Die drilling and broaching device

Abstract

The utility model discloses a die drilling and broaching device, and relates to the technical field of plate processing, in particular to a die drilling and broaching device which comprises an upper die and a lower die, a plurality of guide columns are fixedly connected onto the lower die, the upper die is movably connected onto the guide columns, and a pre-punching head, a fine punching head and a polishing head are mounted on the lower surface of the upper die. The grinding head can conduct rotary grinding, the middle of the upper surface of the lower die is movably sleeved with a switching base capable of conducting rotary switching, a plurality of punched holes corresponding to the pre-punching head, the fine punching head and the grinding head are formed in the switching base, a falling groove communicated with the punched holes is formed in the lower die, and a falling collecting frame is installed at the bottom end of the falling groove. And a dust collection mechanism is mounted on the outer side of the falling collection frame. According to the die counterboring and broaching device, the switching base can rotate under the driving of the output shaft of the first motor, and under the driving of the switching base, after pre-punching machining is conducted on a plate, fine punching machining can be rapidly conducted on the plate.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet metal processing, and specifically relates to a die salad hole punching device. Background Art

[0002] Today, with the rapid development of precision stamping, saving manufacturing costs and improving processing efficiency is an important concept that needs to be put into action. In the sheet metal die stamping technology, the salad punching process with high requirements for the dimensional accuracy of the bottom hole is often encountered. If the pre-hole is punched first and then the salad punching is completed by the ordinary stamping process; due to the fiber directionality of the sheet metal, the roundness of the bottom hole obtained by extrusion is usually not enough, let alone the dimensional accuracy requirements. Therefore, the pre-hole is punched first (leaving the stamping allowance), then the salad is punched by the ordinary process, and finally the bottom hole is fine-punched; although this process can solve the problem of the bottom hole accuracy, since an additional process is added, it requires two times of processing. After the pre-processing, it is taken down and placed at the fine-processing place for fine punching. However, in this process, due to the taking-down and re-placement, a large amount of time is wasted and the processing efficiency is reduced. Therefore, we propose a die salad hole punching device. Summary of the Utility Model

[0003] The utility model provides a die salad hole punching device, which solves the problems raised in the above background art.

[0004] To achieve the above purpose, the utility model is realized through the following technical solutions: A die salad hole punching device includes an upper die and a lower die. A plurality of guide columns are fixedly connected to the lower die, and the upper die is movably connected to the guide columns. A pre-punch head, a fine-punch head, and a grinding head are installed on the lower surface of the upper die. The grinding head can rotate for grinding. A rotatable and switchable switching seat is movably sleeved in the middle of the upper surface of the lower die. A plurality of punching holes corresponding to the pre-punch head, the fine-punch head, and the grinding head are opened on the switching seat. A falling groove communicated with the punching holes is opened in the lower die, and a collecting frame is installed at the bottom end of the falling groove. A dust suction mechanism is installed on the outside of the collecting frame.

[0005] Optionally, the pre-punch head includes a chamfered part and a punching part connected up and down. The punching part is cylindrical, and the chamfered part is a frustum-shaped part with the same diameter as the punching part at the lower end and gradually expanding upward in diameter. The punching part corresponds to the punching hole. At the same time, the grinding head corresponds to the pre-punch head, and sandpaper is provided on the outside of the grinding head.

[0006] Optionally, a first motor is fixedly installed inside the lower die, and the output shaft of the first motor is vertically upward and connected to the center of the bottom of the switching seat.

[0007] Optionally, a third motor is fixedly installed inside the upper die, and the output shaft of the third motor is vertically downward and connected to the top end of the grinding head.

[0008] Optionally, a plurality of positioning columns located around the punching are fixedly connected to the switching base. A support sleeve is movably connected to the outer side of the positioning column. The bottom end of the support sleeve extends into the switching base and is fixedly connected to a spring. The bottom end of the spring is fixed to the inside of the switching base.

[0009] Optionally, an L-shaped tooth is fixedly connected to the top end of the colony frame, and the tooth is rotationally and detachably connected to the lower die.

[0010] Optionally, a bracket is fixedly connected to the inner wall of the middle of the bottom of the lower die. A fan is movably sleeved on the bracket. A gear is connected to the bracket through a pin. The gear meshes with an external tooth ring, and the external tooth ring is fixed to the fan.

[0011] Optionally, a second motor is fixedly installed in the lower die. The output shaft of the second motor is connected to a runner. The runner is connected to the inside of the lower die through a pin, and a transmission belt passing through the bracket is sleeved between the gear and the runner.

[0012] The utility model has the following beneficial effects:

[0013] 1. For the salad hole punching device of this mold, driven by the output shaft of the first motor, the switching base can rotate. Driven by the switching base, after the sheet is processed by the pre-punch, it can be quickly processed by the fine punch, and multiple sheets can be processed by the pre-punch, fine punch, and grinding head, thereby improving the processing efficiency.

[0014] 2. For the salad hole punching device of this mold, under the action of the self-weight of the sheet, the support sleeve can move downward, and under the action of the elastic force of the spring, the support sleeve can support the sheet, so that when the sheet is transported, the friction of the sheet can be effectively avoided, and the sheet can be positioned under the limitation of the positioning column. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the utility model;

[0016] Figure 2 is a schematic cross-sectional structural diagram of the utility model;

[0017] Figure 3 is a schematic structural diagram of the connection of the colony frame of the utility model;

[0018] Figure 4 is a schematic structural diagram of the connection of the external tooth ring of the utility model;

[0019] Figure 5 is a schematic structural diagram of the connection of the switching base of the utility model;

[0020] Figure 6Schematic structural diagram of the connection of the support sleeve of the present utility model;

[0021] Figure 7 Schematic structural diagram of the connection of the grinding head of the present utility model.

[0022] In the figure: 1, upper die; 2, lower die; 3, guide post; 4, pre-punching head; 5, fine punching head; 6, grinding head; 7, switching seat; 8, punching hole; 9, first motor; 10, chute; 11, bracket; 12, fan; 13, chip collection frame; 14, runner; 15, second motor; 16, engaging teeth; 17, transmission belt; 18, gear; 19, external tooth ring; 20, positioning post; 21, support sleeve; 22, spring; 23, third motor. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 to 5 , a die device for making salad holes, including an upper die 1 and a lower die 2. A plurality of guide posts 3 are fixedly connected to the lower die 2, and the upper die 1 is movably connected to the guide posts 3. A pre-punching head 4, a fine punching head 5, and a grinding head 6 are installed on the lower surface of the upper die 1. Through the pre-punching head 4, ordinary punching can be performed and pre-punching holes can be made. At the same time, the pre-punching head 4 can make salad holes. Under the action of the fine punching head 5, fine punching holes can be made, and under the drive of the rotation of the grinding head 6, it can be ground. The grinding head 6 can rotate for grinding. A rotatable and switchable switching seat 7 is movably sleeved in the middle of the upper surface of the lower die 2, so as to realize multi-station processing of different processes for multiple plates. A plurality of punching holes 8 corresponding to the pre-punching head 4, the fine punching head 5, and the grinding head 6 are provided on the switching seat 7, and a chute 10 communicating with the punching holes 8 is provided in the lower die 2. A chip collection frame 13 is installed at the bottom end of the chute 10, and a dust collection mechanism is installed outside the chip collection frame 13. Under the action of the dust collection mechanism, the waste chips can be sucked into the chip collection frame 13.

[0025] Please refer to Figures 1 to 5 , the pre-punching head 4 includes a chamfered portion and a punching portion connected up and down. The punching portion is cylindrical, and the chamfered portion is a frustum-shaped cone with the same diameter as the punching portion at the lower end and gradually expanding upward in diameter. And the punching portion corresponds to the punching hole 8, so that the pre-punching head 4 can punch holes and make salad holes in the plate. At the same time, the grinding head 6 corresponds to the pre-punching head 4, and sandpaper is provided on the outside of the grinding head 6.

[0026] Please refer toFigures 1 to 2 , a first motor 9 is fixedly installed inside the lower die 2. The output shaft of the first motor 9 is vertically upward and connected to the center of the bottom of the switching seat 7. Driven by the output shaft of the first motor 9, the switching seat 7 can rotate to switch the working positions for sheet processing. The first motor 9 is a prior art and will not be elaborated here.

[0027] Please refer to Figures 1 to 7 , a third motor 23 is fixedly installed inside the upper die 1. The output shaft of the third motor 23 is vertically downward and connected to the top of the grinding head 6. Driven by the output shaft of the third motor 23, the grinding head 6 can rotate for grinding. The first motor 9 is a prior art and will not be elaborated here.

[0028] Please refer to Figures 1 to 6 , a plurality of positioning columns 20 are fixedly connected to the switching seat 7 around the punching holes 8. Under the limitation of the positioning columns 20, the sheet can be positioned. The outer side of the positioning column 20 is movably connected with a support sleeve 21. The support sleeve 21 can move along a fixed track relatively. The bottom end of the support sleeve 21 extends into the switching seat 7 and is fixedly connected with a spring 22. The bottom end of the spring 22 is fixed to the inside of the switching seat 7. Under the action of the elastic force of the spring 22, the support sleeve 21 can support the sheet.

[0029] Please refer to Figures 1 to 6 , an L-shaped tooth 16 is fixedly connected to the top end of the collecting frame 13. The tooth 16 is rotationally clamped with the lower die 2. Then the fan 12 can be inserted and rotated so that the tooth 16 can be clamped, and thus the fan 12 can be installed.

[0030] Please refer to Figures 1 to 5 , a bracket 11 is fixedly connected to the inner wall of the middle of the bottom of the lower die 2. A fan 12 is movably sleeved on the bracket 11. The fan 12 can move at a fixed position on the bracket 11. A gear 18 is connected to the bracket 11 through a shaft pin. The gear 18 can rotate at a fixed position on the fan 12 with the shaft pin as the rotation axis. The gear 18 meshes with an external tooth ring 19. Driven by the rotation of the gear 18, the external tooth ring 19 can rotate. The external tooth ring 19 is fixed to the fan 12. Driven by the rotation of the external tooth ring 19, the fan 12 can rotate.

[0031] Please refer to Figures 1 to 5, a second motor 15 is fixedly installed inside the lower die 2. The output shaft of the second motor 15 is connected to a runner 14. Driven by the output shaft of the second motor 15, the runner 14 can rotate. The second motor 15 is a prior art and will not be elaborated here. The runner 14 is connected inside the lower die 2 through a pin. The runner 14 can rotate at a fixed position on the lower die 2 with the pin as the rotation axis. And a transmission belt 17 passing through the bracket 11 is sleeved between the gear 18 and the runner 14. Through the transmission of the transmission belt 17, the runner 14 can drive the gear 18 to rotate.

[0032] In summary, for the salad hole punching device of this mold, during use, the plate is inserted on the positioning post 20. Under the action of the gravity of the plate, the support sleeve 21 can move downward. Then the upper die 1 moves downward for mold closing. The pre-punch 4 punches the plate to make a salad hole, and the fine punch 5 punches it finely. The grinding head 6 rotates and grinds driven by the output shaft of the third motor 23. Driven by the output shaft of the first motor 9, the switching seat 7 can rotate and switch. Driven by the output shaft of the second motor 15, the runner 14 rotates. And through the transmission of the transmission belt 17, the gear 18 can drive the external gear ring 19 to rotate, and then the fan 12 can rotate to suck the waste chips in the chute 10 and make them fall into the fan 12.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Moreover, the terms "include", "comprise" or any other variation 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 also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A device for punching salad holes in a mold, comprising an upper mold (1) and a lower mold (2). A plurality of guide columns (3) are fixedly connected to the lower mold (2), and the upper mold (1) is movably connected to the guide columns (3). It is characterized in that: A preliminary punch (4), a fine punch (5), and a grinding head (6) are installed on the lower surface of the upper die (1). The grinding head (6) can rotate for grinding. A rotatable and switchable switching seat (7) is movably sleeved in the middle of the upper surface of the lower die (2). A plurality of punching holes (8) corresponding to the preliminary punch (4), the fine punch (5), and the grinding head (6) are formed in the switching seat (7). A falling groove (10) communicating with the punching holes (8) is formed in the lower die (2). A collecting frame (13) is installed at the bottom end of the falling groove (10). A dust suction mechanism is installed outside the collecting frame (13).

2. The salad hole punching device for a mold according to claim 1, characterized in that: The preliminary punch (4) includes a chamfered portion and a punching portion connected up and down. The punching portion is cylindrical. The chamfered portion is a frustum-shaped cone with the same diameter as the punching portion at the lower end and gradually expanding upward in diameter. The punching portion corresponds to the punching hole (8). At the same time, the grinding head (6) corresponds to the preliminary punch (4), and abrasive paper is provided on the outside of the grinding head (6).

3. The salad hole punching device for a mold according to claim 2, characterized in that: A first motor (9) is fixedly installed inside the lower die (2). The output shaft of the first motor (9) is vertically upward and connected to the center of the bottom of the switching seat (7).

4. The salad hole punching device for a mold according to claim 3, characterized in that: A third motor (23) is fixedly installed inside the upper die (1). The output shaft of the third motor (23) is vertically downward and connected to the top end of the grinding head (6).

5. The salad hole punching device for a mold according to claim 4, characterized in that: A plurality of positioning columns (20) are fixedly connected to the switching seat (7) around the punching holes (8). A support sleeve (21) is movably connected to the outside of the positioning columns (20). The bottom end of the support sleeve (21) extends into the switching seat (7) and is fixedly connected to a spring (22). The bottom end of the spring (22) is fixed to the inside of the switching seat (7).

6. The salad hole punching device for a mold according to claim 5, wherein: An L-shaped tooth (16) is fixedly connected to the top end of the collecting frame (13). The tooth (16) is rotationally clamped with the lower die (2).

7. A salad hole punching device for a mold according to claim 6, characterized in that: A bracket (11) is fixedly connected to the inner wall of the middle of the bottom of the lower die (2). A fan (12) is movably sleeved on the bracket (11). A gear (18) is connected to the bracket (11) through a pin. The gear (18) meshes with an external tooth ring (19). The external tooth ring (19) is fixed to the fan (12).

8. A salad hole punching device for a mold according to claim 7, characterized in that: A second motor (15) is fixedly installed inside the lower die (2). The output shaft of the second motor (15) is connected to a runner (14). The runner (14) is connected to the inside of the lower die (2) through a pin. A transmission belt (17) passing through the bracket (11) is sleeved between the gear (18) and the runner (14).

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