Multi-station automatic squeeze riveter

Abstract

The utility model relates to the technical field of squeeze riveters, and discloses a multi-station automatic squeeze riveter which comprises a workbench, one side of the top of the workbench is provided with an inflation mechanism, the top of the inflation mechanism is provided with a feeding assembly, the other side of the top of the workbench is fixedly connected with a mounting plate, the front side of the mounting plate is provided with a sliding rail, and the sliding rail is fixedly connected with the workbench. A telescopic push rod is slidably connected into the sliding rail, a bearing plate is fixedly connected to the bottom of the telescopic push rod, two first inner grooves are symmetrically formed in the bearing plate, an upper mold is placed in the first inner grooves, and a fixing assembly is arranged in the bearing plate. According to the utility model, through a multi-station feeding and magnetic adsorption installation mode, the rapid replacement of the upper die is realized, and the rivet pressing efficiency is improved; and the lower die drives the linkage clamping mechanism to automatically disassemble the upper die, the structure is compact, disassembly and assembly are convenient, the die replacement efficiency and installation stability are effectively improved, and the multi-model riveting requirement is met.

Description

Technical Field

[0001] This utility model relates to the field of riveting machine technology, and in particular to a multi-station automatic riveting machine. Background Technology

[0002] Currently, riveting machines are widely used in sheet metal processing, precision assembly, and other industrial fields. They are primarily used to quickly embed riveted parts into metal sheets using pressure to achieve structural connections and component fixation. Traditional riveting machines have a simple structure, rely on manual operation, and are suitable for repetitive processing of single-model parts. As the manufacturing industry's demands for efficiency and flexibility continue to increase, multi-functional and automated riveting equipment is gradually becoming the industry trend. Against this backdrop, riveting machines integrating multi-station operation, rapid mold change, and automatic feeding functions have become a key research focus.

[0003] Existing multi-station automatic riveting equipment mainly achieves multi-model riveting tasks by arranging multiple upper and lower die components on the worktable and coordinating with a lateral movement mechanism to switch working positions. During operation, the upper die is fixed at each station, and riveting work is completed at different positions by moving the workpiece or the pressure head. Feeding generally adopts a vibratory feeder and pipeline linkage method, using compressed air to convey the riveting parts to the riveting area. Die replacement relies on manual installation, and some models are completed with the assistance of tools. The overall structure is mainly rigidly connected, emphasizing stability and riveting accuracy.

[0004] However, existing multi-station riveting equipment has many limitations in practical use. First, most equipment has rigidly fixed molds, lacking an effective rapid switching mechanism, often requiring long downtimes to change molds when dealing with different riveted parts. Second, mold installation is mostly done manually, with cumbersome steps, low efficiency, and risks of incorrect installation or displacement. Third, current structures generally lack automatic disassembly mechanisms; the upper mold relies on external force to pull it out, increasing manpower and easily causing mold damage. Fourth, regarding mold stability, traditional upper molds rely on bolts or slots for fixation, which are prone to loosening during vibration or high-frequency switching, reducing repeatability and positioning accuracy. Therefore, there is an urgent need for a riveting equipment with rapid disassembly and assembly, safe clamping, stable feeding, and multi-station collaborative operation capabilities to adapt to diverse assembly needs under complex working conditions.

[0005] To address the above problems, a multi-station automatic riveting machine is proposed. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a multi-station automatic riveting machine, which aims to solve the problems of rapid mold switching and upper mold clamping accuracy in existing multi-station automatic riveting machines.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a multi-station automatic riveting machine, comprising a worktable, an inflation mechanism on one side of the top of the worktable, a feeding component on the top of the inflation mechanism, a mounting plate fixedly connected to the other side of the top of the worktable, a pressing cylinder fixedly connected to the front of the mounting plate, a slide rail on the front of the mounting plate, a telescopic push rod slidably connected inside the slide rail, a load-bearing plate fixedly connected to the bottom of the telescopic push rod, two first inner grooves symmetrically opened inside the load-bearing plate, an upper mold placed inside the first inner groove, a fixing component inside the load-bearing plate, the fixing component comprising a force-bearing plate, a wedge block fixedly connected to the bottom of the force-bearing plate, a limiting plate sleeved on the outer side of the wedge block, and multiple springs fixedly connected to the bottom of the limiting plate, two side push rods symmetrically arranged inside the load-bearing plate, and a rotating rod rotatably connected to the opposite ends of the two push rods, a side clamping block rotatably connected to the top of the rotating rod.

[0008] As a further description of the above technical solution:

[0009] A second inner groove is formed at the center of the first inner groove, a third inner groove is formed at the bottom of the second inner groove, and a fourth inner groove is symmetrically formed inside the load-bearing plate.

[0010] As a further description of the above technical solution:

[0011] The force-bearing plate, wedge block, and limiting plate are all slidably connected inside the load-bearing plate, and the bottom two sides of the wedge block are inclined and fit against the end face of the side push rod.

[0012] As a further description of the above technical solution:

[0013] A limiting plate 2 is sleeved on the outer side of the middle part of the side push rod. The limiting plate 2 is slidably connected to the inside of the load-bearing plate, and multiple springs 2 are provided on the outer side of the limiting plate 2.

[0014] As a further description of the above technical solution:

[0015] The bottom of the rotating rod is perpendicular to the end of the side push rod, and a rotating shaft is provided in the middle of the rotating rod. The rotating rod is rotatably connected inside the fourth inner groove.

[0016] As a further description of the above technical solution:

[0017] The side clamps are perpendicular to the top of the rotating rod, and the side clamps are slidably connected to the inside of the side wall of the load-bearing plate.

[0018] As a further description of the above technical solution:

[0019] A lower mold is provided directly below the lower cylinder, and a pad is provided at the bottom of the lower mold.

[0020] As a further description of the above technical solution:

[0021] The feeding assembly includes a vibratory feeder, the output end of which is equipped with a storage device. The input end of the storage device is connected to the output port of the inflation mechanism via an air supply line, and the output end of the storage device is fixedly connected to a feeding pipe.

[0022] As a further description of the above technical solution:

[0023] The end of the feeding pipe away from the storage container is fixedly connected to a discharge plate, and a clamp is provided at the bottom of the discharge plate.

[0024] As a further description of the above technical solution:

[0025] A foot pedal controller is provided on the front side of the workbench, a pressing rod is provided at the bottom of the pressing cylinder, and a limit cylinder is slidably connected to the top of the pressing cylinder.

[0026] This utility model has the following beneficial effects:

[0027] 1. In this utility model, the riveting machine adopts a multi-station feeding method to speed up the work efficiency. A telescopic push rod and a load-bearing plate are set on one side of the pressing cylinder, and two different types of upper dies are placed on the load-bearing plate. Different upper dies can be installed by controlling the pressing rod through the slide rail. The pressing rod is magnetically attracted to install the upper dies, reducing the installation steps.

[0028] 2. In this utility model, when the upper mold of the magnetic adsorption needs to be replaced, the lower pressure rod is aligned with the first inner groove, driving the lower mold to contact the force plate in the first inner groove. As the lower mold descends, the wedge block at the bottom of the force plate moves down, pushing the two side push rods on both sides to move, thereby causing the two rotating rods to rotate and driving the two side clamping blocks in the first inner groove to slide out and effectively clamp the upper mold. When the clamping force is greater than the magnetic force between the lower pressure rod and the upper mold, the upper mold is successfully removed after the lower pressure rod resets. This not only achieves quick disassembly of the upper mold, but also ensures the stability of the upper mold on the load-bearing plate, facilitating the next installation. Attached Figure Description

[0029] Figure 1 This is a three-dimensional schematic diagram of a multi-station automatic riveting machine proposed in this utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the lower pressure rod of a multi-station automatic riveting machine proposed in this utility model;

[0031] Figure 3This is a schematic diagram of the upper mold of a multi-station automatic riveting machine proposed in this utility model;

[0032] Figure 4 This is a schematic diagram of the side clamping block of a multi-station automatic riveting machine proposed in this utility model.

[0033] Legend:

[0034] 1. Workbench; 2. Inflating mechanism; 3. Feeding assembly; 31. Vibratory feeder; 32. Storage container; 33. Air supply line; 34. Feeding pipe; 4. Pressing cylinder; 41. Pressing rod; 5. Limiting cylinder; 6. Slide rail; 7. Telescopic push rod; 8. Foot pedal controller; 9. Load-bearing plate; 91. First inner groove; 92. Second inner groove; 93. Third inner groove; 94. Fourth inner groove; 10. Discharge plate; 11. Clamp; 12. Pad block; 13. Lower mold; 14. Upper mold; 15. Fixing assembly; 1501. Force plate; 1502. Wedge block; 1503. Limiting plate one; 1504. Spring one; 1505. Side push rod; 1506. Limiting plate two; 1507. Spring two; 1508. Rotating rod; 1509. Rotating shaft; 1510. Side clamping block. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Reference Figure 1 - Figure 4This utility model provides an embodiment of a multi-station automatic riveting machine, including a workbench 1. An inflation mechanism 2 is installed on one side of the top of the workbench 1. The output end of the inflation mechanism 2 is connected to the input end of the storage tank 32 of the feeding assembly 3 via an air supply line 33, providing compressed gas to transport materials and further improving feeding efficiency. A foot pedal controller 8 is installed on the front side of the workbench 1 to control the start and stop of the pressing action, facilitating flexible control by the operator during workpiece loading and unloading. A mounting plate is fixedly connected to the top of the other side of the workbench 1. A pressing cylinder 4 is installed on the front side of the mounting plate to drive a pressing rod 41 to achieve the riveting action. A limit cylinder 5 is slidably connected to the top of the pressing cylinder 4 to limit the stroke of the pressing rod 41. A lower die 13 is installed directly below the pressing cylinder 4. A pad 12 is installed at the bottom of the lower die 13 to support the workpiece and buffer the riveting force, and allows for quick replacement of the lower die 13. The front side of the mounting plate is also equipped with a slide rail 6, and a telescopic push rod 7 is slidably connected inside the slide rail 6. This allows the rod to move left and right along the slide rail 6 to switch between different riveting positions. A load-bearing plate 9 is fixedly connected to the bottom of the telescopic push rod 7. The load-bearing plate 9 has two symmetrically formed first inner grooves 91 for placing multiple upper molds 14 of different specifications. A second inner groove 92 is further formed at the center of each first inner groove 91, and a third inner groove 93 is formed at its bottom, providing space for the clamping mechanism. To achieve the clamping and fixing function, two symmetrically formed fourth inner grooves 94 are also provided inside the load-bearing plate 9 for the movable arrangement of the rotating rod 1508 structure. A fixing component 15 is provided inside the load-bearing plate 9 to stably clamp the upper mold 14 placed inside the first inner groove 91.

[0037] Reference Figure 3 - Figure 4The fixing assembly 15 mainly consists of a force-bearing plate 1501, a wedge block 1502, a first limiting plate 1503, a first spring 1504, a side push rod 1505, a second limiting plate 1506, a second spring 1507, a rotating rod 1508, a rotating shaft 1509, and a side clamping block 1510. The force-bearing plate 1501 is located in the bottom center area of ​​the first inner groove 91, and the wedge block 1502 is fixedly connected to its bottom. The first limiting plate 1503 is sleeved on the outside of the wedge block 1502. The bottom of the first limiting plate 1503 is elastically supported inside the load-bearing plate 9 by multiple springs 1504, realizing the automatic reset of the wedge block 1502. The force-bearing plate 1501, the wedge block 1502, and the first limiting plate 1503 are all slidably assembled inside the load-bearing plate 9 to ensure their linkage movement in the vertical direction. When the downward pressure cylinder 4 drives the downward pressure rod 41 to move the upper mold 14 downward and contact the force plate 1501, the force plate 1501 is forced to move downward, and the wedge block 1502 slides downward accordingly. The bottom sides of the wedge block 1502 are designed with symmetrical inclined surfaces, which can simultaneously press the ends of the two side push rods 1505, thereby moving the side push rods 1505 horizontally to both sides. To enhance the stability of the side push rods 1505 during the guiding process, a limiting plate 2 1506 is sleeved on the outer side of its middle part. The limiting plate 2 1506 is slidably connected to the inner wall of the load-bearing plate 9, and multiple springs 2 1507 are provided on the outer side to realize the automatic reset function of the side push rod. Each side push rod 1505 has its end away from the wedge block 1502 rotatably connected to the lower end of the rotating rod 1508. The rotating rod 1508 has a rotating shaft 1509 in the middle and is rotatably mounted in the fourth inner groove 94 provided in the load-bearing plate 9, so that the rotating rod 1508 can rotate smoothly around the rotating shaft 1509. The upper end of the rotating rod 1508 is rotatably connected to the inner side of the side clamping block 1510 and is arranged vertically. The side clamping block 1510 is slidably installed inside the side wall of the load-bearing plate 9 and can slide horizontally under the drive of the rotating rod 1508 to clamp the upper mold 14 inward. When the two rotating rods 1508 rotate simultaneously, the two side clamping blocks 1510 slide inward from the groove, applying a clamping force to the upper mold 14 placed in the first inner groove 91. Once the clamping force is greater than the magnetic attraction strength between the lower pressure rod 41 and the upper mold 14, the upper mold 14 can be stably retained on the load-bearing plate 9 after the lower pressure rod 41 rises and resets.

[0038] Reference Figure 1 - Figure 2The feeding assembly 3 includes multiple vibratory feeders 31, which can be used to arrange and initially convey different bulk riveting parts in an orderly manner. Its output end is connected to a storage container 32, which temporarily stores materials. Its input end is connected to the output port of the inflation mechanism 2 via an air supply line 33. A feeding pipe 34 is fixedly connected to the output end of the storage container 32, using compressed gas to quickly and stably convey the riveting parts into the feeding pipe 34, preventing material jamming and improving feeding smoothness. A discharge plate 10 is fixedly connected to the end of the feeding pipe 34 away from the storage container 32. A clamp 11 is provided at the bottom of the discharge plate 10, which accurately grasps and positions the riveting parts conveyed by the feeding pipe 34, ensuring that the riveting parts are in the accurate riveting position before pressing, effectively improving the riveting quality and stability.

[0039] Working principle: The operator first starts the equipment via foot pedal controller 8, and inflation mechanism 2 starts running, providing air source to feeding assembly 3. Compressed gas is delivered to storage tank 32 through air supply line 33. Vibrating plate 31 aligns the bulk riveted parts and sends them into storage tank 32. They are then sent to discharge plate 10 via feeding pipe 34 and clamped and positioned by clamp 11, completing the feeding process. At this time, pressing cylinder 4 drives pressing rod 41 to move downward in the vertical direction to perform riveting operation. If it is necessary to change the upper mold 14 model, slide rail 6 drives telescopic push rod 7 to move laterally to the designated position. Two upper molds 14 are pre-installed on the load-bearing plate 9 at the bottom of telescopic push rod 7 and are placed in the first inner groove 91 respectively. The pressing rod 41 is connected to one of the upper molds 14 by magnetic adsorption, thus completing the installation of the upper mold 14. When the upper mold 14 needs to be replaced, the pressing rod 41 moves downward in alignment with the first inner groove 91, so that the upper mold 14 contacts the force plate 1501. The force plate 1501 presses down, causing the wedge block 1502 to slide down. The inclined surface of the wedge block 1502 pushes the two side push rods 1505 to move outward. The side push rods 1505 drive the connected rotating rod 1508 to rotate. The side clamping block 1510 at the top of the rotating rod 1508 slides along the side wall of the load-bearing plate 9 to clamp the upper mold 14, thus realizing the fixing and disassembly of the upper mold 14. Subsequently, the pressing rod 41 rises and resets, and the original upper mold 14 is retained on the load-bearing plate 9.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-station automatic riveting machine, comprising a worktable (1), characterized in that: An inflation mechanism (2) is provided on one side of the top of the workbench (1), and a feeding assembly (3) is provided on the top of the inflation mechanism (2). An installation plate is fixedly connected to the other side of the top of the workbench (1). A pressing cylinder (4) is fixedly connected to the front of the installation plate. A slide rail (6) is provided on the front of the installation plate. A telescopic push rod (7) is slidably connected inside the slide rail (6). A load-bearing plate (9) is fixedly connected to the bottom of the telescopic push rod (7). Two first inner grooves (91) are symmetrically opened inside the load-bearing plate (9), and an upper mold (14) is placed inside the first inner groove (91). (9) is provided with a fixing component (15), which includes a force plate (1501). A wedge block (1502) is fixedly connected to the bottom of the force plate (1501). A limiting plate (1503) is sleeved on the outside of the wedge block (1502). A plurality of springs (1504) are fixedly connected to the bottom of the limiting plate (1503). Two side push rods (1505) are symmetrically arranged inside the load-bearing plate (9). A rotating rod (1508) is rotatably connected to the opposite end of the two. A side clamping block (1510) is rotatably connected to the top of the rotating rod (1508).

2. The multi-station automatic riveting machine according to claim 1, characterized in that: A second inner groove (92) is provided at the center of the first inner groove (91), a third inner groove (93) is provided at the bottom of the second inner groove (92), and a fourth inner groove (94) is symmetrically provided inside the load-bearing plate (9).

3. The multi-station automatic riveting machine according to claim 1, characterized in that: The force plate (1501), wedge block (1502) and limiting plate (1503) are all slidably connected inside the load-bearing plate (9), and the bottom sides of the wedge block (1502) are both inclined and fit against the end face of the side push rod (1505).

4. The multi-station automatic riveting machine according to claim 1, characterized in that: The side push rod (1505) is fitted with a limiting plate two (1506) on the outer side of the middle part. The limiting plate two (1506) is slidably connected to the inside of the load-bearing plate (9), and multiple springs two (1507) are provided on the outer side of the limiting plate two (1506).

5. A multi-station automatic riveting machine according to claim 2, characterized in that: The bottom of the rotating rod (1508) is perpendicular to the end of the side push rod (1505), and a rotating shaft (1509) is provided in the middle of the rotating rod (1508). The rotating rod (1508) is rotatably connected to the inside of the fourth inner groove (94).

6. The multi-station automatic riveting machine according to claim 1, characterized in that: The side clamp (1510) is perpendicular to the top of the rotating rod (1508), and the side clamp (1510) is slidably connected to the inside of the side wall of the load-bearing plate (9).

7. The multi-station automatic riveting machine according to claim 1, characterized in that: A lower mold (13) is provided directly below the lower cylinder (4), and a pad (12) is provided at the bottom of the lower mold (13).

8. The multi-station automatic riveting machine according to claim 1, characterized in that: The feeding assembly (3) includes a vibratory feeder (31), the output end of which is provided with a storage device (32), the input end of which is connected to the output port of the inflation mechanism (2) via an air supply line (33), and the output end of which is fixedly connected with a feeding pipe (34).

9. A multi-station automatic riveting machine according to claim 8, characterized in that: The end of the feeding pipe (34) away from the storage container (32) is fixedly connected to the discharge plate (10), and the bottom of the discharge plate (10) is provided with a clamp (11).

10. A multi-station automatic riveting machine according to claim 1, characterized in that: A foot pedal controller (8) is provided on the front side of the workbench (1), a pressing rod (41) is provided at the bottom of the pressing cylinder (4), and a limit cylinder (5) is slidably connected to the top of the pressing cylinder (4).

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