Anti-retreating structure of inclined pulling sliding block
The oblique pull-up slider structure prevents the slider from retreating, which solves the problem of the slider of the die-casting mold, and improves the casting quality and production continuity.
Patent Information
- Application Number
- CN202421642884.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-07-11
AI Technical Summary
When the existing die-casting mold with cavity pressure is closed, the slider is prone to retreat, resulting in the unqualified casting size. Especially when the angle between the side hole or side concave mold direction and the mold opening direction is greater than 90 degrees, it is difficult to arrange the wedge-tight block to block, affecting continuous production.
The oblique pull-out slide structure is adopted, and the pin is pushed into the pressure plate groove through the oil cylinder. The T-shaped head and the pin are used to prevent the slide from retreating and ensure that the slide is formed stably in the mold cavity.
Effectively prevent the slider from retraction, improve the quality of die casting of molds, ensure that the castings are of qualified size, and support continuous production.
Smart Images
Figure CN223288954U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of die-casting molds, in particular to an anti-backward structure of an obliquely withdrawn slider. Background Art
[0002] Molds are various molds and tools used in industrial production to obtain the desired products by methods such as injection molding, blow molding, extrusion, die casting or forging, smelting, and stamping. In short, molds are tools used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. It is known as the "mother of industry". It is a tool that makes the blank become a part of a specific shape and size under the action of external force. It is 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 and uses a wheel with a cutting edge. The outline shape can separate the blank according to the shape of the contour line, and the inner cavity shape can make the blank obtain the corresponding three-dimensional shape. The mold generally consists of two parts: a movable mold and a fixed mold. The two parts can be separated and 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 withstands the expansion force of the blank and has high requirements for 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. The die-casting body integrates multiple functions. When the casting has side holes or side recesses that are different from the mold opening direction, the mold parts that form the side holes or side recesses need to be made into movable structures. Before the casting is demolded, it is first pulled out, and then the casting is removed from the cavity and the core.
[0003] At present, the core pulling structure of the die-casting mold with cavity pressure adopts a hydraulic core pulling cylinder to drive the slider for core pulling. When the mold is closed, the slider is blocked by the fixed mold wedge to prevent the slider from retreating. If the angle between the ejection direction of the side hole or side recess and the mold opening direction is greater than ninety degrees, it is difficult to arrange the wedge block on the fixed mold side to block the slider, and the slider may retreat, resulting in unqualified casting dimensions and the inability to produce continuously. Summary of the Invention
[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a structure for preventing the slider from retreating obliquely, which has a simple structure and can prevent the slider from retreating due to cylinder factors after the slider enters the mold cavity.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] The cam is secured to the upper and lower ends of the camshafts and is secured to the upper and lower ends of the camshafts with a spring, which is adapted to move the camshafts downwards relative to the front end of the camshaft.
[0007] Furthermore, the right-angled sides at both ends of the latch have 45° chamfers.
[0008] Furthermore, both end surfaces of the mounting seat are provided with limit platforms, and the limit platforms are in sliding contact with the pressing plate for position limiting.
[0009] Furthermore, a guide rod is provided on the mounting seat, a cylinder sensing block is provided on the guide rod, and a slider forward sensing block in contact with the cylinder sensing block is provided on the mold frame.
[0010] The beneficial effects of the utility model include: simple structure, forward push by the oil cylinder, the T-block pushes the pin into the grooves of the pressure plates on both sides, which prevents the obliquely pulled slider from entering the inverted forming position in the mold cavity, and does not cause the slider to retreat due to axial stringing due to the oil cylinder factor, and the slider seat is pressed tightly, which is beneficial to improving the die-casting quality of the mold. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural diagram of the utility model;
[0012] Figure 2 yes Figure 1 Schematic diagram of the bottom structure. DETAILED DESCRIPTION
[0013] The present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.
[0014] A kind of Figure 1-2The illustrated structure for preventing the obliquely withdrawn slider from retreating comprises a cylinder mounting plate 1, a pressure plate 2, and a front limit precision positioning block 3, all mounted on the mold frame. The cylinder mounting plate 1 is provided with a cylinder 4, the front end of the piston rod of the cylinder 4 being connected to a mounting seat 5, which moves back and forth under the drive of the piston rod. There are two pressure plates 2, symmetrically arranged on either side of the mounting seat 5. The two ends of the mounting seat 5 are limited inwardly relative to the pressure plate 2. The two end surfaces of the mounting seat 5 are provided with limit platforms, which are in sliding contact with the pressure plate 2 to limit the position, thereby ensuring that the mounting seat 5 moves in a straight line. Two slider seats 6 are mounted on the front end of the mounting seat 5. The slider seats 6 are provided with obliquely withdrawn sliders 7 that slide obliquely via T-slots or dovetail grooves. The front end of the obliquely withdrawn slider 7 abuts against the front limit precision positioning block 3, thereby causing the obliquely withdrawn slider 7 to move obliquely due to the forward and backward movement of the slider seat 6, and the front end of the obliquely withdrawn slider 7 extends into the mold cavity.
[0015] To prevent the obliquely withdrawn slider 7 from retreating due to loss of pressure in the oil cylinder, the front end of the piston rod of the oil cylinder 4 is connected to a T-shaped head 8, and the mounting seat 5 is provided with a movable groove for accommodating the T-shaped head 8, and latches 9 are slidably provided on the left and right sides of the T-shaped head 8. The pressure plate 2 is provided with a latch limiting groove 10, and the front end of the T-shaped head 8 has a bevel for squeezing the latch 9. When the front end of the piston rod of the oil cylinder 4 presses the latch 9 tightly to drive the mounting seat 5 forward, and when the latch 9 moves to the position of the pin limiting groove 10 on the pressure plates on both sides, the latch 9 is squeezed by the T-shaped head 8 into the pin limiting groove 10, thereby preventing the obliquely withdrawn slider 7 from retreating.
[0016] To facilitate insertion and removal of the latch 9, both ends of the right-angled edge have 45° chamfers. As the cylinder retracts, the T-block follows, and the mounting seat moves backward, allowing the latch to exit the platen slot and retract. The slider is then pulled obliquely out of the mold cavity, creating the undercut molding position.
[0017] In order to accurately control the movement stroke of the piston rod of the oil cylinder, a guide rod 11 is provided on the mounting seat 5, a cylinder sensing block 12 is provided on the guide rod 11, and a slider forward sensing block 13 in contact with the cylinder sensing block 12 is provided on the mold frame.
[0018] The above is a detailed introduction to the technical solutions provided by the embodiments of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.
Claims
1. An anti-backward structure for an obliquely withdrawn slider, characterized in that: The invention comprises an oil cylinder mounting plate (1), a pressure plate (2), and a front limit precision positioning block (3) arranged on a mold frame, wherein an oil cylinder (4) is arranged on the oil cylinder mounting plate (1), and a front end of a piston rod of the oil cylinder (4) is connected to a mounting seat (5), the number of the pressure plates (2) is two, and they are symmetrically arranged on both sides of the mounting seat (5), and the sliding limits at both ends of the mounting seat (5) are located on the opposite inner sides of the pressure plate (2), and a slider seat (6) is installed at the front end of the mounting seat (5), and the slider seat (6) is connected to the front end of the mounting seat (5). The T-slot or dovetail slot is provided with an obliquely withdrawn slider (7) for oblique sliding, the front end of the obliquely withdrawn slider (7) abuts against the front limit precision positioning block (3), the front end of the piston rod of the oil cylinder (4) is connected with a T-head (8), the mounting seat (5) is provided with a movable groove for accommodating the T-head (8), the left and right sides of the T-head (8) are provided with latches (9) for sliding, the pressure plate (2) is provided with a latch limiting groove (10), and the front end of the T-head (8) has an oblique edge for squeezing the latch (9).
2. The anti-backward structure of the obliquely withdrawn slider according to claim 1, characterized in that: The right-angled sides at both ends of the latch (9) have 45° chamfers.
3. The anti-backward structure of the obliquely withdrawn slider according to claim 1, characterized in that: Both end surfaces of the mounting seat (5) are provided with limiting platforms, and the limiting platforms are in sliding contact with the pressing plate (2) for limiting position.
4. The anti-backward structure of the obliquely withdrawn slider according to claim 1, characterized in that: A guide rod (11) is provided on the mounting seat (5), a cylinder sensing block (12) is provided on the guide rod (11), and a slide forward sensing block (13) in contact with the cylinder sensing block (12) is provided on the mold frame.