Automatic feeding device for automobile bumper processing

Abstract

The application relates to the technical field of automobile bumper processing, and discloses an automatic feeding device for automobile bumper processing, which comprises a bottom column and a processing station in synchronous motion with a conveying line, a first lifting column is slidably arranged on the bottom column, a second lifting column is slidably arranged on the first lifting column, and a bracket for placing an automobile bumper is arranged on the bottom column, the first lifting column and the second lifting column; one side of the conveying line is fixed with an air cylinder capable of stretching and retracting, the surface of the second lifting column is fixed with a cross rod for abutting against the air cylinder, and the bottom end of the air cylinder is communicatively provided with an inflating interface for inflating. According to the technical scheme, one group of air cylinders can be used to adjust the heights of multiple groups of bottom columns, first lifting columns and second lifting columns, a lifting mechanism is not needed to be designed in each group of bottom columns, first lifting columns and second lifting columns to realize multi-stage stretching and retracting, and therefore the number of lifting mechanisms is reduced.

Description

Technical Field

[0001] This invention relates to the field of automotive bumper processing technology, specifically to an automatic feeding device for automotive bumper processing. Background Technology

[0002] Car bumpers not only serve a decorative function, but more importantly, they absorb and mitigate external impacts, acting as a safety device to protect the car body and its occupants. Before processing, such as painting, car bumpers need to be placed in three layers on a positioning bracket, typically upper, middle, and lower. After placement, they are automatically transported to the processing position via a conveyor line for processing.

[0003] When loading car bumpers, they need to be placed on brackets of different heights. It's generally easier to place them at lower levels, but placing them at higher levels requires lifting them onto the corresponding brackets, which is difficult. To facilitate loading, a telescopic support structure is typically used, allowing for multi-stage telescopic movement. This allows the bumper to be lifted from a lower position and then moved to a higher one. However, existing telescopic support structures rely on a lifting mechanism to drive the movement and achieve multi-stage telescopic movement. This lifting mechanism includes large electrical components such as electric cylinders or motors. Therefore, when used on a car bumper painting production line, each telescopic support structure needs to be paired with a lifting mechanism to allow for height adjustment, resulting in a large number of lifting mechanisms and increased costs. Summary of the Invention

[0004] This invention provides an automatic feeding device for processing automobile bumpers. When multiple sets of base columns, first lifting columns, and second lifting columns move to the air cylinder position along the conveyor line, the height of multiple sets of base columns, first lifting columns, and second lifting columns can be adjusted using only one air cylinder. This solves the problem mentioned in the background art that in order to enable each set of retractable support structures to be raised and lowered, each set of retractable support structures needs to be used with a lifting mechanism, resulting in a large number of lifting mechanisms and increased economic costs.

[0005] The present invention provides the following technical solution: an automatic feeding device for processing automobile bumpers, comprising a base column that moves synchronously with the conveyor line and a processing station, wherein a first lifting column is slidably disposed on the base column, a second lifting column is slidably disposed on the first lifting column, and a bracket for placing automobile bumpers is provided on the base column, the first lifting column and the second lifting column.

[0006] A telescopic air cylinder is fixed to one side of the conveyor line, and a crossbar for contacting the air cylinder is fixed to the surface of the second lifting column. An inflation port for inflation is connected to the bottom end of the air cylinder.

[0007] Both the base column and the first lifting column have lifting grooves inside. The bottom of the first lifting column and the second lifting column are fixed with lifting seats. The surface of the lifting seat is rotatably provided with rollers, and the side wall of the lifting groove is provided with positioning grooves. The lifting seat rises along the lifting groove to insert the rollers into the positioning grooves.

[0008] As an optional embodiment of the automatic feeding device for processing automobile bumpers according to the present invention, the lifting seat has an internal storage groove for storing the roller, a sliding plate is elastically arranged in the storage groove, a side plate is fixed on the sliding plate, a rotating shaft is rotatably arranged on the side plate, and the roller is fixed on the circumference of the rotating shaft.

[0009] As an optional embodiment of the automatic feeding device for processing automobile bumpers according to the present invention, the lifting seat has an internal movable groove, a transmission plate is elastically arranged in the movable groove, an insertion rod is fixed on the transmission plate, the insertion rod is slidably arranged in the lifting seat, and a slot for the insertion rod to be inserted is provided on the surface of the sliding plate.

[0010] As an optional embodiment of the automatic feeding device for processing automobile bumpers according to the present invention, a pull rod is fixed on the surface of the slide plate, and a reset component is provided inside the lifting seat. The reset component drives the pull rod to move and retract the roller into the receiving slot.

[0011] As an optional embodiment of the automatic feeding device for processing automotive bumpers according to the present invention, the reset assembly includes a top rod slidably disposed inside the lifting seat, the end of the pull rod being slidably connected to the top rod, an abutment rod being fixed to the surface of the top rod, an abutment platform being fixed to the end of the pull rod, the roller being retracted into the receiving groove through the abutment rod and the abutment platform, an electric push rod fixed inside the lifting seat and fixed to the top rod, and a pressure plate being fixed at the bottom of the top rod and abutting against the transmission plate.

[0012] As an optional embodiment of the automatic feeding device for processing automobile bumpers according to the present invention, the end of the abutment rod is provided with a spherical structure, and the surface of the abutment table is provided with an inclined structure.

[0013] As an optional embodiment of the automatic feeding device for processing automobile bumpers according to the present invention, a first spring is fixed between the receiving groove and the sliding plate, and a second spring is fixed between the transmission plate and the inner wall of the movable groove.

[0014] As an optional embodiment of the automatic feeding device for processing automobile bumpers according to the present invention, the surface of the roller is provided with several sets of grooves, and an airbag is fixed in each of the several sets of grooves. An inflation plate is slidably arranged inside the slot. The inflation plate is inserted into the slot through the insert rod to inflate the airbag, causing the airbag to expand.

[0015] As an optional embodiment of the automatic feeding device for processing automobile bumpers according to the present invention, the slide plate has an air chamber inside, a piston plate is elastically arranged inside the air chamber, a connecting rod is fixed between the piston plate and the inflation plate, the side plate has an air guide groove inside that communicates with the air chamber, and the rotating shaft has an air supply channel inside that communicates with the airbag, and the air supply channel is connected to the air guide groove.

[0016] The present invention has the following beneficial effects:

[0017] 1. This automatic feeding device for processing car bumpers features a telescopic design for the second and first lifting columns. When feeding car bumpers, the bumpers only need to be fed at a lower position. The second and first lifting columns then rise to lift the bumpers to a higher position, reducing the difficulty of the work. Simultaneously, during the lifting of the second and first lifting columns, rollers are installed and roll along the inner wall of the lifting groove, reducing friction between the lifting seat and the lifting groove, thus reducing wear. Furthermore, the elastic design allows the rollers to automatically spring into the positioning groove when they move, securing them and facilitating the fixing of the lifting seat. This also makes it easier to fix the lifting height of the second and first lifting columns.

[0018] In addition, when multiple sets of base columns, first lifting columns, and second lifting columns move to the air cylinder position along the conveyor line, a single air cylinder can be used to adjust the height of multiple sets of base columns, first lifting columns, and second lifting columns. After the height is adjusted, the position can be automatically locked. Therefore, it is not necessary to design a lifting mechanism inside each set of base columns, first lifting columns, and second lifting columns to achieve multi-stage extension and retraction, thereby reducing the number of lifting mechanisms required, reducing economic costs, and improving the performance.

[0019] 2. In this automatic feeding device for processing car bumpers, during the process of inserting the roller into the positioning groove, the slide plate slides along the receiving groove, causing the slide plate to abut against the end of the insertion rod. By setting the end of the insertion rod as a bevel structure, the insertion rod can move downward when the slide plate abuts against the insertion rod. When the roller is inserted into the positioning groove, the slot moves to the insertion rod, and the insertion rod can automatically insert into the slot, restricting the slide plate, thereby increasing the stability of the roller being inserted into the positioning groove, reducing the possibility of the roller accidentally detaching from the positioning groove, and increasing safety.

[0020] 3. In the automatic feeding device for processing car bumpers, during the insertion of the insert rod into the slot, the insert rod abuts against the inflation plate, causing the inflation plate to slide inside the slot. The inflation plate drives the piston plate to slide inside the air chamber through the connecting rod, filling the air chamber with gas through the air guide groove and the air delivery channel, causing the air chamber to inflate. The inflated air chamber fills the gap between the roller and the positioning groove, thereby further increasing the stability of the connection between the roller and the positioning groove.

[0021] 4. This automatic feeding device for automotive bumper processing, through its reset component, can first remove the insert rod from the slot during roller reset, releasing the insert rod's restriction on the slide plate and preventing jamming when the slide plate drives the roller to reset. Furthermore, after the insert rod is removed from the slot, the movement of the pull rod can pull the slide plate to reset, thereby pulling the roller to reset, making the roller reset more accurate. This avoids the problem that the roller cannot reset in time without significant external force due to the positioning groove itself having a certain limiting force on the roller. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the first and second lifting columns in this invention.

[0024] Figure 3 This is a cross-sectional view of the first and second lifting columns in this invention.

[0025] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0026] Figure 5 For the present invention Figure 4 Enlarged view of section B in the middle.

[0027] Figure 6 This is a cross-sectional view of the insert rod and slot portion in this invention.

[0028] Figure 7 This is a schematic diagram of the roller section in this invention.

[0029] Figure 8 This is a cross-sectional view of the roller portion in this invention.

[0030] Figure 9 For the present invention Figure 8 Enlarged view of point D in the middle.

[0031] In the diagram: 1. Conveyor line; 2. Base column; 3. Processing station; 4. First lifting column; 5. Second lifting column; 6. Bracket; 7. Lifting groove; 8. Lifting seat; 9. Roller; 10. Positioning groove; 11. Air cylinder; 111. First cylinder; 112. Second cylinder; 113. Third cylinder; 12. Crossbar; 13. Inflation port; 14. Storage groove; 15. Slide plate; 16. Side plate; 17. Rotating shaft; 18. Movable groove; 19. Transmission plate; 20. Insert rod; 21. Slot; 22. Pull rod; 23. Top rod; 24. Abutting rod; 25. Abutting platform; 26. Electric push rod; 27. Pressure plate; 34. Groove; 35. Airbag; 36. Inflatable plate; 37. Air chamber; 38. Piston plate; 39. Connecting rod; 40. Air guide groove; 41. Air supply channel; 42. First spring; 43. Second spring; 44. Third spring; 45. Fourth spring. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1, please refer to Figures 1-9 An automatic feeding device for processing car bumpers includes a base column 2 that moves synchronously with a conveyor line 1 and a processing station 3. A first lifting column 4 is slidably arranged on the base column 2, and a second lifting column 5 is slidably arranged on the first lifting column 4. A bracket 6 for placing car bumpers is provided on the base column 2, the first lifting column 4 and the second lifting column 5.

[0034] A telescopic air cylinder 11 is fixed on one side of the conveyor line 1, and a crossbar 12 for contacting the air cylinder 11 is fixed on the surface of the second lifting column 5. An inflation port 13 for inflation is connected to the bottom end of the air cylinder 11.

[0035] Both the base column 2 and the first lifting column 4 have lifting grooves 7 inside. The bottom of the first lifting column 4 and the second lifting column 5 are fixed with lifting seats 8. Rollers 9 are rotatably arranged on the surface of the lifting seats 8, and positioning grooves 10 are opened on the side wall of the lifting groove 7. The lifting seats 8 rise along the lifting groove 7 and insert the rollers 9 into the positioning grooves 10.

[0036] The lifting seat 8 has a storage slot 14 for storing the roller 9 inside. A slide plate 15 is elastically arranged in the storage slot 14. A side plate 16 is fixed on the slide plate 15. A rotating shaft 17 is rotatably arranged on the side plate 16. The roller 9 is fixed on the circumference of the rotating shaft 17.

[0037] The lifting seat 8 has an internal movable groove 18, a transmission plate 19 is elastically arranged in the movable groove 18, a plug rod 20 is fixed on the transmission plate 19, the plug rod 20 is slidably arranged in the lifting seat 8, and the surface of the sliding plate 15 has a slot 21 for the plug rod 20 to be inserted.

[0038] The air pump 11 includes a first cylinder 111, a second cylinder 112 and a third cylinder 113, wherein the third cylinder 113 is slidably connected to the second cylinder 112, and the second cylinder 112 is slidably connected to the first cylinder 111.

[0039] A first spring 42 is fixed between the storage slot 14 and the slide plate 15, and a second spring 43 is fixed between the transmission plate 19 and the inner wall of the movable slot 18.

[0040] In this technical solution, the processing station 3 can be a spraying station for spraying the car bumper. The bracket 6 is only required to place and fix the car bumper and is not limited to the structure in this application. Both the processing station 3 and the bracket 6 are existing technologies and are not the innovations of this application, so they will not be described in detail.

[0041] Traditionally, when loading car bumpers, they need to be placed on brackets 6 at different heights. Placing them at lower heights is generally more convenient, but placing them at higher heights requires lifting them onto the corresponding brackets 6, increasing the loading difficulty. Therefore, in this new method, a car bumper is first placed on the bracket 6 of the second lifting column 5. Then, an inflation head is inserted through the inflation interface 13, matching the interface. The inflation head is connected to an air supply device, inflating the air cylinder 11. After inflation, the third cylinder 113 moves upward, contacting the crossbar 12 and causing it to move upward. The crossbar 12 then moves the second lifting column 5 upward, lifting the car bumper placed on the bracket 6 on one side of the second lifting column 5. After lifting, the second lifting column 5 is fixed to the first lifting column 4. Then, another set of car bumpers is placed on the bracket 6 on one side of the first lifting column 4. The third cylinder 113 continues to move upward. At this time, the second lifting column 5 drives the first lifting column 4 to move upward, lifting the car bumpers placed on the bracket 6 on one side of the first lifting column 4. After the first lifting column 4 rises to the highest position, the first lifting column 4 is fixed to the base column 2, the inflation head is disconnected from the inflation interface 13, the air cylinder 11 is vented and reset, and finally the third set of car bumpers is placed on the bracket 6 on one side of the base column 2, completing the loading process of the car bumpers. The conveyor line 1 is started, and the fixed car bumpers are moved by the conveyor line 1, automatically sending the car bumpers into the processing station 3 for processing. Through the above operation, when loading car bumpers, it is only necessary to load them at a low position. By raising the first lifting column 4 and the second lifting column 5, the car bumpers can be lifted to the corresponding height, reducing the difficulty of loading.

[0042] Through the above process, as multiple sets of base columns 2, first lifting columns 4, and second lifting columns 5 move along the conveyor line 1, when one set of base columns 2, first lifting columns 4, and second lifting columns 5 reaches the position of the air cylinder 11, the conveyor line 1 stops. The extension and retraction of the air cylinder 11 allows for adjustment of the extension and retraction of the base columns 2, first lifting columns 4, and second lifting columns 5, completing the loading process. After loading, this set of base columns 2, first lifting columns 4, and second lifting columns 5 drives the car bumper into the processing station 3 for spraying. After spraying, this set of base columns 2, first lifting columns 4, and second lifting columns 5 moves from the processing station 3... Workstation 3 moves out, conveyor line 1 stops, and the painted car bumper is unloaded. At the same time, another set of base columns 2, first lifting columns 4 and second lifting columns 5 move to air cylinder 11 along with conveyor line 1. The above operation is repeated. By extending and retracting a set of air cylinder 11, the height of multiple sets of base columns 2, first lifting columns 4 and second lifting columns 5 on conveyor line 1 can be adjusted. Therefore, it is not necessary to design a lifting mechanism inside each set of base columns 2, first lifting columns 4 and second lifting columns 5 to achieve multi-stage extension and retraction, thereby reducing the number of lifting mechanisms required, reducing economic costs, and improving the performance.

[0043] The principle of fixing the second lifting column 5 to the first lifting column 4 and fixing the first lifting column 4 to the base column 2 is the same. The following explanation uses the fixing method between the second lifting column 5 and the first lifting column 4 as an example: In the traditional lifting process, in order to increase the stability of the lifting seat 8 sliding inside the lifting groove 7, it is necessary to make the surface of the lifting seat 8 and the lifting groove 7 in contact. This results in sliding friction and wear when the lifting seat 8 slides along the lifting groove 7. Therefore, by setting a roller 9 on the outside of the lifting seat 8, when the lifting seat 8 slides upward along the lifting groove 7, the roller 9 contacts the inner wall of the lifting groove 7. The rotation of the roller 9 reduces the friction between the lifting seat 8 and the lifting groove 7, thereby reducing wear. When the lifting seat 8 slides upward to the top of the lifting groove 7, the first spring 42 releases the elastic force, pushing the slide plate 15 to slide inside the storage groove 14, extending the roller 9 outward from inside the storage groove 14 and inserting it into the positioning groove 10. The positioning groove 10 limits the roller 9, thereby fixing the second lifting column 5 and the first lifting column 4.

[0044] Because of the elastic connection between the roller 9 and the receiving groove 14, when the force is small, the positioning groove 10 can limit the roller 9, preventing the lifting seat 8 from sliding downward inside the lifting groove 7. However, when the external force is large, the roller 9 and the receiving groove 14 are squeezed, causing the first spring 42 to contract, which may cause the roller 9 to retract into the receiving groove 14, resulting in the lifting seat 8 descending. Therefore, when the roller 9 is inserted into the positioning groove 10, if... Figure 5As shown, the slide plate 15 moves to the left inside the storage slot 14. The end of the insertion rod 20 is set with a bevel structure. When the slide plate 15 slides to the insertion rod 20, the slide plate 15 abuts against the insertion rod 20, causing the insertion rod 20 to move downward. The insertion rod 20 drives the transmission plate 19 to move downward. The transmission plate 19 moves downward and compresses the second spring 43, causing the second spring 43 to store force. The slide plate 15 continues to move to the left until the roller 9 is fully inserted into the positioning slot 10. At this time, the insertion rod 20 slides to the slot 21, the second spring 43 releases force, causing the insertion rod 20 to move upward and insert the insertion rod 20 into the slot 21. Through the engagement of the slot 21 and the insertion rod 20, the position of the slide plate 15 can be kept stable, so that the roller 9 can be stably inserted into the positioning slot 10. This helps to improve the structural stability and prevents the roller 9 from accidentally falling out of the positioning slot 10, causing the lifting seat 8 to slide downward.

[0045] In this technical solution, a third spring 44 is provided between the first lifting column 4 and the bottom column 2, so that when the air cylinder 11 drives the second lifting column 5 to move upward, it will not simultaneously drive the first lifting column 4 to move upward. Only after the second lifting column 5 is fixed to the first lifting column 4 will it drive the first lifting column 4 to move upward, making the sequence of movement of the first lifting column 4 and the second lifting column 5 more precise.

[0046] In Example 2, to facilitate the insertion of the roller 9 into the positioning groove 10, the positioning groove 10 is generally designed to be slightly larger than the roller 9. However, this design results in an unstable engagement between the roller 9 and the positioning groove 10, creating gaps and making it prone to wobbling. To address this issue, this example is an improvement upon Example 1. For details, please refer to [link / reference]. Figures 1-9 The surface of the roller 9 is provided with several sets of grooves 34, and an airbag 35 is fixed in each set of grooves 34. An inflation plate 36 is slidably arranged inside the slot 21. The inflation plate 36 is inserted into the slot 21 through the insertion rod 20 to inflate the airbag 35, causing the airbag 35 to expand.

[0047] The inside of the slide plate 15 is provided with an air chamber 37, and a piston plate 38 is elastically arranged inside the air chamber 37. A connecting rod 39 is fixed between the piston plate 38 and the inflation plate 36. The inside of the side plate 16 is provided with an air guide groove 40 that communicates with the air chamber 37. The inside of the rotating shaft 17 is provided with an air supply channel 41 that communicates with the airbag 35. The air supply channel 41 is connected to the air guide groove 40.

[0048] In this technical solution, after the roller 9 is inserted into the positioning groove 10, when the insertion rod 20 is inserted into the slot 21, as follows: Figure 9As shown, the insertion rod 20 drives the inflation plate 36 to move upward. The inflation plate 36 drives the piston plate 38 to move upward through the connecting rod 39. A fourth spring 45 is fixed between the piston plate 38 and the inner wall of the air chamber 37. The piston plate 38 moves upward to compress the fourth spring 45, so that the fourth spring 45 stores force. The piston plate 38 moves upward to fill the air chamber 37 with gas through the air guide groove 40 and the air delivery channel 41, so that the air chamber 35 expands. After the air chamber 35 expands, it extends out from the groove 34. The expanded air chamber 35 fills the gap between the roller 9 and the positioning groove 10, thereby further increasing the stability between the roller 9 and the positioning groove 10.

[0049] In this technical solution, when the airbag 35 is compressed by a small force, the second spring 43 will not be compressed, so that the gas inside the airbag 35 cannot be forced back into the air chamber 37. This allows the airbag 35 to fill the gap between the roller 9 and the positioning groove 10, increasing the stability between the roller 9 and the positioning groove 10. When the airbag 35 is compressed by a large force, this large force can compress the second spring 43. At this time, in order to prevent the airbag 35 from bursting, the gas inside the airbag 35 is forced back into the air chamber 37, causing the inflation plate 36 to move downward and abut against the insert rod 20, thus compressing the second spring 43. However, the gas inside the airbag 35 cannot be completely forced back. When the airbag 35 contracts to be flush with the groove 34, the airbag 35 will not be compressed further. At this time, the roller 9 provides support and force. At this time, the insert rod 20 will not completely move out of the slot 21, so that the insert rod 20 can still restrict the slide plate 15.

[0050] In Example 3, when the roller 9 wants to return to the storage slot 14, the insertion rod 20 restricts the slide plate 15, preventing the roller 9 from returning to its original position. To allow the roller 9 to return to the storage slot 14 again, the insertion rod 20 needs to be removed from the slot 21. However, after the insertion rod 20 is removed from the slot 21, the positioning slot 10 itself also exerts a certain restrictive force on the roller 9. Without a significant external force, the roller 9 cannot return to its original position in time. To address this problem, this example is an improvement based on Example 2. For details, please refer to Example 2. Figures 1-9 A pull rod 22 is fixed to the surface of the skateboard 15, and a reset component is provided inside the lifting seat 8. The reset component moves the pull rod 22 to retract the roller 9 into the storage slot 14.

[0051] The reset assembly includes a top rod 23 slidably disposed inside the lifting seat 8, the end of the pull rod 22 being slidably connected to the top rod 23, an abutment rod 24 fixed on the surface of the top rod 23, an abutment platform 25 fixed on the end of the pull rod 22, and the roller 9 being retracted into the storage groove 14 through the abutment rod 24 and the abutment platform 25. An electric push rod 26 fixed to the top rod 23 is fixed inside the lifting seat 8, and a pressure plate 27 abutting against the transmission plate 19 is fixed at the bottom of the top rod 23.

[0052] The end of the abutment rod 24 is provided with a spherical structure, and the surface of the abutment platform 25 is provided with a slope structure;

[0053] In this technical solution, such as Figure 4 and Figure 5 As shown, when the roller 9 is inserted into the positioning slot 10, the slide plate 15 drives the pull rod 22 to move to the left, and the pull rod 22 drives the abutment 25 to slide to the left. When the second lifting column 5 and the first lifting column 4 need to be lowered and reset, the electric push rod 26 first pushes the top rod 23 to move downward. The top rod 23 will drive the pressure plate 27 to move downward. The pressure plate 27 will drive the transmission plate 19 to move downward, compressing the second spring 43. The transmission plate 19 will drive the insertion rod 20 to move downward, first removing the insertion rod 20 from the slot 21, releasing the restriction on the slide plate 15. At the same time as the top rod 23 moves downward, it drives the abutment rod 24 to move downward. The abutment rod 24 does not contact the abutment 25 at first. When the insertion rod 20 moves from the slot 21... When the roller 9 is released, the contact rod 24 moves downward to contact the surface of the contact platform 25. Then the push rod 23 continues to move downward, causing the contact rod 24 to contact the contact platform 25, which causes the contact platform 25 to move to the right. The contact platform 25 drives the pull rod 22 to move to the right, compressing the first spring 42 and storing force in the first spring 42, thereby pulling the roller 9 into the receiving groove 14 and resetting the roller 9. Then the lifting seat 8 drives the roller 9 to slide downward along the inner surface of the lifting groove 7, completing the retraction and descent of the second lifting column 5 and the first lifting column 4. Finally, the electric push rod 26 resets, driving the push rod 23 to reset. At the same time, the push rod 23 resets, causing the transmission plate 19 to reset, thereby resetting the insertion rod 20 and the contact rod 24.

[0054] In this technical solution, the first lifting column 4 is lowered and reset first. After the first lifting column 4 is lowered and reset, the second lifting column 5 is lowered and reset. This makes it convenient to remove the car bumper on the bracket 6 on one side of the first lifting column 4 after processing, and then lower and reset the second lifting column 5 to remove the car bumper on the bracket 6 on one side of the second lifting column 5, ensuring the orderly unloading process.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An automatic feeding device for processing automobile bumpers, comprising a base column (2) that moves synchronously with a conveyor line (1) and a processing station (3), characterized in that: A first lifting column (4) is slidably disposed on the bottom column (2), and a second lifting column (5) is slidably disposed on the first lifting column (4). A bracket (6) for placing a car bumper is provided on the bottom column (2), the first lifting column (4) and the second lifting column (5). A telescopic air cylinder (11) is fixed on one side of the conveyor line (1), and a crossbar (12) for contacting the air cylinder (11) is fixed on the surface of the second lifting column (5). An inflation port (13) for inflation is connected to the bottom end of the air cylinder (11). The bottom column (2) and the first lifting column (4) are both provided with lifting grooves (7). The bottom of the first lifting column (4) and the second lifting column (5) are both fixed with lifting seats (8). The surface of the lifting seat (8) is provided with rollers (9). The side wall of the lifting groove (7) is provided with positioning grooves (10). The lifting seat (8) rises along the lifting groove (7) and inserts the rollers (9) into the positioning grooves (10). The lifting seat (8) has a storage slot (14) for storing the roller (9) inside, and a sliding plate (15) is elastically arranged in the storage slot (14); The lifting seat (8) has an internal movable groove (18), and a transmission plate (19) is elastically arranged in the movable groove (18). A plug rod (20) is fixed on the transmission plate (19). The plug rod (20) is slidably arranged in the lifting seat (8). The surface of the sliding plate (15) has a slot (21) for the plug rod (20) to be inserted. A pull rod (22) is fixed to the surface of the skateboard (15), and a reset component is provided inside the lifting seat (8). The reset component moves the pull rod (22) to retract the roller (9) into the storage slot (14). The reset assembly includes a top rod (23) slidably disposed inside the lifting seat (8), an abutment rod (24) fixed on the surface of the top rod (23), an abutment platform (25) fixed at the end of the pull rod (22), the roller (9) abutting against the abutment platform (25) through the abutment rod (24) and retracting into the storage groove (14), an electric push rod (26) fixed inside the lifting seat (8) and fixed to the top rod (23), and a pressure plate (27) abutting against the transmission plate (19) fixed at the bottom of the top rod (23).

2. The automatic feeding device for processing automobile bumpers according to claim 1, characterized in that: The air cylinder (11) includes a first cylinder (111), a second cylinder (112) and a third cylinder (113), wherein the third cylinder (113) is slidably connected to the second cylinder (112), and the second cylinder (112) is slidably connected to the first cylinder (111).

3. The automatic feeding device for processing automobile bumpers according to claim 2, characterized in that: A side plate (16) is fixed on the slide plate (15), and a rotating shaft (17) is rotatably mounted on the side plate (16). The roller (9) is fixed on the circumference of the rotating shaft (17).

4. The automatic feeding device for processing automobile bumpers according to claim 3, characterized in that: The end of the abutment rod (24) is provided with a spherical structure, and the surface of the abutment platform (25) is provided with an inclined structure.

5. The automatic feeding device for processing automobile bumpers according to claim 4, characterized in that: A first spring (42) is fixed between the storage slot (14) and the sliding plate (15), and a second spring (43) is fixed between the transmission plate (19) and the inner wall of the movable slot (18).

6. The automatic feeding device for processing automobile bumpers according to claim 5, characterized in that: The surface of the roller (9) is provided with a number of grooves (34), and an airbag (35) is fixed in each of the grooves (34). An inflation plate (36) is slidably arranged inside the slot (21). The inflation plate (36) is inserted into the slot (21) through the insert rod (20) to inflate the airbag (35) and make the airbag (35) expand.

7. The automatic feeding device for processing automobile bumpers according to claim 6, characterized in that: The slide plate (15) has an air chamber (37) inside, and a piston plate (38) is elastically arranged inside the air chamber (37). A connecting rod (39) is fixed between the piston plate (38) and the inflation plate (36). The side plate (16) has an air guide groove (40) inside that communicates with the air chamber (37). The rotating shaft (17) has an air supply channel (41) inside that communicates with the airbag (35). The air supply channel (41) is connected to the air guide groove (40).

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