Combined sliding block mechanism for realizing sequential action in PIN insert plastic mold

Abstract

The utility model discloses a combined sliding block mechanism for realizing sequential actions in a PIN insert plastic mould, which comprises a sliding block, an upper ejector plate, a movable insert component, an extrusion component, a lower ejector plate, a sliding block seat, an inclined guide post, an oil cylinder connecting block and an oil cylinder, the upper ejector plate, the movable insert assembly and the lower ejector plate are sequentially arranged in the mounting cavity, the extrusion assembly is arranged at the top of the sliding block seat and corresponds to the movable insert assembly, the two sides of the back of the sliding block seat are connected with the oil cylinder connecting block through equal-height screws, and the driving end of the oil cylinder is correspondingly connected with the back of the oil cylinder connecting block. According to the utility model, the problems that the PIN teeth in the back-off area in the insert plastic mould are easy to crush and damage the mould, burrs are easy to generate, the mould is repeatedly repaired and the like are solved, the repair and maintenance cost of the hardware teeth is greatly reduced, the time for early development and later maintenance is shortened, the structure is stable and reliable, and the requirement on the precision of the hardware teeth is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of plastic injection molds, in particular to a combined slider mechanism for realizing sequential actions in a PIN insert plastic mold. Background Art

[0002] In the field of injection mold technology, products typically feature PIN teeth located in the undercut area of the plastic part. Traditionally, sliders are inserted using angled guide pins or hydraulic cylinders, resulting in a simple and convenient structure. However, in this case, the PIN teeth are suspended in the mold. Due to errors in PIN tooth processing, the insert plastic mold needs to be placed in the mold before injection. The positions of the PIN teeth of the inserts placed front and back deviate, and the PIN teeth require sealing with glue. There should not be too much air space in the mold, and the slider inserted by the guide pin or hydraulic cylinder has a high risk of colliding with the PIN teeth. The movement of the slider and PIN teeth is out of the operator's sight, and by the time they are discovered, the mold has already been damaged. Due to the high probability of mold collisions, mold repairs require excessive frequency, resulting in losses in manpower and material resources, and affecting the quantitative production of products.

[0003] In this case, due to the structural and functional requirements of the product, the PIN teeth could not be positioned in advance in the rear mold, causing the PIN teeth in this position to be in a suspended state. When the mold is closed, the slider moves forward, and factors such as the verticality processing error of the PIN teeth cause misalignment between the hardware and the slider, which in turn causes the die pressing phenomenon. The conventional mold opening solution causes the mold to be crushed and the product to be scrapped. The mold repair solution often enlarges the gap between the slider and the mold, which solves the problem of hardware die pressing while also causing the problem of flashing. The above two undesirable phenomena occur repeatedly, and the mold needs to be frequently repaired and tested, which greatly increases the development cost and cycle of the project, and increases the maintenance and repair costs after mass production. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a combined slider mechanism that realizes sequential action in a PIN insert plastic mold, thereby solving the problems of PIN teeth in the undercut area of the insert plastic mold easily damaging the mold, easily generating flashing, and requiring repeated mold repairs. The utility model greatly reduces the cost of hardware tooth repair and maintenance, shortens the early development and later maintenance time, and has a stable and reliable structure, which reduces the precision requirements for the hardware teeth.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: providing a combined slider mechanism for realizing sequential actions in a PIN insert plastic mold, comprising a slider, an upper ejector plate, a movable insert assembly, an extrusion assembly, a lower ejector plate, a slider seat, an inclined guide column, a cylinder connecting block and a cylinder, the back of the slider is fixed corresponding to the front of the slider seat, the front of the slider seat is provided with an inwardly concave mounting cavity, the upper ejector plate, the movable insert assembly and the lower ejector plate are sequentially arranged in the mounting cavity, the extrusion assembly is arranged at the top of the slider seat corresponding to the movable insert assembly, the rear top of the slider seat is provided with an inclined hole corresponding to the inclined guide column, the two sides of the back of the slider seat are connected to the cylinder connecting block by equal height screws, and the driving end of the cylinder is connected corresponding to the back of the cylinder connecting block.

[0006] In a preferred embodiment of the present invention, the front side of the slider seat is provided with guide grooves on both sides of the installation cavity, and a driving port is provided at the top of the installation cavity.

[0007] In a preferred embodiment of the present invention, guide blocks corresponding to the guide grooves are provided on both sides of the upper ejector plate, and a sliding groove corresponding to the longitudinal direction of the driving port is provided on the back.

[0008] In a preferred embodiment of the present invention, a positioning groove corresponding to the movable insert assembly is provided on the lower ejector plate.

[0009] In a preferred embodiment of the present invention, the movable insert assembly includes a PIN gear movable insert, a movable insert fixing block, a cushion block, a return pin and a first spring.

[0010] In a preferred embodiment of the present invention, the PIN tooth position movable insert is fixed on the front side of the movable insert fixing block, the front end of the PIN tooth position movable insert passes through the upper ejector plate and the slider, the top front side of the movable insert fixing block is provided with a first inclined surface, the back of the movable insert fixing block is provided with a pad, the back array of the pad is provided with multiple return pins corresponding to the lower ejector plate, and the return pin is sleeved with a first spring.

[0011] In a preferred embodiment of the present invention, the extrusion assembly includes a toggle clamp and an extrusion block.

[0012] In a preferred embodiment of the present invention, the toggle clamp is fixed to the top of the slider seat, and the extrusion block is fixed to the driving end of the toggle clamp in an inverted L-shaped structure. The longitudinal end of the extrusion block is correspondingly arranged in the slide groove, and the transverse end is located above the lower ejector plate. The bottom rear side of the extrusion block is provided with a second inclined surface corresponding to the first inclined surface of the movable insert fixing block.

[0013] In a preferred embodiment of the present invention, a plurality of second springs are provided in an array on the back of the lower ejector plate and positioned correspondingly to the slider seat.

[0014] In a preferred embodiment of the present invention, a slider limiter is correspondingly provided at the bottom of the slider seat, and a cylinder limiting screw is correspondingly provided at the bottom forward side of the cylinder connecting block.

[0015] The beneficial effects of the utility model are as follows: the combined slider mechanism for realizing sequential action in the PIN insert plastic mold pointed out by the utility model solves the problems of PIN teeth in the undercut area of the insert plastic mold easily hitting the mold, easily generating flashing, and repeated mold repair, etc., greatly reduces the cost of hardware tooth repair and maintenance, shortens the early development and later maintenance time, and has a stable and reliable structure, and reduces the precision requirements for the hardware teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0017] Figure 1 This is an exploded view of a preferred embodiment of a combined slider mechanism for realizing sequential actions in a plastic mold for inserting a PIN insert of the utility model;

[0018] Figure 2 It is a cross-sectional view of a preferred embodiment of the combined slider mechanism for realizing sequential actions in a plastic mold for inserting PIN inserts of the utility model. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1 Combine Figure 2 As shown, the embodiment of the utility model includes:

[0021] The invention discloses a combined slider mechanism for realizing sequential actions in a PIN insert plastic mold, comprising a slider 1, an upper ejector plate 2, a movable insert assembly, an extrusion assembly, a lower ejector plate 3, a slider seat 4, an inclined guide column 5, a cylinder connecting block 6 and a cylinder 7.

[0022] The back of the slider 1 is fixed correspondingly to the front of the slider seat 4 .

[0023] The front portion of the slider seat 4 is provided with a concave mounting cavity 8 for mounting and positioning internal components.

[0024] The upper ejector plate 2 , the movable insert assembly and the lower ejector plate 3 are sequentially arranged in the installation cavity 8 .

[0025] The front side of the slider seat 4 is respectively concavely provided with guide grooves 9 on both sides of the installation cavity 8 for providing lateral movement guidance. A drive port 10 is provided at the top of the installation cavity 8 for facilitating longitudinal drive.

[0026] Guide blocks 11 are provided on both sides of the upper ejector plate 2 corresponding to the guide groove 9, and the upper ejector plate 2 can move linearly along the guide groove 9. A slide groove 12 corresponding longitudinally to the drive port 10 is provided on the back for providing longitudinal guidance.

[0027] The lower ejector plate 3 is provided with a positioning groove 13 corresponding to the movable insert assembly to facilitate installation and positioning.

[0028] The movable insert assembly includes a PIN tooth movable insert 14 , a movable insert fixing block 15 , a cushion block 16 , a return pin 17 and a first spring 18 .

[0029] The PIN tooth position movable insert 14 is fixed on the front side of the movable insert fixing block 15 , and the front end of the PIN tooth position movable insert 14 passes through the upper ejector plate 2 and the slider 1 and moves synchronously with the movable insert fixing block 15 .

[0030] The top front side of the movable insert fixing block 15 is provided with a first inclined surface 19 for cooperating with the driving.

[0031] A pad block 16 is provided on the back of the movable insert fixing block 15, and a plurality of return pins 17 are provided in an array on the back of the pad block 16 to correspond to the lower ejector plate 3 for positioning. A first spring 18 is sleeved on the return pin 17, and the return pin 17 is used for positioning and guiding with the lower ejector plate 3. The first spring 18 is used to drive the movable insert fixing block 15 after compression.

[0032] The squeezing assembly includes a toggle clamp 20 and a squeezing block 21 .

[0033] The toggle clamp 20 is fixed to the top of the slider seat 4 and is used to provide longitudinal driving force.

[0034] The extrusion block 21 is an inverted L-shaped structure fixed to the driving end of the toggle clamp 20. The longitudinal end of the extrusion block 21 is correspondingly arranged in the slide groove 12, and the transverse end is located above the lower ejector plate 3. A second inclined surface 27 is provided on the rear side of the bottom of the extrusion block 21, which corresponds to the first inclined surface 19 of the movable insert fixing block 15 in upper and lower directions. Driven by the toggle clamp 20, the extrusion block 21 moves longitudinally along the slide groove 12 and cooperates with the first inclined surface 19 of the movable insert fixing block 15 for driving.

[0035] The back array of the lower ejector plate 3 is provided with a plurality of second springs 22 corresponding to the slider seat 4 , and the lower ejector plate 3 is pushed forward by the second springs 22 in the mold opening state.

[0036] The top of the rear side of the slider seat 4 is provided with an oblique hole 23 corresponding to the oblique guide column 5. When the front mold is opened, the slider 1 moves backward under the action of the oblique guide column 5.

[0037] The two sides of the back of the slider seat 4 are connected to the cylinder connecting block 6 through equal height screws 24, and the driving end of the cylinder 7 is correspondingly connected to the back of the cylinder connecting block 6, and the slider 1 is driven by the cylinder 7 to continue to move backward to separate from the product.

[0038] The bottom of the slider seat 4 is provided with a slider stopper 25 for limiting the movement of the slider seat 4. The bottom forward side of the cylinder connecting block 6 is provided with a cylinder limiting screw 26 for limiting the forward movement of the cylinder connecting block 6.

[0039] Working principle: When closing the mold, after the insert is fixed in the rear mold, the oil cylinder 7 is used to move the slider 1 forward for a distance. The remaining space ensures that the insert can be placed in the rear mold. Because the lower ejector plate 3 pushes the PIN tooth position movable insert 14 out of the slider 1 for a distance under the action of the second spring 22, the PIN tooth position movable insert 14 has reached the predetermined position when the slider 1 is not in place. Before placing the insert, under the secondary ejection mechanism of the extrusion assembly, the PIN tooth position movable insert 14 retracts a distance of the PIN tooth length, so that the slider 1 does not contact the insert during the first movement. Within the operator's line of sight, the toggle clamp 20 is pulled, and the PIN tooth position movable insert 14 pops out under the action of the first spring 18, and the PIN tooth position is corrected and inserted into the matching position, thus avoiding the PIN tooth from hitting the mold. Next, the slider 1 is dialed in as a whole under the action of the inclined guide column 5.

[0040] In summary, the combined slider mechanism for realizing sequential action in the PIN insert plastic mold pointed out by the utility model solves the problems of PIN teeth in the undercut area of the insert plastic mold easily hitting the mold, easily generating flashing and repeated mold repair, etc., greatly reduces the cost of hardware tooth repair and maintenance, shortens the early development and later maintenance time, and has a stable and reliable structure, which reduces the precision requirements for the hardware teeth.

[0041] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A modular slider mechanism for sequential action in a PIN insert plastic mold, characterized in that: It includes a slider, an upper ejector plate, a movable insert assembly, an extrusion assembly, a lower ejector plate, a slider seat, an inclined guide column, a cylinder connecting block and a cylinder. The back of the slider is fixed corresponding to the front of the slider seat. The front of the slider seat is provided with a concave mounting cavity. The upper ejector plate, the movable insert assembly and the lower ejector plate are sequentially arranged in the mounting cavity. The extrusion assembly is arranged on the top of the slider seat corresponding to the movable insert assembly. The top of the rear side of the slider seat is provided with an inclined hole corresponding to the inclined guide column. The two sides of the back of the slider seat are connected to the cylinder connecting block by equal height screws. The driving end of the cylinder is connected correspondingly to the back of the cylinder connecting block.

2. The combined slider mechanism for realizing sequential actions in the PIN insert plastic mold according to claim 1, characterized in that: The front side of the slider seat is provided with guide grooves on both sides of the installation cavity, and a driving port is provided on the top of the installation cavity.

3. The combined slider mechanism for realizing sequential actions in a PIN insert plastic mold according to claim 2, characterized in that: Guide blocks corresponding to the guide grooves are arranged on both sides of the upper ejector plate, and a sliding groove corresponding to the longitudinal direction of the driving port is arranged on the back.

4. The combined slider mechanism for realizing sequential actions in a PIN insert plastic mold according to claim 1, characterized in that: The lower ejector plate is provided with a positioning groove corresponding to the movable insert assembly.

5. The combined slider mechanism for realizing sequential actions in a PIN insert plastic mold according to claim 3, characterized in that: The movable insert assembly includes a PIN tooth movable insert, a movable insert fixing block, a cushion block, a return pin and a first spring.

6. The combined slider mechanism for realizing sequential actions in a PIN insert plastic mold according to claim 5, characterized in that: The PIN tooth position movable insert is fixed on the front side of the movable insert fixing block, and the front end of the PIN tooth position movable insert passes through the upper ejector plate and the slider correspondingly. A first inclined surface is provided on the front side of the top of the movable insert fixing block, and a pad is provided on the back of the movable insert fixing block. A plurality of return pins are provided in an array on the back of the pad and are positioned correspondingly with the lower ejector plate, and a first spring is sleeved on the return pin.

7. The combined slider mechanism for realizing sequential actions in a PIN insert plastic mold according to claim 6, characterized in that: The squeezing assembly includes a toggle clamp and a squeezing block.

8. The combined slider mechanism for realizing sequential actions in a PIN insert plastic mold according to claim 7, characterized in that: The toggle clamp is fixed on the top of the slider seat, and the extrusion block is fixed on the driving end of the toggle clamp in an inverted L-shaped structure. The longitudinal end of the extrusion block is correspondingly arranged in the slide groove, and the transverse end is located above the lower ejector plate. The bottom rear side of the extrusion block is provided with a second inclined surface corresponding to the first inclined surface of the movable insert fixing block.

9. The combined slider mechanism for realizing sequential actions in a PIN insert plastic mold according to claim 1, characterized in that: The back array of the lower ejector plate is provided with a plurality of second springs which are positioned correspondingly to the slider seat.

10. The combined slider mechanism for realizing sequential actions in a PIN insert plastic mold according to claim 1, characterized in that: A slider limiter is correspondingly provided at the bottom of the slider seat, and a cylinder limiting screw is correspondingly provided at the bottom forward side of the cylinder connecting block.

Images