Automatic feeding mechanism for engine cylinder block machining

Abstract

The invention discloses an automatic feeding mechanism for engine cylinder block machining. The automatic feeding mechanism comprises a feeding frame, a door opening and closing mechanism and a clamp matched with the feeding frame. A lifting mechanism and a feeding mechanism are arranged on the feeding frame, the lifting mechanism is used for driving the cylinder body to move up and down, and the feeding mechanism is used for driving the cylinder body to move horizontally; the door opening and closing mechanism is in linkage with the feeding mechanism and used for allowing the cylinder body to enter or leave the machining center. Due to the fact that the whole feeding mechanism achieves automatic operation, a series of operation from feeding, conveying, entering and exiting of the machining center to final circulation of the cylinder body is achieved, excessive manual operation is not needed, manpower input is greatly reduced, labor cost is reduced, meanwhile, risks possibly caused by manual operation errors are reduced, and production efficiency is improved. And the production stability and reliability are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of engine cylinder processing, and in particular relates to an automatic feeding mechanism for engine cylinder processing. Background Art

[0002] Engine block processing technology refers to a series of mechanical processing operations on the key component of the engine block to achieve the design requirements of accuracy, size, surface quality and other indicators, so as to meet the normal assembly and operation performance of the engine. The product needs to be clamped and positioned during engine block processing.

[0003] Before the product is clamped and positioned, it needs to be moved to the fixture. The traditional way of loading is to place the product on the loading rack and push the product for clamping. In the process of pushing, the product will inevitably have scratches or scratches on the contact surface. On the one hand, there are many manual links involved in loading and cylinder circulation. From placing the cylinder to the initial position, to transporting it to the machining center, and retrieving it after processing, a series of operations require manual handling or simple mechanical assisted operations. This not only consumes a lot of manpower and time, but also the links are not tightly connected, and there is a lot of waiting time, which makes the entire production process incoherent, seriously restricts the improvement of production efficiency, and is difficult to meet the needs of large-scale production. On the other hand, there is a lack of effective linkage and cooperation between the relevant institutions. For example, the opening and closing of the feeding mechanism and the machining center door cannot work together. It is often the case that the cylinder waits for the door to open or cannot be taken out in time after processing, which further reduces the production output per unit time.

[0004] The patent with publication number CN114604562A discloses a fully automatic loading and unloading equipment for engine cylinder processing, which transports the cylinders by setting a transport roller. When the translation mechanism is horizontal with the transport roller, the two cylinders are transported to the two translation mechanisms respectively, and the translation mechanism is then rotated 90° by the servo motor, and the two translation mechanisms are driven by the push-pull cylinder to enter the processing equipment to process the cylinders; the two cylinders are clamped by setting two loading clamping mechanisms, and at the same time, the unloading mechanism covers the processed cylinder on the translation mechanism close to it, and the side of the unloading mechanism is close to another processed cylinder, and the two loading clamping mechanisms and the unloading mechanism are connected to each other, and the loading clamping mechanism slides on the linear rail to the two translation mechanisms, and at the same time, the unloading mechanism pushes the two processed cylinders to the transport roller for unloading. Although the equipment mentions processing the cylinder body during transportation through the transport roller and rotation and movement of the translation mechanism, the description of the precise positioning guarantee measures for the cylinder body in each link is not detailed enough. For example, whether the cylinder body can be accurately aligned with the processing position in the processing equipment after rotating 90° on the translation mechanism, and whether the loading clamping mechanism can ensure that the cylinder body is in the precise position required for processing when clamping, etc. There is a risk of affecting the processing accuracy due to inaccurate positioning. Summary of the invention

[0005] The object of the present invention is to provide an automatic feeding mechanism for machining an engine cylinder block to solve the following technical problems raised in the background technology:

[0006] In the engine circulation process in the prior art, manual handling or simple mechanical assisted operation is mostly required, which not only consumes a lot of manpower and time, but also the links are not tightly connected and there is a lot of waiting time, making the entire production process incoherent, which seriously restricts the improvement of production efficiency.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] An automatic feeding mechanism for machining an engine cylinder body comprises a feeding rack, a door opening and closing mechanism and a fixture matched with the feeding rack; the feeding rack is provided with a lifting mechanism and a feeding mechanism, the lifting mechanism is used to drive the cylinder body to move up and down, and the feeding mechanism is used to drive the cylinder body to move horizontally; the door opening and closing mechanism is linked with the feeding mechanism, and the door opening and closing mechanism is used to allow the cylinder body to enter or leave a machining center.

[0009] Furthermore, the feeding mechanism includes an upper slider, a lower slider, an upper blocking block, a lower blocking block, a left linear rail mounting block, a right linear rail mounting block and a feeding cylinder; wherein the lower slider is slidably connected to the lifting mechanism, and the upper slider is mounted on the lower slider through the left linear rail mounting block and the right linear rail mounting block; the lower blocking block and the lower blocking block are fixedly connected to the feeding rack, the lower blocking block is used to block the lower slider, the upper blocking block is used to block the upper slider, the left linear rail mounting block and the right linear rail mounting block are connected together through a connecting plate, the feeding cylinder is fixedly connected to the lifting mechanism, and the piston rod of the feeding cylinder is connected to the connecting plate.

[0010] Furthermore, a chain and two gears for driving the chain to rotate are designed on the left linear rail mounting block, an upper connecting block and a lower connecting block are respectively installed on the upper and lower sides of the chain, an upper mating block is fixedly connected to the upper slider, and a lower mating block is fixedly connected to the lower slider, the upper connecting block is connected to the upper mating block, and the lower connecting block is connected to the lower mating block.

[0011] Furthermore, a guide bar is arranged on the upper sliding block, and a loading positioning pin is arranged on the guide bar; and a pre-positioning head is arranged on the side of the guide bar.

[0012] Furthermore, a nylon pad is provided on the guide bar.

[0013] Furthermore, the lifting mechanism includes a mounting plate, upper and lower sliders and a lifting cylinder, wherein the lifting cylinder is fixed to the center of the loading rack, the mounting plate is connected to the piston rod of the lifting cylinder, the upper and lower sliders are fixed to the bottom of the mounting plate, and the upper and lower sliders are also slidably connected to the loading rack; the lower slider is slidably connected to the mounting plate.

[0014] Furthermore, a hydraulic buffer and a position sensor are installed on the loading rack.

[0015] Furthermore, the door opening and closing mechanism includes two door opening and closing cylinders and two piston rod connectors installed on the door, and the piston rods of the door opening and closing cylinders are connected to the door via the piston rod connectors.

[0016] Furthermore, fixed positioning pins are provided on the fixture, and the positioning pins on the guide bar are distributed inside the positioning pins of the fixture.

[0017] An engine cylinder body feeding method, using an engine cylinder body processing automatic feeding mechanism, comprises the following steps:

[0018] A1, after the cylinder body from the previous process flows in, it is manually pushed and placed on the guide bar of the automatic feeding rack. With the help of the feeding positioning pins set on the guide bar and the pre-positioning head on the side, the cylinder body is accurately positioned initially to make the cylinder body in a suitable starting position;

[0019] A2, the staff presses the start switch on the loading rack, triggering the entire automatic loading mechanism to start operation;

[0020] A3, the lifting mechanism starts, and the upper and lower sliders on the lifting mechanism slide upward along the track of the loading rack, driving the cylinder body to rise synchronously, so that the position of the loading rack guide bar and the cylinder body is higher than the loading rack;

[0021] A4, the feeding mechanism cylinder starts to work, the piston rod of the feeding cylinder extends and retracts to drive the upper and lower slide blocks to slide, and the guide bar transports the cylinder body into the equipment;

[0022] A5, the lifting cylinder descends, driving the upper and lower sliders to slide down along the loading rack, and placing the cylinder body into the fixed positioning pin on the fixture;

[0023] A6, the piston rod of the feeding mechanism cylinder is retracted, the guide bar is retracted to the position of the loading rack, and the cylinder body is clamped on the fixture;

[0024] A7, the door opening and closing mechanism starts to work, the door opening and closing cylinder is connected to the equipment door through the piston rod and the piston rod connector. Under program control, the cylinder piston rod extends to drive the equipment door to close;

[0025] A8, after the equipment door is closed, the processing program automatically starts and the cylinder body begins to be processed until the cylinder body is processed;

[0026] A9, after the cylinder body is processed, the clamp is loosened to release the pressure on the cylinder body; the piston rod of the door opening and closing cylinder is retracted, and the equipment door is opened driven by the piston rod connector;

[0027] A10, the piston rod of the feeding cylinder extends again, and the guide bar enters the equipment driven by the upper slider, ready to retrieve the cylinder body;

[0028] A11, the lifting cylinder rises, so that the cylinder body is separated from the fixed positioning pin, and the cylinder body is placed in the loading positioning pin of the guide bar, completing the transfer of the cylinder body from the fixture to the guide bar;

[0029] A12, the piston rod of the feeding cylinder retracts, and the guide bar brings the cylinder body to slide back under the action of the upper slider, sending the cylinder body back to the loading rack. At this time, the cylinder body is located on the guide bar;

[0030] A13, the lifting mechanism descends, driving the upper and lower slide blocks to slide down, placing the cylinder body on the loading rack, and then the cylinder body can be pushed into the subsequent process by manual or other external means.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention can accurately position and firmly clamp the engine cylinder block through the fixture positioning structure, thereby preventing the cylinder block from displacement, shaking, etc. during the processing, so that the processing tool can act on the corresponding part of the cylinder block, which is helpful to produce high-quality engine cylinder block products that meet strict standards.

[0033] The lifting mechanism of the present invention can realize accurate switching of the cylinder body between different height positions, such as accurately lifting the cylinder body to a suitable height for transportation by a feeding mechanism, or lowering it back to the loading rack after processing, thereby avoiding the subsequent processing being affected by inaccurate height position, further ensuring the accuracy of each link in the entire processing flow, and indirectly improving the processing accuracy.

[0034] The feeding mechanism of the present invention relies on ingenious design to realize smooth horizontal conveyance of the cylinder body, and can accurately send the cylinder body from the initial position to the fixture for clamping, and then retrieve it and send it back to the loading rack after processing, ensuring the continuity of the loading and circulation process. At the same time, the door opening and closing mechanism is linked with the feeding mechanism to automatically control the opening and closing of the door in a timely manner, so that the cylinder body can enter and exit the processing center in an orderly manner, and the entire process is automatically connected, reducing manual intervention and operation waiting time, thereby effectively improving production efficiency.

[0035] Since the entire loading mechanism is automated, a series of operations from loading, conveying, entering and exiting the machining center to the final circulation of the cylinder body do not require too much manual operation, which greatly reduces manpower input and labor costs. At the same time, it also reduces the risks caused by manual operation errors and improves production stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is a structural schematic diagram of the machining center and the door opening and closing mechanism of the present invention;

[0038] Figure 3 This is one of the structural schematic diagrams of the lifting mechanism and the feeding mechanism of the present invention;

[0039] Figure 4 This is the second structural schematic diagram of the lifting mechanism and the feeding mechanism of the present invention;

[0040] Figure 5 It is a schematic diagram of the guide bar structure of the present invention;

[0041] Figure 6 It is one of the structural schematic diagrams of the feeding mechanism of the present invention;

[0042] Figure 7 This is the second structural schematic diagram of the feeding mechanism of the present invention;

[0043] Figure 8 This is one of the structural schematic diagrams of the lifting mechanism of the present invention;

[0044] Fig. 9 This is the second structural schematic diagram of the lifting mechanism of the present invention.

[0045] Markings in the figure: 1-door opening and closing mechanism, 2-feeding rack, 3-machining center, 4-door opening and closing cylinder, 5-piston rod connector, 6-lifting mechanism, 7-feeding mechanism, 9-guide bar, 10-feeding positioning pin, 11-nylon pad, 12-pre-positioning head, 13-mounting plate, 14-lower blocking block, 15-upper blocking block, 16-connecting plate, 17-right linear rail mounting block, 18-feeding cylinder, 19-upper slider, 20-lower slider, 21-left linear rail mounting block, 22-upper and lower sliders, 23-upper connecting block, 24-lower connecting block, 25-gear, 27-hydraulic buffer, 28-lifting cylinder. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Example:

[0048] An automatic feeding mechanism for processing an engine cylinder body includes a feeding frame 2, a door opening and closing mechanism 1, and a fixture matched with the feeding frame 2; a lifting mechanism 6 and a feeding mechanism 7 are arranged on the feeding frame 2, the lifting mechanism 6 is used to drive the cylinder body to move up and down, and the feeding mechanism 7 is used to drive the cylinder body to move horizontally; the door opening and closing mechanism 1 is linked with the feeding mechanism 7, and the door opening and closing is used to allow the cylinder body to enter or leave the processing center 3. Among them, the feeding frame 2 is the basic frame and bearing platform of the entire automatic feeding mechanism, providing a stable installation and placement space for the lifting mechanism 6, the feeding mechanism 7, the engine cylinder body to be processed, etc., to ensure that various components can be arranged in order and work together thereon. The design of the lifting mechanism 6 is due to the fact that the engine cylinder body needs to be at different heights at different stages of the processing process, such as being lifted from the initial placement position to a suitable height so that the feeding mechanism 7 can transport it to the fixture, or being lowered from the fixture position and placed back on the loading rack 2 after processing is completed. The lifting mechanism 6 provides vertical power and precise position control to achieve accurate movement of the cylinder body between these different heights, ensuring the smooth vertical operation in the loading process and avoiding the impact of inaccurate height position on subsequent processing. The feeding mechanism 7 is responsible for pushing and transporting the engine cylinder body in the horizontal direction, so that the cylinder body can be accurately sent to the fixture in the machining center 3 for clamping from the initial position on the loading rack 2 along the set path, and after processing is completed, the cylinder body is retrieved from the fixture and sent back to the loading rack 2. It is a key part to achieve horizontal position transfer of the cylinder body and ensure the continuity of the loading and circulation process. The door opening and closing mechanism 1 cooperates with the feeding mechanism 7. When the feeding mechanism 7 delivers the cylinder body to the door of the machining center 3, the door opening and closing mechanism 1 can open the door in time to allow the cylinder body to enter the machining center 3 smoothly. When the cylinder body is processed and the feeding mechanism 7 is ready to retrieve the cylinder body, it can close the door in time to ensure that the processing environment is not disturbed by the outside world, and then open the door again to facilitate the cylinder body to leave, which plays an important role in controlling the internal environment of the machining center 3 and ensuring the orderly entry and exit of the cylinder body. The clamp is used to accurately position and firmly clamp the cylinder body through its own precise positioning structure, such as the fixed positioning pins, after the cylinder body is delivered to the machining center 3 by the feeding mechanism 7, to ensure that the cylinder body will not be displaced or shaken during the processing, thereby ensuring the processing accuracy and quality. It is a key component to ensure that the engine cylinder body is in a stable state during processing.

[0049] The loading rack 2 is the basic bearing part of the whole mechanism, and is carefully equipped with a fully functional lifting mechanism 6 and a flexible and efficient feeding mechanism 7. Among them, the lifting mechanism 6, with its stable and powerful power output and precise transmission structure, is specifically used to drive the engine cylinder body to move up and down smoothly and orderly in the vertical direction, ensuring that the cylinder body can accurately switch between different height positions; and the feeding mechanism 7, relying on the ingenious mechanical structure and power transmission design, is mainly used to drive the engine cylinder body to move smoothly horizontally along a predetermined route in the horizontal direction, so as to realize the transfer of the cylinder body between different working areas. The door opening and closing mechanism 1 and the feeding mechanism 7 cooperate with each other through an ingenious linkage mechanism, and can be opened and closed in time, and can strictly and orderly allow the engine cylinder body to smoothly enter or safely leave the machining center 3, ensuring the orderliness of the cylinder body flow in the entire machining process and the stability of the machining environment.

[0050] In a preferred embodiment, the feeding mechanism 7 includes an upper slider 19, a lower slider 20, an upper blocking block 15, a lower blocking block 14, a left linear rail mounting block 21, a right linear rail mounting block 17 and a feeding cylinder 18; wherein, the lower slider 20 is slidably connected to the lifting mechanism 6, and the upper slider 19 is installed on the lower slider 20 through the left linear rail mounting block 21 and the right linear rail mounting block 17; the lower blocking block 14 and the lower blocking block 14 are fixed to the feeding frame, the lower blocking block 14 is used to block the lower slider 20, the upper blocking block 15 is used to block the upper slider 19, the left linear rail mounting block 21 and the right linear rail mounting block 17 are connected together through the connecting plate 16, the feeding cylinder 18 is fixed to the lifting mechanism 6, and the piston rod of the feeding cylinder 18 is connected to the connecting plate 16.

[0051] Among them, the lower slider 20 provides a stable support foundation for the upper slider 19, and it is slidably connected to the lifting mechanism 6, so that the movement of the entire feeding mechanism 7 is based on a stable structure. At the same time, during the feeding process, it moves in coordination with the upper slider 19 to jointly complete the horizontal conveying task of the cylinder body. The upper slider 19 is a key moving component in the upper layer of the feeding mechanism 7. On the one hand, it participates in the construction of a double-layer slider structure through cooperation with the lower slider 20 and related mounting blocks, expanding the feeding stroke range; on the other hand, it is directly connected to the piston rod of the feeding cylinder 18, receives power transmission from the piston rod, drives itself and the lower slider 20 to move horizontally, thereby realizing the horizontal push of the engine cylinder body. The upper blocking block 15 and the lower blocking block 14 respectively play a precise limiting role on the upper slider 19 and the lower slider 20. By limiting the maximum stroke of the slider, the slider is prevented from derailing or colliding with other components due to excessive sliding, ensuring that each feeding operation of the feeding mechanism 7 can be completed accurately within a preset and reasonable stroke range, thereby ensuring the accuracy of feeding and the operation stability of the entire feeding mechanism 7. The left-side linear rail mounting block 21 and the right-side linear rail mounting block 17 are key intermediate components connecting the upper slider 19 and the lower slider 20. They not only realize the reliable installation of the upper slider 19 on the lower slider 20 from a physical structure, but also provide accurate guidance for the sliding of the upper slider 19, so that the upper slider 19 can move smoothly and stably along a predetermined horizontal direction. The feeding cylinder 18 serves as the power core of the feeding mechanism 7. It provides horizontal driving force for the upper slider 19 through the telescopic movement of the piston rod. By means of the connection and cooperation with each slider and related components, it transmits the power generated by itself to the entire feeding mechanism 7, thereby driving the cylinder body to move in the horizontal direction.

[0052] In a preferred embodiment, a chain and two gears 25 for driving the chain to rotate are designed on the left linear rail mounting block 21, an upper connecting block 23 and a lower connecting block 24 are respectively installed on the upper and lower sides of the chain, an upper mating block is fixedly connected to the upper slider 19, and a lower mating block is fixedly connected to the lower slider 20, the upper connecting block 23 is connected to the upper mating block, and the lower connecting block 24 is connected to the lower mating block. Through this design, when the piston rod of the feeding cylinder 18 begins to extend, the left linear rail mounting block 21 and the right linear rail mounting block 17 move, and at the same time, the chain drives the upper slider 19 and the lower slider 20 to move. After the upper slider 19 and the lower slider 20 move a certain distance, the lower slider 20 is subjected to the friction force, and the lower slider 20 moves relative to the left linear rail mounting block 21 and the right linear rail mounting block 17. That is, the lower slider 20 moves backward relative to the left linear rail mounting block 21 and the right linear rail mounting block 17. At the same time, the lower slider 20 drives the chain and the gear 25, and drives the upper slider 19 to move forward relative to the left linear rail mounting block 21 and the right linear rail mounting block 17 through the chain. That is to say, when the piston rod of the feeding cylinder 18 extends, the lower slider 20 and the upper slider 19 also move relative to each other. This design increases the flexibility of the feeding mechanism 7, ensuring that the feeding mechanism 7 can quickly and stably operate the cylinder body to the machining center 3.

[0053] In a preferred embodiment, the upper slider 19 is provided with a guide bar 9, and the guide bar 9 is provided with a loading positioning pin 10; the side of the guide bar 9 is provided with a pre-positioning head 12. Among them, the guide bar 9 is a key component that supports the engine cylinder body and assists its movement. It provides a platform for the cylinder body to be placed, and with the help of the stable connection with the upper slider 19, it moves horizontally with the upper slider 19, which is an important support for the cylinder body to be transferred from one position to another in the horizontal direction, ensuring the stability of the cylinder body conveying process. The loading positioning pin 10 is the core element for achieving accurate positioning of the engine cylinder body. Through the cooperation with the corresponding positioning holes on the cylinder body, the specific position of the cylinder body on the guide bar 9 is strictly limited, providing an accurate starting position reference for a series of subsequent operations such as lifting, feeding, and placing the fixture, effectively avoiding problems such as loading failure and processing errors caused by inaccurate cylinder position, and ensuring the accuracy of the entire loading and processing process. The pre-positioning head 12 plays an important role in the initial stage of placing the cylinder body on the guide bar 9. It can assist the cylinder body in rapid posture adjustment and preliminary positioning from the side, improve the efficiency of the cylinder body's coordination with the loading positioning pin 10, and enable the cylinder body to enter the precise positioning state faster and more accurately, thereby enhancing the reliability and smoothness of the entire positioning process, and cooperating with the loading positioning pin 10 to ensure the accuracy and efficiency of the cylinder body positioning.

[0054] In a preferred embodiment, a nylon pad 11 is provided on the guide bar 9. Since the engine cylinder body usually has high precision requirements, the surface quality is very important. The nylon pad 11 is relatively soft and has a certain elasticity. When the cylinder body is placed on the guide bar 9 or moves on the guide bar 9, it can effectively avoid scratches, wear and tear caused by direct contact between the cylinder body and the guide bar 9, and well protect the appearance and surface quality of the cylinder body, ensuring that the cylinder body meets the quality standards when entering the subsequent processing links. In addition, during the movement of the cylinder body, if it directly contacts and rubs with the guide bar 9, it is easy to generate loud noise and vibration, and the nylon pad 11 can play a buffering role, absorb part of the vibration caused by the movement, and reduce the harsh noise caused by friction, creating a relatively quiet and stable feeding environment, and is also conducive to extending the service life of the relevant components of the entire feeding mechanism. Moreover, the presence of the nylon pads 11 can help the cylinder body to maintain a better stable state to a certain extent. They make the contact of the cylinder body on the guide bar 9 more stable and uniform, avoiding the cylinder body from shaking, deflecting and other unstable conditions due to the slight unevenness on the surface of the guide bar 9, and indirectly help the positioning structures such as the loading positioning pins 10 to position the cylinder body more accurately, thereby ensuring the accuracy of the loading process.

[0055] In a preferred embodiment, the lifting mechanism 6 includes a mounting plate 13, upper and lower sliders 22 and a lifting cylinder 28, wherein the lifting cylinder 28 is fixed to the center of the loading rack 2, the mounting plate 13 is connected to the piston rod of the lifting cylinder 28, the upper and lower sliders 22 are fixed to the bottom of the mounting plate 13, and the upper and lower sliders 22 are also slidably connected to the loading rack 2; the lower slider 20 is slidably connected to the mounting plate 13. Among them, the mounting plate 13 is a key component connecting the lifting cylinder 28 and the upper and lower sliders 22. On the one hand, it receives the power from the piston rod of the lifting cylinder 28, transmits the power to the upper and lower sliders 22, and drives the upper and lower sliders 22 to achieve vertical movement; on the other hand, it provides a stable installation foundation for the upper and lower sliders 22, and as a platform that supports the engine cylinder body indirectly through the upper and lower sliders 22 and other structures, it must ensure that it has sufficient strength and stability to ensure that the entire lifting mechanism 6 will not have structural problems due to the load-bearing weight during operation, and ensure the reliability of the cylinder body lifting operation. The sliding connection between the upper and lower sliders 22 and the loading rack 2 realizes the smooth movement of the lifting mechanism 6 in the vertical direction. Through the smooth sliding process, the mounting plate 13 and the cylinder body and other components are accurately adjusted in the vertical direction. It is a key link to ensure that the lifting mechanism 6 can move up and down according to the predetermined trajectory and realize the precise lifting of the cylinder body. At the same time, its stable connection with the mounting plate 13 also ensures the integrity and reliability of the overall structure. The lifting cylinder 28 serves as a power source. It drives the piston rod to perform telescopic movement through the change of internal gas pressure, thereby providing a vertical driving force for the mounting plate 13 and the upper and lower sliders 22 connected thereto, so that the entire lifting mechanism 6 can generate upward or downward movement, meeting the requirements of the engine cylinder body to change its position in the vertical direction at different processing stages. It is the power core to realize the cylinder body lifting operation and determines whether the lifting action can be carried out smoothly and stably. The lower slider 20 can slide horizontally on the mounting plate 13, and then cooperate with other components in the feeding mechanism 7 to realize the horizontal feeding of the cylinder body and cooperate with the lifting action of the lifting mechanism 6, thereby ensuring the continuity and coordination of the horizontal and vertical actions of the entire feeding mechanism, ensuring that the cylinder body can be smoothly moved from one position to another, and completing the different operation steps in the entire feeding process.

[0056] In a preferred embodiment, a hydraulic buffer 27 and a position sensor are installed on the loading rack 2. During the movement of the engine cylinder body, when the moving parts are close to the stroke limit, the impact force caused by inertia can be effectively buffered, and the loading rack 2, the lifting mechanism 6 and other related parts are prevented from being deformed and damaged due to sudden impact, thereby extending the service life of the entire loading mechanism and reducing the maintenance cost of the equipment. The position sensor monitors the position changes of key components on the loading rack 2 in real time, such as the upper and lower sliders 22 in the lifting mechanism 6, the upper and lower sliders 20 in the feeding mechanism 7, etc., converts the actual position information into electrical signals and accurately feeds back to the control system, so that the staff can observe the status of each component. Based on the feedback position signal, the control system can accurately start and stop the lifting mechanism 6, the feeding mechanism 7, etc., according to the preset program logic, and control the operation of speed adjustment, etc., to ensure that the connection of each link in the entire loading process is accurate and correct, and realize the precise and orderly performance of a series of actions such as vertical lifting, horizontal feeding and coordination with the clamp of the engine cylinder body, which greatly improves the automation and accuracy of the loading process.

[0057] It should be noted that the control system at least includes a core processor, a storage unit, a sensor structure, an operation button interface, a cylinder control interface, an indicator light interface, a software system and a parameter setting module. Based on the feedback position signal, the control system can accurately start and stop the lifting mechanism 6, the feeding mechanism 7, etc., and adjust the speed according to the preset program logic, ensuring that the connection of each link in the entire feeding process is accurate, and realizing the precise and orderly execution of a series of actions such as the vertical lifting and lowering of the engine cylinder, the horizontal feeding, and the coordination with the fixture, which greatly improves the automation and accuracy of the feeding process.

[0058] In a preferred embodiment, the door opening and closing mechanism 1 includes two door opening and closing cylinders 4 and two piston rod connectors 5 installed on the door, and the piston rods of the door opening and closing cylinders 4 are connected to the door through the piston rod connectors 5. Among them, the door opening and closing cylinders 4 serve as the power source of the door opening and closing mechanism 1, and rely on the change of internal gas pressure to drive the piston rod to perform telescopic movement, thereby providing the required power for the opening and closing of the door. The piston rod connector 5 acts as a bridge between the door opening and closing cylinders 4 and the door, playing the role of connection and power transmission. On the one hand, it is firmly connected to the piston rod to ensure that it can bear the force from the piston rod; on the other hand, it is closely connected to the door, effectively transmitting the received power to the door, driving the door to rotate or translate in a predetermined manner, thereby realizing accurate opening and closing of the door.

[0059] In a preferred embodiment, a fixed locating pin is provided on the fixture, and the locating pins on the guide bar 9 are distributed on the inner side of the fixture locating pin. When the engine cylinder body is transported to the fixture for processing, a close and precise matching relationship is formed between the fixed locating pin and the locating hole on the cylinder body, and strict positioning restrictions are imposed on the cylinder body from multiple directions and angles, and the exact position of the cylinder body in the fixture is clearly defined, providing an accurate and correct reference for various subsequent processing operations. For example, when boring holes, precise cylinder body positioning can ensure that the boring tool accurately bores the inner wall of the cylinder body along a preset trajectory, ensuring that the bored hole diameter, hole depth and hole position accuracy meet the design requirements, avoiding quality problems such as eccentricity and aperture error in the processed hole due to slight deviation in the cylinder body position, thereby ensuring the processing accuracy of various parts of the engine cylinder body. When the clamping device of the fixture clamps the cylinder body, the fixed locating pin plays a core positioning basic role. They enable the cylinder body to be firmly held in the preset accurate position after being clamped, and will not be displaced or shaken due to external factors such as the cutting force generated by the cutting tool during processing and the vibration caused by the operation of the machine tool. Just like a solid foundation when building a high-rise building, the fixed positioning pins provide a strong guarantee for the stability of the cylinder body during processing, which in turn helps to improve the overall quality of the product and ensure that the various performance indicators of the engine cylinder body meet the expected standards.

[0060] An engine cylinder body feeding method, using an engine cylinder body processing automatic feeding mechanism, comprises the following steps:

[0061] A1, after the cylinder body from the previous process flows in, it is manually pushed and placed on the guide bar 9 of the automatic feeding rack 2. With the help of the feeding positioning pin 10 provided on the guide bar 9 and the pre-positioning head 12 on the side, the cylinder body is accurately and initially positioned so that the cylinder body is in a suitable starting position;

[0062] A2, the staff presses the start switch on the loading rack 2, triggering the entire automatic loading mechanism to start operation;

[0063] A3, the lifting mechanism 6 is started, and the upper and lower sliders 22 on the lifting mechanism 6 slide upward along the track of the loading rack 2, driving the cylinder body to rise synchronously, so that the position of the guide bar 9 of the loading rack 2 and the cylinder body is higher than the loading rack 2;

[0064] A4, the cylinder of the feeding mechanism 7 starts to work, the piston rod of the feeding cylinder 18 is extended and retracted to drive the upper slider 19 and the lower slider 20 to slide, and the guide bar 9 transports the cylinder body into the equipment;

[0065] A5, the lifting cylinder 28 descends, driving the upper and lower slide blocks 22 to slide downward along the loading rack 2, and placing the cylinder body into the fixed positioning pin on the fixture;

[0066] A6, the piston rod of the cylinder of the feeding mechanism 7 is retracted, the guide bar 9 is retracted to the position of the loading rack 2, and the cylinder body is clamped on the fixture;

[0067] A7, the door opening and closing mechanism 1 starts to work, the door opening and closing cylinder 4 is connected to the equipment door through the piston rod and the piston rod connector 5. Under program control, the cylinder piston rod extends to drive the equipment door to close;

[0068] A8, after the equipment door is closed, the processing program automatically starts and the cylinder body begins to be processed until the cylinder body is processed;

[0069] A9, after the cylinder body is processed, the clamp is loosened to release the pressure on the cylinder body; the piston rod of the door opening and closing cylinder 4 is retracted, and the equipment door is opened under the drive of the piston rod connector 5;

[0070] A10, the piston rod of the feeding cylinder 18 extends again, and the guide bar 9 enters the equipment driven by the upper slider 19, ready to retrieve the cylinder body;

[0071] A11, the lifting cylinder 28 rises, so that the cylinder body is separated from the fixed positioning pin, and the cylinder body is placed in the loading positioning pin 10 of the guide bar 9, completing the transfer of the cylinder body from the fixture to the guide bar 9;

[0072] A12, the piston rod of the feeding cylinder 18 retracts, and the guide bar 9 slides the cylinder body back under the action of the upper slider 19, and sends the cylinder body back to the feeding rack 2. At this time, the cylinder body is located on the guide bar 9;

[0073] A13, the lifting mechanism 6 descends, driving the upper and lower slide blocks 22 to slide down, placing the cylinder body on the loading rack 2, and then the cylinder body can enter the subsequent process by manual or other external pushing methods.

[0074] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0075] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic feeding mechanism for engine cylinder processing, characterized in that: It comprises a loading rack (2), a door opening and closing mechanism (1), and a clamp matching the loading rack (2); The loading rack (2) is provided with a lifting mechanism (6) and a feeding mechanism (7), wherein the lifting mechanism (6) is used to drive the cylinder body to move up and down, and the feeding mechanism (7) is used to drive the cylinder body to move horizontally; The door opening and closing mechanism (1) is linked with the feeding mechanism (7), and the door opening and closing mechanism is used to allow the cylinder body to enter or leave the machining center (3).

2. The automatic feeding mechanism for machining an engine cylinder block according to claim 1, characterized in that: The feeding mechanism (7) comprises an upper slider (19), a lower slider (20), an upper blocking block (15), a lower blocking block (14), a left linear rail mounting block (21), a right linear rail mounting block (17) and a feeding cylinder (18); wherein the lower slider (20) is slidably connected to the lifting mechanism (6), and the upper slider (19) is mounted on the lower slider (20) via the left linear rail mounting block (21) and the right linear rail mounting block (17). The lower blocking block (14) and the lower blocking block (14) are fixedly connected to the feeding frame, the lower blocking block (14) is used to block the lower sliding block (20), the upper blocking block (15) is used to block the upper sliding block (19), the left linear rail mounting block (21) and the right linear rail mounting block (17) are connected together through a connecting plate (16), the feeding cylinder (18) is fixedly connected to the lifting mechanism (6), and the piston rod of the feeding cylinder (18) is connected to the connecting plate (16).

3. The automatic feeding mechanism for machining an engine cylinder block according to claim 2, characterized in that: A chain and two gears (25) for driving the chain to rotate are designed on the left linear rail mounting block (21); an upper connecting block (23) and a lower connecting block (24) are respectively installed on the upper and lower sides of the chain; an upper matching block is fixedly connected to the upper slider (19); a lower matching block is fixedly connected to the lower slider (20); the upper connecting block (23) is connected to the upper matching block, and the lower connecting block (24) is connected to the lower matching block.

4. The automatic feeding mechanism for machining an engine cylinder block according to claim 3, characterized in that: A guide bar (9) is arranged on the upper slide block (19), and a loading positioning pin (10) is arranged on the guide bar (9); a pre-positioning head (12) is arranged on the side of the guide bar (9).

5. The automatic feeding mechanism for machining an engine cylinder block according to claim 4, characterized in that: A nylon pad (11) is arranged on the guide bar (9).

6. The automatic feeding mechanism for machining an engine cylinder block according to claim 5, characterized in that: The lifting mechanism (6) comprises a mounting plate (13), upper and lower sliders (22) and a lifting cylinder (28), wherein the lifting cylinder (28) is fixedly connected to the center of the loading rack (2), the mounting plate (13) is connected to the piston rod of the lifting cylinder (28), the upper and lower sliders (22) are fixedly connected to the bottom of the mounting plate (13), and the upper and lower sliders (22) are also slidably connected to the loading rack (2); the lower slider (20) is slidably connected to the mounting plate (13).

7. The automatic feeding mechanism for machining an engine cylinder block according to claim 6, characterized in that: An oil pressure buffer (27) and a position sensor are installed on the loading rack (2).

8. The automatic feeding mechanism for machining an engine cylinder block according to claim 7, characterized in that: The door opening and closing mechanism (1) comprises two door opening and closing cylinders (4) and two piston rod connectors (5) mounted on the door, and the piston rods of the door opening and closing cylinders (4) are connected to the door via the piston rod connectors (5).

9. The automatic feeding mechanism for machining an engine cylinder block according to claim 8, characterized in that: The fixture is provided with a fixed positioning pin, and the positioning pins on the guide bar (9) are distributed inside the positioning pins of the fixture.

10. The automatic feeding mechanism for machining an engine cylinder block according to claim 9, characterized in that: A method for loading an engine cylinder block is included. The following steps are involved: A1, after the cylinder body from the previous process flows in, it is manually pushed and placed on the guide bar (9) of the automatic loading rack (2). With the help of the loading positioning pin (10) provided on the guide bar (9) and the pre-positioning head (12) on the side, the cylinder body is accurately and initially positioned so that the cylinder body is in a suitable starting position; A2, the staff presses the start switch on the loading rack (2), triggering the entire automatic loading mechanism to start operation; A3, the lifting mechanism (6) is started, and the upper and lower slide blocks (22) on the lifting mechanism (6) slide upward along the track of the loading rack (2), driving the cylinder body to rise synchronously, so that the position of the guide bar (9) of the loading rack (2) and the cylinder body is higher than the loading rack (2); A4, the cylinder of the feeding mechanism (7) starts to work, the piston rod of the feeding cylinder (18) extends and retracts to drive the upper slider (19) and the lower slider (20) to slide, and the guide bar (9) transports the cylinder body into the equipment; A5, the lifting cylinder (28) descends, driving the upper and lower slide blocks (22) to slide downward along the loading rack (2), and placing the cylinder body into the fixed positioning pin on the fixture; A6, the piston rod of the cylinder of the feeding mechanism (7) is retracted, the guide bar (9) is retracted to the position of the loading rack (2), and the cylinder body is clamped on the fixture; A7, the door opening and closing mechanism (1) starts to work, the door opening and closing cylinder (4) is connected to the equipment door through the piston rod and the piston rod connector (5), and under program control, the cylinder piston rod extends to drive the equipment door to close; A8, after the equipment door is closed, the processing program automatically starts and the cylinder body begins to be processed until the cylinder body is processed; A9, after the cylinder body is processed, the clamp is loosened to release the pressure on the cylinder body; the piston rod of the door opening and closing cylinder (4) is retracted, and the equipment door is opened under the drive of the piston rod connector (5); A10, the piston rod of the feeding cylinder (18) extends again, and the guide bar (9) enters the device under the drive of the upper slider (19), ready to retrieve the cylinder body; A11, the lifting cylinder (28) rises, so that the cylinder body is separated from the fixed positioning pin, and the cylinder body is placed in the loading positioning pin (10) of the guide bar (9), completing the transfer of the cylinder body from the fixture to the guide bar (9); A12, the piston rod of the feeding cylinder (18) retracts, and the guide bar (9) slides the cylinder body back under the action of the upper slider (19), and the cylinder body is sent back to the loading rack (2). At this time, the cylinder body is located on the guide bar (9); A13, the lifting mechanism (6) descends, driving the upper and lower slide blocks (22) to slide down, placing the cylinder body on the loading rack (2), and then the cylinder body can be pushed manually or by other external means to enter the subsequent process.

Images