Combined ejection mechanism for injection moulds

Abstract

The application provides a combined demolding mechanism of an injection mold, and belongs to the technical field of molds. The combined demolding mechanism of the injection mold solves the problem of low production efficiency of the existing combined demolding mechanism. The combined demolding mechanism of the injection mold, the injection mold comprising a fixed mold base and a movable mold base, the fixed mold base being provided with a fixed mold pulling block slidingly, the movable mold base being provided with a movable mold pulling block slidingly, the combined demolding mechanism comprising an opening plate, the movable mold base being located between the fixed mold base and the opening plate, the opening plate being connected with the movable mold pulling block, a sliding block being slidably arranged in the movable mold base, a push rod being fixed on one end of the sliding block close to the fixed mold base and being inserted into the fixed mold pulling block, the other end of the sliding block being connected with the opening plate, and the opening plate being capable of simultaneously driving the sliding block and the movable mold pulling block to slide away from the fixed mold base, when the sliding block slides away from the fixed mold base, the push rod is capable of driving the fixed mold pulling block to slide away from the cavity on the fixed mold base. The combined demolding mechanism improves the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of molds, and relates to a combined demolding mechanism of an injection mold. BACKGROUND

[0002] With the development of the automobile industry, automobile models are not single, and the models of automobile lampshades are also diversified. Most of the automobile lampshades are formed by injection molding through a mold. The injection mold comprises a fixed mold base and a movable mold base. The fixed mold base and the movable mold base have a cavity therebetween, and the lampshade is formed in the cavity. Generally, the fixed mold base is used to form the outer side surface of the lampshade, and the movable mold base is used to form the inner side surface of the lampshade. After the lampshade is injection molded, the lampshade needs to be demolded and taken out. In order to make the reverse buckle structure or special structure of the lampshade be smoothly demolded, a puller is generally arranged at the position corresponding to the product on the mold. During demolding, the puller is first separated from the reverse buckle structure or special structure, and then the fixed mold base is separated from the movable mold base, so that the formed lampshade is taken out.

[0003] For the puller corresponding to the structure of the inner side surface of the lampshade, the puller is generally arranged in the movable mold base and is called a movable mold puller or an inner core puller. For example, a kind of automobile headlamp injection mold with movable mold ejector plate separation inner core puller disclosed in Chinese patent document [publication number: CN208375878U] comprises a movable mold base plate, a ejector plate and a mold foot fixed on the movable mold base plate, a fixed mold base plate fixed on the mold foot, and a movable mold ejector plate movably connected with the movable mold base plate. The movable mold ejector plate is provided with a horizontal sliding groove and an inclined sliding groove. The horizontal sliding groove is provided with a core holder, and the inclined sliding groove is provided with a core. The core holder and the core are movably connected. The movable mold ejector plate is provided with a fixed mold spring, so that the movable mold base plate and the movable mold ejector plate can be separated. The core is the movable mold puller. After the product is injection molded, when the mold is opened, the fixed mold spring is ejected to drive the movable mold base plate to move, so that the movable mold ejector plate is separated from the movable mold base plate. The core holder is fixed on the movable mold base plate and retreats with the movable mold base plate. The core holder drives the core to move along the inclined sliding groove to the upper side, and finally the core is separated from the product.

[0004] For the puller corresponding to the structure of the outer side surface of the lampshade, the puller is generally arranged in the fixed mold base and is called a fixed mold puller. In order to realize the demolding of the fixed mold puller, an independent oil cylinder is generally arranged to drive the fixed mold puller. During demolding, the movable mold puller needs to be removed first, then the movable mold base and the fixed mold base are separated, and finally the fixed mold puller is driven by the oil cylinder to move out. During mold closing, the fixed mold puller needs to be moved in first, then the movable mold base and the fixed mold base are closed, and finally the movable mold puller is moved in. The mold action is complex, and the production cycle of single product is long, so the production efficiency is low. SUMMARY

[0005] The present application aims at the above-mentioned problems existing in the prior art, and provides a combined demolding mechanism of an injection mold, which solves the technical problem of low production efficiency of the prior combined demolding mechanism.

[0006] The object of the present application can be achieved by the following technical solutions:

[0007] A combined demolding mechanism of an injection mold, the injection mold comprising a fixed mold base and a movable mold base, a cavity being formed between the fixed mold base and the movable mold base, a fixed mold ejector being slidably arranged on the fixed mold base, a movable mold ejector being slidably arranged on the movable mold base, the combined demolding mechanism comprising an opening plate, the movable mold base being located between the fixed mold base and the opening plate, the opening plate being connected with the movable mold ejector, characterized in that a slide block is slidably arranged in the movable mold base, a push rod being fixed on one end of the slide block close to the fixed mold base and inserted into the fixed mold ejector, the other end of the slide block away from the fixed mold base being connected with the opening plate, and the opening plate is capable of simultaneously driving the slide block and the movable mold ejector to slide away from the fixed mold base, when the slide block slides away from the fixed mold base, the push rod is capable of driving the fixed mold ejector to slide away from the cavity on the fixed mold base.

[0008] When the mold is opened, the opening plate moves away from the movable mold base, thereby simultaneously driving the slide block and the movable mold ejector to move away from the fixed mold base, at this time the push rod on the slide block drives the fixed mold ejector to slide away from the cavity on the fixed mold base, that is, the fixed mold ejector and the movable mold ejector simultaneously move away from the cavity to realize simultaneous demolding, and then the fixed mold base and the movable mold base are separated to make the product be ejected. When the mold is closed, the fixed mold base and the movable mold base are first closed, and then the opening plate is moved towards the movable mold base, thereby simultaneously driving the slide block and the movable mold ejector to move towards the fixed mold base, at this time the push rod on the slide block drives the fixed mold ejector to slide towards the cavity on the fixed mold base, that is, the fixed mold ejector and the movable mold ejector simultaneously move towards the cavity to realize simultaneous mold closing. In this way, the mold action can be reduced, the production cycle of single product can be shortened, and the production efficiency can be improved. Moreover, the slide block is arranged in the movable mold base, and the push rod is inserted into the fixed mold ejector, so that the arrangement of the slide block and the push rod does not need to increase the mold volume.

[0009] In the combined demolding mechanism of the injection mold, the slide block is perpendicular to the opening plate, and the slide block and the opening plate are fixed, the push rod is obliquely arranged away from the cavity along the direction from the slide block to the fixed mold ejector.

[0010] The perpendicular arrangement of the slide block and the opening plate can reduce the sliding friction of the slide block when sliding in the movable mold base, so that the slide block can slide smoothly. Moreover, the perpendicular arrangement of the slide block and the opening plate and the oblique arrangement of the push rod away from the cavity can not only realize the sliding of the slide block to drive the sliding of the fixed mold ejector, but also enable the slide block to drive the fixed mold ejector to move away from and close to the cavity in the shortest sliding distance, which is beneficial to improve the work efficiency.

[0011] In the combined demolding mechanism of the injection mold, one end of the slide block close to the fixed mold base abuts against the fixed mold ejector to lock the fixed mold ejector after the injection mold is closed.

[0012] When the mold is opened, the sliding block slides away from the fixed mold base, the sliding block is separated from the fixed mold block, the locking of the fixed mold block is released, and at the same time the fixed mold block is driven by the lever to move away from the cavity position to achieve demolding; when the mold is closed, the sliding block moves towards the fixed mold base, the fixed mold block is driven by the lever to move close to the cavity position until the sliding block abuts against the fixed mold block to lock the fixed mold block on the fixed mold base. The sliding block not only has the function of driving the fixed mold block to achieve demolding and closing, but also has the function of locking the fixed mold block after closing, so that only the sliding block and the lever need to be set to achieve the demolding and closing operation of the fixed mold block and complete the locking after closing, without the need for additional locking mechanism and locking steps, which is beneficial to reduce the mold volume and improve the working efficiency.

[0013] In the combined demolding mechanism of the injection mold, a positioning recess is formed on the side surface of the fixed mold block facing the sliding block, one end of the sliding block close to the fixed mold base is inserted into the positioning recess, an inclined wedge surface is arranged between the end surface of the sliding block close to the fixed mold base and the side surface of the sliding block close to the cavity, and the side surface of the positioning recess has a corresponding surface corresponding to the wedge surface.

[0014] The insertion of one end of the sliding block close to the fixed mold base into the positioning recess limits the sliding block and the fixed mold block through the positioning recess, facilitating the positioning and installation of the sliding block and the fixed mold block. The arrangement of the inclined wedge surface and the corresponding surface can reduce the interference when the sliding block slides, make the sliding block smoothly drive the fixed mold block to demold, and be beneficial to ensure the production efficiency.

[0015] In the combined demolding mechanism of the injection mold, the end surface of the sliding block close to the fixed mold base abuts against the bottom surface of the positioning recess, and the wedge surface abuts against the corresponding surface after the injection mold is closed.

[0016] The arrangement of the wedge surface and the corresponding surface can not only ensure that the sliding block can be separated from the fixed mold block when the mold is opened, make the fixed mold block smoothly complete the unlocking and demolding, and ensure the production efficiency, but also form a wedge effect when the mold is closed, so that the fixed mold block remains stable, which is beneficial to improve the injection quality of the product.

[0017] In the combined demolding mechanism of the injection mold, elastic pads are arranged on the end surface of the sliding block close to the fixed mold base and on the wedge surface, and the elastic pads elastically abut against the fixed mold block after the injection mold is closed.

[0018] The elastic pads have elasticity, not only can assist the sliding of the sliding block when demolding, make the movable mold block and the fixed mold block quickly complete demolding, and be beneficial to improve the production efficiency, but also have a buffering effect when the mold is closed, reduce the hard collision between the sliding block and the fixed mold block, make the combined demolding mechanism work stably and extend the service life.

[0019] In the combined demolding mechanism of the injection mold, the fixed mold spring is arranged on the side of the fixed mold puller close to the cavity.

[0020] The fixed mold spring has elasticity, which not only can provide power assistance for the sliding of the fixed mold puller during demolding, so that the fixed mold puller and the movable mold puller can be quickly demolded, but also has a buffering effect during mold closing, reduces the hard collision between the fixed mold puller and the fixed mold seat, and makes the combined demolding mechanism work stably and prolongs the service life.

[0021] In the combined demolding mechanism of the injection mold, the fixed mold spring is arranged on the side of the fixed mold puller close to the cavity.

[0022] In the combined demolding mechanism of the injection mold, the fixed mold spring is arranged on the side of the fixed mold puller close to the cavity.

[0023] In the combined demolding mechanism of the injection mold, the fixed mold spring is arranged on the side of the fixed mold puller close to the cavity.

[0024] Compared with the prior art, the injection mold has the following advantages:

[0025] In the movable mold seat, a slidable sliding block is arranged, one end of the sliding block is connected with the opening plate, and the other end of the sliding block is provided with a lever inserted into the movable mold puller. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of the first embodiment of the combined demolding mechanism of the application.

[0027] Figure 2 is Figure 1 is an enlarged view of A in FIG. 4.

[0028] Figure 3 is Figure 1 is a partial sectional view of B-B in FIG. 4.

[0029] Figure 4 is Figure 1 is a partial sectional view of C-C in FIG. 4.

[0030] Figure 5 is a perspective view of the fixed mold ejector block and the sliding block in the first embodiment of the combined demolding mechanism of the application.

[0031] In the figure, 1 is a fixed mold base; 1a is a fixed mold plate; 1a1 is a fixed mold sliding groove; 1b is a fixed mold insert; 2 is a movable mold base; 2a is a movable mold plate; 2a1 is a first hole; 2a2 is a sliding hole; 2a3 is a limiting surface; 2b is a movable mold insert; 2b1 is a second hole; 3 is a cavity; 4 is a fixed mold ejector block; 4a is a positioning recess; 4b is a insertion hole; 4c is a corresponding surface; 5 is a movable mold ejector block; 6 is an opening plate; 6a is a first groove; 6b is a second groove; 7 is an ejection plate; 8 is a bottom plate; 9 is a connecting plate; 10 is a guide column; 11 is a top rod; 12 is a top block; 13 is a sliding block; 13a is a through hole; 13b is a convex ring; 13c is a wedge surface; 13d is an inclined surface; 14 is a push rod; 15 is a fixing bolt; 16 is an elastic pad; 17 is a fixed mold spring; 18 is a movable mold sliding strip; 19 is a triangular block; 19a is a movable mold sliding groove; 20 is a support column; and 21 is a limiting bolt. DETAILED DESCRIPTION

[0032] The following is a further description of the technical solutions of the application in conjunction with the drawings, but the application is not limited to these embodiments.

[0033] Embodiment I

[0034] As Figure 1As shown, the injection mold comprises a fixed mold base 1 and a movable mold base 2, and a cavity 3 is formed between the fixed mold base 1 and the movable mold base 2. The fixed mold base 1 comprises a fixed mold plate 1a and a fixed mold insert 1b, and a receiving cavity is formed on the bottom surface of the fixed mold plate 1a, and the fixed mold insert 1b is fixed in the receiving cavity. The movable mold base 2 is located below the fixed mold base 1, and the movable mold base 2 comprises a movable mold plate 2a and a movable mold insert 2b, and a mounting cavity is formed on the top surface of the movable mold plate 2a, and the movable mold insert 2b is fixed in the mounting cavity. A fixed mold ejector 4 is slidably arranged on the fixed mold base 1, and a movable mold ejector 5 is slidably arranged on the movable mold base 2. The fixed mold ejector 4 is located below and left of the fixed mold insert 1b, and is located above and left of the movable mold insert 2b, the right upper side of the fixed mold ejector 4 abuts against the fixed mold insert 1b, and the right lower side of the fixed mold ejector 4 abuts against the movable mold insert 2b. The movable mold ejector 5 is located right of the fixed mold ejector 4, the movable mold plate 2a is provided with an ejecting hole one 2a1, the movable mold insert 2b is provided with an ejecting hole two 2b1, the ejecting hole one 2a1 and the ejecting hole two 2b1 form an ejecting hole, and the movable mold ejector 5 is arranged in the shaft hole. The fixed mold insert 1b, the fixed mold ejector 4, the movable mold ejector 5 and the movable mold insert 2b surround the cavity 3, and the plastic is injection molded into the automobile lampshade in the cavity 3.

[0035] As Figure 1As shown, a combined demolding mechanism of an injection mold includes an opening stripper plate 6, which is horizontally arranged and the movable mold base 2 is located between the fixed mold base 1 and the opening stripper plate 6, i.e. the opening stripper plate 6 is below the movable mold plate 2a. A bottom plate 8 is further arranged below the opening stripper plate 6, and a knockout plate 7 is arranged between the opening stripper plate 6 and the bottom plate 8. A connecting plate 9 is further arranged between the bottom plate 8 and the knockout plate 7, the connecting plate 9 is fixedly connected with the knockout plate 7, and the opening stripper plate 6 is fixedly connected with the bottom plate 8. The bottom plate 8 is fixedly connected with a vertically arranged guide column 10, the guide column 10 penetrates the connecting plate 9 and the knockout plate 7, and the connecting plate 9 and the knockout plate 7 can move vertically along the guide column 10. There are two guide columns 10 distributed on the left and right sides of the bottom plate 8, and only the right guide column 10 is shown in the figure. The knockout plate 7 is fixedly connected with a vertically arranged ejector pin 11, the ejector pin 11 penetrates the opening stripper plate 6 and the movable mold base 2 and is fixedly connected with a top block 12, and the top surface of the top block 12 is at the cavity 3. When the movable mold base 2 and the fixed mold base 1 are separated during mold opening, the knockout plate 7 rises and drives the ejector pin 11 to rise, and the top block 12 ejects the product from the movable mold insert 2b, so that the product is smoothly demolded. The ejector pin 11 is provided with a plurality of pins, which are dispersedly arranged in the movable mold base 2, which is beneficial to the smooth taking out of the product, and only one ejector pin 11 and two top blocks 12 are shown in the figure. A parting spring [not shown in the figure] is arranged between the opening stripper plate 6 and the movable mold plate 2a, and there are two parting springs arranged on the left and right ends of the opening stripper plate 6. Under the action of the parting spring, the opening stripper plate 6 has a tendency to move away from the movable mold plate 2a. A limiting bolt 21 is arranged between the opening stripper plate 6 and the movable mold plate 2a, the rod part of the limiting bolt 21 penetrates the opening stripper plate 6 and is threadedly connected with the movable mold plate 2a, the limiting bolt 21 is not tightened, and there is a limiting distance between the head part of the limiting bolt 21 and the opening stripper plate 6. During mold opening, the parting spring acts on the opening stripper plate 6 to make the opening stripper plate 6 move downward, and the opening stripper plate 6 abuts against the head part of the limiting bolt 21 to realize limiting. A plurality of supporting columns 20 are fixedly connected between the bottom plate 8 and the opening stripper plate 6, and the supporting columns 20 penetrate the connecting plate 9 and the knockout plate 7.

[0036] As Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, the left side of the fixed mold plate 1a is provided with an inclined fixed mold chute 1a1, which is inclined towards the movable mold base 2 along a direction from right to left, and the inclination angle of the fixed mold chute 1a1 is generally greater than 25°. The upper end of the fixed mold ejector block 4 is embedded in the fixed mold chute 1a1 and can slide along the fixed mold chute 1a1. The front and rear sides of the fixed mold ejector block 4 have protruding slide bars, and the fixed mold chute 1a1 is fixed with a stop bar below the slide bars, and the slide bars can slide on the stop bar. The movable mold base 2 is provided with a slidable sliding block 13, and the end of the sliding block 13 close to the fixed mold base 1 is fixed with a poking rod 14 inserted into the fixed mold ejector block 4, and the end of the sliding block 13 away from the fixed mold base 1 is fixed with the opening dam plate 6. The end of the sliding block 13 close to the fixed mold base 1 is the top end of the sliding block 13, and the end face of the sliding block 13 close to the fixed mold base 1 is the top end face of the sliding block 13; the end of the sliding block 13 away from the fixed mold base 1 is the bottom end of the sliding block 13, and the end face of the sliding block 13 away from the fixed mold base 1 is the bottom end face of the sliding block 13. The opening dam plate 6 can drive the sliding block 13 to move away from the fixed mold base 1, and when the sliding block 13 slides away from the fixed mold base 1, the poking rod 14 can drive the fixed mold ejector block 4 to slide on the fixed mold base 1 away from the cavity 3. The sliding block 13 is perpendicular to the opening dam plate 6, and the poking rod 14 is inclined away from the cavity 3 along the direction from the sliding block 13 to the fixed mold ejector block 4. The sliding block 13 is generally in the shape of a cuboid, and the poking rod 14 is in the shape of a cylindrical rod. The poking rod 14 is fixedly connected in the sliding block 13 through a fixing bolt 15, the sliding block 13 is provided with an inclined through hole 13a, the hole wall face of the through hole 13a has a protruding ring 13b, the poking rod 14 is inserted into the through hole 13a and abuts on the upper end of the protruding ring 13b, the rod part of the fixing bolt 15 passes through the protruding ring 13b and is threadedly connected with the poking rod 14, and the head part of the fixing bolt 15 abuts on the lower end of the protruding ring 13b. The fixed mold ejector block 4 is provided with an insertion hole 4b corresponding to the poking rod 14, and the top end of the poking rod 14 is inserted into the insertion hole 4b and can slide. The opening dam plate 6 has a groove 6a, and the bottom end of the sliding block 13 is embedded in the groove 6a and is fixedly connected with the opening dam plate 6 through a mounting bolt 1.

[0037] When the injection mold is closed, the top end of the sliding block 13 abuts against the fixed mold ejector block 4 to lock the fixed mold ejector block 4. The side surface of the fixed mold ejector block 4 facing the sliding block 13 is provided with a positioning recess 4a, the top end of the sliding block 13 is inserted into the positioning recess 4a, and an inclined wedge surface 13c is arranged between the top end surface of the sliding block 13 and the side surface of the sliding block 13 close to the cavity 3, the side surface of the positioning recess 4a has a corresponding surface 4c corresponding to the wedge surface 13c, and the corresponding surface 4c is also inclined. The side surface of the sliding block 13 opposite to the wedge surface 13c is provided with an inclined surface 13d, and the inclined surface 13d and the wedge surface 13c are respectively arranged on the left and right sides of the top end of the sliding block 13. The inclined angles and areas of the inclined surface 13d and the wedge surface 13c are different, so that the left and right sides of the sliding block 13 are easily distinguished. The movable mold plate 2a is provided with a sliding hole 2a2 corresponding to the sliding block 13, the sliding hole 2a2 is substantially in the shape of a cuboid, the hole wall surface of the top end of the sliding hole 2a2 is provided with a limiting surface 2a3 corresponding to the inclined surface 13d, and the limiting surface 2a3 is inclined. The top end surface of the sliding block 13, the wedge surface 13c and the inclined surface 13d are all provided with elastic pads 16, after the injection mold is closed, the elastic pad 16 on the top end surface of the sliding block 13 elastically abuts against the bottom surface of the positioning recess 4a, the elastic pad 16 on the wedge surface 13c elastically abuts against the corresponding surface 4c, and the elastic pad 16 on the inclined surface 13d elastically abuts against the limiting surface 2a3. The top end surface of the sliding block 13, the wedge surface 13c and the inclined surface 13d are all provided with embedding grooves, and the elastic pads 16 are embedded into the embedding grooves and fixed by screws. The elastic pads 16 are rubber pads and have elasticity. The side surface of the fixed mold ejector block 4 close to the cavity 3 is provided with a fixed mold spring 17, and the fixed mold spring 17 elastically abuts between the fixed mold ejector block 4 and the fixed mold seat 1 after the injection mold is closed. The side surface of the fixed mold ejector block 4 opposite to the fixed mold insert block 1b is provided with a fixing hole, the fixed mold spring 17 is inserted into the fixing hole, one end of the fixed mold spring 17 abuts against the bottom surface of the fixing hole, and the other end of the fixed mold spring 17 abuts against the fixed mold insert block 1b. The fixed mold spring 17 has two and is arranged side by side in front and back.

[0038] As Figure 1 and Figure 4As shown, the opening damper 6 is connected with the movable die block 5, and the opening damper 6 can drive the sliding block 13 to move away from the fixed die seat 1 and drive the movable die block 5 to move away from the fixed die seat 1. The top end of the movable die block 5 is obliquely arranged to the side of the sliding block 13, the bottom end of the movable die block 5 is fixed with a movable die slide strip 18, and the movable die slide strip 18 is in inverted T-shaped cross section. The opening damper 6 is fixedly connected with a triangular block 19, and the triangular block 19 is inserted into the extraction hole 2a1 of the movable die plate 2a. The opening damper 6 is provided with a groove 6b, and the triangular block 19 is embedded in the groove 6b and fixedly connected with the opening damper 6 through the mounting bolt 2. The top surface of the triangular block 19 is provided with a movable die sliding groove 19a, and the movable die sliding groove 19a is in inverted T-shaped cross section and obliquely arranged downward along the direction from right to left. The movable die slide strip 18 is embedded in the movable die sliding groove 19a and can slide along the movable die sliding groove 19a.

[0039] When the mold is opened, the opening damper 6 moves downward under the action of the parting spring force, and the opening damper 6 drives the sliding block 13 and the triangular block 19 to move downward, the sliding block 13 drives the fixed die block 4 to slide to the left through the push rod 14, and the triangular block 19 drives the movable die block 5 to slide downward through the movable die slide strip 18, that is, the fixed die block 4 and the movable die block 5 simultaneously move away from the cavity 3 to achieve simultaneous demolding, then the fixed die seat 1 and the movable die seat 2 are separated, the ejection plate 7 moves upward, the product is lifted by the ejector pin 11, and the product is separated from the movable die insert 2b. When the mold is closed, the fixed die seat 1 and the movable die seat 2 are folded and the ejector pin 11 is reset, and then the opening damper 6 moves upward to drive the fixed die block 4 and the movable die block 5 to move close to the cavity 3 to achieve simultaneous mold closing. In this way, the mold action can be reduced, the single product production cycle can be shortened, and the production efficiency can be improved. Moreover, the sliding block 13 is arranged in the movable die seat 2, and the push rod 14 is inserted in the fixed die block 4, so that the arrangement of the sliding block 13 and the push rod 14 does not need to increase the mold volume.

[0040] Embodiment two

[0041] The sliding block 13 is not provided with the elastic pad 16, and after the injection mold is closed, the top end surface of the sliding block 13 abuts against the bottom surface of the positioning notch 4a, the wedge surface 13c abuts against the corresponding surface 4c, and the inclined surface 13d abuts against the limiting surface 2a3. The other structures are the same as those in embodiment one.

[0042] Embodiment three

[0043] The push rod 14 is inserted into the through hole 13a and fixed through interference fit, or the push rod 14 is integrally formed on the sliding block 13. The other structures are the same as those in embodiment one.

[0044] Embodiment four

[0045] The sliding block 13 is arranged obliquely to the right relative to the opening plate 6, and the opening plate 6 is fixed with an oblique block, and the oblique block and the bottom end of the sliding block 13 are connected through a reverse T-shaped sliding groove and a sliding bar, similar to the structure between the movable die block 5 and the triangular block 19. The push rod 14 is perpendicular to the opening plate 6, and the top end of the push rod 14 is inserted into the fixed die block 4. After the opening plate 6 moves downward, the oblique block drives the sliding block 13 to slide obliquely downward, that is, the sliding block 13 slides downward and to the left, so that the push rod 14 moves downward and to the left, so that the push rod 14 can drive the fixed die block 4 to slide to the left to realize demolding away from the cavity 3.

[0046] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A combined stripper mechanism of an injection mold, the injection mold comprising a fixed mold base (1) and a movable mold base (2), a cavity (3) being formed between the fixed mold base (1) and the movable mold base (2), a fixed mold stripper (4) being slidably arranged on the fixed mold base (1), a movable mold stripper (5) being slidably arranged on the movable mold base (2), the combined stripper mechanism comprising a parting plate (6), the movable mold base (2) being located between the fixed mold base (1) and the parting plate (6), the parting plate (6) being connected with the movable mold stripper (5), characterized in that, The movable die seat (2) is provided with a slidable sliding block (13), the end of the sliding block (13) close to the fixed die seat (1) is fixed with a shifting rod (14) inserted into the fixed die block (4), the end of the sliding block (13) away from the fixed die seat (1) is connected with the opening flashboard (6), and the opening flashboard (6) can simultaneously drive the sliding block (13) and the movable die block (5) to slide away from the fixed die seat (1), when the sliding block (13) slides away from the fixed die seat (1), the shifting rod (14) can drive the fixed die block (4) to slide away from the cavity (3) on the fixed die seat (1), the sliding block (13) is perpendicular to the opening flashboard (6), and the sliding block (13) is fixed with the opening flashboard (6), the shifting rod (14) is arranged to be inclined to the side away from the cavity (3) along the direction from the sliding block (13) to the fixed die block (4).

2. The combined ejector mechanism of an injection mold according to claim 1, characterized in that, After the injection mold is closed, the end of the sliding block (13) close to the fixed die seat (1) abuts against the fixed die block (4) to lock the fixed die block (4).

3. The combined ejector mechanism of an injection mold according to claim 2, characterized in that, The side of the fixed die block (4) facing the sliding block (13) is provided with a positioning recess (4a), the end of the sliding block (13) close to the fixed die seat (1) is inserted into the positioning recess (4a), and an inclined wedge surface (13c) is arranged between the end face of the sliding block (13) close to the fixed die seat (1) and the side of the sliding block (13) close to the cavity (3), and the side of the positioning recess (4a) has a corresponding surface (4c) corresponding to the wedge surface (13c).

4. The combined ejector mechanism of an injection mold according to claim 3, characterized in that, After the injection mold is closed, the end face of the sliding block (13) close to the fixed die seat (1) abuts against the bottom face of the positioning recess (4a), and the wedge surface (13c) abuts against the corresponding surface (4c).

5. The combined ejector mechanism of an injection mold according to claim 3, wherein, The end face of the sliding block (13) close to the fixed die seat (1) and the wedge surface (13c) are both provided with elastic pads (16), and the elastic pads (16) elastically abut against the fixed die block (4) after the injection mold is closed.

6. The combined ejector mechanism of an injection mold according to claim 1, wherein, The side of the fixed die block (4) close to the cavity (3) is provided with a fixed die spring (17), and the fixed die spring (17) elastically abuts between the fixed die block (4) and the fixed die seat (1) after the injection mold is closed.

7. The combined ejector mechanism of an injection mold according to claim 1, wherein The shifting rod (14) is fixedly connected in the sliding block (13) through a fixing bolt (15), the sliding block (13) is provided with an inclined through hole (13a), the hole wall face of the through hole (13a) has a convex ring (13b), the shifting rod (14) is inserted into the through hole (13a) and abuts against one end of the convex ring (13b), the rod part of the fixing bolt (15) is threadedly connected with the shifting rod (14) after penetrating through the convex ring (13b), and the head part of the fixing bolt (15) abuts against the other end of the convex ring (13b).

8. The combined ejector mechanism of an injection mold according to claim 1, wherein, The opening flashboard (6) has a groove one (6a), and the end of the sliding block (13) away from the fixed die seat (1) is embedded into the groove one (6a).

9. The combined ejector mechanism of an injection mold according to claim 1, wherein, The sliding block (13) is in the shape of a cuboid, and the shifting rod (14) is in the shape of a cylinder.

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