A metal sheet riveting device

Abstract

This utility model discloses a metal sheet riveting device, belonging to the field of riveting technology. The device includes a mounting frame, with a riveting machine body mounted on the top of the frame. A hydraulic drive device is mounted on the outer end of the riveting machine body, and a riveting punch is mounted on the output end of the hydraulic drive device. Drive components are mounted on both sides of the vertically moving riveting punch, and the two drive components are inclined. When the riveting punch drives the drive components downwards, it squeezes a slip ring, which in turn moves the side molds towards the mold base. When the two side molds fit together, they cooperate with the central mold base to form a complete mold. Simultaneously, the riveting punch also squeezes the metal sheet into the mold, causing it to deform and connect. When the riveting punch moves upwards, it again drives the movable mold to separate and reset via the drive components, thus automatically demolding the processed workpiece without it getting stuck in the mold, making it easy to remove.

Description

Technical Field

[0001] This utility model relates to the field of riveting technology, and more specifically, to a metal sheet riveting device. Background Technology

[0002] A metal sheet riveting device is a mechanical device used to connect metal sheets together through a riveting process. By applying pressure, the rivet or the metal sheet itself is deformed to form a permanent mechanical connection. The connection formed by the deformation of the metal sheet itself is called a rivetless process (also known as self-piercing riveting or rivetless riveting). It is a cold forming process that does not require pre-drilling and directly forms a mechanical connection on the metal sheet by stamping. Unlike traditional riveting, it does not require the use of separate rivets. Instead, it uses a special mold and punch to deform and interlock the sheet itself to form a high-strength connection.

[0003] Chinese Patent Announcement No. CN220574538U provides a low-cost rivetless riveting device. This solution enables riveting operations on products through the cooperation of a mounting base, a first hollow base, a second hollow base, an air inlet, a connecting cavity, an air inlet chamber, a switch assembly, a switch push rod, a connecting platform, a fixed shaft, a first riveting seat, a second riveting seat, a riveting die, a reset extrusion device, a reset pressurizing device, and the riveting die. At the same time, the structure is simple and the size is small, which greatly reduces the size of the riveting equipment and lowers the price, thereby significantly reducing the cost expenditure of enterprises.

[0004] Rivetless riveting is a process that uses molds and punches to deform and interlock sheet metal, forming a high-strength connection. However, in the above-mentioned method and the riveting equipment currently on the market, the extrusion of the punch during deformation riveting causes the sheet metal to extend and deform into the mold. At this time, not only will a connection be formed between the workpieces, but the deformed part of the workpiece will also abut against the inner wall of the concave mold and get stuck inside. Therefore, when the worker removes the workpiece, he / she has to pull it out forcefully, which causes inconvenience and reduces work efficiency.

[0005] Therefore, a metal sheet riveting device is proposed to address the above problems. Utility Model Content

[0006] 1. Technical problems to be solved This utility model provides a metal sheet riveting device, which can improve the problems existing in related technologies: during riveting, due to the extrusion of the punch, the sheet metal will extend and deform into the mold. At this time, not only will the workpieces be connected, but the deformed part of the workpiece will also abut against the inner wall of the concave mold. It takes force to pull the workpiece out, which causes inconvenience in use.

[0007] 2. Technical Solution To solve the above problems, the present invention adopts the following technical solution.

[0008] This application provides a metal sheet riveting device, including a mounting frame. A riveting machine body is mounted on the top of the mounting frame. A hydraulic drive device is mounted on the outer end of the riveting machine body. A riveting punch is mounted on the output end of the hydraulic drive device. The riveting punch is driven to move up and down by the hydraulic drive device. A mounting base is fixedly mounted on the inner side of the riveting machine body. A mold assembly is provided on the top of the mounting base. Two drive components are provided on the outer end of the riveting punch. The mold assembly includes a mold base and two movable molds. The two movable molds are driven to move by the drive components, and the two movable molds move in opposite directions. The mold base is located between the two movable molds. The two movable molds cooperate with the mold base to form a riveting mold.

[0009] The technical solutions described in this application embodiment have at least the following technical effects: Drive components are installed on both sides of the riveting punch that moves up and down. The two drive components are set at an angle, and the slip ring on the movable mold is slidably connected to the slide rod. Therefore, when the riveting punch drives the drive components to move downward, it will squeeze the slip ring, and the slip ring will drive the side mold to move towards the mold base. When the two side molds are in contact, they cooperate with the mold base in the middle to form a complete mold. At the same time, the riveting punch will also squeeze the metal sheet into the mold to deform and connect it. When the riveting punch moves upward, it will drive the movable mold to separate and reset through the drive components. Thus, the processed workpiece is automatically demolded and will not be stuck in the mold, making it easy to pick up.

[0010] In some embodiments, the mold assembly further includes a fixing seat, which is detachably mounted on the top of the mounting base, and the mold base is fixedly mounted on the top of the fixing seat. Two sliding grooves are formed at the outer end of the fixing seat.

[0011] In some embodiments, a crossbar is fixedly installed inside each of the two slides, and a telescopic spring is sleeved on the outer end of the crossbar.

[0012] In some embodiments, the movable mold includes a side mold, with two sliding sleeves fixedly connected to the bottom end of the side mold. The sliding sleeves are slidably connected to the crossbar, and the two ends of the telescopic spring abut against the outer ends of the two sliding sleeves respectively. The side mold slides in the groove through the cooperation of the sliding sleeves and the crossbar.

[0013] In some embodiments, the movable mold further includes a slip ring, a connecting block is fixedly connected to the outer end of the side mold, one end of the connecting block is provided with an installation groove, two rotating shafts are fixedly installed inside the installation groove, the two sides of the slip ring are respectively rotatably connected to the two rotating shafts, and a semi-circular through hole adapted to the mold base is provided at the outer end of the side mold.

[0014] In some embodiments, the drive assembly includes a drive plate, an inner groove is provided on the drive plate, a slide rod is fixedly installed inside the inner groove, the drive plate and the slide rod are inclined relative to the riveting punch, and slots adapted to the drive plate are provided at both ends of the mounting base.

[0015] In some embodiments, the slip ring is slidably sleeved on the outer surface of the slide rod, the slide rod is driven to move downward by the riveting punch, and the slip ring is pushed by the slide rod to drive the side mold to move towards the mold base. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partially enlarged structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the mold assembly structure of this utility model; Figure 4 This is a schematic diagram of the drive component structure of this utility model; Figure 5 This is a schematic diagram of the movable mold structure of this utility model; Figure 6 This is a schematic diagram of the fixing base structure of this utility model.

[0017] Explanation of the labels in the diagram: 1. Mounting bracket; 2. Riveting machine body; 3. Hydraulic drive device; 4. Riveting punch; 5. Drive assembly; 51. Drive board; 52. Movable slot; 53. Slide rod; 6. Mold assembly; 61. Fixed base; 62. Mold base; 63. Slide groove; 64. Crossbar; 65. Telescopic spring; 66. Movable mold; 661. Side mold; 662. Connecting block; 663. Mounting groove; 664. Slip ring; 665. Rotating shaft; 666. Sliding sleeve; 7. Mounting bracket; 8. Slots. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-6 A metal sheet riveting device includes a mounting frame 1, a riveting machine body 2 mounted on the top of the mounting frame 1, a hydraulic drive device 3 mounted on the outer end of the riveting machine body 2, a riveting punch 4 mounted on the output end of the hydraulic drive device 3, the riveting punch 4 being driven to move up and down by the hydraulic drive device 3, a mounting base 7 being fixedly mounted on the inner side of the riveting machine body 2, a mold assembly 6 being provided on the top of the mounting base 7, two drive assemblies 5 being provided on the outer end of the riveting punch 4, the mold assembly 6 including a mold base 62 and two movable molds 66, the two movable molds 66 being driven to move by the drive assemblies 5, and the two movable molds 66 moving in opposite directions, the mold base 62 being located between the two movable molds 66, the two movable molds 66 cooperating with the mold base 62 to form a riveting mold.

[0020] The device in this solution is mainly used for riveting metal sheets without rivets. It is a cold forming process that directly forms mechanical connections on metal sheets through stamping. The riveting machine body 2 is fixed on the top of the mounting frame 1, and the hydraulic drive device 3 is installed on the top of the riveting machine body 2. The riveting machine body 2 mainly houses the control system, which controls the operation of the hydraulic drive device 3. The hydraulic drive device 3 also requires an external hydraulic pipeline system to provide power.

[0021] The output end of the hydraulic drive device 3 is retractable, and a riveting punch 4 is installed at the output end. A mounting base 7 is fixed inside the riveting machine body 2, and a mold assembly 6 is installed on top of the mounting base 7. Drive assemblies 5 are installed on both sides of the riveting punch 4. The drive assemblies 5 are mainly used to drive the mold assembly 6. The two drive assemblies 5 are inclined, and the slip ring 664 on the movable mold 66 is slidably connected to the slide rod 53. The slip ring 664 is rotatably installed inside the mounting groove 663. Therefore, when the riveting punch 4... When the drive assembly 5 moves downward, it squeezes the slip ring 664, which in turn drives the side mold 661 to move towards the mold base 62. When the two side molds 661 fit together, they cooperate with the middle mold base 62 to form a complete mold. At the same time, the riveting punch 4 will also squeeze the metal sheet into the mold to deform and connect it. When the riveting punch 4 moves upward, it will drive the movable mold 66 to separate and reset through the drive assembly 5, so that the processed workpiece will be automatically demolded and will not be stuck in the mold, making it easy to pick up.

[0022] Please see Figure 6 and Figures 1-3 The mold assembly 6 also includes a fixing seat 61, which is detachably mounted on the top of the mounting base 7. The mold base 62 is fixedly mounted on the top of the fixing seat 61, and two sliding grooves 63 are provided at the outer end of the fixing seat 61.

[0023] Both slides 63 have crossbars 64 fixedly installed inside, and the outer ends of the crossbars 64 are fitted with telescopic springs 65.

[0024] In this design, the fixing base 61 is bolted to the mounting base 7, making the mold assembly 6 detachable and replaceable. Two sliding grooves 63 are opened on the top of the fixing base 61, and a crossbar 64 is fixed inside the sliding grooves 63. A telescopic spring 65 is sleeved around the crossbar 64. The telescopic spring 65 is mainly used to assist the movable mold 66 in resetting. The mold base 62 is fixed on the top of the fixing base 61. When the two movable molds 66 are combined, the mold base 62 is located in the through hole opened on the movable mold 66, so that the two movable molds 66 and the mold base 62 can form a complete mold.

[0025] Please see Figure 4 and Figure 5 The movable mold 66 includes a side mold 661. Two sliding sleeves 666 are fixedly connected to the bottom end of the side mold 661. The sliding sleeves 666 are slidably connected to the crossbar 64. The two ends of the telescopic spring 65 abut against the outer ends of the two sliding sleeves 666 respectively. The side mold 661 slides in the slide groove 63 through the cooperation of the sliding sleeves 666 and the crossbar 64.

[0026] The movable mold 66 also includes a slip ring 664. A connecting block 662 is fixedly connected to the outer end of the side mold 661. One end of the connecting block 662 has an installation groove 663. Two rotating shafts 665 are fixedly installed inside the installation groove 663. The two sides of the slip ring 664 are rotatably connected to the two rotating shafts 665 respectively. The outer end of the side mold 661 has a semi-circular through hole that matches the mold base 62.

[0027] In this design, the side mold 661 has two sliding sleeves 666 fixed at its bottom. The sliding sleeves 666 match the slide groove 63, and the crossbar 64 passes through the sliding sleeves 666, allowing the sliding sleeves 666 to slide in connection with the crossbar 64. At the same time, since the telescopic spring 65 is also sleeved on the crossbar 64, the two ends of the telescopic spring 65 will abut against the sliding sleeves 666 at the bottom of the two side molds 661. Thus, when the two side molds 661 are combined, the telescopic spring 65 will be compressed. When they are separated, the force of the telescopic spring 65 will assist the drive assembly 5 in driving the movable mold 66, making it slide more stably in the slide groove 63.

[0028] A connecting block 662 is fixed to the outer end of the side mold 661, and an installation groove 663 is opened at the end of the connecting block 662 away from the side mold 661. Rotating shafts 665 are fixed on both sides of the inner side of the installation groove 663. The rotating shafts 665 are mainly used to install the slip ring 664. The two sides of the slip ring 664 are rotatably connected to the two rotating shafts 665, so that the slip ring 664 can tilt and can be connected to the tilted drive assembly 5.

[0029] When performing rivetless riveting, first place two metal plates on the side mold 661, aligning the riveting point with the mold base 62. When the slip ring 664 moves inward under the drive of the drive component 5, it will drive the connecting block 662 and the side mold 661 to move. The side mold 661 can slide along the crossbar 64 in the slide groove 63 through the sliding sleeve 666. The two mold components 6 move in opposite directions, thus they can approach and merge with each other, cooperating with the mold base 62 to form a complete mold. When the two movable molds 66 are completely merged, the riveting punch 4 will also move into the through hole of the side mold 661. Located above the mold base 62, the riveting punch 4 will squeeze and deform the metal sheet placed on the mold assembly 6, protruding into the mold to form a mechanical connection, thereby completing the riveting. When the riveting punch 4 moves upward, it will drive the side mold 661 to move outward through the drive assembly 5. At this time, the two movable molds 66 will separate due to the gap, so that the riveted workpiece will no longer be squeezed by the inside of the side mold 661, and can be directly and passively demolded. The operator can directly pick it up without having to pull it out of the mold, which improves the convenience of use and work efficiency.

[0030] Please see Figures 2-4 The drive assembly 5 includes a drive plate 51, an active groove 52 is provided on the inner side of the drive plate 51, and a slide rod 53 is fixedly installed on the inner side of the active groove 52. The drive plate 51 and the slide rod 53 are inclined relative to the riveting punch 4. The mounting base 7 has slots 8 at both ends that are adapted to the drive plate 51.

[0031] The slip ring 664 is slidably sleeved on the outer surface of the slide rod 53. The slide rod 53 is driven to move downward by the riveting punch 4. The slip ring 664 is pushed by the slide rod 53 to drive the side mold 661 to move towards the mold base 62.

[0032] In this design, the drive assembly 5 is mainly used to drive the movable mold 66 to move. Two drive plates 51 are fixed to the outer end of the riveting punch 4. The two drive plates 51 are inclined in opposite directions, so that they can form a figure-eight shape. A movable groove 52 is opened on the inner side of the drive plate 51. A slide rod 53 is fixed inside the movable groove 52. The slide rod 53 runs through the entire movable groove 52 from top to bottom. The slip ring 664 is sleeved on the outer surround of the slide rod 53, so that it can slide up and down on the outer surface of the slide rod 53. The ring 664 is rotatably mounted inside the mounting groove 663 via the rotating shaft 665, so it can rotate to make its tilt angle the same as that of the slide rod 53. When the drive plate 51 drives the slide rod 53 to move downward, since the slide rod 53 is tilted, the slip ring 664 slides on the outer surface of the slide rod 53 and is also squeezed by the slide rod 53, so that the slip ring 664 can push the side mold 661 to move. The slots 8 opened on both sides of the mounting base 7 are used to prevent the drive assembly 5 from being blocked when it moves downward.

[0033] Working principle: When the device performs riveting, the workpiece is first placed on the side mold 661, and the riveting point is aligned with the mold base 62. At this time, the riveting punch 4 can be activated to move downwards, simultaneously driving the drive assembly 5. When the drive plate 51 drives the slide rod 53 downwards, since the slide rod 53 is inclined, the slip ring 664 slides on the outer surface of the slide rod 53 and is also squeezed by the slide rod 53. This allows the slip ring 664 to push the side mold 661 to move. When the slip ring 664 is driven inwards by the drive assembly 5, When the device moves, it will cause the side mold 661 to slide along the crossbar 64 in the slide groove 63. The two side molds 661 will approach and merge with each other, and cooperate with the mold base 62 to form a complete mold. At the same time, the riveting punch 4 will also move into the through hole of the side mold 661, and squeeze and deform the metal sheet placed on the mold assembly 6, and bulge into the mold to form a mechanical connection. When the riveting punch 4 moves upward, it will drive the side mold 661 to move outward through the drive assembly 5. At this time, the two movable molds 66 will separate due to the gap, and the workpiece will be passively demolded.

Claims

1. A metal sheet riveting device, comprising a mounting frame (1), wherein a riveting machine body (2) is mounted on the top of the mounting frame (1), a hydraulic drive device (3) is mounted on the outer end of the riveting machine body (2), and a riveting punch (4) is mounted on the output end of the hydraulic drive device (3), the riveting punch (4) being driven to move up and down by the hydraulic drive device (3). characterized in that The riveting machine body (2) is fixedly installed with a mounting base (7) on the inside. The mounting base (7) is provided with a mold assembly (6) on the top. The riveting punch (4) is provided with two drive assemblies (5) on the outer end. The mold assembly (6) includes a mold base (62) and two movable molds (66). The two movable molds (66) are driven to move by the drive assembly (5), and the two movable molds (66) move in opposite directions. The mold base (62) is located between the two movable molds (66), and the two movable molds (66) cooperate with the mold base (62) to form a riveting mold.

2. The metal sheet riveting device according to claim 1, characterized in that: The mold assembly (6) also includes a fixing seat (61), which is detachably mounted on the top of the mounting seat (7). The mold base (62) is fixedly mounted on the top of the fixing seat (61), and two sliding grooves (63) are provided at the outer end of the fixing seat (61).

3. A metal sheet riveting device according to claim 2, characterized in that: Both of the slides (63) are fixedly installed with crossbars (64), and the outer ends of the crossbars (64) are fitted with telescopic springs (65).

4. The metal sheet riveting device according to claim 3, characterized in that: The movable mold (66) includes a side mold (661). Two sliding sleeves (666) are fixedly connected to the bottom end of the side mold (661). The sliding sleeves (666) are slidably connected to the crossbar (64). The two ends of the telescopic spring (65) abut against the outer ends of the two sliding sleeves (666) respectively. The side mold (661) slides in the groove (63) through the cooperation of the sliding sleeves (666) and the crossbar (64).

5. A metal sheet riveting device according to claim 4, characterized in that: The movable mold (66) also includes a slip ring (664). A connecting block (662) is fixedly connected to the outer end of the side mold (661). One end of the connecting block (662) is provided with an installation groove (663). Two rotating shafts (665) are fixedly installed inside the installation groove (663). The two sides of the slip ring (664) are rotatably connected to the two rotating shafts (665) respectively. The outer end of the side mold (661) is provided with a semi-circular through hole that matches the mold base (62).

6. A metal sheet riveting device according to claim 5, characterized in that: The drive assembly (5) includes a drive plate (51), an active groove (52) is provided on the inner side of the drive plate (51), a slide rod (53) is fixedly installed on the inner side of the active groove (52), the drive plate (51) and the slide rod (53) are inclined relative to the riveting punch (4), and slots (8) adapted to the drive plate (51) are provided at both ends of the mounting base (7).

7. A metal sheet riveting device according to claim 6, characterized in that: The slip ring (664) is slidably sleeved on the outer surface of the slide rod (53). The slide rod (53) is driven to move downward by the riveting punch (4). The slip ring (664) is pushed by the slide rod (53) to drive the side mold (661) to move towards the mold base (62).

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