CN113290791A

CN113290791A - Porous plastic mold capable of parting and demolding twice and demolding method thereof

Info

Publication number: CN113290791A
Application number: CN202110410568.0A
Authority: CN
Inventors: 张少飞; 蒋方荣
Original assignee: Senjun Precision Manufacturing Shenzhen Co ltd
Current assignee: Senjun Precision Manufacturing Shenzhen Co ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-08-24

Abstract

The invention discloses a porous plastic mold for twice parting and demolding, which comprises a push plate, wherein a product cavity is arranged in the push plate, a first supporting plate and a second supporting plate are sequentially arranged below the push plate, a first insert is arranged on the first supporting plate, one end of the first insert is fixedly connected with the first supporting plate, the other end of the first insert is inserted into the product cavity, a second insert is arranged on the second supporting plate, one end of the second insert is fixedly connected with the second supporting plate, and the other end of the second insert penetrates through the first supporting plate and then is inserted into the product cavity; the automatic locking device further comprises a locking structure used for limiting and driving the push plate, the first supporting plate and the second supporting plate, and the locking structure is connected with the push plate, the first supporting plate and the second supporting plate respectively. The invention reduces the number of inserts, the installation difficulty of the die and the assembly cost of the die. The invention also discloses a demoulding method of the porous plastic part mould, which adopts a demoulding mode of twice mould parting and once ejection, reduces the possibility of deformation of plastic parts and improves the yield of mould production.

Description

Porous plastic mold capable of parting and demolding twice and demolding method thereof

Technical Field

The invention relates to the technical field of plastic molds, in particular to a porous plastic mold capable of being subjected to twice parting and demolding and a demolding method thereof.

Background

Porous plastic products are widely used in various industries, especially in medical industry, and are indispensable, for example, transportation boxes of various sampling tubes, etc.

As shown in fig. 1-3, in the production of such products, the existing plastic molds are generally designed as independent inserts, and when the plastic product is released, the integral push plate pushes the plastic product out of the product cavity.

The existing plastic molds generally have the following problems:

1. the independent insert is inconvenient to assemble and transport water, the die is difficult to mount, and the production cost of the die is improved invisibly.

2. The honeycomb structure design of whole push pedal, middle net interval is very little, only 0.3mm usually, and the processing degree of difficulty is very big.

3. The grid in the middle of the whole push plate is easy to deform, so that the plastic part product is not ejected out of balance, and the reject ratio is higher.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a porous plastic mold for twice parting and demolding, and particularly provides the following technical scheme:

a porous plastic mold for twice parting and demolding comprises a push plate, wherein a product cavity is arranged in the push plate, a first supporting plate and a second supporting plate are sequentially arranged below the push plate, a first insert is arranged on the first supporting plate, one end of the first insert is fixedly connected with the first supporting plate, the other end of the first insert is inserted into the product cavity, a second insert is arranged on the second supporting plate, one end of the second insert is fixedly connected with the second supporting plate, and the other end of the second insert penetrates through the first supporting plate and then is inserted into the product cavity; the automatic feeding device is characterized by further comprising a button machine structure used for limiting and driving the push plate, the first supporting plate and the second supporting plate, and the button machine structure is connected with the push plate, the first supporting plate and the second supporting plate respectively.

Furthermore, a first fixing plate is arranged between the first supporting plate and the pushing plate, the first fixing plate is fixedly connected with the first supporting plate, a second fixing plate is arranged between the first supporting plate and the second supporting plate, and the second fixing plate is fixedly connected with the second supporting plate; the utility model discloses a product mould cavity, including first layer board, second layer board, ejector pin board, second fixed plate, first layer board and first fixed plate, the below of second layer board is equipped with the thimble board, the lower surface of thimble board is connected with the kicking rod, be equipped with the thimble on the thimble board, the one end of thimble with thimble board fixed connection, the other end passes in proper order the second layer board the second fixed plate first layer board with insert behind the first fixed plate product mould cavity.

The supporting plate further comprises a bottom plate, wherein a guide post is arranged on the bottom plate, one end of the guide post is fixedly connected with the bottom plate, and the other end of the guide post penetrates through the ejector plate and then is fixedly connected with the second supporting plate.

Further, the buckling machine structure comprises a buckling plate, the buckling plate is fixedly connected with the second supporting plate, a push rod is arranged on the buckling plate in a sliding mode, the push rod is fixedly connected with the ejector plate, a first clamping groove is formed in the push plate, a first limiting block is arranged in the first clamping groove, a second clamping groove is formed in the first supporting plate, a second limiting block is arranged in the second clamping groove, and end faces of the first limiting block and the second limiting block are respectively abutted against the buckling plate; a third clamping groove is formed in the push rod, the bottom surface of the first limiting block can abut against the upper end face of the push rod, and the bottom surface of the second limiting block can abut against the lower surface of the inner wall of the third clamping groove; the buckle is arranged on the push rod and is provided with a first inclined plane and a second inclined plane in the motion direction, the upper surface of the first limiting block is provided with a third inclined plane matched with the first inclined plane, and the upper surface of the second limiting block is provided with a fourth inclined plane matched with the second inclined plane.

Furthermore, the first limiting block comprises a first guide block and a first sliding block, the first guide block is fixed in the first clamping groove, a first sliding block accommodating groove is formed in the first guide block, one end of the first sliding block is inserted into the first sliding block accommodating groove and is in sliding limiting connection with the first guide block, the third inclined surface is arranged on the upper surface of the first sliding block, the end surface of the first sliding block is abutted to the buckle plate, a first spring hole is formed in the first sliding block, a first spring is arranged in the first spring hole, and the other end of the first spring is abutted to the inner side wall of the first sliding block accommodating groove; the second stopper includes second guide block and second slider, the second guide block is fixed in the second draw-in groove, be equipped with second slider holding tank in the second guide block, the one end of second slider inserts in the second slider holding tank and with second guide block slip spacing connection, the fourth inclined plane sets up the upper surface of second slider, the terminal surface of second slider with buckle looks butt, be equipped with second spring hole on the second slider, the downthehole second spring that is equipped with of second spring, the other end of second spring with the inside wall butt of second slider holding tank.

Furthermore, the number of the button machine structures is two, and the two button machine structures are distributed in a bilateral symmetry mode relative to the perpendicular bisector of the first supporting plate.

Furthermore, the first insert and the second insert are distributed in a staggered manner towards the left side and the right side relative to the perpendicular bisector of the first supporting plate, and the first insert and the second insert are distributed in a bilateral symmetry manner relative to the perpendicular bisector of the first supporting plate.

Furthermore, the number of the first insert and the number of the second insert are respectively 6, and 8 insert stand columns are arranged at one end, inserted into the product cavity, of each of the first insert and the second insert.

In another aspect, the present invention further provides a demolding method for producing a plastic product by using the above two-parting demolding porous plastic mold, comprising:

typing for the first time: the demolding thrust acts on the ejector rod, the ejector plate is pushed to move for a distance of S1, the first supporting plate and the push plate are pushed to move for a distance of S1 through the push rod, the second insert is separated from the porous plastic part product in the product cavity for a distance of S1, and after the push plate moves for a distance of S1, the second inclined surface abuts against the fourth inclined surface;

and (3) second typing: continuing to push the ejector plate to move for a distance S2, and pushing the ejector plate to move for a distance S2 through the push rod, so that the first insert is separated from the porous plastic product in the product cavity by a distance S2, wherein after the ejector plate moves for a distance S1+ S2, the first inclined surface abuts against the third inclined surface, and the ejector pin abuts against the porous plastic product in the product cavity;

ejecting a plastic part product: and continuing to push the ejector plate to move for S3 distance, and pushing the porous plastic part product in the product cavity to move for S3 distance by the ejector pin.

Further, in the second parting step, the second sliding block is extruded by the second inclined surface and retracted into the second sliding block accommodating groove, so that the second sliding block is separated from the third clamping groove; in the step of ejecting the plastic product, the first sliding block is extruded by the first inclined surface and retracted into the first sliding block accommodating groove, so that the first sliding block is separated from the end surface of the push rod.

Compared with the prior art, the invention has the following beneficial effects:

1. the number of the inserts is reduced, the mounting difficulty of the die is reduced, and the assembly cost of the die is reduced.

2. The first supporting plate and the second supporting plate are used as ejection parts, the processing is simple, the strength is enough, the deformation is not easy, the service life of the die is greatly prolonged, and the die maintenance cost is reduced.

3. Be equipped with the fixed plate respectively above first layer board and second layer board, improved the stability of mould action.

4. And the twice parting and staged demoulding are adopted, so that the possibility of deformation of a plastic product is reduced, and the yield of the die production is improved.

Drawings

FIG. 1 is a schematic view of a porous plastic mold according to the prior art;

FIG. 2 is a schematic diagram of a push plate structure in the prior art;

FIG. 3 is a schematic view of a prior art insert configuration;

FIG. 4 is a schematic view of the overall structure of the two-step parting and demolding porous plastic mold of the present invention;

fig. 5 is a schematic view of the overall structure of the first insert and the second insert in an embodiment of the present invention;

FIG. 6 is a schematic view of the entire structure of the fastening machine according to the embodiment of the present invention;

FIG. 7 is an exploded view of the buckle mechanism according to the embodiment of the present invention;

FIG. 8 is a schematic structural view of the two-parting and demolding porous plastic mold of the present invention after the first parting;

FIG. 9 is a schematic structural view of the two-parting-demolding porous plastic mold of the present invention after the second parting;

FIG. 10 is a schematic structural diagram of a porous plastic mold plastic part product subjected to two-time parting and demolding according to the present invention after demolding.

Detailed Description

To further illustrate the technical means and effects of the present invention, the following describes a preferred embodiment of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In actual production, various porous plastic products exist, and the invention is applicable to plastic products with any number of holes. The beneficial effects of the present invention will be fully described below by taking a plastic mold for producing a 96-hole plastic product as an example.

As shown in fig. 4-7, a porous plastic mold for twice parting and demolding comprises a push plate 1 and a buckle structure, wherein a product cavity 2 is arranged in the push plate 1, a hot runner and a cooling water runner are arranged in the product cavity 2, the hot runner is used for feeding during injection molding, a first fixing plate 3, a first supporting plate 4, a second fixing plate 5, a second supporting plate 6 and an ejector plate 7 are sequentially arranged below the push plate 1, wherein the first fixing plate 3 is fixedly connected with the first supporting plate 4, and the second fixing plate 5 is fixedly connected with the second supporting plate 6. The button machine structure is connected with the push plate 1, the first supporting plate 4, the second supporting plate 6 and the ejector plate 7 respectively and is used for limiting and linking the push plate 1, the first supporting plate 4, the second supporting plate 6 and the ejector plate 7.

The first supporting plate 4 is provided with a first insert 8, one end of the first insert 8 is fixedly connected with the first supporting plate 4, and the other end of the first insert 8 penetrates through the first fixing plate 3 and then is inserted into the product cavity 2. A second insert 9 is arranged on the second supporting plate 6, one end of the second insert 9 is fixedly connected with the second supporting plate 6, and the other end of the second insert 9 sequentially penetrates through the second fixing plate 5, the first supporting plate 4 and the first fixing plate 3 and then is inserted into the product cavity 2. The number of the first insert 8 and the number of the second insert 9 are respectively 6, and 8 insert columns 10 are arranged at one end of each of the first insert 8 and the second insert 9, which is inserted into the product cavity 2. The first insert 8 and the second insert 9 are distributed in a staggered manner towards the left side and the right side relative to the perpendicular bisector of the first supporting plate 4, and the first insert 8 and the second insert 9 are distributed in a bilateral symmetry manner relative to the perpendicular bisector of the first supporting plate 4; specifically, the left and right sides of the perpendicular bisector of the first pallet 4 are adjacent to each other to form the second insert 9, that is, the left and right sides of the perpendicular bisector of the first pallet 4 are adjacent to each other to form the first second insert 9, the second first insert 8, and so on. The first insert 8 and the second insert 9 have 96 insert pillars 10 in total, and are used for forming holes of a plastic product 11 during injection molding production of a mold.

The lower surface of thimble board 7 is connected with ejector rod 12, and ejector rod 12 links to each other with the drive arrangement of injection molding machine when the production of moulding plastics, is equipped with thimble 13 on the thimble board 7, and the one end and the thimble board 7 fixed connection of thimble 13, the other end insert in product die cavity 2 after passing second layer board 6, second fixed plate 5, first layer board 4 and first fixed plate 3 in proper order. The ejector pin 13 is used for ejecting the plastic part product 11 from the product cavity 2 when the plastic part product 11 is demoulded, so that the demoulding is facilitated.

An ejector pin supporting plate 14 and a bottom plate 15 are sequentially arranged below the ejector pin plate 7, and the ejector pin supporting plate 14 is fixedly connected with the ejector pin plate 7; the bottom plate 15 is used for fixing the second supporting plate 6 and the second fixing plate 5, one surface of the bottom plate 15 is fixedly connected with an injection molding machine during injection molding, and the other surface of the bottom plate is provided with a guide post 16; one end of the guide post 16 is fixedly connected with the bottom plate 15, and the other end of the guide post passes through the ejector pin supporting plate 14 and the ejector pin plate 7 in sequence and then is fixedly connected with the second supporting plate 6.

The button machine structure includes buckle 17, push rod 18, first stopper 19 and second stopper 20, buckle 17 and second layer board 6 fixed connection, and buckle 17 medial surface is equipped with spout 171, and push rod 18 slides and sets up on spout 171, and the one end and the thimble layer board 14 fixed connection of push rod 18. The side edge of the push plate 1 is provided with a first clamping groove 101, the first limiting block 19 is arranged in the first clamping groove 101, the side edge of the first supporting plate 4 is provided with a second clamping groove 401, the second limiting block 20 is arranged in the second clamping groove 401, and the end faces of the first limiting block 19 and the second limiting block 20 are respectively abutted to the inner side face of the buckle plate 17. The push rod 18 is provided with a third groove 181, and when the push rod 18 slides in the slide groove 171, the bottom surface of the first stopper 19 can abut against the upper end surface of the push rod 18, and the bottom surface of the second stopper 20 can abut against the lower surface of the inner wall of the third groove 181. The buckle 17 is provided with a first inclined plane 172 and a second inclined plane 173 along the moving direction of the push rod 18, the upper surface of the first limiting block 19 is provided with a third inclined plane 191 adaptive to the first inclined plane 172, the upper surface of the second limiting block 20 is provided with a fourth inclined plane 201 adaptive to the second inclined plane 173, when the push rod 18 slides in the sliding groove 171, the first inclined plane 172 can abut against the third inclined plane 191, and the second inclined plane 173 can abut against the fourth inclined plane 201. In the present embodiment, the first inclined surface 172, the second inclined surface 173, the third inclined surface 191 and the fourth inclined surface 201 are all flat surfaces, and obviously, in other embodiments, the first inclined surface 172, the second inclined surface 173, the third inclined surface 191 and the fourth inclined surface 201 may also be circular arc surfaces or circular arc-like multi-surface structures.

First stopper 19 includes first guide block 192 and first slider 193, first guide block 192 is fixed in first draw-in groove 101, be equipped with first slider holding tank 194 in the first guide block 192, the one end of first slider 193 inserts in first slider holding tank 194 and with first guide block 192 slip limit connection, third inclined plane 191 sets up the upper surface that is close to this one end of buckle 17 at first slider 193, the terminal surface of first slider 193 and the medial surface looks butt of buckle 17, be equipped with first spring hole on the first slider 193, be equipped with first spring 21 in the first spring hole, the other end of first spring 21 and the inside wall butt of first slider holding tank 194. The second limiting block 20 comprises a second guide block 202 and a second sliding block 203, the second guide block 202 is fixed in a second clamping groove 401, a second sliding block accommodating groove 204 is formed in the second guide block 202, one end of the second sliding block 203 is inserted into the second sliding block accommodating groove 204 and is in sliding limiting connection with the second guide block 202, a fourth inclined surface 201 is formed by the fact that the second sliding block 203 is close to the upper surface of one end of the buckling plate 17, the end surface of the second sliding block 203 is abutted to the inner side surface of the buckling plate 17, a second spring hole is formed in the second sliding block 203, a second spring 22 is arranged in the second spring hole, and the other end of the second spring 22 is abutted to the inner side wall of the second sliding block accommodating groove 204.

When the plastic product 11 is demolded, during the movement of the push rod 18 in the sliding groove 171, the second inclined surface 173 is in contact with the fourth inclined surface 201 to press the second slider 203 to be separated from the third slot 181, and the first inclined surface 172 is in contact with the third inclined surface 191 to press the first slider 193 to be separated from the upper end surface of the push rod 18.

When the plastic mold is reset, in the process that the push rod 18 moves in the sliding groove 171, the first spring 21 is reset, and drives the first sliding block 193 to extend out of the first sliding block accommodating groove 194 until the end surface of the first sliding block 193 abuts against the inner side wall of the buckle 17; the second spring 22 is reset to drive the second slider 203 to extend out of the second slider accommodating groove 204 until the end surface of the second slider 203 abuts against the inner side wall of the buckle 17.

In order to make the plastic mold move more stably and smoothly during demolding, in this embodiment, the two buckling structures are arranged and are respectively distributed in a bilateral symmetry manner relative to the perpendicular bisector of the first supporting plate 4. Of course, in other embodiments, the number of sear structures can be 4, 8, etc.

The process of producing the plastic part product by the porous plastic mould with twice parting and demoulding comprises the following steps:

during injection molding production, the bottom plate 15 is fixed on an injection molding machine, the push plate 1, the first fixing plate 3, the first supporting plate 4, the second fixing plate 5 and the second supporting plate 6 are sequentially abutted, the ejector pin supporting plate 14 is abutted with the bottom plate 15, and the ejector rod 12 is connected with the injection molding machine. The supplied materials enter the product cavity 2 from the hot runner, and after cooling and solidification, injection molding is completed.

After the injection molding of the plastic part product 11 produced by the 96-hole plastic mold is completed, the demolding process of the plastic part product 11 is as follows:

firstly, as shown in fig. 8, a demolding pushing force of the injection molding machine acts on the ejector rod 12 to push the ejector pin support plate 14 and the ejector pin plate 7 to move for a distance of S1, at this time, the push rod 18 also moves for a distance of S1 in the sliding groove 171, and during the movement of the push rod 18, the first limiting block 19, the second limiting block 20, the first support plate 4, the first fixing plate 3 and the push plate 1 are pushed to move for a distance of S1, so that the second insert 9 is separated from the plastic part product S1 in the product cavity 2; after the first supporting plate 4 moves by the distance of S1, completing the first parting of the plastic mold, i.e. the first supporting plate 4 is separated from the second fixing plate 5 by the distance of S1; after the push plate 1 moves for a distance S1, the second inclined surface 173 abuts against the fourth inclined surface 201.

Secondly, as shown in fig. 9, the ejector rod 12 pushes the ejector retainer plate 14 and the ejector plate 7 to move continuously for a distance of S2, and the push rod 18 pushes the first stopper 19 and the push plate 1 to move for a distance of S2, so that the first insert 8 is separated from the plastic product S2 in the product cavity 2, and the second insert 9 is separated from the plastic product S1+ S2 in the product cavity 2. After the push plate 1 moves by the distance of S1+ S2, the second parting of the plastic mold is completed, i.e., the first supporting plate 4 is separated from the second fixing plate 5 by the distance of S1, and the push plate 1 is separated from the first fixing plate 3 by the distance of S2. After the push plate 1 moves by a distance of S1+ S2, the first inclined surface 172 abuts against the third inclined surface 191, and the thimble 13 abuts against the plastic product 11 in the product cavity 2. In the process, the second inclined surface 173 presses the second slider 203 to retract into the second slider receiving groove 204, so that the second slider 203 is separated from the third clamping groove 181; therefore, the first fixing plate 3 and the first palette 4 are not moved during the second mold parting process.

Thirdly, as shown in fig. 10, the ejector rod 12 continues to push the ejector pin supporting plate 14 and the ejector pin plate 7 to move for a distance of S3, and the ejector pins 13 push the plastic product 11 in the product cavity 2 to move for a distance of S3, so as to push the plastic product out of the product cavity 2, thereby completing product demoulding. In the process, the first inclined surface 172 presses the first slider 193 to retract into the first slider accommodating groove 194, so that the first slider 193 is separated from the upper end surface of the push rod 18; therefore, the ejector pin 13 does not move the push plate 1 during the process of pushing out the plastic product 11.

It should be noted that the aforementioned S1 distance, S2 distance and S3 distance are preset by the control program of the injection molding machine according to the heights of different plastic products; it is understood that any numerical value is applicable to S1, S2, and S3.

In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. A porous plastic mold for twice parting and demolding is characterized by comprising a push plate, wherein a product cavity is arranged in the push plate, a first supporting plate and a second supporting plate are sequentially arranged below the push plate, a first insert is arranged on the first supporting plate, one end of the first insert is fixedly connected with the first supporting plate, the other end of the first insert is inserted into the product cavity, a second insert is arranged on the second supporting plate, one end of the second insert is fixedly connected with the second supporting plate, and the other end of the second insert penetrates through the first supporting plate and then is inserted into the product cavity;

the automatic feeding device is characterized by further comprising a button machine structure used for limiting and driving the push plate, the first supporting plate and the second supporting plate, and the button machine structure is connected with the push plate, the first supporting plate and the second supporting plate respectively.

2. The two-time parting and demolding porous plastic mold as claimed in claim 1, wherein a first fixing plate is arranged between the first supporting plate and the pushing plate, the first fixing plate is fixedly connected with the first supporting plate, a second fixing plate is arranged between the first supporting plate and the second supporting plate, and the second fixing plate is fixedly connected with the second supporting plate;

the utility model discloses a product mould cavity, including first layer board, second layer board, ejector pin board, second fixed plate, first layer board and first fixed plate, the below of second layer board is equipped with the thimble board, the lower surface of thimble board is connected with the kicking rod, be equipped with the thimble on the thimble board, the one end of thimble with thimble board fixed connection, the other end passes in proper order the second layer board the second fixed plate first layer board with insert behind the first fixed plate product mould cavity.

3. The two-time parting and demolding porous plastic mold as claimed in claim 2, further comprising a bottom plate, wherein a guide post is arranged on the bottom plate, one end of the guide post is fixedly connected with the bottom plate, and the other end of the guide post passes through the ejector plate and then is fixedly connected with the second supporting plate.

4. The porous plastic mold for twice parting and demolding as claimed in claim 3, wherein the fastener structure comprises a fastening plate, the fastening plate is fixedly connected with the second supporting plate, a push rod is slidably arranged on the fastening plate, the push rod is fixedly connected with the ejector plate, a first clamping groove is arranged on the push plate, a first limiting block is arranged in the first clamping groove, a second clamping groove is arranged on the first supporting plate, a second limiting block is arranged in the second clamping groove, and end faces of the first limiting block and the second limiting block are respectively abutted against the fastening plate;

a third clamping groove is formed in the push rod, the bottom surface of the first limiting block can abut against the upper end face of the push rod, and the bottom surface of the second limiting block can abut against the lower surface of the inner wall of the third clamping groove;

the buckle is arranged on the push rod and is provided with a first inclined plane and a second inclined plane in the motion direction, the upper surface of the first limiting block is provided with a third inclined plane matched with the first inclined plane, and the upper surface of the second limiting block is provided with a fourth inclined plane matched with the second inclined plane.

5. The porous plastic mold for two-time parting and demolding as claimed in claim 4, wherein the first limiting block comprises a first guide block and a first slide block, the first guide block is fixed in the first clamping groove, a first slide block accommodating groove is formed in the first guide block, one end of the first slide block is inserted into the first slide block accommodating groove and is in sliding limiting connection with the first guide block, the third inclined surface is arranged on the upper surface of the first slide block, the end surface of the first slide block is abutted against the buckle plate, a first spring hole is formed in the first slide block, a first spring is arranged in the first spring hole, and the other end of the first spring is abutted against the inner side wall of the first slide block accommodating groove;

the second stopper includes second guide block and second slider, the second guide block is fixed in the second draw-in groove, be equipped with second slider holding tank in the second guide block, the one end of second slider inserts in the second slider holding tank and with second guide block slip spacing connection, the fourth inclined plane sets up the upper surface of second slider, the terminal surface of second slider with buckle looks butt, be equipped with second spring hole on the second slider, the downthehole second spring that is equipped with of second spring, the other end of second spring with the inside wall butt of second slider holding tank.

6. The two-part molding out cellular plastic mold according to claim 5, wherein there are two said fastener structures, and two said fastener structures are disposed in bilateral symmetry with respect to the perpendicular bisector of said first pallet.

7. The two-part, demolded, cellular plastic mold according to claim 6, wherein the first insert and the second insert are staggered left and right with respect to the perpendicular bisector of the first pallet, and the first insert and the second insert are symmetrically distributed left and right with respect to the perpendicular bisector of the first pallet.

8. The two-part, demolded, cellular plastic mold according to claim 7, wherein 6 each of the first and second inserts have 8 insert posts at the end of each of the first and second inserts that is inserted into the product cavity.

9. A method of producing a porous molded article using the two-part mold-released porous plastic mold according to any one of claims 5 to 8, comprising:

10. The method of demolding a porous molded article as set forth in claim 9, wherein in the second parting step, the second slide is pressed by the second inclined surface to retract into the second slide-receiving groove, so that the second slide is disengaged from the third engaging groove;

in the step of ejecting the plastic product, the first sliding block is extruded by the first inclined surface and retracted into the first sliding block accommodating groove, so that the first sliding block is separated from the end surface of the push rod.