Quick return mechanism for mold ejector pin
By designing a mold thimble fast return mechanism, the compression and release mechanism of the spring can be used to achieve rapid return of the thimble plate, which solves the problem of the slow return speed of the existing thimble, improves the die-casting efficiency of the mold and avoids damage to the stamping model.
Patent Information
- Application Number
- CN202421093268.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-20
AI Technical Summary
Existing mold thimbles are too slow when returning to position, which affects the die-casting efficiency of the mold and may lead to damage to the stamping model.
A mold thimble quick return mechanism is designed, including a thimble plate, a bottom plate, a reset mechanism and an installation mechanism. The reset mechanism consists of an installation groove, a lower shell, a limiting block, a first spring, an upper shell and a sliding groove. The compression and release of the first spring enable the rapid return of the thimble plate. The sliding groove and a limiting block ensure that the thimble plate does not slide out during the return process.
The rapid return of the thimble plate is achieved, the die-casting efficiency of the mold is improved, and the damage to the stamping model caused by slow return is avoided.
Smart Images
Figure CN222588077U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field related to molds, in particular to a quick return mechanism for a mold ejector pin. Background Art
[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping, etc. They are tools that make the blank into a part with a specific shape and size under the action of external force. They are widely used in blanking, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and compression or injection molding of engineering plastics, rubber, ceramics and other products. The mold has a specific contour or inner cavity shape. The contour shape with a cutting edge can make the blank separate according to the contour shape. The inner cavity The shape can make the blank obtain the corresponding three-dimensional shape. The mold generally includes a movable mold and a fixed mold or a punch and a concave mold. The two parts can be separated or combined. When separated, the workpiece is taken out, and when combined, the blank is injected into the mold cavity for forming. The mold is a precision tool with a complex shape. It bears the expansion force of the blank and has high requirements on structural strength, rigidity, surface hardness, surface roughness and processing accuracy. The development level of mold production is one of the important indicators of the level of mechanical manufacturing, and the removal of the mold is inseparable from the help of the ejector. Therefore, a mold ejector quick return mechanism is particularly needed.
[0003] However, most of the existing ejectors do not consider the return speed when they are used. The return speed is too slow, which affects the normal die-casting efficiency of the mold. Some of them cause damage to the stamping model due to the slow return of the ejector. Utility Model Content
[0004] The utility model aims to provide a mold ejector pin quick return mechanism to solve the problem raised in the above background technology. However, most of the existing ejectors do not consider the return speed when they are used, and the return speed is too slow, which affects the normal mold die-casting efficiency. Some of them cause damage to the stamping model due to the slow return of the ejector pin.
[0005] To achieve the above object, the utility model provides the following technical solutions: a mold ejector quick return mechanism, comprising an ejector plate and a bottom plate, one side surface of the ejector plate is provided with a reset mechanism, one side surface of the bottom plate is provided with a mounting mechanism, one side surface of the ejector plate is fixedly connected to the bottom plate, one side surface of the bottom plate is fixedly connected to a bottom shell, and one side surface is fixedly connected to a mold locking sheet;
[0006] The reset mechanism includes a mounting groove, a lower shell, a limit block, a first spring, an upper shell and a slide groove. A mounting groove is provided on one side surface of the ejector plate, the inner surface of the mounting groove is slidably connected with the lower shell, the outer surface of the lower shell is fixedly connected with the limit block, the inner surface of the lower shell is installed with a first spring, one end of the first spring is fixedly connected with the upper shell, and the outer surface of the upper shell is provided with a slide groove.
[0007] Preferably, the inner wall size of the mounting groove matches the outer wall size of the lower shell, and the limit blocks are symmetrically distributed about the central axis of the lower shell.
[0008] Preferably, the outer wall size of the lower shell matches the inner wall size of the upper shell, and the outer wall size of the first spring matches the inner wall size of the lower shell.
[0009] Preferably, the outer wall size of the limit block matches the inner wall size of the slide slot, and the slide slot is symmetrically opened about the central axis of the upper shell.
[0010] Preferably, the mounting mechanism comprises a first mounting hole, a first limiting hole, a first fixing hole, a first limiting column, a second spring, a bolt, a fixing shaft, a second limiting column, a second mounting hole and a second fixing hole, a first mounting hole is opened on one side surface of the base plate, a first limiting hole is opened on one side surface of the first mounting hole, a first fixing hole is opened on one side surface of the first mounting hole, a first limiting column is fixedly connected to an inner side surface of the first limiting hole, a second spring is fixedly connected to an outer side surface of the first limiting column, a bolt is fixedly connected to one end surface of the second spring, a fixing shaft is installed on one side surface of the bolt, a second limiting column is connected to one side surface of the bolt, a second mounting hole is opened on one side surface of the ejector plate, and a second fixing hole is opened on one side surface of the second mounting hole.
[0011] Preferably, the second limiting column is slidably connected to the second fixing hole, and the outer wall size of the fixing shaft matches the inner wall size of the first fixing hole.
[0012] Preferably, the first mounting hole and the second mounting hole have the same size, and the outer wall size of the first limiting column matches the inner wall size of the first limiting hole.
[0013] Compared with the prior art, the utility model has the following beneficial effects: the ejector return mechanism is arranged through the mounting groove, the lower shell, the limit block, the first spring, the upper shell and the slide groove. When in use, the mounting groove and the lower shell will keep the first spring in a fixed position, and the upper shell is connected to the mold locking plate. When the ejector ejects the mold, the ejector plate will compress the first spring. After the mold is ejected, the spring is released, so that the ejector plate quickly returns to the initial position, and the slide groove and the limit block can ensure that the ejector plate will not slide out on the way back, which solves the problem of slow ejector return. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the reset mechanism of the utility model;
[0016] Figure 3 This is a schematic diagram of the structure in which the first mounting hole and the second mounting hole cooperate with each other in the utility model;
[0017] Figure 4 For this utility model Figure 3 Enlarged structural diagram at A in the middle.
[0018] In the figure: 1. ejector plate; 2. bottom plate; 3. bottom shell; 4. reset mechanism; 401. mounting groove; 402. lower shell; 403. limit block; 404. first spring; 405. upper shell; 406. slide groove; 5. mounting mechanism; 501. first mounting hole; 502. first limit hole; 503. first fixing hole; 504. first limit column; 505. second spring; 506. latch; 507. fixing shaft; 508. second limit column; 509. second mounting hole; 510. second fixing hole; 6. locking plate. DETAILED DESCRIPTION
[0019] 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.
[0020] See also Figure 1-4 The utility model provides a technical solution: a mold ejector quick return mechanism, including an ejector plate 1 and a bottom plate 2, a reset mechanism 4 is arranged on one side surface of the ejector plate 1, a mounting mechanism 5 is arranged on one side surface of the bottom plate 2, one side surface of the ejector plate 1 is fixedly connected to the bottom plate 2, and one side surface of the bottom plate 2 is fixedly connected to the bottom shell 3:
[0021] The reset mechanism 4 includes a mounting groove 401, a lower shell 402, a limit block 403, a first spring 404, an upper shell 405 and a slide groove 406. A mounting groove 401 is provided on one side surface of the ejector plate 1. The inner surface of the mounting groove 401 is slidably connected to the lower shell 402. The outer surface of the lower shell 402 is fixedly connected to the limit block 403. The inner surface of the lower shell 402 is installed with a first spring 404. One end of the first spring 404 is fixedly connected to the upper shell 405. The outer surface of the upper shell 405 is provided with a slide groove 406. 01, the lower shell 402, the limit block 403, the first spring 404, the upper shell 405 and the slide groove 406 are arranged. When in use, the installation groove 401 and the lower shell 402 will keep the first spring 404 in a fixed position, and the upper shell 405 is connected to the locking plate 6. When the ejector ejects the mold, the ejector plate 1 will compress the first spring 404. After the mold is ejected, the spring is released, so that the ejector plate 1 quickly returns to the initial position, and the slide groove 406 and the limit block 403 can ensure that the ejector plate 1 will not slide out on the way back.
[0022] Furthermore, the inner wall size of the mounting groove 401 matches the outer wall size of the lower shell 402, and the limit blocks 403 are symmetrically distributed about the central axis of the lower shell 402. Through the setting of the limit blocks 403, when in use, the limit blocks 403 can ensure that the lower shell 402 will not slip out of the upper shell 405.
[0023] Furthermore, the outer wall size of the lower shell 402 matches the inner wall size of the upper shell 405, and the outer wall size of the first spring 404 matches the inner wall size of the lower shell 402. Through the setting of the upper shell 405, when in use, the upper shell 405 can limit the position of the first spring 404.
[0024] Furthermore, the outer wall size of the limit block 403 matches the inner wall size of the slide groove 406, and the slide groove 406 is symmetrically opened with the central axis of the upper shell 405. Through the setting of the slide groove 406, when in use, the slide groove 406 allows the upper shell 402 and the lower shell 405 to slide relatively quickly.
[0025] Further, the mounting mechanism 5 includes a first mounting hole 501, a first limiting hole 502, a first fixing hole 503, a first limiting column 504, a second spring 505, a bolt 506, a fixed shaft 507, a second limiting column 508, a second mounting hole 509 and a second fixing hole 510. The first mounting hole 501 is provided on one side surface of the bottom plate 2, the first limiting hole 502 is provided on one side surface of the first mounting hole 501, the first fixing hole 503 is provided on one side surface of the first mounting hole 501, the first limiting column 504 is fixedly connected to the inner side surface of the first limiting hole 502, the second spring 505 is fixedly connected to the outer side surface of the first limiting column 504, the bolt 506 is fixedly connected to one end surface of the second spring 505, the fixing shaft 507 is installed on one side surface of the bolt 506, the second limiting column 508 is connected to one side surface of the bolt 506, and the second mounting hole 509 is provided on one side surface of the ejector plate 1 , a second fixing hole 510 is opened on one side surface of the second mounting hole 509. Through the arrangement of the first mounting hole 501, the first limiting hole 502, the first fixing hole 503, the first limiting column 504, the second spring 505, the bolt 506, the fixed shaft 507, the second limiting column 508, the second mounting hole 509 and the second fixing hole 510, when in use, when it is necessary to fix the bottom plate 2 on the ejector plate 1, first press the bolt 506 in the first mounting hole 501, the bolt 506 compresses the second spring 505, and the bolt 506 rotates around the fixed shaft 507, and at the same time the bolt 506 drives the second limiting column 508, and then the bottom plate 2 is brought close to the ejector plate 1 so that the first mounting hole 501 is opposite to the second mounting hole 509, at this time, the bolt 506 is released, the second spring 505 will push the bolt 506 back to the initial position, and at the same time the second limiting column 508 will also slide into the second fixing hole 510 to finally complete the installation.
[0026] Furthermore, the second limiting column 508 and the second fixing hole 510 form a sliding connection, and the outer wall size of the fixed shaft 507 matches the inner wall size of the first fixing hole 503. Through the setting of the fixed shaft 507, when in use, the bolt 506 will rotate around the fixed shaft 507.
[0027] Furthermore, the first mounting hole 501 and the second mounting hole 509 have the same size, and the outer wall size of the first limiting column 504 matches the inner wall size of the first limiting hole 502. Through the setting of the first limiting column 504, when in use, the first limiting column 504 can limit the position of the second spring 505.
[0028] Working principle: First, when in use, the mounting groove 401 and the lower shell 402 will keep the first spring 404 in a fixed position, and the upper shell 405 is connected to the mold locking plate 6. When the ejector ejects the mold, the ejector plate 1 will compress the first spring 404. After the mold is ejected, the spring is released, so that the ejector plate 1 quickly returns to the initial position, and the slide groove 406 and the limit block 403 can ensure that the ejector plate 1 will not slide out on the way back. When the bottom plate 2 needs to be fixed on the ejector plate 1, press The latch 506 is located in the first mounting hole 501, and the latch 506 compresses the second spring 505, and the latch 506 rotates around the fixed axis 507. At the same time, the latch 506 drives the second limiting column 508, and then the bottom plate 2 is brought close to the ejector plate 1 so that the first mounting hole 501 and the second mounting hole 509 are opposite to each other. At this time, the latch 506 is released, and the second spring 505 will push the latch 506 back to the initial position. At the same time, the second limiting column 508 will also slide into the second fixing hole 510 to complete the installation.
[0029] 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 mold ejector quick return mechanism, comprising an ejector plate (1) and a bottom plate (2), characterized in that: A reset mechanism (4) is provided on one side surface of the ejector plate (1), a mounting mechanism (5) is provided on one side surface of the bottom plate (2), one side surface of the ejector plate (1) is fixedly connected to the bottom plate (2), one side surface of the bottom plate (2) is fixedly connected to the bottom shell (3), and one side surface is fixedly connected to a locking plate (6); The reset mechanism (4) comprises a mounting groove (401), a lower shell (402), a limit block (403), a first spring (404), an upper shell (405) and a slide groove (406); a mounting groove (401) is provided on one side surface of the ejector plate (1); the inner surface of the mounting groove (401) is slidably connected to the lower shell (402); the outer surface of the lower shell (402) is fixedly connected to the limit block (403); the inner surface of the lower shell (402) is installed with a first spring (404); one end of the first spring (404) is fixedly connected to the upper shell (405); and the outer surface of the upper shell (405) is provided with a slide groove (406).
2. A mold ejector pin quick return mechanism according to claim 1, characterized in that: The inner wall size of the installation groove (401) matches the outer wall size of the lower shell (402), and the limit blocks (403) are symmetrically distributed about the central axis of the lower shell (402).
3. The mold ejector pin quick return mechanism according to claim 1, characterized in that: The outer wall size of the lower shell (402) matches the inner wall size of the upper shell (405), and the outer wall size of the first spring (404) matches the inner wall size of the lower shell (402).
4. The mold ejector pin quick return mechanism according to claim 1, characterized in that: The outer wall size of the limit block (403) matches the inner wall size of the slide groove (406), and the slide groove (406) is symmetrically opened about the central axis of the upper shell (405).
5. The mold ejector pin quick return mechanism according to claim 1, characterized in that: The mounting mechanism (5) comprises a first mounting hole (501), a first limiting hole (502), a first fixing hole (503), a first limiting column (504), a second spring (505), a latch (506), a fixing shaft (507), a second limiting column (508), a second mounting hole (509) and a second fixing hole (510); a first mounting hole (501) is provided on one side surface of the base plate (2); a first limiting hole (502) is provided on one side surface of the first mounting hole (501); a first fixing hole (503) is provided on one side surface of the first mounting hole (501); The inner surface of the first limiting hole (502) is fixedly connected to a first limiting column (504), the outer surface of the first limiting column (504) is fixedly connected to a second spring (505), one end surface of the second spring (505) is fixedly connected to a clamping bolt (506), a fixed shaft (507) is installed on one side surface of the clamping bolt (506), a second limiting column (508) is connected to one side surface of the clamping bolt (506), a second mounting hole (509) is opened on one side surface of the ejector plate (1), and a second fixing hole (510) is opened on one side surface of the second mounting hole (509).
6. A mold ejector pin quick return mechanism according to claim 5, characterized in that: The second limiting column (508) is slidably connected to the second fixing hole (510), and the outer wall size of the fixing shaft (507) matches the inner wall size of the first fixing hole (503).
7. The mold ejector pin quick return mechanism according to claim 5, characterized in that: The first mounting hole (501) and the second mounting hole (509) have the same size, and the outer wall size of the first limiting column (504) matches the inner wall size of the first limiting hole (502).