A stamping die for an automobile wheel cover and its stamping method

Abstract

The present invention discloses a stamping die for an automobile wheel cover and its stamping method, aiming to provide a stamping die for an automobile wheel cover and its stamping method that can be mass-produced, is multifunctional, has a high degree of automation, high precision, and efficient mass production. It includes a base, on which a first die groove and a second die groove are provided. Lower dies are movably connected in both the first die groove and the second die groove. A shaping upper die and a cutting upper die are slidably connected to the base. The shaping upper die is opposite to the first die groove in the up and down positions, and the cutting upper die is opposite to the second die groove in the up and down positions. A material transfer plate is slidably connected to the base, and the material transfer plate is provided with a first opening and a second opening. The first opening is located at the notch of the first die groove, and the second opening is located at the notch of the second die groove. A feeding structure is provided on the base. The beneficial effects of the present invention are: high operation precision, capable of achieving the effect of rapid synchronous operation for shaping and cutting, high production efficiency, being conducive to mass production, and being convenient and fast.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping processing, and particularly to a stamping die for an automobile wheel cover and a stamping method thereof. Background Art

[0002] An automobile wheel cover refers to a structure for protecting a tire, including an arc-shaped wheel cover above the tire and a decorative cover wheel cover directly clamped on the side of the tire. Among them, the decorative cover wheel cover is usually a metal product, and a specific processing method of the stamping process can be adopted. It is placed in a hot stamping die of a stamping machine for one-time extrusion molding. At the same time, the surface of the decorative cover wheel cover usually needs to be cut and perforated.

[0003] Chinese Patent Authorization Publication No.: CN 207839733 U, Authorization Publication Date: September 11, 2018. The present utility model provides a stamping device, which includes: a punching press bed body, the punching press bed body includes a punch head and a base; a male die, the male die is fixed to the punch head; a female die, a convex circle is provided on the female die, and the convex circle is arranged opposite to the male die; and a laser device. Among them, the laser device is fixed to the base, and the laser device includes at least three laser heads, and at least three of the laser heads are aligned with different positions on the circumference of the convex circle. The disadvantage of this technical solution is that the function of the device is single and the degree of automation is low, and it is impossible to shape and cut the metal sheet synchronously, resulting in low accuracy and reduced production efficiency, and it is difficult to carry out mass production.

[0004] In summary, during the production process, the blank cannot be shaped and cut, resulting in low accuracy and low production efficiency, which affects the mass production efficiency. Summary of the Invention

[0005] The present invention is to overcome the deficiencies in the prior art that the stamping device has a single function, low degree of automation, low accuracy and difficulty in high-efficiency mass production, and provides a stamping die for an automobile wheel cover and a stamping method thereof that can carry out mass production, have multiple functions, high degree of automation, high precision and high-efficiency mass production.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A stamping die for an automobile wheel cover includes a base, a first die groove and a second die groove are provided on the base, a lower die is movably connected in both the first die groove and the second die groove, a shaping upper die and a cutting upper die are slidably connected to the base, the shaping upper die is opposite to the first die groove in the up and down position, the cutting upper die is opposite to the second die groove in the up and down position, a material transfer plate is slidably connected to the base, a first opening and a second opening are provided on the material transfer plate, the first opening is placed at the notch of the first die groove, the second opening is placed at the notch of the second die groove, and a feeding structure is provided on the base.

[0008] The first die groove and the second die groove are juxtaposed on the base. The shaping upper die and the cutting upper die are connected to the base and are respectively opposite to the positions of the first die groove and the second die groove up and down, so that the shaping upper die can enter and exit the first die groove by sliding, and the cutting upper die can enter and exit the second die groove by sliding. The shaping upper die and the lower die in the first die groove are combined to shape and discharge the blank placed on the lower die, and the cutting upper die and the lower die in the second die groove are combined to cut holes in the shaped blank placed on the lower die. By shaping first and then cutting holes, the two steps are separated to ensure the accuracy of shaping and opening cutting. Among them, the transfer plate covers the first die groove and the second die groove. At the same time, the first opening and the second opening are provided on the transfer plate and are respectively opposite to the openings of the first die groove and the second die groove. The sizes of the first opening and the second opening are greater than or equal to the sizes of the openings of the first die groove and the second die groove, which is convenient for the blank to enter. The lower die in the first die groove and the second die groove is movably connected so that the movable lower die can move up and down in the groove, and then feed the blank after clamping to the first opening or the second opening, so that the transfer plate can quickly transfer the blank through the first opening and the second opening during movement, and quickly discharge the blank from the second opening, forming a smooth assembly line operation, achieving the effect of fast synchronous operation while having high precision, thereby improving production efficiency and being conducive to mass production of products.

[0009] Preferably, a rotating gear is provided on one side of the transfer plate. The rotating gear is rotatably connected to the base and meshed with the transfer plate. A slider is connected to the other side of the transfer plate. A chute is provided on the base, and a first spring is connected in the chute. The slider is slidably connected to the chute and elastically connected to the first spring. A rotating gear is provided on one side of the transfer plate. The rotating gear is an incomplete gear. After the rotating gear rotates, the transfer plate can slide, so that the first opening moves to the opening of the second die groove. A slider is connected to the other side of the transfer plate. The slider is embedded in the chute on the base and connected to the first spring in the chute. After the incomplete gear rotates, the moved transfer plate can be reset, with smooth rotation and stable structure, improving the automatic mechanization of the transfer plate movement and achieving the effect of improving production efficiency.

[0010] Preferably, movable cavities are provided below both the first die groove and the second die groove. The movable cavities are communicated with the first die groove and the second die groove. A first telescopic mechanism and a second telescopic mechanism are installed in the movable cavities. The first telescopic mechanism is connected to the lower die. The movable cavities are placed below the first die groove and the second die groove and are communicated. The first telescopic mechanism is placed in the movable cavity and connected to the lower die to enable the lower die to move up and down in the movable cavity. At the same time, the extended length of the first telescopic mechanism makes the upper end surface of the lower die flush with the opening of the first lower die groove, thereby facilitating the transfer plate to rotate the blank and improving the smoothness and accuracy of processing.

[0011] Preferably, a monolithic ring is provided in both the first die groove and the second die groove, the monolithic ring is sleeved with the lower die, the end face of one end of the monolithic ring is an inwardly inclined inclined surface, and the other end of the monolithic ring is connected to the telescopic mechanism 2. The telescopic mechanism 2 is installed in the movable cavity and connected to one end of the monolithic ring, the monolithic ring is an annular structure and the other end is an inclined surface inclined inwardly of the ring, so as to prevent the blank of the first die groove or the second die ring from shifting in the groove, and the blank is placed directly above the lower die under the guidance of the inclined surface of the monolithic ring by moving the monolithic ring upward, so as to improve the accuracy of stamping.

[0012] Preferably, the base includes a bracket, the bracket is connected with telescopic mechanism 3 and telescopic mechanism 4, the telescopic mechanism 3 is connected to the shaping upper die, the telescopic mechanism 4 is connected to the cutting upper die, the bracket is provided with a stabilizing frame, the stabilizing frame is provided with a plurality of slots, the telescopic mechanism 3 and the telescopic mechanism 4 are both embedded in the slots, and the stabilizing frame is connected to the bracket. The bracket is connected to the side of the base, the shaping upper die is connected to the telescopic mechanism 3, the telescopic mechanism 3 is fixed to the bracket, the cutting upper die is connected to the telescopic mechanism 4, the telescopic mechanism 4 is fixed to the bracket, and the bracket is connected with a stabilizing frame, the telescopic mechanism 3 and the telescopic mechanism 4 are stuck on the stabilizing frame, the stability of the connection between the telescopic mechanism 3 and the telescopic mechanism 4 and the bracket is strengthened, the structural connection is stable, and the stamping accuracy is improved.

[0013] Preferably, a feed ramp is connected to the base, the surface of the feed ramp is connected to the surface of the transfer plate, the feed structure includes a stopper and a slide bar, the stopper is slidably connected to the feed ramp, a second spring is connected to the feed ramp, the second spring is elastically connected to the slide bar, a push rod is provided on the slide bar, one end of the push rod is rotatably connected to the slide bar, and the other end of the push rod is rotatably connected to the stopper. A plurality of blanks are arranged on the surface of the feed ramp, the end of the feed ramp abuts against the end of the transfer plate and the surfaces are connected, so that the blanks are moved from the feed ramp to the transfer plate. The feed ramp is an inclined plate tangent to the surface of the transfer plate. The feed structure includes a stopper and a slide bar. A pair of stops are provided, which are used to be placed in front of the blank to stop the blank that slides down on the feed ramp due to gravity. The slide bar is placed above the stopper through a spring. The push rod is used to push the stops up and down to open or close the gap, thereby controlling the release and blocking of the blank on the feed ramp, thereby achieving the effect of rapid feeding during stamping. It is convenient and fast, conducive to mass production, and improves production efficiency.

[0014] Preferably, a slide rail is provided on the feed inclined plate, a spring 3 is provided inside the slide rail, the spring 3 is connected to the block, and the block is slidably connected to the slide rail. One end of the spring 3 is connected to both sides of the slide rail, and the other end of the spring 3 is connected to the block. After the block is pushed away by the push rod, the blank is released and reset to block the next blank. The elastic force of the spring 3 resets the block to prevent the spring 2 from being pulled on the push rod, thereby improving the reset accuracy of the block, thereby accurately improving the smoothness and stability of the assembly line operation, and improving the stability of mass production.

[0015] Preferably, the sliding rod is provided with through holes, and the feeding inclined plate is provided with stabilizing rods. One end of the stabilizing rod is connected to the feeding inclined plate, and the other end of the stabilizing rod is inserted into the through holes. Through holes are provided at both ends of the sliding rod, and the stabilizing rods are connected to the surface of the feeding inclined plate. The stabilizing rods are connected to the through holes, making the up-and-down sliding of the sliding rod stable, thereby achieving the effect of increasing the structural stability.

[0016] Preferably, a support rod is connected to the feeding inclined plate. A rotating mechanism is provided on one side of the support rod, and a rotating rod is provided on the other side of the support rod. The rotating rod is connected to the rotating mechanism and is rotatably connected to the support rod. A circular plate is connected to the rotating rod, and a convex block is connected to the circular plate. The convex block is in contact with the sliding rod. The support rod is connected to the surface of the feeding inclined plate. A rotating mechanism is connected to the support rod. The rotating mechanism is connected to the rotating rod. A circular plate is connected to the rotating rod. The rotating rod is located at the center of the circular plate. Thus, the circular plate rotates following the rotating rod. The convex block is connected to the circular plate and rotates following the circular plate and is in contact with the sliding rod, achieving the effect that the convex block can intermittently press the sliding rod. Thereby, the feeding process of the blank is automated, achieving the effect of automatic feeding. Thus, labor can be saved, and the production efficiency can be improved, achieving the effect of high-efficiency batch production.

[0017] A stamping method for a stamping die used for an automobile wheel cover, including a blank, comprises the following steps:

[0018] Step 1: Arrange the blanks on the feeding inclined plate, start the rotating mechanism to release the stop block, and the blanks enter the transfer plate;

[0019] Step 2: The blanks enter the first die cavity through the first opening, raise the whole-material ring, lower the shaping upper die, and the blanks are pressed into shape;

[0020] Step 3: Reset the shaping upper die, raise the lower die so that the shaped blanks are placed in the first opening, rotate the rotating gear teeth, and place the first opening at the notch of the second die cavity;

[0021] Step 4: The shaped blanks enter the second die cavity. Reset the transfer plate, repeat Step 1 to send the blanks into the first die cavity, raise the whole-material rings in the first die cavity and the second die cavity to sort the blanks in their respective cavities, and at the same time lower the shaping upper die and the cutting upper die. The blanks in the two cavities are respectively shaped and punched;

[0022] Step 5: Reset the cutting upper die and the shaping upper die, raise the lower dies of the first die cavity and the second die cavity so that the shaped blanks are placed in the first opening and the cut blanks are placed in the second opening. Rotate the rotating gear teeth, the second opening sends out the cut blanks, and the blanks at the first opening are sent to the second opening, and repeat the above steps.

[0023] The specific operation process includes: Feeding: The blanks are arranged on the feeding inclined plate, and the stoppers on both sides block the first blank. By activating the rotating mechanism, the circular plate rotates driven by the rotating rod, and then the convex block presses down the sliding rod. The downward pressure of the sliding rod causes the push rod to push the stopper towards the side of the feeding inclined plate, so that the blank slides towards the material transfer plate under the action of gravity on the feeding inclined plate without obstruction. During this period, after the convex block leaves the sliding rod, the sliding rod rebounds upward under the action of the second spring, and the stopper resets under the action of the push rod and the third spring to block the second blank.

[0024] Shaping and pressing: The blank enters the first die cavity through the first opening on the material transfer plate. The second telescopic mechanism moves upward to make the integral ring move upward, arranging the blank directly above the lower die. The shaping upper die presses downward through the third telescopic mechanism into the first die cavity to close the die with the lower die, and the blank is shaped and pressed.

[0025] Material transfer: Reset the third telescopic mechanism to make the shaping upper die leave. Activate the first telescopic mechanism to make the lower die rise and send the shaped die into the first opening. Rotate the rotating gear to make the material transfer plate move until the first opening is positioned at the notch of the second die cavity, and the shaped blank enters the second die cavity. The toothless part of the rotating gear cannot engage with the material transfer plate, and the material transfer plate automatically resets under the action of the first spring.

[0026] Subsequent feeding: After the material transfer plate resets, repeat the feeding operation to make a new blank enter the first die cavity.

[0027] Synchronous shaping and pressing and cutting and pressing: There is a shaped blank in the second die cavity and a new blank in the first die cavity. Simultaneously activate the second telescopic mechanism below the first die cavity and the second telescopic mechanism below the second die cavity to make the integral ring move upward, arranging the shaped blank and the new blank directly above the lower die. The shaping upper die presses downward through the third telescopic mechanism into the first die cavity to close the die with the lower die, and the blank is shaped and pressed. The cutting upper die presses downward through the fourth telescopic mechanism into the second die cavity to close the die with the lower die, and the shaped blank is cut and pressed to make holes in the shaped blank.

[0028] Material transfer and discharging: Retract the third telescopic mechanism and the fourth telescopic mechanism. Activate the first telescopic mechanism to make the lower die in the first die cavity lift the shaped blank to the first opening, and the lower die in the second die cavity send a cut blank to the second opening. Rotate the rotating gear to make the material transfer plate move until the first opening is positioned at the notch of the second die cavity, and the shaped blank enters the second die cavity. The cut blank is moved away from the second opening and collected. Reset the material transfer plate and repeat the above operation.

[0029] Through the above stamping process, the automotive wheel cover can achieve the effect of mass production. It can be completed in one-stop from feeding to stamping to discharging, improving the automation before and after the stamping process, saving a large amount of operations before and after stamping, achieving high production efficiency in mass stamping, and having high precision and stable structure, thus realizing a high-stability production effect.

[0030] The beneficial effects of the present invention are as follows: high operating precision, capable of achieving the effect of rapid synchronous operation for shaping and cutting, thereby improving production efficiency, being conducive to mass production, having high structural stability, smooth operation, stable stamping, and convenient and fast loading and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a perspective view of the present invention;

[0032] Figure 2 is Figure 1 an enlarged view of part A in

[0033] Figure 3 is Figure 1 the front view of

[0034] Figure 4 is Figure 3 a sectional view taken along line B-B in

[0035] Figure 5 is Figure 4 a sectional view taken along line C-C in

[0036] Figure 6 a sectional view of the connection between the feeding inclined plate and the sliding rod;

[0037] Figure 7 is Figure 6 an enlarged view of part D in

[0038] In the figure: 1. base, 2. first die slot, 3. second die slot, 4. lower die, 5. shaping upper die, 6. cutting upper die, 7. material transfer plate, 8. first opening, 9. second opening, 10. feeding structure, 11. rotating gear, 12. slider, 13. sliding groove, 14. first spring, 15. movable cavity, 16. first telescopic mechanism, 17. second telescopic mechanism, 18. material aligning ring, 19. bracket, 20. third telescopic mechanism, 21. fourth telescopic mechanism, 22. stabilizing frame, 23. clamping slot, 24. feeding inclined plate, 25. stopper, 26. sliding rod, 27. second spring, 28. blank, 29. push rod, 30. slide rail, 31. third spring, 32. stabilizing rod, 33. through hole, 34. support rod, 35. rotating mechanism, 36. rotating rod, 37. circular plate, 38. convex block, 39. discharging inclined plane, 40. rotating notch, 41. inserting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] Embodiment 1:

[0040] As Figure 1 , 4 shown, a stamping die for an automobile wheel cover includes a base 1. A first die slot 2 and a second die slot 3 are provided on the base 1. A lower die 4 is movably connected in both the first die slot 2 and the second die slot 3. A shaping upper die 5 and a cutting upper die 6 are slidably connected to the base 1. The shaping upper die 5 is opposite to the first die slot 2 in the up-and-down position, and the cutting upper die 6 is opposite to the second die slot 3 in the up-and-down position. A material transfer plate 7 is slidably connected to the base 1. A first opening 8 and a second opening 9 are provided on the material transfer plate 7. The first opening 8 is placed at the notch of the first die slot 2, and the second opening 9 is placed at the notch of the second die slot 3. The base 1 includes a bracket 19. A third telescopic mechanism 20 and a fourth telescopic mechanism 21 are connected to the bracket 19. The third telescopic mechanism 19 is connected to the shaping upper die 5, and the fourth telescopic mechanism 21 is connected to the cutting upper die 6. A stabilizing frame 22 is provided on the bracket 19. A number of clamping slots 23 are provided on the stabilizing frame 22. Both the third telescopic mechanism 20 and the fourth telescopic mechanism 21 are embedded in the clamping slots 23. The stabilizing frame 22 is connected to the bracket 19.

[0041] As Figure 3 , 4 shown, a rotating gear 11 is provided on one side of the material transfer plate 7. The rotating gear 11 is rotatably connected to the base 1. The rotating gear 11 is meshed and connected to the material transfer plate 7. A slider 12 is connected to the other side of the material transfer plate 7. A chute 13 is provided on the base 1. A first spring 14 is connected in the chute 13. The slider 12 is slidably connected to the chute 13. The slider 12 is elastically connected to the first spring 14.

[0042] As Figure 4 , 5 shown, movable cavities 15 are provided below both the first die slot 2 and the second die slot 3. The movable cavities 15 are communicated with the first die slot 2 and the second die slot 3. A first telescopic mechanism 16 and a second telescopic mechanism 17 are installed in the movable cavities 15. The first telescopic mechanism 16 is connected to the lower die 4. A material rectifying ring 18 is provided in both the first die slot 2 and the second die slot 3. The material rectifying ring 18 is sleeved on the lower die 4. One end face of the material rectifying ring 18 is an inclined plane that inclines inward. The other end of the material rectifying ring 18 is connected to the second telescopic mechanism 17.

[0043] As Figure 2 , 6, as shown in FIGS. 7, a feeding structure 10 is provided on the base 1. An inclined feeding plate 24 is connected to the base 1. The feeding structure 10 includes a stop block 25 and a sliding rod 26. The stop block 25 is slidably connected to the feeding inclined plate 24. A second spring 27 is connected to the feeding inclined plate 24. The second spring 27 is elastically connected to the sliding rod 26. A push rod 29 is provided on the sliding rod 26. One end of the push rod 29 is rotatably connected to the sliding rod 26, and the other end of the push rod 29 is rotatably connected to the stop block 25. A slide rail 30 is provided on the feeding inclined plate 24. A third spring 31 is provided in the slide rail 30. The third spring 31 is connected to the stop block 25. The stop block 25 is slidably connected to the slide rail 30. A through hole is provided on the sliding rod 26. A stabilizing rod 32 is provided on the feeding inclined plate 24. One end of the stabilizing rod 32 is connected to the feeding inclined plate 24, and the other end of the stabilizing rod 32 is inserted into the through hole 33. A support rod 34 is connected to the feeding inclined plate 24. A rotating mechanism 35 is provided on one side of the support rod 34. A rotating rod 36 is provided on the other side of the support rod 34. The rotating rod 36 is connected to the rotating mechanism 35. The rotating rod 36 is rotatably connected to the support rod 34. A circular plate 37 is connected to the rotating rod 36. A convex block 38 is connected to the circular plate 37. The convex block 38 is in contact with the sliding rod 26.

[0044] As Figures 1-7 shown: The bracket 19 is connected to one side of the base 1. One end of the base 1 is an inclined surface that slopes downward, which is set as the discharge inclined surface 39. The other end of the base 1 is connected to the inclined feeding inclined plate 24. A shaping upper die 5 and a cutting upper die 6 are provided in the middle of the bracket 19. A transfer plate 7 and a rotating gear 11 are arranged in the middle of the base 1. When discharging from the second opening 9, the second opening 9 moves to be directly above the discharge inclined surface 39, so that the product automatically slides out along the discharge inclined surface 39, preventing the product from being brought back into the second mold cavity 3 by the second opening 9.

[0045] A rotating motor is provided on the base 1. The rotating motor is connected to the rotating gear 11. The surface of the rotating gear 11 is an incomplete gear, so that a rotating motor with a single rotation direction can be used for the rotating motor to achieve the effect, saving material resources. The first telescopic mechanism 16, the second telescopic mechanism 17, the third telescopic mechanism 20, and the fourth telescopic mechanism 21 all adopt a cylinder structure to control the telescopic movement of the structure.

[0046] There are a pair of stop blocks 25. Rotating groove openings 40 are provided on the lower end surface of the sliding rod 26 and the upper end surface of the stop block 25. Insertion rods 41 are provided in the rotating groove openings 40, so that both ends of the push rod 29 are respectively placed in the rotating groove openings 40 and rotatably connected to the insertion rods 41, facilitating the downward pressure of the sliding rod 26 to move the stop block 25 in the slide rail 30 and ensuring the smooth movement of the stop block 25.

[0047] A pair of stabilizing rods 32 are respectively arranged at both ends of the sliding rod 26, thereby improving the stability of the up and down displacement of the sliding rod 26.

[0048] The lower die 4 in the first die slot 2 and the second die slot 3 has the same shape. The lower die 4 in the first die slot 2 serves for overall shaping, while the lower die 4 in the second die slot 3 serves to maintain the shape during cutting to prevent deformation during cutting. The cutting upper die 6 is provided with uniform cutting blades to perforate the shaped blank.

[0049] On both sides of the blank 28 arranged vertically on the feeding inclined plate 24, raised strip structures are provided to prevent the blank 28 from deforming and queuing up laterally, ensuring the correct relative position between the stop blocks 25 and the blank 28: The two stop blocks 25 are placed on both sides in front of the blank 28 to block the blank 28. At the same time, the stop blocks 25 are arranged symmetrically left and right with the blank 28 as the central axis to ensure the balance of the push rod 29 pushing the stop blocks 25.

[0050] This application also provides a stamping method for a stamping die used for an automobile wheel cover, including the blank 28, and the following steps are included:

[0051] Step 1: The blanks 28 are arranged on the feeding inclined plate 24, and the rotating mechanism 35 is started to release the stop blocks 25, and the blanks 28 enter the transfer plate 7;

[0052] Step 2: The blank 28 enters the first die slot 2 through the first opening 8, the rising material - aligning ring 18 is raised, and the shaping upper die 5 is pressed down, and the blank 28 is pressed into shape;

[0053] Step 3: The shaping upper die 5 is reset, the lower die 4 is raised so that the shaped blank 28 is placed in the first opening 9, the rotating gear 11 is rotated, and the first opening 8 is placed at the notch of the second die slot 3;

[0054] Step 4: The shaped blank 28 enters the second die slot 3, the transfer plate 7 is reset, and the steps of Step 1 are repeated to send the blank 28 into the first die slot 2. The finishing rings 28 in the first die slot 2 and the second die slot 3 are raised to sort out the blanks 28 in their respective slots. At the same time, the shaping upper die 5 and the cutting upper die 6 are pressed down, and the blanks 28 in the two slots are respectively shaped and perforated and cut;

[0055] Step 5: The cutting upper die 6 and the shaping upper die 5 are reset, the lower die 4 of the first die slot 2 and the second die slot 3 is raised so that the shaped blank 28 is placed in the first opening 8, and the cut blank 28 is placed in the second opening 9. The rotating gear 11 is rotated, the second opening 9 sends out the cut blank 28, and the blank 28 at the first opening 8 is sent to the second opening 9, and the above steps are repeated.

[0056] Specific processing operation method:

[0057] Feeding: The blanks 28 are arranged on the feeding inclined plate 24. The stoppers 25 on both sides block the first blank 28. By activating the rotating mechanism 35, the circular plate 37 rotates driven by the rotating rod 36, and then the convex block 38 presses down the sliding rod 26. The downward pressure of the sliding rod 26 causes the push rod 29 to push the stopper 25 towards the side of the feeding inclined plate 24, so that the blank 28 slides towards the material transfer plate 7 under the action of the gravity of the feeding inclined plate 24 without obstruction. During this period, after the convex block 38 leaves the sliding rod 26, the sliding rod 26 rebounds upward under the action of the second spring 27, and the stopper 25 returns to its position under the action of the push rod 29 and the third spring 31 to block the second blank 28.

[0058] Shaping and pressing: The blank 28 enters the first die cavity 2 through the first opening 8 on the material transfer plate 7. The second telescopic mechanism 17 moves upward to make the blanking ring 18 move upward, arranging the blank 28 directly above the lower die 4. The shaping upper die 5 presses downward through the third telescopic mechanism 19 into the first die cavity 2 to close the die with the lower die 4 and perform shaping and pressing on the blank 28.

[0059] Material transfer: Reset the third telescopic mechanism 19 to make the shaping upper die 5 leave. Activate the first telescopic mechanism 16 to make the lower die 4 rise to send the shaped blank 28 into the first opening 5. Rotate the rotating gear 11 to move the material transfer plate 7 until the first opening 8 is placed at the notch of the second die cavity 3, and the shaped blank 28 enters the second die cavity 3. The toothless part of the rotating gear 11 cannot engage with the material transfer plate 7, and the material transfer plate 7 automatically returns to its position under the action of the first spring 14.

[0060] Subsequent feeding: After the material transfer plate 7 returns to its position, repeat the feeding operation to make a new blank enter the first die cavity 2.

[0061] Synchronous shaping and pressing and cutting and pressing: There is a shaped blank 28 in the second die cavity 3 and a new blank 28 in the first die cavity 2. At the same time, activate the second telescopic mechanism 17 below the first die cavity 2 and the second telescopic mechanism 17 below the second die cavity 3 to make the blanking ring 18 move upward, arranging the shaped blank 28 and the new blank 28 directly above the lower die 4. The shaping upper die 5 presses downward through the third telescopic mechanism 20 into the first die cavity 2 to close the die with the lower die 4 and perform shaping and pressing on the blank 28. At the same time, the cutting upper die 6 presses downward through the fourth telescopic mechanism 21 into the second die cavity 2 to close the die with the lower die 4 and perform cutting and pressing on the shaped blank 28 to make the shaped blank 28 have holes.

[0062] Transferring and discharging materials: Retract the telescopic mechanism three 20 and the telescopic mechanism four 21, start the telescopic mechanism one 14, so that the lower die 4 in the first die groove 2 raises the shaped blank to the first opening 5, and the lower die 4 in the second die groove 2 moves a cut blank into the second opening 9. Rotate the rotating gear 11 to move the transfer plate 7 until the first opening 5 is placed at the notch of the second die groove 3. The shaped blank 28 enters the second die groove 3, and the cut blank 28 is moved away from the second opening 9 and collected. Reset the transfer plate 7 and repeat the above operations.

Claims

1. A stamping die for an automobile wheel cover, characterized in that, It includes a base (1), on which a first mold groove (2) and a second mold groove (3) are provided. A lower mold (4) is movably connected in both the first mold groove (2) and the second mold groove (3). A shaping upper mold (5) and a cutting upper mold (6) are slidably connected to the base (1). The shaping upper mold (5) is opposite to the first mold groove (2) in the up-and-down position, and the cutting upper mold (6) is opposite to the second mold groove (3) in the up-and-down position. A material transfer plate (7) is slidably connected to the base (1). The material transfer plate (7) is provided with a first opening (8) and a second opening (9). The first opening (8) is located at the notch of the first mold groove (2), and the second opening (9) is located at the notch of the second mold groove (3). An inlet structure (10) is provided on the base (1). A rotating gear (11) is provided on one side of the material transfer plate (7). The rotating gear (11) is rotatably connected to the base (1), and the rotating gear (11) is meshed with the material transfer plate (7). A slider (12) is connected to the other side of the material transfer plate (7). A chute (13) is provided on the base (1). A first spring (14) is connected in the chute (13). The slider (12) is slidably connected to the chute (13), and the slider (12) is elastically connected to the first spring (14). An active cavity (15) is provided below both the first mold groove (2) and the second mold groove (3). The active cavity (15) is communicated with the first mold groove (2) and the second mold groove (3). A first telescopic mechanism (16) and a second telescopic mechanism (17) are installed in the active cavity (15). The first telescopic mechanism (16) is connected to the lower mold (4). A material rectifying ring (18) is provided in both the first mold groove (2) and the second mold groove (3). The material rectifying ring (18) is sleeved on the lower mold (4). One end face of the material rectifying ring (18) is an inclined plane inclined inward, and the other end of the material rectifying ring (18) is connected to the second telescopic mechanism (17). An inlet inclined plate (24) is connected to the base (1). The inlet structure (10) includes a stop block (25) and a slide rod (26). The stop block (25) is slidably connected to the inlet inclined plate (24). A second spring (27) is connected to the inlet inclined plate (24). The second spring (27) is elastically connected to the slide rod (26). A push rod (29) is provided on the slide rod (26). One end of the push rod (29) is rotatably connected to the slide rod (26), and the other end of the push rod (29) is rotatably connected to the stop block (25).

2. The stamping die for an automobile wheel cover according to claim 1, characterized in that, The base (1) includes a bracket (19), on which a third telescopic mechanism (20) and a fourth telescopic mechanism (21) are connected. The third telescopic mechanism (20) is connected to the shaping upper die (5), and the fourth telescopic mechanism (21) is connected to the cutting upper die (6). A stabilizing frame (22) is provided on the bracket (19), and a number of card slots (23) are provided on the stabilizing frame (22). Both the third telescopic mechanism (20) and the fourth telescopic mechanism (21) are embedded in the card slots (23), and the stabilizing frame (22) is connected to the bracket (19).

3. The stamping die for an automobile wheel cover according to claim 1, characterized in that, A slide rail (30) is provided on the feeding inclined plate (24), a third spring (31) is provided in the slide rail (30), the third spring (31) is connected to a stopper (25), and the stopper (25) is slidably connected to the slide rail (30).

4. The stamping die for an automobile wheel cover according to claim 3, characterized in that, A through hole is provided on the slide bar (26), a stabilizing rod (32) is provided on the feeding inclined plate (24), one end of the stabilizing rod (32) is connected to the feeding inclined plate (24), and the other end of the stabilizing rod (32) is inserted into the through hole (33).

5. The stamping die for an automobile wheel cover according to claim 4, characterized in that, A support rod (34) is connected to the feeding inclined plate (24). A rotating mechanism (35) is provided on one side of the support rod (34), and a rotating rod (36) is provided on the other side of the support rod (34). The rotating rod (36) is connected to the rotating mechanism (35), the rotating rod (36) is rotatably connected to the support rod (34), a circular plate (37) is connected to the rotating rod (36), a convex block (38) is connected to the circular plate (37), and the convex block (38) is in contact with the slide bar (26).

6. A stamping method for a stamping die used for an automobile wheel cover, adopting the stamping die for an automobile wheel cover described in claim 5, including a blank (28), characterized in that , including the following steps: Step 1: Blanks (28) are arranged on the feeding inclined plate, the rotating mechanism (35) is started to release the stopper (25), and the blanks (28) enter the transfer plate (7). Step 2: The blanks (28) enter the first die cavity (2) through the first opening (8), the shaping ring (18) is raised, the shaping upper die (5) is pressed down, and the blanks (28) are shaped by pressing. Step 3: The shaping upper die (5) is reset, the lower die (4) is raised so that the shaped blanks (28) are placed in the first opening (9), the rotating gear (11) is rotated, and the first opening (8) is placed at the notch of the second die cavity (3). Step 4: The shaped blanks (28) enter the second die cavity (3), the transfer plate (7) is reset, and step 1 is repeated to feed the blanks (28) into the first die cavity (2). The shaping rings (18) in the first die cavity (2) and the second die cavity (3) are raised to sort the blanks (28) in their respective cavities. At the same time, the shaping upper die (5) and the cutting upper die (6) are pressed down, and the blanks (28) in the two cavities are respectively shaped and cut for opening. Step Five: Reset the cutting upper die (6) and the shaping upper die (5), raise the lower die (4) of the first die slot (2) and the second die slot (3) so that the shaped blank (28) is placed in the first opening (8), and the cut blank (28) is placed in the second opening (9). Rotate the rotating gear (11), the second opening (9) sends out the cut blank (28), and the blank (28) at the first opening (8) is sent to the second opening (9). Repeat the above steps.

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