An automatic packaging machine

Abstract

The present invention discloses an automatic packaging machine, which includes a first input device, a bag opening device, a second input device, a material pushing device, a lifting device, a sealing device and an output device. The first input device is configured to input packaging bags along a first direction. The bag opening device is arranged on the side of the first input device. The second input device is configured to input materials to be packaged along a second direction. The second input device, the lifting device, the sealing device and the output device are arranged in sequence along the second direction. The material pushing device is arranged on the side of the second input device and the lifting device. The material pushing device includes: a second mounting frame, a fourth driving mechanism, and a material pushing mechanism; the material pushing mechanism includes an overload protection assembly, a material pushing member and a bag arranging assembly. The automatic packaging machine of the present invention can realize the automatic progress of multiple processes such as feeding, bag opening, lifting, material pushing, sealing and output, with high automation degree, good continuity and high production efficiency. The material pushing device adds an overload protection assembly and a bag arranging assembly to the traditional material pushing structure.

Description

Technical Field

[0001] The present invention relates to the field of packaging machinery and equipment, and particularly relates to an automatic packaging machine. Background Art

[0002] Packaging boxes or packaging cases are widely used. In order to meet application requirements, many packaging boxes or packaging cases need to be sleeved with flexible outer bags (usually plastic bags) outside the packaging boxes or packaging cases. For example, wine bottle packaging boxes, express delivery boxes, etc. Finally, a flexible outer bag needs to be sleeved to protect the surface of the packaging box from being scratched and at the same time has a dust-proof function.

[0003] The traditional method of sleeving bags for packaging boxes or packaging cases is manual operation. Workers manually put the packaging boxes or packaging cases into the flexible outer bags. This traditional bag-sleeving method is time-consuming and laborious, with low efficiency, and it is difficult to cooperate with the entire production line to form an automated system, which is not conducive to the intelligent, automated, and large-scale production of packaging boxes.

[0004] As shown in the Chinese utility model patent with the application number 202223613293 and the patent name "An Automatic Bag-Sleeving Machine", it includes: a machine body and devices arranged on the machine body: a bag-making device configured to provide packaging bags; a first conveying device configured to transport packaging bags; a bag-opening device located on the side of the first conveying device and configured to open the packaging bags; a second conveying device located on the side of the bag-opening device and configured to transport objects to be packaged; a pushing device located at the end of the second conveying device and cooperating with the bag-opening device, configured to push the objects to be packaged into the packaging bags opened by the bag-opening device; a bag-sealing device located on the side of the first conveying device and behind the bag-opening device, configured to seal the packaging bags containing the objects to be packaged; the conveying directions of the first conveying device and the second conveying device are parallel; the bag-opening device is installed between the first conveying device and the second conveying device. This equipment integrates a series of processes such as bag supply, bag opening, bag loading, and bag sealing, with high automation and high production efficiency.

[0005] Currently, many automated packaging machines with similar structures have emerged on the market. The principle of this packaging machine generally realizes automated bagging and sealing work through a bag-opening device, a pushing device, a belt conveyor, a heat-sealing device, etc. However, the pushing device of the existing automated packaging machine only has a single pushing function, that is, only the action of pushing the object to be packaged into the package, and then the heat-sealing device performs heat sealing. In the actual production process, it is found that this process is prone to problems such as poor heat-sealing quality and poor aesthetic appearance at the sealing position. Summary of the Invention

[0006] The purpose of the present invention is to provide an automatic packaging machine that can at least solve one of the above problems.

[0007] According to one aspect of the present invention, an automatic packaging machine is provided, which includes a first input device, a bag opening device, a second input device, a pushing device, a lifting device, a sealing device and an output device. The first input device is configured to input packaging bags along a first direction. The bag opening device is arranged on the side of the first input device. The second input device is configured to input objects to be packaged along a second direction. The second input device, the lifting device, the sealing device and the output device are arranged in sequence along the second direction. The pushing device is arranged on the side of the second input device and the lifting device.

[0008] The bag opening device is configured to open the bag mouth of the packaging bag conveyed by the first input device so that a receiving space is formed inside the packaging bag and transfer it to the front of the sealing device.

[0009] The lifting device is configured to lift the objects to be packaged conveyed from the second input device.

[0010] The pushing device is configured to push the objects to be packaged into the packaging bag after the bag mouth is opened to obtain semi-finished products.

[0011] The sealing device is configured to heat-seal the open end of the semi-finished product to obtain finished products.

[0012] The output device is configured to output the finished products.

[0013] The pushing device at least includes the following structures:

[0014] A second mounting frame;

[0015] A fourth driving mechanism, mounted on the second mounting frame;

[0016] A pushing mechanism, mounted on the fourth driving mechanism and cooperating with the objects to be packaged;

[0017] The fourth driving mechanism is used to drive the pushing mechanism to translate, and then push the objects to be packaged into the packaging bag.

[0018] The pushing mechanism at least includes:

[0019] An overload protection component, mounted on the fourth driving mechanism;

[0020] A third mounting frame, mounted on the overload protection component;

[0021] A pushing member, mounted on the third mounting frame and cooperating with the objects to be packaged;

[0022] A bag arranging component, mounted on the third mounting frame and cooperating with the packaging bag, and used to arrange the bag mouth of the packaging bag containing the objects to be packaged.

[0023] When the pushing member contacts the objects to be packaged and the pushing force of the pushing member is less than the resistance generated by the objects to be packaged, the overload protection component is triggered to work, and then the fourth driving mechanism stops working.

[0024] Accordingly, the present invention provides an automatic packaging machine with a brand-new structure. The working principle of the automatic packaging machine is as follows: The first input device inputs empty packaging bags, and the second input device inputs box-shaped products and other items to be packaged. The bag-opening device opens the bag mouth of the empty packaging bag and expands the packaging bag, and then transports it to the front of the sealing device for standby. At this time, the items to be packaged conveyed by the second input device are transported to the lifting device, and the lifting device lifts it. Then the pushing device works to push the items to be packaged into the opened packaging bag. The semi-finished product containing the items to be packaged is pushed by the pushing device onto the output device behind the sealing device, and the open end is located at the sealing position. At this time, the sealing device starts to work to heat-seal the open end to obtain a finished product, and the output device works to output the finished product.

[0025] The automatic packaging machine of the present invention can realize the automatic progress of multiple processes such as feeding, bag opening, lifting, pushing, sealing, and output, with high automation degree, good continuity, and high production efficiency.

[0026] More importantly, the automatic packaging machine of the present invention is provided with a pushing device with a brand-new structure. The pushing device adds an overload protection component and a bag-aligning component to the traditional pushing structure. The bag-aligning component can tidy up the bag mouth of the packaging bag after the pushing action is completed, facilitating the subsequent heat-sealing work, and can greatly improve the heat-sealing efficiency, heat-sealing quality, and product aesthetics; the overload protection component can trigger automatic shutdown for protection when the resistance generated by the items to be packaged is greater than the pushing force of the pushing member, that is, when the pushing member is in a loaded state, with strong functionality and good safety performance.

[0027] In some embodiments, the fourth driving mechanism includes a fourth servo driving assembly and a fifth guiding assembly. The fifth guiding assembly includes a fifth linear guide rail and a fifth slider;

[0028] The fourth servo driving assembly includes a fourth servo driving member, a fourth transmission belt, a fourth driving wheel, a fourth driven wheel, a first synchronizing shaft, a first synchronizing wheel, a second synchronizing wheel, and a first synchronous belt. The fourth servo driving member is installed on the second mounting bracket. The first synchronizing shaft and the second synchronizing wheel are rotatably installed on the second mounting bracket. The fourth driving wheel is sleeved on the output end of the fourth servo driving member. The fourth driven wheel is sleeved on the first end of the first synchronizing shaft and is in transmission connection with the fourth driving wheel through the fourth transmission belt. The first synchronizing wheel is sleeved on the second end of the first synchronizing shaft and is in transmission connection with the second synchronizing wheel through the first synchronous belt. The length extension direction of the first synchronous belt is consistent with the extension direction of the fifth linear guide rail. The pushing mechanism is installed on the first synchronous belt and the fifth slider, and the fifth slider is in sliding fit with the fifth linear guide rail.

[0029] In some embodiments, the pusher mechanism further includes a height adjustment component, the height adjustment component is mounted on the first synchronous belt and the fifth slider, and the overload protection component is mounted on the height adjustment component;

[0030] The height adjustment component includes a fourth mounting bracket, an adjustment handle, a fifth lead screw, a fifth nut, a sixth slider, and a sixth linear guide rail. The bottom of the fourth mounting bracket is respectively connected to the first synchronous belt and the fifth slider. The fifth lead screw and the sixth linear guide rail are mounted on the fourth mounting bracket. The adjustment handle is mounted on the upper end of the fifth lead screw. The fifth nut is sleeved on the outer periphery of the fifth lead screw and is connected to the overload protection component. The sixth slider is mounted on the overload protection component and is slidably engaged with the sixth linear guide rail.

[0031] In some embodiments, the overload protection component includes a fifth mounting plate, a seventh linear guide rail, a seventh slider, a second sensing member, and a second sensor. The fifth mounting plate is connected to the fifth nut and the sixth slider. The seventh linear guide rail is mounted on the fifth mounting plate. The seventh slider is mounted on the third mounting bracket and is slidably engaged with the seventh linear guide rail. The second sensor is mounted on the fifth mounting plate. The second sensing member is mounted on the third mounting bracket and is matched with the second sensor.

[0032] The length extension direction of the seventh linear guide rail is perpendicular to the length extension direction of the sixth linear guide rail.

[0033] In some embodiments, the bag arranging component includes a first driving member, a connecting block, a bag arranging member, a mounting block, a third synchronous pulley, a fourth synchronous pulley, a second synchronous belt, an eighth linear guide rail, and an eighth slider. The first driving member is mounted on the third mounting bracket. The third synchronous pulley and the fourth synchronous pulley are rotatably mounted on the third mounting bracket and are connected by the second synchronous belt. The bag arranging member is mounted on the mounting block. The mounting block is mounted on the second synchronous belt. The connecting block is connected to the mounting block. The first driving member is connected to the connecting block;

[0034] There are a pair of bag arranging members. The pair of bag arranging members are arranged oppositely and are respectively located on both sides of the pusher member. The pair of bag arranging members are respectively fixedly mounted on two different belt segments of the second synchronous belt through a pair of mounting blocks. The connecting block is connected to one of the mounting blocks;

[0035] The eighth linear guide rail is mounted on the third mounting bracket and is parallel to the second synchronous belt. The eighth slider is mounted on the mounting block and is slidably engaged with the eighth linear guide rail.

[0036] In some embodiments, the bag opening device includes a bag sucking device and a bag supporting device. The first input device is used to input empty packaging bags. The bag sucking device is used to open the bag mouth of the packaging bag. The bag supporting device is used to support the packaging bag and transfer the supported packaging bag to the front of the sealing device.

[0037] In some embodiments, the bag supporting device includes a first mounting bracket, a bag supporting mechanism, and a first driving mechanism. The first driving mechanism is mounted on the first mounting bracket, and the bag supporting mechanism is mounted on the first driving mechanism. There are a pair of bag supporting mechanisms which are distributed vertically, and the first driving mechanism is used to adjust the distance between the pair of bag supporting mechanisms.

[0038] The bag supporting mechanism includes a first mounting plate, a first servo driving assembly, a first guiding assembly, and a bag supporting component. The first mounting plate is mounted on the first driving mechanism, the first servo driving assembly and the first guiding assembly are mounted on the first mounting plate, and the bag supporting component is mounted on the first servo driving assembly and the first guiding assembly. There are a pair of bag supporting components which are arranged in sequence along the guiding direction of the first guiding assembly. The first servo driving assembly is used to adjust the distance between the pair of bag supporting components.

[0039] The first guiding assembly includes a first linear guide rail and a first slider.

[0040] The first servo driving assembly includes a first servo driving member, a first transmission belt, a first driving pulley, a first driven pulley, a first lead screw, and a first nut. The first lead screw is rotatably mounted on the first mounting plate and its length extension direction is the same as that of the first linear guide rail. The first driving pulley is sleeved on the output end of the first servo driving member, the first driven pulley is sleeved on one end of the first lead screw and is in transmission connection with the first driving pulley through the first transmission belt. The first nut is sleeved on the outer periphery of the first lead screw and is mounted on the bottom of the bag supporting component. The first slider is mounted on the bottom of the bag supporting component and is in sliding fit with the first linear guide rail.

[0041] The first driving mechanism includes a second servo driving assembly and a second guiding assembly. The second guiding assembly includes a second linear guide rail and a second slider. The second servo driving assembly includes a second servo driving member, a second transmission belt, a second driving pulley, a second driven pulley, a second lead screw, and a second nut. The second lead screw is rotatably mounted on the first mounting bracket and its length extension direction is the same as that of the second linear guide rail. The second driving pulley is sleeved on the output end of the second servo driving member, the second driven pulley is sleeved on one end of the second lead screw and is in transmission connection with the second driving pulley through the second transmission belt. The second nut is sleeved on the outer periphery of the second lead screw and is mounted on the bottom of the first mounting plate of one of the bag supporting mechanisms. The second slider is mounted on the bottom of the same first mounting plate and is in sliding fit with the second linear guide rail.

[0042] In some embodiments, the bag supporting device further includes a second driving mechanism and a third driving mechanism. The first mounting bracket is mounted on the second driving mechanism, and the second driving mechanism is used to drive the first mounting bracket to move in the front - rear direction.

[0043] The second driving mechanism includes a third mounting plate, a third driving member and a third guide assembly, the third guide assembly is mounted on the third mounting plate, the first mounting frame is mounted on the third guide assembly, the third driving member is mounted on the third mounting plate and the driving end is connected to the first mounting frame;

[0044] The third guide assembly includes a third linear guide rail and a third slider, the third linear guide rail is mounted on the third mounting plate, and the third slider is mounted on the bottom of the first mounting frame and is slidably engaged with the third linear guide rail;

[0045] The third mounting plate is mounted on a third driving mechanism, and the third driving mechanism is used to drive the third mounting plate to translate;

[0046] The third driving mechanism includes a fourth mounting plate, a third servo drive assembly and a fourth guide assembly, the third servo drive assembly and the fourth guide assembly are mounted on the fourth mounting plate, the third mounting plate is mounted on the third servo drive assembly and the fourth guide assembly, and the third servo drive assembly is used to drive the third mounting plate to translate along the guide direction of the fourth guide assembly;

[0047] The fourth guide assembly includes a fourth linear guide rail and a fourth slider;

[0048] The third servo drive assembly includes a third servo drive member, a third transmission belt, a third driving wheel, a third driven wheel, a third screw rod and a third nut. The third screw rod is rotatably mounted on the fourth mounting plate and its length extension direction is consistent with the extension direction of the fourth linear guide rail. The third driving wheel is sleeved on the output end of the third servo drive member, the third driven wheel is sleeved on one end of the third screw rod and is connected to the third driving wheel through the third transmission belt. The third nut is sleeved on the outer periphery of the third screw rod and is mounted on the bottom of the third mounting plate. The fourth slider is mounted on the bottom of the third mounting plate and slides with the fourth linear guide rail.

[0049] Therefore, the present invention provides a bag-holding device with a new structure. The working principle of the bag-holding device is as follows: after the packaging bag is transported to the designated position, the bag mouth is opened under the action of the bag suction device. At this time, the bag-holding device works, the bag-holding mechanism is inserted into the packaging bag, and the first driving mechanism drives one bag-holding mechanism away from the other bag-holding mechanism, or makes a pair of bag-holding mechanisms move away from each other in the up and down directions. The first servo driving component drives a pair of bag-holding components of each bag-holding mechanism away from each other, thereby opening the packaging bag and forming a cubic accommodating space in the bag, which can facilitate the subsequent placement of paper boxes or packaging boxes waiting for packaging.

[0050] The bag-opening device of the present invention can realize automatic bag opening of packaging bags. Compared with manual bag opening, it has high work efficiency and meets the needs of mass production. More importantly, it adopts a servo drive structure, has high precision and fast operation.

[0051] In some embodiments, the jacking device includes a second driving member and a lifting table. The second driving member is installed at the bottom of the lifting table, and the lifting table is arranged at the end of the second input device.

[0052] In some embodiments, the sealing device includes an upper heat-sealing mechanism and a lower heat-sealing mechanism. The lower heat-sealing mechanism is installed at the front end of the output device, and the upper heat-sealing mechanism is installed above the lower heat-sealing mechanism and the two cooperate with each other.

[0053] In some embodiments, the automatic packaging machine further includes a bag-making device. The bag-making device is arranged in front of the first input device and is configured to make packaging bags from film materials.

[0054] Advantages of the present invention:

[0055] 1. The automatic packaging machine of the present invention can realize the automatic progress of multiple processes such as feeding, bag opening, jacking, pushing, sealing, and output, with high automation degree, good continuity, and high production efficiency;

[0056] 2. Multiple processes are all driven by servo driving members, with high precision and high efficiency;

[0057] 3. The automatic packaging machine of the present invention is provided with a pushing device with a new structure. The pushing device adds an overload protection component and a bag-aligning component to the traditional pushing structure. The bag-aligning component can tidy the bag mouth of the packaging bag after the pushing action is completed, facilitating the subsequent heat-sealing work, and can greatly improve the heat-sealing efficiency, heat-sealing quality, and product aesthetics; the overload protection component can trigger automatic shutdown for protection when the resistance generated by the object to be packaged is greater than the pushing force of the pushing member, that is, when the pushing member is in a loaded state, with strong functionality and good safety performance;

[0058] 4. The pushing device is also provided with a height adjustment component, which is used to adjust the height of the pushing member to be applicable to the pushing of objects to be packaged with different height specifications, with strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a schematic perspective view of the automatic packaging machine according to an embodiment of the present invention;

[0060] Figure 2 is Figure 1 the schematic top view of the automatic packaging machine shown;

[0061] Figure 3 is Figure 1 the schematic perspective view of the automatic packaging machine shown with some frames omitted;

[0062] Figure 4 is Figure 3 the schematic perspective view of the bag-opening device of the automatic packaging machine shown;

[0063] Figure 5 For Figure 4 The three-dimensional structural schematic diagram of the bag-supporting device of the bag-opening device shown;

[0064] Figure 6 For Figure 5 The front-view structural schematic diagram of the bag-supporting device shown;

[0065] Figure 7 For Figure 1 The three-dimensional structural schematic diagram of one of the bag-supporting mechanisms of the bag-supporting device shown;

[0066] Figure 8 For Figure 1 The three-dimensional structural schematic diagram of the bag-supporting device with some structures omitted shown;

[0067] Figure 9 For Figure 8 The three-dimensional structural schematic diagram of the bag-supporting device with some more structures omitted shown;

[0068] Figure 10 For Figure 9 The three-dimensional structural schematic diagram of the bag-supporting device with some more structures omitted shown;

[0069] Figure 11 For Figure 3 The three-dimensional structural schematic diagram of the automatic packaging machine with some structures omitted shown;

[0070] Figure 12 For Figure 11 The three-dimensional structural schematic diagram of the material-pushing device of the automatic packaging machine shown;

[0071] Figure 13 For Figure 12 The three-dimensional structural schematic diagram of the material-pushing device from another angle shown;

[0072] Figure 14 For Figure 12 The three-dimensional structural schematic diagram of the material-pushing device with some structures omitted shown

[0073] Figure 15 For Figure 14 One of the three-dimensional structural schematic diagrams of the material-pushing device with some structures omitted described;

[0074] Figure 16 For Figure 14 Two of the three-dimensional structural schematic diagrams of the material-pushing device with some structures omitted described;

[0075] Figure 17 For Figure 16 The partial exploded structural schematic diagram of the material-pushing device shown

[0076] Figure 18 Schematic diagram of the three-dimensional structure of the lifting device of the automatic packaging machine shown Figure 11 in

[0077] Figures 1 - 18Reference numerals in the figure: 1 - First input device; 2 - Bag-opening device; 3 - Second input device; 4 - Pushing device; 5 - Lifting device; 6 - Sealing device; 7 - Output device; 8 - Bag-making device; 9 - Packaging bag; 10 - Machine frame; X - First direction; Y - Second direction; 21 - Bag-supporting device; 22 - Bag-sucking device; 41 - Second mounting bracket; 42 - Fourth driving mechanism; 43 - Pushing mechanism; 51 - Second driving member; 52 - Lifting table; 61 - Upper heat-sealing mechanism; 62 - Lower heat-sealing mechanism; 211 - First mounting bracket; 212 - Bag-supporting mechanism; 213 - First driving mechanism; 214 - Second driving mechanism; 215 - Third driving mechanism; 421 - Fourth servo driving assembly; 422 - Fifth guiding assembly; 431 - Third mounting bracket; 432 - Pushing member; 433 - Height-adjusting assembly; 434 - Bag-aligning assembly; 435 - Overload protection assembly; 2121 - First mounting plate; 2122 - First servo driving assembly; 2123 - First guiding assembly; 2124 - Bag-supporting assembly; 2125 - Induction assembly; 2131 - Second servo driving assembly; 2132 - Second guiding assembly; 2141 - Third mounting plate; 2142 - Third driving member; 2143 - Third guiding assembly; 2151 - Fourth mounting plate; 2152 - Third servo driving assembly; 2153 - Fourth guiding assembly; 4211 - Fourth servo driving member; 4212 - Fourth transmission belt; 4213 - Fourth driving pulley; 4214 - Fourth driven pulley; 4215 - First synchronizing shaft; 4216 - First synchronizing pulley; 4217 - Second synchronizing pulley; 4218 - First synchronous belt; 4221 - Fifth linear guide rail; 4222 - Fifth slider; 4331 - Fourth mounting bracket; 4332 - Adjusting handle; 4333 - Fifth lead screw; 4334 - Fifth nut; 4335 - Sixth slider; 4336 - Sixth linear guide rail; 4341 - First driving member; 4342 - Connecting block; 4343 - Bag-aligning member; 4344 - Mounting block; 4345 - Third synchronizing pulley; 4346 - Fourth synchronizing pulley; 4347 - Second synchronous belt; 4348 - Eighth linear guide rail; 4349 - Eighth slider; 4351 - Fifth mounting plate; 4352 - Seventh linear guide rail; 4353 - Seventh slider; 4354 - First sensing member; 4355 - First sensor; 2122a - First servo driving member; 2122b - First transmission belt; 2122c - First driving pulley; 2122d - First driven pulley; 2122e - First lead screw; 2122f - First nut; 2123a - First linear guide rail; 2123b - First slider; 2124a - Second mounting plate; 2124b - Bag-supporting member; 2125a - Second sensing member; 2125b - Second sensor; 2131a - Second servo driving member; 2131b - Second transmission belt; 2131c - Second driving pulley; 2131d - Second driven pulley; 2131e - Second lead screw; 2131f - Second nut; 2132a - Second linear guide rail;2132b - Second slider; 2143a - Third linear guide; 2143b - Third slider; 2153a - Fourth linear guide; 2153b - Fourth slider; 2152a - Third servo drive; 2152b - Third transmission belt; 2152c - Third driving pulley; 2152d - Third driven pulley; 2152e - Third lead screw; 2152f - Third nut.; Detailed implementation mode

[0078] The present invention will be further described in detail below with reference to the accompanying drawings.

[0079] Figures 1 - 18 Schematically shows an automatic packaging machine according to an embodiment of the present invention.

[0080] As Figures 1 - 18 As shown, the automatic packaging machine includes a machine frame 10 and a first input device 1, a bag opening device 2, a second input device 3, a pushing device 4, a lifting device 5, a sealing device 6 and an output device 7 installed on the machine frame 10.

[0081] The first input device 1 is configured to input a packaging bag 9 along the first direction X, the bag opening device 2 is arranged on the side of the first input device 1, the second input device 3 is configured to input the object to be packaged along the second direction Y, the second input device 3, the lifting device 5, the sealing device 6 and the output device 7 are arranged in sequence along the second direction Y, and the pushing device 4 is arranged on the side of the second input device 3 and the lifting device 5;

[0082] The bag opening device 2 is configured to open the bag mouth of the packaging bag 9 conveyed by the first input device 1 so that a receiving space is formed inside the packaging bag 9 and transfer it to the front of the sealing device 6;

[0083] The lifting device 5 is configured to lift the object to be packaged conveyed from the second input device 3;

[0084] The pushing device 4 is configured to push the object to be packaged into the packaging bag 9 with the bag mouth opened to obtain a semi-finished product;

[0085] The sealing device 6 is configured to heat-seal the open end of the semi-finished product to obtain a finished product;

[0086] The output device 7 is configured to output the finished product.

[0087] As Figure 4 As shown, the bag opening device 2 of the present embodiment includes a bag supporting device 21 and a bag sucking device 22. The first input device 1 is used to input an empty packaging bag 9, the bag sucking device 22 is used to open the bag mouth of the packaging bag 9, and the bag supporting device 21 is used to expand the packaging bag 9.

[0088] The first input device 1 of this embodiment can be a belt conveyor with suction holes, and the second input device 3 and the output device 7 can be ordinary belt conveyors. The bag suction device 22 can be an adsorption structure composed of an upper suction nozzle and a lower suction nozzle. The bag supporting device 21 is arranged on the side of the first input device 1 and can open the packaging bag 9 opened by the bag suction device 22, support it and transfer it to the next process.

[0089] As Figures 5 - 10 shown, the bag supporting device 21 of this embodiment includes a first mounting frame 211, a bag supporting mechanism 212 and a first driving mechanism 213. The first driving mechanism 213 is mounted on the first mounting frame 211, and the bag supporting mechanism 212 is mounted on the first driving mechanism 213. There are a pair of bag supporting mechanisms 212 which are distributed up and down, and the first driving mechanism 213 is used to adjust the distance between the pair of bag supporting mechanisms 212.

[0090] The bag supporting mechanism 212 includes a first mounting plate 2121, a first servo driving component 2122, a first guiding component 2123 and a bag supporting component 2124. The first mounting plate 2121 is mounted on the first driving mechanism 213, the first servo driving component 2122 and the first guiding component 2123 are mounted on the first mounting plate 2121, and the bag supporting component 2124 is mounted on the first servo driving component 2122 and the first guiding component 2123. There are a pair of bag supporting components 2124, and the pair of bag supporting components 2124 are arranged in sequence along the guiding direction of the first guiding component 2123. The first servo driving component 2122 is used to adjust the distance between the pair of bag supporting components 2124.

[0091] The first guiding component 2123 includes a first linear guide rail 2123a and a first slider 2123b.

[0092] The first servo driving component 2122 includes a first servo driving member 2122a, a first transmission belt 2122b, a first driving wheel 2122c, a first driven wheel 2122d, a first lead screw 2122e and a first nut 2122f. The first lead screw 2122e is rotatably mounted on the first mounting plate 2121 and its length extension direction is the same as the extension direction of the first linear guide rail 2123a. The first driving wheel 2122c is sleeved on the output end of the first servo driving member 2122a. The first driven wheel 2122d is sleeved on one end of the first lead screw 2122e and is in transmission connection with the first driving wheel 2122c through the first transmission belt 2122b. The first nut 2122f is sleeved on the outer periphery of the first lead screw 2122e and is mounted on the bottom of the bag supporting component 2124. The first slider 2123b is mounted on the bottom of the bag supporting component 2124 and is in sliding fit with the first linear guide rail 2123a.

[0093] The first driving mechanism 213 includes a second servo driving assembly 2131 and a second guiding assembly 2132. The second guiding assembly 2132 includes a second linear guide rail 2132a and a second slider 2132b. The second servo driving assembly 2131 includes a second servo driving member 2131a, a second transmission belt 2131b, a second driving pulley 2131c, a second driven pulley 2131d, a second lead screw 2131e and a second nut 2131f. The second lead screw 2131e is rotatably installed on the first mounting bracket 211 and its length extension direction is consistent with the extension direction of the second linear guide rail 2132a. The second driving pulley 2131c is sleeved on the output end of the second servo driving member 2131a. The second driven pulley 2131d is sleeved on one end of the second lead screw 2131e and is in transmission connection with the second driving pulley 2131c through the second transmission belt 2131b. The second nut 2131f is sleeved on the outer periphery of the second lead screw 2131e and is installed at the bottom of the first mounting plate 2121 of one of the bag-supporting mechanisms 212. The second slider 2132b is installed at the bottom of the same first mounting plate 2121 and is in sliding fit with the second linear guide rail 2132a. Thus, the working principle of the first driving mechanism 213 of the present invention is as follows: after the bag-supporting assembly 2124 is inserted into the packaging bag 9, the second servo driving member 2131a drives the second driving pulley 2131c to rotate, drives the second driven pulley 2131d to rotate through the second transmission belt 2131b, drives the second lead screw 2131e to rotate, drives the second nut 2131f to move along the second lead screw 2131e, and further drives the first mounting plate 2121 connected to the second nut 2131f and the bag-supporting assembly 2124 installed on the first mounting plate 2121 to move in a direction away from the other bag-supporting assembly 2124. At this time, the sliding fit between the second slider 2132b and the second linear guide rail 2132a plays a guiding role, completing the adjustment of the distance between the two bag-supporting assemblies 2124 and completing the bag-supporting work.

[0094] The bag-supporting assembly 2124 includes a second mounting plate 2124a and a bag-supporting member 2124b. The second mounting plate 2124a is connected to the first nut 2122f and the first slider 2123b. The bag-supporting member 2124b is installed on the second mounting plate 2124a and is matched with the packaging bag 9.

[0095] The bag-supporting mechanism 212 further includes an induction assembly 2125. The induction assembly 2125 includes a second induction member 2125a installed on the second mounting plate 2124a and a second inductor 2125b installed on the first mounting plate 2121 and matched with the second induction member 2125a. Thus, the operation precision can be improved and the stroke exceeding the range can be avoided.

[0096] The bag-opening device 21 also includes a second drive mechanism 214. The first mounting frame 211 is mounted on the second drive mechanism 214. The second drive mechanism 214 is used to drive the first mounting frame 211 to move forward and backward. Thus, the second drive mechanism 214 drives the first mounting frame 211 and the components mounted on the first mounting frame 211 to move forward and backward, completing the insertion action into the packaging bag 9 and the return action after the packaging bag 9 is removed.

[0097] The second driving mechanism 214 includes a third mounting plate 2141, a third driving member 2142 and a third guide assembly 2143. The third guide assembly 2143 is installed on the third mounting plate 2141. The first mounting frame 211 is installed on the third guide assembly 2143. The third driving member 2142 is installed on the third mounting plate 2141 and the driving end is connected to the first mounting frame 211.

[0098] The third guide assembly 2143 includes a third linear guide rail 2143a and a third slider 2143b. The third linear guide rail 2143a is mounted on the third mounting plate 2141. The third slider 2143b is mounted on the bottom of the first mounting frame 211 and slidably cooperates with the third linear guide rail 2143a.

[0099] The bag-opening device 21 further includes a third drive mechanism 215, to which the third mounting plate 2141 is mounted. The third drive mechanism 215 is configured to drive the third mounting plate 2141 to translate. Thus, the third drive mechanism 215 is configured to drive the third mounting plate 2141 and the components mounted thereon to translate together, thereby transferring the packaging bag 9 after it has been opened.

[0100] The third driving mechanism 215 includes a fourth mounting plate 2151, a third servo driving assembly 2152 and a fourth guide assembly 2153. The third servo driving assembly 2152 and the fourth guide assembly 2153 are installed on the fourth mounting plate 2151. The third mounting plate 2141 is installed on the third servo driving assembly 2152 and the fourth guide assembly 2153. The third servo driving assembly 2152 is used to drive the third mounting plate 2141 to translate along the guide direction of the fourth guide assembly 2153.

[0101] The fourth guide assembly 2153 includes a fourth linear guide rail 2153a and a fourth slider 2153b; the third servo drive assembly 2152 includes a third servo drive member 2152a, a third transmission belt 2152b, a third driving pulley 2152c, a third driven pulley 2152d, a third screw rod 2152e and a third nut 2152f. The third screw rod 2152e is rotatably mounted on the fourth mounting plate 2151 and its length extension direction is consistent with the extension direction of the fourth linear guide rail 2153a. The third driving wheel 2152c is mounted on the output end of the third servo driving component 2152a, the third driven wheel 2152d is mounted on one end of the third screw rod 2152e and is connected to the third driving wheel 2152c through the third transmission belt 2152b, the third nut 2152f is mounted on the outer periphery of the third screw rod 2152e and is installed on the bottom of the third mounting plate 2141, and the fourth slider 2153b is installed on the bottom of the third mounting plate 2141 and slides with the fourth linear guide rail 2153a.

[0102] In this embodiment, the first servo driver 2122a, the second servo driver 2131a and the third servo driver 2152a may be servo motors; and the third driver 2142 may be a cylinder.

[0103] The fourth mounting plate 2151 and the third mounting plate 2141 of this embodiment are installed parallel to the mounting surface. The first mounting frame 211 is an L-shaped bracket, the bottom portion of which is installed parallel to the mounting surface and the other portion is perpendicular to the bottom portion. The first mounting plate 2121 is installed perpendicular to the mounting surface.

[0104] The present invention provides a bag-holding device 21 with a novel structure. The working principle of the bag-holding device 21 is as follows: after the empty packaging bag 9 is transported to a designated location, the bag opening is opened by the bag suction device 22. At this time, the bag-holding device 21 is activated, the bag-holding member 2124b of the bag-holding mechanism 212 is inserted into the packaging bag 9, the first driving mechanism 213 drives one bag-holding mechanism 212 away from the other bag-holding mechanism 212, or drives a pair of bag-holding mechanisms 212 away from each other in the vertical direction, and the first servo driving component 2122 drives a pair of bag-holding components 2124 of each bag-holding mechanism 212 away from each other, thereby opening the packaging bag 9 and forming a cubical accommodation space in the bag, which can facilitate the subsequent placement of items such as cartons or packaging boxes.

[0105] The translation principle of the bag stretching device 21 in this embodiment is as follows: After the bag stretching action is completed, the third driving mechanism 215, and the third servo driving assembly 2152 includes a third servo driving member 2152a, a third transmission belt 2152b, a third driving pulley 2152c, a third driven pulley 2152d, a third lead screw 2152e, and a third nut 2152f. The third lead screw 2152e is rotatably installed on the fourth mounting plate 2151, and the extending direction of its length is consistent with the extending direction of the fourth linear guide 2153a. The third driving pulley 2152c is sleeved on the output end of the third servo driving member 2152a. The third driven pulley 2152d is sleeved on one end of the third lead screw 2152e and is in transmission connection with the third driving pulley 2152c through the third transmission belt 2152b. The third nut 2152f is sleeved on the outer periphery of the third lead screw 2152e and is installed at the bottom of the third mounting plate 2141. The fourth slider 2153b is installed at the bottom of the third mounting plate 2141 and is in sliding fit with the fourth linear guide 2153a.

[0106] The translation direction is consistent with the second direction Y of the second input device 3.

[0107] The bag opening device 2 of the present invention can realize the automatic bag opening operation of the packaging bag 9. Compared with manual bag opening, the work efficiency is high, which meets the requirements of mass production. More importantly, the servo drive structure is adopted, with high precision and fast operation.

[0108] As Figure 18 shown, the lifting device 5 in this embodiment includes a second driving member 51 and a lifting table 52. The second driving member 51 is installed at the bottom of the lifting table 52, and the lifting table 52 is arranged at the end of the second input device 3. The second driving member 51 can lift the lifting table 52, aiming to lift the object to be packaged to a certain height, so that the acting point of the pushing device 4 is exactly located at the middle position in the height direction of the object to be packaged, which is convenient for subsequent pushing.

[0109] As Figures 11 - 17 shown, the pushing device 4 in this embodiment includes a second mounting frame 41, a fourth driving mechanism 42, and a pushing mechanism 43. The second mounting frame 41 is installed on one side of the second input device 3. The fourth driving mechanism 42 is installed on the second mounting frame 41, and the pushing mechanism 43 is installed on the fourth driving mechanism 42;

[0110] The fourth driving mechanism 42 includes a fourth servo driving assembly 421 and a fifth guiding assembly 422. The fifth guiding assembly 422 includes a fifth linear guide 4221 and a fifth slider 4222;

[0111] The fourth servo drive assembly 421 includes a fourth servo drive 4211, a fourth drive belt 4212, a fourth driving pulley 4213, a fourth driven pulley 4214, a first synchronous shaft 4215, a first synchronous pulley 4216, a second synchronous pulley 4217, and a first synchronous belt 4218. The fourth servo drive 4211 is mounted on the second mounting bracket 41. The first synchronous shaft 4215 and the second synchronous pulley 4217 are rotatably mounted on the second mounting bracket 41. The fourth driving pulley 4213 is sleeved on the output end of the fourth servo drive 4211. The fourth driven pulley 4214 is sleeved on the first end of the first synchronous shaft 4215 and is drivingly connected to the fourth driving pulley 4213 through the fourth drive belt 4212. The first synchronous pulley 4216 is sleeved on the second end of the first synchronous shaft 4215 and is drivingly connected to the second synchronous pulley 4217 through the first synchronous belt 4218. The length extension direction of the first synchronous belt 4218 is the same as the extension direction of the fifth linear guide 4221. The material pushing mechanism 43 is mounted on the first synchronous belt 4218 and the fifth slider 4222. The fifth slider 4222 is slidably engaged with the fifth linear guide 4221.

[0112] The material pushing mechanism 43 includes a third mounting bracket 431, a material pushing member 432, and a height adjustment assembly 433. The height adjustment assembly 433 is mounted on the first synchronous belt 4218 and the fifth slider 4222. The third mounting bracket 431 is mounted on the height adjustment assembly 433. The material pushing member 432 is mounted on the third mounting bracket 431.

[0113] The height adjustment assembly 433 includes a fourth mounting bracket 4331, an adjustment handle 4332, a fifth lead screw 4333, a fifth nut 4334, a sixth slider 4335, and a sixth linear guide 4336. The bottom of the fourth mounting bracket 4331 is respectively connected to the first synchronous belt 4218 and the fifth slider 4222. The fifth lead screw 4333 and the sixth linear guide 4336 are mounted on the fourth mounting bracket 4331. The adjustment handle 4332 is mounted on the upper end of the fifth lead screw 4333. The fifth nut 4334 is sleeved on the outer periphery of the fifth lead screw 4333 and is connected to the third mounting bracket 431. The sixth slider 4335 is connected to the third mounting bracket 431 and is slidably engaged with the sixth linear guide 4336.

[0114] The function of the height adjustment assembly 433 is to adjust the height of the material pushing member 432 to be applicable to the pushing of packages to be packed with different height specifications, with strong applicability. The specific operation principle is as follows: Rotate the adjustment handle 4332 to drive the fifth lead screw 4333 to rotate, drive the fifth nut 4334 to slide along the fifth lead screw 4333, and then complete the movement of the third mounting bracket 431 in the height direction. The cooperation between the sixth slider 4335 and the sixth linear guide 4336 realizes the guiding.

[0115] As Figures 12 - 17As shown, the pusher mechanism 43 of this embodiment further includes an overload protection component 435 and a bag arranging component 434.

[0116] The overload protection component 435 is installed on the fourth driving mechanism 42. The third mounting bracket 431 is installed on the overload protection component 435. The bag arranging component 434 is installed on the third mounting bracket 431 and cooperates with the packaging bag 9 to arrange the opening of the packaging bag 9 containing the items to be packaged. When the pusher 432 contacts the item to be packaged and the pushing force of the pusher 432 is less than the resistance generated by the item to be packaged, the overload protection component 435 is triggered to work, thereby causing the fourth driving mechanism 42 to stop working.

[0117] The overload protection component 435 of this embodiment includes a fifth mounting plate 4351, a seventh linear guide 4352, a seventh slider 4353, a second sensing element 2125a and a second sensor 2125b. The fifth mounting plate 4351 is connected to the fifth nut 4334 and the sixth slider 4335. The seventh linear guide 4352 is installed on the fifth mounting plate 4351. The seventh slider 4353 is installed on the third mounting bracket 431 and is slidably engaged with the seventh linear guide 4352. The second sensor 2125b is installed on the fifth mounting plate 4351. The second sensing element 2125a is installed on the third mounting bracket 431 and cooperates with the second sensor 2125b.

[0118] The length extension direction of the seventh linear guide 4352 is perpendicular to the length extension direction of the sixth linear guide 4336.

[0119] The first sensor 4355 and the second sensor 2125b of this embodiment can be groove type proximity switches or photoelectric switches. The first sensing element 4354 and the second sensing element 2125a can be metal sheets matching the sensors.

[0120] The pushing device 4 of the present invention is also provided with an overload protection component 435. The overload protection component 435 can trigger an automatic shutdown for protection when the resistance generated by the object to be packaged is greater than the pushing force of the pushing member 432, that is, when the pushing member 432 is in a loaded state, it has strong functionality and good safety performance. The specific principle is that when the pushing member 432 acts on the object to be packaged, the resistance generated by the object to be packaged on the conveyor belt or other workbench (such as the lifting platform 52) is far greater than the resistance generated by the object to be packaged on the conveyor belt or other workbench (such as the lifting platform 52). The pushing force of the pushing member 432 is greater than that of the pushing member 432. At this time, the excess resistance after offsetting the pushing force will act on the pushing member 432, and the pushing member 432 will drive the third mounting bracket 431 to move backward, causing the first sensor 4355 to be unable to sense the first sensing member 4354. At this time, the first sensor 4355 will feed back the signal to the controller, and the controller will control the pushing device 4 to automatically stop. The cooperation between the seventh slider 4353 and the seventh linear guide rail 4352 plays a guiding role when the third mounting bracket 431 retreats.

[0121] The controller of this embodiment is not shown, and can specifically be a commonly used automation control device such as a PLC controller, a single-chip microcomputer, an industrial computer, etc.

[0122] The bag sorting assembly 434 of this embodiment includes a first driving member 4341, a connecting block 4342, a bag sorting member 4343, a mounting block 4344, a third synchronous wheel 4345, a fourth synchronous wheel 4346, a second synchronous belt 4347, an eighth linear guide rail 4348 and an eighth slider 4349. The first driving member 4341 is mounted on the third mounting frame 431. The third synchronous wheel 4345 and the fourth synchronous wheel 4346 are rotatably mounted on the third mounting frame 431 and the two are connected by a second synchronous belt 4347. The bag sorting member 4343 is mounted on the mounting block 4344, and the mounting block 4344 is mounted on the second synchronous belt 4347. The connecting block 4342 is connected to the mounting block 4344. The first driving member 4341 is connected to the connecting block 4342.

[0123] The bag sorting members 4343 are a pair, and the pair of bag sorting members 4343 are arranged opposite to each other and are respectively located on both sides of the pushing member 432. The pair of bag sorting members 4343 are fixedly mounted on two different belt pieces of the second synchronous belt 4347 through a pair of mounting blocks 4344. The connecting block 4342 is connected to one of the mounting blocks 4344.

[0124] The eighth linear guide rail 4348 is mounted on the third mounting bracket 431 and is parallel to the second synchronous belt 4347 . The eighth slider 4349 is mounted on the mounting block 4344 and is slidably engaged with the eighth linear guide rail 4348 .

[0125] The first driving member 4341, the second driving member 51, and the third driving member 2142 in this embodiment can all be cylinders, and the first servo driving member 2122a, the second servo driving member 2131a, the third servo driving member 2152a, and the fourth servo driving member 4211 can all be servo motors.

[0126] The working principle of the bag arranging assembly 434 of the present invention is as follows: After the pusher of the pushing mechanism 43 pushes the object to be packaged into the packaging bag 9, the bag arranging assembly 434 works. The first driving member 4341 extends, drives one mounting block 4344 and the bag arranging member 4343 mounted on this mounting block 4344 to move through the connecting block 4342. During this process, the second synchronous belt 4347 is driven to rotate, and then drives the other mounting block 4344 and the bag arranging member 4343 mounted on this mounting block 4344 to move. A pair of bag arranging members 4343 move away from each other under the rotation of the second synchronous belt 4347. During the running process of the bag arranging member 4343, the sliding fit between the eighth slider 4349 and the eighth linear guide 4348 plays a guiding role, making the running stable. During the process of a pair of bag arranging members 4343 moving away from each other, they move from the middle of the packaging bag 9 to both sides. When they contact the inner wall of the packaging bag 9, they will straighten and arrange the bag mouth of the packaging bag 9, facilitating subsequent sealing.

[0127] The working principle of the pushing device 4 in this embodiment is as follows: After the lifting device 5 lifts the object to be packaged in place, the fourth driving mechanism 42 works. The fourth servo driving member 4211 drives the fourth driving wheel 4213 to rotate, drives the fourth driven wheel 4214 to rotate through the fourth transmission belt 4212, drives the first synchronous shaft 4215 to rotate, drives the first synchronous wheel 4216 to rotate, drives the first synchronous belt 4218 to rotate, and then drives the pushing mechanism 43 mounted on the first synchronous belt 4218 to rotate. The pushing mechanism 43 realizes translation under the guiding action of the fifth guiding assembly 422, and the translation direction is the same as the second direction Y of the second input device 3.

[0128] As Figure 11 shown, the sealing device 6 includes an upper heat sealing mechanism 61 and a lower heat sealing mechanism 62. The lower heat sealing mechanism 62 is installed at the front end of the output device 7, and the upper heat sealing mechanism 61 is installed above the lower heat sealing mechanism 62 and the two cooperate with each other. The sealing device 6 is a commonly used heat sealing device on the market, and the specific structure will not be elaborated here.

[0129] The automatic packaging machine further includes a bag making device 8. The bag making device 8 is arranged in front of the first input device 1 and is configured to make the packaging bag 9 from film material. The bag making device 8 is a commonly used bag making device 8 on the market, and the specific structure will not be elaborated here.

[0130] The present invention provides an automatic packaging machine with a brand-new structure. The working principle of the automatic packaging machine is as follows: The first input device 1 inputs empty packaging bags 9, and the second input device 3 inputs box-shaped products and the items to be packaged. The bag-opening device 2 opens the bag mouth of the empty packaging bag 9 and expands the packaging bag 9, and then transports it to the front of the sealing device 6 for standby. At this time, the items to be packaged conveyed by the second input device 3 are transported to the lifting device 5. The lifting device 5 lifts it, and then the pushing device 4 operates to push the items to be packaged into the opened packaging bag 9. The semi-finished product filled with the items to be packaged is pushed by the action of the pushing device 4 onto the output device 7 behind the sealing device 6, and the open end is located at the sealing position. At this time, the sealing device 6 starts to work to heat-seal the open end to obtain the finished product, and the output device 7 operates to output the finished product.

[0131] The automatic packaging machine of the present invention can realize the automatic operation of multiple processes such as feeding, bag-opening, lifting, pushing, sealing, and outputting. It has a high degree of automation, good continuity, and high production efficiency.

[0132] In summary, the automatic packaging machine of the present invention has at least the following advantages:

[0133] 1. The automatic packaging machine of the present invention can realize the automatic operation of multiple processes such as feeding, bag-opening, lifting, pushing, sealing, and outputting. It has a high degree of automation, good continuity, and high production efficiency;

[0134] 2. Multiple processes are all driven by servo drive components, with high precision and high efficiency;

[0135] 3. The automatic packaging machine of the present invention is provided with a pushing device 4 with a brand-new structure. The pushing device 4 adds an overload protection component 435 and a bag-aligning component 434 to the traditional pushing structure. The bag-aligning component 434 can organize the bag mouth of the packaging bag 9 after the pushing action is completed, which is convenient for subsequent heat-sealing work, and can greatly improve the heat-sealing efficiency, heat-sealing quality, and product aesthetics; the overload protection component 435 can trigger an automatic shutdown for protection when the resistance generated by the items to be packaged is greater than the pushing force of the pusher 432, that is, when the pusher 432 is in a load state. It has strong functionality and good safety performance;

[0136] 4. The pushing device 4 is also provided with a height adjustment component 433, which is used to adjust the height of the pusher 432 to be applicable to the pushing of items to be packaged with different height specifications, and has strong applicability.

[0137] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An automatic packaging machine, comprising a first input device (1), a bag opening device (2), a second input device (3), a pushing device (4), a lifting device (5), a sealing device (6) and an output device (7). The first input device (1) is configured to input packaging bags (9) along a first direction (X). The bag opening device (2) is arranged on the side of the first input device (1). The second input device (3) is configured to input items to be packaged along a second direction (Y). The second input device (3), the lifting device (5), the sealing device (6) and the output device (7) are arranged in sequence along the second direction (Y). The pushing device (4) is arranged on the side of the second input device (3) and the lifting device (5). The bag opening device (2) is configured to open the bag mouth of the packaging bag (9) conveyed by the first input device (1) so as to form a receiving space inside the packaging bag (9) and transfer it to the front of the sealing device (6). The lifting device (5) is configured to lift the items to be packaged conveyed from the second input device (3). The pushing device (4) is configured to push the items to be packaged into the packaging bag (9) after the bag mouth is opened, obtaining a semi-finished product. The sealing device (6) is configured to heat-seal the open end of the semi-finished product to obtain a finished product. The output device (7) is configured to output the finished product. The pushing device (4) at least includes the following structures: A second mounting frame (41); A fourth driving mechanism (42), mounted on the second mounting frame (41); A pushing mechanism (43), mounted on the fourth driving mechanism (42) and cooperating with the items to be packaged; The fourth driving mechanism (42) is used to drive the pushing mechanism (43) to translate, thereby pushing the items to be packaged into the packaging bag (9). The pushing mechanism (43) at least includes: An overload protection component (435), mounted on the fourth driving mechanism (42); A third mounting frame (431), mounted on the overload protection component (435); A pushing member (432), mounted on the third mounting frame (431) and cooperating with the items to be packaged; A bag arranging component (434), mounted on the third mounting frame (431) and cooperating with the packaging bag (9), for arranging the bag mouth of the packaging bag (9) containing the items to be packaged; When the pushing member (432) contacts the items to be packaged and the pushing force of the pushing member (432) is less than the resistance generated by the items to be packaged, the overload protection component (435) is triggered to work, thereby causing the fourth driving mechanism (42) to stop working.

2. The automatic packaging machine according to claim 1, wherein The fourth driving mechanism (42) includes a fourth servo driving assembly (421) and a fifth guiding assembly (422). The fifth guiding assembly (422) includes a fifth linear guide rail (4221) and a fifth slider (4222). The fourth servo drive assembly (421) includes a fourth servo drive (4211), a fourth drive belt (4212), a fourth driving pulley (4213), a fourth driven pulley (4214), a first synchronizing shaft (4215), a first synchronizing pulley (4216), a second synchronizing pulley (4217), and a first timing belt (4218). The fourth servo drive (4211) is mounted on the second mounting bracket (41). The first synchronizing shaft (4215) and the second synchronizing pulley (4217) are rotatably mounted on the second mounting bracket (41). The fourth driving pulley (4213) is sleeved on the output end of the fourth servo drive (4211). The fourth driven pulley (4214) is sleeved on the first end of the first synchronizing shaft (4215) and is drivingly connected to the fourth driving pulley (4213) through the fourth drive belt (4212). The first synchronizing pulley (4216) is sleeved on the second end of the first synchronizing shaft (4215) and is drivingly connected to the second synchronizing pulley (4217) through the first timing belt (4218). The length extension direction of the first timing belt (4218) is the same as the extension direction of the fifth linear guide (4221). The material pushing mechanism (43) is mounted on the first timing belt (4218) and the fifth slider (4222). The fifth slider (4222) is slidably engaged with the fifth linear guide (4221).

3. The automatic packaging machine according to claim 2, characterized in that, The material pushing mechanism (43) further includes a height adjustment assembly (433). The height adjustment assembly (433) is mounted on the first timing belt (4218) and the fifth slider (4222). The overload protection assembly (435) is mounted on the height adjustment assembly (433). The height adjustment assembly (433) includes a fourth mounting bracket (4331), an adjustment handle (4332), a fifth lead screw (4333), a fifth nut (4334), a sixth slider (4335), and a sixth linear guide (4336). The bottom of the fourth mounting bracket (4331) is respectively connected to the first timing belt (4218) and the fifth slider (4222). The fifth lead screw (4333) and the sixth linear guide (4336) are mounted on the fourth mounting bracket (4331). The adjustment handle (4332) is mounted on the upper end of the fifth lead screw (4333). The fifth nut (4334) is sleeved on the outer periphery of the fifth lead screw (4333) and is connected to the overload protection assembly (435). The sixth slider (4335) is mounted on the overload protection assembly (435) and is slidably engaged with the sixth linear guide (4336).

4. The automatic packaging machine according to claim 3, characterized in that, The overload protection assembly (435) includes a fifth mounting plate (4351), a seventh linear guide rail (4352), a seventh slider (4353), a second sensor (2125a) and a second sensor (2125b); the fifth mounting plate (4351) is connected to the fifth nut (4334) and the sixth slider (4335); the seventh linear guide rail (4352) is mounted on the fifth mounting plate (4351); the seventh slider (4353) is mounted on the third mounting frame (431) and slidably cooperates with the seventh linear guide rail (4352); the second sensor (2125b) is mounted on the fifth mounting plate (4351); the second sensor (2125a) is mounted on the third mounting frame (431) and cooperates with the second sensor (2125b); The length extension direction of the seventh linear guide rail (4352) is perpendicular to the length extension direction of the sixth linear guide rail (4336).

5. The automatic packaging machine according to any one of claims 1-4, characterized in that, The bag sorting assembly (434) includes a first driving member (4341), a connecting block (4342), a bag sorting member (4343), a mounting block (4344), a third synchronous wheel (4345), a fourth synchronous wheel (4346), a second synchronous belt (4347), an eighth linear guide rail (4348) and an eighth slider (4349), wherein the first driving member (4341) is mounted on the third mounting frame (431), the third synchronous wheel (4345) and the fourth synchronous wheel (4346) are rotatably mounted on the third mounting frame (431) and the two are connected by the second synchronous belt (4347), the bag sorting member (4343) is mounted on the mounting block (4344), the mounting block (4344) is mounted on the second synchronous belt (4347), the connecting block (4342) is connected to the mounting block (4344), and the first driving member (4341) is connected to the connecting block (4342); The bag sorting parts (4343) are a pair, and the pair of bag sorting parts (4343) are arranged opposite to each other and are respectively located on both sides of the pushing part (432). The pair of bag sorting parts (4343) are respectively fixedly installed on two different belt pieces of the second synchronous belt (4347) through a pair of mounting blocks (4344), and the connecting block (4342) is connected to one of the mounting blocks (4344); The eighth linear guide rail (4348) is mounted on the third mounting frame (431) and is parallel to the second synchronous belt (4347), and the eighth slider (4349) is mounted on the mounting block (4344) and is slidably engaged with the eighth linear guide rail (4348).

6. The automatic packaging machine according to any one of claims 1-4, characterized in that, The bag opening device (2) comprises a bag suction device (22) and a bag support device (21), wherein the first input device (1) is used to input an empty packaging bag (9), the bag suction device (22) is used to open the bag opening of the packaging bag (9), and the bag support device (21) is used to support the packaging bag (9) and transfer the supported packaging bag (9) to the front of the sealing device (6).

7. The automatic packaging machine according to claim 6, characterized in that, The bag-holding device (21) comprises a first mounting frame (211), a bag-holding mechanism (212) and a first driving mechanism (213); the first driving mechanism (213) is mounted on the first mounting frame (211); the bag-holding mechanism (212) is mounted on the first driving mechanism (213); the bag-holding mechanisms (212) are a pair and are distributed up and down; the first driving mechanism (213) is used to adjust the distance between the pair of bag-holding mechanisms (212); The bag-holding mechanism (212) comprises a first mounting plate (2121), a first servo drive assembly (2122), a first guide assembly (2123) and a bag-holding assembly (2124); the first mounting plate (2121) is mounted on the first drive mechanism (213); the first servo drive assembly (2122) and the first guide assembly (2123) are mounted on the first mounting plate (2121); the bag-holding assembly (2124) is mounted on the first servo drive assembly (2122) and the first guide assembly (2123); the bag-holding assembly (2124) is a pair, and the pair of bag-holding assemblies (2124) are sequentially arranged along the guide direction of the first guide assembly (2123); the first servo drive assembly (2122) is used to adjust the distance between the pair of bag-holding assemblies (2124); The first guide assembly (2123) includes a first linear guide rail (2123a) and a first slider (2123b); The first servo drive assembly (2122) includes a first servo drive member (2122a), a first transmission belt (2122b), a first driving wheel (2122c), a first driven wheel (2122d), a first screw rod (2122e) and a first nut (2122f). The first screw rod (2122e) is rotatably mounted on the first mounting plate (2121) and its length extension direction is consistent with the extension direction of the first linear guide rail (2123a). The first driving wheel (2122c) is sleeved on the first servo drive member. (2122a), the first driven wheel (2122d) is mounted on one end of the first screw rod (2122e) and is connected to the first driving wheel (2122c) through the first transmission belt (2122b), the first nut (2122f) is mounted on the outer periphery of the first screw rod (2122e) and is installed at the bottom of the bag support assembly (2124), and the first slider (2123b) is installed at the bottom of the bag support assembly (2124) and is slidably matched with the first linear guide rail (2123a); The first driving mechanism (213) includes a second servo driving assembly (2131) and a second guiding assembly (2132). The second guiding assembly (2132) includes a second linear guide rail (2132a) and a second slider (2132b). The second servo driving assembly (2131) includes a second servo driving member (2131a), a second transmission belt (2131b), a second driving wheel (2131c), a second driven wheel (2131d), a second lead screw (2131e) and a second nut (2131f). The second lead screw (2131e) is rotatably installed on the first mounting bracket (211), and the extending direction of its length is consistent with the extending direction of the second linear guide rail (2132a). The second driving wheel (2131c) is sleeved on the output end of the second servo driving member (2131a). The second driven wheel (2131d) is sleeved on one end of the second lead screw (2131e) and is in transmission connection with the second driving wheel (2131c) through the second transmission belt (2131b). The second nut (2131f) is sleeved on the outer circumference of the second lead screw (2131e) and is installed at the bottom of the first mounting plate (2121) of one of the bag supporting mechanisms (212). The second slider (2132b) is installed at the bottom of the same first mounting plate (2121) and is in sliding fit with the second linear guide rail (2132a).

8. The automatic packaging machine according to claim 7, characterized in that, The bag supporting device (21) further includes a second driving mechanism (214) and a third driving mechanism (215). The first mounting bracket (211) is installed on the second driving mechanism (214), and the second driving mechanism (214) is used to drive the first mounting bracket (211) to move in the front-back direction; The second driving mechanism (214) includes a third mounting plate (2141), a third driving member (2142) and a third guiding assembly (2143). The third guiding assembly (2143) is installed on the third mounting plate (2141). The first mounting bracket (211) is installed on the third guiding assembly (2143). The third driving member (2142) is installed on the third mounting plate (2141), and the driving end is connected to the first mounting bracket (211); The third guiding assembly (2143) includes a third linear guide rail (2143a) and a third slider (2143b). The third linear guide rail (2143a) is installed on the third mounting plate (2141). The third slider (2143b) is installed at the bottom of the first mounting bracket (211) and is in sliding fit with the third linear guide rail (2143a); The third mounting plate (2141) is installed on the third driving mechanism (215), and the third driving mechanism (215) is used to drive the third mounting plate (2141) to translate; The third driving mechanism (215) includes a fourth mounting plate (2151), a third servo driving assembly (2152) and a fourth guiding assembly (2153). The third servo driving assembly (2152) and the fourth guiding assembly (2153) are mounted on the fourth mounting plate (2151). The third mounting plate (2141) is mounted on the third servo driving assembly (2152) and the fourth guiding assembly (2153). The third servo driving assembly (2152) is configured to drive the third mounting plate (2141) to translate along the guiding direction of the fourth guiding assembly (2153). The fourth guiding assembly (2153) includes a fourth linear guide rail (2153a) and a fourth slider (2153b). The third servo driving assembly (2152) includes a third servo driving member (2152a), a third transmission belt (2152b), a third driving pulley (2152c), a third driven pulley (2152d), a third lead screw (2152e) and a third nut (2152f). The third lead screw (2152e) is rotatably mounted on the fourth mounting plate (2151) and its length extension direction is consistent with the extension direction of the fourth linear guide rail (2153a). The third driving pulley (2152c) is sleeved on the output end of the third servo driving member (2152a). The third driven pulley (2152d) is sleeved on one end of the third lead screw (2152e) and is in transmission connection with the third driving pulley (2152c) through the third transmission belt (2152b). The third nut (2152f) is sleeved on the outer periphery of the third lead screw (2152e) and is mounted on the bottom of the third mounting plate (2141). The fourth slider (2153b) is mounted on the bottom of the third mounting plate (2141) and is in sliding fit with the fourth linear guide rail (2153a).

9. The automatic packaging machine according to any one of claims 1-4, characterized in that The sealing device (6) includes an upper heat sealing mechanism (61) and a lower heat sealing mechanism (62). The lower heat sealing mechanism (62) is mounted at the front end of the output device (7). The upper heat sealing mechanism (61) is mounted above the lower heat sealing mechanism (62) and the two cooperate with each other.

10. The automatic packaging machine according to any one of claims 1-4, characterized in that, It further includes a bag making device (8). The bag making device (8) is arranged in front of the first input device (1) and is configured to make a packaging bag (9) from a film material.

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