CN110681784B - Gas water heater segmented burner nozzle assembly tool and assembly process - Google Patents
Gas water heater segmented burner nozzle assembly tool and assembly process Download PDFInfo
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- CN110681784B CN110681784B CN201910776795.8A CN201910776795A CN110681784B CN 110681784 B CN110681784 B CN 110681784B CN 201910776795 A CN201910776795 A CN 201910776795A CN 110681784 B CN110681784 B CN 110681784B
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- push rod
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004080 punching Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 5
- 230000011218 segmentation Effects 0.000 claims description 4
- 239000000565 sealant Substances 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses a gas water heater sectional burner nozzle assembly fixture, which is characterized by comprising: a vibration plate for arranging the nozzles in a defined direction; positioning means for receiving the nozzles vibrated from the vibration plate and positioning at a set pitch; the clamp is used for clamping the nozzle and placing the nozzle on a corresponding unthreaded hole of the segmented valve body; the punching riveting device can extend into the segmented valve body and is used for punching and riveting the nozzle on the segmented valve body. The invention also discloses a gas water heater sectional burner nozzle assembly process. The invention realizes the automatic assembly of the nozzle and the segmented valve body, reduces the labor cost and effectively improves the assembly efficiency. Meanwhile, as the nozzles and the sectional valve body are sealed and riveted through the smooth surface, the hidden troubles of different heights and air leakage caused by uneven sealant coating in the traditional screw fixing technology are avoided, the injection distance of each nozzle is ensured to be consistent, and the combustion performance of the main engine is good.
Description
Technical Field
The invention relates to the technical field of manufacturing of gas water heaters, in particular to a gas water heater sectional burner nozzle assembly tool and an assembly process.
Background
As shown in fig. 1, the sectional burner of the gas water heater mainly comprises a sectional valve body 01 and a plurality of nozzles 02. The segmented valve body 01 is provided with a plurality of internal threaded holes 03, and the head of each nozzle 02 is provided with external threads. During assembly, 1) the external threads of the head of the nozzle 02 are coated with sealant one by one, 2) the nozzle 02 is screwed into the 01 threaded hole in the segment valve body one by one at about 1/3, and 3) the nozzle 02 is aligned by one by a screw driver manually.
The prior nozzle assembly mode mainly has the following defects: 1) Because the sealant is cured to a certain extent, the assembled nozzles are inconsistent in height and the injection distance is changed, so that the combustion performance of the general engine is poor. 2) The internal thread of the segment valve body and the external thread of the nozzle head need to be processed, and the defects of poor processing precision and easy tooth sliding during assembly exist. 3) In the assembly process, the assembly is performed purely manually, the time is long, and the assembly process becomes a bottleneck in the production line.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the gas water heater sectional burner nozzle assembly tool which can realize automatic installation of the nozzle and the sectional valve body without sealing glue.
The invention also provides a gas water heater sectional burner nozzle assembly process.
In order to achieve the above purpose, the invention adopts the following technical scheme.
The utility model provides a gas heater segmentation combustor nozzle assembly fixture which characterized in that includes: a vibration plate for arranging the nozzles in a defined direction; positioning means for receiving the nozzles vibrated from the vibration plate and positioning at a set pitch; the clamp is used for clamping the nozzle and placing the nozzle on a corresponding unthreaded hole of the segmented valve body; the punching riveting device can extend into the segmented valve body and is used for punching and riveting the nozzle on the segmented valve body.
More preferably, the positioning device includes: the device comprises a positioning block, a strip-shaped groove arranged on the positioning block, a push rod slidably arranged in the strip-shaped groove, a plurality of push rod clamping grooves arranged on the push rod, and a first cylinder for driving the push rod to move back and forth; the distance between two adjacent push rod clamping grooves is fixed, each push rod clamping groove is used for receiving one nozzle, and the receiving and positioning of each push rod clamping groove on the nozzle are realized by moving the push rod.
More preferably, two push rods are respectively arranged at two ends of the strip-shaped groove, one first cylinder is arranged corresponding to each push rod, and the distance between two adjacent push rod clamping grooves is consistent after the two push rods are butted together; the vibration plate is provided with two discharging sliding grooves, and each discharging sliding groove supplies the nozzle for one push rod.
More preferably, the jig includes: the second cylinder drives the chuck to vertically move, and the telescopic rod drives the chuck to horizontally move; clamping positions which are in one-to-one correspondence with the unthreaded holes are arranged on the clamping heads.
More preferably, the punch riveting device includes: the positioning sleeve is movably inserted into the punch rod in the positioning sleeve, a plane and a plurality of concave surfaces are arranged on the side wall of the punch rod, and the same side of each concave surface is in transitional connection with the plane through a corresponding inclined surface; steel balls are arranged in the concave surfaces, through holes corresponding to the concave surfaces one by one are arranged on the side wall of the positioning sleeve, the through holes correspond to the light holes one by one, and the steel balls can partially penetrate through the through holes; when in punching riveting, the positioning sleeve is inserted from one end of the segmented valve body, so that the through hole is aligned with the unthreaded hole; and then the punch rod is moved, so that the steel balls slide from the concave surface to the plane, and the nozzle inner hole is ejected and extruded from the through hole, so that flanging riveting is realized.
More preferably, the number of the press riveting devices is two, and the press riveting devices are respectively inserted from two ends of the segmented valve body.
More preferably, a return spring for aligning the concave surface and the through hole is provided between the positioning sleeve and the punch.
More preferably, the vibration disc, the positioning device, the clamp and the punching and riveting device are all installed on an assembly machine main body, and the assembly machine main body is also provided with a positioning clamp for clamping the segmented valve body.
The sectional burner assembly process for the gas water heater is characterized in that the nozzle and the sectional valve body are sealed through a smooth surface and are riveted and fixed, and the assembly process specifically comprises the following steps: 1) Clamping and positioning the sectional valve body, clamping and positioning the sectional valve body by using a positioning clamp, and enabling a light hole of the sectional valve body to face upwards; 2) Taking out the nozzles, and arranging and taking out the nozzles in a limited direction by utilizing a vibration disc; 3) The nozzle is assembled with the sectional valve body, and the nozzle is clamped by a clamp and is pressed and placed on the unthreaded hole; 4) And (3) punching and riveting, namely extruding an inner hole of the nozzle by using a punching and riveting device, so that the nozzle flanging is riveted on the corresponding unthreaded hole.
More preferably, in the step 2) of taking out the nozzle, the nozzle is taken out at a defined interval by using a push rod with a clamping groove; in the step 3) of assembling the nozzle and the segmented valve body, all the nozzles required by the segmented valve body are clamped and pressed and placed at one time by using the same clamp.
The beneficial effects of the invention are as follows:
The assembly tool and the assembly process for the sectional burner of the gas water heater realize automatic assembly of the nozzle and the sectional valve body, reduce labor cost and effectively improve assembly efficiency. Meanwhile, as the nozzles and the sectional valve body are sealed and riveted through the smooth surface, the hidden troubles of different heights and air leakage caused by uneven sealant coating in the traditional screw fixing technology are avoided, the injection distance of each nozzle is ensured to be consistent, and the combustion performance of the main engine is good.
Drawings
FIG. 1 is a schematic diagram showing the assembly of a sectional burner nozzle of a conventional gas water heater.
Fig. 2 is a schematic structural diagram of an assembly fixture provided by the invention.
Fig. 3 is a schematic view of the chuck.
Fig. 4 shows a schematic structure of a press riveting device.
Fig. 5 is a schematic view of the structure of the positioning sleeve.
Fig. 6 shows a schematic drawing of the plunger structure.
Fig. 7 shows a schematic view of the nozzle structure.
FIG. 8 is a schematic diagram illustrating the assembly steps of the nozzle and the segmented valve body.
Fig. 9 is a schematic diagram showing a press riveting step.
Reference numerals illustrate:
01: segment valve body, 02: nozzle, 03: an internal threaded hole.
1: Vibration dish, 2: positioning device, 3: clamp, 4: punching and riveting device, 5: nozzle, 6: segment valve body, 7: light hole, 8: reset spring, 9: third cylinder, 10: assembly machine main body, 11: and positioning the clamp.
1-1: And a discharging chute.
2-1: Positioning block, 2-2: bar-shaped groove, 2-3: push rod, 2-4: push rod draw-in groove, 2-5: a first cylinder.
3-1: Chuck, 3-2: second cylinder, 3-3: telescoping rod, 3-4: and (5) clamping the position.
4-1: Positioning sleeve, 4-2: punch stem, 4-3: plane, 4-4: concave, 4-5: inclined plane, 4-6: steel ball, 4-7: and a through hole.
Detailed Description
In the description of the present invention, it should be noted that, for the azimuth words such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present invention and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present invention that the device or element referred to must have a specific azimuth configuration and operation.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such features, and in the description of the invention, "at least" means one or more, unless clearly specifically defined otherwise.
In the present invention, unless explicitly stated and limited otherwise, the terms "assembled," "connected," and "connected" are to be construed broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; can be directly connected or connected through an intermediate medium, and can be communicated with the inside of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless specified and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "below," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply representing the first feature as having a higher level than the second feature. The first feature being "above," "below," and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or simply indicating that the first feature is level below the second feature.
The following description of the specific embodiments of the present invention is further provided with reference to the accompanying drawings, so that the technical scheme and the beneficial effects of the present invention are more clear and definite. The embodiments described below are exemplary by referring to the drawings for the purpose of illustrating the invention and are not to be construed as limiting the invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Example 1
As shown in fig. 2-7, a gas water heater sectional burner nozzle assembly fixture includes: a vibration plate 1 for arranging nozzles 5 in a defined direction; positioning means 2 for receiving the nozzles 5 vibrated from the vibration plate 1 and positioning at a set pitch; a clamp 3 for clamping the nozzle 5 and for placing onto a corresponding aperture 7 of the segmented valve body 6; the punch riveting device 4 can extend into the segmented valve body 6 and is used for punch riveting the nozzle 5 on the segmented valve body 6.
Wherein the positioning device 2 comprises: the device comprises a positioning block 2-1, a strip-shaped groove 2-2 arranged on the positioning block 2-1, a push rod 2-3 slidably arranged in the strip-shaped groove 2-2, a plurality of push rod clamping grooves 2-4 arranged on the push rod 2-3, and a first cylinder 2-5 for driving the push rod 2-3 to move back and forth; the distance between two adjacent push rod clamping grooves 2-4 is fixed, each push rod clamping groove 2-4 is used for receiving one nozzle 5, and the receiving and positioning of each push rod clamping groove 2-4 on the nozzle 5 are realized by moving the push rod 2-3.
In this embodiment, two push rods 2-3 are respectively installed at two ends of the strip-shaped groove 2-2, one first cylinder 2-5 is arranged corresponding to each push rod 2-3, and after the two push rods 2-3 are butted together, the distance between two adjacent push rod clamping grooves 2-4 is consistent; the vibration plate 1 has two discharge slide ways 1-1, each of which discharge slide ways 1-1 supplies one of the push rods 2-3 with the nozzle 5.
By arranging two push rods, the nozzles 5 can be rapidly taken out and arranged, and the assembly efficiency is effectively improved.
The jig 3 includes: a chuck 3-1, a second cylinder 3-2 for driving the chuck 3-1 to move vertically, and a telescopic rod 3-3 for driving the chuck 3-1 to move horizontally; clamping positions 3-4 which are in one-to-one correspondence with the unthreaded holes 7 are arranged on the clamping head 3-1; to achieve a one-time all-gripping of all said nozzles 5 required for a segmented valve body 5.
The press riveting device 4 includes: the positioning sleeve 4-1 is movably inserted into the punch rod 4-2 in the positioning sleeve 4-1, a plane 4-3 and a plurality of concave surfaces 4-4 are arranged on the side wall of the punch rod 4-2, and the same side of each concave surface 4-4 is in transitional connection with the plane 4-3 through a corresponding inclined surface 4-5; steel balls 4-6 are arranged in each concave surface 4-4, through holes 4-7 corresponding to the concave surfaces 4-4 one by one are arranged on the side wall of the positioning sleeve 4-1, the through holes 4-7 correspond to the light holes 7 on the segmented valve body 6 one by one, and the steel balls 4-6 can partially penetrate through the through holes 4-7.
Thus, when in punching and riveting, the positioning sleeve 4-1 is inserted from one end of the segmented valve body 6, so that the through hole 4-7 is aligned with the unthreaded hole 7; and then the punch rod 4-2 is moved, so that the steel balls 4-6 slide from the concave surface 4-4 to the plane 4-3, and then the inner hole of the nozzle 5 is ejected and extruded from the through hole 4-7, so that flanging riveting is realized.
In this embodiment, it is preferable that the number of the press-caulking devices 4 is two, and the press-caulking devices are inserted from both ends of the segment valve body 6, respectively, so as to improve caulking efficiency and caulking reliability.
Preferably, a return spring 8 for aligning the concave surface 4-4 and the through hole 4-7 is provided between the positioning sleeve 4-1 and the plunger 4-2. In this way, during riveting, the third cylinder 9 is used for pushing the punch riveting device 4, and when the end part of the positioning sleeve 4-1 contacts with the end part of the segmented valve body 6 to stop moving, the third cylinder 9 continues to push the punch 4-2 to move, and at the moment, the reset spring 8 is compressed; when the end of the punch 4-2 contacts with the end of the positioning sleeve 4-1 to stop moving, the through hole 4-7 is aligned with the plane 4-3 from being aligned with the concave surface 4-4, so that the steel ball 4-6 is riveted from the top in the through hole 4-7. After riveting is finished, the plunger 4-2 is reset under the action of the reset spring 8, so that the steel balls 4-6 are ensured to be positioned in the concave surface 4-4 in a normal state, and the positioning sleeve 4-1 is prevented from damaging the nozzle 5 in the process of inserting the segmented valve body 6.
Further, the vibration plate 1, the positioning device 2, the clamp 3 and the punch riveting device 4 are all installed on an assembly machine main body 10, and a positioning clamp 11 for clamping the segmented valve body 6 is further arranged on the assembly machine main body 10.
The embodiment provides a gas heater segmentation combustor assembly fixture can realize the automatic assembly of nozzle and segmentation valve body, has reduced the cost of labor, effectively improves assembly efficiency. Meanwhile, as the nozzles and the sectional valve body are punched and riveted through the punching and riveting device, the hidden danger of air leakage caused by uneven coating of sealant is avoided, and the injection distance of each nozzle is ensured to be consistent.
Example 2
The sectional burner assembly process for the gas water heater is characterized in that the nozzle and the sectional valve body are sealed through a smooth surface and are riveted and fixed, and the assembly process specifically comprises the following steps:
1) And clamping and positioning the sectional valve body, and clamping and positioning the sectional valve body by using a positioning clamp, wherein the unthreaded hole of the sectional valve body faces upwards.
2) The nozzles are taken out, and the nozzles are arranged and taken out in a limited direction by using a vibration disk.
3) The nozzle is assembled with a segment valve body, as shown in fig. 8, the nozzle 5 is clamped by a clamp 3 and is pressed and placed on the unthreaded hole 7 of the segment valve body 6.
4) As shown in fig. 9, the inner hole of the nozzle 5 is pressed by the press-caulking device 4, and the nozzle 5 is turned and caulked to the corresponding unthreaded hole 7.
In the embodiment, in the step 2) of taking out the nozzle, the nozzle is taken out according to a limited interval by utilizing a push rod with a clamping groove; in the step 3) of assembling the nozzle and the segmented valve body, all the nozzles required by the segmented valve body are clamped and pressed and placed at one time by using the same clamp, so that the assembly efficiency is improved.
Compared with the prior art, the sectional burner assembly process for the gas water heater realizes automatic assembly of the nozzle and the sectional valve body, reduces labor cost and effectively improves assembly efficiency. Meanwhile, as the nozzles and the sectional valve bodies are sealed and riveted through the smooth surfaces, the hidden danger of air leakage caused by uneven sealant coating is avoided, and the injection distance of each nozzle is ensured to be consistent.
It will be understood by those skilled in the art from the foregoing description of the structure and principles that the present invention is not limited to the specific embodiments described above, but is intended to cover modifications and alternatives falling within the spirit and scope of the invention as defined by the appended claims and their equivalents. The portions of the detailed description that are not presented are all prior art or common general knowledge.
Claims (8)
1. The utility model provides a gas heater segmentation combustor nozzle assembly fixture which characterized in that includes:
A vibration plate for arranging the nozzles in a defined direction;
Positioning means for receiving the nozzles vibrated from the vibration plate and positioning at a set pitch;
the clamp is used for clamping the nozzle and placing the nozzle on a corresponding unthreaded hole of the segmented valve body;
the stamping and riveting device can extend into the sectional valve body and is used for stamping and riveting the nozzle on the sectional valve body;
The positioning device comprises: the device comprises a positioning block, a strip-shaped groove arranged on the positioning block, a push rod slidably arranged in the strip-shaped groove, a plurality of push rod clamping grooves arranged on the push rod, and a first cylinder for driving the push rod to move back and forth; the distance between two adjacent push rod clamping grooves is fixed, each push rod clamping groove is used for receiving one nozzle, and the receiving and positioning of each push rod clamping groove on the nozzle are realized by moving the push rod;
The punch riveting device includes: the positioning sleeve is movably inserted into the punch rod in the positioning sleeve, a plane and a plurality of concave surfaces are arranged on the side wall of the punch rod, and the same side of each concave surface is in transitional connection with the plane through a corresponding inclined surface; steel balls are arranged in the concave surfaces, through holes corresponding to the concave surfaces one by one are arranged on the side wall of the positioning sleeve, the through holes correspond to the light holes one by one, and the steel balls can partially penetrate through the through holes;
When in punching riveting, the positioning sleeve is inserted from one end of the segmented valve body, so that the through hole is aligned with the unthreaded hole; and then the punch rod is moved, so that the steel balls slide from the concave surface to the plane, and the nozzle inner hole is ejected and extruded from the through hole, so that flanging riveting is realized.
2. The assembly fixture for the sectional burner nozzles of the gas water heater according to claim 1, wherein two push rods are respectively arranged at two ends of the strip-shaped groove, one first cylinder is arranged corresponding to each push rod, and the distance between two adjacent push rod clamping grooves is consistent after the two push rods are butted together; the vibration plate is provided with two discharging sliding grooves, and each discharging sliding groove supplies the nozzle for one push rod.
3. The gas water heater segment burner nozzle assembly fixture of claim 1, wherein the fixture comprises: the second cylinder drives the chuck to vertically move, and the telescopic rod drives the chuck to horizontally move; clamping positions which are in one-to-one correspondence with the unthreaded holes are arranged on the clamping heads.
4. The gas water heater segment burner nozzle assembly fixture of claim 1, wherein the number of the stamping riveting devices is two, and the stamping riveting devices are respectively inserted from two ends of the segment valve body.
5. The gas water heater segment burner nozzle assembly fixture of claim 1, wherein a return spring is provided between said locating sleeve and said plunger for aligning said concave surface with said through hole.
6. The assembly fixture for the sectional burner nozzle of the gas water heater according to claim 1, wherein the vibration plate, the positioning device, the clamp and the stamping riveting device are all arranged on an assembly machine body, and the assembly machine body is further provided with a positioning clamp for clamping the sectional valve body.
7. A gas water heater sectional burner assembly process, which is characterized by being realized by using the gas water heater sectional burner nozzle assembly tool as claimed in any one of claims 1-6, wherein the nozzle and the sectional valve body are sealed through a smooth surface and riveted and fixed, and the assembly process specifically comprises the following steps:
1) Clamping and positioning the sectional valve body, clamping and positioning the sectional valve body by using a positioning clamp, and enabling a light hole of the sectional valve body to face upwards;
2) Taking out the nozzles, and arranging and taking out the nozzles in a limited direction by utilizing a vibration disc;
3) The nozzle is assembled with the sectional valve body, and the nozzle is clamped by a clamp and is pressed and placed on the unthreaded hole;
4) Punching and riveting, namely extruding an inner hole of the nozzle by using a punching and riveting device, so that the nozzle flanging is riveted on the corresponding unthreaded hole;
in the step 2), the nozzle is taken out according to a limited interval by utilizing a push rod with a clamping groove.
8. The assembling process of the sectional burner of the gas water heater according to claim 7, wherein in the assembling step of the nozzle and the sectional valve body in the step 3), all the nozzles required by the sectional valve body are all clamped and pressed by the same clamp at one time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776795.8A CN110681784B (en) | 2019-08-22 | 2019-08-22 | Gas water heater segmented burner nozzle assembly tool and assembly process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776795.8A CN110681784B (en) | 2019-08-22 | 2019-08-22 | Gas water heater segmented burner nozzle assembly tool and assembly process |
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| Publication Number | Publication Date |
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| CN110681784A CN110681784A (en) | 2020-01-14 |
| CN110681784B true CN110681784B (en) | 2024-05-03 |
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| CN108161423A (en) * | 2018-02-07 | 2018-06-15 | 广东万家乐燃气具有限公司 | A kind of assembly machine and gas heater |
| CN208277465U (en) * | 2018-02-12 | 2018-12-25 | 苏州施米特机械有限公司 | Air conditioner rubber pipe double end assembles lock seaming machine |
| CN108544241A (en) * | 2018-06-25 | 2018-09-18 | 东莞理工学院 | A kind of nozzle riveting of lead screw valve and polishing all-in-one machine |
| CN108637677A (en) * | 2018-07-13 | 2018-10-12 | 成都科启新力科技有限公司 | A kind of general nozzle automatic assembling machine |
| CN211135237U (en) * | 2019-08-22 | 2020-07-31 | 广东万家乐燃气具有限公司 | Gas heater segmentation combustor nozzle assembly fixture |
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