Automatic ironing and forming equipment and ironing and forming method for ton barrel lining bag opening

Abstract

The invention relates to automatic ironing forming equipment and an ironing forming method for a ton barrel lining bag opening, and belongs to the technical field of packaging container manufacturing. The automatic ironing forming equipment comprises a supporting frame, a lifting assembly and a hot processing assembly; the lifting assembly is vertically arranged on the supporting frame. The hot working assembly comprises a supporting piece and an electric heating ring, the supporting piece is detachably arranged at the lower end of the lifting assembly, and the electric heating ring is arranged at the lower end of the supporting piece. A hot working supporting platform is arranged on the supporting frame; the equipment further comprises a cloth placing assembly and non-perforated high-temperature-resistant cloth. The cloth placing assembly is used for automatically laying and removing the non-perforated high-temperature-resistant cloth. A controller is further arranged on the supporting frame. The method comprises the steps that the connecting film and the blocking net are synchronously welded to the valve cover through the first hot working assembly, and the valve cover is welded to the lining bag through the second hot working assembly; synchronous welding of the connecting film and the blocking net and automatic taking, placing and cooling of the high-temperature-resistant cloth without holes are achieved, the operation steps are simplified, and the production efficiency and the quality stability are improved.

Description

Technical Field

[0001] This application relates to the technical field of packaging container manufacturing, and in particular to an automatic hot-stamping molding device and method for the inner lining bag opening of a ton drum. Background Technology

[0002] A tonne container (BLC) is a medium-sized bulk container typically made of high-molecular-weight, high-density polyethylene (HDPE) through blow molding. It is a reusable, large plastic packaging container commonly used for storing and transporting large quantities of liquids or semi-solids. (See reference) Figure 1 As shown, to accommodate different liquids, an inner liner bag 2 must be placed inside the container during use to prevent internal corrosion. The bottom of the inner liner bag 2 is connected to a discharge pipe 21. However, when the liquid level in the inner liner bag 2 decreases, the inner liner bag 2 is prone to shrinking. Under suction, part of the inner liner bag 2 may retract into the discharge pipe 21, causing blockage. To prevent this problem, a baffle net 3 is usually added inside the discharge pipe 21. Based on the above, the applicant previously applied for a patent with authorization publication number CN205132409U.

[0003] In the market, besides heat-welding a discharge pipe with a baffle mesh onto the inner liner bag, there is also a method of heat-welding a valve cover instead of the discharge pipe onto the inner liner bag. Specifically, typically, the baffle mesh is heat-welded to the valve cover, and then a connecting film is heat-welded to the valve cover; this connecting film is used for subsequent connection of the inner liner bag. Finally, the valve cover with the connecting film and baffle mesh is heat-welded to the inner liner bag. This process requires two independent welding operations on the valve cover, which is cumbersome, increases processing time, and affects overall production efficiency. Summary of the Invention

[0004] To address the low production efficiency caused by the need for step-by-step welding of the valve cover, connecting membrane, and barrier mesh in existing processing methods, which relies on manual operation, this application provides an automatic hot-stamping and forming device and method for the inner lining bag opening of a ton container.

[0005] The technical solution provided in this application for an automatic hot-stamping and molding device and method for the inner lining bag opening of a ton container is as follows: An automatic hot-stamping molding device for the inner liner bag of a ton container includes a support frame, a lifting assembly, and a heat processing assembly. The lifting assembly is vertically mounted on the support frame. The heat processing assembly includes a support member and an electric heating coil. The lower end of the lifting assembly is detachably mounted on the support member, and the electric heating coil is mounted on the lower end of the support member. A heat processing support platform is mounted on the support frame, and the electric heating coil is located above the heat processing support platform. The heat processing assembly is used to simultaneously heat-weld a connecting film and a barrier mesh onto a valve cover, or to weld a valve cover with a connecting film and a barrier mesh onto the inner liner bag. The support frame is also equipped with a controller, which is used to control the lifting assembly.

[0006] By adopting the above technical solution, this solution achieves automated operation of hot-pressing the valve cover and inner lining bag opening through the combination of a support frame, lifting assembly, and heat processing assembly. The lifting assembly drives the heat processing assembly to move up and down, working in conjunction with the heat processing support platform to position and support the valve cover or inner lining bag, enabling the electric heating coil to accurately and stably weld the connecting film and barrier mesh onto the valve cover, or weld a valve cover with a connecting film and barrier mesh onto the inner lining bag. The controller allows for automatic control of the lifting process, improving operational accuracy and production efficiency.

[0007] Preferably, the heat treatment assembly is provided in two sets, namely heat treatment assembly one and heat treatment assembly two; heat treatment assembly one is used to simultaneously heat weld the connecting membrane and the barrier mesh onto the valve cover; heat treatment assembly two is used to weld the valve cover with the connecting membrane and the barrier mesh onto the inner liner bag.

[0008] By adopting the above technical solution, two sets of heat processing components of different specifications are set up for the simultaneous welding of the connecting membrane, the barrier mesh, and the valve cover, and the welding of the valve cover with the connecting membrane and the barrier mesh to the inner liner bag, respectively. Electric heating coils with different inner and outer diameters are used to meet the different requirements for the size of the heating area at different welding stages.

[0009] Preferably, the assembly further includes a fabric feeding component, an unperforated high-temperature resistant fabric, and a perforated high-temperature resistant fabric. The fabric feeding component includes a rotary cylinder, a connecting arm, a telescopic cylinder, and a suction block. The rotary cylinder is vertically mounted on a support frame and located on one side of the heat processing support platform. The connecting arm is mounted on the rotary cylinder's rotating shaft, and the telescopic cylinder is vertically mounted on the connecting arm. The suction block is located at the lower end of the telescopic cylinder. An air pump is mounted on the support frame, and the suction block is connected to the air pump via an air pipe. The suction block, in conjunction with the air pump, is used to suction the unperforated high-temperature resistant fabric. The fabric feeding component is used to place the unperforated high-temperature resistant fabric between the connecting membrane and the electric heating coil in the first heat processing component. The suction block, in conjunction with the air pump, is used to blow air to cool the unperforated high-temperature resistant fabric. The controller is also used to control the fabric feeding component and the air pump. The perforated high-temperature resistant fabric is placed between the connecting membrane and the electric heating coil in the second heat processing component.

[0010] By adopting the above technical solution, the added fabric placement component can automatically lay the unperforated high-temperature resistant fabric between the connecting membrane and the electric heating coil, and automatically remove it after welding. A rotary cylinder drives the connecting arm to rotate, and a telescopic cylinder drives the suction block to rise and fall, achieving automatic placement and removal of the unperforated high-temperature resistant fabric. The air pump, working in conjunction with the suction block, can generate negative pressure to suck up the unperforated high-temperature resistant fabric, and can also switch to blowing positive pressure airflow to force cooling the fabric, effectively preventing the high-temperature connecting membrane from sticking to the unperforated high-temperature resistant fabric, ensuring product quality and smooth continuous production.

[0011] Preferably, a portion of the detection component is provided on the support frame, and another portion of the detection component is provided on the connecting arm. The detection component is used to detect whether the suction block with unperforated high-temperature resistant cloth is located directly above the valve cover.

[0012] By adopting the above technical solution, this solution, through detection components installed on the support frame and connecting arm, can detect in real time whether the suction block containing the unperforated high-temperature resistant cloth has accurately moved to directly above the valve cover. This detection ensures that the unperforated high-temperature resistant cloth can be accurately laid in the predetermined position, improving the reliability and accuracy of the automated process.

[0013] Preferably, the detection component includes an infrared transmitter and an infrared receiver. The infrared transmitter is vertically mounted on the support frame, and the infrared receiver is vertically mounted on the connecting arm, with the infrared receiver located above the infrared transmitter.

[0014] By adopting the above technical solution, an infrared transmitter and an infrared receiver are used to form the detection component. When the connecting arm rotates to bring the suction block to the correct position above the valve cover, the infrared receiver receives a signal from the infrared transmitter, thus sending a positioning signal back to the controller. This non-contact detection method can reliably and stably complete the position calibration function.

[0015] Preferably, the suction block has a connecting cavity, and the lower end of the suction block has a vertical connecting hole. The connecting cavity communicates with the connecting hole. One end of the air tube is set on the suction block, and the end of the air tube extends into the connecting cavity. The other end of the air tube is set on the air pump.

[0016] By adopting the above technical solution, the suction block has a connecting cavity inside that communicates with multiple connecting holes at the lower end. This allows the air pump to apply negative or positive pressure evenly to the entire lower surface of the suction block through a single air pipe interface. This design ensures that the force distribution is uniform when the suction block adsorbs or blows air onto the unperforated high-temperature resistant cloth, enabling the cloth to be smoothly absorbed or uniformly cooled, resulting in more stable and reliable operation.

[0017] Preferably, two air tubes are provided, namely air tube one and air tube two, and two air pumps are provided, namely air pump one and air pump two; one end of air tube one is attached to the suction block, and the end of air tube one extends into the connecting cavity, and the other end of air tube one is attached to air pump one, which is a positive pressure air pump; air tube two is located on one side of air tube one, one end of air tube two is attached to the suction block, and the end of air tube two extends into the connecting cavity, and the other end of air tube two is attached to air pump two, which is a negative pressure air pump.

[0018] By adopting the above technical solution, this solution achieves rapid and independent switching between the suction block's function of absorbing unperforated high-temperature resistant cloth and its function of blowing air for cooling, through the setting of two independent air pipes connected to a positive pressure air pump and a negative pressure air pump respectively. The positive pressure air pump is responsible for blowing air for cooling, while the negative pressure air pump is responsible for adsorption and placement.

[0019] Preferably, the lifting assembly includes a lifting cylinder and a lifting mounting plate. The lifting cylinder is vertically mounted on the support frame, with the end of the piston rod of the lifting cylinder facing downwards. The upper end of the lifting mounting plate is fixedly connected to the end of the piston rod of the lifting cylinder. The support member is vertically mounted on the lifting mounting plate.

[0020] By adopting the above technical solution, the lifting cylinder is vertically positioned and drives the lifting mounting plate to move up and down via the piston rod, providing stable and controllable linear lifting power for the hot processing components. This driving method has a compact structure and precise control, ensuring that the electric heating coil contacts the workpiece at the set pressure and speed, thereby achieving a stable and consistent welding effect.

[0021] Preferably, the support component includes a support rod, a spring, an upper limit nut, and a lower limit nut. The support rod is vertically slidably mounted on the lifting mounting plate. Both the upper and lower ends of the support rod are provided with external threads. The upper end of the support rod passes through the top wall of the lifting mounting plate. The lower limit nut is threadedly connected to the lower end of the support rod. The spring is sleeved on the support rod. The upper limit nut is threadedly connected to the upper end of the support rod. The lower end of the spring abuts against the lower limit nut, and the upper end of the spring abuts against the bottom wall of the lifting mounting plate.

[0022] By adopting the above technical solution, the support rod is floatingly connected to the lifting mounting plate via springs, an upper limit nut, and a lower limit nut. When the electric heating coil presses down to contact the workpiece, the spring can buffer the pressure and provide constant elastic pressure, allowing the electric heating coil to adaptively conform to the workpiece surface. This ensures the uniformity of heating pressure and improves the stability of welding quality.

[0023] A forming method for automatically sealing the opening of a ton container liner bag using the automatic hot-pressing molding equipment described in the claims, comprising the following steps: Step 1: Position the valve cover on the heat treatment support platform, with the valve cover directly below the electric heating coil of heat treatment component one. Place the blocking mesh and connecting membrane on the valve cover in sequence, and start the cloth feeding component to place the unperforated high-temperature resistant cloth on the connecting membrane. Step 2: Activate the lifting assembly, which drives the heat treatment assembly to move downwards, simultaneously heat-welding the barrier mesh and connecting membrane onto the valve cover; Step 3: After simultaneously heat-welding the barrier mesh and connecting membrane onto the valve cover, start the fabric feeding assembly. The fabric feeding assembly first cools down the unperforated high-temperature resistant fabric, and then removes the unperforated high-temperature resistant fabric from the connecting membrane. Then, remove the valve cover with the welded barrier mesh and connecting membrane from the heat-processing support platform. Step 4: Remove the first heat treatment component from the lifting assembly and install the second heat treatment component on the lifting assembly. Place the inner liner bag on the heat treatment support platform and then place the valve cover with the welded baffle and connecting membrane on the inner liner bag, with the connecting membrane in contact with the surface of the inner liner bag. Step 5: Manually slide the perforated high-temperature resistant cloth from above the valve cover downwards until the perforated high-temperature resistant cloth contacts the connecting membrane. Activate the lifting assembly, which will drive the heat treatment assembly two downwards to heat-weld the valve cover with the blocking mesh and connecting membrane that were heat-treated in Step 2 onto the inner liner bag.

[0024] By adopting the above technical solution, this method integrates multiple steps, such as placing the unperforated high-temperature resistant fabric, simultaneously heat-welding the connecting membrane and the barrier mesh, removing the unperforated high-temperature resistant fabric after welding and cooling, and changing tools to weld the inner liner bag, into a continuous process. This reduces manual intervention, simplifies the operation steps, and improves the overall production efficiency of the ton container inner liner bag opening assembly.

[0025] In summary, this application includes the following beneficial technical effects: 1. By using a lifting cylinder to drive the heat processing component equipped with an electric heating coil to press down in one go, the connecting membrane and the blocking mesh are simultaneously welded to the valve cover, merging the original two-step process into one step, significantly shortening the processing time.

[0026] 2. The fabric feeding assembly uses a rotary cylinder and a telescopic cylinder to drive the suction block, enabling automatic loading and unloading of the high-temperature resistant fabric without perforations. Combined with positive and negative pressure air pumps, the high-temperature resistant fabric without perforations is cooled and removed after welding, effectively preventing adhesion and ensuring continuous production.

[0027] 3. The spring structure in the support component allows the electric heating coil to adapt to the workpiece surface, providing uniform pressure and improving the consistency of welding quality. The detection assembly consisting of an infrared transmitter and receiver ensures the accuracy of the placement position. Attached Figure Description

[0028] Figure 1 This is a structural diagram used in related technologies to illustrate the inner liner bag, discharge pipe, and barrier net.

[0029] Figure 2 This is a schematic diagram of the overall structure used in the embodiments of this application to illustrate the simultaneous welding of the barrier mesh and the connecting membrane onto the valve cover.

[0030] Figure 3 This is a schematic diagram of the overall structure used in the embodiments of this application to illustrate welding the valve cover to the inner liner bag.

[0031] Figure 4 This is a schematic diagram illustrating a partially enlarged structure in an embodiment of this application.

[0032] Figure 5 This is a schematic diagram illustrating the structure of the thermal processing support platform in the embodiments of this application.

[0033] Figure 6 This is a structural schematic diagram illustrating the lifting assembly and infrared transmitter in the embodiments of this application.

[0034] Figure 7 This is a structural schematic diagram illustrating the lifting assembly and the heat processing assembly in the embodiments of this application.

[0035] Figure 8 This is a schematic diagram illustrating the structure of the heat treatment component in the embodiments of this application.

[0036] Figure 9 This is a schematic diagram illustrating the structure of the suction block in the embodiments of this application.

[0037] Figure 10 This is a schematic diagram illustrating the structure of the valve cover, the barrier mesh, and the connecting membrane in the embodiments of this application.

[0038] Explanation of reference numerals in the attached drawings: 1. Valve cover; 11. First connecting part; 12. Second connecting part; 121. Discharge hole; 2. Inner liner bag; 21. Discharge pipe; 3. Baffle net; 4. Connecting membrane; 5. Support frame; 51. Slide rail; 52. Heat treatment support platform; 521. Sliding support block; 5211. Locking screw; 522. Positioning hole; 523. Support plate; 524. Positioning ring; 525. Groove; 53. Controller; 6. Lifting assembly; 61. Lifting cylinder; 62. Lifting mounting plate; 621. Mounting groove; 7. Heat treatment assembly; 71. Support component; 72. 1. Support rod; 712. Spring; 713. Upper limit nut; 714. Lower limit nut; 715. First washer; 716. Second washer; 72. Electric heating coil; 8. Fabric feeding assembly; 81. Rotary cylinder; 82. Connecting arm; 83. Telescopic cylinder; 84. Suction block; 841. Connecting cavity; 842. Connecting hole; 843. Air pipe; 8431. Air pipe one; 8432. Air pipe two; 9. High-temperature resistant fabric; 91. Unperforated high-temperature resistant fabric; 92. Perforated high-temperature resistant fabric; 10. Detection assembly; 101. Infrared transmitter; 102. Infrared receiver. Detailed Implementation

[0039] The following is in conjunction with the appendix Figures 2-10 This application will be described in further detail.

[0040] This application discloses an automatic hot-stamping and shaping device and method for the opening of a ton container liner bag, referring to... Figures 2-3 The system includes a support frame 5, a lifting assembly 6, a heat treatment assembly 7, a fabric placement assembly 8, and a high-temperature resistant fabric 9. The lifting assembly 6 is mounted on the support frame 5, and the heat treatment assembly 7 is mounted at the lower end of the lifting assembly 6. The lifting assembly 6 is used to drive the heat treatment assembly 7 to rise and fall. The fabric placement assembly 8 is mounted on the support frame 5. In this embodiment, two pieces of high-temperature resistant fabric 9 are provided: one is an unperforated high-temperature resistant fabric 91, and the other is a perforated high-temperature resistant fabric 92. The fabric placement assembly 8 is located on one side of the heat treatment assembly 7, and the unperforated high-temperature resistant fabric 91 is adsorbed onto the fabric placement assembly 8. The fabric placement assembly 8 is used to place the unperforated high-temperature resistant fabric 91 between the connecting membrane 4 and the electric heating coil 72, and the high-temperature resistant fabric 9 is used to prevent the connecting membrane 4 from adhering to the electric heating coil 72. A controller 53 is also fixedly connected to the support frame 5. The controller 53 is used to control the lifting assembly 6 and the fabric placement assembly 8. The controller 53 is prior art and will not be described in detail here. Reference Figure 2 , Figure 4 and Figure 5A heat processing support platform 52 is slidably connected to the support frame 5. Specifically, a slide rail 51 is provided on the support frame 5, and a sliding support block 521 is fixedly connected to the lower end of the heat processing support platform 52. The heat processing support platform 52 is slidably connected to the slide rail 51 through the sliding support block 521. A locking screw 5211 is threadedly connected to the sliding support block 521. The axis of the locking screw 5211 is perpendicular to the long axis of the slide rail 51. The locking screw 5211 is used to lock the sliding support block 521 onto the slide rail 51. When it is necessary to adjust the working position of the heat processing support platform 52, the heat processing support platform 52 can slide along the slide rail 51. After moving to the desired position, by tightening the locking screw 5211, the clamping force generated by the locking screw 5211 perpendicular to the slide rail 51 can be used to lock the sliding support block 521 onto the slide rail 51, thereby completing the positioning and fixing of the heat processing support platform 52. A positioning hole 522 is vertically provided on the hot working support platform 52. A positioning ring 524 is also fixedly connected to the hot working support platform 52. The positioning ring 524 is located directly below the positioning hole 522. In this embodiment, the positioning ring 524 is a square ring. The inner circle width of the positioning ring 524 is smaller than the diameter of the positioning hole 522. The positioning ring 524 is used to support the valve cover 1.

[0041] Reference Figure 2 , Figure 3 and Figure 6 The lifting assembly 6 is located above the heat processing support platform 52. The lifting assembly 6 includes a lifting cylinder 61 and a lifting mounting plate 62. The lifting cylinder 61 is vertically fixed to the support frame 5, with the end of the piston rod of the lifting cylinder 61 facing downwards. The lifting mounting plate 62 is horizontally fixed to the end of the piston rod of the lifting cylinder 61. In this embodiment, the heat processing assembly 7 is located above the heat processing support platform 52. The heat processing assembly 7 includes a support member 71 and an electric heating coil 72. Two sets of heat processing assemblies 7 are provided. The difference between the two sets of heat processing assemblies 7 is that the outer and inner diameters of the electric heating coil 72 in one set of heat processing assemblies 7 are smaller. This set of heat processing assemblies 7 is used to heat-weld the connecting membrane 4 and the blocking mesh 3 onto the valve cover 1. This set of heat processing assemblies 7 is designated as heat processing assembly one. Another set of heat processing components 7 has an electric heating coil 72 with a larger outer and inner diameter. This set of heat processing components 7 is used to weld the valve cover 1, which has a connecting membrane 4 and a barrier mesh 3 welded together, onto the inner liner bag 2. This set of heat processing components 7 is referred to as heat processing component two. The electric heating coil 72 is prior art and will not be described in detail here.

[0042] Reference Figures 7-8In this embodiment, the lifting mounting plate 62 is a rectangular plate with four vertically formed mounting grooves 621. These grooves are arranged circumferentially along the axis of the piston rod of the lifting cylinder 61. Each groove is oblong, with its length perpendicular to the axis of the piston rod. Support members 71 are mounted on the lifting mounting plate 62. Four sets of support members 71 are arranged circumferentially along the axis of the piston rod of the lifting cylinder 61, and each set slides into one mounting groove 621. An electric heating coil 72 is vertically positioned, its upper end fixedly connected to the lower ends of the four sets of support members 71, and its axis coincides with the axis of the piston rod of the lifting cylinder 61.

[0043] Reference Figures 7-8 This embodiment uses one set of support members 71 and one mounting groove 621 as an example for illustration. The support member 71 includes a support rod 711, a spring 712, an upper limit nut 713, a lower limit nut 714, a first washer 715, and a second washer 716. The support rod 711 is vertically arranged, and its upper end passes through the mounting groove 621. The first washer 715 is sleeved on the support rod 711 and is located above the top wall of the lifting mounting plate 62. The diameter of the first washer 715 is larger than the width of the mounting groove 621. The upper end of the support rod 711 is also provided with an external thread. The upper limit nut 713 is threadedly connected to the upper end of the support rod 711 and is located above the first washer 715. The second washer 716 is fitted onto the support rod 711, located below the bottom wall of the lifting mounting plate 62. The spring 712 is fitted onto the support rod 711, located below the second washer 716. The lower end of the support rod 711 also has external threads. The lower limit nut 714 is threaded onto the lower end of the support rod 711, located below the spring 712. The upper end of the spring 712 pushes the second washer 716 against the bottom wall of the lifting mounting plate 62, and the lower end of the spring 712 pushes against the lower limit nut 714. The lower end of the support rod 711 is fixedly connected to the upper end of the electric heating coil 72.

[0044] Reference Figure 2 and Figure 9The fabric placement assembly 8 includes a rotary cylinder 81, a connecting arm 82, a telescopic cylinder 83, and a suction block 84. The rotary cylinder 81 is vertically mounted on the support frame 5, with the end of its rotating shaft facing upwards. The rotary cylinder 81 is located on one side of the heat processing support platform 52. The connecting arm 82 is inverted L-shaped, with the lower end of its vertical section fixedly connected to the end of the rotating shaft of the rotary cylinder 81. The telescopic cylinder 83 is vertically fixedly connected to the end of the horizontal section of the connecting arm 82, with the end of its piston rod facing downwards. The suction block 84 is fixedly connected to the end of the piston rod of the telescopic cylinder 83. An air pump (not shown in the figure) is provided on one side of the connecting arm 82, and the air pump is connected to the suction block 84 through an air pipe 843. In this embodiment, two air pumps are provided, both of which are fixedly connected to the support frame 5. The two air pumps are designated as air pump one and air pump two. In this embodiment, air pump one is a positive pressure air pump, and air pump two is a negative pressure air pump. Two air tubes 843 are provided, namely air tube one 8431 and air tube two 8432. A connecting cavity 841 is formed inside the suction block 84; in this embodiment, the connecting cavity 841 is an annular cavity. Multiple connecting holes 842 are formed circumferentially along the lower part of the suction block 84 along its own axis, each connecting hole 842 communicating with the connecting cavity 841. One end of air tube one 8431 is fixedly connected to the suction block 84, and the end of air tube one 8431 extends into the connecting cavity 841; the other end of air tube one 8431 is fixedly connected to air pump one. Air tube two 8432 is located on one side of air tube one 8431; one end of air tube two 8432 is fixedly connected to the suction block 84, and the end of air tube two 8432 extends into the connecting cavity 841; the other end of air tube two 8432 is fixedly connected to air pump two.

[0045] Reference Figure 2 and Figure 9 During operation, after the second air pump starts, it draws air from the connecting cavity 841 of the suction block 84 through the second air pipe 8432, creating a negative pressure in the connecting cavity 841. This negative pressure acts on each connecting hole 842 on the lower surface of the suction block 84, thereby generating the adsorption force required to adsorb the unperforated high-temperature resistant cloth 91 onto the lower surface of the suction block 84, thus achieving stable adsorption of the unperforated high-temperature resistant cloth 91.

[0046] Reference Figure 10The valve cover 1 is fixedly composed of a first connecting part 11 and a second connecting part 12. The main bodies of the first connecting part 11 and the second connecting part 12 are cylindrical. The diameter of the first connecting part 11 is smaller than the diameter of the second connecting part 12. The axis of the first connecting part 11 is parallel to the axis of the second connecting part 12. The first connecting part 11 is offset on the second connecting part 12, that is, the axis of the first connecting part 11 is located on one side of the axis of the second connecting part 12. A discharge hole 121 is provided on the second connecting part 12. The discharge hole 121 is circular, and its axis coincides with the axis of the first connecting part 11. The valve cover 1 is prior art and will not be described in detail here.

[0047] Reference Figure 2 In this embodiment, signal receivers are fixedly connected to the lifting cylinder 61, the rotating cylinder 81, the telescopic cylinder 83, and air pump one and air pump two, and each signal receiver is communicatively connected to the controller 53. When air pump one is working, air pump two stops working, and when air pump two is working, air pump one stops working.

[0048] Reference Figure 2 and Figure 10 When it is necessary to heat-weld the connecting membrane 4 and the blocking mesh 3 to one end of the valve cover 1, the valve cover 1 is first set vertically with the end of the first connecting part 11 of the valve cover 1 facing downwards. Then, the first connecting part 11 of the valve cover 1 is passed through the positioning hole 522 on the heat-working support platform 52, so that the lower end of the second connecting part 12 of the valve cover 1 abuts against the upper end of the positioning ring 524, thereby completing the positioning and support of the valve cover 1. Then, the blocking mesh 3 is placed on the upper end of the second connecting part 12 of the valve cover 1, and then the connecting membrane 4 is placed on the blocking mesh 3. Then, the cloth feeding assembly 8 is started. At this time, the unperforated high-temperature resistant cloth 91 has been pre-absorbed on the lower surface of the suction block 84. The rotary cylinder 81 of the cloth feeding assembly 8 drives the connecting arm 82 to rotate, thereby moving the suction block 84, which carries the unperforated high-temperature resistant cloth 91, to directly above the valve cover 1. Subsequently, the telescopic cylinder 83 drives the suction block 84 to descend until the unperforated high-temperature resistant cloth 91 is placed and covers the surface of the connecting membrane 4 at the upper end of the valve cover 1. Then, the air pump 2 stops working, causing the suction block 84 to release its adsorption of the unperforated high-temperature resistant cloth 91, thereby placing the unperforated high-temperature resistant cloth 91 on the surface of the connecting membrane 4. Then, the cloth placement assembly 8 resets.

[0049] Reference Figure 2 , Figure 7 and Figure 8Subsequently, the controller 53 sends a start signal to the lifting assembly 6. Upon receiving the signal, the lifting cylinder 61 of the lifting assembly 6 extends its piston rod downward, driving the lifting mounting plate 62, which is fixedly connected to the end of the piston rod, to move downward. The lifting mounting plate 62 causes the heat processing assembly 1, which is mounted on the lifting mounting plate 62, to descend as a whole. The heat processing assembly 1 includes four sets of circumferentially arranged support members 71 and an electric heating coil 72 fixedly connected to the lower end of the support members 71. The support rod 711 of the support member 71 passes through the mounting groove 621 on the lifting mounting plate 62 and is floatingly connected by a spring 712, a washer, and a limit nut, so that the electric heating coil 72 can adaptively fit during the downward pressing process. During the descent, the electric heating coil 72 contacts and presses against the unperforated high-temperature resistant cloth 91, thereby applying uniform heating and pressure to the connecting membrane 4 and the blocking mesh 3 below, thereby achieving synchronous heat processing welding of the connecting membrane 4 and the blocking mesh 3 to the upper end of the valve cover 1. After the heat treatment welding is completed, the controller 53 controls the piston rod of the lifting cylinder 61 to retract upwards, driving the lifting mounting plate 62 and the heat treatment assembly to rise as a whole until they return to their initial position. Then, the cloth-laying assembly 8 actuates again, the rotary cylinder 81 drives the connecting arm 82 to rotate, causing the suction block 84 to deflect directly above the unperforated high-temperature resistant cloth 91 on the valve cover 1. (Refer to...) Figure 2 and Figure 9 At this point, the air pump starts, blowing gas into the connecting cavity 841 of the suction block 84 through the air pipe 8431. The airflow acts on the unperforated high-temperature resistant cloth 91 through the connecting hole 842 on the lower surface of the suction block 84, thereby achieving forced cooling of the unperforated high-temperature resistant cloth 91 and preventing it from sticking to the connecting membrane 4 due to welding residual heat. After the air pump 1 completes the air blowing and cooling and stops working, the second air pump immediately starts, drawing air out of the connecting cavity 841 of the suction block 84 through the second air pipe 8432, creating a negative pressure in the connecting cavity 841 again, thereby firmly sucking up and fixing the cooled unperforated high-temperature resistant cloth 91 to the lower surface of the suction block 84. Finally, the cloth release assembly 8 is activated, and the rotating cylinder 81 drives the suction block 84, along with the unperforated high-temperature resistant cloth 91, to move away from the valve cover 1, thus completing one working cycle.

[0050] Reference Figure 2 and Figure 6A portion of the detection component 10 is mounted on the support frame 5, and the other portion is mounted on the connecting arm 82. The detection component 10 is used to detect whether the suction block 84, which has absorbed the high-temperature resistant cloth 9, is located directly above the valve cover 1. Specifically, the detection component 10 includes an infrared transmitter 101 and an infrared receiver 102, which are communicatively connected to the controller 53. The infrared transmitter 101 is vertically mounted on the support frame 5, and the infrared receiver 102 is vertically mounted on the connecting arm 82, positioned above the infrared transmitter 101. When the suction block 84 is directly above the valve cover 1, the infrared receiver 102 is directly above the infrared transmitter 101.

[0051] Reference Figure 2 and Figure 6 The detection component 10 emits an infrared signal upwards via an infrared transmitter 101. An infrared receiver 102 is mounted on the connecting arm 82 and moves with the rotation of the connecting arm 82. When the fabric feeding component 8 drives the suction block 84 to move directly above the valve cover 1, the infrared receiver 102 on the connecting arm 82 simultaneously moves directly above the infrared transmitter 101 on the support frame 5. At this time, the infrared receiver 102 can receive the infrared signal emitted by the infrared transmitter 101 and generate a detection signal. This detection signal is sent to the controller 53, which determines based on the signal that the suction block 84 is accurately positioned directly above the valve cover 1. If the infrared receiver 102 does not receive an infrared signal, it indicates that the suction block 84 is not aligned, and the controller 53 can control the fabric feeding component 8 to adjust until an alignment signal is detected.

[0052] Reference Figure 5 , Figure 7 and Figure 8The hot working support platform 52 also has a circular groove 525, which is coaxially arranged with the positioning hole 522. The hot working support platform 52 is equipped with a support plate 523, which is circular. The diameter of the support plate 523 corresponds to the inner diameter of the groove 525, and the thickness of the support plate 523 matches the recess depth of the groove 525. When it is necessary to further weld the valve cover 1, which has been welded with the connecting membrane 4 and the blocking mesh 3, to the inner liner bag 2, the support plate 523 is first placed into the groove 525, so that the upper surface of the support plate 523 is flush with the upper surface of the hot working support platform 52. Subsequently, the first heat treatment component, originally installed on the lifting mounting plate 62, is removed and replaced with the second heat treatment component. Specifically, when removing the first heat treatment component, simply loosen and remove the upper limit nut 713 and the first washer 715 from each set of support members 71. This allows the support rod 711 to be moved downwards from the mounting slot 621 of the lifting mounting plate 62, thereby removing the first heat treatment component. Next, the second heat treatment component, which has a larger electric heating coil 72, is used. The upper ends of the support rods 711 of each support member 71 are passed through the corresponding mounting slots 621. The first washer 715 is reinstalled and the upper limit nut 713 is tightened, thus completing the replacement. (Refer to...) Figure 3 After replacement, the inner liner bag 2 is laid flat on the upper surface of the heat processing support platform 52, and the valve cover 1 is placed on the inner liner bag 2, with the first connecting part 11 of the valve cover 1 facing upwards, so that the welded connecting film 4 on the valve cover 1 is in contact with the inner liner bag 2. Next, the perforated high-temperature resistant cloth 92 is manually taken and slipped down from the upper end of the first connecting part 11 of the valve cover 1 until the perforated high-temperature resistant cloth 92 is attached to the surface of the connecting film 4. Finally, the lifting component 6 is activated, which moves the heat processing component two downwards. The electric heating coil 72 of the heat processing component two heats and pressurizes the perforated high-temperature resistant cloth 92 and the connecting film 4 below it and the inner liner bag 2, realizing the heat processing welding between the connecting film 4 and the inner liner bag 2.

[0053] The implementation principle of the automatic heat-sealing and forming equipment and method for the inner lining bag of a ton container in this application embodiment is as follows: When the equipment is working, the valve cover 1 is first positioned on the heat processing support platform 52. Under the control of the controller 53, the cloth-laying component 8 automatically lays the unperforated high-temperature resistant cloth 91 on the surface of the connecting membrane 4 to be welded on the valve cover 1. Subsequently, the lifting component 6 drives the first heat processing component to descend, and the electric heating coil 72, through the floating pressure provided by the support component 71, simultaneously welds the connecting membrane 4 and the blocking net 3 to the end of the valve cover 1 in one heat processing action, realizing the synchronous welding of the two. After welding is completed, the cloth-laying component 8 operates again, and the suction block 84, under the alternating operation of the positive pressure air pump and the negative pressure air pump, first blows air to cool the unperforated high-temperature resistant cloth 91, and then absorbs and removes it, completing an automated cycle. When welding of the valve cover 1 and the inner lining bag 2 is required, the operator can replace the first heat processing component with the second heat processing component and place the support plate 523 in the circular groove 525. Place the inner liner bag 2 on the platform, put the valve cover 1 on the inner liner bag 2, and manually put on the perforated high-temperature resistant cloth 92. Then the welding can be performed by the heat treatment component 2.

[0054] This application achieves full automation of the entire process—from laying the unperforated high-temperature resistant fabric 91, to simultaneously heat-welding the connecting membrane 4 and the barrier net 3, to cooling and removing the unperforated high-temperature resistant fabric 91 after welding—through the coordinated action of the lifting component 6, the heat treatment component 1, the fabric laying component 8, and the controller 53. Compared to the cumbersome process in the prior art that requires two independent welding operations, this equipment effectively simplifies the production steps, reduces the time consumed in intermediate links, and helps improve overall production efficiency.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic hot-pressing and molding equipment for the inner lining bag opening of a ton container, characterized in that: It includes a support frame (5), a lifting assembly (6) and a heat processing assembly (7). The lifting assembly (6) is vertically mounted on the support frame (5). The heat processing assembly (7) includes a support member (71) and an electric heating coil (72). The support member (71) is detachably mounted on the lower end of the lifting assembly (6), and the electric heating coil (72) is mounted on the lower end of the support member (71). A heat processing support platform (52) is provided on the support frame (5), and the electric heating coil (72) is located above the heat processing support platform (52); The heat treatment assembly (7) is used to simultaneously heat weld the connecting membrane (4) and the barrier mesh (3) onto the valve cover (1), or to weld the valve cover (1) with the connecting membrane (4) and the barrier mesh (3) onto the inner liner bag (2). The support frame (5) is also equipped with a controller (53), which is used to control the lifting assembly (6).

2. The automatic hot-pressing and molding equipment for the inner lining bag mouth of a ton container according to claim 1, characterized in that: The heat processing component (7) is provided in two sets, namely heat processing component one and heat processing component two; The first heat treatment component is used to simultaneously heat weld the connecting membrane (4) and the barrier mesh (3) onto the valve cover (1); the second heat treatment component is used to weld the valve cover (1) with the connecting membrane (4) and the barrier mesh (3) onto the inner liner bag (2).

3. The automatic hot-pressing and molding equipment for the inner lining bag opening of a ton container according to claim 2, characterized in that: It also includes a fabric feeding assembly (8), an unperforated high-temperature resistant fabric (91), and a perforated high-temperature resistant fabric (92). The fabric feeding assembly (8) includes a rotary cylinder (81), a connecting arm (82), a telescopic cylinder (83), and a suction block (84). The rotary cylinder (81) is vertically mounted on the support frame (5) and is located on one side of the heat processing support platform (52). The connecting arm (82) is mounted on the rotating shaft of the rotary cylinder (81). The telescopic cylinder (83) is vertically mounted on the connecting arm (82). The suction block (84) is mounted at the lower end of the telescopic cylinder (83). An air pump is mounted on the support frame (5), and the suction block (84) is connected to the air pump through an air pipe (843). The suction block (84) is used in conjunction with an air pump to suction the unperforated high-temperature resistant cloth (91); The fabric feeding assembly (8) is used to place the unperforated high-temperature resistant fabric (91) between the connecting membrane (4) and the electric heating coil (72) in the heat processing assembly. The suction block (84) is used in conjunction with an air pump to blow air to cool the unperforated high-temperature resistant cloth (91); The controller (53) is also used to control the fabric feeding assembly (8) and the air pump; The perforated high-temperature resistant cloth (92) is placed between the connecting membrane (4) and the electric heating coil (72) in the heat processing component 2.

4. The automatic hot-pressing and molding equipment for the inner lining bag mouth of a ton container according to claim 3, characterized in that: A part of the detection component (10) is provided on the support frame (5), and another part of the detection component (10) is provided on the connecting arm (82). The detection component (10) is used to detect whether the suction block (84) with the unopened high-temperature resistant cloth (91) is located directly above the valve cover (1).

5. The automatic hot-pressing and molding equipment for the inner lining bag mouth of a ton container according to claim 4, characterized in that: The detection component (10) includes an infrared transmitter (101) and an infrared receiver (102). The infrared transmitter (101) is vertically mounted on the support frame (5), and the infrared receiver (102) is vertically mounted on the connecting arm (82). The infrared receiver (102) is located above the infrared transmitter (101).

6. The automatic hot-pressing and molding equipment for the inner lining bag mouth of a ton container according to claim 3, characterized in that: The suction block (84) has a connecting cavity (841) inside, and a connecting hole (842) is vertically opened at the lower end of the suction block (84). The connecting cavity (841) communicates with the connecting hole (842). One end of the air tube (843) is set on the suction block (84), and the end of the air tube (843) extends into the connecting cavity (841). The other end of the air pipe (843) is mounted on the air pump.

7. The automatic hot-pressing and molding equipment for the inner lining bag mouth of a ton container according to claim 6, characterized in that: Two air tubes (843) are provided, namely air tube one (8431) and air tube two (8432), and two air pumps are provided, namely air pump one and air pump two. One end of the first air tube (8431) is set on the suction block (84), and the end of the first air tube (8431) extends into the connecting cavity (841). The other end of the first air tube (8431) is set on the first air pump, which is a positive pressure air pump. The second air tube (8432) is located on one side of the first air tube (8431). One end of the second air tube (8432) is located on the suction block (84), and the end of the second air tube (8432) extends into the connecting cavity (841). The other end of the second air tube (8432) is located on the second air pump, which is a negative pressure air pump.

8. The automatic hot-pressing and molding equipment for the inner lining bag mouth of a ton container according to claim 1, characterized in that: The lifting assembly (6) includes a lifting cylinder (61) and a lifting mounting plate (62). The lifting cylinder (61) is vertically mounted on the support frame (5). The end of the piston rod of the lifting cylinder (61) faces downward. The upper end of the lifting mounting plate (62) is fixedly connected to the end of the piston rod of the lifting cylinder (61). The support member (71) is vertically mounted on the lifting mounting plate (62).

9. The automatic hot-pressing and molding equipment for the inner lining bag mouth of a ton container according to claim 8, characterized in that: The support member (71) includes a support rod (711), a spring (712), an upper limit nut (713) and a lower limit nut (714). The support rod (711) is vertically slidably mounted on the lifting mounting plate (62). The upper and lower ends of the support rod (711) are both provided with external threads. The upper end of the support rod (711) passes through the top wall of the lifting mounting plate (62). The lower limit nut (714) is threaded to the lower end of the support rod (711), the spring (712) is sleeved on the support rod (711), the upper limit nut (713) is threaded to the upper end of the support rod (711), the lower end of the spring (712) abuts against the lower limit nut (714), and the upper end of the spring (712) abuts against the bottom wall of the lifting mounting plate (62).

10. A forming method for automatically sealing the opening of a ton container liner bag using the automatic hot-pressing molding equipment described in claim 7, characterized in that, Includes the following steps: Step 1: Position the valve cover (1) on the heat processing support platform (52), and position the valve cover (1) directly below the electric heating coil (72) of the heat processing component (7). Place the blocking net (3) and the connecting membrane (4) on the valve cover (1) in sequence. Start the cloth feeding component (8) and place the unperforated high-temperature resistant cloth (91) on the connecting membrane (4) through the cloth feeding component (8). Step 2: Start the lifting assembly (6), and drive the heat processing assembly (7) to move downwards, so that the blocking net (3) and the connecting membrane (4) are simultaneously heat-processed and welded onto the valve cover (1); Step 3: After simultaneously heat-welding the barrier mesh (3) and the connecting membrane (4) onto the valve cover (1), start the cloth feeding assembly (8). The cloth feeding assembly (8) first cools down the unperforated high-temperature resistant cloth (91), and then removes the unperforated high-temperature resistant cloth (91) from the connecting membrane (4) through the cloth feeding assembly (8). Then remove the valve cover (1) with the barrier mesh (3) and the connecting membrane (4) welded on from the heat-processing support platform (52). Step 4: Remove the first heat processing component (7) set on the lifting assembly (6), and install the second heat processing component (7) on the lifting assembly (6). Set the inner liner bag (2) on the heat processing support platform (52), and then set the valve cover (1) with the welded barrier net (3) and connecting membrane (4) on the inner liner bag (2), with the connecting membrane (4) in contact with the surface of the inner liner bag (2). Step 5: Manually slip the perforated high-temperature resistant cloth (92) over the valve cover (1) from above until the perforated high-temperature resistant cloth (92) contacts the connecting membrane (4). Start the lifting assembly (6) and drive the heat processing assembly (7) to move downwards. Heat process the valve cover (1) with the blocking mesh (3) and connecting membrane (4) that were heat-welded in Step 2 onto the inner liner bag (2).

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