An automatic packaging machine for drug applicator tips

Abstract

The application discloses a kind of automatic packaging machines of administration finger sleeve, it is related to medical instrument relevant technical field, including bag breaking mechanism, finger sleeve clamping mechanism and fingertip compression mechanism, finger sleeve is composed of fingertip and finger pulp, the finger sleeve clamping mechanism includes several groups of clamping jaw and driving part, each group of clamping jaw is two, and each clamping jaw is equipped with clamping roller;In the bag breaking mechanism from the material film on the pressure away from the finger sleeve stroke, several groups of clamping jaw are based on the driving of driving part and first clamping finger pulp, and each clamping roller is based on the driving of driving part and clamps fingertip again;After finger sleeve enters packaging, several groups of clamping roller are based on the driving of driving part and first remove the clamping of fingertip, fingertip compression mechanism compresses fingertip, and several groups of clamping jaw are based on the driving of driving part and remove the clamping of finger pulp again.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an automatic packaging machine for drug delivery finger cots. Background Technology

[0002] As is generally known, a drug delivery finger cot is a medical device used to administer medication. It is finger-shaped and can be worn on the finger. It is usually made of medical latex (made of polyethylene film). It is a convenient and hygienic aid that helps medical staff or caregivers to accurately deliver medication to patients while reducing the risk of cross-infection.

[0003] During the production of finger sleeves, they need to be packaged to prevent them from being contaminated before use. The machinery used for packaging finger sleeves is a finger sleeve packaging machine. The finger sleeve packaging machine is an automated equipment that automatically picks up, bags, and cuts the finger sleeves, which are loaded and unloaded manually. The machine picks up a fixed number of finger sleeves with a fixed spacing of 50mm.

[0004] The working principle of the finger sleeve packaging machine is as follows: Single (or stacked) finger sleeve film pieces are manually placed onto the fixture. Correct placement of the film on the fixture is crucial; otherwise, subsequent bag cutting will fail, leading to packaging failure. The material is conveyed to the feeding station by a conveyor line, where a positioning mechanism positions the fixture. Mechanical grippers then clamp the finger sleeves, and a bag-breaking mechanism presses them off the film. After the grippers flip, the finger sleeves are fed into the packaging bag. During the feeding process, the mechanical... The structure automatically opens the bag opening; a fingertip pressing mechanism presses down the exposed fingertips of the grippers to prevent the finger sleeves from shifting when the grippers retract; after the fingertips are pressed down, the grippers retract, and the bag opening automatically closes; after the grippers retract, a flow bar presses down to hold the bag in place, reducing displacement of the finger sleeves relative to the bag during transport; after the flow bar presses down, the fingertip pressing is released; the bag will be fed backward for cutting, with a cutting-feeding rhythm; a counter is installed at the tail of the bag cutter.

[0005] The shortcoming of the existing technology is that during the finger cot packaging process, when the gripper clamps and presses the finger cot apart, a portion is reserved at the end of the finger cot for the fingertip pressing mechanism to hold it in place, in order to prevent the finger cot from being taken out of the packaging bag when the gripper withdraws. However, since the finger cot is relatively light and thin, the reserved portion of the finger cot is prone to bending during the process of being flipped by the gripper. This would cause the fingertip pressing mechanism to fail to hold the finger cot in place, resulting in problems with the finger cot packaging. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic packaging machine for drug delivery finger cots, thereby solving the technical problems in related technologies.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An automatic packaging machine for drug delivery finger cots includes a bag-breaking mechanism, a finger cot gripping mechanism, and a fingertip pressing mechanism. The finger cot consists of a fingertip and a finger pad. The finger cot gripping mechanism includes several sets of grippers and a driving component. Each set of grippers has two grippers, and each gripper is equipped with a gripping roller. During the stroke of the bag-breaking mechanism pressing the finger cot off the film, the several sets of grippers first grip the finger pad based on the driving component, and each set of gripping rollers then grips the fingertip based on the driving component. After the finger cot enters the packaging, the several sets of gripping rollers first release the gripping of the fingertip based on the driving component, the fingertip pressing mechanism presses the fingertip, and the several sets of grippers then release the gripping of the finger pad based on the driving component.

[0009] As described above, the driving component includes a first slide rail and two sliders slidably disposed within the first slide rail. Each gripper is fixedly connected to a second slide rail, and each slider is slidably connected to a second slide rail. A transmission component is provided on the second slide rail, which transmits the power of the slider to the corresponding clamping roller. A limiting component is also provided on the second slide rail. During the process of several sets of grippers clamping the fingertip based on the power of the slider, the limiting component restricts the transmission component from transmitting power to the corresponding clamping roller. After several sets of grippers each clamp the fingertip of a finger sleeve, the limiting component removes the transmission restriction on the transmission component.

[0010] The aforementioned transmission component includes an air chamber mounted on the second slide rail and a piston mounted on the gripper. The air chamber and the piston at the corresponding position are connected by an air guide pipe. The piston rod of the piston is connected to the gripper roller via a rocker arm, and a first elastic element is provided between the rocker arm and the piston rod. Under the elastic force of the first elastic element, the length direction of the rocker arm is always parallel to the movement direction of the gripper. When the air chamber is squeezed by the slider at the corresponding position, the piston drives the gripper roller to move to grip the fingertip of the finger sleeve.

[0011] The aforementioned limiting member includes a oscillating block disposed on each of the second slide rails and a drive mechanism for driving the oscillating block.

[0012] The aforementioned driving mechanism includes a first extrusion groove and a second extrusion groove arranged on each stop block, and a rod arranged on each second slide rail by means of sliding friction. Each rod is provided with a first extrusion rod that cooperates with the first extrusion groove and a second extrusion rod that cooperates with the second extrusion groove. When the two jaws in each group move away from each other, the two rods pull each other, the first extrusion groove engages with the corresponding first extrusion rod, and the second extrusion groove disengages from the corresponding second extrusion rod. When the two jaws in each group move closer to each other, the two rods squeeze each other, the first extrusion groove disengages from the corresponding first extrusion rod, and the second extrusion groove engages with the corresponding second extrusion rod. When it is necessary to prevent the slider from extruding the air chamber, the first extrusion groove engages with the corresponding first extrusion rod. When it is necessary to prevent the slider from stretching the air chamber, the second extrusion groove engages with the corresponding second extrusion rod.

[0013] As described above, both the first extrusion groove and the second extrusion groove are divided into a sliding section and a limiting section.

[0014] As described above, the blocking block is located on the second slide rail at the end away from the gripper. The movement of the slider within the second slide rail is divided into two strokes: In the first stroke, when the blocking block obstructs the movement of the slider, the two sliders move closer to each other within the same first slide rail, causing the two second slide rails to move closer to each other, and the two grippers of each group clamp the fingertip; In the second stroke, the blocking block removes its obstructive effect on the slider, and the slider continues to compress the air chamber, and the piston drives the clamping roller to clamp the fingertip.

[0015] As described above, the blocking block is located in the middle of the second slide rail. The movement of the slider within the second slide rail is divided into three strokes: In the first stroke, the slider moves within the second slide rail to compress the air chamber, and the piston drives the clamping roller to move to the end of the corresponding gripper; In the second stroke, the blocking block hinders the movement of the slider, and the two sliders continue to move closer to each other within the same first slide rail, causing the two second slide rails to move closer to each other, and the two grippers of each group clamp the fingertip; In the third stroke, the blocking block removes its obstruction to the slider, the slider continues to compress the air chamber, and the piston drives the clamping roller to clamp the fingertip.

[0016] As described above, the piston rod is connected to the center of the swing rod, and the swing rod is also provided with an auxiliary roller. The auxiliary roller and the clamping roller are respectively placed at both ends of the swing rod along its length direction. When the length direction of the swing rod is parallel to the moving direction of the clamping jaws, the farthest distance between the auxiliary roller and the clamping roller is greater than the thickness of the corresponding clamping jaws.

[0017] As described above, each of the rods is provided with a first protrusion and a second protrusion; during the first stroke, when the slider squeezes the air chamber, the two first protrusions on the two rods jointly prevent the relative movement of the two rods, and the distance between the two grippers in each group remains unchanged; when the fingertip pressing mechanism is required to press the fingertip, the two grippers in each group clamp the fingertip, the slider stretches the air chamber, and the two second protrusions on the two rods jointly prevent the relative movement of the two rods, and the distance between the two grippers in each group remains unchanged.

[0018] The beneficial effects of this invention are as follows: by setting a clamping roller on each gripper, the fingertip can be clamped during the flipping process of each set of grippers, thereby preventing the fingertip from bending and allowing the fingertip to enter the packaging bag smoothly. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an automatic packaging machine for drug delivery finger cots provided in an embodiment of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of a partial structure of an automatic packaging machine for drug delivery finger cots provided in an embodiment of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the finger cot gripping mechanism of an automatic drug delivery finger cot packaging machine provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic cross-sectional view of the finger cot gripping mechanism at the second slide rail end of a module of an automatic packaging machine for drug delivery finger cots provided in an embodiment of the present invention.

[0024] Figure 5 for Figure 4 Enlarged structural diagram at point A in the diagram;

[0025] Figure 6 for Figure 4 Enlarged structural diagram at point B in the diagram;

[0026] Figure 7 A schematic diagram of the cross-sectional structure of the fingertip of an automatic packaging machine for drug delivery finger cots provided in an embodiment of the present invention, in which the gripper clamps the fingertip of the finger cot at the end of the second slide rail.

[0027] Figure 8 for Figure 7 Enlarged structural diagram at point C;

[0028] Figure 9 for Figure 7 Enlarged structural diagram at point D in the diagram;

[0029] Figure 10 A schematic diagram of the cross-sectional structure of the fingertip of an automatic packaging machine for drug delivery finger cots provided in an embodiment of the present invention, wherein the clamping roller clamps the fingertip of the finger cot at the end of the second slide rail.

[0030] Figure 11 This is a schematic cross-sectional view of the finger cot gripping mechanism of an automatic packaging machine for drug administration provided in an embodiment of the present invention when the module is located in the middle of the second slide rail.

[0031] Figure 12 This is a schematic cross-sectional view of a component of an automatic packaging machine for drug delivery finger cots provided in an embodiment of the present invention, where the clamping roller is located at the end of the clamping claw when it is in the middle of the second slide rail.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Bag breaking mechanism; 2. Finger tip pressing mechanism; 3. Conveying fixture; 4. Finger sleeve gripping mechanism; 40. Gripper; 41. Grip roller; 42. First slide rail; 43. Slider; 44. Second slide rail; 45. Air chamber; 46. Piston; 47. Swing rod; 48. Block; 49. First extrusion groove; 50. Second extrusion groove; 51. First extrusion rod; 52. Second extrusion rod; 53. Rod body; 54. Sliding section; 55. Limiting section; 56. First protrusion; 57. Second protrusion; 58. Finger sleeve; 59. Auxiliary roller. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the following will be described in conjunction with the appendix. Figure 1 To be continued Figure 12 The present invention will now be described in further detail.

[0035] This invention provides an automatic packaging machine for drug delivery finger cots, including a bag-breaking mechanism 1, a finger cot gripping mechanism 4, and a fingertip pressing mechanism 2. The finger cot 58 consists of a fingertip and a finger pad. The finger cot gripping mechanism 4 includes several sets of grippers 40 and a driving component. Each set of grippers 40 consists of two grippers, and each gripper 40 is equipped with a gripping roller 41. During the stroke of the bag-breaking mechanism 1 pressing the finger cot 58 off the film, the several sets of grippers 40 first grip the finger pad based on the driving component, and each set of gripping rollers 41 then grips the fingertip based on the driving component. After the finger cot 58 enters the packaging, the several sets of gripping rollers 41 first release the grip on the fingertip based on the driving component, the fingertip pressing mechanism 2 presses the fingertip, and the several sets of grippers 40 then release the grip on the finger pad based on the driving component.

[0036] Specifically, the automatic packaging machine for drug dispensing finger cots includes two processes: the production and forming of finger cots 58 and packaging. In the finger cot production and forming process, a conveying fixture 3 transports the individual finger cot 58 film to the bag-breaking mechanism 1. The film of the finger cot 58 needs to be correctly placed on the fixture plate of the conveying fixture 3. Each finger cot 58 consists of two layers of film; that is, two layers of film are correctly placed on each fixture plate and aligned along the cutting direction. Taking the cutting direction as the vertical reference, the finger cots are clamped from both the top and bottom surfaces. The process is carried out vertically to ensure that the bag-breaking mechanism 1 can properly cut the film. When the film reaches the picking position of the bag-breaking mechanism 1, the positioning mechanism positions the tooling plate, and then the fingertip gripping mechanism holds the film. That is, each set has two grippers 40. One gripper 40 presses the film down from above, and the other gripper 40 presses the film up from below, thus clamping the film. For ease of subsequent description and understanding, we will now describe one set of grippers as an example. During the process of cutting the film, the bag-breaking mechanism 1 will also press the edges of the finger sleeve 58 that is about to be formed. The edges are heat-sealed. The size of the grippers 40 should be smaller than the size of the cutting blade of the bag-breaking mechanism 1 to avoid mutual interference. The fingertips of the finger sleeves 58 should be reserved. Each set of two grippers 40 clamps the finger pads of the finger sleeves 58. After the finger sleeves 58 are cut into shape, the flipping component on the finger sleeve gripping mechanism 4 drives several sets of grippers 40 to flip, so that the finger sleeves 58 correspond to the horizontal direction of the bag opening. After several sets of grippers 40 are flipped 180 degrees, the horizontally arranged transmission mechanism drives several sets of grippers 40 to extend into the opened packaging bag. Inside, the fingertip pressing mechanism 2 then presses the fingertip of the finger sleeve 58. After the fingertip of the finger sleeve 58 is pressed, each set of grippers 40 no longer grips the fingertip and removes the packaging bag under the drive of the transmission mechanism. Then, the flow strip presses down to hold the bag in place, reducing the displacement of the finger sleeve 58 relative to the bag during bag transport. After the flow strip presses down, the fingertip pressing is released. The bag will be cut backward. The cutting rhythm is cut-feed. All the mechanisms in the automatic packaging machine for drug delivery finger sleeves are existing technologies and will not be described in detail here.

[0037] During the flipping process of the finger sleeve 58 by the gripper 40, the reserved portion of the finger sleeve 58 is prone to bending. This can cause the fingertip pressing mechanism 2 to fail to hold the finger sleeve 58, resulting in packaging problems. Therefore, in this embodiment, each set of two grippers 40 is responsible for gripping the finger pad of the finger sleeve 58, and each gripper 40 corresponds to a gripping roller 41. That is, each set of two gripping rollers 41 is responsible for gripping the fingertip. The gripping rollers 41 can rotate to reduce friction with the finger sleeve 58. The way the two gripping rollers 41 grip the fingertip can be the same as the way the two grippers 40 grip the finger pad. In addition, the movement along the length of the finger sleeve 58, that is, the movement of the gripping rollers 41, can be adjusted. A transmission rod slides horizontally along the length of the finger sleeve 58 on the gripper 40. The driving component can be two driving sources. One drives the two grippers 40 to clamp the fingertip, and the other drives the transmission rod to drive the two gripping rollers 41 to roll towards the fingertip, thereby clamping the fingertip of the finger sleeve 58. When the fingertip pressing mechanism 2 needs to press the fingertip of the finger sleeve 58, the other driving source first drives the two gripping rollers 41 to disengage from the fingertip. Then, the fingertip pressing mechanism 2 presses the fingertip of the finger sleeve 58. Subsequently, one driving source drives the two grippers 40 to remove the clamping from the fingertip. The two driving sources drive the two sets of mechanisms to achieve different movements. This is the prior art and will not be described in detail.

[0038] The beneficial effect of this embodiment is that by setting a clamping roller 41 on each clamping claw 40, the fingertip can be clamped during the flipping process of the finger sleeve 58 by each set of clamping claws 40, thereby preventing the fingertip from bending and allowing the finger sleeve 58 to enter the packaging bag smoothly.

[0039] Preferably, the driving component includes a first slide rail 42 and two sliders 43 slidably disposed within the first slide rail 42. Each gripper 40 is fixedly connected to a second slide rail 44, and each slider 43 is slidably connected to a second slide rail 44. A transmission component is provided on the second slide rail 44, and the transmission component transmits the power of the slider 43 to the corresponding clamping roller 41. A limiting component is also provided on the second slide rail 44. During the process of several sets of grippers 40 clamping the fingertip based on the power of the slider 43, the limiting component restricts the transmission component from transmitting power to the corresponding clamping roller. After several sets of grippers 40 clamp the fingertip of a finger sleeve 58, the limiting component removes the transmission restriction on the transmission component.

[0040] Specifically, in the aforementioned embodiments, the gripping of the fingertip by each group of two grippers 40 and the gripping of the fingertip by each group of two gripping rollers 41 are achieved by two drive sources. In this embodiment, the drive source used in the prior art to drive each group of two grippers 40 to grip the fingertip can also be used to drive the two gripping rollers 41 to grip the fingertip. That is, in the prior art, the drive of the two grippers 40 is driven by a pitch mechanism. The pitch mechanism includes a drive source and several first slide rails 42. Two sliders 43 are vertically slidably arranged in each first slide rail 42. The positions of the two sliders 43 are symmetrically arranged. A second slide rail 44 is fixedly connected to each gripper 40. The sliders 43 are slidably connected to the corresponding second slide rail 44, and the sliding direction is also vertical. The second slide rail 44 is provided with a transmission component that transmits power to the gripping rollers 41, and a limiting component that prevents the sliders 43 from moving within the second slide rail 44. During operation, the material film is first processed... The finger sleeve 58 is clamped on the top and bottom surfaces. The drive source drives two sliders 43 located in the same first slide rail 42 to move closer to each other. At this time, the limiting member restricts the movement of sliders 43 in the second slide rail 44. Thus, the movement of sliders 43 will drive the second slide rail 44 connected to it to move together. Then, the two second slide rails 44 at corresponding positions move closer to each other, which drives the two grippers 40 to gradually clamp the film. After the film is clamped, the limiting member removes the restriction on the movement of sliders 43 in the second slide rail 44. After the two grippers 40 clamp the film, the two second slide rails 44 can no longer move closer to each other. Then, the movement of sliders 43 transmits power to the clamping rollers 41 through the transmission member. The corresponding two clamping rollers 41 roll to the fingertip. During this process, the pressure cutter of the bag breaking mechanism 1 simultaneously cuts the film. After the finger sleeve 58 is formed and cut off, the two grippers 40 of each group clamp the finger pad, and the two clamping rollers 41 clamp the fingertip.

[0041] After the finger sleeve 58 is placed into the packaging bag, the two sliders 43 move away from each other under the drive of the drive source. At this time, the limiting member does not restrict the movement of the slider 43 in the second slide rail 44. Instead, the transmission member drives the clamping roller 41 to gradually move away from the fingertip, exposing the fingertip of the finger sleeve 58. Then, the fingertip pressing mechanism 2 presses the fingertip. Next, the limiting member restricts the movement of the slider 43 in the second slide rail 44. As the two sliders 43 move away from each other, the two second slide rails 44 move away from each other, causing each set of two grippers 40 to release their grip on the fingertip.

[0042] Preferably, the transmission component includes an air chamber 45 disposed on the second slide rail 44 and a piston 46 disposed on the gripper 40. The air chamber 45 and the piston 46 at the corresponding position are connected by an air guide pipe. The piston rod of the piston 46 is connected to the gripper roller 41 through a rocker arm 47. A first elastic element is provided between the rocker arm 47 and the piston rod. Under the elastic force of the first elastic element, the length direction of the rocker arm 47 is always parallel to the movement direction of the gripper 40. When the air chamber 45 is squeezed by the slider 43 at the corresponding position, the piston 46 drives the gripper roller 41 to move to grip the fingertip of the finger sleeve 58.

[0043] Specifically, the air chamber 45 is a compressible structure and is not elastic. It is filled with gas and is connected to the piston 46 through a gas guide pipe. The radial dimension of the air chamber 45 is larger than that of the piston 46. That is, when the air chamber 45 is compressed by a unit distance, the piston rod in the piston 46 can move by more than a unit distance, so as to achieve the effect of stroke amplification. During operation, the slider 43 squeezes the air chamber 45, the air chamber 45 is compressed, and the gas is pushed towards the piston 46. The piston rod in the piston 46 is driven by the gas to move the clamping roller 41, so that the action of clamping the fingertip can be realized by each set of two clamping rollers 41.

[0044] The piston rod is connected to the clamping roller 41 by a rocker arm 47. Under the elastic force of the first elastic element, the rocker arm 47 tends to be parallel to the moving direction of the clamp 40 in its length direction. That is, when the clamping roller 41 is not in use, it can rest against the clamp 40 and basically does not extend beyond the length, thickness and width range of the clamp 40. When the clamping roller 41 is pushed away from the clamp 40, under the elastic force of the first elastic element, the rocker arm 47 can drive the clamping roller 41 to contact the surface of the finger sleeve 58.

[0045] Preferably, the limiting member includes a stop block 48 that is oscillating on each of the second slide rails 44 and a drive mechanism for driving the stop block 48 to oscillate.

[0046] Specifically, the stop block 48 is used to prevent the slider 43 from sliding within the second slide rail 44. When the slider 43 needs to slide within the second slide rail 44, the obstructing effect of the stop block 48 needs to be removed. Therefore, the drive mechanism needs to drive the stop block 48 to swing. Thus, the drive mechanism can be a motor.

[0047] In the aforementioned embodiments, the swinging of the block 48 was achieved actively, thus increasing the use of a driving source. In this embodiment, the swinging of the block 48 is controlled passively. That is, in the preferred embodiment, the driving mechanism includes a first pressing groove 49 and a second pressing groove 50 arranged on each block 48, and a rod 53 arranged on each second slide rail 44 by sliding friction. That is, after the rod 53 is moved to a certain position on the second slide rail 44 by external force, it can stop at that position by friction. Each rod 53 is provided with a first pressing rod 51 that cooperates with the first pressing groove 49 and a second pressing rod that cooperates with the second pressing groove 50. 52; During the process of the two grippers 40 moving away from each other, the two rods 53 pull each other, the first extrusion groove 49 engages with the corresponding first extrusion rod 51, and at the same time the second extrusion groove 50 disengages from the corresponding second extrusion rod 52; During the process of the two grippers 40 moving closer to each other, the two rods 53 squeeze each other, the first extrusion groove 49 disengages from the corresponding first extrusion rod 51, and at the same time the second extrusion groove 50 engages with the corresponding second extrusion rod 52; When it is necessary to prevent the slider 43 from extruding the air chamber 45, the first extrusion groove 49 engages with the corresponding first extrusion rod 51; When it is necessary to prevent the slider 43 from stretching the air chamber 45, the second extrusion groove 50 engages with the corresponding second extrusion rod 52.

[0048] Specifically, the stop block 48 is oscillatingly arranged on the second slide rail 44 via a pin. Its first extrusion groove 49 and second extrusion groove 50 have identical structures. When the length direction of the stop block 48 is parallel to the horizontal direction, their positions are vertically symmetrical. The length direction of the rods 53 on each second slide rail 44 is parallel to the vertical. In the initial state, i.e., when the distance between the two grippers 40 is at its maximum, the slider 43 is positioned away from the grippers 40 within the second slide rail 44. At this time, the first extrusion rods 51 are all inserted into the corresponding first extrusion grooves 49. The stop block 48 prevents the slider 43 from moving along the grippers 40 near their corresponding positions within the second slide rail 44. Furthermore, the two rods 53 in opposite positions also mutually restrict each other, preventing the two second slide rails 44 from moving... They can move in directions away from each other, such as setting up blocking structures on each other's movement paths. When it is necessary to clamp the finger sleeve 58, the two sliders 43 are driven to move closer to each other. Due to the restriction of the block 48, the two second slide rails 44 drive their respective connected claws 40 to move closer to each other to clamp the fingertip. As the fingertip is gradually clamped, that is, the claws 40 have already contacted the surface of the fingertip but have not clamped it (the finger sleeve 58 can be pulled out from between the two claws 40 by using external force), then the two rods 53 begin to obstruct each other and form mutual compression as the two sliders 43 move closer to each other. That is, at this position, the two rods 53 also set up blocking structures on each other's movement paths. As the two claws 40 continue to clamp the fingertip... When the rod 53 moves relative to the corresponding second slide rail 44, the rod 53 causes the first extrusion rod 51 to gradually disengage from the first extrusion groove 49, while simultaneously causing the second extrusion rod 52 to gradually engage with the second extrusion groove 50. During this process, there is a critical section where the first extrusion rod 51 and the first extrusion groove 49 are insufficient to restrict the swing of the block 48, and the second extrusion rod 52 and the second extrusion groove 50 are also insufficient to restrict the swing of the block 48. Therefore, the slider 43 can then compress the block 48 to swing, causing the block 48 to move away from the slider 43's path. After the slider 43 passes the swing range of the block 48, during the process of the slider 43 compressing the corresponding air chamber 45, the radial dimension of the air chamber 45 is greater than the radial dimension of the piston 46, and the gas flows from the larger... As the air chamber 45 is compressed into the smaller space, it encounters resistance. This compression of the air chamber 45 also provides a pushing force to the corresponding second slide rail 44, causing the two second slide rails 44 to continue moving closer together. This allows the two grippers 40 to clamp the finger sleeve 58. During this process, the second compression rod 52 compresses the corresponding second compression groove 50, causing the stop block 48 to swing back to a position parallel to the horizontal direction. After the two grippers 40 clamp the fingertip, the two sliders 43 continue to move within the second slide rail 44 to compress their respective air chambers 45. The piston 46 drives the clamping roller 41 to gradually clamp the fingertip. During the process of each pair of grippers 40 removing their grip on the fingertip, i.e., as they gradually reach their furthest point...During the disengagement of the second extrusion rod 52 from the corresponding second extrusion groove 50, and the engagement of the first extrusion rod 51 with the corresponding first extrusion groove 49, a critical section still exists, allowing the slider 43 to return to the position furthest from the corresponding gripper 40 on the second slide rail 44, and the blocking block 48 to swing back to a position where its length direction is parallel to the horizontal direction.

[0049] That is, both the first extrusion groove 49 and the second extrusion groove 50 are divided into a sliding section 54 and a limiting section 55. When the first extrusion rod 51 is not in contact with the sliding section 54 of the first extrusion groove 49, the second extrusion rod 52 is disengaged from the limiting section 55 of the second extrusion groove 50. When the second extrusion rod 52 is not in contact with the sliding section 54 of the second extrusion groove 50, the first extrusion rod 51 is disengaged from the limiting section 55 of the first extrusion groove 49. Both of these processes are the critical sections mentioned above. When the first extrusion rod 51 extrudes the sliding section 54 of the first extrusion groove 49, the two are wedge-shaped to achieve the extrusion effect, which allows the block 48 to swing back to a position where the length direction is parallel to the horizontal direction. When the second extrusion rod 52 extrudes the sliding section 54 of the second extrusion groove 50, the two are also wedge-shaped to achieve the extrusion effect, which allows the block 48 to swing back to a position where the length direction is parallel to the horizontal direction. In these two processes, the swing direction of the block 48 is opposite.

[0050] Preferably, the blocking block 48 is located on the second slide rail 44 at the end away from the gripper 40. The movement of the slider 43 within the second slide rail 44 is divided into two strokes: In the first stroke, when the blocking block 48 obstructs the movement of the slider 43, the two sliders 43 move closer to each other within the same first slide rail 42, causing the two second slide rails 44 to move closer to each other, and the two grippers 40 of each group clamp the fingertip; In the second stroke, the blocking block 48 removes its obstruction to the slider 43, and the slider 43 continues to compress the air chamber 45, and the piston 46 drives the clamping roller 41 to clamp the fingertip.

[0051] Specifically, when the length of the stop block 48 is parallel to the horizontal direction, the slider 43 is located between the end of the second slide rail 44 away from the corresponding gripper 40 and the stop block 48. That is, the distance between the end of the second slide rail 44 and the stop block 48 is the same as the distance of the slider 43 parallel to the vertical direction. Then, the two sliders 43 in the same first slide rail 42 approach each other, which will drive the two second slide rails 44 to approach each other, so that the corresponding set of grippers 40 approaches each other to clamp the fingertip. This is the first stroke of the slider 43 during its movement. Then, the stop block 48 removes its obstruction to the slider 43, and the slider 43 can also slide in the second slide rail 44. Then, the two sliders 43 in the same first slide rail 42 continue to approach each other to squeeze their respective air chambers 45, so that the piston 46 drives the clamping roller 41 to clamp the fingertip. This is the second stroke of the slider 43.

[0052] In a further embodiment, the blocking block 48 is located in the middle of the second slide rail 44, and the movement of the slider 43 within the second slide rail 44 is divided into three strokes: In the first stroke, the slider 43 moves within the second slide rail 44 to compress the air chamber 45, and the piston 46 drives the clamping roller 41 to move to the end of the corresponding clamping jaw 40; In the second stroke, the blocking block 48 hinders the movement of the slider 43, and the two sliders 43 continue to move closer to each other within the same first slide rail 42, causing the two second slide rails 44 to move closer to each other, and the two clamping jaws 40 of each group clamp together. The fingertip is the abdomen; in the third stroke, the block 48 removes its obstruction to the slider 43, the slider 43 continues to compress the air chamber 45, and the piston 46 drives the clamping roller 41 to clamp the fingertip; the piston rod is connected to the center of the swing rod 47, and the swing rod 47 is also provided with an auxiliary roller 59. The auxiliary roller 59 and the clamping roller 41 are respectively placed at both ends of the length direction of the swing rod 47, and when the length direction of the swing rod 47 is parallel to the moving direction of the gripper 40, the farthest distance between the auxiliary roller 59 and the clamping roller 41 is greater than the thickness of the corresponding gripper 40.

[0053] Specifically, in the aforementioned embodiments, when the fingertip pressing mechanism 2 presses the fingertip, it also exerts a pressing effect on the packaging bag. The packaging bag is opened based on a mechanical structure to allow the finger to enter. That is, before the packaging bag reaches the position corresponding to the bag breaking mechanism, the opening of the packaging bag is closed. After the finger is inserted into the packaging bag, the opening of the packaging bag is also closed during transport. Therefore, when a part of the opening of the packaging bag is open, the rest is pressed closed. To avoid damaging the packaging bag by opening it too wide, the opening of the packaging bag is only wide enough for the two grippers to separate and insert the finger. Therefore, when the fingertip pressing mechanism 2 presses the fingertip, it also makes the opening size of the packaging bag smaller. This causes friction between the gripper 40 and the packaging bag when the gripper 40 is withdrawn from the packaging bag. Since the packaging bag is also thin and light, the friction between the gripper 40 and the packaging bag can easily damage the packaging bag.

[0054] Therefore, in this embodiment, the blocking block 48 is placed in the middle of the second slide rail 44, dividing the movement of the slider 43 into three strokes, namely the first stroke. When the two sliders 43 in the same first slide rail 42 approach each other, the two sliders 43 move in their respective corresponding second slide rails 44 to compress the air chamber 45. The piston 46 drives the clamping roller 41 to move to the end of the corresponding clamping claw 40. The swing rod 47 is parallel to the vertical direction in length under the elastic force of the first elastic element, and the clamping roller 41 contacts the surface of the material film. In the second stroke, the blocking block 48 hinders the movement of the slider 43. The two sliders 43 continue to approach each other in the same first slide rail 42, driving the two second slide rails 44 to approach each other. The two clamping claws 40 of each group clamp the fingertip. In the third stroke, the blocking block 48 removes its obstruction to the slider 43. The slider 43 continues to compress the air chamber 45. The piston 46 drives the clamping roller 41 to roll to the fingertip. Then the two clamping rollers 41 of each group clamp the fingertip.

[0055] After the finger cot 58 is inserted into the packaging bag, the two sliders 43 within the same first slide rail 42 move away from each other, which is the reverse process of the third stroke. The sliders 43 stretch the air chamber 45, and the piston 46 drives the clamping roller 41 to release its grip on the fingertip. The clamping roller 41 returns to the end of the corresponding gripper 40, but the swing arm 47 remains in a vertical state. After the fingertip pressing mechanism 2 presses down on the fingertip, the packaging bag is pressed and comes into contact with the auxiliary roller 59. Subsequently, the two sliders 43 continue to move away from each other. Due to the obstruction of the blocking block 48, the two grippers 40 are driven to move away from each other and release their grip on the fingertip, which is the reverse process of the third stroke. In the reverse process of the second stroke, after the two grippers 40 return to their furthest positions, the two sliders 43 do not continue to move away from each other. Instead, the grippers 40 first withdraw from the packaging bag. During this process, due to the action of the auxiliary roller 59, frictional contact between the grippers 40 and the packaging bag is avoided, thus protecting the packaging bag from damage. To avoid the auxiliary roller 59 exerting too much support on the packaging bag, the part of the swing arm corresponding to the auxiliary roller 59 can be set as an elastic telescopic mechanism. Afterward, the two sliders 43 continue to move away from each other, causing the gripper roller 41 to return to its initial position, that is, the position where the length direction of the swing arm 47 is not parallel to the vertical.

[0056] When the block 48 does not restrict the slider 43 from sliding within the second slide rail 44, as the two sliders 43 move away from each other, the lower gripper 40 is easily affected by gravity and moves down along with the slider 43 at its corresponding position. Therefore, when the gripping roller 41 has not completely removed its grip on the fingertip, the gripper 40 no longer clamps the fingertip. As a result, the movement of the gripping roller 41 may cause the finger sleeve 58 to move within the packaging bag. This will cause the fingertip pressing mechanism 2 to fail to press down on the fingertip. Therefore, it is necessary to restrict the position of each pair of grippers 40 as the two sliders 43 move away from each other and the gripping roller 41 gradually removes its grip on the fingertip.

[0057] Therefore, in a further embodiment, each rod 53 is provided with a first protrusion 56 and a second protrusion 57; during the first stroke, when the slider 43 squeezes the air chamber 45, the two first protrusions 56 on the two rods 53 jointly prevent the two rods 53 from moving relative to each other, and the distance between the two grippers 40 in each group remains unchanged; when the fingertip pressing mechanism 2 needs to press the fingertip, the two grippers 40 in each group clamp the fingertip, the slider 43 stretches the air chamber 45, the two second protrusions 57 on the two rods 53 jointly prevent the two rods 53 from moving relative to each other, and the distance between the two grippers 40 in each group remains unchanged. The rod 53 has a certain elasticity. When the slider 43 drives the corresponding second slide rail 44 to move together, when the two rods 53 move relative to each other, they can undergo elastic deformation under the squeezing action of the first protrusion 56 or the second protrusion 57, so as to pass over the position of the first protrusion 56 or the second protrusion 57.

[0058] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present invention.

Claims

1. An automatic packaging machine for drug delivery finger cots, comprising a bag-breaking mechanism, a finger cot gripping mechanism, and a fingertip pressing mechanism, wherein the finger cot consists of a fingertip and a finger pad, characterized in that, The finger sleeve gripping mechanism includes several sets of grippers and driving components. Each set of grippers has two grippers, and each gripper is equipped with a gripping roller. During the stroke of the bag breaking mechanism pressing the finger sleeve off the material film, several sets of grippers first clamp the finger pad based on the drive of the drive component, and each set of gripping rollers then clamps the finger tip based on the drive of the drive component. After the finger cot enters the packaging, several sets of clamping rollers first remove their grip on the fingertip based on the drive of the drive component, the fingertip pressing mechanism presses the fingertip, and several sets of grippers then remove their grip on the finger pad based on the drive of the drive component. The driving component includes a first slide rail and two sliders slidably disposed within the first slide rail. Each gripper is fixedly connected to a second slide rail, and each slider is slidably connected to the second slide rail. A transmission component is provided on the second slide rail, which transmits the power of the slider to the corresponding gripper roller. A limiting component is also provided on the second slide rail. During the process of several sets of grippers clamping the fingertip based on the slider, the limiting component restricts the transmission component from transmitting power to the corresponding clamping roller. After each of the several sets of grippers clamps the fingertip of a finger sleeve, the limiting component removes the transmission restriction on the transmission component. The transmission component includes an air chamber mounted on the second slide rail and a piston mounted on the gripper. The air chamber and the piston at the corresponding position are connected by an air guide pipe. The piston rod of the piston is connected to the gripper roller via a rocker arm. A first elastic element is provided between the rocker arm and the piston rod. Under the elastic force of the first elastic element, the length direction of the rocker arm is always parallel to the movement direction of the gripper. When the air chamber is squeezed by the slider at the corresponding position, the piston drives the gripper roller to move to clamp the fingertip of the finger sleeve. The limiting component includes a oscillating block disposed on each of the second slide rails and a driving mechanism for driving the oscillating block. The driving mechanism includes a first extrusion groove and a second extrusion groove arranged on each block, and also includes a rod body arranged on each second slide rail by means of sliding friction. Each rod body is provided with a first extrusion rod that cooperates with the first extrusion groove and a second extrusion rod that cooperates with the second extrusion groove. As the two jaws move away from each other in each group, the two rods pull each other, the first extrusion groove engages with the corresponding first extrusion rod, and at the same time the second extrusion groove disengages from the corresponding second extrusion rod. During the process of the two grippers approaching each other, the two rods squeeze each other, the first squeezing groove disengages from the corresponding first squeezing rod, and at the same time the second squeezing groove engages with the corresponding second squeezing rod. When it is necessary to prevent the slider from squeezing the air chamber, the first extrusion groove is inserted into the corresponding first extrusion rod; When it is necessary to prevent the slider from stretching the air chamber, the second extrusion groove is inserted into the corresponding second extrusion rod.

2. The automatic packaging machine for drug delivery finger cots according to claim 1, characterized in that, Both the first extrusion groove and the second extrusion groove are divided into a sliding section and a limiting section.

3. The automatic packaging machine for drug delivery finger cots according to claim 2, characterized in that, The stop block is located on the second slide rail at the end away from the gripper, and the movement of the slider within the second slide rail is divided into two strokes: In the first stroke, when the block obstructs the movement of the slider, the two sliders move closer to each other in the same first slide rail, causing the two second slide rails to move closer to each other, and the two grippers of each group clamp the fingertip. In the second stroke, the stop block removes its obstruction to the slider, and the slider continues to compress the air chamber, causing the piston to drive the clamping rollers to hold the fingertips.

4. The automatic packaging machine for drug delivery finger cots according to claim 2, characterized in that, The stop block is located in the middle of the second slide rail, and the movement of the slider within the second slide rail is divided into three strokes: In the first stroke, the slider moves within the second slide rail to compress the air chamber, and the piston drives the clamping roller to move to the end of the corresponding gripper. In the second stroke, the block hinders the movement of the slider, and the two sliders continue to move closer to each other in the same first slide rail, which in turn drives the two second slide rails to move closer to each other, and the two grippers of each group clamp the fingertip. In the third stroke, the stop block removes its obstruction to the slider, and the slider continues to compress the air chamber, causing the piston to drive the clamping rollers to hold the fingertips.

5. The automatic packaging machine for drug delivery finger cots according to claim 4, characterized in that, The piston rod is connected to the center of the swing rod, and the swing rod is also provided with an auxiliary roller. The auxiliary roller and the clamping roller are respectively placed at both ends of the swing rod along its length. When the length of the swing rod is parallel to the moving direction of the clamp, the farthest distance between the auxiliary roller and the clamping roller is greater than the thickness of the corresponding clamp.

6. The automatic packaging machine for drug delivery finger cots according to claim 4, characterized in that, Each of the rods is provided with a first protrusion and a second protrusion; During the first stroke, the slider squeezes the air chamber, and the two first protrusions on the two rods work together to prevent the two rods from moving relative to each other. The distance between the two grippers in each set remains unchanged. When the fingertip pressing mechanism is needed to press the fingertip, each set of two grippers holds the fingertip, the slider stretches the air chamber, and the two second protrusions on the two rods jointly prevent the relative movement of the two rods, and the distance between each set of two grippers remains unchanged.

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