A punching machine

Abstract

The utility model belongs to punching equipment technical field especially relates to a punch press, including the frame of installing workstation and through being provided with drive mechanism lifting type sliding connection on the frame, and located the machine head above the workstation, and install the punch mechanism on the machine head, including support, install the punch on the support and the pressure block of sliding connection on the support, install the stamping die on the workstation, set up with punch mechanism corresponding, and open with punch adaptation's guide hole, install the flattening mechanism in the guide hole simultaneously, is used for the hole forming, to the hole edge carries out the flattening, wherein, the first through -hole of punch adaptation is opened in the pressure block, and the punch is slidingly connected in the first through -hole, and can eject the pressure block, through installing the flattening mechanism in the guide hole of punch adaptation in the stamping die, after the hole forming, the bending of the hole edge is flattened through the flattening mechanism, to avoid causing the cutting and so on security hidden danger in use or subsequent processing process.

Description

Technical Field

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

[0002] A punching machine is a machine tool that uses a power-driven punch to impact a workpiece, thereby forming a hole in a specific location. It can punch various materials such as metal and plastic.

[0003] When traditional punching machines punch thin metal sheets, the deformation during punching is more obvious due to the thinness of the sheet, resulting in a bent edge at the edge of the hole. Although improving the punching accuracy can alleviate the bent edge phenomenon to some extent, even a very small bent edge may cause safety hazards such as cuts during use or subsequent processing. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned technical problems by providing a punching machine tool that can flatten the curved edges formed on the hole after punching.

[0005] In view of this, the present invention provides a punching machine tool, comprising:

[0006] The frame is equipped with a worktable;

[0007] The machine head is slidably connected to the frame via a drive mechanism and is located above the worktable;

[0008] A punch mechanism is mounted on a machine head and includes a bracket, a punch mounted on the bracket, and a pressure block slidably connected to the bracket.

[0009] The stamping die is mounted on the worktable and is set in relation to the punch mechanism, and has a guide hole that is coaxial with the punch.

[0010] A flattening mechanism is installed inside the guide hole and is used to flatten the edge of the hole after the hole is formed;

[0011] The pressure block has a first through hole adapted to the punch, and the punch is slidably connected in the first through hole and can push out the pressure block.

[0012] In the above technical solution, further:

[0013] The diameter of the first through hole is smaller than the diameter of the guide hole, and a pressure plate is formed on the side surface of the pressure block near the inner wall of the first through hole.

[0014] In the above technical solution, the flattening mechanism further includes:

[0015] The piston is slidably mounted inside the guide hole;

[0016] The top block is slidably installed in the guide hole, and a first elastic element is provided between it and the piston;

[0017] The hydraulic system, installed inside the frame, is used to fill or release hydraulic oil into the guide hole;

[0018] Among them, the top block is flush with the surface of the stamping die under the action of the first elastic element.

[0019] In the above technical solution, further:

[0020] The piston includes a piston head and a cylinder mounted on the side of the piston head near the top block;

[0021] The top block has a countersunk hole that fits the column, and the first elastic element is installed in the countersunk hole.

[0022] In the above technical solution, further:

[0023] The hydraulic system includes a main pipe located below the piston and connected to a guide hole, as well as a charging pipe and a releasing pipe connected in parallel.

[0024] The filling and releasing pipes are equipped with control valves for controlling their opening and closing.

[0025] In the above technical solution, further:

[0026] The control valve includes a valve body and a first valve core and a second valve core installed in the valve body and located in the filling pipe and the release pipe respectively, and a connecting rod for synchronous rotation between the first valve core and the second valve core is provided;

[0027] The first valve core is connected to a drive motor, and the first valve core and the second valve core are respectively provided with second through holes that are perpendicular to each other.

[0028] In the above technical solution, further:

[0029] The pressure block is equipped with a sliding rod, and the sliding rod passes through the bracket to form a ring-shaped protrusion;

[0030] A second elastic element is provided between the pressure block and the support.

[0031] Furthermore, the above technical solution also includes:

[0032] The hopper is installed on the side of the stamping die and is set at an angle;

[0033] The highest point of the discharge hopper is lower than the top surface of the stamping die.

[0034] The beneficial effects of this utility model are as follows:

[0035] 1. By installing a flattening mechanism in the guide hole that matches the punch in the stamping die, the bent edge of the hole is flattened after the hole is formed, thereby avoiding safety hazards such as cuts during use or subsequent processing.

[0036] 2. By making the diameter of the through hole smaller than that of the guide hole, a pressure plate can be formed on the surface of the pressure block, which facilitates the flattening mechanism to flatten the bent edge, while ensuring the flatness of the hole edge, and further avoiding safety hazards such as cuts during use or subsequent processing.

[0037] 3. By using a hydraulic system to provide power, the piston is pushed to flatten the bent edge of the hole by passing through the top block. The structure is simple and uses hydraulic pressure to provide sufficient pressing force to effectively flatten the bent edge of the hole. The first elastic element between the piston and the top block can facilitate the punch pushing the top block to compress the first elastic element and enter the guide hole during punching, thus ensuring the punching of the punch.

[0038] 4. By setting the feeding hopper on the side of the stamping die and tilting it, after punching and bending, the punched round waste is placed on the surface of the stamping die under the action of the top block. It moves with the sheet metal when it is moved and falls into the feeding hopper after it is removed from the stamping die, making the operation convenient. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of this utility model;

[0040] Figure 2 This is a front view of the present invention;

[0041] Figure 3 This is a utility model Figure 2 Sectional view at point AA;

[0042] Figure 4 This is a utility model Figure 3 Enlarged view of point B in the middle;

[0043] Figure 5 This is a utility model Figure 3 Enlarged view of point C in the middle;

[0044] Figure 6 This is a partial schematic diagram of the punch mechanism of this utility model when it just comes into contact with the stamping die;

[0045] The markings in the diagram represent: 1. Frame; 2. Workbench; 3. Machine head; 4. Drive mechanism; 5. Punch mechanism; 50. Support; 51. Punch; 52. Pressure block; 53. First through hole; 54. Slide rod; 55. Annular protrusion; 56. Second elastic element; 6. Stamping die; 60. Guide hole; 7. Flattening mechanism; 70. Piston; 71. Top block; 72. First elastic element; 73. Hydraulic system; 730. Main pipe; 731. Filling pipe; 732. Release pipe; 733. Valve body; 734. First valve core; 735. Second valve core; 736. Connecting rod; 737. Drive motor; 738. Second through hole; 74. Column; 75. Countersunk hole; 8. Pressure platform; 9. Feed hopper. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0047] Example 1:

[0048] This embodiment provides a punching machine tool, including:

[0049] Frame 1, with workbench 2 installed;

[0050] The machine head 3 is slidably connected to the frame 1 via a drive mechanism 4 and is located above the worktable 2;

[0051] The punch mechanism 5 is mounted on the machine head 3 and includes a bracket 50, a punch 51 mounted on the bracket 50, and a pressure block 52 slidably connected to the bracket 50.

[0052] The stamping die 6 is mounted on the worktable 2 and is set in relation to the punch mechanism 5, and has a guide hole 60 that is coaxial with the punch 51.

[0053] The flattening mechanism 7 is installed in the guide hole 60 and is used to flatten the edge of the hole after the hole is formed;

[0054] The pressure block 52 has a first through hole 53 adapted to the punch 51, and the punch 51 is slidably connected in the first through hole 53 and can push out the pressure block 52.

[0055] Meanwhile, the drive mechanism 4 can be electrically driven or hydraulically driven, which is the conventional power drive of traditional punching machine tools, and will not be elaborated here.

[0056] As can be seen from this embodiment, by installing a flattening mechanism 7 in the guide hole 60 that is compatible with the punch 51 in the stamping die 6, the bent edge of the hole is flattened by the flattening mechanism 7 after the hole is formed, thereby avoiding safety hazards such as cuts during use or subsequent processing.

[0057] Furthermore, by setting the pressure block 52, the plate is fixed by the pressure block 52 before punching the plate, and then the punch 51 passes through the first through hole 53 to punch the plate, which can effectively improve the stability and accuracy of punching the plate.

[0058] Example 2:

[0059] This embodiment provides a punching machine tool, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0060] The diameter of the first through hole 53 is smaller than the diameter of the guide hole 60, and the pressure block 52 forms a pressure bearing platform 8 on the side surface close to the inner wall of the first through hole 53.

[0061] The diameter of the first through hole 53 is 1-2 mm smaller than the diameter of the guide hole 60.

[0062] As can be seen from this embodiment, by making the diameter of the through hole smaller than the diameter of the guide hole 60, a pressure plate 8 can be formed on the surface of the pressure block 52, which facilitates the flattening mechanism 7 to flatten the bent edge, while ensuring the flatness of the hole edge, and further avoiding safety hazards such as cuts during use or subsequent processing.

[0063] Furthermore, the specific diameter is only 1-2mm smaller, which can avoid the formation of large hole edges during punching, ensuring the efficiency and effect of flattening and guaranteeing product quality.

[0064] Example 3:

[0065] This embodiment provides a punching machine tool, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the flattening mechanism 7 includes:

[0066] Piston 70 is slidably mounted in guide hole 60;

[0067] The top block 71 is slidably installed in the guide hole 60, and a first elastic element 72 is provided between it and the piston 70;

[0068] The hydraulic system 73 is installed inside the frame 1 and is used to fill or release hydraulic oil into the guide hole 60;

[0069] Among them, the top block 71 is flush with the surface of the stamping die 6 under the action of the first elastic element 72;

[0070] Meanwhile, the piston 70 and the inner wall of the guide hole 60 are sealed together. Specifically, a sealing ring or other methods can be used, which is the setting of the traditional piston 70. It will not be described in detail here. The first elastic element 72 can be a rubber block or a spring.

[0071] As can be seen from this embodiment, by using a hydraulic system 73 to provide power, the piston 70 is pushed to flatten the bent edge of the hole by the top block 71. The structure is simple, and the use of hydraulics provides sufficient pressing force to effectively flatten the bent edge of the hole. The first elastic element 72 between the piston 70 and the top block 71 can facilitate the punch 51 to push the top block 71 to compress the first elastic element 72 and enter the guide hole 60 during punching, thus ensuring the punching of the punch 51.

[0072] Example 4:

[0073] This embodiment provides a punching machine tool, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0074] The piston 70 includes a piston head and a column 74 mounted on the side of the piston head near the top block 71;

[0075] The top block 71 has a countersunk hole 75 that is adapted to the column 74, and the first elastic element 72 is installed in the countersunk hole 75.

[0076] The cylinder 74 and piston 70 are integrated into one piece.

[0077] As can be seen from this embodiment, by setting the column 74 and the countersunk hole 75, the stability of the relative sliding between the piston 70 and the top block 71 in the guide hole 60 can be effectively improved, and the installation of the first elastic member 72 in the countersunk hole 75 can have a stabilizing effect on the installation of the first elastic member 72.

[0078] Furthermore, regardless of whether it is a rubber block or a spring, the shape recovery ability of the material will decrease with the time and number of uses. Therefore, it will be impossible to keep the top block 71 flush with the surface of the stamping die 6 under the action of the first elastic element 72. Therefore, the first elastic element 72 needs to be replaced. The setting of the first elastic element 72 being installed in the countersunk hole 75 allows the two ends of the first elastic element 72 not to be fixedly connected to the top block 71 and the piston 70, but only to abut against each other, thus improving the convenience of replacement.

[0079] Example 5:

[0080] This embodiment provides a punching machine tool, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0081] The hydraulic system 73 includes a main pipe 730 located below the piston 70 and communicating with the guide hole 60, as well as a charging pipe 731 and a releasing pipe 732 arranged in parallel.

[0082] Control valves for controlling opening and closing are provided on the filling pipe 731 and the releasing pipe 732.

[0083] Meanwhile, the hydraulic system 73 also includes a power component and a hydraulic oil tank, which are the basic components of a conventional hydraulic system 73, and will not be described in detail here.

[0084] As can be seen from this embodiment, by using the main pipe 730 and the parallel filling pipe 731 and releasing pipe 732, only a single pipe is connected to the guide hole 60, which makes it easy to set the main pipe 730 and the guide hole 60 coaxially, thereby facilitating the stability and balance of the hydraulic oil pushing the piston 70.

[0085] Both the filling pipe 731 and the releasing pipe 732 are equipped with control valves for controlling their opening and closing, which facilitates the adjustment of their opening and closing and ensures the drive control of the flattening mechanism 7.

[0086] Example 6:

[0087] This embodiment provides a punching machine tool, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0088] The control valve includes a valve body 733 and a first valve core 734 and a second valve core 735 installed in the valve body 733 and located in the filling pipe 731 and the release pipe 732 respectively. A connecting rod 736 for synchronous rotation of the first valve core 734 and the second valve core 735 is provided between the first valve core 734 and the second valve core 735.

[0089] The first valve core 734 is connected to a drive motor 737, and the first valve core 734 and the second valve core 735 are respectively provided with second through holes 738 that are perpendicular to each other.

[0090] Meanwhile, the drive motor 737 can be remotely controlled. Its specific structure is based on existing technology, that is, the traditional drive motor 737 that can be remotely controlled is sufficient, and will not be described in detail here.

[0091] As can be seen from this embodiment, by connecting the first valve core 734 and the second valve core 735 through the connecting rod 736, the two can rotate synchronously. Furthermore, the second through holes 738 for conduction in the first valve core 734 and the second valve core 735 are arranged perpendicular to each other. Therefore, only a single drive motor 737 is required. Driven by the drive motor 737, the first valve core 734 and the second valve core 735 can be opened and closed alternately, thereby simplifying the control method for filling or draining hydraulic oil into the guide hole 60 and improving convenience.

[0092] Example 7:

[0093] This embodiment provides a punching machine tool, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0094] The pressure block 52 is provided with a slide rod 54, and the slide rod 54 passes through the bracket 50 to form an annular protrusion 55;

[0095] A second elastic element 56 is provided between the pressure block 52 and the bracket 50;

[0096] Meanwhile, the second elastic element 56 can be a spring and is sleeved on the slide rod 54. The annular protrusion 55 on the slide rod 54 and the slide rod 54 are integrated. The slide rod 54 and the pressure block 52 are connected by a plug and locked by bolts.

[0097] As can be seen from this embodiment, the second elastic element 56 facilitates the application of force to the pressure block 52. Based on the applied force and the weight of the pressure block 52 itself, the flattening mechanism 7 effectively flattens the bent edge of the hole.

[0098] The use of annular protrusion 55 at one end of slide rod 54 and the insertion connection between slide rod 54 and pressure block 52 facilitates the adjustment of the distance between bracket 50 and pressure block 52, thereby ensuring the flatness of pressure block 52 installation, ensuring that punch 51 slides vertically in the first through hole 53, and ensuring that punch 51 punches the plate.

[0099] Example 8:

[0100] This embodiment provides a punching machine tool, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and further includes:

[0101] The feeding hopper 9 is installed on the side of the stamping die 6 and is set at an angle;

[0102] Among them, the highest point of the feeding hopper 9 is lower than the top surface of the stamping die 6;

[0103] Meanwhile, the hopper 9 and the side of the stamping die 6 can be fastened with bolts, and bolts are provided on both sides of the stamping die 6.

[0104] As can be seen from this embodiment, by setting the feeding hopper 9 on the side of the stamping die 6 and tilting it, and making the highest point of the feeding hopper 9 lower than the top surface of the stamping die 6, after punching is completed and the edge is bent and flattened, the punched round waste is placed on the surface of the stamping die 6 under the action of the top block 71, so that it moves with the plate when the plate moves, and falls into the feeding hopper 9 after being removed from the stamping die 6, making the operation convenient.

[0105] Furthermore, the stamping die 6 is set on both sides, which ensures that the circular waste can be unloaded no matter which side the workpiece moves to, further improving convenience.

[0106] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A punching machine tool, characterized in that, include: The frame (1) is equipped with a workbench (2); The machine head (3) is lifted and slidably connected to the frame (1) by a drive mechanism (4) and is located above the worktable (2); The punch mechanism (5) is mounted on the machine head (3) and includes a bracket (50), a punch (51) mounted on the bracket (50), and a pressure block (52) slidably connected to the bracket (50). The stamping die (6) is installed on the workbench (2) and is set in relation to the punch mechanism (5), and has a guide hole (60) that is coaxial with the punch (51). A flattening mechanism (7) is installed in the guide hole (60) and is used to flatten the edge of the hole after the hole is formed; The pressure block (52) has a first through hole (53) adapted to the punch (51), and the punch (51) is slidably connected in the first through hole (53) and can push out the pressure block (52).

2. The punching machine tool according to claim 1, characterized in that: The diameter of the first through hole (53) is smaller than the diameter of the guide hole (60), and the pressure block (52) forms a pressure plate (8) on the side surface of the inner wall of the first through hole (53).

3. The punching machine tool according to claim 2, characterized in that, The flattening mechanism (7) includes: The piston (70) is slidably mounted in the guide hole (60); The top block (71) is slidably installed in the guide hole (60) and a first elastic element (72) is provided between it and the piston (70). A hydraulic system (73) is installed inside the frame (1) and is used to fill or release hydraulic oil into the guide hole (60); The top block (71) is flush with the surface of the stamping die (6) under the action of the first elastic element (72).

4. The punching machine tool according to claim 3, characterized in that: The piston (70) includes a piston (70) head and a column (74) mounted on the side of the piston (70) head near the top block (71). The top block (71) has a countersunk hole (75) adapted to the column (74), and the first elastic element (72) is installed in the countersunk hole (75).

5. The punching machine tool according to claim 3, characterized in that: The hydraulic system (73) includes a main pipe (730) located below the piston (70) and communicating with the guide hole (60), as well as a charging pipe (731) and a releasing pipe (732) arranged in parallel. The filling pipe (731) and the releasing pipe (732) are equipped with control valves for controlling their opening and closing.

6. The punching machine tool according to claim 5, characterized in that: The control valve includes a valve body (733) and a first valve core (734) and a second valve core (735) installed in the valve body (733) and located in the filling pipe (731) and the releasing pipe (732) respectively. A connecting rod (736) for synchronous rotation of the first valve core (734) and the second valve core (735) is provided between the first valve core (734) and the second valve core (735). The first valve core (734) is connected to a drive motor (737), and the first valve core (734) and the second valve core (735) are respectively provided with second through holes (738) arranged perpendicularly to each other.

7. The punching machine tool according to claim 1, characterized in that: The pressure block (52) is provided with a slide rod (54), and the slide rod (54) passes through the bracket (50) to form an annular protrusion (55); A second elastic element (56) is provided between the pressure block (52) and the bracket (50).

8. The punching machine tool according to claim 1, characterized in that, Also includes: The feeding hopper (9) is installed on the side of the stamping die (6) and is set at an angle; The highest point of the feeding hopper (9) is lower than the top surface of the stamping die (6).

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