Secondary ejection mechanism for ejector plate of injection mold

Abstract

The utility model relates to a secondary ejection mechanism for an ejector pin plate of an injection mold, which belongs to the technical field of injection molding and comprises a secondary ejection mechanism body, and a second ejector pin, a second ejector pin plate, a first ejector pin plate and a movable mold panel which are arranged on the secondary ejection mechanism body, avoiding holes are formed in the top surfaces of the second ejector pin plate and the fixed block; and the second ejector pin penetrates through the top avoiding hole and extends into the bottom avoiding hole. According to the secondary ejection mechanism for the ejector plate of the injection mold, through clearance fit between a positioning rod and a positioning hole, a second ejector pin is fixed, the second ejector pin is conveniently disassembled and assembled, a worker can conveniently operate, under the action of a spring, the positioning rod is supported, the stability of the positioning rod is improved, and meanwhile, the positioning rod can be conveniently disassembled and assembled. And through clearance fit between the supporting rods and the supporting holes, the movable plate is supported, and the stability of the movable plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to a secondary ejection mechanism for an ejector plate of an injection mold. Background Art

[0002] Injection molding is a method of producing industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and die casting. Injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting materials. Injection molding is achieved through injection molding machines and molds.

[0003] Chinese patent CN219381458U discloses a secondary ejection mechanism for an injection mold. The patent discloses a two-stage ejection, a structurally reliable technical solution, which solves the problem that existing injection molded parts have undercuts and need to be ejected compulsorily, and some products have special structures and there is no deformation space for forced ejection. For such injection molded parts, a single ejection mechanism cannot be used to complete demolding.

[0004] When the device is in use, the second ejector pin is fixed by a threaded connection. However, the threaded connection is easily rusted and thread-slipped due to interference from external factors, which makes it inconvenient for staff to disassemble and assemble the second ejector pin. Therefore, a secondary ejection mechanism for an ejector pin plate of an injection mold is proposed to solve the above problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a secondary ejection mechanism for an injection mold ejector pin plate, which has the advantage of convenient disassembly and assembly, and solves the problem that when the device is in use, the second ejector pin is fixed by a threaded connection, but the threaded connection is easily rusted and stripped due to interference from external factors, which makes it inconvenient for staff to disassemble and assemble the second ejector pin.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a secondary ejection mechanism of an injection mold ejector plate, comprising a secondary ejection mechanism body, a second ejector, a second ejector plate, a first ejector plate and a movable mold panel arranged on the secondary ejector mechanism body, wherein a fixed block is fixedly connected to the interior of the second ejector plate.

[0007] The top surfaces of the second ejector plate and the fixed block are both provided with clearance holes, the second ejector passes through the top clearance hole and extends to the inside of the bottom clearance hole, two mounting plates are placed inside the clearance hole at the bottom, and the opposite sides of the two mounting plates are fixedly connected with positioning rods, the left side and the right side of the second ejector are both provided with positioning holes, and the positioning rods extend to the inside of the positioning holes.

[0008] The fixing block is provided with a supporting assembly for supporting the positioning rod.

[0009] The movable mold panel is provided with a driving assembly for driving the positioning rod to move.

[0010] Furthermore, the two clearance holes are both clearance-matched with the second ejector pin, and the positioning rod is clearance-matched with the positioning hole.

[0011] Further, the supporting assembly includes two limit plates, and the two limit plates are respectively fixedly connected to the top surfaces of the two mounting plates; the interior of the fixed block is provided with two card slots, and the interiors of the two card slots are fixedly connected with telescopic rods, and the two telescopic rods are respectively fixedly connected to the two mounting plates; the outer peripheral walls of the two telescopic rods are respectively provided with springs fixedly connected to the card slots and the mounting plates; the interior of the fixed block is provided with two limit slots, and the limit plates extend to the interior of the limit slots, and the two limit slots are respectively located at the tops of the two card slots.

[0012] Furthermore, the limit plate is an L-shaped plate, the limit plate and the limit groove are slidably connected, the telescopic rod is composed of a sleeve and a moving rod, one end of the moving rod passes through and extends to the interior of the sleeve, the outer side of the moving rod is fixedly connected with a limiting block located inside the sleeve, and one side of the sleeve is provided with a through hole compatible with the moving rod.

[0013] Furthermore, the driving assembly includes two movable plates, and the two movable plates are respectively fixedly connected to the bottom surfaces of the two mounting plates, the bottom surfaces of the first ejector plate and the movable mold panel are both provided with placement grooves, the two movable plates penetrate the top placement groove and extend to the inside of the bottom placement groove, the inside of the movable mold panel is provided with two support holes, and the side surfaces of the two movable plates close to the movable mold panel are fixedly connected to a support rod with one end penetrating the placement groove and extending to the inside of the support hole.

[0014] Furthermore, the support rod and the support hole are clearance-matched, and the movable plate and the placement groove are slidably connected.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] The secondary ejection mechanism of the ejector plate of the injection mold fixes the second ejector through the clearance fit between the positioning rod and the positioning hole, and the second ejector is conveniently disassembled and assembled, which is convenient for workers to operate. The positioning rod is supported by the action of the spring to improve the stability of the positioning rod. At the same time, the movable plate is supported through the clearance fit between the support rod and the support hole to improve the stability of the movable plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 for Figure 1 A is a schematic diagram of the structure enlargement;

[0019] Figure 3 It is a top view schematic diagram of the limiting plate in the structure of the utility model.

[0020] In the figure: 1 secondary ejection mechanism body, 2 second ejector, 3 second ejector plate, 4 first ejector plate, 5 movable mold panel, 6 movable plate, 7 support rod, 8 support hole, 9 placement slot, 10 fixed block, 11 clearance hole, 12 positioning hole, 13 positioning rod, 14 limit plate, 15 limit slot, 16 card slot, 17 telescopic rod, 18 spring, 19 mounting plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 In this embodiment, a secondary ejector mechanism of an injection mold ejector plate includes a secondary ejector mechanism body 1, a second ejector 2, a second ejector plate 3, a first ejector plate 4 and a movable mold panel 5 arranged on the secondary ejector mechanism body 1, and a fixing block 10 is fixedly connected to the interior of the second ejector plate 3.

[0023] The second ejector plate 3 and the top surface of the fixed block 10 are both provided with a clearance hole 11, the second ejector 2 passes through the top clearance hole 11 and extends to the inside of the bottom clearance hole 11, two mounting plates 19 are placed inside the bottom clearance hole 11, and the opposite sides of the two mounting plates 19 are fixedly connected with positioning rods 13, and the left and right sides of the second ejector 2 are both provided with positioning holes 12, and the positioning rods 13 extend to the inside of the positioning hole 12.

[0024] The two clearance holes 11 are both clearance-matched with the second ejector pin 2 , and the positioning rod 13 is clearance-matched with the positioning hole 12 .

[0025] Specifically, the second ejector pin 2 enters the inside of the clearance hole 11, the positioning rod 13 and the positioning hole 12 are located on the same center line, the positioning rod 13 is inserted into the inside of the positioning hole 12, and the second ejector pin 2 is fixed by the clearance fit between the positioning rod 13 and the positioning hole 12.

[0026] In this embodiment, a support assembly is provided on the fixed block 10, and the support assembly includes two limit plates 14, and the two limit plates 14 are respectively fixedly connected to the top surfaces of the two mounting plates 19. The fixed block 10 is provided with two card slots 16 inside, and the insides of the two card slots 16 are fixedly connected with telescopic rods 17, and the two telescopic rods 17 are respectively fixedly connected to the two mounting plates 19. The outer peripheral walls of the two telescopic rods 17 are respectively provided with springs 18 fixedly connected to the card slots 16 and the mounting plates 19. The fixed block 10 is provided with two limit slots 15 inside, and the limit plates 14 extend to the inside of the limit slots 15. The two limit slots 15 are respectively located on the tops of the two card slots 16.

[0027] Among them, the limit plate 14 is an L-shaped plate, the limit plate 14 and the limit groove 15 are slidably connected, the telescopic rod 17 is composed of a sleeve and a moving rod, one end of the moving rod passes through and extends to the inside of the sleeve, the outer side of the moving rod is fixedly connected with a limiting block located inside the sleeve, and a through hole compatible with the moving rod is opened on one side of the sleeve.

[0028] Specifically, the mounting plate 19 is moved to disengage the positioning hole 13 from the positioning hole 12, and the telescopic rod 17 and the spring 18 are squeezed to shrink the telescopic rod 17 and the spring 18. The mounting plate 19 is supported by the sliding connection between the limiting plate 14 and the limiting groove 15 to improve the stability of the mounting plate 19. The positioning rod 13 and the positioning hole 12 are located on the same center line. The movable plate 6 is loosened, and the positioning rod 13 is pushed to reset under the action of the spring 18.

[0029] In this embodiment, a driving assembly is provided on the movable mold panel 5, and the driving assembly includes two movable plates 6, and the two movable plates 6 are respectively fixedly connected to the bottom surfaces of the two mounting plates 19. The bottom surfaces of the first ejector plate 4 and the movable mold panel 5 are provided with placement grooves 9, and the two movable plates 6 pass through the top placement groove 9 and extend to the inside of the bottom placement groove 9. Two support holes 8 are provided inside the movable mold panel 5, and the side surfaces of the two movable plates 6 close to the movable mold panel 5 are fixedly connected to a support rod 7 with one end passing through the placement groove 9 and extending to the inside of the support hole 8.

[0030] Among them, the support rod 7 and the support hole 8 are clearance-matched, and the movable plate 6 and the placement groove 9 are slidably connected.

[0031] Specifically, the movable plate 6 is pulled so that the movable plate 6 drives the mounting plate 19 to move, and the movable plate 6 is supported by the clearance fit between the support rod 7 and the support hole 8, thereby improving the stability of the movable plate 6.

[0032] The working principle of the above embodiment is:

[0033] Pull the movable plate 6 to make the movable plate 6 drive the mounting plate 19 to move, so that the positioning hole 13 is separated from the positioning hole 12, and the telescopic rod 17 and the spring 18 are squeezed to shrink the telescopic rod 17 and the spring 18. The mounting plate 19 is supported by the sliding connection between the limiting plate 14 and the limiting groove 15 to improve the stability of the mounting plate 19. The second ejector 2 enters the inside of the yield hole 11, and the positioning rod 13 and the positioning hole 12 are located on the same center line. The movable plate 6 is loosened, and the positioning rod 13 is pushed to reset under the action of the spring 18. The positioning rod 13 is inserted into the inside of the positioning hole 12, and the second ejector 2 is fixed by the clearance fit between the positioning rod 13 and the positioning hole 12. The movable plate 6 is supported by the clearance fit between the support rod 7 and the support hole 8 to improve the stability of the movable plate 6.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A secondary ejector mechanism of an injection mold ejector plate, comprising a secondary ejector mechanism body (1), a second ejector (2), a second ejector plate (3), a first ejector plate (4) and a movable mold panel (5) arranged on the secondary ejector mechanism body (1), characterized in that: A fixing block (10) is fixedly connected inside the second ejector plate (3); The second ejector plate (3) and the top surface of the fixed block (10) are both provided with a clearance hole (11), the second ejector (2) passes through the top clearance hole (11) and extends to the inside of the bottom clearance hole (11), two mounting plates (19) are placed inside the clearance hole (11) at the bottom, and the two mounting plates (19) are fixedly connected to the opposite side surfaces thereof with positioning rods (13), the left side and the right side of the second ejector (2) are both provided with positioning holes (12), and the positioning rods (13) extend to the inside of the positioning hole (12); The fixed block (10) is provided with a supporting assembly, and the movable mold panel (5) is provided with a driving assembly.

2. The secondary ejection mechanism of the ejector plate of an injection mold according to claim 1, characterized in that: The two clearance holes (11) are both clearance-matched with the second ejector pin (2), and the positioning rod (13) and the positioning hole (12) are clearance-matched.

3. The secondary ejection mechanism of the ejector plate of an injection mold according to claim 1, characterized in that: The support assembly comprises two limit plates (14), the two limit plates (14) are respectively fixedly connected to the top surfaces of the two mounting plates (19), the fixed block (10) is provided with two card slots (16), the insides of the two card slots (16) are both fixedly connected with telescopic rods (17), the two telescopic rods (17) are respectively fixedly connected to the two mounting plates (19), the outer peripheral walls of the two telescopic rods (17) are respectively provided with springs (18) fixedly connected to the card slots (16) and the mounting plates (19), the fixed block (10) is provided with two limit slots (15), the limit plates (14) extend to the inside of the limit slots (15), and the two limit slots (15) are respectively located at the tops of the two card slots (16).

4. The secondary ejection mechanism of the ejector plate of an injection mold according to claim 3, characterized in that: The limit plate (14) is an L-shaped plate, and the limit plate (14) and the limit groove (15) are slidably connected. The telescopic rod (17) consists of a sleeve and a moving rod. One end of the moving rod penetrates and extends into the interior of the sleeve, and the outer side of the moving rod is fixedly connected to a limiting block located inside the sleeve, and a through hole adapted to the moving rod is opened on one side of the sleeve.

5. The secondary ejection mechanism of the ejector plate of an injection mold according to claim 3, characterized in that: The driving assembly comprises two movable plates (6), the two movable plates (6) are respectively fixedly connected to the bottom surfaces of two mounting plates (19), the bottom surfaces of the first ejector plate (4) and the movable mold panel (5) are both provided with placement grooves (9), the two movable plates (6) penetrate the top placement groove (9) and extend to the inside of the bottom placement groove (9), the inside of the movable mold panel (5) is provided with two support holes (8), and the side surfaces of the two movable plates (6) close to the movable mold panel (5) are both fixedly connected with a support rod (7) having one end penetrating the placement groove (9) and extending to the inside of the support hole (8).

6. The secondary ejection mechanism of the ejector plate of an injection mold according to claim 5, characterized in that: The support rod (7) and the support hole (8) are clearance-matched, and the movable plate (6) and the placement groove (9) are slidably connected.

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