Retreating prevention mechanism for core-pulling oil cylinder
By designing the core extraction cylinder to prevent the backing mechanism, the combination of the limit elastic block and the delay limit block is used to solve the problem of the core extraction cylinder to retreat, reduce manufacturing costs and risks, and improve the stability of the mold.
Patent Information
- Application Number
- CN202421699678.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-18
AI Technical Summary
The core pulling cylinder is prone to retreat under injection molding pressure, resulting in high manufacturing costs and incorrect movement sequence, which poses risks.
A core extraction oil cylinder prevents the retreat mechanism, including a core extraction insert seat, oil cylinder, limiting elastic block and delay limit block. Through the design of the limiting elastic block, the oil cylinder controls the core pulling component not to retreat when entering the core; when retracting the core pulling, the delaying limiting block mechanism causes the limiting function to be invalid, allowing the core pulling component to retreat.
Effectively prevent the core pulling components from retreating, reduce the number of oil cylinders, reduce the risks and hidden dangers caused by the wrong movement order of multiple oil cylinders, and improve the stability of the mold.
Smart Images
Figure CN222875193U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic mold manufacturing, in particular to a core-pulling oil cylinder anti-backward mechanism. Background Art
[0002] Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. The coordinated changes of the mold convex and concave molds and the auxiliary molding system can process a series of plastic parts of different shapes and sizes.
[0003] The core pulling cylinder will retreat under the injection pressure, and it is necessary to add a vertical moving cylinder to prevent the core pulling component from retreating. The manufacturing cost is high. Utility Model Content
[0004] The utility model aims to provide a core pulling oil cylinder anti-backward mechanism to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a core pulling cylinder anti-retreat mechanism comprises a core pulling insert seat and a cylinder, the right side of the core pulling insert seat is slidably connected with the core pulling insert, a limiting spring block pressure plate is arranged on the top of the core pulling insert seat, a limiting groove is arranged on the top of the limiting spring block pressure plate, a limiting spring block is clamped in the limiting groove, and two first springs are fixedly connected to the top of the limiting spring block, an output shaft is fixedly arranged on the right end of the cylinder, the output shaft is fixedly connected to a cylinder connecting block by screws, the cylinder connecting block is clamped in a groove arranged on the left side of the core pulling insert seat, a cylinder delay limit block is clamped at the bottom of the cylinder connecting block, a cylinder delay limit block pressure plate is sleeved on the cylinder delay limit block, and the cylinder delay limit block pressure plate is fixedly connected to the core pulling insert seat by screws.
[0006] A clamping groove is provided at the top of the core-pulling insert seat corresponding to the bottom position of the limiting groove, and the bottom end of the limiting spring block extends into the clamping groove.
[0007] The front and rear ends of the core-pulling insert seat are both provided with pressure strips.
[0008] The bottom of the oil cylinder delay limit block is fixedly connected with two second springs.
[0009] Compared with the prior art, the beneficial effects of the utility model are:
[0010] The utility model adds a limit block on the core pulling component and the mold frame, and delays the action of the oil cylinder. When the oil cylinder is in the core position, the limit block will control the core pulling component to not retreat. When the oil cylinder is withdrawing the core, due to the delay mechanism, the oil cylinder first controls the limit block to move, making the limit function invalid, and then the core pulling component retreats, reducing the number of oil cylinders, reducing the risk of hidden dangers caused by the wrong movement sequence of multiple oil cylinders, and improving the stability of the mold. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a first stereoscopic schematic diagram of the utility model;
[0012] Figure 2 It is a second stereoscopic schematic diagram of the utility model;
[0013] Figure 3 It is an explosion diagram of the utility model;
[0014] Figure 4 It is a bottom view of the local structure of the utility model;
[0015] Figure 5 It is a partial explosion schematic diagram of the utility model;
[0016] Figure 6 It is a top view of the utility model;
[0017] Figure 7 It is an exploded schematic diagram of the oil cylinder delay limit block pressure plate, the oil cylinder delay limit block and the oil cylinder connecting block of the utility model.
[0018] In the figure: 1. core-pulling insert seat; 2. core-pulling insert; 3. limit spring block pressure plate; 4. limit spring block; 5. first spring; 6. pressure strip; 7. cylinder delay limit block pressure plate; 8. cylinder delay limit block; 9. second spring; 10. cylinder; 11. output shaft; 12. limit groove; 13. slot; 14. cylinder connecting block. 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 1-7The utility model provides a technical solution: a core-pulling cylinder anti-backward mechanism comprises a core-pulling insert seat 1 and a cylinder 10, the right side of the core-pulling insert seat 1 is slidably connected with a core-pulling insert 2, a limiting spring block pressure plate 3 is arranged on the top of the core-pulling insert seat 1, a limiting groove 12 is arranged on the top of the limiting spring block pressure plate 3, a limiting spring block 4 is clamped in the limiting groove 12, and two first springs 5 are fixedly connected to the top of the limiting spring block 4, an output shaft 11 is fixedly arranged on the right end of the cylinder 10, the output shaft 11 is fixedly connected with a cylinder connecting block 14 by screws, the cylinder connecting block 14 is clamped in a groove arranged on the left side of the core-pulling insert seat 1, a cylinder delay limiting block 8 is clamped at the bottom of the cylinder connecting block 14, a cylinder delay limiting block pressure plate 7 is sleeved on the cylinder delay limiting block 8, and the cylinder delay limiting block pressure plate 7 is fixedly connected to the core-pulling insert seat 1 by screws.
[0021] A clamping groove 13 is provided at the top of the core-pulling insert seat 1 at a position corresponding to the bottom of the limiting groove 12 , and the bottom end of the limiting spring block 4 extends into the clamping groove 13 .
[0022] The front and rear ends of the core-pulling insert seat 1 are both provided with pressure strips 6 .
[0023] Two second springs 9 are fixedly connected to the bottom of the oil cylinder delay limit block 8 .
[0024] When the oil cylinder 10 enters the position, under the action of the spring, the limit spring block 4 moves up to limit the position to prevent the core pulling slider from retreating. When the oil cylinder retreats, due to a delay of a distance, the action force is first applied to the limit block. When the limit block moves down due to the force and can no longer play a limiting role, the oil cylinder continues to retreat to drive the core pulling movement, thereby realizing the retreat of the core pulling.
[0025] 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.
[0026] 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 core pulling cylinder anti-backward mechanism, comprising a core pulling insert seat (1) and a cylinder (10), characterized in that: The right side of the core-pulling insert seat (1) is slidably connected with the core-pulling insert (2), the top of the core-pulling insert seat (1) is provided with a limit spring block pressure plate (3), the top of the limit spring block pressure plate (3) is provided with a limit groove (12), the limit spring block (4) is clamped in the limit groove (12), the top of the limit spring block (4) is fixedly connected with two first springs (5), the right end of the oil cylinder (10) is fixedly provided with an output shaft (11), the output shaft (11) is fixedly connected with an oil cylinder connecting block (14) by screws, the oil cylinder connecting block (14) is clamped in a groove provided on the left side of the core-pulling insert seat (1), the bottom of the oil cylinder connecting block (14) is clamped with a cylinder delay limit block (8), the oil cylinder delay limit block (8) is sleeved with a cylinder delay limit block pressure plate (7), and the oil cylinder delay limit block pressure plate (7) is fixedly connected to the core-pulling insert seat (1) by screws.
2. The core-pulling cylinder anti-backward mechanism according to claim 1, characterized in that: A clamping groove (13) is provided at the top of the core-pulling insert seat (1) corresponding to the bottom position of the limiting groove (12), and the bottom end of the limiting spring block (4) extends into the clamping groove (13).
3. The core-pulling cylinder anti-backward mechanism according to claim 1, characterized in that: The front and rear ends of the core-pulling insert seat (1) are both provided with pressure strips (6).
4. The core-pulling cylinder anti-backward mechanism according to claim 1, characterized in that: Two second springs (9) are fixedly connected to the bottom of the oil cylinder delay limit block (8).