Plastic mold guide mechanism

Abstract

The utility model discloses a plastic mold guide mechanism which comprises a fixed mold base and a movable mold base, a fixed mold is fixedly installed on the end face, facing the movable mold base, of the fixed mold base, a movable mold frame is fixedly connected to the end face, facing the fixed mold base, of the movable mold base through a plurality of connecting columns, and two movable mold blocks are symmetrically arranged in the movable mold frame. According to the utility model, after the hydraulic cylinder is started to drive the connecting rod and the wedge-shaped block to move towards the direction far away from the fixed mold, the two movable mold blocks can be far away from each other under the action of the second spring, so that the distance between the two mold grooves is greater than the size of a molded injection molding part, and then the hydraulic cylinder continues to operate, so that the positioning pin is propped against one end of the positioning groove; therefore, the wedge-shaped block drives the two guide plates to be away from the fixed mold, the guide grooves and the guide strips are matched to enable the two movable molds to be away from the fixed mold, a formed injection molding part is located on the outer side of the mold groove, demolding of the injection molding part is facilitated, the overall structure is simple, operation is stable, only one hydraulic cylinder is needed for driving, and the using effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a plastic mold guiding mechanism. Background Art

[0002] Plastic molds are the abbreviation for modular molds used for compression molding, extrusion molding, injection molding, blow molding, and low-foaming molding. Through the coordinated changes of male and female molds and auxiliary molding systems, plastic molds can produce a range of plastic parts in different shapes and sizes.

[0003] like Figure 4 As shown, some special-shaped injection molded parts with complex structures usually have an annular groove 24 on the columnar body, and the end diameter of the columnar body is larger than the outer diameter of the annular groove 24. Therefore, during the mold design process, the columnar body needs to be split to achieve demolding of the injection molded part. At present, most plastic molds use multiple driving devices to drive each split mold when facing such annular grooves, resulting in an overly bloated mold structure, high production costs, and complicated mold control systems, which needs to be improved. Utility Model Content

[0004] The purpose of the present invention is to provide a plastic mold guide mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The cam frame has two opposite ends, and the two ends are connected with each other via a channel, and the channel is closed by a channel block, and the channel is closed by a channel block.

[0007] As a further scheme of the utility model: the both sides outer wall of wedge block is equipped with positioning slot, the outer wall of guide plate and the corresponding place of positioning slot are fixed and equipped with positioning pin, the positioning pin is located in the corresponding positioning slot, the both sides outer wall of movable module is all fixedly connected with guide strip, the outer wall of guide plate and the corresponding place of guide strip are all equipped with guide groove, the guide strip is located in the corresponding guide groove.

[0008] As a further scheme of the utility model: the opposite outer wall of two guide plates is commonly fixedly connected with connecting plate, the connecting plate is slidably equipped with guide rod, one end of guide rod is fixedly connected with connecting rod, and the outer wall of guide rod between connecting plate and connecting rod is equipped with first spring.

[0009] As a further scheme of the utility model: the both sides inner wall of movable die holder is all provided with a plurality of guide rails, and the wedge block and guide plate are all sleeved on the corresponding guide rail through the sliding groove.

[0010] As a further scheme of the utility model: the blind hole is equipped on the adhering surface of two movable modules, and the both ends of second spring are located in the corresponding blind hole.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] In the utility model, after the completion of injection molding, the connecting rod and wedge block are driven to move away from the fixed mold by starting the hydraulic cylinder, and then the two movable modules are driven to move away from each other by the second spring, so that the distance between the two mold grooves is greater than the size of the molded injection molding, and then the hydraulic cylinder continues to run, and the positioning pin is located at one end of the positioning slot, so that the wedge block drives the two guide plates to move away from the fixed mold, and the cooperation of the guide groove and guide strip makes the two movable molds move away from the fixed mold, so that the molded injection molding is located outside the mold groove, thereby facilitating demolding, the overall structure is simple, stable and only needs one hydraulic cylinder drive, and the use effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structure schematic view of a plastic mold guide mechanism.

[0014] Figure 2 It is a structure schematic view of a connecting plate in a plastic mold guide mechanism.

[0015] Figure 3 It is a sectional view structure schematic view of a movable module in a plastic mold guide mechanism.

[0016] Figure 4 It is a structure schematic view of an annular groove on a special-shaped workpiece.

[0017] Wherein, the fixed mold base 1, fixed mold 2, movable mold base 3, connecting column 4, movable mold frame 5, hydraulic cylinder 6, connecting rod 7, guide rail 8, wedge block 9, first inclined surface 10, positioning groove 11, guide plate 12, positioning pin 13, guide groove 14, guide rod 15, first spring 16, movable mold block 17, second inclined surface 18, guide strip 19, blind hole 20, second spring 21, mold groove 22, connecting plate 23, annular groove 24. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0019] Please refer to Figures 1-4 In the embodiments of the utility model, a plastic mold guiding mechanism comprises a fixed mold base 1 and a movable mold base 3, the end face of the fixed mold base 1 towards the movable mold base 3 is fixedly installed with a fixed mold 2, the end face of the movable mold base 3 towards the fixed mold base 1 is fixedly connected with a movable mold frame 5 through a plurality of connecting columns 4, two movable mold blocks 17 are symmetrically arranged in the movable mold frame 5, corresponding mold grooves 22 are formed on the abutting surfaces of the two movable mold blocks 17, a second spring 21 is arranged between the two movable mold blocks 17, a hydraulic cylinder 6 is fixedly connected to the outer wall of the movable mold frame 5 towards the movable mold base 3, a connecting rod 7 is fixedly connected to the push rod end of the hydraulic cylinder 6 after penetrating into the movable mold frame 5, two wedge blocks 9 are fixedly connected to the outer wall of the connecting rod 7 at both ends, the two movable mold blocks 17 are located between the two wedge blocks 9, a first inclined surface 10 is arranged on the outer wall of the wedge block 9, a second inclined surface 18 is arranged on the corresponding position of the outer wall of the movable mold block 17 and the first inclined surface 10, two guide plates 12 are slidingly connected in the movable mold frame 5, the wedge block 9 and the movable mold block 17 are both located between the two guide plates 12, and the movable mold block 17 and the wedge block 9 are both in transmission connection with the guide plate 12.

[0020] Further, the outer walls of the two sides of the wedge block 9 are both provided with positioning grooves 11, positioning pins 13 are fixedly and penetratingly arranged on the corresponding positions of the outer wall of the guide plate 12 and the positioning grooves 11, the positioning pins 13 are located in the corresponding positioning grooves 11, guide strips 19 are fixedly connected to the outer walls of the two sides of the movable mold block 17, guide grooves 14 are formed on the corresponding positions of the outer wall of the guide plate 12 and the guide strips 19, and the guide strips 19 are located in the corresponding guide grooves 14.

[0021] The utility model discloses a through adopt above -mentioned scheme, when using, after completing injection moulding, start hydraulic cylinder 6 drive connecting rod 7 and wedge block 9 remove to the direction of fixed mould 2 after, two movable moulds 17 will be far from each other under the action of second spring 21, to make the interval between two mould grooves 22 be greater than the size of the injection moulded part of forming, then hydraulic cylinder 6 continues to operate, will be positioning pin 13 and rest at one end of positioning groove 11, to drive two guide plates 12 away from fixed mould 2 by wedge block 9, to make two movable moulds 17 away from fixed mould 2 by the cooperation of guide groove 14 and guide strip 19, to make the injection moulded part of forming be at the outside of mould groove 22, to conveniently demould, the whole structure is simple, and stable operation, and only need one hydraulic cylinder drive, and the use effect is good.

[0022] Specifically combined Figures 1-3 In an embodiment of the utility model, the opposite outer walls of the two guide plates 12 are fixedly connected with a connecting plate 23, a guide rod 15 is slidably arranged on the connecting plate 23, one end of the guide rod 15 is fixedly connected with the connecting rod 7, and the outer wall of the guide rod 15 between the connecting plate 23 and the connecting rod 7 is sleeved with a first spring 16.

[0023] Through the arrangement of the connecting plate 23, the two guide plates 12 can be fixedly connected with each other, thereby improving the stability of the operation of the mold, and through the arrangement of the first spring 16, during the process that the hydraulic cylinder 6 just starts to drive the wedge groove 9 to move away from the fixed mold 2, since the positioning pin 13 does not contact the inner wall of one end of the positioning groove 11, the two guide plates 12 will be kept stationary in the movable mold frame 5 under the action of the first spring 16, so that the two movable mold modules 17 only move away from each other along the length direction of the guide groove 14 under the action of the second spring 21, and will not move away from the fixed mold 2 together with the connecting rod 7.

[0024] Specifically combined Figures 1-3 In an embodiment of the utility model, a plurality of guide rails 8 are arranged on the inner walls of the two sides of the movable mold frame 5, and the wedge block 9 and the guide plate 12 are sleeved on the corresponding guide rails 8 through the sliding grooves.

[0025] Through the cooperation of the guide groove 8 and the sliding groove, the wedge block 9 and the guide plate 12 can be guided in the movable mold frame 5, thereby improving the stability of the movement of the two.

[0026] Specifically combined Figure 3 In an embodiment of the utility model, blind holes 20 are formed on the abutting surfaces of the two movable mold modules 17, and the two ends of the second spring 21 are located in the corresponding blind holes 20.

[0027] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A plastic mold guide mechanism, characterized by: The invention comprises a fixed die base (1) and a movable die base (3), wherein the fixed die base (1) is fixedly mounted with a fixed die (2) on the end surface facing the movable die base (3), and the movable die base (3) is fixedly connected with a movable die frame (5) on the end surface facing the fixed die base (1) through a plurality of connecting columns (4), and two movable die blocks (17) are symmetrically arranged in the movable die frame (5), and corresponding mold grooves (22) are correspondingly opened on the fitting surfaces of the two movable die blocks (17), and a second spring (21) is arranged between the two movable die blocks (17), and the movable die frame (5) is fixedly connected with a hydraulic cylinder (6) on the outer wall facing the movable die base (3), and the push rod end of the hydraulic cylinder (6) penetrates the movable die frame (5). A connecting rod (7) is fixedly connected to the mold frame (5) at the rear, and two wedge blocks (9) are symmetrically fixedly connected at both ends of the outer wall of the connecting rod (7). The two movable modules (17) are located between the two wedge blocks (9). A first inclined surface (10) is provided on the outer wall of the wedge block (9), and a second inclined surface (18) is provided at the outer wall of the movable module (17) corresponding to the first inclined surface (10). Two guide plates (12) are slidably connected to the movable mold frame (5). The wedge block (9) and the movable module (17) are both located between the two guide plates (12), and the movable module (17) and the wedge block (9) are both transmission-connected to the guide plates (12).

2. A plastic mold guide mechanism according to claim 1, characterized in that: The outer walls on both sides of the wedge block (9) are provided with positioning grooves (11), and the outer wall of the guide plate (12) and the corresponding position of the positioning groove (11) are fixedly penetrated with positioning pins (13), and the positioning pins (13) are located in the corresponding positioning grooves (11). The outer walls on both sides of the movable module (17) are fixedly connected with guide bars (19), and the outer wall of the guide plate (12) and the corresponding position of the guide bar (19) are provided with guide grooves (14), and the guide bar (19) is located in the corresponding guide grooves (14).

3. The plastic mold guide mechanism according to claim 2, characterized in that: The opposite outer walls of the two guide plates (12) are fixedly connected to a connecting plate (23), a guide rod (15) is slidably passed through the connecting plate (23), one end of the guide rod (15) is fixedly connected to the connecting rod (7), and a first spring (16) is sleeved on the outer wall of the guide rod (15) located between the connecting plate (23) and the connecting rod (7).

4. The plastic mold guide mechanism according to claim 1, characterized in that: A plurality of guide rails (8) are provided on the inner walls of both sides of the movable mold frame (5), and the wedge blocks (9) and guide plates (12) are sleeved on the corresponding guide rails (8) through sliding grooves.

5. The plastic mold guide mechanism according to claim 1, characterized in that: Blind holes (20) are provided on the fitting surfaces of the two moving modules (17), and both ends of the second spring (21) are located in the corresponding blind holes (20).

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