CN110355030B - Spray gun - Google Patents
Spray gun Download PDFInfo
- Publication number
- CN110355030B CN110355030B CN201910750092.8A CN201910750092A CN110355030B CN 110355030 B CN110355030 B CN 110355030B CN 201910750092 A CN201910750092 A CN 201910750092A CN 110355030 B CN110355030 B CN 110355030B
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- China
- Prior art keywords
- resistor
- spray gun
- pull rod
- capacitor
- spray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007921 spray Substances 0.000 title claims abstract description 167
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000010992 reflux Methods 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 45
- 238000007599 discharging Methods 0.000 claims description 21
- 230000005669 field effect Effects 0.000 claims description 18
- 239000003973 paint Substances 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 9
- 238000012806 monitoring device Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 description 23
- 230000000087 stabilizing effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920002396 Polyurea Polymers 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
- B05B12/087—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
- B05B15/555—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids discharged by cleaning nozzles
Landscapes
- Nozzles (AREA)
Abstract
The invention discloses a spray gun. The spray gun includes: the spray gun comprises a spray gun body, a first spray gun and a second spray gun, wherein the spray gun body is provided with a first chamber extending along the length direction; the spray head is detachably connected with one end of the spray gun body, the spray head is provided with a discharge channel extending along the length direction, a material block is arranged on the outer side of the spray head and connected with an external raw material supply device, a collision hole is formed between the material block and the discharge channel, at least one raw material is mixed in the spray head and sprayed out of the discharge channel, and the discharge channel is communicated with the first cavity; the spray gun pull rod is arranged in the discharge channel in a sliding manner; the spray gun power unit is used for driving the spray gun pull rod so that the spray gun pull rod is used for controlling the communication between the discharge channel and the collision hole and pushing out at least part of mixed raw materials from the discharge channel, and the spray gun pull rod is provided with a reflux groove which can be communicated with the reflux hole; the handle is used for controlling the power unit of the spray gun and is detachably connected with the spray gun body.
Description
Technical Field
The invention relates to spraying equipment, in particular to a spraying gun.
Background
In two-component or multi-component polyurea, polyurethane resin, elastomer spray systems, the spray gun is an integral component of the spray system. The spray gun realizes the function of mixing and spraying the raw materials in real time. In the prior art, when the spray gun is used, the mixture of the raw materials can remain in a discharge channel and a nozzle of the spray gun, so that the reuse is affected.
Accordingly, there is a need for a spray gun that at least partially addresses the problems of the prior art.
Disclosure of Invention
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In order to at least partially solve the above-mentioned problems, according to a first aspect of the present invention, there is provided a spray gun comprising:
a spray gun body having a first chamber extending in a length direction;
the spray head is detachably connected with one end of the spray gun body and is provided with
A discharge channel extending along the length direction, wherein a material block is arranged on the outer side of the spray head and is connected with an external raw material supply device, a collision hole is formed between the material block and the discharge channel, at least one raw material is mixed in the spray head and sprayed out of the discharge channel, a backflow hole is further formed between the material block and the discharge channel, the backflow hole is positioned behind the collision hole, one end of the backflow hole is communicated with the material block, the other end of the backflow hole is communicated with the discharge channel, and the discharge channel is communicated with the first chamber;
the spray gun pull rod is arranged in the discharge channel in a sliding manner;
the spray gun power unit is used for driving the spray gun pull rod so that the spray gun pull rod is used for controlling the communication between the discharge channel and the collision hole and pushing at least part of mixed raw materials out of the discharge channel, and a reflux groove capable of being communicated with the reflux hole is formed in the spray gun pull rod;
the handle is used for controlling the spray gun power unit and is detachably connected with the spray gun body.
Preferably, the method further comprises the steps of,
the adjusting device is arranged in the first cavity and connected with the spray gun pull rod and used for adjusting the position of the spray gun pull rod.
Preferably, the spray gun further comprises a pull rod connecting piece, wherein the pull rod connecting piece is positioned between the spray head and the spray gun body and used for connecting the adjusting device and the spray gun pull rod.
Preferably, the adjusting device comprises a power source central shaft consisting of a piston bolt, a long piston shaft and a cylinder outlet shaft which are sequentially connected, and a boss which can be connected with an external adjusting tool is arranged at the end part of the power source central shaft, so that the power source central shaft drives the pull rod connecting piece to move forwards and backwards through rotation.
Preferably, the pull rod connector includes:
the spray gun comprises a pull rod connecting piece body, a spray gun and a spray gun, wherein one end of the pull rod connecting piece body is provided with a screw hole which can be in threaded connection with a piston bolt of the adjusting device, and the other end of the pull rod connecting piece body is provided with a groove which can be matched with a pull rod of the spray gun;
the locating pin, the locating pin perpendicular to the length direction setting of pull rod connecting piece body, locating pin one end with pull rod connecting piece body fixed connection is provided with the guide way that extends along length direction on the first cavity inner wall, the locating pin other end card is in the guide way is used for the restriction the rotation of pull rod connecting piece body.
Preferably, the spray head comprises:
the discharging channel is arranged in the pull rod jacket;
at least one block detachably arranged on the pull rod outer sleeve, and the collision hole arranged on the pull rod outer sleeve;
the spray nozzle is arranged at one end of the discharging channel, which is far away from the spray gun body, and the spray nozzle is detachably arranged on the pull rod jacket.
Preferably, the nozzle further comprises:
the nozzle pressing plate is detachably connected with the pull rod outer sleeve, the nozzle pressing plate is used for pressing the nozzle on the pull rod outer sleeve, a cleaning air passage is arranged on the nozzle pressing plate, and the cleaning air passage is used for cleaning the nozzle.
Preferably, the nozzle comprises a plurality of models, and different spray patterns are realized by replacing the nozzles of different models.
Preferably, the handle comprises at least one of a pneumatic control handle and an electric control handle.
Preferably, a paint control device is disposed in the spray head, and the paint control device includes:
the cylindrical cavity is arranged in the spray head, extends along the horizontal direction and is communicated with the discharging channel, and the diameter of the cylindrical cavity is larger than that of the discharging channel;
the conical cavity is arranged in the spray head, one end with a large caliber of the conical cavity is communicated with the left end of the cylindrical cavity, and one end with a small caliber of the conical cavity is communicated with the left end part of the discharging channel;
the movable column is arranged in the cylindrical cavity, the left end of the movable column is provided with a pointed cone part, the pointed cone part is attached to the inner wall of the conical cavity, a material flowing hole is axially and penetratingly arranged in the movable column, and the movable column can reciprocate left and right in the cylindrical cavity;
the baffle is arranged on the outer wall of one end, far away from the pointed cone, of the movable column, the baffle is perpendicular to the axis of the movable column, one end of the first spring is fixedly connected with the left end of the baffle, and the other end of the first spring is fixedly connected with the left inner wall of the cylindrical cavity;
the second spring, second spring one end is fixed connection with the spliced pole right-hand member, the second spring other end is fixed connection with the movable block, the movable block left end is provided with the shutoff piece.
In this embodiment, a flow rate monitoring device is provided on the shower nozzle, the flow rate monitoring device includes:
the flow sensor is arranged on the inner wall of the discharging channel;
the processor is arranged in the spray head;
the display is arranged on the outer wall of the spray head, the flow sensor is electrically connected with the processor, and the processor is electrically connected with the display.
Preferably, a voltage stabilizing circuit is disposed in the processor, and the voltage stabilizing circuit includes: resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R9, resistor R14, capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, capacitor C6, capacitor C8, inductor L, first field effect transistor VT1, second field effect transistor VT2, first zener diode VZ1, second zener diode VZ2, diode VD1;
one end of the resistor R7 is connected with the output circuit IN, the other end of the resistor R7 is connected with one end of the first field effect tube VT1, two ends of the resistor R7 are connected with the capacitor C5 IN parallel, the other end of the first field effect tube VT1 is connected with one end of the resistor R6, the other end of the resistor R6 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with one end of the resistor R2, two ends of the resistor R1 are connected with the capacitor C1 IN parallel, the other end of the resistor R2 is connected with the cathode of the first zener diode VZ1, two ends of the resistor R2 are connected with the capacitor C2 IN parallel, the anode of the first zener diode VZ1 is connected with one end of the resistor R4, and the other end of the resistor R4 is connected with the positive-phase input end of the operational amplifier U;
one end of the resistor R8 is connected with the output circuit IN, the other end of the resistor R8 is connected with the anode of the second zener diode VZ2, the cathode of the second zener diode VZ2 is connected with one end of the resistor R5, the other end of the resistor R5 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with the inverting input end of the operational amplifier U, and the resistor R3 is connected with the capacitor C3 IN parallel;
the signal output end of the operational amplifier U is connected with one end of a resistor R14, the other end of the resistor R14 is connected with one end of a resistor R9, the other end of the resistor R9 is connected with an output circuit IN, two ends of the resistor R14 are connected with a capacitor C6 IN parallel, one end of a second field effect tube VT2 is connected with the signal output end of the operational amplifier U, the other end of the second field effect tube VT2 is connected with the anode of a diode VD1, the cathode of the diode VD1 is connected with one end of a capacitor C8, the other end of the capacitor C8 is connected with the output circuit IN, and two ends of the capacitor C8 are connected with an inductor L IN parallel.
The technical scheme of the invention has the following advantages: when the gun is closed after the use, the spray gun power unit drives the spray gun pull rod to move forwards, and the spray gun pull rod is positioned at the front position. Residues in the discharge channel can be pushed out by the nozzle in the process of forward movement of the spray gun pull rod, so that the residual residues are prevented from blocking the discharge channel and the spray head, and the next use is prevented from being influenced.
Drawings
FIG. 1 is a schematic view of a spray gun according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a pull rod connection according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a spray head and a pull rod attachment of a spray gun according to an embodiment of the present invention;
FIG. 4 is a schematic view of a spray gun pull rod and pull rod connection for a spray gun according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a spray gun nozzle provided in an embodiment of the present invention;
FIG. 6 is an exploded view of a spray gun nozzle provided in accordance with an embodiment of the present invention;
FIG. 7 is a schematic view of a nozzle platen according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view of a spray gun nozzle provided by an embodiment of the present invention;
FIG. 9 is another cross-sectional view of a spray gun nozzle provided by an embodiment of the present invention;
fig. 10 is a schematic structural view of a paint control device according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a flow monitoring device according to an embodiment of the present invention;
fig. 12 is a schematic diagram of a voltage stabilizing circuit according to an embodiment of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.
In the following description, a detailed structure will be presented for the purpose of thoroughly understanding the present invention. It will be apparent that the invention is not limited to the specific details set forth in the skilled artisan. The preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments in addition to the detailed description, and should not be construed as limited to the embodiments set forth herein.
Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the present invention and not limit the present invention.
Referring to fig. 1 to 4, an embodiment of the present invention discloses a spray gun. The spray gun may include: a spray gun body 10, the spray gun body 10 having a first chamber 101 extending in a length direction; the spray head 20, the spray head 20 is detachably connected with one end of the spray gun body 10, the spray head 20 is provided with a discharging channel 201 extending along the length direction, and at least one raw material is mixed in the spray head 20 and sprayed out of the discharging channel 201; the spray gun pull rod 30 is at least partially arranged in the discharge channel 201 in a sliding way, the spray gun pull rod 30 is used for controlling the communication between the discharge channel 201 and the collision hole 202 and pushing at least part of mixed raw materials out of the discharge channel 201, and a reflux groove 301 capable of being communicated with the reflux hole 208 is arranged on the spray gun pull rod 30; a handle 40, the handle 40 for controlling the spray gun, the handle 40 being detachably connected to the spray gun body 10.
In actual use, referring to fig. 1 and 5, the handle 40 of the spray gun may control the operational state of the spray gun. When the spray coating is prepared, the spray coating gun power unit can drive the spray coating gun pull rod 30 to move and slide from left to right in the discharge channel 201, so that the spray coating gun pull rod 30 is positioned at the rear position, the collision holes 202 on the material block 204 can be communicated with the discharge channel 201, raw materials, such as coating, in the material block 204 are collided and mixed in the discharge channel 201 in the pull rod outer sleeve 203 through the collision holes 202, and then the spray coating operation is realized through the discharge channel 201 and the spray coating operation is realized.
When the gun is closed after the use, the spray gun power unit drives the spray gun pull rod 30 to move forwards, and the spray gun pull rod 30 is positioned at the front position. In the process of forward movement of the spray gun pull rod 30, residues (raw materials) in the discharge channel 201 are pushed out by the nozzle 205, so that the residues left are prevented from blocking the discharge channel 201 and the spray head 20, and the next use is prevented from being influenced.
Optionally, referring to fig. 9, a backflow groove 301 capable of communicating with the backflow hole 208 is further provided on the spray gun pull rod 30, and when the spray gun pull rod 30 is in the front position, part of raw materials can flow back to the backflow hole 208 through the backflow groove 301, so that waste of raw materials is avoided.
Specifically, referring to fig. 5 to 8, the structure of the spray head 20 may include: a pull rod outer sleeve 203, wherein a discharge channel 201 is arranged in the pull rod outer sleeve 203; at least one block 204, the block 204 is detachably disposed on the pull rod outer sleeve 203, the collision hole 202 is disposed on the pull rod outer sleeve 203, the block 204 can be connected with an external raw material supply device, and thus raw materials can be supplied to the spray gun through the collision hole 202; the nozzle 205, the nozzle 205 is detachably provided on the tie rod housing 203.
As shown in fig. 6, the nozzle 205 includes a plurality of types, and the circular spraying and flat spraying functions of different spraying shapes can be realized by changing the nozzles 205 of different types, and the installation angle of the nozzle 205 can be changed and the spraying direction can be adjusted when the flat spraying function is used. The structure can realize quick assembly disassembly and is convenient for cleaning and maintenance.
Further, referring to fig. 6, to achieve a simpler removable mounting of the nozzle 205, the spray head 20 may further include a nozzle platen 206, the nozzle platen 206 being removably coupled to the pull rod housing 203. The nozzle platen 206 may be used to press the nozzle 205 against the pull rod housing 203.
When the gun is stopped, the spray gun pull rod 30 pushes residues in the discharging channel 201 out of the nozzle 205, the residues can be accumulated at the opening of the nozzle 205, and the nozzle 205 can be blocked if the residues react and foam. Thus, the nozzle platen 206 may also be provided with a purge air path 207, and the nozzle platen 206 may be vented to allow the compressed air flow to blow off the residue purged from the gun pull rod 30 and inhibit build up of material at the nozzle 205.
Preferably, referring to fig. 7, a cleaning air path 207 (as shown in the figure) can be further designed on the nozzle pressing plate 206, the outlet of the air path is intersected to the nozzle 205, the cleaning air path 207 is automatically opened when the gun is stopped, the compressed air is blown out from the air outlet to clean residues at the nozzle 205, and the air outlet is stopped by the air source passage when the gun is opened, so that atomization and spray shape at the nozzle 205 are not affected.
Because of minor errors in the machining process, particularly no feedback exists on the individual parts, but the accumulated errors are obvious after assembly, the action of the pull rod 30 of the spray gun may not be in place, and the working effect of the spray gun is affected, for example: the pull rod cannot be pulled in place after being pulled, so that the discharging and collision effects can be influenced; the pull rod is not pushed forward in place, which can affect gun cleaning or tip damage to the nozzle 205. Thus, the spray coating gun may further comprise an adjusting device 50. The adjusting device 50 can effectively eliminate the influence of accumulated errors and ensure the normal operation of the spray gun.
Specifically, referring to fig. 1 and 3, the adjusting device 50 includes a power source center shaft 501 composed of a piston bolt, a long piston shaft, and a cylinder output shaft, which are sequentially connected. The end of the power source center shaft 501 is provided with a boss that can be connected with an external adjusting tool so that the power source center shaft 501 drives the pull rod coupling 60 to move forward and backward by rotation. For example, during use, the outer hexagonal boss 503 at the tail of the central shaft 501 of the power source can be seen by unscrewing the cap plug 502 of the rear end of the spray gun. The power source central shaft 501 formed by piston bolts, long piston shafts, cylinder output shafts and the like can be regarded as a whole after fastening treatment during assembly, and the central shaft can also rotate simultaneously by rotating the outer hexagonal boss 503 at the tail part of the central shaft through a sleeve screwdriver. The front end of the central shaft is in threaded connection with the fine adjustment connecting rod 601, the fine adjustment connecting rod 601 is limited to rotate by the positioning pin 603 capable of sliding back and forth in the groove of the transition connecting piece and has a locking function, the fine adjustment connecting rod 601 can move back and forth when the central shaft rotates, the fine adjustment connecting rod 601 is connected with the spray gun pull rod 30 through the pull rod connecting piece 60, and finally the spray gun pull rod 30 can be adjusted in a back and forth movement mode.
In the present embodiment, referring to fig. 1 and 3 and 4, a tie rod connector 60 is further included to connect the spray gun tie rod 30. A tie rod connector 60 is located between the spray head 20 and the spray gun body 10 for connecting the adjustment device 50 and the spray gun tie rod 30. The pull rod connecting piece 60 specifically may include a pull rod connecting piece 60 body, one end of the pull rod connecting piece 60 body has a screw hole capable of being in threaded connection with the adjusting device 50, and the other end of the pull rod connecting piece 60 body has a groove capable of being matched with the spray gun pull rod 30; the positioning pin 603, the positioning pin 603 is perpendicular to the length direction of the pull rod connecting piece 60 body, and is used for limiting the rotation of the pull rod connecting piece 60 body. The pull rod connecting piece 60 can meet the locking and positioning requirements after the fine adjustment of the spray gun pull rod 30, can effectively prevent the rotation of the spray gun pull rod 30, and can realize action transmission.
For example, the body of the pull rod connecting piece 60 may be a fine tuning connecting rod 601, as shown in fig. 2, one end of the fine tuning connecting rod 601 is in a clamping groove structure, one end of the fine tuning connecting rod is in an internal thread, two narrow cutouts 602 are symmetrically arranged at the internal thread end along the central line direction, and one fastening screw hole is respectively arranged at the upper side and the lower side of the side parallel to the cutouts 602. The locating pin 603 is vertically arranged with the fine adjustment connecting rod 601, can slide in the groove of the transitional connecting piece, limits the rotation of the fine adjustment connecting rod 601, and can drive the spray gun pull rod 30 connected with the front end of the fine adjustment connecting rod 601 to move back and forth when the cylinder output shaft in threaded connection with the fine adjustment connecting rod 601 rotates, so that the position of the spray gun pull rod 30 can be adjusted, and the threaded connection position of the cylinder output shaft and the fine adjustment connecting rod 601 can be locked by the fastening screw 604.
The end face of one end of the fine adjustment connecting rod 601 with the clamping groove is provided with a semicircular groove 605, the end face of the clamping groove end at the tail part of the spray gun pull rod 30 is also provided with a semicircular groove 605, the two grooves are aligned and then are filled with limiting pins 606, and then the two semi-cylindrical pull rod connecting pieces 60 are clamped into the clamping groove to be fixedly connected, namely, the connection of the fine adjustment connecting rod 601 and the spray gun pull rod 30 is realized, meanwhile, the rotation of the spray gun pull rod 30 is limited by the limiting pins 606 and the groove structure, and the fact that the reflux groove 301 on the spray gun pull rod 30 is always aligned with a discharge hole is ensured.
In this embodiment, the handle 40 may include at least one of a pneumatic control handle and an electric control handle. The gun handle 40 can be replaced to change the control mode according to different use requirements. The gun has two control modes, can be realized by changing different control handles 40, and the gun handles 40 are connected with a spray gun body by quick-mounting clamping buckles, so that the replacement operation is simple, quick and convenient. Pneumatic control handle: the pneumatic reversing valve is arranged in the handle, and the gun starting and stopping actions can be realized by triggering the reversing valve through the trigger. Electric control handle: the electric sensor is arranged in the handle, the gun starting and stopping actions can be realized by triggering the electric sensor through the trigger, and the remote operation and the quantitative operation can be realized by the control mode.
In the practical use process, referring to fig. 8, because of the requirements of sealing and positioning, the left and right blocks 204 are easy to be clamped with the pull rod outer sleeve 203 even when the fastening screw is loosened, and are not easy to separate, and the disassembly and maintenance are very inconvenient, so that the auxiliary disassembly screw ejection process holes 207 are designed on the blocks 204, and the blocks 204 can be easily separated from the pull rod outer sleeve 203 by using the ejection screws during the disassembly.
In one embodiment, as shown in fig. 10, the spray head 20 is provided therein with a paint control device, which includes:
a cylindrical cavity 21 disposed in the spray head 20, the cylindrical cavity 21 extending in a horizontal direction and communicating with the discharge passage 201, the diameter of the cylindrical cavity 21 being larger than that of the discharge passage 201;
the conical cavity 22 is arranged in the spray head 20, one end with a large caliber of the conical cavity 22 is communicated with the left end of the cylindrical cavity 21, and one end with a small caliber of the conical cavity 22 is communicated with the left end part of the discharging channel 201;
the moving column 23 is arranged in the cylindrical cavity 21, a pointed cone 24 is arranged at the left end of the moving column 23, the pointed cone 24 is attached to the inner wall of the conical cavity 22, a material flowing hole 25 is formed in the moving column 23 in an axial penetrating manner, and the moving column 23 can reciprocate left and right in the cylindrical cavity 21;
the baffle 26 is arranged on the outer wall of one end, far away from the pointed cone 24, of the movable column 23, the baffle 26 is perpendicular to the axis of the movable column 23, one end of the first spring 27 is fixedly connected with the left end of the baffle 26, and the other end of the first spring 27 is fixedly connected with the left inner wall of the cylindrical cavity 21;
the second spring 28, second spring 28 one end and removal post 23 right-hand member fixed connection, second spring 28 other end and movable block 29 fixed connection, the movable block 29 left end is provided with shutoff piece 31.
The working principle of the technical scheme is as follows: when the spraying gun is used for spraying, when the flow rate of the coating passing through the discharging channel 201 is low, the baffle 26 moves rightwards due to the elastic force of the first spring 27 to drive the moving column 23 to move rightwards, the pointed cone portion 24 is separated from the conical cavity 22, at the moment, the coating can be sprayed out from the left end of the discharging channel 201 through the gaps among the cylindrical cavity 21, the pointed cone portion 24 and the conical cavity 22, and can also be sprayed out from the left end of the discharging channel 201 through the material flowing hole 25; when the flow rate of the coating passing through the discharge channel 201 is high, the baffle 26 compresses the first spring 27 leftwards under the action of water pressure to drive the moving column 23 to move leftwards, so that the pointed cone portion 24 is attached to the conical cavity 22, at the moment, the coating can only pass through the flow hole 25 and then be sprayed out through the left end of the discharge channel 201, the flow rate of the fluid is high, the sectional area of the fluid is also reduced, therefore, the flow rate is also not greatly changed, and the uniform coating amount sprayed in the spraying process is ensured; when the flow rate continues to increase, the pressure of the fluid overcomes the elastic force of the second spring 28, so that the moving block 29 moves leftwards, and the blocking block 31 is blocked on the flow hole 25, so that spraying cannot be performed.
The beneficial effects of the technical scheme are as follows: the paint control device can be used for realizing the spraying operation by adapting to different workers, even if different users operate the handles, the flow rate of the paint is greatly changed, the paint can be sprayed through the nozzle at a uniform and stable flow rate, the stability of the spraying operation process is improved, and the sprayed thickness is more uniform and attractive; in addition, personnel misoperation can be prevented, so that the flow is suddenly increased, the spraying effect is easily affected, the nozzle can be rapidly plugged when the flow is suddenly increased, the waste of paint is avoided, and the cost is saved.
In one example, as shown in fig. 11, the spray head 20 is provided with a flow monitoring device, and the flow monitoring device includes:
a flow sensor 32 arranged on the inner wall of the discharging channel 201;
a processor 33 disposed within the spray head 20;
the display 34 is disposed on the outer wall of the spray head 20, the flow sensor 32 is electrically connected with the processor 33, and the processor 33 is electrically connected with the display 34.
The beneficial effects of the technical scheme are as follows: the flow sensor 32 can detect the flow of paint during use, then transmit the flow to the processor 33, and finally display the flow through the display 34 for the user to know the paint flow value during spraying.
In one example, as shown in fig. 12, the processor 33 is provided with a voltage stabilizing circuit, and the voltage stabilizing circuit includes: resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R9, resistor R14, capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, capacitor C6, capacitor C8, inductor L, first field effect transistor VT1, second field effect transistor VT2, first zener diode VZ1, second zener diode VZ2, diode VD1;
one end of the resistor R7 is connected with the output circuit IN, the other end of the resistor R7 is connected with one end of the first field effect tube VT1, two ends of the resistor R7 are connected with the capacitor C5 IN parallel, the other end of the first field effect tube VT1 is connected with one end of the resistor R6, the other end of the resistor R6 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with one end of the resistor R2, two ends of the resistor R1 are connected with the capacitor C1 IN parallel, the other end of the resistor R2 is connected with the cathode of the first zener diode VZ1, two ends of the resistor R2 are connected with the capacitor C2 IN parallel, the anode of the first zener diode VZ1 is connected with one end of the resistor R4, and the other end of the resistor R4 is connected with the positive-phase input end of the operational amplifier U;
one end of the resistor R8 is connected with the output circuit IN, the other end of the resistor R8 is connected with the anode of the second zener diode VZ2, the cathode of the second zener diode VZ2 is connected with one end of the resistor R5, the other end of the resistor R5 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with the inverting input end of the operational amplifier U, and the resistor R3 is connected with the capacitor C3 IN parallel;
the signal output end of the operational amplifier U is connected with one end of a resistor R14, the other end of the resistor R14 is connected with one end of a resistor R9, the other end of the resistor R9 is connected with an output circuit IN, two ends of the resistor R14 are connected with a capacitor C6 IN parallel, one end of a second field effect tube VT2 is connected with the signal output end of the operational amplifier U, the other end of the second field effect tube VT2 is connected with the anode of a diode VD1, the cathode of the diode VD1 is connected with one end of a capacitor C8, the other end of the capacitor C8 is connected with the output circuit IN, and two ends of the capacitor C8 are connected with an inductor L IN parallel.
The beneficial effects of the technical scheme are as follows: the voltage stabilizing circuit is a linear voltage stabilizing circuit, the purpose of limiting the output voltage IN is achieved, the stability of the voltage IN the processor is guaranteed, and the voltage stabilizing circuit is simple IN structure and convenient to install and debug.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. Terms such as "part," "member" and the like as used herein can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like as used herein may refer to one component being directly attached to another component or to one component being attached to another component through an intermediary. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the embodiments described. In addition, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A spray gun, the spray gun comprising:
a spray gun body having a first chamber extending in a length direction;
the spray head is detachably connected with one end of the spray gun body, the spray head is provided with a discharge channel extending along the length direction, a material block is arranged on the outer side of the spray head and is connected with an external raw material supply device, a collision hole is formed between the material block and the discharge channel, at least one raw material is mixed in the spray head and sprayed out of the discharge channel, a backflow hole is further formed between the material block and the discharge channel, the backflow hole is positioned behind the collision hole, one end of the backflow hole is communicated with the material block, the other end of the backflow hole is communicated with the discharge channel, and the discharge channel is communicated with the first chamber;
the spray gun pull rod is arranged in the discharge channel in a sliding manner;
the spray gun power unit is used for driving the spray gun pull rod so that the spray gun pull rod is used for controlling the communication between the discharge channel and the collision hole and pushing at least part of mixed raw materials out of the discharge channel, and a reflux groove capable of being communicated with the reflux hole is formed in the spray gun pull rod;
the handle is used for controlling the spray gun power unit and is detachably connected with the spray gun body;
the adjusting device is arranged in the first cavity and connected with the spray gun pull rod and used for adjusting the position of the spray gun pull rod;
the pull rod connecting piece is positioned between the spray head and the spray gun body and used for connecting the adjusting device and the spray gun pull rod;
the adjusting device comprises a power source central shaft which is composed of a piston bolt, a long piston shaft and a cylinder outlet shaft which are sequentially connected, and a boss which can be connected with an external adjusting tool is arranged at the end part of the power source central shaft so that the power source central shaft drives a pull rod connecting piece to move forwards and backwards through rotation;
the pull rod connector includes:
the spray gun comprises a pull rod connecting piece body, a spray gun and a spray gun, wherein one end of the pull rod connecting piece body is provided with a screw hole which can be in threaded connection with a piston bolt of the adjusting device, and the other end of the pull rod connecting piece body is provided with a groove which can be matched with a pull rod of the spray gun;
the positioning pin is perpendicular to the length direction of the pull rod connecting piece body, one end of the positioning pin is fixedly connected with the pull rod connecting piece body, a guide groove extending along the length direction is formed in the inner wall of the first cavity, and the other end of the positioning pin is clamped in the guide groove and used for limiting the rotation of the pull rod connecting piece body;
the spray head comprises:
the discharging channel is arranged in the pull rod jacket;
at least one block detachably arranged on the pull rod outer sleeve, and the collision hole arranged on the pull rod outer sleeve;
the spray nozzle is arranged at one end of the discharging channel, which is far away from the spray gun body, and the spray nozzle is detachably arranged on the pull rod jacket.
2. The spray gun of claim 1, wherein the nozzle further comprises:
the nozzle pressing plate is detachably connected with the pull rod outer sleeve, the nozzle pressing plate is used for pressing the nozzle on the pull rod outer sleeve, a cleaning air passage is arranged on the nozzle pressing plate, and the cleaning air passage is used for cleaning the nozzle.
3. A spray gun according to claim 1, wherein a paint control device is provided in the spray head, the paint control device comprising:
the cylindrical cavity is arranged in the spray head, extends along the horizontal direction and is communicated with the discharging channel, and the diameter of the cylindrical cavity is larger than that of the discharging channel;
the conical cavity is arranged in the spray head, one end with a large caliber of the conical cavity is communicated with the left end of the cylindrical cavity, and one end with a small caliber of the conical cavity is communicated with the left end part of the discharging channel;
the movable column is arranged in the cylindrical cavity, the left end of the movable column is provided with a pointed cone part, the pointed cone part is attached to the inner wall of the conical cavity, a material flowing hole is axially and penetratingly arranged in the movable column, and the movable column can reciprocate left and right in the cylindrical cavity;
the baffle is arranged on the outer wall of one end, far away from the pointed cone, of the movable column, the baffle is perpendicular to the axis of the movable column, one end of the first spring is fixedly connected with the left end of the baffle, and the other end of the first spring is fixedly connected with the left inner wall of the cylindrical cavity;
the second spring, second spring one end is fixed connection with the spliced pole right-hand member, the second spring other end is fixed connection with the movable block, the movable block left end is provided with the shutoff piece.
4. A spray gun according to claim 1, wherein the spray head is provided with a flow monitoring device comprising:
the flow sensor is arranged on the inner wall of the discharging channel;
the processor is arranged in the spray head;
the display is arranged on the outer wall of the spray head, the flow sensor is electrically connected with the processor, and the processor is electrically connected with the display.
5. The spray gun of claim 4, wherein a voltage regulator circuit is disposed within the processor, the voltage regulator circuit comprising: resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R9, resistor R14, capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, capacitor C6, capacitor C8, inductor L, first field effect transistor VT1, second field effect transistor VT2, first zener diode VZ1, second zener diode VZ2, diode VD1;
one end of the resistor R7 is connected with the output circuit IN, the other end of the resistor R7 is connected with one end of the first field effect tube VT1, two ends of the resistor R7 are connected with the capacitor C5 IN parallel, the other end of the first field effect tube VT1 is connected with one end of the resistor R6, the other end of the resistor R6 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with one end of the resistor R2, two ends of the resistor R1 are connected with the capacitor C1 IN parallel, the other end of the resistor R2 is connected with the cathode of the first zener diode VZ1, two ends of the resistor R2 are connected with the capacitor C2 IN parallel, the anode of the first zener diode VZ1 is connected with one end of the resistor R4, and the other end of the resistor R4 is connected with the normal phase input end of the operational amplifier U;
one end of the resistor R8 is connected with the output circuit IN, the other end of the resistor R8 is connected with the anode of the second zener diode VZ2, the cathode of the second zener diode VZ2 is connected with one end of the resistor R5, the other end of the resistor R5 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with the inverting input end of the operational amplifier U, and the resistor R3 is connected with the capacitor C3 IN parallel;
the signal output end of the operational amplifier U is connected with one end of a resistor R14, the other end of the resistor R14 is connected with one end of a resistor R9, the other end of the resistor R9 is connected with an output circuit IN, two ends of the resistor R14 are connected with a capacitor C6 IN parallel, one end of a second field effect tube VT2 is connected with the signal output end of the operational amplifier U, the other end of the second field effect tube VT2 is connected with the anode of a diode VD1, the cathode of the diode VD1 is connected with one end of a capacitor C8, the other end of the capacitor C8 is connected with the output circuit IN, and two ends of the capacitor C8 are connected with an inductor L IN parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910750092.8A CN110355030B (en) | 2019-08-14 | 2019-08-14 | Spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910750092.8A CN110355030B (en) | 2019-08-14 | 2019-08-14 | Spray gun |
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| Publication Number | Publication Date |
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| CN110355030A CN110355030A (en) | 2019-10-22 |
| CN110355030B true CN110355030B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910750092.8A Active CN110355030B (en) | 2019-08-14 | 2019-08-14 | Spray gun |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111841922B (en) * | 2020-08-26 | 2024-05-03 | 玉溪市新特科技有限公司 | Pneumatic cold glue spray gun |
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|---|---|---|---|---|
| US4202497A (en) * | 1978-05-05 | 1980-05-13 | Ten Pas Gary C | Spray gun |
| CN1078412A (en) * | 1991-12-04 | 1993-11-17 | 帕金·埃尔默有限公司 | Wire thermic lance and method |
| CN105804377A (en) * | 2016-02-23 | 2016-07-27 | 纬冈工业（宁波）有限公司 | Putty spray gun |
| CN206404946U (en) * | 2016-12-27 | 2017-08-15 | 浙江普莱得电器有限公司 | A kind of spray gun |
| CN208839828U (en) * | 2018-08-21 | 2019-05-10 | 浙江健牌机械科技有限公司 | A kind of sugar-coat spray gun structure |
| CN210815927U (en) * | 2019-08-14 | 2020-06-23 | 京华派克邯郸机械科技有限公司 | Novel spraying gun |
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2019
- 2019-08-14 CN CN201910750092.8A patent/CN110355030B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4202497A (en) * | 1978-05-05 | 1980-05-13 | Ten Pas Gary C | Spray gun |
| CN1078412A (en) * | 1991-12-04 | 1993-11-17 | 帕金·埃尔默有限公司 | Wire thermic lance and method |
| CN105804377A (en) * | 2016-02-23 | 2016-07-27 | 纬冈工业（宁波）有限公司 | Putty spray gun |
| CN206404946U (en) * | 2016-12-27 | 2017-08-15 | 浙江普莱得电器有限公司 | A kind of spray gun |
| CN208839828U (en) * | 2018-08-21 | 2019-05-10 | 浙江健牌机械科技有限公司 | A kind of sugar-coat spray gun structure |
| CN210815927U (en) * | 2019-08-14 | 2020-06-23 | 京华派克邯郸机械科技有限公司 | Novel spraying gun |
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|---|---|
| CN110355030A (en) | 2019-10-22 |
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