Metal plate bench drill for metal showcase processing

Abstract

The present application relates to the technical field of drilling machine, in particular to a metal plate bench drilling machine for metal showcase machining, and relates to the category of numerical control blade, which comprises a bed, a plate table arranged on the bed, a driving seat arranged above the bed and a drill arranged on the driving seat, a material pushing structure is arranged on one side of the driving seat in the material discharging direction, the material pushing structure comprises a linear track arranged along the material discharging direction, a sliding seat slidingly installed on the linear track and a latch arranged below the sliding seat; when the latch moves to the corresponding position of the machined hole with the sliding seat, it can bypass the drill and be inserted into the machined hole and be locked with the hole, the sliding seat is locked with the machined hole through the latch, and the material is moved a preset distance along the discharging direction; a clamp for clamping and releasing the material is arranged on the plate table; numerical control blade is adopted to open the hole, and the fixed hole on the metal showcase component can be accurately machined.

Description

Technical Field

[0001] This invention relates to the field of drilling technology, specifically to a metal plate bench drill for processing metal display cases. Background Technology

[0002] Metal display cases, commonly used in shopping malls, exhibition halls, museums, and other venues for displaying goods or exhibits, typically consist of various metal components such as columns, beams, shelves, decorative strips, and glass clamps. The manufacturing process of metal display cases involves extensive drilling of these long, narrow metal components. These holes are usually distributed at multiple points, either equidistant or unequally spaced, along the length of the component. Benchtop drilling machines, common drilling equipment in the metalworking field, are widely used in the hole-machining of small and medium-sized metal parts due to their compact structure, ease of operation, and low cost. With the continuous development of CNC technology, some benchtop drilling machines have begun to incorporate CNC systems and CNC cutting tools for automated drilling. By controlling the raising, lowering, and positioning of the drill bit through preset machining programs, processing efficiency and hole consistency are improved to a certain extent.

[0003] However, in the actual production process of machining long strip beams and decorative strips in metal display cases using CNC cutting tools for multi-hole machining, the worktable of existing bench drills is usually limited in size, while the length of display case beams and decorative strips often reaches several meters. During machining, the suspended part of the material lacks effective support and is prone to bending deformation due to its own weight. More importantly, when machining multiple holes on long strip materials, existing drills generally use external measurement systems as positioning references, such as measuring displacement with a grating ruler, using a stepper motor and lead screw to drive the slide table, or manually marking positioning. After machining each hole, it is necessary to remeasure and move the material to the next hole. In this way, the position of each hole is calculated step by step based on external reference points. Transmission errors, measurement errors, and thermal deformation errors accumulate with the increase in the number of holes, resulting in the hole position deviation at the end far exceeding the allowable tolerance range, which seriously affects the assembly accuracy between the components of the display case and the overall appearance quality. Summary of the Invention

[0004] The purpose of this invention is to provide a metal plate bench drill for processing metal display cases, so as to achieve the purpose of accurately processing the fixing holes on the metal display case components, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a metal plate bench drill for processing metal display cases, comprising a bed, a plate disposed on the bed, a drive seat disposed above the bed, and a drill bit disposed on the drive seat. The drive seat is provided with a material pushing structure on one side of the material discharge direction. The material pushing structure includes a linear track arranged along the material discharge direction, a slide mounted on the linear track, and a pin disposed below the slide. When the pin moves with the slide to the position corresponding to the machined hole, it can bypass the drill bit and insert downward into the machined hole and lock with the hole. The slide drives the material to move synchronously a preset distance along the discharge direction through the locking of the pin with the machined hole. The plate is equipped with a clamp for clamping and releasing materials. The clamp releases the material before the slide moves the material and clamps the material after it moves into place, so as to use the machined holes as the positioning reference for subsequent holes to realize the continuous processing of multiple holes on the material.

[0006] The slide is fitted with a base, which has a cavity and a movable adjustment seat, with a pin on the adjustment seat. The base sidewall is provided with a zigzag guide groove consisting of a vertical groove, a downward inclined groove and a vertical groove connected in sequence. The limiting rods on both sides of the adjusting seat slide through the guide groove, so that when the adjusting seat moves down, it moves along a three-segment trajectory of vertical, inclined and vertical. The pin moves from above the machined hole to directly above and is then inserted into the hole.

[0007] The adjusting seat is connected to a lifting spring on its side, and the other end of the lifting spring is connected to the slide block, so that the adjusting seat is kept in the initial position at the top of the cavity; A magnetic plate is installed on the side block at the outer end of the limit rod, and an electromagnetic seat is installed on the base plate. When the electromagnetic seat is energized, it generates a magnetic attraction force on the magnetic plate, pulling the adjustment seat down along the guide groove.

[0008] The pin is mounted on the adjusting seat via a hanger rod. The pin and hanger rod are hollow, and the outer diameter of the pin is smaller than the hole diameter. The pin has multiple through slots in its circumference and an expansion block is slidably installed thereon. The pin cavity is equipped with a center seat and a limiting spring connecting the inner baffle of the expansion block and the center seat.

[0009] The expansion block is equipped with a pressure block below its inclined surface. The top of the pressure block is connected to the slide block after passing through the center seat, pin, and hanger cavity via a cable. The cable has a redundant length. When the adjusting seat moves down to the lowest vertical section of the guide groove, the cable is straightened. The adjusting seat continues to move down, causing the cable to pull the pressure block up. Through the inclined surface, the expansion block is pushed to extend radially along the through groove and engage with and lock against the inner wall of the machined hole.

[0010] The platform is symmetrically equipped with foldable side support structures on both sides, which include a recycling seat rotatably installed under the platform and a telescopic rod slidably installed in the recycling seat. The front end of the telescopic rod is equipped with a roller support. The roller axis is perpendicular to the length of the material. After the telescopic rod is pulled out, the support supports the material at both ends and provides rolling support when the material is pushed.

[0011] The linear track has a hanger at its end and a first light source installed at its bottom. A photoelectric receiver is installed below the slide block. The photoelectric receiver and the first light source form a through-beam photoelectric switch. When the adjusting seat moves down to the bottom of the guide groove, the photoelectric receiver receives the light signal from the first light source and outputs a conduction signal to the control system. After receiving the signal, the control system controls the linear track to drive the slide block to move a preset distance.

[0012] The recycling seats are installed in the limiting groove below the platform via a rotating shaft. The tail ends of the two recycling seats are hinged to traction seats. The electric push rod below the platform is connected to the traction seat. When the electric push rod pushes the traction seat to move down, the recycling seat rotates, causing the support to tilt upward and lift the material off the platform. When the electric push rod pulls the traction seat to move up, the support descends and lowers the material onto the platform.

[0013] A second light source is provided on the side of the junction between the inclined groove of the guide groove on the side wall of the base and the vertical groove below. When the photoelectric receiver moves down to the junction, it receives the light signal of the second light source. The electric push rod pushes the traction seat down according to the signal to lift the material. The extension and retraction direction of the electric push rod is determined and controlled according to the on and off state of the electromagnetic seat.

[0014] The support is equipped with auxiliary side guide wheels on both sides. After the material is lifted, the auxiliary side guide wheels restrict its left and right swing, ensuring that the material maintains linear motion during the pushing process.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses CNC cutting tools to create holes in the display case beams and decorative strips. By setting up a material pushing structure and using pre-machined holes as positioning references for subsequent holes, the positioning reference for each hole is the actual position of the previous pre-machined hole rather than external theoretical coordinates. This completely eliminates the end hole position deviation caused by the gradual accumulation of measurement errors, transmission errors, and thermal deformation errors in traditional step feeding methods, and achieves precise hole machining with zero cumulative error.

[0016] 2. By setting up a linear track and slide driven by a precision ball screw guide, and with the rigid locking connection between the pin and the fixing hole, the material will not slip or deviate during the pushing process, ensuring the accuracy and consistency of the feeding distance each time. The deviation between adjacent holes can be controlled within a very small range, which significantly improves the processing accuracy of multiple fixing holes on the display case beam and decorative strip.

[0017] 3. By setting up foldable side support structures on both sides of the platform and using recycling seats, telescopic rods and roller-type supports to assist in supporting and guiding the two ends of long strip materials, the problem of shaking and bending deformation caused by excessively long hanging parts during the processing of long strip materials is effectively solved. Combined with the precise machining of CNC cutting tools, the stability of the material and the reliability of the drilling quality are guaranteed during the drilling process.

[0018] 4. By setting up an adjustment seat drive mechanism consisting of an electromagnetic base, magnetic plate, zigzag guide groove, and limiting rod, the pin can automatically adjust its position along a three-segment trajectory of vertical groove, downward inclined groove, and vertical groove during the insertion of the fixing hole, ensuring that the pin is accurately inserted into the machined hole. By setting a radially expandable expansion block around the pin, in conjunction with the expansion drive structure consisting of inner baffle, pressure block, and pull cable, the pin can be rigidly locked to the inner wall of the hole after being inserted into the fixing hole through the expansion block. During the material pushing process, the pin will not come out of the hole, ensuring the reliability and synchronization of the pushing. When the pin is pulled out, the expansion block automatically retracts, preventing squeezing damage to the inner wall of the machined hole or enlargement of the hole diameter, effectively protecting the hole quality.

[0019] 5. By setting up a through-beam photoelectric switch consisting of a photoelectric receiver and a first light source, the photoelectric receiver sends a positioning signal when the adjusting seat moves down to the bottom of the guide groove. After receiving the signal, the control system controls the linear track to drive the slide to move precisely at the preset hole distance. By setting a second light source at the junction of the lower inclined groove and the lower vertical groove of the guide groove and using the signal from the photoelectric receiver to control the action of the electric push rod, the automatic lifting of the material by the support during the insertion of the pin and the automatic lowering of the material by the support after the pin is pulled out are realized. This allows the material to disengage from the plate when being pushed to reduce frictional resistance, while being stably supported on the plate during drilling to ensure processing rigidity. This achieves automated switching of the material support state. Attached Figure Description

[0020] Figure 1 This is a first schematic diagram of the overall structure of the drilling machine of the present invention.

[0021] Figure 2 This is a second schematic diagram of the overall structure of the drilling machine of the present invention.

[0022] Figure 3 This is a schematic diagram of the plate structure of the present invention.

[0023] Figure 4 This is a schematic diagram of the drill bit and material pushing structure of the present invention.

[0024] Figure 5 This is a schematic diagram of the material pushing structure of the present invention.

[0025] Figure 6 This is a first schematic diagram of the pin and its mounting structure of the present invention.

[0026] Figure 7 This is a second schematic diagram of the pin and its mounting structure of the present invention.

[0027] Figure 8 This is a schematic diagram of the pin and lifting seat structure of the present invention.

[0028] Figure 9 This is a schematic diagram of the internal structure of the pin and the rod of the present invention.

[0029] Figure 10 This is a schematic diagram of the expansion block structure of the present invention.

[0030] Figure 11 This is a first schematic diagram of the side support structure of the present invention.

[0031] Figure 12 This is a second schematic diagram of the side support structure of the present invention.

[0032] In the diagram: 1. Bed base; 2. Platform; 3. Drive seat; 4. Drill bit; 5. Mounting slot; 6. Clamp; 7. Retrieval seat; 8. Telescopic rod; 9. Support piece; 10. Linear track; 11. Sling; 12. Slide seat; 13. Base; 14. Guide groove; 15. Adjustment seat; 16. Limiting rod; 17. Lifting spring; 18. Side block; 19. Magnetic plate; 20. Electromagnetic seat; 21. Lifting rod; 22. Pin; 23. Expansion block; 24. Inner baffle; 25. Center seat; 26. Limiting spring; 27. Pressure block; 28. Cable; 29. ​​Photoelectric receiver; 30. Hanger; 31. First light source; 32. Limiting groove; 33. Traction seat; 34. Electric actuator; 35. Second light source. Detailed Implementation

[0033] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1 to 12 The present invention provides a technical solution: a metal plate bench drill for processing metal display cases. The drill is used for intelligent manufacturing of display case beams and decorative strips on metal display cases, and uses CNC cutting tools to process the fixing holes on the long beams and strips.

[0035] like Figure 1 , Figure 2As shown, the metal plate bench drill has a floor-standing bed 1, which can be stably placed on the ground by its own weight. A vertical beam is provided on the bed 1, and a metal flat plate 2 is fixed to the middle of the vertical beam by bolts. A drive seat 3 is welded to the top of the vertical beam. A lifting drill bit 4 is provided on the drive seat 3, which has a tool holder and replaceable CNC cutting tools. It can process fixed holes on the display case beam and decorative strip by rotating the CNC cutting tool.

[0036] like Figures 1-3 As shown, a straight mounting groove 5 is provided on the plate 2. Two clamps 6 are installed on the plate 2 in the center using the mounting groove 5. A hydraulic drive rod is provided in the mounting groove 5 for the clamps 6, which can drive the two clamps 6 to move towards the center at the same time, clamping and fixing the long strip of display cabinet crossbeam and decorative strip, ensuring the stability of the material and the durability of the tool during the CNC cutting process.

[0037] Furthermore, such as Figure 3 As shown, for long strip-shaped materials to be processed, foldable side support structures are provided on both sides of the platform 2. These structures include two symmetrically installed collection seats 7 on both sides of the platform 2. A telescopic rod 8 is slidably installed in the collection seat 7. A support 9 is provided at the front end of the telescopic rod 8. The support 9 adopts a roller structure, which can support and guide the display cabinet beams and decorative strips on both sides of the platform 2, preventing the hanging end of the material from being damaged by the blade due to vibration during the CNC cutting process.

[0038] In addition, such as Figures 1-7 As shown, a material pushing structure is provided on the side of the drive seat 3 located in the material discharge direction. It uses the pre-machined hole as the positioning reference for subsequent hole positions. Compared with positioning and pushing through an external measurement system, it will not generate cumulative errors and can open the hole positions more accurately.

[0039] The material pushing structure includes a linear track 10 that is bolted to the side wall of the drive seat 3. The linear track 10 is directly above the material and in the direction of the material's discharge end. A sling 11 is connected to the top of the linear track 10, and the other end of the sling 11 is connected to the drive seat 3. The sling 11 is used to reinforce and fix the linear track 10 to prevent it from tilting.

[0040] like Figures 4-7As shown, the linear track 10 is a precision ball screw guide rail, with a slide 12 driven and mounted below it. Under the signal control of the control system, the linear track 10 can precisely move and adjust the slide 12 to the corresponding position. A base 13 is further mounted below the slide 12 by screws. The base 13 consists of two side plates and a bottom plate, with a cavity inside. The two side plates also have zigzag through-type guide grooves 14. An adjusting seat 15 is movably loaded within the cavity. The adjusting seat 15 is limited and guided by the guide grooves 14. The guide grooves 14 consist of a vertical groove, a downward inclined groove, and a vertical groove from top to bottom. Limiting rods 16 are mounted on both sides of the adjusting seat 15 by screws. The limiting rod 16 is slidably installed in the guide groove 14. The direction of the adjusting seat 15 is limited by the limiting rod 16. The three-section guide groove 14 structure allows the adjusting seat 15 to tilt downward in the middle during the downward movement of the base 13. Therefore, when the slide 12 moves to the initial end of the linear track 10 closest to the drill bit 4, the adjusting seat 15 in the slide 12 moves downward. The pin 22 set on it can finally move to the bottom of the drill bit 4 and into the machined hole. Then, by using the precise movement of the slide 12 on the linear track 10, the pin 22 is inserted into the hole to push the material to move a set distance for the next fixed hole to be machined.

[0041] like Figures 6-10 As shown, a lifting spring 17 is fixedly connected to the side of the adjusting seat 15 by a pin. The other end of the lifting spring 17 is connected to the slide 12. The lifting spring 17 provides initial positioning of the adjusting seat 15, placing it at the top of the cavity of the slide 12. When the adjusting seat 15 moves downward, the lifting spring 17 extends. The connection point between the lifting spring 17 and the side of the adjusting seat 15 is located in the upper middle part of the adjusting seat 15, and the axis of the spring is parallel to the vertical section of the guide groove 14. The spring is installed on the outside of the base 13 and will not interfere with the tilting action of the adjusting seat 15.

[0042] A side block 18 is welded and fixed to the outer end of the limiting rod 16. The side block 18 is attached to the outer wall of the base 13 to further limit the adjustment seat 15. A magnetic plate 19 is clamped on the side block 18. An electromagnetic seat 20 is fixedly installed on the bottom plate of the base 13 by screws. When the electromagnetic seat 20 is energized and generates magnetic force, it can generate magnetic attraction force on the magnetic plate 19, pulling down the adjustment seat 15 and causing it to move down along the direction of the guide groove 14.

[0043] Furthermore, such as Figures 5-10As shown, a vertical lifting rod 21 is provided on the side of the adjusting seat 15 facing the drill bit 4. A pin 22 is welded and fixed to the bottom end of the lifting rod 21. After the CNC cutting tool on the drill bit 4 completes the machining of the first fixed hole on the material and is lifted away from the machining surface, the linear track 10 moves the slide 12 to a position close to the drill bit 4. Then, the adjusting seat 15 moves down in the base 13 along the direction of the guide groove 14. By setting the length and direction of the guide groove 14, the pin 22 can be inserted into the fixed hole. The pin 22 is used to push the long strip material. By presetting the dimensions of the pin 22 and the corresponding dimensions of the linear track 10, slide 12, guide groove 14 and other structures, it is ensured that the pin 22 can be guided and inserted into the fixed hole.

[0044] like Figures 8-10 As shown, both the pin 22 and the rod 21 are hollow structures. The outer diameter of the pin 22 is smaller than the diameter of the fixing hole, which facilitates the insertion of the pin 22 into the fixing hole. The pin 22 has four through slots in a ring around its circumference. An expansion block 23 is slidably installed in the through slot. When the pin 22 is inserted into the fixing hole, the expansion block 23 can move outward and expand and engage in the fixing hole, so that the pin 22 can pull the material to move. When the linear track 10 is working, the clamp 6 can release the material.

[0045] like Figure 9 , Figure 10 As shown, an inner baffle 24 is installed on the inner wall of the cavity of the expansion block 23 inside the pin 22. The bottom surface of the inner baffle 24 is provided with an inclined surface. A center seat 25 is welded and fixed in the middle of the cavity of the pin 22. A limit spring 26 is connected between the center seat 25 and the inner baffle 24. The retraction of the limit spring 26 generates a pulling force, so that the expansion block 23 is in a retracted state. A pressure block 27 is installed in the cavity of the pin 22. The pressure block 27 is located below all the inner baffles 24 and can contact the inclined surface of the inner baffles 24. A pull cable 28 is connected to the top surface of the pressure block 27. The pull cable 28 passes through the center seat 25 and enters the cavity of the pin 22 and the lifting rod 21. Finally, it passes out from the top of the lifting rod 21 and is then connected to the slide 12. The pull cable 28 is provided with a redundant length. When the adjustment seat When the adjusting seat 15 moves down along the direction of the guide groove 14 and enters the lowest vertical section of the guide groove 14, the cable 28 is in a taut state. As the adjusting seat 15 moves further down, the cable 28 can generate tension on the pressure block 27. The pressure block 27 acts on the inclined surface of the inner baffle 24, and pushes the expansion block 23 outward through the inner baffle 24. The expansion block 23 expands in the circumferential direction of the pin 22. The expansion block 23 is made of nylon material and forms an elastic fit with the inner wall of the fixing hole. Its expansion amount is controlled within the tolerance range of the fixing hole, and will not cause plastic deformation of the hole wall or enlargement of the hole diameter. Therefore, at this time, the linear track 10 can drive the material to move precisely, preparing for the cutting of the next hole position of the CNC blade. When the pin 22 moves up with the adjusting seat 15, the expansion block 23 can retract under the action of the limit spring 26.

[0046] like Figures 5-7 As shown, a photoelectric receiver 29 is installed on the side block 18 by screws. A vertical hanger 30 is installed at the end of the linear track 10 away from the drive seat 3. A first light source 31 is set at the bottom of the hanger 30. The photoelectric receiver 29 and the first light source 31 together form a set of through-beam photoelectric switches. The first light source 31 and the bottom of the guide groove 14 are at the same height. When the adjusting seat 15 moves down to the bottom of the guide groove 14, the photoelectric receiver 29 on the side block 18 and the first light source 31 are on the same straight line. The photoelectric receiver 29 can receive the light signal emitted by the first light source 31 and output a conduction signal to the control system. After receiving the signal, the control system confirms that the adjusting seat 15 has moved down to the bottom of the guide groove 14, and then controls the linear track 10 to drive the slide 12 to move precisely along the material discharge direction according to the preset hole spacing.

[0047] like Figure 11 , Figure 12 As shown, in another embodiment of the present invention, the recycling seat 7 is rotatably mounted below the platform 2. A limiting groove 32 is provided below the platform 2. A rotating shaft is provided in the middle of the recycling seat 7, and the recycling seat 7 is rotatably mounted in the limiting groove 32 by means of the rotating shaft. The tail ends of the two recycling seats 7 are hinged to traction seats 33. An electric push rod 34 is installed below the platform 2 and is connected to the traction seat 33. When the electric push rod 34 pushes the traction seat 33 downward, it can make the recycling seat 7 rotate. Then, when the telescopic rod 8 is pulled out, the support 9 on the telescopic rod 8 is raised. The two support 9s lift and support the material, and the bottom of the material is separated from the upper plane of the platform 2, reducing friction and ensuring that the pin 22 can push the material without damage. Auxiliary side guide wheels are provided on both sides of the support 9 to limit the left and right swing of the material after it is lifted, ensuring that the material always maintains a straight line during the pushing process.

[0048] A second light source 35 is provided on the side of the junction of the lower inclined groove and the lower vertical groove of the guide groove 14. The second light source 35 is fixed on the outer wall of the base 13. The photoelectric receiver 29 and the second light source 35 together form another set of through-beam photoelectric switches. When the side block 18 moves down with the adjusting seat 15, the photoelectric receiver 29 on it moves to the lower junction of the guide groove 14 and receives the light signal from the second light source 35. The photoelectric receiver 29 outputs a conduction signal, causing the electric push rod 34 to push the traction seat 33 down. The traction seat 33 drives the recovery seat 7 to rotate, causing the support 9 to tilt upward and lift the material. Meanwhile, the pin 22 continues to move downward under the guidance of the guide groove 14 and is inserted into the supported fixing hole; when the pin 22 moves upward and is pulled out, the photoelectric receiver 29 passes through the second light source 35 again and receives the light signal, outputting a conduction signal to make the electric push rod 34 pull the traction seat 33 upward, and the support 9 descends to place the material onto the plate 2. The extension and retraction direction of the electric push rod 34 is determined according to the on and off state of the electromagnetic seat 20. When the electromagnetic seat 20 is energized, the electric push rod 34 pushes the traction seat 33 downward, and when the electromagnetic seat 20 is de-energized, the electric push rod 34 pulls the traction seat 33 upward.

[0049] In use, the invention works as follows: First, the long strip of display cabinet beam or decorative strip to be processed is placed on the platform 2. The hydraulic drive rod in the mounting groove 5 drives two clamps 6 to move simultaneously towards the center, clamping and fixing the material to the platform 2. Simultaneously, based on the length of the material, telescopic rods 8 are pulled out from the recovery seats 7 on both sides of the platform 2, allowing the roller-type support 9 at the front end of the telescopic rods 8 to support both ends of the material, providing auxiliary support and guidance during drilling. The drive seat 3 is activated, and the CNC cutting tool mounted on the drill bit 4 rotates and descends with the drill bit to drill the first fixed hole. After completing the first fixed hole, the drill bit 4 rises. Reset; subsequently, the material pushing structure begins to work. The control system controls the linear track 10 to drive the slide 12 to move close to the drill bit 4, causing the base 13 and adjusting seat 15 below the slide 12 to move to the side above the machined fixing hole. At this time, the adjusting seat 15 is held at the top initial position in the cavity of the slide 12 under the elastic force of the lifting spring 17, and the pin 22 is located to the side above the machined fixing hole. Then, the electromagnetic seat 20 is energized to generate magnetic force, which generates magnetic attraction force on the magnetic plate 19 on the side block 18, pulling the adjusting seat 15 downward. The limiting rods 16 on both sides of the adjusting seat 15 slide along the zigzag guide groove 14 on the base 13. The guide groove 14 consists of a vertical groove, a downward inclined groove, and a vertical groove from top to bottom. Guided by the guide groove 14, the adjusting seat 15 first moves vertically downward, then tilts downward, and finally moves vertically downward again, allowing the pin 22 at the bottom of the lifting rod 21 to be precisely inserted into the pre-machined fixing hole. During the downward movement of the adjusting seat 15 along the guide groove 14, when the adjusting seat 15 reaches the junction of the downward inclined groove and the lower vertical groove of the guide groove 14, the photoelectric receiver 29 on the side block 18 receives a light signal exceeding a threshold value via the second light source 35 located to the side of this junction. Based on this signal, the electric push rod 34 pushes the traction seat 33 downward, causing the two recovery seats 7 to rotate. The shaft rotates, causing the support 9 on the telescopic rod 8 to tilt upwards, lifting the material from the upper plane of the plate 2 and disengaging it from the plate 2 to reduce friction. When the adjusting seat 15 continues to move downwards to the lowest end of the guide groove 14, the cable 28 connecting the adjusting seat 15 and the slide 12 is straightened. As the adjusting seat 15 moves further downwards, the cable 28 pulls the pressure block 27 upwards. The pressure block 27 contacts the inclined surface of the inner baffle 24 on the inner wall of the expansion block 23. Through the inclined surface, the four expansion blocks 23 are pushed outwards along the circumferential groove of the pin 22, causing the expansion blocks 23 to expand and engage with the inner wall of the fixing hole, thus achieving rigid locking between the pin 22 and the material.Simultaneously, when the adjusting seat 15 moves down to the lowest end of the guide groove 14, the photoelectric receiver 29 on the side block 18 and the first light source 31 at the bottom of the hanger 30 are at the same height. After receiving the light signal from the first light source 31, the photoelectric receiver 29 outputs a conduction signal to the control system. The control system confirms that the adjusting seat 15 has moved down to the lowest end of the guide groove 14, and then controls the linear track 10 to drive the slide 12 to move precisely along the material discharge direction by the set hole spacing. The slide 12 drives the material to move synchronously through the rigid locking of the pin 22 and the fixed hole. The clamp 6 releases the material before the linear track 10 works. During the process of the material being pushed, it is supported by the rolling support 9 on both sides. After the slide 12 moves into place, the electromagnetic seat 20 is de-energized and demagnetized, the lifting spring 17 retracts and pulls the adjusting seat 15 upward to reset, the pin 22 is pulled out from the fixed hole, and at the same time the cable 28 is released. When the limiting spring 26 pulls the expansion block 23 back into the pin 22 through the inner baffle 24, and the adjusting seat 15 moves upward so that the photoelectric receiver 29 passes the second light source 35 again, the photoelectric receiver 29 outputs a conduction signal. The electric push rod 34, based on the fact that the electromagnetic seat 20 is de-energized at this time, pulls the traction seat 33 upward so that the support 9 descends, placing the material onto the plate 2. The clamp 6 re-clamps the material, and the CNC blade on the drill bit 4 descends again to cut the next preset hole. This cycle of pin 22 positioning, expansion locking, precise movement of the slide 12, material pushing, pin 22 removal, and continuous drilling by the CNC blade is repeated. Using the already machined holes as the positioning reference for subsequent holes, all preset fixed holes on the material are machined sequentially. The positioning reference for each hole is the actual position of the previous machined hole, eliminating cumulative errors.

[0050] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances. Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal plate bench drill for processing metal display cases, comprising a bed, a plate table disposed on the bed, a drive seat disposed above the bed, and a drill bit disposed on the drive seat, characterized in that: The drive seat is provided with a material pushing structure on one side of the material discharge direction. The material pushing structure includes a linear track arranged along the material discharge direction, a slide mounted on the linear track, and a pin provided below the slide. When the pin moves with the slide to the position corresponding to the machined hole, it can bypass the drill bit and insert downward into the machined hole to lock with the hole. The slide drives the material to move synchronously a preset distance along the discharge direction through the locking of the pin with the machined hole. The plate is equipped with a clamp for clamping and releasing materials. The clamp releases the material before the slide moves the material and clamps the material after it moves into place, so as to use the machined holes as the positioning reference for subsequent holes to realize the continuous processing of multiple holes on the material.

2. The metal plate bench drill for processing metal display cases according to claim 1, characterized in that: A base is installed below the slide block, and the base has a cavity and an adjustable seat is movably mounted thereon. The pin is set on the adjustable seat. The base sidewall is provided with a zigzag guide groove consisting of a vertical groove, a downward inclined groove and a vertical groove connected in sequence. The limiting rods on both sides of the adjusting seat slide through the guide groove, so that when the adjusting seat moves down, it moves along a three-segment trajectory of vertical, inclined and vertical. The pin moves from above the machined hole to directly above and is then inserted into the hole.

3. The metal plate bench drill for processing metal display cases according to claim 2, characterized in that: A lifting spring is connected to the side of the adjusting seat, and the other end of the lifting spring is connected to the slide block, so that the adjusting seat is kept in the initial position at the top of the cavity; A magnetic plate is installed on the side block at the outer end of the limiting rod, and an electromagnetic seat is installed on the base plate. When the electromagnetic seat is energized, it generates a magnetic attraction force on the magnetic plate, pulling the adjusting seat down along the guide groove.

4. A benchtop drilling machine for processing metal display cases according to claim 3, characterized in that: The pin is mounted on the adjusting seat via a hanger rod. The pin and hanger rod are hollow, and the outer diameter of the pin is smaller than the hole diameter. The pin has multiple through slots in its circumference and an expansion block is slidably installed thereon. The pin cavity is provided with a center seat and a limiting spring connecting the inner baffle of the expansion block and the center seat.

5. A benchtop drilling machine for processing metal display cases according to claim 4, characterized in that: Below the expansion block is a pressure block that matches its inclined surface. The top of the pressure block is connected to the slide block after passing through the center seat, pin, and hanger cavity via a cable. The cable has a redundant length. When the adjusting seat moves down to the lowest vertical section of the guide groove, the cable is straightened. The adjusting seat continues to move down, causing the cable to pull the pressure block up. Through the inclined surface, the expansion block is pushed to extend radially along the through groove and engage with and lock against the inner wall of the machined hole.

6. A benchtop drilling machine for processing metal display cases according to claim 5, characterized in that: The platform is symmetrically provided with foldable side support structures on both sides, which include a recycling seat rotatably installed under the platform and a telescopic rod slidably installed in the recycling seat; The front end of the telescopic rod is equipped with a roller support. The roller axis is perpendicular to the length of the material. After the telescopic rod is pulled out, the support supports the material at both ends and provides rolling support when the material is pushed.

7. A benchtop drilling machine for processing metal display cases according to claim 6, characterized in that: The straight track is provided with a hanger at the end and a first light source installed at its bottom. A photoelectric receiver is provided below the slide block. The photoelectric receiver and the first light source form a through-beam photoelectric switch. When the adjusting seat moves down to the bottom of the guide groove, the photoelectric receiver receives the light signal from the first light source and outputs a conduction signal to the control system. After receiving the signal, the control system controls the linear track to drive the slide to move a preset distance.

8. A benchtop drilling machine for processing metal display cases according to claim 7, characterized in that: The recycling seats are rotatably installed in the limiting groove below the platform via a rotating shaft. The tail ends of the two recycling seats are hinged to traction seats. The electric push rod below the platform is connected to the traction seat. When the electric push rod pushes the traction seat to move down, the recycling seat rotates, causing the support to tilt upward and lift the material off the platform. When the electric push rod pulls the traction seat to move up, the support descends and lowers the material onto the platform.

9. A benchtop drilling machine for processing metal display cases according to claim 8, characterized in that: A second light source is provided on the side of the junction between the lower inclined groove of the guide groove on the side wall of the base and the lower vertical groove. When the photoelectric receiver moves down to the junction, it receives the light signal of the second light source. The electric push rod pushes the traction seat down according to the signal to lift the material. The extension and retraction direction of the electric push rod is determined and controlled according to the on and off state of the electromagnetic seat.

10. A benchtop drilling machine for processing metal display cases according to claim 9, characterized in that: The support is equipped with auxiliary side guide wheels on both sides. After the material is lifted, the auxiliary side guide wheels restrict its left and right swing, ensuring that the material maintains linear motion during the pushing process.

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