Automatic feeding and stamping device for sheet metal parts

Abstract

The invention discloses an automatic sheet metal part feeding and stamping device which comprises a workbench, a first mounting groove is formed in the workbench, a lifting table is mounted in the first mounting groove, a plurality of sheet metal parts are stacked on the lifting table, and a supporting mold and a pushing assembly are arranged in front of and behind the stacked sheet metal parts correspondingly. A first ejection assembly and a lifting clamping ejection mechanism are arranged on the two sides of each sheet metal part respectively, a mounting hole is formed in the center of the supporting die, an automatic inclined ejection assembly is mounted in the mounting hole, a stamping mechanism is arranged in front of the supporting die, a rubber pad is arranged between the supporting die and the stamping mechanism, a support is arranged on a pushing assembly, and a distance sensor is mounted on the support. The distance sensor is located over the multiple stacked sheet metal parts, a control module is further arranged on the workbench, the pushing assembly, the distance sensor, the stamping mechanism and the lifting clamping ejection mechanism are all electrically connected with the control module, the sheet metal parts do not need to be manually placed one by one, the working efficiency is improved, and the device is simple in structure and convenient to maintain.

Description

Technical Field

[0001] The design of the present invention belongs to the technical field of automatic feeding devices for sheet metal parts, and specifically relates to an automatic feeding and stamping device for sheet metal parts. Background Technique

[0002] Sheet metal is a process for comprehensive processing of metal sheets, involving various cold working techniques such as cutting, bending, stamping, and welding, and is mainly used in the manufacture of industrial products such as metal shells, brackets, and chassis. Through modern equipment such as numerically controlled machine tools (CNC) and laser cutting combined with CAD design, materials such as stainless steel, aluminum alloy, and galvanized steel plates can be efficiently processed, and it is widely used in the fields of automobile manufacturing, electronic equipment, architectural decoration, and aerospace.

[0003] In the traditional sheet metal stamping production process flow, a stamping machine is usually used to process single sheet metal parts. The feeding process in traditional production mainly relies on manual operation or automated equipment to complete. By using the manual method for feeding, it can ensure that one sheet of metal is placed on the die carrier for stamping processing each time. However, this method not only has low efficiency, but also long-term manual operation easily makes workers feel fatigued, thus affecting work efficiency.

[0004] In order to improve production efficiency, some enterprises have introduced automatic feeding equipment including robotic arms, vibrating bowls, etc. These devices can achieve continuous automated feeding, ensuring that one sheet metal part can be conveyed to the die carrier for stamping processing each time. However, this type of equipment requires a high investment cost, and due to its complex structure, the maintenance difficulty is high. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic feeding and stamping device for sheet metal parts to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution:

[0007] An automatic feeding and stamping device for sheet metal parts, including a workbench. There is a first installation groove on the workbench, and a lifting table is installed in the first installation groove. A number of sheet metal parts are stacked and placed on the lifting table. A die carrier and a pushing component are respectively arranged in front of and behind the number of stacked sheet metal parts. A first ejecting component and a lifting clamping and ejecting mechanism are respectively arranged on both sides of the number of sheet metal parts. There is an installation hole in the center of the die carrier, and an automatic inclined ejecting component is installed in the installation hole. A stamping mechanism is arranged in front of the die carrier, and a rubber pad is arranged between the die carrier and the stamping mechanism. There is a bracket on the pushing component, and a distance sensor is installed on the bracket. The distance sensor is located directly above the number of stacked sheet metal parts. A control module is also arranged on the workbench. The pushing component, the distance sensor, the stamping mechanism, and the lifting clamping and ejecting mechanism are all electrically connected to the control module.

[0008] Further, the pushing component includes a cushion platform, on which a pushing cylinder electrically connected to the control module is installed, and the lower end face of the output end of the pushing cylinder is slightly higher than the top of the mold carrier.

[0009] Further, sliding grooves are symmetrically arranged on both sides of the mold carrier, and calibration components are movably connected in the sliding grooves. Each of the two calibration components includes a fixed rod, the two ends of which are fixedly connected to the two side walls of the sliding groove. A calibration block is movably connected to the fixed rod, and a third compression spring is sleeved outside the fixed rod. One end of the third compression spring abuts against the side wall of the sliding groove, and the other end abuts against the calibration block. The calibration block is provided with a guiding arc surface on one side of the pushing component.

[0010] Further, the first ejecting component includes a first fixed block, on which a first movable groove is provided. A first ejecting block is movably connected in the first movable groove. A plurality of first guiding columns are arranged on the side of the first ejecting block away from the sheet metal part. The plurality of first guiding columns extend outwards through the first fixed block, and a first limiting sleeve is sleeved at this end. A first compression spring is sleeved outside the plurality of first guiding columns. One end of each of the plurality of first compression springs abuts against the inner wall of the first movable groove, and the other end abuts against the ejecting block.

[0011] Further, the lifting and clamping and ejecting mechanism includes an electric lifting rod II installed in the third installation groove. A second fixed block is fixedly installed above the electric lifting rod II. A second movable groove is provided on the second fixed block. An electric push rod is provided on the top of the second fixed block. The telescopic ends of the electric push rod all extend into the second movable groove, and rubber clamping blocks are arranged at the ends. A pressure sensor is embedded at the bottom of the rubber clamping block. The electric push rod, the electric lifting rod II, and the pressure sensor are all electrically connected to the control module. A third movable groove is provided at one end of the second movable groove away from the sheet metal part. A second ejecting component is arranged in the third movable groove.

[0012] Further, guiding grooves are symmetrically arranged on both sides of the workbench where the third installation groove is located. Guiding columns III are arranged at the bottom of the second fixed block and inserted into the guiding grooves.

[0013] Further, the second ejecting component includes a second ejecting block. A plurality of second guiding columns are arranged at the end of the second ejecting block away from the second movable groove. The plurality of second guiding columns extend outwards through the second fixed block, and a second limiting sleeve is sleeved at this end. A second compression spring is sleeved outside the plurality of second guiding columns. One end of each of the plurality of second compression springs abuts against the third movable groove, and the other end abuts against the second ejecting block. The sum of the elastic coefficients of the plurality of second pressure springs is less than the sum of the elastic coefficients of the first pressure spring.

[0014] Furthermore, the automatic inclined ejecting component includes an inclined ejecting block and a pushing block respectively arranged at two ends of the mounting hole. The inclined ejecting block and the pushing block are provided with mutually cooperating inclined surfaces. One end of the inclined ejecting block away from the pushing block is provided with a rotating shaft. Rotating grooves are provided on two side walls of the mounting hole. A cooperating part is installed in the rotating groove. The top of the cooperating part is concave, and together with the rotating groove, a rotating hole is formed. The rotating shaft extends into the rotating hole. One end of the pushing block away from the inclined ejecting block is provided with a plurality of guide posts four. The plurality of guide posts four extend to the outside of the mold carrier, and a limiting sleeve three is arranged at the end. A compression spring four is sleeved outside the guide posts four. One end of the compression spring four abuts against the pushing block, and the other end abuts against the side wall of the mounting hole. The moving range of the pushing block is within the vertical projection range of the inclined surface of the inclined ejecting block. The inclined ejecting block is located on one side of the stamping mechanism, and the pushing block is located on one side of the pushing component.

[0015] Furthermore, limiting arc grooves centered on the axis of the rotating shaft are also provided on two side walls of the mounting hole. Limiting shafts inserted into the limiting arc grooves are provided on both sides of the inclined ejecting block.

[0016] Advantages of the present invention:

[0017] The device of the present invention has a simple structure and is convenient for maintenance. By using a distance sensor to monitor the stacking height in real time and combining with a control module, the stacking quantity can be automatically identified and corresponding operations can be triggered, avoiding the inefficient link of manual counting one by one, and improving production efficiency. Secondly, by the cooperation of the ejecting component and the lifting clamping mechanism, redundant sheet metal parts can be processed, and the stacking height can be dynamically adjusted to ensure that only a single sheet metal part is pushed onto the mold carrier each time, avoiding stamping failures caused by excessive stacking. The stamped sheet metal parts are tilted and ejected by the automatic inclined ejecting component, so that they slide out automatically. With the design of rubber pads, the risk that the sheet metal parts fall from the mold carrier and impact the workbench, resulting in deformation, can be effectively avoided.

[0018] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0019] Figure 1 : Overall structure diagram of the present invention.

[0020] Figure 2 : Exploded view of the partial structure of the workbench of the present invention.

[0021] Figure 3 : Overall structure diagram of the mold carrier of the present invention.

[0022] Figure 4 : Exploded view of the overall mold carrier of the present invention.

[0023] Figure 5 : First sectional view of the ejecting component of the present invention.

[0024] Figure 6 : Overall structural diagram of the second ejector component of the present invention.

[0025] Figure 7 : Cross-sectional view of the second ejector component of the present invention.

[0026] Reference numerals: 1, workbench; 2, sheet metal part; 3, mold support; 4, pushing component; 5, first ejector component; 6, lifting and clamping ejector mechanism; 7, automatic inclined ejector component; 8, stamping mechanism; 9, control module; 11, first installation groove; 12, lifting table; 13, rubber pad; 14, third installation groove; 15, guiding groove; 31, sliding groove; 32, calibration component; 33, fixing rod; 34, calibration block; 35, third compression spring; 36, guiding arc surface; 37, installation hole; 41, pad high platform; 42, pushing cylinder; 43, bracket; 44, distance sensor; 51, first fixing block; 52, first movable groove; 53, first ejector block; 54, first guiding column; 55, first limiting sleeve; 56, first compression spring; 61, second electric lifting rod; 62, second fixing block; 63, second movable groove; 64, electric push rod; 65, rubber clamping block; 66, pressure sensor; 67, third movable groove; 68, second ejector component; 681, second ejector block; 682, second guiding column; 683, second limiting sleeve; 684, second compression spring; 69, third guiding column; 71, inclined ejector block; 72, pushing block; 73, rotating shaft; 74, limiting shaft; 75, fourth guiding column; 76, third limiting sleeve; 77, fourth compression spring; 371, rotating groove; 372, fitting part; 373, rotating hole; 374, limiting arc groove. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] Please refer to Figure 1-7 ;

[0029] An automatic feeding and stamping device for sheet metal parts 2, comprising a workbench 1. There is a first mounting groove 11 on the workbench 1, and a lifting table 12 is installed in the first mounting groove 11. When the lifting table 12 is in the maximum contracted state, its upper end surface is flush with the upper end surface of the workbench 1. A number of sheet metal parts 2 are stacked on the lifting table 12. A mold support 3 and a pushing component 4 are respectively arranged in front of and behind the number of stacked sheet metal parts 2. The pushing component 4 pushes a single sheet metal part 2 with its lower end surface flush with or slightly higher than the upper end surface of the mold support 3 onto the mold support 3 for stamping operation. Therefore, when stacking the sheet metal parts 2, workers need to count the sheet metal parts 2 one by one, but counting one by one will reduce the working efficiency of the workers. In order to improve the working efficiency, a first ejecting component 5 and a lifting clamping and ejecting mechanism 6 are respectively arranged on both sides of the number of sheet metal parts 2. The first ejecting component 5 ejects the redundant sheet metal parts 2 towards the lifting clamping and ejecting mechanism 6, causing the redundant sheet metal parts 2 to be misaligned with other sheet metal parts 2. Subsequently, the lifting clamping and ejecting mechanism 6 clamps and lifts these redundant sheet metal parts 2 to ensure that it will not affect the work of the pushing component 4. There is a mounting hole 37 in the center of the mold support 3, and an automatic inclined ejecting component 7 is installed in the mounting hole 37. There is a stamping mechanism 8 in front of the mold support 3. A rubber pad 13 is arranged between the mold support 3 and the stamping mechanism 8. When the stamping mechanism 8 finishes stamping the sheet metal part 2, the automatic inclined ejecting component 7 automatically inclines and ejects the stamped sheet metal part 2, and then the stamped sheet metal part 2 slides onto the rubber pad 13 along the inclined surface direction of the automatic inclined ejecting component 7, facilitating the workers to take away the sheet metal part 2. The rubber pad 13 is used to prevent the sheet metal part 2 from deforming due to hitting the workbench when it falls. There is a support 43 on the pushing component 4, and a distance sensor 44 is installed on the support 43. Preferably, the distance sensor 44 can adopt a common laser sensor or infrared sensor. The distance sensor 44 is located directly above the number of stacked sheet metal parts 2. There is also a control module 9 on the workbench 1. The pushing component 4, the distance sensor 44, the stamping mechanism 8, and the lifting clamping and ejecting mechanism 6 are all electrically connected to the control module 9. The distance sensor 44 is used to detect the stacking height of the sheet metal parts 2. For example, the vertical distance between the distance sensor 44 and the workbench 1 is 50 cm, the height of the mold support 3 is 13 cm, and the thickness of the sheet metal part 2 is 1 cm. Therefore, at most 14 sheet metal parts 2 can be stacked, and the total height of 14 sheet metal parts 2 is 14 cm;When 15 or more sheet metal parts 2 are stacked in total, the distance sensor 44 detects that the distance between the highest point of the stacked sheet metal parts 2 and it is less than 36 cm. At this time, the distance sensor 44 will transmit a signal to the control module 9 to delay the triggering of the pushing component 4, so that the first ejecting component 5 and the lifting clamping and ejecting mechanism 6 have enough time to clamp and lift the excess sheet metal parts 2. The delay time can be set by the control module 9. For example, set a delay of 30 seconds. After 30 seconds, the pushing component 4 pushes the 14th sheet metal part 2 onto the mold 3 for stamping. After stamping is completed, the automatic inclined ejecting component 7 tilts and lifts the sheet metal part 2 to make the sheet metal part 2 slide away automatically. Then the lifting table 12 rises by 1 cm, and the pushing component 4 pushes the uppermost sheet metal part 2 onto the mold 3 for stamping. Repeat the above steps until the lifting table 12 rises to 13 cm, and the pushing component 4 extends for the last time to complete the stamping of all these sheet metal parts 2. Then the lifting table 12 descends and resets, and the lifting clamping and ejecting mechanism 6 also descends until the distance between the upper end face of the sheet metal part 2 clamped at the uppermost position and the distance sensor 44 is 36 cm, and then stops lifting. Subsequently, the lifting table 12 rises until it contacts the lower end face of the lowermost sheet metal part 2 and stops. The lifting clamping and ejecting mechanism 6 ejects the excess sheet metal parts 2 onto the lifting table 12. After the lifting clamping component ejects the sheet metal part 2, it descends and transmits an instruction to the control module 9. The control module 9 controls the pushing component 4 to start. The pushing component 4 then pushes the uppermost sheet metal part 2 onto the mold 3 for stamping. Repeat the above steps until the lifting table 12 rises to 13 cm, and the pushing component 4 extends for the last time. When stamping is completed, the lifting table 12 resets. When the distance sensor 44 detects that the distance between the highest point of the stacked sheet metal parts 2 and it is 36 cm, it indicates that the number of stacked sheet metal parts 2 is exactly 14. The distance sensor 44 directly transmits a signal to the control module 9, and the control module 9 directly controls the pushing component 4 to push the 14th sheet metal part 2 onto the mold 3 for stamping. After stamping is completed, the automatic inclined ejecting component 7 tilts and lifts the sheet metal part 2 to make the sheet metal part 2 slide away automatically. Then the lifting table 12 rises by 1 cm, and the pushing component 4 pushes the uppermost sheet metal part 2 onto the mold 3 for stamping. Repeat the above steps until the lifting table 12 rises to 13 cm, and the pushing component 4 extends for the last time to complete the stamping of all these sheet metal parts 2. When the stamping of these sheet metal parts 2 is completed, the lifting table 12 resets;When the distance sensor 44 detects that the distance between it and the highest point of the stacked sheet metal parts 2 is greater than 36 cm, that is, the stacking quantity of the sheet metal parts 2 is less than 14 pieces, the distance sensor 44 transmits a signal to the control module 9. The control module 9 controls the delayed triggering of the pushing component 4. For example, a delay of 10 seconds is set. At this time, the lifting table 12 rises until the distance between the upper end surface of the uppermost sheet metal part 2 and the distance sensor 44 is 36 cm. Then, the distance sensor 44 directly transmits a signal to the control module 9, and the control module 9 directly controls the pushing component 4 to push the uppermost sheet metal part 2 onto the die carrier 3 for stamping. After stamping is completed, the automatic inclined ejection component 7 inclines and lifts the sheet metal part 2, causing the sheet metal part 2 to slide away automatically. Then, the lifting table 12 rises by 1 cm, and the pushing component 4 pushes the uppermost sheet metal part 2 onto the die carrier 3 for stamping again. Repeat the above steps until the lifting table 12 rises to 13 cm. The pushing component 4 extends for the last time. When stamping is completed, the lifting table 12 resets. This ensures that each time a single sheet metal part 2 can be pushed onto the die carrier 3, eliminating the need for manual placement of the sheet metal parts 2 one by one, reducing work fatigue, improving work efficiency, and having a simple device structure that is convenient for maintenance.

[0030] In this embodiment, the pushing component 4 includes a cushion platform 41. A pushing cylinder 42 electrically connected to the control module 9 is installed on the cushion platform 41. The lower end surface of the output end of the pushing cylinder 42 is slightly higher than the top of the die carrier 3, avoiding unnecessary friction caused by contact between the pushing cylinder 42 and the top of the die carrier 3 during the pushing operation, which may lead to component wear or affect the operation accuracy.

[0031] In this embodiment, sliding grooves 31 are symmetrically arranged on both sides of the die carrier 3. Calibration components 32 are movably connected in the sliding grooves 31. Both calibration components 32 include fixing rods 33. The two ends of the fixing rod 33 are fixedly connected to the two side walls of the sliding groove 31. A calibration block 34 is movably connected to the fixing rod 33. A third compression spring 35 is sleeved outside the fixing rod 33. One end of the third compression spring 35 abuts against the side wall of the sliding groove 31, and the other end abuts against the calibration block 34. When the pushing component 4 pushes the sheet metal part 2 towards the die carrier 3 and it enters between the two calibration blocks 34, the two third compression springs 35 are compressed. As the third compression springs 35 are compressed, they will exert a reaction force on the calibration block 34 in the direction towards the sheet metal part 2, thereby prompting the calibration block 34 to gently push the sheet metal part 2 towards the central position, realizing the function of automatic calibration. A guiding arc surface 36 is provided on one side of the calibration block 34 where the pushing component 4 is located, facilitating the insertion of the sheet metal part 2.

[0032] In this embodiment, the first ejecting component 5 includes a first fixing block 51. A first movable slot 52 is provided on the first fixing block 51. A first ejecting block 53 is movably connected in the first movable slot 52. On the side of the first ejecting block 53 away from the sheet metal part 2, there are a number of first guide posts 54. The number of first guide posts 54 extend outwards through the first fixing block 51, and a first limiting sleeve 55 is sleeved on this end. A first compression spring 56 is sleeved on the number of guide posts. One end of the number of first compression springs 56 abuts against the inner wall of the first movable slot 52, and the other end abuts against the ejecting block. The first ejecting block 53 is provided with an inclined surface above the side of the sheet metal part 2. When placing the stacked sheet metal parts 2, the sheet metal part 2 can be directly pressed down. At this time, the sheet metal part 2 will press the first ejecting block 53 back into the first movable slot 52 through the inclined surface, resulting in the compression of the first compression spring 56. With the completion of the placement of the sheet metal part 2, the first compression spring 56 begins to recover, prompting the first ejecting block 53 to pop out from the first movable slot 52. If the number of stacked sheet metal parts 2 exceeds the set number of 14 pieces, the first ejecting block 53 will eject the redundant sheet metal parts 2 at the topmost part under the push of the first compression spring 56, causing these redundant sheet metal parts 2 to have a certain dislocation relative to the sheet metal parts 2 below, facilitating the lifting and clamping of the lifting and clamping and ejecting mechanism 6.

[0033] In this embodiment, the lifting clamping and ejecting mechanism 6 includes an electric lifting rod two 61 installed in the third installation groove 14. A second fixing block 62 is fixedly installed above the electric lifting rod two 61. The height of the second fixing block 62 can be controlled by the electric lifting rod two 61 to realize the lifting of the second fixing block 62. A second movable groove 63 is provided on the second fixing block 62. An electric push rod 64 is provided at the top of the second fixing block 62. The telescopic ends of the electric push rod 64 all extend into the second movable groove 63, and rubber clamping blocks 65 are provided at the ends. A pressure sensor 66 is embedded at the bottom of the rubber clamping block 65. The electric push rod 64, the electric lifting rod two 61, and the pressure sensor 66 are all electrically connected to the control module 9. A third movable groove 67 is provided at one end of the second movable groove 63 away from the sheet metal part 2. An ejecting component two 68 is provided in the third movable groove 67. Here it should be noted that there is an avoidance space above the second movable groove 63. When the electric push rod 64 is in a contracted state, the rubber clamping block 65 and the pressure sensor 66 are located in the avoidance space to prevent blocking the ejection of the ejecting component two 68. When it is detected that there are excess sheet metal parts 2, the control module 9 controls the electric push rod 64 to trigger with a time delay, such as a 10-second delay, to ensure that the excess sheet metal parts 2 are completely pushed into the second movable groove 63, and the ejecting component two 68 is pushed back into the third movable groove 67. When the excess sheet metal parts 2 are pushed into the second movable groove 63 and abut against the ejecting component two 68, and the ejecting component two 68 is pushed back into the third movable groove 67. After 10 seconds, the telescopic end of the electric push rod 64 drives the rubber clamping block 65 to move downward, and cooperates with the bottom of the second movable groove 63 to limit and clamp the sheet metal part 2. After the pressure sensor 66 senses the clamping pressure, the electric push rod 64 stops extending to prevent damage to the electric push rod 64. When all the sheet metal parts 2 on the lifting table 12 are completely stamped, the lifting table 12 descends and retracts, and the lifting clamping and ejecting mechanism 6 follows and descends until the distance between the upper end surface of the sheet metal part 2 clamped at the top and the distance sensor 44 is 34 - 36 cm, then the lifting stops. The lifting table 12 rises until it contacts the lower end surface of the lowermost sheet metal part 2 and then stops. Then the lifting clamping and ejecting mechanism 6 ejects the excess sheet metal parts 2 onto the lifting table 12. After the lifting clamping component ejects the sheet metal part 2, it will descend and transmit an instruction to the control module 9. The control module 9 controls the pushing component 4 to start. The pushing component 4 then pushes the uppermost sheet metal part 2 onto the die carrier 3 for stamping. Repeat the above steps until the lifting table 12 rises 13 cm. The pushing component 4 extends for the last time. When the stamping is completed, the lifting table 12 contracts and restores to its original state.

[0034] In this embodiment, guiding grooves 15 are symmetrically provided on both sides of the workbench 1 at the positions of the third installation groove 14. Guide posts three 69 inserted into the interiors of the guiding grooves 15 are provided at the bottom of the second fixing block 62 to ensure the stable lifting of the second fixing block 62 and prevent the second fixing block 62 from tilting during lifting.

[0035] In this embodiment, the second ejecting component 68 includes a second ejecting block 681. At one end of the second ejecting block 681 away from the second movable slot 63, there are a number of second guide posts 682. The number of second guide posts 682 extends outwards through the second fixing block 62, and a second limiting sleeve 683 is sleeved on this end. A number of second compression springs 684 are sleeved on the second guide posts 682. One end of the number of second compression springs 684 abuts against the third movable slot 67, and the other end abuts against the second ejecting block 681. The sum of the elastic coefficients of the number of second compression springs 684 is less than the sum of the elastic coefficients of the first compression spring 56. When the redundant sheet metal parts 2 are pushed into the second movable slot 63, they will abut against the second ejecting block 681 and push the second ejecting block 681 back into the third movable slot 67. At this time, the second compression springs 684 are compressed by force. Since the side of the rubber clamping block 65 will abut against the second ejecting block 681 when the sheet metal part 2 is clamped and limited, the second compression springs 684 cannot return to their original state. When the electric push rod 64 retracts, the restriction of the rubber clamping block on the second ejecting block 681 is released. At this time, the second compression springs 684 return to their original state and push the second ejecting block 681 out, and the redundant sheet metal parts 2 are pushed out together.

[0036] In this embodiment, the automatic inclined ejector assembly 7 includes a lifter block 71 and a pusher block 72 respectively arranged at both ends of the mounting hole 37. The lifter block 71 and the pusher block 72 are provided with mating inclined surfaces. One end of the lifter block 71 away from the pusher block 72 is provided with a rotating shaft 73. Rotating grooves 371 are provided on both side walls of the mounting hole 37. A mating part 372 is installed in the rotating groove 371. The top of the mating part 372 is concave, and together with the rotating groove 371, it forms a rotating hole 373. The rotating shaft 73 extends into the rotating hole 373, so that the lifter block 71 rotates along the rotating shaft 73. One end of the pusher block 72 away from the lifter block 71 is provided with a number of fourth guide posts 75. The number of fourth guide posts 75 extends to the outside of the mold carrier 3, and a third limit sleeve 76 is provided at the end. A fourth compression spring 77 is sleeved outside the fourth guide posts 75. One end of the fourth compression spring 77 abuts against the pusher block 72, and the other end abuts against the side wall of the mounting hole 37. When the sheet metal part 2 is pressed to abut against the lifter block 71, it will gradually drive the lifter block 71 to rotate downward until the lifter block 71 is flush with the upper end surface of the concave part of the mold carrier 3 for forming the sheet metal part 2. When the lifter block 71 rotates downward, it will press the pusher block 72 away from it, so that the fourth compression spring 77 contracts. When the sheet metal part 2 is pressed by the pressing mechanism 8 and contacts the lifter block 71, the sheet metal part 2 will gradually apply a downward pressure to the lifter block 71, prompting the lifter block 71 to rotate downward around the rotating shaft 73. During this process, the lifter block 71 pushes the pusher block 72 to move away from the lifter block 71 through its inclined surface, resulting in the contraction of the fourth compression spring 77. Once the pressing mechanism 8 completes the pressing and rises, the fourth compression spring 77 begins to recover, generating a reaction force to push the pusher block 72 forward. At the same time, since the lifter block 71 is no longer under the pressure from the pressing mechanism 8, it also begins to rotate upward back to its initial position, thus tilting up the pressed and formed sheet metal part 2. The tilted-up sheet metal part 2 slides onto the rubber pad 13 along the inclined surface of the lifter block 71, eliminating the need for manual removal of the sheet metal part 2 from the mold carrier 3. The movement range of the pusher block 72 is within the vertical projection range of the inclined surface of the lifter block 71, preventing the lifter block 71 from being difficult to rotate downward. The lifter block 71 is located on one side of the pressing mechanism 8, and the pusher block 72 is located on one side of the pushing assembly 4, used to bounce the pressed sheet metal part 2 onto the rubber pad 13, protecting the sheet metal part 2 from impact damage.

[0037] In this embodiment, limiting arc grooves 374 centered on the axis of the rotating shaft 73 are further provided on both side walls of the mounting hole 37. Limiting shafts 74 inserted into the limiting arc grooves 374 are provided on both sides of the lifter block 71, used to limit the rotation angle of the lifter block 71, preventing it from deviating from the normal working position due to excessive rotation angle during the ejection process, thereby reducing the need for manual intervention.

[0038] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0039] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. An automatic feeding and punching device for sheet metal parts (2), comprising a workbench (1), the workbench (1) being provided with a mounting groove (11), a lifting platform (12) being installed in the mounting groove (11), a plurality of sheet metal parts (2) being stacked and placed on the lifting platform (12), a support mold (3) and a pushing assembly (4) being respectively provided in front and rear of the plurality of stacked sheet metal parts (2), an ejection assembly (5) and a lifting clamping and ejection mechanism (6) being respectively provided on both sides of the plurality of sheet metal parts (2), a mounting hole (37) being provided in the center of the support mold (3), an automatic A movable oblique ejector assembly (7), a punching mechanism (8) is provided in front of the support die (3), a rubber pad (13) is provided between the support die (3) and the punching mechanism (8), a bracket (43) is provided on the pushing assembly (4), a distance sensor (44) is installed on the bracket (43), and the distance sensor (44) is located directly above a plurality of stacked sheet metal parts (2), and a control module (9) is also provided on the workbench (1), and the pushing assembly (4), the distance sensor (44), the punching mechanism (8), and the lifting clamping ejector mechanism (6) are all electrically connected to the control module (9).

2. The automatic feeding and punching device for sheet metal parts (2) according to claim 1, characterized in that: The pushing assembly (4) comprises a raised platform (41), on which is mounted a pushing cylinder (42) electrically connected to the control module (9), wherein the lower end surface of the output end of the pushing cylinder (42) is slightly higher than the top of the support mold (3).

3. The automatic feeding and punching device for sheet metal parts (2) according to claim 1, characterized in that: The two sides of the support mold (3) are symmetrically provided with slide grooves (31), and the slide grooves (31) are movably connected with calibration components (32). The two calibration components (32) each include a fixed rod (33), and the two ends of the fixed rod (33) are fixedly connected to the two side walls of the slide groove (31). The fixed rod (33) is movably connected with a calibration block (34). The fixed rod (33) is covered with a compression spring three (35), one end of the compression spring three (35) is in contact with the side wall of the slide groove (31), and the other end is in contact with the calibration block (34). The calibration block (34) is provided with an arc guide surface (36) on one side of the pushing component (4).

4. The automatic feeding and punching device for sheet metal parts (2) according to claim 1, characterized in that: The ejection assembly (5) comprises a fixed block (51), a movable groove (52) is provided on the fixed block (51), an ejection block (53) is movably connected in the movable groove (52), a plurality of guide columns (54) are provided on a side of the ejection block (53) away from the sheet metal component (2), the plurality of guide columns (54) pass through the fixed block (51) and extend outwards, and a limiting sleeve (55) is sleeved on the end, the plurality of guide columns are sleeved with compression springs (56), one end of the plurality of compression springs (56) abuts against the inner wall of the movable groove (52), and the other end abuts against the ejection block.

5. The automatic feeding and punching device for sheet metal parts (2) according to claim 1, characterized in that: The lifting, clamping and ejecting mechanism (6) comprises an electric lifting rod (61) installed in a mounting groove (14), a fixed block (62) is fixedly installed above the electric lifting rod (61), a movable groove (63) is provided on the fixed block (62), an electric push rod (64) is provided on the top of the fixed block (62), the telescopic ends of the electric push rod (64) are extended into the movable groove (63), and a rubber clamping block (65) is provided at the end, and a pressure sensor (66) is embedded in the bottom of the rubber clamping block (65), the electric push rod (64), the electric lifting rod (61) and the pressure sensor (66) are all electrically connected to the control module (9), and a movable groove (67) is provided at one end of the movable groove (63) away from the sheet metal part (2), and an ejection assembly (68) is provided in the movable groove (67).

6. The automatic feeding and punching device for sheet metal parts (2) according to claim 5, characterized in that: The workbench (1) is symmetrically provided with guide grooves (15) on both sides of the installation groove (14), and the bottom of the fixing block (62) is provided with guide columns (69) inserted into the guide grooves (15).

7. The automatic feeding and punching device for sheet metal parts (2) according to claim 6, characterized in that: The ejection assembly 2 (68) includes an ejection block 2 (681), and a plurality of guide columns 2 (682) are provided at one end of the ejection block 2 (681) away from the movable groove 2 (63). The plurality of guide columns 2 (682) extend outward through the fixed block 2 (62) and are covered with a limiting sleeve 2 (683). The plurality of guide columns 2 (682) are covered with compression springs 2 (684). One end of the plurality of compression springs 2 (684) abuts against the movable groove 3 (67), and the other end abuts against the ejection block 2 (681). The sum of the elastic coefficients of the plurality of pressure springs 2 is less than the sum of the elastic coefficients of the pressure springs 1.

8. The automatic feeding and punching device for sheet metal parts (2) according to claim 1, characterized in that: The automatic inclined ejection assembly (7) comprises an inclined ejection block (71) and a push block (72) respectively arranged at two ends of the mounting hole (37); the inclined ejection block (71) and the push block (72) are provided with mutually matching inclined surfaces; the end of the inclined ejection block (71) away from the push block (72) is provided with a rotating shaft (73); the two side walls of the mounting hole (37) are provided with a rotating groove (371); a matching piece (372) is installed in the rotating groove (371); the top of the matching piece (372) is concave and cooperates with the rotating groove (371) to form a rotating hole (373); the rotating shaft (73) extends to the rotating hole (373), a plurality of guide columns four are provided at one end of the push block (72) away from the inclined top block (71), and the plurality of guide columns four extend to the outside of the support mold (3) and are provided with a limit sleeve three (76) at the end. A compression spring four (77) is provided on the outer sleeve of the guide column four, and one end of the compression spring four (77) abuts against the push block (72), and the other end abuts against the side wall of the mounting hole (37). The movable range of the push block (72) is within the vertical projection range of the inclined surface of the inclined top block (71). The inclined top block (71) is located on one side of the stamping mechanism (8), and the push block (72) is located on one side of the pushing assembly (4).

9. The automatic feeding and punching device for sheet metal parts (2) according to claim 8, characterized in that: The two side walls of the mounting hole (37) are also provided with a limiting arc groove (374) with the axis of the rotating shaft (73) as the center of the circle, and both sides of the inclined top block (71) are provided with a limiting shaft (74) inserted into the limiting arc groove (374).

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