Pot punching equipment

Abstract

Cookware punching equipment relates to the technical field of metal stamping and comprises a pre-cutting mechanism and a punching mechanism, the pre-cutting mechanism is provided with a cutting drill bit, a cutting driving assembly and an advancing and retreating driving assembly, the advancing and retreating driving assembly drives the cutting drill bit to advance or retreat to approach or leave a punched cookware, and the cutting driving assembly drives the cutting drill bit to rotate to cut the cookware. The cutting drill bit cuts the cookware to form an annular pre-cutting groove in the cookware, and then the punching mechanism punches the area in the pre-cutting groove to form a punched hole. Firstly, the cutting drill is used for cutting the cookware to form an annular pre-cutting groove, the wall thickness of a punched hole is reduced, then the punching mechanism is used for punching to form the punched hole, a certain depth is cut at the edge of the punched hole in advance, the wall thickness needing to be punched during punching is reduced, at the moment, too large pressure is not needed for punching the cookware, and the punching efficiency is improved. Therefore, cracks are not easy to generate around the punched holes, and the quality of the cookware is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of metal stamping, and in particular to a cookware punching device. Background Art

[0002] The pot punching equipment is a mechanical device specially used for punching holes in pots and is commonly used in the manufacture of kitchen utensils. This equipment is used to punch holes in the pot wall so that handles or other accessories can be installed. For pots of normal thickness, a punch is usually used to punch holes directly in the pot wall. However, for pots with thicker walls, harder and more brittle materials, if traditional stamping technology is still used for direct processing, the required stamping force becomes larger. Pots with thicker walls, harder and more brittle materials are prone to cracks when subjected to strong stamping. These cracks may be very small and difficult to detect, which in turn affects the quality of the pot. Summary of the invention

[0003] In view of this, the present invention provides a cookware punching device, which is used to punch holes in a cookware with a thick wall, a hard material and a brittle material, so that cracks are not easily generated in the cookware.

[0004] To achieve the above objectives, the present invention provides the following technical solutions.

[0005] The pot punching device comprises a pre-cutting mechanism and a punching mechanism. The pre-cutting mechanism is provided with a cutting drill bit, a cutting drive assembly and an advance and retreat drive assembly. The advance and retreat drive assembly drives the cutting drill bit to advance or retreat to approach or move away from the pot to be punched. The cutting drive assembly drives the cutting drill bit to rotate to cut the pot. The cutting drill bit cuts the pot to form a circular pre-cut groove in the pot. The punching mechanism then punches the area in the pre-cut groove to form a punched hole.

[0006] First, the cookware is cut with a cutting drill to form a circular pre-cut groove to reduce the wall thickness of the punching hole, and then the punching mechanism is used to punch to form the punching hole. Since a certain depth is cut at the edge of the punching hole in advance, the wall thickness that needs to be punched during punching becomes thinner. At this time, stamping the cookware does not require too much pressure, so it is not easy to produce cracks around the punching hole, ensuring the quality of the cookware.

[0007] Furthermore, the cutting drill bit is hollow to form a receiving cavity, and the punching mechanism is provided with a punch, which is arranged in the receiving cavity and can move forward or backward. The punch moves forward and extends from the cutting drill bit to punch the cookware to form the punched hole.

[0008] Furthermore, the pot punching equipment also includes a mounting bracket, and the tail of the punch and the mounting bracket are respectively provided with a straight groove and a guide rail that match each other, so that the punch can move forward or backward along the straight groove and the guide rail, and the outer side of the punch and the inner wall of the accommodating cavity are respectively provided with threads that match each other, so that when the cutting drill bit rotates, the punch can be driven forward or backward through the threads.

[0009] Furthermore, the punch is provided with a plurality of stamping protrusions for contacting and stamping the cookware, and there are gaps between the stamping protrusions, and the gaps can accommodate the debris generated by cutting the cookware, so that the stamping protrusions can directly contact the cookware.

[0010] Furthermore, the pre-cutting mechanism also includes a chip blowing assembly, which includes an air guide hood and a chip blowing duct. The air guide hood is provided with chip blowing blades and is mounted on the outside of the cutting drill bit so that it can blow air as the cutting drill bit rotates. The chip blowing duct is provided on the cutting drill bit and connects the accommodating cavity and the air guide hood. When the cutting drill bit rotates to drive the punch backward, the chip blowing blades blow air into the accommodating cavity through the chip blowing duct to blow away the debris contained in the gap between the stamping protrusions.

[0011] Furthermore, the chip blowing assembly also includes a push rod cylinder body, a chip pusher rod and a return spring. The push rod cylinder body is fixedly connected to the air guide cover, the chip pusher rod is slidably connected to the push rod cylinder body and can be extended into and out of the chip blowing duct. The return spring is respectively connected to the chip pusher rod and the push rod cylinder body to provide elastic force for the chip pusher rod to extend into the chip blowing duct. When the cutting drill bit rotates, the chip pusher rod overcomes the elastic force of the return spring under the action of centrifuge and exits the chip blowing duct, so that the chip blowing blade can blow air into the accommodating chamber through the chip blowing duct. When the cutting drill bit stops rotating, the return spring pushes the chip pusher rod into the chip blowing duct to push out the debris that has entered the chip blowing duct.

[0012] Furthermore, the chip pushing rod is provided with a chip pushing airbag, an air charging and discharging chamber, a charging and discharging piston and a piston spring. The chip pushing airbag is located at the end of the chip pushing rod and is used to fill the chip blowing air duct. The charging and discharging chamber is connected to the chip pushing airbag. The charging and discharging piston is arranged in the charging and discharging chamber. The piston spring is connected to the charging and discharging piston so as to drive the charging and discharging piston to compress the air in the charging and discharging chamber. When the cutting drill bit rotates, the charging and discharging piston slides under the centrifugal action to overcome the elastic force of the piston spring to draw the air in the chip pushing airbag into the charging and discharging chamber. The chip pushing airbag shrinks and exits the chip blowing air duct with the chip pushing rod. When the cutting drill bit stops rotating, the chip pushing airbag extends into the chip blowing air duct with the chip pushing rod, and the piston spring pushes the charging and discharging piston to slide to press the air in the charging and discharging chamber into the chip pushing airbag, so that the chip pushing airbag expands and fills the chip blowing air duct.

[0013] Furthermore, a punch ring is provided on the edge of the end of the punch, and when the punch punches the cookware, the punch ring punches to form the edge of the punch hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the cookware punching device of the present invention.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the pre-cutting mechanism.

[0016] Figure 3 Exploded view of the pre-cutting mechanism and the punching mechanism.

[0017] Figure 4 for Figure 3 A magnified schematic diagram of center A.

[0018] Figure 5 It is a cross-sectional view of the air guide cover and the cutting drill bit.

[0019] Figure 6 A cross-sectional view of the punch.

[0020] Figure 7 It is a cross-sectional view of the pre-cutting mechanism and the punching mechanism.

[0021] Figure 8 for Figure 7 A magnified schematic diagram of point B in the middle.

[0022] Fig. 9 This is a cross-sectional view of the chip pusher.

[0023] Fig.10 It is a schematic diagram of the three-dimensional structure of the air guide cover, the ejector cylinder body and the chip ejector.

[0024] Reference numerals include: Cutting drill bit 1, accommodating cavity 11; Punch 2, punching protrusion 21, punching ring 22, chip blowing air channel 23, straight groove 24; Air guide cover 3, chip blowing blade 31, push rod cylinder 32, chip pushing push rod 33, chip pushing air bag 331, charging and discharging air cavity 332, charging and discharging piston 333, piston spring 334, return spring 34; Cutting drive assembly 4, driving gear 41, driven gear 42, driving motor 43, forward and backward driving assembly 5, driving cylinder 51, pot 6, mounting bracket 7, thread 8. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with specific embodiments.

[0026] Combination Figure 1-Figure 2The pot punching device of this embodiment includes a pre-cutting mechanism and a punching mechanism. The pre-cutting mechanism is provided with a cutting drill 1, a cutting drive assembly 4 and an advance and retreat drive assembly 5, which are all connected to a mounting bracket 7. The cutting drill 1 is rotatably connected to the mounting bracket 7 through a bearing. The cutting drive assembly 4 drives the cutting drill 1 to rotate to cut the pot 6. The advance and retreat drive assembly 5 drives the cutting drill 1 to advance or retreat to approach or move away from the punched pot 6. The cutting drive assembly 4 of this embodiment includes a driving gear 41, a driven gear 42 and a driving motor 43. The driving gear 41 is fixedly connected to the driving motor 43. The driven gear 42 is fixedly connected to the cutting drill 1 and meshes with the driving gear 41 for transmission. The driving motor 43 drives the cutting drill 1 to rotate through the meshing of the driving gear 41 and the driven gear 42. The advance and retreat drive assembly 5 includes a driving cylinder 51. The driving cylinder 51 is installed on a workbench and is fixedly connected to the mounting bracket 7 to drive the cutting drill 1 to advance or retreat. When punching a hole in the pot 6, the pot 6 is fixed by a clamp, and a punching hole is provided on the clamp. The advance and retreat drive assembly 5 drives the mounting bracket 7 to advance and approach the pot 6, and the cutting drive assembly 4 and the cutting drill bit 1 installed on the mounting bracket 7 also approach the pot 6. The cutting drill bit 1 first cuts the pot 6 to form a circular pre-cut groove in the pot 6, and the punching mechanism then punches the area in the pre-cut groove to form a punched hole.

[0027] First, the cookware 6 is cut by the cutting drill 1 to form a circular pre-cut groove to reduce the wall thickness of the punching hole, and then the punching mechanism is used to punch to form the punching hole. Since a certain depth is cut at the edge of the punching hole in advance, the wall thickness that needs to be punched during punching becomes thinner. At this time, punching the cookware 6 does not require too much pressure, so it is not easy to generate cracks around the punching hole, thereby ensuring the quality of the cookware 6.

[0028] Combination Figure 5-Figure 8 The cutting drill 1 is hollow to form a receiving chamber 11, and the punching mechanism is provided with a punch 2, which is arranged in the receiving chamber 11. The tail of the punch 2 and the mounting bracket 7 are respectively provided with a straight groove 24 and a guide rail (not shown in the figure) that match each other. The punch 2 can move forward or backward along the straight groove 24 and the guide rail. The outer side of the punch 2 and the inner wall of the receiving chamber 11 are respectively provided with threads 8 that match each other, so that the cutting drill 1 can drive the punch 2 forward or backward through the threads 8 when rotating, similar to a screw rod. When the punch 2 moves forward, it extends from the cutting drill 1 to punch the pot 6 to form the punched hole. By providing the straight groove 24 and the guide rail that match each other, the punch 2 is limited to move linearly but not to rotate, and then the threads 8 that match each other are used to drive the punch 2 forward or backward when the cutting drill 1 rotates, which simplifies the structure and saves volume, and there is no need to set a power source for the punch 2. The punch 2 is cleverly arranged in the cutting drill 1. When the cutting drill 1 completes cutting the circular groove, the punch 2 can immediately complete the punching. There is no need to remove the cutting drill 1 before punching, which simplifies the processing steps.

[0029] The cutting drill 1 will produce fine debris when cutting the pot 6. If a traditional round punch is used, the punching surface of which is flat or in a shape that fits the pot, these debris will be sandwiched between the punch 2 and the pot 6, padding the punch 2, so that the punch 2 cannot directly contact the pot 6. For the pot 6, these debris can be regarded as part of the punch 2. The distribution of these debris is random, that is, the punch 2 is different when punching holes in each pot 6, resulting in unstable punching quality and poor consistency. Figure 6 As shown, the punch 2 of this embodiment is provided with a plurality of stamping protrusions 21 for contacting and stamping the cookware 6, and a stamping ring 22 is provided at the edge of the end of the punch 2. There is a gap between each stamping protrusion 21, and the gap can accommodate the debris generated by cutting the cookware 6, so that the stamping protrusion 21 can directly contact the cookware 6. By setting the stamping surface of the punch 2 as a plurality of stamping protrusions 21, the gaps between the stamping protrusions 21 can accommodate the debris, and the debris is prevented from padding the punch 2, so that the stamping protrusion 21 can directly contact the cookware 6, thereby eliminating the influence of the debris and improving the stability and consistency of the punching quality.

[0030] As production progresses, the gaps between the stamping protrusions 21 will contain more and more debris, and when the gaps are filled, the stamping protrusions 21 will eventually be unable to directly contact the pot 6. Figure 4-Figure 5 The pre-cutting mechanism also includes a chip blowing assembly, which includes an air guide cover 3 and a chip blowing air duct 23. The air guide cover 3 is provided with a chip blowing blade 31. In this embodiment, there are 4 chip blowing blades, and the number of the blades can be adjusted according to the required blowing effect, which is not specifically limited here. The air guide cover 3 can be integrated with the cutting drill bit 1. For the convenience of display, they are disassembled here. The air guide hood 3 is sleeved on the outside of the cutting drill bit 1, so that the air guide hood 3 can rotate with the cutting drill bit 1 and blow air through the chip blowing blades 31. The chip blowing air duct 23 is provided on the cutting drill bit 1. In this embodiment, there are 4 chip blowing air ducts 23, and each chip blowing air duct 23 is connected to the accommodating cavity 11 and the air guide hood 3. After the drilling is completed, when the cutting drill bit 1 rotates to drive the punch 2 to retreat, the chip blowing blades 31 blow the air into the accommodating cavity 11 through the chip blowing air duct 23. The end face of the punch 2 is blown by the airflow when passing through the chip blowing air duct 23, so as to blow away the debris contained in the gap between the stamping protrusions 21. By setting up a chip blowing assembly, after each drilling is completed, the cutting drill bit 1 rotates in the opposite direction (the direction of rotation when cutting the cookware 6 is regarded as forward rotation), driving the punch 2 to retreat. When the punch 2 retreats, it will pass through the position of the chip blowing duct 23, generate airflow through the chip blowing blades 31, and blow it into the accommodating cavity 11 through the chip blowing duct 23, so that when the punch 2 passes through the position of the chip blowing duct 23, the debris in the gap between the stamping protrusions 21 is blown away, thereby preventing the debris from accumulating and making the stamping protrusions 21 unable to directly contact the cookware 6.

[0031] When the cutting drill 1 is rotating forward, the airflow direction generated by the chip blowing blade 31 is from inside to outside, and the airflow of the chip blowing duct 23 is from inside to outside, sucking the air in the accommodating chamber 11 to the outside. At this time, the debris generated by the cutting drill 1 may enter the chip blowing duct 23, causing the chip blowing duct 23 to be blocked. When the cutting drill 1 is reversed, the airflow cannot enter the accommodating chamber 11. Figure 7-10 The chip blowing assembly also includes a push rod cylinder 32, a push rod 33 and a return spring 34. The push rod cylinder 32 is fixedly connected to the air guide cover 3. The push rod 33 is slidably connected to the push rod cylinder 32. The push rod 33 corresponds to the chip blowing air duct 23 one by one and can extend into and out of the chip blowing air duct 23. The return spring 34 is respectively connected to the push rod 33 and the push rod cylinder 32, thereby providing the push rod 33 with elastic force to extend into the chip blowing air duct 23. When the cutting drill 1 rotates, the push rod 33 overcomes the elastic force of the return spring 34 under the centrifugal action and exits the chip blowing air duct 23, so that the chip blowing blade 31 can blow air into the accommodating chamber 11 through the chip blowing air duct 23; when the cutting drill 1 stops rotating, the return spring 34 pushes the push rod 33 to extend into the chip blowing air duct 23 to push out the debris entering the chip blowing air duct 23. By providing the chip pusher rod 33 and the return spring 34, when the cutting drill bit 1 rotates, the chip pusher rod 33 is thrown out of the chip blowing duct 23 under the action of centrifugation, and will not affect the connectivity of the chip blowing duct 23. When the cutting drill bit 1 stops rotating, for example, when the cutting is completed and the rotation is reversed or the punch 2 is completely retracted into its position, the return spring 34 pushes the chip pusher rod 33 into the chip blowing duct 23, so that the debris entering the chip blowing duct 23 is pushed out by the chip pusher rod 33 to prevent the debris from clogging the chip blowing duct 23.

[0032] Since the chip pusher 33 needs to slide in the chip blowing air duct 23, there is a certain gap between it and the inner wall of the chip blowing air duct 23, and the debris may be attached to the inner wall of the chip blowing air duct 23. Since it is located in the gap, the chip pusher 33 cannot push them away. The debris attached to the inner wall of the chip blowing air duct 23 accumulates more and more, which may easily cause the chip pusher 33 to be stuck and unable to move. Fig. 9As shown, the chip pushing rod 33 is provided with a chip pushing airbag 331, a charging and discharging air chamber 332, a charging and discharging piston 333 and a piston spring 334. The chip pushing airbag 331 is located at the end of the chip pushing rod 33, and is used to fill the chip blowing air duct 23. The charging and discharging air chamber 332 is connected to the chip pushing airbag 331. The charging and discharging piston 333 is arranged in the charging and discharging air chamber 332. The piston spring 334 is connected to the charging and discharging piston 333 to drive the charging and discharging piston 333 to compress the air in the charging and discharging air chamber 332. When the cutting drill bit 1 rotates, the charging and discharging piston 333 overcomes the elastic force of the piston spring 334 and slides under the centrifugal action to pump the air in the chip pushing airbag 331 to The air chamber 332 is charged and discharged, and the chip pushing airbag 331 contracts and exits the chip blowing duct 23 along with the chip pushing push rod 33. When the cutting drill bit 1 stops rotating, the chip pushing airbag 331 extends into the chip blowing duct 23 along with the chip pushing push rod 33. The piston spring 334 pushes the charging and discharging piston 333 to slide to press the air in the charging and discharging air chamber 332 into the chip pushing airbag 331. The chip pushing airbag 331 expands and fills the chip blowing duct 23, thereby clinging to the inner wall of the chip blowing duct 23. No gap will be left between the chip pushing airbag 331 and the inner wall of the chip blowing duct 23. The chip pushing airbag 331 can therefore push away the debris that sticks to the inner wall of the chip blowing duct 23 to prevent the debris from accumulating more and more.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A pot punching device, characterized in that: The invention comprises a pre-cutting mechanism and a punching mechanism. The pre-cutting mechanism is provided with a cutting drill bit, a cutting drive assembly and an advance and retreat drive assembly. The advance and retreat drive assembly drives the cutting drill bit to advance or retreat to approach or move away from the pot to be punched. The cutting drive assembly drives the cutting drill bit to rotate to cut the pot. The cutting drill bit cuts the pot to form a circular pre-cut groove in the pot. The punching mechanism then punches the area in the pre-cut groove to form a punched hole.

2. The pot punching device according to claim 1, characterized in that: The cutting drill bit is hollow to form an accommodating cavity, and the punching mechanism is provided with a punch, which is arranged in the accommodating cavity and can move forward or backward. The punch moves forward and extends from the cutting drill bit to punch the cookware to form the punched hole.

3. The pot punching device according to claim 2, characterized in that: It also includes a mounting bracket, and the tail of the punch and the mounting bracket are respectively provided with a straight groove and a guide rail that match each other, so that the punch can move forward or backward along the straight groove and the guide rail, and the outer side of the punch and the inner wall of the accommodating cavity are respectively provided with threads that match each other, so that when the cutting drill bit rotates, the punch can be driven forward or backward through the threads.

4. The pot punching device according to claim 2, characterized in that: The punch is provided with a plurality of stamping protrusions for contacting and stamping the cookware, and there are gaps between the stamping protrusions, and the gaps can accommodate the debris generated by cutting the cookware, so that the stamping protrusions can directly contact the cookware.

5. The pot punching device according to claim 4, characterized in that: The pre-cutting mechanism also includes a chip blowing assembly, which includes an air guide hood and a chip blowing air duct. The air guide hood is provided with chip blowing blades and is sleeved on the outside of the cutting drill bit so that it can blow air as the cutting drill bit rotates. The chip blowing air duct is provided on the cutting drill bit and connects the accommodating cavity and the air guide hood. When the cutting drill bit rotates to drive the punch backward, the chip blowing blades blow air into the accommodating cavity through the chip blowing air duct to blow away the debris contained in the gap between the stamping protrusions.

6. The pot punching device according to claim 5, characterized in that: The chip blowing assembly also includes: A push rod cylinder body, which is fixedly connected to the air guide cover; A chip pusher rod is slidably connected to the pusher cylinder body and can extend into and out of the chip blowing air duct; A return spring is connected to the chip pusher and the pusher cylinder respectively to provide elastic force for the chip pusher to extend into the chip blowing air duct; When the cutting drill bit rotates, the chip pusher overcomes the elastic force of the return spring under the centrifugal action and exits the chip blowing air channel, so that the chip blowing blade can blow air into the accommodating chamber through the chip blowing air channel; When the cutting drill bit stops rotating, the return spring pushes the chip pusher rod into the chip blowing air duct to push out the debris that has entered the chip blowing air duct.

7. The pot punching device according to claim 6, characterized in that: The chip pusher is equipped with: A chip pushing air bag, which is located at the end of the chip pushing ejector rod and is used to fill the chip blowing air duct; An air filling and discharging cavity connected to a chip pushing air bag; A charging and discharging piston, which is arranged in the charging and discharging air chamber; A piston spring connected to the charging and discharging piston to drive the charging and discharging piston to compress the air in the charging and discharging chamber; When the cutting drill bit rotates, the charging and discharging piston overcomes the elastic force of the piston spring under the centrifugal action and slides to pump the air in the chip pushing airbag into the charging and discharging air chamber, and the chip pushing airbag shrinks and exits the chip blowing air duct along with the chip pushing ejector rod; When the cutting drill stops rotating, the chip pushing airbag extends into the chip blowing air duct along with the chip pushing push rod, and the piston spring pushes the charging and discharging piston to slide to press the air in the charging and discharging air cavity into the chip pushing airbag, so that the chip pushing airbag expands and fills the chip blowing air duct.

8. The pot punching device according to claim 4, characterized in that: A punching ring is provided at the edge of the end of the punch. When the punch punches the cookware, the punching ring punches to form the edge of the punching hole.

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