A baling press drive mechanism

Abstract

The utility model provides a kind of packing machine driving mechanism, comprising: basic swing bar and its control cam;Tension wheel swing bar assembly, tension wheel swing bar is connected with basic swing bar by first elastic mechanism, the swing of basic swing bar can drive tension wheel to be in the position of cooperation state with the tension belt of sending and returning belt driving wheel;Send and return belt pressure roller swing bar assembly, send and return belt pressure roller swing bar assembly is connected by second elastic mechanism and tension wheel swing bar assembly, send and return belt pressure roller swing bar swings with the swing of tension wheel swing bar, when tension wheel is in the position of disengagement state with sending and returning belt driving wheel, send and return belt pressure roller is in the position of cooperation state with the sending and returning belt driving wheel, when tension wheel is in the position of cooperation state with sending and returning belt driving wheel, send and return belt pressure roller is in the position of disengagement state with the sending and returning belt driving wheel.Sending and returning belt pressure roller, tension wheel switching state position are driven by the same set of power in the utility model, structure is simple, and big package angle can be realized.

Description

Technical Field

[0001] This utility model relates to the field of packaging machines, and in particular to a drive mechanism for a belt feeding and tensioning mechanism. Background Technology

[0002] A strapping machine is a device that uses strapping tape to bundle items. The entire strapping process involves several steps, including tape feeding, tape retraction, tensioning, and heat sealing. A tape feeding and tensioning device, consisting of a three-wheeled actuator, includes a tape feeding drive wheel, a tape feeding pressure wheel, and a tensioning wheel. The tape feeding pressure wheel and tensioning wheel rest against the tape feeding drive wheel during tape feeding and tensioning operations, respectively.

[0003] According to previous solutions, the feed and unfeed belt pressure rollers and tension rollers are driven by their respective drive mechanisms to enter and disengage from the feed and unfeed belt drive rollers. This results in a complex structure, large space occupation, high cost, and lack of compactness. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a solution that allows the same power source to drive the switching positions of the belt feed and tensioning rollers in the belt feeding and retraction devices described in the background art. To this end, this utility model adopts the following technical solution:

[0005] A strapping machine drive mechanism, the strapping machine including a tension wheel, a belt feed / retraction pressure wheel, and a belt feed / retraction drive wheel, wherein the belt feed / retraction pressure wheel and the belt feed / retraction drive wheel cooperate to form a belt feed / retraction wheel assembly, and the tension wheel and the belt feed / retraction drive wheel cooperate to form a tension wheel assembly; characterized in that the drive mechanism includes:

[0006] Basic rocker arm and its control cam;

[0007] The tension wheel rocker arm assembly includes a tension wheel rocker arm, wherein the tension wheel and its rotation drive mechanism are mounted on the tension wheel rocker arm, and the tension wheel rocker arm is connected to the base rocker arm through a first elastic mechanism. The swing of the base rocker arm can drive the tension wheel to a position that engages with the feed belt drive wheel tensioning the belt.

[0008] The feed-and-retreat belt pressure roller swing arm assembly includes a feed-and-retreat belt pressure roller swing arm, wherein the feed-and-retreat belt pressure roller is mounted on the feed-and-retreat belt pressure roller swing arm assembly. The feed-and-retreat belt pressure roller swing arm assembly is connected to the tensioning roller swing arm assembly through a second elastic mechanism. The feed-and-retreat belt pressure roller swing arm swings with the swing of the tensioning roller swing arm. When the tensioning roller is in a position disengaged from the feed-and-retreat belt drive wheel, the feed-and-retreat belt pressure roller is in a position engaged with the feed-and-retreat belt drive wheel. When the tensioning roller is in a position engaged with the feed-and-retreat belt drive wheel, the feed-and-retreat belt pressure roller is in a position disengaged from the feed-and-retreat belt drive wheel.

[0009] Based on the above technical solutions, the present invention may also adopt the following further technical solutions, or combine these further technical solutions:

[0010] The control cam is driven to rotate by the core motor of the packing machine. The tension wheel swing arm is rotatably mounted on the base via a first shaft, which is perpendicular to the rotation axis of the control cam. The feed and retraction pressure wheel swing arm is rotatably mounted on the base via a second shaft parallel to the first shaft.

[0011] The feed and return belt pressure roller swing arm is arranged around the first side and the upper part of the feed and return belt drive wheel. The tension roller swing arm is basically arranged along the left and right direction of the packing machine core. The tension roller is located directly below the feed and return belt drive wheel, while the feed and return belt pressure roller is located on the front side of the first side of the feed and return belt drive wheel.

[0012] The inner side of the feed and retraction belt pressure roller swing arm is provided with a guide surface that cooperates with the feed and retraction belt drive wheel. The tensioning wheel swing arm is also provided with a guide surface that cooperates with the feed and retraction belt drive wheel between the guide surfaces provided on the inner sides of the tensioning wheel and the feed and retraction belt pressure roller swing arm.

[0013] The tension wheel rocker arm is located below the base rocker arm. The tension wheel rocker arm assembly also includes a tension wheel rocker arm reset elastic element, which is used to drive the tension wheel to reset downward to a position disengaged from the feed and unload drive wheel, while the feed and unload pressure wheel rocker arm is located above the base rocker arm.

[0014] The first elastic mechanism employs an elastic link, including a first vertical link and a first elastic element. The lower end of the first vertical link is provided with a first limiting and lifting component for the tension wheel swing arm, and the upper end is provided with a second limiting and lifting component corresponding to the base swing arm. The first vertical link passes through the end of the tension wheel swing arm and the end of the base swing arm. The base swing arm acts on the first vertical link based on the first elastic element.

[0015] The first elastic element is a compression spring, which is sleeved outside the first vertical connecting rod and located between the basic swing arm and the second limiting and lifting components.

[0016] The second elastic mechanism employs a second vertical connecting rod and a second elastic element. The upper end of the second vertical connecting rod is provided with an upper limit member and a lower limit member. Through the downward movement of the second vertical connecting rod, the upper limit member drives the feed and return belt pressure roller swing arm to swing, causing the feed and return belt pressure roller to enter the position of engaging with the feed and return belt drive wheel. Through the upward movement of the second vertical connecting rod, the lower limit member drives the feed and return belt pressure roller swing arm to swing, causing the feed and return belt pressure roller to enter the position of disengaging from the feed and return belt drive wheel.

[0017] The second elastic element is a tension spring, with one end connected to the second vertical connecting rod and the other end connected to the tension wheel swing arm.

[0018] The basic swing arm is arranged along the front-rear direction of the packing machine core, located on the second side of the feed / retract belt drive wheel, with its end located on the back side of the base. The main body of the first elastic mechanism and the tension wheel swing arm is located on the back side of the base and cooperates with the basic swing arm. The tension wheel is located on the front side of the base, and the base is provided with a clearance groove. The main body of the tension wheel rotation drive mechanism is located on the back side of the base and is connected to the tension wheel through the clearance groove. The feed / retract belt pressure wheel swing arm is located on the front side of the base, and the feed / retract belt pressure wheel is located on the first side of the feed / retract belt drive wheel. The second elastic mechanism is located on the back side of the base. The feed / retract belt pressure wheel swing arm assembly is also provided with a top transverse connecting rod. One end of the top transverse connecting rod is connected to the feed / retract belt pressure wheel swing arm located on the front side. Alternatively, the second vertical connecting rod can pass through the other end of the top transverse connecting rod. The upper limit member and the lower limit member are located above and below the other end of the top transverse connecting rod, respectively.

[0019] In this invention, the first side and the second side of the feed-retract drive pulley are opposite sides of each other.

[0020] An upwardly inclined guide rail is also provided below the second side of the tensioning wheel, which is connected to the tensioning wheel.

[0021] By adopting the technical solution of this utility model, the present utility model uses the same set of power to drive the feeding and unloading pressure roller and tensioning roller to switch states and positions. The structure is simple and can achieve a large wrap angle. While ensuring the working effect of the tensioning belt, it can also provide a better feeding effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an embodiment of the present utility model.

[0023] Figure 2 This is a schematic diagram of a portion of the structure of an embodiment of the present utility model.

[0024] Figure 3 This is a schematic diagram of an embodiment of the present invention viewed from another angle.

[0025] Figure 4 This is a schematic diagram of a portion of the structure of an embodiment of the present utility model.

[0026] Figure 5 This is a rear view of a portion of the structure of an embodiment of the present utility model.

[0027] Figure 6 This is a front view of an embodiment of the present utility model.

[0028] Figure 7 This is an exploded view of a portion of the structure of an embodiment of this utility model. Detailed Implementation

[0029] Referring to the accompanying drawings, the present invention provides a driving mechanism for a packing machine, comprising a tensioning wheel 3, a belt feeding / retracting pressure wheel 2, and a belt feeding / retracting drive wheel 1. The belt feeding / retracting pressure wheel 2 and the belt feeding / retracting drive wheel 1 cooperate to form a belt feeding / retracting wheel assembly, and the tensioning wheel 3 and the belt feeding / retracting drive wheel 1 cooperate to form a tensioning wheel assembly. Reference numerals 10 and 30 in the accompanying drawings represent the drive motors for the belt feeding / retracting drive wheel 1 and the tensioning wheel 3, respectively, wherein the drive motor for the belt feeding / retracting drive wheel 1 is a bidirectional motor.

[0030] The drive mechanism includes:

[0031] The basic swing arm 4 and its control cam 40 are provided; a roller 41 that cooperates with the control cam 40 is provided on the basic swing arm, and the control cam 40 is driven to rotate by the core motor 200 of the baling machine. The control cam 40 is provided with a feeding and unfeeding cam surface and a tensioning cam surface along its circumference. The basic swing arm 4 is rotatably mounted on the base 100 via a shaft 42 and is arranged along the front-rear direction of the baling machine core.

[0032] The tension wheel rocker arm assembly includes a tension wheel rocker arm 51, which is rotatably mounted on the base 100 via a first shaft 53 and is arranged substantially along the left-right direction of the packing machine core. The first shaft 53 is perpendicular to the rotation axis of the control cam 40. The tension wheel 3 and its rotation drive mechanism (including a drive motor 30 and a reducer 31) are mounted on the tension wheel rocker arm 51. The tension wheel rocker arm assembly is connected to the base rocker arm 4 via a first elastic mechanism. The swing of the base rocker arm 4 can drive the tension wheel 3 to a position that engages with the feed and unfeed belt drive wheel 1 to tighten the belt.

[0033] The feed and return belt pressure roller swing arm assembly includes a feed and return belt pressure roller swing arm 61, which is rotatably mounted on a base 100 via a second shaft 62 parallel to a first shaft 53. The feed and return belt pressure roller swing arm 61 is arranged around a first side and the upper part of the feed and return belt drive wheel 1, and the inner surface of the feed and return belt pressure roller swing arm 61 is provided as a guide surface 611 that cooperates with the feed and return belt drive wheel 1. The feed and return belt pressure roller 2 is mounted on the feed and return belt pressure roller swing arm 61. The second elastic mechanism and the tensioning wheel swing arm 51 are connected. The feed and retraction belt pressure wheel swing arm 61 swings with the swing of the tensioning wheel swing arm 51. When the tensioning wheel 3 is in the position of being disengaged from the feed and retraction belt drive wheel 2, the feed and retraction belt pressure wheel 2 is in the position of being engaged with the feed and retraction belt drive wheel 1. When the tensioning wheel 3 is in the position of being engaged with the feed and retraction belt drive wheel 1, the feed and retraction belt pressure wheel 2 is in the position of being disengaged from the feed and retraction belt drive wheel 1. It can be disengaged or lightly attached.

[0034] A preferred configuration is as follows: the tension wheel rocker arm 51 is located below the base rocker arm 4, and the tension wheel rocker arm assembly further includes a tension wheel rocker arm reset elastic element 52 for driving the tension wheel 3 downwards to a position disengaged from the feed / retract belt drive wheel 1, while the feed / retract belt pressure wheel rocker arm is located above the base rocker arm 4. Preferably, with this configuration, the tension wheel 3 is positioned substantially directly below the feed / retract belt drive wheel 1, while the feed / retract belt pressure wheel 2 is positioned substantially on the front side of the first side of the feed / retract belt drive wheel 1, resulting in a better belt feeding effect. The tension wheel rocker arm 51 also has a guide surface 54 that mates with the feed / retract belt drive wheel 1 between the guide surface 611 provided on the inner side of the tension wheel 3 and the feed / retract belt pressure wheel rocker arm 61.

[0035] The first elastic mechanism can be an elastic link, including a first vertical link 71 and a first elastic element 72. The lower end of the first vertical link 71 is provided with a first limiting and lifting component 73 corresponding to the tension wheel swing arm 51, and the upper end is provided with a second limiting and lifting component 74 corresponding to the base swing arm 4. The first vertical link 71 passes through the end of the tension wheel swing arm 51 and the end of the base swing arm 4. The first elastic element 72 can be a compression spring, sleeved outside the first vertical link 71, and located between the base swing arm 4 and the second limiting and lifting component 74.

[0036] The second elastic mechanism can be a second vertical connecting rod 81 and a second elastic element 82. The upper end of the second vertical connecting rod 81 is provided with an upper limit member 811 and a lower limit member 812. By the downward movement of the second vertical connecting rod 81, the upper limit member 811 drives the feed and return belt pressure roller swing rod 61 to swing, so that the feed and return belt pressure roller enters the position of engaging with the feed and return belt drive wheel 1. By the upward movement of the second vertical connecting rod 81, the lower limit member 812 drives the feed and return belt pressure roller swing rod 61 to swing, so that the feed and return belt pressure roller enters the position of disengaging from the feed and return belt drive wheel 1.

[0037] The second elastic element 82 can be configured as a tension spring, with one end connected to the second vertical connecting rod 81 and the other end connected to the tension wheel swing rod 51.

[0038] As a compact solution that achieves the aforementioned technical effects, the basic swing arm 4 is arranged along the front-rear direction of the packing machine core, located on the second side of the feed / retract belt drive wheel 1. The end of the basic swing arm 4 is located on the back side of the base 100. The main body of the first elastic mechanism and the tension wheel swing arm 51 is located on the back side of the base 100 and cooperates with the basic swing arm 4. The tension wheel 3 is located on the front side of the base 100. The base is provided with a clearance groove 101. The main body of the tension wheel rotation drive mechanism is located on the back side of the base 100 and is connected to the tension wheel 3 through the clearance groove 101. The feed / retract belt pressure wheel swing arm 61 is located on the back side of the base 100. On the front side of the base 100, the feed and retraction belt pressure roller 2 is located on the first side of the feed and retraction belt drive roller 1, and the second elastic mechanism is located on the back side of the base 100. The feed and retraction belt pressure roller swing arm assembly is also provided with a top transverse connecting rod 63. One end of the top transverse connecting rod 63 is connected to the feed and retraction belt pressure roller swing arm 61 located on the front side. The second vertical connecting rod 81 passes through the other end of the top transverse connecting rod 63. The upper limit member 811 and the lower limit member 812 are located above and below the other end of the top transverse connecting rod 63, respectively. The first side and the second side of the feed and retraction belt drive roller 1 are opposite sides of the feed and retraction belt drive roller 1.

[0039] An upwardly inclined guide rail 9 is also provided below the second side of the tensioning wheel, which is connected to the tensioning wheel, so that the packing strap has a guide surface before entering the feed and return wheel, thus improving the feeding effect.

[0040] In the description of this utility model, it should be understood that the terms "one end," "the other end," "outer side," "inner side," "horizontal," "end," "length," "outer end," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are also used only for the sake of brevity in description and do not indicate or imply relative importance.

[0041] The above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the protection scope of the present utility model.

Claims

1. A driving mechanism for a baling machine, the baling machine comprising a tension wheel, a belt feeding / retracting pressure wheel, and a belt feeding / retracting drive wheel, wherein the belt feeding / retracting pressure wheel and the belt feeding / retracting drive wheel cooperate to form a belt feeding / retracting wheel assembly, and the tension wheel and the belt feeding / retracting drive wheel cooperate to form a tension wheel assembly; characterized in that, The drive mechanism includes: Basic rocker arm and its control cam; The tension wheel rocker arm assembly includes a tension wheel rocker arm, wherein the tension wheel and its rotation drive mechanism are mounted on the tension wheel rocker arm, and the tension wheel rocker arm is connected to the base rocker arm through a first elastic mechanism. The swing of the base rocker arm can drive the tension wheel to a position that engages with the feed belt drive wheel tensioning the belt. The feed-and-retreat belt pressure roller swing arm assembly includes a feed-and-retreat belt pressure roller swing arm, wherein the feed-and-retreat belt pressure roller is mounted on the feed-and-retreat belt pressure roller swing arm assembly. The feed-and-retreat belt pressure roller swing arm assembly is connected to the tensioning roller swing arm assembly through a second elastic mechanism. The feed-and-retreat belt pressure roller swing arm swings with the swing of the tensioning roller swing arm. When the tensioning roller is in a position disengaged from the feed-and-retreat belt drive wheel, the feed-and-retreat belt pressure roller is in a position engaged with the feed-and-retreat belt drive wheel. When the tensioning roller is in a position engaged with the feed-and-retreat belt drive wheel, the feed-and-retreat belt pressure roller is in a position disengaged from the feed-and-retreat belt drive wheel.

2. The packing machine drive mechanism as described in claim 1, characterized in that, The control cam is driven to rotate by the core motor of the packing machine. The tension wheel swing arm is rotatably mounted on the base via a first shaft, which is perpendicular to the rotation axis of the control cam. The feed and retraction pressure wheel swing arm is rotatably mounted on the base via a second shaft parallel to the first shaft.

3. The packing machine drive mechanism as described in claim 2, characterized in that, The feed and return belt pressure roller swing arm is arranged around the first side and the upper part of the feed and return belt drive wheel. The tension roller swing arm is basically arranged along the left and right direction of the packing machine core. The tension roller is located directly below the feed and return belt drive wheel, while the feed and return belt pressure roller is located on the front side of the first side of the feed and return belt drive wheel.

4. The packing machine drive mechanism as described in claim 3, characterized in that, The inner side of the feed and retraction belt pressure roller swing arm is provided with a guide surface that cooperates with the feed and retraction belt drive wheel. The tensioning wheel swing arm is also provided with a guide surface that cooperates with the feed and retraction belt drive wheel between the guide surfaces provided on the inner sides of the tensioning wheel and the feed and retraction belt pressure roller swing arm.

5. The packing machine drive mechanism as described in claim 1, characterized in that, The tension wheel rocker arm is located below the base rocker arm. The tension wheel rocker arm assembly also includes a tension wheel rocker arm reset elastic element, which is used to drive the tension wheel to reset downward to a position disengaged from the feed and unload drive wheel, while the feed and unload pressure wheel rocker arm is located above the base rocker arm.

6. The packing machine drive mechanism as described in claim 5, characterized in that, The first elastic mechanism employs an elastic link, including a first vertical link and a first elastic element. The lower end of the first vertical link is provided with a first limiting and lifting component corresponding to the tension wheel swing arm, and the upper end is provided with a second limiting and lifting component corresponding to the base swing arm. The first vertical link passes through the end of the tension wheel swing arm and the end of the base swing arm. The base swing arm acts on the first vertical link based on the first elastic element.

7. A packing machine drive mechanism as described in claim 6, characterized in that, The first elastic element is a compression spring, which is sleeved outside the first vertical connecting rod and located between the basic swing arm and the second limiting and lifting components.

8. The packing machine drive mechanism as described in claim 5, characterized in that, The second elastic mechanism employs a second vertical connecting rod and a second elastic element. The upper end of the second vertical connecting rod is provided with an upper limit member and a lower limit member. Through the downward movement of the second vertical connecting rod, the upper limit member drives the feed and return belt pressure roller swing arm to swing, causing the feed and return belt pressure roller to enter the position of engaging with the feed and return belt drive wheel. Through the upward movement of the second vertical connecting rod, the lower limit member drives the feed and return belt pressure roller swing arm to swing, causing the feed and return belt pressure roller to enter the position of disengaging from the feed and return belt drive wheel.

9. A packing machine drive mechanism as described in claim 8, characterized in that, The second elastic element is a tension spring, with one end connected to the second vertical connecting rod and the other end connected to the tension wheel swing arm.

10. A packing machine drive mechanism as described in claim 8, characterized in that, The basic swing arm is arranged along the front-rear direction of the packing machine core, located on the second side of the feed and return belt drive wheel, with its end located on the back side of the base. The main body of the first elastic mechanism and the tension wheel swing arm is located on the back side of the base and cooperates with the basic swing arm. The tension wheel is located on the front side of the base, and the base is provided with a clearance groove. The main body of the tension wheel rotation drive mechanism is located on the back side of the base and is connected to the tension wheel through the clearance groove. The feed and return belt pressure wheel swing arm is located on the front side of the base, and the feed and return belt pressure wheel is located on the first side of the feed and return belt drive wheel. The second elastic mechanism is located on the back side of the base. The feed and return belt pressure wheel swing arm assembly is also provided with a top transverse connecting rod. One end of the top transverse connecting rod is connected to the feed and return belt pressure wheel swing arm located on the front side, and the other end is connected to the second elastic mechanism located on the back side. The first side and the second side of the feed and return belt drive wheel are opposite sides of the feed and return belt drive wheel.

11. A packing machine drive mechanism as described in claim 8, characterized in that, The basic swing arm is arranged along the front-rear direction of the packing machine core, located on the second side of the feed and return belt drive wheel, with its end located on the back side of the base. The main body of the first elastic mechanism and the tension wheel swing arm is located on the back side of the base and cooperates with the basic swing arm. The tension wheel is located on the front side of the base, and the base is provided with a clearance groove. The main body of the tension wheel rotation drive mechanism is located on the back side of the base and is connected to the tension wheel through the clearance groove. The feed and return belt pressure wheel swing arm is located on the front side of the base, and the feed and return belt pressure wheel is located on the first side of the feed and return belt drive wheel. The second elastic mechanism is located on the back side of the base. The feed and return belt pressure wheel swing arm assembly is also provided with a top transverse connecting rod. One end of the top transverse connecting rod is connected to the feed and return belt pressure wheel swing arm located on the front side. The second vertical connecting rod passes through the other end of the top transverse connecting rod. The upper limit member and the lower limit member are located above and below the other end of the top transverse connecting rod, respectively. The first side and the second side of the feed and return belt drive wheel are opposite sides of the feed and return belt drive wheel.

12. A packing machine drive mechanism as described in claim 3, characterized in that, An upwardly inclined guide rail is also provided below the second side of the tensioning wheel, which is connected to the tensioning wheel.

Images