Mold inner pulling sliding block anti-retreating assembly convenient to maintain

Abstract

The utility model discloses a convenient-to-maintain mould inner pulling slide block anti-back assembly, which comprises an oil cylinder, a slide block, a guide seat, a driving seat, a cushion block and a stop block, the driving seat can be driven by the oil cylinder to linearly move and is arranged on the guide seat, the slide block is arranged in front of the driving seat and obliquely extends upwards, a T-shaped groove is obliquely arranged at the front end of the driving seat, and the cushion block is arranged in the T-shaped groove. A T-shaped block located in the T-shaped groove is arranged at the tail of the sliding block, the stop block is arranged in the T-shaped groove and located below the T-shaped block, the T-shaped block comprises a core plate and guide blocks arranged on the two sides of the bottom of the core plate, a gap of several millimeters is reserved between the front faces of the guide blocks and the inner wall of the T-shaped groove, and a first positioning groove corresponding to the cushion block is formed in the side, facing the driving base, of the T-shaped block in an inwards-concave mode. And the tail part of the cushion block is arranged in the first positioning groove. According to the mode, the convenient-to-maintain anti-retreating assembly for the inner pulling sliding block of the mold can be used for retreating and limiting the sliding block, and is simple in structure and convenient to adjust and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold field especially, and it is a mold internal extraction sliding block anti -retreating subassembly convenient to maintain. BACKGROUND

[0002] If the injection part is long or the fixed mold has internal extraction, the oil cylinder driven sliding block can be used for core pulling. In order to reduce the cost of injection part, the wall thickness of product is often reduced on the basis of guaranteeing structural strength. The thinner the wall thickness is, the greater the filling pressure of injection molding machine is required. When the injection filling pressure is too large, the force on the sliding block is too large, and the oil cylinder will retreat.

[0003] In addition, if the glue position area of the undercut position is large, the injection pressure during injection is large, and the oil cylinder will also retreat, causing the product to be overglued and resulting in product defects. In order to prevent the forced retreat of the sliding block, the utility model discloses an oil cylinder driven internal extraction sliding block anti-retreating structure in the prior art with the application number 2023219366739. The anti-retreating floating block is set to prevent the product from being unqualified due to the retreat of the sliding block seat, but the structure is relatively complex, the convenience of adjustment and maintenance is poor, and improvement is needed. UTILITY MODEL CONTENT

[0004] The utility model mainly solves the technical problem to provide a kind of mold internal extraction sliding block anti-retreating subassembly convenient to maintain, prevent the force retreat of sliding block, improve the convenience of adjustment and maintenance.

[0005] To solve the above technical problems, one technical scheme of the utility model is to provide a kind of mold internal extraction sliding block anti-retreating subassembly convenient to maintain, comprising: oil cylinder, sliding block, guide base, drive seat, pad and stop block, the drive seat can be linearly moved by oil cylinder driving and be set on guide base, the sliding block is set in the front of drive seat and extends obliquely upwards, the front end of drive seat is obliquely arranged with T-shaped groove, the tail of sliding block is provided with T-shaped block in T-shaped groove, the stop block is set in T-shaped groove and below T-shaped block, the T-shaped block includes core plate and guide block arranged on both sides of the bottom of core plate, the front surface of guide block and the inner wall of T-shaped groove are left with several millimeters gap, the side of T-shaped block recessed towards drive seat is provided with the first positioning groove corresponding with pad, and the tail of pad is set in the first positioning groove.

[0006] In a preferred embodiment of the utility model, the oil cylinder is located behind the drive seat, and a drive rod is arranged between the oil cylinder and the drive seat.

[0007] In a preferred embodiment of the utility model, a limiting block corresponding to the guide base is arranged on the drive rod.

[0008] In a preferred embodiment of the utility model, the oil cylinder side is provided with travel switch mounting seat, two travel switches are provided on the travel switch mounting seat and are spaced apart along the axial direction of the oil cylinder, and an L-shaped trigger lever is arranged on the limiting block and extends between the two travel switches.

[0009] In a preferred embodiment of the utility model, a second positioning groove corresponding to the stop block is arranged in the T-shaped groove, and the tail of the stop block is arranged in the second positioning groove.

[0010] In a preferred embodiment of the utility model, a first screw connected with the driving seat is arranged in the stop block.

[0011] In a preferred embodiment of the utility model, a counterbore is arranged in the cushion block, and a second screw connected with the T-shaped block is arranged in the counterbore.

[0012] In a preferred embodiment of the utility model, the bottom of the sliding block is provided with a flat surface matched with the top of the stop block.

[0013] The utility model discloses a convenient-to-maintain mold inner extraction sliding block anti-retreating assembly, which utilizes the oil cylinder to drive the driving seat to move forward on the guide base, realizes the forward movement of the sliding block through the cooperation of the T-shaped groove and the T-shaped block, and after the forward movement of the sliding block is completed, the bottom of the sliding block is in contact with the top of the stop block, the sliding block is limited to retreat, then the mold is closed and injection molding is carried out, so that the stability of the sliding block during injection molding and the qualified rate of injection molded products are improved, after the mold is opened, the oil cylinder drives the driving seat to move backward on the guide base first, so that the front surface of the guide block is in contact with the inner wall of the T-shaped groove, at this time, the bottom of the sliding block is no longer in contact with the top of the stop block, the oil cylinder continues to drive the driving seat to move backward on the guide base, realizes the backward movement of the sliding block through the cooperation of the T-shaped groove and the T-shaped block, and the structure is simple and reliable, the cushion block and the stop block can be separately disassembled and replaced, and the convenience of adjustment and maintenance is good. ACCURATE DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor.

[0015] Figure 1 It is a structure schematic view of a preferred embodiment of the utility model convenient-to-maintain mold inner extraction sliding block anti-retreating assembly.

[0016] Figure 2 It is Figure 1 A-A sectional view of the utility model.

[0017] Figure 3 yes Figure 1 A three-dimensional image. Detailed Implementation

[0018] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Please see Figures 1-3 The embodiments of this utility model include:

[0020] like Figure 1 The mold-in-mold sliding block anti-reverse assembly shown includes: a hydraulic cylinder 1, a sliding block 4, a guide seat 2, a drive seat 3, a pad block 12, and a stop block 14. The drive seat 3 is linearly moved on the guide seat 2 by the hydraulic cylinder 1. The guide seat 2 is provided with a guide rail corresponding to the drive seat 3 to improve the smoothness of the movement of the drive seat 3.

[0021] In this embodiment, the hydraulic cylinder 1 is located behind the drive seat 3, and a drive rod 7 is provided between the hydraulic cylinder 1 and the drive seat 3. The hydraulic cylinder 1 can be extended and retracted by the controller of the injection molding machine to realize the forward and backward drive of the hydraulic cylinder 1 to the drive seat 3.

[0022] like Figure 3 As shown, a limiting block 11 corresponding to the guide seat 2 is provided on the drive rod 7. The limiting block 11 moves forward with the drive rod 7 and cooperates with the guide seat 2 to limit the forward movement, thereby improving safety. A limit switch mounting seat 8 is provided on one side of the hydraulic cylinder 1. Two limit switches 9 are arranged at intervals along the axial direction of the hydraulic cylinder 1 on the limit switch mounting seat 8. The limit switches 9 are connected to the controller of the injection molding machine to send signals.

[0023] An L-shaped trigger rod 10 extending between two limit switches 9 is provided on the limit block 11. During the process of the hydraulic cylinder 1 driving the drive rod 7 to move back and forth, the controller can achieve precise extension and retraction control of the hydraulic cylinder 1 through the cooperation of the L-shaped trigger rod 10 and the two limit switches 9.

[0024] The slider 4 is positioned in front of the drive seat 3 and extends obliquely upward. The slider 4 is installed in the injection mold. The injection mold is usually equipped with a guide rail or groove corresponding to the slider 4 to guide the slider 4 and avoid offset problems.

[0025] A T-shaped groove 6 is obliquely placed at the front end of the drive seat 3, and a T-shaped block 5 located in the T-shaped groove 6 is provided at the tail end of the slider 4. Through the cooperation of the T-shaped block 5 and the T-shaped groove 6, the drive seat 3 indirectly drives the slider 4.

[0026] The stop block 14 is arranged in the T-shaped slot 6 and below the T-shaped block 5, as shown. Figure 2 The inner recess of the T-shaped slot 6 is provided with a second positioning groove corresponding to the stop block 14, the tail of the stop block 14 is arranged in the second positioning groove, and the assembly is convenient, so that the stop block 14 moves forward and backward with the driving seat 3. In this embodiment, the first screw 15 connected with the driving seat 3 is arranged in the stop block 14, which improves the convenience of disassembly and maintenance of the stop block 14.

[0027] As shown in the figure, Figure 3 The T-shaped block 5 includes a core plate 51 and guide blocks 52 arranged on both sides of the bottom of the core plate 51, forming a T-shaped structure. In this embodiment, the T-shaped block 5 and the sliding block 4 adopt an integrated steel structure, which has good synchronicity and high structural strength.

[0028] The front surface of the guide block 52 leaves a gap of several millimeters with the front inner wall of the T-shaped slot 6, and in this embodiment, a clearance of 4mm is required. After the driving seat 3 retreats a certain distance, the front surface of the guide block 52 contacts the front inner wall of the T-shaped slot 6, so that the sliding block 4 can be dragged to move backward to reset. The inner recess of the side of the T-shaped block 5 facing the driving seat is provided with a first positioning groove 41 corresponding to the pad 12, and the tail of the pad 12 is arranged in the first positioning groove 41. The outer part of the pad 12 protrudes from the first positioning groove 41, as shown in the figure, and at this time the pad 12 contacts the rear inner wall of the T-shaped slot 6, so that a clearance is formed between the front surface of the guide block 52 and the front inner wall of the T-shaped slot 6. By replacing the pad 12 with different thickness, the clearance of the clearance can be adjusted. Figure 2

[0029] A counterbore is arranged in the pad 12, and a second screw 13 connected with the T-shaped block 5 is arranged in the counterbore, which facilitates the fixation and replacement of the pad 12 and improves the convenience of maintenance.

[0030] As shown in the figure, Figure 2 The bottom of the sliding block 4 is provided with a flat surface 42 matched with the top of the stop block 14, forming a retreat prevention structure. The forward movement of the driving seat 3 on the guide seat 2 by the oil cylinder 1 realizes the forward movement of the sliding block 4 through the cooperation of the T-shaped slot 6 and the T-shaped block 5. After the sliding block 4 moves forward to the position, the flat surface 42 at the bottom of the sliding block 4 contacts the top of the stop block 14, limiting the backward movement of the sliding block 4, and then the mold is closed and injection molded. The stop block 14 prevents the backward movement of the sliding block 4 under stress, improving the stability of the sliding block 4 during injection molding and the qualification rate of injection molded products.

[0031] After the mold is opened, the oil cylinder 1 drives the driving seat 3 to move backward on the guide seat 2, so that the front surface of the guide block 52 contacts the inner wall of the T-shaped slot 6, eliminating the clearance. At this time, the flat surface 42 at the bottom of the sliding block 4 no longer contacts the top of the stop block 14, and the oil cylinder 1 continues to drive the driving seat 3 to move backward, realizing the backward movement of the sliding block 4 to reset through the cooperation of the T-shaped slot 6 and the T-shaped block 5.

[0032] ​In summary, the mold in-mold slide anti-reverse component disclosed in this utility model is easy to maintain. It has a simple structure, avoids the slide retraction during the injection molding process, and is more reliable in use. The pad block and stop block can be disassembled and replaced, making it convenient for individual adjustment and maintenance.

[0033] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A mold-mounted slide block anti-reverse assembly that is easy to maintain, characterized in that, include: The system comprises a hydraulic cylinder, a slider, a guide seat, a drive seat, a pad, and a stop block. The drive seat is linearly movable on the guide seat via the hydraulic cylinder. The slider is positioned in front of the drive seat and extends obliquely upward. The front end of the drive seat has an oblique T-shaped groove. The tail end of the slider has a T-shaped block located in the T-shaped groove. The stop block is located in the T-shaped groove and below the T-shaped block. The T-shaped block includes a core plate and guide blocks on both sides of the bottom of the core plate. A gap of several millimeters is left between the front of the guide block and the inner wall of the T-shaped groove. The side of the T-shaped block facing the drive seat has a recessed first positioning groove corresponding to the pad. The tail end of the pad is located in the first positioning groove.

2. The easy-to-maintain mold in-mold sliding block anti-reverse assembly according to claim 1, characterized in that, The hydraulic cylinder is located behind the drive base, and a drive rod is provided between the hydraulic cylinder and the drive base.

3. The easy-to-maintain mold in-mold slide anti-reverse assembly according to claim 2, characterized in that, The drive rod is provided with a limiting block corresponding to the guide seat.

4. The easy-to-maintain mold in-mold slide anti-reverse assembly according to claim 3, characterized in that, A limit switch mounting base is provided on one side of the hydraulic cylinder. Two limit switches are arranged at intervals along the axial direction of the hydraulic cylinder on the limit switch mounting base. An L-shaped trigger rod extending between the two limit switches is provided on the limit block.

5. The easy-to-maintain mold in-mold slide anti-reverse assembly according to claim 1, characterized in that, The T-shaped groove is recessed and has a second positioning groove corresponding to the stop block, and the tail of the stop block is located in the second positioning groove.

6. The easy-to-maintain mold in-mold slide anti-reverse assembly according to claim 5, characterized in that, The stop block is provided with a first screw that connects to the drive seat.

7. The easy-to-maintain mold in-mold slide anti-reverse assembly according to claim 1, characterized in that, The pad has a countersunk hole, and a second screw that connects to the T-shaped block is installed in the countersunk hole.

8. The easy-to-maintain mold in-mold slide anti-reverse assembly according to claim 1, characterized in that, The bottom of the slider is provided with a plane that mates with the top of the stop block.

Images