Mold ejection mechanism and mold

Abstract

The application provides a mold ejection mechanism and a mold. The mold ejection mechanism comprises a transmission assembly arranged on a lower mold of the mold, a first sliding block arranged on one side of the transmission assembly, and a second sliding block and a top block which are sequentially arranged on the top of the transmission assembly. The transmission assembly, the first sliding block, the second sliding block, the top block and an upper mold of the mold form a cavity. The cavity is used for forming an undercut. The transmission assembly is driven to move away from the formed undercut. The first sliding block is connected to the upper mold through a first guide part and can move away from the undercut when the upper mold rises. The top block is arranged on an ejector in the lower mold. A second guide part is arranged between the ejector and the second sliding block. When the ejector drives the top block to slide in a preset direction, the top block can lift the undercut, and the second sliding block can move away from the undercut. The mold ejection mechanism can drive the second sliding block to retreat and avoid the undercut when the product is ejected, which is convenient for the ejection of the product and can save the driving structure and facilitate the realization of automatic picking by a mechanical hand.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic forming equipment, in particular to a mold ejection mechanism, and also relates to a mold provided with the mold ejection mechanism. BACKGROUND

[0002] At present, the left and right trim panels and other components of the automobile tailgate are relatively compact in product modeling, so that there is not enough design space for the injection mold. Therefore, in order to facilitate the mold ejection of the injection mold, the product modeling is designed to be relatively traditional to avoid large area undercut. Moreover, in the prior art, a tunnel type inclined slide block is generally used to demold the product undercut part. First, the mold is separated by the mold opening action of the injection molding machine, and the slide block is pulled open by the inclined guide pillar of the fixed mold. Then, the inclined slide block is pulled away from the product undercut contour line by more than 2mm through the oil cylinder, and the product is pushed out upward by the top block through the mold ejection mechanism.

[0003] However, due to the narrow space of the product, interference occurs when the product is ejected, which cannot be normally ejected, so that the mold cannot realize large undercut product modeling at the present stage. In addition, it is also impossible to realize automatic grabbing by the mechanical hand, and only manual part taking can be completed, so that the existing mold can only produce products with small amount of undercut modeling. SUMMARY

[0004] Therefore, the present application aims to provide a mold ejection mechanism to facilitate the ejection of products with undercut, which is beneficial to the mold to realize large undercut product modeling.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0006] A mold ejection mechanism for ejecting products with undercut, the mold ejection mechanism comprising a transmission assembly arranged on a lower mold of a mold, a first slide block arranged on one side of the transmission assembly, and a second slide block and a top block arranged in sequence on the top of the transmission assembly, and the transmission assembly, the first slide block, the second slide block, the top block and the upper mold of the mold form a molding cavity therebetween, and the molding cavity is used for molding the undercut;

[0007] The transmission assembly is driven to be away from the molded undercut, the first slide block is connected to the upper mold through a first guide part, and the first slide block can be away from the undercut with the rising of the upper mold under the guidance of the first guide part;

[0008] The top block is arranged on an ejector in the lower mold, and a second guide part is arranged between the ejector and the second slide block. When the ejector drives the top block to slide in a predetermined direction, the top block can lift the undercut, and the second slide block can be away from the undercut under the guidance of the second guide part.

[0009] Furthermore, when the ejector causes the top block to slide along the preset direction, the undercut is lifted to a preset height, and the second slider moves away from the undercut under the guidance of the second guide.

[0010] Furthermore, the top of the second slider is provided with a groove with a top opening, and the top block is embedded in the groove.

[0011] Furthermore, the ejector includes a top plate, and an ejector pin and an ejector rod disposed on the top plate. The top plate is used to connect with an external drive unit. The ejector pin and the ejector rod are slidably disposed on the lower mold in the vertical direction. The ejector block is disposed on the ejector pin.

[0012] The second guide portion includes a second guide groove disposed on the top rod and a second guide post disposed on the second slider, the second guide post being inserted into the second guide groove.

[0013] Furthermore, the second guide groove includes a first straight segment and a second straight segment arranged at intervals along the vertical direction, and an oblique segment disposed between the two and arranged at an angle to both of them.

[0014] The second straight segment is located on the side of the first straight segment away from the cavity.

[0015] Furthermore, the first guide portion includes a first guide post disposed on the upper mold and a first guide groove disposed on the first slider;

[0016] From top to bottom, the first guide post is inclined to the side away from the cavity and inserted into the first guide groove.

[0017] Furthermore, guided by the first guide portion, the first slider moves away from the undercut in an upward oblique direction.

[0018] Furthermore, the transmission assembly includes a transmission block that slides horizontally on the lower mold, and a slanted slider that abuts against the transmission block via an inclined surface.

[0019] The cavity is formed by the inclined slider, the first slider, the second slider, the top block, and the upper mold of the mold.

[0020] Furthermore, a third guide portion is provided between the transmission block and the inclined slider, the third guide portion being used to guide the inclined slider to slide relative to the transmission block.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] The mold ejection mechanism has the transmission assembly, the first sliding block, the second sliding block and the top block, can make the transmission assembly and the first sliding block away from the reverse buckle, the second guide part is arranged, the linkage action between the second sliding block and the top block can be realized, the second sliding block can be driven to retreat and avoid the reverse buckle when the product is ejected, the product can be easily ejected, meanwhile, the driving structure can be saved, the mold is simplified, the production rhythm is improved, and the automatic taking of the mechanical hand is facilitated.

[0023] In addition, when the ejector drives the top block to slide in the preset direction, the reverse buckle is lifted to the preset height, and the second sliding block is guided away from the reverse buckle by the second guide part, so that the second sliding block is prevented from being blocked by the top block, and the second sliding block is facilitated to move away from the reverse buckle. The recess with a top opening is arranged on the top of the second sliding block, and the top block is embedded in the recess, so that the stability of the cooperation between the top block and the second sliding block is improved, and the stability of the cavity is facilitated to be maintained. The ejector includes a top plate, a top pin and a top rod arranged on the top plate, which is convenient for the ejector to be connected with the external driving part through the top plate, and is convenient for the second guide part to be arranged between the ejector and the second sliding block, and the second guide part adopts a second guide groove and a second guide column, which is simple in structure and convenient for design and implementation.

[0024] Secondly, the second guide groove includes a first straight line segment, a second straight line segment arranged in the up-down direction, and an oblique line segment arranged between the two and at an angle with the two, so that the reverse buckle is lifted to the preset height, and the structure is simple and convenient for design and implementation. The first guide part includes a first guide column arranged on the upper die and a first guide groove arranged on the first sliding block, which is simple in structure and convenient for processing and manufacturing. The first sliding block is guided by the first guide part to move away from the reverse buckle in an oblique upward direction, so that the first sliding block can quickly move away from the reverse buckle, and interference with the reverse buckle can be effectively prevented.

[0025] In addition, the transmission assembly includes a transmission block arranged on the lower die and sliding in the horizontal direction, and an inclined sliding block abutting against the inclined surface of the transmission block, so that the inclined sliding block can slide downward obliquely under the guidance of the inclined surface, thereby quickly moving away from the reverse buckle, and interference with the reverse buckle can be effectively prevented. The third guide part is arranged between the transmission block and the inclined sliding block, so that the sliding smoothness of the inclined sliding block is improved.

[0026] Another object of the present application is to provide a mold for preparing a product with a reverse buckle, which comprises the mold ejection mechanism as described above, a first driving part for driving the transmission assembly to act, and a second driving part for driving the ejector to slide in the preset direction.

[0027] The mold has the mold ejection mechanism as described above, which is convenient for ejecting the product with the reverse buckle, can realize the automatic taking of the mechanical hand, and can also prepare the product with a large reverse buckle, so that better use effect can be achieved. Attached Figure Description

[0028] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0029] Figure 1 This is a schematic diagram of the mold structure according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the mold described in an embodiment of the present invention from another perspective;

[0031] Figure 3 This is a structural schematic diagram of the mold described in an embodiment of the present invention from another perspective;

[0032] Figure 4 This is a cross-sectional view of the mold described in an embodiment of the present invention;

[0033] Figure 5 This is a partial structural diagram of the mold described in an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the mold ejection mechanism according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the mold ejection mechanism described in an embodiment of the present invention from another perspective;

[0036] Figure 8 This is a partial structural schematic diagram of the mold ejection mechanism described in an embodiment of the present invention;

[0037] Figure 9 This is a schematic diagram of the structure of the first slider according to an embodiment of the present invention;

[0038] Figure 10 This is a schematic diagram of the structure of the second slider according to an embodiment of the present invention;

[0039] Figure 11 This is a schematic diagram of the top block structure according to an embodiment of the present invention;

[0040] Figure 12 This is a schematic diagram of the transmission assembly described in an embodiment of the present invention;

[0041] Figure 13 This is a schematic diagram of the transmission block according to an embodiment of the present invention;

[0042] Figure 14 This is a schematic diagram of the oblique slider described in an embodiment of the present invention;

[0043] Figure 15A state diagram of the mold described in the embodiment of the present application in the state of the upper mold being raised;

[0044] Figure 16 A state diagram of the mold described in the embodiment of the present application when the first slider is away from the inverted buckle;

[0045] Figure 17 A state diagram of the mold described in the embodiment of the present application when the first slider and the transmission assembly are away from the inverted buckle;

[0046] Figure 18 A state diagram of the mold described in the embodiment of the present application when the inverted buckle is ejected;

[0047] BRIEF DESCRIPTION OF DRAWINGS

[0048] 1, lower mold; 2, upper mold; 3, upper press plate; 4, lower press plate; 5, mold foot; 6, first oil cylinder; 7, mounting seat; 8, second oil cylinder; 9, top plate; 10, first slider; 11, first guide column; 12, transmission block; 13, inclined slider; 14, second slider; 15, top block; 16, ejector pin; 17, ejector rod; 18, guide block; 19, second guide column; K, inverted buckle;

[0049] 1301, third guide groove; 1401, groove;

[0050] 1701, first straight line segment; 1702, oblique line segment; 1703, second straight line segment. DETAILED DESCRIPTION

[0051] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0052] In the following description, specific details are set forth in order to provide a thorough understanding of embodiments of the application. However, persons having ordinary skill in the art will appreciate that embodiments of the application can be practiced without the specific details, and that the present application is not limited to the details by description. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0053] In the description of the present application, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer" and the like appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second" and the like appear, they are also only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0054] Furthermore, in the description of the present application, unless otherwise explicitly defined, the components are connected by means of conventional connection structure in the art. Moreover, the terms "mount", "connect", "connection", "connector" should be interpreted broadly. For example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in conjunction with the specific circumstances.

[0055] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0056] In view of the fact that the existing technology has difficulty in demolding the product reverse K part with the mold, so that only products with small reverse K can be produced, and large reverse K products cannot be produced. The present embodiment particularly proposes a new mold ejection mechanism. In the overall structure, it comprises a transmission assembly arranged on the lower mold 1 of the mold, a first sliding block 10 arranged on one side of the transmission assembly, and a second sliding block 14 and a top block 15 arranged in turn on the top of the transmission assembly, and the transmission assembly, the first sliding block 10, the second sliding block 14 and the top block 15 form a cavity with the upper mold 2 of the mold. The cavity is used for forming the reverse K.

[0057] Among them, the transmission assembly is driven to be away from the formed reverse K, the first sliding block 10 is connected with the upper mold 2 through the first guide part, and the first sliding block 10 can be away from the reverse K with the rising of the upper mold 2 under the guidance of the first guide part. The top block 15 is arranged on the ejector in the lower mold 1, and the second guide part is arranged between the ejector and the second sliding block 14. When the ejector drives the top block 15 to slide in the preset direction, the top block 15 can lift the reverse K, and the second sliding block 14 can be away from the reverse K under the guidance of the second guide part.

[0058] The mold ejection mechanism of the present embodiment can make the transmission assembly and the first sliding block 10 away from the reverse K by arranging the transmission assembly, the first sliding block 10, the second sliding block 14 and the top block 15. The second guide part can realize the linkage action between the second sliding block 14 and the top block 15. Not only can it drive the second sliding block 14 to retreat and avoid the reverse K after linkage when the product is ejected, which is convenient for product ejection and taking, but also can save the driving structure, simplify the mold, improve the production rhythm, and also facilitate the realization of automatic taking by the mechanical hand.

[0059] Based on the overall introduction as above, one exemplary structure of the mold ejection mechanism of the present embodiment is shown in Figures 1 to 8 In order to facilitate the description, the ejection mechanism is described in conjunction with the overall structure of the mold. In conjunction with Figures 1 to 4As shown in the drawings, the mold of the embodiment comprises an upper press plate 3 for mounting the upper mold 2, a lower press plate 4 provided with a mold foot 5, and a lower mold 1 provided on the mold foot 5. A cavity is formed between the lower mold 1 and the mold foot 5, and the part ejector is provided in the cavity. The other structures of the mold can refer to the prior art, and the embodiment mainly focuses on the ejector mechanism.

[0060] In addition, as shown in the drawings, Figure 1 and Figure 2 The first driving part for driving the transmission assembly and the second driving part for driving the ejector are both provided on the lower mold 1. As a preferred embodiment, the first driving part of the embodiment is a first oil cylinder 6, which is mounted on the lower mold 1 through a mounting seat 7, and the second driving part is a second oil cylinder 8, which is directly mounted on the lower mold 1. It can be understood that, in addition to using an oil cylinder, other driving parts that can output linear force are also feasible.

[0061] In addition, as a preferred embodiment, in order to improve the production effect, the transmission assembly, the first sliding block 10, the second sliding block 14 and the ejector block 15 of the embodiment are all two relatively arranged, so that two parts arranged symmetrically can be produced at the same time. As a specific embodiment, the mold of the embodiment is used to produce left and right trim panels of a tailgate, which can make the left and right trim panels have a larger undercut angle α, so as to have better aesthetic and use effect. It should be noted that the cavity shape can also be adjusted accordingly to produce other shaped products. For example, in addition to producing products with only an undercut K, other products with other structures in addition to the undercut K can also be produced.

[0062] Specifically, as shown in the drawings, Figure 4 The undercut K is roughly U-shaped with the opening facing obliquely downward, and has a top wall, and upper and lower side walls provided on both sides of the top wall. As a specific embodiment, the angle α between the lower side wall of the undercut K and the horizontal direction is 59°, and the upper side wall is roughly parallel to the lower side wall. Of course, during specific implementation, the angle α can be adjusted accordingly according to different part requirements. In addition, the structure of the first sliding block 10 of the embodiment is shown in Figure 4 and Figure 9 The top of the first sliding block 10 has a protrusion, which is inserted into a groove 1401 at the bottom of the upper mold 2 to improve the stability of the setting, thereby ensuring the stability of the cavity.

[0063] Secondly, as a preferred embodiment, the first slider 10 is guided by the first guide portion to move away from the undercut K in an obliquely upward direction. In this way, the first slider 10 can quickly move away from the undercut K under the guidance of the first guide portion, which can effectively prevent interference with the undercut K. Based on this, as shown in FIG. 6, the top of the lower mold 1 has an obliquely upward bearing surface, and the bottom of the first slider 10 abuts against the bearing surface. Figure 4

[0064] In addition, as a preferred embodiment, the first guide portion of the present embodiment includes a first guide column 11 arranged on the upper mold 2 and a first guide groove arranged on the first slider 10. From top to bottom, the first guide column 11 is arranged obliquely away from the cavity, and is inserted into the first guide groove. In this way, when the upper mold 2 rises, the first slider 10 can be pushed by the first guide column 11 to slide obliquely upward along the bearing surface, thereby quickly moving away from the cavity.

[0065] It should be noted that in addition to moving the first slider 10 away from the undercut K in an obliquely upward direction, the first slider 10 can also be moved away from the undercut K in other directions, such as in a horizontally right direction. In this case, the bearing surface can be a horizontal plane. In addition, instead of arranging the first guide column 11 on the upper mold 2 and the first guide groove on the first slider 10, the first guide column 11 can be arranged on the first slider 10, and the first guide groove can be arranged on the upper mold 2.

[0066] In combination with the description in Figure 4 Figures 6 to 8 As a preferred embodiment, the ejector of the present embodiment includes a top plate 9, a ejector pin 16 and a ejector rod 17 arranged on the top plate 9. The top plate 9 is connected to an external driving portion, the ejector pin 16 and the ejector rod 17 are arranged on the lower mold 1 in an up-down direction, and the second guide portion includes a second guide groove arranged on the ejector rod 17 and a second guide column 19 arranged on the second slider 14, which is inserted into the second guide groove.

[0067] The ejector of the present embodiment includes a top plate 9, a ejector pin 16 and a ejector rod 17 arranged on the top plate 9. Not only is it convenient for the ejector to be connected to the external driving portion (i.e., the second oil cylinder 8) through the top plate 9, but it is also convenient for the second guide portion to be arranged between the ejector and the second slider 14. The second guide portion uses a second guide groove and a second guide column 19, which has the advantages of simple structure and easy design and implementation. In addition, to further improve the linkage effect of the second slider 14, the second guide portion is arranged in two opposite directions.

[0068] ​​Furthermore, as a further implementation, in this embodiment, when the ejector drives the top block 15 to slide along a preset direction, after the inverted buckle K is lifted to a preset height, the second slider 14 moves away from the inverted buckle K under the guidance of the second guide portion. This arrangement prevents the top block 15 from blocking the second slider 14, facilitating the second slider 14 to move away from the inverted buckle K. In one specific embodiment, the structure of the second slider 14 is as follows... Figure 10 As shown, there are protruding connecting blocks on the left and right sides along the length direction, and each connecting block has a socket for inserting the second guide post 19.

[0069] Continue to refer to Figure 4 and Figure 10 As shown in the diagram, in a further embodiment, the top of the second slider 14 is provided with a groove 1401 with a top opening, and the top block 15 is embedded in the groove 1401. This design improves the stability of the fit between the top block 15 and the second slider 14, which is beneficial for maintaining the stability of the cavity. The structure of the top block 15 is shown in the diagram. Figure 4 and Figure 10 As shown, it conforms to the groove 1401 of the second slider 14 and has a profile conforming to the side surface of the undercut K. Furthermore, to improve the stability of the product's ejection process, as a preferred embodiment, such as... Figure 10 As shown, there are two grooves 1401 arranged at intervals, and correspondingly, there are also two top blocks 15. Of course, in addition to being arranged in two at intervals, the number of grooves 1401 and top blocks 15 can also be adjusted according to design requirements.

[0070] Here, based on the above description, as a preferred embodiment, combined with Figure 4 and Figure 8 As shown, the second guide groove in this embodiment includes a first straight segment 1701 and a second straight segment 1703 arranged at intervals along the vertical direction, and an oblique segment 1702 disposed between the two and at an angle to both. The second straight segment 1703 is located on the side of the first straight segment 1701 away from the cavity. In this embodiment, this structure achieves the effect of lifting the undercut K to a preset height; the structure is simple and easy to design and implement.

[0071] To prevent interference between the second slider 14 and the inverted buckle K, the included angle β between the oblique line segment 1702 and the first straight line segment 1701 and the second straight line segment 1703 is preferably set to be at least 5° smaller than the included angle α. In this embodiment, the included angle α is specifically 59°, and the included angle β is 54°. Of course, when the included angle α changes, the included angle β can be adjusted accordingly.

[0072] Additionally, it should be mentioned that, besides causing the ejector to slide the top block 15 along a preset direction, after the undercut K is lifted to a preset height, the second slider 14 moves away from the undercut K under the guidance of the second guide portion. Alternatively, the top block 15 and the second slider 14 can move synchronously. In this case, the groove 1401 on the top of the second slider 14 does not need to be provided to prevent the top block 15 from obstructing the movement of the second slider 14. At the same time, the second straight section 1703 of the second guide groove also needs to be provided.

[0073] Reference Figure 4 and Figure 12 As shown in the diagram, in a preferred embodiment, the transmission assembly includes a transmission block 12 slidably mounted on the lower mold 1 in a horizontal direction, and a sloping slider 13 abutting against the transmission block 12 via an inclined surface. The sloping slider 13, the first slider 10, the second slider 14, the top block 15, and the upper mold 2 together form a cavity. The transmission assembly of this embodiment, including the transmission block 12 slidably mounted on the lower mold 1 in a horizontal direction and the sloping slider 13 abutting against the transmission block 12 via an inclined surface, allows the sloping slider 13 to slide obliquely downwards under the guidance of the inclined surface, thereby quickly moving away from the undercut K and effectively preventing interference with the undercut K.

[0074] Among them, such as Figure 4 As shown in the diagram, in a preferred embodiment, the inclined plane is perpendicular to the horizontal direction (i.e., Figure 4 The included angle between the left and right directions (as shown in the state) is set between 35° and 40°, preferably 37°, to better adapt to the angle of the aforementioned inverted K, so that the inclined slider 13 can quickly move away from the inverted K. The specific structure of the transmission block 12 is as follows: Figure 13 As shown, it is roughly rectangular in shape, and one side has a mating surface adapted to the inclined slider 13. The structure of the inclined slider 13 is as follows: Figure 14 As shown, it has an adapter surface adapted to the lower side wall of the inverted K, and the aforementioned inclined surface connected to the transmission block 12.

[0075] In this embodiment, as a further implementation, a third guide portion is provided between the transmission block 12 and the inclined slider 13. This third guide portion guides the inclined slider 13 to slide relative to the transmission block 12. The provision of this third guide portion improves the smoothness of the sliding of the inclined slider 13. Furthermore, in conjunction with… Figure 4 , Figure 13 and Figure 14 As shown in the figure, in a preferred embodiment, the third guide portion of this embodiment includes a guide block 18 provided on the transmission block 12 and a third guide groove 1301 provided on the inclined slider 13, with the top of the guide block 18 inserted into the third guide groove 1301.

[0076] Specifically, such as Figure 13In the embodiment, the cross section of the guide block 18 is substantially T-shaped, and the top thereof is arranged protruding relative to the matching surface of the transmission block 12. As shown in Figure 14 In the embodiment, the third guide groove 1301 is a T-shaped groove adapted to the top of the guide block 18. In order to further improve the sliding smoothness of the inclined sliding block 13, the guide block 18 and the third guide groove 1301 are both arranged in pairs. It can be understood that the number of the guide block 18 and the third guide groove 1301 is not limited to two, and can be adjusted according to the specific conditions.

[0077] It should be noted that, in addition to the transmission assembly including the transmission block 12 and the inclined sliding block 13 abutting through the inclined surface, the inclined sliding block 13 can also be included, and in this case, the first driving part is directly connected with the inclined sliding block 13, but in this case, the difficulty of preparing the mold can be increased.

[0078] Based on the above description, the following will be described in combination with Figures 15 to 18 The ejection process of the mold ejection mechanism will be introduced as shown in the embodiment. First, as shown in Figure 15 As shown in the embodiment, the upper mold 2 is lifted by the mold opening action, and is separated from the lower mold 1, and in this case, the first sliding block 10 is driven to move away from the undercut K in the upward and inclined direction under the guidance of the first guide part. Then, as shown in the embodiment, the transmission block 12 is driven to slide to the left by the first oil cylinder 6, and in this case, the inclined sliding block 13 is guided to move away from the undercut K in the downward and inclined direction by the inclined surface. Figure 16

[0079] Further, the top plate 9 drives the ejector pin 16 and the ejector rod 17 to slide in the preset direction, that is, to slide upward, and in this process, the top block 15 first lifts the undercut K, and the second guide column 19 remains stationary in the first linear segment 1701. When the inclined segment 1702 slides to cooperate with the second guide column 19, that is, after the undercut K is lifted to the preset height, at this time, the top block 15 generates a space for the second sliding block 14 to avoid, the second guide column 19 is pushed by the side wall of the inclined segment 1702, and drives the second sliding block 14 to slide to the left to a distance of more than 5mm from the contour line of the undercut K, and then the product is taken out by the mechanical hand.

[0080] The mold ejection mechanism of the embodiment can make the mold prepared product have a large undercut K, facilitate the product to be ejected from the mold, and realize the improvement from manual taking to automatic taking by the mechanical hand, thereby greatly improving the safety, production stability and reduction of production rhythm in the production process. Moreover, the linkage action of the transmission assembly and the second sliding block 14 can be realized by one driving part, thereby simplifying the mold and reducing the cost.

[0081] ​In addition, the embodiment also relates to a mold for preparing a product with an undercut K, the mold comprising the mold ejection mechanism as above, a first driving part for driving the transmission assembly to act, and a second driving part for driving the ejector to slide in a preset direction. The first driving part and the second driving part can be other driving parts such as oil cylinders that output linear power.

[0082] The mold of the embodiment can not only facilitate the ejection of the product with the undercut K, but also can realize automatic taking of the product by the manipulator, and can prepare the product with a large undercut K, so that the mold has good use effect.

[0083] The above-mentioned embodiment only expresses the preferred embodiment of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications, improvements and substitutions can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

[0084] In the description of the present application, the "first feature" and the "second feature" can include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more. In the description of the present application, the "above" or "below" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. In the description of the present application, the "above", "over" and "on" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height.

Claims

1. A mold ejection mechanism for ejecting a product with a undercut (K), characterized in that... ； The mold ejection mechanism includes a transmission component on the lower mold (1) of the mold, a first slider (10) on one side of the transmission component, and a second slider (14) and a top block (15) stacked on top of the transmission component in sequence. The transmission component, the first slider (10), the second slider (14), the top block (15) and the upper mold (2) of the mold form a cavity, which is used to form the undercut (K). The transmission assembly is driven to move away from the formed undercut (K). The first slider (10) is connected to the upper mold (2) through the first guide portion, and the first slider (10) is guided by the first guide portion to move away from the undercut (K) as the upper mold (2) rises. The top block (15) is provided on the ejector in the lower mold (1), and a second guide is provided between the ejector and the second slider (14). When the ejector drives the top block (15) to slide in a preset direction, the top block (15) can lift the undercut (K), and the second slider (14) can move away from the undercut (K) under the guidance of the second guide. The transmission assembly includes a transmission block (12) that slides horizontally on the lower mold (1), and a sloping slider (13) that abuts against the transmission block (12) through an inclined surface. The cavity is formed by the inclined slider (13), the first slider (10), the second slider (14), the top block (15), and the upper mold (2) of the mold. The ejector includes a top plate (9), and ejector pins (16) and ejector rods (17) disposed on the top plate (9). The top plate (9) is used to connect with an external drive unit. The ejector pins (16) and ejector rods (17) are slidably disposed on the lower mold (1) in the up-down direction. The ejector block (15) is disposed on the ejector pins (16). The second guide portion includes a second guide groove provided on the top rod (17) and a second guide post (19) provided on the second slider (14). The second guide post (19) is inserted in the second guide groove. The second guide groove includes a first straight segment (1701) and a second straight segment (1703) arranged at intervals in the vertical direction, and an oblique segment (1702) provided between the two and arranged at an angle to both. The second straight segment (1703) is provided on the side of the first straight segment (1701) away from the cavity.

2. The mold ejection mechanism according to claim 1, characterized in that: When the ejector drives the top block (15) to slide along the preset direction, the buckle (K) is lifted to the preset height, and the second slider (14) moves away from the buckle (K) under the guidance of the second guide.

3. The mold ejection mechanism according to claim 2, characterized in that: The second slider (14) has a groove (1401) with a top opening at the top, and the top block (15) is embedded in the groove (1401).

4. The mold ejection mechanism according to claim 1, characterized in that: The first guide portion includes a first guide post (11) disposed on the upper mold (2) and a first guide groove disposed on the first slider (10); From top to bottom, the first guide post (11) is inclined to the side away from the cavity and inserted into the first guide groove.

5. The mold ejection mechanism according to claim 1, characterized in that: Guided by the first guide portion, the first slider (10) moves away from the undercut (K) in an oblique upward direction.

6. The mold ejection mechanism according to claim 5, characterized in that: A third guide portion is provided between the transmission block (12) and the inclined slider (13), and the third guide portion is used to guide the inclined slider (13) to slide relative to the transmission block (12).

7. A mold for producing a product having an undercut (K), characterized in that: The mold includes a mold ejection mechanism as described in any one of claims 1 to 6, a first drive unit for driving the transmission assembly to move, and a second drive unit for driving the ejector to slide along the preset direction.

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