Full-automatic multi-station barrel integrated forming process

Abstract

The invention discloses a full-automatic multi-station cylinder integrated forming process, and aims to provide a full-automatic multi-station workpiece integrated forming process which can improve the production efficiency, enhance the operation positioning performance and accuracy and further improve the production quality. The method comprises the following steps that S1, before feeding, workpieces are prepared on a feeding station in a multi-piece storage mode, and separated single workpieces are conveyed; s2, the specific position of the surface of the workpiece is evenly smeared in a positioning smearing mode; s3, the workpiece is conveyed to a stretching waiting station for discharging; s4, the workpiece is transferred to a stretching station, the workpiece is placed, and position confirmation is conducted in a positioning and adjusting mode; s5, the workpiece is transferred to a punching station, and the sealed end of the workpiece is punched; and S6, the workpieces are transferred to an edge cutting station and an edge shrinking station, and the transferred workpieces are discharged and placed on a material collecting station in a centralized mode. The method has the beneficial effects that the production efficiency is improved, the operation positioning performance and accuracy are enhanced, and then the production quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fire extinguisher production, and particularly refers to a fully automatic multi-station integrated forming process for the cylinder body. Background Art

[0002] The traditional processing technology for the fire extinguisher cylinder body generally uses a process method of first blanking, then stretching, and then trimming and drilling. In this process, multiple sets of different molds are required, namely blanking molds and stretching molds, and stretching needs to be completed in several times, and different molds need to be switched each time, which not only increases the labor intensity of workers, but also has low production efficiency, cannot meet the needs of mass production, and at the same time increases the production cost.

[0003] China Patent Authorization Publication No.: CN 116000637 A, Authorization Publication Date: April 25, 2023. The present invention proposes an automatic production line for stretching the fire extinguisher cylinder body, including a frame, with the two ends of the frame being the loading end and the unloading end respectively. It is characterized in that: along the direction from the loading end to the unloading end of the frame, a preforming station, a flipping station, a reverse stretching station, a punching station, and a trimming and edge shrinking station are sequentially arranged. On one side of the frame corresponding to the loading end, there is an automatic loading device. The center distances between the preforming station, the flipping station, the reverse stretching station, the punching station, and the trimming and edge shrinking station are all the same. There is a transfer beam on one side of the frame, and the transfer beam is loaded with components related to the automatic loading device, the preforming station, the flipping station, and the reverse stretching station. The disadvantages of this technical solution are as follows: 1. The loading operation is cumbersome, reducing the efficiency of continuous loading; 2. In the coating operation, the coating position is single, resulting in material waste at the same time; 3. It is difficult to correct the position of the workpiece before stretching, resulting in poor process effects during stretching and affecting subsequent trimming.

[0004] In summary, the existing production lines for fire extinguisher cylinder bodies have the deficiencies of low efficiency, poor accuracy and positioning, resulting in poor product quality. Summary of the Invention

[0005] The present invention aims to overcome the deficiencies in the existing production lines for fire extinguisher cylinder bodies, such as low efficiency, poor accuracy and positioning, resulting in poor product quality, and provides a fully automatic multi-station integrated forming process for workpieces that improves production efficiency, enhances the positioning and accuracy of operations, and thus improves product quality.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A fully automatic multi-station integrated forming process for workpieces, comprising the following steps: S1: Prepare several workpieces in the shape of circular sheets. Before feeding, the workpieces are stocked at the feeding station in a multi-sheet storage mode. Through a separation operation, the mutual adsorption force generated after workpiece storage is overcome, so that the workpiece stored at the top is separated from the workpiece below, and then piece-by-piece feeding is realized. The separated single workpiece is conveyed; S2: Stay at the coating station to apply stretching oil to the workpiece. During the coating, the surface of the workpiece is evenly coated at the specified position by means of positioning coating; S3: Convey the workpiece to the stretching waiting station for blanking. During the blanking, the surface contact with the workpiece is reduced to prevent wiping the stretching oil; S4: Transfer the workpiece to the stretching station. After placement, the position of the workpiece is confirmed by means of positioning adjustment to ensure that the center of the circle of the workpiece coincides with the center point of the stretching operation. There are multiple stretching stations. After stretching, the workpiece is positioned and discharged. A flipping station is set between the stretching stations to perform a flipping operation on the workpiece. During stretching, the workpiece with a circular sheet structure becomes a cylindrical structure. After multiple stretchings, the diameter of the workpiece gradually decreases; S5: The workpiece after stretching has one end open and the other end closed. Transfer the workpiece to the punching station to perform a punching operation on the sealed end of the workpiece; S6: Transfer the workpiece to the trimming and edge shrinking station to perform a cutting operation on the open end of the workpiece to make the open end face of the workpiece neat and shrink the edge. Transfer the workpiece for blanking and centrally place it at the aggregate station.

[0007] In the integrated forming process of the fire extinguisher cylinder body, a feeding station, a coating station, a stretching waiting station, a stretching station, a punching station, a trimming and necking station, and a collecting station are sequentially set. Among them, multiple stretching stations are set, and a turning station is added between the stretching stations to pre-stretch the workpiece and then turn it over and stretch it again to ensure uniform stretching, forming a fully automatic multi-station integrated forming process for the workpiece. In S1, prepare the workpiece raw material, the metal round sheet. To achieve continuous feeding, store multiple workpieces for feeding. Since the workpiece thickness of the metal is relatively thin, the internal and external pressure differences cause mutual adsorption force during storage. Therefore, it is necessary to separate the top workpiece from the next layer of workpieces during feeding through a separation operation to achieve single-piece conveying of piece-by-piece feeding. The separation operation adopts an automated method to achieve feeding through rapid separation. In S2, stay at the coating station during conveying to wait for the stretching oil to be applied to the surface of the workpiece. The application of stretching oil reduces friction and heat during stretching, while cleaning the metal surface, protecting the mold, and improving the quality of the workpiece. Among them, the surface of the workpiece is evenly coated in a specified area through positioning coating, including selecting single-sided coating or double-sided coating according to the size specifications and specific materials of the workpiece, and the size of the coating area from the outside to the inside, to precisely control the quality of the process product and the process production cost during processing and reduce resource waste. In S3, after coating, the workpiece is unloaded to the stretching waiting station to position the workpiece before stretching. Through precise position positioning, the automated forming process can control the position and speed of each production link, reduce the pause and adjustment time, and thus improve the overall operation efficiency. During unloading, reduce the contact with the surface of the workpiece to prevent wiping the stretching oil on the surface of the uniformly coated workpiece, resulting in a discounted coating effect and affecting the quality. In S4, after placing the workpiece at the stretching station, prepare for the stretching operation. Since the stretching accuracy affects the uniformity of material forming and subsequent trimming, a secondary positioning operation is confirmed before stretching the workpiece to make the workpiece more uniform during stretching. Between stretchings, a turning station is set to turn the workpiece at the previous stretching station in the reverse direction and then put it into stretching, making the forming more uniform and increasing the radial tensile stress, thus effectively preventing wrinkling and possibly further increasing the drawing coefficient of the redrawing. During stretching and turning and stretching again, the round sheet workpiece gradually forms a cylindrical structure with a reduced diameter and finally takes the shape of the required diameter. After each stretching, the workpiece is moved out for discharge to facilitate the rapid transfer of the workpiece.In S5, the workpiece after stretching has an open end and a closed end. By transferring the workpiece to the punching station, punching is performed on the closed end of the workpiece to reserve a position for later assembly of accessories such as valves through the opening. In S6, the punched workpiece is transferred to the trimming and edge shrinking station. Through trimming operation, the end face of the open end of the workpiece is made neat. The edge of the workpiece after trimming is processed by edge shrinking, so that the port part of the open end of the workpiece shrinks slightly inward for later assembly, completing the treatment of the open end of the workpiece. Then, through S1 - S6, all the processing operations for the forming of the workpiece are completed, and the workpiece is transferred to the aggregate station again for batch collection. The effects of realizing the full - automatic multi - station integrated forming of the workpiece for the fire extinguisher cylinder, realizing the rapid continuous feeding and batch aggregation of the production line, enhancing the operation flexibility and precision, improving the process quality and efficiency, and reducing the production cost are achieved.

[0008] Preferably, in S1, the storage method adopted is to stack multiple circular - sheet - shaped workpieces in a pile with one end higher than the other. The prepared workpieces are placed in an inclined state. The storage container for the prepared workpieces in S1 is a loading box, which is placed at the loading station. The workpieces remain in an inclined state in the loading box. The method of taking out the workpieces from the loading box in S1 is to take them out laterally from the stacked workpieces. The storage container for placing the workpieces in the loading station is a loading box. Through the loading box, the inclined stacking of the workpieces during stacking is realized, making it more convenient to take out the workpieces laterally. When taking out the single workpiece on the top layer and separating it from the next workpiece, compared with the traditional method of directly taking out from the upper end of the horizontally stacked workpieces, taking out the workpieces laterally will gradually reduce the contact area and thus make it easier to overcome the adsorption force. At the same time, with the inclined storage method of the loading box and the gradually deviating center - of - gravity directions of the workpieces, the two workpieces can be quickly separated under their own weights. The effects of simplifying the workpiece separation process and improving the workpiece loading efficiency are achieved.

[0009] Preferably, a lifting bottom plate is installed at the bottom of the feeding box. The upper surface of the lifting bottom plate is an inclined surface. The workpieces are placed on the upper surface of the lifting bottom plate and stacked obliquely. One more step is added to S1, specifically: raising the height of the workpieces so that the uppermost workpiece can always be in a proper position. The feeding box is equipped with a lifting motor, and the lifting bottom plate is connected to the lifting motor, so that the workpieces can be continuously fed by rising on the lifting bottom plate, and the workpieces can be replenished in batches by lowering the lifting bottom plate. The bottom of the feeding box realizes that the workpieces remain in an inclined state every time the workpieces are stored by installing a lifting bottom plate with an inclined surface. And in S1, a step of displacing the stored workpieces is added to keep the uppermost workpiece always in the best position to be removed. The lifting bottom plate is lifted and adjusted by the lifting motor, eliminating the need for manual adjustment and feeding, realizing continuous separation and feeding of the workpieces in the best position, and replenishing after the end of a single batch of feeding, thus facilitating the calculation of the feeding quantity. This achieves the effects of enhancing the feeding stability and facilitating production statistics.

[0010] Preferably, in S1, the separation operation is carried out at the box opening and one side of the feeding box. In the separation operation, a separation structure and a conveying structure are adopted. The separation structure is installed at the box opening of the feeding box to separate the uppermost workpiece from the lower workpieces. The conveying structure is on one side of the feeding box, so that the separated workpieces are conveyed towards the coating station. Specifically, the horizontal movement of the workpieces is conveyed by using the magnetic adsorption method based on the metal properties of the workpieces. In S1, the separation operation is carried out at the box opening and one side of the feeding box, making the operation point close to the uppermost workpiece. In the separation operation, a separation structure and a conveying structure are adopted. The separation structure is installed above the workpiece and at the upper box opening of the feeding box to separate the upper and lower workpieces, so that the single upper workpiece is sent out and transferred to the conveying structure. The conveying structure conveys the separated workpieces, making the workpieces move to the coating station. The actions of separation and conveying are specifically to fix the separated workpieces by magnetic adsorption using the metal properties of the workpieces. The lower workpieces will not be affected by magnetic adsorption due to the resistance of the separation structure, and then the separated workpieces are quickly fixed for horizontal conveying and transfer. Compared with the traditional method that also uses magnetic adsorption to transfer but requires electric demagnetization to separate the workpieces, this process method can achieve quick separation without demagnetization. This achieves the effects of stable feeding operation, simplified process, and improved efficiency.

[0011] Preferably, the separating structure includes a discharge roller, a non-slip sleeve is sleeved on the discharge roller, a first rotating motor is installed on the loading box, the discharge roller is connected to the first rotating motor, the workpiece contacts the non-slip sleeve, the conveying structure includes a linear conveyor, a first telescopic mechanism, a support table, a support frame and a magnetic block, the support frame is placed on the side of the loading box, the linear conveyor and the support table are both connected to the support frame, the magnetic block is connected to the first telescopic mechanism, the first telescopic mechanism is connected to the linear conveyor, the support table and the magnetic block are arranged vertically opposite to each other, the distance between the support table and the non-slip sleeve is less than the diameter of the workpiece, so that the workpiece is pushed by the non-slip sleeve and transitions to the support table, and the first telescopic mechanism ensures that after the workpiece stays in the appropriate position on the support table, it drives the magnetic block to adsorb at the center of the workpiece, and the linear conveyor drives the workpiece to move horizontally downward. The separating structure adopted includes a discharge roller and a non-slip sleeve sleeved on the discharge roller. The discharge roller is connected to the first rotating motor at the opening of the loading box and rotates under the drive of the first rotating motor, thereby driving the non-slip sleeve to rotate. The non-slip sleeve is made of a material with a large surface friction coefficient. When the surface of the workpiece contacts the non-slip sleeve, the workpiece is pushed (rubbed) and approaches the support table of the conveying structure under the rotation of the non-slip sleeve. The conveying table and the linear conveyor are installed on the support frame, and the magnetic block on the first telescopic mechanism and the conveying table are arranged vertically, so as to separate the magnetic block from the workpiece before adsorption through the first telescopic mechanism, so that the magnetic block can descend and adhere to the center of the workpiece after the workpiece arrives on the conveying table, so that the workpiece can be stably and evenly fixed, and at the same time, it is convenient for the later application of stretching oil to be more uniform and easy to control. The linear conveyor conveys the workpiece horizontally along the support frame. The effect of improving the smoothness and stability of the process production line conveying is achieved.

[0012] Preferably, in S2, the coating station is arranged on the support frame and is mirror - set on both sides of the workpiece. An additional step is added in S2, specifically: the workpiece is rotated in a horizontal rotation manner at the coating station so that the surface of the workpiece can be circularly coated independently. A second rotary motor is added between the first telescopic mechanism and the magnetic block. One end of the second rotary motor is connected to the first telescopic mechanism, and the other end of the second rotary motor is connected to the magnetic block. The second rotary motor is used to drive the magnetic block to rotate the workpiece. The positioning coating method in S2 uses an oil - brush assembly for oiling operations. The oil - brush assembly is installed at the coating station and performs targeted positioning coating for wafers with different specification diameters and different coating areas. The coating stations on both sides of the support frame are mirror - arranged in S2 to increase the operation points and improve efficiency. The workpiece is automatically and evenly coated through rotation at the coating station. The specific operation is to add a second rotary motor between the magnetic block and the first telescopic mechanism, so that the magnetic block receives a rotational force and drives the workpiece to rotate through the drive of the second rotary motor, thereby enabling the workpiece to be evenly and efficiently coated with stretching oil on the oil - brush assembly at the coating station. The oil - brush assembly is adjustable to flexibly perform targeted coating for workpieces with different diameters and different required coating areas at the coating station. This achieves the effect of improving the operation efficiency and stability of the coating process.

[0013] Preferably, the oil - brush assembly includes a support member, an upper oil - brush, and a lower oil - brush. The support member is movably connected to the support frame, and the upper oil - brush and the lower oil - brush are detachably connected to the support frame. The bristles of the upper oil - brush and the lower oil - brush are made of soft materials and are in contact with each other. The horizontal height of the workpiece during transportation is placed between the upper oil - brush and the lower oil - brush, so that the upper surface of the workpiece contacts the upper oil - brush and the lower surface of the workpiece adheres to the lower oil - brush. The contact width of the workpiece is positioned by moving the position of the support member, and single - side and double - side coating are positioned by detaching the upper oil - brush and the lower oil - brush, so that the workpiece can be coated at the specified position according to the coating requirements. The oil - brush assembly includes a support member that is movably connected to the support frame, and the upper oil - brush and the lower oil - brush are detachably connected to the support member. Thus, the contact depth of the oil - brush with the workpiece can be adjusted during movement, and the upper oil - brush or the lower oil - brush can be rotated for coating or both can be used for coating during detachment, so that the process options during coating are strong. During coating, the bristles of the upper oil - brush or the lower oil - brush with stretching oil make soft contact with the surface of the workpiece. This achieves the effect of ensuring the stability of the coating process and the flexible positioning of the process.

[0014] Preferably, in S2, the coated workpiece continues to be horizontally conveyed to separate the magnetic block from the workpiece at the stretching waiting station, so as to prepare the workpiece before entering the stretching station. A material positioning component is used for separation at the stretching waiting station. The material positioning component includes a placement turntable and a blanking rod. The placement turntable is connected to the support frame. There are two blanking rods which are mirror-connected to the side surface of the placement turntable. When the workpiece passes through the placement turntable, the first telescopic mechanism resets upward, and the workpiece is blocked by the blanking rod and falls on the placement turntable, and the magnetic block and the workpiece are quickly separated through the blanking rod. The coated workpiece enters the stretching waiting station through continuous horizontal conveyance on the support frame and waits for further transfer and stretching. When the magnetic block and the workpiece are separated, the workpiece falls at the stretching waiting station. The separation operation uses a material positioning component for separation. Specifically, the turntable in the material positioning component is the turntable for placing the workpiece. The blanking rod is connected above the turntable and is pulled out a certain distance from the turntable. The spacing between the blanking rod and the turntable coincides with the horizontal path through which the workpiece passes, so that the workpiece can be transported and inserted between the turntable and the blanking rod. Two blanking rods are arranged and symmetrically installed to block the upward movement of the magnetic block and prevent the workpiece from moving upward accordingly, so that the workpiece still falls on the turntable to achieve separation. The small contact surface between the blanking rod and the workpiece can leave the workpiece, and the turntable is placed at the center of the workpiece where there is no stretching oil. Thus, before stretching after coating, the stretching oil can be kept in the original coated state as much as possible. Compared with the transport roller of the traditional conveying mechanism, it reduces the negative contact of smearing and wiping the stretching oil, and at the same time, there is no need for a complex structure for electric demagnetization to separate the workpiece. It achieves the effects of simplifying the process flow and structure, ensuring the stretching quality of the workpiece, and improving the workpiece conveying efficiency.

[0015] Preferably, in S3 to S5, a transfer station is provided on one side of the stretching station, flipping station, punching station, trimming and necking station, and material collecting station for transferring the workpiece. The transfer operation is carried out by a manipulator structure. The manipulator structure is installed at the transfer station. The manipulator fixes the workpiece by clamping it from both sides, enabling the workpiece to be transferred from the placement turntable to the material collecting station. After the workpiece is transferred and placed at the stretching station, a positioning component is used for positioning and post-stretching positioning and discharging of the workpiece center correction. The offset workpiece is pushed by the positioning component, and the workpiece with gradually increasing length is shifted to facilitate the transfer by the manipulator structure. In S3 to S5, the transfer operation after the workpiece is placed at the stretching waiting station is carried out by a manipulator structure to maintain and improve the automation level and operation efficiency. Among them, the stretching station, flipping station, punching station, and trimming and necking station are all fixed, transferred, and placed by the manipulator structure on the side. The manipulator structure fixes the workpiece by clamping it from both sides (circumferential side surface) to prevent contact with the surface of the stretching oil. The center determination operation of the workpiece is carried out at the stretching station to make the center of the workpiece the center of the stretching operation. In addition, due to the continuous increase in the height of the cylinder body after each stretching, resulting in a position change, the operation stroke of the manipulator structure is increased. Therefore, the stretched workpiece is adjusted by the positioning component to shorten the operation stroke of the manipulator structure. The effects of achieving the process automation level and improving the process flow efficiency are achieved.

[0016] Preferably, the positioning component includes a second telescopic mechanism, an elastic mechanism, a push rod, and a push ring. The stretching station and the punching station are both connected to a workbench. The workbench is provided with a punching groove, and a lower die is connected in the punching groove. The second telescopic mechanism is connected to the workbench. There are four second telescopic mechanisms and they are evenly arranged on the four sides of the punching groove. The push rod is connected to the second telescopic mechanism. One end of the elastic mechanism is connected to the bottom of the punching groove, and the other end of the elastic mechanism is connected to the push ring. The push ring and the elastic mechanism are both sleeved on the lower die. The stretching station and the punching station both include workbenches for stretching and punching operations. A punching groove is opened on the workbench, and a lower die is placed in the punching groove to shape the workpiece. Among them, the workpiece waits for stretching or punching at the center of the lower die surface. The second telescopic mechanism and the push rod are arranged on both sides of the punching groove on the workbench. The four push rods are arranged around the punching groove so that the push rods can move relative to each other under the push of the second telescopic mechanism. Furthermore, the distance between the push rods after moving is the same as the diameter of the workpiece, so as to push and correct the offset workpiece. An elastic mechanism is sleeved on the lower die. The elastic mechanism pushes the push ring through elastic force, so that the push ring descends under pressure during stretching and punching, but loses pressure after stretching or punching and then raises the workpiece on the lower die, so as to automatically lift the workpiece and facilitate the rapid picking of the workpiece by the manipulator. The effects of improving the process automation level and process efficiency are achieved.

[0017] The beneficial effects of the present invention are as follows: realizing the full-automatic multi-station integrated molding of fire extinguishers through the molding process; achieving rapid continuous feeding and batch aggregate collection of the production line; enhancing the operation flexibility and precision; improving the process quality and efficiency, reducing the production cost; simplifying the process flow; increasing the degree of process automation and improving the process efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the process flow chart of the present invention; Figure 2 is the schematic diagram of workpiece processing; Figure 3 is the schematic diagram of the feeding station; Figure 4 is the schematic diagram of magnetic block installation; Figure 5 is the schematic diagram of the installation of the upper oil brush and the lower oil brush; Figure 6 is the schematic diagram of the installation of the push rod and the workbench (the state where the lower die and the spring are not installed in the stamping groove); Figure 7 is the schematic diagram of the aggregate collection station.

[0019] In the figure: 1. feeding box, 2. lifting bottom plate, 3. discharge roller, 4. anti-slip sleeve, 5. support table, 6. support frame, 7. magnetic block, 8. support member, 9. upper oil brush, 10. lower oil brush, 11. placing round table, 12. blanking rod, 13. push rod, 14. push ring, 15. workbench, 16. stamping groove, 17. lower die. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0021] It should be noted that the terms used here are only for describing the specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or their combinations.

[0022] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components set forth in these embodiments do not limit the scope of the present application. For ease of description, spatial relative terms such as "upper", "lower", "left", "right", etc. are used in the embodiments to describe the relationship of one element or feature shown in the drawings relative to another element or feature. It should be understood that, in addition to the orientations shown in the drawings, the spatial terms are intended to include different orientations during the use or operation of the device. For example, if the device in the drawing is inverted, the element described as being "below" other elements or features will be located "above" the other elements or features. Therefore, the exemplary term "lower" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein can be interpreted accordingly. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, processes, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, processes, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0023] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above terms have no special meanings, and thus cannot be construed as limiting the protection scope of the present application.

[0024] Embodiment 1: As Figure 1 、 2As shown in the figure, a fully automatic multi-station integrated workpiece forming process includes the following steps: S1: Prepare several workpiece with a circular sheet structure. Before feeding, the workpieces are stocked at the feeding station in a multi-sheet storage mode. Through a separation operation, the mutual adsorption force generated after workpiece storage is overcome, so that the workpiece stored at the top is separated from the workpiece below, and then piece-by-piece feeding is realized, and the separated single workpiece is conveyed; S2: The workpiece stays at the coating station to apply stretching oil to the workpiece. During the coating process, the surface of the workpiece is evenly coated at the specified position by positioning coating; S3: The workpiece is conveyed to the stretching waiting station for blanking. During blanking, the surface contact with the workpiece is reduced to prevent wiping of the stretching oil; S4: Transfer the workpiece to the stretching station. After the workpiece is placed, its position is confirmed by positioning and adjustment to ensure that the center of the workpiece coincides with the center point of the stretching operation. There are multiple stretching stations. After stretching, the workpiece is positioned and discharged. A flipping station is set between the stretching stations to perform flipping operations on the workpiece. During stretching, the circular sheet-structured workpiece becomes a cylindrical structure, and the diameter of the workpiece gradually decreases after multiple stretchings; S5: The stretched workpiece has one end open and the other end closed. Transfer the workpiece to the punching station to perform punching operations on the sealed end of the workpiece; S6: Transfer the workpiece to the trimming and edge shrinking station to perform cutting operations on the open end of the workpiece to make the open end face of the workpiece neat and shrink the edge, and transfer the workpiece for blanking and centrally place it at the aggregate station.

[0025] As Figure 1 , 3 shown, in S1, the storage method adopted is to stack multiple circular sheet-structured workpieces in a pile, and the stocked workpieces are placed in an inclined state with one end higher than the other end. The storage container for stocking in S1 adopts a loading box 1. The loading box 1 is placed at the loading station, and the workpieces are kept in an inclined state in the loading box 1. The method of taking out the workpieces from the loading box 1 in S1 is to take them out laterally from the stacked workpieces.

[0026] As Figure 1 , 3 shown, a lifting bottom plate 2 is installed at the bottom of the loading box 1. The upper surface of the lifting bottom plate 2 is an inclined surface, and the workpieces are placed on the upper surface of the lifting bottom plate 2 for inclined stacking. An additional step is added in S1, specifically: raise the height of the workpieces so that the top workpiece can always be in a proper position. The loading box 1 is equipped with a lifting motor, and the lifting bottom plate 2 is connected to the lifting motor, so that the workpieces are continuously fed by rising on the lifting bottom plate 2, and the lifting bottom plate 2 is lowered to replenish the workpieces in batches.

[0027] As Figure 1 , 3As shown in the figure, in S1, the separation operation is carried out at the opening and one side of the loading box 1. In the separation operation, a separation structure and a conveying structure are adopted. The separation structure is installed at the opening of the loading box 1 to separate the uppermost workpiece from the lower workpieces. The conveying structure is on one side of the loading box 1, so that the separated workpieces are conveyed towards the coating station. Specifically, the horizontal movement of the workpiece is carried out by using the magnetic adsorption method based on the metal property of the workpiece.

[0028] As Figure 3 、 4 shown in the figure, the separation structure includes a discharge roller 3. The discharge roller 3 is sleeved with an anti-slip sleeve 4. The loading box 1 is equipped with a first rotating motor. The discharge roller 3 is connected to the first rotating motor and is rotatably connected to the opening of the loading box 1. The workpiece is in contact with the anti-slip sleeve 4. The conveying structure includes a linear conveyor, a first cylinder structure, a support table 5, a support frame 6 and a magnetic block 7. The support frame 6 is placed on the side of the loading box 1. The linear conveyor and the support table 5 are both connected to the support frame 6. The magnetic block 7 is connected to the first cylinder structure. The first cylinder structure is connected to the linear conveyor. The support table 5 and the magnetic block 7 are arranged opposite to each other vertically. The distance between the support table 5 and the anti-slip sleeve 4 is less than the diameter of the workpiece, so that the workpiece is pushed by the anti-slip sleeve 4 to transition to the support table 5. The first cylinder structure ensures that after the workpiece stays in the appropriate position on the support table 5, it then drives the magnetic block 7 to adsorb at the center of the workpiece, and the workpiece moves horizontally under the drive of the linear conveyor.

[0029] As Figure 1 、 3 shown in Figures 4 and 5, in S2, the coating stations are arranged on the support frame 6 and are mirror-symmetrically arranged on both sides of the workpiece. One more step is added in S2, specifically: the workpiece is rotated in a horizontal rotation manner at the coating station, so that the surface of the workpiece can be circularly coated independently. The second rotating motor is arranged between the first cylinder structure and the magnetic block 7 to drive the magnetic block 7 to rotate the tool. The positioning coating method in S2 uses an oil brush assembly for oiling operation. The oil brush assembly is installed at the coating station, and targeted positioning coating is carried out for wafers with different specification diameters and different coating areas through the oil brush assembly.

[0030] As Figure 3 、 5 shown in the figure, the oil brush assembly includes a support member 8, an upper oil brush 9 and a lower oil brush 10. The support member 8 is movably connected to the support frame 6. The upper oil brush 9 and the lower oil brush 10 are detachably connected to the support frame 6. The bristles of the upper oil brush 9 and the lower oil brush 10 are made of soft materials and are in contact with each other. The horizontal height of the workpiece during transportation is between the upper oil brush 9 and the lower oil brush 10, so that the upper surface of the workpiece is in contact with the upper oil brush 9 and the lower surface is in contact with the lower oil brush 10. The contact width of the workpiece is positioned by moving the position of the support member 8, and single-sided and double-sided coating are positioned by detaching the upper oil brush 9 and the lower oil brush 10, so that the workpiece can be coated at the specified position according to the coating requirements.

[0031] As Figure 1 , 3 shown, in S2, the coated workpiece continues to be horizontally conveyed to separate the magnetic block 7 from the workpiece at the stretching waiting station, so as to prepare the workpiece before entering the stretching station. A material positioning component is used for separation at the stretching waiting station. The material positioning component includes a placing round table 11 and a blanking rod 12. The placing round table 11 is connected to the support frame 6. There are two blanking rods 12 and they are mirror-connected to the side of the placing round table 11. When the workpiece passes through the placing round table 11, the cylinder structure one resets upward, and the workpiece is blocked by the blanking rod 12 and falls on the placing round table 11, and the magnetic block 7 and the workpiece are quickly separated through the blanking rod 12.

[0032] As Figure 1 , 6 , and as shown in 7, in S3 to S5, a transfer station is arranged on one side of the stretching station, the flipping station, the punching station, the trimming and edge shrinking station, and the material collecting station for transferring the workpiece. The transfer operation is carried out by a manipulator structure. The manipulator structure is installed at the transfer station. The fixing method of the manipulator for the workpiece is the fixing direction of clamping from both sides, so that the workpiece realizes the transfer operation from the placing round table 11 to the material collecting station. After the workpiece is transferred and placed at the stretching station, a positioning component is used for centering and post-stretching positioning of the workpiece. The offset workpiece is pushed by the positioning component, and the workpiece with a gradually increasing length is displaced to facilitate the transfer by the manipulator structure.

[0033] As Figure 6 shown, the positioning component includes a cylinder structure two, a spring structure, a push rod 13 and a push ring 14. The stretching station and the punching station are both connected to a workbench 15. The workbench 15 is provided with a punching groove 16. A lower die 17 is connected in the punching groove 16. The cylinder structure two is connected to the workbench 15. There are four cylinder structures two and they are evenly arranged on the four sides of the punching groove 16. The push rod 13 is connected to the cylinder structure two. One end of the spring structure is connected to the bottom of the punching groove 16, and the other end of the spring structure is connected to the push ring 14. The push ring 14 and the spring structure are both sleeved on the lower die 17.

[0034] As Figures 1-7 shown: At the stretching station and the punching station, a hydraulic mechanism is installed for stamping and punching operations. An upper die adapted to the lower die 17 is installed on the hydraulic mechanism. According to the process flow of S4, the corresponding dimensions and types of stamping or punching of the upper die and the lower die 17 are adapted. The arrangement method of multiple hydraulic mechanisms is a linear arrangement method to form an assembly line operation. The loading station is arranged on the left side of the coating station, the material collecting station is arranged on the right side of the punching station, the trimming and edge shrinking station is located between the punching station and the material collecting station, and multiple telescopic stations are arranged at the front and rear ends of the turning station to ensure the stamping uniformity and process efficiency.

[0035] The specific process of integral forming of workpieces is as follows: Preparation work: (1) Stock preparation: Stack the workpieces integrally in the loading box 1, and store the workpieces obliquely in the loading box 1 for stock preparation. (2) Adjust the position of the workpiece stretching oil: Move the support 8 to adjust the contact depth between the upper and lower oil brushes 9 and 10 on both sides and the workpiece, and control the area to be coated on the workpiece surface (remove the upper oil brush 9 or the lower oil brush 10 when applying oil on one side).

[0036] Loading: Rotate the anti-slip sleeve 4 to push the uppermost workpiece in the loading box 1 to move and transition to the support table 5, and drive the magnetic block 7 to descend and adsorb at the center of the workpiece.

[0037] Transportation and oil application: Horizontally move the magnetic block 7 to make the workpiece leave the support table 5, horizontally move the workpiece between the upper oil brush 9 and the lower oil brush 10 and stop moving, and horizontally rotate the workpiece to achieve annular coating of stretching oil on the workpiece surface by the upper oil brush 9 or the lower oil brush 10.

[0038] Unloading: Continue to horizontally move the workpiece until it stops between the unloading rod 12 and the placement turntable 11, move the magnetic block 7 upward, and the workpiece is limited by the unloading rod 12 and remains on the placement turntable 11.

[0039] Correct the position of the workpiece: Use the manipulator to pick up the workpiece from the placement turntable 11 and place it on the lower die of the stamping groove 16, move the four push rods 13 to push the workpiece, so that the center of the workpiece coincides with the central axis of the lower die 17.

[0040] Stretching: Start the hydraulic mechanism to make the upper die cooperate with the lower die to stamp the workpiece. The workpiece changes from a circular shape to a cylindrical structure. After the liquid mechanism resets, the push ring 14 is pushed upward by the restoring force of the spring structure to push the workpiece out of the lower die 17, and then it is transferred by the manipulator to the stamping groove 17 of the next stretching station, and the operation of correcting the position of the workpiece is repeated.

[0041] Flipping: After the workpiece undergoes two stretches, the manipulator moves the workpiece to the flipping station to invert the workpiece by 180°, and then transfers it to the next stretching station for reverse stretching.

[0042] Punching: After stretching, the workpiece is made to be the size of the specification of the produced fire extinguisher cylinder body, transfer the workpiece to the punching station, correct the position of the workpiece, and perform punching operation to open a hole at one end of the workpiece for sealing; Trimming and necking: Transfer the workpiece to the trimming and necking station to cut the port of one end of the fire extinguisher cylinder body. The port of the cut cylinder body is neat, and the port of the cylinder body is necked inward.

[0043] Aggregation: Transfer the workpiece to the aggregation station for unified aggregation, and the production process of integral forming of the workpiece ends.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fully automatic multi-station workpiece integrated forming process, characterized in that: The steps include: S1: prepare a number of workpieces with disc-shaped structures. Before loading, the workpieces are stored in multiple pieces at the loading station. The mutual adsorption force generated after the workpieces are stored is overcome by separation operation, so that the workpiece stored at the top is separated from the workpiece below, thereby realizing piece-by-piece loading, and the separated single workpiece is transported; S2: The workpiece stays at the coating station to apply the stretching oil to the workpiece, and the workpiece surface is evenly coated with the oil by positioning the coating method; S3: The workpiece is transported to the stretching waiting station for unloading. During unloading, the surface contact with the workpiece is reduced to prevent wiping of the stretching oil; S4: The workpiece is transferred to the stretching station. The position of the placed workpiece is confirmed by positioning and adjusting to ensure that the center of the workpiece coincides with the center point of the stretching operation. Multiple stretching stations are set. The workpiece is positioned and discharged after stretching. A flipping station is set between the stretching stations to flip the workpiece. During the stretching, the workpiece with a disc-shaped structure becomes a cylindrical structure. After multiple stretching, the diameter of the workpiece gradually decreases. S5: After being stretched, the workpiece is open at one end and closed at the other end. The workpiece is transferred to the punching station to perform a punching operation on the sealed end of the workpiece. S6: The workpiece is transferred to the trimming and shrinking station, and one end of the workpiece opening is cut to make the end surface of the workpiece opening neat and shrink the edge, and the workpiece is transferred for unloading and placed in the gathering station.

2. The fully automatic multi-station workpiece integral forming process according to claim 1 is characterized in that: In the S1, the storage method adopted is to stack multiple disc-shaped workpieces in an overlapping manner, and the prepared workpieces are placed in an inclined state with one end higher than the other end. The storage container for the prepared materials in the S1 adopts a loading box (1), and the loading box (1) is placed at the loading station. The workpieces are kept in an inclined state in the loading box (1). The method for taking out the workpieces from the loading box (1) in the S1 is to take out the stacked workpieces sideways.

3. The fully automatic multi-station workpiece integral forming process according to claim 2 is characterized in that: The bottom of the loading box (1) is provided with a lifting bottom plate (2), the upper surface of the lifting bottom plate (2) is an inclined surface, and the workpieces are placed on the upper surface of the lifting bottom plate (2) for inclined stacking. A step is added in S1, specifically: the height of the workpieces is raised so that the top workpiece can always be in a suitable position. The loading box (1) is provided with a lifting motor, and the lifting bottom plate (2) is connected to the lifting motor, so that the workpieces are continuously loaded by rising on the lifting bottom plate (2), and the workpieces are replenished in batches by lowering the lifting bottom plate (2).

4. The fully automatic multi-station workpiece integral forming process according to claim 3 is characterized in that: In S1, the separation operation is performed at the box opening and one side of the loading box (1). A separation structure and a conveying structure are used in the separation operation. The separation structure is installed at the box opening of the loading box (1) to separate the top layer of workpieces from the lower layer of workpieces. The conveying structure is on one side of the loading box (1) so that the separated workpieces are conveyed toward the coating station. Specifically, the workpieces are conveyed horizontally by magnetic adsorption using the metal properties of the workpieces.

5. The fully automatic multi-station workpiece integral forming process according to claim 4 is characterized in that: The separation structure comprises a discharge roller (3), the discharge roller (3) is sleeved with an anti-slip sleeve (4), the loading box (1) is equipped with a rotating motor (1), the discharge roller (3) is connected to the rotating motor (1), the discharge roller (3) is rotatably connected to the box opening of the loading box (1), the workpiece is in contact with the anti-slip sleeve (4), the conveying structure comprises a linear conveyor, a cylinder structure (1), a support table (5), a support frame (6) and a magnetic block (7), the support frame (6) is placed on the side of the loading box (1), the linear conveyor and the support table ( 5) are connected to the support frame (6), the magnetic block (7) is connected to the cylinder structure one, the cylinder structure one is connected to the linear conveyor, the support platform (5) and the magnetic block (7) are arranged relative to each other up and down, the distance between the support platform (5) and the anti-slip sleeve (4) is smaller than the diameter of the workpiece, so that the workpiece is pushed by the anti-slip sleeve (4) to transition to the support platform (5), the cylinder structure one ensures that the workpiece stays at a suitable position on the support platform (5) and then drives the magnetic block (7) to adsorb to the center of the workpiece, and the linear conveyor drives the workpiece to move horizontally.

6. The fully automatic multi-station workpiece integral forming process according to claim 1 is characterized in that: In S2, the coating station is arranged on the support frame (6) and is mirror-imaged on both sides of the workpiece. A step is added in S2, specifically: the workpiece is rotated in a horizontal rotation manner at the coating station so that the surface of the workpiece can be autonomously coated in a circular manner, and the rotating motor 2 is arranged between the cylinder structure 1 and the magnetic block (7) to drive the magnetic block (7) to realize the rotation of the tool. The positioning coating method in S2 adopts an oil brush assembly for oiling, and the oil brush assembly is installed at the coating station. The oil brush assembly is used to perform targeted positioning coating for discs of different diameters and different coating areas.

7. The fully automatic multi-station workpiece integral forming process according to claim 6 is characterized in that: The oil brush assembly comprises a support member (8), an upper oil brush (9) and a lower oil brush (10); the support member (8) is movably connected to the support frame (6); the upper oil brush (9) and the lower oil brush (10) are detachably connected to the support frame (6); the bristles of the upper oil brush (9) and the lower oil brush (10) are made of soft materials and fit together; the horizontal height of the workpiece during transportation is placed between the upper oil brush (9) and the lower oil brush (10), so that the upper surface of the workpiece is in contact with the upper oil brush (9) and the lower surface is in contact with the lower oil brush (10); the contact width of the workpiece is positioned by moving the position of the support member (8); and the single-sided and double-sided coating is positioned by disassembling the upper oil brush (9) and the lower oil brush (10), so that the workpiece is coated at a designated position according to coating requirements.

8. The fully automatic multi-station workpiece integral forming process according to claim 1 is characterized in that: In S2, the workpiece after coating continues to be transported horizontally, so as to separate the magnetic block (7) from the workpiece at the stretching waiting station, so that the workpiece can be prepared before entering the stretching station. A material setting component is used for separation at the stretching waiting station, and the material setting component includes a placing truncated table (11) and a material discharge rod (12). The placing truncated table (11) is connected to the support frame (6), and the material discharge rod (12) is provided with two and mirror-connected to the side of the placing truncated table (11), so that when the workpiece passes through the placing truncated table (11), the cylinder structure resets upward, the workpiece is blocked by the material discharge rod (12) and falls on the placing truncated table (11), and the magnetic block (7) and the workpiece are quickly separated by the material discharge rod (12).

9. The fully automatic multi-station workpiece integral forming process according to claim 8, characterized in that: In S3 to S5, a transfer station is provided on one side of the stretching station, the flipping station, the punching station, the trimming and shrinking station, and the gathering station to transfer the workpiece. The transfer operation is performed by a robot structure. The robot structure is installed at the transfer station. The robot fixes the workpiece by clamping it from both sides, so that the workpiece can be transferred from the placement table (11) to the gathering station. After the workpiece is transferred and placed at the stretching station and the punching station, a positioning component is used to perform workpiece center positioning and post-stretching positioning. The positioning component is used to push the offset workpiece, and the displacement of the workpiece with gradually increasing length facilitates the transfer of the robot structure.

10. The fully automatic multi-station workpiece integral forming process according to claim 9, characterized in that: The positioning assembly comprises a second cylinder structure, a spring structure, a push rod (13) and a push ring (14); the stretching station and the punching station are both connected to a workbench (15); the workbench (15) is provided with a punching groove (16); a lower die (17) is connected to the inside of the punching groove (16); the second cylinder structure is connected to the workbench (15); the second cylinder structure is provided with four springs which are evenly arranged on four sides of the punching groove (16); the push rod (13) is connected to the second cylinder structure; one end of the spring structure is connected to the bottom of the punching groove (16); the other end of the spring structure is connected to the push ring (14); the push ring (14) and the spring structure are both sleeved with the lower die (17).

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