Forging and pressing pin punching type combined die

Abstract

The utility model relates to the technical field of human body alloy joint production, in particular to a forging and pressing pin punching type combined die which comprises an upper die and a lower die, a containing cavity is formed in the middle of the lower die, two lining tiles attached to each other are arranged in the containing cavity, a cavity used for containing a blank is formed in the middle of the two lining tiles, and the upper die and the lower die are arranged in the cavity. The opposite abutting faces of the lining tiles are provided with air channels, the bottom of the lower die is provided with an ejection device used for lifting the lining tiles, gaps between a product and the die and gaps between the product and the lining tiles are increased, and therefore work efficiency and safety are improved, and the die is simple in structure, convenient to operate, safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of human alloy joint production, in particular to a forging pin punching type combined die. Background Art

[0002] Titanium alloy has the characteristics of high strength, good corrosion resistance, heat resistance, non-toxicity, light weight, and excellent biocompatibility. The elastic modulus of titanium alloy is 55-105GPa, and the yield strength is 100-1000Mpa. It is an ideal metal material for medical and aerospace use. Titanium alloy uses forging dies in the processing process. The existing forging dies heat the blank first, place the blank inside the forging die, and further forge and shape the size of the blank through the forging of the upper and lower dies, making the product more precise and reaching the finished product standard.

[0003] In the processing of titanium alloy T-pins, forging equipment is required to finish the blank. The commonly used forging equipment has a limiting die at the bottom, and forging is performed through the upper die, so that the pin is more in line with the design requirements. However, the pin will fit tightly with the die after forging, and the operating space is small, which makes it difficult to remove the processed product and there are certain processing difficulties. Therefore, this technical solution is proposed for improvement. Utility Model Content

[0004] The utility model aims to overcome the disadvantage of the prior art that titanium alloy T-shaped pins are inconvenient to take out after forging, and provides a forging pin punching type combined die.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model specifically adopts the following technical scheme: a forging pin punching type combined mold, including an upper mold and a lower mold, a receiving cavity is arranged in the middle position of the lower mold, two lining tiles that fit each other are arranged inside the receiving cavity, a cavity for accommodating the blank is arranged in the middle position of the two lining tiles, air channels are arranged on the relative abutting surfaces of the lining tiles, and an ejection device for lifting the lining tiles is arranged at the bottom of the lower mold.

[0006] Furthermore, the accommodating cavity is in the shape of an inverted frustum, and the outer wall of the lining shoe abuts against the interior of the accommodating cavity.

[0007] Furthermore, a through hole is provided at the bottom of the lower mold, and the ejection device includes a push rod arranged inside the through hole, and a driving device is provided at the bottom of the push rod.

[0008] Furthermore, the through hole and the ejector rod are in a T-shape that fits with each other.

[0009] Furthermore, an air intake passage communicating with the airway is arranged inside the push rod, and an inlet of the air intake passage is arranged on a side of the push rod.

[0010] Furthermore, the airways are arranged relatively to each other, and the cross section of the airways is semicircular.

[0011] The beneficial effects of the embodiment of the utility model are as follows: after forging is completed, the driving device is started to make the push rod rise, and at the same time, the push rod inflates the inside of the airway through the air inlet channel. After the gas enters the airway, the gap between the two lining tiles is expanded, so that the gap between the lining tiles and the blank is increased. At the same time, the push rod continues to rise to eject the lining tiles and the blank. Through the design of the airway and the ejection device, the function of automatically separating the lining tiles from the blank after forging is achieved, and the gap between the product and the mold and the lining tiles is increased, thereby improving work efficiency and safety. The structure is simple, the operation is convenient, and it is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0014] Figure 3 This is a schematic diagram of the cross-sectional structure of the lining tile of the utility model;

[0015] In the figure: 1, upper mold; 2, lower mold; 201, ejector pin; 202, air inlet channel; 203, nozzle; 3, lining tile; 301, airway; 4, blank. DETAILED DESCRIPTION

[0016] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0017] See also Figures 1 to 3 The utility model embodiment discloses a device for concentric forging, which mainly includes two parts: an upper die 1 and a lower die 2, wherein the upper die 1 is responsible for providing power during the forging process, and the lower die 2 is responsible for supporting and positioning the blank 4 to be processed.

[0018] An inverted truncated cone-shaped accommodating cavity is provided in the middle position of the lower die 2. This design is conducive to the stable placement of the lining tile 3 and ensures that the blank 4 is subjected to uniform pressure during the forging process. Two lining tiles 3 that fit each other are arranged inside the accommodating cavity. A cavity is provided in the middle position of the two lining tiles 3 for accommodating the blank 4 to be forged.

[0019] The opposite abutting surfaces of the lining 3 are provided with air passages 301, which are arranged opposite to each other and have a semicircular cross section. Since the cross section of the air passages 301 is semicircular, the structural strength of the lining 3 is not affected, and the forging effect is ensured.

[0020] A through hole is provided at the bottom of the lower mold 2 for installing an ejection device, which is composed of a ejector rod 201 and a driving device. The through hole and the ejector rod 201 are of a T-shaped design that cooperates with each other. This design can ensure that the ejector rod 201 moves stably in the through hole to avoid deviation or shaking during the ejection process. At the same time, the T-shaped design can also increase the contact area between the ejector rod 201 and the bottom of the lining 3, thereby improving the stability of the ejection device.

[0021] An air inlet channel 202 connected to the airway 301 is provided inside the push rod 201. The inlet of the air inlet channel 202 is provided on the side of the push rod 201, which is convenient for connecting with an external gas source. After forging is completed, gas can enter the airway 301 through the air inlet channel 202 to assist in separating the lining 3 from the blank 4. A nozzle 203 is installed on the top of the push rod 201. When in the waiting position, after the two linings 3 are closed, the nozzle 203 is inserted into the airway 301 to facilitate ventilation inside the airway 301 and ensure the use effect. A driving device is provided at the bottom of the push rod 201 to drive the push rod 201 to rise or fall. The driving device can be a cylinder, a hydraulic cylinder, etc. The specific selection depends on actual needs and equipment specifications.

[0022] When using this device for concentric forging, first, the set lining 3 needs to be placed inside the accommodating cavity, and then the blank 4 to be forged is placed into the cavity, and then the forging operation is performed, so that the upper die 1 and the lower die 2 are molded together, and the blank 4 is forged. After the forging is completed, the driving device is started again to make the push rod 201 rise, and at the same time, the push rod 201 inflates the air into the airway 301 through the air inlet channel 202. After the gas enters the airway 301, the gap between the two linings 3 is opened, so that the gap between the linings 3 and the blank 4 is increased. At the same time, the push rod 201 continues to rise, and the linings 3 and the blank 4 are ejected, which is convenient for taking out the forged product. The stable positioning and effective forging of the blank 4 are achieved. At the same time, through the design of the airway 301 and the ejection device, the function of automatically separating the lining 3 from the blank 4 after the forging is completed is achieved, thereby improving the work efficiency and safety. The structure is simple, the operation is convenient, and the safety and reliability are high. It has high practical value and promotion prospects.

[0023] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0025] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0026] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A forging pin punching combination die, comprising an upper die (1) and a lower die (2), characterized in that: A receiving cavity is arranged in the middle of the lower mold (2), two mutually fitting lining tiles (3) are arranged inside the receiving cavity, a cavity for receiving a blank (4) is arranged in the middle of the two lining tiles (3), air passages (301) are arranged on the relative abutting surfaces of the lining tiles (3), and an ejection device for lifting the lining tiles (3) is arranged at the bottom of the lower mold (2).

2. The forging pin punching die assembly according to claim 1, characterized in that: The accommodating cavity is in the shape of an inverted truncated cone, and the outer wall of the lining shoe (3) abuts against the interior of the accommodating cavity.

3. The forging pin punching die assembly according to claim 1, characterized in that: The bottom of the lower mold (2) is provided with a through hole, the ejection device comprises a push rod (201) arranged inside the through hole, and the bottom of the push rod (201) is provided with a driving device.

4. The forging pin punching die assembly according to claim 3, characterized in that: The through hole and the push rod (201) are in a T-shape that fits with each other.

5. The forging pin punching die assembly according to claim 3 is characterized in that: An air intake channel (202) communicating with the air passage (301) is arranged inside the push rod (201), and an inlet of the air intake channel (202) is arranged on a side of the push rod (201).

6. The forging pin punching die assembly according to claim 1, characterized in that: The air passages (301) are arranged opposite to each other, and the cross section of the air passages (301) is semicircular.

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