Wrapping mechanism of a three-dimensional wrapping machine

Abstract

The present invention discloses a wrapping mechanism of a three-dimensional wrapping machine, comprising a frame, a main folding device, and a side folding device. A push plate that can be lifted up and down is provided below the main folding device. The main folding device comprises a positioning component, a front and rear folding component, and a bottom folding component. The positioning component comprises an upper baffle and a rear push plate that can move back and forth. The front and rear folding components comprise a front baffle and a rear baffle. A packaging film station is provided below the front and rear folding components. The bottom folding component comprises a supporting plate that can move back and forth. The side folding device comprises a side inserting component, the side inserting component comprises a front inserting plate and a rear inserting plate that can move back and forth. The front inserting plate and the rear inserting plate are both provided with two left and right pieces, and the rear inserting plate is provided on both sides of the rear push plate. During the packaging process, the positioning component positions the material so that the packaging film wraps the material tightly, preventing the packaging film from becoming loose, thereby improving the packaging quality.

Description

Technical Field

[0001] The present invention relates to an improved invention of a three-dimensional wrapping machine, which is used for packaging articles such as medicine boxes and cigarettes, and particularly relates to a wrapping mechanism of the three-dimensional wrapping machine. Background Art

[0002] Medicine boxes, cigarettes and other items are easy to deteriorate at high temperatures and cannot be packaged using heat shrink machines. Therefore, existing boxed products such as medicine boxes and cigarettes are mainly packaged manually. Manual packaging is not only inefficient and costly, but also the quality of manual wrapping is uneven. Some are too loose and not tight enough, making the packaging unsightly and easily causing damage to the packaging film. Summary of the Invention

[0003] In view of the technical problems existing in the background technology, the technical problem solved by the present invention is to provide a wrapping mechanism of a three-dimensional wrapping machine, which can realize automatic wrapping of boxed materials, and the wrapping is tight and the packaging quality is better.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: the wrapping mechanism of the three-dimensional wrapping machine includes a frame, a main body folding device and a side folding device, which is characterized in that a push plate that can be lifted up and down is provided below the main body folding device, the main body folding device includes a positioning component, a front and rear folding component and a bottom folding component, the positioning component includes an upper baffle and a rear push plate that moves back and forth, the upper baffle is arranged above the front and rear folding components, the front and rear folding components include a front baffle and a rear baffle, a packaging film station is provided below the front and rear folding components, and the bottom folding component includes a support plate that moves back and forth; the side folding device includes a side inserting component, the side inserting component includes a front inserting plate and a rear inserting plate that moves back and forth, the front inserting plate and the rear inserting plate are both provided with two left and right pieces, and the rear inserting plate is arranged on both sides of the rear push plate.

[0005] A bottom sealing device is provided below the front insert plate, and the bottom sealing device includes a heat sealing mold that rises and falls.

[0006] The rear board is mounted on the mounting seat, and the rear board swings left and right on the mounting seat.

[0007] The rear plug-in plate is hinged to the mounting seat, and the rear plug-in plate is provided with a force causing its rear end to tilt toward the rear push plate.

[0008] The distance between the front baffle and the rear baffle matches the length of the wrapped material, and the rear baffle can move forward and backward relative to the front baffle.

[0009] The frame is provided with a longitudinally arranged guide rail, and the rear baffle is slidably arranged on the guide rail.

[0010] The mounting seat is mounted on the moving seat, the two rear plug-in plates are mounted on the two mounting seats respectively, and the two mounting seats can move left and right on the moving seat; the rear push plate is mounted on the moving seat; the moving seat is connected to a transmission component that drives it to move forward and backward.

[0011] The positioning component also includes a rear positioning piece, which is vertically mounted on the rear baffle. A wire groove is provided on the support plate for the rear positioning piece to pass through.

[0012] The side folding device also includes upper and lower folding parts, which are arranged in front of the front and rear folding parts. The upper and lower folding parts include a workbench, an upper guide groove and a lower guide groove. The upper guide groove is inclined upward along the conveying direction, and the lower guide groove is inclined downward along the conveying direction.

[0013] The upper guide groove and the lower guide groove are mainly composed of an upper guide plate, an intermediate plate and a lower guide plate. The upper guide plate and the intermediate plate form the upper guide groove, and the lower guide plate and the intermediate plate form the lower guide groove.

[0014] The present invention wraps the boxed material through the main body folding device and the side folding device. During the packaging process, the positioning component positions the material so that the packaging film wraps the material tightly, preventing the packaging film from loosening and improving the packaging quality. Moreover, the present invention is adjusted according to the specifications of the wrapped material, suitable for packaging materials of different specifications, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a partial schematic diagram of the present invention.

[0017] Figure 3 Schematic diagram of the side insert component of the present invention.

[0018] Figure 4 This is a top view of the side insertion component of the present invention before side insertion.

[0019] Figure 5 This is a top view of the side insertion component of the present invention when it is side inserted. DETAILED DESCRIPTION

[0020] The following describes the details and working principles of the embodiments and examples of the present invention in conjunction with the accompanying drawings. The wrapping mechanism of this three-dimensional wrapping machine includes a frame 1, a main body folding device 90 and a side folding device. A push plate that can be lifted up and down is provided below the main body folding device. The main body folding device includes a positioning component, a front and rear folding component and a bottom folding component. The positioning component includes an upper baffle 77 and a rear push plate 87 that can move back and forth. The upper baffle is set above the front and rear folding components and extends forward to the top of the side folding. The rear push plate can push the material into the side folding station. The front and rear folding components include a front baffle 84 and a rear baffle 82. The distance between the front baffle and the rear baffle matches the length of the wrapped material and forms a front and rear folding channel. This station is the front and rear folding station. A packaging film station 83 is provided below the front and rear folding components, that is, the packaging film is placed at the packaging film station.

[0021] The bottom folding component includes a support plate 75 that moves back and forth, and the support plate is inserted so that the rear end of the packaging film is wrapped around the lower end of the material, and the support plate 75 holds the material; the side folding device includes a side inserting component, and the side inserting component includes a front inserting plate 79 and a rear inserting plate 60, 65 that moves back and forth, and the front inserting plate and the rear inserting plate are both provided with two left and right pieces, and the rear inserting plate is provided on both sides of the rear push plate 87. When the support plate 75 holds the material, the rear inserting plates 60, 65 are inserted to fold the two sides of the rear end of the packaging film inward and fit the material; the push plate pushes the material upward to enter the front and rear folding channel formed by the front baffle 84 and the rear baffle 82, and the front baffle and the rear baffle cause the packaging film covering the material to fold downward along the front and rear end of the material, and the packaging film is wrapped around the upper end surface and the front and rear end surfaces of the material, and the material continues to move up and enter the bottom folding station, and the support plate 75 moves forward to The rear end of the film is wrapped around the lower end of the material and supports the material. After the rear insert plates 60 and 65 are inserted, the two sides of the rear end of the packaging film are folded inward, and the rear insert plate and the rear push plate 87 continue to move forward to push the material forward and pass through the front baffle 84. The front baffle wraps the front end of the packaging film around the lower end of the material, and the front end of the packaging film covers the rear end. The overlapping part of the two is the bottom sealing part. During the above process, the support plate 75 always supports the material to keep the packaging film and the material in a tight state; when the rear push plate 87 pushes the material forward, it passes through the front insert plate 79, and the front insert plate folds the two sides of the front end of the packaging film inward and fits the material. The rear insert plate and the rear push plate 87 move forward synchronously, and the rear insert plate keeps the folded part of the rear end side folded in a folded state and in a tight state. The product wrapped in this way is tightly wrapped and has a beautiful appearance. After the wrapping operation is completed, the rear insert plate, the push plate and the support plate move backward and reset.

[0022] The side folding device also includes upper and lower folding parts, which are arranged in front of the front and rear folding parts. The upper and lower folding parts include a workbench 91, an upper guide groove 80 and a lower guide groove 81. The upper guide groove is inclined upward along the conveying direction, and the lower guide groove is inclined downward along the conveying direction. The upper guide groove and the lower guide groove can be formed by guide rods. In this embodiment, the upper guide groove and the lower guide groove are mainly composed of an upper guide plate, an intermediate plate 85 and a lower guide plate 86; the upper guide plate and the intermediate plate form an upper guide groove 80, and the lower guide plate 86 and the intermediate plate 85 form a lower guide groove 81. The inlet end of the upper guide groove is at the lower end, and the outlet end is at the upper end. The inlet end of the lower guide groove is at the upper end, and the outlet end is at the lower end. For the sake of compact structure, the front insert plate 79 can replace the upper guide plate. The insert plate can be used not only as a front insert plate, but also as an upper guide plate. The upper guide groove 80 folds the lower surface of the packaging film upward, and the lower guide groove 81 folds the upper surface of the packaging film downward; the rear push plate pushes the material through the front insert plate and continues to move forward, then enters the side folding station, and the two sides of the packaging film complete the side folding along the upper guide groove 80 and the lower guide groove 81.

[0023] In order to improve work efficiency, after the wrapping operation is completed, the rear insert plates 60, 65 and the support plate 75 can be reset in time and to ensure the wrapping quality. A bottom sealing device is provided under the front insert plate. The bottom sealing device includes a heat sealing die 78 that rises and falls. That is, the heat sealing die is used to heat-seal the above-mentioned bottom sealing part. After heat sealing, the rear insert plate and the support plate 75 can be retreated and reset. In this way, the packaging film wrapped around the material will not loosen.

[0024] In order to make the packaging more compact, the distance between the two rear insert plates 60, 65 and the two front insert plates 79 is similar to the width of the material and cannot be too large. In order to ensure that the rear insert plates and the front insert plates can be inserted smoothly without colliding with the material, the insertion ends of the rear insert plates and the front insert plates are tilted outwards, that is, the size of the insertion ends is larger than the width of the material. Other solutions can also be used, see the attached Figure 3-5The rear insert plate includes a left insert plate 60 and a right insert plate 65. The rear insert plate is mounted on a mounting seat 68 and swings left and right on the mounting seat. Before side insertion, the left insert plate 60 and the right insert plate 65 are tilted, and the insertion ends of the two insert plates are larger than the other ends, that is, the front end of the distance between the left insert plate 60 and the right insert plate 65 is larger than the rear end, so that the material can enter the insertion end smoothly and the material will not collide with the left and right insert plates. When side insertion is performed, the left and right insert plates swing toward each other, and the two insert plates are straight. The left and right inserting plates 60 and 65 are arranged in parallel. At this time, the distance between the left and right inserting plates is matched with the width of the wrapped material, that is, the distance between the left and right inserting plates is similar to the width of the material, which cannot be too large or too small, so that the wrapping can be tight. As the material enters, the left and right inserting plates fold the packaging films on both sides of the material inward, so that the packaging film fits on both sides of the material. The present invention not only makes the packaging film and the material tightly wrapped but not loose, but also avoids collision between the material and the inserting plates, avoids damage to the surface of the material, and greatly improves the wrapping quality.

[0025] The rear plate can be swung left and right on the mounting base 68 by various means: First, the rear plate is hinged to the mounting base and connected to a power element that drives its swinging; the power element can be a cylinder mounted on the mounting base, the piston rod of the cylinder connected to the rear plate, and the cylinder drives the rear plate to swing left and right on the mounting base. The cylinder drive can also be replaced by a screw mechanism combined with a motor; to make the swinging of the rear plate more stable, the mounting base is provided with a guide groove, and the lower end of the rear plate is provided with a guide block, which is placed in the guide groove and slides within the guide groove when the rear plate swings. Second, the rear plate is hinged to the mounting base, and a force is provided on the left and right plates 60 and 65 to bring their rear ends closer together. That is, before side insertion, the left and right plates are tilted, and the distance between their front ends is larger than the distance between their rear ends. The force can also be applied in different ways. First, one end of the rear insert plate is connected to one end of a tension spring, and the other end of the tension spring is connected to the mounting base. The tension of the tension spring pulls the rear ends of the left and right insert plates closer together, so that the rear insert plate is set obliquely. When the material enters between the two insert plates, due to the narrow distance between the rear ends of the two insert plates, the material squeezes the two insert plates, overcoming the tension of the tension spring and making the two insert plates parallel. Second, see attached Figure 1 and 2The mounting seat 68 is provided with a transversely arranged guide rod 69, one end 70 of the guide rod is connected to the mounting seat, and the other end of the guide rod is provided with a limit block 62, and the guide rod is also provided with a second limit block 74. The rear end 63 of the rear insert plate is movably arranged on the guide rod 69, and the guide rod is provided with a spring 67 acting on the rear insert plate. The elastic force of the same spring makes the rear ends of the left insert plate 60 and the right insert plate 65 close to each other, so that the left and right insert plates are arranged obliquely. The limit block 62 prevents the left and right insert plates from tilting excessively and prevents the rear ends of the insert plates from escaping from the guide rod. When the material enters between the two insert plates, the material squeezes the two insert plates and overcomes the elastic force of the spring 67, so that the originally obliquely arranged insert plate becomes a straight setting. At this time, the insert plate is in contact with the second limit block 74, and the second limit block 74 also prevents the insert plate from tilting in the opposite direction, so that the insert plate remains straight when inserted from the side.

[0026] To quickly straighten the left and right inserts, stops 64 are installed on the sides of the rear insert. These stops are positioned opposite each other, at the front end of the rear insert, and perpendicular to the insert. When material enters the insertion end of the left and right inserts, it presses against the stops 64. When the left and right inserts tilt, the material's end faces form an angle with the stops. The pressure of the material on the stops overcomes the spring force or tension of the tension spring, quickly straightening the left and right inserts. The material's end faces align with the stops 64, thus improving the folding effect. The front end 73 of the insert is arc-shaped, preventing it from scratching the material or packaging film, thereby improving the quality of overwrapping. A reinforcement plate 66 is installed on the other side of the rear insert. The reinforcement plate 66 is mounted at the rear end of the rear insert. The force driving the rear insert to swing is applied to the reinforcement plate, thereby increasing the strength of the rear insert and extending its service life. Due to the different widths of materials, in order to be suitable for different material packaging, the mounting base 68 is movably mounted on the movable base 62, that is, the left and right insert plates can be moved horizontally on the movable base; for easy installation, the movable base is provided with a horizontally arranged mounting groove 72. After adjusting the positions of the left and right insert plates, the locking bolt 71 passes through the mounting groove and is connected to the mounting base 68 to fix the mounting base on the movable base 61; the above structure is also applicable to the front insert plate, which can be selected according to needs.

[0027] In order to be suitable for the packaging of materials of different specifications, the rear baffle 82 can move forward and backward relative to the front baffle 84, and the distance between the front and rear baffles can be adjusted to adapt to materials of different lengths. The frame is provided with a longitudinally arranged guide rail, and the rear baffle is slidably arranged on the guide rail. The rear baffle moves forward and backward on the guide rail. The movement of the rear baffle can be manual, and after the adjustment is completed, it can also be locked by a locking screw, or the rear baffle can be driven to move by a screw mechanism; the moving seat 61 is connected to a transmission component that drives it to move forward and backward. The transmission component can be a cylinder. In this embodiment, the transmission component includes a transmission wheel, a transmission belt arranged on the transmission wheel, and a motor that drives the transmission wheel to rotate. The moving seat is connected to the transmission belt. To ensure stable operation, a linear guide rail 76 is also provided on the frame, and the moving seat 61 moves along the linear guide rail. The rear push plate is installed on the moving seat, and the forward and backward movement of the moving seat will drive the rear push plate to move. In order to improve the positioning effect, the positioning component also includes a rear positioning member 89, and the rear positioning member is vertically installed on the rear baffle 82. A wire groove 88 for the rear positioning member to pass through is opened on the support plate 75. The rear positioning member is used as the rear end positioning of the material. After passing through the front and rear baffles, the material enters the bottom folding station. The material is limited by the rear positioning member 89, the upper baffle 77 and the previous folding material at the front end, and the folding effect is better.

[0028] When the present invention is working, the material is placed on the push plate, and the push plate moves up and passes through the packaging film station. The packaging film covers the material and then moves up to enter the front and rear folding stations. The front and rear baffles fold the front and rear ends of the packaging film downward along the surface of the material. At this time, the packaging film covers the upper surface, front end and rear end of the material, and then the material enters the bottom folding station, and the support plate 75 extends to fold the rear end of the packaging film forward so that it covers the lower end surface of the material and supports the material. Then the rear insert plates 60 and 65 extend to fold the two sides of the rear end of the packaging film inward. At this time, the rear push plate 87 pushes the material forward, and the rear insert plate moves forward synchronously to avoid the completed folded part from becoming loose. When the material moves forward, the front end of the material After passing through the front baffle 84 and the front insert plate 79, the front baffle folds the front end of the packaging film backward and covers the bottom of the material. The front insert plate 79 causes the two sides of the front end of the packaging film to fold inward. The front end of the packaging film is folded backward due to the front baffle, and the front end of the material enters the workbench 91, and the lower end of the packaging film enters the upper guide groove 80 and folds upward. The upper end of the packaging film enters the lower guide groove 81 and folds downward. When the packaging film completes the upper and lower folding, the front end of the packaging film covers the rear end of the packaging film, and the heat-sealing mold 78 moves upward to seal the bottom heat-sealed part. The rear push plate 87, the support plate 75 and the rear insert plates 60 and 65 move backward and reset. The material that completes the wrapping operation waits for the next material to be pushed forward to the next process.

Claims

1. A wrapping mechanism of a three-dimensional wrapping machine, comprising a frame, a main body folding device, and a side folding device, characterized in that: A push plate that can be lifted up and down is provided below the main body folding device. The main body folding device includes a positioning component, front and rear folding components and a bottom folding component. The positioning component includes an upper baffle, a rear positioning member, and a rear push plate that moves forward and backward, and the upper baffle is arranged above the front and rear folding components; The front and rear folding components include a front baffle and a rear baffle, the rear positioning member is vertically mounted on the rear baffle, the spacing between the front baffle and the rear baffle matches the length of the wrapped material, and form a front and rear folding channel, and a packaging film station is provided below the front and rear folding components; The bottom folding component includes a supporting plate that moves forward and backward, and a wire groove is provided on the supporting plate for the rear positioning member to pass through; The side folding device includes a side inserting component, and the side inserting component includes a front inserting plate and a rear inserting plate that moves forward and backward. The front inserting plate and the rear inserting plate are both provided with left and right pieces. The rear inserting plate is provided on both sides of the rear push plate, and the rear inserting plate is installed on the mounting seat, and the rear inserting plate is hinged to the mounting seat. The rear inserting plate includes a left inserting plate and a right inserting plate. Before side insertion, the left inserting plate and the right inserting plate are tilted, and the insertion ends of the two inserting plates are larger than the other ends. When side insertion is performed, the left and right inserting plates swing toward each other, and the two inserting plates are arranged straightly. The spacing between the left inserting plate and the right inserting plate matches the width of the wrapped material. The material is placed on the pushing plate, which moves up and passes through the packaging film station. The packaging film covers the material and then moves up to enter the front and rear folding stations. The front baffle and the rear baffle cause the front and rear ends of the packaging film to fold downward along the surface of the material. After the material passes through the front and rear baffles, it enters the bottom folding station, and the supporting plate extends to fold the rear end of the packaging film forward so that it covers the lower end surface of the material and supports the material. Then the rear insert plate extends to fold the two sides of the rear end of the packaging film inward. At this time, the rear pushing plate pushes the material forward, and the rear insert plate moves forward synchronously. When the material moves forward, the front end of the material passes through the front baffle and the front insert plate, and the front baffle folds the front end of the packaging film backward and covers the bottom of the material. The front insert plate causes the two sides of the front end of the packaging film to fold inward, and the front end of the packaging film is folded backward due to the front baffle.

2. The wrapping mechanism of the three-dimensional wrapping machine according to claim 1 is characterized in that A bottom sealing device is provided below the front insert plate, and the bottom sealing device includes a heat sealing mold that rises and falls.

3. The wrapping mechanism of the three-dimensional wrapping machine according to claim 1 is characterized in that One end of the rear board is connected to one end of a tension spring, and the other end of the tension spring is connected to a mounting seat.

4. The wrapping mechanism of the three-dimensional wrapping machine according to claim 1, characterized in that A transversely arranged guide rod is installed on the mounting seat, one end of the guide rod is connected to the mounting seat, the other end of the guide rod is provided with a limit block, and the guide rod is also provided with a second limit block. The rear end of the rear plug-in plate is movably arranged on the guide rod, and the guide rod is provided with a spring acting on the rear plug-in plate.

5. The wrapping mechanism of the three-dimensional wrapping machine according to claim 3 or 4, characterized in that A stopper is installed on the side of the rear insert plate, and the stoppers on the left insert plate and the right insert plate are arranged opposite to each other. The stopper is arranged perpendicular to the rear insert plate. When the material enters the insertion end of the left and right insert plates, the material is pressed against the stopper, overcoming the elastic force of the spring or the tension of the tension spring, so that the left and right insert plates quickly become flat, and the end surface of the material fits against the stopper.

6. The wrapping mechanism of the three-dimensional wrapping machine according to claim 1, characterized in that The rear baffle can move forward and backward relative to the front baffle.

7. The wrapping mechanism of the three-dimensional wrapping machine according to claim 6, characterized in that The frame is provided with a longitudinally arranged guide rail, and the rear baffle is slidably arranged on the guide rail.

8. The wrapping mechanism of the three-dimensional wrapping machine according to claim 3, characterized in that The mounting seat is mounted on the moving seat, the two rear plug-in plates are mounted on the two mounting seats respectively, and the two mounting seats can move left and right on the moving seat; the rear push plate is mounted on the moving seat; the moving seat is connected to a transmission component that drives it to move forward and backward.

9. The wrapping mechanism of the three-dimensional wrapping machine according to claim 1, characterized in that The side folding device also includes upper and lower folding parts, which are arranged in front of the front and rear folding parts. The upper and lower folding parts include a workbench, an upper guide groove and a lower guide groove. The upper guide groove is inclined upward along the conveying direction, and the lower guide groove is inclined downward along the conveying direction.

10. The wrapping mechanism of the three-dimensional wrapping machine according to claim 9, characterized in that The upper guide groove and the lower guide groove are mainly composed of an upper guide plate, an intermediate plate and a lower guide plate. The upper guide plate and the intermediate plate form the upper guide groove, and the lower guide plate and the intermediate plate form the lower guide groove.

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