Automatic sealing machine for food packaging carton

Abstract

The invention relates to the field of carton sealing, in particular to an automatic sealing machine for food packaging cartons, which comprises a chain scraper conveyor and a carton body, two automatic sealing machine main bodies are mounted on the chain scraper conveyor, and a steering mechanism is arranged between the two automatic sealing machine main bodies. Through cooperation of the steering mechanism, the carton pushing mechanism and the downward pressing mechanism, after transverse packaging of the carton body is completed and the carton body is conveyed to the bearing disc, the bearing disc can drive the carton body to automatically rotate by 90 degrees, and therefore automatic steering of the carton body can be achieved; the carton body can be conveyed to the next automatic sealing machine main body for longitudinal packaging after steering, the stopping time of the carton body can be greatly shortened in the whole packaging process, no electric device needs to be added, and therefore the packaging efficiency of the carton body can be improved, and the packaging efficiency of the carton body can be improved. And the subsequent maintenance of the device is simpler and more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of carton sealing, and in particular to an automatic sealing machine for food packaging cartons. Background Art

[0002] Food packaging cartons are paper containers used to package food, mainly made of corrugated cardboard. Packaging cartons have the advantages of being lightweight (paper materials are used, which are easier to handle and transport than other packaging materials), sturdy (the corrugated paper gives the carton a certain degree of compression resistance and shock resistance, which can effectively protect food from damage during transportation and storage), environmentally friendly (recyclable and reusable, in line with environmental protection requirements, and can gradually decompose in the natural environment to reduce environmental pollution), and customizable (can be customized according to customer needs, such as size, shape, printing pattern, etc., to meet the personalized needs of food companies). After storing food in the carton, it needs to be sealed with a sealing machine.

[0003] At present, when using a sealing machine to seal cartons, in order to ensure the firmness of the sealing, the cartons need to be sealed with tape in both horizontal and vertical directions. However, when the existing sealing machine completes the horizontal sealing of the carton, it is necessary to first use a lifting cylinder to lift the carton, and then use a steering motor to turn the carton before the carton can be sealed vertically. The whole process not only has low continuity, affecting the packaging efficiency of the carton, but also requires the use of multiple electrical components, making subsequent maintenance more troublesome.

[0004] Therefore, the present invention provides an automatic sealing machine for food packaging cartons to solve the above problems. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an automatic sealing machine for food packaging cartons to solve the problem that when the existing sealing machine seals the cartons with horizontal and vertical tapes, not only the whole process has low continuity, which affects the packaging efficiency of the cartons, but also requires the use of multiple electrical components, making subsequent maintenance more troublesome.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: An automatic sealing machine for food packaging cartons, comprising a chain conveyor and a carton body, wherein two automatic sealing machine bodies are installed on the chain conveyor, a steering mechanism is arranged between the two automatic sealing machine bodies, the steering mechanism comprises a shell body fixedly installed on the side plate of the chain conveyor, a support seat is fixedly connected to the front of the shell body, a bearing plate is rotatably installed on the top of the support seat, a first rotating shaft is rotatably installed inside the support seat, and one end of the first rotating shaft extends to the inside of the shell body and is rotatably connected to the shell body, a rotating block is fixedly connected to the outer surface of the first rotating shaft, a rectangular groove for the rotating block to rotate is provided inside the support seat, and the rotating block and the bearing plate are connected through a linkage assembly; A box pushing mechanism for pushing the carton body is installed on the chain plate of the chain conveyor, and a pressing mechanism for releasing the contact between the box pushing mechanism and the carton body is installed on the side plate of the chain conveyor.

[0007] Preferably, the linkage assembly includes an L-shaped plate slidably connected to the inside of the shell, and the L-shaped plate is fixedly connected to a first tooth plate on a side close to the support seat, and the first rotating shaft is fixedly connected to a first gear on the outer surface of the inner part of the shell, and the first gear is meshed with the first tooth plate.

[0008] Preferably, a first support plate is fixedly connected to the upper surface of the L-shaped plate, a first spring is fixedly connected to one side surface of the first support plate, and the other end of the first spring is fixedly connected to the inner wall of the shell.

[0009] Preferably, the upper surface of the L-shaped plate is fixedly connected to a second support plate, and the second support plate is fixedly connected to a second tooth plate on a side close to the support seat, a third rotating shaft is rotatably installed inside the shell, a one-way bearing is installed on the outer surface of the third rotating shaft, a second gear is installed on the one-way bearing, and the second gear is meshed with the second tooth plate.

[0010] Preferably, a second rotating shaft is rotatably installed inside the support seat, the top end of the second rotating shaft is fixedly connected to the bottom of the carrying plate, the outer surface of the second rotating shaft is fixedly connected to the first synchronous wheel, the outer surface of the third rotating shaft is fixedly connected to the second synchronous wheel, and the second synchronous wheel is connected to the first synchronous wheel through a synchronous belt transmission.

[0011] Preferably, the pushing box mechanism includes a third support plate fixedly connected to the chain of the chain conveyor, and the third support plate is located on the front side of the support seat, a slide groove is opened inside the third support plate, a second spring is fixedly connected inside the slide groove, and a slide plate is fixedly connected to the other end of the second spring, and a side of the slide plate away from the second spring slides through the third support plate and is fixedly connected to a push plate, and the bottom surface of the push plate is flush with the top of the carrying plate.

[0012] Preferably, a first wedge block is fixedly connected to a side of the push plate away from the slide plate.

[0013] Preferably, the pressing mechanism is a second wedge block, the second wedge block is fixedly connected to the side plate of the chain conveyor, and the second wedge block is adapted to the first wedge block.

[0014] Preferably, a first centering mechanism is arranged on the left side of one of the automatic sealing machine bodies, and the first centering mechanism includes two first mounting plates, and the two first mounting plates are respectively fixedly connected to the two side plates of the chain conveyor, and the sides of the two first mounting plates close to each other are fixedly connected to the first centering plates, and the sides of the two first centering plates close to each other are fixedly connected to the first centering rollers, and a first channel for the carton body to pass through is formed between the two first centering rollers.

[0015] Preferably, a second centering mechanism is arranged on the left side of the other main body of the automatic sealing machine, and the second centering mechanism includes two second mounting plates, and the two second mounting plates are respectively fixedly connected to the two side plates of the chain conveyor, and the sides of the two second mounting plates close to each other are fixedly connected to the second centering plates, and the sides of the two second centering plates close to each other are fixedly connected to the second centering rollers, and a second channel for the carton body to pass through is formed between the two second centering rollers, and the width of the second channel is greater than the width of the first channel.

[0016] The beneficial effects of the present invention are: 1. The present invention cooperates with the steering mechanism, the box pushing mechanism and the pressing mechanism. After completing the transverse packaging of the carton body and transporting the carton body to the carrying plate, the carrying plate can drive the carton body to automatically rotate ninety degrees, thereby realizing automatic steering of the carton body. After the carton body is turned, the carton body can be immediately transported to the next automatic sealing machine body for longitudinal packaging. The entire packaging process can greatly reduce the stop time of the carton body, and there is no need to add any electrical components, which can not only improve the packaging efficiency of the carton body, but also make the subsequent maintenance of the device easier.

[0017] 2. The present invention provides a first centering mechanism so that the carton body can be located in the middle of the chain conveyor before the carton body is transversely packaged. The present invention provides a second centering mechanism so that the carton body can be located in the middle of the chain conveyor before the carton body is longitudinally packaged, thereby improving the packaging effect of the carton body.

[0018] 3. The present invention provides a one-way bearing, which can prevent the second gear from driving the third rotating shaft to rotate when the carton body moves onto the carrying plate, thereby preventing the carrying plate from rotating and affecting the steering effect of the carton body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A magnified schematic diagram of the structure at center A; Figure 3 It is a structural schematic diagram of the carton body, the steering mechanism, the box pushing mechanism and the pressing mechanism of the present invention; Figure 4 It is a structural schematic diagram of the support base and the carrying plate of the present invention; Figure 5 It is a schematic diagram of the internal structure of the housing of the present invention; Figure 6 It is a structural schematic diagram of the linkage assembly of the present invention; Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at B in the middle; Figure 8 For the present invention Figure 6 A magnified schematic diagram of the structure at C in the middle; Fig. 9 It is a schematic diagram of the connection between the support seat and the first rotating shaft of the present invention; Fig.10 A schematic diagram of the connection between the first synchronous wheel and the second synchronous wheel of the present invention; Fig.11 It is a structural schematic diagram of the box pushing mechanism and the pressing mechanism of the present invention; Fig.12 It is a schematic diagram of the positions of the first wedge block and the second wedge block when the carton body of the present invention moves onto the carrying plate; Fig.13 It is a schematic diagram of the positions of the first wedge block and the second wedge block when the carton body of the present invention is turned; Fig.14 It is a schematic diagram of the positions of the first wedge block and the second wedge block after the carton body of the present invention is turned.

[0020] In the figure: 1. chain conveyor; 2. automatic sealing machine body; 3. carton body; 4. support seat; 5. shell; 6. bearing plate; 7. rectangular groove; 8. first rotating shaft; 9. rotating block; 10. first gear; 11. L-shaped plate; 12. first tooth plate; 13. first support plate; 14. first spring; 15. second support plate; 16. second tooth plate; 17. second rotating shaft; 18. third rotating shaft; 19. one-way bearing; 20. second gear; 21. first synchronous wheel; 22. second synchronous wheel; 23. accommodating groove; 24. third support plate; 25. slide plate; 26. push plate; 27. first wedge block; 28. second wedge block; 29. ​​second spring; 30. slide groove; 31. first centering roller; 32. first mounting plate; 33. first centering plate; 34. second centering roller; 35. second mounting plate; 36. second centering plate. DETAILED DESCRIPTION

[0021] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0022] like Figure 1 As shown, an automatic sealing machine for food packaging cartons includes a chain conveyor 1 and a carton body 3. Two automatic sealing machine bodies 2 are installed on the chain conveyor 1. The model of the automatic sealing machine body 2 is Xinyan FXJ6050. When the chain conveyor 1 conveys the carton body 3 to the automatic sealing machine body 2, the automatic sealing machine body 2 can automatically position and seal the carton body 3. After sealing, the tape can be automatically cut off. The automatic sealing machine body 2 on the left is used to transversely seal the carton body 3, and the automatic sealing machine body 2 on the right is used to longitudinally seal the carton body 3.

[0023] like Figure 1 and Figure 2 As shown, a steering mechanism is arranged between the two automatic sealing machine bodies 2, and the steering mechanism includes a shell 5 fixedly mounted on the side plate of the chain conveyor 1, and a support seat 4 is fixedly connected to the front of the shell 5, and the support seat 4 is located above the chain plate of the chain conveyor 1 and is close to the chain plate. A carrying plate 6 for carrying the carton body 3 is rotatably mounted on the top of the support seat 4, and chamfers are arranged on both sides of the support seat 4 and the top of the carrying plate 6. By setting the chamfers, it is convenient to push the carton body 3 onto the carrying plate 6.

[0024] like Figure 3-6 , Figure 8 and Fig. 9As shown, a first rotating shaft 8 is rotatably installed inside the support seat 4, and one end of the first rotating shaft 8 extends to the inside of the shell body 5 and is rotatably connected to the shell body 5, a rotating block 9 is fixedly connected to the outer surface of the first rotating shaft 8, a rectangular groove 7 for the rotating block 9 to rotate is provided inside the support seat 4, the rotating block 9 and the carrier plate 6 are connected by a linkage assembly, and the linkage assembly includes an L-shaped plate 11 slidably connected to the inside of the shell body 5, a T-shaped boss is provided on the back of the L-shaped plate 11, and a T-shaped groove adapted to the T-shaped boss is provided inside the shell body 5, a first toothed plate 12 is fixedly connected to a side of the L-shaped plate 11 close to the support seat 4, and a first gear 10 is fixedly connected to the outer surface of the first rotating shaft 8 located inside the shell body 5, and the first gear 10 and the first gear 10 are connected to each other. The plates 12 are meshed with each other, and the upper surface of the L-shaped plate 11 is fixedly connected with the first support plate 13, and one side of the first support plate 13 is fixedly connected with the first spring 14, and the other end of the first spring 14 is fixedly connected to the inner wall of the shell 5. When the carton body 3 is transported in the direction of the carrying plate 6, the carton body 3 first contacts with the rotating block 9, and then the carton body 3 continues to move and presses the rotating block 9 to rotate downward. The downward movement of the rotating block 9 can drive the first rotating shaft 8 and the first gear 10 to rotate downward. The downward rotation of the first gear 10 can drive the first tooth plate 12, the L-shaped plate 11 and the first support plate 13 to move to the left and compress the first spring 14. After the rotating block 9 is completely pressed into the inside of the rectangular groove 7, the carton body 3 can be smoothly pushed onto the carrying plate 6.

[0025] like Figure 6 , Figure 7 and Fig.10 As shown, the upper surface of the L-shaped plate 11 is fixedly connected to the second support plate 15, and the second support plate 15 is fixedly connected to the second tooth plate 16 on one side close to the support seat 4. A third rotating shaft 18 is rotatably installed inside the shell 5, and a one-way bearing 19 is installed on the outer surface of the third rotating shaft 18. A second gear 20 is installed on the one-way bearing 19, and the second gear 20 is meshed with the second tooth plate 16. The L-shaped plate 11 moves to the left to drive the second support plate 15 and the second tooth plate 16 to move to the left. Under the action of the one-way bearing 19, the second tooth plate 16 moves to the left to drive the second gear 20 to idle, and the third rotating shaft 18 will not rotate with the second gear 20.

[0026] like Figure 8 and Fig. 9As shown, the support seat 4 is internally rotatably installed with a second rotating shaft 17, the top of the second rotating shaft 17 is fixedly connected to the bottom of the carrier plate 6, the outer surface of the second rotating shaft 17 is fixedly connected to the first synchronous wheel 21, the outer surface of the third rotating shaft 18 is fixedly connected to the second synchronous wheel 22, and the second synchronous wheel 22 is connected to the first synchronous wheel 21 through a synchronous belt transmission. The bottom of the support seat 4 is provided with a receiving groove 23 for avoiding the first synchronous wheel 21 and the synchronous belt. When the box pushing mechanism and the carton body 3 are completely moved to the right side of the rotating block 9, under the action of the first spring 14, The L-shaped plate 11, the first tooth plate 12 and the second tooth plate 16 will move to the right to reset. The movement of the first tooth plate 12 to the right will drive the first gear 10 and the rotating block 9 to rotate upward. The movement of the second tooth plate 16 to the right can drive the second gear 20 and the third rotating shaft 18 to rotate. The rotation of the third rotating shaft 18 can drive the second synchronous wheel 22, the first synchronous wheel 21 and the carrying plate 6 to rotate. The rotation of the carrying plate 6 can drive the carton body 3 to rotate. When the rotating block 9 rotates upward to reset, the rotation angle of the carrying plate 6 and the carton body 3 is ninety degrees, thereby realizing the steering of the carton body 3.

[0027] like Figure 2 and Figure 11-14 As shown, a box pushing mechanism for pushing the carton body 3 is installed on the chain plate of the chain conveyor 1, and the box pushing mechanism includes a third support plate 24 fixedly connected to the chain plate of the chain conveyor 1, and the third support plate 24 is located at the front side of the support seat 4, and the chain plate on the chain conveyor 1 is a metal plate. By setting the chain plate as a metal plate, the third support plate 24 can be prevented from tilting during the movement, and a slide groove 30 is provided inside the third support plate 24, and a second spring 29 is fixedly connected inside the slide groove 30, and a slide plate 25 is fixedly connected to the other end of the second spring 29, and a side of the slide plate 25 away from the second spring 29 slides through the third support plate 24 and is fixedly connected to a push plate 26, and the bottom surface of the push plate 26 is flush with the top of the carrier plate 6, and the push plate A first wedge block 27 is fixedly connected to a side of 26 away from the slide plate 25, and a plurality of box pushing mechanisms are evenly distributed on the chain plate of the chain conveyor 1. When the carton body 3 is sealed, the carton body 3 is first placed horizontally on the chain plate and the carton body 3 is made close to the push plate 26, and then the chain conveyor 1 is started. The chain conveyor 1 can control the carton body 3 and the box pushing mechanism to move synchronously to the right. When the carton body 3 moves to the automatic sealing machine body 2 on the left, the automatic sealing machine body 2 can automatically perform horizontal sealing on the carton body 3. After that, when the carton body 3 continues to move to the support seat 4, the push plate 26 will first push the carton body 3 onto the support seat 4, and then push the carton body 3 to press over the rotating block 9 and move to the carrying plate 6.

[0028] like Figure 2 and Figure 11-14As shown, a pressing mechanism for releasing the contact between the box pushing mechanism and the carton body 3 is installed on the side plate of the chain conveyor 1, and the pressing mechanism is a second wedge block 28, and the second wedge block 28 is fixedly connected to the side plate of the chain conveyor 1, and the second wedge block 28 is adapted to the first wedge block 27. When the first wedge block 27 in the box pushing mechanism moves to contact with the second wedge block 28, the push plate 26 and the first wedge block 27 continue to move to the right, and the second wedge block 28 will squeeze the first wedge block 27 to move downward. The downward movement of the first wedge block 27 can drive the push plate 26 and the slide plate 25 to move downward and compress the second spring 29. At this time, the push plate 26 still pushes the carton body 3 and presses the rotating block 9. When the first wedge block 27 is completely moved to the bottom of the second wedge block 28, the push plate 26 will completely move to the bottom of the carton body 3 and no longer press the rotating block 9. At this time, the push plate 26 is located in the gap between the carton body 3 and the carrying plate 6. The distance that the push plate 26 moves to the right will not exceed the distance that the carton body 3 is offset to the right, so that the push plate 26 can always be on the left side of the carton body 3. When the first wedge block 27 and the push plate 26 are completely moved to the right side of the second wedge block 28, under the action of the second spring 29, the push plate 26 continues to move to the right along the gap, while the slide plate 25, the push plate 26 and the first wedge block 27 move upward to reset. After that, the push plate 26 continues to move to the right to push the carton body 3 off the carrying plate 6, and then push the carton body 3 to the automatic sealing machine main body 2 on the right for longitudinal packaging, thereby realizing automatic sealing of the carton body 3.

[0029] like Figure 1As shown, a first centering mechanism is arranged on the left side of one of the automatic sealing machine bodies 2, and the first centering mechanism includes two first mounting plates 32, and the two first mounting plates 32 are respectively fixedly connected to the two side plates of the chain conveyor 1, and the two first mounting plates 32 are fixedly connected to the first centering plates 33 on the sides close to each other, and the two first centering plates 33 are fixedly connected to the first centering rollers 31 on the sides close to each other, and a first channel for the carton body 3 to pass through is formed between the two first centering rollers 31, and a second centering mechanism is arranged on the left side of the other automatic sealing machine body 2, and the second centering mechanism includes two second mounting plates 35, and the two second mounting plates 35 are respectively fixedly connected to the two side plates of the chain conveyor 1, and the two second mounting plates 35 are fixedly connected to the second centering plates 36 on the sides close to each other. The second centering plates 36 are fixedly connected to the second centering rollers 34 on the sides close to each other, and a second channel for the carton body 3 to pass through is formed between the two second centering rollers 34, and the width of the second channel is greater than that of the first channel, and the first centering plate 33 and the first centering roller 31 are both inclined plates inclined inwardly, and the first centering plate 33 is provided with a first centering mechanism on the side close to the center of the chain conveyor 1 and the first centering roller 31 is provided on the side close to the center of the chain conveyor 1, which can center the carton body 3 in the horizontal state, thereby facilitating the horizontal packaging of the carton body 3, and the second centering mechanism can center the carton body 3 in the horizontal state, thereby facilitating the horizontal packaging of the carton body 3.

[0030] Working principle: When sealing the carton body 3, first place the carton body 3 horizontally on the chain plate and make the carton body 3 close to the push plate 26, then start the chain plate conveyor 1, the chain plate conveyor 1 can control the carton body 3 and the box pushing mechanism to move synchronously to the right, when the carton body 3 moves to the automatic sealing machine body 2 on the left, the automatic sealing machine body 2 can automatically seal the carton body 3 horizontally, and then the carton body 3 continues to move to the support seat 4, the carton body 3 first contacts the rotating block 9, and then the carton body 3 continues to move and presses the rotating block 9 to rotate downward, the downward movement of the rotating block 9 can drive the first rotating shaft 8 and the first gear 10 to rotate downward, and the downward rotation of the first gear 10 can drive the first tooth plate 12, the L-shaped plate 11 and The first support plate 13 moves to the left and compresses the first spring 14. After the rotating block 9 is completely pressed into the inside of the rectangular groove 7, the carton body 3 can be smoothly pushed onto the carrying plate 6. The L-shaped plate 11 moves to the left to drive the second support plate 15 and the second tooth plate 16 to move to the left. Under the action of the one-way bearing 19, the second tooth plate 16 moves to the left to drive the second gear 20 to rotate idly, and the third rotating shaft 18 will not rotate with the second gear 20. When the first wedge block 27 in the box pushing mechanism moves to contact the second wedge block 28, the push plate 26 and the first wedge block 27 continue to move to the right, and the second wedge block 28 squeezes the first wedge block 27 to move downward. The downward movement of the first wedge block 27 can drive the push plate 26 and the slide plate 25 to move downward The push plate 26 is moved and compressed the second spring 29. At this time, the push plate 26 still pushes the carton body 3 and presses the rotating block 9. When the first wedge block 27 is completely moved to the bottom of the second wedge block 28, the push plate 26 will be completely moved to the bottom of the carton body 3 and no longer press the rotating block 9. At this time, the push plate 26 is located in the gap between the carton body 3 and the carrier plate 6. Therefore, while the push plate 26 continues to move to the right along the gap, under the action of the first spring 14, the L-shaped plate 11, the first tooth plate 12 and the second tooth plate 16 will move to the right to reset. The movement of the first tooth plate 12 to the right will drive the first gear 10 and the rotating block 9 to rotate upward. The movement of the second tooth plate 16 to the right can drive the second gear 20 and the third rotating shaft 18 to rotate. The rotation of the third rotating shaft 18 can drive The second synchronous wheel 22, the first synchronous wheel 21 and the carrying plate 6 rotate, and the rotation of the carrying plate 6 can drive the carton body 3 to rotate. When the rotating block 9 rotates upward to reset, the rotation angle of the carrying plate 6 and the carton body 3 is ninety degrees, so that the carton body 3 can be turned. When the first wedge block 27 and the push plate 26 are completely moved to the right side of the second wedge block 28, under the action of the second spring 29, the push plate 26 continues to move to the right while the slide plate 25, the push plate 26 and the first wedge block 27 will move upward to reset. After that, the push plate 26 continues to move to the right to push the carton body 3 off the carrying plate 6, and then push the carton body 3 to the automatic sealing machine body 2 on the right for longitudinal packaging, thereby realizing automatic sealing of the carton body 3.

[0031] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An automatic sealing machine for food packaging cartons, comprising a chain conveyor (1) and a carton body (3), characterized in that: Two automatic sealing machine bodies (2) are installed on the chain conveyor (1), and a steering mechanism is arranged between the two automatic sealing machine bodies (2). The steering mechanism comprises a shell (5) fixedly installed on the side plate of the chain conveyor (1), a support seat (4) is fixedly connected to the front of the shell (5), a bearing plate (6) is rotatably installed on the top of the support seat (4), a first rotating shaft (8) is rotatably installed inside the support seat (4), and one end of the first rotating shaft (8) extends to the inside of the shell (5) and is rotatably connected to the shell (5), a rotating block (9) is fixedly connected to the outer surface of the first rotating shaft (8), a rectangular groove (7) for the rotating block (9) to rotate is opened inside the support seat (4), and the rotating block (9) and the bearing plate (6) are connected via a linkage assembly; A box-pushing mechanism for pushing the carton body (3) is installed on the chain plate of the chain conveyor (1), and a pressing mechanism for releasing the contact between the box-pushing mechanism and the carton body (3) is installed on the side plate of the chain conveyor (1).

2. The automatic sealing machine for food packaging carton according to claim 1, characterized in that: The linkage assembly comprises an L-shaped plate (11) slidably connected to the interior of the housing (5); a first toothed plate (12) is fixedly connected to a surface of the L-shaped plate (11) close to the support seat (4); a first gear (10) is fixedly connected to an outer surface of a portion of the first rotating shaft (8) located inside the housing (5); and the first gear (10) is meshed with the first toothed plate (12).

3. The automatic sealing machine for food packaging carton according to claim 2, characterized in that: A first support plate (13) is fixedly connected to the upper surface of the L-shaped plate (11), a first spring (14) is fixedly connected to one side surface of the first support plate (13), and the other end of the first spring (14) is fixedly connected to the inner wall of the housing (5).

4. The automatic sealing machine for food packaging carton according to claim 2, characterized in that: The upper surface of the L-shaped plate (11) is fixedly connected to a second support plate (15); a surface of the second support plate (15) close to the support seat (4) is fixedly connected to a second toothed plate (16); a third rotating shaft (18) is rotatably mounted inside the housing (5); a one-way bearing (19) is mounted on the outer surface of the third rotating shaft (18); a second gear (20) is mounted on the one-way bearing (19), and the second gear (20) is meshed with the second toothed plate (16).

5. The automatic sealing machine for food packaging carton according to claim 4, characterized in that: A second rotating shaft (17) is rotatably mounted inside the support seat (4); the top end of the second rotating shaft (17) is fixedly connected to the bottom of the carrier plate (6); the outer surface of the second rotating shaft (17) is fixedly connected to a first synchronous wheel (21); the outer surface of the third rotating shaft (18) is fixedly connected to a second synchronous wheel (22); and the second synchronous wheel (22) and the first synchronous wheel (21) are connected via a synchronous belt transmission.

6. The automatic sealing machine for food packaging carton according to claim 1, characterized in that: The box pushing mechanism comprises a third support plate (24) fixedly connected to the chain plate of the chain conveyor (1), and the third support plate (24) is located on the front side of the support seat (4), a slide groove (30) is provided inside the third support plate (24), a second spring (29) is fixedly connected inside the slide groove (30), and a slide plate (25) is fixedly connected to the other end of the second spring (29), and a side of the slide plate (25) away from the second spring (29) slides through the third support plate (24) and is fixedly connected to a push plate (26), and the bottom surface of the push plate (26) is flush with the top of the supporting plate (6).

7. The automatic sealing machine for food packaging carton according to claim 6, characterized in that: A first wedge block (27) is fixedly connected to a surface of the push plate (26) away from the slide plate (25).

8. The automatic sealing machine for food packaging carton according to claim 7, characterized in that: The pressing mechanism is a second wedge block (28), the second wedge block (28) is fixedly connected to a side plate of the chain conveyor (1), and the second wedge block (28) is adapted to the first wedge block (27).

9. The automatic sealing machine for food packaging carton according to claim 1, characterized in that: A first centering mechanism is provided on the left side of one of the automatic sealing machine bodies (2), the first centering mechanism comprising two first mounting plates (32), the two first mounting plates (32) being fixedly connected to two side plates of the chain conveyor (1), respectively; the mutually adjacent sides of the two first mounting plates (32) are both fixedly connected to a first centering plate (33), the mutually adjacent sides of the two first centering plates (33) are both fixedly connected to a first centering roller (31), and a first passage for the carton body (3) to pass through is formed between the two first centering rollers (31).

10. The automatic sealing machine for food packaging carton according to claim 9, characterized in that: A second centering mechanism is arranged on the left side of the other automatic sealing machine body (2), the second centering mechanism comprising two second mounting plates (35), the two second mounting plates (35) being fixedly connected to two side plates of the chain conveyor (1) respectively, the two second mounting plates (35) being fixedly connected to second centering plates (36) on their mutually adjacent sides, the two second centering plates (36) being fixedly connected to second centering rollers (34) on their mutually adjacent sides, a second channel for the carton body (3) to pass through is formed between the two second centering rollers (34), and the width of the second channel is greater than the width of the first channel.

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