A precisely positioned steel plate cutting device

Abstract

The present application relates to the field of steel plate cutting, and particularly relates to a steel plate cutting device with accurate positioning, which comprises a workbench, a plurality of strip-shaped chip removal holes are formed on the upper surface of the workbench, a screw rod is symmetrically arranged on the workbench through a supporting rod, a supporting frame is drivingly connected between the screw rods, a cutting unit is arranged on the supporting frame, and the cutting unit is used for cutting a strip-shaped hole on the steel plate; a touch unit is arranged on the two sides of the workbench, and the touch unit is used for controlling the start and stop of the cutting unit. In the present application, when the supporting frame moves, the ball on the convex part is matched with the conductive spring piece in the notch. At this moment, the position is also the sawing position on the steel plate, and the sawing position can be realized through the accurate matching of the pointer on the limiting block and the scale on the strip-shaped plate. The matching adjustment of the scale and the pointer is easy to operate, and the time and energy consumed in the accuracy can be reduced, so that the efficiency is improved. In addition, the cost of the components of the touch unit is relatively low, and the touch unit can be favored by manufacturers.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of steel plate cutting, and particularly relates to a steel plate cutting device with accurate positioning. BACKGROUND

[0002] The steel plate is sawn by a high-speed rotating saw blade, and the operation technology is very mature. The steel plate can be sawn by a full-automatic equipment, and the full-automatic equipment has the advantages of high precision, high efficiency and high safety. However, the full-automatic equipment also has its own shortcomings. First, the purchase cost is high, and it is difficult for some small manufacturers or small workshops to bear the high cost. Second, the operator needs professional knowledge. The automatic equipment can be operated by relying on its input self-programming. Third, professional personnel need to be hired for later maintenance, which also causes the cost to increase. Therefore, some small manufacturers often use semi-automatic cutting equipment. The semi-automatic cutting equipment often needs manual positioning of the cutting position.

[0003] When producing and processing, the specifications and sizes of some products cannot meet the requirements of customers. Even if the requirements of customers can be met, more effort and time need to be invested in the semi-automatic equipment to adjust the accuracy. In this way, the quality can meet the requirements, but the efficiency and benefits cannot be guaranteed.

[0004] Therefore, the steel plate cutting device with accurate positioning is proposed for the above problems. SUMMARY

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem in the background art.

[0006] The technical scheme adopted by the present application to solve the technical problems is: the steel plate cutting device with accurate positioning comprises a workbench, a plurality of strip-shaped chip removal holes are formed in the upper surface of the workbench, a steel plate to be cut is placed on the upper surface of the workbench, a lead screw is symmetrically arranged on the workbench through a support rod, a support frame is transmissionally connected between the lead screws, a cutting unit is arranged on the support frame, and the cutting unit is used for cutting a strip-shaped hole on the steel plate; a touch unit is arranged on both sides of the workbench, and the touch unit is used for controlling the start and stop of the cutting unit.

[0007] The touch unit comprises a strip-shaped plate fixed on both sides of the workbench and a limiting block mounted on the strip-shaped plate, a scale is arranged on the outer side wall of the strip-shaped plate, and a sliding groove is formed in the upper surface of the strip-shaped plate; the limiting block comprises a sliding part and a conductive part; the sliding part is vertically oriented in a U shape, one side of the sliding part is slidably arranged in the sliding groove, the other side of the sliding part is attached to the outer side wall of the strip-shaped plate, and a pointer is arranged at the lower end of the other side of the sliding part; a notch is formed in the end of the conductive part, the notch faces the cutting unit, and a conductive spring is arranged at the bottom of the notch; a convex part is arranged at the end of the support frame, the convex part is slidably connected in the notch, a spherical body is arranged on the side wall of the convex part, and the spherical body is pressed against the end of the conductive spring.

[0008] Preferably, the cutting unit comprises a cylinder and a cutting motor; the cylinder is arranged at the middle position of the support frame, a connecting rod is fixedly connected to the output end of the cylinder, and the cutting motor is fixedly connected to the end of the connecting rod; the output end of the cutting motor is fixedly connected to a cutting saw blade.

[0009] Preferably, the middle part of the support frame is in a U shape with an opening facing upward, and the cutting motor can move up and down along the U-shaped part of the support frame.

[0010] A rectangular frame is fixedly connected to the lower surface of the shell of the cutting motor, the frame is arranged horizontally on the upper surface of the workbench, a push rod is slidably connected to the corner of the frame, a spring is sleeved around the upper half of the push rod, the upper end of the spring is fixedly connected to the upper end of the push rod, the lower end of the spring is fixedly connected to the upper surface of the frame, and a pressing ball is rotatably connected to the lower end of the push rod and presses against the steel plate to be machined on the workbench.

[0011] Preferably, a plurality of conductive grooves are formed in the surface of the outer side wall of the strip-shaped plate, the conductive grooves are arranged horizontally along the length direction of the strip-shaped plate, and a plurality of conductive strips are arranged on the inner surface of the other side of the sliding part, and the conductive strips are electrically connected to the conductive grooves.

[0012] Preferably, a buzzer and an indicator light are arranged on the limiting block; the indicator light is used to indicate that the convex part has been slid into the notch; and the buzzer is used to warn that the spherical body has been electrically connected to the conductive spring.

[0013] Preferably, a clearance groove is symmetrically formed in the conductive part, the clearance groove is located at the rear side of the notch, the conductive spring is arranged between the clearance grooves, one side of the clearance groove penetrates through the outer side wall of the conductive part, the other side of the clearance groove penetrates into the notch, an L-shaped pressing rod is arranged in the clearance groove, one rod body of the pressing rod is connected to the side wall of the clearance groove close to the notch through a compression spring, the other rod body of the pressing rod extends into the notch along the surface of the conductive spring, and a pressing wheel is rotatably connected to the end of the other rod body of the pressing rod.

[0014] Preferably, an L-shaped groove is formed below the giving way slot, the lower part of the groove penetrates to the inner surface of one side of the sliding part, the upper part of the groove communicates with the giving way slot, and a friction rod is arranged in the groove, the shape of the friction rod is the same as that of the groove, the lower half of the friction rod protrudes from the lower slot of the groove, the upper half of the friction rod extends horizontally to the rear wall of the giving way slot, and the end of the upper half of the friction rod extends upward and is located at the rear side of the rod body of the extrusion rod.

[0015] Preferably, a through hole is formed in the other side of the sliding part, a magnet is arranged in the through hole, the magnet is adsorbed on the outer wall of the strip-shaped plate, and a T-shaped rod is fixedly connected to the end face of the magnet and slidably connected in the through hole.

[0016] Preferably, a placing groove is formed in the inner top surface and the inner bottom surface of the notch, and an electrically-conductive plate is arranged in the placing groove.

[0017] Preferably, an arc-shaped opening is arranged at the end of the conductive part, and an arc-shaped opening is also arranged on the rear wall of the rod body of the extrusion rod.

[0018] The present application has the advantages that:

[0019] 1. The setting of the actuating unit in the present application is matched with the electrically-conductive elastic sheet in the notch through the ball on the convex part when the support frame moves, and the position is the position to be sawed on the steel plate, and the sawing position can be realized through the accurate matching of the pointer on the limiting block and the scale on the strip-shaped plate. The matching and adjustment of the scale and the pointer are easy to operate, and the time and effort consumed in accuracy can be reduced, thereby improving the efficiency, and the investment cost of the parts of the actuating unit is also low, which can be favored by manufacturers.

[0020] 2. The sliding part is installed in the sliding groove, the electrically-conductive strip is connected with the electrically-conductive groove, and the power supply is turned on, and the cooperation of the electrically-conductive strip and the electrically-conductive groove makes the device more indirect and reduces the influence of foreign matters on the device. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of the steel plate cutting device in embodiment one.

[0022] Figure 2 It is a perspective view of the steel plate cutting device in embodiment one. Figure 1 It is a partial enlarged view of A in embodiment one.

[0023] Figure 3 It is a side view of the steel plate cutting device in embodiment one.

[0024] Figure 4 It is a side view of the steel plate cutting device in embodiment one. Figure 3 It is a partial enlarged view of B in embodiment one.

[0025] Figure 5A plan view of the steel plate cutting device in Example 1;

[0026] Figure 6 A front view of the steel plate cutting device in Example 1;

[0027] Figure 7 A broken perspective view of the support frame and the convex part in Example 1;

[0028] Figure 8 A first perspective view of the limiting block in Example 1;

[0029] Figure 9 A second perspective view of the limiting block in Example 1;

[0030] Figure 10 A third perspective view of the limiting block in Example 1;

[0031] Figure 11 A sectional perspective view of the limiting block in Example 1;

[0032] Figure 12 A sectional view of the limiting block in Example 1.

[0033] In the figure: 1, workbench; 2, steel plate; 3, lead screw; 4, support frame; 5, strip-shaped plate; 51, limiting block; 6, scale; 7, sliding groove; 8, sliding joint; 9, conductive part; 10, pointer; 11, notch; 12, conductive spring; 13, convex part; 14, ball; 15, air cylinder; 16, cutting motor; 17, frame; 18, push rod; 19, extrusion ball; 20, conductive groove; 21, conductive strip; 22, buzzer; 23, indicator light; 24, accommodation groove; 25, extrusion rod; 26, compression spring; 27, extrusion wheel; 28, groove; 29, friction rod; 30, magnet; 31, T-shaped rod; 32, power connection plate; 33, arc-shaped opening. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in combination with specific embodiments.

[0035] Example 1: Refer to Figures 1-8 A steel plate cutting device with precise positioning, comprising a workbench 1, a plurality of strip-shaped chip removal holes are formed on the upper surface of the workbench 1, a steel plate 2 to be cut is placed on the upper surface of the workbench 1, lead screws 3 are symmetrically arranged on the workbench 1 through support rods, a support frame 4 is drivingly connected between the lead screws 3, a cutting unit is arranged on the support frame 4, and the cutting unit is used to cut strip-shaped holes on the steel plate 2; a touch unit is arranged on both sides of the workbench 1, and the touch unit is used to control the start and stop of the cutting unit;

[0036] The touch unit includes a strip-shaped plate 5 fixed on both sides of the workbench 1 and a limiting block 51 installed on the strip-shaped plate 5, the outer side wall of the strip-shaped plate 5 is provided with a scale 6, and the upper surface of the strip-shaped plate 5 is provided with a sliding groove 7; the limiting block 51 includes a sliding part 8 and a conductive part 9; the sliding part 8 is vertically oriented in a U shape, one side of the sliding part 8 slides in the sliding groove 7, the other side of the sliding part 8 is attached to the outer side wall of the strip-shaped plate 5, and the lower end of the other side of the sliding part 8 is provided with a pointer 10; the end of the conductive part 9 is provided with a notch 11, the notch 11 faces the cutting unit, and the inner bottom of the notch 11 is provided with a conductive spring 12; the end of the support frame 4 is provided with a convex part 13, the convex part 13 is slidingly connected in the notch 11, the side wall of the convex part 13 is provided with a ball 14, and the ball 14 is extruded on the end of the conductive spring 12;

[0037] Referring to Figure 1 , Figure 3 and Figure 6 , the cutting unit includes a gas cylinder 15 and a cutting motor 16; the gas cylinder 15 is arranged in the middle of the support frame 4, the output end of the gas cylinder 15 is fixedly connected with a connecting rod, the end of the connecting rod is fixedly connected with the cutting motor 16, and the output end of the cutting motor 16 is fixedly connected with a cutting saw blade;

[0038] Whether the cutting motor 16 can be executed is determined by the touch unit; the end of the lead screw 3 is provided with a synchronous pulley, the synchronous pulley is connected with the upper synchronous pulley of the hand crank through a belt, the hand crank is rotated, and the lead screw 3 can be driven to drive the support frame 4 to move; first, the steel plate 2 to be machined is placed on the surface of the workbench 1, then the touch unit is installed, the two ends of the strip-shaped plate 5 are fixed on both sides of the workbench 1 through bolts, then the limiting block 51 is installed, the sliding part 8 is slid into the strip-shaped plate 5 from one side of the sliding groove 7, a plurality of limiting blocks 51 can be installed on the strip-shaped plate 5 according to requirements, then the distance between the adjacent limiting blocks 51 is adjusted through the pointer 10 cooperating with the scale 6, and the spacing of the limiting blocks 51 can be accurately adjusted, so that the subsequent accurate position cutting of the steel plate 2 is prepared;

[0039] The hand crank is controlled to move the support frame 4, the support frame 4 drives the gas cylinder 15 and the cutting motor 16 to move, when the convex parts 13 on both sides of the support frame 4 move into the notches 11, the ball 14 is close to the conductive spring 12, then the surface of the ball 14 is extruded on the conductive spring 12, at this time, the ball 14 and the conductive spring 12 are electrically connected, the power supply of the cutting motor 16 is turned on, the cutting motor 16 drives the cutting saw blade to rotate at high speed, then the gas cylinder 15 drives the cutting motor 16 to push down, and the cutting saw blade accurately cuts on the steel plate 2;

[0040] The setting of the touch unit, when the support frame 4 moves, the cooperation of the ball 14 on the convex part 13 and the conductive spring piece 12 in the notch 11, at this moment the position is also the position that needs to be sawn on the steel plate 2, and the sawing position can be realized through the accurate cooperation of the pointer 10 on the limiting block 51 and the scale 6 on the strip-shaped plate 5, the cooperation and adjustment of the scale 6 and the pointer 10 are easy to operate, and the time and effort consumed in accuracy can be reduced, thereby improving the efficiency, and the investment cost of the parts of the touch unit is also low, which can be favored by manufacturers.

[0041] Referring to Figure 3 , the support frame 4 is in the shape of U with the opening upward, and the cutting motor 16 can move up and down along the U-shaped part of the support frame 4;

[0042] The lower surface of the shell of the cutting motor 16 is fixedly connected with a rectangular frame 17, the frame 17 is horizontally arranged on the upper surface of the workbench 1, a push rod 18 is slidingly connected to the corner position of the frame 17, a spring is sleeved on the outer circle of the upper half part of the push rod 18, the upper end of the spring is fixedly connected to the upper end of the push rod 18, the lower end of the spring is fixedly connected to the upper surface of the frame 17, and a pressing ball 19 is rotationally connected to the lower end of the push rod 18 and presses on the steel plate 2 to be processed on the workbench 1; after the ball 14 and the conductive spring piece 12 are electrically connected, the cutting motor 16 starts to drive, at this moment, the cutting saw blade rotates at high speed and transmits the vibration to the steel plate 2 to be processed on the workbench 1, so that the steel plate 2 moves on the workbench 1, and the cutting is not accurate enough, therefore, the frame 17 is arranged to cooperate with the push rod 18, the push rod 18 pre-presses the steel plate 2 through the spring, and the steel plate 2 is stabilized, at the same time, the middle part of the support frame 4 is arranged in the shape of U, the cutting motor 16 moves towards the steel plate 2, and the support frame 4 does not hinder the cutting motor 16, the cutting motor 16 pushes down the frame 17, the frame 17 drives the push rod 18 to move, the upper end of the push rod 18 presses the spring downwards, the downward pressing force of the push rod 18 on the steel plate 2 is increased, the stability of the steel plate 2 on the workbench 1 is improved, and the pressing ball 19 is arranged, when the steel plate 2 is placed, the edge of the steel plate 2 presses the pressing ball 19, so that the push rod 18 is pushed upwards, and the steel plate 2 is smoothly placed, and the feeding of the steel plate 2 is not affected, at the same time, when the support frame 4 moves above the steel plate 2, the pressing ball 19 presses on the steel plate 2, and the smooth sliding between the push rod 18 and the steel plate 2 can also be ensured, and the feeding of the processed steel plate 2 is also not affected, and the steel plate 2 can be directly taken away.

[0043] Referring to Figure 3 , Figure 4 , Figure 9 and Figure 10The outer side wall surface of the strip-shaped plate 5 is provided with a plurality of conductive grooves 20, which are horizontally arranged along the length direction of the strip-shaped plate 5. The other side inner surface of the sliding joint 8 is provided with a plurality of conductive strips 21, which are electrically connected with the conductive grooves 20. The conductive spring piece 12 needs external power supply, which is generally connected by wires. If a plurality of limiting blocks 51 are arranged on the strip-shaped plate 5, a plurality of wires are needed, which are messy and can affect the processing. Therefore, the conductive grooves 20 are arranged on the strip-shaped plate 5. When the sliding joint 8 is installed in the sliding groove 7, the conductive strips 21 are connected with the conductive grooves 20, so that the power supply is turned on. The cooperation between the conductive strips 21 and the conductive grooves 20 makes the device more indirect and reduces the influence of foreign matters on the device.

[0044] With reference to Figure 8 , Figure 9 and Figure 10 , the limiting block 51 is provided with a buzzer 22 and an indicator light 23. The indicator light 23 is used to indicate that the convex part 13 has been slid into the notch 11. The buzzer 22 is used to warn that the ball 14 has been electrically connected with the conductive spring piece 12. When operating the device, the operator rotates the hand crank while observing whether the indicator light 23 flickers. When the convex part 13 has not been slid into the notch 11, all the indicator lights 23 are in an off state, and the buzzer 22 is also in a power-off state. When the convex part 13 is just slid into the notch 11, the power supply of the indicator light 23 is turned on, the power supply is turned on through the electrical contact between the convex part 13 and the concave part, and the indicator light 23 flickers. At this time, the operator is warned to slow down the rotation speed of the hand crank for fine adjustment. When the ball 14 contacts the conductive spring piece 12, the power supply of the buzzer 22 is also turned on, the buzzer 22 emits a sound to warn the operator that the position of the cutting saw blade is adjusted in place. At this time, the ball 14 also turns on the power supply of the cutting motor 16. The arrangement of the buzzer 22 and the indicator light 23 enables the operator to accurately judge the position adjustment state and accurately control the rotation speed of the hand crank, which can save time and improve efficiency.

[0045] With reference to Figure 10 , Figure 11 and Figure 12, the conductive part 9 inside is also symmetrically provided with a clearance slot 24, the clearance slot 24 is located at the rear side of the notch 11, the clearance slot 24 is provided with a conductive elastic sheet 12 between the clearance slot 24, the clearance slot 24 is penetrated to the outer side wall of the conductive part 9 on one side, the other side of the clearance slot 24 is penetrated into the notch 11, the clearance slot 24 is provided with an L-shaped extrusion rod 25, one rod body of the extrusion rod 25 is connected to the side wall of the clearance slot 24 close to the recess by a compression spring 26, the other rod body of the extrusion rod 25 extends to the notch 11 along the surface of the conductive elastic sheet 12, and the other rod body of the extrusion rod 25 is rotatably connected with an extrusion wheel 27; the conductive elastic sheet 12 itself has elasticity, after being extruded by the ball 14 for many times, the conductive elastic sheet 12 will be slightly deformed, which will cause the cutting saw blade adjustment to be not accurate enough, therefore it is necessary to maintain or replace the conductive elastic sheet 12, the replacement needs to be disassembled and installed, and the replacement cost of the conductive elastic sheet 12 needs to be considered, therefore the conductive elastic sheet 12 is selected to be maintained, when the limiting block 51 is not used, the operator presses the end face of the conductive part 9 with the thumb, extrudes one rod body of the extrusion rod 25 with the index finger, and then extrudes the extrusion rod 25 with force, the extrusion rod 25 extrudes the extrusion wheel 27 to the end part direction of the conductive elastic sheet 12, the extrusion plate extrudes the deformed part of the end part of the conductive elastic sheet 12 straight, so that the initial state is restored, and the cutting accuracy in the later use is ensured.

[0046] Referring to Figure 10 , Figure 11 and Figure 12 , the clearance slot 24 is provided with an L-shaped groove 28 below, the groove 28 is penetrated to the inner surface of one side of the sliding part 8 below, the groove 28 is communicated with the clearance slot 24 above, and the groove 28 is provided with a friction rod 29, the shape of the friction rod 29 is the same as that of the groove 28, the lower half part of the friction rod 29 protrudes from the lower slot of the groove 28, the upper half part of the friction rod 29 extends to the rear wall of the clearance slot 24 horizontally, and the end part of the upper half part of the friction rod 29 extends upward and is located at the rear side of one rod body of the extrusion rod 25; when one side of the sliding part 8 is slid into one side of the sliding groove 7, the surface of the friction rod 29 extrudes the surface of the sliding groove 7, so that the friction rod 29 has a tendency to move to the middle direction of the workbench 1, and the vertical part of the upper half part of the friction rod 29 extrudes one rod body of the extrusion rod 25, and one rod of the extrusion rod 25 is connected to the clearance slot 24 by the compression spring 26, so that the extrusion rod 25 extrudes the friction rod 29 backward, so that the lower half part of the friction rod 29 extrudes the inner side wall of the sliding groove 7, thereby improving the stability between the limiting block 51 and the strip-shaped plate 5, so as to resist the vibration force generated when the cutting motor 16 rotates.

[0047] Referring to Figure 12The other side of the sliding joint 8 is provided with a through hole, and a magnet 30 is arranged in the through hole. The magnet 30 is adsorbed on the outer side wall of the strip-shaped plate 5. The end surface of the magnet 30 is fixedly connected with a T-shaped rod 31 which is slidingly connected in the through hole. The magnet 30 is arranged. The limiting block 51 is adsorbed on the strip-shaped plate 5 through the magnet 30. The strip-shaped plate 5 is made of iron. Considering that the conductive strip 21 cooperates with the conductive groove 20, the strip-shaped plate 5 is insulated. The strip-shaped plate 5 does not affect the transmission of electricity and the adsorption of the magnet 30 on the strip-shaped plate 5. The adsorption and fixation of the magnet 30 and the strip-shaped plate 5 are controlled through the T-shaped rod 31. Therefore, the further stability between the limiting block 51 and the strip-shaped plate 5 is realized.

[0048] With reference to Figure 10 , Figure 11 and Figure 12 , the inner top surface and the inner bottom surface of the notch 11 are provided with a placing groove. An electrically connected plate 32 is arranged in the placing groove. The lower surface of the electrically connected plate 32 is connected to the placing groove through an arc-shaped elastic plate. The thickness of the convex part 13 is less than the interval between the upper and lower inner surfaces of the notch 11. The purpose is to prevent the convex part 13 from hitting the conductive part 9, which will cause the convex part 13 to fail to be in electrical contact with the notch 11. Therefore, the electrically connected plate 32 is arranged. The electrically connected plate 32 is connected to the placing groove through the elastic plate. The electrically connected plate 32 moves up and down. When the convex part 13 moves into the notch 11, the convex part 13 presses the edge of the electrically connected plate 32. Then the electrically connected plate 32 is pressed into the placing groove. The outer top of the elastic plate is in contact with the electrically connected plate 32. The electrical contact between the electrically connected plate 32 and the convex part 13 is ensured.

[0049] In example two, with reference to Figure 8 and Figure 11 Figure 12 Figure 8 Figure 11 Figure 12 Figure 8 Figure 11 Figure 12 Figure 8 Figure 11 Figure 12 Figure 8 Figure 11 Figure 12 Figure 8 Figure 11 Figure 12 Figure 8 Figure 11 Figure 12 Figure 8 Figure , compared with example one, as another embodiment of the application, the end of the conductive part 9 is provided with an arc-shaped opening 33. The rear side wall of the rod body of the pressing rod 25 is also provided with an arc-shaped opening 33. Through the arrangement of the arc-shaped opening 33, the fingers of the operator can be stably placed on the conductive part 9 and the pressing rod 25, so as to prevent the fingers from being separated during the pressing, thereby avoiding the problem of scratching.

[0050] Working principle: whether the cutting motor 16 can execute is determined by the touch unit; the end of the lead screw 3 is provided with a synchronous belt pulley. The synchronous belt pulley is connected to the upper synchronous belt pulley of the hand crank through a belt transmission. The hand crank is rotated and can drive the lead screw 3 to drive the support frame 4 to move. First, the steel plate 2 to be processed is placed on the surface of the workbench 1. Then the touch unit is installed. The two ends of the strip-shaped plate 5 are fixed on the two sides of the workbench 1 through bolts. Then the limiting block 51 is installed. The sliding joint 8 is slid from one side of the sliding groove 7 to the strip-shaped plate 5. According to the requirements, a plurality of limiting blocks 51 can be installed on the strip-shaped plate 5. Then the distance between the adjacent limiting blocks 51 is adjusted through the pointer 10 cooperating with the scale 6. The spacing of the limiting blocks 51 can be accurately adjusted, which prepares for the accurate position cutting of the steel plate 2.

[0051] The hand crank controls the movement of the support frame 4, which drives the cylinder 15 and the cutting motor 16 to move. When the convex part 13 on both sides of the support frame 4 moves into the notch 11, the ball 14 is close to the conductive spring 12. Then the surface of the ball 14 is pressed on the conductive spring 12. At this time, the ball 14 and the conductive spring 12 are electrically connected. The power supply of the cutting motor 16 is turned on. The cutting motor 16 drives the cutting saw blade to rotate at high speed. Then the cutting motor 16 drives the cylinder 15 to push down the cutting motor 16. The cutting saw blade accurately cuts the steel plate 2;

[0052] The setting of the touch unit makes the ball 14 on the convex part 13 match the conductive spring 12 in the notch 11 when the support frame 4 moves. At this moment, the position is the position that needs to be cut on the steel plate 2. The cutting position can be accurately realized by the precise matching of the pointer 10 on the limiting block 51 and the scale 6 on the strip plate 5. The matching and adjustment of the scale 6 and the pointer 10 are easy to operate, and can reduce the time and effort spent on accuracy, thereby improving efficiency. The cost of the components of the touch unit is also relatively low, which can be favored by manufacturers.

[0053] After the ball 14 and the conductive spring 12 are electrically connected, the cutting motor 16 starts to drive. At this time, the cutting saw blade rotates at high speed, which will transmit the vibration to the steel plate 2 on the workbench 1 to be processed, causing the steel plate 2 to move on the workbench 1, which is not accurate enough. Therefore, the frame 17 is set to cooperate with the push rod 18. The push rod 18 pre-presses the steel plate 2 through the spring to stabilize the steel plate 2. At the same time, the middle part of the support frame 4 is set to be U-shaped. The cutting motor 16 moves towards the steel plate 2, and the support frame 4 does not hinder the cutting motor 16. The cutting motor 16 pushes down the frame 17, and the frame 17 drives the push rod 18 to move. The upper end of the push rod 18 presses the spring, which increases the downward pressure of the push rod 18 on the steel plate 2, improves the stability of the steel plate 2 on the workbench 1, and sets the pressing ball 19. When the steel plate 2 is placed, the edge of the steel plate 2 presses the pressing ball 19, which can push up the push rod 18 and smoothly put in the steel plate 2, which will not affect the feeding of the steel plate 2. At the same time, when the support frame 4 moves above the steel plate 2, the pressing ball 19 presses on the steel plate 2, which can also ensure the smooth sliding between the push rod 18 and the steel plate 2. Moreover, the discharged steel plate 2 after processing is not affected, which can be directly pulled out;

[0054] The conductive spring 12 needs to be connected to the power supply, usually through wires. If multiple limiting blocks 51 are set on the strip plate 5, multiple wires are needed. Too many wires will be messy and affect the processing. Therefore, the conductive groove 20 is set on the strip plate 5. When installing, insulation and short circuit problems need to be considered. After the sliding part 8 is installed in the sliding groove 7, the conductive strip 21 is connected to the conductive groove 20, which realizes the connection of the power supply. The cooperation of the conductive strip 21 and the conductive groove 20 makes the device more indirect, reducing the influence of foreign matters on the device.

[0055] In the operation of the device, the operator rotates the hand crank while observing whether the indicator light 23 flickers. When the convex part 13 has not yet slid into the notch 11, all the indicator lights 23 are in an off state, and the buzzer 22 is also in a power-off state. When the convex part 13 just slides into the notch 11, the power supply of the indicator light 23 is turned on through the electrical contact between the convex part 13 and the concave part, the indicator light 23 flickers, at this time the operator is warned to slow down the rotation speed of the hand crank for fine adjustment. When the ball 14 contacts the conductive spring 12, the power supply of the buzzer 22 is also turned on, the buzzer 22 emits a sound to warn the operator that the position adjustment of the cutting blade is in place, at this time the ball 14 also connects the power supply of the cutting motor 16 with the conductive spring 12. The setting of the buzzer 22 and the indicator light 23 enables the operator to accurately judge the specific state of the position adjustment and accurately control the rotation speed of the hand crank, which can save time and improve efficiency;

[0056] The conductive spring 12 itself has elasticity, after being pressed by the ball 14 for many times, the conductive spring 12 will be slightly deformed, which will lead to inaccurate adjustment of the cutting blade. Therefore, the conductive spring 12 needs to be repaired or replaced. The replacement requires disassembly and installation, and the replacement cost of the conductive spring 12 parts needs to be considered. Therefore, the conductive spring 12 is selected to be repaired. When the limiting block 51 is not used, the operator presses the end face of the conductive part 9 with the thumb, presses one rod of the pressing rod 25 with the index finger, and then presses the pressing rod 25 with force. The pressing rod 25 presses the pressing wheel 27 towards the end of the conductive spring 12, the pressing plate presses the deformed part of the end of the conductive spring 12 straight, so as to restore the initial state, and ensure the accuracy of the cutting in the later use;

[0057] When one side of the sliding part 8 is slid into one side of the sliding groove 7, the surface of the friction rod 29 presses the surface of the sliding groove 7, so that the friction rod 29 has a tendency to move towards the middle of the workbench 1. At the same time, the upper half of the friction rod 29 is pressed on one rod of the pressing rod 25, and one rod of the pressing rod 25 is connected to the accommodation groove 24 through the compression spring 26. Therefore, the pressing rod 25 presses the friction rod 29 backward, so that the lower half of the friction rod 29 is pressed on the inner wall of the sliding groove 7, thereby improving the stability between the limiting block 51 and the strip-shaped plate 5 to resist the vibration force generated when the cutting motor 16 rotates;

[0058] The magnet 30 is arranged, and the limiting block 51 is adsorbed on the strip-shaped plate 5 through the magnet 30. The strip-shaped plate 5 is made of iron material. Considering that the conductive strip 21 cooperates with the conductive groove 20, the strip-shaped plate 5 is insulated, which does not affect the transmission of electricity and the adsorption of the magnet 30 on the strip-shaped plate 5. The adsorption and fixation of the magnet 30 and the strip-shaped plate 5 are controlled through the T-shaped rod 31, so as to realize the further stability between the limiting block 51 and the strip-shaped plate 5;

[0059] The thickness of the convex part 13 is less than the interval between the upper and lower inner surfaces of the recess 11, which is to prevent the convex part 13 from hitting the conductive part 9, which would result in the convex part 13 failing to make electrical contact with the recess 11. To this end, the contact plate 32 is connected in the placement groove by elastic plates, and the contact plate 32 moves up and down. When the convex part 13 moves into the recess 11, the convex part 13 presses the edge of the contact plate 32, and then presses the contact plate 32 into the placement groove. The elastic plates press the contact plate 32 from the outside, which ensures that the contact plate 32 makes electrical contact with the convex part 13.

[0060] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments, and the above-described embodiments and descriptions in the specification are only illustrative of the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A precision-positioning steel plate cutting device, characterized in that: The system includes a workbench (1), with multiple strip-shaped chip removal holes on the upper surface of the workbench (1). A steel plate (2) to be cut is placed on the upper surface of the workbench (1). Screws (3) are symmetrically arranged on the workbench (1) via support rods. A support frame (4) is connected between the screws (3). A cutting unit is provided on the support frame (4). The cutting unit is used to cut strip-shaped holes in the steel plate (2). Touch units are provided on both sides of the workbench (1). The touch units are used to control the start and stop of the cutting unit. The trigger unit includes a strip plate (5) fixed on both sides of the workbench (1) and a limiting block (51) installed on the strip plate (5). The outer wall of the strip plate (5) is provided with a scale (6), and a groove (7) is opened on the upper surface of the strip plate (5). The limiting block (51) includes a sliding part (8) and a conductive part (9). The sliding part (8) is in the shape of a vertically oriented U. One side of the sliding part (8) slides in the groove (7), and the other side of the sliding part (8) is attached to the strip plate. (5) On the outer side wall, and the lower end of the other side of the sliding part (8) is provided with a pointer (10); the end of the conductive part (9) is provided with a notch (11), the notch (11) faces the cutting unit, and the bottom of the notch (11) is provided with a conductive spring (12); the end of the support frame (4) is provided with a protrusion (13), the protrusion (13) is slidably connected in the notch (11), and a ball (14) is provided on the side wall of the protrusion (13), and the ball (14) is pressed against the end of the conductive spring (12); Multiple conductive grooves (20) are opened on the outer wall surface of the strip plate (5). The conductive grooves (20) are horizontally arranged along the length direction of the strip plate (5). Multiple conductive strips (21) are provided on the inner surface of the other side of the sliding joint (8). The conductive strips (21) are electrically connected to the conductive grooves (20).

2. The steel plate cutting device for precise positioning according to claim 1, characterized in that: The cutting unit includes a cylinder (15) and a cutting motor (16); the cylinder (15) is mounted in the middle of the support frame (4), and a connecting rod is fixed to the output end of the cylinder (15). The cutting motor (16) is fixed to the end of the connecting rod, and a cutting saw blade is fixed to the output end of the cutting motor (16).

3. The steel plate cutting device for precise positioning according to claim 2, characterized in that: The support frame (4) has an upward-opening U-shape in the middle, and the cutting motor (16) can move up and down along the U-shaped part of the support frame (4); A rectangular frame (17) is fixed to the lower surface of the housing of the cutting motor (16). The frame (17) is horizontally set on the upper surface of the workbench (1). A push rod (18) is slidably connected to the corner of the frame (17). A spring is sleeved on the outer ring of the upper half of the push rod (18). The upper end of the spring is fixed to the upper end of the push rod (18), and the lower end of the spring is fixed to the upper surface of the frame (17). A pressing ball (19) is rotatably connected to the lower end of the push rod (18). The pressing ball (19) presses against the steel plate (2) to be processed on the workbench (1).

4. The steel plate cutting device for precise positioning according to claim 1, characterized in that: The limiting block (51) is provided with a buzzer (22) and an indicator light (23); the indicator light (23) is used to indicate that the protrusion (13) has slid into the recess (11); the buzzer (22) is used to warn that the ball (14) has been electrically connected to the conductive spring (12).

5. The steel plate cutting device for precise positioning according to claim 1, characterized in that: The conductive part (9) is also symmetrically provided with relief grooves (24). The relief grooves (24) are located behind the recess (11). There are conductive springs (12) between the relief grooves (24). One side of the relief groove (24) extends to the outer wall of the conductive part (9), and the other side of the relief groove (24) extends into the recess (11). An L-shaped extrusion rod (25) is provided in the relief groove (24). One rod of the extrusion rod (25) is connected to the side wall of the relief groove (24) near the recess through a compression spring (26). The other end of the extrusion rod (25) extends along the surface of the conductive spring (12) into the recess (11), and the other end of the extrusion rod (25) is rotatably connected to an extrusion wheel (27).

6. The steel plate cutting device for precise positioning according to claim 5, characterized in that: The lower part of the relief groove (24) has an L-shaped groove (28) extending through to the inner surface of one side of the sliding part (8). The upper part of the groove (28) is connected to the relief groove (24), and a friction rod (29) is provided in the groove (28). The shape of the friction rod (29) is the same as that of the groove (28). The lower half of the friction rod (29) protrudes from the lower opening of the groove (28), and the upper half of the friction rod (29) extends horizontally to the rear side wall of the relief groove (24). The upper end of the friction rod (29) extends upward and is located behind one of the rods of the extrusion rod (25).

7. The steel plate cutting device for precise positioning according to claim 6, characterized in that: A through hole is provided on the other side of the sliding joint (8), and a magnet (30) is provided in the through hole. The magnet (30) is attracted to the outer wall of the strip plate (5). A T-shaped rod (31) is fixed to the end face of the magnet (30), and the T-shaped rod (31) is slidably connected in the through hole.

8. The steel plate cutting device for precise positioning according to claim 5, characterized in that: The top and bottom surfaces of the recess (11) are provided with placement grooves, and a power receiving plate (32) is provided in the placement groove. The lower surface of the power receiving plate (32) is connected to the placement groove through an arc-shaped elastic plate.

9. The steel plate cutting device for precise positioning according to claim 5, characterized in that: The end of the conductive part (9) is provided with an arc-shaped opening, and the rear side wall of one of the rods of the extrusion rod (25) is also provided with an arc-shaped opening.

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