Bag opening inward folding device of paper bag opening wrapping machine

Abstract

The utility model belongs to the field of paper bag opening wrapping machine equipment, and relates to a bag opening inward folding device of a paper bag opening wrapping machine, which comprises a fixed support, the fixed support is provided with two auxiliary plates, two inserting plates, two pressing plates, an auxiliary plate driving mechanism, an inserting plate driving mechanism and a pressing plate driving mechanism, and the auxiliary plate driving mechanism, the inserting plate driving mechanism and the pressing plate driving mechanism respectively drive the auxiliary plates, the inserting plates and the pressing plates to move; the auxiliary plate comprises an outer pushing surface, an upper hooking surface, an inner pushing surface and a lower pressing surface; the device has the advantages that bag opening inward folding can be mechanically and automatically completed, the production efficiency is improved, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of paper bag mouth-wrapping machine equipment and relates to a bag mouth inner folding device of the paper bag mouth-wrapping machine. Background Art

[0002] Paper bags are mainly used for packaging clothing and gift boxes. Due to the large market demand, they need to gradually change from manual production to mechanized and automated forming. Due to the complex procedure of folding the bag mouth, the folding process is still done manually in the traditional production process, which results in high labor costs and low production efficiency. Summary of the invention

[0003] In view of the above problems, the utility model provides a bag mouth inner folding device for a paper bag wrapping machine, which has the advantages of being able to mechanically and automatically complete the bag mouth inner folding, improving production efficiency and reducing labor costs.

[0004] The purpose of the utility model is achieved in this way:

[0005] A bag mouth inner folding device of a paper bag mouth wrapping machine comprises a fixed bracket, on which are arranged two auxiliary plates, two plug plates and two pressing plates, and an auxiliary plate driving mechanism, a plug plate driving mechanism and a pressing plate driving mechanism for driving the auxiliary plates, the plug plates and the pressing plates to move respectively;

[0006] The auxiliary plate driving mechanism includes auxiliary plate up and down power and auxiliary plate left and right power;

[0007] The plugboard driving mechanism includes a plugboard up and down power arranged above the bag opening, and the driving end of the plugboard up and down power is connected to the plugboard;

[0008] The pressing plate driving mechanism comprises a pressing plate front and rear power fixed on a fixed bracket, and the driving end of the pressing plate front and rear power is connected with the pressing plate.

[0009] The auxiliary plate comprises an outward pushing surface, an upper hook surface, an inner pushing surface and a downward pressing surface.

[0010] The left and right power of the auxiliary plate includes left and right motors of the auxiliary plate and synchronous belts driven by the left and right motors of the auxiliary plate. The synchronous belt is horizontally transmitted. Two synchronous belt connecting plates are fixed on the synchronous belt. The two synchronous belt connecting plates are respectively arranged on the front and back sides of the synchronous belt. The auxiliary plate is fixedly connected to the connecting plate.

[0011] The upper and lower power of the auxiliary plate is fixed on the fixed bracket, the driving end of the upper and lower power of the auxiliary plate is connected with the left and right power of the auxiliary plate, and the driving end of the left and right power of the auxiliary plate is connected to the auxiliary plate.

[0012] The left and right power of the auxiliary plate includes left and right motors of the auxiliary plate and synchronous belts driven by the left and right motors of the auxiliary plate. The synchronous belt is horizontally transmitted. Two synchronous belt connecting plates are fixed on the synchronous belt. The two synchronous belt connecting plates are respectively arranged on the front and back sides of the synchronous belt. The auxiliary plate is fixedly connected to the connecting plate.

[0013] The driving end of the upper and lower power of the auxiliary plate is connected to a synchronous belt fixing plate, the left and right motors of the auxiliary plate are fixed on the left and right ends of the synchronous belt fixing plate, the output ends of the left and right motors of the auxiliary plate are connected to a driving wheel, and the other end of the synchronous belt fixing plate is connected to a driven wheel, and a synchronous belt is provided between the driving wheel and the driven wheel.

[0014] A guide rail fixing plate is fixed to the lower end of the synchronous belt fixing plate, a guide rail is fixed to the lower end of the guide rail fixing plate, a slider is slidably arranged on the guide rail, a slider plate is fixed on the slider, the slider plate is fixedly connected to the synchronous belt connecting plate, and the auxiliary plate is fixed to the lower end of the slider plate.

[0015] The up-and-down power of the plug plate is fixed on the slider plate, and the driving end of the up-and-down power of the plug plate extends downward and is connected with the plug plate.

[0016] The plug-in board driving mechanism also includes two plug-in board left and right cylinders fixed on the frame, and the two plug-in board left and right cylinders independently drive the corresponding plug-in board to move.

[0017] The inserting plate comprises two inserting parts, and the widths of both sides of the two inserting parts correspond to the widths of the bag opening after it is opened.

[0018] An inclined surface is formed on the outer side of the lower end of the insertion portion.

[0019] The two insertion parts are arranged at a 90 degree angle.

[0020] The driving ends of the front and rear power of the pressing plate are fixed with a cylinder plate, the upper and lower cylinders of the pressing plate are fixed on the cylinder plate, and the driving ends of the upper and lower cylinders of the pressing plate are fixed with the pressing plate.

[0021] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects: through the auxiliary plate, the plug plate and the pressing plate, as well as the setting of the corresponding driving mechanism, after the auxiliary plate turns the side surface of the bag opening outward, the pressing plate enters to turn the front and back sides of the bag opening inward by 90 degrees, and then the auxiliary plate moves to the outside of the side surface of the bag opening to hook the side surface of the bag opening upward and fold the side surface of the bag opening inward, and then the pressing plate retracts and the plug plate is inserted, and the front, back and two side surfaces of the bag opening folded inward are folded downward, thereby completing the automated production of the bag opening inward folding, improving production efficiency and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the inner folding device.

[0024] Figure 2 This is a schematic diagram of the structure after the fixing bracket of the inner folding device is hidden.

[0025] Figure 3 This is one of the structural schematic diagrams of the auxiliary board, the plug board and its driving device.

[0026] Figure 4 This is the second structural schematic diagram of the auxiliary board, the plug board and its driving device.

[0027] Figure 5 This is one of the structural diagrams of the auxiliary board and the plug board.

[0028] Figure 6 This is the second structural diagram of the auxiliary board and the plug board.

[0029] Figure 7 This is a schematic diagram of the structure of the paper bag after it is unfolded.

[0030] Figure 8 It is a schematic diagram of the structure when the paper bag is folded inwardly and the air suction device is extended.

[0031] Fig. 9 Schematic diagram of the structure in which the auxiliary plate extends into the bag opening after the suction device unfolds the paper bag (a set of pressing plates and pressing plate driving device are hidden).

[0032] Fig.10 A schematic diagram of the structure when the auxiliary plate turns the side of the bag opening outward, and the pressing plate turns the front and back of the bag opening inward (a set of pressing plates, pressing plate driving devices and suction devices are hidden).

[0033] Fig.11 Schematic diagram of the structure when the auxiliary plate turns the side of the bag opening inward (a set of pressing plates, pressing plate driving device and suction device are hidden).

[0034] Fig.12 Schematic diagram of the structure when the pressing plate is retracted and the insert plate is inserted downward to turn down the sides and the front and back of the bag opening (a set of pressing plates, pressing plate driving devices and suction devices are hidden).

[0035] Fig.13 This is a schematic diagram of the structure when the plug plate and the auxiliary plate are retracted and the suction device is closed.

[0036] 1-Fix the bracket;

[0037] 2- auxiliary plate; 21- auxiliary plate upper and lower cylinders; 22- auxiliary plate left and right motors; 23- synchronous belt fixing plate; 24- synchronous belt; 25- synchronous belt connecting plate; 26- guide rail fixing plate; 27- guide rail; 28- slider; 29- slider plate; 211- guide plate; 212- guide block; 213- guide column;

[0038] 201-external push surface; 202-upper hook surface; 203-inner push surface; 204-lower pressure surface;

[0039] 3-insert plate; 31-upper and lower cylinders of the insert plate; 32-insertion part; 33-inclined surface;

[0040] 4-pressing plate; 41-pressing plate front and rear cylinders; 42-cylinder plate; 43-pressing plate upper and lower cylinders;

[0041] 100-paper bag; 101-side of the bag opening; 102-front and back of the bag opening; 103-crease line; 104-front and back of the paper bag; 105-glue spraying; 200-vacuum device DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0043] The left-right direction described in the present invention corresponds to the side surface 101 of the paper bag, and the front-back direction corresponds to the front and back surfaces 102 of the paper bag.

[0044] A bag mouth inner folding device of a paper bag mouth wrapping machine comprises a fixed bracket 1, on which are arranged two auxiliary plates 2, two plug plates 3 and two pressing plates 4, and an auxiliary plate driving mechanism, a plug plate driving mechanism and a pressing plate driving mechanism for driving the auxiliary plates 2, the plug plates 3 and the pressing plates 4 to move respectively;

[0045] The auxiliary plate driving mechanism includes an auxiliary plate upper and lower cylinder 21 and an auxiliary plate left and right motor 22. The auxiliary plate upper and lower cylinder 21 is fixed on the fixed bracket 1, and the driving end of the auxiliary plate upper and lower cylinder 21 is connected to a synchronous belt fixing plate 23;

[0046] The left and right motors 22 of the auxiliary plate are fixed to the left and right ends of the synchronous belt fixing plate 23. The output ends of the left and right motors 22 of the auxiliary plate are connected to driving wheels, and the other end of the synchronous belt fixing plate 23 is connected to a driven wheel. A synchronous belt 24 is arranged between the driving wheel and the driven wheel. The synchronous belt 24 is horizontally driven. Two synchronous belt connecting plates 25 are fixed on the synchronous belt 24. The two synchronous belt connecting plates 25 are respectively arranged on the front and back sides of the synchronous belt 24, so that when the synchronous belt 24 is running, the two synchronous belt connecting plates 25 move toward each other or oppositely, so that the auxiliary plate 2 moves away from or approaches at the same time. In this way, the left and right movements of the two auxiliary plates 2 and the plug plate 3 are more simultaneous, more consistent, and more accurate.

[0047] A guide rail fixing plate 26 is fixed to the lower end of the synchronous belt fixing plate 23, a guide rail 27 is fixed to the lower end of the guide rail fixing plate 26, a slider 28 is slidably provided on the guide rail 27, a slider plate 29 is fixed on the slider 28, the slider plate 29 is fixedly connected to the synchronous belt connecting plate 25, the auxiliary plate 2 is fixed to the lower end of the slider plate 29, and the auxiliary plate 2 is "L"-shaped and includes an outward push surface 201, an upper hook surface 202, an inner push surface 203 and a downward pressure surface 204.

[0048] The synchronous belt fixing plate 23 is also connected to a guide plate 211, and guide blocks 212 are fixed on both sides of the guide plate 211. Guide columns 213 matching the guide blocks 212 are arranged on the fixed brackets 1 on both sides. Through the action of the guide blocks and guide columns, the synchronous belt fixing plate 23 can move up and down more stably, which indirectly makes the auxiliary plate 2 move up and down more stably.

[0049] The plug plate driving mechanism includes a plug plate upper and lower cylinder 31, which is fixed on the slider plate 29 and shares a set of left and right power with the auxiliary plate 2. The driving end of the plug plate upper and lower cylinder 31 extends downward and is connected to the plug plate 3. The plug plate 3 includes two insertion parts 32, and the width of both sides of the two insertion parts 32 corresponds to the width of the bag mouth after it is opened.

[0050] The outer width of the two insertion parts 32 of the plug board is slightly smaller than the inner width of the bag opening after the bag opening is opened by the suction device. For example, after the bag opening is opened, the inner width of the bag opening is 20 cm, and the outer width of the two insertion parts is 19.5 cm.

[0051] The inserting plate 3 can be of various shapes. The most important thing is that the outer width of the two inserting parts needs to match the inner width of the bag opening after opening.

[0052] An inclined surface 33 is formed on the outer side of the lower end of the insertion portion 32 .

[0053] The two insertion portions 32 are arranged at an angle of 90 degrees.

[0054] The pressing plate driving mechanism includes a pressing plate front and rear cylinders 41 fixed on the fixed bracket 1, a cylinder plate 42 is fixed to the driving end of the pressing plate front and rear cylinders 41, a pressing plate upper and lower cylinders 43 are fixed on the cylinder plate 42, and a pressing plate 4 is fixed to the driving end of the pressing plate upper and lower cylinders 43.

[0055] Working principle:

[0056] 1. Before the paper bag 100 reaches the inner folding device, first spray glue on the inside of the front and back sides of the bag opening, and spray glue below the crease line 103 on the side of the bag opening;

[0057] 2. The suction device 200 sucks the front and back sides 104 of the paper bag to open the bag opening;

[0058] 3. The two auxiliary plates 2 move down into the bag opening, and then the two auxiliary plates 2 move away from each other to the sides, and the outward push surfaces 201 of the auxiliary plates 2 turn the side surfaces 101 of the bag opening outward;

[0059] 4. The two pressing plates 4 move closer to each other to fold the front and back sides 102 of the bag opening inwards, and then move downwards to the position of the bag opening crease line 103 to fold the front and back sides 102 of the bag opening inwards by 90°;

[0060] 5. The two auxiliary plates 2 continue to move away until they leave the range of the side surface 101 of the bag opening, and then the two auxiliary plates 2 move downward and move closer to each other to the bottom of the side surface of the bag opening, and then the two auxiliary plates 2 move upward to the position where the lower pressure surface 204 is higher than the crease line 103, and the upper hook surfaces 202 of the two auxiliary plates 2 drive the side surface 101 of the bag opening to turn upward, and then the two auxiliary plates 2 approach each other, and the inner pushing surface 203 of the auxiliary plate makes the side surface of the bag opening turn inward 90° to above the front and back surfaces 102 of the bag opening, and the lower pressure surface 204 of the auxiliary plate presses above the side surface 101 of the bag opening, and at this time, the front, back and both sides of the bag opening are in an inverted state;

[0061] 6. After the side surface 101 of the bag opening is folded inwards to the top of the front and back surfaces 102 of the bag opening, the front and back surfaces 102 of the bag opening are partially pressed, and at this time, the two pressing plates 4 move away from each other and retract; then the two inserting plates 3 are inserted downwards, so that the two side surfaces, the front and the back surfaces in the bag opening are all folded downwards; then the two inserting plates 3 move away from each other to the side edges of the bag opening, so that the two side surfaces, the front and the back surfaces of the bag opening are all folded in place, and a certain squeezing and shaping effect is achieved on the corners;

[0062] 7. The insert plate 3 and the auxiliary plate 2 are both returned to their original positions, and the suction device 200 is closed to squeeze and shape the bag opening, and the two side surfaces, the front and the back are bonded with the spray glue, thereby completing the inward shaping of the bag opening.

[0063] Embodiment 2. This embodiment is basically the same as the embodiment 2, except that the left and right power of the plug board is the left and right cylinders of the plug board fixed on the bracket. In this implementation mode, the working principle is the same as that of embodiment 1, except that the plug board and the auxiliary board use their own independent left and right driving power respectively. The advantage of this is that the operating procedure can be simplified when a set of left and right power is shared. The disadvantage is that the cost is relatively high.

[0064] Embodiment 3. This embodiment is basically the same as the embodiment, except that: the upper and lower cylinders of the plug plate are fixed on the bracket, and the plug plate corresponds to the side of the bag opening. When the two sides and the front and back of the bag opening are folded inward 90° into the bag opening, the upper and lower cylinders of the plug plate control the plug plate to insert downward, so that the two sides, the front and the back of the bag opening are folded down, and then directly move up to reset, and the suction device is closed to squeeze and shape the bag opening, and the two sides, the front and the back are bonded with the spray glue, so as to complete the inward shaping of the bag opening. This implementation method lacks the action of the two groups of plug plates moving away from each other to the side of the bag opening, so the position of the plug plates is more precise, but as long as the previous accuracy is achieved, this implementation method is faster and has a simple structure.

[0065] Embodiment 4: This embodiment is basically the same as the embodiment 4, except that: the left and right power of the auxiliary plates can be two cylinders that drive the two auxiliary plates to move left and right respectively.

[0066] Example 5. This example is basically the same as the example, with the difference being that the pressing plate driving mechanism may only have the front and rear cylinders of the pressing plate, but no upward and downward power for the pressing plate. The pressing plate is directly arranged at a position slightly higher than the fold of the bag opening, and the two pressing plates are close to each other so that the front and back sides of the bag opening are folded inward along the fold by nearly 90 degrees. This implementation method also has the advantages of low cost and high efficiency, but the disadvantage is that it has high requirements for the overall working precision.

[0067] The utility model has the characteristics of mechanically and automatically completing the inner folding of the bag mouth, improving production efficiency and reducing labor costs.

[0068] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bag mouth inner folding device of a paper bag mouth wrapping machine, comprising a fixed bracket, characterized in that: The fixed bracket is provided with two auxiliary plates, two plug plates and two pressing plates, and an auxiliary plate driving mechanism, a plug plate driving mechanism and a pressing plate driving mechanism for driving the auxiliary plates, the plug plates and the pressing plates to move respectively; The auxiliary plate driving mechanism includes auxiliary plate up and down power and auxiliary plate left and right power; The plugboard driving mechanism includes a plugboard up and down power arranged above the bag opening, and the driving end of the plugboard up and down power is connected to the plugboard; The pressing plate driving mechanism comprises a pressing plate front and rear power fixed on a fixed bracket, and the driving end of the pressing plate front and rear power is connected with the pressing plate.

2. The bag mouth inner folding device of the paper bag wrapping machine according to claim 1, characterized in that: The auxiliary plate comprises an outward pushing surface, an upper hook surface, an inner pushing surface and a downward pressing surface.

3. The bag mouth inner folding device of the paper bag mouth wrapping machine according to claim 1, characterized in that: The left and right power of the auxiliary plate includes left and right motors of the auxiliary plate and synchronous belts driven by the left and right motors of the auxiliary plate. The synchronous belt is horizontally transmitted. Two synchronous belt connecting plates are fixed on the synchronous belt. The two synchronous belt connecting plates are respectively arranged on the front and back sides of the synchronous belt. The auxiliary plate is fixedly connected to the connecting plate.

4. The bag mouth inner folding device of the paper bag wrapping machine according to claim 1, characterized in that: The left and right power of the auxiliary plate includes left and right motors of the auxiliary plate and synchronous belts driven by the left and right motors of the auxiliary plate. The synchronous belt is horizontally transmitted. Two synchronous belt connecting plates are fixed on the synchronous belt. The two synchronous belt connecting plates are respectively arranged on the front and back sides of the synchronous belt. The auxiliary plate is fixedly connected to the connecting plate.

5. The bag mouth inner folding device of the paper bag mouth wrapping machine according to claim 4, characterized in that: The driving end of the upper and lower power of the auxiliary plate is connected to a synchronous belt fixing plate, the left and right motors of the auxiliary plate are fixed on the left and right ends of the synchronous belt fixing plate, the output ends of the left and right motors of the auxiliary plate are connected to a driving wheel, and the other end of the synchronous belt fixing plate is connected to a driven wheel, and a synchronous belt is provided between the driving wheel and the driven wheel.

6. The bag mouth inner folding device of the paper bag wrapping machine according to claim 5, characterized in that: A guide rail fixing plate is fixed to the lower end of the synchronous belt fixing plate, a guide rail is fixed to the lower end of the guide rail fixing plate, a slider is slidably arranged on the guide rail, a slider plate is fixed on the slider, the slider plate is fixedly connected to the synchronous belt connecting plate, and the auxiliary plate is fixed to the lower end of the slider plate.

7. The bag mouth inner folding device of the paper bag mouth wrapping machine according to claim 5, characterized in that: The up-and-down power of the plug plate is fixed on the slider plate, and the driving end of the up-and-down power of the plug plate extends downward and is connected with the plug plate.

8. The bag mouth inner folding device of a paper bag wrapping machine according to claim 1, characterized in that: The plug-in board driving mechanism also includes two plug-in board left and right cylinders fixed on the frame, and the two plug-in board left and right cylinders independently drive the corresponding plug-in board to move.

9. A bag mouth inner folding device for a paper bag wrapping machine according to any one of claims 1 to 8, characterized in that: The inserting plate comprises two inserting parts, and the widths of both sides of the two inserting parts correspond to the widths of the bag opening after it is opened.

10. The bag mouth inner folding device of the paper bag mouth wrapping machine according to claim 9, characterized in that: An inclined surface is formed on the outer side of the lower end of the insertion portion.

11. The bag mouth inner folding device of the paper bag mouth wrapping machine according to claim 9, characterized in that: The two insertion parts are arranged at a 90 degree angle.

12. The bag mouth inner folding device of the paper bag mouth wrapping machine according to claim 9, characterized in that: The driving ends of the front and rear power of the pressing plate are fixed with a cylinder plate, the upper and lower cylinders of the pressing plate are fixed on the cylinder plate, and the driving ends of the upper and lower cylinders of the pressing plate are fixed with the pressing plate.

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