A slider demolding device

Abstract

The utility model discloses a slider demolding device, including the forming seat, the one end of forming seat is provided with the slider seat, the slider seat is provided with the demolding mechanism on the slope, the demolding mechanism includes the coaxial setting drive assembly and the insert group, the drive assembly includes at least the slider of placing in the slider seat, the inclined guide pillar of the slider and the slider seat, the insert group includes the first insert of with slider fixed connection and the second insert of setting in the first insert, the end profile of first insert is equivalent with the outer profile of injection molding part. The utility model has the beneficial effects of: through first insert and second insert respectively to the gap and the outer wall of abutting on injection molding part, using slider to drive first insert and / or second insert to remove to realize the demolding of two parts, effectively avoid the warping or deformation of injection molding part in the demolding process, guarantee the demolding quality.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding demolding technology, and in particular relates to a slider demolding device. Background Technology

[0002] In the field of injection molding, demolding mechanisms using sliders and inclined guide pillars are widely used due to their advantages such as simple structure and low manufacturing cost; for example, CN219522944U discloses "A mold core-pulling structure for easy demolding". This traditional demolding method achieves core-pulling action by driving the slider to make linear motion through the inclined guide pillar, which is suitable for conventional core-pulling demolding or single demolding scenarios.

[0003] However, this type of demolding method exhibits significant limitations when the injection molded part has special structural features: for injection molded parts with local cantilever structures or gaps between the part and the main body (such as thin-walled reinforcing ribs, hollow decorative parts, etc.), directly using a slider and inclined guide post for demolding will generate uneven demolding force at the moment of demolding. When this force acts at the root of the cantilever structure, it is prone to causing the following defects: 1. Localized warping deformation: Plastic deformation occurs in the gaps due to a lack of effective support; 2. Surface quality deterioration: Concentrated demolding force causes stress lines to appear on the product surface; 3. Dimensional deviation: Cumulative deformation affects assembly accuracy.

[0004] Existing improvement solutions mostly alleviate the above problems by adding ejection mechanisms or optimizing the angle of inclined guide pillars, but they still do not fundamentally solve the core contradiction of asymmetric demolding force distribution. Especially when dealing with irregularly shaped and complex parts, there are still technical bottlenecks such as the risk of mechanism interference and low molding yield. Therefore, there is an urgent need to develop a new demolding mechanism that can adapt to the characteristics of the gap structure and achieve multi-directional balanced demolding. Utility Model Content

[0005] The purpose of this invention is to solve the above-mentioned problems existing in the prior art and to provide a slider demolding device.

[0006] The objective of this utility model is achieved through the following technical solution: A slider demolding device includes a molding base for accommodating an injection molded part. A slider seat is provided at one end of the molding base, and a demolding mechanism is inclinedly disposed on the slider seat. The demolding mechanism includes a drive assembly and an insert assembly coaxially arranged. The drive assembly includes at least a slider placed on the slider seat and an inclined guide post penetrating the slider and the slider seat. The insert assembly includes a first insert fixedly connected to the slider and a second insert sleeved within the first insert. The end profile of the first insert corresponds to the outer profile of the injection molded part. In an initial state, the end of the first insert penetrates the injection molded part and abuts against the mold core on the molding base; the end of the second insert abuts against the outer wall of the injection molded part. In a first demolding state, the drive assembly is activated, and the inclined guide post drives the slider to move away from the molding base, so that the end of the first insert gradually disengages from the injection molded part, while the end of the second insert abuts against the outer wall of the injection molded part. In a second demolding state, the inclined guide post continues to drive the slider to move away from the molding base until the end of the second insert separates from the injection molded part.

[0007] Preferably, a pull rod seat is fixed at the end of the slider seat away from the molding seat; the driving assembly further includes a pull rod that passes through the pull rod seat and is coaxially arranged with the slider, the pull rod being disposed at the end of the slider away from the first insert; and the pull rod moves synchronously with the slider.

[0008] Preferably, a compression spring is sleeved on the pull rod, and the two ends of the compression spring abut against the input end of the pull rod and the outer side of the pull rod seat, respectively; during the first demolding and the second demolding process, the compression spring gradually relaxes until the compression spring is fully relaxed, and at the same time the first insert and the second insert are completely separated from the injection molded part.

[0009] Preferably, the inclined guide post includes an integrally formed vertical connecting part and an inclined guiding part, the top of the connecting part has an external transplanting mechanism, and the guiding part passes through the slider and the slider seat.

[0010] Preferably, a mounting groove is formed on the side of the guide portion near the first insert, a pad is fixed in the mounting groove, and a triangular guide groove is formed on the pad; during the first demolding process, the groove wall of the guide groove always abuts against the input end of the second insert, so that the end of the second insert abuts against the outer wall of the injection molded part; in the second demolding state, the guide groove is disengaged from the second insert.

[0011] Preferably, the second insert is cross-shaped, with its input end penetrating through the side wall of the slider and abutting against the pad; the output end of the first insert connected to the slider forms a receiving groove, the cross-shaped portion of the second insert is located in the receiving groove, and a spring is provided between the two.

[0012] Preferably, the first insert also has a receiving hole communicating with the receiving groove, and the main body of the second insert is located in the receiving hole.

[0013] The advantages of this utility model's technical solution are mainly reflected in: The first and second inserts respectively abut against the gap and outer wall of the injection molded part. The slider drives the first and / or second inserts to move to achieve demolding of the two parts, effectively avoiding warping or deformation of the injection molded part during demolding and ensuring demolding quality. The slider is subjected to force by tie rod and compression spring during demolding. At the same time, the compression spring overcomes the gravity and friction of the slider and insert assembly to drive them to move, effectively preventing the slider and insert assembly from moving down during demolding and ensuring a smooth demolding process. A spring is provided in the first insert. The spring and the guide groove on the pad are used to ensure that the end of the second insert always abuts against the outer wall of the injection molded part during one demolding process, so that the first insert moves relative to the second insert, while avoiding the injection molded part from warping during demolding. Attached Figure Description

[0014] Figure 1 : Structural diagram of the injection molded part of this utility model; Figure 2 : A perspective view of a preferred embodiment of the present invention; Figure 3 Top view of a preferred embodiment of this utility model; Figure 4 Cross-sectional view of the preferred embodiment of this utility model in the first demolding state; Figure 5 : Cross-sectional view of the secondary demolding state of the preferred embodiment of this utility model; Figure 6 : Cross-sectional view of the final demolding state of the preferred embodiment of this utility model. Detailed Implementation

[0015] The purpose, advantages, and features of this utility model will be illustrated and explained through the following non-limiting description of preferred embodiments. These embodiments are merely typical examples of applying the technical solutions of this utility model, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by this utility model.

[0016] In the description of the solution, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Also, in the description of the solution, with the operator as a reference, the direction closer to the operator is the proximal end, and the direction farther from the operator is the distal end.

[0017] like Figures 1 to 2 As shown, this utility model discloses a slider demolding device, including a device for accommodating, for example, Figure 1 The molding base 1 of the injection molded part shown has a slider seat 20 at one end, and a demolding mechanism 2 is inclinedly arranged on the slider seat 20. Specifically, as shown... Figure 2 and Figure 3 As shown, the demolding mechanism 2 includes a drive assembly 21 and an insert assembly 22 arranged coaxially; the end of the insert assembly 22 abuts against the injection molded part and is driven by the drive assembly 21 to achieve demolding.

[0018] Specifically, such as Figure 4 As shown, the driving assembly 21 includes at least a slider 211 placed on the slider seat 20, and an inclined guide post 212 passing through the slider 211 and the slider seat 20. Furthermore, the upper surface of the slider seat 20 is provided with an inclined slide for placing the slider 211. The slide is lower at one end near the molding seat 1 and higher at the other end away from the molding seat 1, thus tilting the slider 211.

[0019] Furthermore, the inclined guide post 212 includes an integrally formed vertical connecting part and an inclined guide part, with an external transfer mechanism at the top of the connecting part, and the guide part penetrating the slider 211 and the slider seat 20. A mounting groove is formed on the guide part near the first insert 221, and a pad 215 is fixed within the mounting groove. A triangular guide groove 216 is formed on the pad 215. During the first demolding process, the wall of the guide groove 216 always abuts against the input end of the second insert 222, so that the end of the second insert 22 abuts against the outer wall of the injection molded part; in the second demolding state, the guide groove 216 disengages from the second insert 222.

[0020] like Figures 4 to 6As shown, a pull rod seat 210 is fixed to the end of the slider seat 20 away from the molding seat 1. The drive assembly 21 also includes a pull rod 213 that passes through the pull rod seat 210 and is coaxially arranged with the slider 211. The pull rod 213 is located at the end of the slider 211 away from the first insert 221; and the pull rod 213 moves synchronously with the slider 211. That is, during the first demolding and the second demolding process, the pull rod 213 gradually moves away from the molding seat 1.

[0021] Furthermore, a compression spring 214 is sleeved on the pull rod 213, with its two ends abutting against the input end of the pull rod 213 and the outer side of the pull rod seat 210, respectively. During the first and second demolding processes, the compression spring 214 gradually relaxes until it is fully relaxed, at which point the first insert 221 and the second insert 222 completely detach from the injection molded part. During demolding, the compression spring 214 overcomes the friction and gravity of the slider 211, allowing the slider 211 to move steadily upward and backward, preventing it from moving downward, thus ensuring a smooth demolding process and excellent demolding quality.

[0022] like Figures 4 to 6 As shown, the insert assembly 22 includes a first insert 221 fixedly connected to the slider 211 and a second insert 222 sleeved within the first insert 221. The end profile of the first insert 221 corresponds to the outer profile of the injection molded part.

[0023] The second insert 222 is cross-shaped, with the cross-shaped portion located at the input end of the second insert 222. Further, the input end of the second insert 222 penetrates the side wall of the slider 211 and abuts against the pad 215. Additionally, the output end of the first insert 221, connected to the slider 211, forms a receiving groove 223. The cross-shaped portion of the second insert 222 is located within the receiving groove 223, and a spring 224 is provided between them. The spring enables the second insert 222 to move relative to the first insert 221, while simultaneously providing cushioning between the second insert 222 and the pad 215, preventing hard contact and extending their service life.

[0024] The first insert 221 also has a receiving hole that communicates with the receiving groove 223, and the main body of the second insert 222 is located in the receiving hole.

[0025] like Figure 2In the initial state shown, the end of the first insert 221 penetrates the injection molded part and abuts against the mold core 10 on the molding base 1; and a stepped surface is formed on the upper end of the first insert 221, which abuts against the outer surface of the injection molded part in this state. The end of the second insert 222 abuts against the outer wall of the injection molded part. Figure 4 In the first demolding state shown, the drive assembly 21 is activated, and the inclined guide post 212 drives the slider 211 to move away from the molding seat 1, so that the end of the first insert 221 gradually disengages from the injection molded part, while the end of the second insert 222 abuts against the outer wall of the injection molded part. Figure 5 In the secondary demolding state shown, the inclined guide post 212 continues to drive the slider 211 to move away from the molding seat 1 until the end of the second insert 222 separates from the injection molded part. Figure 6 In the final demolding state shown, the compression spring 214 on the pull rod 213 releases its stored force and drives the pull rod 213 to move further away from the molding seat 1, thereby driving the slider 211 and the insert assembly 22 away from the molding seat 1, until the ends of the first insert 221 and the second insert 222 are completely located outside the injection molded part, so that the injection molded part can be demolded.

[0026] This utility model has many other embodiments. All technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A slider demolding apparatus characterized by comprising: The system includes a molding base (1) for accommodating an injection molded part, with a slider seat (20) at one end of the molding base (1). A demolding mechanism (2) is inclinedly arranged on the slider seat (20). The demolding mechanism (2) includes a drive assembly (21) and an insert assembly (22) arranged coaxially. The drive assembly (21) includes at least a slider (211) placed on the slider seat (20) and an inclined guide post (212) passing through the slider (211) and the slider seat (20). The insert assembly (22) includes a first insert (221) fixedly connected to the slider (211) and a second insert (222) sleeved within the first insert (221). The end contour of the first insert (221) is similar to the outer contour of the injection molded part. In the initial state, the end of the first insert (221) penetrates the injection molded part and abuts against the mold core (10) on the molding seat (1); the end of the second insert (222) abuts against the outer wall of the injection molded part; in the first demolding state, the drive assembly (21) is activated, and the inclined guide post (212) drives the slider (211) to move away from the molding seat (1), so that the end of the first insert (221) gradually comes out of the injection molded part, while the end of the second insert (222) abuts against the outer wall of the injection molded part; in the second demolding state, the inclined guide post (212) continues to drive the slider (211) to move away from the molding seat (1) until the end of the second insert (222) separates from the injection molded part.

2. The slider demolding device according to claim 1, characterized in that: The slider seat (20) is fixed with a pull rod seat (210) at one end away from the molding seat (1); the drive assembly (21) also includes a pull rod (213) that passes through the pull rod seat (210) and is coaxially arranged with the slider (211), the pull rod (213) is arranged at one end of the slider (211) away from the first insert (221); and the pull rod (213) moves synchronously with the slider (211).

3. A sliding block demolding device according to claim 2, characterized in that: A compression spring (214) is sleeved on the pull rod (213), and the two ends of the compression spring (214) abut against the input end of the pull rod (213) and the outer side of the pull rod seat (210), respectively; during the first demolding and the second demolding process, the compression spring (214) gradually relaxes until the compression spring (214) is fully relaxed, and at the same time the first insert (221) and the second insert (222) are completely separated from the injection molded part.

4. The slider demolding device according to claim 3, characterized in that: The inclined guide post (212) includes an integrally formed vertical connecting part and an inclined guide part, the top of the connecting part is an external transplanting mechanism, and the guide part passes through the slider (211) and the slider seat (20).

5. A slider demolding device according to claim 4, characterized in that: A mounting groove is formed on the side of the guide portion near the first insert (221), and a pad (215) is fixed in the mounting groove. A triangular guide groove (216) is formed on the pad (215). During the first demolding process, the groove wall of the guide groove (216) always abuts against the input end of the second insert (222) so that the end of the second insert (222) abuts against the outer wall of the injection molded part. In the second demolding state, the guide groove (216) disengages from the second insert (222).

6. A slider demolding device according to claim 5, characterized in that: The second insert (222) is cross-shaped, with its input end penetrating the side wall of the slider (211) and abutting against the pad (215); the output end of the first insert (221) connected to the slider (211) forms a receiving groove (223), the cross-shaped part of the second insert (222) is located in the receiving groove (223), and a spring (224) is provided between the two.

7. A slider demolding device according to claim 6, characterized in that: The first insert (221) also has a receiving hole that communicates with the receiving groove (223), and the main body of the second insert (222) is located in the receiving hole.

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