A lock hole puncher

Abstract

The utility model discloses a kind of lock hole punchers, belong to lock hole processing equipment technical field;The lock hole puncher includes body, first slider and punch head, and the first slider is detachably connected with the punch head by fixed assembly;The fixed assembly includes the first connecting ring fixed to the first slider and the second connecting ring with the punch head being fixed, and the clamping connection of two connecting rings is realized by mutually matched clamping hook and clamping block;The fixed assembly further includes L-shaped plate for abutting the second connecting ring and bolt for locking;Limiting assembly driven by air cylinder is further provided on body to clamp workpiece.The utility model is through the quick-change structure and secondary locking of clamping, solve the problem that punch head replacement is complicated and positioning is not accurate, realize the quick, accurate and connection stable replacement of punch head, and simultaneously, the accuracy of workpiece positioning is improved by automatic limiting assembly, and the production efficiency and processing quality of equipment are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of keyhole processing equipment, and in particular to a keyhole punching machine. Background Technology

[0002] A lock-drilling machine is a specialized piece of machinery used to process holes for installing locks on workpieces such as door panels and cabinets. It is widely used in industries such as wooden door production and furniture manufacturing, and is a key piece of equipment for achieving standardized and large-scale lock-drilling. A typical lock-drilling machine usually consists of a machine body, a worktable, and a drilling head driven by a motor. The drilling head completes the hole processing through its drilling motion.

[0003] With the diversification of market demand, the types and specifications of locks are becoming increasingly diverse, requiring changes to the size and shape of the lock holes pre-drilled on door panels. Therefore, in actual production, drilling machines need to frequently change drilling heads of different specifications to meet the processing needs of different batches of products. Most existing drilling heads are fixed to the drive mechanism with multiple bolts or complex clamps. Replacing them requires operators to use specialized tools to loosen or tighten multiple connectors one by one, a process that is not only cumbersome but also time-consuming.

[0004] The downtime caused by this replacement method directly impacts overall production efficiency. More importantly, during repeated disassembly and assembly, human error makes it difficult to guarantee ideal alignment accuracy and installation stability each time. Even a slight misalignment of the drilling head can lead to inaccurate locking hole positions, resulting in product scrap and increased production costs. Therefore, simplifying the drilling head replacement process while ensuring connection reliability and improving replacement efficiency has become a pressing technical problem to be solved in this field.

[0005] Therefore, this utility model proposes a keyhole punching machine to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a keyhole punching machine, which aims to improve the problems of cumbersome head replacement process, inaccurate positioning, low workpiece clamping and positioning accuracy, and insufficient automation in the existing technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a keyhole punching machine, comprising: a machine body, and an electric slide rail disposed above the machine body, wherein a first slider is slidably connected on the electric slide rail, and a punching head is detachably connected below the first slider via a fixing component; The fixing component includes a first connecting ring fixedly connected to the lower part of the first slider, and a fixing block fixedly installed on the outer wall of the first connecting ring. A first hook and a first locking block are fixedly connected to the outer wall of the first connecting ring. The fixing component also includes a second connecting ring. The punch head is fixedly connected to the lower surface of the second connecting ring. A second hook and a second locking block are fixedly connected to the outer wall of the second connecting ring. Furthermore, the second connecting ring is rotatably sleeved on the first connecting ring, the second hook of the second connecting ring engages with the first locking block of the first connecting ring, and the second locking block of the second connecting ring engages with the first hook of the first connecting ring.

[0008] Preferably, an L-shaped plate is rotatably connected to the fixing block, and the L-shaped plate abuts against the outer wall of the second connecting ring; the second connecting ring is also threaded with a bolt for locking the L-shaped plate.

[0009] Preferably, a worktable is fixedly connected to the upper surface of the machine body, and a limiting component for positioning the workpiece is provided on the worktable.

[0010] Preferably, the limiting component includes a limiting plate and a second slider fixedly connected to the lower end of the limiting plate; the upper surface of the worktable is provided with a groove for the second slider to slide.

[0011] Preferably, the limiting component includes a cylinder, the output end of which passes through the fixing plate and is fixedly connected to the limiting plate, and one end of the telescopic rod is fixedly connected to the fixing plate and the other end is fixedly connected to the limiting plate.

[0012] Preferably, a support plate is fixedly connected to the outer wall of the machine body, the cylinder is fixed inside the support plate, a fixing plate is fixedly connected to the side of the outer wall of the machine body near the worktable, and the output end of the cylinder passes through the fixing plate and is fixedly connected to the outer wall of the limiting plate.

[0013] Preferably, a hydraulic cylinder is fixedly connected to the top of the machine body, and a fixed platform is fixedly installed on the outer wall of the hydraulic cylinder. The electric slide rail and the motor used to drive the first slider are both installed on the fixed platform.

[0014] Preferably, the outer wall of the machine body is provided with a heat dissipation mesh.

[0015] This utility model has the following beneficial effects: 1. In this utility model, by setting up a locking structure consisting of a first connecting ring, a second connecting ring, a hook and a locking block, and a fixing component for secondary locking with an L-shaped plate and bolts, the problem of complex, time-consuming and inaccurate positioning of the punch head replacement process in the prior art is solved. This achieves the technical effect of fast and accurate replacement of the punch head while ensuring high connection stability, greatly improving production efficiency and processing quality.

[0016] 2. In this utility model, by setting a limiting plate driven by a cylinder and guided by a slider and a groove, the problems of workpiece positioning relying on manual labor, unstable clamping, and easy displacement during processing that affect the drilling accuracy in the prior art are solved. The technical effect of automated and precise positioning and stable clamping of workpiece is achieved, ensuring the consistency and accuracy of the key hole processing position and improving the automation level of the equipment.

[0017] 3. In this utility model, by setting an adjustable-height hydraulic cylinder and a heat dissipation mesh for heat dissipation, the problems of poor adaptability of existing drilling machines to workpieces of different thicknesses and insufficient stability during long-term operation are solved, thus achieving the technical effect of broadening the scope of application of the equipment and enhancing the reliability of the equipment during long-term operation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a keyhole punching machine proposed in this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the punching head part of a keyhole punching machine according to the present invention; Figure 4 This is a schematic diagram of the limiting plate part of a keyhole punching machine proposed in this utility model; Legend: 1. Machine body; 2. Hydraulic cylinder; 3. Heat dissipation mesh; 4. Fixed platform; 5. Motor; 6. Electric slide rail; 7. First slider; 8. Fixing assembly; 801. First connecting ring; 802. Second connecting ring; 803. First locking block; 804. First locking hook; 805. Second locking hook; 806. Fixing block; 807. L-shaped plate; 808. Bolt; 809. Second locking block; 810. Drilling head; 9. Limiting assembly; 901. Cylinder; 902. Fixing plate; 903. Telescopic rod; 904. Limiting plate; 905. Slide groove; 906. Second slider; 10. Worktable plate; 11. Support plate. Detailed Implementation

[0019] Please refer to Figures 1 to 4This utility model provides a keyhole punching machine, which aims to solve the problems of cumbersome head replacement process, inaccurate positioning, low workpiece clamping and positioning accuracy, and insufficient automation in the prior art.

[0020] The keyhole punching machine includes a machine body 1, which serves as the mounting base and support platform for the entire equipment. An electric slide rail 6 is provided on the top of the body 1. A first slider 7 is slidably connected on the electric slide rail 6. The first slider 7 is used to perform precise reciprocating linear motion under the guidance of the electric slide rail 6. A punch head 810 is detachably connected to the lower part of the first slider 7 via a fixing component 8. The fixing component 8 is the core structure for realizing quick replacement and reliable fixation of the punch head 810. The fixing component 8 includes a first connecting ring 801 fixedly connected to the bottom of the first slider 7, and a fixing block 806 fixedly installed on the outer wall of the first connecting ring 801. A first hook 804 is fixedly connected to the outer wall of the first connecting ring 801, and a first locking block 803 is also fixedly connected to the outer wall of the first connecting ring 801. The fixing component 8 also includes a second connecting ring 802. A punch head 810 is fixedly connected to the lower surface of the second connecting ring 802, and a second hook 805 and a second locking block 809 are fixedly connected to the outer wall of the second connecting ring 802. During assembly, the second connecting ring 802 is rotatably sleeved on the first connecting ring 801. By rotating the second connecting ring 802, the second hook 805 of the second connecting ring 802 engages with the first locking block 803 of the first connecting ring 801, and the second locking block 809 of the second connecting ring 802 engages with the first hook 804 of the first connecting ring 801, thereby achieving quick locking and coaxial positioning between the two connecting rings.

[0021] To further ensure the absolute stability of the punch head 810 during operation, the technical solution of this embodiment also includes a secondary locking structure in the fixing component 8; The locking structure is described in detail as follows: An L-shaped plate 807 is rotatably connected to the fixing block 806. The L-shaped plate 807 can rotate around the connection point with the fixing block 806. When locked, the main body of the L-shaped plate 807 abuts against the outer wall of the second connecting ring 802. The rigid structure of the L-shaped plate 807 itself forms a radial limit on the already engaged second connecting ring 802, effectively preventing the second connecting ring 802 from accidentally loosening and rotating due to equipment vibration or processing impact. To reliably fix the L-shaped plate 807 in the locked position, the second connecting ring 802 is also threaded with a bolt 808 for locking the L-shaped plate 807. When locking is required, the bolt 808 is screwed into the interior of the L-shaped plate 807 and the second connecting ring 802. The head of the bolt 808 will press against the L-shaped plate 807, thereby completing the double locking of the entire quick-change mechanism. This combination structure, which achieves quick positioning through hooks and blocks and then locks the L-shaped plate 807 and the bolt 808 for a second time, takes into account both replacement efficiency and connection reliability, and ensures high stability and processing accuracy during the drilling process.

[0022] In a preferred embodiment, in order to achieve precise positioning and stable clamping of the workpiece, a worktable 10 is fixedly connected to the upper surface of the machine body 1. The worktable 10 provides a flat bearing surface for the workpiece. A limiting component 9 for positioning the workpiece is provided on the worktable 10. The limiting component 9 can apply a lateral pushing force to the workpiece placed on the worktable 10, so that the workpiece is close to the processing reference and prevents displacement during the drilling process.

[0023] As a specific implementation of the limiting component 9, the limiting component 9 includes a limiting plate 904 and a second slider 906 fixedly connected to the lower end of the limiting plate 904; correspondingly, the upper surface of the worktable 10 is provided with a groove 905 for the second slider 906 to slide. The sliding engagement between the second slider 906 and the groove 905 provides precise guidance for the reciprocating linear motion of the limiting plate 904, ensuring the smoothness and stability of the limiting action.

[0024] As a specific implementation of the driving method of the limiting component 9, the limiting component 9 includes a cylinder 901 as a power source. The output end of the cylinder 901 passes through the fixed plate 902 and is fixedly connected to the limiting plate 904. One end of the telescopic rod 903 is fixedly connected to the fixed plate 902, and the other end is fixedly connected to the limiting plate 904. When the cylinder 901 works, the output end directly pushes the limiting plate 904 to move along the slide groove 905, thereby realizing the clamping or loosening of the workpiece.

[0025] To ensure a more stable installation of the limiting component 9, a support plate 11 is fixedly connected to the outer wall of the machine body 1, and the cylinder 901 is fixed inside the support plate 11, providing a solid installation foundation. At the same time, a fixing plate 902 is fixedly connected to the outer wall of the machine body 1 on the side near the worktable 10. The output end of the cylinder 901 passes through the fixing plate 902 and is finally fixedly connected to the outer wall of the limiting plate 904. The fixing plate 902 provides support and guidance for the telescopic rod 903.

[0026] As a preferred layout for the overall structure of the punching machine, a hydraulic cylinder 2 is fixedly connected to the top of the machine body 1, and a fixed platform 4 is fixedly installed on the outer wall of the hydraulic cylinder 2; the previously mentioned electric slide rail 6 and the motor 5 used to drive the first slider 7 are both integrated and installed on the fixed platform 4. By controlling the lifting and lowering of the hydraulic cylinder 2, the height of the punching mechanism can be adjusted as a whole to meet the processing requirements of workpieces of different thicknesses.

[0027] To ensure the long-term operational stability of the equipment, a heat dissipation mesh 3 is provided on the outer side of the machine body 1, specifically, near the motor 5 and hydraulic cylinder 2. The heat dissipation mesh 3 promotes air convection and can effectively remove the heat generated by the motor 5 and transmission components during operation, ensuring the continuous and stable operation of the equipment.

[0028] Working principle: When it is necessary to replace the punch head 810 of different specifications, the operator first loosens and removes the bolt 808 used to lock the L-shaped plate 807, and then rotates the L-shaped plate 807 around the connection point with the fixing block 806 to the unlocked position. At this time, the secondary lock on the second connecting ring 802 is released. Next, the operator rotates the second connecting ring 802. This rotation causes the second hook 805 of the second connecting ring 802 to disengage from the slot of the first locking block 803 of the first connecting ring 801, and at the same time, the first connecting ring 801... The first hook 804 disengages from the slot of the second locking block 809 of the second connecting ring 802, thus completely releasing the engagement between the two connecting rings. The second connecting ring 802 with the old punch head 810 can then be removed axially. The operation is reversed when installing the new punch head 810: the second connecting ring 802 with the new punch head 810 is fitted onto the first connecting ring 801, and rotated in the opposite direction until the hook and the locking block are fully engaged. Then, the L-shaped plate 807 is reset and locked with bolts 808, thus completing a high-precision installation in a short time.

[0029] When drilling, the workpiece is first placed on the worktable 10. Then, the cylinder 901 is activated, which pushes the limiting plate 904 forward. The telescopic rod 903 limits the limiting plate 904 to prevent it from shaking. The second slider 906 at the lower end of the limiting plate 904 slides smoothly in the slide groove 905. Finally, the limiting plate 904 pushes the workpiece into place and clamps it firmly. Next, the motor 5 is started, driving the electric slide rail 6 connected to it to work. The electric slide rail 6 drives the first slider 7 on it to descend precisely in the vertical direction. The entire fixing assembly 8 and the drilling head 810 fixed below the first slider 7 descend synchronously to drill the workpiece. After the processing is completed, the motor 5 reverses, driving the drilling head 810 to reset. The cylinder 901 releases the workpiece, completing one complete processing cycle.

[0030] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A keyhole punching machine, comprising a machine body (1) and an electric slide rail (6) disposed above the machine body (1), wherein a first slider (7) is slidably connected on the electric slide rail (6), and a punching head (810) is detachably connected below the first slider (7) via a fixing component (8), characterized in that: The fixing component (8) includes a first connecting ring (801) fixedly connected to the bottom of the first slider (7), and a fixing block (806) fixedly installed on the outer wall of the first connecting ring (801). A first hook (804) is fixedly connected to the outer wall of the first connecting ring (801), and a first locking block (803) is fixedly connected to the outer wall of the first connecting ring (801). The fixing component (8) further includes a second connecting ring (802), the lower surface of which is fixedly connected to the punch head (810), and the outer wall of the second connecting ring (802) is fixedly connected to a second hook (805) and a second locking block (809). The second connecting ring (802) is rotatably sleeved on the first connecting ring (801). The second hook (805) of the second connecting ring (802) engages with the first locking block (803) of the first connecting ring (801), and the second locking block (809) of the second connecting ring (802) engages with the first hook (804) of the first connecting ring (801).

2. The keyhole punching machine according to claim 1, characterized in that, An L-shaped plate (807) is rotatably connected to the fixing block (806), and the L-shaped plate (807) abuts against the outer wall of the second connecting ring (802); the second connecting ring (802) is also threaded with a bolt (808) for locking the L-shaped plate (807).

3. A keyhole punching machine according to claim 1, characterized in that, The upper surface of the machine body (1) is fixedly connected to a worktable (10), and the worktable (10) is provided with a limiting component (9) for positioning the workpiece.

4. A keyhole punching machine according to claim 3, characterized in that, The limiting component (9) includes a limiting plate (904) and a second slider (906) fixedly connected to the lower end of the limiting plate (904); the upper surface of the worktable (10) is provided with a groove (905) for the second slider (906) to slide.

5. A keyhole punching machine according to claim 4, characterized in that, The limiting component (9) includes a cylinder (901), the output end of which passes through the fixing plate (902) and is connected to the limiting plate (904). One end of the telescopic rod (903) is connected to the fixing plate (902), and the other end is connected to the limiting plate (904).

6. A keyhole punching machine according to claim 5, characterized in that, A support plate (11) is fixedly connected to the outer wall of the machine body (1). The cylinder (901) is fixed inside the support plate (11). A fixing plate (902) is fixedly connected to the outer wall of the machine body (1) on the side close to the worktable (10). The output end of the cylinder (901) passes through the fixing plate (902) and is fixedly connected to the outer wall of the limiting plate (904).

7. A keyhole punching machine according to claim 1, characterized in that, A hydraulic cylinder (2) is fixedly connected to the top of the machine body (1). A fixed platform (4) is fixedly installed on the outer wall of the hydraulic cylinder (2). The electric slide rail (6) and the motor (5) used to drive the first slider (7) are both installed on the fixed platform (4).

8. A keyhole punching machine according to claim 7, characterized in that, The outer wall of the fuselage (1) is provided with a heat dissipation mesh (3).

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