Slide structure applied to rotary double-color mold

Abstract

The utility model discloses a slide structure applied to a rotary double-color mold, which comprises a shovel base I and a shovel base II which are arranged on a fixed mold of the rotary double-color mold, and a slide seat and a slide insert which are arranged on a movable mold, the slide insert is fixedly connected with the slide seat, the shovel base I is used for driving the slide seat to move during hard rubber injection molding, and the shovel base II is used for driving the slide seat to move during hard rubber injection molding. The second shovel base is used for driving the slide seat to move during soft rubber injection molding, an inclined guide column is fixed to the second shovel base in an inclined mode, the slide seat is provided with a guide open groove in the same inclined direction as the inclined guide column, elastic plug pins arranged on the groove walls of the two sides of the guide open groove are further symmetrically arranged in the slide seat, and the side, away from the guide open groove, of the column face of the inclined guide column is a plane a; a slide positioner is also arranged at the bottom of the slide seat; through the improvement of the scheme, the mold structure is obviously simplified, and the slide seat 2 is optimized to replace a complex oil cylinder mechanism, so that the mold cost and the machining time are saved, and the use stability of the mold is improved; and meanwhile, subsequent assembly, disassembly and maintenance of the mold are facilitated, and the practicability is high.

Description

Technical Field

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

[0002] In the process of injection mold design, some holes and buckles are designed due to the product's own assembly and shape. In the mold design, these product features cannot be directly ejected from the mold. Generally, they are ejected by designing a slanted top or a sliding structure. In the actual design of the injection mold, buckles near the edge of the product often appear in two-color products, such as Figure 1-3 As shown in the product cross-section, the hard glue (PP+EPDM-T20) is snapped onto the edge of the product, and there is also soft glue (TPV) at the edge, so the soft and hard glue at this position need to share a sealing surface.

[0003] There are two existing mold forming methods. The first is a traditional two-color mold, also known as an overmolding mold. However, this type of mold is specific to plastic parts due to its simple structure and low precision. The product clip in this solution has a 0° ejection angle, making secondary positioning impossible and potentially damaging the product, making it unsuitable. The second is a two-color mold with a rotating injection molding machine. The fixed mold side consists of two different cavities, and the movable mold side consists of two identical cores. This allows two different materials to be quickly molded into a single two-color plastic part. This second molding method is used in this case, but it also faces the issue of soft and hard glue sealing. At this point, we need to find a way to prevent the clip ejection slide from retracting after the hard glue is injected. The initial approach would be to use a hydraulic cylinder to control the slide, but this would increase the mold width, the cost of the hydraulic cylinder system, and the processing time, thereby increasing the production cost of the entire mold and the mold manufacturing cycle. Utility Model Content

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a slide structure for a rotary two-color mold to solve the above problems.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] The cam is fixedly mounted on the movable mold body and is provided with a sliding bearing, and the sliding bearing is installed on the movable mold body. The sliding bearing is fixedly connected to the movable mold body. The sliding bearing is fixedly connected to the movable mold body. The sliding bearing is fixedly connected to the movable mold body. The sliding bearing is fixedly connected to the movable mold body. The sliding bearing is fixedly connected to the movable mold body.

[0007] In the above utility model, further, a movable cavity is symmetrically provided in the sliding seat, the movable cavity is vertically connected to the guide slot, the elastic pin includes a pin block and a spring placed in the movable cavity, one end of the pin block is connected to the spring and moves along the movable cavity through the spring.

[0008] In the above utility model, further, the side of the tip block facing the guide slot is a plane b, and the end of the side of the tip block facing away from the guide slot is provided with an inclined surface c.

[0009] In the above utility model, further, a slope d having the same inclination angle as that of the slope c is provided on the other side of the inclined guide column.

[0010] In the above utility model, further, an extrusion surface e is provided between the two inclined surfaces d and matches the arc surface of the guide groove.

[0011] In the above utility model, further, a wear-resistant block 1 is provided on the inclined surface of the shovel base 1 and the shovel base 2 in contact with the sliding seat.

[0012] In the above utility model, further, the bottom of the slider seat is arranged at an angle, and the bottom of the slider seat is correspondingly provided with a second wear-resistant block fixed on the movable mold.

[0013] In the above utility model, further, the wear-resistant block 2 is provided with an upwardly open groove, the slide positioner is placed in the groove, the upper surface of the slide seat is provided with two limiting ridges, and the bottom of the slide seat is provided with a limiting groove that cooperates with the limiting ridges.

[0014] The beneficial effects of the utility model are:

[0015] The utility model arranges different shovel bases 1 and 2 in correspondence with the hard glue hole and the soft glue hole, and combines the slide positioner and the spring pin to realize that after the hard glue is injected, the slide insert at the buckle is not demoulded, and the demoulding action is performed after the soft glue is injected, and the operation is simple. Compared with the traditional oil cylinder driven slide movement, the present solution completely replaces the complex oil cylinder slide core pulling mechanism with the spring pin, which can simplify the design of the mold, reduce the processing cost, save the processing time, and improve the stability of the mold. At the same time, it also facilitates the subsequent assembly, disassembly and maintenance of the mold, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the product structure;

[0017] Figure 2 This is the AA sectional view of the utility model;

[0018] Figure 3 It is a partial enlarged view of the utility model A;

[0019] Figure 4 It is a top view of the rotating two-color mold;

[0020] Figure 5 This is a schematic diagram of the sliding structure of the hard and soft rubber of the utility model;

[0021] Figure 6 This is a main cross-sectional view of the sliding structure of the hard rubber of the utility model;

[0022] Figure 7 This is a main cross-sectional view of the soft rubber sliding structure of the utility model;

[0023] Figure 8 for Figure 7 A top sectional view of

[0024] Figure 9 This is a partial cross-sectional view of the soft rubber slide structure of the present invention;

[0025] Figure 10 This is a schematic structural diagram of the utility model's inclined guide column;

[0026] Figure 11 It is a cross-sectional view of BB of the present utility model.

[0027] In the figure, 1-slide insert, 2-slide seat, 3-shovel base one, 4-shovel base two, 5-guide slot, 6-oblique guide column, 7-elastic pin, 71-pin block, 72-spring, 8-slide locator, 9-movable cavity, 10-wear-resistant block one, 11-wear-resistant block two, 12-groove, 13-limiting ridge, 14-limiting slot. DETAILED DESCRIPTION

[0028] 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.

[0029] As attached Figure 3 As shown, this injection molding product is provided with an undercut structure, and the clip demoulding angle is 0°. After the hard rubber injection molding is completed, the mold is opened, and the insert is demoulded along with the mold opening action. After the mold is rotated 180°, the mold is closed for soft rubber injection molding. However, when the mold is closed, the insert cannot be accurately positioned at the undercut structure for a second time, which makes it easy for the insert to damage the product. Therefore, in order to solve this technical problem, this solution designs a sliding structure for a rotary two-color mold, so that when the mold is opened after the hard rubber injection molding is completed, the insert is not demoulded along with the mold opening process. The insert is always placed in the undercut structure and rotates with the product, and there will be no problem of being unable to position when the mold is closed.

[0030] As attached Figure 4 and attached Figure 5 As shown, a slide structure for a rotary two-color mold includes a shovel base 1 3 and a shovel base 2 4 installed on the fixed mold of the rotary two-color mold, and a slide seat 2 and a slide insert 1 installed on the movable mold. The slide insert 1 is fixedly connected to the slide seat 2. The relative positions of the shovel base 1 3 and the shovel base 2 4 remain unchanged and move up and down with the movement of the fixed mold. The shovel base 1 3 is used to drive the slide seat 2 to move during hard plastic injection molding, and the shovel base 2 4 is used to drive the slide seat 2 to move during soft plastic injection molding. Only the shovel base 2 4 is fixed with an inclined guide column 6, as shown in the attached figure. Figure 6 and attached Figure 7 As shown;

[0031] The structure of the slide seat 2 on the soft and hard plastic holes is the same, as shown in the attached Figure 8 and attached Figure 9 As shown, the slide seat 2 is provided with a guide slot 5 in the same direction as the inclined guide column 6, and the slide seat 2 is also symmetrically provided with elastic pins 7 on both sides of the guide slot 5. The side of the inclined guide column 6 facing away from the guide slot 5 is a plane a. Figure 10 and attached Figure 11As shown; when the mold is closed, the inclined guide post 6 moves downward along the vertical direction with the shovel base 2 4, the inclined guide post 6 squeezes the elastic plug 7 and enters the guide slot 5, and the elastic plug 7 automatically resets; when the mold is opened, the inclined guide post 6 moves upward along the vertical direction with the shovel base 2 4. At this time, because the side of the inclined guide post 6 facing the spring 72 plug is plane a, it cannot squeeze the elastic plug 7. When moving upward, the plane a of the inclined guide post 6 abuts against the elastic plug 7 to drive the elastic plug 7 to slide along the plane a of the inclined guide post 6, thereby driving the entire slide seat 2 and the slide insert 1 to move backward and demold. During the mold opening process, because only the soft glue hole has the inclined guide post 6, only the slide insert 1 on the soft glue hole can perform the demolding action.

[0032] As attached Figure 8 As shown, an active cavity 9 is symmetrically provided in the slide seat 2, and the active cavity 9 is vertically connected to the guide slot 5. The elastic pin 7 includes a pin block 71 and a spring 72 placed in the active cavity 9. One end of the pin block 71 is placed in the active cavity 9 and connected to the spring 72 and moves along the active cavity 9 through the spring 72, and the other end of the pin block 71 extends out of the active cavity 9.

[0033] In the above embodiment, preferably, the surface of the tip block 71 facing the guide slot 5 is a plane b, and the end of the tip block 71 facing away from the guide slot 5 is provided with a bevel c; the other side of the inclined guide post 6 is provided with a bevel d having the same inclination angle as the bevel c. Specifically, when the mold is closed, the bevel d of the inclined guide post 6 presses against the bevel c, and due to the decomposition of the force, the tip block 71 retreats along the movable cavity 9, and the inclined guide post 6 successfully enters the guide slot 5. Then, the tip block 71 automatically resets under the action of the spring 72. When the mold is opened, the inclined guide post 6 moves upward, and the plane a abuts the plane b of the tip block 71, thereby driving the slider seat 2 and the slider insert 1 to move backward and be demolded.

[0034] An extrusion surface e that matches the arc surface of the guide slot 5 is provided between the two inclined surfaces d. When the mold is opened, the extrusion surface contacts the inner wall of the arc of the guide slot 5 .

[0035] In the above embodiment, preferably, wear-resistant blocks 10 are provided on the inclined surfaces of the shovel base 1 3 and the shovel base 2 4 that contact the slider seat 2 .

[0036] As attached Figure 3 and attached Figure 7 As shown, the product's buckle is inclined at about 10° relative to the horizontal plane, but the demoulding angle of the buckle is 0°. Therefore, in this embodiment, it is preferred that the bottom of the slider seat 2 is tilted, and the tilt angle is also set to 10°, so that the slider insert 1 can be demoulded smoothly, and the bottom of the slider seat 2 is correspondingly provided with a wear-resistant block 11 fixed on the movable mold.

[0037] The bottom of the slider seat 2 is also provided with a slider locator 8, which is used to prevent the slider insert 1 from being demoulded when the mold is first opened, that is, after the hard glue is injected, the slider insert 1 at the buckle is not demoulded; wherein, as shown in the attached Figure 6 and attached Figure 9 As shown, the wear-resistant block 11 is provided with an upwardly open groove 12, and the slide positioner 8 is placed in the groove 12. The upper surface of the slide seat 2 is provided with two limiting ribs 13, and the bottom of the slide seat 2 is provided with a limiting groove 14 that cooperates with the limiting ribs 13. The cooperation between the limiting ribs 13 and the limiting groove 14 prevents the slide seat 2 on the hard rubber hole from sliding down together when the mold is opened.

[0038] Working principle:

[0039] When the mold is closed, the shovel base 1 3 corresponding to the hard plastic hole moves down with the fixed mold, and the inclined surface of the shovel base 1 3 abuts against the slider seat 2, and pushes the slider seat 2 and the slider insert 1 to move. After they are in place, the limiting ridge 13 corresponds to the limiting groove 14 on the slider locator 8, and the mold is closed to complete the hard plastic injection molding;

[0040] When the mold is opened, the shovel base 3 moves upward. There is no inclined guide column 6 on the shovel base 3, which will not drive the slider seat 2 to retreat. The hard plastic hole will not eject the injection molded product. The slider seat 2 remains stationary under the action of the slider locator 8. The slider insert 1 is still placed in the buckle of the injection molded product, and the demoulding process is not carried out.

[0041] After the movable mold side rotates 180 degrees, the mold is closed and the soft glue injection is continued. The shovel base 2 4 moves down with the fixed mold, and the inclined guide pin 6 on the shovel base 2 4 moves down accordingly and squeezes the pin block 71 into the guide slot 5. During the mold closing process, the slider seat 2 does not move, and the slider insert 1 is always inserted into the buckle; after the soft glue injection is completed, the mold is opened, and the shovel base 2 drives the inclined guide pin 6 to move upward. Because the inclined guide pin 6 is tilted, during the upward movement of the inclined guide pin 6, the plane a of the inclined guide pin 6 abuts against the plane b of the pin block 71. There is no spring 72 direction (lateral) force on the inclined guide pin 6 to cause the pin block 71 to rebound, and then it can only push the entire slider seat 2 back along the tilt direction of the wear-resistant block. The slider insert 1 also retreats and is demolded. The limiting groove 14 also withdraws from the cooperation with the limiting ridge 13, realizing the complete demolding of the product, and the soft glue hole product is ejected and removed. Repeat the above steps to continue injection molding production.

[0042] Through the improvement of this solution, the mold structure is significantly simplified, and the optimization of the slider seat 2 replaces the complex cylinder mechanism, which not only saves mold cost and processing time and improves the stability of mold use; it also facilitates the subsequent assembly, disassembly and maintenance of the mold, and is highly practical.

[0043] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0044] 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 slide structure for a rotating two-color mold, characterized in that: The invention comprises a shovel base 1 (3) and a shovel base 2 (4) installed on the fixed mold of the rotating two-color mold, and a slider seat (2) and a slider insert (1) installed on the movable mold, wherein the slider insert (1) is fixedly connected to the slider seat (2), the shovel base 1 (3) is used to drive the slider seat (2) to move during hard plastic injection molding, and the shovel base 2 (4) is used to drive the slider seat (2) to move during soft plastic injection molding, an inclined guide column (6) is fixed on the shovel base 2 (4), a guide slot (5) with the same inclined direction as the inclined guide column (6) is provided on the slider seat (2), and a guide slot (5) is symmetrically provided in the slider seat (2) and arranged in the guide slot (5). ) elastic plug pins (7) on both sides of the groove wall, the side of the cylindrical surface of the inclined guide column (6) away from the guide slot (5) is plane a; when the inclined guide column (6) moves downward along the vertical direction with the shovel base (4), the inclined guide column (6) squeezes the elastic plug pin (7) and enters the guide slot (5); when the inclined guide column (6) moves upward along the vertical direction with the shovel base (4), the plane a of the inclined guide column (6) abuts against the elastic plug pin (7) to drive the elastic plug pin (7) to slide along the plane a of the inclined guide column (6), thereby driving the slide insert (1) to move backward and demould; a slide positioner (8) is also provided at the bottom of the slide seat (2).

2. The slide structure for a rotary double-color mold according to claim 1, characterized in that: A movable cavity (9) is symmetrically provided in the sliding seat (2), and the movable cavity (9) is vertically connected to the guide slot (5). The elastic plug (7) comprises a plug block (71) and a spring (72) disposed in the movable cavity (9). One end of the plug block (71) is connected to the spring (72) and moves along the movable cavity (9) via the spring (72).

3. The slide structure for a rotary double-color mold according to claim 2, characterized in that: The side of the tip block (71) facing the guide slot (5) is a plane b, and the end of the side of the tip block (71) facing away from the guide slot (5) is provided with an inclined surface c.

4. The slide structure for a rotary double-color mold according to claim 3, characterized in that: The other side of the inclined guide column (6) is provided with an inclined surface d having the same inclination angle as the inclined surface c.

5. The slide structure for a rotary double-color mold according to claim 4, characterized in that: An extrusion surface e that matches the arc surface of the guide slot (5) is provided between the two inclined surfaces d.

6. The slide structure for a rotary double-color mold according to claim 1, characterized in that: The shovel base 1 (3) and the shovel base 2 (4) are both provided with a wear-resistant block 1 (10) on the inclined surfaces where they contact the sliding seat (2).

7. The slide structure for a rotary double-color mold according to claim 1, characterized in that: The bottom of the slider seat (2) is tilted, and the bottom of the slider seat (2) is correspondingly provided with a second wear-resistant block (11) fixed on the movable mold.

8. The slide structure for a rotary double-color mold according to claim 7, characterized in that: The wear-resistant block 2 (11) is provided with an upwardly opening groove (12), and the slide positioner (8) is placed in the groove (12). The upper surface of the slide seat (2) is provided with two limiting ridges (13), and the bottom of the slide seat (2) is provided with a limiting groove (14) that cooperates with the limiting ridges (13).

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