Conveying device for conveying automobile sheet metal parts

Abstract

The invention belongs to the field of conveying devices, and discloses a conveying device for conveying automobile sheet metal parts, which is characterized in that a double-conveying-belt type conveyor is directly arranged between an upper die and a lower die of a punching machine, and a plurality of clamping mechanisms are mounted on conveying belts of the double-conveying-belt type conveyor; the metal plate can be directly supported and conveyed between the upper die and the lower die by the lower clamping plate, is clamped by the upper clamping plate at the position between the upper die and the lower die, then can be pressed downwards by the lower die to complete the stamping process, and is directly and continuously conveyed forwards after stamping is finished, the conveying process is coherent and reliable, and the stamping efficiency is improved. And the conveying device is relatively simple in structure and relatively low in production and manufacturing cost, and the later maintenance difficulty and the use cost of the conveying device are reduced.

Description

Technical Field

[0001] The present invention relates to the field of conveying devices, and more particularly to a conveying device for conveying automobile sheet metal parts. Background Art

[0002] For the processing of large-volume automotive sheet metal parts, large punching machines are generally used for one-time stamping and forming, such as car doors and engine hoods. During the stamping process, a transfer and conveying device is needed to place the metal plate between the upper and lower dies of the punching machine, or to remove the stamped metal sheet metal parts on the top of the lower die. The transfer and conveying devices currently in use are mostly based on robotic arms, which are placed on both sides of the punching machine to work together to complete the above-mentioned metal sheet metal transfer work.

[0003] Based on the above findings of the inventors, although the transfer of the above-mentioned metal sheet metal parts can be completed by setting up two robotic arms, since the robotic arms are usually expensive, it is undoubtedly easy to increase the use cost of the transfer conveying device, and the robotic arms are usually more complex in structure and have more precision parts, which is undoubtedly easy to increase the complexity of subsequent maintenance. Therefore, we proposed a conveying device for conveying automobile sheet metal parts to solve the above-mentioned problems. Summary of the Invention

[0004] In response to the problems existing in the prior art, the purpose of the present invention is to provide a conveying device for conveying automobile sheet metal parts, which directly sets a double-belt conveyor between the upper mold and the lower mold of the punch press, and a plurality of clamping mechanisms are installed on the conveyor belt of the double-belt conveyor, so that the metal plate can be directly supported by the lower clamping plate and conveyed to between the upper mold and the lower mold, and is clamped by the upper clamping plate when it is in the position between the upper mold and the lower mold, and then it can be pressed down by the lower mold to complete the stamping process, and is directly conveyed forward after the stamping is completed. The conveying process is continuous and reliable, and the conveying device has a relatively simple structure and low production and manufacturing costs, which reduces the difficulty of later maintenance and the cost of using the conveying device.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A conveying device for conveying automobile sheet metal parts, comprising a double-belt conveyor, wherein the double-belt conveyor is provided with two conveyor belts, and a plurality of clamping mechanisms of the same structure are equidistantly provided on both conveyor belts, and are arranged symmetrically in opposite directions between the corresponding two clamping mechanisms on the two conveyor belts, and extrusion mechanisms of the same structure are provided on both sides of the double-belt conveyor, and are arranged symmetrically in opposite directions between the two extrusion mechanisms, and a punch is also provided on the outside of the double-belt conveyor; The clamping mechanism includes an L-shaped seat plate fixedly mounted on the corresponding conveyor belt by a group of rivets, a lower clamping plate is slidably connected to one side of the L-shaped seat plate, an upper clamping plate is rotatably connected to the top of the lower clamping plate, and a support roller is fixedly mounted on one side of the outer wall of the upper clamping plate through a group of bases; The extrusion mechanism includes an extrusion rod, and the extrusion rod includes a straight section, an ascending section and an outward-turning section. A downward-pressing bracket is fixedly welded on the top of the straight section, and a sliding sleeve is fixedly welded on both ends of one side of the downward-pressing bracket. The two sliding sleeves are slidably connected to the inside of each of the sliding sleeves. The top ends of the two sliding rods are fixedly installed with gaskets and limiting nuts, and the bottom ends of the two sliding rods are fixedly installed with rod seats. The rod seats are fixedly installed at the corresponding bracket positions on the double-belt conveyor by bolts, and a support spring is sleeved on the sliding rod located between the sliding sleeve and the rod seat.

[0007] Furthermore, a group of T-shaped slots are opened on one side of the L-shaped seat plate, and a group of T-shaped connecting ends are fixedly connected to one end of the lower clamping plate at the position of a group of T-shaped slots. The L-shaped seat plate and the lower clamping plate are slidingly connected through a group of T-shaped slots and a group of T-shaped connecting ends. The bottom of the T-shaped slot penetrates the bottom of the L-shaped seat plate, and the top of the T-shaped slot does not penetrate the top of the L-shaped seat plate.

[0008] Furthermore, connecting arms are fixedly connected on both sides of the bottom of the lower clamping plate at the connection between the L-shaped seat plate and the lower clamping plate, and a clamping pile 1 is fixedly installed on the outer side of the bottom of the connecting arm. Clamping pile 2 is fixedly installed on both sides of the L-shaped seat plate, and the corresponding clamping pile 1 and clamping pile 2 are connected by a tension spring.

[0009] Furthermore, ear seats are fixedly connected to both sides of the top of the lower clamping plate at the connection between the L-shaped seat plate and the lower clamping plate, and rotating piles are fixedly connected to both sides of the outer wall of one end of the upper clamping plate. The upper clamping plate and the lower clamping plate are rotatably connected through the two ear seats and the rotating pile, and a reset torsion spring is sleeved on the outside of the rotating pile.

[0010] Furthermore, the upper clamping plate and the lower clamping plate located at the bottom of the extrusion rod are in a closed state, and the top of the upper clamping plate contacts the corresponding bottom of the extrusion rod through the support roller shaft, and the rest of the upper clamping plate and the lower clamping plate are in an open and closed state with an angle of 90 degrees.

[0011] Furthermore, the metal plate is clamped between the plurality of clamping mechanisms located at the bottom of the two extrusion rods through the upper clamping plate and the lower clamping plate.

[0012] Furthermore, the punch press is provided with an upper die table and a lower die table, and the upper die and the lower die are fixedly installed on the bottom of the upper die table and the top of the lower die table respectively, and the upper die and the lower die are respectively located at the top and bottom of the metal plate, and the outer edges on both sides of the upper die and the lower die do not contact the two lower pressure brackets, and a group of contact columns are fixedly welded on the lower pressure bracket, and the top of the contact column is in contact with the bottom of the upper die table.

[0013] Beneficial effects: Compared with the prior art, the advantages of the present invention are: (1) This solution sets a double-belt conveyor directly between the upper and lower dies of the punch press, and multiple clamping mechanisms are installed on the conveyor belt of the double-belt conveyor, so that the metal plate can be directly supported by the lower clamping plate and conveyed to the space between the upper and lower dies, and clamped by the upper clamping plate when it is between the upper and lower dies, and then pressed down by the lower die to complete the stamping process, and directly conveyed forward after the stamping is completed. The conveying process is coherent and reliable, and the structure of the conveying device is relatively simple and the manufacturing cost is low, which reduces the difficulty of later maintenance and the cost of using the conveying device; (2) In this solution, when the clamping mechanism moves to the position of the extrusion rod of the extrusion mechanism, the upper clamping plate of the clamping mechanism in the open and closed state can be gradually squeezed into a closed state by the influence of the structure formed by the straight section, the rising section and the outward-turning section of the extrusion rod, and through the cooperation of the supporting roller shaft, so as to achieve the effect of tightly clamping the metal plate. The clamping structure is a purely mechanical structure, avoiding the various inconveniences caused by the circuit design, layout, connection, etc. of the electric control clamping form; (3) This solution sets the lower clamping plate of the clamping mechanism into a sliding and floating connection form, so that the upper clamping plate and the lower clamping plate of the clamping mechanism can float up and down with the lower mold during stamping, avoiding the impact during stamping or causing the metal plate clamping part to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the installation and use of the present invention.

[0015] Figure 2 It is a schematic diagram of the metal plate clamping and conveying of the present invention.

[0016] Figure 3 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 4 It is a schematic diagram of the separation of the extrusion mechanism of the present invention.

[0018] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0019] Figure 6 Schematic diagram of the clamping mechanism of the present invention Figure 1 .

[0020] Figure 7 This is a schematic diagram of the disassembly of the clamping mechanism of the present invention.

[0021] Figure 8 Schematic diagram of the clamping mechanism of the present invention Figure 2 .

[0022] Figure 9 Schematic diagram of the extrusion mechanism of the present invention.

[0023] Description of the numbers in the figure: 1. Double conveyor belt conveyor; 101. Conveyor belt; 2. Clamping mechanism; 6. L-shaped seat plate; 601. T-shaped slide; 7. Lower clamping plate; 701. Connecting arm; 702. Tension spring; 703. Ear seat; 704. Return torsion spring; 8. Upper clamping plate; 801. Rotating pile; 9. Support roller; 3. Extrusion mechanism; 10. Extrusion rod; 1001. Straight section; 1002. Rising section; 1003. Outward-turning section; 11. Pressing bracket; 1101. Contact column; 12. Sliding sleeve; 13. Sliding rod; 14. Limiting nut; 15. Rod seat; 16. Support spring; 4. Punch press; 401. Upper die table; 402. Upper die; 5. Metal plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the specification of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figures 1-9 A conveying device for conveying automobile sheet metal parts includes a double-belt conveyor 1, wherein the double-belt conveyor 1 is provided with two conveyor belts 101, and a plurality of clamping mechanisms 2 with the same structure are equidistantly provided on each of the two conveyor belts 101, and the corresponding two clamping mechanisms 2 on the two conveyor belts 101 are arranged in an anti-symmetrical manner. Extrusion mechanisms 3 with the same structure are provided on both sides of the double-belt conveyor 1, and the two extrusion mechanisms 3 are arranged in an anti-symmetrical manner. A punch 4 is also provided on the outside of the double-belt conveyor 1; The clamping mechanism 2 includes an L-shaped base plate 6 fixedly mounted on the corresponding conveyor belt 101 by a set of rivets. A lower clamping plate 7 is slidably connected to one side of the L-shaped base plate 6. An upper clamping plate 8 is rotatably connected to the top of the lower clamping plate 7. A support roller 9 is fixedly mounted on one side of the outer wall of the upper clamping plate 8 through a set of bases. The extrusion mechanism 3 includes an extrusion rod 10, and the extrusion rod 10 includes a straight section 1001, an ascending section 1002 and an outward-turning section 1003. A downward-pressing bracket 11 is fixedly welded to the top of the straight section 1001, and a sliding sleeve 12 is fixedly welded to both ends of one side of the downward-pressing bracket 11. Slide rods 13 are slidably connected inside the two sliding sleeves 12. Washers and limit nuts 14 are fixedly installed on the top ends of the two slide rods 13. Rod seats 15 are fixedly installed on the bottom ends of the two slide rods 13. The rod seats 15 are fixedly installed at the corresponding bracket positions on the double-belt conveyor 1 by bolts. A support spring 16 is sleeved on the slide rod 13 located between the sliding sleeve 12 and the rod seat 15. The metal plate 5 is clamped between the plurality of clamping mechanisms 2 located at the bottom of the two extrusion rods 10 via the upper clamping plate 8 and the lower clamping plate 7; An upper die table 401 and a lower die table are provided on the punch press 4. An upper die 402 and a lower die are fixedly installed on the bottom of the upper die table 401 and the top of the lower die table respectively. The upper die 402 and the lower die are located at the top and bottom of the metal plate 5 respectively. The outer edges of both sides of the upper die 402 and the lower die do not contact the two lower pressure brackets 11. A group of contact columns 1101 are fixedly welded on the lower pressure bracket 11, and the top of the contact column 1101 is in contact with the bottom of the upper die table 401.

[0026] (1) The working principle of the conveying device for conveying automobile sheet metal parts is as follows: First, the conveying device is installed between the upper die 402 and the lower die of the punch press 4 (the specific structure of the punch press and the installation of the corresponding dies are known in the art, so a detailed description and detailed drawings are not provided here), and the punching area between the upper die 402 and the lower die is located between the two lower pressing supports 11, so that the metal plate 5 located between the two lower pressing supports 11 can be punched when the upper die 402 and the lower die are closed. During operation, the metal plate 5 is first transported to one end of the double-belt conveyor 1 by the upper-level conveying device, and then one end of the metal plate 5 first overlaps and contacts with the lower clamping plates 7 of the two clamping mechanisms 2 there, forming a state in which one end of the metal plate 5 is lifted up, and then as the two conveyor belts 101 continue to rotate forward, the remaining lower clamping plates 7 will continue to lift the metal plate 5 from the bottom until the metal plate 5 is completely lifted up and transported to the position between the two lower pressing brackets 11. At the same time, in the process of the clamping mechanism 2 following the continuous forward movement of the conveyor belt 101, when the clamping mechanism 2 moves to the position of the extrusion rod 10 of the extrusion mechanism 3, the clamping mechanism 2 in the open and closed state is gradually squeezed into a closed state by the structure formed by the straight section 1001, the rising section 1002 and the outward-turning section 1003 of the extrusion rod 10, thereby achieving the effect of tightly clamping the metal plate 5; Then the punch press 4 can work, prompting the upper die table 401 to drive the upper die 402 to move downward to extrude the metal plate 5, so that the metal plate 5 is punched into the required sheet metal part through the fit of the lower die. Then after the stamping is completed, the upper die table 401 drives the upper die 402 to reset, and then the two conveyor belts 101 can continue to move forward by clamping the sheet metal part through the closed clamping mechanism 2, and when the clamping mechanism 2 moves to the end of the extrusion rod 10, the support roller 9 on the upper clamping plate 8 loses the extrusion of the extrusion rod 10, prompting the upper clamping plate 8 to quickly rebound and reset to an open state. At this time, it can be separated from the clamping of the sheet metal part, so as to facilitate continued forward transportation and be undertaken by the next-level conveying device, and so on and so forth, to achieve the working process of the conveying device for punching the metal plate 5 into a sheet metal part.

[0027] Example 2: In view of the above example 1, further description is given, see Figure 4-Figure 9, a group of T-shaped slots 601 are opened on one side of the L-shaped seat plate 6, and a group of T-shaped connecting ends are fixedly connected to one end of the lower clamping plate 7 at the position of a group of T-shaped slots 601. The L-shaped seat plate 6 and the lower clamping plate 7 are slidably connected through a group of T-shaped slots 601 and a group of T-shaped connecting ends. The bottom of the T-shaped slot 601 penetrates the bottom of the L-shaped seat plate 6, and the top of the T-shaped slot 601 does not penetrate the top of the L-shaped seat plate 6. Both sides of the bottom of the lower clamping plate 7 at the connection between the L-shaped seat plate 6 and the lower clamping plate 7 are fixedly connected with connecting arms 701. A card pile 1 is fixedly installed on the outer side of the bottom of the connecting arm 701, and card piles 2 are fixedly installed on both sides of the L-shaped seat plate 6, corresponding to the card piles 1 and The two clamping piles are connected by a tension spring 702. Ear seats 703 are fixedly connected to both sides of the top of the lower clamping plate 7 at the connection between the L-shaped seat plate 6 and the lower clamping plate 7. Rotating piles 801 are fixedly connected on both sides of the outer wall of one end of the upper clamping plate 8. The upper clamping plate 8 and the lower clamping plate 7 are rotatably connected through two ear seats 703 and the rotating pile 801, and a reset torsion spring 704 is sleeved on the outside of the rotating pile 801. The upper clamping plate 8 and the lower clamping plate 7 at the bottom of the extrusion rod 10 are in a closed state, and the top of the upper clamping plate 8 contacts the bottom of the corresponding extrusion rod 10 through the support roller 9. The rest of the upper clamping plate 8 and the lower clamping plate 7 are all in an open and closed state at a 90-degree angle.

[0028] (2) The principle of the clamping part of the clamping mechanism sinking and avoiding during the stamping process is: According to the stamping structure and principle of existing stamping equipment, the lower die is generally mounted on the lower die table in a floating manner to reduce the impact force when the lower die is pressed down. Therefore, when the upper die 402 and the lower die clamp the metal plate 5 and press downward, since the L-shaped seat plate 6 and the lower clamping plate 7 are slidably connected via a set of T-shaped slots 601 and a set of T-shaped connecting ends, the lower clamping plate 7 can simultaneously move downward to follow the downward movement, so that the clamping part of the clamping mechanism 2 can float with the downward pressure of the lower die, thereby preventing the clamping part from falling off. At the same time, when the clamping mechanism 2 moves downward, the bottom of the upper mold platform 401 tightly squeezes the lower pressing bracket 11 through the contact column 1101, forcing the extrusion rod 10 at the bottom of the lower pressing bracket 11 to tightly squeeze the support roller 9 of the corresponding clamping mechanism 2, preventing the top of the upper clamping plate 8 from becoming open due to lack of extrusion force.

[0029] The bottom of the lower clamping plate 7 is fixedly connected to a connecting arm 701 on both sides of the connection between the L-shaped seat plate 6 and the lower clamping plate 7. A clamping pile 1 is fixedly installed on the outer side of the bottom of the connecting arm 701. A clamping pile 2 is fixedly installed on both sides of the L-shaped seat plate 6. The corresponding clamping pile 1 and the clamping pile 2 are connected by a tension spring 702, which can achieve the effect of the tension spring 702 pulling the lower clamping plate 7 in real time, so that the tension spring 702 can drive the lower clamping plate 7 to reset after the stamping is completed. The upper and lower clamping plates 7 are connected by ear seats 703 at the connection between the L-shaped seat plate 6 and the lower clamping plate 7, and the upper and lower clamping plates 8 are fixedly connected by ear seats 703 on both sides of the outer wall at one end of the upper clamping plate 8. The upper and lower clamping plates 8 are rotatably connected by the two ear seats 703 and the rotating pile 801, and a reset torsion spring 704 is sleeved on the outer side of the rotating pile 801, so that the upper clamping plate 8 can be rotated to open and close at the top of the lower clamping plate 7. The two ends of the reset torsion spring 704 are respectively clamped on the ear seats 703 and the side walls of the upper clamping plate 8, providing driving force for the opening and resetting of the upper clamping plate 8.

[0030] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A conveying device for conveying automobile sheet metal parts, comprising a double-belt conveyor (1), characterized in that: The double-belt conveyor (1) is provided with two conveyor belts (101), and a plurality of clamping mechanisms (2) with the same structure are equidistantly arranged on the two conveyor belts (101), and are arranged symmetrically in the opposite direction between the two clamping mechanisms (2) on the two conveyor belts (101). Extrusion mechanisms (3) with the same structure are arranged on both sides of the double-belt conveyor (1), and are arranged symmetrically in the opposite direction between the two extrusion mechanisms (3). A punching machine (4) is also arranged on the outside of the double-belt conveyor (1); The clamping mechanism (2) comprises an L-shaped seat plate (6) fixedly mounted on the corresponding conveyor belt (101) via a group of rivets, a lower clamping plate (7) being slidably connected to one side of the L-shaped seat plate (6), an upper clamping plate (8) being rotatably connected to the top of the lower clamping plate (7), and a support roller (9) being fixedly mounted on one side of the outer wall of the upper clamping plate (8) via a group of bases; The extrusion mechanism (3) comprises an extrusion rod (10), and the extrusion rod (10) comprises a straight section (1001), an ascending section (1002) and an outward-turning section (1003); a downward-pressing bracket (11) is fixedly welded to the top of the straight section (1001), and a sliding sleeve (12) is fixedly welded to the two ends of one side of the downward-pressing bracket (11); a sliding rod (13) is slidably connected inside the two sliding sleeves (12); a gasket and a limit nut (14) are fixedly installed at the top ends of the two sliding rods (13); a rod seat (15) is fixedly installed at the bottom ends of the two sliding rods (13); the rod seat (15) is fixedly installed at a corresponding bracket position on the double-belt conveyor (1) by bolts; and a support spring (16) is sleeved on the sliding rod (13) located between the sliding sleeve (12) and the rod seat (15).

2. A conveying device for conveying automobile sheet metal parts according to claim 1, characterized in that: A group of T-shaped grooves (601) are provided on one side of the L-shaped seat plate (6); a group of T-shaped connecting ends are fixedly connected to one end of the lower clamping plate (7) at the position of the group of T-shaped grooves (601); the L-shaped seat plate (6) and the lower clamping plate (7) are slidably connected via the group of T-shaped grooves (601) and the group of T-shaped connecting ends; the bottom of the T-shaped groove (601) penetrates the bottom of the L-shaped seat plate (6); and the top of the T-shaped groove (601) does not penetrate the top of the L-shaped seat plate (6).

3. The conveying device for conveying automobile sheet metal parts according to claim 1, characterized in that: Connecting arms (701) are fixedly connected to both sides of the bottom of the lower clamping plate (7) at the connection between the L-shaped seat plate (6) and the lower clamping plate (7), a first clamping pile is fixedly installed on the outer side of the bottom of the connecting arm (701), and a second clamping pile is fixedly installed on both sides of the L-shaped seat plate (6), and the first clamping pile and the second clamping pile are connected via a tension spring (702).

4. The conveying device for conveying automobile sheet metal parts according to claim 1, characterized in that: Ear seats (703) are fixedly connected to both sides of the top of the lower clamping plate (7) at the connection between the L-shaped seat plate (6) and the lower clamping plate (7), and rotating piles (801) are fixedly connected to both sides of the outer wall of one end of the upper clamping plate (8). The upper clamping plate (8) and the lower clamping plate (7) are rotatably connected via the two ear seats (703) and the rotating pile (801), and a return torsion spring (704) is sleeved on the outer side of the rotating pile (801).

5. The conveying device for conveying automobile sheet metal parts according to claim 1, characterized in that: The upper clamping plate (8) and the lower clamping plate (7) located at the bottom of the extrusion rod (10) are in a closed state, and the top of the upper clamping plate (8) contacts the bottom of the corresponding extrusion rod (10) through the supporting roller (9), and the rest of the upper clamping plate (8) and the lower clamping plate (7) are in an open and closed state with an angle of 90 degrees.

6. The conveying device for conveying automobile sheet metal parts according to claim 1, characterized in that: The metal plate (5) is clamped between the plurality of clamping mechanisms (2) located at the bottom of the two extrusion rods (10) via the upper clamping plate (8) and the lower clamping plate (7).

7. The conveying device for conveying automobile sheet metal parts according to claim 6, characterized in that: The punch press (4) is provided with an upper die table (401) and a lower die table, and an upper die (402) and a lower die are fixedly installed at the bottom of the upper die table (401) and the top of the lower die table, respectively, and the upper die (402) and the lower die are respectively located at the top and the bottom of the metal plate (5), and the outer edges of both sides of the upper die (402) and the lower die are not in contact with the two lower pressing brackets (11), and a group of contact columns (1101) are fixedly welded on the lower pressing bracket (11), and the top of the contact columns (1101) is in contact with the bottom of the upper die table (401).

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