Riveting structure of riveting machine

Abstract

The utility model belongs to the technical field of machining, and particularly relates to a rivet pressing structure of a riveting machine, which comprises a riveting arm, the riveting arm comprises a lower seat and an upper seat, a riveting rod driven by a power device to move up and down is arranged on the upper seat in a sliding manner, a rivet pressing rod is arranged below the riveting rod, and an elastic component is arranged on the periphery of the rivet pressing rod. The elastic assembly is pressed on a product to be riveted, and the lower end of the riveting rod is pressed on a rivet. The press-riveting device can effectively prevent the product to be press-riveted from moving, further prevents the rivet from deviating, and is high in product percent of pass.

Description

Technical field:

[0001] The utility model belongs to the technical field of mechanical processing, in particular to a pressure riveting structure of a riveting machine. Background technology:

[0002] Rivets consist of rivet heads and rivet rods. Rivet connection is a commonly used fixed connection method in mechanical processing, with the advantages of low cost and high connection tightness. Riveting machines are mostly used for riveting various hardware products such as pots and pans that use semi-circular head solid rivets.

[0003] A Chinese invention patent (publication number CN108907057B, application date 2018.08.16, publication date 2024.04.09) discloses a riveting machine, including an adjustment structure, the adjustment structure including: a frame, the frame has a first track; a base, slidably arranged on the first track, the base is fixed with a first connecting block and a second connecting block; a riveting arm, rotatably mounted on the first connecting block; and an adjustment element, rotatably mounted on the second connecting block, the adjustment element including a retractable control rod, the end of the control rod is rotatably matched with the riveting arm; the riveting arm has a positioning hole, and the riveting arm is also provided with a nail feeding mechanism, the nail feeding mechanism including: a material receiving seat, mounted on the riveting arm, The receiving seat has a receiving hole for receiving the rivet, the receiving seat has a notch on one side of the lower part of the receiving hole close to the positioning hole, and the receiving seat has a through hole connected with the receiving hole on the side corresponding to the notch; a stopper block is rotatably mounted on the receiving seat at the upper part, the stopper block cooperates with the notch, and is used to prevent the rivet from directly flying out through the notch when entering the receiving hole; a feeding piece cooperates with the through hole of the receiving seat and can move back and forth, and is used to drive the rivet in the receiving hole to push the stopper block away and move to the positioning hole; a third driving element is used to drive the feeding piece to move back and forth; and also includes a conveying mechanism, and the conveying mechanism includes: a first base, having a sliding groove for the rivet to slide downward, and the first base also has a first through hole; The movable block is arranged on one side of the sliding groove and can reciprocate relative to the first base. The movable block has a first working position and a second working position; a limit assembly is installed on the movable block, and the limit assembly includes two limit members, the two limit members are an upper limit member and a lower limit member, and the upper limit member and the lower limit member are staggered up and down. When the movable block is in the first working position, the upper limit member covers the sliding groove, and the lower limit member no longer covers the sliding groove. The upper limit member is used to cooperate with the rivet rod of the rivet to prevent the rivet from sliding downward. The rivet between the two limit members can slide downward under the action of gravity. When the movable block is in the second working position, the upper limit member no longer covers the sliding groove, and the lower limit member covers the sliding groove. The rivet Slide downward and cooperate with the lower limit member, and the lower limit rod is used to prevent the rivet from sliding further downward; the first driving element is used to drive the movable block to move back and forth, so that the movable block switches between the first working position and the second working position, and releases the rivets one by one; the hollow air intake shaft is located below the limit assembly, and the first end of the air intake shaft has a first notch, and the first notch is used for the rivet that passes through the limit assembly to fall into the air intake shaft, the first end of the air intake shaft is slidably matched with the first through hole, and the second end of the air intake shaft is used to be connected with the air injection pipeline, and the air injection pipeline is used to input gas to one side of the air intake shaft; the second driving element is used to drive the air intake shaft to move back and forth, so that the first notch switches between inside the first through hole and directly below the sliding groove;The rivet slide tube has one end connected to the first through hole and the other end connected to the material receiving hole, and is used to receive the rivet from the air intake shaft and output the rivet to the material receiving hole when the first notch is located in the first through hole and the air injection pipeline inputs gas to the air intake shaft; the riveting arm includes a lower seat, the nail feeding mechanism is installed on the lower seat, and the riveting arm also includes an upper seat, the upper seat is provided with a riveting oil cylinder and a riveting rod connected to the piston rod of the riveting oil cylinder, and the riveting oil cylinder is used to drive the riveting rod to move to one side of the positioning hole. ;

[0004] The disadvantage of the above riveting machine is that the pot and the pot handle are riveted only by pressing the riveting rod on the rivet rod. During the riveting process, the pot handle is easy to move, which leads to the rivet deviation and a high failure rate. Summary of the invention:

[0005] The utility model aims to provide a riveting structure of a riveting machine, which can effectively prevent the product to be riveted from moving, thereby preventing the rivet from being deflected, and the product qualification rate is high.

[0006] The utility model is achieved in this way:

[0007] A riveting structure of a riveting machine includes a riveting arm, which includes a lower seat and an upper seat. A riveting rod is slidably provided on the upper seat and is driven by a power device to move up and down. A riveting rod is provided below the riveting rod. An elastic component is provided on the periphery of the riveting rod. During the riveting process, the elastic component is pressed on the product to be riveted, and the lower end of the riveting rod is pressed on the rivet.

[0008] In the above-mentioned riveting structure of a riveting machine, the elastic component is an elastic sleeve mounted on the outside of the riveting rod. During the riveting process, the elastic component is provided on the outer periphery of the riveting rod. During the riveting process, the elastic component is pressed on the product to be riveted, and the lower end of the riveting rod is pressed on the rivet.

[0009] In the above-mentioned riveting structure of a riveting machine, the material of the elastic sleeve is rubber or polyurethane.

[0010] In the above-mentioned riveting structure of a riveting machine, the elastic sleeve and the riveting rod are connected in such a way that the elastic sleeve and the riveting rod are tightly matched.

[0011] In the above-mentioned riveting structure of a riveting machine, the elastic component includes a mounting sleeve whose upper end is fixedly connected to the riveting rod, a pressing sleeve mounted outside the riveting rod, and a spring whose elastic force causes the pressing sleeve to move downward. The upper end of the pressing sleeve is slidably arranged in the mounting sleeve. During the riveting process, the pressing sleeve is pressed on the product to be riveted, and the lower end of the riveting rod is pressed on the rivet.

[0012] In the above-mentioned riveting structure of a riveting machine, the spring is sleeved outside the riveting rod, and the upper end thereof abuts against the riveting rod, and the lower end thereof abuts against the pressing sleeve.

[0013] In the above-mentioned riveting structure of a riveting machine, a limiting convex ring is provided at the upper end of the pressing sleeve, and an annular protrusion is provided inside the mounting sleeve. When the limiting convex ring contacts the annular protrusion, the pressing sleeve is restricted from moving downward.

[0014] In the above-mentioned riveting structure of a riveting machine, a buffer sleeve is provided at the lower end of the pressing sleeve, and the buffer sleeve includes a buffer pad located below the pressing sleeve and a connecting sleeve for connecting the pressing sleeve, and the connecting sleeve is sleeved outside the pressing sleeve.

[0015] In the above-mentioned riveting structure of a riveting machine, the buffer pad and the connecting sleeve are an integrated structure, and the material is nylon or polyurethane.

[0016] In the above-mentioned pressure riveting structure of a riveting machine, the connection method of the connecting sleeve and the pressing sleeve can be: the connecting sleeve and the pressing sleeve are threadedly connected.

[0017] In the above-mentioned pressure riveting structure of a riveting machine, the connection mode of the connecting sleeve and the pressing sleeve may also be: the connecting sleeve and the pressing sleeve are tightly matched.

[0018] In the above-mentioned pressure riveting structure of a riveting machine, the material hardness of the pressure riveting rod is greater than the material hardness of the rivet driving rod, and the pressure riveting rod is detachably connected to the rivet driving rod by a fastening screw.

[0019] In the above-mentioned riveting structure of a riveting machine, a placement seat for placing rivets is provided on the lower seat, and the placement seat includes a head and a rod, the head is provided with a groove for placing rivets, and the rod is connected to the lower seat.

[0020] In the above-mentioned pressure riveting structure of a riveting machine, the connection mode between the rod part and the lower seat may be: the rod part and the lower seat are threadedly connected.

[0021] In the above-mentioned pressure riveting structure of a riveting machine, the connection mode between the rod and the lower seat may also be: the rod and the lower seat are tightly matched.

[0022] In the above-mentioned riveting structure of a riveting machine, the material of the riveting rod is high-speed steel or hard alloy steel.

[0023] In the above-mentioned riveting structure of a riveting machine, the power device is a cylinder, a hydraulic cylinder, a gas-liquid cylinder or a linear motor.

[0024] The outstanding advantages of the utility model compared with the prior art are:

[0025] 1. During the riveting process, the utility model presses the product to be riveted by the elastic component, effectively preventing it from moving, thereby preventing the rivet from riveting off, and the product qualification rate is high;

[0026] 2. The elastic component of the utility model is an elastic sleeve sleeved outside the pressure riveting rod, which has a simple structure, few parts and is easy to install;

[0027] 3. The elastic component of the utility model includes a mounting sleeve whose upper end is fixedly connected to the riveting rod, a pressing sleeve sleeved outside the riveting rod, and a spring whose elastic force causes the pressing sleeve to move downward. The upper end of the pressing sleeve is slidably arranged in the mounting sleeve. During the riveting process, the pressing sleeve is pressed on the product to be riveted, and the lower end of the riveting rod is pressed on the rivet. The elastic distance of the elastic component is large, and the riveting effect of the riveting rod is good.

[0028] 4. The utility model provides a buffer sleeve at the lower end of the pressing sleeve, and the buffer sleeve includes a buffer pad located below the pressing sleeve and a connecting sleeve for connecting the pressing sleeve. The connecting sleeve is mounted outside the pressing sleeve, which effectively prevents the pressing sleeve from generating indentations on the product, and improves the product appearance. Description of the drawings:

[0029] Figure 1 It is a cross-sectional view of the first embodiment of the utility model;

[0030] Figure 2 It is a cross-sectional view of the second embodiment of the present utility model.

[0031] Figure numerals: 1, riveting arm; 2, lower seat; 3, upper seat; 4, riveting rod; 5, pressure riveting rod; 6, rivet; 7, elastic sleeve; 8, mounting sleeve; 9, pressure sleeve; 10, spring; 11, limiting convex ring; 12, annular protrusion; 13, buffer sleeve; 13a, buffer pad; 13b, connecting sleeve; 14, placement seat; 14a, head; 14b, rod. Specific implementation method:

[0032] The present invention is further described below with reference to specific embodiments. Figure 1 —2:

[0033] Embodiment 1:

[0034] A riveting structure of a riveting machine includes a riveting arm 1, the riveting arm 1 includes a lower seat 2 and an upper seat 3, a rivet rod 4 driven by a power device to move up and down is slidably provided on the upper seat 3, a riveting rod 5 is provided below the riveting rod 4, an elastic component is provided on the periphery of the riveting rod 5, during the riveting process, the elastic component is pressed on the product to be riveted, and the lower end of the riveting rod 5 is pressed on the rivet 6.

[0035] The working principle of the utility model is as follows: the power device drives the rivet rod 4 to move downward, the elastic component is first pressed on the product to be riveted, the rivet rod 4 continues to move downward, the elastic component is compressed, and the lower end of the riveting rod 5 is pressed on the rivet 6 to complete the riveting; after the riveting is completed, the power device drives the rivet rod 4 to move upward, driving the riveting rod 5 to move upward, the elastic component is reset, the rivet rod 4 continues to move upward, driving the elastic component and the riveting rod 5 to move upward together, and the riveted product can be taken out.

[0036] In the process of riveting, the utility model presses the product to be riveted by the elastic component, effectively preventing the product from moving, thereby preventing the rivet 6 from riveting off, and achieving a high product qualification rate.

[0037] The structure of the elastic component: Figure 1 As shown, the elastic component is an elastic sleeve 7 sleeved on the outside of the riveting rod 5. During the riveting process, the elastic sleeve 7 is pressed on the product to be riveted, and the lower end of the riveting rod 5 is pressed on the rivet 6. The power device drives the riveting rod 4 to move downward, and the elastic sleeve 7 is first pressed on the product to be riveted. The riveting rod 4 continues to move downward, the elastic sleeve 7 is compressed, and the riveting rod 5 continues to move downward until the lower end of the riveting rod 5 is pressed on the rivet 6. The structure is simple, the parts are few, and it is easy to install.

[0038] Preferably, the elastic sleeve 7 is made of rubber or polyurethane. In this embodiment, the elastic sleeve 7 is made of rubber, which has strong elastic deformation ability and good compression effect.

[0039] The elastic sleeve 7 and the pressure riveting rod 5 are connected in such a way that the elastic sleeve 7 and the pressure riveting rod 5 are tightly matched.

[0040] In order to achieve a better riveting effect and effectively save costs, the material hardness of the rivet rod 5 is greater than the material hardness of the rivet rod 4, and the rivet rod 5 is detachably connected to the rivet rod 4 by a fastening screw.

[0041] Preferably, the material of the rivet rod 5 is high speed steel or hard alloy steel. In this embodiment, the material of the rivet rod 5 is high speed steel.

[0042] In order to better limit the position of the rivet 6 , a placement seat 14 for placing the rivet 6 is provided on the lower seat 2 . The placement seat 14 includes a head 14 a and a rod 14 b . The head 14 a is provided with a groove for placing the rivet 6 . The rod 14 b is connected to the lower seat 2 .

[0043] The connection mode between the rod portion 14 b and the lower seat 2 is: the rod portion 14 b and the lower seat 2 are threadedly connected.

[0044] Preferably, the power device is a cylinder, a hydraulic cylinder, a gas-liquid cylinder or a linear motor. In this embodiment, the power device is a hydraulic cylinder.

[0045] Embodiment 2:

[0046] The structure of this embodiment is basically the same as that of the above-mentioned embodiment 1, and the main difference is that: Figure 2As shown, the elastic component includes a mounting sleeve 8 whose upper end is fixedly connected to the rivet rod 4, a pressing sleeve 9 sleeved outside the riveting rod 5, and a spring 10 whose elastic force causes the pressing sleeve 9 to move downward. The upper end of the pressing sleeve 9 is slidably arranged in the mounting sleeve 8. During the riveting process, the pressing sleeve 9 is pressed on the product to be riveted, and the lower end of the riveting rod 5 is pressed on the rivet 6. The power device drives the riveting rod 4 to move downward, and the pressing sleeve 9 is first pressed on the product to be riveted. The riveting rod 4 continues to move downward, the spring 10 is compressed, and the riveting rod 5 moves downward relative to the pressing sleeve 9 until the lower end of the riveting rod 5 is pressed on the rivet 6.

[0047] The installation structure of the spring 10: the spring 10 is sleeved outside the pressure riveting rod 5, and the upper end thereof abuts against the riveting rod 4, and the lower end thereof abuts against the pressure sleeve 9.

[0048] The limiting structure of the pressing sleeve 9: a limiting convex ring 11 is provided at the upper end of the pressing sleeve 9, and an annular protrusion 12 is provided inside the mounting sleeve 8. When the limiting convex ring 11 contacts the annular protrusion 12, the pressing sleeve 9 is limited from moving downward.

[0049] To prevent the pressing sleeve 9 from causing indentations on the product, a buffer sleeve 13 is provided at the lower end of the pressing sleeve 9. The buffer sleeve 13 includes a buffer pad 13a located below the pressing sleeve 9 and a connecting sleeve 13b for connecting the pressing sleeve 9. The connecting sleeve 13b is sleeved outside the pressing sleeve 9.

[0050] Preferably, the buffer pad 13a and the connecting sleeve 13b are an integrated structure, and the material is nylon or polyurethane. In this embodiment, the buffer pad 13a and the connecting sleeve 13b are an integrated structure, and the material is nylon.

[0051] The connection method of the connecting sleeve 13b and the pressing sleeve 9 is as follows: the connecting sleeve 13b and the pressing sleeve 9 are threadedly connected.

[0052] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A riveting structure of a riveting machine, comprising a riveting arm (1), the riveting arm (1) comprising a lower seat (2) and an upper seat (3), a riveting rod (4) slidably disposed on the upper seat (3) and driven up and down by a power device, characterized in that: A pressure riveting rod (5) is provided below the riveting rod (4), and an elastic component is provided on the outer periphery of the pressure riveting rod (5). During the riveting process, the elastic component is pressed onto the product to be riveted, and the lower end of the pressure riveting rod (5) is pressed onto the rivet (6).

2. The pressure riveting structure of a riveting machine according to claim 1, characterized in that: The elastic component is an elastic sleeve (7) sleeved on the outside of the riveting rod (5). During the riveting process, the elastic sleeve (7) is pressed onto the product to be riveted, and the lower end of the riveting rod (5) is pressed onto the rivet (6).

3. The pressure riveting structure of a riveting machine according to claim 1, characterized in that: The elastic component comprises a mounting sleeve (8) whose upper end is fixedly connected to the riveting rod (4), a pressing sleeve (9) sleeved outside the riveting rod (5), and a spring (10) whose elastic force causes the pressing sleeve (9) to move downward. The upper end of the pressing sleeve (9) is slidably arranged in the mounting sleeve (8). During the riveting process, the pressing sleeve (9) is pressed onto the product to be riveted, and the lower end of the riveting rod (5) is pressed onto the rivet (6).

4. The pressure riveting structure of a riveting machine according to claim 3, characterized in that: The spring (10) is sleeved outside the riveting rod (5), and the upper end thereof abuts against the riveting rod (4), and the lower end thereof abuts against the pressing sleeve (9).

5. The pressure riveting structure of a riveting machine according to claim 3, characterized in that: The upper end of the pressing sleeve (9) is provided with a limiting convex ring (11), and the inside of the mounting sleeve (8) is provided with an annular protrusion (12). When the limiting convex ring (11) contacts the annular protrusion (12), the pressing sleeve (9) is limited from moving downward.

6. The pressure riveting structure of a riveting machine according to claim 3, characterized in that: A buffer sleeve (13) is provided at the lower end of the pressing sleeve (9), and the buffer sleeve (13) comprises a buffer pad (13a) located below the pressing sleeve (9) and a connecting sleeve (13b) for connecting the pressing sleeve (9), wherein the connecting sleeve (13b) is sleeved outside the pressing sleeve (9).

7. The pressure riveting structure of a riveting machine according to claim 1, characterized in that: The material hardness of the pressure rivet rod (5) is greater than the material hardness of the rivet rod (4), and the pressure rivet rod (5) is detachably connected to the rivet rod (4) via a fastening screw.

8. The pressure riveting structure of a riveting machine according to claim 1, characterized in that: The lower seat (2) is provided with a placement seat (14) for placing a rivet (6), and the placement seat (14) comprises a head (14a) and a rod (14b), wherein the head (14a) is provided with a groove for placing the rivet (6), and the rod (14b) is connected to the lower seat (2).

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