Material overturning structure of forging and pressing machine

Abstract

The invention provides a material overturning structure of a forging and pressing machine, and relates to the field of forging and pressing equipment. The top end face of the forging and pressing workbench is fixedly connected with four supporting guide columns in a rectangular array shape. The upper parts of the four supporting guide columns are fixedly connected with a mounting seat; a hydraulic cylinder is arranged in the mounting seat; the bottom end face of an output shaft of the hydraulic cylinder is fixedly connected with a forging base. The top end face of the forging and pressing workbench is fixedly connected with a blank containing plate. The forging and pressing seat is aligned with the blank placing plate; a hydraulic station is arranged on the right portion of the forging and pressing workbench. When the machine tool shaft accessories are turned over, compressed air in the air supply piston box is fed into the air guide pipeline through a series of transmission and is blown out through the blowing frame, oxide skin generated in the forging and pressing process is blown off, and the problem that workers usually need to use tools such as air guns and the like is solved. The problems that the surface of a blank is blown and cleaned in the forging and pressing process, a worker needs to continuously and repeatedly blow and sweep, and the labor intensity of the worker is large are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of forging equipment, in particular to a material turning structure of a forging machine. Background Art

[0002] During the processing of machine tool shaft accessories, in order to improve the fatigue strength of machine tool shaft accessories and eliminate internal defects, machine tool shaft accessories are usually forged. During the forging process, in order to ensure uniform deformation of the blank and avoid local defects, a flipping structure is usually used to flip the blank. The existing flipping structure is usually composed of a clamping rod, a double-headed screw, a drive motor and a flipping rotating seat.

[0003] For example, the utility model application number CN202421190366.5 discloses a material turning device for forging processing. Specifically, the utility model relates to the field of forging processing technology and discloses a material turning device for forging processing, comprising a base, the top side of which is fixedly mounted with a support plate. When the material to be processed needs to be turned over, the servo motor is started to drive the second bevel gear and the first bevel gear to rotate. At this time, the first bevel gear drives the threaded rod to rotate, thereby facilitating the power supply for adjusting the distance between the clamp and the material. Subsequently, the thread drives the connecting seat to move under the action of the thread, and drives the corresponding connecting plate, fixed plate and clamping assembly to move relative to each other, so that the clamping seat in the clamping assembly is in contact with the material and clamped. Subsequently, during the clamping process, the second electric push rod is started to drive the second slider to move inside the second chute, thereby facilitating the adjustment of the length of the fixed plate according to demand, and further facilitating the adjustment of the position of the clamping seat according to the position of the material.

[0004] However, in the process of turning the blank, in order to prevent the oxide scale generated during the forging process from remaining, the existing turning structure usually requires the staff to use tools such as air guns to blow and clean the surface of the blank during the forging process, so that the staff need to continuously repeat the blowing action, which makes the staff's labor intensity higher, especially in the scenario of continuous forging. The operation is cumbersome and inconvenient to use. Summary of the Invention

[0005] In view of this, the present invention provides a turning structure of a forging machine, which has a blowing rack that can automatically blow off the oxide scale. During the movement of the adjusting slide rod, the piston range extending lever is driven to swing through the first auxiliary connecting rod. As the piston range extending lever swings, the control slider is driven to move. During the movement of the control slider, the control rack is driven to move. As the control rack moves, the control gear is driven to rotate. As the control gear rotates, the transmission shaft is driven to rotate. During the rotation of the transmission shaft, the control cam is driven to rotate. As the control cam rotates, the control push plate is squeezed to move. During the movement of the control push plate, The piston slide rod is driven to slide in the air supply piston box. As the piston slide rod slides, the booster piston slide plate is driven to slide and squeeze the connecting spring. At the same time, the rebound of the connecting spring can facilitate the reset of the booster piston slide plate, so that the booster piston slide plate can slide back and forth in the air supply piston box. During the reciprocating sliding of the air supply piston box, as the air supply piston box is pulled out, the air inlet port opens to inhale air and the exhaust port closes. When the air supply piston box is pushed inward, the exhaust port opens to send compressed air into the air guide pipe. The air inlet port is closed, and the compressed air entering the air guide pipe will be blown out through the purge rack to blow off the oxide scale produced during the forging process of machine tool shaft accessories.

[0006] The present invention provides a purpose and function of a material turning structure of a forging machine, which specifically includes: a forging workbench; the top surface of the forging workbench is fixedly connected to four supporting guide pillars in a rectangular array; the upper parts of the four supporting guide pillars are fixedly connected to a mounting seat; a hydraulic cylinder is arranged in the mounting seat; the bottom end surface of the hydraulic cylinder output shaft is fixedly connected to the forging seat; the top surface of the forging workbench is fixedly connected to a blank placing plate; the positions of the forging seat and the blank placing plate are aligned; a hydraulic station is arranged on the right side of the forging workbench; the hydraulic cylinder is connected to the hydraulic station through a hydraulic pipeline; the rear of the forging workbench The end face is fixedly connected to a mounting plate; the front end face of the mounting plate is rotatably connected to a material turning rotating seat; the front part of the material turning rotating seat is fixedly connected to an auxiliary seat; two adjusting slide bars are symmetrically slidably connected inside the auxiliary seat; an adjusting slider is slidably connected inside each of the two adjusting slide bars; a clamping material turning rod is fixedly connected to the inner side of each of the two adjusting sliders; two purge racks are symmetrically fixedly connected to the outside of the auxiliary seat; multiple groups of air supply piston boxes are fixedly connected inside the auxiliary seat; the air outlets of the multiple groups of air supply piston boxes are connected to air guide pipes; the air outlets of the air guide pipes are respectively connected to the air inlets of the two purge racks.

[0007] Furthermore, a double-headed screw is rotatably connected inside the auxiliary seat; the threads at both ends of the double-headed screw have opposite rotation directions; a second control motor is fastened to the external bolts of the auxiliary seat; the second control motor is arranged on the left side of the auxiliary seat; the rotating shaft of the second control motor is coaxially fixedly connected to the double-headed screw; two adjusting slide rods are symmetrically threadedly connected to the outside of the double-headed screw.

[0008] Furthermore, a first control motor is fastened with bolts on the rear end surface of the mounting plate; and a rotating shaft of the first control motor is coaxially fixedly connected to the material turning rotating seat.

[0009] Furthermore, an adjusting screw is rotatably connected inside each of the two adjusting slide rods; the two adjusting sliders are respectively threadedly connected to the outside of the two adjusting screws; the front of the two adjusting slide rods is bolted and fastened with a third control motor; the rotating shafts of the two third control motors are respectively coaxially fixedly connected to the two adjusting screws.

[0010] Furthermore, a group of guide sliders are symmetrically fixedly connected to the outside of the two adjusting sliders; a group of guide slots are symmetrically opened in the two adjusting slide bars; and the two groups of guide sliders are respectively slidably connected in the two guide slots.

[0011] Furthermore, the rear part of the top end surface of the two adjusting slide rods is hingedly connected to a first auxiliary connecting rod; two piston range extending levers are symmetrically connected to the auxiliary seat for rotation; the ends of the two first auxiliary connecting rods are respectively hingedly connected to the front part of the two piston range extending levers.

[0012] Furthermore, the rear parts of the two piston range extender levers are hingedly connected to a second auxiliary connecting rod; the ends of the two second auxiliary connecting rods are hingedly connected to a control slider; the rear end faces of the two control sliders are fixedly connected to a positioning slider; a positioning slot is opened in the rear part of the auxiliary seat; and the two control sliders are slidably connected in the positioning slot.

[0013] Furthermore, the front parts of the two control sliders are fixedly connected to a control rack; two transmission shafts are symmetrically rotatably connected in the auxiliary seat; the upper parts of the two transmission shafts are coaxially fixedly connected to a control gear; the two control gears are respectively aligned with the positions of the two control racks; and the two control gears are respectively engaged with the two control racks.

[0014] Furthermore, the lower parts of the two transmission shafts are coaxially fixedly connected with a control cam; the rear part of the auxiliary seat is slidably connected with a control push plate; the two control cams are aligned with the position of the control push plate.

[0015] Furthermore, the front end surfaces of the control push plates are fixedly connected to multiple groups of piston slide rods; the multiple groups of piston slide rods are respectively slidably connected to multiple groups of air supply piston boxes; the front parts of the multiple groups of piston slide rods are fixedly connected to booster piston slide plates; the multiple groups of booster piston slide plates are respectively slidably connected to multiple groups of air supply piston boxes; the front parts of the multiple groups of booster piston slide plates are fixedly connected to connecting springs; the ends of the multiple groups of connecting springs are respectively fixedly connected to multiple groups of air supply piston boxes. Beneficial effects

[0016] The present invention, during the process of forging machine tool shaft accessories, when turning over the machine tool shaft accessories, the movement of the adjusting slide rod will drive the piston range extender lever to swing through the first auxiliary connecting rod, and the swing of the piston range extender lever will drive the control slider to move, so that it drives the control rack to move, and drives the control gear to rotate, so that the control cam squeezes the control push plate to move, and then the compressed air in the air supply piston box is sent into the air guide pipe through a series of transmissions, and the compressed air entering the air guide pipe will be blown out through the purge rack to blow off the oxide scale generated in the forging process of the machine tool shaft accessories, without manual purge, simple and convenient operation, reducing the labor intensity of the staff, improving the quality and precision of the forging surface, and effectively improving the convenience of the turning structure of the forging machinery.

[0017] The displacement is amplified by the long arm / short arm ratio of the lever arm, and the short stroke of the adjusting slide is converted into a long stroke of the control slide. Even if the position distance of the adjusting slide is short, the control slide can be moved over a long distance, thereby improving the driving effect of the air supply piston box, ensuring the purging effect of the oxide scale, and effectively improving the practicality of the turning structure of the forging machinery.

[0018] By starting the third control motor, the third control motor drives the adjusting screw to rotate, and the rotation of the adjusting screw drives the adjusting slider to move. As the adjusting slider moves, the clamping and turning rod is driven to move. The size of the blank can be adapted to the size within a certain range, and it is compatible with blanks of multiple specifications. It is convenient to clamp blanks of different lengths, and effectively improves the versatility of the turning structure of the forging machinery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0020] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] In the attached figure: Figure 1 It is an axonometric structural diagram of the present invention.

[0022] Figure 2 It is a schematic diagram of the axonometric structure of the present invention from a rear view.

[0023] Figure 3 It is a schematic cross-sectional structural diagram of the mounting plate of the present invention.

[0024] Figure 4 It is a schematic diagram of the axonometric structure of the clamping and turning rod of the present invention.

[0025] Figure 5 It is a schematic diagram of the axonometric structure of the guide slider of the present invention.

[0026] Figure 6 It is a schematic cross-sectional structural diagram of the auxiliary seat of the present invention.

[0027] Figure 7 It is a schematic diagram of the axonometric structure of the auxiliary seat of the present invention.

[0028] Figure 8 This invention Figure 7 A is an enlarged structural diagram of FIG.

[0029] Figure 9 It is a schematic diagram of the axonometric structure of the piston range extending lever of the present invention.

[0030] Figure 10 It is a schematic diagram of the axonometric structure of the air supply piston box of the present invention.

[0031] Figure 11 It is a schematic diagram of the axonometric structure of the control gear of the present invention.

[0032] Figure 12 This invention Figure 11 Schematic diagram of the enlarged structure at point B.

[0033] Reference Signs List 1. Forging workbench; 101. Support guide column; 102. Mounting seat; 103. Hydraulic cylinder; 104. Forging seat; 105. Hydraulic station; 106. Mounting plate; 107. First control motor; 108. Blank placement plate; 109. Turning and rotating seat; 110. Auxiliary seat; 111. Double-headed screw; 112. Second control motor; 113. Adjusting slide; 114. Adjusting screw; 115. Third control motor; 116. Adjusting slide; 117. Clamping and turning rod; 118. Guide slide Groove; 119, guide slider; 120, first auxiliary connecting rod; 121, piston range extension lever; 122, second auxiliary connecting rod; 123, control slider; 124, positioning slider; 125, positioning slide groove; 126, control rack; 127, transmission shaft; 128, control gear; 129, control cam; 130, control push plate; 131, air supply piston box; 132, piston slide; 133, booster piston slide; 134, connecting spring; 135, air guide pipe; 136, purge rack. DETAILED DESCRIPTION Example 1

[0034] The present invention provides a material turning structure for forging machinery, please refer to Figures 1 to 12 As shown, it includes: a forging workbench 1; The top surface of the forging workbench 1 is fixedly connected to four supporting guide pillars 101 in a rectangular array; the upper part of the four supporting guide pillars 101 is fixedly connected to a mounting seat 102; a hydraulic cylinder 103 is provided in the mounting seat 102; the bottom end surface of the output shaft of the hydraulic cylinder 103 is fixedly connected to a forging seat 104; the top surface of the forging workbench 1 is fixedly connected to a blank placement plate 108; the forging seat 104 is aligned with the blank placement plate 108; a hydraulic station 105 is provided on the right side of the forging workbench 1; the hydraulic cylinder 103 is connected to the hydraulic station 105 through a hydraulic pipeline; the rear end surface of the forging workbench 1 is fixedly connected to a mounting plate 106; the front end surface of the mounting plate 106 is rotated It is movably connected to a material turning rotating seat 109; the front of the material turning rotating seat 109 is fixedly connected to an auxiliary seat 110; two adjusting slide bars 113 are symmetrically slidably connected inside the auxiliary seat 110; an adjusting slider 116 is slidably connected inside each of the two adjusting slide bars 113; the inner sides of the two adjusting sliders 116 are fixedly connected to a clamping material turning rod 117; the outside of the auxiliary seat 110 is symmetrically fixedly connected to two purge racks 136; multiple groups of air supply piston boxes 131 are fixedly connected inside the auxiliary seat 110; the air outlets of the multiple groups of air supply piston boxes 131 are connected to an air guide pipe 135; the air outlets of the air guide pipe 135 are respectively connected to the air inlets of the two purge racks 136.

[0035] Among them, a double-headed screw 111 is rotatably connected inside the auxiliary seat 110; the threads at both ends of the double-headed screw 111 rotate in opposite directions; a second control motor 112 is fastened to the external bolts of the auxiliary seat 110; the second control motor 112 is set on the left side of the auxiliary seat 110; the rotating shaft of the second control motor 112 is coaxially fixedly connected to the double-headed screw 111; two adjustment slide rods 113 are symmetrically threadedly connected to the outside of the double-headed screw 111.

[0036] The rear end surface of the mounting plate 106 is bolted to a first control motor 107 ; the rotating shaft of the first control motor 107 is coaxially fixedly connected to the material turning rotating seat 109 .

[0037] Among them, an adjusting screw 114 is rotatably connected inside each of the two adjusting slide rods 113; two adjusting sliders 116 are respectively threadedly connected to the outside of the two adjusting screws 114; the front part of the two adjusting slide rods 113 is bolted and fastened with a third control motor 115; the rotating shafts of the two third control motors 115 are respectively coaxially fixedly connected to the two adjusting screws 114.

[0038] Among them, a group of guide sliders 119 are symmetrically fixedly connected to the outside of the two adjustment sliders 116; a group of guide slots 118 are symmetrically opened in the two adjustment slide rods 113; and the two groups of guide sliders 119 are slidably connected in the two guide slots 118 respectively.

[0039] Among them, the rear part of the top end surface of the two adjusting slide rods 113 is hingedly connected to a first auxiliary connecting rod 120; two piston range extending levers 121 are symmetrically connected to the auxiliary seat 110; the ends of the two first auxiliary connecting rods 120 are respectively hingedly connected to the front of the two piston range extending levers 121.

[0040] Among them, the rear parts of the two piston range extending levers 121 are hingedly connected to a second auxiliary connecting rod 122; the ends of the two second auxiliary connecting rods 122 are hingedly connected to a control slider 123; the rear end faces of the two control sliders 123 are fixedly connected to a positioning slider 124; a positioning slot 125 is opened in the rear part of the auxiliary seat 110; the two control sliders 123 are slidably connected in the positioning slot 125.

[0041] Among them, the front parts of the two control sliders 123 are fixedly connected to a control rack 126; two transmission shafts 127 are symmetrically rotatably connected in the auxiliary seat 110; the upper parts of the two transmission shafts 127 are coaxially fixedly connected to a control gear 128; the two control gears 128 are respectively aligned with the positions of the two control racks 126; the two control gears 128 are respectively engaged with the two control racks 126.

[0042] The lower parts of the two transmission shafts 127 are coaxially fixedly connected with a control cam 129 ; the rear part of the auxiliary seat 110 is slidably connected with a control push plate 130 ; the two control cams 129 are aligned with the position of the control push plate 130 .

[0043] The specific usage and function of this embodiment: In the present invention, in the process of forging the machine tool shaft accessories, by starting the second control motor 112, the second control motor 112 drives the double-headed screw 111 to rotate, and the rotation of the double-headed screw 111 drives the two adjusting slides 113 to move inward at the same time, and the movement of the two adjusting slides 113 drives the clamping and turning rod 117 to move, and the forged blank is clamped. After the clamping is completed, the first control motor 107 is started to drive the first control motor 107 to drive the turning rotating seat 1 09 rotates, and as the turning rotating seat 109 rotates, the clamped blank is turned over, so that the forging seat 104 can evenly forge the blank, ensuring the processing effect of the machine tool shaft accessories. By starting the third control motor 115, the third control motor 115 drives the adjusting screw 114 to rotate, and the rotation of the adjusting screw 114 drives the adjusting slider 116 to move. As the adjusting slider 116 moves, the clamping turning rod 117 is driven to move, which is convenient for clamping the blank. In the process of moving the adjusting slider 116, it drives The guide slider 119 moves along the guide slot 118 to provide a guide for the adjustment slider 116. During the movement of the adjustment slider 113, the piston range extension lever 121 is driven to swing through the first auxiliary connecting rod 120. As the piston range extension lever 121 swings, the control slider 123 is driven to move. During the movement of the control slider 123, the positioning slider 124 is driven to slide in the positioning slot 125 to provide a guide for the control slider 123. At the same time, the displacement is amplified by the lever arm ratio of the long arm / short arm, and the short stroke of the adjustment slider 113 is turned The long stroke of the control slider 123 allows the control slider 123 to move a long distance even if the position distance of the adjustment slide bar 113 is short. During the movement of the control slider 123, the control rack 126 is driven to move. As the control rack 126 moves, the control gear 128 is driven to rotate. As the control gear 128 rotates, the transmission shaft 127 is driven to rotate. During the rotation of the transmission shaft 127, the control cam 129 is driven to rotate. As the control cam 129 rotates, it squeezes the control push plate 130 to move. Example 2

[0044] Based on Example 1, please refer to Figures 10 to 12As shown, it includes: a piston slide 132, a booster piston slide 133 and a connecting spring 134. The front end surface of the control push plate 130 is fixedly connected to multiple groups of piston slides 132; multiple groups of piston slides 132 are respectively slidably connected in multiple groups of air supply piston boxes 131; the front parts of multiple groups of piston slides 132 are fixedly connected to the booster piston slides 133; multiple groups of booster piston slides 133 are respectively slidably connected in multiple groups of air supply piston boxes 131; the front parts of multiple groups of booster piston slides 133 are fixedly connected to the connecting springs 134; the ends of multiple groups of connecting springs 134 are respectively fixedly connected in multiple groups of air supply piston boxes 131.

[0045] The specific usage and function of this embodiment: In the present invention, in the process of controlling the movement of the push plate 130, the piston slide rod 132 will be driven to slide in the air supply piston box 131. As the piston slide rod 132 slides, the booster piston slide plate 133 will be driven to slide and squeeze the connecting spring 134. At the same time, the rebound of the connecting spring 134 can facilitate the reset of the booster piston slide plate 133, so that the booster piston slide plate 133 can slide back and forth in the air supply piston box 131. In the process of the reciprocating sliding of the air supply piston box 131, as the air supply piston box 131 is pulled outward, the air inlet is opened to inhale air and the exhaust port is closed. When the air supply piston box 131 is pushed inward, the exhaust port is opened to send compressed air into the air guide pipe 135. The air inlet is closed, and the compressed air entering the air guide pipe 135 will be blown out through the purge rack 136 to blow off the oxide scale generated during the forging process of machine tool shaft accessories.

[0046] In this article, there are several points to note: 1. The drawings of this embodiment only involve the structures related to this embodiment. Other structures can refer to the general design.

[0047] 2. In the absence of conflict, the features of this embodiment and the embodiments can be combined with each other to obtain new embodiments.

[0048] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A material turning structure of a forging machine, comprising: Forging workbench; the top surface of the forging workbench is fixedly connected to four supporting guide pillars in a rectangular array; the upper parts of the four supporting guide pillars are fixedly connected to a mounting seat; a hydraulic cylinder is arranged in the mounting seat; it is characterized in that the bottom end surface of the hydraulic cylinder output shaft is fixedly connected to the forging seat; the top surface of the forging workbench is fixedly connected to a blank placement plate; the forging seat and the blank placement plate are aligned; a hydraulic station is arranged on the right side of the forging workbench; the hydraulic cylinder is connected to the hydraulic station through a hydraulic pipeline; the rear end surface of the forging workbench is fixedly connected to the mounting plate; The front end surface of the mounting plate is rotatably connected to a material turning rotating seat; the front part of the material turning rotating seat is fixedly connected to an auxiliary seat; two adjusting slide rods are symmetrically slidably connected inside the auxiliary seat; an adjusting slider is slidably connected inside each of the two adjusting slide rods; a clamping material turning rod is fixedly connected on the inner side of each of the two adjusting sliders; two purge racks are symmetrically fixedly connected to the outside of the auxiliary seat; multiple groups of air supply piston boxes are fixedly connected inside the auxiliary seat; the air outlets of multiple groups of the air supply piston boxes are connected to air guide pipes; the air outlets of the air guide pipes are respectively connected to the air inlets of the two purge racks.

2. A material turning structure for a forging machine according to claim 1, characterized in that: A double-headed screw is rotatably connected inside the auxiliary seat; the threads at both ends of the double-headed screw rotate in opposite directions; a second control motor is fastened to the external bolts of the auxiliary seat; the second control motor is arranged on the left side of the auxiliary seat; the rotating shaft of the second control motor is coaxially fixedly connected to the double-headed screw; two adjusting slide rods are symmetrically threadedly connected to the outside of the double-headed screw.

3. A material turning structure for a forging machine according to claim 1, characterized in that: A first control motor is fastened with bolts on the rear end surface of the mounting plate; and a rotating shaft of the first control motor is coaxially fixedly connected with the material turning rotating seat.

4. A material turning structure for a forging machine according to claim 1, characterized in that: An adjusting screw is rotatably connected inside the two adjusting slide rods; the two adjusting sliders are respectively threadedly connected to the outside of the two adjusting screws; the front of the two adjusting slide rods is bolted and fastened with a third control motor; the rotating shafts of the two third control motors are respectively coaxially fixedly connected to the two adjusting screws.

5. The material turning structure of a forging machine according to claim 1, characterized in that: A group of guide sliders are symmetrically fixedly connected to the outside of the two adjusting sliders; a group of guide slots are symmetrically opened in the two adjusting slide bars; and the two groups of guide sliders are respectively slidably connected in the two guide slots.

6. A material turning structure for a forging machine according to claim 1, characterized in that: The rear parts of the top ends of the two adjusting slide rods are hingedly connected to a first auxiliary connecting rod; two piston range extending levers are symmetrically rotated in the auxiliary seat; the ends of the two first auxiliary connecting rods are respectively hingedly connected to the front parts of the two piston range extending levers.

7. A material turning structure for a forging machine as claimed in claim 6, characterized in that: The rear parts of the two piston range extender levers are hingedly connected to a second auxiliary connecting rod; the ends of the two second auxiliary connecting rods are hingedly connected to a control slider; the rear end surfaces of the two control sliders are fixedly connected to a positioning slider; a positioning slot is provided in the rear part of the auxiliary seat; and the two control sliders are slidably connected in the positioning slot.

8. A material turning structure for a forging machine as claimed in claim 7, characterized in that: The front parts of the two control sliders are fixedly connected to a control rack; two transmission shafts are symmetrically connected to the auxiliary seat for rotation; the upper parts of the two transmission shafts are coaxially fixedly connected to a control gear; the two control gears are aligned with the positions of the two control racks respectively; and the two control gears are engaged with the two control racks respectively.

9. A material turning structure for a forging machine as claimed in claim 8, characterized in that: The lower parts of the two transmission shafts are coaxially fixedly connected with a control cam; the rear part of the auxiliary seat is slidably connected with a control push plate; the two control cams are aligned with the positions of the control push plates.

10. A material turning structure for a forging machine as claimed in claim 9, characterized in that: The front end surfaces of the control push plates are fixedly connected to multiple groups of piston slide rods; the multiple groups of piston slide rods are respectively slidably connected to multiple groups of air supply piston boxes; the front parts of the multiple groups of piston slide rods are fixedly connected to booster piston slide plates; the multiple groups of booster piston slide plates are respectively slidably connected to multiple groups of air supply piston boxes; the front parts of the multiple groups of booster piston slide plates are fixedly connected to connecting springs; the ends of the multiple groups of connecting springs are respectively fixedly connected to multiple groups of air supply piston boxes.

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