A forging clamp and a friction press and a method of using the same

Abstract

The application discloses a forging clamp and a friction press and a use method thereof, and belongs to the technical field of the press. The forging clamp comprises a base for mounting a die holder, and further comprises: a clamping and feeding part arranged on one side of the base and used for clamping and feeding a round bar blank to a die cavity of the die holder; a displacement assembly arranged in the base and used for driving the clamping and feeding part to displace along the length direction of the base; and a jacking assembly arranged on the base and used for jacking a forged piece formed by forging and pressing the round bar blank in the die cavity; wherein the jacking assembly is connected with the displacement assembly. Through automatic clamping and feeding, ejection and discharging, the application completely isolates the operator from the high-temperature workpiece, solves the safety hidden danger and efficiency bottleneck of the traditional friction press depending on manual operation, and is especially suitable for batch round bar blank production.

Description

Technical Field

[0001] This invention relates to the field of press technology, and in particular to a forging fixture and a friction press and its method of use. Background Technology

[0002] Friction presses are versatile pressure processing machines with a wide range of applications in various industries. In the machinery manufacturing industry, friction presses are even more widely used to perform tasks such as die forging, upsetting, bending, straightening, and precision pressing. Currently, friction presses typically require manual handling, such as using clamps to remove workpieces from the mold and placing blanks into the mold for die casting. This is inconvenient, especially with workpieces heated to high temperatures, where operators face the risk of skin burns from the heat radiation. Additionally, cylindrical blanks are at risk of falling and being damaged during clamping. Summary of the Invention

[0003] The purpose of this invention is to solve the problems existing in the prior art, and to propose a forging fixture and friction press and its usage method.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A forging fixture includes a base for mounting a die holder, and further includes:

[0006] A clamping section is provided on one side of the base and is used to clamp and feed the round bar billet to the mold cavity of the mold base;

[0007] A displacement assembly is disposed within the base and is used to drive the clamping part to move along the length direction of the base;

[0008] A lifting assembly, which is mounted on a base, is used to lift the forging formed by forging a round bar billet within the die cavity;

[0009] The lifting component is connected to the displacement component.

[0010] Preferably, the displacement assembly includes a displacement motor fixed in the base, a first lead screw connected to the output shaft of the displacement motor and rotatably disposed in the base, and a first sleeve threadedly connected to the first lead screw, wherein the first sleeve is connected to the clamping part.

[0011] Preferably, the lifting assembly includes a second lead screw rotatably connected to the base, a second sleeve threadedly connected to the second lead screw, and a lifting rod fixedly connected to the second sleeve for lifting the forging. The lower end of the second lead screw is provided with a driven bevel gear, and the end of the first lead screw is provided with a driving bevel gear that meshes with the driven bevel gear.

[0012] Preferably, the lifting rod includes an elastic telescopic tube fixedly connected to the second sleeve, a retaining ring connected to the top of the elastic telescopic tube, and a lifting tube fixed to the top of the retaining ring. The elastic telescopic tube, the retaining ring, and the lifting tube are all sleeved on the outside of the second lead screw. The mold base has a movable groove for the movement of the retaining ring.

[0013] Preferably, the clamping part includes a connecting rod fixedly connected to the first sleeve, a U-shaped plate disposed on the top of the connecting rod, an arc-shaped clamping seat fixedly connected to the U-shaped plate, a rotating rod rotatably connected to the U-shaped plate, and an arc-shaped clamping plate disposed on the rotating rod. The arc-shaped clamping plate and the arc-shaped clamping seat together form a clamping cavity for placing round bar billets, and a feed port is provided on the upper side of the clamping cavity.

[0014] Preferably, a bracket is fixedly provided on the top of the base, and rack plates are provided on both the bracket and the outer side of the mold base. A first one-way gear meshing with the rack plate on the mold base and a second one-way gear meshing with the rack plate on the bracket are provided on the rotating rod. The locking directions of the first one-way gear and the second one-way gear are opposite. A support plate is fixedly provided on the outer side of the rotating rod, and a first elastic telescopic rod is fixedly provided on the support plate. The top of the first elastic telescopic rod is set as an arc surface. An upper positioning hole and a lower positioning hole that cooperate with the first elastic telescopic rod are provided on the U-shaped plate.

[0015] Preferably, a feeding push rod is fixedly provided on the U-shaped plate, a baffle plate is fixedly provided on the mold base to move against the round bar billet, a limiting groove is provided on the mold base to communicate with the mold cavity, a wedge-shaped limiting block with an extrusion inclined surface is slidably connected in the limiting groove, and an elastic element is provided between the wedge-shaped limiting block and the inner wall of the limiting groove.

[0016] Preferably, the support is fixed with a shell for placing round bar billets, and an L-shaped plate for separating the bottom opening of the shell and the feed inlet of the clamping cavity is slidably connected to the lower side of the shell. A second elastic telescopic rod is provided between the L-shaped plate and the shell, and a stop bar that moves against the U-shaped plate is also provided at the bottom of the L-shaped plate.

[0017] A friction press includes the forging fixture described above, and also includes a press body. The base is fixed on the worktable of the press body, and a discharge guide is provided on the side of the die holder away from the clamping part.

[0018] This invention also discloses a method of using a friction press, comprising the following steps:

[0019] S1: Initial state:

[0020] The clamping section is located below the material shell. The U-shaped plate abuts against the stop bar, the L-shaped plate opens, and the bottom round bar billet of the material shell falls into the clamping cavity.

[0021] S2: Synchronization stage of feeding and ejection:

[0022] Start the displacement motor, the first lead screw rotates and drives the first sleeve to move forward, and the clamping part moves towards the mold base;

[0023] The driving bevel gear at the end of the first lead screw drives the driven bevel gear, causing the second lead screw to rotate, the second sleeve to move upward, and the lifting rod to push the forging out of the mold cavity;

[0024] The lifting tube stops rising under the limit of the retaining ring and the movable groove. At this time, the forging is moved out of the mold cavity and the elastic telescopic tube is compressed and buffered.

[0025] S3: Forging blanking and billet positioning stage:

[0026] The clamping section continues to move forward, and the unloading push rod pushes the ejected forging laterally to the unloading guide table to slide down;

[0027] The first one-way gear meshes with the rack plate at the mold base, causing the arc-shaped clamping plate and the opening at the bottom of the arc-shaped clamping seat to open. The round bar blank slides down along the arc-shaped clamping seat to the top of the mold cavity, where the stop plate limits its movement.

[0028] At this time, the first elastic telescopic rod is inserted into the upper positioning hole to lock the position of the arc-shaped clamping plate and prevent it from pulling back the round bar billet when it moves back.

[0029] S4: Reset and Replenishment Stage

[0030] When the displacement motor reverses, the clamping part moves back, the second one-way gear meshes with the rack plate on the bracket, causing the arc-shaped clamping plate to reset and close, and the first elastic telescopic rod is inserted into the lower positioning hole.

[0031] The second sleeve moves down, the lifting rod completely exits the mold cavity, and the round bar billet falls into the mold cavity;

[0032] When the U-shaped plate returns, it abuts against the stop bar, and the L-shaped plate moves away from the bottom opening of the material shell, automatically replenishing the new billet into the clamping cavity;

[0033] S5: The press body forges the round bar blank in the mold cavity through the pressure seat, and repeats steps S1-S4 to forge the remaining round bar blanks.

[0034] As can be seen from the above technical solutions, the present invention has the following beneficial effects:

[0035] 1. In this invention, by automating the clamping, ejection and unloading of forging billets, the operator is completely isolated from the high-temperature workpiece, which solves the safety hazards and efficiency bottlenecks of traditional friction presses that rely on manual operation, and is especially suitable for the production of batch round bar billets;

[0036] 2. In this invention, when the first one-way gear moves forward, it meshes with the rack plate of the mold base, causing the arc-shaped clamping plate to open and release the forging; when the second one-way gear moves back, it meshes with the rack plate of the bracket, and the arc-shaped clamping plate resets to hold the new blank, so that the two one-way gear rack mechanisms ensure that the clamping cavity opens and closes at a specific stage, and the first elastic telescopic rod prevents the blank from falling off accidentally.

[0037] 3. In this invention, by flexibly setting the L-shaped plate, when the U-shaped plate abuts against the stop bar, the lower opening of the shell is connected to the clamping cavity of the clamping part, so that the round bar billet in the shell automatically falls into the clamping cavity to replenish the material; when the U-shaped plate does not abut against the stop bar and the die base is being loaded, the L-shaped plate is reset and the lower opening of the shell is blocked to prevent the billet in the shell from falling out and to ensure the orderly loading of the forging billet. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 This is a schematic diagram of the forging fixture of the present invention. Figure 1 ;

[0040] Figure 3 For the present invention Figure 2 Enlarged structural diagram of section A in the middle;

[0041] Figure 4 This is a schematic diagram of the forging fixture of the present invention. Figure 2 ;

[0042] Figure 5 This is a cross-sectional structural diagram of the forging fixture of the present invention;

[0043] Figure 6 For the present invention Figure 5 Enlarged structural diagram of section B in the middle;

[0044] Figure 7 For the present invention Figure 5 Enlarged structural diagram of section C;

[0045] Figure 8 This is a schematic diagram of the lifting rod of the present invention;

[0046] Figure 9 This is a schematic diagram of the clamping part of the present invention;

[0047] Figure 10 This is a schematic cross-sectional view of the U-shaped plate of the present invention;

[0048] Figure 11 This is a schematic diagram of the external structure of the rotating rod of the present invention.

[0049] In the diagram: 1. Base; 2. Mold base; 201. Mold cavity; 202. Movable groove; 203. Baffle plate; 204. Discharge guide; 3. Round bar billet; 4. Clamping part; 401. Connecting rod; 402. U-shaped plate; 4021. Upper positioning hole; 4022. Lower positioning hole; 403. Arc-shaped clamp; 404. Rotating rod; 405. Arc-shaped clamp; 5. Displacement motor; 501. First lead screw; 5011. Drive bevel gear; 502. First sleeve; 6. Second lead screw; 601. Second sleeve 602, Lifting rod; 6021, Elastic telescopic tube; 6022, Retaining ring; 6023, Lifting tube; 603, Driven bevel gear; 7, Bracket; 8, Rack plate; 9, First one-way gear; 901, Second one-way gear; 10, Support plate; 1001, First elastic telescopic rod; 11, Material push rod; 12, Material shell; 13, L-shaped plate; 131, Second elastic telescopic rod; 132, Stop bar; 14, Press body; 15, Limiting groove; 151, Wedge-shaped limiting block; 152, Elastic element. Detailed Implementation

[0050] A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0051] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0052] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7As shown, this embodiment proposes a forging fixture, including a base 1 for mounting a die holder 2, the die cavity 201 of which is used to accommodate a round bar billet 3 for forging. It also includes: a clamping part 4, disposed on one side of the base 1, for clamping the round bar billet 3 to the die cavity 201 of the die holder 2; a displacement assembly, disposed within the base 1, for driving the clamping part 4 to move along the length of the base 1; and a lifting assembly, disposed on the base 1, for lifting the forging formed from the round bar billet 3 within the die cavity 201. The lifting assembly is connected to the displacement assembly. Specifically, when removing the formed forging from the die cavity 201 and when repositioning the round bar billet 3 into the die cavity 201, the displacement assembly is controlled to move, driving the lifting assembly to lift the forging. The lifting assembly ejects the formed forging from the mold cavity 201, while the displacement assembly moves the clamping part 4 towards the mold base 2. As the clamping part 4 moves, it pushes the forging ejected by the lifting assembly to unload it. At the same time, the round bar billet 3 held by the clamping part 4 is automatically released to the upper side of the mold cavity 201. Subsequently, the displacement assembly drives the clamping part 4 and the lifting assembly to reset, and the round bar billet 3 automatically falls into the mold cavity 201. Through automated clamping, ejection, and unloading, the operator is completely isolated from the high-temperature workpiece, solving the safety hazards and efficiency bottlenecks of traditional friction presses that rely on manual operation. It is especially suitable for batch production of round bar billets. It should be noted that since the high-temperature billet is being processed and forged, the base 1, clamping part 4, displacement assembly, and lifting assembly should all be made of high-temperature resistant materials to prevent high-temperature expansion and deformation.

[0053] Reference Figure 2 , Figure 4 and Figure 5 As shown, in a preferred embodiment, based on the above method, the displacement assembly further includes a displacement motor 5 fixed in the base 1, a first lead screw 501 connected to the output shaft of the displacement motor 5 and rotatably disposed in the base 1, and a first sleeve 502 threadedly connected to the first lead screw 501. The first sleeve 502 is connected to the clamping part 4. The first lead screw 501 is made of high-temperature resistant material to avoid deformation due to heat. When the displacement motor 5 rotates forward, the first sleeve 502 moves forward along the axial direction of the first lead screw 501, pushing the clamping part 4 to move towards the mold base 2, so that the clamping part 4 pushes the round bar billet 3 directly above the mold cavity 201 of the mold base 2. The moving speed of the clamping part 4 does not need to be too fast. When rotating in reverse, it drives the clamping part 4 to reset, ensuring that the clamping cavity is aligned with the feed port of the material shell 12.

[0054] Reference Figure 5 and Figure 6As shown, in a preferred embodiment, based on the above method, the lifting assembly further includes a second lead screw 6 rotatably connected to the base 1, a second sleeve 601 threadedly connected to the second lead screw 6, and a lifting rod 602 fixedly connected to the second sleeve 601 for lifting the forging. The second lead screw 6 is made of high-strength alloy steel and is rotatably mounted in the base 1 via a bearing seat. A driven bevel gear 603 is provided at the lower end of the second lead screw 6, and a driving bevel gear 5011 meshing with the driven bevel gear 603 is provided at the end of the first lead screw 501; displacement electric... When the machine 5 drives the first lead screw 501 to rotate, the driving bevel gear 5011 drives the driven bevel gear 603 to rotate synchronously, so that the second lead screw 6 receives power input. The second sleeve 601 moves along the axial direction of the second lead screw 6, and the lifting rod 602 smoothly ejects the forging from the mold cavity 201. When the displacement motor 5 reverses, the second sleeve 601 drives the lifting rod 602 to retract to the bottom of the mold cavity 201, preparing for the next working cycle. Thus, the feeding and clamping of the round bar billet 3 and the ejection of the forging formed in the mold cavity 201 by the lifting assembly are carried out simultaneously, improving the working efficiency of the press.

[0055] Reference Figure 5 , Figure 6 and Figure 8 As shown, in a preferred embodiment, based on the above method, the lifting rod 602 further includes an elastic telescopic tube 6021 fixedly connected to the second sleeve 601, a retaining ring 6022 connected to the top of the elastic telescopic tube 6021, and a lifting tube 6023 fixedly disposed on the top of the retaining ring 6022. The elastic telescopic tube 6021, the retaining ring 6022, and the lifting tube 6023 are all sleeved on the outside of the second lead screw 6. A movable groove 202 for the movement of the retaining ring 6022 is provided in the mold base 2; the second sleeve 602... When the 01 moves upward, the lifting tube 6023 first contacts the bottom of the forging in the mold cavity 201, and the elastic telescopic tube 6021 is in a free state. After the lifting tube 6023 pushes the formed forging out of the mold cavity 201, the retaining ring 6022 abuts against the top inner wall of the movable groove 202, and the lifting tube 6023 can no longer move upward. The second sleeve 601 compresses the elastic telescopic tube 6021, and the elastic telescopic tube 6021 stores energy and absorbs the remaining kinetic energy. A high-temperature resistant helical spring is installed in the elastic telescopic tube 6021 to ensure its service life.

[0056] Reference Figure 2 , Figure 4 , Figure 5 , Figure 7 , Figure 9 and Figure 10As shown, in a preferred embodiment, based on the above method, the clamping part 4 further includes a connecting rod 401 fixedly connected to the first sleeve 502, a U-shaped plate 402 disposed on the top of the connecting rod 401, an arc-shaped clamping seat 403 fixedly connected to the U-shaped plate 402, a rotating rod 404 rotatably connected to the U-shaped plate 402, and an arc-shaped clamping plate 405 disposed on the rotating rod 404. The arc-shaped clamping plate 405 and the arc-shaped clamping seat 403 together form a clamping cavity for placing the round bar billet 3, and a feed port is provided on the upper side of the clamping cavity. When the clamping part 4 retracts to below the shell 12, the feed port aligns with the outlet of the shell 12, and the round bar billet 3 falls into the clamping cavity under the action of gravity. When the first sleeve 502 moves forward, the connecting rod 401 pushes the U-shaped plate 402 to move as a whole. The round bar billet 3 in the clamping cavity moves along a straight trajectory to the top of the mold base 2. After reaching the designated position, the rotating rod 404 rotates in the opposite direction to open the arc-shaped clamping plate 405. The round bar billet 3 falls freely from the bottom opening of the arc-shaped clamping plate 405 and the arc-shaped clamping base 403 and is placed on the upper side of the mold cavity 201, completing the material transfer.

[0057] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 9 , Figure 10 and Figure 11 As shown, in a preferred embodiment, based on the above method, a support 7 is fixedly provided on the top of the base 1. A rack plate 8 is provided on both the support 7 and the outer side of the mold base 2. A first one-way gear 9 that meshes with the rack plate 8 on the mold base 2 and a second one-way gear 901 that meshes with the rack plate 8 on the support 7 are provided on the rotating rod 404. The locking directions of the first one-way gear 9 and the second one-way gear 901 are opposite. The one-way gear is the prior art and will not be described in detail here. A support plate 10 is fixedly provided on the outer side of the rotating rod 404. A first elastic telescopic rod 1001 is fixedly provided on the support plate 10. The top of the first elastic telescopic rod 1001 is set as an arc surface. An upper positioning hole 4021 and a lower positioning hole 4022 that cooperate with the first elastic telescopic rod 1001 are provided on the U-shaped plate 402. A gear protective cover can also be provided on the outer side of the U-shaped plate 402 as needed.

[0058] Specifically, as the clamping part 4 continues to approach the mold base 2, the first one-way gear 9 on the rotating rod 404 meshes with the rack plate 8 on the mold base 2, causing the rotating rod 404 to drive the arc-shaped clamping plate 405 to rotate. The lower opening of the arc-shaped clamping plate 405 and the arc-shaped clamping seat 403 becomes larger. When the opening at the bottom of the arc-shaped clamping plate 405 and the arc-shaped clamping seat 403 satisfies the falling of the round bar billet 3, the round bar billet 3 is placed directly above the mold cavity 201. At this time, the first elastic telescopic rod 1001 is inserted into the upper positioning hole 4021 of the U-shaped plate 402, which restricts the position of the arc-shaped clamping plate 405 at this time, preventing the arc-shaped clamping plate 405 from pulling the round bar billet 3 back when it moves back with the first sleeve 502. Subsequently, the displacement motor 5 drives the first lead screw 501 to reverse, and the first sleeve 502 moves along the first When the lead screw 501 moves back, the second sleeve 601 moves down along the second lead screw 6. When the clamping part 4 moves back, the arc-shaped clamping plate 405 will not push back the round bar billet 3. As the second sleeve 601 moves down, the lifting rod 602 moves down, causing the round bar billet 3 to fall into the mold cavity 201. When the clamping part 4 moves back, the first one-way gear 9 idles and does not drive the rotating rod 404 to rotate. The second one-way gear 901 meshes with the rack plate 8 on the bracket 7, causing the rotating rod 404 to drive the arc-shaped clamping plate 405 to reset and rotate and re-form a clamping cavity with the arc-shaped clamping seat 403. The second one-way gear 901 no longer meshes with the rack plate 8. At this time, the first elastic telescopic rod 1001 is inserted into the lower positioning hole 4022. The head of the first elastic telescopic rod 1001 is tapered, which improves the guiding accuracy.

[0059] Reference Figure 2 , Figure 4 and Figure 5As shown, in a preferred embodiment, based on the above method, a further step is to fix a feeding push rod 11 on the U-shaped plate 402, a baffle plate 203 fixed on the mold base 2 to move against the round bar billet 3, a limiting groove 15 communicating with the mold cavity 201 on the mold base 2, a wedge-shaped limiting block 151 with a pressing slope on the top slidably connected in the limiting groove 15, and an elastic element 152 between the wedge-shaped limiting block 151 and the inner wall of the limiting groove 15; as the clamping part 4 continues to approach the mold base 2, the feeding push rod 11 on the U-shaped plate 402 pushes the forging that has moved out of the mold cavity 201 laterally, causing the forging to move to the other side of the mold base 2 and slide down from the feeding guide 204. The pressing slope of the wedge-shaped limiting block 151 is forced to avoid the clamping part 4. It should be noted that the height of the forging after forging is lower than the baffle plate 203. The baffle plate 203 ensures that the baffle plate 203 does not obstruct the lateral movement of the forging. When the openings at the bottom of the arc-shaped clamping plate 405 and the arc-shaped clamping seat 403 allow the round bar billet 3 to fall, the round bar billet 3 falls and is positioned directly above the die cavity 201. The baffle plate 203 can replace the arc-shaped clamping plate 405 to limit one side of the round bar billet 3. When the clamping part 4 moves back, the wedge-shaped limiting block 151 moves upward elastically, limiting the round bar billet 3 above the die seat 2. As the lifting rod 602 moves downward, the round bar billet 3 falls into the die cavity 201. During this period, the unloading push rod 11, due to its tortuous design, does not initially contact the billet and push it back. It should be noted that the baffle plate 203 and the wedge-shaped limiting block 151 do not obstruct the subsequent forging operation of the forging in the die cavity 201 by the press body 14.

[0060] Reference Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, in a preferred embodiment, based on the above method, a further step is to fix a shell 12 for placing the round bar billet 3 on the support 7. An L-shaped plate 13 for separating the bottom opening of the shell 12 and the feed inlet of the clamping cavity is slidably connected to the lower side of the shell 12. A second elastic telescopic rod 131 is provided between the L-shaped plate 13 and the shell 12. A stop rod 132 that moves against the U-shaped plate 402 is also provided at the bottom of the L-shaped plate 13. The inner cavity of the shell 12 is filled with the round bar billet 3, and the bottom opening of the L-shaped plate 13 is blocked by the action of the second elastic telescopic rod 131. When the clamping part 4 retracts to below the shell 12, the U-shaped plate 402 pushes the stop rod 132 to overcome the resistance of the second elastic telescopic rod 131, and the L-shaped plate 13 slides along the bottom of the shell 12, exposing the bottom opening of the shell 12, allowing a single round bar billet 3 to fall into the clamping cavity; when the clamping part 4 clamps and feeds the round bar billet 3, the stop rod 132 no longer abuts against the U-shaped plate 402, and the L-shaped plate 13 resets under the action of elastic force to re-close the bottom of the shell 12, preventing the billet inside the shell 12 from falling out. Rollers or polytetrafluoroethylene liners are added to the bottom outlet of the shell 12 to reduce the friction of the billet.

[0061] Reference Figure 1 and Figure 2 As shown, as a preferred embodiment, based on the above method, the present invention further discloses a friction press, including the aforementioned forging fixture, and also including a press body 14. The base 1 is fixed on the worktable surface of the press body 14, and the die holder 2 is provided with a discharge guide 204 on the side away from the clamping part 4. The press body 14 is the prior art, and the round bar billet 3 in the die cavity 201 is forged and formed by the upper pressure seat. When the formed forging is fed by the clamping part 4, it is pushed out and then pushed to the discharge guide 204 to fall.

[0062] This invention also discloses a method of using a friction press, comprising the following steps:

[0063] S1: Initial state:

[0064] The clamping part 4 is located below the shell 12. The U-shaped plate 402 abuts against the stop bar 132, the L-shaped plate 13 opens, and the bottom round bar billet 3 of the shell 12 falls into the clamping cavity.

[0065] S2: Synchronization stage of feeding and ejection:

[0066] Start the displacement motor 5, the first lead screw 501 rotates and drives the first sleeve 502 to move forward, and the clamping part 4 moves toward the mold base 2;

[0067] The driving bevel gear 5011 at the end of the first lead screw 501 drives the driven bevel gear 603, causing the second lead screw 6 to rotate, the second sleeve 601 to move upward, and the lifting rod 602 to push the forging out of the mold cavity 201.

[0068] The lifting tube 6023 stops rising under the limit of the retaining ring 6022 and the movable groove 202. At this time, the forging moves out of the mold cavity 201 and the elastic telescopic tube 6021 is compressed and buffered.

[0069] S3: Forging blanking and billet positioning stage:

[0070] The clamping section 4 continues to move forward, and the unloading push rod 11 pushes the ejected forging laterally to the unloading guide table 204 to slide down.

[0071] The first one-way gear 9 meshes with the rack plate 8 at the mold base 2, causing the arc-shaped clamping plate 405 and the opening at the bottom of the arc-shaped clamping seat 403 to open. The round bar blank 3 slides down along the arc-shaped clamping seat 403 to the top of the mold cavity 201, where the baffle plate 203 limits its movement.

[0072] At this time, the first elastic telescopic rod 1001 is inserted into the upper positioning hole 4021, locking the position of the arc-shaped clamp 405 to prevent it from pulling back the round bar billet 3 when it moves back.

[0073] S4: Reset and Replenishment Stage

[0074] When the displacement motor 5 reverses, the clamping part 4 moves back, the second one-way gear 901 meshes with the rack plate 8 on the bracket 7, so that the arc-shaped clamping plate 405 is reset and closed, and the first elastic telescopic rod 1001 is inserted into the lower positioning hole 4022.

[0075] The second sleeve 601 moves down, the lifting rod 602 completely exits the mold cavity 201, and the round bar billet 3 falls into the mold cavity 201;

[0076] When the U-shaped plate 402 returns, it abuts against the stop bar 132, and the L-shaped plate 13 moves away from the bottom opening of the material shell 12, automatically replenishing the new billet into the clamping cavity;

[0077] S5: The press body 14 forges the round bar blank 3 in the mold cavity 201 through the pressure seat, and repeats steps S1-S4 to forge the remaining round bar blanks 3.

[0078] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A forging fixture, comprising a base (1) for mounting a die holder (2), characterized in that, Also includes: The clamping part (4) is provided on one side of the base (1) and is used to clamp the round bar billet (3) to the mold cavity (201) of the mold base (2); The displacement assembly is disposed inside the base (1) and is used to drive the clamping part (4) to move along the length direction of the base (1); A lifting assembly is provided on a base (1) for lifting a forging made from a round bar billet (3) inside a die cavity (201); The lifting component is connected to the displacement component. The displacement assembly includes a displacement motor (5) fixed in the base (1), a first lead screw (501) connected to the output shaft of the displacement motor (5) and rotatably disposed in the base (1), and a first sleeve (502) threadedly connected to the first lead screw (501). The first sleeve (502) is connected to the clamping part (4). The lifting assembly includes a second lead screw (6) rotatably connected in the base (1), a second sleeve (601) threadedly connected to the second lead screw (6), and a lifting rod (602) fixedly connected to the second sleeve (601) and used for lifting the forging. The lower end of the second lead screw (6) is provided with a driven bevel gear (603). The end of the first lead screw (501) is provided with a driving bevel gear (5011) that meshes with the driven bevel gear (603); the lifting rod (602) includes an elastic telescopic tube (6021) fixedly connected to the second sleeve (601), a retaining ring (6022) connected to the top of the elastic telescopic tube (6021), and a lifting tube (6023) fixedly installed on the top of the retaining ring (6022). The elastic telescopic tube (6021), the retaining ring (6022), and the lifting tube (6023) are all sleeved on the outside of the second lead screw (6). The mold base (2) is provided with a movable groove (202) for the movement of the retaining ring (6022); the clamping part (4) includes a drive bevel gear (5011) that meshes with the driven bevel gear (603); the lifting rod (602) includes an elastic telescopic tube (6021) fixedly connected to the second sleeve (601), a retaining ring (6022) connected to the top of the elastic telescopic tube (6021), and a lifting tube (6023) fixedly installed on the top of the retaining ring (6022); the lifting rod (602) includes a drive bevel gear (5011) that meshes with the driven bevel gear (603); the lifting rod (602) includes a drive bevel gear (5011) that meshes with the driven bevel gear (603); the lifting rod (602) includes an elastic telescopic tube (6021) fixedly connected to the second sleeve (6021), a retaining ring (6022), and a lifting tube (6023) fixedly installed on the top of the retaining ring (6022); the lifting rod (602) includes a drive bevel gear (5011) that meshes with the driven bevel gear (603); the lifting rod (602) includes a drive bevel gear (5011 The first sleeve (502) is fixed to a connecting rod (401), a U-shaped plate (402) set on the top of the connecting rod (401), an arc-shaped clamp (403) fixed to the U-shaped plate (402), a rotating rod (404) rotatably connected to the U-shaped plate (402), and an arc-shaped clamp (405) set on the rotating rod (404). The arc-shaped clamp (405) and the arc-shaped clamp (403) together form a clamping cavity for placing the round bar billet (3). The upper side of the clamping cavity is provided with a feed port. The top of the base (1) is fixed with a bracket (7). The bracket (7) and the mold base (2) are both provided with rack plates (8). The rotating rod ( The rotating rod (404) is provided with a first one-way gear (9) that meshes with the rack plate (8) on the mold base (2) and a second one-way gear (901) that meshes with the rack plate (8) on the bracket (7). The locking directions of the first one-way gear (9) and the second one-way gear (901) are opposite. A support plate (10) is fixedly provided on the outside of the rotating rod (404). A first elastic telescopic rod (1001) is fixedly provided on the support plate (10). The top of the first elastic telescopic rod (1001) is set as an arc surface. An upper positioning hole (4021) and a lower positioning hole (4022) that cooperate with the first elastic telescopic rod (1001) are provided on the U-shaped plate (402).

2. The forging fixture according to claim 1, characterized in that, The U-shaped plate (402) is fixedly provided with a feeding push rod (11), the mold base (2) is fixedly provided with a baffle plate (203) that moves against the round bar billet (3), the mold base (2) is provided with a limiting groove (15) that communicates with the mold cavity (201), a wedge-shaped limiting block (151) with an extrusion slope on the top is slidably connected in the limiting groove (15), and an elastic element (152) is provided between the wedge-shaped limiting block (151) and the inner wall of the limiting groove (15).

3. A forging fixture according to claim 2, characterized in that, The bracket (7) is fixedly provided with a shell (12) for placing round bar billet (3). The lower side of the shell (12) is slidably connected with an L-shaped plate (13) for separating the bottom opening of the shell (12) and the feed inlet of the clamping cavity. A second elastic telescopic rod (131) is provided between the L-shaped plate (13) and the shell (12). The bottom of the L-shaped plate (13) is also provided with a stop rod (132) that moves against the U-shaped plate (402).

4. A friction press, comprising the forging fixture as described in claim 3, characterized in that, It also includes a press body (14), the base (1) is fixed on the worktable of the press body (14), and the mold base (2) is provided with a feeding guide (204) on the side away from the clamping part (4).

5. A method of using the friction press according to claim 4, characterized in that, Includes the following steps: S1: Initial state: The clamping part (4) is located below the shell (12), the U-shaped plate (402) abuts against the stop bar (132), the L-shaped plate (13) opens, and the bottom round bar billet (3) of the shell (12) falls into the clamping cavity; S2: Synchronization stage of feeding and ejection: Start the displacement motor (5), the first lead screw (501) rotates and drives the first sleeve (502) to move forward, and the clamping part (4) moves towards the mold base (2); The active bevel gear (5011) at the end of the first lead screw (501) drives the driven bevel gear (603), causing the second lead screw (6) to rotate, the second sleeve (601) to move upward, and the lifting rod (602) to push the forging out of the mold cavity (201). The lifting tube (6023) stops rising under the limit of the retaining ring (6022) and the movable groove (202). At this time, the forging moves out of the mold cavity (201) and the elastic telescopic tube (6021) is compressed and buffered. S3: Forging blanking and billet positioning stage: The clamping section (4) continues to move forward, and the unloading push rod (11) pushes the ejected forging laterally to the unloading guide table (204) to slide down; The first one-way gear (9) meshes with the rack plate (8) at the mold base (2), causing the arc-shaped clamping plate (405) and the opening at the bottom of the arc-shaped clamping seat (403) to open. The round bar blank (3) slides down along the arc-shaped clamping seat (403) to the top of the mold cavity (201), and the baffle plate (203) limits it. At this time, the first elastic telescopic rod (1001) is inserted into the upper positioning hole (4021) to lock the position of the arc-shaped clamp (405) and prevent it from pulling back the round bar blank (3) when it moves back; S4: Reset and Replenishment Stage The displacement motor (5) reverses, the clamping part (4) moves back, the second one-way gear (901) meshes with the rack plate (8) on the bracket (7), so that the arc-shaped clamp (405) is reset and closed, and the first elastic telescopic rod (1001) is inserted into the lower positioning hole (4022). The second sleeve (601) moves down, the lifting rod (602) completely exits the mold cavity (201), and the round bar blank (3) falls into the mold cavity (201). When the U-shaped plate (402) returns, it abuts against the stop bar (132), and the L-shaped plate (13) moves away from the bottom opening of the material shell (12) and automatically fills the clamping cavity with new billet; S5: The press body (14) forges the round bar blank (3) in the mold cavity (201) through the pressure seat, and repeats steps S1-S4 to forge the remaining round bar blanks (3).

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