CN111605805B

CN111605805B - Mouth opening device for plastic packaging

Info

Publication number: CN111605805B
Application number: CN202010427521.0A
Authority: CN
Inventors: 莫志权
Original assignee: Shenzhen Youbang Plastic Printing Packaging Co ltd
Current assignee: Shenzhen Youbang Plastic Printing Packaging Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-07-13
Anticipated expiration: 2040-05-19
Also published as: CN111605805A

Abstract

The invention discloses an opening part spreading device for plastic packaging, which comprises a base, wherein a side plate is connected onto the base, an installation roller is rotatably connected onto the side plate, a clamping device is arranged on the installation roller, and a spreading mechanism which is used for tearing in advance and spreading the opening of a single plastic bag is also arranged between the base and the side plate.

Description

Mouth opening device for plastic packaging

Technical Field

The invention relates to the technical field of plastic bags, in particular to an opening device for plastic packaging.

Background

The plastic bag has wide application in families, is used for containing garbage and packaging various dry and fresh living goods and materials, and therefore has large consumption. The plastic bags supplied in bulk in the market at present are not generally packaged but sold in bundles, which brings inconvenience to the storage and use of people, in order to bring convenience to people, plastic bag manufacturers begin to package and sell the bundled plastic bags, the packaging bags for packaging the plastic bags are similar to envelopes in structure and are processed by transparent plastic packaging films, three sides are sealed, one side without sealing is an opening of the packaging bag, the plastic bags are loaded from the opening, the packaging plastic bags are mostly adopted in the current supermarket, and customers take and select commodities.

But this packaging plastic bag end to end rolls into a bundle, and single tearing when using, the oral area of the single packaging plastic bag is difficult for opening after tearing, need make a round trip to rub a lot of times sometimes and just can open, inconvenient use, be more not convenient for open to the old person, and to some vendors who are equally suitable for using this packing, can waste a lot of time because of opening the oral area of plastic bag when the people are many, and when tearing single plastic bag, still probably tear the plastic bag because of having certain width. To this end, we propose a mouth-opening device for plastic packages.

Disclosure of Invention

The present invention is directed to a mouth-opening device for plastic packaging, which can open and knead a plastic bag, and solves the problems of the related art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a mouth part struts device for plastic packaging, includes the base, be connected with the curb plate on the base, it is connected with the installation roller to rotate on the curb plate, be provided with the screens ware on the installation roller, just still be provided with between base and the curb plate and tear in advance and strut single plastic bag open-ended mechanism of strutting.

Preferably, the strutting mechanism comprises a driving gear fixedly connected to the installation roller, the base is provided with a differential twisting and opening device connected with the driving gear, the base is further provided with a tearing device for tearing the easy-to-tear opening of the plastic bag, and the driving gear is a separating point to separate the two actions.

Preferably, the differential opening device comprises an indirect jacking device which is arranged on the base and connected with the driving gear, the side plate is further provided with a speed-increasing kneading device which is connected with the driving gear, and the degradation jacking device is convenient for indirect opening.

Preferably, the indirect jacking device comprises a first rack slidably connected to the base, a first spring is connected between the first rack and the base, a first rotating shaft is rotatably connected to the side plate, a driven gear engaged with the driving gear is fixedly connected to the first rotating shaft, a first half-range gear engaged with the first rack is also fixedly connected to the first rotating shaft, a second rack is fixedly connected to the first rack, an installation block is fixedly connected to the base, a guide cylinder is connected to the installation block, a first threaded sleeve is slidably connected to the guide cylinder, a first lead screw in threaded connection with the first threaded sleeve is rotatably connected to the installation block, a first driving gear engaged with the second rack is connected to the bottom of the first lead screw, a mounting seat is connected to one end of the first threaded sleeve, and a first rolling device is arranged on the mounting seat, the indirect action is realized through the first half gear, and the use is convenient.

Preferably, the speed-increasing kneading device comprises a second rotating shaft which is rotatably connected to the side plate, a speed-increasing gear is connected to the second rotating shaft, a second rolling device is further connected to the side plate, a first synchronous belt is arranged between the second rolling device and the second rotating shaft, and the speed-increasing gear realizes differential motion, so that the kneading and the separating are facilitated.

Preferably, tearing device is including rotating the second lead screw of connecting on the curb plate, be connected with the fixing base that rotates installation second lead screw on the base, threaded connection has the second thread bush on the second lead screw, just sliding connection cutter in the fixing base, the bottom of cutter is connected with the voussoir with second thread bush sliding connection, it is connected with first grip roller and second grip roller to rotate between curb plate and the fixing base, still be connected with the baffle between curb plate and the fixing base, still be provided with delay mechanism between second lead screw and the curb plate.

Preferably, delay mechanism includes the third pivot of being connected with the curb plate rotation, be connected with the second half gear of being connected with first rack toothing in the third pivot, just be connected with the second hold-in range between third pivot and the first pivot, the one end of second lead screw is connected with the second drive gear delay mechanism of being connected with first rack toothing and is convenient for realize the precedence of two actions.

Preferably, a plurality of groups of sliding cylinders are connected to the mounting block, and the bottom of the mounting seat is connected with a guide post which is in sliding connection with the sliding cylinders, so that the mounting seat can move more stably.

Preferably, a second spring is connected between the cutter and the fixed seat, so that the cutter is convenient to reset.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, one side of the plastic bag is firstly convenient to tear and rub open through the arranged opening mechanism, and then the easy-to-tear line is cut for the second time, so that the plastic bag is conveniently torn off, and the rubbed-off part is still in an open state, so that the plastic bag does not need to be rubbed back and forth manually, the time is saved, the plastic bag is prevented from being torn, and the plastic bag is more convenient for a user to use.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the entire structure with a side plate removed;

FIG. 3 is a schematic view of the overall structure of the differential speed opening device and the tearing device;

FIG. 4 is a schematic structural view of the differential opening twisting device;

FIG. 5 is a schematic view of the structure of the area A in FIG. 4;

FIG. 6 is a schematic view showing the structure of the tearing device;

FIG. 7 is a schematic diagram of the structure of the area B in FIG. 6;

FIG. 8 is an expanded view of the rack and pinion arrangement at the side panel;

fig. 9 is a schematic structural view of the retainer.

In the figure: 1-a base; 2-side plate; 3, mounting a roller; 4-a clamping device; 5-a distraction mechanism; 6-a driving gear; 7-differential twisting-off device; 8-a tearing device; 9-an indirect jacking device; 10-speed-up kneading device; 11-a first rack; 12-a first spring; 13-a first shaft; 14-a driven gear; 15-first half gear; 16-a second rack; 17-a mounting block; 18-a guide cylinder; 19-a first threaded sleeve; 20-a first lead screw; 21-a first drive gear; 22-a mounting seat; 23-a first roller; 24-a second shaft; 25-speed up gear; 26-a second roller; 27-a first synchronization belt; 28-a second lead screw; 29-a fixed seat; 30-a second threaded sleeve; 31-a cutter; 32-wedge block; 33-a first nip roller; 34-a second nip roller; 35-a baffle; 36-a delay mechanism; 37-a third shaft; 38-second half gear; 39-a second synchronous belt; 40-a second drive gear; 41-a slide cylinder; 42-guide posts; 43-a second spring; 44-a retaining ring; 45-conical blocks; 46-third spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: an opening device for plastic packaging comprises a base 1, wherein a side plate 2 is connected to the base 1, an installation roller 3 is connected to the side plate 2 in a rotating mode, a clamping device 4 is arranged on the installation roller 3 and used for clamping the shaft portion of a bundle of plastic bags, linkage is achieved through rotation of shafts of the plastic bags, the clamping device 4 comprises a fixing ring 44 fixed on the installation roller 3, multiple groups of conical blocks 45 are connected to the fixing ring 44 in a sliding mode, multiple groups of third springs 46 are connected between the conical blocks 45 and the fixing ring 44, conical surfaces on the conical blocks 45 are convenient for installing the shafts of the plastic bags and clamping, the installation roller 3 is divided into two sections, one section can be detached to replace the plastic bags conveniently, an opening mechanism 5 which is used for tearing in advance and opening a single plastic bag is further arranged between the base 1 and the side plate 2, the opening mechanism 5 comprises a driving gear 6 fixedly connected to the installation roller 3, be provided with on the base 1 and rub opening device 7 with the differential of being connected with driving gear 6, opening device 7 can produce the differential contact removal on the upper and lower face of plastic bag with the differential to make the pocket rubbed open, just still be provided with tear device 8 to tearing the easy mouth of tearing of plastic bag on the base 1, tear device 8 cuts the most of easy mouth of tearing, tears the plastic bag when preventing to tear.

Wherein, the differential opening twisting device 7 comprises an indirect jacking device 9 arranged on the base 1 and connected with the driving gear 6, and the side plate 2 is further provided with a speed-increasing twisting device 10 connected with the driving gear 6, because only the position of the easy-to-tear opening is required to be twisted so as to open the opening, only a small distance is required, so the indirect jacking device 9 only carries out jacking work when twisting is required, the indirect jacking device 9 comprises a first rack 11 connected on the base 1 in a sliding way, a first spring 12 is connected between the first rack 11 and the base 1, the first spring 12 is convenient for resetting the first rack 11, the side plate 2 is rotatably connected with a first rotating shaft 13, the first rotating shaft 13 is fixedly connected with a driven gear 14 meshed and connected with the driving gear 6, the driven gear 14 mainly plays a role of keeping synchronous rotation, and the first rotating shaft 13 is further fixedly connected with a first half-range gear 15 meshed and connected with the first rack 11, because the driven gear 14 rotates synchronously, the first half gear 15 rotates, the first half gear 15 is composed of a disk and a certain number of gear teeth, so as to realize indirect movement, that is, only when the teeth on the first half gear 15 are meshed with the first rack 11, the first rack 11 is driven to move, the first rack 11 is fixedly connected with the second rack 16, the first rack 11 is driven to move, the base 1 is fixedly connected with the mounting block 17, the mounting block 17 is connected with the guide cylinder 18, the guide cylinder 18 is connected with the first thread sleeve 19 in a sliding way, the mounting block 17 is rotatably connected with the first lead screw 20 in threaded connection with the first thread sleeve 19, the first thread sleeve 19 is lifted by the rotation of the first lead screw 20, the bottom of the first lead screw 20 is connected with the first driving gear 21 in meshed connection with the second rack 16, the rotation of the first screw 20 is driven by the second rack 16, one end of the first thread bushing 19 is connected with a mounting seat 22, the mounting seat 22 is provided with a first rolling device 23, so that the mounting seat 22 can indirectly lift up along with the indirect movement of the first rack 11, the first rolling device 23 mainly plays a supporting role, and the top can rotate during supporting, in the scheme, a waist-shaped belt is connected between the two drives to support and rotate, the speed-increasing kneading device 10 comprises a second rotating shaft 24 which is rotatably connected to a side plate 2, the second rotating shaft 24 is connected with a speed-increasing gear 25, the reference circle diameter of the speed-increasing gear 25 is smaller than that of the driving gear 6, so that the rotating speed of the speed-increasing gear 25 is larger than that of the driving gear 6, the side plate 2 is also connected with a second rolling device 26, and a first synchronous belt 27 is arranged between the second rolling device 26 and the second rotating shaft 24, because of the effect of the first synchronous belt 27, the linear velocity of the single point generated by the second rolling device 26 is greater than the linear velocity of the pulled plastic bag, so as to generate relative sliding, the structure of the second rolling device 26 is the same as that of the first rolling device 23, and the synchronous rotation with the second rotating shaft 24 is realized through the first synchronous belt 27 on one of the driving shafts, because the two belt-shaped belts are positioned on the upper and lower surfaces of the plastic bag, and the belt-shaped belt at the bottom is tightly attached to the belt-shaped belt at the top, while the belt-shaped belt at the top is different from the linear velocity of the plastic bag, and the plastic bag is slower, so that the plastic bag is pulled by a single surface, and the outlet is pulled to cause the easy-to-tear opening to be torn.

In addition, the tearing device 8 comprises a second screw rod 28 rotatably connected to the side plate 2, a fixed seat 29 rotatably mounted with the second screw rod 28 is connected to the base 1, a second thread bushing 30 is connected to the second screw rod 28 in a threaded manner, a cutter 31 is slidably connected to the fixed seat 29, a wedge 32 slidably connected with the second thread bushing 30 is connected to the bottom of the cutter 31, the second thread bushing 30 is driven to move by the rotation of the second screw rod 28, so that the wedge 32 is pushed, the wedge 32 is pushed to enable the cutter 31 to ascend, an easy-to-tear opening of the plastic bag is cut, a first clamping roller 33 and a second clamping roller 34 are rotatably connected between the side plate 2 and the fixed seat 29, the plastic bag is clamped by the two clamping rollers, the end part on the plastic bag bundle is prevented from dropping after the plastic bag is cut, so that subsequent use is inconvenient, a baffle 35 is further connected between the side plate 2 and the fixed seat 29, because the single side of the cutter 31 is not convenient for cutting the easy-to-tear opening of the plastic bag, the baffle 35 is arranged for cutting, the cutter 31 mainly comprises the movable plate and the contact pins arranged on the movable plate, because the plastic bag is not convenient for cutting by using knives, the thinner contact pins are arranged much, so that more small holes are formed in the belt connected between the easy-to-tear openings, the plastic bag can be pulled down by slight pulling, the opening part of the plastic bag is not broken, the cutter 31 comprises two ends, namely a slight uncut part is reserved in the middle, so that the subsequent plastic bag can be pulled out conveniently, the delay mechanism 36 is arranged between the second screw rod 28 and the side plate 2, because the plastic bag is not synchronously torn and the opening is not rubbed, the tearing action is required to be arranged after the opening action, and therefore, the delay is realized by the delay mechanism 36.

The delay mechanism 36 includes a third rotating shaft 37 rotatably connected to the side plate 2, the third rotating shaft 37 is connected to a second half gear 38 engaged with the first rack 11, the second half gear 38 has the same structure as the first half gear 15, and mainly performs indirect action, but the time for engaging the teeth of the second half gear 38 and the teeth of the first half gear 15 with the first rack 11 is different, when the engagement of the first half gear 15 with the first rack 11 is finished, the second half gear 38 starts to engage, so that the first rack 11 still continues to slide without returning, a second timing belt 39 is connected between the third rotating shaft 37 and the first rotating shaft 13, the second timing belt 39 mainly achieves synchronization between the second half gear 38 and the pulling action of the plastic bag, one end of the second lead screw 28 is connected to a second driving gear 40 engaged with the first rack 11, during the movement of the first rack 11, a certain idle stroke is left between the second threaded sleeve 30 and the wedge 32, so that the matching relationship between the gears and the screw rod is set, the cutting action of the cutter 31 can be performed after the opening action, namely the position of the easy-to-tear line reaches the position of the cutter 31, and after the cutting action is completed, namely the engagement stroke between the second half-way gear 38 and the first rack 11 is about to be completed, the plastic bag has certain inertia due to the continuous action during the tearing of the plastic bag, so that the plastic bag has a certain moving distance when the cutter 31 cuts off, and the plastic bag is prepared for the next round because the connection between the two plastic bags also has a certain width, so that the stroke of the second half-way gear 38 is completed, and the first rack 11 is reset under the action of the first spring 12.

The installation block 17 is connected with a plurality of sets of sliding barrels 41, the bottom of the installation seat 22 is connected with a guide post 42 which is connected with the sliding barrel 41 in a sliding manner, the plurality of sets of guide posts 42 and the sliding barrel 41 slide to enable the installation seat 22 to ascend stably, and a second spring 43 is connected between the cutter 31 and the fixed seat 29, so that the second screw rod 28 drives the second threaded sleeve 30 to reset when the first rack 11 resets, the cutter 31 also resets under the action of gravity, but cannot guarantee to slide down, and therefore the resetting is facilitated through the second spring 43.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a mouth strutting arrangement for plastic packaging, includes base (1), its characterized in that: the plastic bag opening device is characterized in that a side plate (2) is connected onto a base (1), an installation roller (3) is rotatably connected onto the side plate (2), a clamping device (4) is arranged on the installation roller (3), a spreading mechanism (5) which is used for tearing in advance and spreading an opening of a single plastic bag is further arranged between the base (1) and the side plate (2), the spreading mechanism (5) comprises a driving gear (6) fixedly connected onto the installation roller (3), a differential twisting device (7) connected with the driving gear (6) is arranged on the base (1), a tearing device (8) which is used for tearing an easy-to-tear opening of the plastic bag is further arranged on the base (1), the differential twisting device (7) comprises an indirect jacking device (9) which is arranged on the base (1) and connected with the driving gear (6), and a speed-raising and kneading device (10) connected with the driving gear (6) is further arranged on the side plate (2), the indirect jacking device (9) comprises a first rack (11) which is connected to a base (1) in a sliding manner, a first spring (12) is connected between the first rack (11) and the base (1), a first rotating shaft (13) is connected to the side plate (2) in a rotating manner, a driven gear (14) which is connected with a driving gear (6) in a meshing manner is fixedly connected to the first rotating shaft (13), a first half-stroke gear (15) which is connected with the first rack (11) in a meshing manner is also fixedly connected to the first rotating shaft (13), a second rack (16) is fixedly connected to the first rack (11), a mounting block (17) is fixedly connected to the base (1), a guide cylinder (18) is connected to the mounting block (17), a first thread sleeve (19) is connected to the guide cylinder (18) in a sliding manner, a first lead screw (20) which is connected with the first thread sleeve (19) in a rotating manner is connected to the mounting block (17), the bottom of the first screw rod (20) is connected with a first driving gear (21) meshed with the second rack (16), one end of the first threaded sleeve (19) is connected with a mounting seat (22), and a first rolling device (23) is arranged on the mounting seat (22).

2. An opening-spreading device for plastic packages according to claim 1, wherein: the speed-increasing kneading device (10) comprises a second rotating shaft (24) which is rotatably connected to the side plate (2), a speed-increasing gear (25) is connected to the second rotating shaft (24), a second rolling device (26) is further connected to the side plate (2), and a first synchronous belt (27) is arranged between the second rolling device (26) and the second rotating shaft (24).

3. An opening-spreading device for plastic packages according to claim 2, wherein: tearing device (8) are including rotating second lead screw (28) of connecting on curb plate (2), be connected with on base (1) and rotate fixing base (29) of installation second lead screw (28), threaded connection has second thread bush (30) on second lead screw (28), just sliding connection cutter (31) in fixing base (29), the bottom of cutter (31) is connected with voussoir (32) with second thread bush (30) sliding connection, it is connected with first grip roller (33) and second grip roller (34) to rotate between curb plate (2) and fixing base (29), still be connected with baffle (35) between curb plate (2) and fixing base (29), still be provided with delay mechanism (36) between second lead screw (28) and curb plate (2).

4. An opening-spreading device for plastic packages according to claim 3, wherein: delay mechanism (36) include rotate third pivot (37) of being connected with curb plate (2), be connected with second half range gear (38) of being connected with first rack (11) meshing on third pivot (37), just be connected with second hold-in range (39) between third pivot (37) and first pivot (13), the one end of second lead screw (28) is connected with second drive gear (40) of being connected with first rack (11) meshing.

5. An opening-spreading device for plastic packages according to claim 1, wherein: the mounting block (17) is connected with a plurality of groups of sliding cylinders (41), and the bottom of the mounting seat (22) is connected with a guide post (42) which is connected with the sliding cylinders (41) in a sliding manner.

6. An opening-spreading device for plastic packages according to claim 3, wherein: and a second spring (43) is also connected between the cutter (31) and the fixed seat (29).