Secondary ejection structure of injection mold

Abstract

The utility model discloses a secondary ejection structure of an injection mold. The upper surface of a bottom plate is fixedly connected with a side plate, the upper end of the side plate is provided with a lower mold, the inner side of the side plate is provided with a first-stage ejection plate, the upper surface of the first-stage ejection plate is symmetrically and fixedly connected with first-stage ejection rods, and the upper ends of the first-stage ejection rods penetrate through the lower mold and are fixedly connected with a push plate; the side surface of the first-stage ejector rod is sleeved with a second-stage ejector plate, a second-stage ejector assembly is arranged on the upper surface of the second-stage ejector plate, grooves II are symmetrically formed in the upper surface of the first-stage ejector plate, second-stage ejector driving assemblies are arranged in the grooves II, an upper mold is arranged on the upper surface of the lower mold, and an upper plate is fixedly connected to the upper surface of the upper mold. The surfaces of the two sides of the lower die are detachably connected with the upper ends of the side plates through symmetrically-arranged buckle assemblies. Product deformation caused by uneven ejection force of the ejection structure is prevented, the production quality of injection molding products is improved, meanwhile, step-by-step ejection demolding can be conducted on the products, the demolding difficulty of the products is reduced, and the demolding efficiency of the products is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold ejection structure technical field, concretely is a kind of injection mold secondary ejection structure. BACKGROUND

[0002] Injection molding is a method of production molding of industrial products. Products are usually molded using rubber and plastic. Injection molding can also be divided into injection molding and die casting, injection molding machine (referred to as injection machine or injection molding machine) is the main molding equipment for making various shapes of plastic products by using thermoplastic or thermosetting material, and injection molding is realized by injection molding machine and mold.

[0003] The existing injection mold usually needs to be matched with secondary ejection structure during production process, so as to facilitate the taking out of injection products in the injection mold, and the secondary ejection structure in the prior art is not uniform in ejection force, which can easily cause the deformation of the ejected products due to uneven force, thereby reducing the production quality of injection products. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a kind of secondary ejection structure of injection mold, solve the problem of uneven ejection force when using traditional ejection structure, to prevent the deformation of product caused by uneven ejection force of ejection structure, and improve the production quality of injection product, and the product can be ejected step by step, thereby reducing the difficulty of product demolding and improving the efficiency of product demolding.

[0005] To achieve the above purpose, the utility model is realized by the following technical scheme: a kind of secondary ejection structure of injection mold, including bottom plate, the upper surface of the bottom plate is fixedly connected with side plate, and the upper end of side plate is equipped with lower mold, the inner side of side plate is equipped with first ejection plate, and the upper surface of first ejection plate is fixedly connected with first ejector rod in symmetry, the upper end of first ejector rod is fixedly connected with push plate through lower mold, and the side surface of first ejector rod is equipped with second ejection plate, and the upper surface of second ejection plate is equipped with second ejection assembly, the upper surface of first ejection plate is equipped with recess II in symmetry, and the inside of recess II is equipped with second ejection driving assembly, the upper surface of lower mold is equipped with upper mold, and the upper surface of upper mold is fixedly connected with upper plate, the two side surfaces of lower mold are detachably connected with the upper end of side plate through the buckle assembly arranged in symmetry.

[0006] As further optimization, the second ejection assembly includes symmetrically arranged second ejector rod, and the upper end of the second ejector rod passes through the lower mold and the push plate through the through hole, the upper surface of the push plate is provided with a recess I, and the recess I is provided with an ejection frame in the inside, and the upper end of the second ejector rod is located on the lower surface of the ejection frame.

[0007] As further optimization, the secondary ejection plate is fixedly connected with a reset spring on the upper surface, and the upper end of the reset spring is fixedly connected with the lower surface of the lower mold.

[0008] As further optimization, the secondary ejection plate is fixedly connected with a reset spring on the upper surface, and the upper end of the reset spring is fixedly connected with the lower surface of the lower mold.

[0009] As further optimization, the inner side surface of the lower mold is symmetrically provided with a limiting sliding groove, and the limiting sliding groove is slidably connected with a limiting sliding plate inside, and the lower end of the limiting sliding plate is fixedly connected with the side surface of the push plate.

[0010] As further optimization, the buckle assembly comprises a clamping groove, and a groove III is formed in the inner wall of the clamping groove, and a clamping rod is arranged inside the groove III, and one end of the clamping rod is fixedly connected with a sliding block, and the lower surface of the sliding block is fixedly connected with a tension spring, and the lower end of the tension spring is fixedly connected with the upper surface of the side plate.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1. The secondary ejection plate arranged on the upper surface of the primary ejection plate, the secondary ejection rod fixedly connected with the upper surface of the secondary ejection plate, the limiting slot fixedly connected with the inner side surface of the side plate and the push plate arranged inside the lower mold and the ejection frame are cooperated with each other, so that the problem of uneven ejection force of the traditional ejection structure is solved, the product deformation caused by uneven ejection force of the ejection structure is prevented, the production quality of the injection molded product is improved, the product can be step-by-step ejected, the difficulty of product ejection is reduced, and the efficiency of product ejection is improved.

[0013] 2. The clamping groove symmetrically formed in the side surface of the lower mold, the clamping rod arranged in the clamping groove, the groove III formed in the inner surface of the clamping groove and the sliding block and the tension spring are cooperated with each other, so that the lower mold can be quickly installed and disassembled, and different injection molded products can be conveniently processed. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is an enlarged structural schematic view of A in the utility model;

[0016] Figure 3 It is an internal structural schematic view of the lower mold in the utility model;

[0017] Figure 4It is the inside structure schematic view of side plate in the utility model.

[0018] Figure 5 It is the structure schematic view of primary ejection plate in the utility model.

[0019] In the drawing: 1, bottom plate; 101, side plate; 102, limiting groove; 2, primary ejection plate; 201, push plate; 202, recess I; 203, limiting sliding plate; 204, primary ejector rod; 205, guide wheel; 206, recess II; 207, warped plate; 3, lower mould; 301, clamping groove; 302, recess III; 303, clamping rod; 304, limiting sliding groove; 305, return spring; 306, sliding block; 307, tension spring; 4, upper mould; 401, upper plate; 5, secondary ejection plate; 501, ejection frame; 502, secondary ejector rod. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the utility model.

[0021] As Figures 1 to 5 A secondary ejection structure of injection mold, including bottom plate 1, the upper surface of bottom plate 1 is fixedly connected with side plate 101, and the upper end of side plate 101 is provided with lower mould 3, the inner side of side plate 101 is provided with primary ejection plate 2, and the upper surface of primary ejection plate 2 is fixedly connected with primary ejector rod 204 in symmetry, the upper end of primary ejector rod 204 is fixedly connected with push plate 201 through lower mould 3, and the side surface of primary ejector rod 204 is sleeved with secondary ejection plate 5, and the upper surface of secondary ejection plate 5 is provided with secondary ejection assembly, the upper surface of primary ejection plate 2 is provided with recess II 206 in symmetry, and the inside of recess II 206 is provided with secondary ejection driving assembly, the upper surface of lower mould 3 is provided with upper mould 4, and the upper surface of upper mould 4 is fixedly connected with upper plate 401, and the two side surfaces of lower mould 3 are detachably connected with the upper end of side plate 101 through the symmetrically arranged buckle assembly.

[0022] Specifically, the secondary ejection assembly includes symmetrically arranged secondary ejector rod 502, and the upper end of secondary ejector rod 502 passes through lower mould 3 and push plate 201 through a through hole, the upper surface of push plate 201 is provided with recess I 202, and the inside of recess I 202 is provided with ejection frame 501, and the upper end of secondary ejector rod 502 is located on the lower surface of ejection frame 501, so that the injection molded product can be uniformly stressed when the secondary ejection assembly ejects the injection molded product, avoiding the deformation of the injection molded product when being ejected.

[0023] Further, the secondary ejection driving assembly comprises a flap 207, and the flap 207 is located inside the groove II 206, the middle of the flap 207 is rotationally connected with the inner wall of the groove II 206 through a rotating shaft, one end of the flap 207 is fixedly connected with a guide wheel 205, one side of the guide wheel 205 is provided with a limiting groove 102, and the limiting groove 102 is fixedly connected with the inner side surface of the side plate 101, the flap 207, the guide wheel 205 and the limiting groove 102 can push the secondary ejection plate 5 to rise for the second time, and the secondary ejection plate 5 can eject the injection molded product for the second time, and the demolding difficulty of the injection molded product is reduced.

[0024] In addition, the upper surface of the secondary ejection plate 5 is fixedly connected with a return spring 305, and the upper end of the return spring 305 is fixedly connected with the lower surface of the lower mold 3, so that the secondary ejection plate 5 can be restored to the original position after secondary ejection, and the secondary ejection plate 5 is convenient for next use.

[0025] Specifically, the inner side surface of the lower mold 3 is symmetrically provided with a limiting sliding groove 304, and the limiting sliding groove 304 is slidably connected with a limiting sliding plate 203, the lower end of the limiting sliding plate 203 is fixedly connected with the side surface of the push plate 201, the limiting sliding groove 304 and the limiting sliding plate 203 can further limit the push plate 201, and the stability of the push plate 201 is improved, and the deformation of the injection molded product caused by deviation of the push plate 201 during movement is avoided.

[0026] The buckle assembly comprises a clamping groove 301, and the inner wall of the clamping groove 301 is provided with a groove III 302, the inner part of the groove III 302 is provided with a clamping rod 303, one end of the clamping rod 303 is fixedly connected with a sliding block 306, the lower surface of the sliding block 306 is fixedly connected with a tension spring 307, and the lower end of the tension spring 307 is fixedly connected with the upper surface of the side plate 101, the clamping rod 303, the sliding block 306 and the tension spring 307 in the buckle assembly cooperate with the clamping groove 301 and the groove III 302, so that the lower mold 3 can be quickly disassembled or replaced, and different products can be injection molded.

[0027] The utility model discloses when using, through external hydraulic cylinder and push the first ejection plate 2 to the lower mould 3 movement, the second ejection plate 5 on the first ejection plate 2 upper surface also approaches the lower mould 3 at this moment, and at the same time, the first ejector rod 204 on the first ejection plate 2 upper surface will push the push plate 201 to move up through the lower mould 3, thereby to the injection moulding product in the lower mould 3 first ejection, the warped plate 207 in recess II 206 interior also approaches the lower mould 3 at this moment, when the guide pulley 205 of warped plate 207 one end is on the upper end of spacing groove 102, the warped plate 207 will be warped up at this moment, and the other end of warped plate 207 will lift the second ejection plate 5, the second ejection plate 5 will push the second ejector rod 502 to go up at this moment, therefore, the second ejector rod 502 will eject the injection moulding product again through the ejection frame 501, thereby to the injection moulding product demoulding, when demoulding is completed, through external hydraulic cylinder, the first ejection plate 2 is pulled back to the original position, the reset spring 305 on the second ejection plate 5 upper surface will push the second ejection plate 5 to return to the original position at this moment, after that, the next product is injection moulded again.

[0028] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by the person skilled in the art.

[0029] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement "a process, method, article, or apparatus that comprises a list of elements" means that the process, method, article, or apparatus includes the listed elements, but not excluding other elements of either the same or of a different kind.

[0030] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives, and variations can be made in the embodiments without departing from the spirit and scope of the present application as defined by the appended claims and their equivalents.

Claims

1. A secondary ejection structure of an injection mold comprising a base plate (1), characterized in that: The upper surface of the bottom plate (1) is fixedly connected with a side plate (101), and the upper end of the side plate (101) is provided with a lower die (3). The inner side of the side plate (101) is provided with a first ejection plate (2), and the upper surface of the first ejection plate (2) is fixedly connected with a first ejector rod (204) in a symmetrical manner. The upper end of the first ejector rod (204) is fixedly connected with a push plate (201) through the lower die (3), and the side surface of the first ejector rod (204) is sleeved with a second ejection plate (5). The upper surface of the second ejection plate (5) is provided with a second ejection assembly. The upper surface of the first ejection plate (2) is symmetrically provided with a groove II (206), and the inside of the groove II (206) is provided with a second ejection driving assembly. The upper surface of the lower die (3) is provided with an upper die (4), and the upper surface of the upper die (4) is fixedly connected with an upper plate (401). The two side surfaces of the lower die (3) are detachably connected with the upper end of the side plate (101) through the symmetrically arranged buckle assemblies.

2. The secondary ejection structure of an injection mold according to claim 1, wherein: The second ejection assembly comprises symmetrically arranged second ejector rods (502), and the upper end of the second ejector rod (502) passes through the lower die (3) and the push plate (201) through the through hole. The upper surface of the push plate (201) is provided with a groove I (202), and the inside of the groove I (202) is provided with an ejection frame (501). The upper end of the second ejector rod (502) is located on the lower surface of the ejection frame (501).

3. The secondary ejection structure of an injection mold according to claim 1, wherein: The second ejection driving assembly comprises a warped plate (207), and the warped plate (207) is located in the inside of the groove II (206). The middle of the warped plate (207) is rotationally connected with the inner wall of the groove II (206) through a rotating shaft. One end of the warped plate (207) is fixedly connected with a guide wheel (205). One side of the guide wheel (205) is provided with a limiting groove (102), and the limiting groove (102) is fixedly connected with the inner side surface of the side plate (101).

4. The secondary ejection structure of an injection mold according to claim 1, wherein: The upper surface of the second ejection plate (5) is fixedly connected with a return spring (305), and the upper end of the return spring (305) is fixedly connected with the lower surface of the lower die (3).

5. The secondary ejection structure of claim 1, wherein: The inner side surface of the lower die (3) is symmetrically provided with a limiting sliding groove (304), and the inside of the limiting sliding groove (304) is slidably connected with a limiting sliding plate (203). The lower end of the limiting sliding plate (203) is fixedly connected with the side surface of the push plate (201).

6. The secondary ejection structure of an injection mold according to claim 1, wherein: The buckle assembly comprises a clamping groove (301), and the inner wall of the clamping groove (301) is provided with a groove III (302). The inside of the groove III (302) is provided with a clamping rod (303), and one end of the clamping rod (303) is fixedly connected with a sliding block (306). The lower surface of the sliding block (306) is fixedly connected with a tension spring (307), and the lower end of the tension spring (307) is fixedly connected with the upper surface of the side plate (101).

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