Adjustable ejector core tool

Abstract

The utility model is applied to the field of casting cold core shooting molds, and particularly relates to a core ejecting tool. The utility model provides an adjustable ejector core tool which solves the problems that in the prior art, an ejector rod is difficult to assemble, maintain and replace. The adjustable ejector core tool comprises a base, an ejector rod, a connecting assembly and an ejector plate, the ejector rod is movably connected with the base, the ejector rod can move up and down along the base, and the base is fixedly connected with the ejector plate through the connecting assembly. The device is simple and reliable in structure, convenient to operate and capable of reducing the installation difficulty of the ejector rod and improving the installation efficiency of the ejector rod.

Description

Technical Field

[0001] The utility model is applied to the field of casting cold-shooting core molds, and particularly relates to an adjustable core ejector tooling. Background Art

[0002] Currently, universal ejector pins are directly formed from bars, have simple structures, and have limitations in use.

[0003] Due to the irregular nature of the mold structure, the specifications and heights of the ejector pins vary greatly, making the design and production process time-consuming and prone to problems such as overproduction and omissions. Due to the high precision required for sand cores, the height of the ejector pins must be guaranteed during production.

[0004] Because the mold's dimensions are both greater than 2 meters long and wide, the ejector pin must be installed from below. This process is difficult, time-consuming, and dangerous (operators must be working from the bottom of the mold). If the ejector pin becomes worn or damaged and requires repair or replacement, it must also be removed from below, a difficult operation.

[0005] When the ejector pin wears during mold use or the mold structure is modified, causing the ejector pin height to need to be modified, the ejector pin is easily deformed during additive welding or secondary processing, making simultaneous modifications impossible and often requiring a re-manufacture. The production of the integral ejector pin requires turning a rod with a diameter larger than the maximum diameter of the ejector base. For example, if the ejector pin diameter is required to be 32mm, but its base needs to be 38mm, then the rod diameter must be at least 40mm. This requires a large amount of turning for the entire ejector pin, high raw material costs, and long heat treatment time for the rod. This results in a long ejector production cycle and high costs. Utility Model Content

[0006] The utility model provides an adjustable core ejector tool, which solves the problems in the prior art that ejector rods are difficult to assemble, repair and replace.

[0007] The purpose of the utility model is achieved as follows: an adjustable top core tooling, the adjustable top core tooling includes a base, a top rod, a connecting assembly, and a top plate, the top rod is movably connected to the base, the top rod can move up and down along the base, and the base and the top plate are fixedly connected through the connecting assembly.

[0008] In one embodiment, the push rod is provided with a groove, the inner wall of the groove is provided with a thread, and the groove is movably connected to the base through the thread.

[0009] In one embodiment, a thread is provided on the outer wall of the base.

[0010] In one embodiment, the push rod is provided with a groove, and the inner wall of the groove is smooth.

[0011] In one embodiment, a sleeve is provided on the base, a thread is provided on the inner wall of the sleeve, and the sleeve is threadedly connected to the base.

[0012] In one embodiment, the connecting assembly includes a baffle and bolts, and the base is fixedly mounted on the top plate through the baffle and the bolts.

[0013] This device has a simple and reliable structure and is easy to operate. It can reduce the difficulty of installing the ejector pin, improve the efficiency of installing the ejector pin, and save more than 20% of the mold assembly time. At the same time, the ejector pin is height-adjustable, which can meet the needs of a variety of ejector pins within the adjustable range, reducing the types of ejector pin designs and manufacturing specifications, reducing the difficulty and cost of manufacturing, reducing the difficulty of repairing and replacing the ejector pin, saving repair and replacement time, and improving mold maintenance efficiency. The ejector pin installation method is adjusted to be installed from top to bottom, which solves the disadvantage of the original installation from below, which has safety hazards, and saves materials: taking a 32mm diameter, 500mm long ejector pin as an example, the original manufacturing method is to manufacture the base and the ejector pin as a whole. The base has a large diameter, and the overall ejector pin needs to be machined from a rod with a diameter greater than 40mm. After the modification, the base and the ejector pin are manufactured separately, and only a rod with a diameter slightly greater than 32 is required, saving about 35% of raw materials, while also saving processing resources and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the use of the adjustable core-lift tooling;

[0015] Figure 2 Schematic diagram of the structure of the adjustable core tooling

[0016] 100-mold body, 200-lower top plate, 300-adjustable top core tooling, 310-top rod, 320-base, 330-top plate, 340-baffle, 341-bolt, 400-mold bracket. DETAILED DESCRIPTION

[0017] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0018] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "bottom end," "top end," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] An adjustable core-lift tooling includes a base 320, a push rod 310, a connecting assembly, and a top plate 330. The push rod 310 is movably connected to the base 320. The push rod 310 can move up and down along the base 320. The base 320 and the top plate 330 are fixedly connected via the connecting assembly.

[0021] Specifically, the top rod 310 is provided with a groove, the inner wall of the groove is provided with a thread, the groove is movably connected to the base 320 through a thread, the outer wall of the base 320 is provided with a thread, the top rod 310 is moved up and down along the base 320 through the thread to adjust the position of the top rod 310, and the connecting assembly includes a baffle 340 and a bolt 341, and the base 320 is fixedly installed on the top plate 330 through the baffle 340 and the bolt 341.

[0022] In one embodiment, the outer wall of the base 320 is provided with threads. The push rod 310 is provided with a groove with a smooth inner wall. The base 320 is provided with a sleeve with a threaded inner wall. The sleeve is threadedly connected to the base. The push rod 310 can be lifted by the threads of the sleeve and the base. The sleeve is raised or lowered on the base 320 by rotating the threads. After the push rod 310 is adjusted to the appropriate height, the sleeve is tightened to fix the position of the push rod 310.

[0023] To further illustrate the technical solution of the present application, the use process of the adjustable core tooling is described in detail herein. First, the adjustable core tooling is assembled. Specifically, the base 320 is fixedly assembled on the lower top plate 200, and the base is fixed with a baffle 340 and a bolt 341. The ejector rod 310 is installed downward along the base 320 from above. The sleeve is located below the ejector rod and is used to fix the position of the ejector rod. The base is assembled upward from the bottom of the calibration, and a baffle is used on the back to prevent the ejector rod from falling. The baffle is fixed to the top plate with a fastening bolt. At this point, the adjustable ejector rod is installed and can be used for normal mold closing.

[0024] The specific use process of the adjustable core ejector is as follows: the adjustable core ejector is arranged between the mold body 100 and the lower top plate 200. The lower top plate 200 can drive the adjustable core ejector to move up and down through the lifting mechanism located below it. When there is a sand core in the mold body 100, the ejector rod 310 of the adjustable core ejector abuts against the sand core. As the height of the ejector rod 310 is adjusted, the sand core is ejected from the mold body 100. Specifically, the specifications and quantity of the ejector rod 310 are determined based on the adjustable height range of the ejector rod and the required height of the mold, as well as the ejector rod diameter matching the mold requirements. The base 320 is installed on the lower top plate 200 through the baffle 340 and the bolt 341. The base 320 is installed from bottom to top. The lower end of the base 320 is designed with a limit and anti-rotation structure to fix the position of the base. Furthermore, insert the ejector pin 310 from the top of the mold body 100 downward through the ejector pin hole, align the ejector pin 310 with the base 320 and install it. After the installation is completed, rotate the ejector pin 310 to adjust the height of the ejector pin 310. After the height of the ejector pin 310 is determined, fix the position of the ejector pin 310. After the installation is completed, install the mold body 100 and the mold bracket 400. The mold body 100 is seated on the mold bracket 400. The mold assembly is completed and can be used normally.

[0025] This device has a simple and reliable structure and is easy to operate. It can reduce the difficulty of installing the ejector pin, improve the efficiency of installing the ejector pin, and save more than 20% of the mold assembly time. At the same time, the ejector pin is height-adjustable, which can meet the needs of a variety of ejector pins within the adjustable range, reducing the types of ejector pin designs and manufacturing specifications, reducing the difficulty and cost of manufacturing, reducing the difficulty of repairing and replacing the ejector pin, saving repair and replacement time, and improving mold maintenance efficiency. The ejector pin installation method is adjusted to be installed from top to bottom, which solves the disadvantage of the original installation from below, which has safety hazards, and saves materials: taking a 32mm diameter, 500mm long ejector pin as an example, the original manufacturing method is to manufacture the base and the ejector pin as a whole. The base has a large diameter, and the overall ejector pin needs to be machined from a rod with a diameter greater than 40mm. After the modification, the base and the ejector pin are manufactured separately, and only a rod with a diameter slightly greater than 32mm is required, saving about 35% of raw materials, while also saving processing resources and time.

[0026] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0027] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. An adjustable core tooling, characterized in that: The adjustable core-lift tooling includes a base, a push rod, a connecting assembly, and a top plate. The push rod is movably connected to the base and can move up and down along the base. The base and the top plate are fixedly connected via the connecting assembly.

2. The adjustable core-lift tooling according to claim 1, characterized in that: The push rod is provided with a groove, the inner wall of the groove is provided with a thread, and the groove is movably connected to the base through the thread.

3. The adjustable core-lift tooling according to claim 1, characterized in that: The outer wall of the base is provided with threads.

4. The adjustable core-lift tooling according to claim 3, characterized in that: The top rod is provided with a groove, and the inner wall of the groove is smooth.

5. The adjustable core-lift tooling according to claim 4, characterized in that: A sleeve is provided on the base, a thread is provided on the inner wall of the sleeve, and the sleeve is threadedly connected to the base.

6. The adjustable core-lift tooling according to claim 1, characterized in that: The connecting assembly includes a baffle and bolts, and the base is fixedly mounted on the top plate through the baffle and the bolts.

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