A hot pressing sealing device of a vacuum packaging machine for food packaging

Abstract

The present invention relates to the field of hot pressing and sealing technology, and specifically discloses a hot pressing and sealing device of a vacuum packaging machine for food packaging, including an installation guide bin, an electric push rod is installed at the bottom of the installation guide bin, and the output end of the electric push rod is connected to a movable installation bin. The present invention is provided with a transmission mechanism on the movable installation bin to drive the flat head installation roller body to rotate, and a refrigeration cooling plate and a hot pressing plate body are provided on the flat head installation roller body, so that during the sealing process, when the output shaft rotates continuously, the flat head installation roller body can be driven to rotate and stay for a period of time through an incomplete cage gear and an arc-shaped limiting block and a transmission mechanism, so that the hot pressing plate body can be matched to perform hot pressing on the sealing part, and then the refrigeration cooling plate can quickly cool and shape the hot pressing part as a whole, so that the packaging bag can be more fully cooled and shaped before it is taken out, thereby ensuring the quality of subsequent products.

Description

Technical Field

[0001] The invention relates to the technical field of hot-pressing and sealing, and in particular to a hot-pressing and sealing device of a vacuum packaging machine for food packaging. Background Art

[0002] Food preservation has always been one of the important issues in society. With the continuous progress of society, compared with traditional pickling, modern food preservation methods have longer preservation time and higher quality after preservation. Vacuum packaging is one of the typical ways to preserve food in modern times. The air in the packaging bag is extracted by a vacuum packaging machine. After vacuum packaging, the food can resist oxidation, thereby achieving the purpose of long-term preservation. During the use of the vacuum packaging machine, in addition to being able to extract the air in the packaging bag, the vacuum packaging machine can generally seal the bag mouth in time after the air is extracted, thereby preventing air from entering the packaging bag again. This operation is generally completed by a hot-pressing sealing device equipped inside the vacuum packaging machine;

[0003] When the existing hot-pressing sealing device of the vacuum packaging machine for food packaging is in use, it generally completes the sealing of the packaging bag by pressing down the hot pressing plate. During the hot-pressing process, the packaging bag will melt to a certain extent, and then the bag mouth will automatically fuse together after re-cooling, thereby completing the shaping and sealing task. During operation, cooling generally relies on natural heat dissipation. This method will result in a low complete cooling and shaping rate. Sometimes, the staff will take out the bag before it is fully cooled and shaped. In this process, the sealing part is prone to distortion, which will affect the seal at the final seal and the appearance quality of the product. Summary of the invention

[0004] The purpose of the present invention is to provide a hot-pressing sealing device for a vacuum packaging machine for food packaging, so as to solve the problem that the hot-pressing sealing device for a vacuum packaging machine for food packaging in the above-mentioned background has insufficient cooling and shaping efficiency, which easily causes the sealing part to twist and deform, affecting the final sealing effect and appearance quality.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A hot-pressing sealing device of a vacuum packaging machine for food packaging, comprising an installation guide bin, an electric push rod is installed at the bottom of the installation guide bin, and the output end of the electric push rod is connected to a movable installation bin, a second installation groove is opened on one side of the bottom of the movable installation bin, and a movable installation bar is arranged on one side of the second installation groove, a flat-head installation roller body is sleeved on the outer side of the movable installation bar, a refrigeration cooling plate is installed at the bottom of the flat-head installation roller body, and a hot pressing plate body is installed on the top of the flat-head installation roller body;

[0007] A motor is installed at the top of the movable installation bin, and an output shaft is connected to the output end of the motor, an incomplete cage gear is installed at the bottom end of the output shaft, and an arc-shaped limiting block is installed on the outer side of the incomplete cage gear, and a transmission mechanism for driving the flat head installation roller to rotate is provided on the movable installation bin;

[0008] A strip-shaped extrusion wheel is installed on the outer side of the output shaft, and an extrusion mechanism for driving the flat-head installation roller to move is provided on the movable installation bin;

[0009] A mounting through hole is provided at the top of the second mounting groove, and an elastic mechanism is provided in the mounting through hole, and the elastic mechanism is used to scrape the refrigeration cooling plate and the hot pressing plate body;

[0010] A T-shaped guide groove is provided at one end of the outer side wall of the flat-head mounting roller body, and an emptying mechanism for squeezing the bag opening of the packaging bag is arranged in the T-shaped guide groove.

[0011] As a further solution of the present invention: 6 groups of first installation grooves are opened at the bottom of the movable installation bin, and a guide column is arranged inside the first installation groove, a first spring is connected between the guide column and the movable installation bin, and a bag mouth pressing plate is installed at the bottom end of the guide column, and ventilation grooves are evenly opened at the bottom of the bag mouth pressing plate.

[0012] As a further solution of the present invention: the movable installation bar is in a square bar shape, and the movable installation bar is rotatably connected to the movable installation bin.

[0013] As a further solution of the present invention: a shaft support is sleeved on the outer side of the output shaft, and a side of the shaft support away from the second mounting groove is connected to the movable mounting bin.

[0014] As a further solution of the present invention: the transmission mechanism includes a rotating shaft, which is arranged on one side inside the movable mounting bin, and the rotating shaft passes through the movable mounting bin and extends to the inside of the second mounting groove, and one end of the rotating shaft close to the flat-head mounting roller body is connected to the movable mounting bar, and a flat-head cage gear body is installed on the outer side of the rotating shaft.

[0015] As a further solution of the present invention: the extrusion mechanism includes a movable rod body, the movable rod body passes through one side of the movable mounting bin, and the movable rod body extends to the inside of the second mounting groove, a first sliding plate is installed at one end of the movable rod body close to the strip extrusion wheel, a rotating ring is installed at one end of the movable rod body close to the flat head mounting roller body, and the rotating ring is connected to the flat head mounting roller body, and a fourth spring is connected between the first sliding plate and the movable mounting bin.

[0016] As a further solution of the present invention: the elastic mechanism includes a second sliding plate, the second sliding plate is arranged inside the mounting through hole, a connecting column is installed at the bottom of the second sliding plate, and a scraper collecting block is installed at the bottom end of the connecting column, a second spring is installed at the top of the second sliding plate, a mounting fixing plate is installed at the top of the second spring, and the mounting fixing plate is connected to the movable mounting bin by bolts.

[0017] As a further solution of the present invention: the scraper and collector block and the connecting column are made in one piece, and the cross-sectional shape of the scraper and collector block is a trapezoid.

[0018] As a further solution of the present invention: the emptying mechanism includes an installation sliding member, the installation sliding member is arranged inside the T-shaped guide groove, and a third installation groove is opened at one end of the installation sliding member away from the flat-head installation roller body, a wedge-shaped pushing member is arranged inside the third installation groove, and a third spring is connected between the wedge-shaped pushing member and the installation sliding member.

[0019] As a further solution of the present invention: the installation sliding member is "T"-shaped, and the length of the installation sliding member is greater than the length of the flat-head installation roller body.

[0020] Beneficial effects of the present invention:

[0021] The present invention provides a transmission mechanism on the movable installation bin to drive the flat-head installation roller to rotate, and provides a refrigeration cooling plate and a hot pressing plate body on the flat-head installation roller body, so that during the sealing process, when the output shaft rotates continuously, the flat-head installation roller body can be driven to rotate and stay for a period of time through the incomplete cage gear, the arc-shaped limiting block and the transmission mechanism, so that the hot pressing plate body can be matched to perform hot pressing on the sealing part, and then the refrigeration cooling plate can perform the overall action of quickly cooling and shaping the hot pressing part, so that the packaging bag can be more fully cooled and shaped before it is taken out, so as to avoid the sealing part being easily twisted and deformed in the subsequent operation process, thereby affecting the sealing degree and appearance quality of the seal;

[0022] The present invention provides an extrusion mechanism on the movable installation bin to drive the flat-head installation roller to move horizontally, and a strip-shaped extrusion wheel is provided on the output shaft, so that when the flat-head installation roller stops rotating and performs hot pressing or cooling operation through the hot pressing plate body or the refrigeration cooling plate, the flat-head installation roller can be driven to move horizontally, thereby further expanding the sealing and cooling range without increasing the length of the refrigeration cooling plate and the hot pressing plate body and excessive energy supply, thereby facilitating the sealing task of larger packaging bags, thereby greatly increasing the applicability of the device;

[0023] The present invention provides a scraping mechanism in the installation through hole, so that when the flat head installation roller body moves laterally to expand the hot pressing or cooling range, the scraping and collecting block can scrape and clean the surface of the refrigeration cooling plate or the hot pressing plate body that is not in a working state, thereby cleaning the adhesions that may be attached to the refrigeration cooling plate and the hot pressing plate body during operation, and at the same time, after being scraped, the adhesions can enter the interior of the scraping and collecting block along the oblique edge portion of the scraping and collecting block, thereby completing the collection task;

[0024] The present invention provides an emptying mechanism in the T-shaped guide groove, so that when the flat-head mounted roller body is rotated to switch from the refrigeration cooling plate to the hot pressing plate main body, the wedge-shaped pushing member can squeeze and scrape the bag opening to be hot pressed, thereby squeezing and pushing the oil and the like that may exist in the bag opening and flow into the bag opening from the food during vacuuming, thereby preventing the presence of these oil and the like in the bag opening to be sealed by hot pressing, causing a burnt smell during subsequent hot pressing or affecting the sealing after hot pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0028] Figure 3 The present invention Figure 2 A magnified schematic diagram of point A;

[0029] Figure 4 The present invention Figure 2 An enlarged schematic diagram of point B;

[0030] Figure 5 It is a side cross-sectional structural schematic diagram of the present invention;

[0031] Figure 6 It is a schematic diagram of the side cross-sectional structure of the flat head mounting roller body of the present invention;

[0032] Figure 7 The present invention Figure 6 A schematic diagram of the enlarged structure at C;

[0033] Figure 8 This is a schematic diagram of the main structure of the flat head mounted roller body in the present invention;

[0034] Fig. 9 It is a schematic diagram of the main structure of the incomplete cage gear in the present invention;

[0035] Fig.10It is a schematic diagram of the main structure of the bag mouth pressing plate in the present invention;

[0036] Fig.11 It is a schematic diagram of the main structure of the scraper and collector block in the present invention.

[0037] In the figure: 1. Installation guide bin; 2. Electric push rod; 3. Movable installation bin; 4. First installation slot; 5. Guide column; 6. First spring; 7. Bag opening pressing plate; 8. Ventilation groove; 9. Second installation slot; 10. Movable installation strip; 11. Flat head installation roller; 12. Refrigeration cooling plate; 13. Hot pressing plate body; 14. Motor; 15. Output shaft; 16. Incomplete cage gear; 17. Arc limiting block; 18. Strip extrusion wheel; 1 9. Shaft support; 20. Rotating shaft; 21. Flat-head cage gear body; 22. Movable rod; 23. First sliding plate; 24. Rotating ring; 25. Mounting through hole; 26. Second sliding plate; 27. Connecting column; 28. Scraping brush collecting block; 29. ​​Second spring; 30. Mounting fixing plate; 31. T-shaped guide groove; 32. Mounting sliding member; 33. Third mounting groove; 34. Wedge-shaped pushing member; 35. Third spring; 36. Fourth spring. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1, please refer to Figure 1-Figure 3 , Figure 5 as well as Figure 7-10 As shown, the present invention is a hot-pressing sealing device of a vacuum packaging machine for food packaging, comprising an installation guide bin 1, an electric push rod 2 is installed at the bottom of the installation guide bin 1, and the output end of the electric push rod 2 is connected to a movable installation bin 3, a second installation groove 9 is opened on one side of the bottom of the movable installation bin 3, and a movable installation bar 10 is arranged on one side of the second installation groove 9, a flat-head installation roller body 11 is sleeved on the outer side of the movable installation bar 10, a refrigeration cooling plate 12 is installed at the bottom of the flat-head installation roller body 11, and a hot pressing plate body 13 is installed on the top of the flat-head installation roller body 11;

[0040] The movable installation bar 10 is in a square shape, and the movable installation bar 10 is rotatably connected to the movable installation bin 3, and the flat-head installation roller body 11 can slide on the outer wall of the movable installation bar 10 at the same time;

[0041] The above-mentioned refrigeration cooling plate 12 and hot pressing plate body 13 can be powered by batteries or brushes, so that when the movable mounting bar 10 rotates during use, it can drive the flat head mounting roller body 11 to rotate, and then drive the refrigeration cooling plate 12 and the hot pressing plate body 13 on the flat head mounting roller body 11 to change positions, so that the electric push rod 2 can drive the movable mounting bin 3 to move up and down to complete the task of hot pressing or rapid cooling and shaping;

[0042] The bottom of the movable installation bin 3 is provided with 6 groups of first installation grooves 4, and the inside of the first installation grooves 4 is provided with guide columns 5, a first spring 6 is connected between the guide columns 5 and the movable installation bin 3, and a bag opening pressing plate 7 is installed at the bottom end of the guide columns 5, and ventilation grooves 8 are evenly provided at the bottom of the bag opening pressing plate 7;

[0043] When in use, the bag opening pressing plate 7 can cooperate with the fixing part of the packaging bag on the vacuum packaging machine to further press and fix the bag opening of the packaging bag, thereby ensuring the stability of the packaging bag during subsequent operations. At the same time, the bag opening pressing plate 7 will not affect the vacuuming task of the packaging bag when pressing the packaging bag. During vacuuming, air can pass normally through the ductility of the packaging bag and the ventilation groove 8;

[0044] A motor 14 is installed at the top of the movable installation bin 3, and an output shaft 15 is connected to the output end of the motor 14. An incomplete cage gear 16 is installed at the bottom end of the output shaft 15, and an arc-shaped limiting block 17 is installed on the outer side of the incomplete cage gear 16. A transmission mechanism for driving the flat-head installation roller body 11 to rotate is provided on the movable installation bin 3;

[0045] The outer side of the output shaft 15 is sleeved with a shaft support 19, and the side of the shaft support 19 away from the second mounting groove 9 is connected to the movable mounting chamber 3, and the shaft support 19 and the output shaft 15 are rotationally connected. During use, the shaft support 19 can stabilize the rotation of the output shaft 15;

[0046] The transmission mechanism includes a rotating shaft 20, which is arranged at one side of the movable installation bin 3, and the rotating shaft 20 passes through the movable installation bin 3 and extends to the inside of the second installation slot 9, and one end of the rotating shaft 20 close to the flat-head installation roller body 11 is connected to the movable installation bar 10, and a flat-head cage gear body 21 is installed on the outer side of the rotating shaft 20;

[0047] The motor 14, the electric push rod 2, the refrigeration cooling plate 12 and the hot pressing plate body 13 are electrically connected to the controller respectively, and the motor 14, the electric push rod 2, the refrigeration cooling plate 12 and the hot pressing plate body 13 are coordinated to be opened or closed by controlling the motor 14, the electric push rod 2, the refrigeration cooling plate 12 and the hot pressing plate body 13, and the rotating shaft 20 is rotatably connected to the movable mounting bin 3;

[0048] The top and bottom of the outer wall of the flat cage gear body 21 are both in a flat state, and the tooth block part and the arc-shaped limiting block 17 on the incomplete cage gear 16 are located at the opposite part of the incomplete cage gear 16, so that when the half-circle tooth block on the incomplete cage gear 16 is meshed with the flat cage gear body 21, the arc-shaped limiting block 17 is located at a position away from the flat cage gear body 21, thereby not affecting the normal rotation of the flat cage gear body 21. When the half-circle tooth block on the incomplete cage gear 16 is not meshed with the flat cage gear body 21, the arc-shaped limiting block 17 fits with the upper and lower flat parts of the flat cage gear body 21, thereby limiting the rotation of the flat cage gear body 21, thereby ensuring the stability of the rotating shaft 20 and the flat cage gear body 21 when they are not meshed with the incomplete cage gear 16.

[0049] It should be noted that, in the initial state, the refrigeration cooling plate 12 on the flat-head mounting roller body 11 is located at its bottom, and the hot pressing plate body 13 is located at its top, the electric push rod 2 drives the movable mounting bin 3 to be located at the highest point in the stroke, and the half-circle tooth block on the incomplete cage gear 16 is located at a position about to mesh with the tooth block on the flat-head cage gear body 21. When in use, the packaging bag is placed in the vacuum packaging machine, and the packaging bag is fixed by the fixing part on the vacuum packaging machine, and then the controller controls the electric push rod 2 to drive the movable mounting bin 3 to move downward to near the lowest point of the stroke, at which time the first spring 6 is compressed, and the bag mouth pressing plate 7 presses the sealing part of the packaging bag, and cooperates with the fixing part on the vacuum packaging machine to fully fix the packaging bag;

[0050] Furthermore, after the above process is completed, the controller controls the vacuum packaging machine to extract the air in the packaging bag, and then the controller controls the motor 14 to rotate counterclockwise. As mentioned above, at this time, the incomplete cage gear 16 drives the flat-head cage gear body 21 to rotate half a circle, and the flat-head installation roller body 11 rotates half a circle accordingly. During this process, the controller will simultaneously drive the movable installation bin 3 to complete a corresponding up and down movement stroke, thereby ensuring that the flat-head installation roller body 11 can complete the rotation task without interfering with other parts. At the same time, this stroke will eventually make the hot pressing plate body 13 fit and squeeze the bag opening. At this time, the controller controls the hot pressing plate body 13 to start the hot pressing task on the bag opening;

[0051] In the above process, after the incomplete cage gear 16 drives the flat cage gear body 21 to rotate half a circle, the tooth block on the incomplete cage gear 16 is no longer meshed with the tooth block on the flat cage gear body 21. As mentioned above, at this time, the arc-shaped limiting block 17 fits with the flat part of the flat cage gear body 21, thereby ensuring the stability of the angles of the rotating shaft 20, the movable mounting bar 10 and the hot pressing plate body 13. In this process, the hot pressing plate body 13 can have sufficient time to complete the hot pressing task of the bag mouth;

[0052] Subsequently, after the incomplete cage gear 16 continues to rotate half a circle, the tooth block on the incomplete cage gear 16 meshes with the tooth block on the flat-head cage gear body 21 again. As mentioned above, at this time, the movable mounting bar 10 drives the flat-head mounting roller body 11 to rotate half a circle again. At the same time, the electric push rod 2 drives the movable mounting bin 3 to complete a stroke basically the same as the above operation. The refrigeration cooling plate 12 is now in contact with the hot-pressed part of the packaging bag. At the same time, the controller controls the hot pressing plate body 13 to close and the refrigeration cooling plate 12 to open, and the hot-pressed part is quickly cooled and formed. During this process, the motor 14 continues to drive the output shaft 15 to rotate until the incomplete cage gear 16 rotates half a circle again and is about to mesh with the flat-head cage gear body 21. At this time, the states of the incomplete cage gear 16 and the flat-head cage gear body 21 are the same as the initial state. At the same time, the controller controls the electric push rod 2 to drive the movable mounting bin 3 to move to the initial height to prepare for the next execution of the above-mentioned entire operation process.

[0053] Embodiment 2, based on the above embodiment 1, refer to Figure 1-Figure 3 , Figure 5 as well as Figure 7-10 As shown, a strip-shaped extrusion wheel 18 is installed on the outer side of the output shaft 15, and an extrusion mechanism for driving the flat-head installation roller body 11 to move is provided on the movable installation bin 3;

[0054] The extrusion mechanism includes a movable rod body 22, which penetrates one side of the movable installation bin 3 and extends to the inside of the second installation groove 9. A first sliding plate 23 is installed at one end of the movable rod body 22 close to the strip extrusion wheel 18, and a rotating ring 24 is installed at one end of the movable rod body 22 close to the flat head installation roller body 11, and the rotating ring 24 is connected to the flat head installation roller body 11. A fourth spring 36 is connected between the first sliding plate 23 and the movable installation bin 3;

[0055] The movable rod body 22 is slidably connected to the movable mounting chamber 3, and both ends of the strip extrusion wheel 18 are in a semicircular state;

[0056] It should be noted that, in the initial state, the strip extrusion wheel 18 is parallel to the longitudinal center axis of the movable mounting bin 3. Therefore, when the incomplete cage gear 16 drives the flat-head cage gear body 21 to rotate in the initial state, the semicircular part of the end plate of the strip extrusion wheel 18 can fit with the first sliding plate 23. At this time, the rotation of the output shaft 15 will not drive the first sliding plate 23 to move accordingly. When the incomplete cage gear 16 is not meshing with the flat-head cage gear body 21 and rotating, the longer part of the strip extrusion wheel 18 can squeeze the first sliding plate 23 for a stroke, thereby compressing the fourth spring 36, and the movable rod body 22 drives the flat-head mounting roller body 11 to move back and forth laterally for a stroke. At this time, the refrigeration cooling plate 12 or the hot pressing plate body 13 on the flat-head mounting roller body 11 is in the process of hot pressing and sealing or cooling and shaping the packaging bag below. Therefore, packaging belts of different widths can be hot pressed or cooled and shaped, which greatly increases the applicability of the device.

[0057] Example 3, based on the above examples 1-2, see Figure 1-Figure 2 as well as Fig.11 As shown, a mounting through hole 25 is provided at the top of the second mounting groove 9, and an elastic mechanism is provided in the mounting through hole 25, and the elastic mechanism is used to scrape the refrigeration cooling plate 12 and the hot pressing plate body 13;

[0058] The elastic mechanism includes a second sliding plate 26, which is arranged inside the mounting through hole 25, a connecting column 27 is installed at the bottom of the second sliding plate 26, and a scraper collecting block 28 is installed at the bottom end of the connecting column 27, a second spring 29 is installed at the top of the second sliding plate 26, and a mounting fixing plate 30 is installed at the top end of the second spring 29, and the mounting fixing plate 30 is connected to the movable mounting bin 3 by bolts;

[0059] The scraper and brush collection block 28 and the connecting column 27 are made in one piece, and the cross-sectional shape of the scraper and brush collection block 28 is a trapezoid, and the second sliding plate 26 and the mounting through hole 25 form a sliding structure;

[0060] When the flat-head mounting roller body 11 moves laterally, the refrigeration cooling plate 12 or the hot pressing plate body 13 located on the top of the flat-head mounting roller body 11 can rub against each other at the wedge-shaped angle on the side of the scraper collecting block 28. Therefore, during the hot pressing or cooling shaping process, impurities of the packaging bag melted and fixed on the refrigeration cooling plate 12 or the hot pressing plate body 13 that may be adhered thereto can be scraped off, and a large part of them will be squeezed by the subsequent impurities and enter the inside of the scraper collecting block 28 along the slopes on both sides of the scraper collecting block 28 for collection, thereby achieving the auxiliary cleaning task of the refrigeration cooling plate 12 and the hot pressing plate body 13, and reducing the frequency of cleaning of the refrigeration cooling plate 12 and the hot pressing plate body 13 by the staff;

[0061] It should be noted that, since the packaging bag will be melted to a certain extent during the hot pressing process, the refrigeration cooling plate 12 and the hot pressing plate body 13 may be partially melted and adhered to the packaging bag during the process of attaching the packaging bag. These adhered materials will continue to adhere to the refrigeration cooling plate 12 or the hot pressing plate body 13 after being fixed, causing insufficient flatness during subsequent pressing, thereby affecting the sealing or cooling and shaping effect.

[0062] At the same time, since the second sliding plate 26 and the mounting through hole 25 form a sliding structure, when the flat-head mounting roller body 11 rotates, when its corner passes through the scraper and brush collecting block 28, it can squeeze the scraper and brush collecting block 28, so that the scraper and brush collecting block 28 moves upward, so that the flat-head mounting roller body 11 can complete the rotation task without forming mutual obstruction with the scraper and brush collecting block 28;

[0063] Furthermore, a door is provided at one end of the guide bin 1, and the fixing plate 30 is connected to the movable bin 3 by bolts, so that the staff can open the door at one end of the guide bin 1 and release the bolt connection between the fixing plate 30 and the movable bin 3, and then the scraper mechanism can be taken out from the mounting through hole 25 from bottom to top, thereby facilitating the staff to clean the inside of the scraper collection block 28.

[0064] Example 4, based on the above examples 1-4, see Figure 1-Figure 2 as well as Figure 6-Figure 7 As shown, the emptying mechanism includes a mounting slide 32, which is arranged inside the T-shaped guide groove 31, and a third mounting groove 33 is formed at one end of the mounting slide 32 away from the flat head mounting roller body 11, a wedge-shaped pushing member 34 is arranged inside the third mounting groove 33, and a third spring 35 is connected between the wedge-shaped pushing member 34 and the mounting slide 32;

[0065] The mounting slide 32 is T-shaped, and the length of the mounting slide 32 is greater than the length of the flat head mounting roller body 11. The mounting slide 32 and the T-shaped guide groove 31 form a sliding structure;

[0066] When the flat-head installation roller body 11 rotates, the wedge-shaped extrusion member 34 can rotate accordingly, and when the flat-head installation roller body 11 moves laterally, the installation sliding member 32 will not move laterally therewith;

[0067] It should be noted that after the packaging bag is placed, the controller controls the electric push rod 2 to drive the movable installation bin 3 to move downward to the lowest point of the stroke. Then, after the vacuuming is completed, the incomplete cage gear 16 drives the flat cage gear body 21 to rotate half a circle, and the flat installation roller body 11 rotates half a circle accordingly, so as to cooperate with the implementation of the hot pressing task. In this process, the controller will simultaneously drive the movable installation bin 3 to complete a corresponding up and down movement stroke. In this stroke, the up and down movement amplitude driven by the controller to complete the movable installation bin 3 will not be too large, and only the corners of the flat installation roller body 11 and the refrigeration cooling plate 12 and the hot pressing plate body 13 thereon will not interfere with the packaging bags and other objects below.

[0068] Therefore, during this rotation process, the flat-head mounted roller body 11 is at a lower position in the stroke as a whole, so the bag mouth pressing plate 7 can fully press the packaging bag at this time, and at the same time, the wedge-shaped pushing member 34 will pass over the packaging bag below in a circular motion, and the wedge-shaped pushing member 34 will squeeze and scrape the position to be hot-pressed, thereby squeezing and pushing the oil in some foods that is brought into this place during the vacuuming process, so that the oil inside the sealing part of the packaging bag to be hot-pressed is squeezed and pushed to other positions, thereby preventing the oil from affecting the hot-pressing sealing degree or producing a burnt smell during the subsequent hot-pressing process.

[0069] Furthermore, the length of the mounting slide 32 matches the length inside the second mounting groove 9, so that when pushing and squeezing, it can ensure that the packaging bags of different sizes below are sealed. At the same time, balls can be further provided on both sides of the mounting slide 32, so that the mounting slide 32 will not have excessive friction with the inner wall of the second mounting groove 9 when the flat-head mounting roller body 11 rotates. Since there is only one set of mounting slides 32, the squeezing and pushing action will only be performed before the refrigeration cooling plate 12 is replaced by the hot pressing plate main body 13 to perform hot pressing work, thereby avoiding damage to the sealing part caused by performing this operation during cooling and shaping. Moreover, since the end of the wedge-shaped squeezing and pushing member 34 away from the mounting slide 32 is wedge-shaped, when contacting and squeezing with the scraper collection block 28, the wedge-shaped squeezing and pushing member 34 or the scraper collection block 28 will slide and avoid respectively, so that there will be no mutual interference to hinder the rotation of the flat-head mounting roller body 11.

[0070] The working principle of the present invention is as follows: the device is installed at the sealing position of the vacuum packaging machine and powered on for use. As mentioned above, in the initial state, the electric push rod 2 drives the movable installation bin 3 to be located at the highest point in the stroke. At this time, the staff can place the packaging bag directly below the flat head installation roller body 11, and then control the electric push rod 2 to drive the movable installation bin 3 to move down to a position close to the limit. At this time, the refrigeration cooling plate 12 does not contact the packaging bag, and the bag opening pressing plate 7 cooperates with the fixing part on the vacuum packaging machine to fully fix the packaging bag.

[0071] Then, the vacuum packaging machine is turned on to extract the air in the packaging bag. Then, as mentioned above, the controller controls the control motor 14 to rotate counterclockwise. During this process, the controller will simultaneously drive the movable mounting bin 3 to complete a corresponding up and down movement stroke. At the same time, this stroke will eventually make the hot pressing plate body 13 fit and squeeze the bag opening. At this time, the controller controls the hot pressing plate body 13 to start the hot pressing task at the bag opening. In this process, the wedge-shaped pushing member 34 will complete the above-mentioned task of squeezing and pushing the oil that may exist inside the sealing part.

[0072] Then, as mentioned above, the incomplete cage gear 16 continues to rotate half a circle and does not drive the flat-head mounted roller body 11 to rotate, giving sufficient hot pressing time. In this process, the strip extrusion wheel 18 drives the flat-head mounted roller body 11 to move back and forth horizontally for a stroke by pushing the first sliding plate 23 and the movable rod body 22, thereby ensuring that the hot pressing task is completed for packaging bags with a larger width. In this process, the scraper collection block 28 scrapes and cleans the attachments on the refrigeration cooling plate 12 due to the lateral movement of the flat-head mounted roller body 11.

[0073] Then the tooth block on the incomplete cage gear 16 meshes with the tooth block on the flat head cage gear body 21 again, and the flat head mounting roller body 11 rotates half a circle again. At the same time, the electric push rod 2 drives the movable mounting bin 3 to complete a stroke basically the same as the above operation. The refrigeration cooling plate 12 is now in contact with the hot pressed part of the packaging bag. At the same time, the controller controls the hot pressing plate body 13 to be closed and the refrigeration cooling plate 12 to be opened, so as to quickly cool and shape the hot pressed part. In this process, the wedge-shaped extrusion pusher 34 will not contact the sealing part of the packaging bag. The wheel 16 continues to rotate half a circle and will not drive the flat-head mounted roller body 11 to rotate, giving sufficient cooling and shaping time. In this process, the strip extrusion wheel 18 will again drive the flat-head mounted roller body 11 to move back and forth horizontally by pushing the first sliding plate 23 and the movable rod body 22, thereby ensuring that the cooling and shaping task is completed for packaging bags with a larger width. At the same time, the scraping and brushing collection block 28 is used to complete the scraping and brushing cleaning of the hot pressing plate body 13, and the incomplete cage gear 16 and the flat-head cage gear body 21 are restored to the initial state, ready for next use;

[0074] Finally, the controller controls the electric push rod 2 to drive the movable installation bin 3 to restore the initial height, and the vacuum packaging machine is opened to take out the sealed packaging bag.

[0075] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A hot-pressing sealing device for a vacuum packaging machine for food packaging, comprising a guide bin (1) for installation, characterized in that: An electric push rod (2) is installed at the bottom of the installation guide bin (1), and the output end of the electric push rod (2) is connected to a movable installation bin (3); a second installation groove (9) is provided on one side of the bottom of the movable installation bin (3), and a movable installation strip (10) is provided on one side of the second installation groove (9); a flat-head installation roller body (11) is sleeved on the outer side of the movable installation strip (10); a refrigeration cooling plate (12) is installed at the bottom of the flat-head installation roller body (11), and a hot pressing plate body (13) is installed on the top of the flat-head installation roller body (11); A motor (14) is installed at the top of the movable installation bin (3), and the output end of the motor (14) is connected to an output shaft (15), an incomplete cage gear (16) is installed at the bottom end of the output shaft (15), and an arc-shaped limiting block (17) is installed on the outer side of the incomplete cage gear (16), and a transmission mechanism for driving the flat-head installation roller body (11) to rotate is provided on the movable installation bin (3); A strip-shaped extrusion wheel (18) is installed on the outer side of the output shaft (15), and an extrusion mechanism for driving the flat-head installation roller body (11) to move is provided on the movable installation bin (3); A mounting through hole (25) is provided at the top of the second mounting groove (9), and an elastic mechanism is provided in the mounting through hole (25), and the elastic mechanism is used to scrape the refrigeration cooling plate (12) and the hot pressing plate body (13); A T-shaped guide groove (31) is formed at one end of the outer side wall of the flat-head mounting roller body (11), and a clearing mechanism for squeezing the bag opening of the packaging bag is arranged in the T-shaped guide groove (31); The extrusion mechanism comprises a movable rod body (22), the movable rod body (22) passes through one side of the movable installation bin (3), and the movable rod body (22) extends to the inside of the second installation groove (9), a first sliding plate (23) is installed at one end of the movable rod body (22) close to the strip extrusion wheel (18), a rotating ring (24) is installed at one end of the movable rod body (22) close to the flat-head installation roller body (11), and the rotating ring (24) is connected to the flat-head installation roller body (11), and a fourth spring (36) is connected between the first sliding plate (23) and the movable installation bin (3).

2. A hot-pressing sealing device for a vacuum packaging machine for food packaging according to claim 1, characterized in that: The bottom of the movable installation bin (3) is provided with six groups of first installation grooves (4), and a guide column (5) is arranged inside the first installation groove (4). A first spring (6) is connected between the guide column (5) and the movable installation bin (3), and a bag opening pressing plate (7) is installed at the bottom end of the guide column (5), and ventilation grooves (8) are evenly arranged at the bottom of the bag opening pressing plate (7).

3. A vacuum packaging machine hot-pressing sealing device for food packaging according to claim 1, characterized in that: The movable installation bar (10) is in the shape of a square bar, and the movable installation bar (10) is rotatably connected to the movable installation bin (3).

4. A vacuum packaging machine heat-pressing sealing device for food packaging according to claim 1, characterized in that: The output shaft (15) is sleeved with a shaft support member (19) on its outer side, and the side of the shaft support member (19) away from the second installation groove (9) is connected to the movable installation bin (3).

5. The hot-pressing sealing device of a vacuum packaging machine for food packaging according to claim 1, characterized in that: The transmission mechanism comprises a rotating shaft (20), the rotating shaft (20) being arranged at one side inside the movable installation bin (3), and the rotating shaft (20) passing through the movable installation bin (3) and extending to the inside of the second installation slot (9), and one end of the rotating shaft (20) close to the flat-head installation roller body (11) is connected to the movable installation bar (10), and a flat-head cage gear body (21) is installed on the outer side of the rotating shaft (20).

6. A vacuum packaging machine heat-pressing sealing device for food packaging according to claim 1, characterized in that: The elastic mechanism comprises a second sliding plate (26), the second sliding plate (26) being arranged inside the mounting through hole (25), a connecting column (27) being installed at the bottom of the second sliding plate (26), and a scraper collecting block (28) being installed at the bottom end of the connecting column (27), a second spring (29) being installed at the top of the second sliding plate (26), and a mounting fixing plate (30) being installed at the top end of the second spring (29), and the mounting fixing plate (30) being connected to the movable mounting bin (3) via bolts.

7. A hot-pressing sealing device for a vacuum packaging machine for food packaging according to claim 6, characterized in that: The scraper and brush collection block (28) and the connecting column (27) are manufactured in an integrated manner, and the cross-sectional shape of the scraper and brush collection block (28) is a trapezoid.

8. The hot-pressing sealing device of a vacuum packaging machine for food packaging according to claim 1, characterized in that: The emptying mechanism comprises a mounting slide (32), the mounting slide (32) being arranged inside the T-shaped guide groove (31), and a third mounting groove (33) being formed at one end of the mounting slide (32) away from the flat-head mounting roller body (11), a wedge-shaped pushing member (34) being arranged inside the third mounting groove (33), and a third spring (35) being connected between the wedge-shaped pushing member (34) and the mounting slide (32).

9. A vacuum packaging machine heat-pressing sealing device for food packaging according to claim 8, characterized in that: The mounting sliding member (32) is in a "T" shape, and the length of the mounting sliding member (32) is greater than the length of the flat-head mounting roller body (11).

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