Lateral lap joint heat seal film folding mechanism of horizontal wrapping machine and film folding method of lateral lap joint heat seal film folding mechanism

Abstract

The invention discloses a horizontal wrapping machine side lap joint heat seal film folding mechanism and a film folding method thereof, and relates to the technical field of horizontal wrapping machines, the horizontal wrapping machine side lap joint heat seal film folding mechanism comprises an operation table used for wrapping a rectangular box body. Through mutual cooperation of the side lap joint heat seal film folding assembly, the lifting assembly, the pushing assembly, the rotating assembly, the side folding assembly and other components, a heat seal soldering iron sufficiently abuts against the side, wound with the wrapping film end, of the rectangular box body in the transverse direction, and heat seal connection of the wrapping film end is achieved in a side lap joint heat seal film folding mode; due to the fact that the rectangular box body is flat and long, the area of the front side is small and the heat sealing position of the front side face is usually far away from the gravity center and the main stress point of materials in the side lap joint heat sealing film folding process, deformation caused by gravity or external pressure is reduced, and the problem that the center position of the rectangular box body is sunken is solved. And the wrapping film can be thermally sealed more uniformly, so that the thermal sealing effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of horizontal wrapping machines, and in particular to a side-lap heat-sealing film folding mechanism of a horizontal wrapping machine and a film folding method thereof. Background Art

[0002] Horizontal wrapping machine is an important industrial packaging equipment, widely used in many fields, such as foreign trade export, food and beverage, plastic chemical industry, glass ceramics, electromechanical castings, etc.

[0003] During the wrapping operation of a long rectangular box body by a horizontal wrapping machine, the wrapping film and the box body are heat-sealed by bottom overlapping heat sealing. However, due to the special shape of the box body, the center of the material is easily concave under the pressure of the wrapping film and its own gravity. This concavity makes it impossible for the wrapping film to fit tightly to the surface of the material during heat sealing, especially forming gaps at the concavity, resulting in incomplete heat sealing. Therefore, we propose a side overlapping heat sealing film folding mechanism and a film folding method for a horizontal wrapping machine. Summary of the invention

[0004] The object of the present invention is to provide a side overlapping heat sealing film folding mechanism and a film folding method for a horizontal wrapping machine, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a side-lap heat-sealing and film-folding mechanism of a horizontal wrapping machine, comprising an operating table for wrapping a rectangular box body, a bottom plate being arranged below the operating table, two sets of support frames for assisting in supporting the operating table being fixed between the operating table and the bottom plate, and further comprising:

[0006] A conveying assembly disposed on one side of the operating table for conveying a rectangular box body to be wrapped and a side overlapping heat sealing and film folding assembly disposed on the operating table for performing side overlapping heat sealing and film folding processing on the rectangular box body;

[0007] The conveying assembly includes a placing table arranged on one side of the operating table, a lifting platform that can be raised and lowered is arranged on the placing table, the rectangular box body is placed on the lifting platform, a conveying plate is arranged on the placing table, a pressing groove is opened on the conveying plate for pressing against the upper side of the rectangular box body, and a power source for pushing the conveying plate is arranged on the placing table;

[0008] The side overlap heat sealing and film folding assembly includes a slot opened on the operating table, a heat sealing iron for assisting the side overlap heat sealing and film folding process is arranged on the slot, a lifting assembly for lifting the heat sealing iron is arranged on the operating table, and two sets of side folding assemblies for side folding and extruding the two sides of the rectangular box body during the side overlap heat sealing and film folding process are arranged on the operating table;

[0009] The lifting assembly includes a lifting plate arranged below the operating table, the upper end of the lifting plate is slidably connected to the sliding plate via a first sliding assembly, the heat-sealing soldering iron is fixed to the upper end of the sliding plate, and a pushing assembly for assisting the lifting and lowering of the lifting plate and a pulling assembly for pulling the sliding plate are arranged between the two groups of support frames;

[0010] The pushing assembly includes a mounting shaft fixedly connected between two groups of support frames, a rotatable first mounting sleeve is sleeved on the outer side of the mounting shaft, a first connecting plate is fixed on the first mounting sleeve, a first connecting rod is arranged between the first connecting plate and the lifting plate, two ends of the first connecting rod are rotatably connected to the lifting plate and the first connecting plate respectively through pins, and a rotating assembly for rotating the first mounting sleeve is arranged between the two groups of support frames.

[0011] Preferably, the rotating assembly includes a driving shaft rotatably connected between two groups of support frames, a driving member for driving the driving shaft is installed on the outer side of the support frame, a first turntable is fixed on the driving shaft, a first annular groove is provided on the first turntable, a second connecting plate is fixed on the outer side of the first mounting sleeve, a first transmission pin is rotatably connected to the second connecting plate, the first transmission pin is slidably connected to the first annular groove, and a first arc-shaped protrusion for abutting and squeezing the first transmission pin is provided inside the first annular groove.

[0012] Preferably, the pulling assembly includes a second mounting sleeve which is sleeved on the outside of the mounting shaft and rotatably connected, a third connecting plate is fixed on the second mounting sleeve, a second connecting rod is arranged between the third connecting plate and the sliding plate, and both ends of the second connecting rod are rotatably connected to the end of the third connecting plate and one side of the sliding plate through a pin shaft, and a first transmission assembly for transmitting the second mounting sleeve is arranged on the driving shaft.

[0013] Preferably, the first transmission assembly includes a second turntable fixed on the driving shaft, the second turntable is provided with a second annular groove, a fourth connecting plate is fixed to the outer side of the second mounting sleeve, a second transmission pin is rotatably connected to the fourth connecting plate, the second transmission pin is slidably connected to the second annular groove, and a second arc-shaped protrusion is provided inside the second annular groove for pushing the second transmission pin against it.

[0014] Preferably, the first sliding assembly includes a first sliding rail fixed to the upper end of the lifting plate, a first sliding seat is slidably connected to the first sliding rail, and the sliding plate is fixed to the upper end of the first sliding seat.

[0015] Preferably, the second sliding assembly includes a second sliding rail fixed to the bottom plate, a second sliding seat is slidably connected to the second sliding rail, and the lifting plate is fixed to one side of the second sliding seat.

[0016] Preferably, the side folding assembly includes an L-shaped plate, which is rotatably connected to a rotating shaft, one end of which is fixed to an operating table, and an L-shaped side pressure plate is fixed to the L-shaped plate for squeezing the front and rear sides of the rectangular box body, and a rotating assembly for rotating and pulling the L-shaped plate is provided on the support frame.

[0017] Preferably, the rotating assembly includes an operating shaft fixed between two groups of support frames, a fifth connecting plate is fixed on the operating shaft, a third connecting rod is arranged between the fifth connecting plate and the L-shaped plate, both ends of the third connecting rod are rotatably connected to the fifth connecting plate and the L-shaped plate respectively through pins, and a second transmission assembly for transmitting the operating shaft is arranged between the drive shaft and the operating shaft.

[0018] Preferably, the second transmission assembly includes a third turntable fixed on the driving shaft, the third turntable is provided with a third annular groove, a fixing sleeve is fixed on the operating shaft, a transmission plate is fixed on the fixing sleeve, a third transmission pin is rotatably connected to the transmission plate, the third transmission pin is slidably connected to the third annular groove, and a third arc-shaped protrusion is arranged inside the third annular groove for abutting and squeezing the third transmission pin.

[0019] A method for side-lapping heat-sealing and folding film of a horizontal wrapping machine comprises the following steps:

[0020] S1: During the process of wrapping the rectangular box body, the rectangular box body wrapped with the wrapping film is transported to the lifting platform through an external conveying device. During the transportation process, the end of the wrapped wrapping film is on the left side of the rectangular box body. After the rectangular box body is transported, the lifting platform is lifted so that the placed rectangular box body is on the operating platform and abuts against the pressing groove on the conveying plate;

[0021] S2: After the rectangular box is placed and transported, the conveying plate is pushed toward the operating table by the power source. During the movement of the conveying plate, the placed rectangular box is pushed and transported to the designated position on the operating table by the action of the pressing groove. After the rectangular box is transported, the driving motor is driven to rotate the driving shaft. During the rotation of the driving shaft, the rotating assembly assists the first mounting sleeve to rotate on the mounting shaft.

[0022] S3: During the rotation of the first mounting sleeve, the sliding plate and the heat-sealing iron on the sliding plate are driven to move upward through transmission, and during the upward movement of the heat-sealing iron, the heat-sealing iron is abutted against one side of the rectangular box body on which the end of the wrapping film is wound;

[0023] S4: In the process of the driving shaft rotating, the sliding plate is driven to move rightward in the horizontal direction while moving upward. In the process of the sliding plate moving horizontally, the heat-sealing iron in the upward movement is pulled horizontally, so that the heat-sealing iron is fully against the side of the rectangular box body on which the end of the wrapping film is wound in the horizontal direction, so as to realize the heat-sealing connection of the end of the wrapping film by the side-lap heat-sealing and folding film. Because the rectangular box body is oblate, this method has a smaller area on the front side during the side-lap heat-sealing and folding film process, and the heat-sealing position of the front side is usually far away from the center of gravity and the main stress point of the material, which reduces the deformation caused by gravity or external pressure, avoids the problem of depression at the center of the rectangular box body, and enables the wrapping film to be heat-sealed more evenly, thereby improving the heat-sealing effect.

[0024] S5: In the process of heat-sealing and film-folding processing assisted by the rotation of the driving shaft, the L-shaped plate is forced to rotate on the rotating shaft through transmission. In the process of the L-shaped plate rotating, the L-shaped side pressure plate on the L-shaped plate is driven to resist the rectangular box body. The L-shaped side pressure plates on the two sets of side folding components are respectively resisted against the front and back sides of the rectangular box body to assist the side folding operation of the wrapping film on the rectangular box body. The two sets of L-shaped side pressure plates are respectively resisted against the front and back sides of the rectangular box body to squeeze and center the rectangular box body during the processing, so as to assist higher quality heat-sealing and side folding processing.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention realizes heat-sealing connection of the wrapping film end by the side-lap heat-sealing and film-folding method through the mutual cooperation of the side-lap heat-sealing and film-folding components, such as the lifting component, the pushing component, the rotating component and the side-folding component. This reduces the deformation caused by gravity or external pressure and avoids the problem of depression in the center of the rectangular box body, so that the wrapping film end is heat-sealed more evenly, thereby improving the heat-sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the support frame, the placement table and the operating table of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the side-lap heat-sealed film folding assembly and the lifting assembly of the present invention;

[0030] Figure 4It is a schematic diagram of the structure of the first sliding assembly, the second sliding assembly, the pushing assembly and the rotating assembly of the present invention;

[0031] Figure 5 This is a schematic diagram of the transmission direction of the lifting assembly and the pulling assembly after the rotating assembly of the present invention is driven;

[0032] Figure 6 It is a schematic structural diagram of the first transmission assembly of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the pulling assembly of the present invention;

[0034] Figure 8 It is a schematic diagram of the transmission direction of the pulling component during the transmission process of the first transmission component of the present invention;

[0035] Fig. 9 It is a schematic diagram of the structure of the side folding assembly of the present invention;

[0036] Fig.10 It is a schematic structural diagram of the rotating assembly and the second transmission assembly of the present invention;

[0037] Fig.11 It is a schematic diagram of the transmission direction of the rotating component during the transmission process of the second transmission component of the present invention.

[0038] In the figure: 101-operating table; 102-support frame; 103-rectangular box; 104-bottom plate; 201-placing table; 202-conveying plate; 203-pressing groove; 204-cylinder; 205-lifting platform; 301-slotting; 302-heat-sealing iron; 401-lifting plate; 402-sliding plate; 501-first slide rail; 502-first slide seat; 601-mounting shaft; 602-first mounting sleeve; 603-first connecting plate; 604-first connecting rod; 701-second slide rail; 702-second slide seat; 801-driving shaft; 803-first turntable; 804-first annular groove; 805-second connecting plate; 806-first A transmission pin; 807-a first arc-shaped protrusion; 901-a second mounting sleeve; 902-a third connecting plate; 903-a second connecting rod; 1001-a second turntable; 1002-a second annular groove; 1003-a fourth connecting plate; 1004-a second transmission pin; 1005-a second arc-shaped protrusion; 1101-a rotating shaft; 1102-an L-shaped plate; 1103-an L-shaped side pressure plate; 1201-an operating shaft; 1202-a fifth connecting plate; 1203-a third connecting rod; 1301-a third turntable; 1302-a third annular groove; 1303-a fixing sleeve; 1304-a transmission plate; 1305-a third transmission pin; 1306-a third arc-shaped protrusion. DETAILED DESCRIPTION

[0039] 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.

[0040] Example 1

[0041] See also Figure 1-Figure 11 The side-lap heat-sealing and folding film mechanism of a horizontal wrapping machine shown in the figure includes an operating table 101 for wrapping a rectangular box body 103, a bottom plate 104 is arranged below the operating table 101, and two sets of supporting frames 102 for assisting the operating table 101 are fixed between the operating table 101 and the bottom plate 104, and also include:

[0042] A conveying assembly disposed on one side of the operating table 101 for conveying the rectangular box body 103 to be wrapped and a side overlapping heat sealing and film folding assembly disposed on the operating table 101 for performing side overlapping heat sealing and film folding processing on the rectangular box body 103;

[0043] The conveying assembly includes a placing table 201 arranged on one side of the operating table 101, a lifting platform 205 that can be raised and lowered is arranged on the placing table 201, the rectangular box body 103 is placed on the lifting platform 205, a conveying plate 202 is arranged on the placing table 201, a pressing groove 203 for pressing against the upper side of the rectangular box body 103 is opened on the conveying plate 202, and a power source for pushing the conveying plate 202 is arranged on the placing table 201. The power source can be driven by a servo motor through a cam or a crank connecting rod, or can be directly driven by a cylinder 204. The specific pushing method belongs to the prior art and will not be repeated here.

[0044] The side overlap heat sealing and film folding assembly includes a slot 301 formed on the operating table 101, a heat sealing iron 302 for assisting the side overlap heat sealing and film folding process is arranged on the slot 301, a lifting assembly for lifting and lowering the heat sealing iron 302 is arranged on the operating table 101, and two sets of side folding assemblies for side folding and squeezing the two sides of the rectangular box body 103 during the side overlap heat sealing and film folding process are arranged on the operating table 101;

[0045] The lifting assembly includes a lifting plate 401 disposed below the operating table 101, the upper end of the lifting plate 401 is slidably connected to a sliding plate 402 via a first sliding assembly, the heat-sealing soldering iron 302 is fixed to the upper end of the sliding plate 402, and a pushing assembly for assisting the lifting plate 401 in lifting and lowering and a pulling assembly for pulling the sliding plate 402 are disposed between the two sets of support frames 102;

[0046] It is worth noting here that the heat-sealing iron 302 is a conventional technical means in the heat-sealing operation process, and is used as a prior art in this application, and will not be described in detail here;

[0047] The pushing assembly includes a mounting shaft 601 fixedly connected between the two groups of support frames 102, a rotatable first mounting sleeve 602 is sleeved on the outer side of the mounting shaft 601, a first connecting plate 603 is fixed on the first mounting sleeve 602, a first connecting rod 604 is arranged between the first connecting plate 603 and the lifting plate 401, and both ends of the first connecting rod 604 are rotatably connected to the lifting plate 401 and the first connecting plate 603 respectively through a pin shaft, and a rotating assembly for rotating the first mounting sleeve 602 is arranged between the two groups of support frames 102;

[0048] It should be noted here that: through the mutual cooperation of the side overlapping heat sealing and folding assembly, the lifting assembly, the pushing assembly, the rotating assembly and the side folding assembly, the heat sealing iron 302 is fully abutted against the side of the rectangular box body 103 on which the end of the wrapping film is wound in the horizontal direction, so as to realize the heat-sealing connection of the end of the wrapping film by side overlapping heat sealing and folding. Because the rectangular box body 103 is oblong, this method has a smaller area on the front side during the side overlapping heat sealing and folding process, and the heat sealing position of the front side is usually far away from the center of gravity and the main stress point of the material, which reduces the deformation caused by gravity or external pressure, avoids the depression problem in the center of the rectangular box body 103, and enables the wrapping film to be heat-sealed more evenly, thereby improving the heat sealing effect.

[0049] Preferably, the rotating assembly includes a driving shaft 801 rotatably connected between the two sets of support frames 102, and a driving member for driving the driving shaft 801 is installed on the outer side of the support frame 102;

[0050] It should be noted here that the driving member can be a driving motor, or can be other auxiliary transmission members such as a chain sprocket, and share a power driving source with other devices through the transmission member;

[0051] A first rotating disk 803 is fixed on the driving shaft 801, a first annular groove 804 is formed on the first rotating disk 803, a second connecting plate 805 is fixed on the outer side of the first mounting sleeve 602, a first transmission pin 806 is rotatably connected to the second connecting plate 805, the first transmission pin 806 is slidably connected to the first annular groove 804, and a first arc-shaped protrusion 807 for abutting and squeezing the first transmission pin 806 is provided inside the first annular groove 804;

[0052] It should be noted here that: the driving motor 802 is used to rotate the driving shaft 801. During the rotation of the driving shaft 801, the first turntable 803 is driven to rotate. During the rotation of the first turntable 803, the first transmission pin 806 on the second connecting plate 805 slides on the first annular groove 804. During the sliding process, when the first arc-shaped protrusion 807 abuts against the first transmission pin 806, the first transmission pin 806, the second connecting plate 805, the first mounting sleeve 602 and the first connecting plate 603 rotate clockwise around the mounting shaft 601 through the abutting transmission effect. When the first arc-shaped protrusion 807 does not abut against the first transmission pin 806, the first annular groove 804 interacts with the first transmission pin 806, so that the first transmission pin 806, the second connecting plate 805, the first mounting sleeve 602 and the first connecting plate 603 rotate counterclockwise around the mounting shaft 601 to reset.

[0053] Preferably, the pulling assembly includes a second mounting sleeve 901 which is sleeved on the outside of the mounting shaft 601 and rotatably connected, a third connecting plate 902 is fixed on the second mounting sleeve 901, a second connecting rod 903 is arranged between the third connecting plate 902 and the sliding plate 402, and both ends of the second connecting rod 903 are rotatably connected to the end of the third connecting plate 902 and one side of the sliding plate 402 through a pin shaft, and a first transmission assembly for transmitting the second mounting sleeve 901 is arranged on the driving shaft 801;

[0054] It should be noted here that: during the rotation of the drive shaft 801, the second mounting sleeve 901 is forced to rotate clockwise on the mounting shaft 601 through the connecting transmission action of the first transmission component. During the rotation of the second mounting sleeve 901, the sliding plate 402 moves to the right in the horizontal direction while moving upward through the connecting transmission action of the third connecting plate 902 and the second connecting rod 903 and the sliding guiding action of the first sliding component. During the lateral movement of the sliding plate 402, the heat sealing iron 302 in the upward movement is pulled in the horizontal direction.

[0055] Preferably, the first transmission assembly includes a second rotating disk 1001 fixed on the driving shaft 801, a second annular groove 1002 is formed on the second rotating disk 1001, a fourth connecting plate 1003 is fixed to the outer side of the second mounting sleeve 901, a second transmission pin 1004 is rotatably connected to the fourth connecting plate 1003, the second transmission pin 1004 is slidably connected to the second annular groove 1002, and a second arc-shaped protrusion 1005 for resisting and pushing the second transmission pin 1004 is provided inside the second annular groove 1002;

[0056] It should be noted here that: during the rotation of the driving shaft 801, the second turntable 1001 is driven to rotate, and during the rotation of the second turntable 1001, the second transmission pin 1004 on the fourth connecting plate 1003 slides on the second annular groove 1002. During the sliding process, when the second arc-shaped protrusion 1005 is against the second transmission pin 1004, the second transmission pin 1004, the fourth connecting plate 1003 and the second mounting sleeve 901 rotate counterclockwise around the mounting shaft 601 through the offset transmission effect, and when the second arc-shaped protrusion 1005 does not resist the second transmission pin 1004, the second annular groove 1002 and the second transmission pin 1004 interact with each other, so that the second transmission pin 1004, the fourth connecting plate 1003 and the second mounting sleeve 901 are reset and rotated clockwise around the mounting shaft 601.

[0057] Preferably, the first sliding assembly includes a first slide rail 501 fixed to the upper end of the lifting plate 401, a first slide seat 502 is slidably connected to the first slide rail 501, and the sliding plate 402 is fixed to the upper end of the first slide seat 502;

[0058] It should be noted here that the sliding of the sliding plate 402 is guided by the first sliding rail 501 and the first sliding seat 502 .

[0059] Preferably, the second sliding assembly includes a second slide rail 701 fixed on the bottom plate 104, a second slide seat 702 is slidably connected to the second slide rail 701, and the lifting plate 401 is fixed to one side of the second slide seat 702;

[0060] It should be noted here that the lifting and lowering movement of the lifting plate 401 is guided by the interaction between the second slide rail 701 and the second slide seat 702 .

[0061] Preferably, the side folding assembly includes an L-shaped plate 1102, the L-shaped plate 1102 is rotatably connected with a rotating shaft 1101, one end of the rotating shaft 1101 is fixed to the operating table 101, an L-shaped side pressing plate 1103 for pressing the front and rear sides of the rectangular box body 103 against each other is fixed to the L-shaped plate 1102, and a rotating assembly for rotating and pulling the L-shaped plate 1102 is provided on the support frame 102;

[0062] It should be noted here that: in the process of heat sealing and film folding processing assisted by the rotation of the driving shaft 801, the L-shaped side pressure plate 1103 on the L-shaped plate 1102 is driven to abut against the rectangular box body 103 through the rotating component, and the L-shaped side pressure plates 1103 on the two groups of side folding components are respectively abutted against the front and back sides of the rectangular box body 103, so as to assist the side folding operation of the wrapping film on the rectangular box body 103, and the two groups of L-shaped side pressure plates 1103 are respectively abutted against the front and back sides of the rectangular box body 103, so as to squeeze and center the rectangular box body 103 during the processing, so as to assist higher quality heat sealing and side folding processing.

[0063] Preferably, the rotating assembly includes an operating shaft 1201 fixed between the two groups of support frames 102, a fifth connecting plate 1202 is fixed on the operating shaft 1201, a third connecting rod 1203 is arranged between the fifth connecting plate 1202 and the L-shaped plate 1102, two ends of the third connecting rod 1203 are rotatably connected to the fifth connecting plate 1202 and the L-shaped plate 1102 respectively through a pin, and a second transmission assembly for transmitting the operating shaft 1201 is arranged between the driving shaft 801 and the operating shaft 1201;

[0064] It should be noted here that: in the process of heat sealing and folding film processing assisted by the rotation of the driving shaft 801, as the driving shaft 801 rotates and the connecting transmission action of the second transmission assembly, the operating shaft 1201 is forced to rotate counterclockwise. In the process of rotation of the operating shaft 1201, the third connecting rod 1203 is pushed through the connecting transmission action of the fifth connecting plate 1202. In the process of pushing, the L-shaped plate 1102 is forced to rotate on the rotating shaft 1101 through the connecting transmission action of the third connecting rod 1203.

[0065] Preferably, the second transmission assembly includes a third rotating disk 1301 fixed on the driving shaft 801, a third annular groove 1302 is formed on the third rotating disk 1301, a fixing sleeve 1303 is fixed on the operating shaft 1201, a transmission plate 1304 is fixed on the fixing sleeve 1303, a third transmission pin 1305 is rotatably connected to the transmission plate 1304, the third transmission pin 1305 is slidably connected to the third annular groove 1302, and a third arc-shaped protrusion 1306 for abutting and squeezing the third transmission pin 1305 is provided inside the third annular groove 1302;

[0066] It should be noted here that: during the rotation of the driving shaft 801, the third turntable 1301 is driven to rotate, and during the rotation of the third turntable 1301, the third transmission pin 1305 on the transmission plate 1304 slides on the third annular groove 1302. During the sliding process, when the third arc-shaped protrusion 1306 abuts against the third transmission pin 1305, the third transmission pin 1305, the transmission plate 1304 and the operating shaft 1201 rotate counterclockwise through the abutting transmission effect. When the third arc-shaped protrusion 1306 does not abut against the third transmission pin 1305, the third annular groove 1302 and the third transmission pin 1305 interact with each other, so that the third transmission pin 1305, the transmission plate 1304 and the operating shaft 1201 are reset and rotated.

[0067] In this scheme: a method for side-lap heat-sealing and folding film of a horizontal wrapping machine comprises the following steps:

[0068] S1: During the wrapping process of the rectangular box body 103, the rectangular box body 103 wrapped with the wrapping film is transported to the lifting platform 205 through an external conveying device. During the transportation process, the end of the wrapped wrapping film is on the left side of the rectangular box body 103. After the rectangular box body 103 is transported, the lifting platform 205 is lifted and lowered so that the placed rectangular box body 103 is on the operating table 101 and abuts against the pressing groove 203 on the conveying plate 202;

[0069] S2: After the rectangular box body 103 is placed and transported, the conveying plate 202 is pushed toward the operating table 101 by the power source 204. During the movement of the conveying plate 202, the placed rectangular box body 103 is pushed and transported to a designated position on the operating table 101 by the action of the pressing groove 203. After the rectangular box body 103 is transported, the driving motor 802 is driven to rotate the driving shaft 801. During the rotation of the driving shaft 801, the first mounting sleeve 602 is assisted to rotate on the mounting shaft 601 by the rotating assembly.

[0070] S3: During the rotation of the first mounting sleeve 602, the lifting plate 401 is forced to move upward toward the bottom of the operating table 101 through the connection and transmission between the first connecting plate 603 and the first connecting rod 604 and the sliding guide of the second sliding assembly (see FIG. Figure 5 ), during the upward movement of the lifting plate 401, the first slide rail 501 on the first sliding assembly and the first slide seat 502 are connected to drive the sliding plate 402 and the heat-sealing iron 302 on the sliding plate 402 to move upward, and during the upward movement of the heat-sealing iron 302, the heat-sealing iron 302 is abutted against one side of the rectangular box body 103 on which the end of the wrapping film is wound;

[0071] S4: During the rotation of the drive shaft 801, the second installation sleeve 901 is forced to rotate clockwise on the installation shaft 601 through the connecting transmission action of the first transmission assembly (see Figure 8 ), during the rotation of the second mounting sleeve 901, the sliding plate 402 moves to the right in the horizontal direction while moving upward through the connecting transmission function of the third connecting plate 902 and the second connecting rod 903 and the sliding guiding function of the first sliding assembly (see Figure 8 ), during the lateral movement of the sliding plate 402, the heat-sealing iron 302 in the upward movement is pulled in the lateral direction, so that the heat-sealing iron 302 fully abuts against the side of the rectangular box body 103 on which the end of the wrapping film is wound in the lateral direction, so as to realize the heat-sealing connection of the end of the wrapping film by the side-lap heat-sealing and folding film method. Since the rectangular box body 103 is oblate, this method has a smaller area on the front side during the side-lap heat-sealing and folding film process, and the heat-sealing position of the front side is usually far away from the center of gravity and the main stress point of the material, which reduces the deformation caused by gravity or external pressure, avoids the problem of depression at the center of the rectangular box body 103, and enables the wrapping film to be heat-sealed more evenly, thereby improving the heat-sealing effect;

[0072] S5: In the process of heat-sealing and film-folding processing assisted by the rotation of the driving shaft 801, the driving shaft 801 rotates and the second transmission assembly is connected to the operating shaft 1201, so that the operating shaft 1201 is forced to rotate counterclockwise (see Fig.11 ), during the rotation of the operating shaft 1201, the third connecting rod 1203 is pushed through the connecting transmission action of the fifth connecting plate 1202, and during the pushing process, the L-shaped plate 1102 is forced to rotate on the rotating shaft 1101 through the connecting transmission action of the third connecting rod 1203, and during the rotation of the L-shaped plate 1102, the L-shaped side pressure plate 1103 on the L-shaped plate 1102 is driven to abut against the rectangular box body 103, and the L-shaped side pressure plates 1103 on the two groups of side folding components are respectively abutted against the front and rear sides of the rectangular box body 103, so as to assist the wrapping film on the rectangular box body 103 to perform side folding operation, and the two groups of L-shaped side pressure plates 1103 are respectively abutted against the front and rear sides of the rectangular box body 103, so as to squeeze and center the rectangular box body 103 during the processing, so as to assist higher quality heat-sealed side folding processing.

[0073] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A side-lap heat-sealing and film-folding mechanism for a horizontal wrapping machine, comprising: An operating table (101) for wrapping a rectangular box body (103), wherein a bottom plate (104) is arranged below the operating table (101), and two groups of support frames (102) for assisting in supporting the operating table (101) are fixed between the operating table (101) and the bottom plate (104); It is characterized by further comprising: A conveying assembly arranged on one side of the operating table (101) for conveying the rectangular box body (103) to be wrapped, and a side overlapping heat sealing and film folding assembly arranged on the operating table (101) for performing side overlapping heat sealing and film folding on the rectangular box body (103); The conveying assembly comprises a placing table (201) arranged on one side of the operating table (101); a lifting platform (205) which can be raised and lowered is arranged on the placing table (201); the rectangular box body (103) is placed on the lifting platform (205); a conveying plate (202) is arranged on the placing table (201); a pressing groove (203) is provided on the conveying plate (202) for pressing against the upper side of the rectangular box body (103); and a power source for pushing the conveying plate (202) is arranged on the placing table (201); The side-lap heat-sealing and film-folding assembly comprises a slot (301) formed on an operating table (101); a heat-sealing iron (302) for assisting the side-lap heat-sealing and film-folding process is arranged on the slot (301); a lifting assembly for lifting the heat-sealing iron (302) is arranged on the operating table (101); and two sets of side-folding assemblies for side-folding and extruding two sides of a rectangular box body (103) during the side-lap heat-sealing and film-folding process are arranged on the operating table (101); The lifting assembly comprises a lifting plate (401) arranged below the operating table (101); the upper end of the lifting plate (401) is slidably connected to a sliding plate (402) via a first sliding assembly; the heat-sealing soldering iron (302) is fixed to the upper end of the sliding plate (402); and a pushing assembly for assisting the lifting plate (401) in lifting and lowering and a pulling assembly for pulling the sliding plate (402) are arranged between the two groups of support frames (102); The pushing assembly comprises a mounting shaft (601) fixedly connected between two groups of support frames (102); a rotatable first mounting sleeve (602) is sleeved on the outer side of the mounting shaft (601); a first connecting plate (603) is fixed on the first mounting sleeve (602); a first connecting rod (604) is arranged between the first connecting plate (603) and the lifting plate (401); two ends of the first connecting rod (604) are rotatably connected to the lifting plate (401) and the first connecting plate (603) respectively through a pin shaft; and a rotating assembly for rotating the first mounting sleeve (602) is arranged between the two groups of support frames (102).

2. According to claim 1, a side overlapping heat sealing and folding film mechanism of a horizontal wrapping machine is characterized in that: The rotating assembly includes a driving shaft (801) rotatably connected between two groups of support frames (102), a driving member for driving the driving shaft (801) is installed on the outer side of the support frame (102), a first turntable (803) is fixed on the driving shaft (801), a first annular groove (804) is provided on the first turntable (803), a second connecting plate (805) is fixed on the outer side of the first mounting sleeve (602), a first transmission pin (806) is rotatably connected to the second connecting plate (805), the first transmission pin (806) is slidably connected to the first annular groove (804), and a first arc-shaped protrusion (807) for pressing against the first transmission pin (806) is provided inside the first annular groove (804).

3. The side overlapping heat sealing and folding film mechanism of a horizontal wrapping machine according to claim 2, characterized in that: The pulling assembly comprises a second mounting sleeve (901) which is sleeved on the outside of the mounting shaft (601) and is rotatably connected; a third connecting plate (902) is fixed on the second mounting sleeve (901); a second connecting rod (903) is arranged between the third connecting plate (902) and the sliding plate (402); two ends of the second connecting rod (903) are rotatably connected to the end of the third connecting plate (902) and one side of the sliding plate (402) respectively through a pin shaft; and a first transmission assembly for transmitting the second mounting sleeve (901) is arranged on the driving shaft (801).

4. The side overlapping heat sealing and folding film mechanism of a horizontal wrapping machine according to claim 3, characterized in that: The first transmission assembly includes a second turntable (1001) fixed on the driving shaft (801), a second annular groove (1002) is provided on the second turntable (1001), a fourth connecting plate (1003) is fixed on the outer side of the second mounting sleeve (901), a second transmission pin (1004) is rotatably connected to the fourth connecting plate (1003), the second transmission pin (1004) is slidably connected to the second annular groove (1002), and a second arc-shaped protrusion (1005) for pushing the second transmission pin (1004) against is provided inside the second annular groove (1002).

5. The side overlapping heat sealing and folding film mechanism of a horizontal wrapping machine according to claim 4, characterized in that: The first sliding assembly comprises a first sliding rail (501) fixed to the upper end of the lifting plate (401), a first sliding seat (502) is slidably connected to the first sliding rail (501), and the sliding plate (402) is fixed to the upper end of the first sliding seat (502).

6. The side overlapping heat sealing and folding film mechanism of a horizontal wrapping machine according to claim 5, characterized in that: The second sliding assembly comprises a second sliding rail (701) fixed on the bottom plate (104), a second sliding seat (702) is slidably connected to the second sliding rail (701), and the lifting plate (401) is fixed on one side of the second sliding seat (702).

7. The side overlapping heat sealing and folding film mechanism of a horizontal wrapping machine according to claim 2, characterized in that: The side folding assembly comprises an L-shaped plate (1102), the L-shaped plate (1102) is rotatably connected to a rotating shaft (1101), one end of the rotating shaft (1101) is fixed to an operating table (101), an L-shaped side pressure plate (1103) is fixed to the L-shaped plate (1102) for pressing the front and rear sides of the rectangular box body (103) against each other, and a rotating assembly is provided on the support frame (102) for rotating and pulling the L-shaped plate (1102).

8. The side overlapping heat sealing and folding film mechanism of a horizontal wrapping machine according to claim 7, characterized in that: The rotating assembly comprises an operating shaft (1201) fixed between two groups of support frames (102); a fifth connecting plate (1202) is fixed on the operating shaft (1201); a third connecting rod (1203) is arranged between the fifth connecting plate (1202) and the L-shaped plate (1102); two ends of the third connecting rod (1203) are rotatably connected to the fifth connecting plate (1202) and the L-shaped plate (1102) respectively through pins; and a second transmission assembly for transmitting the operating shaft (1201) is arranged between the driving shaft (801) and the operating shaft (1201).

9. The side overlapping heat sealing and folding film mechanism of a horizontal wrapping machine according to claim 8, characterized in that: The second transmission assembly comprises a third rotating disk (1301) fixed on the driving shaft (801), a third annular groove (1302) being provided on the third rotating disk (1301), a fixing sleeve (1303) being fixed on the operating shaft (1201), a transmission plate (1304) being fixed on the fixing sleeve (1303), a third transmission pin (1305) being rotatably connected to the transmission plate (1304), the third transmission pin (1305) being slidably connected to the third annular groove (1302), and a third arc-shaped protrusion (1306) for pressing against the third transmission pin (1305) being provided inside the third annular groove (1302).

10. A method for side-lap heat-sealing and film-folding of a horizontal wrapping machine, which refers to the side-lap heat-sealing and film-folding mechanism of a horizontal wrapping machine as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1: During the process of wrapping the rectangular box body (103), the rectangular box body (103) wrapped with a wrapping film is transported to the lifting platform (205) through an external conveying device. During the transportation process, the end of the wrapped wrapping film is located on the left side of the rectangular box body (103). After the rectangular box body (103) is transported, the lifting platform (205) is lifted and lowered so that the placed rectangular box body (103) is located on the operating table (101) and abuts against the pressing groove (203) on the conveying plate (202); S2: After the rectangular box body (103) is placed and transported, the transport plate (202) is pushed toward the operating table (101) by a power source. During the movement of the transport plate (202), the placed rectangular box body (103) is pushed and transported to a designated position on the operating table (101) by the action of the pressing groove (203). After the rectangular box body (103) is transported, the drive shaft (801) is rotated by a driving motor (802). During the rotation of the drive shaft (801), the first mounting sleeve (602) is assisted to rotate on the mounting shaft (601) by a rotating assembly; S3: During the rotation of the first mounting sleeve (602), the sliding plate (402) and the heat-sealing iron (302) on the sliding plate (402) are driven to move upward through transmission, and during the upward movement of the heat-sealing iron (302), the heat-sealing iron (302) is abutted against one side of the rectangular box body (103) on which the end of the wrapping film is wound; S4: During the rotation of the driving shaft (801), the sliding plate (402) is driven to move rightward in the horizontal direction while moving upward. During the horizontal movement of the sliding plate (402), the heat-sealing iron (302) in the upward movement is pulled in the horizontal direction, so that the heat-sealing iron (302) fully abuts against the side of the rectangular box body (103) on which the end of the wrapping film is wound in the horizontal direction, thereby realizing the heat-sealing connection of the end of the wrapping film by side-lap heat-sealing and folding film. Since the rectangular box body (103) is oblate, this method has a smaller area on the front side during the side-lap heat-sealing and folding process, and the heat-sealing position on the front side is usually far away from the center of gravity and the main stress point of the material, thereby reducing deformation caused by gravity or external pressure, avoiding the problem of depression at the center of the rectangular box body (103), and allowing the wrapping film to be heat-sealed more evenly, thereby improving the heat-sealing effect. S5: In the process of heat-sealing and film-folding processing assisted by the rotation of the driving shaft (801), the L-shaped plate (1102) is subjected to force to rotate on the rotating shaft (1101) through transmission. In the process of the L-shaped plate (1102) rotating, the L-shaped side pressure plate (1103) on the L-shaped plate (1102) is driven to abut against the rectangular box body (103). The L-shaped side pressure plates (1103) on the two sets of side folding components abut against the front and rear sides of the rectangular box body (103) respectively, so as to assist the wrapping film on the rectangular box body (103) to perform side folding operation. In addition, the two sets of L-shaped side pressure plates (1103) abut against the front and rear sides of the rectangular box body (103) respectively, so as to squeeze and center the rectangular box body (103) during the processing, so as to assist the heat-sealing and side folding processing with higher quality.

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