Packaging bag folding and sealing method

Abstract

A kind of packing bag folding and sealing method, using the cooperation of oblique fork telescopic mechanism, clamping plate lifting and rotating mechanism and folding plate mechanism realizes the multiple folding of packing paper bag.Folding plate mechanism is used to realize the third folding of packing bag, and folding plate is rotated by rotary motor, and the rotation angle of folding plate is 180 ° each time.The previous process of the method is filling process, and after packing bag is filled by filling device, it is moved to the working area of packing bag folding and sealing device by mechanical hand clamp, and packing paper bag is clamped by mechanical hand clamp.The working mode of mechanical folding and sealing is used to replace the working mode of manual folding, especially for packing paper bag or other packing bags that are not easy to heat plastic seal, it has high popularization value, and sealing efficiency is significantly improved.

Description

[0001] The application is a divisional application of "Packaging bag folding and sealing device and method" (Application No. 2022106537363; Filing Date: June 10, 2022; Priority Date: June 2, 2022). TECHNICAL FIELD

[0002] The application belongs to the technical field of gauze sheet packaging, and particularly relates to a packaging bag folding and sealing method. BACKGROUND

[0003] Gauze sheets are widely used in the medical field. At present, the packaging of gauze sheets is mainly realized by manual bagging, and there is a lack of automatic bagging and packaging system. Chinese patent document CN 207595390 U discloses a paper bag packaging machine for packaging medical gauze. The patent technology can only realize the pushing of a stack of gauze sheets, but cannot realize the folding and sealing operation of the packaging bag.

[0004] At the present stage, the sealing of the packaging bag is mostly by thermoplastic forming. This scheme is only suitable for plastic packaging bags or packaging bags that can be thermoplastically formed, but cannot seal the paper packaging bag. Therefore, at present, the sealing is realized by manual folding, which is low in efficiency. SUMMARY

[0005] In view of the technical problems existing in the background art, the packaging bag folding and sealing method provided by the application adopts a mechanical folding and sealing working mode to replace the manual folding working mode. Especially for paper packaging bags or other packaging bags that are not easy to be thermoplastically sealed, the method has high popularization value and significantly improves the sealing efficiency.

[0006] In order to solve the above technical problems, the application adopts the following technical scheme to realize it:

[0007] A packaging bag folding and sealing method adopts a folding and sealing device, which comprises a bevel fork telescopic mechanism, a clamping plate lifting and rotating mechanism, a folding plate mechanism, a baffle anti-falling mechanism and a positioning plate mechanism. The folding and sealing steps are as follows:

[0008] S1: The bevel fork of the bevel fork telescopic mechanism is inserted into the inside of the opening of the packaging bag at an angle, and the oblique line where the bevel fork is located is the first folding line. The baffle anti-falling mechanism is actuated, and the baffle of the baffle anti-falling mechanism is extended into the packaging bag. The baffle is used to prevent the materials in the packaging bag from falling off;

[0009] S2: The lifting mechanism in the clamping plate lifting and rotating mechanism drives the double-clamping-plate clamp to move upward, and the double-clamping-plate clamp drives the packaging bag to fold during the upward movement. The double-clamping-plate clamp cooperates with the bevel fork to complete the first folding of the opening of the packaging bag;

[0010] S3: The baffle anti-falling mechanism is reset, and the baffle is retracted;

[0011] S4: the inclined fork retracting mechanism resets, and the inclined fork retracts;

[0012] S5: the double-clamp clamp acts to clamp the first folded part of the packaging bag;

[0013] S6: the rotating mechanism in the clamp-lifting rotating mechanism acts, the clamps in the double-clamp clamp present a triangular structure, the inclined side of the triangle is the reference side for the second folding, and the double-clamp clamp drives the packaging bag to be folded for the second time;

[0014] S7: the positioning plate of the positioning plate mechanism presses the packaging bag folded for the second time;

[0015] S8: the clamp-lifting rotating mechanism resets, the double-clamp clamp descends and is separated from the packaging bag, and the clamp-lifting rotating mechanism returns to the state in the S1 step;

[0016] S9: the turning-over plate in the turning-over plate mechanism rotates to drive the protruding part folded for the second time to be folded, and the third folding of the packaging bag is completed; wherein the side edge of the positioning plate of the positioning plate mechanism is the reference side for the third folding;

[0017] S10: the turning-over plate mechanism resets, and the opening end of the packaging bag is completely folded;

[0018] S11: the sealing treatment is performed by using a labeling machine or a rubberizing machine.

[0019] Preferably, the inclined fork is driven to move by a driving mechanism; the clamp-lifting rotating mechanism comprises two groups of double-clamp clamps, each group of double-clamp clamps is jointly driven by a lifting mechanism and a rotating mechanism; the two groups of double-clamp clamps cooperate with the inclined fork; the turning-over plate mechanism comprises a turning-over plate which can be turned over.

[0020] Preferably, the inclined fork comprises two parallel rods, the diameter of the rods is smaller than the maximum movable gap of the double-clamp clamp; the inclined fork is used for being obliquely inserted into the inner side of the packaging bag, the double-clamp clamp is driven to move upward by the lifting mechanism, and the double-clamp clamp cooperates with the inclined fork to fold the opening of the packaging bag for the first time; the inclined fork is used for providing the reference side for the first folding.

[0021] Preferably, when the inclined fork retracts, the double-clamp clamp is used for clamping the packaging bag and driving the packaging bag to be folded for the second time by the rotating mechanism.

[0022] Preferably, the top of the two clamps of the double-clamp clamp presents a triangular structure, and the inclined side of the triangle is the reference side for the second folding.

[0023] Preferably, the positioning plate mechanism is provided with a movable positioning plate, the positioning plate is oppositely arranged with the clamp-lifting rotating mechanism, and the positioning plate is used for cooperating with the turning-over plate mechanism to fold the packaging bag for the third time.

[0024] Preferably, the positioning plate of the positioning plate mechanism is jointly acted by the vertical driving cylinder and the transverse driving cylinder.

[0025] The patent can achieve the following beneficial effects:

[0026] The inclined fork telescopic mechanism, the clamping plate lifting and rotating mechanism, the folding plate mechanism and the positioning plate mechanism in the application cooperate with each other to perform three times of folding treatment on the packaging bag, and finally, the third folded part is pasted by using a labeling machine or a rubber sticking machine, so that the folding and sealing operation of the packaging bag is realized. The above operation replaces the manual folding work mode, especially for packaging paper bags or other packaging bags that are not easy to be heat sealed, has high popularization value, and significantly improves the sealing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] The application will be further described below in combination with the drawings and examples:

[0028] Figure 1 is a folding principle diagram of the application Figure 1 ;

[0029] Figure 2 is Figure 1 a right view effect diagram based on the above;

[0030] Figure 3 is a folding principle diagram of the application Figure 2 ;

[0031] Figure 4 is a folding principle diagram of the application Figure 3 ;

[0032] Figure 5 is a folding principle diagram of the application Figure 4 ;

[0033] Figure 6 is a folding principle diagram of the application Figure 5 ;

[0034] Figure 7 is a folding principle diagram of the application Figure 6 ;

[0035] Figure 8 is a folding principle diagram of the application Figure 7 ;

[0036] Figure 9 is a folding principle diagram of the application Figure 8 ;

[0037] Figure 10 is a folding principle diagram of the application Figure 9 ;

[0038] Figure 11 is a folding principle diagram of the applicationFigure 10 ;

[0039] Figure 12 Folding principle diagram for the present application Figure 10 One;

[0040] Figure 13 Folding principle diagram for the present application Figure 10 Two.

[0041] Figure 14 Installation effect diagram for the present application Figure 1 ;

[0042] Figure 15 Installation effect diagram for the present application Figure 2 ;

[0043] Figure 16 Installation effect diagram for the present application Figure 3 ;

[0044] Figure 17 Installation effect diagram for the present application

[0045] In the figure: diagonal fork telescopic mechanism 401, diagonal fork 401.1, clamping plate lifting and rotating mechanism 402, double clamping piece clamp 402.1, folding plate mechanism 403, baffle anti-off mechanism 404, positioning plate mechanism 405, packaging bag 5, mechanical hand clamp 6, label 7. DETAILED DESCRIPTION

[0046] The preferred scheme is shown in Figures 1 to 17 A packaging bag folding and sealing method, which adopts a folding and sealing device, the folding and sealing device includes a diagonal fork telescopic mechanism 401, a clamping plate lifting and rotating mechanism 402, and a folding plate mechanism 403. The diagonal fork telescopic mechanism 401 includes an obliquely arranged diagonal fork 401.1, which is driven to move by a driving mechanism. The clamping plate lifting and rotating mechanism 402 includes two groups of double clamping piece clamps 402.1, each of which is driven by a lifting mechanism and a rotating mechanism. The double clamping piece clamp 402.1 cooperates with the diagonal fork 401.1. The folding plate mechanism 403 includes a reversible folding plate.

[0047] The packaging bag 5 in the embodiment is a packaging paper bag, and the unfolded shape is a cuboid structure. The packaging paper bag is filled with gauze pieces. After the gauze pieces are filled into the bag, the opening needs to be sealed. The present application realizes multiple folding of the packaging paper bag by cooperation of the oblique fork telescopic mechanism 401, the clamping plate lifting and rotating mechanism 402 and the folding plate mechanism 403. The folding plate mechanism 403 is used to realize the third folding of the packaging bag. The folding plate is driven to rotate by a rotating motor, and the rotating angle of the folding plate is 180° each time. The previous process of the packaging bag folding and sealing method is the filling process. After the packaging bag is filled by the filling device, the packaging bag is moved to the working area of the packaging bag folding and sealing device by the mechanical hand clamp. As shown in Figure 1

[0048] Further, the oblique fork 401.1 includes two parallel rods, and the diameter of the rods is smaller than the maximum movable gap of the double-clamping-plate clamp 402.1. The oblique fork 401.1 is used to be obliquely inserted into the inner side of the packaging bag. The double-clamping-plate clamp 402.1 is driven to move upward by the lifting mechanism. The double-clamping-plate clamp 402.1 cooperates with the oblique fork 401.1 to fold the opening of the packaging bag for the first time. The oblique fork 401.1 is used to provide a reference edge for the first folding.

[0049] During the upward movement of the double-clamping-plate clamp 402.1, the packaging paper bag is folded. Since the oblique fork 401.1 provides a folding reference edge, the packaging paper bag is folded along the straight line where the oblique fork 401.1 is located for the first time.

[0050] Further, the blocking plate anti-falling mechanism 404 is further included. The blocking plate anti-falling mechanism 404 includes a blocking plate, and the blocking plate is driven to move by a gas cylinder.

[0051] The blocking plate is used to separate the gauze pieces and prevent the gauze pieces from falling out of the packaging paper bag. After the first folding of the packaging paper bag, the blocking plate of the blocking plate anti-falling mechanism 404 can be retracted. The blocking plate anti-falling mechanism 404 is a preferred scheme, and the purpose is to prevent the gauze pieces from falling. If the gauze pieces are filled relatively densely, the blocking plate anti-falling mechanism 404 can be omitted.

[0052] Further, the double-clamping-plate clamp 402.1 is an electric clamp or a pneumatic clamp. After the oblique fork 401.1 is retracted, the double-clamping-plate clamp 402.1 is used to clamp the packaging bag and fold the packaging bag for the second time by the rotating mechanism.

[0053] The double-clamping-plate clamp 402.1 in the present application is an electric clamp or a pneumatic clamp with adjustable gap. The two clamping plates in the double-clamping-plate clamp 402.1 are used to clamp the packaging paper bag and flip the packaging paper bag.

[0054] ​Further, the top of the two clamps of the double-clamp clamp 402.1 is in a triangular structure, and the hypotenuse of the triangle is the reference edge of the second folding.

[0055] The double-clamp clamp 402.1 is an important functional component of the application, and the lifting and rotating functions of the double-clamp clamp 402.1 can be achieved by using the existing mechanical hand, and the clamping function of the double-clamp clamp 402.1 is the same as that of the existing electric or pneumatic clamp; the difference of the double-clamp clamp 402.1 lies in that the clamping component is a triangular clamp structure, and the hypotenuse of the triangle is designed according to the size of the packaging bag.

[0056] Further, the positioning plate mechanism 405 is further provided, and the positioning plate mechanism 405 is provided with a movable positioning plate, the positioning plate is arranged opposite to the clamp plate lifting and rotating mechanism 402, and the positioning plate is used for cooperating with the folding plate mechanism 403 to perform the third folding on the packaging bag.

[0057] The width of the positioning plate is determined according to the width of the packaging bag, and the function of the positioning plate lies in that: first, the positioning plate presses the first two folded parts; second, the side edge of the positioning plate provides a reference edge for the third folding.

[0058] Further, the positioning plate of the positioning plate mechanism 405 is jointly acted by the vertical driving air cylinder and the horizontal driving air cylinder.

[0059] The positioning plate mechanism 405 can be arranged on the mechanical hand clamp 6 and moves together with the mechanical hand clamp 6, and the folding plate mechanism 403 in the application can be separately arranged beside the oblique fork telescopic mechanism 401, when the first two foldings are completed, the mechanical hand clamp 6 drives the packaging bag to move to the working area of the folding plate mechanism 403, the folding plate mechanism 403 is actuated to complete the third folding, and the positioning plate mechanism 405 is reset.

[0060] Preferably, the packaging bag folding and sealing method comprises the following steps:

[0061] S1: The oblique fork telescopic mechanism 401 is actuated to make the oblique fork 401.1 tilt and be inserted into the inner side of the opening of the packaging bag, and the oblique line where the oblique fork 401.1 is located is the first folding line; the baffle anti-falling mechanism 404 is actuated to make the baffle extend into the packaging bag, and the baffle is used for preventing the materials in the packaging bag from falling off;

[0062] S2: The clamp plate lifting and rotating mechanism 402 is actuated, the lifting mechanism in the clamp plate lifting and rotating mechanism 402 drives the double-clamp clamp 402.1 to move upward, the double-clamp clamp 402.1 drives the packaging bag to fold during the upward movement, and the double-clamp clamp 402.1 cooperates with the oblique fork 401.1 to complete the first folding of the opening of the packaging bag;

[0063] S3: The baffle anti-falling mechanism 404 is reset, and the baffle is retracted;

[0064] S4: the oblique fork telescopic mechanism 401 resets, and the oblique fork 401.1 is retracted;

[0065] S5: the double-clamping-plate clamp 402.1 clamps the first folded part of the packaging bag;

[0066] S6: the rotating mechanism in the clamping-plate lifting and rotating mechanism 402 operates, the clamping plates in the double-clamping-plate clamp 402.1 form a triangular structure, the oblique side of the triangle is the reference side for the second folding, and the double-clamping-plate clamp 402.1 drives the packaging bag to be folded for the second time;

[0067] S7: the positioning plate mechanism 405 operates, and the positioning plate of the positioning plate mechanism 405 presses the packaging bag folded for the second time;

[0068] S8: the clamping-plate lifting and rotating mechanism 402 resets, the double-clamping-plate clamp 402.1 descends and separates from the packaging bag, and the clamping-plate lifting and rotating mechanism 402 returns to the state in the S1 step;

[0069] S9: the folding plate mechanism 403 operates, the folding plate in the folding plate mechanism 403 rotates to drive the protruding part of the packaging bag folded for the second time to be folded, and the third folding of the packaging bag is completed; wherein the side of the positioning plate of the positioning plate mechanism 405 is the reference side for the third folding.

[0070] S10: the folding plate mechanism 403 resets, and the opening end of the packaging bag is folded;

[0071] S11: a sealing machine or a rubberizing machine is used to seal.

[0072] The above embodiment is only a preferred technical solution of the present application, and should not be regarded as a limitation of the present application. The protection scope of the present application should be the technical solution recited in the claims, and the equivalent replacement solution of the technical features recited in the claims is the protection scope. That is, the equivalent replacement improvement within this range is also within the protection scope of the present application.

Claims

1. A method of folding and sealing a package bag, characterized by: The folding sealing device comprises a bevel fork telescopic mechanism (401), a clamping plate lifting and rotating mechanism (402), a folding plate mechanism (403), a baffle anti-dropping mechanism (404) and a positioning plate mechanism (405); the folding sealing steps are as follows: S1: the bevel fork (401.1) of the bevel fork telescopic mechanism (401) is obliquely inserted into the inner side of the opening of the packaging bag, and the oblique line where the bevel fork (401.1) is located is the first folding line; the baffle anti-dropping mechanism (404) is actuated, so that the baffle of the baffle anti-dropping mechanism (404) extends into the packaging bag, and the baffle is used for preventing the materials in the packaging bag from falling off; S2: the lifting mechanism in the clamping plate lifting and rotating mechanism (402) drives the double-clamp clamp (402.1) to move upward, the double-clamp clamp (402.1) drives the packaging bag to fold during the upward movement, and the double-clamp clamp (402.1) cooperates with the bevel fork (401.1) to complete the first folding of the opening of the packaging bag; S3: the baffle anti-dropping mechanism (404) is reset, and the baffle is retracted; S4: the bevel fork telescopic mechanism (401) is reset, and the bevel fork (401.1) is retracted; S5: the double-clamp clamp (402.1) is actuated to clamp the first folded part of the packaging bag; S6: the rotating mechanism in the clamping plate lifting and rotating mechanism (402) is actuated, the clamping piece in the double-clamp clamp (402.1) is in a triangular structure, the oblique side of the triangle is the reference side for the second folding, and the double-clamp clamp (402.1) drives the packaging bag to be folded for the second time; S7: the positioning plate of the positioning plate mechanism (405) is used to press the packaging bag folded for the second time; S8: the clamping plate lifting and rotating mechanism (402) is reset, the double-clamp clamp (402.1) is lowered and separated from the packaging bag, and the clamping plate lifting and rotating mechanism (402) returns to the state in the S1 step; S9: the folding plate in the folding plate mechanism (403) is rotated to drive the protruding part of the packaging bag folded for the second time to be folded, so that the third folding of the packaging bag is completed; wherein the side edge of the positioning plate of the positioning plate mechanism (405) is the reference side for the third folding; S10: the folding plate mechanism (403) is reset, and the opening end of the packaging bag is completely folded; S11: a labeling machine or a rubberizing machine is used for sealing treatment.

2. The method of folding and sealing a package according to claim 1, wherein: The bevel fork (401.1) is driven to move by a driving mechanism; the clamping plate lifting and rotating mechanism (402) comprises two groups of double-clamp clamps (402.1), each group of double-clamp clamps (402.1) is driven by a lifting mechanism and a rotating mechanism; the two groups of double-clamp clamps (402.1) cooperate with the bevel fork (401.1); the folding plate mechanism (403) comprises a foldable folding plate.

3. The method of folding and sealing a package according to claim 2, wherein: The bevel fork (401.1) comprises two parallel rods, the diameter of the rod is smaller than the maximum movable gap of the double-clamp clamp (402.1); the bevel fork (401.1) is used for being obliquely inserted into the inner side of the packaging bag, the double-clamp clamp (402.1) is driven upward by the lifting mechanism, the double-clamp clamp (402.1) cooperates with the bevel fork (401.1) and is used for folding the opening of the packaging bag for the first time; the bevel fork (401.1) is used for providing a reference side for the first folding.

4. The method of folding and sealing a package according to claim 2, wherein: When the prongs (401.1) are retracted, the double-clip clamp (402.1) is used to clamp the packaging bag and drive the packaging bag to perform the second folding through a rotating mechanism.

5. The method of folding and sealing a package according to claim 4, wherein: The top of the two clips of the double-clip clamp (402.1) is in a triangular structure, and the oblique side of the triangle is the reference side of the second folding.

6. The method of folding and sealing a package according to claim 5, wherein: The positioning plate mechanism (405) is provided with a movable positioning plate, which is arranged opposite to the clamp plate lifting and rotating mechanism (402), and is used to cooperate with the folding plate mechanism (403) to perform the third folding on the packaging bag.

7. The method of folding and sealing a package according to claim 6, wherein: The positioning plate of the positioning plate mechanism (405) is jointly acted by a vertical driving cylinder and a horizontal driving cylinder.

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