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CN-122007651-A - Processing device for seat chassis pipe fitting and control method thereof

CN122007651ACN 122007651 ACN122007651 ACN 122007651ACN-122007651-A

Abstract

The application provides a processing device for seat chassis pipe fittings, which comprises a base, a conveying mechanism, a cutting mechanism, a bending mechanism and a transfer mechanism, wherein the conveying mechanism is used for continuously conveying long pipe fittings along a first direction, the cutting mechanism is arranged at the downstream of the conveying mechanism and used for cutting the long pipe fittings conveyed to stations of the cutting mechanism to obtain single-section pipe fittings, the bending mechanism is arranged at the downstream of the cutting mechanism and used for bending and forming the end parts of the single-section pipe fittings, and the transfer mechanism is used for transferring the cut single-section pipe fittings from the cutting mechanism to the bending mechanism. The device realizes the full-flow continuous automatic production of the seat chassis pipe fitting, greatly improves the production efficiency, and ensures extremely high processing precision and product consistency. The precise positioning system penetrating through the cutting and bending procedures is established, the structure is compact, and the degree of automation and intelligence is high. The functional modules are highly integrated on the same base, so that the layout is reasonable, and the occupied area of equipment is saved.

Inventors

  • YAN YUNLONG
  • JIA YUNA
  • WANG XIAOXU

Assignees

  • 金隆云智能装备(河北)有限公司

Dates

Publication Date
20260512
Application Date
20260205

Claims (10)

  1. 1. A machining device for seat pan tubing, comprising: a base (5); A conveying mechanism (1) for continuously conveying the long pipe fitting along a first direction; the cutting mechanism (2) is arranged at the downstream of the conveying mechanism (1) and is used for cutting the long pipe conveyed to the station of the cutting mechanism to a fixed length to obtain a single-section pipe fitting; the bending mechanism (4) is arranged at the downstream of the cutting mechanism (2) and is used for bending and forming the end part of the single-section pipe fitting; And a transfer mechanism (3) for transferring the cut single Duan Guanjian from the cutting mechanism (2) to the press bending mechanism (4).
  2. 2. The processing device for seat pan tubulars according to claim 1, characterized in that the press bending mechanism (4) comprises: a forming mechanism comprising a fixed lower die (41) and an upper die (42) adjustable in a first direction, a forming space for placing a pipe to be bent end being formed between the upper die (42) and the lower die (41); A lateral gripping and transfer mechanism (3) comprising: a pair of clamping assemblies and a driving device for driving the clamping assemblies to move; the clamping assemblies are distributed on two opposite sides of the forming space along a second direction, and the second direction is perpendicular to the first direction; when the driving device drives the clamping assemblies to move to the first station, the pair of clamping assemblies limit the pipe fitting arranged on the lower die (41) from two sides of the second direction; The driving device is also used for driving the clamping assembly to drive the formed pipe to move to the second station after the pipe is bent and formed, so that the formed pipe can be moved out of the forming space.
  3. 3. The processing device for seat pan tubulars of claim 2, further comprising a pair of fixed stop bars (43) extending in a third direction and located on either side of the forming space in a second direction, each of the clamping assemblies comprising a movable base and a clamping actuator movably connected to the base, the clamping actuators interacting with the corresponding stop bars (43) such that the stop bars (43) can force or allow the clamping actuators to assume different working positions when the base is driven to different stations.
  4. 4. The processing device for the seat chassis pipe fitting according to claim 3, wherein the clamping executing member is movably connected to the base body, an elastic element is arranged between the clamping executing member and the base body and is used for providing a restoring force for the clamping executing member, and the clamping executing member interacts with different parts on the limiting bar (43) through a positioning part arranged on the clamping executing member, so that the clamping executing member sequentially presents at least three different working states in the process of moving along with the base body.
  5. 5. The machining device for seat pan tubulars of claim 1, wherein the cutting device comprises: A laser cutting head for performing a cutting operation; The blowing component is connected with the laser cutting head and used for blowing off the cutting slag; The clamping and fixing device comprises air cylinder assemblies positioned at two radial ends of the pipe fitting, and is used for clamping the pipe fitting from two sides during cutting to prevent the pipe fitting from moving along the axial direction of the pipe fitting; the clamping and fixing device comprises: a frame fixed on the base (5), wherein the frame is internally provided with a hollow structure; The lifting driving module (6) is movably arranged in the frame; The guide part is arranged on the lifting driving module (6) and positioned in the pipe fitting conveying path and used for radially guiding the passing pipe fitting; wherein, an avoidance space is formed in the hollow structure between the guide areas defined by the guide parts, the pipe fitting is exposed in the avoidance space, and a piston rod of the cylinder assembly acts on the exposed pipe fitting in the avoidance space; The lifting driving module (6) comprises a lifting cylinder and an integrated mounting seat (61) driven by the lifting cylinder, the integrated mounting seat (61) is arranged in the hollow structure of the frame in a penetrating mode, and the guide part is arranged on the integrated mounting seat (61).
  6. 6. The processing device for seat pan tubulars according to claim 5, characterized in that the transfer mechanism (3) is provided at the bottom of the cutting mechanism (2), comprising: The sliding table cylinder is arranged at the bottom of the frame, and the extending direction of the guide rod (31) is the same as the conveying direction of the pipe fitting; The sliding head (32) is in sliding connection with the guide rod (31) of the sliding table cylinder; an extension part (33) which is arranged at the top of the sliding head (32) and extends into the avoidance space; The extension part (33) is used for driving the sliding head (32) to move along the guide rod (31) by the sliding table cylinder after cutting is completed so as to push the end part of the cut single-section pipe fitting to move to the forming station of the bending mechanism (4) along the pipe fitting conveying direction.
  7. 7. The processing device for seat pan tubes according to claim 5, characterized in that the guide part is an integral sleeve, both ends of which form guide holes for tubes to pass through, the middle part is provided with an opening for receiving the piston rod of the cylinder assembly to pass through, and the bottom of the sleeve is provided with a slit penetrating in the tube conveying direction for passing through the protruding part (33) of the transfer mechanism (3). A sleeve part (62) is arranged between the two guide holes of the guide part, the sleeve part (62) is coaxially sleeved outside the pipe fitting in the avoidance space, a gap is formed between the sleeve part and the outer wall of the pipe fitting, two sub-frames (63) are arranged on two sides of the outer wall of the sleeve part (62), the cylinder bodies of the first cylinder and the second cylinder are fixed on the corresponding sub-frames (63), and the piston rods of the first cylinder and the second cylinder face the gap of the sleeve part (62).
  8. 8. A control method for a processing device for seat pan tubulars, realized on the basis of a processing device for seat pan tubulars according to any one of claims 1-7, characterized by comprising the steps of: controlling the transfer mechanism (3) to transfer the cut single-section pipe fitting to a forming station of the bending mechanism (4); Acquiring state information of the lateral clamping and transferring mechanism (3) of the bending mechanism (4) in real time during the transferring action of the transferring mechanism (3), wherein the state information is used for representing whether a pair of clamping assemblies has completed the removal and release of the previous formed pipe fitting; -controlling the transfer mechanism (3) to continue performing transfer actions until the single-length tube is placed at the forming station of the press bending mechanism (4) only when it is confirmed, based on the status information, that a pair of the gripping assemblies has been reset to a state ready to receive a new tube; if the reset of the pair of clamping assemblies is not confirmed within a preset time window, the transfer mechanism (3) is controlled to be suspended or retracted, and the processing device is controlled to send out an alarm signal.
  9. 9. The control method of a processing apparatus for a seat pan pipe fitting according to claim 8, wherein, during the press bending process performed by the press bending mechanism (4), forming pressure data is acquired in real time by a force sensor provided on the lower die (41) or the upper die (42); acquiring the identification mark of the current single-section pipe fitting transferred to the forming station by the transfer mechanism (3); Inquiring historical molding data corresponding to the pipe fitting based on the identification mark, wherein the historical molding data comprises standard molding pressure curves collected in the process of historical bending of the batch or the specification pipe fitting; comparing the molding pressure data acquired in real time with the standard molding pressure curve to generate a comparison result; if the comparison result indicates that the pressure curve and the standard curve in the current bending process have pressure deviation in a preset key deformation stage, judging that the material property or the wall thickness of the current single-section pipe fitting has batch abnormality; And according to the amplitude and the characteristics of the pressure deviation, the pressing speed or the pressure maintaining time of the upper die (42) is regulated in real time in the residual stroke of the bending process so as to compensate the molding error caused by abnormal materials.
  10. 10. The control method of a processing apparatus for a seat pan pipe according to claim 8, characterized in that the method further comprises the steps of: After each bending procedure is completed, forming corresponding process quality data pairs according to the acquired molding pressure data and the off-line measurement result of the final product, and updating the process quality data pairs to a process knowledge base, wherein the process knowledge base stores optimized bending process parameter sets corresponding to the pipe fittings with different material specifications; When processing new varieties or batches of pipe fittings, firstly, transferring one pipe fitting to a bending mechanism (4) by using the transfer mechanism (3) as a test piece to execute a complete bending process, and collecting molding pressure data in a test process; Inputting the molding pressure data of the trial production process into a prediction model trained based on the process knowledge base, and outputting a prediction result of the final molding quality of the trial production part and a recommended bending process parameter adjustment scheme by the prediction model; Judging whether the quality requirement is met according to the prediction result, and determining whether to adopt a recommended bending process parameter adjustment scheme to set parameters of the bending process of the follow-up pipe fitting in the same batch according to the judgment result.

Description

Processing device for seat chassis pipe fitting and control method thereof Technical Field The invention belongs to the technical field of pipe bending processing, and particularly relates to a processing device for a seat chassis pipe and a control method thereof. Background In the production of a seat chassis (such as five-star legs of an office chair), a metal pipe needs to be cut to a fixed length, and one end of the metal pipe needs to be bent and formed at a specific angle. The traditional processing mode is generally completed by adopting discrete independent equipment in a sectioning way, namely, a long pipe is cut off by a cutting machine (such as a band saw machine or a laser cutting machine), and then the cut single pipe is transferred to another pipe bending machine or a bending press by manual or simple conveying equipment for bending operation. The traditional mode has obvious technical defects that firstly, the production beat is slow and the efficiency is low. The material circulation between the working procedures depends on manual operation or asynchronous mechanical transfer, a great amount of waiting and carrying time exists, continuous automatic production cannot be realized, and the whole productivity is limited. Secondly, machining precision is difficult to guarantee, and product consistency is poor. And more importantly, in the bending procedure, the axial and circumferential positions of the pipe fitting in the die are difficult to accurately reproduce due to the lack of accurate references established and maintained in the cutting stage, so that the dispersion of bending angles and positions is directly increased, and the quality of subsequent welding and assembling is affected. Furthermore, the degree of automation and intellectualization is low. The whole process relies on manual engagement and monitoring, the labor requirement is large, and potential safety hazards exist. In addition, the equipment layout is distributed, the occupied area is large, and the production flow is difficult to carry out centralized control and data tracing. Disclosure of Invention In view of the foregoing drawbacks and disadvantages of the prior art, a processing apparatus for a seat pan tube and a control method thereof are provided. In a first aspect, the present application proposes a machining device for seat pan tubes, comprising: A base; The conveying mechanism is used for continuously conveying the long pipe fitting along the first direction; the cutting mechanism is arranged at the downstream of the conveying mechanism and is used for cutting the long pipe conveyed to the station of the cutting mechanism to a fixed length to obtain a single-section pipe; the bending mechanism is arranged at the downstream of the cutting mechanism and is used for bending and forming the end part of the single-section pipe fitting; And the transfer mechanism is used for transferring the cut single Duan Guanjian from the cutting mechanism to the bending mechanism. According to the technical scheme provided by the application, the bending mechanism comprises: The forming mechanism comprises a fixed lower die and an upper die which is adjustable in a first direction, and a forming space for placing the end of the pipe to be bent is formed between the upper die and the lower die; a lateral clamping and transfer mechanism, comprising: a pair of clamping assemblies and a driving device for driving the clamping assemblies to move; the clamping assemblies are distributed on two opposite sides of the forming space along a second direction, and the second direction is perpendicular to the first direction; When the driving device drives the clamping assemblies to move to the first station, the pair of clamping assemblies limit the pipe fitting arranged on the lower die from two sides of the second direction; The driving device is also used for driving the clamping assembly to drive the formed pipe to move to the second station after the pipe is bent and formed, so that the formed pipe can be moved out of the forming space. According to the technical scheme, the bending device further comprises a pair of fixed limiting bars which extend along a third direction and are respectively located on two sides of the forming space along a second direction, each clamping assembly comprises a movable base body and a clamping executing piece movably connected to the base body, the clamping executing pieces interact with the corresponding limiting bars, and therefore when the base body is driven to different stations, the limiting bars can force or allow the clamping executing pieces to take on different working postures. According to the technical scheme, the clamping executing piece is movably connected to the base body, an elastic element is arranged between the clamping executing piece and the base body and used for providing reset force for the clamping executing piece, and the clamping executing piece interacts with different part