CN213291204U - Pitched roof mechanism and injection mold - Google Patents

Abstract

The application belongs to the technical field of injection mold accessories, and particularly relates to an inclined ejection mechanism and an injection mold. In the inclined ejection mechanism, the fixed seat is provided with an inclined sliding groove, the sliding seat is slidably mounted in the inclined sliding groove, and two ends of the inclined ejection rod are respectively connected to the sliding seat and the formed part. The bottom plate is fixed with the piece that resets, and the first port setting that the piece that resets corresponds the slope spout. When the thimble board removed to the bottom plate, the piece that resets can wear the thimble board and support and locate the slide for the slide removes by the direction of first port to second port, and drives oblique ejector pin and shaped part and remove, makes the shaped part laminate in the core, realizes resetting smoothly in order to form the profiled surface that does not have the clearance, improves the product yield, reduces to have the clearance between shaped part and the core and leads to the product to have the condition of cutting edge of a knife or a sword. The injection mold with the injection mold can also enable the reset piece to reset smoothly, and the condition that burrs exist in a product due to the fact that a gap or a level difference exists between the formed piece and the mold core is reduced.

Description

Pitched roof mechanism and injection mold

Technical Field

The application belongs to the technical field of injection mold accessories, and particularly relates to an inclined ejection mechanism and an injection mold.

Background

Some current injection mold can set up oblique top mechanism, and oblique top mechanism mainly used shaping product inside undercut and arch have ejecting function simultaneously. The inclined ejection mechanism comprises a fixed seat, a sliding seat which is slidably installed on the fixed seat, an inclined ejection rod which is fixed on the sliding seat, and a forming part which is fixed at one end of the inclined ejection rod. The fixing seat is fixed on the ejector plate and can move along with the ejector plate. The molding part is used for being attached to the mold core to form a molding surface.

However, for the lifter with a larger length-diameter ratio (for example, 20 to 30), during the injection molding process, the molded part is prone to not be reset smoothly due to the deflection of the longer lifter, so that a gap or a step difference is formed at a position where the molded part and the core need to be attached, and a flash phenomenon exists in the product.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a push up mechanism and injection mold to solve the technical problem that the push up mechanism of current great draw ratio resets and leads to the product to have to drape over one's shoulders smoothly.

The embodiment of the application provides a mechanism pushes up to one side, is applied to in the injection mold who has core, movable mould board, thimble board and bottom plate, mechanism includes to one side:

the fixing seat is used for being fixed on the ejector plate and provided with an inclined sliding groove; the inclined sliding groove is provided with a first port and a second port which are oppositely arranged, and the distance from the center of the first port to the bottom surface of the fixed seat is smaller than the distance from the center of the second port to the bottom surface of the fixed seat;

the sliding seat is assembled in the inclined sliding groove in a sliding mode along the extending direction of the inclined sliding groove;

the first end of the inclined ejector rod is fixed with the sliding seat;

the molding part is fixed at the second end of the inclined ejector rod and is used for being matched with the mold core to form a molding surface;

the resetting piece is used for being fixed on the bottom plate and is arranged corresponding to the first port;

when the thimble board moves to the bottom plate, the piece that resets can wear into the thimble board and support and locate the slide, so that the slide by first port extremely the direction of second port removes and the formed part laminating in the core.

Optionally, the reset member has an inclined abutment surface for abutting engagement with the slider to push against the slider.

Optionally, the difference between the angle of the inclined abutment surface relative to the direction of movement of the ejector plate and the angle of the axis of the inclined ejector pin relative to the direction of movement of the ejector plate is in the range 3 ° to 5 °.

Optionally, the contactable length of the inclined abutment surface is in the range 10 to 15 mm.

Optionally, the lifter mechanism further comprises a guide block for being mounted on the movable die plate, the guide block is provided with a guide hole, and the lifter rod is slidably assembled in the guide hole.

Optionally, the lifter mechanism further includes an auxiliary rod, a first end of the auxiliary rod is slidably assembled on the slide base along an axial direction of the lifter rod, and a second end of the auxiliary rod is connected to the guide block.

Optionally, the number of the oblique ejector rods is one;

or, the quantity of oblique ejector pin is two, two the parallel interval of oblique ejector pin sets up, two the first end of oblique ejector pin all is fixed in same the slide, two the second end of oblique ejector pin all is fixed in same the forming part.

Optionally, the slide base is provided with a positioning groove, the first end of the oblique ejector rod is inserted into the positioning groove, and the first end of the oblique ejector rod is fixed to the slide base through a fastening piece.

Optionally, the sliding seat has a T-shaped sliding portion, the inclined sliding groove includes a T-shaped sliding groove, and the T-shaped sliding portion is slidably mounted on the T-shaped sliding groove so that the sliding seat is slidably mounted on the fixed seat.

The embodiment of the application provides an injection mold, which comprises a mold core, a movable mold plate, an ejector plate, a bottom plate and the inclined ejection mechanism, wherein the mold core is fixed on the movable mold plate, the ejector plate is positioned between the movable mold plate and the bottom plate, and the movable mold plate and the bottom plate are arranged at intervals;

the fixing base is installed on the ejector plate, the oblique ejector pin passes the movable mould board sets up, the forming part can laminate in the core is in order to form the profiled surface, the piece that resets is fixed on the bottom plate.

One or more technical solutions provided in the embodiments of the present application have at least one of the following technical effects: in the inclined ejection mechanism, the fixed seat is provided with an inclined sliding groove, the sliding seat is slidably mounted in the inclined sliding groove, and two ends of the inclined ejection rod are respectively connected to the sliding seat and the formed part. The bottom plate is fixed with the piece that resets, and the first port setting that the piece that resets corresponds the slope spout. When the thimble board moves to the bottom plate, the piece that resets can wear the thimble board and support and locate the slide for the slide moves by the direction of first port to second port, and drives oblique ejector pin and formed part and remove, makes the formed part laminate in the core, realizes resetting smoothly in order to form the shaping face that does not have the clearance, improves the product yield, reduces to have gap or level difference and leads to the product to have the condition of drapeing over one's shoulders the cutting edge.

The injection mold with the injection mold can also enable the reset piece to reset smoothly, and the condition that burrs exist in a product due to the fact that a gap or a level difference exists between the formed piece and the mold core is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a perspective assembly view of a pitched roof mechanism provided in an embodiment of the present application;

FIG. 2 is an exploded perspective view of the mechanism of FIG. 1;

FIG. 3 is a further exploded perspective view of the pitched roof mechanism of FIG. 2;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 5 is a schematic view of a partial assembly of an injection mold according to an embodiment of the present disclosure;

FIG. 6 is a partial cross-sectional view of an injection mold according to an embodiment of the present disclosure when the mold is opened;

fig. 7 is a partial sectional view of an injection mold according to an embodiment of the present application when the mold is closed.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the embodiments of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to orientations and positional relationships illustrated in the drawings, which are used for convenience in describing the embodiments of the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the embodiments of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present application, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

Referring to fig. 1, 2 and 6, an embodiment of the present invention provides an inclined ejecting mechanism 100 applied to an injection mold having a core 200, a movable mold plate 300, an ejector plate 400 and a bottom plate 500, wherein the inclined ejecting mechanism 100 includes a fixed base 10, a sliding base 20, an inclined ejector rod 30, a molded part 40 and a reset part 50. The fixed seat 10 is used for being fixed on the ejector plate 400, and the fixed seat 10 is provided with an inclined sliding chute 11; referring to fig. 3 and 4, the inclined chute 11 has a first port 11a and a second port 11b disposed opposite to each other, a distance from a center of the first port 11a to the bottom surface 12 of the fixing base 10 is smaller than a distance from a center of the second port 11b to the bottom surface 12 of the fixing base 10, and the bottom surface 12 of the fixing base 10 refers to a surface supported on the bottom plate. The slider 20 is slidably fitted in the inclined slide groove 11 in the extending direction of the inclined slide groove 11. The first end 30a of the tilt rod 30 is fixed to the slider 20. A molding member 40 is secured to the second end 30b of the lifter bar 30, the molding member 40 being adapted to cooperate with the core 200 to form a molding surface. The reset piece 50 is fixed to the bottom plate 500, and the reset piece 50 is disposed corresponding to the first port 11 a. Referring to fig. 4, 6 and 7, when the ejector plate 400 moves toward the bottom plate 500, the reset piece 50 can penetrate the ejector plate 400 and abut against the slide 20, so that the slide 20 moves from the first port 11a to the second port 11b to form the molding piece 40 to be attached to the core 200.

The utility model provides an angle lifter mechanism 100, fixing base 10 have slope spout 11, and slide 20 slidable mounting is in slope spout 11, and the both ends of angle ejector pin 30 are connected respectively in slide 20 and formed part 40. A reset piece 50 is fixed on the bottom plate, and the reset piece 50 is arranged corresponding to the first port 11a of the inclined chute 11. When the thimble plate 400 moves towards the bottom plate 500, the reset piece 50 can penetrate the thimble plate 400 and abut against the slide base 20, so that the slide base 20 moves from the first port 11a to the second port 11b, and drives the inclined ejector rod 30 and the molded piece 40 to move, so that the molded piece 40 is attached to the mold core 200, smooth reset is realized to form a molding surface without a gap, the product yield is improved, and the situation that the product has burrs due to the gap or level difference between the molded piece 40 and the mold core 200 is reduced.

Wherein, the axis of the oblique mandril 30 is arranged in a certain angle relative to the bottom surface 12 of the fixed seat 10. The extending direction of the inclined sliding chute 11 forms a predetermined included angle with the bottom surface 12 of the fixing seat 10, for example, 11 ° to 12 °. The slide carriage 20 and the first end 30a of the angled ejector pin 30 may be connected by fasteners or other means.

Referring to fig. 4 and 5, the bottom plate 500 is fixed relative to the movable mold plate 300, and when the ejector plate 400 moves longitudinally relative to the movable mold plate 300, the inner wall of the inclined chute 11 of the fixed seat 10 will apply a force to the slide seat 20, so that the slide seat 20 moves along the extending direction of the inclined chute 11, and the inclined ejector rod 30 and the molded part 40 are driven to move. Referring to fig. 6 and 7, during the mold clamping process, the ejector plate 400 moves longitudinally toward the base plate 500 to drive the slide carriage 20 to move transversely, so as to drive the inclined ejector rod 30 and the molded part 40 to move, and in combination with the thrust of the reset member 50 to the slide carriage 20, the molded part 40 is reliably attached to the mold core 200 to form a molding surface without gaps (as shown in fig. 7), and is ready for injection molding. After injection molding, the mold is opened, so that the ejector plate 400 is away from the bottom plate 500 to move longitudinally to drive the slide carriage 20 to move transversely, thereby driving the inclined ejector rod 30 and the molded part 40 to move, so that the molded part 40 is separated from the mold core 200 (as shown in fig. 6), and undercuts and bulges in the product are avoided, thereby realizing smooth demolding of the product. The longitudinal movement is in the up-down direction in fig. 6 and 7.

For example, referring to fig. 5 and 6, the ejector plate 400 includes an ejector pin fixing plate 410 and an ejector pin pushing plate 420. The thimble fixing plate 410 and the thimble pushing plate 420 may be connected by a fastener. The head of the thimble (not shown) is clamped between the thimble fixing plate 410 and the thimble pushing plate 420, and the thimble passes through the thimble fixing plate 410. When the ejector plate 400 moves longitudinally, the ejector plate 400 drives the ejector pins to move longitudinally, so that the ejector pins push the product. The fixing seat 10 is accommodated in the accommodating groove of the needle fixing plate 410, supported on the needle pushing plate 420, and fixed to the needle pushing plate 420 by a fastening member.

Illustratively, the molding 40 may be mounted to the second end 30b of the lifter bar 30 using fasteners or other means. Alternatively, the molding member 40 and the lifter 30 are integrally molded. And is specifically set as required.

Illustratively, the restoring member 50 has a rod shape, which is easy to mold, and the restoring member 50 can be mounted on the bottom plate 500 perpendicular to the bottom plate 500, which is compact. In addition, the restoring member 50 may also be provided in a block shape or other shapes. The reduction member 50 may be mounted to the base plate 500 by a fastener.

In another embodiment of the present application, referring to fig. 2 to 4, the reset element 50 has an inclined abutting surface 51 for abutting and cooperating with the slider 20 to push the slider 20. Referring to fig. 6 and 7, in the mold clamping process, the ejector plate 400 gradually moves toward the bottom plate 500, the reset member 50 penetrates into the ejector plate 400, referring to fig. 4, and the inclined abutting surface 51 can reliably abut against the slide base 20, so as to provide an acting force to the slide base 20 in the direction from the first port 11a to the second port 11b, so that the slide base 20 moves, and further, the inclined ejector rod 30 and the molded member 40 move. The reset element 50 is provided with an inclined abutting surface 51, so that a certain contact area is formed between the reset element 50 and the slider 20, and the reset element 50 can reliably push the slider 20.

In another embodiment of the present application, referring to fig. 4, the difference between the angle α of the inclined abutment surface 51 with respect to the direction of movement of the ejector plate and the angle β of the axis of the inclined ejector pin 30 with respect to the direction of movement of the ejector plate is in the range of 3 ° to 5 °. The moving direction of the ejector plate is the longitudinal direction of the mold, and in fig. 4, the up-down direction. Setting the inclination angle of the inclined abutment surface 51 to be larger than the inclination angle of the inclined carrier rod 30 facilitates the inclined abutment surface 51 to be reliably abutted on the carriage 20 to move the carriage 20 from the first port 11a to the second port 11 b.

In another embodiment of the present application, referring to fig. 4, the contact length D of the inclined contact surface 51 ranges from 10 to 15 mm. The contactable length D of the inclined abutment surface 51 means a distance between both ends in a direction in which the slider 20 gradually contacts the inclined abutment surface 51. By adopting the scheme, the reset piece 50 can be in good contact with the sliding seat 20 to push the sliding seat 20 to move, and the structure of the reset piece 50 is compact.

In another embodiment of the present application, referring to fig. 3, 4 and 6, the lifter mechanism 100 further includes a guide block 60 for being mounted on the movable mold plate 300, the guide block 60 has a guide hole 61, and the lifter bar 30 is slidably mounted in the guide hole 61. The guide hole 61 of the guide block 60 is parallel to the axis of the lifter 30, and the lifter 30 is disposed through the guide hole 61 to facilitate the lifter 30 to slide in a predetermined direction, so that the molded article 40 is smoothly engaged with the core 200 or disengaged from the core 200. Wherein the guide block 60 may be mounted on the bottom side of the movable die plate 300 by means of fasteners.

In another embodiment of the present application, referring to fig. 3, 4 and 6, the lifter 100 further includes an auxiliary rod 70, a first end 70a of the auxiliary rod 70 is slidably mounted on the slide base 20 along the axial direction of the lifter bar 30, and a second end 70b of the auxiliary rod 70 is connected to the guide block 60. The slider 20 has a through hole 23 through which the auxiliary lever 70 passes. The auxiliary rod 70 is arranged, so that the overall rigidity of the pitched roof mechanism 100 can be improved, the pitched roof rod 30 can work reliably, and the situation that the pitched roof rod 30 is deformed and fails in the working process is reduced. The head of the second end 70b of the auxiliary lever 70 is fitted into the guide block 60, and the second end 70b of the auxiliary lever 70 abuts against the movable die plate 300.

In another embodiment of the present application, referring to fig. 1 and 5, the number of the oblique push rods 30 is two, two oblique push rods 30 are arranged in parallel at intervals, the first ends 30a of the two oblique push rods 30 are both fixed to the same sliding base 20, and the second ends 30b of the two oblique push rods 30 are both fixed to the same molding member 40. This improves the overall rigidity and improves the reliability of the lifter mechanism 100. In addition, the number of the lifter bars 30 is one, which also realizes the function of the lifter mechanism 100.

In another embodiment of the present application, referring to fig. 2 and 3, the sliding base 20 has a positioning slot 21, a first end 30a of the inclined push rod 30 is inserted into the positioning slot 21, and the first end 30a of the inclined push rod 30 is fixed to the sliding base 20 by a fastening member. This facilitates the positioning and assembly of the oblique mandril 30 on the slide seat 20, and improves the assembly efficiency.

In another embodiment of the present application, please refer to fig. 2 and 3, the sliding base 20 has a T-shaped sliding portion 22, the inclined sliding slot 11 includes a T-shaped sliding slot 111, and the T-shaped sliding portion 22 is slidably mounted on the T-shaped sliding slot 111 so that the sliding base 20 is slidably mounted on the fixing base 10. This arrangement facilitates the sliding assembly of the carriage 20 on the holder 10, reducing the possibility of the carriage 20 being disengaged from the holder 10. When the ejector plate 400 moves relative to the base plate 500, the slide 20 will move in a predetermined direction, and the inclined ejector rod 30 and the molded part 40 will be driven to move laterally.

In another embodiment of the present application, referring to fig. 1 and fig. 5 to fig. 7, an injection mold is provided, which includes a core 200, a movable mold plate 300, an ejector plate 400, a bottom plate 500, and the inclined ejecting mechanism 100, wherein the core 200 is fixed to the movable mold plate 300, the ejector plate 400 is located between the movable mold plate 300 and the bottom plate 500, and the movable mold plate 300 and the bottom plate 500 are disposed at an interval; the fixed seat 10 is installed on the ejector plate 400, the inclined ejector rod 30 passes through the movable mold plate 300, the molding member 40 can be attached to the mold core 200 to form a molding surface, and the reset member 50 is fixed on the bottom plate 500.

Since the injection mold adopts all the technical solutions of all the embodiments, all the beneficial effects brought by the technical solutions of the embodiments are also achieved, and are not repeated herein.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (10)

1. The utility model provides an oblique top mechanism which characterized in that is applied to in having core, movable mould board, thimble board and bottom plate's injection mold, oblique top mechanism includes:

the fixing seat is used for being fixed on the ejector plate and provided with an inclined sliding groove; the inclined sliding groove is provided with a first port and a second port which are oppositely arranged, and the distance from the center of the first port to the bottom surface of the fixed seat is smaller than the distance from the center of the second port to the bottom surface of the fixed seat;

the sliding seat is assembled in the inclined sliding groove in a sliding mode along the extending direction of the inclined sliding groove;

the first end of the inclined ejector rod is fixed with the sliding seat;

the molding part is fixed at the second end of the inclined ejector rod and is used for being matched with the mold core to form a molding surface;

the resetting piece is used for being fixed on the bottom plate and is arranged corresponding to the first port;

when the thimble board moves to the bottom plate, the piece that resets can wear into the thimble board and support and locate the slide, so that the slide by first port extremely the direction of second port removes and the formed part laminating in the core.

2. The angle ejector mechanism as claimed in claim 1, wherein said reset member has an inclined abutment surface for abutting engagement with said carriage to push said carriage.

3. The angle ejector mechanism as claimed in claim 2, wherein the difference between the angle of the inclined abutment surface with respect to the direction of movement of the ejector plate and the angle of the axis of the oblique ejector pin with respect to the direction of movement of the ejector plate is in the range of 3 ° to 5 °.

4. The mechanism of claim 2, wherein the contactable length of the inclined abutment surface is in the range of 10 to 15 mm.

5. The angle ejector mechanism as claimed in claim 1, further comprising a guide block for mounting on the movable die plate, the guide block having a guide hole, the angle ejector rod being slidably fitted in the guide hole.

6. The angle ejector mechanism according to claim 5, further comprising an auxiliary rod, a first end of which is slidably fitted on the slide base in an axial direction of the angle ejector rod, and a second end of which is connected to the guide block.

7. The mechanism as claimed in any one of claims 1 to 6, wherein the number of the lifter bars is one;

or, the quantity of oblique ejector pin is two, two the parallel interval of oblique ejector pin sets up, two the first end of oblique ejector pin all is fixed in same the slide, two the second end of oblique ejector pin all is fixed in same the forming part.

8. The angle ejector mechanism according to any one of claims 1 to 6, wherein the slide base has a positioning groove, a first end of the angle ejector rod is inserted into the positioning groove, and the first end of the angle ejector rod is fixed to the slide base by a fastener.

9. The angle push mechanism as claimed in any one of claims 1 to 6, wherein the slide base has a T-shaped sliding portion, and the inclined sliding slot includes a T-shaped sliding slot, and the T-shaped sliding portion is slidably fitted to the T-shaped sliding slot so that the slide base is slidably fitted to the fixing base.

10. An injection mold, which is characterized by comprising a core, a movable mold plate, an ejector plate, a bottom plate and the inclined ejection mechanism as claimed in any one of claims 1 to 9, wherein the core is fixed on the movable mold plate, the ejector plate is positioned between the movable mold plate and the bottom plate, and the movable mold plate and the bottom plate are arranged at intervals;

the fixing base is installed on the ejector plate, the oblique ejector pin passes the movable mould board sets up, the forming part can laminate in the core is in order to form the profiled surface, the piece that resets is fixed on the bottom plate.

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