Gluing detection device for liquid medicine filter
By designing a glue-coating detection device for the liquid filter, the clamping, limiting and gas testing mechanisms are used to detect whether the connection between the liquid filter and the infusion hose is glued, which solves the safety hazards caused by the un glued coating of the liquid filter and ensures the quality of the infusion device.
Patent Information
- Application Number
- CN202421910899.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-08
AI Technical Summary
The existing disposable infusion equipment lacks a liquid filter glue detection device, which causes the liquid filter and the infusion hose to be separated without glue, affecting the safety of use.
A medical liquid filter glue coating detection device is designed, including a clamping seat, hose sealing mechanism, guide mechanism, limiting mechanism and air test mechanism. The infusion hose is clamped through the cylinder and the pneumatic fingers, and the air blowing tube is used to detect whether the connection between the medical liquid filter and the infusion hose is glued.
Effectively detect whether the liquid filter and the infusion hose are glued to ensure that their connection is firm, eliminate safety hazards, and ensure the quality of the disposable infusion device.
Smart Images

Figure CN223154808U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of disposable infusion sets, in particular to a glue coating detection device for a liquid medicine filter. Background Art
[0002] A disposable infusion set generally consists of eight parts connected together, namely a venous needle or injection needle, a needle cap, an infusion hose, a liquid medicine filter, a flow rate regulator, a drip chamber, a bottle stopper puncture device, and an air filter. Some infusion sets also have injection parts, medicine adding ports, etc. It is a common medical consumable. Since a disposable infusion set is composed of multiple components, in order to improve the assembly efficiency of the disposable infusion set, a disposable infusion set assembly device is used for the assembly work. The disposable infusion set device has multiple devices, and each device can complete an assembly process. After one device completes an assembly process, the clamping seat of the material transfer device of the disposable infusion set device will transport the infusion hose to the next process for assembly work. The material transfer device is in a runway shape, and each assembly device of the disposable infusion set device is distributed around the material transfer device, so as to assemble individual components together and finally form a complete disposable infusion set.
[0003] Among them, the liquid medicine filter needs to be assembled with the infusion hose. When the two are assembled, the connection end of the liquid medicine filter needs to be inserted into the pipe orifice of the infusion hose. In order to ensure the firmness after the two are assembled, a glue coating device is used to apply glue on the inner wall of the pipe orifice of the infusion hose or the outer wall of the connection end of the liquid medicine filter. However, in the actual glue coating process, due to some reasons, there will be a situation of missed coating, resulting in that although the connection end of the liquid medicine filter is inserted into the pipe orifice of the infusion hose, it is not fastened with glue, and there is a hidden danger of falling off and separating. If the liquid medicine filter and the infusion hose are separated during actual use, it is extremely easy to affect the physical health of the users. Since there is no detection device on the existing disposable infusion set device, it is also difficult to detect each infusion hose assembled with the liquid medicine filter by manual detection. Therefore, some uncoated liquid medicine filters and infusion hoses will directly enter the next assembly process after being assembled, and finally the quality of the assembled disposable infusion set cannot be guaranteed. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide a glue coating detection device for a liquid medicine filter, which can directly detect after the liquid medicine filter and the infusion hose are assembled. If it is found that there is no glue coating, the liquid medicine filter and the infusion hose are directly separated, so that they cannot continue the next assembly process, effectively guaranteeing the final quality of the disposable infusion set.
[0005] The technical solution adopted by the utility model to solve the above technical problems is as follows:
[0006] The utility model discloses a glue coating detection device for a liquid medicine filter, which comprises a clamping seat and a main support on the left side of the clamping seat. An infusion hose is clamped on the clamping seat. A hose sealing mechanism corresponding to the position of the clamping seat is arranged on the right side of the upper part of the main support, and the hose sealing mechanism can clamp and seal a part of the infusion hose tightly; An upper guiding mechanism is arranged on the left side of the upper part of the main support, and an upper filter limiting mechanism is arranged on the upper guiding mechanism; A right support is arranged directly below the upper guiding mechanism; A lower guiding mechanism matching the upper guiding mechanism is arranged on the right support; The upper guiding mechanism and the lower guiding mechanism can approach each other to clamp the infusion hose; A lower filter limiting mechanism is arranged on the lower guiding mechanism, and the upper filter limiting mechanism and the lower filter limiting mechanism can approach each other to limit the liquid medicine filter assembled at the left end of the infusion hose; An aggregate box corresponding to the position of the lower filter limiting mechanism is arranged on the right support, and the opening of the aggregate box faces upward; A left support is arranged on the left side of the right support; An air inspection mechanism matching the liquid medicine filter is arranged on the left support, and the air inspection mechanism can blow air into the infusion hose through the liquid medicine filter.
[0007] The main support is composed of first vertical plates on the front and rear sides of the right support and a connecting plate; A connecting part extends rightward from the upper end of the first vertical plate, and the connecting parts at the upper ends of the first vertical plates on the left and right sides are connected by a connecting plate.
[0008] The hose sealing mechanism includes a first cylinder mounting seat arranged on the upper surface of the middle part of the connecting plate; A first cylinder matching the first cylinder mounting seat is arranged on the right side wall of the first cylinder mounting seat; A guide part is arranged at the lower end of the piston rod of the first cylinder; A first chute is arranged on the left side wall of the guide part; A first slide rail matching the first chute is arranged on the right side wall of the first cylinder; An adjusting seat is arranged at the lower end of the guide part; Long round holes which are symmetrical to each other are arranged on the front and rear sides of the adjusting seat; A sealing seat matching the adjusting seat is arranged on the lower surface of the adjusting seat, and a plurality of uniformly distributed screw holes are arranged on the sealing seat; A plurality of uniformly distributed pneumatic fingers are arranged on the lower surface of the sealing seat; Sealing clamping arms matching the pneumatic fingers are arranged on the clamping claws on the front and rear sides of the pneumatic fingers, and the lower end positions of the sealing clamping arms correspond to the position of the clamping seat.
[0009] Part of the pneumatic fingers are uniformly arranged on the right part of the lower surface of the sealing seat from front to back, and the other part of the pneumatic fingers are uniformly arranged on the left part of the lower surface of the sealing seat from front to back; The sealing clamping arms on the pneumatic fingers arranged on the right part of the lower surface of the sealing seat and the sealing clamping arms on the pneumatic fingers arranged on the left part of the lower surface of the sealing seat are adjacently distributed.
[0010] The upper guiding mechanism includes a guiding seat provided on the left side wall of the middle part of the connecting plate; a second cylinder mounting plate is provided at the upper end of the guiding seat; a second cylinder is provided at the center of the upper surface of the left part of the second cylinder mounting plate; the lower end of the piston rod of the second cylinder passes downward through the second cylinder mounting plate and is provided with an upper clamping plate mounting seat; an upper clamping plate matching the upper clamping plate mounting seat is provided on the upper clamping plate mounting seat; symmetric second slide rails are provided on the front and rear sides of the left side wall of the guiding seat; symmetric second sliders matching the second slide rails are provided on the front and rear sides of the right side wall of the upper clamping plate mounting seat; the upper clamping plate is composed of a plurality of upper tooth plates evenly distributed from left to right and a plurality of upper spacer plates evenly distributed from left to right, and the upper tooth plates and the upper spacer plates are adjacent to each other; a plurality of evenly distributed upper teeth are provided on the lower surface of the upper tooth plate.
[0011] The upper filter limiting mechanism includes third cylinder mounting plates provided on the front and rear sides of the upper surface of the upper clamping plate mounting seat; third cylinders matching the third cylinder mounting plates are provided on the third cylinder mounting plates; the lower ends of the piston rods of the third cylinders on the front and rear sides are connected by an upper limiting plate; a plurality of evenly distributed left upper semi-circular holes are provided on the left side wall of the lower edge of the upper limiting plate; a plurality of evenly distributed right upper semi-circular holes are provided on the right side wall of the lower edge of the upper limiting plate; the right upper semi-circular holes and the left upper semi-circular holes are coaxial and communicate with each other, and the diameter of the right upper semi-circular holes is smaller than that of the left upper semi-circular holes.
[0012] The right bracket includes a right seat plate, and symmetric second vertical plates are provided on the front and rear sides of the upper surface of the right seat plate; the lower guiding mechanism includes a fourth cylinder provided on the upper part of the second vertical plate; a lifting block is provided at the upper end of the piston rod of the fourth cylinder; the lifting blocks on the front and rear sides are connected by a lower clamping plate mounting seat; a lower clamping plate matching the lower clamping plate mounting seat is provided on the lower clamping plate mounting seat, and the upper clamping plate is located directly above the lower clamping plate; a fifth cylinder mounting seat is provided on the left side of the middle part of the right seat plate; a fifth cylinder matching the fifth cylinder mounting seat is provided on the fifth cylinder mounting seat; a pushing block is provided on the left side wall of the middle part of the right seat plate, and the right end of the piston rod of the fifth cylinder is provided on the pushing block; symmetric third sliders are provided on the front and rear sides of the lower surface of the right seat plate; symmetric third slide rails matching the third sliders are provided on the front and rear sides below the right seat plate; the lower clamping plate is composed of a plurality of lower tooth plates evenly distributed from left to right and a plurality of lower spacer plates evenly distributed from left to right, and the lower tooth plates and the lower spacer plates are adjacent to each other; a plurality of lower teeth corresponding to the positions of the upper teeth are provided on the upper surface of the lower tooth plate.
[0013] The lower filter limiting mechanism includes sixth cylinder mounting plates arranged on the front and rear sides of the lower surface of the lower clamping plate; sixth cylinders matching the sixth cylinder mounting plates are arranged on the sixth cylinder mounting plates; the upper ends of the piston rods of the sixth cylinders on the front and rear sides are connected by a lower limiting plate; a plurality of left lower semi-circular holes evenly distributed from front to back are arranged on the left side wall of the upper edge of the lower limiting plate; a plurality of right lower semi-circular holes evenly distributed from front to back are arranged on the right side wall of the upper edge of the lower limiting plate; the right lower semi-circular holes and the left lower semi-circular holes are coaxial and communicate with each other; the diameter of the right lower semi-circular hole is smaller than that of the left lower semi-circular hole; the aggregate box is arranged between the second vertical plates on the front and rear sides and is located directly below the lower limiting plate.
[0014] The left bracket includes a left seat plate; third vertical plates symmetrical to each other are arranged on the front and rear sides of the upper surface of the left seat plate; the upper ends of the third vertical plates on the front and rear sides are connected by a fixing plate; the air inspection mechanism includes a seventh cylinder mounting seat arranged on the left side wall in the middle of the fixing plate; a seventh cylinder matching the seventh cylinder mounting seat is arranged on the seventh cylinder mounting seat; a slide plate is arranged at the right end of the piston rod of the seventh cylinder; fourth slide rails symmetrical to each other are arranged on the front and rear sides in the middle of the upper surface of the fixing plate; a plurality of fourth sliding blocks matching the fourth slide rails are arranged on the left and right sides of the lower surface of the slide plate; a blowing seat is arranged on the upper surface at the right end of the slide plate; a plurality of blowing pipes corresponding to the positions of the left lower semi-circular holes are arranged on the blowing seat; an eighth cylinder mounting plate is arranged on the upper surface of the blowing seat; eighth cylinders are arranged on the front and rear sides of the left side wall of the eighth cylinder mounting plate; the piston rods of the eighth cylinders on the front and rear sides both pass through the eighth cylinder mounting plate to the right and are connected by a pressing plate; a plurality of movable holes matching the blowing pipes are arranged on the pressing plate, and the blowing pipes pass through the movable holes; the left side wall of the pressing plate is attached to the right side wall of the blowing seat.
[0015] The blowing seat is composed of a left adjusting block and a right adjusting block located on the right side of the left adjusting block; the right side wall of the left adjusting block is attached to the left side wall of the right adjusting block; the left adjusting block and the right adjusting block are fixed by a plurality of evenly distributed screws; a plurality of guide holes coaxial with the blowing pipes are arranged on the right adjusting block; guide sliding sleeves matching the guide holes are arranged in the guide holes; a plurality of right adjusting holes coaxial with the guide holes are arranged on the right side wall of the left adjusting block; a plurality of left adjusting holes communicating with the right adjusting holes are arranged on the left side wall of the left adjusting block; the diameter of the left adjusting hole is smaller than that of the right adjusting hole; the blowing pipes pass through the left adjusting holes, the right adjusting holes, the guide sliding sleeves, and the movable holes in sequence from left to right; a limiting part is arranged on the outer wall of the part of the blowing pipe located in the right adjusting hole; a spring sleeved on the blowing pipe is arranged between the left side wall of the limiting part and the bottom of the right adjusting hole.
[0016] The beneficial effects of the utility model are:
[0017] Compared with the prior art, the glue coating detection device for the liquid medicine filter adopting the structure of the present utility model can blow air into the liquid medicine filter through the blowing pipe of the air inspection mechanism, so as to distinguish whether glue is coated when the liquid medicine filter is assembled with the infusion hose. If glue is not coated when the liquid medicine filter is assembled with the infusion hose, the liquid medicine filter and the infusion hose will be directly separated, making it impossible to continue the next assembly process, thereby effectively ensuring the final quality of the disposable infusion set, ensuring the firmness between the liquid medicine filter and the infusion hose during the actual use of the disposable infusion set, and effectively eliminating potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic structural diagram of the glue coating detection device for the liquid medicine filter of the present utility model from one angle;
[0019] Figure 2 is a schematic structural diagram of the glue coating detection device for the liquid medicine filter of the present utility model from another angle;
[0020] Figure 3 is a schematic structural diagram of the hose sealing mechanism;
[0021] Figure 4 is a schematic structural diagram when the upper guiding mechanism and the lower guiding mechanism are assembled;
[0022] Figure 5 is Figure 4 an enlarged view of part A of
[0023] Figure 6 is Figure 4 an enlarged view of part B of
[0024] Figure 7 is a schematic structural diagram of the upper guiding mechanism;
[0025] Figure 8 is a schematic structural diagram of the air inspection mechanism from one angle;
[0026] Figure 9 is a schematic structural diagram of the air inspection mechanism from another angle;
[0027] Figure 10 is a sectional view of the air inspection mechanism;
[0028] Figure 11 is Figure 10 an enlarged view of part C of
[0029] Figure 12 is a schematic structural diagram of the liquid medicine filter;
[0030] Figure 13 is a schematic structural diagram of the infusion hose. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0031] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:
[0032] Please refer to Figures 1 to 13 , the present utility model provides a glue coating detection device for a liquid medicine filter, which includes a clamping seat 7 and a main bracket 8 located on the left side of the clamping seat 7. An infusion hose 9 is clamped on the clamping seat 7. On the upper right side of the main bracket 8, there is a hose sealing mechanism 1 corresponding to the position of the clamping seat 7. The hose sealing mechanism 1 can tightly clamp and seal a part of the infusion hose 9; on the upper left side of the main bracket 8, there is an upper guiding mechanism 2, and an upper filter limiting mechanism 3 is arranged on the upper guiding mechanism 2; directly below the upper guiding mechanism 2, there is a right bracket 10; on the right bracket 10, there is a lower guiding mechanism 4 matching the upper guiding mechanism 2; the upper guiding mechanism 2 and the lower guiding mechanism 4 can approach each other to clamp the infusion hose 9; on the lower guiding mechanism 4, there is a lower filter limiting mechanism 5, and the upper filter limiting mechanism 3 and the lower filter limiting mechanism 5 can approach each other to limit the liquid medicine filter 11 assembled at the left end of the infusion hose 9; on the right bracket 10, there is an aggregate box 12 corresponding to the position of the lower filter limiting mechanism 5, and the opening of the aggregate box 12 faces upward; on the left side of the right bracket 10, there is a left bracket 13; on the left bracket 13, there is a gas testing mechanism 6 matching the liquid medicine filter 11, and the gas testing mechanism 6 can blow air into the infusion hose 9 through the liquid medicine filter 11.
[0033] The main bracket 8 is composed of first vertical plates 801 located on the front and rear sides of the right bracket 10 and a connecting plate 802; an extension connecting part 803 extends to the right at the upper end of the first vertical plate 801, and the connecting parts 803 at the upper ends of the first vertical plates 801 on the left and right sides are connected by the connecting plate 802.
[0034] The hose sealing mechanism 1 includes a first cylinder mounting seat 101 arranged on the upper surface of the middle part of the connecting plate 802; on the right side wall of the first cylinder mounting seat 101, there is a first cylinder 102 matching it; at the lower end of the piston rod of the first cylinder 102, there is a guiding part 103; on the left side wall of the guiding part 103, there is a first sliding groove 104; on the right side wall of the first cylinder 102, there is a first sliding rail 105 matching the first sliding groove 104; at the lower end of the guiding part 103, there is an adjusting seat 106; on the front and rear sides of the adjusting seat 106, there are symmetrically arranged long circular holes 107; on the lower surface of the adjusting seat 106, there is a sealing seat 108 matching it, and a number of uniformly distributed screw holes 109 are arranged on the sealing seat 108; on the lower surface of the sealing seat 108, there are a number of uniformly distributed pneumatic fingers 110; on the front and rear clamping claws of the pneumatic fingers 110, there are sealing clamping arms 111 matching them, and the lower end position of the sealing clamping arms 111 corresponds to the position of the clamping seat 7.
[0035] A part of the pneumatic fingers 110 are evenly arranged from front to back on the right part of the lower surface of the closed seat 108, and another part of the pneumatic fingers 110 are evenly arranged from front to back on the left part of the lower surface of the closed seat 108; the closed clamping arms 111 on the pneumatic fingers 110 arranged on the right part of the lower surface of the closed seat 108 are adjacent to the closed clamping arms 111 on the pneumatic fingers 110 arranged on the left part of the lower surface of the closed seat 108.
[0036] The upper guiding mechanism 2 includes a guiding seat 201 arranged on the left side wall of the middle part of the connecting plate 802; a second cylinder mounting plate 202 is arranged at the upper end of the guiding seat 201; the center of the upper surface of the left part of the second cylinder mounting plate 202 is provided with a second cylinder 203; the lower end of the piston rod of the second cylinder 203 passes through the second cylinder mounting plate 202 downward and is provided with an upper clamping plate mounting seat 204; an upper clamping plate 205 matching with it is arranged on the upper clamping plate mounting seat 204; symmetric second slide rails 206 are arranged on the front and back sides of the left side wall of the guiding seat 201; second sliders 207 matching with the second slide rails 206 are arranged on the front and back sides of the right side wall of the upper clamping plate mounting seat 204; the upper clamping plate 205 is composed of a plurality of upper tooth plates 208 evenly distributed from left to right and a plurality of upper spacer plates 209 evenly distributed from left to right, and the upper tooth plates 208 and the upper spacer plates 209 are adjacent to each other; a plurality of evenly distributed upper teeth 210 are arranged on the lower surface of the upper tooth plates 208.
[0037] The upper filter limiting mechanism 3 includes third cylinder mounting plates 301 arranged on the front and back sides of the upper surface of the upper clamping plate mounting seat 204; third cylinders 302 matching with them are arranged on the third cylinder mounting plates 301; the lower ends of the piston rods of the third cylinders 302 on the front and back sides are connected by an upper limiting plate 303; a plurality of evenly distributed left upper semi-circular holes 304 are arranged on the left side wall of the lower edge of the upper limiting plate 303; a plurality of evenly distributed right upper semi-circular holes 305 are arranged on the right side wall of the lower edge of the upper limiting plate 303; the right upper semi-circular holes 305 are coaxial and communicate with the left upper semi-circular holes 304, and the diameter of the right upper semi-circular holes 305 is smaller than that of the left upper semi-circular holes 304.
[0038] The right bracket 10 includes a right seat plate 1001, and symmetric second vertical plates 1002 are provided on the front and rear sides of the upper surface of the right seat plate 1001; the lower guiding mechanism 4 includes a fourth air cylinder 401 provided at the upper part of the second vertical plate 1002; the upper end of the piston rod of the fourth air cylinder 401 is provided with a lifting block 402; a lower clamping plate mounting seat 403 is connected between the lifting blocks 402 on the front and rear sides; the lower clamping plate mounting seat 403 is provided with a lower clamping plate 404 matching it, and the upper clamping plate 205 is located directly above the lower clamping plate 404; on the left side of the middle of the right seat plate 1001, there is a fifth air cylinder mounting seat 405; the fifth air cylinder mounting seat 405 is provided with a fifth air cylinder 406 matching it; on the left side wall of the middle of the right seat plate 1001, there is a pushing block 407, and the right end of the piston rod of the fifth air cylinder 406 is provided on the pushing block 407; symmetric third sliders 408 are provided on the front and rear sides of the lower surface of the right seat plate 1001; third slide rails 409 matching the third sliders 408 are provided on the front and rear sides below the right seat plate 1001; the lower clamping plate 404 is composed of a number of lower toothed plates 410 evenly distributed from left to right and a number of lower spacer plates 411 evenly distributed from left to right, and the lower toothed plates 410 and the lower spacer plates 411 are adjacent to each other; on the upper surface of the lower toothed plate 410, there are a number of lower teeth 412 corresponding to the positions of the upper teeth 210.
[0039] The lower filter limiting mechanism 5 includes sixth air cylinder mounting plates 501 provided on the front and rear sides of the lower surface of the lower clamping plate 404; the sixth air cylinder mounting plates 501 are provided with sixth air cylinders 502 matching them; a lower limiting plate 503 is connected between the upper ends of the piston rods of the sixth air cylinders 502 on the front and rear sides; on the left side wall of the upper edge of the lower limiting plate 503, there are a number of left lower semi-circular holes 504 evenly distributed from front to back; on the right side wall of the upper edge of the lower limiting plate 503, there are a number of right lower semi-circular holes 505 evenly distributed from front to back; the right lower semi-circular holes 505 are coaxial with and communicate with the left lower semi-circular holes 504; the diameter of the right lower semi-circular holes 505 is smaller than that of the left lower semi-circular holes 504; the aggregate box 12 is provided between the second vertical plates 1002 on the front and rear sides and is located directly below the lower limiting plate 503.
[0040] The left bracket 13 includes a left seat plate 1301; on the upper surface of the left seat plate 1301, symmetric third vertical plates 1302 are provided on the front and rear sides; the upper ends of the third vertical plates 1302 on the front and rear sides are connected by a fixing plate 1303; the air testing mechanism 6 includes a seventh cylinder mounting seat 601 provided on the left side wall in the middle of the fixing plate 1303; a seventh cylinder 602 matching the seventh cylinder mounting seat 601 is provided on the seventh cylinder mounting seat 601; a slide plate 603 is provided at the right end of the piston rod of the seventh cylinder 602; symmetric fourth slide rails 604 are provided on the front and rear sides in the middle of the upper surface of the fixing plate 1303; a plurality of fourth sliders 605 matching the fourth slide rails 604 are provided on the left and right sides of the lower surface of the slide plate 603; a blowing seat 606 is provided on the upper surface at the right end of the slide plate 603; a plurality of blowing pipes 607 corresponding to the positions of the left lower semi-circular holes 504 are provided on the blowing seat 606; an eighth cylinder mounting plate 608 is provided on the upper surface of the blowing seat 606; eighth cylinders 609 are provided on the front and rear sides of the left side wall of the eighth cylinder mounting plate 608; the piston rods of the eighth cylinders 609 on the front and rear sides both pass through the eighth cylinder mounting plate 608 to the right and are connected by a pressing plate 610; a plurality of moving holes 611 matching the blowing pipes 607 are provided on the pressing plate 610, and the blowing pipes 607 pass through the moving holes 611; the left side wall of the pressing plate 610 is attached to the right side wall of the blowing seat 606.
[0041] The blowing seat 606 is composed of a left adjusting block 612 and a right adjusting block 613 located on the right side of the left adjusting block 612; the right side wall of the left adjusting block 612 is attached to the left side wall of the right adjusting block 613; the left adjusting block 612 and the right adjusting block 613 are fixed by a plurality of evenly distributed screws; a plurality of guiding holes 614 coaxial with the blowing pipes 607 are provided on the right adjusting block 613; guiding sliding sleeves 615 matching the guiding holes 614 are provided in the guiding holes 614; a plurality of right adjusting holes 616 coaxial with the guiding holes 614 are provided on the right side wall of the left adjusting block 612; a plurality of left adjusting holes 617 communicating with the right adjusting holes 616 are provided on the left side wall of the left adjusting block 612; the diameter of the left adjusting holes 617 is smaller than that of the right adjusting holes 616; the blowing pipes 607 pass through the left adjusting holes 617, the right adjusting holes 616, the guiding sliding sleeves 615, and the moving holes 611 in sequence to the right; a limiting part 618 is provided on the outer wall of the part of the blowing pipe 607 located in the right adjusting hole 616; a spring 619 sleeved on the blowing pipe 607 is provided between the left side wall of the limiting part 618 and the bottom of the right adjusting hole 616.
[0042] The usage method of the present utility model is as follows:
[0043] After the infusion hose 9 and the liquid medicine filter 11 are assembled, the clamping seat 7 of the material transfer device for the disposable infusion set assembly will clamp the infusion hose 9 and transfer it to the position where the liquid medicine filter gluing and detection device is located. At this time, the position of the infusion hose 9 corresponds to the position of each pneumatic finger 110. Immediately afterwards, the first cylinder 102 can be started. At this time, the piston rod of the first cylinder 102 will drive the guide member 103 to move downward, so as to realize the downward movement of the adjustment seat 106. When the adjustment seat 106 moves downward, all the pneumatic fingers 110 move downward synchronously. When the pneumatic fingers 110 move downward to the actual required position, the sealing clamping arms 111 on the clamping claws on the front and rear sides of the pneumatic fingers 110 are just located on the front and rear sides of the infusion hose 9. After the pneumatic fingers 110 are started, the clamping claws of the pneumatic fingers 110 will control the sealing clamping arms 111 on the front and rear sides to approach and clamp the infusion hose 9. Finally, the inner walls of the clamped parts of the infusion hose 9 are in contact with each other, realizing the airtightness at this position and preventing air from passing through. The sealing clamping arms 111 for sealing the infusion hose 9 also play the role of positioning the right part of the infusion hose 9 at the same time. When actually sealing the infusion hose, there is no need to be limited to the method of clamping and sealing with pneumatic fingers. Other sealing methods can also be used. As long as the infusion hose is sealed, the subsequent gluing and detection work can be carried out. For example, a pressing rod is arranged on the adjustment seat, and the pressing rod is used to press down the infusion hose to deform and seal it.
[0044] Since the liquid medicine filter 11 is assembled on the left end nozzle of the infusion hose 9 at this time, the weight of the left end of the infusion hose 9 is relatively heavy, and it will sag. At this moment, the lower guiding mechanism 4 can be used to comb the left part of the infusion hose 9. First, start the fifth cylinder 406. At this time, the piston rod of the fifth cylinder 406 will push the push block 407 to the right, realizing the rightward movement of the right seat plate 1001. When the right seat plate 1001 moves to the right, the lower clamping plate 404 moves synchronously to the right. The lower clamping plate 404 is composed of a number of uniformly distributed lower toothed plates 410 and a number of uniformly distributed lower spacer plates 411, so as to realize the rightward movement of the lower toothed plate 410. Finally, the tooth grooves between the adjacent lower teeth 412 on the upper surface of the lower toothed plate 410 are just located right below the infusion hose 9. Immediately afterwards, the fourth cylinder 401 can be started. At this time, the piston rod of the fourth cylinder 401 will drive the lower clamping plate mounting seat 403 to move upward, so as to realize the upward movement of the lower toothed plate 410. As the lower toothed plate 410 continuously moves upward, the infusion hose 9 will fall into the tooth grooves between the adjacent lower teeth 412. Finally, the infusion hose 9 falls to the bottom of the tooth grooves between the adjacent lower teeth 412. As the lower toothed plate 410 continues to move upward, the originally sagging left part of the infusion hose 9 is gradually lifted. When the lower toothed plate 410 moves upward to the actual required height, the fifth cylinder 406 can be started again. At this time, the lower toothed plate moves to the left under the action of the fifth cylinder 406. When the lower toothed plate 410 moves to the left, the lower toothed plate 410 acts like a comb, combing the infusion hose 9, making the infusion hose 9 gradually become straight. When the lower toothed plate 410 moves to the left to the actual required position, the upper toothed plate 208 is just located directly above the upper spacer plate 209, so that the upper teeth 210 of the upper toothed plate 208 can enter the gap between the adjacent lower toothed plates 410, and the lower teeth 412 of the lower toothed plate 410 can enter the gap between the adjacent upper toothed plates 208.
[0045] When the left part of the infusion hose 9 is straightened by the lower toothed plate 410, the liquid medicine filter 11 also approaches a straight state. At this time, the piston rod of the sixth cylinder 502 can be used to drive the lower limit plate 503 to move upward. Since the lower limit plate 503 is located on the left side of the lower clamping plate 404, when the lower limit plate 503 moves upward to a certain height, the lower part of the main body of the liquid medicine filter 11 will be stuck into the left lower semi-circular hole 504, and the left end of the infusion hose 9 assembled with the connection end 1101 of the liquid medicine filter 11 is located in the right lower semi-circular hole 505. As the left lower semi-circular hole 504 lifts the liquid medicine filter 11, the liquid medicine filter 11 and the infusion hose 9 can be kept in a coaxial state.
[0046] At this time, the infusion hose 9 and the liquid medicine filter 11 are initially positioned. Immediately afterwards, the upper guiding mechanism 2 can be used to further position them. At this time, the second air cylinder 203 can be started. The piston rod of the second air cylinder 203 will drive the upper clamping plate mounting seat 204 to move downward, thereby realizing the downward movement of the upper tooth plate 208. As the upper tooth plate 208 continuously moves downward, the upper teeth 210 of the upper tooth plate 208 will be inserted into the gap between the adjacent lower tooth plates 410, and the lower teeth 412 of the lower tooth plate 410 will be inserted into the gap between the adjacent upper tooth plates 208. Since the positions of the upper teeth 210 and the lower teeth 412 correspond to each other, the tooth grooves between the adjacent upper teeth 210 and the tooth grooves between the adjacent lower teeth 412 are opposite. As the upper tooth plate 208 continuously moves downward, the space formed by the enclosure of the tooth grooves between the adjacent upper teeth 210 and the tooth grooves between the adjacent lower teeth 412 continuously shrinks, and finally the effect of clamping the left part of the infusion hose 9 is achieved.
[0047] After the left part of the infusion hose 9 is clamped, the liquid medicine filter 11 can be limited by the upper filter limiting mechanism 3. At this time, the third air cylinder 302 can be started. The piston rod of the third air cylinder 302 will drive the upper limiting plate 303 to move downward. As the upper limiting plate 303 continuously moves downward, finally the lower surface of the upper limiting plate 303 fits with the upper surface of the lower limiting plate 503. At this time, the upper part of the main body of the liquid medicine filter 11 is clamped into the left upper semi-circular hole 304, and the left end of the infusion hose 9 is located in the circular hole formed by the enclosure of the right upper semi-circular hole 305 and the right lower semi-circular hole 505. At the same time, the upper limiting plate 303 is located on the left side of the upper tooth plate 208, and the lower limiting plate 503 is located on the left side of the lower tooth plate 410. Therefore, there is a certain distance between the position where the liquid medicine filter 11 is limited and the position where the left part of the infusion hose 9 is clamped, so that the part between the position where the left part of the infusion hose 9 is clamped and the position where the liquid medicine filter 11 is located can be deformed under the action of an external force.
[0048] When the positions of the liquid medicine filter 11 and the infusion hose 9 are both positioned, the final air leakage inspection process can be carried out. At this time, the seventh cylinder 602 can be activated. The piston rod of the seventh cylinder 602 drives the slide plate 603 to move steadily to the right along the track of the fourth slide rail 604, thereby realizing the rightward movement of the air blowing pipe 607. Finally, the air blowing pipe 607 directly penetrates into the infusion end 1102 of the liquid medicine filter 11. Immediately afterwards, the eighth cylinder 609 is activated. At this time, the piston rod of the eighth cylinder 609 drives the pressure plate 610 to move to the right. Due to the existence of the movable hole 611, the presence of the air blowing pipe 607 will not affect the movement of the pressure plate 610. When the pressure plate 610 moves to the actual required position, the pressure plate 610 presses the liquid medicine filter 11 into the circular hole formed by the enclosure of the upper left semi-circular hole 304 and the lower left semi-circular hole 504 through the right side wall, realizing the fixation of the liquid medicine filter 11. The left end of the air blowing pipe 607 can be connected to the air source through a trachea, and the air pressure of the gas blown out by the air blowing pipe 607 can be controlled by a pressure regulating valve. First, the gas with a basic air pressure can be blown into the liquid medicine filter 11 through the right end nozzle of the air blowing pipe 607. Since the inside of the liquid medicine filter 11 is in a flowing state, the gas will finally enter the infusion hose 9. When the right part of the infusion hose 9 is sealed, the air pressure can achieve the effect of separating the left end of the infusion hose 9 from the liquid medicine filter 11. Due to the frictional force between the inner wall of the left end nozzle of the infusion hose 9 and the outer wall of the connection end 1101 of the liquid medicine filter 11, during the actual air leakage inspection process, the air pressure can be increased by a certain value through the pressure regulating valve. When the liquid medicine filter 11 remains stationary, the strong air pressure will cause the left part of the flexible infusion hose 9 to deform, such as bending, so that the connection end 1101 of the liquid medicine filter 11 is separated from the left end nozzle of the infusion hose 9. As the liquid medicine filter 11 and the infusion hose 9 are separated, it proves that no glue was applied during their assembly. If, under high pressure, the connection end 1101 of the liquid medicine filter 11 is firmly fixed inside the left end nozzle of the infusion hose 9, it proves that glue was applied during the assembly of the liquid medicine filter 11 and the infusion hose 9.
[0049] As described above, the utility model can be directly arranged around the material transfer device of the disposable infusion set assembly equipment and can be at the next working station of the assembly device of the liquid medicine filter and the infusion hose. After the liquid medicine filter 11 and the infusion hose 9 are assembled, they can be directly transported to the working station where the air leakage detection device is located by the clamping seat 7 of the material transfer device. At this time, the hose sealing mechanism 1 can clamp and seal the right part of the infusion hose 9 to prevent it from ventilating. Then, the upper guiding mechanism 2 and the lower guiding mechanism 4 are used to straighten and position the left part of the infusion hose 9. When there are two positioning points on the infusion hose 9, the stability of the infusion hose 9 during air leakage detection can be ensured. The upper filter limiting mechanism 3 and the lower filter limiting mechanism 5 cooperate to limit the liquid medicine filter 11, so that the liquid medicine filter 11 can ensure its own stability when the blowing pipe 607 blows air into the liquid medicine filter 11. When the liquid medicine filter 11 is fixed, once the infusion hose 9 is bent and deformed under the action of air pressure, the connecting end 1101 of the liquid medicine filter 11 will break away from the pipe orifice of the infusion hose 9. At this time, as the upper filter limiting mechanism 3 and the lower filter limiting mechanism 5 reset, the unfixed liquid medicine filter 11 will fall into the aggregate box 12 below. Thus, an accurate air leakage detection result can be obtained by whether the liquid medicine filter 11 is separated from the pipe orifice of the infusion hose 9 under the action of high-strength air pressure, and it can be effectively understood whether the connecting end 1101 of the liquid medicine filter 11 and the pipe orifice of the infusion hose 9 are firmly connected by gluing. With the unglued liquid medicine filter 11 and the infusion hose 9 being removed, the assembly quality between the infusion hose 9 and the liquid medicine filter 11 can be effectively guaranteed, thus ensuring the quality of the disposable infusion set after the overall assembly, ensuring the firmness between the liquid medicine filter and the infusion hose during the actual use of the disposable infusion set, and effectively eliminating potential safety hazards.
[0050] The edge of the upper side opening of the aggregate box 12 can extend outward and upward to form an inclined baffle 14. The inclined baffle 14 effectively increases the actual receiving range of the upper side opening of the aggregate box 12, ensuring to the greatest extent that the dropped liquid medicine filter 11 can accurately fall into the aggregate box 12, which is convenient for the collection of the separated liquid medicine filter 11.
[0051] One part of the pneumatic fingers is evenly arranged on the right part of the lower surface of the sealing seat 108 from front to back, and the other part of the pneumatic fingers 110 is evenly arranged on the left part of the lower surface of the sealing seat 108 from front to back. The sealing clamping arms 111 on the pneumatic fingers 110 arranged on the right part of the lower surface of the sealing seat 108 and the sealing clamping arms 111 on the pneumatic fingers 110 arranged on the left part of the lower surface of the sealing seat 108 are adjacent to each other. This distribution method of the pneumatic fingers 110 can make the most of the installation space on the lower surface of the sealing seat 108, effectively increase the actual installation quantity of the pneumatic fingers 110 on the sealing seat 108, and at the same time effectively increase the quantity of the infusion hoses 9 that the hose sealing mechanism 1 can seal at one time.
[0052] The air blowing seat 606 is composed of a left adjusting block 612 and a right adjusting block 613 located on the right side of the left adjusting block 612. The right side wall of the left adjusting block 612 is in contact with the left side wall of the right adjusting block 613. The left adjusting block 612 and the right adjusting block 613 are fixed by a number of uniformly distributed screws. The right adjusting block 613 is provided with a number of guide holes 614 coaxial with the air blowing pipe 607. A guide sliding sleeve 615 matching with the guide hole 614 is arranged in the guide hole 614. The right side wall of the left adjusting block 612 is provided with a number of right adjusting holes 616 coaxial with the guide holes 614. The left side wall of the left adjusting block 612 is provided with a number of left adjusting holes 617 communicating with the right adjusting holes 616. The diameter of the left adjusting hole 617 is smaller than that of the right adjusting hole 616. The air blowing pipe 607 sequentially passes through the left adjusting hole 617, the right adjusting hole 616, the guide sliding sleeve 615 and the movable hole 611 from left to right. A limiting part 618 is arranged on the outer wall of the part of the air blowing pipe 607 located in the right adjusting hole 616. A spring 619 sleeved outside the air blowing pipe 607 is arranged between the left side wall of the limiting part 618 and the bottom of the right adjusting hole 616. This structural design can effectively avoid the situation that the right end of the air blowing pipe 607 directly and rigidly presses against the infusion end 1102 of the liquid medicine filter 11, resulting in damage to the liquid medicine filter. When the air blowing pipe pushes the infusion end 1102 of the liquid medicine filter 11 to the right, a reaction force will be generated. This reaction force will cause the air blowing pipe 607 to move leftward. At this time, the limiting part 618 moves leftward synchronously. When the limiting part 618 moves leftward, the spring 619 is compressed and generates elasticity. This elasticity can play a buffering role when the right end of the air blowing pipe 607 pushes the liquid medicine filter 11, avoiding damage to the liquid medicine filter 11.
[0053] Long circular holes 107 which are symmetrical to each other are arranged on the front and rear sides of the adjusting seat 106. A sealing seat 108 matching with the adjusting seat 106 is arranged on the lower surface of the adjusting seat 106. A number of uniformly distributed screw holes 109 are arranged on the sealing seat 108. Just passing the screws downward through the long circular holes 107 and screwing them into the corresponding screw holes 109, and pressing the heads of the screws on the upper surface of the adjusting seat 106 can fix the adjusting seat 106 and the sealing seat 108. The existence of the long circular holes 107 and the multiple screw holes 109 enables the actual fixing position between the two to be adjusted according to actual needs, so as to effectively change the actual position of the pneumatic finger 110.
Claims
1. A glue coating detection device for a liquid medicine filter, comprising a clamping seat and a main bracket located on the left side of the clamping seat. An infusion hose is clamped on the clamping seat, and it is characterized in that: On the upper right side of the main bracket, there is a hose sealing mechanism corresponding to the position of the clamping seat, and the hose sealing mechanism can tightly clamp and seal a certain part of the infusion hose; on the upper left side of the main bracket, there is an upper guiding mechanism, and an upper filter limiting mechanism is arranged on the upper guiding mechanism; directly below the upper guiding mechanism, there is a right bracket; on the right bracket, there is a lower guiding mechanism matching the upper guiding mechanism; the upper guiding mechanism and the lower guiding mechanism can approach each other to clamp the infusion hose; on the lower guiding mechanism, there is a lower filter limiting mechanism, and the upper filter limiting mechanism and the lower filter limiting mechanism can approach each other to limit the liquid medicine filter assembled at the left end of the infusion hose; on the right bracket, there is an aggregate box corresponding to the position of the lower filter limiting mechanism, and the opening of the aggregate box faces upward; on the left side of the right bracket, there is a left bracket; on the left bracket, there is a gas inspection mechanism matching the liquid medicine filter, and the gas inspection mechanism can blow air into the infusion hose through the liquid medicine filter.
2. The glue coating detection device for a liquid medicine filter according to claim 1, wherein: The main bracket is composed of a first vertical plate located on the front and back sides of the right bracket and a connecting plate; the upper end of the first vertical plate extends to the right to form a connecting part, and the connecting parts at the upper ends of the first vertical plates on the left and right sides are connected by the connecting plate.
3. The glue application detection device for a liquid medicine filter according to claim 2, characterized in that: The hose sealing mechanism includes a first cylinder mounting seat arranged on the upper surface of the middle part of the connecting plate; on the right side wall of the first cylinder mounting seat, there is a first cylinder matching it; at the lower end of the piston rod of the first cylinder, there is a guiding part; on the left side wall of the guiding part, there is a first sliding groove; on the right side wall of the first cylinder, there is a first sliding rail matching the first sliding groove; at the lower end of the guiding part, there is an adjusting seat; on the front and back sides of the adjusting seat, there are symmetrically arranged long round holes; on the lower surface of the adjusting seat, there is a sealing seat matching it, and a number of uniformly distributed screw holes are arranged on the sealing seat; on the lower surface of the sealing seat, there are a number of uniformly distributed pneumatic fingers; on the front and back clamping claws of the pneumatic fingers, there are sealing clamping arms matching them, and the lower end position of the sealing clamping arms corresponds to the position of the clamping seat.
4. An adhesive coating detection device for a liquid medicine filter according to claim 3, characterized in that: Some of the pneumatic fingers are uniformly arranged on the right part of the lower surface of the sealing seat from front to back, and some of the pneumatic fingers are uniformly arranged on the left part of the lower surface of the sealing seat from front to back; the sealing clamping arms on the pneumatic fingers arranged on the right part of the lower surface of the sealing seat and the sealing clamping arms on the pneumatic fingers arranged on the left part of the lower surface of the sealing seat are adjacent to each other.
5. The glue coating detection device for a liquid medicine filter according to claim 2, characterized in that: The upper guiding mechanism includes a guiding seat arranged on the left side wall of the middle part of the connecting plate; at the upper end of the guiding seat, there is a second cylinder mounting plate; at the center of the upper surface of the left part of the second cylinder mounting plate, there is a second cylinder; the lower end of the piston rod of the second cylinder passes through the second cylinder mounting plate downward and is provided with an upper clamping plate mounting seat; on the upper clamping plate mounting seat, there is an upper clamping plate matching it; on the front and back sides of the left side wall of the guiding seat, there are symmetrically arranged second sliding rails; on the front and back sides of the right side wall of the upper clamping plate mounting seat, there are second sliders matching the second sliding rails; the upper clamping plate is composed of a number of upper tooth plates uniformly distributed from left to right and a number of upper spacer plates uniformly distributed from left to right, and the upper tooth plates and the upper spacer plates are adjacent to each other; on the lower surface of the upper tooth plate, there are a number of uniformly distributed upper teeth.
6. The glue coating detection device for a liquid medicine filter according to claim 5, characterized in that: The upper filter limiting mechanism includes third cylinder mounting plates arranged on the front and rear sides of the upper clamping plate mounting seat; third cylinders matching the third cylinder mounting plates are arranged on the third cylinder mounting plates; the lower ends of the piston rods of the third cylinders on the front and rear sides are connected by an upper limiting plate; a plurality of left upper semi-circular holes evenly distributed from front to back are arranged on the left side wall of the lower edge of the upper limiting plate; a plurality of right upper semi-circular holes evenly distributed from front to back are arranged on the right side wall of the lower edge of the upper limiting plate; the right upper semi-circular holes are coaxial and communicate with the left upper semi-circular holes, and the diameter of the right upper semi-circular holes is smaller than that of the left upper semi-circular holes.
7. An adhesive coating detection device for a liquid medicine filter according to claim 5, characterized in that: The right bracket includes a right seat plate, and second vertical plates which are symmetrical to each other are arranged on the front and rear sides of the upper surface of the right seat plate; the lower guiding mechanism includes a fourth cylinder arranged on the upper part of the second vertical plate; an elevating block is arranged at the upper end of the piston rod of the fourth cylinder; the elevating blocks on the front and rear sides are connected by a lower clamping plate mounting seat; a lower clamping plate matching the lower clamping plate mounting seat is arranged on the lower clamping plate mounting seat, and the upper clamping plate is located directly above the lower clamping plate; a fifth cylinder mounting seat is arranged on the left side of the middle of the right seat plate; a fifth cylinder matching the fifth cylinder mounting seat is arranged on the fifth cylinder mounting seat; a pushing block is arranged on the left side wall of the middle of the right seat plate, and the right end of the piston rod of the fifth cylinder is arranged on the pushing block; third sliders which are symmetrical to each other are arranged on the front and rear sides of the lower surface of the right seat plate; third slide rails matching the third sliders are arranged on the front and rear sides below the right seat plate; the lower clamping plate is composed of a plurality of lower tooth plates evenly distributed from left to right and a plurality of lower spacer plates evenly distributed from left to right, and the lower tooth plates and the lower spacer plates are adjacent to each other; a plurality of lower teeth corresponding to the positions of the upper teeth are arranged on the upper surface of the lower tooth plates.
8. An adhesive coating detection device for a liquid medicine filter according to claim 7, characterized in that: The lower filter limiting mechanism includes sixth cylinder mounting plates arranged on the front and rear sides of the lower surface of the lower clamping plate; sixth cylinders matching the sixth cylinder mounting plates are arranged on the sixth cylinder mounting plates; the upper ends of the piston rods of the sixth cylinders on the front and rear sides are connected by a lower limiting plate; a plurality of left lower semi-circular holes evenly distributed from front to back are arranged on the left side wall of the upper edge of the lower limiting plate; a plurality of right lower semi-circular holes evenly distributed from front to back are arranged on the right side wall of the upper edge of the lower limiting plate; the right lower semi-circular holes are coaxial and communicate with the left lower semi-circular holes; the diameter of the right lower semi-circular holes is smaller than that of the left lower semi-circular holes; the aggregate box is arranged between the second vertical plates on the front and rear sides and directly below the lower limiting plate.
9. The glue coating detection device for a liquid medicine filter according to claim 8, characterized in that: The left bracket includes a left seat plate; on the upper surface of the left seat plate, symmetric third vertical plates are provided on the front and rear sides; the upper ends of the third vertical plates on the front and rear sides are connected by a fixing plate; the air testing mechanism includes a seventh cylinder mounting seat provided on the left side wall in the middle of the fixing plate; a seventh cylinder matching the seventh cylinder mounting seat is provided on the seventh cylinder mounting seat; a sliding plate is provided at the right end of the piston rod of the seventh cylinder; symmetric fourth slide rails are provided on the front and rear sides in the middle of the upper surface of the fixing plate; a number of fourth sliders matching the fourth slide rails are provided on the left and right sides of the lower surface of the sliding plate; a blowing seat is provided on the upper surface of the right end of the sliding plate; a number of blowing pipes corresponding to the positions of the left lower semi-circular holes are provided on the blowing seat; an eighth cylinder mounting plate is provided on the upper surface of the blowing seat; eighth cylinders are provided on the front and rear sides of the left side wall of the eighth cylinder mounting plate; the piston rods of the eighth cylinders on the front and rear sides both pass through the eighth cylinder mounting plate to the right and are connected by a pressing plate; a number of movable holes matching the blowing pipes are provided on the pressing plate, and the blowing pipes pass through the movable holes; the left side wall of the pressing plate is in contact with the right side wall of the blowing seat.
10. A glue coating detection device for a liquid medicine filter according to claim 9, characterized in that: The blowing seat is composed of a left adjusting block and a right adjusting block located on the right side of the left adjusting block; the right side wall of the left adjusting block is in contact with the left side wall of the right adjusting block; the left adjusting block and the right adjusting block are fixed by a number of uniformly distributed screws; a number of guiding holes coaxial with the blowing pipes are provided on the right adjusting block; guiding sliding sleeves matching the guiding holes are provided in the guiding holes; a number of right adjusting holes coaxial with the guiding holes are provided on the right side wall of the left adjusting block; a number of left adjusting holes communicating with the right adjusting holes are provided on the left side wall of the left adjusting block; the diameter of the left adjusting holes is smaller than that of the right adjusting holes; the blowing pipes pass through the left adjusting holes, right adjusting holes, guiding sliding sleeves, and movable holes in sequence from left to right; a limiting part is provided on the outer wall of the part of the blowing pipe located in the right adjusting hole; a spring sleeved on the blowing pipe is provided between the left side wall of the limiting part and the bottom of the right adjusting hole.