Demolding Device for Porous Structures in Different Directions and Its Usage Method

Abstract

The present invention discloses an injection molding demolding device and method with porous structures in different directions, including a first module and a second module arranged oppositely. The first module includes two symmetrically arranged first sliders, and a first guide rail block is slidably arranged between the two first sliders. A first mold core is arranged at the front end of the first guide rail block. The second module includes two symmetrically arranged second sliders, and a second guide rail block is slidably arranged between the two second sliders. A second mold core is arranged at the front end of the second guide rail block. A slider insert is slidably arranged in the first mold core and the second mold core. The first slider and the second slider are inserted with inclined guide posts that move vertically upward from their tops to drive the relative movement of the first slider and the second slider. The present invention arranges for the slider to first drive the slider insert to move backward, and then drives the guide rail block to move backward through the slider to complete the separation between the mold cores and complete demolding, greatly improving the demolding efficiency and saving the demolding space.

Description

Technical Field

[0001] The present invention relates to the technical field of mold demolding equipment, and particularly relates to an injection molding demolding device with a porous structure in different directions and a using method thereof. Background Art

[0002] After an injection mold injects and forms a plastic product, demolding is required. When injecting many products, especially products with complex structures, multiple inserts are often needed to form the cavity of the product. However, for a complex module composition structure to achieve non-destructive demolding, a relatively large demolding space is often required. Especially for an injection mold with a porous structure on the circumferential surface, the core-pulling method cannot be directly used for demolding, which is likely to wear the mold and cause errors in the shape of the product during the next injection.

[0003] In existing processing molds, to save costs, the injection mold generally strives to minimize its volume. And for the efficiency of the injection process, the mode of disassembling all modules for demolding and then reassembling for injection can no longer meet the daily production requirements.

[0004] Therefore, how to quickly and non-destructively perform core-pulling demolding on an injection product with a porous structure is an urgent problem to be solved at present. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an injection molding demolding device with a porous structure in different directions and a using method thereof.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] An injection molding demolding device with a porous structure in different directions includes a first module and a second module arranged oppositely. The first module includes two symmetrically arranged first sliders, and a first guide rail block is slidably arranged between the two first sliders. A first mold core is arranged at the front end of the first guide rail block; the second module includes two symmetrically arranged second sliders, and a second guide rail block is slidably arranged between the two second sliders. A second mold core is arranged at the front end of the second guide rail block; a cavity is formed at the centers of the first mold core and the second mold core, and a group of slider inserts slidably arranged inside the first mold core and the second mold core are evenly distributed along the outer peripheral wall of the cavity. The front end of the slider insert is inserted into the cavity to form an injection cavity, and the tail end is slidably arranged inside the first slider and the second slider; the first slider and the second slider are inserted with inclined guide columns that move vertically upward from their tops to drive the first slider and the second slider to move relatively. The contact ends of the first module and the second module match. In the first state, the first module and the second module are engaged; in the second state, the first module and the second module are separated.

[0008] Preferably, positioning pins are respectively arranged inside the first guide rail block and the second guide rail block. Waist-shaped grooves are arranged on the side surfaces of the first slider in contact with the first guide rail block and the second slider in contact with the second guide rail block. Both ends of the positioning pin protrude outside the first guide rail block and the second guide rail block, and the protruding ends thereof are slidably clamped in the waist-shaped grooves. When the end of the positioning pin abuts against the end of the waist-shaped groove, the first guide rail block slides following the first slider, and the second guide rail block slides following the second slider.

[0009] Preferably, there is a strip-shaped chute between the side surfaces of the first slider in contact with the first guide rail block and between the side surfaces of the second slider in contact with the second guide rail block. A guide strip matching the strip-shaped chute is inserted in the strip-shaped chute.

[0010] Preferably, the first slider and the second slider are arranged opposite to each other, and their fronts can be engaged. The first inner side surface of the first slider and the second inner side surface of the second slider are symmetric inclined surfaces. When the first slider and the second slider are engaged, the two first inner side surfaces and the two second inner side surfaces respectively abut against the outer side walls of the first mold core and the second mold core to define the positions of the first mold core and the second mold core.

[0011] Preferably, the cross-section of the cavity is circular, and six slider inserts are evenly distributed on its outer peripheral wall. Each slider insert consists of a group of pins and a pin base. The tail end of each pin is horizontally fixed to the front end of the pin base from top to bottom, and the front end of the pin is inserted into the cavity to form an injection mold cavity.

[0012] Preferably, the six slider inserts are divided into four first slider inserts and two second slider inserts. One first slider insert is slidably connected to each of the first inner side surface and the second inner side surface, and the first slider insert is obliquely inserted into the first mold core and the second mold core; the two second slider inserts are respectively slidably arranged on the second inner side surface and inserted into the interior of the junction of the first mold core and the second mold core.

[0013] Preferably, guide grooves are arranged on both the first inner side surface and the second inner side surface. The tail ends of the pin bases of each first slider insert and the second slider insert have blocks matching the guide grooves, and the blocks are slidably arranged in the guide grooves and slide along the guide grooves.

[0014] Preferably, one side of the second slider insert has a guide block, and there is a groove matching the guide block in the second mold core, and the guide block is slidably arranged in the groove.

[0015] Preferably, the outer surface of the pin is coated with a wear-resistant layer.

[0016] The present invention also discloses a method for using an injection molding demolding device with a porous structure in different directions, comprising the following steps:

[0017] S1. In the injection molding state, the first module and the second module are engaged, that is, the first slider, the first guide rail block, and the first mold core are respectively engaged with the second slider, the second guide rail block, and the second mold core; at this time, the inclined guide post is moved upward. As the inclined guide post moves upward, the first slider and the second slider move away from each other respectively;

[0018] S2. Driven by the first slider and the second slider, the first slider insert and the second slider insert both radially move outward simultaneously, and the pins thereon are respectively withdrawn from the cavity simultaneously. The end of the positioning pin moves from the tail end of the kidney-shaped groove to its front end. At this time, the first guide rail block and the second guide rail block remain stationary, and the first mold core and the second mold core remain in an engaged state;

[0019] S3. When the end of the positioning pin moves to the front end of the kidney-shaped groove, the inclined guide post continues to move upward, and the first slider and the second slider continue to move away from each other, so that the first guide rail block and the second guide rail block move outward synchronously with the first slider and the second slider. At the same time, the first mold core and the second mold core are separated, and all demolding is completed;

[0020] S4. Reverse operation can be performed to close the mold for the next injection molding.

[0021] The beneficial effects of the present invention are mainly reflected in:

[0022] 1. The slider is set to drive the slider insert to move backward to complete the core pulling of the pin, and then the slider drives the guide rail block to move backward to complete the separation between the mold cores to complete demolding. The structure is stable, greatly improving the demolding efficiency and saving the demolding space;

[0023] 2. The inclined guide post is set to drive the first slider and the second slider to move relative to each other, saving the equipment cost and streamlining the equipment structure;

[0024] 3. The kidney-shaped groove is set, and the positioning pin is used to make the slider and the guide block slide step by step, leaving time for the core pulling of the pin to ensure that the core pulling of the slider insert will not affect the injection molded product;

[0025] 4. The outer surface of the pin is coated with a wear-resistant layer to improve its strength and wear resistance in actual use, making it not easily damaged and more practical;

[0026] 5. The present invention can realize the engagement and / or separation between the first module and the second module through the relative movement of the first slider and the second slider, quickly switching between the injection molding mode and the demolding mode, which is beneficial to improving the injection molding efficiency. Brief Description of the Drawings

[0027] The technical solution of the present invention will be further described below in conjunction with the drawings:

[0028] Figure 1 : Schematic structural diagram of an embodiment of the present invention;

[0029] Figure 2 : Partial schematic structural diagram of an embodiment of the present invention;

[0030] Figure 3 : Partial schematic structural diagram of an embodiment of the present invention. Detailed Embodiments

[0031] The present invention will be described in detail below in conjunction with the specific embodiments shown in the drawings. However, these embodiments are not limited to the present invention, and any structural, method, or functional transformation made by those of ordinary skill in the art based on these embodiments is included in the protection scope of the present invention.

[0032] In the description of the solution, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description and simplification of the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. And, in the description of the solution, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0033] Such as Figures 1 to 2As shown in the figure, the present invention discloses an injection molding demolding device with a porous structure in different directions, which includes a first module and a second module arranged oppositely. The first module includes two symmetrically arranged first sliders 1, and a first guide rail block 2 is slidably arranged between the two first sliders 1. A first mold core 3 is arranged at the front end of the first guide rail block 2. The second module includes two symmetrically arranged second sliders 4, and a second guide rail block 5 is slidably arranged between the two second sliders 4. A second mold core 6 is arranged at the front end of the second guide rail block 5. A cavity 7 is formed at the centers of the first mold core 3 and the second mold core 6, and a set of slider inserts 8 slidably arranged inside the first mold core 3 and the second mold core 6 are evenly distributed along the outer peripheral wall of the cavity 7. The front end of the slider insert 8 is inserted into the cavity 7 to form an injection molding cavity, and its tail end is slidably arranged inside the first slider 1 and the second slider 4. The first slider 1 and the second slider 4 are inserted with inclined guide posts 9 that move vertically upward from their tops to drive the first slider 1 and the second slider 4 to move relatively. The contact ends of the first module and the second module are matched. In the first state, the first module and the second module are engaged. In the second state, the first module and the second module are separated.

[0034] In this preferred embodiment, the inclined guide post 9 is obliquely arranged so that when it moves vertically upward, it will drive the first slider 1 and the second slider 4 to slide outward. The arrangement of the inclined guide post 9 saves the equipment cost and simplifies the equipment structure.

[0035] Such as Figure 2 and Figure 3As shown, positioning pins 10 are respectively arranged inside the first guide rail block 2 and the second guide rail block 5. Waist-shaped grooves 11 are arranged on the side surfaces of the first slider 1 in contact with the first guide rail block 2 and the second slider 4 in contact with the second guide rail block 5. Both ends of the positioning pin 10 protrude outside the first guide rail block 2 and the second guide rail block 5, and the protruding ends thereof are slidably clamped in the waist-shaped grooves 11. When the end of the positioning pin 10 abuts against the end of the waist-shaped groove 11, the first guide rail block 2 slides following the first slider 1, and the second guide rail block 5 slides following the second slider 4. Specifically, in the first state, when the first module and the second module are engaged, the end of the positioning pin 10 abuts against the tail end of the waist-shaped groove 11. At this time, the positioning pin 10 has a limiting effect on the first slider 1 and the second slider 4 to prevent excessive engagement between the two and cause wear. In the second state, when the first module and the second module are separated, the end of the positioning pin 10 abuts against the front end of the waist-shaped groove 11, so that the first guide rail block 2 slides following the first slider 1, and the second guide rail block 5 slides following the second slider 4. The arrangement of the waist-shaped groove 11 enables the first guide rail block 2 and the second guide rail block 5 not to immediately slide synchronously following the first slider 1 and the second slider 4, which reserves a sliding time for the core pulling of the slider insert 8 and ensures that the core pulling of the slider insert 8 does not affect the appearance of the injection molded product.

[0036] To improve the smoothness of the sliding between the first slider 1 and the first guide rail block 2, and the smoothness of the sliding between the second slider 4 and the second guide rail block 5, there is a strip-shaped chute 15 between the side surfaces of the first slider 1 in contact with the first guide rail block 2 and between the side surfaces of the second slider 4 in contact with the second guide rail block 5. A guide bar 16 matching the strip-shaped chute 15 is inserted into the strip-shaped chute 15. Specifically, the strip-shaped chute 15 is formed by concave portions on the side surfaces of the first slider 1 in contact with the first guide rail block 2 and the side surfaces of the second slider 4 in contact with the second guide rail block 5. Inserting the guide bar 16 can play a role in limiting and guiding, making the sliding between the first slider 1 and the first guide rail block 2, and between the second slider 4 and the second guide rail block 5 more stable. And inserting the guide bar 16 does not require other fixing structures, which can streamline the equipment mechanism and save equipment space. In other feasible embodiments, the guide bar 16 can also be integrally formed with the first slider 1, the second slider 4 and / or the first guide rail block 2, the second guide rail block 5.

[0037] As Figure 3As shown, the first slider 1 and the second slider 4 are arranged oppositely, and their front ends can be engaged with each other. The first inner side surface 101 of the first slider 1 and the second inner side surface 401 of the second slider 4 are symmetric inclined surfaces. When the first slider 1 and the second slider 4 are engaged, the two first inner side surfaces 101 and the two second inner side surfaces 401 are respectively in contact with the outer side walls of the first mold core 3 and the second mold core 6 to define the positions of the first mold core 3 and the second mold core 6. Specifically, the outer side walls of the first mold core 3 and the second mold core 6 are inclined surfaces matching the first inner side surface 101 and the second inner side surface 401. The first inner side surface 101, the second inner side surface 401, the first guide rail block 2, and the second guide rail block 5 enclose a closed space close to a regular hexagon to limit the first mold core 3 and the second mold core 6 and ensure a tight connection between them. At the same time, the inclined surfaces of the first inner side surface 101 and the second inner side surface 401 are also beneficial for driving the slider insert 8 to be pulled outwards when moving outwards.

[0038] Specifically, as Figure 2 , 3 shown, in this preferred embodiment, the cross-section of the cavity 7 is circular, and six slider inserts 8 are evenly distributed on its outer peripheral wall. Each slider insert 8 is composed of a set of pins 801 and a pin base 802. The tail end of each pin 801 is horizontally fixed to the front end of the pin base 802 from top to bottom, and the front end of the pin 801 is inserted into the cavity 7 to form an injection mold cavity. The arrangement of the pins 801 is preferably coaxially fixed in the pin base 802 from bottom to top, and the spacing between each pin 801 is equal. When the pins 801 extend into the cavity 7, corresponding through holes can be formed on the injection molded product. In other feasible embodiments, the number of the slider inserts 8 can be two, four, or other appropriate numbers. In addition, in other feasible embodiments, the spacing between the pins 801 can be unequal; the diameters of the pins 801 can be unequal, the pins 801 can also be arranged in a staggered manner from top to bottom; the front ends of the pins 801 can also have other shapes so that other patterns can be formed on the outer wall of the injection mold cavity.

[0039] Furthermore, the six slider inserts 8 are divided into four first slider inserts 81 and two second slider inserts 82. One first slider insert 81 is slidably connected to each of the first inner side surface 101 and the second inner side surface 401, and the first slider insert 81 is obliquely inserted into the first mold core 3 and the second mold core 6; the two second slider inserts 82 are respectively slidably arranged on the second inner side surface 401 and inserted into the interior of the junction of the first mold core 3 and the second mold core 6.

[0040] To facilitate the synchronous sliding of the first slider insert 81 and the second slider insert 82 along with the first slider 1 and the second slider 4, guide grooves 12 are provided on both the first inner side 101 and the second inner side 401. The tail ends of the pin sockets 802 of each of the first slider inserts 81 and the second slider inserts 82 have locking blocks 13 that match the guide grooves 12. The locking blocks 13 are slidably disposed within the guide grooves 12 and slide along the guide grooves 12. When the first slider 1 and the second slider 4 move outward, the first slider inserts 81 and the second slider inserts 82 will slide outward, causing the pins 801 at their front ends to be withdrawn from the cavity 7.

[0041] In addition, to ensure the smooth sliding of the second slider insert 82, one side of the second slider insert 82 has a guide locking block 14, and the second mold core 6 has a groove (not shown in the figure) that matches the guide locking block 14. The guide locking block 14 is slidably disposed within the groove. The provision of the groove and the guide locking block 14 can ensure the stability of the second slider insert 82 when sliding within the second mold core 6, prevent it from shifting, and facilitate its resetting.

[0042] The working principle of the present invention is as follows:

[0043] S1. In the injection molding state, the first module and the second module are engaged, and the first slider 1, the first guide rail block 2, the first mold core 3 are engaged with the second slider 4, the second guide rail block 5, and the second mold core 6;

[0044] After the injection molding is completed and the mold is opened, the angled guide post 9 moves upward. As the angled guide post 9 moves upward, the first slider 1 and the second slider 4 move away from each other respectively;

[0045] S2. Driven by the first slider 1 and the second slider 4, the first slider insert 81 and the second slider insert 82 both move radially outward simultaneously, and the pins 801 thereon are respectively withdrawn from the cavity 7 simultaneously. The end of the positioning pin 10 moves from the tail end to the front end of the kidney-shaped groove 11. At this time, the first guide rail block 2 and the second guide rail block 5 remain stationary, and the first mold core 3 and the second mold core 6 remain engaged;

[0046] S3. When the end of the positioning pin 10 moves to the front end of the kidney-shaped groove 11, the angled guide post 9 continues to move upward, and the first slider 1 and the second slider 4 continue to move away from each other, causing the first guide rail block 2 and the second guide rail block 5 to move outward synchronously with the first slider 1 and the second slider 4. At the same time, the first mold core 3 and the second mold core 6 are separated, completing the entire demolding process.

[0047] Reverse operation can be performed to close the mold for the next injection molding.

[0048] The present invention utilizes an inclined guide column 9 to drive the first slider 1 and the second slider 4 to move relative to each other, and through the movement of the first slider 1 and the second slider 4, the engagement / separation between the slider insert 8 and the first mold core 3 and the second mold core 6 is achieved, and the first module and the second module are quickly switched between the first state and the second state, thereby improving the injection molding efficiency of the product and ensuring the lossless demolding of the injection molded product; in particular, core pulling and demolding in multiple directions are achieved through movement in two directions, which saves injection molding costs and demolding space, and has great practicality.

[0049] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0050] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. Injection mold release device for porous structures in different directions, Characterized in that: It includes a first module and a second module which are arranged oppositely. The first module includes two symmetrically arranged first sliders (1), and a first guide rail block (2) is slidably arranged between the two first sliders (1). A first mold core (3) is arranged at the front end of the first guide rail block (2); the second module includes two symmetrically arranged second sliders (4), and a second guide rail block (5) is slidably arranged between the two second sliders (4). A second mold core (6) is arranged at the front end of the second guide rail block (5); the first slider (1) and the second slider (4) are arranged oppositely, and their front ends can be engaged with each other. The first inner side surface (101) of the first slider (1) and the second inner side surface (401) of the second slider (4) are symmetrically arranged inclined surfaces. When the first slider (1) and the second slider (4) are engaged, the two first inner side surfaces (101) and the two second inner side surfaces (401) are respectively abutted against the outer side walls of the first mold core (3) and the second mold core (6) to define the positions of the first mold core (3) and the second mold core (6); there is a cavity (7) at the center of the first mold core (3) and the second mold core (6), and a group of slider inserts (8) which are slidably arranged inside the first mold core (3) and the second mold core (6) are evenly distributed along the outer peripheral wall of the cavity (7). The front end of the slider insert (8) is inserted into the cavity (7) to form an injection mold cavity, and its tail end is slidably arranged inside the first slider (1) and the second slider (4); the cross section of the cavity (7) is circular, and six slider inserts (8) are evenly distributed along its outer peripheral wall. Each slider insert (8) is composed of a group of pins (801) and a pin base (802). The tail end of each pin (801) is horizontally fixed to the front end of the pin base (802) from top to bottom. The front end of the pin (801) is inserted into the cavity (7) to form an injection mold cavity; the six slider inserts (8) are divided into four first slider inserts (81) and two second slider inserts (82). One first slider insert (81) is slidably connected to each first inner side surface (101) and the second inner side surface (401), and the first slider insert (81) is obliquely inserted into the first mold core (3) and the second mold core (6); the two second slider inserts (82) are respectively slidably arranged on the second inner side surface (401) and inserted into the inside where the first mold core (3) and the second mold core (6) meet; guide grooves (12) are arranged on both the first inner side surface (101) and the second inner side surface (401). The tail end of the pin base (802) of each first slider insert (81) and the second slider insert (82) has a block (13) which is matched with the guide groove (12), and the block (13) is slidably arranged in the guide groove (12) and slides along the guide groove (12).The first slider (1) and the second slider (4) are internally provided with inclined guide posts (9) that move vertically upward from their tops to drive the first slider (1) and the second slider (4) to move relatively. The contact ends of the first module and the second module are matched. In the first state, the first module and the second module are engaged with each other; In the second state, the first module and the second module are separated; positioning pins (10) are respectively arranged inside the first guide rail block (2) and the second guide rail block (5). Waist-shaped grooves (11) are arranged on the side surfaces of the first slider (1) in contact with the first guide rail block (2) and the second slider (4) in contact with the second guide rail block (5). Both ends of the positioning pin (10) protrude outside the first guide rail block (2) and the second guide rail block (5), and the protruding ends thereof are slidably clamped in the waist-shaped grooves (11). When the end of the positioning pin (10) abuts against the end of the waist-shaped groove (11), the first guide rail block (2) slides following the first slider (1), and the second guide rail block (5) slides following the second slider (4).

2. The injection mold release device for porous structures in different directions according to claim 1, Characterized in that: There is a strip-shaped chute (15) between the side surfaces of the first slider (1) in contact with the first guide rail block (2) and between the side surfaces of the second slider (4) in contact with the second guide rail block (5). A guide bar (16) matching the strip-shaped chute (15) is inserted in the strip-shaped chute (15).

3. The injection mold release device for porous structures in different directions according to claim 1, Characterized in that: One side of the second slider insert (82) has a guiding block (14). The second mold core (6) has a groove matching the guiding block (14), and the guiding block (14) is slidably arranged in the groove.

4. The injection mold release device for porous structures in different directions according to claim 1, Characterized in that: The outer surface of the insertion pin (801) is coated with a wear-resistant layer.

5. The using method of the injection mold release device for porous structures in different directions according to claim 1, Characterized in that: Comprises the following steps: S1. In the injection state, the first module and the second module are engaged, and the first slider (1), the first guide rail block (2), and the first mold core (3) are respectively engaged with the second slider (4), the second guide rail block (5), and the second mold core (6); at this time, the upper inclined guide post (9) is lifted. As the inclined guide post (9) is lifted, the first slider (1) and the second slider (4) move away from each other respectively. S2. Driven by the first slider (1) and the second slider (4), the first slider insert (81) and the second slider insert (82) both move radially outwards at the same time, and the insertion pins (801) thereon are respectively withdrawn from the cavity (7) at the same time. The end of the positioning pin (10) moves from the tail end of the waist-shaped groove (11) to its front end. At this time, the first guide rail block (2) and the second guide rail block (5) remain stationary, and the first mold core (3) and the second mold core (6) remain in an engaged state. S3. After the end of the positioning pin (10) moves to the front end of the kidney-shaped groove (11), the inclined guide pillar (9) continues to move upward, and the first slider (1) and the second slider (4) continue to move away from each other, so that the first guide rail block (2) and the second guide rail block (5) follow the first slider (1) and the second slider (4) to move outward synchronously. At the same time, the first mold core (3) and the second mold core (6) are separated to complete all demolding; S4. Reverse operation can be used to close the mold for the next injection molding.

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