A guillotine cutting device

Abstract

The present application relates to the technical field of plate shearing device, and discloses a plate shearing device with flat shearing surface, which comprises a machine table, a lower cutter, an upper cutter, a lifting assembly, a conveying assembly and a pressing assembly. The pressing assembly comprises a lower clamping seat, an upper clamping seat, a guide rod, a sliding block, a first connecting rod, a second connecting rod and a driving member. In use, the conveying assembly conveys the steel plate to the space between the upper cutter and the lower cutter. At this time, the lifting assembly drives the upper cutter to start descending, and the driving member drives the sliding block to move horizontally. The sliding block pulls the upper clamping seat to move downward and the lower clamping seat to move upward through the first connecting rod and the second connecting rod, so that the upper clamping seat and the lower clamping seat move synchronously and oppositely, thereby tightly clamping the plate from the upper and lower sides near the shearing point. The upper cutter continues to descend and cooperates with the lower cutter to complete shearing. Since the plate is constrained by the pressing assembly during shearing, it cannot produce warping, slippage or vibration, so that the shearing surface is flat and smooth.

Description

Technical Field

[0001] This invention relates to the field of shearing device technology, and more particularly to a shearing device with a flat cutting surface. Background Technology

[0002] Shearing devices are commonly used in the metal sheet processing industry, widely applied to the cutting of materials such as steel coils and plates to length. Existing shearing devices typically include a machine base, a lower cutter fixedly mounted on the machine base, a movable upper cutter, and a conveyor assembly for transporting the sheet metal. During operation, the conveyor assembly feeds the sheet metal between the upper and lower cutters. The upper cutter, driven by the lifting assembly, moves downwards and works in conjunction with the lower cutter to complete the shearing process.

[0003] However, in the actual shearing process, since the sheet metal is still in a free state after being conveyed and positioned, especially near the shearing point, the sheet metal lacks effective constraints. When the upper cutter presses down, the sheet metal is prone to upward warping, lateral slippage, or elastic vibration. These unstable movements directly lead to defects such as burrs, tilting, and wavy unevenness on the sheared section, which seriously affect the subsequent processing accuracy and product quality. Summary of the Invention

[0004] The purpose of this invention is to provide a shearing device with a flat cut surface, which solves the problem that the sheet metal is prone to warping, slippage or vibration during shearing in the prior art, resulting in an uneven cut surface.

[0005] To achieve the above objectives, the present invention provides a shearing device for producing a flat cut surface, comprising a machine base, a lower cutter, an upper cutter, a lifting assembly, and a conveying assembly. The lower cutter is fixedly mounted on the machine base, the lifting assembly is disposed on the machine base, the upper cutter is disposed on the lifting assembly, and the conveying assembly is disposed on the machine base. It also includes a pressing assembly. The pressing assembly includes a lower clamping seat, an upper clamping seat, a guide rod, a slider, a first connecting rod, a second connecting rod, and a driving component. The guide rod is fixedly connected to the machine base and disposed on the machine base. The upper clamping seat and the lower clamping seat are both slidably connected to the machine base. The slider is slidably connected to the machine base and located on one side of the machine base. One end of the first connecting rod and the second connecting rod are rotatably connected to the upper clamping seat and the lower clamping seat, respectively, and the other end of the first connecting rod and the second connecting rod are rotatably connected to the slider. The driving component is disposed on the slider and is used to drive the slider to move.

[0006] The slider has a guide protrusion on one side of the slider; the machine base has a dovetail groove on the side of the machine base near the guide protrusion, the dovetail groove cooperates with the guide protrusion, and the guide protrusion extends into the dovetail groove.

[0007] The upper clamping seat includes a housing, a spring, and a seat body. The housing is slidably connected to the guide rod and rotatably connected to the first connecting rod. The seat body is slidably connected to the housing. The two ends of the spring are respectively connected to the housing and the seat body.

[0008] The upper clamping seat also includes a rubber pad, which is fixedly connected to the seat body and located on the side of the seat body away from the spring.

[0009] The upper clamping seat also includes a limiting rod, which is fixedly connected to the outer shell and slidably connected to the seat body, and is located inside the outer shell.

[0010] The lifting assembly includes a guide rod, a blade holder, a mounting base, and a hydraulic cylinder. The guide rod is fixedly connected to the machine base and located on one side of the machine base. The mounting base is fixedly connected to the guide rod and located at the end of the guide rod away from the machine base. The blade holder is slidably connected to the guide rod and is sleeved on the guide rod. The hydraulic cylinder is connected to the mounting base, and the output end of the hydraulic cylinder passes through the mounting base and is connected to the blade holder. The upper cutting blade is fixedly connected to the blade holder.

[0011] A limit plate is also provided above the machine platform, and the limit plate is fixedly connected to the machine platform.

[0012] This invention discloses a shearing device for producing a smooth cut surface. After the conveying assembly delivers the sheet metal between the lower and upper cutters, the lifting assembly drives the upper cutter to descend. Simultaneously, the driving component drives a slider to move horizontally along a dovetail groove. The slider, via a first and second connecting rod, respectively drives the upper clamping seat downwards and the lower clamping seat upwards, causing the upper and lower clamping seats to simultaneously clamp the sheet metal from both sides. The upper cutter continues to descend and cooperates with the lower cutter to complete the shearing. Because the sheet metal is constrained during shearing, it cannot warp, slip, or vibrate, thus obtaining a smooth sheared cut surface. After shearing, the slider moves in the opposite direction, and the upper and lower clamping seats release the sheet metal, completing one work cycle. The beneficial effects of this invention are: by setting up an upper and lower synchronous clamping and pressing assembly linked with the upper cutter, it effectively solves the problem of uneven cut surfaces caused by the lack of constraint on the sheet metal during shearing in the prior art, significantly improving the smoothness of the sheared cut surface and the processing quality. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the overall structure of the shearing device with a flat cutting surface according to the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of the driving component of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure of the first and second connecting rods of the present invention.

[0017] Figure 4 This is a schematic diagram of the installation structure of the spring of the present invention.

[0018] Figure 5 This is a schematic diagram of the mounting structure of the tool holder of the present invention.

[0019] In the diagram: 101-Machine base, 102-Lower cutter, 103-Upper cutter, 104-Lifting assembly, 105-Conveying assembly, 106-Pressure assembly, 107-Lower clamping seat, 108-Upper clamping seat, 109-Guide rod, 110-Slider, 111-First connecting rod, 112-Second connecting rod, 113-Drive component, 114-Guide protrusion, 115-Dovetail groove, 116-Outer shell, 117-Spring, 118-Seat body, 119-Rubber pad, 120-Limiting rod, 201-Guide rod, 202-Cut holder, 203-Mounting seat, 204-Hydraulic cylinder, 205-Limiting plate, 206-Upper conveying roller, 207-Lower conveying roller, 208-Drive rod, 209-First connecting seat, 210-Second connecting seat. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] First embodiment: Please see Figures 1-5 , Figure 1 This is a schematic diagram of the overall structure of the shearing device with a flat cutting surface according to the present invention. Figure 2 This is a schematic diagram of the structure of the driving component of the present invention. Figure 3 This is a schematic diagram of the structure of the first and second connecting rods of the present invention. Figure 4 This is a schematic diagram of the installation structure of the spring of the present invention. Figure 5This is a schematic diagram of the installation structure of the blade holder of the present invention. The present invention provides a shearing device for producing a flat cut surface, including a machine base 101, a lower cutter 102, an upper cutter 103, a lifting assembly 104, a conveying assembly 105, and a pressing assembly 106. The pressing assembly 106 includes a lower clamping seat 107, an upper clamping seat 108, a guide rod 109, a slider 110, a first connecting rod 111, a second connecting rod 112, and a driving component 113. The horizontal movement of the slider 110 drives the upper clamping seat 108 and the lower clamping seat 107 to move synchronously in opposite directions via the first connecting rod 111 and the second connecting rod 112, thereby clamping the sheet metal from both the upper and lower sides. This solves the problem in the prior art where the sheet metal warps, slips, or vibrates due to a lack of effective constraint during shearing, resulting in an uneven cut surface. It is understood that the aforementioned solution can be used in continuous shearing processing of steel coils, and can also be used for shearing other metal sheets and solving the problem of blanking sheet metal parts requiring a high degree of flatness.

[0022] In this specific embodiment, the lower cutter 102 is fixedly mounted on the machine base 101, the lifting assembly 104 is disposed on the machine base 101, the upper cutter 103 is disposed on the lifting assembly 104, and the conveying assembly 105 is disposed on the machine base 101. The upper cutter 103 is disposed above the lower cutter 102. The lifting assembly 104 is used to drive the upper cutter 103 to descend, and the conveying assembly 105 is used to convey the steel coil material along the feeding direction between the lower cutter 102 and the upper cutter 103.

[0023] The guide rod 109 is fixedly connected to the machine base 101 and is disposed on the machine base 101. The upper clamping seat 108 and the lower clamping seat 107 are both slidably connected to the machine base 101. The slider 110 is slidably connected to the machine base 101 and is located on one side of the machine base 101. One end of the first connecting rod 111 and the second connecting rod 112 are rotatably connected to the upper clamping seat 108 and the lower clamping seat 107, respectively. The other end of the first connecting rod 111 and the second connecting rod 112 are both connected to the slider 110. The drive component 113 is rotatably connected to the slider 110 and is used to drive the slider 110 to move. There are two guide rods 109, which are located on the left and right sides of the machine base 101 respectively. The lower clamping seat 107 and the upper clamping seat 108 can slide vertically up and down along the guide rods 109. There are two sliders 110, and two first connecting rods and two second connecting rods are also provided. The sliders 110 are horizontally slidably disposed on the side of the machine base 101 and can slide in the horizontal direction.

[0024] In use, the conveying assembly 105 conveys the steel coil forward at a set length, so that the part to be cut is exactly between the upper cutter 103 and the lower cutter 102. At this time, the lifting assembly 104 drives the upper cutter 103 to begin to descend, and at the same time, the driving component 113 drives the slider 110 to move horizontally. The slider 110 pulls the upper clamping seat 108 downward and the lower clamping seat 107 upward through the first connecting rod 111 and the second connecting rod 112 respectively, so that the upper clamping seat 108 and the lower clamping seat 107 move synchronously towards each other, thereby firmly clamping the sheet metal from the upper and lower sides near the cutting point. The upper cutter 103 continues to descend and moves towards the lower cutter 102. The cutting blade 102 completes the shearing process. Since the sheet metal is constrained by the pressing assembly 106 during shearing, it cannot warp, slip, or vibrate, resulting in a smooth and flat cut surface. After shearing, the lifting assembly 104 drives the upper cutting blade 103 to rise and reset, the driving component 113 drives the slider 110 to move in the opposite direction, the upper clamping seat 108 rises, and the lower clamping seat 107 descends to release the sheet metal. This invention, by setting up an upper and lower synchronous clamping pressing assembly 106 that is linked to the descent of the upper cutting blade 103, fixes the sheet metal from both sides during shearing, eliminating the uneven cut surface defects caused by sheet metal warping, displacement, or vibration, and improving the flatness and processing quality of the sheared cut surface.

[0025] Secondly, the slider 110 has a guide protrusion 114, which is disposed on one side of the slider 110; the machine base 101 has a dovetail groove 115, which is disposed on the side of the machine base 101 near the guide protrusion 114. The dovetail groove 115 cooperates with the guide protrusion 114, and the guide protrusion 114 extends into the dovetail groove 115. Through the sliding cooperation between the dovetail groove 115 and the guide protrusion 114, the horizontal movement of the slider 110 is guided, while the vertical and lateral displacement of the slider 110 is restricted, ensuring that the slider 110 moves smoothly and without sway, thereby ensuring the accuracy of the synchronous movement of the upper clamping seat 108 and the lower clamping seat 107.

[0026] Meanwhile, the upper clamping seat 108 includes a housing 116, a spring 117, and a seat 118. The housing 116 is slidably connected to the guide rod 109 and rotatably connected to the first connecting rod 111. The seat 118 is slidably connected to the housing 116. The two ends of the spring 117 are respectively connected to the housing 116 and the seat 118. When the upper clamping seat 108 descends to the point where the seat 118 contacts the sheet metal, the housing 116 continues to compress the spring 117 downwards, so that the seat 118 presses the sheet metal with elastic force, avoiding damage to the sheet metal surface caused by rigid impact, and adapting to the slight fluctuations in the sheet metal thickness to ensure uniform and stable clamping force. The structure of the lower clamping seat 107 is the same as that of the upper clamping seat 108, and will not be described in detail here.

[0027] In addition, the upper clamping seat 108 also includes a rubber pad 119, which is fixedly connected to the seat body 118 and located on the side of the seat body 118 away from the spring 117. The rubber pad 119 is in direct contact with the upper surface of the sheet material, which increases the friction during clamping and prevents the sheet material from sliding horizontally during shearing. On the other hand, it plays a buffering and protective role, preventing the seat body 118 from scratching the surface of the sheet material.

[0028] Finally, the upper clamping seat 108 also includes a limiting rod 120, which is fixedly connected to the outer shell 116 and slidably connected to the seat body 118, and is located inside the outer shell 116; the limiting rod 120 guides the extension and retraction movement of the seat body 118 to prevent the seat body 118 from deflecting or tilting, and the lower end of the limiting rod 120 is provided with a stop to limit the maximum downward extension stroke of the seat body 118.

[0029] Second embodiment: Based on the first embodiment, please refer to Figures 1-5 The lifting assembly 104 in this embodiment includes a guide rod 201, a knife holder 202, a mounting base 203, and a hydraulic cylinder 204.

[0030] In this specific embodiment, the guide rod 201 is fixedly connected to the machine base 101 and located on one side of the machine base 101; the mounting base 203 is fixedly connected to the guide rod 201 and located at the end of the guide rod 201 away from the machine base 101; the blade holder 202 is slidably connected to the guide rod 201 and sleeved on the guide rod 201; the hydraulic cylinder 204 is connected to the mounting base 203, and the output end of the hydraulic cylinder 204 passes through the mounting base 203 and is connected to the blade holder 202; the upper cutting blade 103 is fixedly connected to the blade holder 202; the guide rod 201 provides vertical guidance for the blade holder 202, ensuring that the upper cutting blade 103 rises and falls smoothly and is accurately aligned; the hydraulic cylinder 204 drives the blade holder 202 to rise and fall, thereby driving the upper cutting blade 103 to rise and fall.

[0031] The machine platform 101 is provided with a limiting plate 205 above it, and the limiting plate 205 is fixedly connected to the machine platform 101. There are two limiting plates 205, which are located on the left and right sides of the machine platform 101. The two limiting plates 205 limit the sheet material from the left and right sides respectively to prevent the sheet material from shifting laterally during the conveying and shearing process.

[0032] Secondly, the conveying assembly 105 includes an upper conveying roller 206 and a lower conveying roller 207. The upper conveying roller 206 is rotatably connected to the limiting plate 205; the lower conveying roller 207 is rotatably connected to the machine base 101. The upper conveying roller 206 and the lower conveying roller 207 are located between the two limiting plates 205. A rotary motor is also installed on the limiting plate 205, and the output end of the rotary motor is connected to the upper conveying roller 206. The upper conveying roller 206 and the lower conveying roller 207 are positioned opposite each other and clamp the sheet material together. The rotary motor drives the upper conveying roller 206 to rotate, and the sheet material is conveyed forward by friction. The lower conveying roller 207 rotates as a driven roller to realize the feeding of the sheet material.

[0033] Meanwhile, the driving component 113 includes a driving rod 208, a first connecting seat 209, and a second connecting seat 210. The first connecting seat 209 is fixedly connected to the blade holder 202; the second connecting seat 210 is fixedly connected to the slider 110; both ends of the driving rod 208 are rotatably connected to the first connecting seat 209 and the second connecting seat 210, respectively. When the upper cutting blade 103 descends with the blade holder 202, the first connecting seat 209 descends synchronously, thereby driving one end of the driving rod 208 to descend. The driving rod 208 pushes the second connecting seat 210 and the slider 110 to move horizontally, thereby driving the pressing assembly 106 to move, realizing pressing and shearing motion. The mechanical linkage eliminates the need for an additional power source and control unit. Simultaneously, due to the linkage effect of the drive rod 208, when the upper cutter 103 descends with the cutter holder 202, the upper clamping seat 108 and the lower clamping seat 107 contact the sheet metal before the upper cutter 103, and clamp the sheet metal under the action of the spring 117. As the upper cutter 103 continues to descend and perform shearing, the outer shell 116 of the upper clamping seat 108 further compresses the spring 117, and the seat body 118 remains in contact with the sheet metal, avoiding excessive pressure or motion interference on the sheet metal caused by the upper clamping seat 108 and the lower clamping seat 107 due to the continued descent of the upper cutter 103.

[0034] The flat-cutting shearing device of the present invention, during operation, drives the slider 110 to move horizontally via the drive component 113. The first connecting rod 111 and the second connecting rod 112 drive the upper clamping seat 108 and the lower clamping seat 107 to move synchronously towards each other. Before the upper cutter 103 cuts, the sheet material is elastically clamped first. Then the upper cutter 103 continues to descend to complete the cutting. Since the sheet material is stably constrained by the upper and lower sides during cutting, warping, slippage and vibration are effectively eliminated, thereby obtaining a flat shearing section and ensuring smooth cutting action and high flatness of the cut surface.

[0035] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A shearing device for producing a flat cut surface, comprising a machine base, a lower cutter, an upper cutter, a lifting assembly, and a conveying assembly, wherein the lower cutter is fixedly mounted on the machine base, the lifting assembly is disposed on the machine base, the upper cutter is disposed on the lifting assembly, and the conveying assembly is disposed on the machine base, characterized in that, It also includes a pressing assembly; The pressing assembly includes a lower clamping seat, an upper clamping seat, a guide rod, a slider, a first connecting rod, a second connecting rod, and a driving component. The guide rod is fixedly connected to the machine base and is disposed on the machine base. The upper clamping seat and the lower clamping seat are both slidably connected to the machine base. The slider is slidably connected to the machine base and is located on one side of the machine base. One end of the first connecting rod and the second connecting rod are rotatably connected to the upper clamping seat and the lower clamping seat, respectively. The other end of the first connecting rod and the second connecting rod are rotatably connected to the slider. The driving component is disposed on the slider and is used to drive the slider to move.

2. The shearing device with a smooth cutting surface as described in claim 1, characterized in that, The slider has a guide protrusion, which is disposed on one side of the slider; the machine base has a dovetail groove, which is disposed on the side of the machine base near the guide protrusion, the dovetail groove cooperates with the guide protrusion, and the guide protrusion extends into the dovetail groove.

3. The shearing device with a smooth cutting surface as described in claim 1, characterized in that, The upper clamping seat includes a housing, a spring, and a seat body. The housing is slidably connected to the guide rod and rotatably connected to the first connecting rod. The seat body is slidably connected to the housing. The two ends of the spring are respectively connected to the housing and the seat body.

4. The shearing device with a smooth cutting surface as described in claim 3, characterized in that, The upper clamping seat also includes a rubber pad, which is fixedly connected to the seat body and located on the side of the seat body away from the spring.

5. The shearing device with a smooth cutting surface as described in claim 3, characterized in that, The upper clamping seat also includes a limiting rod, which is fixedly connected to the outer shell and slidably connected to the seat body, and is located inside the outer shell.

6. The shearing device with a smooth cutting surface as described in claim 1, characterized in that, The lifting assembly includes a guide rod, a blade holder, a mounting base, and a hydraulic cylinder. The guide rod is fixedly connected to the machine base and located on one side of the machine base. The mounting base is fixedly connected to the guide rod and located at the end of the guide rod away from the machine base. The blade holder is slidably connected to the guide rod and sleeved on the guide rod. The hydraulic cylinder is connected to the mounting base, and the output end of the hydraulic cylinder passes through the mounting base and is connected to the blade holder. The upper cutting blade is fixedly connected to the blade holder.

7. The shearing device with a smooth cutting surface as described in claim 1, characterized in that, A limit plate is also provided above the machine platform, and the limit plate is fixedly connected to the machine platform.

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