Indentation device of bag making machine

Abstract

The utility model discloses a creasing device of a bag making machine, which comprises a first creasing mechanism and a second creasing mechanism, and the first creasing mechanism and the second creasing mechanism are arranged on a rack at an interval along the conveying direction of bag body sheets. Wherein the first creasing mechanism comprises a first creasing rotating shaft and a first creasing component fixedly arranged on the first creasing rotating shaft, and the second creasing mechanism comprises a second creasing rotating shaft and a second creasing component fixedly arranged on the second creasing rotating shaft. The first indentation member and the second indentation member extend parallel to each other perpendicular to the conveying direction. By the adoption of the device, two indentations can be sequentially pressed out by the first indentation mechanism and the second indentation mechanism in the conveying process of a bag body sheet material, the distance between the first indentation component and the second indentation component pressed on the bag body sheet material is adjusted by adjusting the first indentation rotating shaft or the second indentation rotating shaft, and therefore the distance between the two indentations is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field related to bag making, in particular to an indentation device of a bag making machine. Background Art

[0002] A bag-making machine is a device used in the prior art to produce packaging bags. During the bag-making process, some packaging bags require indentations to be made on the bag sheet to facilitate subsequent bag folding. For example, some packaging bags require two indentations to facilitate bottom opening. In the prior art, indentations are typically made on the bag sheet by placing an indentation blade on a rotating shaft. As the bag sheet is conveyed, the rotating shaft rotates, driving the indentation blade to create indentations on the bag sheet.

[0003] However, in the prior art, two creasing knives are generally arranged on one rotating shaft. For example, Chinese patent publication number CN223030519U discloses a bag creasing mechanism of a square bottom paper bag machine and a square bottom paper bag machine thereof. By arranging two creasing knives on one creasing rotating shaft, indentations are made on the bag sheet. However, when the specifications of the packaging bags are different, the positions of the indentations to be made are also different. The positions of the two creasing knives can only be adjusted manually, which leads to inconvenience and low efficiency in adjustment. Utility Model Content

[0004] The purpose of the present application is to solve the problems in the prior art of inconvenient adjustment and low adjustment efficiency when adjusting the positions of two creasing knives of a bag making machine.

[0005] To solve the above technical problems, an embodiment of the present application discloses a creasing device for a bag making machine, comprising a first creasing mechanism and a second creasing mechanism, wherein the first creasing mechanism and the second creasing mechanism are arranged at intervals on a frame along the conveying direction of the bag sheet.

[0006] The first indentation mechanism includes a first indentation shaft and a first indentation component fixedly mounted on the first indentation shaft, and the second indentation mechanism includes a second indentation shaft and a second indentation component fixedly mounted on the second indentation shaft. Furthermore, the first indentation component and the second indentation component extend parallel to each other, perpendicular to the conveying direction.

[0007] By adopting the above technical solution, a first indentation mechanism and a second indentation mechanism are arranged at intervals on the frame along the conveying direction of the bag sheet, so that two indentations can be pressed into the bag sheet in sequence by the first indentation mechanism and the second indentation mechanism during the conveying process.

[0008] Specifically, a first indentation component is fixedly mounted on a first indentation shaft, and a second indentation component is fixedly mounted on a second indentation shaft. As the first and second indentation shafts rotate, the first indentation component can indent a first indentation on the bag sheet, and the second indentation component can indent a second indentation on the bag sheet. Furthermore, the first and second indentation components extend parallel to each other, perpendicular to the conveying direction. When the bag sheet passes through the first and second indentation mechanisms in the conveying direction, two parallel indentations with a predetermined interval can be indented on the bag sheet.

[0009] Furthermore, when the distance between the two indentations of the bag sheet needs to be adjusted, the conveying speed of the bag sheet is kept unchanged. For example, the relative angle difference between the first indentation rotating shaft and the second indentation rotating shaft in the rotation direction can be adjusted, and then the distance between the first indentation component and the second indentation component pressing on the bag sheet is adjusted, and finally the distance between the two indentations is adjusted. For example, when two indentations with a predetermined spacing are pressed on a predetermined bag sheet, the bag sheet is conveyed at a predetermined speed, the first indentation rotating shaft and the second indentation rotating shaft rotate, and then two indentations are pressed on the bag sheet. When the first indentation rotating shaft and the second indentation rotating shaft rotate, two indentations are pressed on the bag sheet. When two indentations with a wider spacing need to be embossed on a bag sheet of a certain specification, any one of the indentation shafts can be adjusted. For example, the first indentation shaft rotates first, and then the second indentation shaft starts to rotate after a delay of a predetermined angle. The relative angle difference between the first indentation component and the second indentation component in the rotation direction increases, and then the distance between the first indentation component and the second indentation component pressed on the bag sheet is adjusted, so that the spacing between the two indentations becomes larger. Similarly, when the spacing between the two indentations needs to be reduced, one of the indentation shafts rotates normally, and then the other indentation shaft rotates a predetermined angle in advance.

[0010] The embodiment of the present application further discloses a creasing device for a bag making machine, wherein a first origin positioning component is further provided at one end of the first creasing mechanism, and a second origin positioning component is provided at a corresponding end of the second creasing mechanism.

[0011] The first origin positioning assembly and the second origin positioning assembly respectively determine the initial phases of the first indentation component and the second indentation component relative to the frame.

[0012] By adopting the above technical solution, a first origin positioning component and a second origin positioning component are provided to determine the initial phase of the first indentation component and the second indentation component, so as to more conveniently and accurately monitor the rotation phase or rotation timing of the two indentation shafts.

[0013] An embodiment of the present application also discloses an indentation device for a bag making machine, wherein the first origin positioning assembly includes a first positioning bracket and a first positioning origin, the first positioning bracket is fixedly arranged on the frame, a first sensor is arranged on the first positioning bracket, the first positioning origin is fixedly arranged at one end of the first indentation shaft, and the detection end of the first sensor extends toward the first positioning origin.

[0014] The second origin positioning assembly includes a second positioning bracket and a second positioning origin. The second positioning bracket is fixedly set on the frame. A second sensor is set on the second positioning bracket. The second positioning origin is fixedly set at the corresponding end of the second indentation shaft, and the detection end of the second sensor extends toward the second positioning origin.

[0015] By adopting the above technical solution, the first positioning origin and the second positioning origin can be accurately monitored by setting sensors.

[0016] The embodiment of the present application further discloses a creasing device of a bag making machine, wherein the first creasing mechanism further includes a first auxiliary creasing shaft which is arranged on one side of the first creasing shaft and is transmission-connected to the first creasing shaft.

[0017] The second indentation mechanism also includes a second auxiliary indentation shaft which is arranged on one side of the second indentation shaft and is transmission-connected to the second indentation shaft.

[0018] Furthermore, the bag body sheet passes through the first gap between the first indentation rotating shaft and the first auxiliary indentation rotating shaft, and the second gap between the second indentation rotating shaft and the second auxiliary indentation rotating shaft in sequence.

[0019] By adopting the above technical solution, the bag sheet passes through the first gap between the first indentation shaft and the first auxiliary indentation shaft, and the second gap between the second indentation shaft and the second auxiliary indentation shaft in sequence, and is sequentially pressed out with two indentations with a certain distance by the first indentation component and the second indentation component.

[0020] An embodiment of the present application also discloses a creasing device for a bag making machine, wherein a first creasing component includes a first creasing knife arranged on a first creasing shaft and extending along the axial direction of the first creasing shaft, and a first creasing groove adapted to the first creasing knife is provided on the first auxiliary creasing shaft, wherein the first creasing knife and the first creasing groove are aligned and adapted in a first gap.

[0021] The second indentation component includes a second indentation knife arranged on the second indentation shaft and extending along the axial direction of the second indentation shaft. The second auxiliary indentation shaft is provided with a second indentation groove adapted to the second indentation knife. The second indentation knife and the second indentation groove are aligned and adapted in the second gap.

[0022] Using the above technical solution, the first indentation component is set as a first indentation knife, and the first indentation groove adapted to the first indentation knife is set on the first auxiliary indentation shaft. When the bag sheet is conveyed in the first gap, the first indentation knife and the first indentation groove are aligned and adapted, and then an indentation is pressed on the bag sheet. Similarly, the second indentation knife and the second indentation groove are aligned and adapted in the second gap and also an indentation is pressed on the bag sheet.

[0023] The embodiment of the present application further discloses a creasing device for a bag making machine, wherein a plurality of first mounting discs are axially spaced apart on a first creasing shaft, and a first creasing knife is fixedly arranged on one side of the plurality of first mounting discs.

[0024] A plurality of second mounting discs are arranged on the second indentation shaft at intervals along the axial direction, and the second indentation knife is fixedly arranged on one side of the plurality of second mounting discs.

[0025] By adopting the above technical solution, setting up multiple first mounting plates and second mounting plates can increase the diameter of the first indentation shaft and the second indentation shaft, and there is no need to set up a shaft that is too thick, which can save materials and costs. In addition, setting up the first mounting plate and the second mounting plate can facilitate the installation and replacement of the first indentation knife and the second indentation knife.

[0026] The embodiment of the present application further discloses a creasing device for a bag making machine, wherein the first creasing mechanism further includes a first driver and a first transmission mechanism, and the first driver synchronously drives the first creasing shaft and the first auxiliary creasing shaft through the first transmission mechanism.

[0027] The second indentation mechanism further includes a second driver and a second transmission mechanism. The second driver synchronously drives the second indentation shaft and the second auxiliary indentation shaft through the second transmission mechanism.

[0028] By adopting the above technical solution, the first driver synchronously drives the first indentation shaft and the first auxiliary indentation shaft to rotate through the first transmission mechanism, which has the advantage of high synchronization accuracy.

[0029] An embodiment of the present application also discloses a creasing device for a bag making machine, wherein the first driver is a first servo motor fixed to a frame, and the first transmission mechanism includes a first driving gear arranged at the end of a first auxiliary creasing shaft, and a first driven gear arranged at the corresponding end of the first creasing shaft, and the first driving gear is transmission-connected to the output end of the first servo motor.

[0030] The second driver is a second servo motor fixed on the frame. The second transmission mechanism includes a second driving gear arranged at the end of the second auxiliary indentation shaft, and a second driven gear arranged at the corresponding end of the second indentation shaft. The second driving gear is transmission-connected to the output end of the second servo motor.

[0031] Using the above technical solution, the first driver is set as the first servo motor and the second driver is set as the second servo motor. It is more convenient and the control is more precise when controlling the rotation of the first indentation shaft and the second indentation shaft, and the first servo motor and the second servo motor can automatically adjust the phase after inputting the phase difference parameter.

[0032] An embodiment of the present application also discloses a creasing device for a bag making machine, which also includes a sheet support plate, which extends through the first gap and the second gap along the conveying direction to provide support for the bag sheet, and the first auxiliary creasing shaft and the second auxiliary creasing shaft are at least partially exposed from the sheet support plate.

[0033] In summary, the present application discloses a creasing device for a bag-making machine, in which a first creasing mechanism and a second creasing mechanism are arranged at intervals on a frame along the conveying direction of the bag sheet, wherein the first creasing component and the first creasing shaft in the first creasing mechanism are controlled by a first servo motor, and the second creasing component and the second creasing shaft in the second creasing mechanism are controlled by a second servo motor, with precise control and convenient phase adjustment. The present application uses the first creasing component and the second creasing component to press two indentations on the bag sheet that are parallel to each other and have a predetermined interval, and can further adjust the relative angle difference between the first creasing component and the second creasing component in the rotation direction by adjusting the first servo motor and the second servo motor, thereby adjusting the spacing between the two indentations on the bag sheet. The structure is simple and the control is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A top view of the indentation device of the bag making machine provided in an embodiment of the present utility model;

[0035] Figure 2 A schematic structural diagram of the indentation device of the bag making machine provided by an embodiment of the present invention with the frame removed;

[0036] Figure 3 A side view of one side of a first origin positioning component and a second origin positioning component of an indentation device of a bag making machine provided by an embodiment of the utility model;

[0037] Figure 4 A schematic diagram of the partial structure of the first indentation mechanism and the second indentation mechanism of the indentation device of the bag making machine provided by an embodiment of the utility model;

[0038] Figure 5 A schematic diagram of the partial structure of the first creasing knife of the creasing device of the bag making machine provided in an embodiment of the utility model.

[0039] Description of reference numerals:

[0040] 100. First indentation mechanism;

[0041] 110, first indentation shaft;

[0042] 111. First installation disk;

[0043] 120. First indentation component;

[0044] 121. First indentation knife;

[0045] 130. First origin positioning component;

[0046] 131. First positioning bracket; 132. First positioning origin; 133. First sensor mounting hole;

[0047] 140. First auxiliary indentation shaft;

[0048] 141, first indentation groove;

[0049] 150, first gap;

[0050] 160. First servo motor;

[0051] 170, first transmission mechanism;

[0052] 171. First driving gear; 172. First driven gear;

[0053] 200, second indentation mechanism;

[0054] 210, second indentation shaft;

[0055] 211, second installation disk;

[0056] 220, second indentation component;

[0057] 221, second indentation knife;

[0058] 230. Second origin positioning component;

[0059] 231, second positioning bracket; 232, second positioning origin; 233, second sensor mounting hole;

[0060] 240, second auxiliary indentation shaft;

[0061] 241, second indentation groove;

[0062] 250, second gap;

[0063] 260, second servo motor;

[0064] 270, second transmission mechanism;

[0065] 271, second driving gear; 272, second driven gear;

[0066] 300, rack;

[0067] 400, sheet material support plate;

[0068] A. Conveying direction of bag sheets. DETAILED DESCRIPTION

[0069] As mentioned in the background technology, some packaging bags need to press two indentations on the bag body sheet to facilitate the bottom opening process. However, the two indentation knives in the prior art are generally set on the same rotating shaft. The rotation of the rotating shaft drives the two indentation knives to press two indentations on the bag body sheet. With this structure, when the bag making machine needs to produce packaging bags of different specifications, for example, the distance between the two indentations needs to be adjusted, the prior art needs to be redesigned. The position and spacing of the two indentation knives on the rotating shaft are manually adjusted according to the spacing between the two indentations. In this case, there will be the problem of inconvenient adjustment, and it will also affect the efficiency of the bag making machine in producing packaging bags. The method of setting two indentation knives on one rotating shaft, although it is also possible to adjust the distance between the two indentations by adjusting the conveying speed of the bag body sheet, but this method is more limited. After increasing the conveying speed, the production line needs to be re-debugged, and it may also cause problems such as increased scrap rate and increased noise.

[0070] In order to solve the above technical problems, the indentation device of the bag making machine disclosed in this application sets two indentation knives on two indentation shafts respectively, keeps the conveying speed of the bag sheet unchanged, and then adjusts the relative angle difference between the two indentation shafts in the rotation direction, thereby adjusting the distance between the two indentations.

[0071] The embodiment of this embodiment discloses an indentation device for a bag making machine, see Figure 1 and Figure 2 The creasing device comprises a first creasing mechanism 100 and a second creasing mechanism 200, which are arranged at intervals on a frame 300 along the conveying direction of the bag sheet. Figure 1 The direction indicated by the arrow A, for example, in this embodiment, the second indentation mechanism 200 is located downstream in the conveying direction relative to the first indentation mechanism 100. With this design scheme, the bag sheet will pass through the first indentation mechanism 100 and the second indentation mechanism 200 in sequence during the conveying process and be pressed with two indentations.

[0072] The first creasing mechanism 100 includes a first creasing shaft 110 and a first creasing component 120, with the first creasing component 120 being fixedly mounted on the first creasing shaft 110. The second creasing mechanism 200 includes a second creasing shaft 210 and the first creasing component 120, with the second creasing component 220 being fixedly mounted on the second creasing shaft 210. Furthermore, the first creasing component 120 and the second creasing component 220 extend parallel to each other, perpendicular to the conveying direction.

[0073] Further, see Figure 1 The first indentation mechanism 100 further includes a first servo motor 160, which is fixed to one side of the frame 300. The first servo motor 160 drives the first indentation shaft 110 and the first indentation component 120 to rotate relative to the frame 300. The second indentation mechanism 200 further includes a second servo motor 260, which drives the first indentation shaft 110 and the first indentation component 120 to rotate relative to the frame 300.

[0074] In this embodiment, the first indentation component 120 is fixedly mounted on the first indentation shaft 110, and the second indentation component 220 is fixedly mounted on the second indentation shaft 210. As the first indentation shaft 110 and the second indentation shaft 210 rotate, the first indentation component 120 can indent the bag sheet into a first indentation, and the second indentation component 220 can indent the bag sheet into a second indentation. Furthermore, the first indentation component 120 and the second indentation component 220 extend parallel to each other perpendicular to the conveying direction. When the bag sheet is transported in the conveying direction and sequentially passes through the first indentation mechanism 100 and the second indentation mechanism 200, two indentations parallel to each other and spaced apart can be indented into the bag sheet.

[0075] It should be noted that, in this embodiment, the first indentation component 120 and the second indentation component 220 can both be indentation knives, indentation ridges, etc., and can make indentations on the bag sheet, and this embodiment does not make any specific limitation on this.

[0076] Furthermore, when the bag making machine produces packaging bags of different sizes, the distance between the two indentations that need to be pressed on the bag sheet will also change. For example, when the packaging bags produced become larger, the distance between the two indentations will generally become larger, and when the packaging bags produced become smaller, the distance between the two indentations will generally become smaller. In the present application, the first indentation component 120 and the second indentation component 220 are respectively arranged on the first indentation shaft 110 and the second indentation shaft 210, and the first indentation component 120 and the second indentation component 220 extend parallel to each other perpendicular to the conveying direction. Therefore, when adjusting the spacing between the two indentations, it can be achieved by adjusting the relative angle difference between the first indentation shaft 110 and the second indentation shaft 210 in the rotation direction. Because when the speed at which the bag sheet is conveyed forward in the conveying direction remains unchanged, by adjusting the relative angle difference between the first indentation shaft 110 and the second indentation shaft 210 in the rotation direction, the positions of the two indentations on which the first indentation component 120 and the second indentation component 220 contact and press on the bag sheet can be adjusted, thereby adjusting the spacing between the two indentations.

[0077] For example, in one adjustment method, when the distance between the two indentations needs to be increased, the speed at which the bag sheet is conveyed forward in the conveying direction remains unchanged, the rotation speed and initial rotation timing of the first servo motor 160 remain unchanged, and according to the required increase in the distance, the initial rotation timing of the second servo motor 260 is adjusted to be delayed by a predetermined angle compared to the first servo motor 160, or after the first servo motor 160 drives the first indentation shaft 110 to rotate by a predetermined angle first, the second servo motor 260 starts to drive the second indentation shaft 210 to rotate, so that the first indentation shaft 110 and the second indentation shaft 210 have a relative angle difference in the rotation direction, and then adjust the positions of the two indentations on the bag sheet where the first indentation component 120 and the second indentation component 220 contact and press. For example, according to actual needs, the second servo motor 260 can be controlled to delay rotation by 5°, 15°, 30° or other angles compared to the first servo motor 160 to adjust the distance between the two indentations. When the distance between the two indentations needs to be reduced, this can also be achieved by causing the second servo motor 260 to rotate in advance by a predetermined angle relative to the first servo motor 160 .

[0078] For example, in another adjustment method, the speed at which the bag sheet is conveyed forward in the conveying direction remains unchanged. For example, in the initial state, the relative angle difference between the first indentation component 120 on the first indentation shaft 110 and the second indentation component 220 on the second indentation shaft 210 in the rotation direction is 0°. When it is necessary to increase the distance between the two indentations, for example, the first indentation shaft 110 is stationary, and the second indentation shaft 210 is rotated and adjusted to rotate a predetermined angle relative to the first indentation shaft 110, thereby increasing the relative angle difference between the first indentation component 120 and the second indentation component 220 in the rotation direction, and then adjusting the positions of the two indentations on the bag sheet where the first indentation component 120 and the second indentation component 220 contact and press. The second indentation shaft 210 can be rotated according to actual needs. For example, the phase angle difference of the second indentation component 220 relative to the first indentation component 120 in the rotation direction can be 5°, 15°, 30° or other angles to adjust the distance between the two indentations. Then the first servo motor 160 and the second servo motor 260 rotate, and drive the first indentation shaft 110 and the second indentation shaft 210 to rotate, so that the distance between the two indentations pressed on the bag sheet increases. When the distance between the two indentations needs to be reduced, the relative angle difference between the first indentation component 120 and the second indentation component 220 in the rotation direction can also be reduced to achieve this.

[0079] The indentation device of the bag making machine disclosed in the present application can adjust the angle difference in the rotation direction between the first indentation component 120 on the first indentation shaft 110 and the second indentation component 220 on the second indentation shaft 210 when the size of the bag sheet changes or the distance between the two indentations needs to be adjusted, thereby adjusting the positions of the two indentations on the bag sheet where the first indentation component 120 and the second indentation component 220 contact and press the bag sheet, for example, to press out two indentations with a predetermined distance on a predetermined bag sheet. When making a line indentation, the first indentation shaft 110 and the second indentation shaft 210 rotate, and then two indentations are pressed out on the bag sheet. When two indentations with a wider spacing need to be pressed out on a bag sheet of another specification, for example, the first indentation shaft 110 rotates first, and then the second indentation shaft 210 starts to rotate after a delay of 15°, 20°, or 30° as required, so that the relative angle difference of the second indentation component 220 relative to the first indentation component 120 in the rotation direction increases, thereby increasing the spacing between the two indentations.

[0080] Further, see Figure 1 and Figure 2A first origin positioning assembly 130 is further provided at one end of the first indentation mechanism 100. The first origin positioning assembly 130 includes a first positioning bracket 131 and a first positioning origin 132. The first positioning bracket 131 is fixedly mounted on the frame 300. A first sensor (not shown) is mounted on the first positioning bracket 131. The first positioning origin 132 is fixedly mounted at one end of the first indentation shaft 110, and the detection end of the first sensor extends toward the first positioning origin 132. Figure 3 A first sensor mounting hole 133 is further provided on the first positioning bracket 131 at a position corresponding to the first positioning origin 132 , and the first sensor is mounted on the first sensor mounting hole 133 .

[0081] Please continue to see Figure 1 and Figure 2 A second origin positioning assembly 230 is provided at one end of the second indentation mechanism 200. The second origin positioning assembly 230 includes a second positioning bracket 231 and a second positioning origin 232. The second positioning bracket 231 is fixedly mounted on the frame 300. A second sensor (not shown) is mounted on the second positioning bracket 231. The second positioning origin 232 is fixedly mounted at one end of the second indentation shaft 210, and the detection end of the second sensor extends toward the second positioning origin 232. Figure 3 A second sensor mounting hole 233 is further provided on the second positioning bracket 231 at a position corresponding to the second positioning origin 232 , and the second sensor is mounted on the second sensor mounting hole 233 .

[0082] See also Figure 2 and Figure 3 The first positioning origin 132 is fixedly set at one end of the first indentation shaft 110, and the second positioning origin 232 is fixedly set at the corresponding end of the second indentation shaft 210, and the first positioning bracket 131 and the second positioning bracket 231 are fixedly set on the frame 300 and face the first positioning origin 132 and the second positioning origin 232 respectively. Therefore, the first origin positioning component 130 and the second origin positioning component 230 respectively determine the initial phases of the first indentation part 120 and the second indentation part 220 relative to the frame 300.

[0083] Specifically, in this embodiment, the first sensor and the second sensor can be a photoelectric sensor, a Hall sensor, etc. Figure 2 and Figure 3When the first sensor is installed in the first sensor mounting hole 133 of the first positioning bracket 131, the detection end of the first sensor extends toward the first positioning origin 132 to detect the first positioning origin 132. When the second sensor is installed in the second sensor mounting hole 233 of the second positioning bracket 231, the detection end of the second sensor extends toward the second positioning origin 232 to detect the second positioning origin 232. When indenting each bag body sheet of the same model, the first positioning origin 132 and the second positioning origin 232 are located at the same position, and the spacing and position of the two indentations on each bag body sheet are the same.

[0084] This embodiment also discloses a creasing device for a bag making machine, see Figure 4 The first creasing mechanism 100 further includes a first auxiliary creasing shaft 140, which is disposed on one side of the first creasing shaft 110 and rotates together with the first creasing shaft 110. A first gap 150 is defined between the first creasing shaft 110 and the first auxiliary creasing shaft 140 for conveying the bag sheet.

[0085] The second indentation mechanism 200 also includes a second auxiliary indentation shaft 240, which is arranged on one side of the second indentation shaft 210, and the second auxiliary indentation shaft 240 rotates with the second indentation shaft 210. There is a second gap 250 between the second indentation shaft 210 and the second auxiliary indentation shaft 240 for the bag sheet to be conveyed through.

[0086] Specifically, see Figure 4 In this embodiment, the first auxiliary indentation shaft 140 is located at the bottom of the first indentation shaft 110, and the second auxiliary indentation shaft 240 is located at the bottom of the second indentation shaft 210. The first auxiliary indentation shaft 140 and the second auxiliary indentation shaft 240 will drive the bag sheet forward when rotating, and the first indentation component 120 on the first indentation shaft 110 and the first auxiliary indentation shaft 140 squeeze and form a first indentation on the bag sheet, and the second indentation component 220 and the second auxiliary indentation shaft 240 on the second indentation shaft 210 squeeze and form a second indentation on the bag sheet.

[0087] The embodiment of the present application also discloses an indentation device for a bag making machine, see Figure 4 and Figure 5 , wherein the first indentation component 120 includes a first indentation knife 121 arranged on the first indentation shaft 110 and extending along the axial direction of the first indentation shaft 110, and the first auxiliary indentation shaft 140 is provided with a first indentation groove 141 adapted to the first indentation knife 121, wherein the first indentation knife 121 and the first indentation groove 141 are aligned and adapted in the first gap 150.

[0088] The second indentation component 220 includes a second indentation knife 221 which is arranged on the second indentation shaft 210 and extends along the axial direction of the first indentation shaft 110. The second auxiliary indentation shaft 240 is provided with a second indentation groove 241 which is adapted to the second indentation knife 221. The second indentation knife 221 and the second indentation groove 241 are aligned and adapted in the second gap 250.

[0089] It should be noted that, in this embodiment, the alignment and adaptation of the first indentation blade 121 and the first indentation groove 141 in the first gap 150 means that when the first indentation shaft 110 and the first auxiliary indentation shaft 140 rotate, when the first indentation blade 121 rotates close to the first auxiliary indentation shaft 140, the first indentation groove 141 also rotates close to the first indentation shaft 110. When the first indentation blade 121 and the first indentation groove 141 match together, they are aligned and adapted at the location of the first gap 150 and indent the bag body sheet. The alignment and adaptation principle of the second indentation blade 221 and the second indentation groove 241 in the second gap 250 is the same, and this embodiment does not specifically limit this.

[0090] With this structural design, the first indentation component 120 is set as the first indentation knife 121, and the first indentation groove 141 adapted to the first indentation knife 121 is set on the first auxiliary indentation shaft 140. When the bag sheet is conveyed in the first gap 150, the first indentation knife 121 and the first indentation groove 141 are aligned and adapted, and then an indentation is pressed on the bag sheet. Similarly, the second indentation knife 221 and the second indentation groove 241 are aligned and adapted in the second gap 250 to also press an indentation on the bag sheet. By setting the first indentation knife 121 and the first indentation groove 141 to be adapted, and the second indentation knife 221 to be adapted to the second indentation groove 241, the bag sheet can be prevented from being damaged or crushed by the first indentation knife 121 or the second indentation knife 221.

[0091] The embodiment of the present application also discloses an indentation device for a bag making machine, see Figure 2 A plurality of first mounting plates 111 are axially spaced apart on the first indentation shaft 110 , and a first indentation knife 121 is fixedly disposed on one side of the plurality of first mounting plates 111 .

[0092] A plurality of second mounting plates 211 are axially spaced apart from each other on the second indentation shaft 210 , and a second indentation blade 221 is fixedly disposed on one side of the plurality of second mounting plates 211 .

[0093] For example, in this embodiment, 3, 4, 5 or other numbers of first mounting disks 111 can be set axially at intervals on the first indentation shaft 110. Similarly, 3, 4, 5 or other numbers of second mounting disks 211 can be set axially at intervals on the second indentation shaft 210. Those skilled in the art can design and select according to actual needs, and this embodiment does not make any specific limitations on this.

[0094] With this structural design, setting up multiple first mounting plates 111 and second mounting plates 211 can increase the diameter of the first indentation shaft 110 and the second indentation shaft 210, and there is no need to set up too thick shafts, which can save materials and costs. In addition, setting up the first mounting plate 111 and the second mounting plate 211 can facilitate the installation and replacement of the first indentation knife 121 and the second indentation knife 221. For example, the first indentation knife 121 and the second indentation knife 221 can be detachably mounted on the first mounting plate 111 and the second mounting plate 211 by threaded components, which has the effect of simple structure and easy replacement.

[0095] Furthermore, in another embodiment of the present application, the first indentation mechanism 100 further includes a first driver and a first transmission mechanism 170 , and the first driver synchronously drives the first indentation shaft 110 and the first auxiliary indentation shaft 140 through the first transmission mechanism 170 .

[0096] The second indentation mechanism 200 further includes a second driver and a second transmission mechanism 270 . The second driver synchronously drives the second indentation shaft 210 and the second auxiliary indentation shaft 240 through the second transmission mechanism 270 .

[0097] In this embodiment, the first driver and the second driver can be one of the common drive motors such as a stepper motor and a servo motor. For example, a servo motor can be selected in this embodiment. The first transmission mechanism 170 and the second transmission mechanism 270 are preferably designed as transmission gear sets. For example, see Figure 1 and Figure 2 The first driver is a first servo motor 160 fixed on the frame 300. The first transmission mechanism 170 includes a first driving gear 171 and a first driven gear 172 that are meshed with each other. The first driving gear 171 is arranged at the end of the first auxiliary indentation shaft 140, and the first driven gear 172 is arranged at the corresponding end of the first indentation shaft 110. The first driving gear 171 is transmission-connected to the output end of the first servo motor 160.

[0098] The second driver is a second servo motor 260 fixed to the frame 300. The second transmission mechanism 270 includes a second driving gear 271 and a second driven gear 272 that are meshed with each other. The second driving gear 271 is arranged at the end of the second auxiliary indentation shaft 240, and the second driven gear 272 is arranged at the corresponding end of the second indentation shaft 210. The second driving gear 271 is transmission-connected to the output end of the second servo motor 260.

[0099] It should be noted that those skilled in the art can make design adjustments according to actual needs. For example, the first servo motor 160 and the first transmission mechanism 170 can be set at the same side end of the first auxiliary indentation shaft 140, or the first servo motor 160 can directly drive the first indentation shaft 110. The specific structure of the first transmission mechanism 170 can also be adjusted according to needs. This embodiment does not make the sole limitation to this.

[0100] In one implementation method disclosed in this embodiment, see Figure 1 and Figure 2 The first servo motor 160 and the first transmission mechanism 170 are located at both ends of the first auxiliary indentation shaft 140 in the axial direction. That is, the first servo motor 160 and the first driving gear 171 are respectively located at both ends of the first auxiliary indentation shaft 140. During operation, the first servo motor 160 first drives the first auxiliary indentation shaft 140 and the first driving gear 171 to rotate. Then, the first driving gear 171 engages and drives the first driven gear 172 to rotate. The first driven gear 172 drives the first indentation shaft 110 to rotate, thereby achieving the first servo motor 160 driving the first auxiliary indentation shaft 140 and the first indentation shaft 110 to rotate.

[0101] Similarly, the second servo motor 260 and the second driving gear 271 are located at both ends of the second auxiliary indentation shaft 240. The second servo motor 260 first drives the second auxiliary indentation shaft 240 and the second driving gear 271 to rotate, and then the second driving gear 271 engages and drives the second driven gear 272 to rotate, and the second driven gear 272 drives the second indentation shaft 210 to rotate, thereby achieving the second servo motor 260 driving the second auxiliary indentation shaft 240 and the second indentation shaft 210 to rotate. It should also be noted that those skilled in the art can make design adjustments based on actual needs, and this embodiment does not set the sole limitation on this.

[0102] With this structural design, the first driver is set as the first servo motor 160, and the second driver is set as the second servo motor 260, which makes it more convenient and more precise to control the rotation of the first indentation shaft 110 and the second indentation shaft 210.

[0103] See Figure 2The creasing device of the bag making machine also includes a sheet support plate 400, which extends along the conveying direction through the first gap 150 and the second gap 250 to provide support for the bag sheet, and the first auxiliary creasing shaft 140 and the second auxiliary creasing shaft 240 are at least partially exposed from the sheet support plate 400.

[0104] By setting up the sheet support plate 400, the bag sheet can be conveyed on the sheet support plate 400 during the conveying process, and when an indentation is pressed on the bag sheet, the sheet support plate 400 provides support for the bag sheet so that the bag sheet is laid flat on the sheet support plate 400, avoiding bending or deformation of the bag sheet.

[0105] In summary, the present application discloses a creasing device for a bag making machine, in which a first creasing mechanism 100 and a second creasing mechanism 200 are spaced apart on a frame 300 along the conveying direction of the bag sheet, wherein the first creasing component 120 and the first creasing shaft 110 in the first creasing mechanism 100 are controlled by a first servo motor 160, and the second creasing component 220 and the second creasing shaft 210 in the second creasing mechanism 200 are controlled by a second servo motor 260, and the control is precise and the phase can be easily adjusted. The present application uses the first indentation component 120 and the second indentation component 220 to press out two indentations parallel to each other and with a predetermined interval on the bag sheet, and can further adjust the relative angle difference between the first indentation component 120 and the second indentation component 220 in the rotation direction by adjusting the first servo motor 160 and the second servo motor 260, thereby adjusting the positions of the two indentations on the bag sheet where the first indentation component 120 and the second indentation component 220 contact and press, so as to adjust the spacing between the two indentations on the bag sheet. The structure is simple and the control is convenient.

[0106] Next, the process of the indentation device of the bag making machine disclosed in this application indenting two indentations on the bag body sheet is briefly described:

[0107] See Figure 1The bag sheet is conveyed along the conveying direction A toward the first creasing mechanism 100 and the second creasing mechanism 200 at a predetermined speed. At this time, the first servo motor 160 drives the first auxiliary creasing shaft 140 and the first creasing shaft 110 to rotate, and the second servo motor 260 drives the second auxiliary creasing shaft 240 and the second creasing shaft 210 to rotate. The bag sheet is conveyed on the sheet support plate 400 and passes through the first gap 150 between the first auxiliary creasing shaft 140 and the first creasing shaft 110 and the second gap 250 between the second auxiliary creasing shaft 240 and the second creasing shaft 210 in the conveying direction. In addition, the first creasing blade 121 and the first creasing groove 141 are aligned and adapted to extrude the first indentation in the first gap 150, and the second creasing blade 221 and the second creasing groove 241 are aligned and adapted to extrude the second indentation in the second gap 250. When the size of the bag sheet or the spacing between the first indentation and the second indentation changes and needs to be adjusted, for example, when the spacing between the first indentation and the second indentation needs to be increased, the conveying speed of the bag sheet remains unchanged, and the second servo motor 260 can be controlled to rotate at a certain angle relative to the first servo motor 160, so that the relative angle difference between the second indentation component 220 and the first indentation component 120 in the rotation direction increases by a certain angle, thereby adjusting the positions of the two indentations on the bag sheet where the first indentation component 120 and the second indentation component 220 contact and press, and ultimately increasing the spacing between the first indentation and the second indentation on the bag sheet. Those skilled in the art may also use other solutions to press out indentations or adjust the spacing between indentations, and this embodiment is not intended to be the only limitation.

[0108] It should be noted that, in addition to the implementation methods of the present invention described in the above-mentioned specific embodiments, those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention is introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation method. On the contrary, the purpose of introducing the utility model in conjunction with the implementation method is to cover other options or modifications that may be extended based on the claims of the present utility model. In order to provide an in-depth understanding of the present utility model, the above description contains many specific details, and the present utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0109] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0110] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the utility model.

[0111] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0112] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0113] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above description is provided to further illustrate the present invention in conjunction with specific embodiments, and that the present invention should not be construed as being limited to these descriptions. Those skilled in the art may make various changes in form and detail, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A creasing device for a bag making machine, characterized in that: The machine comprises a first indentation mechanism and a second indentation mechanism, wherein the first indentation mechanism and the second indentation mechanism are arranged at intervals on the frame along the conveying direction of the bag sheet; in The first indentation mechanism includes a first indentation shaft and a first indentation component fixedly disposed on the first indentation shaft, and the second indentation mechanism includes a second indentation shaft and a second indentation component fixedly disposed on the second indentation shaft; and The first impression component and the second impression component extend parallel to each other perpendicular to the conveying direction.

2. The creasing device of the bag making machine according to claim 1, characterized in that: in One end of the first indentation mechanism is further provided with a first origin positioning component, and a corresponding end of the second indentation mechanism is provided with a second origin positioning component; and The first origin positioning component and the second origin positioning component respectively determine the initial phases of the first indentation component and the second indentation component relative to the frame.

3. The creasing device of the bag making machine according to claim 2, characterized in that: in The first origin positioning assembly includes a first positioning bracket and a first positioning origin, the first positioning bracket is fixedly arranged on the frame, a first sensor is arranged on the first positioning bracket, the first positioning origin is fixedly arranged at one end of the first indentation shaft, and a detection end of the first sensor extends toward the first positioning origin; and The second origin positioning assembly includes a second positioning bracket and a second positioning origin. The second positioning bracket is fixedly set on the frame. A second sensor is set on the second positioning bracket. The second positioning origin is fixedly set at the corresponding end of the second indentation shaft, and the detection end of the second sensor extends toward the second positioning origin.

4. The creasing device for a bag making machine according to any one of claims 1 to 3, characterized in that: The first indentation mechanism further includes a first auxiliary indentation shaft disposed on one side of the first indentation shaft and transmission-connected to the first indentation shaft; The second indentation mechanism further includes a second auxiliary indentation shaft disposed on one side of the second indentation shaft and transmission-connected to the second indentation shaft; and The bag body sheet passes through the first gap between the first indentation rotating shaft and the first auxiliary indentation rotating shaft, and the second gap between the second indentation rotating shaft and the second auxiliary indentation rotating shaft in sequence.

5. The creasing device of the bag making machine according to claim 4, characterized in that: in The first indentation component includes a first indentation blade provided on the first indentation shaft and extending along the axis direction of the first indentation shaft, and the first auxiliary indentation shaft is provided with a first indentation groove adapted to the first indentation blade; and The second indentation component includes a second indentation knife provided on the second indentation shaft and extending along the axis direction of the second indentation shaft, and the second auxiliary indentation shaft is provided with a second indentation groove adapted to the second indentation knife; The first indentation blade is aligned and fitted with the first indentation groove at the first gap, and the second indentation blade is aligned and fitted with the second indentation groove at the second gap.

6. The creasing device of the bag making machine according to claim 5, characterized in that: A plurality of first mounting discs are arranged on the first indentation shaft at intervals along the axial direction, and the first indentation blade is fixedly arranged on one side of the plurality of first mounting discs; A plurality of second mounting plates are arranged on the second indentation shaft at intervals along the axial direction, and the second indentation blade is fixedly arranged on one side of the plurality of second mounting plates.

7. The creasing device of the bag making machine according to claim 4, characterized in that: in The first indentation mechanism further includes a first driver and a first transmission mechanism, and the first driver synchronously drives the first indentation shaft and the first auxiliary indentation shaft through the first transmission mechanism; and The second indentation mechanism further includes a second driver and a second transmission mechanism, and the second driver synchronously drives the second indentation shaft and the second auxiliary indentation shaft through the second transmission mechanism.

8. The creasing device of the bag making machine according to claim 7, characterized in that: The first driver is a first servo motor fixed to the frame, the first transmission mechanism includes a first driving gear provided at the end of the first auxiliary indentation shaft, and a first driven gear provided at the corresponding end of the first indentation shaft, the first driving gear is in transmission connection with the output end of the first servo motor; and The second driver is a second servo motor fixed on the frame, and the second transmission mechanism includes a second driving gear arranged at the end of the second auxiliary indentation shaft, and a second driven gear arranged at the corresponding end of the second indentation shaft. The second driving gear is transmission-connected to the output end of the second servo motor.

9. The creasing device of the bag making machine according to claim 4, characterized in that: It also includes a sheet material support plate, which extends along the conveying direction through the first gap and the second gap to provide support for the bag sheet material, and The first auxiliary creasing shaft and the second auxiliary creasing shaft are at least partially exposed from the sheet supporting plate.

Images