Pedal type thin plate shearing machine

Abstract

The utility model relates to a pedal type sheet shearing machine in the field of metal processing devices, which is characterized in that a lower knife rest is arranged on a rack, a lower blade is arranged on the lower knife rest, an upper knife rest is arranged above the lower knife rest, an upper blade is arranged on the upper knife rest, and two ends of the upper knife rest are arranged in a sliding seat in a matching way; the lower portion of the upper knife rest is connected with a pedal driving mechanism capable of driving the upper knife rest to move up and down, adjusting seats are fixed to the two sides of the machine frame respectively, guide rails are horizontally arranged in the adjusting seats, the axes of the guide rails are perpendicular to the installation face of the lower knife edge, and the lower knife rest is installed on the guide rails in a sliding mode. An adjusting screw is arranged in the nut in a meshed mode, the adjusting screw is rotatably installed on the adjusting base, and the axis of the adjusting screw is parallel to the axis of the guide rail. Through the transverse adjustable design of the lower cutting edge, the shearing requirements of thin plates with different thicknesses are met, and the upper cutting edge and the lower cutting edge are prevented from being meshed. The device can be suitable for sample manufacturing of packaging cans.

Description

Technical Field

[0001] This utility model relates to a metal processing device, and more particularly to a simple thin plate shearing machine. Background Technology

[0002] Current packaging can manufacturing typically involves shearing thin rolled sheets into rectangular plates, printing on the plates, rolling them into a circle, welding the seams, installing the bottom cover, filling in the materials, and then sealing the top cover. Large-scale industrial production obviously uses automated production equipment for shearing. However, many manufacturers often require can manufacturers to produce samples during the design and quotation process. These samples are often very diverse in specifications and types. Therefore, the need for simple shearing machines to provide flexible sample processing has become a standard requirement.

[0003] In the prior art, there is a foot-operated shearing machine for printed circuit boards, with publication number CN213244516U and publication date of 20210518. This device includes a table, support legs, a fixed crossbar, a rotating plate, a foot pedal, a rubber vertical bar, and a shearing device. Support legs are welded to the four corners of the bottom surface of the table, and a fixed crossbar is welded between the two inner support legs. A rotating plate is threaded through the left and right sides of the fixed crossbar. When cutting the circuit board, lifting the handle moves the second through bar upwards, causing it to move the rubber plate upwards. The second connecting spring is stretched. The circuit board to be cut is then placed under the rubber plate and pushed inwards, so that the cutting point of the circuit board is at the bottom of the cutting blade. Releasing the handle causes the rubber plate to move downwards under the rebound force of the second connecting spring, thus fixing the circuit board to be cut.

[0004] In the prior art, a foot-operated shearing machine for machining is also disclosed, with publication number CN208644206U and publication date: 20190326. This device includes a frame, on which a fixed lower blade holder is mounted, and a lower blade is mounted on the lower blade holder. An upper blade holder is arranged above the lower blade holder, and an upper blade is mounted on the upper blade holder. Lugs are respectively provided on both sides of the upper blade holder. The lower part of the lugs on both sides is connected to a foot pedal through a connecting rod. The upper part of the lugs on both sides is connected to a crossbeam arranged above the frame through a return spring. Armatures are provided on both sides of the upper blade holder, and electromagnets are provided on both sides of the lower blade holder corresponding to the positions of the armatures. The electromagnets are connected to a power source through a variable resistor.

[0005] The prior art has the following disadvantages: when the plate shearing machine shears the plate, the upper blade and the lower blade are gradually engaged to form a shearing gap as the upper blade descends, which puts forward higher requirements for the machining precision and the installation precision of the upper blade and the lower blade, and the upper blade and the lower blade are easily engaged together due to insufficient installation precision after shearing, so that the upper blade and the lower blade are difficult to separate. Content of the utility model

[0006] The utility model discloses a foot -operated thin plate shearing machine, through lower blade transverse position adjustable design, reduce installation precision requirement to avoid shearing after blade engagement problem, improve processing flexibility simultaneously.

[0007] The utility model discloses a foot -operated thin plate shearing machine, through lower blade transverse position adjustable design, reduce installation precision requirement to avoid shearing after blade engagement problem, improve processing flexibility simultaneously.

[0008] The utility model discloses a foot -operated thin plate shearing machine, through lower blade transverse position adjustable design, reduce installation precision requirement to avoid shearing after blade engagement problem, improve processing flexibility simultaneously.

[0009] The further improvement of the utility model lies in that a stepped diameter reducing section is arranged on the adjusting screw, two semicircular annular clamping blocks are arranged in the diameter reducing section, the inner diameter of the clamping block matches the diameter reducing section, the outer diameter of the clamping block is larger than the outer diameter of the adjusting screw, the clamping block is installed in the gland, the gland is fixed on the adjusting seat, a metal elastic gasket is arranged between the one side of the clamping block and the adjusting seat, and the other side of the clamping block abuts on the inner end face of the gland.

[0010] The further improvement of the utility model lies in that a square adjusting head is arranged on one end of the adjusting screw.

[0011] The further improvement of the utility model lies in that the metal elastic gasket is arranged in a wave shape.

[0012] The further improvement of the utility model lies in that an oiling nozzle is arranged on the side of the gland, and the oiling nozzle connects the cavity in which the clamping block and the metal elastic gasket are arranged.

[0013] The further improvement of the utility model lies in that a sliding groove is arranged on the sliding seat, and rectangular protrusions are arranged at the two ends of the upper knife holder and matched in the sliding groove.

[0014] The further improvement of the utility model lies in that the foot driving mechanism comprises a foot pedal hinged at one end to a frame, lifting rods are respectively fixedly connected to the lower sides of the two ends of the upper knife holder, the lower end of the lifting rod is hinged to the upper end of a connecting rod, the lower end of the connecting rod is hinged to the foot pedal, a tension spring pulling the foot pedal is further connected to the foot pedal, and a limiting rod limiting the position of the foot pedal is arranged on the frame and located on the upper side of the foot pedal.

[0015] The further improvement of the utility model lies in that a workbench plate is arranged on the frame, and the height of the workbench plate is basically flush with the lower knife holder. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1: Overall structure side view, showing the rack, workbench plate, foot pedal driving mechanism and blade position.

[0017] Figure 2 : Perspective view, showing the overall connection relationship between the slide and the upper knife holder.

[0018] Figure 3 : Partial structure after removing the rack, highlighting the assembly of the adjusting seat, guide rail, lower knife holder and adjusting screw.

[0019] Figure 4 : Figure 3 : Enlarged at A, showing the installation details of the adjusting screw reduced section, clamping block, gland and elastic pad.

[0020] Figure 5 : Perspective exploded view of the clamping block and metal elastic pad.

[0021] In the figure, 1 foot pedal, 2 tension spring, 3 adjusting seat, 4 clamping block, 5 gland, 6 adjusting screw, 7 workbench plate, 8 guide rail, 9 lower knife holder, 10 nut, 11 lower blade, 12 upper blade, 13 upper knife holder, 14 slide, 15 sliding groove, 16 lifting rod, 17 connecting rod, 18 rack, 19 limit rod, 20 metal elastic pad, 21 oil filler. DETAILED DESCRIPTION

[0022] As Figures 1-5 shown, it is a foot pedal type thin plate shearing machine, which comprises a rack 18, a lower knife holder 9 installed on the rack 18, a lower blade 11 installed on the lower knife holder 9, an upper knife holder 13 arranged above the lower knife holder 9, an upper blade 12 installed on the upper knife holder 13, the upper knife holder 13 being cooperatively arranged in a slide 14 at both ends, the slide 14 being fixed on the rack 18, the upper knife holder 13 being connected with a foot pedal driving mechanism which can drive the upper knife holder 13 to move up and down, the rack 18 being fixed with an adjusting seat 3 at both sides, the adjusting seat 3 being horizontally provided with a guide rail 8, the axis of the guide rail 8 being perpendicular to the installation surface of the lower blade 11, the lower knife holder 9 being L-shaped, one arm of the L-shaped lower knife holder 9 being slidably installed on the guide rail 8, the lower blade 11 being installed on the outside of the other arm of the L-shaped lower knife holder 9, the inside of the L-shaped lower knife holder 9 being further fixed with a nut 10, the nut 10 being meshed with an adjusting screw 6, the adjusting screw 6 being rotatably installed on the adjusting seat 3, the axis of the adjusting screw 6 being arranged in parallel with the axis of the guide rail 8.

[0023] The adjusting screw 6 is provided with a stepped reduced diameter section, two semicircular ring-shaped clamping blocks 4 are arranged in the reduced diameter section, the inner diameter of the clamping block 4 matches the reduced diameter section, the outer diameter of the clamping block 4 is larger than the outer diameter of the adjusting screw 6, the clamping block 4 is arranged in the gland 5, the gland 5 is fixed on the adjusting seat 3, a metal elastic pad 20 is arranged between one side of the clamping block 4 and the adjusting seat 3, and the other side of the clamping block 4 abuts against the inner end surface of the gland 5. One end of the adjusting screw 6 is provided with a square adjusting head extending out of the adjusting seat 3. The metal elastic pad 20 is arranged in a wave shape. The side surface of the gland 5 is provided with an oil filler 21, and the oil filler 21 is connected to the cavity in which the clamping block 4 and the metal elastic pad 20 are arranged.

[0024] The sliding seat 14 is provided with a sliding groove 15, and the upper tool holder 13 is provided with rectangular protrusions arranged in the sliding groove 15. The foot pedal driving mechanism comprises a foot pedal 1 hingedly connected to the frame 18, lifting rods 16 fixedly connected to the lower sides of the two ends of the upper tool holder 13, respectively, the lower end of the lifting rod 16 is hingedly connected to the upper end of a connecting rod 17, the lower end of the connecting rod 17 is hingedly connected to the foot pedal 1, the foot pedal 1 is further connected to a tension spring 2 for pulling the foot pedal 1, and the frame 18 is provided with a limiting rod 19 for limiting the position of the foot pedal 1 on the upper side of the foot pedal 1.

[0025] The frame 18 is provided with a workbench plate 7, and the height of the workbench plate 7 is substantially flush with the height of the lower blade 11.

[0026] In operation, the following working states or working processes are provided.

[0027] 1. Initial state: the foot pedal 1 is in a raised position under the action of the tension spring 2, the upper blade 12 is separated from the lower blade 11, and the limiting rod 19 limits the maximum stroke of the foot pedal 1.

[0028] 2. Adjusting the position of the lower blade: rotating the square adjusting head of the adjusting screw 6, driving the lower tool holder 9 to move transversely along the guide rail 8 through the nut 10, adjusting the transverse distance between the lower blade 11 and the upper blade 12, and adapting to the shearing requirements of different thicknesses of plates.

[0029] 3. Adjusting the deformable margin of the lower blade: the gland 5 is fixed on the adjusting seat 3 through bolt connection, the thickness of the clamping block 4 and the metal elastic pad 20 is designed in advance, so that after the gland 5 compresses the metal elastic pad 20, the metal elastic pad 20 still has a certain elastic deformation margin, the margin is preferably 0.2-0.8mm, and the margin can be changed by adding a gasket. The pre-stress loaded on the metal elastic pad 20 should not be too small, and in the process of shearing the plate, it can withstand a large horizontal thrust to ensure that the plate can be smoothly cut, and only when it is subjected to a lateral thrust greater than that generated when the plate is cut, the metal elastic pad 20 can be retracted to ensure that the upper blade 12 and the lower blade 11 will not be locked.

[0030] 4. Shearing operation: the plate is placed on the workbench 7, the surface is flush with the lower blade 11, to ensure the shearing accuracy. Step on the foot pedal 1, push the lifting rod 16 down through the connecting rod 17, drive the upper knife holder 13 to move vertically down along the chute 15, the upper blade 12 engages with the lower blade 11 to complete the shearing.

[0031] 5. Reset: after loosening the foot pedal 1, pull the spring 2 back to reset, the upper blade 12 is lifted, the limiting rod 19 limits the reset limit position, and the next shearing is prepared.

[0032] 6. Maintenance and lubrication: inject lubricating grease into the cavity of the clamping block 4 and the metal elastic pad 20 through the oil nozzle 21 regularly, to reduce the friction resistance of the adjusting screw 6 and the internal wear.

[0033] The utility model is not limited to the above embodiment, on the basis of the technical scheme disclosed by the utility model, the skilled in the art can make some substitutions and deformations to some technical features without creative labor according to the disclosed technical content, and these substitutions and deformations are all within the protection scope of the utility model.

Claims

1. A foot-operated thin plate shearing machine, comprising a frame, a lower blade holder mounted on the frame, a lower blade mounted on the lower blade holder, an upper blade holder mounted above the lower blade holder, an upper blade mounted on the upper blade holder, both ends of the upper blade holder being fitted into a slide block, the slide block being fixed to the frame, and a foot-operated drive mechanism connected to the lower part of the upper blade holder for driving the upper blade holder to move up and down, characterized in that: The adjusting seat is fixed on both sides of the frame, and a guide rail is horizontally arranged in the adjusting seat, and the axis of the guide rail is perpendicular to the installation surface of the lower blade.

2. A foot-operated sheet-metal shearing machine according to claim 1, characterized in that: A stepped reduced diameter section is arranged on the adjusting screw, and two semicircular annular clamping blocks are arranged in the reduced diameter section.

3. A foot-operated sheet-metal shearing machine according to claim 2, characterized in that: The end of the adjusting screw is provided with a square adjusting head which extends out of the adjusting seat.

4. A foot-operated sheet-metal shearing machine according to claim 2, characterized in that: The metal elastic pad is arranged in a wave shape.

5. A foot-operated sheet-metal shearing machine according to claim 2, characterized in that: An oil nozzle is arranged on the side surface of the gland, and the oil nozzle connects the cavity between the clamping block and the metal elastic pad.

6. A foot-operated sheet-metal shearing machine according to any one of claims 1-5, characterized in that: A sliding groove is arranged on the sliding seat, and rectangular protrusions are arranged at both ends of the upper blade and are arranged in the sliding groove.

7. A foot-operated sheet-metal shearing machine according to any one of claims 1-5, characterized in that: The foot pedal driving mechanism comprises a foot pedal which is hingedly connected to the frame, and lifting rods are fixedly connected to the lower side of both ends of the upper blade.

8. A foot-operated sheet-metal shearing machine according to any one of claims 1-5, characterized in that: A workbench is arranged on the frame, and the height of the workbench is substantially flush with the lower blade.

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