A cylinder for stamping

Abstract

A stamping cylinder includes: a cylinder body, an impact transmission mechanism, a positioning and holding assembly, an automatic coding machine, and a clamping arm. The impact transmission mechanism is internally connected to the cylinder body, the positioning and holding assembly is internally connected to the cylinder body, the automatic coding machine is connected to the clamping arm, and the clamping arm is connected to the upper part of the cylinder body. The positioning and holding assembly includes: a housing guide groove, a first needle roller bearing, a second needle roller bearing, and a connecting block. Compared with traditional technologies, this invention, by adding a positioning and holding assembly and employing a clamping and air-locking mechanism, ensures reliable positioning of the mechanism, avoids stamping deviations caused by external force interference, improves marking consistency and production safety, and reduces manual intervention for character mold replacement and calibration, thereby reducing operational complexity and time costs.

Description

Technical Field

[0001] This utility model relates to the field of cylinders, specifically to a cylinder for stamping steel marks. Background Technology

[0002] In the production process of automobile body-in-white, the stamping cylinder is a key piece of equipment for stamping permanent markings such as serial numbers and traceability codes. Through pneumatic drive and in conjunction with a letter mold mechanism, it imprints clearly legible characters on the metal surface of the car body, providing a foundation for product traceability and quality control.

[0003] Currently, traditional stamping cylinders mainly consist of a pneumatic cylinder body, a transmission mechanism, and a simple letter mold. The linear motion of the cylinder piston rod drives the letter mold to impact the workpiece surface to complete the stamping. Its core working logic is to use the impact force provided by compressed air to cause plastic deformation of the letter mold on the workpiece surface. However, existing equipment has limitations in adapting to production scenarios: it can only set a fixed serial number for the workpiece. When the letter mold parameters need to be changed, the machine must be stopped to replace the letter mold assembly, causing production line interruptions.

[0004] To address the aforementioned issues, we have made a series of improvements. Utility Model Content

[0005] The purpose of this invention is to provide a stamping cylinder to overcome the aforementioned shortcomings and deficiencies of the prior art.

[0006] A stamping cylinder includes: a cylinder body, an impact transmission mechanism, a positioning and holding assembly, an automatic coding machine, and a clamping arm. The impact transmission mechanism is internally connected to the cylinder body, the positioning and holding assembly is internally connected to the cylinder body, the automatic coding machine is connected to the clamping arm, and the clamping arm is connected to the upper part of the cylinder body.

[0007] The positioning and holding assembly includes a housing guide groove, a first needle roller bearing, a second needle roller bearing, and a connecting block. The housing guide groove is located inside the cylinder body. The first needle roller bearing is connected to the front side of the connecting block, and the second needle roller bearing is connected to the rear side of the connecting block. The connecting block is connected to the clamping arm through the first needle roller bearing, and the connecting block is connected to the impact transmission mechanism through the second needle roller bearing.

[0008] Furthermore, the cylinder body includes: a cylinder barrel, a push block, and a housing. The cylinder barrel is connected to the lower end of the housing, the push block is connected to the top of the housing, and a housing guide groove is provided inside the housing.

[0009] Furthermore, the impact transmission mechanism includes: a cylinder piston rod, a crank connecting rod lever assembly, a piston, and a rotating pin. The lower end of the cylinder piston rod is connected to the piston, the piston is connected to the inside of the cylinder, the upper end of the cylinder piston rod is connected to the crank connecting rod lever assembly and the positioning and retaining assembly, the crank connecting rod lever assembly is connected to the positioning and retaining assembly, the crank connecting rod lever assembly is connected to the inside of the housing, and the rotating pin is connected to the housing and the clamping arm.

[0010] The beneficial effects of this utility model are:

[0011] Compared with traditional technologies, this utility model ensures reliable positioning of the mechanism by adding a positioning and holding component and a clamping and air-locking mechanism, avoiding engraving deviations caused by external force interference, improving the consistency of markings and production safety, while reducing manual intervention for character mold replacement and calibration, and reducing operational complexity and time costs. Attached image description:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure label:

[0014] The cylinder body 100, cylinder barrel 110, push block 120 and outer shell 130.

[0015] Impact transmission mechanism 200, cylinder piston rod 210, crank connecting rod lever assembly 220, piston 230 and rotating pin 240.

[0016] Positioning and retaining assembly 300, housing guide groove 310, first needle roller bearing 320, second needle roller bearing 330, connecting block 340, automatic coding machine 400 and clamping arm 500. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments. It should be understood that the following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0018] Example 1

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] like Figure 1 As shown, a stamping cylinder includes: a cylinder body 100, an impact transmission mechanism 200, a positioning and holding assembly 300, an automatic coding machine 400, and a clamping arm 500. The impact transmission mechanism 200 is internally connected to the cylinder body 100, the positioning and holding assembly 300 is internally connected to the cylinder body 100, the automatic coding machine 400 is connected to the clamping arm 500, and the clamping arm 500 is connected to the upper part of the cylinder body 100.

[0021] The positioning and holding assembly 300 includes a housing guide groove 310, a first needle roller bearing 320, a second needle roller bearing 330, and a connecting block 340. The housing guide groove 310 is located inside the cylinder body 100. The first needle roller bearing 320 is connected to the front side of the connecting block 340, and the second needle roller bearing 330 is connected to the rear side of the connecting block 340. The connecting block 340 is connected to the clamping arm 500 through the first needle roller bearing 320, and the connecting block 340 is connected to the impact transmission mechanism 200 through the second needle roller bearing 330.

[0022] The cylinder body 100 includes a cylinder barrel 110, a pusher block 120 and a housing 130. The cylinder barrel 110 is connected to the lower end of the housing 130, the pusher block 120 is connected to the top of the housing 130, and the housing 130 is provided with a housing guide groove 310 inside.

[0023] The impact transmission mechanism 200 includes: a cylinder piston rod 210, a crank connecting rod lever assembly 220, a piston 230, and a rotating pin 240. The lower end of the cylinder piston rod 210 is connected to the piston 230, and the piston 230 is connected to the inside of the cylinder 110. The upper end of the cylinder piston rod 210 is connected to the crank connecting rod lever assembly 220 and the positioning and retaining assembly 300. The crank connecting rod lever assembly 220 is connected to the positioning and retaining assembly 300. The crank connecting rod lever assembly 220 is connected to the inside of the housing 130. The rotating pin 240 is connected to the housing 130 and the clamping arm 500.

[0024] The principle of this invention: Compressed air enters the cylinder 110 through the air inlet on the side of the cylinder body 100, pushing the piston 230 upward. The piston 230 drives the cylinder piston rod 210 upward, and the linear motion is converted into the vertical impact motion of the clamping arm 500 through the crank-connecting rod lever assembly 220. During the impact process, the positioning and holding assembly 300 plays a key role. The connecting block 340 is connected to the clamping arm 500 through the first needle roller bearing 320 and to the impact transmission mechanism 200 through the second needle roller bearing 330. The needle roller bearing slides in the housing guide groove 310. The groove wall restricts the radial displacement of the slider, allowing it to only make linear motion in the vertical direction along the groove, ensuring the stability of the impact direction and avoiding character blurring due to uneven load. The housing guide groove 310 is precision ground, and the fit clearance with the needle roller bearing is 0.05-0.1mm, ensuring the guiding accuracy. The clamping arm 500 drives the character mold in the automatic coding machine 400 to move towards the workpiece, and completes the character imprinting through the preset impact force. The cylinder body 100 adopts a modular housing design. An external adjustable pneumatic component allows for controlled compressed air output via a valve, enabling stepless adjustment of impact force. It can be used with workpieces of different materials such as steel and aluminum without disassembly. After marking, the cylinder is vented in reverse through the other air inlet. Piston 230 drives the cylinder piston rod 210 downwards, resetting the transmission mechanism. Simultaneously, during cylinder reset, clamping arm 500 opens, and push block 120 pushes the adjustment dial next to the automatic marking machine 400, triggering the ratchet mechanism inside the automatic marking machine 400. This drives the digital wheel to rotate 36°, switching to the next character. The digital wheels inside the automatic marking machine 400 are connected via a 10:1 gear set, enabling decimal carry-over (10 rotations of the lower wheel drive 1 rotation of the higher wheel).

[0025] On the other hand, the core of the clamping air-cut self-locking mechanism lies in the structural design of the positioning and holding component 300. When the air supply to the cylinder is cut off, an external force is applied to the clamping arm 500. The force F transmitted to the connecting block 340 through the first needle roller bearing 320 can be decomposed into an upward force F1 and a rightward force F2. Because F1 is restricted by the housing guide groove 310, and F2 is restricted by the connection structure formed between the connecting block 340 and the impact transmission mechanism 200 through the second needle roller bearing 330, the external force cannot release the cylinder from the clamping state. This mechanism allows the clamping arm 500 to maintain a stable clamping of the workpiece even after the air supply is cut off.

[0026] This invention ensures reliable positioning of the mechanism by adding a positioning and holding component and a clamping and air-locking mechanism, avoiding engraving deviations caused by external interference, improving the consistency of markings and production safety, while reducing manual intervention for character mold replacement and calibration, thus reducing operational complexity and time costs.

[0027] The specific embodiments of this utility model have been described above, but this utility model is not limited thereto. Various changes can be made to this utility model as long as they do not depart from its spirit.

Claims

1. A stamping cylinder, characterized in that include: The cylinder body (100), impact transmission mechanism (200), positioning and holding assembly (300), automatic coding machine (400) and clamping arm (500) are connected to the inside of the cylinder body (100), the positioning and holding assembly (300) is connected to the inside of the cylinder body (100), the automatic coding machine (400) is connected to the clamping arm (500), and the clamping arm (500) is connected to the upper part of the cylinder body (100). The positioning and holding assembly (300) includes a housing guide groove (310), a first needle roller bearing (320), a second needle roller bearing (330), and a connecting block (340). The housing guide groove (310) is located inside the cylinder body (100). The first needle roller bearing (320) is connected to the front side of the connecting block (340), and the second needle roller bearing (330) is connected to the rear side of the connecting block (340). The connecting block (340) is connected to the clamping arm (500) through the first needle roller bearing (320), and the connecting block (340) is connected to the impact transmission mechanism (200) through the second needle roller bearing (330).

2. A stamping cylinder according to claim 1, characterized in that: The cylinder body (100) includes: cylinder barrel (110), push block (120) and outer shell (130). The cylinder barrel (110) is connected to the lower end of the outer shell (130), the push block (120) is connected to the top of the outer shell (130), and the outer shell (130) is provided with a shell guide groove (310).

3. A stamping cylinder according to claim 2, characterized in that: The impact transmission mechanism (200) includes: a cylinder piston rod (210), a crank connecting rod lever assembly (220), a piston (230), and a rotating pin (240). The lower end of the cylinder piston rod (210) is connected to the piston (230), and the piston (230) is connected to the inside of the cylinder (110). The upper end of the cylinder piston rod (210) is connected to the crank connecting rod lever assembly (220) and the positioning and retaining assembly (300). The crank connecting rod lever assembly (220) is connected to the positioning and retaining assembly (300). The crank connecting rod lever assembly (220) is connected to the inside of the housing (130). The rotating pin (240) is connected to the housing (130) and the clamping arm (500).

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