Mold structure for common mold production of multi-cavity special-shaped size decoration strip products

Abstract

The utility model discloses a mold structure for common mold production of a multi-cavity special-shaped size decoration strip product, and relates to the technical field of common mold production equipment structures, the mold structure comprises a first jig and a second jig, the first jig and the second jig form a first mold cavity, a second mold cavity, a third mold cavity, a first runner and a second runner after mold closing, one end of the first runner is communicated with one end of the first cavity, the other end of the first runner is communicated with the second cavity, one end of the second runner is connected with the other end of the first cavity, and the other end of the second runner is communicated with the third cavity; the two ends of the first flow channel and the two ends of the second flow channel are each provided with an adjusting valve used for adjusting the flow. According to the mold structure for common mold production of the multi-cavity special-shaped-size decoration strip products, the structure used for injection molding is optimized, so that products of different specifications can be produced on the same mold at the same time, and glue overflowing is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of common mold production equipment structures, and in particular to a mold structure for common mold production of multi-cavity, special-shaped, and sized decorative strip products. Background Art

[0002] Injection molds are mainly used for the integrated molding of plastic products. Currently, in order to produce multiple types of products in one mold, multiple cavities for product injection molding are set up in the mold. Each cavity is connected to a flow channel for delivering glue. To control the injection of glue in the cavity, a shut-off valve is set on the flow channel. When the corresponding product needs to be produced, the cavity and flow channel of the corresponding product are connected, thereby enabling the production of multiple products in the same mold. However, due to unreasonable design, it is not possible to perform injection molding of multiple products at the same time. Although some molds can produce multiple types or specifications of products, they are prone to glue overflow under high-pressure injection. Since the pressure cannot be effectively maintained, defects in the molded products are likely to occur. Utility Model Content

[0003] This application aims to solve one of the above-mentioned technical problems in the prior art. To this end, the embodiment of the application provides a mold structure for the co-molding production of multi-cavity, special-shaped decorative strip products, which optimizes the mold structure for injection molding, allowing products of different specifications to be produced simultaneously on the same mold without glue overflow.

[0004] According to an embodiment of the present application, a mold structure for the co-molding production of multi-cavity, special-shaped decorative strip products is provided, including a first jig and a second jig. After the first jig and the second jig are molded together, a first cavity, a second cavity, a third cavity, a first runner and a second runner are formed. One end of the first runner is connected to one end of the first cavity, and the other end of the first runner is connected to the second cavity. One end of the second runner is connected to the other end of the first cavity, and the other end of the second runner is connected to the third cavity. Both ends of the first runner and both ends of the second runner are provided with regulating valves for adjusting the flow rate.

[0005] According to the mold structure for co-molding multi-cavity special-sized decorative strip products described in an embodiment of the present application, the first runner and the second runner both include a first section and a second section, the first section is connected to the first cavity, the second section is connected to the second cavity or the third cavity, and the width of the second section is smaller than the width of the first section.

[0006] According to the mold structure for co-molding the multi-cavity special-sized trim products described in the embodiment of the present application, the width of the first section is 10 mm, and the width of the second section is 7 mm.

[0007] According to the mold structure for co-molding multi-cavity special-sized trim products described in an embodiment of the present application, the second section is connected to the middle of the second cavity or the middle of the third cavity.

[0008] According to the mold structure for co-molding multi-cavity special-sized trim products described in an embodiment of the present application, the regulating valve is threadedly connected to the first flow channel or the second flow channel.

[0009] According to the mold structure for co-molding multi-cavity special-sized trim products described in an embodiment of the present application, the regulating valve includes a stud portion, and the first flow channel and the second flow channel are both provided with screw holes adapted to the stud portion.

[0010] According to the mold structure for co-molding multi-cavity special-sized trim products described in an embodiment of the present application, the regulating valve includes an adjusting part, and the first flow channel and the second flow channel are both provided with adjusting holes adapted to the adjusting part, and the regulating part clearance fits the adjusting hole so that the cross-sectional width of the first flow channel or the second flow channel is adjustable.

[0011] According to the mold structure for co-molding multi-cavity special-sized trim products described in the embodiment of the present application, the adjustment portion is cylindrical, and a notch running through both sides is provided on the top of the adjustment portion.

[0012] According to the mold structure for co-molding multi-cavity special-sized trim products described in an embodiment of the present application, the first runner and the second runner are both arranged on the first jig, the first jig is provided with a glue injection port, and the middle of the first runner and the middle of the second runner are both adjacent to the glue injection port.

[0013] According to the mold structure for co-molding multi-cavity special-sized trim products described in an embodiment of the present application, the first cavity is located between the second cavity and the third cavity, and the volume of the first cavity is greater than the volume of the second cavity or the volume of the third cavity.

[0014] The mold structure for the co-molding of the multi-cavity special-sized decorative strip products has at least the following beneficial effects: after the first jig and the second jig are combined, three cavities are formed for the production of decorative strip products of different sizes, wherein the first cavity is used for the production of decorative strip products of larger sizes, and the second cavity and the third cavity are used for the production of decorative strip products of smaller sizes. The space in the jig is rationally utilized to achieve the simultaneous production of decorative strip products of different sizes in the same mold structure. During injection molding, the glue is distributed through the first runner and the second runner, wherein one end of the first runner is connected to one end of the first cavity, one end of the second runner is connected to the other end of the first cavity, the other end of the first runner is connected to the second cavity, and the other end of the second runner is connected to the third cavity. The glue is distributed from the middle of the runner to both ends, effectively reducing the excessive pressure generated during glue injection and avoiding the impact of high-pressure injection on the runner. Then, the glue is distributed to each cavity through the runner, wherein one end of the two runners is connected to the end of the first cavity. By injecting glue into the first cavity from both ends of the first cavity, the glue is ensured to be uniform. The first cavity with a larger volume can be quickly filled with glue. The other ends of the two runners are connected to the second cavity and the third cavity respectively, which can further reduce the pressure of high-pressure glue injection. When the injection pressure remains unchanged, the glue originally injected into the first cavity is partially distributed to the second cavity and the third cavity, effectively reducing the injection pressure. It can also realize injection molding operations in three cavities at the same time, effectively solving the problem of glue overflow or unqualified product molding caused by excessive injection pressure. In addition, the injection flow rate can be controlled by the regulating valve to further improve the quality of the final molded decorative strip product, greatly improving production efficiency and product yield.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present application is further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 : is a schematic structural diagram of a first fixture according to an embodiment of the present application (a schematic structural diagram of a second fixture is not shown);

[0018] Figure 2 This is a schematic diagram of the connection between the cavity and the flow channel in the embodiment of the present application. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the connection between the cavity and the flow channel in the embodiment of the present application. Figure 2 ;

[0020] Figure 4 This is a schematic diagram of the structure of the regulating valve in the embodiment of the present application. Figure 1 ;

[0021] Figure 5 This is a schematic diagram of the structure of the regulating valve in the embodiment of the present application. Figure 2 .

[0022] Reference numerals: first fixture 100 , first cavity 110 , second cavity 120 , third cavity 130 , first flow channel 140 , second flow channel 150 , injection port 160 , regulating valve 170 , regulating portion 171 , stud portion 172 . DETAILED DESCRIPTION

[0023] This section will describe the specific embodiments of the present application in detail. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0024] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0025] In the description of this application, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0026] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0027] Reference Figures 1 to 3The mold structure for the co-molding production of multi-cavity, special-sized decorative strip products in the embodiment of the present application includes a first jig 100 and a second jig. After the first jig 100 and the second jig are molded together, a first cavity 110, a second cavity 120, a third cavity 130, a first runner 140 and a second runner 150 are formed. Specifically, after the first jig 100 and the second jig are molded together, three cavities for the production of decorative strip products of different sizes are formed, among which the first cavity 110 is used for the production of larger decorative strip products, and the second cavity 120 and the third cavity 130 are used for the production of smaller decorative strip products. The space in the jig is reasonably utilized to achieve the simultaneous production of decorative strip products of different sizes in the same mold structure.

[0028] Furthermore, one end of the first flow channel 140 is connected to one end of the first cavity 110, the other end of the first flow channel 140 is connected to the second cavity 120, one end of the second flow channel 150 is connected to one end of the first cavity 110, and the other end of the second flow channel 150 is connected to the third cavity 130, and both ends of the first flow channel 140 and the second flow channel 150 are provided with regulating valves 170 for adjusting the flow rate.

[0029] During injection molding, the glue is distributed through the first runner 140 and the second runner 150, wherein one end of the first runner 140 is connected to one end of the first cavity 110, one end of the second runner 150 is connected to the other end of the first cavity 110, the other end of the first runner 140 is connected to the second cavity 120, and the other end of the second runner 150 is connected to the third cavity 130. The glue is distributed from the middle of the runner to both ends, which effectively reduces the excessive pressure generated during glue injection and avoids the impact of high-pressure injection on the runner. Then, the glue is distributed to each cavity through the runner, wherein one end of the two runners is connected to the end of the first cavity 110, and the glue is distributed from both ends of the first cavity 110 to the first cavity 110. Glue is injected into the mold to ensure that the larger first cavity 110 can be quickly filled with glue. The other ends of the two runners are connected to the second cavity 120 and the third cavity 130 respectively, which can further reduce the pressure of high-pressure glue injection. When the injection pressure remains unchanged, the glue originally injected into the first cavity 110 is divided into the second cavity 120 and the third cavity 130, which effectively reduces the injection pressure. It can also realize simultaneous injection molding of the three cavities, effectively solving the problem of glue overflow or unqualified product molding due to excessive injection pressure. In addition, the injection flow rate can be controlled by the regulating valve 170, further improving the quality of the final molded decorative strip product, greatly improving production efficiency and product yield.

[0030] In some embodiments, the first cavity 110 is located between the second cavity 120 and the third cavity 130. The volume of the first cavity 110 is greater than the volume of the second cavity 120 or the volume of the third cavity 130. The second cavity 120 and the third cavity 130 are designed using the space remaining when the first fixture 100 and the second fixture form the first cavity 110, effectively utilizing the mold. By rationally arranging the positions of the cavities, simultaneous production can be ensured. The first fixture 100 is fixed and the second fixture is movable. The first runner 140 and the second runner 150 are both provided on the first fixture 100. The first fixture 100 is provided with a glue injection port 160. The middle of the first runner 140 and the middle of the second runner 150 are adjacent to the glue injection port 160. Placing the glue injection port 160 in the middle of the runner can effectively distribute the glue.

[0031] Furthermore, both the first flow channel 140 and the second flow channel 150 include a first section and a second section. The first section connects to the first cavity 110, and the second section connects to the second cavity 120 or the third cavity 130. The width of the second section is smaller than that of the first section. Because the first cavity 110 is relatively large, designing the first section to be wider than the second section can increase the injection speed of the first cavity 110. This ensures that when glue is injected simultaneously, all cavities are filled with glue, ensuring that parts of the product are not incompletely formed when the mold is opened.

[0032] Furthermore, in a preferred embodiment of the present application, the cross-sectional width of the first section is 10 mm, and the cross-sectional width of the second section is 7 mm. By appropriately adjusting the regulating valve 170, the three cavities can be simultaneously filled with glue.

[0033] To ensure high-quality injection molding, the second section connects to the middle of the second cavity 120 or the middle of the third cavity 130. Because the second and third cavities 120 and 130 are relatively small, injection from both ends is unnecessary. Injecting from the middle effectively evacuates air from the cavity, ensuring high-quality injection and improving product yield.

[0034] In the embodiment of the present application, the regulating valve 170 is threadedly connected to the first flow channel 140 or the second flow channel 150, and the threaded connection facilitates and quickly adjusts the flow rate of the flow channel. Specifically, the regulating valve 170 includes a stud portion 172, and the first flow channel 140 and the second flow channel 150 are both provided with screw holes that are compatible with the stud portion 172.

[0035] Further, such as Figure 5As shown, the regulating valve 170 includes a regulating portion 171. The first flow channel 140 and the second flow channel 150 are both provided with regulating holes adapted to the regulating portion 171. The regulating portion 171 is clearance-matched with the regulating hole to allow the cross-sectional width of the first flow channel 140 or the second flow channel 150 to be adjustable. By screwing and adjusting the depth of the regulating portion 171 into the flow channel, the flow opening size of the flow channel at the regulating valve 170 is controlled, ensuring that under the same injection pressure, each cavity can obtain sufficient glue within the same time. It should be noted that when the regulating portion 171 is fully inserted into the flow channel, the flow channel and the cavity are not connected. Therefore, by adjusting the regulating portion 171, the flow rate of the glue entering the cavity can be regulated.

[0036] like Figure 4 and Figure 5 As shown, the regulating portion 171 is cylindrical, and a slot is provided on the top of the regulating portion 171 that passes through both sides, so as to facilitate adjusting the depth of the regulating portion 171 into the flow channel by a flat screwdriver, thereby realizing rapid adjustment of the flow rate of the flow channel.

[0037] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A mold structure for the common production of multi-cavity, special-shaped decorative strips, characterized by: The present invention comprises a first jig and a second jig, wherein the first jig and the second jig form a first cavity, a second cavity, a third cavity, a first runner and a second runner after being molded together, one end of the first runner is connected to one end of the first cavity, the other end of the first runner is connected to the second cavity, one end of the second runner is connected to the other end of the first cavity, the other end of the second runner is connected to the third cavity, and both ends of the first runner and the second runner are provided with regulating valves for adjusting the flow rate.

2. The mold structure for co-molding multi-cavity special-shaped decorative strips according to claim 1, characterized in that: The first flow channel and the second flow channel each include a first section and a second section, the first section is connected to the first cavity, the second section is connected to the second cavity or the third cavity, and the width of the second section is smaller than the width of the first section.

3. The mold structure for co-molding multi-cavity special-shaped decorative strips according to claim 2, characterized in that: The width of the first section is 10 mm, and the width of the second section is 7 mm.

4. The mold structure for co-molding multi-cavity special-shaped decorative strips according to claim 2, characterized in that: The second section is connected to the middle of the second cavity or the middle of the third cavity.

5. The mold structure for co-molding multi-cavity special-sized decorative strips according to any one of claims 1 to 4, characterized in that: The regulating valve is threadedly connected to the first flow channel or the second flow channel.

6. The mold structure for co-molding multi-cavity special-sized decorative strips according to claim 5, characterized in that: The regulating valve includes a stud portion, and both the first flow channel and the second flow channel are provided with screw holes adapted to the stud portion.

7. The mold structure for co-molding multi-cavity special-sized decorative strips according to claim 6, characterized in that: The regulating valve includes a regulating part, and the first flow channel and the second flow channel are both provided with regulating holes adapted to the regulating part. The regulating part is loosely matched with the regulating hole, so that the cross-sectional width of the first flow channel or the second flow channel is adjustable.

8. The mold structure for co-molding multi-cavity special-shaped decorative strips according to claim 7, characterized in that: The adjusting portion is columnar, and a notch running through two sides is provided on the top of the adjusting portion.

9. The mold structure for co-molding multi-cavity special-sized decorative strips according to claim 1, characterized in that: The first flow channel and the second flow channel are both provided on the first fixture. The first fixture is provided with a glue injection port. The middle of the first flow channel and the middle of the second flow channel are both adjacent to the glue injection port.

10. The mold structure for co-molding multi-cavity special-shaped decorative strips according to claim 1, characterized in that: The first mold cavity is located between the second mold cavity and the third mold cavity, and the volume of the first mold cavity is greater than the volume of the second mold cavity or the volume of the third mold cavity.

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