CN224089568U - Pulling block structure for strong demolding of soft rubber - Google Patents

Abstract

The utility model discloses a poking block structure for soft rubber strong demolding, which comprises a template, a mold core, sliding blocks, a stripping ejector rod and poking blocks, wherein the mold core is arranged on the template, two sliding blocks which slide relatively with the mold closing and opening of the mold are arranged on the templates on two sides of the mold core in a sliding manner, product profiling forming grooves are formed on opposite surfaces of the two sliding blocks, the mold core is positioned in the product profiling forming grooves, the product profiling forming grooves and a mold core forming cavity are product forming cavities, the stripping ejector rod which rises along with the mold opening is inserted in the vertical direction of the template and the mold core, poking blocks which slide synchronously with the sliding blocks are arranged on the templates on two sides of the product forming cavity in a sliding manner, poking block parts which can poke the product reversing structure outwards are arranged at the poking block extending ends in an upward manner, and the poking block parts and the mold core are used as inner side forming male dies of products. By means of the mode, the soft rubber is utilized, the product is separated from the back-off position at the forced-off position under the action of the shifting block, ejection resistance is reduced, and the product can be ejected smoothly.

Description

Pulling block structure for strong demolding of soft rubber

Technical Field

The utility model relates to the technical field of dies, in particular to a shifting block structure for strong demolding of soft rubber.

Background

As shown in fig. 1, the product material of the injection molding product is TPU soft rubber, and the bottom of the product is internally provided with a back-off structure a in an extending manner, as shown in fig. 2, the back-off structure of the product is directly designed on the mold to be a forced release structure for simplifying the mold structure, and the product is ejected upwards by adopting two ejector blocks, as shown in fig. 3, but the actual test mold verifies that the product has large package resistance due to large back-off amount of the product and causes ejection and take-out difficulties after injection molding of the final product.

Based on the defects and shortcomings, the prior art needs to be improved, and a poking block structure for soft rubber strong demoulding is designed.

Disclosure of utility model

The utility model mainly solves the technical problem of providing a soft rubber strong demolding shifting block structure, which utilizes the characteristic of soft rubber to separate a product strong demolding position from a back-off position under the action of a shifting block, reduces ejection resistance and can successfully eject the product.

In order to solve the technical problems, the utility model adopts the technical scheme that the soft rubber strong demolding pulling block structure comprises a template, a mold core, sliding blocks, pulling-out ejector rods and pulling blocks, wherein the mold core is arranged on the template, the two sliding blocks which slide relatively with the mold closing and opening of the mold are arranged on the template on two sides of the mold core in a sliding manner, a product profiling forming groove is formed on the opposite surfaces of the two sliding blocks, the two sliding blocks are used as product outer side forming concave molds, the mold core is positioned in the product profiling forming groove, a product profiling forming groove and a mold core forming cavity are used as product forming cavities, the pulling-out ejector rods which lift up along with the mold opening are inserted in the vertical direction of the mold core, pulling blocks are arranged on the templates on two sides of the product forming cavity in a sliding manner, pulling block parts which can outwards stir a product reversing structure are arranged on the extending ends of the pulling blocks in an upward manner, and the pulling block parts and the mold core are used as product inner side forming convex molds.

Preferably, the outer end of the shifting block is provided with a boss, the bottom of the sliding block is provided with a groove matched with the boss, and the boss is positioned in the groove.

Preferably, a bumper strip is further mounted on one surface of the boss facing the groove.

Preferably, the template is provided with a guide chute, the shifting block is positioned in the guide chute, the shifting block is provided with a waist-shaped stepped hole, and a positioning screw penetrating through the waist-shaped stepped hole is vertically arranged in the guide chute.

Compared with the prior art, the utility model has the beneficial effects that:

the sliding shifting blocks are respectively added at the back-off forced-release positions of the mold, the original sliding block structure is utilized to drive the shifting blocks, the shifting blocks can push the side wall of the product outwards away from the back-off positions of the mold, the back-off forced-release size is reduced, and the resistance in ejection is reduced so that the product is ejected smoothly.

Drawings

Fig. 1 is a schematic structural view of a mold injection product.

Fig. 2 is an enlarged view of a portion of fig. 1.

Fig. 3 is a schematic diagram of a strong release structure of a top block for an injection molding product of a prior art mold.

Fig. 4 is a schematic structural view of a block structure for soft rubber strong demolding.

Fig. 5 is a schematic view of a part of a block structure for soft rubber strong demolding.

Fig. 6 is a partial cross-sectional view of a soft rubber strong demolding block structure.

Fig. 7 is a schematic diagram of a block structure for soft rubber strong demolding.

Fig. 8 is a drawing of a block structure for strong demolding of soft rubber.

Wherein, 1, a template, 10, a guiding chute, 2, a mold core, 3, a slide block, 30, a groove, 4, a stripping ejector rod, 5, a shifting block, 50, a shifting block part, 51, a boss, 52, a waist-shaped stepped hole, 6, a collision avoidance bar, 7 and a set screw.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

Referring to fig. 4 to 8, an embodiment of the present utility model includes:

The utility model provides a flexible glue is dialling piece structure for strong drawing of patterns, this kind of flexible glue is dialling piece structure for strong drawing of patterns includes template 1, mold core 2, slider 3, takes off material ejector pin 4 and shifting block 5, install mold core 2 on the template 1, be provided with two spouts on the template 1 of mold core 2 both sides, slide department slidable mounting has two sliders 3 that can be closed, two sliders 3 slide the closure relatively along with the mould compound die, two sliders 3 slide the opening along with the mould die opening dorsad and open, two sliders 3 are provided with the product profile modeling groove opposite side, two sliders 3 are as the outside shaping die of product, mold core 2 is located the inside of product profile modeling groove, product profile modeling groove and mold core 2 form the cavity and are the product shaping die cavity, template 1 and mold core 2 vertical direction cartridge have take off material ejector pin 4 along with the die opening jack-up, slidable mounting has shifting block 5 on the template 1 of product shaping die cavity both sides, shifting block 5 slide along with slider 3, the extension is provided with the shifting block 50 that can outwards stir the product back-off structure upwards, shifting block 50 and 2 are as the shaping die of product.

The outer end of the shifting block 5 is provided with a boss 51, the bottom of the sliding block 3 is provided with a groove 30 matched with the boss 51, the boss 51 is positioned in the groove 30, and the sliding block 3 slides to drive the shifting block 5 to follow the groove 30 through the matched boss 51 and the groove 30.

The side of the boss 51 facing the recess 30 is also provided with a bumper strip 6.

The template 1 is provided with a guide chute 10, the shifting block 5 is positioned in the guide chute 10, the shifting block 5 is provided with a waist-shaped stepped hole 52, a positioning screw 7 penetrating through the waist-shaped stepped hole 52 is vertically arranged in the guide chute 10, and the positioning screw 7 is matched with the waist-shaped stepped hole 52 to play a role in guiding and positioning.

When the soft rubber strong demolding poking block structure works, after the product is molded, the mold is opened, the sliding blocks 3 on two sides slide back to back along with the mold opening, the sliding blocks 3 on two sides continuously move to drive the poking blocks 5 to slide, after the poking blocks 5 are driven by the sliding blocks 3, the poking block part 50 pushes the side wall (product back-off structure) of the product to be separated from the strong back-off position, as shown in fig. 8, and after the mold opening action is completed, the material-off ejector rod 4 ejects the product normally.

According to the poking block structure for the soft rubber strong demolding, the poking block is used for separating the product from the reverse buckling position at the strong stripping position under the action of the poking block by utilizing the characteristic of the soft rubber, so that the ejection resistance is reduced, and the product can be ejected smoothly.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims (4)

1. The utility model provides a flexible glue is pulling block structure for drawing of patterns by force, its characterized in that includes template (1), mold core (2), slider (3), takes off material ejector pin (4) and pulling block (5), install mold core (2) on template (1), slidable mounting has two along with the mould compound die, the slider (3) of opening the mould relative slip on template (1) of mold core (2) both sides, two slider (3) opposite sides are provided with product profile modeling shaping groove, two slider (3) are as the outside shaping die of product, mold core (2) are located the inside of product profile modeling shaping groove, product profile modeling shaping groove and mold core (2) form the cavity and be the product shaping die cavity, template (1) and mold core (2) vertical direction cartridge have take off material ejector pin (4) along with the lift-up of opening the mould, slidable mounting pulling block (5) on template (1) of product shaping die cavity both sides, pulling block (5) slide along with slider (3) synchronous, pulling block (5) stretch upward and be provided with can outwards product flip structure's pulling block portion (50), product flip structure's shaping die (2) are as the inside punch die.

2. The flexible glue is strong to demold and uses the plectrum structure according to claim 1, wherein the said plectrum (5) outer end has boss (51), the bottom of the slide block (3) has recess (30) cooperating with boss (51), the boss (51) is located in recess (30).

3. The block structure for soft rubber strong demolding of claim 2, wherein the side of the boss (51) facing the groove (30) is also provided with a collision preventing strip (6).

4. The flexible glue is strong to demold and uses the shifting block structure according to claim 1, wherein the said template (1) has offered the guide chute (10), the shifting block (5) is located in guide chute (10), the shifting block (5) has offered the waist-shaped stepped hole (52), install the set screw (7) penetrating waist-shaped stepped hole (52) vertically in the guide chute (10).