Automatic multi-chamber bag opening machine

Abstract

The utility model discloses an automatic bag opening machine for a multi-chamber bag, which relates to the technical field of medical equipment and comprises a rack, a first chamber, a second chamber, a bag opening device, a bag opening device and a bag opening device, and is characterized in that the rack is internally provided with a first chamber with an opening in the front side; the pressing plate is located in the first cavity and slidably connected with the side wall of the first cavity, and the pressing plate can slide in the height direction of the first cavity; the length direction of the pressing plate is arranged along the length direction of the opening of the side wall of the first cavity; and the driving assembly is arranged on the rack and is used for driving the pressing plate to slide. By adopting the scheme, each chamber of the multi-chamber bag can be automatically extruded at the same time through the descending action of the bag pressing mechanism, manual curling is replaced, and medicines are mixed by controlling the pressing height, so that the bag body is prevented from being damaged and liquid leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an automatic bag opening machine for multi-chamber bags. Background Art

[0002] At present, the non-PVC medical packaging films produced by the pharmaceutical industry on the market are mainly used in the soft bag packaging of large infusion products. Among them, the soft bag multi-chamber bag making and filling machine produces products with two-chamber and three-chamber bag types. After delivery to the hospital, the nurse in the configuration room needs to roll the medicine bag manually and squeeze it hard to make the virtual welding rod in the middle expand under the action of pressure, so that the medicines in the two chambers and three chambers are mixed, avoiding the risk of external dosing and achieving the purpose of aseptic configuration. Because it is better than ordinary infusion products that require additional dosing and avoid the risk of contamination by microorganisms, multi-chamber bag products are needed to ensure the nutritional medication of special patients.

[0003] Due to the particularity of the multi-chamber bag opening method, nurses are required to have certain requirements on the strength and method of squeezing. Manual bag opening operation is time-consuming and labor-intensive, or the bag opening is incomplete. If there is a deviation in the squeezing process, it will lead to a certain risk of bag damage, causing leakage, and resulting in the scrapping of drugs. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that manual bag opening operation is time-consuming and laborious, or the bag opening is incomplete, and if there is a deviation in the squeezing process, there will be a certain risk of bag damage, resulting in leakage, and the medicine will be scrapped. The utility model aims to provide an automatic bag opening machine for multi-chamber bags. By adopting this solution, each chamber of the multi-chamber bag can be automatically squeezed at the same time through the descending action of the bag pressing mechanism, replacing manual curling, and the medicines are mixed by controlling the downward pressing height, thereby avoiding bag damage and leakage.

[0005] The utility model is realized by the following technical solutions:

[0006] An automatic bag opening machine for multi-chamber bags, comprising:

[0007] A frame, wherein the frame has a first chamber with an open front side;

[0008] A pressing plate, the pressing plate is located in the first chamber and is slidably connected to the side wall of the first chamber, and the pressing plate can slide along the height direction of the first chamber; the length direction of the pressing plate itself is arranged along the length direction of the opening of the side wall of the first chamber;

[0009] A driving assembly is arranged on the frame and is used to drive the pressing plate to slide.

[0010] Compared with the prior art, due to the particularity of the method for opening a multi-chamber bag, certain requirements are imposed on the force and method of extrusion by nurses. Manual bag-opening operation is time-consuming and laborious, or the bag-opening is incomplete. If there is a deviation during the extrusion process, there will be a certain risk of bag body damage, resulting in liquid leakage and drug waste. The present utility model provides an automatic multi-chamber bag opening machine. With this solution, through the downward movement of the bag pressing mechanism, each chamber of the multi-chamber bag can be automatically extruded simultaneously, replacing manual curling. By controlling the downward pressing height, the drugs are mixed, thereby avoiding liquid leakage due to bag body damage. In a specific solution, it includes a frame as a housing, with a first chamber inside the frame. At least one side of the first chamber is open. In this way, the multi-chamber bag can be placed at the bottom position of the first chamber through the open end. A pressing plate is slidably connected inside the first chamber. The length direction of the pressing plate is the same as the length direction of the open part. Several chambers of the multi-chamber bag are also placed in sequence along the length direction of the open part at the bottom of the first chamber, that is, below the pressing plate. Each chamber of the multi-chamber bag is located within the length range of the pressing plate. In this way, by driving the pressing plate to press down through the driving component, each chamber can be extruded simultaneously by the pressing plate, so that the isolation weak welding rod between adjacent two chambers is extruded and broken, realizing drug mixing. In the above solution, by designing a reasonable downward pressing height, the extrusion force can be accurately controlled, so as to accurately break the multi-chamber bag, replacing manual curling and extrusion, reducing the labor intensity, and avoiding the situation of liquid leakage and drug waste caused by a certain risk of bag body damage due to deviation during the extrusion process.

[0011] As a specific implementation manner of the sliding connection and for guiding the downward pressing of the pressing plate, sliding rails are provided on opposite side walls of the first chamber. The sliding rails are arranged along the height direction of the first chamber. Sliding blocks are slidably connected to the sliding rails. Two ends of the pressing plate are respectively connected to the two sliding blocks.

[0012] To achieve the detachable connection of the pressing plate, an installation seat is further included. The installation seat is L-shaped. One side of the installation seat is detachably connected to the sliding block, and the other side of the installation seat is detachably connected to the pressing plate. In this solution, grooves are provided at both ends of the pressing plate to avoid the sliding rails and sliding blocks. In this way, the length of the pressing plate can be longer and the coverage range can be wider. The installation seat is L-shaped, and its two sides are respectively detachably connected to the sliding block and the upper surface of the pressing plate. The detachable connection method is preferably a bolt connection.

[0013] To provide an installation position, a back plate is further fixed inside the first chamber. The back plate is located above the pressing plate, and the driving component is fixed to the back plate.

[0014] To achieve the lifting of the pressing plate and achieve a deceleration effect to avoid too fast downward pressure speed, it further includes a transmission disc and a pull rod plate. A through hole is opened on the back plate. The transmission disc is rotatably connected to the through hole and can rotate along its own axis. The upper end of the pull rod plate is eccentrically rotatably connected to the transmission disc, and the lower end of the pull rod plate is hinged to the pressing plate. The direction of the hinge is parallel to the rotation direction of the transmission disc.

[0015] The driving assembly includes a rotating motor, and the output end of the rotating motor is used to drive the transmission disc to rotate. In this solution, the transmission disc is rotatably connected to the back plate. The output end of the rotating motor is fixed to one end of the transmission disc, so that the rotation of the transmission disc around its own axis can be controlled by the rotating motor. The upper end of the pull rod plate is connected to the eccentric position of the transmission disc and is rotatably connected to the transmission disc. Its lower end is hinged to the pressing plate. In this way, during the rotation of the transmission disc, it can drive the upper end of the pull rod plate to rotate accordingly, so as to drive the pressing plate below to realize lifting through the rotational movement of the upper end of the pull rod plate. The rotational movement of the upper end of the pull rod plate can achieve a certain downward pressing distance through more rotation circles, so as to achieve a deceleration effect and avoid too fast downward pressure speed, causing damage to the multi-chamber bag.

[0016] As a specific implementation method of the rotational connection of the transmission disc, the transmission disc includes a small-diameter section and a large-diameter section connected in sequence. The small-diameter section extends into the through hole and is rotatably connected to the through hole. The small-diameter section is connected to the output end of the rotating motor. A plurality of mounting holes are evenly distributed in the circumferential direction of the large-diameter section. In this solution, a through hole is provided in the axial direction of the transmission disc, so as to facilitate the extension and fixation of the output end of the rotating motor. A plurality of mounting holes are provided at the large-diameter section to facilitate providing an eccentric connection position for the pull rod plate.

[0017] To achieve the rotational connection at both ends of the pull rod plate, it further includes a first pin shaft that sequentially passes through the upper end of the pull rod plate and the mounting hole. The first pin shaft is rotatably connected to the upper end of the pull rod plate and the mounting hole.

[0018] It further includes a second pin shaft. Two oppositely arranged hinge plates are also fixed on the upper side surface of the pressing plate. The second pin shaft sequentially penetrates through the two hinge plates. The lower end of the pull rod plate is located between the two hinge plates and is rotatably sleeved on the second pin shaft.

[0019] Both the first pin shaft and the second pin shaft are parallel to the axis of the transmission disc.

[0020] To brake the rotating motor, a cantilever bracket is also fixed above the interior of the first chamber. The cantilever bracket is located on the side of the drive disk away from the back plate. A sensor is provided on the cantilever bracket, and the position of the sensor is directly opposite the mounting hole at the uppermost part of the drive disk. The sensor is used to monitor the position of the upper end of the pull rod plate. In this solution, the cantilever bracket is used to hoist the sensor, and the position of the sensor is directly opposite the mounting hole at the uppermost part of the drive disk. In this way, in the initial state, the upper end of the pull rod plate is at the uppermost position, and at this time, the pressure plate is at the highest point. Start the rotating motor. When the upper end of the pull rod plate rotates one circle, it means that the pressure plate has been pressed down once and reset. The sensor detects again that the position of the upper end of the pressure plate reaches the uppermost position, that is, when the pressure plate continues to run upward to the origin sensor and triggers, the rotating motor automatically stops, thus completing a bag pressing process.

[0021] To adjust according to the height dimension or capacity of the multi-chamber bag to align the extrusion position, a scale identification plate is further included. The scale identification plate is located at the open position of the first chamber and is flush with the bottom of the first chamber. The scale identification plate is provided with a number of scales arranged in sequence in the direction close to the first chamber. Among them, 300 ml identification positions, 625 ml identification positions, 1000 ml identification positions, 1440 ml identification positions, 1920 ml identification positions, etc. can be set on the scale identification plate respectively, so as to align multi-chamber bags of different capacities and accurately align their extrusion positions.

[0022] To achieve abnormal reverse rotation of the rotating motor and functions such as speed regulation and relay protection, a second chamber is also provided inside the frame. A frequency converter and an intermediate relay connected to the rotating motor are provided inside the second chamber. A forward rotation button and a reverse rotation button for controlling the operation of the rotating motor are also provided on the side wall of the second chamber. Among them, the forward rotation button is used to start the rotating motor and control the forward rotation of the rotating motor. If an abnormality is found during operation, the reverse rotation button can be pressed, and the motor can reverse to lift the pressure plate in time.

[0023] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0024] 1. The present utility model provides an automatic multi-chamber bag opening machine. By adopting this solution, each chamber of the multi-chamber bag can be automatically extruded simultaneously through the downward movement of the bag pressing mechanism, replacing manual curling, and mixing the drugs by controlling the downward pressing height, thereby avoiding bag body breakage and liquid leakage.

[0025] 2. The present utility model provides an automatic multi-chamber bag opening machine. With this solution, during the rotation of the drive disk, the upper end of the pull rod plate can be driven to rotate accordingly, so as to drive the pressing plate below to move up and down through the rotational movement of the upper end of the pull rod plate. The rotational movement of the upper end of the pull rod plate can achieve a certain pressing distance through more rotation cycles, thereby achieving a deceleration effect and avoiding damage to the multi-chamber bag caused by too fast pressing speed.

[0026] 3. The present utility model provides an automatic multi-chamber bag opening machine. With this solution, in the initial state, the upper end of the pull rod plate is located at the uppermost position, and at this time, the pressing plate is at the highest point. Start the rotating motor. When the upper end of the pull rod plate rotates one circle, it means that the pressing plate has been pressed once and reset. The sensor detects again that the upper end position of the pressing plate reaches the uppermost position, that is, when the pressing plate continues to move upward to trigger at the origin sensor, the rotating motor automatically stops, thus completing one pressing process.

[0027] 4. The present utility model provides an automatic multi-chamber bag opening machine. With this solution, 300 ml marking positions, 625 ml marking positions, 1000 ml marking positions, 1440 ml marking positions, 1920 ml marking positions, etc. can be respectively set on the scale marking plate, so as to align multi-chamber bags of different capacities and accurately align their extrusion positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings. In the drawings:

[0029] Figure 1 is an elevation view of an automatic multi-chamber bag opening machine according to an embodiment provided by the present utility model;

[0030] Figure 2 is a side sectional view of an automatic multi-chamber bag opening machine according to an embodiment provided by the present utility model;

[0031] Figure 3 is a front view of an automatic multi-chamber bag opening machine according to an embodiment provided by the present utility model;

[0032] Figure 4 is an embodiment provided by the present utility model Figure 3 in enlarged view A;

[0033] Figure 5 is a three-view drawing of a pressing plate according to an embodiment provided by the present utility model;

[0034] Figure 6 Two views of a drive disk according to an embodiment provided by the present utility model.

[0035] Labels in the drawings and corresponding component names:

[0036] 1 - Slide rail, 2 - Slide block, 3 - Mounting seat, 4 - Sensor, 5 - Cantilever bracket, 6 - Tie rod plate, 7 - Drive disk, 8 - Pressure plate, 9 - Scale identification plate, 10 - Frequency converter, 11 - Air switch, 12 - Forward rotation button, 13 - Power cord, 14 - Intermediate relay, 15 - Frame, 16 - Rotating motor, 17 - Back plate, 18 - Reverse rotation button. Specific embodiments

[0037] To make the objectives, technical solutions, and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below in conjunction with embodiments and the drawings. The illustrative embodiments and descriptions thereof of the present utility model are only used to explain the present utility model and shall not be construed as a limitation to the present utility model.

[0038] Embodiment:

[0039] This embodiment provides a multi - chamber bag automatic bag - opening machine, as Figures 1 - 6 shown, including:

[0040] A frame 15, with a first chamber having an open front side inside the frame 15;

[0041] A pressure plate 8, which is located inside the first chamber and is slidably connected to the side wall of the first chamber. The pressure plate 8 can slide along the height direction of the first chamber; the length direction of the pressure plate 8 is set along the length direction of the open side of the side wall of the first chamber;

[0042] A drive assembly, which is arranged on the frame 15 and is used to drive the pressure plate 8 to slide.

[0043] In the prior art, due to the particularity of the method for opening a multi-chamber bag, certain requirements are imposed on the force and method of extrusion by nurses. Manual bag-opening operation is time-consuming and laborious, or the bag-opening is incomplete. If there is a deviation during the extrusion process, there will be a certain risk of bag body damage, resulting in liquid leakage and drug waste. The present utility model provides an automatic multi-chamber bag opening machine. With this solution, through the downward movement of the bag pressing mechanism, each chamber of the multi-chamber bag can be automatically extruded simultaneously, replacing manual curling. By controlling the downward pressing height, the drugs can be mixed, thereby avoiding liquid leakage caused by bag body damage. In a specific solution, it includes a frame 15 serving as a housing. There is a first chamber inside the frame 15, and at least one side of the first chamber is open. In this way, the multi-chamber bag can be placed at the bottom position of the first chamber through the open end. A pressing plate 8 is slidably connected inside the first chamber. The length direction of the pressing plate 8 is the length direction of the open part. Several chambers of the multi-chamber bag are also sequentially placed at the bottom of the first chamber along the length direction of the open part, that is, below the pressing plate 8. Each chamber of the multi-chamber bag is located within the length range of the pressing plate 8. In this way, by driving the pressing plate 8 to press down through the driving component, each chamber can be extruded simultaneously by the pressing plate 8, so that the isolation weak welding rod between adjacent two chambers is extruded and broken, realizing drug mixing. In the above solution, by designing a reasonable downward pressing height, the extrusion force can be accurately controlled, so as to accurately break the multi-chamber bag, replacing manual curling and extrusion, reducing the labor intensity, and avoiding the situation of liquid leakage and drug waste caused by a certain risk of bag body damage due to deviation during the extrusion process.

[0044] As a specific implementation manner of the sliding connection and for guiding the downward pressing of the pressing plate 8, sliding rails 1 are provided on both opposite side walls of the first chamber. The sliding rails 1 are arranged along the height direction of the first chamber. Sliding blocks 2 are slidably connected on the sliding rails 1. Both ends of the pressing plate 8 are respectively connected to the two sliding blocks 2.

[0045] To achieve the detachable connection of the pressing plate 8, an installation seat 3 is further included. The installation seat 3 is L-shaped. One side edge of the installation seat 3 is detachably connected to the sliding block 2, and the other side edge of the installation seat 3 is detachably connected to the pressing plate 8. In this solution, both ends of the pressing plate 8 are provided with grooves for avoiding the sliding rails 1 and the sliding blocks 2. In this way, the pressing plate 8 can be longer and have a wider coverage range. The installation seat 3 is L-shaped, and its two side edges are respectively detachably connected to the sliding block 2 and the upper side of the pressing plate 8. The detachable connection method is preferably a bolt connection.

[0046] To provide an installation position, a back plate 17 is further fixed inside the first chamber. The back plate 17 is located above the pressing plate 8, and the driving component is fixed on the back plate 17.

[0047] To realize the lifting of the pressing plate 8 and achieve a deceleration effect to avoid too fast downward pressure speed, it further includes a transmission disc 7 and a pull rod plate 6. A through hole is opened on the back plate 17. The transmission disc 7 is rotationally connected to the through hole and can rotate along its own axis; the upper end of the pull rod plate 6 is eccentrically rotationally connected to the transmission disc 7, and the lower end of the pull rod plate 6 is hinged to the pressing plate 8, and the hinging direction is parallel to the rotation direction of the transmission disc 7.

[0048] The driving assembly includes a rotating motor 16, and the output end of the rotating motor 16 is used to drive the transmission disc 7 to rotate. In this solution, the transmission disc 7 is rotationally connected to the back plate 17, and the output end of the rotating motor 16 is fixed to one end of the transmission disc 7. Thus, the transmission disc 7 can be controlled by the rotating motor 16 to rotate around its own axis; the upper end of the pull rod plate 6 is connected to the eccentric position of the transmission disc 7 and is rotationally connected to the transmission disc 7. Its lower end is hinged to the pressing plate 8. In this way, during the rotation of the transmission disc 7, it can drive the upper end of the pull rod plate 6 to rotate accordingly, so as to drive the pressing plate 8 below to realize lifting through the rotational movement of the upper end of the pull rod plate 6. The rotational movement of the upper end of the pull rod plate 6 can achieve a certain downward pressure distance through more rotation circles, so as to achieve a deceleration effect and avoid too fast downward pressure speed, causing damage to the multi-chamber bag.

[0049] As a specific implementation method of the rotational connection of the transmission disc 7, the transmission disc 7 includes a small-diameter section and a large-diameter section connected in sequence. The small-diameter section extends into the through hole and is rotationally connected to the through hole; the small-diameter section is connected to the output end of the rotating motor 16; a plurality of mounting holes are evenly distributed in the circumferential direction of the large-diameter section. In this solution, the axis direction of the transmission disc 7 has a through hole, which is convenient for the output end of the rotating motor 16 to extend and be fixed; a plurality of mounting holes are opened at the large-diameter section to facilitate providing an eccentric connection position for the pull rod plate 6.

[0050] To realize the rotational connection at both ends of the pull rod plate 6, it further includes a first pin shaft that sequentially passes through the upper end of the pull rod plate 6 and the mounting hole, and the first pin shaft is rotationally connected to the upper end of the pull rod plate 6 and the mounting hole.

[0051] It further includes a second pin shaft. Two oppositely arranged hinge plates are further fixed on the upper side surface of the pressing plate 8. The second pin shaft sequentially penetrates through the two hinge plates; the lower end of the pull rod plate 6 is located between the two hinge plates and is rotationally sleeved on the second pin shaft.

[0052] The first pin shaft and the second pin shaft are both parallel to the axis of the transmission disc 7.

[0053] To brake the rotary motor 16, a cantilever bracket 5 is also fixed above the interior of the first chamber. The cantilever bracket 5 is located on the side of the drive disk 7 away from the back plate 17. A sensor 4 is provided on the cantilever bracket 5. The position of the sensor 4 is directly opposite the mounting hole at the uppermost part of the drive disk 7. The sensor 4 is used to monitor the upper end position of the pull rod plate 6. In this solution, the cantilever bracket 5 is used to hoist the sensor 4, and the position of the sensor 4 is directly opposite the mounting hole at the uppermost part of the drive disk 7. Thus, in the initial state, the upper end of the pull rod plate 6 is at the uppermost position, and at this time, the pressure plate 8 is at the highest point. When the rotary motor 16 is started, when the upper end of the pull rod plate 6 rotates one circle, it means that the pressure plate 8 has been pressed down once and reset. The sensor 4 detects again that the upper end position of the pressure plate 8 reaches the uppermost position, that is, when the pressure plate 8 continues to run upward to trigger the origin sensor 4, the rotary motor 16 automatically stops, thereby completing a bag pressing process.

[0054] To adjust according to the height dimension or capacity of the multi-chamber bag to align the extrusion position, a scale identification plate 9 is further included. The scale identification plate 9 is located at the open position of the first chamber and is flush with the bottom of the first chamber. The scale identification plate 9 has a number of scales arranged in sequence towards the first chamber. Among them, a 300 ml identification position, a 625 ml identification position, a 1000 ml identification position, a 1440 ml identification position, a 1920 ml identification position, etc. can be set on the scale identification plate 9 respectively, so as to align multi-chamber bags of different capacities and accurately align their extrusion positions.

[0055] To achieve abnormal reverse rotation of the rotary motor 16, as well as functions such as speed regulation and relay protection, a second chamber is also provided inside the frame 15. A frequency converter 10 and an intermediate relay 14 connected to the rotary motor 16 are provided inside the second chamber. A forward rotation button 12 and a reverse rotation button 18 for controlling the operation of the rotary motor 16 are also provided on the side wall of the second chamber. Among them, the forward rotation button 12 is used to start the rotary motor 16 and control its forward rotation. If an abnormality is found during operation, the reverse rotation button 18 can be pressed, and the motor can be reversed to lift the pressure plate 8 in time.

[0056] Specific working principle:

[0057] Place the multi-chamber bag at the bottom of the equipment platen 8, align the front with the same graduation line on the graduation identification board 9 according to the bag type size. After confirming the correct placement, press the forward rotation button 12 to control the start of the rotary motor 16. The output end of the rotary motor 16 controls the drive disk 7 to rotate around its own axis. The drive disk 7 eccentrically drives the upper end of the pull rod plate 6 to rotate. Since both ends of the pull rod plate 6 are hinged, the rotation of the upper end of the pull rod plate 6 can drive the platen 8 to lift and lower through its own lower end. During the descent of the platen 8, each chamber is squeezed to press open the virtual welding rod between adjacent chambers. After pressing open, the platen 8 runs upward to trigger at the origin sensor 4 and the motor automatically stops, completing one bag pressing process. If any abnormality is found during the operation, the reverse rotation button 18 can be pressed, and the motor can reverse to lift the platen 8 in time.

[0058] The specific implementation manners described above further elaborate on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above are only specific implementation manners of the present utility model and are not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An automatic multi-chamber bag opening machine, characterized in that: include: A frame (15), wherein the frame (15) has a first chamber with an open front side; A pressing plate (8), the pressing plate (8) is located in the first chamber and is slidably connected to the side wall of the first chamber, and the pressing plate (8) can slide along the height direction of the first chamber; the length direction of the pressing plate (8) itself is arranged along the length direction of the opening of the side wall of the first chamber; A driving assembly is arranged on the frame (15) and is used to drive the pressing plate (8) to slide.

2. The automatic multi-chamber bag opening machine according to claim 1, characterized in that: The first chamber has two opposite side walls with slide rails (1), the slide rails (1) are arranged along the height direction of the first chamber, the slide rails (1) have sliding blocks (2) connected in a sliding manner, and the two ends of the pressure plate (8) are respectively connected to the two sliding blocks (2).

3. The automatic multi-chamber bag opening machine according to claim 2, characterized in that: It also comprises a mounting seat (3), the mounting seat (3) being L-shaped, one side of the mounting seat (3) being detachably connected to the slider (2), and the other side of the mounting seat (3) being detachably connected to the pressure plate (8).

4. The automatic multi-chamber bag opening machine according to claim 1, characterized in that: A back plate (17) is also fixed in the first chamber, the back plate (17) is located above the pressure plate (8), and the drive assembly is fixed on the back plate (17).

5. The automatic multi-chamber bag opening machine according to claim 4, characterized in that: It also includes a transmission disc (7) and a pull rod plate (6), wherein a through hole is formed on the back plate (17), the transmission disc (7) and the through hole are rotatably connected and can rotate along its own axis; the upper end of the pull rod plate (6) is eccentrically rotatably connected to the transmission disc (7), and the lower end of the pull rod plate (6) is hinged to the pressure plate (8), and the direction of the hinge is parallel to the rotation direction of the transmission disc (7); The driving assembly comprises a rotating motor (16), and the output end of the rotating motor (16) is used to drive the transmission disc (7) to rotate.

6. The automatic multi-chamber bag opening machine according to claim 5, characterized in that: The transmission disc (7) comprises a small diameter section and a large diameter section which are connected in sequence, the small diameter section extending into the through hole and being rotationally connected to the through hole; the small diameter section is connected to the output end of the rotating motor (16); and a plurality of mounting holes are evenly distributed in the circumferential direction of the large diameter section.

7. The automatic multi-chamber bag opening machine according to claim 6, characterized in that: It also includes a first pin shaft that passes through the upper end of the pull rod plate (6) and the mounting hole in sequence, and the first pin shaft and the upper end of the pull rod plate (6) and the mounting hole are all rotatably connected; It also includes a second pin shaft, and two hinged plates arranged opposite to each other are fixed on the upper side of the pressure plate (8), and the second pin shaft passes through the two hinged plates in sequence; the lower end of the pull rod plate (6) is located between the two hinged plates and is rotatably sleeved on the second pin shaft; The first pin shaft and the second pin shaft are both parallel to the axis of the transmission plate (7).

8. The automatic multi-chamber bag opening machine according to claim 6, characterized in that: A cantilever bracket is also fixed above the interior of the first chamber. The cantilever bracket is located on the side of the transmission disk (7) away from the back plate (17). The cantilever bracket is provided with a sensor (4). The position of the sensor (4) is exactly opposite to the uppermost mounting hole of the transmission disk (7). The sensor (4) is used to monitor the upper end position of the pull rod plate (6).

9. The automatic multi-chamber bag opening machine according to claim 5, characterized in that: It also comprises a scale identification plate (9), which is located at the opening of the first chamber and is flush with the bottom of the first chamber; the scale identification plate (9) has a plurality of scales arranged in sequence in a direction close to the first chamber.

10. The automatic multi-chamber bag opening machine according to claim 5, characterized in that: The frame (15) is also provided with a second chamber, wherein the second chamber is provided with a frequency converter (10) and an intermediate relay (14) connected to the rotating motor (16); the side wall of the second chamber is also provided with a forward button (12) and a reverse button (18) for controlling the operation of the rotating motor (16).

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