TWI823626B - An injection molding runner blocking mechanism, a mold and an injection molding method - Google Patents

Abstract

The present application relates to an injection molding runner blocking mechanism, a mold and an injection molding method, wherein the injection molding runner blocking mechanism includes: a first mother template, the first mother template has an injection space; a runner assembly, the runner assembly has a communication In the injection flow channel of the injection space, the flow channel component includes a blocking block; the driving component, the driving component is connected with the blocking block, and the blocking block has a blocking state for blocking the injection molding flow channel and a communication state for connecting the injection molding flow channel. The technical solution of the present application effectively solves the problem that the efficiency of the mold in the prior art decreases due to the lack of materials during injection molding.

Description

Injection molding flow channel blocking mechanism, mold and injection molding method

The present invention relates to the technical field of injection molding. Specifically, it relates to an injection molding flow channel blocking mechanism, a mold and an injection molding method.

Precision automatic drawing plastic molds have multi-process processes in the front stage. Each process will produce defective products, resulting in a lot of NG materials in the same tray of materials during automatic drawing injection molding. If there is 1 PCS NG material (one material or one hole material), the mold monitor is triggered, causing the machine to alarm and shut down. The operator needs to manually scrap the entire mold. If the mold has 8 holes and contains 1 PCS NG material, the other 7 PCS OK materials will also be pulled out and scrapped. This is equivalent to increasing the defective ratio by 8 times, resulting in excessive waste of materials and increased cost. At the same time, the machine is shut down and the operator operates manually, resulting in a decrease in efficiency.

The main purpose of the present invention is to provide an injection molding flow channel blocking mechanism, a mold and an injection molding method, so as to solve the problem of reduced efficiency of the mold in the prior art due to the vacancy of materials during injection molding.

In order to achieve the above purpose, the present invention provides an injection molding flow channel blocking mechanism, which includes a first mother template, a flow channel assembly and a driving assembly, wherein the first mother template has an injection molding space, and the flow channel assembly has an injection molding space connected to the injection molding space. Injection molding flow channel, the flow channel assembly further includes a blocking block, and the driving assembly is connected with the blocking block. The blocking block has a blocking state for blocking the injection molding flow channel and a connected state for connecting the injection molding flow channel.

During implementation, the flow channel assembly includes a flow channel plate and a flow channel cover plate. The flow channel plate is located on the side of the injection molding space away from the parts to be injected. The flow channel cover is located on the side of the flow channel plate away from the parts to be injected. The sealing The plug is movably arranged between the flow channel plate and the flow channel cover plate.

During implementation, the injection molding flow channel includes a first flow channel section that runs through the flow channel plate, a second flow channel section that runs through the blocking block, and a third flow channel section that runs through the flow channel cover. When the blocking block is in the blocking state, the third flow channel section The second flow channel section connects the first flow channel section and the third flow channel section.

During implementation, the flow channel plate includes a first plate section, a second plate section and a third plate section in the thickness direction. The first plate section is installed in the injection molding space, and the first plate section is away from the plane of the part to be injected and the first motherboard. The surfaces of the template are flush, the first flow channel section is located on the first plate section, the second plate section is arranged on the side of the first flow channel section away from the driving assembly, and the third plate section is located on the side of the second plate section away from the driving assembly. On the other side, the flow channel cover plate is disposed on the surface of the second plate section and located on one side of the driving assembly, and the blocking block is at least partially located between the first plate section and the flow channel cover plate.

When implemented, the blocking block includes an integrally formed plate body and a connecting block. The connecting block is connected to the driving assembly. The second flow channel section is located on the plate body. The connecting block is higher than the plate body on the side away from the flow channel plate. The blocking block When in the blocking state, the connecting block fits the flow channel cover plate.

During implementation, the injection molding flow channel blocking mechanism further includes a second mother template, which is located on a side of the flow channel component away from the first mother template.

During implementation, there are multiple injection molding spaces, and there are multiple driving assemblies and flow channel assemblies that correspond to the injection molding spaces one-to-one.

During implementation, the injection molding flow channel blocking mechanism also includes an injection molding pipe. The injection molding pipe includes an inlet and a plurality of outlets. The inlet is arranged on a side of the second mother template away from the first mother template. The multiple outlets correspond to the flow channel components one-to-one. place setting.

When implemented, the driving assembly includes a cylinder structure and a connecting rod. The first end of the connecting rod is connected to the cylinder structure, and the second end of the connecting rod is connected to the blocking block.

According to another aspect of the present invention, a mold is also provided. The mold includes an injection molding flow channel blocking mechanism, and the injection molding flow channel blocking mechanism is the above-mentioned injection molding flow channel blocking mechanism.

According to another aspect of the present invention, an injection molding method is also provided. The injection molding method uses the above-mentioned mold. The injection molding method includes detecting the part to be injected. If the part to be injected is in a normal position, injection molding is performed. If the part to be injected is not detected, , the driving assembly drives the blocking block to be in the blocking state for injection molding.

In order to further understand the present invention, the following is a preferred embodiment, and together with the drawings and figure numbers, the specific structure and content of the present invention and the effects achieved are described in detail as follows.

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

For ease of description, spatially relative terms may be used here, such as "on", "above", "on the upper surface of", "above", etc., to describe an object as shown in the figure. The spatial positional relationship of a device or feature to other devices or features. 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 feature in the figure is turned upside down, then one feature described as "above" or "on top of" other features or features would then be oriented "below" or "below" the other features or features. under other devices or structures". Thus, the exemplary term "above" may include both orientations "above" and "below." The device may be otherwise oriented, rotated 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.

As shown in FIGS. 1 to 7 , the injection molding flow channel blocking mechanism of this embodiment includes a first mother template 10 , a flow channel assembly 20 , and a driving assembly 30 . The first master template 10 has an injection molding space, and the flow channel assembly 20 has an injection molding flow channel connected to the injection molding space. The flow channel assembly 20 includes a blocking block 21, the driving assembly 30 is connected to the blocking block 21, and the blocking block 21 has a blocking injection molding function. The blocked state of the flow channel and the connected state of the injection molding flow channel.

Applying the technical solution of this embodiment, the parts to be injected are placed in the injection space, and the parts to be injected in the injection space are detected. When it is detected that the parts to be injected are located in the injection space and the injection conditions are met, the injection molding of the runner assembly 20 The flow channel is connected and injection molding is performed. When it is detected that the injection molding conditions are not met in the injection molding space, such as detecting the parts to be injected in the injection molding space, the injection molding flow channel is in a blocked state. This avoids downtime caused by the parts to be injected not being in the intended position. The technical solution of this embodiment effectively solves the problem in the prior art that the efficiency of the mold is reduced due to the vacancy of materials during injection molding. The arrangement of the blocking block 21 also reduces the waste of materials.

It should be noted that the injection molding flow channel blocking mechanism also includes a detection component. The detection component includes a detector, which is arranged corresponding to the injection molding space and is used to detect whether the part to be injected is located in the injection molding space. The detection component is mainly composed of four parts: a controller, an electronic valve, a fiber optic amplifier and an induction fiber (detector). Its main function is to use multiple sets of induction optical fibers to set the sensing range value of the incoming material through the principle of light reflection. The induction fiber is based on the induction value to determine whether it is NG material (because the previous work station has AOI full inspection, the NG material has been cut. This section only needs to sense the presence or absence of the material. Sensing the presence of material means OK, sensing no material means NG). The sensing optical fiber automatically senses that there is NG material in the front-end material, records the position of the NG material, and receives the signal through the optical fiber amplifier and sends it back to the controller. When the cavity enters the mold cavity, the controller sends a signal to the electronic valve to provide information for the cylinder structure movement. signal. The main function of the driving assembly 30 is to push the blocking block 21 to block the injection flow channel and prevent the plastic from flowing into the mold cavity (injection space). The injection flow channel blocking mechanism of this embodiment does not occupy the mold layout, requires small space, has a simple structure and is reliable in action.

As shown in Figures 2, 3 and 4, in the technical solution of this embodiment, the flow channel assembly 20 includes a flow channel plate 22 and a flow channel cover plate 23. The flow channel plate 22 is located in the injection molding space away from the part to be injected. On one side, the flow channel cover plate 23 is disposed on the side of the flow channel plate 22 away from the part to be injected, and the blocking block 21 is movably disposed between the flow channel plate 22 and the flow channel cover plate 23 . The above structure is compact and easy to operate. By moving the blocking block 21 between the flow channel plate 22 and the flow channel cover plate 23, the injection molding flow channel can be connected and blocked. When the detection component detects that the part to be injected is not located at the predetermined position, the blocking block 21 performs blocking.

As shown in Figures 2 and 3, in the technical solution of this embodiment, the injection flow channel includes a first flow channel section 221 that runs through the flow channel plate 22, a second flow channel section 211 that runs through the blocking block 21, and a through flow channel. In the third flow channel section 231 of the cover plate 23, when the blocking block 21 is in the blocking state, the second flow channel section 211 communicates with the first flow channel section 221 and the third flow channel section 231. The above structure has low processing cost and is easy to operate. Blocking can be achieved by staggering the second flow channel section 211, the first flow channel section 221, and the third flow channel section 231. It should be noted that in the technical solution of this embodiment, the inner diameter of the injection molding flow channel decreases in the direction from the first flow channel section 221 to the third flow channel section 231. The central axis of the first flow channel section 221, the second flow channel The central axis of the section 211 and the central axis of the third flow channel section 231 are located on the same axis.

As shown in Figure 4, in the technical solution of this embodiment, the flow channel plate 22 includes a first plate section, a second plate section and a third plate section in the thickness direction. The first plate section is installed in the injection molding space, and the third plate section is installed in the injection molding space. A plane of a plate section away from the part to be injected is flush with the surface of the first master template 10 , the first flow channel section 221 is located on the first plate section, and the second plate section is disposed on a side of the first flow channel section 221 away from the driving assembly 30 side, the third plate section is located on the side of the second plate section away from the driving assembly 30, the flow channel cover 23 is provided on the surface of the second plate section and is located on one side of the driving assembly 30, and the blocking block 21 is at least partially located on between the first plate section and the flow channel cover 23. The above-mentioned structural support effect is good, the movement of the blocking block 21 is relatively stable, and the sealing effect between the blocking block 21 and the flow channel plate 22 and the flow channel cover plate 23 is good. The blocking block 21, the flow channel plate 22 and the flow channel cover plate 23 are processed with high precision, and sealing can be achieved through the plane cooperation of the above three. A sliding groove is provided on the surface of the side of the first plate section facing the blocking block 21. The height from the sliding groove to the surface of the second plate section is the same as the thickness of the plate body, which is beneficial to achieving sealing and matching accuracy.

As shown in Figures 2 and 3, in the technical solution of this embodiment, the blocking block 21 includes an integrated The formed plate body and connecting block are connected to the driving assembly 30. The second flow channel section 211 is located on the plate body. The connecting block is higher than the plate body on the side away from the flow channel plate 22. The blocking block 21 is in the blocking state. When, the connecting block and the flow channel cover plate 23 fit together. The above-mentioned structure of the blocking block 21 can not only achieve connection with the connecting rod 32, but also limit the movement of the blocking block 21. The connecting rod 32 is detachably connected to the connecting block. Specifically, the upper surface of the connecting block has a groove. The side of the groove away from the cylinder structure 31 has a mounting hole. The first end of the connecting rod and the second end of the connecting rod There is a necking between them, and the second end of the connecting rod is located in the mounting hole. It should be noted that when the blocking block 21 is in the blocking state, the plate body and the side of the second plate section close to the driving assembly 30 are combined to form a limiter. When the blocking block 21 is in the connected state, the connecting block and the flow channel cover The gap between the plates 23 is 3mm, so the moving distance of the blocking block 21 is 3mm. The fluid channel has a frustum-shaped structure, and its diameter decreases from the direction away from the part to be injected to the direction close to the part to be injected.

As shown in FIG. 1 , in the technical solution of this embodiment, the injection molding flow channel blocking mechanism further includes a second mother template 40 , which is located on a side of the flow channel assembly 20 away from the first mother template 10 . On the one hand, the arrangement of the second master template 40 effectively protects the runner assembly 20, the driving assembly 30, the injection molding pipe 50, etc., so that the runner assembly 20, the driving assembly 30, and the injection molding pipe 50 are not easily damaged and dislocated. The surface of the third plate section away from the second plate section is flush with the surface of the flow channel cover 23 away from the second plate section.

As shown in FIGS. 2 and 3 , in the technical solution of this embodiment, there are multiple injection molding spaces, and there are multiple drive assemblies 30 and flow channel assemblies 20 corresponding to the injection molding spaces one by one. The above structure improves injection molding efficiency. Specifically, in the technical solution of this embodiment, there are eight injection molding spaces, and the driving assembly 30 and the flow channel assembly 20 are also correspondingly eight.

As shown in Figures 2 and 3, in the technical solution of this embodiment, the injection flow channel blocking mechanism also includes an injection pipe 50. The injection pipe 50 includes an inlet and a plurality of outlets, and the inlet is disposed far away from the second mother template 40. On one side of the first mother template 10, a plurality of outlets are arranged in one-to-one correspondence with the flow channel assembly 20. The arrangement of the injection molding pipe 50 reduces the processing cost, so that there is no need to provide an injection molding channel on the second master template. It should be noted that multiple outlets are set up in parallel, which ensures uniform pressure at each outlet and less influence on each other.

As shown in Figures 2 and 3, in the technical solution of this embodiment, the driving assembly 30 includes a cylinder structure 31 and a connecting rod 32. The first end of the connecting rod 32 is connected to the cylinder structure 31, and the second end of the connecting rod 32 Connected to the blocking block 21. The above structure has low processing cost and is easy to operate.

The invention also provides a mold, which includes an injection molding flow channel blocking mechanism, and the injection molding flow channel blocking mechanism is the above-mentioned injection molding flow channel blocking mechanism.

The invention also provides an injection molding method. The injection molding method adopts the above-mentioned mold. The injection molding method is to detect the parts to be injected by the detection component. If the parts to be injected are in the normal position, injection molding is performed. If the parts to be injected are not detected, the driving assembly 30 drives the seal. The blocking block 21 is in a blocking state and injection molding is performed. The above injection molding method can improve injection molding efficiency. It should be noted that when the injection molding is multi-point, one or more points are blocked, and the rest that meet the injection molding requirements can be injected normally. The materials of the parts to be injection molded in the present invention can be plastic materials, metal materials, mixtures of metal materials and plastic materials, and plastic materials. The above materials of the parts to be injection molded are only listed and not exhaustive.

Therefore, the technical solution of the present invention has the following advantages: 1. Through the technical solution of the present invention, the parts to be injected are placed in the injection space, and the parts to be injected in the injection space are detected. When it is detected that the parts to be injected are located in the injection space and the injection conditions are met, the injection molding of the runner assembly The flow channel is connected and injection molding is performed. When it is detected that the injection molding conditions are not met in the injection molding space, such as detecting the parts to be injected in the injection molding space, the injection molding flow channel is in a blocked state. This avoids downtime caused by the parts to be injected not being in the intended position. 2. The technical solution of the present invention effectively solves the problem of the mold in the prior art due to the empty material during injection molding. The problem of reduced efficiency caused by the shortage.

It should be noted that the terms used herein are for the purpose of describing specific embodiments only, and are not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular forms are also intended to include the plural forms unless the context clearly indicates otherwise. Furthermore, it will be understood that when the terms "comprises" and/or "includes" are used in this specification, they indicate There are features, steps, operations, means, components and/or combinations thereof.

It should be noted that the terms "first", "second", etc. in the description and patent scope of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that the materials so used are interchangeable under appropriate circumstances so that the embodiments of the invention described herein can, for example, be practiced in sequences other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus that encompasses a series of steps or units and need not be limited to those explicitly listed. Those steps or elements may instead include other steps or elements not expressly listed or inherent to the process, method, product or apparatus.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

In summary, based on the content disclosed above, the present invention can clearly achieve the intended purpose of the invention and provide an injection molding flow channel blocking mechanism, a mold and an injection molding method, which are of great practicality and industrial utilization value, and can be used in accordance with the law. File an invention patent application.

10: First master template

20:Runner components

21: Blocking block

211: Second flow channel section

22:Flower plate

221: First flow channel section

23:Flow channel cover

231: The third flow channel section

30:Drive components

31: Cylinder structure

32:Connecting rod

40: Second master template

50: Injection molding pipe

Figure 1 is a schematic three-dimensional structural diagram of an injection flow channel blocking mechanism according to an embodiment of the present invention; Figure 2 is a schematic diagram of the internal structure of the injection flow channel blocking mechanism of Figure 1; Fig. 3 is a schematic three-dimensional structural diagram of the injection flow channel of the injection flow channel blocking mechanism in Fig. 1 and the parts to be injected; Figure 4 is a schematic cross-sectional view of the injection flow channel blocking mechanism of Figure 1 in a connected state; Figure 5 is a partially enlarged schematic diagram of the injection flow channel blocking mechanism of Figure 4; Figure 6 is a schematic cross-sectional view of the injection molding flow channel blocking mechanism in Figure 1 when it is in a blocking state; FIG. 7 is a partially enlarged schematic view of the injection molding flow channel blocking mechanism of FIG. 6 .

221: First flow channel section

231: The third flow channel section

30:Drive components

50: Injection molding pipe

Claims (9)

An injection molding flow channel blocking mechanism includes: a first mother template having an injection molding space; a channel assembly having an injection molding flow channel connected to the injection molding space, the flow channel assembly including a sealing Blocking block; and a driving assembly, the driving assembly is connected to the blocking block, the blocking block has a blocking state of blocking the injection molding flow channel and a connecting state of connecting the injection molding flow channel; wherein the flow channel assembly includes a flow channel The flow channel plate and the flow channel cover plate are located on the side of the injection molding space away from the part to be injected. The flow channel cover plate is arranged on the side of the flow channel plate away from the part to be injected. The blocking block Movably disposed between the flow channel plate and the flow channel cover plate; wherein the injection molding flow channel includes a first flow channel section that runs through the flow channel plate, a second flow channel section that runs through the blocking block, and a second flow channel section that runs through the flow channel. The third flow channel section of the cover plate, when the blocking block is in the blocking state, the second flow channel section connects the first flow channel section and the third flow channel section; through the second flow channel section and the first flow channel section Blocking can be achieved by staggering the channel section and the third flow channel section. The injection molding flow channel blocking mechanism according to claim 1, wherein the flow channel plate includes a first plate section, a second plate section and a third plate section in the thickness direction, and the first plate section is installed in the injection molding space. , the plane of the first plate section away from the part to be injected is flush with the surface of the first master template, the first flow channel section is located on the first plate section, and the second plate section is disposed on the first flow channel section The third plate section is located on the side of the second plate section away from the driving assembly, and the flow channel cover is disposed on the surface of the second plate section and located on one side of the driving assembly. , the blocking block is at least partially located between the first plate section and the flow channel cover plate. The injection molding flow channel blocking mechanism according to claim 1, wherein the blocking block includes an integrally formed plate body and a connecting block, the connecting block is connected to the driving component, and the second flow channel section is located on the plate body, in The connecting block on the side away from the flow channel plate is higher than the plate body. When the blocking block is in the blocking state, the connecting block fits the flow channel cover plate. The injection molding flow channel blocking mechanism as claimed in claim 1, wherein the injection molding flow channel blocking mechanism further includes a second mother template, which is located on a side of the flow channel assembly away from the first mother template. The injection molding flow channel blocking mechanism as described in claim 4, wherein there are multiple injection molding spaces, and the driving components and the flow channel components are multiple in one-to-one correspondence with the injection molding spaces. The injection molding flow channel blocking mechanism as described in claim 5, wherein the injection molding flow channel blocking mechanism further includes an injection molding pipe, the injection molding pipe includes an inlet and a plurality of outlets, and the inlet is disposed away from the second mother template. On one side of a mother template, the plurality of outlets are arranged in one-to-one correspondence with the flow channel assembly. The injection molding flow channel blocking mechanism according to claim 1, wherein the driving component includes a cylinder structure and a connecting rod, the first end of the connecting rod is connected to the cylinder structure, and the second end of the connecting rod is connected to the blocking block connected. A mold, characterized in that: the mold includes an injection molding flow channel blocking mechanism, and the injection molding flow channel blocking mechanism is the injection molding flow channel blocking mechanism described in any one of the above claims 1 to 7. An injection molding method, characterized in that: the injection molding method uses the mold described in claim 8, wherein the injection molding method includes the following steps: detect the part to be injected; if the part to be injected is in a normal position, perform injection molding; if the part to be injected is not detected, Injection molded parts, the driving assembly drives the blocking block to be in a blocking state; Perform injection molding.