Power-assisted demolding anti-deformation structure for injection molded part

Abstract

The utility model discloses a power-assisted demolding anti-deformation structure for an injection molded part, and particularly relates to the technical field of injection demolding, a middle cross-shaped jacking plate is embedded into the top end of a lower injection molding mold, and a linkage anti-deformation mechanism is arranged on the outer wall of the lower injection molding mold; the linkage anti-deformation mechanism comprises a plurality of V-shaped demolding strips arranged on the outer wall of the lower injection molding mold, one side of each V-shaped demolding strip is fixedly connected with a linkage supporting ring, and the bottom end of each linkage supporting rod is fixedly connected with a linkage supporting rod penetrating through the lower injection molding mold. The linkage anti-deformation mechanism is arranged, an electric cylinder drives a linkage supporting block to move upwards, a cross linkage plate drives four linkage supporting columns to move upwards at the same time, a plurality of V-shaped demolding strips drive the edge of an injection molding part to move upwards synchronously, multi-point synchronous demolding is conducted on the middle portion and the edge of the injection molding part, and deformation damage is avoided when the injection molding part is demolded; and the deformation resistance is better.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding demoulding, and more specifically, to an injection molded part demoulding assistance and anti-deformation structure. Background Art

[0002] During the injection molding process, when the plastic melt is injected into the mold, a molded part is formed inside the mold. After the molded part cools and solidifies, it needs to be removed from the mold. Since the molded part usually has complex shapes and sizes and may have subtle protrusions or grooves, the demolding process may become difficult, so an anti-deformation structure is needed to prevent the molded part from deformation and damage.

[0003] In the existing public documents, the utility model patent with Chinese patent publication number CN210126259U discloses a demoulding structure for injection molds that is easy to demould. The finished plastic parts have horizontal plates or heterogeneous structures inside, which will penetrate into the punch core and jam the mold. Directly removing the plastic parts will cause irreparable quality damage to the plastic parts. This patent mainly solves the problem that the existing plastic parts with horizontal plates or heterogeneous structures inside are inconvenient to demould; however, the demoulding technology still has the following defects:

[0004] The above demoulding technology requires extrusion on both sides to assist demoulding when demoulding the injection molded parts. This results in that when the injection molded parts are demoulded, the two sides are stressed while other positions in the middle are difficult to be evenly stressed and demoulded, which can easily cause uneven stress on the injection molded parts, resulting in permanent deformation and damage, and the anti-deformation property is poor. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides an injection molded part demoulding and anti-deformation structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection molded part demoulding and anti-deformation structure, comprising a lower injection molding mold, a middle cross top pressure plate is embedded in the top of the lower injection molding mold, and a linkage anti-deformation mechanism is provided on the outer wall of the lower injection molding mold; the linkage anti-deformation mechanism comprises a plurality of V-shaped demoulding strips arranged on the outer wall of the lower injection molding mold, and a linkage support ring is fixedly connected to one side of the V-shaped demoulding strip, the bottom end of the linkage support ring is fixedly connected to a linkage support rod that passes through the lower injection molding mold, a cross linkage plate is fixedly connected to the bottom end of the linkage support rod, a linkage support block is welded to the bottom end of the cross linkage plate, an electric cylinder is installed at the bottom end of the linkage support block, and a plurality of linkage pillars are arranged in a circular ring with equal distances at the bottom end of the linkage support ring.

[0007] Preferably, the linkage support rod and the middle cross top pressure plate are both slidably connected to the lower injection molding mold, the outer wall of the linkage support rod is polished and ground, the linkage support ring and the cross linkage plate are fixedly connected to the linkage pillar, the center point of the linkage support block and the center point of the linkage support rod are on the same vertical line, a support block is fixedly connected to one side of the electric cylinder, an upper injection mold is installed above the middle cross top pressure plate, two slidably connected guide pillars are penetrated at the top of the upper injection mold, and the guide pillars are slidably connected to the upper injection mold, an injection hole is penetrated at the top of the upper injection mold and located at its center point, a plurality of connecting pillars are fixedly connected to the bottom end of the lower injection molding mold and near its edge line, the plurality of connecting pillars are arranged equidistantly in a circular ring, a support base is welded to the bottom end of the connecting pillar, and the top cross-sectional area of ​​the support base is smaller than the bottom cross-sectional area.

[0008] In the above technical scheme, after the upper injection mold and the lower injection molding mold are separated, the electric cylinder drives the linkage support block to move upward, and the linkage support block drives the cross linkage plate to make the linkage support rod move upward along the inside of the lower injection molding mold. At the same time, the linkage support rod drives the middle cross top pressure plate to move upward, and the middle cross top pressure plate can eject the cross surface at the bottom of the injection molded part. The four linkage pillars move upward at the same time, and the linkage pillar drives the linkage support ring to move upward. The multiple V-shaped demolding strips drive the edge of the injection molded part to move upward synchronously.

[0009] Preferably, a guide assembly is installed on the outer wall of the linkage pillar; the guide assembly includes a linkage block installed on the outer wall of the linkage pillar, the top and bottom ends of the linkage block are fixedly connected with support rings, a guide support rod penetrating the linkage block is installed inside the support ring, a connecting support block is welded to the top end of the guide support rod, and a supporting bottom block is welded to the bottom end of the guide support rod, the support ring and the linkage block are vertically slidably connected to the guide support rod, and the outer wall of the guide support rod is polished and ground.

[0010] In the above technical solution, the upward movement of the linkage pillar will drive the linkage block to move upward, and the linkage block will drive the two support rings to move upward. The support rings and the linkage block can move upward along the outer wall of the guide support rod, and the connecting support block supports the guide support rod. Multiple V-shaped demoulding strips move upward stably for demoulding.

[0011] Technical effects and advantages of the utility model:

[0012] 1. By setting up a linkage anti-deformation mechanism, the electric cylinder drives the linkage support block to move upward, the linkage support block drives the cross linkage plate to make the linkage support rod move upward along the inside of the lower injection molding mold, the linkage support rod drives the middle cross top pressure plate to move upward, the cross linkage plate drives the four linkage pillars to move upward at the same time, and multiple V-shaped demoulding strips drive the edge of the injection molded part to move upward synchronously, and the middle and edge of the injection molded part are demoulded synchronously at multiple points, so as to avoid deformation damage when the injection molded part is demoulded, and the anti-deformation property is better;

[0013] 2. Using the guide assembly to move the linkage pillar upward will drive the linkage block to move upward, and the linkage block will drive the two support rings to move upward. At the same time, the support rings and the linkage block can move upward along the outer wall of the guide support rod to ensure that the linkage support ring drives multiple V-shaped demolding strips to move upward stably for demolding, and demolding is even to avoid deformation and damage of the injection molded parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of an injection molded part demoulding and anti-deformation structure provided by the utility model.

[0015] Figure 2 It is a schematic diagram of the local structure of the connection between the middle cross top pressure plate and the linkage support rod in an injection molded part demoulding and anti-deformation structure of the utility model.

[0016] Figure 3 The utility model is a schematic diagram of the bottom-up structure of an injection molded part demoulding assistance and anti-deformation structure.

[0017] Figure 4 It is a schematic diagram of the partial structure of the cross linkage plate and the linkage support connection in the injection molded part demoulding and anti-deformation structure of the utility model.

[0018] The accompanying drawings are marked as follows: 1. lower injection molding mold; 2. middle cross top pressure plate; 3. V-shaped demoulding strip; 4. linkage support ring; 5. linkage support rod; 6. cross linkage plate; 7. linkage support block; 8. electric cylinder; 9. support block; 10. guide pillar; 11. upper injection mold; 12. injection hole; 13. connecting pillar; 14. support base; 15. linkage pillar; 16. linkage sleeve block; 17. support ring; 18. guide support rod; 19. connecting support block; 20. support bottom block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] As attached Figure 1-4 The structure of the injection molded part is provided with a linkage anti-deformation mechanism. The linkage anti-deformation mechanism can make the edge of the injection molded part move upward synchronously with the multiple V-shaped demoulding strips 3, and the middle and edge of the injection molded part can be demoulded synchronously at multiple points. The injection molded part can avoid deformation damage when demoulding, and the anti-deformation property is better. The specific structure of the linkage anti-deformation mechanism is as follows:

[0021] In some embodiments, as shown in the attached Figure 1-2 As shown, the linkage anti-deformation mechanism includes a plurality of V-shaped demoulding strips 3 arranged on the outer wall of the lower injection molding mold 1, and a linkage support ring 4 is fixedly connected to one side of the V-shaped demoulding strip 3, and a linkage support rod 5 penetrating the lower injection molding mold 1 is fixedly connected to the bottom end of the linkage support ring 4, and a cross linkage plate 6 is fixedly connected to the bottom end of the linkage support rod 5, and a linkage support block 7 is welded to the bottom end of the cross linkage plate 6, and an electric cylinder 8 is installed at the bottom end of the linkage support block 7, and a plurality of linkage pillars 15 are evenly distributed and arranged in a circular ring at the bottom end of the linkage support ring 4;

[0022] When the molded part demoulding and anti-deformation structure of the present embodiment is used, the upper injection mold 11 is installed on the injection molding machine, and the injection molding machine drives the upper injection mold 11 to move downward along the outer wall guide of the two guide pillars 10, and the support base 14 supports the connecting pillars 13, and the connecting pillars 13 support the lower injection molding mold 1. After the upper injection mold 11 is closed with the lower injection molding mold 1, the molten injection liquid is injected into the injection hole 12, and is molded through the gap formed between the upper injection mold 11 and the lower injection molding mold 1. After it solidifies, an injection molded part is formed. After the upper injection mold 11 is separated from the lower injection molding mold 1, the support base 14 supports the connecting pillars 13, and the connecting pillars 13 support the lower injection molding mold 1. Block 9 supports the electric cylinder 8, and the electric cylinder 8 drives the linkage support block 7 to move upward, and the linkage support block 7 drives the cross linkage plate 6 to make the linkage support rod 5 move upward along the inside of the lower injection molding mold 1, and at the same time, the linkage support rod 5 drives the middle cross top pressure plate 2 to move upward, and the middle cross top pressure plate 2 can eject the cross surface at the bottom of the injection molded part. At the same time, the cross linkage plate 6 drives four linkage pillars 15 to move upward at the same time, and the linkage pillar 15 drives the linkage support ring 4 to move upward, and the linkage support ring 4 drives multiple V-shaped demolding strips 3 to move upward, and the multiple V-shaped demolding strips 3 drive the edge of the injection molded part to move upward synchronously, and the injection molded part is evenly separated from the lower injection molding mold 1.

[0023] In some embodiments, as shown in the attached Figure 1As shown, a support block 9 is fixedly connected to one side of the electric cylinder 8, an upper injection mold 11 is installed above the middle cross top pressure plate 2, two slidingly connected guide pillars 10 are penetrated at the top of the upper injection mold 11, and the guide pillars 10 are slidably connected to the upper injection mold 11, and an injection hole 12 is penetrated at the top of the upper injection mold 11 and located at its center point, so that the injection molding machine drives the upper injection mold 11 to move downward along the outer wall of the two guide pillars 10, and the molten injection liquid is injected into the injection hole 12 to complete the injection molding of the injection molded part, and a plurality of connecting pillars 13 are fixedly connected to the bottom end of the lower injection molding mold 1 and near its edge line position, and the plurality of connecting pillars 13 are arranged in a circular ring with equal spacing, and a supporting base 14 is welded to the bottom end of the connecting pillar 13, and the top cross-sectional area of ​​the supporting base 14 is smaller than the bottom cross-sectional area, so that the supporting base 14 supports the connecting pillar 13, and the connecting pillar 13 supports the lower injection molding mold 1, thereby increasing the vertical stability of the lower injection molding mold 1.

[0024] In some embodiments, as shown in the attached Figure 4 As shown, the outer wall of the linkage support 15 is installed with a guide assembly;

[0025] The guide assembly includes a linkage block 16 installed on the outer wall of the linkage support 15, the top and bottom ends of the linkage block 16 are fixedly connected with a support ring 17, a guide support rod 18 penetrating the linkage block 16 is installed inside the support ring 17, a connecting support block 19 is welded to the top of the guide support rod 18, and a supporting bottom block 20 is welded to the bottom end of the guide support rod 18, the support ring 17 and the linkage block 16 are vertically slidably connected to the guide support rod 18, and the outer wall of the guide support rod 18 is polished and ground;

[0026] When the linkage pillar 15 is guided according to the upper structure, the upward movement of the linkage pillar 15 will drive the linkage block 16 to move upward, and the linkage block 16 will drive the two support rings 17 to move upward. At the same time, the support ring 17 and the linkage block 16 can move upward along the outer wall of the guide support rod 18. At the same time, the supporting bottom block 20 supports the guide support rod 18, and the connecting support block 19 supports the guide support rod 18. In this way, when the linkage pillar 15 moves upward, it can ensure that the linkage pillar 15 moves upward stably, and ensure that the linkage support ring 4 drives the multiple V-shaped demolding strips 3 to move upward stably for demolding.

[0027] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited and can be determined using conventional equipment. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An injection molded part demoulding and deformation prevention structure, comprising a lower injection molding mold (1), wherein a middle cross top pressure plate (2) is embedded at the top of the lower injection molding mold (1), characterized in that: The outer wall of the lower injection molding mold (1) is provided with a linkage anti-deformation mechanism; The linkage anti-deformation mechanism comprises a plurality of V-shaped demoulding strips (3) arranged on the outer wall of the lower injection molding mold (1), and a linkage support ring (4) is fixedly connected to one side of the V-shaped demoulding strip (3), a linkage support rod (5) penetrating the lower injection molding mold (1) is fixedly connected to the bottom end of the linkage support ring (4), a cross linkage plate (6) is fixedly connected to the bottom end of the linkage support rod (5), a linkage support block (7) is welded to the bottom end of the cross linkage plate (6), an electric cylinder (8) is installed at the bottom end of the linkage support block (7), and a plurality of linkage pillars (15) are arranged in a circular ring at equal intervals at the bottom end of the linkage support ring (4).

2. The anti-deformation structure for assisting demoulding of injection molded parts according to claim 1, characterized in that: The linkage support rod (5) and the middle cross top pressure plate (2) are both slidably connected to the lower injection molding mold (1), and the outer wall of the linkage support rod (5) is polished and ground.

3. The anti-deformation structure for assisting demoulding of injection molded parts according to claim 1, characterized in that: The linkage support ring (4) and the cross linkage plate (6) are both fixedly connected to the linkage support pillar (15), and the center point of the linkage support block (7) and the center point of the linkage support rod (5) are located on the same vertical line.

4. The anti-deformation structure for assisting demoulding of injection molded parts according to claim 1, characterized in that: A support block (9) is fixedly connected to one side of the electric cylinder (8); an upper injection mold (11) is installed above the middle cross top pressure plate (2); two slidingly connected guide pillars (10) are penetrated at the top of the upper injection mold (11); and the guide pillars (10) are slidably connected to the upper injection mold (11); an injection hole (12) is penetrated at the top of the upper injection mold (11) and at the center point thereof.

5. The anti-deformation structure for assisting demoulding of injection molded parts according to claim 1, characterized in that: A plurality of connection pillars (13) are fixedly connected to the bottom end of the lower injection molding mold (1) and close to its edge line, and the plurality of connection pillars (13) are arranged and distributed equidistantly in a circular ring.

6. The anti-deformation structure for assisting demoulding of injection molded parts according to claim 5, characterized in that: A support base (14) is welded to the bottom end of the connecting support pillar (13), and the top cross-sectional area of ​​the support base (14) is smaller than the bottom cross-sectional area thereof.

7. The anti-deformation structure for assisting demoulding of injection molded parts according to claim 1, characterized in that: The outer wall of the linkage support (15) is provided with a guide assembly; The guide assembly comprises a linkage sleeve (16) mounted on the outer wall of the linkage pillar (15); the top and bottom ends of the linkage sleeve (16) are fixedly connected to a support ring (17); a guide support rod (18) penetrating the linkage sleeve (16) is mounted inside the support ring (17); a connecting support block (19) is welded to the top end of the guide support rod (18); and a supporting bottom block (20) is welded to the bottom end of the guide support rod (18).

8. The anti-deformation structure for assisting demoulding of injection molded parts according to claim 7, characterized in that: The support ring (17) and the linkage sleeve block (16) are both vertically slidably connected to the guide support rod (18), and the outer wall of the guide support rod (18) is polished and ground.

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