Automobile steering arm forging die convenient to demould

Abstract

The invention provides an automobile steering arm forging die convenient to demold, and relates to the field of forging equipment. The lower die base body is of a rectangular block structure made of hot work die steel. An upper die body is arranged on the upper portion of the lower die base body. The upper die body is of a rectangular block structure made of hot work die steel. Four positioning holes are formed in the top end surface of the upper mold main body in a rectangular array manner in a penetrating manner; the top end face of the lower die base body is fixedly connected with four positioning columns in a rectangular array shape. And the four positioning columns are respectively arranged in the four positioning holes. In the mold opening process, along with movement of the upper mold body, air in the telescopic air bag is injected into the air blowing frame through the air conveying pipe through a series of transmission, and the air is blown to the lower mold cavity and the demolded automobile steering arm through the air blowing frame. The problem that operation is tedious when a worker cleans oxide skin attached to the automobile steering arm and a mold after demolding is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of forging equipment, and particularly relates to a forging die for an automotive steering arm that is convenient for demoulding. Background Art

[0002] During the production of automotive steering arms, in order to accurately control the shape and size of the steering arms and achieve precise forming of the automotive steering arms to ensure the accuracy and consistency of the products, forging dies are usually used to forge the automotive steering arms. Existing automotive steering arms generally consist of an upper die, a lower die, an upper die cavity, and a lower die cavity.

[0003] For example: The utility model patent with the application number CN202222934320.7 discloses a forging die for an automotive steering arm, which specifically includes a forging die body and an injection molding frame. The injection molding frame is slidably connected to the top of the forging die body. By setting a limiting component in the present invention, the limiting component performs a limiting clamping on the injection molding frame, ensuring the use of the injection molding frame. When taking materials, the injection molding frame can be jacked up through a material taking mechanism, and then the injection molding frame can be taken out, thereby achieving the effect of assisting manual material taking and solving the problem that when forging an automotive steering arm with a forging die, the injection molding frame needs to be installed inside the forging die body first. After the automotive steering arm inside the injection molding frame is formed, the forged and formed automotive steering arm needs to be taken out. Since the bottom of the forging die does not have a convenient material taking structure, other tools need to be used manually for material taking, which will waste time and thus reduce the production efficiency of the forging die, achieving the effect of assisting manual material taking.

[0004] However, during the forging process of existing automotive steering arm forging dies for automotive steering arms, both the die and the blank are in a high-temperature state. Although the temperature will decrease during demoulding, it is still in a relatively high temperature range. Under such high-temperature conditions, the metal on the surface of the die contacts oxygen in the air and is prone to oxidation reaction to form oxide scales. In order to prevent these oxide scales from affecting the quality of the automotive steering arm and also to prevent them from affecting the subsequent forging of the automotive steering arm, it is usually necessary for workers to clean the oxide scales attached to the automotive steering arm and the die after demoulding. The operation is relatively cumbersome and inconvenient to use. Summary of the Invention

[0005] In view of this, the present invention provides a forging die for an automotive steering arm that is easy to demold, which has a blowing rack that can automatically clean the scale during the demolding process. During the mold opening process, as the upper mold body moves, it will drive the connecting rack to move. As the connecting rack moves, it will drive the transmission rack to move. As the transmission rack moves, it will drive the transmission gear meshing with it to rotate. As the transmission gear rotates, it will drive the fixed rotating shaft to rotate. By the rotation of the fixed rotating shaft, it will drive the control cam to rotate. As the control cam rotates, it will intermittently squeeze the control pressure plate, causing the control pressure plate to reciprocate under the action of the elastic potential energy of the connecting spring. During the reciprocating sliding of the control pressure plate, it will intermittently squeeze the telescopic airbag, causing the telescopic airbag to inject the air inside through the air pipe into the blowing rack, and the blowing rack will blow the air into the lower mold cavity and the demolded automotive steering arm, cleaning the scale while assisting in demolding.

[0006] The present invention provides the purpose and effect of a forging die for an automotive steering arm that is easy to demold, specifically including: a lower die base body; the lower die base body is a rectangular block structure made of hot work die steel; an upper mold body is arranged on the upper part of the lower die base body; the upper mold body is a rectangular block structure made of hot work die steel; four positioning holes are penetrated through the top end surface of the upper mold body in a rectangular array; four positioning columns are fixedly connected to the top end surface of the lower die base body in a rectangular array; the four positioning columns are respectively arranged in the four positioning holes; two lower mold cavities are symmetrically opened on the top end surface of the lower die base body; two upper mold cavities are symmetrically opened on the bottom end surface of the upper mold body; the two upper mold cavities are respectively aligned with the positions of the two lower mold cavities; two blowing racks are symmetrically fixedly connected to the outside of the lower die base body; the air outlets of the two blowing racks are respectively aligned with the positions of the two lower mold cavities; two mounting boxes are symmetrically fixedly connected to the outside of the lower die base body; a connecting box is fixedly connected to the top end surface of each of the two mounting boxes.

[0007] Further, two groups of fixed blocks are symmetrically fixedly connected to the bottom end surface of the upper mold body; a group of first control racks are fixedly connected to the bottom end surfaces of the two groups of fixed blocks; the two groups of first control racks are symmetrically slidably connected in the lower die base body; two groups of first control gears are symmetrically rotatably connected in the lower die base body; the two groups of first control gears are respectively meshed with the two groups of first control racks.

[0008] Further, a group of second control gears are meshed on the inner sides of the two groups of first control gears; a group of second control racks are meshed on the inner sides of the two groups of second control gears; the two groups of second control racks are both slidably connected in the lower die base body.

[0009] Furthermore, a set of connecting sliding frames are fixedly connected to the bottom end faces of the two sets of the second control racks; a set of connecting columns are fixedly connected to the inner sides of the two sets of connecting sliding frames; the two sets of connecting columns are slidably connected in the main body of the lower die base; a set of demolding top plates are fixedly connected to the top end faces of the two sets of connecting columns; the two sets of demolding top plates are respectively aligned with the positions of the two sets of lower die cavities.

[0010] Furthermore, auxiliary grooves are formed in the outer parts of the two sets of connecting columns; a plurality of auxiliary convex blocks are symmetrically and slidably connected in the main body of the lower die base; the plurality of auxiliary convex blocks are respectively aligned with the positions of the plurality of auxiliary grooves; a reset spring is fixedly connected to the outer part of each of the plurality of auxiliary convex blocks; the ends of the plurality of reset springs are fixedly connected in the main body of the lower die base.

[0011] Furthermore, two sets of connecting frames are symmetrically and fixedly connected to the outer part of the upper die body; a set of driving racks are fixedly connected to the bottom end faces of the two sets of connecting frames; a fixed rotating shaft is rotatably connected in the connecting box; a set of driving gears are symmetrically and fixedly connected to the outer part of the fixed rotating shaft; the two sets of driving gears are respectively engaged with the two sets of driving racks.

[0012] Furthermore, a set of control cams are coaxially and fixedly connected to the outer parts of the two fixed rotating shafts; a control pressing plate is slidably connected to the upper part of each of the two mounting boxes; the outer walls of the two sets of control cams are respectively in contact with the top end faces of the two control pressing plates; a set of connecting springs are fixedly connected to the top end faces of the two control pressing plates; the ends of the two sets of connecting springs are respectively fixedly connected in the two mounting boxes.

[0013] Furthermore, a telescopic airbag is arranged at the bottom end face of each of the two control pressing plates; the two telescopic airbags are respectively arranged in the two mounting boxes; the air outlets of the two telescopic airbags are respectively connected to the air inlets of the two blowing frames through air pipes. Beneficial effects

[0014] During the mold opening process of the present invention, with the movement of the upper die body, the fixed block will be driven to move. With the movement of the fixed block, the first control rack will be driven to move. Subsequently, through a series of transmissions, the demolding top plate will jack up the formed automotive steering arm. At the same time, during the upward movement of the demolding top plate, through a series of transmissions, the auxiliary convex block will impact the connecting column, causing the connecting column to vibrate in the vertical direction, and further causing the demolding top plate to vibrate. This can break the adsorption force or vacuum between the plastic part and the mold, making the plastic part easier to separate from the die cavity, reducing the risk of sticking to the mold. At the same time, it can also help to disperse the ejection force, avoid deformation or damage of the automotive steering arm due to local stress concentration, reduce surface depression or bubble defects of the plastic part, accelerate the demolding process, shorten the production cycle, and effectively improve the practicability of the forging mold for the automotive steering arm.

[0015] During the mold opening process, the movement of the upper mold body will drive the connecting frame to move. With the movement of the connecting frame, the transmission rack will be driven to move. Subsequently, through a series of transmissions, the control pressure plate intermittently squeezes the telescopic airbag, causing the telescopic airbag to inject the internal air into the blowing rack through the air delivery pipe. The blowing rack then blows the air onto the lower mold cavity and the demolded automotive steering arm, providing an additional auxiliary force during demolding to help the automotive steering arm better separate from the mold cavity. At the same time, blowing can form a gas protection film on the surface of the mold cavity, reducing the contact between the high-temperature molten metal and air and reducing the generation of oxide scales. Moreover, through blowing, the oxide scales attached to the mold surface or the automotive steering arm can be blown off, causing them to separate from the mold cavity and the surface of the automotive steering arm, preventing the oxide scales from mixing into the automotive steering arm and affecting the quality, or remaining on the mold surface and affecting the subsequent die-casting process, effectively improving the convenience of the forging mold for automotive steering arms. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0017] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0018] In the drawings: Figure 1 is the axonometric structure diagram of the present invention.

[0019] Figure 2 is the axonometric structure diagram of the positioning hole of the present invention.

[0020] Figure 3 is the axonometric structure diagram of the upper mold cavity of the present invention.

[0021] Figure 4 is the sectional structure diagram of the present invention.

[0022] Figure 5 is the axonometric structure diagram of the connecting carriage of the present invention.

[0023] Figure 6 is the axonometric structure diagram of the connecting frame of the present invention.

[0024] Figure 7 is the axonometric structure diagram of the telescopic airbag of the present invention.

[0025] Figure 8 is the axonometric structure diagram of the control pressure plate of the present invention.

[0026] LIST OF REFERENCE NUMERALS 1. Lower die base body; 101. Positioning column; 102. Upper die body; 103. Lower die cavity; 104. Positioning hole; 105. Upper die cavity; 106. Fixed block; 107. First control rack; 108. First control gear; 109. Second control gear; 110. Second control rack; 111. Connecting carriage; 112. Connecting column; 113. Demolding top plate; 114. Auxiliary groove; 115. Auxiliary bump; 116. Return spring; 117. Connecting frame; 118. Transmission rack; 119. Blowing frame; 120. Fixed rotating shaft; 121. Transmission gear; 122. Installation box; 123. Control cam; 124. Control pressing plate; 125. Telescopic airbag; 126. Connecting spring; 127. Connecting box. Detailed implementation manner Embodiment 1

[0027] The present invention provides an automobile steering arm forging die convenient for demolding. Please refer to Figures 1 to 8 As shown, it includes: a lower die base body 1; the lower die base body 1 is a rectangular block structure made of hot work die steel; an upper die body 102 is arranged on the upper part of the lower die base body 1; the upper die body 102 is a rectangular block structure made of hot work die steel; four positioning holes 104 are penetrated through the top end surface of the upper die body 102 in a rectangular array; four positioning columns 101 are fixedly connected to the top end surface of the lower die base body 1 in a rectangular array; the four positioning columns 101 are respectively arranged in the four positioning holes 104; two lower die cavities 103 are symmetrically opened on the top end surface of the lower die base body 1; two upper die cavities 105 are symmetrically opened on the bottom end surface of the upper die body 102; the two upper die cavities 105 are respectively aligned with the positions of the two lower die cavities 103; two blowing frames 119 are symmetrically fixedly connected to the outside of the lower die base body 1; the air outlets of the two blowing frames 119 are respectively aligned with the positions of the two lower die cavities 103; two installation boxes 122 are symmetrically fixedly connected to the outside of the lower die base body 1; a connecting box 127 is fixedly connected to the top end surface of each of the two installation boxes 122.

[0028] Among them, two groups of fixed blocks 106 are symmetrically fixedly connected to the bottom end surface of the upper die body 102; a group of first control racks 107 are fixedly connected to the bottom end surfaces of the two groups of fixed blocks 106; the two groups of first control racks 107 are symmetrically slidably connected in the lower die base body 1; two groups of first control gears 108 are symmetrically rotatably connected in the lower die base body 1; the two groups of first control gears 108 are respectively meshed with the two groups of first control racks 107.

[0029] Among them, a group of second control gears 109 are meshed with the inner sides of the two groups of first control gears 108; a group of second control racks 110 are meshed with the inner sides of the two groups of second control gears 109; the two groups of second control racks 110 are both slidably connected in the lower die base body 1.

[0030] Among them, a set of connecting sliding frames 111 are fixedly connected to the bottom end surfaces of the two groups of the second control racks 110; a set of connecting columns 112 are fixedly connected to the inner sides of the two groups of connecting sliding frames 111; the two groups of connecting columns 112 are all slidably connected in the lower die base body 1; a set of demolding top plates 113 are fixedly connected to the top end surfaces of the two groups of connecting columns 112; the two groups of demolding top plates 113 are respectively aligned with the positions of the two groups of lower die cavities 103.

[0031] Among them, auxiliary grooves 114 are opened on the outer parts of the two groups of the connecting columns 112; a plurality of auxiliary convex blocks 115 are symmetrically and slidably connected in the lower die base body 1; the plurality of auxiliary convex blocks 115 are respectively aligned with the positions of the plurality of auxiliary grooves 114; a reset spring 116 is fixedly connected to the outer part of each of the plurality of auxiliary convex blocks 115; the ends of the plurality of reset springs 116 are fixedly connected in the lower die base body 1.

[0032] Specific usage method and function of this embodiment: The hot work die steel described in the present invention is H13 hot work die steel, which can provide high toughness for the die body, and at the same time has a relatively low density, reducing the overall weight of the die, making the die more lightweight. The forging material is selected as high-strength and tough die-casting aluminum alloy, which has good mechanical properties and lightweight characteristics. When forging the automotive steering arm, the upper die body 102 is connected to the forging press and the lower die base body 1 is fixed to the workbench. Then the blank is heated and forged into the designed size and placed into the lower die cavity 103. Subsequently, the forging press applies pressure to the upper die body 102 to move it downward, forging the blank placed in the lower die cavity 103, and forging the automotive steering arm into shape at one time. After the automotive steering arm is forged into shape, the upper die body 102 is opened for mold opening. During the mold opening process, as the upper die body 102 moves, it will drive the fixed block 106 to move. As the fixed block 106 moves, it will drive the first control rack 107 to move. As the first control rack 107 moves, it will drive the first control gear 108 engaged with it to rotate. During the rotation of the first control gear 108, it will drive the second control gear 109 to rotate. As the second control gear 109 rotates, it will drive the second control rack 110 engaged with it to move. Since the first control gear 108 is engaged with the second control gear 109, this makes the rotation direction of the second control gear 109 opposite to that of the first control gear 108, and further makes the running direction of the second control rack 110 the same as that of the first control rack 107, so that the first control rack 107 and the second control rack 110 move synchronously. During the movement of the second control rack 110, it will drive the connecting carriage 111 to move. As the connecting carriage 111 moves, it will drive the connecting column 112 and the demolding top plate 113 to move, so that the demolding top plate 113 jacks up the formed automotive steering arm, facilitating the demolding of the automotive steering arm. During the upward movement of the demolding top plate 113, the outside of the connecting column 112 contacts the auxiliary convex block 115 and squeezes the auxiliary convex block 115, causing the auxiliary convex block 115 to slide in the lower die base body 1 and compress the return spring 116, so that the return spring 116 accumulates elastic potential energy. When the auxiliary groove 114 on the connecting column 112 aligns with the position of the auxiliary convex block 115, the return spring 116 instantaneously releases energy to push the auxiliary convex block 115 to quickly reset, causing the auxiliary convex block 115 to impact the connecting column 112, causing the connecting column 112 to vibrate in the vertical direction, and further causing the demolding top plate 113 to vibrate. In this application, both the connecting column 112 and the demolding top plate 113 are made of quenched steel, which has the characteristics of wear resistance and impact resistance, and the return spring 116 is made of a high-temperature resistant compression spring. Embodiment 2

[0033] Based on Embodiment 1, please refer to Figures 1 to 8As shown in the figure, it includes: a connecting frame 117, a transmission rack 118, a blowing frame 119, a fixed rotating shaft 120, a transmission gear 121, a control cam 123, a control pressing plate 124, a telescopic airbag 125, and a connecting spring 126. Two groups of connecting frames 117 are symmetrically and fixedly connected to the outside of the upper die body 102; a group of transmission racks 118 are fixedly connected to the bottom end surfaces of the two groups of connecting frames 117; a fixed rotating shaft 120 is rotatably connected in the connecting box 127; a group of transmission gears 121 are symmetrically and fixedly connected to the outside of the fixed rotating shaft 120; the two groups of transmission gears 121 are respectively engaged with the two groups of transmission racks 118.

[0034] Among them, a group of control cams 123 are coaxially and fixedly connected to the outside of the two fixed rotating shafts 120; a control pressing plate 124 is slidably connected to the upper part of each of the two mounting boxes 122; the outer walls of the two groups of control cams 123 are respectively in contact with the top end surfaces of the two control pressing plates 124; a group of connecting springs 126 are fixedly connected to the top end surfaces of the two control pressing plates 124; the ends of the two groups of connecting springs 126 are respectively fixedly connected in the two mounting boxes 122.

[0035] Among them, a telescopic airbag 125 is arranged at the bottom end surface of each of the two control pressing plates 124; the two telescopic airbags 125 are respectively arranged in the two mounting boxes 122; the air outlets of the two telescopic airbags 125 are respectively connected to the air inlets of the two blowing frames 119 through air pipes.

[0036] The specific usage method and function of this embodiment: In the present invention, during the mold opening process, as the upper die body 102 moves, it will also drive the connecting frame 117 to move. As the connecting frame 117 moves, it will drive the transmission rack 118 to move. As the transmission rack 118 moves, it will drive the transmission gear 121 engaged with it to rotate. As the transmission gear 121 rotates, it will drive the fixed rotating shaft 120 to rotate. By the rotation of the fixed rotating shaft 120, it will drive the control cam 123 to rotate. As the control cam 123 rotates, it will intermittently squeeze the control pressing plate 124, causing the control pressing plate 124 to reciprocally slide under the action of the elastic potential energy of the connecting spring 126 itself. During the reciprocal sliding of the control pressing plate 124, it will intermittently squeeze the telescopic airbag 125, causing the telescopic airbag 125 to inject the air inside through the air pipe into the blowing frame 119, and the blowing frame 119 will blow the air towards the lower die cavity 103 and the demolded automotive steering arm, assisting in demolding and cleaning the scale at the same time. The blowing frame is tilted at 30 degrees towards the lower die cavity 103, using the oblique airflow to enhance the scouring ability of the complex cavity. This angle can avoid the direct rebound of the airflow, reduce the kinetic energy loss, and make the gas more effectively peel off the scale.

[0037] In this article, the following points need to be noted: 1. The accompanying drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures may refer to the general design.

[0038] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other to obtain new embodiments.

[0039] The above are only the specific implementation manners of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. An automotive steering arm forging die facilitating demolding, comprising: Lower die base body (1); the lower die base body (1) is a rectangular block structure made of hot work die steel; An upper die body (102) is arranged on the upper part of the lower die base body (1); the upper die body (102) is a rectangular block structure made of hot work die steel; characterized in that, four positioning holes (104) are penetrated through the top end surface of the upper die body (102) in a rectangular array; four positioning columns (101) are fixedly connected to the top end surface of the lower die base body (1) in a rectangular array; the four positioning columns (101) are respectively arranged in the four positioning holes (104); two lower die cavities (103) are symmetrically opened on the top end surface of the lower die base body (1); two upper die cavities (105) are symmetrically opened on the bottom end surface of the upper die body (102); the two upper die cavities (105) are respectively aligned with the positions of the two lower die cavities (103); two air blowing frames (119) are symmetrically fixedly connected to the outside of the lower die base body (1); the air outlets of the two air blowing frames (119) are respectively aligned with the positions of the two lower die cavities (103); two mounting boxes (122) are symmetrically fixedly connected to the outside of the lower die base body (1); connection boxes (127) are fixedly connected to the top end surfaces of the two mounting boxes (122).

2. The forging die for an automotive steering arm that is easy to demold according to claim 1, characterized in that: Two groups of fixing blocks (106) are symmetrically fixedly connected to the bottom end surface of the upper die body (102); a group of first control racks (107) are fixedly connected to the bottom end surfaces of the two groups of fixing blocks (106); the two groups of first control racks (107) are symmetrically slidably connected in the lower die base body (1); two groups of first control gears (108) are symmetrically rotatably connected in the lower die base body (1); the two groups of first control gears (108) are respectively meshed with the two groups of first control racks (107).

3. The forging die for an automotive steering arm that is easy to demold according to claim 2, characterized in that: A group of second control gears (109) are meshed with the inner sides of the two groups of first control gears (108); a group of second control racks (110) are meshed with the inner sides of the two groups of second control gears (109); the two groups of second control racks (110) are both slidably connected in the lower die base body (1).

4. The forging die for an automotive steering arm facilitating demolding according to claim 3, wherein: A group of connecting sliding frames (111) are fixedly connected to the bottom end surfaces of the two groups of second control racks (110); a group of connecting columns (112) are fixedly connected to the inner sides of the two groups of connecting sliding frames (111); the two groups of connecting columns (112) are both slidably connected in the lower die base body (1); a group of demolding top plates (113) are fixedly connected to the top end surfaces of the two groups of connecting columns (112); the two groups of demolding top plates (113) are respectively aligned with the positions of the two lower die cavities (103).

5. The forging die for an automotive steering arm that is easy to demold according to claim 4, characterized in that: Auxiliary grooves (114) are opened on the outsides of the two groups of connecting columns (112); multiple groups of auxiliary convex blocks (115) are symmetrically slidably connected in the lower die base body (1); the multiple groups of auxiliary convex blocks (115) are respectively aligned with the positions of the multiple groups of auxiliary grooves (114); return springs (116) are fixedly connected to the outsides of the multiple groups of auxiliary convex blocks (115); the ends of the multiple groups of return springs (116) are fixedly connected in the lower die base body (1).

6. The forging die for an automotive steering arm that is convenient for demolding according to claim 1, wherein: Two sets of connecting frames (117) are symmetrically and fixedly connected to the outside of the upper die body (102); a set of transmission racks (118) are fixedly connected to the bottom end faces of the two sets of connecting frames (117); a fixed rotating shaft (120) is rotatably connected in the connection box (127); a set of transmission gears (121) are symmetrically and fixedly connected to the outside of the fixed rotating shaft (120); the two sets of transmission gears (121) are respectively engaged with the two sets of transmission racks (118).

7. The forging die for an automotive steering arm that is easy to demold according to claim 6, characterized in that: A set of control cams (123) are coaxially and fixedly connected to the outside of each of the two fixed rotating shafts (120); a control pressing plate (124) is slidably connected to the upper part of each of the two mounting boxes (122); the outer walls of the two sets of control cams (123) are respectively in contact with the top end faces of the two control pressing plates (124); a set of connecting springs (126) are fixedly connected to the top end faces of the two control pressing plates (124); the ends of the two sets of connecting springs (126) are respectively fixedly connected in the two mounting boxes (122).

8. The forging die for an automotive steering arm facilitating demolding according to claim 7, characterized in that: A telescopic airbag (125) is arranged at the bottom end face of each of the two control pressing plates (124); the two telescopic airbags (125) are respectively arranged in the two mounting boxes (122); the air outlets of the two telescopic airbags (125) are respectively connected to the air inlets of the two blowing frames (119) through air pipes.

Images