CN219789120U - Injection mold and injection system - Google Patents

Abstract

The disclosure relates to the technical field of injection molding equipment, in particular to an injection mold and an injection molding system. The injection mold comprises a transmission mechanism and a threaded core; the transmission mechanism comprises a first bevel gear, a second bevel gear, a central gear and a plurality of sub gears, wherein the first bevel gear is used for being in transmission connection with a hydraulic system of the injection molding machine, the second bevel gear is meshed with the first bevel gear, the central gear and the second bevel gear are coaxially arranged, the plurality of sub gears are arranged at intervals along the circumferential direction of the central gear, and the plurality of sub gears are respectively meshed with the central gear; the injection mold can reduce the transmission level, reduce the structural complexity of the injection mold and shorten the injection molding period; simultaneously, can drive a plurality of screw thread cores and rotate together, realize taking the drawing of patterns of internal thread product.

Description

Injection molds and injection systems

Technical field

The present disclosure relates to the technical field of injection molding equipment, and in particular, to an injection mold and an injection molding system.

Background technique

When existing injection molds process products with internal threads, they usually use a rotary dethreading method to take out the product. The existing implementation method is to use chains, gears, racks, screws, etc. to remove the moving parts of the mold when opening the mold. Power sources such as linear motion or motor rotation are converted into the rotation of the threaded core. There are many transmission stages. If multiple products are to be molded at one time, the overall height of the injection mold will be high, the structure will be complex, and the injection molding cycle will be long.

Utility model content

The purpose of this disclosure is to provide an injection mold and an injection molding system to alleviate the technical problems in the prior art that if multiple products are to be molded at one time, the injection mold structure will be complex and the injection molding cycle will be long.

Based on the above purpose, the present disclosure provides an injection mold, including a transmission mechanism and a threaded core; the transmission mechanism includes a first bevel gear, a second bevel gear, a center gear and a plurality of sub-gears, and the first bevel gear is For transmission connection with the hydraulic system of the injection molding machine, the second bevel gear meshes with the first bevel gear, the center gear is coaxially arranged with the second bevel gear, and a plurality of sub-gears are arranged along the center The gears are arranged at circumferential intervals, and a plurality of the sub-gears are meshed with the central gear respectively; the threaded cores are connected to the sub-gears, the number of the threaded cores is multiple, and the plurality of threads are The core corresponds to a plurality of sub-gears one by one.

In one embodiment of the present disclosure, the injection mold further includes a panel arranged from top to bottom, an upper cavity plate, a lower cavity plate, a first supporting plate, a second supporting plate, a third supporting plate and a fourth supporting plate. and a bottom plate; the bottom plate and the panel are used for fixed connection with the injection molding machine;

An upper cavity is installed in the upper cavity plate, a lower cavity is installed in the lower cavity plate, an outer core plate and an outer core are installed on the first supporting plate, the center gear and the The sub-gear is installed on the second supporting plate, and the threaded core is installed on the fourth supporting plate;

The transmission mechanism also includes a first transmission shaft, the first transmission shaft passes through the second supporting plate, the third supporting plate and the fourth supporting plate;

The first bevel gear and the second bevel gear are both installed between the fourth supporting plate and the bottom plate.

In one embodiment of the present disclosure, the outer core is provided with a limiting portion, and the limiting portion is used to limit the rotation of the injection molded product.

In one embodiment of the present disclosure, the limiting portion includes a plurality of protrusions, and the plurality of protrusions are arranged at intervals along the circumference of the outer core.

In one embodiment of the present disclosure, a mold foot and an ejector plate are further included, and the mold foot is installed between the fourth supporting plate and the bottom plate, so that the space between the fourth supporting plate and the bottom plate forming a space for installing the first bevel gear, the second bevel gear and the ejector plate;

The ejection pin plate is located above the bottom plate, and the ejection pin plate is equipped with ejection pins, and the ejection pins are used to eject the injection molded product.

In one embodiment of the present disclosure, the transmission mechanism further includes a first spur gear, a second spur gear and a second transmission shaft. The first spur gear is used for transmission connection with the hydraulic system of the injection molding machine, and the third spur gear is used for transmission connection with the hydraulic system of the injection molding machine. Two spur gears mesh with the first spur gear, and the second spur gear is connected to the first bevel gear through the second transmission shaft.

In one embodiment of the present disclosure, both the first bevel gear and the second bevel gear are straight bevel gears.

Based on the above purpose, the present disclosure also provides an injection molding system, including the injection mold.

In one embodiment of the present disclosure, the injection molding system further includes a hydraulic system for providing power to the transmission mechanism.

In one embodiment of the present disclosure, the injection molding system further includes a manipulator for gripping the material handle.

The beneficial effects of this disclosure mainly include:

The injection mold provided by the present disclosure includes a transmission mechanism and a threaded core; the transmission mechanism includes a first bevel gear, a second bevel gear, a center gear and a plurality of sub-gears, and the first bevel gear is used to communicate with the hydraulic pressure of the injection molding machine. The system is connected in transmission, the second bevel gear meshes with the first bevel gear, the sun gear is coaxially arranged with the second bevel gear, and a plurality of sub-gears are arranged at intervals along the circumferential direction of the sun gear. , and a plurality of sub-gears are meshed with the central gear respectively; the thread core is connected to the sub-gear, the number of the thread cores is multiple, and the plurality of thread cores are connected to a plurality of The sub-gears correspond one to one.

Based on this structure, the injection mold provided by the present disclosure uses the first bevel gear and the second bevel gear instead of chain transmission, which can reduce the number of transmission stages, reduce the structural complexity of the injection mold, and shorten the injection cycle; at the same time, by setting a center gear , can drive multiple sub-gears to rotate at the same height at the same time. Since multiple thread cores correspond to multiple sub-gears one-to-one, it can drive multiple thread cores to rotate together at the same time to achieve demoulding of products with internal threads.

Description of the drawings

In order to more clearly explain the specific embodiments of the present disclosure or the technical solutions in the prior art, the drawings that need to be used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description The drawings illustrate some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of an injection mold provided by an embodiment of the present disclosure;

Figure 2 is a schematic diagram of the internal structure of an injection mold provided by an embodiment of the present disclosure;

Figure 3 is a schematic diagram of the internal structure of the injection mold provided by an embodiment of the present disclosure from another perspective;

Figure 4 is a top view of the center gear and sub-gears in the injection mold provided by the embodiment of the present disclosure;

Figure 5 is a schematic structural diagram of an outer core in an injection mold provided by an embodiment of the present disclosure.

The reference symbols are explained as follows:

1-Threaded core; 2-First bevel gear; 3-Second bevel gear; 4-Central gear; 5-Sub-gear; 6-Panel; 7-Upper cavity plate; 8-Lower cavity plate; 9- The first supporting plate; 10-the second supporting plate; 11-the third supporting plate; 12-the fourth supporting plate; 13-bottom plate; 14-upper cavity; 15-lower cavity; 16-outer core plate; 17 -Outer core; 18-first transmission shaft; 19-first spur gear; 20-second spur gear; 21-second transmission shaft; 22-mold foot; 23-ejector plate; 24-ejector pin; 25-limit bit part.

Detailed ways

The technical solution of the present disclosure will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this disclosure.

In the description of the present disclosure, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear, ", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation. Constructed and operated in a specific orientation and therefore should not be construed as limiting the disclosure. In addition, the terms “first,” “second,” and “third”, if used, are for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present disclosure, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a fixed connection. Detachable connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure can be understood on a case-by-case basis.

Referring to Figures 1 to 5, this embodiment provides an injection mold, including a transmission mechanism and a threaded core 1; the transmission mechanism includes a first bevel gear 2, a second bevel gear 3, a center gear 4 and a plurality of sub-gears. 5. The first bevel gear 2 is used for transmission connection with the hydraulic system of the injection molding machine. The second bevel gear 3 meshes with the first bevel gear 2. The center gear 4 and the second bevel gear 3 are coaxially arranged. A plurality of sub-gears 5 are arranged along the center. The gears 4 are arranged at circumferential intervals, and a plurality of sub-gears 5 are meshed with the central gear 4 respectively; the threaded cores 1 are connected to the sub-gears 5, the number of the threaded cores 1 is multiple, and the multiple threaded cores 1 are connected to the multiple sub-gears 5 corresponds one to one.

The injection mold provided in this embodiment uses the first bevel gear 2 and the second bevel gear 3 instead of chain transmission, which can reduce the number of transmission stages, reduce the structural complexity of the injection mold, and shorten the injection cycle; at the same time, by setting the center gear 4 , can drive multiple sub-gears 5 to rotate at the same height at the same time. Since the multiple thread cores 1 correspond to the multiple sub-gears 5 one-to-one, multiple thread cores 1 can be driven to rotate together at the same time, realizing the detachment of products with internal threads. mold.

In one embodiment, as shown in Figures 2 and 3, both the first bevel gear 2 and the second bevel gear 3 are straight bevel gears.

In one embodiment, as shown in Figure 1, the injection mold also includes a panel 6, an upper cavity plate 7, a lower cavity plate 8, a first supporting plate 9, a second supporting plate 10, and a panel 6 arranged from top to bottom. The three supporting plates 11, the fourth supporting plate 12 and the bottom plate 13; the bottom plate 13 and the panel 6 are used for fixed connection with the injection molding machine; the upper cavity plate 7 is installed with the upper cavity 14, and the lower cavity plate 8 is installed with the lower mold Cavity 15, the first supporting plate 9 is installed with the outer core plate 16, the outer core plate 16 is installed with the outer core 17, the center gear 4 and the sub-gear 5 are installed on the second supporting plate 10, and the threaded core 1 is installed on the fourth The supporting plate 12; the transmission mechanism also includes a first transmission shaft 18, which is passed through the second supporting plate 10, the third supporting plate 11 and the fourth supporting plate 12; the first bevel gear 2 and the second bevel gear 3 are installed between the fourth supporting plate 12 and the bottom plate 13.

In this embodiment, the upper cavity 14, the lower cavity 15, the outer core 17 and the thread core 1 together form a product cavity, which is used to form products with internal threads. It should be noted that for a product cavity, the installation position relationship between the upper cavity 14, the lower cavity 15, the outer core 17 and the threaded core 1 is an existing technology and will not be described again here.

When in use, the panel 6 and the bottom plate 13 are fixedly installed on the injection molding machine to realize the installation of the injection mold. Exemplarily, the injection mold also includes a nozzle, and a glue inlet is provided at the top of the panel 6 for feeding materials into the nozzle. The nozzle is connected with the product cavity and is used for feeding materials into the product cavity.

In this embodiment, the number of thread cores 1 is multiple. Therefore, the number of product cavities is also multiple. The number of nozzles can be multiple. The nozzles and product cavities can correspond one to one, so that multiple products can be produced at the same time. A product with internal threads to improve production efficiency.

For example, as shown in FIG. 4 , the number of sub-gears 5 is eight, and the eight sub-gears 5 are evenly spaced along the circumferential direction of the central gear 4 .

It should be noted that the panel 6 and the nozzle are both existing technologies, and their structures will not be described in detail.

As shown in Figure 2, the first transmission shaft 18 is passed through the second supporting plate 10, the third supporting plate 11 and the fourth supporting plate 12. One end of the first transmission shaft 18 is connected to the second bevel gear 3. The first transmission shaft 18 is connected to the second bevel gear 3. The other end of the shaft 18 is connected to the center gear 4. The second supporting plate 10 and the fourth supporting plate 12 are both provided with bearings for connecting with the first transmission shaft 18 to ensure that the first transmission shaft 18 can move relative to the second supporting plate 10 , the third supporting plate 11 and the fourth supporting plate 12 rotate around their own axes. The first bevel gear 2 and the second bevel gear 3 are both installed between the fourth supporting plate 12 and the bottom plate 13 .

In this embodiment, the third supporting plate 11 is provided with a bearing for connecting with the sub-gear 5 to ensure that the sub-gear 5 can rotate around its own axis relative to the third supporting plate 11 .

In one embodiment, as shown in Figure 1, the transmission mechanism also includes a first spur gear 19, a second spur gear 20 and a second transmission shaft 21. The first spur gear 19 is used for transmission connection with the hydraulic system of the injection molding machine. The second spur gear 20 meshes with the first spur gear 19 , and the second spur gear 20 is connected to the first bevel gear 2 through the second transmission shaft 21 .

When in use, the hydraulic system of the injection molding machine drives the first spur gear 19 to rotate, the first spur gear 19 drives the second spur gear 20 to rotate, and the second spur gear 20 drives the first bevel gear 2 to rotate through the second transmission shaft 21. A bevel gear 2 drives the central gear 4 to rotate through the first transmission shaft 18. The central gear 4 drives multiple sub-gears 5 to rotate. The multiple sub-gears 5 drive multiple thread cores 1 to rotate at the same time to realize demolding of products with internal threads.

In one embodiment, as shown in Figure 1, the injection mold also includes a mold foot 22 and an ejector plate 23. The mold foot 22 is installed between the fourth supporting plate 12 and the bottom plate 13, so that the fourth supporting plate 12 and the bottom plate 13 A space is formed for installing the first bevel gear 2, the second bevel gear 3 and the ejector plate 23; the ejector plate 23 is located above the bottom plate 13, and the ejector plate 23 is equipped with an ejector pin 24, and the ejector pin 24 is used to eject the injection molded product. .

By setting the mold feet 22, the mold can be laid flat and support the space required for the bevel gear fitting and the ejector plate and ejector pin. When the product is demoulded, the ejection pin 24 ejects the injection molded product from the product cavity.

In one embodiment, the outer core 17 is provided with a limiting portion 25, and the limiting portion 25 is used to limit the rotation of the injection molded product. For example, after injection molding, the injection molded product forms a limited fitting part, and the limiting part 25 cooperates with the limited fitting part, and when the threaded core 1 rotates, the injection molded product is restricted from rotating together with the threaded core 1 .

In one embodiment, as shown in FIG. 5 , the limiting portion 25 includes a plurality of protrusions, and the plurality of protrusions are spaced apart along the circumference of the outer core 17 .

For example, the outer core 17 has a tubular structure, the diameter of one end of the tubular structure is smaller than the diameter of the other end, and the protrusion is provided at the end with the smaller diameter. After the injection molding is completed, the injection molded product is formed with depressions that match the protrusions. The protrusions and depressions limit each other to prevent the injection molded product from rotating.

It should be noted that the limiting portion 25 can also be a depression, and accordingly, protrusions are formed on the injection molded product.

It should be noted that the injection mold has a panel 6, an upper cavity plate 7, a lower cavity plate 8, a first supporting plate 9, a second supporting plate 10, a third supporting plate 11, a fourth supporting plate 12 and a mold foot 22. The structure and linkage relationship between the ejector plate 23 and the bottom plate 13 as well as the working principle of the injection mold are all existing technologies and will not be described again here.

This embodiment also provides an injection molding system, including the injection mold provided in this embodiment.

The injection molding system provided in this embodiment, due to the use of the injection mold provided in this embodiment, can not only reduce the number of transmission stages and reduce the overall structural complexity of the injection molding system, but also can drive multiple threaded cores 1 to rotate together at the same time, realizing multiple The demoulding of products with internal threads shortens the injection molding cycle and improves production efficiency.

In one embodiment, the injection molding system also includes a hydraulic system, which is used to provide power to the transmission mechanism.

By using the hydraulic system that comes with the injection molding system for driving the twisting mechanism to provide power to the transmission mechanism, it can replace the traditional motor drive method, further simplifying the structure and reducing costs. Among them, the twisting mechanism is an existing technology, and its structure will not be described in detail.

In one embodiment, the injection molding system further includes a manipulator, which is used to clamp the material handle.

After injection molding, the material handle is separated from the injection molded product, and a robot is used to remove the material handle so that the injection mold can be reused for the next injection molding process, which improves production efficiency.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present disclosure, but not to limit it; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present disclosure. scope.

Claims (10)

1. An injection mold is characterized by comprising a transmission mechanism and a threaded mold core; the transmission mechanism comprises a first bevel gear, a second bevel gear, a central gear and a plurality of sub gears, wherein the first bevel gear is used for being in transmission connection with a hydraulic system of the injection molding machine, the second bevel gear is meshed with the first bevel gear, the central gear and the second bevel gear are coaxially arranged, the plurality of sub gears are arranged at intervals along the circumferential direction of the central gear, and the plurality of sub gears are respectively meshed with the central gear; the threaded cores are connected with the sub-gears, the threaded cores are multiple in number, and the threaded cores are in one-to-one correspondence with the sub-gears.

2. The injection mold of claim 1, further comprising a top-down positioned panel, an upper cavity plate, a lower cavity plate, a first pallet, a second pallet, a third pallet, a fourth pallet, and a bottom plate; the bottom plate and the panel are fixedly connected with the injection molding machine;

an upper cavity is arranged in the upper cavity plate, a lower cavity is arranged in the lower cavity plate, an outer core plate and an outer core are arranged on the first supporting plate, the sun gear and the sub-gear are arranged on the second supporting plate, and the threaded core is arranged on the fourth supporting plate;

the transmission mechanism further comprises a first transmission shaft, and the first transmission shaft penetrates through the second supporting plate, the third supporting plate and the fourth supporting plate;

the first bevel gear and the second bevel gear are both arranged between the fourth supporting plate and the bottom plate.

3. Injection mold according to claim 2, characterized in that the outer core is provided with a limit for limiting the rotation of the injection product.

4. The injection mold of claim 3, wherein the limit portion comprises a plurality of protrusions, the plurality of protrusions being disposed at intervals along a circumferential direction of the outer core.

5. The injection mold of claim 2, further comprising mold pins and an ejector plate, the mold pins being mounted between the fourth pallet and the bottom plate such that a space for mounting the first bevel gear, the second bevel gear, and the ejector plate is formed between the fourth pallet and the bottom plate;

the ejector plate is located above the bottom plate, an ejector pin is installed on the ejector plate, and the ejector pin is used for ejecting an injection molding product.

6. The injection mold of any of claims 1-5, wherein the drive mechanism further comprises a first spur gear for driving connection with a hydraulic system of an injection molding machine, a second spur gear engaged with the first spur gear, and a second drive shaft through which the second spur gear is connected with the first bevel gear.

7. The injection mold of any of claims 1-5, wherein the first bevel gear and the second bevel gear are both spur bevel gears.

8. An injection molding system comprising the injection mold of any one of claims 1 to 7.

9. The injection molding system of claim 8, further comprising a hydraulic system for providing power to the transmission.

10. The injection molding system of claim 8, further comprising a manipulator for gripping the take-off handle.