CN115339060A - Multi-product shared injection mold - Google Patents

Abstract

The invention discloses a multi-product shared injection mold which comprises a fixed mold plate, a fixed mold pressing plate, a first sprue bush, a sprue plate and a second sprue bush, wherein a sprue plate positioning device is arranged between the sprue plate and the fixed mold plate; the injection molding machine also comprises a movable template, an injection molding core mechanism and a core positioning device, wherein a core mechanism guiding device is arranged through the injection molding core mechanism; the movable mould plate is connected with a mould foot, and the inner side of the mould foot is provided with an injection molding piece ejection device and an ejection limiting guide device. The sprue plate and the injection core mechanism can be replaced according to the processing model of the injection product, the sprue plate positioning device and the core positioning device which are correspondingly arranged are used for locking and fixing the corresponding structures after replacement, the injection mold with the sprue plate and the injection core mechanism can complete the processing production of the injection product with the similar projection area, and the replacement of a whole set of injection mold is avoided, so that the matching cost of the injection mold during the production of the injection product is saved, and the occupation of the storage space of the injection mold is also facilitated to be reduced.

Description

Multi-product shared injection mold

technical field

The invention relates to the technical field of production equipment for injection molding products, in particular to an injection mold shared by multiple products.

Background technique

With the development of social economy and the advancement of science and technology, injection molding technology, as the main technology of plastic product molding, has been valued by more and more production and application fields. However, injection molding production is limited by product structure, and special injection molds need to be made according to product size and structure, so a large number of product molds are produced. The material used to make molds is special steel for molds. Mold steels are expensive, and the processing and design of a large number of injection molds has become a burden for manufacturers. Coupled with the diversification of injection molding product models, it is also an important factor that causes a large amount of injection molds. The storage of a large number of molds seriously reduces the available space of the production workshop and further increases the production cost of the enterprise. For product users, the increased production cost is shared virtually, so the purchase cost is also gradually increased. Based on the above factors, further improvements are needed on the currently used injection molds to minimize production and procurement costs.

Contents of the invention

The technical problem to be solved by the present invention is to provide a multi-product shared injection mold with simple structure and high reliability, which can help reduce mold manufacturing cost and save mold storage space, which can share mold cores for similar injection molded products.

In order to solve the above-mentioned technical problems, the technical solution of the present invention is: multi-product shared injection mold, including a fixed template, one side of the fixed template is fixedly connected with a fixed mold pressing plate, which runs through the fixed mold pressing plate and the fixed template for limit installation There is a sprue sleeve 1, and a sprue 1 is formed through the sprue sleeve 1, and a sprue plate is installed on the other side of the fixed formwork opposite to the fixed mold pressing plate, and a sprue plate is installed through the sprue plate. The sprue sleeve 2 connected with the sprue sleeve 2 is provided with the gate 2 connected with the gate 1 through the sprue sleeve 2, and the joint between the sprue sleeve 1 and the sprue sleeve 2 is fixed. A sealing ring is provided, and the gate plate is detachably installed in the fixed formwork and a gate plate positioning device is provided between the fixed formwork;

Opposite to the fixed template, there is a movable template for cooperating use. An injection molding core mechanism is detachably installed on the movable template, and a core positioning device is provided between the movable template and the injection molding core mechanism, which runs through the The above-mentioned injection molding core mechanism is equipped with a guide device for the core mechanism;

The side of the movable template away from the fixed template is fixedly connected with a mold foot through a bracket, and a ejector hole is provided through the mold foot, and the inner side of the mold foot is directly opposite to the ejector hole. The injection molded part ejection device used in conjunction with the core mechanism, and the ejection limit guide device is also installed on the mold foot.

As a preferred technical solution, the sprue plate positioning device includes a positioning plate chamber 1 provided in the fixed template, and a positioning handle chamber 1 is connected to the positioning plate chamber 1, and a positioning handle chamber 1 is installed on the outside of the fixed template. Block the pressure plate 1 of the positioning plate chamber 1 and the positioning handle chamber 1, pass through the pressure plate 1 and be provided with a positioning plate outlet 1 communicating with the positioning plate chamber 1, the positioning plate chamber 1 and the positioning handle chamber 1 The positioning operation part is installed.

As a preferred technical solution, the core positioning device includes a positioning plate chamber 2 arranged in the movable template, a positioning handle chamber 2 is connected to the positioning plate chamber 2, and a sealing handle for sealing is installed on the outside of the movable template. Block the pressure plate 2 of the positioning plate chamber 2 and the positioning handle chamber 2, through the pressure plate 2, a positioning plate outlet 2 communicating with the positioning plate chamber 2 is provided, and the positioning plate chamber 2 and the positioning handle chamber 2 are also The positioning operation part is installed.

As a preferred technical solution, the positioning operation member includes a positioning handle that is installed through the positioning handle chamber 1 or the positioning handle chamber 2, and the inner end of the positioning handle is fixedly connected with the positioning plate chamber 1. Or the positioning plate that the two positioning plate chambers cooperate.

As a preferred technical solution, two limiting grooves are oppositely provided on the outer wall of the gate plate, and corresponding limiting protrusions are provided on the inner wall of the fixed template corresponding to each of the limiting grooves.

As a preferred technical solution, the outer wall of the injection molding core mechanism is oppositely provided with two limiting grooves 2, and the inner wall of the movable template is provided with corresponding limiting protrusions 2 corresponding to each of the limiting grooves 2. .

As a preferred technical solution, the injection molding core mechanism includes a core that is detachably mounted on the movable template and docked with the sprue plate, and the side of the core that is facing the sprue plate is provided with a The gate two connected cavity, the side of the core away from the gate plate is fixedly connected with a core backing plate, through the core backing plate and the core limit movable inserted several Push rod 2, the end of the push rod 2 is flush with the surface of the core shape, and the upper limit of the push rod 2 located in the core shape backing plate is fitted with a return spring 2.

As a preferred technical solution, the guiding device of the core-type mechanism includes a guide post 1 arranged and installed on the ejection device of the injection molded part, and a guide post 2 is installed through the core-type backing plate and the core-type limiter, And the second guide post is set on the outer periphery of the cavity, the second guide post is arranged in one-to-one correspondence with the guide post, and the upper limit sleeve of the second guide post in the core type backing plate is provided with a reset Spring three, blind hole guide post holes two used in conjunction with each of the guide post two are arranged on the fixed template.

As a preferred technical solution, the ejection device for injection molded parts includes an ejection backing plate arranged inside the mold foot, and an ejection plate is fixedly installed on the side of the ejection backing plate facing the injection molding core mechanism, A ejector pin 1 extending toward the core-shaped backing plate is arranged and installed on the ejector plate, and the ejector pin 1 and the ejector pins 2 are arranged in a one-to-one correspondence.

As an improvement to the above technical solution, the ejection limit guide device includes a guide rod arranged and installed through the mold foot, the ejection pad and the ejector plate, and the guide rod is connected with the ejector The ejector plate and the ejector plate are movably plugged and fitted, the inner end of the guide rod extends into the movable formwork, and the guide rod between the ejector plate and the core-shaped plate A return spring is set in the set, and a positioning block is arranged on the mold foot, and the positioning block respectively passes through the ejection pad and the ejection plate to be movably plugged in. The guide rod, the positioning block They are respectively arranged on the outer side of the push rod one.

Due to the adoption of the above technical solution, multiple products share an injection mold, including a fixed template, one side of the fixed template is fixedly connected with a fixed mold pressing plate, and a sprue sleeve 1 is installed through the fixed mold pressing plate and the fixed template to limit the position, A sprue 1 is formed through the sprue sleeve 1, and a sprue plate is installed on the other side of the fixed formwork opposite to the fixed mold pressing plate, and a sprue plate is provided to connect with the sprue sleeve through the sprue plate. The sprue bushing two, through the sprue bushing two, is provided with the gate two connected with the gate one, and the joint between the sprue bushing one and the sprue bushing two is fixedly provided with a sealing ring, so The gate plate is detachably installed in the fixed formwork and a gate plate positioning device is provided between the fixed formwork; a movable formwork used in conjunction with the fixed formwork is provided, and the movable formwork is detachable An injection molding core mechanism is installed, a core positioning device is provided between the movable template and the injection molding core mechanism, and a core mechanism guiding device is movably installed through the injection molding core mechanism; the movable template is far away from the One side of the fixed template is fixedly connected with a mold foot through a bracket, and a ejector pin hole is provided through the mold foot, and an injection molding hole used in conjunction with the injection molding core mechanism is provided on the inner side of the mold foot, facing the ejector pin hole. Part ejection device, and the ejection limit guide device is also installed on the mold foot. The invention has the following beneficial effects: the sprue plate and the injection molding core mechanism can be replaced according to the processing model of the injection molding product, and the replacement operation is simple and convenient. The structure can be locked and fixed, which realizes the replacement of the gate plate and the injection core mechanism of the injection mold to complete the processing and production of injection products with similar projected areas, avoiding the need to replace the entire set of injection molds, thereby saving the cost of injection molds during the production of injection products. The supporting cost also helps to reduce the storage space occupied by injection molds, and reduces the purchase cost of injection molding products for users to a certain extent.

Description of drawings

The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. in:

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is a schematic diagram of an enlarged structure at S in Fig. 1;

Fig. 3 is a schematic diagram of the A-A direction structure of the gate plate positioning device in Fig. 1;

Fig. 4 is a B-B partial sectional structure schematic diagram of the sprue plate positioning device in Fig. 1;

Fig. 5 is a C-C sectional structural schematic diagram of positioning plate one in Fig. 3;

Fig. 6 is a schematic structural view of platen 1 in the embodiment of the present invention;

7 is a schematic diagram of the external structure of the injection molding core mechanism of the embodiment of the present invention;

Fig. 8 is a schematic diagram of the external structure of the locked state of the injection molding core mechanism of the embodiment of the present invention;

In the figure: 1-fixed template; 2-fixed mold pressure plate; 3-gate one; 4-gate one; 5-gate plate; ;9-Limiting groove 1; 10-Limiting protrusion 1; 11-Positioning plate chamber 1; 12-Positioning handle chamber 1; 13-Pressure plate 1; Plate one; 17-moving template; 18-core type; 19-cavity; 20-core backing plate; 21-ejector two; 22-return spring two; 23-limit slot two; Two; 25-Guide column one; 26-Guide column two; 27-Return spring three; 28-Positioning handle two; 29-Positioning plate two; 30-Bracket; 34-ejector plate; 35-ejector rod one; 36-guide rod; 37-return spring one; 38-positioning block.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, further elaborate the present invention. In the following detailed description, certain exemplary embodiments of the invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments can be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in Fig. 1 and Fig. 2, multi-product common injection mold comprises fixed template 1, and one side of said fixed template 1 is fixedly connected with fixed mold pressing plate 2, and said fixed template 1 and said fixed mold pressing plate 2 are fixed connected by bolts. A sprue bushing 3 is installed through the fixed mold platen 2 and the fixed template 1 in a limited position, and a sprue 4 is formed through the sprue bush 3, and the other side of the fixed template 1 is connected to the fixed template 1. The fixed mold pressing plate 2 is relatively equipped with a sprue plate 5, and the feed port of the sprue sleeve-3 is arranged on the outside of the fixed mold pressing plate 2, and the discharge port of the sprue sleeve-3 stops at the gate The top of mouth plate 5. Through the sprue plate 5, there is a sprue bushing 2 6 docked with the sprue bushing 1 3, that is, the feed port and the discharge port of the sprue bushing 2 6 are connected with the sprue plate 5 respectively. The upper and lower surfaces are arranged flush, and the sprue bushing 2 6 is provided with a sprue 2 7 communicating with the gate 1 4, and the sprue bushing 3 and the sprue bushing 2 6 are fixed at the joint A sealing ring 8 is provided, and the sealing ring 8 can be set as a sealing ring of brass or red copper structure, which is used to realize the sealing connection between the gate one 4 and the gate two 7, so as to prevent the delivery of injection molding materials Leakage occurs. Various types of gates such as straight gates and point gates can also be arranged on the gate plate 5, and corresponding thermoplastic runners can also be added on the top of the gate plate 5 according to the gate structure and product materials. .

In this embodiment, the sprue plate 5 is detachably installed in the fixed formwork 1, and the outer wall of the sprue plate 5 is oppositely provided with two limiting grooves 9, and the inner wall of the fixed formwork 1 corresponds to Each of the position-limiting grooves-9 is provided with a position-limiting protrusion-10 for cooperating, and the position-limiting protrusion-10 is arranged on both sides of the gate plate 5 in the length direction, and the gate plate 5 It can be pushed out from the fixed template 1 so as to be replaced according to the production plan of the injection molded product, and realize the sharing of the main structure of the injection mold for multiple or multiple types of products. The plugging fit of the limiting protrusion-10 and the limiting groove-9 plays a guiding role when replacing the gate plate 5, and plays an auxiliary limiting role after the gate plate 5 is replaced. The position is fixed, and finally the rapid replacement of the gate plate 5 is realized, and the operation is simple.

As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a sprue plate positioning device is provided between the fixed formwork 1 and the sprue plate 5 for realizing the installation of the sprue plate 5 For the final positioning, two sprue plate positioning devices can be arranged oppositely on both sides of the sprue plate 5, so as to improve the stability of positioning. The sprue plate positioning device includes a positioning plate chamber-11 arranged in the fixed template 1, which is connected with the positioning plate chamber-11 and is provided with a positioning handle chamber-12, and the outer side of the fixed template 1 is embedded with a The pressure plate 13 of the positioning plate chamber 11 and the positioning handle chamber 12 is blocked, and the pressure plate 13 is embedded and fixed with the fixed template 1 through fixing bolts. A positioning plate outlet 14 is provided through the pressing plate 13 to communicate with the positioning plate chamber 11, and a positioning operation member is installed in the positioning plate chamber 11 and the positioning handle chamber 12. Specifically, the positioning operation member includes a positioning handle 15 that is installed and installed through the positioning handle chamber 12, and the positioning handle 15 extends to the outer end of the fixed template 1 and is arranged in an L-shaped structure. The inner end of the positioning handle one 15 is fixedly connected with a positioning plate one 16 cooperating with the positioning plate chamber one 11 . When not in use, the positioning plate one 16 is located in the positioning plate chamber one 11; when in use, turning the positioning handle one 15 drives the positioning plate one 16 to rotate synchronously, and the end of the positioning plate one 16 is controlled by the positioning plate one. The positioning plate outlet one 14 protrudes from the outside of the positioning plate chamber one 11 and contacts with the width surface of the gate plate 5 to realize the positioning of the gate plate 5 after installation.

In this embodiment, a movable template 17 is arranged opposite to the fixed template 1, and the movable template 17 is arranged below the fixed template 1, and an injection mold core is detachably installed on the movable template 17. mechanism, the injection molding core mechanism is the same as the sprue plate 5, which is a detachable and replaceable structure, so as to cooperate with the sprue plate 5 to form injection molded products. Specifically, as shown in Figures 1 and 7, the injection molding core mechanism includes a core 18 that is detachably mounted on the movable template 17 and docked with the gate plate 5, and the core 18 faces the One side of the gate plate 5 is provided with a cavity 19 communicated with the gate two 7, in fact, after the fixed plate 1 and the movable plate 17 are molded together, the gate plate 5 and the The core 18 surrounds said cavity 19 . The side of the core form 18 away from the gate plate 5 is fixedly connected with a core form backing plate 20 , and the core form 18 and the core form backing plate 20 are connected by fixing bolts to form an integrated combined structure.

Through the core type backing plate 20 and the core type 18, a number of two ejector rods 21 are inserted and installed, and the ends of the two ejector rods 21 are flush with the surface of the core type 18, and are located on the The upper limit of the push rod two 21 in the core-shaped backing plate 20 is covered with a return spring two 22 . Specifically, a number of ejection holes 1 are arranged through the core-shaped backing plate 20 , and ejection holes 2 arranged coaxially with the ejection holes 1 are arranged through the core shape 18 , and The inner diameter of the ejection hole 1 is slightly larger than the inner diameter of the ejection hole 2, so that the return spring 2 22 is installed in a limited position, and is used to push the injection-molded product through the cooperation of each of the ejector rods 2 21 by means of external force. Ejection, after the product is ejected, under the action of the return spring 22, each of the ejector rods 21 automatically returns.

The replaceable installation method of the injection molding core mechanism is similar to the realization of the gate plate 5, that is, there are two opposite sides of the core type backing plate 20 and the length direction of the core type 18. Two limiting grooves 23, the inner wall of the moving template 17 is provided with a limiting protrusion two 24 corresponding to each of the limiting grooves 23, so as to realize the guiding of the injection molding core mechanism during installation and after installation. limit etc.

A core mechanism guide device is installed through the injection molding core mechanism to realize the guidance of mold opening and mold closing. The guiding device of the core mechanism includes a guide post 25 arranged and installed, and the guide post 1 25 passes upward through the movable template 17 and ends below the core backing plate 20 , and runs through the core backing plate 20 The second guide post 26 is installed in a limit position with the core type 18, and the second guide post 26 is surrounded by the outer periphery of the cavity 19, and the second guide post 26 is set in one-to-one correspondence with the first guide post 25 . The first through-hole guide post hole that runs through the core type backing plate 20, the third through-hole guide post hole that runs through the core type 18, the first through-hole guide post hole and the third through-hole guide post hole One corresponding and coaxially arranged, the fixed template 1 is provided with blind hole guide post holes two corresponding to each of the three through hole guide post holes and coaxially arranged, and the diameter of the through hole guide post hole one greater than the diameter of the through-hole guide post hole three, the diameter of the through-hole guide post hole three is consistent with the diameter of the blind hole guide post hole two, and the guide post two 26 is arranged in the through-hole guide post hole 1. Inside the through-hole guide post hole 3 and the blind hole guide post hole 2. The upper limit of the guide post two 26 in the core type backing plate 20 is set with a return spring three 27, the guide post one 25, the guide post two 26 are used in conjunction with the blind hole guide post hole two, and To realize the guiding of the injection molding core mechanism.

As shown in Figure 1 and Figure 8, a core positioning device is provided between the movable template 17 and the injection molding core mechanism, for realizing the positioning of the injection molding core mechanism after replacement, and the core positioning device Two can be arranged on both sides of the injection molding core mechanism to improve the positioning stability of the injection molding core mechanism. The core positioning device includes a positioning plate chamber 2 arranged in the movable template 17, and a positioning handle chamber 2 is connected with the positioning plate chamber 2, and a positioning handle chamber 2 is installed on the outside of the movable template 17 to block the positioning plate. Plate chamber 2 and the pressure plate 2 of the positioning handle chamber 2, and the pressure plate 2 is embedded and fixed with the movable template 17 through fixing bolts. A positioning plate outlet 2 connected to the positioning plate chamber 2 is arranged through the pressure plate 2, and a positioning operation member is also installed in the positioning plate chamber 2 and the positioning handle chamber 2. Specifically, the positioning operation member includes a positioning handle 2 28 that is installed through the positioning handle chamber 2 to limit the installation. The positioning handle 2 28 extends to the outer end of the movable template 17 and is arranged in an L-shaped structure. The inner end of the positioning handle 2 28 is fixedly connected with a positioning plate 2 29 cooperating with the positioning plate chamber 2. When not in use, the second positioning plate 29 is located in the second positioning plate chamber; when in use, rotating the positioning handle two 28 drives the second positioning plate 29 to rotate synchronously, and the end of the second positioning plate 29 is formed by the The positioning plate outlet 2 protrudes from the outside of the positioning plate chamber 2 and contacts the width surface of the injection molding core mechanism to realize the positioning of the injection molding core mechanism after installation. The structure and function of this part are similar to those of the sprue plate positioning device, and the illustrations and corresponding parts are not marked.

The side of the movable template 17 away from the fixed template 1 is fixedly connected with a mold foot 31 through a bracket 30, and the mold foot 31, the bracket 30 and the movable template 17 are connected by fixing bolts, The feet 31 and the bracket 30 realize the connection and installation of the movable template 17 and the injection molding machine. An ejector pin hole 32 is opened through the middle of the mold foot 31 , and the ejector pin hole 32 is set corresponding to the ejector pin on the injection molding machine for ejecting the injection molded product.

The inner side of the mold foot 31 is facing the ejector pin hole 32 and is provided with an ejection device for injection molded parts used in conjunction with the injection molding core mechanism. On the device, the injection molded part ejector is in contact with the ejector rod, and driven by the ejector rod, the injection molded part ejector moves toward the core type backing plate 20 to eject the injection molded product. The ejection device for injection molded parts includes an ejection backing plate 33 arranged inside the mold foot 31, and an ejection plate 34 is fixedly installed on the side of the ejection backing plate 33 facing the injection molding core mechanism. The ejection backing plate 33 and the ejection plate 34 are connected by fixing bolts to form an integrated combined structure. The first ejector rod 35 and the first guide post 25 extending toward the core-shaped backing plate 20 are installed on the ejector plate 34 , and the first ejector rod 35 and the second ejector rod 21 are provided in one-to-one correspondence. . When the ejector rod pushes the ejector plate 34 and the ejector rod one 35 to move synchronously, the ejector rod one 35 pushes the corresponding ejector rod two 21 to move, and the ejector rod two 21 moves toward the The cavity 19 moves to eject the product formed in the cavity 19.

The ejection limit guide device is also installed on the mold foot 31, which provides guidance and limitation for the displacement of the ejection plate 34 and the ejection backing plate 33, and realizes the ejection after the injection molded product is ejected. The automatic return of the ejection plate 34 and the ejection backing plate 33 . Specifically, the ejection limit guide device includes a guide rod 36 arranged and installed through the mold foot 31, the ejection pad 33 and the ejector plate 34, and the guide rod 36 is connected with the ejector The backing plate 33 and the ejector plate 34 are movably plugged and fitted, and the inner end of the guide rod 36 extends into the movable template 17, and the guide rod 36 is a link between the ejection backing plate 33 and the ejector plate 34. The displacement of the exit plate 34 forms a guide. And the guide rod 36 between the ejector plate 34 and the core type backing plate 20 is set with a return spring 37, and the guide rod 36 and the positioning block 38 are arranged on the ejector rod 1 respectively. 35 outside. When the product is ejected, the ejector plate 34 compresses the return spring one 37 to obtain return power. Positioning blocks 38 are arranged and installed on the mold foot 31, and the positioning blocks 38 respectively pass through the ejection backing plate 33 and the ejection plate 34 to be movably plugged and arranged, and the positioning blocks 38 are for the ejection The displacement distance between the backing plate 33 and the ejection plate 34 forms a limit.

In this embodiment, the materials of the fixed template 1, the movable template 17, the sprue plate 5, the core 18, and the core backing plate 20 can be P20 or S136 mold steel, and the Push rod one 35, said push rod two 21, said guide post one 25 and said guide post two 26 can be set as CPM 9V tool steel steel, and said sprue bush one 3 and said sprue bush two 6 can be Set as Cr12MOV mold steel, the material of the fixed mold platen 2, the bracket 30, the die foot 31, the ejection backing plate 33, and the ejection plate 34 can be set to 45# steel or A3 steel .

When carrying out injection molding product production, first carry out the installation and positioning of described sprue plate 5:

That is to say, the fixed platen 1 , the fixed platen 2 , the movable platen 17 , the bracket 30 and the die foot 31 are installed on the mold frame of the injection molding machine. Push the sprue plate 5 with the sprue bushing 2 6 into the fixed template 1 through the limiting groove 1 along the limiting protrusion 1 to a suitable position, and turn the positioning handle -15, the positioning handle -15 drives the positioning plate -16 located in the positioning plate chamber -11 to rotate, and the positioning plate -16 part turns out through the positioning plate outlet -14, and clings to On the outer wall of the sprue plate 5 , the positioning of the sprue plate 5 after positioning and installation is realized. At this time, the sprue bushing 2 6 and the sprue bushing 1 3 are sealed and docked through the sealing ring 8 .

Then carry out the installation and positioning of related mechanisms such as the core type 18 and the core type backing plate 20:

Install the push rod 2 21 and the return spring 2 22 in the core type 18 and the core type backing plate 20 to form a combined installation body. Lift two 24 to push the above-mentioned assembly into a suitable position in the movable template 17, turn the positioning handle two 28, and the positioning handle two 28 drives the positioning plate two 29 installed in the positioning plate chamber two to rotate , so that part of the positioning plate 29 turns out of the outdoor through the positioning plate outlet 2, and clings to the outer wall of the injection molding core mechanism (the core type backing plate 20), so as to realize the positioning and installation of the combined installation body .

After the above two steps are completed, set the injection molding process parameters, and after reaching the injection molding conditions, take manual operation as an example: close the mold and start the injection molding process, and the material passes through the gate-4 on the sprue sleeve-3 and the gate-4. The gate two 7 on the gate sleeve two 6 enters into the cavity 19, and the product is molded in the cavity 19, and after being formed through the pressure maintaining and cooling procedures, the injection molding machine on the injection molding machine is started. The thimble enters the program. The ejector rod in the injection molding machine moves forward through the ejector rod hole 32 opened on the mold foot 31, driving the ejector pad 33 and the ejector plate 34 to move forward, so that the The return spring 1 37 on the guide rod 36 is compressed, and the ejector rod 1 35 installed on the ejector plate 34 pushes the ejector rod 2 21 to move forward synchronously, ejects the molded product, and compresses and installs it. The return spring two 22 on the push rod two 21. The first guide post 25 installed on the ejector plate 34 pushes the second guide post 26 into the blind hole guide post hole two to complete the mold positioning, and compresses the second guide post 26. Describe back-moving spring three 27.

After the molded product is ejected, start the ejector pin retraction program, and the ejector rod in the injection molding machine is retracted. After losing pressure, the compressed part of the return spring 1 37 is stretched, driving the ejector plate 34 and the ejector pad. The plate 33 returns to the position before ejection, and the ejection plate 34 and the ejection backing plate 33 are reset while driving the ejector pin 1 35 and the guide post 1 25 to return to the position before ejection, the ejector pin 35 and the ejector pin 1 35 The first guide post 25 is retreated so that the return spring two 22 and the return spring three 27 are stretched and reset without pressure, driving the ejector rod two 21 and the guide post two 26 to retreat and return to the position before ejection, and an injection molding process is completed. cycle.

When the ejection device of the injection molded part is out of control and the return spring 1 37 is pressed to failure, the upper plane of the limit block touches the movable template 17, and the ejection action is forcibly stopped. When it is necessary to replace the injection molding of the product, the ejector rod 2 21, the return spring 2 22, the core type 18 and the core type backing plate 20 are formed into a combined installation body, which can be produced after replacement.

The sprue plate and the injection molding core mechanism of the present invention can be replaced according to the processing model of the injection molding product, and the replacement operation is simple and convenient. After the replacement, the corresponding structure is locked and fixed by using the corresponding sprue plate positioning device and the core type positioning device. That is, the replacement of the gate plate and the injection core mechanism of the injection mold can complete the processing and production of injection products with similar projected areas, avoiding the need to replace the entire set of injection molds, thereby saving the supporting costs of injection molds during the production of injection products. It helps to reduce the storage space occupied by injection molds, and reduces the purchase cost of injection molding products for users to a certain extent.

The description of the present invention has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and changes will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to better explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention and design various embodiments with various modifications as are suited to the particular use.

Claims (10)

1. Many products sharing injection mold, including the fixed die plate, fixed die plate one side fixedly connected with cover half clamp plate, its characterized in that: a first sprue bush is installed in a limiting mode through the fixed die pressing plate and the fixed die plate, a first sprue is formed through the first sprue bush, a second sprue bush in butt joint with the first sprue bush is installed on the other side of the fixed die plate opposite to the fixed die pressing plate through the second sprue bush, a second sprue communicated with the first sprue is arranged through the second sprue bush, a sealing ring is fixedly arranged at the butt joint of the first sprue bush and the second sprue bush, the first sprue bush is detachably installed in the fixed die plate, and a positioning device for the first sprue bush is arranged between the first sprue bush and the fixed die plate;

a movable template matched with the fixed template is arranged opposite to the fixed template, an injection core mechanism is detachably mounted on the movable template, a core positioning device is arranged between the movable template and the injection core mechanism, and a core mechanism guiding device is movably mounted through the injection core mechanism;

one side of the movable mould plate, which is far away from the fixed mould plate, is fixedly connected with a mould foot through a support, a ejector rod hole is arranged through the mould foot, an injection part ejection device matched with the injection core type mechanism for use is arranged on the inner side of the mould foot, which is right opposite to the ejector rod hole, and the mould foot is also provided with an ejection limiting guide device.

2. The multi-product common injection mold of claim 1, wherein: the sprue plate positioning device comprises a first positioning plate chamber arranged in the fixed template, a first positioning handle chamber communicated with the first positioning plate chamber, a first pressing plate used for plugging the first positioning plate chamber and the first positioning handle chamber is embedded in the outer side of the fixed template, a first positioning plate outlet communicated with the first positioning plate chamber penetrates through the first pressing plate, and a positioning operation part is installed in the first positioning plate chamber and the first positioning handle chamber.

3. The multi-product common injection mold of claim 2, wherein: the core type positioning device comprises a second positioning plate chamber arranged in the movable template, a second positioning handle chamber communicated with the second positioning plate chamber is arranged, a second pressing plate used for plugging the second positioning plate chamber and the second positioning handle chamber is embedded in the outer side of the movable template, a second positioning plate outlet communicated with the second positioning plate chamber is arranged through the second pressing plate, and positioning operation parts are also arranged in the second positioning plate chamber and the second positioning handle chamber.

4. The multi-product common injection mold of claim 3, wherein: the positioning operation part comprises a positioning handle which penetrates through the first positioning handle chamber or the second positioning handle chamber and is installed in a limiting mode, and a positioning plate matched with the first positioning plate chamber or the second positioning plate chamber is fixedly connected to the inner end of the positioning handle.

5. The multi-product common injection mold of claim 4, wherein: two first limiting grooves are oppositely formed in the outer wall of the sprue plate, and first limiting bulges matched with the first limiting grooves are arranged on the inner wall of the fixed die plate and correspond to the first limiting grooves.

6. The multi-product common injection mold of claim 4, wherein: two second limiting grooves are oppositely formed in the outer wall of the injection molding core type mechanism, and second limiting protrusions matched with the second limiting grooves are arranged on the inner wall of the movable template corresponding to the second limiting grooves.

7. The multi-product common injection mold of claim 1, wherein: the core type mechanism of moulding plastics including demountable installation in on the movable mould board and with the core type of runner board butt joint, the core type orientation one side of runner board be equipped with the die cavity of two intercommunications of runner, the core type is kept away from one side fixedly connected with core type backing plate of runner board runs through the core type backing plate with the spacing activity cartridge of core type has a plurality of ejector pins two, the tip of ejector pin two with the surface of core type flushes, and is located in the core type backing plate two spacing covers are equipped with reset spring two on the ejector pin.

8. The multi-product common injection mold of claim 7, wherein: the core type mechanism guiding device comprises a first guide post arranged on the injection molding piece ejection device, a second guide post penetrating through the core type base plate and the core type limiting device, the second guide post is arranged on the periphery of the cavity in a surrounding mode, the second guide post and the second guide post are arranged in a one-to-one corresponding mode, a third reset spring is sleeved on the second guide post in the core type base plate in a limiting mode, and a second blind hole guide post hole matched with the second guide post for use is arranged on the fixed die plate.

9. The multi-product common injection mold of claim 7, wherein: the injection molding ejection device comprises an ejection base plate arranged on the inner side of the mold foot, an ejection plate is fixedly arranged on one side, facing the injection molding core type mechanism, of the ejection base plate, a first ejector rod is arranged on the ejection plate, facing the core type base plate, extends, and the first ejector rod and the second ejector rod are arranged in a one-to-one correspondence mode.

10. The multi-product common injection mold of claim 9, wherein: the ejection limiting guide device comprises a guide rod penetrating through the die foot, the ejection base plate and the ejector plate, the guide rod is movably connected with the ejection base plate and the ejector plate in an inserting mode, the inner end of the guide rod extends into the movable die plate, a first reset spring is sleeved on the guide rod between the ejector plate and the core type base plate, a positioning block is further arranged on the die foot and penetrates through the ejection base plate and the ejector plate in a movable inserting mode, and the guide rod and the positioning block are respectively arranged on the outer side of the first ejector rod.

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