A simultaneous cheese and liquid filling equipment

Abstract

This invention relates to the field of filling equipment technology, specifically to a simultaneous cheese and liquid filling equipment, comprising a filling equipment body, a conveyor table, and a sealing device. Its key feature is that the conveyor table is equipped with multiple carrier frames for moving plastic-sealed bags. Multiple extrusion rods are installed on both sides of the plastic-sealed bags within the carrier frames. Installation chambers are located on both sides of the carrier frames on the conveyor table, and two fixed suction cups are movably installed on opposite sides of each of the two installation chambers. In use, this simultaneous cheese and liquid filling equipment, through the coordinated design of the carrier frames, extrusion rods, and clamping unit, automatically clamps the plastic-sealed bags after filling by a lifting and unfolding component, and directly feeds them into the sealing device along with the conveyor belt. This eliminates the need for manual bag removal and transfer, reduces contamination in the sealing area and bag wrinkles caused by manual intervention, and enables seamless connection between filling and sealing operations, improving the overall line efficiency and the reliability of the sealing quality.

Description

Technical Field

[0001] This invention relates to the field of filling equipment technology, specifically to a simultaneous filling equipment for cheese and liquids. Background Technology

[0002] In traditional step-by-step packaging processes, the packaging of cheese and liquid materials typically employs a sequential filling and multiple sealing method: first, the liquid is quantitatively filled and temporarily sealed, then the semi-finished product is transferred to another station for secondary filling and final sealing of the cheese. While this process can accommodate the significant differences in rheological properties, temperature sensitivity, and filling kinetics between the two materials, it suffers from lengthy procedures, large equipment footprint, and low production cycle. Furthermore, the intermediate transfer process can easily introduce cross-contamination or cause secondary damage to the bag opening. To improve production efficiency and simplify the production line structure, existing technologies have proposed a simultaneous filling solution based on dual-cavity isolation plastic seal bags. These plastic seal bags form two independent chambers through an intermediate heat-sealing separator line, while retaining a shared single-sided opening. The aim is to utilize the same filling station and the same beam to drive two independent filling heads, simultaneously filling the cheese and liquid chambers, thereby eliminating intermediate transfers, shortening the production cycle, and reducing equipment complexity and cleanroom area requirements.

[0003] However, after filling, traditional plastic-sealed bags are still held in place by suction cups on both sides of the bag opening, preventing the bags from directly entering the sealing process. They must be manually removed from the suction cups and transferred to the heat-sealing station. This step not only increases the workload of operators and significantly reduces the overall automation efficiency, but also easily causes secondary contamination of the bag opening or wrinkles in the sealing area during manual transfer, affecting the subsequent sealing quality. In addition, during the filling process, the instantaneous impact of the high-speed liquid jet will cause the bottom of the bag to be subjected to high strain rate tension, while causing the bag body to shake violently and the center of gravity to shift momentarily. This causes the bag opening held by the suction cup to shake or tilt. The instability of the bag body caused by this impact further amplifies the center of gravity shift caused by the different weight growth rates of the two cavities, causing the bag to twist, tilt, or even slip on the receiving platform. Ultimately, this results in the sealing line being misaligned with the preset position of the bag opening during heat sealing, leading to an insecure seal or complete failure of the seal. To address this, we propose a cheese and liquid simultaneous filling equipment. Summary of the Invention

[0004] One of the technical problems this application aims to solve is that during the filling process, the instantaneous impact generated by the high-speed liquid jet will cause the bottom of the bag to be subjected to high strain rate tension, while also causing the bag body to shake violently and the center of gravity to shift momentarily. This causes the bag opening adsorbed by the suction cup to shake or tilt. The instability of the bag body caused by this impact further amplifies the center of gravity shift caused by the different weight growth rates of the two cavities, causing the bag to twist, tilt, or even slip on the receiving platform. Ultimately, this results in the sealing line being misaligned with the preset position of the bag opening during heat sealing, leading to an insecure seal or complete failure of the seal.

[0005] To address the aforementioned technical problems, this application provides a simultaneous cheese and liquid filling device, comprising a filling device body, a conveyor table, and a sealing device. The conveyor table is equipped with multiple carrier frames for moving plastic-sealed bags. Multiple rubber extrusion rods are installed inside the carrier frames on both sides of the plastic-sealed bags. Installation chambers are provided on both sides of the carrier frames on the conveyor table. Two fixed suction cups are movably installed on opposite sides of each installation chamber. An impact balancing unit connected to the fixed suction cups is provided inside each installation chamber. The impact balancing unit controls the fixed suction cups to generate adaptive displacement based on the impact on the plastic-sealed bag during filling to buffer the impact and maintain balance between the two fixed suction cups, thereby keeping the opening of the double-cavity plastic-sealed bag horizontal. A clamping unit connected to the extrusion rods is provided on the carrier frame. The clamping unit controls the relative movement of the two extrusion rods after filling to clamp and fix the plastic-sealed bag, and after fixing, drives the plastic-sealed bag into the sealing device for sealing via the carrier frame.

[0006] In some embodiments, the impact balancing unit includes a buffer component disposed within the mounting chamber, which buffers the impact on the plastic seal bag during filling. The buffer component is provided with a pressure-applying component, which enhances the negative pressure suction of the fixed suction cups on the plastic seal bag when it is impacted. A synchronization component is disposed within the mounting chamber, which maintains the balance between the two fixed suction cups, thereby keeping the opening of the double-cavity plastic seal bag horizontal.

[0007] In some embodiments, the buffer includes multiple sliding rods disposed within the mounting chamber. Two movable blocks are slidably disposed on the sliding rods. An air guide pipe is disposed on each movable block and connected to an external air pump and a fixed suction cup. A displacement groove is disposed on the mounting chamber. The air guide pipe passes through the displacement groove and is slidably connected to the displacement groove. A pressure spring is sleeved on the sliding rod. One end of the pressure spring abuts against the movable block, and the other end abuts against the wall of the mounting chamber. A limit plate is disposed on the sliding rod on the side of the movable block away from the pressure spring.

[0008] In some embodiments, the pressurizing component includes a pressurizing chamber disposed on an air guide pipe. The pressurizing chamber is provided with a one-way air inlet valve and is connected to the air guide pipe through the one-way air inlet valve. The pressurizing chamber is provided with a one-way exhaust valve and is connected to the outside. A piston plate is slidably disposed inside the pressurizing chamber. A return spring is disposed inside the pressurizing chamber. Both ends of the return spring are respectively connected to the piston plate and the inner wall of the pressurizing chamber. A push rod is disposed on the piston plate away from the return spring. One end of the push rod passes through the pressurizing chamber and the air guide pipe and is slidably connected to the pressurizing chamber and the air guide pipe.

[0009] In some embodiments, the synchronizing element includes a mounting plate disposed on two air ducts, a buffer chamber disposed on the mounting plate, a buffer plate slidably disposed within the buffer chamber, a buffer spring disposed within the buffer chamber, the two ends of the buffer spring being connected to the inner wall of the buffer chamber and the buffer plate respectively, a plurality of guide rings disposed within the mounting chamber, and a pull rope disposed on the buffer plate, the pull rope passing through the guide rings, and the two ends of the pull rope passing through the buffer springs in the two buffer chambers respectively, and being connected to the corresponding buffer plates.

[0010] In some embodiments, the clamping unit includes a conveying member disposed on a conveying table, which drives a carrier frame to move. A lifting member is disposed on the carrier frame, which drives a pressing rod to rise and fall. An unfolding member is disposed on the lifting member, which drives the pressing rod to deflect and unfold.

[0011] In some embodiments, the conveying component includes a mounting groove formed on a conveying platform, a power shaft is provided in the mounting groove, a conveying roller is provided on the power shaft, a conveyor belt is sleeved on the conveying roller, a plurality of base plates are provided on the conveyor belt, the base plates are connected to a support frame, a U-shaped rod is provided on the support frame, and a placement groove is formed on the U-shaped rod.

[0012] In some embodiments, the lifting component includes two lifting tubes disposed on a support frame, the lifting tubes being located on both sides of a U-shaped rod, a lifting rod being slidably disposed inside the lifting tubes, a power chamber being provided in the base plate, a drive screw being rotatably disposed inside the power chamber, one end of the drive screw extending into the lifting tube and threadedly connected to the lifting rod inside the lifting tube, a drive motor being disposed in the power chamber, the power output end of the drive motor being connected to the drive screw, a synchronous gear being disposed at one end of the drive screw located in the power chamber, and a synchronous toothed belt being sleeved on the synchronous gear.

[0013] In some embodiments, the unfolding member includes a positioning rod disposed on a lifting rod, a deflecting rod rotatably disposed on the positioning rod, a fixing chamber disposed on the deflecting rod, the fixing chamber being rotatably connected to a compression rod, a fixing plate one disposed on the positioning rod, a fixing plate two disposed on the deflecting rod, the fixing plate one and the fixing plate two being rotatably connected, and an expansion airbag disposed between the fixing plate one and the fixing plate two, a compression sleeve disposed at one end of the lifting rod located inside the lifting tube, and a compression airbag cooperating with the compression sleeve disposed on the side wall of the lifting tube, the compression airbag and the expansion airbag being connected through a pipe.

[0014] In some embodiments, the extrusion rod is fitted with a plurality of rubber rings.

[0015] This invention has at least the following beneficial effects:

[0016] This design, through the coordinated design of the support frame, extrusion rod, and clamping unit, allows the extrusion rod to automatically clamp the plastic-sealed bag after filling, driven by the lifting and unfolding components, and directly feed it into the sealing device along with the conveyor belt. This eliminates the manual bag handling and transfer process, reduces contamination in the sealing area and bag wrinkles caused by manual intervention, and enables seamless connection between filling and sealing operations, improving the overall line efficiency and the reliability of sealing quality. Simultaneously, addressing the bag impact and instability issues caused by the high-speed liquid jet during filling, the buffer component in the impact balancing unit utilizes an elastic combination of a sliding rod and a pressure spring to achieve adaptive displacement of the fixed suction cup in response to impact force, efficiently dissipating impact energy. The pressure component, through impact displacement... The piston plate inside the synchronous compression chamber instantly increases the negative pressure intensity leading to the fixed suction cups via a one-way air inlet valve. This dynamically enhances the suction force during impact to prevent the suction cups from slipping off. The synchronization component uses a mechanical linkage structure consisting of a buffer chamber, a buffer spring, and a pull rope to rigidly couple the air guide tubes on both sides. This forces the two fixed suction cups to maintain synchronous and equal-amplitude displacement when subjected to unbalanced impacts. This ensures that the opening of the double-chamber plastic seal bag remains horizontal throughout the filling process. This effectively overcomes the bag twisting, tilting, or slippage caused by instantaneous center of gravity shift and asynchronous weight increase of the two chambers. Ultimately, it ensures the high alignment of the sealing line with the preset position of the bag opening, achieving a substantial improvement in sealing strength and finished product qualification rate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the conveyor platform structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the conveying component structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the load-bearing frame structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the exploded structure of the installation compartment of the present invention;

[0022] Figure 6 This is a schematic diagram of the buffer structure of the present invention;

[0023] Figure 7 For the present invention Figure 6 Enlarged structural diagram of area A in the middle;

[0024] Figure 8 This is a schematic diagram of the pressure component structure of the present invention;

[0025] Figure 9 This is a schematic diagram of the lifting component structure of the present invention;

[0026] Figure 10 This is a schematic diagram of the unfolded component structure of the present invention;

[0027] Figure 11 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0028] In the diagram: 1. Filling equipment body; 2. Conveying table; 3. Sealing device; 4. Bearing frame; 5. Extrusion rod; 6. Mounting chamber; 7. Fixed suction cup; 8. Impact balancing unit; 9. Buffer component; 91. Sliding rod; 92. Moving block; 93. Pressure spring; 94. Air guide pipe; 95. Displacement groove; 96. Limiting plate; 10. Pressurizing component; 101. Pressurizing chamber; 102. One-way air inlet valve; 103. One-way air outlet valve; 104. Return spring; 105. Piston plate; 106. Push rod; 11. Synchronizing component; 111. Mounting plate; 112. Buffer chamber; 113. Buffer spring; 114. Buffer plate; 115. Pull rope; 11 6. Guide ring; 12. Clamping unit; 13. Conveying component; 131. Mounting slot; 132. Power shaft; 133. Conveyor belt; 134. Base plate; 135. U-shaped rod; 136. Placement slot; 14. Lifting component; 141. Lifting pipe; 142. Lifting rod; 143. Power chamber; 144. Drive screw; 145. Drive motor; 146. Synchronous gear; 147. Synchronous toothed belt; 15. Unfolding component; 151. Positioning rod; 152. Deflection rod; 153. Fixed chamber; 154. Fixed plate one; 155. Fixed plate two; 156. Inflatable airbag; 157. Extrusion sleeve; 158. Extrusion airbag; 16. Rubber ring. Detailed Implementation

[0029] 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.

[0030] Example 1: Please refer to Figures 1-10This invention provides a technical solution: a cheese and liquid simultaneous filling device, including a filling device body 1, a conveyor table 2, and a sealing device 3. The conveyor table 2 is equipped with multiple support frames 4 for moving plastic-sealed bags. Multiple rubber extrusion rods 5 are installed inside the support frames 4 on both sides of the plastic-sealed bags. Installation chambers 6 are provided on both sides of the support frames 4 on the conveyor table 2. Two fixed suction cups 7 are movably installed on opposite sides of each of the two installation chambers 6. An impact balancing unit 8 connected to the fixed suction cups 7 is provided inside each installation chamber 6. The impact balancing unit 8 is used to control the fixed suction cups 7 to generate adaptive displacement based on the impact on the plastic-sealed bag during filling, thereby buffering the impact and maintaining the balance between the two fixed suction cups 7, thus keeping the opening of the double-cavity plastic-sealed bag horizontal. A clamping unit 12 connected to the extrusion rods 5 is provided on the support frame 4. The clamping unit 12 is used to control the relative movement of the two extrusion rods 5 after filling to clamp and fix the plastic-sealed bag, and after fixing, it drives the plastic-sealed bag into the sealing device 3 for sealing via the support frame 4.

[0031] The impact balancing unit 8 includes a buffer 9 disposed in the installation chamber 6. The buffer 9 buffers the impact on the plastic seal bag during filling. The buffer 9 is provided with a pressure-applying component 10, which enhances the negative pressure suction of the fixed suction cup 7 on the plastic seal bag when it is impacted. The installation chamber 6 is provided with a synchronization component 11, which maintains the balance between the two fixed suction cups 7, thereby keeping the opening of the double-cavity plastic seal bag horizontal.

[0032] The buffer component 9 includes multiple sliding rods 91 disposed within the mounting chamber 6. Two movable blocks 92 are slidably disposed on each sliding rod 91. Each movable block 92 is provided with an air guide pipe 94, which is connected to an external air pump and a fixed suction cup 7. The mounting chamber 6 is provided with a displacement groove 95, through which the air guide pipe 94 passes and is slidably connected. A pressure spring 93 is sleeved on each sliding rod 91. One end of the pressure spring 93 abuts against the movable block 92, and the other end abuts against the wall of the mounting chamber 6. A limit plate 96 is provided on the sliding rod 91 on the side of the movable block 92 away from the pressure spring 93.

[0033] The pressurizing component 10 includes a pressurizing chamber 101 disposed on the air guide pipe 94. The pressurizing chamber 101 is provided with a one-way air intake valve 102 and is connected to the air guide pipe 94 through the one-way air intake valve 102. The pressurizing chamber 101 is provided with a one-way exhaust valve 103 and is connected to the outside. A piston plate 105 is slidably disposed inside the pressurizing chamber 101. A return spring 104 is disposed inside the pressurizing chamber 101. The two ends of the return spring 104 are respectively connected to the piston plate 105 and the inner wall of the pressurizing chamber 101. A push rod 106 is disposed on the side of the piston plate 105 away from the return spring 104. One end of the push rod 106 passes through the pressurizing chamber 101 and the air guide pipe 94 and is slidably connected to the pressurizing chamber 101 and the air guide pipe 94.

[0034] The synchronizing component 11 includes a mounting plate 111 disposed on two air ducts 94. A buffer chamber 112 is disposed on the mounting plate 111. A buffer plate 114 is slidably disposed in the buffer chamber 112. A buffer spring 113 is disposed in the buffer chamber 112. The two ends of the buffer spring 113 are respectively connected to the inner wall of the buffer chamber 112 and the buffer plate 114. A plurality of guide rings 116 are disposed in the mounting chamber 6. A pull rope 115 is disposed on the buffer plate 114. The pull rope 115 passes through the guide rings 116, and the two ends of the pull rope 115 pass through the buffer springs 113 in the two buffer chambers 112 respectively and are connected to the corresponding buffer plates 114.

[0035] When the filling equipment body 1 starts to inject cheese and liquid into the double-chamber bag at the same time, the high-speed jet on the liquid side will generate an instantaneous impact force, which will cause the bag body and suction cup on the liquid side to be impacted simultaneously. The downward impact force will drive the air guide tube 94 and the moving block 92 to overcome the elasticity of the pressure spring 93 and make an adaptive displacement along the sliding rod 91. The impact energy is absorbed by the displacement, which plays a buffering role and avoids the bag opening being damaged by rigid pulling.

[0036] As the air guide pipe 94 and the moving block 92 move downward relative to the mounting chamber 6, relative movement occurs inside the pressurized chamber 101 installed on the air guide pipe 94. Because the push rod 106 at the outer end of the piston plate 105 is fixed, the downward movement of the air guide pipe 94 forces the piston plate 105 to slide inside the pressurized chamber 101, thereby expanding the effective space inside the pressurized chamber 101. According to the gas law, as the volume of the sealed space increases, the internal air pressure decreases, forming a stronger negative pressure. This instantaneously generated additional negative pressure is directly introduced into the air guide pipe 94 passage through the one-way air inlet valve 102, thereby dynamically enhancing the negative pressure suction of the fixed suction cup 7 at the moment of impact, effectively preventing the suction cup from being pulled off. The design of the one-way exhaust valve 103 allows the gas drawn by the piston plate 105 during resetting to be discharged from the pressurized chamber 101, avoiding affecting the normal resetting of the piston plate 105.

[0037] During the filling of a double-chamber bag, due to the differences in material characteristics and filling speed between the liquid side and the cheese side, the impact force on the two chambers is always uneven, with one side always being greater than the other. Both sides of the air duct 94 are equipped with mounting plates 111, and the buffer chambers 112 on these plates contain buffer plates 114 and buffer springs 113. A pull rope 115 passes around multiple guide rings 116, with its two ends passing through the buffer springs 113 of the two buffer chambers 112 and connecting to their respective buffer plates 114. When the liquid side is impacted, its air duct 94 shifts, compressing the buffer spring 113 through the buffer plate 114 on that side and instantly transmitting the pulling force to the buffer plate 114 on the other side via the pull rope 115. This pulling force forces the air duct 94 on the other side to shift by the same amplitude, forcing the two fixed suction cups 7 to maintain synchronous and equal vertical displacement. This ensures that the opening of the double-chamber bag remains horizontal, solving the problem of bag twisting and tilting during the filling process.

[0038] Through the multi-level collaborative structure of the impact balancing unit 8, the problems of bag instability and sealing misalignment caused by filling impact are solved. The elastic floating mechanism composed of sliding rod 91, moving block 92 and pressure spring 93 provides the ability to flexibly absorb and convert impact energy, so that the fixed suction cup 7 can adapt to the impact force and transform rigid instantaneous tension into controllable elastic buffer, thus structurally eliminating the risk of bag opening tearing or plastic deformation due to rigid force.

[0039] The relative movement between the piston plate 105 fixed by the push rod 106 in the pressurizing component 10 and the pressurizing chamber 101 that moves with the air guide tube 94 automatically expands the sealed volume of the pressurizing chamber 101 when the impact displacement occurs and generates an instantaneous additional negative pressure positively correlated with the impact intensity according to the gas law. The incremental negative pressure is injected into the air path of the air guide tube 94 through the one-way air inlet valve 102, thereby dynamically enhancing the adsorption force of the fixed suction cup 7 at the moment of impact, forming a passive adaptive compensation mechanism of "the stronger the impact, the more stable the adsorption", which effectively prevents the suction cup from slipping and failing at the peak of the impact.

[0040] The mechanical forced linkage system consisting of the buffer chamber 112, the buffer spring 113 and the pull rope 115 in the synchronization component 11 rigidly couples the air guide pipes 94 on both sides through the flexible pull rope 115. When one side of the air guide pipe 94 is displaced due to unbalanced impact, the pull rope 115 immediately transmits the displacement signal to the other side with equal amplitude, forcing the two fixed suction cups 7 to always maintain synchronous and equal amplitude up and down floating, thus eliminating the displacement difference between the two sides.

[0041] The synergistic effect of the above structures ensures that the bag opening remains horizontal throughout the filling process, completely suppressing the tendency of the bag to twist, tilt, and slip due to instantaneous shift in the center of gravity and asynchronous increase in weight between the two cavities. This reduces the possibility of misalignment between the sealing line and the preset position of the bag opening, thereby substantially improving the sealing strength and the finished product qualification rate.

[0042] The clamping unit 12 includes a conveying component 13 disposed on the conveying table 2, which drives the carrier frame 4 to move. The carrier frame 4 is provided with a lifting component 14, which drives the extrusion rod 5 to rise and fall. The lifting component 14 is provided with an unfolding component 15, which drives the extrusion rod 5 to deflect and unfold.

[0043] The conveying component 13 includes an installation groove 131 formed on the conveying table 2. A power shaft 132 is provided in the installation groove 131. A conveying roller is provided on the power shaft 132. A conveyor belt 133 is sleeved on the conveying roller. A plurality of base plates 134 are provided on the conveyor belt 133. The base plates 134 are connected to the bearing frame 4. A U-shaped rod 135 is provided on the bearing frame 4. A placement groove 136 is formed on the U-shaped rod 135.

[0044] The lifting component 14 includes two lifting tubes 141 mounted on the support frame 4. The lifting tubes 141 are located on both sides of the U-shaped rod 135. A lifting rod 142 is slidably mounted inside the lifting tubes 141. A power chamber 143 is opened inside the base plate 134. A drive screw 144 is rotatably mounted inside the power chamber 143. One end of the drive screw 144 extends into the lifting tube 141 and is threadedly connected to the lifting rod 142 inside the lifting tube 141. A drive motor 145 is mounted inside the power chamber 143. The power output end of the drive motor 145 is connected to the drive screw 144. A synchronous gear 146 is mounted at one end of the drive screw 144 inside the power chamber 143. A synchronous toothed belt 147 is fitted on the synchronous gear 146.

[0045] The unfolding component 15 includes a positioning rod 151 mounted on a lifting rod 142. A deflection rod 152 is rotatably mounted on the positioning rod 151. A fixing chamber 153 is mounted on the deflection rod 152. The fixing chamber 153 is rotatably connected to the compression rod 5. A first fixing plate 154 is mounted on the positioning rod 151. A second fixing plate 155 is mounted on the deflection rod 152. The first fixing plate 154 and the second fixing plate 155 are rotatably connected, and an expansion airbag 156 is disposed between the first fixing plate 154 and the second fixing plate 155. A compression sleeve 157 is mounted on one end of the lifting rod 142 inside the lifting tube 141. A compression airbag 158 is mounted on the side wall of the lifting tube 141 to cooperate with the compression sleeve 157. The compression airbag 158 and the expansion airbag 156 are connected through a pipe.

[0046] After filling, before the negative pressure is released, the two fixed suction cups 7, under the action of the synchronizing element 11, first perform a synchronized approaching fine-tuning action, causing the bag opening to slightly close. At this time, the squeezing rod 5 is in the initial position below both sides of the bag opening, and the deflection rod 152 is in the retracted state. After the bag opening is slightly closed, the drive motor 145 drives the two drive screws 144 to rotate synchronously through the synchronous toothed belt 147 and the synchronous gear 146. The drive screws 144 drive the lifting rod 142 to start rising inside the lifting tube 141. During the rising process of the lifting rod 142, the squeezing sleeve 157 at its bottom moves upward accordingly, thereby squeezing the side wall of the lifting tube 141. After the airbag 158 is compressed, the internal gas is forced into the expansion airbag 156 between the positioning rod 151 and the deflection rod 152 through the connecting pipe. The expansion airbag 156 inflates and pushes the fixing plate 154 and the fixing plate 155 outward, thereby driving the deflection rod 152 to deflect around the positioning rod 151. The deflection of the deflection rod 152 drives the fixing chamber 153 at its end and the compression rod 5 rotatably set on the fixing chamber 153 to converge from both sides of the bag opening towards the center, squeezing and fixing the plastic bag. At the same time, as the lifting rod 142 continues to rise, the compression rod 5 also rises synchronously until it reaches the designated position of the bag opening.

[0047] In this way, the squeezing rod 5 completes a bottom-up clamping action. Since the initial clamping position is designed, the squeezing rod 5 only clamps the blank area at the top edge of the bag opening and does not contact the internal medium at all. After the squeezing rod 5 completes the stable clamping of the bag opening, the system controls the external air pump to cut off the negative pressure or switch to positive pressure, and the fixed suction cup 7 disengages from the bag opening and retracts. At this time, the bag has been firmly fixed by the squeezing rod 5. The release of the suction cup will not affect the bag's posture. After the suction cup is released, the bottom plate 134 and the carrier frame 4 are driven by the conveying roller and the conveyor belt 133 to smoothly enter the sealing device 3 to complete the heat sealing of the bag opening.

[0048] The U-shaped rod 135 on the support frame 4 and the placement groove 136 provide initial positioning support for the filled plastic-sealed bag, so that the bag has stable bottom support before the suction cup is released. During the rise of the lifting rod 142, the compression sleeve 157 at its bottom moves up and compresses the compression airbag 158 on the side wall of the lifting tube 141, converting the mechanical movement of the lifting rod 142 into a pneumatic signal, which is transmitted through the pipeline to the expansion airbag 156 between the positioning rod 151 and the deflection rod 152. The expansion airbag 156 inflates and pushes open the first fixing plate 154 and the second fixing plate 155, driving the deflection rod 152 to deflect around the positioning rod 151 and drive the compression rod 5 to retract from both sides of the bag opening to the center. This pneumatic linkage structure realizes the timing coupling of the lifting action and the clamping action, without the need for an additional independent drive source or control system. The compression rod 5 is rotatably connected to the deflection rod 152 through the fixed chamber 153, giving the clamping surface a certain adaptive adjustment capability, so that it can conform to the contour of the bag opening rather than rigidly compress.

[0049] The coordinated operation of the above structures enables the squeezing rod 5 to complete a bottom-up "lifting" clamping action. Its initial clamping position is precisely limited to the blank area at the upper edge of the bag opening, without contacting the medium inside the bag, thus avoiding contamination of the sealing area by the contents or leakage of the medium due to squeezing. More importantly, the entire clamping action is completed before the negative pressure is released, realizing a seamless handover logic of "clamping and fixing first, then releasing the suction cup". This ensures that the bag is under control at any moment, completely eliminating the risk of the bag tipping or misalignment caused by the suction cup being released first in the traditional process. After clamping, the carrier frame 4 directly enters the sealing device 3 with the conveyor belt 133. The filling and sealing stations are connected automatically without interruption, eliminating the intermediate links of manual bag picking, transfer and repositioning, and preventing secondary contamination of the sealing area and bag opening wrinkles caused by manual contact. This significantly improves the automation efficiency of the entire line and the batch consistency of sealing quality.

[0050] Example 2: Please refer to Figure 11 The present invention provides a technical solution: a plurality of rubber rings 16 are sleeved on the extrusion rod 5. Due to their high coefficient of friction and elastic deformation capability, the rubber rings 16 can embed into the micro-texture of the bag opening when clamping, which greatly enhances the circumferential gripping force and effectively prevents the bag from axial slippage and posture deviation during high-speed transfer or sealing. At the same time, their elastic characteristics can buffer the clamping impact and compensate for the parallelism error of the contact surface, so that the clamping pressure is evenly distributed, avoiding damage to the bag opening or excessive compression of the contents due to local stress concentration. Moreover, the multiple rubber rings 16 form multiple independent contact lines, so even if slippage occurs in individual areas, the remaining rings can still maintain the clamping effect, improving the alignment accuracy and sealing quality of the final sealing.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A simultaneous cheese and liquid filling equipment, comprising a filling equipment body (1), a conveyor table (2), and a sealing device (3), characterized in that: The conveyor (2) is equipped with multiple carrier frames (4) for moving the plastic seal bag. Multiple rubber extrusion rods (5) are installed in the carrier frames (4) on both sides of the plastic seal bag. The conveyor (2) is equipped with installation chambers (6) on both sides of the carrier frames (4). Two fixed suction cups (7) are movably installed on opposite sides of the two installation chambers (6). An impact balancing unit (8) connected to the fixed suction cups (7) is provided in the installation chambers (6). The impact balancing unit (8) is used to control the fixed suction cups (7) to generate adaptive displacement according to the impact on the plastic seal bag during filling to buffer the impact and maintain the balance between the two fixed suction cups (7), so that the opening of the double-cavity plastic seal bag is kept horizontal. The carrier frame (4) is equipped with a clamping unit (12) connected to the extrusion rods (5). The clamping unit (12) is used to control the relative movement of the two extrusion rods (5) after filling to clamp and fix the plastic seal bag, and after fixing, the plastic seal bag is driven into the sealing device (3) for sealing through the carrier frame (4).

2. The cheese and liquid simultaneous filling equipment according to claim 1, characterized in that: The impact balancing unit (8) includes a buffer (9) installed in the installation chamber (6). The buffer (9) buffers the impact on the plastic seal bag during filling. The buffer (9) is provided with a pressure member (10). The pressure member (10) enhances the negative pressure suction of the fixed suction cup (7) on the plastic seal bag when the plastic seal bag is impacted. The installation chamber (6) is provided with a synchronization member (11). The synchronization member (11) maintains the balance between the two fixed suction cups (7), thereby keeping the opening of the double-cavity plastic seal bag horizontal.

3. The cheese and liquid simultaneous filling equipment according to claim 2, characterized in that: The buffer (9) includes multiple sliding rods (91) disposed in the installation chamber (6). Two moving blocks (92) are slidably disposed on the sliding rods (91). An air guide pipe (94) is disposed on the moving block (92). The air guide pipe (94) is connected to an external air pump and is connected to a fixed suction cup (7). A displacement groove (95) is disposed on the installation chamber (6). The air guide pipe (94) passes through the displacement groove (95) and is slidably connected to the displacement groove (95). A pressure spring (93) is sleeved on the sliding rod (91). One end of the pressure spring (93) abuts against the moving block (92) and the other end abuts against the wall of the installation chamber (6). A limit plate (96) is disposed on the sliding rod (91) on the side of the moving block (92) away from the pressure spring (93).

4. The cheese and liquid simultaneous filling equipment according to claim 3, characterized in that: The pressurizing component (10) includes a pressurizing chamber (101) disposed on the air guide pipe (94). The pressurizing chamber (101) is provided with a one-way air intake valve (102), and the pressurizing chamber (101) is connected to the air guide pipe (94) through the one-way air intake valve (102). The pressurizing chamber (101) is provided with a one-way exhaust valve (103), which is connected to the outside. A piston plate (10) is slidably disposed inside the pressurizing chamber (101). 5) A return spring (104) is provided inside the pressurization chamber (101). The two ends of the return spring (104) are connected to the piston plate (105) and the inner wall of the pressurization chamber (101) respectively. A push rod (106) is provided on the side of the piston plate (105) away from the return spring (104). One end of the push rod (106) passes through the pressurization chamber (101) and the air guide pipe (94) and is slidably connected to the pressurization chamber (101) and the air guide pipe (94).

5. The cheese and liquid simultaneous filling equipment according to claim 4, characterized in that: The synchronizing component (11) includes a mounting plate (111) disposed on two air ducts (94). A buffer chamber (112) is disposed on the mounting plate (111). A buffer plate (114) is slidably disposed in the buffer chamber (112). A buffer spring (113) is disposed in the buffer chamber (112). The two ends of the buffer spring (113) are respectively connected to the inner wall of the buffer chamber (112) and the buffer plate (114). A plurality of guide rings (116) are disposed in the mounting chamber (6). A pull rope (115) is disposed on the buffer plate (114). The pull rope (115) passes through the guide ring (116), and the two ends of the pull rope (115) pass through the buffer springs (113) in the two buffer chambers (112) respectively and are connected to the corresponding buffer plates (114).

6. The cheese and liquid simultaneous filling equipment according to claim 5, characterized in that: The clamping unit (12) includes a conveyor (13) set on the conveyor table (2), which drives the carrier frame (4) to move. The carrier frame (4) is provided with a lifting member (14), which drives the extrusion rod (5) to rise and fall. The lifting member (14) is provided with an unfolding member (15), which drives the extrusion rod (5) to deflect and unfold.

7. The cheese and liquid simultaneous filling equipment according to claim 6, characterized in that: The conveying component (13) includes an installation groove (131) on the conveying platform (2), a power shaft (132) is provided in the installation groove (131), a conveying roller is provided on the power shaft (132), a conveying belt (133) is sleeved on the conveying roller, a plurality of base plates (134) are provided on the conveying belt (133), the base plates (134) are connected to the bearing frame (4), a U-shaped rod (135) is provided on the bearing frame (4), and a placement groove (136) is provided on the U-shaped rod (135).

8. The cheese and liquid simultaneous filling equipment according to claim 7, characterized in that: The lifting component (14) includes two lifting tubes (141) set on the support frame (4). The lifting tubes (141) are located on both sides of the U-shaped rod (135). A lifting rod (142) is slidably arranged inside the lifting tubes (141). A power chamber (143) is opened in the base plate (134). A drive screw (144) is rotatably arranged in the power chamber (143). One end of the drive screw (144) extends into the lifting tube (141) and is threadedly connected to the lifting rod (142) inside the lifting tube (141). A drive motor (145) is arranged in the power chamber (143). The power output end of the drive motor (145) is connected to the drive screw (144). A synchronous gear (146) is arranged at one end of the drive screw (144) located in the power chamber (143). A synchronous toothed belt (147) is sleeved on the synchronous gear (146).

9. The cheese and liquid simultaneous filling equipment according to claim 8, characterized in that: The unfolding component (15) includes a positioning rod (151) mounted on a lifting rod (142), a deflection rod (152) rotatably mounted on the positioning rod (151), a fixing chamber (153) mounted on the deflection rod (152), the fixing chamber (153) being rotatably connected to the extrusion rod (5), a fixing plate one (154) mounted on the positioning rod (151), and a fixing plate two (155) mounted on the deflection rod (152). 54) and fixed plate two (155) are rotatably connected, and an expansion airbag (156) is provided between the fixed plate one (154) and the fixed plate two (155). A compression sleeve (157) is provided at one end of the lifting rod (142) inside the lifting tube (141). A compression airbag (158) is provided on the side wall of the lifting tube (141) to cooperate with the compression sleeve (157). The compression airbag (158) and the expansion airbag (156) are connected through a pipe.

10. The cheese and liquid simultaneous filling equipment according to claim 9, characterized in that: Multiple rubber rings (16) are fitted onto the extrusion rod (5).

Images