Injection mold capable of preventing surface damage of product

Abstract

The utility model provides an injection mold capable of preventing the surface of a product from being damaged, the injection mold comprises a fixed mold, a movable mold, a core pulling assembly and a jacking assembly, the surface of the fixed mold is provided with a concave mold groove, and the concave mold groove is provided with a side inlet; the movable die and the fixed die can be closed to seal the concave die groove to form a cavity; the core pulling assembly is arranged on the fixed die and provided with a mold core structure, and the mold core structure can be arranged in the side inlet in a penetrating mode so as to be inserted into the female die groove. The jacking assembly is arranged below the core pulling assembly and can jack the core pulling assembly to drive the core pulling assembly to ascend and descend. According to the technical scheme, the damage risk of the appearance surface of the product during demolding can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold capable of preventing product surfaces from being damaged. Background Art

[0002] Plastic products are made of plastic as the main raw material through various injection molds. Different shapes of injection molded products are made through different injection molds, so they are widely used in various fields of daily life. In the related technology, ejector structures such as ejectors are often set in the injection mold to eject the molded product out of the mold cavity; however, the method of taking out the material through the ejector is likely to cause damage to the appearance of the product, affecting the appearance quality of the injection molded product. Utility Model Content

[0003] The main purpose of the utility model is to provide an injection mold which can prevent the surface of a product from being damaged, so as to reduce the risk of damage to the appearance of the product during demoulding.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an injection mold for preventing the surface of a product from being damaged. The injection mold comprises:

[0005] A fixed die, wherein a surface of the fixed die is provided with a die groove, and the die groove has a side inlet;

[0006] A movable mold, which can be molded together with the fixed mold to close the concave mold groove to form a cavity;

[0007] A core pulling assembly, which is disposed on the fixed mold and is provided with a core structure, and the core structure can be passed through the side inlet to be inserted into the die groove; and

[0008] A lifting component is arranged below the core pulling component and can support the core pulling component to drive the core pulling component to rise and fall.

[0009] In one embodiment of the present application, the core pulling assembly includes:

[0010] a movable block, the movable block being movably disposed on the fixed mold; and

[0011] A sliding core-pulling mechanism, which is slidably disposed on the movable block and is provided with the core structure, and can slide back and forth along the arrangement direction of the side inlet and the die groove;

[0012] The lifting assembly can support the movable block to drive the core pulling assembly to rise and fall.

[0013] In one embodiment of the present application, the movable block includes a bearing portion and two side portions that are arranged opposite to each other, and the sliding core-pulling mechanism is slidably disposed on the bearing portion and is located between the two side portions.

[0014] In one embodiment of the present application, the sliding core pulling mechanism comprises:

[0015] A first row seat, the first row seat is slidably disposed on the movable block to approach or move away from the die groove;

[0016] A second slider seat, the second slider seat is slidably disposed on the first slider seat to approach or move away from the die groove, and has a first position, a second position and a third position, at least a portion of the second slider seat is contracted toward the die groove to form two guide inclined surfaces disposed back to back; and

[0017] Two undercut inserts, both of which are arranged on the first row seat, and each of which is slidably connected to one of the guide slopes;

[0018] The core structure comprises a first core arranged at the end of the second row seat and two second cores respectively arranged at the ends of the two undercut inserts;

[0019] When the second row seat is located at the first position, the first core and the two second cores are located in the die groove; when the second row seat is from the second position to the third position, it is locked with the first row seat to drive the first row seat and the undercut insert to slide.

[0020] In one embodiment of the present application, the injection mold further includes an inclined guide member, the inclined guide member extends from the movable mold toward the fixed mold, and is inclined in a direction away from the die groove along the sliding direction of the second row seat;

[0021] An inclined hole is formed on the top surface of the second row seat, and the inclined hole extends in the depth direction away from the die groove, and the inclined guide piece can enter and exit the inclined hole to drive the second row seat to slide;

[0022] Wherein, when the second row seat is located at the third position, a part of the structure of the second core is located in the die groove.

[0023] In one embodiment of the present application, the injection mold further comprises a base, the base is arranged below the fixed mold, and a surface of the base facing the fixed mold is provided with two supporting parts arranged opposite to each other, and an activity space is formed between the two supporting parts;

[0024] The fixed mold is supported on the supporting part, and a avoidance hole is opened in the fixed mold which passes through the activity space. The core pulling assembly is carried by the fixed mold, and at least part of the lifting assembly can be passed through the avoidance hole to abut against the core pulling assembly.

[0025] In one embodiment of the present application, the lifting assembly includes:

[0026] A mounting seat, the mounting seat is movably disposed in the activity space and is arranged opposite to the fixed mold; and

[0027] A supporting member is protrudingly arranged on a surface of the mounting seat facing the fixed mold and can be penetrated through the avoidance hole.

[0028] In one embodiment of the present application, the injection mold further comprises a guide column, the guide column is arranged in the activity space, and the mounting seat is liftably sleeved on the guide column;

[0029] And / or, the side wall of the support portion facing the activity space is provided with one of a guide groove and a guide portion, the side wall of the mounting seat is provided with the other of a guide groove and a guide portion, and the guide portion is provided in the guide groove;

[0030] And / or, a limiter is provided on a surface of the mounting seat facing the fixed mold, and the limiter can be used to limit the rising height of the mounting seat;

[0031] And / or, a limiter is provided on the bottom surface of the fixed mold, and the limiter can be used to limit the rising height of the mounting seat;

[0032] And / or, a limiting column is convexly provided on the surface of the mounting seat facing the fixed mold, and the limiting column is inserted into the fixed mold in a liftable manner;

[0033] And / or, the injection mold further comprises an elastic buffer, wherein the elastic buffer is sandwiched between the mounting seat and the fixed mold;

[0034] And / or, the injection mold further comprises a position detector, and the position detector can be used to detect the lifting position of the lifting component or the core pulling component.

[0035] In one embodiment of the present application, the fixed mold includes a fixed seat and a rear mold core, the fixed seat is formed with a mounting groove, and the bottom wall of the mounting groove is provided with an avoidance hole;

[0036] The core pulling assembly and the rear mold core are both arranged in the installation groove, the rear mold core is provided with the die groove and the side inlet, and at least part of the lifting assembly is passed through the avoidance hole and arranged opposite to the core pulling assembly.

[0037] In one embodiment of the present application, the die groove includes a product trough and a sprue flow channel that are interconnected, the product trough is used to form the product, and the core structure is disposed in the product trough;

[0038] The bottom of the fixed die is provided with an ejector hole connected to the nozzle flow channel of the concave die groove, and the lifting assembly further includes an ejector pin, which extends in a vertical direction and is inserted into the ejector pin hole to support the nozzle material in the nozzle flow channel when the lifting assembly rises;

[0039] And / or, the die groove further includes a material taking channel, the material taking channel is connected to the sprue channel, the material taking channel is used to form a material taking part, and the material taking structure can remove the product from the core pulling assembly by picking up the material taking part.

[0040] The technical solution of the utility model is to provide a core pulling structure in the injection mold so that the injection mold can be used to mold products with structures such as side holes and side recesses; and a lifting assembly is provided to drive the core pulling assembly to rise and fall. If the injection mold is used to make a product, when the product needs to be taken out after the injection mold is opened, the core pulling assembly can be driven to rise by the lifting assembly before at least part of the core structure on the core pulling assembly is separated from the product, thereby driving the product to rise together to take the product out of the die groove, so there is no need to provide a ejection structure to directly push the product surface to eject the molded product out of the die groove, thereby avoiding leaving ejection marks on the product appearance surface, reducing the risk of damage to the product appearance surface, and meeting the requirements for product appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0042] Figure 1 This is a structural diagram of an embodiment of the injection mold of the present application;

[0043] Figure 2 for Figure 1 Exploded view of the injection mold;

[0044] Figure 3 This is a state diagram of the injection mold core pulling assembly and the product when they are not lifted up;

[0045] Figure 4 for Figure 3 The state diagram of the core pulling component and the product being lifted in the injection mold;

[0046] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0047] Figure 6 for Figure 3The matching structure diagram of the middle lifting assembly and the fixed mold;

[0048] Figure 7 for Figure 6 Structural diagram of the middle fixed mold;

[0049] Figure 8 for Figure 7 The enlarged view of point B in the middle;

[0050] Fig. 9 for Figure 6 Structural diagram of the middle lifting assembly;

[0051] Fig.10 This is a structural diagram of an embodiment of a core pulling component in an injection mold of the present application;

[0052] Fig.11 This is a structural diagram of components such as the fixed mold and the inclined guide piece in the injection mold of this application.

[0053] Description of Figure Numbers:

[0054]

[0055]

[0056] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0057] 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 of 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.

[0058] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0061] The utility model provides an injection mold 100 which prevents the surface of a product 200 from being damaged.

[0062] Please refer to Figures 1 to 5 In some embodiments of the present application, the injection mold 100 includes:

[0063] A fixed die 10, wherein a surface of the fixed die 10 is provided with a die groove 121, and the die groove 121 has a side inlet;

[0064] A movable mold 20, which can be molded together with the fixed mold 10 to close the die groove 121 to form a cavity;

[0065] A core pulling assembly 30, which is disposed on the fixed mold 10 and is provided with a core structure 33, and the core structure 33 can be passed through the side inlet to be inserted into the die groove 121; and

[0066] The lifting assembly 40 is disposed below the core pulling assembly 30 and can support the core pulling assembly 30 to drive the core pulling assembly 30 to rise and fall.

[0067] Specifically, the injection mold 100 can be used to inject a product 200 with structures such as holes and grooves. The injection mold 100 includes a fixed mold 10, a movable mold 20, and a core pulling assembly 30. The surface of the fixed mold 10 facing the movable mold 20 is provided with a die groove 121; the movable mold 20 is provided with a front mold core 21 on the side facing the fixed mold 10, and the surface of the front mold core 21 can be a plane, or it can be provided with a groove arranged opposite to the die groove 121; the movable mold 20 can be driven to approach and move away from the fixed mold 10, and when the movable mold 20 is molded with the fixed mold 10, the die groove 121 is closed to form a cavity. Among them, the gate connected to the cavity can be opened in the fixed mold 10 or in the movable mold 20. The core pull assembly 30 is arranged on the fixed mold 10 and is located on the side of the die groove 121. A side inlet is provided on the groove wall of the die groove 121 adjacent to the core pull assembly 30. The core structure 33 of the core pull assembly 30 can be inserted into the die groove 121 through the side inlet. With such arrangement, when the injection mold 100 is closed, the core structure 33 can be inserted into the cavity, and then structures such as grooves and holes can be formed at the position of the core structure 33 after the product 200 is solidified.

[0068] In the embodiment of the present application, at least part of the core pulling assembly 30 including the core structure 33 is also arranged to be movable relative to the fixed mold 10, and a jacking assembly 40 is arranged to be transmission-connected with the part of the core pulling assembly 30, so as to drive the core pulling assembly 30 to be lifted and lowered so that the core structure 33 enters the concave mold groove 121 of the fixed mold 10. Specifically, at least part of the jacking assembly 40 is arranged below the core pulling assembly 30, and a columnar structure, a plate-like structure or other structure can be arranged on the jacking assembly 40 to support the core pulling assembly 30; a driving member such as a cylinder, a hydraulic cylinder or a motor can be arranged to be transmission-connected with the core pulling assembly 30, and a transmission structure such as a screw transmission mechanism can also be used to be transmission-connected with the core pulling assembly 30, which is not limited here.

[0069] With such a configuration, when the injection mold 100 is used to mold the product 200, the injection mold 100 is closed and the injection material is injected. After the injection material is solidified to form the product 200, the mold is opened and the movable mold 20 is removed. The lifting assembly 40 drives the core pulling assembly 30 to rise, and since at least part of the core structure 33 is still inserted in the product 200, the core pulling assembly 30 can drive the product 200 to rise together, so that the product 200 is separated from the fixed mold 10. Then, the product 200 only needs to be removed from the core pulling structure, which can be done by using a robot to clamp or by using vacuum suction or suction cups to pick up the product 200, which is not limited here.

[0070] Among them, the core pulling assembly 30 can be set to be only liftable, or the core pulling assembly 30 can be set to be both liftable and retractable, and at the same time, the core structure 33 can be driven to slide in the direction of approaching and moving away from the die groove 121; with such a setting, when the grooves, holes and other structures provided on the product 200 are deeper and the core structure 33 is larger, before the product 200 is removed from the core pulling assembly 30, the core structure 33 can be forced to withdraw a certain distance, so as to avoid the core structure 33 causing greater interference with the product 200 when taking the material, thereby ensuring that the product 200 is smoothly detached from the core pulling assembly 30.

[0071] Therefore, it can be understood that the technical solution of the present application is provided with a core pulling structure in the injection mold 100, so that the injection mold 100 can be used to mold the product 200 with structures such as side holes and side recesses; and a lifting assembly 40 is provided to drive the core pulling assembly 30 to rise and fall. If the injection mold 100 is used to make the product 200, when the product 200 needs to be taken out after the injection mold 100 is opened, the core pulling assembly 30 can be driven to rise by the lifting assembly 40 before at least part of the core structure 33 on the core pulling assembly 30 is separated from the product 200, thereby driving the product 200 to rise together to take the product 200 out of the die groove 121, so that there is no need to set a ejection structure to directly push the surface of the product 200 to eject the molded product 200 out of the die groove 121, thereby avoiding leaving ejection marks on the appearance surface of the product 200, reducing the risk of damage to the appearance surface of the product 200, and meeting the requirements for the appearance of the product 200.

[0072] Please refer to Figure 2 In some embodiments of the present application, the core pulling assembly 30 includes:

[0073] A movable block 31, wherein the movable block 31 is movably disposed on the fixed mold 10; and

[0074] A sliding core-pulling mechanism 32, which is slidably disposed on the movable block 31 and is provided with the core structure 33, and the sliding core-pulling mechanism 32 can slide back and forth along the arrangement direction of the side inlet and the die groove 121;

[0075] The lifting assembly 40 can support the movable block 31 to drive the core pulling assembly 30 to move up and down.

[0076] Specifically, the core pulling assembly 30 is provided with a movable block 31 that can be raised and lowered relative to the fixed mold 10, and a sliding core pulling mechanism 32 arranged on the movable block 31, and the sliding core pulling mechanism 32 can be slidably arranged, and the movable block 31 can be arranged below the sliding core pulling mechanism 32, or it can be arranged on the side of the sliding core pulling mechanism 32, or in the following embodiment, the movable block 31 includes a bearing portion 311 arranged below the sliding core pulling mechanism 32 and a side portion 312 arranged on the side of the sliding core pulling mechanism 32. The sliding direction of the sliding core pulling mechanism 32 is the same as the arrangement direction of the upper entrance of the fixed mold 10 and the die groove 121; when the core structure 33 is located in the die groove 121, the sliding core pulling mechanism 32 can be driven to slide so that the sliding core pulling mechanism 32 is close to or away from the die groove 121, or the sliding core pulling mechanism 32 can be driven to slide after the core pulling assembly 30 is lifted, which is not limited here. The core-pulling mechanism 32 is set to be slidable, and the core structure 33 can be completely pulled out of the product 200 by the core-pulling mechanism 32, or only part of the core structure 33 can be pulled out of the product 200 to reduce the interference of the material-taking structure such as the manipulator when picking up the product 200. In addition, the lifting assembly 40 lifts and lowers the core-pulling assembly 30 by supporting the movable block 31, which can avoid the interference of the lifting assembly 40 with the sliding of the core-pulling mechanism 32, and improve the stability of the sliding core-pulling process of the core-pulling mechanism 32; and it can avoid the lifting assembly 40 directly supporting the core-pulling mechanism 32, which causes the lifting assembly 40 and the core-pulling mechanism 32 to wear each other when the core-pulling mechanism 32 slides.

[0077] In some embodiments, after the injection mold 100 is opened, the sliding core pulling mechanism 32 can be driven to slide so that part of the core structure 33 can be withdrawn from the product 200, and then the lifting assembly 40 supports the movable block 31 to drive the sliding core pulling mechanism 32 to rise. Since part of the core structure 33 is still inserted in the product 200, the product 200 will also rise with the core pulling assembly 30 and separate from the fixed mold 10, and then the material taking mechanism will remove the product 200 from the core pulling assembly 30.

[0078] Alternatively, after the injection mold 100 is opened, the lifting assembly 40 can first support the movable block 31 to raise the core pulling assembly 30. After the product 200 is separated from the fixed mold 10, the material picking mechanism picks up the product 200 and controls the sliding core pulling mechanism 32 to slide, so that the core structure 33 partially or completely withdraws from the product 200.

[0079] Please refer to Fig.10In some embodiments of the present application, the movable block 31 includes a bearing portion 311 and two side portions 312 arranged opposite to each other, and the slide core-pulling mechanism 32 is slidably arranged on the bearing portion 311 and between the two side portions 312. In this arrangement, the movable block 31 is formed into a slide groove by enclosing the bearing portion 311 and the two side portions 312, so that the slide core-pulling mechanism 32 can be limited and guided, thereby improving the stability of the slide core-pulling mechanism 32 during the sliding process.

[0080] Please refer to Fig.10 In some embodiments of the present application, the sliding core pulling mechanism 32 includes:

[0081] A first row seat 321, wherein the first row seat 321 is slidably disposed on the movable block 31 to approach or move away from the die groove 121;

[0082] A second row seat 322, which is slidably disposed on the first row seat 321 to approach or move away from the die groove 121, and has a first position, a second position, and a third position, wherein at least a portion of the second row seat 322 is contracted toward the direction of approaching the die groove 121 and forms two guide inclined surfaces disposed opposite to each other; and

[0083] Two undercut inserts 323, both of which are disposed on the first row seat 321, and each of which is slidably connected to one of the guide slopes;

[0084] The core structure 33 includes a first core 331 disposed at the end of the second row seat 322 and a second core 332 disposed at the ends of the two undercut inserts 323 .

[0085] When the second row seat 322 is located at the first position, the first core 331 and the two second cores 332 are both located at the die groove 121; when the second row seat 322 is from the second position to the third position, it is locked with the first row seat 321 to drive the first row seat 321 and the undercut insert 323 to slide.

[0086] Specifically, the slide core-pulling mechanism 32 includes a first slide seat 321 slidably connected to the movable block 31, a second slide seat 322 slidably connected to the first slide seat 321, and two undercut inserts 323 arranged on the first slide seat 321. The first slide seat 321 and the second slide seat 322 can both move closer to or farther away from the die groove 121 when sliding, so that at least a portion of the second slide seat 322 close to the die groove 121 is gradually contracted in a direction close to the die groove 121, thereby forming two guide inclined surfaces facing each other in the width direction on the second slide seat 322; the two undercut inserts 323 are arranged on the first slide seat 321, respectively located on both sides of the second slide seat 322 , and the undercut insert 323 can slide relative to the first row seat 321 in the width direction of the first row seat 321, and make the undercut insert 323 slidably connected with the guide inclined surface on the same side; and the core structure 33 includes a first core 331 arranged at the end of the second row seat 322 facing the die groove 121, and a second core 332 arranged at the ends of the two undercut inserts 323 facing the die groove 121, the first core 331 can be integrally formed with the second row seat 322, or the first core 331 can be connected to the second row seat 322; the second core 332 can be integrally formed with the undercut insert 323, or the second core 332 can be connected to the undercut insert 323. With such arrangement, when the second row seat 322 slides relative to the first row seat 321 and approaches or moves away from the die groove 121, the undercut insert 323 will slide relative to the guide slope and slide relative to the first row seat 321 in the width direction, so that the two second undercut inserts 323 approach or move away from each other in width. Among them, the sliding connection method between the second row seat 322 and the first row seat 321 can be to make the first row seat 321 and the second row seat 322 slidingly connected through a guide rail slider structure, or to adopt a screw rod structure for sliding connection, or to make the second row seat 322 be arranged in the first limit groove of the first row seat 321, or other feasible sliding connection methods; similarly, the sliding connection method in which the reverse lock insert 323 is slidingly arranged on the guide inclined surface can be a guide rail slider structure, a screw rod structure or a matching method of the sliding part and the sliding groove; and the matching method of the reverse lock insert 323 and the first row seat 321 can also adopt a guide rail slider structure, a screw rod structure and other structures, or the reverse lock insert 323 is set in the second limit groove, which is not limited here.

[0087] In addition, the second row seat 322 is defined to have a first position, a second position and a third position in its sliding direction; a driving member can be set to drive the second row seat 322 to slide, and when the second row seat 322 is in the first position, the first core 331 and the two second cores 332 are arranged side by side and inserted in the die groove 121 to form a core structure 33; in the process of the second row seat 322 moving from the first position to the second position, the second row seat 322 drives the first core 331 to withdraw from between the two second cores 332, and the two undercut inserts 323 slide relative to the guide inclined surface and slide relative to the first row seat 321 in the width direction, so that the two second cores 332 are close to each other, so as to reduce the distance and width between the two second cores 332. When the second row seat 322 moves to the second position, the second row seat 322 and the first row seat 321 are locked with each other, which can be a magnetic connection between the second row seat 322 and the first row seat 321, or a snap connection, or a matching method of a positioning pin and a bar hole is used in the following embodiment; when the second row seat 322 moves from the second position to the third position, the second row seat 322 drives the first row seat 321 to slide, so that the two undercut inserts 323 provided on the first row seat 321 slide together, thereby causing the first core 331 and the two second cores 332 to retreat in the direction away from the die groove 121 at the same time. When the second row seat 322 reaches the third position, the first core 331 and the two second cores 332 may be completely withdrawn from the concave mold groove 121 and separated from the product 200; or part of the structure of the two second cores 332 or even part of the structure of the first core 331 may remain in the product 200, and the product 200 may be separated from the core pulling assembly 30 by picking up the product 200. Since the width of the two second cores 332 has been reduced when the second cores 332 are pulled out of the product 200, they will not wear against the opening edge of the product 200. When the internal width of the injection groove or hole is greater than the opening width of the product 200, the core pulling operation can be completed without damaging the product 200.

[0088] Combined with reference Fig.10 and Fig.11 In some embodiments of the present application, the injection mold 100 further includes an inclined guide member 60, which extends from the movable mold 20 to the fixed mold 10 and is inclined along the sliding direction of the second row seat 322 in a direction away from the die groove 121; an inclined hole 3221 is provided on the top surface of the second row seat 322, and the inclined hole 3221 extends along the depth direction in a direction away from the die groove 121, and the inclined guide member 60 can enter and exit the inclined hole 3221 to drive the second row seat 322 to slide; wherein, when the second row seat 322 is located at the third position, a portion of the structure of the second core 332 is located in the die groove 121.

[0089] In this embodiment, the sliding of the second row seat 322 is driven by the guide 60 provided on the movable mold 20. The guide 60 can be a columnar, block-shaped or plate-shaped structure. One end of the guide 60 is connected to the movable mold 20, and the guide 60 is extended obliquely in the direction away from the rear mold core 12; an oblique hole 3221 is provided on the surface of the second row seat 322 facing the movable mold 20, and the oblique hole 3221 extends obliquely in the direction away from the rear mold core 12 along its depth direction, and is roughly adapted to the shape of the guide 60. When the movable mold 20 and the fixed mold 10 are closed, the diagonal guide piece 60 is inserted in the inclined hole 3221; when demolding is performed after the injection molding is completed and the material is solidified, the movable mold 20 moves away from the fixed mold 10, so that the diagonal guide piece 60 is gradually pulled out of the inclined hole 3221. At this time, the diagonal guide piece 60 will push the second row seat 322 to move from the first position to the second position and the third position in sequence, that is, the partial core pulling operation of the product 200 is realized simultaneously during the process of the movable mold 20 and the fixed mold 10 being separated, thereby improving the demolding efficiency of the product 200, and there is no need to set up additional driving components for controlling the movement of the second row seat 322, thereby reducing energy consumption.

[0090] Specifically, when the injection molding is completed and the material is solidified and demolding is performed, the inclined guide member 60 moves with the movable mold 20 in the direction away from the fixed mold 10, and at the same time, the inclined guide member 60 pushes the second row seat 322 to move from the first position to the second position and the third position in sequence. During this process, the second row seat 322 drives the first core 331 to withdraw from between the two second cores 332, and the two undercut inserts 323 slide relative to the inclined guide surface and slide relative to the first row seat 321 in the width direction, so that the two second cores 332 are close to each other; then the second row seat 32 2 drives the first row seat 321 and the two second undercut inserts 323 to slide to the third position. At this time, part of the second core 332 has not been pulled out of the product 200. Wherein, a proximity switch is used as the position detector 70. When the second row seat 322 moves to the third position, the first row seat 321 triggers the proximity switch, so that the proximity switch sends a sensing signal, and then controls the core pulling assembly 30 to lift up, so that the product 200 is pulled out of the die groove 121, and the robot picks up the product 200 so that the product 200 is separated from the core pulling assembly 30 to complete the material removal.

[0091] Please refer to Figure 3 In some embodiments of the present application, the injection mold 100 further includes a base 50, the base 50 is disposed below the fixed mold 10, and a surface of the base 50 facing the fixed mold 10 is provided with two supporting portions 52 disposed opposite to each other, and an activity space 53 is formed between the two supporting portions 52;

[0092] The fixed mold 10 is supported on the supporting portion 52 , and is provided with an avoidance hole 112 penetrating to the activity space 53 . The core pulling assembly 30 is carried on the fixed mold 10 , and at least part of the lifting assembly 40 can be passed through the avoidance hole 112 to abut against the core pulling assembly 30 .

[0093] In this embodiment, the injection mold 100 includes a base 50 for supporting structures such as a lifting component 40 and a fixed mold 10, and the base 50 includes a base 51 and at least two support parts 52 protruding from the base 51, wherein the two support parts 52 are arranged opposite to each other so that an activity space 53 is enclosed between the two support parts 52 and the base 51, and the fixed mold 10 is supported on the top surface of the support part 52 and fixedly connected to the support part 52; the lifting component 40 is arranged in the activity space 53 below the fixed mold 10, and the core pulling component 30 is arranged on the side of the fixed mold 10 away from the activity space 53, and an avoidance hole 112 is opened on the fixed mold 10, which passes through the fixed mold 10 and is arranged opposite to the core pulling component 30, so that at least part of the structure of the lifting component 40 can be passed through the avoidance hole 112 and abut against the core pulling component 30, thereby driving the core pulling component 30 to rise and fall. The base 50 integrates the jacking assembly 40, the fixed mold 10 and other structures into the same module, and can limit the height relationship and position relationship among the jacking assembly 40, the fixed mold 10 and the core pulling assembly 30, so that the jacking assembly 40 can accurately lift the core pulling assembly 30 to a preset height position higher than the fixed mold 10, thereby realizing the separation between the product 200 and the fixed mold 10, and enabling the subsequent material picking mechanism to accurately pick up the product 200.

[0094] Please refer to Figure 6 and Figure 7 In some embodiments of the present application, the fixed mold 10 includes a fixing seat 11 and a rear mold core 12, the fixing seat 11 is formed with a mounting groove 111, and the bottom wall of the mounting groove 111 is provided with an avoidance hole 112;

[0095] The core pulling assembly 30 and the rear mold core 12 are both arranged in the installation groove 111, the rear mold core 12 is provided with the die groove 121 and the side inlet, and at least part of the lifting assembly 40 is penetrated through the avoidance hole 112 and arranged opposite to the core pulling assembly 30.

[0096] In this embodiment, the fixed mold 10 includes a fixed seat 11 and a rear mold core 12 arranged in the fixed seat 11, so that the surface of the fixed seat 11 facing the movable mold 20 is recessed with a mounting groove 111, and the bottom wall of the mounting groove 111 is provided with an avoidance hole 112 that passes through the mounting space, and the core pulling assembly 30 and the rear mold core 12 provided with a die groove 121 are both arranged in the mounting groove 111 of the fixed seat 11; in this way, the mounting groove 111 can be used to limit the core pulling assembly 30, and the relative position between the core pulling assembly 30 and the die groove 121 can be stabilized to improve the molding accuracy of the product 200, and at least a part of the lifting assembly 40 can be passed through the avoidance hole 112 to support the core pulling assembly 30, and the lifting process of the lifting assembly 40 can also be limited and guided.

[0097] Please refer to Figure 6 and Fig. 9 In some embodiments of the present application, the lifting assembly 40 includes:

[0098] A mounting seat 41, the mounting seat 41 is movably disposed in the activity space 53 and is disposed opposite to the fixed mold 10; and

[0099] The supporting member 42 is protrudingly disposed on a surface of the mounting seat 41 facing the fixed mold 10 , and can be penetrated through the avoidance hole 112 .

[0100] Among them, the mounting seat 41 is roughly a plate-like structure, and the mounting seat 41 is arranged in the activity space 53, and the surface of the mounting seat 41 facing the fixed mold 10 is used as the mounting surface; at least one supporting member 42 can be arranged on the mounting surface, and the supporting member 42 is roughly a columnar structure. The cross-sectional profile of the supporting member 42 can be circular, rectangular, polygonal, and other regular or irregular structures, and can be arranged according to the bottom surface shape of the core pulling assembly 30. For example, only one supporting member 42 with a cross-sectional profile that imitates the bottom surface shape of the core pulling assembly 30 is arranged, or at least two supporting members 42 are arranged to support different positions of the bottom surface of the core pulling assembly 30, and each supporting member 42 is driven to rise and fall synchronously through the mounting seat 41, so that the lifting assembly 40 can stably support the core pulling assembly 30, so that the core pulling assembly 30 can be lifted and lowered smoothly.

[0101] In some embodiments, a pin 43 may be protruding from the mounting seat 41 , and the nozzle material 210 connected to the product 200 may be pushed by the pin 43 to assist in lifting the product 200 .

[0102] Please refer to Figure 2 In some embodiments of the present application, the injection mold 100 further includes a guide column 54, the guide column 54 is disposed in the activity space 53, and the mounting seat 41 is liftably mounted on the guide column 54;

[0103] And / or, the side wall of the support portion 52 facing the activity space 53 is provided with one of the guide groove 55 and the guide portion 411, and the side wall of the mounting seat 41 is provided with the other of the guide groove 55 and the guide portion 411, and the guide portion 411 is provided in the guide groove 55.

[0104] In this embodiment, a guide structure is provided in the injection mold 100. The guide structure can be provided by providing a guide column 54 in the movable space 53. The guide column 54 can be connected to the base 50 or to the bottom surface of the fixed mold 10. At the same time, a guide hole is provided on the mounting seat 41 of the core pulling assembly 30 so that the mounting seat 41 is sleeved on the guide column 54 through the guide hole. With such a configuration, the guide column 54 can be used to limit and guide the lifting and lowering process of the jacking assembly 40 to avoid displacement of the jacking assembly 40 and ensure that the jacking member 42 can be accurately passed through the avoidance hole 112 and abut against the core pulling assembly 30.

[0105] In addition, the guide structure can also be a guide groove 55 recessed on the side wall of the support portion 52, the guide groove 55 extends along the lifting direction of the jacking assembly 40, and a guide portion 411 is convexly provided on the side wall of the mounting seat 41; it can also be a guide portion 411 convexly provided on the side wall of the support portion 52, the guide portion 411 extends along the lifting direction of the jacking assembly 40, and a guide groove 55 is recessed on the side wall of the mounting seat 41, and the guide portion 411 is arranged in the guide groove 55. The lifting and lowering process of the jacking assembly 40 can be limited and guided by the cooperation of the guide portion 411 and the guide groove 55, so as to avoid the displacement of the jacking assembly 40 and ensure that the jacking member 42 can be accurately penetrated into the avoidance hole 112 and abut against the core pulling assembly 30.

[0106] Of course, the guide column 54, the guide portion 411, the guide groove 55 and other similar guide structures can also be provided at the same time to make the lifting process of the lifting assembly 40 smoother.

[0107] Please refer to Fig. 9 In some embodiments of the present application, the injection mold 100 further includes a limit member 44, wherein the limit member 44 is disposed on the surface of the mounting seat 41 facing the fixed mold 10, and / or the limit member 44 is disposed on the bottom surface of the fixed mold 10, and the limit member 44 can be used to limit the rising height of the mounting seat 41.

[0108] In this embodiment, the limiting member 44 may be convexly provided on the surface of the mounting seat 41 facing the fixed mold 10, or may be convexly provided on the bottom surface of the fixed mold 10 facing the mounting seat 41; in this way, the lifting height of the jacking assembly 40 can be limited. If the limiting member 44 is provided on the mounting seat 41, when the jacking assembly 40 rises to the preset limit height, the limiting member 44 will abut against the fixed mold 10 to limit the further rise of the jacking assembly 40; if the limiting member 44 is provided on the top surface, when the jacking assembly 40 rises to the preset limit height, the limiting member 44 will abut against the mounting seat 41, and also limit the further rise of the jacking assembly 40. In this way, the mounting seat 41 can be prevented from being lifted too high and rigidly colliding with the fixed mold 10, and the jacking assembly 40 can be prevented from lifting the core pulling assembly 30 too high, causing the core pulling assembly 30 and the product 200 to easily collide with the movable mold 20 or other components. The limiting member 44 may be made of rubber or other elastic materials to avoid a rigid collision between the limiting member 44 and the lifting assembly 40 or the fixed mold 10 .

[0109] Please refer to Fig. 9 In some embodiments of the present application, a limiting column 45 is convexly provided on the surface of the mounting seat 41 facing the fixed mold 10, and the limiting column 45 is inserted in the fixed mold 10 in a lifting manner. In this way, the cooperation between the limiting column 45 and the fixed mold 10 can be used to limit and guide the lifting assembly 40 during the lifting process of the lifting assembly 40, so as to avoid the displacement of the lifting assembly 40 and ensure that the lifting member 42 can be accurately inserted into the avoidance hole 112 and abut against the core pulling assembly 30.

[0110] Please refer to Figure 6 and Fig. 9 In some embodiments of the present application, the injection mold 100 further includes an elastic buffer 46, which is sandwiched between the mounting seat 41 and the fixed mold 10. The elastic buffer 46 can be a spring, a gas spring, an elastic airbag or other elastic structure. When the mounting seat 41 of the jacking assembly 40 rises and approaches the fixed mold 10, the elastic buffer 46 is squeezed and contracts, which can buffer and limit the rising process of the jacking assembly 40, and prevent the jacking assembly 40 from rising too fast and too high and colliding with the fixed mold 10. In addition, the elastic buffer 46 can be used to apply a downward force to the jacking assembly 40, so as to limit the jacking assembly 40 when the jacking assembly 40 does not need to be lifted, so as to prevent the jacking assembly 40 from jumping to the side of the fixed mold 10 due to vibration or other external forces, and improve the position stability of the jacking assembly 40.

[0111] In some embodiments, a limit column 45 and other structures are provided between the mounting seat 41 and the fixed mold 10, and the elastic buffer 46 can be sleeved on the limit column 45 to prevent the elastic buffer 46 from falling. For example, a spring can be sleeved on the limit column 45, or the elastic airbag can be set as an annular structure and sleeved on the limit column 45.

[0112] Please refer to Figure 1 In some embodiments of the present application, the injection mold 100 further includes a position detector 70 , and the position detector 70 can be used to detect the lifting position of the lifting assembly 40 or the core pulling assembly 30 .

[0113] The position detector 70 may be a proximity switch, a photoelectric sensor, or a Hall sensor, etc., and may be used to detect the position of the lifting assembly 40 or the core pulling assembly 30; for example, the position detector 70 may send out a sensing signal when the lifting assembly 40 is lowered and reset to a preset lowest position, thereby facilitating the control of the lifting assembly 40 to drive the lifting height of the core pulling assembly 30. Of course, the position detector 70 may also be used to send out a sensing signal when the lifting assembly 40 rises to a preset position, so as to improve the control accuracy of the height position of the lifting assembly 40 and the core pulling assembly 30.

[0114] like Figure 1 In the illustrated embodiment, the position detector 70 is a proximity switch, and a trigger structure is provided on the mounting base 41 of the lifting assembly 40. When the mounting base 41 descends to a preset position, the trigger structure abuts against the proximity switch to trigger the proximity switch. The height of the trigger structure can be made adjustable to adjust the preset lowest position of the ejector assembly 40.

[0115] Combined with reference Figure 5 and Figure 8 In some embodiments of the present application, the die groove 121 includes a product material groove 1211 and a sprue flow channel 1212 that are interconnected. The product material groove 1211 is used to mold the product 200, and the core structure 33 is arranged on the product material groove 1211. It can be understood that when the product 200 is injection molded, the injection material needs to be guided to the cavity of the molded product 200 through the sprue flow channel 1212 so that the injection material can smoothly fill the cavity. At this time, the die groove 121 of the fixed mold 10 includes a product material groove 1211 and a sprue flow channel 1212 for molding the product 200; after the material is solidified, the material in the sprue flow channel 1212 is solidified to form a sprue material 210 connected to the product 200. When the product 200 is clamped or adsorbed by a manipulator to remove the product 200 from the core pulling assembly 30, the sprue material 210 connected to the product 200 can be clamped or adsorbed to avoid damage to the surface of the product 200. The product 200 can be obtained by simply removing the nozzle material 210 after taking the material.

[0116] In addition, at least two cavities can be set in the injection mold 100. At this time, the setting of the sprue flow channel 1212 can guide the injection material to each cavity. Correspondingly, multiple core pulling assemblies 30 can be set in the injection mold 100. Each core pulling assembly 30 can be driven to rise and fall by the same lifting assembly 40, or multiple lifting assemblies 40 can be set to drive multiple core pulling assemblies 30 to rise and fall respectively.

[0117] Combined with reference Figure 5 and Figure 8 In some embodiments of the present application, the die groove 121 also includes a material collection channel 1213, which is connected to the sprue channel 1212. The material collection channel 1213 is used to form a material collection part 220. The material collection structure can remove the product 200 from the core pulling assembly 30 by picking up the material collection part 220.

[0118] In this embodiment, a material collection channel 1213 connected to the sprue flow channel 1212 can be set in the die groove 121. When the mold is closed and the molding material is injected, part of the molding material will flow into the material collection channel 1213 along the sprue flow channel 1212, and form a material collection portion 220 after the molding material is solidified. With this arrangement, when the injection mold 100 is opened and the core pulling assembly 30 is lifted to allow the product 200 to be ejected from the die groove 121, a material collection structure such as a manipulator can be used to clamp or suck the material collection portion 220 to remove the product 200 from the core pulling assembly 30, thereby avoiding direct clamping or adsorption of the product 200 to damage the surface of the product 200, reducing the risk of damage to the surface of the product 200, and meeting the appearance requirements of the product 200.

[0119] Combined with reference Figure 5 and Figure 8 In some embodiments of the present application, a pin hole 122 connected to the sprue channel 1212 of the die groove 121 is formed at the bottom of the fixed mold 10, and the lifting assembly 40 also includes an ejector pin 43, which extends in a vertical direction and is inserted into the ejector pin hole 122 to support the sprue material 210 in the sprue channel 1212 when the lifting assembly 40 rises.

[0120] In this embodiment, an ejector pin 43 can be provided on the lifting assembly 40. When the lifting assembly 40 drives the core pulling assembly 30 to rise, the ejector pin 43 is inserted into the ejector hole 122 of the fixed mold 10 to support the sprue material 210 connected to the product 200, and drives the sprue material 210 to rise to disengage from the die groove 121, thereby assisting in lifting the product 200 and preventing the sprue material 210 from getting stuck in the die groove 121, causing the product 200 to be damaged by being pulled by the fixed mold 10 and the sprue material 210 when it rises, thereby reducing the risk of damage to the product 200 when it is demolded.

[0121] It should be noted that in the embodiment of the present application, the ejector pin 43 and the material extraction channel 1213 may be provided in the injection mold 100 at the same time, or only one of the ejector pin 43 or the material extraction channel 1213 may be provided.

[0122] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. An injection mold for preventing product surface damage, characterized in that: The injection mold comprises: A fixed die, wherein a surface of the fixed die is provided with a die groove, and the die groove has a side inlet; A movable mold, which can be molded together with the fixed mold to close the concave mold groove to form a cavity; A core pulling assembly, which is disposed on the fixed mold and is provided with a core structure, and the core structure can be passed through the side inlet to be inserted into the die groove; and A lifting component is arranged below the core pulling component and can support the core pulling component to drive the core pulling component to rise and fall.

2. The injection mold according to claim 1, characterized in that: The core pulling assembly comprises: a movable block, the movable block being movably disposed on the fixed mold; and A sliding core-pulling mechanism, which is slidably disposed on the movable block and is provided with the core structure, and can slide back and forth along the arrangement direction of the side inlet and the die groove; The lifting assembly can support the movable block to drive the core pulling assembly to rise and fall.

3. The injection mold according to claim 2, characterized in that: The movable block comprises a bearing portion and two side portions which are arranged opposite to each other, and the sliding core-pulling mechanism is slidably arranged on the bearing portion and is located between the two side portions.

4. The injection mold according to claim 2, characterized in that: The sliding core-pulling mechanism comprises: A first row seat, the first row seat is slidably disposed on the movable block to approach or move away from the die groove; A second slider seat, the second slider seat is slidably disposed on the first slider seat to approach or move away from the die groove, and has a first position, a second position, and a third position, at least a portion of the second slider seat is contracted toward the die groove to form two guide inclined surfaces disposed back to back; and Two undercut inserts, both of which are arranged on the first row seat, and each of which is slidably connected to one of the guide slopes; The core structure comprises a first core arranged at the end of the second row seat and two second cores respectively arranged at the ends of the two undercut inserts; When the second row seat is located at the first position, the first core and the two second cores are both located in the die groove; when the second row seat is from the second position to the third position, it is locked with the first row seat to drive the first row seat and the undercut insert to slide.

5. The injection mold according to claim 4, characterized in that: The injection mold further comprises an inclined guide piece, which extends from the movable mold toward the fixed mold and is inclined in a direction away from the concave mold groove along the sliding direction of the second row seat; An inclined hole is formed on the top surface of the second row seat, and the inclined hole extends in the depth direction away from the die groove, and the inclined guide piece can enter and exit the inclined hole to drive the second row seat to slide; Wherein, when the second row seat is located at the third position, a part of the structure of the second core is located in the die groove.

6. The injection mold according to claim 1, characterized in that: The injection mold further comprises a base, the base is arranged below the fixed mold, and a surface of the base facing the fixed mold is provided with two supporting parts arranged opposite to each other, and a movable space is formed between the two supporting parts; The fixed mold is supported on the supporting part, and a avoidance hole is opened in the fixed mold which passes through the activity space. The core pulling assembly is carried by the fixed mold, and at least part of the lifting assembly can be passed through the avoidance hole to abut against the core pulling assembly.

7. The injection mold according to claim 6, characterized in that: The lifting assembly comprises: A mounting seat, which is movably disposed in the activity space and is arranged opposite to the fixed mold; and A supporting member is protrudingly arranged on a surface of the mounting seat facing the fixed mold and can be penetrated through the avoidance hole.

8. The injection mold according to claim 7, characterized in that: The injection mold further comprises a guide column, the guide column is arranged in the activity space, and the mounting seat is escalably mounted on the guide column; And / or, the side wall of the support portion facing the activity space is provided with one of a guide groove and a guide portion, the side wall of the mounting seat is provided with the other of a guide groove and a guide portion, and the guide portion is provided in the guide groove; And / or, a limiter is provided on a surface of the mounting seat facing the fixed mold, and the limiter can be used to limit the rising height of the mounting seat; And / or, a limiter is provided on the bottom surface of the fixed mold, and the limiter can be used to limit the rising height of the mounting seat; And / or, a limiting column is convexly provided on the surface of the mounting seat facing the fixed mold, and the limiting column is inserted into the fixed mold in a liftable manner; And / or, the injection mold further comprises an elastic buffer, wherein the elastic buffer is sandwiched between the mounting seat and the fixed mold; And / or, the injection mold further comprises a position detector, and the position detector can be used to detect the lifting position of the lifting component or the core pulling component.

9. The injection mold according to claim 6, characterized in that: The fixed mold comprises a fixed seat and a rear mold core, the fixed seat is formed with a mounting groove, and the bottom wall of the mounting groove is provided with an avoidance hole; The core pulling assembly and the rear mold core are both arranged in the installation groove, the rear mold core is provided with the die groove and the side inlet, and at least part of the lifting assembly is passed through the avoidance hole and arranged opposite to the core pulling assembly.

10. The injection mold according to any one of claims 1 to 9, characterized in that The die groove comprises a product trough and a sprue flow channel which are interconnected, the product trough is used to form the product, and the core structure is arranged in the product trough; The bottom of the fixed die is provided with an ejector hole connected to the nozzle flow channel of the concave die groove, and the lifting assembly further includes an ejector pin, which extends in a vertical direction and is inserted into the ejector pin hole to support the nozzle material in the nozzle flow channel when the lifting assembly rises; And / or, the die groove further includes a material taking channel, the material taking channel is connected to the sprue channel, the material taking channel is used to form a material taking part, and the material taking structure can remove the product from the core pulling assembly by picking up the material taking part.

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