A curling machine for cookware after stamping and its curling method

Abstract

The present invention relates to the technical field of cookware processing, and discloses a curling machine for a cookware after stamping and forming, which includes a base and a bracket. The bracket is fixedly installed on the base. A curling mechanism is installed on the base, a lower support mechanism is arranged on the base, and an upper pressing mechanism is installed on the bracket. The lower support mechanism includes a lower driving member, a support main shaft and a lower circumferential driving member, and the support main shaft is connected to the driving end of the lower driving member. By arranging the lower circumferential driving member on the support main shaft, the present invention uses the driving rod of the lower circumferential driving member that can freely extend to drive the support block to press against the inner wall of the cookware, so as to fit cookware with outer walls of different shapes. After the electromagnetic rod is energized, it attracts the magnetic slider to press the cookware between the rigid block and the magnetic slider, so as to increase the contact area between the upper pressing mechanism and the lower support mechanism and the cookware, and improve the stability of the cookware during rotation.

Description

Technical Field

[0001] The present invention relates to the technical field of cookware processing, and particularly to a curling machine for cookware after stamping and a curling method thereof. Background Art

[0002] After the cookware is stamped and formed, the edge needs to be curled into a round edge, which can greatly increase the strength of the cookware and prevent its edge from scratching the user. The cookware curling machine forms a curling effect by rotating the cookware at a high speed and extruding and deforming the edge of the cookware.

[0003] Before the cookware is curled, it is necessary to fix the cookware on the pressing device first to prevent the cookware from shaking during rotation. However, in the existing technology, most of the fixation of the cookware is directly carried out by squeezing the bottom surface of the cookware with two upper and lower flat plates. This fixation method has the following defects: First, the cookware is generally in a cylindrical shape, and the space occupied by the cookware is relatively large. The fixation method of only squeezing the bottom surface of the cookware has a small contact area with the cookware, and the side part of the cookware is completely unsupported. When the cookware rotates, it is easy to be unstable and prone to resonance, resulting in defects in the curled edge. Second, the flat fixation method is only suitable for cookware with a flat bottom surface. For cookware with an arc-shaped bottom surface, the contact area is a point, and it is basically impossible to ensure the stability of the cookware. And if the stability is improved by increasing the extrusion force, it may cause the arc-shaped bottom of the pot to sink and damage the cookware. In addition, the side wall of the existing cookware is not a straight line. Some have a small opening but a large belly, such as a spherical pot. If the extrusion plate is large, it cannot extend into the cookware. If the plate is small, the stability is poor. Therefore, the method of fixing the cookware by flat plate extrusion in the existing technology reduces the curling effect. Summary of the Invention

[0004] Aiming at the deficiencies existing in the use of the existing curling machine for cookware after stamping and forming in the background art, the present invention provides a curling machine for cookware after stamping and a curling method thereof, which have the advantages of supporting the side wall of the cookware, good stability of the cookware; being suitable for fixing cookware with an arc-shaped bottom surface; and being suitable for supporting cookware with different outer wall shapes, and solves the problems raised in the above background art.

[0005] The present invention provides the following technical solution: A curling machine for cookware after stamping and forming, comprising a base and a bracket. The bracket is fixedly installed on the base. A curling mechanism is installed on the base. A lower support mechanism is arranged on the base. An upper pressing mechanism is installed on the bracket. The lower support mechanism includes a lower driving member, a support main shaft, and a lower circumferential driving member. The support main shaft is connected to the driving end of the lower driving member. The lower circumferential driving member is sleeved on the support main shaft. The driving end of the lower circumferential driving member is connected to a support block, and the support block is used for extruding the inner wall of the cookware. The upper pressing mechanism includes an upper pressing plate. The middle part of the upper pressing plate is connected to an upper pressing main shaft. A side pressing plate is slidably connected to the upper pressing plate. A side pressing block is arranged in the middle of the side pressing plate. A fulcrum adjustment assembly for connecting the side pressing plate is arranged on the upper pressing plate. An upper driving member is installed on the upper pressing main shaft.

[0006] Preferably, the lower circumferential driving member includes a main cylinder, branch cylinders, and driving rods. The branch cylinders are evenly distributed on the main cylinder. The driving rods are slidably sleeved in the branch cylinders. A plurality of driving groups composed of branch cylinders and driving rods are distributed axially on the main cylinder, and eight driving groups are distributed radially on the main cylinder.

[0007] Preferably, one end of the support block away from the lower circumferential driving member is connected to a rigid block. An electromagnetic rod is arranged inside the support block. The top end of the support main shaft is connected to a cushion block. A soft pad is connected to the outer wall of the rigid block. The rigid blocks on the support blocks connected by the driving groups in the axial direction of the lower circumferential driving member are connected to the same soft pad, and the soft pad is made of an elastic material.

[0008] Preferably, vertical grooves and side sliding grooves are formed on the upper pressing plate. The side sliding grooves are L-shaped. One side sliding groove is respectively formed on both sides of one vertical groove. One side opening of the side sliding groove is communicated with the vertical groove, and the other side opening of the side sliding groove extends to the top surface of the upper pressing plate. The side pressing plate is slidably sleeved in the vertical groove.

[0009] Preferably, the fulcrum adjustment assembly includes a rotating rod, a connecting rod, and a rod circumferential driving member. The rotating rod is slidably sleeved in the side sliding groove. One end of the rotating rod is slidably sleeved in a side groove formed on the outer wall of the side pressing plate. The two rotating rods on both sides of the vertical groove are respectively connected to a connecting rod, and the other end of the connecting rod is connected to the driving end of the rod circumferential driving member. The rod circumferential driving member has the same structure as the lower circumferential driving member.

[0010] Preferably, an upper circumferential driving member is installed on the upper pressing main shaft. The upper circumferential driving member has the same structure as the lower circumferential driving member. The driving end of the upper circumferential driving member is connected to a telescopic rod, and the driving end of the telescopic rod is connected to the top end of the side pressing plate.

[0011] Preferably, the side pressing block includes a sleeve block, a magnetic slider and a return spring. The sleeve block is fixedly sleeved on the middle part of the side pressing plate. The magnetic slider is movably sleeved inside the sleeve block. The return spring is connected between the sleeve block and the magnetic slider.

[0012] A curling method for a cookware after stamping and forming includes the following steps:

[0013] S1: The cookware is sleeved upside down above the cushion block. The circumferential driving member below is started to drive the supporting block to move towards the inner wall of the cookware and squeeze the soft cushion to adhere to the inner wall of the cookware.

[0014] S2: The upper driving member drives the upper pressing plate to move downwards. If the bottom surface of the cookware is flat, the upper pressing plate is driven to contact the bottom surface of the cookware. If the bottom surface of the cookware is arc-shaped, the upper pressing plate is located above the bottom surface of the cookware and does not contact the bottom surface of the cookware.

[0015] S3: The rod circumferential driving member is started to drive the connecting rod and the rotating rod to move horizontally, and then the driving state of the rod circumferential driving member is maintained.

[0016] S4: The upper circumferential driving member is started. The side pressing plate is driven to rotate along the rotating rod through the telescopic rod. The inclination angle of the side pressing plate is adjusted to make the side pressing plate fit the shape of the outer wall of the cookware to the greatest extent. The telescopic rod is started to adjust the length of the side pressing plate in contact with the cookware, so that the side pressing plate covers the outer wall of the cookware to the greatest extent.

[0017] S5: An electric current is passed into the electromagnetic rod. The induced electromagnetic field of the electric current attracts the magnetic slider. The magnetic slider moves towards the outer wall of the cookware and presses the cookware between the magnetic slider and the rigid block.

[0018] S6: The lower driving member and the upper driving member are started to rotate synchronously and in the same direction, so that the outer edge of the cookware passes through the curling mechanism in turn.

[0019] S7: The electromagnetic rod is powered off. The lower driving member and the upper driving member stop rotating. The lower circumferential driving member is closed. The supporting block moves closer to the central axis of the lower circumferential driving member. The upper circumferential driving member is closed. The side pressing plate inclines towards the outer circumference of the cookware. The upper driving member drives the upper pressing plate to move upwards, and the cookware is taken off from the cushion block.

[0020] The present invention has the following beneficial effects:

[0021] 1. By arranging the circumferential driving member below on the supporting main shaft, the present invention uses the driving rod that can freely extend of the circumferential driving member below to drive the supporting block to press on the inner wall of the cookware, so that the cookware with different outer wall shapes can be fitted. After the electromagnetic rod is electrified, the magnetic slider is attracted to press the cookware between the rigid block and the magnetic slider, so as to increase the contact area between the upper pressing mechanism and the lower supporting mechanism and the cookware, and improve the stability of the cookware during rotation.

[0022] 2. Through the cooperation of the upper pressing plate, the side pressing plates, and the side pressing blocks, when the bottom of the pot is arc-shaped, the invention avoids the upper pressing plate from extruding the arc-shaped bottom of the pot. By means of the side pressing plates and side pressing blocks extruding the outer wall of the pot and the supporting block extruding the inner wall of the pot, the pot is fixed through the frictional forces on the inner and outer walls of the pot, preventing the excessive extrusion force between the upper pressing plate and the bottom of the pot from causing the bottom of the pot to sink. At the same time, the stability of the pot is ensured, making the curling machine of the present application applicable to pots with different bottom surfaces.

[0023] 3. Through the telescopic movement of the driving rod of the lower circumferential driving member, the invention realizes the adjustment of the size of the lower supporting mechanism. When placing the pot, the driving rod of the lower circumferential driving member is retracted, facilitating the placement of the lower circumferential driving member and the supporting block into the belly of the pot with a small opening. Then, by extending the driving rod of the lower circumferential driving member, the supporting block is pressed against the inner wall of the pot, improving the stability of the pot fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the present invention;

[0025] Figure 2 is Figure 1 an enlarged schematic view of part A of

[0026] Figure 3 of the present invention Figure 1 an enlarged schematic view of part B;

[0027] Figure 4 is a schematic structural diagram of the fulcrum adjustment assembly of the present invention;

[0028] Figure 5 is a top view of the lower supporting mechanism of the present invention;

[0029] Figure 6 is a top view of the upper pressing mechanism of the present invention;

[0030] Figure 7 is a top view of the fulcrum adjustment assembly of the present invention.

[0031] In the figures: 1. Lower driving member; 2. Supporting main shaft; 3. Lower circumferential driving member; 4. Supporting block; 401. Rigid block; 402. Electromagnetic rod; 5. Soft pad; 6. Pad block; 7. Upper pressing plate; 701. Vertical groove; 702. Side sliding groove; 703. Upper pressing main shaft; 8. Side pressing plate; 9. Side pressing block; 901. Sleeve block; 902. Magnetic sliding block; 903. Return spring; 10. Fulcrum adjustment assembly; 1001. Rotating rod; 1002. Link rod; 1003. Rod circumferential driving member; 11. Expansion rod; 12. Upper circumferential driving member; 13. Upper driving member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figure 1 , a curling machine for cookware after stamping and forming, which includes a base, a bracket and a curling mechanism. The bracket is fixedly installed on the base. A lower support mechanism is installed on the base, and an upper pressing mechanism is installed on the bracket. The upper pressing mechanism is directly above the lower support mechanism. The curling mechanism is arranged on the base. Generally, the curling mechanism includes a curling wheel and a pressing wheel. When curling the cookware, the open end of the cookware is sleeved on the lower support mechanism, and the top part of the lower support structure is located inside the cookware. The upper pressing mechanism presses the cookware downward from above or presses against the side wall of the cookware from the side.

[0034] The lower support mechanism includes a lower driving member 1. The lower driving member 1 includes a rotating motor and a hydraulic rod. The rotating motor can be installed at the driving end of the hydraulic rod, or the hydraulic rod can be installed at the driving end of the rotating motor. The two are combined to form the lower driving member 1. The output end of the lower driving member 1 is connected to a support main shaft 2. The lower driving member 1 can realize the up and down movement and rotation of the support main shaft 2. A lower circumferential driving member 3 is sleeved on the support main shaft 2. Please refer to the attached Figure 1 , the lower circumferential driving member 3 includes a main cylinder and a branch cylinder installed on the side of the main cylinder. A driving rod is slidably sleeved in the branch cylinder. The driving rod is connected to a support block 4. A plurality of branch cylinders and their driving rods evenly distributed along the axial direction of the main cylinder form a driving group. A plurality of driving groups are evenly distributed in the circumferential direction of the main cylinder. In this application, please refer to the attached Figure 5 , a total of eight driving groups are distributed.

[0035] Please refer to the attached Figure 2 , one end of the support block 4 away from the lower circumferential driving member 3 is connected to a rigid block 401. The hardness of the rigid block 401 is relatively high, which can improve the stability of supporting the cookware. An electromagnetic rod 402 is arranged inside the support block 4. When the electromagnetic rod 402 is energized, the generated electromagnetic field can attract magnetic materials to approach the support block 4. The support block 4 and the rigid block 401 are both made of ferromagnetic materials. Please refer to the attached Figure 1 and the attached Figure 5 , a soft pad 5 is connected to the outer wall of the rigid block 401. The support blocks 4 connected by the same driving group are connected to the same soft pad 5. The soft pad 5 has elasticity and can deform to adapt to the different elongation distances of the driving rods when the elongation distances of the driving rods in the same group of branch cylinders are inconsistent.

[0036] Please refer to the attached Figure 1, a cushion block 6 is connected to the top end of the supporting main shaft 2. When placing a cookware, first discharge the medium in the circumferential driving member 3 below, which can be hydraulic oil or air, to form an oil cylinder or a cylinder, so that all the driving rods are in a contracted state, thereby reducing the space occupied by the lower supporting mechanism in the transverse direction and facilitating the entry into the interior of the cookware through the cookware opening with a smaller opening. Then, fill the medium into the circumferential driving member 3 below, so that the driving rods in the supporting cylinders all move outward, and push the supporting block 4 and the soft pad 5 to move, so that the soft pad 5 adheres to the inner wall of the cookware. Since the driving rods in each supporting cylinder can freely expand and contract, the shape of different positions of the cookware can be adapted, so that the soft pad 5 completely fits on the inner wall of the cookware, improving the supporting force for the cookware. Then, start the upper pressing mechanism to press the cookware from the outside of the cookware.

[0037] Refer to the appendix Figure 1 and the appendix Figure 6 , the upper pressing mechanism includes an upper pressing plate 7. A vertical groove 701 is formed in the upper pressing plate 7. A side pressing plate 8 is movably sleeved in the vertical groove 701. A side sliding groove 702 is formed in the upper pressing plate 7 at the position of the vertical groove 701. The side sliding groove 702 is L-shaped. One side opening is on the side wall at the position of the vertical groove 701, and the other side opening is on the top surface of the upper pressing plate 7. The vertical groove 701 penetrates through the upper and lower bottom surfaces of the upper pressing plate 7, and the side sliding groove 702 penetrates through the upper top surface of the upper pressing plate 7. An upper pressing main shaft 703 is connected to the middle of the top surface of the upper pressing plate 7. The upper pressing main shaft 703 is connected to the top end of the bracket through an upper driving member 13. The upper driving member 13 is the same as the lower driving member 1, and can drive the upper pressing main shaft 703 to move up and down and rotate, so that the upper pressing plate 7 moves up and down and rotates.

[0038] Refer to the appendix Figure 1 , the side pressing plate 8 is strip-shaped. A side pressing block 9 is arranged in the middle of the side pressing plate 8. The side pressing blocks 9 are evenly distributed on the side pressing plate 8. Refer to the appendix Figure 3 , the side pressing block 9 includes a sleeve block 901, a magnetic sliding block 902 and a return spring 903. The sleeve block 901 is fixedly sleeved in the middle of the side pressing plate 8. The magnetic sliding block 902 is slidably sleeved in the sleeve block 901. The return spring 903 is connected between the inner wall of the sleeve block 901 and the magnetic sliding block 902. The magnetic sliding block 902 is made of magnetic material. When there is a magnetic field, it will be attracted by the magnetic field and move to the outside of the sleeve block 901. One end of the magnetic sliding block 902 located outside the sleeve block 901 is also connected with a soft pad 5. All the magnetic sliding blocks 902 on each side pressing plate 8 are jointly connected with a soft pad 5. Refer to the appendix Figure 6 , the number of the side pressing plates 8 is eight, which is the same as the number of the driving groups on the upper supporting mechanism and is in one-to-one correspondence.

[0039] Refer to the appendix Figure 1 , appendix Figure 2 and appendix Figure 7, both sides of the side pressing plate 8 are provided with side grooves, a rotating rod 1001 is slidably connected in the side grooves, the other end of the rotating rod 1001 is slidably connected in the side sliding groove 702, the rotating rod 1001 is L-shaped, there are two rotating rods 1001 and they are respectively located in two side sliding grooves 702 on both sides of the vertical groove 701. One ends of the two rotating rods 1001 extending to the upper surface of the upper pressing plate 7 are both connected with a connecting rod 1002, and one ends of the two connecting rods 1002 far from the rotating rod 1001 are connected with the driving end of a rod circumferential driving member 1003. The structure of the rod circumferential driving member 1003 is the same as that of the lower circumferential driving member 3, and it is also composed of a main cylinder, a branch cylinder and a driving rod. The rotating rod 1001, the connecting rod 1002 and the rod circumferential driving member 1003 form a fulcrum adjusting assembly 10. One fulcrum adjusting assembly 10 is arranged at each vertical groove 701. The rod circumferential driving member 1003 is sleeved on the upper pressing main shaft 703. By controlling the filling and discharging of the medium in the rod circumferential driving member 1003, the lateral movement of the connecting rod 1002 is controlled, and then the position of the rotating rod 1001 in the radial direction of the upper pressing plate 7 is controlled. Since one end of the rotating rod 1001 is sleeved on the side surface of the side pressing plate 8, refer to the appendix Figure 1 , when the rotating rod 1001 moves along the vertical groove 701, the position of the rotating rod 1001 is different, and the position of the side pressing plate 8 from the central axis of the upper pressing plate 7 is different, so as to adapt to cookware with different diameters. Moreover, the rotating rod 1001 plays a role in supporting the side pressing plate 8 and ensuring that the side pressing plate 8 can rotate. During use, the side pressing plate 8 is located on the outer periphery of the cookware. When the rotating rod 1001 approaches the upper pressing main shaft 703, the eight side pressing plates 8 gather towards the central axis of the upper pressing plate 7 and stick to the outer wall of the cookware, so that the side pressing plate 8 can adapt to cookware with a small diameter. On the contrary, when the rotating rod 1001 is far from the upper pressing main shaft 703, the eight side pressing plates 8 spread towards the outer periphery of the upper pressing plate 7, so that the side pressing plate 8 can adapt to cookware with a larger diameter.

[0040] Refer to the appendix Figure 1 , an upper circumferential driving member 12 is installed on the upper pressing main shaft 703. The structure of the upper circumferential driving member 12 is the same as that of the rod circumferential driving member 1003 and the lower circumferential driving member 3. The driving rod of the upper circumferential driving member 12 is connected with a telescopic rod 11, and the driving rod of the telescopic rod 11 is connected to the top end of the side pressing plate 8. When the rotating rod 1001 moves to a position and is fixed, the top end of the side pressing plate 8 is pushed to move laterally by the telescopic of the driving rod of the upper circumferential driving member 12, so that the side pressing plate 8 rotates along the rotating rod 1001, playing a role in adjusting the rotation of the side pressing plate 8. Moreover, the telescopic rod 11 can freely extend. Each side pressing plate 8 connected to the side pressing plate 8 is controlled and driven separately, so that the elongation components of the side pressing plate 8 in the vertical direction can be different to adapt to some cookware with irregular shapes, ensuring that each side pressing plate 8 can be attached to the outer wall of the cookware and improving the supporting effect on the cookware.

[0041] Refer to the appendix Figure 1, when the cookware is squeezed between the lower support mechanism and the upper pressing mechanism, and through adjustment, the side pressing plate 8 is made to fit as closely as possible to the outer wall of the cookware. However, since the side pressing plate 8 is a solid strip and is not bendable, it cannot completely fit the outer wall of the cookware. The number of support blocks 4 is large and the contact area with the cookware is small, so it can contact the inner wall of the cookware to the maximum extent. If the number of support blocks 4 is large enough, it can completely fit the inner wall of the cookware. At this time, an electric current is passed through the electromagnetic rod 402 to generate an induced magnetic field, and the magnetic field attracts the magnetic slider 902, causing the magnetic slider 902 to move outward from the sleeve block 901, clamping the cookware between the sleeve block 901 and the rigid block 401, and improving the pressing effect on the cookware through friction. Then, the lower driving member 1 and the support main shaft 2 are driven to rotate in the same direction. Due to the effect of friction, the stability of the cookware during rotation is greater.

[0042] The curling method of the present invention includes the following steps:

[0043] S1: The cookware is sleeved over the upper part of the cushion block 6 with the opening facing downwards. The lower circumferential driving member 3 is started, and a medium is filled into the main cylinder of the lower circumferential driving member 3, causing the driving rod of the branch cylinder to move outward, driving the support block 4 to move towards the inner wall of the cookware, and squeezing the soft pad 5 against the inner wall of the cookware;

[0044] S2: The upper driving member 13 drives the upper pressing plate 7 to move downwards. If the bottom surface of the cookware is flat, the upper pressing plate 7 is driven to contact the bottom surface of the cookware, causing the upper pressing plate 7 to squeeze the bottom surface of the cookware. If the bottom surface of the cookware is arc-shaped, the upper pressing plate 7 is located above the bottom surface of the cookware to prevent the upper pressing plate 7 from squeezing and denting the arc-shaped bottom surface of the cookware. Therefore, for cookware with an arc-shaped bottom, the side pressing plate 8 is used to clamp the cookware from the side to achieve the pressing effect on the cookware;

[0045] S3: The rod circumferential driving member 1003 is started to drive the connecting rod 1002 and the rotating rod 1001 to move horizontally, thereby adjusting the position of the rotating rod 1001 in the vertical groove 701 so that the side pressing plate 8 can fit the outer wall of cookware with different diameters. Then, the driving state of the rod circumferential driving member 1003 is maintained. During the curling process, it is necessary to ensure that the rotating rod 1001 does not move, and for the same type of cookware, the position of the basic rotating rod 1001 is the same. Therefore, it only needs to be adjusted once;

[0046] S4: The upper circumferential driving member 12 is started, and the side pressing plate 8 is driven to rotate along the rotating rod 1001 through the telescopic rod 11. The inclination angle of the side pressing plate 8 is adjusted to make the side pressing plate 8 fit the shape of the outer wall of the cookware to the maximum extent. The outer wall inclination of some cookware is different, so it is necessary to adjust the inclination angle of the side pressing plate 8 to match the outer wall of the cookware to the maximum extent, making the gap between the side pressing plate 8 and the outer wall of the cookware the smallest. Then, the telescopic rod 11 is started to adjust the length of the side pressing plate 8 in contact with the cookware, mainly suitable for cookware with irregular lengths, so that the side pressing plate 8 covers the outer wall of the cookware to the maximum extent;

[0047] S5: Pass an electric current into the electromagnetic rod 402. The induced electromagnetic field of the electric current attracts the magnetic slider 902, and the magnetic slider 902 moves towards the cookware, squeezing the cookware between the magnetic slider 902 and the rigid block 401. Since the magnetic slider 902 is sleeved in the sleeve block 901, the magnetic slider 902 is restricted axially by the side pressing plate 8 and cannot move. Therefore, by squeezing between the magnetic slider 902 and the rigid block 401, it can ensure that the cookware is "fixed" on the upper pressing mechanism and the lower supporting mechanism. When the upper pressing mechanism and the lower supporting mechanism rotate, the stability of the cookware can be improved;

[0048] S6: Start the lower driving member 1 and the upper driving member 13 to rotate synchronously in the same direction, so that the outer edge of the cookware passes through the curling mechanism in sequence;

[0049] S7: After curling is completed, cut off the power supply of the electromagnetic rod 402, and the electromagnetic attraction to the magnetic slider 902 disappears. The magnetic slider 902 retracts into the interior of the sleeve block 901 under the action of the return spring 903. The lower driving member 1 and the upper driving member 13 stop rotating. Close the lower circumferential driving member 3. The supporting block 4 moves closer to the central axis of the lower circumferential driving member 3. The supporting block 4 does not contact the inner wall of the cookware. The cookware is stuck on the cushion block 6. Close the upper circumferential driving member 12. The side pressing plate 8 inclines towards the outer circumference of the cookware, that is, diffuses outwards. The side pressing plate 8 no longer presses on the outer wall of the cookware. The upper driving member 13 drives the upper pressing plate 7 to move upwards, so that the cookware can be taken off from the cushion block 6 to perform the curling operation on the next cookware.

[0050] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant 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.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A curling machine for cookware after stamping and forming, comprising a base and a bracket. The bracket is fixedly installed on the base, and a curling mechanism is installed on the base. It is characterized in that: A lower support mechanism is arranged on the base, and an upper pressing mechanism is installed on the bracket. The lower support mechanism includes a lower driving part (1), a support main shaft (2) and a lower circumferential driving part (3). The support main shaft (2) is connected to the driving end of the lower driving part (1). The lower circumferential driving part (3) is sleeved on the support main shaft (2). The driving end of the lower circumferential driving part (3) is connected with a support block (4), and the support block (4) is used for extruding the inner wall of the cookware. The upper pressing mechanism includes an upper pressing plate (7). The middle part of the upper pressing plate (7) is connected with an upper pressing main shaft (703). A side pressing plate (8) is slidably connected to the upper pressing plate (7). A side pressing block (9) is arranged in the middle of the side pressing plate (8). A fulcrum adjusting component (10) for connecting the side pressing plate (8) is arranged on the upper pressing plate (7). An upper driving part (13) is installed on the upper pressing main shaft (703); Vertical grooves (701) and side sliding grooves (702) are formed on the upper pressing plate (7). The side sliding grooves (702) are L-shaped. One side sliding groove (702) is respectively formed on both sides of one vertical groove (701). One side opening of the side sliding groove (702) is communicated with the vertical groove (701), and the other side opening of the side sliding groove (702) extends to the top surface of the upper pressing plate (7). The side pressing plate (8) is slidably sleeved in the vertical groove (701); The fulcrum adjusting component (10) includes a rotating rod (1001), a connecting rod (1002) and a rod circumferential driving part (1003). The rotating rod (1001) is slidably sleeved in the side sliding groove (702). One end of the rotating rod (1001) is slidably sleeved in a side groove formed on the outer wall of the side pressing plate (8). The two rotating rods (1001) on both sides of the vertical groove (701) are respectively connected with a connecting rod (1002). The other end of the connecting rod (1002) is connected to the driving end of the rod circumferential driving part (1003). The rod circumferential driving part (1003) has the same structure as the lower circumferential driving part (3); An upper circumferential driving part (12) is installed on the upper pressing main shaft (703). The upper circumferential driving part (12) has the same structure as the lower circumferential driving part (3). The driving end of the upper circumferential driving part (12) is connected with a telescopic rod (11). The driving end of the telescopic rod (11) is connected to the top end of the side pressing plate (8).

2. The curling machine for cookware after stamping and forming according to claim 1, It is characterized in that: The lower circumferential driving part (3) includes a main cylinder, branch cylinders and driving rods. The branch cylinders are evenly distributed on the main cylinder. The driving rods are slidably sleeved in the branch cylinders. A plurality of driving groups composed of branch cylinders and driving rods are distributed axially on the main cylinder, and eight driving groups are distributed radially on the main cylinder.

3. The curling machine for cookware after stamping and forming according to claim 2, It is characterized in that: One end of the support block (4) away from the lower circumferential driving member (3) is connected with a rigid block (401). An electromagnetic rod (402) is arranged inside the support block (4). The top end of the support main shaft (2) is connected with a cushion block (6). A flexible pad (5) is connected to the outer wall of the rigid block (401). The rigid blocks (401) on the support blocks (4) connected by the driving group in the axial direction of the lower circumferential driving member (3) are connected to the same flexible pad (5). The flexible pad (5) is made of an elastic material.

4. A curling machine for a pot after stamping and forming according to claim 3, characterized in that: The side pressing block (9) includes a sleeve block (901), a magnetic slider (902) and a return spring (903). The sleeve block (901) is fixedly sleeved in the middle of the side pressing plate (8). The magnetic slider (902) is movably sleeved inside the sleeve block (901). The return spring (903) is connected between the sleeve block (901) and the magnetic slider (902).

5. A curling method for a pot after stamping and forming, using the curling machine for a pot after stamping and forming according to claim 4 for curling, characterized in that: It includes the following steps: S1: The pot is sleeved above the cushion block (6) with the opening facing downwards. The lower circumferential driving member (3) is started to drive the support block (4) to move towards the inner wall of the pot, and the flexible pad (5) is extruded to stick to the inner wall of the pot; S2: The upper driving member (13) drives the upper pressing plate (7) to move downwards. If the bottom surface of the pot is a flat surface, the upper pressing plate (7) is driven to contact the bottom surface of the pot; if the bottom surface of the pot is a curved surface, the upper pressing plate (7) is located above the bottom surface of the pot and does not contact the bottom surface of the pot; S3: The rod circumferential driving member (1003) is started to drive the connecting rod (1002) and the rotating rod (1001) to move horizontally, and then the driving state of the rod circumferential driving member (1003) is maintained; S4: The upper circumferential driving member (12) is started. The side pressing plate (8) is driven to rotate along the rotating rod (1001) through the telescopic rod (11). The inclination angle of the side pressing plate (8) is adjusted to make the side pressing plate (8) fit the shape of the outer wall of the pot to the greatest extent. The telescopic rod (11) is started to adjust the length of the side pressing plate (8) in contact with the pot, so that the side pressing plate (8) covers the outer wall of the pot to the greatest extent; S5: Current is passed into the electromagnetic rod (402). The induced electromagnetic field of the current attracts the magnetic slider (902). The magnetic slider (902) moves towards the outer wall of the pot and presses the pot between the magnetic slider (902) and the rigid block (401); S6: The lower driving member (1) and the upper driving member (13) are started to rotate synchronously and in the same direction, so that the outer edge of the pot passes through the curling mechanism in turn; S7: The electromagnetic rod (402) is powered off. The lower driving member (1) and the upper driving member (13) stop rotating. The lower circumferential driving member (3) is closed. The support block (4) approaches the central axis of the lower circumferential driving member (3). The upper circumferential driving member (12) is closed. The side pressing plate (8) inclines towards the outer circumference of the pot. The upper driving member (13) drives the upper pressing plate (7) to move upwards, and the pot is taken off from the cushion block (6).

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