Feeding system of bagging machine and bagging machine

Abstract

The invention provides a feeding system of a bagging machine and the bagging machine. The device specifically comprises a discharging mechanism used for containing a material roll and capable of driving the material roll to rotate to release a film material; the tensioning mechanism is provided with a plurality of supporting rollers which are fixed in position and are used for winding the film material, and a tensioning roller which is used for changing the discharging direction of the film material, can automatically adjust the position up and down and is used for winding the film material, and is used for adjusting the tensioning degree of the film material; and the feeding mechanism is used for receiving the film material passing through the tensioning mechanism and feeding the film material to a bagging area. The feeding speed, the feeding speed and the line body speed are reasonably controlled and matched, smooth feeding is guaranteed, and the feeding length meets the technological requirement. In order to ensure the sealing quality, an air conditioner reversing function is added before the sealing action, the film allowance at the sealing position is ensured, the film is shaped in the vertical direction, and the phenomena of sealing wrinkles and long and short feet are prevented.

Description

Technical Field

[0001] The invention relates to the technical field of bagging machines, in particular to a bagging machine feeding system and a bagging machine. Background Art

[0002] In the existing air-conditioning production line, the side bagging equipment has become an indispensable part of the production process. With this equipment, the production efficiency has been significantly improved, and 3,000 air conditioners are produced per shift, and each air conditioner needs to be covered with a plastic bag. In order to achieve this goal, the automated side bagging equipment replaced the traditional manual operation, which not only effectively saved labor, but also greatly improved production efficiency.

[0003] The working principle of the side bagging equipment mainly includes four key parts: unloading mechanism, punching mechanism, feeding mechanism and bagging area. First, the unloading area is used to store the cylindrical rolls, and the unloading mechanism rotates the rolls to continuously release the film. Then, the film is punched by the punching mechanism to prepare for the subsequent bagging operation. Next, the feeding mechanism sends the processed film to the bagging area to ensure that the packaging plastic bag is automatically put on the air conditioner body after the air conditioner is assembled. Finally, after the bagging is completed, the product is sealed through the hot melt sealing process to ensure that the packaging bag fits tightly.

[0004] From the above workflow, it can be seen that the release speed of the material roll of the unloading mechanism in the unloading area directly affects the tension state of the film material, which is crucial to the entire bagging process. If the film material is too tight or too loose, it may lead to poor feeding and thus fail to meet the process requirements. This will not only affect the final sealing strength, but also the appearance of the air-conditioning product, and thus affect the quality of the product. Summary of the invention

[0005] In order to solve the technical problem in the prior art that the feeding process of a bagging machine is not smooth due to tension, the present invention provides a bagging machine feeding system and a bagging machine.

[0006] The technical solution adopted by the present invention is:

[0007] The present invention proposes a feeding system for a bagging machine, which specifically comprises:

[0008] The material unwinding mechanism is used to place the material roll and can drive the material roll to rotate and release the film material;

[0009] The tensioning mechanism is provided with a plurality of support rollers for winding the film material in a fixed position, which are used to change the discharge direction of the film material, and a tensioning roller for winding the film material which can automatically adjust the position up and down, which is used to adjust the tension of the film material;

[0010] The feeding mechanism receives the film material after passing through the tensioning mechanism and delivers the film material to the bagging area;

[0011] The controller adjusts the speed at which the material film is released by the unloading mechanism according to the position signal of the tensioning roller.

[0012] Specifically, the tensioning mechanism includes:

[0013] A roller bracket, wherein a first supporting roller and a second supporting roller are arranged in parallel at intervals on the roller bracket;

[0014] A pair of vertical slide rail seats are installed on the roller bracket and are located between the first support roller and the second support roller. A tensioning roller is arranged on the pair of vertical slide rail seats, and the tensioning roller can slide up and down along the vertical slide rail seats;

[0015] A detection device detects a position signal of the tensioning roller.

[0016] Furthermore, the detection device includes: an upper detection photoelectric device arranged corresponding to the top of the vertical slide rail seat; and a lower detection photoelectric device arranged corresponding to the bottom of the vertical slide rail seat.

[0017] The present invention also includes a controller. When the upper detection photoelectric detection senses that the tensioning roller sends a position signal, the controller controls the discharge motor of the discharge mechanism to switch to a preset high-speed gear.

[0018] The present invention also includes a controller. When the lower detection photoelectric detection senses that the tensioning roller sends a position signal, the controller controls the discharge motor of the discharge mechanism to switch to a preset low speed gear.

[0019] The present invention also provides a bagging machine, characterized in that it comprises the above-mentioned bagging machine feeding system.

[0020] The bagging machine also includes: a conveying mechanism, a transmission path of which passes through the bagging area and is used to transport the bagging equipment. The film material delivered by the feeding mechanism is sleeved on the bagging equipment in the bagging area.

[0021] Furthermore, the conveying mechanism comprises:

[0022] A conveying roller, the end of which is located in the bagging area, is driven by a first conveying motor and is used to convey the conveying bagging device to the bagging area, or to convey the bagging device in the bagging area out;

[0023] A conveyor belt line, located at the exit side of the bagging area, receives the bagging equipment sent out by the conveyor roller;

[0024] The in-position detection photoelectric device is arranged between the conveying roller and the conveying belt line and is used to detect the position signal of the bagging equipment.

[0025] Specifically, when the in-place detection photoelectric device detects the position signal of the bagging equipment, the conveying motor of the conveyor belt line is controlled to run, and the feeding motor of the feeding mechanism is controlled to start. When the in-place detection photoelectric device loses the position signal of the bagging equipment, the conveying motor and the feeding motor are controlled to stop running after a preset time t1, and then the conveying motor is controlled to reverse for a preset time t2, and then the film material is hot-melted, and t2 is less than or equal to t1.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] The present invention reasonably controls and matches the discharge speed, feeding speed and line speed to ensure smooth feeding and that the feeding length meets the process requirements. To ensure the sealing quality, an air-conditioning reversing function is added before the sealing action to ensure the film surplus at the sealing and to shape the film in the vertical direction to prevent sealing wrinkles and the phenomenon of long and short legs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 is a front view of an embodiment of the present invention;

[0030] Figure 2 is a side view of an embodiment of the present invention;

[0031] Figure 3 is a top view of an embodiment of the present invention;

[0032] Figure 4 is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0033] Figure 5 It is a schematic diagram of the film material transmission of the air conditioning unit of the present invention;

[0034] Figure 6 is the control flow diagram of the present invention;

[0035] 1. Unloading mechanism;

[0036] 10. Material roll; 101. Film material;

[0037] 2. Tensioning mechanism;

[0038] 21. First supporting roller; 22. Tensioning roller; 23. Second supporting roller; 24. Vertical slide rail seat; 25. Roller bracket;

[0039] 3. Punching mechanism;

[0040] 4. Feeding mechanism;

[0041] 5. Conveying mechanism; 50. Bagging area; 51. Conveying roller; 52. Conveying belt line; 53. In-place detection photoelectric. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0044] The current problems with the side-type bagging equipment of air-conditioning production lines mainly focus on the instability of the film material release speed and tension state. Since the release speed of the material roll in the discharge area is not easy to accurately control, the film material may be too tight or too loose during the feeding process, which affects the smoothness and accuracy of the feeding. This unstable feeding will lead to inaccurate bagging length, which in turn affects the sealing strength and appearance, resulting in a loose seal or defects. In addition, the instability of the film material will also reduce production efficiency, increase the risk of equipment stagnation, lead to a decrease in the overall output of the production line, and affect the consistency of product appearance, thereby affecting product quality and market competitiveness. Therefore, the existing equipment urgently needs to be further optimized in terms of controlling film material release, feeding accuracy and tension state to improve production efficiency and ensure the consistency of packaging quality and product appearance.

[0045] In this regard, Figures 1 to 5As shown, the present invention proposes a feeding system for a bagging machine, which specifically includes: a feeding mechanism 1, a tensioning mechanism 2, a feeding mechanism 4 and a controller. The feeding mechanism 1 is located in the feeding area at the tail end of the bagging machine. The feeding mechanism 1 specifically includes a feeding roller supported by a feeding bracket, and a feeding motor driving the feeding roller to rotate. The feeding roller can pass through the material roll 10, and at the same time, the feeding motor drives the feeding roller to drive the material roll 10 to rotate and release the film material 101; the tensioning mechanism 2 is provided with a plurality of fixed support rollers, and a tensioning roller 22 that can automatically adjust the position up and down, wherein the function of the support roller is similar to that of a pulley, mainly to change the steering position of the film material 101, and the tensioning roller 22 is located below between the two support rollers, and the film material 101 is first fed from one support roller. The film material 101 is wound around the top of the roller, then wound around the bottom of the tensioning roller 22 downwards, and then wound around the top of another supporting roller, that is, the film material 101 between the two supporting rollers is in a U shape. When the film material 101 is tensioned during the release process, the gravity of the tensioning roller 22 is overcome, and the film material 101 is driven to automatically move upward to adjust the position. When the film material 101 is relaxed during the release process, the gravity of the tensioning roller 22 is greater than the force of the film material 101 being pulled, and the tensioning roller 22 automatically moves downward to adjust the position with its own gravity; the feeding mechanism 4 receives the film material 101 after passing through the tensioning mechanism 2, and delivers the film material 101 to the bagging area 50. The controller adjusts the speed of the unloading motor according to the position signal of the tensioning roller 22.

[0046] The present invention can determine the tension of the film material 101 during the release process by a tensioning roller 22 that can move up and down, and adjust the rotation speed of the discharge motor to change the tension of the film material 101 by detecting the position signal of the tensioning roller, so as to avoid the film material 101 being too loose and affecting the feeding smoothness of the entire feeding system, so as to ensure the accurate bagging length and avoid affecting the sealing strength and appearance.

[0047] Specifically, the preset low speed gear of the unloading motor is slightly lower than the feeding speed of the feeding motor of the feeding mechanism, and the preset high speed gear of the unloading motor is higher than the feeding speed of the feeding motor of the feeding mechanism. Thus, adjusting the speed gear of the unloading motor can change the tension of the film material.

[0048] like Figure 4As shown, in a specific embodiment, the tensioning mechanism 2 specifically includes: a roller bracket 25, a vertical slide rail seat 24, a tensioning roller 22 and a detection device. The roller bracket 25 is used as the main structural support component of the tensioning mechanism 2. The roller bracket 25 is provided with a first support roller 21 and a second support roller 23 in parallel. The function of the support roller is to change the direction of the film material 101 by providing a supporting force, so as to ensure that the film material 101 can be turned at different positions, and the discharge height and position of the film material 101 can be changed. The support roller can also be supplemented as needed. For example, if the subsequent mechanism is at a lower position, one or more support rollers can be added to make the film material 101 continuous. The vertical slide rail seat 24 is installed on the roller bracket 25 and is located between the first support roller 21 and the second support roller 23. A tensioning roller 22 is arranged between a pair of vertical slide rail seats 24. The tensioning roller 22 is parallel to the support roller, and its two ends can slide up and down along the vertical slide rail seat 24, so that the tension of the film material 101 can be reflected by its position. The detection device is used to detect the position signal of the tensioning roller 22, monitor the position change of the tensioning roller 22 through a sensor or encoder and other devices, and feed it back to the control system to achieve dynamic adjustment and precise control. Through the feedback signal of the detection device, the control system can automatically adjust the rotation speed of the discharge motor of the discharge mechanism 1 according to actual needs to ensure that the tension of the film material 101 is maintained in a suitable state.

[0049] The tensioning mechanism 2 of the present invention can adjust the tension of the film material 101 by the gravity of the tensioning roller 22 itself by setting an adjustable position of the tensioning roller 22 in the vertical direction, and can reflect the tension of the film material 101 by its position. The coordinated use of the detection device can monitor the tension state of the film material 101.

[0050] Specifically, the roller bracket 25 is arranged on the box body of the bagging machine, and the left side of the box body is the discharge mechanism 1. The roller bracket 25 is arranged on the left edge of the box body and extends upward. The specific structure is that two vertical rods are arranged on the front and rear sides of the left edge of the box body, and a left cross bar extending vertically from the left side is arranged on the top of the two vertical rods. The first supporting roller 21 is installed between the two left cross bars, and a right cross bar extending vertically from the right side is arranged on the upper part of the two vertical rods. The second supporting roller 23 is installed between the two right cross bars. Two vertical slide rail seats 24 are respectively installed on the left side surfaces of the two vertical rods and are parallel to the vertical rods.

[0051] In a specific embodiment, the detection device includes: an upper detection photoelectric device arranged corresponding to the top of the vertical slide rail seat 24; and a lower detection photoelectric device arranged corresponding to the bottom of the vertical slide rail seat 24. The upper detection photoelectric device and the lower detection photoelectric device are arranged at the upper and lower ends of the vertical slide rail seat 24, respectively, for real-time monitoring of the position information of the tensioning roller 22. The upper detection photoelectric device and the lower detection photoelectric device use photoelectric sensors to detect the position change of the tensioning roller 22 by emitting and receiving light beams. When the tensioning roller 22 slides up and down, the light beam is interrupted or re-received, thereby generating a position signal, and transmitting the signal to the control system or controller.

[0052] The present invention effectively improves the automation control level of the tensioning mechanism 2 by setting the upper detection photoelectric and the lower detection photoelectric. The detection device can not only monitor the sliding position of the tensioning roller 22 in real time, but also provide timely feedback when an abnormality is found, ensuring that the tension of the film material 101 is always in the best state, avoiding the reduction of production efficiency and product quality problems caused by improper tension.

[0053] like Figure 6 As shown, specifically, the controller is electrically connected to the motors of each mechanism to drive the motor speed and forward and reverse rotation. When the upper detection photoelectric detection senses that the tensioning roller 22 sends a position signal, it means that the tension is large. The controller controls the discharge motor of the discharge mechanism 1 to switch to a preset high-speed gear to speed up the release speed of the film material 101, so that the tension returns to a normal state, prevents the film material 101 from being too tight, and maintains the smoothness of the feeding process.

[0054] When the lower detection photoelectric detection senses a position signal from the tensioning roller 22, it indicates that the tension is small. The controller controls the discharge motor of the discharge mechanism 1 to switch to a preset low-speed gear to reduce the release speed of the film material 101 and increase the tension of the film material 101 to avoid insufficient tension or unstable feeding due to excessive looseness of the film material 101.

[0055] The controller of the present invention can adjust the working state of the unloading motor according to the actual position of the tensioning roller 22, dynamically adjust the unloading speed, ensure that the tension of the film material 101 is always kept within the ideal range during the feeding process, avoid the instability of the production line caused by being too loose or too tight, and improve the efficiency and accuracy of the entire feeding system. At the same time, this also ensures the accuracy of the final bagging effect, the stability of the sealing strength and the appearance quality.

[0056] The present invention also provides a bagging machine, comprising the above-mentioned bagging machine feeding system, specifically a side-sealing bagging machine.

[0057] By using the feeding system, the bagging machine can press the film material through the tensioning roller that can move up and down during the release of the film material, and increase the tension of the film material through the weight of the tensioning roller, so as to avoid the film material being too loose and affecting the feeding smoothness of the entire feeding system, so as to ensure the accurate bagging length and avoid affecting the sealing strength and appearance.

[0058] In addition, it should be noted that the above-mentioned feeding mechanism adopts a servo motor, and its specific roller feeding method and structure have been disclosed in the prior art and are not the focus of the invention and will not be described in detail.

[0059] In a further embodiment, the bagging machine further comprises: a conveying mechanism 5, whose transmission path passes through the bagging area 50, and is used to transmit the bagging equipment, and the film material 101 delivered by the feeding mechanism 4 is put on the bagging equipment in the bagging area 50. The conveying mechanism 5 is mainly composed of a conveyor belt, a roller or a chain, etc., and is responsible for passing the air conditioner body or other equipment to be packaged through the bagging area 50, ensuring that the equipment receives the film material 101 at a suitable position and completes the automatic bagging process. The running speed of the conveying mechanism 5 is coordinated with the output speed of the feeding mechanism 4 to ensure that the film material 101 can be docked with the bagging equipment.

[0060] The present invention realizes the automatic air-conditioning bagging operation by setting the cooperation of the conveying mechanism 5 and the feeding mechanism 4. The transmission path of the conveying mechanism 5 passes through the bagging area 50, ensuring that the equipment is combined with the film material 101 at the appropriate time, avoiding the cumbersomeness and instability of manual operation. The film material 101 delivered by the feeding mechanism 4 and the equipment transmitted by the conveying mechanism 5 coordinate and cooperate, ensuring the efficiency and accuracy of packaging, and further improving the overall automation level and packaging quality of the production line.

[0061] Specifically, the conveying mechanism 5 includes: a conveying roller 51, a conveying belt line 52 and an in-place detection photoelectric 53. The conveying roller 51 is located in the bagging area 50, driven by the first conveying motor, and is used to deliver the bagging equipment to the bagging area 50, or to transmit the bagged equipment out of the bagging area 50. The conveying belt line 52 is located at the exit side of the bagging area 50, receives the bagging equipment transmitted by the conveying roller 51, and continues to transmit the equipment to the next process or packaging area of ​​the production line. The conveying belt line 52 is usually composed of a conveyor belt and a plurality of driving rollers, which can smoothly and efficiently transmit the equipment. The in-place detection photoelectric 53 is set at a position between the conveying roller 51 and the conveying belt line 52, and is used to detect the position signal of the bagging equipment in real time. When the bagging equipment reaches the predetermined position, the photoelectric sensor sends a signal and feeds it back to the control system. The control system determines whether the equipment is in place based on the signal, and adjusts the subsequent operation steps or starts the next process accordingly.

[0062] The present invention combines the conveying roller 51, the conveying belt line 52 and the in-place detection photoelectric 53 to ensure the accurate positioning and smooth flow of the bagging equipment in the entire conveying process. The use of the in-place detection photoelectric 53 enhances the accuracy of the automatic control, ensuring that the bagging equipment can accurately reach the bagging area 50 or the exit side, avoiding inaccurate bagging or stagnation in the conveying process due to position deviation. The efficient operation of the entire conveying system improves the automation level of the production line, reduces manual intervention, and improves production efficiency.

[0063] The specific control is as follows: when the in-place detection photoelectric 53 detects the position signal of the bagging equipment, the conveying motor of the conveying belt line 52 is controlled to run, and the feeding motor of the feeding mechanism 4 is controlled to start, so as to ensure the synchronous movement of the bagging equipment and the film material 101. Specifically, after detecting the position signal, the control system will immediately start the conveying belt line 52 and the feeding mechanism 4, at which time the film material 101 is sleeved on the equipment and pulled by the equipment. When the in-place detection photoelectric 53 loses the position signal of the bagging equipment, after a preset time t1, the control system will stop the operation of the conveying motor and the feeding motor. At this time, the film material 101 is in a tensioned state. At this time, if the two sides are directly pressed to hot-melt seal, the two sides of the film material 101 will pull the front film material 101 when they merge, which may cause insufficient welding strength due to insufficient hot-melt width of the pressed part.

[0064] Furthermore, after stopping operation, the control system (controller) will control the conveying motor to reverse for a preset time t2, in order to make the bagging device slightly return a certain distance. This reversal process allows a certain margin between the film material 101 and the bagging device (air conditioner), so that when the two sides of the film material 101 are merged, sufficient welding width can be guaranteed. It is worth noting that the preset time t2 must be less than or equal to t1, and the reversal speed is equal to the forward speed to ensure that the reversal operation does not cause the air conditioner to be detected by the in-place detection photoelectric 53 (i.e., just leave the position of the in-place detection photoelectric 53).

[0065] In order to ensure the sealing quality, an air-conditioning reverse function is added before the sealing cylinder is activated to ensure the film surplus at the sealing point and shape the film in the vertical direction at the same time, which can prevent sealing wrinkles and long and short legs.

[0066] Specifically, the feeding system of the bagging machine also includes a punching mechanism 3, which is arranged between the tensioning mechanism 2 and the feeding mechanism 4 and is located on the top surface of the box. After the film material 101 passes through the tensioning mechanism 2, it is processed by the punching mechanism 3 and then transmitted to the feeding mechanism 4. The structure of the punching mechanism 3 is relatively common in the prior art and is not described in detail. Its main function is to provide necessary holes for the film material 101, which is usually used to adjust the tension of the film material 101, or to provide ventilation holes, exhaust holes or other specific functional holes for the bag body during the bagging process. The design of these holes not only helps to adjust the physical properties of the film material 101, but also meets the air permeability or other functional requirements of the film material 101 during the packaging process.

[0067] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0068] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0069] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0070] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0071] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A feeding system for a bagging machine, characterized in that: Specifically include: The material unwinding mechanism is used to place the material roll and can drive the material roll to rotate and release the film material; The tensioning mechanism is provided with a plurality of support rollers for winding the film material in a fixed position, which are used to change the discharge direction of the film material, and a tensioning roller for winding the film material which can automatically adjust the position up and down, which is used to adjust the tension of the film material; The feeding mechanism receives the film material after passing through the tensioning mechanism and delivers the film material to the bagging area; The controller adjusts the speed at which the material film is released by the unloading mechanism according to the position signal of the tensioning roller.

2. The bagging machine feeding system according to claim 1, characterized in that: The tensioning mechanism specifically comprises: A roller bracket, wherein a first supporting roller and a second supporting roller are arranged in parallel at intervals on the roller bracket; A pair of vertical slide rail seats, mounted on the roller bracket and located below the position between the first support roller and the second support roller, the tension roller being mounted between the vertical slide rail seats, and the tension roller being able to slide up and down along the vertical slide rail seats; A detection device detects a position signal of the tensioning roller.

3. The bagging machine feeding system according to claim 2, characterized in that: The detection device comprises: an upper detection photoelectric device arranged corresponding to the top of the vertical slide rail seat; and a lower detection photoelectric device arranged corresponding to the bottom of the vertical slide rail seat.

4. The bagging machine feeding system according to claim 3, characterized in that: When the upper detection photoelectric detection senses that the tensioning roller sends a position signal, the controller controls the discharge motor of the discharge mechanism to switch to a preset high-speed gear.

5. The feeding system of the bagging machine as claimed in claim 3, characterized in that: When the lower detection photoelectric detection senses that the tensioning roller sends a position signal, the controller controls the discharge motor of the discharge mechanism to switch to a preset low speed gear.

6. A bagging machine, characterized in that: It comprises a bagging machine feeding system as described in any one of claims 1 to 5.

7. The bagging machine according to claim 6, characterized in that: Also includes: The conveying mechanism has a conveying path passing through the bagging area and is used to convey the bagging equipment. The film material delivered by the conveying mechanism is wrapped on the bagging equipment in the bagging area.

8. The bagging machine according to claim 7, characterized in that: The conveying mechanism comprises: A conveying roller, the end of which is located in the bagging area, is driven by a first conveying motor and is used to convey the conveying bagging device to the bagging area, or to convey the bagging device in the bagging area out; A conveyor belt line, located at the exit side of the bagging area, receives the bagging equipment sent out by the conveyor roller; The in-position detection photoelectric device is arranged between the conveying roller and the conveying belt line and is used to detect the position signal of the bagging equipment.

9. The bagging machine according to claim 8, characterized in that: When the in-place detection photoelectric device detects the position signal of the bagging equipment, the conveying motor of the conveyor belt line is controlled to run, and the feeding motor of the feeding mechanism is controlled to start. When the in-place detection photoelectric device loses the position signal of the bagging equipment, the conveying motor and the feeding motor are controlled to stop running after a preset time t1, and then the conveying motor is controlled to reverse for a preset time t2, and then the film material is hot-melted, and t2 is less than or equal to t1.

10. The bagging machine according to claim 6, characterized in that: It also includes a punching mechanism, which is arranged between the tensioning mechanism and the feeding mechanism. The film material passes through the tensioning mechanism, is punched by the punching mechanism, and then is transmitted to the feeding mechanism.

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