CN213321472U

CN213321472U - Sliding positioning device for injection molding of slender products

Info

Publication number: CN213321472U
Application number: CN202021782360.9U
Authority: CN
Inventors: 周钟; 张华�; 张彬彬
Original assignee: Hi-P(shanghai)precision Mold&die Co ltd
Current assignee: Hi-P(shanghai)precision Mold&die Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-06-01
Anticipated expiration: 2030-08-24

Abstract

The utility model relates to the technical field of semi-closed slender hollow plastic molds, in particular to a sliding positioning device for injection molding of slender products, wherein a first driving mechanism is used for driving a screw rod to rotate, so that a driving block moves along the screw rod; the driving block is connected with the first sliding block seat, the first sliding block seat is connected with the positioning and forming sliding block, and the positioning and forming sliding block is used for positioning the injection mold core. The utility model provides a slide positioning device for slender products are moulded plastics enables the product precision of accomplishing of moulding plastics higher, and its advantage includes but is not limited to: the injection product is formed in one step without changing the product structure or increasing the post-processing procedure; the wall thickness of the product is ensured to be uniform through the sliding positioning in the injection molding process; in the injection molding process, a screw rod is driven by a servo motor to accurately control the position of a positioning molding slide block; through the design of mechanical transmission and locking structure, production stability has been guaranteed.

Description

Sliding positioning device for injection molding of slender products

Technical Field

The utility model relates to a semi-closed slim type cavity plastic mould technical field is a sliding positioning device who is used for long and thin product to mould plastics particularly.

Background

In the mold industry, the requirements for the size of the inner appearance and the wall thickness of a conventional elongated hollow semi-closed product are not very high, because the elongated core for injection molding the elongated product is too long and difficult to position in the molding process of the product, so that the deformation or warpage of the elongated core in the injection molding process cannot be controlled, the wall thickness of the product is uneven, and the hollow inner wall of the product is also scratched or scratched when the product is removed from the mold. For some products with higher requirements on the inner appearance surface and the wall thickness of the product, the conventional method generally adopts the mode of changing the product structure and increasing the positioning of a core to enable the product size to reach the requirements. However, for some special products, the product structure cannot be changed, and the requirement of high precision needs to be met. Therefore, a new device is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve prior art's not enough, provide a slide positioning device for long and thin product is moulded plastics, realize the location to the mould plastics core of product under the condition that does not change the product structure.

In order to achieve the purpose, the sliding positioning device for injection molding of the elongated product comprises an injection molding core, a first driving mechanism, a driving screw rod mechanism, a first slider seat and a positioning forming slider, wherein the driving screw rod mechanism comprises a screw rod and a driving block which are meshed with each other, and the first driving mechanism is used for driving the screw rod to rotate so as to enable the driving block to move along the screw rod; the driving block is connected with the first sliding block seat, the first sliding block seat is connected with the positioning and forming sliding block, and the positioning and forming sliding block is used for positioning the injection mold core.

The utility model discloses still have following preferred technical scheme:

the sliding positioning device for injection molding of the elongated product further comprises a first connecting block, wherein the first connecting block is connected with the driving block and is connected with the first sliding block seat through a connecting piece.

Two connecting pieces are symmetrically arranged between the first connecting block and the first sliding block seat.

The screw rod penetrates through the first connecting block and then is connected to a screw rod positioning block.

One end of the screw rod is connected with the first driving mechanism, and the other end of the screw rod is connected with the screw rod positioning block.

The first driving mechanism is connected with the screw rod through a second connecting block.

The outer end of the positioning forming slide block extends to the outer side of the first slide block seat to be used for abutting against the injection mold core.

The injection molding core is arranged opposite to the positioning and forming sliding block and is connected with the second driving mechanism so as to move back and forth relative to the positioning and forming sliding block under the driving of the second driving mechanism.

The injection molding core is arranged in the second sliding block seat, the second sliding block seat is connected with the sliding block seat driving block, the sliding block seat driving block is connected with the second driving mechanism and can drive the second sliding block seat and the injection molding core to move under the driving of the second driving mechanism, a notch is formed in the sliding block seat driving block, a retraction lock is arranged corresponding to the notch, and the retraction lock can be driven by a power mechanism to realize and remove the matching with the notch.

The slider seat driving block is arranged at the lower side of the second driving mechanism and is connected with the driving end of the second driving mechanism through a driving connecting block, and a limiting block is further arranged corresponding to the movement stroke of the slider seat driving block.

Beneficial effects of the utility model

The utility model provides a slide positioning device for slender products are moulded plastics enables the product precision of accomplishing of moulding plastics higher, and its advantage includes but is not limited to:

1. the injection product is formed in one step without changing the product structure or increasing the post-processing procedure.

2. Through the sliding positioning in the injection molding process, the uniform wall thickness of the product is ensured.

3. In the injection molding process, the servo motor drives the screw rod to accurately control the position of the positioning molding slide block.

4. Through the design of mechanical transmission and locking structure, production stability has been guaranteed.

Drawings

Fig. 1 illustrates a schematic structural diagram of a positioning forming slide block part of the present invention.

Fig. 2 shows a schematic view of the direction a-a of fig. 1.

Fig. 3 exemplarily shows a structural schematic diagram of the driving screw mechanism of the present invention.

Fig. 4 schematically shows a connection diagram 1 of the drive screw mechanism of the present invention.

Fig. 5 schematically shows a connection diagram 2 of the drive screw mechanism of the present invention.

Fig. 6 shows an exemplary structural view of the injection core part according to the invention.

Fig. 7 shows a schematic view of the direction B-B of fig. 6.

Fig. 8 shows an exemplary usage diagram 1 of the present invention.

Fig. 9 shows an exemplary usage diagram 2 of the present invention.

Fig. 10 shows an exemplary usage diagram 3 of the present invention.

In the figure: 1. the servo motor 2, the second lead screw positioning block 3, the driving lead screw mechanism 3-1, the lead screw 3-2, the driving block 4, the first lead screw positioning block 5, the first limiting block 6, the positioning forming slide block 7, the first slide block seat 8, the servo motor positioning block 9, the second connecting block 10, the injection mold core 11, the second slide block seat 12, the long-distance driving oil cylinder 13, the driving connecting block 14, the slide block seat driving block 15, the second limiting block 16, the retraction lock 17, the retraction lock driving oil cylinder 18, the fixing block 19, the first connecting block 20 and the connecting piece.

Detailed Description

The embodiment provides a sliding positioning device for injection molding of a slender product, which mainly comprises a first driving mechanism, a driving screw rod mechanism 3, a first slider seat 7, a positioning forming slider 6, an injection mold core 10, a second slider seat 11, a second driving mechanism and the like, and the components are further exemplified by the following figures.

Referring to fig. 3, the driving screw mechanism 3 includes a screw 3-1 and a driving block 3-2 engaged with each other by a screw thread, as shown in fig. 4 and 5, the driving block 3-2 is connected and fixed with a first connecting block 19, the first connecting block 19 is connected and fixed with a first slide holder 7 by a connecting piece 20, and a positioning and forming slide 6 for positioning an injection mold core 10 of an elongated product is provided on the first slide holder 7, for example, the positioning and forming slide 6 is fixed on the slide holder by a fixing block 18. In one embodiment, two left and right connecting pieces 20 are symmetrically arranged between the first connecting block 19 and the first slider seat 7, and the driving block 3-2, the first connecting block 19, the first slider seat 7 and the positioning and forming slider 6 can move synchronously. Therefore, the positioning forming slide block 6 is driven to move in the injection molding process, the injection molding core 10 of the slender product is positioned in the injection molding process, and the positioning forming slide block 6 is withdrawn when the tail end of the closed product is close to the injection molding process, so that the appearance characteristic of the closed product is formed.

In one embodiment, the first connecting block 19 is provided with a through hole corresponding to the screw rod 3-1, the right end of the screw rod 3-1 penetrates through the through hole of the first connecting block 19 from left to right and extends to the right side of the first connecting block 19, and a fixed first screw rod positioning block 4 is further connected to the right end of the screw rod 3-1. In addition, a fixed second screw rod positioning block 2 can be arranged at the position close to the left end of the screw rod 3-1 so as to position and fix the screw rod 3-1.

Referring to fig. 1 and 2, the output end of the first driving mechanism, such as the servo motor 1, is connected to the second connecting block 9, and is connected to the left end of the screw rod 3-1 through the second connecting block 9, so that the first driving mechanism can drive the screw rod 3-1 to synchronously rotate, further, when the screw rod 3-1 rotates, the driving block 3-2 can move back and forth along the screw rod 3-1, and the first connecting block 19, the first slider seat 7 and the positioning and forming slider 6 can synchronously move back and forth. In addition, a servo motor positioning block 8 is provided at a position corresponding to the servo motor 1, so as to position the mounting position of the servo motor 1.

In addition, as shown in fig. 1, in one embodiment, the second screw rod positioning block 2 is provided at an outer end surface of the second connecting block 9 to position and fix the screw rod 3-1.

In addition, corresponding to the movement stroke of the first slider seat 7, a first limit block 5 is further arranged on the upper side of the first slider seat 7 to limit the movement stroke of the first slider seat 7, and when the first slider seat 7 moves in place, the first limit block 5 can block and limit the movement stroke.

In one embodiment, the outer end of the positioning and forming slide 6 extends to the outside of the first slide seat 7, so that under the driving action of the driving block 3-2, the positioning and forming slide 6 can abut against the injection mold core 10, thereby positioning the injection mold core 10.

Further, as shown in fig. 6 and 7, the injection core 10 is disposed opposite to the positioning and forming slide 6, and the injection core 10 is connected to a second driving mechanism to move back and forth relative to the positioning and forming slide 6 under the driving of the second driving mechanism, so as to complete the injection operation.

For example, in one embodiment, the left side of the injection core 10 is relatively provided with the positioning and molding slider 6, the injection core 10 is disposed in the second slider seat 11, the rear side of the second slider seat 11 is connected to the slider seat driving block 14, the second driving mechanism is disposed on the upper side of the slider seat driving block 14, the right end of the slider seat driving block 14 is connected to the driving end of the right end of the second driving mechanism through the driving connection block 13, the slider seat driving block 14 can drive the second slider seat 11 and the injection core 10 to move back and forth under the driving of the second driving mechanism, and the mechanism arrangement can be more compact through the connection manner of the present embodiment.

In a preferred embodiment, the slider seat driving block 14 is further provided with a notch, a retraction lock 16 is arranged corresponding to the lower side of the notch, the retraction lock 16 is connected with a retraction driving oil cylinder 17 serving as a power mechanism, the retraction lock 16 can move up and down under the driving of the retraction driving oil cylinder 17, so that the cooperation between the retraction lock 16 and the notch is realized and released, when the retraction lock 16 is matched with the notch, the slider seat driving block 14 can be prevented from being pressed to retract, so that the slider seat driving block can be matched and positioned with the positioning forming slider 6 in the injection molding process, the wall thickness of a product is ensured to be uniform, and the product is prevented from being pulled. In addition, a second limiting block 15 is arranged on the upper side of the sliding seat driving block 3-2 corresponding to the moving stroke of the sliding seat driving block 14 so as to limit the moving stroke.

Examples

The embodiment of the invention, with reference to fig. 8 to fig. 10, illustrates a specific working principle of the sliding positioning device for injection molding of an elongated product, and the use steps thereof are as follows:

1. after the mold is closed, injection molding is started, and when the product is injected to about 80%, the servo motor 11 starts to rotate.

2. The screw rod 3-1 is driven to rotate by the servo motor 1 and the second connecting block 9.

3. The screw rod 3-1 drives the first sliding block seat 7 and the positioning forming sliding block 6 to move to the left side when rotating.

4. After the first slider seat 7 and the positioning forming slider 6 move 3.5mm to the left side, the first limiting block 5 is touched and the movement is stopped.

5. And finally, filling the space for withdrawing the positioning and molding slide block 6 with the plastic to finish the closed injection molding of the product.

6. After the injection molding is finished, the mold is opened, the retraction driving oil cylinder 17 moves downwards for 29.0mm, and the retraction lock 16 is driven to move downwards and retract to the lower part of the slide block seat driving block 14 to be separated from the matching with the notch.

7. The long-distance driving oil cylinder 12 moves rightwards to eject 162.0mm, and drives the slider seat driving block 14, the second slider seat 11 and the injection mold core 10 to move rightwards synchronously through the driving connecting block 13.

8. The slider holder driving block 14 stops after moving to the position of the second limit block 15.

9. And taking out the product, resetting all moving parts, repeating the actions of the mechanisms from 1 to 7, and carrying out mass production on the product.

The above, only for the concrete implementation of this utility model, but the scope of protection of this utility model is not limited to this, and any person skilled in this technical field is in the technical scope of this utility model discloses, according to the technical scheme of this utility model and novel design add in equal replacement or change, all should be covered in the scope of protection of this utility model.

Claims

1. A sliding positioning device for injection molding of a slender product comprises an injection molding core, and is characterized by further comprising a first driving mechanism, a driving screw rod mechanism, a first slide block seat and a positioning forming slide block,

the driving screw rod mechanism comprises a screw rod and a driving block which are meshed with each other, and the first driving mechanism is used for driving the screw rod to rotate so as to enable the driving block to move along the screw rod;

the driving block is connected with the first sliding block seat, the first sliding block seat is connected with the positioning and forming sliding block, and the positioning and forming sliding block is used for positioning the injection mold core.

2. The sliding positioning apparatus for elongated product injection molding of claim 1 further comprising a first connecting block, said first connecting block being connected to said drive block and said first connecting block being connected to said first slide block receptacle by a connecting member.

3. The sliding positioning apparatus for elongated product injection molding of claim 2 wherein two of said connecting members are symmetrically disposed between said first connecting block and said first slider seat.

4. The slide positioning apparatus for injection molding of elongated products of claim 2 wherein said screw rod is connected to a screw rod positioning block after passing through said first connecting block.

5. The slide positioning apparatus for injection molding of elongated products as claimed in any one of claims 1 to 4, wherein said screw has one end connected to said first driving mechanism and the other end connected to a screw positioning block.

6. A slide positioning device for injection moulding of elongated products according to any of claims 1-4, characterised in that said first driving means are connected to said screw by means of a second connecting block.

7. A slide positioning device for injection moulding of elongate products as claimed in any of claims 1 to 4, wherein the outer ends of said positioning profiled slide extend outside said first slide seat for abutment against the injection moulding core.

8. A slide positioning device for injection moulding of elongated products according to any of claims 1-4, characterised in that said injection core is positioned opposite said positioning and shaping slide and said injection core is connected to a second drive mechanism for forward and backward movement relative to said positioning and shaping slide under the drive of the second drive mechanism.

9. The sliding positioning apparatus for elongated product injection molding according to claim 8, wherein the injection mold core is disposed in a second slider holder, the second slider holder is connected to a slider holder driving block, the slider holder driving block is connected to a second driving mechanism and can drive the second slider holder and the injection mold core to move under the driving of the second driving mechanism, the slider holder driving block is provided with a notch, and a retraction lock is disposed corresponding to the notch, and the retraction lock can be driven by a power mechanism to realize and release the engagement with the notch.

10. The slide positioning apparatus for elongated product injection molding according to claim 9, wherein said slider holder driving block is disposed at a lower side of said second driving mechanism, said slider holder driving block is connected to a driving end of said second driving mechanism through a driving connecting block, and a stopper is provided corresponding to a moving stroke of said slider holder driving block.