Injection mold

Abstract

The utility model relates to the technical field of mold manufacturing, in particular to an injection mold, an inclined guide pillar comprises a first rod body and a second rod body, the second rod body extends from a fixed mold plate to the outer side surface of a rear mold group, and the second rod body penetrates through a rear mold sliding block in a sliding manner; external threads are formed at the front end of the first rod body, a guide pillar seat is concavely arranged on the lower surface of the fixed mold plate, the front end of the first rod body penetrates through the fixed mold plate and reaches the guide pillar seat, and the second rod body extends into the guide pillar seat and is in threaded connection with the first rod body; the fixed mold plate is provided with a threaded inclined hole, the threaded inclined hole is communicated with the guide column base, and the first rod body is installed in the threaded inclined hole in a fastened mode. According to the injection mold, the split type inclined guide column design is adopted, the first rod body and the second rod body are independently manufactured, machining is easy, deformation is not prone to occurring, and the manufacturing cost is low; and the first rod body is directly fastened on the fixed mold plate, and then the second rod body is in threaded butt joint with the first rod body, so that the assembly is tight, breakage is not easy during injection molding, the production efficiency is improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mould manufacturing technical field, especially relate to a injection mold. BACKGROUND

[0002] Injection molding is also called injection molding, it is a kind of injection and molding forming method.The advantage of injection molding method is fast production speed, high efficiency, operation can realize automation, and the shape can be from simple to complex, size can be from big to small, and product size is accurate, product is easy to update, can form the workpiece of complex shape, injection molding is suitable for mass production and the forming processing field of complex shape product.

[0003] The key component of injection molding is injection mold, and the injection mold is usually composed of a front mold part and a rear mold part, and a product cavity is formed after the front and rear molds are combined, liquid plastic is injected into the cavity, and the corresponding product can be obtained after the mold is opened and demolded.When the product's external dimensions are large, a slide block and an inclined guide pillar are configured in the rear mold part, the inclined guide pillar extends obliquely through the fixed mold plate and the slide block and extends to the movable mold plate, and the inclined guide pillar can open the slide block when the mold is opened.In the prior art, the inclined guide pillar is usually processed into a cup head shape, but the cup head inclined guide pillar is too long, which is difficult to process, easy to deform and has high manufacturing cost;And in the injection production process, the cup head inclined guide pillar is not fixed, and there is a virtual position in assembly, so the inclined guide pillar is often broken, which increases the production cost and reduces the efficiency.

[0004] Therefore, the utility model provides an injection mold aiming at the above technical problems, adopts a split type inclined guide pillar design, the first rod body and the second rod body are independently manufactured, the first rod body is directly fastened on the fixed mold plate, and the second rod body is threadedly connected with the first rod body, the split type inclined guide pillar is simple to process, has low manufacturing cost, is tightly assembled and not easy to break, improves the production efficiency and reduces the production cost, and solves the above problems. SUMMARY

[0005] In view of the above problems existing in the prior art, the utility model provides an injection mold, which comprises:

[0006] A front mold group, a rear mold group, a split type inclined guide pillar and a rear mold slide block, the rear mold slide block is slidably opened and closed and is installed on the rear mold group, and the front mold group has a fixed mold plate;

[0007] The inclined guide pillar comprises a first rod body and a second rod body, the first rod body is obliquely fastened and installed on the fixed mold plate, the first rod body points to the outer side of the rear mold group, and the first rod body is threadedly connected with the end of the second rod body;

[0008] The second rod body extends from the fixed mold plate to the outer side of the rear mold group, and the second rod body slidably passes through the rear mold slide block;

[0009] The front end of the first rod body is formed with external threads, the lower surface of the fixed die plate is recessed with a guide post seat, the front end of the first rod body passes through the fixed die plate and reaches the guide post seat, and the second rod body extends into the guide post seat and is threadedly connected with the first rod body;

[0010] The fixed die plate is provided with a threaded inclined hole, the threaded inclined hole communicates with the guide post seat, and the first rod body is tightly installed in the threaded inclined hole;

[0011] The second rod body is formed as a column, and the rear die sliding block is provided with a guide post sliding groove, and the second rod body is slidably installed in the guide post sliding groove;

[0012] When the mold is opened, the front mold group moves away from the rear mold group, and the inclined guide post forces the rear die sliding block to expand and open.

[0013] Optionally, in some embodiments, the rear mold group comprises a movable die plate, the rear die sliding block comprises a first side sliding block and a second side sliding block, two first side sliding blocks and two second side sliding blocks are symmetrically installed on the upper surface of the movable die plate, the two first side sliding blocks are slidably advanced and retreated on the movable die plate, and the two second side sliding blocks are slidably advanced and retreated on the movable die plate.

[0014] Optionally, the fixed die plate is uniformly provided with a plurality of inclined guide posts, each first side sliding block is provided with at least two guide post sliding grooves, and each first side sliding block is cooperatively installed by at least two inclined guide posts.

[0015] Each second side sliding block is provided with at least two guide post sliding grooves, and each second side sliding block is cooperatively installed by at least two inclined guide posts.

[0016] Optionally, in some embodiments, the first side sliding block comprises a first sliding block seat, a first pressing block, a first guide block, a first limiting block and a first insert;

[0017] The first insert is tightly installed on the first sliding block seat, the first sliding block seat is pressed and installed on the movable die plate through two first pressing blocks, the first pressing block is tightly connected with the movable die plate, and the first sliding block seat is slidably advanced and retreated along the axis of the first pressing block;

[0018] The first guide block is tightly installed on the upper surface of the movable die plate, the bottom surface of the first sliding block seat is provided with a first guide groove, the first guide groove is adapted to the installation of the first guide block, and the first guide groove guides the sliding of the first sliding block seat on the movable die plate through the first guide block;

[0019] The first limiting block is fastened and installed at the axial outer end of the first pressing block, and the first limiting block limits the first sliding block seat from being separated from the movable die plate.

[0020] Optionally, the first side sliding block further comprises a first wear-resistant block, which is installed on the side surface of the first sliding block seat, and the first wear-resistant block is used for contacting and rubbing against the fixed die plate.

[0021] Optionally, the first side sliding block further comprises a first toggle and a first spring, the first toggle is arranged on the upper surface of the movable die plate, and the first spring is arranged on the side surface of the first limiting block, and the first toggle and the first spring keep the first sliding block seat stable.

[0022] Optionally, in some embodiments, the second side sliding block comprises a second sliding block seat, a second pressing block, a second guide block, a second guide groove, a second limiting block and a second insert;

[0023] The second insert is fastened and installed on the second sliding block seat, the second sliding block seat is pressed and installed on the movable die plate through two second pressing blocks, the second pressing block is fastened and connected with the movable die plate, and the second sliding block seat can slide along the axial direction of the second pressing block;

[0024] The second guide block is fastened and installed on the upper surface of the movable die plate, the bottom surface of the second sliding block seat is provided with a second guide groove, the second guide groove is adapted to the installation of the second guide block, and the second guide groove guides the second sliding block seat to slide on the movable die plate through the second guide block;

[0025] The second limiting block is fastened and installed on the side surface of the movable die plate, and the bottom surface of the second sliding block seat is further provided with a first limiting groove, and the second limiting block cooperates with the first limiting groove to limit the second sliding block seat from being separated from the movable die plate.

[0026] Optionally, the second side sliding block further comprises a second wear-resistant block, which is installed on the side surface of the second sliding block seat, and the second wear-resistant block is used for contacting and rubbing against the fixed die plate.

[0027] Optionally, the second side sliding block further comprises a second toggle and a second spring, the second toggle is arranged on the upper surface of the movable die plate, the second spring is arranged inside the rear side of the second sliding block seat and abuts against the rear die core, and the second toggle and the second spring keep the second sliding block seat stable.

[0028] Optionally, in some embodiments, the rear die sliding block further comprises a third side sliding block, which is installed on the upper surface of one of the second side sliding blocks.

[0029] The third side sliding block comprises a third sliding block base, a third insert, a third pressing block and a third limiting block, a first mounting base is arranged on the second sliding block base, the third insert is fastened and mounted on the third sliding block base, the third sliding block base is pressed and mounted on the first mounting base through the two third pressing blocks, the third pressing block is fastened and connected with the second sliding block base, the third sliding block base can slide along the axial direction of the third pressing block, the third limiting block is fastened and mounted on the first mounting base, the bottom surface of the third sliding block base is provided with a second limiting groove, and the third limiting block cooperates with the second limiting groove to limit the third sliding block base from being separated from the first mounting base.

[0030] The technical scheme of the utility model has the advantages or beneficial effects as follows:

[0031] The injection mold of the utility model discloses, the oblique guide pillar includes first rod body and second rod body, second rod body extends from the fixed mold plate to the outside of the rear mold module, and the second rod body can slide through the rear mold slider;The front end of the first rod body is formed with external thread, and the lower surface of the fixed mold plate is recessed with a guide pillar seat, the front end of the first rod body passes through the fixed mold plate and reaches the guide pillar seat, and the second rod body is screwed with the first rod body in the guide pillar seat;The fixed mold plate is provided with a threaded inclined hole, the threaded inclined hole is communicated with the guide pillar seat, and the first rod body is fastened and installed in the threaded inclined hole. BRIEF DESCRIPTION OF DRAWINGS

[0032] Reference is made to the accompanying drawings to more fully describe embodiments of the utility model. However, the accompanying drawings are only for illustration and elaboration, and do not constitute a limitation on the scope of the utility model.

[0033] Figure 1 It is a three-dimensional schematic view of the injection mold of the utility model;

[0034] Figure 2 It is an explosion schematic view of the injection mold of the utility model;

[0035] Figure 3 It is another explosion schematic view of the injection mold of the utility model;

[0036] Figure 4 It is a partial structure explosion schematic view of the injection mold of the utility model;

[0037] Figure 5 It is Figure 4 The enlarged schematic view of A part in the middle;

[0038] Figure 6isometric view of the first side slider;

[0039] Figure 7 isometric view of the second side slider;

[0040] Figure 8 isometric view of the third side slider;

[0041] Figure 9 exploded view of the second side slider and the third side slider.

[0042] illustration:

[0043] 1, front mold set; 2, rear mold set; 3, inclined guide pillar; 4, rear mold slider; 5, face plate; 6, hot runner plate; 7, fixed mold plate; 8, front mold core; 9, rear mold core; 10, movable mold plate; 11, square iron; 12, ejector plate; 13, bottom plate; 14, avoiding groove;

[0044] 15, first rod body; 16, second rod body; 17, guide pillar seat; 18, threaded inclined hole; 19, guide pillar sliding groove;

[0045] 20, first side slider; 21, first slider seat; 22, first pressing block; 23, first guide block; 24, first limiting block; 25, first insert; 26, first guide groove; 27, first wear-resistant block; 28, first old tiger buckle; 29, first spring; 30, first guide groove; 31, first stop needle;

[0046] 32, second side slider; 33, second slider seat; 34, second pressing block; 35, second guide block; 36, second guide groove; 37, second limiting block; 38, second insert; 39, first limiting groove; 40, second wear-resistant block; 41, second old tiger buckle; 42, second spring; 43, second guide groove; 44, second stop needle; 45, first blind hole; 46, stop block;

[0047] 47, third side slider; 48, third slider seat; 49, third insert; 50, third pressing block; 51, third limiting block; 52, first mounting seat; 53, third wear-resistant block; 54, first connecting block; 55, second inclined guide pillar; 56, mounting groove; 57, third spring; 58, limiting wave bead; 59, second blind hole; 60, wave bead seat; 61, second limiting groove. DETAILED DESCRIPTION

[0048] For the purpose of facilitating the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present application can be more thoroughly and completely understood.

[0049] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only.

[0050] In the description of the present application, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments of the present application and are not intended to limit the present application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0051] In the description of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0052] As Figures 1-9As shown, the injection mold of the utility model includes front mold group 1, rear mold group 2, split type inclined guide pillar 3 and rear mold slider 4, and the rear mold slider 4 is slidably installed in the rear mold group 2. Specifically, the front mold group 1 includes panel 5, hot runner plate 6, fixed mold plate 7 and front mold core 8, all of which are steel structures. The bottom surface of the fixed mold plate 7 is provided with a receiving cavity to accommodate the front mold core 8 fastened and installed, the upper surface of the fixed mold plate 7 is assembled with the hot runner plate 6, the upper surface of the hot runner plate 6 is assembled with the panel 5, and the front mold group 1 is provided with an injection runner (not shown) sequentially passing through the panel 5, the hot runner plate 6, the fixed mold plate 7 and the front mold core 8, and the injection runner is used for injection molding operation of the injection mold. The rear mold group 2 includes rear mold core 9, movable mold plate 10, square iron 11, ejector plate 12 and bottom plate 13, all of which are steel structures. Two square irons 11 are symmetrically fastened and installed on the upper surface of the bottom plate 13, and have a certain spacing between them. The ejector plate 12 is located on the upper surface of the bottom plate 13 and between the two square irons 11. The ejector plate 12 is usually connected to the movable mold plate 10 through the ejector pin, return pin and spring, and the ejector plate 12 can move relative to the bottom plate 13 to approach or move away from the movable mold plate 10. The rear mold core 9 is fastened and installed on the upper surface of the movable mold plate 10, the rear mold slider 4 is sideward slidably installed on the upper surface of the movable mold plate 10, and the rear mold slider 4 encloses the rear mold core 9. The upper end of the inclined guide pillar 3 is fastened and installed on the fixed mold plate 7, the lower end of the inclined guide pillar 3 points to the outer side of the movable mold plate 10, the inclined guide pillar 3 slidably passes through the rear mold slider 4, and the lower end of the inclined guide pillar 3 extends to the outer side of the movable mold plate 10. The rear mold slider 4 cooperates with the rear mold core 9 to form a product cavity with the front mold core 8, the injection runner communicates with the product cavity, and in the clamped state, the rear mold slider 4 is enclosed and clamped by the fixed mold plate 7. Preferably, the side surface of the movable mold plate 10 is provided with an avoiding groove 14, the avoiding groove 14 can accommodate the lower end of the inclined guide pillar 3, and the movement interference is avoided.

[0053] Further, in the embodiment, the inclined guide pillar 3 comprises a first rod 15 and a second rod 16, the first rod 15 is fixedly installed on the clamping plate 7 in an inclined manner, the first rod 15 points to the outer side of the rear mold set 2, and the end of the first rod 15 is threadedly connected with the end of the second rod 16. Specifically, the first rod 15 is formed in a bolt shape, and the second rod 16 is formed in a column shape; the second rod 16 extends from the clamping plate 7 to the outer side of the rear mold set 2 and slidably passes through the rear mold slider 4. The front end of the first rod 15 is externally threaded, the lower surface of the clamping plate 7 is recessed with a guide pillar seat 17, the front end of the first rod 15 passes through the clamping plate 7 and reaches the guide pillar seat 17, and the second rod 16 extends into the guide pillar seat 17 and is threadedly connected with the first rod 15. The clamping plate 7 is provided with a threaded inclined hole 18, the threaded inclined hole 18 is communicated with the guide pillar seat 17, and the first rod 15 is fixedly installed in the threaded inclined hole 18. The rear mold slider 4 is provided with a guide pillar sliding groove 19, the second rod 16 is slidably installed in the guide pillar sliding groove 19, the guide pillar sliding groove 19 is sized and shaped to be closely fitted with the second rod 16 without leaving a fitting virtual position, thereby preventing the second rod 16 from swinging in the guide pillar sliding groove 19 when the mold is opened. When the mold is opened, the front mold set 1 moves away from the rear mold set 2, and the inclined guide pillar 3 forces the rear mold slider 4 to expand and open. Preferably, the first rod 15 can be directly selected from high-strength bolt standard parts, and the second rod 16 can be a rectangular column or a cylindrical column, and the upper end of the second rod 16 is internally threaded. In particular, in order to ensure the working strength of the second rod 16 when the mold is opened, the upper end of the second rod 16 extends into the middle or above of the clamping plate 7, that is, the depth of the guide pillar seat 17 is not less than half the thickness of the clamping plate 7. In this way, the upper end of the second rod 16 closely fitted in the guide pillar seat 17 is embedded in the clamping plate 7 with a length long enough, thereby ensuring that the second rod 16 is not easy to be bent and deformed under the action of transverse stress when the mold is opened, and the production efficiency can be effectively improved.

[0054] Further, in the embodiment, the rear mold slider 4 comprises a first side slider 20 and a second side slider 32, the two first side sliders 20 and the two second side sliders 32 are symmetrically installed on the upper surface of the movable plate 10, the two first side sliders 20 are slidably advanced and retreated on the movable plate 10, and the two second side sliders 32 are slidably advanced and retreated on the movable plate 10. It should be noted that the first side slider 20 and the second side slider 32 can be the same or different; and the two symmetrically installed first side sliders 20 can also be adjusted to be not completely the same, and the two symmetrically installed second side sliders 32 can also be adjusted to be not completely the same.

[0055] Further, in the embodiment, the clamping plate 7 is uniformly provided with a plurality of inclined guide pillars 3, each first side slider 20 is provided with at least two guide pillar sliding grooves 19, and each first side slider 20 is cooperatively installed by at least two inclined guide pillars 3. Each second side slider 32 is provided with at least two guide pillar sliding grooves 19, and each second side slider 32 is cooperatively installed by at least two inclined guide pillars 3.

[0056] Further, in the embodiment, the first side slider 20 comprises a first slider base 21, a first pressing block 22, a first guide block 23, a first limiting block 24 and a first insert 25. The first insert 25 is fastened and installed on the rear side of the first slider base 21, the first slider base 21 is pressed and installed on the movable die plate 10 through the two first pressing blocks 22, the first pressing block 22 is fastened and connected with the movable die plate 10 through a screw, and the first slider base 21 can slide along the axial direction of the first pressing block 22. Alternatively, the first insert 25 can be integrally formed with the first slider base 21, one side surface of the first slider base 21 is formed as an inclined surface, and the inclined surface of the first slider base 21 cooperates with the inclined surface on the lower side of the fixed die plate 7, which is beneficial to the pressing of the first side slider 20 by the fixed die plate 7 during the clamping. The first guide block 23 is fastened and installed on the upper surface of the movable die plate 10, the bottom surface of the first slider base 21 is provided with a first guide groove 26, the first guide groove 26 is adapted to the installation of the first guide block 23, the first guide groove 26 guides the sliding of the first slider base 21 on the movable die plate 10 through the first guide block 23, and the first guide groove 26 and the first guide block 23 can balance the retreat of the first slider base 21 during the opening of the mold. The first limiting block 24 is fastened and installed on the axial outer end of the first pressing block 22, and the first limiting block 24 limits the disengagement of the first slider base 21 from the movable die plate 10. Preferably, the first limiting block 24 can be directly fastened and installed on the side surface of the movable die plate 10, and the first limiting block 24 is opposite to the outer end surface of the first slider base 21.

[0057] Further, in the embodiment, the first side slider 20 further comprises a first wear-resistant block 27, which is fastened and installed on the side surface of the first slider base 21, i.e. the first wear-resistant block 27 is fastened and installed on the inclined surface of the first slider base 21, and the first wear-resistant block 27 is used to contact and rub with the fixed die plate 7. Preferably, the inclined surface on the fixed die plate 7 which contacts with the first wear-resistant block 27 can also be provided with a wear-resistant block, and the flat surface of the first slider base 21 which slides with the movable die plate 10 can also be provided with a corresponding wear-resistant block, so as to prolong the service life of the mold and reduce the production cost. It should be noted that the wear-resistant blocks of the utility model are all made of wear-resistant steel.

[0058] Further, in the present embodiment, the first side slider 20 further comprises a first clasp 28 and a first spring 29, the first clasp 28 is arranged on the upper surface of the movable die plate 10, and the first spring 29 is arranged on the side surface of the first limiting block 24, the first clasp 28 and the first spring 29 keep the first slider seat 21 stable. Specifically, the upper surface of the movable die plate 10 is provided with a first guide slot 30, and the opening of the first clasp 28 is arranged corresponding to the first guide slot 30; the first slider seat 21 is provided with a first stop pin 31, and the front end of the first stop pin 31 penetrates through the first slider seat 21 and extends into the first guide slot 30. When the mold is opened, the first slider seat 21 drives the first stop pin 31 to move along the first guide slot 30 and buckle into the first clasp 28, the first clasp 28 limits the movement of the first side slider 20 through the first stop pin 31, thereby stabilizing the first side slider 20 and preventing the first side slider 20 from moving forward. When the mold is closed, under the pressure of the fixed die plate 7, the inclined surface of the first slider seat 21 is subjected to the clamping force, the first stop pin 31 is pulled out of the first clasp 28, and then the mold can be successfully closed. The first spring 29 is installed on the outer side surface of the first limiting block 24 through a bolt, the bolt penetrates through the first limiting block 24 and is threadedly connected to the first slider seat 21, the first spring 29 provides a pulling force for the first side slider 20 to keep the first side slider 20 stable and prevent the first side slider 20 from moving forward. The first spring 29 is pre-compressed and assembled on the bolt, the tension of the first spring 29 is converted into the pulling force of the first side slider 20 through the bolt, and the tension of the first spring 29 helps the first side slider 20 to slide outward when the mold is opened, reduces the stress of the second rod body 16, and prevents the corresponding second rod body 16 of the first side slider 20 from deforming or breaking. It should be noted that the first clasp 28 can be arranged on the first side slider 20 without the first spring 29, and both of them are arranged to keep the first side slider 20 more stable, especially when the mass of the first side slider 20 is larger, both of them are usually arranged to play a double stabilizing role.

[0059] Further, in the embodiment, the second side slider 32 comprises a second slider base 33, a second pressing block 34, a second guide block 35, a second guide groove 36, a second limiting block 37 and a second wear-resistant block 38. The second wear-resistant block 38 is fastened and installed on the rear side of the second slider base 33, the second slider base 33 is pressed and installed on the movable die plate 10 through the two second pressing blocks 34, the second pressing blocks 34 are fastened and connected with the movable die plate 10 through screws, and the second slider base 33 can slide along the axial direction of the second pressing block 34. Alternatively, the second wear-resistant block 38 can be integrally formed with the second slider base 33, one side surface of the second slider base 33 is formed as an inclined surface, and the inclined surface of the second slider base 33 cooperates with the inclined surface on the lower side of the fixed die plate 7, which is beneficial to the pressing of the second side slider 32 by the fixed die plate 7 during the clamping. The second guide block 35 is fastened and installed on the upper surface of the movable die plate 10, the second guide groove 36 is arranged on the bottom surface of the second slider base 33, the second guide groove 36 is adapted to the installation of the second guide block 35, the second guide groove 36 guides the sliding of the second slider base 33 on the movable die plate 10 through the second guide block 35, and the second guide groove 36 and the second guide block 35 can balance the retreat of the second slider base 33 during the opening of the mold. The second limiting block 37 is fastened and installed on the side surface of the movable die plate 10, and the bottom surface of the second slider base 33 is further provided with a first limiting groove 39, and the second limiting block 37 cooperates with the first limiting groove 39 to limit the disengagement of the second slider base 33 from the movable die plate 10.

[0060] Further, in the embodiment, the second side slider 32 further comprises a second wear-resistant block 40, which is fastened and installed on the side surface of the second slider base 33, i.e. the second wear-resistant block 40 is fastened and installed on the inclined surface of the second slider base 33, and the second wear-resistant block 40 is used to contact and rub with the fixed die plate 7. Preferably, the inclined surface on the fixed die plate 7 which contacts the second wear-resistant block 40 can also be provided with a wear-resistant block, and the flat surface of the second slider base 33 which slides with the movable die plate 10 can also be provided with a corresponding wear-resistant block, so as to prolong the service life of the mold and reduce the production cost.

[0061] Further, in the present embodiment, the second side slider 32 further comprises a second toggle 41 and a second spring 42, the second toggle 41 is arranged on the upper surface of the movable die plate 10, and the second spring 42 is arranged inside the rear side of the second slider seat 33 and abuts against the rear die core 9, the second toggle 41 and the second spring 42 keep the second slider seat 33 stable. Specifically, the upper surface of the movable die plate 10 is provided with a second guide slot 43, and the opening of the second toggle 41 is arranged corresponding to the second guide slot 43; the second slider seat 33 is provided with a second stop pin 44, the front end of the second stop pin 44 penetrates through the second slider seat 33 and extends into the second guide slot 43. When the mold is opened, the second slider seat 33 drives the second stop pin 44 to move along the second guide slot 43 and buckle into the second toggle 41, the second toggle 41 limits the movement of the second side slider 32 through the second stop pin 44, thereby stabilizing the second side slider 32 and preventing the second side slider 32 from moving forward. When the mold is closed, under the pressure of the fixed die plate 7, the inclined surface of the second slider seat 33 is subjected to the clamping force, the second stop pin 44 is pulled out of the second toggle 41, and then the mold can be successfully closed. The rear side of the second slider seat 33 is provided with a plurality of first blind holes 45, and the second spring 42 is respectively installed in the first blind holes 45, the front end of the second spring 42 abuts against the rear die core 9, the second spring 42 provides tension to the second side slider 32 to keep the second side slider 32 stable and prevent the second side slider 32 from moving forward. The second spring 42 is pre-compressed and assembled in the first blind hole 45, and the tension of the second spring 42 helps the second side slider 32 slide outward when the mold is opened, reduces the stress of the second rod body 16, and prevents the corresponding second rod body 16 from deforming or breaking. Optionally, the second side slider 32 can be provided with a stop block 46, which is tightly installed on the upper surface of the movable die plate 10 or one side surface of the rear die core 9, and the stop block 46 is located directly below the second insert 38 when the mold is closed, and the stop block 46 is used to abut against the front end of the second spring 42. It should be noted that the second side slider 32 can also be provided with only the second toggle 41 without the second spring 42, and both of them are provided to stabilize the second side slider 32 more reliably, especially when the mass of the second side slider 32 is larger, both of them are usually provided to play a double stabilizing role.

[0062] Further, in the embodiment, the rear mold slide block 4 further comprises a third side slide block 47, which is installed on the upper side of one of the second side slide blocks 32. The third side slide block 47 comprises a third slide block base 48, a third insert 49, a third pressing block 50 and a third limiting block 51. The second slide block base 33 is provided with a first mounting base 52, and the third insert 49 is fixedly installed on the rear side of the third slide block base 48 and slidably penetrates the rear mold core 9. The third insert 49 is designed according to the shape of the injection product. The third slide block base 48 is press-fitted on the first mounting base 52 through two third pressing blocks 50, and the third pressing blocks 50 are fixedly connected to the second slide block base 33 by screws. The third slide block base 48 is slidable along the axial direction of the third pressing blocks 50. The first mounting base 52 is fixedly installed with the third limiting block 51. The bottom surface of the third slide block base 48 is provided with a second limiting groove 61, and the third limiting block 51 cooperates with the second limiting groove 61 to limit the third slide block base 48 from being separated from the first mounting base 52. The third limiting block 51 is a limiting screw. Optionally, one side surface of the third slide block base 48 is formed as an inclined surface, which cooperates with the inclined surface on the lower side of the fixed mold plate 7 to facilitate the pressing of the third side slide block 47 by the fixed mold plate 7 during mold clamping. The inclined surface of the third slide block base 48 is further provided with a third wear-resistant block 53, which is used to contact and rub against the fixed mold plate 7. Preferably, the inclined surface of the fixed mold plate 7 that contacts the third wear-resistant block 53 can also be provided with a wear-resistant block, and the flat surface of the third slide block base 48 that slidably contacts the second slide block base 33 can also be provided with a corresponding wear-resistant block. In this way, the service life of the mold can be prolonged, and the production cost can be reduced.

[0063] Further, in the embodiment, in order to realize the sliding of the third side slide block 47 on the first mounting base 52, the third side slide block 47 is further provided with a first connecting block 54 and a second inclined guide pillar 55. The first connecting block 54 is fixedly installed in a mounting groove 56 on the lower side of the fixed mold plate 7, and the second inclined guide pillar 55 penetrates the first connecting block 54 obliquely and is slidably connected to the third slide block base 48. During mold opening, the second inclined guide pillar 55 is opened under the action of the first connecting block 54 to open the third slide block base 48, thereby realizing the outward sliding of the third side slide block 47 during mold opening.

[0064] Further, in order to stabilize the third side slider 47, the third side slider 47 is further provided with a third spring 57 and a limiting wave bead 58. Specifically, the rear side of the third slider seat 48 is provided with a plurality of second blind holes 59, the third spring 57 is installed in the second blind hole 59 and abuts against the rear mold core 9, the third spring 57 provides tension for the third slider seat 48 to keep the third slider seat 48 stable, thereby stabilizing the third side slider 47 and preventing the third side slider 47 from moving forward. The third spring 57 is pre-compressed in the second blind hole 59, and the tension of the third spring 57 helps the third side slider 47 slide outward when the mold is opened, reduces the stress of the second inclined guide pillar 55, and prevents the second inclined guide pillar 55 from deforming or breaking. The limiting wave bead 58 is elastically installed on the bottom surface of the third slider seat 48, and the upper surface of the first mounting seat 52 is provided with a wave bead seat 60. When the mold is opened, the limiting wave bead 58 and the wave bead seat 60 are engaged to limit the movement of the third slider seat 48, thereby preventing the third side slider 47 from moving forward. When the mold is closed, under the pressure of the fixed mold plate 7, the inclined surface of the third slider seat 48 is subjected to a closing force, the limiting wave bead 58 is out of the wave bead seat 60, and then the mold can be smoothly closed.

[0065] The injection mold of the utility model adopts the design of split inclined guide pillar 3, the first rod body 15 and the second rod body 16 are independently manufactured, simple to process and not easy to deform, and the manufacturing cost is lower, the first rod body 15 is directly fastened on the fixed mold plate 7, and the second rod body 16 is in threaded butt joint with the first rod body 15, so that the assembly is compact, the first rod body 15 is not easy to break during injection molding, and the production efficiency is improved and the production cost is reduced.

[0066] When the injection mold of the utility model is implemented, the front mold group 1 approaches the rear mold group 2, the fixed mold plate 7 presses the rear mold slider 4, injection molding is completed through the injection flow channel. When the mold is opened, the front mold group 1 moves away from the rear mold group 2, the fixed mold plate 7 drives the second rod body 16 and the second inclined guide pillar 55 to move upward, the second inclined guide pillar 55 drives the third side slider 47 to slide outward by at least 8mm and stop sliding on the third limiting block 51, the corresponding second rod body 16 on the first side slider 20 drives the first side slider 20 to slide outward by at least 45mm and stop sliding on the first limiting block 24, the corresponding second rod body 16 on the second side slider 32 drives the second side slider 32 to slide outward by at least 35mm and stop sliding on the second limiting block 37, and the mold opening is completed. Finally, the ejector plate 12 drives the ejector pin to move upward to complete the demolding action, the ejector plate 12 and the ejector pin are reset under the action of the reset spring, and then the next mold closing can be recycled.

[0067] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present disclosure.

[0068] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but cannot be understood as a limitation on the patent application scope. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. Injection mold, characterized in that The application relates to a mold assembly, which comprises a front mold module, a rear mold module, split inclined guide columns and a rear mold sliding block. The inclined guide column comprises a first rod body and a second rod body, the first rod body is fixedly installed on the fixed mold plate in an inclined manner, the first rod body points to the outer side of the rear mold module, the end of the first rod body is threadedly connected with the end of the second rod body. The second rod body extends from the fixed mold plate to the outer side of the rear mold module, and the second rod body slidably penetrates through the rear mold sliding block. The front end of the first rod body is provided with external threads, the lower surface of the fixed mold plate is recessed with a guide column seat, the front end of the first rod body penetrates through the fixed mold plate and reaches the guide column seat, and the second rod body is threadedly connected with the first rod body by extending into the guide column seat. The fixed mold plate is provided with a threaded inclined hole, the threaded inclined hole is communicated with the guide column seat, and the first rod body is fixedly installed in the threaded inclined hole. The second rod body is formed as a column body, the rear mold sliding block is provided with a guide column sliding groove, and the second rod body is slidably installed in the guide column sliding groove. When the mold is opened, the front mold module is separated from the rear mold module, and the inclined guide column forces the rear mold sliding block to expand and open. The rear mold module comprises a movable mold plate, the rear mold sliding block comprises first side sliding blocks and second side sliding blocks, two first side sliding blocks and two second side sliding blocks are symmetrically installed on the upper surface of the movable mold plate, the two first side sliding blocks can slide on the movable mold plate in the same direction, and the two second side sliding blocks can slide on the movable mold plate in the same direction.

2. The injection mold of claim 1, wherein The fixed mold plate is uniformly provided with a plurality of inclined guide columns, each first side sliding block is provided with at least two guide column sliding grooves, and each first side sliding block is cooperatively installed by at least two inclined guide columns.

3. The injection mold of claim 2, wherein, Each second side sliding block is provided with at least two guide column sliding grooves, and each second side sliding block is cooperatively installed by at least two inclined guide columns. The first side sliding block comprises a first sliding block seat, a first pressing block, a first guide block, a first limiting block and a first insert piece.

4. The injection mold of claim 3, wherein The first insert piece is fixedly installed on the first sliding block seat, the first sliding block seat is press-fitted on the movable mold plate through the two first pressing blocks, the first pressing block is fixedly connected with the movable mold plate, and the first sliding block seat can slide along the axial direction of the first pressing block. The first guide block is fixedly installed on the upper surface of the movable mold plate, the bottom surface of the first sliding block seat is provided with a first guide groove, the first guide groove is adapted to the first guide block, and the first guide groove guides the first sliding block seat to slide on the movable mold plate through the first guide block. The first limiting block is fixedly installed on the axial outer end of the first pressing block, and the first limiting block limits the first sliding block seat from being separated from the movable mold plate. The first side sliding block further comprises a first wear-resistant block, the first wear-resistant block is installed on the side surface of the first sliding block seat, and the first wear-resistant block is used for contacting and rubbing the fixed mold plate.

5. The injection mold of claim 4, wherein, ​ 6. The injection mold of claim 5, wherein, The first side slider further comprises a first carabiner and a first spring, the first carabiner is arranged on the upper surface of the movable die plate, and the first spring is arranged on the side surface of the first limiting block, the first carabiner and the first spring keep the first slider stable.

7. The injection mold of claim 3, wherein The second side slider comprises a second slider, a second pressing block, a second guide block, a second guide groove, a second limiting block and a second insert; The second insert is tightly installed on the second slider, the second slider is pressed on the movable die plate through two second pressing blocks, the second pressing block is tightly connected with the movable die plate, and the second slider can slide along the axial direction of the second pressing block; The second guide block is tightly installed on the upper surface of the movable die plate, the bottom surface of the second slider is provided with a second guide groove, the second guide groove is matched with the second guide block for installation, and the second guide groove guides the second slider to slide on the movable die plate through the second guide block; The second limiting block is tightly installed on the side surface of the movable die plate, and the bottom surface of the second slider is further provided with a first limiting groove, the second limiting block cooperates with the first limiting groove to limit the second slider from being separated from the movable die plate.

8. The injection mold of claim 7, wherein, The second side slider further comprises a second wear-resistant block, the second wear-resistant block is installed on the side surface of the second slider, and the second wear-resistant block is used to contact and rub against the fixed die plate.

9. The injection mold of claim 8, wherein, The second side slider further comprises a second carabiner and a second spring, the second carabiner is arranged on the upper surface of the movable die plate, the second spring is arranged inside the rear side of the second slider and abuts against the rear die core, and the second carabiner and the second spring keep the second slider stable.

10. The injection mold of claim 7, wherein, The rear die slider further comprises a third side slider, the third side slider is installed on the upper surface of one of the second side sliders; The third side slider comprises a third slider, a third insert, a third pressing block and a third limiting block, the second slider is provided with a first mounting seat, the third insert is tightly installed on the third slider, the third slider is pressed on the first mounting seat through two third pressing blocks, the third pressing block is fixedly connected with the second slider, the third slider can slide along the axial direction of the third pressing block, the third limiting block is tightly installed on the first mounting seat, the bottom surface of the third slider is provided with a second limiting groove, and the third limiting block cooperates with the second limiting groove to limit the third slider from being separated from the first mounting seat.

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