Rotary double-color injection mold structure capable of switching injection mold inserts

Abstract

A rotary double-color injection mold structure capable of switching injection molding inserts comprises a lower mold plate and a supporting plate, an insert fixing base capable of sliding along the lower mold plate is arranged on the lower mold plate, a shovel base assembly is connected to the side wall of the insert fixing base, and an insert set A and an insert set B are installed on the surface of the insert fixing base. The insert set A and the insert set B are each composed of product main body inserts and soft rubber inserts which are sequentially arranged at intervals, the arrangement sequence of the product main body inserts and the soft rubber inserts of the insert set A and the insert set B is opposite, the sliding stroke of the insert fixing base is the distance between the adjacent product main body inserts and soft rubber inserts, and a lower mold core is arranged on the lower mold plate. The lower mold core comprises a lower mold core A and a lower mold core B; when the injection mold is used for forming an injection product with the periphery wrapped by soft rubber (the upper mold and the lower mold are both provided with the soft rubber), the injection molding of the injection product can be completed on one set of mold, so that the mold cost is saved, the product forming period is shortened, and the product yield can be improved.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a rotary double-color injection mold structure capable of switching injection molding inserts. Background Art

[0002] As attached Figure 4 and attached Figure 5 The injection molded product shown here, molded using a two-shot mold, has a main body surrounded by a soft rubber coating (both the upper and lower molds are covered with soft rubber). (Note: "this type of product" is used hereafter.) Due to its unique structure, the core and cavity for molding the main body and the soft rubber coating are different. This differs from the molding process for conventional two-shot products, which use different cores with different hard and soft rubber coatings, but the cavity remains the same. Traditionally, molding this type of product required two sets of molds: one for the main body and one for the soft rubber coating. This method of requiring two sets of molds to complete injection molding has many disadvantages: first, it increases the mold cost and requires two sets of molds; second, it increases the time cost. After the main product is injected, it needs to be taken to another set of molds to continue to inject the soft glue, which greatly lengthens the molding cycle of the finished product; third, the quality of the product is difficult to control. Since the product needs to be injection molded on two sets of molds, when injecting the soft glue part, the main product needs to be accurately placed in the soft glue mold cavity. If the placement is not accurate, it will cause the main product to be crushed or even damaged when the front and rear molds are closed. Secondly, it will cause the relative position of the soft glue and the main product to change, which will lead to an increase in the product's unqualified rate. Utility Model Content

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a rotary two-color injection mold structure capable of switching injection mold inserts, so as to solve the technical problems raised in the above-mentioned background technology.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] The cam is fixed on the lower mold body and is provided with a cam, and the cam is fixed on the lower mold body, and the cam is fixed on the lower mold body.

[0006] In the above utility model, further, the shovel base assembly includes a shovel base and a slider seat that cooperates with the inclined surface of the shovel base. The slider seat is fixedly connected to the insert fixing seat through a connecting rod, and a slider fixing seat fixed on the pallet is provided below the slider seat.

[0007] In the above utility model, further, a base is provided under the support plate, a supporting square iron is provided between the base and the support plate, and an ejection mechanism for product demoulding is provided on the surface of the bottom plate.

[0008] In the above-mentioned utility model, further, the mold opening stroke of the buckle machine is greater than the length of the product main body insert and the soft rubber insert extending into the mold core.

[0009] In the above utility model, further, both sides of the insert fixing seat are provided with insert fixing seat pressure strips fixed on the lower template, and both sides of the slide seat are provided with slide pressure strips fixed on the slide fixing seat.

[0010] The beneficial effects of the utility model are:

[0011] When the utility model is used for molding injection molded products whose circumference is wrapped with soft rubber (both the upper and lower molds are provided with soft rubber), such injection molded products can be completed by injection molding on a set of molds, which not only saves mold costs but also shortens the product molding cycle and improves the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a top view of the utility model;

[0013] Figure 2 for Figure 1 Middle AA section view;

[0014] Figure 3This is a schematic diagram of the connection structure between the insert fixing seat and the shovel base assembly of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of an injection molded product with a circumference wrapped in soft rubber in the background technology;

[0016] Figure 5 for Figure 4 Middle BB cross-section view.

[0017] In the figure, 1-product main body insert, 2-soft rubber insert, 3-lower template, 4-support plate, 5-locking machine, 6-insert fixing seat, 7-shovel base assembly, 7.1-shovel base, 7.2-slide seat, 7.3-connecting rod, 7.4-slide fixing seat, 7.5-slide pressure strip, 8-insert group A, 9-insert group B, 10-lower mold core A, 11-lower mold core B, 12-bottom plate, 13-support square iron, 14-ejection mechanism, 15-insert fixing seat pressure strip. DETAILED DESCRIPTION

[0018] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features within these embodiments may be combined with one another, unless they conflict.

[0019] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. Therefore, the drawings only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0020] Example:

[0021] A rotating double-color injection mold structure capable of switching injection mold inserts, see the attached Figure 1 and attached Figure 2As shown, it includes a lower mold body, which includes a lower mold plate 3 and a support plate 4 arranged below the lower mold plate 3. A buckle machine 5 is installed between the lower mold plate 3 and the support plate 4. A base 12 is provided below the support plate 4. A supporting square iron 13 is provided between the base 12 and the support plate 4. An ejection mechanism 14 for product demoulding is provided on the surface of the bottom plate 12. A rotating mechanism (not shown in the figure) for controlling the rotation of the lower mold body is provided below the lower mold body. An insert fixing seat 6 that can slide along the lower mold plate 3 is provided on the lower mold plate 3. The side wall of the insert fixing seat 6 is connected to a shovel base assembly 7 fixed to the lower mold plate 3 and used to drive the insert fixing seat 6 to slide. Further, the shovel base assembly 7 includes a shovel base 7.1 and a slide seat 7.2 that cooperates with the inclined surface of the shovel base 7.1. The slide seat 7.2 is fixedly connected to the insert fixing seat 6 through a connecting rod 7.3. A slide fixing seat 7.4 fixed to the support plate 4 is provided below the slide seat 7.2.

[0022] Continue to combine Figure 3 As shown, the surface of the insert holder 6 is mounted with an insert group A8 and an insert group B9. Insert holder pressure strips 15 fixed to the lower template 3 are provided on both sides of the insert holder 6. Slide pressure strips 7.5 fixed to the slide holder 7.4 are provided on both sides of the slider seat 7.2 to enhance the sliding stability of the insert holder 6 and the slider seat 7.2. Both insert group A8 and insert group B9 are composed of the main product insert 1 and the soft rubber insert 2 arranged in sequence. The main product insert 1 and soft rubber insert 2 of insert group A8 and insert group B9 are arranged in the opposite order. Specifically, insert group A8 is composed of the soft rubber insert 2, the main product insert 1, the soft rubber insert 2, and the main product insert 1 in sequence; while insert group B9 is composed of the main product insert 1, the soft rubber insert 2, the main product insert 1, and the soft rubber insert 2 in sequence. The sliding stroke of the insert fixing seat 6 is the distance between the adjacent product main body inserts 1 and soft rubber inserts 2. The lower mold core is provided on the lower template 3, and the lower mold core includes a lower mold core A10 and a mold core B11 respectively cooperating with the insert group A8 and the insert group B9.

[0023] Specifically, during the use of the present invention, in the initial state, the lower mold body and the upper mold body (not shown in the figure) are in a closed mold state, and the product main body insert 1 of the insert group A8 cooperates with the lower mold core A10 to form the product main body. After completion, the mold is opened, and the lower template 3 moves upward along with the upper mold body under the action of the buckle machine 5 (this movement structure is a conventional structural method of the mold, so the principle will not be explained here), and the product main body insert 1 is separated from the lower mold core A10. At the same time as the mold is opened, the shovel base 7.1 drives the slider seat 7.2 to move to the right, and the slider seat 7.2 drives the strong insert fixing seat 6 to slide to the right through the connecting rod 7.3 during the rightward movement. Preferably, the mold opening stroke of the buckle machine 5 is greater than the length of the product main body insert 1 and the soft rubber insert 2 extending into the mold core. This is to prevent the product main body insert 1 and the soft rubber insert 2 on the insert group A8 and the insert group B9 from interfering with the lower mold core A10 and the mold core B11. Because the travel of the slider 7.2 (i.e., the sliding travel of the insert holder 6) is the distance between the adjacent product body inserts 1 and soft rubber inserts 2, the soft rubber inserts 2 of insert group A8 are aligned with the lower mold core A10, while the product body inserts 1 of insert group B are aligned with the lower mold core B11. The entire lower mold body is now rotated 180° by a rotating mechanism (not shown). It should be noted that the rotating mechanism that drives the lower mold body is a well-known technical solution to those skilled in the art. Specifically, it generally uses bearings or toothed belts to drive the rotation of gears. Therefore, the specific structural principles of the rotating mechanism are not described in detail in this embodiment. After the lower mold body completes its rotation, the mold is closed, and the soft rubber inserts 2 of insert group A extend into the lower mold core A to perform soft rubber injection molding on the formed product body. Simultaneously, the product body inserts 1 of insert group B extend into the lower mold core B to perform injection molding on the product body. After completion, the mold is opened, and the ejection mechanism 14 ejects the finished injection molded part for removal. Finally, the lower mold body rotates 180 degrees as a whole and returns to the initial state, and the shovel base assembly 7 drives the insert fixing seat 6 to move left to the initial state. Repeat the above-mentioned actions to complete the secondary injection molding of the product.

[0024] The above-described embodiments merely represent specific implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A rotary double-color injection mold structure capable of switching injection molding inserts, comprising a lower mold body, the lower mold body comprising a lower mold plate and a support plate arranged below the lower mold plate, a latch machine being installed between the lower mold plate and the support plate, and a rotating mechanism for controlling the rotation of the lower mold body being provided below the lower mold body, wherein the characteristic part is that: an insert fixing seat capable of sliding along the lower mold plate is provided on the lower mold plate, a shovel base assembly fixed to the lower mold plate and used to drive the insert fixing seat to slide is connected to the side wall of the insert fixing seat, an insert group A and an insert group B are installed on the surface of the insert fixing seat, the insert group A and the insert group B are both composed of product main body inserts and soft rubber inserts arranged in sequence, and the product main body inserts and soft rubber inserts of the insert group A and the insert group B are arranged in opposite order, the sliding stroke of the insert fixing seat is the spacing between adjacent product main body inserts and soft rubber inserts, a lower mold core is provided on the lower mold plate, and the lower mold core comprises a lower mold core A and a lower mold core B respectively cooperating with the insert A and the insert B.

2. A rotary double-color injection mold structure capable of switching injection mold inserts according to claim 1, characterized in that: The shovel base assembly includes a shovel base and a slider seat that cooperates with the inclined surface of the shovel base. The slider seat is fixedly connected to the insert fixing seat through a connecting rod. A slider fixing seat fixed on the support plate is provided below the slider seat.

3. The rotary double-color injection mold structure capable of switching injection mold inserts according to claim 1, characterized in that: A base is provided below the support plate, a supporting square iron is provided between the base and the support plate, and an ejection mechanism for product demoulding is provided on the surface of the bottom plate.

4. The rotary double-color injection mold structure capable of switching injection mold inserts according to claim 1, characterized in that: The mold opening stroke of the buckle machine is greater than the length of the product main body insert and the soft rubber insert extending into the mold core.

5. The rotary double-color injection mold structure capable of switching injection mold inserts according to claim 1, characterized in that: The insert fixing seat is provided with insert fixing seat pressure strips fixed on the lower template on both sides of the insert fixing seat, and the slide seat is provided with slide pressure strips fixed on the slide fixing seat on both sides.

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