A glue injection structure and an injection mold

Abstract

The application provides a glue injection structure and an injection mold. The glue injection structure comprises a glue inlet channel, a first glue outlet channel and a second glue outlet channel. The glue inlet channel is provided with a first communication position and a second communication position. The first glue outlet channel is in communication with the glue inlet channel at the first communication position. The second glue outlet channel is in communication with the glue inlet channel at the second communication position. The glue inlet channel is defined to form a symmetry reference. The first communication position and the second communication position are symmetrically arranged relative to the symmetry reference, so that the first glue outlet channel and the second glue outlet channel respectively inject glue on opposite sides of a product to be molded. On the one hand, the product to be molded can avoid deformation, tilting, collapse and other phenomena caused by the injection pressure of glue during the injection molding process, thereby preventing the product to be molded from failing to be molded. On the other hand, the glue injection structure can prevent the problems of cost increase and precision reduction caused by avoiding deformation, tilting, collapse and other phenomena.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a glue injection structure and injection mold. Background Technology

[0002] With the development of materials and manufacturing processes, plastic products have been widely used in various fields such as medical, aerospace and agricultural production. This not only meets the needs of industry development, but also promotes the maturity and development of plastic mold technology. Plastic products are mainly manufactured by injection molding through plastic molds. This molding method has the advantages of high manufacturing efficiency and strong reproducibility. For example, in IVD instruments, disposable CRP reaction tanks occupy a very important position in the field of medical devices.

[0003] In the injection molding process, molten plastic material is injected into the mold core through the mold runner, thus completing the injection molding in the mold core. However, when the plastic material is injected from the runner into the mold core, injection pressure is generated, which causes the molded CRP reaction tank to deform, tilt, collapse, etc. under the action of this pressure, resulting in product molding failure. Utility Model Content

[0004] This application mainly provides an injection structure and injection mold, which can prevent the product to be injection molded from deforming, tilting, collapsing or other phenomena caused by the injection pressure generated by the glue during the injection molding process, thereby preventing the product from failing to be injection molded.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide a glue injection structure, the glue injection structure including a glue inlet channel, a first glue outlet channel and a second glue outlet channel, the glue inlet channel having a first connecting position and a second connecting position, the first glue outlet channel communicating with the glue inlet channel at the first connecting position, the second glue outlet channel communicating with the glue inlet channel at the second connecting position, the glue inlet channel being defined by a symmetry reference, the first connecting position and the second connecting position being symmetrically arranged with respect to the symmetry reference, so that the first glue outlet channel and the second glue outlet channel respectively dispense glue from opposite sides of the product to be injection molded.

[0006] In one specific embodiment, the glue inlet channel is further provided with glue inlet positions, and the glue inlet positions are respectively the same as the channel distances between the first connecting position and the second connecting position.

[0007] In one specific embodiment, the glue inlet channel includes a glue injection channel and a buffer channel. The buffer channel has the glue inlet position, the first connecting position and the second connecting position. The glue injection channel is connected to the buffer channel at the glue inlet position.

[0008] In one specific embodiment, the buffer channel is arranged in a ring shape, and the first connecting position and the second connecting position are arranged axially symmetrically with respect to the central axis corresponding to the center of the buffer channel.

[0009] In one specific embodiment, the buffer channel is arranged in a circular shape.

[0010] In one specific embodiment, the buffer channel has a trapezoidal cross-section in the circumferential direction.

[0011] In one specific embodiment, the first dispensing channel and the second dispensing channel are respectively inclined relative to the central axis in the extension direction away from the buffer channel.

[0012] In one specific embodiment, the cross-sectional area of ​​both the first and second dispensing channels gradually decreases in the direction of extension away from the buffer channel.

[0013] In one specific embodiment, the first connecting position and the second connecting position are located on the same side of the buffer channel, and the glue inlet position is located on the side of the buffer channel away from the first connecting position and the second connecting position.

[0014] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide an injection mold, wherein the injection mold includes the aforementioned injection structure.

[0015] The beneficial effects of this application are as follows: Unlike existing technologies, the glue injection structure provided in this application includes an inlet channel, a first outlet channel, and a second outlet channel. The inlet channel has a first connecting position and a second connecting position. The first outlet channel communicates with the inlet channel at the first connecting position, and the second outlet channel communicates with the inlet channel at the second connecting position. The inlet channel is defined by a symmetrical reference, and the first connecting position and the second connecting position are symmetrically arranged relative to the symmetrical reference, so that the first outlet channel and the second outlet channel are respectively located at... The glue exits from opposite sides of the product to be injection molded. On the one hand, since the glue exits from the first and second glue exit channels are on opposite sides of the product, the injection pressure generated by the glue during the first and second glue exit processes can cancel each other out. This prevents the product from deforming, tilting, or collapsing due to the injection pressure generated by the glue during the injection molding process, thus avoiding molding failure. On the other hand, it can prevent the increase in cost and reduction in precision caused by avoiding deformation, tilting, and collapse. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the glue injection structure embodiment provided in this application; Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the injection molded product after injection molding; Figure 3 yes Figure 1 A schematic diagram of the cross-section of the injection molding structure in the FF direction; Figure 4 yes Figure 1 A top view of the injection molding structure. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0019] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indication will change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. A process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0020] In this document, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0021] Please refer to the following: Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a three-dimensional structural diagram of the 10th embodiment of the glue injection structure provided in this application. Figure 2 yes Figure 1 The injection molding structure 10 is a three-dimensional structural diagram of the injection-molded product after injection molding. Figure 3 yes Figure 1 A cross-sectional view of the injection structure 10 in the FF direction. The sample counting module 10 in this embodiment includes an injection channel 11, a first injection channel 12 and a second injection channel 13.

[0022] The inlet channel 11 is provided with a first connecting position A1 and a second connecting position A2. The first outlet channel 12 is connected to the inlet channel 11 at the first connecting position A1, and the second outlet channel 13 is connected to the inlet channel 11 at the second connecting position A2, so that the rubber material required for the injection molding process of the product to be injection molded 110 is first injected into the inlet channel 11, and then discharged through the first outlet channel 12 and the second outlet channel 13 respectively.

[0023] Optionally, the glue inlet channel 11 includes a glue injection channel 111 and a buffer channel 112. The glue injection channel 111 and the buffer channel 112 are connected. The buffer channel 112 is provided with the first connection position A1 and the second connection position A2 mentioned above. That is, in this embodiment, the glue is first injected into the glue injection channel 111, and then flows through the buffer channel 112 to the first glue outlet channel 12 and the second glue outlet channel 13 respectively. Finally, the glue is discharged from the first glue outlet channel 12 and the second glue outlet channel 13 respectively.

[0024] Furthermore, the injection channel 11 is defined with a symmetrical reference. The first connecting position A1 and the second connecting position A2 are symmetrically arranged with respect to the symmetrical reference, so that the first ejection channel 12 and the second ejection channel 13 eject glue on opposite sides of the product to be injection molded 110. On the one hand, since the ejection of the first ejection channel 12 and the ejection of the second ejection channel 13 are on opposite sides of the product to be injection molded 110, the injection pressure generated by the glue during the ejection of the first ejection channel 12 and the injection pressure generated by the glue during the ejection of the second ejection channel 13 can cancel each other out. This avoids deformation, tilting, collapse and other phenomena caused by the injection pressure generated by the glue during the injection molding process, which would lead to the failure of the injection molding of the product. On the other hand, it can prevent the problem of increased costs caused by avoiding deformation, tilting, collapse and other phenomena.

[0025] For example, if glue is only dispensed from one side of the product to be injection molded, that is, only from the first dispensing channel 12 or the second dispensing channel 13, then that side of the product will be subjected to the injection pressure generated by the glue, causing the product to deform, tilt, or collapse under this pressure. In this embodiment, glue can be dispensed from both opposite sides of the product, so the injection pressures on the opposite sides cancel each other out, thus preventing deformation, tilting, or collapse. Alternatively, to avoid deformation, tilting, or collapse caused by glue dispensing from only one side, the injection thickness of the product could be increased, as increased thickness improves its compressive strength. However, this method not only increases the amount of glue used, leading to higher costs, but may also fail to meet the precision requirements of the product due to the increased injection thickness. Therefore, the arrangement in this embodiment also prevents the problems of increased costs and reduced precision caused by avoiding deformation, tilting, or collapse.

[0026] Optionally, in this embodiment, the buffer channel 112 is arranged in a ring shape. The aforementioned symmetry reference is the central axis I corresponding to the center of the ring of the buffer channel 112. Therefore, in this embodiment, the first connecting position A1 and the second connecting position A2 are arranged axially symmetrically with respect to the central axis I.

[0027] Optionally, the buffer channel 112 is arranged in a circular shape. It is understood that in other ways, the buffer channel 112 may also be arranged in a square shape, and there is no limitation on this.

[0028] Optionally, the buffer channel 112 has a trapezoidal cross-section in the circumferential direction, which can provide a stable injection flow rate during the injection molding process.

[0029] It is understandable that the number of first dispensing channels 12 and second dispensing channels 13 can each be multiple, that is, the number of first connecting positions A1 and second connecting positions A2 can each be multiple. For example, if there are two first connecting positions A1 and two first dispensing channels 12, then the corresponding number of second connecting positions A2 and two second dispensing channels 13 can also each be two. One of the two first connecting positions A1 and one of the two second connecting positions A2 are symmetrically set with respect to a symmetry reference, and the other of the two first connecting positions A1 and the other of the two second connecting positions A2 are symmetrically set with respect to a symmetry reference. Or, for example, if there are three first connecting positions A1 and three first dispensing channels 12, then the corresponding number of second connecting positions A2 and three second dispensing channels 13 can also each be three. One of the three first connecting positions A1 and one of the three second connecting positions A2 are symmetrically set with respect to a symmetry reference, the other of the three first connecting positions A1 and the other of the three second connecting positions A2 are symmetrically set with respect to a symmetry reference, and so on.

[0030] Please refer to the following: Figure 3 and Figure 4 , Figure 4 yes Figure 1 A top view of the injection structure 10 shows that the injection channel 11 also has an injection position A3. In this embodiment, that is, the buffer channel 112 has an injection position A3. The injection channel 111 is connected to the buffer channel 112 at the injection position A3. The injection position A3 is equidistant from the first connecting position A1 and the second connecting position A2, respectively. Figure 4 As shown, the flow channel distance between the glue inlet position A3 and the first connecting position A1 is L1, and the flow channel distance between the glue inlet position A3 and the second connecting position A2 is L2, where L1=L2. With this configuration, when the glue is injected into the glue inlet channel 11, it can flow to the first glue outlet channel 12 and the second glue outlet channel 13 simultaneously, so that the glue can be discharged from the first glue outlet channel 12 and the second glue outlet channel 13 at the same time. This allows the first glue outlet channel 12 and the second glue outlet channel 13 to generate injection pressure at the same time during the glue discharge process, avoiding the situation where the injection pressure cannot be canceled due to the injection pressure being generated first.

[0031] The first connecting position A1 and the second connecting position A2 are located on the same side of the buffer channel 112, for example... Figure 3 On the lower side of the buffer channel 112, the glue inlet position A3 is located on the side of the buffer channel 112 away from the first connecting position A1 and the second connecting position A2, for example... Figure 3 The upper side of the buffer channel 112.

[0032] Furthermore, such as Figure 3 As shown, in this embodiment, the first dispensing channel 12 and the second dispensing channel 13 are respectively inclined relative to the central axis I in the extension direction away from the buffer channel 112. With this arrangement, the inclined surface in the injection molded product can be injection molded.

[0033] Optionally, the cross-sectional area of ​​the first dispensing channel 12 and the second dispensing channel 13 gradually decreases in the direction of extension away from the buffer channel 112.

[0034] Further reading Figure 2 After the injection molding of the product 110 is completed, since the unused glue will still be retained in the injection structure 10, after demolding, a runner product 120 with the same structure as the injection structure 10 will be formed on the product 110. In practical applications, it is only necessary to cut the runner product 120 off the product 110.

[0035] This application also provides an injection mold, which includes the injection structure 10 described in the above embodiments.

[0036] The beneficial effects of this application are as follows: Unlike existing technologies, the glue injection structure provided in this application includes an inlet channel, a first outlet channel, and a second outlet channel. The inlet channel has a first connecting position and a second connecting position. The first outlet channel communicates with the inlet channel at the first connecting position, and the second outlet channel communicates with the inlet channel at the second connecting position. The inlet channel is defined by a symmetrical reference, and the first connecting position and the second connecting position are symmetrically arranged relative to the symmetrical reference, so that the first outlet channel and the second outlet channel are respectively located at... The glue exits from opposite sides of the product to be injection molded. On the one hand, since the glue exits from the first and second glue exit channels are on opposite sides of the product, the injection pressure generated by the glue during the first and second glue exit processes can cancel each other out. This prevents the product from deforming, tilting, or collapsing due to the injection pressure generated by the glue during the injection molding process, thus avoiding molding failure. On the other hand, it can prevent the increase in cost and reduction in precision caused by avoiding deformation, tilting, and collapse.

[0037] The above description is only a partial embodiment of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A glue-injection structure, characterized in that, The injection structure includes an inlet channel, a first outlet channel, and a second outlet channel. The inlet channel has a first connecting position and a second connecting position. The first outlet channel is connected to the inlet channel at the first connecting position, and the second outlet channel is connected to the inlet channel at the second connecting position. The inlet channel is defined by a symmetry reference. The first connecting position and the second connecting position are symmetrically arranged with respect to the symmetry reference, so that the first outlet channel and the second outlet channel respectively dispense glue from opposite sides of the product to be injection molded.

2. The injection structure according to claim 1, characterized in that, The glue inlet channel is also provided with glue inlet positions, and the glue inlet positions are the same distance from the channel between the first connecting position and the second connecting position.

3. The injection structure according to claim 2, characterized in that, The glue inlet channel includes a glue injection channel and a buffer channel. The buffer channel has a glue inlet position, a first connecting position and a second connecting position. The glue injection channel is connected to the buffer channel at the glue inlet position.

4. The injection structure according to claim 3, characterized in that, The buffer channel is arranged in a ring shape, and the first connecting position and the second connecting position are axially symmetrical about the central axis corresponding to the center of the buffer channel.

5. The injection structure according to claim 3, characterized in that, The buffer channel is arranged in a circular shape.

6. The injection structure according to claim 4, characterized in that, The buffer channel has a trapezoidal cross-section in the circumferential direction.

7. The injection structure according to claim 4, characterized in that, The first dispensing channel and the second dispensing channel are respectively inclined relative to the central axis in the extension direction away from the buffer channel.

8. The injection structure according to claim 7, characterized in that, The cross-sectional area of ​​both the first and second dispensing channels gradually decreases in the direction of extension away from the buffer channel.

9. The injection structure according to claim 3, characterized in that, The first connecting position and the second connecting position are located on the same side of the buffer channel, and the glue inlet position is located on the side of the buffer channel away from the first connecting position and the second connecting position.

10. An injection mold, characterized in that, The injection mold includes the injection structure as described in any one of claims 1 to 9.

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