A quick clamping device and system for a printhead

Abstract

The utility model discloses a kind of quick clamping device and system of print head, quick clamping device includes first clamping block and second clamping block, the first clamping block can be moved in up-down direction relative to the second clamping block, the first clamping block has first step surface and second step surface, the first step surface is located above the second step surface, the second clamping block is located on first step surface, first elastic member is equipped between the first clamping block and the second clamping block, the quick clamping device has clamping state, when in the clamping state, the print head is located between the second clamping block and the second step surface, the first elastic member is in compression state.The quick clamping device of the utility model can be quickly disassembled and assembled, and print head is not easily damaged.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printing equipment technology, and specifically to a quick clamping device and system for a printhead. Background Technology

[0002] Currently, the printhead of industrial printers is fixed to the gantry by fasteners such as bolts. Using bolts to directly fix the printhead has at least three drawbacks: (1) During the fixing process, the bolts may be misaligned, causing the printhead to tilt and the printed content to be skewed; (2) When replacing the printhead, multiple bolts need to be disassembled and installed, which takes a long time, about 5-10 minutes; (3) The tightening torque of the fasteners is difficult to control precisely, which can easily damage the printhead. Utility Model Content

[0003] To solve at least one of the above-mentioned technical problems, this utility model provides a quick clamping device and system for printheads, which can be quickly assembled and disassembled and the printhead is not easily damaged.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A quick clamping device for a printhead, characterized in that it includes a first clamping block and a second clamping block, the first clamping block being movable relative to the second clamping block in a vertical direction, the first clamping block having a first stepped surface and a second stepped surface, the first stepped surface being located above the second stepped surface, the second clamping block being located on the first stepped surface, a first elastic element being provided between the first clamping block and the second clamping block, the quick clamping device having a clamping state, in which the printhead is located between the second clamping block and the second stepped surface, and the first elastic element is in a compressed state.

[0005] In a preferred embodiment, the quick clamping device further includes a fixed base and an angle adjustment mechanism. The angle adjustment mechanism includes a driving member, a rotating disk, and a second elastic member. The rotating disk is located between the fixed base and the second clamping block, and the rotating disk and the second clamping block are fixedly connected. The rotating disk drives the first clamping block, the second clamping block, and the print head to move.

[0006] In a preferred embodiment, one end of the drive member is threadedly connected to the fixed seat, and the other end abuts against the rotating disk; the second elastic member is located between the fixed seat and the rotating disk.

[0007] In a preferred embodiment, the fixed base is provided with a rotating shaft, and the rotating disk rotates around the rotating shaft.

[0008] In a preferred embodiment, the first clamping block is provided with a waist-shaped hole, and the second clamping block is provided with a limiting member, which is inserted into the waist-shaped hole.

[0009] In a preferred embodiment, the second clamping block has an upwardly extending guide, and the first elastic member is sleeved on the guide.

[0010] In a preferred embodiment, the first clamping block is provided with a guide through hole, and the second clamping block is provided with a guide post, the guide post being inserted into the guide through hole.

[0011] In a preferred embodiment, the print head has positioning holes on both sides, and the second clamping block has positioning pins that are inserted into the positioning holes.

[0012] In a preferred embodiment, the first clamping block and the second clamping block are provided with threaded holes that penetrate each other.

[0013] This utility model also provides the following technical solution: A quick clamping system for a printhead includes a gantry and a printhead. The quick clamping system includes the aforementioned quick clamping device, in which the printhead is located, and the quick clamping device is fixed to the gantry.

[0014] The present invention adopts the above solution and has the following advantages compared with the prior art: The quick clamping device of this utility model first moves the first clamping block down, increasing the gap between the second step surface of the first clamping block and the second clamping block. At this point, the print head can be installed between the second clamping block and the second step surface, making the print head installation convenient and quick. Then, the first clamping block moves up, compressing the first elastic element and applying a downward pressure to the print head. At the same time, the second step surface provides an upward supporting force to the print head. Since the elastic force of the first elastic element is controllable, the pressure applied to the print head is controllable, and the print head is not easily damaged. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the quick clamping device according to an embodiment of the present utility model; Figure 2 This is another perspective view of the quick clamping device according to an embodiment of the present utility model; Figure 3 This is another perspective view of the quick clamping device according to an embodiment of the present utility model; Figure 4 This is a cross-sectional view of the quick clamping device according to an embodiment of the present utility model; Figure 5 This is another cross-sectional view of the quick clamping device according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the fixed base and rotating disk according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of a printhead according to an embodiment of the present invention.

[0017] in, 100. Print head; 101. Positioning hole; 1. First clamping block; 11. Guide through hole; 12. Waist-shaped hole; 13. First stepped surface; 14. Second stepped surface; 2. Second clamping block; 21. Guide post; 22. Limiting element; 23. Guide element; 3. First elastic element; 4. Threaded hole; 5. Fixed seat; 51. Rotating shaft; 52. Bearing; 53. Mounting hole; 6. Angle adjustment mechanism; 61. Driving element; 62. Rotating disk; 63. Second elastic element. Detailed Implementation

[0018] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0019] This embodiment provides a quick clamping system for a printhead, including a gantry and a printhead 100, specifically a printhead from an industrial inkjet printer. The printhead 100 is detachably mounted in a quick clamping device, which is fixed to the gantry.

[0020] Furthermore, referring to Figures 1 to 7 As shown, the quick clamping device includes a first clamping block 1, a second clamping block 2, a first elastic element 3, a fixed base 5, and an angle adjustment mechanism 6.

[0021] The first clamping block 1 can move vertically relative to the second clamping block 2. Figure 4As shown, the first clamping block 1 has a guide hole 11, and the second clamping block 2 has a guide post 21. The guide post 21 is inserted into the guide hole 11 and remains stationary, while the guide hole 11 moves vertically relative to the guide post 21. The guide hole 11 and guide post 21 improve the smoothness of installation and ensure that the first clamping block 1 only moves vertically and not horizontally. The "vertical" and "horizontal" directions can be referred to as... Figure 4 The paper orientation is shown.

[0022] The printhead 100 has positioning holes 101 on both sides, and the second clamping block 2 has positioning pins. The positioning pins are tapered in shape, and the positioning holes 101 are tapered holes. When the printhead 100 is installed in the quick clamping device, the positioning pins are inserted into the positioning holes 101. In other embodiments, tapered positioning pins can also be provided on the printhead 100, and positioning holes can be provided on the second clamping block 2. When installing the printhead, the positioning holes and positioning pins are aligned, and the positioning pins are inserted into the positioning holes. When disassembling the printhead, the positioning holes and positioning pins are disengaged, and the printhead 100 can be directly moved out from between the first clamping block 1 and the second clamping block 2.

[0023] A first elastic element 3 is provided between the first clamping block 1 and the second clamping block 2. Specifically, the second clamping block 2 has an upwardly extending guide 23, and the first elastic element 3 is sleeved on the guide 23. This quick-clamping device has a clamping state. In the clamping state, the print head 100 is located between the first clamping block 1 and the second clamping block 2. The positioning pin of the second clamping block 2 is inserted into the positioning hole 101 of the print head 100, and the first elastic element 3 is in a compressed state. At this time, the first elastic element 3 applies a downward pressure to the second clamping block 2, and then the second clamping block 2 applies a downward force to the print head 100. The first elastic element 3 is specifically a compression spring. The spring force of the compression spring can be precisely controlled, effectively preventing damage to the print head 100.

[0024] Reference Figure 2 As shown, the first clamping block 1 and the second clamping block 2 are provided with threaded holes 4 that pass through each other. More specifically, an auxiliary screw is inserted into the screw hole 4. The lower end of the auxiliary screw is fixedly connected to the second clamping block 2 by welding or other means. The upper end of the auxiliary screw is threadedly engaged with the first clamping block 1. When the auxiliary screw is turned clockwise, the first clamping block 1 moves downward and the second clamping block 2 remains stationary; when the auxiliary screw is turned counterclockwise, the first clamping block 1 moves upward and the second clamping block 2 remains stationary.

[0025] Furthermore, the first clamping block 1 has a first stepped surface 13 and a second stepped surface 14, with the second stepped surface 14 located below the first stepped surface 13 and the second clamping block 2 located on the first stepped surface 13. In the clamping state, both ends of the print head 100 are located on the second stepped surface 14. When the auxiliary screw is turned clockwise, the distance between the second stepped surface 14 and the lower surface of the second clamping block 2 increases, making it easier to place the print head 100 between the second stepped surface 14 and the second clamping block 2 or to remove the print head 100 from between the second stepped surface 14 and the second clamping block 2; when the auxiliary screw is turned counterclockwise, the distance between the second stepped surface 14 and the lower surface of the second clamping block 2 decreases.

[0026] The angle adjustment mechanism 6 includes a drive member 61, a rotating disk 62, and a second elastic member 63. The rotating disk 62 is located between the fixed base 5 and the second clamping block 2, and the rotating disk 62 and the second clamping block 2 are fixedly connected. When the rotating disk 62 rotates, the second clamping block 2 will rotate accordingly. Since the positioning pin of the second clamping block 2 is inserted into the positioning hole of the print head 100, the print head 100 will also move in the horizontal direction when the second clamping block 2 moves. Since the two sides of the print head 100 abut against the second step surface 14 of the first clamping block 1, the rotating disk 62 drives the first clamping block 1, the second clamping block 2, and the print head 100 to rotate.

[0027] Furthermore, the mounting base 5 is provided with two mounting holes 53, which are directly fixed to the gantry frame by fasteners. That is, in this embodiment, the print head 100 does not need to be directly fixed to the gantry frame, thus avoiding damage to the print head 100 due to large torque. (Refer to...) Figure 6 As shown, a rotating shaft 51 is provided on the fixed base 5, and a bearing 52 is provided between the rotating disk 62 and the rotating shaft 51. The rotating disk 62 rotates around the rotating shaft 51.

[0028] Reference Figure 6 As shown, the driving component 61 is specifically a fine-tuning screw. One end of the driving component 61 is threadedly connected to the fixed base 5, and the other end abuts against the rotating disk 62. The second elastic component 63 is located between the fixed base 5 and the rotating disk 62. More specifically, the second elastic component 63 is a tension spring. The tension spring has two hooks at both ends. One hook is connected to the fixed base 5, and the other hook is connected to the rotating disk 62. When it is necessary to adjust the position of the print head 100, first turn the fine-tuning screw. The fine-tuning screw abuts against the rotating disk 62 and pushes the rotating disk 62 forward or backward. At this time, the fine-tuning screw applies a force in the first direction to the rotating disk 62. Then, rotate the rotating disk 62, and the tension spring is stretched. At this time, the tension spring applies a force in the second direction to the rotating disk 62. The force in the first direction and the force in the second direction cancel each other out, ensuring that the rotating disk 62 will not easily shake after the direction is adjusted.

[0029] The first clamping block 1 has an oblong hole 12, and the second clamping block 2 has a limiting member 22, which is inserted into the oblong hole 12. The limiting member 22 and the oblong hole 12 are provided to prevent the first clamping block 1 from moving downwards under gravity after the first elastic member 3 fails. This would prevent the bottom of the first clamping block 1 from being lower than the bottom surface of the print head 100, which could easily cause collisions between the first clamping block 1 and mechanisms below the print head 100, such as the conveying mechanism. With the cooperation of the limiting member 22 and the oblong hole 12, the upper clamping block 1 can only move downwards by a small stroke, ensuring that the bottom surface of the print head 100 is always at the lowest point of the entire quick clamping system.

[0030] During installation of the printhead in this embodiment, the auxiliary screw is first tightened clockwise with an Allen wrench until it can no longer be tightened. During the tightening process, the first clamping block 1 moves downward, and the distance between the second step surface 14 and the bottom of the second clamping block 2 increases. The positioning hole 101 of the printhead 100 and the positioning pin of the second clamping block 2 cooperate to position the printhead 100 between the first clamping block 1 and the second clamping block 2. Then, the auxiliary screw is tightened counterclockwise, and the first elastic element 3 is compressed and applies a downward force. At the same time, the second step surface 14 of the first clamping element 1 applies an upward supporting force to the printhead 100. The elastic force of the first elastic element 3 is controllable, that is, the printhead 100 is subjected to a controllable force, which can avoid excessive clamping force and damage to the printhead. After the print head 100 is installed on the first clamping block 1 and the second clamping block 2, use tools such as a laser rangefinder to measure whether the print head 100 is in the correct position. If the position needs to be adjusted, tighten the fine adjustment screw so that the angle of the print head 100 in the horizontal direction is the same as the angle required by the design.

[0031] When disassembling the printhead 100 in this embodiment, the auxiliary screw is turned clockwise with an Allen wrench, and the first clamping block 1 moves downward until the auxiliary screw can no longer be turned. The distance between the bottom of the second step surface 14 and the second clamping block 2 increases, and the printhead can be removed by hand. The operation is relatively convenient and saves time.

[0032] Compared with the prior art of fixing the print head to the gantry with screws, the quick clamping device of this embodiment has greatly improved the assembly and disassembly efficiency, and can complete the assembly and disassembly within 30 seconds; adjusting the position of the print head is also more convenient and quick, and the positioning accuracy is controlled within ±0.05mm.

[0033] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0034] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0035] The above embodiments are only for illustrating the technical concept and features of this utility model, and are preferred embodiments. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly, and should not be construed as limiting the protection scope of this utility model. All equivalent transformations or modifications made based on the principles of this utility model should be covered within the protection scope of this utility model.

Claims

1. A quick-clamping device for a printhead, characterized in that, The device includes a first clamping block and a second clamping block. The first clamping block is movable vertically relative to the second clamping block. The first clamping block has a first stepped surface and a second stepped surface, with the first stepped surface located above the second stepped surface and the second clamping block located on the first stepped surface. A first elastic element is provided between the first and second clamping blocks. The second clamping block has an upwardly extending guide element, with the first elastic element sleeved on the guide element. The first clamping block has a guide through hole, and the second clamping block has a guide post inserted into the guide through hole. The first clamping block has a waist-shaped hole, and the second clamping block has a limiting element inserted into the waist-shaped hole. The first and second clamping blocks have interpenetrating threaded holes, with an auxiliary screw inserted into each threaded hole. The lower end of the auxiliary screw is fixedly connected to the second clamping block, and the upper end is threadedly engaged with the first clamping block. The quick clamping device has a clamping state, in which the print head is located between the second clamping block and the second stepped surface, and the first elastic element is in a compressed state.

2. The quick clamping device according to claim 1, characterized in that, The quick clamping device also includes a fixed base and an angle adjustment mechanism. The angle adjustment mechanism includes a driving component, a rotating disk, and a second elastic component. The rotating disk is located between the fixed base and the second clamping block, and the rotating disk and the second clamping block are fixedly connected. The rotating disk drives the first clamping block, the second clamping block, and the print head to move.

3. The quick clamping device according to claim 2, characterized in that, One end of the driving member is threadedly connected to the fixed base, and the other end abuts against the rotating disk; the second elastic member is located between the fixed base and the rotating disk.

4. The quick clamping device according to claim 2, characterized in that, The fixed base is provided with a rotating shaft, and the rotating disk rotates around the rotating shaft.

5. The quick clamping device according to claim 1, characterized in that, The print head has positioning holes on both sides, and the second clamping block has positioning pins that are inserted into the positioning holes.

6. The quick clamping device according to claim 1, characterized in that, The first clamping block and the second clamping block are provided with threaded holes that penetrate each other.

7. A quick clamping system for a printhead, comprising a gantry and a printhead, the quick clamping system further comprising a quick clamping device as described in any one of claims 1-6, wherein the printhead is located in the quick clamping device, and the quick clamping device is fixed to the gantry.

Images