Ejection structure of hot forging die

Abstract

The utility model discloses an ejection structure of a hot forging die and relates to a wrench machining die. An upper forming cavity is formed in the bottom surface of the upper mold; a plurality of telescopic pressing blocks extending out of the bottom face of the upper die through first springs are arranged on the side portion of the upper forming cavity. A lower forming cavity is formed in the top surface of the lower die; a plurality of ejection station grooves are formed in the side part of the lower forming cavity; an ejection sliding block which is arranged in the ejection station groove in an up-down sliding manner and corresponds to the telescopic pressing block is arranged in the ejection station groove; the top face of the ejection sliding block is provided with a supporting face matched with a forge piece, and the tail end of the ejection sliding block is provided with a first inclined face. The front end of the pushing block is provided with a second inclined face matched with the first inclined face, and the supporting face of the ejection sliding block extends out of the ejection station groove through pushing of a second spring on the side portion. And when the telescopic pressing block is pressed downwards, the supporting surface of the ejection sliding block is retracted into the ejection station groove. According to the utility model, the forge piece processing efficiency and safety are improved.

Description

Technical Field

[0001] The utility model relates to a wrench processing die, in particular to an ejection structure of a hot forging die. Background Art

[0002] A tool that makes the blank into a product with 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. Industrial molds have a specific contour or inner cavity shape, and the inner cavity shape is used to make the blank obtain the corresponding three-dimensional shape. Industrial molds generally include two parts: a movable mold and a fixed mold (or a punch and a die), which can be separated or combined. When separated, the product is taken out, and when combined, the blank is injected into the industrial mold cavity for forming.

[0003] A wrench is a commonly used installation and disassembly tool. It is a hand tool that uses the principle of leverage to turn bolts, screws, nuts and other threaded fasteners such as the openings or holes of bolts or nuts. In the wrench manufacturing process, the bar stock heated to a set temperature is placed in the lower die, and the upper die is used to stamp it into a set forging. Subsequently, the required wrench tool is formed through processes such as trimming. After the bar stock is formed in the lower die, it is necessary to manually use specific tools to separate the formed forging from the lower die, which seriously restricts the processing efficiency of the forging. Utility Model Content

[0004] In view of the above problems, the utility model provides an ejection structure of a hot forging die which has a sophisticated structure and improves the demoulding efficiency of forgings.

[0005] The technical solution of the utility model is:

[0006] A hot forging die ejection structure, comprising:

[0007] The upper mold has an upper molding cavity on its bottom surface; the side of the upper molding cavity is provided with a plurality of telescopic pressing blocks extending from the bottom surface of the upper mold through a first spring;

[0008] The lower mold has a lower molding cavity on the top surface; the side of the lower molding cavity is provided with a plurality of ejection station grooves; the ejection station grooves are provided with:

[0009] An ejection slider is slidably arranged in the ejection station slot up and down, corresponding to the telescopic pressing block; the top surface of the ejection slider is provided with a supporting surface adapted to the forging, and the tail end is provided with an inclined surface;

[0010] The push block has a second inclined surface matched with the first inclined surface at the front end. The support surface of the ejection slider is extended out of the ejection station slot by the push of the second spring on the side. When the telescopic pressing block is pressed down, the support surface of the ejection slider is received in the ejection station slot.

[0011] Specifically, the elastic force of the first spring is greater than the elastic force of the second spring.

[0012] Specifically, a plurality of vertical accommodating cavities are provided in the upper mold;

[0013] The cross section of the telescopic pressing block is T-shaped and is confined in the vertical accommodating cavity. The bottom of the telescopic pressing block is extended out of the vertical accommodating cavity by the elastic force of the first spring.

[0014] Specifically, the front end of the ejection slider is provided with a support portion extending downward toward the molding cavity;

[0015] The top surface of the support portion is a support surface for supporting the forging;

[0016] The side of the ejection station groove is provided with a sunken step groove adapted to the support part.

[0017] Specifically, the angle between the first inclined plane and the horizontal plane is 45°.

[0018] Specifically, the inclined surface 1 is provided with a T-shaped groove;

[0019] The second inclined surface is provided with a T-shaped platform matched with the T-shaped groove.

[0020] Specifically, the side of the lower mold is provided with a detachably fixedly connected supporting U-shaped seat;

[0021] The tail of the pushing block is provided with a detachably fixed extension rod, and the tail of the extension rod passes through the supporting U-shaped seat;

[0022] The second spring is located in the supporting U-shaped seat and is sleeved on the extension rod. The elastic force of the second spring pushes the push block to move in the direction of ejecting the sliding block.

[0023] Specifically, a positioning block extending upward is provided on the top surface of the lower mold near the edge;

[0024] The bottom surface of the upper mold is provided with a positioning groove adapted thereto.

[0025] The utility model includes an upper die, a lower die, an ejector slider and a push block. The heated bar material is placed in the lower forming cavity in advance. When the upper die moves downward to form, the telescopic pressing block of the upper die first contacts the top surface of the ejector slider of the lower die. Since the elastic force of the first spring is greater than the elastic force of the second spring, the ejector slider that was originally higher than the surface of the lower die will be flattened under this action. The ejector slider and the push block realize the direction conversion of the force through a 45-degree inclined surface. The inclined surfaces are connected by T-slots to ensure that the ejector slider will not fall off, thereby improving the stability of the mold; after the bar material is forged and formed by the mold, the excess flash will extend outward, and the flash at both ends of the forging will cover the supporting surface of the ejector slider; when the upper die and the lower die are separated, the ejector slider will eject the forging upward under the action of the second spring force, so that the forging is separated from the mold cavity to achieve the ejection effect, thereby improving the processing efficiency and safety of the forging. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the utility model (the upper mold is in a state of bottom surface facing upward);

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure when the lower molding cavity and the ejection slide block are located in the lower mold;

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the forging after forming;

[0029] Figure 4 It is a schematic diagram of the cross-sectional structure of the connection state between the lower molding cavity and the ejection slider;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the connection between the lower molding cavity and the ejection slider;

[0031] In the figure, 100 is the upper mold, 110 is the upper molding cavity, 120 is the telescopic pressing block,

[0032] 200 is the lower mold, 210 is the lower molding cavity, 220 is the ejection slider, 221 is the support portion, 230 is the push block, 231 is the second spring, 232 is the extension rod, 240 is the support U-shaped seat,

[0033] 300 is forging. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Reference below Figure 1-5 Describe the utility model;

[0038] A hot forging die ejection structure, comprising:

[0039] The upper mold 100 has an upper molding cavity 110 on its bottom surface; the side of the upper molding cavity 110 is provided with a plurality of telescopic pressing blocks 120 extending from the bottom surface of the upper mold through a first spring;

[0040] The lower mold 200 has a lower molding cavity 210 on its top surface. The side of the lower molding cavity 210 is provided with a plurality of ejection station grooves. The ejection station grooves are provided with:

[0041] The ejection slider 220 is slidably disposed in the ejection station slot, corresponding to the telescopic pressing block 120; the top surface of the ejection slider 220 is provided with a supporting surface adapted to the forging 300, and the tail end is provided with an inclined surface 1;

[0042] The push block 230 has a second inclined surface matched with the first inclined surface at its front end. The support surface of the ejection slider 220 is extended out of the ejection station groove by the push of the second spring 231 on the side. When the telescopic pressing block 120 is pressed down, the support surface of the ejection slider 220 is received in the ejection station groove.

[0043] The elastic force of the first spring is greater than the elastic force of the second spring.

[0044] The upper die 100 further describes:

[0045] The upper mold 100 is provided with a plurality of vertical accommodating cavities;

[0046] The cross-section of the telescopic pressing block 120 is T-shaped and is confined in the vertical accommodating cavity. The bottom of the telescopic pressing block 120 is extended out of the vertical accommodating cavity by the elastic force of the first spring. When the telescopic pressing block 120 contacts the ejection slider 220, the ejection slider 220 overcomes the elastic force of the second spring 231 and moves downward in advance; after the ejection slider 220 drops into place, the telescopic pressing block 120 overcomes the elastic force of the first spring and moves into the vertical accommodating cavity.

[0047] The lower die 200 is further described:

[0048] The front end of the ejection slider 220 is provided with a support portion 221 extending downward toward the molding cavity 210;

[0049] The top surface of the support portion 221 is a support surface for supporting the forging 300;

[0050] The side of the ejection station groove is provided with a sunken step groove adapted to the support portion 221 .

[0051] The angle between the inclined plane 1 and the horizontal plane is 45°.

[0052] The first inclined surface is provided with a T-shaped groove;

[0053] The second inclined surface is provided with a T-shaped platform adapted to the T-shaped slot, so as to improve the stability when the ejection slider 220 is connected to the push block 230 .

[0054] The side of the lower mold 200 is provided with a detachably fixed support U-shaped seat 240;

[0055] The rear end of the push block 230 is provided with a detachably fixed extension rod 232, and the rear end of the extension rod 232 passes through the support U-shaped seat 240; the extension rod 232 and the support U-shaped seat 240 are in clearance fit;

[0056] The second spring 231 is located in the supporting U-shaped seat 240 and is sleeved on the extension rod 232 . The elastic force of the second spring 231 pushes the pushing block 230 to move toward the ejecting slider 220 .

[0057] A positioning block extending upward is provided on the top surface of the lower mold 200 near the edge;

[0058] The bottom surface of the upper mold 100 is provided with a positioning groove adapted thereto, so as to improve the stability and reliability when the upper and lower molds are clamped.

[0059] Before stamping, the heated bar stock is placed in the lower molding cavity 210. When the upper mold 100 moves downward to form, the telescopic pressing block 120 of the upper mold 100 first contacts the top surface of the ejector slider 220 of the lower mold 200. Since the elastic force of the first spring is greater than the elastic force of the second spring 231, the ejector slider 220 that was originally higher than the surface of the lower mold 200 will be flattened. The ejector slider 220 and the push block 230 are connected by a 45-degree inclined surface to achieve force direction conversion. The inclined surfaces are connected by T-slots to ensure that the ejector slider 220 will not fall off and improve the stability of the mold. After the bar stock is forged by the mold, the excess flash will extend outward, such as Figure 3 As shown, the flash at both ends of the forging 300 will cover the supporting surface of the ejector slide 220; when the upper mold 100 and the lower mold 200 are separated, the ejector slide 220 will eject the forging 300 upward under the action of the second spring 231, so that the forging 300 is separated from the mold cavity to achieve the ejection effect.

[0060] Regarding the contents disclosed in this case, there are a few points that need to be explained:

[0061] (1) The drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case. Other structures can refer to the general design;

[0062] (2) In the absence of conflict, the embodiments and features of the embodiments disclosed in this case may be combined with each other to obtain new embodiments;

[0063] The above are only specific implementation methods disclosed in this case, but the protection scope of the present disclosure is not limited thereto. The protection scope disclosed in this case should be based on the protection scope of the claims.

Claims

1. A hot forging die ejection structure, characterized in that: include: An upper mold (100) is provided with an upper molding cavity (110) on its bottom surface; a plurality of telescopic pressing blocks (120) are provided on the side of the upper molding cavity (110) and extend from the bottom surface of the upper mold via a first spring; The lower mold (200) has a lower molding cavity (210) on its top surface; a plurality of ejection station grooves are provided on the side of the lower molding cavity (210); and the ejection station grooves are provided with: An ejection slider (220) is slidably disposed in the ejection station slot up and down, corresponding to the telescopic pressing block (120); a support surface adapted to the forging (300) is provided on the top surface of the ejection slider (220), and a sloped surface 1 is provided at the rear end; The push block (230) has a second inclined surface matched with the first inclined surface at its front end, and the support surface of the ejection slider (220) is extended out from the ejection station slot by the push of a second spring (231) on the side; when the telescopic pressing block (120) is pressed downward, the support surface of the ejection slider (220) is retracted into the ejection station slot.

2. The ejection structure of a hot forging die according to claim 1, characterized in that: The elastic force of the first spring is greater than the elastic force of the second spring.

3. The ejection structure of a hot forging die according to claim 1 or 2, characterized in that: The upper mold (100) is provided with a plurality of vertical accommodating cavities; The cross-section of the telescopic pressing block (120) is T-shaped and is confined in the vertical accommodating cavity. The bottom of the telescopic pressing block (120) is extended out of the vertical accommodating cavity through the elastic force of the first spring.

4. The ejection structure of a hot forging die according to claim 1, characterized in that: The front end of the ejection slider (220) is provided with a support portion (221) extending downward in the direction of the molding cavity (210); The top surface of the support portion (221) is a support surface for supporting the forging (300); A sunken step groove adapted to the support portion (221) is provided on the side of the ejection station groove.

5. The ejection structure of a hot forging die according to claim 1 or 4, characterized in that: The angle between the inclined plane 1 and the horizontal plane is 45°.

6. The ejection structure of a hot forging die according to claim 1, characterized in that: The first inclined surface is provided with a T-shaped groove; The second inclined surface is provided with a T-shaped platform matched with the T-shaped groove.

7. The ejection structure of a hot forging die according to claim 1, characterized in that: A detachably fixedly connected supporting U-shaped seat (240) is provided on the side of the lower mold (200); The rear portion of the pushing block (230) is provided with a detachably fixedly connected extension rod (232), and the rear portion of the extension rod (232) passes through the supporting U-shaped seat (240); The second spring (231) is located in the supporting U-shaped seat (240) and is sleeved on the extension rod (232). The elastic force of the second spring (231) pushes the push block (230) to move in the direction of the ejection slider (220).

8. The ejection structure of a hot forging die according to claim 1, characterized in that: A positioning block extending upward is provided on the top surface of the lower mold (200) near the edge; The bottom surface of the upper mold (100) is provided with a positioning groove adapted thereto.

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