Machining equipment and method for air brake through rod nut groove hole

Abstract

The invention relates to the technical field of nut slotted hole machining, and discloses machining equipment and method for an air brake through rod nut slotted hole. A punching machine assembly comprises a punching machine driving assembly and a connecting punch; the die comprises a lower die body and an upper die body. The lower die body comprises a fixing plate, an ejector plate, a positioning plate, a slotted hole punch and a discharging spring. The upper die comprises an upper punch and a connecting part which are connected with each other; the material pushing assembly comprises a linear driving assembly, a material pushing rod and an air blowing opening. Full-process automation of air brake penetrating rod nut groove hole machining is achieved, machining efficiency is improved, machining cost is reduced, and machining quality consistency is guaranteed. According to the scheme, during discharging, an additional discharging structure does not need to be arranged, discharging can be achieved only through the mold and the air blowing opening formed in the material pushing rod, the structure is simplified, and the equipment manufacturing cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of nut slot machining technology, specifically to a machining equipment and method for machining the nut slot of an air brake through rod. Background Technology

[0002] In the field of automotive parts processing, the machining of the slot hole for the nut of the air brake through rod is a crucial manufacturing step. Traditional machining methods mainly rely on large punch presses and manual feeding and unloading. This approach is not only inefficient but also costly and produces inconsistent quality, failing to meet the demands of modern industrial production for high efficiency, low cost, and high quality. Furthermore, the machining quality and consistency are difficult to guarantee. This application addresses these issues. Summary of the Invention

[0003] The purpose of this invention is to provide a processing equipment and method for the slot hole of the nut of the air brake through rod, which can realize the automated feeding, grooving and unloading processing of the slot hole of the air brake through rod, and solve the problems of low efficiency and difficulty in guaranteeing processing quality and consistency caused by the traditional processing method mainly relying on large punch presses and manual feeding.

[0004] This invention is achieved through the following technical solution.

[0005] The present invention provides a processing device for a through-rod nut slot of an air brake, comprising a feeding assembly, a pushing assembly, a punching assembly, and a mold;

[0006] The punch press assembly includes a punch press drive assembly and a connecting punch;

[0007] The mold includes a lower mold and an upper mold. The lower mold includes a fixed plate, an ejector plate, a positioning plate, a slotted punch, and a blanking spring. The fixed plate, ejector plate, and positioning plate are arranged sequentially from bottom to top. The slotted punch and blanking spring are both mounted on the fixed plate. After stamping, the blanking spring provides an upward thrust for the ejector plate. The ejector plate has a through hole for the slotted punch to pass through. The positioning plate has a positioning area that matches the shape of the nut for positioning. The upper mold includes an upper punch and a connecting part connected to each other. The connecting part is used to connect with a connecting punch. The upper punch is used to apply pressure to the nut in the positioning area.

[0008] The feeding assembly is used to deliver the nut to the opening position of the positioning area;

[0009] The pushing assembly includes a linear drive assembly, a pushing rod, and an air inlet. The linear drive assembly is used to drive the pushing rod to push the nut into the positioning area. The air inlet is located on the pushing rod and is used to unload the nut after stamping.

[0010] The entire process of machining the slot hole of the air brake through rod nut is automated by using a feeding assembly, a pushing assembly to move the nut into the stamping position, a punch assembly and a die to complete the slot stamping step, and an air outlet of the die and the pushing assembly to complete the automatic unloading. This improves machining efficiency, reduces machining costs, and ensures consistent machining quality.

[0011] Furthermore, the air inlets are provided in several groups, including at least one air inlet whose air blowing direction coincides with the center line of the positioning area and at least one air inlet whose air blowing direction has an inclined angle with the center line of the positioning area, which are respectively used to realize the air blowing and feeding of the nut and the direction adjustment of the nut before entering the positioning area.

[0012] When there is an angular deviation between the nut and the positioning area, forcefully pushing it in will cause scratches, deformation and other defects on the surface of the nut. In this case, the nut can be finely adjusted by blowing air.

[0013] Preferably, the linear drive assembly uses a pusher cylinder, and the pusher rod is the piston rod of the pusher cylinder.

[0014] Furthermore, the end of the push rod that contacts the nut is shaped to fit the nut, and three sets of air nozzles are provided at the end of the push rod that contacts the nut. The middle air nozzle coincides with the center line of the air blowing direction positioning area, and the air blowing directions of the two side air nozzles have an inclined angle with the center line of the positioning area.

[0015] Furthermore, the feeding assembly includes a vibrating feeder and a feeding track.

[0016] Furthermore, the processing equipment for the through rod nut slot of the air brake also includes a photoelectric sensor, which is used to detect whether there is material on the top plate. The photoelectric sensor is electrically connected to the pushing assembly. When the photoelectric sensor detects that the nut is delivered to the top plate, the pushing assembly starts to perform the pushing step.

[0017] Furthermore, the upper die also includes a spring pin and a spring, both of which are disposed in the upper punch. The spring pin is used to cooperate with the center hole of the nut during stamping to ensure the stability of the nut during the stamping process.

[0018] Furthermore, the processing equipment for the through rod nut slot of the air brake also includes a safety light curtain, which serves as a safety protection function. When a person triggers the safety light curtain, the equipment stops.

[0019] Furthermore, the feeding assembly, pushing assembly, punching assembly, and mold are all mounted on the housing base, and the bottom of the housing base is equipped with casters to facilitate the transfer of the equipment.

[0020] A method for machining a slotted hole for a through-type air brake rod nut, based on the aforementioned machining equipment for machining slotted holes for a through-type air brake rod nut, includes the following steps:

[0021] Feeding steps: The feeding assembly feeds the nut into the opening of the positioning area;

[0022] Pushing steps: The linear drive assembly drives the push rod to push the nut into the positioning area, and the push rod maintains its position after being pushed in.

[0023] Stamping steps: The punch drive assembly drives the connecting punch to descend, the upper punch punches down, so that the nut contacts the slot punch, completing the slot punching. At this time, the feeding spring is compressed.

[0024] Unloading steps: The push rod and the upper punch retract simultaneously, the unloading spring causes the top plate to rise, popping the nut out. At this time, the air blower blows air, sending the nut to be processed to the collection area.

[0025] Furthermore, it also includes the following steps:

[0026] If the push rod fails to push the nut into the positioning area during the pushing step, the push rod retracts. If there is an angular deviation between the nut and the positioning area at this time, the angle adjustment step is executed: the air blowing port on the push rod, which has an inclined angle between its blowing direction and the center line of the positioning area, is activated to blow the nut to rotate and adjust the angle; then the push is performed again. If it is successfully pushed in, the stamping step is executed; otherwise, the angle adjustment step is repeated.

[0027] The beneficial effects of this invention are:

[0028] The entire process of machining the slot hole for the air brake through rod nut is automated through a feeding assembly, a pushing assembly to move the nut into the stamping position, a punch assembly and a die to complete the slot stamping step, and an air inlet on the die and pushing assembly to complete the automatic unloading. This improves machining efficiency, reduces machining costs, and ensures consistent machining quality. Furthermore, this solution eliminates the need for additional unloading structures; unloading can be achieved solely through the die and the air inlet on the pushing rod, simplifying the structure and reducing equipment costs. The air inlet can also be used to adjust the nut's posture, preventing damage during the nut's positioning. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Figure 1 A schematic diagram of the overall structure of the equipment and method for machining the slot hole of the through rod nut of an air brake;

[0032] Figure 2 This is a schematic diagram of the punch press assembly.

[0033] Figure 3 This is a schematic diagram of the mold structure;

[0034] Figure 4 This is a sectional view of the mold;

[0035] Figure 5 This is a schematic diagram of the exploded structure of the mold;

[0036] Figure 6 This is an enlarged structural schematic diagram of the feeding assembly in Example 2;

[0037] In the diagram: 1. Box base; 2. Feeding assembly; 21. Vibrating feeder; 22. Feeding track; 3. Pushing cylinder; 31. Pushing rod; 32. Air pipe connector; 33. Air outlet; 4. Lighting lamp; 5. Punch press assembly; 51. Crankshaft assembly; 52. Power assembly; 53. Connecting punch; 6. Die; 61. Lower die; 611. Base plate; 612. Lower pad plate; 613. Fixing plate; 614. Top plate; 615. Positioning plate; 6151. Positioning area; 616. Fixing pin; 617. Slotted punch; 618. Feeding spring; 621. Upper die; 622. Upper punch; 622. Connecting part; 623. Spring pin; 624. Safety light curtain; 7. Nut; 8. Photoelectric sensor; 9. Detailed Implementation

[0038] The following is combined Figures 1-6 The present invention will be described in detail below.

[0039] Example 1:

[0040] The present invention provides a machining device for the slot hole of the through rod nut of an air brake, such as... Figure 1 It includes a housing 1, a feeding assembly 2, a pushing assembly, a punching assembly 5, a mold 6, a safety light curtain 7, and a photoelectric sensor 9.

[0041] The feeding assembly 2, the pushing assembly, the punching assembly 5, and the mold 6 are all mounted on the housing 1. The bottom of the housing 1 is equipped with casters to facilitate the transfer of the equipment. The housing 1 is also equipped with a lighting lamp 4, which serves as illumination during operation.

[0042] The feeding assembly 2 includes a vibrating feeder 21 and a feeding track 22 connected to the vibrating feeder 21, the feeding track 22 extending to the position of the mold 6.

[0043] like Figure 2 The punch assembly 5 includes a punch drive assembly and a connecting punch 53; the punch drive assembly includes a crankshaft assembly 51 and a power assembly 52. ​​The power assembly 52 includes a motor and a transmission structure (generally a belt, chain, or gear drive). The crankshaft assembly 51 is connected to the motor through the transmission structure, and the connecting punch 53 is connected to the crankshaft assembly 51 to achieve up and down movement.

[0044] like Figures 3-5 Mold 6 includes a lower mold 61 and an upper mold 62.

[0045] The lower die 61 includes a base plate 611, a lower pad plate 612, a fixing plate 613, a top plate 614, a positioning plate 615, a slotted punch 617, and a feeding spring 618. The base plate 611, lower pad plate 612, fixing plate 613, top plate 614, and positioning plate 615 are arranged sequentially from bottom to top. The base plate 611 is fixed on the worktable of the housing 1. The lower pad plate 612 is used to support the fixing plate 613. The slotted punch 617 and the feeding spring 618 are both installed on the fixing plate 613. The top plate 614 is connected to the feeding spring 618. In this embodiment, three sets of slotted punches 617 are provided. In other embodiments, the slotted punches 617 are arranged adaptively according to requirements.

[0046] After stamping, the unloading spring 618 is used to provide an upward thrust for the top plate 614. The spring constant of the unloading spring 618 is 200-300 N / mm. The top plate 614 is provided with a through hole for the slot punch 617 to pass through. The positioning plate 615 is provided with a positioning area 6151 for positioning the nut and matching the shape of the nut.

[0047] The upper die 62 includes an upper punch 621 and a connecting part 622 connected to each other. The connecting part 622 is used to connect with the connecting punch 53. The upper punch 621 is used to apply pressure to the nut in the positioning area 6151. The upper die 62 also includes a spring pin 623 and a spring 624. Both the spring pin 623 and the spring 624 are disposed in the central hole of the upper punch 621. The spring pin 623 is used to cooperate with the central hole of the nut during stamping to ensure the stability of the nut during the stamping process.

[0048] like Figure 6 The nut 8 has an octagonal outline, and the positioning area 6151 matches the five sides of the nut 8. The feeding track 22 of the feeding assembly 2 is used to transport the nut to the opening position of the positioning area 6151.

[0049] The feeding assembly includes a linear drive assembly, a feeding rod 31, and an air inlet 33. The linear drive assembly is used to drive the feeding rod 31 to push the nut into the positioning area 6151. The air inlet 33 is set on the feeding rod 31 and is used to unload the nut after stamping.

[0050] The blowing action of the air inlet 33 can be controlled by a valve installed at the air inlet or by an air pump.

[0051] In this embodiment, the linear drive component adopts a pusher cylinder 3, and the pusher rod 31 is the piston rod of the pusher cylinder 3. In other embodiments, the linear drive component may also adopt a hydraulic cylinder, electric cylinder or other linear drive module.

[0052] The push rod 31 is provided with an air pipe connection port 32 for supplying air to the air blowing port 33. The air pipe connection port 32 is connected to the air supply pipe of the air pump.

[0053] The end of the push rod 31 that contacts the nut is shaped to match the other three sides of the nut 8. The end of the push rod 31 and the positioning area 6151 together form an octagonal profile.

[0054] Safety light curtain 7 serves as a safety protection feature; the equipment will stop when personnel trigger safety light curtain 7.

[0055] like Figure 6 The photoelectric sensor 9 is located around the positioning area 6151, preferably a through-beam photoelectric sensor, to detect whether there is material on the top plate 614. The photoelectric sensor 9 is electrically connected to the pushing assembly and the vibrating feeder 21. When the photoelectric sensor 9 detects that the nut is fed onto the top plate 614, the pushing assembly starts to perform the pushing step.

[0056] Automatic feeding is accomplished by the feeding component 2, the nut is pushed into the stamping position by the pushing component, the slot punching step is completed by the punching component 5 in conjunction with the mold, and automatic unloading is accomplished by the air blowing port of the mold and the pushing component. Thus, the entire process of processing the slot hole of the air brake through rod nut is automated, which improves processing efficiency, reduces processing cost, and ensures consistent processing quality.

[0057] The machining method for the slotted hole of the through rod nut in an air brake includes the following steps:

[0058] 1. Feeding steps: The feeding component 2 feeds the nut 8 into the opening position of the positioning area 6151;

[0059] Start the vibrating feeder 21 and adjust the correct posture of the nut 8 through the feeding track 22. The vibration frequency range of the feeding track 22 is 50-100Hz, and the amplitude range is 0.5-2mm. The preferred vibration frequency is 60Hz and the amplitude is 1mm.

[0060] When the photoelectric sensor 9 detects the nut, the vibrating feeder 21 stops vibrating.

[0061] 2. Pushing step: The linear drive assembly drives the push rod 31 to push the nut 8 into the positioning area 6151. After being pushed in, the push rod 31 maintains its position.

[0062] Set the stroke of the pusher cylinder; start the pusher cylinder 3 to press the nut into the positioning area 6151 at a pushing speed of 0.8m / s and a pressure of 10-20MPa, preferably 15MPa;

[0063] It is preferable to set a position sensor, such as a photoelectric sensor or an image sensor, so that the pusher cylinder 3 stops after the position sensor detects that the nut is in place;

[0064] If there is dust or other impurities on the nut, the air nozzle can be used to blow air to remove the dust before pushing the material.

[0065] 3. Stamping steps: Set the pressure of the upper punch according to the material and specifications of the nut and the groove depth. The pressure range is 30-50MPa, preferably 40MPa. Start the punch assembly 5. The punch drive assembly drives the connected punch 53 to descend. The upper punch 621 punches down, so that the nut 8 contacts the three slot punches 617 to complete the slot punching. At this time, the feeding spring 618 is compressed.

[0066] 4. Unloading Step: The push rod 31 and the upper punch 621 retract simultaneously, and the unloading spring 618 causes the top plate 614 to rise. The top plate 614 is connected to the unloading spring 618, and the rising stroke is limited, thereby popping the nut 8 out of the positioning area 6151. At this time, the air blowing port 33 blows air at a pressure of 0.4-0.6MPa, preferably 0.5MPa, to blow the nut 8 to be processed to the collection area. A collection box should be set up in the collection area.

[0067] Example 2:

[0068] Based on Example 1, in this example, as Figure 6 The air blowing port 33 is provided in several groups, including at least one air blowing port whose air blowing direction coincides with the center line of the positioning area 6151 and at least one air blowing port whose air blowing direction has an inclined angle with the center line of the positioning area 6151, which are respectively used to realize the air blowing of the nut for feeding and the directional adjustment of the nut before entering the positioning area 6151.

[0069] Because the feeding track 22 will adjust the nut posture to ensure that the nut posture is correct after feeding, the nut posture will inevitably deviate due to fit error and other reasons during operation. When there is an angular deviation between the nut 8 and the positioning area 6151, forcefully pushing it in will cause scratches, deformation and other defects on the surface of the nut 8. At this time, the nut can be finely adjusted by blowing air.

[0070] like Figure 6Three sets of air inlets 33 are provided at the end of the push rod 31 that is in contact with the nut, respectively located on the three faces corresponding to the nut. The middle air inlet 33 coincides with the center line of the air blowing direction positioning area 6151, and the air blowing directions of the air inlets 33 on both sides have an inclined angle with the center line of the positioning area 6151.

[0071] The feeding step also includes the following steps:

[0072] If the push rod 31 fails to push the nut 8 into the positioning area 6151 during the pushing step, the push rod 31 retracts. At this time, if there is an angular deviation between the nut 8 and the positioning area 6151, the angle adjustment step is executed: the air blowing port 33 on the push rod 31, which has an inclined angle between its blowing direction and the center line of the positioning area 6151, is activated to blow the nut 8 to rotate and adjust the angle; then the pushing is performed again. If it is successfully pushed in, the stamping step is executed; otherwise, the angle adjustment step is repeated.

[0073] If the push rod 31 fails to push the nut 8 into the positioning area 6151, it can be judged manually and then the angle adjustment step can be initiated. Alternatively, if the push cylinder 3 does not reach the set stroke but reaches a certain set thrust, the push rod 31 can be retracted to execute the angle adjustment step. Alternatively, an image sensor can be used as a positioning sensor to detect an angle deviation in the nut and execute the angle adjustment step.

[0074] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand and implement the present invention. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A machining device for the slot hole of the nut in the through rod of an air brake, characterized in that: Includes a feeding assembly (2), a pushing assembly, a punching assembly (5), and a mold (6); The punch assembly (5) includes a punch drive assembly and a connecting punch (53); The mold (6) includes a lower mold (61) and an upper mold (62). The lower mold (61) includes a fixed plate (613), an ejector plate (614), a positioning plate (615), a slot punch (617), and a discharge spring (618). The fixed plate (613), the ejector plate (614), and the positioning plate (615) are arranged sequentially from bottom to top. The slot punch (617) and the discharge spring (618) are both mounted on the fixed plate (613). After stamping, the discharge spring (618) is used to eject the material. The plate (614) provides an upward thrust, the top plate (614) is provided with a through hole for the slot punch (617) to pass through, the positioning plate (615) is provided with a positioning area (6151) for positioning the nut and matching the shape of the nut; the upper die (62) includes an upper punch (621) and a connecting part (622) connected to each other, the connecting part (622) is used to connect with the connecting punch (53), and the upper punch (621) is used to apply pressure to the nut in the positioning area (6151); The feeding assembly (2) is used to feed the nut to the opening position of the positioning area (6151); The pushing assembly includes a linear drive assembly, a push rod (31), and an air inlet (33). The linear drive assembly is used to drive the push rod (31) to push the nut into the positioning area (6151). The air inlet (33) is set on the push rod (31) and is used to unload the nut after stamping.

2. The machining equipment for the slotted hole of the through rod nut of an air brake according to claim 1, characterized in that: The air inlet (33) is provided in several groups, including at least one air inlet whose air blowing direction coincides with the center line of the positioning area (6151) and at least one air inlet whose air blowing direction has an inclined angle with the center line of the positioning area (6151), which are respectively used to realize the air blowing of the nut and the direction adjustment of the nut before entering the positioning area (6151).

3. The processing equipment for the slot hole of the through rod nut of the air brake according to claim 2, characterized in that: The push rod (31) has a shape that matches the nut at the end that contacts the nut. The air inlet (33) is provided in three sets at the end of the push rod (31) that contacts the nut. The middle air inlet (33) coincides with the center line of the air blowing direction positioning area (6151). The air blowing directions of the air inlets (33) on both sides have an inclined angle between them and the center line of the positioning area (6151).

4. The machining equipment for the slotted hole of the through rod nut of an air brake according to any one of claims 1-3, characterized in that: The feeding assembly (2) includes a vibrating feeder (21) and a feeding track (22).

5. The machining equipment for the slotted hole of the through rod nut of an air brake according to claim 4, characterized in that: The processing equipment for the through rod nut slot of the air brake also includes a photoelectric sensor (9), which is used to detect whether there is material on the top plate (614).

6. The machining equipment for the slotted hole of the through rod nut of an air brake according to claim 1 or 5, characterized in that: The upper die (62) also includes a spring pin (623) and a spring (624), both of which are disposed in the upper punch (621). The spring pin (623) is used to engage with the center hole of the nut during stamping.

7. The machining equipment for the slotted hole of the through rod nut of an air brake according to claim 1 or 5, characterized in that: The machining equipment for the through rod nut slot of the air brake also includes a safety light curtain (7).

8. The machining equipment for the slotted hole of the through rod nut of an air brake according to claim 7, characterized in that: The feeding assembly (2), the pushing assembly, the punching assembly (5) and the mold (6) are all mounted on the housing (1), and the bottom of the housing (1) is provided with casters.

9. A method for machining a slotted hole for a nut in an air brake through rod, based on the machining equipment for machining slotted holes for an air brake through rod according to any one of claims 1-8, characterized in that: Includes the following steps: Feeding steps: The feeding assembly (2) feeds the nut (8) into the opening position of the positioning area (6151); Pushing steps: The linear drive assembly drives the push rod (31) to push the nut (8) into the positioning area (6151), and the push rod (31) maintains its position after being pushed in; Stamping steps: The punch drive assembly drives the connecting punch (53) to descend, the upper punch (621) punches down, so that the nut (8) contacts the slot punch (617) to complete the slot punching. At this time, the feeding spring (618) is compressed. Material feeding steps: The push rod (31) and the upper punch (621) retract simultaneously, the feeding spring (618) causes the top plate (614) to rise, popping out the nut (8). At this time, the air blowing port (33) blows air to send the nut (8) to be processed to the collection area.

10. The machining method for the slotted hole of the through rod nut for an air brake according to claim 9, characterized in that: It also includes the following steps: In the pushing step, if the push rod (31) fails to push the nut (8) into the positioning area (6151), the push rod (31) retracts. At this time, if there is an angular deviation between the nut (8) and the positioning area (6151), the angle adjustment step is executed: the air blowing direction on the push rod (31) is activated at an angle between the air blowing port (33) and the center line of the positioning area (6151), and the nut (8) is rotated to adjust the angle; then the pushing is performed again. If it is successfully pushed in, the stamping step is executed; otherwise, the angle adjustment step is repeated.

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