CN217803114U - Injection mould - Google Patents

Abstract

The utility model provides an injection mold, injection mold includes: a rear mold housing; the rear mould assembly comprises a rear mould core and a side mould core which jointly form an injection part for manufacturing a product, and the side mould core comprises a plurality of side moulds movably arranged on a rear mould shell; the ejection assembly comprises a push plate and a push plate ejector rod which can be arranged below the side mold cores along the vertical movement, the rear mold cores penetrate through the push plate, when the mold is opened, the side molds are suitable for moving towards the direction far away from the product to avoid the push plate, and the push plate ejector rod is suitable for pushing the push plate to contact the product. Through the technical scheme provided by the application, the problems that the structure of the rear template in the related technology is complex, and the manufacturing and maintenance cost of the mold is increased can be solved.

Description

Injection mould

Technical Field

The utility model relates to the technical field of molds, particularly, relate to an injection mold.

Background

The injection mold is a tool for producing plastic products by adopting an injection molding method, and the plastic melted by heating is injected into a mold cavity by an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification. The method adopting injection molding is suitable for mass production of parts with complicated shapes.

In the related art, a product (e.g., a headphone) needs to be manufactured by injection molding due to its complicated structure. In order to stably support a product in the mold opening and ejecting processes, a conventional rear mold springboard is often selected for mold design in the mold design process.

However, in a conventional mold using a rear mold springboard, when the mold is opened, the rear mold springboard needs to be entirely tripped to realize the action of peeling off the product, and when the rear mold springboard is entirely tripped, a lot of mold parts which do not actually participate in ejection are loaded, so that the manufacturing and maintenance costs of the mold are increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides an injection mold to the back template structure of solving among the correlation technique is complicated, makes the mould make with the problem of maintenance cost increase.

The utility model provides an injection mold, injection mold includes: a rear mold housing; the rear mould assembly comprises a rear mould core and a side mould core which jointly form an injection part for manufacturing a product, and the side mould core comprises a plurality of side moulds movably arranged on a rear mould shell; the ejection assembly comprises a push plate and a push plate ejector rod which can be arranged below the side mold cores along the vertical movement, the rear mold cores penetrate through the push plate, when the mold is opened, the side molds are suitable for moving towards the direction far away from the product to avoid the push plate, and the push plate ejector rod is suitable for pushing the push plate to contact the product.

Furthermore, the ejection assembly further comprises a connector push rod and an ejection plate, the upper end face of the rear mold shell is provided with a connector injection molding groove, the connector injection molding groove is communicated with the injection molding part, the upper end of the connector push rod extends into the connector injection molding groove, the ejection plate is respectively in drive connection with the lower end of the push plate ejector rod and the lower end of the connector push rod, the ejection plate can be vertically movably arranged on the rear mold shell, and the ejection plate is provided with an initial position and a rising position for driving the push plate ejector rod and the connector push rod to move upwards.

Furthermore, the lower end of the push plate ejector rod is abutted to the ejector plate, a convex shoulder is arranged on the outer side wall of the connecting body push rod, the ejector plate is provided with an ejector surface in driving fit with the convex shoulder, the ejector surface is located below the convex shoulder and has a gap with the convex shoulder, the ejector surface is provided with a delay position separated from the convex shoulder and an ejector position abutted to the convex shoulder, the ejector surface is located at the delay position under the condition that the ejector plate is located at the initial position, and the ejector surface is located at the ejector position under the condition that the ejector plate is located at the rising position.

Furtherly is provided with the mounting hole on the liftout plate, and the mounting hole is including wearing out section, reaming section and the shrinkage cavity section that from top to bottom communicates in proper order, and the mounting hole is worn to locate by the connector push rod, and the section of wearing out is worn out to the upper end of connector push rod, and the shrinkage cavity section is worn out to the lower extreme of connector push rod, and the movably setting of convex shoulder is in the reaming section, and the diapire of reaming section forms the liftout face.

Furthermore, the ejection assembly further comprises a compression spring and a pressing piece, the pressing piece is arranged on the upper surface of the ejection plate and connected with the ejection plate, the lower end of the reaming section extends to the ejection plate, the upper end of the reaming section extends to the pressing piece, the compression spring is arranged in the reaming section and sleeved with the connector push rod, the lower end of the compression spring is abutted to the upper surface of the shoulder, and the upper end of the compression spring is abutted to the top wall of the reaming section.

Further, the liftout plate is including the last liftout plate and the lower liftout plate that are connected, and the lower extreme of push pedal passes the last liftout plate and with the upper surface looks butt of lower liftout plate, and the shrinkage cavity section sets up in lower liftout plate, and the reaming section is including the first reaming section and the second reaming section that are linked together, and first reaming section sets up in last liftout plate, and the second reaming section sets up in lower liftout plate.

Furthermore, the push plate is provided with an avoiding hole, an avoiding groove and a matching groove, the avoiding hole vertically penetrates through the push plate, the rear mold core penetrates through the avoiding hole, the avoiding groove penetrates through the top wall of the push plate, two ends of the avoiding groove are respectively communicated with the connecting body injection molding groove and the avoiding hole, and the matching groove is positioned at the upper end of the push plate and is surrounded on the periphery of the avoiding hole; and/or, ejection assembly includes two push pedal ejector pins, and two push pedal ejector pins set up respectively in the both sides of back mould core and all are connected with the push pedal, and back mould casing is all worn to locate along vertical movably to two push pedals, and the lower extreme of two push pedal ejector pins all with ejector plate looks butt.

Furthermore, the injection mold also comprises a cooling water pipe and a return pipe, the rear mold core is provided with a central hole and a return hole communicated with the central hole, a water outlet of the cooling water pipe is communicated with the lower end of the central hole, a water inlet of the cooling water pipe is communicated with a water source, and the return pipe is communicated with the return hole.

Further, the back mould casing is including back mould mounting and the back mould plate piece that is connected, back mould plate piece is located the top of back mould mounting, back model subassembly sets up in back mould plate piece, the space has between back mould plate piece and the back mould mounting, the liftout plate sets up in the space, push pedal ejector pin and connector push rod all wear to locate back mould plate piece along vertical movably, the lower extreme and the back mould mounting looks butt of connector push rod, the lower extreme and the liftout plate looks butt of push pedal ejector pin, the push pedal can set up in back mould plate piece with vertical removal, the equal back-and-forth movement ground of front side mould and back side mould sets up in back mould plate piece, the side mould can remove the ground and set up in back mould plate piece with removing.

Furthermore, the rear die fixing part comprises a rear die fixing plate and two rear die foot plates which are connected, the rear die fixing plate extends along the horizontal direction, the rear die foot plates extend along the vertical direction, the two rear die foot plates are located between the rear die fixing plate and the rear die plate part, and the rear die fixing plate, the two rear die foot plates and the rear die plate part jointly form a gap; the side die core comprises a front side die, a rear side die and side dies which are arranged at intervals, the front side die and the rear side die can be arranged on the rear die plate part in a front-and-back moving mode, and the side dies can be arranged on the rear die plate part in a left-and-right moving mode; the rear template part comprises a rear template and a rear inner mold arranged in the rear template, the front side mold and the rear side mold can be arranged on the rear template and the rear inner mold in a front-and-back movement manner, the side mold can penetrate through the rear template and the rear inner mold in a left-and-right movement manner, the connecting body injection molding groove is arranged at the upper end of the rear inner mold, the rear mold core penetrates through the rear inner mold in a vertically extending manner, and the upper end of the rear mold core penetrates out of the rear inner mold; the injection mold also comprises a front mold shell positioned above the rear inner mold, the lower end of the front mold shell is provided with a front mold core arranged corresponding to the rear mold component, and the front mold core and the injection part together enclose a product injection part; injection mold includes two back model subassemblies, two push pedals and three connector push rods and two front mould casings, two back model subassembly intervals set up in back model piece, two push pedals correspond two back mould core settings respectively, the connector groove of moulding plastics is including the first groove section and the second groove section that are linked together, the upper end of first connector push rod and second connector push rod all stretches into first groove section, the second groove section is stretched into to the upper end of third connector push rod, two front mould cores correspond two back model subassembly settings respectively.

Use the technical scheme of the utility model, injection mold includes back mould casing, back model subassembly and ejecting subassembly, is using this injection mold to make the product to when peeling off the product, make a plurality of side forms remove and then the die sinking in the back mould casing, for the push pedal leaves and dodges the space, drive push pedal rebound through ejecting system after that, make push pedal and product looks butt. The push plate continues to move upwards and drives the product to move upwards, so that the product is stripped from the injection molding part. Compared with the prior art, the size of the push plate is greatly reduced compared with that of a conventional rear die springboard, in the die opening process, the product is demoulded only through the push plate, and no redundant parts participate in linkage, so that the manufacturing and maintenance cost of the die is reduced.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a cross-sectional view of an injection mold provided by an embodiment of the present invention;

FIG. 2 shows a partial enlarged view at A in FIG. 1;

fig. 3 shows a further sectional view of the injection mold provided by the embodiment of the present invention;

FIG. 4 shows a partial enlarged view at B in FIG. 3;

FIG. 5 shows a partial enlarged view at C in FIG. 3;

FIG. 6 is an assembly view of a push plate, a connector push rod, and a rear mold core of an injection mold according to an embodiment of the present invention;

FIG. 7 shows a schematic view of the construction of the pusher plate of FIG. 6;

FIG. 8 shows a schematic structural view of the rear mold core of FIG. 6;

fig. 9 shows a schematic structural diagram of an injection mold provided by an embodiment of the present invention;

fig. 10 is a side view illustrating an injection mold according to an embodiment of the present invention in an injection molding state;

fig. 11 is a front view of an injection mold according to an embodiment of the present invention in an injection state;

fig. 12 is a side view of an injection mold according to an embodiment of the present invention in a front mold core open state;

fig. 13 is a front view of the injection mold according to the embodiment of the present invention in a front mold core opening state;

fig. 14 is a side view of an injection mold according to an embodiment of the present invention in a rear mold core open state;

fig. 15 is a front view of the injection mold according to the embodiment of the present invention in a rear mold core open state;

fig. 16 is a side view of an ejector plate of an injection mold according to an embodiment of the present invention in a raised position;

fig. 17 is a front view of an ejector plate of an injection mold according to an embodiment of the present invention in a raised position;

fig. 18 is a side view of an ejection assembly of an injection mold in a final ejection state according to an embodiment of the present invention;

fig. 19 is a front view of an ejection assembly of an injection mold according to an embodiment of the present invention in a final ejection state.

Wherein the figures include the following reference numerals:

10. a rear mold housing; 11. a connector injection molding groove; 111. a first groove section; 112. a second groove section; 12. a rear mold fixing member; 121. a rear mold fixing plate; 122. a rear template; 13. a rear template member; 131. a rear template; 132. a rear inner mold; 14. a void;

20. a rear mold assembly; 21. a rear mold core; 22. a side mold core; 221. a front side mold; 222. a rear side mold; 223. a side die;

30. ejecting the assembly; 31. pushing the plate; 311. avoiding holes; 312. an avoidance groove; 313. a matching groove; 32. a connector push rod; 321. shouldering; 322. spacing; 33. a push plate ejector rod; 34. ejecting the plate; 341. ejecting the surface; 342. mounting holes; 343. a piercing section; 344. a reaming section; 3441. a first reaming section; 3442. a second reaming section; 345. a hole reducing section; 346. lifting the top plate; 347. a lower ejector plate; 35. a compression spring; 36. a compression member;

40. a front mold housing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 19, the embodiment of the utility model provides an injection mold, injection mold includes back mould casing 10, back mould subassembly 20 and ejecting subassembly 30, back mould casing 10 is provided with the groove of moulding plastics, back mould subassembly 20 is including forming the back mould core 21 and the side form core 22 of the portion of moulding plastics of manufacturing the product jointly, side form core 22 includes that a plurality of removals set up in the side form of back mould casing 10, ejecting subassembly 30, including can set up push pedal 31 and push pedal ejector pin 33 in side form core 22 below along vertical movement, push pedal 31 is worn to locate by back mould core 21, during the die sinking, a plurality of side forms are suitable for to the direction removal of keeping away from the product in order to dodge push pedal 31, push pedal ejector pin 33 is suitable for promoting push pedal 31 with the contact product.

Use the technical scheme of the utility model, injection mold includes back mould shell 10, back model subassembly 20 and ejecting subassembly 30, makes a plurality of side forms remove and then the die sinking in back mould shell 10 using this injection mold manufacturing product to when peeling off the product, for push pedal 31 leaves the space of dodging, drive push pedal 31 rebound through push pedal ejector pin 33 through ejection system after that, make push pedal 31 and product looks butt. The push plate 31 moves upward and carries the product upward, thereby peeling the product from the injection molding section. Compared with the prior art, the size of the push plate 31 is greatly reduced compared with that of a conventional rear die springboard, in the die opening process, the product can be demoulded only through the push plate 31, and no redundant parts participate in linkage, so that the manufacturing and maintenance cost of the die is reduced.

Wherein, injection mold still includes the front mould casing 40 that is located the top of back centre form 132, and the lower extreme of front mould casing 40 has the front mould core that corresponds back model component 20 and set up, and the front mould core encloses into the product portion of moulding plastics with the portion of moulding plastics jointly, and the inner structure of the portion of moulding plastics of product is unanimous with the appearance of product, can mould plastics into the product through the portion of moulding plastics of product.

In the present embodiment, the outer dimensions of the push plate 31 are 30 × 23 × 12.5 units: mm, whereas the conventional rear module springboard dimensions are 500 x 400 units: mm, the size of the push plate 31 is only 3.6 percent of that of the rear die springboard.

In addition, in the prior art, since the ejection system is required to drive the rear mold springboard and the loaded components on the rear mold springboard to move during the process of pulling the product out of the rear mold core 21, a guide structure is required to be provided, that is, a guide post is provided on the rear mold shell 10 and extends to the front mold shell 40, so as to ensure that the product is not affected during the process of pulling the rear mold core 21 out. In the embodiment, the push plate 31 is used, so that the step is omitted, the arrangement of the guide post can be avoided, and the manufacturing and maintenance cost of the die is reduced.

The side mold core 22 includes a front side mold 221, a rear side mold 222 and side molds 223 which are arranged at intervals, the front side mold 221 and the rear side mold 222 are arranged on the rear mold housing 10 in a manner of being capable of moving back and forth, and the side molds 223 are arranged on the rear mold housing 10 in a manner of being capable of moving left and right, wherein the side mold core 22 adopting the above structure can form the rear mold assembly 20 by using the front side mold 221, the rear side mold 222, the side molds 223 and the rear mold core 21, thereby forming the injection molding part. In addition, the front side die 221, the rear side die 222 and the side die 223 move to open the side die core 22, and the opening process of the side die core 22 is prior to the opening process of the rear die core 21, so that the side die core 22 does not interfere with the product in the upward peeling process of the product, and further the peeling of the product is not affected.

As shown in fig. 1, 5 and 6, the ejection assembly 30 further includes a connector push rod 32 and an ejection plate 34, the upper end surface of the rear mold shell 10 has a connector injection molding groove 11, the connector injection molding groove 11 is communicated with the injection molding part, the upper end of the connector push rod 32 extends into the connector injection molding groove 11, the ejection plate 34 is respectively connected with the lower end of the push plate push rod 33 and the lower end of the connector push rod 32 in a driving manner, the ejection plate 34 is vertically movably disposed on the rear mold shell 10, and the ejection plate 34 has an initial position and a lifting position for driving the push plate push rod 33 and the connector push rod 32 to move upward. The ejector plate 34 can drive the push plate ejector rod 33 and the connector ejector rod 32 to move, and the push plate 31 is driven by the push plate ejector rod 33 to move, so that the rear shell product is separated from the rear shell product injection molding part by the push plate 31 and the connector ejector rod 32.

In the prior art, the front mold 221 and the rear mold 222 are movably installed in the rear mold case 10 in a front-and-rear direction, the side mold 223 is movably installed in the rear mold case 10 in a left-and-right direction, and the rear mold core 21 is vertically movably installed in the rear mold diving board. After the product is injection molded, the front mold core of the front mold housing 40 is first driven by an injection molding machine to open the mold, so that the front mold core and the rear mold assembly 20 are separated. Then, the rear mold springboard and the rear inner mold 132 loaded on the rear mold springboard, the rear mold assembly 20, the connector push rod 32 and the auxiliary components of the rear mold springboard are driven by the ejection system to open the mold, so that the product is peeled from the rear mold core 21. And then, integrally opening the rear mold to separate the front mold shell 40 from the rear mold shell 10, simultaneously driving a plurality of side mold opening molds through an ejection system of the injection molding machine to completely strip the product from the injection molding part, finally driving the connecting body push rod 32 through the ejection system, and driving the product to a final ejection state through the connecting body push rod 32.

Specifically, in the prior art, a connecting rod is connected to the lower end of the rear mold core 21, and in the process that the ejection system drives the rear mold springboard to open the mold, the connecting rod pulls the rear mold core 21 to peel off the product from the rear mold core 21.

Compared with the prior art, in the embodiment, the push plate 31 is arranged, the product is peeled off through the matching of the push plate 31 and the connecting body push rod 32, and then a large-size rear die springboard is not needed, so that the auxiliary parts of the rear inner die 132, the rear die assembly 20, the connecting body push rod 32 and the rear die springboard, which are used for driving the rear die springboard and are loaded on the rear die springboard through an ejection system, are omitted, and the product is peeled off from the rear die core 21. Therefore, the mold opening process of the embodiment is simpler and more convenient, and the manufacturing and maintenance cost of the mold is not increased.

In the prior art, since the rear mold core 21 is removed, the product has no central support, and in the process of opening the front mold 221, the rear mold 222 and the side mold 223, the product is supported only by the stub bar connector formed in the connector injection groove 11, which may cause scraping of the product. In the embodiment, in the mold opening process, the processes of opening the side mold core 22 and opening the rear mold core 21 are independent from each other, and the mold opening process of the rear mold core 21 is set after the side mold core 22 is opened, so that the product can be always positioned on the rear mold core 21 until finally being peeled off from the rear mold core 21 by the push plate 31, and therefore, the product can be prevented from being scratched, and the quality of the product is better.

It should be noted that, in the injection molding process, the stub bar connector is formed in the connector injection molding groove 11, and is connected to the connector push rod 32 after being cooled, and then the connector push rod 32 is driven by the ejection system, so as to drive the stub bar connector to move upward.

In this embodiment, the ejector plate 34 is powered by the ejector system of the injection molding machine.

When the ejector plate 34 is in the initial position, the ejector plate 31 is located below the injection part, and when the ejector plate 34 is in the raised position, the ejector plate 34 drives the ejector plate 31 and the connecting-body pusher 32, thereby driving the product to rise and be peeled from the rear mold core 21.

As shown in fig. 1 and 5, the lower end of the ejector plate 33 abuts against the ejector plate 34, the outer side wall of the connecting body push rod 32 is provided with a shoulder 321, the ejector plate 34 has an ejector surface 341 in driving fit with the shoulder 321, the ejector surface 341 is located below the shoulder 321 and has a gap 322 with the shoulder 321, the ejector surface 341 has a delay position separated from the shoulder 321 and an ejector position abutting against the shoulder 321, the ejector surface 341 is located at the delay position when the ejector plate 34 is located at the initial position, and the ejector surface 341 is located at the ejector position when the ejector plate 34 is located at the raised position. By adopting the ejection assembly 30 with the structure, the ejection plate 34 can drive the push plate 31 to move firstly in the stripping process of the product, so that the push plate 31 and the product are driven to move together after contacting, and then the product is stripped from the rear mold core 21, thereby avoiding the simultaneous movement of the push plate 31 and the connector push rod 32 and causing the damage of the product and the stub bar connector.

Specifically, when the ejector plate 34 is located at the initial position, the ejector plate 31 is sleeved on the outer periphery of the rear mold core 21 and located below the product, and the ejector surface 341 is located below the shoulder 321 and spaced from the shoulder by 322, and at this time, the ejector surface 341 is located at the delayed position. When the product needs to be demolded, the ejector plate 34 drives the ejector plate 31 to move through the ejector plate rod 33, so that the ejector plate 31 ascends along the rear mold core 21, and at this time, the ejection surface 341 ascends along with the ejector plate 34 and is still located between the shoulders 321 with a space. Then, the ejector plate 34 continues to rise until the upper surface of the ejector plate 31 is attached to the product, at this time, the ejector plate 34 is located at the rising position, the ejector surface 341 is attached to the shoulder 321 and located at the ejecting position, the ejector plate 34 can drive the connector push rod 32 to move through the shoulder 321, and the ejector plate 31 and the connector push rod 32 push the product to be peeled from the rear mold core 21 together.

As shown in fig. 1 and fig. 5, a mounting hole 342 is formed in the ejector plate 34, the mounting hole 342 includes a piercing section 343, a reaming section 344, and a shrinking section 345 that are sequentially communicated from top to bottom, the connecting body push rod 32 is pierced through the mounting hole 342, the upper end of the connecting body push rod 32 is pierced through the piercing section 343, the lower end of the connecting body push rod 32 is pierced through the shrinking section 345, the shoulder 321 is movably disposed in the reaming section 344, and the bottom wall of the reaming section 344 forms an ejector face 341. The ejection surface 341 with the structure has the advantages of simple structure and convenience in processing.

In this embodiment, the lower surface of the shoulder 321 and the ejecting surface 341 are both flat surfaces, and they are matched with each other, so that the ejecting plate 34 can drive the connecting body pushing rod 32 to move.

As shown in fig. 1, 5 and 6, the ejection assembly 30 further includes a compression spring 35 and a pressing member 36, the pressing member 36 is disposed on the upper surface of the ejection plate 34 and connected to the ejection plate 34, the lower end of the reaming section 344 extends to the ejection plate 34, the upper end of the reaming section 344 extends to the pressing member 36, the compression spring 35 is disposed in the reaming section 344 and sleeved on the connecting body push rod 32, the lower end of the compression spring 35 abuts against the upper surface of the shoulder 321, and the upper end of the compression spring 35 abuts against the top wall of the reaming section 344. The compression spring 35 can block the connecting body push rod 32, so that the connecting body push rod 32 is prevented from being driven to move upwards due to the action of friction force between the mounting hole 342 or the rear die shell 10 and the connecting body push rod 32, and damage to a product and a stub bar connecting body is avoided.

In this embodiment, by providing the pressing member 36, the piercing section 343 and the partial reaming section can be provided on the pressing member 36, which has an advantage of being easy to process. The hold down 36 is a hold down plate.

As shown in fig. 1 and 5, the ejector plate 34 includes an upper ejector plate 346 and a lower ejector plate 347 connected to each other, the lower end of the ejector plate 31 passes through the upper ejector plate 346 and abuts against the upper surface of the lower ejector plate 347, the reduced-bore section 345 is provided on the lower ejector plate 347, the enlarged-bore section 344 includes a first enlarged-bore section 3441 and a second enlarged-bore section 3442 communicated with each other, the first enlarged-bore section 3441 is provided on the upper ejector plate 346, and the second enlarged-bore section 3442 is provided on the lower ejector plate 347. The ejector plate 34 manufactured by the upper ejector plate 346 and the lower ejector plate 347 is convenient for processing the expanded hole section 344 and assembling the ejector plate ejector rod 33 and the connecting body push rod 32, and has the advantages of convenient structure and assembly.

As shown in fig. 6 and 7, the push plate 31 is provided with an avoiding hole 311, an avoiding groove 312 and a matching groove 313, the avoiding hole 311 vertically penetrates through the push plate 31, the rear mold core 21 penetrates through the avoiding hole 311, the avoiding groove 312 penetrates through the top wall of the push plate 31, two ends of the avoiding groove 312 are respectively communicated with the injection molding groove 11 of the connector and the avoiding hole 311, the matching groove 313 is located at the upper end of the push plate 31 and surrounds the periphery of the avoiding hole 311, the avoiding hole 311 is adopted, an avoiding effect can be formed, the rear mold core 21 penetrates through the push plate 31, and the push plate 31 can be located below a product. By adopting the avoiding groove 312, an avoiding function can be formed, the product can be connected with the stub bar connecting body, and the stub bar connecting body can be stripped from the push plate 31. By adopting the matching groove 313, as the shape of the matching groove 313 is matched with the shape of the lower end of the product, the contact area between the matching groove 313 and the product can be increased, and the product cannot be inclined in the moving process.

In this embodiment, the ejection assembly 30 includes two ejector plate rods 33, the two ejector plate rods 33 are respectively disposed on two sides of the rear mold core 21 and are connected to the ejector plate 31, the two ejector plates 31 are vertically movably disposed through the rear mold shell 10, and lower ends of the two ejector plate rods 33 are abutted to the ejector plate 34. By adopting the structure, in the action process of the push plate 31, the two push plate ejector rods 33 can ensure that the stress on the two sides of the push plate 31 is more uniform, and further the push plate 31 cannot be inclined in the action process.

The injection mold further comprises a cooling water pipe and a return pipe, the rear mold core 21 is provided with a central hole and a return hole communicated with the central hole, a water outlet of the cooling water pipe is communicated with the lower end of the central hole, a water inlet of the cooling water pipe is communicated with a water source, and the return pipe is communicated with the return hole. By adopting the cooling water pipe and the return pipe, the cooling water can be utilized to form a cooling effect on the rear mold core 21, which is beneficial to the molding of products and shortens the molding time of the products.

In the prior art, the lower end of the rear mold core 21 is connected with a connecting rod, which is not beneficial to the arrangement of a cooling water pipe. Therefore, the injection mold in the prior art cannot be provided with a cooling system, or the structure of the cooling system is more complicated. The injection mold of the embodiment does not need a connecting rod to drive the rear mold core 21 to move, thereby being beneficial to the arrangement of the cooling water pipe.

As shown in fig. 1 and 9, the rear mold housing 10 includes a rear mold fixing member 12 and a rear mold plate 13 connected to each other, the rear mold plate 13 is located above the rear mold fixing member 12, the rear mold assembly 20 is disposed in the rear mold plate 13, a gap 14 is provided between the rear mold plate 13 and the rear mold fixing member 12, the ejector plate 34 is disposed in the gap 14, the ejector plate 33 and the connector push rod 32 are vertically movably inserted into the rear mold plate 13, the lower end of the connector push rod 32 abuts against the rear mold fixing member 12, the lower end of the ejector plate 33 abuts against the ejector plate 34, the ejector plate 31 is vertically movably disposed on the rear mold plate 13, the front mold 221 and the rear mold 222 are both vertically movably disposed on the rear mold plate 13, and the side mold 223 is laterally movably disposed on the rear mold plate 13. With the rear mold shell 10 of the above-described structure, it is possible to provide the ejector plate 34 with the clearance 14 between the rear mold fixing member 12 and the rear mold plate member 13, and to provide a space for the action of the ejector plate 34 with the clearance 14.

As shown in fig. 1, 3 and 9, the rear mold fixing member 12 includes a rear mold fixing plate 121 and two rear mold base plates 122 connected to each other, the rear mold fixing plate 121 extends in a horizontal direction, the rear mold base plates 122 extend in a vertical direction, the two rear mold base plates 122 are both located between the rear mold fixing plate 121 and the rear mold plate 13, the rear mold fixing plate 121, the two rear mold base plates 122 and the rear mold plate 13 together enclose a gap 14, and with the rear mold base plates 122, the rear mold plate 13 can be supported, and the gap 14 can be formed by the gap between the two rear mold base plates 122.

In the present embodiment, as shown in fig. 10 to 19, the rear mold fixing plate 121 is connected to an injection molding machine. After the product is injection molded, the front mold core of the front mold housing 40 is first driven by an injection molding machine to open the mold, so that the front mold core and the rear mold assembly 20 are separated. Then, the injection molding machine drives the rear mold fixing member 12 to move, and the rear mold fixing member 12 drives the rear mold plate member 13 to move downward, so that the front mold shell 40 and the rear mold shell 10 are separated, and simultaneously, the ejection system of the injection molding machine drives the side mold core 22 to open the mold, so as to make room for the upward movement of the rear mold core 21. Then, the ejector plate 34 acts to drive the push plate 31 to move upward, so that the push plate 31 is abutted against the product. Then, the ejector plate 34 drives the push plate 31 and the connecting body push rod 32 to act simultaneously, so as to strip the product out of the injection part, and the product is in a final ejection state.

Specifically, the rear template member 13 includes a rear template 131 and a rear inner mold 132 disposed in the rear template 131, the front side mold 221 and the rear side mold 222 are disposed in the rear template 131 and the rear inner mold 132 in a front-and-rear movement manner, the side mold 223 is disposed in the rear template 131 and the rear inner mold 132 in a left-and-right movement manner, the connecting body injection molding groove 11 is disposed at the upper end of the rear inner mold 132, the rear mold core 21 is disposed in the rear inner mold 132 in a vertical extension manner, and the upper end of the rear mold core 21 penetrates out of the rear inner mold 132. The use of the rear mold plate 131 and the rear inner mold 132 has the advantage of facilitating assembly of the rear mold assembly 20.

In the prior art, because the in-process that the back mould springboard jumped off, pull back mould core 21 through the connecting rod and break away from the product, so back mould casing 10 is provided with back mould carrier plate, and back mould carrier plate is located between back mould sole and the back mould springboard, and the lower extreme of connecting rod stretches into in the back mould carrier plate and is connected with back mould carrier plate, and back mould carrier plate drives back mould core 21 through the connecting rod and breaks away from when being used for bearing back mould springboard. In the embodiment, the rear mold plate 131 is equivalent to a rear mold springboard in the prior art, but since the rear mold core 21 is driven to be separated from the product while the rear mold plate 131 does not need to be tripped, a rear mold carrier plate does not need to be arranged, and therefore, the manufacturing and maintenance costs of the mold are reduced.

Wherein, injection mold includes two back model component 20, two push plates 31 and three connector push rod 32 and two preceding mould casings 40, two back model component 20 intervals set up in back mould plate 13, two push plates 31 correspond two back mould cores 21 settings respectively, the connector groove 11 of moulding plastics is including first groove section 111 and the second groove section 112 that are linked together, first connector push rod 32 and the upper end of second connector push rod 32 all stretch into first groove section 111, the upper end of third connector push rod 32 stretches into second groove section 112, two preceding model cores correspond two back model component 20 settings respectively. Adopt the injection mold of above-mentioned structure, can mould plastics two products simultaneously, have efficient advantage.

In this embodiment, a rotation stopping structure is disposed between the push plate push rod 33 and the upper push plate 346, the rotation stopping structure includes a rotation stopping boss and a rotation stopping groove, the rotation stopping boss is disposed at a lower end of the push plate push rod 33, and the rotation stopping groove is disposed in the upper push plate 346. The rotation of the push plate top rod 33 can be prevented by the rotation stopping structure, thereby facilitating the assembly of the push plate top rod 33 and the push plate 31.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the directional terms such as "front, back, upper, lower, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, and in the case of not making a contrary explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An injection mold, comprising:

a rear mold housing (10);

the rear mould assembly (20) comprises a rear mould core (21) and a side mould core (22) which jointly form an injection part for manufacturing a product, and the side mould core (22) comprises a plurality of side moulds movably arranged on the rear mould shell (10);

ejecting subassembly (30), including can be along vertical migration ground setting push pedal (31) and push pedal ejector pin (33) of side die core (22) below, back die core (21) wear to locate push pedal (31), during the die sinking, a plurality of the side die is suitable for to keeping away from the direction of product removes in order to dodge push pedal (31), push pedal ejector pin (33) are suitable for the promotion push pedal (31) are in order to contact the product.

2. The injection mold according to claim 1, wherein the ejection assembly (30) further comprises a connecting body push rod (32) and an ejection plate (34), the upper end face of the rear mold shell (10) has a connecting body injection groove (11), the connecting body injection groove (11) is communicated with the injection part, the upper end of the connecting body push rod (32) extends into the connecting body injection groove (11), the ejection plate (34) is respectively in driving connection with the lower end of the push plate push rod (33) and the lower end of the connecting body push rod (32), the ejection plate (34) is vertically movably disposed on the rear mold shell (10), and the ejection plate (34) has an initial position and a rising position for driving the push plate push rod (33) and the connecting body push rod (32) to move upward.

3. An injection mould according to claim 2, characterized in that the lower end of the ejector plate ram (33) abuts against the ejector plate (34), a shoulder (321) is provided on the outer side wall of the connecting body ram (32), the ejector plate (34) has an ejector surface (341) in driving engagement with the shoulder (321), the ejector surface (341) is located below the shoulder (321) and at a distance (322) from the shoulder (321), the ejector surface (341) has a delayed position out of engagement from the shoulder (321) and an ejected position abutting against the shoulder (321), the ejector surface (341) is located in the delayed position in the case of the ejector plate (34) being in the initial position, and the ejector surface (341) is located in the ejected position in the case of the ejector plate (34) being in the raised position.

4. The injection mold according to claim 3, wherein the ejector plate (34) is provided with a mounting hole (342), the mounting hole (342) comprises a piercing section (343), a reaming section (344) and a shrinking section (345) which are sequentially communicated from top to bottom, the connecting body push rod (32) penetrates through the mounting hole (342), the upper end of the connecting body push rod (32) penetrates through the piercing section (343), the lower end of the connecting body push rod (32) penetrates through the shrinking section (345), the shoulder (321) is movably arranged in the reaming section (344), and the bottom wall of the reaming section (344) forms the ejector surface (341).

5. The injection mold of claim 4, wherein the ejection assembly (30) further comprises a compression spring (35) and a pressing member (36), the pressing member (36) is disposed on an upper surface of the ejection plate (34) and connected to the ejection plate (34), a lower end of the expanded bore section (344) extends to the ejection plate (34), an upper end of the expanded bore section (344) extends to the pressing member (36), the compression spring (35) is disposed in the expanded bore section (344) and sleeved on the connecting body push rod (32), a lower end of the compression spring (35) abuts against an upper surface of the shoulder (321), and an upper end of the compression spring (35) abuts against a top wall of the expanded bore section (344).

6. An injection mold according to claim 4, wherein the ejector plate (34) comprises an upper ejector plate (346) and a lower ejector plate (347) connected, the lower end of the ejector plate (31) passes through the upper ejector plate (346) and abuts against the upper surface of the lower ejector plate (347), the shrinkage section (345) is provided to the lower ejector plate (347), the expansion section (344) comprises a first expansion section (3441) and a second expansion section (3442) communicated with each other, the first expansion section (3441) is provided to the upper ejector plate (346), and the second expansion section (3442) is provided to the lower ejector plate (347).

7. An injection mold according to any one of claims 2 to 6,

the push plate (31) is provided with an avoiding hole (311), an avoiding groove (312) and a matching groove (313), the avoiding hole (311) vertically penetrates through the push plate (31), the rear mold core (21) penetrates through the avoiding hole (311), the avoiding groove (312) penetrates through the top wall of the push plate (31), two ends of the avoiding groove (312) are respectively communicated with the connecting body injection molding groove (11) and the avoiding hole (311), and the matching groove (313) is located at the upper end of the push plate (31) and is surrounded on the periphery of the avoiding hole (311); and/or the presence of a gas in the atmosphere,

the ejection assembly (30) comprises two push plate ejector rods (33), the two push plate ejector rods (33) are respectively arranged on two sides of the rear die core (21) and are connected with the push plates (31), the two push plates (31) are vertically movably arranged in the rear die shell (10) in a penetrating mode, and the lower ends of the two push plate ejector rods (33) are abutted to the ejection plate (34).

8. An injection mold according to any one of claims 1 to 6, further comprising a cooling water pipe and a return pipe, wherein the rear mold core (21) has a central hole and a return hole communicating with the central hole, a water outlet of the cooling water pipe communicates with a lower end of the central hole, a water inlet of the cooling water pipe communicates with a water source, and the return pipe communicates with the return hole.

9. An injection mould according to any one of the claims 2 to 6, characterized in that the rear mould shell (10) comprises a rear mould fixing member (12) and a rear mould plate member (13) which are connected, the rear mould plate member (13) is located above the rear mould fixing member (12), the rear mould assembly (20) is arranged in the rear mould plate member (13), a gap (14) is arranged between the rear mould plate member (13) and the rear mould fixing member (12), the ejector plate (34) is arranged in the gap (14), the ejector plate rod (33) and the connector push rod (32) are vertically movably arranged through the rear mould plate member (13), the lower end of the connector push rod (32) abuts against the rear mould fixing member (12), the lower end of the ejector plate rod (33) abuts against the ejector plate (34), and the ejector plate (31) is vertically movably arranged on the rear mould plate member (13).

10. An injection mold according to claim 9,

the rear mould fixing part (12) comprises a rear mould fixing plate (121) and two rear mould foot plates (122) which are connected, the rear mould fixing plate (121) extends along the horizontal direction, the rear mould foot plates (122) extend along the vertical direction, the two rear mould foot plates (122) are positioned between the rear mould fixing plate (121) and the rear mould plate part (13), and the rear mould fixing plate (121), the two rear mould foot plates (122) and the rear mould plate part (13) jointly enclose a gap (14);

the side die core (22) comprises a front side die (221), a rear side die (222) and side dies (223) which are arranged at intervals, the front side die (221) and the rear side die (222) can be arranged on the rear die plate (13) in a front-and-rear movement mode, and the side dies (223) can be arranged on the rear die plate (13) in a left-and-right movement mode;

the rear template component (13) comprises a rear template (131) and a rear inner mold (132) arranged in the rear template (131), the front side mold (221) and the rear side mold (222) can be arranged in the rear template (131) and the rear inner mold (132) in a front-and-back movement manner, the side mold (223) can be arranged in the rear template (131) and the rear inner mold (132) in a left-and-right movement manner, the connecting body injection molding groove (11) is arranged at the upper end of the rear inner mold (132), the rear mold core (21) is arranged in the rear inner mold (132) in a vertically extending manner, and the upper end of the rear mold core (21) penetrates through the rear inner mold (132);

the injection mold further comprises a front mold shell (40) positioned above the rear inner mold (132), the lower end of the front mold shell (40) is provided with a front mold core arranged corresponding to the rear mold assembly (20), and the front mold core and the injection molding part jointly form a product injection molding part;

injection mold includes two back model subassembly (20), two push pedal (31) and three connector push rod (32) and two front mould casing (40), two back model subassembly (20) interval set up in back model piece (13), two push pedal (31) corresponds two respectively back mould core (21) sets up, the connector is moulded plastics groove (11) and is included first groove section (111) and second groove section (112) that are linked together, the first connector push rod (32) and second the upper end of connector push rod (32) all stretches into first groove section (111), the third the upper end of connector push rod (32) stretches into second groove section (112), two preceding model core corresponds two respectively back model subassembly (20) set up.

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