Automatic clamping device of liquid container

Abstract

The utility model provides an automatic clamping device of a liquid container. The automatic clamping device solves the problem that an existing liquid container is directly placed in an instrument and is prone to damage. The device comprises a bottom plate and a cover plate parallel to the bottom plate, a guide shaft parallel to the cover plate is arranged between the bottom plate and the cover plate, two oppositely-arranged sliding blocks are arranged on the guide shaft in a sliding fit mode, and a clamping structure used for enabling the two sliding blocks to draw close inwards is arranged between the bottom plate and the cover plate. A loosening structure used for enabling the two sliding blocks to be far away from each other when the two sliding blocks need to be loosened is arranged between the two sliding blocks, receding holes are formed in the cover plate, the sliding blocks are provided with clamping parts extending out of the receding holes, and the two clamping parts located on the different sliding blocks are oppositely arranged. Through the linear reciprocating motion of the loosening structure, the clamping and loosening of the liquid container are realized, the replacement of the liquid container is more convenient, and the replacement can be realized without redundant actions; and the clamped liquid container made of the glass material is not easy to damage.

Description

Technical Field

[0001] This utility model belongs to the field of liquid injection technology, and relates to an automatic clamping device for a liquid container, particularly an automatic clamping device for a liquid container used in an endoscope liquid injection mechanism. Background Technology

[0002] As endoscopic examinations become increasingly automated and intelligent, the use of fluids (such as staining solutions) is becoming more frequent to better assist medical staff in observing and confirming lesions. To reduce the burden on medical staff, the automation requirements for automated fluid injection instruments will gradually increase. Therefore, the applicant has invented an endoscopic fluid injection mechanism, including a base plate, a liquid container mounted on the base plate, and a push rod coaxially arranged with the liquid container. One end of the push rod is equipped with an injection head. A screw motor is mounted on the base plate to drive the axial movement of the push rod. When the screw motor operates, it drives the screw to rotate, and the nut threaded onto the screw moves axially, thereby driving the push rod to move axially.

[0003] In order to quickly clamp liquid containers, a device that can automatically clamp and release liquid containers needs to be designed to efficiently meet the needs of medical staff to pick up, place and replace liquid containers on fully automated instruments. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an automatic clamping device for liquid containers that facilitates easy replacement of liquid containers.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] An automatic clamping device for a liquid container includes a base plate and a cover plate parallel to the base plate. A guide shaft parallel to the cover plate is provided between the base plate and the cover plate. Two opposing sliders are slidably fitted on the guide shaft. A clamping structure is provided between the base plate and the cover plate to bring the two sliders together inward. A releasing structure is provided between the two sliders to move them apart when they need to be released. A clearance hole is provided on the cover plate. Each slider has a clamping part extending from the clearance hole. Two clamping parts located on different sliders are arranged opposite each other.

[0007] When clamping is required, the release structure moves the two sliders away from each other. When the distance between the two clamping parts is greater than the outer diameter of the liquid container, the liquid container is placed between the two clamping parts. Then, the release structure is disengaged. Under the action of the clamping structure, the two sliders move inward, and at the same time, the two clamping parts move inward, finally clamping the liquid container through the two clamping parts.

[0008] In the above-mentioned automatic clamping device for liquid containers, the clamping structure includes a support block and a compression spring disposed between the base plate and the cover plate. The support block is located on the side of the slider that is opposite to the slider. The two ends of the compression spring act on the slider and the support block respectively. The elastic force of the compression spring acting on the slider extends along the length direction of the guide shaft.

[0009] In the aforementioned automatic clamping device for liquid containers, the slider has a recessed hole coaxial with the guide shaft at one end near the support block. The compression spring is sleeved on the guide shaft, with one end of the spring near the slider extending into the recessed hole. The length of the compression spring in its free state is greater than the depth of the recessed hole. When the slider is compressed by the release structure, the compressed spring can retract completely into the recessed hole.

[0010] In the aforementioned automatic clamping device for liquid containers, the release structure includes a squeezing block disposed between two opposing sliders. Each slider has a first inclined surface on its side near the squeezing block, and the squeezing block has a second inclined surface corresponding to the first inclined surface. When the second inclined surface squeezes the first inclined surface, the two sliders move outwards. When release is required, an external force causes the squeezing block to move, and the second inclined surface squeezes the first inclined surface, increasing the distance between the two opposing sliders, thereby releasing the liquid container.

[0011] In the aforementioned automatic clamping device for liquid containers, there are two parallel guide shafts that jointly guide the slider, with the compression block located between the two guide shafts. The slider is coaxially slidably mounted on the two guide shafts, which improves the stability of the slider.

[0012] In the above-mentioned automatic clamping device for liquid containers, the base plate has a through hole opposite to the extrusion block, and a push rod driven by a power component passes through the through hole. The push rod is connected to the extrusion block. When the push rod retracts, two oppositely arranged sliders abut against the extrusion block and the clamping part is in a loose state.

[0013] When the push rod retracts, it moves the extrusion block between the two opposing sliders, increasing the distance between them and releasing the clamping device. When the push rod extends forward, it moves the extrusion block towards the cover plate. As the extrusion block disengages from the sliders, the two sliders move inward under the action of the compression spring, and the two opposing clamping parts clamp the liquid container. The power component can be a linear drive such as an electric cylinder or a screw motor.

[0014] In the above-mentioned automatic clamping device for liquid containers, a limiting plate is provided in the clearance hole to limit the maximum position of the clamping part moving inward. The limiting plate is fixed to the cover plate, and the middle part of the limiting plate has a guide hole for the extrusion block to pass through.

[0015] The limiting plate is circular and limits the maximum inward movement of the two clamping parts. When the two clamping parts abut against the limiting plate, the maximum distance between the two first inclined surfaces is greater than the minimum distance between the two second inclined surfaces, which can ensure that when the extrusion block retracts, the two sliders can be separated outward through the second inclined surfaces.

[0016] In the aforementioned automatic clamping device for liquid containers, the inner side of the clamping part has a mating surface that adapts to the outer surface of the liquid container. This increases the contact area and improves clamping stability.

[0017] Compared with existing technologies, the automatic clamping device for this liquid container has the following advantages:

[0018] The liquid container is clamped and released by the linear reciprocating motion of the push rod driven by the power component, making the replacement of the liquid container more convenient and eliminating the need for extra actions; the liquid container made of glass material being clamped is not easily damaged. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the automatic clamping device provided by this utility model.

[0020] Figure 2 This is a top view of the automatic clamping device provided by this utility model.

[0021] Figure 3 This utility model provides Figure 2 Sectional view at point AA.

[0022] Figure 4 This is a schematic diagram of the endoscope fluid injection mechanism.

[0023] In the figure, 1 is the base plate; 2 is the cover plate; 3 is the guide shaft; 4 is the slider; 5 is the clearance hole; 6 is the clamping part; 7 is the support block; 8 is the extrusion block; 9 is the first inclined surface; 10 is the second inclined surface; 11 is the through hole; 12 is the push rod; 13 is the power component; 14 is the limiting plate; and 15 is the mating surface. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] The automatic clamping device for the liquid container provided in this embodiment is set as follows: Figure 4The endoscopic fluid injection mechanism shown includes a base plate, a liquid container (such as a container for holding staining solution) disposed on the base plate, and a push rod 12 coaxially disposed with the liquid container. One end of the push rod 12 is provided with an injection head. The base plate is provided with a power component 13 for driving the push rod 12 to move axially. In this embodiment, the power component 13 is a screw motor. When the screw motor is working, it drives the screw to rotate. A nut is threadedly connected to the screw. When the screw rotates, the nut moves axially, thereby driving the push rod 12 to move axially. To prevent the nut from rotating, a guide rail is provided on the base plate, and a slide block is slidably fitted on the guide rail. The nut is fixedly connected to the slide block.

[0026] The automatic clamping device of this liquid container is mounted on the base plate and located at the end of the screw furthest from the screw motor, such as... Figure 1-3 As shown, it includes a base plate 1 and a cover plate 2 arranged parallel to the base plate 1. A guide shaft 3 parallel to the cover plate 2 is provided between the base plate 1 and the cover plate 2. Two opposing sliders 4 are slidably fitted on the guide shaft 3. The cover plate 2 is provided with a clearance hole 5. The slider 4 has a clamping part 6 extending from the clearance hole 5. The two clamping parts 6 located on different sliders 4 are arranged opposite to each other. The inner side of the clamping part 6 (the side closer to the liquid container) has a mating surface 15 adapted to the outer surface of the liquid container.

[0027] In this embodiment, in order to improve the stability of the slider 4, two guide shafts 3 are set and are parallel to each other. The two guide shafts 3 together support and guide the slider 4.

[0028] In order to achieve automatic clamping and releasing of the clamping part 6, a clamping structure is provided between the base plate 1 and the cover plate 2 to bring the two sliders 4 inward, and a releasing structure is provided between the two sliders 4 to move the two sliders 4 away from each other when they need to be released.

[0029] When clamping is required, the release structure moves the two sliders 4 outwards. When the distance between the two clamping parts 6 is greater than the outer diameter of the liquid container, the liquid container is placed between the two clamping parts 6. Then, the release structure is disengaged. Under the action of the clamping structure, the two sliders 4 move inwards, and at the same time, the two clamping parts 6 move inwards, finally clamping the liquid container through the two clamping parts 6.

[0030] like Figure 3 As shown, the release structure includes a squeezing block 8 disposed between two opposing sliders 4. In this embodiment, the squeezing block 8 is a push head disposed on the push rod 12. A first inclined surface 9 is provided on the side of the slider 4 near the squeezing block 8. A second inclined surface 10 is provided on the squeezing block 8 corresponding to the first inclined surface 9. When the second inclined surface 10 squeezes the first inclined surface 9, the two sliders 4 move away from each other.

[0031] like Figure 3The base plate 1 has a through hole 11 opposite to the extrusion block 8. The push rod 12 passes through and connects to the extrusion block 8. When the push rod 12 retracts, the two oppositely arranged sliders 4 abut against the extrusion block 8 and the clamping part 6 is in a loose state.

[0032] When push rod 12 retracts, it moves the extrusion block 8 between the two opposing sliders 4, increasing the distance between them and releasing the clamping device. When push rod 12 extends forward, it moves the extrusion block 8 towards the cover plate 2. When the extrusion block 8 disengages from the sliders 4, the two sliders 4 move inward under the action of the compression spring, and the two opposing clamping parts 6 clamp the liquid container. The power component 13 can be a linear drive component such as an electric cylinder or a screw motor.

[0033] like Figure 1 and Figure 2 As shown, the clearance hole 5 is provided with a limiting plate 14 for limiting the maximum position of the clamping part 6 moving inward. The limiting plate 14 is fixed to the cover plate 2, and the middle part of the limiting plate 14 has a guide hole for the extrusion block 8 to pass through.

[0034] The limiting plate 14 is circular and fixed on the cover plate 2. It limits the maximum position of the two clamping parts 6 moving inward. When the two clamping parts 6 abut against the limiting plate 14, the maximum distance between the two first inclined surfaces 9 is greater than the minimum distance between the two second inclined surfaces 10. This ensures that when the extrusion block 8 retracts, the two sliders 4 can be separated outward through the second inclined surfaces 10.

[0035] In this embodiment, the clamping structure includes a support block 7 and a compression spring (not shown in the figure) disposed between the base plate 1 and the cover plate 2. The support block 7 is located on the side of the slider 4 away from the slider 4 that is disposed opposite to it. That is, the two support blocks 7 surround the two opposite sliders 4 between them. The two ends of the compression spring act on the slider 4 and the support block 7 respectively. The elastic force of the compression spring acting on the slider 4 extends along the length direction of the guide shaft 3.

[0036] In this embodiment, the slider 4 has a recessed hole (not shown in the figure) coaxially arranged with the guide shaft 3 at one end near the support block 7. A compression spring is sleeved on the guide shaft 3, with the end of the compression spring near the slider 4 extending into the recessed hole. The length of the compression spring in its free state is greater than the depth of the recessed hole. When the slider 4 is squeezed by the injection head, the compressed compression spring can retract completely into the recessed hole, at which point the slider 4 completely abuts against the support block 7. That is, each slider 4 corresponds to two compression springs, and the two compression springs are sleeved on different guide shafts 3.

[0037] Two sliders and one injection head constitute a structure for clamping a liquid container, such as... Figure 1-4 As shown, three sets of such structures are set between the base plate 1 and the cover plate 2. Each set of clamping structures corresponds to a push head, and the sliders 4 in the three sets of clamping structures share two guide shafts 3.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An automatic clamping device for a liquid container, characterized in that, The device includes a base plate (1) and a cover plate (2) arranged parallel to the base plate (1). A guide shaft (3) parallel to the cover plate (2) is provided between the base plate (1) and the cover plate (2). Two opposing sliders (4) are slidably fitted on the guide shaft (3). A clamping structure for bringing the two sliders (4) together is provided between the base plate (1) and the cover plate (2). A releasing structure for moving the two sliders (4) apart when they need to be released is provided between the two sliders (4). A clearance hole (5) is provided on the cover plate (2). A clamping part (6) extending from the clearance hole (5) is provided on the slider (4). Two clamping parts (6) located on different sliders (4) are arranged opposite to each other.

2. The automatic clamping device for a liquid container according to claim 1, characterized in that, The clamping structure includes a support block (7) and a compression spring disposed between the base plate (1) and the cover plate (2). The support block (7) is located on the side of the slider (4) away from the slider (4) which is opposite to it. The two ends of the compression spring act on the slider (4) and the support block (7) respectively. The elastic force of the compression spring acting on the slider (4) extends along the length direction of the guide shaft (3).

3. The automatic clamping device for a liquid container according to claim 2, characterized in that, The slider (4) has a recessed hole coaxial with the guide shaft (3) at one end near the support block (7), and the compression spring is sleeved on the guide shaft (3) with one end of the compression spring near the slider (4) extending into the recessed hole.

4. The automatic clamping device for a liquid container according to claim 1, characterized in that, The release structure includes a squeezing block (8) disposed between two opposing sliders (4). The slider (4) has a first inclined surface (9) on the side near the squeezing block (8). The squeezing block (8) has a second inclined surface (10) disposed corresponding to the first inclined surface (9). When the second inclined surface (10) squeezes the first inclined surface (9), the two sliders (4) move away from each other.

5. The automatic clamping device for a liquid container according to claim 4, characterized in that, There are two guide shafts (3) that are parallel to each other. The two guide shafts (3) together guide the slider (4). The extrusion block (8) is located between the two guide shafts (3).

6. The automatic clamping device for a liquid container according to claim 4, characterized in that, The base plate (1) has a through hole (11) opposite to the extrusion block (8). A push rod (12) driven by a power component (13) passes through the through hole (11). The push rod (12) is connected to the extrusion block (8). When the push rod (12) retracts, two oppositely arranged sliders (4) abut against the extrusion block (8) and the clamping part (6) is in a released state.

7. The automatic clamping device for a liquid container according to claim 4, characterized in that, The clearance hole (5) is provided with a limiting plate (14) for limiting the maximum position of the clamping part (6) moving inward. The limiting plate (14) is fixed to the cover plate (2). The middle part of the limiting plate (14) has a guide hole for the extrusion block (8) to pass through.

8. The automatic clamping device for a liquid container according to claim 1, characterized in that, The clamping part (6) has a mating surface (15) on its inner side that is adapted to the outer surface of the liquid container.

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