CN213947290U

CN213947290U - Many die joints are limit top device for injection mould

Info

Publication number: CN213947290U
Application number: CN202022986828.2U
Authority: CN
Inventors: 邓雅彦
Original assignee: Dongguan Shen An Plastic Mold Co ltd
Current assignee: Dongguan Shen An Plastic Mold Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-08-13
Anticipated expiration: 2030-12-08

Abstract

The utility model relates to a many die joints are top-limiting device for injection mold, it includes fixed die plate, movable mould board and installs the push pedal between fixed die plate and movable mould board, be provided with restriction ejection mechanism ejecting limit subassembly in advance between push pedal and the movable mould board, the limit subassembly is including installing at movable mould board bottom and ejection mechanism together ejecting ejector pin, installing on the push pedal restriction ejector pin ejecting locating part in advance and installing on the movable mould board and locating part guide ejector pin along the guide of predetermined direction activity, and this application has restriction ejection mechanism ejecting in advance to increase staff's work burden, improve work efficiency's effect.

Description

Many die joints are limit top device for injection mould

Technical Field

The application relates to the technical field of three-plate molds, in particular to a top limiting device for a multi-parting-surface injection mold.

Background

Injection molds are tools for producing plastic articles, and three-plate molds are a common type of apparatus among many injection mold types.

The existing three-plate mold comprises a fixed mold plate, a movable mold plate and a push plate, wherein the push plate is arranged between the fixed mold plate and the movable mold plate, in the separation process of the three-plate mold, firstly, the movable mold plate and the push plate move together and are separated from the fixed mold plate, then, the movable mold plate is separated from the push plate, and an ejection mechanism in the movable mold ejects a formed workpiece out of the mold, so that the demolding of the formed workpiece is realized.

In view of the related art in the above, the inventors consider that there are drawbacks in that: because the stroke of the ejection mechanism in the movable die is an independent stroke, the ejection mechanism can be ejected out when the push plate is separated from the fixed die plate in advance under the pushing of a power source, so that a formed workpiece is easily adhered to the fixed die plate and needs to be taken out manually, the workload of workers is increased, the production cost of a product is also increased, and the improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to improve ejection mechanism in the movable mould ejecting in advance, with the defect of formed workpiece adhesion on the fixed die plate, this application provides one kind can restrict ejection mechanism ejecting many die joints for injection mould limit top device in advance.

The application provides a pair of limit top device for many die joints injection mould adopts following technical scheme:

the top limiting device comprises a fixed template, a movable template and a push plate arranged between the fixed template and the movable template, wherein a top limiting component for limiting the ejection mechanism to eject in advance is arranged between the push plate and the movable template, the top limiting component comprises an ejector rod arranged at the bottom of the movable template and ejected together with the ejection mechanism, a limiting part arranged on the push plate for limiting the ejector rod to eject in advance and a guide part arranged on the movable template and guiding the ejector rod to move along a preset direction.

Through adopting above-mentioned technical scheme, the push pedal separates with the fixed die plate, push pedal and movable mould board move together, the locating part restricts the ejector pin ejecting all the time, thereby it is ejecting to restrict ejection mechanism on the movable mould to go forward the shaping work piece, when push pedal separates with the movable mould board, guide and ejector pin slide on the push pedal, separate with the locating part, thereby make the locating part remove the restriction to the ejector pin, make ejection mechanism can drive the ejector pin and accomplish ejecting action on the movable mould, through this scheme, can improve ejection mechanism when push pedal separates with the fixed die plate, the ejecting defect of shaping work piece in advance.

Optionally, the locating part is including installing the locking piece in the push pedal and with locking piece sliding connection's slider, the mounting groove is seted up to one side that the locking piece is close to the push pedal, set up in the mounting groove and supply the gliding locking groove of slider.

Through adopting above-mentioned technical scheme, the mounting groove can supply the guide to pass, and the slider can restrict the guide in the mounting groove and wear out the mounting groove, and when slider and locking groove looks gomphosis, the locating part can freely be worn out to the guide for the locating part contact is to the restriction of ejector pin.

Optionally, a spring is arranged between the locking block and the sliding block, and the end of the spring is abutted to the sliding block and the inner wall of the locking groove.

Through adopting above-mentioned technical scheme, the spring has good elasticity, and compression spring makes slider and locking groove looks gomphosis to make the guide can wear out at the locating part bottom, with the locating part phase separation, and then make the locating part remove the restriction to the ejector pin, when slider and guide were inconsistent, the spring provided the restoring force, made the slider support the guide constantly, reduced guide and locking piece phase separation, lead to the ejecting condition emergence in advance of ejector pin.

Optionally, one side that the slider is close to locking inslot wall is provided with lead screw, and lead screw keeps away from the one end sliding connection locking block of slider, be provided with on the locking block with lead screw looks adaptation and supply the gliding lead screw hole of lead screw.

By adopting the technical scheme, the guide screw rod hole is formed in the locking block, so that the guide screw rod can be used for connecting the sliding block and the locking block in the vertical direction, the ejector rod penetrates into the locking block, and the sliding block can be used for limiting the ejector rod to penetrate through the sliding block in the vertical direction and be ejected out together with the ejection mechanism.

Optionally, the guide piece is including installing the installation department on the movable mould board, installing the guide part in installation department one side and installing the lug of keeping away from installation department one end at the guide part, installation department, guide part and lug integrated into one piece, the guiding hole that supplies the ejector pin to slide to pass is seted up to one side that the installation department is close to the movable mould board.

Through adopting above-mentioned technical scheme, stopper and lug can slide in the mounting groove, and the slider is contradicted with the guide part, because the height of lug is higher than the height of stopper to the slider can be with guide part, the lug restriction inside the locking piece, and the extending direction of locating part is mutually perpendicular with the extending direction of guide, and the guiding hole can be so that the extending direction of ejector pin is unanimous with the extending direction of guide, thereby can realize that the locating part restricts the ejecting effect in advance of ejector pin.

Optionally, two sides of the extending direction of the guide portion of the protruding block are provided with a predetermined first inclined surface, and one side of the sliding block away from the movable die plate is provided with a second inclined surface matched with the protruding block.

Through adopting above-mentioned technical scheme, when the guide slided in the locking piece, first inclined plane and second inclined plane looks adaptation can make the lug can extrude the spring for slider and locking groove looks gomphosis, thereby make things convenient for the guide to wear out from the locking piece, wherein the second inclined plane only sets up in the one side of keeping away from the ejector pin, can reduce the ejector pin and slide in the locking piece, with the slider extrusion locking inslot, thereby lose the ejecting effect of restriction ejector pin.

Optionally, a fillet is arranged at a joint between the guide part and the mounting part.

Through adopting above-mentioned technical scheme, the fillet can slow down the buffer power when locating part and guide contact, and less stress concentration can also be less, the life of extension guide.

Optionally, the minimum distance between the sliding block and the push plate is smaller than the thickness of one end, away from the movable template, of the ejector rod.

By adopting the technical scheme, the distance between the sliding block and the push plate can limit the ejector rod to penetrate out of the locking block, so that the situation that the ejection mechanism drives the ejector rod to reinforce the ejection of the molded workpiece can be reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the end part of the guide piece is positioned in the limiting piece, the extending direction of the limiting piece is vertical to the extending direction of the ejector rod and the extending direction of the guide piece, so that the limiting piece can limit the ejector rod to eject, the ejection mechanism on the movable die is limited to eject a formed workpiece in advance, the guide piece and the ejector rod slide on the push plate, and when the guide piece and the ejector rod are separated from the limiting piece, the limiting piece removes the limitation on the ejector rod, so that the ejection mechanism can drive the ejector rod to complete ejection on the movable die;

2. the end part of the spring is connected with the sliding block and the inner wall of the locking groove, the spring always provides restoring force, the bottom of the sliding block is abutted against the guiding part, one side of the sliding block, far away from the convex block, is abutted against the ejector rod, and therefore the ejector rod is limited to penetrate through the sliding block to finish ejection in advance.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is an overall exploded view of an embodiment of the present application.

Fig. 3 is an exploded view of a ceiling assembly in an embodiment of the present application.

FIG. 4 is a cross-sectional view of a ceiling assembly in an embodiment of the present application

Description of reference numerals: 1. fixing a template; 2. pushing the plate; 3. moving the template; 4. a limiting member; 41. a locking block; 410. a locking groove; 42. a slider; 420. a guide screw hole; 421. a second inclined surface; 43. a spring; 44. a lead screw; 45. mounting grooves; 5. a guide member; 51. an installation part; 510. a guide hole; 52. a guide portion; 53. a bump; 531. a first inclined surface; 6. and a push rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses many die joints are limit top mounted putting for injection mould. Referring to fig. 1, the top limiting device for the multi-parting-surface injection mold comprises a fixed mold plate 1, a push plate 2 and a movable mold plate 3, wherein the push plate 2 is installed between the fixed mold plate 1 and the movable mold plate 3, and in this embodiment, a top limiting assembly is arranged between the push plate 2 and the movable mold plate 3 so as to limit an ejection mechanism on the movable mold to eject a formed workpiece on the fixed mold plate 1 in advance when the push plate 2 is separated from the fixed mold plate 1, so that a worker needs to manually take out the formed workpiece.

Referring to fig. 2, in the present embodiment, the top-limiting assembly includes a limiting member 4, a guide member 5 and a top rod 6 connected to the top end of the ejection mechanism, wherein the guide member 5 includes a mounting portion 51, a guide portion 52 and a protrusion 53, the mounting portion 51 is mounted on the outer side surface of the movable die plate 3, the end of the mounting portion 51 close to the push plate 2 is connected to the guide portion 52, the extending direction of the guide portion 52 is consistent with the separating direction of the push plate 2 and the movable die plate 3, and the protrusion 53 is mounted on the end of the guide portion 52 far from the mounting portion 51. The connection between the guide portion 52 and the mounting portion 51 is provided with a rounded corner, which can reduce stress concentration, thereby extending the service life of the guide 5. The mounting portion 51, the guide portion 52, and the projection 53 are integrally molded.

Wherein, a guide hole 510 is opened at one side of the mounting part 51 close to the movable die plate 3, the guide hole 510 is matched with the push rod 6, so that the push rod 6 can pass through the guide hole 510, thereby limiting the extending direction of the push rod 6 to be consistent with the extending direction of the guide piece 5. One end, far away from the ejection mechanism, of the ejector rod 6 is abutted to the limiting part 4, and the extending direction of the limiting part 4 is perpendicular to that of the ejector rod 6, so that the ejector rod 6 can be limited at the end part of the ejector rod 6 to eject a formed workpiece in advance, the adhesion of the formed workpiece to the fixed die plate 1 is reduced, and the workload of workers for manually taking out the formed workpiece is further reduced.

Referring to fig. 3, in the present embodiment, the limiting member 4 includes a locking block 41, a sliding block 42, and a lead screw 44 connecting the sliding block 42 and the locking block 41, wherein the locking block 41 is installed on the push plate 2, a mounting groove 45 is formed on one side of the locking block 41 close to the push plate 2, and the mounting groove 45 can allow the protrusion 53 and the ejector rod 6 to slide through. The mounting groove 45 is provided with a locking groove 410 for the sliding of the sliding block 42, a spring 43 is arranged between the sliding block 42 and the inner wall of the locking groove 410, and the end part of the spring 43 is connected with the inner wall of the locking groove 410 and the sliding block 42 so as to connect the locking groove 410 and the sliding block 42.

In order to further connect the sliding block 42 and the locking block 41, the sliding block 42 is limited to slide only in the locking groove 410, a guide screw hole 420 is formed in the locking block 41 along the vertical direction, the guide screw 44 is screwed on the side of the sliding block 42 close to the locking block 41, and the end of the guide screw 44 far away from the sliding block 42 is slidably connected to the guide screw hole 420.

The convex block 53 penetrates into the mounting groove 45, the two sides of the sliding block 42 are abutted against the guide part 52, and the distance between the sliding block 42 and the push plate 2 is smaller than the thickness of the push rod 6, so that the push rod 6 can be limited to finish the ejection action in advance.

In addition, the protruding block 53 is provided with a predetermined first inclined surface 531 at both sides in the extending direction of the guide portion 52, and a second inclined surface 421 is provided at a side of the slider 42 away from the stem 6, and the second inclined surface 421 is fitted to the first inclined surface 531.

When a formed workpiece is demoulded, the push plate 2 and the movable template 3 move together and are separated from the fixed template 1, in the process, the guide piece 5 is always positioned in the mounting groove 45 at the bottom of the limiting piece 4, the sliding block 42 also always limits the ejector rod 6 to be ejected in advance, then the push plate 2 is separated from the movable template 3, and the guide piece 5 is driven by the movement of the movable template 3 to be separated from the limiting piece 4. The convex block 53 on the guide piece 5 horizontally slides on the push plate 2, the first inclined surface 531 is abutted against the second inclined surface 421, so that the slide block 42 slides on the guide screw hole 420 under the guide of the first inclined surface 531, the slide screw 44 is limited to slide in the vertical direction and extrude the spring 43, the slide block 42 is embedded with the locking groove 410, the convex block 53 and the guide part 52 can penetrate out of the mounting groove 45, and the separation of the limiting piece 4 from the guide piece 5 and the ejector rod 6 is realized. At this time, the slider 42 releases the limitation on the ejector rod 6, so that the ejector mechanism can drive the ejector rod 6 to complete the ejection action on the movable die, and eject the formed workpiece, thereby completing the demolding process of the formed workpiece.

When the push plate 2 is combined with the movable template 3, the movable template 3 drives the guide piece 5 to be combined with the limiting piece 4. The lug 53 slides on the push plate 2, the first inclined surface 531 on the lug 53, which is far away from one side of the mounting part 51, is abutted to the sliding block 42, so that the sliding block 42 extrudes the spring 43 again in the vertical direction, the sliding block 42 is embedded with the locking groove 410, the lug 53 can penetrate through the locking block 41, the bottom of the sliding block 42, which is close to the push plate 2, is abutted to the guide part 52, one side of the sliding block 42, which is far away from the lug 53, is abutted to the ejector rod 6, and the ejector rod 6 is limited to be ejected in advance again.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a many die joints are limit top device for injection mould which characterized in that: the device comprises a fixed template (1), a movable template (3) and a push plate (2) arranged between the fixed template (1) and the movable template (3), wherein a limit top assembly for limiting the ejection mechanism to eject in advance is arranged between the push plate (2) and the movable template (3), and the limit top assembly comprises an ejector rod (6) which is arranged at the bottom of the movable template (3) and ejected together with the ejection mechanism, a limiting part (4) which is arranged on the push plate (2) and used for limiting the ejector rod (6) to eject in advance, and a guide part (5) which is arranged on the movable template (3) and used for guiding the ejector rod (6) to move along a preset direction.

2. The top-limiting device for the multi-parting-surface injection mold according to claim 1, wherein: locating part (4) including install locking block (41) on push pedal (2) and with locking block (41) sliding connection's slider (42), mounting groove (45) are seted up to one side that locking block (41) are close to push pedal (2), set up in mounting groove (45) and supply gliding locking groove (410) of slider (42).

3. The top-limiting device for the multi-parting-surface injection mold according to claim 2, wherein: a spring (43) is arranged between the locking block (41) and the sliding block (42), and two end parts of the spring (43) are abutted against the inner walls of the sliding block (42) and the locking groove (410).

4. The top-limiting device for the multi-parting-surface injection mold according to claim 2, wherein: one side that slider (42) are close to locking groove (410) inner wall is provided with lead screw (44), one end sliding connection locking block (41) of slider (42) are kept away from in lead screw (44), be provided with on locking block (41) with lead screw (44) looks adaptation and supply the gliding lead screw hole (420) of lead screw (44).

5. The top-limiting device for the multi-parting-surface injection mold according to claim 2, wherein: guide (5) are including installing installation department (51) on movable mould board (3), installing guide portion (52) in installation department (51) one side and installing lug (53) of keeping away from installation department (51) one end at guide portion (52), installation department (51), guide portion (52) and lug (53) integrated into one piece, guiding hole (510) that supply ejector pin (6) to slide to pass are seted up to one side that installation department (51) are close to movable mould board (3).

6. The top-limiting device for a multi-parting-surface injection mold according to claim 5, wherein: and two sides of the lug (53) along the extending direction of the guide part (52) are provided with preset first inclined surfaces (531), and one side of the slide block (42) far away from the movable template (3) is provided with second inclined surfaces (421) matched with the lug (53).

7. The top-limiting device for a multi-parting-surface injection mold according to claim 5, wherein: and a fillet is arranged at the joint between the guide part (52) and the mounting part (51).

8. The top-limiting device for the multi-parting-surface injection mold according to claim 2, wherein: the minimum distance between the sliding block (42) and the push plate (2) is smaller than the thickness of one end of the ejector rod (6) far away from the movable template (3).