Core-pulling anti-retreating structure

Abstract

The utility model relates to a core-pulling anti-retreating structure which is characterized by comprising an oil cylinder, an oil cylinder meson, a sliding block seat and sliding block pressing strips, the sliding block pressing strips are arranged on the two sides of the sliding block seat, limiting holes are formed in the inner sides of the sliding block pressing strips, the sliding block seat is provided with a sliding groove, the oil cylinder meson is arranged in the sliding groove in a sliding mode, and the oil cylinder meson is arranged in the sliding groove in a sliding mode. Sliding holes are formed in the positions, located on the two sides of the sliding groove, of the sliding block base, anti-retreating pins are arranged in the sliding holes in a sliding mode, and the output end of the oil cylinder is connected with the oil cylinder meson. It can be ensured that the oil cylinder and the sliding block base are stably kept at the preset positions in the forming process, and the retreating phenomenon is effectively prevented. In this way, the problems of burrs, segment differences and the like caused by retreating can be reduced in the forming production process, then the reject ratio is reduced, and the product quality and the production efficiency are improved. The whole working principle is based on the accuracy and stability of mechanical transmission, and smooth proceeding of the forming process is ensured.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to a core-pulling anti-backward structure. Background Technology

[0002] Core-pulling molds are a common type of mold used in industrial production. They are used to form molds with complex structures, especially for internal pulling structures with sequential actions. Special products and special structures require hydraulic cylinder core-pulling structures. In many hydraulic cylinder core-pulling processes, the pressure-holding cylinder retracts during the molding process, resulting in burrs, step differences, and product defects, which seriously affects production quality. This document specifically addresses the issue of preventing burrs and step differences caused by the hydraulic cylinder retracting after pressure holding. Utility Model Content

[0003] To address the aforementioned technical problems, this application provides a core-pulling anti-backward structure, comprising a hydraulic cylinder, a hydraulic cylinder insert, a slider seat, and a slider pressure bar. The slider pressure bar is disposed on both sides of the slider seat, and a limit hole is provided on the inner side of the slider pressure bar. The slider seat is provided with a sliding groove, and the hydraulic cylinder insert is slidably disposed in the sliding groove. The slider seat is provided with sliding holes on both sides of the sliding groove, and anti-backward pins are slidably disposed in the sliding holes. The output end of the hydraulic cylinder is connected to the hydraulic cylinder insert.

[0004] Preferably, it also includes a cylinder seat, wherein a sliding hole is provided in the middle of the cylinder seat, and the output end of the cylinder is connected to the cylinder connector through the sliding hole.

[0005] Preferably, the top of the cylinder is chamfered.

[0006] Preferably, the chamfer angle is between 37° and 45°.

[0007] Preferably, it further includes a limiting strip, one end of which is disposed on the slider seat and the other end of which is disposed on the slider pressure strip, wherein the limiting strip swings at an angle when the slider seat slides.

[0008] Preferably, the minimum swing angle of the limiting strip is 45°. Attached Figure Description

[0009] 1. Hydraulic cylinder; 2. Hydraulic cylinder spacer; 3. Slider seat; 31. Sliding groove; 32. Sliding hole; 4. Slider pressure bar; 41. Limiting hole; 5. Anti-reverse pin; 6. Hydraulic cylinder seat; 61. Sliding hole; 7. Limiting bar.

[0010] Figure 1 This is a schematic diagram of the core-pulling anti-backward structure according to an embodiment of the present utility model.

[0011] Figure 2This is a schematic diagram of the structure of the oil cylinder and slider seat during mold closing according to an embodiment of the present invention.

[0012] Figure 3 This is a schematic diagram of the structure of the oil cylinder and slider seat during mold opening according to an embodiment of the present invention.

[0013] Figure 4 This is a schematic diagram of the slider pressure bar according to an embodiment of the present invention. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of a core-pulling anti-backward structure of this utility model is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit its scope.

[0015] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "center," "longitudinal," "lateral," "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] This application discloses a core-pulling anti-backward structure. Please refer to [link / reference]. Figures 1 to 4The system includes a hydraulic cylinder 1, a hydraulic cylinder insert 2, a slider seat 3, and a slider pressure bar 4. The slider pressure bar 4 is disposed on both sides of the slider seat 3. The inner side of the slider pressure bar 4 is provided with a limit hole 41. The slider seat 3 is provided with a sliding groove 31. The hydraulic cylinder insert 2 is slidably disposed in the sliding groove 31. The slider seat 3 is provided with sliding holes 32 on both sides of the sliding groove 31. Anti-reverse pins 5 are slidably disposed in the sliding holes 32. The output end of the hydraulic cylinder 1 is connected to the hydraulic cylinder insert 2.

[0018] In the above embodiment, during the molding process, when the mold is closed, the hydraulic cylinder 1 operates and reaches the bottom position. At this time, the output end of the hydraulic cylinder 1 pushes the hydraulic cylinder insert 2 forward. As the hydraulic cylinder insert 2 slides forward, its side will press against the anti-reverse pins 5 provided on both sides of the sliding groove 31 of the slider seat 3. As the hydraulic cylinder insert 2 continues to advance, the anti-reverse pins 5 are subjected to pressure and embedded into the limiting holes 41 provided on the inner side of the slider pressure strip 4. A precision fit is formed between the anti-reverse pins 5 and the slider pressure strip 4. This fit structure effectively prevents the slider seat 3 from retracting during the molding process, thereby achieving the anti-reverse effect.

[0019] During the mold opening stage, hydraulic cylinder 1 begins to retract, and its output end no longer applies thrust to hydraulic cylinder insert 2. At this time, the contact pressure between hydraulic cylinder insert 2 and anti-retraction pin 5 disappears, allowing anti-retraction pin 5 to exit from the limiting hole 41. As hydraulic cylinder insert 2 retracts further, it slides within the sliding groove 31 and abuts against the limiting groove on the slider seat 3. Through this abutment action, hydraulic cylinder insert 2 pulls slider seat 3 backward together, realizing the core-pulling and retraction action of slider seat 3.

[0020] This core-pulling anti-backward structure design ensures that the hydraulic cylinder 1 and the slider seat 3 remain stably in their predetermined positions during the molding process, effectively preventing backward movement. This reduces problems such as burrs and unevenness caused by backward movement during molding production, thereby lowering the defect rate and improving product quality and production efficiency. The entire working principle is based on the precision and stability of mechanical transmission, ensuring the smooth progress of the molding process.

[0021] Please see Figures 1 to 4 In another embodiment, a cylinder seat 6 is also included, with a sliding hole 61 in the middle of the cylinder seat 6, and the output end of the cylinder 1 is connected to the cylinder connector 2 through the sliding hole 61.

[0022] In the above embodiment, a sliding hole 61 is provided in the middle of the cylinder seat 6. The sliding hole 61 is designed to precisely guide and support the output shaft of the cylinder 1. When the cylinder 1 starts working, its output shaft is connected to the cylinder insert 2 through the sliding hole 61 in the middle of the cylinder seat 6. This connection method ensures that the output shaft of the cylinder 1 is always precisely guided and supported by the sliding hole 61 during the back-and-forth sliding process, so as not to cause deviation.

[0023] During the molding process, as the hydraulic cylinder 1 is pushed, the output shaft stably transmits force to the hydraulic cylinder 2 through the sliding hole 61, ensuring that the force transmission path is accurate and stable. Similarly, during the mold opening stage, the retraction of the output shaft of the hydraulic cylinder 1 is also precisely guided through the sliding hole 61, avoiding mechanical errors or damage caused by misalignment.

[0024] Please see Figures 1 to 4 In another embodiment, the top of the cylinder mandrel 2 is chamfered.

[0025] In the above embodiment, when the hydraulic cylinder 1 pushes the hydraulic cylinder medial 2 forward to prepare to contact the anti-reverse pin 5, the anti-reverse pin 5 can smoothly slide into the side of the hydraulic cylinder medial 2 along this chamfer because the top of the hydraulic cylinder medial 2 has been chamfered.

[0026] Specifically, as the hydraulic cylinder 2 gradually approaches the anti-reverse pin 5, the anti-reverse pin 5 first contacts the chamfered portion of the hydraulic cylinder 2. As the hydraulic cylinder 2 continues to advance, the anti-reverse pin 5 gradually slides along the chamfer to the side of the hydraulic cylinder 2, and is eventually held in place by the side of the hydraulic cylinder 2, embedding itself into the limiting hole 41 of the slider pressure bar 4.

[0027] This chamfering treatment not only ensures that the anti-reverse pin 5 can smoothly and steadily contact the cylinder medial 2 and embed into the limiting hole 41, but also reduces mechanical impact and wear caused by direct impact, thereby improving the stability and durability of the entire structure.

[0028] Please see Figures 1 to 4 In another embodiment, the chamfer angle is between 37° and 45°.

[0029] In the above embodiment, when the hydraulic cylinder 1 drives the hydraulic cylinder medial 2 to move forward and prepare to contact the anti-reverse pin 5, since the chamfer angle is between 37° and 45°, this angle is neither too steep nor too gentle, which can ensure that when the anti-reverse pin 5 contacts the top of the hydraulic cylinder medial 2, it can smoothly slide into the side of the hydraulic cylinder medial 2 along the chamfer at an appropriate angle and force.

[0030] Please see Figures 1 to 4In another embodiment, a limiting strip 7 is also included, one end of which is disposed on the slider seat 3 and the other end of which is disposed on the slider pressure strip 4. When the slider seat 3 slides, the limiting strip 7 swings at an angle.

[0031] In the above embodiment, one end of the limiting strip 7 is rotatably mounted on the slider seat 3 via a thread, and the other end is rotatably mounted on the slider pressure strip 4, both ends of which can rotate. When the slider seat 3 slides along a predetermined trajectory under the drive of the hydraulic cylinder 2, the limiting strip 7 swings at a moderate angle to ensure that the slider seat 3 does not accidentally detach from the constraint of the slider pressure strip 4 during the sliding process.

[0032] This design not only enhances the stability between the slider seat and the slider pressure strip through physical connection, but also provides a dynamic anti-detachment mechanism through the angular swing of the limit strip, effectively preventing the risk of the slider seat falling off during the sliding process and ensuring the integrity of the structure and the effectiveness of the function.

[0033] Please see Figures 1 to 4 In another embodiment, the minimum swing angle of the limiting strip is 45°.

[0034] In the above embodiments, it is ensured that the slider seat remains within the constraint range of the slider pressure bar during the sliding process, preventing it from detaching.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A core-pulling anti-backward structure, characterized in that, The system includes a hydraulic cylinder, a hydraulic cylinder insert, a slider seat, and a slider pressure bar. The slider pressure bar is disposed on both sides of the slider seat, and a limit hole is provided on the inner side of the slider pressure bar. The slider seat is provided with a sliding groove, and the hydraulic cylinder insert is slidably disposed in the sliding groove. The slider seat is provided with sliding holes on both sides of the sliding groove, and anti-reverse pins are slidably disposed in the sliding holes. The output end of the hydraulic cylinder is connected to the hydraulic cylinder insert.

2. The core-pulling anti-backward structure as described in claim 1, characterized in that: It also includes a cylinder seat, which has a sliding hole in the middle, and the output end of the cylinder is connected to the cylinder connector through the sliding hole.

3. The core-pulling anti-backward structure as described in claim 1, characterized in that: The top of the cylinder is chamfered.

4. The core-pulling anti-backward structure as described in claim 3, characterized in that: The chamfer angle is between 37° and 45°.

5. The core-pulling anti-backward structure as described in claim 1, characterized in that: It also includes a limiting strip, one end of which is disposed on the slider seat and the other end of which is disposed on the slider pressure strip, wherein the limiting strip swings at an angle when the slider seat slides.

6. The core-pulling anti-backward structure as described in claim 5, characterized in that: The minimum swing angle of the limiting strip is 45°.

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