Pot perforating apparatus

Abstract

Pot punching equipment relates to the technical field of metal stamping, comprising a pre-cutting mechanism and a punching mechanism, the pre-cutting mechanism is provided with a cutting drill bit, a cutting driving assembly and a feeding and withdrawing driving assembly, the feeding and withdrawing driving assembly drives the cutting drill bit to advance or retreat to approach or move away from the pot to be punched, the cutting driving assembly drives the cutting drill bit to rotate to cut the pot, the cutting drill bit cuts the pot to form a circular ring-shaped pre-cut groove in the pot, and the punching mechanism further punches the area in the pre-cut groove to form a punching hole. The cutting drill bit is used to cut the pot to form a circular ring-shaped pre-cut groove, so as to reduce the wall thickness of the punching hole, and then the punching mechanism is used for punching to form the punching hole. Since a certain depth is cut in the edge of the punching hole in advance, the wall thickness to be punched during the punching is thinned, so that the pot does not need too much pressure when being punched, and cracks are not easily generated around the punching hole, so that the quality of the pot is ensured.

Description

Technical Field

[0001] This invention relates to the field of metal stamping technology, and more specifically to a pot punching device. Background Technology

[0002] A cookware punching machine is a specialized piece of machinery used to punch holes in cookware, commonly found in kitchen utensil manufacturing. This equipment is used to punch holes in the pot's wall to install handles or other accessories. For cookware of average thickness, a punch is typically used to directly punch holes in the pot's wall. However, for cookware with thicker walls, higher hardness, and greater brittleness, using traditional punching techniques would require significantly more force. Furthermore, cookware with thicker walls, higher hardness, and greater brittleness is prone to cracking under heavy pressure. These cracks may be very small and difficult to detect, thus affecting the quality of the cookware. Summary of the Invention

[0003] In view of this, the present invention provides a pot punching device that prevents the pot from cracking when punching pots with thick walls, high material hardness, and brittleness.

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

[0005] The cookware punching equipment includes a pre-cutting mechanism and a punching mechanism. The pre-cutting mechanism is equipped with a cutting drill bit, a cutting drive assembly, and a forward and backward drive assembly. The forward and backward drive assembly drives the cutting drill bit to move forward or backward to approach or move away from the cookware to be punched. The cutting drive assembly drives the cutting drill bit to rotate to cut the cookware. The cutting drill bit cuts the cookware to form an annular pre-cut groove in the cookware. The punching mechanism then punches the area within the pre-cut groove to form a punch.

[0006] First, a pre-cut groove is formed on the cookware by cutting with a cutting drill bit to reduce the wall thickness of the punch. Then, the punching mechanism is used to punch the hole. Since a certain depth is cut at the edge of the punch beforehand, the wall thickness that needs to be punched during punching is reduced. At this time, the pressure of punching the cookware is not too high, so it is not easy to generate cracks around the punch, thus 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. The punch is located in the receiving cavity and can move forward or backward. The punch moves forward and extends out from the cutting drill bit to punch the cookware to form the punch.

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

[0009] Furthermore, the punch is provided with multiple stamping protrusions for contacting the pot, and there are gaps between each stamping protrusion. The gaps can accommodate the debris generated during the cutting of the pot, so that the stamping protrusions can directly contact the pot.

[0010] Furthermore, the pre-cutting mechanism also includes a chip blowing assembly, which includes an air guide shroud and a chip blowing duct. The air guide shroud is equipped 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 duct is located on the cutting drill bit and connects the receiving cavity with the air guide shroud. When the cutting drill bit rotates and drives the punch to retract, the chip blowing blades blow air through the chip blowing duct into the receiving cavity to blow away the debris contained in the gap between the punching protrusions.

[0011] Furthermore, the chip blowing assembly also includes a push rod cylinder, a chip pusher rod, and a return spring. The push rod cylinder is fixedly connected to the air guide shroud, and the chip pusher rod is slidably connected to the push rod cylinder and can extend into and out of the chip blowing channel. The return spring is connected to both the chip pusher rod and the push rod cylinder to provide elastic force for the chip pusher rod to extend into the chip blowing channel. When the cutting drill bit rotates, the chip pusher rod overcomes the elastic force of the return spring under centrifugal force and exits the chip blowing channel, so that the chip blowing fan blades can blow air into the receiving cavity through the chip blowing channel. When the cutting drill bit stops rotating, the return spring pushes the chip pusher rod to extend into the chip blowing channel to push out the chips that have entered the chip blowing channel.

[0012] Furthermore, the chip pusher is equipped with a chip pusher airbag, a filling and discharging chamber, a filling and discharging piston, and a piston spring. The chip pusher airbag is located at the end of the chip pusher and is used to fill the chip blowing channel. The filling and discharging chamber is connected to the chip pusher airbag. The filling and discharging piston is located in the filling and discharging chamber. The piston spring is connected to the filling and discharging piston so that it can drive the filling and discharging piston to compress the air in the filling and discharging chamber. When the cutting drill bit rotates, the filling and discharging piston slides against the elastic force of the piston spring under centrifugal force to draw the air in the chip pusher airbag into the filling and discharging chamber. The chip pusher airbag contracts and exits the chip blowing channel with the chip pusher. When the cutting drill bit stops rotating, the chip pusher airbag extends into the chip blowing channel with the chip pusher. The piston spring pushes the filling and discharging piston to slide to force the air in the filling and discharging chamber into the chip pusher airbag so that the chip pusher airbag expands and fills the chip blowing channel.

[0013] Furthermore, a stamping ring is provided at the edge of the punch end. When the punch presses the cookware, the stamping ring forms the edge of the punch hole. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the pot punching device of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the pre-cutting mechanism.

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

[0017] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

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

[0019] Figure 6 This is a cross-sectional view of the punch.

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

[0021] Figure 8 for Figure 7 Enlarged diagram of point B in the middle.

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

[0023] Figure 10 This is a three-dimensional structural diagram of the air guide shroud, push rod cylinder, and chip push rod.

[0024] The reference numerals in the figures include:

[0025] Cutting drill bit 1, receiving cavity 11;

[0026] Punch 2, stamping protrusion 21, stamping ring 22, chip blowing duct 23, straight groove 24;

[0027] Air guide shroud 3, chip blowing fan blade 31, push rod cylinder 32, chip pushing push rod 33, chip pushing air bag 331, charging and discharging air chamber 332, charging and discharging piston 333, piston spring 334, return spring 34;

[0028] Cutting drive assembly 4, drive gear 41, driven gear 42, drive motor 43, forward and backward drive assembly 5, drive cylinder 51, cookware 6, mounting bracket 7, thread 8. Detailed Implementation

[0029] The invention will be described in detail below with reference to specific embodiments.

[0030] Combination Figures 1-2The cookware punching device of this embodiment includes a pre-cutting mechanism and a punching mechanism. The pre-cutting mechanism is equipped with a cutting drill bit 1, a cutting drive assembly 4, and a forward / backward drive assembly 5, all of which are connected to a mounting bracket 7. The cutting drill bit 1 is rotatably connected to the mounting bracket 7 via bearings. The cutting drive assembly 4 drives the cutting drill bit 1 to rotate to cut the cookware 6. The forward / backward drive assembly 5 drives the cutting drill bit 1 forward or backward to approach or move away from the cookware 6 to be punched. The cutting drive assembly 4 of this embodiment includes a drive gear 41, a driven gear 42, and a drive motor 43. The drive gear 41 is fixedly connected to the drive motor 43, and the driven gear 42 is fixedly connected to the cutting drill bit 1 and meshes with the drive gear 41 for transmission. The drive motor 43 drives the cutting drill bit 1 to rotate through the meshing of the drive gear 41 and the driven gear 42. The forward / backward drive assembly 5 includes a drive cylinder 51, which is mounted on the worktable and fixedly connected to the mounting bracket 7 to drive the cutting drill bit 1 forward or backward. When drilling a hole in the cookware 6, the cookware 6 is fixed in place by a clamp with a punch hole. The forward and backward drive assembly 5 drives the mounting bracket 7 to move forward and approach the cookware 6. The cutting drive assembly 4 and the cutting drill bit 1 mounted on the mounting bracket 7 also approach the cookware 6. The cutting drill bit 1 first cuts the cookware 6 to form a pre-cut groove in the cookware 6. The punching mechanism then punches the area in the pre-cut groove to form a punch hole.

[0031] First, the cookware 6 is cut with a cutting drill bit 1 to form a pre-cut groove in the ring, reducing the wall thickness of the punch. Then, the punching mechanism is used to punch to form the punch. Since a certain depth is cut at the edge of the punch beforehand, the wall thickness that needs to be punched during punching is reduced. At this time, the pressure of punching the cookware 6 is not too great, so it is not easy to generate cracks around the punch, thus ensuring the quality of the cookware 6.

[0032] Combination Figures 5-8 The cutting drill bit 1 has a hollow cavity 11. The punching mechanism includes a punch 2, which is located inside the cavity 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 cooperate with 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 cavity 11 are respectively provided with a thread 8 that cooperates with each other. When the cutting drill bit 1 rotates, the thread 8 can drive the punch 2 to move forward or backward, similar to a lead screw. When the punch 2 moves forward, it extends from the cutting drill bit 1 to punch the pot 6 to form the punch. By setting the straight groove 24 and the guide rail that cooperate with each other, the punch 2 is restricted to linear movement and cannot rotate. Then, the thread 8 that cooperates with each other allows the cutting drill bit 1 to drive the punch 2 to move forward or backward when it rotates. This simplifies the structure, saves space, and eliminates the need for a power source for the punch 2. Furthermore, the punch 2 is cleverly placed inside the cutting drill bit 1. After the cutting drill bit 1 completes the cutting of the circular groove, the punch 2 can immediately complete the stamping without having to remove the cutting drill bit 1 before stamping, thus simplifying the processing steps.

[0033] When the cutting drill bit 1 cuts the cookware 6, it generates fine chips. If a traditional round punch is used, its stamping surface is flat or shaped to fit the cookware. These chips will get stuck between the punch 2 and the cookware 6, lifting the punch 2 and preventing it from making complete direct contact with the cookware 6. For the cookware 6, these chips can be considered part of the punch 2. The distribution of these chips is random, meaning that the punch 2 used to drill holes in each cookware 6 is different, resulting in unstable and inconsistent drilling quality. Figure 6 As shown, the punch 2 in this embodiment is provided with multiple stamping protrusions 21 for contacting the pot 6. A stamping ring 22 is provided at the end edge of the punch 2. There are gaps between the stamping protrusions 21, which can accommodate debris generated during the cutting of the pot 6, thus allowing the stamping protrusions 21 to directly contact the pot 6. By setting the stamping surface of the punch 2 as multiple stamping protrusions 21, the gaps between the stamping protrusions 21 can accommodate debris, preventing debris from lifting the punch 2 and allowing the stamping protrusions 21 to directly contact the pot 6. This eliminates the influence of debris and improves the stability and consistency of the drilling quality.

[0034] As production progresses, the gaps between the stamped protrusions 21 will accumulate more and more debris. Once the gaps are filled, the stamped protrusions 21 will eventually be unable to directly contact the cookware 6. (Combined with...) Figures 4-5 The pre-cutting mechanism also includes a chip blowing assembly, which includes an air guide shroud 3 and a chip blowing duct 23. The air guide shroud 3 is provided with chip blowing fan blades 31. In this embodiment, there are four chip blowing fan blades, and their number can be adjusted according to the desired blowing effect. No specific limitation is made here. The air guide shroud 3 can be integrated with the cutting drill bit 1. For ease of demonstration, they are disassembled here. The air guide shroud 3 is fitted on the outside of the cutting drill bit 1, so that the air guide shroud 3 can rotate with the cutting drill bit 1 and blow air through the chip blowing fan blade 31. The chip blowing air channel 23 is provided on the cutting drill bit 1. In this embodiment, there are 4 chip blowing air channels 23. Each chip blowing air channel 23 is connected to the accommodating cavity 11 and the air guide shroud 3. After drilling is completed, when the cutting drill bit 1 rotates and drives the punch 2 to retreat, the chip blowing fan blade 31 blows air through the chip blowing air channel 23 into the accommodating cavity 11. When the end face of the punch 2 passes through the chip blowing air channel 23, it is blown by the airflow 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 taken as the forward rotation), driving the punch 2 to retract. When the punch 2 retracts, it will pass through the chip blowing duct 23. The chip blowing fan blade 31 generates airflow, which is blown into the receiving cavity 11 through the chip blowing duct 23. Thus, when the punch 2 passes through the chip blowing duct 23, the chips in the gap between the stamping protrusions 21 are blown away, preventing the chips from accumulating and preventing the stamping protrusions 21 from directly contacting the cookware 6.

[0035] When the cutting drill bit 1 rotates forward, the airflow generated by the chip blower 31 is from the inside to the outside, and the airflow in the chip blower duct 23 is also from the inside to the outside, drawing the air out of the receiving cavity 11. At this time, the chips generated by the cutting drill bit 1 may enter the chip blower duct 23, causing it to become blocked. When the cutting drill bit 1 rotates backward, the airflow cannot enter the receiving cavity 11. Figures 7-10 The chip blowing assembly also includes a push rod cylinder 32, a chip pusher rod 33, and a return spring 34. The push rod cylinder 32 is fixedly connected to the air guide shroud 3, and the chip pusher rod 33 is slidably connected to the push rod cylinder 32. The chip pusher rod 33 corresponds one-to-one with the chip blowing duct 23 and can extend into and out of the chip blowing duct 23. The return spring 34 connects the chip pusher rod 33 and the push rod cylinder 32 respectively, thereby providing the chip pusher rod 33 with the elastic force to extend into the chip blowing duct 23. When the cutting drill bit 1 rotates, the chip pusher rod 33 overcomes the elastic force of the return spring 34 and exits the chip blowing duct 23 under centrifugal force, so that the chip blowing fan blade 31 can blow air into the receiving cavity 11 through the chip blowing duct 23. When the cutting drill bit 1 stops rotating, the return spring 34 pushes the chip pusher rod 33 to extend into the chip blowing duct 23 to push out the chips that have entered the chip blowing duct 23. By setting 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 channel 23 under centrifugal force, which will not affect the connection of the chip blowing channel 23. When the cutting drill bit 1 stops rotating, for example when the cutting is completed and the rotation direction is reversed or when the punch 2 is completely retracted, the return spring 34 pushes the chip pusher rod 33 to extend into the chip blowing channel 23, thereby using the chip pusher rod 33 to push out the chips that have entered the chip blowing channel 23, and avoid the chips from blocking the chip blowing channel 23.

[0036] Because the chip pusher rod 33 needs to slide within the chip blowing duct 23, there is a certain gap between it and the inner wall of the chip blowing duct 23. Debris may adhere to the inner wall of the chip blowing duct 23. Due to its location within this gap, the chip pusher rod 33 cannot push it away. As the debris accumulates on the inner wall of the chip blowing duct 23, it can easily become stuck and unable to move. Figure 9As shown, the chip pusher 33 is equipped with a chip pusher air bag 331, an air filling and discharging chamber 332, an air filling and discharging piston 333, and a piston spring 334. The chip pusher air bag 331 is located at the end of the chip pusher 33 and is used to fill the chip blowing air passage 23. The air filling and discharging chamber 332 is connected to the chip pusher air bag 331. The air filling and discharging piston 333 is located in the air filling and discharging chamber 332. The piston spring 334 is connected to the air filling and discharging piston 333 so that it can drive the air filling and discharging piston 333 to compress the air in the air filling and discharging chamber 332. When the cutting drill bit 1 rotates, the air filling and discharging piston 333 slides against the elastic force of the piston spring 334 under centrifugal force, so as to draw the air in the chip pusher air bag 331 to the air filling and discharging chamber 23. When the air chamber 332 is filled and deflated, the chip-pushing airbag 331 contracts and exits the chip-blowing air passage 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 air passage 23 along with the chip-pushing push rod 33. The piston spring 334 pushes the filling and deflation piston 333 to slide so as to force the air in the air chamber 332 into the chip-pushing airbag 331. The chip-pushing airbag 331 expands and fills the chip-blowing air passage 23, thus adhering tightly to the inner wall of the chip-blowing air passage 23. There is no gap between the chip-pushing airbag 331 and the inner wall of the chip-blowing air passage 23. Therefore, the chip-pushing airbag 331 can push away the chips adhering to the inner wall of the chip-blowing air passage 23, preventing the chips from accumulating more and more.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions created by the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions created by the present invention without departing from the essence and scope of the technical solutions created by the present invention.

Claims

1. A pot punching device, characterized in that, It includes a pre-cutting mechanism and a punching mechanism. The pre-cutting mechanism is equipped with a cutting drill bit, a cutting drive assembly, and an advance / retreat drive assembly. The advance / retreat drive assembly drives the cutting drill bit to move forward or backward 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 an annular pre-cut groove in the pot. The punching mechanism then punches the area within the pre-cut groove to form a punch. The cutting drill bit is hollow to form a receiving cavity. The punching mechanism is equipped with a punch. The punch is located in the receiving cavity and can move forward or backward. The punch moves forward and extends out from the cutting drill bit to punch the cookware to form the punch. The punch is provided with multiple stamping protrusions for contacting the pot, and there is a gap between each stamping protrusion. The gap can accommodate the debris generated during cutting the pot, so that the stamping protrusions can directly contact the pot. The pre-cutting mechanism also includes a chip blowing assembly, which includes an air guide shroud and a chip blowing duct. The air guide shroud is equipped 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 duct is located in the cutting drill bit and connects the receiving cavity with the air guide shroud. When the cutting drill bit rotates and drives the punch to retract, the chip blowing blades blow air through the chip blowing duct into the receiving cavity to blow away the debris contained in the gap between the punching protrusions. The chip blowing assembly also includes: Push rod cylinder body, which is fixedly connected to the air guide shroud; The chip pusher rod is slidably connected to the pusher rod cylinder and can extend into and retract from the chip blowing duct; The return spring is connected to the chip pusher rod and the pusher rod cylinder respectively, so as to provide the chip pusher rod with the elastic force to extend into the chip blowing channel; When the cutting drill bit rotates, the chip pusher rod overcomes the elastic force of the return spring under centrifugal force and exits the chip blowing channel, so that the chip blowing fan can blow air into the receiving cavity through the chip blowing channel; When the cutting drill bit stops rotating, the return spring pushes the chip pusher rod into the chip blowing channel to push out the chips that have entered the chip blowing channel.

2. The pot punching device according to claim 1, characterized in that, It also includes a mounting bracket. The tail of the punch and the mounting bracket are respectively provided with a straight groove and a guide rail that cooperate with each other, so that the punch can move forward or backward along the straight groove and the guide rail. The outer side of the punch and the inner wall of the receiving cavity are respectively provided with a thread that cooperates with each other, so that the cutting drill bit can drive the punch to move forward or backward through the thread when rotating.

3. The pot punching device according to claim 1, characterized in that, The chip pusher is equipped with: The chip-pushing airbag, located at the end of the chip-pushing top rod, is used to fill the chip-blowing air duct; The inflation / deflation chamber is connected to the chip-pushing airbag; The filling and discharging piston is located inside the filling and discharging chamber; A piston spring, which is 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 filling and discharging piston slides against the elastic force of the piston spring under centrifugal force, so as to draw the air in the chip-pushing air bag into the filling and discharging air chamber. The chip-pushing air bag contracts and exits the chip-blowing air passage with the chip-pushing push rod. When the cutting drill bit stops rotating, the chip-pushing airbag extends into the chip-blowing air passage along with the chip-pushing push rod. The piston spring pushes the filling and discharging piston to slide, so that the air in the filling and discharging chamber is forced into the chip-pushing airbag, causing the chip-pushing airbag to expand and fill the chip-blowing air passage.

4. The pot punching device according to claim 1, characterized in that, The punch end edge is provided with a stamping ring. When the punch punches the cookware, the stamping ring forms the edge of the punch hole.

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