A multi-head drilling equipment for plate processing based on gantry mobile synchronous working

Abstract

The present application relates to plate processing equipment technical field, specifically put forward a kind of based on gantry mobile synchronous work's plate processing with multi-head drilling equipment, including rack assembly;Through type conveying platform;Gantry;The present application is clamped and transported to plate by gripper assembly, in the transfer process of plate from upper drilling station to lower drilling station, motor drives screw rod rotation, under the constraint of limiting hole, limiting block moves downward, overall lifting gripper assembly, while clamping piece synchronously moves downward same distance, ensure that plate is always in the same height position during transfer process between station;At the same time, under the cooperation of guide plate and guide table inclined surface, the horizontal position of gripper assembly is synchronously finely adjusted.The composite adjustment of height and horizontal position effectively solves the technical problems that hole position dislocation and groove position deviation caused by repeated clamping positioning when existing equipment flips plate or station shifts, and effectively guarantees machining precision and product yield.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing equipment technology, and specifically proposes a multi-head drilling device for sheet metal processing based on synchronous gantry movement. Background Technology

[0002] Currently, in the processing of panel furniture, decorative panels, and composite panels, drilling, grooving, and cutting are the core processes in production. With the rapid development of industries such as whole-house customization and smart homes, the market is placing increasingly higher demands on the processing efficiency, precision, and automation of panel processing equipment. Existing panel processing equipment mainly includes CNC drilling centers, CNC panel saws, and CNC machining centers. Based on their structural form, they are mainly divided into two categories: one is gantry-type equipment with a fixed worktable and a moving spindle; the other is a feeding type equipment with a fixed spindle and a moving worktable. Based on the processing method, they can also be divided into single-sided processing equipment and double-sided processing equipment.

[0003] Most existing gantry-type sheet metal processing equipment is only equipped with an upper processing spindle, which can only perform drilling and grooving on the upper surface of the sheet. When processing is required on the lower surface of the sheet (such as pre-embedded holes, bottom grooving, through-hole processing, etc.), the sheet must be flipped and clamped for a second time. Flipping not only increases labor costs and auxiliary time, but also introduces repeated positioning errors, which can easily lead to quality defects such as misalignment of upper and lower holes and slot offset, seriously affecting the processing accuracy and consistency of the product. Although a few existing machines have attempted to set a lower processing spindle under the conveyor platform, the lower spindle is usually fixed in a specific position on the conveyor platform and cannot move synchronously with the gantry, which restricts its processing position and prevents it from achieving true synchronous and coordinated operation with the upper spindle, resulting in poor processing flexibility.

[0004] Therefore, there is an urgent need for a multi-head drilling machine for sheet metal processing that is simple to operate and has good processing flexibility, based on synchronous gantry movement. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a multi-head drilling device for sheet metal processing based on synchronous gantry movement, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention employs the following technical solution: a multi-head drilling device for sheet metal processing based on synchronous gantry movement, comprising a frame assembly; a through-type conveyor platform, mounted on the frame assembly, employing a front-to-back through-type structure for continuous feeding, processing, and output of sheet metal; a gantry frame, spanning above the through-type conveyor platform, capable of reciprocating along the sheet metal feed direction; an upper drilling assembly, mounted on the gantry frame, comprising multiple upper processing spindles for drilling and grooving the upper surface of the sheet metal; a lower drilling assembly, mounted in the hollow processing area below the through-type conveyor platform, comprising multiple lower processing spindles for drilling and grooving the lower surface of the sheet metal; and a gripper assembly, mounted on the frame assembly, for gripping and conveying the sheet metal between processing stations and for positioning and gripping; the gripper assembly includes a movable positioning plate disposed on the... On one side of the through-type conveyor platform, a mounting frame is provided above the through-type conveyor platform. A threaded rod is rotatably mounted on the surface of the mounting frame. A limiting block is mounted on the lower end of the threaded rod, abutting against the through-type conveyor platform. A mounting plate is threadedly mounted on the surface of the threaded rod. The through-type conveyor platform includes an external fixed frame and a trapezoidal guide platform installed inside. A guide plate with the same slope as the guide platform is fixedly mounted on the surface of the mounting plate. Rollers are equidistantly mounted on the top and sides of the guide platform. The guide plate abuts against the inclined rollers for oblique position adjustment. A retractable adjusting wheel is installed below the mounting frame. A clamping component for clamping the plate is threadedly mounted on the threaded rod. The rotation of the threaded rod drives the limiting block to move axially. The guide plate rolls along the surface of the rollers to adjust the lateral position and longitudinal height. The clamping component adjusts the longitudinal height under the action of the threaded rod.

[0007] Preferably, a gear is fixedly mounted on the surface of each threaded rod, and the four gears are connected by a toothed belt. A protective cover is installed at the end of each threaded rod, and both the gear and the toothed belt are installed inside the protective cover. A motor is mounted on the surface of the protective cover, and the motor is used to drive the rotation of one of the threaded rods.

[0008] Preferably, the surface of the mounting bracket has a rectangular limiting hole, the limiting block is movably installed inside the limiting hole, and the limiting block is threadedly installed on the surface of the threaded rod.

[0009] Preferably, the clamping member and the limiting block are exactly the same as the installation pitch of the threaded rod.

[0010] Preferably, the limiting block is located between adjacent rollers.

[0011] Preferably, the lower surface of the mounting bracket is provided with a transverse groove, and the guide plate passes through the interior of the transverse groove.

[0012] The above technical solution has the following advantages or beneficial effects:

[0013] This invention provides a multi-head drilling machine for sheet metal processing based on synchronous gantry movement. The machine uses a gripper assembly to clamp and transport the sheet metal. During the transfer of the sheet metal from the upper drilling station to the lower drilling station, a motor drives a threaded rod to rotate. Under the constraint of the limiting holes, the limiting block moves downward, lifting the gripper assembly as a whole. Simultaneously, the gripping components move downward the same distance, ensuring the sheet metal remains at the same height throughout the transfer between stations. Simultaneously, the horizontal position of the gripper assembly is finely adjusted through the cooperation of the guide plate and the inclined surface of the guide table. This combined adjustment of height and horizontal position effectively solves the technical problems of hole misalignment and slot displacement caused by repeated clamping and positioning during sheet metal flipping or station transfer in existing equipment. It avoids the cumulative positioning errors introduced by multiple clamping operations, ensuring the sheet metal maintains a precise positional relationship with the machining spindle after transfer from the upper drilling station to the lower drilling station. The consistency and alignment accuracy of the upper and lower drilling positions are significantly improved. High-precision positioning can be achieved without manual intervention, effectively guaranteeing processing accuracy and product yield. Attached Figure Description

[0014] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings, which are not intentionally drawn to scale; the focus is on illustrating the spirit of the invention.

[0015] Figure 1 This is a three-dimensional structural diagram of a multi-head drilling device for sheet metal processing based on synchronous gantry movement, provided by the present invention.

[0016] Figure 2 yes Figure 1 A frontal view of the structural plan;

[0017] Figure 3 This is a three-dimensional structural diagram of a through-type conveyor platform;

[0018] Figure 4 This is a three-dimensional structural diagram of the gripper assembly;

[0019] Figure 5 yes Figure 4 A three-dimensional structural diagram from another perspective;

[0020] Figure 6 This is a schematic diagram of the planar structure of the guide platform;

[0021] Figure 7 This is a three-dimensional structural diagram showing the position of the adjusting wheel;

[0022] Figure 8This is a schematic diagram of the connection structure between gears and toothed belts.

[0023] Figure 9 yes Figure 8 A three-dimensional structural diagram from another perspective.

[0024] In the diagram: 1. Frame assembly; 2. Through-type conveyor platform; 21. Fixed frame; 22. Guide table; 23. Roller; 3. Gantry frame; 4. Upper drill assembly; 5. Lower drill assembly; 6. Grip assembly; 61. Positioning plate; 62. Mounting bracket; 63. Threaded rod; 64. Limit block; 65. Mounting plate; 66. Guide plate; 67. Adjusting wheel; 7. Clamping component; 8. Gear; 9. Toothed belt; 10. Protective cover; 11. Motor; 12. Limit hole; 13. Horizontal groove. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1-3 As shown, the present invention provides a multi-head drilling device for sheet metal processing based on synchronous gantry movement, including a frame assembly 1, a through-type conveyor platform 2, a gantry frame 3, an upper drilling assembly 4, a lower drilling assembly 5, and a gripper assembly 6.

[0028] The frame assembly 1 adopts an integral welded heavy-duty bed structure, serving as the fixed load-bearing foundation for the entire equipment and ensuring its rigidity and stability during high-speed machining. The frame assembly 1 is welded from high-strength steel and undergoes aging treatment to eliminate welding stress, ensuring no deformation during long-term use. The frame assembly 1 extends along the plate feed direction (i.e., the Y-axis direction), and its length is determined based on the maximum size of the plate being processed and the number of processing stations. A longitudinal linear guide rail extending along the Y-axis is mounted on the top of the frame assembly 1 for mounting the gantry 3.

[0029] like Figure 1 , Figure 3 and Figure 6As shown, the through-feed conveyor platform 2 is installed on the frame assembly 1 and adopts a front-to-back through-type structure, that is, the sheet metal is fed in from the front end, passes through the processing area, and is discharged from the rear end, which is used to realize the continuous feeding, processing and discharge of sheet metal. The through-feed conveyor platform 2 includes an external fixed frame 21 and a guide table 22 installed inside the fixed frame 21. The fixed frame 21 is a rectangular frame structure and is fixedly installed on the upper surface of the frame assembly 1. The fixed frame 21 is continuous along the Z-axis. The interior of the fixed frame 21 forms a hollow area for installing the guide table 22. The lower drilling assembly 5 is installed below the fixed frame 21.

[0030] The guide platform 22 is fixedly installed inside the fixed frame 21 and extends along the Y-axis. The cross-section of the guide platform 22 is trapezoidal, and in this embodiment, it is a right trapezoid, that is, the left side of the guide platform 22 is an inclined guide slope. In this embodiment, the angle between the inclined surface of the guide platform 22 and the horizontal plane is in the range of 45° to 90°, preferably 60°.

[0031] Multiple rollers 23 are equidistantly mounted on the top surface and inclined surface of the guide table 22. The rollers 23 are rotatably mounted on the guide table 22 via bearing seats and can rotate freely around their own axes. The rollers 23 located on the top surface of the guide table 22 are arranged in one or more rows equidistantly along the Y-axis. The upper surface of the rollers 23 is slightly higher than the top surface of the guide table 22 to support the plate and reduce frictional resistance during plate conveying. The rollers 23 located on the sides of the guide table 22 are also equidistantly arranged along the Y-axis. The outer circumferential surface of the rollers 23 slightly protrudes from the inclined surface for rolling contact with the guide plate 66. The distance between adjacent rollers 23 is equal.

[0032] The gantry frame 3 spans above the through-type conveyor platform 2 and includes a crossbeam and columns fixed to both ends of the crossbeam. The crossbeam extends along the width direction (i.e., the X-axis direction) of the through-type conveyor platform 2, and a gap is left between the lower surface of the crossbeam and the upper surface of the through-type conveyor platform 2 for the material to pass through. A linear guide slider is fixedly installed at the bottom of the column, which slides in engagement with the longitudinal linear guide rail on the frame assembly 1.

[0033] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the gantry 3 is driven by a gantry servo motor, and the upper drilling assembly 4 is mounted on the crossbeam of the gantry 3, including multiple upper machining spindles, preferably five in this embodiment. The five upper machining spindles are mounted on the front side of the crossbeam via linear guide sliders, and each upper machining spindle can move independently along the transverse feed (i.e., the X-axis direction) of the crossbeam. Each upper machining spindle is driven by an independent transverse servo motor and a lead screw and nut pair, achieving precise transverse positioning.

[0034] Each upper machining spindle includes a spindle body, an electric spindle, and a drill bit. The spindle body slides against a crossbeam via a linear guide slider. The electric spindle is vertically mounted on the spindle body, with its output end extending downwards and housing the drill bit. The electric spindle is driven by a spindle servo motor, which rotates the drill bit at high speed. Simultaneously, a vertical feed cylinder or a vertical servo motor drives the electric spindle downwards in the vertical direction (i.e., the Z-axis direction), completing the drilling and grooving of the upper surface of the sheet metal. The upper drilling assembly 4 is also equipped with an upper dust hood and a dust inlet. The upper dust hood is installed at the lower end of the electric spindle, surrounding the drill bit, while the dust inlet is connected to an external dust collection system via a dust collection pipe. The upper dust hood moves synchronously with the electric spindle to collect dust generated during drilling.

[0035] The lower drilling assembly 5 is installed in the hollow processing area below the through-type conveyor platform 2, and is fixedly installed inside the frame assembly 1 or the fixed frame 21, located below the guide table 22. The lower drilling assembly 5 includes multiple lower processing spindles, preferably five in this embodiment, with the five lower processing spindles corresponding one-to-one with the five upper processing spindles.

[0036] Each machining spindle includes a spindle body, an electric spindle, and a drill bit. The spindle body slides with a transverse guide rail fixed inside the frame assembly 1 via a linear guide slider, allowing each machining spindle to move independently along the X-axis. The electric spindle is vertically mounted on the spindle body, with its output end extending upwards and housing the drill bit. The electric spindle is driven by a spindle servo motor, which rotates the drill bit at high speed. Simultaneously, a vertical feed cylinder or a vertical servo motor drives the electric spindle to feed upwards in the vertical direction (i.e., the Z-axis direction). The drill bit passes through the clearance holes on the guide table 22 or the hollowed-out area on the side of the guide table 22, completing drilling and grooving from below the sheet metal.

[0037] The bottom drilling assembly 5 is also equipped with a bottom dust hood and a dust collection bag. The bottom dust hood is installed on the upper end of the electric spindle and surrounds the drill bit. The dust collection bag is connected to an external dust collection system through a dust collection pipe. The bottom dust hood moves synchronously with the electric spindle to collect machining dust from the bottom. The five upper machining spindles of the upper drilling assembly 4 correspond one-to-one with the five lower machining spindles of the bottom drilling assembly 5.

[0038] The gripper assembly 6 is mounted on the frame assembly 1 and located on one side of the through-type conveyor platform 2. It is used to grip and transport the sheet metal between various processing stations and to position and hold it. The gripper assembly 6 includes a mounting bracket 62, a threaded rod 63, a limit block 64, a mounting plate 65, a guide plate 66, an adjusting wheel 67, a positioning plate 61, a gripping component 7, and a drive mechanism.

[0039] Mounting frame 62 is positioned above the through-type conveyor platform 2, above the fixed frame 21. Mounting frame 62 is a rectangular frame structure extending along the Y-axis. A clamping member 7 for holding and fixing the plate is mounted on the upper surface of mounting frame 62. Four mounting holes, each circular, are spaced apart along the Z-axis on mounting frame 62, with bearings installed on their inner walls for rotating the threaded rod 63. A through transverse groove 13 is provided on the lower surface of mounting frame 62 for the guide plate 66 to pass through and for lateral movement. Wear-resistant bushings are installed on both sides of the transverse groove 13 to reduce friction between the guide plate 66 and the transverse groove 13.

[0040] The surface of the mounting bracket 62 is also provided with four rectangular limiting holes 12. The limiting holes 12 are connected to the interior of the circular holes. The limiting holes 12 extend vertically along the Z-axis. The four limiting holes 12 are respectively set to correspond one-to-one with the four mounting holes. The limiting holes 12 are located directly below the mounting holes. The inner wall of the limiting holes 12 is a smooth plane for movable mounting of the limiting block 64.

[0041] Four threaded rods 63 are vertically arranged and are rotatably installed in the four mounting holes of the mounting bracket 62. The lower end of each threaded rod 63 is rotatably connected to the mounting bracket 62 through a bearing seat. The threaded rod 63 can rotate freely around its own axis, but its axial position is fixed relative to the mounting bracket 62.

[0042] The limiting block 64 is movably installed inside the limiting hole 12. The outer circumference of the limiting block 64 is adapted to the inner wall size of the limiting hole 12. The limiting block 64 can slide up and down along the Z-axis within the limiting hole 12 but cannot rotate around the Z-axis. A threaded through hole is provided in the middle of the limiting block 64, through which it engages with the threaded rod 63. The lower end of the limiting block 64 extends from the lower end of the limiting hole 12 and abuts against the upper surface of the guide table 22 of the through-type conveyor platform 2. The lower surface of the limiting block 64 is flat and is located in the gap between two adjacent rollers 23.

[0043] Mounting plate 65 is also configured as a frame structure and is horizontally positioned above mounting bracket 62. Mounting plate 65 has four threaded through holes, which are threaded into four threaded rods 63 respectively. When the four threaded rods 63 rotate synchronously in the same direction, mounting plate 65 moves along the axial direction of the threaded rods 63. At this time, since guide plates 66 are fixedly installed on the lower surface of mounting plate 65, there are two guide plates 66. The guide plates 66 pass through the transverse groove 13 on the lower surface of mounting bracket 62 and extend downward to the inclined surface of guide table 22. The inclined surface of guide plate 66 abuts against roller 23.

[0044] like Figure 5 , Figures 7-9As shown, the clamping member 7 is threaded onto the surface of the threaded rod 63, specifically located above the mounting plate 65. The mounting pitch of the clamping member 7 and the limiting block 64 is exactly the same. When the threaded rod 63 rotates, the clamping member 7 and the limiting block 64 move the same distance and in the same direction along the axial direction of the threaded rod 63. The rotation of the threaded rod 63 will cause the limiting block 64 to move downwards simultaneously, and the entire clamping assembly 6 will move upwards. At this time, the clamping member 7 moves downwards by the same distance to ensure that the plate remains at the same height.

[0045] To prevent positional deviations caused by wear during movement, adjusting wheels 67 are installed below the mounting frame 62. The upper end of the adjusting wheel 67 is fixedly mounted on the lower surface of the mounting frame 62, and the lower end of the adjusting wheel 67 is retractable, pressing against the upper surface of the through-feed conveyor platform 2. The adjusting wheel 67 is pneumatically or hydraulically driven, and its extension length can be adjusted as needed. Adjusting the lateral movement of the gripper assembly 6 reduces wear and ensures more accurate positioning and higher precision during processing. Multiple adjusting wheels 67 are spaced apart along the X-axis (preferably four in this embodiment), each corresponding to one of the four threaded rods 63. During the lateral movement of the gripper assembly 6, the adjusting wheels 67 always maintain a pressing and positioning position on the through-feed conveyor platform 2.

[0046] The positioning plate 61 is movably mounted on the right side of the through-type conveyor platform 2, and is positioned opposite to the clamping member 7. Driven by a positioning cylinder, the positioning plate 61 can reciprocate along the X-axis to position one side of the sheet material. The positioning surface of the positioning plate 61 is provided with an anti-slip pad to increase friction with the edge of the sheet material and prevent slippage during positioning.

[0047] A gear 8 is fixedly mounted on the upper surface of each threaded rod 63. The four gears 8 are connected by a toothed belt 9 to achieve synchronous rotation of the four threaded rods 63. The toothed belt 9 is a synchronous toothed belt, and its inner surface has teeth that match the gear 8 to ensure no slippage during transmission. A protective cover 10 is installed at the upper end of the threaded rod 63. Both the gear 8 and the toothed belt 9 are installed inside the protective cover 10, which serves as a dustproof and safety protection. The inner wall of the protective cover 10 is lined with a sound-absorbing material layer to reduce the noise generated when the gear 8 and toothed belt 9 mesh. A motor 11 is mounted on the upper surface of the protective cover 10. The output shaft of the motor 11 is connected to the upper end of one of the threaded rods 63 via a coupling. The motor 11 is a servo motor, used to drive the rotation of one of the threaded rods 63. Through the transmission of the gears 8 and toothed belt 9, it drives the other three threaded rods 63 to rotate synchronously, ensuring that the speed and direction of the four threaded rods 63 are completely consistent.

[0048] Work process:

[0049] The gripper assembly 6 is located at the feed end of the through-type conveyor platform 2 and is in the waiting position; the adjusting wheel 67 is in the retracted state, that is, the lower end of the adjusting wheel 67 is retracted and does not contact the upper surface of the through-type conveyor platform 2; the limiting block 64 is located at the upper limit position in the limiting hole 12, leaving a gap between it and the upper surface of the guide table 22. This gap is greater than the maximum stroke required for subsequent height adjustment, ensuring that the limiting block 64 has sufficient downward movement space; the gantry 3 is located behind the feed end of the through-type conveyor platform 2 and behind the gripper assembly 6, waiting for the plate to be sent into the processing area; each of the upper processing spindles of the upper drilling assembly 4 is in the raised position, that is, the electric spindle is located at the upper limit position of its vertical stroke, and the drill bit maintains a safe distance from the plate conveying path; each of the lower processing spindles of the lower drilling assembly 5 is in the lowered position, that is, the electric spindle is located at the lower limit position of its vertical stroke, and the drill bit is completely retracted to below the guide table 22, maintaining a clearance distance from the plate conveying path.

[0050] Before entering the drilling station, the processing position is predetermined. After the sheet metal is conveyed to the processing station by the clamping assembly 6, the gantry 3 is driven by the gantry servo motor to move along the Y-axis to the drilling station. The gantry servo motor drives the column of the gantry 3 to move along the longitudinal linear guide rail on the frame assembly 1. The crossbeam of the gantry 3 spans above the through-type conveyor platform 2, and a safe distance is left between the lower surface of the crossbeam and the upper surface of the sheet metal for the drilling assembly 4 to feed and process. The five upper processing spindles of the drilling assembly 4 are driven by the transverse servo motor and the lead screw and nut pair, and move independently along the linear guide rail on the front side of the crossbeam along the X-axis. The transverse servo motor of each upper processing spindle receives the position command from the CNC system and drives the corresponding upper processing spindle to move along the X-axis to its respective target hole position. The five upper processing spindles can move to different X-axis coordinate positions to correspond to different hole positions on the upper surface of the sheet metal.

[0051] After each upper machining spindle moves into position along the X-axis, the spindle servo motor starts, driving the electric spindle to rotate at high speed. The spindle speed is determined according to the machining process parameters, including the material of the sheet metal, the drill bit diameter, the drilling depth, and the feed rate. Once the electric spindle reaches the predetermined speed, the vertical feed cylinder or vertical servo motor drives the electric spindle to feed downwards along the Z-axis. The vertical feed mechanism drives the electric spindle downwards at a predetermined feed rate, and the drill bit contacts the upper surface of the sheet metal and gradually drills into the interior of the sheet metal. After the electric spindle feeds downwards to the predetermined depth, the drilling of one hole is completed. The vertical feed mechanism drives the electric spindle upwards along the Z-axis back to the initial height position, preparing for the machining of the next hole. During the downward drilling process of the upper machining spindle, the upper dust suction hood moves downwards synchronously with the electric spindle. The upper dust suction hood is a ring-shaped hood installed at the lower end of the electric spindle, surrounding the drill bit. The inner cavity of the upper dust suction hood is connected to the dust suction pipe through the dust suction port, and the other end of the dust suction pipe is connected to an external dust suction system. The external vacuum system generates negative pressure, creating a negative pressure zone inside the upper vacuum hood through the vacuum pipes and suction ports. Dust generated during drilling is drawn into the upper vacuum hood under this negative pressure, then enters the external vacuum system through the vacuum pipes for filtration and collection, achieving real-time dust removal during the processing.

[0052] Next, it moves to the lower drilling station and moves along the rollers 23 on the surface of the through conveyor platform 2. When it moves to the position of the lower drilling assembly 5, the motor 11 starts and drives the corresponding threaded rod 63 to rotate. Through the transmission action of the gear 8 and the toothed belt 9, all the threaded rods 63 rotate synchronously. At this time, under the action of the limiting hole 12, the limiting block 64 moves downward and lifts the gripper assembly 6 as a whole. The adjusting wheel 67 moves downward synchronously. Under the action of the guide plate 66, the horizontal position of the gripper assembly 6 is finely adjusted, and the height is also adjusted at the same time. In order to ensure that the height is always in the same position, the clamping part 7 moves downward synchronously. Under the same pitch, the height of movement can be kept consistent, thereby making the machining accuracy higher.

[0053] At this time, the lower drill assembly 5 is processed, and the process is the same as that of the upper drill assembly 4.

[0054] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" 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 will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a manner common to the art; any possible variations and modifications made by those skilled in the art without departing from the technical solution of the present invention, or equivalent embodiments with equivalent changes, do not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A multi-head drilling device for sheet metal processing based on gantry-type synchronous operation, characterized in that: include Rack assembly; The through-type conveyor platform is installed on the frame assembly and adopts a front-to-back through structure for continuous feeding, processing and delivery of sheet metal. The gantry frame is positioned above the through-type conveyor platform and can reciprocate along the feeding direction of the plate. The upper drilling assembly, mounted on the gantry, includes multiple upper machining spindles for drilling and grooving the upper surface of the sheet metal. The lower drilling assembly is installed in the hollow processing area below the through conveyor platform, and includes multiple lower processing spindles for drilling and grooving the lower surface of the sheet metal. The gripper assembly is mounted on the frame assembly and is used to grip and transport the sheet metal between various processing stations and to perform positioning and gripping. The gripper assembly includes a movable positioning plate disposed on one side of the through-type conveyor platform. A mounting frame is disposed above the through-type conveyor platform. A threaded rod is rotatably mounted on the surface of the mounting frame. A limiting block that abuts against the through-type conveyor platform is mounted on the lower end of the threaded rod. A mounting plate is threadedly mounted on the surface of the threaded rod. The through-type conveyor platform includes an external fixed frame and an internal trapezoidal guide platform. The surface of the mounting plate is fixedly equipped with guide plates with the same slope as the guide platform. Rollers are installed at equal intervals on the top and sides of the guide platform. The guide plates abut against the rollers on the inclined surface for oblique adjustment of position. Retractable adjustment wheels are installed below the mounting frame. The threaded rod is threaded with a clamping component for clamping the plate. The rotation of the threaded rod drives the limiting block to move axially, and the guide plate rolls along the surface of the roller to adjust the lateral position and longitudinal height. The clamping part adjusts the longitudinal height under the action of the threaded rod.

2. The multi-head drilling equipment for sheet metal processing based on gantry-driven synchronous operation according to claim 1, characterized in that: Each of the threaded rods has a gear fixedly mounted on its surface. The four gears are connected by a toothed belt. A protective cover is mounted on the end of each threaded rod. Both the gear and the toothed belt are installed inside the protective cover. A motor is mounted on the surface of the protective cover. The motor is used to drive the rotation of one of the threaded rods.

3. The multi-head drilling equipment for sheet metal processing based on gantry-driven synchronous operation according to claim 1, characterized in that: The mounting bracket has a rectangular limiting hole on its surface, and the limiting block is movably installed inside the limiting hole. The limiting block is threaded onto the surface of the threaded rod.

4. The multi-head drilling equipment for plate processing based on gantry-driven synchronous operation according to claim 3, characterized in that: The clamping component and the limiting block are exactly the same as the installation pitch of the threaded rod.

5. A multi-head drilling device for sheet metal processing based on gantry-driven synchronous operation as described in claim 1, characterized in that: The limiting block is located between adjacent rollers.

6. The multi-head drilling equipment for sheet metal processing based on gantry-driven synchronous operation according to claim 1, characterized in that: The lower surface of the mounting bracket has a horizontal groove, and the guide plate passes through the interior of the horizontal groove.

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