CN212422053U - A drawing of patterns subassembly for ammeter case lid - Google Patents

Abstract

The utility model relates to a demoulding component for an ammeter box cover, which comprises a fixed mould core, wherein the left side of the back surface is provided with a second guide hole which is inclined and extends from back to front gradually to the right side; the movable mould is arranged behind the fixed mould core and can move back and forth relative to the fixed mould core, and a second guide column which can be inserted into the second guide hole and can move back and forth is arranged on the front surface of the movable mould facing the fixed mould core; the movable mould core is arranged between the movable mould and the fixed mould core, is relatively fixed with the movable mould and forms a cavity with the fixed mould core; the second demoulding block is arranged on the upper surface and the right side surface of the movable mould core and is provided with a first groove which extends downwards from front to back and is used for accommodating the first barb formed in the mould cavity, a second through hole for the second guide column to penetrate out is arranged in the second demoulding block, and the second demoulding block moves towards the left side direction under the action of the second guide column to enable the first groove to be separated from the first barb under the condition that the movable mould moves backwards relative to the fixed mould. The left side part of the watch box cover is convenient to demould.

Description

A drawing of patterns subassembly for ammeter case lid

Technical Field

The utility model relates to a drawing of patterns subassembly, concretely relates to drawing of patterns subassembly for ammeter case lid.

Background

Electric meter boxes are widely used, and are containers for installing meters and switches, which are indispensable in every residential building or power supply department.

Current ammeter case is like the ammeter case that the chinese utility model patent of patent number ZL201821493416.1 (the grant bulletin number is CN208969146U) discloses that split type switch covers ammeter case includes the table case, the table case on be provided with detachable switch cover, the switch cover on be provided with first positioning bolt hole, switch cover below be provided with two lugs, first positioning bolt hole and two lugs be triangular distribution, the table case on be provided with two holding tanks and a reference column, the lug fill in to the holding tank in.

Foretell ammeter case box (case lid) adopts integrative injection moulding between cover half benevolence and movable mould benevolence, the left side border of table case lid sets up the barb, the barb is and inverts L shape, at the in-process of drawing of patterns, the barb at left side border is colluded easily on the movable mould benevolence of movable mould subassembly, can't break away from injection moulding's table case lid left side portion then can't realize the drawing of patterns, if the drawing of patterns by force, can make the barb at the left side border of table case lid take place to warp and break even and scrap, and in order to realize the drawing of patterns, the roof wall board that will show the case lid through needs the manual work breaks away from movable mould benevolence, the drawing of patterns efficiency has been reduced, and artifical drawing of.

Accordingly, further improvements to existing stripper assemblies are needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the current situation of above-mentioned prior art, a make things convenient for drawing of patterns subassembly that is used for table case lid of the left side portion deciduate of table case lid is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a drawing of patterns subassembly for ammeter case lid, its characterized in that includes

The left side of the rear surface of the fixed die core is provided with a second guide hole which gradually inclines and extends towards the right side from back to front;

the movable die is arranged behind the fixed die core and can move back and forth relative to the fixed die core, and a second guide column which is consistent with the extending direction of the second guide hole and can be inserted into the second guide hole to move back and forth is arranged on the front surface of the movable die facing the fixed die core;

the movable mould core is arranged between the movable mould and the fixed mould core, is relatively fixed with the movable mould, is positioned on the right side of the second guide column, and forms a cavity for injection molding of a box cover of the meter box with the fixed mould core; and

the second demoulding block is arranged on the movable mould core and positioned on the left side of the movable mould core, a first groove which extends downwards from front to back and is in an inverted L shape and is used for accommodating a first barb on the left side of the box cover formed in the mould cavity, a second through hole which is consistent with the extending direction of the second guide column and is used for the second guide column to penetrate out is arranged on the right side surface of the second demoulding block, and the second demoulding block moves towards the left side direction under the action of the second guide column under the condition that the movable mould moves backwards relative to the fixed mould so as to enable the first groove to be separated from the first barb formed in the mould cavity.

In order to facilitate the injection molding of the left side of the watch box cover to form the first barb, a first accommodating cavity for accommodating the first barb is formed between the left side surface of the movable die core and the first groove of the second demoulding piece.

In order to facilitate the left and right movement of the second demoulding piece, a second containing groove for containing the second demoulding piece is formed in the movable mould, and the second demoulding piece moves left and right along the width direction of the movable mould.

In order to prevent the meter box cover from being stuck on the fixed die core and being incapable of realizing demoulding, the fixed die core faces the rear surface of the cavity, and an elastic piece which always enables the demoulding plate to move towards the cavity direction so as to enable the box cover in the cavity to move towards the direction far away from the fixed die core is arranged between the demoulding plate and the rear surface of the fixed die core.

In order to realize the installation of stripper plate, lead the removal of stripper plate simultaneously, be formed with the cavity of holding stripper plate on the rear surface of die core, have on the stripper plate towards the convex column that the cavity direction extends, be formed with the holding in the cavity the jack of convex column, the stripper plate passes through the convex column is installed with the cooperation that corresponds the jack in the cavity.

The elastic piece can adopt a spring sheet form and can also adopt a spring, but preferably, the elastic piece is the spring, a containing hole for containing the spring is formed in the rear surface of the concave cavity, the first end of the spring is connected with the end face of the containing hole, the second end of the spring is connected with the stripper plate, and the spring is in an energy storage state when the fixed die core and the movable die core are in a die assembly state. Thus, the presence of the housing hole can guide the elastic expansion and contraction movement of the spring.

Preferably, four springs are provided on one of the stripper plates, the springs being spaced circumferentially of the socket.

In order to prevent the second barb on the right side part of the meter box cover from hooking the demolding mechanism in the demolding process, the demolding mechanism further comprises a third demolding module which is arranged on the movable die core and is positioned on the right side of the movable die core, a second groove which extends from front to back and downwards and is used for accommodating the second barb on the right side of the box cover formed in the cavity is formed in the left side surface of the third demolding module, and the second groove is in an inverted L shape; the third demolding block penetrates through a third through hole which is obliquely extended from back to front gradually to left side, correspondingly, a third guide column which is consistent with the extension direction of the third through hole and can penetrate through the third through hole is arranged on the front surface of the movable mold in a protruding mode, a third guide hole which is consistent with the extension direction of the third guide column and is used for the third guide column to slide back and forth is formed in the fixed mold core, and the third demolding block moves towards the right side under the action of the third guide column under the action of the movable mold in the state that the movable mold moves backwards relative to the fixed mold so that the second groove is separated from the second barb in the mold cavity. So, in the moving process that the moving die and the moving die core move towards the direction far away from the fixed die relative to the fixed die, the third demoulding block is separated from the second barb, so that the right side part of the meter box cover is separated from the limitation of the third demoulding block, and then the demoulding of the right side part of the meter box cover is realized.

In order to facilitate the injection molding of the right side part of the watch box cover to form the second barb, a second accommodating cavity for accommodating the second barb is formed between the right side surface of the movable die core and the second groove of the third demoulding block.

In order to facilitate the left and right movement of the second demoulding piece, a third containing groove for containing the third demoulding piece is formed in the movable mould, and the third demoulding piece moves left and right along the width direction of the movable mould.

Compared with the prior art, the utility model discloses a second takes off existence of module, at the in-process that the relative cover half benevolence of movable mould and movable mould benevolence removed backward, the second takes off the module can break away from the spacing of the first barb to case lid left side portion, so, at the in-process of drawing of patterns, the table case lid can break away from the cover half benevolence and movable mould benevolence and realize automatic drawing of patterns under the effect of movable mould and movable mould benevolence, the drawing of patterns process is convenient, and prevent to cause the deformation to the first barb of case lid left side portion, whole demoulding mechanism reasonable in design.

Drawings

Fig. 1 is a schematic structural view of a watch box cover according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is a cross-sectional view at another angle in FIG. 2;

fig. 5 is a cross-sectional view of an embodiment of the invention;

fig. 6 is a cross-sectional view of another angle of an embodiment of the present invention;

fig. 7 is a cross-sectional view of an embodiment of the present invention through a second stripping module and a third stripping module;

FIG. 8 is a cross-sectional view of the second stripper block and the third stripper block of FIG. 7 in a moving state;

FIG. 9 is a schematic perspective view of the sub-structure of FIG. 2;

FIG. 10 is a schematic view of the core insert of FIG. 2;

FIG. 11 is a schematic structural view of the cavity block of FIG. 2;

FIG. 12 is a schematic structural view of the first stripping module in FIG. 2;

FIG. 13 is a schematic structural view of the second stripping module in FIG. 2;

fig. 14 is a schematic structural diagram of the third stripping module in fig. 2.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 14, the demolding assembly for a meter box cover according to an embodiment of the present invention includes a cavity plate core 1, a cavity plate a, a movable mold 3, a movable mold core 2, a demolding plate 4, a first demolding module 5, a second demolding module 6, a third demolding module 7, and a thimble assembly 10.

As shown in fig. 2 to 9, the fixed mold core 1 and the movable mold core 2 are arranged from front to back, a cavity for injection molding of a meter box cover 9 is formed among the fixed mold core 1, the movable mold core 2, the first demolding module 5, the second demolding module 6 and the third demolding module 7, the fixed mold at the front side of the fixed mold core 1 is relatively fixed with the fixed mold core 1 and relatively fixed with a shell of the injection molding machine, a glue injection opening a1 communicated with the cavity is formed in the fixed mold a, the movable mold core 2 is fixed on the front surface of the movable mold 3, an ejector pin assembly 10 connected with a power output end of the injection molding machine is arranged on the rear surface of the movable mold 3, the ejector pin assembly 10 comprises an ejector pin plate 101 connected with the power output end of the injection molding machine and ejector pins 102 connected with the ejector pin plate 101 and the movable mold 3, the ejector pins 102 are provided with a plurality of pins and are positioned between the movable mold 3 and the ejector pin plate 101, the ejector pin, thus, the ejector pin assembly 10 drives the movable mold 3 and the movable mold core 2 to move backward relative to the fixed mold core 1, thereby completing the demolding.

The back surface of the fixed mold core 1 facing the cavity is provided with two stripping plates 4, and the two stripping plates 4 are arranged at left and right intervals along the width direction of the fixed mold core 1. As shown in fig. 2 to 9, a cavity 11 for accommodating the corresponding stripper plate 4 is formed on the rear surface of the core insert 1, two cavities 11 are provided, each stripper plate 4 has a protrusion 41 extending toward the corresponding cavity 11, an insertion hole 111 for accommodating the corresponding protrusion 41 is formed in the cavity 11, and the stripper plate 4 is installed in the cavity 11 by the cooperation of the corresponding protrusion 41 and the corresponding insertion hole 111, as shown in fig. 9.

In order to prevent the meter box cover formed in the cavity from sticking to the cavity, as shown in fig. 6, an elastic member is disposed between the stripper plate 4 and the rear surface of the cavity 1 to always move the stripper plate 4 toward the cavity so that the box cover 9 in the cavity moves away from the cavity 1. Specifically, the elastic piece is a spring 8, four springs 8 are arranged on one demolding plate 4, the springs 8 are arranged at intervals along the circumferential direction of the insertion hole 111, a containing hole 112 for containing the spring 8 is formed in the rear surface of the cavity 11, the first end of the spring 8 is connected with the end face of the containing hole 112, the second end of the spring 8 is connected with the demolding plate 4, the spring 8 is in an energy storage state when the fixed mold core 1 and the movable mold core 2 are in a mold closing state, and therefore when the surface case cover is formed in the cavity and demolding is started, the spring 8 acts on the demolding plate 4 and has a tendency of pushing the surface case cover 9 in the cavity to move towards the direction of the movable mold core 2, and therefore the surface case cover 9 is prevented from being stuck on the fixed mold core 1.

As shown in fig. 1, the left side edge of the watch box cover 9 of the embodiment of the present invention has the first barb 92 that is the inverted L shape, the right side edge of the watch box cover 9 has the second barb 93 that is the inverted L shape, the first barb 92 and the second barb 93 all include the horizontal portion 90a that extends around and the vertical portion 90b that extends downwards from the end of the horizontal portion, the top wall plate 91 of the watch box cover 9 has the bending portion 911 that extends backwards and bends downwards, and the longitudinal section of the bending portion 911 is the L shape.

In order to prevent the first barb 92 of the meter box cover 9 from hooking the movable mold and failing to disengage the left side portion of the meter box cover in the demolding process, in this embodiment, the second demolding module 6 is disposed on the movable mold core 2 and located on the left side of the movable mold core 2, the right side surface of the second demolding module 6 is provided with a first groove 61 extending from front to back and downward and used for accommodating the first barb 92 on the left side of the box cover 9 formed in the mold cavity, the first groove 61 is in an inverted L shape, and a first accommodating cavity for accommodating the first barb 92 is formed between the left side surface of the movable mold core 2 and the first groove 61 of the second demolding module 6. The second stripping module 6 penetrates a second through hole 62 which is gradually inclined and extended towards the right side from back to front, correspondingly, a second guide column 34 which is consistent with the extending direction of the second through hole 62 and penetrates through the second through hole 62 is convexly arranged on the front surface of the movable mold 3, a second guide hole 1b which is consistent with the extending direction of the second guide column 34 and is used for the second guide column 34 to slide back and forth is arranged on the fixed mold core 1, and under the condition that the movable mold 3 moves backwards relative to the fixed mold, the second stripping module 6 moves towards the left side under the action of the second guide column 34 to strip the first barb 92 in the stripping cavity from the first groove 61. In this way, in the process of mold release, the first barb 92 can be disengaged from the restriction of the second demolding block 6, and the left side portion of the case lid 9 can be disengaged to realize mold release.

In order to enable the second stripping module 6 to move left and right on the movable mold 3, as shown in fig. 11, a second receiving groove 35 for receiving the second stripping module 6 is formed on the movable mold 3, a second protruding strip 63 extending along the moving direction of the second stripping block 6 is disposed on one of the upper and lower sidewalls of the second stripping module 6, in this embodiment, the second protruding strip 63 is disposed on the upper sidewall of the second stripping module 6, correspondingly, a second strip-shaped groove 351 for the second protruding strip 63 to slide therein is formed on the second receiving groove 35, and the second stripping module 6 moves left and right along the width direction of the movable mold 3 through the sliding fit of the second protruding strip 63 and the second strip-shaped groove 351.

In order to prevent the second barb 93 of the meter box cover 9 from hooking on the moving die and failing to realize the separation of the right side part of the meter box cover in the demolding process, the third demolding module 7 is arranged on the moving die core 2 and positioned on the right side of the moving die core 2, a second groove 71 which extends from front to back and downwards and is used for accommodating the second barb 93 on the right side of the box cover 9 formed in the cavity is formed in the left side surface of the third demolding module 7, the second groove 71 is in an inverted L shape, and a second accommodating cavity for accommodating the second barb 93 is formed between the right side surface of the moving die core 2 and the second groove 71 of the third demolding module 7; a third through hole 72 is formed through the third stripping module 7, the third through hole gradually extends from back to front in an inclined manner to the left side, correspondingly, a third guide column 36 is convexly arranged on the front surface of the movable die 3, the third guide column 36 extends in the same direction as the third through hole 72 and can penetrate through the third through hole 72, a third guide hole 1c is formed in the fixed die core 1, the third guide column 36 extends in the same direction as the third guide column 36 and can slide back and forth in the third guide hole, and in the state that the movable die 3 moves back relative to the fixed die, the third stripping module 7 moves towards the right side under the action of the third guide column 36 so that the second groove 71 is stripped from a second barb 93 in the stripping cavity.

In order to enable the third stripping module 7 to move left and right on the movable die 3, a third containing groove 37 for containing the third stripping module 7 is formed in the movable die 3, and the third stripping module 7 moves left and right along the width direction of the movable die 3.

In order to prevent the bending portion 911 of the meter box cover 9 from being separated in the process of demolding, in this embodiment, as shown in fig. 6, a notch 21 is formed at a position, adjacent to the movable mold 3, of the top of the movable mold core 2, a first guide post 31 which is inclined and extended upward gradually from back to front is arranged at the upper portion of the front surface of the movable mold 3, and a first guide hole 1a which is consistent with the extending direction of the first guide post 31 and in which the first guide post 31 is arranged in a front-back sliding manner is formed at the upper portion of the rear surface of the fixed mold core 1; the first stripping block 5 is arranged above the moving die core 2, the lower part of the first stripping block 5 is partially positioned in the gap 21, and the lower part of the front surface of the first stripping block 5 is in contact with the corresponding surface of the gap 21.

As shown in fig. 12, the lower portion of the front surface of the first stripping module 5 has a flange 51 protruding upward for mating with the bent portion 911 of the box cover 9 formed in the cavity, specifically, the longitudinal section of the first stripping module 5 is in an inverted T shape, the lower edge of the front surface of the first stripping module 5 has an extension plate 53 extending forward, and the flange 51 is disposed on the upper surface of the extension plate 53. The first demolding module 5 is provided with a through hole 52 which is consistent with the extending direction of the first guide column 31 and through which the first guide column 31 penetrates, and when the movable mold 3 moves backwards relative to the fixed mold, the first demolding module 5 moves towards the notch 21 under the action of the first guide column 31 to enable the flange 51 to be separated from the bent part 911 of the meter box cover 9 in the cavity, specifically referring to fig. 3 and 6, so that in the demolding process, the bent part 911 can be separated from the limitation of the first demolding module 5 to enable the top of the meter box cover 9 to be separated and realize demolding.

In order to facilitate the above-mentioned first stripping module 5 to move up and down on the moving die 3, a first accommodating groove 32 for accommodating the first stripping module 5 is formed on the moving die 3, limiting members 33 for limiting the first stripping module 5 to move towards the direction away from the notch 21 are disposed in the first accommodating groove 32 along the width direction of the moving die 3 and on the left and right sides of the first stripping module 5, and the first stripping module 5 is slidably limited between the two limiting members 33, as shown in fig. 9.

Directional terms such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the present invention, but these terms are used herein for convenience of description only and are determined based on example orientations shown in the drawings. Since the embodiments disclosed in this embodiment can be arranged in different directions, these directional terms are for illustration purposes only and should not be construed as limiting, for example, "up" and "down" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

Claims (10)

1. A drawing of patterns subassembly for ammeter case lid, its characterized in that includes

The left side of the rear surface of the fixed die core (1) is provided with a second guide hole (1b) which gradually inclines and extends towards the right side from back to front;

the movable mould (3) is arranged behind the fixed mould core (1) and can move back and forth relative to the fixed mould core (1), and a second guide column (34) which is consistent with the extending direction of the second guide hole (1b) and can be inserted into the second guide hole (1b) to move back and forth is arranged on the front surface of the movable mould (3) facing the fixed mould core (1);

the movable mould core (2) is arranged between the movable mould (3) and the fixed mould core (1), is relatively fixed with the movable mould (3), is positioned on the right side of the second guide column (34), and forms a cavity for injection molding of a meter box cover (9) with the fixed mould core (1); and

the second demoulding block (6) is arranged on the movable mould core (2) and located on the left side of the movable mould core (2), a first groove (61) which extends downwards from front to back and is in an inverted L shape and is used for accommodating a first barb (92) on the left side of a box cover (9) formed in the mould cavity is formed in the right side surface of the second demoulding block, a second through hole (62) which is consistent with the extending direction of the second guide column (34) and is used for the second guide column (34) to penetrate out penetrates through the second demoulding block (6), and under the condition that the movable mould (3) moves backwards relative to the fixed mould, the second demoulding block (6) moves towards the left side under the action of the second guide column (34) to enable the first groove (61) to be separated from the first barb (92) formed in the mould cavity.

2. The stripper assembly of claim 1, wherein: a first accommodating cavity for accommodating a first barb (92) is formed between the left side surface of the movable die core (2) and the first groove (61) of the second demoulding piece (6).

3. The stripper assembly of claim 1, wherein: and a second accommodating groove (35) for accommodating the second demoulding piece (6) is formed in the movable mould (3), and the second demoulding piece (6) moves left and right along the width direction of the movable mould (3).

4. The stripper assembly of any of claims 1 to 3, wherein: the mould core (1) faces the rear surface of the cavity, a stripper plate (4) is arranged on the rear surface of the mould cavity, and an elastic piece which always enables the stripper plate (4) to move towards the direction of the mould cavity so that a box cover (9) in the mould cavity moves towards the direction far away from the mould core (1) is arranged between the stripper plate (4) and the rear surface of the mould core (1).

5. The stripper assembly of claim 4, wherein: be formed with cavity (11) of holding stripper plate (4) on the rear surface of decide mould benevolence (1), have on stripper plate (4) towards convex column (41) that cavity (11) direction extends, be formed with the holding in cavity (11) jack (111) of convex column (41), stripper plate (4) pass through convex column (41) and the cooperation that corresponds jack (111) are installed in cavity (11).

6. The stripper assembly of claim 5, wherein: the elastic piece is a spring (8), a containing hole (112) for containing the spring (8) is formed in the rear surface of the cavity (11), the first end of the spring (8) is connected with the end face of the containing hole (112), the second end of the spring (8) is connected with the stripper plate (4), the cavity block (1) and the cavity block (2) are in a die closing state, and the spring (8) is in an energy storage state.

7. The stripper assembly of claim 6, wherein: four springs (8) are arranged on one stripping plate (4), and the springs (8) are arranged at intervals along the circumferential direction of the insertion holes (111).

8. The stripper assembly of claim 4, wherein: the mold comprises a movable mold core (2) and a third demolding module (7) which is arranged on the movable mold core (2) and is positioned on the right side of the movable mold core (2), wherein a second groove (71) which extends from front to back and downwards and is used for accommodating a second barb (93) on the right side of a case cover (9) formed in a mold cavity is formed in the left side surface of the third demolding module (7), and the second groove (71) is in an inverted L shape; a third through hole (72) which gradually extends leftwards and obliquely from back to front penetrates through the third demoulding block (7), correspondingly, a third guide column (36) which is consistent with the extending direction of the third through hole (72) and can penetrate through the third through hole (72) is arranged on the front surface of the movable mould (3) in a protruding mode, a third guide hole (1c) which is consistent with the extending direction of the third guide column (36) and is used for the third guide column (36) to slide forwards and backwards is formed in the fixed mould core (1), and in the state that the movable mould (3) moves backwards relative to the fixed mould, the third demoulding block (7) moves towards the right side under the action of the third guide column (36) so that the second groove (71) is separated from a second barb (93) in the mould cavity.

9. The stripper assembly of claim 8, wherein: a second accommodating cavity for accommodating a second barb (93) is formed between the right side surface of the movable die core (2) and the second groove (71) of the third demoulding block (7).

10. The stripper assembly of claim 8, wherein: and a third accommodating groove (37) for accommodating the third demoulding piece (7) is formed in the movable mould (3), and the third demoulding piece (7) moves left and right along the width direction of the movable mould (3).

Images