Metal part punching equipment

Abstract

The utility model belongs to the technical field of punching equipment, and discloses metal part punching equipment which comprises a case, a fixing plate is arranged in the case, a plurality of notches are formed in the fixing plate, a fixing assembly is arranged on the fixing plate, a sliding plate is vertically arranged above the fixing plate in the case in a sliding mode, and a sliding assembly is arranged at the top of the case. A mounting base is vertically and rotatably arranged on the lower side of the sliding plate, a drill bit is mounted at the bottom of the mounting base, a water pumping assembly and a water spraying pipe are arranged on the sliding plate, one end of the water spraying pipe is located below the sliding plate and overhangs towards the drill bit, and the other end of the water spraying pipe is located above the sliding plate and connected with the water pumping assembly; a driving assembly for driving the mounting base to rotate and the water pumping assembly to operate is further arranged on the sliding plate, and a collecting and filtering assembly is arranged at the bottom in the case. The drill bit and the water pumping assembly are synchronously rotated, sufficient water pumping of the water pumping assembly is guaranteed, and therefore stable cooling of the drill bit and metal parts is guaranteed, and the service life of the drill bit is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of punching equipment, in particular to a metal parts punching equipment. Background Art

[0002] Most of the existing drilling devices used for mechanical processing of metal workpieces have relatively simple structures and functions. Since many metal workpieces are made of relatively hard materials, a large amount of heat is generated due to friction during drilling, causing the drill bit to heat up. After long-term use, the drill bit temperature is too high, resulting in a reduction in the service life of the drilling drill bit.

[0003] The Chinese utility model patent with publication number CN217290478U discloses a metal parts punching device for a machining center, including a processing equipment box, a drill bit for processing is provided in the processing equipment box, a punching drive mechanism is provided at the connection between the drill bit and the lifting plate, the punching drive mechanism includes a rotation control group and a lifting group, a clamping mechanism is provided below the drill bit, an elastic plastic cooling pipe is provided on the outside of the drill bit for dust removal and cooling, the elastic plastic cooling pipe is connected to an infusion mechanism, the infusion mechanism is connected to the lifting group, the infusion mechanism includes a reciprocating drive group and an infusion group, the reciprocating drive group includes a rack, the racks are respectively fixedly connected to the lifting plate, a rotating gear is meshed with the rack, the rotating gear is rotatably connected to the processing equipment box through a connecting shaft, one end of the connecting shaft is fixedly connected to a cam, the cam is rotatably connected to one side of the pressure plate, the pressure plate is slidably connected to the outer box through a piston rod, and a return spring is provided at the connection between the pressure plate and the outer box. The lowering of the lifting plate drives the rack to lower, thereby driving the cam to rotate, squeezing the water in the infusion group into the elastic plastic cooling tube, and then spraying it out from the tube mouth of the elastic plastic cooling tube to cool the drill bit.

[0004] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: during the use of the above-mentioned device, when the drill bit drills a metal material with a higher hardness, the drill bit descends very slowly, causing the lifting plate and the rack to descend very slowly, thereby causing the rotating gear and cam to rotate very slowly, and then causing the elastic plastic cooling pipe to spray less water, resulting in poor cooling effect, which is not conducive to the service life of the drill bit. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a metal parts punching device.

[0006] The above technical objectives of the present utility model are achieved through the following technical solutions: a metal parts punching device, comprising a chassis, a fixed plate is provided in the chassis, a plurality of notches are provided on the fixed plate, a fixing assembly for fixing the metal parts is provided on the fixed plate, a sliding plate is provided in the chassis for vertical sliding above the fixed plate, a sliding assembly for driving the sliding plate to slide is provided on the top of the chassis, a mounting seat is provided for vertical rotation on the lower side of the sliding plate, a drill bit is installed at the bottom of the mounting seat, a water pump assembly and a water spray pipe are provided on the sliding plate, one end of the water spray pipe is located below the sliding plate and overhangs towards the drill bit, and the other end is located above the sliding plate and connected to the water pump assembly, and a driving The driving assembly for the rotation of the mounting seat and the operation of the water pumping assembly, a collecting and filtering assembly is provided at the bottom of the chassis, the water pumping assembly includes a cylinder arranged on a sliding plate, the axis of the cylinder is located in a horizontal plane, a push plate is slidingly provided inside one end of the cylinder, and the other end is connected to two one-way valves, a water spray pipe is connected to one of the one-way valves, and the other one-way valve is connected to a suction pipe, one end of the suction pipe extends to the bottom of the chassis, a push rod concentrically arranged with the push plate is slidingly provided on the cylinder wall of the cylinder near the push plate, one end of the push rod is connected to the push plate, and the other end is provided with a contact plate, the push rod is located between the contact plate and the cylinder and a compression spring is sleeved on the rod body, one end of the compression spring is connected to the cylinder, and the other end is connected to the contact plate.

[0007] By adopting the above technical solution, a chassis, a fixed component, a sliding component, a water pump component, a water spray pipe, a driving component, and a collection and filtering component are set. The metal parts are placed in the middle of the fixed plate, and then the metal parts are fixed by the fixed component. The driving component drives the mounting seat to rotate and the water pump component to operate. Then the sliding component drives the sliding plate to descend, causing the rotating drill bit to descend and drill holes in the metal parts. At the same time, the water pump component pumps water into the water spray pipe, and the water spray pipe sprays water to cool the metal parts and the drill bit. The rotation of the drill bit and the water pump component are synchronized, ensuring that the water pump component pumps enough water, thereby ensuring stable cooling of the drill bit and the metal parts, and extending the service life of the drill bit. The debris of the metal parts drilled by the drill bit and the water flow mixture flow down from the opening, and the debris in the mixture is filtered and collected by the collection and filtering component for easy processing.

[0008] The transmission gear of the present invention is a gear which is connected with the gear of the driven gear to the gear of the driven gear, and the gear of the driven gear is connected with the gear of the driven gear to the gear of the driven gear.

[0009] By adopting the above technical solution, a driving motor, a first driving wheel, a first driven wheel, a second driving wheel, a second driven wheel, and a cam are provided. The driving motor drives the first driving wheel to rotate, thereby driving the first driven wheel, the rotating shaft, and the second driving wheel to rotate, and then driving the second driven wheel, the rotating shaft, and the cam to rotate. When the protruding part of the cam contacts the surface of the contact plate, the contact plate and the push rod are pushed. When the protruding part of the cam separates from the surface of the contact plate, the compression spring pushes the contact plate and the push rod to reset.

[0010] Furthermore, the collection and filtration assembly includes convex strips spaced apart in the chassis, a collection box is slidably arranged on the two convex strips, a plurality of filter holes are provided at the bottom of the collection box, an opening is provided on one side of the chassis corresponding to the side of the collection box, and a box door is provided at the opening.

[0011] By adopting the above technical solution, arranging the convex strips, the collection box, the filter holes and the box door, the staff can slide the collection box out of the opening and process the debris in the collection box more conveniently.

[0012] Furthermore, guide plates are provided on both sides of the chassis, and the guide plates are inclined toward the collection box from top to bottom.

[0013] By adopting the above technical solution, guide plates are provided on both sides of the chassis. The guide plates guide the mixture of debris and water flowing from the opening to the collection box, so that the volume of the collection box can be reduced, which is convenient for making the collection box and removing it from the chassis.

[0014] Furthermore, a sliding groove is provided on the inner wall of the chassis, and a slider connected to the sliding plate is slidably provided in the sliding groove.

[0015] By adopting the above technical solution, sliding grooves and sliders are provided to ensure the sliding stability of the sliding plate.

[0016] Furthermore, the sliding assembly includes a plurality of cylinders vertically arranged on the top of the chassis, and the piston rods of the cylinders are downward and connected to the sliding plate.

[0017] By adopting the above technical solution, a cylinder is arranged on the top of the chassis, and the sliding plate is controlled to slide by the cylinder.

[0018] Furthermore, the fixing assembly includes two fixing blocks arranged at intervals on the fixing plate, two sliding holes are provided at intervals on the fixing blocks, a sliding rod is slidingly arranged in the sliding hole, a clamping plate is commonly provided on one side of the two sliding rods near the middle of the fixing plate, a threaded rod is rotatably provided on the side of the clamping plate away from the center of the fixing plate, the fixing block is spirally engaged with the threaded rod through the threaded hole, and a handle is provided on the side of the threaded rod away from the clamping plate.

[0019] By adopting the above technical solution, a fixed block, a sliding hole, a sliding rod, a clamping plate, and a threaded rod are set. The handle is turned to drive the threaded rod to rotate, so that the clamping plate and the sliding rod slide along the direction of the sliding hole, clamping the metal parts between the two clamping plates.

[0020] In summary, the present invention has the following beneficial effects:

[0021] 1. In this application, a chassis, a fixed component, a sliding component, a water pumping component, a water spraying pipe, a driving component, and a collecting and filtering component are provided. The metal parts are placed in the middle of the fixed plate, and then fixed by the fixing component. The driving component is used to drive the mounting seat to rotate and the water pumping component to operate. Then the sliding component drives the sliding plate to descend, causing the rotating drill bit to descend and drill holes in the metal parts. At the same time, the water pumping component pumps water into the water spraying pipe, and the water spraying pipe sprays water to cool the metal parts and the drill bit. The rotation of the drill bit and the water pumping component are synchronized to ensure that the water pumping component pumps enough water, thereby ensuring the stable cooling of the drill bit and the metal parts and extending the service life of the drill bit. The debris of the metal parts drilled by the drill bit and the mixture of water flow flow down from the opening, and the debris in the mixture is filtered and collected by the collecting and filtering component for easy processing;

[0022] 2. In the present application, a driving motor, a first driving wheel, a first driven wheel, a second driving wheel, a second driven wheel, and a cam are provided. The driving motor drives the first driving wheel to rotate, thereby driving the first driven wheel, the rotating shaft, and the second driving wheel to rotate, and then driving the second driven wheel, the rotating shaft, and the cam to rotate. When the protruding part of the cam contacts the surface of the contact plate, the contact plate and the push rod are pushed. When the protruding part of the cam separates from the surface of the contact plate, the compression spring pushes the contact plate and the push rod to reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the chassis of an embodiment of the utility model;

[0025] Figure 3 yes Figure 2 A magnified view of part A;

[0026] Figure 4 This is a schematic structural diagram of the sliding plate, drive assembly, and water pump assembly of an embodiment of the present utility model;

[0027] Figure 5 yes Figure 4 BB cross-sectional view;

[0028] Figure 6 It is a structural diagram of the sliding plate and the mounting seat part of an embodiment of the utility model.

[0029] In the figure: 10, chassis; 11, slide; 12, slider; 13, guide plate; 20, fixing plate; 21, notch; 30, fixing assembly; 31, fixing block; 32, slide rod; 33, clamping plate; 34, threaded rod; 35, handle; 40, sliding plate; 41, mounting base; 42, drill bit; 43, water spray pipe; 50, sliding assembly; 51, cylinder; 60, water pump assembly; 61, cylinder; 62, push plate; 63, one-way valve 64. Suction pipe; 65. Push rod; 66. Contact plate; 67. Compression spring; 70. Drive assembly; 71. Fixed seat; 72. Drive motor; 73. First driving wheel; 74. Rotating shaft; 75. First driven wheel; 76. Second driving wheel; 77. Mounting bracket; 78. Rotating shaft; 781. Second driven wheel; 782. Cam; 80. Filter assembly; 81. Raised strip; 82. Collection box; 83. Filter hole; 84. Box door. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] like Figure 1-6As shown, the embodiment of the present application discloses a metal parts punching device, including a chassis 10, a fixing assembly 30, a sliding assembly 50, a water pump assembly 60, a water spray pipe 43, a driving assembly 70, and a collection and filtering assembly 80. A fixing plate 20 is provided in the chassis 10, and the fixing assembly 30 is provided on the fixing plate 20 for fixing the metal parts. A sliding plate 40 is provided in the chassis 10 for vertical sliding above the fixing plate 20, and the sliding assembly 50 is provided on the top of the chassis 10 for driving the sliding plate 40 to slide. A mounting seat 41 is provided on the lower side of the sliding plate 40 for vertical rotation, and a drill bit 42 is installed at the bottom of the mounting seat 41. When the sliding plate 40 descends, the drill bit 42 descends to punch holes in the metal parts. The water pump assembly 60 and the water spray pipe 43 are both mounted on the sliding plate 40. One end of the water spray pipe 43 is positioned below the sliding plate 40 and extends toward the drill bit 42, while the other end is positioned above the sliding plate 40 and connected to the water pump assembly 60. The sliding plate 40 is also provided with a drive assembly 70 that drives the mounting base 41 to rotate and the water pump assembly 60 to operate. The water spray pipe 43 sprays water to cool the metal parts and the drill bit 42. Several notches 21 are provided in the fixed plate 20 to allow a mixture of debris from the metal parts drilled by the drill bit 42 and the water to flow down the fixed plate 20. A collection and filtration assembly 80 is positioned at the bottom of the chassis 10 to filter and collect debris from the mixture for easy disposal.

[0032] Specifically, the drive assembly 70 includes a fixed base 71 disposed on the sliding plate 40. A drive motor 72 is vertically mounted on the fixed base 71. The output shaft of the drive motor 72 extends downward through the sliding plate 40 and is connected to the mounting base 41, so that the drive motor 72 drives the mounting base 41 to rotate, thereby driving the drill bit 42 to rotate. A first driving wheel 73 is mounted on the shaft body of the drive motor 72 output shaft located on the upper side of the sliding plate 40. A rotating shaft 74 is vertically mounted on the sliding plate 40 for rotation. A first driven wheel 75 and a second driving wheel 76 are mounted on the rotating shaft 74. The first driven wheel 75 meshes with the first driving wheel 73. The diameter of the second driving wheel 76 is smaller than that of the first driven wheel 75. The drive motor 72 drives the first driving wheel 73 to rotate, thereby driving the first driven wheel 75, the rotating shaft 74, and the second driving wheel 76 to rotate. A mounting bracket 77 is provided on the sliding plate 40, and a rotating shaft 78 is provided on the mounting bracket 77 for vertical rotation. A second driven wheel 781 and a cam 782 are provided on the rotating shaft 78. The second driven wheel 781 is engaged with the second driving wheel 76. The diameter of the second driven wheel 781 is larger than the diameter of the second driving wheel 76. The rotation of the second driving wheel 76 drives the second driven wheel 781, the rotating shaft 78 and the cam 782 to rotate.

[0033] During installation, the water pump assembly 60 includes a cylinder 61 mounted on the sliding plate 40. The axis of the cylinder 61 is located in a horizontal plane. A push plate 62 is slidably mounted on one end of the cylinder 61 near the middle of the sliding plate 40. The push plate 62 is circular and its diameter matches the inner diameter of the cylinder 61. A push rod 65 is slidably mounted on the wall of the cylinder 61 near the push plate 62, concentrically arranged with the push plate 62. One end of the push rod 65 is connected to the push plate 62, and the other end is provided with a contact plate 66, so that the contact plate 66, push rod 65, and push plate 62 move synchronously. The end of the cylinder 61 away from the push plate 62 is connected to two one-way valves 63. The water spray pipe 43 is connected to one of the one-way valves 63. The other one-way valve 63 is connected to a water suction pipe 64, one end of which extends to the bottom of the chassis 10. In a specific configuration, the suction pipe 64 passes through the top plate of the chassis 10, extends downward along the outer wall of the chassis to the bottom of the chassis 10, and then passes through the side wall of the chassis 10 to reach the interior of the chassis 10. The suction pipe 64 located below the top plate of the chassis 10 has a reserved length so that the suction pipe 64 is not affected when the sliding plate 40 is lowered. The suction pipe 64 below the top plate of the chassis 10 can be made of a spring tube, which makes the suction pipe 64 more stable when the sliding plate 40 is raised or lowered. The one-way valve 63 connected to the spray pipe 43 restricts the flow of water in the cylinder 61 to the spray pipe 43, while the one-way valve 63 connected to the suction pipe 64 restricts the flow of water in the suction pipe 64 to the cylinder 61. A compression spring 67 is sleeved on the push rod 65, located between the contact plate 66 and the cylinder 61. One end of the compression spring 67 is connected to the cylinder 61, and the other end is connected to the contact plate 66. The wheel surface of the cam 782 contacts the surface of the contact plate 66. When the cam 782 rotates, the protruding portion of the cam 782 contacts the surface of the contact plate 66, pushing the contact plate 66 and the push rod 65, pushing the water in the cylinder 61, so that the water in the cylinder 61 passes through the one-way valve 63 and the water spray pipe 43 and is sprayed out of the nozzle of the water spray pipe 43. During the movement of the contact plate 66, the compression spring 67 is compressed. When the protruding portion of the cam 782 separates from the surface of the contact plate 66, the compression spring 67 pushes the contact plate 66 and the push rod 65 to return to their original position, allowing the water suction pipe 64 to draw the filtered water from the bottom of the chassis 10 into the cylinder 61. The first driving wheel 73 , the first driven wheel 75 , the second driving wheel 76 and the second driven wheel 781 are of different sizes and are used to reduce the rotation speed of the cam 782 to ensure stable operation of the water pump assembly 60 .

[0034] Specifically, the collection and filtration assembly 80 includes horizontally spaced ridges 81 disposed within the chassis 10. A collection box 82 is slidably mounted on two ridges 81. The bottom of the collection box 82 is higher than the lower end of the suction pipe 64. The bottom of the collection box 82 is provided with a plurality of filter holes 83. When the mixed liquid enters the collection box 82, debris is retained within the collection box 82, and water flows out of the filter holes 83 to the bottom of the chassis 10. An opening is provided on one side of the chassis 10, corresponding to the side of the collection box 82. A door 84 is provided at the opening, allowing staff to slide the collection box 82 out of the opening and dispose of the debris within more conveniently. Deflectors 14 are provided on both sides of the chassis 10. The deflectors 14 are tilted from top to bottom toward the collection box 82. These deflectors 14 direct the mixture of debris and water flowing from the opening into the collection box 82, minimizing the size of the collection box 82 and facilitating its manufacture and removal from the chassis 10.

[0035] The fixing assembly 30 includes two fixed blocks 31 spaced apart on the fixing plate 20. The fixed blocks 31 have two sliding holes spaced apart, each containing a sliding rod 32 that slides within the holes. A clamping plate 33 is located near the center of the fixing plate 20, allowing the clamping plates 33 and the sliding rods 32 to slide synchronously along the sliding holes. A threaded rod 34 is pivotally mounted on the side of the clamping plates 33 away from the center of the fixing plate 20. The fixed blocks 31 engage the threaded rod 34 through the threaded holes. Rotation of the threaded rod 34 causes the clamping plates 33 and the sliding rod 32 to slide along the sliding holes, clamping the metal component between the two clamping plates 33. A handle 35 is located on the side of the threaded rod 34 away from the clamping plates 33 to facilitate rotation of the threaded rod 34.

[0036] A slide groove 12 is defined within the inner wall of the chassis 10. A slider 13, connected to a sliding plate 40, slides within the groove 12, ensuring the stability of the sliding plate 40. A sliding assembly 50 includes several cylinders 51 vertically disposed at the top of the chassis 10. The piston rods of the cylinders 51 face downward and connect to the sliding plate 40, controlling the sliding movement of the sliding plate 40.

[0037] The operating principle of a metal parts punching device in this embodiment is: place the metal parts in the middle of the fixed plate 20, and then rotate the handles 35 on both sides to rotate the threaded rod 34, so that the clamping plates 33 on both sides move toward the middle to clamp the metal parts and fix them. Then the drive motor 72 is started to drive the mounting seat 41, the drill bit 42 and the first driving wheel 73 to rotate, thereby driving the first driven wheel 75, the rotating shaft 74 and the second driving wheel 76 to rotate, and then driving the second driven wheel 781, the rotating shaft 78 and the cam 782 to rotate. When the protruding part of the cam 782 contacts the surface of the contact plate 66, the contact plate 66 and the push rod 65 are pushed to push the water in the cylinder 61, so that the water in the cylinder 61 passes through the one-way valve 63 and the water spray pipe 43 and is sprayed out from the nozzle of the water spray pipe 43. During the movement of the contact plate 66, the compression spring 67 is compressed. When the protruding part of the cam 782 separates from the surface of the contact plate 66, the compression spring 67 pushes the contact plate 66 and the push rod 65 to reset, so that the water suction pipe 64 sucks the filtered water from the bottom of the chassis 10 into the cylinder 61. This is repeated, and the water spray pipe 43 continuously sprays water. Then, the air cylinder 51 is activated, driving the slide plate 40 downward, causing the drill bit 42 to descend and drill a hole in the metal component. The water pipe 43 sprays water to cool the drill bit 42 and the metal component. The mixture of metal debris removed by the drill bit 42 and the water flows down the opening, passes through the guide plate 14, and flows into the collection box 82.

[0038] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A metal parts punching device, characterized by: The invention comprises a chassis (10), wherein a fixing plate (20) is provided in the chassis (10), a plurality of notches (21) are provided on the fixing plate (20), a fixing assembly (30) for fixing metal parts is provided on the fixing plate (20), a sliding plate (40) is provided in the chassis (10) above the fixing plate (20) for vertical sliding, a sliding assembly (50) for driving the sliding plate (40) to slide is provided on the top of the chassis (10), and the lower side of the sliding plate (40) is vertically rotated. A mounting seat (41) is provided, a drill bit (42) is installed at the bottom of the mounting seat (41), a water pump assembly (60) and a water spray pipe (43) are provided on the sliding plate (40), one end of the water spray pipe (43) is located below the sliding plate (40) and is suspended toward the drill bit (42), and the other end is located above the sliding plate (40) and is connected to the water pump assembly (60), and a driving assembly (70) for driving the mounting seat (41) to rotate and the water pump assembly (60) to operate is also provided on the sliding plate (40). The bottom of the chassis (10) is provided with a collecting and filtering assembly (80), the water pump assembly (60) comprises a cylinder (61) provided on a sliding plate (40), the axis of the cylinder (61) is located on a horizontal plane, a push plate (62) is provided inside one end of the cylinder (61) for sliding, and two one-way valves (63) are connected to the other end, a water spray pipe (43) is connected to one of the one-way valves (63), and the other one-way valve (63) is connected to a water suction pipe (64), one end of the water suction pipe (64) is connected to the one-way valve (63). The push rod (65) extends to the bottom of the chassis (10), and is slidably provided on the wall of the cylinder (61) adjacent to the push plate (62). The push rod (65) is concentrically arranged with the push plate (62). One end of the push rod (65) is connected to the push plate (62), and the other end is provided with a contact plate (66). The push rod (65) is located between the contact plate (66) and the cylinder (61) and is sleeved with a compression spring (67). One end of the compression spring (67) is connected to the cylinder (61), and the other end is connected to the contact plate (66).

2. The metal parts punching device according to claim 1, characterized in that: The driving assembly (70) includes a fixing seat (71) arranged on the sliding plate (40), a driving motor (72) is vertically arranged on the fixing seat (71), an output shaft of the driving motor (72) passes through the sliding plate (40) downward and is connected to the mounting seat (41), a first driving wheel (73) is arranged on the shaft body of the output shaft of the driving motor (72) located on the upper side of the sliding plate (40), a rotating shaft (74) is vertically rotatably arranged on the sliding plate (40), a first driven wheel (75) and a second driving wheel (76) are arranged on the rotating shaft (74), the first driven wheel (73) and the second driven wheel (76) are arranged on the first driven wheel (73). 5) is engaged with the first driving wheel (73), the diameter of the second driving wheel (76) is smaller than the diameter of the first driven wheel (75), a mounting frame (77) is provided on the sliding plate (40), a rotating shaft (78) is provided on the mounting frame (77) for vertical rotation, a second driven wheel (781) and a cam (782) are provided on the rotating shaft (78), the second driven wheel (781) is engaged with the second driving wheel (76), the diameter of the second driven wheel (781) is larger than the diameter of the second driving wheel (76), and the wheel surface of the cam (782) contacts the plate surface of the contact plate (66).

3. The metal parts punching device according to claim 1, characterized in that: The collecting and filtering assembly (80) comprises convex strips (81) arranged at intervals in the chassis (10); a collecting box (82) is slidably arranged on the two convex strips (81); a plurality of filtering holes (83) are provided at the bottom of the collecting box (82); an opening is provided on one side of the chassis (10) corresponding to the side of the collecting box (82); and a box door (84) is provided at the opening.

4. The metal parts punching device according to claim 3, characterized in that: Guide plates (14) are provided on both sides of the chassis (10), and the guide plates (14) are inclined from top to bottom toward the collection box (82).

5. The metal parts punching device according to claim 1, characterized in that: A sliding groove (12) is provided on the inner wall of the chassis (10), and a sliding block (13) connected to the sliding plate (40) is slidably provided in the sliding groove (12).

6. The metal parts punching device according to claim 1, characterized in that: The sliding assembly (50) comprises a plurality of cylinders (51) vertically arranged on the top of the chassis (10), wherein the piston rods of the cylinders (51) face downward and are connected to the sliding plate (40).

7. The metal parts punching device according to claim 1, characterized in that: The fixing assembly (30) includes two fixing blocks (31) spaced apart on the fixing plate (20), two sliding holes are spaced apart on the fixing block (31), a sliding rod (32) is slidingly arranged in the sliding hole, a clamping plate (33) is commonly provided on one side of the two sliding rods (32) adjacent to the middle of the fixing plate (20), a threaded rod (34) is rotatably provided on the side of the clamping plate (33) away from the center of the fixing plate (20), the fixing block (31) is screwedly matched with the threaded rod (34) through the threaded hole, and a handle (35) is provided on the side of the threaded rod (34) away from the clamping plate (33).

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