Intelligent commercial catering equipment blank shearing hydraulic swing type plate shearing machine

Abstract

This invention relates to the field of shearing machine technology, specifically disclosing a hydraulic swing beam shearing machine for cutting blanks in intelligent commercial catering equipment. The machine includes a shearing frame, a lower blade holder mounted on the shearing frame, and an upper blade holder positioned above the lower blade holder. A lifting device is located behind the lower blade holder and includes a guide outer cylinder fixed to the shearing frame, an inner telescopic cylinder vertically slidable within the guide outer cylinder, and a support spring for providing upward support force. A support platform is fixed to the top of the inner telescopic cylinder. The unloading device includes a material support plate slidably mounted on the support platform in a front-to-back direction, a horizontal tension spring positioned between the support platform and the material support plate, and a stripping baffle fixedly mounted on the support platform and located behind the material support plate. The horizontal tension spring keeps the material support plate away from the lower blade holder. The beneficial effect of this invention is to prevent damage to the sheet metal caused by falling.

Description

Technical Field

[0001] This invention relates to the field of shearing machine technology, specifically to a hydraulic swing beam shearing machine for cutting blanks in intelligent commercial catering equipment. Background Technology

[0002] Hydraulic swing beam shearing machines are key blanking equipment used in the metal sheet processing field. Their core working principle utilizes a hydraulic system as a power source to drive a blade holder equipped with upper blades to swing in an arc-like motion around a fixed hinge point, similar to a pendulum. This motion interacts with the lower blade fixed on the lower blade holder to complete the shearing process of the metal sheet. This unique swing-type shearing motion trajectory, compared to traditional mechanical gate-type vertical shearing, allows the blades to gradually contact the sheet material, reducing instantaneous impact load and energy consumption, while improving the stability and controllability of the shearing process. It also produces a smoother cut with minimal deformation, making it particularly suitable for precision machining where high surface finish and straightness are required. Applications include intelligent commercial catering equipment (such as intelligent cooking machines, vending machines, commercial dishwashers, and refrigerated / heated cabinets). During the manufacturing process, most of its components, such as the shell, inner liner, and support, are made of metal sheets with a certain thickness and hardness, such as stainless steel and galvanized steel. This places stringent requirements on the shearing of these blanks: on the one hand, catering equipment emphasizes hygiene and aesthetics, requiring the sheared blanks to have smooth, burr-free edges and precise, consistent dimensions to avoid gaps in subsequent welding and assembly, facilitate cleaning, and ensure structural strength; on the other hand, facing diverse and customized product demands, the production line must have rapid response and flexible processing capabilities. The hydraulic swing beam shearing machine, with its stepless pressure and speed regulation characteristics of the hydraulic system, can accurately adapt to the shearing force requirements of plates of different materials and thicknesses, effectively preventing scratches or deformation of the material surface. Furthermore, its combination with modern numerical control (CNC) systems, high-precision back gauges, and automatic thickness compensation technology upgrades it into an intelligent processing unit.

[0003] Chinese patent document CN222268803U discloses a hydraulic swing beam shearing machine, including a worktable, a shearing mechanism, and a pushing mechanism. A front plate is bolted to the front of the upper end of the worktable, and a baffle is hinged to the lower end of the front plate. A feeding plate is located at the front of the worktable. The shearing mechanism is located inside the rear of the worktable. The pushing mechanism includes a slide groove, a lead screw, a rubber plate, a pushing plate, and a second slider. Slide grooves are provided at the front ends of the inner walls on both the left and right sides of the worktable. A lead screw is rotatably connected between the front and rear inner walls of the slide grooves. A second slider is threadedly connected to the middle of the lead screw. The slide blocks are slidably connected to the interior of adjacent chutes. Both ends of the feeding plate have clearance openings. The upper ends of the slide blocks pass through these clearance openings. A push plate is bolted to the rear sides of the upper ends of the slide blocks, and a rubber plate is bolted to the rear side of the push plate. The lower end of the rubber plate contacts the upper surface of the feeding plate. Automatically pushing the sheet reduces workload and also presses the sheet firmly during the push, improving safety. It also facilitates the collection of cut sheet material. Workers place the sheet material on the upper surface of the feeding plate, aligning the rear end of the sheet with the rubber plate, and then start the motor via the PLC controller. The motor's output shaft simultaneously drives the adjacent lead screw to rotate. The lead screw drives the adjacent slider two to slide backward inside the slide groove. Both the rubber plate and the push plate move backward, pushing the sheet material to the shearing position, thus achieving automatic plate pushing and reducing the workload of workers. When the sheet material is pushed to the lower end of slider one, slider one slides between the slide rods, so that the clamping wheels are located on the left and right sides of the sheet material. Then, the adjusting nut is turned, and the sliding frame slides downward. The outer arc surface of the clamping wheel contacts the upper surface of the sheet material, achieving clamping of sheet material of any size before shearing. After the sheet material is pushed to the appropriate position, the motor is turned off, and the rubber plate no longer moves. The telescopic end of hydraulic cylinder one extends, the connecting plate and the clamping column descend, and the lower end of the clamping column contacts the upper surface of the plate. The spring contracts to prevent excessive clamping of the plate, which could lead to deformation or malfunction of hydraulic cylinder one, thus achieving clamping during plate shearing. Then, the telescopic end of hydraulic cylinder two extends, pushing the blade holder to rotate clockwise. The blade rotates synchronously to shear the plate. The sheared plate falls to the top of the collecting plate under gravity. The rear end of the collecting plate is inclined, which slows down the downward speed of the plate and reduces the impact force on the sheared plate. After the plate shearing is completed, the cabinet door is opened and the plate is taken out, which is convenient and safe.

[0004] In the aforementioned technology, after the panels are cut by the cutting equipment, they fall directly downwards due to gravity and accumulate on the panel stack below. However, due to the lack of effective buffering or guiding devices, the panels are often in a disordered state during the falling and stacking process. This necessitates the intervention of operators to sort and stack these messy panels one by one before they can be transported to the next process for further processing. During this process, due to the direct fall, collisions, or contact with the equipment, the edges of the panels are easily impacted and bent, and the surface may also develop dents, scratches, and other defects due to impacts, thereby damaging the panels and affecting product quality and subsequent processing accuracy. Summary of the Invention

[0005] This invention provides a hydraulic swing beam shearing machine for cutting blanks in intelligent commercial catering equipment, aiming to solve the problems in related technologies where direct dropping of plates leads to messy plate piles, and the edges of the plates are bent and surface dented due to impact.

[0006] A hydraulic swing beam shearing machine for cutting blanks in intelligent commercial catering equipment includes a shearing frame, a lower blade holder mounted on the shearing frame, and an upper blade holder disposed above the lower blade holder, and further includes:

[0007] The lifting device includes a guide outer cylinder fixed on the shearing machine frame, an inner telescopic cylinder vertically slidably disposed in the guide outer cylinder, and a support spring for providing upward support force. A support platform is fixed to the top of the inner telescopic cylinder.

[0008] The unloading device includes a material support plate that is slidably disposed on a support platform in the front-back direction, a horizontal tension spring disposed between the support platform and the material support plate, and a stripping baffle fixedly disposed on the support platform and located on the rear side of the material support plate. The horizontal tension spring is used to keep the material support plate away from the lower cutter holder.

[0009] The detection device includes a sensing rod that is slidably mounted on a material support plate in a vertical direction. The bottom end of the sensing rod extends below the material support plate and is used to contact the surface of the finished product stack. The material support plate is provided with a locking component for locking the material support plate near the lower cutter seat. When the sensing rod touches the surface of the finished product stack and moves upward relative to the material support plate, the sensing rod triggers the locking component to unlock.

[0010] Its effects are as follows: Through the mechanical linkage of the lifting device, the unloading device and the detection device, the problem of collision damage during the unloading process of the hydraulic swing beam shearing machine is solved. Through the cooperation of the support platform and the sensing rod, the follow-up support and vertical dropping of the plate are realized. When the sensing rod touches the top surface of the finished product stack, the displacement difference triggers the unlocking, so that the support plate is pulled back horizontally under the action of the horizontal tension spring, thereby eliminating the bending deformation of the thin plate edge caused by the impact of the high drop. Furthermore, through height adaptive sensing, it is ensured that the dropping height is maintained with a small drop regardless of the change in the height of the finished product stack, thereby improving the neatness of the billet stack and the processing quality.

[0011] Preferably, the support platform is provided with a pressure block on its side and a downward pressing boss is fixedly installed on the side of the upper blade holder. When the upper blade holder swings downward to perform shearing, the downward pressing boss abuts against and pushes the pressure block, so that the inner telescopic cylinder overcomes the elastic force of the support spring and moves downward synchronously.

[0012] Its effect is as follows: by setting a pressure block on the side of the support platform and forming a tight fit with the downward pressure boss on the upper blade holder, the unloading mechanism and the shearing action are highly synchronized. It does not rely on an additional power source or a complex electronic control and sensing system. It can effectively drive the lifting device to descend smoothly by relying solely on the pressure of the arc trajectory naturally generated by the upper blade holder during the downward swing. This ensures that the material support plate is accurately positioned below the blade at the beginning of the shearing process and dynamically conforms to the height change of the blade throughout the entire shearing process. This ensures that the unloading process is synchronized with the shearing action, which not only improves the reliability of the equipment operation but also simplifies the overall structural design.

[0013] Preferably, the upper surface of the support platform is provided with two sets of horizontal linear guide rails extending in the front-back direction, and the bottom of the material support plate is provided with a slider that cooperates with the horizontal linear guide rails.

[0014] Its effect is as follows: by setting a horizontal linear guide rail and slider cooperation structure on the upper surface of the support platform, it provides extremely high motion guidance accuracy and stability for the high-speed extraction movement of the material support plate. At the moment of unloading after shearing, the material support plate needs to complete the backward horizontal displacement in a very short time to achieve vertical material drop. The linear guide rail not only greatly reduces the sliding friction resistance, but also makes the energy release of the horizontal tension spring smoother. The parallel setting of the double rails effectively offsets the lateral torque caused by the offset of the plate's center of gravity, avoiding the material support plate from tilting or jamming during the sliding process, and ensuring the consistency of motion under long-term high-frequency operation.

[0015] Preferably, a highly flexible rubber roller is installed at the bottom end of the sensing rod, and the rubber roller is used to roll on the surface of the finished product pile when the material support plate slides horizontally.

[0016] Its effect is that during the horizontal sliding and retraction of the material support plate, the sensing rod will also undergo horizontal displacement. As the roller contacts the top surface of the finished product stack, the original sliding friction is transformed into rolling friction. The highly flexible rubber material has good shock absorption and buffering performance, which can absorb minor mechanical vibrations and prevent the hard sensing rod from scratching or wearing down the surface of the finished product plate already stacked below during the retraction.

[0017] Preferably, the locking assembly includes a locking hook rotatably mounted on the material support plate and a torsion spring for resetting the locking hook, wherein the material support plate is in an initial position near the lower cutter holder, and the locking hook is engaged with a pin on the support platform.

[0018] Its effect is as follows: the rotating structure design of the locking hook and the torsion spring is used to form a set of efficient and reliable mechanical trigger switches. The torsion spring, as an elastic element, can continuously provide a stable and constant preload. This preload acts on the locking hook to ensure that it can be firmly and accurately fastened to the pin of the support platform in the initial installation state. This avoids the violent vibration and impact generated by the hydraulic swing beam shearing machine during operation, thereby preventing the material support plate from being accidentally displaced or loosened, and greatly improving the stability and safety of the equipment operation.

[0019] Preferably, the stripping baffle includes a crossbeam arranged laterally at the rear end of the support platform. The vertical projection of the crossbeam is located above the sliding path of the material support plate, which is used to prevent the plate from moving when the material support plate slides backward, and to force the plate to fall vertically into the finished product pile.

[0020] Its effect is as follows: by setting a transverse beam at the rear end of the support platform and setting its vertical projection on the sliding path of the pallet, when the pallet carrying the plate is quickly pulled backward, the unloading baffle blocks the plate, causing it to remain in its original position due to inertia and baffle resistance, forcing the plate to separate from the pallet. Since the space below has been emptied by the retracted pallet, the plate only needs to make a very small downward displacement to be vertically attached to the surface of the finished product stack. This avoids edge friction and scratches on the plate during unloading, making the finished product stack neat and uniform, and reducing the amount of manual handling work in the later stage.

[0021] Preferably, it also includes a forced reset component, which includes a reset wedge block fixed on the shearing machine frame and a reset roller on the material support plate. When the inner telescopic cylinder returns upward, the reset roller hits the reset wedge block and drives the material support plate to slide back to its original position in the direction close to the lower blade holder.

[0022] Its advantages are as follows: By abutting the reset wedge and the reset roller, the residual force of the lifting device's upward return stroke is used to complete the mechanism's reset action. When the shearing operation ends and the mechanism rises with the cutter holder, the reset wedge forces the material support plate to move forward against the direction of the tension spring and return to its original position, eliminating the need for external drive energy and reducing energy consumption. Simultaneously, the wedge-shaped surface design at the front end of the locking hook, in conjunction with the pin, enables automatic jumping and reset locking, allowing the mechanism to be ready for the next material receiving operation as soon as it reaches the top, thereby improving the overall operating frequency and the stability of the automated cycle.

[0023] Preferably, the material support plate is provided with a limiting ring for limiting the downward limit position of the sensing rod, and a reset spring is provided between the sensing rod and the material support plate. In the initial state, the reset spring causes the bottom end of the sensing rod to be 50mm-100mm lower than the lower surface of the material support plate.

[0024] Its effect is as follows: by setting a limiting ring and a return spring on the material support plate, the elastic support provided by the return spring and the rigid braking of the limiting ring are combined to ensure that the sensing rod always maintains a constant downward extension height (50mm-100mm) in the non-contact state. This ensures that during the downward movement of the mechanism, the sensing rod can contact the surface of the finished product stack before the material support plate, thereby unlocking the locking component by relative displacement through the order of contact time.

[0025] Preferably, the end of the horizontal linear guide is provided with a hydraulic damper to absorb the impact energy generated by the material support plate sliding backward rapidly under the action of the horizontal tension spring.

[0026] Its effects are as follows: The hydraulic damper installed at the end of the horizontal linear guide rail improves the service life of the equipment. Due to the great acceleration generated when the horizontal tension spring is released, the material plate will generate a huge impact when sliding backward to the end point. The hydraulic damper can smoothly absorb the impact energy of the material plate through its energy-saving characteristics, eliminating the severe noise and mechanical vibration generated by metal impact. It not only protects the slider, guide rail and support platform from damage and deformation due to long-term fatigue impact, but also maintains the fitting accuracy of each precision part in the detection device. Thus, it can maintain the long-term stable operation of the equipment, reduce the frequency of maintenance and meet the industrial noise limit standards.

[0027] Preferably, the bearing surface of the material support plate is provided with a polytetrafluoroethylene friction-reducing layer, which is used to reduce the friction between the plate and the material support plate at the moment of unloading.

[0028] Its effects are as follows: The PTFE anti-friction layer on the bearing surface of the support plate can reduce the frictional resistance between the plate and the support plate. PTFE has an extremely low coefficient of friction and excellent self-lubricating properties. When the unloading action is started, it can significantly reduce the horizontal drag force on the plate, making the removal process of the support plate smoother, reducing the demand for horizontal tension spring force, and more importantly, preventing stick friction between the bottom surface of the plate and the support plate, further avoiding scratches on the surface of the finished product stack that may be caused by horizontal drag force.

[0029] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0030] 1. By establishing a coordination between the upper blade holder and the lifting device, the material support plate is kept close to the blade edge and its height decreases with the movement during the shearing process, which greatly reduces the free fall stroke of the plate at the moment of shearing. Combined with the horizontal extraction and vertical dropping process, the tilting impact in the traditional sliding unloading is transformed into vertical contact with zero horizontal initial velocity, eliminating the edge bending of thin plates caused by drop collision. At the same time, it eliminates the relative sliding friction between plates. Combined with the polytetrafluoroethylene anti-friction layer on the surface of the material support plate and the rolling friction design at the bottom of the sensing rod, it enables the processing of plates with high surface requirements (such as stainless steel plates commonly used in catering equipment).

[0031] 2. Using the sensor rod as a physical detection element, the current top surface of the finished product stack is used as the trigger reference. The unlocking is directly controlled by the relative displacement difference generated by the bottom contact. This enables unloading at a constant preset drop from the plate surface regardless of the change in the height of the finished product stack below. This ensures the consistency of the dropping kinetic energy, making the finished products stack neatly and avoiding the unloading difficulties or collisions caused by the stacking height in the traditional fixed-position dropping mode.

[0032] 3. By directly mounting the sensing rod on the movable support plate, the sensing rod can move backward synchronously with the support plate after completing the height detection and trigger unlocking process. This ensures that there is no mechanical interference in the falling projection path of the plate when it is falling vertically, thus improving the operational safety of the equipment while ensuring the compactness of the mechanism.

[0033] 4. The entire device adopts a purely mechanical structure design, without involving electronic sensors, solenoid valves and control programs. This avoids the interference and damage risks to electronic components caused by strong vibrations, high-pressure pulses, metal chips and oil stains in the shearing machine operating environment, reducing the equipment failure rate and maintenance costs. All action processes are realized by utilizing the residual force of the upper blade holder and the energy stored in the spring, without the need for an additional power system. The structure is simple and the operation is convenient. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0035] Figure 2 This is a rear view of the shearing machine frame of the present invention.

[0036] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0037] Figure 4 This is a front view of the tool holder and support platform of the present invention.

[0038] Figure 5 This is a top view of the material support plate of the present invention.

[0039] Figure 6 This is a cross-sectional view of the material support plate of the present invention.

[0040] Figure 7 This is a left view of the sensing rod of the present invention.

[0041] Figure label:

[0042] 1. Shearing machine frame; 11. Reset inclined block; 2. Lower blade holder; 3. Upper blade holder; 31. Lower pressing boss; 4. Lifting device; 41. Guide outer cylinder; 42. Inner telescopic cylinder; 43. Support platform; 44. Pressure block; 5. Unloading device; 51. Horizontal linear guide rail; 52. Material support plate; 53. Horizontal tension spring; 54. Unloading baffle; 55. Locking assembly; 551. Locking hook; 552. Pin shaft; 56. Mounting block; 57. Reset roller; 6. Detection device; 61. Sensing rod; 62. Rubber roller; 63. Reset spring. Detailed Implementation

[0043] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0044] like Figures 1-7 As shown in the figure, an intelligent commercial catering equipment billet shearing hydraulic swing beam shearing machine according to an embodiment of the present invention includes a shearing machine frame 1, a lower blade holder 2, an upper blade holder 3, a lifting device 4, a feeding device 5, and a detection device 6. The lower blade holder 2 is fixedly installed on the front side of the shearing machine frame 1 to carry the metal billet to be sheared. The upper blade holder 3 is installed on the shearing machine frame 1 and swings in an arc relative to the lower blade holder 2 under the drive of the main hydraulic cylinder to shear the billet. The lifting device 4 is located directly behind the lower blade holder 2 and is used to place the sheared plate onto the finished product pile below. The feeding device 5 is located on the lifting device 4 and is used to unload the plate from the lifting device 4 onto the finished product pile below. The detection device 6 is located on the feeding device 5 and is used to detect the height of the finished product pile and cause the feeding device 5 to unload the plate.

[0045] In the initial state, the lifting device 4 is at its highest position. First, the operator feeds the blank to be processed into the designated position of the lower cutter holder 2. Then, the upper cutter holder 3 starts and performs a swing shearing action to accurately cut the blank into the required plates. After shearing, the newly formed plates automatically fall onto the receiving surface of the unloading device 5. Then, as the upper cutter holder 3 continues to move downward, the lifting device 4 begins to work in coordination, driving the unloading device 5 to move downward slowly in sync to ensure the stability of the plate conveying. During this process, the detection device 6 monitors the height and position of the plate stack below in real time. Once the plate stack is detected to have reached the preset conditions, the unloading device 5 will perform an unloading operation, smoothly and accurately unloading the freshly sheared plates onto the plate stack below, thereby ensuring the neatness and safety of the stack.

[0046] like Figures 1-7 As shown, the lifting device 4 includes two sets of symmetrically arranged guide cylinders 41 fixed on the shearing machine frame 1. The inner wall of the guide cylinder 41 is provided with a self-lubricating bushing, and an inner telescopic cylinder 42 is inserted inside it. The inner telescopic cylinder 42 can slide freely along the guide cylinder 41 in the vertical direction.

[0047] A support platform 43 is fixed to the top of the inner telescopic cylinder 42 by high-strength bolts. A support spring (not shown in the figure) is provided between the guide outer cylinder 41 and the inner telescopic cylinder 42. The support spring passes through the inside of the inner telescopic cylinder 42. The lower end of the support spring abuts against the upper end face of the guide outer cylinder 41, and the upper end of the support spring abuts against the bottom surface of the support platform 43.

[0048] Pressure blocks 44 are provided on the upper surface of the support platform 43 near the left and right ends. Correspondingly, pressure bosses 31 are fixedly installed on the left and right sides of the upper blade holder 3. When the upper blade holder 3 swings downward to perform shearing operations, the pressure bosses 31 move downward synchronously. The pressure bosses 31 abut against and press down on the pressure blocks 44, thereby forcibly driving the inner telescopic cylinder 42 to overcome the elastic force of the support spring and move downward, ensuring that the support platform always remains horizontal and that the displacement is synchronized with the downward movement of the blade.

[0049] like Figures 1-7As shown, the feeding device 5 includes two sets of horizontal linear guides 51, a material support plate 52, a horizontal tension spring 53, a stripping baffle 54, and a locking assembly 55. The two sets of horizontal linear guides 51 extending in the front-back direction are arranged parallel to each other on the upper surface of the support platform 43. The material support plate 52 serves as the direct support for the finished product, and four sets of sliders are installed at its bottom. The material support plate 52 is slidably mounted on the horizontal linear guides 51 in the front-back direction via the sliders. The horizontal tension spring 53 is located between the support platform 43 and the material support plate 52. An mounting block 56 is provided on the upper surface of the material support plate 52. The rear end of the horizontal tension spring 53 is fixedly connected to the support platform 43, and the front end of the horizontal tension spring 53 is fixedly connected to the mounting block 56. The stripping baffle 54 is located on the support platform 43. The locking assembly 55 is located near the rear end of the front end face of the material support plate 52. The locking assembly 55 is used to lock or disconnect the material support plate 52 from the support platform 43.

[0050] In the initial receiving state, the material support plate 52 is locked near the lower cutter holder 2 by the locking assembly 55, at which time the horizontal tension spring 53 is in a state of extreme tension and energy storage.

[0051] A polytetrafluoroethylene (PTFE) friction-reducing layer is bonded to the bearing surface of the support plate 52. The presence of this friction-reducing layer reduces the friction between the support plate 52 and the finished part during unloading, thus preventing displacement deviation of the plate due to static friction during the removal process.

[0052] The stripping baffle 54 is a crossbeam spanning above the two sets of guide rails. The vertical projection of the stripping baffle 54 is located above the sliding path of the support plate 52, and the front side of the baffle is aligned with the rear edge of the finished part. When the support plate 52 slides backward under the action of the horizontal tension spring 53, the stripping baffle 54 will block the plate and force it to stop moving, thereby achieving vertical separation between the plate and the support plate 52.

[0053] A hydraulic damper (not shown in the figure) is provided at the extreme position of the end of the horizontal linear guide 51 to absorb the high-speed kinetic energy of the material support plate 52 when the unloading action is completed, thereby reducing mechanical impact noise.

[0054] The detection device 6 includes a sensing rod 61 that is slidably mounted on the front end of the material support plate 52 in a vertical direction. The material support plate 52 has a guide hole through which the sensing rod 61 passes.

[0055] A highly flexible rubber roller 62 is installed at the bottom of the sensing rod 61. The roller is used to roll on the surface of the finished product pile instead of sliding friction when the sensing rod 61 moves horizontally with the material support plate 52, thereby protecting the surface of the finished product below. A limiting ring is provided in the middle section of the sensing rod 61 to limit its downward movement. A return spring 63 is also provided between the sensing rod 61 and the material support plate 52. In the initial state, the return spring 63 relies on gravity and a weak elastic force to keep the bottom of the sensing rod 61 about 50mm-100mm below the lower surface of the material support plate 52.

[0056] The locking assembly 55 includes a rotatably mounted locking hook 551 and a torsion spring (not shown in the figure). A pin 552 is fixedly mounted on the support platform 43. The locking hook 551 is rotatably mounted on the material support plate 52. The locking hook 551 consists of a horizontal section and a vertical section. The two ends of the torsion spring are connected to the locking hook 551 and the material support plate 52, respectively. When the material support plate 52 is close to the lower cutter holder 2, the locking hook 551 is engaged with the pin 552 on the support platform 43 under the action of the torsion spring. At this time, the vertical section of the locking hook 551 is located at the front end of the pin 552 and abuts against the pin 552. When the roller of the sensing rod 61 contacts the finished product pile and is forced to move upward relative to the material support plate 52, the top end of the sensing rod 61 will push up the vertical section of the locking hook 551, causing the locking hook 551 to rotate around the axis and disengage from the pin 552, thereby releasing the material support plate 52.

[0057] like Figures 1-7 As shown, a forced reset assembly is also provided on the shearing machine frame 1. The forced reset assembly includes a reset wedge block 11, which is fixedly installed on the shearing machine frame 1. A corresponding reset roller 57 is installed on the material support plate 52. When the inner telescopic cylinder 42 returns upward under the action of the support spring, the reset roller 57 will contact and impact the inclined surface of the reset wedge block 11 along the trajectory, generating a lateral force, thereby driving the material support plate 52 to slide and return to its original position closer to the lower blade holder 2. A wedge-shaped surface is provided at the front end of the vertical section of the locking hook 551. When the wedge-shaped surface of the locking hook 551 abuts against the pin 552, the locking hook 551 deflects under the guidance of the wedge-shaped surface. After the vertical section of the locking hook 551 passes the pin 552, the locking hook 551 resets under the action of the torsion spring. At this time, the vertical section of the locking hook 551 is once again located at the front end of the pin 552, and the locking hook 551 locks the material support plate 52 and the support platform 43 again.

[0058] The specific working principle of this invention embodiment:

[0059] In the initial state, the support platform 43 is at its highest position, the material support plate 52 is locked to the support platform 43, the sensing rod 61 is in a natural downward state, the billet is fed into the lower cutter holder 2, the upper cutter holder 3 starts swinging shearing, and the cut plate falls smoothly onto the material support plate 52 with a polytetrafluoroethylene anti-friction layer.

[0060] While the upper blade holder 3 is shearing, it presses the pressure block 44 through the lower pressing boss 31. The support platform 43 moves downward synchronously with the finished plate, the material support plate 52 and the sensing rod 61. During this stage, there is no relative displacement between the plate and the material support plate 52, which avoids deformation caused by collision.

[0061] As the support platform 43 continues to descend, the rubber roller 62 at the bottom of the sensing rod 61 first contacts the surface of the existing finished product pile below, causing the sensing rod 61 to stop falling, while the material support plate 52 continues to descend with the main frame. The relative displacement between the two causes the top of the sensing rod 61 to push upwards, unlocking the vertical section of the locking hook 551.

[0062] At the moment the lock is released, the horizontal tension spring 53, which is under tension, releases energy and instantly pulls the material support plate 52 to slide backward quickly. At this time, the plate is blocked by the stripping baffle 54 and cannot move backward. The material support plate 52 is smoothly pulled away from under the plate. The finished product falls vertically under the action of gravity and adheres to the top of the finished product pile. The sensing rod 61 moves backward synchronously with the material support plate 52 and rolls over the surface.

[0063] After shearing is completed, the upper blade holder 3 rises, and the lower pressure boss 31 plate is removed. The support platform 43 rises under the action of the support spring. During the rise, the reset roller 57 collides with the reset inclined block 11, forcibly driving the material support plate 52 to move forward and reset, and is automatically locked by the locking hook 551, ready to enter the next cycle.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A hydraulic swing beam shearing machine for cutting blanks in intelligent commercial catering equipment, comprising a shearing machine frame, a lower blade holder mounted on the shearing machine frame, and an upper blade holder disposed above the lower blade holder, characterized in that, Also includes: The lifting device includes a guide outer cylinder fixed on the shearing machine frame, an inner telescopic cylinder vertically sliding inside the guide outer cylinder, and a support spring for providing upward support force. A support platform is fixed to the top of the inner telescopic cylinder. A pressure block is provided on the side of the support platform, and a downward pressure boss is fixed to the side of the upper blade holder. When the upper blade holder swings downward to perform shearing, the downward pressure boss abuts against and pushes the pressure block, so that the inner telescopic cylinder overcomes the elastic force of the support spring and moves downward synchronously. The unloading device includes a material support plate that is slidably disposed on a support platform in a front-back direction, a horizontal tension spring disposed between the support platform and the material support plate, and a material ejection baffle fixedly disposed on the support platform and located on the rear side of the material support plate. The horizontal tension spring is used to keep the material support plate away from the lower cutter holder. The material support plate is provided with a locking component for locking the material support plate in a position close to the lower cutter holder. The locking assembly includes a locking hook rotatably mounted on the material support plate and a torsion spring for resetting the locking hook. When the material support plate is in its initial position near the lower cutter holder, the locking hook engages with a pin on the support platform. The stripping baffle includes a horizontal beam arranged at the rear end of the support platform. The vertical projection of the beam is located above the sliding path of the material support plate. It is used to prevent the plate from moving when the material support plate slides backward, and to force the plate to fall vertically into the finished product pile. The shearing machine frame is also equipped with a forced reset assembly, which includes a reset wedge block fixed on the shearing machine frame, a reset roller on the material support plate, and a wedge-shaped surface at the front end of the locking hook. When the inner telescopic cylinder returns upward, the reset roller hits the reset wedge block and drives the material support plate to slide back to its original position towards the lower blade holder. The detection device includes a sensing rod that is slidably mounted on a material support plate in a vertical direction. The bottom end of the sensing rod extends below the material support plate and is used to contact the surface of the finished product stack. When the sensing rod touches the surface of the finished product stack and moves upward relative to the material support plate, the sensing rod triggers the locking assembly to unlock.

2. The intelligent commercial catering equipment billet shearing hydraulic swing beam shearing machine according to claim 1, characterized in that, The upper surface of the support platform is provided with two sets of horizontal linear guide rails extending in the front-to-back direction, and the bottom of the material support plate is provided with a slider that cooperates with the horizontal linear guide rails.

3. The intelligent commercial catering equipment billet shearing hydraulic swing beam shearing machine according to claim 1, characterized in that, The bottom end of the sensing rod is equipped with a highly flexible rubber roller, which is used to roll on the surface of the finished product pile when the material support plate slides horizontally.

4. The intelligent commercial catering equipment billet shearing hydraulic swing beam shearing machine according to claim 1, characterized in that, The material support plate is provided with a limiting ring for limiting the downward limit position of the sensing rod, and a return spring is provided between the sensing rod and the material support plate. In the initial state, the return spring makes the bottom end of the sensing rod 50mm-100mm lower than the lower surface of the material support plate.

5. A hydraulic swing beam shearing machine for cutting billets in intelligent commercial catering equipment according to claim 2, characterized in that, The end of the horizontal linear guide is equipped with a hydraulic damper to absorb the impact energy generated by the material support plate sliding backward rapidly under the action of the horizontal tension spring.

6. A hydraulic swing beam shearing machine for cutting billets in intelligent commercial catering equipment according to claim 1, characterized in that, The material support plate has a polytetrafluoroethylene friction-reducing layer on its bearing surface, which is used to reduce the friction between the plate and the material support plate at the moment of unloading.

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