CN215320343U

CN215320343U - Sliding block core pulling mechanism and injection mold

Info

Publication number: CN215320343U
Application number: CN202121341609.7U
Authority: CN
Inventors: 刘渊
Original assignee: Aux Air Conditioning Co Ltd; Ningbo Aux Electric Co Ltd
Current assignee: Aux Air Conditioning Co Ltd; Ningbo Aux Electric Co Ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-12-28
Anticipated expiration: 2031-06-16

Abstract

The utility model discloses a sliding block core-pulling mechanism and an injection mold, and relates to the technical field of molds. The sliding block core pulling mechanism comprises a movable mould base plate, a movable mould core, a sliding block, a pressing strip, a transmission part and a time delay assembly. The movable mould benevolence passes through the time delay subassembly and is connected with the movable mould bottom plate, the time delay subassembly is used for realizing the time delay die sinking of movable mould benevolence, the driving medium is installed on the movable mould bottom plate, and with slider sliding fit, layering fixed connection is on movable mould benevolence, and with slider sliding fit, the movable mould bottom plate can drive the driving medium and move along the die sinking direction to make the slider slide along the direction of loosing core for the layering, the movable mould bottom plate can also drive movable mould benevolence through the time delay subassembly and move along the die sinking direction when the slider slides to preset the position. The sliding block core-pulling mechanism provided by the utility model can realize core pulling and demoulding actions in the mould opening process, shortens the production period, improves the production efficiency, simplifies the mould assembly steps and reduces the mould cost.

Description

Sliding block core pulling mechanism and injection mold

Technical Field

The utility model relates to the technical field of molds, in particular to a sliding block core-pulling mechanism and an injection mold.

Background

At present, in the application of an injection mold, if an inverted buckle is arranged on a product, and the extending direction of the inverted buckle is inconsistent with the demolding direction of the product, the cylinder is required to drive an inclined pulling mechanism to perform core-pulling molding on the inverted buckle before mold opening, and then mold opening is performed to realize demolding of the product. However, the production cycle of the product is long, the production efficiency is low, the assembly steps of the mold are complicated, and the mold cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model solves the problem of how to realize core pulling and demoulding actions in the mould opening process, shortens the production period, improves the production efficiency, simplifies the mould assembly steps and reduces the mould cost.

In order to solve the above problems, the technical solution of the present invention is realized as follows:

in a first aspect, the utility model provides a sliding block core pulling mechanism, which comprises a movable mould base plate, a movable mould core, a sliding block, a pressing strip, a transmission part and a time delay component, wherein the movable mould core is connected with the movable mould base plate through the time delay component, the time delay component is used for realizing time delay die opening of the movable mould core, the transmission part is installed on the movable mould base plate and is in sliding fit with the sliding block, the pressing strip is fixedly connected to the movable mould core and is in sliding fit with the sliding block, the movable mould base plate can drive the transmission part to move along a die opening direction so that the sliding block can slide along a core pulling direction relative to the pressing strip, and the movable mould base plate can also drive the movable mould core to move along the die opening direction through the time delay component when the sliding block slides to a preset position. Compared with the prior art, the sliding block core pulling mechanism provided by the utility model adopts the time delay assembly connected between the movable mold core and the movable mold bottom plate and the sliding block in sliding fit with the transmission part, so that the core pulling and demolding actions can be realized successively in the mold opening process, the production period is shortened, the production efficiency is improved, the mold assembly steps are simplified, and the mold cost is reduced.

Further, the slider includes shaping portion and leads smooth portion, shaping portion and lead smooth portion fixed connection, and shaping portion is used for the shaping product, leads smooth portion and is used for simultaneously with driving medium and layering sliding fit. The driving medium can exert to holding power to the gliding portion to promote the gliding portion of leading to slide, the layering can carry out spacingly to the gliding portion of leading, so that the gliding portion of leading only can follow the direction of loosing core and slide.

Furthermore, the guide sliding part is provided with a containing groove, the inner side wall of the containing groove is provided with a guide sliding groove, the transmission part is provided with a boss, the transmission part extends into the containing groove, and the boss is slidably arranged in the guide sliding groove. The boss can slide for the guide sliding groove to apply to holding power to the lateral wall of guide sliding groove, thereby the drive is led smooth portion and is taken place the motion, makes the smooth portion of leading slide along the direction of loosing core and slides under the limiting displacement of layering, and then drives the shaping portion and follow the direction motion of loosing core, realizes the shaping of loosing core of product.

Furthermore, the number of the guide sliding grooves and the number of the bosses are two, the two guide sliding grooves are oppositely arranged on two side walls of the accommodating groove, and each guide sliding groove is in sliding fit with one boss. The two bosses can synchronously slide relative to the two guide sliding grooves to apply abutting force to the side walls of the two guide sliding grooves simultaneously, so that the stability of the sliding fit process is ensured, and the stability of the core pulling process is improved.

Furthermore, the layering is provided with the stopper, and the spacing groove has been seted up to the portion of leading the cunning, and the spacing groove extends the setting along the direction of loosing core, and the stopper slides and sets up in the spacing inslot. The limiting block can limit and guide the limiting groove, so that the guide sliding part can only slide along the core-pulling direction, and the forming part is driven to perform core-pulling forming.

Furthermore, the number of the pressing strips is two, the two pressing strips are arranged in parallel at intervals, and the sliding block can be slidably arranged between the two pressing strips. Two layering combined action to spacing to the slider, prevent that the slider from taking place the condition of slope or skew at the slip in-process, and can guarantee that the slider slides along the direction of loosing core.

Furthermore, the time delay assembly comprises a die foot and a limit screw, the movable die bottom plate is fixedly connected with the die foot, a step hole is formed in the die foot, a threaded hole is formed in the movable die core, the limit screw penetrates through the step hole and is matched with the threaded hole, and the head of the limit screw can be abutted against the step surface of the step hole when the sliding block slides to a preset position. The die leg can drive the movable die core to move along the die opening direction through the limiting screw rod so as to realize the demoulding of the product.

Furthermore, the time delay assembly also comprises an elastic piece, one end of the elastic piece is abutted against the die pin, and the other end of the elastic piece is abutted against the movable die core. The elastic piece is always in a compression state and is used for applying elasticity to the movable mould core so that the movable mould core has a tendency of moving towards a direction far away from the mould foot.

Furthermore, the sliding block core pulling mechanism further comprises a guide pillar, the movable mold core is provided with a matching groove, and the guide pillar is fixedly installed on the movable mold base plate, extends into the matching groove and is in sliding fit with the matching groove. The guide pillar can slide for the cooperation groove, and the cooperation groove can carry out spacing and direction to the guide pillar to guarantee that movable mould benevolence can only follow the axial slip of guide pillar, and keep away from or be close to the movable mould bottom plate.

In a second aspect, the utility model provides an injection mold, which comprises the slider core pulling mechanism, wherein the slider core pulling mechanism comprises a movable mold base plate, a movable mold core, a slider, a pressing strip, a transmission part and a time delay component, the movable mold core is connected with the movable mold base plate through the time delay component, the time delay component is used for realizing time delay mold opening of the movable mold core, the transmission part is installed on the movable mold base plate and is in sliding fit with the slider, the pressing strip is fixedly connected to the movable mold core and is in sliding fit with the slider, the movable mold base plate can drive the transmission part to move along a mold opening direction so that the slider slides along a core pulling direction relative to the pressing strip, and the movable mold base plate can also drive the movable mold core to move along the mold opening direction through the time delay component when the slider slides to a preset position. The injection mold can successively realize core-pulling and demolding actions in the mold opening process, shorten the production period, improve the production efficiency, simplify the mold assembly steps and reduce the mold cost.

Drawings

FIG. 1 is a schematic view of a slider core pulling mechanism according to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a slider core pulling mechanism according to a first embodiment of the present invention from another perspective;

FIG. 3 is a cross-sectional view from one perspective of a slider core pulling mechanism according to a first embodiment of the present invention;

FIG. 4 is an exploded view of the mating of the slide and the drive member in the slide core pulling mechanism according to the first embodiment of the present invention;

FIG. 5 is an exploded view of the slider and bead mating arrangement of the slider core pulling mechanism according to the first embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a slider in the slider core-pulling mechanism according to the first embodiment of the present invention;

FIG. 7 is a cross-sectional view from another perspective of the slider core pulling mechanism according to the first embodiment of the present invention.

Description of reference numerals:

100-a slider core-pulling mechanism; 110-a moving die base plate; 120-moving die core; 121-mating grooves; 122-a threaded hole; 130-a slider; 131-a forming section; 132-a slide guide; 133-a receiving groove; 134-a guide chute; 135-a limit groove; 140-pressing strips; 141-a limiting block; 150-a transmission member; 151-boss; 160-a delay component; 161-mold feet; 162-a limit screw; 163-an elastic member; 164-stepped bore; 165-step surface; 166-positioning groove; 170-guide pillars; 200-products.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

First embodiment

Referring to fig. 1, fig. 2 and fig. 3 in combination, an embodiment of the present invention provides a slider core-pulling mechanism 100 for performing core-pulling molding on a product 200. The core pulling and demolding actions can be realized in the mold opening process, the production period is shortened, the production efficiency is improved, the mold assembling steps are simplified, and the mold cost is reduced.

It should be noted that the slider core-pulling mechanism 100 is used for pulling a core of an inverted buckle on the product 200, and the slider core-pulling mechanism 100 is also used for demolding the whole product 200, wherein the core-pulling direction is different from the demolding direction, and the slider core-pulling mechanism 100 can successively implement the two actions.

The slide core-pulling mechanism 100 comprises a movable mold base plate 110, a movable mold core 120, a slide block 130, a pressing bar 140, a transmission piece 150, a time delay assembly 160 and a guide post 170. The movable mold core 120 is connected to the movable mold base plate 110 through the delay assembly 160, the delay assembly 160 is disposed between the movable mold core 120 and the movable mold base plate 110, and the delay assembly 160 is used for realizing the delayed mold opening of the movable mold core 120, that is, in the mold opening process, the movable mold base plate 110 moves in a direction away from the fixed mold plate (not shown), and after a period of time, the movable mold base plate 110 drives the movable mold core 120 to move in a direction away from the fixed mold plate through the delay assembly 160. The transmission member 150 is installed on the movable mold base plate 110 and is in sliding fit with the sliding block 130, and the transmission member 150 is used for driving the sliding block 130 to slide under the driving of the movable mold base plate 110. The pressing strip 140 is fixedly connected to the movable mold core 120 and is in sliding fit with the sliding block 130, and the pressing strip 140 is used for limiting and guiding the sliding block 130. Specifically, the movable mold base plate 110 can drive the transmission member 150 to move along the mold opening direction, that is, the transmission member 150 is driven to move towards the direction away from the fixed mold plate, so that the slider 130 slides along the core-pulling direction relative to the pressing strip 140, thereby realizing core-pulling molding of the product 200; the movable mold base plate 110 can also drive the movable mold core 120 to move along the mold opening direction through the delay assembly 160 when the slide block 130 slides to the preset position, so as to realize the demolding of the product 200.

It should be noted that the movable mold core 120 is provided with a fitting groove 121, and the guide pillar 170 is fixedly mounted on the movable mold base plate 110, extends into the fitting groove 121, and is in sliding fit with the fitting groove 121. The guide post 170 can slide relative to the matching groove 121, and the matching groove 121 can limit and guide the guide post 170 so as to ensure that the movable die core 120 can only slide along the axial direction of the guide post 170 and is far away from or close to the movable die base plate 110.

Referring to fig. 4, 5 and 6, the slider 130 includes a forming portion 131 and a guiding portion 132. The forming portion 131 is fixedly connected to the sliding guide portion 132, and in the embodiment, the forming portion 131 and the sliding guide portion 132 are integrally formed to improve the connection strength. The forming part 131 is used for forming the product 200, the sliding guide part 132 is used for being matched with the transmission part 150 and the pressing strip 140 in a sliding mode, the transmission part 150 can apply abutting force to the sliding guide part 132 to push the sliding guide part 132 to slide, and the pressing strip 140 can limit the sliding guide part 132 so that the sliding guide part 132 can only slide along the core-pulling direction.

It is noted that the sliding guide portion 132 has a receiving groove 133, the inner sidewall of the receiving groove 133 has a sliding guide groove 134, the transmission member 150 has a boss 151, the transmission member 150 extends into the receiving groove 133, and the boss 151 is slidably disposed in the sliding guide groove 134. The boss 151 can slide relative to the guide sliding groove 134 to apply a supporting force to the side wall of the guide sliding groove 134, so that the guide sliding portion 132 is driven to move, the guide sliding portion 132 slides along the core pulling direction under the limiting effect of the pressing strip 140, the forming portion 131 is driven to move along the core pulling direction, and core pulling forming of the product 200 is achieved.

In this embodiment, the number of the guide chutes 134 and the bosses 151 is two, two guide chutes 134 are arranged on two side walls of the accommodating groove 133, two bosses 151 are arranged on two sides of the transmission member 150, each guide chute 134 is in sliding fit with one boss 151, and the two bosses 151 can slide relative to the two guide chutes 134 synchronously, so as to apply a supporting force to the side walls of the two guide chutes 134 simultaneously, thereby ensuring the stability and reliability of the sliding fit process, and improving the stability of the core pulling process.

It should be noted that the pressing bar 140 is provided with a limiting block 141, the guide sliding part 132 is provided with a limiting groove 135, the limiting groove 135 extends along the core pulling direction, and the limiting block 141 is slidably disposed in the limiting groove 135. Specifically, the limiting block 141 extends into the limiting groove 135 and can slide relative to the limiting groove 135, and the limiting block 141 can limit and guide the limiting groove 135, so that the guide sliding portion 132 can only slide along the core pulling direction, and the forming portion 131 is driven to perform core pulling forming.

In this embodiment, the number of the pressing strips 140 is two, the two pressing strips 140 are arranged in parallel at intervals, and the sliding block 130 is slidably arranged between the two pressing strips 140. The two pressing strips 140 act together to limit the sliding block 130, prevent the sliding block 130 from inclining or deviating in the sliding process, and ensure that the sliding block 130 slides along the core-pulling direction.

Further, for convenience of understanding, in order to analyze the stress on the slider 130, the movable mold base plate 110 drives the transmission member 150 to move along the mold opening direction, the transmission member 150 applies a total force F1 along the mold opening direction to the slider 130, and the total force F1 is decomposed into a component force F2 along the core pulling direction and a component force F3 perpendicular to the core pulling direction, wherein the component force F2 along the core pulling direction can drive the slider 130 to slide along the core pulling direction to realize core pulling molding of the product 200, and the component force F3 perpendicular to the core pulling direction is balanced with the abutting force applied by the limiting block 141 to the inner side wall of the limiting groove 135.

Referring to fig. 7, the delay assembly 160 includes a mold leg 161, a limit screw 162, and an elastic member 163. The movable mold base plate 110 is fixedly connected with the mold legs 161, and the movable mold base plate 110 can directly drive the mold legs 161 to move. The die leg 161 is provided with a stepped hole 164, the movable die core 120 is provided with a threaded hole 122, the position of the stepped hole 164 corresponds to the position of the threaded hole 122, the limit screw 162 penetrates through the stepped hole 164 and is matched with the threaded hole 122, and the limit screw 162 is screwed with respect to the threaded hole 122 so as to fix the relative position of the limit screw 162 and the movable die core 120. The head of the limit screw 162 can abut against the step surface 165 of the step hole 164 when the slider 130 slides to the preset position, and at this time, the die leg 161 can drive the movable die core 120 to move along the die opening direction through the limit screw 162, so as to realize the die releasing of the product 200.

Specifically, when the mold is opened, the movable mold base plate 110 drives the mold leg 161 to move along the mold opening direction, at this time, the movable mold core 120 remains stationary, and the limit screw 162 slides in the stepped hole 164; when the sliding block 130 slides to a preset position, the core pulling action is completed, and at the moment, the head of the limiting screw 162 abuts against the step surface 165 of the step hole 164; then, the moving mold base plate 110 continues to drive the mold legs 161 to move along the mold opening direction, and at this time, the step surface 165 applies a holding force to the head of the limit screw 162, so as to pull the moving mold core 120 to move along the mold opening direction through the limit screw 162, thereby realizing the delayed mold opening of the moving mold core 120.

It should be noted that one end of the elastic member 163 abuts against the mold leg 161, and the other end abuts against the movable mold core 120. The elastic member 163 is always in a compressed state, and the elastic member 163 is used to apply an elastic force to the moving die core 120, so that the moving die core 120 has a tendency to move away from the die leg 161. Thus, before the sliding block 130 slides to the predetermined position, the elastic member 163 can support the moving mold core 120 against the fixed mold plate, so as to ensure that the moving mold core 120 does not displace between the fixed mold plate and the mold leg 161, thereby improving the stability of the delayed mold opening.

In this embodiment, the mold leg 161 is provided with a positioning groove 166, the elastic element 163 is disposed in the positioning groove 166 and abuts against the bottom wall of the positioning groove 166, the elastic element 163 can apply an elastic force to the bottom wall of the positioning groove 166, so that the movable mold insert 120 has a tendency of moving in a direction away from the mold leg 161, and the positioning groove 166 can limit and guide the elastic element 163, so as to ensure that the elastic element 163 can only deform along the axial direction thereof.

In this embodiment, the number of the positioning grooves 166 and the number of the elastic members 163 are two, the two positioning grooves 166 are disposed on the mold leg 161 in parallel at intervals, and each of the elastic members 163 is disposed in one positioning groove 166, but the present invention is not limited thereto, and in other embodiments, the number of the positioning grooves 166 and the number of the elastic members 163 are four or six, and the number of the positioning grooves 166 and the number of the elastic members 163 are not particularly limited.

In this embodiment, the elastic member 163 is a spring, but the present invention is not limited thereto, and in other embodiments, the elastic member 163 may be an elastic rubber, and the material of the elastic member 163 is not particularly limited.

It should be noted that, in the process of opening the mold, the movable mold base plate 110 drives the transmission member 150 and the mold leg 161 to move along the mold opening direction, and in this process, the transmission member 150 applies a holding force to the slider 130, so that the slider 130 slides along the core-pulling direction under the action of the pressing strip 140, so as to realize core-pulling molding of the product 200, and meanwhile, the limit screw 162 slides in the stepped hole 164, and the movable mold core 120 is kept stationary under the elastic force of the elastic member 163; when the sliding block 130 slides to a preset position, the core pulling action is completed, and at the moment, the head of the limiting screw 162 abuts against the step surface 165 of the step hole 164; then the movable mold base plate 110 drives the transmission member 150 and the mold leg 161 to move continuously along the mold opening direction, and the mold leg 161 pulls the movable mold core 120 to move along the mold opening direction through the limit screw 162, so as to realize the mold release of the product 200.

In the sliding block core pulling mechanism 100 according to the embodiment of the present invention, the movable mold core 120 is connected to the movable mold base plate 110 through the delay component 160, the delay component 160 is used for realizing the delay mold opening of the movable mold core 120, the transmission member 150 is installed on the movable mold base plate 110 and is in sliding fit with the sliding block 130, the pressing bar 140 is fixedly connected to the movable mold core 120 and is in sliding fit with the sliding block 130, the movable mold base plate 110 can drive the transmission member 150 to move along the mold opening direction, so that the sliding block 130 slides along the core pulling direction relative to the pressing bar 140, and the movable mold base plate 110 can also drive the movable mold core 120 to move along the mold opening direction through the delay component 160 when the sliding block 130 slides to the preset position. Compared with the prior art, the slide block core pulling mechanism 100 provided by the utility model adopts the time delay component 160 connected between the movable mold core 120 and the movable mold base plate 110 and the slide block 130 in sliding fit with the transmission part 150, so that the core pulling and demolding actions can be realized in sequence in the mold opening process, the production period is shortened, the production efficiency is improved, the mold assembly steps are simplified, and the mold cost is reduced.

Second embodiment

The present invention provides an injection mold (not shown) for injection molding a product 200. The injection mold includes a slider core-pulling mechanism 100 and a fixed mold plate. The basic structure and principle of the sliding block core pulling mechanism 100 and the generated technical effects are the same as those of the first embodiment, and for the sake of brief description, the corresponding contents in the first embodiment may be referred to where this embodiment is not mentioned.

In this embodiment, the movable mold base plate 110 can be close to or far from the fixed mold plate to realize mold closing or mold opening of the injection mold. The fixed mold plate is provided with a fixed mold core (not shown), and the movable mold core 120 and the fixed mold core are combined to form a mold cavity (not shown), wherein the mold cavity is used for injecting molten plastic to realize injection molding of the product 200. Specifically, when the injection mold is opened, the slider core pulling mechanism 100 successively realizes core pulling and demolding actions, shortens the production cycle, and improves the production efficiency.

The beneficial effects of the injection mold according to the embodiment of the present invention are the same as those of the first embodiment, and are not described herein again.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. The utility model provides a slider mechanism of loosing core, characterized in that, includes movable mould bottom plate (110), movable mould benevolence (120), slider (130), layering (140), driving medium (150) and time delay subassembly (160), movable mould benevolence (120) pass through time delay subassembly (160) with movable mould bottom plate (110) are connected, time delay subassembly (160) are used for realizing the time delay die sinking of movable mould benevolence (120), driving medium (150) install in on movable mould bottom plate (110), and with slider (130) sliding fit, layering (140) fixed connection in on movable mould benevolence (120), and with slider (130) sliding fit, movable mould bottom plate (110) can drive driving medium (150) move along the die sinking direction, so that slider (130) for layering (140) slide along the direction of loosing core, movable mould bottom plate (110) can also pass through when slider (130) slide to preset the position time delay subassembly (160) drive The movable mould core (120) moves along the mould opening direction.

2. The slider core-pulling mechanism according to claim 1, wherein the slider (130) comprises a forming part (131) and a guiding and sliding part (132), the forming part (131) is fixedly connected with the guiding and sliding part (132), the forming part (131) is used for forming a product (200), and the guiding and sliding part (132) is used for simultaneously sliding-fitting with the transmission piece (150) and the pressing strip (140).

3. The sliding block core pulling mechanism according to claim 2, wherein the sliding guide portion (132) is provided with a receiving groove (133), the inner side wall of the receiving groove (133) is provided with a sliding guide groove (134), the transmission member (150) is provided with a boss (151), the transmission member (150) extends into the receiving groove (133), and the boss (151) is slidably arranged in the sliding guide groove (134).

4. The sliding block core pulling mechanism according to claim 3, wherein the number of the sliding guide grooves (134) and the number of the bosses (151) are two, the two sliding guide grooves (134) are oppositely arranged on two side walls of the accommodating groove (133), and each sliding guide groove (134) is in sliding fit with one boss (151).

5. The sliding block core pulling mechanism according to claim 2, wherein the pressing bar (140) is provided with a limiting block (141), the sliding guide part (132) is provided with a limiting groove (135), the limiting groove (135) extends along the core pulling direction, and the limiting block (141) is slidably arranged in the limiting groove (135).

6. The sliding block core pulling mechanism according to claim 1, wherein the number of the pressing strips (140) is two, the two pressing strips (140) are arranged in parallel at intervals, and the sliding block (130) is slidably arranged between the two pressing strips (140).

7. The sliding block core pulling mechanism according to claim 1, wherein the delay assembly (160) comprises a die leg (161) and a limit screw (162), the movable die base plate (110) is fixedly connected with the die leg (161), the die leg (161) is provided with a stepped hole (164), the movable die core (120) is provided with a threaded hole (122), the limit screw (162) penetrates through the stepped hole (164) and is matched with the threaded hole (122), and the head of the limit screw (162) can abut against a stepped surface (165) of the stepped hole (164) when the sliding block (130) slides to a preset position.

8. The sliding block core pulling mechanism according to claim 7, wherein the time delay assembly (160) further comprises an elastic member (163), one end of the elastic member (163) abuts against the mold leg (161), and the other end abuts against the movable mold core (120).

9. The sliding block core pulling mechanism according to claim 1, further comprising a guide post (170), wherein the movable mold core (120) is provided with a matching groove (121), and the guide post (170) is fixedly mounted on the movable mold base plate (110), extends into the matching groove (121), and is in sliding fit with the matching groove (121).

10. An injection mold comprising the slide core pulling mechanism according to any one of claims 1 to 9.