Method for manufacturing a hot-air nozzle and hot-air nozzle

Abstract

The application discloses a manufacturing method of a hot air nozzle, which comprises the following steps: S1, flaring one end of a raw pipe; S2, inserting the end of the raw pipe which is not flared into an inner mold with an inclined gap at the end; S3, oppositely clamping a bending upper mold and a bending lower mold at the end of the raw pipe which extends into the inner mold, the bending upper mold is formed with an arc surface which is inclined relative to the flared end of the raw pipe, the inclined direction of the arc surface is the same as that of the gap on the inner mold, and the outer wall of the flared end of the raw pipe is matched with at least a partial region of the arc surface; and S4, bending the raw pipe so that the inner wall of the end of the raw pipe which extends into the inner mold is matched with at least a partial region of the gap, and the outer wall of the end of the raw pipe which extends into the inner mold is matched with at least a partial region of the arc surface. The application also discloses the hot air nozzle manufactured by the above method.

Description

TECHNICAL FIELD

[0001] The present application relates to the tool processing manufacturing technical field, and particularly relates to a manufacturing method of a hot air nozzle and the hot air nozzle. BACKGROUND

[0002] At present, the existing hot air nozzle is not bent, the nozzle and the bayonet are located on the same axis, the hot air from the hot air gun is directly sprayed from the nozzle, which leads to uneven energy density distribution of the hot air nozzle in the nozzle direction, which is not conducive to the fine control of the gun. In addition, when the heater and the nozzle are located on the same axis, the experience of the operator is affected. SUMMARY

[0003] The embodiment of the present application provides a manufacturing method of a hot air nozzle, solves the problem that the manufactured hot air nozzle is not bent and has low output efficiency and poor effect in the prior art, realizes effective bending of the raw pipe, and has the beneficial effect that the output hot air energy density distribution is more uniform without affecting the structure strength of the hot air nozzle. The embodiment of the present application also provides a hot air nozzle obtained based on the above manufacturing method, the output hot air energy density distribution of which is more uniform, and the curved nozzle is more comfortable to operate, which can effectively avoid the harm of backflow hot air to the operator.

[0004] According to a first aspect of the present application, a manufacturing method of a hot air nozzle is provided, which comprises the following steps:

[0005] S1, flaring one end of a raw pipe;

[0006] S2, inserting one end of an inner mold in the shape of a core rod into the raw pipe along the length direction of the raw pipe from the end of the raw pipe which is not flared; a part of the side wall of the one end of the inner mold inserted into the raw pipe has a notch inclined relative to the end of the raw pipe;

[0007] S3, oppositely clamping a bending upper mold and a bending lower mold at the end of the raw pipe inserted with the inner mold, the bending upper mold and the bending lower mold jointly enclose a cavity which is adapted to the outer wall of the end of the raw pipe inserted with the inner mold on the side close to the flared end of the raw pipe, the bending upper mold forms an arc surface on the opposite side which is inclined relative to the end of the raw pipe inserted with the inner mold, the inclination direction of the arc surface is the same as that of the notch, and the outer wall of the end of the raw pipe inserted with the inner mold is adapted to at least a part of the arc surface;

[0008] S4, bending the raw pipe to make

[0009] The raw pipe material extends into the inner wall of one end of the inner mold and at least partially matches the notch.

[0010] The raw pipe material extends into the outer wall of one end of the inner mold and at least partially matches the arc surface.

[0011] In a possible implementation manner, the method further comprises:

[0012] S5, after the raw pipe material is bent, the inner mold, the bending upper mold and the bending lower mold are removed, and one end of the raw pipe material after bending is flattened, so that the outer wall of at least part of the area close to the end of the end is flattened and the shape of the cross section perpendicular to the axial direction of the end is strip-shaped.

[0013] In the above possible implementation manner, further,

[0014] In S5, the length direction of the strip-shaped cross section is perpendicular to the axial direction of the raw pipe material after the end is flared in S1.

[0015] In a possible implementation manner,

[0016] In S1, after the end of the raw pipe material is flared, the outer wall close to the end of the end is cylindrical, and the outer wall of at least part of the area other than the end is conical.

[0017] In a possible implementation manner, the method further comprises:

[0018] S6, a first slot and a second slot perpendicular to each other are cut at the side wall of the end of the raw pipe material after flaring, the first slot is cut along the axial direction perpendicular to the end of the raw pipe material after flaring, and the second slot is cut along the axial direction parallel to the end of the raw pipe material after flaring; one end of the second slot intersects with the first slot, and the other end is located at the edge of the end of the raw pipe material after flaring.

[0019] According to a second aspect of the present application, a hot air nozzle is provided, comprising a bayonet end and an air outlet end; wherein,

[0020] The bayonet end is configured to be connected with the output end of the hot air machine;

[0021] The air outlet end is arranged obliquely relative to the bayonet end and forms an angle with the axis of the output end of the hot air machine.

[0022] In a possible implementation manner,

[0023] The outer wall close to the end of the bayonet end is cylindrical, the outer wall of at least part of the area other than the end is conical, and the diameter gradually decreases along the direction from the end of the bayonet end to the air outlet end.

[0024] In the possible implementation manner above, further,

[0025] The bayonet end has a first notch and a second notch near the outer wall of the end portion, the first notch is perpendicular to the axial direction of the bayonet end, and the second notch is parallel to the axial direction of the bayonet end; one end of the second notch intersects with the first notch, and the other end is located at the edge of the end portion of the bayonet end.

[0026] In the possible implementation manner above, further,

[0027] The outer periphery on both sides of the second notch is provided with a fixing member, and the fixing member is fixedly connected with the outer wall of the bayonet end; the fixing member has a connecting surface, and a connecting hole is formed in the connecting surface, and the axial direction of the connecting hole is perpendicular to the axial direction of the bayonet end; the connecting surfaces of the two fixing members are oppositely arranged, and the positions of the connecting holes correspond to each other.

[0028] In a possible implementation manner,

[0029] The outer wall of the air outlet end near the end portion of at least a partial region is flat, and the shape of the cross section perpendicular to the length direction is a long strip; the length direction of the long strip-shaped cross section is perpendicular to the axial direction of the bayonet end.

[0030] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0031] The manufacturing method of the hot air nozzle provided in the embodiments of the present application realizes effective bending of the raw material pipe by the core rod-shaped inner die with the inclined gap and the curved upper die with the inclined arc surface. Through the technical solution, the present application solves the problem in the prior art that the manufactured hot air nozzle is not bent and has low output efficiency and poor effect of hot air, realizes effective bending of the raw material pipe, and has the beneficial effect that the output hot air energy density distribution is more uniform without affecting the structural strength of the hot air nozzle. The embodiments of the present application further provide a hot air nozzle obtained based on the manufacturing method, and the output hot air energy density distribution is more uniform, and the curved nozzle is more comfortable to operate, which can effectively avoid the harm of backflow hot air to the operator. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the description of the embodiments of the present application or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0033] Figure 1 A structure diagram of a hot air nozzle provided by an embodiment of the present application;

[0034] Figure 2 A structure diagram of a flaring die used in a manufacturing method of a hot air nozzle provided by an embodiment of the present application;

[0035] Figure 3 A front view structure diagram of an inner die used in a manufacturing method of a hot air nozzle provided by an embodiment of the present application;

[0036] Figure 4 A side view structure diagram of an inner die used in a manufacturing method of a hot air nozzle provided by an embodiment of the present application;

[0037] Figure 5 A side view structure diagram of a curved upper die used in a manufacturing method of a hot air nozzle provided by an embodiment of the present application;

[0038] Figure 6 A top view structure diagram of a curved upper die used in a manufacturing method of a hot air nozzle provided by an embodiment of the present application;

[0039] Figure 7 A side view structure diagram of a curved lower die used in a manufacturing method of a hot air nozzle provided by an embodiment of the present application;

[0040] Figure 8 A top view structure diagram of a curved lower die used in a manufacturing method of a hot air nozzle provided by an embodiment of the present application.

[0041] Figure legend: 1 - air outlet end; 2 - fixing member; 3 - fixing bolt; 4 - fixing nut; 5 - bayonet end. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of, rather than all of, the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0043] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] In a first aspect, the embodiments of the present application provide a manufacturing method of a hot air nozzle, comprising the following steps:

[0045] S1, flaring one end of a raw material pipe;

[0046] S2, inserting one end of a core rod-shaped inner mold into the raw material pipe along the length direction of the raw material pipe from the end of the raw material pipe which has not been flared; a part of the side wall of the one end of the inner mold inserted into the raw material pipe has a notch inclined relative to the end of the raw material pipe;

[0047] S3, oppositely clamping a bending upper mold and a bending lower mold at the end of the raw material pipe inserted with the inner mold, the bending upper mold and the bending lower mold jointly enclose a cavity which is adapted to the outer wall of the end of the raw material pipe inserted with the inner mold on the side close to the flared end of the raw material pipe, the bending upper mold forms an arc surface on the opposite side which is inclined relative to the end of the raw material pipe inserted with the inner mold, the inclination direction of the arc surface is the same as that of the notch, and the outer wall of the end of the raw material pipe inserted with the inner mold is adapted to at least a part of the arc surface;

[0048] S4, bending the raw material pipe so that

[0049] the inner wall of the end of the raw material pipe inserted with the inner mold is attached to at least a part of the notch;

[0050] the outer wall of the end of the raw material pipe inserted with the inner mold is attached to at least a part of the arc surface.

[0051] The manufacturing method of the hot air nozzle provided by the embodiment realizes effective bending of the raw material pipe by the core rod-shaped inner mold with the inclined gap and the curved upper mold with the inclined arc surface. Through the technical scheme, the application solves the problem of low output efficiency and poor effect of the manufactured hot air nozzle without bending in the prior art, realizes effective bending of the raw material pipe, and has the beneficial effect of more uniform energy density distribution of the output hot air without affecting the structural strength of the hot air nozzle.

[0052] In a preferred embodiment, further comprising:

[0053] S5, after the raw material pipe is bent, the inner mold, the curved upper mold and the curved lower mold are removed, and one end of the bent raw material pipe is flattened, so that the outer wall of at least part of the area near the end of the end is flat, and the shape of the cross section perpendicular to the axial direction of the end is strip-shaped.

[0054] Specifically, in this way, a flat strip-shaped nozzle can be processed at the outlet end, which facilitates the output of more concentrated and high-density hot air flow of the finished hot air nozzle during use, thereby improving the output efficiency and effect of the finished hot air nozzle.

[0055] In a further preferred embodiment,

[0056] In S5, the length direction of the strip-shaped cross section is perpendicular to the axial direction of the one end of the raw material pipe after the flaring.

[0057] In a preferred embodiment,

[0058] In S1, after the one end of the raw material pipe is flared, the outer wall near the end of the end is cylindrical, and the outer wall of at least part of the remaining area of the end is conical.

[0059] In a preferred embodiment, further comprising:

[0060] S6, a first slot and a second slot perpendicular to each other are cut at the side wall of the one end of the raw material pipe after flaring, the first slot is cut along the axial direction perpendicular to the one end of the raw material pipe after flaring, and the second slot is cut along the axial direction parallel to the one end of the raw material pipe after flaring; one end of the second slot intersects with the first slot, and the other end is located at the edge of the one end of the raw material pipe after flaring.

[0061] In a preferred embodiment, further comprising:

[0062] The bayonet end 5 is configured to be connected with the output end of the hot air machine.

[0063] The air outlet end 1 is arranged obliquely relative to the bayonet end 5 and forms an angle with the axis of the output end of the hot air machine.

[0064] The hot air nozzle obtained based on the manufacturing method has a relatively uniform energy density distribution of the output hot air, and the curved air outlet end 1 is more comfortable to operate, which can effectively avoid the harm of backflow hot air to the operator.

[0065] In a preferred embodiment,

[0066] The outer wall of the end portion of the bayonet end 5 is cylindrical, and the outer wall of at least part of the remaining area is conical and gradually decreases in diameter from the end portion of the bayonet end 5 to the air outlet end 1.

[0067] In a further preferred embodiment,

[0068] The outer wall of the end portion of the bayonet end 5 has a first slot and a second slot, the first slot is perpendicular to the axial direction of the bayonet end 5, and the second slot is parallel to the axial direction of the bayonet end 5; one end of the second slot intersects with the first slot, and the other end is located at the edge of the end portion of the bayonet end 5.

[0069] In a further preferred embodiment,

[0070] An external fixing member 2 is arranged on each side of the second slot, and the fixing member 2 is fixedly connected to the outer wall of the bayonet end 5; the fixing member 2 has a connecting surface, and a connecting hole is formed in the connecting surface, the axial direction of the connecting hole is perpendicular to the axial direction of the bayonet end 5; the connecting surfaces of the two fixing members 2 are oppositely arranged, and the positions of the connecting holes correspond to each other. In this embodiment, the two fixing members 2 are fixedly connected to each other by passing through the connecting holes of the fixing members 2 and cooperating with the fixing nuts 4.

[0071] In a further preferred embodiment,

[0072] The outer wall of at least part of the end portion of the air outlet end 1 is flat, and the shape of the cross section perpendicular to the length direction is strip-shaped; the length direction of the strip-shaped cross section is perpendicular to the axial direction of the bayonet end 5.

[0073] Next, the application will be further described by combining the actual application of the above-mentioned embodiments. Figures 1-5 ,

[0074] Manufacturing method flow:

[0075] 1. Use an expanding die ( Figure 2 , Figure 3) one end of the φ29x0.8 stainless steel pipe is flared on an oil press, and the inner diameter of the flared end is φ31.5mm.

[0076] 2. After the first step, install the core bar-shaped inner mold ( Figure 4 ) on the other end of the stainless steel pipe.

[0077] 3. Bend the end of the stainless steel pipe with the core bar inner mold installed by 15° using the bending upper mold ( Figure 5 、 Figure 6 ) and the bending lower mold ( Figure 7 、 Figure 8 ).

[0078] 4. Use the nozzle forming mold to flatten the nozzle end of the pipe, and the width of the flattened nozzle is 3mm.

[0079] 5. After bending, the flared end and the bent section will be deformed to varying degrees, and the ovality of the flared end and the shape of the bent section are corrected using a shaping mold.

[0080] 6. Use a special mold on a punch to punch a circumferential notch and an axial notch on the bayonet end, respectively, and the circumferential notch is punched three times.

[0081] 7. Point weld the punched left and right clamping plates on the pipe.

[0082] 8. Shaping and polishing.

[0083] The structure characteristics and specifications of the hot air nozzle manufactured are as follows:

[0084] The stainless steel material, the bayonet end is a circular interface with a diameter of φ32mm, which is connected with the heater during use, and the nozzle 1 is tightened on the heater through the screws 3 and the left and right clamping plates 4; the nozzle end is a flat structure with an opening width of 3mm and a length of 40mm, which is used to output the hot air generated by the heater to generate a hot air band of about 40mm, which acts on the joints of floor leather, PVC, plastic and other materials, thereby realizing the welding of the materials. Processing requirements: φ29x0.8 stainless steel pipe material is used, and specific inner and outer bending molds are used to expand, bend, flatten, punch, weld, shape and polish the pipe material.

[0085] Each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment mainly explains the difference from other embodiments.

[0086] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some or all of the technical features thereof can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A method for manufacturing a hot air nozzle, characterized in that, Includes the following steps: S1. One end of the raw material pipe is flared; In S1, after one end of the raw material pipe is flared, the outer wall near the end is cylindrical, and the outer wall of at least a portion of the remaining part of the end is conical. S2. One end of the mandrel-shaped inner mold is inserted into the interior of the raw material pipe along the length of the raw material pipe from the end that has not been flared; a portion of the side wall of the end of the inner mold that extends into the raw material pipe has a notch that is inclined relative to that end of the raw material pipe. S3. The upper bending die and the lower bending die are clamped relative to each other at the end of the raw material pipe into which the inner die is inserted. The upper bending die and the lower bending die together enclose the side of the raw material pipe near the flared end to form a cavity that fits the outer wall of the end of the raw material pipe into which the inner die is inserted. The upper bending die has an arc surface that is inclined relative to the end of the raw material pipe into which the inner die is inserted on the opposite side. The inclination direction of the arc surface is the same as the inclination direction of the notch. The outer wall of the end of the raw material pipe into which the inner die is inserted is adapted to at least a portion of the arc surface. S4. Bend the raw material pipe to make... The inner wall of the raw material pipe extending into one end of the inner mold is in contact with at least a portion of the notch; The outer wall of the raw material pipe extending into one end of the inner mold is in contact with at least a portion of the arc surface; S5. After bending the raw material pipe, remove the inner mold, the upper bending mold, and the lower bending mold, and flatten one end of the bent raw material pipe so that the outer wall of at least a portion of the end near the end is flat and the cross-section perpendicular to the axial direction of the end is elongated; in S5, the length direction of the elongated cross-section is perpendicular to the axial direction of the flared end of the raw material pipe in S1. Also includes: S6. Cut a first groove and a second groove perpendicular to each other at the side wall of the flared end of the raw material pipe. The first groove is cut along an axis perpendicular to the flared end of the raw material pipe, and the second groove is cut along an axis parallel to the flared end of the raw material pipe. One end of the second groove intersects with the first groove, and the other end is located at the edge of the threaded end of the raw material pipe.

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