A floating insert fixing structure

Abstract

A floating insert fixing structure belongs to the field of injection mold technology. It includes a female mold, a male mold, and a male mold platen. A through groove is formed in the female mold, and a female mold insert is placed within the groove. A front mold core is located at the lower part of the female mold insert, forming a product molding space between it and the rear mold core on the male mold. A set of floating sliders is located at the lower part of the female mold insert. A shovel is located in the male mold, and a top pressing mechanism and a ejector sleeve are located on the male mold platen. In this invention, after the male and female molds are closed, the top rod applies force to the shovel under the action of the elastic element in the top pressing mechanism. The shovel squeezes the floating sliders, causing multiple floating sliders to move radially simultaneously to limit the insertion of the insert. This is suitable for limiting the placement of inserts of different sizes. After mold opening, the shovel disengages from the floating sliders. Based on the elastic element between the floating sliders and the female mold insert, the floating sliders move outward a certain distance under the elastic force of the elastic element, disengaging from the insert and facilitating product removal.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, specifically relating to a floating insert fixing structure. Background Technology

[0002] In existing plastic injection molding processes, inserts need to be placed manually into the mold. The dimensional tolerance of the inserts fluctuates within a certain range, while the mold size is fixed. When the size of the insert is too small, flash will appear around the product after molding. When the size of the insert is too large, it will damage the mold. Utility Model Content

[0003] In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide a floating insert fixing structure that can automatically adapt to the placement of inserts of different sizes.

[0004] This utility model provides the following technical solution: a floating insert fixing structure, including a female mold, a male mold and a male template. The female mold has a through groove, in which a female mold insert is placed. The lower part of the female mold insert is provided with a front mold core, which forms a product forming space with a rear mold core provided on the upper part of the male mold. The lower part of the female mold insert is provided with a set of floating sliders for clamping the insert. The male mold is provided with a shovel for squeezing the floating sliders. The male template is provided with a top pressing mechanism for applying lifting force to the shovel and a ejector for ejecting the formed product.

[0005] Furthermore, the lower part of the master mold insert is provided with a set of sliding grooves arranged circumferentially along the center of the master mold insert, and the floating slider is slidably fitted in the corresponding sliding groove.

[0006] Furthermore, the floating slider includes an upper floating adjustment part and a lower limiting part. An elastic element is provided between the inner side of the floating adjustment part and the side wall of the slide groove, and a gap is left between its outer side wall and the side wall of the through groove of the female mold.

[0007] Furthermore, a set of through holes are provided along the height direction in the mold, and the shovel is placed in the corresponding through holes.

[0008] Furthermore, the male template has a through hole for installing a pressing mechanism. The pressing mechanism includes an end cap fixed to the bottom of the through hole on the male template and a top rod located at the top of the through hole. An elastic element is provided between the end cap and the top rod.

[0009] Furthermore, the bottom of the floating slider is provided with a floating slider wedge surface, and the top of the shovel is provided with a top rod wedge surface that cooperates with the floating slider wedge surface.

[0010] Furthermore, a set of magnets for auxiliary positioning of the insert is provided at the front mold core at the bottom of the female mold insert.

[0011] By adopting the above-mentioned technology, the beneficial effects of this utility model compared with the prior art are as follows:

[0012] 1) In this utility model, after the male and female molds are closed, under the action of the elastic element in the top pressing mechanism, the push rod applies force to the shovel, and the shovel squeezes the floating slider, so that multiple floating sliders move radially at the same time to limit the insert. This is suitable for limiting the placement of inserts of different sizes. After the mold is opened, the shovel separates from the floating slider. Based on the elastic element set between the floating slider and the female mold insert, the floating slider moves a certain distance outward under the action of the elastic force of the elastic element, so that it separates from the insert and makes it easy to remove the product.

[0013] 2) In this utility model, the elastic floating structure design based on the top rod and floating slider can provide a certain elastic clamping force when clamping and limiting the insert, thus avoiding damage to the insert caused by completely rigid clamping. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal cross-sectional structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the master mold of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the female mold insert of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the floating slider of this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the shovel of this utility model;

[0020] Figure 7 This is a schematic diagram of the upper part of the public mold of this utility model. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0022] Conversely, this utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model as defined in the claims. Furthermore, to provide the public with a better understanding of this utility model, certain specific details are described in detail in the following description. However, those skilled in the art will fully understand this utility model even without these detailed descriptions.

[0023] Please see Figure 1-7 A floating insert fixing structure includes a female mold 1, a male mold 2, a female mold insert 3, a floating slider 4, a sleeve 5, a shovel 6, a top pressing mechanism, and a male template 11.

[0024] Specifically, a hexagonal prism-shaped through groove is provided in the middle of the female mold 1, and two opposing limiting grooves are provided at the upper part of the through groove.

[0025] Specifically, the female mold insert 3 is a hexagonal prism structure, which is placed in the through groove in the middle of the female mold 1. The upper part of the female mold insert 3 is provided with two oppositely arranged protrusions, which are placed in the two limiting grooves of the female mold 1.

[0026] The female mold insert 3 has an injection channel, a front mold core at the bottom, and multiple grooves 301 arranged circumferentially along its center. The grooves 301 include a limiting section and a sliding section. Two through holes are provided on the bottom end face of the female mold insert 3. Magnets are tightly fitted in the through holes for auxiliary positioning of the insert 10.

[0027] Specifically, the floating slider 4 is slidably fitted in the corresponding slide groove 301, which includes a floating adjustment part 401 and a limiting part 402. The floating adjustment part 401 is fitted into the limiting section in the slide groove 301. An elastic element 7 is provided between the side wall of the floating adjustment part 401 and the limiting section, and a gap of 0.3mm is left between its outer side wall and the side wall of the through groove of the female mold 1. The limiting part 402 is fitted into the sliding section in the slide groove 301.

[0028] A floating slider wedge surface 403 is provided on the outer side of the lower part of the limiting part 402.

[0029] Specifically, the male mold 2 has a rear mold core and a through groove for placing the shovel 6, and the bottom of the through groove has a stepped surface. The rear mold core and the front mold core form a product injection molding space.

[0030] Specifically, the loader 6 has a rod-shaped structure with a protrusion at the bottom and a top rod wedge surface 601 on one side of the upper end that corresponds to the floating slider wedge surface 403. When the pressing mechanism presses down, the top rod wedge surface 601 contacts the floating slider wedge surface 403 and squeezes the floating slider 4.

[0031] Specifically, the top pressing mechanism is installed on the male template 11, and the sleeve 5 is fixed on the lower top plate and passes through the male template 11 to the product forming position.

[0032] The pressing mechanism includes an end cap 8 and a push rod 9. A set of through holes are provided on the male template 11. The end cap 8 is threadedly fixed to the bottom of the corresponding through hole. The push rod 9 passes through the upper part of the through hole, and its lower end is limited in the through hole. An elastic element 7 is provided between the lower end of the push rod 9 and the upper end of the end cap 8.

[0033] Specifically, the elastic element 7 is a spring.

[0034] The working process of this novel floating insert fixing structure is as follows:

[0035] S1. Before injection molding, when the female mold 1 and male mold 2 in the mold open, the floating slider 4 is subjected to the force of the elastic element 7, and its outer side wall contacts the inner side wall of the through groove in the female mold 1.

[0036] S2. Place the insert 10 into the front mold core of the female mold 1 and use a magnet for auxiliary positioning.

[0037] S3. The moving mechanism on the mold controls the male mold 2 and the male template 11 to move upward, the mold closes, and the ejector rod 9 in the ejector mechanism on the male template 11 is subjected to the elastic force of the elastic element 7 to apply an upward force to the floating slider 4, which drives multiple floating sliders 4 to move radially to clamp the insert 10.

[0038] S4, Injection molding machine injects material, product is formed;

[0039] S5. The moving mechanism on the mold first controls the male template 11 to move down, the top pressing mechanism no longer applies force to the shovel 6, the shovel 6 moves back, and the floating slider 4 moves outward under the action of the elastic element 7, so that the floating slider 4 separates from the insert 10.

[0040] S6. The moving mechanism on the mold controls the male mold 2 to move down, the mold opens, and the top plate moves up to drive the ejector sleeve 5 to eject the formed product.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A floating insert fixing structure, characterized in that, The mold includes a female mold (1), a male mold (2) and a male template (11). The female mold (1) has a through groove in which a female mold insert (3) is placed. The lower part of the female mold insert (3) is provided with a front mold core, which forms a product forming space with the rear mold core provided on the upper part of the male mold (2). The lower part of the female mold insert (3) is provided with a set of floating sliders (4) for clamping inserts (10). The male mold (2) is provided with a shovel (6) for squeezing the floating sliders (4). The male template (11) is equipped with a top pressing mechanism for applying lifting force to the shovel (6) and is provided with a sleeve (5) for ejecting the formed product.

2. The floating insert fixing structure according to claim 1, characterized in that, The lower part of the mother mold insert (3) is provided with a set of grooves (301) arranged in a circle along the center of the mother mold insert (3), and the floating slider (4) is slidably fitted in the corresponding groove (301).

3. The floating insert fixing structure according to claim 2, characterized in that, The floating slider (4) includes an upper floating adjustment part (401) and a lower limiting part (402). An elastic element (7) is provided between the inner side of the floating adjustment part (401) and the side wall of the slide groove (301), and a gap is left between its outer side wall and the side wall of the through groove of the female mold (1).

4. The floating insert fixing structure according to claim 3, characterized in that, The mold (2) has a set of through holes along the height direction, and the shovel (6) is placed in the corresponding through holes.

5. The floating insert fixing structure according to claim 4, characterized in that, The male template (11) has a through hole for installing a pressing mechanism. The pressing mechanism includes an end cap (8) fixed on the male template (11) at the bottom of the through hole and a top rod (9) located at the top of the through hole. An elastic element (7) is provided between the end cap (8) and the top rod (9).

6. The floating insert fixing structure according to claim 5, characterized in that, The bottom of the floating slider (4) is provided with a floating slider wedge surface (403), and the top of the shovel (6) is provided with a top rod wedge surface (601) that cooperates with the floating slider wedge surface (403).

7. The floating insert fixing structure according to claim 1, characterized in that, The bottom of the mother mold insert (3) is provided with a set of magnets for auxiliary positioning of the insert (10).

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