Injection mold

Abstract

The invention 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 face of a rear mold set, and the second rod body slidably penetrates through a rear mold sliding block; 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 invention belongs to the technical field of mold manufacturing, and in particular relates to an injection mold. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding are fast production speed, high efficiency, automated operation, a wide variety of colors, shapes from simple to complex, sizes from large to small, and precise product size. The product is easy to update and can be made into complex-shaped parts. Injection molding is suitable for mass production and complex-shaped products and other molding and processing fields.

[0003] The key component of injection molding is the injection mold. The injection mold is usually composed of a front mold part and a back mold part. After the front and back molds are combined, a product cavity will be formed. Liquid plastic is injected into the cavity and hardened. After the mold is opened and demolded, the corresponding product can be obtained. When the product's external dimensions are large, a slider and an inclined guide column are also configured in the back mold part. The inclined guide column obliquely passes through the fixed mold plate and the slider and extends to the movable mold plate. When the mold is opened, the inclined guide column can open the slider. In the prior art, the inclined guide column is usually processed into a cup head shape, but because the cup head inclined guide column is too long, it is difficult to process and easy to deform, and the manufacturing cost is high; and in the injection molding production process, because the cup head inclined guide column is not fixed and is equipped with a virtual position, the inclined guide column often breaks, resulting in increased production costs and reduced efficiency.

[0004] Therefore, in response to the above-mentioned technical problems, the present invention provides an injection mold, which adopts a split-type inclined guide column design. The first rod body and the second rod body are manufactured independently, the first rod body is directly fastened to the fixed template, and the second rod body is then threadedly connected to the first rod body. This split-type inclined guide column is simple to process, has low manufacturing cost, is tightly assembled and not easy to break, thereby improving production efficiency and reducing production costs, and solving the above-mentioned problems. Summary of the invention

[0005] In view of the above problems existing in the prior art, the present invention provides an injection mold, comprising:

[0006] A front mold group, a rear mold group, a split oblique guide column and a rear mold slider, wherein the rear mold slider is slidably mounted on the rear mold group, and the front mold group has a fixed mold plate;

[0007] The oblique guide column 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 assembly, and the ends of the first rod body and the second rod body are threadedly connected;

[0008] The second rod body extends from the fixed mold plate toward the outer side of the rear mold assembly, and the second rod body can slidably pass through the rear mold slider;

[0009] The front end of the first rod body is formed with an external thread, the lower surface of the fixed template is concavely provided with a guide column seat, the front end of the first rod body passes through the fixed template and reaches the guide column seat, and the second rod body extends into the guide column seat and is threadedly connected with the first rod body;

[0010] The fixed template is provided with a threaded oblique hole, the threaded oblique hole is connected to the guide column seat, and the first rod body is fastened and installed in the threaded oblique hole;

[0011] The second rod body is formed as a column, the rear mold slider is provided with a guide column slide groove, and the second rod body is slidably mounted in the guide column slide groove;

[0012] When the mold is opened, the front mold group leaves the rear mold group, and the inclined guide column forces the rear mold slider to expand and open.

[0013] Optionally, in some embodiments, the rear mold assembly includes a movable mold plate, and the rear mold slider includes a first side slider and a second side slider, and the two first side sliders and the two second side sliders are symmetrically installed on the upper surface of the movable mold plate, respectively, and the two first side sliders can slide forward and backward together on the movable mold plate, and the two second side sliders can slide forward and backward together on the movable mold plate.

[0014] Optionally, a plurality of the inclined guide pillars are evenly distributed on the fixed template, each of the first side sliders is provided with at least two guide pillar slots, and each of the first side sliders is mounted in cooperation with at least two of the inclined guide pillars;

[0015] Each of the second side sliders is provided with at least two of the guide post sliding grooves, and each of the second side sliders is mounted in cooperation with at least two of the inclined guide posts.

[0016] Optionally, in some embodiments, the first side slider includes a first slider seat, a first pressing block, a first guide block, a first limit block and a first insert;

[0017] The first insert is fixedly mounted on the first slider seat, the first slider seat is pressed onto the movable platen through two first pressing blocks, the first pressing block is fixedly connected to the movable platen, and the first slider seat can slide along the axial direction of the first pressing block;

[0018] The first guide block is fastened to the upper surface of the movable platen, and the bottom surface of the first slider seat is provided with a first guide groove, the first guide groove is adapted to be installed on the first guide block, and the first guide groove guides the first slider seat to slide on the movable platen through the first guide block;

[0019] The first limit block is fixedly mounted on the axial outer end of the first pressing block, and the first limit block limits the first sliding block seat from being separated from the movable template.

[0020] Optionally, the first side slider further includes a first wear-resistant block, which is mounted on a side surface of the first slider seat and is used for contacting and rubbing with the fixed template.

[0021] Optionally, the first side slider further comprises a first tiger buckle and a first spring, wherein the first tiger buckle is arranged on the upper surface of the movable template, and the first spring is arranged on the side of the first limit block, and the first tiger buckle and the first spring keep the first slider seat stable.

[0022] Optionally, in some embodiments, the second side slider includes a second slider seat, a second pressing block, a second guide block, a second guide groove, a second limit block and a second insert;

[0023] The second insert is fixedly mounted on the second slider seat, the second slider seat is pressed onto the movable platen through two second pressing blocks, the second pressing blocks are fixedly connected to the movable platen, and the second slider seat can slide along the axial direction of the second pressing blocks;

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

[0025] The second limit block is fastened to the side of the movable template, and the bottom surface of the second sliding seat is also provided with a first limit groove. The second limit block cooperates with the first limit groove to limit the second sliding block seat from leaving the movable template.

[0026] Optionally, the second side slider further includes a second wear-resistant block, the second wear-resistant block is mounted on a side surface of the second slider seat, and the second wear-resistant block is used for contacting and rubbing with the fixed template.

[0027] Optionally, the second side slider further includes a second tiger buckle and a second spring, the second tiger buckle is arranged on the upper surface of the movable mold plate, the second spring is arranged inside the rear side of the second slider seat and abuts against the rear mold core, and the second tiger buckle and the second spring keep the second slider seat stable.

[0028] Optionally, in some embodiments, the rear mold slider further includes a third side slider, and the third side slider is installed on one of the second side sliders;

[0029] The third side slider includes a third slider seat, a third insert, a third pressure block and a third limit block. The second slider seat is provided with a first mounting seat. The third insert is fastened to the third slider seat. The third slider seat is pressed onto the first mounting seat through two third pressure blocks. The third pressure block is fastened to the second slider seat. The third slider seat can slide along the axial direction of the third pressure block. The third limit block is fastened to the first mounting seat. The bottom surface of the third slider seat is provided with a second limit groove. The third limit block cooperates with the second limit groove to limit the third slider seat from separating from the first mounting seat.

[0030] The technical solution of the present invention has the following advantages or beneficial effects:

[0031] The injection mold provided by the present invention comprises a first rod body and a second rod body, the second rod body extends from the fixed mold plate to the outer side surface of the rear mold group, and the second rod body can slide through the rear mold slider; the front end of the first rod body is formed with an external thread, and the lower surface of the fixed mold plate is recessed with a guide column seat, the front end of the first rod body passes through the fixed mold plate and reaches the guide column seat, and the second rod body extends into the guide column seat and is threadedly connected to the first rod body; the fixed mold plate is provided with a threaded oblique hole, the threaded oblique hole is connected to the guide column seat, and the first rod body is fastened and installed in the threaded oblique hole. The injection mold of the present invention adopts a split-type oblique guide column design, the first rod body and the second rod body are manufactured independently, the processing is simple and not easy to deform, and the manufacturing cost is low; the first rod body is directly fastened to the fixed mold plate, and the second rod body is then threadedly connected to the first rod body, the assembly is tight, and it is not easy to break during injection molding, which improves production efficiency and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The embodiments of the present invention will be described more fully with reference to the attached drawings, which are provided for illustration and description only and are not intended to limit the scope of the present invention.

[0033] Figure 1 is a three-dimensional schematic diagram of the injection mold of the present invention;

[0034] Figure 2 It is an exploded schematic diagram of the injection mold of the present invention;

[0035] Figure 3 Another exploded schematic diagram of the injection mold of the present invention;

[0036] Figure 4 It is a schematic exploded view of a local structure of the injection mold of the present invention;

[0037] Figure 5 for Figure 4 The enlarged schematic diagram of the middle A part;

[0038] Figure 6 is an exploded schematic diagram including a first side slider;

[0039] Figure 7 is an exploded schematic diagram including a second side slider;

[0040] Figure 8 It is an exploded schematic diagram including a third side slider;

[0041] Fig. 9 It is an exploded schematic diagram of the second side slider and the third side slider.

[0042] Illustration Description:

[0043] 1. Front mold assembly; 2. Rear mold assembly; 3. Inclined guide pillar; 4. Rear mold slider; 5. Panel; 6. Hot runner plate; 7. Fixed mold plate; 8. Front mold core; 9. Rear mold core; 10. Moving mold plate; 11. Square iron; 12. Ejector plate; 13. Bottom plate; 14. Avoidance groove;

[0044] 15. first rod body; 16. second rod body; 17. guide column seat; 18. threaded oblique hole; 19. guide column slide groove;

[0045] 20. First side slider; 21. First slider seat; 22. First pressure block; 23. First guide block; 24. First stop block; 25. First insert; 26. First guide groove; 27. First wear-resistant block; 28. First tiger buckle; 29. ​​First spring; 30. First guide groove; 31. First stop pin;

[0046] 32. Second side slider; 33. Second slider seat; 34. Second pressure block; 35. Second guide block; 36. Second guide groove; 37. Second limit block; 38. Second insert; 39. First limit groove; 40. Second wear block; 41. Second tiger buckle; 42. Second spring; 43. Second guide groove; 44. Second stop pin; 45. First blind hole; 46. Stop block;

[0047] 47. The third side slider; 48. The third slider seat; 49. The third insert; 50. The third pressure block; 51. The third limit block; 52. The first mounting seat; 53. The third wear-resistant block; 54. The first connecting block; 55. The second inclined guide column; 56. The mounting groove; 57. The third spring; 58. The limit ball; 59. The second blind hole; 60. The ball seat; 61. The second limit groove. DETAILED DESCRIPTION

[0048] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0049] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

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

[0051] In the description of the present invention, 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 "multiple" is more than two, unless otherwise clearly and specifically defined.

[0052] like Figure 1-9As shown, the injection mold of the present invention comprises a front mold group 1, a rear mold group 2, a split inclined guide column 3 and a rear mold slider 4, and the rear mold slider 4 is slidably installed on the rear mold group 2. Specifically, the front mold group 1 comprises a panel 5, a hot runner plate 6, a fixed mold plate 7 and a 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 for fastening and installation. The hot runner plate 6 is assembled on the top of the fixed mold plate 7, and the panel 5 is assembled on the top of the hot runner plate 6. The front mold group 1 is provided with an injection runner (not shown) that passes through the panel 5, the hot runner plate 6, the fixed mold plate 7 and the front mold core 8 in sequence. The injection runner is used for the injection mold to perform injection molding operations. The rear mold assembly 2 includes a rear mold core 9, a movable mold plate 10, a square iron 11, an ejector plate 12 and a bottom plate 13, all of which are steel structures. Two square irons 11 are symmetrically fastened and installed on the top of the bottom plate 13, and there is a certain distance between the two square irons 11. The ejector plate 12 is located on 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 an ejector, a return needle and a 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 on the top of the movable mold plate 10, and the rear mold slider 4 can be slidably installed on the upper surface of the movable mold plate 10 laterally, and the rear mold slider 4 surrounds the rear mold core 9. The upper end of the inclined guide column 3 is fastened on the fixed mold plate 7, and the lower end of the inclined guide column 3 points to the outside of the movable mold plate 10. The inclined guide column 3 can slide through the rear mold slider 4, and the lower end of the inclined guide column 3 extends to the outside of the movable mold plate 10. The rear mold slider 4 and the rear mold core 9 cooperate with the front mold core 8 to form a product cavity, and the injection runner is connected to the product cavity. In the mold closing state, the rear mold slider 4 is surrounded and clamped by the fixed mold plate 7. Preferably, an avoidance groove 14 is provided on the side of the movable mold plate 10, and the avoidance groove 14 can accommodate the lower end of the inclined guide column 3 to avoid movement interference.

[0053] Further, in the present embodiment, the oblique guide column 3 includes a first rod body 15 and a second rod body 16, the first rod body 15 is obliquely fastened and installed on the fixed mold plate 7, the first rod body 15 points to the outer side of the rear mold group 2, and the ends of the first rod body 15 and the second rod body 16 are threadedly connected. Specifically, the first rod body 15 is formed in a bolt shape, and the second rod body 16 is formed in a column shape; the second rod body 16 extends from the fixed mold plate 7 to the outer side of the rear mold group 2, and the second rod body 16 can slide through the rear mold slider 4. The front end of the first rod body 15 is formed with an external thread, and the lower surface of the fixed mold plate 7 is concavely provided with a guide column seat 17, the front end of the first rod body 15 passes through the fixed mold plate 7 and reaches the guide column seat 17, and the second rod body 16 extends into the guide column seat 17 and is threadedly connected with the first rod body 15. The fixed mold plate 7 is provided with a threaded oblique hole 18, the threaded oblique hole 18 is connected to the guide column seat 17, and the first rod body 15 is fastened and installed in the threaded oblique hole 18. The rear mold slider 4 is provided with a guide column slot 19, and the second rod body 16 can be slidably installed in the guide column slot 19. The shape and size of the guide column slot 19 are adapted to the second rod body 16 for close installation without leaving a vacant position for assembly, so as to prevent the second rod body 16 from swinging in the guide column slot 19 when the mold is opened. When the mold is opened, the front mold group 1 leaves the rear mold group 2, and the oblique guide column 3 forces the rear mold slider 4 to expand and open. Preferably, the first rod body 15 can directly select a high-strength bolt standard part, and the second rod body 16 can be a rectangular column or a cylinder, and the upper end of the second rod body 16 is provided with an internal thread. In particular, in order to ensure the working strength of the second rod 16 during mold opening, the upper end of the second rod 16 penetrates into the middle or above the fixed mold plate 7, that is, the depth of the guide column seat 17 is not less than half the thickness of the fixed mold plate 7. In this way, the upper end of the second rod 16 tightly assembled in the guide column seat 17 is embedded in the fixed mold plate 7 for a long enough length, thereby ensuring that the second rod 16 is not easily bent or deformed under the action of lateral stress during mold opening, which can effectively improve production efficiency.

[0054] Further, in this embodiment, the rear mold slider 4 includes a first side slider 20 and a second side slider 32, and the two first side sliders 20 and the two second side sliders 32 are symmetrically mounted on the upper surface of the movable mold plate 10, respectively, and the two first side sliders 20 can slide forward and backward together on the movable mold plate 10, and the two second side sliders 32 can slide forward and backward together on the movable mold 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 mounted first side sliders 20 can also adapt to adjustment and not be completely the same, and the two symmetrically mounted second side sliders 32 can also adapt to adjustment and not be completely the same.

[0055] Further, in this embodiment, a plurality of inclined guide pillars 3 are evenly distributed on the fixed template 7, each first side slider 20 is provided with at least two guide pillar slots 19, and each first side slider 20 is mounted by at least two inclined guide pillars 3. Each second side slider 32 is provided with at least two guide pillar slots 19, and each second side slider 32 is mounted by at least two inclined guide pillars 3.

[0056] Further, in the present embodiment, the first side slider 20 comprises a first slider seat 21, a first pressing block 22, a first guide block 23, a first limit block 24 and a first insert 25. The first insert 25 is fastened and mounted on the rear side of the first slider seat 21. The first slider seat 21 is press-fitted on the movable plate 10 through two first pressing blocks 22. The first pressing blocks 22 are fastened and connected to the movable plate 10 by screws. The first slider seat 21 can slide along the axial direction of the first pressing blocks 22. Optionally, the first insert 25 can be integrally formed with the first slider seat 21. One side surface of the first slider seat 21 is formed as an inclined surface. The inclined surface of the first slider seat 21 cooperates with the inclined surface of the lower side surface of the fixed plate 7, which is conducive to the fixed plate 7 pressing the first side slider 20 when the mold is closed. The first guide block 23 is fixedly mounted on the upper surface of the movable template 10, and the bottom surface of the first slider seat 21 is provided with a first guide groove 26, which is adapted to be installed on the first guide block 23. The first guide groove 26 guides the first slider seat 21 to slide on the movable template 10 through the first guide block 23. The first guide groove 26 and the first guide block 23 can make the first slider seat 21 retreat in a balanced manner during the mold opening process. The first limit block 24 is fixedly mounted on the axial outer end of the first pressure block 22, and the first limit block 24 limits the first slider seat 21 from detaching from the movable template 10. Preferably, the first limit block 24 can be directly fixedly mounted on the side of the movable template 10, and the first limit block 24 is directly opposite to the outer end surface of the first slider seat 21.

[0057] Furthermore, in the present embodiment, the first side slider 20 further includes a first wear-resistant block 27, which is fixedly mounted on the side of the first slider seat 21, that is, the first wear-resistant block 27 is fixedly mounted on the inclined surface of the first slider seat 21, and the first wear-resistant block 27 is used for contacting and rubbing with the fixed mold plate 7. Preferably, the inclined surface on the fixed mold plate 7 that contacts the first wear-resistant block 27 can also be provided with a corresponding wear-resistant block, and the plane where the first slider seat 21 and the movable mold plate 10 are in sliding contact can also be provided with a corresponding wear-resistant block, so that the service life of the mold can be extended and the production cost can be reduced. It should be noted that the wear-resistant blocks of the present invention are all made of wear-resistant steel.

[0058] Furthermore, in the present embodiment, the first side slider 20 further includes a first buckle 28 and a first spring 29. The first buckle 28 is arranged on the upper surface of the movable template 10, and the first spring 29 is arranged on the side of the first limit block 24. The first buckle 28 and the first spring 29 keep the first slider seat 21 stable. Specifically, a first guide groove 30 is arranged on the upper surface of the movable template 10, and the opening of the first buckle 28 corresponds to the arrangement of the first guide groove 30; a first stop pin 31 is arranged on the first slider seat 21, and the front end of the first stop pin 31 passes through the first slider seat 21 and extends to the first guide groove 30. When the mold is opened, the first slider seat 21 drives the first stop pin 31 to move along the first guide groove 30 and buckle into the first buckle 28. The first buckle 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 mold plate 7, the inclined surface of the first slider seat 21 is subjected to the mold closing force, and the first stop pin 31 is disengaged from the first tiger buckle 28, so that the mold can be closed smoothly. The first spring 29 is installed on the outer side of the first limit block 24 by bolts. The bolt passes through the first limit block 24 and is threadedly connected to the first slider seat 21. The first spring 29 provides tension 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 tension of the first side slider 20 by the bolt. The tension of the first spring 29 helps the first side slider 20 to slide outward when the mold is opened, reduces the force on the second rod body 16, and prevents the second rod body 16 corresponding to the first side slider 20 from being deformed or broken. It should be noted that the first side slider 20 can also be provided with only the first tiger buckle 28 without the first spring 29. If both are provided, the stability of the first side slider 20 is more guaranteed. In particular, when the mass of the first side slider 20 is large, both are usually provided to play a dual stabilizing role.

[0059] Further, in the present embodiment, the second side slider 32 comprises a second slider seat 33, a second pressing block 34, a second guide block 35, a second guide groove 36, a second stopper block 37 and a second insert 38. The second insert 38 is fixedly mounted on the rear side of the second slider seat 33, the second slider seat 33 is pressed onto the movable plate 10 through two second pressing blocks 34, the second pressing blocks 34 are fixedly connected to the movable plate 10 through screws, and the second slider seat 33 can slide along the axial direction of the second pressing blocks 34. Optionally, the second insert 38 can be integrally formed with the second slider seat 33, one side of the second slider seat 33 is formed as an inclined surface, the inclined surface of the second slider seat 33 cooperates with the inclined surface of the lower side of the fixed plate 7, which is conducive to the fixed plate 7 pressing the second side slider 32 when the mold is closed. The second guide block 35 is fixedly mounted on the upper surface of the movable template 10, and the second guide groove 36 is arranged on the bottom surface of the second slider seat 33. The second guide groove 36 is adapted to the installation of the second guide block 35. The second guide groove 36 guides the second slider seat 33 to slide on the movable template 10 through the second guide block 35. The second guide groove 36 and the second guide block 35 can make the second slider seat 33 retreat in a balanced manner during the mold opening process. The second limit block 37 is fixedly mounted on the side of the movable template 10, and the bottom surface of the second slider seat 33 is also provided with a first limit groove 39. The second limit block 37 cooperates with the first limit groove 39 to limit the second slider seat 33 from leaving the movable template 10.

[0060] Further, in the present embodiment, the second side slider 32 further includes a second wear-resistant block 40, which is fixedly mounted on the side of the second slider seat 33, that is, the second wear-resistant block 40 is fixedly mounted on the inclined surface of the second slider seat 33, and the second wear-resistant block 40 is used for contacting and rubbing with the fixed mold plate 7. Preferably, the inclined surface on the fixed mold plate 7 that contacts the second wear-resistant block 40 can also be correspondingly provided with a wear-resistant block, and the plane on which the second slider seat 33 and the movable mold plate 10 are in sliding contact can also be provided with a corresponding wear-resistant block, so that the service life of the mold can be extended and the production cost can be reduced.

[0061] Further, in the present embodiment, the second side slider 32 further includes a second buckle 41 and a second spring 42. The second buckle 41 is arranged on the upper surface of the movable plate 10. The second spring 42 is arranged inside the rear side of the second slider seat 33 and abuts against the rear mold core 9. The second buckle 41 and the second spring 42 keep the second slider seat 33 stable. Specifically, the upper surface of the movable plate 10 is provided with a second guide groove 43. The opening of the second buckle 41 corresponds to the arrangement of the second guide groove 43. The second slider seat 33 is provided with a second stop pin 44. The front end of the second stop pin 44 passes through the second slider seat 33 and extends to the second guide groove 43. When the mold is opened, the second slider seat 33 drives the second stop pin 44 to move along the second guide groove 43 and buckle into the second buckle 41. The second buckle 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 mold plate 7, the inclined surface of the second slider seat 33 is subjected to the mold closing force, and the second stop pin 44 is disengaged from the second tiger buckle 41, so that the mold can be closed smoothly. The rear side surface of the second slider seat 33 is provided with a plurality of first blind holes 45, and the second springs 42 are respectively installed in the first blind holes 45. The front end of the second spring 42 abuts against the rear mold core 9. The second spring 42 provides tension for 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. The tension of the second spring 42 helps the second side slider 32 to slide outward when the mold is opened, reduces the force on the second rod body 16, and prevents the second rod body 16 corresponding to the second side slider 32 from deforming or breaking. Optionally, a stopper 46 may be provided on the second side slider 32. The stopper 46 is fixedly mounted on the upper surface of the movable platen 10 or one side of the rear mold core 9. When the mold is closed, the stopper 46 is located directly below the second insert 38. The stopper 46 is used to abut against the front end of the second spring 42. It should be noted that the second side slider 32 may also be provided with only the second tiger buckle 41 without the second spring 42. If both are provided, the stability of the second side slider 32 is more guaranteed. In particular, when the mass of the second side slider 32 is large, both are usually provided to play a dual stabilization role.

[0062] Furthermore, in this embodiment, the rear mold slider 4 also includes a third side slider 47, which is installed on one of the second side sliders 32. The third side slider 47 includes a third slider seat 48, a third insert 49, a third pressure block 50 and a third limit block 51. The second slider seat 33 is provided with a first mounting seat 52. The third insert 49 is fastened to the rear side surface of the third slider seat 48. The third insert 49 can slide through the rear mold core 9. The shape of the third insert 49 is specifically designed according to the shape of the injection molded product. The third slider seat 48 is pressed onto the first mounting seat 52 by two third pressing blocks 50. The third pressing block 50 is fastened to the second slider seat 33 by screws. The third slider seat 48 can slide along the axial direction of the third pressing block 50. The third limiting block 51 is fastened onto the first mounting seat 52. The bottom surface of the third slider seat 48 is provided with a second limiting groove 61. The third limiting block 51 cooperates with the second limiting groove 61 to limit the third slider seat 48 from being separated from the first mounting seat 52. The third limiting block 51 is a limiting screw. Optionally, an outer side surface of the third slider seat 48 is formed as an inclined surface. The inclined surface of the third slider seat 48 cooperates with the inclined surface of the lower side surface of the fixed mold plate 7, which is conducive to the fixed mold plate 7 pressing the third side slider 47 when the mold is closed. The inclined surface of the third slider seat 48 is also provided with a third wear-resistant block 53, which is used for contacting and rubbing with the fixed mold plate 7. Preferably, the inclined surface on the fixed mold plate 7 that contacts the third wear-resistant block 53 can also be correspondingly provided with a wear-resistant block, and the plane on which the third slider seat 48 and the second slider seat 33 are in sliding contact can also be provided with a corresponding wear-resistant block, so as to extend the service life of the mold and reduce production costs.

[0063] Furthermore, in this embodiment, in order to enable the third side slider 47 to slide on the first mounting seat 52, the third side slider 47 is further configured with a first connecting block 54 and a second oblique guide column 55, the first connecting block 54 is fixedly mounted in the mounting groove 56 on the lower side of the fixed mold plate 7, and the second oblique guide column 55 obliquely passes through the first connecting block 54 and is slidably connected to the third slider seat 48. When the mold is opened, the second oblique guide column 55 opens the third slider seat 48 under the action of the first connecting block 54, thereby enabling the third side slider 47 to slide outward to open the mold.

[0064] Furthermore, in order to stabilize the third side slider 47, the third side slider 47 is also equipped with a third spring 57 and a limiting wave ball 58. Specifically, a plurality of second blind holes 59 are provided on the rear side of the third slider seat 48, and 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 and assembled in the second blind hole 59. The tension of the third spring 57 helps the third side slider 47 to slide outward when the mold is opened, reduces the force on the second oblique guide column 55, and prevents the second oblique guide column 55 from deforming or breaking. The limiting wave ball 58 can be resiliently installed on the bottom surface of the third slider seat 48, and a wave ball seat 60 is arranged on the top of the first mounting seat 52. When the mold is opened, the limiting wave ball 58 engages with the wave ball seat 60 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 the mold closing force, and the limiting ball 58 escapes from the ball seat 60, so that the mold can be closed smoothly.

[0065] The injection mold of the present invention adopts a split inclined guide column 3 design, and the first rod body 15 and the second rod body 16 are manufactured independently, which is simple to process and not easy to deform, and the manufacturing cost is low; the first rod body 15 is directly fastened to the fixed mold plate 7, and the second rod body 16 is then threadedly connected to the first rod body 15, and the assembly is tight, and it is not easy to break during injection molding, thereby improving production efficiency and reducing production costs.

[0066] In the injection mold of the present invention, when closing the mold, the front mold group 1 approaches the rear mold group 2, the fixed mold plate 7 presses the rear mold slider 4, and the injection molding is completed through the injection runner. When opening the mold, the front mold group 1 leaves the rear mold group 2, and the fixed mold plate 7 drives the second rod body 16 and the second inclined guide column 55 to move upward; the second inclined guide column 55 drives the third side slider 47 to slide outward at least 8mm, and stops at the third limit block 51; the second rod body 16 corresponding to the first side slider 20 drives the first side slider 20 to slide outward at least 45mm, and stops at the first limit block 24; the second rod body 16 corresponding to the second side slider 32 drives the second side slider 32 to slide outward at least 35mm, and stops at the second limit block 37; the mold opening is completed. Finally, after the ejector plate 12 drives the ejector to move upward to complete the demoulding action, the ejector plate 12 and the ejector are reset under the action of the reset spring, and then the next mold closing can be cycled.

[0067] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. Injection mold, characterized in that, include: A front mold group, a rear mold group, a split oblique guide column and a rear mold slider, wherein the rear mold slider is slidably mounted on the rear mold group, and the front mold group has a fixed mold plate; The oblique guide column 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 assembly, and the ends of the first rod body and the second rod body are threadedly connected; The second rod body extends from the fixed mold plate toward the outer side of the rear mold assembly, and the second rod body can slidably pass through the rear mold slider; The front end of the first rod body is formed with an external thread, the lower surface of the fixed template is concavely provided with a guide column seat, the front end of the first rod body passes through the fixed template and reaches the guide column seat, and the second rod body extends into the guide column seat and is threadedly connected with the first rod body; The fixed template is provided with a threaded oblique hole, the threaded oblique hole is connected to the guide column seat, and the first rod body is fastened and installed in the threaded oblique hole; The second rod body is formed as a column, the rear mold slider is provided with a guide column slide groove, and the second rod body is slidably mounted in the guide column slide groove; When the mold is opened, the front mold group leaves the rear mold group, and the inclined guide column forces the rear mold slider to expand and open.

2. The injection mold according to claim 1, characterized in that: The rear mold assembly includes a movable mold plate, and the rear mold slider includes a first side slider and a second side slider. The two first side sliders and the two second side sliders are symmetrically installed on the upper surface of the movable mold plate, respectively. The two first side sliders can slide forward and backward together on the movable mold plate, and the two second side sliders can slide forward and backward together on the movable mold plate.

3. The injection mold according to claim 2, characterized in that: A plurality of the oblique guide pillars are evenly distributed on the fixed template, each of the first side sliders is provided with at least two guide pillar slots, and each of the first side sliders is mounted in cooperation with at least two of the oblique guide pillars; Each of the second side sliders is provided with at least two of the guide post sliding grooves, and each of the second side sliders is mounted in cooperation with at least two of the inclined guide posts.

4. The injection mold according to claim 3, characterized in that: The first side slider includes a first slider seat, a first pressing block, a first guide block, a first limit block and a first insert; The first insert is fixedly mounted on the first slider seat, the first slider seat is pressed onto the movable platen through two first pressing blocks, the first pressing block is fixedly connected to the movable platen, and the first slider seat can slide along the axial direction of the first pressing block; The first guide block is fastened to the upper surface of the movable platen, and the bottom surface of the first slider seat is provided with a first guide groove, the first guide groove is adapted to be installed on the first guide block, and the first guide groove guides the first slider seat to slide on the movable platen through the first guide block; The first limit block is fixedly mounted on the axial outer end of the first pressing block, and the first limit block limits the first sliding block seat from being separated from the movable template.

5. The injection mold according to claim 4, characterized in that: The first side slider further comprises a first wear-resistant block, which is mounted on a side surface of the first slider seat and is used for contacting and rubbing with the fixed template.

6. The injection mold according to claim 5, characterized in that: The first side slider also includes a first tiger buckle and a first spring. The first tiger buckle is arranged on the upper surface of the movable template, and the first spring is arranged on the side of the first limit block. The first tiger buckle and the first spring keep the first slider seat stable.

7. The injection mold according to claim 3, characterized in that: The second side slider includes a second slider seat, a second pressing block, a second guide block, a second guide groove, a second limit block and a second insert; The second insert is fixedly mounted on the second slider seat, the second slider seat is pressed onto the movable platen through two second pressing blocks, the second pressing blocks are fixedly connected to the movable platen, and the second slider seat can slide along the axial direction of the second pressing blocks; The second guide block is fastened to the upper surface of the movable platen, and the bottom surface of the second slider seat is provided with a second guide groove, the second guide groove is adapted to be installed on the second guide block, and the second guide groove guides the second slider seat to slide on the movable platen through the second guide block; The second limit block is fastened to the side of the movable template, and the bottom surface of the second sliding seat is also provided with a first limit groove. The second limit block cooperates with the first limit groove to limit the second sliding block seat from leaving the movable template.

8. The injection mold according to claim 7, characterized in that: The second side slider also includes a second wear-resistant block, which is installed on the side of the second slider seat and is used for contacting and rubbing with the fixed template.

9. The injection mold according to claim 8, characterized in that: The second side slider also includes a second tiger buckle and a second spring. The second tiger buckle is arranged on the upper surface of the movable mold plate. The second spring is arranged inside the rear side of the second slider seat and abuts against the rear mold core. The second tiger buckle and the second spring keep the second slider seat stable.

10. The injection mold according to claim 2, characterized in that: The rear mold slider further includes a third side slider, and the third side slider is installed on one of the second side sliders; The third side slider includes a third slider seat, a third insert, a third pressure block and a third limit block. The second slider seat is provided with a first mounting seat. The third insert is fastened to the third slider seat. The third slider seat is pressed onto the first mounting seat through two third pressure blocks. The third pressure block is fixedly connected to the second slider seat. The third slider seat can slide along the axial direction of the third pressure block. The third limit block is fastened to the first mounting seat. The bottom surface of the third slider seat is provided with a second limit groove. The third limit block cooperates with the second limit groove to limit the third slider seat from separating from the first mounting seat.

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