CN221018544U - A spring fixing structure for upper die of machine tool parts - Google Patents

Abstract

The present application discloses a spring fixing structure for an upper die of a machine tool part, including an upper die and a lower die, including a support, a fixed plate, a core-pulling movable block, a spring rod, a spring, a reset movable block, and a cylinder. The two ends of the fixed plate are fixedly connected to the lower die through the support. A plurality of spring rods are obliquely arranged on the fixed plate, and each spring rod sleeve is provided with a spring. There are a plurality of core-pulling movable blocks, and they are located below the fixed plate. Each core-pulling movable block is fixedly connected to at least one spring rod. A reset movable block is arranged on one side of each core-pulling movable block. A cylinder is fixedly connected to the lower die, and the telescopic end of the cylinder is fixedly connected to the reset movable block. The present application adopts a core-pulling structure composed of a movable block and a spring structure and a cylinder reset structure. The core is pulled by the spring structure, and the cylinder structure resets the movable block and prevents the movable block from retreating during the molding process, so as to realize the core-pulling of the movable block obliquely upwards, and at the same time avoids the situation that there is insufficient space on the upper part of the molding machine and the cylinder core-pulling cannot be directly adopted.

Description

A spring fixing structure for upper die of machine tool parts

Technical Field

The present application relates to the technical field of lost foam molds, and in particular to a spring fixing structure for a mold on a machine tool part.

Background technique

The lost foam mold is a mold used for casting. It is made of combustible materials or high-temperature molten molding materials. After casting, there is no need to disassemble or clean the mold because the mold material will evaporate or burn under high temperature conditions, leaving a hollow casting inside.

In the process of making lost foam, a core pulling structure is used. If the machine tool product is large, the undercut part needs to be core pulled obliquely upward, but there is not enough space on the top of the molding machine, and the cylinder core pulling cannot be used directly.

Summary of the invention

The purpose of the present application is to provide a spring fixing structure for the upper mold of a machine tool part in order to solve the above-mentioned problem. The core pulling structure composed of a movable block and a spring structure and a cylinder reset structure are adopted. The core is pulled out by the spring structure, and the cylinder structure resets the movable block and prevents the movable block from retreating during the molding process, thereby realizing the core pulling of the movable block obliquely upward, and at the same time avoiding the situation where there is insufficient space on the upper part of the molding machine and the cylinder core pulling cannot be directly adopted.

This application achieves the above objectives through the following technical solutions:

A spring fixing structure for an upper die of a machine tool part comprises an upper die and a lower die, comprising a support, a fixed plate, a core pulling block, a spring rod, a spring, a reset block, and a cylinder. Both ends of the fixed plate are fixedly connected to the lower die through the support. A plurality of spring rods are obliquely arranged on the fixed plate, each spring rod sleeve is provided with a spring. There are a plurality of core pulling blocks, which are located below the fixed plate. Each core pulling block is fixedly connected to at least one spring rod. A reset block is arranged on one side of each core pulling block. A cylinder is fixedly connected to the lower die, and the telescopic end of the cylinder is fixedly connected to the reset block.

Preferably, there are three core-pulling blocks.

Preferably, a slideway is fixedly provided on the lower die and slidably cooperates with the reset block.

Preferably, one end of the reset block facing the core-pulling block has a slope matching the core-pulling block.

Preferably, each core-pulling piece is fixedly connected to four spring rods.

Compared with the prior art, the present application adopts a core pulling structure composed of a core pulling block and a spring structure and a reset structure composed of a cylinder and a reset block. The cylinder pushes the reset block, and then the core pulling block is pushed to move downward at an angle through the reset block, while preventing the block from retreating during the molding process. After molding, the cylinder is retracted, the reset block is retracted, and the spring structure restores the thrust to push the core pulling block to move obliquely upward, while avoiding the situation where there is insufficient space above the molding machine and the cylinder core pulling cannot be directly used.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present application but do not constitute a limitation to the present application. In the accompanying drawings:

FIG1 is a schematic diagram of the lower mold structure of the present application;

FIG2 is a schematic diagram of the upper mold structure of the present application;

FIG3 is a schematic diagram of the core-pulling movable block structure of the present application;

FIG. 4 is a schematic diagram of the reset movable block structure of the present application.

The following are the descriptions of the reference numerals:

1. Upper die; 2. Lower die; 3. Support; 4. Fixed plate; 5. Core-pulling block; 6. Spring rod; 7. Spring; 8. Reset block; 9. Cylinder; 10. Slide; 11. Inclined surface.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on FIG. 1 and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

As shown in Figures 1-4, a spring fixing structure for the upper mold of a machine tool part includes an upper mold 1 and a lower mold 2, including a support 3, a fixed plate 4, a core pulling piece 5, a spring rod 6, a spring 7, a reset piece 8, and a cylinder 9. Both ends of the fixed plate 4 are fixedly connected to the lower mold 2 through the support 3, so that the fixed plate 4 can support the sliding of the spring rod 6. A plurality of spring rods 6 are obliquely arranged on the fixed plate 4, and each spring rod 6 is sleeved with a spring 7. There are multiple core pulling pieces 5, and they are located below the fixed plate 4. Each core pulling piece 5 is fixedly connected to at least one spring rod 6. The first end of the spring rod 6 is a large head end with a limit spring 7 to prevent it from falling off. The second end of the spring rod 6 passes through the fixed plate 4 and is connected to the core pulling piece 5. A reset piece 8 is arranged on one side of each core pulling piece 5, and the spring rod 6 is in a position to avoid the reset piece 8. A cylinder 9 is fixedly connected to the lower mold 2, and the telescopic end of the cylinder 9 is fixedly connected to the reset piece 8.

Preferably, there are three core-pulling blocks 5, and the concave structure of the lost foam is realized by the core-pulling blocks 5.

Preferably, a slideway 10 is fixedly provided on the lower mold 2 and slidably cooperates with the reset block 8. The slideway 10 assists the reset block 8 in sliding and avoiding deviation.

Preferably, the end of the reset block 8 facing the core pulling block 5 has a slope 11 matching the core pulling block 5, so that the slope 11 of the reset block 8 increases the area of contact with the core pulling block 5, and the reset block 8 stably pushes the core pulling block 5.

Preferably, each core-pulling movable block 5 is fixedly connected to four spring rods 6, so that the spring rods 6 cooperate with the springs 7 to drive the core-pulling movable block 5 to move obliquely upward to complete the core pulling.

In the above structure, the upper mold 1 and the lower mold 2 are combined to form a molding cavity, and the cylinder 9 is extended to push the reset block 8 to move, so that the reset block 8 pushes the core-pulling block 5 to move obliquely downward, so that the core-pulling block 5 is reset. At the same time, the core-pulling block 5 pulls the spring rod 6 to compress the spring 7 on the fixed plate 4, and then fills the molding cavity. After molding, the cylinder 9 contracts and drives the reset block 8 to return to its original position. Then the spring 7 restores the elastic force to push the spring rod 6 to deflect on the fixed plate 4, so that the spring rod 6 drives the core-pulling block 5 to move obliquely upward to complete the core pulling. By pulling the core obliquely upward, the situation that there is insufficient space on the upper part of the molding machine and the cylinder core pulling cannot be directly used is avoided.

The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which are within the scope of the present application to be protected. The scope of protection claimed in the present application is defined by the attached claims and their equivalents.

Claims (5)

1. The utility model provides a structure is decided to mould spring on lathe spare, includes mould (1) and lower mould (2), its characterized in that: including support (3), fixed plate (4), loose core loose piece (5), spring bar (6), spring (7), loose core loose piece (8), cylinder (9), fixed plate (4) both ends are through support (3) and lower mould (2) fixed connection, the slope sets up many spring bar (6) on fixed plate (4), every spring bar (6) cover is equipped with spring (7), loose core loose piece (5) are a plurality of to be located the below of fixed plate (4), every loose core loose piece (5) at least with a spring bar (6) fixed connection, one side of every loose core loose piece (5) all is provided with loose core loose piece (8), fixedly connected with cylinder (9) on lower mould (2) to cylinder (9) flexible end and loose core loose piece (8) fixed connection.

2. The machine tool part upper die spring defining structure according to claim 1, wherein: the number of the loose core movable blocks (5) is three.

3. The machine tool part upper die spring defining structure according to claim 1, wherein: the lower die (2) is fixedly provided with a slideway (10) which is in sliding fit with the reset movable block (8).

4. A machine tool part upper die spring defining structure according to any one of claims 1 to 3, wherein: one end of the reset movable block (8) facing the loose core movable block (5) is provided with an inclined plane (11) matched with the loose core movable block (5).

5. The machine tool part upper die spring defining structure according to claim 1, wherein: each loose core movable block (5) is fixedly connected with four spring rods (6).