Clamping assembly, box holding mechanism and box making machine

Abstract

The utility model relates to the technical field of box making machines, in particular to a clamping assembly, a box holding mechanism and a box making machine, the clamping assembly comprises a mounting frame, a moving part, a clamping plate, a pressure sensor, an elastic part, a driving device and a controller; the moving part is slidably connected to the mounting frame in the first direction. The clamping plate is slidably connected to the moving part in the first direction. The pressure sensor is connected to the moving part, in the first direction, one end of the elastic part abuts against the pressure sensor, and the other end of the elastic part abuts against the clamping plate; the driving device is fixed to the mounting frame and is in transmission connection with the moving part so as to drive the moving part to reciprocate in the first direction, the pressure of the pressing plate on the box body can be detected through the sensor, and the controller controls the driving device to act according to output signals of the pressure sensor. When an output signal of the pressure sensor reaches a set threshold value, the driving device is controlled to stop, and therefore it is guaranteed that clamping force borne by the box body at the size upper limit or the size lower limit is consistent.

Description

Technical Field

[0001] This utility model relates to the field of box-making machine technology, and in particular to a clamping component, a box-holding mechanism, and a box-making machine. Background Technology

[0002] A box-making machine is an automated device used to efficiently and accurately produce various types of paper boxes. In the paper box production process, after the bottom of the formed paper box has been finished with the colored paper pasting process, the paper box needs to be transferred to the subsequent workstation by a box-holding mechanism to ensure the continuity of the next stage of processing.

[0003] A typical box-holding mechanism includes two relatively spaced clamping components, each consisting of a clamping plate and a pneumatic cylinder. The pneumatic cylinder drives the clamping head to move, clamping or releasing the box. The distance between the two clamping plates is adjusted by changing the extension length of the pneumatic cylinder to match the width or length of the box, ensuring the clamping plates apply appropriate clamping force and thus allowing the box-holding mechanism to smoothly hold the box. However, due to variations in cardboard thickness, crease position deviations, and paper feeding positioning deviations, different boxes of the same specification may have different width or length dimensions. To ensure the box-holding mechanism can smoothly hold all boxes, the extension length of the pneumatic cylinder needs to be adjusted based on the lower limit of the box's width or length. For boxes whose actual dimensions are at the upper limit of their width or length, the clamping plates may deform the box, leading to a decrease in box yield. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing clamping components use the extension and retraction length of the pneumatic cylinder to adjust the clamping force of the clamping plate on the box. For boxes whose actual size is at the upper limit of width or length, the clamping plate is prone to deforming the box.

[0005] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a clamping assembly having a first direction, including a mounting frame, a movable component, a clamping plate, a pressure sensor, an elastic component, a driving device, and a controller.

[0006] The movable component is slidably connected to the mounting bracket along the first direction;

[0007] The clamping plate is slidably connected to the moving member along the first direction;

[0008] The pressure sensor is connected to the moving member. In the first direction, one end of the elastic member abuts against the pressure sensor and the other end abuts against the clamping plate.

[0009] The driving device is fixed to the mounting bracket, and the driving device is connected to the moving part to drive the moving part to reciprocate along the first direction;

[0010] Both the pressure sensor and the drive device are electrically connected to the controller.

[0011] As a preferred embodiment, the clamping assembly further has a second direction perpendicular to the first direction, and the clamping assembly further includes a first guide rod and a second guide rod;

[0012] The axis of the first guide rod and the axis of the second guide rod are both arranged along the first direction;

[0013] In the second direction, the first guide rod, the elastic element, and the second guide rod are arranged at intervals in sequence.

[0014] In the first direction, one end of the first guide rod and one end of the second guide rod are both fixed to the clamping plate, and the other ends of the first guide rod and the second guide rod are both slidably connected to the moving member.

[0015] As a preferred embodiment, the clamping assembly further includes a first adjusting nut and a second adjusting nut;

[0016] The movable component has a first guide hole and a second guide hole. The end of the first guide rod away from the clamping plate slides through the first guide hole and is screwed with the first adjusting nut. The end of the second guide rod away from the clamping plate slides through the second guide hole and is screwed with the second adjusting nut.

[0017] As a preferred embodiment, the clamping assembly further includes a first locking screw and a second locking screw;

[0018] The first adjusting nut has a first locking hole, the axis of the first locking hole is arranged radially along the first adjusting nut, the first locking hole has an internal thread, and the first locking screw is threadedly fitted through the first locking hole;

[0019] The second adjusting nut has a second locking hole, the axis of which is arranged radially along the second adjusting nut. The second locking hole has an internal thread, and the second locking screw is threadedly fitted through the second locking hole.

[0020] As a preferred embodiment, the moving part is fixed with a mounting sleeve at one end facing the clamping plate, the pressure sensor is disposed in the mounting sleeve, the elastic element is a compression spring, one end of the compression spring is inserted into the mounting sleeve and abuts against the pressure sensor, the other end of the compression spring extends out of the mounting sleeve, and the end of the compression spring extending out of the mounting sleeve abuts against the clamping plate.

[0021] As a preferred embodiment, the mounting frame includes a first rod, a second rod, and a third rod;

[0022] The axis of the first rod is arranged along the second direction, and the axes of the second rod and the third rod are both arranged along the first direction; in the second direction, the second rod is fixed to one end of the first rod, and the third rod is fixed to the other end of the first rod;

[0023] The movable component is a rod, and the movable component and the first rod are arranged parallel to each other in the first direction; in the second direction, one end of the movable component is slidably connected to the second rod, and the other end of the movable component is slidably connected to the third rod.

[0024] The drive device is connected to the middle of the first rod.

[0025] As a preferred embodiment, the driving device includes a servo motor and a lead screw connected to the output end of the servo motor;

[0026] In the first direction, a threaded sleeve is fixedly connected to the end of the moving part facing away from the clamping plate, and the lead screw is threadedly inserted into the threaded sleeve.

[0027] As a preferred embodiment, the clamping assembly further includes a connecting plate connected to the mounting bracket. The connecting plate has a plurality of connecting holes, which are arranged sequentially at intervals along the first direction.

[0028] A box-holding mechanism includes the aforementioned clamping components and a connector. The connector has a first connecting portion and a second connecting portion, which are spaced apart in a first direction. Two mounting brackets for the clamping components are defined as a first mounting bracket and a second mounting bracket, with the first mounting bracket connected to the first connecting portion and the second mounting bracket connected to the second connecting portion.

[0029] A box-making machine includes the aforementioned box-holding mechanism.

[0030] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0031] The clamping assembly of this utility model includes a mounting frame, a movable component, a clamping plate, a pressure sensor, an elastic component, a driving device, and a controller. The movable component is slidably connected to the mounting frame along a first direction. The clamping plate is slidably connected to the movable component along the first direction. The pressure sensor is connected to the movable component. In the first direction, one end of the elastic component abuts against the pressure sensor, and the other end abuts against the clamping plate. The driving device is fixed to the mounting frame and is connected to the movable component to drive the movable component to reciprocate along the first direction. The movement of the movable component along the first direction causes the clamping plate to press against the box. The elastic component can buffer the impact of the clamping plate on the box. The sensor can detect the pressure of the clamping plate on the box. The pressure sensor can convert the detection signal into an output signal such as a voltage value or a current value and feed it back to the controller. The controller controls the action of the driving device according to the output signal of the pressure sensor. When the output signal of the pressure sensor reaches a set threshold, the controller controls the driving device to stop, thereby ensuring that the clamping force on the box at the upper or lower limit of the size is consistent, avoiding the clamping plate from deforming the box at the upper or lower limit of the size, and improving the box yield. Attached Figure Description

[0032] Figure 1 This is an isometric view of the clamping assembly of this utility model;

[0033] Figure 2 This is a top view of the clamping assembly of this utility model;

[0034] Figure 3 This is a bottom view of the clamping assembly of this utility model;

[0035] Figure 4 This is a front view of the clamping assembly of this utility model;

[0036] Figure 5 for Figure 4 Sectional view along the AA direction;

[0037] Figure 6 This is a schematic diagram of the box-holding mechanism of this utility model;

[0038] In the diagram, X represents the first direction, Y represents the second direction, 1 is the mounting bracket, 11 is the first rod, 12 is the second rod, 13 is the third rod, 2 is the moving part, 3 is the clamping plate, 4 is the pressure sensor, 5 is the elastic element, 6 is the drive device, 61 is the servo motor, 62 is the lead screw, 71 is the first guide rod, 72 is the second guide rod, 73 is the first adjusting nut, 74 is the second adjusting nut, 75 is the first locking screw, 76 is the second locking screw, 81 is the mounting sleeve, 82 is the threaded sleeve, 9 is the connecting plate, 91 is the connecting hole, 100 is the connecting part, 101 is the first connecting part, and 102 is the second connecting part. Detailed Implementation

[0039] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0040] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are 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, and therefore should not be construed as a limitation of this utility model. It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms; these terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0041] like Figures 1 to 5 As shown, in a preferred embodiment of the clamping assembly of this utility model, the clamping assembly has a first direction X. The clamping assembly includes a mounting frame 1, a movable member 2, a clamping plate 3, a pressure sensor 4, a driving device 6, and a controller. The movable member 2 is slidably connected to the mounting frame 1 along the first direction X. The clamping plate 3 is slidably connected to the movable member 2 along the first direction X. The pressure sensor 4 is connected to the movable member 2. In the first direction X, one end of the elastic member 5 abuts against the pressure sensor 4, and the other end abuts against the clamping plate 3. The driving device 6 is fixed to the mounting frame 1 and is connected to the movable member 2 to drive the movable member 2 to reciprocate along the first direction X. Both the pressure sensor 4 and the driving device 6 are electrically connected to the controller. In use, the drive device 6 drives the moving part 2 to move forward along the first direction X. The moving part 2 drives the clamping plate 3, the elastic element 5, and the pressure sensor 4 to move forward synchronously along the first direction X. After the clamping plate 3 contacts the box, it stops moving due to the obstruction of the box. At this time, the drive device 6 continues to drive the moving part 2 to move forward along the first direction X. Relative sliding occurs between the clamping plate 3 and the moving part 2, the elastic element 5 is compressed, and the pressure is transmitted to the pressure sensor 4. The pressure sensor 4 converts the pressure value into a voltage value or a current value and feeds it back to the controller. When the voltage value or current value sent by the pressure sensor 4 to the controller reaches a set threshold, the controller sends an electrical signal to the drive device 6 to stop the drive device 6. Therefore, the clamping assembly of this utility model can control the action of the drive device 6 according to the detection value of the pressure sensor 4. When the test value of the pressure sensor 4 reaches the set threshold, the drive device 6 is controlled to stop, thereby ensuring that the clamping force on the box at the upper or lower limit of the size is consistent, avoiding the clamping plate 3 from deforming the box at the upper or lower limit of the size, and improving the box yield.

[0042] In this embodiment, the clamping assembly also has a second direction Y perpendicular to the first direction X. The clamping assembly further includes a first guide rod 71 and a second guide rod 72. The axis of the first guide rod 71 and the axis of the second guide rod 72 are both arranged along the first direction X. In the second direction Y, the first guide rod 71, the elastic element 5, and the second guide rod 72 are arranged sequentially at intervals. In the first direction X, one end of the first guide rod 71 and one end of the second guide rod 72 are both fixed to the clamping plate 3, and the other ends of the first guide rod 71 and the second guide rod 72 are slidably connected to the moving member 2. The first guide rod 71 and the second guide rod 72 are both round rods. The arrangement of the second guide rod 72 of the first guide rod 71 ensures that the clamping plate 3 can smoothly slide relative to the moving member 2 along the first direction X after being subjected to the reaction force of the box.

[0043] In this embodiment, the clamping assembly further includes a first adjusting nut 73 and a second adjusting nut 74; the moving part 2 has a first guide hole and a second guide hole, the end of the first guide rod 71 away from the clamping plate 3 slides through the first guide hole and is screwed to the first adjusting nut 73, and the end of the second guide rod 72 away from the clamping plate 3 slides through the second guide hole and is screwed to the second adjusting nut 74. By rotating the first adjusting nut 73 and the second adjusting nut 74, the preload of the clamping plate 3 on the elastic member 5 can be adjusted, ensuring the structural stability of the clamping assembly.

[0044] Furthermore, the clamping assembly also includes a first locking screw 75 and a second locking screw 76; the first adjusting nut 73 has a first locking hole, the axis of which is arranged radially along the first adjusting nut 73, and the first locking hole has an internal thread, with the first locking screw 75 threadedly passing through the first locking hole; the second adjusting nut 74 has a second locking hole, the axis of which is arranged radially along the second adjusting nut 74, and the second locking hole has an internal thread, with the second locking screw 76 threadedly passing through the second locking hole. For a box with specific specifications, after the first adjusting nut 73 and the second adjusting nut 74 are adjusted into place, tightening the first locking screw 75 and the second locking screw 76 can prevent the first adjusting nut 73 from loosening on the first guide rod 71 and prevent the second adjusting nut 74 from loosening on the second guide rod 72.

[0045] In this embodiment, a mounting sleeve 81 is fixed to one end of the movable component 2 facing the clamping plate 3. The pressure sensor 4 is disposed in the mounting sleeve 81. The elastic component 5 is a compression spring. One end of the compression spring is inserted into the mounting sleeve 81 and abuts against the pressure sensor 4. The other end of the compression spring extends out of the mounting sleeve 81, and the end of the compression spring extending out of the mounting sleeve 81 abuts against the clamping plate 3. The mounting sleeve 81 is a circular sleeve. The setting of the mounting sleeve 81 improves the connection stability of the compression spring and the pressure sensor 4 on the movable component 2.

[0046] In this embodiment, the mounting frame 1 includes a first rod 11, a second rod 12, and a third rod 13; the first rod 11, the second rod 12, and the third rod 13 are all rectangular or square rods. The axis of the first rod 11 is arranged along the second direction Y, and the axes of the second rod 12 and the third rod 13 are both arranged along the first direction X; in the second direction Y, the second rod 12 is fixed to one end of the first rod 11, and the third rod 13 is fixed to the other end of the first rod 11; the moving part 2 is a rod, and the moving part 2... The first rod 11 and the third rod 13 are arranged parallel to each other in the first direction X. In the second direction Y, one end of the moving part 2 is slidably guided to the second rod 12, and the other end of the moving part 2 is slidably guided to the third rod 13. This ensures smooth sliding of the moving part 2 on the mounting frame 1. The driving device 6 is connected to the middle of the first rod 11 and is located between the moving part 2 and the first rod 11. In the first direction X, the first rod 11, the driving device 6, the moving part 2, the mounting sleeve 81, and the clamping plate 3 are arranged sequentially. Specifically, guide blocks are fixed at both ends of the moving part 2. The second rod 12 and the third rod 13 in the second direction Y are provided with guide grooves along the first direction X on the side facing the moving part 2. Each guide block is slidably disposed in the corresponding guide groove.

[0047] In this embodiment, the driving device 6 includes a servo motor 61 and a lead screw 62 connected to the output end of the servo motor 61. In the first direction X, a threaded sleeve 82 is fixedly connected to the end of the moving member 2 facing away from the clamping plate 3, and the lead screw 62 is threadedly inserted into the threaded sleeve 82. When the servo motor 61 rotates in the forward direction, it can drive the threaded sleeve 82 to move away from the driving device 6, thereby causing the moving member 2 to move forward in the first direction X, thus clamping the box. When the servo motor 61 rotates in the reverse direction, it can drive the threaded sleeve 82 to move closer to the driving device 6, thereby causing the moving member 2 to move backward in the first direction X, thus releasing the box. It should be noted that during the clamping or releasing of the box, the movement stroke of the clamping plate 3 is very small. The structural design of the servo motor 61, the lead screw 62, and the threaded sleeve makes the movement accuracy of the clamping plate 3 higher than that of a cylinder drive.

[0048] In summary, the clamping assembly of this utility model includes a mounting frame 1, a movable component 2, a clamping plate 3, a pressure sensor 4, a driving device 6, and a controller; the movable component 2 is slidably connected to the mounting frame 1 along the first direction X; the clamping plate 3 is slidably connected to the movable component 2 along the first direction X; the pressure sensor 4 is connected to the movable component 2, and along the first direction X, one end of the elastic component 5 abuts against the pressure sensor 4, and the other end abuts against the clamping plate 3; the driving device 6 is fixed to the mounting frame 1, and the driving device 6 is connected to the movable component 2 to drive the movable component 2 to reciprocate along the first direction X. 2. Moving along the first direction X causes the clamping plate 3 to press against the box. The elastic element 5 can buffer the impact of the clamping plate 3 on the box. The pressure of the clamping plate on the box can be detected by the sensor. The pressure sensor 4 feeds back the detection signal to the controller. The controller can control the action of the drive device 6 according to the detection value of the pressure sensor 4. When the test value of the pressure sensor 4 reaches the set threshold, the drive device 6 is controlled to stop, thereby ensuring that the clamping force on the box at the upper or lower limit of the size is consistent, avoiding the clamping plate 3 from deforming the box at the upper or lower limit of the size, and improving the box yield.

[0049] In this embodiment, the clamping assembly further includes a connecting plate 9, which is connected to the mounting frame 1. The connecting plate 9 has multiple connecting holes 91, which are arranged sequentially at intervals along the first direction X. The multiple connecting holes 91 allow the installation position of the clamping assembly on the box-making machine to be adjusted along the first direction X. When changing the box specifications, a suitable connecting hole 91 is selected to achieve a coarse adjustment of the distance between the two clamping plates 3, and then the distance between the two clamping plates 3 is finely adjusted by the servo motor 61. This arrangement allows the reciprocating travel of the clamping plates 3 to be set smaller during clamping operations, shortening the working time of each clamping action of the clamping assembly and improving productivity.

[0050] An embodiment of a box-holding mechanism, such as Figure 6 As shown, the device includes two clamping assemblies as described above, and also includes a connector 100. The connector 100 has a first connecting portion 101 and a second connecting portion 102, which are arranged at a distance in a first direction X. The mounting brackets 1 of the two clamping assemblies are defined as a first mounting bracket and a second mounting bracket, respectively. The first mounting bracket is connected to the first connecting portion 101, and the second mounting bracket is connected to the second connecting portion 102.

[0051] An embodiment of a box-making machine includes the aforementioned box-holding mechanism. The box-making machine is equipped with a drive mechanism for switching the holding mechanism between two or more workstations, thereby enabling the transfer of the box body between multiple workstations.

[0052] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A clamping assembly having a first direction (X), characterized in that, It includes a mounting bracket (1), a moving part (2), a clamping plate (3), a pressure sensor (4), an elastic part (5), a drive device (6), and a controller; The movable component (2) is slidably connected to the mounting bracket (1) along the first direction (X); The clamping plate (3) is slidably connected to the moving part (2) along the first direction (X); The pressure sensor (4) is connected to the moving part (2). In the first direction (X), one end of the elastic part (5) abuts against the pressure sensor (4) and the other end abuts against the clamping plate (3). The driving device (6) is fixed to the mounting bracket (1), and the driving device (6) is connected to the moving part (2) to drive the moving part (2) to reciprocate along the first direction (X); Both the pressure sensor (4) and the drive device (6) are electrically connected to the controller.

2. The clamping assembly according to claim 1, characterized in that, The clamping assembly also has a second direction (Y) perpendicular to the first direction (X), and the clamping assembly further includes a first guide rod (71) and a second guide rod (72); The axis of the first guide rod (71) and the axis of the second guide rod (72) are both arranged along the first direction (X); In the second direction (Y), the first guide rod (71), the elastic element (5), and the second guide rod (72) are arranged at intervals in sequence; In the first direction (X), one end of the first guide rod (71) and one end of the second guide rod (72) are fixed to the clamping plate (3), and the other end of the first guide rod (71) and the other end of the second guide rod (72) are slidably connected to the moving part (2).

3. The clamping assembly according to claim 2, characterized in that, The clamping assembly also includes a first adjusting nut (73) and a second adjusting nut (74); The moving part (2) has a first guide hole and a second guide hole. The end of the first guide rod (71) away from the clamping plate (3) slides through the first guide hole and is screwed to the first adjusting nut (73). The end of the second guide rod (72) away from the clamping plate (3) slides through the second guide hole and is screwed to the second adjusting nut (74).

4. The clamping assembly according to claim 3, characterized in that, The clamping assembly also includes a first locking screw (75) and a second locking screw (76); The first adjusting nut (73) has a first locking hole, the axis of the first locking hole is arranged radially along the first adjusting nut (73), the first locking hole has an internal thread, and the first locking screw (75) is threadedly fitted through the first locking hole; The second adjusting nut (74) has a second locking hole, the axis of which is arranged radially along the second adjusting nut (74), the second locking hole has an internal thread, and the second locking screw (76) is threadedly fitted through the second locking hole.

5. The clamping assembly according to claim 2, characterized in that, The movable part (2) is fixed with a mounting sleeve (81) at one end facing the clamping plate (3). The pressure sensor (4) is disposed in the mounting sleeve (81). The elastic part (5) is a compression spring. One end of the compression spring is inserted into the mounting sleeve (81) and abuts against the pressure sensor (4). The other end of the compression spring extends out of the mounting sleeve (81). The end of the compression spring extending out of the mounting sleeve (81) abuts against the clamping plate (3).

6. The clamping assembly according to claim 2, characterized in that, The mounting frame (1) includes a first rod (11), a second rod (12), and a third rod (13); The axis of the first rod (11) is arranged along the second direction (Y), and the axes of the second rod (12) and the third rod (13) are both arranged along the first direction (X); in the second direction (Y), the second rod (12) is fixed to one end of the first rod (11), and the third rod (13) is fixed to the other end of the first rod (11); The movable component (2) is a rod, and the movable component (2) and the first rod (11) are arranged parallel to each other in the first direction (X); in the second direction (Y), one end of the movable component (2) is slidably connected to the second rod (12), and the other end of the movable component (2) is slidably connected to the third rod (13). The drive device (6) is connected to the middle of the first rod (11).

7. The clamping assembly according to claim 1, characterized in that, The drive device (6) includes a servo motor (61) and a lead screw (62) connected to the output end of the servo motor (61); In the first direction (X), the moving part (2) is fixedly connected to a threaded sleeve (82) at one end facing away from the clamping plate (3), and the lead screw (62) is threadedly inserted into the threaded sleeve (82).

8. The clamping assembly according to claim 7, characterized in that, The clamping assembly further includes a connecting plate (9), which is connected to the mounting bracket (1). The connecting plate (9) has a plurality of connecting holes (91), which are arranged sequentially at intervals along the first direction (X).

9. A box-holding mechanism, characterized in that, The clamping assembly includes two clamping components according to any one of claims 1 to 8, and further includes a connector (100) having a first connecting portion (101) and a second connecting portion (102) arranged at a distance in a first direction (X); The two mounting brackets (1) of the clamping components are defined as a first mounting bracket and a second mounting bracket, the first mounting bracket being connected to the first connecting part (101) and the second mounting bracket being connected to the second connecting part (102).

10. A box-making machine, characterized in that, Includes the box-holding mechanism as described in claim 9.

Images