Winding device of packaging machine

Abstract

The invention relates to the technical field of packaging machines, and discloses a winding device of a packaging machine, the winding device comprises a rack, a film winding mechanism used for winding film excess materials is arranged on the rack, and the film winding mechanism comprises a first supporting plate arranged on the rack; a film collecting roller and a first driving source used for driving the film collecting roller to rotate are rotationally connected to the first supporting plate, and a transmission assembly used for achieving power transmission between the first driving source and the film collecting roller is arranged on the first supporting plate; the first driving source comprises an output shaft, the transmission assembly comprises a linkage shell fixedly connected with the output shaft, a containing cavity is formed in the linkage shell, and a rotating shaft capable of being inserted into the containing cavity is arranged on one side of the film collecting roller. And a driven disc connected outside the rotating shaft in a sleeving mode, a driving block synchronously rotating with the linkage shell and an elastic piece used for driving the driving block to abut against the driven disc are arranged in the containing cavity, friction transmission is adopted for the driving block and the driven disc, and the effect of reducing the fault probability of the packaging machine is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of packaging machines, and in particular to a winding device of a packaging machine. Background Art

[0002] Packaging machines are used to package products and are mainly used in food, medicine and other industries.

[0003] A packaging machine in the related art includes a frame, on which is disposed a film-receiving device for rewinding residual film, the film-receiving device including a film-receiving roller and a motor for driving the film-receiving roller to rotate.

[0004] The film and the product are heat-sealed in the packaging machine, and the film is cut. However, the remaining film after cutting is narrow, which limits the tensile force that the remaining film can withstand.

[0005] When the film winding device winds up the remaining film, the winding roller winds up the remaining film and gradually tightens the film. When the film is tightened, the winding roller continues to wind up the film. When the pulling force of the winding roller on the remaining film exceeds the upper limit of the remaining film, the remaining film is easily broken, and even affects the operation of the packaging machine. Summary of the invention

[0006] In order to reduce the probability of a packaging machine malfunctioning when a film is being rolled up, the present application provides a rolling device for a packaging machine.

[0007] The present application provides a winding device for a packaging machine, which adopts the following technical solution: A winding device of a packaging machine comprises a frame, wherein a film winding mechanism for winding up residual film is arranged on the frame, and the film winding mechanism comprises a first support plate arranged on the frame, a film winding roller and a first driving source for driving the film winding roller to rotate are rotatably connected to the first support plate, and a transmission component for realizing power transmission between the first driving source and the film winding roller is arranged on the first support plate; the first driving source comprises an output shaft, and the transmission component comprises a linkage shell fixedly connected to the output shaft, and a accommodating cavity is provided in the linkage shell, and a rotating shaft that can be inserted into the accommodating cavity is arranged on one side of the film winding roller, and a driven disk sleeved outside the rotating shaft, an active block that rotates synchronously with the linkage shell, and an elastic member for driving the active block to press against the driven disk are arranged in the accommodating cavity, and the active block and the driven disk adopt friction transmission.

[0008] By adopting the above technical scheme, the first driving source drives the linkage shell to rotate through the output shaft, and the active block rotates synchronously with the linkage shell. Since the elastic member drives the active block to press against the driven disk, the active block drives the driven disk, the rotating shaft and the film-receiving roller to rotate together, so that the film-receiving roller rewinds the residual film; when the residual film between the film-receiving roller and the heat-sealing mechanism of the equipment is in an untensioned state, the resistance of the film-receiving roller to rewind the residual film is small, and the motor can easily drive the film-receiving roller to perform the film-receiving action through the transmission component. When the residual film between the film-receiving roller and the heat-sealing mechanism of the equipment is in a tensioned state, the resistance of the film-receiving roller to rewind the residual film is large, and the first driving source drives the active block to rotate, and the active block will slip when performing friction transmission on the driven disk, that is, the driven disk and the film-receiving roller do not rotate, thereby avoiding the residual film from breaking due to winding, and reducing the probability of malfunction of the packaging machine.

[0009] Optionally, a limiting rod is provided on the inner wall of the accommodating cavity, the length direction of the limiting rod is consistent with the axis of the rotating shaft, the active block is assembled on the limiting rod, and the active block can move along the length direction of the limiting rod.

[0010] By adopting the above technical solution, the limit rod is matched with the active block, so that the active block, the limit rod and the linkage housing can rotate synchronously.

[0011] Optionally, the transmission assembly is provided with an adjustment assembly for adjusting the friction force between the active block and the driven disk, the inner wall of the accommodating cavity is provided with a fixing groove, the inner wall of the fixing groove away from the opening is provided with a fixing hole, the adjustment assembly includes an adjustment disk arranged in the accommodating cavity and an adjustment rod rotatably connected to the fixing hole, the adjustment rod is threadedly connected to the adjustment disk, the adjustment disk is located on a side of the elastic member away from the active block, the side of the elastic member away from the active block abuts against the adjustment disk, and the adjustment disk is provided with a second clamping hole for the limit rod to pass through.

[0012] By adopting the above technical solution, the limiting rod passes through the second clamping hole to limit the adjusting disk, so that the adjusting disk cannot rotate relative to the linkage housing; because the adjusting rod is limited along the axial direction and the adjusting rod is limited by the limiting rod and cannot rotate, the rotation of the adjusting rod drives the adjusting disk to move along the axial direction of the adjusting rod, so that the adjusting disk and the active block are close to or away from each other, and the elastic member between the adjusting disk and the active block is deformed, so as to adjust the force of the elastic member on the active block, that is, adjust the force of the active block on the driven disk.

[0013] Optionally, a limiting ring located in a fixing groove is provided on an outer circumferential surface of the adjusting rod, and an external thread of the adjusting rod is connected to a locking nut located outside the linkage housing.

[0014] By adopting the above technical solution, the limiting ring is in the fixing groove, and the limiting ring contacts the bottom wall of the fixing groove to prevent the adjusting rod from detaching from the linkage housing. The limiting ring cooperates with the locking nut to prevent the adjusting rod from moving along the axial direction of the fixing hole.

[0015] Optionally, the elastic member is a spring, and a limiting groove for inserting the spring is provided on the adjusting disk and / or the active block.

[0016] By adopting the above technical solution, the spring is inserted into the limiting groove, and when the spring is deformed or reset, the limiting groove plays a limiting role on the spring.

[0017] Optionally, the elastic member is a spring, which is arranged between the adjusting disk and the active block, and the spring is sleeved outside the limiting rod.

[0018] By adopting the above technical solution, the spring is sleeved outside the limiting rod, and the limiting rod has a limiting effect on the spring.

[0019] Optionally, an oil filling hole communicating with the accommodating cavity is provided on the outer circumferential surface of the linkage housing, and a plug is provided in the oil filling hole.

[0020] By adopting the above technical solution, oil can be injected into the linkage housing through the oil injection hole, thereby reducing the wear of the active block and the driven disc.

[0021] Optionally, the frame includes a first support seat and a second support seat parallel to each other, a broken film detection mechanism is provided on the first support seat, a first vertical hole is opened on the end face of the first support seat facing the second support seat, and the broken film detection mechanism includes mounting plates respectively arranged on the inner walls of the first vertical hole along the width direction of the frame, a first conductive rod and a second conductive rod are rotatably connected between the two mounting plates, the first conductive rod is located on the side of the second conductive rod away from the film collecting mechanism, a mounting wheel is rotatably connected to the outside of the first conductive rod, a conductive sheet is provided on the outer circumferential surface of the mounting wheel, an end of the conductive sheet away from the mounting wheel is higher than the highest point of the second conductive rod, the second conductive rod is located on the rotation path of the conductive sheet, a mounting sheet is provided on the outer circumferential surface of the mounting wheel, and when the mounting sheet rotates due to the influence of film residue, the conductive sheet does not contact the second conductive rod.

[0022] By adopting the above technical solution, when the residual film passes under the film break detection mechanism and is rolled up by the film winding roller, the mounting plate is lifted due to the support of the residual film, so that the conductive plate is no longer in contact with the second conductive rod, and the film break feedback is not triggered at this time; when the residual film breaks, the residual film no longer applies force to the mounting plate, and the mounting plate drops due to its own gravity until the conductive plate conflicts with the second conductive rod. At this time, the first conductive rod and the second conductive rod are electrically connected through the conductive plate, and the film break feedback is triggered.

[0023] Optionally, an arc-shaped piece is provided at the end of the mounting piece away from the mounting wheel.

[0024] By adopting the above technical solution, the arc surface of the arc sheet contacts with the film residue, which reduces the friction between the arc sheet and the film residue, making the film residue less likely to break during transmission, thereby improving the production efficiency of the equipment.

[0025] Optionally, the film collecting mechanism is arranged on the first support seat, and the second support seat is provided with a film releasing mechanism, the film releasing mechanism includes a second support plate connected to the second support seat, a film releasing roller is rotatably connected to the second support plate, and a second driving source for driving the film releasing roller to rotate is provided on the second support plate.

[0026] By adopting the above technical solution, the second driving source is started, and the second driving source drives the film-releasing roller to rotate, and the film-releasing roller releases the film.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. The first driving source drives the linkage housing to rotate through the output shaft, and the active block rotates synchronously with the linkage housing. Since the elastic member drives the active block to press against the driven disk, the active block drives the driven disk, the rotating shaft and the film-receiving roller to rotate together, so that the film-receiving roller rewinds the remaining film material; when the remaining film material between the film-receiving roller and the heat-sealing mechanism of the equipment is in an untensioned state, the resistance of the film-receiving roller to rewind the remaining film material is small, and the motor can easily drive the film-receiving roller to perform the film-receiving action through the transmission component; when the remaining film material between the film-receiving roller and the heat-sealing mechanism of the equipment is in a tensioned state, the resistance of the film-receiving roller to rewind the remaining film material is large, and the first driving source drives the active block to rotate, and the active block will slip when performing friction transmission on the driven disk, that is, the driven disk and the film roller do not rotate, thereby preventing the remaining film material from breaking due to winding, thereby reducing the probability of failure of the packaging machine; 2. When the film breaks, the broken film detection mechanism can detect the broken film in time and send an alarm to the staff. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 1 It is a schematic diagram of the structure of the whole packaging machine; Figure 2 It is a schematic diagram of the local structure highlighting the film collecting mechanism; Figure 3 It is a schematic diagram highlighting the partial structure of the broken film detection mechanism; Figure 4 is along Figure 3 Partial cross-sectional view along line AA; Figure 5 It is a partial exploded view highlighting the transmission components; Figure 6 It is a partial exploded view highlighting the adjustment component.

[0030] Figure numerals: 1, frame; 11, first support seat; 111, vertical hole; 12, second support seat; 2, film collection mechanism; 21, first support plate; 211, mounting hole; 212, mounting tube; 213, bearing; 22, film collection roller; 221, rotating shaft; 23, first driving source; 231, motor; 232, reducer body; 2321, reducer housing; 2322, output shaft; 2323, output flange; 24, transmission assembly; 241, linkage housing; 2411, accommodating cavity; 2412, accommodating hole; 2413, card slot; 2414, oil filling hole; 242, linkage cover; 2421, fixing slot; 2 422, fixing hole; 243, active block; 2431, limiting groove; 2432, first clamping hole; 244, driven disk; 245, elastic member; 246, adjusting assembly; 2461, adjusting rod; 2462, adjusting disk; 2463, locking nut; 2464, second clamping hole; 2465, limiting ring; 247, limiting rod; 3, film placing mechanism; 31, second supporting plate; 32, film placing roller; 33, second driving source; 4, film break detection mechanism; 41, mounting plate; 42, first conductive rod; 43, second conductive rod; 44, mounting rod; 45, conductive sheet; 46, mounting sheet; 461, arc sheet; 47, mounting wheel. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-6 This application is described in further detail.

[0032] This embodiment discloses a winding device of a packaging machine. Figure 1 A winding device of a packaging machine includes a frame 1, the frame 1 includes a first support seat 11 and a second support seat 12, and the first support seat 11 and the second support seat 12 are parallel to each other.

[0033] Reference Figure 1 and Figure 2 The first support seat 11 is provided with a film collection mechanism 2, which is used to roll up the remaining film from the cutting process. The film collection mechanism 2 includes a first support plate 21, a film collection roller 22, a first driving source 23 and a transmission assembly 24.

[0034] Reference Figure 1 and Figure 3The first support plate 21 is fixedly connected to the end surface of the first support seat 11 away from the second support seat 12. The end surface of the first support plate 21 along the width direction of the frame 1 is provided with a mounting hole 211. A mounting pipe 212 is inserted into the mounting hole 211.

[0035] Reference Figure 3 and Figure 4 The film-collecting roller 22 is arranged on one side of the first support plate 21 along the width direction of the frame 1, and the end surface of the film-collecting roller 22 facing the first support plate 21 is fixedly connected with a rotating shaft 221, and the rotating shaft 221 passes through the mounting tube 212 and extends to the side of the first support plate 21 away from the film-collecting roller 22. A bearing 213 is arranged in the mounting tube 212, and the bearing 213 is sleeved outside the rotating shaft 221.

[0036] Reference Figure 2 and Figure 4 The first driving source 23 is used to drive the film-collecting roller 22 to rotate. The first driving source 23 is disposed on a side of the first supporting plate 21 away from the film-collecting roller 22. The first driving source 23 includes a motor 231 and a reducer body 232.

[0037] Reference Figure 2 and Figure 4 The motor 231 is connected to the reducer body 232 to reduce the speed of the motor 231. The reducer body 232 includes a reducer housing 2321, an output shaft 2322 and an output flange 2323.

[0038] Reference Figure 4 The reducer housing 2321 is fixedly connected to the side of the mounting tube 212 away from the film-collecting roller 22. The output shaft 2322 is rotatably connected to the reducer housing 2321, and the output shaft 2322 is tubular and sleeved outside the rotating shaft 221. The outer circumferential surface of the output shaft 2322 is fixedly connected to the output flange 2323, and the output flange 2323 is located on the side of the reducer housing 2321 away from the first support plate 21.

[0039] Reference Figure 4 and Figure 5 The transmission assembly 24 is located on a side of the reducer housing 2321 away from the first support plate 21 , and the transmission assembly 24 is disposed on the output flange 2323 .

[0040] Reference Figure 5 and Figure 6 The transmission assembly 24 includes a linkage housing, an active block 243, a driven disk 244, an elastic member 245 and an adjustment assembly 246. The linkage housing includes a linkage shell 241 and a linkage cover 242.

[0041] Reference Figure 5 and Figure 6The linkage housing 241 is fixedly connected to the output flange 2323. The end surface of the linkage housing 241 away from the output flange 2323 is provided with an accommodation cavity 2411. The bottom wall of the accommodation cavity 2411 is provided with an accommodation hole 2412. The accommodation hole 2412 can allow the rotating shaft 221 to pass through.

[0042] Reference Figure 5 and Figure 6 The linkage cover 242 is fixedly connected to the side of the linkage housing 241 away from the output flange 2323, and the linkage cover 242 blocks the accommodating cavity 2411. A fixing groove 2421 is provided on the side of the linkage cover 242 facing the accommodating hole 2412, and a fixing hole 2422 is provided on the inner wall of the fixing groove 2421 away from the opening. The fixing groove 2421, the fixing hole 2422 and the accommodating hole 2412 are coaxially arranged. Both the fixing groove 2421 and the fixing hole 2422 can allow the rotating shaft 221 to pass through.

[0043] Reference Figure 5 and Figure 6 , the active block 243, the driven disk 244, and the elastic member 245 are all arranged in the accommodating chamber 2411. The driven disk 244 is sleeved outside the rotating shaft 221. The active block 243 is located on the side of the driven disk 244 away from the accommodating hole 2412. In this embodiment, the active block 243 is set in a disk shape, and the active block 243 is sleeved outside the rotating shaft 221. In other embodiments, the active block 243 can be other shapes, as long as the active block 243 can move along the axial direction of the accommodating hole 2412, and the active block 243 is always in contact with the driven disk 244 under the action of the elastic member 245.

[0044] Reference Figure 5 and Figure 6 , the elastic member 245 is used to drive the active block 243 to abut against the driven disk 244. The elastic member 245 is located on the side of the active block 243 away from the driven disk 244, and the elastic member 245 applies a thrust to the active block 243, so that the active block 243 abuts against the driven disk 244, so that the two adopt friction transmission. In other embodiments, the elastic member 245 is located on the side of the active block 243 facing the driven disk 244, and the elastic member 245 applies a pulling force to the active block 243, so that the active block 243 abuts against the driven disk 244.

[0045] Reference Figure 5 and Figure 6 In this embodiment, the elastic member 245 is a spring, and the spring is in a compressed state. One end of the spring abuts against the active block 243, and the other end of the spring abuts against the adjustment component 246.

[0046] Reference Figure 5 and Figure 6, the bottom wall of the accommodating cavity 2411 and the end surface of the linkage cover body 242 facing the accommodating hole 2412 are both provided with a slot 2413. The two slots 2413 are aligned with each other. A limiting rod 247 is provided in the accommodating cavity 2411, one end of the limiting rod 247 is inserted into the slot 2413 on the linkage housing 241, and the other end of the limiting rod 247 is inserted into the slot 2413 of the linkage cover body 242. In other embodiments, a slot 2413 may also be provided in the bottom wall of the accommodating cavity 2411 or the end surface of the linkage housing 241 facing the accommodating hole 2412, and one end of the limiting rod 247 is inserted into the slot 2413.

[0047] Reference Figure 5 and Figure 6 A first clamping hole 2432 is provided on the active block 243 , and the first clamping hole 2432 can allow the limiting rod 247 to pass through, so that the active block 243 can move along the axial direction of the limiting rod 247 .

[0048] Reference Figure 5 and Figure 6 An oil filling hole 2414 is provided on the outer circumferential surface of the linkage housing 241, and the oil filling hole 2414 is communicated with the accommodating chamber 2411. A plug is provided in the oil filling hole 2414.

[0049] Reference Figure 5 and Figure 6 The linkage housing 241 is provided with an adjustment assembly 246, which is used to adjust the friction between the active block 243 and the driven disk 244. The adjustment assembly 246 includes an adjustment rod 2461, an adjustment disk 2462 and a locking nut 2463.

[0050] Reference Figure 5 and Figure 6 The adjusting rod 2461 is tubular. The adjusting rod 2461 is sleeved outside the rotating shaft 221. The adjusting rod 2461 is rotatably connected to the fixing hole 2422, and one end of the adjusting rod 2461 extends out of the linkage housing. The outer circumference of the adjusting rod 2461 is fixedly connected to a limiting ring 2465, and the limiting ring 2465 is in the fixing groove 2421.

[0051] Reference Figure 5 and Figure 6, the locking nut 2463 is threadedly connected to the outside of the adjustment rod 2461, and the locking nut 2463 abuts against the end surface of the linkage cover body 242 away from the linkage housing 241. The cooperation between the limiting ring 2465 and the locking nut 2463 makes it difficult for the limiting rod 247 to be separated from the linkage cover body 242. In other embodiments, the adjustment rod 2461 and the linkage housing 241 are only rotated, and the adjustment rod 2461 and the linkage cover body 242 can be matched in other ways, such as the adjustment rod 2461 is provided with two retaining springs, one retaining spring is located in the fixing groove 2421, and the other retaining spring is located outside the linkage cover body 242; or the adjustment rod 2461 is provided with two nuts, one nut is located in the fixing groove 2421, and the other nut is located outside the linkage cover body 242; or other structures are provided on the adjustment rod 2461, and other structures make the adjustment rod 2461 only rotate, and the adjustment rod 2461 cannot move along the axis direction of the fixing hole 2422.

[0052] Reference Figure 5 and Figure 6 The adjusting disk 2462 is disposed in the accommodating cavity 2411, and the adjusting disk 2462 is located on the side of the elastic member 245 away from the active block 243. The adjusting disk 2462 is threadedly connected to the adjusting rod 2461. The adjusting disk 2462 is provided with a second clamping hole 2464 on the side facing the elastic member 245, and the second clamping hole 2464 can allow the limiting rod 247 to pass through.

[0053] Reference Figure 5 and Figure 6 , the end surface of the adjusting disk 2462 facing the active block 243 and the end surface of the active block 243 facing the adjusting disk 2462 are both provided with a limiting groove 2431, and the limiting groove 2431 can be inserted into the spring. In other embodiments, the limiting groove 2431 can be provided only on the end surface of the adjusting disk 2462 facing the active block 243 or the end surface of the active block 243 facing the adjusting disk 2462, or at least one of the end surface of the adjusting disk 2462 facing the active block 243 and the end surface of the active block 243 facing the adjusting disk 2462 is connected to the spring in a fixed connection manner. In other embodiments, when the limiting rod 247 is located in contact with the inner circumferential surface of the accommodating cavity 2411, the spring is sleeved outside the limiting rod 247, and the limiting of the spring can also be achieved.

[0054] Reference Figure 1 and Figure 2 The second support seat 12 is provided with a film placing mechanism 3 for placing the film. The film placing mechanism 3 comprises a second support plate 31 , a film placing roller 32 and a second driving source 33 .

[0055] Reference Figure 1 and Figure 2The second support plate 31 is fixedly connected to the end face of the second support seat 12 away from the first support seat 11. The film placing roller 32 is fixedly connected to the end face of the second support plate 31 along the width direction of the frame 1. The second driving source 33 has the same structure as the first driving source 23. The second driving source 33 is fixedly connected to the end face of the second support plate 31 away from the film placing roller 32, and the second driving source 33 is used to drive the film placing roller 32 to rotate.

[0056] Reference Figure 3 A film break detection mechanism 4 is provided on the first support seat 11. The film break detection mechanism 4 is used to stop the equipment and notify the staff of equipment failure when the film breaks.

[0057] Reference Figure 2 and Figure 3 The first support seat 11 has a first vertical hole 111 formed on its end surface facing the second support seat 12. The broken film detection mechanism 4 includes a mounting plate 41, a first conductive rod 42, a second conductive rod 43, a mounting rod 44, a conductive sheet 45 and a mounting sheet 46.

[0058] Reference Figure 3 Two mounting plates 41 are provided, and each of the two mounting plates 41 is fixedly connected to an inner wall of a mounting hole 211 along the width direction of the frame 1 .

[0059] Reference Figure 3 The first conductive rod 42 and the second conductive rod 43 are both arranged between the two mounting plates 41. The first conductive rod 42 is located on the side of the second conductive rod 43 facing the second support seat 12. The first conductive rod 42 is sleeved with a mounting wheel 47, and the conductive sheet 45 and the mounting sheet 46 are fixedly connected to the outer circumferential surface of the mounting wheel 47. The first conductive rod 42, the second conductive rod 43 and the conductive sheet 45 are all made of conductive materials. The conductive sheet 45 extends upward from the second conductive rod 43, and the second conductive rod 43 is located on the downward rotation movement path of the conductive sheet 45.

[0060] Reference Figure 3 The mounting piece 46 extends downwardly from the second conductive rod 43 , and a curved piece 461 is fixedly connected to one side of the mounting piece 46 away from the first conductive rod 42 . The weight of the mounting piece 46 is greater than that of the conductive piece 45 .

[0061] Reference Figure 3 The controller of the packaging machine is connected to two wires, one wire is electrically connected to the first conductive rod 42, and the other wire is electrically connected to the second conductive rod 43. The controller can control the opening and closing of the packaging machine, and can also control the opening and closing of the alarm on the packaging machine.

[0062] Reference Figure 3The mounting rod 44 is disposed between the two mounting plates 41 , and the mounting rod 44 is located on the side of the second conductive rod 43 away from the first guide rod. The film residue passes under the mounting rod 44 and is then wound on the film collection roller 22 .

[0063] Reference Figure 3 When the mounting piece 46 is not acted upon by the film, the conductive piece 45 abuts against the second conductive rod 43, and the two are connected. When the packaging machine winds the remaining film on the film winding roller 22, the film drives the mounting piece 46 to rotate toward the second conductive rod 43, so that the conductive piece 45 is separated from the second conductive rod 43, and the first conductive rod 42 is disconnected from the second conductive rod 43.

[0064] In other embodiments, the transmission assembly 24 is disposed between the first driving source 23 and the mounting tube 212 , as long as the first driving source 23 first drives the transmission assembly 24 to rotate, and then the transmission assembly 24 drives the rotating shaft 221 to rotate.

[0065] The implementation principle of the winding device of a packaging machine in the embodiment of the present application is as follows: the film is pulled out from the film-releasing roller 32, so that the film passes through the second support seat 12 and the first support seat 11, and then is wound on the film-receiving roller 22. The motor 231 is started, driving the output shaft 2322 to rotate, the output shaft 2322 drives the linkage housing, the limit rod 247, and the active block 243 to rotate together, the active block 243 drives the driven disk 244 to rotate, the driven disk 244 drives the rotating shaft 221 and the film-receiving roller 22 to rotate together, so that the film-receiving roller 22 rewinds the remaining film.

[0066] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0067] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present application should be included in the protection scope of the present application.

Claims

1. A winding device for a packaging machine, comprising a frame (1), characterized in that: The frame (1) is provided with a film-receiving mechanism (2) for rewinding the residual film, the film-receiving mechanism (2) comprising a first support plate (21) arranged on the frame (1), a film-receiving roller (22) and a first driving source (23) for driving the film-receiving roller (22) to rotate are rotatably connected to the first support plate (21), and a transmission component (24) for realizing power transmission between the first driving source (23) and the film-receiving roller (22) is provided on the first support plate (21); the first driving source (23) comprises an output shaft (2322), and the transmission component (24) 24) comprises a linkage shell fixedly connected to the output shaft (2322), a receiving chamber (2411) is provided in the linkage shell, a rotating shaft (221) which can be inserted into the receiving chamber (2411) is provided on one side of the film collecting roller (22), a driven disk (244) sleeved on the outside of the rotating shaft (221), an active block (243) which rotates synchronously with the linkage shell, and an elastic member (245) for driving the active block (243) and the driven disk (244) to press against each other are provided in the receiving chamber (2411), and the active block (243) and the driven disk (244) are driven by friction transmission.

2. A winding device for a packaging machine according to claim 1, characterized in that: A limiting rod (247) is provided on the inner wall of the accommodating cavity (2411), the length direction of the limiting rod (247) is consistent with the axis of the rotating shaft (221), the active block (243) is assembled on the limiting rod (247), and the active block (243) can move along the length direction of the limiting rod (247).

3. A winding device for a packaging machine according to claim 2, characterized in that: The transmission assembly (24) is provided with an adjustment assembly (246) for adjusting the friction force between the active block (243) and the driven disk (244); the inner wall of the accommodating cavity (2411) is provided with a fixing groove (2421); the inner wall of the fixing groove (2421) away from the opening is provided with a fixing hole (2422); the adjustment assembly (246) comprises an adjustment disk (2462) arranged in the accommodating cavity (2411) and a fixing hole (2422) rotatably connected to the fixing hole (2422), the adjusting rod (2461) is threadedly connected to the adjusting disk (2462), the adjusting disk (2462) is located on the side of the elastic member (245) away from the active block (243), the side of the elastic member (245) away from the active block (243) is in contact with the adjusting disk (2462), and the adjusting disk (2462) is provided with a second clamping hole (2464) for the limiting rod (247) to pass through.

4. A winding device for a packaging machine according to claim 3, characterized in that: The outer circumferential surface of the adjusting rod (2461) is provided with a limiting ring (2465) located in the fixing groove (2421), and the adjusting rod (2461) is externally threadedly connected with a locking nut (2463) located outside the linkage housing.

5. A winding device for a packaging machine according to claim 4, characterized in that: The elastic member (245) is a spring, and a limiting groove (2431) capable of inserting the spring is provided on the regulating disk (2462) and / or the active block (243).

6. The winding device of a packaging machine according to claim 2, characterized in that: The elastic member (245) is a spring, which is arranged between the regulating disk (2462) and the active block (243), and is sleeved outside the limiting rod (247).

7. The winding device of a packaging machine according to claim 1, characterized in that: An oil injection hole (2414) communicating with the accommodating cavity (2411) is provided on the outer circumferential surface of the linkage housing, and a plug is provided in the oil injection hole (2414).

8. The winding device of a packaging machine according to claim 1, characterized in that: The frame (1) comprises a first support seat (11) and a second support seat (12) which are parallel to each other; a broken film detection mechanism (4) is arranged on the first support seat (11); a first vertical hole (111) is opened on the end surface of the first support seat (11) facing the second support seat (12); the broken film detection mechanism (4) comprises mounting plates (41) which are respectively arranged on the inner wall of the first vertical hole (111) along the width direction of the frame (1); a first conductive rod (42) and a second conductive rod (43) are rotatably connected between the two mounting plates (41); the first conductive rod (42) is located at the second conductive rod (43); The conductive rod (43) is located away from the film collecting mechanism (2). The first conductive rod (42) is rotatably connected to a mounting wheel (47). A conductive sheet (45) is provided on the outer circumferential surface of the mounting wheel (47). The end of the conductive sheet (45) away from the mounting wheel (47) is higher than the highest point of the second conductive rod (43). The second conductive rod (43) is located on the rotation path of the conductive sheet (45). A mounting sheet (46) is provided on the outer circumferential surface of the mounting wheel (47). When the mounting sheet (46) rotates due to the influence of the residual film, the conductive sheet (45) does not contact the second conductive rod (43).

9. A winding device for a packaging machine according to claim 8, characterized in that: An arc-shaped piece (461) is provided at the end of the mounting piece (46) away from the mounting wheel (47).

10. The winding device of a packaging machine according to claim 8, characterized in that: The film collecting mechanism (2) is arranged on a first support seat (11), and a film placing mechanism (3) is arranged on the second support seat (12). The film placing mechanism (3) comprises a second support plate (31) connected to the second support seat (12), a film placing roller (32) is rotatably connected to the second support plate (31), and a second driving source (33) for driving the film placing roller (32) to rotate is arranged on the second support plate (31).

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