Cigarette packer stay wire locking piece and stay wire device

Abstract

The utility model relates to the technical field of cigarette packaging machines, in particular to a cigarette packaging machine stay wire locking piece and a stay wire device. The stay wire locking piece is arranged on a shaft rod of the packaging machine and comprises a sleeve and a lever. The sleeve is arranged on the shaft rod in a sleeving manner, and the sleeve is provided with a through hole for exposing the shaft rod; the lever sequentially comprises a control part, a fulcrum part and an abutting part in the length direction of the lever, the fulcrum part is hinged to the sleeve, the abutting part is provided with an abutting block which can penetrate through the through hole and then abut against the shaft rod, and the control part is connected with the sleeve through an elastic piece. Through the expansion effect of the elastic piece and the cooperation of the lever, the abutting block abuts against the shaft rod, and fixing of the stay wire locking piece is achieved. During disassembly and assembly, the sleeve can be sleeved in and pulled out only by pressing the control part of the lever, and the operation is simple and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette packaging machines, in particular to a wire drawing locking component and a wire drawing device of a cigarette packaging machine. Background Art

[0002] The small bag outer transparent paper packaging machine and the strip box outer transparent paper packaging machine are usually equipped with a wire pulling device, which is used to wax the wire through the wax wheel of the wax cylinder, and then bond and heat-seal the wire with the transparent paper, and then transport it together with the transparent paper. The wire pulling coil for packaging raw materials is usually fixed on a bracket and directly driven by a DC servo motor, so that the speed of releasing the wire is basically consistent with the speed of transporting the transparent paper.

[0003] In traditional packaging machines, the wire reel is fixed to the shaft by a conical nut. When replacing the wire reel, rotate the conical nut clockwise to remove the conical nut from the shaft, remove the wire reel core from the shaft, replace it with a new wire reel, and then install the conical nut on the shaft and tighten it. The whole process requires a long time to rotate the conical nut, which is time-consuming and laborious; and during production, the wire reel and the shaft are rotating, and the conical nut will loosen during the production process, causing the wire reel to fall off, and the wire cannot be unrolled smoothly and falls off the roller, affecting product quality.

[0004] In order to solve the above problems, the prior art provides some solutions. For example, a patent document with publication number CN205367304U discloses a quick fastening device for a cigarette box or cigarette rod wire roll, which includes a support tube sleeved on the outside of a packaging machine screw, a fixed shaft for limiting the position of one end of the wire roll is fixed at one end of the support tube, and a movable shaft for limiting the position of the other end of the wire roll is movably provided on the support tube, the movable shaft is provided with a groove facing the support tube, an elastic part is provided in the groove, a steel ball is movably provided on one side of the elastic part, and the support tube is provided with an embedding groove matching the steel ball. Another example is a patent document with publication number CN202828253U that discloses a wire pulling reel positioning device for a cigarette box or cigarette rod outer transparent paper packaging machine, which includes a wire pulling shaft, an outer wall of one end of the wire pulling shaft is provided with at least one positioning protrusion corresponding to the process groove on the inner core of the wire pulling reel, a through hole is radially provided at the other end of the wire pulling shaft, a steel ball, a compression spring and a plug are provided in the through hole, the inner diameter of the through hole is larger than the diameter of the steel ball, the diameter of the port at one end of the through hole is smaller than the diameter of the steel ball, a plug is provided at the other end of the through hole, and the compression spring is located between the steel ball and the plug.

[0005] In the prior art, most of them use the method of using a spring to drive a steel ball to snap into a groove to fix the wire drawing reel. Although the fixing effect during the operation of the wire drawing reel is improved, the replacement operation of the wire drawing reel is still relatively complicated and time-consuming: the wire drawing reel needs to be disassembled after the steel ball is disengaged from the groove. However, in some technical solutions, the combined structure of the steel ball and the groove is located inside the device and it is difficult to apply force to this combined structure; in some technical solutions, although the combined structure of the steel ball and the groove is located outside, applying force to the steel ball will also affect the movement of the wire drawing reel. Therefore, there is an urgent need to provide a wire drawing device that not only has a good fixing effect on the wire drawing reel but is also easy to disassemble and assemble. Summary of the Utility Model

[0006] The utility model aims to solve the above problems and provides a wire drawing locking part and a wire drawing device for a cigarette packing machine.

[0007] The technical solution for the utility model to solve the problem is as follows. First, a wire drawing locking part for a cigarette packing machine is provided. It is arranged on the shaft of the packing machine and includes a sleeve and a lever. The sleeve is sleeved on the shaft, and the sleeve is provided with a through hole for the shaft to expose. The lever sequentially includes a control part, a fulcrum part, and a pressing part along its own length direction. The fulcrum part is hinged to the sleeve. The pressing part is provided with a pressing block that can pass through the through hole and abut against the shaft. The control part is connected to the sleeve through an elastic member.

[0008] As a preference of the utility model, the pressing block is provided with a threaded surface that can mesh with the external thread of the shaft.

[0009] As a preference of the utility model, a flexible layer is provided on the threaded surface.

[0010] As a preference of the utility model, the distance between the fulcrum part and the control part is greater than the distance between the fulcrum part and the pressing part.

[0011] As a preference of the utility model, the fulcrum part is hinged to the sleeve through a torsion spring.

[0012] As a preference of the utility model, the sleeve and the control part are respectively provided with limiting grooves, and both ends of the elastic member are respectively arranged in the two limiting grooves.

[0013] As a preference of the utility model, in the through hole, an opening is provided on the hole wall far from the control part.

[0014] As a preference of the utility model, the sleeve is provided with a strip-shaped groove along the axial direction, and the lever is installed in the strip-shaped groove.

[0015] As a preference of the present utility model, the wire drawing locking member includes the sleeve and several levers. The several levers are uniformly arranged on the sleeve in a ring shape with the central axis of the sleeve as the center.

[0016] Secondly, another object of the present application is to provide a wire drawing device for a cigarette packaging machine, which includes a shaft rod, a wire drawing reel sleeved on the shaft rod, and the wire drawing locking member described above. At least one end of the wire drawing reel abuts against the sleeve of the wire drawing locking member.

[0017] The beneficial effects of the present utility model:

[0018] 1. The present application provides a wire drawing locking member. During operation, through the expansion action of the elastic member and the cooperation of the levers, the abutting block is tightly pressed against the shaft rod to realize the fixation of the wire drawing locking member. When disassembling and assembling, only need to press the control part of the lever to insert and pull out the sleeve, and the operation is simple and fast.

[0019] 2. In some embodiments, the abutting block is provided with a threaded surface to engage with the external thread of the shaft rod of the packaging machine, further improving the fastening property. In some embodiments, the tightening force is further enhanced by a torsion spring. In some embodiments, the position of the fulcrum part of the lever is adjusted so that the power arm length of the lever is greater than the resistance arm length, which not only makes it more labor-saving to press the lever, but also makes it necessary to provide a greater force to the abutting block to cause the lever to rotate in the reverse direction and the locking member to loosen when the locking member wants to loosen, that is, the fastening property of the locking member can be further improved.

[0020] 3. The present application provides a wire drawing device. Without changing the original structure of the packaging machine, the above-mentioned wire drawing locking member is used to fix the wire drawing sleeve on the shaft rod, and the rapid replacement of the wire drawing sleeve can be realized. After improvement, the time for replacing the draw tape is shortened from 49.7 seconds per time to 30.5 seconds per time, the output per shift increases by 5 - 6 pieces, the production efficiency is improved, and the labor intensity is reduced. Description of the Drawings

[0021] Figure 1 is the front view of a wire drawing locking member for a cigarette packaging machine;

[0022] Figure 2 is the side view of a wire drawing locking member for a cigarette packaging machine;

[0023] Figure 3 is the sectional view of a wire drawing locking member for a cigarette packaging machine;

[0024] Figure 4 is the structural schematic diagram of a wire drawing device for a cigarette packaging machine;

[0025] In the figure: sleeve 11, through hole 111, opening 111a, strip-shaped groove 112, lever 12, control part 121, fulcrum part 122, pressing part 123, abutting block 13, threaded surface 131, elastic member 14, limiting groove 15, shaft rod 2, wire drawing reel 3. Detailed implementation mode

[0026] The following is the detailed implementation mode of the present utility model, and the technical solution of the present utility model is further described, but the present utility model is not limited to these embodiments.

[0027] A wire drawing locking member for a cigarette packing machine, as Figure 4 shown, is usually used to be arranged on the shaft rod 2 of the packing machine, and can fix the wire drawing sleeve 3 on the shaft rod 2 by pressing.

[0028] As Figure 3 shown, such a wire drawing locking member includes a sleeve 11 and a lever 12. The sleeve 11 is used to sleeved on the shaft rod 2. The inner surface of the sleeve 11 is a cylindrical surface matching with the outer surface of the shaft rod 2, and the shape of the outer surface is not limited. For example, it can also be a cylindrical surface.

[0029] In some embodiments, as Figure 1 shown, the outer surface of the sleeve 11 is successively conical and cylindrical along the axial direction. The cylindrical setting facilitates manual application of force to the sleeve 11. The conical setting makes the outer diameter of the sleeve 11 change from small to large along the axial direction, so as to adapt to wire drawing sleeves 3 with different inner diameter sizes. For example, when the inner diameter of the wire drawing sleeve 3 is slightly larger than the outer diameter of the shaft rod 2, even if both ends of the wire drawing sleeve 3 in the axial direction are pressed, the wire drawing sleeve 3 may still move in the radial direction. By inserting the conical part of the sleeve 11 between the wire drawing sleeve 3 and the shaft rod 2, the gap between the wire drawing sleeve 3 and the shaft rod 2 can be filled, and the fastening of the wire drawing sleeve 3 on the shaft rod 2 can be improved.

[0030] As Figure 3 shown, a through hole 111 through which the outer surface of the shaft rod 2 can be exposed is provided on the sleeve 11. The shape of the through hole 111 is not limited, as long as the abutting block 13 in the subsequent lever 12 can pass through it. The through hole 111 can be a complete hole or a notch-type structure with one end closed and one end open. Preferably, it is a notch-type structure to facilitate the entry and exit of the abutting block 13 in the subsequent lever 12. That is to say, the through hole 111 is opened at the end of the sleeve 11. One end of the through hole 111 along the axial direction of the sleeve 11 is closed by the solid part of the sleeve 11, and the other end is provided with an opening 111a and is directly communicated with the outside.

[0031] The lever 12 successively includes a control part 121, a fulcrum part 122, and a pressing part 123 along its own length direction. The fulcrum part 122 is hinged to the sleeve 11, and the hinging method is not limited. In some embodiments, as Figures 1-3As shown in the figure, two first mounting holes are provided on the sleeve 11. At the same time, a mounting block is provided at the fulcrum portion 122 of the lever 12, and a second mounting hole is provided on the mounting block. The axial directions of the three mounting holes are all perpendicular to the axial direction of the sleeve 11. A connecting rod is sequentially passed through a first mounting hole of the sleeve 11, the second mounting hole of the mounting block, and the other first mounting hole of the sleeve 11, and then the two ends of the connecting rod are respectively fixed in the first mounting holes. The connecting rod is not fixed to the second mounting hole. Then the mounting block can rotate around the connecting rod to achieve hinging.

[0032] In some embodiments, the two first mounting holes are threaded holes, the connecting rod is a screw rod, and the second mounting hole is a through hole with a smooth inner surface. By means of threaded connection, the two ends of the connecting rod can be respectively fixed to the two first mounting holes.

[0033] In some embodiments, a torsion spring is further sleeved on the connecting rod, and the inner wall of the second mounting hole is connected to the torsion arm of the torsion spring. The setting of the torsion spring makes the rotation of the lever 12 around the connecting rod also need to overcome the torsional force of the torsion spring, improving the fastening property of the abutting block 13 in the subsequent lever 12 abutting against the shaft rod 2.

[0034] As Figure 3 shown, the abutting portion 123 is provided with an abutting block 13 that can pass through the through hole 111 of the sleeve 11 and then abut against the shaft rod. By radially pressing the shaft rod 2 with the abutting block 13, the fastening property of the locking member on the shaft rod 2 is improved.

[0035] In some embodiments, the abutting block 13 is provided with a threaded surface 131 that can engage with the external thread of the shaft rod 2. By the engagement action between the threaded surface 131 and the external thread of the shaft rod 2, the fastening property of the locking member on the shaft rod 2 is further improved.

[0036] In some embodiments, a flexible layer, such as a rubber pad, is provided on the threaded surface 131 to fill the gap between the threaded surface 131 and the external thread of the shaft rod 2 after meshing, preventing the locking member from loosening due to the meshing gap during the rotation of the shaft rod 2.

[0037] As Figure 3 shown, the control portion 121 and the sleeve 11 are connected by an elastic member 14. Through the expansion action of the elastic member 14, the abutting block 13 at the other end of the lever 12 abuts tightly against the shaft rod 2.

[0038] In some embodiments, the sleeve 11 and the control portion 121 are respectively provided with limiting grooves 15, and the two ends of the elastic member 14 are respectively arranged in the two limiting grooves 15 to ensure the telescopic direction of the elastic member 14 through the limiting grooves 15.

[0039] In some embodiments, the distance between the fulcrum portion 122 and the control portion 121 is greater than the distance between the fulcrum portion 122 and the abutting portion 123. That is to say, the power arm length of the lever is greater than the resistance arm length. Under the same elastic member 14, the product of the elastic force of the elastic member 14 and the power arm length is greater. When the locking member wants to become loose, a greater force needs to be applied to the abutting block 13 to cause the lever to rotate in the reverse direction and the locking member to become loose. That is, the fastening property of the locking member can be further improved.

[0040] In some embodiments, such as Figure 1 shown, the sleeve 11 is provided with a strip-shaped groove 112 in the axial direction, and the lever 12 is installed in the strip-shaped groove 112 to prevent accidental contact with the lever 12 by human force or other structures during the working process, resulting in the failure of the locking member.

[0041] In some embodiments, the cable locking member includes a sleeve 11 and a plurality of levers 12. The plurality of levers 12 are uniformly arranged in a ring on the sleeve 11 with the central axis of the sleeve 11 as the center, and multiple abutting points against the shaft rod 2 are realized through the plurality of levers 12, improving the fastening property and the uniformity of fastening.

[0042] Through the setting of the above structure, when the sleeve 11 of the locking member is sleeved on the shaft rod 2, the elastic member 14 drives the control portion 121 of the lever 12 to expand outward. Under the hinge action of the fulcrum portion 122, the abutting portion 123 of the lever 12 is urged to abut against the shaft rod 2, realizing the fixation of the locking member on the shaft rod 2. When the locking member needs to be disassembled, only the control portion 121 needs to be pressed inward to cause the elastic member 14 to contract. Under the hinge action of the fulcrum portion 122, the abutting portion 123 of the lever 12 is urged to move away from the shaft rod 2, releasing the abutment against the shaft rod 2. At this time, the sleeve 11 can be slid to realize the disassembly of the locking member, and then the cable winding drum 3 locked by the locking member can be replaced.

[0043] A cable device of a cigarette packaging machine using such a cable locking member, such as Figure 4 shown, includes a shaft rod 2, a cable winding drum 3 sleeved on the shaft rod 2, and the above-mentioned cable locking member. The number of cable locking members can be two, which are respectively arranged at both ends of the cable winding drum 3 to clamp and fix the cable winding drum 3.

[0044] In some embodiments, such as Figure 4As shown, the number of the wire-pulling locking members is one. At the same time, a fixing block is further provided on the shaft rod 2, and the wire-pulling reel 3 is clamped between the fixing block and the wire-pulling locking member. During use, the wire-pulling reel 3 is sleeved on the shaft rod 2 and moved until it abuts against the fixing block. Then, while pressing the control part 121 of the locking member, the sleeve 11 is sleeved on the shaft rod 2 and moved until it abuts against the wire-pulling reel 3. Finally, the pressing on the control part 121 is released. Under the action of the elastic member 14, the abutting block 13 of the abutting part 123 abuts tightly against the shaft rod 2, completing the fixing of the locking member and also completing the fixing of the wire-pulling reel 3.

[0045] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar ways to substitute, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A wire locking member for a cigarette packaging machine, arranged on a shaft (2) of the packaging machine, characterized in that: It comprises a sleeve (11) and a lever (12); The sleeve (11) is sleeved on the shaft (2), and the sleeve (11) is provided with a through hole (111) through which the shaft (2) is exposed; The lever (12) comprises a control portion (121), a fulcrum portion (122), and a pressing portion (123) in sequence along its length direction; the fulcrum portion (122) is hinged to the sleeve (11); the pressing portion (123) is provided with a contact block (13) which can pass through the through hole (111) and contact the shaft rod (2); the control portion (121) is connected to the sleeve (11) via an elastic member (14).

2. A wire locking member for a cigarette packaging machine according to claim 1, characterized in that: The abutment block (13) is provided with a threaded surface (131) that can engage with the external thread of the shaft rod (2).

3. A wire locking member for a cigarette packaging machine according to claim 2, characterized in that: A flexible layer is provided on the threaded surface (131).

4. A wire locking member for a cigarette packaging machine according to claim 1, characterized in that: The distance between the fulcrum portion (122) and the control portion (121) is greater than the distance between the fulcrum portion (122) and the abutting portion (123).

5. The wire locking member for cigarette packaging machine according to claim 1, characterized in that: The fulcrum portion (122) and the sleeve (11) are hingedly connected via a torsion spring.

6. A wire locking member for a cigarette packaging machine according to claim 1, characterized in that: The sleeve (11) and the control portion (121) are respectively provided with limiting grooves (15), and the two ends of the elastic member (14) are respectively arranged in the two limiting grooves (15).

7. A wire locking member for a cigarette packaging machine according to claim 1, characterized in that: In the through hole (111), an opening (111a) is provided on the hole wall away from the control portion (121).

8. The wire locking member for cigarette packaging machine according to claim 1, characterized in that: The sleeve (11) is provided with a strip-shaped groove (112) along the axial direction, and the lever (12) is installed in the strip-shaped groove (112).

9. The wire locking member for a cigarette packaging machine according to claim 1, characterized in that: The wire locking member comprises a sleeve (11) and a plurality of levers (12), wherein the plurality of levers (12) are evenly arranged on the sleeve (11) in a ring shape with the central axis of the sleeve (11) as the center.

10. A wire drawing device for a cigarette packaging machine, characterized in that: It comprises a shaft (2), a wire reel (3) sleeved on the shaft (2), and a wire locking member according to any one of claims 1 to 9, wherein at least one end of the wire reel (3) abuts against a sleeve (11) of the wire locking member.

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