Double-color injection molding mechanism with variable glue injection port center distance

Abstract

The utility model provides a double-color injection molding mechanism with a variable center distance of a glue injection port, which can adjust the center distance of the glue injection port to avoid glue leakage, can realize double-color injection molding in the same mold, and is low in production cost. The injection device comprises a base, two sets of injection assemblies are symmetrically arranged on the two sides of the base, the two sets of injection assemblies move oppositely on the base through sliding mechanisms respectively, and each injection assembly comprises a fixing frame, a material pipe installed on the fixing frame and a material barrel communicated with the material pipe. A through adjusting groove is formed in the position, between the two ejection assemblies, of the base, the two material pipes penetrate through the adjusting groove, and a lifting assembly connected with the fixing frame is installed on the sliding mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a two-color injection molding mechanism with variable center distance of injection ports. Background Art

[0002] An injection molding machine is a commonly used plastic molding machine, mainly including an injection system, a mold clamping system, a driving system and a control system. These systems cooperate with each other to complete the molding of plastic parts. More and more new energy battery cover accessories adopt two-color injection molding technology. The existing two-color injection molding is realized by two independent injection mechanisms. However, the existing two-color injection molding mechanism is a fixed structure, and the center distance between the two injection ports cannot be adjusted. Therefore, there are many position matching tolerances between the center of the injection nozzle and the center of the mold, which also makes there always be a deviation between the center of the injection nozzle and the center of the mold gate, resulting in glue leakage at the joint between the injection nozzle and the mold gate, thus affecting production; in addition, since the spacing between the mold gates used is different for different injection molded products, the existing two-color injection molding is to set two sets of molds (each mold realizes one color) on the same injection molding machine to realize two-color injection molding, which leads to relatively high production costs. Summary of the Utility Model

[0003] In view of the above problems, the utility model provides a two-color injection molding mechanism with variable center distance of injection ports, which can adjust the center distance of the injection ports, avoid glue leakage, and can realize two-color injection molding in the same mold with low production cost.

[0004] The utility model adopts the following technical scheme: a two-color injection molding mechanism with variable center distance of injection ports, which includes a base. Two sets of injection components are symmetrically arranged on both sides of the base. Both sets of injection components respectively move relatively towards each other on the base through a sliding mechanism. The injection component includes a fixed frame, a material pipe installed on the fixed frame, and a material barrel communicated with the material pipe. An adjustment groove is provided on the base between the two sets of injection components, and both sets of material pipes pass through the adjustment groove. The sliding mechanism is equipped with a lifting component connected to the fixed frame.

[0005] Further, a slide rail is arranged on the base between the two sets of injection components. The sliding mechanism includes a sliding seat, and the lifting component is installed on the sliding seat. The sliding seat is assembled on the slide rail through a slider;

[0006] Further, the sliding mechanism further includes a push-pull cylinder. The push-pull cylinder is installed on the limit seat, and the limit seat is fixed on the base. The piston rod of the push-pull cylinder passes through the limit seat and is connected to the push-pull block. The push-pull block is fixed to the bottom of the sliding seat. A position block is installed on the limit seat through a fixing plate, a scale rod is installed on the position block, and a positioning member for passing through the scale rod is installed on the sliding seat;

[0007] Further, a shooting cylinder is installed on the fixing frame. The top end of the material pipe is connected to the storage motor, and the core shaft of the shooting cylinder is connected to the storage motor;

[0008] Further, the lifting assembly includes a guide rod and an oil cylinder. Supports are installed at both ends of the fixing frame, the oil cylinder is installed on the supports, the guide rod passes through the supports and is fixed to the sliding seat, and the piston rod of the oil cylinder passes through the supports and is connected to the sliding seat;

[0009] Further, an adjusting block is installed on the base below the sliding seat. A plurality of positioning holes are formed in the adjusting block, a waist-shaped hole is formed in the sliding seat, and a pin passes through the waist-shaped hole and is inserted into the positioning hole.

[0010] The beneficial effects of the present utility model are that two sets of injection mechanisms are symmetrically arranged on both sides of the base and can move relatively in opposite directions on the base through the sliding mechanism. After the injection mechanism is lifted by the lifting assembly, through the action of the sliding mechanism, the position adjustment of the material pipe can be realized, that is, the adjustment of the center distance of the glue injection ports on the material pipe can be realized, ensuring that the center of the glue injection port is aligned with the center of the mold glue inlet, avoiding glue leakage at the joint between the nozzle and the mold glue inlet, and since the center distance of the glue injection ports is adjustable, only one set of molds is required to form two products, which is convenient for realizing two-color injection molding, has low cost, and has good economic use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a perspective view of the present utility model;

[0012] Figure 2 is Figure 1 the enlarged structural schematic diagram of part I of

[0013] Figure 3 is a cross-sectional view of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] Such as Figures 1 to 3As shown in the figure, a variable center distance glue injection port two-color injection molding mechanism of the utility model includes a base 1. On both sides of the base 1, two sets of injection components are symmetrically arranged. The two sets of injection components respectively move relatively towards each other on the base 1 through a sliding mechanism. The injection component includes a fixed frame 2, a material pipe 3 installed on the fixed frame 2, and a material barrel 4 communicated with the material pipe 3. A through adjustment groove 5 is provided on the base 1 between the two sets of injection components. Both sets of material pipes 3 pass through the adjustment groove 5. An elevating component connected to the fixed frame 2 is installed on the sliding mechanism; a shot cylinder 6 is installed on the fixed frame 2. The top end of the material pipe 3 is connected to a storage motor 7, and the core shaft of the shot cylinder 6 is connected to the storage motor 7;

[0015] A slide rail 8 is arranged on the base 1 between the two sets of injection components. The sliding mechanism includes a sliding seat 10. The elevating component is installed on the sliding seat 10. The sliding seat 10 is assembled on the slide rail 8 through a slider 9; the sliding mechanism further includes a push-pull cylinder 11. The push-pull cylinder 11 is installed on a limit seat 12. The limit seat 12 is fixed on the base 1. The piston rod of the push-pull cylinder 11 passes through the limit seat 12 and is connected to a push-pull block 13. The push-pull block 13 is fixed to the bottom of the sliding seat 10. A position block 15 is installed on the limit seat 12 through a fixing plate 14. A benchmark ruler 16 is installed on the position block 15. A position member 17 for passing through the benchmark ruler 16 is installed on the sliding seat 10. When the stroke of the push-pull cylinder 11 ends, the benchmark ruler 16 passes through the position member 17 and is locked by a nut, serving the purpose of recording the stroke and limiting the position.

[0016] The elevating component includes a guide rod 18 and an oil cylinder 19. Two ends of the fixed frame 2 are equipped with supports 20. The oil cylinder 19 is installed on the supports 20. The guide rod 18 passes through the supports 20 and is fixed to the sliding seat 10. The piston rod of the oil cylinder 19 passes through the supports 20 and is connected to the sliding seat 10.

[0017] An adjustment block 21 is installed on the base 1 below the sliding seat 10. A number of positioning holes 22 are provided in the adjustment block 21. A waist-shaped hole 23 is provided in the sliding seat 10. A pin 24 passes through the waist-shaped hole 23 and is inserted into the positioning hole 22. It is also possible to set the positioning hole as a threaded hole and perform positioning or fine adjustment through a pin or a screw, etc.

[0018] In the utility model, when the center distance of the glue injection port 25 needs to be adjusted, first, through the action of the elevating mechanism, the fixed frame 2 and the injection mechanism thereon are lifted together. Subsequently, the sliding seat 10 is pushed and pulled by the push-pull cylinder 11, and then the overall position of the injection mechanism can be adjusted. The center distance adjustment of the glue injection port 25 on the material pipe 3 is realized. And due to the adjustable center distance of the glue injection port 25, only one set of molds needs to be set, and two different products can be molded on the same set of molds, reducing the production cost; after the adjustment is completed, the sliding seat 10 can be positioned by inserting the pin 24 through the waist-shaped hole 23 and inserting it into the positioning hole 22; at the same time, the shot cylinder 6 and the storage motor 7 act respectively, and the glue in the material pipe 3 can be ejected, thereby completing the two-color injection molding.

[0019] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0020] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A two-color injection molding mechanism with variable center distance of injection ports, characterized in that: It includes a base, on both sides of which are symmetrically arranged two groups of injection components. The two groups of injection components respectively move relatively towards each other on the base through a sliding mechanism. The injection component includes a fixed frame, a material pipe installed on the fixed frame, and a material barrel communicated with the material pipe. There is a through adjustment groove on the base between the two groups of injection components, and both groups of material pipes pass through the adjustment groove. An elevating component connected to the fixed frame is installed on the sliding mechanism.

2. The variable center distance of the glue injection port of the two-color injection molding mechanism according to claim 1, characterized in that: A slide rail is arranged on the base between the two groups of injection components. The sliding mechanism includes a sliding seat. The elevating component is installed on the sliding seat, and the sliding seat is assembled on the slide rail through a slider.

3. The variable center distance of glue injection ports two-color injection molding mechanism according to claim 2, characterized in that: The sliding mechanism further includes a push-pull cylinder installed on a limit seat fixed to the base. The piston rod of the push-pull cylinder passes through the limit seat and is connected to a push-pull block fixed to the bottom of the sliding seat. A position block is installed on the limit seat through a fixing plate, a benchmark ruler is installed on the position block, and a position member for passing through the benchmark ruler is installed on the sliding seat.

4. A variable center distance of glue injection port two-color injection molding mechanism according to claim 1, characterized in that: An injection cylinder is installed on the fixed frame. The top end of the material pipe is connected to a storage material motor, and the core shaft of the injection cylinder is connected to the storage material motor.

5. A two-color injection molding mechanism with variable center distance of injection ports according to claim 2, characterized in that: The elevating component includes a guide rod and an oil cylinder. Supports are installed at both ends of the fixed frame, the oil cylinder is installed on the supports, the guide rod passes through the supports and is fixed to the sliding seat, and the piston rod of the oil cylinder passes through the supports and is connected to the sliding seat.

6. The variable center distance of injection ports two-color injection molding mechanism according to claim 2, characterized in that: An adjustment block is installed on the base below the sliding seat. A number of positioning holes are provided in the adjustment block, and a kidney-shaped hole is provided in the sliding seat. A plug pin passes through the kidney-shaped hole and is inserted into the positioning hole.

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