A winding and unwinding mechanism for a printing apparatus

Abstract

This utility model belongs to the technical field of winding and unwinding mechanisms, and particularly relates to a winding and unwinding mechanism for a printing device. It includes a base and two supporting components, each comprising a fixed frame, a support component, and an adjusting component. The fixed frame is movably mounted on the base along the X-axis. The support component is rotatably mounted on the fixed frame and radially expands and contracts to connect to the roll. The adjusting component is mounted on the support component to control its radial expansion and contraction. A transmission component is mounted on the base to control the movement of the two fixed frames. A control component is mounted on one fixed frame to control the rotation of the correspondingly connected support component. The advantages of this utility model are that the distance between the two support components can be adjusted to accommodate rolls of different lengths, and the radial radius of the support component can be adjusted to accommodate different connection hole sizes at the roll ends, resulting in high practicality.

Description

Technical Field

[0001] This utility model belongs to the technical field of winding and unwinding mechanisms, and particularly relates to a winding and unwinding mechanism for a printing device. Background Technology

[0002] Currently, in the printing production process, unwinding and rewinding mechanisms are generally used to unwind the flexible materials to be printed and to rewind the flexible materials after printing.

[0003] In the existing technology, most winding mechanisms used in printing equipment typically have fixing components that can only be adapted to a single length of roll. When printing flexible materials of different widths, the roll length required by the winding and unwinding mechanism and the size of the connecting hole at the end of the roll are also different. This means that the winding and unwinding mechanism must be replaced, which wastes time and affects production efficiency. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned technical problems by providing a winding and unwinding mechanism for a printing apparatus.

[0005] In view of this, the present invention provides a winding and unwinding mechanism for a printing apparatus, including a base, and further comprising:

[0006] Two load-bearing components are provided. Each load-bearing component includes a fixed frame, a support component, and an adjusting component. The fixed frame is movable on the base in the X direction. The support component is rotatably mounted on the fixed frame and can be radially contracted and expanded for connecting the drum. The adjusting component is mounted on the support component for controlling the radial contraction and expansion of the support component.

[0007] A transmission assembly, mounted on a base, is used to control the movement of the two fixed frames;

[0008] A control component, mounted on a fixed frame, is used to control the rotation of the corresponding connected support components;

[0009] The supporting components include a fixed base, a telescopic rod, and four movable plates. The fixed base is rotatably mounted on the fixed frame, the telescopic rod is mounted on the fixed base, and the four movable plates are all radially movable and set on the adjusting components and connected to the telescopic rod.

[0010] Furthermore, the four active plates are arranged in a ring array.

[0011] Furthermore, the adjusting component includes:

[0012] The first bidirectional screw is rotatably mounted on the fixed base and is arranged along the Z direction, and is used to control two oppositely arranged movable plates to move closer and further apart along the Z direction.

[0013] The second bidirectional screw, which is rotatably mounted on the fixed base and arranged along the Y direction, is used to control the other two oppositely arranged movable plates to move closer and further apart along the Y direction.

[0014] Furthermore, the adjustment component also includes:

[0015] Two locking elements are mounted on a fixed base and are used to restrict the rotation of the first and second bidirectional screws, respectively.

[0016] Furthermore, both locking components are locking screws.

[0017] Furthermore, it also includes:

[0018] A lifting assembly, which is movable along the Z-axis and mounted on the base, is used to transport the drum.

[0019] Furthermore, the lifting components include:

[0020] The support base is movably mounted on the base along the Z-axis;

[0021] A lifting cylinder is mounted on the base to drive the support base to move.

[0022] The support base is equipped with a storage slot for placing the roll.

[0023] Furthermore, the transmission components include:

[0024] The third bidirectional screw is rotatably mounted on the base;

[0025] A guide rod is rotatably mounted on the base and extends through two fixed brackets;

[0026] A drive motor, mounted on a base, is used to control the rotation of the third bidirectional screw;

[0027] The two fixing brackets are respectively threadedly connected to the two threaded sections of the third bidirectional screw.

[0028] The beneficial effects of this utility model are:

[0029] The transmission assembly drives the two fixed frames to move closer or further apart, allowing the spacing between the two support components to be adjusted to accommodate drums of different lengths. The support component consists of a fixed base, a telescopic rod, and four movable plates. The adjustment mechanism allows the four movable plates to move radially, thereby adjusting the radial radius of the support component to accommodate different connection hole sizes at the drum ends, making it highly practical. Attached Figure Description

[0030] Figure 1This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the internal structure of the telescopic rod of this utility model;

[0032] The markings in the diagram are as follows:

[0033] 1. Base; 2. Fixing frame; 3. Fixing seat; 4. Telescopic rod; 41. Fixing sleeve; 42. Fixing rod; 43. Spring; 5. Movable plate; 6. First double-acting screw; 7. Second double-acting screw; 8. Locking element; 9. Support seat; 10. Lifting cylinder; 11. Storage slot; 12. Third double-acting screw; 13. Guide rod; 14. Drive motor. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0036] Example 1:

[0037] This embodiment provides a winding and unwinding mechanism for a printing apparatus, including a base 1, and further comprising:

[0038] Two load-bearing components are provided. Each load-bearing component includes a fixed frame 2, a support component, and an adjusting component. The fixed frame 2 is movable on the base 1 in the X direction. The support component is rotatably mounted on the fixed frame 2 and is radially contractible and expandable for connecting the drum. The adjusting component is mounted on the support component for controlling the radial contraction and expansion of the support component.

[0039] A transmission assembly is mounted on the base 1 to control the movement of the two fixed frames 2;

[0040] A control component, mounted on a fixed frame 2, is used to control the rotation of the corresponding connected support components;

[0041] The supporting components include a fixed base 3, a telescopic rod 4, and four movable plates 5. The fixed base 3 is rotatably mounted on the fixed frame 2, the telescopic rod 4 is mounted on the fixed base 3, and the four movable plates 5 can be radially moved and set on the adjusting components and connected to the telescopic rod 4.

[0042] Furthermore, it also includes:

[0043] A lifting assembly is mounted on the base 1 in the Z direction for transporting the drum.

[0044] Furthermore, the lifting components include:

[0045] Support base 9, which is movable along the Z direction and mounted on base 1;

[0046] Lifting cylinder 10, which is mounted on base 1 to drive support base 9 to move;

[0047] The support base 9 is provided with a storage slot 11 for placing the roll.

[0048] In this technical solution, when the winding and unwinding mechanism is working, the roll is transported and placed in the storage slot 11 of the support base 9. The lifting cylinder 10 drives the support base 9 to move along the Z direction, thereby realizing the movement of the roll in the Z direction and raising the roll along the Z direction to a position horizontal with the support component. Then, the transmission component drives the two fixed frames 2 to move closer to each other, and the support components on the two fixed frames 2 respectively extend into the connecting holes at both ends of the roll's axial direction. The telescopic rod 4 consists of a fixed sleeve 41, a fixed rod 42, and a spring 43. The fixed rod 42 is mounted on the fixed base 3, and the fixed sleeve 41 is slidably sleeved on the fixed rod 43. 2. A spring 43 is provided between the fixed sleeve 41 and the fixed rod 42. The fixed sleeve 41 is connected to the four movable plates 5 through two swing arms. The four movable plates 5 are driven to move radially by the control and adjustment components, which drives the fixed sleeve 41 to move on the fixed rod 42, so that the support component expands radially as a whole. The four movable plates 5 press against the drum radially, so that the drum is connected and fixed on the fixed frame 2. Then, the fixed seat 3 is driven to rotate by the control components. The control components can be a pulley plus a motor or a single motor. It is sufficient to realize the slow rotation of the drum, so as to carry out winding or unwinding operations.

[0049] Through the above structural design, the transmission component drives the two fixed frames 2 to move closer or further apart, so that the distance between the two support components can be adjusted to meet the needs of drums of different lengths. The support component consists of a fixed base 3, a telescopic rod 4 and four movable plates 5. The adjustment component can adjust the four movable plates 5 to move radially, so that the radial radius of the support component can be adjusted to meet the different connection hole sizes at the end of the drum, which is highly practical.

[0050] Example 2:

[0051] This embodiment provides a winding and unwinding mechanism for a printing apparatus, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0052] Furthermore, the four active plates 5 are arranged in a ring array.

[0053] This structural design allows the four movable plates 5 to be evenly distributed within the connection holes of the drum, ensuring that the drum's inner wall experiences uniform force when the movable plates 5 abut against the connection hole, thereby improving connection stability and effectively preventing drum slippage.

[0054] Example 3:

[0055] This embodiment provides a winding and unwinding mechanism for a printing apparatus, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0056] Furthermore, the adjusting component includes:

[0057] The first bidirectional screw 6 is rotatably mounted on the fixed base 3 and is arranged along the Z direction, and is used to control the two oppositely arranged movable plates 5 to move closer and further apart along the Z direction.

[0058] The second bidirectional screw 7 is rotatably mounted on the fixed base 3 and is arranged along the Y direction. It is used to control the other two oppositely arranged movable plates 5 to move closer and further apart along the Y direction.

[0059] In this technical solution, the fixed base 3 is provided with four sliding grooves, and one end of each of the four movable plates 5 is respectively set in the four sliding grooves and threadedly connected to the corresponding threaded section. Through this structural design, the operator can drive the two oppositely arranged connections to move closer or further apart by rotating the first bidirectional screw 6 and the second bidirectional screw 7, thereby realizing the radial contraction and expansion of the support component.

[0060] In addition, a scale line can be set at the slide groove of the fixed seat 3 to help operators understand the distance between each movable plate 5 and the telescopic rod 4, ensuring that each movable plate 5 can abut against the inner wall of the connection hole of the drum, thus ensuring the connection is stable.

[0061] Furthermore, the adjustment component also includes:

[0062] Two locking elements 8 are mounted on the fixed base 3 and are used to restrict the rotation of the first bidirectional screw 6 and the second bidirectional screw 7, respectively. By setting the locking elements 8, the first bidirectional screw 6 and the second bidirectional screw 7 can be locked and fixed, preventing stripping of the threads and affecting the contact stability between the movable plate 5 and the inner wall of the connection hole of the drum. Furthermore, both locking elements 8 are locking screws. By rotating the locking screws, the tail of the locking screw abuts against the first bidirectional screw 6 and the second bidirectional screw 7, thereby locking the first bidirectional screw 6 and the second bidirectional screw 7.

[0063] Example 4:

[0064] Furthermore, the transmission components include:

[0065] The third bidirectional screw 12 is rotatably mounted on the base 1;

[0066] Guide rod 13 is rotatably mounted on base 1 and passes through two fixing brackets 2;

[0067] Drive motor 14, which is mounted on base 1, is used to control the rotation of third bidirectional screw 12.

[0068] Among them, the two fixing brackets 2 are respectively threadedly connected to the two threaded sections of the third bidirectional screw 12.

[0069] In this technical solution, the two fixed frames 2 can be moved closer or further apart along the X direction by using the drive motor 14 to drive the third bidirectional screw 12 to rotate. Through this structural design, the two fixed frames 2 can be moved stably and accurately to the designated position, which is highly practical.

[0070] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A printing device's unwinder-winder mechanism comprising a base (1), characterized in that, Also includes: Two load-bearing components, each load-bearing component including a fixed frame (2), a support component and an adjusting component, wherein the fixed frame (2) is movably mounted on the base (1) in the X direction, the support component is rotatably mounted on the fixed frame (2) and is radially contractible and expandable for connecting the drum, and the adjusting component is mounted on the support component for controlling the radial contraction and expansion of the support component; A transmission assembly, which is mounted on a base (1) for controlling the movement of two fixed frames (2); A control component, which is mounted on a fixed frame (2), is used to control the rotation of the corresponding connected support components; The supporting component includes a fixed base (3), a telescopic rod (4) and four movable plates (5). The fixed base (3) is rotatably mounted on the fixed frame (2), the telescopic rod (4) is mounted on the fixed base (3), and the four movable plates (5) can be radially moved and set on the adjusting component and connected to the telescopic rod (4).

2. A printing device unwinding and winding mechanism according to claim 1, characterized in that, The four active plates (5) are arranged in a ring array.

3. A printing apparatus according to claim 2, wherein The adjusting component includes: The first bidirectional screw (6) is rotatably mounted on the fixed base (3) and is set along the Z direction, and is used to control the two oppositely set movable plates (5) to move closer and further away from each other along the Z direction; The second bidirectional screw (7) is rotatably mounted on the fixed base (3) and is set along the Y direction. It is used to control the other two oppositely set movable plates (5) to move closer and further away from each other along the Y direction.

4. The printing device unwinding and winding mechanism according to claim 1, characterized in that, The adjustment component further includes: Two locking elements (8) are mounted on the fixed base (3) and are used to restrict the rotation of the first bidirectional screw (6) and the second bidirectional screw (7), respectively.

5. A printing apparatus according to claim 4, wherein Both of the locking components (8) are locking screws.

6. The unwinding and rewinding mechanism of a printing apparatus according to claim 1, characterized in that, Also includes: A lifting assembly is mounted on a base (1) in a Z-direction manner for carrying a drum.

7. The unwinding and rewinding mechanism of a printing apparatus according to claim 6, characterized in that, The lifting component includes: Support base (9), which is movably mounted on base (1) along the Z direction; A lifting cylinder (10) is mounted on a base (1) to drive the support base (9) to move; The support base (9) is provided with a storage slot (11) for placing the roll.

8. The unwinding and rewinding mechanism of a printing apparatus according to claim 1, characterized in that, The transmission assembly includes: The third bidirectional screw (12) is rotatably mounted on the base (1); Guide rod (13), which is rotatably mounted on base (1) and passes through two fixing frames (2); A drive motor (14) is mounted on a base (1) for controlling the rotation of a third bidirectional screw (12); The two fixing brackets (2) are respectively threadedly connected to the two threaded sections of the third bidirectional screw (12).

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