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CN-224218965-U - Grafting knife

CN224218965UCN 224218965 UCN224218965 UCN 224218965UCN-224218965-U

Abstract

A grafting knife belongs to the technical field of gardening tools, and particularly relates to a grafting tool with a disinfection function and a blade adjustable structure. The existing grafting knife has the problems of complex disinfection operation and inconvenient blade extension length adjustment. The utility model is characterized in that a blade mounting groove is formed in the front end of a cutter handle, the rear end of the blade is arranged in the groove in a sliding limiting manner, a disinfectant storage tank is arranged in the cutter handle and is connected to a nozzle at the front end of the cutter handle through a guide pipe, a pressing pump is arranged on the guide pipe, the pressing pump button is pressed to extend out of the upper part of the cutter handle, the nozzle faces to the direction of a cutting edge, a gear assembly comprises a sliding rail, a rack, a gear and a hand wheel, the rotation axis of the hand wheel is perpendicular to the extending direction of the blade mounting groove, and the stroke length of the rack is equal to the adjustable extending length of the blade. The grafting knife can be used for disinfecting and spraying liquid by single-hand operation, can accurately adjust the projecting amount of the blade through the hand wheel, is suitable for grafting operations of plants such as fruit trees, flowers and the like, and improves the incision disinfecting efficiency and the blade adjusting precision.

Inventors

  • YANG XIAOMING
  • YANG JIE
  • WU MEIZHEN

Assignees

  • 内蒙古森洲园林绿化有限公司

Dates

Publication Date
20260512
Application Date
20250522

Claims (10)

  1. 1. A grafting-tool, comprising: the front end of the knife handle is provided with a longitudinally extending blade mounting groove; The rear end of the blade is slidably and limitedly arranged in the blade mounting groove; the disinfectant storage tank is arranged inside the cutter handle, a guide pipe is arranged on the disinfectant storage tank and connected to a nozzle arranged at the front end of the cutter handle, a pressing pump is arranged on the guide pipe, a button of the pressing pump extends out of the upper portion of the cutter handle, and a liquid outlet of the nozzle faces to the direction of the cutting edge of the blade; The gear assembly is arranged inside the cutter handle, the gear assembly comprises a sliding rail arranged inside the cutter handle, a rack which is in sliding fit with the sliding rail, a gear which is meshed with the rack, and a hand wheel which is coaxially arranged with the gear, the upper part of the hand wheel stretches out of the upper part of the cutter handle, the rear end of the blade is fixedly connected with the front end of the rack, the rotation axis of the hand wheel is perpendicular to the extending direction of the blade mounting groove, the blade plane of the blade and the sliding direction of the sliding rail form a parallel relationship, and the stroke length of the rack is equal to the adjustable stretching length of the blade.
  2. 2. The grafting knife according to claim 1, wherein the single pressing liquid amount of the pressing pump is 0.25ml ± 0.05ml.
  3. 3. The grafting knife according to claim 1, wherein the modulus of the gear and the rack is 0.6-0.8mm, the pressure angle is 25-28 degrees, the tooth root of the rack is provided with an arc transition area, the curvature radius of the arc transition area is 0.35-0.45 times of the modulus, the tooth top coefficient of the gear is 0.9-1.0, the tooth root height coefficient is 1.1-1.2, the effective meshing length of the rack is provided with a progressive modification section, the starting point of a tooth profile involute of the progressive modification section is offset by 0.02-0.04mm towards the tooth root direction, the side gap compensation amount of the gear and the rack is 0.04-0.06 times of the modulus, the tooth surface of the rack is plated with a molybdenum disulfide coating with the thickness of 0.005-0.008mm, the accumulated tooth pitch error of the rack is less than 0.03mm/100mm, and the tooth direction band is 0.008-0.012mm.
  4. 4. The grafting knife according to claim 1, wherein 6-8 finger pressing grooves are circumferentially and equidistantly distributed on the rim of the hand wheel, the depth of each finger pressing groove is 1.2-1.8mm, the bottoms of the finger pressing grooves are arc surfaces with the radius of 2-3mm, and a magnetic positioning ring is embedded in the hub of the hand wheel and forms magnetic positioning fit with an iron positioning piece arranged in the knife handle; The axial projection of the finger pressing groove and the rotation direction of the hand wheel form a guide angle of 30-45 degrees, the magnetic induction intensity of the magnetic attraction positioning ring is 80-100mT, the distance between the magnetic attraction positioning ring and the iron positioning piece is 0.5-1.0mm, the magnetic attraction positioning ring generates perceived positioning resistance, the surface of the rim of the hand wheel is coated with an anti-slip silica gel layer, the surface of the anti-slip silica gel layer is provided with hemispherical protrusions with the height of 0.3-0.5mm, and the density of the hemispherical protrusions is 15-20 per cm < 2 >.
  5. 5. The grafting-tool of claim 1, wherein the blade-mounting slot has a slot width that is 0.1mm to 0.3mm greater than the thickness of the blade.
  6. 6. The grafting knife according to claim 1, wherein the cross section of the sliding rail is I-shaped, and a limit stop is arranged at the rear end of the rack and forms contact limit fit with a rear end baffle of the sliding rail.
  7. 7. The grafting knife according to claim 1, wherein the outer surface of the knife handle is provided with a grip anti-slip rubber layer, and the grip anti-slip rubber layer has a thickness of 1.5mm to 2.5mm.
  8. 8. The grafting knife according to claim 1, wherein the volume of the disinfectant tank is 10ml to 15ml, the inner diameter of the guide tube is 1.0mm to 1.5mm, and the diameter of the spray hole of the nozzle is 0.3mm to 0.5mm.
  9. 9. The grafting knife according to claim 1, wherein the bottom of the disinfectant tank is provided with a diversion slope inclined towards the inlet direction of the guide pipe, and the diversion slope forms an inclination angle of 15-25 degrees with the horizontal plane; the top of the disinfectant storage tank is provided with a liquid injection port cover with a sealing ring, and the axis of the liquid injection port cover is vertical to the length direction of the cutter handle; the vertical distance between the lowest end of the diversion inclined plane and the central line of the inlet of the catheter is 2-3mm, a transparent observation window is embedded in the side wall of the disinfectant storage tank, and volume scale marks are arranged on the surface of the transparent observation window.
  10. 10. The grafting knife according to claim 1, wherein the inner cavity of the knife handle is provided with a longitudinal reinforcing rib which extends along the length direction of the knife handle and divides the inner cavity into an upper instrument compartment and a lower liquid storage compartment; The thickness of the longitudinal reinforcing rib is 1.2-1.5 times of the wall thickness of the cutter handle, and the top of the longitudinal reinforcing rib is provided with a damping adhesive tape which is adhered to the bottom surface of the sliding rail; The outer surface of the holding section of the knife handle is provided with a heat radiation grating, and the grating spacing of the heat radiation grating is 0.8-1.2mm and is staggered with the position of the lower liquid storage cabin.

Description

Grafting knife Technical Field The utility model relates to the technical field of gardening tools. More particularly, the present utility model relates to a grafting-tool. Background The grafting technology is widely applied to agricultural production and gardening operation, and the disinfection effect and the cutting precision of a grafting knife of a core tool directly influence the grafting survival rate. The traditional grafting knife needs to be frequently dipped with disinfectant when in use, operation is interrupted, the blade is easy to pollute, meanwhile, the adjustment of the extension length of the blade is mostly manually pushed and pulled or screwed, and the problems of low adjustment precision and time-consuming operation exist. In the prior art, part of grafting tools try to integrate a disinfection function, for example, liquid storage is realized through a built-in liquid storage cavity, but due to unreasonable conduit layout or uncontrollable liquid spraying amount, disinfectant waste or uneven coverage are easily caused. In addition, the blade adjusting mechanism adopts a spring buckle or a threaded rod structure, and has the defects of looseness after abrasion, limited adjusting stroke and the like. Due to sensitivity of grafting operation to blade edge angle and cutting depth, the conventional adjusting mechanism is difficult to meet the requirement of micron-scale precision, and the complex mechanical structure increases maintenance difficulty. How to integrate the disinfection and adjustment functions without affecting the holding hand feeling and ensure the reliability of long-term use is a difficulty in improvement of the prior art. Disclosure of utility model It is an object of the present utility model to solve at least the above problems and to provide at least the advantages to be described later. To achieve these objects and other advantages and in accordance with the purpose of the utility model, there is provided a grafting tool comprising: the front end of the knife handle is provided with a longitudinally extending blade mounting groove; The rear end of the blade is slidably and limitedly arranged in the blade mounting groove; the disinfectant storage tank is arranged inside the cutter handle, a guide pipe is arranged on the disinfectant storage tank and connected to a nozzle arranged at the front end of the cutter handle, a pressing pump is arranged on the guide pipe, a button of the pressing pump extends out of the upper portion of the cutter handle, and a liquid outlet of the nozzle faces to the direction of the cutting edge of the blade; The gear assembly is arranged inside the cutter handle, the gear assembly comprises a sliding rail arranged inside the cutter handle, a rack which is in sliding fit with the sliding rail, a gear which is meshed with the rack, and a hand wheel which is coaxially arranged with the gear, the upper part of the hand wheel stretches out of the upper part of the cutter handle, the rear end of the blade is fixedly connected with the front end of the rack, the rotation axis of the hand wheel is perpendicular to the extending direction of the blade mounting groove, the blade plane of the blade and the sliding direction of the sliding rail form a parallel relationship, and the stroke length of the rack is equal to the adjustable stretching length of the blade. Preferably, the single-press liquid amount of the press pump is 0.25 ml.+ -. 0.05ml. Preferably, the modulus of the gear and the rack is 0.6-0.8mm, the pressure angle is 25-28 degrees, the tooth root of the rack is provided with an arc transition area, the curvature radius of the arc transition area is 0.35-0.45 times of the modulus, the tooth crest height coefficient of the gear is 0.9-1.0, the tooth root height coefficient is 1.1-1.2, the effective meshing length of the rack is provided with a progressive modification section, the starting point of a tooth profile involute of the progressive modification section is offset by 0.02-0.04mm towards the tooth root direction, the side gap compensation amount of the gear and the rack is 0.04-0.06 times of the modulus, the tooth surface of the rack is plated with a molybdenum disulfide coating with the thickness of 0.005-0.008mm, the accumulated tooth pitch error of the rack is less than 0.03mm/100mm, and the tooth direction tolerance zone is 0.008-0.012mm. Preferably, 6-8 finger pressing grooves are circumferentially and equidistantly distributed on the rim of the hand wheel, the depth of each finger pressing groove is 1.2-1.8mm, the bottom of each finger pressing groove is an arc surface with the radius of 2-3mm, and a magnetic positioning ring is embedded in the hub of the hand wheel and forms magnetic positioning fit with an iron positioning plate arranged in the handle; The axial projection of the finger pressing groove and the rotation direction of the hand wheel form a guide angle of 30-45 degrees, the magnetic induction intensity of the