Downhill insert steering mechanism and mold capable of being subjected to upside-down demolding
By designing a downward-sloping insert steering mechanism, and utilizing the cooperation of the slider and guide post, the demolding problem caused by excessively long insert movement distance was solved, thus simplifying the mold structure and improving demolding efficiency.
Patent Information
- Application Number
- CN202520145095.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-22
AI Technical Summary
The large downward movement distance of the inserts in the existing mold increases the difficulty of demolding the undercut structure, and increases the complexity and size of the mold structure.
Design a downhill insert steering mechanism that uses the horizontal movement of the slider to drive the insert to tilt downwards. The stability and reliability of the slider in the non-demolding state are ensured by the cooperation of the fixed block and the guide post. The movement of the insert is guided by the cooperation of the guide rail and the groove, which increases stability and reliability.
It reduces the movement distance of the inserts, lowers the demolding difficulty, simplifies the mold structure, and improves demolding efficiency and the service life of the inserts.
Smart Images
Figure CN223790929U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to mould technical field especially relates to a downhill insert block steering mechanism and mould of inverted buckle demoulding. BACKGROUND
[0002] In the mould manufacturing field, when the product has an inverted buckle structure, an insert block is usually provided to form the inverted buckle structure alone, thereby facilitating demoulding of the product. In some products, the insert block is usually separated from the inverted buckle structure by sliding downward. However, when the angle between the inverted buckle direction and the horizontal direction is large, the insert block moves a large distance downward, which not only increases the difficulty of demoulding, but also increases the complexity of the overall structure of the mould and the overall size of the mould.
[0003] Therefore, it is of great significance to design a steering mechanism that can reduce the movement range of the insert block for demoulding of the inverted buckle structure. SUMMARY
[0004] Therefore, the utility model provides a downhill insert block steering mechanism to solve the problem of difficult demoulding of the inverted buckle structure.
[0005] The utility model provides a downhill insert block steering mechanism, which is applied to an injection mould, and the upper end of the insert block is used to form an inverted buckle structure; the steering mechanism comprises:
[0006] A sliding block is provided with a matching surface, and the matching surface is inclined from bottom to top towards the direction close to the center of the sliding block; the insert block is connected to the sliding block and can slide along the matching surface; and the sliding block can slide along the horizontal direction;
[0007] A fixed block is located above the sliding block and is used to block the sliding of the sliding block along the horizontal direction away from the insert block;
[0008] A guide column is connected to the fixed block and is used to drive the movement of the fixed block;
[0009] When the guide column drives the fixed block to move upward, the fixed block is separated from the sliding block, the sliding block moves away from the insert block, and the insert block slides downward along the matching surface to separate the insert block from the inverted buckle structure.
[0010] The technical scheme utilizes the horizontal movement of the sliding block to drive the downward inclined movement of the insert block, so that the insert block is smoothly separated from the inverted buckle structure; the fixed block is used to exert a force on the sliding block to block the horizontal movement of the sliding block, thereby ensuring the stability of the sliding block in the non-demoulding state; the guide column is used to drive the movement of the fixed block to remove the force of the fixed block on the sliding block in the demoulding state, and the fixed block is used to exert a force on the sliding block in the non-demoulding state, thereby ensuring the reliability of the sliding block.
[0011] In some embodiments, a guide rail is arranged on the matching surface, the guide rail protrudes from the matching surface and extends along the inclined direction of the matching surface; a groove is arranged on the insert block, and the guide rail is arranged in the groove.
[0012] According to the technical scheme, the guide rail is arranged on the sliding block and the groove is arranged on the insert block, at least part of the guide rail is arranged in the groove, the movement of the insert block is guided by the cooperation of the guide rail and the groove, and the stability and reliability of the movement of the insert block are ensured.
[0013] In some embodiments, the guide rail is T-shaped, the groove is also T-shaped, and the groove extends through the insert block along the extension direction of the guide rail.
[0014] According to the technical scheme, the guide rail and the groove are designed as T-shaped, the guide rail and the groove interfere with each other in the direction perpendicular to the matching surface, the guide rail is prevented from being separated from the insert block during the movement of the insert block, and the stability and reliability of the movement of the insert block are ensured.
[0015] In some embodiments, the guide column is arranged to tilt towards the center of the sliding block from bottom to top, and the tilt direction of the guide column is opposite to the tilt direction of the matching surface in the vertical plane.
[0016] In some embodiments, the fixed block is provided with an extension part, and the extension part is located on the side of the sliding block away from the insert block.
[0017] According to the technical scheme, the extension part is arranged on the fixed block to increase the contact area between the fixed block and the sliding block, the blocking effect of the fixed block on the sliding block is increased, the extension part is arranged on the side of the sliding block away from the insert block, the extension part blocks the sliding block, and the blocking effect of the fixed block on the sliding block is further increased.
[0018] In some embodiments, the sliding block is provided with a through hole through which the guide column passes, and the guide column is connected to the fixed block through the through hole.
[0019] In some embodiments, a wear-resistant plate is mounted on the bottom of the sliding block, and the wear-resistant plate moves synchronously with the sliding block.
[0020] According to the technical scheme, the wear-resistant plate is mounted on the bottom of the sliding block, the wear-resistant plate moves synchronously with the sliding block, the bottom of the sliding block is protected, the friction and wear between the sliding block and other components (such as the bottom surface of the mold or other supporting surfaces) during the movement of the sliding block are reduced, and the service life of the sliding block is prolonged. In addition, the wear-resistant plate can also reduce the resistance and jamming phenomenon caused by friction, ensure that the sliding block can move quickly, and improve the working efficiency of the whole mechanism.
[0021] In addition, the utility model provides a mould of demoulding of inverted buckle, including the above-mentioned downhill insert block steering mechanism, and the mould further includes:
[0022] The upper die is provided with a first forming part at the bottom of the upper die;
[0023] The lower die is provided with a second forming part at the top of the lower die, and the first forming part and the second forming part are oppositely arranged in the vertical direction.
[0024] In some embodiments, the lower die is connected with a connecting piece which moves synchronously with the lower die; the connecting piece is connected to the insert block and can slide relative to the insert block.
[0025] In some embodiments, the insert block is provided with a protruding part which is inclined from top to bottom towards the direction close to the sliding block, and the connecting piece is provided with a connecting part which cooperates with the protruding part to limit the movement track of the insert block.
[0026] The downward insert block turning mechanism utilizes the horizontal movement of the sliding block to drive the downward inclined movement of the insert block, so that the insert block smoothly separates from the inverted buckle structure; the fixed block is used to apply force to the sliding block to block the horizontal movement of the sliding block, thereby ensuring the stability of the sliding block in the non-demolding state; the guide column is used to drive the movement of the fixed block to remove the force of the fixed block on the sliding block in the demolding state, and the fixed block is used to apply force to the sliding block in the non-demolding state, thereby ensuring the reliability of the sliding block. BRIEF DESCRIPTION OF DRAWINGS
[0027] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. In the drawings:
[0028] Figure 1 It is a structure schematic view of the injection mold;
[0029] Figure 2 It is an exploded view of the injection mold;
[0030] Figure 3 It is a structure schematic view of the product with inverted buckle structure;
[0031] Figure 4 It is a direction schematic view of product demolding;
[0032] Figure 5 It is a structure schematic view of the downward insert block turning mechanism of the present application;
[0033] Figure 6 It is a sectional view of the downward insert block turning mechanism of the present application;
[0034] Figure 7It is the structure schematic view of the slide block in the downhill insert block steering mechanism of the utility model;
[0035] Figure 8 It is the structure schematic view of the insert block in the downhill insert block steering mechanism of the utility model;
[0036] Figure 9 It is the structure schematic view of the connecting piece in the downhill insert block steering mechanism of the utility model;
[0037] Figure 10 It is the structure schematic view of the mutual cooperation of the insert block and the connecting piece in the downhill insert block steering mechanism of the utility model;
[0038] Figure 11 It is the structure schematic view of the demoulding of the reverse buckling structure in the downhill insert block steering mechanism of the utility model.
[0039] In the drawing,
[0040] 1, upper mould; 2, lower mould; 3, product; 4, insert block; 5, slide block; 6, wear plate; 7, fixed block; 8, guide column; 9, pressing block;
[0041] 21, connecting piece; 211, connecting part;
[0042] 31, reverse buckling structure;
[0043] 41, recess; 42, protruding part;
[0044] 51, cooperation face; 52, guide rail; 53, through hole; 54, cooperation part;
[0045] 71, extension part. DETAILED DESCRIPTION
[0046] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0047] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0048] In the description of the utility model, it is to be explained that, unless there is definite stipulation and limitation, the term "mount", "link", "connect" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connect, can be direct connection, also can be indirect connection through intermediate medium, can be the intercommunication of two elements inside. For ordinary skilled person in the art, the above-mentioned term can be understood in the specific meaning in the utility model with specific circumstances.
[0049] Injection molding is the thermoplastic or thermosetting plastics using plastic molding machine (injection molding machine) heating melt, under high pressure melt plastic injection into the pre-designed closed mold cavity, after cooling solidification, get a certain shape and size plastic product process.
[0050] Injection molding is a widely used in manufacturing industry molding process, the product is produced in the form of injection molding, the mold needs to be demolded.
[0051] As shown in Figure 1 and Figure 2 , the mold includes an upper die 1, a lower die 2 and an insert 4, the upper die 1 is defined to form a first forming part, the first forming part is located at the bottom of the upper die 1, the lower die 2 is arranged opposite to the upper die 1 in the vertical direction, the lower die 2 is defined to form a second forming part, the second forming part is located at the top of the lower die 2, the second forming part is arranged opposite to the first forming part in the vertical direction, the insert 4 is connected to the lower die 2, the upper end of the insert 4 is used to form the undercut structure 31 on the product 3, the first forming part, the second forming part and the insert 4 jointly define the product 3.
[0052] As shown in Figure 3 and Figure 4 , when the product 3 with the undercut structure 31 is demolded, the product 3 moves upward, the insert 4 moves downward obliquely, when the included angle between the undercut structure 31 and the horizontal direction is large, the insert 4 moves a large distance downward, which increases the difficulty of demolding the product 3.
[0053] Based on this, the utility model provides a downhill insert turning mechanism to reduce the distance of the insert 4 moving downward, reduce the difficulty of demolding the product 3, and not change the ejection direction.
[0054] As shown in Figure 5 and Figure 6As shown in a schematic embodiment of the down-inclined insert turning mechanism according to the utility model, the down-inclined insert turning mechanism is applied to an injection mold, and is used for realizing the separation of the insert 4 and the reverse buckling structure 31; the down-inclined insert turning mechanism comprises a sliding block 5, a fixed block 7 and a guide column 8; the sliding block 5 is connected to the insert 4, and is used for making the insert 4 move downwardly and obliquely, so that the insert 4 is separated from the reverse buckling structure 31; a matching surface 51 is formed on the sliding block 5, and the matching surface 51 is arranged obliquely from bottom to top and towards the center of the sliding block 5; the insert 4 can slide along the matching surface 51; the sliding block 5 can slide along the horizontal direction; when the sliding block 5 moves along the horizontal direction and away from the insert 4, the insert 4 moves downwardly along the matching surface 51; the fixed block 7 is located above the sliding block 5, and is used for blocking the sliding block 5 from sliding along the horizontal direction and away from the insert 4; the guide column 8 is connected to the fixed block 7, and is used for driving the fixed block 7 to move; when the guide column 8 drives the fixed block 7 to move upwardly, the fixed block 7 is separated from the sliding block 5, the sliding block 5 moves away from the insert 4, and the insert 4 slides downwardly along the matching surface 51, so that the insert 4 is separated from the reverse buckling structure 31.
[0055] The down-inclined insert turning mechanism utilizes the horizontal movement of the sliding block 5 to drive the insert 4 to move downwardly and obliquely, so that the insert 4 is separated from the reverse buckling structure 31 smoothly; the fixed block 7 is used for applying force to the sliding block 5, so as to block the horizontal movement of the sliding block 5 and ensure the stability of the sliding block 5 in the non-ejection state; the guide column 8 is used for driving the fixed block 7 to move, so as to remove the force applied by the fixed block 7 to the sliding block 5 in the ejection state, and apply the force by the fixed block 7 to the sliding block 5 in the non-ejection state, thereby ensuring the reliability of the sliding block 5.
[0056] It should be noted that the guide column 8 and the sliding block 5 are respectively connected with driving members, so as to drive the guide column 8 and the sliding block 5 to move; the driving members can be hydraulic cylinders, air cylinders and the like; the driving members belong to the conventional technical means in the field, and will not be described herein.
[0057] As shown in Figs. Figure 5 and Figure 6 The sliding block 5 is provided with a wear plate 6 at the bottom, and the wear plate 6 moves synchronously with the sliding block 5, so as to protect the bottom of the sliding block 5, reduce the friction and abrasion between the sliding block 5 and other components (such as the bottom surface of the mold or other supporting surfaces) during the movement, thereby prolonging the service life of the sliding block 5. In addition, the wear plate 6 can also reduce the resistance and jamming phenomenon caused by friction, ensure that the sliding block 5 can move quickly, and improve the working efficiency of the whole mechanism.
[0058] As shown in Figs. Figure 6As shown, the fixing block 7 has an extension 71, which is located on the side of the fixing block 7 away from the insert 4, and on the side of the slider 5 away from the insert 4. The extension 71 increases the contact area between the fixing block 7 and the slider 5, thereby increasing the blocking effect of the fixing block 7 on the slider 5. Furthermore, the fact that the extension 71 is located on the side of the slider 5 away from the insert 4 allows it to block the slider 5, further increasing the blocking effect of the fixing block 7 on the slider 5.
[0059] It should be noted that the fixing block 7 is L-shaped with a 90° rotation.
[0060] like Figure 7 As shown, a guide rail 52 is provided on the mating surface 51. The guide rail 52 protrudes from the mating surface 51 and extends along the inclined direction of the mating surface 51; Figure 8 As shown, the insert 4 has a groove 41 that mates with the guide rail 52. The guide rail 52 is located in the groove 41 to guide the insert 4 to move along the mating surface 51.
[0061] The guide rail 52 is T-shaped, and the groove 41 is also T-shaped. By designing the guide rail 52 and the groove 41 as T-shaped, the guide rail 52 and the groove 41 interfere with each other and constrain each other in a direction perpendicular to the mating surface 51, thereby preventing the guide rail 52 from separating from the insert 4 during the movement of the insert 4, and thus ensuring the stability and reliability of the movement of the insert 4.
[0062] The groove 41 is provided through the insert 4 along the extension direction of the guide rail 52, so that the guide rail 52 is located in the groove 41 through the end of the groove 41.
[0063] The guide post 8 is inclined from bottom to top towards the center of the slider 5, and the inclination direction of the guide post 8 is opposite to the inclination direction of the mating surface 51 in the vertical plane.
[0064] like Figure 7 As shown, the slider 5 has a through hole 53 through which the guide post 8 passes, and the guide post 8 passes through the through hole 53 to connect with the fixed block 7. By connecting the guide post 8 through the slider 5 to the fixed block 7, not only is the connection between the guide post 8 and the fixed block 7 convenient, but the overall structure can also be made compact, reducing the space occupied by the overall structure. In addition, the cooperation between the guide post 8 and the through hole 53 can, to a certain extent, ensure the straightness and accuracy of the slider 5's movement, reduce the swaying and deviation of the slider 5 during the movement, and improve the movement accuracy and working quality of the entire mechanism.
[0065] The working principle of the aforementioned downhill paddle steering mechanism is as follows: Figure 11As shown, when the insert 4 needs to be demolded, the guide post 8 drives the fixed block 7 to move upward, the fixed block 7 separates from the slider 5, the fixed block 7 releases its obstruction of the slider 5, the slider 5 moves horizontally away from the insert 4, the insert 4 slides downward along the mating surface 51 and moves horizontally synchronously with the slider 5, so the insert 4 tilts downward relative to the product 3 and thus disengages from the undercut structure 31.
[0066] When insert 4 is needed to create the undercut structure 31, guide post 8 drives fixed block 7 to move downward. Fixed block 7 and slider 5 come into contact with each other. Fixed block 7 applies force to slider 5 to prevent slider 5 from moving horizontally away from insert 4. Insert 4 moves horizontally synchronously with slider 5 and slides upward along mating surface 51. Therefore, insert 4 moves upward relative to product 3, so that the upper end of insert 4 comes into contact with product 3, thus creating the undercut structure 31.
[0067] Based on the aforementioned downsloping insert steering mechanism, this utility model also provides a mold for undercut demolding. The mold for undercut demolding includes an upper mold 1, a lower mold 2, an insert 4, and the aforementioned downsloping insert steering mechanism. The upper mold 1 defines a first forming part, which is located at the bottom of the upper mold 1. The lower mold 2 is vertically opposite to the upper mold 1. The lower mold 2 defines a second forming part, which is located at the top of the lower mold 2. The second forming part is vertically opposite to the first forming part. The insert 4 is connected to the lower mold 2 and is used to form the undercut structure 31 on the product 3. The first forming part, the second forming part, and the insert 4 together define the product 3. The downsloping insert steering mechanism is connected to the lower mold 2 and is used to separate the insert 4 from the undercut structure 31.
[0068] The lower mold 2 is connected to a connector 21, which moves synchronously with the lower mold 2. The connector 21 is connected to the insert 4 and can slide relative to the insert 4. When the slider 5 is fixed, the insert 4 is also fixed, and there is no relative movement between the connector 21 and the insert 4, thus fixing the insert 4 to the lower mold 2, thereby ensuring the stability and reliability of the product 3 during the injection molding process.
[0069] like Figure 8 As shown, the insert 4 has a protrusion 42, which is inclined from top to bottom towards the slider 5; as Figure 9 As shown, the connector 21 has a connecting portion 211, which cooperates with the protrusion 42 to limit the movement trajectory of the insert 4. Figure 10 As shown, when the slider 5 moves the insert 4, since the connector 21 is connected to the lower mold 2, the insert 4 and the connector 21 move relative to each other, which causes the protrusion 42 and the connector 211 to slide relative to each other, thereby allowing the connector 21 to guide the movement of the insert 4.
[0070] In some embodiments, two connectors 21 are provided, with the two connectors 21 correspondingly located on opposite sides of the insert 4 to ensure the reliability and stability of the movement of the insert 4.
[0071] like Figure 5 As shown, the lower mold 2 is connected to two pressure blocks 9. The two pressure blocks 9 are respectively located on both sides of the slider 5 extending along its sliding direction to limit the movement trajectory of the slider 5. By setting pressure blocks 9 on both sides of the slider 5 extending along its sliding direction, the two pressure blocks 9 cooperate with each other to prevent the slider 5 from sliding obliquely in a direction intersecting with the sliding direction of the slider 5.
[0072] like Figure 7 As shown, the slider 5 has a mating part 54, which is located on one side of the slider 5 extending along its sliding direction; the pressure block 9 has a limiting part, which cooperates with the mating part 54, and the limiting part is located above the mating part 54. When the slider 5 slides, since the pressure block 9 is connected to the lower mold 2, relative sliding will occur between the pressure block 9 and the slider 5.
[0073] The aforementioned mold with inverted demolding capability can produce product 3 with inverted structure 31. Product 3 is of good quality, easy to demold, simple and reliable in structure, and has high production efficiency.
[0074] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0075] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.
Claims
1. A downhill insert steering mechanism, applied in an injection mold, wherein the upper end of the insert is used to form an undercut structure; characterized in that, The steering mechanism includes: A slider has a mating surface formed on it, which is inclined from bottom to top towards the center of the slider; an insert is connected to the slider and can slide along the mating surface; the slider can slide in a horizontal direction. A fixing block, located above the slider, is used to prevent the slider from sliding horizontally away from the insert. A guide post, connected to the fixed block, is used to drive the fixed block to move; When the guide post moves the fixed block upward, the fixed block separates from the slider, the slider moves away from the insert, and the insert slides downward along the mating surface to separate the insert from the overlock structure.
2. The downhill insert steering mechanism as described in claim 1, characterized in that, The mating surface is provided with a guide rail, which protrudes from the mating surface and extends along the inclined direction of the mating surface; the insert is provided with a groove that mates with the guide rail, and the guide rail is disposed in the groove.
3. The downhill insert steering mechanism as described in claim 2, characterized in that, The guide rail is T-shaped, and the groove is also T-shaped, with the groove extending through the insert along the extension direction of the guide rail.
4. The downhill insert steering mechanism as described in claim 1, characterized in that, The guide post is inclined from bottom to top toward the center of the slider, and the inclination direction of the guide post is opposite to the inclination direction of the mating surface in the vertical plane.
5. The downhill insert steering mechanism as described in claim 1, characterized in that, The fixing block has an extension located on the side of the slider away from the insert.
6. The downhill insert steering mechanism as described in claim 1, characterized in that, The slider has a through hole through which the guide post passes, and the guide post passes through the through hole to connect with the fixing block.
7. The downhill insert steering mechanism as described in claim 1, characterized in that, A wear-resistant plate is installed at the bottom of the slider, and the wear-resistant plate moves synchronously with the slider.
8. A mold that can be inverted for demolding, characterized in that, Includes the downhill insert steering mechanism as described in any one of claims 1-7; the mold further includes: An upper mold, wherein a first forming portion is defined and the first forming portion is located at the bottom of the upper mold; The lower mold is vertically opposite to the upper mold; the lower mold defines a second forming part, the second forming part is located at the top of the lower mold, and the second forming part is vertically opposite to the first forming part; the lower mold is connected to the insert, and the first forming part, the second forming part and the insert together define and form a product.
9. The mold for inverted demolding as described in claim 8, characterized in that, The lower mold is connected to a connector, which moves synchronously with the lower mold; the connector is connected to the insert and can slide relative to the insert.
10. The mold for inverted demolding as described in claim 9, characterized in that, The insert has a protrusion that is inclined from top to bottom toward the slider. The connector has a connecting part that cooperates with the protrusion to limit the movement trajectory of the insert.