Servo press machine

Abstract

The utility model discloses a kind of servo riveting machines, including riveting machine rack, the bottom of the riveting machine rack is fixedly provided with pedestal, and the front of the riveting machine rack is equipped with operating panel, while the surface of pedestal is fixed with riveting lower die, the top of the riveting machine rack is equipped with electric cylinder, and the side of electric cylinder is equipped with servo motor, while electric cylinder end is fixedly provided with bearing platform, and the output end of electric cylinder is fixedly connected with riveting upper die by bearing platform, the bottom of riveting upper die is fixedly provided with riveting head, servo motor is connected with electric cylinder by synchronous belt and synchronous wheel, the bottom of riveting upper die is provided with tool base. The servo riveting machine, using the driving riveting upper die displacement mode of electric cylinder and servo motor, replace the mode of traditional use hydraulic cylinder, when driving riveting upper die displacement, it is not affected by different seasonal ambient temperature, when riveting workpiece, it is more stable.

Description

Technical Field

[0001] This utility model relates to the field of riveting machines, specifically a servo riveting machine. Background Technology

[0002] An automatic riveting machine is a mechanical device used in riveting processes. Its principle is to press rivets and workpieces together using pressure to achieve a fixing and connection effect. In an automatic riveting machine, rivets are automatically fed from the rivet slot to the riveting position, and then pressure from a pneumatic or hydraulic system deforms the rivet head, bringing it into contact with the workpiece, thus completing the riveting process. An automatic riveting machine uses pneumatic or hydraulic pressure as a power source to press rivets into the workpiece through a riveting head. Compared to manual riveting, automatic riveting machines can improve production efficiency and reduce labor costs.

[0003] Regarding the patent for riveting machine, after searching, Chinese patent with publication number CN116274834A discloses an automatic riveting machine, which includes a hydraulic rod installed at the bottom of a second hydraulic cylinder, a riveting head installed at the bottom of the hydraulic rod, a protective cover installed on one side of a support plate, a drive motor installed inside the protective cover, a hydraulic pump installed on the top of the protective cover, and a control panel installed on one side of the top of the worktable.

[0004] Although the above-mentioned device can drive the second hydraulic cylinder to push the hydraulic rod downward to complete the riveting work with the riveting machine, in actual use, the hydraulic energy conversion efficiency is low, the energy loss is large, and the hydraulic oil is easily affected by temperature. If the riveting operation is carried out in a low-temperature workshop, such as an outdoor workshop without heating in winter or in the frigid northern regions, the viscosity of the hydraulic oil will increase significantly, resulting in increased oil flow resistance, difficulty in oil suction by the hydraulic pump, and problems such as "pressure not reaching" and "hydraulic cylinder jamming". Utility Model Content

[0005] The purpose of this invention is to provide a servo riveting machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a servo riveting machine is provided, including a riveting machine frame. A base is fixedly installed at the bottom of the riveting machine frame, and an operation panel is installed on the front of the riveting machine frame. A lower riveting die is fixedly installed on the surface of the base. An electric cylinder is installed above the riveting machine frame, and a servo motor is installed on one side of the electric cylinder. A support is fixedly installed at the end of the electric cylinder, and the output end of the electric cylinder passes through the support and is fixedly connected to an upper riveting die. A riveting head is fixedly installed at the bottom of the upper riveting die. The servo motor is connected to the electric cylinder through a synchronous belt and a synchronous pulley. A tooling base is provided at the bottom of the upper riveting die, and a U-shaped handle is fixedly installed at the end of the tooling base.

[0007] Furthermore, the support is fixedly connected inside the frame of the riveting machine, and the support and the lower riveting die are arranged in parallel. Four sets of guide rods are evenly installed between the frame of the riveting machine and the lower riveting die.

[0008] Furthermore, an upper riveting die is movably arranged between the support platform and the lower riveting die. Two sets of guide holes are opened on both sides of the upper riveting die, and the guide rod is inserted into the guide hole. The upper riveting die is driven to move downward by an electric cylinder and a servo motor, and the workpiece installed on the surface of the tooling base is riveted and fixed by the riveting head at the bottom of the upper riveting die.

[0009] Furthermore, slides are fixedly installed on both sides of the bottom of the tooling base, and slide rails are screwed onto both sides of the surface of the riveting die. The dimensions of the slide rails and slides are matched, and the slides are slidably disposed inside the slide rails.

[0010] Furthermore, the tooling base also includes a positioning groove formed on its surface, a wire groove is formed on one side of the positioning groove, and a base is fixedly set inside the positioning groove. An electromagnetic chuck is fixedly set on the surface of the base, and the upper end face of the electromagnetic chuck is flush with the upper end face of the tooling base.

[0011] Furthermore, the positioning groove, base, and electromagnetic chuck are all circular. The electromagnetic chuck is located at the center of the tooling base and is fixed with bolts. The wire harness at the end of the electromagnetic chuck is inserted inside the wire groove.

[0012] Furthermore, the base is provided with three sets of positioning holes at equal intervals, and three sets of positioning seats are installed at equal intervals at the bottom of the positioning groove near the side wall. The size of the positioning seats and the positioning holes are matched, and the positioning seats are inserted into the inside of the positioning holes. Both the positioning seats and the positioning holes are arc-shaped.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This solution uses a servo motor as the power source, which is connected to the electric cylinder via a synchronous belt and synchronous pulley to form a power transmission system. When the servo motor is running, it transmits power to the electric cylinder through the synchronous belt and synchronous pulley, driving the lead screw electric cylinder to move forward and backward, which in turn drives the riveting die mounted on the electric cylinder to move up and down, completing the riveting and stamping actions. The method of using the electric cylinder and servo motor to drive the riveting die to move is different from the traditional method of using hydraulic cylinders. When driving the riveting die to move, it is not affected by the ambient temperature of different seasons, and it is more stable when riveting workpieces.

[0015] 2. After the electromagnetic chuck is installed in place, its upper surface is flush with the upper surface of the fixture base, ensuring that the workpiece to be riveted placed on the fixture base has a flat and stable support surface. During the actual riveting process, the workpiece to be riveted is placed on the fixture base, and the electromagnetic chuck can generate a strong adsorption force on different workpieces with flat bottoms, firmly fixing the workpiece to the fixture base. The use of magnetic adsorption fixation method greatly improves the stability and adaptability of the workpiece during the riveting process, effectively avoiding the loosening of the workpiece during riveting, thereby ensuring the smooth progress of the riveting process and the stability of the riveting quality. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the riveting machine of this utility model;

[0018] Figure 3 This is a schematic diagram of the riveting upper mold and its connection structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the structural tooling base and its connection structure of this utility model;

[0020] Figure 5 This is a front view of the structural tooling base of this utility model;

[0021] Figure 6 This is a side view of the structural tooling base of this utility model;

[0022] Figure 7 This is a cross-sectional view of the structural tooling base of this utility model;

[0023] Figure 8 This is a schematic diagram of the electromagnetic chuck of this utility model installed inside the positioning groove.

[0024] The following are the labels in the diagram: 1. Electric cylinder; 11. Servo motor; 12. Support platform; 2. Riveting machine frame; 21. Control panel; 22. Machine base; 23. Lower riveting die; 3. Upper riveting die; 4. Guide rod; 5. Tooling base; 50. U-shaped handle; 51. Positioning groove; 52. Wire groove; 53. Positioning seat; 54. Electromagnetic chuck; 55. Base; 56. Positioning hole; 6. Slide table; 7. Slide rail. Detailed Implementation

[0025] Please see Figure 1-8This utility model provides a servo riveting machine, including a riveting machine frame 2, a base 22 fixedly installed at the bottom of the riveting machine frame 2, and an operation panel 21 installed on the front of the riveting machine frame 2. At the same time, a lower riveting die 23 is fixedly installed on the surface of the base 22. An electric cylinder 1 is installed above the riveting machine frame 2, and a servo motor 11 is installed on one side of the electric cylinder 1. At the same time, a support platform 12 is fixedly installed at the end of the electric cylinder 1, and the output end of the electric cylinder 1 passes through the support platform 12 and is fixedly connected to an upper riveting die 3. A riveting head is fixedly installed at the bottom of the upper riveting die 3. The servo motor 11 is connected to the electric cylinder 1 through a synchronous belt and a synchronous pulley. A tooling base 5 is installed at the bottom of the upper riveting die 3, and a U-shaped handle 50 is fixedly installed at the end of the tooling base 5.

[0026] During operation, the operator manually uses the U-shaped handle 50 to push the tooling base 5 to move it into the pressing space at the bottom of the riveting upper die 3. Then, the start button is pressed, causing the riveting upper die 3 to descend and reach the workpiece riveting position. Before pressing the start button, the operator must ensure that all parts of themselves and others are outside the equipment's working area to prevent accidental collisions during startup and avoid personal injury or equipment malfunction. Furthermore, the operator must constantly monitor the equipment's operating status; if any abnormality is detected, the emergency stop button should be pressed immediately to stop the equipment and investigate the cause.

[0027] The servo control system, according to a preset program, controls the riveting upper die 3 to press down on the workpiece, completing the riveting process between the rivet and the workpiece. During the riveting process, the operator must not leave the operating position without authorization and should closely observe the riveting situation. If any abnormal riveting problem is found, the equipment operation must be stopped immediately, and the process parameters must be adjusted or the die must be checked for damage. At the same time, it is strictly forbidden to perform any debugging or maintenance operations while the equipment is running. If adjustments are required, the equipment operation must be stopped first, and the equipment must be ensured to be in a safe shutdown state. After the riveting is completed, the riveting upper die 3 rises and returns to its initial position. The tooling base 5 is manually pulled back and reset. The operator then removes the riveted workpiece, completing one riveting operation.

[0028] During the riveting process, the pressure sensor continuously collects riveting force data and converts it into an electrical signal, which is then fed back to the control system. The control system compares and analyzes the real-time pressure data with preset parameters. If the pressure value exceeds or falls below the set range, it immediately adjusts the speed and torque of the servo motor 11, thereby changing the motion state of the electric cylinder 1 and the downward pressure of the riveting die 3, ensuring that the riveting process remains in a precise and controllable state. When the preset riveting depth or pressure requirement is reached, the control system controls the servo motor 11 to reverse, and the electric cylinder 1 drives the riveting die 3 back to its initial position. The operator manually pulls back the tooling base 5, removes the riveted workpiece, and completes one work cycle. The method of using the electric cylinder 1 and the servo motor 11 to drive the riveting die 3 to move replaces the traditional method of using hydraulic cylinders. When driving the riveting die 3 to move, it is not affected by the ambient temperature of different seasons, making the riveting of workpieces more stable.

[0029] The tooling base 5 has a positioning groove 51 inside. The electromagnetic chuck 54 is inserted into the three positioning seats 53 set inside the positioning groove 51 through three sets of positioning holes 56 at the bottom. At the same time, the upper end surface of the electromagnetic chuck 54 is flush with the upper end surface of the tooling base 5, which can adsorb and fix different workpieces with flat bottoms, ensuring that the workpieces will not loosen during riveting.

[0030] In a preferred embodiment, the support 12 is fixedly connected inside the frame 2 of the riveting machine, and the support 12 and the riveting die 23 are arranged in parallel. Four sets of guide rods 4 are evenly installed between the frame 2 of the riveting machine and the riveting die 23.

[0031] A riveting upper die 3 is movably arranged between the support 12 and the riveting lower die 23. Two sets of guide holes are opened on both sides of the riveting upper die 3, and the guide rod 4 is inserted into the guide hole. The riveting upper die 3 is driven to move downward by the electric cylinder 1 and the servo motor 11, and the workpiece installed on the surface of the tooling base 5 is riveted and fixed by the riveting head at the bottom of the riveting upper die 3.

[0032] The tooling base 5 has slides 6 fixedly installed on both sides of the bottom. The surface of the riveting die 23 is screwed with slide rails 7. The slide rails 7 and slides 6 are matched in size, and the slides 6 are slidably installed inside the slide rails 7.

[0033] In a preferred embodiment, the tooling base 5 also includes a positioning groove 51 formed on its surface. A wire groove 52 is formed on one side of the positioning groove 51. Meanwhile, a base 55 is fixedly arranged inside the positioning groove 51. An electromagnetic chuck 54 is fixedly arranged on the surface of the base 55. The upper end face of the electromagnetic chuck 54 is flush with the upper end face of the tooling base 5.

[0034] The positioning groove 51, the base 55 and the electromagnetic chuck 54 are all circular. The electromagnetic chuck 54 is set at the center of the tooling base 5 and fixed with bolts. The wire harness at the end of the electromagnetic chuck 54 is inserted into the wire groove 52.

[0035] Three sets of positioning holes 56 are equally spaced on the base 55. Three sets of positioning seats 53 are equally spaced at the bottom of the positioning groove 51 near the side wall. The size of the positioning seat 53 and the positioning hole 56 are matched. The positioning seat 53 is inserted into the inside of the positioning hole 56. Both the positioning seat 53 and the positioning hole 56 are arc-shaped.

[0036] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown: The positioning groove 51 inside the tooling base 5 can precisely mate with the three sets of positioning holes 56 on the bottom of the electromagnetic chuck 54, and a stable insertion is achieved through the positioning seat 53, ensuring the accuracy and stability of the installation of the electromagnetic chuck 54. When the electromagnetic chuck 54 is installed in place, its upper surface is flush with the upper surface of the tooling base 5, ensuring that the workpiece to be riveted placed on the tooling base 5 can obtain a flat and stable support surface. In the actual riveting process, the workpiece to be riveted is placed on the tooling base 5, and the electromagnetic chuck 54 can generate a strong adsorption force on different workpieces with flat bottoms, firmly fixing the workpiece to the tooling base 5. The magnetic adsorption fixing method greatly improves the stability and adaptability of the workpiece during the riveting process, effectively avoiding the loosening of the workpiece during riveting, thereby ensuring the smooth progress of the riveting process and the stability of the riveting quality. Compared with the traditional fixing method, this design not only improves work efficiency, but also reduces riveting defects caused by workpiece loosening, reduces the defect rate, and saves production costs for enterprises.

[0037] Working principle: such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the riveting machine frame 2 serves as the main support structure of the equipment, providing an installation foundation for other components and ensuring their stable operation. In the power transmission system, the servo motor 11 acts as the power source, connected to the electric cylinder 1 via a synchronous belt and synchronous pulley, forming a power transmission system. When the servo motor 11 operates, it transmits power to the electric cylinder 1 via the synchronous belt and synchronous pulley, driving the lead screw electric cylinder 1 to move forward and backward, thereby driving the riveting upper die 3 mounted on the electric cylinder 1 to move up and down, completing the riveting and stamping actions. The riveting upper die 3 and the riveting lower die 23 form a mold system. The workpiece to be riveted is placed on the tooling base 5, and the riveting upper die 3 moves downward to rivet the workpiece on the tooling base 5. The riveting upper die 3 is equipped with an anti-hand-pressing protection device, which works in conjunction with the safety protection system. Anti-hand-pressing protection devices are installed on both sides of the riveting machine frame 2, and these devices are electrically connected to the control system. When a finger or other object is detected entering the riveting or stamping area, a signal is immediately sent to the control system, which controls the motor to stop moving or reverse, causing the upper die to automatically retract, ensuring the safety of the workers.

Claims

1. A servo riveting machine, comprising a riveting machine frame (2), characterized in that: The bottom of the riveting machine frame (2) is fixedly provided with a base (22), and the front of the riveting machine frame (2) is provided with an operation panel (21). At the same time, the surface of the base (22) is fixedly provided with a riveting lower die (23). An electric cylinder (1) is installed above the riveting machine frame (2), and a servo motor (11) is installed on one side of the electric cylinder (1). At the same time, a support platform (12) is fixedly provided at the end of the electric cylinder (1), and the output end of the electric cylinder (1) passes through the support platform (12) and is fixedly connected to the riveting upper die (3). A riveting head is fixedly provided at the bottom of the riveting upper die (3). The servo motor (11) is connected to the electric cylinder (1) through a synchronous belt and a synchronous pulley. A tooling base (5) is provided at the bottom of the riveting upper die (3), and a U-shaped handle (50) is fixedly provided at the end of the tooling base (5).

2. The servo riveting machine according to claim 1, characterized in that: The support platform (12) is fixedly connected inside the frame (2) of the riveting machine, and the support platform (12) and the riveting lower die (23) are arranged in parallel. Four sets of guide rods (4) are evenly installed between the frame (2) of the riveting machine and the riveting lower die (23).

3. A servo riveting machine according to claim 2, characterized in that: A riveting upper mold (3) is movably arranged between the support platform (12) and the riveting lower mold (23). Two sets of guide holes are opened on both sides of the riveting upper mold (3), and the guide rod (4) is inserted into the guide hole. The riveting upper mold (3) is driven to move downward by the electric cylinder (1) and the servo motor (11), and the workpiece installed on the surface of the tooling base (5) is riveted and fixed by the riveting head at the bottom of the riveting upper mold (3).

4. A servo riveting machine according to claim 3, characterized in that: The tooling base (5) has slides (6) fixedly installed on both sides of the bottom. The surface of the riveting mold (23) is screwed with slide rails (7). The slide rails (7) and slides (6) are matched in size. The slides (6) are slidably installed inside the slide rails (7).

5. A servo riveting machine according to claim 4, characterized in that: The tooling base (5) also includes a positioning groove (51) formed on its surface. A wire groove (52) is formed on one side of the positioning groove (51). At the same time, a base (55) is fixedly set inside the positioning groove (51). An electromagnetic chuck (54) is fixedly set on the surface of the base (55). The upper end face of the electromagnetic chuck (54) is flush with the upper end face of the tooling base (5).

6. A servo riveting machine according to claim 5, characterized in that: The positioning groove (51), base (55) and electromagnetic chuck (54) are all circular. The electromagnetic chuck (54) is set at the center of the tooling base (5) and fixed with bolts. The wire harness at the end of the electromagnetic chuck (54) is inserted into the wire groove (52).

7. A servo riveting machine according to claim 6, characterized in that: The base (55) has three sets of positioning holes (56) equidistantly spaced. The bottom of the positioning groove (51) is equipped with three sets of positioning seats (53) equidistantly spaced near the side wall. The size of the positioning seat (53) and the positioning hole (56) are matched. The positioning seat (53) is inserted into the inside of the positioning hole (56). Both the positioning seat (53) and the positioning hole (56) are arc-shaped.

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