Chain-based multifunctional servo press brake and operating method

Abstract

The present invention relates to the field of chain technology, and specifically to a chain-based multifunctional servo press brake and an operating method, comprising a load-bearing seat and a single-loop chain, wherein the load-bearing seat is provided with a lower mold seat group connected to the load-bearing seat, the lower mold seat group comprises a press-bending mold seat, and the press-bending mold seat is provided with a placement groove for carrying the single-loop chain; an upper press mold group corresponding to the lower mold seat group is provided above the load-bearing seat, the upper press mold group comprises a push rod seat which can be adjusted for up and down displacement, and the push rod seat is provided with a press-bending head which is connected to the push rod seat and performs a press-bending test on the single-loop chain on the placement groove; a connecting frame connected to the load-bearing seat is provided on the load-bearing seat, and the connecting frame is provided with a transmission component which can be adjusted for lateral sliding along the connecting frame and can convey the single-loop chain, the transmission component comprises a material conveying piece, and the material conveying piece is provided with a conveying plate which slides along the material conveying piece and conveys the single-loop chain, and the conveying plate can be adjusted for small up and down displacements.

Description

Technical Field

[0001] The present invention relates to the technical field of chains, and in particular to a multifunctional servo press brake based on a chain and an operating method thereof. Background Art

[0002] According to the national standard GB / T20947 and the international standard ISO3077 for short-link chains for lifting, the bending test (bending test) of the chain is as follows: the deflection of the T-level chain is 0.8 times the wire diameter, that is, if the chain has a wire diameter of 10mm, the displacement distance of the single-ring bending test is 8mm and there must be no defects such as breakage and cracks, otherwise it will be considered unqualified. For DAT-level and DT-level chains, there must be no defects such as breakage and cracks when the force is 2.5 times the working load given in the standard, otherwise it will be considered unqualified. At present, all manufacturers in our lifting chain industry perform this bending test on universal testing machines, which has poor test accuracy, low work efficiency, labor-intensive and time-consuming, which seriously affects the economic benefits of manufacturers. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the shortcomings of the prior art, the present invention provides a chain-based multifunctional servo press brake and an operating method. During the press bending operation of a single-ring chain, the integrated feeding and bending operations solve the problems of poor testing accuracy, extremely low work efficiency, labor-intensive and time-consuming in conventional press bending tests.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a chain-based multifunctional servo press brake, comprising a load-bearing seat and a single-loop chain, the load-bearing seat is provided with a lower mold seat group connected to the load-bearing seat, the lower mold seat group includes a press-bending die seat, and the press-bending die seat is provided with a placement groove for carrying the single-loop chain; an upper press die group corresponding to the lower mold seat group is provided above the load-bearing seat, the upper press die group includes a push rod seat that can be adjusted for up and down displacement, the push rod seat is provided with a press-bending head connected to the push rod seat and for performing a press-bending test on the single-loop chain on the placement groove; the load-bearing seat is provided with a connecting frame connected to the load-bearing seat, and the connecting frame is provided with a transmission component that can be adjusted for lateral sliding along the connecting frame and can convey the single-loop chain, the transmission component includes a material feeding piece, the material feeding piece is provided with a conveying plate that slides along the material feeding piece and conveys the single-loop chain, and the conveying plate can be adjusted for a small up and down displacement.

[0007] Optionally, a plurality of placement grooves for carrying single-loop chains of different specifications are provided in the cavity in the bending die base, and the bending end of the bending head corresponds to the vertical center point of the cavity.

[0008] Optionally, the cross-sectional shape of the cavity in the bending die base is U-shaped or V-shaped, the placement grooves are symmetrically distributed in the two side walls of the cavity from top to bottom, the cross-sectional shape of the bending head is T-shaped, the cross-sectional shape of the bending end of the bending head is U-shaped, and the thickness of the U-shaped bending end can be adaptively adjusted to single-loop chains of different specifications.

[0009] Optionally, the load-bearing seat is provided with a lower die sleeve connected to the load-bearing seat and used for supporting and limiting the bending die seat, and a cylinder seat connected to the load-bearing seat is provided above the load-bearing seat, a cylinder rod is provided in the cylinder seat for adjusting the up and down displacement along the inner wall of the cylinder seat, and the output end of the cylinder rod is connected to the push rod seat, the outer wall of the push rod seat is provided with a bending head centering hole for quick replacement of the bending head, and the bending head centering hole is provided with a screw for tightening the bending head.

[0010] Optionally, the outer wall of the push rod seat is provided with a cylinder rod guide copper pad for guiding the movement of the cylinder rod, and the outer wall of the push rod seat is provided with a limit switch bump block for auxiliary limiting the movement of the push rod seat, and the displacement of the cylinder rod is driven by the hydraulic cylinder above the cylinder seat.

[0011] Optionally, a guide rod is provided in the through slot at the discharge end of the feed piece and the conveying plate is slidably adjusted along the surface of the guide rod, and a push rod for upward movement adjustment is provided in the conveying plate and the push rod is used to limit and lock the single-loop chain. The single-loop chain enters between the two limit blocks in the support plate along the feeding piece, and the movement of the two limit blocks can be adjusted according to the specifications of the single-loop chain. After the two limit blocks collide with the two sides of the single-loop chain, the conveyor plate is moved, and the conveyor plate moves between the two limit blocks. After the chain sensor on the push rod senses it, the conveyor plate is slightly displaced for a certain distance, and then the push rod is lifted and inserted into the single-loop chain, thereby limiting the single-loop chain. After that, the conveyor plate continues to be moved, and the personnel can adjust the double threaded cap of the guide rod on the guide rod according to the center point of the bending die seat to facilitate the operation of the feed plate and avoid falling off during operation. When placing single-loop chains of different specifications, the height of the feed plate can be adjusted by the multi-stage telescopic hydraulic cylinder A until it is transported to the placement groove on the bending die seat, and finally, it can be reset.

[0012] Optionally, a limit assembly is provided above the conveying plate for limiting the movement of the single-loop chain, the limit assembly includes a support plate, a plurality of limit blocks are provided in the support plate for sliding and adjusting along the support plate, an arc groove is provided on the inner wall of the limit block corresponding to the single-loop chain, the connecting frame is provided with a sliding base for sliding along the guide rail of the connecting frame, the sliding base is provided with a load-bearing sliding block for sliding along the slide rail below the feeding member, and the load-bearing sliding block extends upward to the through groove at the discharge end of the feeding member and is hollow in the guide roller, and a return spring connected to the load-bearing sliding block and elastically returns to its original position is hollowly sleeved on the guide roller, The farthest end of the guide rod is provided with a double threaded cap of the guide rod to prevent the conveying plate from falling off. A limiter for limiting and locking the sliding of the load-bearing sliding block is also provided on the slide rail below the feed piece, and the limiter is connected to the load-bearing sliding block through a connecting piece. A multi-stage telescopic hydraulic cylinder A is provided at the top of the load-bearing sliding block, and the push rod is driven by the multi-stage telescopic hydraulic cylinder A. A chain sensing sensor A is provided at the top of the push rod, and the chain sensing sensor A can be used to control the start and stop of the multi-stage telescopic hydraulic cylinder A. A plurality of limit stoppers for limiting the sliding of the single-loop chain are provided on the inner wall of the feed piece, and the limit stoppers are connected through a rotating shaft. When the feed piece is feeding, the limiter blocks on the support plate can be adjusted, and the two limiter blocks can be adjusted to be close to each other, so that the single-loop chain stops between the two limiter blocks, thereby facilitating subsequent operations. The setting of the limit stop bar can play a certain buffering and guiding role when the single-loop chain moves downward, thereby preventing the single-loop chain from deviating from the route when it moves downward.

[0013] Optionally, the limit member is an electromagnetic control valve, the multi-stage telescopic hydraulic cylinder A is a two-stage telescopic hydraulic cylinder A, the up and down displacement adjustment of the conveying plate is driven by the coarse cylinder of the two-stage telescopic hydraulic cylinder A, the sliding of the sliding base is driven by the coarse cylinder of the two-stage telescopic hydraulic cylinder B, and the sliding of the load-bearing sliding block is driven by the fine cylinder of the two-stage telescopic hydraulic cylinder B. Two symmetrically arranged limit blocks are provided on the support plate, and the movement and closing of the two limit blocks are driven by two hydraulic cylinders respectively. The limit block is also provided with a The chain sensing sensor B senses the single-loop chain and can be used for the start and stop of the two-stage telescopic hydraulic cylinder B. The two side walls of the support plate are also provided with a return spring A connected to the limit block and elastically returning. The support plate is provided with a pad block connected to the feed piece below. The two side walls of the feed end of the support plate are provided with inclined baffles. The two side walls of the feed piece are provided with two limit bars distributed up and down, and the limit bars are provided with a return spring B connected to the side wall of the feed piece and elastically returning. The pad block can play a supporting role and also play a certain buffering role. The baffle is also provided to prevent deviation when the single-loop chain slides down.

[0014] Optionally, a machine base connected to the load-bearing base is provided below the load-bearing base and a hydraulic station for supplying oil is provided in the machine base, an electrical box for providing electricity is provided in the machine base, and an instrument button box for controlling the start and stop of the equipment is provided on the outside of the machine base, and the button functions on the instrument button box include force KN-displacement MM button, automatic-manual button, manual rise button, fault reset button, emergency stop button, automatic start button, manual descending button, bending force display KM display, bending displacement setting MM display and hydraulic oil temperature display.

[0015] An operating method of a multifunctional servo press brake based on a chain, the method comprising:

[0016] Step 1: Before work, personnel need to inspect and clean the equipment to prevent affecting the subsequent use of the equipment, and then start the equipment;

[0017] Step 2: After the equipment is started, the personnel can start the secondary telescopic hydraulic cylinder B, so that the rough cylinder in the secondary telescopic hydraulic cylinder B moves outward, thereby pushing the sliding base to move until the feeding piece conflicts with the cylinder seat. At this time, the guide rod in the feeding piece is inserted into the bending die seat. At this time, the personnel can adjust the double threaded cap of the guide rod according to the center point of the bending die seat, so as to facilitate the single-ring chain to be placed at the center point on the bending die seat;

[0018] Step 3: After that, the personnel can convey the single-loop chain by means of external conveying, so that the single-loop chain moves along the conveying piece. At this time, the single-loop chain moves to the support plate on the conveying piece. At this time, the chain sensing sensor B at the front end of the limit block senses the single-loop chain, so that it can continue to drive the fine cylinder of the secondary telescopic hydraulic cylinder B to continue to move slightly, thereby driving the conveying plate to move slightly. At this time, the chain sensing sensor A on the push rod senses the single-loop chain and continues to move a certain distance, and then drives the push rod to move upward through the secondary telescopic hydraulic cylinder A, thereby limiting the single-loop chain, and then continues to move through the fine cylinder of the secondary telescopic hydraulic cylinder B, so that the conveying plate is separated from the support plate until it enters the cylinder seat. After that, the height of the conveying plate can be adjusted through the secondary telescopic hydraulic cylinder A according to the specifications of the single-loop chain until the single-loop chain is placed on the placement groove in the bending die seat;

[0019] Step 4: After the placement is completed, reset the above equipment and prepare to transport the sequential single-loop chain;

[0020] Step 5: Then pay attention and observe whether the single-loop chain is placed in the center of the bending die seat. After it is accurate, turn on the bending equipment through the instrument button box;

[0021] Step 6: Start the hydraulic pump preheating system;

[0022] Step 7: When performing displacement bending test on T-grade chain, the force and displacement knob needs to be turned to the displacement position; when performing force bending test on DAT / DT-grade chain, the force and displacement knob needs to be turned to the force KN position;

[0023] Step 8: Then select and confirm the pre-set chain parameters of various specifications in the text;

[0024] Step 9: Turn the automatic-manual knob to the automatic mode. You can also manually press down or raise the hydraulic cylinder in the manual mode to perform pressure testing and alignment work;

[0025] Step 10: Press the automatic start button. At this time, the bending head will drop rapidly. When the pressure exceeds the factory setting of 5KN, the pressure transmitter in the system will throttle and decelerate through the PLC program. The pressure head will switch to the slow pressing mode until it is pressed down to the force control value. After pausing for 1S, it will return. The bending test is over. Then observe and check the single-loop chain.

[0026] Step 11: Finally, repeat the above steps to perform the bending test on the sequential single-link chain.

[0027] This equipment uses a high-pressure hydraulic system (4ml / r low flow and 25Mpa high pressure) to supply oil to the hydraulic cylinder (maximum pressure 40T, maximum displacement 100mm), and is operated and controlled through a pull-rope displacement sensor, pressure transmitter, photoelectric proximity switch, intelligent pressure display instrument, displacement display and equipment parameter setting operation text. Before using the equipment, strict displacement size and pressure value calibration are carried out to ensure that the output data is correct and reliable.

[0028] Functional description of the above equipment:

[0029] Equipment power supply: main power supply 380V, control power supply DV24V;

[0030] 2. Oil pressure and oil temperature control: The oil temperature in the oil tank is transmitted to the instrument panel by the temperature sensor, and exceeds the setting;

[0031] When the alarm is on, the alarm will sound and the cooling water solenoid valve will be automatically turned on;

[0032] 3. Fault reset: If the servo system fails, press the "Fault Reset" button to reset it after troubleshooting;

[0033] 4. The tempered glass protective cover should be pulled down during work to provide safety protection in case of emergencies such as improper operation and mold damage.

[0034] Compared with the prior art, the chain-based multifunctional servo press brake and operation method greatly reduce the manual operation time of personnel through its integrated feeding and press bending operations, thereby avoiding the possibility of injury to a certain extent. In addition, the structure has a high degree of accuracy during testing, thereby improving the work efficiency of its personnel to a certain extent and driving the production efficiency of the manufacturer. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the present invention;

[0036] Figure 2 For the present invention Figure 1 A schematic diagram of the structure in front view;

[0037] Figure 3 For the present invention Figure 1 A schematic diagram of the structure from a side view;

[0038] Figure 4 It is a structural schematic diagram of the upper pressing die assembly of the present invention from a front view;

[0039] Figure 5 It is a schematic structural diagram of the upper pressing die assembly of the present invention from a side view;

[0040] Figure 6 This is a schematic diagram of one structure of the bending plug of the present invention;

[0041] Figure 7 This is another schematic diagram of the structure of the bending plug of the present invention;

[0042] Figure 8 It is a structural schematic diagram of the lower mold base assembly of the present invention;

[0043] Fig. 9 This is a schematic diagram of the first structure of the bending die base of the present invention;

[0044] Fig.10 Another structural schematic diagram of the bending die base of the present invention;

[0045] Fig.11 It is a structural schematic diagram of the transmission component of the present invention;

[0046] Fig.12 It is a schematic diagram of the structure of a part of the transmission component of the present invention;

[0047] Fig.13 It is a structural schematic diagram of a multi-stage telescopic hydraulic cylinder of the present invention;

[0048] Fig.14 It is a structural schematic diagram of the limit assembly of the present invention;

[0049] Fig.15 It is a side view structural schematic diagram of the transmission component and the connecting frame of the present invention;

[0050] Fig.16 It is a schematic diagram of the structure of the connecting frame of the present invention when viewed from above.

[0051] In the figure: 1. load-bearing seat; 2. lower die seat assembly; 3. upper die assembly; 4. connecting frame; 5. single-loop chain; 6. transmission assembly; 7. bending die seat; 8. placement slot; 9. ejector seat; 10. bending ejector head; 11. material feeding piece; 12. conveying plate; 13. cavity; 14. bending end; 15. lower die sleeve; 16. cylinder seat; 17. cylinder rod; 18. hydraulic cylinder; 19. guide rod; 20. ejector; 21. limiter assembly 1. Parts; 22. Support plate; 23. Limit block; 24. Arc groove; 25. Sliding base; 26. Load-bearing sliding block; 27. Multi-stage telescopic hydraulic cylinder A; 28. Return spring; 29. ​​Double threaded cap of guide rod; 30. Limit part; 31. Two-stage telescopic hydraulic cylinder B; 32. Heightening block; 33. Baffle; 34. Limiting bar; 35. Machine base; 36. Electrical box; 37. Instrument button box; 38. Centering hole of bending head. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0053] See also Figures 1 to 16The present invention provides a technical solution: a multifunctional servo press brake based on a chain, comprising a load-bearing seat 1 and a single-loop chain 5, the load-bearing seat 1 is provided with a lower die sleeve 15 connected to the load-bearing seat 1 and used to support and limit the press-bending die seat 7, a machine base 35 connected to the load-bearing seat 1 is provided below the load-bearing seat 1, and a hydraulic station for supplying oil is provided in the machine base 35, an electrical box 36 for providing electricity is provided in the machine base 35, an instrument button box 37 for controlling the start and stop of the equipment is provided outside the machine base 35, and the button function layout on the instrument button box 37 includes a force KN-displacement MM button, an automatic-manual button, a manual rise button, a fault reset button, an emergency stop button, an automatic start button, a manual descending button, a press-bending force display KM display, MM display of bending displacement setting and hydraulic oil temperature display, a cylinder seat 16 connected to the bearing seat 1 is provided above the bearing seat 1, a cylinder rod 17 for adjusting the up and down displacement along the inner wall of the cylinder seat 16 is provided in the cylinder seat 16, and the output end of the cylinder rod 17 is connected to the push rod seat 9, the outer wall of the push rod seat 9 is provided with a bending head centering hole 38 for quickly replacing the bending head 10, and the bending head centering hole 38 is provided with a screw for fastening the bending head 10, the outer wall of the push rod seat 9 is provided with a cylinder rod guide copper pad for guiding the movement of the cylinder rod 17, the outer wall of the push rod seat 9 is provided with a limit switch bumper for auxiliary limiting the movement of the push rod seat 9, and the displacement of the cylinder rod 17 is controlled by the cylinder seat 1 6 is driven by a hydraulic cylinder 18 above the bearing seat 1, a lower die seat group 2 connected to the bearing seat 1 is provided on the bearing seat 1, the lower die seat group 2 includes a bending die seat 7, a placement groove 8 for carrying a single-ring chain 5 is provided in the bending die seat 7, a plurality of placement grooves 8 for carrying single-ring chains 5 of different specifications are provided in the cavity 13 in the bending die seat 7, a bending end 14 of the bending head 10 corresponds to the vertical center point of the cavity 13, the cross-sectional shape of the cavity 13 in the bending die seat 7 is U-shaped or V-shaped, the placement grooves 8 are symmetrically distributed in the two side walls of the cavity 13 from top to bottom, the cross-sectional shape of the bending head 10 is T-shaped, the cross-sectional shape of the bending end 14 of the bending head 10 is U-shaped and the U-shaped bending end 1 The thickness of 4 can be adaptively adjusted to the single-loop chains 5 of different specifications; an upper pressing die set 3 corresponding to the lower die set 2 is arranged above the load-bearing seat 1, and the upper pressing die set 3 includes a push rod seat 9 which can be adjusted for up and down displacement, and a bending head 10 connected to the push rod seat 9 and for performing a bending test on the single-loop chain 5 on the placement groove 8 is arranged in the push rod seat 9; a connecting frame 4 connected to the load-bearing seat 1 is arranged on the load-bearing seat 1, and the connecting frame 4 is provided with a transmission component 6 which can be adjusted for lateral sliding along the connecting frame 4 and can convey the single-loop chain 5, and the transmission component 6 includes a feeding piece 11, and a conveying plate 12 which slides along the feeding piece 11 and conveys the single-loop chain 5 is arranged in the feeding piece 11, and the conveying plate 12 can be adjusted for small up and down displacement,A guide rod 19 is provided in the through groove at the discharge end of the feed member 11, and the conveying plate 12 is slidably adjusted along the surface of the guide rod 19, a push rod 20 for upward movement adjustment is provided in the conveying plate 12, and the push rod 20 is used to limit and lock the single-loop chain 5, and a limit assembly 21 for limiting the movement of the single-loop chain 5 is provided above the conveying plate 12, and the limit assembly 21 includes a support plate 22, and a plurality of limit blocks 23 for sliding and adjusting along the support plate 22 are provided in the support plate 22, and an arc groove 24 corresponding to the single-loop chain 5 is provided on the inner wall of the limit block 23, and a sliding base 25 for sliding along the guide rail of the connecting frame 4 is provided on the connecting frame 4, and a slide base 25 is provided along the slide rail below the feed member 11 The load-bearing sliding block 26 for sliding is extended upward to the through groove at the discharge end of the feeding member 11 and is hollow with the guide rod 19. A return spring 28 connected to the load-bearing sliding block 26 and elastically returning is hollowly sleeved on the guide rod 19. The farthest end of the guide rod 19 is provided with a guide rod double threaded cap 29 for preventing the conveying plate 12 from falling off. A limit member 30 for limiting the sliding of the load-bearing sliding block 26 is also provided on the slide rail below the feeding member 11, and the limit member 30 is connected to the load-bearing sliding block 26 through a connecting member. A multi-stage telescopic hydraulic cylinder A27 is provided at the top of the load-bearing sliding block 26, and the push rod 20 is driven by the multi-stage telescopic hydraulic cylinder A27. The top of the push rod 20 is provided with a chain sensor The chain sensing sensor A can be used to control the start and stop of the multi-stage telescopic hydraulic cylinder A27. A plurality of limit bars 34 for limiting the sliding of the single-loop chain 5 are arranged on the inner wall of the feeding member 11, and the limit bars 34 are connected through a rotating shaft. The limit member 30 is an electromagnetic control valve. The multi-stage telescopic hydraulic cylinder A27 is a two-stage telescopic hydraulic cylinder A. The up and down displacement adjustment of the conveying plate 12 is driven by the rough cylinder of the two-stage telescopic hydraulic cylinder A. The sliding of the sliding base 25 is driven by the rough cylinder of the two-stage telescopic hydraulic cylinder B31. The sliding of the load-bearing sliding block 26 is driven by the fine cylinder of the two-stage telescopic hydraulic cylinder B31. Two symmetrically arranged limit blocks 23 are arranged on the support plate 22, and the two limit blocks 23 are connected through a rotating shaft. The movement and closing of the position block 23 are driven by two hydraulic cylinders respectively. The position block 23 is also provided with a chain induction sensor B for sensing the single-loop chain and the chain induction sensor B can be used for starting and stopping the two-stage telescopic hydraulic cylinder B31. The two side walls of the support plate 22 are also provided with return springs A connected to the position block 23 and elastically returning. A pad block 32 connected to the feeder 11 is provided below the support plate 22. The two side walls of the feed end of the support plate 22 are respectively provided with inclined baffles 33. Two position limit bars 34 distributed in an up-and-down shape are respectively provided on the two side walls of the feeder 11, and a return spring B connected to the side wall of the feeder 11 and elastically returning is provided below the position limit bars 34.

[0054] See also Figures 1 to 16The method of using the chain-based multifunctional servo press brake includes:

[0055] Step 1: Before work, personnel need to inspect and clean the equipment to prevent affecting the subsequent use of the equipment, and then start the equipment;

[0056] Step 2: After the equipment is started, the personnel can start the secondary telescopic hydraulic cylinder B31, so that the rough cylinder in the secondary telescopic hydraulic cylinder B31 moves outward, thereby pushing the sliding base 25 to move until the feeding member 11 conflicts with the cylinder seat 16. At this time, the guide rod 19 in the feeding member 11 is inserted into the bending die seat 7. At this time, the personnel can adjust the double threaded cap 29 of the guide rod according to the center point of the bending die seat 7, so as to facilitate the single-loop chain 5 to be placed at the center point on the bending die seat 7;

[0057] Step three: Afterwards, the personnel can convey the single-loop chain 5 by means of external conveying, so that the single-loop chain 5 moves along the feeding piece 11. At this time, the single-loop chain 5 moves to the support plate 22 on the feeding piece 11. At this time, the chain sensing sensor B at the front end of the limit block 23 senses the single-loop chain 5, so that the fine cylinder of the secondary telescopic hydraulic cylinder B31 can continue to move slightly, thereby driving the conveying plate 12 to move slightly. At this time, the chain sensing sensor A on the push rod 20 senses the single-loop chain 5 and then continues to move a certain distance. Then, the push rod 20 is driven upward by the secondary telescopic hydraulic cylinder A, thereby limiting the single-loop chain 5, and then continues to move through the fine cylinder of the secondary telescopic hydraulic cylinder B31, so that the conveying plate 12 is separated from the support plate 22 until it enters the cylinder seat 16. After that, the height of the conveying plate 12 can be adjusted according to the specifications of the single-loop chain 5 through the secondary telescopic hydraulic cylinder A until the single-loop chain is placed on the placement groove 8 in the bending die seat 7.

[0058] Step 4: After the placement is completed, the above equipment is reset and the sequential single-loop chain 5 is prepared for transportation;

[0059] Step 5: Then pay attention and observe whether the single-loop chain 5 is placed at the center of the bending die seat 7. After it is accurate, turn on the bending equipment through the instrument button box 37;

[0060] Step 6: Start the hydraulic pump preheating system;

[0061] Step 7: When performing displacement bending test on T-grade chain, the force and displacement knob needs to be turned to the displacement position; when performing force bending test on DAT / DT-grade chain, the force and displacement knob needs to be turned to the force KN position;

[0062] Step 8: Then select and confirm the pre-set chain parameters of various specifications in the text;

[0063] Step 9: Turn the automatic-manual knob to the automatic mode. You can also manually press down or raise the hydraulic cylinder in the manual mode to perform pressure testing and alignment work;

[0064] Step 10: Press the automatic start button. At this time, the bending head 10 will drop rapidly. When the pressure exceeds the factory setting of 5KN, the pressure transmitter in the system will throttle and decelerate through the PLC program, and the pressure head will switch to the slow pressing mode until it is pressed down to the force control value, and then return after a pause of 1S. The bending test is completed, and then the single-loop chain can be observed and checked;

[0065] Step 11: Finally, repeat the above steps to perform the bending test on the sequential single-link chain.

[0066] The electrical components mentioned in this article are all connected to an external main controller and 380V commercial electricity, and the main controller can be a conventional known device for control such as a computer.

[0067] To sum up, compared with the prior art, the chain-based multifunctional servo press brake and operation method, when in use, greatly reduces the manual operation time of personnel through its integrated feeding and pressing and bending operations, thereby avoiding the possibility of injury to a certain extent, and the structure has a high degree of accuracy during testing, thereby improving the work efficiency of its personnel to a certain extent and also driving the production benefits of the manufacturer.

[0068] In the description of this specification, the terms "connect", "install", "fix", "set", etc. are understood in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and the technical effect. It can also be an integral connection or a partial connection. As in this example, for ordinary technicians in this field, the specific meanings of the above terms in the present invention or invention can be understood according to the specific circumstances.

[0069] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multifunctional servo press brake based on a chain, comprising a load-bearing seat (1) and a single-loop chain (5), characterized in that: The load-bearing seat (1) is provided with a lower die seat group (2) connected to the load-bearing seat (1), the lower die seat group (2) comprising a bending die seat (7), the bending die seat (7) being provided with a placement groove (8) for carrying a single-loop chain (5); an upper pressing die group (3) corresponding to the lower die seat group (2) is provided above the load-bearing seat (1), the upper pressing die group (3) comprising a push rod seat (9) capable of upward and downward displacement adjustment, the push rod seat (9) being provided with a bending head (10) connected to the push rod seat (9) and for performing a bending test on the single-loop chain (5) on the placement groove (8);The load-bearing seat (1) is provided with a connecting frame (4) connected to the load-bearing seat (1), and the connecting frame (4) is provided with a transmission component (6) that can be adjusted to slide laterally along the connecting frame (4) and can transport the single-loop chain (5), the transmission component (6) comprises a material conveying member (11), the material conveying member (11) is provided with a conveying plate (12) that slides along the material conveying member (11) and transports the single-loop chain (5), and the conveying plate (12) can be adjusted to move up and down in a small range, a guide rod (19) is provided in a through groove at the discharge end of the material conveying member (11), and the conveying plate (12) slides along the surface of the guide rod (19). The conveying plate (12) is provided with a push rod (20) that can be moved upward and adjusted, and the push rod (20) is used to limit and lock the single-loop chain (5). A limit assembly (21) for limiting the movement of the single-loop chain (5) is provided above the conveying plate (12). The limit assembly (21) comprises a support plate (22). A plurality of limit blocks (23) that can slide and adjust along the support plate (22) are provided in the support plate (22). The inner wall of the limit block (23) is provided with an arc groove (24) corresponding to the single-loop chain (5). The connecting frame (4) is provided with a guide rail that can be adjusted along the connecting frame (4). A sliding base (25) is provided in the sliding base (25) for sliding along the slide rail below the feeding member (11), and the load-bearing slide block (26) is extended upward to the discharge end through groove of the feeding member (11) and is hollowly arranged with the guide rod (19), and a return spring (28) connected to the load-bearing slide block (26) and elastically returning is hollowly sleeved on the guide rod (19), and a guide rod double threaded cap (29) is provided at the farthest end of the guide rod (19) for preventing the conveying plate (12) from falling off, and a guide rod for sliding the load-bearing slide block (26) is also provided on the slide rail below the feeding member (11). A limit member (30) for limiting locking is provided, and the limit member (30) is connected to a load-bearing sliding block (26) through a connecting member; a multi-stage telescopic hydraulic cylinder A (27) is provided at the top of the load-bearing sliding block (26), and the push rod (20) is driven by the multi-stage telescopic hydraulic cylinder A (27); a chain sensing sensor A is provided at the top of the push rod (20), and the chain sensing sensor A can be used to control the start and stop of the multi-stage telescopic hydraulic cylinder A (27); a plurality of limit stop bars (34) for limiting the sliding of the single-loop chain (5) are provided on the inner wall of the material feeding member (11), and the limit stop bars (34) are connected through a rotating shaft. ; 2. The multifunctional servo press brake based on a chain according to claim 1, characterized in that: A plurality of placement grooves (8) for carrying single-loop chains (5) of different specifications are provided in the cavity (13) in the bending die seat (7), and a bending end (14) of the bending head (10) corresponds to the vertical center point of the cavity (13).

3. The multifunctional servo press brake based on a chain according to claim 2, characterized in that: The cross-sectional shape of the cavity (13) in the bending die seat (7) is quasi-U-shaped or quasi-V-shaped, the placement grooves (8) are symmetrically distributed in the two side walls of the cavity (13) from top to bottom, the cross-sectional shape of the bending head (10) is quasi-T-shaped, the cross-sectional shape of the bending end (14) of the bending head (10) is quasi-U-shaped, and the thickness of the U-shaped bending end (14) can be more adaptively adjusted according to single-loop chains (5) of different specifications.

4. The multifunctional servo press brake based on a chain according to claim 3, characterized in that: The load-bearing seat (1) is provided with a lower die sleeve (15) connected to the load-bearing seat (1) and used for supporting and limiting the bending die seat (7); a cylinder seat (16) connected to the load-bearing seat (1) is provided above the load-bearing seat (1); a cylinder rod (17) is provided in the cylinder seat (16) for adjusting the upward and downward displacement along the inner wall of the cylinder seat (16); and the output end of the cylinder rod (17) is connected to the push rod seat (9); the outer wall of the push rod seat (9) is provided with a bending head centering hole (38) for quickly replacing the bending head (10); and a screw for fastening the bending head (10) is provided in the bending head centering hole (38).

5. The multifunctional servo press brake based on a chain according to claim 4, characterized in that: The outer wall of the push rod seat (9) is provided with a cylinder rod guide copper pad for guiding the movement of the cylinder rod (17), and the outer wall of the push rod seat (9) is provided with a limit switch bumper for auxiliary limiting the movement of the push rod seat (9). The displacement of the cylinder rod (17) is driven by a hydraulic cylinder (18) above the cylinder seat (16).

6. The multifunctional chain-based servo press brake according to claim 5, characterized in that: The limiter (30) is an electromagnetic control valve, the multi-stage telescopic hydraulic cylinder A (27) is a two-stage telescopic hydraulic cylinder A, the up-and-down displacement adjustment of the conveying plate (12) is driven by the rough cylinder of the two-stage telescopic hydraulic cylinder A, the sliding of the sliding base (25) is driven by the rough cylinder of the two-stage telescopic hydraulic cylinder B (31), the sliding of the load-bearing sliding block (26) is driven by the fine cylinder of the two-stage telescopic hydraulic cylinder B (31), the support plate (22) is provided with two symmetrically arranged limiters (23), and the movement and closing of the two limiters (23) are driven by two hydraulic cylinders respectively, and the limiters (23) are also provided with a single-loop chain. A chain sensing sensor B is provided for sensing the movement of the chain and the chain sensing sensor B can be used for starting and stopping the two-stage telescopic hydraulic cylinder B (31). The two side walls of the support plate (22) are also provided with return springs A connected to the limit blocks (23) and capable of elastic return. A padding block (32) connected to the material feeding member (11) is provided below the support plate (22). The two side walls of the feed end of the support plate (22) are provided with inclined baffles (33). The two side walls of the material feeding member (11) are provided with two limit bars (34) distributed in an up-and-down manner, and a return spring B connected to the side wall of the material feeding member (11) and capable of elastic return is provided below the limit bars (34).

7. The multifunctional chain-based servo press brake according to claim 6, characterized in that: A machine base (35) connected to the load-bearing base (1) is provided below the load-bearing base (1), and a hydraulic station for supplying oil is provided in the machine base (35), an electrical box (36) for providing electricity is provided in the machine base (35), and an instrument button box (37) for controlling the start and stop of the equipment is provided outside the machine base (35), and the button functions on the instrument button box (37) include a force KN-displacement MM button, an automatic-manual button, a manual rise button, a fault reset button, an emergency stop button, an automatic start button, a manual descend button, a bending force display KM display, a bending displacement setting MM display, and a hydraulic oil temperature display.

8. The multifunctional chain-based servo press brake according to claim 7, characterized in that: The operation method of the multifunctional servo press brake based on a chain is characterized in that the method comprises: Step 1: Before work, personnel need to inspect and clean the equipment to prevent affecting the subsequent use of the equipment, and then start the equipment; Step 2: After the equipment is started, the personnel starts the secondary telescopic hydraulic cylinder B (31), so that the rough cylinder in the secondary telescopic hydraulic cylinder B (31) moves outward, thereby pushing the sliding base (25) to move until the feeding member (11) and the cylinder seat (16) collide with each other. At this time, the guide rod (19) in the feeding member (11) is inserted into the bending die seat (7). At this time, the personnel adjusts the double threaded cap (29) of the guide rod according to the center point of the bending die seat (7), so as to facilitate the single-loop chain (5) to be placed at the center point on the bending die seat (7); Step 3: After that, the personnel transport the single-loop chain (5) by means of external transport, so that the single-loop chain (5) moves along the conveying member (11). At this time, the single-loop chain (5) moves to the support plate (22) on the conveying member (11). At this time, the chain sensing sensor B at the front end of the limit block (23) senses the single-loop chain (5), thereby continuing to drive the fine cylinder of the secondary telescopic hydraulic cylinder B (31) to continue to move slightly, thereby driving the conveying plate (12) to move slightly. At this time, the chain sensing sensor A on the top rod (20) senses The single-loop chain (5) continues to move a certain distance, and then the secondary telescopic hydraulic cylinder A drives the push rod (20) to move upward, thereby limiting the position of the single-loop chain (5), and then continues to move through the fine cylinder of the secondary telescopic hydraulic cylinder B (31), so that the conveying plate (12) is separated from the supporting plate (22) until it enters the cylinder seat (16), and then according to the specifications of the single-loop chain (5), the height of the conveying plate (12) is adjusted by the secondary telescopic hydraulic cylinder A until the single-loop chain is placed on the placement groove (8) in the bending die seat (7); Step 4: After the placement is completed, the above equipment is reset and the sequential single-loop chain (5) is prepared for transportation; Step 5: Then pay attention to and observe whether the single-loop chain (5) is placed at the center of the bending die seat (7). After it is accurate, turn on the bending equipment through the instrument button box 37; Step 6: Start the hydraulic pump preheating system; Step 7: When performing displacement bending test on T-grade chain, the force and displacement knob needs to be turned to the displacement position; when performing force bending test on DAT / DT-grade chain, the force and displacement knob needs to be turned to the force KN position; Step 8: Then select and confirm the pre-set chain parameters of various specifications in the text; Step 9: Turn the automatic-manual knob to the automatic mode. You can also manually press down or raise the hydraulic cylinder in the manual mode to perform pressure testing and alignment work; Step 10: Press the automatic start button. At this time, the bending head (10) will drop rapidly. When the pressure exceeds the factory setting of 5KN, the pressure transmitter in the system will throttle and decelerate through the PLC program. The pressure head will switch to the slow pressing mode until it reaches the force control value and returns after a pause of 1S. The bending test is then completed. After that, the single-loop chain can be observed and checked. Step 11: Finally, repeat the above steps to perform the bending test on the sequential single-link chain.

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