Automatic packaging device for plastic bags

Abstract

The invention discloses an automatic plastic bag packaging device, which relates to the technical field of plastic bag packaging and comprises a lug punching mechanism, a plastic bag folding mechanism, a packaging mechanism, a plastic packaging mechanism and a plastic bag transferring device. The lug punching mechanism is used for carrying out lug punching on the stacked plastic bag blanks to form a plastic bag finished product with a handle; the plastic bag folding mechanism is used for folding a plurality of stacked plastic bag finished products; the packaging mechanism is used for packaging; the plastic packaging mechanism is used for carrying out plastic packaging and sealing treatment on the bagged and sealed packaging bags; the plastic bag transferring device is used for transferring the stacked plastic bag blanks to the lug punching station of the lug punching mechanism, transferring the stacked plastic bag finished products to the folding station of the plastic bag folding mechanism, and transferring the folded plastic bag finished products and the packaging bag openings opened through the opening opening mechanism into the packaging bags located on the packaging station. According to the scheme, the plastic packaging effect and quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic bag packaging, in particular to an automatic plastic bag packaging device. BACKGROUND

[0002] After production, a certain number (such as 50, 100) of plastic bags (especially shopping bags with handle holes) need to be stacked into a bundle and packaged for transportation, storage and sales. The common plastic bag bundling and packaging method on the market is mainly the rubber band / bundling tape bundling type, that is, a rubber band or a plastic bundling tape is directly wound outside the stacked plastic bag bundle for fixation. Although this method is simple, it is not firm and cannot guarantee the cleanliness of the internal plastic bags. On this basis, relevant personnel fold a single sheet of packaging leather in half, then place the stacked plastic bags between the upper and lower layers of packaging leather, and seal the three sides of the packaging leather to pack it. This method has three plastic sealing edges, and too many plastic sealing edges result in poor packaging effect and easy leakage. SUMMARY

[0003] The purpose of the present application is to provide an automatic plastic bag packaging device to solve the problems existing in the prior art and improve the plastic packaging effect and quality.

[0004] To achieve the above purpose, the present application provides the following solutions:

[0005] The present application provides an automatic plastic bag packaging device, comprising:

[0006] The ear punching mechanism is used for ear punching of the stacked plurality of plastic bag blanks to form plastic bag finished products with handles.

[0007] The plastic bag folding mechanism is used for folding the stacked plurality of plastic bag finished products.

[0008] The packaging mechanism comprises a packaging station, a packaging bag stacking station, a packaging bag transfer mechanism, a packaging bag opening mechanism and a mouth opening mechanism. The packaging bag stacking station is used for stacking the packaging bags to be used, which only have an opening on one side. The packaging bag transfer mechanism is used for transferring one packaging bag on the packaging bag stacking station to the packaging station. The packaging bag opening mechanism is used for opening the bag opening of the packaging bag on the packaging station. The mouth opening mechanism is used for opening and holding the packaging bag opening after being opened.

[0009] The plastic sealing mechanism is used for plastic sealing and sealing treatment of the packaging bag after being packed and sealed.

[0010] The plastic bag transfer device is used for transferring the stacked plastic bag blanks to the ear punching station of the ear punching mechanism, transferring the stacked plastic bag products to the folding station of the plastic bag folding mechanism, transferring the folded plastic bag products to the inside of the packaging bag located on the packaging station through the opening mechanism, and transferring the packaging bag containing the plastic bag products to the plastic sealing station of the plastic sealing mechanism.

[0011] Preferably, the packaging bag transfer mechanism comprises a plurality of vacuum suction cups, a first negative pressure generating device and a first suction cup driving device. The first negative pressure generating device is used to provide and control the negative pressure suction state of the vacuum suction cups. The first suction cup driving device can drive the vacuum suction cups to move above the packaging bag stacking station, so that the vacuum suction cups adsorb the uppermost packaging bag in the stack under the action of negative pressure provided by the first negative pressure generating device. The first suction cup driving device can drive the vacuum suction cups adsorbing the packaging bag to move above the packaging station. When the vacuum suction cups adsorbing the packaging bag are above the packaging station, the first negative pressure generating device releases the negative pressure state of the vacuum suction cups, so that the packaging bag is released and falls on the packaging station. The first suction cup driving device can drive the vacuum suction cups after releasing the packaging bag to move away from above the packaging station.

[0012] Preferably, the packaging station comprises a plate body. The packaging bag opening mechanism comprises:

[0013] A plurality of vacuum suction holes are arranged on the plate body and located below the predetermined area of the packaging bag opening.

[0014] A second negative pressure generating device is in communication with the vacuum suction holes through a pipeline, and is used to apply suction force to the lower piece of the packaging bag through the vacuum suction holes when the packaging bag is placed on the packaging station, so that the lower piece is tightly attached to the plate body.

[0015] A movable vacuum suction cup assembly comprises at least one opening suction cup.

[0016] A second suction cup driving device is used to drive the vacuum suction cup assembly to move.

[0017] A third negative pressure generating device is used to provide negative pressure to the opening suction cup and control the negative pressure state.

[0018] The second suction disc driving device is configured to drive the vacuum suction disc assembly to move to a position above the packing work station and corresponding to the upper piece above the predetermined area of the bag opening of the packing bag, drive the vacuum suction disc assembly to descend so that the opening suction disc contacts and adsorbs the upper piece of the packing bag, drive the vacuum suction disc assembly adsorbing the upper piece to ascend, drive the vacuum suction disc assembly adsorbing the upper piece to ascend while the second negative pressure generating device adsorbs the lower piece, so that the upper piece and the lower piece of the packing bag are separated, thereby realizing the opening of the bag opening, and in the state that the opening mechanism opens and maintains the opening of the bag opening, the third negative pressure generating device releases the negative pressure state of the opening suction disc, and the second suction disc driving device drives the opening suction disc to move away from above the packing work station.

[0019] Preferably, the opening mechanism comprises two supporting fingers and a supporting finger driving device, the supporting finger driving device is used to drive the two supporting fingers to move from the opened bag opening of the packing bag to the inside of the packing bag, drive the two supporting fingers located in the inside of the packing bag to move away from each other along the width direction of the packing bag to open and maintain the bag opening, drive the two supporting fingers to move close to each other along the width direction of the packing bag after the plastic bag product is transferred to the inside of the packing bag, and drive the two supporting fingers moving close to each other to move out of the bag opening from the inside of the packing bag.

[0020] Preferably, the plastic bag folding mechanism comprises a support panel, a lower clamp plate assembly, an upper clamp plate assembly, a first driving device, a second driving device and a third driving device; in an initial state, the lower clamp plate assembly, the support panel and the packing station are sequentially arranged along the conveying direction of the plastic bag product; the lower clamp plate assembly comprises two independently arranged lower clamp plates; the upper clamp plate assembly is arranged above the lower clamp plate assembly and comprises two independently arranged upper clamp plates; the first driving device is connected with the upper clamp plate assembly and is used to drive the two upper clamp plates to move horizontally relative to the corresponding lower clamp plates to above the lower clamp plates and then to move vertically downward to clamp the plastic bag product, and is also used to drive the two upper clamp plates to move vertically upward relative to the corresponding lower clamp plates and then to move horizontally to move away from above the lower clamp plates; the second driving device is connected with the support panel and is used to drive the support panel to move vertically; the two upper clamp plates, the two lower clamp plates and the support panel jointly form the folding station, and the upper surfaces of the two lower clamp plates and the support panel jointly form a bearing plane of the plastic bag product; the two upper clamp plates can be lowered to cooperate with the corresponding lower clamp plates to form a clamping state under the driving of the first driving device; the positions of the two lower clamp plates and the positions of the two upper clamp plates correspond to the areas where the two handles of the plastic bag product are located; the support panel is configured to make the part of the plastic bag product that is not clamped by the lower clamp plate assembly and the upper clamp plate assembly to sag when the plastic bag product is located in the folding station; the third driving device is configured to drive the lower clamp plate assembly and the upper clamp plate assembly to move along the conveying direction to the packing station to realize packing, and the plate body of the packing station is located in front of the folding station and the space above the folding station is unobstructed, so that when the clamp plate assembly carrying the preliminarily folded plastic bag product moves to the packing station, the sagging part of the plastic bag product can contact and be limited by the upper surface of the plate body of the packing station; the third driving device is also configured to move the plastic bag product wrapped with the packing bag along the conveying direction to the rear side edge of the plate body of the packing station after the packing is completed.

[0021] The third driving device, the lower clamp plate assembly and the upper clamp plate assembly are used as the plastic bag transferring device.

[0022] Preferably, the plastic bag folding mechanism further comprises a waste material discharging conveyor belt arranged behind the ear punching station of the ear punching mechanism and used to convey and move out the waste material generated by the ear punching mechanism.

[0023] A shielding plate;

[0024] A horizontal movement driving device connected with the shielding plate and used to drive the shielding plate to move reciprocally along the horizontal direction.

[0025] The shielding plate is configured to be away from the upper area of the waste feeding conveyor in a normal position, and to be moved and covered on the upper area of the waste feeding conveyor in a working position.

[0026] The horizontal moving driving device is configured to drive the shielding plate to move from the normal position to the working position before the plastic bag blank is conveyed to pass above the waste feeding conveyor, so as to provide covering protection when the plastic bag blank passes.

[0027] Preferably, a plurality of holes are uniformly arranged on the shielding plate.

[0028] Preferably, the plastic sealing mechanism comprises a resistance strip fixedly arranged at the bottom of the plastic sealing station, and the upper surface of the resistance strip directly constitutes a plastic sealing heating contact surface.

[0029] A pressing plate is arranged directly above the plastic sealing station.

[0030] A pressing plate driving device is connected with the pressing plate, and is used to drive the pressing plate to vertically ascend and descend.

[0031] Preferably, the plastic bag transferring device comprises a first jaw assembly and a second jaw assembly, the first jaw assembly is configured to transfer the stacked plastic bag blanks to the ear punching station of the ear punching mechanism, and to transfer the stacked plastic bag products to the folding station of the plastic bag folding mechanism, the second jaw assembly is configured to transfer the packaging bag containing the plastic bag products to the plastic sealing station of the plastic sealing mechanism, the first jaw assembly comprises a plurality of first jaws, the second jaw assembly comprises a plurality of second jaws, the spacing between the plurality of first jaws is adjustable, the spacing between the plurality of second jaws is adjustable, and the plurality of jaws in the first jaw assembly and the second jaw assembly are configured to adapt to plastic bags or packaging bags of different widths by adjusting the spacing therebetween, and to uniformly hold the plastic bags or the packaging bags.

[0032] Preferably, the plastic bag packaging device further comprises a bagging device, and the bagging device is used to stack a specific number of plastic bag blanks.

[0033] The present application has the following technical effects relative to the prior art:

[0034] The plastic bag automatic packaging device provided by the present application can use a packaging bag with only one opening to package plastic bags, so that the finished product after plastic sealing has a plastic sealing edge only on one side, and the packaging effect is good and leakage is not easy to occur. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed in the embodiments will be briefly introduced as follows. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 The structure schematic diagram of the plastic bag automatic packaging device provided by the embodiment of the present application is shown in the figure.

[0037] Figure 2 The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure. Figure 1

[0038] The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure. Figure 3 Figure 2 The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure.

[0039] The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure. Figure 4 Figure 1 The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure.

[0040] The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure. Figure 5 Figure 1 The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure.

[0041] The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure. Figure 6 The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure. Figure 1 The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure. Figure 1 The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure.

[0042] The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure. Figure 7 Figure 1 The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure.

[0043] The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure. Figure 8 Figure 7 The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure.

[0044] The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure. Figure 9 Figure 1 The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure.

[0045] The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure. Figure 10 Figure 9 The structure schematic diagram of the main structure of the packaging mechanism is shown in the figure.

[0046] In the figure: 1-bagging device; 2-ear punching mechanism; 3-plastic bag folding mechanism; 4-packing mechanism; 5-plastic sealing mechanism; 6-product output conveyor belt; 8-electric adjustment mechanism; 9-waste material discharging conveyor belt; 31-supporting panel; 32-lower clamping plate; 33-upper clamping plate; 41-packing bag transferring mechanism; 42-packing bag stacking station; 43-packing bag opening mechanism; 44-opening mechanism; 45-packing station; 431-vacuum suction hole; 432-opening suction disc; 441-opening finger; 51-resistance strip; 52-pressing plate; 71-first clamping jaw assembly; 72-second clamping jaw assembly; 711-square shaft; 712-first clamping jaw; 81-distance adjusting motor; 82-transmission belt; 91-shielding plate. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0048] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0049] In the present specification, the rear and the front are defined according to the conveying direction of the material, and the component a is located behind the component b, that is, the component a and the component b are arranged in sequence along the conveying direction of the material.

[0050] The embodiments of the present application will be described below with reference to Figures 1 to 10

[0051] The present application provides a plastic bag automatic packaging device, which comprises an ear punching mechanism 2, a plastic bag folding mechanism 3, a packing mechanism 4, a plastic sealing mechanism 5 and a plastic bag transferring device.

[0052] The ear punching mechanism 2 is used for punching ears on a plurality of stacked plastic bag blanks to form plastic bag finished products with handles; the plastic bag blanks are materials cut out by the previous cutting process, and the plurality of stacked plastic bag blanks are usually a specific number of plastic bag blanks.

[0053] The plastic bag folding mechanism 3 is used for folding the plurality of stacked plastic bag finished products, which is to shorten the length of the plastic bag finished products for the convenience of subsequent packing.

[0054] ​The packing mechanism 4 includes a packing station 45, a packing bag stacking station 42, a packing bag transferring mechanism 41, a packing bag opening mechanism 43 and a mouth-stretching mechanism 44; the packing bag stacking station 42 is used to stack packing bags with an opening on only one side to be used; the packing bag transferring mechanism 41 is used to transfer a packing bag on the packing bag stacking station 42 to the packing station 45; the packing bag opening mechanism 43 is used to open the bag opening of the packing bag on the packing station 45; the mouth-stretching mechanism 44 is used to stretch and maintain the bag opening after it is opened; the packing bag is a prefabricated bag with an opening on one side, and when stretching the bag opening, it is sufficient to stretch the opening on one side of the packing bag, and when plastic-sealing is performed subsequently, it is also necessary to plastic-seal the opening on one side.

[0055] The plastic sealing mechanism 5 is used to perform plastic sealing on the packed and sealed packaging bags.

[0056] The plastic bag transfer device is used to transfer the stacked plastic bag blanks to the ear punching station of the ear punching mechanism 2, transfer the stacked plastic bag products to the folding station of the plastic bag folding mechanism 3, transfer the folded plastic bag products to the inside of the packing bag located on the packing station 45 through the bag opening of the packing bag opened by the opening mechanism 44, and transfer the packing bag containing the plastic bag products to the plastic sealing station of the plastic sealing mechanism 5.

[0057] When in use, the plastic bag transferring device transfers the stacked plastic bag blanks to the ear punching station of the ear punching mechanism 2 → the ear punching mechanism 2 punches ears on the stacked plastic bag blanks to form a finished plastic bag with handles → the plastic bag transferring device transfers the finished plastic bag to the folding station of the plastic bag folding mechanism 3 → the plastic bag folding mechanism 3 folds the stacked multiple finished plastic bags → the plastic bag transferring device transfers the folded finished plastic bag through the opening of the packing bag opened by the opening mechanism 44 to the inside of the packing bag located on the packing station 45 and completes the packing at the same time → the plastic bag transferring device → transfers the packing bag containing the finished plastic bag to the plastic sealing station of the plastic sealing mechanism 5 → the plastic sealing mechanism 5 is used to perform plastic sealing and sealing processing on the packed and sealed packing bag.

[0058] In addition, since the packing bag transfer and opening process is involved, the following steps need to be performed while the above steps are being performed: the packing bag transfer mechanism 41 transfers a packing bag on the packing bag stacking station 42 to the packing station 45 → the packing bag opening mechanism 43 opens the bag opening of the packing bag on the packing station 45 → the opening opening mechanism 44 is used to open and maintain the bag opening after it is opened.

[0059] The automatic plastic bag packaging device provided by the present invention can use a packaging bag with only one side open to package the plastic bags. In this way, the finished product after plastic sealing has a plastic sealing edge on only one side, which has a good packaging effect and is not easy to leak.

[0060] In some embodiments, the packing bag transfer mechanism 41 comprises a plurality of vacuum suction cups, a first negative pressure generating device for providing and controlling the negative pressure suction state of the vacuum suction cups, and a first suction cup driving device. The first suction cup driving device can drive the vacuum suction cups to move above the packing bag stacking station 42, so that the vacuum suction cups can suction the uppermost packing bag in the stacked packing bags under the action of the negative pressure provided by the first negative pressure generating device. The first suction cup driving device can drive the vacuum suction cups with the suctioned packing bag to move above the packing station 45. When the vacuum suction cups with the suctioned packing bag are above the packing station 45, the first negative pressure generating device releases the negative pressure state of the vacuum suction cups, so that the packing bag is released and falls on the packing station 45. The first suction cup driving device can drive the vacuum suction cups after releasing the packing bag to move away from above the packing station 45.

[0061] This embodiment realizes the suction, transfer and release of the packing bag. It can be understood that the vacuum suction cups are connected to the first negative pressure generating device through flexible pipelines, so the first suction cup driving device only needs to drive the movement of the vacuum suction cups. Of course, in some examples, the first negative pressure generating device can also be driven to move at the same time.

[0062] In some examples, the first negative pressure generating device is a vacuum pump or a fan or other device capable of driving air flow.

[0063] In some examples, the spacing between the plurality of vacuum suction cups is adjustable, specifically manually adjustable. The means adopted is that the vacuum suction cups are fixed by long round holes and bolts and nuts, and the adjustment of the relative position of the bolts and the long round holes can realize the adjustment of the position of the vacuum suction cups.

[0064] In this example, the spacing between the vacuum suction cups is set to be adjustable in order to adapt to packing bags of different sizes. For example, when the packing bag is small, the vacuum suction cups need to be moved closer to each other to uniformly suction the small-size packing bag.

[0065] In some embodiments, the packing station 45 comprises a plate body; the opening mechanism 43 of the bag comprises: a vacuum suction hole 431, a second negative pressure generating device, a movable vacuum suction disc assembly, a second suction disc driving device, and a third negative pressure generating device; the vacuum suction hole 431 is arranged on the plate body and is located below the predetermined area of the bag opening of the packing bag; the second negative pressure generating device is in communication with the vacuum suction hole 431 through a pipeline, and is used to exert a suction force on the lower piece of the packing bag through the vacuum suction hole 431 when the packing bag is placed on the packing station 45, so that the lower piece is tightly attached to the plate body; the movable vacuum suction disc assembly comprises at least one opening suction disc 432; the second suction disc driving device is used to drive the vacuum suction disc assembly to move; the third negative pressure generating device is used to provide negative pressure for the opening suction disc 432 and control the negative pressure state; the second suction disc driving device is configured to: drive the vacuum suction disc assembly to move to a position above the packing station 45 and corresponding to the upper piece above the predetermined area of the bag opening of the packing bag; drive the vacuum suction disc assembly to descend so that the opening suction disc 432 contacts and adsorbs the upper piece of the packing bag; drive the vacuum suction disc assembly adsorbing the upper piece to rise; while the second negative pressure generating device adsorbs the lower piece, drive the vacuum suction disc assembly adsorbing the upper piece to rise so that the upper piece and the lower piece of the packing bag are separated, thereby realizing the opening of the bag opening; in the state that the opening mechanism 44 opens and maintains the opening of the bag opening, the third negative pressure generating device releases the negative pressure state of the opening suction disc 432, and the second suction disc driving device drives the opening suction disc 432 to move away from above the packing station 45.

[0066] In operation, the packing bag is placed on the packing station 45, and the opening below the packing bag is the vacuum suction hole 431; the second negative pressure generating device is turned on to adsorb the lower piece of the packing bag through the vacuum suction hole 431; the second suction disc driving device drives the suction disc to move above the bag opening of the packing bag, and then descends to press on the packing bag; the third negative pressure generating device is used to apply negative pressure to the opening suction disc 432 in advance; at this time, the purpose of adsorbing the upper piece of the packing bag by the opening suction disc 432 is achieved; then the opening suction disc 432 is driven to rise, that is, the bag opening is realized; then the opening mechanism 44 is used to open the packing bag with the opened bag opening.

[0067] This embodiment realizes the automatic opening action of the packing bag.

[0068] In some embodiments, the opening mechanism 44 comprises two support fingers 441 and a support finger driving device; the support finger driving device is used to drive the two support fingers 441 to move from the opened bag opening of the packing bag to the inside of the packing bag, drive the two support fingers 441 located in the inside of the packing bag to move away from each other along the width direction of the packing bag to open and maintain the bag opening, drive the two support fingers 441 to move close to each other along the width direction of the packing bag after the finished product of the plastic bag is moved into the inside of the packing bag, and drive the two support fingers 441 that move close to each other to move out of the bag opening from the inside of the packing bag.

[0069] During operation, when the bag opening is opened, the finger-supporting driving device drives the two fingers 441 to move horizontally into the packaging bag, and then move away from each other horizontally, thereby achieving the purpose of opening the bag. After the bag opening is opened, the opening suction cup 432 is driven by the second suction cup driving device to move away from the packaging bag to avoid affecting subsequent processes.

[0070] This embodiment achieves the purpose of continuously holding the packaging bag open.

[0071] In some examples, the finger drive device drives the two fingers 441 located inside the packing bag to move away from each other along the width direction of the packing bag, and the distance is adjustable to accommodate packing bags of different sizes. For example, the power source of the finger drive device can be a servo motor or a cylinder to form an adjustable mechanism.

[0072] In some embodiments, the plastic bag transfer device includes a first clamping jaw assembly 71 and a second clamping jaw assembly 72. The first clamping jaw assembly 71 is configured to: transfer the stacked plastic bag blanks to the ear punching station of the ear punching mechanism 2; transfer the stacked plastic bag finished products to the folding station of the plastic bag folding mechanism 3; the second clamping jaw assembly 72 is configured to: transfer the packaging bag containing the plastic bag finished products to the plastic sealing station of the plastic sealing mechanism 5; the first clamping jaw assembly 71 includes multiple first clamping jaws 712; the second clamping jaw assembly 72 includes multiple second clamping jaws; the spacing between the multiple first clamping jaws 712 is adjustable; the spacing between the multiple second clamping jaws is adjustable; the multiple clamping jaws in the first clamping jaw assembly 71 and the second clamping jaw assembly 72 are configured to: adapt to plastic bags or packaging bags of different widths by adjusting their spacing, and achieve uniform gripping.

[0073] This embodiment realizes the transfer of plastic bags.

[0074] Some examples, such as Figure 9 and Figure 10 As shown, the spacing between the multiple first clamps 712 can be manually adjusted; specifically, the multiple first clamps 712 can be detachably connected to a supporting square shaft 711, and the position of the first clamps 712 can be adjusted by disassembling the first clamps 712, adjusting the position, and then connecting it to the supporting square shaft 711.

[0075] Some examples, such as Figure 7 and Figure 8As shown, the second jaw assembly 72 includes two second jaws, the distance between the two second jaws is electrically adjusted, specifically, there is an electric adjustment mechanism 8, which includes an electric adjustment motor 81 and a transmission belt 82 connected with the motor shaft, the transmission belt 82 is divided into two parts by two drive wheels on both sides, the two second jaws are respectively fixed on the two part structures of the transmission belt 82, in this way, by driving the drive wheels to rotate forward by the electric adjustment motor 81, the two second jaws can be moved close to each other, by driving the drive wheels to rotate reversely, the two second jaws can be moved away from each other, and then the packing bags with different widths can be used.

[0076] As shown in some embodiments, as shown in Figure 4 and Figure 5 As shown, the plastic bag folding mechanism 3 includes a support panel 31, a lower jaw assembly, an upper jaw assembly, a first driving device, a second driving device and a third driving device; in the initial state, the lower jaw assembly, the support panel 31 and the packing station 45 are arranged in sequence along the conveying direction of the plastic bag product, the lower jaw assembly includes two independently arranged lower jaws 32; the upper jaw assembly is arranged directly above the lower jaw assembly, and the upper jaw assembly includes two independently arranged upper jaws 33; the first driving device is connected with the upper jaw assembly, and the first driving device is used to drive the two upper jaws 33 to move synchronously horizontally to above the corresponding lower jaws 32 and then move vertically downward to clamp the plastic bag product, and is used to drive the two upper jaws 33 to move synchronously vertically upward and then move horizontally to move away from above the corresponding lower jaws 32; the second driving device is connected with the support panel 31 and is used to drive the support panel 31 to move vertically; the two upper jaws 33, the two lower jaws 32 and the support panel 31 jointly constitute a folding station, and the upper surfaces of the two lower jaws 32 and the support panel 31 jointly form a bearing plane of the plastic bag product; the two upper jaws 33 can be lowered to cooperate with the respective corresponding lower jaws 32 under the driving of the first driving device, and respectively form a clamping state; the positions of the two lower jaws 32 and the positions of the two upper jaws 33 correspond to the areas where the two handles of the plastic bag product are located; the support panel 31 is configured to, when the plastic bag product is located in the folding station, its downward movement can make the part of the plastic bag product not clamped by the lower jaw assembly and the lower jaw assembly sag; the third driving device is configured to drive the lower jaw assembly and the upper jaw assembly to carry the plastic bag product to move along the conveying direction to the packing station 45 to realize packing, and the plate body of the packing station 45 is located in front of the folding station and the space above is unobstructed, so that when the jaw assembly carrying the preliminarily folded plastic bag product moves to the packing station 45, the sagging part of the plastic bag product can contact and be limited on the upper surface of the plate body of the packing station 45; the third driving device is also configured to, after the packing is completed, carry the plastic bag product wrapped with the packing bag to move along the conveying direction to the bottom of the packing bag, which protrudes from the rear side edge of the plate body of the packing station 45;

[0077] The second driving device, the lower clamping plate assembly and the upper clamping plate assembly are used as a plastic bag transferring device.

[0078] The working process is as follows: in the initial state, the upper clamping plate 33 is located on one side of the lower clamping plate 32, the height of the support panel 31 and the height of the upper surface of the lower clamping plate 32 are close, the first clamping jaw 712 of the first clamping jaw assembly 71 clamps the bottom of the plastic bag product and moves the plastic bag product to a part of which is located on the upper clamping plate 33 and another part of which is located above the support panel 31 (the support panel 31 supports the plastic bag product below to prevent the plastic bag product from sliding off the lower clamping plate 32 under the action of gravity), the first clamping jaw 712 remains in the clamping state, then the first driving device drives the upper clamping plate 33 to move above the lower clamping plate 32, and then drives the upper clamping plate 33 to descend and clamp the plastic bag product together with the lower clamping plate 32, at this time, the first clamping jaw 712 is driven to release the plastic bag, and the support panel 31 is lowered, which can make the part of the plastic bag product not clamped by the lower clamping plate assembly and the lower clamping plate assembly sag; then the third driving device drives the part of the plastic bag product sagging to move towards the packing station 45 along the conveying direction, in this process, the sagging part of the plastic bag product can contact and be limited by the upper surface of the board of the packing station 45, and then enter the packing bag while completing the folding process of the plastic bag product.

[0079] This embodiment realizes the folding process of the plastic bag product.

[0080] It can be understood that the third driving device, the lower clamping plate assembly and the upper clamping plate assembly in this embodiment have the function of transferring the plastic bag product from the folding station to the packing station 45, so the third driving device, the lower clamping plate assembly and the upper clamping plate assembly are used as a plastic bag transferring device.

[0081] In some examples, the distance between the two lower clamping plates 32 is adjustable, and the distance between the two upper clamping plates 33 is also adjustable to adapt to plastic bag products of different sizes.

[0082] The distance adjustment mode between the two lower clamping plates 32 is the same as the adjustment mode of the second clamping jaw in the second clamping jaw assembly 72 in the above embodiment, and the same electric adjustment mechanism 8 is used.

[0083] In some examples, the lower clamping plate 32 and the lower clamping plate 32 can clamp at least two ears of the plastic bag product, i.e. the handle part.

[0084] In some embodiments, as Figure 6As shown, the embodiment of the present application further comprises: a waste material discharging conveying belt 9, a shielding plate 91, and a horizontal movement driving device. The waste material discharging conveying belt 9 is arranged behind the ear-punching station of the ear-punching mechanism 2 and is used to transport and remove the waste material punched by the ear-punching mechanism 2. The horizontal movement driving device is connected with the shielding plate 91 and is used to drive the shielding plate 91 to reciprocally move along the horizontal direction. The shielding plate 91 is configured to: in a normal position, move away from the upper area of the waste material discharging conveying belt 9; and in a working position, move and cover the upper area of the waste material discharging conveying belt 9.

[0085] The horizontal movement driving device is configured to: before the plastic bag blank is transported to pass above the waste material discharging conveying belt 9, drive the shielding plate 91 to move from the normal position to the working position, so as to provide covering protection when the plastic bag blank passes.

[0086] The embodiment realizes the purpose of transporting and removing the waste material punched by the ear-punching mechanism 2, and the shielding plate 91 is used to avoid affecting the transportation of the material on the waste material discharging conveying belt 9 when the plastic bag blank passes.

[0087] In some examples, the waste material on the ear-punching station can be pushed onto the waste material discharging conveying belt 9 by a separately arranged discharging assembly, for example, a push plate driven by a linear movement mechanism, or blown onto the waste material discharging conveying belt 9 by a blowing mechanism. In addition, a plurality of elastic strips with certain deformation resistance can be arranged on the first clamping jaw assembly 71, and the elastic strips are hung down. During the process that the first clamping jaw assembly 71 returns to the initial position, the elastic strips can drive the waste material on the ear-punching station to the waste material discharging conveying belt 9 on one side.

[0088] In some embodiments, a plurality of holes are uniformly arranged on the shielding plate 91.

[0089] The embodiment realizes the purpose of leaking the impurities on the plastic bag blank to the waste material discharging conveying belt 9 through the shielding plate 91.

[0090] In some embodiments, the plastic sealing mechanism 5 comprises: a resistance strip 51, a pressing plate 52, and a pressing plate driving device. The resistance strip 51 is fixedly arranged at the bottom of the plastic sealing station and its upper surface directly constitutes a plastic sealing heating contact surface. The pressing plate 52 is arranged directly above the plastic sealing station. The pressing plate driving device is connected with the pressing plate 52 and is used to drive the pressing plate 52 to vertically ascend and descend.

[0091] The pressing plate 52 in the embodiment is configured to: when driven to descend, directly press the bag opening of the packaging bag on the plastic sealing station on the upper surface of the resistance strip 51.

[0092] The resistance strip 51 is configured to: in a power-on state, directly contact and heat the pressed bag opening of the packaging bag on the upper surface, so as to realize plastic sealing.

[0093] In the embodiment, the resistance strip 51 directly contacts the bag opening of the packing bag to perform plastic sealing. Compared with the existing scheme of additionally arranging a heat transfer column, the scheme provided by the embodiment requires a smaller voltage under equivalent heat, thereby saving electric energy.

[0094] In some embodiments, the bagging device 1 is used to stack a specific number of plastic bag blanks.

[0095] The embodiment realizes the stacking of a specific number of plastic bag blanks. Since the assembly is a mature device, the embodiment will not be described again.

[0096] In some embodiments, the product output conveyor belt 6 is arranged behind the plastic sealing mechanism 5, and the second jaw assembly 72 can also drag the finished product after plastic sealing to the product output conveyor belt 6.

[0097] It can be understood that the jaw assemblies in the embodiments of the present application all clamp the material to drag it to the next station.

[0098] In the present specification, any mature structure in the prior art can be used to drive the assembly to move, for example, a motor is used to drive a belt to transmit, and the assembly to be moved is installed on the belt; for another example, a pneumatic cylinder or a hydraulic cylinder is used to drive; for another example, a linear motor module is used to drive; for another example, an assembled motor lead screw module is used to realize.

[0099] The principle and implementation mode of the present application are described by using specific examples in the present application. The above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In conclusion, the content of the present specification should not be understood as a limitation of the present application.

Claims

1. A plastic bag automatic packaging device, characterized by: include: Ear punching mechanism: used to punch ears on multiple stacked plastic bag blanks to form finished plastic bags with handles; Plastic bag folding mechanism: used for folding a plurality of stacked plastic bags into two pieces; Packing mechanism: including packing station, packing bag stacking station, packing bag transfer mechanism, packing bag opening mechanism and opening mechanism; The packing bag stacking station is used to stack packing bags to be used that have an opening on only one side; The packing bag transfer mechanism is used to transfer a packing bag on the packing bag stacking station to the packing station; the packing bag opening mechanism is used to open the bag opening of the packing bag on the packing station; The opening mechanism is used to open and maintain the opening of the packing bag after it is opened; Plastic sealing mechanism: used for plastic sealing of packed and sealed bags; The plastic bag transfer device is used to: transfer the stacked plastic bag blanks to the ear punching station of the ear punching mechanism, transfer the stacked plastic bag products to the folding station of the plastic bag folding mechanism, transfer the folded plastic bag products to the inside of the packing bag located at the packing station through the opening of the packing bag opened by the opening mechanism, and transfer the packing bag containing the plastic bag products to the plastic sealing station of the plastic sealing mechanism.

2. The automatic plastic bag packaging device according to claim 1, characterized in that: The packaging bag transfer mechanism includes multiple vacuum suction cups, a first negative pressure generating device and a first suction cup driving device, the first negative pressure generating device is used to provide and control the negative pressure adsorption state of the vacuum suction cup; the first suction cup driving device can drive the vacuum suction cup to move above the packaging bag stacking station, so that the vacuum suction cup adsorbs the topmost packaging bag of the stacked packaging bags under the action of the negative pressure provided by the first negative pressure generating device; the first suction cup driving device can drive the vacuum suction cup with the packaging bag adsorbed to move above the packaging station; when the vacuum suction cup with the packaging bag adsorbed is in the state above the packaging station, the first negative pressure generating device releases the negative pressure state of the vacuum suction cup, so that the packaging bag is released and falls on the packaging station; the first suction cup driving device can drive the vacuum suction cup to leave the packaging station after releasing the packaging bag.

3. The automatic plastic bag packaging device according to claim 1, characterized in that: The packaging station includes a plate body; the packaging bag opening mechanism includes: A plurality of vacuum adsorption holes are provided on the plate body and are located below a predetermined area of ​​the bag opening of the packing bag; a second negative pressure generating device, which is connected to the vacuum adsorption hole through a pipeline and is used to apply an adsorption force to the lower piece of the packing bag through the vacuum adsorption hole when the packing bag is placed on the packing station, so that the lower piece is closely attached to the plate body; a movable vacuum suction cup assembly comprising at least one open suction cup; A second suction cup driving device, used for driving the vacuum suction cup assembly to move; a third negative pressure generating device, configured to provide negative pressure to the open suction cup and control the negative pressure state; The second suction cup driving device is configured to: drive the vacuum suction cup assembly to move to a position above the packaging station and corresponding to the upper piece above a predetermined area of ​​the bag opening of the packaging bag; drive the vacuum suction cup assembly to descend so that the opening suction cup contacts and adsorbs the upper piece of the packaging bag; drive the vacuum suction cup assembly adsorbing the upper piece to rise; while the second negative pressure generating device adsorbs the lower piece, drive the vacuum suction cup assembly adsorbing the upper piece and rise so that the upper piece and the lower piece of the packaging bag are separated, thereby realizing the opening of the bag; when the opening opening mechanism opens and keeps the bag opening open, the third negative pressure generating device releases the negative pressure state of the opening suction cup, and the second suction cup driving device drives the opening suction cup to move away from above the packaging station.

4. The automatic plastic bag packaging device according to claim 1, characterized in that: The opening-opening mechanism includes: two opening fingers and a opening-finger driving device, wherein the opening-opening mechanism is used to drive the two opening fingers to move from the opened bag opening to the inside of the bag opening, drive the two opening fingers located inside the bag opening to move away from each other along the width direction of the bag opening to open and maintain the bag opening, drive the two opening fingers to move toward each other along the width direction of the bag opening after the finished plastic bag is transferred into the bag opening, and drive the two opening fingers that are close to each other to move out of the bag opening from the inside of the bag opening.

5. The automatic plastic bag packaging device according to claim 1, characterized in that: The plastic bag folding mechanism comprises: a supporting panel, a lower clamping plate assembly, an upper clamping plate assembly, a first driving device, a second driving device and a third driving device; in an initial state, the lower clamping plate assembly, the supporting panel and the packaging station are sequentially arranged along the conveying direction of the plastic bag finished product, and the lower clamping plate assembly comprises two independently arranged lower clamping plates; the upper clamping plate assembly is arranged just above the lower clamping plate assembly, and the upper clamping plate assembly comprises two independently arranged upper clamping plates; the first driving device is connected to the upper clamping plate assembly, and the first driving device is used to drive the two upper clamping plates to move horizontally relative to their corresponding lower clamping plates synchronously to the top of the lower clamping plate and then to perform a vertical downward movement to clamp the plastic bag finished product and to drive the two upper clamping plates to move vertically relative to their corresponding lower clamping plates and then to move horizontally away from the top of the lower clamping plate; the second driving device is connected to the supporting panel, and is used to drive the supporting panel to perform vertical lifting movement; the two upper clamping plates, the two lower clamping plates and the supporting panel together constitute the folding station, and the upper surfaces of the two lower clamping plates and the supporting panel together form a The two upper clamping plates can be driven by the first driving device to descend to cooperate with their respective corresponding lower clamping plates to form a clamping state respectively; the positions of the two lower clamping plates and the two upper clamping plates correspond to the areas where the two lifting ears of the plastic bag are located; the supporting panel is configured so that when the plastic bag is located in the folding station, its descending movement can cause the part of the plastic bag that is not clamped by the lower clamping plate assembly and the lower clamping plate assembly to droop; the third driving device is configured to drive the lower clamping plate assembly and the upper clamping plate assembly to fold The clamping plate assembly carries the finished plastic bag and moves toward the packaging station along the conveying direction to realize packaging. The plate body of the packaging station is located in front of the folding station and the space above it is unobstructed, so that when the clamping plate assembly carrying the finished plastic bag with preliminary folding moves toward the packaging station, the hanging part of the finished plastic bag can contact and be restrained by the upper surface of the plate body of the packaging station; the third driving device is further configured to carry the finished plastic bag wrapped in the packaging bag and move along the conveying direction until the bottom of the packaging bag protrudes from the rear side edge of the plate body of the packaging station after packaging is completed; Wherein, the third driving device, the lower clamping plate assembly and the upper clamping plate assembly are used as the plastic bag transferring device.

6. The automatic plastic bag packaging device according to claim 1, characterized in that: Also includes: A waste material unloading conveyor belt is arranged behind the ear punching station of the ear punching mechanism and is used to convey and remove the waste material generated by the ear punching mechanism; visor; a horizontal movement driving device, connected to the shielding plate, for driving the shielding plate to move back and forth in a horizontal direction; The shielding plate is configured to: when in a normal position, be away from the upper area of ​​the waste unloading conveyor belt; when in a working position, move to and cover the upper area of ​​the waste unloading conveyor belt; The horizontal movement drive device is configured to drive the shielding plate from a normal position to a working position before the plastic bag blank is transported and is about to pass over the waste material unloading conveyor belt, so as to provide covering protection when the plastic bag blank passes.

7. The automatic plastic bag packaging device according to claim 6, characterized in that: A plurality of holes are evenly arranged on the shielding plate.

8. The automatic plastic bag packaging device according to claim 1, characterized in that: The plastic sealing mechanism includes: a resistance bar fixedly arranged at the bottom of the plastic sealing station, the upper surface of which directly constitutes the plastic sealing heating contact surface; A pressing plate is arranged directly above the plastic sealing station; A pressing plate driving device is connected to the pressing plate and is used to drive the pressing plate to vertically rise and fall.

9. The automatic plastic bag packaging device according to claim 1, characterized in that: The plastic bag transfer device includes a first clamping jaw assembly and a second clamping jaw assembly. The first clamping jaw assembly is configured to: transfer the stacked plastic bag blanks to the ear punching station of the ear punching mechanism; transfer the stacked plastic bag finished products to the folding station of the plastic bag folding mechanism; the second clamping jaw assembly is configured to: transfer the packaging bag containing the plastic bag finished products to the plastic sealing station of the plastic sealing mechanism; the first clamping jaw assembly includes a plurality of first clamping jaws; the second clamping jaw assembly includes a plurality of second clamping jaws; the spacing between the plurality of first clamping jaws is adjustable; the spacing between the plurality of second clamping jaws is adjustable; the plurality of clamping jaws in the first clamping jaw assembly and the second clamping jaw assembly are configured to: adapt to plastic bags or packaging bags of different widths by adjusting their spacing and achieve uniform gripping.

10. The automatic plastic bag packaging device according to claim 1, characterized in that: The utility model further comprises a bagging device, wherein the bagging device is used for stacking a specific number of plastic bag blanks.

Images