Punching machine for window hinge production and machining

Abstract

The invention discloses a punching machine for window hinge production and machining, and belongs to the technical field of punching machines, the punching machine comprises a top plate, a punching mechanism is arranged on the top plate, the punching mechanism comprises a hydraulic cylinder and a punch, the hydraulic cylinder drives the punch to ascend and descend to punch a hinge plate, the bottom of the punching mechanism is movably inserted into a bottom plate, and the bottom of the punching mechanism is movably inserted into the bottom plate. A plurality of second through holes are formed in the bottom plate, the punches are inserted into the second through holes, a limiting mechanism is arranged on one side of the bottom plate, a cleaning mechanism used for cleaning waste materials on the punches is arranged at the bottom of the bottom plate, the bottom plate is fixedly installed on the side plate, and a material receiving disc used for storing the waste materials is arranged below the bottom plate. By means of the mechanical linkage type cleaning mechanism, automatic waste removal is achieved, material blocking is prevented, an additional power source is not needed, energy consumption and maintenance cost are reduced, shutdown cleaning time is shortened, and continuous operation efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of punching machines, and particularly relates to a punching machine for the production and processing of window hinges. Background Art

[0002] A window hinge (also known as a hinge) is a key component connecting a window sash and a window frame. It is usually composed of two metal plates connected by a pin shaft. Its core function is to support the rotational opening and closing of the window sash, and at the same time bear the self-weight of the window and external loads. The hinge plate (i.e., the metal sheet of the hinge) needs to be processed with mounting holes through a punching process so that the hinge can be fixed to the window frame and the window sash by bolts. The punching accuracy directly affects the stability after the hinge is installed and the smoothness of the window opening and closing.

[0003] The problems existing in the prior art are: existing hinge punching equipment cannot automatically clean the punch. After the punch completes punching, waste materials may get stuck at the end of the punch or remain in the die gap, affecting the punching quality and even damaging the cutting tool. It is necessary to stop the machine for manual cleaning, resulting in high maintenance costs and poor operation continuity. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the present invention provides a punching machine for the production and processing of window hinges, which has the advantages of automatically cleaning waste materials and improving the continuous operation efficiency, and solves the problems that existing hinge punching equipment needs to stop the machine for manual cleaning of waste materials in the punch or die gap after the punch completes punching, resulting in high maintenance costs and poor operation continuity.

[0005] The present invention is realized as follows. A punching machine for the production and processing of window hinges includes a top plate. An punching mechanism is arranged on the top plate. The punching mechanism includes a hydraulic cylinder and a punch. The hydraulic cylinder drives the punch to move up and down to punch the hinge plate. The bottom of the punching mechanism is movably inserted into the bottom plate. A plurality of second through holes are arranged on the bottom plate. The punch is inserted into the second through holes. A limiting mechanism is arranged on one side of the bottom plate. A cleaning mechanism for cleaning waste materials on the punch is arranged at the bottom of the bottom plate. The bottom plate is fixedly installed on the side plate. A receiving tray for storing waste materials is arranged below the bottom plate.

[0006] Preferably, the top plate is fixedly installed on a support column. One side of the support column is fixedly connected with a support plate. The upper surface of the support plate is fixedly connected with the lower surface of the top plate.

[0007] Preferably, the hydraulic cylinder is fixedly installed on the top plate. The output end of the hydraulic cylinder is fixedly connected with a lifting plate. First guide rods and second guide rods are respectively fixedly installed at the four corners of the upper surface and the lower surface of the lifting plate. The first guide rods slide through the top plate, and the second guide rods slide through the bottom plate.

[0008] Preferably, according to the present invention, a mounting seat is fixedly connected to the lower surface of the lifting plate, the punch is fixedly installed on the lower surface of the mounting seat, and a plurality of springs and telescopic rods are also fixedly installed on the lower surface of the mounting seat, and the springs are sleeved on the telescopic rods.

[0009] Preferably, according to the present invention, the bottom of the spring and the telescopic rod are fixedly connected with a pressing block, a plurality of first through holes are formed in the pressing block, and the punch slides through the first through holes and the second through holes.

[0010] Preferably, according to the present invention, a movable groove is formed on one side of the upper surface of the bottom plate, a limiting mechanism is arranged on the movable groove, the limiting mechanism includes a lead screw, the lead screw is rotatably installed in the movable groove, and a lead screw driving member is arranged on the lead screw. Both ends of the lead screw are threadedly connected with a nut sleeve, the nut sleeve is slidably connected in the movable groove, and the upper surface of the nut sleeve is rotatably connected with a limiting wheel for limiting both sides of the hinge plate.

[0011] Preferably, according to the present invention, the cleaning mechanism includes a fixed rod, the fixed rod is fixedly connected to the middle of the lower surface of the bottom plate, the bottom of the fixed rod is fixedly connected with a fixed block, a rotating rod is rotatably connected to the fixed rod, a plurality of bristles are arranged on the rotating rod, and the lower surface of the rotating rod is fixedly connected with a second bevel gear. One side of the second bevel gear is meshed with a first bevel gear.

[0012] Preferably, according to the present invention, the first bevel gear is fixedly installed on a rotating shaft, one end of the rotating shaft is rotatably installed on the fixed block, the other end is fixedly connected with a first spur gear, a support frame is arranged on one side of the first spur gear, the upper end of the support frame is fixedly connected with the bottom plate, the rotating shaft is rotatably installed in the support frame, and one side of the first spur gear is meshed with a first rack. The first rack is fixedly installed on a connecting plate, and both ends of the connecting plate are respectively fixedly connected with the bottoms of two second guide rods.

[0013] Preferably, according to the present invention, a communication hole is provided on the bottom plate, and the communication hole communicates with the movable groove and the guide hole of the second guide rod; a second rack is fixedly connected to one of the second guide rods, and the second rack is slidably arranged in the communication hole; a second spur gear is fixedly connected to the lead screw, and the second spur gear is meshed with the second rack; an arc-shaped elastic piece is arranged on the limiting wheel, and an anti-slip strip is fixedly connected to one end of the arc-shaped elastic piece away from the limiting wheel, and the anti-slip strip can be attached to the hinge edge; the telescopic rod is a hydraulic damping telescopic rod.

[0014] Preferably, according to the present invention, the lead screw driving member includes a torsion spring, a winding disc and a winding rope; the inner end of the torsion spring is fixedly connected to the lead screw, and the outer end is fixedly connected to the inner wall of the movable groove; the winding disc is fixedly sleeved on the lead screw, and one end of the winding rope is wound on the winding disc, and the other end is fixedly connected to the rotating shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. By providing spacing-adjustable limit wheels that match the width of the hinge plate, when the hinge plate moves forward, the two limit wheels achieve frictionless limit through rolling contact, preventing the hinge plate from shifting and improving the punching accuracy.

[0017] 2. Through the step-by-step action design of the pressing block and the punch, it is ensured that the hinge plate has no displacement during the punching process, improving the hole position accuracy. The combination of the spring and the telescopic rod provides a flexible pressing force, avoiding over-pressing damage to the plate or rigid impact on the punch. The dual guiding mechanism of the first guiding rod and the second guiding rod ensures the verticality of the movement of the lifting plate and reduces the eccentric wear of the punch.

[0018] 3. The present invention realizes automatic waste removal through a mechanically linked cleaning mechanism, preventing material jamming, without the need for an additional power source, reducing energy consumption and maintenance costs, shortening the downtime for cleaning, and improving the continuous operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic perspective view of the overall first perspective structure of Embodiment 1 of the present invention;

[0020] Figure 2 It is a schematic perspective view of the overall second perspective structure of Embodiment 1 of the present invention;

[0021] Figure 3 It is an exploded view of the partial structure of Embodiment 1 of the present invention;

[0022] Figure 4 It is a schematic perspective view of the partial structure of the cleaning mechanism of Embodiment 1 of the present invention;

[0023] Figure 5 It is a schematic perspective view of the overall structure of Embodiment 2 of the present invention;

[0024] Figure 6 It is a schematic enlarged view of the partial structure at A of Embodiment 2 of the present invention;

[0025] Figure 7 It is a schematic view of the structure of the coil spring, the winding disc and the winding rope of Embodiment 3 of the present invention.

[0026] In the figure: 1. Top plate; 11. Support pillar; 12. Support plate; 2. Cleaning mechanism; 21. Connecting plate; 22. First rack; 23. First spur gear; 24. Support frame; 25. Rotating shaft; 26. First bevel gear; 27. Second bevel gear; 28. Fixed rod; 29. Fixed block; 210. Rotating rod; 211. Brush hair; 3. Punching mechanism; 31. Hydraulic cylinder; 32. First guide rod; 33. Lifting plate; 34. Second guide rod; 35. Punch head; 36. Pressing block; 361. First through hole; 37. Spring; 38. Telescopic rod; 39. Mounting seat; 4. Bottom plate; 41. Second through hole; 42. Moving groove; 43. Connecting hole; 5. Side plate; 6. Limiting mechanism; 61. Lead screw; 62. Lead screw driving part; 63. Nut sleeve; 64. Limiting wheel; 7. Material receiving tray; 621. Second rack; 622. Second spur gear; 623. Arc-shaped elastic piece; 624. Anti-slip strip; 625. Torsion spring; 626. Winding disc; 627. Winding rope. Detailed implementation mode

[0027] To further understand the content, features and effects of the present invention, the following embodiments are hereby exemplified and described in detail in conjunction with the accompanying drawings.

[0028] The structure of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Embodiment 1

[0030] As Figures 1 to 4 shown, a punching machine for the production and processing of window hinges provided by an embodiment of the present invention includes a top plate 1. A punching mechanism 3 is arranged on the top plate 1. The punching mechanism 3 includes a hydraulic cylinder 31 and a punch head 35. The hydraulic cylinder 31 drives the punch head 35 to lift and lower to punch the hinge plate. The bottom of the punching mechanism 3 is movably inserted into the bottom plate 4. A plurality of second through holes 41 are arranged on the bottom plate 4. The punch head 35 is inserted into the second through holes 41. A limiting mechanism 6 is arranged on one side of the bottom plate 4. A cleaning mechanism 2 for cleaning the waste on the punch head 35 is arranged at the bottom of the bottom plate 4. The bottom plate 4 is fixedly installed on the side plate 5. A material receiving tray 7 for storing waste is arranged below the bottom plate 4.

[0031] Furthermore, the top plate 1 is fixedly installed on the support pillars 11. One side of the support pillar 11 is fixedly connected with a support plate 12. The upper surface of the support plate 12 is fixedly connected with the lower surface of the top plate 1. Four support pillars 11 are arranged and installed on the lower surface of the top plate 1 to support the top plate 1. Support plates 12 are arranged on two of the support pillars 11 to enhance the supporting force of the support pillars 11 on the top plate 1.

[0032] Further, the hydraulic cylinder 31 is fixedly installed on the top plate 1. The output end of the hydraulic cylinder 31 is fixedly connected with a lifting plate 33. At the four corners of the upper surface and the lower surface of the lifting plate 33, a first guide rod 32 and a second guide rod 34 are respectively fixedly installed. The first guide rod 32 slidably penetrates through the top plate 1, and the second guide rod 34 slidably penetrates through the bottom plate 4. The lower surface of the lifting plate 33 is fixedly connected with a mounting seat 39. A punch 35 is fixedly installed on the lower surface of the mounting seat 39. A plurality of springs 37 and telescopic rods 38 are also fixedly installed on the lower surface of the mounting seat 39. The spring 37 is sleeved on the telescopic rod 38. The bottom of the spring 37 and the telescopic rod 38 is fixedly connected with a pressing block 36. A plurality of first through holes 361 are formed in the pressing block 36. The punch 35 slidably penetrates through the first through hole 361 and the second through hole 41.

[0033] The hydraulic cylinder 31 drives the lifting plate 33 to move vertically downward along the first guide rod 32 and the second guide rod 34. In the initial stage, the pressing block 36 first contacts the hinge plate through the elastic connection of the spring 37 and the telescopic rod 38, and the spring 37 compresses to generate a constant pressing force. When the pressing block 36 is completely pressed, the punch 35 continues to move downward through the first through hole 361 and the second through hole 41 to complete the punching. After the punching is completed, the hydraulic cylinder 31 returns to drive the lifting plate 33 to reset, and the spring 37 drives the pressing block 36 to disengage from the workpiece.

[0034] The step-by-step action design of the pressing block 36 and the punch 35 ensures that the hinge plate has no displacement during the punching process, improves the hole position accuracy. The combination of the spring 37 and the telescopic rod 38 provides a flexible pressing force to avoid overpressure damage to the plate or rigid impact on the punch 35. The double guiding mechanism of the first guide rod 32 and the second guide rod 34 ensures the verticality of the movement of the lifting plate 33 and reduces the eccentric wear of the punch 35.

[0035] Further, a movable groove 42 is formed on one side of the upper surface of the bottom plate 4. A limiting mechanism 6 is arranged on the movable groove 42. The limiting mechanism 6 includes a lead screw 61. The lead screw 61 is rotatably installed in the movable groove 42, and a lead screw driving member 62 is arranged on the lead screw 61. Both ends of the lead screw 61 are threadedly connected with a nut sleeve 63. The nut sleeve 63 is slidably connected in the movable groove 42. The upper surface of the nut sleeve 63 is rotatably connected with a limiting wheel 64 for limiting both sides of the hinge plate.

[0036] During operation, the hinge plate is placed on the bottom plate 4 so that it is located between the two limiting wheels 64. By rotating the lead screw driving member 62 to drive the lead screw 61 to rotate, the lead screw 61 drives the two nut sleeves 63 to slide synchronously and reversely along the movable groove 42, driving the limiting wheels 64 to move to a spacing matching the width of the hinge plate. When the hinge plate moves forward, the two limiting wheels 64 realize frictionless limiting through rolling contact, avoiding the deviation of the hinge plate. In this embodiment, the lead screw driving member 62 can be a motor or a knob.

[0037] Further, the cleaning mechanism 2 includes a fixed rod 28. The fixed rod 28 is fixedly connected to the middle of the lower surface of the bottom plate 4. A fixed block 29 is fixedly connected to the bottom of the fixed rod 28. A rotating rod 210 is rotatably connected to the fixed rod 28. A plurality of bristles 211 are arranged on the rotating rod 210. A second bevel gear 27 is fixedly connected to the lower surface of the rotating rod 210. A first bevel gear 26 is meshed and connected to one side of the second bevel gear 27. The first bevel gear 26 is fixedly installed on a rotating shaft 25. One end of the rotating shaft 25 is rotatably installed on the fixed block 29, and the other end is fixedly connected to a first spur gear 23. A support frame 24 is arranged on one side of the first spur gear 23. The upper end of the support frame 24 is fixedly connected to the bottom plate 4. The rotating shaft 25 is rotatably installed in the support frame 24. A first rack 22 is meshed and connected to one side of the first spur gear 23. The first rack 22 is fixedly installed on a connecting plate 21. Both ends of the connecting plate 21 are respectively fixedly connected to the bottoms of two second guide rods 34.

[0038] With the linkage type waste cleaning mechanism 2, when the lifting plate 33 descends to the punching completion position, the connecting plate 21 fixed to the bottom of the second guide rod 34 drives the first rack 22 to move downward synchronously, driving the first spur gear 23 to rotate. The rotating shaft 25 transmits the rotational motion to the rotating rod 210 through the vertical meshing of the first bevel gear 26 and the second bevel gear 27. The bristles 211 on the surface of the rotating rod 210 rotate with the rod body, cleaning the bottom end of the punch 35, sweeping the waste connected to the punch 35, and collecting it through the material receiving tray 7. Through the seamless connection between the stamping action and the cleaning function, no additional power source is required, reducing energy consumption and maintenance costs, completely removing the residual waste at the root of the punch 35, and preventing material jamming.

[0039] Embodiment 2

[0040] Different from Embodiment 1, the screw drive member 62 is optimized, and the related structures are optimized as follows:

[0041] Refer to Figures 1 - 6 , a communication hole 43 is provided on the bottom plate 4, and the communication hole 43 communicates with the movable groove 42 and the guide hole of the second guide rod 34; a second rack 621 is fixedly connected to one of the second guide rods 34, and the second rack 621 is slidably arranged in the communication hole 43; a second spur gear 622 is fixedly connected to the screw rod 61, and the second spur gear 622 is meshed with the second rack 621; an arc-shaped elastic piece 623 is provided on the limit wheel 64, and an anti-slip strip 624 is fixedly connected to one end of the arc-shaped elastic piece 623 away from the limit wheel 64, and the anti-slip strip 624 can be attached to the hinge edge; the telescopic rod 38 is a hydraulic damping telescopic rod.

[0042] With the above settings, during use, the steps are as follows: After starting the hydraulic cylinder 31, the lifting plate 33 drives the pressing block 36, the punch 35, and the second guide rod 34 to move downward synchronously; the second guide rod 34 drives the screw rod 61 to rotate through the second rack 621 and the second spur gear 622, making the limit wheels 64 approach each other. The limit wheels 64 drive the arc-shaped elastic piece 623 and the anti-slip strip 624 to approach each other, and the anti-slip strip 624 fits against the edge of the hinge, accurately positioning the hinge plate to the center of the bottom plate 4. At the same time, the pressing block 36 presses the hinge plate to prevent the hinge plate from moving; when the second guide rod 34 continues to descend, the limit wheels 64 continue to approach each other, and the arc-shaped elastic piece 623 bends (while storing elastic potential energy), so it will not hinder the second guide rod 34 from continuing to descend; then, the punch 35 completes the punching and penetrates the second through-hole 41, and the second guide rod 34 drives the first rack 22 to move downward synchronously. The first rack 22 is in transmission with the first spur gear 23, driving the brush hairs 211 to rotate to remove the waste on the surface of the punch 35, and the waste falls into the material receiving tray 7. Finally, the hydraulic cylinder 31 returns, and the punch 35 first disengages from the hinge plate. Since the telescopic rod 38 is a hydraulic damping telescopic rod, before the arc-shaped elastic piece 623 returns to its original state, the pressing block 36 will move upward to release the pressing on the hinge plate. At the same time, the elastic potential energy of the arc-shaped elastic piece 623 can push the hinge plate out a certain distance, thus realizing auxiliary blanking.

[0043] Embodiment 3

[0044] Different from Embodiment 1, the screw rod driving member 62 is optimized, and the related structures are optimized as follows:

[0045] Refer to Figures 1 - 4 and Figure 7 , the screw rod driving member 62 includes a coil spring 625, a winding disc 626, and a winding rope 627; the inner end of the coil spring 625 is fixedly connected to the screw rod 61, and the outer end is fixedly connected to the inner wall of the movable groove 42; the winding disc 626 is fixedly sleeved on the screw rod 61, and one end of the winding rope 627 is wound on the winding disc 626, and the other end is fixedly connected to the rotating shaft 25. With this setting, after starting the hydraulic cylinder 31, the lifting plate 33 drives the pressing block 36 and the punch 35 to move downward synchronously. The first rack 22 can drive the rotating shaft 25 to rotate, thereby driving the screw rod 61 to rotate, so as to adjust the distance between the limit wheels 64 and accurately position the hinge plate to the center of the bottom plate 4 (the winding rope 627 can elastically deform, so it will not hinder the following series of actions). Then, the pressing block 36 presses the hinge plate, the punch 35 completes the punching and penetrates the second through-hole 41, the second guide rod 34 drives the first rack 22 to move downward synchronously. The first rack 22 is in transmission with the first spur gear 23, driving the brush hairs 211 to rotate to remove the waste on the surface of the punch 35, and the waste falls into the material receiving tray 7. After the hydraulic cylinder 31 returns, each component resets to complete a single processing cycle.

[0046] Working principle of the present invention:

[0047] During operation, the distance between the limit wheels 64 is adjusted by the lead screw driving member 62 to accurately position the hinge plate at the center of the bottom plate 4. After the hydraulic cylinder 31 is started, the lifting plate 33 drives the pressing block 36 and the punch 35 to move downward synchronously. The pressing block 36 first presses the hinge plate tightly, and the punch 35 punches and penetrates the second through hole 41. The second guide rod 34 drives the first rack 22 to move downward synchronously. The first rack 22 is in transmission with the first spur gear 23 to drive the brush bristles 211 to rotate and clean the waste on the surface of the punch 35. The waste falls into the material receiving tray 7. After the hydraulic cylinder 31 returns, each component resets to complete a single processing cycle.

[0048] In summary, for the punching machine for the production and processing of window hinges, through the coordinated operation of the limiting mechanism 6 and the step-by-step stamping, the positioning and punching accuracy of the hinge plate are ensured, and it is suitable for the production of multi-specification products. The automatic cleaning of waste is realized through the mechanical linkage type cleaning mechanism 2, the downtime for cleaning is reduced, and the continuous operation efficiency is improved.

[0049] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0050] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A punching machine for the production and processing of window hinges, including a top plate (1), and a punching mechanism (3) is arranged on the top plate (1), characterized in that: The punching mechanism (3) includes a hydraulic cylinder (31) and a punch (35). The hydraulic cylinder (31) drives the punch (35) to move up and down for punching the hinge plate. The bottom of the punching mechanism (3) is movably inserted into the bottom plate (4). A number of second through holes (41) are provided on the bottom plate (4). The punch (35) is inserted into the second through holes (41). A limiting mechanism (6) is provided on one side of the bottom plate (4). A cleaning mechanism (2) for cleaning the waste on the punch (35) is provided at the bottom of the bottom plate (4). The bottom plate (4) is fixedly installed on the side plate (5). A material receiving tray (7) for storing waste is provided below the bottom plate (4).

2. The punching machine for the production and processing of window hinges according to claim 1, characterized in that: The top plate (1) is fixedly installed on the support column (11). One side of the support column (11) is fixedly connected to a support plate (12). The upper surface of the support plate (12) is fixedly connected to the lower surface of the top plate (1).

3. The punching machine for the production and processing of window hinges according to claim 1, characterized in that: The hydraulic cylinder (31) is fixedly installed on the top plate (1). The output end of the hydraulic cylinder (31) is fixedly connected to a lifting plate (33). First guide rods (32) and second guide rods (34) are respectively fixedly installed at the four corners of the upper surface and the lower surface of the lifting plate (33). The first guide rods (32) slide through the top plate (1). The second guide rods (34) slide through the bottom plate (4).

4. The punching machine for the production and processing of window hinges according to claim 3, characterized in that: The lower surface of the lifting plate (33) is fixedly connected to a mounting seat (39). The punch (35) is fixedly installed on the lower surface of the mounting seat (39). A number of springs (37) and telescopic rods (38) are also fixedly installed on the lower surface of the mounting seat (39). The springs (37) are sleeved on the telescopic rods (38).

5. The punching machine for the production and processing of window hinges according to claim 4, characterized in that: The bottoms of the springs (37) and the telescopic rods (38) are fixedly connected to a pressing block (36). A number of first through holes (361) are provided on the pressing block (36). The punch (35) slides through the first through holes (361) and the second through holes (41).

6. The punching machine for the production and processing of a window hinge according to claim 5, wherein: An activity groove (42) is provided on one side of the upper surface of the bottom plate (4). The limiting mechanism (6) is provided on the activity groove (42). The limiting mechanism (6) includes a lead screw (61). The lead screw (61) is rotatably installed in the activity groove (42), and a lead screw driving member (62) is provided on the lead screw (61). Both ends of the lead screw (61) are threadedly connected to a nut sleeve (63). The nut sleeve (63) is slidably connected to the activity groove (42). The upper surface of the nut sleeve (63) is rotatably connected to a limiting wheel (64) for limiting both sides of the hinge plate.

7. The punching machine for the production and processing of window hinges according to claim 6, characterized in that: The cleaning mechanism (2) includes a fixed rod (28). The fixed rod (28) is fixedly connected to the middle of the lower surface of the bottom plate (4). The bottom of the fixed rod (28) is fixedly connected to a fixed block (29). A rotating rod (210) is rotatably connected to the fixed rod (28). A number of brush hairs (211) are provided on the rotating rod (210). The lower surface of the rotating rod (210) is fixedly connected to a second bevel gear (27). A first bevel gear (26) is meshed and connected to one side of the second bevel gear (27).

8. The punching machine for the production and processing of window hinges according to claim 7, characterized in that: The first bevel gear (26) is fixedly installed on the rotating shaft (25). One end of the rotating shaft (25) is rotatably installed on the fixed block (29), and the other end is fixedly connected with a first spur gear (23). A support frame (24) is arranged on one side of the first spur gear (23). The upper end of the support frame (24) is fixedly connected with the bottom plate (4). The rotating shaft (25) is rotatably installed in the support frame (24). A first rack (22) is meshed and connected on one side of the first spur gear (23). The first rack (22) is fixedly installed on the connecting plate (21). The two ends of the connecting plate (21) are respectively fixedly connected with the bottoms of two second guide rods (34).

9. The punching machine for the production and processing of a window hinge according to claim 8, characterized in that: A communication hole (43) is provided on the bottom plate (4). The communication hole (43) communicates with the movable groove (42) and the guide hole of the second guide rod (34). A second rack (621) is fixedly connected to one of the second guide rods (34). The second rack (621) is slidably arranged in the communication hole (43). A second spur gear (622) is fixedly connected to the lead screw (61). The second spur gear (622) is meshed with the second rack (621). An arc-shaped elastic piece (623) is arranged on the limit wheel (64). One end of the arc-shaped elastic piece (623) far away from the limit wheel (64) is fixedly connected with an anti-slip strip (624). The anti-slip strip (624) can be attached to the hinge edge. The telescopic rod (38) is a hydraulic damping telescopic rod.

10. The punching machine for the production and processing of window hinges according to claim 8, wherein: The lead screw driving member (62) includes a coil spring (625), a winding disc (626) and a winding rope (627). The inner end of the coil spring (625) is fixedly connected to the lead screw (61), and the outer end is fixedly connected to the inner wall of the movable groove (42). The winding disc (626) is fixedly sleeved on the lead screw (61). One end of the winding rope (627) is wound on the winding disc (626), and the other end is fixedly connected to the rotating shaft (25).

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