Aluminum foil sealing machine and sealing method for packaging bottles

Abstract

A packaging bottle aluminum foil sealing machine and a sealing method, which comprises a machine base, a front conveyor belt, a clamping conveyor device, a rear conveyor belt, an electromagnetic induction heating module, a bracket, a waste collection mechanism and a centering adjustment device. The packaging bottle passes through the front conveyor belt, the clamping conveyor device and the rear conveyor belt in sequence, and the aluminum foil at the mouth of the packaging bottle is heat-sealed on the bottle mouth by the electromagnetic induction heating module when passing through the clamping conveyor device. The clamping conveyor device comprises a first clamping conveyor belt and a second clamping conveyor belt which are arranged in parallel and have different running speeds. The packaging bottle is placed therebetween and rotates at a uniform speed to be conveyed forward. The centering adjustment mechanism makes the distance between the two clamping surfaces adjustable, and the bracket and the machine base are both height-adjustable. The present invention improves the production speed and sealing success rate of the entire line by providing clamping force on both sides of the bottle to prevent the bottle body from moving, shaking or tipping over. The rotating bottle body and bottle mouth make the aluminum foil heated more evenly, further improving the sealing success rate.

Description

Technical Field

[0001] The invention relates to the technical field of packaging, and in particular to an aluminum foil sealing machine for packaging bottles and a sealing method. Background Art

[0002] The sealing process of packaging bottles (such as plastic bottles, glass bottles, etc.) is to place an aluminum foil between the bottle mouth and the bottle cap, press the aluminum foil against the bottle mouth by tightening the bottle cap, and then stand the bottle on a conveyor belt that can be transported horizontally, and an electromagnetic induction heating module is placed above the conveyor belt; an induction coil plate is provided on the electromagnetic induction heating module, and the coil plate will generate an electromagnetic field when energized, and the aluminum foil passing through the electromagnetic field will spontaneously generate heat in an instant, and the aluminum foil transfers its own heat to the bottle mouth or the hot melt adhesive adhered to it through the principle of heat conduction, so that part of the plastic or hot melt adhesive at the bottle mouth is melted, and after the aluminum foil at the bottle mouth leaves the induction coil plate of the electromagnetic induction heating module, the melted plastic or hot melt adhesive will cool down, and after cooling, the aluminum foil will bond to the plastic bottle mouth, thereby achieving the effect of sealing the bottle mouth. The current production process for sealing plastic bottles is to drive the packaging bottles through a linear conveyor belt at a certain speed under the heating plate of the electromagnetic induction module. After the plastic bottles enter, pass through, and leave the heating plate, the molten plastic cools rapidly, and the bottle mouth and the aluminum foil are bonded together to achieve a sealed state.

[0003] However, the straight-line conveyor belt has its own unique defects, such as large vibration, single transmission direction and difficulty in reversing, which makes the bottle body easily affected by vibration during the conveyor belt operation, causing the bottle body to shake and move, resulting in an unstable relative distance between the bottle mouth and the heating plate, resulting in uneven heating of the bottle mouth and poor sealing and bonding effect. At the same time, due to the small mass of the plastic bottle body, when the conveyor belt accelerates, the bottle body will fall backward due to its own inertia and air resistance, thereby limiting the bottle transportation speed and further limiting the increase in the sealing speed. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a packaging bottle aluminum foil sealing mechanical device with self-contained bottle body freedom constraint and bottle body support function, uniform heating, high sealing success rate, and fast bottle transportation speed, as well as a new aluminum foil sealing production process method.

[0005] The present invention is achieved through the following technical solutions:

[0006] A packaging bottle aluminum foil sealing machine is used for aluminum foil sealing of cylindrical packaging bottles (including plastic bottles or glass bottles). Aluminum foil is pre-placed between the bottle cap and the bottle mouth of the packaging bottle. The machine comprises a machine base and a front conveyor belt, a clamping conveyor device, a rear conveyor belt, an electromagnetic induction heating module, a bracket and a waste collection mechanism arranged on the machine base. The front conveyor belt, the clamping conveyor device and the rear conveyor belt are connected in sequence. The electromagnetic induction heating module is installed on the bracket and is located above the clamping conveyor device. The packaging bottle passes through the front conveyor belt, the clamping conveyor device and the rear conveyor belt in sequence. When passing through the clamping conveyor, the aluminum foil at the mouth of the packaging bottle is heat-sealed on the bottle mouth by the electromagnetic induction heating module; the clamping conveyor includes a first clamping conveyor belt and a second clamping conveyor belt arranged in parallel with each other, the first clamping conveyor belt and the second clamping conveyor belt have different conveying speeds, and the packaging bottle rotates due to the different running speeds of the two conveyor belts, and the packaging bottle is placed between the first clamping conveyor belt and the second clamping conveyor belt and rotates at a uniform speed to be conveyed forward; the waste collection mechanism is arranged directly below the clamping conveyor device, and is used to collect rejected unqualified products. The front section conveyor belt and the rear section conveyor belt can be universal flat conveyor belts, and the packaging bottle is transmitted by the friction between the bottom of the bottle and the conveyor belt. When it reaches the clamping conveyor device, it is transmitted by clamping the bottle body instead, and will not shake or tip over. At the same time, the self-rotation can improve the uniformity of the heating of the aluminum foil and make the aluminum foil adhere firmly.

[0007] The preferred solution of the first clamping conveyor belt is that the first clamping conveyor belt includes a first top plate, a first bottom plate, an intermediate clamping block, a first synchronous belt, a motor, a pulley, a belt, a driving wheel and a driven wheel. The intermediate clamping block is arranged between the first top plate and the first bottom plate and the portion for clamping the packaging bottle protrudes outside the first top plate and the first bottom plate. The driving wheel and the driven wheel are respectively installed at the two ends of the intermediate clamping block. The first synchronous belt is installed on the driving wheel and the driven wheel and surrounds the side of the intermediate clamping block so that the first synchronous belt also protrudes from the first top plate and the first bottom plate. The motor is connected to the driving wheel through a pulley and a belt to drive the driving wheel to rotate. The driving wheel rotates to drive the first synchronous belt and the driven wheel to operate. The first clamping conveyor belt can also be other similar structures with the same principle, especially the transmission forms between the motor and the driving wheel are various, which can all be used in the present invention.

[0008] A further improved solution for the transmission between the motor and the driving wheel in the first clamping conveyor belt is that the motor is installed at the bottom of the first base plate, the pulleys include a first pulley, a second pulley and a third pulley, the first pulley is connected to the output shaft of the motor, the third pulley is connected to the axle of the driving wheel, the output shaft of the motor is perpendicular to the axle of the driving wheel, the second pulley is fixed on the first base plate, and is a double-row pulley, the rotating shaft of the second pulley is perpendicular to the axle of the driving wheel, the belt passes around the first pulley, the second pulley and the third pulley in turn, and transmits the power of the motor to the driving wheel. In this way, the direction of the motor power output is changed, which is convenient for the installation of the equipment.

[0009] The second clamping conveyor belt has a different conveying speed from the first clamping conveyor belt, and may be similar in structure to the first clamping conveyor belt, but with different speeds. As an improved solution of the present invention, the second clamping conveyor belt may be a stationary structure, that is, the speed of the second clamping conveyor belt is zero, and the structure has no conveyor belt, but only a clamping structure. As one of the structures, the second clamping conveyor belt includes a second top plate, a second bottom plate, a baffle, a cylinder and a compression spring, the second top plate and the second bottom plate are fixed together up and down and a U-shaped groove extending in the length direction is formed at the middle connection, and a shaft mounting hole, a cylinder mounting groove and a spring mounting groove are also provided at the connection between the second top plate and the second bottom plate, the shaft mounting hole is located at the end close to the second top plate and the second bottom plate, a shaft is provided on the baffle, the baffle is installed in the U-shaped groove through the shaft and the shaft mounting hole, and its clamping surface protrudes from the side of the second top plate and the second bottom plate; the spring mounting groove is located at one end close to the shaft mounting hole, and the cylinder mounting groove is located at the other end away from the shaft mounting hole, the compression spring is installed in the spring mounting groove, one end of which contacts the inner wall of the spring mounting groove, and the other end contacts the back of the baffle; the cylinder is installed in the cylinder mounting groove, and it is connected to the back of the baffle, and the cylinder drives the baffle to retreat when it is necessary to remove materials. The spring forms a lever with the rotating shaft as a fulcrum, so that the two ends of the baffle can move within a certain range, so as to fine-tune the distance between the baffle and the synchronous belt, and thus adjust the clamping force of the bottle. In the above scheme, the first synchronous belt and the baffle are the two clamping surfaces of the bottle. During normal operation, the cylinder presses against the baffle to clamp the bottle. When the operation is abnormal and the clamped bottle needs to be rejected, the cylinder drives the baffle to retreat to increase the distance between the baffle and the synchronous belt, and the bottle falls into the waste rejection mechanism below.

[0010] In order to facilitate the adjustment of the distance between the two clamping surfaces in the clamping and conveying device to adapt to packaging bottles of different diameters, a further improved solution is that a centering adjustment device is also provided on the machine base, and the centering adjustment device is used to adjust the installation position of the clamping and conveying device, thereby adjusting the center line position of the clamped packaging bottle to adapt to packaging bottles of different diameters. The centering adjustment device includes two distance adjustment mechanisms of the same structure, and the two distance adjustment mechanisms are symmetrically located at the feeding end and the discharging end of the clamping and conveying device; the distance adjustment mechanism includes a guide rod, a screw rod, a short fixed plate, a long fixed plate, a single-row sprocket, a double-row sprocket, a first chain, a left-handed nut, a right-handed nut, a distance scale display and a first handwheel, the short fixed plate and the long fixed plate each have two pieces, the two long fixed plates are fixed on the machine base, the screw rod can be rotatably connected to the two long fixed plates, the screw rod is divided into two sections, one section is a left-handed transmission thread, and the other section is a right-handed transmission thread, the left-handed transmission thread is threaded with the left-handed nut, and the right-handed nut is threaded with the left-handed nut. The right-handed nut is threaded on the transmission thread, and the two short fixed plates are fixedly connected to the left-handed nut and the right-handed nut respectively; the guide rod is fixed between the two long fixed plates and is parallel to the screw rod, and the two short fixed plates are simultaneously sleeved on the guide rod through sliding sleeves respectively, the first clamping conveyor belt and the second clamping conveyor belt are fixedly connected to the two short fixed plates respectively, and the distance between the first clamping conveyor belt and the second clamping conveyor belt is adjusted by adjusting the distance between the two short fixed plates; the first hand wheel is installed at one end of the screw rod, and the distance scale display is fixed on a long fixed plate close to the first hand wheel, and the distance scale display can display the adjusted displacement and measure the distance between the two clamping surfaces to facilitate precise adjustment, the single-row sprocket is installed at the other end of the screw rod away from the first hand wheel, the double-row sprocket is connected to the single-row sprocket through the first chain, and the two distance adjustment mechanisms are connected to each other through the second chain connecting the double-row sprockets thereon.

[0011] The working principle of the above-mentioned centering adjustment device is as follows: turning any first hand wheel left or right drives the corresponding screw rod to turn left or right, and the screw rod drives the short fixed plate connected to it to move through the left-hand nut or the right-hand nut; the rotation of the screw rod simultaneously drives the single-row sprocket to rotate, the single-row sprocket drives the double-row sprocket to rotate through the first chain, and the double-row sprocket drives the double-row sprocket in another distance adjustment mechanism to rotate through the second chain, and drives the single-row sprocket, the screw rod to rotate, and the movement of the short fixed plate by the same principle; the two short fixed plates on the same side of the two distance adjustment mechanisms move simultaneously, thereby driving the first clamping conveyor belt or the second clamping conveyor belt connected thereto to move, thereby adjusting the distance between the first clamping conveyor belt and the second clamping conveyor belt; the left-hand or right-hand rotation of the first hand wheel corresponds to the movement of the short fixed plates on different sides, and the short fixed plates on different sides correspond to the connection with the first clamping conveyor belt or the second clamping conveyor belt.

[0012] A further improvement is that the waste collection mechanism is arranged below the clamping and conveying device, and includes a base plate, a waste collection bucket and a drawer. A receiving port is opened in the middle of the base plate, the waste collection bucket is arranged below the base plate and opposite to the receiving port, an opening is provided at the bottom end of the side of the waste receiving bucket, and the drawer can be dragged through the opening and arranged in the waste receiving bucket.

[0013] A further improvement is that the bracket is a height-adjustable structure, which includes a bottom fixing seat, a second hand wheel, an end cover sleeve, a transmission screw, a cover tube, a transmission nut, an adjustment block, a support plate and a hanging plate, the bottom fixing seat is fixed on the machine base, the cover tube is vertically fixed on the bottom fixing seat, one end of the transmission screw is inserted into the cover tube, and the other end is rotatably connected to the cover tube through the end cover sleeve, and the end of the transmission screw exposed at one end of the cover tube is connected to the second hand wheel, and the transmission nut is threaded on the transmission screw located in the cover tube; an axial limiting groove is provided on the side of the cover tube, the adjustment block is sleeved on the outside of the cover tube and can slide up and down along the cover tube, the adjustment block is fixedly connected to the transmission nut from the limiting groove, so that the adjustment block moves up and down outside the cover tube along the direction of the limiting groove with the transmission nut; the support plate is fixedly connected to the adjustment block from the side, the hanging plate is vertically installed on the support plate, and the electromagnetic induction heating module is fixedly connected to the hanging plate to adjust the height of the electromagnetic induction heating module.

[0014] The working principle of the above-mentioned adjustable height bracket is: rotating the second hand wheel drives the screw to rotate, drives the transmission nut to move up and down, and drives the adjustment block connected to the transmission nut on the cover tube to move up and down along the limit groove, and drives the support plate, hanging plate and electromagnetic induction heating module fixedly connected to the adjustment block to move up and down.

[0015] In the above scheme, a further improvement is that the transmission nut includes a nut and a guide block, the nut is threadedly connected to the transmission screw, the guide block is fixedly arranged on the outer surface of the nut, and its shape matches the shape of the limit groove so that the guide block can move up and down in the limit groove, and the adjustment block is fixedly connected to the guide block, so that the adjustment block can move up and down along the limit groove.

[0016] A further improvement is that the machine base is a height-adjustable structure, which includes a frame base and a height adjustment system arranged on the frame base, a horizontal fixing plate is arranged on the frame base, and the height adjustment system includes a main transmission mechanism and an adjustment actuator; the main transmission mechanism includes a third hand wheel, a driving gear shaft, a driving gear, a driven gear, a driven gear shaft, a main synchronous wheel, a first slave synchronous wheel, a second slave synchronous wheel, a tensioning wheel and a second synchronous belt, the third hand wheel, the driving gear shaft, the driving gear, the driven gear, the driven gear shaft and the main synchronous wheel are connected in sequence, the main synchronous wheel, the first slave synchronous wheel, the second slave synchronous wheel and the tensioning wheel are connected in sequence through the second synchronous belt, and the rotation of the third hand wheel is converted into the synchronous rotation of the main synchronous wheel, the first slave synchronous wheel and the second slave synchronous wheel; the adjustment actuator includes a first adjustment wire Rod, a first adjusting rod, a first adjusting nut, a first adjusting base, a second adjusting screw rod, a second adjusting rod, a second adjusting nut and a second adjusting base, the first adjusting screw rod is connected to the first slave synchronous wheel, the first adjusting nut is screwed to the first adjusting screw rod, the first adjusting base is fixedly connected to the first adjusting nut, one end of the first adjusting rod is fixed to the first adjusting base, and the other end is connected to the support plate of the sealing machine through a sliding sleeve through the fixed plate on the frame base; the second adjusting screw rod is connected to the second slave synchronous wheel, the second adjusting nut is screwed to the second adjusting screw rod, the second adjusting base is fixedly connected to the second adjusting nut, one end of the second adjusting rod is fixed to the second adjusting base, and the other end is connected to the support plate of the sealing machine through the sliding sleeve through the fixed plate on the frame base.

[0017] A further improvement is that the frame base is provided with supporting feet and universal wheels; the first adjusting rod and the second adjusting rod are both provided with limiting sleeves; the driving gear and the driven gear are matching bevel gears; the third hand wheel, the driving gear shaft, the driven gear shaft, the first adjusting screw and the second adjusting screw are respectively connected to the fixed plate on the frame base through sliding sleeves.

[0018] The working principle of the above-mentioned adjustable height machine base is: rotating the third hand wheel, driving the driving gear, the driven gear and the main synchronous wheel to rotate in turn, thereby driving the first slave synchronous wheel, the second slave synchronous wheel, the tensioning wheel and the second synchronous belt to move, the first slave synchronous wheel and the second slave synchronous wheel respectively drive the first adjusting screw rod and the second adjusting screw rod to rotate, the first adjusting screw rod and the second adjusting screw rod respectively drive the first adjusting rod and the second adjusting rod to move up and down, thereby making the pallet of the sealing machine connected thereto move up and down to adjust the height of the working parts installed on the pallet.

[0019] Other components in the present invention, such as the front conveyor belt, the rear conveyor belt, and the electromagnetic induction heating module, can all adopt existing technologies.

[0020] A method for sealing packaging bottles with aluminum foil, using the above-mentioned packaging bottle aluminum foil sealing machine, comprises the following steps:

[0021] S1. After the packaging bottle with aluminum foil placed between the bottle mouth and the bottle cap enters the front conveyor belt, it arrives between the first clamping conveyor belt and the second clamping conveyor belt of the clamping conveyor device. Since the speeds of the first clamping conveyor belt and the second clamping conveyor belt are inconsistent, under the joint action of the first clamping conveyor belt and the second clamping conveyor belt on the clamping conveyor device, the packaging bottle turns forward at a uniform speed.

[0022] S2. When the packaging bottle reaches the bottom of the electromagnetic induction heating module, the electromagnetic induction coil is energized to generate an electromagnetic field. The aluminum foil on the bottle mouth in the electromagnetic field instantly heats up, melting the hot melt adhesive on the aluminum foil or the plastic in contact with the bottle mouth. The hot melt adhesive or plastic is fully melted due to the rotation of the bottle mouth. After the packaging bottle leaves the electromagnetic field and cools down, the aluminum foil and the bottle mouth will be firmly bonded together. If it is a plastic bottle and the plastic of the plastic bottle is easy to melt, the plastic of the plastic bottle mouth can be melted to stick to the aluminum foil; if it is a glass bottle or a plastic bottle with non-meltable plastic, an aluminum foil gasket with hot melt adhesive can be used. The aluminum foil gasket is bonded to the bottle mouth through the melting of the hot melt adhesive on it.

[0023] When production is abnormal, the distance between the first clamping conveyor belt and the second clamping conveyor belt is adjusted to make the clamped packaging bottles fall off the production line, preventing bottles with poor sealing from entering the subsequent process.

[0024] The advantages of the packaging bottle aluminum foil sealing machine and sealing method of the present invention are: (1) by adding a clamping conveyor belt between two sections of horizontal transmission belts and providing clamping force on both sides of the bottle, the freedom constraint of the bottle body and the support of the bottle body during operation of the packaging bottle are increased, and the bottle body is prevented from moving, shaking or tipping over due to the vibration of the mechanical device itself, thereby improving the sealing success rate and increasing the production speed of the entire line; (2) by setting the clamping conveyor belts on both sides of the bottle body to different transmission speeds, when the bottle body passes through the heating plate, not only the bottle body itself moves forward at a uniform speed, but also the bottle body and the bottle mouth rotate at a uniform speed. In this way, compared with the state where the bottle body does not rotate, the bottle mouth is more stable. The aluminum foil is heated more evenly and the sealing success rate is further improved; (3) by setting the clamping conveyor belt on one side as a retractable structure, when the factory workshop encounters a power outage, gas outage or the production line stops due to an abnormal fault, the clamping conveyor belt is retracted to make the bottles fall into the recycling device, so as to automatically remove the bottles running on this mechanical device and prevent the poorly sealed bottles from entering the subsequent process; (4) by setting a centering adjustment mechanism, the distance between the two clamping surfaces can be adjusted, by setting a height-adjustable bracket, the height of the electromagnetic induction heating module can be adjusted, and by setting a height-adjustable machine base, the height of the whole machine can be adjusted to adapt to bottles of different diameters and heights and production lines with different height requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an existing packaging bottle aluminum foil sealing machine.

[0026] Figure 2 The figure is a schematic diagram of the overall structure of an embodiment of the present invention.

[0027] Figure 3 Schematic diagram of the structure of the first clamping conveyor belt in an embodiment of the present invention.

[0028] Figure 4 It is a top sectional view of the first clamping conveyor belt in the embodiment of the present invention.

[0029] Figure 5 It is a side view of the first clamping conveyor belt in the embodiment of the present invention.

[0030] Figure 6 for Figure 5 AA section view in.

[0031] Figure 7 for Figure 5 BB section view in.

[0032] Figure 8 Schematic diagram of the structure of the second clamping conveyor belt in an embodiment of the present invention.

[0033] Fig. 9 It is a schematic structural diagram of the second bottom plate in the second clamping conveyor belt according to an embodiment of the present invention.

[0034] Fig.10 It is a schematic structural diagram of a baffle in the second clamping conveyor belt according to an embodiment of the present invention.

[0035] Fig.11 It is a schematic diagram of the assembly of the second bottom plate and the baffle plate in the second clamping conveyor belt according to an embodiment of the present invention.

[0036] Fig.12 Schematic diagram of the structure of the centering adjustment device in an embodiment of the present invention.

[0037] Fig.13 It is a top sectional view of the centering adjustment device in an embodiment of the present invention.

[0038] Fig.14 Detailed description of the invention The figure is an exploded view of the waste collection mechanism in the embodiment of the present invention.

[0039] Fig.15 Schematic diagram of the structure of the bracket in the embodiment of the present invention.

[0040] Fig.16 Schematic diagram of the structure of the bracket in the embodiment of the present invention.

[0041] Fig.17It is a structural exploded view of the driving nut in the bracket according to an embodiment of the present invention.

[0042] Fig.18 It is a schematic diagram of the assembly of the transmission nut, the support plate and the adjustment block in an embodiment of the present invention.

[0043] Fig.19 It is a schematic diagram of the side structure of the bracket in an embodiment of the present invention.

[0044] Fig. 20 for Fig.19 Cross-sectional view of section AA.

[0045] Fig.21 Schematic diagram of the structure of the electromagnetic induction heating module in an embodiment of the present invention.

[0046] Fig. 22 Schematic diagram of the structure of the base in the embodiment of the present invention.

[0047] Fig.23 It is a schematic structural diagram of a frame base in a machine base according to an embodiment of the present invention.

[0048] Fig.24 Schematic diagram of the structure of the height adjustment system in an embodiment of the present invention.

[0049] Fig.25 It is a schematic diagram of the structure of the front conveyor belt or the rear conveyor belt in an embodiment of the present invention.

[0050] Fig.26 It is a schematic structural diagram of the front conveyor belt or the rear conveyor belt from another angle in an embodiment of the present invention.

[0051] Figure numerals: 1-packaging bottle; 2-frame; 3-conveyor belt; 4-electromagnetic induction heating module; 5-base; 6-front conveyor belt; 7-first clamping conveyor belt; 8-second clamping conveyor belt; 9-rear conveyor belt; 10-bracket; 11-waste collection mechanism; 12-centering adjustment device; 41-main machine; 42-terminal; 43-electromagnetic induction heating plate; 51-frame base; 52-height adjustment system; 5101-fixed plate; 5102-supporting foot; 5103-universal wheel; 5201-third hand wheel; 5202-driving gear shaft; 5203-driving gear; 5204-driven gear; 5205-driven gear shaft; 5206-main synchronous wheel; 5207-first slave synchronous wheel; 5208-second slave synchronous wheel; 5209-tensioning wheel; 5210-first adjusting screw rod; 5211-first adjusting rod; 5212-first adjusting base; 5213-first adjusting nut; 5214-second adjusting screw rod; 5215-second adjusting rod; 5216-second adjusting base; 5217-second adjusting nut; 5218-light rod; 5219-limiting sleeve; 5220-second synchronous belt; 61-conveyor belt; 62-driving motor; 63-supporting plate; 701-driving wheel; 702-driven wheel; 703-first synchronous belt; 704- Middle clamping block; 705-motor; 706-first top plate; 707-first bottom plate; 708-first pulley; 709-second pulley; 710-third pulley; 711-belt; 801-second top plate; 802-second bottom plate; 803-baffle; 804-cylinder; 805-compression spring; 806-U-shaped groove; 8021-cylinder mounting groove; 8022-rotating shaft mounting hole; 8023-spring mounting groove; 8031-rotating shaft; 8032-sponge; 1001-bottom fixing seat; 1002-cover tube; 1003-transmission screw; 1004-transmission nut; 10041-nut; 10042-guide block; 1005-end face cover; 1006-second hand wheel; 1007-limiting groove; 1008-adjusting block; 1009-support plate; 1010-hanging plate 1101-base plate; 11011-receiving port; 1102-waste collection bucket; 11021-opening; 1103-drawer; 1201-first hand wheel; 1202-long fixed plate; 1203-short fixed plate; 1204-screw rod; 1205-guide rod; 1206-single-row sprocket; 1207-first chain; 1208-double-row sprocket; 1209-second chain; 1210-distance scale display; 1211-left-hand nut; 1212-right-hand nut. DETAILED DESCRIPTION

[0052] The structure of the existing packaging bottle aluminum foil sealing machine is as follows Figure 1As shown, it includes a conveyor belt 3, a frame 2 and an electromagnetic induction heating module 4. The packaging bottle 1 is placed on the conveyor belt 3 for transmission. When it reaches the electromagnetic induction heating module 4, the aluminum foil in the bottle cap is heated and heat-sealed.

[0053] A packaging bottle aluminum foil sealing machine of the present invention, such as Figure 2 As shown, the aluminum foil sealing device for round packaging bottles 1 (including plastic bottles or glass bottles) is used. Aluminum foil is pre-placed between the bottle cap and the bottle mouth of the packaging bottle 1. The device comprises a machine base 5 and a front conveyor belt 6, a clamping conveyor device, a rear conveyor belt 9, an electromagnetic induction heating module 4, a bracket 10, a waste collection mechanism 11 and a centering adjustment device 12 arranged on the machine base 5. The front conveyor belt 6, the clamping conveyor device and the rear conveyor belt 9 are connected in sequence. The electromagnetic induction heating module 4 is installed on the bracket 10 and is located above the clamping conveyor device. The packaging bottle 1 passes through the front conveyor belt 6, the clamping conveyor device and the rear conveyor belt 9 in sequence. Belt 9, and when passing through the clamping and conveying device, the aluminum foil at the mouth of the packaging bottle 1 is heat-sealed on the bottle mouth by the electromagnetic induction heating module 4; the clamping and conveying device includes a first clamping conveyor belt 7 and a second clamping conveyor belt 8 arranged in parallel with each other, and the first clamping conveyor belt 7 and the second clamping conveyor belt 8 have different conveying speeds. Due to the different running speeds of the two conveyor belts, the packaging bottle 1 rotates, and the packaging bottle 1 is placed between the first clamping conveyor belt 7 and the second clamping conveyor belt 8 and rotates at a uniform speed to be conveyed forward; the waste collection mechanism 11 is arranged directly below the clamping and conveying device, and is used to collect rejected unqualified products. In this embodiment, the front conveyor belt 6 and the rear conveyor belt 9 are both straight conveyor belts 3, and the packaging bottle 1 is transmitted by the friction between the bottom of the bottle and the conveyor belt 3. When it reaches the clamping and conveying device, it is transmitted by clamping the bottle body instead, and will not shake or tip over. At the same time, the self-rotation can improve the uniformity of the heating of the aluminum foil and make the aluminum foil adhere firmly.

[0054] like Figures 3 to 7As shown, the first clamping conveyor belt 7 includes a first top plate 706, a first bottom plate 707, an intermediate clamping block 704, a first synchronous belt 703, a motor 705, a pulley, a belt 711, a driving wheel 701 and a driven wheel 702. The intermediate clamping block 704 is arranged between the first top plate 706 and the first bottom plate 707, and the portion for clamping the packaging bottle 1 protrudes outside the first top plate 706 and the first bottom plate 707. The driving wheel 701 and the driven wheel 702 are respectively installed At both ends of the middle clamping block 704, the first synchronous belt 703 is installed on the driving wheel 701 and the driven wheel 702 and surrounds the side of the middle clamping block 704, so that the first synchronous belt 703 also protrudes from the first top plate 706 and the first bottom plate 707. The motor 705 is connected to the driving wheel 701 through a pulley and a belt 711 to drive the driving wheel 701 to rotate. The driving wheel 701 rotates to drive the first synchronous belt 703 and the driven wheel 702 to operate. The first clamping conveyor belt 7 can also be other similar structures with the same principle, especially the transmission forms between the motor 705 and the driving wheel 701 are various, which can be used in the present invention.

[0055] As an implementation method of the transmission between the motor 705 and the driving wheel 701 in the first clamping conveyor belt 7, Figure 3 As shown, the motor 705 is installed at the bottom of the first base plate 707, and the pulleys include a first pulley 708, a second pulley 709 and a third pulley 710. The first pulley 708 is connected to the output shaft of the motor 705, and the third pulley 710 is connected to the axle of the driving wheel 701. The output shaft of the motor 705 is perpendicular to the axle of the driving wheel 701. The second pulley 709 is fixed on the first base plate 707, which is a double-row pulley. The rotating shaft of the second pulley 709 is perpendicular to the axle of the driving wheel 701. The belt passes through the first pulley 708, the second pulley 709 and the third pulley 710 in sequence to transmit the power of the motor 705 to the driving wheel 701. In this way, the direction of the power output of the motor 705 is changed, which is convenient for the installation of the equipment.

[0056] like Figures 8 to 11As shown, the second clamping conveyor belt 8 has a different conveying speed from the first clamping conveyor belt 7, and may be similar in structure to the first clamping conveyor belt 7, but with different speeds. As an improved solution of the present invention, the second clamping conveyor belt 8 may be a stationary structure, that is, the speed of the second clamping conveyor belt 8 is zero, and the structure has no conveyor belt, but only a clamping structure. As one of the structures, the second clamping conveyor belt 8 includes a second top plate 801, a second bottom plate 802, a baffle 803, a cylinder 804 and a compression spring 805. The second top plate 801 and the second bottom plate 802 are fixed together up and down and a U-shaped groove 806 extending along the length direction is formed at the middle connection. The connection between the second top plate 801 and the second bottom plate 802 is also provided with a shaft mounting hole 8022, a cylinder mounting groove 8021 and a spring mounting groove 8023. The shaft mounting hole 8022 is located near the end of the second top plate 801 and the second bottom plate 802. The baffle 803 is provided with a shaft 8031. The baffle 803 is connected to the shaft through the shaft 8031. The shaft mounting hole 8022 is installed in the U-shaped groove 806 and its clamping surface protrudes from the side of the second top plate 801 and the second bottom plate 802; the spring mounting groove 8023 is located at one end close to the shaft mounting hole 8022, and the cylinder mounting groove 8021 is located at the other end away from the shaft mounting hole 8022. The compression spring 805 is installed in the spring mounting groove 8023, one end of which contacts the inner wall of the spring mounting groove 8023, and the other end contacts the back of the baffle 803; the cylinder 804 is installed in the cylinder mounting groove 8021, which is connected to the back of the baffle 803. When the material needs to be rejected, the cylinder 804 drives the baffle 803 to retreat. The spring forms a lever with the shaft 8031 ​​as a fulcrum, so that the two ends of the baffle 803 can move within a certain range to fine-tune the distance between the baffle 803 and the synchronous belt, so as to adjust the clamping force of the packaging bottle 1.

[0057] In the above scheme, the first synchronous belt 703 and the baffle 803 are two clamping surfaces of the packaging bottle 1. When working normally, the cylinder 804 presses against the baffle 803 to clamp the packaging bottle 1. When working abnormally and the clamped packaging bottle 1 needs to be rejected, the system controls the cylinder 804 to drive the baffle 803 to retreat so that the distance between the baffle 803 and the synchronous belt is increased, and the packaging bottle 1 falls into the waste rejection mechanism below.

[0058] In this embodiment, the first top plate 706, the first bottom plate 707, the second top plate 801, the second bottom plate 802, the middle clamping block 704, the first synchronous belt 703, and the baffle 803 are all made of non-metallic materials to prevent heating by electromagnetic induction. For example, the baffle 803 can be made of nylon; a sponge 8032 is provided on the clamping surface of the baffle 803.

[0059] In order to facilitate the adjustment of the distance between the two clamping surfaces in the clamping conveyor device to accommodate packaging bottles 1 of different diameters, the centering adjustment device 12 is used to adjust the installation position of the clamping conveyor device, thereby adjusting the centerline position of the clamped packaging bottle 1 to accommodate packaging bottles 1 of different diameters, such as Fig.12 , Fig.13 As shown, the centering adjustment device 12 includes two distance adjustment mechanisms with the same structure, and the two distance adjustment mechanisms are symmetrically located at the feeding end and the discharging end of the clamping conveyor device; the distance adjustment mechanism includes a guide rod 1205, a screw rod 1204, a short fixing plate 1203, a long fixing plate 1202, a single-row sprocket 1206, a double-row sprocket 1208, a first chain 1207, a left-handed nut 1211, a right-handed nut 1212, and a distance scale display 12 10 and the first hand wheel 1201, the short fixed plate 1203 and the long fixed plate 1202 are respectively two pieces, the two long fixed plates 1202 are fixed on the machine base 5, the screw rod 1204 is rotatably connected to the two long fixed plates 1202, the screw rod 1204 is divided into two sections, one section is a left-handed transmission thread, and the other section is a right-handed transmission thread. The left-handed transmission thread is threaded with the left-handed nut 1211, and the right-handed transmission thread is threaded with the right-handed nut 1212. Nut 1212, the two short fixed plates 1203 are fixedly connected to the left-handed nut 1211 and the right-handed nut 1212 respectively; the guide rod 1205 is fixed between the two long fixed plates 1202 and is parallel to the screw rod 1204, and the two short fixed plates 1203 are simultaneously and respectively sleeved on the guide rod 1205 through sliding sleeves, the first clamping conveyor belt 7 and the second clamping conveyor belt 8 are fixedly connected to the two short fixed plates 1203 respectively, and the distance between the first clamping conveyor belt 7 and the second clamping conveyor belt 8 is adjusted by adjusting the distance between the two short fixed plates 1203; the first hand wheel 1201 is installed at one end of the screw rod 1204, and the distance scale display 1210 is fixed on a long fixed plate 1202 close to the first hand wheel 1201, and there are scale values ​​on the distance scale display 1210, and the distance between the two clamping conveyor belts is obtained by reading the scale for accurate distance adjustment. The distance scale display 1210 is a standard part in the market and can be purchased externally, such as a SIKO position indicator, including a dial display type and an electronic digital display type, both of which can be used in the present invention.

[0060] The single-row sprocket 1206 is installed at the other end of the screw rod 1204 away from the first handwheel 1201, the double-row sprocket 1208 is connected to the single-row sprocket 1206 through the first chain 1207, and the two distance adjustment mechanisms are connected to each other by connecting the double-row sprockets 1208 thereon through the second chain 1209.

[0061] The working principle of the above-mentioned centering adjustment device 12 is as follows: any first hand wheel 1201 is rotated left or right to drive the corresponding screw rod 1204 to rotate left or right, and the screw rod 1204 drives the short fixed plate 1203 connected thereto to move through the left-hand nut 1211 or the right-hand nut 1212; the rotation of the screw rod 1204 simultaneously drives the single-row sprocket 1206 to rotate, and the single-row sprocket 1206 drives the double-row sprocket 1208 to rotate through the first chain 1207, and the double-row sprocket 1208 drives the double-row sprocket 1208 in another distance adjustment mechanism to rotate through the second chain 1209, and The same principle is used to drive the single-row sprocket 1206, the screw rod 1204 to rotate, and the short fixed plate 1203 to move; the two short fixed plates 1203 on the same side of the two distance adjustment mechanisms move simultaneously, thereby driving the first clamping conveyor belt 7 or the second clamping conveyor belt 8 connected thereto to move, thereby adjusting the distance between the first clamping conveyor belt 7 and the second clamping conveyor belt 8; the left or right rotation of the first hand wheel 1201 corresponds to the movement of the short fixed plates 1203 on different sides, and the short fixed plates 1203 on different sides correspond to the connection of the first clamping conveyor belt 7 or the second clamping conveyor belt 8. The left-handed nut 1211 and the right-handed nut 1212 are fixed to the short fixed plate 1203 by top screws, respectively, and the sliding sleeve adopts a universal part, with an oil groove on the outer ring, a through hole to introduce lubricating oil into the inner ring, and fixed by top screws.

[0062] like Fig.14 As shown, the waste collecting mechanism 11 is arranged below the clamping and conveying device, and includes a base plate 1101, a waste collecting hopper 1102 and a drawer 1103. A receiving port 11011 is opened in the middle of the base plate 1101. The waste collecting hopper 1102 is arranged below the base plate 1101 and directly faces the receiving port 11011. An opening 11021 is provided at the bottom end of the side of the waste receiving hopper. The drawer 1103 can be dragged through the opening 11021 and is arranged in the waste receiving hopper.

[0063] like Figures 15 to 20As shown, the bracket 10 is a height-adjustable structure, which includes a bottom fixing seat 1001, a second hand wheel 1006, an end cover sleeve 1005, a transmission screw 1003, a cover tube 1002, a transmission nut 1004, an adjustment block 1008, a support plate 1009 and a hanging plate 1010. The bottom fixing seat 1001 is fixed on the machine base 5, and the cover tube 1002 is vertically fixed on the bottom fixing seat 1001. One end of the transmission screw 1003 is inserted into the cover tube 1002, and the other end is rotatably connected to the cover tube 1002 through the end cover sleeve 1005, and the end of the transmission screw 1003 exposed at one end of the cover tube 1002 is connected to the second hand wheel 1006. An axial limiting groove 1007 is provided on the side of the cover tube 1002, and the adjustment block 1008 is sleeved on the outside of the cover tube 1002 and can slide up and down along the cover tube 1002. The transmission nut 1004 includes a nut 10041 and a guide block 10042. The nut 10041 is threadedly connected to the transmission screw 1003 located in the cover tube 1002. The guide block 10042 is fixedly arranged on the outer surface of the nut 10041. Its shape matches the shape of the limiting groove 1007 so that the guide block 10042 can move up and down in the limiting groove 1007. The adjustment block 1008 is fixedly connected to the guide block 10042. The adjustment block 1008 is connected to the nut 10041 through the guide block 10042, so that the adjustment block 1008 moves up and down outside the cover tube 1002 along the direction of the limiting groove 1007 as the transmission nut 1004 moves.

[0064] The support plate 1009 is fixedly connected to the adjustment block 1008 from the side, the hanging plate 1010 is vertically installed on the support plate 1009, and the electromagnetic induction heating module 4 is fixedly connected to the hanging plate 1010 to adjust the height of the electromagnetic induction heating module 4. In this embodiment, the top of the electromagnetic induction heating module 4 is installed at the bottom of the hanging plate 1010, which is convenient for the installation of the host 41 and the operation of the electromagnetic induction heating plate 43.

[0065] The working principle of the above-mentioned adjustable height bracket 10 is: rotating the second hand wheel 1006 drives the screw to rotate, drives the transmission nut 1004 to move up and down, and drives the adjustment block 1008 connected to the transmission nut 1004 on the cover tube 1002 to move up and down along the limit groove 1007, and drives the support plate 1009, the hanging plate 1010 and the electromagnetic induction heating module 4 fixedly connected to the adjustment block 1008 to move up and down.

[0066] The base 5 is a structure with adjustable height. Figure 22 to Figure 24As shown, it includes a frame base 51 and a height adjustment system 52 arranged on the frame base 51, the frame base 51 is provided with a horizontal fixing plate 5101, the height adjustment system 52 includes a main transmission mechanism and an adjustment actuator; the main transmission mechanism includes a third hand wheel 5201, a driving gear shaft 5202, a driving gear 5203, a driven gear 5204, a driven gear shaft 5205, a main synchronous wheel 5206, a first slave synchronous wheel 5207, a second slave synchronous wheel 5208, a tensioning wheel 5209 and a second synchronous belt 5220, The third hand wheel 5201, the driving gear shaft 5202, the driving gear 5203, the driven gear 5204, the driven gear shaft 5205 and the main synchronous wheel 5206 are connected in sequence, and the main synchronous wheel 5206, the first slave synchronous wheel 5207, the second slave synchronous wheel 5208 and the tension wheel 5209 are connected in sequence through the second synchronous belt 5220, and the rotation of the third hand wheel 5201 is converted into the synchronous rotation of the main synchronous wheel 5206, the first slave synchronous wheel 5207 and the second slave synchronous wheel 5208; the adjustment actuator includes a first adjustment screw rod 5210, a first adjusting rod 5211, a first adjusting nut 5213, a first adjusting base 5212, a second adjusting screw rod 5214, a second adjusting rod 5215, a second adjusting nut 5217 and a second adjusting base 5216; the first adjusting screw rod 5210 is connected to the first slave synchronous wheel 5207; the first adjusting nut 5213 is screwed to the first adjusting screw rod 5210; the first adjusting base 5212 is fixedly connected to the first adjusting nut 5213; one end of the first adjusting rod 5211 is fixed to the first adjusting base 5212; The other end passes through the fixed plate 5101 on the frame base 51 through a sliding sleeve and is connected to the support plate of the sealing machine; the second adjusting screw rod 5214 is connected to the second slave synchronous wheel 5208, the second adjusting nut 5217 is threadedly connected to the second adjusting screw rod 5214, the second adjusting base 5216 is fixedly connected to the second adjusting nut 5217, one end of the second adjusting rod 5215 is fixed on the second adjusting base 5216, and the other end passes through the fixed plate 5101 on the frame base 51 through a sliding sleeve and is connected to the support plate of the sealing machine.

[0067] The frame base 51 is provided with a support foot 5102 and a universal wheel 5103; the first adjustment rod 5211 and the second adjustment rod 5215 are both provided with a limit sleeve 5219; the driving gear 5203 and the driven gear 5204 are matched bevel gears; the third hand wheel 5201, the driving gear shaft 5202, the driven gear shaft 5205, the first adjustment wire 5210 and the second adjustment wire rod 5214 are respectively connected to the fixed plate 5101 on the frame base 51 through a sliding sleeve. In this embodiment, in order to make the support plate smoothly adjusted, a light rod 5218 is further provided between the first adjustment rod 5211 and the second adjustment rod 5215 to balance the transmission force. The light rod 5218 is fixed to the support plate, and a limit sleeve 5219 is also provided on the light rod 5218.

[0068] The working principle of the above-mentioned adjustable height machine base 5 is: rotating the third hand wheel 5201, driving the driving gear 5203, the driven gear 5204 and the main synchronous wheel 5206 to rotate in turn, thereby driving the first slave synchronous wheel 5207, the second slave synchronous wheel 5208, the tensioning wheel 5209 and the second synchronous belt 5220 to move, the first slave synchronous wheel 5207 and the second slave synchronous wheel 5208 respectively drive the first adjusting screw rod 5210 and the second adjusting screw rod 5214 to rotate, the first adjusting screw rod 5210 and the second adjusting screw rod 5214 respectively drive the first adjusting rod 5211 and the second adjusting rod 5215 to move up and down, so that the support plate of the sealing machine connected thereto moves up and down to adjust the height of the working parts installed on the support plate.

[0069] Other components in the present invention, such as the front conveyor belt 6, the rear conveyor belt 9, and the electromagnetic induction heating module 4, can all adopt existing technologies. The front conveyor belt 6 and the rear conveyor belt 9 of this embodiment have the same structure. Fig.25 , Fig.26 As shown, it includes a driving motor 62, an active roller shaft (not shown in the figure), a driven roller shaft (not shown in the figure), a conveyor belt 61 and a support plate 63. The conveyor belt 61 runs horizontally, and the driving motor 70562 drives the active roller shaft and the driven roller shaft to rotate, thereby driving the conveyor belt 61 to run.

[0070] like Fig.21 As shown, the electromagnetic induction heating module 4 includes a main unit 41, a terminal 42 and an electromagnetic induction heating plate 43 (culvert type). The main unit 41 is equipped with a fan, a main circuit board, a display screen and a control panel, etc. The electromagnetic induction heating plate 43 is connected to the main unit 41 through the terminal 42, and the bottle mouth of the packaging bottle 1 is placed in a concave cavity on the culvert type electromagnetic induction heating plate 43.

[0071] A method for sealing packaging bottles with aluminum foil, using the above-mentioned packaging bottle aluminum foil sealing machine, comprises the following steps:

[0072] S1, after the packaging bottle 1 with aluminum foil placed between the bottle mouth and the bottle cap enters the front conveyor belt 6, it arrives between the first clamping conveyor belt 7 and the second clamping conveyor belt 8 of the clamping conveyor device. Since the speeds of the first clamping conveyor belt 7 and the second clamping conveyor belt 8 are inconsistent, under the joint action of the first clamping conveyor belt 7 and the second clamping conveyor belt 8 on the clamping conveyor device, the packaging bottle 1 turns forward at a uniform speed.

[0073] S2. When the packaging bottle 1 reaches the bottom of the electromagnetic induction heating module 4, the electromagnetic induction coil is energized to generate an electromagnetic field. The aluminum foil on the bottle mouth in the electromagnetic field instantly heats up, melting the hot melt adhesive on the aluminum foil or melting the plastic in contact with the bottle mouth. The hot melt adhesive or plastic is fully melted due to the rotation of the bottle mouth. After the packaging bottle 1 leaves the electromagnetic field and cools down, the aluminum foil and the bottle mouth of the packaging bottle 1 will be firmly bonded together. If it is a plastic bottle and the plastic of the plastic bottle is easy to melt, the plastic of the plastic bottle mouth can be melted to bond with the aluminum foil; if it is a glass bottle or a plastic bottle of non-meltable plastic, an aluminum foil gasket with hot melt adhesive can be used. The aluminum foil gasket is bonded to the bottle mouth through the melting of the hot melt adhesive on it.

[0074] When production is abnormal, the distance between the first clamping conveyor belt 7 and the second clamping conveyor belt 8 is adjusted to make the clamped packaging bottles 1 fall off the production line, thereby preventing poorly sealed bottles from entering the subsequent process.

[0075] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not deviate from the present invention should be included in the patent scope of this case.

Claims

1. A packaging bottle aluminum foil sealing machine, used for aluminum foil sealing of cylindrical packaging bottles, characterized in that: The invention comprises a machine base and a front conveyor belt, a clamping conveyor device, a rear conveyor belt, an electromagnetic induction heating module, a bracket and a waste collection mechanism arranged on the machine base, wherein the front conveyor belt, the clamping conveyor device and the rear conveyor belt are connected in sequence, the electromagnetic induction heating module is installed on the bracket and is located above the clamping conveyor device, the packaging bottle passes through the front conveyor belt, the clamping conveyor device and the rear conveyor belt in sequence, and the aluminum foil at the mouth of the packaging bottle is heat-sealed on the bottle mouth by the electromagnetic induction heating module when passing through the clamping conveyor device; the clamping conveyor device comprises a first clamping conveyor belt and a second clamping conveyor belt arranged in parallel with each other, the first clamping conveyor belt and the second clamping conveyor belt have different conveying speeds, the packaging bottle is placed between the first clamping conveyor belt and the second clamping conveyor belt, and rotates at a uniform speed to be conveyed forward; the waste collection mechanism is arranged directly below the clamping conveyor device, and is used to collect rejected unqualified products; The first clamping conveyor belt comprises a first top plate, a first bottom plate, an intermediate clamping block, a first synchronous belt, a motor, a pulley, a belt, a driving wheel and a driven wheel. The intermediate clamping block is arranged between the first top plate and the first bottom plate, and the portion for clamping the packaging bottle protrudes out of the first top plate and the first bottom plate. The driving wheel and the driven wheel are respectively mounted on both ends of the intermediate clamping block. The first synchronous belt is mounted on the driving wheel and the driven wheel and surrounds the side of the intermediate clamping block, so that the first synchronous belt also protrudes out of the first top plate and the first bottom plate. The motor is connected to the driving wheel through the pulley and the belt to drive the driving wheel to rotate. The motor is installed at the bottom of the first base plate, and the pulleys include a first pulley, a second pulley and a third pulley. The first pulley is connected to the output shaft of the motor, and the third pulley is connected to the axle of the driving wheel. The output shaft of the motor is perpendicular to the axle of the driving wheel. The second pulley is fixed to the first base plate and is a double-row pulley. The rotating shaft of the second pulley is perpendicular to the axle of the driving wheel. The belt passes around the first pulley, the second pulley and the third pulley in sequence to transmit the power of the motor to the driving wheel. The second clamping conveyor belt is a stationary structure, including a second top plate, a second bottom plate, a baffle, a cylinder and a compression spring. The second top plate and the second bottom plate are fixed together up and down and a U-shaped groove extending in the length direction is formed at the middle connection. A shaft mounting hole, a cylinder mounting groove and a spring mounting groove are also provided at the connection between the second top plate and the second bottom plate. The shaft mounting hole is located at the end close to the second top plate and the second bottom plate. A shaft is provided on the baffle. The baffle is installed in the U-shaped groove through the shaft and the shaft mounting hole, and its clamping surface protrudes from the side of the second top plate and the second bottom plate; the spring mounting groove is located at one end close to the shaft mounting hole, and the cylinder mounting groove is located at the other end away from the shaft mounting hole. The compression spring is installed in the spring mounting groove, one end of which contacts the inner wall of the spring mounting groove, and the other end contacts the back of the baffle; the cylinder is installed in the cylinder mounting groove, which is connected to the back of the baffle, and the cylinder drives the baffle to retreat when it is necessary to remove materials.

2. The aluminum foil sealing machine for packaging bottles according to claim 1, characterized in that: The machine base is also provided with a centering adjustment device, which is used to adjust the installation position of the clamping and conveying device, so as to adjust the center line position of the clamped packaging bottle to adapt to packaging bottles of different diameters. The centering adjustment device includes two distance adjustment mechanisms with the same structure and symmetrically arranged; the distance adjustment mechanism includes a guide rod, a screw rod, a short fixed plate, a long fixed plate, a single-row sprocket, a double-row sprocket, a first chain, a left-hand nut, a right-hand nut, a distance scale display and a first handwheel, the short fixed plate and the long fixed plate each have two pieces, the two long fixed plates are fixed on the machine base, the screw rod is rotatably connected to the two long fixed plates, the guide rod is fixed between the two long fixed plates and is parallel to the screw rod, the two short fixed plates The fixing plates are movably mounted on the screw rod through the left-hand nut and the right-hand nut respectively, and the two short fixing plates are slidably mounted on the guide rod through sliding sleeves respectively. The first clamping conveyor belt and the second clamping conveyor belt are fixedly connected to the two short fixing plates respectively, and the distance between the first clamping conveyor belt and the second clamping conveyor belt is adjusted by adjusting the distance between the two short fixing plates; the first hand wheel is mounted on one end of the screw rod, and the distance scale display is arranged on a long fixing plate on the screw rod close to the first hand wheel, and the single-row sprocket is mounted on the other end of the screw rod away from the first hand wheel, and the double-row sprocket is connected to the single-row sprocket through the first chain, and the two distance adjustment mechanisms are connected to each other through the second chain.

3. A packaging bottle aluminum foil sealing machine according to claim 1 or 2, characterized in that: The waste collection mechanism is arranged below the clamping and conveying device, and includes a base plate, a waste collection hopper and a drawer. A receiving port is opened in the middle of the base plate, the waste collection hopper is arranged below the base plate and directly opposite to the receiving port, an opening is provided at the bottom end of the side of the waste receiving hopper, and the drawer can be dragged through the opening and arranged in the waste receiving hopper.

4. A packaging bottle aluminum foil sealing machine according to claim 1 or 2, characterized in that: The bracket is a height-adjustable structure, which includes a bottom fixing seat, a second hand wheel, an end cover sleeve, a transmission screw, a cover tube, a transmission nut, an adjustment block, a support plate and a hanging plate. The bottom fixing seat is fixed on the machine base, and the cover tube is vertically fixed on the bottom fixing seat. One end of the transmission screw is inserted into the cover tube, and the other end is rotatably connected to the cover tube through the end cover sleeve, and the end of the transmission screw exposed at one end of the cover tube is connected to the second hand wheel, and the transmission nut is screwed on the transmission screw located in the cover tube; an axial limiting groove is provided on the side of the cover tube, and the adjustment block is sleeved on the outside of the cover tube and can slide up and down along the cover tube, and the adjustment block is fixedly connected to the transmission nut from the limiting groove, so that the adjustment block moves up and down outside the cover tube along the direction of the limiting groove with the transmission nut; the support plate is fixedly connected to the adjustment block from the side, and the hanging plate is vertically installed on the support plate, and the electromagnetic induction heating module is fixedly connected to the hanging plate to adjust the height of the electromagnetic induction heating module.

5. The aluminum foil sealing machine for packaging bottles according to claim 4, characterized in that: The transmission nut includes a nut and a guide block. The nut is threadedly connected to the transmission screw. The guide block is fixedly arranged on the outer side of the nut. Its shape matches the shape of the limit groove so that the guide block can move up and down in the limit groove. The adjustment block is fixedly connected to the guide block so that the adjustment block can move up and down along the limit groove.

6. The aluminum foil sealing machine for packaging bottles according to claim 1 or 2, characterized in that: The machine base is a height-adjustable structure, which includes a frame base and a height adjustment system arranged on the frame base, a horizontal fixed plate is arranged on the frame base, and the height adjustment system includes a main transmission mechanism and an adjustment actuator; the main transmission mechanism includes a third hand wheel, a driving gear shaft, a driving gear, a driven gear, a driven gear shaft, a main synchronous wheel, a first slave synchronous wheel, a second slave synchronous wheel, a tensioning wheel and a second synchronous belt, the third hand wheel, the driving gear shaft, the driving gear, the driven gear, the driven gear shaft and the main synchronous wheel are connected in sequence, the main synchronous wheel, the first slave synchronous wheel, the second slave synchronous wheel and the tensioning wheel are connected in sequence through the second synchronous belt, and the rotation of the third hand wheel is converted into the synchronous rotation of the main synchronous wheel, the first slave synchronous wheel and the second slave synchronous wheel; the adjustment actuator includes a first adjustment screw, a first An adjusting rod, a first adjusting nut, a first adjusting base, a second adjusting screw, a second adjusting rod, a second adjusting nut and a second adjusting base, the first adjusting screw is connected to the first slave synchronous wheel, the first adjusting nut is screwed to the first adjusting screw, the first adjusting base is fixedly connected to the first adjusting nut, one end of the first adjusting rod is fixed to the first adjusting base, and the other end is connected to the support plate of the sealing machine through a sliding sleeve through the fixed plate on the frame base; the second adjusting screw is connected to the second slave synchronous wheel, the second adjusting nut is screwed to the second adjusting screw, the second adjusting base is fixedly connected to the second adjusting nut, one end of the second adjusting rod is fixed to the second adjusting base, and the other end is connected to the support plate of the sealing machine through the sliding sleeve through the fixed plate on the frame base.

7. The aluminum foil sealing machine for packaging bottles according to claim 6, characterized in that: The frame base is provided with supporting feet and universal wheels; the first adjusting rod and the second adjusting rod are both provided with limiting sleeves; the driving gear and the driven gear are matching bevel gears; the third hand wheel, the driving gear shaft, the driven gear shaft, the first adjusting screw and the second adjusting screw are respectively connected to the fixed plate on the frame base through sliding sleeves.

8. A method for sealing packaging bottles with aluminum foil, using the packaging bottle aluminum foil sealing machine as claimed in any one of claims 1 to 7, characterized in that: It includes the following steps: S1, after the packaging bottle with aluminum foil placed between the bottle mouth and the bottle cap enters the front conveyor, it arrives between the first clamping conveyor and the second clamping conveyor of the clamping conveyor. Due to the different speeds of the first clamping conveyor and the second clamping conveyor, under the joint action of the first clamping conveyor and the second clamping conveyor on the clamping conveyor, the packaging bottle turns forward at a uniform speed; S2. When the packaging bottle reaches the bottom of the electromagnetic induction heating module, the electromagnetic induction coil is energized to generate an electromagnetic field. The aluminum foil on the bottle mouth in the electromagnetic field instantly heats up, melting the hot melt adhesive on the aluminum foil or the plastic in contact with the bottle mouth. The hot melt adhesive or plastic is fully melted due to the rotation of the bottle mouth. After the packaging bottle leaves the electromagnetic field and cools down, the aluminum foil and the bottle mouth are bonded together. When production is abnormal, the distance between the first clamping conveyor belt and the second clamping conveyor belt is adjusted to make the clamped packaging bottles fall off the production line, preventing bottles with poor sealing from entering the subsequent process.

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