Automatic riveting machine and its working method

Abstract

The present invention aims to provide an automatic riveting machine and its working method. The automatic riveting machine includes a support platform, on which a vibrating bowl is provided. Above the support platform, a receiving platform for receiving rivets is fixed. The receiving platform is located at the discharge port of the vibrating bowl. A vertical bracket is fixed on the support platform, and a conveying mechanism for conveying rivets is provided on the vertical bracket. Two pressing devices are fixed on the vertical bracket. The pressing devices are used to install the rivets into the drill holes on the bracket to be riveted. The two pressing devices are respectively located on both sides of the conveying mechanism. Above the support platform, a placement platform for placing the bracket to be riveted is fixed. In the automatic riveting machine of the present invention, by starting the first electric slider, it first moves towards the side close to the second baffle, and then moves towards the side close to the first baffle, and finally makes the cap of the rivet contact the first baffle, so that the rivet can be horizontally placed at a fixed position on the receiving platform.

Description

Technical Field

[0001] The present invention relates to a riveting machine, specifically an automatic riveting machine and its working method. Background Art

[0002] A rivet, also known as a blind rivet or pop rivet, is a type of fastener for single-sided riveting, but a special tool - a riveting gun (manual, electric, pneumatic) must be used for riveting. This type of rivet is particularly suitable for riveting occasions where it is inconvenient to use ordinary rivets (which require riveting from both sides), so it is widely used in products such as construction, automobiles, ships, airplanes, machines, electrical appliances, and furniture.

[0003] Blind rivet riveting can only be carried out by a worker holding a riveting gun, which has low efficiency, high labor intensity, and cannot guarantee consistency. When the rivet is being riveted, the rivet on it needs to be vertically inserted into the gun head of the riveting gun. The traditional method is to manually align the position of the rivet and then install it on the riveting gun. This method has low efficiency. To solve the above problems, an automatic riveting machine and its working method are provided. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic riveting machine and its working method. By starting the first electric slider, it first moves towards the side close to the second baffle, and then moves towards the side close to the first baffle. Finally, the head of the rivet contacts the first baffle, so that the rivet can be horizontally placed at a fixed position on the receiving platform, facilitating subsequent clamping. At the same time, after clamping, it only needs to be rotated 90° along the vertical plane to be turned into a vertical state, which is convenient for subsequent installation on the pressure device.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] An automatic riveting machine, which includes a support platform. A vibrating bowl is provided on the support platform. Above the support platform, a receiving platform for receiving rivets is fixed. The receiving platform is located at the discharge port of the vibrating bowl. A vertical bracket is fixed on the support platform. A conveying mechanism for conveying rivets is provided on the vertical bracket. Two pressure devices are fixed on the vertical bracket. The pressure devices are used to install the rivets in the drill holes on the bracket to be riveted. The two pressure devices are respectively located on both sides of the conveying mechanism. Above the support platform, a placement platform for placing the bracket to be riveted is fixed. The conveying mechanism is used to convey the rivets on the receiving platform to the pressure devices.

[0007] The receiving platform includes a U-shaped fixing groove fixed on the support platform. A first linear slide rail is provided in the groove of the U-shaped fixing groove. A first electric slider is slidably provided in the first linear slide rail. Above the first electric slider, a first support block is fixed. A V-shaped groove is provided on the upper surface of the first support block. A first baffle and a second baffle are fixed in the groove of the U-shaped fixing groove.

[0008] The first baffle and the second baffle are respectively located at two ends of the first linear slide rail. The second baffle is higher than the first baffle. The rivets output from the vibrating disk fall into the V-shaped groove, and the core-pulling rod of the rivet faces the side of the second baffle.

[0009] Furthermore, a pushing device for pushing the bracket to be riveted is provided on the placement platform. Two feeding devices for feeding the bracket to be riveted are provided at one end of the placement platform, and the positions of the two feeding devices correspond to the two pressing devices respectively.

[0010] Two sixth cylinders for upwardly pressing the rivets are provided at the bottom of the support platform. The sixth cylinders correspond to the pressing devices one by one, and through holes corresponding to the sixth cylinders are provided on the support platform.

[0011] Furthermore, the conveying mechanism includes a horizontal first cylinder fixed on a vertical bracket. A first connecting block is fixed on the output shaft of the first cylinder. A vertical second cylinder is fixed on the first connecting block. A second connecting block is fixed at the output end of the second cylinder, and a third motor is fixed above the second connecting block.

[0012] The output shaft of the third motor penetrates through the second connecting block and is fixed with a jaw cylinder. Third motors are fixed on the outer sides of the two jaws of the jaw cylinder. The output shafts of the third motors penetrate through the corresponding jaws and are fixed with first L-shaped clamping arms. When clamping the rivet, the core-pulling rod of the rivet is clamped between the two first L-shaped clamping arms by starting the jaw cylinder.

[0013] Furthermore, the pressing device includes a third cylinder fixed on a vertical bracket. The output shaft of the third cylinder faces downward. A pressing head for pressing the rivet cap is fixed below the output shaft of the third cylinder. A slot for inserting the core-pulling rod is provided below the pressing head, and a clamping member is provided in the slot.

[0014] Furthermore, the clamping member includes two second linear slide rails located at the bottom of the slot. Second electric sliders are slidably arranged in the second linear slide rails. Second L-shaped clamping arms are fixed on the second electric sliders. When the core-pulling rod is inserted into the slot, it is located between the two second L-shaped clamping arms.

[0015] Furthermore, the pressing device further includes a detection box. A feeding hole is provided on one side of the detection box close to the conveying mechanism. Through holes are provided on both the upper side and the lower side of the detection box.

[0016] Further, the pushing device includes a horizontal fourth cylinder fixed on the placement platform. A third connecting block is fixed on the output shaft of the fourth cylinder, and a motor bracket is fixed on the third connecting block. A fourth motor is fixed on the motor bracket. The output shaft of the fourth motor is parallel to the output shaft of the fourth cylinder. A fourth connecting block is fixed on the output shaft of the fourth motor, and a fifth cylinder perpendicular to the output shaft of the fourth motor is fixed on the fourth connecting block. A fifth connecting block is fixed on the output shaft of the fifth cylinder. One end of the fifth connecting block is provided with a mounting groove, and the other end is provided with a containing groove. When the fifth connecting block rotates to be below the pressing device, the mounting groove faces downward.

[0017] Further, a sliding rod is installed in the mounting groove. The diameter of the sliding rod is smaller than the diameter of the drilling hole on the bracket to be riveted. A spring is connected between the sliding rod and the mounting groove. Under the action of the spring, one end of the sliding rod is located outside.

[0018] A recovery box is provided on the side of the third connecting block away from the pressing device. When the fifth connecting block rotates above the recovery box, the containing groove faces downward.

[0019] Further, the feeding device includes a rectangular frame. Seventh cylinders are fixed on both inner walls of the rectangular frame. Horizontal strip-shaped clamping arms are fixed on the output shafts of the seventh cylinders. The longitudinal section of the strip-shaped clamping arms is L-shaped.

[0020] A horizontal third linear slide rail is provided on the strip-shaped clamping arm. A third electric slider slides on the third linear slide rail. A first push plate is fixed on the third electric slider. A feeding hole is provided in the middle of the top plate of the rectangular frame. An eighth cylinder is fixed on the bottom plate of the rectangular frame. A driving box is fixed on the output shaft of the eighth cylinder.

[0021] An eighth motor is fixed in the driving box. The output shaft of the eighth motor penetrates the top plate of the driving box and is vertically fixed with a connecting bar. A strip-shaped support plate is fixed above the connecting bar. A limiting bar parallel to the strip-shaped clamping arm is fixed above the feeding hole. The limiting bar is located in the middle of the feeding hole. Two placing trays are fixed above the rectangular frame. The placing trays are used for containing the brackets to be riveted.

[0022] The placing trays are located on both sides of the feeding hole. A fourth linear slide rail is provided in the placing tray. A fourth electric slider slides in the fourth linear slide rail. A second push plate for pushing the bracket to be riveted toward the feeding hole is fixed above the fourth electric slider.

[0023] The working method of the above automatic riveting machine includes the following steps:

[0024] Step 1: Feeding the bracket to be riveted

[0025] Place the bracket to be riveted on the placement platform through the feeding device.

[0026] Step Two: Drilling the hole

[0027] Push the bracket to be riveted by a pushing device to move it so that one of the drilled holes on it aligns with the blanking device.

[0028] Step Three: Feeding the rivets

[0029] Start the vibrating bowl to discharge a single rivet onto the receiving platform. After the receiving platform receives the rivet, stop the vibrating bowl. The receiving platform can place the rivet at a fixed position, and the conveying mechanism clamps the rivet on the receiving platform and conveys it to the blanking device.

[0030] Step Four: Riveting

[0031] Install the rivet on the blanking device into the drilled hole of the bracket to be riveted. Press the rivet cap downward through the blanking device, press the rivet upward through the sixth cylinder. After the rivet deforms, pull and break the core rod through the blanking device.

[0032] Advantages of the present invention:

[0033] By starting the first electric slider to move it first to the side close to the second baffle, and then to the side close to the first baffle, finally making the cap of the rivet contact the first baffle, so that the rivet can be horizontally placed at a fixed position on the receiving platform, which is convenient for subsequent clamping. At the same time, after clamping, it only needs to be rotated 90° along the vertical plane to be turned into a vertical state, which is convenient for subsequent installation on the blanking device.

[0034] By starting the first motor, the orientation of the first L-shaped clamping arm can be adjusted to face the side of the blanking device for receiving the rivet. The conveying mechanism can alternately convey rivets to two blanking devices, improving its utilization rate.

[0035] When the rivet deforms, pull and break the core rod by retracting the third cylinder. When the pushing device drags the next drilled hole under the press head, start the second electric slider to control the second L-shaped clamping arm to release the core rod inside it, so that it enters the storage tank. Start the fourth motor to control the fifth connecting block to rotate, and pour the core rod inside it into the recycling box for recycling. Therefore, this automatic riveting machine can realize the recycling of waste metal without stopping the machine, ensuring the cleanliness of the placement platform and improving work efficiency.

[0036] By pre-placing several brackets to be riveted in the placement tray, and then automatically conveying them one by one to the placement platform. By using two placement trays, they can discharge materials alternately. During the discharging process of one, the other can be replenished, giving sufficient replenishment time to avoid affecting work efficiency due to untimely replenishment. Description of the Drawings

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] Figure 1 It is a schematic cross-sectional view of a partial structure of the automatic riveting machine of the present invention;

[0039] Figure 2 It is a schematic structural view of the receiving platform of the present invention;

[0040] Figure 3 It is a schematic structural view of the receiving platform of the present invention;

[0041] Figure 4 It is a schematic view of a partial structure of the conveying mechanism of the present invention;

[0042] Figure 5 It is Figure 1 An enlarged structural view of part A in

[0043] Figure 6 It is a schematic view of a partial structure of the material pressing device of the present invention;

[0044] Figure 7 It is a schematic view of a partial structure of the pushing device of the present invention;

[0045] Figure 8 It is a schematic cross-sectional view of a partial structure of the pushing device of the present invention;

[0046] Figure 9 It is a schematic view of the feeding device structure of the present invention;

[0047] Figure 10 It is a schematic view of the feeding device structure of the present invention;

[0048] Figure 11 It is Figure 9 An enlarged structural view of part B in

[0049] In the figure: 1, support platform; 2, receiving platform; 3, vibrating disk; 4, vertical bracket; 5, conveying mechanism; 6, pressing device; 7, placing platform; 8, pushing device; 10, feeding device; 21, U-shaped fixing groove; 22, first linear slide rail; 23, first electric slider; 24, first support block; 25, V-shaped groove; 26, first baffle; 27, second baffle; 51, first cylinder; 52, first connecting block; 53, second cylinder; 54, second connecting block; 55, first motor; 56, jaw cylinder; 57, third motor; 58, first L-shaped clamping arm; 61, third cylinder; 62, pressing head; 63, second linear slide rail; 64, second electric slider; 65, second L-shaped clamping arm; 66, detection box; 81, fourth cylinder; 82, third connecting block; 83, motor bracket; 84, fourth motor; 85, fourth connecting block; 86, fifth cylinder; 87, fifth connecting block; 88, installation groove; 89, sliding rod; 810, spring; 811, containing groove; 812, recycling box; 9, sixth cylinder; 101, rectangular frame; 102, seventh cylinder; 103, long strip-shaped clamping arm; 104, third linear slide rail; 105, third electric slider; 106, first push plate; 107, feeding hole; 108, eighth cylinder; 109, driving box; 1010, eighth motor; 1011, connecting strip; 1012, support plate; 1013, limiting strip; 1014, placing disk; 1015, fourth electric slider; 1016, second push plate. Embodiment

[0050] 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0051] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0052] An automatic riveting machine, the automatic riveting machine includes a support platform 1, as Figure 1As shown in the figure, a vibrating bowl 3 is provided on a support platform 1. Above the support platform 1, a receiving platform 2 for receiving rivets is fixed. The receiving platform 2 is located at the discharge port of the vibrating bowl 3. A vertical bracket 4 is fixed on the support platform 1. A conveying mechanism 5 for conveying rivets is provided on the vertical bracket 4. Two pressing devices 6 are fixed on the vertical bracket 4. The pressing devices 6 are used to install the rivets into the drilled holes on the bracket to be riveted. The two pressing devices 6 are respectively located on both sides of the conveying mechanism 5. Above the support platform 1, a placing platform 7 for placing the bracket to be riveted is fixed. When riveting the bracket to be riveted, it is necessary to move the drilled hole on the riveting bracket below the pressing device 6. The conveying mechanism 5 is used to convey the rivets on the receiving platform 2 to the pressing device 6.

[0053] A pushing device 8 for pushing the bracket to be riveted is provided on the placing platform 7. At one end of the placing platform 7, two feeding devices 10 for feeding the bracket to be riveted are provided. The positions of the two feeding devices 10 correspond to the two pressing devices 6 respectively.

[0054] The receiving platform 2 includes a U-shaped fixing groove 21 fixed on the support platform 1. As Figure 2 , Figure 3 shown, a first linear slide rail 22 is provided in the groove of the U-shaped fixing groove 21. A first electric slider 23 is slidably arranged in the first linear slide rail 22. Above the first electric slider 23, a first support block 24 is fixed. A V-shaped groove 25 is provided on the upper surface of the first support block 24. A first baffle 26 and a second baffle 27 are fixed in the groove of the U-shaped fixing groove 21.

[0055] The first baffle 26 and the second baffle 27 are respectively located at both ends of the first linear slide rail 22. The second baffle 27 is higher than the first baffle 26. The rivets output from the vibrating bowl 3 fall into the V-shaped groove 25. The core pulling rod of the rivet faces the side of the second baffle 27. A position detection sensor is provided in the U-shaped fixing groove 21. When the position detection sensor detects that there is a rivet falling on the receiving platform 2, the vibrating bowl 3 stops working.

[0056] By moving the first electric slider 23 towards the side close to the second baffle 27, if the rivet is erected in the V-shaped groove 25, the rivet will fall to the horizontal position under the action of inertia during the movement of the V-shaped groove 25. When the head of the rivet is located in the V-shaped groove 25, during the movement of the first electric slider 23, when the core pulling rod of the rivet is pushed by the second baffle 27, the head of the rivet is pushed out of the V-shaped groove 25. Then the first electric slider 23 moves towards the side away from the second baffle 27, driving the rivet to move together until the head of the rivet contacts the first baffle 26, so that the rivet can be clamped at a specific position.

[0057] The conveying mechanism 5 includes a horizontal first air cylinder 51. As Figure 4 , Figure 5As shown, the first cylinder 51 is fixed on the vertical bracket 4. A first connecting block 52 is fixed on the output shaft of the first cylinder 51. A vertical second cylinder 53 is fixed on the first connecting block 52. A second connecting block 54 is fixed at the output end of the second cylinder 53. A third motor 57 is fixed above the second connecting block 54.

[0058] The output shaft of the third motor 57 passes through the second connecting block 54 and a jaw cylinder 56 is fixed. Third motors 57 are fixed on the outer sides of the two jaws of the jaw cylinder 56. The output shafts of the third motors 57 pass through the corresponding jaws and first L-shaped clamping arms 58 are fixed. When clamping the pull stud, the core rod of the pull stud is clamped between the two first L-shaped clamping arms 58 by starting the jaw cylinder 56. The rivet on the pull stud can be turned downward by starting the third motor 57. By driving the third motor 57, the orientation of the first L-shaped clamping arm 58 can be controlled so that it can be responsible for the feeding work of the two pressure feeding devices 6.

[0059] The pressure feeding device 6 includes a third cylinder 61 fixed on the vertical bracket 4. As Figure 6 shown, the output shaft of the third cylinder 61 faces downward. A pressure head 62 for pressing the head of the pull stud is fixed below the output shaft of the third cylinder 61. A slot for inserting the core rod is provided below the pressure head 62. A clamping member is provided in the slot. The clamping member includes two second linear slide rails 63. The second linear slide rails 63 are located at the bottom of the slot. Second electric sliders 64 are slidably provided in the second linear slide rails 63. Second L-shaped clamping arms 65 are fixed to the second electric sliders 64. When the core rod is inserted into the slot, it is located between the two second L-shaped clamping arms 65.

[0060] The pressure feeding device 6 further includes a detection box 66. A feeding hole is provided on one side of the detection box 66 close to the conveying mechanism 5. Through holes are provided on the upper side and the lower side of the detection box 66. A position detection sensor for detecting whether the pull stud is in place is provided in the detection box 66.

[0061] The pushing device 8 includes a horizontal fourth cylinder 81. As Figure 7 、 Figure 8 shown, the fourth cylinder 81 is fixed on the placement platform 7. A third connecting block 82 is fixed on the output shaft of the fourth cylinder 81. A motor bracket 83 is fixed on the third connecting block 82. A fourth motor 84 is fixed on the motor bracket 83. The output shaft of the fourth motor 84 is parallel to the output shaft of the fourth cylinder 81. A fourth connecting block 85 is fixed on the output shaft of the fourth motor 84. A fifth cylinder 86 perpendicular to the output shaft of the fourth motor 84 is fixed on the fourth connecting block 85. A fifth connecting block 87 is fixed on the output shaft of the fifth cylinder 86. An installation groove 88 is provided at one end of the fifth connecting block 87, and a containing groove 811 is provided at the other end. When the fifth connecting block 87 rotates to be close to the lower part of the pressure feeding device 6, the installation groove 88 faces downward.

[0062] A sliding rod 89 is installed in the installation groove 88. The diameter of the sliding rod 89 is smaller than the diameter of the drilling hole on the bracket to be riveted. A spring 810 is connected between the sliding rod 89 and the installation groove 88. Under the action of the spring 810, one end of the sliding rod 89 is located outside the device.

[0063] A recycling box 812 is provided on the side of the third connecting block 82 away from the material pressing device 6. When the fifth connecting block 87 rotates above the recycling box 812, the placing groove 811 faces downward.

[0064] The feeding device 10 includes a rectangular frame 101. As Figure 9 , Figure 10 and Figure 11 shown, vertical seventh cylinders 102 are fixed on both inner walls of the rectangular frame 101. A horizontal strip-shaped clamping arm 103 is fixed on the output shaft of the seventh cylinder 102. The longitudinal section of the strip-shaped clamping arm 103 is L-shaped. A horizontal third linear slide rail 104 is provided on the strip-shaped clamping arm 103. A third electric slider 105 slides on the third linear slide rail 104. A first push plate 106 is fixed on the third electric slider 105. A feeding hole 107 is provided in the middle of the top plate of the rectangular frame 101. A vertical eighth cylinder 108 is fixed on the bottom plate of the rectangular frame 101. A driving box 109 is fixed on the output shaft of the eighth cylinder 108. An eighth motor 1010 is fixed in the driving box 109. The output shaft of the eighth motor 1010 penetrates through the top plate of the driving box 109 and is vertically fixed with a connecting bar 1011. A strip-shaped support plate 1012 is fixed above the connecting bar 1011. A limiting bar 1013 parallel to the strip-shaped clamping arm 103 is fixed above the feeding hole 107. The limiting bar 1013 is located at the middle position of the feeding hole 107. Two placing plates 1014 are fixed above the rectangular frame 101. The placing plates 1014 are used for placing the brackets to be riveted. Multiple brackets to be riveted can be placed on the placing plates 1014.

[0065] The placing plates 1014 are located on both sides of the feeding hole 107. A fourth linear slide rail is provided in the placing plate 1014. A fourth electric slider 1015 slides in the fourth linear slide rail. A second push plate 1016 for pushing the bracket to be riveted toward the feeding hole 107 is fixed above the fourth electric slider 1015.

[0066] Two sixth cylinders 9 for upwardly pressing the rivets are provided at the bottom of the support platform 1. The sixth cylinders 9 correspond to the material pressing devices 6 one by one. Through holes corresponding to the sixth cylinders 9 are provided on the support platform 1.

[0067] The working method of the above automatic riveting machine includes the following steps:

[0068] Step 1: Feeding the bracket to be riveted

[0069] Place the bracket to be riveted on the placement platform 7 through the feeding device 10. The specific placement method is as follows:

[0070] Start the eighth motor 1010 to control the connecting bar 1011 to rotate to the discharging end of the corresponding placement disk 1014. Start the eighth cylinder 108 to control the support plate 1012 to insert into the feeding hole 107. Start the fourth electric slider 1015 to push the bracket to be riveted towards the feeding hole 107, so that the bracket to be riveted closest to the feeding hole 107 slides onto the support plate 1012. By setting the limiting bar 1013, the pushing distance of the bracket to be riveted can be limited, so that the bracket to be riveted can be placed as much as possible at the center of the support plate 1012. Retract the eighth cylinder 108 to control the bracket to be riveted to descend between the two long strip-shaped clamping arms 103. Start the eighth motor 1010 to control the bracket to be riveted to rotate until both ends are in contact with the long strip-shaped clamping arms 103 on both sides. Start the seventh cylinder 102 to control the two long strip-shaped clamping arms 103 to move towards each other. When the gap between them is slightly larger than the width of the support plate 1012, retract the eighth cylinder 108 to control the support plate 1012 to descend, and the bracket to be riveted is supported on the long strip-shaped clamping arms 103. Start the seventh cylinder 102 again to control the long strip-shaped clamping arms 103 to regularize the bracket to be riveted so that it is parallel to the long strip-shaped clamping arms 103.

[0071] Push the bracket to be riveted onto the placement platform 7 by starting the fourth electric slider 1015 to realize the feeding of the bracket to be riveted.

[0072] Step Two: Hole Alignment

[0073] Push the bracket to be riveted through the pushing device 8 to move it so that one of the drilled holes on it is aligned with the pressing device 6. The specific hole alignment method is as follows:

[0074] Start the fourth motor 84 to control the fifth connecting block 87 to rotate so that the sliding rod 89 rotates to the vertical and contacts the upper surface of the bracket to be riveted. At this time, the spring 810 is compressed, and the sliding rod 89 extends and retracts into the installation groove 88. Control the sliding rod 89 to move on the upper surface of the bracket to be riveted through the cooperation of the fifth cylinder 86 and the fourth cylinder 81. When the sliding rod 89 slides to the position where the drilled hole is located, the spring 810 elongates, and the sliding rod 89 inserts into the drilled hole. Through the cooperation of the fifth cylinder 86 and the fourth cylinder 81, the sliding rod 89 drags the drilled hole to move under the pressing head 62. When the bracket to be riveted needs to move horizontally, to prevent the bracket to be riveted from skewing, the corresponding seventh cylinder 102 can be extended to push the bracket to be riveted towards the side where the drilled hole moves while the fifth cylinder 86 is extended to drag the drilled hole on the bracket to be riveted. After the drilled hole moves under the pressing head 62, rotate the fifth connecting block 87 upwards to pull out the sliding rod 89 from the drilled hole to complete the hole alignment work.

[0075] Step Three: Rivet Feeding

[0076] Start the vibrating bowl 3 to discharge a single rivet onto the receiving platform 2. After the receiving platform 2 receives the rivet, stop the vibrating bowl 3. The receiving platform 2 can place the rivet in a fixed position. The conveying mechanism 5 grabs the rivet on the receiving platform 2 and conveys it to the material pressing device 6. The specific feeding method is as follows:

[0077] Discharge a single rivet from the vibrating bowl 3 into the V-shaped groove 25. After the in-place detection sensor in the receiving platform 2 detects that the rivet is in place, control the vibrating bowl 3 to stop. Start the first electric slider 23 to move it first to the side close to the second baffle 27, and then to the side close to the first baffle 26. Finally, make the cap of the rivet contact the first baffle 26, so that the rivet can be placed in a fixed position on the receiving platform 2.

[0078] Start the third motor 57 to control the first L-shaped clamping arm 58 to rotate to the vertical. Start the first motor 55 to control the clamping jaw cylinder 56 to move above the receiving platform 2. Extend the second cylinder 53 so that the core-pulling rod on the rivet is located between the two first L-shaped clamping arms 58. Start the clamping jaw cylinder 56 to control the two first L-shaped clamping arms 58 to move towards each other to clamp the core-pulling rod on the rivet. Contract the second cylinder 53 to lift the rivet. Then start the first motor 55 to drive the first L-shaped clamping arm 58 to rotate until the rivet on the rivet is facing downwards. At this time, the first L-shaped clamping arm 58 is rotated to the horizontal, and at this time the rivet is aligned with the feeding port on the detection box 66. Start the first motor 55 to adjust the orientation of the first L-shaped clamping arm 58 so that it faces the material pressing device 6 waiting to receive the rivet. Start the first cylinder 51 to send the rivet into the corresponding detection box 66. After the in-place detection sensor in the detection box 66 detects that the rivet is in place, extend the third cylinder 61 to control the pressure head 62 to descend, so that the core-pulling rod on the rivet is inserted into the slot on the pressure head 62. Start the two second electric sliders 64 to move towards each other to clamp the core-pulling rod in the slot, realizing the feeding work of the rivet. After the feeding is completed, start the clamping jaw cylinder 56 to control the two first L-shaped clamping arms 58 to move in the reverse direction to loosen the rivet. After the loosening is completed, start the first cylinder 51 to control the first L-shaped clamping arm 58 to withdraw from the detection box 66 and wait to be started when feeding next time. The conveying mechanism 5 can alternately convey rivets to the two material pressing devices 6, improving its utilization rate.

[0079] Step Four: Riveting

[0080] Install the rivet on the material pressing device 6 into the drilled hole of the bracket to be riveted. Press the cap of the rivet downward through the material pressing device 6, press the rivet upward through the sixth cylinder 9. After the rivet is deformed, pull off the core-pulling rod through the material pressing device. The specific riveting method is as follows:

[0081] The third cylinder 61 is activated to control the downward movement of the indenter 62, so that the rivet of the rivet is inserted into the drilled hole. The second electric slider 64 is activated to control the second L-shaped clamping arm 65 to release the core pulling rod. The indenter 62 is continuously controlled to descend to press the cap of the rivet. At the same time, the sixth cylinder 9 is activated to press the bottom of the rivet to deform it. The second electric slider 64 is activated to control the second L-shaped clamping arm 65 to clamp the core pulling rod. The third cylinder 61 is contracted to break the core pulling rod. When the pushing device 8 drags the next drilled hole under the indenter 62, the second electric slider 64 is activated to control the second L-shaped clamping arm 65 to release the core pulling rod therein, so that it enters the storage tank 811. The fourth motor 84 is activated to control the fifth connecting block 87 to rotate, and the core pulling rod therein is poured into the recycling box 812 for recycling.

[0082] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0083] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An automatic riveting machine, the automatic riveting machine includes a support platform (1), characterized in that, A vibrating disk (3) is provided on the support platform (1). Above the support platform (1), a receiving platform (2) for receiving rivets is fixed. The receiving platform (2) is located at the discharge port of the vibrating disk (3). A vertical bracket (4) is fixed on the support platform (1). A conveying mechanism (5) for conveying rivets is provided on the vertical bracket (4). Two pressing devices (6) are fixed on the vertical bracket (4). The pressing devices (6) are used to install the rivets into the drilled holes on the bracket to be riveted. The two pressing devices (6) are respectively located on both sides of the conveying mechanism (5). Above the support platform (1), a placing platform (7) for placing the bracket to be riveted is fixed. The conveying mechanism (5) is used to convey the rivets on the receiving platform (2) to the pressing devices (6). The receiving platform (2) includes a U-shaped fixing groove (21) fixed on the support platform (1). A first linear slide rail (22) is provided in the groove of the U-shaped fixing groove (21). A first electric slider (23) is slidably arranged in the first linear slide rail (22). Above the first electric slider (23), a first support block (24) is fixed. A V-shaped groove (25) is provided on the upper surface of the first support block (24). A first baffle (26) and a second baffle (27) are fixed in the groove of the U-shaped fixing groove (21). The first baffle (26) and the second baffle (27) are respectively located at both ends of the first linear slide rail (22). The second baffle (27) is higher than the first baffle (26). The rivets output from the vibrating disk (3) fall into the V-shaped groove (25). The core pulling rod of the rivet faces the side of the second baffle (27). A pushing device (8) for pushing the bracket to be riveted is provided on the placing platform (7). At one end of the placing platform (7), two feeding devices (10) for feeding the bracket to be riveted are provided. The positions of the two feeding devices (10) correspond to the two pressing devices (6) respectively. The conveying mechanism (5) includes a horizontal first air cylinder (51). The first air cylinder (51) is fixed on the vertical bracket (4). A first connecting block (52) is fixed on the output shaft of the first air cylinder (51). A vertical second air cylinder (53) is fixed on the first connecting block (52). The output end of the second air cylinder (53) is fixed with a second connecting block (54). Above the second connecting block (54), a third motor (57) is fixed. The pressing device (6) includes a third air cylinder (61) fixed on the vertical bracket (4). The output shaft of the third air cylinder (61) faces downward. Below the output shaft of the third air cylinder (61), a pressing head (62) for pressing the rivet cap is fixed. Below the pressing head (62), a slot for inserting the core pulling rod is provided. A clamping member is arranged in the slot. The pressing device (6) further includes a detection box (66). A feeding hole is provided on one side of the detection box (66) close to the conveying mechanism (5). Through holes are provided on both the upper side and the lower side of the detection box (66). The pushing device (8) includes a horizontal fourth cylinder (81) fixed on the placing platform (7). A third connecting block (82) is fixed on the output shaft of the fourth cylinder (81). A motor bracket (83) is fixed on the third connecting block (82). A fourth motor (84) is fixed on the motor bracket (83). The output shaft of the fourth motor (84) is parallel to the output shaft of the fourth cylinder (81). A fourth connecting block (85) is fixed on the output shaft of the fourth motor (84). A fifth cylinder (86) perpendicular to the output shaft of the fourth motor (84) is fixed on the fourth connecting block (85). A fifth connecting block (87) is fixed on the output shaft of the fifth cylinder (86). An installation groove (88) is provided at one end of the fifth connecting block (87), and a containing groove (811) is provided at the other end. When the fifth connecting block (87) rotates to be below the pressing device (6), the installation groove (88) faces downward. The feeding device (10) includes a rectangular frame (101). Horizontal seventh cylinders (102) are fixed on both inner walls of the rectangular frame (101). A horizontal strip-shaped clamping arm (103) is fixed on the output shaft of the seventh cylinder (102). The longitudinal section of the strip-shaped clamping arm (103) is L-shaped. A horizontal third linear slide rail (104) is provided on the strip-shaped clamping arm (103). A third electric slider (105) slides on the third linear slide rail (104). A first push plate (106) is fixed on the third electric slider (105). A feeding hole (107) is provided in the middle of the top plate of the rectangular frame (101). A vertical eighth cylinder (108) is fixed on the bottom plate of the rectangular frame (101). A driving box (109) is fixed on the output shaft of the eighth cylinder (108).

2. The automatic riveting machine according to claim 1, characterized in that, Two sixth cylinders (9) for upwardly pressing the rivets are provided at the bottom of the support platform (1). The sixth cylinders (9) correspond to the pressing device (6) one by one. A through hole corresponding to the sixth cylinder (9) is provided on the support platform (1).

3. An automatic riveting machine according to claim 1, characterized in that, The output shaft of the third motor (57) penetrates through the second connecting block (54) and is fixed with a jaw cylinder (56). Third motors (57) are fixed on the outer sides of the two jaws of the jaw cylinder (56). The output shafts of the third motors (57) penetrate through the corresponding jaws and are fixed with first L-shaped clamping arms (58). When clamping the pull rivet, the core rod of the pull rivet is clamped between the two first L-shaped clamping arms (58) by starting the jaw cylinder (56).

4. An automatic riveting machine according to claim 1, characterized in that, The clamping member includes two second linear slide rails (63) located at the bottom of the slot. Second electric sliders (64) slide in the second linear slide rails (63). The second electric sliders (64) are fixed with second L-shaped clamping arms (65). When the core rod is inserted into the slot, it is located between the two second L-shaped clamping arms (65).

5. An automatic riveting machine according to claim 1, characterized in that, A sliding rod (89) is installed in the installation groove (88). The diameter of the sliding rod (89) is smaller than the diameter of the drilling hole on the bracket to be riveted. A spring (810) is connected between the sliding rod (89) and the installation groove (88). Under the action of the spring (810), one end of the sliding rod (89) is located outside the installation groove. A recycling box (812) is provided on the side of the third connecting block (82) away from the blank holding device (6). When the fifth connecting block (87) rotates above the recycling box (812), the placing groove (811) faces downward.

6. An automatic riveting machine according to claim 1, characterized in that, An eighth motor (1010) is fixed in the driving box (109). The output shaft of the eighth motor (1010) penetrates through the top plate of the driving box (109) and is vertically fixed with a connecting bar (1011). Above the connecting bar (1011), a long strip-shaped support plate (1012) is fixed. Above the feeding hole (107), a limiting strip (1013) parallel to the long strip-shaped clamping arm (103) is fixed. The limiting strip (1013) is located at the middle position of the feeding hole (107). Above the rectangular frame (101), two placing plates (1014) are fixed. The placing plates (1014) are used for placing the brackets to be riveted. The placing plates (1014) are located on both sides of the feeding hole (107). A fourth linear slide rail is provided in the placing plates (1014). A fourth electric slider (1015) slides in the fourth linear slide rail. Above the fourth electric slider (1015), a second push plate (1016) for pushing the bracket to be riveted toward the feeding hole (107) is fixed.

7. The working method of the automatic riveting machine according to any one of claims 2-6, characterized in that, The working method includes the following steps: Step 1: Feeding the bracket to be riveted Place the bracket to be riveted on the placing platform (7) through the feeding device (10). Step 2: Aligning the holes Push the bracket to be riveted through the pushing device (8) to move it so that one of the drilling holes on it is aligned with the blank holding device (6). Step 3: Feeding the rivet Start the vibrating bowl (3) to discharge a single rivet onto the receiving platform (2). After the receiving platform (2) receives the rivet, stop the vibrating bowl (3). The receiving platform (2) can place the rivet at a fixed position. The conveying mechanism (5) clamps the rivet on the receiving platform (2) and conveys it to the blank holding device (6). Step 4: Riveting Install the rivet on the blank holding device (6) into the drilling hole of the bracket to be riveted. Press the rivet cap downward through the blank holding device (6). Press the rivet upward through the sixth cylinder (9). After the rivet is deformed, pull off the core-pulling rod through the blank holding device.

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