CN216127621U - Positioning structure of steel sheet of moulding plastics in mould - Google Patents

Abstract

The utility model relates to the technical field of injection molding equipment, in particular to a positioning structure for an in-mold injection molding steel sheet, which comprises a movable mold and a fixed mold, wherein a positioning needle assembly used for positioning and fixing the steel sheet is arranged on the fixed mold, and a push rod assembly matched with the positioning needle assembly is fixedly connected to the movable mold.

Description

Positioning structure of steel sheet of moulding plastics in mould

Technical Field

The utility model relates to the technical field of injection molding equipment, in particular to a positioning structure of an in-mold injection molding steel sheet.

Background

With the continuous development of industry, the requirements of products are higher and higher, the market demand of ultrathin mobile phones is more and more day by day, and therefore the thin glue position of some small-sized products cannot reach a more ideal state and is difficult to fill glue, so that the steel sheet in-mold injection molding becomes mainstream under the condition.

In the prior art, the following problems exist:

(1) when a steel sheet with a small area is subjected to injection molding, the traditional positioning needle can position the steel sheet, but on one hand, the traditional positioning needle cannot eject the steel sheet out after the injection molding is finished, so that the use is troublesome, and particularly, the steel sheet after the injection molding is high in temperature and cannot be taken out in a hand and magnetic attraction mode;

(2) the existing injection molding positioning structure is lack of further fixation on the steel sheet during injection molding, so that the steel sheet is easy to loosen, and the injection molding effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a positioning structure of an in-mold injection molding steel sheet, which aims to solve the problems in the background technology.

The technical scheme of the utility model is as follows: a positioning structure of an in-mold injection molding steel sheet comprises a movable mold and a fixed mold, wherein a positioning needle assembly used for positioning and fixing the steel sheet is arranged on the fixed mold, and a push rod assembly matched with the positioning needle assembly is fixedly connected to the movable mold;

the locating needle assembly comprises a base, the blind hole is formed in the upper surface of the fixed die, the base is in sliding connection with the inner wall of the blind hole, a limiting block is fixedly connected to the inner wall of the blind hole and abuts against the base, a round tube is fixedly connected to the upper end of the base, a silicone tube is fixedly connected to the upper end of the round tube, a needle tube is fixedly connected to the upper end of the silicone tube, and an opening surrounding the blind hole is formed in the upper end of the needle tube.

Preferably, the push rod assembly comprises a round sleeve, the round sleeve is fixedly connected with the inner wall of the moving die, the inner wall of the upper end of the round sleeve is fixedly connected with an ejector rod, and the lower end of the ejector rod is fixedly connected with a spherical clamping block.

Preferably, the inner wall of the upper end of the needle tube is fixedly connected with a plurality of conical clamping blocks which are arranged in a surrounding mode, and the upper surface and the lower surface of each conical clamping block are cambered surfaces.

Preferably, the upper surface of the fixed die is provided with a counter bore, and the side wall of the base is sleeved with a baffle matched with the counter bore.

Preferably, the silicone tube is provided with a supporting rod, two ends of the supporting rod are fixedly connected with the circular tube and the needle tube, and the side wall of the spherical clamping block is provided with a yielding groove matched with the supporting rod.

Preferably, the outer diameter of the upper end of the needle tube is smaller than that of the lower end of the needle tube.

Preferably, the silicone tube is made of a high-temperature-resistant silicone material prepared from phenyl silicone rubber, fumed silica and a high-temperature-resistant auxiliary agent.

The utility model provides a positioning structure of an in-mold injection molding steel sheet by improving, compared with the prior art, the positioning structure has the following improvements and advantages:

one is as follows: according to the utility model, the positioning needle assembly is arranged to be matched with the push rod assembly, the round tube is matched with the needle tube to position the steel sheet, and the spherical clamping block is utilized to drive the silicone tube to deform when the mold is closed, so that the steel sheet is further clamped, the steel sheet cannot displace during injection molding, and in the mold opening process after injection molding is finished, the spherical opening drives the positioning needle assembly to move upwards, so that the steel sheet after injection molding can be pushed out, the injection molding effect is improved, meanwhile, a user can conveniently take and place the steel sheet, and the working efficiency is improved;

the second step is as follows: the counter bore is matched with the baffle plate to serve as a protection device, so that glue liquid is prevented from entering the blind hole when a mold is damaged or a worker is in error in operation, the positioning needle assembly is damaged, and the mold and the positioning assembly are effectively protected.

Drawings

The utility model is further explained below with reference to the figures and examples:

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic cross-sectional structural view of the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 2;

FIG. 4 is a partial cross-sectional view of portion B of FIG. 2;

FIG. 5 is a schematic view of the positioning needle assembly of the present invention.

Description of reference numerals:

1. moving the mold; 2. fixing a mold; 3. positioning a needle assembly; 4. a push rod assembly; 31. a base; 32. blind holes; 33. a limiting block; 34. a circular tube; 35. a silicone tube; 36. a needle tube; 37. an opening; 41. a round sleeve; 42. a top rod; 43. a spherical fixture block; 5. a conical fixture block; 6. a counter bore; 7. a baffle plate; 8. a support rod.

Detailed Description

The present invention is described in detail below, and technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a positioning structure of an in-mold injection molding steel sheet through improvement, and the technical scheme of the utility model is as follows:

example (b):

as shown in fig. 1-5, a positioning structure for an in-mold injection molding steel sheet comprises a moving mold 1 and a fixed mold 2, wherein a positioning needle assembly 3 for positioning and fixing the steel sheet is arranged on the fixed mold 2, and a push rod assembly 4 matched with the positioning needle assembly 3 is fixedly connected to the moving mold 1;

further, positioning pin subassembly 3 includes base 31, blind hole 32 has been seted up to the upper surface of fixed mould 2, base 31 sets up with the inner wall sliding connection of blind hole 32, and base 31 is interference fit with the inner wall of blind hole 32, can be when positioning pin subassembly 3 ejecting steel sheet, utilize the frictional force of base 31 and blind hole 32 inner wall to avoid base 31 whereabouts once more, make the steel sheet paste tightly with the inner wall of fixed mould 2 once more, the inner wall fixedly connected with stopper 33 of blind hole 32, and stopper 33 offsets with base 31 and set up, the upper end fixedly connected with pipe 34 of base 31, the upper end fixedly connected with silicone tube 35 of pipe 34, and the upper end fixedly connected with needle tubing 36 of silicone tube 35, opening 37 around setting is seted up to the upper end of needle tubing 36, opening 37 is used for guaranteeing that push rod 36 is when needle subassembly 4 inserts, can outwards expand, let a position for push rod subassembly 4.

Further, push rod assembly 4 includes circle cover 41, circle cover 41 sets up with the inner wall fixed connection of moving die 1, the upper end inner wall fixedly connected with ejector pin 42 of circle cover 41, and the lower extreme fixedly connected with spherical fixture block 43 of ejector pin 42, circle cover 41 is used for protecting needle tubing 36, avoid moulding plastics and make the glue solution get into opening 37, on the other hand, receive material and intensity restriction, guarantee high strength and durable condition at circle cover 41, need increase the wall thickness of circle cover 41, so directly fix the steel sheet with the oppression of circle cover 41 on the steel sheet, will lead to near locating hole of steel sheet to lack the glue, influence the effect of moulding plastics, adopt location needle subassembly 3 further to fix the steel sheet.

Further, the inner wall of the upper end of the needle tube 36 is fixedly connected with a plurality of conical fixture blocks 5 which are arranged in a surrounding manner, the upper surface and the lower surface of each conical fixture block 5 are cambered surfaces, and the conical fixture blocks 5 with the upper surface and the lower surface being cambered surfaces are arranged, so that the spherical fixture blocks 43 can be conveniently inserted into the needle tube 36 when the mold is closed, and the spherical fixture blocks 43 can drive the positioning needle assembly 3 to move upwards when the mold is opened, thereby ensuring that the positioning needle assembly 3 can eject a steel sheet.

Further, counter bore 6 has been seted up to the upper surface that the fixed mould 2 is close to the blind hole 32, and the lateral wall cover of base 31 is equipped with baffle 7 that matches with counter bore 6, sets up counter bore 6 cooperation baffle 7 for as safeties, avoid the mould to damage or when the operation is out of order (for example do not put into the steel sheet and just mould plastics), lead to the glue solution to get into blind hole 32, make locating needle subassembly 3 damage.

Further, the silicone tube 35 be provided with bracing piece 8, the both ends of bracing piece 8 and pipe 34 and needle tubing 36 fixed connection set up, the groove of stepping down that matches with bracing piece 8 is seted up to the lateral wall of spherical fixture block 43, this kind of design utilizes bracing piece 8 to guarantee that silicone tube 35 is when fixed steel sheet, is because the drive of spherical fixture block 43 and outwards expand slightly, but rather than pressing on the steel sheet after silicone tube 35 is shriveled for guarantee the covering rate on steel sheet surface.

Furthermore, the outer diameter of the upper end of the needle tube 36 is smaller than the outer diameter of the lower end of the needle tube 36, the needle tube 36 with the thin upper end and the thick lower end facilitates a user to place a steel sheet, and the difficulty of the user in aligning the positioning hole in the steel sheet with the needle tube 36 is reduced.

Further, the silicone tube 35 is made of a high temperature resistant silicone material made of phenyl silicone rubber, fumed silica and a high temperature resistant additive, the injection molding temperature is generally 150-.

The working principle is as follows: when injection molding is carried out, firstly, a steel sheet is placed in a fixed mold 2, then, a positioning needle assembly 3 penetrates through the steel sheet to realize the positioning of the steel sheet, then, a user controls an injection molding device to mold, a movable mold 1 drives a push rod assembly 4 to move towards the positioning needle assembly 3, after a spherical fixture block 43 is abutted against the upper end of a needle tube 36, a base 31 is firstly driven to move downwards until the base 31 is abutted against a limiting block 33, then the spherical fixture block 43 is inserted into the needle tube 36 and continues to move downwards until the spherical fixture block 43 is inserted into a silicone tube 35, so that the silicone tube 35 is driven to expand outwards (in the working process, the thermal expansion of the silicone tube 35 can further compress the steel sheet, the silicone tube 35 has certain elasticity and cannot cause deformation of the steel sheet), further fixing of the steel sheet is realized, then, a glue solution is injected into a mold by a tube on the movable mold 1 to finish injection molding operation, after the injection molding operation is finished, user control injection moulding device die sinking, utilize the frictional force of spherical fixture block 43 and silicone tube 35 and 36 inner walls of needle tubing this moment, perhaps by the effort of spherical fixture block 43 and toper fixture block 5, drive the upward movement of positioning needle subassembly 3, thereby realized with the ejecting purpose of steel sheet, this kind of positioning mechanism can convenience of customers mould plastics and get and put the steel sheet, and utilize positioning needle subassembly 3 to improve the fixed effect to the steel sheet, the problem that exists among the prior art has been solved, and simple structure, equipment cost is low, need not extra drive arrangement, it is comparatively convenient to use.

The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The utility model provides a location structure of steel sheet of moulding plastics in mould, includes movable mould (1) and fixed mould (2), its characterized in that: a positioning needle assembly (3) for positioning and fixing the steel sheet is arranged on the fixed die (2), and a push rod assembly (4) matched with the positioning needle assembly (3) is fixedly connected to the movable die (1);

locating pin subassembly (3) include base (31), blind hole (32) have been seted up to the upper surface of fixed mould (2), and base (31) set up with the inner wall sliding connection of blind hole (32), the inner wall fixedly connected with stopper (33) of blind hole (32), and stopper (33) offset the setting with base (31), the upper end fixedly connected with pipe (34) of base (31), the upper end fixedly connected with silicone tube (35) of pipe (34), and the upper end fixedly connected with needle tubing (36) of silicone tube (35), opening (37) around the setting are seted up to the upper end of needle tubing (36).

2. The positioning structure of the in-mold injection-molded steel sheet according to claim 1, wherein: push rod subassembly (4) are including circle cover (41), circle cover (41) set up with the inner wall fixed connection who moves mould (1), the upper end inner wall fixedly connected with ejector pin (42) of circle cover (41), and the lower extreme fixedly connected with spherical fixture block (43) of ejector pin (42).

3. The positioning structure of the in-mold injection-molded steel sheet according to claim 1, wherein: the inner wall of the upper end of the needle tube (36) is fixedly connected with a plurality of conical clamping blocks (5) which are arranged in a surrounding mode, and the upper surface and the lower surface of each conical clamping block (5) are cambered surfaces.

4. The positioning structure of the in-mold injection-molded steel sheet according to claim 1, wherein: the upper surface of the fixed die (2) is provided with a counter bore (6), and the side wall of the base (31) is sleeved with a baffle (7) matched with the counter bore (6).

5. The positioning structure of the steel sheet in the mold according to claim 2, wherein: the silicone tube (35) is provided with a support rod (8), two ends of the support rod (8) are fixedly connected with the round tube (34) and the needle tube (36), and the side wall of the spherical clamping block (43) is provided with a yielding groove matched with the support rod (8).

6. The positioning structure of the in-mold injection-molded steel sheet according to claim 1, wherein: the outer diameter of the upper end of the needle tube (36) is smaller than the outer diameter of the lower end of the needle tube (36).

7. The positioning structure of the in-mold injection-molded steel sheet according to claim 1, wherein: the silicone tube (35) is made of high-temperature-resistant silicone rubber material prepared from phenyl silicone rubber, fumed silica and high-temperature-resistant auxiliary agent.

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