Drilling machine for hardware mold machining

Abstract

The invention relates to the technical field of mold drilling, in particular to a hardware mold machining drilling machine which comprises a fixing plate and further comprises a replacement device, the replacement device is connected to the lower end of the fixing plate and comprises a cylindrical rod rotationally connected to the lower end of the fixing plate, and an intermittent driving mechanism is connected to the cylindrical rod. A circular plate is mounted at the lower end of the cylindrical rod, and a plurality of drilling mechanisms which are uniformly distributed in the circumferential direction are connected to the circular plate. According to the replacement device, automatic replacement of drill bits required by drilling can be achieved, all the drill bits required to be used need to be installed at the lower ends of the multiple rotating branch chains before drilling, the drill bits do not need to be manually installed and disassembled for multiple times during drilling, the drilling continuity of the hardware mold plate is ensured, and the drilling efficiency is improved. And the drilling efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of mould drilling, in particular to a drilling machine for processing hardware moulds. Background Art

[0002] Hardware mold plates are mold components used to manufacture various metal products, usually including stamping molds, stretching molds, etc. Hardware mold plates are usually provided with holes of different diameters. These holes are mainly positioning holes, guide post holes, push rod holes, cooling holes, fixing holes, balancing holes, sensor mounting holes, exhaust holes, mounting holes, etc. The holes of different diameters on the hardware mold plates have very high requirements for processing performance, so they are usually processed by CNC drilling equipment.

[0003] When drilling holes of various diameters on a hardware mold plate, the mold is usually first fixed on the worktable of the CNC drilling equipment, and then the drill bit to be used is installed on the driving device of the CNC drilling equipment, and then the driving device is started. The driving device drives the drill bit to rotate and drill the hardware mold plate, and then the drill bit on the driving device is replaced, and the hardware mold plate is drilled with different diameters. This step is repeated until all holes of the required diameter are drilled. When replacing the drill bit, the existing CNC drilling equipment usually replaces it manually, and the replacement is multiple and the replacement operation is slow, which reduces the drilling efficiency of the hardware mold plate. Although CNC drilling equipment that can automatically replace the drill bit can also be used for drilling, when drilling with the CNC drilling equipment with replaceable drill bits, the unused drill bit will also move with the drill bit in use, which is easy to interfere with the hardware mold plate. Summary of the invention

[0004] Based on this, it is necessary to provide a drilling machine for hardware mold processing, aiming to solve the problems caused by drilling holes in the mold in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme to achieve the purpose: a drilling machine for hardware mold processing, including: a fixing plate.

[0006] It also includes a replacement device, which is connected to the lower end of the fixed plate. The replacement device includes a cylindrical rod rotatably connected to the lower end of the fixed plate, an intermittent driving mechanism is connected to the cylindrical rod, a circular plate is installed at the lower end of the cylindrical rod, and a plurality of circumferentially evenly distributed drilling mechanisms are connected to the circular plate.

[0007] The drilling mechanism includes a lifting branch chain connected to the circular plate, the lower end of the lifting branch chain is connected to a lifting plate, the lifting plate is connected to a rotating branch chain, the lower end of the rotating branch chain is installed with a connecting module, the connecting module is detachably installed with a drill bit, and the drill bit is provided with different models.

[0008] It also includes a driving device, which is connected to the lower end of the fixed plate. The driving device includes a rectangular frame installed at the lower end of the fixed plate, a first driving motor is slidably connected in the rectangular frame, a hydraulic push rod is installed on the left side of the first driving motor, the upper end of the hydraulic push rod is fixedly connected to the left frame wall of the rectangular frame, and a clamping mechanism is connected to the output shaft of the first driving motor.

[0009] The clamping mechanism comprises a columnar rod installed at the lower end of the output shaft of the first driving motor, and two clamping rods symmetrically distributed along the axis of the columnar rod are installed on the annular surface of the columnar rod.

[0010] According to an embodiment of the present invention, the replacement device further comprises a limiting circular plate installed on the surface of the cylindrical rod, and a plurality of limiting holes evenly distributed in the circumferential direction are formed on the limiting circular plate.

[0011] According to an embodiment of the present invention, the driving device further comprises four positioning rods distributed in a rectangular shape and installed at the lower end of the first driving motor, and a limiting mechanism is connected to the top of the first driving motor.

[0012] According to an embodiment of the present invention, the intermittent drive mechanism includes an intermittent groove wheel installed on the surface of the cylindrical rod, a second drive motor is installed on the lower end of the fixed plate through a motor seat, a rotating plate is installed on the output shaft of the second drive motor, and a toggle rod is installed on the side of the lower end of the rotating plate away from the output shaft of the second drive motor.

[0013] According to an embodiment of the present invention, the clamping mechanism further comprises a rectangular groove formed at the lower end of the columnar rod, and four vertical side walls of the rectangular groove are connected to rebound branches.

[0014] According to an embodiment of the present invention, the limiting mechanism includes a sliding opening opened on the right side wall of the rectangular frame, an L-shaped plate is installed on the upper end of the first drive motor, the horizontal section of the L-shaped plate is slidably matched with the sliding opening, and a limiting column is installed on the lower end of the horizontal section of the L-shaped plate.

[0015] According to an embodiment of the present invention, the lifting branch chain includes a rectangular rod that slides through the circular plate and is in a vertical state, a rectangular plate is installed on the upper end of the rectangular rod, a return spring sleeved on the rectangular rod is installed between the lower end of the rectangular plate and the upper end of the circular plate, the lower end of the rectangular rod is fixedly connected to the lifting plate, and a baffle located below the circular plate is installed on the surface of the rectangular rod.

[0016] According to an embodiment of the present invention, the rotating branch chain includes a rotating tube rotatably connected to the lifting plate through a bearing, the lower end of the rotating tube is fixedly connected to the connecting module, a rectangular block is installed on the upper end of the bottom wall of the rotating tube, and arc grooves are provided on the four vertical side walls of the rectangular block. The upper end of the rotating tube is provided with two clamping openings symmetrically distributed along the axis of the rotating tube, and two arc slopes symmetrically distributed along the center are provided at the upper end of the rotating tube and located between the two clamping openings.

[0017] According to an embodiment of the present invention, the rebound branch chain includes a cylindrical countersunk hole which is opened on the vertical side wall of the rectangular groove and is in a horizontal state. A telescopic spring is installed in the cylindrical countersunk hole. A snap-in bead is installed at one end of the telescopic spring close to the rectangular groove, and the snap-in bead is slidably connected to the cylindrical countersunk hole.

[0018] According to an embodiment of the present invention, the drilling mechanism further comprises four positioning holes which are arranged on the lifting plate away from the rectangular rod and are distributed in a rectangular shape, and a trumpet-shaped opening is arranged at the upper end of the positioning holes.

[0019] To sum up, the present invention includes the following beneficial technical effects: 1. The replacement device adopted in the present invention can realize the automatic replacement of the drill bit required for drilling. It only needs to install all the required drill bits on the lower ends of multiple rotating branches before drilling. There is no need to manually install and disassemble the drill bits multiple times during drilling, which ensures the continuity of the drilling processing of the hardware mold plate and effectively improves the drilling efficiency.

[0020] 2. The clamping mechanism used in the present invention cooperates with the rotating branch chain to realize the functions of automatic alignment and clamping, effectively avoiding the problem that the rotating branch chain and the clamping mechanism cannot be connected, ensuring that the drill bit that is automatically replaced can work normally each time, and the limiting mechanism cooperates with the limiting hole, and the positioning rod cooperates with the positioning hole, which improves the stability of the drill bit's drilling work.

[0021] 3. The multiple lifting branches used in the present invention can be lifted and lowered independently, which effectively avoids the problem of interference of the non-working drill bit in the drilling of the hardware mold plate, facilitates the drilling machine to drill holes in hardware mold plates of different sizes and types, and improves the applicability of the drilling machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of the present invention from a first viewing angle is shown.

[0024] Figure 2 A schematic diagram of the second viewing angle stereoscopic structure of the present invention is shown.

[0025] Figure 3 A front view of the present invention is shown.

[0026] Figure 4 A left side view of the present invention is shown.

[0027] Figure 5 Shows Figure 4 Sectional view of AA.

[0028] Figure 6 Shows Figure 5 Magnified view of the middle N region.

[0029] Figure 7 Shows Figure 5 Magnified view of the X area in the middle.

[0030] Figure 8 A schematic structural diagram of the drilling mechanism and a portion of the circular plate of the present invention is shown.

[0031] The above drawings include the following reference numerals: 1, fixed plate; 2, replacement device; 21, cylindrical rod; 22, intermittent drive mechanism; 221, intermittent groove wheel; 222, second drive motor; 223, rotating plate; 224, toggle rod; 23, circular plate; 24, drilling mechanism; 241, lifting branch chain; 2411, rectangular rod; 2412, rectangular plate; 2413, return spring; 2414, baffle; 242, lifting plate; 243, rotating branch chain; 2431, rotating tube; 2432, rectangular block; 2433, arc groove; 2434, arc Slope; 2435, snap-in opening; 244, connecting module; 245, drill bit; 246, positioning hole; 25, limiting circular plate; 26, limiting hole; 3, driving device; 31, rectangular frame; 32, first driving motor; 33, hydraulic push rod; 34, snap-in mechanism; 341, columnar rod; 342, snap-in rod; 343, rectangular groove; 344, rebound branch chain; 3441, cylindrical countersunk hole; 3442, telescopic spring; 3443, snap-in bead; 35, positioning rod; 36, limiting mechanism; 361, sliding opening; 362, L-shaped plate; 363, limiting column. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] See also Figure 1-Figure 5 A drilling machine for hardware mold processing includes: a fixed plate 1, and a replacement device 2, the replacement device 2 is connected to the lower end of the fixed plate 1, the replacement device 2 includes a cylindrical rod 21 rotatably connected to the lower end of the fixed plate 1, an intermittent driving mechanism 22 is connected to the cylindrical rod 21, a circular plate 23 is installed at the lower end of the cylindrical rod 21, and a plurality of circumferentially evenly distributed drilling mechanisms 24 are connected to the circular plate 23.

[0034] Initially, the fixing plate 1 is installed on the existing robot arm, so that the fixing plate 1 connects multiple drilling mechanisms 24 to the existing robot arm through the cylindrical rod 21 and the circular plate 23, and the fixing plate 1 is driven by the robot arm to move to the position where the holes are required to be drilled on the hardware mold plate.

[0035] See also Figure 1 and Figure 2 The drilling mechanism 24 includes a lifting branch chain 241 connected to the circular plate 23, the lower end of the lifting branch chain 241 is connected to a lifting plate 242, the lifting plate 242 is connected to a rotating branch chain 243, the lower end of the rotating branch chain 243 is installed with a connecting module 244, and a drill bit 245 is detachably installed on the connecting module 244, and the drill bit 245 is provided with different models.

[0036] During specific work, the connecting module 244 is an existing drill bit installation device. After the fixing plate 1 is installed on the robotic arm, multiple drill bits 245 of different models are selected, and the multiple drill bits 245 of different models required for drilling processing are installed in multiple connecting modules 244 in turn. The connecting module 244 installs and positions the drill bits 245.

[0037] See also Figure 1 , Figure 2 and Figure 5 The drilling machine for hardware mold processing also includes a driving device 3, which is connected to the lower end of the fixed plate 1. The driving device 3 includes a rectangular frame 31 installed at the lower end of the fixed plate 1, and a first driving motor 32 is slidably connected in the rectangular frame 31. A hydraulic push rod 33 is installed on the left side of the first driving motor 32. The upper end of the hydraulic push rod 33 is fixedly connected to the left frame wall of the rectangular frame 31, and a clamping mechanism 34 is connected to the output shaft of the first driving motor 32.

[0038] See also Figure 1 and Figure 5 The replacement device 2 further includes a limiting circular plate 25 mounted on the surface of the cylindrical rod 21 , and a plurality of limiting holes 26 evenly distributed in the circumferential direction are formed on the limiting circular plate 25 .

[0039] See also Figure 1 , Figure 2 and Figure 5 The top of the first driving motor 32 is connected to a limiting mechanism 36, and the limiting mechanism 36 includes a sliding opening 361 opened on the right side wall of the rectangular frame 31. An L-shaped plate 362 is installed on the upper end of the first driving motor 32. The horizontal section of the L-shaped plate 362 is slidably matched with the sliding opening 361, and a limiting column 363 is installed on the lower end of the horizontal section of the L-shaped plate 362.

[0040] During specific operation, the hydraulic push rod 33 is connected to an external hydraulic pump, the first drive motor 32 is connected to an external power supply, and the hydraulic push rod 33 is started. The hydraulic push rod 33 drives the first drive motor 32 to slide downward in the rectangular frame 31. When the first drive motor 32 moves downward, it drives the L-shaped plate 362 to move downward in the sliding opening 361. The L-shaped plate 362 drives the limiting column 363 to move downward and insert it into the corresponding limiting hole 26, thereby realizing the function of limiting the limiting circular plate 25, preventing the cylindrical rod 21 from rotating, thereby increasing the stability of the circular plate 23, and facilitating the stable connection between the clamping mechanism 34 and the rotating branch chain 243.

[0041] See also Figure 1 and Figure 6 The clamping mechanism 34 includes a columnar rod 341 installed at the lower end of the output shaft of the first driving motor 32, and two clamping rods 342 symmetrically distributed along the axis of the columnar rod 341 are installed on the annular surface of the columnar rod 341.

[0042] See also Figure 5 , Figure 6 and Figure 8 The rotating branch chain 243 includes a rotating tube 2431 rotatably connected to the lifting plate 242 through a bearing, the lower end of the rotating tube 2431 is fixedly connected to the connecting module 244, and the upper end of the rotating tube 2431 is provided with two snap-in openings 2435 symmetrically distributed along the axis of the rotating tube 2431, and the upper end of the rotating tube 2431 and located between the two snap-in openings 2435 are provided with two arc-shaped slopes 2434 symmetrically distributed along the center.

[0043] Initially, any one of the rotating tubes 2431 is located directly below the columnar rod 341, and the rotating tube 2431 and the columnar rod 341 are in a separated state. After the limiting column 363 is inserted into the corresponding limiting hole 26, the first driving motor 32 continues to move downward and drives the two locking rods 342 to move downward through the columnar rod 341. The two locking rods 342 contact and push the two arc-shaped slopes 2434 at the upper end of the corresponding rotating tube 2431. The two arc-shaped slopes 2434 are forced to drive the rotating tube 2431 to rotate until the two locking openings 2435 on the rotating tube 2431 rotate to directly below the two locking rods 342. Then, the first driving motor 32 continues to drive the two locking rods 342 to move downward through the columnar rod 341 and enter the two locking openings 2435, thereby realizing the function of quick alignment and connection between the columnar rod 341 and the rotating tube 2431.

[0044] See also Figure 1 and Figure 6 The clamping mechanism 34 also includes a rectangular groove 343 opened at the lower end of the columnar rod 341, and the four vertical side walls of the rectangular groove 343 are connected to the rebound branch chain 344.

[0045] See also Figure 6 The rebound branch chain 344 includes a cylindrical countersunk hole 3441 which is opened on the vertical side wall of the rectangular groove 343 and is in a horizontal state. A telescopic spring 3442 is installed in the cylindrical countersunk hole 3441. A snap-in bead 3443 is installed at one end of the telescopic spring 3442 close to the rectangular groove 343. The snap-in bead 3443 is slidably connected to the cylindrical countersunk hole 3441.

[0046] See also Figure 5 , Figure 6 and Figure 7 A rectangular block 2432 is installed at the upper end of the bottom wall of the rotating tube 2431, and arc grooves 2433 are opened on the four vertical side walls of the rectangular block 2432.

[0047] During specific operation, after the two locking rods 342 move downward and enter the two locking openings 2435, the columnar rod 341 drives the rectangular slot 343 to continue moving downward in the rotating tube 2431, and the rectangular slot 343 slides with the rectangular block 2432, and the rectangular block 2432 pushes multiple locking beads 3443, and the locking beads 3443 are forced to slide in the cylindrical countersunk hole 3441 and squeeze the telescopic spring 3442. When the columnar rod 341 drives the four locking beads 3443 to move to the corresponding arc groove 2433, the squeezed telescopic spring 3442 resets and drives the locking beads 3443 to fit tightly with the corresponding arc groove 2433, thereby realizing the connection between the columnar rod 341 and the rectangular block 2432. At this time, the two locking rods 342 are tightly attached to the lower ends of the two locking openings 2435.

[0048] See also Figure 1 The driving device 3 also includes four positioning rods 35 distributed in a rectangular shape and installed at the lower end of the first driving motor 32.

[0049] See also Figure 1 and Figure 5 The drilling mechanism 24 further includes four positioning holes 246 which are arranged on the lifting plate 242 away from the lifting branch chain 241 and are distributed in a rectangular shape. The upper ends of the positioning holes 246 are provided with trumpet-shaped openings.

[0050] During specific operation, when the first driving motor 32 moves downward, it drives the four positioning rods 35 to move downward, and the four positioning rods 35 are inserted into the corresponding four positioning holes 246, so as to limit the horizontal direction of the lifting plate 242, thereby increasing the stability of the subsequent drilling process.

[0051] See also Figure 1 , Figure 5 and Figure 8 The lifting branch chain 241 includes a rectangular rod 2411 that slides through the circular plate 23 and is in a vertical state. A rectangular plate 2412 is installed on the upper end of the rectangular rod 2411. A return spring 2413 is installed between the lower end of the rectangular plate 2412 and the upper end of the circular plate 23 and is sleeved on the rectangular rod 2411. The lower end of the rectangular rod 2411 is fixedly connected to the lifting plate 242, and a baffle 2414 located below the circular plate 23 is installed on the surface of the rectangular rod 2411.

[0052] During specific operation, after the columnar rod 341 is engaged with the corresponding rotating tube 2431, the first driving motor 32 is started, and the first driving motor 32 drives the columnar rod 341 to rotate. The columnar rod 341 drives the rotating tube 2431 to rotate through the two positioning rods 342, the rectangular groove 343 and the rectangular block 2432. The rotating tube 2431 drives the corresponding drill bit 245 to rotate through the connecting module 244. Then the hydraulic push rod 33 continues to drive the first driving motor 32 to move downward, the rotating tube 2431 drives the lifting plate 242 to move downward, and the lifting plate 242 drives the rectangular rod 2411 to slide downward and compress the reset spring 2413 through the rectangular plate 2412. The rotating tube 2431 continues to move downward and passes through the rotating drill bit. 245 performs drilling processing on the hardware mold plate, and during the drilling processing, only the corresponding drill bit 245 moves downward and works, and the remaining drill bits 245 remain in place, so as not to interfere with the drilling of the hardware mold plate, thereby ensuring the normal operation of the drilling. When one hole needs to be processed after the next hole is drilled, the hydraulic push rod 33 drives the first drive motor 32 to move upward, and the first drive motor 32 drives the rectangular block 2432 to rise through the multiple clamping beads 3443 on the columnar rod 341. At the same time, the squeezed return spring 2413 also drives the lifting plate 242 to rise, thereby driving the drill bit 245 to move out of the hole and avoiding the separation of the columnar rod 341 and the rotating tube 2431, thereby ensuring the normal processing of the next hole.

[0053] See also Figure 1 and Figure 5 The intermittent drive mechanism 22 includes an intermittent groove wheel 221 installed on the surface of the cylindrical rod 21, a second drive motor 222 is installed at the lower end of the fixed plate 1 through a motor seat, a rotating plate 223 is installed on the output shaft of the second drive motor 222, and a toggle rod 224 is installed on the side of the lower end of the rotating plate 223 away from the output shaft of the second drive motor 222.

[0054] During specific operation, the second drive motor 222 is connected to an external power supply. When circular holes of different diameters need to be drilled on the same hardware mold plate, after a hole of one diameter is drilled, the first drive motor 32 is turned off, and the hydraulic push rod 33 drives the first drive motor 32 to move upward. At the same time, the squeezed return spring 2413 is reset and drives the baffle 2414 on the rectangular rod 2411 to move to the lower end of the circular plate 23, and the hydraulic push rod 33 continues to drive the first drive motor 32 to move upward. The first drive motor 32 drives the four snap-in beads 3443 to separate from the corresponding arc grooves 2433 through the columnar rod 341, thereby realizing the function of separating the columnar rod 341 from the rotating tube 2431, and the hydraulic push rod 33 continues to drive the first drive motor 32 to move upward until the limiting column 363 is separated from the corresponding limiting hole 26, and then the second drive motor 222 is started, and the second drive motor 32 is started. The motor 222 drives the toggle rod 224 to rotate through the rotating plate 223, and the toggle rod 224 drives the intermittent groove wheel 221 to rotate intermittently. The intermittent groove wheel 221 drives the circular plate 23 and the limiting circular plate 25 to rotate intermittently through the cylindrical rod 21. The circular plate 23 drives the rotating tubes 2431 on the multiple lifting plates 242 to rotate intermittently through multiple rectangular rods 2411. The multiple rotating tubes 2431 drive the multiple drill bits 245 to rotate, so that the required drill bits 245 are moved to the bottom of the columnar rod 341, realizing the function of automatic replacement of the drill bit 245, effectively improving the efficiency of various aperture processing of the hardware mold plate, and no manual replacement is required by the operator, reducing the manpower input, and then repeating the previous steps of the columnar rod 341 and the rotating tube 2431 clamping and the drill bit 245 drilling, until all the holes on the hardware mold plate are processed and the drilling process is completed.

[0055] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0056] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drilling machine for hardware mold processing, comprising a fixing plate (1), characterized in that: Also includes: A replacement device (2) is connected to the lower end of the fixed plate (1), the replacement device (2) comprising a cylindrical rod (21) rotatably connected to the lower end of the fixed plate (1), the cylindrical rod (21) being connected to an intermittent driving mechanism (22), a circular plate (23) being mounted at the lower end of the cylindrical rod (21), and a plurality of circumferentially evenly distributed drilling mechanisms (24) being connected to the circular plate (23); The drilling mechanism (24) comprises a lifting branch chain (241) connected to the circular plate (23); the lower end of the lifting branch chain (241) is connected to a lifting plate (242); the lifting plate (242) is connected to a rotating branch chain (243); a connecting module (244) is installed at the lower end of the rotating branch chain (243); a drill bit (245) is detachably installed on the connecting module (244); and the drill bit (245) is provided with different models; A driving device (3) is connected to the lower end of the fixed plate (1), the driving device (3) comprises a rectangular frame (31) mounted on the lower end of the fixed plate (1), a first driving motor (32) is slidably connected in the rectangular frame (31), a hydraulic push rod (33) is mounted on the left side of the first driving motor (32), the upper end of the hydraulic push rod (33) is fixedly connected to the left frame wall of the rectangular frame (31), and a clamping mechanism (34) is connected to the output shaft of the first driving motor (32); The clamping mechanism (34) comprises a columnar rod (341) mounted on the lower end of the output shaft of the first drive motor (32), and two clamping rods (342) symmetrically distributed along the axis of the columnar rod (341) are mounted on the annular surface of the columnar rod (341).

2. A drilling machine for metal mold processing according to claim 1, characterized in that: The replacement device (2) further comprises a limiting circular plate (25) mounted on the surface of the cylindrical rod (21), and the limiting circular plate (25) is provided with a plurality of limiting holes (26) evenly distributed in the circumferential direction.

3. The drilling machine for hardware mold processing according to claim 1, characterized in that: The driving device (3) further comprises four positioning rods (35) which are distributed in a rectangular shape and mounted on the lower end of the first driving motor (32); the top of the first driving motor (32) is connected to a limiting mechanism (36).

4. The drilling machine for hardware mold processing according to claim 1, characterized in that: The intermittent drive mechanism (22) comprises an intermittent groove wheel (221) mounted on the surface of the cylindrical rod (21); a second drive motor (222) is mounted on the lower end of the fixed plate (1) via a motor seat; a rotating plate (223) is mounted on the output shaft of the second drive motor (222); and a toggle rod (224) is mounted on the side of the lower end of the rotating plate (223) away from the output shaft of the second drive motor (222).

5. The drilling machine for hardware mold processing according to claim 1, characterized in that: The clamping mechanism (34) further comprises a rectangular groove (343) provided at the lower end of the columnar rod (341), and four vertical side walls of the rectangular groove (343) are all connected to rebound branches (344).

6. The drilling machine for metal mold processing according to claim 3, characterized in that: The limiting mechanism (36) comprises a sliding opening (361) provided on the right side wall of the rectangular frame (31); an L-shaped plate (362) is installed at the upper end of the first drive motor (32); a horizontal section of the L-shaped plate (362) is slidably matched with the sliding opening (361); and a limiting column (363) is installed at the lower end of the horizontal section of the L-shaped plate (362).

7. The drilling machine for metal mold processing according to claim 1, characterized in that: The lifting branch chain (241) comprises a rectangular rod (2411) which slides through the circular plate (23) and is in a vertical state; a rectangular plate (2412) is installed at the upper end of the rectangular rod (2411); a return spring (2413) sleeved on the rectangular rod (2411) is installed between the lower end of the rectangular plate (2412) and the upper end of the circular plate (23); the lower end of the rectangular rod (2411) is fixedly connected to the lifting plate (242); and a baffle (2414) located below the circular plate (23) is installed on the surface of the rectangular rod (2411).

8. The drilling machine for metal mold processing according to claim 1, characterized in that: The rotating branch chain (243) comprises a rotating tube (2431) rotatably connected to the lifting plate (242) via a bearing, the lower end of the rotating tube (2431) is fixedly connected to the connecting module (244), a rectangular block (2432) is installed at the upper end of the bottom wall of the rotating tube (2431), and arc grooves (2433) are provided on the four vertical side walls of the rectangular block (2432), the upper end of the rotating tube (2431) is provided with two clamping openings (2435) symmetrically distributed along the axis of the rotating tube (2431), and two arc slopes (2434) symmetrically distributed along the center are provided at the upper end of the rotating tube (2431) and located between the two clamping openings (2435).

9. The drilling machine for metal mold processing according to claim 5, characterized in that: The rebound branch chain (344) includes a cylindrical countersunk hole (3441) which is opened on the vertical side wall of the rectangular groove (343) and is in a horizontal state. A telescopic spring (3442) is installed in the cylindrical countersunk hole (3441). A snap-in bead (3443) is installed at one end of the telescopic spring (3442) close to the rectangular groove (343). The snap-in bead (3443) is slidably connected to the cylindrical countersunk hole (3441).

10. The drilling machine for metal mold processing according to claim 7, characterized in that: The drilling mechanism (24) further comprises four positioning holes (246) which are arranged on the lifting plate (242) away from the rectangular rod (2411) and are distributed in a rectangular shape, and the upper ends of the positioning holes (246) are provided with trumpet-shaped openings.

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