CN218838449U - Injection mold for molding high-rib plate shell - Google Patents

Abstract

The utility model provides an injection mold for shaping high gusset casing, including the preceding diaphragm base, preceding template, back template, thimble board and the back diaphragm base that set gradually, the high gusset casing includes the cavity bottom plate and outside-in's that extends to one side on the cavity bottom plate shell, gusset and inner shell, be equipped with respectively on preceding template, the back template and be used for the shaping preceding mould benevolence and the back mould benevolence of high gusset casing, set up the different parts that a plurality of mold inserts are used for shaping high gusset casing on the back mould benevolence, make ejecting in-process high gusset casing step-by-step carry out the drawing of patterns through the motion stroke that sets up a plurality of thimble boards and control each thimble board. The injection mold for molding the high rib plate shell in the scheme utilizes the mold structure to separate different surfaces of a product from the mold step by step, avoids short shot and glue shortage of the product, avoids pulling and cracking in demolding due to large mold sticking force, reduces the fraction defective of the product and saves the cost.

Description

Injection mold for molding high rib plate shell

Technical Field

The utility model belongs to the technical field of injection mold, especially, relate to an injection mold for shaping high gusset casing.

Background

Injection molding is a widely used processing method due to its suitability for mass production of complex structures and low production cost, and plastic products subjected to injection molding are widely seen in the fields of daily life and the like along with the increasingly excellent mechanical properties, corrosion resistance, insulation and the like of polymer materials. Plastic articles of varying shapes also place higher demands on the design of the mold.

For the plastic shell with the high rib plate structure, the rib plate is deep, the contact area between the surface and the mold is large, and the plastic shell has large die bonding force, so that the plastic shell is easy to strain and pull to crack during ejection, multiple times of simulation are needed in the mold design stage, the mold manufacturing cost is increased, especially, the appearance requirement of people on plastic products is higher and higher, a plurality of shells require high light surfaces, the product reject ratio is greatly increased due to the large die bonding force, the material waste is caused, and the production cost of manufacturers is increased. Overcoming this problem requires, in addition to an optimal choice of injection material, a more important optimization of the mold structure.

Therefore, there is a need for an injection mold which is beneficial for forming a high rib shell, and the production quality of the high rib shell is structurally avoided.

SUMMERY OF THE UTILITY MODEL

The utility model provides an injection mold for shaping high gusset casing can improve product size precision and product surface quality greatly.

Other objects and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

In order to achieve the above-mentioned part or all purposes or other purposes, the utility model provides an injection mold for shaping high gusset casing, including the preceding die bed, preceding template, back template, thimble board and the back die bed that set gradually, high gusset casing includes the cavity bottom plate and the outside-in who extends to one side on the cavity bottom plate distributes shell, gusset and inner shell, be equipped with respectively on preceding template, the back template and be used for shaping the preceding mould benevolence and the back mould benevolence of high gusset casing;

an ejection block is arranged on the rear mold core corresponding to the bottom of the outer shell, an inner insert is arranged at the position corresponding to a deep cavity between the inner shell and the rib plate, an outer insert is arranged at the position corresponding to the deep cavity between the outer shell and the rib plate, and a rear mold insert is arranged at the position corresponding to the hollow bottom plate;

the ejector plate comprises a first ejector plate, a second ejector plate and a third ejector plate which are sequentially arranged, the first ejector plate is attached to the rear mold base plate, an ejector rod of the injection molding machine acts on the third ejector plate, and the first ejector plate, the second ejector plate and the third ejector plate are respectively provided with a first ejector pin, a second ejector pin and a third ejector pin;

the first ejector pin is connected with the inner insert, the second ejector pin penetrates through the inner insert and is attached to the hollow bottom plate, and the third ejector pin is connected with the ejection block;

and the two sides of the ejector plate are provided with limiting and connecting mechanisms which control the ejection strokes of the second ejector plate and the third ejector plate through mechanical structures.

After injection molding is completed, in the movement process of an ejector rod of an injection molding machine, the movement strokes of a first ejector plate, a second ejector plate and a third ejector plate are different under the action of a limiting connecting mechanism, so that the surface of a hollow bottom plate and a mold are subjected to step-by-step demolding between a product shell and a rib plate, between the rib plate and an inner shell and between the surface of the hollow bottom plate and the mold, the product is prevented from short-shot glue shortage and pulling and cracking in demolding, the reject ratio of the product is reduced, and the cost is saved.

The inner shell and the deep cavity between the rib plates are internally provided with a plurality of sunken parts, local inserts are arranged on the inner inserts corresponding to the sunken parts and used for forming the sunken parts, and one ends of the local inserts corresponding to the ejector plate are connected to the second ejector plate. Because the inner insert is ejected by the first ejector pin, the local insert is connected to the second ejector plate, namely the surface of the product between the rib plate and the inner shell is also subjected to step-by-step demoulding, the adsorption force of the mould on the product is gradually reduced, and the surface quality of the product is improved.

When the inner shell is connected with the rib plate through the reinforcing rib, the second ejector pin is attached to the reinforcing rib. The strengthening rib is used for improving product intensity, under the reinforcing rib condition, utilizes the structure setting of product strengthening rib to inlay shape and quantity, optimizes the mould structure.

The front die core is provided with a front die insert for molding the hollow bottom plate, the front die insert is installed on the front die bottom plate, the front die bottom plate is connected with the front template in a sliding mode, and the front template is connected with the rear template through a mechanical shutter. In the process of opening the mold, the front template moves together with the rear template under the connection of the mechanical shutter, so that the front mold insert is firstly separated from the product, other parts of the front mold core are not separated from the product, the mechanical shutter is separated along with the increase of the tensile force, the front template is static in the subsequent mold opening motion, namely the demolding of the product and the front mold is divided into two steps, the pulling damage and the pulling crack are avoided, and the surface quality of the product is improved.

The front mold comprises a front mold base plate and is characterized in that a first distance screw is arranged on the front mold base plate, a stepped hole is formed in the corresponding position of the front mold plate, and the front mold plate slides at a fixed distance along the first distance screw in the mold opening and closing process, so that the separation distance between the front mold plate and the front mold base plate is limited.

The third thimble board contains threaded connection's thimble panel and thimble bottom plate, the centre gripping of third thimble in thimble panel with between the thimble bottom plate, be favorable to the installation and the dismantlement of thimble, the second thimble board with third thimble plate structure is the same.

The injection mold for molding the high rib plate shell further comprises a limiting mechanism for limiting the movement stroke of the ejector rod of the injection molding machine, the limiting mechanism comprises a second distance screw and a stepped hole formed in the ejector plate, and in the ejection process of the ejector rod of the injection molding machine, the stepped surface of the second distance screw is attached to the stepped surface of the stepped hole to prevent the ejector rod of the injection molding machine from moving.

The outer surface of the second distance screw is sleeved with a stepped sleeve, and in the ejection process of an ejector rod of the injection molding machine, the stepped surface of the stepped sleeve is attached to the stepped surface of the stepped hole, so that the ejector rod of the injection molding machine is prevented from moving, the use strength of the limiting mechanism is improved, and the production life of a mold is ensured.

The limit connecting mechanism comprises a first limit connecting mechanism for controlling the ejection stroke of the first ejector pin plate and a second limit connecting mechanism for controlling the ejection stroke of the second ejector pin plate; the first limiting and connecting mechanism comprises a fixed block, a clamping hook and a movable block, one end of the fixed block is fixedly connected to the rear mold bottom plate, a sliding groove used for containing the clamping hook is formed in the ejection direction, one end of the clamping hook is fixedly connected to the third ejector plate, the movable block is transversely and movably mounted on the first ejector plate through an elastic piece, the fixed block acts on the movable block in the ejection/retreating process of an ejector rod of the injection molding machine so as to switch the clamping/disengaging of the clamping hook and the movable block, the first ejector plate and the second ejector plate are in a connection state and move together in the clamping state, the movement stroke of the first ejector plate is stopped in the disengaging state, and the second ejector plate continues to move; the second limiting connection mechanism is the same as the first limiting connection mechanism in structure, the movable block is movably mounted on the second ejector plate along the transverse direction through the elastic piece, at the moment, the second ejector plate and the third ejector plate are in a connected state and move together under the clamping state of the movable block, the movement stroke of the second ejector plate is stopped under the separation state, and the third ejector plate continues to move under the action of the ejector rod.

In the first limiting and connecting mechanism, a first inclined surface is arranged on one side, away from the rear die bottom plate, of the fixed block and opposite to the first ejector plate, a second inclined surface is arranged on the end face, facing the fixed block, of the movable block, in the ejection/retraction process of an ejection rod of the injection molding machine, the second inclined surface is abutted against or away from the first inclined surface to enable the movable block to move transversely, so that the clamping/disengagement of the clamping hook and the movable block is switched, the movable block moves through the contact of the first inclined surface and the second inclined surface and is separated from the clamping hook, the movable block is automatically reset by an elastic piece in the retraction process of the ejection rod of the injection molding machine, the clamping/disengagement of the clamping hook is controlled through a mechanical structure of the die, and no additional power source is needed; the second limiting and connecting mechanism is the same as the first limiting and connecting mechanism in structure, a first inclined plane is arranged in the second limiting and connecting mechanism, one side, far away from the rear die bottom plate, of the fixing block is opposite to the second ejector plate, and the action principle of the second limiting and connecting mechanism is the same as that of the first limiting and connecting mechanism.

Compared with the prior art, the beneficial effects of the utility model mainly include:

1. the utility model provides an injection mold for shaping high gusset casing through set up outer mold insert, interior mold insert, back mould mold insert on back mould benevolence and through first thimble board, second thimble board, the action of third thimble board substep, makes different surface substeps of product and mould separation, avoids the product to penetrate the starved, because of the mould sticking force is pulled in the drawing of patterns greatly and is split, reduces the defective rate of product, practices thrift the cost.

2. The utility model provides an injection mold for shaping high gusset casing through set up the front mould mold insert in the front on the template to slide the front bezel and set up on the front mould bottom plate, divide into two steps with the drawing of patterns of product and front mould, avoid pulling the strain and split, improve product surface quality.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a high gusset shell in an embodiment of the present invention;

fig. 2 is a top view of a rear mold of an injection mold for molding a high rib plate shell in the embodiment of the present invention;

FIG. 3 isbase:Sub>A schematic sectional view taken along the line A-A in FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is an enlarged view taken at D in FIG. 4;

fig. 6 is a schematic structural view of the fixing block and the hook in fig. 5.

Reference numerals: 100-high rib housing, 101-housing, 102-rib, 103-inner housing, 104-reinforcing rib, 1-front die base plate, 2-front die pad plate, 3-front die plate, 30-front die core, 31-front die insert, 4-rear die plate, 40-rear die core, 401-ejector block, 41-inner insert, 42-outer insert, 43-partial insert, 44-bottom insert, 5-rear die pad plate, 6-ejector plate, 61-first ejector plate, 610-first ejector pin, 62-second ejector plate, 620-second ejector pin, 63-third ejector plate, 630-third ejector pin, 7-rear die base plate, 8-limit connection mechanism, 81-first limit connection mechanism, 811-fixed block, 8110-chute, 8111-first inclined plane, 812-trip, 813-movable block, 8131-second inclined plane, 814-elastic piece, 82-second connection mechanism, 91-first spacing screw, 92-second spacing screw.

Detailed Description

The foregoing and other technical and scientific aspects, features and advantages of the present invention will be apparent from the following detailed description of a preferred embodiment, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are referred to only in the direction of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.

The high-rib-plate shell 100 shown in fig. 1 comprises a hollow bottom plate, an outer shell 101, rib plates 102 and an inner shell 103, wherein the outer shell 101, the rib plates 102 and the inner shell 103 extend out of one side of the hollow bottom plate and are distributed from outside to inside, and the inner shell 103 and the rib plates 102 are connected through reinforcing ribs 104 to ensure the use strength.

The injection mold for molding a high rib plate housing according to the embodiment shown in fig. 2 to fig. 4 includes a front mold base plate 1, a front mold backing plate 2, a front mold plate 3, a rear mold plate 4, a rear mold backing plate 5, an ejector plate 6 and a rear mold base plate 7, which are sequentially arranged, wherein a front mold core 30 and a rear mold core 40 for molding the high rib plate housing 100 are respectively arranged on the front mold plate 3 and the rear mold plate 4, and are used for forming a mold cavity and injection molding the high rib plate housing 100. The front die backing plate 2 and the rear die backing plate 5 are conventional designs which are convenient for die installation and provide buffering, and can be omitted in other dies.

On the back die core 40, an ejection block 401 is arranged corresponding to the bottom of the outer shell 101, an inner insert 41 is arranged corresponding to the deep cavity between the inner shell 103 and the rib plate 102, an outer insert 42 is arranged corresponding to the deep cavity between the outer shell 101 and the rib plate 102, and a back die insert 44 is arranged corresponding to the hollow bottom plate.

The ejector plate 6 comprises a first ejector plate 61, a second ejector plate 62 and a third ejector plate 63 which are sequentially arranged, the first ejector plate 61 is attached to the rear mold base plate 7, an ejector rod of the injection molding machine acts on the third ejector plate 63, and the first ejector plate 61, the second ejector plate 62 and the third ejector plate 63 are respectively provided with a first ejector pin 610, a second ejector pin 620 and a third ejector pin 630.

The first ejector pin 610 is connected to the insert 41, the second ejector pin 620 is located in a space in the insert 41 for molding the bead 104, and is attached to the bead 104 to act on the bead 104 during the mold release, and the third ejector pin 630 is connected to the ejector block 401. When no reinforcing rib 104 is arranged in the high-rib shell 100, the second ejector pin 620 penetrates through the inner insert 41 to be attached to the hollow bottom plate, so that the hollow bottom plate is demolded step by step.

And two sides of the ejector plate 6 are provided with limit connecting mechanisms for controlling the ejection strokes of the second ejector plate 62 and the third ejector plate 63 through a mechanical structure, and each limit connecting mechanism comprises a first limit connecting mechanism 81 for controlling the ejection stroke of the first ejector plate 61 and a second limit connecting mechanism 82 for controlling the ejection stroke of the second ejector plate 62.

In this embodiment, four corners in the deep cavity between the inner shell 103 and the rib plate 102 are set as concave portions, the inner insert 41 is provided with local inserts 43 corresponding to the concave portions, the local inserts 43 are used for molding the concave portions, and one end of the local inserts 43 corresponding to the ejector plate 6 is connected to the second ejector plate 62, so that the four corners of the hollow bottom plate and other parts are demolded step by step.

The front mold insert 31 is arranged on the front mold core 30 corresponding to the hollow part of the center of the high rib plate shell 100, the front mold insert 31 is used for molding the hollow bottom plate, the front mold insert 31 is arranged on the front mold bottom plate 1, the front mold bottom plate 1 is connected with the front template 3 in a sliding mode, and the front template 3 is connected with the rear template 4 through a mechanical shutter. The mechanical shutter is a standard part in the field of injection molds, and specific structures of the mechanical shutter are not described in detail.

In order to limit the sliding distance of the front template 3 relative to the front template base plate 1 during mold opening, a first distance screw 91 is arranged on the front template base plate 1, a stepped hole is arranged at the corresponding position of the front template 3, the first distance screw 91 penetrates through the front template backing plate 2, and the head part of the first distance screw is positioned in the stepped hole; when the head of the first pitch screw 91 abuts against the stepped hole, the mechanical shutter is forced to separate and the front template 3 does not move any more.

In this embodiment, the third ejector plate 63 includes an ejector pin panel and an ejector pin base plate in threaded connection, and the third ejector pin 630 is clamped between the ejector pin panel and the ejector pin base plate; the second ejector plate 62 and the third ejector plate 63 have the same structure; the first ejector 610 is screwed to the first ejector plate 61. In other embodiments, the connection mode of the ejector pins and the corresponding ejector pin plates can be selected at will.

In this embodiment, the injection mold for molding the high rib plate housing further includes a limiting mechanism for limiting the movement stroke of the ejector rod of the injection molding machine, as shown in fig. 4, the limiting mechanism includes a second distance screw 92 and a stepped hole provided on the ejector plate 6, in order to increase the use strength of the limiting mechanism, a stepped sleeve is sleeved on the outer surface of the second distance screw 92, a through hole corresponding to the large diameter of the stepped sleeve is provided on the third ejector plate 63, a through hole corresponding to the small diameter of the stepped sleeve is provided on the second ejector plate 62, the two holes jointly form the stepped hole, during the ejection process of the ejector rod of the injection molding machine, the ejector plate 6 moves along the stepped sleeve, and when the stepped surface of the stepped sleeve is attached to the stepped surface of the stepped hole, the movement of the ejector rod of the injection molding machine is prevented.

As shown in fig. 5 and 6, the first limiting connection mechanism 81 includes a fixed block 811, a hook 812 and a movable block 813, one end of the fixed block 811 is fixedly connected to the rear mold base plate 7, a sliding slot 8110 for accommodating the hook 812 is arranged along the ejection direction, one end of the hook 812 is fixedly connected to the third ejector plate 63, the movable block 813 is transversely movably mounted on the first ejector plate 61 through an elastic member 814, and in the ejection/retraction process of the ejection rod of the injection molding machine, the fixed block 811 acts on the movable block 813, thereby switching the engagement/disengagement of the hook 812 and the movable block 813.

Specifically, in the first limiting and connecting mechanism 81, a first inclined surface 8111 is arranged on one side of the fixed block 811 far away from the rear mold base plate 7 and opposite to the first ejector plate 61, a second inclined surface 8131 is arranged on the end surface of the movable block 813 facing the direction of the fixed block 811, and in the ejection/retraction process of the ejector rod of the injection molding machine, the second inclined surface 8131 abuts against the first inclined surface 8111 or is far away from the first inclined surface 8111 to enable the movable block 813 to move transversely, so that the clamping/disengagement of the clamping hook 812 and the movable block 813 is switched.

The second limiting connecting mechanism 82 has the same structure as the first limiting connecting mechanism 81, in the second limiting connecting mechanism 82, the movable block 813 is transversely movably mounted on the second ejector plate 62 through the elastic piece 814, one side of the fixed block 811 far away from the rear mold base plate 7 is just opposite to the direction of the second ejector plate 62 and is provided with a first inclined surface 8111, and a second inclined surface 8131 in the second limiting connecting mechanism 82 is abutted against the first inclined surface 8111 or is far away from the first inclined surface 8111 to enable the movable block 813 to transversely move, so that the switching hook 812 is clamped/separated with the movable block 813.

The demolding process is as follows:

after the injection of the mold is finished, the contact surface of the front mold plate 3 and the rear mold plate 4 is a parting surface, the rear mold part opens the mold under the action of an injection molding machine, in the mold opening process, the front mold plate 3 firstly moves together with the rear mold plate 4 under the action of a mechanical shutter and slides relative to the front mold base plate 1, so that the contact part of the high rib plate shell 100 and the front mold insert 31 is firstly demolded, then the mechanical shutter is separated, the front mold plate 3 does not move any more, the contact part of the high rib plate shell 100 and the front mold core 30 is demolded, and the whole front mold part finishes demolding;

the ejector rod of the injection molding machine moves to push the third ejector plate 63 to move, and because the second ejector plate 62 is clamped with the third ejector plate 63, and the first ejector plate 61 is clamped with the second ejector plate 62, the three move towards the front template 3 direction together, the front mold core 30 is static, so that the surface of the high rib plate shell 100, which is attached to the front mold core 30, is the surface demoulding attached to the outer insert 42, and the bottom surface of the high rib plate shell 100 is the surface demoulding attached to the rear mold insert;

the hooks 812 in the first limiting connection mechanism 81 are separated from the corresponding movable blocks 813, so that the first ejector plate 61 is separated from the second ejector plate 62, the ejector rods continuously move, the second ejector plate 62 is clamped with the third ejector plate 63 and jointly moves towards the direction of the front template 3, the inner insert 41 connected with the first ejector 610 is static, and the surface of the high-rib plate shell 100, which is attached to the inner insert 41, is demoulded;

the hooks 812 in the second limiting and connecting mechanism 82 are separated from the corresponding movable blocks 813, so that the second ejector plate 62 is separated from the third ejector plate 63, at this time, only the third ejector plate 63 moves towards the front template 3, the reinforcing ribs 102 connected with the second ejector 620 are demolded, meanwhile, the local inserts connected with the second ejector plate 62 are static, and the depressed parts at the four corners of the high-rib-plate shell 100 are demolded;

when the stepped sleeve on the second distance screw 92 is attached to the stepped surface of the stepped hole on the ejector plate 6, the ejector rod stops moving, and at the moment, the ejector block 401 is attached to the housing 101 for a circle, so that the high rib plate housing 100 can be smoothly taken down.

It is right above the utility model provides an injection mold for shaping high gusset casing has carried out detailed introduction, and this paper only uses specific individual example right the utility model discloses a structure and theory of operation have explained, and the description of above embodiment is only used for helping to understand the utility model discloses a method and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the scope of the appended claims.

Claims (10)

1. An injection mold for molding a high rib plate shell (100) comprises a front mold base plate (1), a front mold plate (3), a rear mold plate (4), an ejector plate (6) and a rear mold base plate (7) which are sequentially arranged, wherein the high rib plate shell (100) comprises a hollow base plate, and an outer shell (101), a rib plate (102) and an inner shell (103) which extend out of one side of the hollow base plate and are distributed from outside to inside, and a front mold core (30) and a rear mold core (40) for molding the high rib plate shell (100) are respectively arranged on the front mold plate (3) and the rear mold plate (4); it is characterized in that the preparation method is characterized in that,

on the rear mold core (40), an ejection block (401) is arranged corresponding to the bottom of the outer shell (101), an inner insert (41) is arranged corresponding to a deep cavity position between the inner shell (103) and the rib plate (102), an outer insert (42) is arranged corresponding to a deep cavity position between the outer shell (101) and the rib plate (102), and a rear mold insert (44) is arranged corresponding to the hollow bottom plate;

the ejector plate (6) comprises a first ejector plate (61), a second ejector plate (62) and a third ejector plate (63) which are sequentially arranged, the first ejector plate (61) is attached to the rear mold base plate (7), an ejector rod of the injection molding machine acts on the third ejector plate (63), and the first ejector plate (61), the second ejector plate (62) and the third ejector plate (63) are respectively provided with a first ejector pin (610), a second ejector pin (620) and a third ejector pin (630);

the first thimble (610) is connected with the inner insert (41), the second thimble (620) penetrates through the inner insert (41) to be attached to the hollow bottom plate, and the third thimble (630) is connected with the ejection block (401);

and the two sides of the ejector pin plate (6) are provided with limiting and connecting mechanisms for controlling the ejection strokes of the second ejector pin plate (62) and the third ejector pin plate (63) through mechanical structures.

2. The injection mold for molding a high rib plate shell according to claim 1, wherein a plurality of concave parts are arranged in a deep cavity between the inner shell (103) and the rib plate (102), a local insert (43) is arranged on the inner insert (41) corresponding to the concave parts, the local insert (43) is used for molding the concave parts, and one end of the local insert (43) corresponding to the ejector plate (6) is connected to the second ejector plate (62).

3. The injection mold for molding the high rib plate shell according to claim 1, wherein when the inner shell (103) is connected with the rib plate (102) through the reinforcing rib (104), the second ejector pins (620) are attached to the reinforcing rib (104).

4. The injection mold for molding a high rib plate shell according to claim 1, wherein a front mold insert (31) for molding the hollow bottom plate is arranged on the front mold core (30), the front mold insert (31) is installed on the front mold bottom plate (1), the front mold bottom plate (1) is connected with the front mold plate (3) in a sliding manner, and the front mold plate (3) is connected with the rear mold plate (4) through a mechanical shutter.

5. The injection mold for molding the high rib plate shell according to claim 4, wherein first distance screws (91) are arranged on the front mold bottom plate (1), stepped holes are formed in corresponding positions of the front mold plate (3), and the front mold plate (3) slides at fixed intervals along the first distance screws (91) in the mold opening and closing process.

6. The injection mold for molding a high rib plate housing according to claim 1, wherein the third ejector plate (63) comprises an ejector pin plate and an ejector pin base plate which are in threaded connection, the third ejector pins (630) are clamped between the ejector pin plate and the ejector pin base plate, and the second ejector pin plate (62) and the third ejector pin plate (63) have the same structure.

7. The injection mold for molding the high rib plate shell according to claim 1, further comprising a limiting mechanism for limiting the movement stroke of the ejector rod of the injection molding machine, wherein the limiting mechanism comprises a second distance screw (92) and a stepped hole formed in the ejector plate (6), and in the ejection process of the ejector rod of the injection molding machine, the step surface of the second distance screw (92) is attached to the step surface of the stepped hole to prevent the ejector rod of the injection molding machine from moving.

8. The injection mold for molding the high rib plate shell according to claim 7, wherein a stepped sleeve is sleeved on the outer surface of the second distance screw (92), and in the ejection process of the ejector rod of the injection molding machine, the stepped surface of the stepped sleeve is attached to the stepped surface of the stepped hole to prevent the ejector rod of the injection molding machine from moving.

9. The injection mold for molding the high rib plate shell according to claim 1, wherein the limit connecting mechanisms comprise a first limit connecting mechanism (81) for controlling the ejection stroke of the first ejector plate (61) and a second limit connecting mechanism (82) for controlling the ejection stroke of the second ejector plate (62);

the first limiting connecting mechanism (81) comprises a fixed block (811), a clamping hook (812) and a movable block (813), one end of the fixed block (811) is fixedly connected to the rear die base plate (7), a sliding groove (8110) used for accommodating the clamping hook (812) is formed in the ejection direction, one end of the clamping hook (812) is fixedly connected to the third ejector plate (63), the movable block (813) is transversely and movably mounted on the first ejector plate (61) through an elastic piece (814), and in the ejection/retraction process of an ejection rod of the injection molding machine, the fixed block (811) acts on the movable block (813), so that the clamping hook (812) and the movable block (813) are switched to be clamped/separated;

the second limit connecting mechanism (82) has the same structure as the first limit connecting mechanism (81), and in the second limit connecting mechanism (82), the movable block (813) is movably mounted on the second ejector plate (62) along the transverse direction through an elastic piece (814).

10. The injection mold for molding the high rib plate shell according to claim 9, wherein in the first limiting and connecting mechanism (81), a first inclined surface (8111) is arranged on one side, away from the rear mold base plate (7), of the fixed block (811) in a direction opposite to the first ejector plate (61), a second inclined surface (8131) is arranged on an end surface, facing the fixed block (811), of the movable block (813), and in an ejection/retraction process of an ejection rod of the injection molding machine, the second inclined surface (8131) abuts against the first inclined surface (8111) or is away from the first inclined surface so that the movable block (813) moves transversely, and therefore the engagement/disengagement between the hook (812) and the movable block (813) is switched;

the second limiting connection mechanism (82) is the same as the first limiting connection mechanism (81), and in the second limiting connection mechanism (82), a first inclined plane (8111) is arranged at one side, away from the rear die base plate (7), of the fixed block (811) and is just opposite to the second ejector plate (62).

Images