Rapid necking device of hydraulic damper

Abstract

The utility model relates to the technical field of press machines, in particular to a rapid necking device of a hydraulic damper, which comprises a main support, a lever is hinged on the main support, a power arm end of the lever is connected with a necking cylinder, a force-resisting arm end of the lever is hinged with a hinge arm, one end of the hinge arm is connected with a rapid cylinder, and the other end of the hinge arm is connected with a hydraulic cylinder. The necking machine further comprises a guide rail installed on the main support, a sliding block is installed on the guide rail in a sliding mode, and a necking die is fixedly installed on the sliding block. The hydraulic damper necking device has the advantages that the rapid approaching stage that the necking die is close to a hydraulic damper to be machined and the reset stage that the necking die is rapidly separated from the hydraulic damper after necking are both achieved through the mode that the hinge arm is pushed by the rapid air cylinder to swing. Only in the final necking stage that the necking die is really in contact with the hydraulic damper and carries out plastic processing, the necking air cylinder exerts the required strong power, so that the necking air cylinder only needs to provide power in an extremely short final necking stroke, and the running stroke of the necking air cylinder is greatly shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of presses, and particularly to a hydraulic damper rapid necking device. Background Art

[0002] As an important shock absorption and buffering component of hardware hinges, the hydraulic damper plays a damping role when the hinge closes. In the manufacturing process of the hydraulic damper, the necking process is an essential part, and its purpose is to plastically deform the damper housing to form a specific sealing structure or connection structure. The traditional hydraulic damper necking device usually adopts a mechanical transmission or a hydraulic / pneumatic drive method to realize the reciprocating motion of the necking die.

[0003] In the existing hydraulic damper necking devices, in order to ensure that the necking die can obtain sufficient pressure during operation to complete the plastic processing of the damper housing, the lever principle is generally adopted as the main transmission mechanism. In these devices, the power arm of the driving lever is usually designed to be much longer than the resistance arm, in order to obtain a larger output force with a smaller driving force, so as to meet the strong pressure required for necking processing.

[0004] However, although this design solves the pressure requirement problem, it brings significant drawbacks. For example: 1. Due to the huge difference in the lengths of the power arm and the resistance arm, in order to make the necking die complete its predetermined necking stroke, the necking cylinder that drives the lever movement needs to perform a very long stroke movement. This means that the cylinder piston needs to move from the initial position to the final position, spanning a relatively long distance.

[0005] 2. In the existing technology, the necking cylinder that drives the lever usually adopts a large-diameter cylinder in order to provide sufficient driving force. When the large-diameter cylinder completes a long stroke movement, each action requires a large amount of compressed gas. As the operating frequency of the equipment increases, the cumulative gas consumption will become very considerable, directly resulting in higher energy costs and operating expenses.

[0006] 3. The long stroke movement characteristics of the large-diameter cylinder determine that its response speed is relatively slow. The cylinder requires a certain amount of time during the processes of inflating, exhausting, and the reciprocating movement of the piston, which prolongs the cycle period of the entire necking action. This slow response characteristic severely restricts the operating rhythm of the necking device, resulting in low overall production efficiency and being unable to meet the requirements of modern industry for high-efficiency and fast-paced production. Especially in an automated production line, the low efficiency of the necking link will become the bottleneck of the entire production line, so it is necessary to make further improvements to it. Summary of the Utility Model

[0007] The purpose of the present utility model is to overcome the shortcomings of the prior art and provide a hydraulic damper rapid necking device with a simple structure, low manufacturing cost, which can effectively improve the necking accuracy and production efficiency, and reduce the production cost.

[0008] The purpose of the present utility model is achieved in the following way: A hydraulic damper rapid necking device, which includes a main bracket, a lever is hingedly installed on the main bracket, a necking cylinder is connected to the power arm end of the lever, and the necking cylinder pushes the lever to swing along the hinge point; One end of the resistance arm of the lever is hingedly installed with a hinge arm, and one end of the hinge arm is connected with a quick cylinder, and the quick cylinder pushes the hinge arm to swing;

[0009] It further includes a guide rail installed on the main bracket, a slider is slidably installed on the guide rail, a necking die is fixedly installed on the slider, and the slider is connected to the hinge arm through a connecting rod. When the hinge arm or the lever swings, it pushes the necking die to move up and down.

[0010] Further: A support ear is hingedly installed at the top of the hinge arm, the support ear is connected to the quick cylinder, and the quick cylinder drives the hinge arm to swing through the support ear.

[0011] Further: The cylinder body part of the quick cylinder is hingedly installed in a cylinder seat located on the lever, and the piston rod end of the quick cylinder is connected to the support ear.

[0012] Further: A hinge seat is provided at the top of the main bracket, the lever is hinged in the hinge seat through a pin shaft, and the length of the power arm end of the lever is greater than times the length of the resistance arm end.

[0013] Further: A material guiding track is also installed at the bottom of the main bracket, a pushing slider is installed at one end of the material guiding track, and the pushing slider is driven by a pushing cylinder to slide in the material guiding track;

[0014] The side wall of the material guiding track is connected with a feeding track, and the feeding track is connected with a vibrating feeder to neatly arrange the hydraulic dampers to be processed and push them into the feeding track one by one, and then push them into the material guiding track one by one;

[0015] A positioning seat is also provided at the tail of the material guiding track corresponding to the position of the necking die, and the hydraulic dampers to be processed entering the material guiding track are pushed into the positioning seat by the pushing slider.

[0016] Further: The positioning seat includes a fixed block on one side inside the material guiding track and a movable block installed opposite to it. The movable block is driven by a clamping cylinder to move relative to the fixed block to clamp the hydraulic damper to be processed between the movable block and the fixed block.

[0017] Further: Clamping grooves are concavely arranged on the opposite surfaces of the fixed block and the movable block.

[0018] The beneficial effects of the present utility model are as follows: 1. The structure is simple and the manufacturing cost is low, which improves the market competitiveness.

[0019] 2. In the present utility model, during the rapid approach stage of the necking die close to the hydraulic damper to be processed and the reset stage of quickly leaving the hydraulic damper after necking is completed, both are realized by the rapid cylinder pushing the swing of the hinge arm. Only in the final necking stage when the necking die truly contacts the hydraulic damper and performs plastic processing, the powerful force required is applied by the necking cylinder. This ingenious segmented driving method enables the necking cylinder to provide power only within a very short final necking stroke, thus significantly shortening its operating stroke.

[0020] 3. Since the necking cylinder only works within a short final stroke, the time and the required air volume for its inflation, exhaust, and piston movement are all significantly reduced. This means that compared with the prior art, the present utility model greatly reduces the consumption of compressed air and significantly saves the operating cost. At the same time, the necking cylinder with a shortened stroke can respond faster when it needs to intervene, avoiding the lag caused by the long stroke of the traditional large-diameter cylinder.

[0021] 4. During the necking stage, the rapid cylinder drives the hinge arm to swing inward, enabling the hinge arm to push the connecting rod in a direction approximately perpendicular to the lever, thereby quickly shortening the effective distance between the resistance arm end of the lever and the necking die. This efficient force transmission method enables the necking die to quickly and accurately reach the pre-necking position, preparing for the subsequent formal necking.

[0022] 5. During the reset stage, the rapid cylinder pushes the hinge arm to deflect, which can quickly and effectively pull the slider and the necking die away from the hydraulic damper. This rapid detachment action greatly shortens the auxiliary time, ensures that the processed hydraulic damper can quickly detach, and provides sufficient space and time for the rapid feeding of the next hydraulic damper to be processed, realizing the high efficiency and low energy consumption operation of the necking device, significantly improving the overall production efficiency of the equipment, and reducing the long-term operating cost. Description of the Drawings

[0023] Figure 1 It is the overall assembly effect diagram of the structure of the present utility model.

[0024] Figure 2 It is the assembly effect diagram of the guide rail and the feeding rail in the present utility model.

[0025] Figure 3 It is the effect diagram of the necking cylinder and the rapid cylinder in the retracted reset state in the present utility model.

[0026] Figure 4 It is the effect diagram of the rapid cylinder in the extended state in the present utility model.

[0027] Figure 5 and Figure 6 This is the effect diagram of the necking cylinder and the fast cylinder in the extended state in the present utility model. Specific embodiments

[0028] The following further specifically describes the present utility model with reference to the accompanying drawings. A hydraulic damper fast necking device includes a main bracket 1, a lever 2 is hingedly installed on the main bracket 1, a necking cylinder 3 is connected to the power arm end 21 of the lever 2, and the necking cylinder 3 pushes the lever 2 to swing along the hinge point; a hinge arm 4 is hingedly installed at the resistance arm end 22 of the lever 2, one end of the hinge arm 4 is connected to a fast cylinder 5, and the fast cylinder 5 pushes the hinge arm 4 to swing.

[0029] It further includes a guide rail 6 installed on the main bracket 1, a slider 7 is slidably installed on the guide rail 6, a necking die 8 is fixedly installed on the slider 7, the slider 7 is connected to the hinge arm 4 through a connecting rod 9, and when the hinge arm 4 swings, the slider 7 is driven through the connecting rod 9, thereby pushing the necking die 8 to move up and down.

[0030] In this embodiment, the lever 2 is the main force transmission structure, and its power arm end 21 is connected to the necking cylinder 3, which is used to drive the lever to swing when the maximum necking force needs to be provided. The hinge arm 4 is the key to realizing rapid positioning and resetting. One end of the hinge arm 4 is connected to the fast cylinder 5, and the other end is connected to the slider 7 carrying the necking die 8 through a connecting rod 9.

[0031] During the actual working process, when necking operation is required, first, the fast cylinder 5 pushes the hinge arm 4 to swing. The swing of the hinge arm 4 transmits the force to the slider 7 through the connecting rod 9, driving the necking die 8 to quickly move downward, so that it quickly approaches the hydraulic damper to be processed. In this rapid approaching stage, the driving force is mainly provided by the fast cylinder 5, which is characterized by fast speed and small thrust.

[0032] When the necking die 8 approaches or contacts the hydraulic damper and a strong necking force needs to be applied, the necking cylinder 3 starts to act, pushing the lever 2 to swing, and then transmitting the strong necking force to the necking die 8 through the hinge arm 4 and the connecting rod 9 to complete the plastic necking of the hydraulic damper. In this final necking stage, the necking cylinder 3 only provides power in a short stroke, greatly reducing its operating stroke and gas consumption.

[0033] After necking is completed, the fast cylinder 5 and the necking cylinder act in the reverse direction, pushing the hinge arm 4 and the lever to swing, quickly pulling the necking die 8 upward away from the hydraulic damper, providing sufficient space and time for the feeding of the next workpiece and the discharging of the processed workpiece.

[0034] This design realizes the segmented control of the driving force, avoiding the high energy consumption and sluggish response problems brought about by the full - length long - stroke movement of the traditional large - caliber necking cylinder. The quick - acting cylinder 5 is responsible for quick positioning and resetting, while the necking cylinder 3 only intervenes when a strong force is required, greatly improving the operating efficiency and energy conservation of the device.

[0035] In one embodiment, an ear 10 is hingedly installed at the top of the hinge arm 4.

[0036] In this embodiment, the connection method between the quick - acting cylinder 5 and the hinge arm 4 is optimized. The ear 10, as a prominent connection point at the top of the hinge arm 4, provides a stable hinged installation position for the quick - acting cylinder 5. When the piston rod of the quick - acting cylinder 5 extends and retracts, it directly acts on the hinge arm 4 through the ear 10, enabling the hinge arm 4 to swing precisely around its hinge point.

[0037] This connection method ensures that the power of the quick - acting cylinder 5 can be transmitted to the hinge arm 4 efficiently and stably, ensuring that the swing angle and speed of the hinge arm 4 are controlled, thereby guaranteeing the accuracy and stability of the quick approach and quick separation actions of the necking die 8.

[0038] In one embodiment, the cylinder body part of the quick - acting cylinder 5 is hingedly installed in a cylinder seat 24 located on the lever 2, and the piston rod end of the quick - acting cylinder 5 is connected to the ear 10.

[0039] In this embodiment, the cylinder body part of the quick - acting cylinder 5 is hingedly installed in the cylinder seat 24 on the lever 2, so that the base of the quick - acting cylinder 5 moves together with the lever 2. Its piston rod end is then connected to the ear 10. This design enables the quick - acting cylinder 5, the hinge arm 4 and the lever 2 to form a compact and linked system. When the lever 2 swings, the installation point of the quick - acting cylinder 5 also moves accordingly, which helps to keep the acting angle between the quick - acting cylinder 5 and the hinge arm 4 unchanged during the entire necking process, ensuring the smooth and efficient transmission of torque.

[0040] In one embodiment: an articulated seat 12 is provided at the top of the main bracket 1, and the lever 2 is hinged in the articulated seat 12 through a pin 23, and the length of the power - arm end of the lever 2 is more than 4 times the length of the resistance - arm end.

[0041] In this embodiment: this lever ratio is the basis for the high - efficiency force amplification of the present utility model. When the necking cylinder 3 acts on the power - arm end, although its stroke is short, through the proportional relationship between the long power arm and the short resistance arm, a small acting force can be converted into a huge output force at the resistance - arm end 22, thereby providing sufficient processing pressure for the final necking.

[0042] In one embodiment, a material guide track 13 is further installed at the bottom of the main bracket 1, and a material pusher slider 14 is installed at one end of the material guide track 13. The material pusher slider 14 is driven by a material pusher cylinder 15 to slide in the material guide track 13;

[0043] The side wall of the guide track 13 is connected with a feed track 16, which is connected to a vibration feeder. The hydraulic dampers 17 to be processed are neatly arranged and pushed into the feed track 16, and then pushed into the guide track 13 one by one.

[0044] A positioning seat 18 is also provided at the tail of the material guide track 13 corresponding to the position of the necking mold 8 , and the hydraulic damper 17 to be processed that enters the material guide track 13 is pushed into the positioning seat 18 by the pushing slider 14 .

[0045] During production, the vibrating feeder orients and neatly arranges the hydraulic dampers 17 to be processed, and guides them into the guide track 13 through the feed track 16. Once entering the guide track 13, the push cylinder 15 drives the push slide 14 to slide forward, and accurately pushes the hydraulic damper 17 into the positioning seat 18, which is located directly below the necking mold 8, ensuring the position accuracy of the necking process.

[0046] In this embodiment, the introduction of automatic feeding and positioning mechanism realizes continuous and accurate feeding of workpieces, greatly reduces the need for manual operation, and improves the degree of automation and production efficiency. The presence of the positioning seat 18 ensures the position consistency of each shrinking operation, improving the processing quality and qualified rate.

[0047] In one embodiment, the positioning seat 18 includes a fixed block 181 located on one side of the guide track 13, and a movable block 182 installed opposite thereto. The movable block 182 is driven by a clamping cylinder 183 to move relative to the fixed block 181, and the hydraulic damper 17 to be processed is clamped between the movable block 182 and the fixed block 181. This clamping mechanism ensures that the hydraulic damper can be firmly and stably positioned during the shrinking process, preventing it from being displaced or shaken under the shrinking force, thereby ensuring the accuracy and quality of the shrinking process. At the same time, the cylinder-driven clamping method also makes the clamping and releasing actions fast and reliable.

[0048] In one embodiment, clamping grooves 184 are concavely provided on the opposite faces of the fixed block 181 and the movable block 182. When the movable block 182 clamps the hydraulic damper 17, the outer contour of the hydraulic damper 17 can closely fit with the clamping grooves 184. The design of the clamping grooves 184 provides better wrapping and positioning effects. It not only increases the clamping friction force to prevent the hydraulic damper from slipping during clamping, but more importantly, its shape can match the outer shape of the hydraulic damper to ensure accurate central positioning of the workpiece during the necking operation, further improving the accuracy and stability of the necking process.

[0049] In summary, when the equipment in this case works, the hydraulic dampers 17 to be processed are neatly arranged and introduced into the guiding track 13 through the vibrating feeder and the feeding track 16. Subsequently, the pushing cylinder 15 drives the pushing slider 14 to accurately push it into the positioning seat 18.

[0050] Once the hydraulic damper 17 enters the positioning seat 18, the clamping cylinder 183 drives the movable block 182 to cooperate with the clamping grooves 184 on the fixed block 181 to firmly clamp it, ensuring stable position during the processing.

[0051] As Figure 4 shown, at the beginning of the necking operation, the fast cylinder 5 first acts to push the hinge arm 4 to swing. The hinge arm 4 drives the slider 7 and the necking die 8 to quickly move downward through the connecting rod 9, so that they quickly approach the hydraulic damper 17 to be processed to complete the rapid pre-positioning.

[0052] As Figure 5 、 6 shown, when the necking die 8 reaches the predetermined position, the necking cylinder 3 starts to work to push the lever 2 to swing. Since the power arm of the lever 2 is much larger than the resistance arm, the necking cylinder 3 can transmit a powerful necking force to the necking die 8 through the hinge arm 4 and the connecting rod 9 within a very short stroke to perform the final plastic necking process on the hydraulic damper.

[0053] When the necking is completed, the fast cylinder 5 acts in the reverse direction to push the hinge arm 4 to swing. The hinge arm 4 quickly pulls the slider 7 and the necking die 8 upward away from the hydraulic damper, providing a fast and convenient space for the feeding of the next workpiece and the separation of the processed workpiece.

[0054] Finally, the clamping cylinder 183 releases the movable block 182, and the processed hydraulic damper is taken out, waiting for the entry of the next workpiece.

[0055] Compared with the traditional technology: By dividing the movement of the necking die into two stages, namely, rapid approach / reset (performed by the rapid cylinder and the hinge arm) and final force application for necking (performed by the necking cylinder and the lever), the present utility model ingeniously solves the problems of excessive stroke, high energy consumption, and slow response of the necking cylinder in the traditional necking device. This segmented drive design enables the main necking force cylinder to work only within a critical short stroke, thereby significantly reducing gas consumption, enhancing the response speed, and remarkably improving the operating efficiency and automation level of the entire device. At the same time, the automatic feeding, precise positioning, and firm clamping mechanisms further ensure the processing quality and production rhythm, so it can be widely promoted and used.

[0056] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A rapid necking-down device for a hydraulic damper, characterized in that: It includes a main bracket (1), on which a lever (2) is hingedly installed. A necking cylinder (3) is connected to the power arm end (21) of the lever (2), and the necking cylinder (3) pushes the lever (2) to swing along the hinge point. One end of the resistance arm end (22) of the lever (2) is hingedly installed with a hinge arm (4), and a quick-acting cylinder (5) is connected to one end of the hinge arm (4), and the quick-acting cylinder (5) pushes the hinge arm (4) to swing. It further includes a guide rail (6) installed on the main bracket (1), and a slider (7) is slidably installed on the guide rail (6). A necking die (8) is fixedly installed on the slider (7), and the slider (7) is connected to the hinge arm (4) through a connecting rod (9). When the hinge arm (4) or the lever (2) swings, it pushes the necking die (8) to move up and down.

2. The rapid necking device for a hydraulic damper according to claim 1, characterized in that: At the top of the hinge arm (4), an ear (10) is hingedly installed, and the ear (10) is connected to the quick-acting cylinder (5). The quick-acting cylinder (5) drives the hinge arm (4) to swing through the ear (10).

3. A rapid necking device for a hydraulic damper according to claim 2, characterized in that: The cylinder body part of the quick-acting cylinder (5) is hingedly installed in a cylinder seat (24) located on the lever (2), and the piston rod end of the quick-acting cylinder (5) is connected to the ear (10).

4. A rapid necking-down device for a hydraulic damper according to claim 1, characterized in that: At the top of the main bracket (1), a hinge seat (12) is provided, and the lever (2) is hinged in the hinge seat (12) through a pin shaft (23). The length of the power arm end of the lever (2) is more than 4 times the length of the resistance arm end.

5. A rapid necking-down device for a hydraulic damper according to claim 1, characterized in that: At the bottom of the main bracket (1), a material guiding track (13) is further installed. At one end of the material guiding track (13), a pushing slider (14) is installed, and the pushing slider (14) is driven by a pushing cylinder (15) to slide in the material guiding track (13). The side wall of the material guiding track (13) is connected with a feeding track (16), and the feeding track (16) is connected with a vibrating feeder, which neatly arranges the hydraulic dampers (17) to be processed and pushes them into the feeding track (16) one by one and then into the material guiding track (13) one by one. At the tail of the material guiding track (13) corresponding to the position of the necking die (8), a positioning seat (18) is further provided. The hydraulic dampers (17) to be processed entering the material guiding track (13) are pushed into the positioning seat (18) by the pushing slider (14).

6. The rapid necking device of a hydraulic damper according to claim 5, characterized in that: The positioning seat (18) includes a fixed block (181) on one side inside the material guiding track (13) and a movable block (182) installed opposite to it. The movable block (182) is driven by a clamping cylinder (183) to move relative to the fixed block (181), and the hydraulic damper (17) to be processed is clamped between the movable block (182) and the fixed block (181).

7. A rapid necking device for a hydraulic damper according to claim 6, characterized in that: On the opposite surfaces of the fixed block (181) and the movable block (182), clamping grooves (184) are concavely provided.

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