Cigarette packet folding and drying device for No.3 wheel of ZB28 packaging machine

Abstract

The utility model discloses a ZB28 packaging machine third wheel tobacco bale folding and drying device which is arranged on a third wheel of a ZB28 packaging machine, 36 tobacco bale mold boxes are arranged on the circumference of a third wheel frame of the third wheel, the third wheel frame rotates along the axis of the third wheel when working, and a label paper folding device and a tobacco bale drying device are fixedly installed behind the third wheel frame. A fan-shaped piece is fixedly arranged on the rear side of the wheel frame of the third wheel, a plurality of comb-tooth-shaped blocking pieces arranged in an arc shape are arranged on the fan-shaped piece, and one blocking piece is arranged right behind each tobacco bale mold box. After the cigarette packet enters the cigarette packet mold box, the separation blade is located at the tail of the cigarette packet, and the length of the separation blade covering the cigarette packet does not exceed the folding length of label paper at the tail of the cigarette packet; a heater of the tobacco bale drying device is fixed on a support behind a wheel frame of a third wheel, the heating surface of the heater is close to the rear side of the wheel frame of the third wheel, a step-shaped arc-shaped blocking piece channel is arranged on the heating surface of the heater and the edge of an inner arc surface, and the top of a blocking piece between the wheel frame of the third wheel and the heater is located in the blocking piece channel.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette packet folding and drying, in particular to a cigarette packet folding and drying device for the third wheel of a ZB28 packaging machine. Background Technique

[0002] The ZB28 soft-packaging machine functions to orient 20 cigarettes into a cigarette group in the cigarette inlet channel according to 767. The cigarette group is conveyed to the first wheel through a cigarette packet conveyor belt, and then on the second to fourth wheels, the folding and packaging of the inner lining paper, trademark paper, and sealing label are completed respectively. Finally, the cigarette packets are dried, output, and unqualified cigarette packets are removed in the cigarette packet output channel, and the cigarette packets are conveyed to the downstream machine for transparent paper packaging of the small boxes.

[0003] On the third wheel, as Figures 1-5 shown, the folding of the trademark paper of the cigarette packet and the heating and drying of the bottom are completed. The bottom heater part of this set of devices removes the original electromagnetic heater and the accompanying strip for blocking paper, and installs a common heater 41 (temperature measurement is carried out by a platinum resistance, an external temperature controller, and a solid-state relay for temperature measurement and heating). The heater 41 directly contacts the glue application position at the bottom of the trademark for heating and drying. A gasket is installed on the back of the heater 41, and gaskets with different thicknesses are provided to adjust the distance between the working surface of the heater 41 and the bottom of the cigarette packet to be dried. In front of the heater 41, as Figure 1 、 4 shown, a turret cigarette packet die box 21 is installed, which is used to receive the cigarette packets transferred from the second wheel, a total of 36. During the receiving process, the short-side first corner folder 31 folds one corner of the cigarette packet 5. Between the cigarette packet die box 21 and the heater 41, a sector piece 22 and a sector piece pressing strip 24 are installed. During the folding, drying, and transfer processes of the third wheel, they play a role in maintaining and supporting the folded corners at the bottom of the cigarette packet.

[0004] The working mode of the third wheel: as Figure 3 shown, the third wheel 1 rotates intermittently in the counterclockwise direction, and there are 36 formed cigarette packet die boxes 21 on it, mainly completing the folding of the trademark paper and the bottom drying of the formed cigarette packet 5. At the 1st station, the trademark paper is pushed into the third-wheel frame 2 along with the inner-lining paper cigarette packet 5. At the 19th station, the qualified formed cigarette packet 5 is pushed out. When the machine stops for a long time, due to the drying of the glue solution on the trademark paper and the detection of unqualified cigarette packets 5, at this time, the push rod for pushing out the cigarette packet 5 does not act. When the unqualified cigarette packet reaches the 24th station, the unqualified cigarette packet 5 is removed by the rejection push rod.

[0005] However, in actual production, the ZB28 packaging equipment has relatively high requirements for the bonding performance of the trademark and latex. Especially when producing brands with laser films on the trademark, it is more obvious that during operation, the bottom of the trademark is not firmly pasted and there are many waste cigarettes with decolorization, as Figure 4 、 Figure 5As shown in the figure. It is observed that the problem of poor adhesion and decolorization at the bottom of the cigarette pack is mainly caused by the deformation of the supporting fan-shaped sheet. For a long time, the poor adhesion and decolorization at the bottom have seriously affected the effective operation rate of the equipment and the stability of product quality.

[0006] During the production process of ZB28, due to problems with auxiliary materials, accumulated glue on the equipment, and inadequate maintenance, the situation of poor trademark paper occurs frequently. When a cigarette pack with poor trademark wrapping is pushed by a push rod into the third wheel, it causes a blockage of the cigarette pack, resulting in the deformation of the fan-shaped sheet that supports the bottom of the cigarette pack. During the rotation of the deformed fan-shaped sheet, problems such as poor adhesion at the bottom of the cigarette pack, decolorization at the bottom, and interference with the surface of the heater will occur. When these problems occur, it is necessary to check each of the 36 fan-shaped sheets one by one to find the deformed fan-shaped sheet. After finding it, it is inconvenient to carry out effective straightening on the equipment, and the steel sheet needs to be removed for treatment. Usually, only by directly replacing the fan-shaped sheet accessories can the problem be solved. This seriously affects the effective operation rate of the equipment and the stability of product quality, with a relatively high rejection rate and high accessory costs.

[0007] In the cigarette pack folding and drying device of the existing cigarette packaging machine, such as the Chinese utility model patent with the patent number CN201320350029.3 discloses a heating sheet for drying glue on a cigarette pack and a cigarette pack glue drying device. For the heating sheet for drying glue on a cigarette pack, a heating plane is provided on the heating sheet, and the shapes and areas of the heating plane and the gluing area on the cigarette pack for bonding the wrapping paper are the same. This patent also has the following defects: 1. The heater of this device is an electromagnetic heater. Since the temperature of the retaining strip controlled by the electromagnetic heater is not accurate and stable enough, and the heating area is small, there are many defective cigarette packs such as poor adhesion at the bottom of the cigarette pack and decolorization at the bottom of the trademark when the equipment is running at high speed. To ensure product quality, only the vehicle speed and the temperature of the heater can be reduced, which seriously affects the effective operation rate of the equipment; 2. The fan-shaped sheet supporting the cigarette pack is relatively long and is prone to deformation. During the rotation of the deformed fan-shaped sheet, problems such as poor adhesion at the bottom of the cigarette pack, decolorization at the bottom, and interference with the surface of the heater will occur. Summary of the Invention

[0008] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide a cigarette pack folding and drying device for the third wheel of a ZB28 packaging machine.

[0009] The present utility model is realized through the following technical solutions:

[0010] A cigarette pack folding and drying device for the third wheel of a ZB28 packaging machine is arranged on the third wheel 1 of the ZB28 packaging machine, and includes a third wheel frame 2. A plurality of cigarette pack mold boxes 21 are arranged on the circumference of the third wheel frame 2. When the third wheel frame 2 works, it rotates along the axis of the third wheel 1. A trademark paper folding device 3 and a cigarette pack drying device 4 are fixedly arranged behind the third wheel frame 2;

[0011] A sector piece 22 is fixedly arranged at the rear side of the third wheel rim 2. Comb-shaped baffles 23 are arranged on the sector piece 22 in an arc-shaped arrangement. The number of the baffles 23 on the sector piece 22 is adapted to the number of the cigarette packet mould boxes 21 on the third wheel rim 2. A baffle 23 is arranged directly behind each cigarette packet mould box 21. After the cigarette packet 5 enters the cigarette packet mould box 21, the baffle 23 is located at the tail of the cigarette packet 5, and the length of the baffle 23 covering the cigarette packet 5 is adapted to the length of the folding of the trademark paper at the tail of the cigarette packet 5.

[0012] The cigarette packet drying device 4 is provided with a heater 41. The heater 41 is fixed on the bracket behind the third wheel rim 2. The heating surface of the heater 41 is close to the rear side of the third wheel rim 2. A stepped arc-shaped baffle channel 42 is arranged on the heating surface of the heater 41 and the inner arc surface edge. The top of the baffle 23 between the third wheel rim 2 and the heater 41 is located in the baffle channel 42.

[0013] Furthermore, the trademark paper folding device 3 is provided with a short-side first folding corner device 31. The short-side first folding corner device 31 is arranged between the No. 1 station of the third wheel rim 2 and the second wheel. The distance between the tail of the short-side first folding corner device 31 and the top of the baffle 23 is less than the length of the folding of the trademark paper at the tail of the cigarette packet 5.

[0014] Furthermore, the front end surface of the short-side first folding corner device 31 is in front of the contact surface of the baffle 23 with the cigarette packet 5.

[0015] Furthermore, the width of the baffle 23 is less than the thickness of the cigarette packet 5, and the top of the baffle 23 is of a triangular structure.

[0016] Furthermore, the heating surface of the heater 41 and the side surface of the baffle 23 contacting the cigarette packet 5 are located on the same plane.

[0017] Furthermore, the baffle channel 42, the sector piece 22 and the third wheel rim 2 are coaxial, and the radius of the outermost side of the arc-shaped baffle channel 42 is greater than the distance from the top of the baffle 23 to the rotation axis of the third wheel rim 2.

[0018] Furthermore, the depth of the baffle channel 42 on the heater 41 is greater than the thickness of the baffle 23.

[0019] The working principle of the utility model:

[0020] The utility model device shortens the length of the baffle 23 on the fan-shaped sheet 22, so that it is not easy to bend due to the size effect, and the baffle 23 is not easy to deform while ensuring that the first folding angle c is folded and maintained; a step-shaped baffle channel 42 is opened between the heating surface of the heater 41 and the edge of the inner arc surface, so that the baffle 23 is located in the baffle channel 42 when it rotates to the area covered by the heater 41, and the heater 41 is adjusted so that the heating surface and the front of the baffle 23 are located in the same plane; the baffle 23 follows the rotation of the third wheel frame 2, supporting the first folding angle c at the bottom of the cigarette pack 5 to pass through the baffle channel 42, and the heating surface of the heater 41 is close to the bottom of the cigarette pack 5 to dry the adhesive at the bottom of the cigarette pack 5 during the process of the baffle 23 passing through the baffle channel 42. Because the length of the baffle 23 is shortened, the gap between the baffle 23 and the original short-side first angler 31 is increased. By lengthening the length of the short-side first angler 31, the length of the improved baffle 23 is adapted, and the gap between the short-side first angler 31 and the baffle 23 is shortened.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. The length of the baffle 23 on the original sector piece 22 is shortened, and the baffle 23 only covers a corner of the tail of the cigarette pack 5. While retaining the guiding and supporting function of the baffle 23 on the bottom of the cigarette pack 5, the short baffle 23 is not easy to deform. The number of cigarette packs with loose bottom adhesion and discoloration caused by the deformation of the sector piece 22 is effectively reduced, the product quality is improved, and the scrap rate is greatly reduced; the service life of the sector piece is extended, the production time loss caused by replacing the steel sheet is reduced, and the labor intensity of production and repair personnel is reduced.

[0023] 2. A groove is made on the original flat plate heater 41 to form a baffle channel 42 to ensure that the working surface of the heater 41 and the working surface of the baffle 23 are in the same plane after installation. The working surface of the heater 41 directly contacts the glue area of ​​the trademark paper at the bottom of the cigarette pack 5, thereby improving the drying effect, further reducing the production of cigarette packs with loose bottom adhesion, and reducing the scrap rate.

[0024] 3. The original short side first angler 31 is lengthened so that the cigarette pack 5 can be effectively escorted to the baffle 23 of the short fan-shaped piece 22 during operation, thereby ensuring the shaping of the bottom of the cigarette pack 5 during the pushing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the third wheel of the ZB28 packaging machine in the prior art;

[0026] Figure 2 It is a schematic diagram of the workstations of the second and third wheels of the ZB28 packaging machine in the prior art;

[0027] Figure 3 It is a schematic diagram of the steps and workstations of folding the trademark paper of the No. 3 wheel in the prior art;

[0028] Figure 4 is an exploded view of the No. 3 wheel rim and the heater in the prior art;

[0029] Figure 5 is a usage state diagram of the No. 3 wheel rim in the prior art;

[0030] Figure 6 is a three-dimensional structural schematic diagram of the rear view of the No. 3 wheel of the present invention;

[0031] Figure 7 is an exploded view of the No. 3 wheel rim and the heater of the present invention;

[0032] Figure 8 is a usage state diagram of the No. 3 wheel rim of the present invention;

[0033] Figure 9 is a cross-sectional view of the No. 3 wheel rim and the heater of the present invention;

[0034] Figure 10 is a front view of the positional relationship between the heater and the fan-shaped piece of the present invention.

[0035] Reference numerals in the figure:

[0036] 1 - No. 3 wheel;

[0037] 2 - No. 3 wheel rim, 21 - cigarette pack die box, 22 - fan-shaped piece, 23 - retaining piece, 24 - pressing strip;

[0038] 3 - trademark paper folding device, 31 - first corner folder;

[0039] 4 - cigarette pack drying device, 41 - heater, 42 - retaining piece channel;

[0040] 5 - cigarette pack. Detailed implementation manners

[0041] In order to enable those skilled in the art of the present technology to better understand the technical solution of the present invention, the following will make a detailed description of its specific implementation manners in conjunction with the accompanying drawings.

[0042] As Figures 1-10 shown, a cigarette pack folding and drying device for the No. 3 wheel of a ZB28 packaging machine is arranged on the No. 3 wheel 1 of the ZB28 packaging machine. A No. 3 wheel rim 2 is arranged on the No. 3 wheel 1 of the ZB28 packaging machine. 36 cigarette pack die boxes 21 are arranged on the circumference of the No. 3 wheel rim 2. A trademark paper folding device 3 and a cigarette pack drying device 4 are fixedly installed behind the No. 3 wheel rim 2; a fan-shaped piece 22 is fixedly arranged at the rear side of the No. 3 wheel rim 2. The short-side first corner folder 31 of the trademark paper folding device 3 is fixedly installed on the No. 3 wheel rim 2 behind the 1st working position; the heater 41 of the cigarette pack drying device 4 is fixed on the bracket behind the No. 3 wheel rim 2.

[0043] As Figure 4 , 5 shown, there are 36 comb-shaped baffles 23 arranged in an arc on the original sector piece 22, and one baffle 23 is correspondingly arranged behind each cigarette pack mold box 21; after the cigarette pack 5 enters the cigarette pack mold box 21, the baffle 23 is located at the tail of the cigarette pack 5. The length of the baffle 23 on the sector piece 22 is relatively long, and the length covering the tail of the cigarette pack exceeds two-thirds of the width of the cigarette pack. The sector piece is prone to deformation and bending, seriously affecting the effective operation rate of the equipment and the stability of product quality, and the rejection rate is relatively high.

[0044] In the embodiment, as Figure 6 , 7 , 8 shown, the length of the baffle 23 of the modified sector piece 22 is relatively short, and the top of the baffle 23 is triangular. The specific dimensions need to match the dimensions after the bottom of the cigarette pack 5 is folded. Its range of action only reaches the triangular area exposed after the bottom of the cigarette pack 5 is folded; the shorter length is not easily deformed by being squeezed by unqualified cigarette packs.

[0045] The length of the short-side first corner folder 31 in the original label paper folding device 3 is relatively short and is used to cooperate with the original long sector piece 21.

[0046] In the embodiment, as Figure 6 shown, the dimensions at the trapezoidal head of the modified short-side first corner folder 31 remain unchanged, and the rectangular area is lengthened so that the distance between the tail of the short-side first corner folder 31 and the top of the baffle 23 is less than the length of the label paper folding at the tail of the cigarette pack 5, which is used to cooperate with the baffle 23 with a shorter length after modification; to prevent the first corner c of the cigarette pack 5 after the first fold of the label paper from spreading out when passing through the gap between the short-side first corner folder 31 and the baffle 23 and being deformed and damaged during the pushing process of the cigarette pack 5. The front end face of the short-side first corner folder 31 is in front of the contact surface with the cigarette pack 5 on the baffle 23, ensuring that the bottom of the cigarette pack 5 can smoothly transition from the short-side first corner folder 31 to the baffle 23 when the bottom of the cigarette pack 5 is transferred from the tail of the short-side first corner folder 31 to the baffle 23.

[0047] As Figure 4 shown, the original heater 41 of the third wheel 1 is a flat heating plate. If the baffle 23 on the sector piece 22 is deformed, it will interfere with the surface of the heater 41.

[0048] As Figure 7As shown in the figure, the modified heater 41 is provided with a stepped baffle channel 42 on the heating surface and the edge of the inner arc surface. When the baffle 23 rotates to the area covered by the heater 41, it is located in the baffle channel 42. When the device rotates, the maximum rotation radius dimension of the baffle 23 on the installed sector piece 22 is used as the benchmark for the slotting radius dimension of the baffle channel 42. The maximum radius of the baffle channel 42 is greater than the maximum rotation radius dimension of the baffle 23 to prevent interference between the top of the baffle 23 and the baffle channel 42. The depth dimension of the baffle channel 42 refers to the thickness of the sector piece 22, and the depth of the baffle channel 42 is greater than the thickness of the baffle 23 to ensure that there is no interference between the baffle 23 and the baffle channel 42 when the sector piece 22 rotates.

[0049] In the embodiment, as Figure 9 shown, after the sector piece 22 and the heater 41 are correctly installed, the heating surface of the heater 41 and the side of the baffle 23 in contact with the cigarette pack 5 are on the same plane, ensuring that the heater 41 contacts the bottom of the cigarette pack 5 to improve the heating and drying effect of the bottom of the cigarette pack 5.

[0050] The working mode of the present utility model:

[0051] The specific installation method of the improved sector piece 22, the short-side first corner folder 31 and the heater 41 on the machine remains unchanged, and only the working parts of the above-mentioned spare parts are locally modified and then used in cooperation.

[0052] When this device is used:

[0053] Step 1: The cigarette pack 5 with the label paper is pushed into the cigarette pack mold box 21 at the 1st station in the wheel frame 21 of the third wheel, and the label paper completes the shaped packaging and completes the folding of the first and second long sides; at the 1st station, when the cigarette pack enters the packaging slot, the bottom of the cigarette pack 5 is limited and guided by the front inclined surface of the short-side first corner folder 31, and the first fold angle c of the cigarette pack 5 is folded out. The side surface of the short-side first corner folder 31 supports the folded first fold angle c and is transmitted from the tail of the short-side first corner folder 31 to the baffle 23 at the 1st station. The 36 baffles 23 behind the cigarette pack mold box 21 play a role in maintaining the folded first fold angle c.

[0054] Step 2: The edge folding device in the original label paper folding device 3 shovels up the label paper to complete the folding of the third long side d; then the cigarette pack 5 rotates with the third wheel 1. During the rotation process, the original label paper folding device 3 sequentially completes the folding of the fourth long side e, the second fold angle f, and the short sides g and h.

[0055] Step 3: During the rotation of the cigarette pack 5 with the third wheel 1, the folding of the label paper is completed, and it enters the heater 41 through the guide plate between the original label paper folding device 3 and the cigarette pack drying device 4. The heating surface of the heater 41 heats the bottom of the cigarette pack 5, and the baffle 23 supporting the bottom fold angle of the cigarette pack 5 passes through the baffle channel 42 on the heater 41.

[0056] Step 4: After the qualified cigarette packs 5 rotate with the third-wheel frame 2 to the 19th station, they are pushed to the fourth wheel by the cigarette-pushing structure of the third wheel 1; after the unqualified cigarette packs 5 rotate with the third-wheel frame 2 to the 24th station, they are removed by the rejection structure of the third wheel 1.

[0057] It should be noted that the technical solution of the present invention has been introduced in detail above, and the principle of the present invention has been described. The description of the above working principle is only used to help understand the core idea of the present invention. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0058] Those skilled in the art to which the present invention pertains can make modifications or supplements to the described specific embodiments or use similar ways to replace them, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the present claims, all of which belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A cigarette pack folding and drying device for a No. 3 wheel of a ZB28 packaging machine, arranged on the No. 3 wheel (1) of the ZB28 packaging machine, comprising a No. 3 wheel frame (2), a plurality of cigarette pack mold boxes (21) are arranged on the circumference of the No. 3 wheel frame (2), the No. 3 wheel frame (2) rotates along the axis of the No. 3 wheel (1) when working, a label paper folding device (3) and a cigarette pack drying device (4) are fixedly arranged behind the No. 3 wheel frame (2), characterized in that: A fan-shaped piece (22) is fixedly arranged on the rear side of the No. 3 wheel frame (2), and a comb-shaped baffle (23) arranged in an arc shape is arranged on the fan-shaped piece (22), the number of baffles (23) on the fan-shaped piece (22) matches the number of cigarette pack mold boxes (21) on the No. 3 wheel frame (2), and a baffle (23) is arranged directly behind each cigarette pack mold box (21); after the cigarette pack (5) enters the cigarette pack mold box (21), the baffle (23) is located at the rear of the cigarette pack (5), and the length of the baffle (23) covering the cigarette pack (5) matches the length of the folded label paper at the rear of the cigarette pack (5); The cigarette pack drying device (4) is provided with a heater (41), and the heater (41) is fixed on a bracket at the rear of the No. 3 wheel frame (2). The heating surface of the heater (41) is close to the rear side of the No. 3 wheel frame (2). The heating surface of the heater (41) and the inner arc edge are provided with a stepped arc-shaped baffle channel (42), and the top of the baffle (23) between the No. 3 wheel frame (2) and the heater (41) is located in the baffle channel (42).

2. The third wheel cigarette pack folding and drying device of the ZB28 packaging machine according to claim 1 is characterized in that: The label paper folding device (3) is provided with a first short-side angle folding device (31), which is arranged between the No. 1 station and the No. 2 wheel of the No. 3 wheel frame (2), and the distance between the tail of the first short-side angle folding device (31) and the top of the baffle (23) is smaller than the length of the folded label paper at the tail of the cigarette pack (5).

3. The third wheel cigarette pack folding and drying device of the ZB28 packaging machine according to claim 2 is characterized in that: The front end surface of the first short-side angle folding device (31) is located forward of the contact surface of the baffle (23) with the cigarette pack (5).

4. The third wheel cigarette pack folding and drying device of the ZB28 packaging machine according to claim 1 is characterized in that: The width of the baffle (23) is smaller than the thickness of the cigarette pack (5), and the top of the baffle (23) is a triangular structure.

5. The third wheel cigarette pack folding and drying device of the ZB28 packaging machine according to claim 1 is characterized in that: The heating surface of the heater (41) and the side surface of the baffle (23) contacting the cigarette pack (5) are located in the same plane.

6. The folding and drying device for the third wheel cigarette pack of the ZB28 packaging machine according to claim 5 is characterized in that: The baffle channel (42) and the fan-shaped piece (22) are coaxial with the third wheel frame (2), and the outermost radius of the arc-shaped baffle channel (42) is greater than the distance from the top of the baffle (23) to the rotation axis of the third wheel frame (2).

7. The third wheel cigarette pack folding and drying device of the ZB28 packaging machine according to claim 1 is characterized in that: The depth of the baffle channel (42) on the heater (41) is greater than the thickness of the baffle (23).

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