Forging clamp, friction press and using method of friction press

Abstract

The invention discloses a forging clamp, a friction press and a using method of the friction press, and belongs to the technical field of presses. A forging and pressing clamp comprises a base used for installing a die holder, and further comprises a clamping and conveying part arranged on one side of the base and used for clamping and conveying a round bar blank to a die cavity of the die holder, and a clamping and conveying part arranged on the other side of the base and used for clamping and conveying the round bar blank to the die cavity of the die holder. The displacement assembly is arranged in the base and used for driving the clamping and conveying part to move in the length direction of the base; the jacking assembly is arranged on the base and used for jacking a forge piece formed by forging and pressing a round bar blank in the die cavity; wherein the jacking assembly is connected with the displacement assembly; by means of automatic clamping, ejecting and discharging, operators and high-temperature workpieces are completely isolated, the potential safety hazards and the efficiency bottleneck caused by the fact that a traditional friction press depends on manual operation are solved, and the machine is particularly suitable for batch production of round bar blanks.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of press machine, in particular to a forging clamp, a friction press and a use method thereof. BACKGROUND

[0002] The friction press is a kind of universal press processing machine, which is widely used in various industries of press processing. In the mechanical manufacturing industry, the friction press is more widely used to complete die forging, upsetting, bending, correction, precision pressing and other work. The existing friction press usually uses artificial holding clamp to move the workpiece from the mold and place the blank in the mold for die casting. The operation is inconvenient, especially for the workpiece after high temperature heating. The operator will suffer the risk of skin burn caused by the heat radiation of the workpiece. At the same time, the cylindrical blank will be damaged during the clamping operation. SUMMARY

[0003] The present application aims at solving the problems in the prior art and provides a forging clamp, a friction press and a use method thereof.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme: A forging clamp, comprising a base for mounting a die holder, further comprising: 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; 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; The jacking assembly is connected with the displacement assembly.

[0005] Preferably, the displacement assembly comprises a displacement motor fixed in the base, a first lead screw rotatably arranged in the base and connected with the output shaft of the displacement motor, and a first sleeve threadedly connected with the first lead screw, the first sleeve being connected with the clamping and feeding part.

[0006] Preferably, the jacking assembly comprises a second lead screw rotatably connected in the base, a second sleeve threadedly connected with the second lead screw, and a jacking rod fixedly connected with the second sleeve and used for jacking the forged piece, the lower end of the second lead screw being provided with a driven bevel gear, and the end of the first lead screw being provided with a driving bevel gear meshing with the driven bevel gear.

[0007] Preferably, the jacking rod comprises an elastic telescopic pipe fixedly connected with the second sleeve, a stop ring connected with the top of the elastic telescopic pipe and a jacking pipe fixedly arranged on the top of the stop ring, and the elastic telescopic pipe, the stop ring and the jacking pipe are all arranged outside the second lead screw, and the movable groove is arranged in the mold base for the movement of the stop ring.

[0008] Preferably, the pinch portion comprises a connecting rod fixedly connected with the first sleeve, a U-shaped plate arranged on the top of the connecting rod, an arc-shaped clamping seat fixedly connected with the U-shaped plate, a rotating rod rotatably connected with the U-shaped plate and an arc-shaped clamping plate arranged on the rotating rod, the arc-shaped clamping plate and the arc-shaped clamping seat jointly form a clamping cavity for placing the round bar blank, and the upper side of the clamping cavity is provided with a feeding port.

[0009] Preferably, the top of the base is fixedly provided with a support, the support and the outer side of the mold base are both provided with a rack plate, the rotating rod is provided with 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 support, the locking directions of the first one-way gear and the second one-way gear are opposite, the outer side of the rotating rod is fixedly provided with a support plate, the support plate is fixedly provided with a first elastic telescopic rod, the top of the first elastic telescopic rod is provided as a circular arc surface, and the U-shaped plate is provided with an upper positioning hole and a lower positioning hole matched with the first elastic telescopic rod.

[0010] Preferably, the U-shaped plate is fixedly provided with a blank pushing rod, the mold base is fixedly provided with a blank stopping plate movably abutting against the round bar blank, the mold base is provided with a limiting groove in communication with the mold cavity, a wedge-shaped limiting block with an extrusion inclined surface arranged on the top is slidably connected in the limiting groove, and an elastic element is arranged between the wedge-shaped limiting block and the inner wall of the limiting groove.

[0011] Preferably, the support is fixedly provided with a material shell for placing the round bar blank, the lower side of the material shell is slidably connected with an L-shaped plate for separating the opening at the bottom of the material shell and the feeding port of the clamping cavity, a second elastic telescopic rod is arranged between the L-shaped plate and the material shell, and the bottom of the L-shaped plate is further provided with a stopping rod movably abutting against the U-shaped plate.

[0012] A friction press comprises the forging and pressing clamp and further comprises a press body, the base is fixedly arranged on the workbench surface of the press body, and the mold base is provided with a blank guiding table on the side away from the pinch portion.

[0013] The application further discloses a use method of the friction press. S1: initial state The pinch portion is located below the material shell, the U-shaped plate abuts against the stopping rod, the L-shaped plate is opened, and the round bar blank at the bottom of the material shell falls into the clamping cavity. S2: synchronization stage of pinching and ejecting The displacement motor is started, the first sleeve is moved forward by the rotation of the first screw rod, and the clamp moves towards the die holder; The driving bevel gear at the end of the first screw rod drives the driven bevel gear to rotate the second screw rod, the second sleeve moves up, and the lifting rod lifts the forging out of the die cavity; The lifting pipe stops rising under the limiting of the blocking ring and the movable groove, at this time, the forging moves out of the die cavity, and the elastic telescopic pipe is compressed and buffered; S3: blanking and blank positioning stage: The clamp continues to move forward, the blanking push rod pushes the lifted forging horizontally to the blanking guide rail to slide off; The first one-way gear meshes with the rack plate at the die holder, the arc-shaped clamp plate is opened with the opening at the bottom of the arc-shaped clamp holder, the round bar blank slides along the arc-shaped clamp holder to the top of the die cavity, and the blocking plate limits it; At this time, the first elastic telescopic rod is inserted into the upper positioning hole to lock the position of the arc-shaped clamp plate to prevent it from moving back and pulling the round bar blank back; S4: reset and replenishment stage: The displacement motor is reversed, the clamp moves back, the second one-way gear meshes with the rack plate on the support to reset and close the arc-shaped clamp plate, and the first elastic telescopic rod is inserted into the lower positioning hole; The second sleeve moves down, the lifting rod completely exits the die cavity, and the round bar blank falls into the die cavity; When the U-shaped plate returns, it abuts against the blocking rod, the L-shaped plate is away from the opening at the bottom of the material shell, and new blank is automatically supplemented into the clamping cavity; S5: the round bar blank in the die cavity is forged and formed by the press body through the pressing seat, and steps S1-S4 are repeated to perform forging work on the remaining round bar blanks.

[0014] From the above technical solution, the present application has the following beneficial effects: 1. In the present application, the blank is automatically clamped, ejected and blanked, which completely isolates the operator from the high-temperature workpiece, solves the safety hidden danger and efficiency bottleneck of the traditional friction press relying on manual operation, and is especially suitable for batch production of round bar blanks; 2. In the present application, when the first one-way gear moves forward, it meshes with the rack plate of the die holder to open the arc-shaped clamp plate and release the forging; when the second one-way gear moves back, it meshes with the rack plate of the support to reset the arc-shaped clamp plate and clamp the new blank, so that the two one-way gear rack mechanisms ensure that the clamping cavity is opened and closed at a specific stage, and the first elastic telescopic rod prevents the blank from falling off accidentally; 3. In the present application, the L-shaped plate is elastically arranged, when the U-shaped plate abuts against the blocking rod, the opening at the lower side of the material shell is connected with the clamping cavity of the clamp to make the round bar blank in the material shell automatically fall into the clamping cavity for replenishment; when the U-shaped plate does not abut against the blocking rod for die holder feeding, the L-shaped plate resets and blocks the opening at the lower side of the material shell to prevent the blank in the material shell from falling off, and ensures the orderly feeding of the blank of the forging. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The overall structure of the present application is shown in the schematic diagram. Figure 2 The structure of the forging clamp of the present application is shown in the schematic diagram Figure 1 ; Figure 3 The structure of the present application is shown in the schematic diagram Figure 2 A part of the present application is shown in the enlarged schematic diagram. Figure 4 The structure of the forging clamp of the present application is shown in the schematic diagram Figure 2 ; Figure 5 The cross-sectional structure of the forging clamp of the present application is shown in the schematic diagram. Figure 6 The structure of the present application is shown in the schematic diagram Figure 5 A part of the present application is shown in the enlarged schematic diagram. Figure 7 The structure of the present application is shown in the schematic diagram Figure 5 A part of the present application is shown in the enlarged schematic diagram. Figure 8 The structure of the present application is shown in the schematic diagram. Figure 9 The structure of the present application is shown in the schematic diagram. Figure 10 The cross-sectional structure of the present application is shown in the schematic diagram. Figure 11 The external structure of the present application is shown in the schematic diagram.

[0016] In the figure: 1, base; 2, die holder; 201, die cavity; 202, movable groove; 203, material blocking plate; 204, blanking guide; 3, round bar blank; 4, pinch section; 401, connecting rod; 402, U-shaped plate; 4021, upper positioning hole; 4022, lower positioning hole; 403, arc-shaped clamping seat; 404, rotating rod; 405, arc-shaped clamping plate; 5, displacement motor; 501, first lead screw; 5011, driving bevel gear; 502, first sleeve; 6, second lead screw; 601, second sleeve; 602, jacking rod; 6021, elastic telescopic tube; 6022, blocking ring; 6023, jacking tube; 603, driven bevel gear; 7, support; 8, rack plate; 9, first one-way gear; 901, second one-way gear; 10, support plate; 1001, first elastic telescopic rod; 11, blanking push rod; 12, material shell; 13, L-shaped plate; 131, second elastic telescopic rod; 132, blocking rod; 14, press body; 15, limiting groove; 151, wedge-shaped limiting block; 152, elastic element. DETAILED DESCRIPTION

[0017] A preferred embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0018] To achieve the above object, embodiments of the present application adopt the following technical solutions: Referring to Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 , the present embodiment proposes a forging clamp, which comprises a base 1 for mounting a die holder 2, a die cavity 201 of the die holder 2 for accommodating a round bar blank 3 for forging forming, further comprising: a clamping part 4 arranged on one side of the base 1 for clamping and feeding the round bar blank 3 to the die cavity 201 of the die holder 2; a displacement assembly arranged in the base 1 for driving the clamping part 4 to displace along the length direction of the base 1; and a jacking assembly arranged on the base 1 for jacking the forged piece formed by the round bar blank 3 in the die cavity 201; wherein the jacking assembly is connected with the displacement assembly; specifically, when the formed forged piece in the die cavity 201 is taken out and the round bar blank 3 is placed into the die cavity 201 again, the displacement assembly is controlled to act, the displacement assembly drives the jacking assembly to act, the jacking assembly ejects the formed forged piece in the die cavity 201, at the same time, the displacement assembly drives the clamping part 4 to displace to the die holder 2, the clamping part 4 pushes the forged piece ejected by the jacking assembly to unload, at the same time, the round bar blank 3 clamped by the clamping part 4 is automatically released to the upper side of the die cavity 201, then the displacement assembly drives the clamping part 4 and the jacking assembly to reset, the round bar blank 3 automatically falls into the die cavity 201, through automatic clamping, ejecting and unloading, the operator is completely isolated from the high-temperature workpiece, the safety hidden danger and efficiency bottleneck of the traditional friction press relying on manual operation are solved, and it is especially suitable for batch production of round bar blanks; it should be noted that since the high-temperature blank is processed and forged, the base 1, the clamping part 4, the displacement assembly and the jacking assembly should all be made of high-temperature resistant materials to prevent high-temperature expansion deformation.

[0019] Referring to Figure 2 , Figure 4 and Figure 5 , as a preferred embodiment, on the basis of the above-mentioned mode, further, the displacement assembly comprises a displacement motor 5 fixed in the base 1, a first lead screw 501 connected with the output shaft of the displacement motor 5 and rotatingly arranged in the base 1, and a first sleeve 502 threadedly connected with the first lead screw 501, the first sleeve 502 is connected with the clamping part 4, the first lead screw 501 is made of high-temperature resistant material to avoid thermal deformation; when the displacement motor 5 rotates forward, the first sleeve 502 moves forward along the first lead screw 501 in the axial direction, pushes the clamping part 4 to displace to the die holder 2, so that the clamping part 4 pushes the round bar blank 3 to the position directly above the die cavity 201 of the die holder 2, the moving speed of the clamping part 4 does not need to be too fast; when it is reversed, the clamping part 4 is reset to ensure that the clamping cavity is aligned with the material shell 12 feeding port.

[0020] Referring to Figure 5 and Figure 6As shown, as a preferred embodiment, on the basis of the above-mentioned mode, further, the jacking assembly comprises a second lead screw 6 rotatably connected in the base 1, a second sleeve 601 threadedly connected with the second lead screw 6, and a jacking rod 602 fixedly connected with the second sleeve 601 and used for jacking the forging; the second lead screw 6 is made of high-strength alloy steel and is rotatably installed in the base 1 through a bearing seat, the lower end of the second lead screw 6 is provided with a driven bevel gear 603, and the end of the first lead screw 501 is provided with a driving bevel gear 5011 engaged with the driven bevel gear 603; when the displacement motor 5 drives the first lead screw 501 to rotate, the driving bevel gear 5011 drives the driven bevel gear 603 to synchronously rotate, so that the second lead screw 6 obtains power input, the second sleeve 601 moves along the second lead screw 6 in the axial direction, and the jacking rod 602 stably jacks the forging out of the mold cavity 201; when the displacement motor 5 reverses, the second sleeve 601 drives the jacking rod 602 to retreat to the bottom of the mold cavity 201, so as to prepare for the next working cycle; so that the clamping and feeding of the round bar blank 3 and the jacking of the formed forging in the mold cavity 201 are simultaneously performed, and the working efficiency of the press is improved.

[0021] Referring to Figure 5 , Figure 6 and Figure 8 As shown, as a preferred embodiment, on the basis of the above-mentioned mode, further, the jacking rod 602 comprises an elastic telescopic pipe 6021 fixedly connected with the second sleeve 601, a blocking ring 6022 connected with the top of the elastic telescopic pipe 6021, and a jacking pipe 6023 fixedly arranged at the top of the blocking ring 6022; the elastic telescopic pipe 6021, the blocking ring 6022 and the jacking pipe 6023 are all arranged outside the second lead screw 6, and the mold seat 2 is provided with a movable groove 202 for the movement of the blocking ring 6022; when the second sleeve 601 moves upward, the jacking pipe 6023 first contacts the bottom of the forging in the mold cavity 201, and the elastic telescopic pipe 6021 is in a free state; when the jacking pipe 6023 jacks the formed forging out of the mold cavity 201, the blocking ring 6022 abuts against the inner wall at the top of the movable groove 202, so that the jacking pipe 6023 cannot continue to move upward, the second sleeve 601 compresses the elastic telescopic pipe 6021, the elastic telescopic pipe 6021 stores energy by compression, absorbs the residual kinetic energy, and a high-temperature-resistant spiral spring arranged in the elastic telescopic pipe 6021 ensures the service life thereof.

[0022] Referring to Figure 2 , Figure 4 , Figure 5 , Figure 7 , Figure 9 and Figure 10As shown, as a preferred embodiment, on the basis of the above-mentioned mode, further, the clamping part 4 comprises a connecting rod 401 fixedly connected with the first sleeve 502, a U-shaped plate 402 arranged at the top of the connecting rod 401, an arc-shaped clamping seat 403 fixedly connected with the U-shaped plate 402, a rotating rod 404 rotatably connected with the U-shaped plate 402, and an arc-shaped clamping plate 405 arranged on the rotating rod 404, the arc-shaped clamping plate 405 and the arc-shaped clamping seat 403 jointly form a clamping cavity for placing the round bar blank 3, and the upper side of the clamping cavity is provided with a feeding port; when the clamping part 4 retreats below the material shell 12, the feeding port is aligned with the outlet of the material shell 12, the round bar blank 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 displace as a whole, the round bar blank 3 in the clamping cavity moves along a straight track to above the die seat 2, after reaching the designated position, the rotating rod 404 reversely rotates to open the arc-shaped clamping plate 405, the round bar blank 3 is placed on the upper side of the die cavity 201 by the arc-shaped clamping plate 405 and the bottom opening of the arc-shaped clamping seat 403 through free fall, and the material transfer is completed.

[0023] Referring to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 9 , Figure 10 and Figure 11 As shown, as a preferred embodiment, on the basis of the above-mentioned mode, further, the top of the base 1 is fixedly provided with a support 7, the support 7 and the outer side of the die seat 2 are both provided with a rack plate 8, the rotating rod 404 is provided with a first one-way gear 9 engaged with the rack plate 8 on the die seat 2 and a second one-way gear 901 engaged with the rack plate 8 on the support 7, the locking directions of the first one-way gear 9 and the second one-way gear 901 are opposite, the one-way gears are prior art, and will not be described in detail here, the outer side of the rotating rod 404 is fixedly provided with a support plate 10, the support plate 10 is fixedly provided with a first elastic telescopic rod 1001, the top of the first elastic telescopic rod 1001 is provided with a circular arc surface, the U-shaped plate 402 is provided with an upper positioning hole 4021 and a lower positioning hole 4022 matched with the first elastic telescopic rod 1001, and a gear protection cover can also be arranged on the outer side of the U-shaped plate 402 according to needs; Specifically, as the clamping part 4 continuously approaches the die holder 2, the first one-way gear 9 on the rotating rod 404 meshes with the rack plate 8 on the die holder 2, so that the rotating rod 404 drives the arc-shaped clamping plate 405 to rotate. The arc-shaped clamping plate 405 and the arc-shaped clamping seat 403 on the lower side of the opening become larger. When the arc-shaped clamping plate 405 and the opening at the bottom of the arc-shaped clamping seat 403 satisfy the falling of the round bar blank 3, the round bar blank 3 is placed directly above the die cavity 201. At this time, the first elastic expansion rod 1001 is inserted into the upper positioning hole 4021 of the U-shaped plate 402, and the position of the arc-shaped clamping plate 405 is limited, so as to avoid the arc-shaped clamping plate 405 from pushing the round bar blank 3 back when the first sleeve 502 moves back. Then the displacement motor 5 drives the first lead screw 501 to reverse, the first sleeve 502 moves back along the first lead screw 501, and 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 the round bar blank 3 back. As the second sleeve 601 moves down, the jacking rod 602 moves down, so that the round bar blank 3 falls into the die cavity 201. When the clamping part 4 moves back, the first one-way gear 9 idles and will not drive the rotating rod 404 to rotate. The second one-way gear 901 meshes with the rack plate 8 on the bracket 7, so that the rotating rod 404 drives the arc-shaped clamping plate 405 to rotate and re-forms the 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 expansion rod 1001 is inserted into the lower positioning hole 4022. The head of the first elastic expansion rod 1001 is tapered, which improves the guiding accuracy.

[0024] Referring to Figure 2 , Figure 4 and Figure 5As shown, as a preferred embodiment, on the basis of the above mode, further, the U-shaped plate 402 is fixed with a blank pushing rod 11, the die holder 2 is fixed with a blank stopping plate 203 which is in movable abutment with the round bar blank 3, the die holder 2 is provided with a limiting groove 15 which is in communication with the die cavity 201, the limiting groove 15 is slidably connected with a wedge-shaped limiting block 151 which is provided with an extrusion inclined surface at the top, and the wedge-shaped limiting block 151 and the inner wall of the limiting groove 15 are provided with an elastic element 152; with the continuous approach of the clamping and conveying part 4 to the die holder 2, the blank pushing rod 11 on the U-shaped plate 402 pushes the forgings moved out of the die cavity 201 horizontally, so that the forgings are moved to the other side of the die holder 2 and fall off from the blank guide 204, and the extrusion inclined surface of the wedge-shaped limiting block 151 is stressed to avoid the clamping and conveying part 4; it should be noted that the height of the forgings after forging is lower than the blank stopping plate 203, so that the blank stopping plate 203 will not hinder the horizontal movement of the forgings; when the opening at the bottom of the arc-shaped clamping seat 403 and the arc-shaped clamping plate 405 satisfy the falling of the round bar blank 3, the round bar blank 3 falls and is placed directly above the die cavity 201, and the blank stopping plate 203 can limit one side of the round bar blank 3 instead of the arc-shaped clamping plate 405; when the clamping and conveying part 4 moves back, the wedge-shaped limiting block 151 is elastically moved upward, and the round bar blank 3 is limited above the die holder 2; with the downward movement of the jacking rod 602, the round bar blank 3 falls into the die cavity 201; during this period, the blank pushing rod 11 will not abut against and push back the blank due to the zigzag arrangement; it should be noted that the arrangement of the blank stopping plate 203 and the wedge-shaped limiting block 151 will not hinder the subsequent forging work of the forgings in the die cavity 201 by the press body 14.

[0025] Referring to Figure 2 , Figure 4 , Figure 5 and Figure 7 As a preferred embodiment, on the basis of the above mode, further, the bracket 7 is fixed with a blank shell 12 for placing the round bar blank 3, the lower side of the blank shell 12 is slidably connected with an L-shaped plate 13 for separating the bottom opening of the blank shell 12 and the feeding port of the clamping cavity, the L-shaped plate 13 and the blank shell 12 are provided with a second elastic expansion rod 131, and the bottom of the L-shaped plate 13 is further provided with a blocking rod 132 which is in movable abutment with the U-shaped plate 402; the inner cavity of the blank shell 12 is filled with the round bar blanks 3, and the L-shaped plate 13 blocks the bottom opening under the action of the second elastic expansion rod 131; when the clamping and conveying part 4 moves back below the blank shell 12, the U-shaped plate 402 pushes the blocking rod 132 to overcome the resistance of the second elastic expansion rod 131, the L-shaped plate 13 slides along the bottom of the blank shell 12, and the bottom opening of the blank shell 12 is exposed, allowing a single round bar blank 3 to fall into the clamping cavity; when the clamping and conveying part 4 clamps and conveys the round bar blank 3, the blocking rod 132 no longer abuts against the U-shaped plate 402, and the L-shaped plate 13 is reset to close the bottom of the blank shell 12 again under the action of the elastic force, so as to avoid the blank in the blank shell 12 from falling off, and the outlet of the bottom of the blank shell 12 is additionally provided with a roller or a polytetrafluoroethylene lining plate to reduce the friction of the blank.

[0026] Referring to Figure 1 and Figure 2 As shown in the preferred embodiment, on the basis of the above-mentioned mode, further, the application discloses a friction press, comprising the above-mentioned forging clamp, further comprising a press body 14, the base 1 is fixedly arranged on the workbench of the press body 14, and the die holder 2 is provided with a discharging guide table 204 away from one side of the clamping and feeding part 4; the press body 14 is a prior art, and the round bar blank 3 in the die cavity 201 is forged and formed through the upper pressing seat, and the formed forging is ejected when being fed on the clamping and feeding part 4 and then pushed to the discharging guide table 204 to fall.

[0027] The application further discloses a use method of the friction press, comprising the following steps: S1: initial state: The clamping and feeding part 4 is located below the material shell 12, the U-shaped plate 402 abuts against the stop rod 132, the L-shaped plate 13 is opened, and the round bar blank 3 at the bottom of the material shell 12 falls into the clamping cavity; S2: clamping and feeding and ejecting synchronization stage: The displacement motor 5 is started, the first lead screw 501 rotates to drive the first sleeve 502 to move forward, and the clamping and feeding part 4 moves towards the die holder 2; The driving bevel gear 5011 at the end of the first lead screw 501 drives the driven bevel gear 603, so that the second lead screw 6 rotates, the second sleeve 601 moves upwards, and the lifting rod 602 ejects the forging from the die cavity 201; The lifting pipe 6023 stops rising under the limiting of the stop ring 6022 and the movable groove 202, at this time, the forging moves out of the die cavity 201, and the elastic telescopic pipe 6021 is compressed and buffered; S3: forging discharging and blank positioning stage: The clamping and feeding part 4 continues to move forward, and the discharging push rod 11 horizontally pushes the ejected forging to the discharging guide table 204 to slide and fall; The first one-way gear 9 meshes with the rack plate 8 at the die holder 2, so that the arc-shaped clamping plate 405 and the opening at the bottom of the arc-shaped clamping seat 403 are opened, the round bar blank 3 slides along the arc-shaped clamping seat 403 to the position directly above the die cavity 201, and the material stopping plate 203 limits the round bar blank 3; 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 clamping plate 405 to prevent the arc-shaped clamping plate 405 from moving back and pushing the round bar blank 3 back; S4: reset and replenishment stage: The displacement motor 5 is reversed, the clamping and feeding part 4 moves back, the second one-way gear 901 meshes with the rack plate 8 on the support 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; The second sleeve 601 moves downwards, the lifting rod 602 completely exits the die cavity 201, and the round bar blank 3 falls into the die cavity 201; When the U-shaped plate 402 returns, it abuts against the stop rod 132, and the L-shaped plate 13 is away from the opening at the bottom of the material shell 12, thereby automatically supplementing new blank material into the clamping cavity; S5: The press body 14 is used to forge and form the round bar blank 3 in the die cavity 201 through the pressure seat, and the steps S1-S4 are repeated to perform forging work on the remaining round bar blanks 3.

[0028] The above-described embodiments are merely used to describe the preferred embodiments of the present application, and are not used to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope of the present application as defined by the claims.

Claims

1. A forging clamp comprising a base (1) for mounting a die shoe (2), characterized in that, Also include: A pinch part (4) is arranged on one side of the base (1), used for clamping the round bar blank (3) to the die cavity (201) of the die holder (2); A displacement assembly is arranged in the base (1), used for driving the pinch part (4) to displace along the length direction of the base (1); A jacking assembly is arranged on the base (1), used for jacking the forged piece forged by the round bar blank (3) in the die cavity (201); Wherein, the jacking assembly is connected with the displacement assembly.

2. A swage clamp according to claim 1, wherein The displacement assembly includes a displacement motor (5) fixed in the base (1), a first lead screw (501) connected with the output shaft of the displacement motor (5) and rotatably arranged in the base (1), and a first sleeve (502) threadedly connected with the first lead screw (501), the first sleeve (502) is connected with the pinch part (4).

3. A swage clamp according to claim 2, wherein The jacking assembly includes a second lead screw (6) rotatably connected in the base (1), a second sleeve (601) threadedly connected with the second lead screw (6), and a jacking rod (602) fixedly connected with the second sleeve (601) and used for jacking the forged piece, the lower end of the second lead screw (6) is provided with a driven bevel gear (603), and the end of the first lead screw (501) is provided with a driving bevel gear (5011) meshing with the driven bevel gear (603).

4. A swage clamp according to claim 3, wherein The jacking rod (602) includes an elastic telescopic pipe (6021) fixedly connected with the second sleeve (601), a stop ring (6022) connected with the top of the elastic telescopic pipe (6021), and a jacking pipe (6023) fixedly arranged on the top of the stop ring (6022), the elastic telescopic pipe (6021), the stop ring (6022) and the jacking pipe (6023) are all sleeved outside the second lead screw (6), and the die holder (2) is provided with a movable groove (202) for the movement of the stop ring (6022).

5. A swage clamp according to claim 4, wherein, The pinch part (4) includes a connecting rod (401) fixedly connected with the first sleeve (502), a U-shaped plate (402) arranged on the top of the connecting rod (401), an arc-shaped clamp holder (403) fixedly connected with the U-shaped plate (402), a rotating rod (404) rotatably connected with the U-shaped plate (402), and an arc-shaped clamp plate (405) arranged on the rotating rod (404), the arc-shaped clamp plate (405) and the arc-shaped clamp holder (403) form a clamping cavity for placing the round bar blank (3), and the upper side of the clamping cavity is provided with a feeding port.

6. A swage clamp according to claim 5, wherein, The top of the base (1) is fixed with a support (7), the support (7) and the outer side of the mold base (2) are provided with a rack plate (8), the rotating rod (404) is provided with a first one-way gear (9) engaged with the rack plate (8) on the mold base (2) and a second one-way gear (901) engaged with the rack plate (8) on the support (7), the locking directions of the first one-way gear (9) and the second one-way gear (901) are opposite, the outer side of the rotating rod (404) is fixed with a support plate (10), the support plate (10) is fixed with a first elastic telescopic rod (1001), the top of the first elastic telescopic rod (1001) is provided as a circular arc surface, the U-shaped plate (402) is provided with an upper positioning hole (4021) and a lower positioning hole (4022) matched with the first elastic telescopic rod (1001).

7. A swage clamp according to claim 6, wherein The U-shaped plate (402) is fixed with a blank pushing rod (11), the mold base (2) is fixed with a material blocking plate (203) movably abutting against the round bar blank (3), the mold base (2) is provided with a limiting groove (15) communicating with the mold cavity (201), the limiting groove (15) is slidably connected with a wedge-shaped limiting block (151) provided with an extrusion inclined surface at the top, and an elastic element (152) is arranged between the wedge-shaped limiting block (151) and the inner wall of the limiting groove (15).

8. A swage clamp according to claim 7, wherein The support (7) is fixed with a material shell (12) for placing the round bar blank (3), the lower side of the material shell (12) is slidably connected with an L-shaped plate (13) for separating the opening at the bottom of the material shell (12) and the feeding port of the clamping cavity, and a second elastic telescopic rod (131) is arranged between the L-shaped plate (13) and the material shell (12). The bottom of the L-shaped plate (13) is further provided with a stop rod (132) movably abutting against the U-shaped plate (402).

9. A friction press comprising a swage clamp according to claim 8, characterized in that Further comprising a press body (14), the base (1) is fixed on the workbench of the press body (14), and the side of the mold base (2) away from the pinch (4) is provided with a blank guide table (204).

10. A method of using a friction press according to claim 9, characterized in that, The method comprises the following steps: S1: initial state: The pinch (4) is located below the material shell (12), the U-shaped plate (402) abuts against the stop rod (132), the L-shaped plate (13) is opened, and the round bar blank (3) at the bottom of the material shell (12) falls into the clamping cavity; S2: clamping and ejecting synchronously: Start the displacement motor (5), the first sleeve (502) moves forward under the rotation of the first screw rod (501), and the pinch (4) moves to the mold base (2); The driving bevel gear (5011) at the end of the first screw rod (501) drives the driven bevel gear (603), so that the second screw rod (6) rotates, the second sleeve (601) moves up, and the lifting rod (602) ejects the forging from the mold cavity (201); The lifting pipe (6023) stops rising under the limitation of the stop ring (6022) and the movable groove (202), at this time the forging moves out of the mold cavity (201), and the elastic telescopic pipe (6021) is compressed and buffered; S3: blanking of the forging and positioning of the blank: The pinch (4) continues to move forward, the blank pushing rod (11) pushes the ejected forging transversely to the blank guide table (204) to slide off; The first one-way gear (9) engages with the rack plate (8) at the die holder (2), so that the arc-shaped clamping plate (405) and the opening at the bottom of the arc-shaped clamping seat (403) are opened, and the round bar blank (3) slides along the arc-shaped clamping seat (403) to the position right above the die cavity (201), and the blocking plate (203) limits the round bar blank (3); At this time, the first elastic telescopic rod (1001) is inserted into the upper positioning hole (4021), and the position of the arc-shaped clamping plate (405) is locked to prevent it from being pushed back to the round bar blank (3); S4: reset and replenishment stage: The displacement motor (5) reverses, the clamping and conveying part (4) moves back, the second one-way gear (901) engages with the rack plate (8) on the support (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); The second sleeve (601) moves down, the jacking rod (602) completely exits the die cavity (201), and the round bar blank (3) falls into the die cavity (201); When the U-shaped plate (402) returns, it abuts against the blocking rod (132), the L-shaped plate (13) is away from the opening at the bottom of the material shell (12), and new blank is automatically replenished into the clamping cavity; S5: The round bar blank (3) in the die cavity (201) is forged and formed by the press body (14) through the pressing seat, and steps S1-S4 are repeated to perform forging work on the remaining round bar blanks (3).

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