CN217395610U

CN217395610U - Multichannel plastic injection mold convenient to wash

Info

Publication number: CN217395610U
Application number: CN202220591532.7U
Authority: CN
Inventors: 毛郴
Original assignee: Shenzhen Yiyueheng New Plastic Mould Co ltd
Current assignee: Shenzhen Yiyueheng New Plastic Mould Co ltd
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-09-09
Anticipated expiration: 2032-03-18

Abstract

The utility model relates to an injection mold technical field just discloses a multichannel plastic injection mold convenient to wash, including die holder, upper die base and pneumatic cylinder, the top of die holder is provided with fills up the pillar, it has the lower bolster to fill up the pillar through lower liner plate connection, the upper die base is connected with the cope match-plate pattern through last welt, the through-hole has been seted up to the center department of die holder. This multichannel plastic injection mold convenient to wash through the die holder, the lower liner board, the lower bolster, the welt, the cope match-plate pattern, the pneumatic cylinder, the push pedal, the thimble, second pinion rack, drive gear, lead to and the first pinion rack between mutually supporting, reached the atress situation that improves thimble and product junction, avoid taking place the effect of stress concentration phenomenon, solved the thimble when ejecting the product from the die cavity, the product can take place the problem of local deformation because of stress concentration.

Description

Multichannel plastic injection mold convenient to wash

Technical Field

The utility model relates to an injection mold technical field specifically is a multichannel plastic injection mold convenient to wash.

Background

The injection mold is a device matched with a plastic forming machine in the plastic processing industry, can endow plastic products with complete configuration and accurate size, and has various types and structures because of various plastic varieties and processing methods and various simple and different structures of the plastic forming machine and the plastic products.

After a product in a mold cavity is cooled and molded, the plastic product needs to be taken out, the injection mold usually adopts a one-time ejection mode to push the whole plastic product out of the cavity, but ejector pins of an ejection mechanism are not uniformly distributed on two sides of the product, and at the moment, the product is likely to have stress concentration due to uneven stress in the ejection process, so that the local deformation of the plastic product is caused, and the multi-channel plastic injection mold convenient to clean needs to be provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a be convenient for abluent multichannel plastic injection mold possesses the atress situation that improves thimble and product junction, avoids taking place the advantage of stress concentration phenomenon, has solved the thimble when ejecting with the product from the die cavity, and the product can take place the problem of local deformation because of stress concentration.

(II) technical scheme

In order to achieve the above purpose, the utility model provides a following technical scheme: a multi-channel plastic injection mold convenient to clean comprises a lower die holder, an upper die base and a hydraulic cylinder, wherein a pad strut is arranged at the top of the lower die holder and connected with a lower die plate through a lower lining plate, the upper die base is connected with an upper die plate through an upper lining plate, a through hole is formed in the center of the lower die base, the top end of a piston rod of the hydraulic cylinder penetrates through the through hole and extends to the upper side of the lower die holder, a push plate is fixedly connected to one end, located above the lower die holder, of the piston rod of the hydraulic cylinder, a thimble is arranged at the top of the push plate, thimble holes are formed in the inner portion of the lower lining plate and the inner portion of the lower die plate, the thimble is movably connected with the inner portion of the thimble hole, the top end of the thimble is flush with the top of the lower die plate, through grooves are formed in the inner portions of the lower lining plate and the lower die plate, a first single toothed plate is arranged in the through grooves, and the top of the first single toothed plate is flush with the top of the lower die plate, the improved structure is characterized in that a transmission gear is arranged in the lower lining plate and meshed with the side face of the first single toothed plate, moving grooves are formed in the inner part of the lower lining plate and the inner part of the lower template, a second single toothed plate is arranged at the top of the pushing plate and movably connected with the inner part of the moving grooves, and the side face of the second single toothed plate is meshed with the transmission gear.

Preferably, the top of push pedal is provided with the guide arm, the guide slot has all been seted up to the inside of lower liner plate and the inside of lower bolster, the inside swing joint of guide arm and guide slot, guide arm cooperation guide slot have played the effect of supplementary push pedal directional movement, have restricted the moving direction of push pedal, avoid the push pedal to take place the lateral deviation when removing, reset spring has been cup jointed in the side surface activity of guide arm, and reset spring can avoid the top of push pedal direct and the bottom of lower liner plate to collide, has played and has prevented that push pedal and lower liner plate from taking place to collide the effect of damage.

Preferably, the inner wall that leads to the groove left and right sides all has seted up the spacing groove, and the inside of two spacing grooves all is provided with the gag lever post, the left and right sides of first pinion rack all is provided with the stopper, the stopper is located the inside of spacing groove, and stopper cooperation spacing groove has together played the effect of the first pinion rack displacement range of restriction for first pinion rack can only remove in leading to the within range that the groove allows, the inside swing joint of gag lever post and stopper, under the combined action of stopper and gag lever post, first pinion rack can only vertical removal, has played the effect of the first pinion rack displacement orbit of restriction.

Preferably, the side surface activity of gag lever post has cup jointed and has supported the tight spring, the top that supports the tight spring supports with the bottom of stopper, the bottom that supports the tight spring supports with the inner diapire of spacing groove and holds, supports the tight spring and provides supplementary holding power for first single toothed plate is more stable at the in-process of lifting movement.

Preferably, the dead slot has been seted up to the inside of push pedal, the inner diapire of dead slot has the mounting panel through compression spring connection, the intercommunicating pore has been seted up to the inner roof of dead slot, the bottom of thimble passes the inside that the intercommunicating pore extends to the dead slot, and the thimble is located the inside one end of dead slot and the top fixed connection of mounting panel, and after the die sinking, when the push pedal shifts up under the promotion of pneumatic cylinder, dead slot cooperation mounting panel and compression spring make the removal of thimble be later than the second single toothed plate, have played the work that delays thimble travel time.

Compared with the prior art, the utility model provides a multichannel plastic injection mold convenient to wash possesses following beneficial effect:

1. this multichannel plastic injection mold convenient to wash through the die holder, the lower liner board, the lower bolster, the welt, the cope match-plate pattern, the pneumatic cylinder, the push pedal, the thimble, second pinion rack, drive gear, lead to and the first pinion rack between mutually supporting, reached the atress situation that improves thimble and product junction, avoid taking place the effect of stress concentration phenomenon, solved the thimble when ejecting the product from the die cavity, the product can take place the problem of local deformation because of stress concentration.

2. This multichannel plastic injection mold convenient to wash, through the die holder, the lower bolster, go up the welt, the cope match-plate pattern, the pneumatic cylinder, the push pedal, the thimble, the second pinion rack, drive gear, lead to the groove, first pinion rack, the spacing groove, the gag lever post, the stopper, support tight spring, the dead slot, mutually support between compression spring and the mounting panel, the effect that makes the thimble delay the back and remove has been reached, it can lead to the product too big and warp impaired problem in the twinkling of an eye to have solved thimble and second pinion rack synchronous motion.

Drawings

Fig. 1 is a front sectional view of the present invention;

FIG. 2 is an enlarged view of the point A in FIG. 1 according to the present invention;

fig. 3 is an enlarged view of the point B in fig. 1 according to the present invention.

Wherein: 1. a lower die holder; 2. an upper die holder; 3. a lower liner plate; 4. a lower template; 5. an upper lining plate; 6. mounting a template; 7. a hydraulic cylinder; 8. pushing the plate; 9. a guide bar; 10. a thimble; 11. a second single toothed plate; 12. a transmission gear; 13. a through groove; 14. a first single toothed plate; 15. a limiting groove; 16. a limiting rod; 17. a limiting block; 18. the spring is tightly propped; 19. an empty groove; 20. a compression spring; 21. and (7) mounting the plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a multi-channel plastic injection mold convenient to clean comprises a lower die holder 1, an upper die holder 2 and a hydraulic cylinder 7, wherein a cushion pillar is arranged at the top of the lower die holder 1, the cushion pillar is connected with a lower template 4 through a lower lining plate 3, the upper die holder 2 is connected with an upper template 6 through an upper lining plate 5, a pouring runner is arranged at the top of the upper template 6, a pouring tube is arranged at the center of the upper die holder 2, the bottom end of the pouring tube sequentially penetrates through the upper die holder 2 and the upper lining plate 5 and extends into the pouring runner, a forming female die is arranged at the top of the upper template 6, the interior of the pouring runner is communicated with the interior of the forming female die, a forming male die is arranged at the top of the lower template 4, a through hole is arranged at the center of the lower die holder 1, the top end of a piston rod of the hydraulic cylinder 7 penetrates through the through hole and extends to the upper side of the lower die holder 1, and a push plate 8 is fixedly connected to one end of the piston rod of the hydraulic cylinder 7, which is positioned above the lower die holder 1, the top of the push plate 8 is provided with a guide rod 9, guide grooves are respectively arranged inside the lower liner plate 3 and the lower template 4, the guide rod 9 is movably connected with the inside of the guide groove, the guide rod is matched with the guide groove to play a role of assisting the push plate to move directionally, the moving direction of the push plate is limited, the push plate is prevented from shifting laterally when moving, a reset spring is movably sleeved on the side surface of the guide rod 9, the top end of the reset spring is abutted against the bottom of the lower liner plate 3, the bottom end of the reset spring is abutted against the top of the push plate 8, the top of the push plate 8 is provided with a thimble 10, the inside of the lower liner plate 3 and the inside of the lower template 4 are both provided with thimble holes, the thimble 10 is movably connected with the inside of the thimble holes, the top end of the thimble 10 is flush with the top of the lower template 4, namely, the top end of the thimble 10 is flush with the top of the forming male die, the inside of the push plate 8 is provided with a hollow groove 19, the inner bottom wall of the hollow groove 19 is connected with a mounting plate 21 through a compression spring 20, the inner top wall of the empty groove 19 is provided with a communicating hole, the bottom end of the thimble 10 penetrates through the communicating hole and extends to the inside of the empty groove 19, and one end of the thimble 10, which is positioned in the empty groove 19, is fixedly connected with the top of the mounting plate 21.

The inner part of the lower liner plate 3 and the inner part of the lower liner plate 4 are both provided with a through groove 13, the inner part of the through groove 13 is provided with a first single toothed plate 14, the inner walls of the left side and the right side of the through groove 13 are both provided with a limiting groove 15, the inner parts of the two limiting grooves 15 are both provided with a limiting rod 16, the side surface of the limiting rod 16 is movably sleeved with a resisting spring 18, the top end of the resisting spring 18 is propped against the bottom of the limiting block 17, the bottom end of the resisting spring 18 is propped against the inner bottom wall of the limiting groove 15, the left side and the right side of the first single toothed plate 14 are both provided with limiting blocks 17, the limiting blocks 17 are positioned inside the limiting grooves 15, the limiting rod 16 is movably connected with the inner parts of the limiting blocks 17, the top of the first single toothed plate 14 is flush with the top part of the lower liner plate 4, the inner part of the lower liner plate 3 is provided with a transmission gear 12, the transmission gear 12 is connected with the lower liner plate 3 through a fixed shaft, and the transmission gear 12 can only rotate in situ under the limitation of the fixed shaft, the transmission gear 12 is meshed with the side face of the first single-tooth-plate 14, moving grooves are formed in the inner portion of the lower lining plate 3 and the inner portion of the lower template 4, the second single-tooth-plate 11 is arranged at the top of the pushing plate 8, the second single-tooth-plate 11 is movably connected with the inner portion of the moving grooves, and the side face of the second single-tooth-plate 11 is meshed with the transmission gear 12.

After the mold is closed, the top end of the ejector pin 10 and the top of the first single toothed plate 14 are flush with the top of the lower mold plate 4 to avoid interference on product molding, after the product is cooled and molded, mold opening operation needs to be performed on the mold, after the mold is completely opened, the piston rod of the hydraulic cylinder 7 is controlled to move upwards to push the push plate 8 to move upwards, at this time, because the bottom end of the ejector pin 10 is connected with the mounting plate 21, and the mounting plate 21 is located inside the empty groove 19, the mounting plate 21 and the ejector pin 10 are still in the original position at the moment when the push plate 8 moves upwards, the second single toothed plate 11 is forced to move upwards, and the transmission gear 12 drives the first single toothed plate 14 to move downwards to force the top of the first single toothed plate 14 to be separated from the product, and then, after the push plate 8 moves upwards for a certain distance, the shrinkage of the compression spring 20 reaches the maximum, the ejector pin 10 is forced to move upwards, so that the product is separated from the mold core, in order to finish the material taking operation, in the whole material taking process, as the first single toothed plate 14 moves downwards in advance, the binding force between the product and the mold core is greatly reduced, so that the ejector pin 10 can eject the product more easily, and the product is prevented from deforming due to stress concentration.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a multichannel plastic injection mold convenient to wash, includes die holder (1), upper die base (2) and pneumatic cylinder (7), the top of die holder (1) is provided with the pad pillar, the pad pillar is connected with lower bolster (4) through lower welt (3), upper die base (2) are connected with cope match-plate pattern (6), its characterized in that through last welt (5): a through hole is formed in the center of the lower die holder (1), the top end of a piston rod of the hydraulic cylinder (7) penetrates through the through hole and extends to the upper side of the lower die holder (1), a push plate (8) is fixedly connected to one end, located above the lower die holder (1), of the piston rod of the hydraulic cylinder (7), a thimble hole is formed in the top of the push plate (8), thimble holes are formed in the inner portion of the lower lining plate (3) and the inner portion of the lower lining plate (4), the thimble (10) is movably connected with the inner portion of the thimble hole, the top end of the thimble (10) is flush with the top of the lower lining plate (4), through grooves (13) are formed in the inner portion of the lower lining plate (3) and the inner portion of the lower lining plate (4), a first single toothed plate (14) is arranged in the through groove (13), the top of the first single toothed plate (14) is flush with the top of the lower lining plate (4), and a transmission gear (12) is arranged in the lower lining plate (3), the side face of the transmission gear (12) is meshed with the side face of the first single toothed plate (14), moving grooves are formed in the inner portion of the lower lining plate (3) and the inner portion of the lower mould plate (4), a second single toothed plate (11) is arranged at the top of the push plate (8), the second single toothed plate (11) is movably connected with the inner portion of the moving grooves, and the side face of the second single toothed plate (11) is meshed with the transmission gear (12).

2. The multi-channel plastic injection mold convenient to clean as claimed in claim 1, wherein: the top of push pedal (8) is provided with guide arm (9), the guide slot has all been seted up to the inside of lower bolster (3) and the inside of lower bolster (4), guide arm (9) and the inside swing joint of guide slot, reset spring has been cup jointed in the side surface activity of guide arm (9).

3. The multi-channel plastic injection mold convenient to clean as claimed in claim 1, wherein: spacing groove (15) have all been seted up to the inner wall that leads to groove (13) the left and right sides, and the inside of two spacing grooves (15) all is provided with gag lever post (16), the left and right sides of first pinion rack (14) all is provided with stopper (17), stopper (17) are located the inside of spacing groove (15), the inside swing joint of gag lever post (16) and stopper (17).

4. The multi-channel plastic injection mold convenient to clean as claimed in claim 3, wherein: a resisting spring (18) is movably sleeved on the side surface of the limiting rod (16), the top end of the resisting spring (18) is resisted with the bottom of the limiting block (17), and the bottom end of the resisting spring (18) is resisted with the inner bottom wall of the limiting groove (15).

5. The multi-channel plastic injection mold convenient to clean as claimed in claim 1, wherein: empty slot (19) have been seted up to the inside of push pedal (8), the inner diapire of empty slot (19) is connected with mounting panel (21) through compression spring (20), the intercommunicating pore has been seted up to the inner roof wall of empty slot (19), the bottom of thimble (10) is passed the intercommunicating pore and is extended to the inside of empty slot (19), and thimble (10) are located the top fixed connection of the inside one end of empty slot (19) and mounting panel (21).