Double-color mold

Abstract

A double-color mold comprises a rear mold assembly, a first front mold assembly and a second front mold assembly, the rear mold assembly comprises a rear mold plate, a rear mold core and a slide seat, the rear mold core and the slide seat are installed on the rear mold plate, and an inclined guide face is arranged on the slide seat; the first front mold assembly comprises a first front mold plate, a first front mold core and a first inclined guide block, the first front mold core and the first inclined guide block are installed on the first front mold plate, the first inclined guide block is provided with a first abutting face, and a first abrasion-resistant block is fixed to the first abutting face. The second front mold assembly comprises a second front mold plate, a second front mold core and a second inclined guide block, the second front mold core and the second inclined guide block are installed on the second front mold plate, the second inclined guide block is provided with a second abutting face, a second abrasion-resistant block is fixed to the second abutting face, and guide grooves are formed in the two opposite end faces of the second inclined guide block in a concave mode; the slide seat comprises guide columns, and the guide columns are movably arranged on the two opposite end faces, facing the second inclined guide block, of the slide seat.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a double-color mold. Background Art

[0002] At present, the application of two-color injection molding technology is becoming more and more popular, and two-color injection products are constantly entering people's production and life. The production of two-color injection products requires the application of two-color molds. Two-color molds refer to molds in which two plastic materials are injected on the same injection molding machine and molded twice, but the product is only ejected once. The two-color mold generally has a first front mold, a second front mold and a rear mold that can rotate 180°. Injection molding is performed in the first front mold and the second front mold successively to complete the two molding of the product, thereby obtaining a two-color product of two plastic materials.

[0003] Two-color molds are usually demoulded through a slide structure, which is usually driven by an additional air cylinder or oil cylinder, making the two-color mold structure complex and the production cost high. In addition, the slide structure needs to move a long distance, and the air cylinder or oil cylinder is also relatively long, resulting in the size of the assembled mold being too large, making the installation or maintenance of the two-color mold inconvenient and the transportation inconvenient. In addition, the air cylinder or oil cylinder controls its action sequence through the signal in the two-color mold, making online debugging very inconvenient.

[0004] Therefore, in view of the problem that the structure of the slider in the current two-color mold is relatively complex, it is urgent to develop a new machine or new technology to solve the above problem. Utility Model Content

[0005] The utility model aims to provide a two-color mold to solve the problem that the structure of the slide in the current two-color mold is relatively complicated.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A two-color mold, comprising:

[0008] A rear mold assembly, comprising a rear mold plate, a rear mold core and a slide seat, wherein the rear mold core and the slide seat are respectively mounted on the rear mold plate, and an inclined guide surface is provided on the slide seat;

[0009] A first front mold assembly, comprising a first front mold plate, a first front mold core and a first oblique guide block, wherein the first front mold core and the first oblique guide block are respectively mounted on the first front mold plate, the first oblique guide block is provided with a first abutting surface matched with the oblique guide surface, and a first wear-resistant block in contact with the oblique guide surface is fixed on the first abutting surface;

[0010] A second front mold assembly, comprising a second front mold plate, a second front mold core and a second oblique guide block, wherein the second front mold core and the second oblique guide block are respectively mounted on the second front mold plate, the second oblique guide block is provided with a second abutting surface matched with the oblique guide surface, a second wear-resistant block in contact with the oblique guide surface is fixed on the second abutting surface, and guide grooves are concavely provided on opposite end surfaces of the second oblique guide block;

[0011] Wherein, the slide seat comprises guide posts, which are movably arranged on opposite end surfaces of the slide seat facing the second inclined guide block;

[0012] When the first front mold assembly and the rear mold assembly are closed, the first inclined guide block pushes the slider seat to move inward, and the guide column and the first inclined guide block do not interfere with each other. When the mold is opened, the first inclined guide block separates from the slider seat upward. When the second front mold assembly and the rear mold assembly are closed, the second inclined guide block cooperates with the slider seat, and the guide column is clamped in the guide groove. When the mold is opened, the second inclined guide block moves upward, and the guide column moves along the guide groove and drives the slider seat to move outward.

[0013] Further, the guide groove extends outward obliquely from top to bottom at opposite end surfaces of the second inclined guide block, and the guide groove extends to the lower surface of the second inclined guide block and penetrates the lower surface of the second inclined guide block.

[0014] Furthermore, the extending direction of the guide groove is parallel to the extending direction of the inclined guide surface.

[0015] Furthermore, the slide seat also includes a spring. The slide seat is provided with a movable hole corresponding to the guide column. The spring is arranged in the movable hole, and one end of the spring abuts against the guide column. The guide column is telescopically arranged in the movable hole.

[0016] Furthermore, the guide column has an extension portion and a limiting portion, the limiting portion is arranged in the movable hole, and the extension portion protrudes out of the movable hole.

[0017] Furthermore, the movable hole includes a receiving hole and an extension hole. The receiving hole is coaxially connected with the extension hole. The receiving hole accommodates a limiting portion and a spring. One end of the spring abuts against the limiting portion. The extension hole is movably provided with an extension portion.

[0018] Furthermore, the diameter of the extension hole is smaller than the diameter of the accommodating hole, and the cross-sectional area of ​​the extension portion is smaller than the cross-sectional area of ​​the limiting portion.

[0019] Furthermore, the extension portion is provided with a rounded corner structure.

[0020] Furthermore, the inclination angle of the first abutting surface, the inclination angle of the second abutting surface, and the inclination angle of the inclined guide surface are consistent.

[0021] Furthermore, the first inclined guide block corresponds to the first wear-resistant block and has a first mounting groove on the first abutment surface, and the first wear-resistant block is installed in the first mounting groove; the second inclined guide block corresponds to the second wear-resistant block and has a second mounting groove on the second abutment surface, and the second wear-resistant block is installed in the second mounting groove.

[0022] The utility model has the beneficial effects of a two-color mold: through the cooperation of the first inclined guide block and the inclined guide surface, the synchronous movement of the slide seat when the two-color mold is closed is realized; through the cooperation of the second inclined guide block and the guide column, the linkage demoulding of the slide seat when the two-color mold is opened is realized. Not only is the structure simple and maintenance is convenient, and the production cost is reduced, but also the demoulding action of the slide seat of the two-color mold is simplified, thereby improving the production efficiency of the two-color mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional view of a first front mold component and a rear mold component of a two-color mold of the utility model in a state ready to be molded.

[0024] Figure 2 It is a cross-sectional view of a first front mold component and a rear mold component of a two-color mold of the utility model in a mold closing state.

[0025] Figure 3 It is a cross-sectional view of a first front mold component and a rear mold component of a two-color mold of the utility model in a mold opening state.

[0026] Figure 4 It is a cross-sectional view of a second front mold component and a rear mold component of a two-color mold of the utility model in a state ready to be molded.

[0027] Figure 5 It is a cross-sectional view of a second front mold component and a rear mold component of a two-color mold of the utility model in a mold closing state.

[0028] Figure 6 It is a cross-sectional view of a second front mold component and a rear mold component of a two-color mold of the utility model in a mold opening state.

[0029] Figure 7 for Figure 3 Enlarged cross-sectional view of point A in the middle.

[0030] Figure 8 for Figure 6 Enlarged cross-sectional view of point B.

[0031] Fig. 9 It is a three-dimensional diagram of a first front mold component of a two-color mold of the utility model.

[0032] Fig.10 It is a three-dimensional diagram of a second front mold component of a two-color mold of the utility model.

[0033] Fig.11The utility model is a three-dimensional diagram of a rear mold component of a two-color mold.

[0034] Fig.12 for Fig.11 A three-dimensional view of the slide seat of the rear mold assembly shown.

[0035] Fig.13 for Fig.12 A partial cross-sectional view of the sliding seat shown.

[0036] Fig.14 for Fig.13 A cross-sectional view of the movable hole of the sliding seat shown.

[0037] Fig.15 for Fig.13 A three-dimensional view of the guide column of the slide seat shown. DETAILED DESCRIPTION

[0038] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0039] The terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", etc. in the specification and claims of the utility model indicate directions or position relationships based on the directions or position relationships shown in the drawings, and are only for the clarity of expressing the technical solutions and the convenience of description, and therefore cannot be understood as limitations on the present application.

[0040] See also Figure 1-Figure 12 A two-color mold comprises a rear mold assembly 10, a first front mold assembly 20 and a second front mold assembly 30. The first front mold assembly 20 and the second front mold assembly 30 share the same rear mold assembly 10. The rear mold assembly 10 can rotate along the center of the two-color mold, and the first front mold assembly 20 and the second front mold assembly 30 can only perform mold opening and closing movements in the mold opening and closing directions.

[0041] The rear mold assembly 10 includes a rear mold plate 11 , a rear mold core 12 and a slider seat 13 . The rear mold core 12 and the slider seat 13 are respectively mounted on the rear mold plate 11 , and an inclined guide surface 135 is provided on the slider seat 13 .

[0042] The first front mold assembly 20 includes a first front mold plate 21, a first front mold core 22 and a first inclined guide block 23. The first front mold core 22 and the first inclined guide block 23 are respectively installed on the first front mold plate 21. The first inclined guide block 23 is provided with a first abutting surface 231 matching the inclined guide surface 135. A first wear-resistant block 232 in contact with the inclined guide surface 135 is fixed on the first abutting surface 231. The opposite end surfaces of the first inclined guide block 23 are planes.

[0043] The second front mold assembly 30 includes a second front mold plate 31, a second front mold core 32 and a second inclined guide block 33. The second front mold core 32 and the second inclined guide block 33 are respectively installed on the second front mold plate 31. The second inclined guide block 33 is provided with a second abutment surface 331 matching the inclined guide surface 135. A second wear-resistant block 332 in contact with the inclined guide surface 135 is fixed on the second abutment surface 331. Guide grooves 334 are recessed on the opposite end surfaces of the second inclined guide block 33.

[0044] The slide seat 13 includes guide posts 131 , and the guide posts 131 are movably disposed on the opposite end surfaces of the slide seat 13 facing the second inclined guide block 33 .

[0045] During operation, the first front mold assembly 20 and the second front mold assembly 30 are matched with the rear mold assembly 10 in sequence to close the mold. When the first front mold assembly 20 and the rear mold assembly 10 are closed, the first front mold plate 21 drives the first inclined guide block 23 to move downward and approach the slider seat 13 of the rear mold assembly 10, and the first abutting surface 231 of the first inclined guide block 23 abuts against the inclined guide surface 135 of the slider seat 13, so that the first inclined guide block 23 pushes the slider seat 13 to move inward, and at this time, the guide column 131 of the slider seat 13 does not interfere with the first inclined guide block 23; when the first front mold assembly 20 and the rear mold assembly 10 are opened, since the first inclined guide block 23 and the slider seat 13 are only in surface contact and have no connection structure, the first inclined guide block 23 is separated from the slider seat 13 upward, and the slider seat 13 remains in position. The rear mold assembly 10 rotates along the center of the two-color mold to the bottom of the second front mold assembly 30. When the second front mold assembly 30 and the rear mold assembly 10 are molded, the second front mold plate 31 drives the second inclined guide block 33 to move downward and approach the slider seat 13 of the rear mold assembly 10, the second inclined guide block 33 cooperates with the slider seat 13, and the guide column 131 is clamped in the guide groove 334; when the second front mold assembly 30 and the rear mold assembly 10 are molded, the second inclined guide block 33 moves upward, the guide column 131 moves along the guide groove 334 and drives the slider seat 13 to move outward, completing demolding.

[0046] In this embodiment, the rear mold assembly 10 includes two slider seats 13, which are symmetrically mounted on the rear mold plate 11. The first front mold assembly 20 includes two first oblique guide blocks 23, which are symmetrically mounted on the first front mold plate 21. The second front mold assembly 30 includes two second oblique guide blocks 33, which are symmetrically mounted on the second front mold plate 31.

[0047] As described above, the two-color mold proposed by the utility model realizes the synchronous movement of the slider seat 13 when the two-color mold is closed through the cooperation of the first inclined guide block 23 and the inclined guide surface 135; and realizes the linkage demoulding of the slider seat 13 when the two-color mold is opened through the cooperation of the second inclined guide block 33 and the guide column 131. Not only is the structure simple, maintenance is convenient, and production costs are reduced, but also the demoulding action of the slider seat 13 of the two-color mold is simplified, thereby improving the production efficiency of the two-color mold.

[0048] See also Figure 4-Figure 6 , Figure 8 and Fig.10 The guide groove 334 extends outward obliquely from top to bottom at the opposite end surfaces of the second oblique guide block 33, and the guide groove 334 extends to the lower surface of the second oblique guide block 33 and penetrates the lower surface of the second oblique guide block 33. When the second front mold assembly 30 and the rear mold assembly 10 are molded, the guide column 131 moves along the guide groove 334 and drives the slider seat 13 to move outward. Since the guide groove 334 penetrates the lower surface of the second oblique guide block 33, as the second oblique guide block 33 moves upward, the guide column 131 moves along the guide groove 334 and smoothly disengages from the guide groove 334, thereby disengaging the connection between the slider seat 13 and the second oblique guide block 33, and realizing the linkage demoulding of the slider seat 13.

[0049] More specifically, the extension direction of the guide groove 334 is parallel to the extension direction of the inclined guide surface 135 . This arrangement ensures that the guide column 131 moves smoothly along the guide groove 334 , while reducing the wear between the guide column 131 and the guide groove 334 .

[0050] See also Fig.13The slide seat 13 further includes a spring 133 and a fixing block 134. The slide seat 13 is provided with a movable hole 132 corresponding to the guide column 131. The spring 133 is arranged in the movable hole 132, and one end of the spring 133 abuts against the guide column 131. The guide column 131 is telescopically arranged in the movable hole 132. The fixing block 134 is fixed to the slide seat 13 by a fastener 136, and the other end of the spring 133 abuts against the fixing block 134.

[0051] See also Figure 1-Figure 6 , Figure 8 and Figure 14-15 The guide column 131 has an extension portion 1312 and a limiting portion 1311. The limiting portion 1311 is arranged in the movable hole 132, and the extending portion 1312 protrudes out of the movable hole 132. The movable hole 132 includes a receiving hole 1321 and an extending hole 1322. The receiving hole 1321 is coaxially connected with the extending hole 1322. The receiving hole 1321 accommodates the limiting portion 1311 and the spring 133. One end of the spring 133 abuts against the limiting portion 1311. The extending hole 1322 is movably provided with the extending portion 1312. More specifically, the extending portion 1312 is provided with a chamfered structure 1313. The chamfered structure 1313 enables the guide column 131 to be smoothly retracted into the movable hole 132 when the guide column 131 abuts against the second inclined guide block 33.

[0052] When the first front mold assembly 20 and the rear mold assembly 10 are engaged or disengaged, the guide column 131 and the first inclined guide block 23 do not interfere with each other. When the second mold assembly and the rear mold assembly 10 are molded, the second inclined guide block 33 moves downward and approaches the sliding seat 13. Since the extension portion 1312 of the guide column 131 has the chamfered structure 1313 and the guide column 131 is telescopically arranged in the movable hole 132, the opposite end surfaces of the second inclined guide block 33 abut against the chamfered structure 1313, thereby forcing the guide column 131 to shrink in the movable hole 132. When the second inclined guide block 33 moves downward and reaches a predetermined position, the guide column 131 bounces up along the axial direction of the movable hole 132 under the elastic force of the spring 133 and is clamped in the guide groove 334. When the second front mold assembly 30 and the rear mold assembly 10 are molded, the guide column 131 moves along the guide groove 334 and drives the sliding seat 13 to move outward to complete demolding.

[0053] More specifically, the diameter of the extension hole 1322 is smaller than the diameter of the receiving hole 1321, and the cross-sectional area of ​​the extension portion 1312 is smaller than the cross-sectional area of ​​the limiting portion 1311. This arrangement ensures that the limiting portion 1311 is always in the receiving hole 1321, so that the guide column 131 will not be separated from the movable hole 132.

[0054] See also Figure 1 and Figure 4 The inclination angles of the first abutting surface 231, the second abutting surface 331, and the inclined guide surface 135 are consistent. On the one hand, such a setting can make the first inclined guide block 23 and the slider seat 13, and the second inclined guide block 33 and the slider seat 13 better cooperate to achieve smooth mold opening and mold closing; on the other hand, it can reduce the wear of the first inclined guide block 23, the second inclined guide block 33, and the slider seat 13 during the mold opening and mold closing process, thereby increasing the service life of the two-color mold.

[0055] See also Figure 7-Figure 10 The first inclined guide block 23 has a first mounting groove 233 on the first abutting surface 231 corresponding to the first wear-resistant block 232, and the first wear-resistant block 232 is installed in the first mounting groove 233; the second inclined guide block 33 has a second mounting groove 333 on the second abutting surface 331 corresponding to the second wear-resistant block 332, and the second wear-resistant block 332 is installed in the second mounting groove 333.

[0056] More specifically, a side of the first wear-resistant block 232 facing the inclined guide surface 135 is higher than the first abutting surface 231, and a side of the second wear-resistant block 332 facing the inclined guide surface 135 is higher than the second abutting surface 331. The first wear-resistant block 232 and the second wear-resistant block 332 can respectively prevent the first inclined guide block 23 and the second inclined guide block 33 from being worn, thereby increasing the service life of the two-color mold.

[0057] See also Figure 1-Figure 6 and Fig.11 The rear mold assembly 10 further includes an insert slider 14, which is slidably disposed on the rear mold core 12 and is fixedly connected to the slide seat 13. The first front mold core 22, the rear mold core 12, and the insert slider 14 together form a first injection cavity; the second front mold core 32, the rear mold core 12, and the insert slider 14 together form a second injection cavity, and the two-color product is molded in the second injection cavity.

[0058] When the first front mold assembly 20 and the rear mold assembly 10 are molded together, the first inclined guide block 23 pushes the slider 13 to move inward, and the insert slider 14 follows the slider 13 to move inward; when the first front mold assembly 20 and the rear mold assembly 10 are molded together, the insert slider 14 remains in position; when the second front mold assembly 30 and the rear mold assembly 10 are molded together, the insert slider 14 remains in position; when the second front mold assembly 30 and the rear mold assembly 10 are molded together, the second inclined guide block 33 moves upward to drive the slider 13 to move outward, and the insert slider 14 follows the slider 13 to move outward to complete demolding.

[0059] See also Fig.11 The rear mold assembly 10 also includes a pressing block 15, which is fixed on the rear mold plate 11 and is located at opposite ends of the slider seat 13. The pressing block 15 is used to guide the movement of the slider seat 13 to prevent the slider seat 13 from deviating from a predetermined trajectory during movement and causing damage to the two-color mold.

[0060] The utility model has the beneficial effects of a two-color mold: not only the structure is simple, maintenance is convenient, and production cost is reduced, but also the demoulding action of the slide seat of the two-color mold is simplified, thereby improving the production efficiency of the two-color mold.

[0061] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A two-color mold, characterized in that: include: A rear mold assembly, comprising a rear mold plate, a rear mold core and a slide seat, wherein the rear mold core and the slide seat are respectively mounted on the rear mold plate, and an inclined guide surface is provided on the slide seat; A first front mold assembly, comprising a first front mold plate, a first front mold core and a first oblique guide block, wherein the first front mold core and the first oblique guide block are respectively mounted on the first front mold plate, the first oblique guide block is provided with a first abutting surface matched with the oblique guide surface, and a first wear-resistant block in contact with the oblique guide surface is fixed on the first abutting surface; A second front mold assembly, comprising a second front mold plate, a second front mold core and a second oblique guide block, wherein the second front mold core and the second oblique guide block are respectively mounted on the second front mold plate, the second oblique guide block is provided with a second abutting surface matched with the oblique guide surface, a second wear-resistant block in contact with the oblique guide surface is fixed on the second abutting surface, and guide grooves are concavely provided on opposite end surfaces of the second oblique guide block; Wherein, the slide seat comprises a guide column, and the guide column is movably arranged on the opposite end surfaces of the slide seat facing the second oblique guide block; When the first front mold assembly and the rear mold assembly are molded together, the first inclined guide block pushes the slider seat to move inward, and the guide column and the first inclined guide block do not interfere with each other. When the mold is opened, the first inclined guide block is disengaged from the slider seat upward. When the second front mold assembly and the rear mold assembly are molded together, the second inclined guide block cooperates with the slider seat, and the guide column is clamped in the guide groove. When the mold is opened, the second inclined guide block moves upward, and the guide column moves along the guide groove and drives the slider seat to move outward.

2. A two-color mold as claimed in claim 1, characterized in that: The guide groove extends outward obliquely from top to bottom at the opposite end surfaces of the second oblique guide block, and the guide groove extends to the lower surface of the second oblique guide block and penetrates the lower surface of the second oblique guide block.

3. A two-color mold as claimed in claim 2, characterized in that: The extending direction of the guide groove is parallel to the extending direction of the inclined guide surface.

4. A two-color mold as claimed in claim 1, characterized in that: The slide seat further comprises a spring. The slide seat is provided with a movable hole corresponding to the guide column. The spring is arranged in the movable hole. One end of the spring abuts against the guide column. The guide column is telescopically arranged in the movable hole.

5. A two-color mold as claimed in claim 4, characterized in that: The guide column has an extension portion and a limiting portion, the limiting portion is arranged in the movable hole, and the extension portion protrudes out of the movable hole.

6. A two-color mold as claimed in claim 5, characterized in that: The movable hole comprises a receiving hole and an extension hole. The receiving hole is coaxially connected with the extension hole. The receiving hole accommodates the limiting part and the spring. One end of the spring abuts against the limiting part. The extension hole is movably provided with the extension part.

7. A two-color mold as claimed in claim 6, characterized in that: The diameter of the extension hole is smaller than the diameter of the accommodating hole, and the cross-sectional area of ​​the extension portion is smaller than the cross-sectional area of ​​the limiting portion.

8. A two-color mold as claimed in claim 5, characterized in that: The extension portion is provided with a rounded corner structure.

9. A two-color mold as claimed in claim 1, characterized in that: The inclination angle of the first abutting surface, the inclination angle of the second abutting surface, and the inclination angle of the inclined guide surface are consistent.

10. A two-color mold according to claim 1, characterized in that: The first inclined guide block has a first mounting groove on the first abutting surface corresponding to the first wear-resistant block, and the first wear-resistant block is installed in the first mounting groove; the second inclined guide block has a second mounting groove on the second abutting surface corresponding to the second wear-resistant block, and the second wear-resistant block is installed in the second mounting groove.

Images