Tightening mechanism of packing machine

Abstract

The utility model discloses a tightening mechanism of a packing machine, which comprises a driving component and a tightening component, the driving component comprises a shell and a handle, the handle is rotatably connected with the shell, one end of the handle close to the shell is provided with a driving part, and the shell is positioned on the motion trail of the driving part; the shell is movably connected with the base, and the base is provided with tightening teeth; the tightening wheel is linked with the driving assembly, and the tightening wheel is matched with the tightening teeth; the handle is rotationally connected with the shell, so that the driving part forms a lever type driving effect, when the handle moves, the driving part abuts against the shell and continues to move, under the action of a lever, the driving part can drive the shell to rotate, namely, the whole driving assembly moves, and due to the fact that the tightening wheel and the driving assembly are arranged in a linkage mode, the tightening wheel and the driving assembly are arranged in a linkage mode. The tightening wheel can also move synchronously, and the distance between the tightening wheel and the tightening teeth is adjusted. The structure is simple, the driving effect can be achieved through the lever effect and small acting force, the assembling efficiency can be improved, and the operation convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of processing equipment, and particularly relates to a tightening mechanism of a strapping machine. Background Art

[0002] During the transportation and transfer of goods, the most common way is to pack the scattered goods into a whole by using a strapping band to avoid the scattering and damage of the goods. The tightening mechanism of the strapping machine is widely applicable to carton packing, industrial packing and daily necessities packing due to the advantages of high packing efficiency and stable tightening force.

[0003] During the packing process, the tightening of the strapping band is realized through the tightening mechanism, and finally a welding and fixing effect is formed through the welding mechanism. In the prior art, during the tightening process of the strapping band, it is necessary to press the handle so that the tightening wheel abuts against the strapping band to form a tightening effect. When the handle moves in the opposite direction, the tightening wheel will be lifted, and at this time, the gap between the tightening wheel and the tightening teeth becomes larger, and at this time, the strapping band can be taken out or placed. In the prior art, the structure of the handle driving the tightening wheel is relatively complex, resulting in difficult installation. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is how to improve the problem of handle driving.

[0005] To this end, a tightening mechanism of a strapping machine includes:

[0006] A driving component, the driving component includes a housing and a handle, the handle is rotatably connected to the housing, a driving part is provided at one end of the handle close to the housing, and the housing is located on the movement track of the driving part;

[0007] A base, the housing is movably connected to the base, and the base is provided with tightening teeth;

[0008] A tightening wheel, the tightening wheel is linked with the driving component, and the tightening wheel cooperates with the tightening teeth.

[0009] The housing is provided with a first chamber, and the driving part extends into the first chamber.

[0010] The first chamber houses a micro switch, and the micro switch is located on the movement track of the driving part.

[0011] The driving component further includes a first elastic member, the first elastic member is located between the driving part and the rotation position of the handle, one end of the first elastic member abuts against the handle, and the other end of the first elastic member abuts against the housing.

[0012] The housing is provided with a first groove, and the first elastic member is housed in the first groove.

[0013] It further includes a limiting frame. The housing and the limiting frame are respectively arranged on two sides of the base, and the limiting frame is sleeved on the side surface of the tightening wheel.

[0014] The limiting frame and the base cooperate to form a limit for the gap between the tightening wheel and the tightening teeth.

[0015] For the tightening mechanism of a strapping machine provided by the present utility model, the limiting frame and the base also form a limit for the strapping belt, preventing the strapping belt from shifting during the tightening process.

[0016] The driving assembly further includes a connecting shaft. The limiting frame is provided with a second groove. The connecting shaft passes through the base and the tightening wheel and extends to the second groove, and the connecting shaft is linked with the tightening wheel.

[0017] It further includes a pressing-down assembly. The base is provided with a second chamber. The pressing-down assembly includes a pressure rod, an adjusting member, and a second elastic member. The pressure rod, the adjusting member, and the second elastic member are all accommodated in the second chamber. The second elastic member is located between the pressure rod and the adjusting member, and the pressure rod abuts against the tightening wheel.

[0018] The driving assembly includes a driving source, a worm gear, and a worm. The driving source is matched with the worm, the worm is matched with the worm gear, and the worm gear is matched with the tightening wheel.

[0019] The technical solution of the present utility model has the following advantages:

[0020] 1. For the tightening mechanism of a strapping machine provided by the present utility model, the handle is rotatably connected to the housing. Therefore, the driving part forms a lever-type driving effect. When the handle moves, the driving part abuts against the housing. When it continues to move, under the lever action, the driving part will drive the housing to rotate, which is equivalent to the movement of the entire driving assembly. Since the tightening wheel is linked with the driving assembly, at this time, the tightening wheel will also move synchronously to adjust the distance between the tightening wheel and the tightening teeth. This kind of structure is simple. Through the lever action, a small acting force can achieve the driving effect, which can improve the assembly efficiency and the operation convenience.

[0021] 2. For the tightening mechanism of a strapping machine provided by the present utility model, the driving part extends into the first chamber to form a limit for the movement range, preventing the driving part from moving excessively. In addition, it can also be a through hole, or the driving part can be matched with a convex block.

[0022] 3. For the tightening mechanism of a strapping machine provided by the present utility model, the micro switch plays an auxiliary role. It can inform the control program of the current position of the handle through the micro switch, so that the control program can judge whether it can work.

[0023] 4. The tightening mechanism of a strapping machine provided by the present utility model. The setting of the first elastic member has a supporting effect, so that in the initial state, the driving part cooperates with the microswitch to form a signal transmission effect. When the handle rotates in the reverse direction, the driving part separates from the microswitch, and another signal can be generated.

[0024] 5. The tightening mechanism of a strapping machine provided by the present utility model. The setting of the first groove better realizes the fixing effect of the first elastic member and prevents it from shifting.

[0025] 6. The tightening mechanism of a strapping machine provided by the present utility model. The limiting frame and the base cooperate to form a limiting effect on the tightening wheel, preventing the tightening wheel from shifting.

[0026] 7. The tightening mechanism of a strapping machine provided by the present utility model. Through the setting of the pressing component, the pressure rod always applies a downward pressure to the tightening wheel, so that the tightening wheel can always fix the two loose binding straps during operation.

[0027] 8. The tightening mechanism of a strapping machine provided by the present utility model. The worm gear and the worm cooperate to form a decelerating effect and better realize the driving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is a schematic structural diagram of the tightening mechanism of a strapping machine provided by the present utility model;

[0030] Figure 2 It is a cross-sectional view of the tightening mechanism of a strapping machine provided by the present utility model;

[0031] Figure 3 It is a cross-sectional view of the tightening mechanism of a strapping machine provided by the present utility model;

[0032] Figure 4 It is a cross-sectional view of the tightening mechanism of a strapping machine provided by the present utility model.

[0033] DESCRIPTION OF THE REFERENCE NUMERALS:

[0034] 11. Housing; 12. Handle; 13. Base; 14. Tightening wheel; 15. Microswitch; 16. First elastic member; 17. Limiting frame; 18. Connecting shaft; 19. Pressure rod; 20. Adjusting member; 21. Second elastic member; 22. Driving source; 23. Worm gear; 24. Worm; 111. First chamber; 112. First groove; 121. Driving portion; 131. Tightening teeth; 132. Second chamber; 141. Linkage portion; 142. Wheel portion; 171. Limiting extension portion; 172. Second groove. Detailed implementation manners

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0037] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0038] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0039] Embodiment 1

[0040] This embodiment provides a tightening mechanism of a bundling machine. As shown in the attached Figures 1-4 drawing, it includes:

[0041] The driving assembly includes a housing 11 and a handle 12. The handle 12 is rotatably connected to the housing 11. Here, the rotational connection can be such that the handle 12 is provided with a rotating shaft, the housing 11 is provided with a rotating shaft hole, and the rotating shaft and the rotating shaft hole cooperate to form a relative rotation effect. It can also be that the handle 12 is provided with a rotating shaft hole, the housing 11 is provided with a rotating shaft, and the rotating shaft and the rotating shaft hole cooperate to form a relative rotation effect. It can also be that a pin shaft passes through the handle 12 and cooperates with the housing 11 to form an effect of the handle 12 rotating relative to the housing 11. In this embodiment, a pin shaft is used for cooperation. Here, the cooperation position of the pin shaft and the handle 12 can be adjusted according to actual needs. It should be noted that the pin shaft is located at one end of the handle 12 close to the housing 11, forming a lever effect to increase the magnification. A driving part 121 is provided at one end of the handle 12 close to the housing 11. The housing 11 is located on the movement track of the driving part 121. When the handle 12 rotates, the driving part 121 will abut against the housing 11. When the handle 12 continues to move, the driving part 121 will drive the housing 11 to move, which is equivalent to the movement of other parts of the driving assembly.

[0042] The base 13 is used to cooperate with the workbench surface of the strapping machine to form a fixed effect. Here, the base 13 is stationary. The housing 11 is movably connected to the base 13. Here, the movable connection can be a rotational connection, a flexible connection, or other connection methods. In this embodiment, taking the rotational connection as an example, the rotational connection can be the cooperation of a rotating shaft and a rotating shaft hole, or the pin shaft passing through the base 13 and cooperating with the housing 11. The base 13 is provided with tightening teeth 131, and the tightening teeth 131 are used to cooperate with the tightening wheel 14 to form a tightening effect on the strapping.

[0043] The tightening wheel 14 is linked with the driving assembly. Specifically, the driving assembly drives the tightening wheel 14 to rotate. The tightening wheel 14 cooperates with the tightening teeth 131. When a strapping (double-layer overlapping) needs to be inserted between the tightening wheel 14 and the tightening teeth 131, through the rotation of the tightening wheel 14, the upper part of the strapping is pulled to achieve a tightening effect. Finally, it is welded by the welding mechanism of the strapping machine to complete the strapping process.

[0044] Since the handle 12 is rotatably connected to the housing 11, the driving part 121 forms a lever-type driving effect. When the handle 12 moves, the driving part 121 abuts against the housing 11. When it continues to move, under the lever action, the driving part 121 will drive the housing 11 to rotate, which is equivalent to the movement of the entire driving assembly. Since the tightening wheel 14 is linked with the driving assembly, at this time, the tightening wheel 14 will also move synchronously to adjust the distance between the tightening wheel 14 and the tightening teeth 131. This kind of structure is simple. Through the lever action, a small force can achieve the driving effect, which can improve the assembly efficiency and the operation convenience.

[0045] Specifically, as shown in the appendix Figures 1-4As shown, the housing 11 is provided with a first chamber 111. The first chamber 111 is specifically located near the top surface of the housing 11. The first chamber 111 has a side opening, and the driving part 121 extends from the side opening into the first chamber 111, that is, a part of the driving part 121 is located inside the first chamber 111. The inner wall of the first chamber 111 is on the movement track of the driving part 121, and the rest of the driving part 121 cooperates with the handle 12 as a whole. The driving part 121 extends into the first chamber 111 to form a limitation of the movement range and prevent the driving part 121 from excessive movement. In addition, it can also be a through hole, or the driving part 121 can cooperate with a bump.

[0046] Specifically, in this embodiment, the driving part 121 can be a pin shaft, that is, one end of the pin shaft is connected and fixed to the handle 12, and the other end of the pin shaft extends into the first chamber 111.

[0047] Specifically, as shown in the attached Figures 1-4 As shown, the first chamber 111 houses a micro switch 15, and the micro switch 15 is on the movement track of the driving part 121. The micro switch 15 plays an auxiliary role. It can inform the control program of the current position of the handle 12 through the micro switch 15, so that the control program can judge whether it can work. In this embodiment, the first chamber 111 has an upper opening, and the micro switch 15 is located in the upper region of the first chamber 111, that is, near the upper opening. That is, the driving part 121 rotates up and down. When the driving part 121 rotates to the upper end, it cooperates with the micro switch 15 to drive the micro switch 15 to work. When the driving part 121 rotates to the lower end, it cooperates with the bottom surface of the first chamber 111. When the driving part 121 continues to rotate, the driving part 121 will drive the entire housing 11 to move.

[0048] Specifically, as shown in the attached Figures 1-4 As shown, the driving assembly further includes a first elastic member 16. The first elastic member 16 is located between the rotating position of the driving part 121 and the handle 12. One end of the first elastic member 16 abuts against the handle 12, and the other end of the first elastic member 16 abuts against the housing 11. Specifically, the first elastic member 16 is located between the rotating pin shaft and the driving part 121. The setting of the first elastic member 16 plays a supporting role, so that in the initial state, the driving part 121 cooperates with the micro switch 15 to form a signal transmission effect. When the handle 12 rotates in the opposite direction, the driving part 121 separates from the micro switch 15, and another signal can be generated. In this embodiment, the first elastic member 16 can be a straight spring or a conical spring.

[0049] Specifically, the housing 11 is provided with a first groove 112, and the first elastic member 16 is accommodated in the first groove 112. The provision of the first groove 112 better realizes the fixing effect of the first elastic member 16 and prevents it from shifting. It should be noted that in this embodiment, the top surface of the housing 11 is of an irregular shape, the part of the housing 11 cooperating with the handle 12 is of a stepped shape, the first chamber 111 is located in the stepped connection area, the microswitch 15 is located at the upper stepped position, the first groove 112 is located at the lower stepped position, the bottom surface of the handle 12 cooperates with the lower step, and the side surface of the handle 12 cooperates with the stepped connection area.

[0050] Specifically, as shown in Figure 1 、 3 , a limiting frame 17 is further included. The housing 11 and the limiting frame 17 are respectively arranged on both sides of the base 13. The housing 11 rotates relative to the base 13, and the limiting frame 17 also rotates relative to the base 13. In this embodiment, specifically, a pin shaft passes through the limiting frame 17, the base 13 and the housing 11 for connection, thus forming a fixed middle part and a relative rotation effect at both ends. The tightening wheel 14 is located on the side of the base 13 away from the housing 11, and the limiting frame 17 is sleeved on the side surface of the tightening wheel 14. The limiting frame 17 and the base 13 cooperate to form a limiting effect on the tightening wheel 14 to prevent the tightening wheel 14 from shifting.

[0051] Specifically, as shown in Figure 1 、 3 , the limiting frame 17 and the base 13 cooperate to form a limit on the gap between the tightening wheel 14 and the tightening teeth 131. The limiting frame 17 and the base 13 also form a limit on the tie strap to prevent the tie strap from shifting during the tightening process. In this embodiment, the base 13 is of an L-shaped structure, the tightening teeth 131 are located in the horizontal area of the L-shape, the limiting frame 17 and the tightening wheel 14 are located above the horizontal area of the L-shape, and the limiting frame 17 and the base 13 clamp the tightening wheel 14 from the front and back. When the handle 12 works and the tightening wheel 14 is pressed down, at this time, the limiting frame 17 also moves together, so that the limiting frame 17 fits with the horizontal area of the L-shape, thus forming a limit on the gap between the tightening wheel 14 and the tightening teeth 131. Further, the limiting frame 17 is further provided with a limiting extension part 171, and the limiting extension part 171 extends beyond the base 13 to increase the limiting length of the tie strap. It should also be noted that the tightening wheel 14 can move up and down relative to the base 13 or rotate relative to the base 13.

[0052] Specifically, as shown in Figure 3 , the driving assembly further includes a connecting shaft 18. The limiting frame 17 is provided with a second groove 172. The connecting shaft 18 passes through the base 13 and the tightening wheel 14 and extends to the second groove 172, and the connecting shaft 18 is linked with the tightening wheel 14.

[0053] Specifically, as shown in Figure 3As shown in the figure, it further includes a pressing-down component. The base 13 is provided with a second chamber 132. The pressing-down component includes a pressure rod 19, an adjusting member 20, and a second elastic member 21. The pressure rod 19, the adjusting member 20, and the second elastic member 21 are all accommodated in the second chamber 132. The second elastic member 21 is located between the pressure rod 19 and the adjusting member 20. By adjusting the position of the adjusting member 20, the pressure received by the pressure rod 19 can be adjusted. Here, the adjusting member 20 can be a nut. The pressure rod 19 abuts against the tightening wheel 14. It should be noted here that the tightening wheel 14 is not a regular shape. The tightening wheel 14 includes a linkage portion 141 and a wheel portion 142. The linkage portion 141 is fixedly connected to the gear portion 142. The linkage portion 141 is a cylindrical structure. The connecting shaft 18 passes through the linkage portion 141 to form a linkage effect with the tightening wheel 14, and the pressure rod 19 abuts against the linkage portion 141. A number of protrusions are provided on the wheel portion 142 for cooperating with the tightening teeth 131 to form a tightening effect. Through the setting of the pressing-down component, a downward pressure is continuously applied to the tightening wheel 14 through the pressure rod 19, so that the tightening wheel 14 can fix the two loose binding straps at any time during operation. It should be noted here that the base 13 is provided with a hole penetrating through the front and back. The hole is communicated with the second chamber 132, and the hole diameter is larger than the diameter of the linkage portion 141. Therefore, the linkage portion 141 can move up and down relative to the base 13.

[0054] Specifically, as shown in the appendix Figures 3-4As shown, the driving assembly includes a driving source 22, a worm gear 23, and a worm 24. The driving source 22 is engaged with the worm 24. Here, the driving source 22 and the worm 24 can be driven by a gear set or a pulley. The worm 24 is engaged with the worm gear 23, and the worm gear 23 is engaged with the tightening wheel 14. One end of the connecting shaft 18 is connected to the worm gear 23, and the other end of the connecting shaft 18 is connected to the tightening wheel 14. The connecting shaft 18 is a separate component; or, the connecting shaft 18 is a part of the worm gear 23, and when the worm gear 23 rotates as a whole, the connecting shaft 18 also rotates; or, the connecting shaft 18 is a part of the tightening wheel 14, and when the tightening wheel 14 rotates as a whole, the connecting shaft 18 also rotates. The worm gear 23 is engaged with the worm 24 to form a deceleration effect and better achieve the driving effect. In this embodiment, the connecting shaft 18 is a part of the worm gear 23. The worm gear 23 and the worm 24 are accommodated in the cavity, and the driving source 22 is located outside the housing 11. The driving source 22 is bolted to the housing 11. In this embodiment, the driving source 22 is horizontally placed, that is, a side-mounted effect is formed. The driving source 22 can be a motor, a cylinder, an oil cylinder, etc. A part of the worm 24 extends to the outside to cooperate with the driving source 22 to form a linkage effect. A part of the connecting shaft 18 is located in the cavity, and the rest passes through the base 13, the tightening wheel 14 and cooperates with the second groove 172. Here, the driving assembly as a whole forms a modular structure, that is, the housing 11, the worm gear 23, and the worm 24 are an integral structure. When the handle 12 is driven, the housing 11, the worm gear 23, and the worm 24 will move synchronously, so that the tightening wheel 14 cooperates with or separates from the tightening teeth 131. Moreover, when the housing 11 rotates, the limiting frame 17 will also move together.

[0055] Specifically, in order to improve the rotation effect, two bearings are sleeved on the worm 24, and the two bearings are respectively engaged with the housing 11. Two bearings are also sleeved on the worm gear 23, and the two bearings are respectively engaged with the housing 11.

[0056] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A tightening mechanism of a packing machine, characterized in that, Comprising: A driving component, the driving component includes a housing (11) and a handle (12). The handle (12) is rotatably connected to the housing (11). A driving part (121) is provided at one end of the handle (12) close to the housing (11), and the housing (11) is located on the movement track of the driving part (121); A base (13), the housing (11) is movably connected to the base (13), and the base (13) is provided with tightening teeth (131); A tightening wheel (14), the tightening wheel (14) is linked with the driving component, and the tightening wheel (14) cooperates with the tightening teeth (131); The driving component further includes a first elastic member (16). The first elastic member (16) is located between the driving part (121) and the rotation position of the handle (12). One end of the first elastic member (16) abuts against the handle (12), and the other end of the first elastic member (16) abuts against the housing (11).

2. The tightening mechanism of the bundling machine according to claim 1, characterized in that, The housing (11) is provided with a first chamber (111), and the driving part (121) extends into the first chamber (111).

3. The tightening mechanism of the baling machine according to claim 2, characterized in that, The first chamber (111) houses a microswitch (15), and the microswitch (15) is located on the movement track of the driving part (121).

4. The tightening mechanism of the bundling machine according to claim 3, characterized in that, The housing (11) is provided with a first groove (112), and the first elastic member (16) is housed in the first groove (112).

5. The tightening mechanism of the packing machine according to claim 1, characterized in that, It further includes a limiting frame (17). The housing (11) and the limiting frame (17) are respectively arranged on both sides of the base (13), and the limiting frame (17) is sleeved on the side surface of the tightening wheel (14).

6. The tightening mechanism of the packing machine according to claim 5, characterized in that The limiting frame (17) and the base (13) cooperate to form a limit for the gap between the tightening wheel (14) and the tightening teeth (131).

7. The tightening mechanism of the packing machine according to claim 5 or 6, characterized in that, The driving component further includes a connecting shaft (18). The limiting frame (17) is provided with a second groove (172). The connecting shaft (18) passes through the base (13) and the tightening wheel (14) and extends into the second groove (172), and the connecting shaft (18) is linked with the tightening wheel (14).

8. The tightening mechanism of the packing machine according to claim 1, characterized in that, It further includes a pressing-down component. The base (13) is provided with a second chamber (132). The pressing-down component includes a pressure rod (19), an adjusting member (20), and a second elastic member (21). The pressure rod (19), the adjusting member (20), and the second elastic member (21) are all housed in the second chamber (132). The second elastic member (21) is located between the pressure rod (19) and the adjusting member (20), and the pressure rod (19) abuts against the tightening wheel (14).

9. The tightening mechanism of the packing machine according to claim 1, characterized in that, The driving component includes a driving source (22), a worm gear (23), and a worm (24). The driving source (22) is in gear set transmission or belt pulley transmission with the worm (24). The worm (24) cooperates with the worm gear (23), and the worm gear (23) cooperates with the tightening wheel (14).

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