Splicing type inclined ejector block for demolding

Abstract

The utility model relates to the technical field of injection molds, and discloses a splicing type inclined ejector block for demolding, which comprises a splicing type inclined ejector piece which is arranged in a core pulling groove on a cavity and comprises a central ejector block and a side ejector block, a sliding connection structure is arranged on the side surface of the central ejector block, the sliding connection structure is connected with the side ejector block in a sliding manner, and the side ejector block is connected with the splicing type inclined ejector piece. The sliding connection structure is formed by connecting a sliding groove and a sliding block. One end of the push rod penetrates through the cavity and is connected to the bottom of each center ejector block and the bottom of each side ejector block, the other end of the push rod is connected to the core-pulling push plate, and the core-pulling push plate moves relative to the cavity when being pushed; and each push rod is sleeved with one guide sleeve, and each guide sleeve is fixed on the cavity. The pitched roof is designed to be the splicing type pitched roof block composed of the center ejector block and the side ejector blocks connected to the side faces of the center ejector block in a sliding mode, the pitched roof production difficulty is reduced, the splicing type pitched roof is easier to mount and dismount, compared with a scattered type pitched roof, the number of ejector rods is reduced, and the interior of a mold is prevented from being too complex.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and specifically relates to a spliced angled ejector block for demolding. Background Art

[0002] Molds are used in the production of injection products. The mold includes a cavity and a core. Product demolding refers to the process of separating the product from the cavity or the core after the cavity and the core are separated. This process requires the use of a core-pulling device. The commonly used core-pulling devices are divided into straight ejectors and angled ejectors. In actual production, the angled ejector has a higher usage rate and is applicable to more products with various shapes.

[0003] In order to increase the core-pulling area, it is necessary to increase the volume or quantity of the angled ejectors. Large-sized angled ejectors are costly and difficult to manufacture, while too many angled ejectors will increase the installation difficulty. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a spliced angled ejector block for demolding, which has the advantages of reducing the number of ejector rods, increasing the internal space of the mold, being convenient for processing and assembly, reducing machining dimensional errors, and reducing the installation process steps, thus solving the problems in the above background art.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solutions:

[0008] A spliced angled ejector block for demolding, comprising:

[0009] A spliced angled ejector member, installed in the core-pulling groove on the cavity. The spliced angled ejector member includes a central ejector block and at least one side ejector block. The upper surfaces of each central ejector block and side ejector block are flush. At least one side of the central ejector block is provided with a sliding connection structure, and at least one side ejector block is slidably connected to each sliding connection structure. The sliding connection structure is a side sliding groove and a side sliding block respectively arranged on the central ejector block and the side ejector block;

[0010] Ejector rods, one end of each ejector rod passes through the cavity and is respectively connected to the bottom of each central ejector block and side ejector block, and the other end is connected to the core-pulling push plate. When the core-pulling push plate is pushed, it moves relative to the cavity;

[0011] Bushings, a bushing is sleeved on each ejector rod, and each bushing is fixed on the cavity.

[0012] Preferably, the push rod connected to the bottom of the central top block is a straight push rod, and the push rod connected to the bottom of the guide sleeve is an inclined push rod. The straight push rod is vertically connected between the central top block and the core-pulling push plate. Both ends of the straight push rod are fixed to the central top block and the core-pulling push plate respectively. The inclined push rod is obliquely connected between the central top block and the core-pulling push plate. One end of the inclined push rod is fixed to the side top block, and the other end is movably connected to the core-pulling push plate.

[0013] The bottom of the central top block and the side top block are respectively provided with push rod holes for connecting the push rods. The side of the side top block is provided with side bolt holes for fixing the bolts of the push rod at the bottom of the side top block. The top of the spliced inclined ejector is provided with a central bolt hole, and a bolt for fixing the push rod at the bottom of the central top block is arranged in the central bolt hole.

[0014] Preferably, the spliced inclined ejector is a double-sided three-piece inclined ejector. The double-sided three-piece inclined ejector includes a central top block and two side top blocks slidably connected to both sides of the central top block. The sliding directions of the two side top blocks are the same.

[0015] Preferably, the spliced inclined ejector is a double-sided five-piece inclined ejector. The double-sided five-piece inclined ejector includes a central top block and four side top blocks slidably connected to both sides of the central top block. Two side top blocks with opposite sliding directions are arranged on the same side of the central top block.

[0016] Preferably, the spliced inclined ejector is a single-sided three-piece inclined ejector. The single-sided three-piece inclined ejector includes a central top block and two side top blocks slidably connected to one side of the central top block. Two side top blocks with opposite sliding directions are arranged on the same side of the central top block.

[0017] Preferably, a cover plate is arranged at the position of the central bolt hole on the top of the central top block. When the cover plate is installed, the top surface of the cover plate is flush with the top surface of the central top block. An elastic buckle is arranged below the cover plate. The bottom end of the elastic buckle passes through the central top block and is located in the side chute. When the side top block slides towards the middle, the elastic buckle is squeezed.

[0018] Preferably, a shallow groove is also arranged on the side of the cover plate, which is convenient for removing the cover plate.

[0019] Preferably, a bolt hidden hole is also arranged at the bottom of the cover plate for accommodating the bolt in the central bolt hole.

[0020] Preferably, the cavity is fixed below the cavity push plate. The cavity push plate drives the cavity to move up and down. The core-pulling push plate is slidably connected below the cavity push plate. During demolding, the core-pulling push plate slides relative to the cavity push plate.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the utility model provides a spliced angled ejector block for demolding, which has the following beneficial effects:

[0023] 1. For the spliced angled ejector block for demolding, by designing the angled ejector as a spliced angled ejector block composed of a central ejector block and multiple side ejector blocks slidably connected to the side of the central ejector block, the difficulty of manufacturing the angled ejector is reduced, and the splicing type is easier to install and disassemble. Compared with the dispersed angled ejector, the number of ejector rods is reduced, avoiding excessive complexity inside the mold.

[0024] 2. For the spliced angled ejector block for demolding, by using a straight ejector rod to connect the bottom of the central ejector block and an angled ejector rod to connect the top of the side ejector block, the straight ejector rod moves vertically during demolding, while the angled ejector rod slides along the groove on the side of the central ejector block during demolding, so as to push the product for demolding at different inclined angles, which is more suitable for various products with different shapes.

[0025] 3. For the spliced angled ejector block for demolding, by setting a cover plate on the top of the central ejector block to cover the bolts inside the side slider, product defects are reduced. At the same time, elastic buckles are arranged at the bottom of the cover plate, so that during the lifting process of the core pulling structure, the side ejector blocks on both sides squeeze towards the middle to make the elastic buckles retract, so as to facilitate the removal of the cover plate when the core pulling structure pops out and fix the cover plate when the core pulling structure retracts, which is convenient for disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the mold to which the utility model is applied.

[0027] Figure 2 It is a schematic structural diagram of the mold of the utility model after removing the core.

[0028] Figure 3 It is a schematic structural diagram of the utility model after removing the core and the cavity.

[0029] Figure 4 It is a schematic structural diagram of a set of core pulling structures of the utility model.

[0030] Figure 5 It is an exploded view of a set of core pulling structures of the utility model.

[0031] Figure 6 It is a schematic structural diagram of a double-sided three-piece angled ejector part of the utility model.

[0032] Figure 7 It is a schematic structural diagram of the ejector block part of the double-sided three-piece angled ejector part of the utility model.

[0033] Figure 8 It is a schematic structural diagram of a double-sided five-piece angled ejector part of the utility model.

[0034] Figure 9This is a schematic structural view of the top block part of the double-sided five-piece inclined top part of the present utility model.

[0035] Figure 10 This is a schematic structural view of the cover plate on the central top block of the present utility model.

[0036] In the figure: 1, cavity; 2, core; 3, cavity push plate; 4, core-pulling push plate; 11, core-pulling groove; 5, core-pulling structure; 51, spliced inclined top part; 52, guide sleeve; 53, push rod; 511, double-sided three-piece inclined top part; 512, double-sided five-piece inclined top part; 513, single-sided three-piece inclined top part; 531, straight push rod; 532, inclined push rod; 61, central top block; 62, side top block; 601, push rod hole; 611, side sliding groove; 621, side slider; 612, central bolt hole; 622, side bolt hole; 613, cover plate; 614, elastic buckle; 615, shallow groove; 616, bolt hidden hole. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0040] Embodiment 1:

[0041] This embodiment provides a spliced inclined top block for demolding, having the following technical features.

[0042] Please refer to Figure 1-10, A spliced inclined ejector block for demolding, which is applied to mold demolding. The mold includes a cavity 1 and a core 2. The mold cavity is located between the cavity 1 and the core 2. A core-pulling groove 11 is provided at the position of the cavity 1 or the core 2 in the mold cavity. A core-pulling structure 5 is installed in the cavity 1 or the core 2. The core-pulling structure 5 includes:

[0043] A spliced inclined ejector part 51, which is installed in the core-pulling groove 11 on the cavity 1. The spliced inclined ejector part 51 includes a central ejector block 61 and at least one side ejector block 62. The upper surfaces of the central ejector block 61 and the side ejector blocks 62 are flush. At least one sliding connection structure is provided on at least one side of the central ejector block 61. At least one side ejector block 62 is slidably connected to each sliding connection structure. The sliding connection structure is a side chute 611 and a side slider 621 respectively provided on the central ejector block 61 and the side ejector blocks 62;

[0044] A push rod 53. One end of each push rod 53 passes through the cavity 1 and is respectively connected to the bottom of each central ejector block 61 and side ejector block 62, and the other end is connected to the core-pulling push plate 4. When the core-pulling push plate 4 is pushed, it moves relative to the cavity 1;

[0045] A guide sleeve 52. A guide sleeve 52 is sleeved on each push rod 53, and each guide sleeve 52 is fixed on the cavity 1.

[0046] Furthermore, the push rod 53 connected to the bottom of the central ejector block 61 is a straight push rod 531, and the push rod 53 connected to the bottom of the guide sleeve 52 is an inclined push rod 532. The straight push rod 531 is vertically connected between the central ejector block 61 and the core-pulling push plate 4. The two ends of the straight push rod 531 are respectively fixed on the central ejector block 61 and the core-pulling push plate 4. The inclined push rod 532 is obliquely connected between the central ejector block 61 and the core-pulling push plate 4. One end of the inclined push rod 532 is fixed on the side ejector block 62, and the other end is movably connected to the core-pulling push plate 4;

[0047] Push rod holes 601 for connecting the push rod 53 are respectively provided at the bottoms of the central ejector block 61 and the side ejector blocks 62. Side bolt holes 622 are provided on the side surfaces of the side ejector blocks 62. The side bolt holes 622 are used for bolts to fix the push rod 53 at the bottom of the side ejector blocks 62. A central bolt hole 612 is provided at the top of the spliced inclined ejector part 51. A bolt for fixing the push rod 53 at the bottom of the central ejector block 61 is provided in the central bolt hole 612.

[0048] Furthermore, the spliced inclined ejector part 51 is a double-sided three-piece inclined ejector part 511. The double-sided three-piece inclined ejector part 511 includes a central ejector block 61 and two side ejector blocks 62 slidably connected to both sides of the central ejector block 61. The sliding directions of the two side ejector blocks 62 are the same.

[0049] Further, the spliced inclined ejector 51 is a double-sided five-piece inclined ejector 512. The double-sided five-piece inclined ejector 512 includes a central ejector block 61 and four side ejector blocks 62 slidably connected to both sides of the central ejector block 61. Two side ejector blocks 62 with opposite sliding directions are arranged on the same side of the central ejector block 61.

[0050] Further, the spliced inclined ejector 51 is a single-sided three-piece inclined ejector 513. The single-sided three-piece inclined ejector 513 includes a central ejector block 61 and two side ejector blocks 62 slidably connected to one side of the central ejector block 61. Two side ejector blocks 62 with opposite sliding directions are arranged on the same side of the central ejector block 61.

[0051] Further, as Figure 4 shown, two double-sided three-piece inclined ejectors 511 can be arranged on both sides within a set of core-pulling structures 5, and a double-sided five-piece inclined ejector 512 and a single-sided three-piece inclined ejector 513 are arranged in the middle.

[0052] Further, the inclined push rod 532 is slidably connected to the chute on the surface of the core-pulling push plate 4.

[0053] Since the central ejector block 61 is located in the middle and it is impossible to set the bolt for fixing the push rod 53 on the side like the side ejector block 62, and setting a central bolt hole 612 on the top of the central ejector block 61 to install the bolt will cause the top surface to be uneven, resulting in more burrs on the injection-molded product and affecting the product yield. Therefore, further, a cover plate 613 is provided at the position of the central bolt hole 612 on the top of the central ejector block 61. When the cover plate 613 is installed, its top surface is flush with the top surface of the central ejector block 61. An elastic buckle 614 is provided below the cover plate 613. The bottom end of the elastic buckle 614 passes through the central ejector block 61 and is located in the side chute 611. When the side ejector block 62 slides towards the middle, it squeezes the elastic buckle 614.

[0054] Further, a shallow groove 615 is also provided on the side of the cover plate 613 to facilitate the disassembly of the cover plate 613.

[0055] Further, a bolt hidden hole 616 is also provided at the bottom of the cover plate 613 for accommodating the bolt in the central bolt hole 612.

[0056] Further, the cavity 1 is fixed below the cavity push plate 3. The cavity push plate 3 drives the cavity 1 to move up and down. The core-pulling push plate 4 is slidably connected below the cavity push plate 3. During demolding, the core-pulling push plate 4 slides relative to the cavity push plate 3.

[0057] In summary, for the split angled lifter used for demolding, by designing the angled lifter as a split angled lifter composed of a central lifter block 61 and multiple side lifter blocks 62 slidably connected to the side of the central lifter block 61, the difficulty of manufacturing the angled lifter is reduced, and the split type is easier to install and disassemble. Compared with the decentralized angled lifter, the number of ejector rods is reduced, avoiding excessive complexity inside the mold.

[0058] For the split angled lifter used for demolding, by connecting the bottom of the central lifter block 61 with a straight ejector rod 531 and connecting the top of the side lifter block 62 with an angled ejector rod 532. The straight ejector rod 531 moves vertically during demolding, while the angled ejector rod 532 slides along the groove on the side of the central lifter block 61 during demolding, so as to push the product for demolding at different inclined angles, which is more suitable for various products with different shapes.

[0059] For the split angled lifter used for demolding, by arranging a cover plate 613 on the top of the central lifter block 61 to cover the bolts inside the side slider 621, product defects are reduced. At the same time, an elastic buckle 614 is arranged at the bottom of the cover plate 613. When the core-pulling structure 5 is lifted, the two side lifter blocks 62 squeeze towards the middle, causing the elastic buckle 614 to retract. Thus, it is convenient to take out the cover plate 613 when the core-pulling structure 5 pops out and fix the cover plate 613 when the core-pulling structure 5 retracts, which is convenient for disassembly.

[0060] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0061] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spliced angled ejector block for demolding, characterized in that, Including: A spliced inclined ejector (51) is installed in the core-pulling groove (11) on the cavity (1). The spliced inclined ejector (51) includes a central ejector block (61) and at least one side ejector block (62). The upper surfaces of each central ejector block (61) and side ejector block (62) are flush. At least one side of the central ejector block (61) is provided with a sliding connection structure, and at least one side ejector block (62) is slidably connected to each sliding connection structure. The sliding connection structure is a side chute (611) and a side slider (621) respectively arranged on the central ejector block (61) and the side ejector block (62); Push rods (53), one end of each push rod (53) passes through the cavity (1) and is respectively connected to the bottom of each central ejector block (61) and side ejector block (62), and the other end is connected to the core-pulling push plate (4). When the core-pulling push plate (4) is pushed, it moves relative to the cavity (1); Bushings (52), a bushing (52) is sleeved on each push rod (53), and each bushing (52) is fixed on the cavity (1).

2. The spliced angled ejector block for demolding according to claim 1, wherein The push rod (53) connected to the bottom of the central ejector block (61) is a straight push rod (531), and the push rod (53) connected to the bottom of the bushing (52) is an inclined push rod (532). The straight push rod (531) is vertically connected between the central ejector block (61) and the core-pulling push plate (4), and both ends of the straight push rod (531) are respectively fixed on the central ejector block (61) and the core-pulling push plate (4). The inclined push rod (532) is obliquely connected between the central ejector block (61) and the core-pulling push plate (4). One end of the inclined push rod (532) is fixed on the side ejector block (62), and the other end is movably connected to the core-pulling push plate (4); The bottom of the central ejector block (61) and the side ejector block (62) are respectively provided with push rod holes (601) for connecting the push rods (53). The side of the side ejector block (62) is provided with side bolt holes (622). The side bolt holes (622) are used for bolts to fix the push rods (53) at the bottom of the side ejector block (62). The top of the spliced inclined ejector (51) is provided with a central bolt hole (612), and a bolt for fixing the push rod (53) at the bottom of the central ejector block (61) is arranged in the central bolt hole (612).

3. The split angled ejector block for demolding according to claim 2, characterized in that, The spliced inclined ejector (51) is a double-sided three-piece inclined ejector (511). The double-sided three-piece inclined ejector (511) includes a central ejector block (61) and two side ejector blocks (62) slidably connected to both sides of the central ejector block (61). The sliding directions of the two side ejector blocks (62) are the same.

4. The split type angled ejector block for demolding according to claim 2, wherein, The spliced inclined ejector (51) is a double-sided five-piece inclined ejector (512). The double-sided five-piece inclined ejector (512) includes a central ejector block (61) and four side ejector blocks (62) slidably connected to both sides of the central ejector block (61). Two side ejector blocks (62) with opposite sliding directions are arranged on the same side of the central ejector block (61).

5. The split angled ejector block for demolding according to claim 2, wherein The spliced inclined ejector part (51) is a single-side triple-spliced inclined ejector part (513). The single-side triple-spliced inclined ejector part (513) includes a central ejector block (61) and two side ejector blocks (62) slidably connected to one side of the central ejector block (61). Two side ejector blocks (62) with opposite sliding directions are arranged on the same side of the central ejector block (61).

6. The split angled lifter for demolding according to claim 4 or 5, characterized in that, At the position of the central bolt hole (612) on the top of the central ejector block (61), a cover plate (613) is provided. When the cover plate (613) is installed, the top surface is flush with the top surface of the central ejector block (61). An elastic buckle (614) is provided below the cover plate (613). The bottom end of the elastic buckle (614) passes through the central ejector block (61) and is located in the side chute (611). When the side ejector block (62) slides towards the middle, it squeezes the elastic buckle (614).

7. A spliced angled ejector block for demolding according to claim 6, characterized in that, A shallow groove (615) is further provided on the side surface of the cover plate (613) to facilitate the removal of the cover plate (613).

8. A spliced inclined ejector block for demolding according to claim 6, characterized in that, A bolt hidden hole (616) is further provided at the bottom of the cover plate (613) for accommodating the bolt in the central bolt hole (612).

9. The split angled ejector block for demolding according to claim 1, characterized in that, The cavity (1) is fixed below the cavity ejector plate (3). The cavity ejector plate (3) drives the cavity (1) to move up and down. The core-pulling ejector plate (4) is slidably connected below the cavity ejector plate (3). During demolding, the core-pulling ejector plate (4) slides relative to the cavity ejector plate (3).

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