Hexagonal head bolt forging and pressing forming equipment and red upsetting system

Abstract

The invention relates to the field of bolt machining, and particularly discloses hexagonal head bolt forging and pressing forming equipment and a red upsetting system.The hexagonal head bolt forging and pressing forming equipment comprises an upper press, a first connector, a connecting base, a plurality of punches of different specifications and a plurality of female dies matched with the punches, the punches are coaxially and detachably connected with the first connector, and the female dies are coaxially and detachably connected with the connecting base; the lower end face of the punch can abut against the upper end face of the female die, a first forming groove is formed in the punch in an upward-inward-concave mode, a second forming groove is formed in the female die in a downward-inward-concave mode, the first forming groove and the second forming groove can be spliced to form a hexagonal head forming cavity, and the lower end face of the first flange is lower than the lower end face of the punch. The upper end face of the second flange is higher than or equal to the upper end face of the female die. According to the scheme, overflowing excess materials and burrs are located in the middle of the hexagonal head, most of the excess materials and the burrs are located on the vertical side face of the hexagonal head, a small part of the excess materials and the burrs are located on the six edges of the hexagonal head at most, and the cleaning difficulty of the excess materials and the burrs on the hexagonal head can be obviously reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of bolt processing, in particular to a hexagonal head bolt forging and forming equipment and a red upsetting system. Background Art

[0002] When processing hexagonal head bolts, the raw material of the bolts must first be sawn into segments to form blanks, which are then subjected to red upsetting. During the red upsetting process, the blanks must first be heated using a heating device to a certain temperature to impart good plasticity for subsequent forming operations. During the forming operation, a mold is designed and manufactured based on the specifications and shape of the bolts. The mold typically consists of a punch and a die. The punch is used to apply pressure to plastically deform the blank, while the die is used to define the shape and size of the bolt.

[0003] When large-sized hexagonal bolts are stamped using forging equipment, the lower surface of the punch close to the die is flat. After red upsetting, the fit between the punch and the upper surface of the die will decrease as the wear between the contact surfaces increases with long-term use of the punch and the die. As a result, burrs or overflow materials are easily gathered on the six edges, fillet transitions or top edges of the hexagonal head of the bolt. These burrs or excess materials may affect the uniformity of force on the end face of the hexagonal head, and may also cause stress concentration, thereby reducing the service life of the bolt.

[0004] At the same time, when the burrs or residual materials on the six edges, rounded transition or top edge of the top of the hexagonal head are removed by manual grinding, milling, grinding or polishing, the six edges, rounded transition or top edge structure at the top of the hexagonal head are easily damaged, which may easily lead to defects or insufficient removal of burrs or residual materials at the final six edges, rounded transition or top edge. Summary of the Invention

[0005] In response to the deficiencies in the prior art, the present invention provides a hexagonal head bolt forging and forming equipment and a red upsetting system to solve the problem that burrs or overflowing materials easily gather on the six edges, rounded transitions or top edges of the hexagonal head top of the bolt, which easily leads to defects or insufficient removal of burrs or excess materials on the six edges, rounded transitions or top edges of the hexagonal head top.

[0006] In order to achieve the above-mentioned object, the basic scheme of the present invention is as follows: a hexagonal head bolt forging forming equipment, comprising a base, a support base, a support column and an upper press, wherein the support base is fixedly mounted on the base, the support column is vertically fixedly mounted on the four sides of the base, the upper press is fixedly mounted on the top of the support column, and a pressing head is provided on the lower end surface of the upper press for vertical sliding along the support column, and further comprising:

[0007] A first connector, the first connector being fixedly mounted on the lower surface of the pressure head;

[0008] The connecting seat is mounted on the supporting seat and can be vertically opposite to the first connecting head. The lower end surface of the first connecting head is provided with a first flange, and the upper end surface of the connecting seat is provided with a second flange. The side wall of the first flange can be in sliding contact with the side wall of the second flange.

[0009] A plurality of punches of different specifications, wherein the punches are coaxially and detachably connected to the first connector;

[0010] Several dies matching the punch are provided, and the dies are coaxially and detachably connected to the connecting seat. The lower end face of the punch can be abutted against the upper end face of the die. The punch is concave upwardly and is provided with a first forming groove, and the die is concave downwardly and is provided with a second forming groove. The first forming groove can be combined with the second forming groove to form a hexagonal head forming cavity. The lower end face of the first flange is lower than the lower end face of the punch, and the upper end face of the second flange is higher than or equal to the upper end face of the die.

[0011] The technical principle of the present invention is: when forging the blank, first select a suitable punch and die according to the blank and the model of the hexagonal head bolt to be finally formed, install the punch on the first connecting head, and install the die on the connecting seat; transfer the blank to the die, the die supports and limits the blank, and the preheating end of the blank is opposite to the punch; the pressure head pushes the first connecting head and the punch to move down stably to the blank, and the preheating end of the blank is pre-embedded in the first forming groove of the punch, and the punch presses down the top of the blank, and the first flange of the first connecting head can cooperate and limit with the second flange of the connecting seat, so that the punch moves down stably and accurately; the first forming groove of the punch can be accurately assembled with the second forming groove of the die to form a hexagonal head forming cavity, so that the hexagonal head is accurately formed, and the preheating end of the blank and the inner walls of the first forming groove and the second forming groove are more evenly offset, which can reduce the stress concentration at the local part after the hexagonal head is formed.

[0012] If excess material overflows between the lower surface of the punch and the upper surface of the die after forging the preheated end of the blank, the overflowed excess material and burrs will be located in the middle of the hexagonal head, mostly on the vertical side of the hexagonal head. A small part of the excess material and burrs will only be on the six edges of the hexagonal head at most. This can significantly reduce the difficulty of cleaning the excess material and burrs on the hexagonal head, and can also reduce the damage of the hexagonal head bolt when the burrs are removed.

[0013] Furthermore, the outer wall of one end of the die connected to the connecting seat is in the shape of a polygonal column, and the outer wall of one end of the punch and the first connecting head is also in the shape of a polygonal column.

[0014] Through the above-mentioned arrangement, when the die is installed on the connecting seat and the punch is installed on the first connecting head, the punch and the die are restricted by the polygonal column structure at the end, so that the punch and the die can be precisely matched and installed on the first connecting head and the connecting seat, and the punch and the die can also be precisely opposite to each other after installation.

[0015] Furthermore, an annular third flange is provided at the edge of the upper end surface of the die, and the upper side of the third flange can be abutted and sealed against the lower end surface of the punch;

[0016] A fourth flange is provided at the edge of the lower end face of the punch near the center, which can be assembled with the third flange for sealing. The fourth flange is also annular, and the lower side of the fourth flange can be sealed against the upper end face of the die.

[0017] Through the above arrangement, since the third flange is provided at the upper end surface of the die and the fourth flange is provided on the punch, the third flange can be sealed and matched with the fourth flange, which can reduce the amount and probability of excess material overflow between the lower surface of the punch and the upper surface of the die; if excess material still overflows between the lower surface of the punch and the upper surface of the die after forging the preheated end of the blank, the third flange and the fourth flange can cooperate at this time, so that the longitudinal cross-sectional profile of the excess material finally adhered to the middle part of the hexagonal head is also bent, making the structure of the adhesion between the excess material and the middle part of the hexagonal head more fragile, making it easier to carry out subsequent cleaning of the excess material, and reducing the risk of the middle part of the hexagonal head being damaged during cleaning.

[0018] Furthermore, two sliding punching units are included, and the sliding punching units include:

[0019] The slide rail is arranged horizontally, and a slide groove is vertically penetrated on the upper surface of the support seat. The slide rail is fixedly installed along the horizontal direction of the slide groove, and one end of the slide groove is vertically opposite to the first connector;

[0020] A slider sliding along the slide rail, the slider being fixedly connected to the outer wall of the connecting seat;

[0021] A second connector, the second connector being fixedly mounted on the lower surface of the pressing head, the end of the slide groove away from the first connector being vertically opposite to the second connector, and a fifth flange being provided on the edge of the lower surface of the second connector and capable of slidingly contacting the side wall of the second flange;

[0022] A plurality of punching dies with matching cross-sectional profiles, wherein the lower end of the punching dies is cylindrical, and the upper end of the punching dies is coaxially and detachably connected to the first connector; the cross-sectional profile of the lower end of the punching dies is the same as the cross-sectional profile of the hexagonal head;

[0023] The lifting rod is vertically fixed in the support seat, the upper end of the lifting rod can pass through the slide groove and lift against the lower end of the hexagonal head bolt, and the lifting rod is coaxially arranged with the second connecting head.

[0024] Through the above arrangement, after the blank in the connecting seat and the die is stamped, the slider is controlled to drive the connecting seat and the die to the other end of the slide, and the hexagonal bolt is vertically opposite to the second connecting head and the punching die head; at this time, the lifting rod starts to extend, and the upper end of the lifting rod coaxially extends into the die and contacts with the lower end of the hexagonal bolt, and the lifting rod lifts the hexagonal bolt so that the residual material and burrs in the middle of the hexagonal head are separated from the upper surface of the die; then the pressure head drives the second connecting head and the punching die head to move downward, and the fifth flange on the second connecting head cooperates with the second flange to achieve precise downward movement of the punching die head. The downward guidance allows the punching die to fit precisely onto the outer wall of the hexagonal head, and the blade on the lower side of the punching die can impact the adhered residual material to achieve punching and removal of the residual material; in the above process, a single downward pressure of the pressure head can simultaneously drive the second connector and the punching die as well as the first connector and the punch to move downward synchronously, one set of the connecting seat and the die can be opposite to the first connector and the punch, and can perform forging processing on the blank, and the other set of the connecting seat and the die can be used with the second connector and the punching die to clean up the residual material of the hexagonal head bolt, thereby improving processing efficiency, reducing processing costs and reducing processing procedures.

[0025] Furthermore, the lifting height of the hexagonal bolt by the lifting rod is less than or equal to the depth of the second forming groove.

[0026] With the above arrangement, when the hexagonal head bolt is punched after being lifted, it is ensured that a part of the hexagonal head is still circumferentially limited by the second forming groove of the die, thereby preventing the hexagonal head from shifting circumferentially.

[0027] Furthermore, the included angle between the horizontal axes of the chutes in the two sliding punching units is less than 180° and greater than or equal to 60°;

[0028] The slide rail is located on a side of the slide groove away from the adjacent slide groove, and the inner walls at both ends of the slide groove are arc surfaces that fit and abut against the outer wall of the support seat.

[0029] Through the above setting, the arc surface of the slide groove can better fit and offset with the circumferential surface of the connecting seat; at the same time, when a single group of connecting seats moves to the first connecting head, the connecting seat can also offset with the inner walls of the ends of the two groups of slide grooves, making the limiting of the connecting seat more stable and accurate.

[0030] Furthermore, a slag removal cavity is formed between the inner wall of the fifth flange of the second connector and the outer wall of the punching die head. A plurality of slag suction pipes connected to the slag removal cavity are provided on the upper side of the second connector. The connection between the slag suction pipes and the second connector is in the shape of an inverted trapezoidal opening. The slag suction pipes are connected to a negative pressure suction machine.

[0031] The lower end of the punching die head is blade-shaped, the outer wall of the blade-shaped punching die head is inclined, and the upper side of the blade-shaped punching die head is opposite to the lower end of the slag suction pipe.

[0032] Through the above arrangement, during the punching and clearing process, the residual material is guided into the slag removal chamber by the inclined surface of the blade on the lower side of the punching die head and splashes toward the slag suction pipe. The negative pressure of the negative pressure suction machine transmits the negative pressure to the slag suction pipe, so that the residual material can be quickly discharged through the slag removal chamber and the slag suction pipe, avoiding the residual material remaining in the die and affecting the processing of the next blank.

[0033] The present invention also intends to provide a red upsetting system, including several robotic arms, several induction heating devices, an automatic sandblasting machine and a hexagonal head bolt forging forming device.

[0034] A plurality of mechanical arms are distributed among the plurality of induction heating devices, the automatic sandblasting machine and the hexagonal head bolt forging and forming devices, and a plurality of first clamping claws are provided on the mechanical arms.

[0035] The technical principle of the present invention is: several robotic arms and first clamps can cooperate with several induction heating equipment, automatic sandblasting machines and hexagonal head bolt forging and forming equipment, and can more flexibly convey, transfer and install and clamp the blanks, making the transfer of the blanks more convenient and improving the efficiency of the red upsetting process.

[0036] Furthermore, the induction heating device comprises:

[0037] Electric controlled heating box;

[0038] A plurality of induction coils, wherein the plurality of induction coils are fixedly mounted on the side wall of the upper end of the electrically controlled heating box, the plurality of induction coils are arranged horizontally in sequence, the plurality of induction coils are vertically arranged, and the diameters of the cross-sectional profiles of the plurality of induction coils are different;

[0039] The lifting rail is fixedly installed on the vertical side wall of the electric-controlled heating box close to the induction coil, and the lifting rail is located under the plurality of induction coils;

[0040] A lifting slider that can slide along the lifting rail;

[0041] A clamping assembly that holds the blank for rotation and horizontal sliding.

[0042] Through the above arrangement, when the blank is inductively heated, induction coils of different specifications are provided in the induction heating equipment, and the induction coils can cooperate with the lifting rail, lifting slider, translation rail and translation slider to inductively heat the blanks of different diameters and lengths.

[0043] Furthermore, the clamping assembly comprises:

[0044] A mounting block is fixedly connected to the lifting slider, and a mounting slot is vertically provided through the mounting block, wherein the mounting slot is vertically opposite to the plurality of induction coils;

[0045] The translation rail is set horizontally and is fixedly installed horizontally on the inner wall of the installation slot of the installation block;

[0046] A translation slider that can slide along the translation rail;

[0047] A rotating motor is fixedly connected to the translation slider;

[0048] A second clamping jaw can clamp one end of the blank, the second clamping jaw is fixedly installed on the power output end of the rotating motor, the second clamping jaw is vertically upward and can be vertically opposite to the centers of the plurality of induction coils.

[0049] Through the above setting, the blank is transferred by the robotic arm and the first clamping jaw and installed on the clamping assembly. The clamping assembly can drive the blank to move horizontally so that the blank is vertically opposite to the induction coil of corresponding specifications. Then the clamping assembly controls the blank to move upward to the vertical position of the induction coil for heating. While heating, it can drive the blank to rotate to achieve uniform heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a schematic structural diagram of the axial direction of a hexagonal head bolt forging and forming equipment in Example 1 of the present invention.

[0051] Figure 2 This is a longitudinal cross-sectional view of a hexagonal head bolt forging and forming device in Example 1 of the present invention.

[0052] Figure 3 for Figure 2 An enlarged view of the first connector, punch, connector seat and die when assembled.

[0053] Figure 4 This is a top view of a support seat, a connecting seat and a die in a hexagonal head bolt forging and forming equipment according to Example 2 of the present invention.

[0054] Figure 5 This is a longitudinal cross-sectional view of a hexagonal head bolt forging and forming device in Example 2 of the present invention.

[0055] Figure 6 for Figure 5 Enlarged view of the second connector and punching die.

[0056] Figure 7 for Figure 5 An enlarged view of the first connector, punch, connector seat and die when assembled.

[0057] Figure 8 This is a structural schematic diagram of a red upsetting system according to Example 3 of the present invention.

[0058] Figure 9 for Figure 8 Schematic diagram of the structure of the induction heating equipment in the axial direction.

[0059] In the above drawings: base 10, support base 101, slide 102, support column 103, upper press 104, screen 105, first connector 201, first flange 202, connector 203, second flange 204, punch 301, first forming groove 302, fourth flange 303, die 304, second forming groove 305, third flange 306, slide rail 401, slider 402, second connector 501, fifth flange 5 02, punching die 503, slag removal chamber 504, slag suction pipe 505, lifting rod 601, lifting cylinder 602, robotic arm 701, first clamping jaw 711, automatic sandblasting machine 702, hexagonal head bolt forging forming equipment 703, induction heating equipment 704, electric control heating box 705, induction coil 715, lifting rail 725, lifting slider 735, surrounding shell 745, mounting block 755, rotating motor 765, second clamping jaw 775. DETAILED DESCRIPTION

[0060] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0061] Example 1

[0062] This embodiment is basically as Figure 1 、 Figure 2 and Figure 3 As shown, the embodiment of the present invention proposes a hexagonal head bolt forging forming equipment, including a base 10, a support base 101, a support column 103, an upper press 104, a first connecting head 201, a connecting seat 203, a number of punches 301 of different specifications and a number of dies 304 matching the punches 301, the support base 101 is fixedly installed on the base 10, the support column 103 is vertically fixedly installed on the four sides of the base 10, the upper press 104 is fixedly installed on the top of the support column 103, and a pressing head that slides vertically along the support column 103 is provided on the lower end surface of the upper press 104, a liftable blocking net 105 is provided between the two front support columns 103, and a blocking net 105 is also provided between the two rear support columns 103, and both sets of blocking nets 105 can be lifted and lowered, and the blocking net 105 can block the positions of the assembled first connecting head 201, punch 301, connecting seat 203 and die 304.

[0063] like Figure 2 As shown, the first connecting head 201 is integrally formed on the lower surface of the pressure head; the connecting seat 203 is welded to the support seat 101, and the connecting seat 203 can be vertically opposite to the first connecting head 201; the connecting seat 203 and the first connecting head 201 are both cylindrical.

[0064] like Figure 2 and Figure 3As shown, a first flange 202 is integrally formed on the lower end surface of the first connecting head 201, and a second flange 204 is integrally formed on the upper end surface of the connecting seat 203. The outer wall of the first flange 202 can be in sliding contact with the inner wall of the second flange 204; the upper end of the punch 301 is a polygonal column, and the upper end of the punch 301 can be coaxially embedded in the first connecting head 201 and can be detachably connected to the first connecting head 201 using a pin.

[0065] like Figure 2 and Figure 3 As shown, the female mold 304 is coaxially plugged into the connecting seat 203 , and the lower end of the female mold 304 is also polygonal, and the lower end of the female mold 304 can be embedded and installed in the connecting seat 203 .

[0066] At the same time, if Figure 2 and Figure 3 As shown, the lower end face of the punch 301 can be abutted against the upper end face of the die 304, the punch 301 is provided with a first molding groove 302 which is concave upward, and the die 304 is provided with a second molding groove 305 which is concave downward. The first molding groove 302 can be combined with the second molding groove 305 to form a hexagonal head molding cavity. The lower end face of the first flange 202 is lower than the lower end face of the punch 301, and the upper end face of the second flange 204 is on the same plane as the upper end face of the die 304.

[0067] When a hexagonal head bolt forging forming device in this embodiment performs forging processing on a blank, it first selects a suitable punch 301 and a die 304 according to the blank and the model of the hexagonal head bolt to be finally formed, and installs the punch 301 on the first connecting head 201, and the die 304 on the connecting seat 203. The punch 301 and the die 304 are restricted by the multi-prism structure at the end, so that the punch 301 and the die 304 can be accurately matched and installed on the first connecting head 201 and the connecting seat 203, and the punch 301 and the die 304 can also be accurately relative to each other after installation.

[0068] When the blank is forged, the end of the blank has been preheated, and then the blank is transferred and placed in the die 304, which supports and limits the blank, and the preheated end of the blank is opposite to the punch 301; at this time, the upper press 104 is started, and the upper press 104 controls the pressure head to move down along the support column 103, and the pressure head pushes the first connecting head 201 and the punch 301 to move steadily down to the blank, and the preheated end of the blank is pre-embedded in the first forming groove 302 of the punch 301, and the punch 301 presses down the top of the blank; when the preheated end of the blank is further forged, the first convex groove on the first connecting head 201 is pressed down. The edge 202 can be fitted into the second flange 204 of the connecting seat 203. At this time, the punch 301 continues to move downward, so that during the downward movement of the punch 301, the first flange 202 of the first connecting head 201 can cooperate with the second flange 204 of the connecting seat 203 to limit the position, so that the punch 301 can move downward stably and accurately, and the first forming groove 302 of the punch 301 can be accurately assembled with the second forming groove 305 of the die 304 to form a hexagonal head forming cavity, so that the hexagonal head can be accurately formed; after forming, the upper press 104 drives the first connecting head 201 and the punch 301 to move upward through the pressure head, and the formed hexagonal head bolt is separated from the punch 301.

[0069] In the above process, the first molding groove 302 and the second molding groove 305 can wrap the preheating end of the blank more evenly, so that when the preheating end of the blank is deformed, the preheating end of the blank and the inner walls of the first molding groove 302 and the second molding groove 305 are more evenly offset, which can reduce the concentration of stress in the local area after the hexagonal head is formed.

[0070] At the same time, the first forming groove 302 of the punch 301 can accurately form the six edges, rounded transition and top edge at the end of the hexagonal head; if there is excess material overflowing between the lower surface of the punch 301 and the upper surface of the die 304 after forging the preheated end of the blank, the overflowed excess material and burrs will be located in the middle of the hexagonal head, mostly on the vertical side of the hexagonal head, and a small part of the excess material and burrs will only be on the six edges of the hexagonal head at most, which can significantly reduce the difficulty of cleaning the excess material and burrs on the hexagonal head, and can also reduce the damage of the hexagonal head bolt when the burrs are removed.

[0071] Example 2

[0072] The difference between Example 2 and Example 1 is as follows: Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, it also includes two sliding punching units, and the connecting seat 203 is horizontally slidably installed on the support seat 101; Figure 7As shown, an annular third flange 306 is provided at the edge of the upper end face of the die 304, and the upper side of the third flange 306 can be sealed against the lower end face of the punch 301; a fourth flange 303 is provided at the edge near the center of the lower end face of the punch 301, which can be assembled with the third flange 306 for sealing, and the fourth flange 303 is also annular, and the lower side of the fourth flange 303 can be sealed against the upper end face of the die 304.

[0073] like Figure 4 and Figure 5 As shown, the sliding punching unit includes a slide rail 401, a slider 402 sliding along the slide rail 401, a second connector 501, a plurality of punching die heads 503 with matching cross-sectional profiles, a lifting rod 601, and a lifting cylinder 602 controlling the lifting of the lifting rod 601; Figure 4 As shown, the slide rail 401 is arranged horizontally, and a slide groove 102 is vertically penetrated on the upper surface of the support seat 101. The outer wall of the lower end of the connecting seat 203 is in sliding contact with the inner wall of the slide groove 102. The longitudinal cross-sectional profile of the connecting seat 203 is stepped, and the step of the connecting seat 203 is against the upper surface of the support seat 101; the slide rail 401 is fixedly installed along the horizontal direction of the slide groove 102, and the end of the slide groove 102 close to the center of the connecting seat 203 is vertically opposite to the first connector 201. The horizontal axis angle of the slide groove 102 in the two sliding punching units is 90°; at the same time, as shown in FIG. Figure 5 As shown, the slider 402 is welded to the outer wall of the connecting seat 203; the slide rail 401 is located on the side of the slide groove 102 away from the adjacent slide groove 102, and the inner walls at both ends of the slide groove 102 are arc surfaces that fit against the outer wall of the support seat 101.

[0074] At the same time, if Figure 5 and Figure 6 As shown, the second connecting head 501 is integrally formed on the lower surface of the pressure head. The structure of the second connecting head 501 is consistent with that of the first connecting head 201. The end of the slide groove 102 away from the center of the connecting seat 203 is vertically opposite to the second connecting head 501. The edge of the lower surface of the second connecting head 501 is provided with a fifth flange 502 that can slide in contact with the inner wall of the second flange 204.

[0075] like Figure 5 and 6 As shown, the punching die 503 is made of high-speed steel or cemented carbide, the lower end of the punching die 503 is cylindrical, and the upper end of the punching die 503 is coaxially detachably connected to the first connecting head 201 through a polygonal column and a pin; the cross-sectional profile of the lower end of the punching die 503 is the same as the cross-sectional profile of the hexagonal head.

[0076] like Figure 5As shown, the lifting rod 601 is vertically fixedly installed in the support seat 101, and the upper end of the lifting rod 601 can pass through the slide groove 102 and lift against the lower end of the hexagonal head bolt. The lifting rod 601 is coaxially arranged with the second connecting head 501; when the lifting rod 601 is lifted in the first stage, the lifting height of the hexagonal head bolt is less than or equal to the depth of the second forming groove 305.

[0077] like Figure 5 and 6 As shown, a slag removal chamber 504 is formed between the inner wall of the fifth flange 502 of the second connecting head 501 and the outer wall of the punching die 503. A plurality of slag suction tubes 505 connected to the slag removal chamber 504 are provided on the upper side of the second connecting head 501. The connection between the slag suction tubes 505 and the second connecting head 501 is in the shape of an inverted trapezoidal opening, and the slag suction tubes 505 are connected to a negative pressure suction machine; the lower end of the punching die 503 is in the shape of a blade, and the blade-shaped outer wall of the punching die 503 is inclined, and the blade-shaped upper side of the punching die 503 is opposite to the lower end of the slag suction tube 505.

[0078] In this embodiment, a hexagonal head bolt forging forming device installs two sets of connecting seats 203 and dies 304 on the slide 102 when forging the blank. The two sets of connecting seats 203 and dies 304 can cooperate with the first connecting head 201 and the punch 301 in turn. The slider 402 can be controlled to control a certain set of connecting seats 203 and dies 304 to slide horizontally along the slide rail 401 to one end of the slide 102 close to the center of the support seat 101, so that the set of connecting seats 203 and dies 304 are directly matched with the first connecting head 201 and the punch 301, and the blank in the set of connecting seats 203 and dies 304 can be forged.

[0079] During the forging process, since the third flange 306 is provided at the upper end surface of the die 304 and the fourth flange 303 is provided on the punch 301, the third flange 306 can be sealed with the fourth flange 303, which can reduce the amount and probability of excess material overflow between the lower surface of the punch 301 and the upper surface of the die 304; at the same time, if excess material still overflows between the lower surface of the punch 301 and the upper surface of the die 304 after forging the preheated end of the blank, the third flange 306 and the fourth flange 303 can cooperate at this time, so that the longitudinal cross-sectional profile of the excess material finally adhered to the middle part of the hexagonal head is also bent, making the structure of the adhesion between the excess material and the middle part of the hexagonal head more fragile, making it easier to clean the subsequent excess material, and reducing the risk of the middle part of the hexagonal head being damaged during cleaning.

[0080] When the blanks in the connecting seat 203 and the die 304 are stamped, the formed hexagonal bolt is separated from the punch 301, and the slider 402 is controlled again to drive the connecting seat 203 and the die 304 to move to the other end of the slide 102. At this time, the hexagonal bolt is vertically opposite to the second connecting head 501 and the punching die 503; at this time, the lifting cylinder 602 is started, and the upper end of the lifting rod 601 coaxially extends into the die 304 and contacts and abuts against the lower end of the hexagonal bolt. The lifting rod 601 performs the first stage of lifting on the hexagonal bolt, so that the residual material and burrs in the middle of the hexagonal head are separated from the upper surface of the die 304; at the same time, the pressure head drives the second connecting head 501 and the punching die 50 3 moves downward, the fifth flange 502 on the second connecting head 501 cooperates with the second flange 204 to guide the punching and cutting die head 503 to move downward accurately, so that the punching and cutting die head 503 is accurately fitted to the outer wall of the hexagonal head, and the blade on the lower side of the punching and cutting die head 503 can impact the adhered residual material to achieve punching and removal of the residual material; in the process of punching and removal, the residual material is guided by the inclined surface of the blade on the lower side of the punching and cutting die head 503 into the slag removal chamber 504 and splashed toward the slag suction pipe 505, and the negative pressure of the negative pressure suction machine transmits the negative pressure to the slag suction pipe 505, so that the residual material can be quickly discharged through the slag removal chamber 504 and the slag suction pipe 505, avoiding the residual material remaining in the die 304 and affecting the processing of the next blank.

[0081] After the punching is completed, the pressure head drives the second connecting head 501 and the punching die head 503 to move upward, and the punching die head 503 is separated from the hexagonal head bolt. At this time, the lifting cylinder 602 lifts the lifting rod 601 for a second time, so that the hexagonal head of the hexagonal head bolt is separated from the second forming groove 305 of the die 304. At this time, it is convenient to take out the entire hexagonal head bolt through the lower side of the hexagonal head.

[0082] In the above process, the downward pressure of a single pressing head can simultaneously drive the second connecting head 501 and the punching die 503 as well as the first connecting head 201 and the punch 301 to move downward synchronously, and one set of connecting seats 203 and the die 304 can be opposite to the first connecting head 201 and the punch 301, and can perform forging processing on the blank; at the same time, the other set of connecting seats 203 and the die 304 can be used with the second connecting head 501 and the punching die 503 to clean up the residual material of the hexagonal head bolt, and a single process of two workpieces can be completed in a single pressing process; at the same time, it can cooperate with the placement of the blank and the removal of the hexagonal head bolt, and the blank can be forged on the slide rail 4. 01 and the slider 402, it moves smoothly to the first connector 201 and the punch 301 or the second connector 501 and the punching die 503, which is convenient for the beat cycle of forging and residual material cleaning processing, and improves the processing efficiency of a single blank; at the same time, when the blank is forged and then moved to the second connector 501 and the punching die 503, the temperature at the hexagonal head will quickly drop to 300-600℃. At this time, the residual material becomes brittle relative to the hexagonal head, and is easier to cooperate with the punching die 503 for fast and efficient punching, which is convenient for more complete removal of residual material and reduces the probability of damage at the six edges of the hexagonal head.

[0083] Example 3

[0084] The difference between Example 3 and Example 2 is basically as shown in the attached Figure 8 and Figure 9 As shown, it is intended to provide a red upsetting system, including several robotic arms 701, several induction heating devices 704, automatic sandblasting machines 702 and a hexagonal head bolt forging forming device 703, the several robotic arms 701 are distributed between the several induction heating devices 704, the automatic sandblasting machines 702 and the hexagonal head bolt forging forming device 703, and four first clamps 711 are provided on the robotic arms 701.

[0085] like Figure 9 As shown, the induction heating equipment 704 includes an electrically controlled heating box 705, three sets of induction coils 715, a lifting rail 725, a lifting slider 735 that can slide along the lifting rail 725, and a clamping assembly for clamping the blank for rotation and horizontal sliding. The three sets of induction coils 715 are fixedly installed on the front side wall of the upper end of the electrically controlled heating box 705 by bolts. The three sets of induction coils 715 are arranged horizontally from left to right. The three sets of induction coils 715 are all vertically arranged, and the diameters of the cross-sectional profiles of the three sets of induction coils 715 are all different. The lifting rail 725 is fixedly installed on the vertical side wall of the electrically controlled heating box 705 on the side close to the induction coils 715. The lifting rail 725 is located below the three sets of induction coils 715.

[0086] At the same time, the clamping assembly includes an enclosing shell 745, a mounting block 755, a translation rail, a translation slider 402 that can slide along the translation rail, a rotating motor 765, and a second clamping claw 775 that can clamp one end of the blank. The enclosing shell 745 is fixedly installed at the front side of the electric control heating box 705 by bolts. The enclosing shell 745 is cylindrical and can wrap the mounting block 755, the second clamping claw 775 and the lifting cylinder; the mounting block 755 is welded to the lifting slider 735, and the mounting block 755 vertically penetrates the device A mounting groove is provided, and the mounting groove is vertically opposite to the several induction coils 715; the translation rail is arranged horizontally, and the translation rail is fixedly installed on the inner wall of the mounting groove of the mounting block 755 by bolts; the rotating motor 765 is fixedly connected to the translation slider 402 by bolts, and the moving end of the lifting cylinder is vertically upward; the second clamping jaw 775 is fixedly installed on the power output end of the rotating motor 765 by bolts, and the second clamping jaw 775 is vertically upward and can be vertically opposite to the center of the several induction coils 715.

[0087] When a red upsetting system in this embodiment is in use, the robotic arm 701 controls the first clamping jaw 711 to clamp the blank, and then transfers the first clamping jaw 711 to be vertically installed on the second clamping jaw 775, and the second clamping jaw 775 clamps the blank. At this time, the translation slider 402 can be controlled to drive the rotating motor 765, the second clamping jaw 775 and the blank to move horizontally along the translation rail, so that the blank is vertically opposite to the induction coil 715 of the corresponding specification; then the lifting slider 735 is controlled to drive the mounting block 755 to move upward, so that the rotating motor 765, the second clamping jaw 775 and the blank move upward synchronously, and the upper end of the blank moves into the induction coil 715. At this time, the height of the lifting slider 735 sliding up along the lifting rail 725 can be controlled according to the length of the blank to be heated, so that the upper end of the blank is accurately opposite to the induction coil 715; then the rotating motor 765 is started, and the rotating motor 765 drives the second clamping jaw 775 and the blank to rotate relative to the induction coil 715, so that the end of the blank is heated evenly.

[0088] After the induction heating of the blank is completed, the lifting slider 735 moves back and the rotating motor 765 pauses; then the robotic arm 701 controls the first clamp 711 to clamp another blank and move it to the induction heating equipment 704. The robotic arm 701 controls the first clamp 711 to first remove the heated blank, and then install the blank to be heated on the second clamp 775, and then the next blank can be processed.

[0089] The robotic arm 701 controls the first clamp 711 to transfer the heated blank to the automatic sandblasting machine 702. The automatic sandblasting machine 702 transfers the blank and sandblasts the heated end of the blank to remove the oxide scale on the blank in preparation for subsequent forging processing.

[0090] The robot arm 701 controls the first clamping jaw 711 again to clamp the blank after the oxide scale is removed, and transfers it to be installed on the die 304, and then the forging process and the residual material cleaning process can be carried out.

[0091] In the above process, induction coils 715 of different specifications are provided in the induction heating equipment 704, and the induction coils 715 can cooperate with the lifting rail 725, the lifting slider 735, the translation rail and the translation slider 402 to perform induction heating on blanks of different diameters and lengths; at the same time, the rotating motor 765 also cooperates with the second clamping jaw 775 to drive the blank to rotate, so that the induction heating position of the blank is accurate and the heating is uniform, thereby improving the red upsetting processing efficiency of the hexagonal head bolts.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A hexagonal head bolt forging forming equipment, comprising a base, a support base, a support column and an upper press, wherein the support base is fixedly mounted on the base, the support column is vertically fixedly mounted on the four sides of the base, the upper press is fixedly mounted on the top of the support column, and a pressing head is provided on the lower end surface of the upper press for vertical sliding along the support column, characterized in that: Also includes: a first connector, the first connector being fixedly mounted on the lower surface of the pressure head; A connecting seat is mounted on the supporting seat and can be vertically opposite to the first connecting head. A first flange is provided on the lower end surface of the first connecting head, and a second flange is provided on the upper end surface of the connecting seat. The side wall of the first flange can be in sliding contact with the side wall of the second flange. A plurality of punches of different specifications, wherein the punches are coaxially and detachably connected to the first connector; Several dies matching the punch are provided, and the dies are coaxially and detachably connected to the connecting seat. The lower end face of the punch can be abutted against the upper end face of the die. The punch is concave upwardly and provided with a first molding groove, and the die is concave downwardly and provided with a second molding groove. The first molding groove can be combined with the second molding groove to form a hexagonal head molding cavity. The lower end face of the first flange is lower than the lower end face of the punch, and the upper end face of the second flange is higher than or equal to the upper end face of the die.

2. The hexagonal head bolt forging equipment according to claim 1, characterized in that: The outer wall of one end of the die connected to the connecting seat is in the shape of a polygonal column, and the outer wall of one end of the punch connected to the first connecting head is also in the shape of a polygonal column.

3. The hexagonal head bolt forging equipment according to claim 1, characterized in that: An annular third flange is provided at the edge of the upper end surface of the die, and the upper side of the third flange can be abutted and sealed against the lower end surface of the punch; A fourth flange is provided at the edge of the lower end face of the punch near the center, which can be assembled with the third flange for sealing. The fourth flange is also annular, and the lower side of the fourth flange can be sealed against the upper end face of the die.

4. A hexagonal head bolt forging device according to any one of claims 1 to 3, characterized in that: It also includes two sliding punching units, the sliding punching units including: The slide rail is horizontally arranged, and a slide groove is vertically penetrated on the upper surface of the support seat. The slide rail is fixedly installed along the horizontal direction of the slide groove, and one end of the slide groove is vertically opposite to the first connector; A slider sliding along the slide rail, wherein the slider is fixedly connected to the outer wall of the connecting seat; a second connector fixedly mounted on the lower surface of the pressing head, wherein an end of the slide groove away from the first connector is vertically opposite to the second connector, and a fifth flange is provided on an edge of the lower surface of the second connector and is capable of slidingly contacting a side wall of the second flange; A plurality of punching dies with matching cross-sectional profiles, wherein the lower end of the punching dies is cylindrical, and the upper end of the punching dies is coaxially and detachably connected to the first connector; the cross-sectional profile of the lower end of the punching dies is the same as the cross-sectional profile of the hexagonal head; The lifting rod is vertically fixed in the support seat, the upper end of the lifting rod can pass through the slide groove and lift against the lower end of the hexagonal head bolt, and the lifting rod is coaxially arranged with the second connecting head.

5. The hexagonal head bolt forging equipment according to claim 4, characterized in that: The lifting height of the hexagonal head bolt by the lifting rod is less than or equal to the depth of the second forming groove.

6. The hexagonal head bolt forging equipment according to claim 5, characterized in that: The included angle between the horizontal axes of the chutes in the two sliding punching units is less than 180° and greater than or equal to 60°; The slide rail is located on a side of the slide groove away from the adjacent slide groove, and the inner walls at both ends of the slide groove are arc surfaces that fit and abut against the outer wall of the support seat.

7. The hexagonal head bolt forging equipment according to claim 7, characterized in that: A slag removal chamber is formed between the inner wall of the fifth flange of the second connector and the outer wall of the punching die head. A plurality of slag suction pipes connected to the slag removal chamber are provided on the upper side of the second connector. The connection between the slag suction pipes and the second connector is in the shape of an inverted trapezoidal opening. The slag suction pipes are connected to a negative pressure suction machine. The lower end of the punching die head is blade-shaped, the outer wall of the blade-shaped punching die head is inclined, and the upper side of the blade-shaped punching die head is opposite to the lower end of the slag suction pipe.

8. A red upsetting system, characterized in that, The invention comprises several robotic arms, several induction heating devices, an automatic sandblasting machine and a hexagonal head bolt forging forming device according to any one of claims 5 to 7. The plurality of mechanical arms are distributed among the plurality of induction heating devices, the automatic sandblasting machine and the hexagonal head bolt forging and forming devices, and the mechanical arms are provided with a plurality of first clamping claws.

9. A red upsetting system according to claim 8, characterized in that: The induction heating device comprises: Electric controlled heating box; A plurality of induction coils, wherein the plurality of induction coils are fixedly mounted on the side wall of the upper end of the electrically controlled heating box, the plurality of induction coils are arranged horizontally in sequence, the plurality of induction coils are vertically arranged, and the diameters of the cross-sectional profiles of the plurality of induction coils are different; A lifting rail, which is fixedly mounted on a vertical side wall of the electric-controlled heating box close to the induction coil, and is located below the plurality of induction coils; A lifting slider that can slide along the lifting rail; A clamping assembly that holds the blank for rotation and horizontal sliding.

10. A red upsetting system according to claim 9, characterized in that: The clamping assembly comprises: A mounting block, the mounting block being fixedly connected to the lifting slider, the mounting block being vertically penetrated by a mounting slot, the mounting slot being vertically opposite to the plurality of induction coils; The translation rail is arranged horizontally and is fixedly mounted horizontally on the inner wall of the mounting slot of the mounting block; A translation slider that can slide along the translation rail; A rotating motor, wherein the rotating motor is fixedly connected to the translation slider; A second clamping jaw can clamp one end of the blank, the second clamping jaw is fixedly installed on the power output end of the rotating motor, the second clamping jaw is vertically upward and can be vertically opposite to the centers of the plurality of induction coils.

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