CN219256348U

CN219256348U - Automatic water-break structure of injection mold

Info

Publication number: CN219256348U
Application number: CN202320299559.3U
Authority: CN
Inventors: 李�赫; 李朋
Original assignee: Shenzhen Changsheng Xunxing Precision Component Co ltd
Current assignee: Shenzhen Changsheng Xunxing Precision Component Co ltd
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-06-27
Anticipated expiration: 2033-02-20

Abstract

The utility model relates to an automatic water-break structure of an injection mold, which comprises a front mold panel, an A plate, a B plate and a rear mold set in sequence from top to bottom, wherein the B plate is fixedly connected with the rear mold set, a cavity is formed after the A plate and the B plate are assembled, a water gap thimble inserted into the rear mold set is arranged in the B plate in a penetrating way, the top of the water gap thimble is positioned in the cavity, the A plate is provided with a runner assembly, the runner assembly comprises a main runner and a branch runner which are mutually communicated, the upper end of the main runner is positioned in the A plate, the lower end of the main runner and the branch runner are both positioned in the cavity, the lower end of the main runner is detachably connected with the water gap thimble, a movable limiting insert is further arranged in the A plate, a first rubber plug is arranged on the movable limiting insert, a sprue communicated with the main runner is arranged on the front mold panel in a penetrating way, a front mold hook needle connected with the branch runner is further arranged on the front mold panel, a second rubber plug and a limiting screw are arranged on the A plate, a large amount of products and water gap materials formed by stretch-breaking separation injection molding can be saved, and the practicability is higher.

Description

Automatic water-break structure of injection mold

Technical Field

The utility model relates to the technical field of injection molds, in particular to an automatic water-break structure of an injection mold.

Background

At present, most of the traditional large water gap injection molds manually cut the water gap, and a small part of large water gap injection molds cut the water gap in a mode of internal mold cutting, so that the large water gap injection molds have certain limitations, such as low efficiency, poor manual machining precision, unfinished product quality, easy occurrence of forming defects and more labor cost due to the manual machining or internal mold cutting; the material cost of the in-mold processing investment is high, for example, the cutter used in the in-mold cutting is high in price, the cutter is extremely easy to damage under the condition of improper use, and if the cutter is frequently replaced, manufacturers are extremely likely to obtain extremely low production profits due to excessively high production cost, and even risk of non-application is faced; therefore, the method not only leads to high manufacturing cost of injection mold production, but also easily leads to product forming defects, and is unfavorable for long-term development of enterprises.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an automatic water-break structure of an injection mold aiming at the defects in the prior art.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides an automatic water-break mouth structure of injection mold, includes front mould panel, A board, B board and the back module that from top to bottom set gradually, be formed with the cavity behind B board and the back module fixed connection, run through in the B board and be equipped with the mouth of a river thimble that inserts to the back module, the top of mouth of a river thimble is located the cavity, the A board is provided with runner assembly, runner assembly is including sprue and the tributary runner that communicate each other, the sprue upper end is located inside the A board, sprue lower extreme and tributary runner all are located the cavity, sprue lower extreme and mouth of a river thimble detachable connection, still be provided with the spacing mold insert of activity, be provided with on the spacing mold insert of activity and insert the inside first plug of inserting to B board, wear to be equipped with on the front mould panel to insert to the inside the A board and with the tributary runner be connected preceding mould needle, be provided with on the A board and insert to the inside second plug and spacing screw that the front panel is connected.

Preferably, the front mold panel is further provided with a guide post, and the guide post sequentially penetrates through the plate A and the plate B and is connected with the rear mold module.

Preferably, the four guide posts are arranged, and the four guide posts are correspondingly distributed at four opposite angles of the front mold panel.

Preferably, the B plate is further provided with four guide sleeves sleeved outside the guide post, and the four guide sleeves are correspondingly distributed at four opposite angles of the B plate.

Preferably, the movable limiting inserts are four, and the four movable limiting inserts are symmetrically distributed in the plate A by taking the runner assembly as a center.

Preferably, the back module comprises a back template and a bottom plate, wherein the bottom plate is fixedly arranged at the bottom of the back template, and the B plate is fixedly connected with the back template.

Preferably, the four limit screws are arranged on the A plate, and the four limit screws are symmetrically distributed on the A plate by taking the runner assembly as a center.

Preferably, the limit screw comprises a screw cap and a screw rod which are connected into a whole, a first groove for accommodating the screw cap to move up and down is formed in the front mold panel, and the screw rod sequentially penetrates through the first groove and the front mold panel to be fixedly connected with the A plate.

Preferably, a second groove for accommodating the up-and-down movement of the second rubber plug is further formed in the front mold panel, and the lower end of the second rubber plug is fixedly connected to the A plate.

Preferably, the lower end of the main runner and the top of the water gap thimble are correspondingly provided with mutually clamped hook grooves.

The utility model has the beneficial effects that: in the automatic water gap cutting structure of the injection mold, the water gap thimble inserted into the rear module is penetrated and arranged in the B plate, the A plate is provided with the runner component, the runner component comprises a main runner and a branch runner which are mutually communicated, the lower end of the main runner is detachably connected with the water gap thimble, the A plate is also internally provided with the movable limiting insert, the movable limiting insert is provided with the first rubber plug inserted into the B plate, the front mold panel is penetrated with the sprue inserted into the A plate and communicated with the main runner, the front mold panel is also provided with the front mold hook needle inserted into the A plate and connected with the branch runner, the A plate is provided with the second rubber plug and the limiting screw inserted into the front mold panel, the mold opening action is completed through the first rubber plug, the movable limiting insert, the second rubber plug, the front mold hook needle, the limiting screw and the like, and the injection molded product and the water gap material can be separated in a stretch-off mode, a large amount of processing cost is saved, and the practicability is higher.

Drawings

FIG. 1 is a schematic diagram of an open mold front view structure of an automatic gate-breaking structure of an injection mold in an embodiment of the utility model;

FIG. 2 is a schematic diagram of an open side view structure of an automatic gate-breaking structure of an injection mold in an embodiment of the utility model;

FIG. 3 is a schematic diagram of an open-mold cross-section structure of an automatic gate-breaking structure of an injection mold in an embodiment of the utility model;

FIG. 4 is an enlarged schematic view of part A in an embodiment of the present utility model;

FIG. 5 is a schematic diagram of an initial mold opening structure of an automatic gate-breaking structure of an injection mold in an embodiment of the utility model;

in the figure, the name and the serial number are marked: front mold panel-1; a plate-2; b plate-3; a rear module group-4; a nozzle thimble-31; a runner assembly-21; a main runner-211; branch flow channel-212; a movable limit insert-22; a first rubber plug-221; a sprue-11; front mould hook needle-12; a second rubber plug-23; limit screw-24; guide post-13; guide sleeve-32; a rear template-41; a bottom plate-42; screw cap-241; a lead screw-242; hook slot-40.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the following description will be made in detail with reference to the technical solutions in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by a worker of ordinary skill in the art based on the embodiments of the utility model without undue effort, are within the scope of the utility model. Furthermore, directional terms, such as "upper", "lower", "inner", "outer", etc., in the present utility model are merely referring to the directions of the attached drawings, and are used for better and more clear description and understanding of the present utility model, and do not indicate or imply a necessary orientation of the present utility model, and thus should not be construed as limiting the present utility model.

The embodiment of the utility model is shown in fig. 1 to 5, an automatic water-break structure of an injection mold, which comprises a front mold panel 1, an A plate 2, a B plate 3 and a rear mold set 4 which are sequentially arranged from top to bottom, wherein the B plate 3 and the A plate 2 are fixedly connected, a cavity is formed after the A plate 2 and the B plate 3 are assembled, a water gap thimble 31 which is inserted into the rear mold set 4 is penetrated and arranged in the B plate 3, the top of the water gap thimble 31 is positioned in the cavity, the A plate 2 is provided with a runner assembly 21, the runner assembly 21 comprises a main runner 211 and a branch runner 212 which are mutually communicated, the upper end of the main runner 211 is positioned in the A plate 2, the lower end of the main runner 211 and the branch runner 212 are both positioned in the cavity, the lower end of the main runner 211 is detachably connected with the water gap thimble 31, a movable limiting insert 22 is further arranged in the A plate 2, a first rubber plug 221 which is inserted into the B plate 3 is arranged on the movable limiting insert 22, a nozzle 11 which is inserted into the A plate 2 and is communicated with the main runner 211 is penetrated and arranged in the front mold panel 1, a second rubber plug 12 which is inserted into the A plate 2 and is arranged on the front mold panel 1, and a second rubber plug 12 is connected with the front mold panel 23.

Further, as shown in fig. 1 to 5, the front mold panel 1 is further provided with a guide post 13, and the guide post 13 sequentially passes through the a plate 2 and the B plate 3 and is connected with the rear mold 4; specifically, the four guide posts 13 are provided, the four guide posts 13 are correspondingly distributed at four opposite angles of the front mold panel 1, and the guide posts 13 are used for guiding the mold to be matched in correct positions during mold assembly; correspondingly, the B plate 3 is also provided with four guide sleeves 32 sleeved outside the guide post 13, and the four guide sleeves 32 are correspondingly distributed at four opposite angles of the B plate 3; in this embodiment, the guide post 13 and the guide sleeve 32 are combined into a guiding device, which mainly plays a guiding role.

Further, as shown in fig. 1 to 5, four movable limiting inserts 22 are provided, and the four movable limiting inserts 22 are symmetrically distributed inside the a plate 2 with the runner assembly 21 as a center; correspondingly, third grooves for the four movable limiting inserts 22 to move up and down are respectively arranged in the A plate 2; correspondingly, four first rubber plugs 221 are also arranged, the four first rubber plugs 221 are respectively and fixedly arranged at the bottoms of the four movable limiting inserts 22, when the die is closed, the bottoms of the four first rubber plugs 221 are inserted into the B plate 3, the B plate 3 can drive the four first rubber plugs 221 to move when moving, and meanwhile, the four first rubber plugs 221 can drive the four movable limiting inserts 22 to synchronously move; in this embodiment, the number of the first rubber plugs 221 corresponds to the number of the movable limiting inserts 22 one by one.

Further, as shown in fig. 1 to 5, the rear module 4 includes a rear mold 41 and a bottom plate 42, and the bottom plate 42 is fixedly disposed at the bottom of the rear mold 41 for supporting; the B plate 3 is fixedly connected with the rear template 41, and the rear template 41 can drive the B plate 3 to move simultaneously when moving, so that the parting surfaces of the A plate 2 and the B plate 3 are separated, and the parting motion is started.

In the embodiment, four limit screws 24 are provided, and the four limit screws 24 are symmetrically distributed on the A plate 2 by taking the runner assembly 21 as a center; specifically, as shown in fig. 1 and 3, the limit screw 24 includes a screw cap 241 and a screw rod 242 which are integrally connected, a first groove for accommodating the screw cap 241 to move up and down is provided in the front mold panel 1, and the screw rod 242 sequentially passes through the first groove and the bottom of the front mold panel 1 to be fixedly connected with the a plate 2; correspondingly, a second groove for accommodating the second rubber plug 23 to move up and down is further formed in the front mold panel 1, the lower end of the second rubber plug 23 is fixedly connected to the A plate 2, and if the A plate 2 continuously moves along with the B plate 3, the A plate 2 is separated from the front mold panel 1 and then is separated from the front mold panel 1 by a certain distance under the action of the limiting screw 24 and the second rubber plug 23.

In this embodiment, the first rubber plug 221 and the second rubber plug 23 are both nylon rubber plugs.

Further, in the embodiment of the present utility model shown in fig. 1, 3, 4 and 5, the lower end of the main runner 211 and the top of the gate thimble 31 are correspondingly provided with the hooking grooves 40 that are engaged with each other, when the mold is opened, the lower end of the main runner 211 and the top of the gate thimble 31 are separated, and when the mold is closed, the two parts are engaged with each other through the hooking grooves 40 thereon, and when the mold is opened, the two hooking grooves 40 are separated, so that the hooking and separating effect can be achieved, and the structure in the embodiment does not limit the angle of the specific hooking.

When the die is opened, the rear die set 4 moves 10mm, the B plate 3 moves with the rear die set 4, the first rubber plug 221 on the B plate 3 drives the movable limiting insert 22 to move 10mm, PL (Parting Line) surfaces (also called as Parting surfaces) of the A plate 2 and the B plate 3 are opened 10mm, at the moment, the A plate 2 is still, the branch runner 212 is reserved at the bottom end of the A plate 2 under the action of the front die hooking needle 12, and the middle main runner 211 is reserved at the bottom end of the A plate 2 under the action of the water gap thimble 31; the injection molded product is kept at the position of the B plate 3 under the action of the mold sticking force or the slide position; when the rear die set 4 continues to open, the A plate 2 is driven by the movable limiting insert 22 and separated from the front die panel 1 by 10mm against the pulling force of the second rubber plug 23, the front die hook needle 12 fixed on the front die panel 1 is separated from the gate material by force, and the gate material is retained in the rear die under the action of the middle gate thimble 31; the plate A2 is limited by the limit screw 24 to move continuously after the die is opened for 20 mm; and the rear module 4 continuously ejects the injection molded product and the nozzle material after the mold opening action is finished, and the action cycle is finished after the normal mold closing.

The automatic water gap breaking structure of the injection mold can separate injection molded products from water gap materials in a stretch-breaking mode, so that a large amount of processing cost is saved, and the practicability is higher.

It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.

Claims

1. An automatic water cut-off structure of injection mold, its characterized in that: including front mould panel, A board, B board and the back module that from top to bottom set gradually, be formed with the cavity behind B board and the back module fixed connection, it inserts to the mouth of a river thimble of back module to run through in the B board, the top of mouth of a river thimble is located the cavity, the A board is provided with runner subassembly, runner subassembly is including sprue and the tributary way of intercommunication each other, the sprue upper end is located inside the A board, sprue lower extreme and tributary way all are located the cavity, sprue lower extreme and mouth of a river thimble detachable connection, still be provided with movable spacing mold insert in the A board, be provided with the first plug that inserts to the B board inside on the movable spacing mold insert, wear to be equipped with on the front mould panel to insert to the A inboard and be linked together with the sprue plug mouth of a plug, still be provided with on the front mould panel and insert to the A inboard and be connected with the tributary way the front mould and collude the needle, be provided with on the A board and insert to the inside second screw and spacing of front mould panel.

2. The automatic water-break structure of an injection mold according to claim 1, characterized in that: the front mould panel is also provided with a guide pillar, and the guide pillar sequentially penetrates through the A plate and the B plate and is connected with the rear mould set.

3. The automatic water-break structure of an injection mold according to claim 2, characterized in that: the guide posts are four, and the four guide posts are correspondingly distributed at four opposite angles of the front mold panel.

4. The automatic water-break structure of an injection mold according to claim 3, wherein: the guide sleeves are sleeved outside the guide posts, four guide sleeves are arranged on the B plate, and the four guide sleeves are correspondingly distributed at four opposite angles of the B plate.

5. The automatic water-break structure of an injection mold according to claim 1, characterized in that: the movable limiting inserts are arranged in four and are symmetrically distributed in the plate A by taking the runner assembly as the center.

6. The automatic water-break structure of an injection mold according to claim 1, characterized in that: the back module comprises a back template and a bottom plate, wherein the bottom plate is fixedly arranged at the bottom of the back template, and the B plate is fixedly connected with the back template.

7. The automatic water-break structure of an injection mold according to claim 1, characterized in that: the four limiting screws are symmetrically distributed on the A plate by taking the runner assembly as a center.

8. The automatic water-break structure of an injection mold according to claim 7, wherein: the limiting screw comprises a screw cap and a screw rod which are connected into a whole, a first groove for accommodating the screw cap to move up and down is formed in the front mold panel, and the screw rod sequentially penetrates through the first groove and the front mold panel to be fixedly connected with the A plate.

9. The automatic water-break structure of an injection mold according to claim 1, characterized in that: the front mold panel is also internally provided with a second groove for accommodating the up-and-down movement of a second rubber plug, and the lower end of the second rubber plug is fixedly connected to the A plate.

10. The automatic water-break structure of an injection mold according to claim 1, characterized in that: the lower end of the main runner and the top of the water gap thimble are correspondingly provided with hook grooves which are mutually clamped.