Electromagnetic clamping mechanism for machine tools

Abstract

The application discloses a machine tool electromagnetic clamping mechanism and relates to the field of machine tool machining devices. The machine tool electromagnetic clamping mechanism comprises a base, a collecting box is installed on the base, a plurality of groups of electromagnetic columns are fixedly connected in the collecting box at equal intervals, the electromagnetic columns are provided with electromagnetic protrusions, a collecting frame is slidably connected in the collecting box, the collecting frame is provided with a plurality of groups of empty openings, the electromagnetic columns are slidably connected in the empty openings, and the empty openings are matched with the sizes of workpieces. When machining, the electromagnetic columns are powered on to adsorb the connecting rod, the top plate is driven to move downward to firmly fix the workpiece. After machining, the electromagnetic columns are powered off, the spring part is elastically recovered to push the top plate to eject the workpiece, manual forced taking is not needed, damage to the workpiece and the mold in the taking process is avoided, the taking process is simplified, and the production efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of machine tool processing devices, and more specifically, relates to an electromagnetic clamping mechanism for machine tools. Background Technology

[0002] A magnetic chuck is a chuck that uses magnetic force to attract ferromagnetic objects. Electromagnetic chucks are widely used for fixing workpieces during processing. When processing a workpiece, it needs to be placed on the electromagnetic chuck. The electromagnetic chuck generates magnetic force when energized to fix the workpiece, thus facilitating processing such as workpiece washing.

[0003] The existing equipment requires the levelness of the workpiece's adsorption surface to be checked before processing. However, if there are impurities on the workpiece's adsorption surface, it will affect the sealing of the airtightness test port. However, the existing equipment lacks a pre-treatment device, so the staff cannot immediately know whether there are impurities on the workpiece surface or defects in the adsorption surface. Furthermore, in the existing device, after the workpiece is placed into the placement mold for processing, there is very little gap between the workpiece and the placement mold, making it difficult to remove the processed workpiece, which has certain shortcomings. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a machine tool processing device that can overcome the above problems or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is: an electromagnetic clamping mechanism for machine tools, including a base, on which a collection box is installed, and further comprising: Multiple sets of electromagnetic columns are fixedly connected at equal intervals inside the collection box, and each electromagnetic column has an electromagnetic protrusion. A collection frame is slidably connected inside the collection box, and the collection frame has multiple sets of openings. The electromagnetic column is slidably connected inside the openings, and the openings are matched with the workpiece size. A top plate is slidably connected within the opening of the collection frame, and the top plate is used to lift the workpiece; A spring component is fixedly connected within the opening, and the other end of the spring component is fixedly connected to the top plate. A connecting rod is fixedly connected to the bottom of the top plate, and the connecting rod is close to the electromagnetic column; When the electromagnetic column is energized, a magnetic force is generated, which causes the electromagnetic column to attract the connecting rod, causing the top plate to move down and the workpiece to fall into the opening. At the same time, the workpiece will come into contact with the electromagnetic protrusion as it moves down, and then be attracted and fixed. After the electromagnetic column is de-energized, the workpiece will extend from the opening under the action of the spring.

[0006] Furthermore, a mounting frame is installed on the base, and a conveying component, a pretreatment component, and an airtightness detection component are installed on the mounting frame.

[0007] Furthermore, the conveying assembly includes a motor and conveying rollers. The motor is fixedly connected to the mounting frame, and multiple sets of conveying rollers are rotatably connected at equal intervals within the seed mounting frame. The conveying rollers are used to convey the workpiece.

[0008] Furthermore, the mounting frame is rotatably connected to multiple sets of transmission wheels, each transmission wheel is fitted with a transmission belt, the transmission wheels are fixedly connected to the conveying rollers, and the motor is fixedly connected to one set of the transmission wheels.

[0009] Furthermore, the pretreatment component is located above the conveyor roller and near the loading end of the mounting frame. The pretreatment component includes two sets of pretreatment plates installed opposite each other. The pretreatment plates are sequentially provided with a primary air jet nozzle, multiple sets of water jet nozzles, and a secondary air jet nozzle. The primary air jet nozzle is used to spray gas with a low flow rate to pretreat the sides of the workpiece. The multiple sets of water jet nozzles are used to spray cleaning liquid to clean the two sides of the workpiece. Finally, the secondary air jet nozzle, which can spray high-pressure gas, cleans the sides of the workpiece.

[0010] Furthermore, the mounting bracket is provided with a drain outlet near the feeding end.

[0011] Furthermore, the airtightness detection component includes a telescopic cylinder, a moving plate, a telescopic rod, a clamping plate, a piston cylinder, and a pressure sensor. Two sets of telescopic cylinders are fixedly connected to the mounting frame and located at the unloading end of the pretreatment component. The moving plate is fixedly connected to the telescopic end of the telescopic cylinder, and the telescopic rod is fixedly connected to the moving plate with its telescopic end penetrating through the moving plate. Multiple sets of support rods are fixedly connected to the moving plate, and the other end of each support rod is fixedly connected to the clamping plate. Multiple sets of piston cylinders are mounted on the clamping plate, and the pressure sensor is installed inside the piston cylinder. The piston cylinder is provided with an air intake port, the air inlet end of which is located on the clamping plate. The telescopic end of the piston cylinder is fixedly connected to the telescopic end of the telescopic rod.

[0012] Furthermore, a pressure plate is fixedly connected to the telescopic end of the telescopic rod, and the telescopic end of the piston cylinder is fixedly connected to the pressure plate.

[0013] Furthermore, the mounting frame is equipped with two sets of partition plates at the unloading end, which are used to classify the workpieces.

[0014] Furthermore, the collection frame is detachably equipped with a mounting plate for maintaining the spring components and the top plate.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: During processing, the electromagnetic column is energized to attract the connecting rod, which drives the top plate to move down and fix the workpiece firmly; after processing, the electromagnetic column is de-energized, and the spring component elastically recovers to push the top plate to eject the workpiece, eliminating the need for manual forced removal of the workpiece. This not only avoids damage to the workpiece and mold during the removal process, but also simplifies the removal process and improves production efficiency. Meanwhile, the pretreatment component can effectively clean the dust, oil and other impurities on the adsorption surface. Attached Figure Description

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the structure of an electromagnetic clamping mechanism for machine tools proposed in this invention; Figure 2 This is a schematic diagram of the collection box in an electromagnetic clamping mechanism for machine tools proposed in this invention; Figure 3 This invention proposes an electromagnetic clamping mechanism for machine tools. Figure 2 A schematic diagram of the structure of part A; Figure 4 This is a schematic diagram of the collection box and collection frame in an electromagnetic clamping mechanism for machine tools proposed in this invention; Figure 5 This is a schematic diagram of the structure of the transmission component, pretreatment component, and airtightness detection component in the electromagnetic clamping mechanism for machine tools proposed in this invention. Figure 1 ; Figure 6 This invention proposes an electromagnetic clamping mechanism for machine tools. Figure 5 Schematic diagram of part B Figure 2 ; Figure 7 This invention proposes an electromagnetic clamping mechanism for machine tools. Figure 6 A structural diagram of section C; Figure 8 This is a schematic diagram of the structure of the transmission component, pretreatment component, and airtightness detection component in the electromagnetic clamping mechanism for machine tools proposed in this invention. Figure 2 .

[0017] In the diagram: 1. Base; 2. Collection box; 201. Electromagnetic column; 3. Collection frame; 301. Spring component; 302. Top plate; 303. Connecting rod; 304. Mounting plate; 4. Mounting bracket; 401. Leakage port; 5. Divider plate; 601. Motor; 602. Drive wheel; 603. Drive belt; 604. Conveying roller; 701. Telescopic cylinder; 702. Moving plate; 703. Telescopic rod; 704. Pressure plate; 705. Clamping plate; 706. Piston cylinder; 707. Air intake port; 8. Pretreatment plate; 801. Primary air jet port; 802. Water jet port; 803. Secondary air jet port. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] Example: Refer to Figure 1-8 An electromagnetic clamping mechanism for machine tools includes a base 1, a collection box 2 mounted on the base 1, and further includes: Multiple sets of electromagnetic columns 201 are fixedly connected at equal intervals inside the collection box 2, and the electromagnetic columns 201 have electromagnetic protrusions. The collection frame 3 is slidably connected inside the collection box 2, and the collection frame 3 has multiple sets of openings. The electromagnetic column 201 is slidably connected inside the openings, and the openings match the size of the workpiece. The top plate 302 is slidably connected in the opening of the collection frame 3, and the top plate 302 is used to lift the workpiece; Spring 301 is fixedly connected inside the opening, and the other end of spring 301 is fixedly connected to top plate 302. The connecting rod 303 is fixedly connected to the bottom of the top plate 302, and the connecting rod 303 is close to the electromagnetic column 201; When the electromagnetic column 201 is energized, a magnetic force is generated, which causes the electromagnetic column 201 to attract the connecting rod 303, causing the top plate 302 to move down, and the workpiece to fall into the opening. At the same time, the workpiece will come into contact with the electromagnetic protrusion as it moves down, and then be attracted and fixed. After the electromagnetic column 201 is de-energized, the workpiece will extend from the opening under the action of the spring component 301.

[0020] A mounting frame 4 is installed on the base 1, and a conveying component, a pretreatment component, and an airtightness detection component are installed on the mounting frame 4.

[0021] The conveying assembly includes a motor 601 and conveying rollers 604. The motor 601 is fixedly connected to the mounting frame 4, and multiple sets of conveying rollers 604 are rotatably connected at equal intervals inside the mounting frame 4. The conveying rollers 604 are used to convey the workpiece.

[0022] Multiple sets of transmission wheels 602 are rotatably connected to the mounting frame 4. A transmission belt 603 is sleeved on the transmission wheel 602. The transmission wheel 602 is fixedly connected to the conveyor roller 604, and the motor 601 is fixedly connected to one of the sets of transmission wheels 602.

[0023] The pretreatment assembly is located above the conveyor roller 604 and close to the feeding end of the mounting frame 4. The pretreatment assembly includes two sets of pretreatment plates 8 installed opposite each other. The pretreatment plates 8 are sequentially provided with a primary air jet 801, multiple sets of water jets 802, and a secondary air jet 803. The primary air jet 801 is used to spray gas with a low flow rate to pretreat the sides of the workpiece. The multiple sets of water jets 802 are used to spray cleaning liquid to clean the two sides of the workpiece. Finally, the secondary air jet 803, which can spray high-pressure gas, cleans the sides of the workpiece.

[0024] Furthermore, an air pump and a liquid pump are fixedly installed on the outside of the mounting bracket 4. The air pump is connected to the primary air outlet 801 and the secondary air outlet 803 through an air pipe to provide a stable air source for the air outlets (the preset pressure of the primary air outlet is 0.3-0.5MPa, and the preset pressure of the secondary air outlet is 0.8-1.0MPa). The liquid pump is connected to the water spray outlet 802 through a liquid pipe to deliver cleaning liquid to the water spray outlet (the preset flow rate is 5-8L / min).

[0025] The mounting frame 4 has a drain port 401 near the feeding end. The drain port 401 is located directly below the pretreatment component. A liquid recovery tank is fixedly installed on the base 1 at the position corresponding to the drain port 401. The opening of the liquid recovery tank is directly opposite the drain port 401. It is used to collect the cleaning waste liquid generated during the pretreatment process to realize resource recycling and reuse. A liquid level sensor is installed in the liquid recovery tank and is electrically connected to the control system.

[0026] The airtightness testing component includes a telescopic cylinder 701, a movable plate 702, a telescopic rod 703, a clamping plate 705, a piston cylinder 706, and a pressure sensor. Two sets of telescopic cylinders 701 are fixedly connected to the mounting frame 4 and are located at the unloading end of the pretreatment component. The movable plate 702 is fixedly connected to the telescopic end of the telescopic cylinder 701. The telescopic rod 703 is fixedly connected to the movable plate 702 and its telescopic end passes through the movable plate 702. Multiple sets of support rods are fixedly connected to the movable plate 702. The other end of the support rods is fixedly connected to the clamping plate 705. Multiple sets of piston cylinders 706 are installed on the clamping plate 705, and the pressure sensor is installed inside the piston cylinder 706. The piston cylinder 706 is provided with an air intake port 707. The air intake end of the air intake port 707 is located on the clamping plate 705. The telescopic end of the piston cylinder 706 is fixedly connected to the telescopic end of the telescopic rod 703. The two sets of telescopic cylinders 701 start synchronously, driving the two side moving plates 702 to move closer to the workpiece.

[0027] A pressure plate 704 is fixedly connected to the telescopic end of the telescopic rod 703, and the telescopic end of the piston cylinder 706 is fixedly connected to the pressure plate 704.

[0028] The mounting frame 4 has two sets of partition plates 5 installed at the unloading end. The partition plates 5 are used to classify the workpieces.

[0029] A mounting plate 304 is detachably mounted on the collection box 3 for maintaining the spring component 301 and the top plate 302.

[0030] Preferably, the mechanism also includes a control system, which is based on a PLC controller and is electrically connected to the air pump, liquid pump, motor 601, telescopic cylinder 701, telescopic rod 703, electromagnetic column 201, air pressure sensor, liquid level sensor and proximity switches at each workstation (for accurate detection of workpiece position). It is equipped with a touch screen and alarm device to realize the coordinated automated operation of each component and abnormal early warning.

[0031] When in use, the manual or automatic feeding device places the workpiece to be processed on the conveyor roller 604 at the feeding end of the mounting frame 4. After the proximity switch at the feeding end detects the workpiece, it immediately sends a signal to the control system.

[0032] After receiving the signal, the control system starts the motor 601. The motor 601 drives the transmission wheel 602 to rotate, and drives all the conveyor rollers 604 to rotate synchronously at a preset speed (0.2-0.5m / s) through the transmission belt 603. The workpiece moves toward the pretreatment component along with the conveyor rollers 604.

[0033] When the workpiece moves to the inlet of the pretreatment component, the proximity switch in the pretreatment area sends a feedback signal, triggering the pretreatment process in the control system. Step 1: Start the air pump and adjust the output pressure to 0.3-0.5MPa. The air jet nozzle 801 continuously sprays low-speed gas to initially blow away the floating dust and debris on both sides of the workpiece. The preset duration is 3 seconds. Step 2: Keep the air pump on standby, start the liquid pump, and deliver the cleaning fluid to the spray nozzle 802 at the preset flow rate (5-8L / min). The cleaning fluid is evenly sprayed on both sides of the workpiece to dissolve oil and stubborn stains. The preset duration is 5 seconds. Step 3: Turn off the liquid pump, increase the output pressure of the air pump to 0.8-1.0MPa, and spray high-pressure gas from the secondary air nozzle 803 to thoroughly blow away the residual cleaning liquid and impurities on the workpiece surface, ensuring that the surface is dry and clean. The preset time is 4 seconds.

[0034] The waste cleaning fluid generated during the pretreatment process flows directly into the liquid recovery tank below through the drain port 401 of the mounting bracket 4; when the liquid level sensor in the liquid recovery tank detects that the waste liquid has reached the preset maximum liquid level, the control system triggers the alarm device to prompt the waste liquid to be cleaned.

[0035] The airtightness test will be conducted next: After pretreatment, the workpiece continues to move with the conveyor roller 604. When it reaches the airtightness test station, the proximity switch of the test area sends a signal, and the control system immediately controls the motor 601 to stop working, the conveyor roller 604 stops, and the workpiece is accurately positioned between the two sets of clamping plates 705.

[0036] The control system activates two sets of telescopic cylinders 701, which drive the two side moving plates 702 and clamping plates 705 to move towards the workpiece at a preset speed until the clamping plates 705 are tightly pressed against the two sides of the workpiece, thus completing the initial fixation of the workpiece.

[0037] After clamping and fixing, the control system starts the telescopic rod 703. The telescopic rod 703 extends away from the moving plate 702 at a speed of 3mm / s, driving the pressure plate 704 to move synchronously, which in turn pulls the piston cylinder 706 to extend, and a negative pressure is formed inside the piston cylinder 706.

[0038] The piston cylinder 706 generates an adsorption force on the side of the workpiece through the air intake port 707, so that the side of the workpiece is tightly attached to the air intake port 707; at the same time, the air pressure sensor inside the cylinder detects the negative pressure value in real time and uploads data to the control system every 0.5 seconds for 3 seconds.

[0039] After receiving the air pressure data, the control system compares and analyzes the negative pressure values ​​of the piston cylinders 706 on both sides: If the negative pressure values ​​on both sides are ≥-0.08MPa and the difference is ≤0.05MPa, the flatness of the two sides of the workpiece is considered to be similar. If the negative pressure values ​​on both sides are ≥-0.08MPa, but the difference is >0.05MPa, the side with the lower negative pressure value is judged to have better surface flatness. If the negative pressure value on one side is ≥-0.08MPa and the negative pressure value on the other side is <-0.08MPa, the surface of the side with the negative pressure value ≥-0.08MPa is deemed qualified. If the negative pressure values ​​on both sides are less than -0.08 MPa, the workpiece is deemed unqualified on both sides.

[0040] After the test is completed, the control system controls the telescopic rod 703 to retract based on the judgment result: When the flatness of both sides is similar, the telescopic rods 703 on both sides retract synchronously at a speed of 5mm / s, the piston cylinder 706 shortens synchronously, the negative pressure gradually disappears, and the workpiece detaches from the adsorption on both sides at the same time. When there is a large difference in flatness on both sides, the telescopic rod 703 on the side with lower negative pressure (unstable adsorption) retracts first, and the negative pressure on the corresponding piston cylinder 706 disappears, and that side is detached from adsorption; the telescopic rod 703 on the other side retracts after a delay of 2 seconds, ensuring that the workpiece completes the posture adjustment.

[0041] When placing the workpiece subsequently.

[0042] After the airtightness test is completed, the control system restarts the motor 601 according to the judgment result: qualified workpieces continue to move with the conveyor roller 604, and unqualified workpieces are directly conveyed to the unqualified area at the unloading end.

[0043] When a qualified workpiece moves above the collection box 2, the proximity switch of the collection area sends a feedback signal, and the control system adjusts the speed of the motor 601 so that the workpiece slowly falls into the corresponding opening of the collection frame 3 (the opening and the workpiece size are precisely matched to ensure accurate positioning).

[0044] After the workpiece falls in, the control system controls the electromagnetic column 201 to be energized (preset current 5A), generating a strong magnetic force to attract the connecting rod 303. The connecting rod 303 drives the top plate 302 to move downward at a speed of 4mm / s, and the spring 301 is compressed.

[0045] Under the combined effect of its own weight and the downward movement of the top plate 302, the workpiece falls completely into the opening, and its bottom comes into close contact with the electromagnetic protrusion on the electromagnetic column 201. The electromagnetic protrusion enhances the adsorption force, thus firmly fixing the workpiece.

[0046] After the control system confirms that the workpiece is clamped, it sends a "processing ready" signal to the machine tool processing system, and the machine tool starts the processing flow. During the processing, the control system monitors the current and magnetic force of the electromagnetic column 201 in real time. If abnormal attenuation occurs, an alarm is immediately triggered and processing is suspended.

[0047] The debris generated during processing falls into the bottom of the collection box 2 through the gaps in the collection frame 3, making it easy to collect and clean up later.

[0048] When finally unloading the materials: After the machine tool completes the machining, it sends a "machining completed" signal to the control system. The control system then delays for 1 second before de-energizing the electromagnetic column 201, causing the magnetic force to disappear.

[0049] Under the action of elastic restoring force, the compressed spring 301 extends upward at a speed of 6 mm / s, pushing the top plate 302 to move upward synchronously. The top plate 302 pushes the processed workpiece out of the opening, and the pushing height is 10 mm higher than the upper surface of the collection frame 3, which facilitates subsequent picking or conveying.

[0050] After the proximity switch in the ejection area detects that the workpiece has been ejected, the control system starts the moving mechanism (with a linear motor) of the collection frame 3 to transport the ejected workpiece to the unloading end; or the workpiece is transferred to the unloading end of the mounting frame 4 by a subsequent conveying device.

[0051] After the proximity switch at the unloading end detects the workpiece, the control system controls the guiding angle of the two sets of partition plates 5 according to the previous airtightness test results: qualified workpieces are guided to the qualified product collection box, and unqualified workpieces are guided to the unqualified product collection box, so as to realize automatic classification.

[0052] When maintenance is required on components such as spring 301 and top plate 302, turn off the power to the equipment, remove the mounting plate 304 on the collection frame 3, and then inspect or replace the internal components of the air outlet. After maintenance, reinstall the mounting plate 304 to restart the equipment.

[0053] Specifically, the overall control flow is as follows: The control system is based on a PLC controller and achieves fully automated linkage according to a preset program. The specific workflow is as follows: Startup Initialization: After the equipment is powered on, the operator starts the system through the touch screen. The control system automatically performs self-checks on the air pump, liquid pump, motor 601, telescopic cylinder 701, telescopic rod 703, electromagnetic column 201, air pressure sensor, liquid level sensor and all proximity switches. After confirming that the power supply and signal connection of each component are normal, it enters standby mode. If an abnormality is detected, the alarm device immediately issues an audible and visual alarm, and the touch screen displays the location and cause of the fault.

[0054] Feeding trigger: After the proximity switch at the feeding end detects that the workpiece is placed on the conveyor roller 604, it sends a high-level signal to the PLC controller. After receiving the signal, the controller outputs a command to start the motor 601 and drive the conveying component to run according to the preset parameters, and the workpiece begins to be conveyed.

[0055] Pre-treatment linkage: After the proximity switch in the pre-treatment area detects the workpiece, the controller controls the start and stop of the air pump (primary air jet, secondary air jet) and the liquid pump and adjusts the parameters in sequence according to the preset time sequence to complete the workpiece cleaning; at the same time, it receives the liquid level sensor signal of the liquid recovery tank in real time to monitor the waste liquid collection status.

[0056] Closed-loop control for airtightness detection: Upon receiving the proximity switch signal from the detection station, the motor 601 is stopped, and the telescopic cylinder 701 is activated to complete the workpiece clamping. The pressure sensor provides feedback to confirm that the workpiece is clamped in place. The telescopic rod 703 is extended to drive the piston cylinder 706 to adsorb the workpiece. Real-time data from the air pressure sensor is received and compared to generate test results. Based on the test results, an instruction is output to control the telescopic rod 703 to retract in the corresponding mode, thus completing the test process.

[0057] Classification and conveying control: Based on the airtightness test results, the controller marks the qualified status of the workpiece and controls the conveying component to transport qualified workpieces to the collection box 3, while unqualified workpieces are directly guided to the unqualified area at the unloading end.

[0058] Electromagnetic clamping and machining coordination: Receives proximity switch signals from the collection area, controls the electromagnetic column 201 to be energized to clamp the workpiece, and sends a machining ready signal to the machine tool; monitors the working status of the electromagnetic column 201 in real time to ensure stable clamping during machining.

[0059] Ejection and unloading control: Receives the machine tool processing completion signal, controls the electromagnetic column 201 to de-energize, triggers the spring component 301 to eject the workpiece; receives the ejection detection signal, controls the movement of the collection frame or subsequent conveying device, and works with the separator plate 5 to complete the workpiece sorting and unloading.

[0060] Cycle and Stop: After the workpiece is unloaded, the control system detects that the workpiece has detached from the equipment and returns to standby mode to wait for the next workpiece to be loaded. If a stop command is received from the touch screen, or if no workpiece is loaded for 5 consecutive minutes, the power supply to all actuators will be automatically turned off and the system will enter sleep mode.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A machine tool electromagnetic clamping mechanism, comprising a base (1), wherein a collection box (2) is mounted on the base (1), characterized in that, Also includes: Multiple sets of electromagnetic columns (201) are fixedly connected at equal intervals inside the collection box (2), and the electromagnetic columns (201) have electromagnetic protrusions; The collection frame (3) is slidably connected inside the collection box (2), and the collection frame (3) has multiple sets of openings. The electromagnetic column (201) is slidably connected inside the openings, and the openings are matched with the workpiece size. The top plate (302) is slidably connected in the opening of the collection frame (3), and the top plate (302) is used to lift the workpiece; A spring element (301) is fixedly connected within the opening, and the other end of the spring element (301) is fixedly connected to the top plate (302); A connecting rod (303) is fixedly connected to the bottom of the top plate (302), and the connecting rod (303) is close to the electromagnetic column (201). When the electromagnetic column (201) is energized, a magnetic force is generated, which causes the electromagnetic column (201) to attract the connecting rod (303), causing the top plate (302) to move down, and the workpiece to fall into the opening. At the same time, the workpiece will come into contact with the electromagnetic protrusion as it moves down, and then be attracted and fixed. After the electromagnetic column (201) is de-energized, the workpiece will extend out of the opening under the action of the spring (301); The base (1) is equipped with a mounting frame (4), and the mounting frame (4) is equipped with a conveying component, a pretreatment component, and an airtightness detection component. The pretreatment component is located above the conveyor roller (604) and close to the loading end of the mounting frame (4). The pretreatment component includes two sets of pretreatment plates (8) installed opposite to each other. The pretreatment plates (8) are sequentially provided with a primary air jet (801), multiple sets of water jets (802), and a secondary air jet (803). The primary air jet (801) is used to spray out gas with a low flow rate to pretreat the side of the workpiece. The multiple sets of water jets (802) are used to spray out cleaning liquid to clean the two sides of the workpiece. Finally, the secondary air jet (803) that can spray out high-pressure gas cleans the side of the workpiece. The airtightness testing component includes a telescopic cylinder (701), a movable plate (702), a telescopic rod (703), a clamping plate (705), a piston cylinder (706), and a pressure sensor. Two sets of the telescopic cylinders (701) are fixedly connected to the mounting frame (4) and located at the unloading end of the pretreatment component. The movable plate (702) is fixedly connected to the telescopic end of the telescopic cylinder (701). The telescopic rod (703) is fixedly connected to the movable plate (702), and its telescopic end passes through the movable plate (702). Multiple sets of... A support rod is provided, with one end of which is fixedly connected to a clamping plate (705). Multiple sets of piston cylinders (706) are installed on the clamping plate (705), and the air pressure sensor is installed inside the piston cylinder (706). An air intake port (707) is provided on the piston cylinder (706), with the air inlet end of the air intake port (707) located on the clamping plate (705). The telescopic end of the piston cylinder (706) is fixedly connected to the telescopic end of the telescopic rod (703). Two sets of telescopic cylinders (701) start synchronously, driving the moving plates (702) on both sides to move closer to the workpiece.

2. The machine tool electromagnetic clamping mechanism according to claim 1, characterized in that, The conveying assembly includes a motor (601) and conveying rollers (604). The motor (601) is fixedly connected to the mounting frame (4), and multiple sets of conveying rollers (604) are rotatably connected at equal intervals inside the mounting frame (4). The conveying rollers (604) are used to convey the workpiece.

3. The machine tool electromagnetic clamping mechanism according to claim 2, characterized in that, Multiple sets of transmission wheels (602) are rotatably connected to the mounting frame (4). A transmission belt (603) is sleeved on the transmission wheel (602). The transmission wheel (602) is fixedly connected to the conveying roller (604), and the motor (601) is fixedly connected to one of the sets of transmission wheels (602).

4. The machine tool electromagnetic clamping mechanism according to claim 1, characterized in that, The mounting bracket (4) is provided with a drain outlet (401) near the feeding end.

5. The machine tool electromagnetic clamping mechanism according to claim 1, characterized in that, A pressure plate (704) is fixedly connected to the telescopic end of the telescopic rod (703), and the telescopic end of the piston cylinder (706) is fixedly connected to the pressure plate (704).

6. The electromagnetic clamping mechanism for machine tools according to claim 1, characterized in that, The mounting frame (4) has two sets of partition plates (5) installed at the unloading end, which are used to classify the workpieces.

7. The electromagnetic clamping mechanism for machine tools according to claim 1, characterized in that, The collection frame (3) is detachably mounted with an installation plate (304) for maintaining the spring component (301) and the top plate (302).

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