Guide block injection molding mold

Abstract

The utility model discloses a guide block injection molding mold. The guide block injection molding mold comprises a movable mold and a fixed mold, the movable mold comprises a movable mold back plate, a movable mold base, a movable mold cavity and a movable mold injection molding pipe; the fixed mold comprises a fixed mold back plate, a fixed mold base, a fixed mold cavity and a fixed mold injection molding pipe; the movable mold injection molding pipe and the fixed mold injection molding pipe are respectively arranged at the center position of the top of the movable mold base and the center position of the top of the fixed mold base; the movable mold injection molding pipe and the fixed mold injection molding pipe are both of semicircular structures and mutually form an injection molding opening of a circular structure; the injection mold further comprises two ejection assemblies, the two ejection assemblies are connected with the movable mold and the fixed mold correspondingly, and ejection parts of the two ejection assemblies are connected into the movable mold cavity and the fixed mold cavity correspondingly. According to the device, the injection molding effect is improved by improving the structures and the positions of the movable mold injection molding pipe and the fixed mold injection molding pipe, and the situation that a guide block finished product is attached to the interior of the movable mold cavity or the fixed mold cavity to affect the blanking effect is avoided through the arrangement of the ejection assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts processing, in particular to an injection molding die for a guide block. Background Art

[0002] The guide block plays the role of cooperating with the shift fork to shift the gear during the vehicle's gear shifting process. The guide block is a typical fork-like special-shaped part. It is not large in size, but has a complex shape and high precision requirements, including the distance from the surface to the center of the hole, the shape and position tolerances of the hole and the shift groove, etc.

[0003] Existing guide blocks are often produced by injection molding. The moving mold is driven by a moving structure to move the fixed mold set on the fixed structure, so that the movable mold cavity and the fixed mold cavity form a cavity consistent with the guide block structure, and then the molten material is injected into the cavity. However, the existing feeding method is to use a side feeding method, which often results in uneven feeding, incomplete filling, and unstable size, which poses a great safety hazard to the entire vehicle. In addition, the finished guide block after injection molding will be attached to the movable mold cavity or the fixed mold cavity, and there is a situation where the material does not fall out. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then proposes a guide block injection molding mold.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A guide block injection molding mold comprises a movable mold and a fixed mold; the movable mold comprises a movable mold back plate, a movable mold seat, a movable mold cavity and a movable mold injection tube; the fixed mold comprises a fixed mold back plate, a fixed mold seat, a fixed mold cavity and a fixed mold injection tube; the movable mold injection tube is arranged at the center position of the top of the movable mold seat, and the fixed mold injection tube is arranged at the center position of the top of the fixed mold seat, the movable mold injection tube and the fixed mold injection tube are both semicircular structures and mutually form a circular injection port, so that the molten material injected through the injection port evenly enters the movable mold cavity and the fixed mold cavity; and also comprises an ejection assembly, the ejection assembly has two groups and is respectively connected to the movable mold and the fixed mold, and the ejection parts of the two groups of ejection assemblies are respectively connected to the movable mold cavity and the fixed mold cavity.

[0007] Furthermore, the ejection assembly includes a fixed plate, a truss, a telescopic cylinder and an ejector column; the fixed plate is vertically arranged and a truss is horizontally arranged thereon, wherein one group of trusses of the ejection assembly is connected to the movable mold back plate, and another group of trusses of the ejection assembly is connected to the fixed mold back plate, and a plurality of telescopic cylinders are also arranged on the fixed plate, and each telescopic end of the telescopic cylinder is connected to a ejector column, wherein one group of ejector columns of the ejection assembly passes through the movable mold back plate and extends into the movable mold cavity, and another group of ejector columns of the ejection assembly passes through the fixed mold back plate and extends into the fixed mold cavity.

[0008] Furthermore, there are three telescopic cylinders which are evenly arranged on the fixed plate so that the finished guide block is ejected and discharged in a three-point manner, thereby improving the discharge effect.

[0009] Furthermore, the telescopic cylinder is a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0010] Furthermore, the movable mold also includes a movable mold cold cavity and a movable mold cold inlet pipe. The movable mold cold cavity is arranged on the outer layer of the movable mold cavity and is connected to the movable mold cold inlet pipe. The movable mold cold inlet pipe is connected to an external cooling source, thereby quickly cooling the molten material in the movable mold cavity.

[0011] Furthermore, the fixed mold also includes a fixed mold cold chamber and a fixed mold cold inlet pipe. The fixed mold cold chamber is placed on the outer layer of the fixed mold cavity and is connected to the fixed mold cold inlet pipe. The fixed mold cold inlet pipe is connected to an external cooling source, and finally the molten material in the fixed mold cavity is quickly cooled.

[0012] Furthermore, the cooling source is liquid nitrogen.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model arranges a movable mold injection tube at the center position of the top of the movable mold seat, arranges a fixed mold injection tube at the center position of the top of the fixed mold seat, and both the movable mold injection tube and the fixed mold injection tube are semicircular in structure and mutually form an injection port of a circular structure, so that the molten material injected through the injection port evenly enters the movable mold cavity and the fixed mold cavity, thereby improving the injection molding effect; and after the guide block is formed, the ejection parts are respectively connected to the movable mold cavity and the fixed mold cavity through the two sets of ejection components, and finally the guide block finished product is blanked, thereby avoiding that the guide block finished product is attached to the movable mold cavity or the fixed mold cavity to affect the blanking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the positions of the moving mold cold cavity and the fixed mold cold cavity;

[0017] Among them: 1. movable mold; 11. movable mold back plate; 12. movable mold seat; 13. movable mold injection tube; 14. movable mold cold chamber; 15. movable mold cold inlet pipe; 2. fixed mold; 21. fixed mold back plate; 22. fixed mold seat; 23. fixed mold injection tube; 24. fixed mold cold chamber; 25. fixed mold cold inlet pipe; 3. ejector assembly; 31. fixed plate; 32. truss; 33. telescopic cylinder; 34. ejector column. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The utility model is further described in combination with the drawings and embodiments:

[0019] See attached Figure 1 As shown, a guide block injection molding mold comprises a movable mold 1 and a fixed mold 2; the movable mold 1 comprises a movable mold back plate 11, a movable mold seat 12, a movable mold cavity and a movable mold injection tube 13; the fixed mold 2 comprises a fixed mold back plate 21, a fixed mold seat 22, a fixed mold cavity and a fixed mold injection tube 23; wherein, the movable mold injection tube 13 is arranged at the top center position of the movable mold seat 12, and the fixed mold injection tube 23 is arranged at the top center position of the fixed mold seat 22, the movable mold injection tube 13 and the fixed mold injection tube 23 are both semicircular structures and mutually form a circular injection port, so that the molten material injected through the injection port evenly enters the movable mold cavity and the fixed mold cavity; in addition, a guide block injection molding mold also comprises an ejector assembly 3, the ejector assembly 3 has two groups and is respectively connected to the movable mold 1 and the fixed mold 2, and the ejection parts of the two groups of ejector assemblies 3 are respectively connected to the movable mold cavity and the fixed mold cavity.

[0020] In the specific implementation process of the utility model, the ejector assembly 3 connected to the movable mold 1 is arranged on the moving structure, and the ejector assembly 3 connected to the fixed mold 2 is arranged on the fixed structure. The movable mold 1 is moved close to the fixed mold 2 through the operation of the moving structure, so that the movable mold cavity and the fixed mold cavity form a cavity consistent with the guide block structure, and then the molten material is injected into the cavity through the injection port. After the guide block is formed, the moving structure is operated to make the movable mold 1 away from the fixed mold 2 and reset. Finally, the two sets of ejector assemblies 3 are operated to respectively connect the ejection parts to the movable mold cavity and the fixed mold cavity, so that the guide block is finally finished.

[0021] Specifically, the ejection assembly 3 includes a fixed plate 31, a truss 32, a telescopic cylinder 33 and a ejector column 34; the fixed plate 31 is vertically arranged and the truss 32 is horizontally arranged thereon, wherein one group of trusses 32 of the ejection assembly 3 is connected to the movable mold back plate 11, and another group of trusses 32 of the ejection assembly 3 is connected to the fixed mold back plate 21, and a plurality of telescopic cylinders 33 are also arranged on the fixed plate 31, and each telescopic end of the telescopic cylinder 33 is connected to a ejector column 34, wherein one group of ejector columns 34 of the ejection assembly 3 passes through the movable mold back plate 11 and extends into the movable mold cavity, and another group of ejector columns 34 of the ejection assembly 3 passes through the fixed mold back plate 21 and extends into the fixed mold cavity.

[0022] In the above scheme, there are three telescopic cylinders 33 and they are evenly arranged on the fixed plate 31 so that the guide block finished product is ejected and discharged in a three-point manner, thereby improving the discharge effect. The telescopic cylinder 33 adopts one of the hydraulic cylinders, pneumatic cylinders or electric cylinders in the prior art.

[0023] In addition, considering the rapid cooling of the molten material after entering the cavity, Figure 2 As shown, the movable mold 1 also includes a movable mold cold cavity 14 and a movable mold cold inlet pipe 15. The movable mold cold cavity 14 is placed in the outer layer of the movable mold cavity and is connected to the movable mold cold inlet pipe 15. During the implementation of the scheme, the movable mold cold inlet pipe 15 is connected to an external liquid nitrogen cooling source to quickly cool the movable mold cold cavity 14, and finally the molten material in the movable mold cavity is quickly cooled; similarly, the fixed mold 2 also includes a fixed mold cold cavity 24 and a fixed mold cold inlet pipe 25. The fixed mold cold cavity 24 is placed in the outer layer of the fixed mold cavity and is connected to the fixed mold cold inlet pipe 25. During the implementation of the scheme, the fixed mold cold inlet pipe 25 is connected to an external liquid nitrogen cooling source to quickly cool the fixed mold cold cavity 24, and finally the molten material in the fixed and movable mold cavity is quickly cooled.

[0024] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A guide block injection molding mold, comprising a movable mold (1) and a fixed mold (2); the movable mold (1) comprises a movable mold back plate (11), a movable mold seat (12), a movable mold cavity and a movable mold injection tube (13); the fixed mold (2) comprises a fixed mold back plate (21), a fixed mold seat (22), a fixed mold cavity and a fixed mold injection tube (23); characterized in that: The movable mold injection tube (13) is arranged at the center position of the top of the movable mold base (12), and the fixed mold injection tube (23) is arranged at the center position of the top of the fixed mold base (22). The movable mold injection tube (13) and the fixed mold injection tube (23) are both semicircular structures and mutually form a circular injection port; and the ejection assembly (3) is also included. The ejection assembly (3) has two groups and is respectively connected to the movable mold (1) and the fixed mold (2), and the ejection parts of the two groups of ejection assemblies (3) are respectively connected to the movable mold cavity and the fixed mold cavity.

2. A guide block injection molding mold according to claim 1, characterized in that: The ejection assembly (3) comprises a fixed plate (31), a truss (32), a telescopic cylinder (33) and an ejector column (34); the fixed plate (31) is arranged vertically and the truss (32) is arranged horizontally thereon, wherein the truss (32) of one group of ejection assemblies (3) is connected to the movable die back plate (11), and the truss (32) of another group of ejection assemblies (3) is connected to the fixed die back plate (21); a plurality of telescopic cylinders (33) are also arranged on the fixed plate (31), and a telescopic end of each telescopic cylinder (33) is connected to an ejector column (34), wherein the ejector column (34) of one group of ejection assemblies (3) passes through the movable die back plate (11) and extends into the movable die cavity, and the ejector column (34) of another group of ejection assemblies (3) passes through the fixed die back plate (21) and extends into the fixed die cavity.

3. A guide block injection molding mold according to claim 2, characterized in that: There are three telescopic cylinders (33) which are evenly arranged on the fixing plate (31).

4. The guide block injection molding mold according to claim 2, characterized in that: The telescopic cylinder (33) is a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

5. The guide block injection molding mold according to claim 1, characterized in that: The movable mold (1) further comprises a movable mold cold cavity (14) and a movable mold cold inlet pipe (15); the movable mold cold cavity (14) is disposed on the outer layer of the movable mold cavity and is connected to the movable mold cold inlet pipe (15); the movable mold cold inlet pipe (15) is connected to an external cooling source.

6. The guide block injection molding mold according to claim 1, characterized in that: The fixed mold (2) further comprises a fixed mold cold cavity (24) and a fixed mold cold inlet pipe (25); the fixed mold cold cavity (24) is disposed on the outer layer of the fixed mold cavity and is connected to the fixed mold cold inlet pipe (25); the fixed mold cold inlet pipe (25) is connected to an external cooling source.

7. A guide block injection molding mold according to claim 5 or 6, characterized in that: The cooling source is liquid nitrogen.

Images