Packing cylinder cover pressing device

Abstract

A packing cylinder gland device comprises a rack and a gland mechanism, the gland mechanism comprises at least one gland head, and the packing cylinder gland device is characterized by further comprising a position correction mechanism, the position correction mechanism comprises two correction plates and a correction plate position switching mechanism capable of driving the two correction plates to ascend, descend, open and close, and the position correction plate is arranged on the rack. The two correction plates are transversely arranged side by side front and back, the opposite sides of the two correction plates are each provided with at least one limiting notch, and the limiting notches in the two correction plates are the same in number and correspond one to one; the inner wall of the limiting notch is provided with a top cover guiding-in part, a top cover limiting part and a packaging barrel limiting part which are sequentially arranged from top to bottom, and the top cover guiding-in part is provided with a top cover guiding face which gradually inclines inwards from top to bottom. According to the utility model, the positions of the top opening and the top cover of the packaging barrel can be corrected, so that the top cover and the top opening of the packaging barrel are mutually aligned, the top cover can be buckled on the corresponding top opening of the packaging barrel in an accurate position, and the cover pressing operation is smoothly carried out.

Description

Technical Field

[0001] The utility model relates to a packaging machine, in particular to a packaging tube capping device. Background Art

[0002] At present, the cylindrical cans used for packaging crispy foods such as potato chips generally include a packaging tube, a bottom cover, a sealing film and a top cover. The packaging tube has a bottom opening and a top opening. The bottom cover seals the bottom opening of the packaging tube (the bottom cover is usually made of metal material), the sealing film seals the top opening of the packaging tube, and the top cover is buckled on the top opening to cover the outer edge of the sealing film and the top opening. In production, the sealing film is usually first sealed on the top opening of the packaging tube, and then the top cover is buckled on the top opening to close the top opening of the packaging tube, and then the material (such as crispy foods such as potato chips) is filled into the cavity of the packaging tube, and then the bottom cover is installed to seal the bottom opening of the packaging tube.

[0003] Since the top cover must cover the outer edge of the sealing film and the top opening and fit tightly with the outer edge of the top opening of the packaging tube, a large downward pressure needs to be applied to the top cover during the process of installing the top cover (i.e., the capping process). Once the top cover is not aligned with the top opening of the packaging tube, it is easy to cause the packaging tube to deform or be damaged, and the capping operation cannot be completed smoothly, which increases defective and waste products. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a packaging tube capping device, which can correct the position of the top opening of the packaging tube and the top cover, so that the top cover and the top opening of the packaging tube are aligned with each other, and the capping operation is smoothly performed. The technical solution adopted is as follows:

[0005] A packaging tube capping device comprises a frame and a capping mechanism, wherein the capping mechanism is mounted on the frame, and the capping mechanism comprises at least one capping head, and is characterized in that: the packaging tube capping device also comprises a position correction mechanism, which is mounted on the frame and is located below the capping mechanism; the position correction mechanism comprises two correction plates and a correction plate position switching mechanism capable of driving the two correction plates to lift and open and close, the two correction plates are both arranged transversely and arranged side by side front and back, at least one limiting notch is respectively provided on opposite sides of the two correction plates, and the number of limiting notches on the two correction plates is the same and corresponds one to one; the inner wall of the limiting notch comprises a top cover introduction portion, a top cover limiting portion and a packaging tube limiting portion which are arranged in sequence from top to bottom, and the top cover introduction portion comprises a top cover guide surface which is gradually inclined inward from top to bottom.

[0006] Usually, the packaging tube conveying device has a forward section and a return section, and the position correction mechanism is located above the forward section of the packaging tube conveying device. In the previous process, the packaging tube pick-up and placement mechanism places the packaging tube on the packaging tube conveying device (usually on the forward section of the packaging tube conveying device). When the packaging tube conveying device conveys the packaging tube to the position corresponding to the packaging tube capping device, the two correction plates are driven by the correction plate position switching mechanism and are respectively located on the front and rear sides of the top of the packaging tube. Then the two correction plates move toward each other (that is, the two correction plates approach each other), and the corresponding limiting notches of the two correction plates approach each other. If the position of the packaging tube is slightly deviated, the limiting part of the packaging tube will push the top of the packaging tube to move slightly in the horizontal direction during the process of the two limiting notches approaching each other, so as to correct the position of the top of the packaging tube. After the two correction plates move toward each other and into position, the corresponding pair of limiting notches on the two correction plates will surround or clamp the top of the packaging tube (which can make the packaging tube The tube limiting portion is in close contact with the outer wall of the top of the packaging tube, and the opening of the top of the packaging tube is in a space surrounded by the top cover limiting portion of a pair of limiting notches), to achieve position calibration and positioning of the top opening of the packaging tube, and at the same time, the top cover is placed on the top cover introducing portion of a pair of limiting notches, and the position of the top cover is calibrated during the process of descending along the top cover guide surface, so that the top cover is aligned with the top opening of the packaging tube; then the top cover enters the space surrounded by the top cover limiting portion of a pair of limiting notches, and overlaps on the top opening of the packaging tube; then each capping head in the capping mechanism descends, and each capping head presses down the corresponding top cover respectively, so that the top cover is buckled on the corresponding top opening of the packaging tube, thereby completing the installation of the top cover.

[0007] In the present utility model, the transverse direction refers to a direction perpendicular to the conveying direction of the packaging tube conveying device, which is usually also called the left-right direction.

[0008] Usually, the two correction plates are provided with a plurality of limit notches arranged in sequence in the transverse direction on opposite sides; the capping mechanism includes a plurality of capping heads arranged in sequence in the transverse direction; the limit notches on the correction plate are the same in number as the capping heads and correspond one to one. Preferably, the plurality of limit notches on the correction plate are arranged at equal intervals in the transverse direction, and the plurality of capping heads in the capping mechanism are arranged at equal intervals in the transverse direction. Each time the packaging tube conveying device moves forward, a group of packaging tubes (usually a plurality of packaging tubes arranged in sequence in the transverse direction) are simultaneously conveyed to the position corresponding to the packaging tube capping device, and then the capping heads in the capping mechanism perform the capping operation simultaneously.

[0009] In the preferred embodiment, the top cover limiting portion has a top cover limiting surface capable of limiting the top cover, and the upper edge of the top cover limiting surface is connected to the lower edge of the top cover guiding surface; the packaging tube limiting portion has a packaging tube limiting surface capable of limiting the packaging tube, and the packaging tube limiting surface is located inside the top cover limiting surface, and a step is provided between the lower edge of the top cover limiting surface and the upper edge of the packaging tube limiting surface. In the case where the packaging tube is cylindrical, the top cover limiting surface and the packaging tube limiting surface are both arc-shaped surfaces, and the radius of the top cover limiting surface is larger than the packaging tube limiting surface. After the two correction plates move toward each other (i.e., the two correction plates move closer to each other), it is best to allow the corresponding pair of limiting notches on the two correction plates to clamp the top of the packaging tube (at this time, the packaging tube limiting surface is in close contact with the outer wall of the top of the packaging tube), and then the capping mechanism performs the capping operation.

[0010] In a preferred embodiment, the correction plate position switching mechanism includes a lifting seat, a lifting mechanism capable of driving the lifting seat to lift and lower, and a correction plate opening and closing mechanism capable of driving the two correction plates to open and close, the lifting mechanism is installed on the frame, and the correction plate opening and closing mechanism is installed on the lifting seat. The correction plate opening and closing mechanism drives the two correction plates to open and close, which means driving the two correction plates to move in opposite directions (the two correction plates are separated) or towards each other (the two correction plates are brought closer to each other). When the lifting mechanism drives the lifting seat to lift and lower, the correction plate opening and closing mechanism and the two correction plates are lifted and lowered together with the lifting seat.

[0011] In a more preferred embodiment, the correction plate opening and closing mechanism includes two finger cylinders, both of which are mounted on the lifting seat and arranged side by side. The left ends of the two correction plates are respectively connected to the two fingers of the left finger cylinder, and the right ends of the two correction plates are respectively connected to the two fingers of the right finger cylinder. In the initial state, the two correction plates are separated; when the packaging tube conveying device conveys the packaging tube to the position corresponding to the packaging tube capping device, the lifting mechanism drives the two finger cylinders and the two correction plates to descend together with the lifting seat. After the two correction plates are descended, they are respectively located at the front and rear sides of the top of the packaging tube, and the top of each packaging tube is located between the corresponding limit notches of the two correction plates; then the two finger cylinders drive the two correction plates to move closer to each other to correct the position of the top of the packaging tube.

[0012] Usually, the capping mechanism and the position correction mechanism are in different positions. In order to simplify the structure of the whole machine, it is preferred to use the same capping head to realize the capping and capping operations. In a preferred scheme, the capping mechanism also includes a capping head mounting plate and a capping head mounting plate translation mechanism capable of driving the capping head mounting plate to reciprocate and translate, and the capping head mounting plate translation mechanism is installed on the lifting seat; the capping head includes a capping and capping cylinder, a suction cup seat, a suction cup and a capping component. The capping and capping cylinder is a double-headed cylinder, and the cylinder body of the capping and capping cylinder is installed on the capping head mounting plate and is in an up-and-down direction. The piston rod of the capping and capping cylinder is provided with a first gas channel, and the suction cup seat and the capping component are both installed at the lower end of the piston rod of the capping and capping cylinder. The suction cup is installed on the suction cup seat, and a second gas channel is provided in the suction cup seat. The second gas channel connects the cavity of the suction cup with the lower end of the first gas channel, and the capping component is located outside the suction cup. When the lifting mechanism drives the lifting seat to rise and fall, the capping head mounting plate translation mechanism, the capping head mounting plate, each capping head, the correction plate opening and closing mechanism and the two correction plates rise and fall together with the lifting seat. The upper end of the first gas channel is used to communicate with the vacuum device, and the vacuum device can vacuum the cavity of the suction cup through the first gas channel and the second gas channel. When the capping work is performed, the capping head mounting plate translation mechanism drives the capping head mounting plate and each capping head to translate to the top of the cap storage mechanism, and then the capping cylinder drives the suction cup to descend, so that the suction cup contacts the upper surface of the top cover, the cavity of the suction cup is evacuated, the suction cup wall is deformed and close to the top cover, and the top cover is sucked; then the suction cup is driven to rise by the capping cylinder to take out the top cover from the cap storage mechanism; then the capping head mounting plate translation mechanism drives the capping head mounting plate, each capping head and each top cover to translate together, so that each capping head and the top cover arrive above the position correction mechanism together; then the lifting mechanism drives the lifting seat to descend, and the correction plate opening and closing mechanism, the two correction plates, the capping mechanism and each top cover descend together with the lifting seat; driven by the correction plate opening and closing mechanism, the two correction plates move toward each other (the two correction plates move closer to each other) to correct the position of the top of the packaging tube.After the position of the top of the packaging tube is corrected, each capping cylinder drives the capping components, the suction cup and the top cover thereon to descend. The position of the top cover is calibrated during the descent along the top cover guide surface (the suction cup may be slightly deformed during the calibration process), so that the top cover is aligned with the top of the packaging tube. Each capping component presses down the corresponding top cover respectively, so that the top cover is buckled on the top of the corresponding packaging tube, thereby completing the installation of the top cover. Subsequently, the airflow enters the cavity of the suction cup through the first gas channel and the second gas channel, and the vacuum suction of the suction cup on the top cover is released; or, after the position of the top of the packaging tube is corrected, the airflow Enter the cavity of the suction cup through the first gas channel and the second gas channel, release the vacuum suction of the suction cup on the top cover, and the top cover is placed on the top cover guide surface of the top cover introduction part of the pair of limiting notches. The position of the top cover is calibrated during the process of descending along the top cover guide surface, so that the top cover is aligned with the top of the packaging tube. Then the top cover enters the space surrounded by the top cover limiting part of the pair of limiting notches, and overlaps on the top opening of the packaging tube. Then each suction cover pressing cylinder drives the pressing component to descend, and each pressing component presses down the corresponding top cover respectively, so that the top cover is buckled on the top of the corresponding packaging tube, thereby completing the installation of the top cover. After the installation of the top cover is completed, each suction cover pressing cylinder can drive the pressing component to rise and reset, and the lifting mechanism drives the lifting seat, the correction plate opening and closing mechanism, the two correction plates, and the pressing mechanism to rise and reset together, completing a round of suction cover pressing action.

[0013] In a specific scheme, the above-mentioned capping head mounting plate translation mechanism includes a capping head mounting plate translation cylinder and two guide blocks, the two guide blocks are installed on the lifting seat and are arranged side by side left and right, and the guide blocks are provided with guide grooves parallel to the capping head mounting plate translation cylinder; a transverse connecting strip and two guide strips are provided on the capping head mounting plate, the two guide strips are arranged side by side left and right, and the two ends of the transverse connecting strip are respectively connected to the two guide strips; the two guide strips correspond one by one to the two guide grooves, the guide strips are in the corresponding guide grooves and slide with the guide grooves; the cylinder body of the capping head mounting plate translation cylinder is installed on the lifting seat in the horizontal direction, and the piston rod of the capping head mounting plate translation cylinder is connected to the transverse connecting strip. In another specific scheme, the above-mentioned capping head mounting plate translation mechanism includes a capping head mounting plate translation cylinder and a translation guide rail. The cylinder body of the capping head mounting plate translation cylinder is installed on the lifting seat in the horizontal direction. The piston rod of the capping head mounting plate translation cylinder is connected to the capping head mounting plate. The translation guide rail is installed on the lifting seat and is parallel to the capping head mounting plate translation cylinder. The capping head mounting plate is provided with a slider that slides with the translation guide rail.

[0014] In a specific solution, the lifting mechanism includes a servo motor, a horizontal rotating shaft, a left crank, a left connecting rod, a right crank, a right connecting rod, a plurality of guide columns and a plurality of guide sleeves; each guide column is fixedly mounted on the frame and is oriented up and down, each guide sleeve is fixedly mounted on the lifting seat, the number of guide sleeves is the same as that of the guide columns and they correspond one to one, the guide sleeves are sleeved on the guide columns and can move up and down along the guide columns; the horizontal rotating shaft is rotatably mounted on the frame and is oriented left and right, the power output shaft of the servo motor is transmission-connected to the horizontal rotating shaft, one end of the left crank is fixedly connected to the left end of the horizontal rotating shaft, the other end of the left crank is hinged to the upper end of the left connecting rod, the lower end of the left connecting rod is hinged to the lifting seat, one end of the right crank is fixedly connected to the right end of the horizontal rotating shaft, the other end of the right crank is hinged to the upper end of the right connecting rod, and the lower end of the right connecting rod is hinged to the lifting seat. Usually, the left crank and the right crank are parallel to each other, and the left connecting rod and the right connecting rod are parallel to each other. When the servo motor is running, its power output shaft drives the horizontal shaft to rotate forward or reverse, and the horizontal shaft drives the left crank and the right crank to swing back and forth at a certain angle around the horizontal shaft; the left crank and the right crank drive the lifting seat and each guide sleeve to lift and lower a certain distance along the guide column through the left connecting rod and the right connecting rod respectively. The use of the servo motor as the power source of the lifting mechanism facilitates the accurate control of the lifting seat stroke; moreover, when the packaging tube sealing machine needs to be used for the top cover installation of a packaging tube of another height, it is only necessary to adjust the number of forward and reverse rotations of the servo motor and change the angle of the reciprocating swing of the left crank and the right crank around the horizontal shaft to adjust the lifting seat stroke to match the height of the packaging tube. Setting up two sets of left and right cranks and connecting rods can make the lifting seat more balanced.

[0015] In another specific scheme, the above-mentioned lifting mechanism includes a servo motor, a horizontal rotating shaft, a crank, a connecting rod, a plurality of guide columns and a plurality of guide sleeves; each guide column is fixedly mounted on the frame and extends up and down, each guide sleeve is fixedly mounted on the lifting seat, the number of guide sleeves is the same as that of guide columns and they correspond one to one, the guide sleeves are sleeved on the guide columns and can move up and down along the guide columns; the horizontal rotating shaft is rotatably mounted on the frame and extends left and right, the power output shaft of the servo motor is transmission-connected to the horizontal rotating shaft, one end of the crank is connected to the horizontal rotating shaft, the other end of the crank is hinged to the upper end of the connecting rod, and the lower end of the connecting rod is hinged to the lifting seat.

[0016] In addition, the lifting mechanism may also be a cam mechanism or a cylinder. For example, the lifting mechanism may include a lifting cylinder, a cylinder body of the lifting cylinder being mounted on a frame, and a piston rod of the lifting cylinder being downwardly directed and connected to a lifting seat.

[0017] The correction plate position switching mechanism may also adopt other structures, as long as it can realize the opening and closing control and lifting and lowering control of the two correction plates. For example, the correction plate position switching mechanism includes two translation seats and an opening and closing mechanism that can drive the two translation seats to move closer or apart from each other. The two translation seats are respectively provided with a lifting mechanism that can drive a correction plate to lift and lower. The lifting mechanism drives the corresponding correction plate to lift and lower; the opening and closing mechanism drives the two translation seats to move in opposite directions or towards each other, and the lifting mechanism and the correction plate on the translation seat move together with the translation seat to realize the opening and closing control of the two correction plates.

[0018] In addition, when it is not necessary to use the same capping head to realize the capping and capping operations (for example, a capping and placing mechanism is used to realize the taking and placing of the top cap, and the above-mentioned capping mechanism is used to perform the capping operation), the above-mentioned capping mechanism may adopt other structures, for example: the above-mentioned capping mechanism includes a capping head mounting plate and a capping head mounting plate lifting mechanism capable of driving the capping head mounting plate to rise and fall, and the capping head is mounted on the capping head mounting plate. The specific structure of the capping head mounting plate lifting mechanism can refer to the above-mentioned lifting mechanism. In this case, the capping head may adopt a capping component fixedly mounted on the capping head mounting plate; or, the capping head includes a capping cylinder and a capping component, the cylinder body of the capping cylinder is mounted on the capping head mounting plate and is oriented up and down, and the capping component is mounted on the lower end of the piston rod of the capping cylinder.

[0019] The utility model can correct the positions of the top opening of the packaging tube and the top cover by arranging a position correction mechanism, so that the top cover and the top opening of the packaging tube are aligned with each other, so that the top cover can be accurately buckled on the corresponding top opening of the packaging tube and the capping operation can be carried out smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A left side view of the packaging tube capping device shown;

[0022] Figure 3 yes Figure 1 A top view of the packaging tube capping device shown;

[0023] Figure 4 It is a structural schematic diagram of the limiting notch in the preferred embodiment of the utility model;

[0024] Figure 5 It is a structural schematic diagram of a capping head in a preferred embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of a preferred embodiment of the utility model when the top cover is buckled on the top of the corresponding packaging tube. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 3 As shown, the packaging tube capping device comprises a frame 1, a capping mechanism and a position correction mechanism. The capping mechanism is mounted on the frame 1, and the capping mechanism comprises at least one capping head 2. The position correction mechanism is mounted on the frame 1 and is located below the capping mechanism; the position correction mechanism comprises two correction plates 3 and a correction plate position switching mechanism capable of driving the two correction plates 3 to rise, fall and open and close. The two correction plates 3 are both arranged horizontally and arranged side by side front and back. At least one limiting notch 4 is respectively provided on the opposite sides of the two correction plates 3, and the number of the limiting notches 4 on the two correction plates 3 is the same and corresponds one to one.

[0027] refer to Figure 4 In this embodiment, the inner wall of the limiting notch 4 has a top cover introduction part 41, a top cover limiting part 42 and a packaging tube limiting part 43 arranged in sequence from top to bottom. The top cover introduction part 41 has a top cover guide surface 44 that gradually tilts inward from top to bottom. The top cover limiting part 42 has a top cover limiting surface 45 that can limit the top cover. The upper edge of the top cover limiting surface 45 is connected to the lower edge of the top cover guiding surface 44. The packaging tube limiting part 43 has a packaging tube limiting surface 46 that can limit the packaging tube. The packaging tube limiting surface 46 is located inside the top cover limiting surface 45. There is a step 47 between the lower edge of the top cover limiting surface 45 and the upper edge of the packaging tube limiting surface 46. In the case of the packaging tube being cylindrical, the top cover limiting surface 45 and the packaging tube limiting surface 46 are both arc-shaped surfaces, and the radius of the top cover limiting surface 45 is larger than that of the packaging tube limiting surface 46. After the two correction plates 3 move toward each other (i.e., the two correction plates move closer to each other), it is best to allow the corresponding pair of limiting notches 4 on the two correction plates 3 to clamp the top of the packaging tube (at this time, the limiting surface of the packaging tube is in close contact with the outer wall of the top of the packaging tube), and then the capping mechanism performs the capping operation.

[0028] In this embodiment, the two correction plates 3 are provided with a plurality of limit notches 4 arranged in sequence in the transverse direction on opposite sides; the capping mechanism includes a plurality of capping heads 2 arranged in sequence in the transverse direction; the limit notches 4 on the correction plate 3 are the same in number as the capping heads 2 and correspond one to one. The plurality of limit notches 4 on the correction plate 3 are arranged at equal intervals in the transverse direction, and the plurality of capping heads 2 in the capping mechanism are arranged at equal intervals in the transverse direction. Each time the packaging tube conveying device moves forward, a group of packaging tubes 5 (a plurality of packaging tubes 5 arranged in sequence in the transverse direction) are simultaneously conveyed to the position corresponding to the packaging tube capping device, and then each capping head 2 in the capping mechanism performs the capping operation simultaneously.

[0029] In this embodiment, the correction plate position switching mechanism includes a lifting seat 6, a lifting mechanism capable of driving the lifting seat 6 to lift and lower, and a correction plate opening and closing mechanism capable of driving the two correction plates 3 to open and close. The lifting mechanism is installed on the frame 1, and the correction plate opening and closing mechanism is installed on the lifting seat 6. The correction plate opening and closing mechanism drives the two correction plates 3 to open and close, which means driving the two correction plates 3 to move back to back (the two correction plates 3 are separated) or to move towards each other (the two correction plates 3 are close to each other). When the lifting mechanism drives the lifting seat 6 to lift and lower, the correction plate opening and closing mechanism and the two correction plates 3 are lifted and lowered together with the lifting seat 6.

[0030] The correction plate opening and closing mechanism includes two finger cylinders 7, both of which are installed on the lifting seat 6 and arranged side by side. The left ends of the two correction plates 3 are respectively connected to the two fingers 71 of the left finger cylinder 7, and the right ends of the two correction plates 3 are respectively connected to the two fingers 71 of the right finger cylinder 7. In the initial state, the two correction plates 3 are separated; when the packaging tube conveying device conveys the packaging tube 5 to the position corresponding to the packaging tube capping device, the lifting mechanism drives the two finger cylinders 7 and the two correction plates 3 to descend together with the lifting seat 6. After the two correction plates 3 are descended, they are respectively located at the front and rear sides of the top of the packaging tube 5, and the top of each packaging tube 5 is located between the corresponding limiting notches 4 of the two correction plates 3; then the two finger cylinders 7 drive the two correction plates 3 to move closer to each other to correct the position of the top of the packaging tube 5.

[0031] The lifting mechanism includes a servo motor 8, a horizontal shaft 9, a left crank 10, a left connecting rod 11, a right crank 12, a right connecting rod 13, a plurality of guide columns 14 and a plurality of guide sleeves 15; each guide column 14 is fixedly mounted on the frame 1 and is in an up-and-down direction, each guide sleeve 15 is fixedly mounted on the lifting seat 6, the number of guide sleeves 15 and the guide columns 14 are the same and correspond one to one, and the guide sleeves 15 are sleeved on the guide columns 14 and can move up and down along the guide columns 14 The horizontal shaft 9 is rotatably mounted on the frame 1 and is oriented left and right. The power output shaft of the servo motor 8 is connected to the horizontal shaft 9 in a transmission manner. One end of the left crank 10 is fixedly connected to the left end of the horizontal shaft 9. The other end of the left crank 10 is hinged to the upper end of the left connecting rod 11. The lower end of the left connecting rod 11 is hinged to the lifting seat 6. One end of the right crank 12 is fixedly connected to the right end of the horizontal shaft 9. The other end of the right crank 12 is hinged to the upper end of the right connecting rod 13. The lower end of the right connecting rod 13 is hinged to the lifting seat 6. The left crank 10 and the right crank 12 are parallel to each other, and the left connecting rod 11 and the right connecting rod 13 are parallel to each other. When the servo motor 8 is running, its power output shaft drives the horizontal shaft 9 to rotate forward or reverse, and the horizontal shaft 9 drives the left crank 10 and the right crank 12 to swing back and forth at a certain angle around the horizontal shaft 9; the left crank 10 and the right crank 12 drive the lifting seat 6 and each guide sleeve 15 to move up and down a certain distance along the guide column 14 through the left connecting rod 11 and the right connecting rod 13 respectively. When the packaging tube sealing machine needs to be used for the top cover installation of packaging tubes of another height, it only needs to adjust the number of forward and reverse rotations of the servo motor 8 and change the angle of the reciprocating swing of the left crank 10 and the right crank 12 around the horizontal shaft 9, so as to adjust the stroke size of the lifting seat to match the height of the packaging tube 5.

[0032] In this embodiment, the capping mechanism also includes a capping head mounting plate 16 and a capping head mounting plate translation mechanism capable of driving the capping head mounting plate 16 to reciprocate and translate, and the capping head mounting plate translation mechanism is installed on the lifting seat 6; the capping head 2 includes a suction capping cylinder 21, a suction cup seat 22, a suction cup 23 and a capping component 24, the suction capping cylinder 21 is a double-headed cylinder, the cylinder body 211 of the suction capping cylinder 21 is installed on the capping head mounting plate 16 and is in an up and down direction, a first gas channel 25 is provided in the piston rod 212 of the suction capping cylinder 21, the suction cup seat 22 and the capping component 24 are both installed at the lower end of the piston rod 212 of the suction capping cylinder 21, the suction cup 23 is installed on the suction cup seat 22, and a second gas channel 26 is provided in the suction cup seat 22, the second gas channel 26 connects the cavity of the suction cup 23 with the lower end of the first gas channel 25, and the capping component 24 is located outside the suction cup 23. When the lifting mechanism drives the lifting seat 6 to rise and fall, the capping head mounting plate translation mechanism, the capping head mounting plate 16, each capping head 2, the correction plate opening and closing mechanism and the two correction plates 3 rise and fall together with the lifting seat 6. The upper end of the first gas channel 25 is used to communicate with the vacuum device, and the vacuum device can vacuum the cavity of the suction cup 23 through the first gas channel 25 and the second gas channel 26.

[0033] The capping head mounting plate translation mechanism includes a capping head mounting plate translation cylinder 17 and two guide blocks 18. The two guide blocks 18 are installed on the lifting seat 6 and are arranged side by side left and right. The guide blocks 18 are provided with guide grooves 181 which are parallel to the capping head mounting plate translation cylinder 17; a transverse connecting strip 19 and two guide strips 20 are provided on the capping head mounting plate 16. The two guide strips 20 are arranged side by side left and right, and the two ends of the transverse connecting strip 19 are respectively connected to the two guide strips 20; the two guide strips 20 correspond to the two guide grooves 181 one by one, and the guide strips 20 are in the corresponding guide grooves 181 and slide in cooperation with the guide grooves 181; the cylinder body of the capping head mounting plate translation cylinder 17 is installed on the lifting seat 6 in the horizontal direction, and the piston rod of the capping head mounting plate translation cylinder 17 is connected to the transverse connecting strip 19.

[0034] refer to Figure 1 and Figure 2 The packaging tube conveying device 01 includes an annular conveyor belt 011 and a plurality of templates 012 mounted on the annular conveyor belt. The templates 012 are arranged at equal intervals on the annular conveyor belt 011. The templates 012 are provided with a plurality of packaging tube positioning blocks 013. The bottom opening of the packaging tube 5 can be sleeved on the packaging tube positioning blocks 013. The annular conveyor belt can be replaced by an annular chain. The packaging tube conveying device has a forward section 01-1 and a return section 01-2. The position correction mechanism is located above the forward section 01-1 of the packaging tube conveying device.

[0035] The following is a brief description of the working principle of the packaging tube capping device:

[0036] In the previous process, the packaging tube 5 is placed on the packaging tube conveying device 01 (placed on the front section 01-1 of the packaging tube conveying device) by the packaging tube picking and placing mechanism. When the packaging tube conveying device 01 conveys the packaging tube to the position corresponding to the packaging tube capping device, the two correction plates 3 are driven by the correction plate position switching mechanism, and are respectively located on the front and rear sides of the top of the packaging tube 5. Then the two correction plates 3 move toward each other (that is, the two correction plates 3 move closer to each other), and the limiting notches 4 corresponding to the two correction plates 3 move closer to each other. If the position of the packaging tube 5 is slightly deviated, the packaging tube limiting portion 43 will push the top of the packaging tube 5 to move slightly in the horizontal direction during the process of the two limiting notches 4 moving closer to each other, so as to correct the position of the top of the packaging tube 5. After the two correction plates 3 move toward each other and into place, the corresponding pair of limiting notches 4 on the two correction plates 3 surround or clamp the top of the packaging tube 5 (so that the limiting surface 46 of the packaging tube can be aligned with the packaging tube 5). The outer wall of the top of the packaging tube 5 is in close contact, and the opening of the top of the packaging tube 5 is in a space surrounded by the top cover limiting surfaces 45 of a pair of limiting notches), to achieve the position calibration and positioning of the top opening of the packaging tube 5. At the same time, the top cover 30 is placed on the top cover introduction part 41 of a pair of limiting notches 4, and the position of the top cover 30 is calibrated during the process of descending along the top cover guide surface 44, so that the top cover 30 is aligned with the top opening of the packaging tube 5; then the top cover 30 enters the space surrounded by the top cover limiting surfaces 45 of a pair of limiting notches 4, and overlaps on the top opening of the packaging tube 5; then each capping head 2 in the capping mechanism descends, and each capping head 2 presses down the corresponding top cover 30 respectively, so that the top cover 30 is buckled on the corresponding top opening of the packaging tube 5, thereby completing the installation of the top cover 30.

[0037] When performing the capping and pressing work, the capping head mounting plate translation cylinder 17 drives the capping head mounting plate 16 and each capping head 2 to translate to the top of the cap storage mechanism, and then the capping and pressing cylinder 21 drives the suction cup 23 to descend, so that the suction cup 23 contacts the upper surface of the top cover 30, the cavity of the suction cup 23 is evacuated, the wall of the suction cup 23 is deformed and closely adheres to the top cover 30, and the top cover 30 is sucked; then the suction cup 23 is driven to rise by the capping and pressing cylinder 21 to take out the top cover 30 from the cap storage mechanism; The plate translation cylinder 17 drives the capping head mounting plate 16, each capping head 2 and each top cover 30 to translate together, so that each capping head 2 and the top cover 30 arrive above the position correction mechanism together; then the lifting mechanism drives the lifting seat 6 to descend, and the correction plate opening and closing mechanism, the two correction plates 3, the capping mechanism and the top covers 30 descend together with the lifting seat 6; under the drive of the correction plate opening and closing mechanism, the two correction plates 3 move toward each other (the two correction plates move close to each other) to perform position correction on the top of the packaging tube 5. After the position of the top of the packaging tube is corrected, each capping cylinder 21 drives the capping component 24, the suction cup 23 and the top cover 30 thereon to descend. The position of the top cover 30 is calibrated in the process of descending along the top cover guide surface 44 (the suction cup 23 may be slightly deformed during the calibration process), so that the top cover 30 is aligned with the top of the packaging tube 5. Each capping component 24 presses down the corresponding top cover 30 respectively, so that the top cover 30 is buckled on the top of the corresponding packaging tube 5, thereby completing the installation of the top cover 30. Subsequently, the air flow enters the cavity of the suction cup 23 through the first gas channel 25 and the second gas channel 26, and the vacuum suction of the suction cup 23 on the top cover 30 is released; or, after the position of the top of the packaging tube is corrected, the air flow The air enters the cavity of the suction cup 23 through the first gas channel 25 and the second gas channel 26, and the vacuum suction of the suction cup 23 on the top cover 30 is released. The top cover 30 is placed on the top cover guide surfaces 44 of a pair of limiting notches 4. The position of the top cover 30 is calibrated during the process of descending along the top cover guide surfaces 44, so that the top cover 30 is aligned with the top of the packaging tube 5. Then the top cover 30 enters the space surrounded by the top cover limiting surfaces 45 of a pair of limiting notches 4, and overlaps on the top opening of the packaging tube 5. Then, each suction and capping cylinder 21 drives the capping component 24 to descend, and each capping component 24 presses down the corresponding top cover 30 respectively, so that the top cover 30 is buckled on the top of the corresponding packaging tube 5, thereby completing the installation of the top cover 30. After the installation of the top cover 30 is completed, each suction and capping cylinder 21 drives the suction cup seat 22, the suction cup 23 and the capping component 24 to rise and reset, and the lifting mechanism drives the lifting seat 6, the correction plate opening and closing mechanism, the two correction plates 3, and the capping mechanism to rise and reset together, completing a round of suction and capping actions.

[0038] In other embodiments, the capping head mounting plate translation mechanism may also include a capping head mounting plate translation cylinder and a translation guide rail. The cylinder body of the capping head mounting plate translation cylinder is installed on the lifting seat in the horizontal direction, and the piston rod of the capping head mounting plate translation cylinder is connected to the capping head mounting plate. The translation guide rail is installed on the lifting seat and is parallel to the capping head mounting plate translation cylinder. The capping head mounting plate is provided with a slider that slides with the translation guide rail.

[0039] In other implementation schemes, the lifting mechanism may also include a servo motor, a horizontal rotating shaft, a crank, a connecting rod, multiple guide columns and multiple guide sleeves; each guide column is fixedly mounted on the frame and runs up and down, each guide sleeve is fixedly mounted on the lifting seat, the number of guide sleeves is the same as that of guide columns and they correspond one to one, the guide sleeves are sleeved on the guide columns and can move up and down along the guide columns; the horizontal rotating shaft can be rotatably mounted on the frame and runs left and right, the power output shaft of the servo motor is transmission-connected to the horizontal rotating shaft, one end of the crank is connected to the horizontal rotating shaft, the other end of the crank is hinged to the upper end of the connecting rod, and the lower end of the connecting rod is hinged to the lifting seat.

[0040] In other embodiments, the correction plate position switching mechanism may also include two translation seats and an opening and closing mechanism capable of driving the two translation seats to move closer or further apart, and each of the two translation seats is provided with a lifting mechanism capable of driving a correction plate to move up and down. The lifting mechanism drives the corresponding correction plate to move up and down; the opening and closing mechanism drives the two translation seats to move in opposite directions or towards each other, and the lifting mechanism and the correction plate on the translation seat move together with the translation seat to realize the opening and closing control of the two correction plates.

[0041] In other embodiments, when it is not necessary to use the same capping head to realize the capping and capping operations (for example, a capping and placing mechanism is used to realize the taking and placing of the top cap, and the capping mechanism is used to perform the capping operation), the capping mechanism may adopt other structures, for example: the capping mechanism includes a capping head mounting plate and a capping head mounting plate lifting mechanism capable of driving the capping head mounting plate to lift, and the capping head is mounted on the capping head mounting plate. In this case, the capping head may adopt a capping component fixedly mounted on the capping head mounting plate; or, the capping head includes a capping cylinder and a capping component, the cylinder body of the capping cylinder is mounted on the capping head mounting plate and is in an up-and-down direction, and the capping component is mounted on the lower end of the piston rod of the capping cylinder.

Claims

1. A packaging tube capping device, comprising a frame and a capping mechanism, wherein the capping mechanism is mounted on the frame and comprises at least one capping head, characterized in that: The packaging tube capping device also includes a position correction mechanism, which is installed on the frame and is located below the capping mechanism; the position correction mechanism includes two correction plates and a correction plate position switching mechanism that can drive the two correction plates to rise, fall, and open and close, the two correction plates are both arranged horizontally and side by side front and back, and at least one limiting notch is respectively provided on opposite sides of the two correction plates, and the number of limiting notches on the two correction plates is the same and corresponds one to one; the inner wall of the limiting notch has a top cover introduction part, a top cover limiting part and a packaging tube limiting part arranged in sequence from top to bottom, and the top cover introduction part has a top cover guide surface that gradually tilts inward from top to bottom.

2. The packaging tube capping device according to claim 1, characterized in that: The opposite sides of the two correction plates are respectively provided with a plurality of limit notches arranged in sequence in the transverse direction; the capping mechanism comprises a plurality of capping heads arranged in sequence in the transverse direction; the limit notches on the correction plates are the same in number as the capping heads and correspond one to one.

3. The packaging tube capping device according to claim 1, characterized in that: The top cover limiting portion has a top cover limiting surface that can limit the top cover, and the upper edge of the top cover limiting surface is connected to the lower edge of the top cover guiding surface; the packaging tube limiting portion has a packaging tube limiting surface that can limit the packaging tube, and the packaging tube limiting surface is located on the inner side of the top cover limiting surface, and there is a step between the lower edge of the top cover limiting surface and the upper edge of the packaging tube limiting surface.

4. The packaging tube capping device according to any one of claims 1 to 3, characterized in that: The correction plate position switching mechanism comprises a lifting seat, a lifting mechanism capable of driving the lifting seat to lift and a correction plate opening and closing mechanism capable of driving two correction plates to open and close. The lifting mechanism is installed on the frame, and the correction plate opening and closing mechanism is installed on the lifting seat.

5. The packaging tube capping device according to claim 4, characterized in that: The correction plate opening and closing mechanism includes two finger cylinders, which are both installed on the lifting seat and arranged side by side. The left ends of the two correction plates are respectively connected to the two fingers of the left finger cylinder, and the right ends of the two correction plates are respectively connected to the two fingers of the right finger cylinder.

6. The packaging tube capping device according to claim 4, characterized in that: The capping mechanism also includes a capping head mounting plate and a capping head mounting plate translation mechanism capable of driving the capping head mounting plate to reciprocate and translate, and the capping head mounting plate translation mechanism is installed on the lifting seat; the capping head includes a suction capping cylinder, a suction cup seat, a suction cup and a capping component, the suction capping cylinder is a double-headed cylinder, the cylinder body of the suction capping cylinder is installed on the capping head mounting plate and is in an up and down direction, a first gas channel is provided in the piston rod of the suction capping cylinder, the suction cup seat and the capping component are both installed at the lower end of the piston rod of the suction capping cylinder, the suction cup is installed on the suction cup seat, a second gas channel is provided in the suction cup seat, the second gas channel connects the cavity of the suction cup with the lower end of the first gas channel, and the capping component is located outside the suction cup.

7. The packaging tube capping device according to claim 6, characterized in that: The capping head mounting plate translation mechanism includes a capping head mounting plate translation cylinder and two guide blocks, the two guide blocks are installed on the lifting seat and are arranged side by side left and right, and the guide blocks are provided with guide grooves parallel to the capping head mounting plate translation cylinder; a transverse connecting strip and two guide strips are provided on the capping head mounting plate, the two guide strips are arranged side by side left and right, and the two ends of the transverse connecting strip are respectively connected to the two guide strips; the two guide strips correspond to the two guide grooves one by one, the guide strips are in the corresponding guide grooves and slide in cooperation with the guide grooves; the cylinder body of the capping head mounting plate translation cylinder is installed on the lifting seat in the horizontal direction, and the piston rod of the capping head mounting plate translation cylinder is connected to the transverse connecting strip.

8. The packaging tube capping device according to claim 6, characterized in that: The capping head mounting plate translation mechanism includes a capping head mounting plate translation cylinder and a translation guide rail. The cylinder body of the capping head mounting plate translation cylinder is installed on the lifting seat in the horizontal direction. The piston rod of the capping head mounting plate translation cylinder is connected to the capping head mounting plate. The translation guide rail is installed on the lifting seat and is parallel to the capping head mounting plate translation cylinder. The capping head mounting plate is provided with a slider that slides with the translation guide rail.

9. The packaging tube capping device according to claim 4, characterized in that: The lifting mechanism includes a servo motor, a horizontal shaft, a left crank, a left connecting rod, a right crank, a right connecting rod, a plurality of guide columns and a plurality of guide sleeves; each guide column is fixedly mounted on the frame and runs up and down, each guide sleeve is fixedly mounted on the lifting seat, the number of guide sleeves is the same as that of guide columns and they correspond one to one, the guide sleeves are sleeved on the guide columns and can move up and down along the guide columns; the horizontal shaft is rotatably mounted on the frame and runs left and right, the power output shaft of the servo motor is transmission-connected to the horizontal shaft, one end of the left crank is fixedly connected to the left end of the horizontal shaft, the other end of the left crank is hinged to the upper end of the left connecting rod, the lower end of the left connecting rod is hinged to the lifting seat, one end of the right crank is fixedly connected to the right end of the horizontal shaft, the other end of the right crank is hinged to the upper end of the right connecting rod, and the lower end of the right connecting rod is hinged to the lifting seat.

10. The packaging tube capping device according to claim 4, characterized in that: The lifting mechanism includes a servo motor, a horizontal rotating shaft, a crank, a connecting rod, a plurality of guide columns and a plurality of guide sleeves; each guide column is fixedly mounted on the frame and extends up and down, each guide sleeve is fixedly mounted on the lifting seat, the number of guide sleeves is the same as that of guide columns and they correspond one to one, the guide sleeves are sleeved on the guide columns and can move up and down along the guide columns; the horizontal rotating shaft is rotatably mounted on the frame and extends left and right, the power output shaft of the servo motor is transmission-connected to the horizontal rotating shaft, one end of the crank is connected to the horizontal rotating shaft, the other end of the crank is hinged to the upper end of the connecting rod, and the lower end of the connecting rod is hinged to the lifting seat.

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