Automatic spraying equipment and cleaning process for acupuncture needles

Abstract

An automatic spraying device and cleaning process for acupuncture needles, the device includes a frame, a liquid storage tank, an electric ball valve, a plunger pump, a cleaning bracket and a spraying mechanism; the spraying mechanism includes a nozzle and a movable spraying pipe, the nozzle is arranged on the movable spraying pipe, and the movable spraying pipe is displaced under the drive of a horizontal moving mechanism when working; a cleaning basket is arranged on the cleaning bracket, and the cleaning bracket is displaced under the drive of a bracket lifting mechanism; the electric ball valve includes multiple input ends and an output end, and the output end is connected to the nozzle through the plunger pump; there are multiple liquid storage tanks, each of which is connected to a different input end of the electric ball valve, and each liquid storage tank is provided with a heating tube; and a control unit is also included, and the control unit is electrically connected to and controls the plunger pump, the electric ball valve, the horizontal moving mechanism, the bracket lifting mechanism and the heating tube. The automatic spraying device can realize automatic control of various parameters in the spraying process and provide corresponding cleaning processes, thereby achieving excellent cleaning effects.

Description

Technical Field

[0001] The invention relates to the field of acupuncture needle manufacturing and processing, and in particular to an automatic spraying device and a cleaning process for acupuncture needles. Background Art

[0002] Acupuncture needle is a commonly used medical device, consisting of two parts: a needle body and a needle handle. The front part of the needle body is the needle tip, and the rear end is the needle handle. The needle body and its needle tip have smooth surfaces, and the needle handle is textured so that it can be lifted, inserted, and twisted during use.

[0003] By preparing specific coatings (such as siliconized coatings, diamond-like carbon DLC, parylene coatings, etc.) on the needle tips and needle bodies of acupuncture needles, the pain felt by patients during needle insertion can be reduced. This process is called surface treatment. Because the needle tips of acupuncture needles need to be molded before preparing the coatings, and the molding process is often accompanied by the attachment of fine impurities and dirt such as polishing wax, metal dust, and dust, the acupuncture needles need to be pre-cleaned before preparing the coatings. Otherwise, any fine dirt attached to the surface of the needle tip will cause the coating to fail, significantly reducing its surface lubricity, resulting in the treatment failing to achieve the expected results, the patient's pain aggravated, and even a risk of infection.

[0004] In recent years, the clinical demand for acupuncture needles has increased significantly. The production volume requires that the surface treatment of the needles and the processes in each link must achieve very high efficiency. Therefore, the products have the characteristics of high density and large quantity during the processing. In the current conventional cleaning process, acupuncture needles are placed in a basket-shaped fixture, with an average of 30,000 acupuncture needles placed in each cleaning basket. The high density makes it easy for dirt attached to the surface of the needles to remain in the gaps between the needles, which is not conducive to cleaning.

[0005] In the current conventional cleaning process, an ultrasonic cleaner is usually used in combination with various acids, alkalis, and wax removal agents to clean acupuncture needles. However, only one cleaning agent can be used in a single cleaning process, making it difficult to completely remove fine polishing wax, dust, and other dirt attached to the needle tip, which can easily affect the subsequent coating treatment process.

[0006] There is also a cleaning process in the prior art, which can use a commonly available high-pressure spray gun to manually spray acupuncture needles, so that multiple cleaning agents can be switched in a single cleaning to achieve a better cleaning effect; because conventional acupuncture needles have different thicknesses (diameter 0.1mm to 0.8mm) and lengths (10mm to 150mm), they have different tolerances to water pressure and flow. Different water pressure, flow, temperature, time and other parameters need to be controlled for various acupuncture needles during the spraying process, but the parameters are uncontrollable during manual spraying; During the spraying process, if the spraying is not vertical, the fan-shaped surface of the high-pressure water flow will form an angle with the needle tip, and the side of the needle body will be affected by the unbalanced impact of the high-pressure water gun, resulting in bending by the high-pressure water gun and causing defects. If the distance is too close to the needle tip, the needle tip will be damaged by the high-pressure water flow and cause defects. If the distance is too far, the water mist caused by the high-pressure water gun will cause more dust to be adsorbed onto the surface of the acupuncture needle. If the spray flow is insufficient, the spraying process cannot completely remove the excessive residual agent. At the same time, the selection of cleaning agents and spray parameters in the cleaning process have a decisive influence on the cleaning effect.

[0007] In view of the above problems, it is necessary to provide an automatic spraying device for acupuncture needles to realize automatic control of various parameters in the spraying process and provide corresponding cleaning processes, so as to achieve excellent cleaning effects. Summary of the invention

[0008] The invention provides automatic spraying equipment and a cleaning process for acupuncture needles.

[0009] To achieve the above-mentioned object, the present invention provides an automatic spraying device for acupuncture needles, comprising a frame, a liquid storage tank, an electric ball valve, a plunger pump, a cleaning bracket and a spraying mechanism; the spraying mechanism comprises a nozzle and a movable spraying pipe, the nozzle is arranged on the movable spraying pipe, the spraying direction points downward, and the movable spraying pipe is displaced in a horizontal direction under the drive of a horizontal moving mechanism when working; a cleaning basket is arranged on the cleaning bracket in a working state, and the cleaning bracket is displaced in a vertical direction under the drive of a bracket lifting mechanism; the electric ball valve comprises a plurality of input ends and an output end, the output end is connected to the nozzle through the plunger pump, and the connection relationship between each input end and the output end is switched when the electric ball valve is working; the liquid storage tank is provided with a plurality of liquid storage tanks, and the number thereof is less than the number of the input ends of the electric ball valve, each of the liquid storage tanks is respectively connected to a different input end of the electric ball valve, and a heating pipe is arranged in each of the liquid storage tanks; and a control unit is also included, the control unit is electrically connected to and controls the plunger pump, the electric ball valve, the horizontal moving mechanism, the bracket lifting mechanism and the heating pipe.

[0010] Preferably, the nozzle is an adjustable fan-shaped nozzle, which sprays a fan-shaped water flow downward when in operation, and the fan angle of the fan-shaped water flow can be changed by adjusting the nozzle.

[0011] Furthermore, the fan angle of the fan-shaped water flow is adjustable between 15° and 90°.

[0012] The present invention also provides a cleaning process for acupuncture needles, wherein the spraying method uses an automatic spraying device and comprises the following steps:

[0013] Step 1: Soak the acupuncture needles to be cleaned in high-temperature wax removal liquid;

[0014] Step 2, performing a first spraying step on the acupuncture needles;

[0015] The acupuncture needles are repeatedly and alternately sprayed with a first spray liquid and a second spray liquid by the automatic spray device;

[0016] The first spraying liquid is municipal water or first-grade pure water, with a temperature of 65 to 85 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.0 to 4.5 MPa, and a spraying flow rate of 70 to 120 ml / min; the second spraying liquid is municipal water, with a temperature of 35 to 45 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 1 MPa, and a spraying flow rate of 200 to 350 ml / min;

[0017] Step 3, alkali washing the acupuncture needles;

[0018] Step 4, performing a third spraying step on the acupuncture needles;

[0019] The acupuncture needles are repeatedly and alternately sprayed with a fifth spray liquid and a sixth spray liquid by the automatic spray device;

[0020] The fifth spraying liquid is municipal water or first-class pure water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.5 to 3.5 MPa, and a spraying flow rate of 70 to 100 ml / min; the sixth spraying liquid is municipal water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 250 to 400 ml / min;

[0021] Step 5, rinsing the acupuncture needles with pure water;

[0022] Step 6, performing a fourth spraying step on the acupuncture needles;

[0023] The acupuncture needles are repeatedly and alternately sprayed with a seventh spraying liquid and an eighth spraying liquid by the automatic spraying device;

[0024] The seventh spraying liquid is secondary pure water, the temperature is 45 to 65 degrees Celsius, the single spraying time is 70 to 120 seconds, the spraying pressure is 2.5 to 3.5Mpa, and the spraying flow rate is 70 to 100ml / min; the eighth spraying liquid is secondary pure water, the temperature is 65 to 85 degrees Celsius, the single spraying time is 70 to 120 seconds, the spraying pressure is 0.14 to 2Mpa, and the spraying flow rate is 100 to 150ml / min;

[0025] Step seven, drying the acupuncture needles.

[0026] Preferably, before step 3, the method further comprises the following steps:

[0027] 1. Soaking the acupuncture needles in a medium-temperature wax removal solution;

[0028] 2. performing a second spraying step on the acupuncture needles;

[0029] The acupuncture needles are repeatedly and alternately sprayed with a third spray liquid and a fourth spray liquid by the automatic spray device;

[0030] The third spray liquid is municipal water or first-grade pure water, with a temperature of 55 to 75 degrees Celsius, a single spray time of 30 to 90 seconds, a spray pressure of 2.0 to 4.5 MPa, and a spray flow rate of 70 to 120 ml / min; the fourth spray liquid is municipal water, with a temperature of 35 to 45 degrees Celsius, a single spray time of 30 to 60 seconds, a spray pressure of 0.14 to 1 MPa, and a spray flow rate of 200 to 350 ml / min.

[0031] Preferably, before step 5, the method further comprises the following steps:

[0032] 1. acid-washing the acupuncture needles;

[0033] 2. performing a third spraying step again on the acupuncture needles;

[0034] The acupuncture needles are repeatedly and alternately sprayed with a fifth spray liquid and a sixth spray liquid by the automatic spraying device.

[0035] The present invention also provides a cleaning process for acupuncture needles, wherein the spraying method uses an automatic spraying device and comprises the following steps:

[0036] Step 1: Soak the acupuncture needles to be cleaned in high-temperature wax removal liquid;

[0037] Step 2: performing a first spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a first spraying liquid and a second spraying liquid repeatedly;

[0038] The first spraying liquid is municipal water or first-grade pure water, with a temperature of 65 to 85 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.0 to 4.5 MPa, and a spraying flow rate of 70 to 120 ml / min; the second spraying liquid is municipal water, with a temperature of 35 to 45 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 1 MPa, and a spraying flow rate of 200 to 350 ml / min;

[0039] Step 3, rinsing the acupuncture needles with pure water;

[0040] Step 4: performing a fourth spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a seventh spraying liquid and an eighth spraying liquid repeatedly;

[0041] The seventh spraying liquid is secondary pure water, the temperature is 45 to 65 degrees Celsius, the single spraying time is 70 to 120 seconds, the spraying pressure is 2.5 to 3.5Mpa, and the spraying flow rate is 70 to 100ml / min; the eighth spraying liquid is secondary pure water, the temperature is 65 to 85 degrees Celsius, the single spraying time is 70 to 120 seconds, the spraying pressure is 0.14 to 2Mpa, and the spraying flow rate is 100 to 150ml / min;

[0042] Step 5: drying the acupuncture needles.

[0043] Preferably, after step 2, the method further comprises the following steps:

[0044] 1. Passivating the acupuncture needles;

[0045] 2. performing a fifth spraying step on the acupuncture needles, repeatedly and alternately spraying the acupuncture needles with a ninth spraying liquid and a tenth spraying liquid through the automatic spraying device;

[0046] The ninth spraying liquid is secondary pure water with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.5 to 3.5 MPa, and a spraying flow rate of 70 to 100 ml / min; the tenth spraying liquid is municipal water with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 250 to 400 ml / min.

[0047] Preferably, before step 3, the method further comprises the following steps:

[0048] 1. neutralizing the acupuncture needles;

[0049] 2. performing a sixth spraying step on the acupuncture needles, repeatedly and alternately spraying the acupuncture needles with an eleventh spraying liquid and a twelfth spraying liquid through the automatic spraying device;

[0050] The eleventh spraying liquid is secondary pure water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 60 to 150 seconds, a spraying pressure of 3.5 to 4.5 MPa, and a spraying flow rate of 100 to 145 ml / min; the twelfth spraying liquid is secondary pure water, with a temperature of 50 to 60 degrees Celsius, a single spraying time of 15 to 30 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 100 to 150 ml / min.

[0051] Preferably, in the sixth spraying step, the automatic spraying device is allowed to stand still for 10 to 15 seconds in the middle of alternating switching between the eleventh spraying liquid and the twelfth spraying liquid.

[0052] The present invention also provides a cleaning process for acupuncture needles, wherein the spraying method uses an automatic spraying device and comprises the following steps:

[0053] Step 1: Soak the acupuncture needles to be cleaned in high-temperature wax removal liquid;

[0054] Step 2: performing a first spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a first spraying liquid and a second spraying liquid repeatedly;

[0055] The first spraying liquid is municipal water or first-grade pure water, with a temperature of 65 to 85 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.0 to 4.5 MPa, and a spraying flow rate of 70 to 120 ml / min; the second spraying liquid is municipal water, with a temperature of 35 to 45 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 1 MPa, and a spraying flow rate of 200 to 350 ml / min;

[0056] Step 3, cleaning the acupuncture needles;

[0057] Step 4: performing a third spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a fifth spraying liquid and a sixth spraying liquid repeatedly;

[0058] The fifth spraying liquid is municipal water or first-class pure water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.5 to 3.5 MPa, and a spraying flow rate of 70 to 100 ml / min; the sixth spraying liquid is municipal water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 250 to 400 ml / min;

[0059] Step 5, rinsing the acupuncture needles with pure water;

[0060] Step 6: performing a seventh spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a thirteenth spraying liquid and a fourteenth spraying liquid repeatedly;

[0061] The thirteenth spraying liquid is secondary pure water, the temperature is 45 to 65 degrees Celsius, the single spraying time is 30 to 90 seconds, the spraying pressure is 3.5 to 4.5Mpa, and the spraying flow rate is 100 to 145ml / min; the fourteenth spraying liquid is secondary pure water, the temperature is 50 to 60 degrees Celsius, the single spraying time is 30 to 60 seconds, the spraying pressure is 0.14 to 2Mpa, and the spraying flow rate is 100 to 150ml / min;

[0062] Step seven, drying the acupuncture needles.

[0063] Preferably, after step 6, the following steps are also included:

[0064] 1. performing electrolytic polishing on the acupuncture needles;

[0065] 2. performing an eighth spraying step on the acupuncture needles, repeatedly and alternately spraying the acupuncture needles with a fifteenth spraying liquid and a sixteenth spraying liquid through the automatic spraying device;

[0066] The fifteenth spraying liquid is secondary pure water, the temperature is 50 to 60 degrees Celsius, the single spraying time is 30 to 60 seconds, the spraying pressure is 0.14 to 2Mpa, and the spraying flow rate is 100 to 150ml / min; the sixteenth spraying liquid is secondary pure water, the temperature is 30 to 40 degrees Celsius, and the single spraying time is 20 seconds;

[0067] 3. neutralizing the acupuncture needles;

[0068] 4. performing a sixth spraying step on the acupuncture needles, repeatedly and alternately spraying the acupuncture needles with an eleventh spraying liquid and a twelfth spraying liquid through the automatic spraying device;

[0069] The eleventh spraying liquid is secondary pure water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 60 to 150 seconds, a spraying pressure of 3.5 to 4.5 MPa, and a spraying flow rate of 100 to 145 ml / min; the twelfth spraying liquid is secondary pure water, with a temperature of 50 to 60 degrees Celsius, a single spraying time of 15 to 30 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 100 to 150 ml / min.

[0070] Preferably, before step 7, the method further comprises the following steps:

[0071] 1. Cleaning the acupuncture needles;

[0072] 2. performing the sixth spraying step again on the acupuncture needles, and repeatedly and alternately spraying the acupuncture needles with an eleventh spraying liquid and a twelfth spraying liquid through the automatic spraying device;

[0073] 3. Rinse the acupuncture needles with pure water;

[0074] 4. The seventh spraying step is performed again on the acupuncture needles, and the acupuncture needles are repeatedly and alternately sprayed with a thirteenth spraying liquid and a fourteenth spraying liquid by the automatic spraying device.

[0075] Preferably, in the sixth spraying step, the automatic spraying device is allowed to stand still for 10 to 15 seconds in the middle of alternating switching between the eleventh spraying liquid and the twelfth spraying liquid.

[0076] The beneficial effects of the present invention are as follows: the cleaning process of the present invention can achieve an excellent cleaning effect by switching between a variety of cleaning agents in a single cleaning process and performing multiple targeted spraying; the three cleaning processes provided in the present invention correspond to conventional uncoated or silicone oil-coated acupuncture needles, traditional copper ring handle acupuncture needles, and PVD-coated or CVD-coated acupuncture needles, respectively; in this process, automatic control of various spray parameters can be achieved through automatic spraying equipment, avoiding various uncontrollable phenomena caused by manual operation and saving manpower; only a single device or a small amount of equipment is needed to meet the spraying requirements of the entire surface treatment chain process, and is suitable for all specifications of acupuncture needles. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Attached Figure 1 A front view of an embodiment of the present invention;

[0078] Attached Figure 2 A side view of an embodiment of the present invention;

[0079] Attached Figure 3 A top view of an embodiment of the present invention;

[0080] Attached Figure 4 This is a flow chart of the first cleaning process of the present invention;

[0081] Attached Figure 5 is a flow chart of the second cleaning process of the present invention;

[0082] Attached Figure 6 This is a flow chart of the third cleaning process of the present invention.

[0083] In the above figures: 1. frame; 2. plunger pump; 3. cleaning bracket; 4. bracket lifting mechanism; 5. nozzle; 6. movable spray pipe; 7. horizontal moving mechanism; 8. cleaning basket. DETAILED DESCRIPTION

[0084] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0085] The present invention will be clearly described below with drawings and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0086] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0087] The terms “first”, “second”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0088] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0089] The terms “include,” “including,” “have,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0090] The terms used in this document generally have the ordinary meaning of each term used in this field, in the context of the case and in the specific context, unless otherwise noted. Certain terms used to describe the present invention will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in the description of the present invention.

[0091] The words "front", "back", "up", "down", "left", "right", etc. used in this article are all directional terms. In this case, they are only used to illustrate the positional relationship between the various structures, and are not used to limit the scope of protection of this case and the specific direction during actual implementation.

[0092] like Figures 1 to 6 As shown, an automatic spraying device and a cleaning process for acupuncture needles are provided.

[0093] An automatic spraying device for acupuncture needles comprises a frame 1, a liquid storage tank, an electric ball valve, a plunger pump 2, a cleaning bracket 3 and a spraying mechanism.

[0094] In this embodiment, the liquid storage tank and the electric ball valve are arranged outside the frame 1 , and the plunger pump 2 , the cleaning bracket 3 and the spray mechanism are arranged on the frame 1 .

[0095] The spray mechanism includes a nozzle 5 and a movable spray pipe 6. The nozzle 5 is arranged on the movable spray pipe 6, and the spray direction points downward. When the movable spray pipe 6 is working, it is driven by a horizontal moving mechanism 7 to move in a horizontal direction. The horizontal direction is perpendicular to the extension direction of the movable spray pipe 6. As a result, the linear spray area formed by the spraying of the movable spray pipe 6 when working is expanded to cover a rectangular area as the movable spray pipe 6 moves, so that the entire cleaning basket 8 can be cleaned and sprayed.

[0096] In the working state, the cleaning basket 8 is arranged on the cleaning bracket 3, and the cleaning bracket 3 is displaced in the vertical direction under the drive of a bracket lifting mechanism 4, so that it can adapt to acupuncture needles of different lengths by adjusting up and down; the cleaning bracket 3 is hollowed out to allow smooth water flow from the bottom. If the chemical agents on the product cannot flow away in time during the spraying process, it will hinder the fresh chemical agents from continuing to clean the workpiece, and it is not easy to dry in the subsequent drying step, so it is necessary to ensure that the agents flowing onto the workpiece can flow away naturally.

[0097] Among them, the above-mentioned horizontal moving mechanism 7 adopts a servo motor to drive the nozzle 5 and the movable spray pipe 6 to move horizontally above the cleaning bracket 3; the above-mentioned bracket lifting mechanism 4 can adopt a servo motor to drive the hinge and gears to realize the up and down movement of the cleaning bracket 3, or a hand-cranked winch can be used to drive the gears to realize the up and down movement of the cleaning bracket 3; its specific structure and working principle are all existing technologies, which are well known to those skilled in the art, and are not the invention point of this case, so they will not be repeated here.

[0098] The electric ball valve includes multiple input ends and an output end, and the output end is connected to the nozzle 5 through the plunger pump 2. When the electric ball valve is working, the connection relationship between each input end and the output end is switched, and the input end connected to the output end can be selected; there are multiple liquid storage tanks, and the number of them is less than the number of input ends of the electric ball valve, and they are respectively filled with different liquids. Each of the liquid storage tanks is connected to a different input end of the electric ball valve, so that through the control of the electric ball valve, the liquid in any liquid storage tank can be selectively switched to be output at the output end, and finally sprayed out through the nozzle 5.

[0099] In this embodiment, there are four nozzles 5 in total, and the one output end is connected to the four nozzles 5 at the same time, so that the four nozzles 5 spray the same liquid at the same time during operation.

[0100] Among them, the specific structure and working principle of the electric ball valve are existing technologies, which are well known to those skilled in the art, and are not the invention of this case, so they will not be elaborated here.

[0101] In addition, each of the liquid storage tanks is provided with a heating tube and a temperature monitoring module to heat and control the temperature of the liquid inside the liquid storage tank.

[0102] It also includes a control unit, which is electrically connected to and controls the plunger pump 2, the electric ball valve, the horizontal moving mechanism 7, the bracket lifting mechanism 4, the heating tube and the temperature monitoring module, wherein the plunger pump 2 controls the water pressure and the spraying time of the nozzle 5 during spraying, and further controls the spraying flow rate, the electric ball valve is used to select the type of liquid sprayed by the nozzle 5, and the heating tube and the temperature monitoring module are used to control the temperature of the sprayed liquid.

[0103] In this embodiment, the nozzle 5 is an adjustable fan-shaped nozzle 5. When the nozzle 5 is working, it sprays a fan-shaped water flow downward. The fan angle of the fan-shaped water flow can be changed by adjusting the nozzle 5. When the fan angle is small, the water flow is concentrated, and the water flow pressure loss is small, so stubbornly attached dirt can be effectively removed. When the fan angle is large, the spray range is wide, and all products are sprayed more evenly. By adjusting the nozzle 5, it can be adapted according to specific circumstances. Specifically, the fan angle of the fan-shaped water flow is adjustable between 15° and 90°, and the fan angle refers to the angle between the two edges of the fan-shaped water flow.

[0104] Among them, the working principle of the adjustable fan-shaped nozzle 5 is to control the structural shape of the water outlet by rotating the nozzle 5, thereby changing the shape of the water outlet and the water mist; its specific structure is prior art and is well known to technicians in this field, and it is not the invention point of this case, so it will not be repeated here.

[0105] In this embodiment, the adjustable mechanism of the nozzle 5 can be manual (winch hand adjustment) or automatic controlled by a driver.

[0106] The platform's frame shape and size can be changed to suit different surface treatments.

[0107] A movable conveyor belt can be added to the washing basket 8 for automatic loading and unloading, thereby reducing the workload of manual pushing and unloading.

[0108] The liquid storage tank is made of 316 stainless steel, and its structure is equipped with multiple heating tube installation holes, which can be closed with a knob-type cover, so that the heating tube can be freely configured to adapt to different power and heating method requirements. It is suitable for two heating methods: electric heating tube and steam heating.

[0109] The plunger pump 2 is used for multi-stage adjustable pressure and can provide multi-stage adjustable pressure. Different from a manual spray gun or other spray equipment, although both use high-pressure torrents to remove dirt, this equipment is used for smaller acupuncture needles (medical products) and is highly sensitive to pressure. Too little pressure will result in the inability to clean the dirt, and too much pressure will cause product damage and large-scale scrapping. Therefore, this equipment requires precision frequency conversion to achieve precise pressure control.

[0110] The pipelines between the liquid storage tank, the plunger pump 2, the electric ball valve and the nozzle 5 are integrally welded test pipelines to avoid pressure loss and reduce unnecessary pipeline loss.

[0111] In this embodiment, each input end of the electric ball valve is provided with a pre-filter to ensure that the liquid flowing through the ball valve does not bring impurities and cause damage to the ball valve.

[0112] In summary, in this embodiment, the fan shape of the spray water is adjustable, and the nozzle 5 can be adjusted to adjust the shape of the sprayed water flow to adapt to fixtures of different sizes;

[0113] The spray water temperature can be adjusted, hot and cold water can be switched, etc. to deal with different dirt residues;

[0114] The distance between the nozzle 5 and the cleaning basket 8 is adjustable to accommodate acupuncture needles of different lengths;

[0115] The pressure of the plunger pump 2 is adjustable to accommodate acupuncture needles of different thicknesses;

[0116] The electric ball valve can be used to switch between different spraying liquids such as municipal water and pure water to adapt to the different requirements of spraying in different links / stages;

[0117] The spraying time is adjustable and can be adapted to different surface treatment links (wax removal, cleaning, coating pre-cleaning, electrolytic polishing cleaning, surface neutralization cleaning, etc.) and process requirements;

[0118] The reciprocating frequency of the nozzle 5 is adjustable, and the spraying is even and multiple times to ensure that the product is completely clean.

[0119] Through this automatic spraying equipment, automatic control of various parameters in the spraying process is achieved, thereby avoiding various uncontrollable phenomena caused by manual operation and saving manpower; only a single device or a small amount of equipment is needed to meet the spraying needs of the entire surface treatment chain process, and it is suitable for all specifications of acupuncture needles.

[0120] By applying the automatic spraying equipment in this embodiment, three cleaning processes for acupuncture needles are provided.

[0121] The first cleaning process is shown in the figure and includes the following steps:

[0122] Step 1: Soak the acupuncture needles to be cleaned in high-temperature wax removal liquid to remove wax from the acupuncture needles. Since the acupuncture needles need to be polished with polishing wax after grinding, they need to be dewaxed.

[0123] The wax removal liquid can be conventional wax removal liquid available on the market. During the wax removal process, the wax removal liquid is heated to 65 to 80 degrees Celsius, and the cleaning process lasts for 20 to 30 minutes.

[0124] Step 2: performing a first spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a first spraying liquid and a second spraying liquid repeatedly.

[0125] The first spray liquid is municipal water or first-grade pure water, with a temperature of 65 to 85 degrees Celsius, a single spray time of 30 to 90 seconds, a spray pressure of 2.0 to 4.5 MPa, and a spray flow rate of 70 to 120 ml / min; the second spray liquid is municipal water, with a temperature of 35 to 45 degrees Celsius, a single spray time of 30 to 60 seconds, a spray pressure of 0.14 to 1 MPa, and a spray flow rate of 200 to 350 ml / min.

[0126] The single spraying time refers to the time for continuously spraying the liquid. After reaching this time, the liquid is switched to another liquid, and the cycle repeats. The single spraying time mentioned in this article has this meaning.

[0127] This step is used to remove the original dirt on the acupuncture needles and the wax removal liquid attached in step one, and perform preliminary cleaning without the need to use high-grade purified water.

[0128] In this process, two liquids are sprayed alternately, hot and cold, so that the polishing wax originally melted in the cleaning liquid in the wax removal process can be quickly cooled, solidified and cracked at high temperature, thereby enhancing the wax removal effect.

[0129] In this process, the large-flow municipal water spray can remove the residue and dirt in the fixture at the farthest end from the nozzle (the gap of the needle handle); the large-flow municipal water can quickly dilute the wax removal liquid, minimize the residual solution, reduce the impact of the residue on the surface treatment liquid in the next process, improve the treatment efficiency, and save the cost of the solution.

[0130] In this process, the two spray liquids use different spray pressures, which can make the liquid flow rate and flow rate flowing through the needle surface per unit time different, and more widely remove dirt with different adhesion; the wax removal liquid is mostly organic dirt. As the cleaning time increases, the content of organic dirt dissolved in the cleaning liquid gradually increases, and the viscosity of the cleaning liquid will gradually increase. The original polishing wax is a solid covering film, which is later transformed into a fluid, semi-solid dirt film that adheres to the surface of the acupuncture needle together with the cleaning liquid. The high and low pressure staggered spraying can effectively separate the dirt from the metal surface.

[0131] The main components of polishing wax are fatty acids, stearic acid, and other oil components. In order to increase the polishing effect, some polishing waxes add chromium oxide, aluminum oxide and other components. The particle size is above 200 mesh. This dirt cannot be dissolved in water. This part of the dirt is easy to adhere to the needle tip. Spraying at the needle tip can effectively remove the insoluble matter.

[0132] Step 3: Soak the acupuncture needles in a medium-temperature wax removal liquid to remove wax from the acupuncture needles.

[0133] The wax removal liquid can also be conventional wax removal liquid available on the market. During the wax removal process, the wax removal liquid is heated to 65 to 75 degrees Celsius, and the cleaning process lasts for 20 to 30 minutes.

[0134] Through two rounds of dewaxing processes at high temperature and medium temperature, a good dewaxing effect can be achieved on the acupuncture needles, which can avoid the phenomenon of polishing wax residue on the acupuncture needles to a great extent.

[0135] Step 4: performing a second spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a third spraying liquid and a fourth spraying liquid repeatedly.

[0136] The third spray liquid is municipal water or first-grade pure water, with a temperature of 55 to 75 degrees Celsius, a single spray time of 30 to 90 seconds, a spray pressure of 2.0 to 4.5 MPa, and a spray flow rate of 70 to 120 ml / min; the fourth spray liquid is municipal water, with a temperature of 35 to 45 degrees Celsius, a single spray time of 30 to 60 seconds, a spray pressure of 0.14 to 1 MPa, and a spray flow rate of 200 to 350 ml / min.

[0137] This step is similar to step 2 and is used to remove the original dirt on the acupuncture needles and the wax removal liquid attached in the previous step.

[0138] Step 5: alkaline washing is performed on the acupuncture needles, the purpose of which is to use an alkaline cleaning agent to wash the acupuncture needles.

[0139] The cleaning agent may be a sodium hydroxide solution with a concentration of 5-15%. During the cleaning process, the cleaning agent is heated to a temperature of 55 to 65 degrees Celsius, and the cleaning process lasts for 10 to 25 minutes.

[0140] Step 6: Perform a third spraying step on the acupuncture needles, and repeatedly and alternately spray the acupuncture needles with a fifth spraying liquid and a sixth spraying liquid through the automatic spraying device.

[0141] The fifth spraying liquid is municipal water or first-grade pure water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.5 to 3.5 MPa, and a spraying flow rate of 70 to 100 ml / min; the sixth spraying liquid is municipal water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 250 to 400 ml / min.

[0142] This step is used for wax removal and subsequent use of alkaline liquid. Spraying during switching can quickly dilute the wax removal liquid, minimize the residual liquid, reduce the impact of the residual on the surface treatment liquid in the next step, improve the processing efficiency, and save the liquid cost.

[0143] Hot water spraying is used in this step to accelerate the molecular movement and cooperate with the surface treatment liquid in the next step, so that the spraying process will not cool the needle, ensuring the cleaning efficiency.

[0144] Step seven, pickling the acupuncture needles, the purpose of which is to use an acidic cleaning agent to wash the acupuncture needles. The design of acid washing after alkaline washing can improve the washing effect.

[0145] The cleaning agent may be a tartaric acid solution with a concentration of 5-15%. During the cleaning process, the cleaning agent is heated to a temperature of 50 to 60 degrees Celsius, and the cleaning process lasts for 10 to 25 minutes.

[0146] Step 8: Perform the third spraying step again on the acupuncture needles, and repeatedly and alternately spray the acupuncture needles with a fifth spraying liquid and a sixth spraying liquid through the automatic spraying device.

[0147] This step is similar to step six. Acidic liquid is used for subsequent wax removal. Spraying during switching can quickly dilute the wax removal liquid, minimize the residual liquid, reduce the impact of the residual on the surface treatment liquid in the next step, improve treatment efficiency, and save liquid cost.

[0148] Hot water spraying is used in this step to accelerate the molecular movement and cooperate with the surface treatment liquid in the next step, so that the spraying process will not cool the needle, ensuring the cleaning efficiency.

[0149] Step nine: Rinse the acupuncture needles with pure water to further remove the stains and detergents remaining on the surfaces of the acupuncture needles.

[0150] Step 10: performing a fourth spraying step on the acupuncture needles, and repeatedly and alternately spraying the acupuncture needles with a seventh spraying liquid and an eighth spraying liquid through the automatic spraying device.

[0151] The seventh spraying liquid is secondary pure water with a temperature of 45 to 65 degrees Celsius, a single spraying time of 70 to 120 seconds, a spraying pressure of 2.5 to 3.5 MPa, and a spraying flow rate of 70 to 100 ml / min; the eighth spraying liquid is secondary pure water with a temperature of 65 to 85 degrees Celsius, a single spraying time of 70 to 120 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 100 to 150 ml / min.

[0152] In this process, pure water high-pressure spraying is used to ensure that the surface is free of dirt. At the same time, high-temperature spraying can increase the temperature of the stainless steel acupuncture needles, saving heating time, energy and time for the next drying step.

[0153] Step 11: Dry the acupuncture needles to complete the first cleaning process.

[0154] The first cleaning process is suitable for the surface treatment and cleaning of conventional uncoated or silicone oil coated acupuncture needles.

[0155] In the first cleaning process, five washing steps are performed, namely, high-temperature dewaxing, medium-temperature dewaxing, alkali washing, acid washing, and pure water rinsing, and a corresponding spraying step is set after each washing step; the spraying step can remove the melted wax and impurities attached to the acupuncture needles, take away most of the oil and dirt, ensure that each cleaning step is not interfered with by the residual medicine in the previous step, causing the cleaning effect to deteriorate, remove the residual chemicals on the needle body, ensure the cleanliness of the needle body during drying, and prevent dirt from remaining, which can greatly improve the product yield on more surface coatings (surface treatments such as DLC coating, parylene coating, silicone oil coating).

[0156] The second cleaning process is shown in the figure and includes the following steps:

[0157] Step 1: Soak the acupuncture needles to be cleaned in high-temperature wax removal liquid.

[0158] Step 2: performing a first spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a first spraying liquid and a second spraying liquid repeatedly.

[0159] The first spray liquid is municipal water or first-grade pure water, with a temperature of 65 to 85 degrees Celsius, a single spray time of 30 to 90 seconds, a spray pressure of 2.0 to 4.5 MPa, and a spray flow rate of 70 to 120 ml / min; the second spray liquid is municipal water, with a temperature of 35 to 45 degrees Celsius, a single spray time of 30 to 60 seconds, a spray pressure of 0.14 to 1 MPa, and a spray flow rate of 200 to 350 ml / min.

[0160] Step three: passivating the acupuncture needles.

[0161] Among them, passivation is to treat the surface of stainless steel with a certain solution to form a corrosion-resistant passivation film on the surface of the stainless steel, dissolve metal impurities such as iron on the surface, and improve corrosion resistance.

[0162] The passivation treatment process in this link can be specifically carried out in sequence: concentrated acid pickling, rinsing, dilute acid immersion, water mist spraying, passivation, spraying or rinsing; among them, concentrated nitric acid, concentrated sulfuric acid or concentrated hydrochloric acid with a pH value of 1 can be used for concentrated acid pickling; in dilute acid immersion, a sulfuric acid pool with a pH value of 2 is used for immersion for 20 to 40 seconds, and the liquid level should submerge the acupuncture needle. This step is to ensure that the surface of the acupuncture needle handle is not oxidized after pickling, which is convenient for subsequent passivation.

[0163] The water mist spray before passivation uses liquid A and liquid B to spray repeatedly and alternately, where liquid A is municipal water, with a temperature of 65 to 85 degrees Celsius, a single spray time of 10 to 20 seconds, a spray pressure of 0.15 to 1Mpa, and a spray flow rate of 70 to 90ml / min; liquid B is pure water mist, with a temperature of 65 to 85 degrees Celsius, a single spray time of 20 to 90 seconds, a spray pressure of 0.05 to 0.14Mpa, and a spray flow rate of 100 to 250ml / min; Among them, high-temperature spraying is used to prepare and preheat the high-temperature passivation liquid; since the passivation environment is often accompanied by high-temperature acid mist, the acid mist in the air may cause the needle handle to be oxidized and blackened by the acidic liquid, so spraying water mist can ensure that the product is fully in contact and moist with water, and will not come into contact with the acid in the air. The water mist can also ensure that the entire product will not carry excessive moisture, avoiding the concentration of the passivation liquid becoming lower and lower under long-term use (too much water to dilute), resulting in poor effect.

[0164] During the passivation process, the sample is immersed in the passivation solution, which contains 10-20% benzotriazole at a temperature of 60-80 degrees Celsius and a soaking time of 30s-90s.

[0165] Step 4: performing a fifth spraying step on the acupuncture needles, repeatedly and alternately spraying the acupuncture needles with a ninth spraying liquid and a tenth spraying liquid through the automatic spraying device.

[0166] The ninth spraying liquid is secondary pure water with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.5 to 3.5 MPa, and a spraying flow rate of 70 to 100 ml / min; the tenth spraying liquid is municipal water with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 250 to 400 ml / min.

[0167] In this process, if the spraying time is insufficient, it will cause excessive uneven corrosion to the acupuncture needles, resulting in damage to the product surface. In the long run, it will affect the uniformity of the surface oxide layer and the antioxidant quality of the acupuncture needles, and ultimately lead to premature aging of the product and blackening of the handle.

[0168] Step 5: neutralize the acupuncture needles; since some acidic liquid may remain on the acupuncture needles after the passivation process in step 3, the pH value of the acupuncture needles is neutralized in this step. The specific neutralization method can be soaking in a weak alkaline liquid.

[0169] Step six, performing a sixth spraying step on the acupuncture needles, repeatedly and alternately spraying the acupuncture needles with an eleventh spraying liquid and a twelfth spraying liquid through the automatic spraying device.

[0170] The eleventh spraying liquid is secondary pure water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 60 to 150 seconds, a spraying pressure of 3.5 to 4.5 MPa, and a spraying flow rate of 100 to 145 ml / min; the twelfth spraying liquid is secondary pure water, with a temperature of 50 to 60 degrees Celsius, a single spraying time of 15 to 30 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 100 to 150 ml / min.

[0171] In this step, the spraying needs to increase the back-and-forth speed of the nozzle 5 to cope with the surface tension of the liquid remaining in the gap of the needle handle. Moving the nozzle 5 back and forth can form different micro-angles, and different surface flow rates cause different boundary conditions of the residual liquid of the medicine, making it easier to remove the residual liquid.

[0172] In this step, the automatic spraying device is left to stand for 10 to 15 seconds in the middle of the alternating switching between the eleventh spraying liquid and the twelfth spraying liquid, so that the liquid remaining on the surface of the product is lost due to gravity.

[0173] Step seven: rinse the acupuncture needles with pure water.

[0174] Step 8: (Performing a fourth spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a seventh spraying liquid and an eighth spraying liquid.

[0175] The seventh spraying liquid is secondary pure water with a temperature of 45 to 65 degrees Celsius, a single spraying time of 70 to 120 seconds, a spraying pressure of 2.5 to 3.5 MPa, and a spraying flow rate of 70 to 100 ml / min; the eighth spraying liquid is secondary pure water with a temperature of 65 to 85 degrees Celsius, a single spraying time of 70 to 120 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 100 to 150 ml / min.

[0176] Step nine, drying the acupuncture needles.

[0177] The second cleaning process is suitable for acupuncture needles with traditional copper ring handles. Passivation can prevent the needle handles from turning black and rusting.

[0178] The third cleaning process is shown in the figure and includes the following steps:

[0179] Step 1: Soak the acupuncture needles to be cleaned in high-temperature wax removal liquid to remove wax from the acupuncture needles.

[0180] Step 2: performing a first spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a first spraying liquid and a second spraying liquid repeatedly.

[0181] The first spray liquid is municipal water or first-grade pure water, with a temperature of 65 to 85 degrees Celsius, a single spray time of 30 to 90 seconds, a spray pressure of 2.0 to 4.5 MPa, and a spray flow rate of 70 to 120 ml / min; the second spray liquid is municipal water, with a temperature of 35 to 45 degrees Celsius, a single spray time of 30 to 60 seconds, a spray pressure of 0.14 to 1 MPa, and a spray flow rate of 200 to 350 ml / min.

[0182] This step is the same as step 2 in the first cleaning process.

[0183] Step three: cleaning the acupuncture needles. In this step, an alkaline, acidic or neutral cleaning agent may be used.

[0184] Step 4: performing a third spraying step on the acupuncture needles, and repeatedly and alternately spraying the acupuncture needles with a fifth spraying liquid and a sixth spraying liquid through the automatic spraying device.

[0185] The fifth spraying liquid is municipal water or first-grade pure water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.5 to 3.5 MPa, and a spraying flow rate of 70 to 100 ml / min; the sixth spraying liquid is municipal water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 250 to 400 ml / min;.

[0186] This step is the same as step six in the first cleaning process.

[0187] Step 5: Rinse the acupuncture needles with pure water.

[0188] Step 6: Perform the seventh spraying step on the acupuncture needles, and repeatedly and alternately spray the acupuncture needles with a thirteenth spraying liquid and a fourteenth spraying liquid through the automatic spraying device.

[0189] The thirteenth spraying liquid is secondary pure water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 3.5 to 4.5 MPa, and a spraying flow rate of 100 to 145 ml / min; the fourteenth spraying liquid is secondary pure water, with a temperature of 50 to 60 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 100 to 150 ml / min.

[0190] For electrolytic polishing, an extremely thin solid film will appear on the surface of the polished part, which is conducive to producing a glossy and lubricating effect. This solid film is mainly composed of oxides, but it is not like the thick oxide film generally generated by air oxides. It is very thin and has uniform thickness, so that when the metal surface is dissolved, the incomplete crystal grains are dissolved first, removing the microscopic unevenness of the polished surface, making the polished surface very smooth. If ultrasonic cleaning is used instead of spraying, impurities and dust will remain, resulting in protrusions and burrs on the oxide layer of the electrolytic polishing surface. Since the tip of the acupuncture needle is small and sharp, the surface lubrication requirements are very high. The spraying process in this link can ensure the smooth surface of the electrolytic polishing needle tip and improve the puncture force.

[0191] Step seven: electrolytically polishing the acupuncture needles.

[0192] The process principle of electrolytic polishing is to use the workpiece to be polished as the anode and the insoluble metal as the cathode. The positive and negative electrodes are immersed in the polishing tank at the same time. After passing direct current, selective anode dissolution occurs, so that the anode surface reaches a specific brightness. The steps of electrolytic polishing are: surface treatment (including pickling, cleaning, etc.), electrolytic polishing, pickling, and final cleaning.

[0193] Step eight, performing the eighth spraying step on the acupuncture needles, repeatedly and alternately spraying the acupuncture needles with a fifteenth spraying liquid and a sixteenth spraying liquid through the automatic spraying device.

[0194] The fifteenth spraying liquid is secondary pure water with a temperature of 50 to 60 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 2Mpa, and a spraying flow rate of 100 to 150ml / min; the sixteenth spraying liquid is secondary pure water with a temperature of 30 to 40 degrees Celsius, a single spraying time of 20 seconds, and water mist spraying is adopted.

[0195] The key point of this spraying step is to avoid secondary contamination of the product surface by the environment after electrolytic polishing and before neutralization. A large flow rate spray is used to remove the residual electrolytic polishing liquid, and the water mist spray prevents the metal dust and other dirt that may be in the environment from adhering again.

[0196] Step nine: neutralizing the acupuncture needles.

[0197] Step 10: performing the sixth spraying step on the acupuncture needles, and repeatedly and alternately spraying the acupuncture needles with an eleventh spraying liquid and a twelfth spraying liquid through the automatic spraying device.

[0198] The eleventh spraying liquid is secondary pure water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 60 to 150 seconds, a spraying pressure of 3.5 to 4.5 MPa, and a spraying flow rate of 100 to 145 ml / min; the twelfth spraying liquid is secondary pure water, with a temperature of 50 to 60 degrees Celsius, a single spraying time of 15 to 30 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 100 to 150 ml / min.

[0199] In this step, the spraying needs to increase the back-and-forth speed of the nozzle 5 to cope with the surface tension of the liquid remaining in the gap of the needle handle. Moving the nozzle 5 back and forth can form different micro-angles, and different surface flow rates cause different boundary conditions of the residual liquid of the medicine, making it easier to remove the residual liquid.

[0200] In this step, the automatic spraying device is left to stand for 10 to 15 seconds in the middle of the alternating switching between the eleventh spraying liquid and the twelfth spraying liquid, so that the liquid remaining on the surface of the product is lost due to gravity.

[0201] Step 11: Clean the acupuncture needles. In this step, an alkaline, acidic or neutral cleaning agent can be used.

[0202] Step 12: performing the sixth spraying step again on the acupuncture needles, and repeatedly and alternately spraying the acupuncture needles with an eleventh spraying liquid and a twelfth spraying liquid through the automatic spraying device.

[0203] Step 13: Rinse the acupuncture needles with pure water.

[0204] Step 14: performing the seventh spraying step again on the acupuncture needles, and repeatedly and alternately spraying the acupuncture needles with a thirteenth spraying liquid and a fourteenth spraying liquid through the automatic spraying device.

[0205] Spraying is very effective for cleaning. It can remove most of the oil and chemicals on the workpiece, especially for holes and dense gaps. Acupuncture needles are densely arranged in the fixture, and the gaps are prone to dirt accumulation, especially the gaps in the needle handles. In the absence of liquid flow during the rinsing process, the residue in the gap cannot be removed. At this time, spraying will achieve good results.

[0206] Step 15: drying the acupuncture needles.

[0207] The third cleaning process is suitable for the subsequent production of dense and uniform PVD coating or CVD coating, which has a good effect of reducing needle insertion pain.

[0208] To sum up, the cleaning process in the present invention can achieve excellent cleaning effect by switching multiple cleaning agents in a single cleaning process and performing multiple targeted spraying; the three cleaning processes provided in the present invention correspond to conventional uncoated or silicone oil coated acupuncture needles, traditional copper ring handle acupuncture needles, PVD coated or CVD coated acupuncture needles; in this process, automatic control of various spray parameters can be achieved through automatic spraying equipment, avoiding various uncontrollable phenomena caused by manual operation and saving manpower; only a single device or a small amount of equipment is needed to meet the spraying requirements of the entire surface treatment chain process, and is suitable for all specifications of acupuncture needles.

[0209] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A cleaning process for acupuncture needles, characterized in that: The cleaning process uses an automatic spraying device and includes the following steps: Step 1: Soak the acupuncture needles to be cleaned in a high-temperature wax removal liquid, and heat the wax removal liquid to 65 to 80 degrees Celsius; Step 2, performing a first spraying step on the acupuncture needles; The acupuncture needles are repeatedly and alternately sprayed with a first spray liquid and a second spray liquid by the automatic spray device; The first spraying liquid is municipal water or first-grade pure water, with a temperature of 65 to 85 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.0 to 4.5 MPa, and a spraying flow rate of 70 to 120 ml / min; the second spraying liquid is municipal water, with a temperature of 35 to 45 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 1 MPa, and a spraying flow rate of 200 to 350 ml / min; Step 3, alkali washing the acupuncture needles; Step 4, performing a third spraying step on the acupuncture needles; The acupuncture needles are repeatedly and alternately sprayed with a fifth spray liquid and a sixth spray liquid by the automatic spray device; The fifth spraying liquid is municipal water or first-class pure water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.5 to 3.5 MPa, and a spraying flow rate of 70 to 100 ml / min; the sixth spraying liquid is municipal water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 250 to 400 ml / min; Step 5, rinsing the acupuncture needles with pure water; Step 6, performing a fourth spraying step on the acupuncture needles; The acupuncture needles are repeatedly and alternately sprayed with a seventh spraying liquid and an eighth spraying liquid by the automatic spraying device; The seventh spraying liquid is secondary pure water, the temperature is 45 to 65 degrees Celsius, the single spraying time is 70 to 120 seconds, the spraying pressure is 2.5 to 3.5Mpa, and the spraying flow rate is 70 to 100ml / min; the eighth spraying liquid is secondary pure water, the temperature is 65 to 85 degrees Celsius, the single spraying time is 70 to 120 seconds, the spraying pressure is 0.14 to 2Mpa, and the spraying flow rate is 100 to 150ml / min; Step seven, drying the acupuncture needles.

2. A cleaning process for acupuncture needles according to claim 1, characterized in that: Before step 3, the method further includes the following steps:

1. Soak the acupuncture needles in a medium-temperature wax removal liquid, and heat the wax removal liquid to 65 to 75 degrees Celsius; 2. performing a second spraying step on the acupuncture needles; The acupuncture needles are repeatedly and alternately sprayed with a third spray liquid and a fourth spray liquid by the automatic spray device; The third spray liquid is municipal water or first-grade pure water, with a temperature of 55 to 75 degrees Celsius, a single spray time of 30 to 90 seconds, a spray pressure of 2.0 to 4.5 MPa, and a spray flow rate of 70 to 120 ml / min; the fourth spray liquid is municipal water, with a temperature of 35 to 45 degrees Celsius, a single spray time of 30 to 60 seconds, a spray pressure of 0.14 to 1 MPa, and a spray flow rate of 200 to 350 ml / min.

3. A cleaning process for acupuncture needles according to claim 1, characterized in that: Before step 5, the method further includes the following steps:

1. acid-washing the acupuncture needles; 2. performing a third spraying step again on the acupuncture needles; The acupuncture needles are repeatedly and alternately sprayed with a fifth spray liquid and a sixth spray liquid by the automatic spraying device.

4. A cleaning process for acupuncture needles, characterized in that: The cleaning process uses an automatic spraying device and includes the following steps: Step 1: Soak the acupuncture needles to be cleaned in a high-temperature wax removal liquid, and heat the wax removal liquid to 65 to 80 degrees Celsius; Step 2: performing a first spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a first spraying liquid and a second spraying liquid repeatedly; The first spraying liquid is municipal water or first-grade pure water, with a temperature of 65 to 85 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.0 to 4.5 MPa, and a spraying flow rate of 70 to 120 ml / min; the second spraying liquid is municipal water, with a temperature of 35 to 45 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 1 MPa, and a spraying flow rate of 200 to 350 ml / min; Step 3, rinsing the acupuncture needles with pure water; Step 4: performing a fourth spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a seventh spraying liquid and an eighth spraying liquid repeatedly; The seventh spraying liquid is secondary pure water, the temperature is 45 to 65 degrees Celsius, the single spraying time is 70 to 120 seconds, the spraying pressure is 2.5 to 3.5Mpa, and the spraying flow rate is 70 to 100ml / min; the eighth spraying liquid is secondary pure water, the temperature is 65 to 85 degrees Celsius, the single spraying time is 70 to 120 seconds, the spraying pressure is 0.14 to 2Mpa, and the spraying flow rate is 100 to 150ml / min; Step 5: drying the acupuncture needles.

5. A cleaning process for acupuncture needles according to claim 4, characterized in that: After step 2, the method further includes the following steps:

1. Passivating the acupuncture needles; 2. performing a fifth spraying step on the acupuncture needles, repeatedly and alternately spraying the acupuncture needles with a ninth spraying liquid and a tenth spraying liquid through the automatic spraying device; The ninth spraying liquid is secondary pure water with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.5 to 3.5 MPa, and a spraying flow rate of 70 to 100 ml / min; the tenth spraying liquid is municipal water with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 250 to 400 ml / min.

6. A cleaning process for acupuncture needles according to claim 5, characterized in that: Before step 3, the method further includes the following steps:

1. neutralizing the acupuncture needles; 2. performing a sixth spraying step on the acupuncture needles, repeatedly and alternately spraying the acupuncture needles with an eleventh spraying liquid and a twelfth spraying liquid through the automatic spraying device; The eleventh spraying liquid is secondary pure water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 60 to 150 seconds, a spraying pressure of 3.5 to 4.5 MPa, and a spraying flow rate of 100 to 145 ml / min; the twelfth spraying liquid is secondary pure water, with a temperature of 50 to 60 degrees Celsius, a single spraying time of 15 to 30 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 100 to 150 ml / min.

7. A cleaning process for acupuncture needles according to claim 6, characterized in that: In the sixth spraying step, the automatic spraying device is allowed to stand still for 10 to 15 seconds in the middle of the alternating switching between the eleventh spraying liquid and the twelfth spraying liquid.

8. A cleaning process for acupuncture needles, characterized in that: The cleaning process uses an automatic spraying device and includes the following steps: Step 1: Soak the acupuncture needles to be cleaned in a high-temperature wax removal liquid, and heat the wax removal liquid to 65 to 80 degrees Celsius; Step 2: performing a first spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a first spraying liquid and a second spraying liquid repeatedly; The first spraying liquid is municipal water or first-grade pure water, with a temperature of 65 to 85 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.0 to 4.5 MPa, and a spraying flow rate of 70 to 120 ml / min; the second spraying liquid is municipal water, with a temperature of 35 to 45 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 1 MPa, and a spraying flow rate of 200 to 350 ml / min; Step 3, cleaning the acupuncture needles; Step 4: performing a third spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a fifth spraying liquid and a sixth spraying liquid repeatedly; The fifth spraying liquid is municipal water or first-class pure water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 90 seconds, a spraying pressure of 2.5 to 3.5 MPa, and a spraying flow rate of 70 to 100 ml / min; the sixth spraying liquid is municipal water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 30 to 60 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 250 to 400 ml / min; Step 5, rinsing the acupuncture needles with pure water; Step 6: performing a seventh spraying step on the acupuncture needles, using the automatic spraying device to spray the acupuncture needles alternately with a thirteenth spraying liquid and a fourteenth spraying liquid repeatedly; The thirteenth spraying liquid is secondary pure water, the temperature is 45 to 65 degrees Celsius, the single spraying time is 30 to 90 seconds, the spraying pressure is 3.5 to 4.5Mpa, and the spraying flow rate is 100 to 145ml / min; the fourteenth spraying liquid is secondary pure water, the temperature is 50 to 60 degrees Celsius, the single spraying time is 30 to 60 seconds, the spraying pressure is 0.14 to 2Mpa, and the spraying flow rate is 100 to 150ml / min; Step seven, drying the acupuncture needles.

9. A cleaning process for acupuncture needles according to claim 8, characterized in that: After step 6, the method further includes the following steps:

1. performing electrolytic polishing on the acupuncture needles; 2. performing an eighth spraying step on the acupuncture needles, repeatedly and alternately spraying the acupuncture needles with a fifteenth spraying liquid and a sixteenth spraying liquid through the automatic spraying device; The fifteenth spraying liquid is secondary pure water, the temperature is 50 to 60 degrees Celsius, the single spraying time is 30 to 60 seconds, the spraying pressure is 0.14 to 2Mpa, and the spraying flow rate is 100 to 150ml / min; the sixteenth spraying liquid is secondary pure water, the temperature is 30 to 40 degrees Celsius, and the single spraying time is 20 seconds; 3. neutralizing the acupuncture needles; 4. performing a sixth spraying step on the acupuncture needles, repeatedly and alternately spraying the acupuncture needles with an eleventh spraying liquid and a twelfth spraying liquid through the automatic spraying device; The eleventh spraying liquid is secondary pure water, with a temperature of 45 to 65 degrees Celsius, a single spraying time of 60 to 150 seconds, a spraying pressure of 3.5 to 4.5 MPa, and a spraying flow rate of 100 to 145 ml / min; the twelfth spraying liquid is secondary pure water, with a temperature of 50 to 60 degrees Celsius, a single spraying time of 15 to 30 seconds, a spraying pressure of 0.14 to 2 MPa, and a spraying flow rate of 100 to 150 ml / min.

10. A cleaning process for acupuncture needles according to claim 9, characterized in that: Before step 7, the method further includes the following steps:

1. Cleaning the acupuncture needles; 2. performing the sixth spraying step again on the acupuncture needles, and repeatedly and alternately spraying the acupuncture needles with an eleventh spraying liquid and a twelfth spraying liquid through the automatic spraying device; 3. Rinse the acupuncture needles with pure water; 4. The seventh spraying step is performed again on the acupuncture needles, and the acupuncture needles are repeatedly and alternately sprayed with a thirteenth spraying liquid and a fourteenth spraying liquid by the automatic spraying device.

11. A cleaning process for acupuncture needles according to claim 9 or 10, characterized in that: In the sixth spraying step, the automatic spraying device is allowed to stand still for 10 to 15 seconds in the middle of the alternating switching between the eleventh spraying liquid and the twelfth spraying liquid.

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