CN114523628A

CN114523628A - Water-cooling injection mold and using method thereof

Info

Publication number: CN114523628A
Application number: CN202210198619.2A
Authority: CN
Inventors: 汪帮友; 余华鹏; 汪邦奎; 尹和怀
Original assignee: Chuzhou Zhiding Electromechanical Technology Co ltd
Current assignee: Chuzhou Zhiding Electromechanical Technology Co ltd
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-05-24

Abstract

The invention discloses a water-cooling injection mold and a use method thereof, wherein the water-cooling injection mold comprises a fixed mold base plate, the side edge of the fixed mold base plate is symmetrically provided with a bracket, the top of the fixed mold base plate is provided with a lower template, and the top of the lower template is provided with a movable template, and the use method of the water-cooling injection mold comprises the following steps of S1: when the water-cooled core pulling device is used, a water source is connected through two water injection joints, a water-cooling channel is connected in each water injection joint, injection molding is carried out, after the water injection joints are shaped through water cooling, a driving gear arranged on a fixed die base plate drives a gear to rotate during die opening, lateral core pulling action is completed through a rack sliding seat, and cores in the cores are removed. The invention can feed material through pouring openings on two sides, adopts a double-pivot gate for feeding, can automatically separate the gate from a product due to a double-layer mold opening and closing structure during mold opening and closing, and simultaneously adopts a gear rack transmission mechanism to pump a side mold core, namely one mold has two parts.

Description

Water-cooling injection mold and using method thereof

Technical Field

The invention relates to the technical field of molds, in particular to a water-cooling injection mold and a using method thereof.

Background

An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

The existing injection mold is limited in opening and closing separation by the guide pillar and the guide sleeve, so that the opening and closing interface of the mold is not clear, the mold of a plurality of mold cores can cause separation interference, and ejection and separation control of products are unstable.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a water-cooling injection mold and a using method thereof.

The invention provides a water-cooling injection mold which comprises a fixed mold base plate, wherein supports are symmetrically arranged on the side edge of the fixed mold base plate, a lower template is arranged at the top of the fixed mold base plate, and a movable template is arranged at the top of the lower template; the bottom end of the lower template base is provided with a base plate and a fixed plate, the bottom end of the base plate is provided with two groups of push rods, the bottom end of the fixed plate is parallel to the push rods and is provided with a flat push rod, and the bottom ends of the flat push rod and the push rods are connected to the movable template; the inner wall of the lower die base plate is provided with a cavity, a core and a side core are inserted into the inner wall of the cavity, the bottom side of the side core is provided with an upper die insert, the side edge of the upper die insert is connected with a water injection joint through a pin, and the end part of the lower die base plate is fixed with a fixed die base plate through a positioning support; the driving assembly comprises a gear, a driving rack and a rack sliding seat, the bottom end of the driving rack is connected to the inner wall of the rack sliding seat in a sliding mode, the outer wall of the gear is connected to the outer wall of the driving rack in a meshed mode, a limiting sliding block is arranged at the end portion of the driving rack, the bottom end of the limiting sliding block is connected to the outer wall of the fixed die seat plate in a sliding mode, a connecting block is arranged at the end portion of the driving rack, the end portion of the connecting block is connected with the side edge of the upper die insert block, and a locking block is vertically inserted into the bottom end of the connecting block; the fixed die base plate is vertically inserted into the fixed die base plate, the lower die plate and the movable die plate, and the outer wall of the fixed die base plate is sleeved with a spring;

according to a further scheme of the invention, a gear shaft is fixed on the inner wall of the gear through a pin, and the end part of the gear shaft is fixed on the outer wall of the fixed die base plate through a bearing seat.

According to a further scheme of the invention, the inner side of the lower template base is provided with a limiting nut, and the limiting nut is positioned on the outer wall of the end part of the distance pull rod.

According to a further scheme of the invention, the bottom end of the fixed die base plate is provided with a positioning ring, and the inner wall of the positioning ring is connected with the end part of the core.

As a further scheme in the invention, an adjusting washer is clamped at the bottom end of the push rod.

According to a further scheme of the invention, two corners of a joint of the lower template base and the movable template are vertically provided with a guide pillar and a guide sleeve, and an adjusting spring is adjusted on the outer wall of the guide pillar.

The use method of the water-cooling injection mold is carried out according to the following steps:

s1: when the mold is opened, the driving gear arranged on the fixed mold base plate drives the gear to rotate, and the lateral core pulling action is completed through the rack sliding seat to remove cores in the fixed mold base plate;

s2: at the moment, the parting surface I-I is parted under the action of a spring, and the parting distance is limited by a distance pull rod to drive the first-order separation of the fixed die base plate and the lower die plate and the second-order pre-separation of the movable die plate;

s3: then parting the II-II parting surface of the movable template, and pushing out a product combined with the inner side of the lower die base plate by a push rod;

s4: in order to prevent the push rod from interfering with the side core, the adjusting spring is adopted to drive the guide pillar and the guide sleeve to limit, so that the pushing mechanism is reset in advance, and then a product is pushed out.

The beneficial effects of the invention are as follows: the mold is fed through pouring ports on two sides, double-pivot gate feeding is adopted, the gate and a product can be automatically separated due to a double-layer mold opening and closing structure during mold opening and closing, a side mold core is drawn out by adopting a rack transmission mechanism, one mold has two parts, the integral mold forming efficiency can be improved, meanwhile, the pushing mechanism is reset in advance by adopting a double-interface mold opening and closing structure, and the product is ejected out later, so that the interference between the mold cores is reduced.

Drawings

FIG. 1 is a schematic sectional view of a water-cooled injection mold and a method for using the same according to the present invention;

FIG. 2 is a schematic side view of a partial cross-sectional structure of a water-cooled injection mold and a method for using the same according to the present invention;

fig. 3 is a schematic top view half-section structure diagram of a water-cooled injection mold and a use method thereof according to the present invention.

In the figure: 1. a base plate; 2. a flat ejector rod; 3. a fixing plate; 4. a push rod; 5. a gear; 6. a gear shaft; 7. a limiting slide block; 8. connecting blocks; 9. a locking block; 10. positioning the bracket; 11. a water injection joint; 12. a pin; 13. an upper die insert; 14. a lower die base plate; 15. a core; 16. a side core; 17. a fixed die base plate; 18. a lower template; 19. moving the template; 20. a lower template base; 21. a spring; 22. a distance pull rod; 23. a limit nut; 24. a driving rack; 25. positioning rings; 26. a rack slide carriage; 27. an adjusting washer; 28. a guide post; 29. a guide sleeve; 30. adjusting the spring; 31. a movable template seat; 32. and (4) a bracket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, the water-cooling injection mold comprises a fixed mold base plate 17, wherein brackets 32 are symmetrically arranged on the side edge of the fixed mold base plate 17, a lower template 18 is arranged at the top of the fixed mold base plate 17, and a movable template 19 is arranged at the top of the lower template 18; the lower template base 20, the bottom end of the lower template base 20 is provided with a backing plate 1 and a fixing plate 3, the bottom end of the backing plate 1 is provided with two groups of push rods 4, the bottom end of the fixing plate 3 is parallel to the push rods 4 and is provided with a flat ejector rod 2, and the bottom end of the flat ejector rod 2 and the bottom end of the push rods 4 are connected to a movable template 19; the inner wall of the lower die base plate 14 is provided with a die cavity, a core 15 and a side core 16 are inserted into the inner wall of the die cavity, the bottom side of the side core 16 is provided with an upper die insert 13, the side edge of the upper die insert 13 is connected with a water injection joint 11 through a pin 12, and the end part of the lower die base plate 14 is fixed with a fixed die base plate 17 through a positioning bracket 10; the driving assembly comprises a gear 5, a driving rack 24 and a rack sliding seat 26, the bottom end of the driving rack 24 is connected to the inner wall of the rack sliding seat 26 in a sliding manner, the outer wall of the gear 5 is connected to the outer wall of the driving rack 24 in a meshing manner, a limiting slide block 7 is arranged at the end part of the driving rack 24, the bottom end of the limiting slide block 7 is connected to the outer wall of the fixed die seat plate 17 in a sliding manner, a connecting block 8 is arranged at the end part of the driving rack 24, the end part of the connecting block 8 is connected with the side edge of the upper die insert 13, and a locking block 9 is vertically inserted into the bottom end of the connecting block 8; distance pull rod 22, distance pull rod 22 pegs graft perpendicularly in fixed die bedplate 17, on the inner wall of lower bolster 18 and movable mould board 19, and distance pull rod 22's outer wall has cup jointed spring 21, the inner wall of gear 5 is fixed with gear shaft 6 through the round pin, and the tip of gear shaft 6 is fixed in on the outer wall of fixed die bedplate 17 through the bearing frame, the inboard of lower bolster seat 20 is equipped with stop nut 23, and stop nut 23 is located distance pull rod 22's tip outer wall, the bottom of fixed die bedplate 17 is equipped with locating ring 25, and the inner wall of locating ring 25 and the tip of type pistil 15 are connected, the bottom joint of push rod 4 has adjusting washer 27, two angles of the junction of lower bolster seat 20 and movable mould board 19 all are equipped with guide pillar 28 and guide pin bushing 29 perpendicularly, and the outer wall regulation of guide pillar 28 has adjusting spring 30.

s1: when in use, the water source is connected through the water injection joints 11, the number of the water injection joints 11 is two, the water cooling channels are connected in the water injection joints 11, the water injection molding is carried out, after the water injection joints 11 are shaped by water cooling, when the mold is opened, the gear 5 is driven to rotate by the driving rack 24 arranged on the fixed mold seat plate 17, the lateral core pulling action is completed through the rack slide seat 26, and the cores 15 are removed;

s2: at the moment, the parting surface I-I is parted under the action of a spring 21, and the parting distance is limited by a distance pull rod 22, so that the fixed die seat plate 17 and the lower die plate 18 are driven to be separated in a first order and the movable die plate 19 is driven to be separated in a second order;

s3: then, parting the II-II parting surface of the movable template 19, and pushing out a product combined with the inner side of the lower die base plate 14 by the push rod 4;

s4: in order to prevent the push rod 4 from interfering with the side core 16, the adjusting spring 30 is adopted to drive the guide post 28 and the guide sleeve 29 to limit, so as to realize the pre-reset of the push-out mechanism and the ejection of the product.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A water-cooled injection mold, comprising:

the side edge of the fixed die base plate (17) is symmetrically provided with brackets (32), the top of the fixed die base plate (17) is provided with a lower template (18), and the top of the lower template (18) is provided with a movable template (19);

the bottom end of the lower template base (20) is provided with a backing plate (1) and a fixed plate (3), the bottom end of the backing plate (1) is provided with two groups of push rods (4), the bottom end of the fixed plate (3) is parallel to the push rods (4) and is provided with a flat push rod (2), and the bottom end of the flat push rod (2) and the bottom end of the push rod (4) are connected to a movable template (19);

the water injection mold comprises a lower mold base plate (14), wherein a cavity is formed in the inner wall of the lower mold base plate (14), a core (15) and a side core (16) are inserted into the inner wall of the cavity, an upper mold insert (13) is arranged on the bottom side of the side core (16), the side edge of the upper mold insert (13) is connected with a water injection joint (11) through a pin (12), and the end part of the lower mold base plate (14) is fixed with a fixed mold base plate (17) through a positioning support (10);

the driving assembly comprises a gear (5), a driving rack (24) and a rack sliding seat (26), the bottom end of the driving rack (24) is connected to the inner wall of the rack sliding seat (26) in a sliding mode, the outer wall of the gear (5) is connected to the outer wall of the driving rack (24) in a meshed mode, a limiting slide block (7) is arranged at the end portion of the driving rack (24), the bottom end of the limiting slide block (7) is connected to the outer wall of the fixed die base plate (17) in a sliding mode, a connecting block (8) is arranged at the end portion of the driving rack (24), the end portion of the connecting block (8) is connected with the side edge of the upper die insert block (13), and a locking block (9) is vertically inserted into the bottom end of the connecting block (8);

the fixed die structure comprises a fixed die base plate (17), a lower die plate (18) and a movable die plate (19), wherein a fixed distance pull rod (22) is vertically inserted into the fixed die base plate (17), the lower die plate (18) and the movable die plate (19), and a spring (21) is sleeved on the outer wall of the fixed distance pull rod (22).

2. A water-cooled injection mold according to claim 1, wherein the gear (5) is fixed at its inner wall with a gear shaft (6) by pins, and the end of the gear shaft (6) is fixed at the outer wall of the stationary mold base plate (17) by a bearing housing.

3. A water-cooled injection mould according to claim 1, characterised in that the inner side of the lower mould plate holder (20) is provided with a limiting nut (23), and that the limiting nut (23) is located on the outer wall of the end of the distance rod (22).

4. A water-cooled injection mold according to claim 1, wherein the bottom end of the fixed mold base plate (17) is provided with a positioning ring (25), and the inner wall of the positioning ring (25) is connected with the end of the core (15).

5. The water-cooled injection mold according to claim 1, characterized in that the bottom end of the push rod (4) is clamped with an adjusting washer (27).

6. The water-cooled injection mold according to claim 1, characterized in that a guide post (28) and a guide sleeve (29) are vertically arranged at two corners of the joint of the lower mold plate seat (20) and the movable mold plate (19), and an adjusting spring (30) is adjusted on the outer wall of the guide post (28).

7. The use method of the water-cooled injection mold according to claim 1, wherein the use method of the water-cooled injection mold is performed according to the following steps:

s1: when the water injection mould is used, a water source is connected through the water injection joints (11), the number of the water injection joints (11) is two, the water cooling channel is connected in the water injection joints (11), the water injection mould is formed, after the water injection mould is shaped by water cooling, when the mould is opened, the gear (5) is driven to rotate by the driving rack (24) arranged on the fixed mould base plate (17), the lateral core pulling action is completed through the rack sliding seat (26), and the cores (15) in the side core pulling action are removed;

s2: at the moment, the I-I parting surface is parted under the action of a spring 21, the parting distance is limited by a distance pull rod (22), and the fixed die base plate (17) and the lower die plate (18) are driven to be separated in a first order and the movable die plate (19) is driven to be separated in a second order in a pre-way;

s3: then, parting the II-II parting surface of the movable template (19), and pushing out a product combined with the inner side of the lower die seat plate (14) by a push rod (4);

s4: in order to prevent the push rod (4) from interfering with the side core (16), the adjusting spring (30) is adopted to drive the guide post (28) and the guide sleeve (29) to limit, so that the push-out mechanism is reset in advance, and then a product is ejected out.