A crimping combination device for blind rivets

Abstract

The present invention relates to the field of blind rivet manufacturing, and in particular to a crimping assembly device for blind rivets. The present invention can make the nail core more stably inserted into the rivet body to form a blind rivet by clamping and limiting the nail core and the rivet body, and can quickly correct the partially bent nail core, so that the nail core and the rivet body can be crimped better, thereby more effectively improving the production quality of the blind rivet. The present invention includes a guide support frame, a guide frame 1 and a guide frame 2; the guide support frame is provided with a multi-step curved surface, the guide frame 1 is fixedly connected to the side of the guide support frame close to the multi-step curved surface, and the guide frame 2 is fixedly connected to the side of the guide support frame away from the guide frame 1. The present invention moves the contact rod and pushes the nail core to move, so that a part of the nail core is stuck in the rivet body, and then the retaining frame rotates to break contact with the rivet body, and the nail core and the rivet body fall under the action of gravity, so that the nail core is quickly inserted into the rivet body to form a blind rivet.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing blind rivets, and particularly to a crimping and combining device for blind rivets. Background Art

[0002] A blind rivet is a mechanical fastener that can complete riveting from one side of a workpiece, also known as a blind rivet or a pull rivet. During riveting, the core of the rivet is pulled by a special riveting gun to expand the riveting body, thereby playing a riveting role. Blind rivets are widely used in products such as construction, automobiles, ships, airplanes, machines, electrical appliances, furniture, etc. Among them, the open-type oval head blind rivet is the most widely used. The countersunk head blind rivet is suitable for riveting occasions where the surface needs to be smooth, and the closed-type blind rivet is suitable for riveting occasions requiring higher loads and certain sealing performance.

[0003] The manufacturing of blind rivets mainly includes manufacturing the core, manufacturing the riveting body, combining the core and the riveting body, finished product inspection, etc. Currently, the combination method of the core and the riveting body is to separately convey the core and the riveting body together, and then crimp the core into the riveting body to form a blind rivet. However, since neither the core nor the riveting body is well-positioned, it is easy to deviate during the process of inserting the core into the riveting body, resulting in the core being inserted crookedly. Moreover, most cores are slender in shape and are easily knocked and bent during the conveying process. After the core is bent, it cannot be accurately inserted into the riveting body, and the anti-detachment ability of the core will also be affected after insertion, thereby affecting the production quality of blind rivets. Summary of the Invention

[0004] The object of the present invention is to address the above technical problems and provide a crimping and combining device for blind rivets. By clamping and positioning the core and the riveting body, the core can be inserted into the riveting body more stably to form a blind rivet, and some bent cores can be quickly corrected, enabling better crimping of the core and the riveting body, thereby more effectively improving the production quality of blind rivets.

[0005] The technical implementation solution of the present invention is as follows: A crimping combination device for blind rivets, comprising a guiding support frame, a first guiding frame, a second guiding frame, an arc-shaped frame, a driving motor, a rotating plate, a connecting block, a contact mechanism and a propulsion mechanism. The guiding support frame is provided with a multi-step curved surface. The first guiding frame is fixedly connected to one side of the guiding support frame close to the multi-step curved surface. The first guiding frame is provided with a thick-edge protrusion. The second guiding frame is fixedly connected to the side of the guiding support frame away from the first guiding frame. The second guiding frame is provided with a thin-edge protrusion. The arc-shaped frame is fixedly connected to the guiding support frame. The arc-shaped frame is provided with an arc surface. The driving motor is fixedly connected to the side of the guiding support frame close to the second guiding frame. The output shaft of the driving motor passes through the center position of the second guiding frame. The rotating plate is fixedly connected to the output shaft of the driving motor. The rotating plate is located between the first guiding frame and the second guiding frame, and the rotating plate is in contact with the first guiding frame and the second guiding frame respectively. The connecting block is fixedly connected to the top of the rotating plate. A first placement groove is opened on the connecting block. The contact mechanism is arranged on the connecting block. The propulsion mechanism is arranged on the contact mechanism.

[0006] In a preferred embodiment of the present invention, the contact mechanism includes a connecting plate, a contact frame, a support spring, a guiding frame and a blocking frame. The connecting plate is fixedly connected to one side of the connecting block. The contact frame is slidably connected to the connecting plate. The contact frame is located above the first guiding frame, and the bottom end of the contact frame is in contact with the thick-edge protrusion of the first guiding frame. A support spring is connected between the connecting plate and the contact frame. The guiding frame is fixedly connected to the side of the connecting block away from the connecting plate. The blocking frame is slidably connected to the guiding frame. The blocking frame is located above the second guiding frame, and the bottom end of the blocking frame is in contact with the thin-edge protrusion of the second guiding frame. A support spring is also connected between the guiding frame and the blocking frame.

[0007] In a preferred embodiment of the present invention, a second placement groove is opened on the contact frame, and a third placement groove is opened on the blocking frame.

[0008] In a preferred embodiment of the present invention, the propulsion mechanism includes a guiding frame, a contact rod and a return spring. The guiding frame is fixedly connected to the side of the connecting plate away from the connecting block. The contact rod is slidably connected to the guiding frame. The contact rod is horizontally arranged. The contact rod is in contact with the guiding support frame. A return spring is connected between the guiding frame and the contact rod. A nail core is placed in the second placement groove of the contact frame. The nail core and the contact rod are on the same horizontal line. A rivet body is placed in the first placement groove of the connecting block.

[0009] In a preferred embodiment of the present invention, a limiting mechanism is further included. The limiting mechanism is arranged on the contact rod. The limiting mechanism includes a pressing rod, a fixed frame, a sliding frame, a clamping rod, a compression spring and a return spring. Two pressing rods are fixedly connected to the contact rod, and the two pressing rods are symmetrically arranged. Two fixed frames are fixedly connected to the connecting block, and the two fixed frames are symmetrically arranged. Two sliding frames are slidably connected to the guiding frame, and the sliding frames are slidably connected to the fixed frames. The lower end of the pressing rod contacts the sliding frame. A clamping rod is slidably connected to each of the two sliding frames, and the nail core is located between the two clamping rods. A compression spring is connected between the sliding frame and the clamping rod, and a return spring is connected between the fixed frame and the sliding frame.

[0010] In a preferred embodiment of the present invention, a rotating mechanism is further included. The rotating mechanism is arranged on one of the clamping rods. The rotating mechanism includes a pulling rod, a screw rod, a rotating friction wheel, a rotating disc and a ball. The pulling rod is fixedly connected to one end of one of the clamping rods. The screw rod is slidably connected to the pulling rod. The rotating friction wheel is rotatably connected to the connecting block. The rotating friction wheel is threadedly connected to the screw rod. The rotating friction wheel contacts the riveting body. A plurality of rotating discs are rotatably connected to the connecting block, and all of the plurality of rotating discs contact the riveting body. A plurality of balls are rotatably connected to the blocking frame, and all of the plurality of balls contact the riveting body.

[0011] In a preferred embodiment of the present invention, a limiting frame and an annular spring are further included. The limiting frame is slidably connected to one side of the arc-shaped frame close to the guiding frame 1. One of the clamping rods contacts the limiting frame. Two annular springs are connected between the limiting frame and the arc-shaped frame.

[0012] In a preferred embodiment of the present invention, a rubber pad is further included. The rubber pad is rotatably connected to one end of the contact rod close to the nail core.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The present invention limits the riveting body through the arc-shaped frame to prevent the riveting body from falling. When the contact rod rotates, it will be pushed by the guiding support frame, so that the contact rod moves and pushes the nail core to move, and then a part of the nail core is clamped into the riveting body to prevent the nail core from falling. At the same time, when the contact frame rotates, it will be separated from the nail core. When the contact rod continues to rotate, it will be further pushed by the guiding support frame, so that the contact rod continues to push the nail core to move, and then the nail core is completely inserted into the riveting body. Then, when the blocking frame rotates, it will be separated from the riveting body. The nail core and the riveting body continue to rotate and will fall under the action of gravity, so as to quickly insert the nail core into the riveting body to form a blind rivet.

[0014] 2. In the present invention, the movement of the contact rod drives the two pressing rods to move together, causing the two sliding frames to move towards each other and the two clamping rods to move. The movement of the two clamping rods will clamp the nail core, making the nail core stable and non-offset. Then, when the contact rod continues to move, it will push the nail core to move, enabling the nail core to be stably inserted into the rivet body. When the contact rod continues to move, it will push the two clamping rods to move, causing the two clamping rods to continue to clamp the nail core, so that the nail core can be stably and completely inserted into the rivet body, thereby improving the quality of the crimping between the nail core and the rivet body and enhancing the production quality of the blind rivet.

[0015] 3. In the present invention, the movement of one of the clamping rods drives the pulling rod to move, and the movement of the pulling rod drives the screw rod to move, causing the screw rod to rotate and the friction wheel to rotate. The rotation of the friction wheel will drive the rivet body to rotate through friction. At the same time, the rotation of several rotating discs and balls will reduce the friction with the rivet body, so that the rivet body can rotate more smoothly. During the process of the nail core moving and being inserted into the rivet body, if there is partial bending of the nail core, the rotation of the rivet body will squeeze the bent part of the nail core to correct the bent part of the nail core, so that the nail core can be inserted into the rivet body more quickly and stably, thereby enabling better crimping between the nail core and the rivet body and more effectively improving the production quality of the blind rivet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic perspective view of the first three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic perspective view of the second three-dimensional structure of the present invention.

[0018] Figure 3 It is a schematic perspective view of the guiding support frame of the present invention.

[0019] Figure 4 It is a schematic exploded perspective view of the guiding frame 1, guiding frame 2 and rotating plate of the present invention.

[0020] Figure 5 For the present invention Figure 1 The enlarged schematic perspective view of A in it.

[0021] Figure 6 For the present invention Figure 2 The enlarged schematic perspective view of B in it.

[0022] Figure 7 It is a schematic partial perspective view of the contact mechanism, propulsion mechanism and limiting mechanism of the present invention.

[0023] Figure 8 For the present invention Figure 7 The enlarged schematic perspective view of C in it.

[0024] Figure 9This is a partial three-dimensional structural schematic diagram of the contact mechanism and the rotating mechanism of the present invention.

[0025] Figure 10 This is a three-dimensional structural schematic diagram of the retaining frame and the ball of the present invention.

[0026] Figure 11 This is a partial disassembled three-dimensional structural schematic diagram of the present invention.

[0027] Among them, the above-mentioned drawings include the following reference numerals: 1. Guide support frame, 2. First guiding frame, 3. Second guiding frame, 4. Arc-shaped frame, 5. Driving motor, 51. Rotating plate, 6. Connecting block, 71. Connecting plate, 72. Contact frame, 73. Support spring, 74. Guide frame, 75. Retaining frame, 81. Guiding frame, 82. Contact rod, 83. Return spring, 84. Nail core, 85. Riveting body, 91. Pressing rod, 92. Fixed frame, 93. Sliding frame, 94. Clamping rod, 95. Compression spring, 96. Return spring, 101. Pulling rod, 102. Lead screw, 103. Rotating friction wheel, 104. Rotating disc, 105. Ball, 111. Limiting frame, 112. Annular spring, 12. Rubber pad. Detailed implementation mode

[0028] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below with reference to specific drawings.

[0029] Embodiment 1: A crimping combination device for a blind rivet, as Figures 1-11 shown, comprising a guide support frame 1, a first guiding frame 2, a second guiding frame 3, an arc-shaped frame 4, a driving motor 5, a rotating plate 51, a connecting block 6, a contact mechanism and a propulsion mechanism. The guide support frame 1 is provided with multi-stage curved surfaces. The first guiding frame 2 is connected to one side of the guide support frame 1 close to the multi-stage curved surfaces by bolts. The first guiding frame 2 is provided with thick-edge protrusions. The second guiding frame 3 is connected to the other side of the guide support frame 1 away from the first guiding frame 2 by bolts. The second guiding frame 3 is provided with thin-edge protrusions. The arc-shaped frame 4 is connected to the guide support frame 1 by bolts. The arc-shaped frame 4 is provided with an arc surface. The driving motor 5 is connected to one side of the guide support frame 1 close to the second guiding frame 3 by bolts. The output shaft of the driving motor 5 passes through the central position of the second guiding frame 3. The rotating plate 51 is connected to the output shaft of the driving motor 5 by bolts. The rotating plate 51 is located between the first guiding frame 2 and the second guiding frame 3, and the rotating plate 51 is in contact with the first guiding frame 2 and the second guiding frame 3 respectively. The connecting block 6 is connected to the top of the rotating plate 51 by bolts. A first placement groove is formed on the connecting block 6. The contact mechanism is arranged on the connecting block 6. The propulsion mechanism is arranged on the contact mechanism.

[0030] The contact mechanism includes a connecting plate 71, a contact frame 72, a support spring 73, a guide frame 74 and a stop frame 75. The connecting plate 71 is connected to one side of the connecting block 6 by a bolt. The contact frame 72 is slidably connected to the connecting plate 71. The contact frame 72 is located above the first guide frame 2, and the bottom end of the contact frame 72 contacts the thick-edge protrusion of the first guide frame 2. A support spring 73 is connected between the connecting plate 71 and the contact frame 72. The guide frame 74 is connected to the side of the connecting block 6 away from the connecting plate 71 by a bolt. The stop frame 75 is slidably connected to the guide frame 74. The stop frame 75 is located above the second guide frame 3, and the bottom end of the stop frame 75 contacts the thin-edge protrusion of the second guide frame 3. A support spring 73 is also connected between the guide frame 74 and the stop frame 75.

[0031] A second placement groove is formed in the contact frame 72, and a third placement groove is formed in the stop frame 75.

[0032] The propulsion mechanism includes a guide frame 81, a contact rod 82 and a return spring 83. The guide frame 81 is connected to the side of the connecting plate 71 away from the connecting block 6 by a bolt. The contact rod 82 is slidably connected to the guide frame 81. The contact rod 82 is horizontally arranged. The contact rod 82 contacts the guide support frame 1. A return spring 83 is connected between the guide frame 81 and the contact rod 82. The return spring 83 is sleeved on the contact rod 82. A nail core 84 is placed in the second placement groove of the contact frame 72. The nail core 84 and the contact rod 82 are on the same horizontal line. A riveting body 85 is placed in the first placement groove of the connecting block 6.

[0033] At first, because the thick edge protrusion of guide frame 1 2 presses against contact frame 72, and the thin edge protrusion of guide frame 2 3 presses against baffle frame 75, the two support springs 73 are in a compressed state. In actual operation, the staff starts the drive motor 5, and the external transmission equipment transmits the nail core 84 to the placement groove 2 of the contact frame 72, and transmits the rivet body 85 to the placement groove 1 of the connecting block 6. Then, the rotation of the output shaft of the drive motor 5 will drive the rotating plate 51 to rotate, and the rotation of the rotating plate 51 will drive the connecting block 6 to rotate. The rotation of the connecting block 6 will drive the connecting plate 71 and the guide frame 74 to rotate together, thereby causing the contact frame 72 and the baffle frame 75 to rotate together. The rotation of the connecting block 6 will drive the rivet body 85 to rotate at the same time, and the rotation of the rivet body 85 will contact the arc surface of the arc frame 4 The arc surface of the arc frame 4 will limit the rivet body 85 to prevent the rivet body 85 from falling when it rotates. The contact frame 72 will drive the nail core 84 to rotate while the contact frame 72 rotates. The connecting plate 71 will drive the guide frame 81 and the contact rod 82 to rotate together. The contact rod 82 will contact the multi-step curved surface of the guide support frame 1 and be pushed by the multi-step curved surface, so that the contact rod 82 moves to the side close to the guide frame 23. The reset spring 83 is compressed, and the contact rod 82 moves to contact one end of the nail core 84 and push the nail core 84 to move, so that a part of the nail core 84 is stuck in the rivet body 85 to prevent the nail core 84 from falling when it rotates. At this time, the rivet body 85 is blocked by the blocking frame 75, so that the rivet body 85 will not move, so that the nail core 84 is stably stuck in the rivet body 85, and the contact The rotation of the contact frame 72 will cause it to lose contact with the thick-edge protrusion of the guide frame 2. The reset of one of the support springs 73 will drive the contact frame 72 to move toward the side close to the guide frame 2. The movement of the contact frame 72 will no longer support the nail core 84. The contact rod 82 will continue to rotate and will be further pushed by the multi-step curved surface, so that the contact rod 82 will continue to move and push the nail core 84, and then the nail core 84 will be completely inserted into the rivet body 85. Then the contact rod 82 will continue to rotate and lose contact with the multi-step curved surface of the guide support frame 1. The reset spring 83 will reset the contact rod 82 and the contact rod 82 will reset and lose contact with the nail core 84. Then the contact frame 72 will continue to rotate and come into contact with the thick-edge protrusion of the guide frame 2 again, and will be pushed by the thick-edge protrusion, so that the contact frame 72 will reset. The return of the other support spring 73 will drive the return frame 75 to move to the side close to the guide frame 23, and the movement of the return frame 75 will no longer block the rivet body 85. When the connecting block 6 rotates to just below the rotating plate 51, the rivet body 85 continues to rotate and disengages from the arc frame 4. The arc frame 4 no longer limits the rivet body 85. At this time, the nail core 84 and the rivet body 85 will fall onto the next conveying equipment under the action of gravity, thereby quickly inserting the nail core 84 into the rivet body 85 to form a core-pulling rivet and conveying it. The return of the return frame 75 will re-contact the thin-edge protrusion of the guide frame 23 and be pushed by the thin-edge protrusion, so that the return frame 75 is reset.

[0034] Embodiment 2: On the basis of Embodiment 1, as Figures 1-9 shown, it further includes a limiting mechanism, the limiting mechanism is arranged on the contact rod 82, the limiting mechanism includes a pressing rod 91, a fixed frame 92, a sliding frame 93, a clamping rod 94, a compression spring 95 and a return spring 96. Two pressing rods 91 are welded on the contact rod 82, and the two pressing rods 91 are symmetrically arranged. Two fixed frames 92 are connected to the connecting block 6 by bolts, and the two fixed frames 92 are symmetrically arranged. Two sliding frames 93 are slidably connected to the guiding frame 81, and the sliding frame 93 is slidably connected to the fixed frame 92. The lower end of the pressing rod 91 contacts the sliding frame 93. Two clamping rods 94 are slidably connected to the two sliding frames 93, and the nail core 84 is located between the two clamping rods 94. A compression spring 95 is connected between the sliding frame 93 and the clamping rod 94, and the compression spring 95 is sleeved on the clamping rod 94. A return spring 96 is connected between the fixed frame 92 and the sliding frame 93.

[0035] While the connecting block 6 rotates, it will drive the two fixed frames 92 to rotate together. While the guiding frame 81 rotates, it will drive the two sliding frames 93 to rotate together. While the contact rod 82 rotates, it will drive the two pressing rods 91 to rotate together. When the fixed frame 92 rotates, it will drive the sliding frame 93 to rotate. When the contact rod 82 moves towards the side close to the guiding frame two 3, it will drive the two pressing rods 91 to move together. When the two pressing rods 91 move, they will push the two sliding frames 93 to move towards each other, and the return spring 96 will be compressed. When the two sliding frames 93 move, they will drive the two clamping rods 94 to move towards each other. When the two clamping rods 94 move, they will contact the nail core 84 and clamp the nail core 84, so that the nail core 84 is stable and does not deviate, so that the nail core 84 can be stably inserted into the riveting body 85 later. When the contact rod 82 continues to move, it will contact one end of the nail core 84 and push the nail core 84 to move, so that the nail core 84 is stably inserted into the riveting body 85. When the contact frame 72 is separated from the nail core 84, when the contact rod 82 continues to move, it will contact the two clamping rods 94 and push the two clamping rods 94 to move. The compression spring 95 will be compressed. When the two clamping rods 94 move, they will continue to clamp the nail core 84, so that the nail core 84 can be stably and completely inserted into the riveting body 85, thereby improving the crimping quality of the nail core 84 and the riveting body 85, so as to improve the production quality of the blind rivet. When the two pressing rods 91 continue to move, they will no longer push the two sliding frames 93. When the return spring 96 resets, it will drive the two sliding frames 93 to reset. When the sliding frame 93 resets, it will drive the clamping rod 94 to reset. When the clamping rod 94 resets, it will be separated from the nail core 84. When the contact rod 82 resets, it will drive the two pressing rods 91 to reset together. When the pressing rod 91 resets, it will first push the sliding frame 93 to move, and the return spring 96 will be compressed. When the sliding frame 93 moves, it will drive the clamping rod 94 to move. After the pressing rod 91 resets, it will no longer push the sliding frame 93. When the return spring 96 resets, it will drive the sliding frame 93 to reset. At the same time, when the contact rod 82 resets, it will be separated from the two clamping rods 94. When the compression spring 95 resets, it will drive the clamping rod 94 to reset.

[0036] Embodiment 3: On the basis of Embodiment 2, as Figures 1-11 shown, it further includes a rotating mechanism. The rotating mechanism is arranged on one of the clamping rods 94. The rotating mechanism includes a pulling rod 101, a lead screw 102, a rotating friction wheel 103, a rotating disk 104 and a ball 105. The pulling rod 101 is welded to one end of one of the clamping rods 94. The lead screw 102 is slidably connected to the pulling rod 101. The lead screw 102 is horizontally arranged. The rotating friction wheel 103 is rotatably connected to the connecting block 6. The rotating friction wheel 103 is threadedly connected to the lead screw 102. The rotating friction wheel 103 contacts the riveting body 85. A plurality of rotating disks 104 are rotatably connected to the connecting block 6. All the plurality of rotating disks 104 contact the riveting body 85. A plurality of balls 105 are rotatably connected to the retaining frame 75. All the plurality of balls 105 contact the riveting body 85.

[0037] At first, after the riveting body 85 is placed in the first placing groove of the connecting block 6, the riveting body 85 will contact several rotating disks 104 and balls 105, and at the same time, it will rotate with the rotating friction wheel 103. When one of the clamping rods 94 rotates, it will drive the pulling rod 101 to rotate. When the connecting block 6 rotates, it will drive the lead screw 102, the rotating friction wheel 103 and several rotating disks 104 to rotate. When the retaining frame 75 rotates, it will drive several balls 105 to rotate. When one of the clamping rods 94 moves towards the side close to the connecting block 6, it will drive the pulling rod 101 to move. When one of the clamping rods 94 moves towards the side away from the guiding frame 81, it will drive the pulling rod 101 to move. The movement of the pulling rod 101 will drive the movement of the lead screw 102. The movement of the lead screw 102 will drive the self-rotation of the rotating friction wheel 103. When the friction wheel rotates, it will drive the riveting body 85 to rotate by friction. The self-rotation of the riveting body 85 will drive several rotating disks 104 and balls 105 to rotate together. The self-rotation of several rotating disks 104 and balls 105 will reduce the friction force between them and the riveting body 85, so that the riveting body 85 can rotate more smoothly. During the process of the nail core 84 moving and inserting into the riveting body 85, since the nail core 84 is clamped by two clamping rods 94, the nail core 84 will not rotate. If there is partial bending of the nail core 84, it cannot be inserted into the riveting body 85 well. And the self-rotation of the riveting body 85 will squeeze the bent part of the nail core 84 to straighten the bent part of the nail core 84, so that the nail core 84 can be inserted into the riveting body 85 more quickly and stably, so that the nail core 84 and the riveting body 85 can be better crimped, and the production quality of the blind rivet can be effectively improved. When one of the clamping rods 94 resets, it will drive the pulling rod 101 and the lead screw 102 to reset together.

[0038] Embodiment 4: On the basis of Embodiment 3, as Figures 1-6 shown, it further includes a limiting frame 111 and an annular spring 112. The limiting frame 111 is slidably connected to the side of the arc-shaped frame 4 close to the first guiding frame 2. One of the clamping rods 94 contacts the limiting frame 111. Two annular springs 112 are connected between the limiting frame 111 and the arc-shaped frame 4.

[0039] At first, when the nail core 84 rotates, it will contact the limit frame 111, and the limit frame 111 will squeeze the nail core 84, thereby limiting the nail core 84 to prevent the nail core 84 from moving due to the influence of gravity during rotation. When one of the clamping rods 94 moves to the side away from the guide frame 81, it will push the limit frame 111 to move, and the annular spring 112 will be compressed. The movement of the limit frame 111 will move synchronously with the nail core 84, thereby continuing to limit the nail core 84 and making the nail core 84 more stable and not offset. When one of the clamping rods 94 resets, it will no longer push the limit frame 111, and the reset of the annular spring 112 will drive the limit frame 111 to reset. When the connecting block 6 rotates to directly below the rotating plate 51, the continued rotation of the nail core 84 will cause it to disengage from the limit frame 111, and the limit frame 111 will no longer limit the nail core 84. The nail core 84 and the riveting body 85 will fall onto the next conveying device under the action of gravity.

[0040] Embodiment 5: On the basis of Embodiment 4, as Figures 1-6 shown, it further includes a rubber pad 12, and the rubber pad 12 is rotatably connected to one end of the contact rod 82 close to the nail core 84.

[0041] When the contact rod 82 rotates, it will drive the rubber pad 12 to rotate. When the contact rod 82 moves to the side close to the guide frame two 3, it will drive the rubber pad 12 to move. The movement of the rubber pad 12 will contact one end of the nail core 84. The rubber pad 12 will reduce the friction between the contact rod 82 and the nail core 84, and at the same time buffer the nail core 84 to prevent damage to the nail core 84 when the contact rod 82 pushes the nail core 84 to move. When the contact rod 82 resets, it will drive the rubber pad 12 to reset, and the reset of the rubber pad 12 will disengage from one end of the nail core 84.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates 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. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A crimping combination device for blind rivets, characterized in that: It includes a guiding support frame, a first guiding frame (2), a second guiding frame (3), an arc-shaped frame (4), a driving motor (5), a rotating plate (51), a connecting block (6), a contact mechanism and a propulsion mechanism. The guiding support frame (1) is provided with a multi-step curved surface. The first guiding frame (2) is fixedly connected to one side of the guiding support frame (1) close to the multi-step curved surface. The first guiding frame (2) is provided with a thick-edge protrusion. The second guiding frame (3) is fixedly connected to the side of the guiding support frame (1) away from the first guiding frame (2). The second guiding frame (3) is provided with a thin-edge protrusion. The arc-shaped frame (4) is fixedly connected to the guiding support frame (1). The arc-shaped frame (4) is provided with an arc surface. The driving motor (5) is fixedly connected to the side of the guiding support frame (1) close to the second guiding frame (3). The output shaft of the driving motor (5) passes through the central position of the second guiding frame (3). The rotating plate (51) is fixedly connected to the output shaft of the driving motor (5). The rotating plate (51) is located between the first guiding frame (2) and the second guiding frame (3), and the rotating plate (51) is in contact with the first guiding frame (2) and the second guiding frame (3) respectively. The connecting block (6) is fixedly connected to the top of the rotating plate (51). A first placement groove is formed in the connecting block (6). The contact mechanism is arranged on the connecting block (6). The propulsion mechanism is arranged on the contact mechanism; The contact mechanism includes a connecting plate (71), a contact frame (72), a support spring (73), a guiding frame (74) and a blocking frame (75). The connecting plate (71) is fixedly connected to one side of the connecting block (6). The contact frame (72) is slidably connected to the connecting plate (71). The contact frame (72) is located above the first guiding frame (2), and the bottom end of the contact frame (72) is in contact with the thick-edge protrusion of the first guiding frame (2). A support spring (73) is connected between the connecting plate (71) and the contact frame (72). The guiding frame (74) is fixedly connected to the side of the connecting block (6) away from the connecting plate (71). The blocking frame (75) is slidably connected to the guiding frame (74). The blocking frame (75) is located above the second guiding frame (3), and the bottom end of the blocking frame (75) is in contact with the thin-edge protrusion of the second guiding frame (3). A support spring (73) is also connected between the guiding frame (74) and the blocking frame (75); A second placement groove is formed in the contact frame (72). A third placement groove is formed in the blocking frame (75); The propulsion mechanism includes a guiding frame (81), a contact rod (82) and a return spring (83). The guiding frame (81) is fixedly connected to the side of the connecting plate (71) away from the connecting block (6). The contact rod (82) is slidably connected to the guiding frame (81). The contact rod (82) is horizontally arranged and contacts the guiding and supporting frame (1). A return spring (83) is connected between the guiding frame (81) and the contact rod (82). A nail core (84) is placed in the second placing groove of the contact frame (72). The nail core (84) and the contact rod (82) are on the same horizontal line. A riveting body (85) is placed in the first placing groove of the connecting block (6).

2. The crimping combination device for a blind rivet according to claim 1, characterized in that: it further includes a limiting mechanism. The limiting mechanism is arranged on the contact rod (82). The limiting mechanism includes a pressing rod (91), a fixed frame (92), a sliding frame (93), a clamping rod (94), a compression spring (95) and a return spring (96). Two pressing rods (91) are fixedly connected to the contact rod (82). The two pressing rods (91) are symmetrically arranged. Two fixed frames (92) are fixedly connected to the connecting block (6). The two fixed frames (92) are symmetrically arranged. Two sliding frames (93) are slidably connected to the guiding frame (81). The sliding frames (93) are slidably connected to the fixed frames (92). The lower end of the pressing rod (91) contacts the sliding frame (93). Two clamping rods (94) are slidably connected to the two sliding frames (93). The nail core (84) is located between the two clamping rods (94). A compression spring (95) is connected between the sliding frame (93) and the clamping rod (94). A return spring (96) is connected between the fixed frame (92) and the sliding frame (93).

3. The crimping combination device for a blind rivet according to claim 2, characterized in that: it further includes a rotating mechanism. The rotating mechanism is arranged on one of the clamping rods (94). The rotating mechanism includes a pulling rod (101), a lead screw (102), a rotating friction wheel (103), a rotating disc (104) and a ball (105). The pulling rod (101) is fixedly connected to one end of one of the clamping rods (94). The lead screw (102) is slidably connected to the pulling rod (101). The rotating friction wheel (103) is rotatably connected to the connecting block (6). The rotating friction wheel (103) is threadedly connected to the lead screw (102). The rotating friction wheel (103) contacts the riveting body (85). A plurality of rotating discs (104) are rotatably connected to the connecting block (6). The plurality of rotating discs (104) all contact the riveting body (85). A plurality of balls (105) are rotatably connected to the retaining frame (75). The plurality of balls (105) all contact the riveting body (85).

4. The crimping combination device for a blind rivet according to claim 3, characterized in that: It further includes a limit frame (111) and an annular spring (112). The limit frame (111) is slidably connected to the side of the arc-shaped frame (4) close to the guide frame one (2). One of the clamping rods (94) contacts the limit frame (111), and two annular springs (112) are connected between the limit frame (111) and the arc-shaped frame (4).

5. A crimping combination device for a blind rivet according to claim 4, characterized in that: It further includes a rubber pad (12). The rubber pad (12) is rotatably connected to one end of the contact rod (82) close to the nail core (84).

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