Digital display weighing device capable of resisting impact by using cylinder pressure

Abstract

The invention discloses a digital display weighing device utilizing cylinder pressure to resist impact, which comprises a rack, an air cylinder, a stamping mechanism and an intelligent controller, and is characterized in that the air cylinder is fixedly mounted on the rack, and a pressure transmitter is fixedly mounted on the air cylinder and is used for collecting and outputting a real-time air pressure value in the air cylinder in real time; the stamping mechanism is a hard part and assembled on the rack, the stamping mechanism is located above the air cylinder, the output end of the stamping mechanism corresponds to a piston rod of the air cylinder, and the stamping mechanism can apply pressure to the piston rod of the air cylinder so as to compress the piston rod. The method has the beneficial effects that the pressure precision can be guaranteed, the pressure can be judged to reach the standard without waiting for the stability of the cylinder pressure, the single-time processing period can be shortened to 0.3-0.5 second, the gas compression stroke is further reduced in cooperation with the optimal design of the preset initial air pressure, the efficient production requirements of batch light industrial products such as buttons and zippers are met, and the production efficiency is improved. And the production efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of stamping equipment technology, specifically to a digital display weighing device that utilizes cylinder pressure to resist impact. Background Technology

[0002] In the fields of stamping and riveting, digital display weighing devices are key equipment for monitoring and measuring processing pressure. Their pressure control accuracy directly affects workpiece processing quality and production stability. Precise pressure control ensures qualified workpiece forming quality and firm connections, preventing product scrap due to improper processing parameters. However, existing stamping devices generally suffer from poor pressure control accuracy when performing stamping or riveting operations. Specifically, insufficient pressure leads to weak workpiece connections and substandard forming, failing to meet product performance requirements. Conversely, excessive pressure can damage workpieces, significantly increasing scrap rates and production costs.

[0003] To address the aforementioned issue of insufficient pressure control accuracy, the industry commonly employs an improvement approach that directly controls the internal pressure of the pneumatic or hydraulic cylinders driving the stamping or riveting actions. While this approach improves pressure control accuracy to some extent, in actual industrial production scenarios, pressure regulation always requires a "pressure holding" process, meaning that the cylinder pressure must be allowed to stabilize for at least one second to ensure that the processing pressure meets the set parameters.

[0004] However, the pressure holding and waiting process significantly reduces overall production efficiency, especially for the production of small light industrial products such as buttons and zippers, which are usually characterized by large batches and short processing cycles per piece, requiring extremely high production rhythm. A 1-second pressure holding and waiting time will greatly extend the processing time per unit product, which cannot meet the needs of efficient mass production.

[0005] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a digital display weighing device that utilizes cylinder pressure to resist impact. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of this invention is to provide a digital display weighing device that utilizes cylinder pressure to resist impact, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention provides a digital display weighing device that utilizes cylinder pressure to resist impact, comprising a frame, a cylinder, a stamping mechanism, and an intelligent controller. The cylinder is fixedly mounted on the frame, and a pressure transmitter is fixedly mounted on the cylinder. The pressure transmitter is used to collect and output the real-time air pressure value inside the cylinder. The stamping mechanism is a rigid component and is mounted on the frame. The stamping mechanism is located above the cylinder, and its output end corresponds to the piston rod of the cylinder. The stamping mechanism can apply pressure to the piston rod of the cylinder to compress it. The intelligent controller stores a preset air pressure value. The intelligent controller and the pressure transmitter receive the real-time air pressure value output by the pressure transmitter. The intelligent controller can compare the real-time air pressure value with the preset air pressure value. When the real-time air pressure value equals the preset air pressure value, the intelligent controller controls the stamping mechanism to stop pressing down.

[0008] In one or more embodiments of the present invention, the stamping mechanism includes a sliding rod and a motor. The sliding rod is slidably connected to the frame and coaxially arranged with the piston rod of the cylinder. A rotating roller is rotatably connected to one end of the sliding rod away from the cylinder. The motor is fixedly mounted on the frame, and a cam matching the rotating roller is fixedly connected to the rotating shaft of the motor.

[0009] In one or more embodiments of the present invention, a sleeve is fixedly connected to the frame, and the sliding rod is slidably connected inside the sleeve, with both ends of the sliding rod protruding from the sleeve.

[0010] In one or more embodiments of the present invention, the sliding rod is provided with a fork, and a second spring is fixedly connected to the end of the fork away from the sliding rod, and the end of the second spring away from the fork is fixedly connected to the frame.

[0011] In one or more embodiments of the present invention, the sliding rod is provided with a sliding groove that matches the shift fork, the sleeve is provided with a through groove that matches the rotating roller, one end of the shift fork passes through the through groove and is slidably connected in the sliding groove, one end of the shift fork located in the sliding groove is fixedly connected to a first spring, and the end of the first spring away from the shift fork is fixedly connected to the groove wall of the sliding groove.

[0012] In one or more embodiments of the present invention, a foot pedal is fixedly installed on the frame, a pull rope is fixedly connected to the foot pedal, and the end of the pull rope away from the foot pedal is fixedly connected to a shift fork.

[0013] In one or more embodiments of the present invention, the shift fork is provided with a through hole, and a limiting rod coaxial with the through hole is fixedly connected to the frame. The limiting rod slides through the through hole to limit the movement direction of the shift fork.

[0014] In one or more embodiments of the present invention, the smart controller stores multiple preset air pressure values, and the smart controller is equipped with a touch screen display. The preset air pressure value can be selected through the touch screen display, and the selected preset air pressure value can be precisely adjusted.

[0015] In one or more embodiments of the present invention, the intelligent controller has a pressure data storage function, which can automatically record and save the received real-time pressure value inside the cylinder.

[0016] In one or more embodiments of the present invention, the intelligent controller integrates a USB interface and a Bluetooth communication module, which can send the stored air pressure data to a mobile device via either USB data transmission or Bluetooth wireless transmission.

[0017] The beneficial effects of this invention are: it can not only ensure pressure accuracy, but also determine that the pressure meets the standard without waiting for the cylinder pressure to stabilize. The single processing cycle can be shortened to 0.3-0.5 seconds. With the optimized design of preset initial air pressure, the gas compression stroke is further reduced, which is suitable for the high-efficiency production needs of mass-produced light industrial products such as buttons and zippers, and greatly improves production efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a digital display weighing device that utilizes cylinder pressure to resist impact, according to an embodiment of the present invention. Figure 2 This is a cross-sectional view of a digital display weighing device that utilizes cylinder pressure to resist impact, according to an embodiment of the present invention. Figure 3 for Figure 2 Schematic diagram of the structure at point A; Figure 4 This is a partial cross-sectional view of a digital display weighing device that utilizes cylinder pressure to resist impact, according to an embodiment of the present invention. Figure 5 for Figure 4 Schematic diagram of the structure at point B; Figure 6 This is an interface diagram of a touch screen display of a digital display weighing device that utilizes cylinder pressure to resist impact, according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Frame; 11. Foot pedal; 111. Pull rope; 12. Limit rod; 2. Cylinder; 21. Pressure transmitter; 3. Sleeve; 31. Through groove; 4. Sliding rod; 41. Rotating roller; 42. Slide groove; 5. Intelligent controller; 6. Motor; 61. Cam; 7. Shift fork; 701. Through hole; 71. First spring; 72. Second spring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: like Figures 1 to 3 As shown, an embodiment of the present invention discloses a digital display weighing device utilizing cylinder pressure to resist impact, comprising a frame 1, a cylinder 2, a stamping mechanism, and an intelligent controller 5. The cylinder 2 is fixedly assembled to a pre-set mounting position on the frame 1 by welding or bolting. A pressure transmitter 21 is fixedly embedded in the cylinder wall of the cylinder 2, with its sensing end extending directly into the rodless cavity of the cylinder 2. This allows for real-time acquisition of the cylinder's internal air pressure signal and its conversion into a standard electrical signal output, achieving accurate sensing and transmission of the air pressure value.

[0023] The stamping mechanism is a rigid structural component, which can prevent its own deformation from affecting the accuracy of pressure transmission. It is mounted on the frame 1 and located directly above the cylinder 2. The output end of the stamping mechanism is coaxially aligned with the piston rod of the cylinder 2, ensuring that the pressure is transmitted axially. During operation, the stamping mechanism applies axial pressure to the piston rod of the cylinder 2, driving the piston rod of the cylinder 2 to compress the gas in the rodless chamber. Since the gas is compressible, the change in gas pressure inside the cylinder can indirectly reflect the magnitude of the stamping pressure.

[0024] The intelligent controller 5 has multiple preset air pressure values ​​pre-stored to adapt to different workpieces, and is electrically connected to the pressure transmitter 21 via shielded wires. After receiving the electrical signal output by the pressure transmitter 21, the intelligent controller 5 obtains the real-time air pressure value through internal algorithm analysis, and compares it with the preset air pressure value in real time to form a closed-loop control logic.

[0025] In practical applications, the stamping die or riveting die is symmetrically fixed to the top of the piston rod of cylinder 2 and the output end of the stamping mechanism, respectively. After the device is started, the stamping mechanism moves downward and compresses the piston rod of cylinder 2. The gas inside the cylinder is compressed, causing the air pressure to gradually increase. When the intelligent controller 5 detects that the real-time air pressure value is equal to the preset air pressure value, it immediately outputs a stop signal to control the stamping mechanism to stop pressing down. At this time, the stamping or riveting force on the workpiece between the dies is exactly the standard force. This control logic does not require waiting for the cylinder pressure to stabilize and maintain pressure. It can be accurately calibrated through the formula based on the correspondence between air pressure and pressure. As long as the real-time air pressure meets the standard, the pressure will be qualified, which will greatly shorten the single processing cycle and improve production efficiency.

[0026] Preferably, to further improve production efficiency, an initial air pressure close to a preset value can be pre-charged into cylinder 2 before stamping or riveting. For example, if the standard cylinder pressure required for the workpiece to meet the standard is 0.3 MPa, an initial air pressure of 0.29 MPa can be pre-charged into cylinder 2. The principle is that since the initial air pressure is close to the target value, the stamping mechanism only needs to compress the gas slightly to achieve the target air pressure, reducing the gas compression stroke and time, and further improving the processing cycle.

[0027] It should be noted that this device indirectly obtains the actual pressure exerted on the workpiece by the stamping mechanism through cylinder pressure, based on fundamental mechanical formulas. ,in: The actual pressure exerted on the workpiece, expressed in N. This refers to the real-time air pressure inside cylinder 2. This refers to the effective force-bearing area of ​​the rodless chamber in cylinder 2. From cylinder bore The decision is made, and the specific calculation formula is as follows: The intelligent controller 5 has the conversion algorithm pre-stored, which can automatically convert the preset air pressure value and the real-time air pressure value into the corresponding pressure value and display it digitally, realizing the accurate correlation between air pressure and actual pressure, making it convenient for users to set and monitor intuitively.

[0028] like Figure 2 and Figure 3 As shown, the stamping mechanism in this embodiment specifically includes a sliding rod 4 and a motor 6. The sliding rod 4 is slidably connected to the guide structure of the frame 1 and is strictly coaxial with the piston rod of the cylinder 2 to ensure coaxiality of pressure transmission. A rotating roller 41 is rotatably connected to the end of the sliding rod 4 away from the cylinder 2, and the rotating roller 41 can rotate flexibly around its own axis. The motor 6 is welded or bolted to the top of the frame 1 via a motor mount. A cam 61, adapted to the rotating roller 41, is fixedly connected to its output shaft via a flat key. The profile curve of the cam 61 is optimized to achieve smooth lifting and lowering of the sliding rod 4.

[0029] After the motor 6 starts, its output shaft drives the cam 61 to rotate at a constant speed. When the protruding part of the cam 61 contacts the rotating roller 41, it generates downward pressure through the contact, driving the sliding rod 4 to slide downward along the frame 1, thereby achieving smooth compression of the piston rod of the cylinder 2.

[0030] Furthermore, a sleeve 3 is welded onto the frame 1 at the position corresponding to the sliding rod 4. The sliding rod 4 slides through the sleeve 3, with both ends protruding from the sleeve 3. The sleeve 3 provides precise guidance for the sliding rod 4, effectively limiting its radial offset and ensuring that it always slides axially, avoiding problems such as uneven pressure load and uneven workpiece force caused by the sliding rod being misaligned.

[0031] Example 2 like Figures 2 to 5 As shown, this embodiment optimizes the reset structure and safety protection structure of the sliding rod 4 based on Embodiment 1. Specifically, to achieve automatic reset of the sliding rod 4 after processing, a fork 7 is assembled on the sliding rod 4. A second spring 72 is welded and fixed to the end of the fork 7 away from the sliding rod 4, and the other end of the second spring 72 away from the fork 7 is welded to the fixed support of the frame 1.

[0032] During the stamping process, as the sliding rod 4 moves downward, it drives the shift fork 7 to move downward synchronously, stretching the second spring 72 and storing elastic potential energy. When the pressure on the workpiece reaches a preset value, the intelligent controller 5 controls the motor 6 to stop rotating and rotate in the opposite direction to reset. The protruding part of the cam 61 disengages from the rotating roller 41. At this time, the second spring 72 releases its elastic potential energy, generating an upward contraction force that pulls the shift fork 7 and the sliding rod 4 upward synchronously to reset. This reset structure allows the sliding rod 4 to quickly return to its initial position, making it easier for workers to remove the processed workpiece and improving workpiece removal efficiency.

[0033] like Figures 2 to 5 As shown, this embodiment further optimizes the connection structure between the shift fork 7 and the sliding rod 4. Specifically, the sliding rod 4 has a groove 42 that matches the shift fork 7, and the sleeve 3 has a through groove 31 that matches the movement trajectory of the rotating roller 41. One end of the shift fork 7 passes through the through groove 31 and is slidably fitted into the groove 42. A first spring 71 is welded to one end of the shift fork 7 located in the groove 42, and the end of the first spring 71 away from the shift fork 7 is welded to the groove wall of the groove 42. The first spring 71 is a compression spring, which can provide cushioning when the sliding rod 4 moves up and down, and at the same time assist the sliding rod 4 in resetting, improving the stability of resetting.

[0034] To improve operational safety, a foot pedal 11 is fixedly installed on the frame 1. The foot pedal 11 adopts a lever structure, and a pull rope 111 is welded to its movable end. The end of the pull rope 111 away from the foot pedal 11 is welded to the shift fork 7.

[0035] During production, the worker must first step on the foot pedal 11, which pulls the fork 7 downwards via the pull rope 111. At this time, the second spring 72 extends elastically, and the sliding rod 4 moves downwards under the combined action of its own weight and the tension of the first spring 71 until the lower end of the sliding rod 4 contacts the top of the piston rod of the cylinder 2. During this stage, the motor 6 is in standby mode and does not rotate. Even if the worker's hand is not removed from the processing area in time, the sliding rod 4 only moves downwards under the action of gravity and spring tension, with minimal pressure, which will not cause crush injuries, thus providing a safety warning. Only after the worker confirms that their hand has been removed from the processing area should they press the start switch of the motor 6, at which point the motor 6 will rotate and drive the stamping action, thus avoiding safety hazards from the operation process.

[0036] Furthermore, the shift fork 7 has a through hole 701, and a limiting rod 12 coaxially corresponding to the through hole 701 is welded onto the frame 1. The limiting rod 12 slides through the through hole 701. The cooperation between the limiting rod 12 and the through hole 701 can precisely limit the movement direction of the shift fork 7, ensuring that the shift fork 7 can only move up and down along the axial direction, avoiding radial displacement that could cause the sliding rod 4 to jam, and improving the operational stability of the device.

[0037] Example 3: like Figure 1 and Figure 6 As shown, this embodiment focuses on optimizing the functions of the intelligent controller 5, improving the device's versatility and data traceability capabilities. The intelligent controller 5 has multiple preset air pressure values ​​stored within it, adapting to the processing needs of workpieces of different specifications and materials. The intelligent controller 5 integrates a touch screen display panel, allowing users to directly select preset air pressure levels via touch operation. Users can also enter manual mode to precisely adjust the selected preset air pressure values, making operation convenient and adaptable to diverse processing needs. Simultaneously, the touch screen display can show key parameters such as the set pressure value, the corresponding real-time pressure value, and the monitored pressure value in real time, allowing users to intuitively monitor the processing status.

[0038] To enable traceability and analysis of processing data, the intelligent controller 5 has a built-in large-capacity data storage module that can automatically record and save data such as real-time air pressure value, processing time, and pressure compliance time in each processing cycle. The storage capacity can meet the data storage requirements of at least 100,000 processing cycles, and the data will not be lost when power is off.

[0039] The intelligent controller 5 integrates a USB interface and a Bluetooth communication module, enabling multiple ways of data transmission: users can connect the intelligent controller 5 to devices such as computers and printers via USB data cable to directly export stored processing data; or they can connect the intelligent controller 5 to mobile devices such as mobile phones and tablets via Bluetooth wireless communication to achieve wireless transmission and remote viewing of processing data, which is convenient for production management and quality traceability.

[0040] Compared with existing technologies, the present invention provides a digital display weighing device that utilizes cylinder pressure to resist impact. Through precise air pressure and pressure calibration, it can not only ensure pressure accuracy, but also determine that the pressure meets the standard without waiting for the cylinder pressure to stabilize. The single processing cycle can be shortened to 0.3-0.5 seconds. With the optimized design of preset initial air pressure, the gas compression stroke is further reduced, which is suitable for the high-efficiency production needs of mass-produced light industrial products such as buttons and zippers, and greatly improves production efficiency.

[0041] Obviously, the above-described embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. A digital display weighing device utilizing cylinder pressure to resist impact, comprising a frame (1), characterized in that, Also includes: Cylinder (2), the cylinder (2) is fixedly mounted on the frame (1), and a pressure transmitter (21) is fixedly mounted on the cylinder (2). The pressure transmitter (21) is used to collect and output the real-time air pressure value in the cylinder (2) in real time. The stamping mechanism is a rigid component and is mounted on the frame (1). The stamping mechanism is located above the cylinder (2). The output end of the stamping mechanism corresponds to the piston rod of the cylinder (2). The stamping mechanism can apply pressure to the piston rod of the cylinder (2) to compress the piston rod. The intelligent controller (5) stores a preset air pressure value. The intelligent controller (5) and the pressure transmitter (21) receive the real-time air pressure value output by the pressure transmitter (21). The intelligent controller (5) can compare the real-time air pressure value with the preset air pressure value. When the real-time air pressure value is equal to the preset air pressure value, the intelligent controller (5) controls the stamping mechanism to stop pressing down.

2. The digital display weighing device utilizing cylinder pressure to resist impact as described in claim 1, characterized in that, The stamping mechanism includes: The sliding rod (4) is slidably connected to the frame (1) and is coaxially arranged with the piston rod of the cylinder (2). The end of the sliding rod (4) away from the cylinder (2) is rotatably connected to a rotating roller (41). The motor (6) is fixedly mounted on the frame (1), and a cam (61) matching the rotating roller (41) is fixedly connected to the rotating shaft of the motor (6).

3. The digital display weighing device utilizing cylinder pressure to resist impact as described in claim 2, characterized in that, A sleeve (3) is fixedly connected to the frame (1), and the sliding rod (4) is slidably connected inside the sleeve (3). Both ends of the sliding rod (4) protrude from the sleeve (3).

4. The digital display weighing device using cylinder pressure to resist impact as described in claim 3, characterized in that, The sliding rod (4) is provided with a fork (7), and a second spring (72) is fixedly connected to the end of the fork (7) away from the sliding rod (4). The end of the second spring (72) away from the fork (7) is fixedly connected to the frame (1).

5. A digital display weighing device utilizing cylinder pressure to resist impact as described in claim 4, characterized in that, The sliding rod (4) has a groove (42) that matches the shift fork (7), and the sleeve (3) has a through groove (31) that matches the rotating roller (41). One end of the shift fork (7) passes through the through groove (31) and is slidably connected in the groove (42). One end of the shift fork (7) located in the groove (42) is fixedly connected to a first spring (71), and the end of the first spring (71) away from the shift fork (7) is fixedly connected to the groove wall of the groove (42).

6. A digital display weighing device utilizing cylinder pressure to resist impact as described in claim 4, characterized in that, A foot pedal (11) is fixedly installed on the frame (1), and a pull rope (111) is fixedly connected to the foot pedal (11). The end of the pull rope (111) away from the foot pedal (11) is fixedly connected to the shift fork (7).

7. A digital display weighing device utilizing cylinder pressure to resist impact as described in claim 4, characterized in that, The shift fork (7) has a through hole (701), and a limiting rod (12) coaxial with the through hole (701) is fixedly connected to the frame (1). The limiting rod (12) slides through the through hole (701) to limit the movement direction of the shift fork (7).

8. A digital display weighing device utilizing cylinder pressure to resist impact as described in claim 1, characterized in that, The smart controller (5) stores multiple preset air pressure values. The smart controller (5) is equipped with a touch screen display. The preset air pressure value can be selected through the touch screen display, and the selected preset air pressure value can be precisely adjusted.

9. A digital display weighing device utilizing cylinder pressure to resist impact as described in claim 8, characterized in that, The intelligent controller (5) has a pneumatic data storage function, which can automatically record and save the real-time pneumatic pressure value received in the cylinder (2).

10. A digital display weighing device utilizing cylinder pressure to resist impact as described in claim 9, characterized in that, The intelligent controller (5) integrates a USB interface and a Bluetooth communication module, which can send the stored air pressure data to the mobile terminal through two methods: USB data transmission or Bluetooth wireless transmission.

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