Linkage for automatic film wrapping machine

Abstract

The application is a linkage device of automatic film packaging machine, which comprises a mounting base, a weighing mechanism, a lifting mechanism, a lifting and lowering mechanism and a feeding mechanism; the weighing mechanism comprises a weighing platform; the lifting mechanism comprises a lifting driver, a setting frame and a lifting bracket capable of being driven by the lifting driver to lift and lower relative to the setting frame and lift the material from the weighing platform; the lifting and lowering mechanism comprises a lifting and lowering driver and a lifting and lowering seat; the feeding mechanism comprises a feeding driver, a transverse shaft and a feeding frame capable of receiving the material from the lifting bracket and conveying to the lifting and lowering seat along the transverse shaft; the weighing mechanism, the setting frame of the lifting mechanism, the lifting and lowering mechanism and the transverse shaft of the feeding mechanism are fixed on the mounting base at intervals, and the weighing platform, the lifting bracket and the bearing of the feeding frame are matched with each other; each mechanism can be installed independently without affecting each other, and the driver of each mechanism does not need to bear the load of other mechanisms, thereby reducing the load of single driver.

Description

Technical Field

[0001] This invention relates to an automatic film packaging machine, and more particularly to a linkage device for an automatic film packaging machine. Background Technology

[0002] Automatic film packaging machines are mainly found in fresh food markets, supermarkets, and other places where materials need to be wrapped in film. They have replaced the manual wrapping method used by businesses in the past and improved the efficiency of the wrapping operation.

[0003] The existing automatic film packaging machine includes a linkage device, which includes a series of mechanisms such as weighing, lifting, horizontal feeding and lifting. After the material is weighed by the weighing mechanism, it is lifted away from the weighing mechanism by the lifting mechanism, and then moved to the packaging platform for sealing and packaging by the horizontal feeding mechanism and the lifting mechanism.

[0004] In existing automatic film packaging machines, the lifting mechanism and the horizontal feeding mechanism are integrated into the lifting mechanism to transport materials. However, the integration of the lifting mechanism and the horizontal feeding mechanism into the lifting mechanism increases the overall weight of the mechanism. When lifting, the stepper motor responsible for the lifting action is under heavy load and is prone to step loss. That is, the torque of the stepper motor exceeds the torque that the stepper motor can provide, so the rotor inside the stepper motor cannot rotate synchronously with the rotating magnetic field of the stator. This increases the noise and vibration generated during operation.

[0005] In addition, when the linkage device moves the material to the packaging platform, it mainly uses the impact compression spring to make the material detach from the lifting mechanism and stay on the packaging platform. Since the lifting mechanism and the horizontal feeding mechanism are integrated into the lifting mechanism, the vibration generated during the impact will be transmitted to these mechanisms, which may further rub against each other, greatly increasing the noise during operation and the probability of damage to the linkage device.

[0006] In addition, to ensure the normal lifting and lowering operation of the linkage device, two tension springs are usually provided to assist in lifting and lowering. The tension springs and their subsequent maintenance increase the cost of the machine.

[0007] As can be seen from the above deficiencies, there is room for improvement and advancement in the linkage device of the existing automatic film packaging machine. Summary of the Invention

[0008] To address the lack of linkage devices in existing automatic film packaging machines, the present invention aims to provide an automatic film packaging machine linkage device that can independently set up the lifting mechanism, horizontal feeding mechanism, and lifting mechanism, thereby reducing the load on the stepper motor responsible for lifting actions during operation and reducing noise and vibration generated during operation.

[0009] To achieve the above objectives, the automatic film packaging machine linkage device provided by the present invention includes:

[0010] One mounting base;

[0011] A weighing mechanism, which includes a weighing platform;

[0012] A lifting mechanism includes a lifting drive, a mounting frame, and a lifting bracket; the lifting bracket is connected to the lifting drive, and the lifting bracket can be driven by the lifting drive to rise and fall relative to the mounting frame and can lift a material from the weighing platform.

[0013] A lifting mechanism includes a lifting drive and a lifting base, the lifting base being connected to the lifting drive and capable of being lifted and lowered by the lifting drive; and

[0014] A feeding mechanism includes a feeding driver, two transverse shafts and a feeding frame; the feeding frame is connected to the feeding driver, and the feeding frame can be driven by the feeding driver to reciprocate along the two transverse shafts between the lifting mechanism and the weighing mechanism, and can receive the material from the lifting mechanism and transport it to the lifting seat.

[0015] The lifting mechanism's mounting frame, the two transverse shafts of the feeding mechanism, and the lifting mechanism are fixed to the mounting base at intervals.

[0016] The weighing platform of the weighing mechanism includes multiple spaced-apart weighing bearings, and a notch is formed between two adjacent weighing bearings; the lifting bracket of the lifting mechanism includes multiple spaced-apart lifting bearings, and each lifting bearing can move up or down through one of the corresponding notches as the lifting bracket moves up and down.

[0017] The feeding mechanism includes a feeding frame comprising a plurality of spaced-apart feeding carriers, which are staggered with the plurality of weighing carriers; each feeding carrier can extend into or disengage from one of the corresponding slots as the feeding frame moves, and the top of each feeding carrier is higher than the top of the plurality of weighing carriers.

[0018] The aforementioned linkage device for an automatic film packaging machine includes a mounting base comprising a first base plate and a second base plate, which are separately and adjacent to each other; the mounting frame of the weighing mechanism, the lifting mechanism, and the two transverse shafts of the feeding mechanism are fixed to the first base plate, and the lifting mechanism is fixed to the second base plate.

[0019] The aforementioned linkage device for an automatic film packaging machine includes a weighing mechanism comprising two weighing sensors. The weighing platform has a weighing area located between the positions of the weighing base supported by the two weighing sensors.

[0020] The linkage device of the above-mentioned automatic film packaging machine includes a lifting seat comprising a plurality of spaced-apart lifting support members; each of the feeding support members can extend into or detach from two adjacent lifting support members as the feeding frame moves; each of the lifting support members can move upward to detach from two adjacent feeding support members or downward to extend into two adjacent feeding support members as the lifting seat moves up and down.

[0021] The linkage device of the above-mentioned automatic film packaging machine, wherein each lifting support component of the lifting mechanism includes a main frame, a film clamping lever and a torsion spring; the film clamping lever is pivotally mounted on the top of the main frame via a pivot, the torsion spring is mounted on the pivot, and one end of the torsion spring is connected to the main frame, and the other end of the torsion spring is connected to the film clamping lever.

[0022] The linkage device of the above-mentioned automatic film packaging machine, wherein each lifting support component of the lifting mechanism includes a lifting support plate and a lifting support sleeve; the lifting support sleeve is sleeved on the top of the lifting support plate, and the top of the lifting support sleeve is provided with a stepped structure, which gradually concaves from both ends of the lifting support sleeve toward the middle of the lifting support sleeve.

[0023] The linkage device of the above-mentioned automatic film packaging machine, wherein each feeding carrier of the feeding mechanism includes a feeding carrier plate and a feeding carrier sleeve; the feeding carrier sleeve is sleeved on the top of the feeding carrier plate, and the top of the feeding carrier sleeve is provided with a stepped structure, which gradually concaves from both ends of the feeding carrier sleeve toward the middle of the feeding carrier sleeve.

[0024] The improved effects achievable by the technical means of this invention are as follows:

[0025] 1. The linkage device of the automatic film packaging machine of the present invention, wherein the weighing mechanism, the lifting mechanism, the lowering mechanism, and the feeding mechanism are fixed to the mounting base at intervals, and the lifting mechanism, the feeding mechanism, and the lowering mechanism are set independently, compared with the linkage device of the existing automatic film packaging machine, where the lifting mechanism and the horizontal feeding mechanism are integrated into the lifting mechanism, resulting in an increase in the overall weight of the mechanism, a larger load on the stepper motor responsible for the lifting action, a tendency to lose steps, and an increase in noise and vibration generated during operation. In the present invention, each mechanism operates independently, and each driver does not need to bear the weight of other mechanisms, which reduces the load on a single driver, effectively increases the operating speed, eliminates the need for tension springs, and also reduces the noise and vibration transmitted between the various mechanisms.

[0026] 2. The linkage device of the automatic film packaging machine of the present invention, wherein the weighing mechanism, the lifting mechanism, the feeding mechanism and the lifting mechanism are all independently set, and any one of the mechanisms can be disassembled or installed separately during assembly or maintenance without affecting each other, thereby increasing the convenience of assembly and maintenance operations.

[0027] 3. The linkage device of the automatic film packaging machine of the present invention, wherein the weighing mechanism, the lifting mechanism, the feeding mechanism and the lifting mechanism are all independently set, which can reduce the transmission of vibration and noise between the mechanisms.

[0028] 4. The linkage device of the automatic film packaging machine of the present invention, wherein the weighing mechanism, the lifting mechanism, the feeding mechanism and the lifting mechanism are all independently set, and the volume of each mechanism can be designed to be small, so that the above-mentioned mechanisms can be compactly installed, making the linkage device operate more smoothly, and at the same time reducing the body size of the automatic film packaging machine, making the automatic film packaging machine more flexible and applicable to a wider range. Attached Figure Description

[0029] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

[0030] Figure 1 This is a perspective view of a preferred embodiment of the present invention.

[0031] Figure 2 This is a perspective view of a preferred embodiment of the present invention from another angle.

[0032] Figure 3 This is a perspective view of a preferred embodiment of the present invention from another angle.

[0033] Figure 4 This is a perspective view of the weighing mechanism according to a preferred embodiment of the present invention.

[0034] Figure 5 This is a perspective view of the lifting mechanism according to a preferred embodiment of the present invention.

[0035] Figure 6 This is a side cross-sectional view of the lifting mechanism according to a preferred embodiment of the present invention.

[0036] Figure 7 This is a side view of the lifting mechanism according to a preferred embodiment of the present invention, illustrating its operation.

[0037] Figure 8 This is a perspective view of the lifting mechanism according to a preferred embodiment of the present invention.

[0038] Figure 9 This is another perspective view of the lifting mechanism according to a preferred embodiment of the present invention.

[0039] Figure 10 This is a partially enlarged view of the lifting mechanism according to a preferred embodiment of the present invention.

[0040] Figure 11 This is a front view of the lifting mechanism according to a preferred embodiment of the present invention.

[0041] Figure 12 The lifting mechanism of the preferred embodiment of the present invention is along Figure 11 Side view of the AA secant section.

[0042] Figure 13 This is a side view of the lifting mechanism according to a preferred embodiment of the present invention, illustrating its operation.

[0043] Figure 14-18 This is a side view of the operation diagram of a preferred embodiment of the present invention.

[0044] Figures 19-20 This is a front-view schematic diagram of the lifting mechanism according to a preferred embodiment of the present invention. Detailed Implementation

[0045] To provide a detailed understanding of the technical features and practical effects of this invention, and to enable its implementation according to the invention's content, the preferred embodiments shown in the accompanying drawings are described in further detail below:

[0046] like Figures 1 to 3 As shown, the linkage device of the automatic film packaging machine in a preferred embodiment of the present invention includes a mounting base 10, a weighing mechanism 20, a lifting mechanism 30, a feeding mechanism 40, and a lifting mechanism 50.

[0047] like Figures 1 to 3As shown, the mounting base 10 includes a first base plate 11, a second base plate 12, two side plates 13, and a top plate 14. The first base plate 11 and the second base plate 12 are separately and adjacently arranged, serving as the base for mounting the weighing mechanism 20, the lifting mechanism 30, the feeding mechanism 40, and the lifting mechanism 50, respectively. The first base plate 11 and the second base plate 12 can be bolted to a machine base of an automatic film packaging machine, thereby modularizing the linkage device and enabling quick installation onto the machine base of the automatic film packaging machine. The two side plates 13 are spaced apart and upright on the second base plate 12, each side plate 13 being approximately trapezoidal. The top plate 14 is located at the top of the two side plates 13. In this preferred embodiment, different mechanisms are mounted on the first base plate 11 and the second base plate 12 respectively. In practice, the... The mounting base 10 can also be used to install all the mechanisms of the linkage device in the form of a single base plate, achieving the effect of modularizing the linkage device. The advantage of this preferred embodiment is that the weighing mechanism 20, the lifting mechanism 30, and the feeding mechanism 40 are installed on the first base plate 11, and the lifting mechanism 50 is installed on the second base plate 12. The mechanisms of the present invention are further modularized separately. The installation can be completed simply by fixing the first base plate 11 and the second base plate 12 to the machine base of the automatic film packaging machine with bolts. The operation is quick and convenient. In addition, the lifting mechanism 50, which requires the most frequent maintenance, is modularized separately. The lifting mechanism 50 can be removed from the automatic film packaging machine for maintenance or replaced separately, which further improves the convenience of installation and maintenance.

[0048] like Figure 4As shown, the weighing mechanism 20 includes two feet 21, two load cells 22, and a weighing base 23. Each foot 21 is bolted to the first base plate 11, and each foot 21 has a space for mounting a power supply and a circular hole through which the output shaft of the power supply passes. The two load cells 22 are respectively mounted on the two feet 21, and the weighing base 23 is mounted on the two load cells 22. When the weighing base 23 carries material, the weight load on the two load cells 22 changes, causing strain in the strain components inside each load cell 22, which in turn affects the internal circuitry of the load cell 22, thereby causing the load cell 22 to output... Different electrical signals are received by a weighing instrument and converted into corresponding weight data. In this way, the weight change that occurs after the weighing base 23 carries the material can be detected, thereby obtaining the weight of the carried material and displaying it on the display screen of the weighing instrument. Each weighing sensor 22 is equipped with power lines, signal lines and other wiring to enable each weighing sensor 22 to output electrical signals. Since the weighing sensor 22 is common knowledge in the field of weighing technology, the wiring and other detailed structures of the weighing sensor 22 will not be specifically drawn or described in the drawings and description of this invention.

[0049] like Figure 4 As shown, the weighing base 23 includes two feet 231 and a weighing platform 232. The two feet 231 are respectively disposed on the two weighing sensors 22 and are respectively supported at both ends of the weighing platform 232. The weighing platform 232 has a weighing area and includes a plurality of weighing support members 233. The plurality of weighing support members 233 are spaced apart, and each weighing support member 233 extends horizontally and is elongated. A notch 234 is formed between two adjacent weighing support members 233. The weighing area is formed by the plurality of weighing support members 233 and is located between the positions of the weighing platform 232 supported by the two weighing sensors 22, that is, between the two feet 231. The plurality of weighing support members 233 are used to carry materials for weighing. Preferably, each weighing support member 233 can be provided with a plurality of anti-slip protrusions.

[0050] In this preferred embodiment, the weighing mechanism 20 includes the two weighing sensors 22. In practice, the weighing mechanism 20 can also include at least one weighing sensor, and the weighing platform 232 is placed on the at least one weighing sensor to achieve the effect of detecting the weight of the material placed on the weighing platform 232. The advantage of this preferred embodiment is that the weighing area is located between the positions where the weighing platform 232 is supported by the two weighing sensors 22. Compared with the common setting of supporting the weighing sensors at the center of the bottom of the weighing pan, this not only improves the stability of the weighing process and the accuracy of weighing, but also increases the service life of each weighing sensor 22.

[0051] like Figures 5 to 7 As shown, the lifting mechanism 30 includes a lifting driver 31, a mounting frame 32, a transmission component 33, a transmission timing belt 34, a connecting rod assembly 35, and a lifting bracket 36. The lifting driver 31 is a stepper motor, which is mounted on one of the corresponding feet 21 of the weighing mechanism 20 and includes an output shaft 311 that passes through the circular hole of the corresponding foot 21. The mounting frame 32 is mounted on the first base plate 11 and includes two mounting side plates 321, a first fixed shaft 322, and a second fixed shaft 323. Each mounting side plate 321 is bolted to the first base plate 11, and the first fixed shaft 322 and the second fixed shaft 323 pass parallel through the two mounting side plates 321 and are fixed relative to the two mounting side plates 321 by bolts.

[0052] The transmission component 33 includes a transmission synchronous pulley 331 and a transmission shaft 332; the transmission synchronous pulley 331 is disposed on the transmission shaft 332 and can rotate synchronously with the transmission shaft 332; the transmission shaft 332 passes through the two side plates 321 and can be driven to rotate relative to the two side plates 321; the transmission synchronous belt 34 is wrapped around the output shaft 311 of the lifting driver 31 and the transmission synchronous pulley 331, thereby the lifting driver 31 can drive the transmission shaft 332 to rotate relative to the two side plates 321.

[0053] The linkage assembly 35 includes two first linkages 351, two second linkages 352, a first pivot 353, and a second pivot 354. The two first linkages 351 are spaced apart, with one end of each linkage 351 connected to the drive shaft 332, and the other end of each linkage 351 pivotally connected to the two second linkages 352. Specifically, a bolt passes through the first linkage 351 and is screwed into the drive shaft 332 along one radial direction, causing each first linkage 351 to pivot as the drive shaft 332 rotates. One end of the first pivot 353 is pivotally connected to the end of each second linkage 352 away from the two first linkages 351 and is also connected to the lifting bracket 36. The other end of the first pivot 353 is connected to the first fixed shaft 322. Figure 6 as well as Figure 7As shown, when the drive shaft 332 rotates, the two first connecting rods 351 and the two second connecting rods 352 actuate, causing the first pivot member 353 to pivot about the first fixed shaft 322, and driving the lifting bracket 36 to rise or fall. One end of the second pivot member 354 is connected to the second fixed shaft 323, and the other end of the second pivot member 354 is connected to the lifting bracket 36. The second pivot member 354 is parallel to the first pivot member 353. When the first pivot member 353 pivots about the first fixed shaft 322 and drives the lifting bracket 36 to rise or fall, the second pivot member 354 will also pivot about the second fixed shaft 323 at the same time and drive the lifting bracket 36 together with the first pivot member 353.

[0054] like Figure 6 as well as Figure 7 As shown, in this preferred embodiment, the mounting frame 32 further includes a limiting shaft 324 through which the two mounting side plates 321 pass. The linkage assembly 35 further includes a limiting pad 355 disposed on the first pivot member 353. When the first pivot member 353 pivots to raise the lifting bracket 36 to an appropriate position, the limiting pad 355 will abut against the first pivot member 353 to prevent the first pivot member 353 from over-pivoting, thereby providing a limiting effect.

[0055] like Figures 5 to 7 As shown, the lifting bracket 36 includes two first support plates 361, a second support plate 362, and a plurality of lifting support members 363. The two first support plates 361 are spaced apart and are connected to the first pivot member 353 and the second pivot member 354. The second support plate 362 is bolted to the first support plate 361 and is horizontally arranged. The plurality of lifting support members 363 are spaced apart on the second support plate 362. Each lifting support member 363 can move up or down through a corresponding notch 234 of the weighing platform 232 of the weighing mechanism 20 as the lifting bracket 36 rises or falls. By raising the plurality of lifting support members 363, the material placed on the weighing platform 232 of the weighing mechanism 20 can be lifted and removed from the weighing platform 232.

[0056] In this preferred embodiment, each lifting support member 363 includes a lifting support plate 364 and a lifting support sleeve 365. The lifting support plate 364 is an elongated plate body, which is attached to the second support plate 362 and extends vertically upward from the second support plate 362. The lifting support sleeve 365 is sleeved on the top of the lifting support plate 364, wherein the top of the lifting support sleeve 365 is provided with a stepped structure, which gradually concaves from both ends of the lifting support sleeve 365 toward the middle of the lifting support sleeve 365. In this way, the multiple lifting support members 363 can stably support materials of different sizes.

[0057] like Figures 1 to 3 As shown, the feeding mechanism 40 includes a feeding driver 41, a feeding wheel 42, a feeding timing belt 43, two transverse shafts 44, and a feeding frame 45. The feeding driver 41 is correspondingly installed on the other foot 21 of the weighing mechanism 20, and is located on the first base plate 11 away from the second base plate 12. That is, the feeding driver 41 and the lifting driver 31 are respectively installed on the two foot 21. The feeding driver 41 is a stepper motor, which includes an output shaft. The feeding wheel 42 is a timing wheel, which is located on the first base plate 11 near the second base plate 12. The feeding timing belt 43 is wrapped around the output shaft of the feeding driver 41 and the feeding timing belt 43. The two transverse shafts 44 are spaced apart, and each transverse shaft 44 is located on the first base plate 11 and extends linearly toward the weighing mechanism 20 and the lifting mechanism 50.

[0058] The feeding rack 45 includes a base 451, two feeding bearing blocks 452, a connecting pressure block 453, and multiple feeding support members 454. The two feeding bearing blocks 452 are respectively located at the bottom of both sides of the base 451, and each feeding bearing block 452 is fitted with one of the corresponding transverse shafts 44. The connecting pressure block 453 is fixed to the feeding synchronous belt 43 and is connected to the base 451. Thus, when the feeding driver 41 is started, the feeding synchronous belt 43 is driven to move and can drive the feeding rack 45 to reciprocate between the weighing mechanism 20 and the lifting mechanism 50 along the two transverse shafts 44.

[0059] The plurality of feeding carriers 454 are spaced apart on the base 451. Each feeding carrier 454 can extend into one of the corresponding slots 234 of the weighing platform 232 of the weighing mechanism 20 as the feeding frame 45 moves. Specifically, the width of any slot 234 is not less than the sum of the width of the corresponding feeding carrier 454 and the width of the corresponding lifting carrier 363, and the positions of the plurality of feeding carriers 454 and the plurality of lifting carriers 363 are staggered, so that any slot 234 can simultaneously allow the corresponding lifting carrier 363 and the corresponding feeding carrier 454 to extend into it. Preferably, the width of any slot 234 is greater than the sum of the width of the corresponding feeding carrier 454 and the width of the corresponding lifting carrier 363 to avoid collision between any slot 234 and the corresponding feeding carrier 454 and the corresponding lifting carrier 363.

[0060] When the multiple lifting support members 363 of the lifting mechanism 30 are raised to lift the material placed on the weighing platform 232 of the weighing mechanism 20 and remove it from the weighing platform 232, the feeding driver 41 is activated, causing the feeding rack 45 to move toward the weighing mechanism 20 and causing each of the feeding support members 454 to extend into one of the corresponding slots 234, wherein the tops of the multiple feeding support members 454 are higher than the tops of the multiple weighing support members 233, so that when the lifting mechanism 30 subsequently lowers the multiple lifting support members 363, the material will be supported by the multiple feeding support members 454 and carried by the multiple feeding support members 454; as Figure 1 As shown, in this preferred embodiment, each feeding carrier 454 includes a feeding carrier plate 455 and a feeding carrier sleeve 456. The structure of the feeding carrier plate 455 and the feeding carrier sleeve 456 of each feeding carrier 454 is consistent with the structure of the lifting carrier plate 364 and the lifting carrier sleeve 365 of each lifting carrier 363. They all have a stepped structure, which can stably support materials of different sizes.

[0061] like Figure 8 , Figure 9 as well as Figure 11 As shown, the lifting mechanism 50 includes a lifting drive 51, a transmission rod 52 with a first synchronous pulley 521, a first synchronous belt 53, a second synchronous pulley 54, a second synchronous belt 55, two vertical shafts 56, and a lifting seat 57. The lifting drive 51 is located on the second base plate 12. The lifting drive 51 is a stepper motor and includes an output shaft 511. The transmission rod 52 is rotatably located on the second base plate 12. The first synchronous belt 53 is arranged around the first synchronous pulley 521 of the transmission rod 52 and the output shaft 511 of the lifting drive 51. The second synchronous pulley 54 is located on the top plate 14. The transmission rod 52 and the second synchronous pulley 54 are aligned vertically in a vertical direction. The second synchronous belt 55 is arranged around the second synchronous pulley 54 and the transmission rod 52 along the vertical direction. The two vertical shafts 56 are spaced apart and extend vertically from the second base plate 12 to the top plate 14. The second synchronous belt 55 is located between the two vertical shafts 56.

[0062] The lifting seat 57 includes a main seat 571, two bearing blocks 572, a synchronous belt pressure block 573, a mounting plate 574, and multiple lifting support components 575. The main seat 571 has an inverted L-shaped structure and can be divided into an upright part and a horizontal part. The two bearing blocks 572 are spaced apart and connected to the upright part of the main seat 571, and the two bearing blocks 572 are respectively sleeved on the two vertical shafts 56. The synchronous belt pressure block 573 is fixed to the second synchronous belt 55 and connected to the upright part of the main seat 571, thereby enabling the lifting support to be lifted. Figure 12 as well as Figure 13As shown, when the lifting drive 51 is started, the second synchronous belt 55 moves through the transmission rod 52 and the first synchronous belt 53, thereby driving the lifting seat 57 to rise or fall.

[0063] The mounting plate 574 is attached to the horizontal portion of the main seat 571. Multiple lifting support members 575 are spaced apart on the mounting plate 574. The positions of the multiple lifting support members 575 and the multiple feeding support members 454 of the feeding mechanism 40 are staggered. When the feeding frame 45 of the feeding mechanism 40 moves to the lifting mechanism 50, each feeding support member 454 extends between two adjacent lifting support members 575. When the lifting seat 57 rises, each lifting support member 575... 5. The material is lifted up and disengaged from the two adjacent feeding carriers 454, and the material carried on the multiple feeding carriers 454 is lifted and carried by the multiple lifting carriers 575. When the lifting seat 57 descends, each lifting carrier 575 descends and returns to the two adjacent feeding carriers 454. When each lifting carrier 575 descends to the bottom, the top of each lifting carrier 575 is lower than the top of the multiple feeding carriers 454.

[0064] In this preferred embodiment, the setting plate 574 includes a plurality of spaced-apart setting portions, and a lifting slot is formed between two adjacent setting portions. Each lifting support member 575 is disposed on one of the corresponding setting portions. Through the design of the setting plate 574 and the plurality of setting portions, the stability of the plurality of lifting support members 575 in carrying materials can be enhanced while avoiding collision between the lifting seat 57 and the plurality of feeding support members 454 of the feeding mechanism 40 during the lifting process.

[0065] like Figure 10 As shown, in this preferred embodiment, in addition to the lifting support member 575 located at the center of the plurality of lifting support members 575, each lifting support member 575 includes a main frame 576, a film clamping lever 577, and a torsion spring 578; the main frame 576 is connected to the mounting plate 574, the film clamping lever 577 is pivotally connected to the top of the main frame 576 via a pivot, and the torsion spring 578 is disposed on the pivot connecting the film clamping lever 577 and the main frame 576, with one end of the torsion spring 578 connected to the film clamping lever 577 and the other end connected to the main frame 576. The above structure can assist in sealing the film when the material is transported to a packaging platform of the automatic film packaging machine.

[0066] like Figures 14 to 18 The diagram illustrates the operation of the linkage device of the automatic film packaging machine according to a preferred embodiment of the present invention, and the details are explained in the following paragraphs.

[0067] like Figure 14 As shown, firstly, a material 90 that is about to be sealed and packaged is placed on multiple weighing supports 233 of the weighing platform 232 of the weighing mechanism 20. The material is weighed by the two weighing sensors 22. After weighing is completed, as shown... Figures 14 to 15 As shown, when the lifting drive 31 is activated, the lifting bracket 36 of the lifting mechanism 30 is driven to rise, and the material is lifted away from the weighing platform 232 by the plurality of lifting support members 363, and the material 90 is then carried by the lifting bracket 36; as Figures 15 to 16 As shown, the feeding driver 41 is then activated, and the feeding rack 45 is driven to move to the weighing mechanism 20. Then, the lifting bracket 36 is driven by the lifting driver 31 to descend. After the material 90 descends a certain distance, it will fall onto the multiple feeding carriers 454 of the feeding rack 45 and be lifted by the multiple feeding carriers 454, and will no longer descend with the lifting bracket 36. Thus, the material 90 is now carried by the feeding rack 45.

[0068] like Figures 16 to 17 As shown, the feeding rack 45 is then moved to the lifting mechanism 50 by the feeding driver 41, and then, as... Figures 17 to 18 As shown, the lifting seat 57 is driven by the lifting driver 51 to rise upwards, and the multiple lifting support members 575 lift the material 90, so that the material is separated from the feeding rack 45 and is instead carried by the lifting seat 57. Finally, the material 90 is carried upwards by the lifting seat 57 to the packaging platform of the automatic film packaging machine for sealing.

[0069] like Figures 19 to 20As shown, when the material 90 is about to rise to the packaging platform, the two sealing plates 81 of the packaging platform will move away from each other to form an opening on the packaging platform. At the same time, a thin film M will cover the opening. When the material 90 rises to the packaging platform and passes through the opening, it will gradually push up the thin film M, so that the thin film M covers the upper half of the material 90. When the lifting seat 57 rises to the top, the material 90 will completely pass through the opening. The position of each sealing plate 81 corresponds in height to the film clamping lever 577 of the plurality of lifting support members 575. At this time, by means of the structure of the film clamping lever 577 pivotally connected to the main frame 576, the two sealing plates 81 will separate. Do not approach each other from both sides of the multiple lifting support members 575, and sequentially push open the clamping tabs 577 of the multiple lifting support members 575, so that the clamping tabs 577 of each lifting support member 575 pivot downward relative to the main frame 576, and gradually cover the lower half of the material 90 with the film M. At the same time, the material 90 is no longer carried by the multiple lifting support members 575, but is carried by the two sealing plates 81. Then the lifting seat 57 is driven by the lifting driver 51 to descend to the bottom, and each lifting support member 575 returns to the two adjacent feeding support members 454. In this way, the linkage device completes one cycle of operation and can then continue to weigh and convey the next material.

[0070] In summary, the linkage device of the automatic film packaging machine of the present invention fixes the lifting mechanism 30, the feeding mechanism 40, and the lifting mechanism 50 at intervals on the mounting base 10, and each of the lifting mechanism 30, the feeding mechanism 40, and the lifting mechanism 50 is equipped with a driver. The lifting mechanism 30, the feeding mechanism 40, and the lifting mechanism 50 are each independently set up. Compared with the linkage device of the existing automatic film packaging machine, where the lifting mechanism and the horizontal feeding mechanism are integrated into the lifting mechanism, resulting in an increase in the overall weight of the mechanism, the stepper motor responsible for the lifting action has a large load and is prone to step loss, increasing the noise and vibration generated during operation. In the present invention, each mechanism operates independently, and the driver of each mechanism does not need to bear the weight of other mechanisms, which reduces the load of a single motor, effectively increases the operating speed, and reduces the noise and vibration generated during operation. At the same time, it can eliminate the need for tension springs, reducing the failure rate and maintenance costs of the automatic film packaging machine.

[0071] The linkage device of the automatic film packaging machine of the present invention has the lifting mechanism 30, the feeding mechanism 40 and the lifting mechanism 50 all set independently. Compared with the linkage device of the existing automatic film packaging machine which integrates the lifting mechanism and the horizontal feeding mechanism into the lifting mechanism at the same time, requiring disassembly or installation at the same time during maintenance, the present invention can remove or install any one of the mechanisms separately during assembly or maintenance, which can increase the convenience of assembly and maintenance operations.

[0072] In addition, the weighing mechanism 20, the lifting mechanism 30, the feeding mechanism 40, and the lifting mechanism 50 are all set independently. In addition to reducing the transmission of vibration and noise between the various mechanisms, the size of each mechanism can also be designed to be smaller, allowing the above mechanisms to be installed compactly, making the linkage device operate more smoothly, and at the same time reducing the body size of the automatic film packaging machine, making the automatic film packaging machine more flexible and applicable to a wider range.

[0073] In this preferred embodiment, the stability of the material conveying process is greatly improved by the close matching of the multiple weighing bearings 233 of the weighing mechanism 20, the multiple lifting bearings 363 of the lifting mechanism 30, the multiple feeding bearings 454 of the feeding mechanism 40, and the multiple lifting bearings 575 of the lifting mechanism 50, as well as the weight of the material itself. At the same time, the weighing mechanism 20, the lifting mechanism 30, the feeding mechanism 40, and the lifting mechanism 50 can be arranged more compactly, effectively reducing the overall size of the automatic film packaging machine and allowing users to use the automatic film packaging machine more flexibly.

[0074] In a preferred embodiment of the present invention, each of the lifting support members 575 further adopts the form of a main frame 576, a film clamping lever 577, and a torsion spring 578. When the material rises to the packaging platform, the material can naturally detach from the multiple lifting support members 575 through the operation of the sealing plate 81 of the packaging platform. Compared with the linkage device of the existing automatic film packaging machine, when transporting the material to the packaging platform, it is necessary to use the impact compression spring to make the material detach from the lifting mechanism and stay on the packaging platform. The preferred embodiment of the present invention can reduce the impact force of the mechanism, further reduce the noise during operation and the probability of damage to the linkage device.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A linkage device for an automatic film packaging machine, characterized in that, It includes: One mounting base; A weighing mechanism, which includes a weighing platform; A lifting mechanism includes a lifting drive, a mounting frame, and a lifting bracket; the lifting bracket is connected to the lifting drive, and the lifting bracket can be driven by the lifting drive to rise and fall relative to the mounting frame and can lift a material from the weighing platform. A lifting mechanism includes a lifting drive and a lifting base, the lifting base being connected to the lifting drive and capable of being driven by the lifting drive to lift and lower; as well as A feeding mechanism includes a feeding driver, two transverse shafts and a feeding frame; the feeding frame is connected to the feeding driver, and the feeding frame can be driven by the feeding driver to reciprocate along the two transverse shafts between the lifting mechanism and the weighing mechanism, and can receive the material from the lifting mechanism and transport it to the lifting seat. The lifting mechanism's mounting frame, the two transverse shafts of the feeding mechanism, and the lifting mechanism are fixed to the mounting base at intervals. The weighing platform of the weighing mechanism includes multiple spaced-apart weighing bearings, and a notch is formed between two adjacent weighing bearings; the lifting bracket of the lifting mechanism includes multiple spaced-apart lifting bearings, and each lifting bearing can move up or down through one of the corresponding notches as the lifting bracket moves up and down. The feeding mechanism includes a feeding frame comprising a plurality of spaced-apart feeding carriers, which are staggered with the plurality of weighing carriers; each feeding carrier can extend into or disengage from one of the corresponding slots as the feeding frame moves, and the top of each feeding carrier is higher than the top of the plurality of weighing carriers.

2. The linkage device of the automatic film packaging machine according to claim 1, characterized in that, The mounting base includes a first base plate and a second base plate, which are separately and adjacent to each other; the mounting frame of the weighing mechanism, the lifting mechanism and the two transverse shafts of the feeding mechanism are fixed to the first base plate, and the lifting mechanism is fixed to the second base plate.

3. The linkage device of the automatic film packaging machine according to claim 1, characterized in that, The weighing mechanism includes two weighing sensors, and the weighing platform has a weighing area located between the positions where the weighing platform is supported by the two weighing sensors.

4. The linkage device of the automatic film packaging machine according to claim 1, characterized in that, The lifting seat includes a plurality of spaced-apart lifting support members; each of the feeding support members can extend into or detach from two adjacent lifting support members as the feeding frame moves; each of the lifting support members can move upward to detach from two adjacent feeding support members or downward to extend into two adjacent feeding support members as the lifting seat rises and falls.

5. The linkage device of the automatic film packaging machine according to claim 4, characterized in that, Each lifting support component of the lifting mechanism includes a main frame, a diaphragm lever, and a torsion spring; the diaphragm lever is pivotally mounted on the top of the main frame via a pivot, the torsion spring is mounted on the pivot, and one end of the torsion spring is connected to the main frame, while the other end of the torsion spring is connected to the diaphragm lever.

6. The linkage device of the automatic film packaging machine according to claim 1, characterized in that, The lifting mechanism includes a plurality of spaced-apart lifting support components; each lifting support component includes a main frame, a diaphragm lever, and a torsion spring; the diaphragm lever is pivotally mounted on the top of the main frame via a pivot, the torsion spring is mounted on the pivot, and one end of the torsion spring is connected to the main frame, and the other end of the torsion spring is connected to the diaphragm lever.

7. The linkage device of the automatic film packaging machine according to claim 1, characterized in that, Each lifting support component of the lifting mechanism includes a lifting support plate and a lifting support sleeve; the lifting support sleeve is fitted on the top of the lifting support plate, and the top of the lifting support sleeve is provided with a stepped structure, which gradually concaves from both ends of the lifting support sleeve toward the middle of the lifting support sleeve.

8. The linkage device of the automatic film packaging machine according to claim 1, characterized in that, Each feeding carrier component of the feeding mechanism includes a feeding carrier plate and a feeding carrier sleeve; the feeding carrier sleeve is sleeved on the top of the feeding carrier plate, and the top of the feeding carrier sleeve is provided with a stepped structure, which gradually concaves from both ends of the feeding carrier sleeve toward the middle of the feeding carrier sleeve.

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