Transverse sealing mechanism special for fruit preservative film packaging

Abstract

The utility model discloses a special transverse sealing mechanism for fruit preservative film packaging, which comprises a rack, and a driving module, a transverse sealing module, a conveying module and an air blowing module are arranged on the rack; the air blowing module comprises a pair of air blowing units, each air blowing unit comprises a mounting base and an air blowing pipe, and a plurality of air blowing holes facing the conveying module are formed in the side face of each air blowing pipe; all the modules are in close fit, so that the whole structure of the packaging machine is more compact; a pair of air blowing units in the air blowing module are arranged on the two sides of the fruit conveying channel, air blowing holes are formed in the side faces of air blowing pipes, before the transverse sealing module is about to seal and cut, the air blowing pipes on the two sides of the fruits spray compressed air, redundant air in the preservative film is squeezed out, the exhaust purpose is achieved, the packaging effect is further optimized, manual participation is not needed, and the exhaust efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and more specifically, to a special horizontal sealing mechanism for fruit preservation film packaging. Background Technology

[0002] The horizontal sealing mechanism of a fruit preservation film packaging machine is a crucial component used to seal the packaging material horizontally, forming a horizontal seal on the packaged product. In existing fruit preservation film packaging machines, after the horizontal sealing mechanism seals the bag, excessive air remains inside. This not only occupies space in the packaging box, limiting the amount of fruit that can be packed, but also easily causes the fruit to spoil. Manually venting the air from the packaging bag is inefficient, increases labor costs, and is time-consuming and labor-intensive. Utility Model Content

[0003] This utility model provides a special horizontal sealing mechanism for fruit preservation film packaging to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: a special horizontal sealing mechanism for fruit preservation film packaging, including a frame, on which a drive module, a horizontal sealing module, a conveying module, and an air blowing module are provided; the drive module is drivenly connected to the horizontal sealing module, and the horizontal sealing module is drivenly connected to the conveying module; the conveying module is used to convey fruit and preservation film, and the horizontal sealing module horizontally seals the preservation film to form a packaging bag;

[0004] The air blowing module includes a pair of air blowing units, which are respectively located on the top sides of the conveying module. Each air blowing unit includes a mounting base and an air blowing pipe. The mounting base is connected to the frame, and the air blowing pipe is located on the mounting base. One end of the air blowing pipe is connected to a compressed air source, and the other end is provided with a plug. The side of the air blowing pipe is provided with several air blowing holes facing the conveying module.

[0005] Preferably, the mounting base includes a pair of clamps connected to the air blowing pipe; the clamps are provided with a strip-shaped through groove, and a fastening bolt is provided on the strip-shaped through groove, the fastening bolt passing through the strip-shaped through groove and threadedly connected to the frame.

[0006] Preferably, the length direction of the air blowing pipe is parallel to the fruit conveying direction on the conveying module.

[0007] Preferably, the length of the air blowing tube is 230-250 mm, the outer diameter is 7-9 mm, and the inner diameter is 5.5-6.5 mm; the number of air blowing holes is 4-6, the diameter of the air blowing holes is 1-2 mm, and the interval between two adjacent air blowing holes is 20-30 mm.

[0008] Preferably, the horizontal sealing module includes an upper horizontal seal and a lower horizontal seal. The upper horizontal seal includes an upper rotating shaft, a driven wheel, and a pair of upper horizontal sealing molds. The pair of upper horizontal sealing molds are symmetrically arranged on both sides of the upper rotating shaft, and the driven wheel is located at the end of the upper rotating shaft. The lower horizontal seal includes a lower rotating shaft, a driving wheel, and a pair of lower horizontal sealing molds. The pair of lower horizontal sealing molds are symmetrically arranged on both sides of the lower rotating shaft. The driving wheel is located at one end of the lower rotating shaft, and the other end of the lower rotating shaft is connected to the drive module. The driving wheel and the driven wheel are meshed together.

[0009] Preferably, the upper rotating shaft is connected to the frame via a pair of buffer components; the buffer components include a slider, a pressure block, a guide rod, and a spring; the upper rotating shaft and the slider are connected via bearings, and the two sides of the slider are slidably connected to the frame; the slider is provided with a groove; the pressure block is disposed on the frame, its bottom is connected to the guide rod, and the spring is sleeved on the guide rod, with one bottom end abutting against the bottom of the groove.

[0010] Preferably, the upper rotating shaft is provided with an upper brush assembly at one end, and the lower rotating shaft is provided with a lower brush assembly at one end. The upper brush assembly is used to supply power to the upper horizontal sealing mold, and the lower brush assembly is used to supply power to the lower horizontal sealing mold. The other end of the lower rotating shaft is provided with a sensing block, the drive module is provided with a switch bracket, the switch bracket is provided with a proximity switch, and the proximity switch is configured to cooperate with the sensing block.

[0011] Preferably, the conveying module includes two symmetrically arranged chain drive assemblies, which are connected by a support assembly and a drive shaft. The support assembly consists of several support rods and has a through groove through which the lower horizontal sealing mold can pass. The chain drive assembly includes a drag chain, a guide rail, a first driving sprocket, and several first driven sprockets. The first driven sprockets are rotatably connected to the frame. The first driving sprocket is mounted on the drive shaft, and the drag chain is respectively sleeved on the first driving sprocket and the first driven sprocket. A second driven sprocket is mounted on the drive shaft, and a second driving sprocket is mounted on the lower rotating shaft. The second driving sprocket and the second driven sprocket are connected by a chain drive.

[0012] Preferably, the drive module includes a servo motor, a worm gear reducer, and a connecting flange. The worm gear reducer is mounted on the side of the frame via the connecting flange. The output end of the servo motor is connected to the worm gear reducer, and the output end of the worm gear reducer is connected to the horizontal sealing module.

[0013] Preferably, it also includes a top plate, the top plate being provided with a rotatable adjusting bolt, the adjusting bolt being threadedly connected to the top of the frame; a protective cover is installed on the top plate.

[0014] Compared with existing technologies, the advantages of this invention are as follows: This invention integrates the drive module, horizontal sealing module, conveying module, and air blowing module onto a single frame, with each module working closely together to make the overall structure of the packaging machine more compact. A pair of air blowing units in the air blowing module are arranged on both sides of the fruit conveying channel, with air blowing holes on the sides of the air blowing pipes. Just before the horizontal sealing module is about to seal and cut, compressed air is ejected from the air blowing pipes on both sides of the fruit, squeezing out excess air from the plastic wrap and achieving the purpose of venting, further optimizing the packaging effect. No manual intervention is required, and the venting efficiency is high. This invention has a reasonable design and simple structure. While ensuring stable venting of the fruit plastic wrap before horizontal sealing and cutting, it effectively reduces production costs and is easy to promote and use. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the horizontal sealing mechanism for fruit preservation film packaging according to an embodiment of the present invention;

[0016] Figure 2 This is an internal structural diagram of the fruit preservation film packaging special horizontal sealing mechanism after removing the protective cover according to an embodiment of the present utility model;

[0017] Figure 3 for Figure 2 Another perspective on the structure;

[0018] Figure 4 for Figure 2 Another perspective on the structure;

[0019] Figure 5 for Figure 2 Front view;

[0020] Figure 6 for Figure 2 A cross-sectional view;

[0021] Figure 7 for Figure 2 Side sectional view;

[0022] exist Figures 1 to 7 In the diagram, the correspondence between the component names and the drawing numbers is as follows:

[0023] 1--Frame, 2--Drive Module, 21--Servo Motor, 22--Worm Gear Reducer, 23--Connecting Flange, 3--Horizontal Sealing Module, 31--Upper Horizontal Sealing, 311--Upper Rotating Shaft, 312--Driven Wheel, 313--Upper Horizontal Sealing Mold, 314--Upper Brush Assembly, 32--Lower Horizontal Sealing, 321--Lower Rotating Shaft, 322--Drive Wheel, 323--Lower Horizontal Sealing Mold, 324--Lower Brush Assembly, 325--Second Drive Sprocket, 33--Induction Block, 34--Switch Bracket, 4--Conveying Module, 41--Chain Drive Assembly, 411-- Drag chain, 412--Guide rail, 413--First driving sprocket, 414--First driven sprocket, 42--Support assembly, 421--Guide rod, 43--Drive shaft, 44--Second driven sprocket, 45--Chain, 5--Air blowing module, 51--Air blowing unit, 511--Air blowing pipe, 512--Plug, 5111--Air blowing hole, 513--Clamp, 5131--Strip groove, 6--Buffer assembly, 61--Slider, 62--Pressure block, 63--Guide rod, 64--Spring, 7--Top plate, 8--Adjusting bolt, 9--Protective cover. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0025] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Please refer to Figures 1 to 7This utility model provides a special horizontal sealing mechanism for fruit preservation film packaging, including a frame 1, on which a drive module 2, a horizontal sealing module 3, a conveying module 4 and an air blowing module 5 are provided; the drive module 2 is drivenly connected to the horizontal sealing module 3, and the horizontal sealing module 3 is drivenly connected to the conveying module 4; the conveying module 4 is used to convey fruit and preservation film, and the horizontal sealing module 3 performs horizontal sealing of the preservation film to form a packaging bag;

[0028] The air blowing module 5 includes a pair of air blowing units 51, which are respectively located on the top sides of the conveying module 4. Each air blowing unit 51 includes a mounting base and an air blowing pipe 511. The mounting base is connected to the frame 1, and the air blowing pipe 511 is located on the mounting base. One end of the air blowing pipe 511 is connected to a compressed air source, and the other end is provided with a plug 512. The side of the air blowing pipe 511 is provided with a plurality of air blowing holes 5111 facing the conveying module 4.

[0029] In this embodiment of the invention, the drive module 2 serves as the power source for the entire horizontal sealing mechanism, driving the horizontal sealing module 3 to move. The conveying module 4 guides the fruit and plastic wrap through the horizontal sealing module 3, and is connected to it via a transmission mechanism. When the horizontal sealing module 3 moves, the conveying module 4 moves synchronously. The speed of the conveying module 4 is matched with the horizontal sealing action, and this coordinated movement ensures the consistency of the sealing quality and position of each product, thus improving product quality. In this embodiment, a pair of air-blowing units 51 act on both sides of the fruit and plastic wrap respectively. Taking one side as an example, please refer to... Figure 1 , Figure 1 The spherical structure on the conveying module 4 is a schematic diagram of the fruit. When the fruit wrapped in plastic wrap enters the air blowing unit 51 along with the conveying module 4, one end of the plastic wrap has already been sealed by the horizontal sealing module 3, while the other end remains unsealed. The air blowing pipe 511 has a row of air vents on one side of the plastic wrap. Just before the cutter is about to seal, the air blowing pipe 511 sprays compressed air to expel excess air from the unsealed end of the plastic wrap, achieving the purpose of venting. After venting, the horizontal sealing module 3 heat-presses the unsealed end of the plastic wrap to form a seal. Simultaneously, the cutter on the horizontal sealing module 3 cuts the seal, allowing the plastic wrap to wrap the fruit and form an independent packaging bag.

[0030] One end of the air blowing pipe 511 is sealed with a plug 512, and the other end is connected to a compressed air source, such as a piston air compressor, screw air compressor, vane air compressor, centrifugal air compressor, scroll air compressor, and diaphragm air compressor. Multiple air blowing holes 5111 are arranged in a row. When compressed air is ejected from the air blowing holes 5111, it can tightly adhere the lighter plastic wrap to the fruit and conveyor module 4, thereby expelling the air inside the plastic wrap.

[0031] With the above-described structure, the venting module can promptly expel air from the cling film during the packaging process, ensuring a tight seal between the cling film and the fruit. This prevents unevenness and wrinkles caused by air, improving the packaging's aesthetics. Furthermore, reducing the air content, especially oxygen, inside the packaging slows down the fruit's respiration and metabolism, delaying ripening and aging, and helping to maintain the fruit's freshness and taste.

[0032] Preferably, the mounting base includes a pair of clamps 513 connected to the air blowing pipe 511. Each clamp 513 has a slot 5131 with a fastening bolt passing through it and threadedly connected to the frame 1. In this embodiment, the clamp 513 is connected to the frame 1 via the slot 5131 and the fastening bolt. This design allows the installation position of the air blowing pipe 511 to be adjusted within the range of the slot 5131. During installation, there is no need for precise alignment with fixed mounting holes. Simply thread the fastening bolt through the slot 5131 to the frame 1, and then adjust the position of the clamp 513 on the slot 5131 as needed. This allows the air blowing pipe 511 to be easily installed in a suitable position, greatly improving installation efficiency and convenience, and increasing the flexibility of the installation position. This enables the air blowing pipe 511 to be quickly adjusted for fruits of different sizes.

[0033] Preferably, the length direction of the air blowing pipe 511 is parallel to the fruit conveying direction on the conveying module 4. This structural arrangement allows the air blowing pipe 511 to evenly blow air out of the fruit packaging bag along the fruit conveying direction, improving exhaust efficiency. Furthermore, the parallel arrangement prevents airflow from interfering with the normal conveying of the fruit on the conveying module 4.

[0034] Preferably, the length of the air blowing pipe 511 is 230–250 mm, the outer diameter is 7–9 mm, and the inner diameter is 5.5–6.5 mm; the number of air blowing holes 5111 is 4–6, the diameter of each air blowing hole 5111 is 1–2 mm, and the interval between two adjacent air blowing holes 5111 is 20–30 mm. By limiting the above dimensions and parameters, efficient exhaust with appropriate airflow intensity and distribution can be ensured, adapting to fruit packaging requirements and balancing space utilization and equipment stability.

[0035] Preferably, the horizontal sealing module 3 includes an upper horizontal seal 31 and a lower horizontal seal 32. The upper horizontal seal 31 includes an upper rotating shaft 311, a driven wheel 312, and a pair of upper horizontal seal 31 molds. The pair of upper horizontal seal 31 molds are symmetrically arranged on both sides of the upper rotating shaft 311, and the driven wheel 312 is located at the end of the upper rotating shaft 311. The lower horizontal seal 32 includes a lower rotating shaft 321, a driving wheel 322, and a pair of lower horizontal seal 32 molds. The pair of lower horizontal seal 32 molds are symmetrically arranged on both sides of the lower rotating shaft 321. The driving wheel 322 is located at one end of the lower rotating shaft 321, and the other end of the lower rotating shaft 321 is connected to the drive module 2. The driving wheel 322 is meshed with the driven wheel 312. In this embodiment, during operation, the drive module 2 drives the lower rotating shaft 321 to rotate, and the driving wheel 322 at one end of the lower rotating shaft 321 rotates accordingly. Since the driving wheel 322 is meshed with the driven wheel 312, the driven wheel 312 drives the upper rotating shaft 311 to rotate. The upper and lower rotating shafts 321 respectively drive the upper horizontal sealing mold 31 and the lower horizontal sealing mold 32, which are symmetrically arranged on both sides, to move synchronously towards each other, thereby performing a horizontal sealing of the plastic wrap delivered by the conveying module 4, completing the horizontal sealing action of the packaging. The horizontal sealing module 3 in this embodiment adopts an upper horizontal sealing 31 and a lower horizontal sealing 32 structure. By driving the symmetrically arranged upper and lower horizontal sealing molds 32 through the upper rotating shaft 311 and the lower rotating shaft 321 respectively, and with the driving wheel 322 meshing with the driven wheel 312, precise transmission can be achieved, ensuring that the upper and lower horizontal sealing molds 32 synchronously and stably perform horizontal sealing of the plastic wrap, improving sealing quality and efficiency.

[0036] Preferably, the upper rotating shaft 311 is connected to the frame 1 via a pair of buffer components 6; the buffer component 6 includes a slider 61, a pressure block 62, a guide rod 63, and a spring 64; the upper rotating shaft 311 and the slider 61 are connected via bearings, and the two sides of the slider 61 are slidably connected to the frame 1; the slider 61 is provided with a groove; the pressure block 62 is disposed on the frame 1, and its bottom is connected to the guide rod 63; the spring 64 is sleeved on the guide rod 63, and one end of its bottom abuts against the bottom of the groove.

[0037] When the horizontal sealing module 3 is working, the upper rotating shaft 311 rotates under the drive of the driven wheel 312. Since the upper rotating shaft 311 is connected to the slider 61 through the bearing, and the slider 61 is slidably connected to the frame 1, and the spring 64 can compress or extend according to pressure changes, the upper rotating shaft 311 can adaptively adjust its position within a certain range, which helps the upper and lower horizontal sealing 32 molds fit better. When the upper horizontal sealing 31 mold encounters resistance during the sealing process, the spring 64 provides buffering force through its own extension and contraction to adapt to different working conditions, ensuring that the upper horizontal sealing 31 mold can stably cooperate with the lower horizontal sealing 32 mold for horizontal sealing operation. It also plays a role in protecting the equipment, reducing impact and wear, and helping to extend the service life of the equipment.

[0038] Preferably, the upper rotating shaft 311 is provided with an upper brush assembly 314 at one end, and the lower rotating shaft 321 is provided with a lower brush assembly 324 at one end. The upper brush assembly 314 is used to supply power to the upper horizontal sealing mold 31, and the lower brush assembly 324 is used to supply power to the lower horizontal sealing mold 32. The other end of the lower rotating shaft 321 is provided with a sensing block 33, and the drive module 2 is provided with a switch bracket 34. The switch bracket 34 is provided with a proximity switch, and the proximity switch is configured to cooperate with the sensing block 33.

[0039] In this embodiment, the upper brush assembly 314 at the end of the upper rotating shaft 311 supplies power to the upper horizontal sealing mold 31, and the lower brush assembly 324 at the end of the lower rotating shaft 321 supplies power to the lower horizontal sealing mold 32, enabling the upper and lower horizontal sealing molds 32 to obtain electrical energy for heating and other operations, thereby achieving horizontal sealing of the cling film. The drive module 2 drives the lower rotating shaft 321 to rotate, and the sensing block 33 at the other end of the lower rotating shaft 321 rotates accordingly. When the sensing block 33 rotates to a position opposite to the proximity switch on the switch bracket 34, the proximity switch senses the sensing block 33 and sends a signal. This signal can be used to control the operation of the drive module 2, such as controlling the rotation speed or starting and stopping of the lower rotating shaft 321, thereby achieving precise control of the working process of the horizontal sealing module 3.

[0040] Preferably, the conveying module 4 includes two symmetrically arranged chain drive assemblies 41, which are connected by a support assembly 42 and a drive shaft 43. The support assembly 42 is composed of several support rods 421, and has a through groove through which the lower horizontal seal 32 mold can pass. The chain drive assembly 41 includes a drag chain 411, a guide rail 412, a first drive sprocket 413, and several first driven sprockets 414. The first driven sprockets 414 are rotatably connected to the frame 1. The first drive sprocket 413 is mounted on the drive shaft 43, and the drag chain 411 is respectively sleeved on the first drive sprocket 413 and the first driven sprockets 414. The drive shaft 43 is provided with a second driven sprocket 44, and the lower rotating shaft 321 is provided with a second drive sprocket 325. The second drive sprocket 325 and the second driven sprocket 44 are connected by a chain 45. In this embodiment, the drive module 2 drives the lower rotating shaft 321 to rotate, and the second driving sprocket 325 on the lower rotating shaft 321 rotates accordingly. This, in turn, drives the second driven sprocket 44 on the transmission shaft 43 to rotate via the chain 45, thereby causing the transmission shaft 43 to rotate. When the transmission shaft 43 rotates, the first driving sprocket 413 on it also rotates, driving the drag chain 411, which is fitted onto the first driving sprocket 413 and several first driven sprockets 414, to move. The two drag chains 411 operate synchronously, realizing the operation of the chain drive assembly 41. To ensure that the drag chain 411 does not sag when conveying fruit, this embodiment provides a guide rail 412. The top surface of the guide rail 412 contacts the bottom surface of the drag chain 411 to support the drag chain 411, keeping it stable on the guide rail 412. The supporting component 42 consists of several support rods 421, which are connected between two chain drive components 41 and move with the drag chain 411 to support and transport the fruit and plastic wrap. The supporting component 42 has a through slot; when the lower horizontal sealing mold 32 performs a horizontal sealing operation, the lower horizontal sealing mold 32 can pass through the through slot and cooperate with the upper horizontal sealing mold 31 to seal the plastic wrap laterally. The entire conveying module 4, through the coordinated work of the chain drive components 41 and the supporting component 42, achieves stable transport of the fruit and plastic wrap, while providing the necessary conditions for the operation of the horizontal sealing module 3, ensuring the smooth progress of the packaging process.

[0041] Preferably, the drive module 2 includes a servo motor 21, a worm gear reducer 22, and a connecting flange 23. The worm gear reducer 22 is mounted on the side of the frame 1 via the connecting flange 23. The output end of the servo motor 21 is connected to the worm gear reducer 22, and the output end of the worm gear reducer 22 is connected to the horizontal sealing module 3. In this embodiment, the working process is as follows: The servo motor 21 is powered on and starts, generating power at its output end, which is transmitted to the worm gear reducer 22 connected to it. The worm gear reducer 22 reduces the speed output of the servo motor 21 and increases the torque through its internal worm and worm wheel transmission structure. The power after reduction and torque increase is transmitted to the horizontal sealing module 3 through the output end of the worm gear reducer 22, thereby driving other components in the horizontal sealing module 3 to work and realize operations such as horizontal sealing of the plastic wrap. Throughout the process, the connecting flange 23 serves to securely mount the worm gear reducer 22 on the side of the frame 1, ensuring the connection stability between the drive module 2 and the frame 1, and enabling reliable power transmission to the horizontal sealing module 3.

[0042] Preferably, it also includes a top plate 7, on which a rotatable adjusting bolt 8 is provided, the adjusting bolt 8 being threadedly connected to the top of the frame 1; a protective cover is installed on the top plate 7.

[0043] In this embodiment, the top plate 7 is equipped with a rotatable adjusting bolt 8, which is threadedly connected to the top of the frame 1. By rotating the adjusting bolt 8, the distance between the top plate 7 and the frame 1 can be adjusted, allowing for fine-tuning of the height or position of related components mounted on the top plate 7, such as protective covers and other equipment parts. Alternatively, the top plate 7 can be fixed to the packaging machine to achieve overall height adjustment of the frame 1. The protective cover installed on the top plate 7 provides protection for the internal components of the equipment.

[0044] Compared with existing technologies, the advantages of this invention are as follows: This invention integrates the drive module, horizontal sealing module, conveying module, and air blowing module onto a single frame, with each module working closely together to make the overall structure of the packaging machine more compact. A pair of air blowing units in the air blowing module are arranged on both sides of the fruit conveying channel, with air blowing holes on the sides of the air blowing pipes. Just before the horizontal sealing module is about to seal and cut, compressed air is ejected from the air blowing pipes on both sides of the fruit, squeezing out excess air from the plastic wrap and achieving the purpose of venting, further optimizing the packaging effect. No manual intervention is required, and the venting efficiency is high. This invention has a reasonable design and simple structure. While ensuring stable venting of the fruit plastic wrap before horizontal sealing and cutting, it effectively reduces production costs and is easy to promote and use.

[0045] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A cross-sealing mechanism for fruit cling film packaging, characterized by, The application relates to a fruit packaging machine, which comprises a frame (1), a driving module (2), a transverse sealing module (3), a conveying module (4) and a blowing module (5) arranged on the frame; the driving module is in transmission connection with the transverse sealing module; the transverse sealing module is in transmission connection with the conveying module; the conveying module is used for conveying fruits and preservative films; and the transverse sealing module seals the preservative films in the transverse direction to form packaging bags. The blowing module comprises a pair of blowing units (51), and the blowing units are arranged on the top of the conveying module on both sides; the blowing unit comprises a mounting seat and a blowing pipe (511); the mounting seat is connected with the frame; the blowing pipe is arranged on the mounting seat; one end of the blowing pipe is connected with a compressed air source; the other end of the blowing pipe is provided with a plug (512); and a plurality of blowing holes (5111) are arranged on the side of the blowing pipe and face the conveying module.

2. The cross-sealing mechanism for fruit wrap packaging according to claim 1, wherein, The mounting seat comprises a pair of clamps (513), and the clamps are connected with the blowing pipe; a strip-shaped through slot (5131) is arranged on the clamp; and a fastening bolt is arranged on the strip-shaped through slot and is in threaded connection with the frame.

3. The cross-sealing mechanism for fruit wrap packaging according to claim 1, wherein The length direction of the blowing pipe is arranged in parallel with the fruit conveying direction on the conveying module.

4. The cross-sealing mechanism for fruit wrap packaging according to claim 1, wherein The length of the blowing pipe is 230-250 mm; the outer diameter of the blowing pipe is 7-9 mm; the inner diameter of the blowing pipe is 5.5-6.5 mm; the number of the blowing holes is 4-6; the diameter of the blowing hole is 1-2 mm; and the interval between two adjacent blowing holes is 20-30 mm.

5. The cross-sealing mechanism for fruit wrap packaging according to claim 1, wherein The transverse sealing module comprises an upper transverse sealing part (31) and a lower transverse sealing part (32); the upper transverse sealing part comprises an upper rotating shaft (311), a driven wheel (312) and a pair of upper transverse sealing dies (313); the upper transverse sealing dies are symmetrically arranged on the two sides of the upper rotating shaft; and the driven wheel is arranged on the end of the upper rotating shaft; the lower transverse sealing part comprises a lower rotating shaft (321), a driving wheel (322) and a pair of lower transverse sealing dies (323); the lower transverse sealing dies are symmetrically arranged on the two sides of the lower rotating shaft; the driving wheel is arranged on one end of the lower rotating shaft; the other end of the lower rotating shaft is connected with the driving module; and the driving wheel is in meshing connection with the driven wheel.

6. The cross-sealing mechanism for fruit wrap packaging according to claim 5, wherein The upper rotating shaft is connected with the frame through a pair of buffer assemblies (6); the buffer assembly comprises a sliding block (61), a pressing block (62), a guide rod (63) and a spring (64); the upper rotating shaft is connected with the sliding block through a bearing; the two sides of the sliding block are in sliding connection with the frame; a recess is arranged on the sliding block; the pressing block is arranged on the frame; the bottom of the pressing block is connected with the guide rod; and the spring is sleeved on the guide rod and abuts against the bottom of the recess.

7. The cross-sealing mechanism for fruit wrap packaging according to claim 5, wherein The end of the upper rotating shaft is provided with an upper brush assembly (314) for supplying power to the upper transverse sealing mold, and the end of the lower rotating shaft is provided with a lower brush assembly (324) for supplying power to the lower transverse sealing mold; the other end of the lower rotating shaft is provided with an induction block (33), the driving module is provided with a switch bracket (34), and a proximity switch is arranged on the switch bracket and matched with the induction block.

8. The cross-sealing mechanism for fruit wrap packaging according to claim 5, wherein The conveying module comprises two symmetrically arranged chain transmission assemblies (41), and the two chain transmission assemblies are connected through a supporting assembly (42) and a transmission shaft (43). The supporting assembly is composed of a plurality of supporting rods (421), and a through slot is arranged on the supporting assembly for the lower transverse sealing mold to pass through. The chain transmission assembly comprises a drag chain (411), a guide rail (412), a first driving sprocket (413) and a plurality of first driven sprockets (414). The first driven sprocket is rotatably connected with the rack, the first driving sprocket is arranged on the transmission shaft, and the drag chain is sleeved on the first driving sprocket and the first driven sprocket. A second driven sprocket (44) is arranged on the transmission shaft, and a second driving sprocket (325) is arranged on the lower rotating shaft, and the second driving sprocket and the second driven sprocket are connected through a chain (45).

9. The cross-seal mechanism for fruit wrap packaging according to claim 1, wherein The driving module comprises a servo motor (21), a worm reducer (22) and a connecting flange (23). The worm reducer is installed on the side surface of the rack through the connecting flange. The output end of the servo motor is connected with the worm reducer, and the output end of the worm reducer is connected with the transverse sealing module.

10. The cross-sealing mechanism for fruit wrap packaging according to any one of claims 1 to 9, wherein A top plate (7) is further arranged, and a rotatable adjusting bolt (8) is arranged on the top plate and is threadedly connected with the top of the rack. A protective cover is arranged on the top plate.

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