A packing machine and its speed reducing mechanism

Abstract

The utility model discloses a baling machine and a reduction mechanism thereof, comprising a housing, a worm wheel and a worm, wherein a transmission gear is rotatably connected in the housing, an input shaft and an output shaft are rotatably connected on the housing, the transmission gear transmits the input shaft and the worm, the worm is meshed with the worm wheel, the worm wheel is fixed on the output shaft, the output shaft is vertically arranged to the axis of the input shaft, and the reduction mechanism realizes reduction through the transmission of the reduction gear group combined with the worm wheel and the worm, so that the input shaft and the output shaft are in a mutually perpendicular state, so that the overall volume can be smaller and the structure is more compact when used after the subsequent connection to the driving source, and the worm wheel and the worm have a larger transmission ratio, the transmission is stable and the noise is small.

Description

Technical Field

[0001] The utility model relates to the field of reducers, in particular to a baling machine and a reduction mechanism thereof. Background Art

[0002] The reducer is an independent component consisting of a gear transmission enclosed in a rigid housing, and is often used as a reduction transmission device between the prime mover and the working machine. It plays the role of matching speed and transmitting torque between the prime mover and the working machine or actuator, and is widely used in modern machinery.

[0003] The commonly used reducer currently includes a housing and a transmission gear arranged inside, which realizes transmission and speed reduction at the same time through the meshing between various large and small gears. However, the input end and the output end are parallel when the speed reduction is simply achieved through gears, which makes the overall volume larger when the drive source is subsequently installed, and needs further improvement. Utility Model Content

[0004] In order to further reduce the overall volume during use, the present application provides a deceleration mechanism.

[0005] The present application provides a deceleration mechanism, which adopts the following technical solution:

[0006] A reduction mechanism comprises a housing, a worm wheel and a worm, wherein a transmission gear is rotatably connected in the housing, an input shaft and an output shaft are rotatably connected on the housing, the transmission gear transmits the input shaft and the worm, the worm is meshed with the worm wheel, the worm wheel is fixed on the output shaft, and the output shaft is arranged perpendicular to the axis of the input shaft.

[0007] Optionally, the tooth portion of the worm wheel adopts helical teeth, the meshing portion of the worm is an arc surface, and the tooth portion of the worm wheel is in point contact or line contact with the meshing portion of the worm.

[0008] Optionally, the transmission gear includes a primary reduction gear set and a secondary reduction gear set.

[0009] Optionally, the first-stage reduction gear set includes a first-stage reduction small tooth and a first-stage reduction large tooth that are meshed with each other, and the second-stage reduction gear set includes a second-stage reduction small tooth and a second-stage reduction large tooth that are meshed with each other, the first-stage reduction small tooth is connected to the input shaft, the second-stage reduction small tooth is circumferentially linked with the first-stage reduction large tooth, and the second-stage reduction large tooth is connected to the worm.

[0010] A baling machine comprises the above-mentioned speed reduction mechanism, and also comprises a base, a main body, a tensioning mechanism, a welding mechanism and a driving source, wherein the driving source comprises a tensioning motor, and the tensioning motor is connected to the tensioning mechanism through the speed reduction mechanism, and one side of the main body is hinged on the base, and the tensioning mechanism is arranged on the main body and comprises a tensioning wheel, and the tensioning wheel is rotatably connected to the main body and connected to the output shaft of the speed reduction mechanism, and a lower tensioning plate is arranged on the base corresponding to the tensioning wheel, and the tensioning wheel and the lower tensioning plate are provided with sharp teeth for clamping into the strapping tape.

[0011] Optionally, the tensioning motor and the reduction mechanism are both arranged on the main body, a handle is connected to one side of the main body, the axis of the tensioning motor is arranged parallel to the handle, and the axis of the tensioning motor and the axis of the tensioning wheel are perpendicular to each other.

[0012] Optionally, a micro switch for controlling the reverse rotation of the tensioning motor is provided on the handle, one end of the handle is rotatably connected to the main body, and a limit pin connecting the two is passed through the handle and the main body, a limit hole with a hole diameter larger than the limit pin is opened on the main body, and the end of the limit pin is inserted into the limit hole, and the upward rotation angle of the handle triggers the micro switch to drive the tensioning motor to rotate in the opposite direction, and the main body is provided with a spring piece for driving the handle to flip down and reset.

[0013] Optionally, the welding mechanism includes a supporting connecting rod, an upper friction block and a lower friction plate, the lower friction plate is fixedly arranged on the base, the upper friction block is horizontally slidably connected to the supporting connecting rod, the end of the supporting connecting rod away from the upper friction block is hinged on the base, the driving source also includes a welding motor, a reciprocating connecting rod connecting the welding motor and the upper friction block is arranged between the two, one end of the reciprocating connecting rod is eccentrically arranged to the output end of the welding motor, and the other end is hinged to the upper friction block.

[0014] Optionally, the base is provided with a pressing sleeve which is vertically slidably connected and used to press the supporting connecting rod downward, the base is rotatably connected with a cam which drives the pressing sleeve to move downward, and the cam is provided with a pressing wrench.

[0015] Optionally, a cutter for cutting the strapping tape is provided at the bottom of the supporting connecting rod, and the cutter is vertically elastically connected to the supporting connecting rod.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The speed reduction mechanism achieves speed reduction through the transmission of the reduction gear set combined with the worm wheel and the worm, so that the input shaft and the output shaft are in a mutually perpendicular state. In this way, the overall volume can be smaller and the structure is more compact when the drive source is connected later. In addition, the worm wheel and the worm have a larger transmission ratio, the transmission is smooth and the noise is low, and a larger speed reduction ratio is achieved at the same time;

[0018] 2. The meshing part of the worm wheel and the worm adopts point contact or line contact, which has a smaller contact area, smaller friction resistance and noise, and further achieves the purpose of noise reduction;

[0019] 3. The handle of the baler is movably connected to the main body and combined with a micro switch. After the strapping tape is tightened and welded, the handle is properly flipped up to trigger the micro switch to reverse the tensioning wheel so that the sharp teeth are out of the strapping tape, avoiding the situation where the main body cannot be lifted up and opened due to the sharp teeth being stuck in the strapping tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of Example 1.

[0021] Figure 2 It is a structural diagram of Example 1 after the box is hidden.

[0022] Figure 3 This is the overall structural diagram of Example 2 from the first perspective.

[0023] Figure 4 This is the overall structural diagram of the second perspective of Example 2.

[0024] Figure 5 This is the overall structural diagram of the third perspective of Example 2.

[0025] Figure 6 It is a cross-sectional view of Example 2 at the pressing sleeve.

[0026] Description of reference numerals:

[0027] 1. Box; 2. Worm gear; 3. Worm; 4. Input shaft; 5. Output shaft; 6. First-stage reduction small teeth; 7. First-stage reduction large teeth; 8. Second-stage reduction small teeth; 9. Second-stage reduction large teeth; 10. Base; 11. Main body; 12. Tensioning mechanism; 13. Welding mechanism; 14. Speed ​​reduction mechanism; 15. Handle; 16. Tensioning motor; 17. Tension wheel; 18. Lower tension plate; 19. Pointed teeth; 20. First tension spring; 21 , limit pin; 22, micro switch; 23, spring; 24, supporting connecting rod; 25, upper friction block; 26, lower friction plate; 27, second tension spring; 28, welding motor; 29, reciprocating connecting rod; 30, cutter; 31, spring; 32, cutting teeth; 33, pressing sleeve; 34, cam; 35, pressing wrench; 36, pressing block; 37, vertical slot; 38, anti-slip part; 39, adjusting spring; 40, hinge shaft; 41, column. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-6 This application is described in further detail.

[0029] Example 1

[0030] A reduction mechanism, such as Figure 1-Figure 2 As shown, it includes a housing 1, a transmission gear, a worm wheel 2 and a worm 3. The housing 1 is rotatably connected with an input shaft 4 and an output shaft 5. The transmission gear includes a primary reduction gear set and a secondary reduction gear set, wherein the primary reduction gear set includes a primary reduction small tooth 6 and a primary reduction large tooth 7 meshing with each other, and the secondary reduction gear set includes a secondary reduction small tooth 8 and a secondary reduction large tooth 9 meshing with each other. The primary reduction small tooth 6 is installed and connected to the input shaft 4, and the secondary reduction small tooth 8 and the primary reduction large tooth 7 are connected by a key to achieve circumferential linkage. The secondary reduction large tooth 9 is installed and connected to the worm 3. The worm 3 and the worm wheel 2 The worm wheel 2 is meshed and installed on the output shaft 5, so that the driving source power is input through the input shaft 4, and then transmitted through the first-stage reduction small teeth 6 and the first-stage reduction large teeth 7 to achieve the first-stage reduction, and then through the second-stage reduction small teeth 8 and the second-stage reduction large teeth 9 to achieve the second-stage reduction, and finally transmitted to the output shaft 5 to output the power through the worm 3 and the worm wheel 2. The axis of the output shaft 5 is perpendicular to the axis of the input shaft 4. In this way, the overall volume can be smaller and the structure is more compact when used after the driving source is connected subsequently, and the worm wheel 2 and the worm 3 have a larger transmission ratio, the transmission is smooth and the noise is small, and a larger speed reduction ratio is achieved at the same time.

[0031] like Figure 1 and Figure 2 As shown, in this embodiment, the tooth portion of the worm wheel 2 adopts helical teeth, the meshing portion of the worm 3 is an arc surface, and the tooth portion of the worm wheel 2 and the meshing portion of the worm 3 are in point contact or line contact, which effectively reduces the contact area, thereby reducing the friction resistance and noise, and further achieving the purpose of noise reduction.

[0032] Example 2

[0033] A packaging machine, such as Figure 3-Figure 4 As shown, a base 10, a main body 11, a tensioning mechanism 12, a welding mechanism 13, a driving source and embodiment 1, wherein the driving source includes a tensioning motor 16, the output end of the tensioning motor 16 is connected to the input shaft 4 of the reduction mechanism 14, the output shaft 5 of the reduction mechanism 14 is connected to the tensioning mechanism 12, and the tensioning mechanism 12 is driven to work after the tensioning motor 16 is started and decelerated.

[0034] like Figure 3 and Figure 4As shown, one side of the main body 11 is hinged on the base 10 so that it can be turned upside down, and the hinge is connected by a hinge shaft 40, and a handle 15 is installed on one side of the main body 11. By holding the handle 15, the main body 11 can be driven to lift around the hinge shaft 40, wherein the tensioning motor 16 and the reduction mechanism 14 are both installed and fixed on the main body 11; the tensioning mechanism 12 includes a tensioning wheel 17, which is rotatably connected to the main body 11 and connected to the output shaft 5 of the reduction mechanism 14 and driven by it, and at the same time, a tensioning wheel 17 is fixedly arranged on the base 10 corresponding to the tensioning wheel 17 There is a lower tensioning plate 18, and sharp teeth 19 for being inserted into the strapping tape are convexly provided on the lower tensioning plate 18 and the tensioning wheel 17. In this way, the rotation of the tensioning wheel 17 can drive the strapping tape to move synchronously to achieve the purpose of tensioning. When the handle 15 lifts the main body 11, the tensioning wheel 17 and the lower tensioning plate 18 are separated to form a spacing space for the strapping tape to be placed. A first tension spring 20 is provided between the main body 11 and the base 10 to drive the main body 11 to flip down and reset. In this way, when the handle is released, the main body 11 will automatically flip down to achieve the tensioning wheel 17 to press the strapping tape onto the lower tensioning plate 18.

[0035] like Figure 3 and Figure 4 As shown, one end of the handle 15 is slightly movably connected to the main body 11, and one end of the handle 15 is rotatably connected to the main body 11. At the same time, a limit pin 21 is penetrated on the handle 15 to limit its rotation angle. The limit pin 21 passes through the handle 15 and is connected to the main body 11. A limit hole for the limit pin 21 to penetrate is opened on the main body 11. The aperture of the limit hole is slightly larger than the outer diameter of the limit pin 21. In this way, the handle 15 can be slightly rotated around the rotation point. After rotating to the limit, it can synchronously drive the main body 11 to perform an upward lifting operation. In addition, a micro switch 22 for controlling the reverse rotation of the tensioning motor 16 is provided on the handle 15. When the main body 11 needs to be lifted, the micro switch 22 can be used to control the reverse rotation of the tensioning motor 16. When the body 11 is lifted, the handle 15 first rotates appropriately around the rotation point relative to the main body 11 to trigger the micro switch 22. At this time, the tensioning motor 16 reverses appropriately to drive the tensioning wheel 17 to reverse, and the sharp teeth 19 on the tensioning wheel 17 are released from the strapping tape. Then the handle 15 drives the main body 11 to be lifted together, and the tensioning wheel 17 is separated from the strapping tape, thereby avoiding the situation where the main body 11 cannot be lifted up and opened due to the sharp teeth 19 being stuck in the strapping tape. In addition, a spring sheet 23 is provided between the main body 11 and the handle 15. The spring sheet 23 is used to drive the handle 15 to flip down and reset. When not in use, the spring sheet 23 is used to drive the handle 15 to return to the state of not triggering the micro switch 22.

[0036] like Figure 4 and Figure 5As shown, the welding mechanism 13 includes a supporting connecting rod 24, an upper friction block 25 and a lower friction plate 26. The lower friction plate 26 is fixedly mounted on the base 10. The upper friction block 25 is located above the lower friction plate 26 and is horizontally slidably connected to the supporting connecting rod 24. A space for placing the strapping tape is formed between the upper friction block 25 and the lower friction plate 26. When the strapping tape is placed, one end of the strapping tape is located between the upper friction block 25 and the lower friction plate 26, and the other end is located between the tensioning wheel 17 and the lower tensioning plate 18. The sliding direction of the upper friction block 25 is perpendicular to the length direction of the strapping tape. One end of the supporting connecting rod 24 is hinged on the base 10, and the upper friction block 25 is located on the end of the supporting connecting rod 24 away from the hinge. At the same time, a second tension spring 27 connecting the two is provided between the supporting connecting rod 24 and the base 10. The second tension spring 27 is used to drive the upper friction block 25 to move up and separate from the lower friction plate 26, so as to facilitate the horizontal placement of the strapping tape.

[0037] like Figure 4 and Figure 5 As shown, the driving source also includes a welding motor 28, and a reciprocating connecting rod 29 is arranged between the output end of the welding motor 28 and the upper friction block 25 to connect the two. One end of the reciprocating connecting rod 29 is eccentrically arranged with the output end of the welding motor 28, and the other end is hinged with the upper friction block 25. The welding motor 28 drives the upper friction block 25 to move horizontally back and forth, so that the continuous reciprocating friction generates heat to melt the packaging tape to achieve welding and fixation.

[0038] like Figure 5 As shown, a cutter 30 for cutting the strapping tape is also provided at the end of the supporting connecting rod 24, and the cutter 30 is vertically slidably connected to the supporting connecting rod 24. A spring 31 connecting the cutter 30 and the supporting connecting rod 24 is provided between the cutter 30 and the supporting connecting rod 24, and the spring 31 is used to realize the vertical elastic connection of the cutter 30 to the supporting connecting rod 24, so that it can be applicable to strapping tapes of different thicknesses, thereby improving practicality. Cutting teeth 32 are arranged at intervals at the bottom of the cutter 30, and the direction of the spacing distribution of the cutting teeth 32 is consistent with the horizontal reciprocating direction of the upper friction block 25, so that the strapping tape will be synchronously driven to move slightly during the reciprocating movement of the upper friction block 25, so that the strapping tape continues to move and is finally cut by the cutting teeth 32 injured by the cutter 30, and the purpose of cutting is simultaneously achieved while welding.

[0039] like Figure 5 and Figure 6As shown, a pressing sleeve 33 for pressing the supporting link 24 downward is vertically slidably connected to the base 10, and the supporting link 24 is driven downward by the pressing sleeve 33 to allow the upper friction block 25 to press the strapping tape onto the lower friction plate 26. At the same time, a cam 34 is rotatably connected to the base 10, and the cam 34 abuts against the pressing sleeve 33 to drive it downward. A pressing wrench 35 is fixedly provided on the cam 34 for facilitating its rotation. In this way, by turning the pressing wrench 35, the pressing sleeve 33 can be driven downward with the help of the cam 34 to press the end of the supporting link 24 downward, so that the upper friction block 25 can press the strapping tape tightly. The operation is simple and convenient.

[0040] like Figure 6 As shown, a pressure block 36 is provided inside the pressure sleeve 33 and is vertically movably connected to the pressure sleeve 33. The bottom of the pressure block 36 passes through the pressure sleeve 33 and is used to press the supporting connecting rod 24. The pressure sleeve 33 has a vertical groove 37 for the pressure block 36 to move vertically. The top of the pressure block 36 has an anti-slip portion 38 that is vertically slidably connected to the vertical groove 37. The top of the pressure sleeve 33 has a column 41 for abutting against the cam 34. An adjustment spring 39 connecting the column 41 and the pressure block 36 is provided between the two. Through this arrangement, the pressure block 36 and the supporting connecting rod 24 are not rigidly connected. When encountering straps of different thicknesses, they can be adaptively adjusted, which can meet the needs of use in more occasions and improve applicability.

[0041] The working principle of the embodiment of the present application is as follows: first, the main body 11 and the supporting connecting rod 24 are in an upward state, and then the strapping belt is placed between the tensioning wheel 17 and the lower tensioning plate 18, the upper friction block 25 and the lower friction plate 26, and then the handle 15 is loosened and the main body 11 is turned down under the action of the first tension spring 20, so that the tensioning wheel 17 presses the strapping belt onto the lower tensioning plate 18, and the tensioning motor 16 is turned on to drive the tensioning wheel 17 to rotate and drive the strapping belt to move to achieve tensioning. After the tensioning is completed, the pressing wrench 35 is operated and the cam 34 is used to drive one end of the supporting connecting rod 24 to move downward so that the upper friction block 25 presses the strapping belt onto the lower tensioning plate 18. The strap is pressed against the lower friction plate 26, and the welding motor 28 is turned on to drive the upper friction block 25 to move horizontally at a high frequency to achieve welding and fixing of the strapping tape. At the same time, the friction block drives the strapping tape to move sideways continuously so that the end of the strapping tape is cut off under the action of the cutter 30. After the welding and fixing is completed, the pressing wrench 35 is released and the supporting connecting rod 24 moves up and returns to its original position under the action of the second tension spring 27; then the handle 15 is held and rotated to trigger the microswitch 22 to reverse the tensioning motor 16. After the tensioning wheel 17 reverses, the main body 11 is lifted as a whole with the help of the handle 15, and finally the strapping tape can be taken out.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A speed reduction mechanism, characterized in that: The invention comprises a housing (1), a worm wheel (2) and a worm (3); a transmission gear is rotatably connected inside the housing (1); an input shaft (4) and an output shaft (5) are rotatably connected on the housing (1); the transmission gear drives the input shaft (4) and the worm (3); the worm (3) meshes with the worm wheel (2); the worm wheel (2) is fixed on the output shaft (5); and the output shaft (5) and the input shaft (4) are arranged perpendicularly to their axes.

2. A speed reduction mechanism according to claim 1, characterized in that: The tooth portion of the worm wheel (2) is helical, the meshing portion of the worm (3) is an arc surface, and the tooth portion of the worm wheel (2) and the meshing portion of the worm (3) are in point contact or line contact.

3. A speed reduction mechanism according to claim 1, characterized in that: The transmission gear comprises a primary reduction gear set and a secondary reduction gear set.

4. A speed reduction mechanism according to claim 3, characterized in that: The primary reduction gear set comprises a primary reduction pinion (6) and a primary reduction large tooth (7) meshing with each other, and the secondary reduction gear set comprises a secondary reduction pinion (8) and a secondary reduction large tooth (9) meshing with each other, the primary reduction pinion (6) being connected to the input shaft (4), the secondary reduction pinion (8) being circumferentially linked with the primary reduction large tooth (7), and the secondary reduction large tooth (9) being connected to the worm (3).

5. A baling machine, characterized in that: It comprises the deceleration mechanism (14) as described in any one of claims 1 to 4, and also comprises a base (10), a main body (11), a tensioning mechanism (12), a welding mechanism (13) and a driving source, wherein the driving source comprises a tensioning motor (16), the tensioning motor (16) is connected to the tensioning mechanism (12) through the deceleration mechanism (14), one side of the main body (11) is hinged on the base (10), the tensioning mechanism (12) is arranged on the main body (11) and comprises a tensioning wheel (17), the tensioning wheel (17) is rotatably connected to the main body (11) and is connected to the output shaft (5) of the deceleration mechanism (14), a lower tensioning plate (18) is arranged on the base (10) corresponding to the tensioning wheel (17), and the tensioning wheel (17) and the lower tensioning plate (18) are provided with sharp teeth (19) for clamping into the strapping tape.

6. A baling machine according to claim 5, characterized in that: The tensioning motor (16) and the speed reduction mechanism (14) are both arranged on the main body (11); a handle (15) is connected to one side of the main body (11); the axis of the tensioning motor (16) is arranged parallel to the handle (15); and the axis of the tensioning motor (16) is perpendicular to the axis of the tensioning wheel (17).

7. A baling machine according to claim 6, characterized in that: The handle (15) is provided with a micro switch (22) for controlling the tensioning motor (16) to rotate in the reverse direction. One end of the handle (15) is rotatably connected to the main body (11), and a limit pin (21) is inserted between the handle and the main body (11) to connect the two. The main body (11) is provided with a limit hole with a hole diameter larger than the limit pin (21), and the end of the limit pin (21) is inserted into the limit hole. When the handle (15) is lifted up and rotated to an angle, the micro switch (22) is triggered to drive the tensioning motor (16) to rotate in the reverse direction. The main body (11) is provided with a spring piece (23) for driving the handle (15) to flip down and reset.

8. A baling machine according to claim 5, characterized in that: The welding mechanism (13) comprises a supporting connecting rod (24), an upper friction block (25) and a lower friction plate (26), wherein the lower friction plate (26) is fixedly arranged on the base (10), and the upper friction block (25) is horizontally slidably connected to the supporting connecting rod (24), and one end of the supporting connecting rod (24) away from the upper friction block (25) is hinged on the base (10), and the driving source also comprises a welding motor (28), and a reciprocating connecting rod (29) connecting the welding motor (28) and the upper friction block (25) is arranged between the two, and one end of the reciprocating connecting rod (29) is eccentrically arranged with respect to the output end of the welding motor (28), and the other end is hinged with the upper friction block (25).

9. A baling machine according to claim 8, characterized in that: The base (10) is provided with a pressing sleeve (33) which is vertically slidably connected and used to press down the supporting connecting rod (24); the base (10) is rotatably connected with a cam (34) which drives the pressing sleeve (33) to move downward; and the cam (34) is provided with a pressing wrench (35).

10. A baling machine according to claim 8, characterized in that: A cutter (30) for cutting the packing tape is arranged at the bottom of the supporting connecting rod (24), and the cutter (30) is vertically elastically connected to the supporting connecting rod (24).

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