Stretching processing system of multi-layer combined stainless steel vacuum cup

Abstract

The invention discloses a stretching machining system for a multi-layer combined stainless steel vacuum cup, and relates to the technical field of metal stamping, the stretching machining system comprises a machining table, the front and rear parts of the upper end of the machining table are each provided with a lead screw driving assembly, and the two lead screw driving assemblies are each provided with an outer layer clamping assembly and an inner layer clamping assembly; a conveying plate is movably installed above the machining table, an adjusting plate is rotatably installed at the upper end of the conveying plate, feeding clamping assemblies are installed at the front end and the rear end of the adjusting plate, material pipes are movably installed on one sides of the feeding clamping assemblies, a cup bottom stretching table is installed on one side of the upper end of the machining table, a hydraulic rod is arranged above the cup bottom stretching table, and a pressure plate is installed below the hydraulic rod. The bidirectional lead screw driving assembly drives the inner-layer clamping assembly and the outer-layer clamping assembly to synchronously and automatically center, rapid and accurate concentric alignment of the inner-layer cup blank and the outer-layer cup blank is achieved, the problem of center deviation is solved fundamentally, the phenomena of eccentricity, pseudo soldering and air leakage in follow-up laser welding are avoided, vacuum layer failure is eradicated, and the product rejection rate is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of stamping metal technology, specifically to a stretching processing system for a multi-layer combined stainless steel thermos cup. Background Technology

[0002] Multi-layer stainless steel thermos cups are the mainstream heat-insulating containers. They are usually made by assembling an inner cup body and an outer cup body, and then processing them through laser welding at the mouth, sealing the bottom edge, and vacuum treatment. The concentricity of the inner and outer blanks, the flatness of the bottom forming, and the tightness of the interlayer bonding directly determine the welding sealing performance, vacuum insulation effect, and product qualification rate of the thermos cup.

[0003] Currently, existing inner and outer layer blanks suffer from poor positioning accuracy, leading to issues like eccentricity, incomplete welds, and air leaks during laser welding. In existing processing equipment, the inner and outer stainless steel cup blanks are often positioned manually, using single-sided clamps or separate clamps, lacking a unified coaxial positioning reference. This makes it highly susceptible to misalignment and excessive coaxiality deviations during placement. Furthermore, existing positioning mechanisms lack automatic centering adjustment, relying entirely on manual visual correction, resulting in extremely low positioning efficiency and unreliable positioning accuracy. Subsequent laser welding stations are prone to uneven welds, incomplete welds, and air leaks due to insufficient concentricity, directly causing vacuum layer failure and high product scrap rates. Additionally, the bottom support components of traditional thermos cup stretching molds are mostly fixed, integrated structures without elastic floating or pressure monitoring functions, hindering the stretching process. In this process, the extrusion pressure on stainless steel billets cannot be controlled in real time. For stainless steel billets of different thicknesses and materials, it is easy to encounter problems such as excessive local pressure leading to cup bottom indentation and deformation, or insufficient pressure leading to loose bonding between inner and outer cup layers and excessive gaps between layers. At the same time, the inner and outer billets need to be manually handled and placed on the processing platform separately. There is no dedicated automatic feeding and synchronous clamping mechanism, which not only results in high labor intensity and slow feeding efficiency, but also makes it easy for billets to be scratched, bumped and deformed due to human operation errors. Some semi-automatic equipment only has the function of feeding single billets and cannot achieve synchronous feeding and positioning of inner and outer billets. The process connection is cumbersome, the overall production line has poor continuity, and it is difficult to meet the needs of large-scale and high-efficiency production. Summary of the Invention

[0004] The purpose of this invention is to provide a stretching processing system for multi-layer combined stainless steel thermos cups to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a stretching processing system for a multi-layer combined stainless steel thermos cup, comprising a processing table, wherein screw drive assemblies are installed at both the front and rear of the upper end of the processing table, an outer layer clamping assembly and an inner layer clamping assembly are respectively installed on the two screw drive assemblies, a conveying plate is movably installed above the processing table, an adjusting plate is rotatably installed at the upper end of the conveying plate, a feeding clamping assembly is installed at both the front and rear ends of the adjusting plate, a material tube is movably installed on one side of each feeding clamping assembly, a cup bottom stretching table is installed on one side of the upper end of the processing table, a hydraulic rod is provided above the cup bottom stretching table, and a pressure plate is installed below the hydraulic rod.

[0006] Preferably, the lead screw drive assembly includes a bidirectional screw, a mounting plate, a threaded drive block, and a stepper motor. Two mounting plates are installed on the front and rear of the upper end of the machining table. A bidirectional screw is rotatably mounted between the two mounting plates. A stepper motor is installed at one end of any one mounting plate. The output end of the stepper motor is connected to the bidirectional screw. Threaded drive blocks are threaded to both sides of the surface of the bidirectional screw. The threaded drive blocks are guided by guide rods.

[0007] Preferably, the outer clamping assembly includes a second mounting plate, a first bracket, a first upright, and an outer clamping plate. The second mounting plate is installed above the front end of the threaded drive block. The first bracket is detachably installed on one side of each of the two second mounting plates. The first upright is installed on the upper end of the first bracket, and the outer clamping plate is installed on one end of the first upright.

[0008] Preferably, the inner clamping assembly includes a mounting plate three, a vertical pole two, an inner clamping plate and a support plate. The mounting plate three is installed below the rear ends of the two front threaded drive blocks. The vertical pole two is detachably installed on one side of the mounting plate three. The support plate is installed at one end of the vertical pole two. The inner clamping plate is installed at one end of the vertical pole two above the support plate.

[0009] Preferably, both mounting plate two and mounting plate three are provided with insertion slots at their upper ends, and insertion blocks are installed inside each insertion slot. Both the insertion slots and insertion blocks are T-shaped. The insertion blocks are limited by fixing bolts, and bracket one and upright two are installed at one end of the insertion block.

[0010] Preferably, electric slide rails are installed at both the front and rear of the processing table, the conveyor plate is installed between the two electric slide rails, a rotary motor is installed at the lower end of the conveyor plate, and the adjusting plate is installed at the output end of the rotary motor.

[0011] Preferably, the feeding clamping assembly includes a moving block, a rotating plate, a connecting rod, a feeding clamping plate, and a second stepper motor. The second stepper motor is installed at both the front and rear ends of the adjusting plate, and a rotating plate is installed at the output end of each of the second stepper motors. A connecting rod is hinged to both ends of the rotating plate, and a moving block is hinged to one end of each connecting rod. A feeding clamping plate is movably installed on the opposite end surfaces of the two moving blocks.

[0012] Preferably, the surface of the adjusting plate on one side of the moving block is provided with guide grooves, and a guide block is installed at one end of the moving block. The moving block is slidably installed inside the guide groove. Two guide rods are slidably installed at one end of the moving block through through holes. The feeding clamping plate is installed at one end of the two guide rods. Spring springs are installed on the surface of the guide rods between the feeding clamping plate and the moving block.

[0013] Preferably, the material tube is cylindrical and hollow inside, a support plate is installed at the bottom of the material tube, a picking groove is provided on the surface of the material tube above the support plate, and a placement groove is provided at the upper end of the cup bottom stretching platform.

[0014] Preferably, a connecting frame is installed at one end of the hydraulic rod, a fixing plate is installed at the lower end of the connecting frame, two moving rods are installed at the upper end of the fixing plate through a through hole, a return spring is installed on the surface of the moving rod, a pressure detector is installed at the lower end of the fixing plate between the two moving rods, and a pressure plate is installed at the lower end of the two moving rods together. The pressure detector and the hydraulic rod control system are electrically connected.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The stretching processing system of this multi-layer combined stainless steel thermos cup uses a bidirectional screw drive assembly to drive the inner and outer layer clamping assemblies to automatically center synchronously, achieving rapid and accurate concentric alignment of the inner and outer cup blanks. This solves the center offset problem at its source, avoids eccentricity, incomplete welding, and air leakage in subsequent laser welding, eliminates vacuum layer failure, significantly reduces product scrap rate, and improves the welding sealing and heat preservation effect of the thermos cup.

[0017] 2. The stretching processing system of this multi-layer stainless steel thermos cup uses a floating pressure plate with a return spring to achieve flexible contact in the initial stretching stage, avoiding instantaneous high pressure tearing of thin-walled stainless steel sheets; in conjunction with a pressure detector to monitor the pressure value in real time, it automatically adjusts the downward speed and pressure of the hydraulic rod in a closed loop, which can adapt to blanks of different thicknesses and materials. It prevents excessive pressure from causing the bottom of the cup to sink and deform, and also avoids insufficient pressure from causing loose bonding between layers and excessive gaps, ensuring that the bottom of the cup is formed flat and the layers are tightly bonded.

[0018] 3. The stretching processing system for this multi-layer stainless steel thermos cup uses a hollow material tube to centrally store the blanks. Combined with a feeding clamping component, electric slide rail, and rotary motor, it automatically grabs the inner and outer blanks, alternately feeds them, and automatically transfers them to the workstation. The entire process requires no manual operation, reducing labor intensity and avoiding scratches, bumps, and deformations of the blanks caused by human error. It achieves synchronous positioning and continuous processing of the inner and outer blanks, optimizes process connections, improves production line continuity, and meets the needs of large-scale, high-efficiency production.

[0019] 4. The stretching processing system for this multi-layer combined stainless steel thermos cup adopts a T-type plug-in quick-installation structure for the inner and outer layer clamping components. With a detachable design, the clamping accessories can be quickly replaced and the clamping spacing adjusted without disassembling the entire equipment. It is suitable for processing double-layer thermos cup blanks of different diameters, thicknesses and specifications, which greatly shortens the changeover and debugging time, solves the problems of poor adaptability and cumbersome changeover of traditional fixtures, and improves the equipment's versatility and flexible production capabilities.

[0020] 5. The stretching processing system of this multi-layer combined stainless steel thermos cup has a built-in elastic spring and guide rod in the feeding clamping component. It adopts flexible clamping instead of rigid clamping, adaptively matches the size of the blank, and avoids squeezing, crushing, and deforming of thin-walled stainless steel blanks during clamping. It protects the integrity of the blank surface in all aspects and further improves the appearance quality of the finished product and the overall yield rate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the feeding clamping assembly of the present invention;

[0023] Figure 3 This is a schematic diagram of the material tube structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the inner clamping component and the outer clamping component of the present invention;

[0025] Figure 5 This is a cross-sectional schematic diagram of the inner clamping assembly and the outer clamping assembly of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the driving component of the present invention;

[0027] Figure 7 This is a schematic diagram of the cup bottom stretching platform and pressure plate of the present invention;

[0028] Figure 8 This is a cross-sectional view of the pressure plate installation of the present invention.

[0029] In the diagram: 1. Processing table; 2. Drive assembly; 3. Outer clamping assembly; 4. Inner clamping assembly; 5. Adjusting plate; 6. Feeding clamping assembly; 7. Material tube; 8. Cup bottom stretching table; 9. Hydraulic rod; 10. Pressure plate; 11. Insertion slot; 12. Insertion block; 13. Fixing bolt; 14. Electric slide rail; 15. Rotary motor; 16. Guide groove; 17. Guide block; 18. Spring; 19. Bearing plate; 20. Picking slot; 21. Connecting frame; 22. Fixing plate; 23. Moving rod; 24. Return spring; 5. Pressure detector; 26. Placement trough; 27. Conveyor plate; 28. Guide rod; 201. Bidirectional screw; 202. Mounting plate one; 203. Threaded drive block; 204. Stepper motor one; 301. Mounting plate two; 302. Bracket one; 303. Upright pole one; 304. Outer clamping plate; 401. Mounting plate three; 402. Upright pole two; 403. Inner clamping plate; 404. Support plate; 601. Moving block; 602. Rotating plate; 603. Connecting rod; 604. Feeding clamping plate; 605. Stepper motor two. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] like Figures 1 to 8As shown, the stretching processing system for the multi-layer combined stainless steel thermos cup in this embodiment includes a processing table 1, which serves as the base for the entire machine to ensure the stability of the equipment operation. Screw drive assemblies 2 are installed at both the front and rear of the upper end of the processing table 1. These screw drive assemblies 2 are used to precisely drive the opening, closing, and alignment of the inner and outer layer clamping assemblies, thereby fixing and aligning the outer and inner layers of the stainless steel cup. Outer layer clamping assemblies 3 and inner layer clamping assemblies 4 are respectively installed on the two screw drive assemblies 2. A conveyor plate 27 is movably installed above the processing table 1, and an adjusting plate is rotatably installed on the upper end of the conveyor plate 27. 5. The front and rear ends of the adjustment plate 5 are equipped with feeding clamping components 6. The feeding clamping components 6 are movably installed with material pipes 7 on one side. The feeding clamping components 6 and material pipes 7 cooperate with each other to realize automatic storage and feeding of cup body raw materials, replacing manual feeding. The upper side of the processing table 1 is equipped with a cup bottom stretching table 8. A hydraulic rod 9 is set above the cup bottom stretching table 8. A pressure plate 10 is installed below the hydraulic rod 9. The cup bottom stretching table 8, together with the hydraulic rod 9 and the pressure plate 10, performs integrated stretching and forming of the cup bottom of the aligned double-layer stainless steel plate, automatically completing the processing of the basic blank of the double-layer insulated cup.

[0033] Specifically, the lead screw drive assembly 2 includes a bidirectional screw 201, a mounting plate 202, a thread drive block 203, and a stepper motor 204. Two mounting plates 202 are mounted on the front and rear of the upper end of the processing table 1. The bidirectional screw 201 is rotatably mounted between the two mounting plates 202. A stepper motor 204 is mounted on one end of either mounting plate 202. The output end of the stepper motor 204 is connected to the bidirectional screw 201. Thread drive blocks 203 are threadedly connected to both sides of the surface of the bidirectional screw 201. 3. Guided by a guide rod, and powered by a stepper motor 204, the bidirectional screw 201 is driven to rotate in either the forward or reverse direction. The bidirectional screw 201 adopts a bidirectional thread structure, which can drive the threaded drive blocks 203 on both sides to move synchronously towards or away from each other when rotating. The guide rod limits and guides the threaded drive blocks 203 to prevent deviation or jamming during movement and ensure the straightness of movement. This component can precisely adjust the spacing and position of the clamping components, adapt to double-layer stainless steel cup plates of different specifications and sizes, and achieve rapid and accurate alignment of the inner and outer layers of plates.

[0034] Furthermore, the outer clamping assembly 3 includes a second mounting plate 301, a first bracket 302, a first upright rod 303, and an outer clamping plate 304. The second mounting plate 301 is installed above the front end of the rear threaded drive block 203. The first bracket 302 is detachably installed on one side of each of the two second mounting plates 301. The first upright rod 303 is installed on the upper end of the first bracket 302. The outer clamping plate 304 is installed on one end of the first upright rod 303. The outer clamping plates 304 are symmetrically arranged and move closer together under the drive of the screw drive assembly 2 to clamp the outer layer of the stainless steel thermos cup. The detachable structure is easy to disassemble and replace. Different specifications of clamping plates can be replaced according to different cup shapes, which is highly versatile and ensures that the outer and inner layers remain concentric when clamped.

[0035] Furthermore, the inner clamping assembly 4 includes mounting plate three 401, upright rod two 402, inner clamping plate 403, and support plate 404. Mounting plate three 401 is installed below the rear end of the two front threaded drive blocks 203. Upright rod two 402 is detachably installed on one side of mounting plate three 401. Support plate 404 is installed at one end of upright rod two 402. Inner clamping plate 403 is installed at one end of upright rod two 402 above support plate 404. Support plate 404 is used to support the stainless steel inner layer plate at the bottom and support the inner layer plate. Inner clamping plate 403 is used to clamp the inner layer laterally. It cooperates with outer clamping assembly 3 to complete the layered fixing and coaxial alignment of the inner and outer layers of plates. The detachable upright rod two 402 facilitates adjustment of clamping position and height to match outer clamping assembly 3. It is suitable for double-layer cup body raw materials of different thicknesses and diameters.

[0036] Furthermore, both mounting plate 2 (301) and mounting plate 3 (401) are equipped with insertion slots 11 on their upper ends. Insertion blocks 12 are installed inside each insertion slot 11. Both insertion slots 11 and insertion blocks 12 are T-shaped. Insertion blocks 12 are limited by fixing bolts 13. Bracket 1 (302) and upright 2 (402) are installed at one end of insertion block 12. The T-shaped insertion slots 11 and insertion blocks 12 have a limiting and anti-detachment function to prevent them from falling off under lateral force. Through insertion and locking with fixing bolts 13, bracket 1 (302) and upright 2 (402) can be quickly disassembled and installed and their lateral position adjusted. Operators can quickly change clamping accessories and adjust clamping spacing according to the pipe diameter and number of layers required by the thermos cup, without disassembling the entire equipment, thus shortening the changeover and debugging time.

[0037] Furthermore, electric slide rails 14 are installed at both the front and rear of the processing table 1. The conveyor plate 27 is installed between the two electric slide rails 14. A rotary motor 15 is installed at the lower end of the conveyor plate 27. An adjusting plate 5 is installed at the output end of the rotary motor 15. The electric slide rails 14 serve as a horizontal conveying power mechanism, driving the conveyor plate 27 and the workpiece and the feeding clamping assembly 6 above to move horizontally back and forth, realizing the automatic transfer of raw materials from the storage area to the stretching processing area. The rotary motor 15 drives the adjusting plate 5 to rotate at an angle, so that the inner and outer cup materials after clamping are placed alternately. The two work together to realize automated conveying and posture adjustment.

[0038] Furthermore, the feeding clamping assembly 6 includes a moving block 601, a rotating plate 602, a connecting rod 603, a feeding clamping plate 604, and a second stepper motor 605. The second stepper motor 605 is installed at both the front and rear ends of the adjusting plate 5. A rotating plate 602 is installed at the output end of each second stepper motor 605. A connecting rod 603 is hinged to both ends of the rotating plate 602. A moving block 601 is hinged to one end of each connecting rod 603. The feeding clamping plate 604 is movably installed on the opposite surfaces of the two moving blocks 601. The second stepper motor 605 drives the rotating plate 602 to rotate, forming a linkage transmission structure through the hinged connecting rod 603, causing the two moving blocks 601 to move synchronously towards or away from each other; thereby driving the opening and closing movement of the feeding clamping plate 604, realizing the automatic clamping and releasing of the stainless steel sheet and pipe inside the material tube 7. The linkage transmission structure provides stable transmission, fast response speed, and uniform clamping force, preventing material compression and deformation.

[0039] Furthermore, the surface of the adjusting plate 5 on one side of the moving block 601 is provided with guide grooves 16, and a guide block 17 is installed at one end of the moving block 601. The moving block 601 is slidably installed inside the guide groove 16. Two guide rods 28 are slidably installed at one end of the moving block 601 through through holes. The feeding clamping plate 604 is installed at one end of the two guide rods 28. The surface of the guide rods 28 between the feeding clamping plate 604 and the moving block 601 is provided with elastic springs 18. The guide grooves 16 and the guide blocks 17 cooperate with each other to limit the movement trajectory of the moving block 601, ensure smooth opening and closing, and prevent deviation and jamming. The guide rods 28 vertically limit the feeding clamping plate 604 to ensure clamping accuracy. The elastic springs 18 form an elastic buffer clamping structure, which can adapt to the size of the raw material during clamping, flexibly bear force, and avoid the stainless steel thin-walled plate being crushed, dented, or deformed due to rigid clamping, thus meeting the protection requirements of thin-walled stainless steel material stretching processing.

[0040] Furthermore, the material tube 7 is cylindrical and hollow inside. A support plate 19 is installed at the bottom of the material tube 7. A pick-up groove 20 is provided on the surface of the material tube 7 above the support plate 19. A placement groove 26 is provided on the upper end of the cup bottom stretching table 8. The hollow cylindrical material tube 7 is used to stack and store the stainless steel inner and outer layer stretching blanks to be processed, realizing centralized material storage and facilitating continuous feeding. The support plate 19 provides bottom support for the stacked raw materials to prevent them from falling. The pick-up groove 20 reserves operating space to facilitate the clamping components to reach in and grab the raw materials. The placement groove 26 of the cup bottom stretching table 8 is used to limit and fix the double-layer plate to be stretched, prevent the plate from sliding during the stretching process, limit the stretching processing position, and ensure the regularity of the cup bottom and cup body assembly.

[0041] Furthermore, a connecting frame 21 is installed at one end of the hydraulic rod 9, and a fixing plate 22 is installed at the lower end of the connecting frame 21. Two moving rods 23 are installed on the upper end of the fixing plate 22 through through holes. A return spring 24 is installed on the surface of the moving rods 23. A pressure detector 25 is installed at the lower end of the fixing plate 22 between the two moving rods 23. The pressure plate 10 is installed at the lower end of the two moving rods 23. The pressure detector 25 and the hydraulic rod 9 control system are electrically connected. The hydraulic rod 9 provides downward stretching driving force, and the cup bottom stretching is completed by the pressure plate 10. The moving rods 23, together with the return spring 24, enable the pressure plate 10 to have the ability to float up and down and buffer. In the initial stage of stretching, it flexibly contacts the raw material to avoid tearing the stainless steel sheet due to excessive instantaneous pressure. The pressure detector 25 detects the pressure value in real time during the stretching process and feeds it back to the control system to automatically adjust the downward speed and pressure of the hydraulic rod 9. The stretching parameters can be adaptively adjusted according to the thickness and hardness of the sheet to prevent poor forming due to insufficient pressure and sheet cracking due to excessive pressure.

[0042] The usage method of this embodiment is as follows: First, the material tube 7 is a hollow cylindrical structure for storing stainless steel inner and outer layer stretched billets in a concentrated stack. The bottom is supported by the bearing plate 19 to prevent it from falling. The picking groove 20 provides space for the feeding clamping assembly 6 to extend into. During feeding, the stepper motor 605 drives the rotating plate 602 to rotate. Through the connecting rod 603, the moving block 601 moves towards each other along the guide groove 16. The two feeding clamping plates 604 are in the open state. The electric push rod pushes the material tube 7 to move between the feeding clamping plates 604, driving the feeding clamping plates 604 to clamp the billet in the material tube 7. The guide rod 28 cooperates with the elastic spring 18 to achieve flexible clamping, avoiding damage to the thin-walled plate, and completing the automatic gripping of the raw material. Then, the electric push rod retracts to drive the material tube 7. Returning to its original position, under the action of gravity, there will always be material inside the retrieval slot 20; then the electric slide rail 14 drives the conveyor plate 27 to move horizontally along the processing table 1, conveying the loading clamping assembly 6 holding the blank to the designated station. The loading clamping plate 604 releases its clamping of the inner blank, and the inner blank falls onto the pallet 404. The stepper motor 204 of one drive assembly 2 drives the bidirectional screw 201 to rotate, driving the threaded drive blocks 203 on both sides to move synchronously towards each other along the guide rod, driving the two uprights on the inner clamping assembly 4. The inner clamping plate 402 and the inner clamping plate 403 clamp the inner blank; then the rotary motor 15 drives the adjusting plate 5 to rotate, so that the outer blank rotates to above the outer clamping plate 304. The feeding clamping plate 604 releases its clamping of the outer blank, and the outer blank falls onto the bracket 302 on the outer clamping assembly 3. The stepper motor 204 of another drive assembly 2 drives the bidirectional screw 201 to rotate, causing the threaded drive blocks 203 on both sides to move synchronously towards each other along the guide rod, and causing the two uprights 3 on the outer clamping assembly 3 to move towards each other. 03 and the outer clamping plate 304 clamp the outer blank, achieving concentric placement of the inner and outer blanks, facilitating welding processing. When the cup bottom and cup body need to be combined, the cup bottom and cup body are initially combined, and then the cup bottom is placed inside the placement groove 26. The hydraulic rod 9 drives the pressure plate 10 to move downward, stretching the double-layer plate into a single piece. The moving rod 23 cooperates with the return spring 24 to give the pressure plate 10 initial flexible buffering capacity, preventing the plate from tearing due to excessive instantaneous pressure. The pressure detector 25 detects the pressure value during the stretching process in real time and feeds it back to the control system to automatically adjust the downward speed and pressure of the hydraulic rod 9. The parameters are adaptively adjusted according to the plate thickness and hardness to prevent insufficient pressure from causing poor forming or excessive pressure from causing plate breakage. After stretching, the return spring 24 drives the pressure plate 10 to automatically rebound, completing one combination operation of the cup bottom and cup body.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A stretching processing system for a multi-layer combined stainless steel thermos cup, comprising a processing table (1), characterized in that: The processing table (1) is equipped with a lead screw drive assembly (2) at both the front and rear ends. The two lead screw drive assemblies (2) are respectively equipped with an outer clamping assembly (3) and an inner clamping assembly (4). A conveying plate (27) is movably installed above the processing table (1). An adjusting plate (5) is rotatably installed on the upper end of the conveying plate (27). A feeding clamping assembly (6) is installed at both the front and rear ends of the adjusting plate (5). A material tube (7) is movably installed on one side of the feeding clamping assembly (6). A cup bottom stretching table (8) is installed on one side of the upper end of the processing table (1). A hydraulic rod (9) is set above the cup bottom stretching table (8). A pressure plate (10) is installed below the hydraulic rod (9).

2. The stretching processing system for the multi-layer combined stainless steel thermos cup according to claim 1, characterized in that: The lead screw drive assembly (2) includes a bidirectional screw (201), a mounting plate (202), a threaded drive block (203), and a stepper motor (204). Two mounting plates (202) are installed on the front and rear of the upper end of the processing table (1). The bidirectional screw (201) is rotatably installed between the two mounting plates (202). One end of the two mounting plates (202) on one side is equipped with a stepper motor (204). The output end of the stepper motor (204) is connected to the bidirectional screw (201). Threaded drive blocks (203) are threadedly connected to both sides of the surface of the bidirectional screw (201). The threaded drive blocks (203) are guided by guide rods.

3. The stretching processing system for the multi-layer combined stainless steel thermos cup according to claim 2, characterized in that: The outer clamping assembly (3) includes a second mounting plate (301), a first bracket (302), a first upright (303), and an outer clamping plate (304). The second mounting plate (301) is installed above the front end of the threaded drive block (203) at the rear. The first bracket (302) is detachably installed on one side of each of the two second mounting plates (301). The first upright (303) is installed on the upper end of the first bracket (302), and the outer clamping plate (304) is installed on one end of the first upright (303).

4. The stretching processing system for the multi-layer combined stainless steel thermos cup according to claim 3, characterized in that: The inner clamping assembly (4) includes mounting plate three (401), upright two (402), inner clamping plate (403) and tray (404). Mounting plate three (401) is installed below the rear end of the two front threaded drive blocks (203). Upright two (402) is detachably installed on one side of mounting plate three (401). Tray (404) is installed at one end of upright two (402). Inner clamping plate (403) is installed at one end of upright two (402) above tray (404).

5. The stretching processing system for the multi-layer combined stainless steel thermos cup according to claim 4, characterized in that: The upper ends of the second mounting plate (301) and the third mounting plate (401) are provided with insertion slots (11), and insertion blocks (12) are installed inside the insertion slots (11). The insertion slots (11) and the insertion blocks (12) are T-shaped. The insertion blocks (12) are limited by fixing bolts (13). The brackets (302) and the uprights (402) are installed at one end of the insertion blocks (12).

6. The stretching processing system for the multi-layer combined stainless steel thermos cup according to claim 1, characterized in that: Electric slide rails (14) are installed on the front and rear of the processing table (1). The conveyor plate (27) is installed between the two electric slide rails (14). A rotary motor (15) is installed at the lower end of the conveyor plate (27). The adjustment plate (5) is installed at the output end of the rotary motor (15).

7. The stretching processing system for a multi-layer combined stainless steel thermos cup according to claim 1, characterized in that: The feeding clamping assembly (6) includes a moving block (601), a rotating plate (602), a connecting rod (603), a feeding clamping plate (604), and a second stepper motor (605). The second stepper motor (605) is installed at both the front and rear ends of the adjusting plate (5). The rotating plate (602) is installed at the output end of the second stepper motor (605). The connecting rod (603) is hinged at both ends of the rotating plate (602). The moving block (601) is hinged at one end of the connecting rod (603). The feeding clamping plate (604) is movably installed on the opposite end surfaces of the two moving blocks (601).

8. The stretching processing system for a multi-layer combined stainless steel thermos cup according to claim 7, characterized in that: The adjustment plate (5) on one side of the moving block (601) is provided with guide grooves (16), and a guide block (17) is installed at one end of the moving block (601). The moving block (601) is slidably installed inside the guide groove (16). Two guide rods (28) are slidably installed at one end of the moving block (601) through the through hole. The feeding clamping plate (604) is installed at one end of the two guide rods (28). The surface of the guide rods (28) between the feeding clamping plate (604) and the moving block (601) is provided with elastic springs (18).

9. The stretching processing system for a multi-layer combined stainless steel thermos cup according to claim 1, characterized in that: The material tube (7) is cylindrical and hollow inside. A support plate (19) is installed at the bottom of the material tube (7). A pick-up groove (20) is provided on the surface of the material tube (7) above the support plate (19). A placement groove (26) is provided on the upper end of the cup bottom stretching table (8).

10. The stretching processing system for a multi-layer combined stainless steel thermos cup according to claim 1, characterized in that: A connecting frame (21) is installed at one end of the hydraulic rod (9), and a fixing plate (22) is installed at the lower end of the connecting frame (21). Two moving rods (23) are installed at the upper end of the fixing plate (22) through a through hole. A return spring (24) is installed on the surface of the moving rod (23). A pressure detector (25) is installed at the lower end of the fixing plate (22) between the two moving rods (23). The pressure plate (10) is installed together at the lower end of the two moving rods (23). The pressure detector (25) and the hydraulic rod (9) are electrically connected to the control system.

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