A cold extrusion forming apparatus for forgings

Abstract

This invention provides a cold extrusion forming apparatus for forgings, belonging to the field of forging manufacturing technology. It includes an assembly table, characterized in that four vertical columns located at corners are mounted on the assembly table. An assembly cover is mounted on top of each vertical column, and a hydraulic cylinder is mounted on the assembly cover. A displacement plate is mounted on the telescopic end of each hydraulic cylinder. The displacement plate has a pre-drilled sliding opening and is slidably connected to the vertical column via the sliding opening. An upper die is mounted below the displacement plate. This invention solves the problem that high-frequency oscillations during forging accelerate fatigue damage to the die surface, thus requiring attenuation of oscillation energy to reduce the initiation and propagation of microcracks on the die surface. However, current vibration-damping components experience a decrease in their ability to counteract oscillations over long-term operation, and the polyurethane used gradually warps and dents in its body, affecting its vibration resistance.

Description

Technical Field

[0001] This invention belongs to the field of forging manufacturing technology, and specifically relates to a forging cold extrusion forming device. Background Technology

[0002] The development of cold extrusion technology was very slow in its early stages, and for a long time it could only be used to extrude a few soft metals (lead and tin). It was not until the late 19th and early 20th centuries that it began to be used to extrude harder non-ferrous metals (zinc, aluminum, copper, brass, etc.). As for steel extrusion, the metal cold extrusion forming process is a manufacturing method in which a metal blank is placed in a cold extrusion die, and pressure is applied to the blank at room temperature by a fixed punch on a press, causing the metal blank to undergo plastic deformation to obtain a part. It is also often used in the manufacture of aluminum forgings for aerospace applications and magnesium alloy forgings.

[0003] Current cold extrusion dies require high and low displacement to perform forging during cold extrusion forming of forgings. However, the high-frequency oscillations during forging can accelerate fatigue damage on the die surface. Therefore, it is necessary to attenuate the oscillation energy and reduce the initiation and propagation of microcracks on the die surface. However, the ability of some current anti-vibration components to counteract oscillations will decrease during long-term operation, and the polyurethane used will gradually twist and dent in the body, affecting the vibration resistance. Therefore, a cold extrusion forming device for forgings is proposed. Summary of the Invention

[0004] This invention provides a cold extrusion forming apparatus for forgings, which aims to solve the problem that high-frequency oscillations during forging accelerate fatigue damage on the die surface. Therefore, it is necessary to attenuate the oscillation energy and reduce the initiation and propagation of microcracks on the die surface. However, the ability of some current anti-vibration components to counteract oscillations decreases during long-term operation, and the polyurethane used will gradually twist and sink in the body, affecting the vibration resistance.

[0005] This invention provides a cold extrusion forming apparatus for forgings, comprising an assembly table, characterized in that four [unclear - possibly referring to components or fixtures] are mounted on the assembly table. A vertical column located at a corner has an assembly cover on top, a hydraulic cylinder on the assembly cover, a displacement plate on the telescopic end of the hydraulic cylinder, a sliding port on the displacement plate and a sliding connection to the vertical column via the sliding port, an upper mold below the displacement plate, several vibration-damping units on the assembly platform, an assembly base on top of the vibration-damping units, a lower mold on top of the assembly base, constraint columns on the assembly platform slidingly connected to both sides of the assembly base, a vibration-damping unit including a base, a support unit one fixedly connected to the upper part of the base, a support plate on the side of the support unit one, a support unit two fixedly connected to the upper part of the support unit one, a connecting plate fixedly connected to the upper part of the support unit two, protection units on both sides of the support unit one, a compression unit on the upper inner wall of the support plate, and a support unit three inside the support unit one. The supporting unit includes a cover, polyurethane bending strips, polyurethane cross brackets, a bearing ring, and an outer edge platform. The cover is fixed to the upper part of the base. Four polyurethane bending strips are installed. The polyurethane bending strips are fixed to the inner wall of the cover. The polyurethane cross brackets are fixed to the bottom of the polyurethane bending strips. The bearing ring is fixed to the lower inner wall of the cover. The outer edge platform is fixed to both ends of the polyurethane bending strips.

[0006] Furthermore, the upper part of the polyurethane cross frame and the lower part of the polyurethane curved strip are adapted to each other in their central areas, the outer edge platform and the inner wall of the cover are in contact with each other, the polyurethane cross frame extends from the lower wall of the bearing ring to the central area of ​​the bearing ring, eight support plates are installed, and the support plates are fixed to the side wall of the cover.

[0007] Furthermore, the second supporting unit includes a second cover, top contact rods, square washers, grooves, compression rings, fan-shaped platforms, and a bearing cylinder. The second cover is fixed to the lower wall of the connecting piece. Four top contact rods are installed, each divided into two pairs, with one pair installed on the upper inner wall of the second cover. The square washers are installed between the two pairs of top contact rods. The grooves are pre-reserved on the upper and lower surfaces of the square washers.

[0008] Furthermore, the compression ring is installed below the square washer, and four sector-shaped platforms are installed, all of which are fixed to the inner wall of the compression ring. The bearing cylinder is installed inside the compression ring.

[0009] Furthermore, the compression ring is installed below the square washer, and four sector-shaped platforms are installed, all of which are fixed to the inner wall of the compression ring. The bearing cylinder is installed inside the compression ring.

[0010] Furthermore, the protection unit includes a sheet body, an extension strip, a wire interface, and a connecting chamber. The sheet body is fixedly connected to both sides of the base, the extension strip is fixedly connected to the side of the sheet body further away from the cover, the wire interface is reserved on the end of the extension strip further away from the sheet body, and the connecting chamber is reserved below the bearing ring.

[0011] The sheet extends into the inside from one side wall of the cover, and the sheet and the extension strip are connected to each other, as are the sheet and the bearing ring.

[0012] Furthermore, the compression unit includes a bearing plate, a support strip, and a rectangular strip. The bearing plate is fixedly connected to the bottom of the cover body two. Eight support strips are installed, and the eight support strips are divided into four pairs and each is installed under the four corners of the bearing plate. The rectangular strips are fixedly connected to the sides of each pair of support strips.

[0013] Furthermore, the supporting unit three includes a base platform, a limiting platform, a bead, a connecting rod one, and a connecting rod two. The base platform is installed inside the bearing ring, the limiting platform is fixedly connected to the top of the base platform, the bead is installed between the four limiting platforms, the connecting rod one is fixedly connected to the top of the bead, the connecting rod two is slidably installed on the connecting rod one, the base platform and the cover one are fixedly connected at the bottom, and the limiting platform and the bead are installed on the top of the connecting rod two.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. This invention, through a cover body, a top contact rod, a square washer, a groove, a pressure ring, and a fan-shaped platform, increases vibration resistance through the contact resistance between the pressure ring and the polyurethane cross frame, combined with the properties of polyurethane. The polyurethane sheet in the square washer bears external force in the central area, causing it to bend up on both sides. This bending allows oil to be displaced into the groove through the gaps between the polyurethane sheets. After the square washer returns to its original position, the oil in the groove is collected in the groove. The groove protects the square washer, pressure ring, and bearing ring, reducing the natural aging of the polyurethane-made parts and ensuring their long-term use.

[0016] 2. The present invention, through the sheet body, extension strip, thread interface, and connecting chamber, prevents the compression ring and the bearing ring from being misaligned by external forces. Moreover, the thread interface side opening only seeps out from the extension strip during the compression of the compression ring and the bearing ring. The seeping oil forms an oil film on the fasteners through the seeping oil, preventing the fasteners in the thread interface from being corroded.

[0017] 3. This invention utilizes a cover body, polyurethane curved strips, polyurethane cross braces, a bearing plate, a bearing ring, an outer edge platform, a support strip, and a rectangular strip. The polyurethane curved strips bear the pressure, dispersing the pressure. The properties of polyurethane counteract the pressure. The pressure from the polyurethane curved strips is directed downwards towards the contact points of the connected polyurethane cross braces, transmitting some of the pressure downwards. The polyurethane cross braces and polyurethane curved strips together bear the pressure, increasing vibration resistance and preventing the polyurethane curved strips from warping in a short time after bearing pressure, thus providing better vibration resistance.

[0018] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the vibration-damping unit structure according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure behind the vibration-damping unit in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the vibration-damping unit according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the support unit according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the three-structure support unit according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the support unit two structure according to an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the compression ring structure according to an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the protection unit structure according to an embodiment of the present invention;

[0030] Figure reference numerals: 11. Assembly platform; 112. Vertical column; 113. Assembly cover; 114. Hydraulic cylinder; 115. Displacement plate; 116. Upper mold; 117. Vibration-resistant unit; 118. Assembly base; 119. Constraint column; 1110. Lower mold; 12. Base; 13. Support unit one; 132. Cover one; 133. Polyurethane bending strip; 134. Polyurethane cross frame; 135. Bearing ring; 136. Outer edge platform; 14. Support plate; 15. Support unit two; 152. Cover two; 153. Top contact rod ; 154. Square washer; 155. Trench; 156. Connecting channel; 157. Compression ring; 158. Fan-shaped platform; 159. Bearing cylinder; 16. Connecting piece; 17. Protection unit; 172. Plate; 173. Extension strip; 174. Threaded interface; 175. Connecting chamber; 18. Compression unit; 182. Bearing piece; 183. Supporting strip; 184. Rectangular strip; 19. Supporting unit three; 192. Foundation platform; 193. Restriction platform; 194. Bead; 195. Connecting rod one; 196. Connecting rod two. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] Reference Figure 1-9 This invention provides a cold extrusion forming apparatus for forgings, comprising an assembly table 11, four vertical columns 112 positioned at corners mounted on the assembly table 11, an assembly cover 113 mounted on the top of the vertical columns 112, a hydraulic cylinder 114 mounted on the assembly cover 113, a displacement plate 115 mounted on the telescopic end of the hydraulic cylinder 114, the displacement plate 115 having a pre-reserved sliding port and being slidably connected to the vertical column 112 via the sliding port, and a [missing information - likely a component or component] mounted below the displacement plate 115. The upper mold 116 and the assembly table 11 are equipped with several vibration-damping units 117. The vibration-damping units 117 are equipped with an assembly base 118. The assembly base 118 is equipped with a lower mold 1110. The two sides of the assembly base 118 are slidably connected to the constraint columns 119 installed on the assembly table 11. The constraint columns 119 are used to restrict the assembly base 118. The hydraulic cylinder 114 pulls the upper mold 116 down to perform the forming work of the lower mold 1110.

[0033] The vibration-resistant unit 117 includes a base 12. A support unit 13 is fixedly connected to the upper part of the base 12. Support plates 14 are installed on the sides of support unit 13. A second support unit 15 is fixedly connected to the upper part of support unit 13. A connecting plate 16 is fixedly connected to the upper part of support unit 15. Protective units 17 are installed on both sides of support unit 13. A compression unit 18 is installed on the upper inner wall of the support plate 14. A third support unit 19 is installed inside support unit 13. Support unit 13 includes a cover 132, a polyurethane bending strip 133, a polyurethane cross frame 134, a load-bearing ring 135, and an outer edge platform 136. The cover 132 is fixedly connected to the upper part of the base 12. Four polyurethane bending strips 133 are installed and fixed to the inner wall of the cover 132. Polyurethane cross brackets 134 are fixed to the bottom of the polyurethane bending strips 133. The bearing ring 135 is fixed to the inner lower wall of the cover 132. The outer edge platform 136 is fixed to both ends of the polyurethane bending strips 133. The upper part of the polyurethane cross bracket 134 and the lower part of the polyurethane bending strip 133 are matched with each other in the middle area. The outer edge platform 136 and the inner wall of the cover 132 touch each other. The polyurethane cross bracket 134 passes through the lower wall of the bearing ring 135 to the middle area of ​​the bearing ring 135. Eight support plates 14 are installed and fixed to the side wall of the cover 132.

[0034] Support unit 2 15 includes cover 2 152, top contact rod 153, square washer 154, channel 155, compression ring 157, sector platform 158, and bearing cylinder 159. Cover 2 152 is fixed to the lower wall of connecting piece 16. Four top contact rods 153 are installed, each divided into two pairs, with one pair installed on the upper inner wall of cover 2 152. Square washer 154 is installed between the two pairs of top contact rods 153. Channels 155 are pre-installed in each channel. The square washer 154 is located above and below. The compression ring 157 is installed below the square washer 154. Four sector platforms 158 are installed, and all four sector platforms 158 are fixed to the inner wall of the compression ring 157. The bearing cylinder 159 is installed inside the compression ring 157. The top of the other pair of top contact rods 153 is fixed to the inner wall of the central area of ​​the cover body 152. The square washer 154 is composed of four polyurethane sheets with the same structure. The bearing cylinder 159 and the sector platforms 158 are fixed to each other.

[0035] The compression unit 18 includes a support plate 182, support strips 183, and rectangular strips 184. The support plate 182 is fixed to the underside of the cover 152. Eight support strips 183 are installed, divided into four pairs, each installed under one of the four corners of the support plate 182. The rectangular strips 184 are fixed to the sides of each pair of support strips 183. During the downward compression by the connecting plate 16, the cover 132 bears the pressure through the polyurethane bending strips 133. After bearing the pressure through the polyurethane bending strips 133, the pressure is dispersed from the central area towards the head through the polyurethane bending strips 133, and the outer edge 136 of the polyurethane bending strips 133 touches the cover 132. Thus, the pressure is dispersed by bearing the pressure through the polyurethane bending strips 133, and the pressure is offset by the properties of polyurethane. The surface bearing pressure is directed towards the direction where the polyurethane cross frame 134 connected to the bottom touches each other, and some of the pressure borne by the polyurethane curved strip 133 is transmitted downwards. The polyurethane cross frame 134 and the polyurethane curved strip 133 together bear the pressure and compress to increase the vibration resistance, and prevent the polyurethane curved strip 133 from deforming in a short time after bearing the pressure, and has a better offsetting ability. The downward displacement of the cover body 2 152 can drive the bearing plate 182 to move downwards and press on the polyurethane curved strip 133. Through the pressure of the bearing plate 182, the bearing plate 182 touches the inside of the cover body 1 132 through the support strip 183, and touches the outer edge platform 136 during the downward pressure of the rectangular strip 184, which has the ability to compress and constrain the outer edge platform 136, and inhibit the tendency of the polyurethane curved strip 133 to move towards the central area of ​​the cover body 1 132.

[0036] The protection unit 17 includes a sheet body 172, an extension strip 173, a wire interface 174, and a connecting chamber 175. The sheet body 172 is fixed to both sides of the base 12. The extension strip 173 is fixed to the side of the sheet body 172 furthest from the cover 132. The wire interface 174 is reserved on the end of the extension strip 173 furthest from the sheet body 172. The connecting chamber 175 is reserved below the bearing ring 135. The sheet body 172 extends from the side wall of the cover 132 into the interior. The sheet body 172 and the extension strip 173 are interconnected. The sheet body 172 and the bearing ring... The components 135 are interconnected. The resistance between the compression ring 157 and the polyurethane cross frame 134, combined with the properties of polyurethane, increases the vibration resistance. The polyurethane sheet in the square washer 154 bears external force in the central area, causing it to bend up on both sides. This bending allows the oil to be displaced into the groove 155 through the gaps between the polyurethane sheets. The groove 155 protects the square washer 154, compression ring 157, and bearing ring 135, reducing the natural aging of the polyurethane-made parts and ensuring their long-term use.

[0037] Support unit 3 19 includes a foundation platform 192, a restraining platform 193, a ball 194, a connecting rod 195, and a connecting rod 2 196. The foundation platform 192 is installed inside the bearing ring 135. The restraining platforms 193 are fixedly connected to the foundation platform 192. The ball 194 is installed between the four restraining platforms 193. The connecting rod 195 is fixedly connected to the top of the ball 194. The connecting rod 2 196 is slidably installed on the connecting rod 195. The foundation platform 192... The cover 132 is fixedly connected to the bottom. The connecting rod 196 is equipped with a limiting platform 193 and a bead 194 to prevent the compression ring 157 and the bearing ring 135 from being misaligned under external force. The opening on the side of the thread interface 174 only seeps out through the extension strip 173 during the compression of the compression ring 157 and the bearing ring 135. The seeping oil forms an oil film on the fasteners through the seeping oil, preventing the fasteners in the thread interface 174 from being corroded.

[0038] The specific implementation method is as follows: During the downward pressing of the connecting piece 16, the cover 132 bears the pressure through the polyurethane bending strip 133. After bearing the pressure through the polyurethane bending strip 133, the pressure can be dispersed from the central area towards the head through the polyurethane bending strip 133, and the outer edge 136 of the polyurethane bending strip 133 touches the cover 132. Thus, the pressure is dispersed by bearing the pressure through the polyurethane bending strip 133, and the pressure is offset by the properties of polyurethane. The pressure bearing the polyurethane bending strip 133 is directed towards the direction where the polyurethane cross frame 134 of the downward pressing connection touches each other, and some of the pressure bearing the polyurethane bending strip 133 is directed downward. The transmission utilizes the polyurethane cross frame 134 and the polyurethane bending strip 133 together to bear the compression and increase the vibration resistance, preventing the polyurethane bending strip 133 from twisting in shape in a short time after bearing the compression, thus having a better offsetting ability. Furthermore, the downward displacement of the cover body 152 can drive the bearing plate 182 to move downward and press against the polyurethane bending strip 133. Through the pressure of the bearing plate 182, the bearing plate 182 touches the inside of the cover body 132 via the support strip 183, and touches the outer edge platform 136 during the downward compression via the rectangular strip 184, thus having the ability to compress and constrain the outer edge platform 136 and suppress the tendency of the polyurethane bending strip 133 to move towards the central area of ​​the cover body 132.

[0039] The pressure from the connecting piece 16 drives the second cover 152 to approach the first cover 132 downwards, and the pressure ring 157 inside the second cover 152 touches the bending point of the polyurethane cross frame 134 downwards, causing the pressure ring 157 to tighten inwards. The sector-shaped platform 158 connected to the pressure ring 157 touches the lower bearing ring 135 through its downward bending, causing the sector-shaped platform 158 to press against the upper part of the bearing ring 135 and expand towards the side. Thus, the resistance of the contact between the pressure ring 157 and the polyurethane cross frame 134, combined with the properties of polyurethane, increases the vibration resistance. Furthermore, the contact between the sector-shaped platform 158 and the bearing ring 135 increases the contact resistance, providing various vibration and oscillation resistance capabilities, resulting in better vibration resistance. The pressure ring 157... 57 and the bearing ring 135 slide against each other, reducing the volume between the pressure ring 157 and the bearing ring 135, causing the oil between the pressure ring 157 and the bearing ring 135 to move to the square washer 154. In this way, the pressure ring 157, through the upper top contact rod 153 and the lower top contact rod 153 of the connecting piece 16, together presses the square washer 154. As a result, the polyurethane sheet in the square washer 154 is raised on both sides by bearing external force in the central area. Through the raising, the oil is moved into the groove 155 through the gap between the polyurethane sheets. The groove 155 protects the square washer 154, the pressure ring 157, and the bearing ring 135, weakening the natural aging of the polyurethane-made parts and ensuring the long-term use of the polyurethane-made parts.

[0040] As the connecting plate 16 and the base 12 approach each other, the limiting plate 193 connected to the base 192, via the ball 194, presses the connecting rod 195 and the connecting rod 196 closer together. The compression of the connecting rods 195 and 196 supports and guides the cover 132 and the cover 152, preventing misalignment of the compression ring 157 and the bearing ring 135 under external force. Furthermore, the compression of the parts between the compression ring 157 and the bearing ring 135 allows the internal oil to flow through the connecting chamber. 175 is displaced into the sheet 172, and then displaced into the extension strip 173. It is displaced out through the side opening of the thread interface 174 on the extension strip 173. Due to the characteristics of the oil and the intermolecular forces on the surface, the side opening of the thread interface 174 only seeps out through the extension strip 173 during the compression of the compression ring 157 and the bearing ring 135. The seeping oil forms an oil film on the fastener, preventing the fastener in the thread interface 174 from being corroded.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A forging cold extrusion forming apparatus, comprising an assembly table (11), characterized in that, Four vertical columns (112) located at corners are installed on the assembly table (11). An assembly cover (113) is installed on the top of the vertical columns (112). A hydraulic cylinder (114) is installed on the assembly cover (113). A displacement plate (115) is installed on the telescopic end of the hydraulic cylinder (114). The displacement plate (115) has a pre-reserved sliding port and is slidably connected to the vertical column (112) through the sliding port. An upper mold (116) is installed below the displacement plate (115). The assembly table (11) Several vibration-damping units (117) are installed on the top of the vibration-damping unit (117), an assembly base (118) is installed on the top of the assembly base (118), a lower mold (1110) is installed on the top of the assembly base (118), and constraint columns (119) installed on the assembly table (11) are slidably connected to both sides of the assembly base (118). The vibration-damping unit (117) includes a base (12), and a support unit (13) is fixedly connected to the upper part of the base (12). Support plates (119) are installed on the sides of the support unit (13). 4) The upper part of the first support unit (13) is fixedly connected to the second support unit (15), the upper part of the second support unit (15) is fixedly connected to the connecting piece (16), the two sides of the first support unit (13) are equipped with the protection unit (17), the upper inner wall of the support piece (14) is equipped with the compression unit (18), and the inside of the first support unit (13) is equipped with the third support unit (19); the first support unit (13) includes the cover body (132), the polyurethane bending strip (133), and the polyurethane cross frame (13). 4) Bearing ring (135), outer edge platform (136), the cover body (132) is fixed to the upper part of the base (12), four polyurethane bending strips (133) are installed, the polyurethane bending strips (133) are fixed to the inner wall of the cover body (132), the polyurethane cross frame (134) is fixed to the bottom of the polyurethane bending strips (133), the bearing ring (135) is fixed to the inner lower wall of the cover body (132), and the outer edge platform (136) is fixed to both ends of the polyurethane bending strips (133).

2. The forging cold extrusion forming apparatus according to claim 1, characterized in that: The upper part of the polyurethane cross frame (134) and the lower part of the polyurethane curved strip (133) are adapted to each other in the central area. The outer edge platform (136) and the inner wall of the cover (132) touch each other. The polyurethane cross frame (134) extends from the lower wall of the bearing ring (135) to the central area of ​​the bearing ring (135). Eight support plates (14) are installed. The support plates (14) are fixed to the side wall of the cover (132).

3. The forging cold extrusion forming apparatus according to claim 2, characterized in that: The second supporting unit (15) includes a second cover (152), a top contact rod (153), a square washer (154), a groove (155), a compression ring (157), a fan-shaped platform (158), and a bearing cylinder (159). The second cover (152) is fixed to the lower wall of the connecting piece (16). Four top contact rods (153) are installed, and each of the four top contact rods (153) is divided into two pairs. One pair of the two top contact rods is installed on the upper inner wall of the second cover (152). The square washer (154) is installed between the two pairs of top contact rods (153). The grooves (155) are reserved on the upper and lower sides of the square washer (154).

4. The forging cold extrusion forming apparatus according to claim 3, characterized in that: The compression ring (157) is installed below the square washer (154), and four fan-shaped platforms (158) are installed. All four fan-shaped platforms (158) are fixed to the inner wall of the compression ring (157), and the bearing cylinder (159) is installed inside the compression ring (157).

5. The forging cold extrusion forming apparatus according to claim 4, characterized in that: The compression ring (157) is installed below the square washer (154), and four fan-shaped platforms (158) are installed. All four fan-shaped platforms (158) are fixed to the inner wall of the compression ring (157), and the bearing cylinder (159) is installed inside the compression ring (157).

6. The forging cold extrusion forming apparatus according to claim 5, characterized in that: The protection unit (17) includes a sheet (172), an extension strip (173), a wire interface (174), and a connecting chamber (175). The sheet (172) is fixedly connected to both sides of the base (12). The extension strip (173) is fixedly connected to the side of the sheet (172) further away from the cover (132). The wire interface (174) is reserved on the end of the extension strip (173) further away from the sheet (172). The connecting chamber (175) is reserved below the bearing ring (135).

7. The forging cold extrusion forming apparatus according to claim 6, characterized in that: The sheet (172) extends into the interior through the side wall of the cover (132), the sheet (172) and the extension strip (173) are connected to each other, and the sheet (172) and the bearing ring (135) are internally connected to each other.

8. The forging cold extrusion forming apparatus according to claim 7, characterized in that: The compression unit (18) includes a support plate (182), a support strip (183), and a rectangular strip (184). The support plate (182) is fixed to the bottom of the cover (152). There are 8 support strips (183), which are divided into 4 pairs and are each installed under the 4 corners of the support plate (182). The rectangular strip (184) is fixed to the side of each pair of support strips (183).

9. The forging cold extrusion forming apparatus according to claim 8, characterized in that: The supporting unit three (19) includes a base platform (192), a limiting platform (193), a bead (194), a connecting rod one (195), and a connecting rod two (196). The base platform (192) is installed inside the bearing ring (135). The limiting platform (193) is fixedly connected to the top of the base platform (192). The bead (194) is installed between the four limiting platforms (193). The connecting rod one (195) is fixedly connected to the top of the bead (194). The connecting rod two (196) is slidably installed on the top of the connecting rod one (195). The base platform (192) and the cover one (132) are fixedly connected below. The limiting platform (193) and the bead (194) are installed on the top of the connecting rod two (196).

Images