Open-mold type mechanical press with bidirectional hedging structure

Abstract

The invention discloses an open-mold type mechanical press with a bidirectional hedging structure, which comprises a lathe bed, a left punching mechanism, a right punching mechanism and a crankshaft transmission mechanism, wherein the lathe bed is used for mounting each device and a hedging device; the left punching mechanism and the right punching mechanism are far away from each other or close to each other to complete bidirectional punching of the workpieces; and the mold opening and closing device comprises a linkage assembly, a mold opening wheel assembly, a connecting rod box, a mold opening and closing driving assembly and a mold closing assembly, the linkage assembly is matched with the mold closing assembly, the reciprocating linear motion of the left stamping mechanism is converted into the lifting motion of the mold opening wheel assembly, and the mold opening wheel assembly lifts to drive the mold opening and closing driving assembly to complete the mold opening and closing motion of the mold cylinder device. Through the designed opposite punching device, bidirectional synchronous opposite punching on the two sides of the workpiece is achieved, the structure is simple and reliable, the punching efficiency and quality are obviously improved, the die opening and closing device and the opposite punching device adopt the same power source and can be accurately matched with the punching action of the opposite punching device, and the die opening and closing action of the die cylinder device is achieved.

Description

Technical Field

[0001] This invention relates to the field of mechanical press technology, and more specifically to an open-type mechanical press with a bidirectional counter-impact structure. Background Technology

[0002] In the field of machining, mechanical presses are widely used in stamping and forming metal products. Mechanical presses can automatically feed, cut, stamp, and unload materials, so that products can be formed in one step in the mold. Different products can be stamped and upholstered simply by changing the mold.

[0003] With increasingly fierce competition in the manufacturing industry, the requirements for stamping precision and quality are becoming higher and higher. Existing mechanical press designs have the following shortcomings: 1. Most current mechanical presses stamp only one side of the workpiece, while some stamp both sides. However, the stamping mechanisms on both sides are relatively independent, making it impossible to achieve stamping synchronization, which easily leads to stamping defects. A small number of machines use mechanisms for simultaneous stamping on both sides, but the design of the power source for synchronous stamping linkage is complex, difficult to manufacture, costly, and prone to malfunctions during operation. 2. Current open-die mechanical presses use separately designed power sources for opening and closing the die, such as hydraulic cylinders, motors, and other power sources. This results in high overall manufacturing costs, and the timing of die opening and closing synchronization is difficult to adjust. Therefore, it is essential to improve existing machines to address these shortcomings and promote the progress of the entire industry. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention provides an open-type mechanical press with a bidirectional counter-impact structure.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: an open-type mechanical press with a bidirectional counter-impact structure, comprising: The bed is used to install various devices, including a mold cylinder device for placing molds.

[0006] The punching device includes a left punching mechanism, a right punching mechanism, and a crankshaft transmission mechanism. The machine bed is equipped with a wheel and axle mechanism that transmits the power source of the equipment to the crankshaft transmission mechanism. The rotation of the crankshaft transmission mechanism drives the left punching mechanism and the right punching mechanism to perform reciprocating linear motion, so that the left punching mechanism and the right punching mechanism move away from or closer to each other, thereby completing the bidirectional synchronous punching of the workpiece.

[0007] The mold opening and closing device includes a linkage component, a mold opening wheel component, a linkage box, a mold opening and closing drive component, and a mold closing component. The linkage box is used to install and connect the components. The linkage component is located on one side of the left stamping mechanism. The linkage component cooperates with the mold closing component to convert the reciprocating linear motion of the left stamping mechanism into the lifting motion of the mold opening wheel component. The lifting and lowering of the mold opening wheel component drives the mold opening and closing drive component to complete the mold opening and closing motion of the mold cylinder device.

[0008] The crankshaft transmission mechanism includes a crankshaft and an eccentric wheel. The two ends of the crankshaft are eccentrically connected to the eccentric wheel, and an eccentric wheel connecting rod is rotatably mounted on the eccentric wheel. The eccentric connection part in the middle of the crankshaft is rotatably connected to the crankshaft connecting rod. The crankshaft drives the right stamping mechanism to reciprocate linear motion through the crankshaft connecting rod. The crankshaft drives the left stamping mechanism to reciprocate linear motion through the eccentric wheel and the eccentric wheel connecting rod. The reciprocating linear motion of the left stamping mechanism drives the linkage component in the mold opening and closing device to perform power conversion.

[0009] The right punching mechanism includes a right punch holder and a right punch assembly. The right punch assembly is mounted on the right punch holder, which is slidably connected to the bed. The end of the crankshaft connecting rod is rotatably connected to the right punch holder. Through the cooperation of the crankshaft connecting rod and the right punch holder, the rotation of the crankshaft is converted into reciprocating linear motion driving the right punch assembly. The left punching mechanism includes a left punch counterweight and a left punch assembly. The left punch counterweight is rotatably connected to the eccentric wheel connecting rod. The crankshaft drives the eccentric wheel to rotate eccentrically. The eccentric wheel and the eccentric wheel connecting rod cooperate to convert the rotation of the crankshaft into reciprocating linear motion of the left punch counterweight and the left punch assembly on it. The reciprocating linear motion of the left punch counterweight drives the linkage component in the mold opening and closing device to perform power conversion.

[0010] When the crankshaft rotates, it drives the right punch holder and its right punch assembly to punch from right to left via the crankshaft connecting rod. Meanwhile, the eccentric wheel and eccentric wheel connecting rod work together to drive the left punch counter-punch holder and its left punch assembly to punch from left to right, forming a synchronous bidirectional counter-punch.

[0011] The linkage component includes a mold opening drive block and a mold opening drive block track plate. The mold opening drive block is slidably installed in the mold opening drive block track plate. A ramp push plate that pushes the mold opening wheel assembly upward is provided in the middle of the mold opening drive block. The mold opening drive block track plate is fixedly connected to the left punch counter-punch frame of the left punching mechanism. The reciprocating linear motion of the left punch counter-punch frame causes the mold opening drive block to both reciprocate linear motion and intermittent inward and outward sliding, ultimately driving the mold opening wheel assembly to move up and down, thereby driving the mold opening and closing drive component to complete the mold opening and closing motion of the mold cylinder device.

[0012] The linkage assembly also includes an inner mold opening inclined block and an outer mold opening inclined block. The inner and outer ends of the mold opening drive block are respectively provided with inclined push surfaces that cooperate with the inner mold opening inclined block and the outer mold opening inclined block. The inner mold opening inclined block is fixed on the bed. The linkage box is provided with an opening and closing guide rail seat that connects the outer mold opening inclined block and the mold opening wheel assembly.

[0013] The mold opening wheel assembly includes a mold opening wheel shaft and a mold opening wheel seat. The mold opening wheel shaft is sleeved inside the mold opening wheel seat, which is also hinged to the mold opening and closing drive assembly. The mold opening wheel seat and the mold opening and closing guide rail seat are slidably connected through the mold opening and closing slide rail assembly.

[0014] The right punch assembly and left punch counter-punch assembly are driven to move closer together to begin the stamping stroke by the right punch holder and left punch counter-punch assembly, respectively. The die opening drive block moves with the left punch counter-punch assembly. When the stamping stroke is about to end and approaching the bottom dead center, the die opening drive block contacts the inner die opening inclined block. The inclined push surface between the two pushes the die opening drive block outward. When the stamping stroke ends and reaches the bottom dead center, the die opening drive block is pushed outward into place, and the inclined push plate on it corresponds to the die opening wheel shaft. The right punch assembly and left punch counter-punch assembly are driven to move away from each other to begin the return stroke by the right punch holder and left punch counter-punch assembly, respectively. The die opening drive block moves in the opposite direction with the left punch counter-punch assembly. When it moves to the set distance, the die opening wheel shaft contacts the inclined push plate. As the return stroke continues, the die opening wheel shaft begins to climb the inclined push plate. The inclined push plate pushes the die opening wheel shaft upward, and the die opening wheel seat connected to the die opening wheel shaft rises accordingly, thereby pushing the die opening wheel shaft upward. The movement of the mold opening and closing drive assembly connected to the wheel seat causes the moving mold cylinder assembly and the stationary mold cylinder assembly on the mold opening and closing cylinder cylinder to move away and separate. After climbing the slope, the road is flat. Thereafter, the moving mold cylinder assembly and the stationary mold cylinder assembly maintain their maximum opening angle. When the return stroke is almost over and close to the top dead center, the mold opening drive block contacts the outer mold opening ramp block. The ramp push surface between the two pushes the mold opening drive block inward. When the return stroke is over and the top dead center is reached, the mold opening drive block is pushed inward into place. The ramp push plate on it releases the support for the mold opening wheel shaft. The mold opening wheel shaft and its connected mold opening wheel seat descend, thereby allowing the mold opening and closing drive assembly to reset under the force of the mold closing assembly. This, in turn, causes the moving mold cylinder assembly and the stationary mold cylinder assembly on the mold opening and closing cylinder cylinder cylinder to move closer and close to form a complete mold cavity. The position of the mold opening drive block track frame plate fixedly connected to the left punch punch frame can be adjusted by the mold opening point adjustment block, thereby adjusting the starting point of mold opening. The mold opening and closing drive assembly includes a mold opening and closing linkage 1, a mold opening and closing linkage 2, a mold opening and closing drive rod, and a mold opening and closing cylinder. One end of the mold opening and closing linkage 1 is rotatably connected to the mold opening and closing drive rod, and the other end is rotatably connected to the linkage box. One end of the mold opening and closing linkage 2 is rotatably connected to the mold opening and closing drive rod, and the other end is rotatably connected to the mold opening and closing cylinder. The other end of the mold opening and closing drive rod is hinged to the mold opening wheel seat. The mold closing assembly abuts against the rotatable connection of the mold opening and closing linkage 1, the mold opening and closing linkage 2, and the mold opening and closing drive rod. The mold closing assembly provides the elastic force for the mold opening and closing drive rod to return to its original position. When the mold opening wheel shaft is pushed upward by the ramp push plate on the mold opening drive block, the mold opening wheel shaft pushes the mold opening and closing drive rod upward. The mold opening and closing drive rod drives the mold opening and closing linkage 1 and the mold opening and closing linkage 2 to rotate. The mold opening and closing linkage 2 pulls the mold opening and closing cylinder and the moving mold cylinder assembly on it backward.

[0015] The mold closing assembly includes a mold closing frame, a return block, a return shaft, and a mold closing spring. The return block is slidably connected to the mold closing frame via the return shaft. The return block abuts against the rotational connection of the mold opening and closing linkage 1, the mold opening and closing linkage 2, and the mold opening and closing drive rod. The mold closing spring provides the restoring force. After the ramp push plate on the mold opening drive block releases the support of the mold opening wheel shaft, the restoring force of the mold closing spring pushes the mold opening and closing drive rod to descend and reset. The mold opening and closing linkage 1 and the mold opening and closing linkage 2 reset accordingly. The mold opening and closing linkage 2 pushes the mold opening and closing cylinder and its moving mold cylinder assembly backward to reset. A return limit rod is provided on the linkage box. The return limit rod is used to limit the falling position of the mold opening and closing drive rod, thereby limiting the falling position of the mold opening wheel shaft that rises and falls synchronously with the mold opening and closing drive rod, so as to ensure that after the ramp push plate on the mold opening drive block releases the support of the mold opening wheel shaft, the mold opening wheel shaft moves in mid-air relative to other components.

[0016] A locking device is provided on the track plate of the mold opening drive block. The locking device can lock the inward and outward sliding of the mold opening drive block. The locking device includes a locking adjustment rod, a pressure spring, and a locking cone top. The side of the mold opening drive block is provided with a locking concave cone. As the left punch counter-punch moves to the dead point of its stroke, the mold opening drive block is pushed to the inner and outer limit positions. At this time, the locking concave cone on the side of the mold opening drive block is aligned with the locking cone top. The locking cone top in the locking device is pressed against the locking concave cone on the side of the mold opening drive block by the elastic force of the pressure spring, locking the position of the mold opening drive block. When the mold opening drive block moves in the opposite direction with the left punch counter-punch, the mold opening drive block disengages from the inner and outer mold opening inclined blocks, and the mold opening drive block will not slide inward or outward. The locking adjustment rod can adjust the elastic force of the pressure spring.

[0017] A buffer device is provided on the track frame plate of the mold opening drive block. The buffer device includes a buffer mounting bracket, a buffer rod, and a buffer spring. When the return stroke ends and the top dead center is reached, the mold opening drive block is pushed inward into place. The ramp push plate on it releases the support for the mold opening wheel axle, and the mold opening wheel axle will fall to the end of the buffer rod for cushioning.

[0018] It also includes a feeding device, which includes a feeding rod, a feeding adjustment component, a feeding guide rod, and a feeding tension spring. The feeding support is connected to the base of the machine bed, and the feeding rod is rotatably connected to the feeding support. One end of the feeding rod is connected to the feeding tension spring, and the other end corresponds to the feeding device on the die cylinder device. The other end of the feeding tension spring is fixed in another position of the equipment to maintain the tension on the feeding rod. The feeding guide rod is fixedly connected to the left punch counter-punch frame and moves synchronously with it in a reciprocating linear motion. The feeding guide rod is provided with a feeding protrusion. As the left punch counter-punch frame moves in a reciprocating linear motion, the feeding guide rod pushes up the feeding adjustment component through the feeding protrusion, thereby lifting and rotating the feeding rod so that its end presses down on the feeding device to complete the feeding. The base of the machine bed is provided with a feeding guide block for positioning the reciprocating linear motion of the feeding guide rod.

[0019] The feeding adjustment assembly includes a feeding adjustment frame and a feeding roller. The feeding adjustment frame is connected to the feeding rod, and the feeding roller is connected to the feeding adjustment frame. With the reciprocating linear motion of the feeding guide rod, the feeding roller and the feeding protrusion make contact. The feeding rod is provided with a feeding adjustment groove, and a feeding adjustment stop bar is provided on one side of the feeding adjustment groove. The feeding adjustment frame includes a feeding adjustment block and a feeding connecting shaft. The feeding adjustment assembly also includes a feeding adjustment screw. The feeding adjustment block is installed in the feeding adjustment groove and is threadedly connected to the feeding adjustment screw. By turning the feeding adjustment screw, the feeding adjustment block is adjusted to the position of the feeding adjustment groove. The feeding adjustment block is locked against the feeding adjustment stop bar by the feeding nut to ensure fixation after adjustment. The feeding roller is rotatably connected to one end of the feeding connecting shaft by multiple nut assemblies.

[0020] It also includes a feeding device, which comprises a feeding box, a feeding bracket, a feeding drive assembly, a feeding driven assembly, a feeding swing arm, and a feeding connecting rod. The feeding drive assembly and the feeding driven assembly are mounted on the feeding box, and the two work together to press or release the bar stock. The feeding drive assembly includes a feeding drive shaft and feeding drive gears and feeding drive rollers fixed at both ends. The feeding driven assembly includes a feeding driven shaft and feeding driven gears and feeding driven rollers fixed at both ends. One end of the feeding connecting rod is connected to the left punch counter-punch frame, and the other end is connected to the feeding swing arm. The feeding swing arm is connected to one end of the feeding drive shaft via a one-way bearing. The feeding drive shaft and the shaft hole of the feeding box are in a clearance fit. When the left punch moves against the punching frame during the punching stroke, the feeding swing arm is driven to swing through the feeding connecting rod. The feeding swing arm swings around the feeding drive shaft. At this time, the feeding drive shaft does not rotate relative to the feeding box. When the left punch moves against the punching frame during the return stroke, the feeding swing arm is driven to swing through the feeding connecting rod. The feeding swing arm drives the feeding drive shaft to rotate, thereby driving the feeding drive assembly and the feeding driven assembly to cooperate.

[0021] A guide rail and guide groove are provided between the feeding box and the feeding bracket for sliding connection. The feeding bracket is also provided with a feeding box adjustment groove, feeding box fixing bolts, and feeding box adjustment screw for sliding connection. The feeding device also includes a feeding clamping cylinder, which is mounted on the feeding box via a bracket. A feeding swing arm is provided in the feeding box. One end of the feeding swing arm is rotatably connected to the feeding box, and the other end is connected to the piston rod of the feeding clamping cylinder. The feeding driven shaft is connected through the feeding swing arm. The feeding clamping cylinder drives the feeding swing arm to move the feeding driven component along the arc-shaped groove trajectory, thereby realizing the cooperation between the feeding driven component and the feeding active component to clamp or release the bar stock.

[0022] The feeding swing arm is equipped with a feeding adjustment groove, a feeding length adjustment block, and a feeding length adjustment screw. The feeding length adjustment block is installed in the feeding adjustment groove and is threadedly connected to the feeding length adjustment screw. The feeding length adjustment block is connected to a feeding adjustment stop bar on one side of the feeding adjustment groove. By turning the feeding length adjustment screw, the feeding length adjustment block is adjusted to be in the feeding adjustment groove. The feeding length adjustment block is locked against the feeding adjustment stop bar by a feeding locking pad to ensure fixation after adjustment.

[0023] It also includes a pressurizing device, which includes a pressurizing guide rod, a pressurizing cylinder, and a pressurizing piston rod. The pressurizing cylinder is installed and connected through a pressurizing cylinder bracket. The pressurizing guide rod is connected and fixed to the left punch counter-punch frame. The pressurizing guide rod moves in a reciprocating linear motion with the left punch counter-punch frame and drives the pressurizing piston rod to move to form pressure. The pressurizing cylinder is connected through an oil pipe to pressurize the mold cylinder device.

[0024] The pressurizing device also includes a pressurizing positioning shaft and a pressurizing return spring. The pressurizing cylinder is provided with a mounting groove. The pressurizing positioning shaft passes through the mounting groove and is connected to the pressurizing cylinder housing. The pressurizing piston rod is slidably connected to the pressurizing positioning shaft through a guide block. The pressurizing return spring is sleeved on the pressurizing positioning shaft to provide elastic force for the pressurizing piston rod to return to its original position. The pressurizing guide rod is correspondingly abutted against the guide block. The base of the bed is provided with a pressurizing guide block for positioning the reciprocating linear motion of the pressurizing guide rod.

[0025] The present invention has the following beneficial effects: 1. This invention achieves bidirectional synchronous punching on both sides of the workpiece through a designed punching device. The structure is simple and reliable. Through the designed power transmission structure, the left and right punching mechanisms achieve precise synchronous movement, which significantly improves the punching efficiency and quality.

[0026] 2. The mold opening and closing device and the punching device designed in this invention use the same power source. Through ingenious design, the reciprocating linear motion of the left punch and punching frame in the punching device is converted into the driving power of the mold opening and closing device. Using the same power source as the punching device not only greatly reduces the manufacturing cost, but also has an ingenious and simple structural design. It can be precisely matched with the punching action of the punching device to realize the mold opening and closing action of the mold cylinder device.

[0027] 3. The feeding device and the punching device designed in this invention use the same power source. Through ingenious design, the reciprocating linear motion of the left punch in the punching device is converted into the driving power for the oscillating feeding of the feeding device. At the same time, it can be adjusted for bars of different diameters to ensure that the feed is aligned with the feed hole in the equipment. The design of the feeding swing rod also makes it easy to adjust the feeding length.

[0028] 4. Based on the structural design of the punching device, this invention provides power to the die opening and closing device, the ejector device, the pressurizing device, and the feeding device simultaneously through the left punch of the punching device. The reciprocating linear motion of the left punch provides working power to each device synchronously, making the stamping synchronization more precise and the stamping quality higher. This invention uses the same power source to provide power to the punching device, the die opening and closing device, the ejector device, the pressurizing device, and the feeding device simultaneously, breaking the traditional design of the industry, greatly reducing manufacturing costs, and promoting industry progress.

[0029] 5. Another significant benefit of this invention is that, because the crankshaft distributes its rotational power evenly into two opposing impact forces through its two eccentric parts, the impact force on the bed, such as the worktable, is significantly reduced, sometimes even to zero, greatly reducing the requirements for the bed's strength and rigidity.

[0030] 6. The opening and closing positions of the mold opening and closing device, the material feeding point position of the material feeding device, and the feeding length of the material feeding device in this invention can all be precisely adjusted according to different stamping requirements, making the overall equipment widely applicable. Attached Figure Description

[0031] Figure 1 , Figure 2 These are perspective views of the present invention from two different directions; Figure 3 This is a structural connection diagram between the machine bed and the counter-punching device in this invention; Figure 4 This is a perspective view of the hedging device in this invention; Figure 5 This is an exploded view of the hedging device in this invention; Figures 6 to 10 This is a cross-sectional schematic diagram of the counter-flush device in different operating states in this invention; Figure 11 , Figure 12 These are perspective views of the opening and closing device in this invention from two different directions; Figure 13 This is an exploded view of the opening and closing device in this invention; Figure 14 , Figure 15 These are perspective views of the drive assembly portion of the opening and closing device of the present invention from two directions. Figure 16 , Figure 17 This is a partially exploded view of the drive assembly in the opening and closing device of the present invention; Figure 18 , Figure 19 This is an exploded view of the connecting rod box, the opening and closing mold drive assembly, and the closing mold assembly in two directions in the opening and closing device of the present invention; Figure 20 This is a perspective view of the feeding device in this invention; Figure 21 This is an exploded view of the feeding device in this invention; Figure 22 , Figure 23 These are perspective views of the pressurization device in this invention from two different directions; Figure 24 This is an exploded view of the pressurization device in this invention; Figure 25 , Figure 26 These are perspective views of the feeding device in this invention from two different directions; Figure 27 , Figure 28 These are exploded views of the feeding device in this invention from two different directions; Figure 29 , Figure 30 These are perspective views of the feeding swing arm portion of the feeding device of the present invention from two different directions; Figure 31 This is an exploded view of the feeding swing arm portion in the feeding device of the present invention. Detailed Implementation

[0032] The invention will be further described with reference to the accompanying drawings.

[0033] Please see Figures 1 to 31 This invention provides an open-type mechanical press with a bidirectional counter-impact structure, comprising: Please refer to Figures 1 to 3 The bed 1 is used to install the following devices. A wheel and axle mechanism 24 is provided on the bed 1. The wheel and axle mechanism 24 includes a flywheel 241, a transmission shaft 242, a pinion 243, and a large gear 244. The wheel and axle mechanism 24 transmits the power source of the equipment on the bed 1. A mold cylinder device for placing molds is also installed on the bed 1. The mold cylinder device includes a moving mold cylinder assembly 71 and a stationary mold cylinder assembly 72.

[0034] Please refer to Figures 3 to 10 The punching device 2 includes a left punching mechanism 21, a right punching mechanism 22, and a crankshaft transmission mechanism 23. The crankshaft transmission mechanism 23 includes a crankshaft 231 and an eccentric wheel 232. The two ends of the crankshaft 231 are eccentrically connected to the eccentric wheel 232. An eccentric wheel connecting rod 234 is rotatably mounted on the eccentric wheel 232. The eccentric connection part in the middle of the crankshaft 231 is rotatably connected to the crankshaft connecting rod 233. The bed 1 is provided with a wheel and axle mechanism 24 that transmits the power source of the equipment to the crankshaft transmission mechanism 23.

[0035] Specifically, the right punching mechanism 22 includes a right punch holder 221 and a right punch assembly 222. The right punch assembly 222 is mounted on the right punch holder 221. The right punch holder 221 is slidably connected to the bed 1. The end of the crankshaft connecting rod 233 is rotatably connected to the right punch holder 221. Through the cooperation of the crankshaft connecting rod 233 and the right punch holder 221, the rotation of the crankshaft 231 is converted into the reciprocating linear motion that drives the right punch assembly 222.

[0036] Specifically, the left punching mechanism 21 includes a left punch counterweight 211 and a left punch assembly 212. The left punch counterweight 211 is rotatably connected to the eccentric wheel connecting rod 234. The crankshaft 231 drives the eccentric wheel 232 to rotate eccentrically. The eccentric wheel 232 cooperates with the eccentric wheel connecting rod 234 to convert the rotation of the crankshaft 231 into the reciprocating linear motion of the left punch counterweight 211 and the left punch assembly 212 on it.

[0037] When crankshaft 231 rotates, it drives right punch holder 221 and its right punch assembly 222 to punch from right to left via crankshaft connecting rod 233. Meanwhile, eccentric wheel 232 and eccentric wheel connecting rod 234 drive left punch counter-punch holder 211 and its left punch assembly 212 to punch from left to right, forming synchronous bidirectional counter-punching. During the punching stroke, right punch assembly 222 and left punch assembly 212 synchronously counter-punch the workpiece placed in the die, while left punch assembly 212 moves through the base 11 of bed 1.

[0038] When the wheel and axle mechanism 24 drives the crankshaft to rotate, such as Figures 6 to 8 The eccentric connection in the middle of the crankshaft 231 is in the stamping stroke from 0 to 180 degrees. When the crankshaft 231 drives the right punch holder 221 and its right punch assembly 222 from right to left through the crankshaft connecting rod 233, the eccentric wheel 232 drives the left punch counter-punch holder 211 and its left punch assembly 212 from left to right, forming synchronous bidirectional counter-punching; Figures 8 to 10 During the return stroke from 180 degrees to 360 degrees, the crankshaft 231 drives the right punch holder 221 to return via the crankshaft connecting rod 233, while the eccentric wheel 232 drives the left punch counter-punch holder 211 to return, thereby causing the right punch assembly 222 and the left punch assembly 212 to move away from the reset position.

[0039] Please refer to Figures 11 to 19The mold opening and closing device 3 includes a linkage component 31, a mold opening wheel component 32, a connecting rod box 33, a mold opening and closing drive component 34, and a mold closing component 35. The connecting rod box 33 is fixed on one side of the bed 1. The mold opening and closing drive component 34 is installed in the connecting rod box 33 and is connected to the moving mold cylinder component 71 through the mold opening and closing cylinder 73. The mold opening wheel component 32 is slidably connected to the connecting rod box 33. The linkage component 31 is located on one side of the left punch counter 211. The linkage component 31 cooperates with the mold closing component 35 to convert the reciprocating linear motion of the left punch counter 211 into the lifting motion of the mold opening wheel component 32.

[0040] Specifically, the mold opening wheel assembly 32 includes a mold opening wheel shaft 321 and a mold opening wheel seat 322. The mold opening wheel shaft 321 is sleeved inside the mold opening wheel seat 322, and the mold opening wheel seat 322 is also hinged to the mold opening and closing drive assembly 34. The connecting rod box 33 is provided with a mold opening and closing guide rail seat 331, and the mold opening wheel seat 322 and the mold opening and closing guide rail seat 331 are slidably connected through the mold opening and closing slide rail assembly 332.

[0041] Specifically, the linkage component 31 includes an inner mold opening inclined block 311, a mold opening drive block 312, an outer mold opening inclined block 313, and a mold opening drive block track plate 314. The inner and outer ends of the mold opening drive block 312 are respectively provided with inclined push surfaces 315 that cooperate with the inner mold opening inclined block 311 and the outer mold opening inclined block 313. The inner mold opening inclined block 311 is fixed to the bed 1, and the mold opening drive block 312 is slidably installed in the mold opening drive block track plate 314. The mold opening drive block track plate 314 is fixedly connected to the left punch counter-punch frame 211, and the outer mold opening inclined block 313 is fixedly connected to the mold opening and closing guide rail seat 331. A ramp push plate 312-1 for pushing the mold opening wheel assembly 32 upwards is provided in the middle of the mold opening drive block 312. To ensure the sliding of the mold opening drive block 312 within the mold opening drive block track plate 314, the mold opening drive block track plate 314 is provided with a drive block groove 314-1 for positioning the mold opening drive block 312. The mold opening drive block track plate 314 is also provided with a drive block sliding device 300, which includes a drive block pulley 301, a pulley shaft 302, a shaft baffle 303, and a baffle bolt 304. The mold opening drive block track plate 314 has a wheel groove 314-2 for mounting the drive block pulley 301. The pulley shaft 302 mounts the drive block pulley 301 in the wheel groove 314-2. The shaft baffle 303 and the baffle bolt 304 cooperate to connect the pulley shaft 302 and the mold opening drive block track plate 314.

[0042] Specifically, the mold opening and closing drive assembly 34 includes a first mold opening and closing connecting rod 341, a second mold opening and closing connecting rod 342, and a mold opening and closing drive rod 343. One end of the first mold opening and closing connecting rod 341 is rotatably connected to the mold opening and closing drive rod 343, and the other end is rotatably connected to the connecting rod box 33. One end of the second mold opening and closing connecting rod 342 is rotatably connected to the mold opening and closing drive rod 343, and the other end is rotatably connected to the mold opening cylinder 73. The other end of the mold opening and closing drive rod 343 is hinged to the mold opening wheel seat 322. The mold closing assembly 35 includes a mold closing frame 351, a return block 352, a return shaft 353, and a mold closing spring 354. The return block 352 is relative to the mold closing frame 351 via the return shaft 353. 1. A sliding installation connection is used. The return block 352 abuts against the rotational connection of the first mold opening and closing linkage 341, the second mold opening and closing linkage 342, and the mold opening and closing drive rod 343. The mold closing spring 354 provides the elastic force for the mold opening and closing drive rod 343 to return. A return limit rod 333 is provided on the linkage box 33. The return limit rod 333 is used to limit the falling position of the mold opening and closing drive rod 343, thereby limiting the falling position of the mold opening wheel shaft 321 that rises and falls synchronously with the mold opening and closing drive rod 343. This ensures that after the ramp push plate 312-1 on the mold opening drive block 312 releases its support for the mold opening wheel shaft 321, the mold opening wheel shaft 321 moves in a suspended position relative to other components.

[0043] The right punch assembly 222 and the left punch assembly 212 are driven to move closer together to begin the stamping stroke by the right punch holder 221 and the left punch counter-punch holder 211, respectively. The mold opening drive block 312 moves with the left punch counter-punch holder 211. When the stamping stroke is about to end and approaching the bottom dead center, the mold opening drive block 312 contacts the inner mold opening inclined block 311. The inclined push surface 315 between the two pushes the mold opening drive block 312 outward. When the stamping stroke ends and reaches the bottom dead center, the mold opening drive block 312 is pushed outward into place, and the inclined push plate 312-1 on it engages with the mold opening... The axle 321 corresponds to the right punch assembly 222 and the left punch assembly 212, which are driven to move away from each other and begin the return stroke via the right punch holder 221 and the left punch counter-punch holder 211, respectively. The mold opening drive block 312 moves in the opposite direction with the left punch counter-punch holder 211. After moving to the set distance, the mold opening axle 321 contacts the ramp of the ramp push plate 312-1. As the return stroke continues, the mold opening axle 321 begins to climb the ramp of the ramp push plate 312-1. The ramp push plate 312-1 pushes the mold opening axle 321 upward, and the mold opening wheel seat 32 connected to the mold opening axle 321... 2. As it rises, it drives the mold opening and closing drive assembly 34 connected to the mold opening wheel seat 322 to move, causing the moving mold cylinder assembly 71 and the stationary mold cylinder assembly 72 on the mold opening and closing cylinder 73 to move away and separate. After climbing the slope, it is a flat road. After that, the moving mold cylinder assembly 71 and the stationary mold cylinder assembly 72 maintain their maximum opening. When the return stroke is almost over and close to the top dead center, the mold opening drive block 312 contacts the outer mold opening inclined block 313. The inclined push surface 315 between the two pushes the mold opening drive block 312 inward. When the return stroke is over and the top dead center is reached, the mold opening drive block 312... Once pushed inward, the inclined push plate 312-1 on it releases its support for the mold opening wheel shaft 321, causing the mold opening wheel shaft 321 and its connected mold opening wheel seat 322 to descend. This allows the mold opening and closing drive assembly 34 to reset under the force of the mold closing assembly 35, thereby driving the moving mold cylinder assembly 71 and the stationary mold cylinder assembly 72 on the mold opening and closing cylinder 73 to approach and close to form a complete mold cavity. The position of the mold opening drive block track frame plate 314, which is fixedly connected to the left punch punch frame 211, can be adjusted by the mold opening point adjustment block 314-2, thereby adjusting the starting point of the mold opening.

[0044] Furthermore, a locking device 100 is provided on the mold opening drive block track plate 314. The locking device 100 can lock the inner and outer sliding of the mold opening drive block 312. The locking device 100 includes a locking adjusting rod 316, a compression spring 317, and a locking cone top post 318. The side of the mold opening drive block 312 is provided with a locking concave cone pit 312-2. As the left punch counter-punch frame 211 moves to the dead point of its stroke, the mold opening drive block 312 is pushed to the inner and outer limit positions. It should be noted that: the mold opening drive block 312 is provided with locking concave cone pits 312-2 on both sides corresponding to the inner and outer limit positions. When the mold opening drive block 312 is pushed to At the inner and outer limit positions, the locking concave pit 312-2 on the side of the mold opening drive block 312 is aligned with the locking conical top post 318. The locking conical top post 318 in the locking device 100 is pressed against the locking concave pit 312-2 on the side of the mold opening drive block 312 by the elastic force of the compression spring 317, locking the position of the mold opening drive block 312. When the mold opening drive block 312 moves in the opposite direction with the left punch counter-punch frame 211, the mold opening drive block 312 will not slide inward or outward after it disengages from the inner and outer mold opening inclined blocks. The locking adjustment rod 316 can adjust the elastic force of the compression spring 317 to improve the stability of the equipment operation.

[0045] Furthermore, a buffer device 200 is provided on the mold opening drive block track frame plate 314. The buffer device includes a buffer mounting bracket 319, a buffer rod 340, and a buffer spring 345. When the return stroke ends and reaches the top dead center, the mold opening drive block 312 is pushed inward into place, and the inclined push plate 312-1 on it releases its support for the mold opening wheel axle 321. The mold opening wheel axle 321 will then fall onto the end of the buffer rod 340 for cushioning. This provides a good buffering effect on the operation of the mold opening wheel axle 321, improving operational stability and service life.

[0046] Please refer to Figure 20 , Figure 21The invention also includes a feeding device 4, which includes a feeding rod 41, a feeding adjustment component 42, a feeding guide rod 43, and a feeding tension spring 44. A feeding support base 45 is connected to the base 11 of the bed 1. The feeding rod 41 is rotatably connected to the feeding support base 45. One end of the feeding rod 41 is connected to the feeding tension spring 44, and the other end corresponds to the unloading device 74 on the mold cylinder device. The other end of the feeding tension spring 44 is fixed in another position of the equipment to maintain the tension on the feeding rod 41. The feeding guide rod 43 is fixedly connected to the left punch counter-punch frame 211. The material feeding guide rod 43 is equipped with a feeding protrusion 431. As the left punch moves back and forth linearly against the punch frame 211, the feeding guide rod 43 lifts the feeding adjustment component 42 through the feeding protrusion 431, thereby lifting and rotating the feeding rod 41 so that its end presses down on the feeding device 74 to complete the feeding. The base 11 of the bed 1 is equipped with a feeding guide block 111 for positioning the reciprocating linear motion of the feeding guide rod 43, and also serves to position the reciprocating linear motion of the left punch against the punch frame 211.

[0047] Furthermore, the feeding adjustment assembly 42 includes a feeding adjustment frame 421 and a feeding roller 422. The feeding adjustment frame 421 is connected to the feeding rod 41, and the feeding roller 422 is connected to the feeding adjustment frame 421. As the feeding guide rod 43 reciprocates linearly, the feeding roller 422 and the feeding protrusion 431 make contact. The feeding rod 41 is provided with a feeding adjustment groove 411, and a feeding adjustment stop bar 411-1 is provided on one side of the feeding adjustment groove 411. The feeding adjustment frame 421 includes a feeding adjustment block 421-1 and a feeding connecting shaft 421-2. The feeding adjustment assembly 42 also includes a feeding adjustment screw 423; a feeding adjustment block 421-1 is installed in the feeding adjustment groove 411 and threadedly connected to the feeding adjustment screw 423. By turning the feeding adjustment screw 423, the feeding adjustment block 421-1 is adjusted to be in the position of the feeding adjustment groove 411. The feeding adjustment block 421-1 is locked against the feeding adjustment stop bar 411-1 by the feeding nut 421-3 to ensure the fixation after adjustment. The feeding roller 422 is rotatably connected to one end of the feeding connecting shaft 421-2 by multiple nut assemblies.

[0048] Please refer to Figures 22 to 24The invention also includes a pressurizing device 5, which includes a pressurizing guide rod 51, a pressurizing cylinder 52, a pressurizing piston rod 53, a pressurizing positioning shaft 55, and a pressurizing return spring 56. The pressurizing cylinder 52 is connected to the base 11 on the bed 1 through a pressurizing cylinder bracket 54. The pressurizing guide rod 51 is connected and fixed to the left punch counterweight 211. The pressurizing positioning shaft 55 is mounted on the pressurizing cylinder 52. The pressurizing piston rod 53 is slidably connected to the pressurizing positioning shaft 55 through a guide block 53-1. The pressurizing return spring 56 is sleeved on the pressurizing positioning shaft 55 and provides the elastic force for the pressurizing piston rod 53 to return to its original position. The pressurizing guide rod 51 moves in a reciprocating linear motion with the left punch counterweight 211 and drives the pressurizing piston rod 53 to move to form pressure. The pressurizing cylinder 52 is connected to the mold opening and closing cylinder 73 through an oil pipe. Furthermore, a pressure boosting guide block 112 is provided on the base 11 of the bed 1. The pressure boosting guide block 112 positions the reciprocating linear motion of the pressure boosting guide rod 51, and also positions the reciprocating linear motion of the left punch against the punch frame 211.

[0049] Please refer to Figures 25 to 31 The invention also includes a feeding device 6, which comprises a feeding box 61, a feeding bracket 62, a feeding active component 63, a feeding driven component 64, a feeding swing rod 66, and a feeding connecting rod 67. The feeding active component 63 and the feeding driven component 64 are mounted on the feeding box 61, and the two cooperate to press or release the bar stock. The feeding active component 63 includes a feeding active shaft 631 and feeding active gears 632 and feeding active rollers 633 fixed at both ends. The feeding driven component 64 includes a feeding driven shaft 641 and feeding driven gears 642 and feeding driven rollers 643 fixed at both ends. One end of the feeding connecting rod 67 is connected to the left punch counter-punch frame 211, and the other end is connected to the feeding swing rod 66. 6. Connection: One end of the feeding swing rod 66 is connected to the feeding drive shaft 631 via a one-way bearing. The feeding drive shaft 631 and the shaft hole 611 of the feeding box 61 are in clearance fit. When the left punch moves against the punch frame 211 during the punching stroke, the feeding swing rod 66 is driven to swing through the feeding connecting rod 67. The feeding swing rod 66 swings around the feeding drive shaft 631. At this time, the feeding drive shaft 631 does not rotate relative to the feeding box 61. When the left punch moves against the punch frame 211 during the return stroke, the feeding swing rod 66 is driven to swing through the feeding connecting rod 67. The feeding swing rod 66 drives the feeding drive shaft 631 to rotate, thereby driving the feeding drive assembly 63 and the feeding driven assembly 64 to cooperate.

[0050] Furthermore, a guide rail 61-1 and a guide groove 62-1 are provided between the feeding box 61 and the feeding bracket 62 for sliding connection. The feeding bracket 62 is also provided with a feeding box adjusting groove 62-2, a feeding box fixing bolt 62-3, and a feeding box adjusting screw 62-4 for sliding connection. The feeding device 6 also includes a feeding pressing cylinder 65, which is mounted on the feeding box 61 via a bracket 65-1. A feeding swing arm 68 is provided in the feeding box 61, with one end of the feeding swing arm 68 rotatably connected to the feeding box 61 and the other end connected to the piston of the feeding pressing cylinder 65. The feed box is connected by a rod, and the feed driven shaft 641 is inserted into the feed swing arm 68. Loosening the feed box fixing bolt 62-3 and turning the feed box adjusting screw 62-4 can move the feed box 61 up and down along the feed box adjusting groove 62-2, thereby adjusting for bars of different diameters to ensure that the feed is aligned with the feed hole in the equipment. The feed pressing cylinder 65 drives the feed swing arm 68 to move the feed driven component 64 along the arc shaft groove 612, thereby enabling the feed driven component 64 and the feed active component 63 to cooperate in pressing or releasing the bar.

[0051] Furthermore, the feeding lever 66 is equipped with a feeding adjustment groove 661, a feeding length adjustment block 662, and a feeding length adjustment screw 663. The feeding length adjustment block 662 is installed in the feeding adjustment groove 661 and is threadedly connected to the feeding length adjustment screw 663. The feeding length adjustment block 662 is provided with a feeding adjustment stop bar 662-1 on one side of the feeding adjustment groove 661. By turning the feeding length adjustment screw 663, the feeding length adjustment block 662 is adjusted to be in the position of the feeding adjustment groove 661. The feeding length adjustment block 662 is locked to the feeding adjustment stop bar 662-1 by the feeding locking pad 662-2 to ensure the fixed position after adjustment.

[0052] Specifically, when the left punch counterweight 211 is in the stamping stroke (i.e., when the right punch assembly 222 and the left punch assembly 212 are driven relatively close to the start of the stamping stroke by the right punch counterweight 221 and the left punch counterweight 211 respectively), the left punch counterweight 211 drives the feeding swing arm 66 to swing through the feeding connecting rod 67. The feeding swing arm 66 swings around the feeding drive shaft 631. At this time, the feeding drive shaft 631 does not rotate relative to the feeding box 61. When the left punch counterweight 211 is in the return stroke (i.e., when the right punch assembly 222 and the left punch assembly 212 are driven relatively away from the return stroke by the right punch counterweight 221 and the left punch counterweight 211 respectively), the left punch counterweight 211 drives the feeding swing arm 66 to swing through the feeding connecting rod 67. The feeding swing arm 66 drives the feeding drive shaft 631 to rotate, thereby driving the feeding drive assembly 63 to cooperate with the feeding driven assembly 64.

[0053] Preferably, the left punch counterweight 211 includes a slide rod 211-1 and a counterweight block 211-2. The left punch assembly 212 and the counterweight block 211-2 are connected by a pin, which facilitates the replacement of the left punch. The structural design of the left punch counterweight 211 facilitates assembly and connection. The eccentric wheel connecting rods 234 at both ends of the crankshaft 231 are respectively connected to the slide rod 211-1. The bed 1 is provided with multiple slide rod guide wheel assemblies 12 and upper positioning roller assemblies 13. The slide rod guide wheel assembly 12 is located below the slide rod 211-1 and plays a supporting and positioning role for the reciprocating linear motion of the slide rod 211-1. The upper positioning roller assembly 13 is located above the slide rod 211-1 and abuts against it, playing a role in preventing the slide rod 211-1 from tilting upward and positioning it.

[0054] The above provides a detailed description of an open-type mechanical press with a bidirectional counter-impact structure provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the technical solutions disclosed in the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An open-type mechanical press with a bidirectional counter-impact structure, characterized in that, include: The bed (1) is used to install various devices, and the bed (1) is also equipped with a mold cylinder device for placing molds; The punching device (2) includes a left punching mechanism (21), a right punching mechanism (22), and a crankshaft transmission mechanism (23); the bed (1) is provided with a wheel and axle mechanism (24) that transmits the power source of the equipment to the crankshaft transmission mechanism (23). The crankshaft transmission mechanism (23) rotates to drive the left punching mechanism (21) and the right punching mechanism (22) to perform reciprocating linear motion, so that the left punching mechanism (21) and the right punching mechanism (22) move away from or closer to each other, thus completing the bidirectional punching of the workpiece; The mold opening and closing device (3) includes a linkage component (31), a mold opening wheel component (32), a linkage box (33), a mold opening and closing drive component (34), and a mold closing component (35). The linkage box (33) is used to install and connect the components. The linkage component (31) is located on one side of the left stamping mechanism (21). The linkage component (31) cooperates with the mold closing component (35) to convert the reciprocating linear motion of the left stamping mechanism (21) into the lifting motion of the mold opening wheel component (32). The lifting motion of the mold opening wheel component (32) drives the mold opening and closing drive component (34) to complete the mold opening and closing motion of the mold cylinder device.

2. The open-type mechanical press with a bidirectional counter-impact structure according to claim 1, characterized in that, The crankshaft transmission mechanism (23) includes a crankshaft (231) and an eccentric wheel (232). The two ends of the crankshaft (231) are eccentrically connected to the eccentric wheel (232). An eccentric wheel connecting rod (234) is rotatably mounted on the eccentric wheel (232). A crankshaft connecting rod (233) is rotatably connected to the eccentric connection part in the middle of the crankshaft (231). The crankshaft (231) drives the right stamping mechanism (22) to reciprocate linearly through the crankshaft connecting rod (233). The crankshaft (231) drives the left stamping mechanism (21) to reciprocate linearly through the cooperation of the eccentric wheel (232) and the eccentric wheel connecting rod (234). The reciprocating linear motion of the left stamping mechanism (21) drives the linkage component (31) in the mold opening and closing device (3) to perform power conversion.

3. The open-type mechanical press with a bidirectional counter-impact structure according to claim 2, characterized in that, The right punching mechanism (22) includes a right punch holder (221) and a right punch assembly (222). The right punch assembly (222) is mounted on the right punch holder (221). The right punch holder (221) is slidably connected to the bed (1). The end of the crankshaft connecting rod (233) is rotatably connected to the right punch holder (221). Through the cooperation of the crankshaft connecting rod (233) and the right punch holder (221), the rotation of the crankshaft (231) is converted into the reciprocating linear motion driving the right punch assembly (222). The left punching mechanism (21) includes a left punch pair. The punch frame (211) and the left punch assembly (212) are rotatably connected to the punch frame (211) and the eccentric wheel connecting rod (234). The crankshaft (231) drives the eccentric wheel (232) to rotate eccentrically. The eccentric wheel (232) cooperates with the eccentric wheel connecting rod (234) to convert the rotation of the crankshaft (231) into the reciprocating linear motion of the left punch frame (211) and the left punch assembly (212) on it. The reciprocating linear motion of the left punch frame (211) drives the linkage assembly (31) in the mold opening and closing device (3) to perform power conversion.

4. An open-type mechanical press with a bidirectional counter-impact structure according to any one of claims 1 to 3, characterized in that, The linkage component (31) includes a mold opening drive block (312) and a mold opening drive block track frame (314). The mold opening drive block (312) is slidably installed in the mold opening drive block track frame (314). A ramp push plate (312-1) is provided in the middle of the mold opening drive block (312) to push the mold opening wheel assembly (32) upward. The mold opening drive block track frame (314) is fixedly connected to the left punch counter-punch frame (211) of the left punch mechanism (21). The reciprocating linear motion of the left punch counter-punch frame (211) causes the mold opening drive block (312) to both reciprocate linear motion and intermittently slide in and out, ultimately driving the mold opening wheel assembly (32) to move up and down, thereby driving the mold opening and closing drive assembly (34) to complete the mold opening and closing motion of the mold cylinder device.

5. An open-type mechanical press with a bidirectional counter-impact structure according to claim 4, characterized in that, The linkage assembly (31) also includes an inner mold opening inclined block (311) and an outer mold opening inclined block (313). The inner and outer ends of the mold opening drive block (312) are respectively provided with inclined push surfaces (315) that cooperate with the inner mold opening inclined block (311) and the outer mold opening inclined block (313). The inner mold opening inclined block (311) is fixed on the bed (1). The linkage box (33) is provided with a mold opening and closing guide rail seat that connects the outer mold opening inclined block (313) and the mold opening wheel assembly (32). (331); During the stamping stroke of the left punch counterweight (211), the die opening drive block (312) moves with the left punch counterweight (211). When the die opening drive block (312) contacts the inner die opening inclined block (311), the die opening drive block (312) is pushed outward by the inclined push surface (315) between the two. When the stamping stroke ends, the die opening drive block (312) is pushed outward into place, and the inclined push plate (312-1) on it and the die opening wheel assembly (3 2) Correspondingly; when the mold opening drive block (312) moves back in the opposite direction with the left punch counter-punch frame (211), the mold opening wheel assembly (32) will climb on the slope of the ramp push plate (312-1). The ramp push plate (312-1) pushes the mold opening wheel assembly (32) up, and the mold opening and closing drive assembly (34) connected to the mold opening wheel assembly (32) rises with it, thereby driving the mold opening wheel assembly (32) connected to the mold opening drive assembly (34) to move, driving the mold cylinder device to split. During the return stroke, when the mold opening drive block (312) contacts the outer mold opening inclined block (313), the mold opening drive block (312) is pushed inward by the inclined push surface (315) that cooperates between the two. The inclined push plate (312-1) releases the support of the mold opening wheel assembly (32), and the mold opening wheel assembly (32) descends, thereby causing the mold opening and closing drive assembly (34) to reset under the force of the mold closing assembly (35), and then drive the mold cylinder device to close to form a complete mold cavity.

6. An open-type mechanical press with a bidirectional counter-impact structure according to claim 5, characterized in that, The mold opening wheel assembly (32) includes a mold opening wheel shaft (321) and a mold opening wheel seat (322). The mold opening wheel shaft (321) is sleeved inside the mold opening wheel seat (322). The mold opening wheel seat (322) is also hinged to the mold opening and closing drive assembly (34). The mold opening wheel seat (322) and the mold opening and closing guide rail seat (331) are slidably connected through the mold opening and closing slide rail assembly (332).

7. An open-type mechanical press with a bidirectional counter-impact structure according to claim 6, characterized in that, The mold opening and closing drive assembly (34) includes a first mold opening and closing connecting rod (341), a second mold opening and closing connecting rod (342), a mold opening and closing drive rod (343), and a mold opening and closing cylinder (73). One end of the first mold opening and closing connecting rod (341) is rotatably connected to the mold opening and closing drive rod (343), and the other end is rotatably connected to the connecting rod box (33). One end of the second mold opening and closing connecting rod (342) is rotatably connected to the mold opening and closing drive rod (343), and the other end is rotatably connected to the mold opening and closing cylinder (73). The other end of the mold opening and closing drive rod (343) is hinged to the mold opening wheel seat (322). The mold closing assembly (35) abuts against the first mold opening and closing connecting rod (341). At the rotational connection of the mold opening and closing linkage (342) and the mold opening and closing drive rod (343), the mold closing assembly (35) provides the elastic force for the mold opening and closing drive rod (343) to reset; when the mold opening wheel shaft (321) is pushed up by the ramp push plate (312-1) on the mold opening drive block (312), the mold opening wheel shaft (321) pushes the mold opening and closing drive rod (343) up, and the mold opening and closing drive rod (343) drives the mold opening and closing linkage (1) (341) and the mold opening and closing linkage (2) (342) to rotate, and the mold opening and closing linkage (2) (342) pulls the mold opening and closing cylinder (73) and the moving mold cylinder assembly (71) on it to retreat.

8. An open-type mechanical press with a bidirectional counter-impact structure according to claim 7, characterized in that, The mold closing assembly (35) includes a mold closing frame (351), a return block (352), a return shaft (353), and a mold closing spring (354). The return block (352) is slidably connected to the mold closing frame (351) via the return shaft (353). The return block (352) abuts against the rotational connection of the first mold opening and closing linkage (341), the second mold opening and closing linkage (342), and the mold opening and closing drive rod (343). The mold closing spring (354) provides the spring force for reset. After the ramp push plate (312-1) on the mold opening drive block (312) releases the support of the mold opening wheel shaft (321), the spring force of the mold closing spring (354) pushes the mold opening and closing drive rod (343) down. Upon resetting, the first mold opening and closing linkage (341) and the second mold opening and closing linkage (342) reset together. The second mold opening and closing linkage (342) pushes the mold opening and closing cylinder (73) and the moving mold cylinder assembly (71) on it to retract and reset. A return limit rod (333) is provided on the linkage box (33). The return limit rod (333) is used to limit the position of the mold opening and closing drive rod (343) from falling, thereby limiting the position of the mold opening wheel shaft (321) which rises and falls synchronously with the mold opening and closing drive rod (343). This ensures that after the ramp push plate (312-1) on the mold opening drive block (312) releases the support of the mold opening wheel shaft (321), the mold opening wheel shaft (321) moves in the air relative to other components.

9. An open-type mechanical press with a bidirectional counter-impact structure according to claim 4, characterized in that, A locking device (100) is provided on the mold opening drive block track plate (314). The locking device (100) can lock the inner and outer sliding of the mold opening drive block (312). The locking device (100) includes a locking adjustment rod (316), a compression spring (317), and a locking cone top post (318). The side of the mold opening drive block (312) is provided with a locking concave cone pit (312-2). As the left punch counter-punch frame (211) moves to the dead point of the stroke, the mold opening drive block (312) is pushed to the inner and outer limit positions. At this time, the locking concave cone pit (312-2) on the side of the mold opening drive block (312) is locked. 12-2) Align with the locking cone top post (318). The locking cone top post (318) in the locking device (100) is pressed against the locking concave cone pit (312-2) on the side of the mold opening drive block (312) by the elastic force of the compression spring (317), locking the position of the mold opening drive block (312). When the mold opening drive block (312) moves in the opposite direction with the left punch counter-punch frame (211), the mold opening drive block (312) will not slide inward or outward after it disengages from the inner and outer mold opening inclined blocks. The locking adjustment rod (316) can adjust the elastic force of the compression spring (317).

10. An open-type mechanical press with a bidirectional counter-impact structure according to claim 4, characterized in that, A buffer device (200) is provided on the mold opening drive block track frame plate (314). The buffer device (200) includes a buffer mounting bracket (319), a buffer rod (340), and a buffer spring (345). When the return stroke ends and the top dead center is reached, the mold opening drive block (312) is pushed inward into place, and the ramp push plate (312-1) on it releases the support of the mold opening wheel axle (321). The mold opening wheel axle (321) will fall to the end of the buffer rod (340) for drop buffering.

11. An open-type mechanical press with a bidirectional counter-impact structure according to claim 3, characterized in that, It also includes a feeding device (4), which includes a feeding rod (41), a feeding adjustment component (42), a feeding guide rod (43), and a feeding tension spring (44). The feeding support base (45) is connected to the base (11) of the bed (1). The feeding rod (41) is rotatably connected to the feeding support base (45). One end of the feeding rod (41) is connected to the feeding tension spring (44), and the other end corresponds to the unloading device (74) on the mold cylinder device. The other end of the feeding tension spring (44) is fixed in other positions of the equipment to maintain the tension on the feeding rod (41). The feeding guide rod (43) The feed guide rod (43) is fixedly connected to the left punch counter-punch frame (211) and moves back and forth in a linear motion synchronously with it. The feed guide rod (43) is provided with a feed protrusion (431). As the left punch counter-punch frame (211) moves back and forth in a linear motion, the feed guide rod (43) pushes up the feed adjustment component (42) through the feed protrusion (431), thereby lifting and rotating the feed rod (41) so that its end presses down on the feed device (74) to complete the feeding. The base (11) of the bed (1) is provided with a feed guide block (111) for positioning the back and forth linear motion of the feed guide rod (43).

12. An open-type mechanical press with a bidirectional counter-impact structure according to claim 11, characterized in that, The feeding adjustment assembly (42) includes a feeding adjustment frame (421) and a feeding roller (422). The feeding adjustment frame (421) is connected to the feeding rod (41), and the feeding roller (422) is connected to the feeding adjustment frame (421). With the reciprocating linear motion of the feeding guide rod (43), the feeding roller (422) and the feeding protrusion (431) make contact. The feeding rod (41) is provided with a feeding adjustment groove (411), and a feeding adjustment stop bar (411-1) is provided on one side of the feeding adjustment groove (411). The feeding adjustment frame (421) includes a feeding adjustment block (421-1) and a feeding connecting shaft (421-2). The feeding adjustment assembly (42) also includes a feeding adjustment screw (423); the feeding adjustment block (421-1) is installed in the feeding adjustment groove (411) and is threadedly connected to the feeding adjustment screw (423). By turning the feeding adjustment screw (423), the feeding adjustment block (421-1) is adjusted to be in the position of the feeding adjustment groove (411). The feeding adjustment block (421-1) is locked against the feeding adjustment stop bar (411-1) by the feeding nut (421-3) to ensure the fixed position after adjustment. The feeding roller (422) is rotatably connected to one end of the feeding connecting shaft (421-2) by multiple nut assemblies.

13. An open-type mechanical press with a bidirectional counter-impact structure according to claim 3, characterized in that, It also includes a feeding device (6), which includes a feeding box (61), a feeding bracket (62), a feeding active component (63), a feeding driven component (64), a feeding swing rod (66), and a feeding connecting rod (67). The feeding active component (63) and the feeding driven component (64) are installed and connected to the feeding box (61). The two cooperate to press or release the bar stock. The feeding active component (63) includes a feeding active shaft (631) and a feeding active gear (632) and a feeding active roller (633) fixed at both ends. The feeding driven component (64) includes a feeding driven shaft (641) and a feeding driven gear (642) and a feeding driven roller (643) fixed at both ends. One end of the feeding connecting rod (67) is connected to the left punch counter-punch frame (211), and the other end is connected to the feeding swing rod (66). 6) Connection; The feeding swing rod (66) is connected to one end of the feeding drive shaft (631) through a one-way bearing. The feeding drive shaft (631) and the shaft hole (611) of the feeding box (61) are in a hole-shaft clearance fit. When the left punch moves against the punch frame (211) during the punching stroke, the feeding swing rod (66) is driven to swing through the feeding connecting rod (67). The feeding swing rod (66) swings around the feeding drive shaft (631) in the air. At this time, the feeding drive shaft (631) does not rotate relative to the feeding box (61). When the left punch moves against the punch frame (211) during the return stroke, the feeding swing rod (66) is driven to swing through the feeding connecting rod (67). The feeding swing rod (66) drives the feeding drive shaft (631) to rotate, thereby driving the feeding drive assembly (63) and the feeding driven assembly (64) to cooperate.

14. An open-type mechanical press with a bidirectional counter-impact structure according to claim 13, characterized in that, A guide rail (61-1) and a guide groove (62-1) are provided between the feeding box (61) and the feeding bracket (62) for sliding connection. The feeding bracket (62) is also provided with a feeding box adjustment groove (62-2), a feeding box fixing bolt (62-3), and a feeding box adjustment screw (62-4) for sliding connection. The feeding device (6) also includes a feeding clamping cylinder (65), which is mounted on the feeding box (61) through a bracket (65-1). A feeding swing arm (68) is provided. One end of the feeding swing arm (68) is rotatably connected to the feeding box (61), and the other end is connected to the piston rod of the feeding pressing cylinder (65). The feeding driven shaft (641) is connected through the feeding swing arm (68). The feeding pressing cylinder (65) drives the feeding swing arm (68) to drive the feeding driven component (64) to move along the arc groove (612) trajectory, thereby realizing the cooperation between the feeding driven component (64) and the feeding active component (63) to press or release the bar stock.

15. An open-type mechanical press with a bidirectional counter-impact structure according to claim 13, characterized in that, The feeding swing arm (66) is provided with a feeding adjustment groove (661), a feeding length adjustment block (662), and a feeding length adjustment screw (663). The feeding length adjustment block (662) is installed in the feeding adjustment groove (661) and is threadedly connected to the feeding length adjustment screw (663). The feeding length adjustment block (662) is provided with a feeding adjustment stop bar (662-1) on one side of the feeding adjustment groove (661). By turning the feeding length adjustment screw (663), the feeding length adjustment block (662) is adjusted to be in the position of the feeding adjustment groove (661). The feeding length adjustment block (662) is locked against the feeding adjustment stop bar (662-1) by the feeding locking pad (662-2) to ensure the fixed position after adjustment.

16. An open-type mechanical press with a bidirectional counter-impact structure according to claim 3, characterized in that, It also includes a pressure boosting device (5), which includes a pressure boosting guide rod (51), a pressure boosting cylinder (52), and a pressure boosting piston rod (53). The pressure boosting cylinder (52) is installed and connected through a pressure boosting cylinder bracket (54). The pressure boosting guide rod (51) is connected and fixed to the left punch counter-punch frame (211). The pressure boosting guide rod (51) moves back and forth linearly with the left punch counter-punch frame (211) and drives the pressure boosting piston rod (53) to move to form pressure. The pressure boosting cylinder (52) is connected through an oil pipe to realize pressure boosting of the mold cylinder device.

17. An open-type mechanical press with a bidirectional counter-impact structure according to claim 16, characterized in that, The pressurizing device (5) also includes a pressurizing positioning shaft (55) and a pressurizing return spring (56). The pressurizing cylinder (52) is provided with an installation groove (52-1). The pressurizing positioning shaft (55) passes through the installation groove (52-1) and is connected to the housing of the pressurizing cylinder (52). The pressurizing piston rod (53) is slidably connected to the pressurizing positioning shaft (55) through the guide block (53-1). The pressurizing return spring (56) is sleeved on the pressurizing positioning shaft (55) and provides the elastic force for the pressurizing piston rod (53) to return. The pressurizing guide rod (51) abuts against the guide block (53-1). The base (11) of the bed (1) is provided with a pressurizing guide block (112) for positioning the reciprocating linear motion of the pressurizing guide rod (51).

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