Opening and closing guide mechanism of injection mold

Abstract

The utility model discloses an injection mold opening and closing guide mechanism which comprises a mold base, first positioning sleeves are fixed to the four corners of the upper end of the mold base, an upper mold base is arranged over the mold base, sliding sleeves are fixed to the four corners of the upper mold base, and a top plate is arranged over the upper mold base. A first positioning sleeve and a second positioning sleeve which are used for vertically positioning the upper end and the lower end of the guide column are arranged on the edge portion of the die base and the edge portion of the top plate, second positioning sleeves are fixed to the four corners of the bottom of the top plate, and the die further comprises guide columns which are arranged on the sliding sleeves in a vertically sliding and penetrating mode, and first springs are arranged on the lower portions of the outer sides of the guide columns in a sleeving mode. And meanwhile, the upper die base vertically slides on the guide columns through the sliding sleeves, the arranged first springs can form obvious buffering for the descending upper die mechanism, and the overall rigidity and operation stability of the guide mechanisms and the die frame are effectively improved through mutual cooperation.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is a kind of injection mold opening and closing guide mechanism. BACKGROUND

[0002] Injection mold is a kind of tool for plastic forming, by the molten state plastic injection into specific shape cavity, after cooling solidification, form the plastic product with the shape and size required, injection mold is widely used in electronic, automobile, household appliance, daily necessities and many other industries, is the key process equipment for realizing the large-scale production of plastic products.

[0003] In the injection mold use process, due to the upper die plate mechanism of injection mold total weight is larger, it can cause the micro-damage of mold when mold closing due to excessive pressure, easy to cause deviation after long time use, to affect processing forming, and the existing mold guide mechanism lacks corresponding buffer measure;In addition, since some injection materials (such as foaming type) have certain elastic shape and adhesion, this will bring some inconvenience to subsequent demolding. In order to solve the above problems, we provide an injection mold opening and closing guide mechanism. SUMMARY

[0004] This part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part and the abstract of the specification and the utility model name to avoid obscuring the purpose of this part, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] Therefore, the purpose of the utility model is to provide an injection mold opening and closing guide mechanism to solve the problem that the existing injection mold use process in the background art can cause the micro-damage of mold when mold closing due to excessive pressure, easy to cause deviation after long time use, to affect processing forming, and the existing mold guide mechanism lacks corresponding buffer measure, and there is the problem of difficult demolding.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: an injection mold opening and closing guide mechanism, which comprises a mold base, the upper end of the mold base is fixed with a first positioning sleeve at the four corner parts, the upper mold base is provided with an upper die seat, the upper die seat is fixed with a sliding sleeve at the four corner parts, the upper die seat is provided with a top plate, the bottom of the top plate is fixed with a second positioning sleeve at the four corner parts, and the guide column is slidably arranged in the sliding sleeve, the outer side of the guide column is provided with a spring one at the lower part, and the upper end of the spring one is abutted to the sliding sleeve and the lower end is abutted to the end of the first positioning sleeve, the lower end of the guide column is matched and inserted into the inner side of the first positioning sleeve, and the upper end is matched and inserted into the inner side of the second positioning sleeve;

[0007] The upper end of the mold base is fixedly installed with a lower mold, and the bottom of the upper mold base is fixedly installed with an upper mold. The bottom of the forming cavity of the lower mold has a settling groove and a top template fitted inside the settling groove. The mold base is also provided with a number of top mold unloading components for pushing the top template upward and lowering it downward.

[0008] As a preferred embodiment of the injection mold opening and closing guide mechanism of this utility model, the guide post has positioning screw holes at its lower and upper axial centers, the mold base has a first countersunk hole at its bottom that is perpendicular to the positioning screw holes, the top plate has a second countersunk hole at its upper part that is perpendicular to the positioning screw holes, and bolts are connected between the first countersunk hole, the second countersunk hole and the upper and lower positioning screw holes.

[0009] As a preferred embodiment of the injection mold opening and closing guide mechanism of this utility model, the lower mold is provided with positioning holes and slots at the four corners of the top, and the upper mold is fixed with positioning guide posts at the four corners of the bottom, which are vertically fitted and matched with the positioning holes and slots.

[0010] As a preferred embodiment of the injection mold opening and closing guide mechanism of this utility model, the mold base is provided with a plurality of mounting cylinder cavities corresponding to the top mold unloading assembly, and the bottom of the settling groove is provided with a plurality of clearance guide holes that are perpendicular to the mounting cylinder cavities.

[0011] The top mold unloading assembly includes a telescopic electric cylinder vertically fixed to the bottom of the inner side of the mounting cavity, a second spring vertically installed at the top output shaft end of the telescopic electric cylinder, a push rod vertically installed at the top of the second spring, and a linear motor installed at the top of the push rod and fixedly connected to the bottom of the top mold plate.

[0012] As a preferred embodiment of the injection mold opening and closing guide mechanism of this utility model, the upper mold has a cooling channel inside and near the edge of the lower mold, and the upper part of the upper mold is also provided with an inlet and an outlet corresponding to the inlet and outlet of the cooling channel.

[0013] As a preferred embodiment of the injection mold opening and closing guide mechanism of this utility model, a hydraulic rod is fixedly provided at the center of the top plate, and the bottom output shaft end of the hydraulic rod is connected to the top of the upper mold base.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (i) The opening and closing guide mechanism of this injection mold is provided with a first positioning sleeve and a second positioning sleeve for vertical positioning of the upper and lower ends of the guide column at the edge of the mold base and the top plate, and locked with bolts. At the same time, the upper mold base slides vertically on the guide column through the sliding sleeve, and the spring provided can form a significant buffer for the downward upper mold mechanism. The cooperation of these mechanisms effectively improves the overall rigidity and operational stability of the guide mechanism and the mold frame, prevents the mold from wearing and shifting after long-term use, and ensures the molding quality of the mold.

[0016] (ii) In this type of injection mold opening and closing guide mechanism, after the mold material in the lower mold is formed, the upper mold cools the mold material and then immediately detaches and rises. Subsequently, the telescopic electric cylinder will gradually lift the mold material through spring 2, ejector rod, linear motor and top platen. During this process, the top platen can generate high-frequency vibration and elastic push on the mold material. Compared with the hard pull method, the demolding is more linear and smooth, and will not cause scratches on the surface of the mold material. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0019] Figure 3 This utility model Figure 2 A magnified view of the structure at point A in the middle;

[0020] Figure 4 This is a schematic diagram of the top mold unloading assembly of this utility model.

[0021] In the diagram: 100, mold base; 1001, first countersunk hole; 1002, mounting cavity; 110, first positioning sleeve; 200, top plate; 2001, second countersunk hole; 210, second positioning sleeve; 300, guide post; 3001, positioning screw hole; 310, spring one; 400, upper mold base; 410, sliding sleeve; 500, bolt; 600, lower mold; 6001, settling groove; 6002, clearance guide hole; 6003, positioning hole groove; 610, top mold plate; 700, top mold unloading assembly; 710, telescopic electric cylinder; 720, spring two; 730, ejector rod; 740, linear motor; 800, upper mold; 810, positioning guide post; 820, cooling channel; 900, hydraulic rod. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] Figures 1-4 The diagram shown is a complete structural schematic of an injection mold opening and closing guide mechanism according to this utility model. Please refer to [link / reference]. Figures 1-4 This embodiment of an injection mold opening and closing guide mechanism includes a mold base 100, with first positioning sleeves 110 fixed at the four corners of the upper end of the mold base 100, an upper mold base 400 disposed directly above the mold base 100, sliding sleeves 410 fixed at the four corners of the upper mold base 400, a top plate 200 disposed directly above the upper mold base 400, and second positioning sleeves 210 fixed at the four corners of the bottom of the top plate 200. It also includes guide posts 300 that slide vertically through the sliding sleeves 410, with a spring 310 sleeved on the lower outer side of the guide post 300, and the upper end of the spring 310 abutting against the sliding sleeve 410. 10 Simultaneously, the lower end abuts against the end of the first positioning sleeve 110, the lower end of the guide post 300 is matched and inserted into the inner side of the first positioning sleeve 110, and the upper end is matched and inserted into the inner side of the second positioning sleeve 210; the upper end of the mold base 100 is fixedly installed with the lower mold 600, the bottom of the upper mold base 400 is fixedly installed with the upper mold 800, the bottom of the forming cavity of the lower mold 600 has a settling groove 6001 and a top template 610 fitted into the settling groove 6001, and the mold base 100 is also provided with a plurality of top mold unloading components 700 for pushing the top template 610 upward and downward.

[0026] The guide post 300 has positioning screw holes 3001 at its lower and upper axial positions. The bottom of the mold base 100 has a first countersunk hole 1001 perpendicular to the positioning screw holes 3001. The upper part of the top plate 200 has a second countersunk hole 2001 perpendicular to the positioning screw holes 3001. Bolts 500 connect the first countersunk hole 1001, the second countersunk hole 2001, and the upper and lower positioning screw holes 3001. It can be understood that the end of the guide post 300, the top plate 200, and the mold base 100 can be fixedly connected by the positioning screw holes 3001, the first countersunk hole 1001, the second countersunk hole 2001, and the bolts 500. The lower mold 600 has positioning slots 6003 at its top four corners, and the upper mold 800 has positioning guide posts 810 fixed at its bottom four corners, which are perpendicularly fitted and matched with the positioning slots 6003. The cooperation between the positioning slot 6003 and the positioning guide post 810 makes the mold closing between the upper mold 800 and the lower mold 600 more precise. Specifically, in this embodiment, a first positioning sleeve 110 and a second positioning sleeve 210 for vertical positioning of the upper and lower ends of the guide post 300 are provided at the edges of the mold base 100 and the top plate 200, and locked with the cooperation of bolts 500. At the same time, the upper mold base 400 slides vertically on the guide post 300 through the sliding sleeve 410, and the spring 310 can provide a significant buffer for the downward upper mold mechanism. The cooperation effectively improves the overall rigidity and operational stability of the guiding mechanism and the mold frame, prevents the mold from wearing and shifting after long-term use, and ensures the molding quality of the mold.

[0027] The mold base 100 has multiple mounting cavities 1002 corresponding to the top mold unloading assembly 700. The bottom of the settling tank 6001 has multiple clearance guide holes 6002 that perpendicularly penetrate the mounting cavities 1002. The top mold unloading assembly 700 includes a telescopic electric cylinder 710 vertically fixed to the bottom of the inner side of the mounting cavity 1002, a second spring 720 vertically mounted on the top output shaft end of the telescopic electric cylinder 710, a push rod 730 vertically mounted on the top of the second spring 720, and a linear motor 740 mounted on the top of the push rod 730 and fixedly connected to the bottom of the top mold plate 610. The upper mold 800 also has a cooling channel 820 inside and near the edge of the lower mold 600. The upper part of the upper mold 800 also has an inlet and an outlet corresponding to the inlet and outlet ends of the cooling channel 820. It is understandable that after the blank in the current mold 600 is formed, the rapidly flowing coolant in the cooling channel 820 can cool the molded material in time. After cooling, the surface of the molded material will also shrink accordingly, which is beneficial for subsequent demolding. A hydraulic rod 900 is also fixedly installed in the center of the top plate 200, and the bottom output shaft end of the hydraulic rod 900 is connected to the top of the upper mold base 400. Specifically, in this embodiment, after the molded material in the current mold 600 is formed, the upper mold 800 immediately detaches and rises after cooling the molded material. Then, the telescopic electric cylinder 710 will gradually lift the molded material through the spring 720, the ejector rod 730, the linear motor 740 and the top platen 610. During this process, the top platen 610 can generate high-frequency vibration and elastic pushing on the molded material. Compared with the hard pulling method, demolding is more linear and smooth, and will not cause scratches on the surface of the molded material.

[0028] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An injection mold opening and closing guide mechanism characterized by comprising: The utility model provides a mould base (100) is provided with the first positioning sleeve (110) on the upper end four corner parts, and the upper die holder (400) is arranged on the upper side of mould base (100), and the upper die holder (400) is fixed with the slide sleeve (410) on four corner parts, and the top plate (200) is arranged on the upper side of upper die holder (400), and the second positioning sleeve (210) is fixed on the bottom four corner parts of top plate (200), and the guide column (300) is slidably arranged in the slide sleeve (410), and the spring one (310) is arranged on the outside lower part of guide column (300), and the spring one (310) upper end abuts on the slide sleeve (410) while lower end abuts on the first positioning sleeve (110) end, and the guide column (300) lower end is matched and inserted in the inside of first positioning sleeve (110) and upper end is matched and inserted in the inside of second positioning sleeve (210); The lower die (600) is fixedly installed on the upper end of mould base (100), the upper die (800) is fixedly installed on the bottom of upper die holder (400), the lower die (600) is provided with the settling groove (6001) on the inside bottom of forming cavity and the top die plate (610) is embedded in the inside of settling groove (6001), and the mould base (100) is further provided with a plurality of top die ejection assemblies (700) for upward pushing and descending of top die plate (610).

2. An injection mold opening and closing guide mechanism according to claim 1, characterized in that: The positioning screw hole (3001) is formed on the lower end and upper end axis of guide column (300), the first countersunk hole (1001) is formed on the bottom of mould base (100) and vertically corresponds with the positioning screw hole (3001), the second countersunk hole (2001) is formed on the upper part of top plate (200) and vertically corresponds with the positioning screw hole (3001), and the bolt (500) is connected between the first countersunk hole (1001), the second countersunk hole (2001) and the upper and lower positioning screw hole (3001).

3. The injection mold opening and closing guide mechanism according to claim 1, characterized in that: The positioning hole groove (6003) is arranged on the top four corner parts of lower die (600), and the positioning guide column (810) is fixed on the bottom four corner parts of upper die (800) and vertically embedded and matched with the positioning hole groove (6003).

4. The injection mold opening and closing guide mechanism of claim 1 wherein: The mould base (100) is provided with a plurality of installation cylinder cavities (1002) corresponding to the top die ejection assembly (700), and a plurality of avoidance guide holes (6002) vertically penetrating through the installation cylinder cavities (1002) are formed on the bottom of settling groove (6001). The top die ejection assembly (700) comprises the telescopic electric cylinder (710) vertically fixed on the inside bottom of installation cylinder cavity (1002), the spring two (720) vertically installed on the output shaft end of telescopic electric cylinder (710) top, the top rod (730) vertically installed on the top of spring two (720), and the linear motor (740) installed on the top of top rod (730) and fixedly connected with the bottom of top die plate (610).

5. An injection mold opening and closing guide mechanism according to claim 1, characterized in that: The upper die (800) is internally provided with a cooling flow channel (820) near the edge of the lower die (600), and the upper die (800) is further provided with a liquid inlet and a liquid outlet corresponding to the inlet and outlet ends of the cooling flow channel (820) respectively.

6. An injection mold opening and closing guide mechanism according to claim 1, characterized in that: The hydraulic rod (900) is fixedly arranged at the center of the top plate (200), and the bottom output shaft end of the hydraulic rod (900) is connected to the top of the upper die holder (400).

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