliding pin 10 is separated from the sliding groove 23, the swing plate 19 is pushed to reset upwards to swing under the action of the reset device, the swing plate is clamped into the limiting groove 16, the limiting block plays a limiting role on the sliding block 12, the sliding block is prevented from sliding downwards, the limiting locking is reliable, and smooth die assembly reset of the die is guaranteed. The chute 23 in the riser 22 is a chute with an inclination angle of 3-10 deg., and a bevel 27 is made under the swinging plate 19, the bevel 27 having an inclination angle of 3-10 deg.. The sliding chute 23 has an excessively large inclination angle, the sliding pin 10 is easy to wear when being matched with the sliding chute 23, the inclination angle of the sliding chute is excessively small, the upward swinging angle of the swinging plate 19 is also small, and the reliability of limiting the limiting block 15 is poor. The upper opening and the lower opening of the chute 23 are flaring 24. With the flared mouth 24, the slide pin 10 is guided when it enters the chute 23. The reset device is a spring 21, an upper spring groove 25 is formed in the swinging plate 19, a lower spring groove 26 is formed in the fixing seat 17, the upper spring groove corresponds to the lower spring groove, and the spring 21 is arranged in the upper spring groove and the lower spring groove.

Claims

1. Plastic pipe fitting injection mold is towards sky side slider stop gear, including preceding compound board (1) and back compound board (2), set up fixed die plate (3) in one side of preceding compound board, one side of back compound board sets up mould foot (4), preceding thimble board (5), back thimble board (6) and ejector pin, one side of mould foot sets up movable die plate (7), its characterized in that: the front compound plate (1) and the fixed die plate (3) are provided with a guide plate (8), the guide plate is provided with a guide groove (9), one side of the guide plate is provided with a sliding pin (10), the movable die plate (7) is provided with a sliding seat (11), the sliding seat is provided with a sliding block (12), the sliding block is in sliding fit with the sliding seat, the sliding block is provided with a guide rod (13), the head of the guide rod is matched with the guide groove (9), one side of the sliding block is connected with a core pulling block (14), the other side of the sliding block is provided with a limiting block (15), the limiting block is fixed with the sliding block through a fastener, a limiting groove (16) is formed below the limiting block, the side wall of the sliding seat is provided with a fixed seat (17), the fixed seat is provided with a swinging groove (18), the swinging plate (19) is arranged in the swinging groove, one side of the swinging plate is connected with the swinging groove in a swinging way through an eccentric pin (20), a reset device is arranged between the swinging plate and the swinging groove, the reset device is a spring (21), an upper spring groove (25) is formed in the swinging plate (19), a lower spring groove (26) is formed in the fixed seat (17), the upper spring groove corresponds to the lower spring groove, springs (21) are arranged in the upper spring groove and the lower spring groove, a vertical plate (22) is formed on the swinging plate, a sliding groove (23) is formed in the vertical plate, the sliding groove is matched with a sliding pin (10) of the guide plate (8), the sliding groove (23) in the vertical plate (22) is a chute, the inclination angle of the sliding groove is 3-10 degrees, an inclined surface (27) is arranged below the swinging plate (19), the inclined angle of the inclined surface (27) is 3-10 degrees, when the sliding block (12) slides backwards to loose core, the sliding pin (10) is matched with the sliding groove (23) of the vertical plate (22), the upper end of the swinging plate (19) is driven to be in a horizontal state with the upper end of the fixed seat (17), the sliding block (12) and the limiting block (15) can smoothly pass through, when the limiting groove (16) of the limiting block (15) corresponds to the swinging plate (19), the sliding pin (10) is separated from the sliding groove (23), the swinging plate (19) is pushed to reset upwards under the action of the resetting device to swing, the swinging plate is clamped into the limiting groove (16), the limiting block plays a limiting role on the sliding block (12), when the die is gradually clamped, the sliding pin (10) slides into the sliding groove (23) of the vertical plate (22) again, the vertical plate and the swinging plate (19) swings to one side under the guiding action of the sliding pin, the upper end of the swinging plate is enabled to be smooth with the fixed seat (17), and the swinging plate (15) is separated from the guiding groove (16) of the limiting block (8) under the guiding action of the limiting block (13), and the limiting groove (13) is matched downwards.

2. The plastic pipe injection mold upturned slide block limiting mechanism of claim 1, wherein: the upper opening and the lower opening of the chute (23) are flaring (24).