CN217123994U - Seamless four-corner welding machine head - Google Patents
Seamless four-corner welding machine head Download PDFInfo
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- CN217123994U CN217123994U CN202121914501.2U CN202121914501U CN217123994U CN 217123994 U CN217123994 U CN 217123994U CN 202121914501 U CN202121914501 U CN 202121914501U CN 217123994 U CN217123994 U CN 217123994U
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Abstract
The utility model provides a reasonable in design just can improve welding quality's seamless four corners welding machine aircraft nose. The device comprises a machine head base, a pressing mechanism, an upper pressing clamp driving mechanism, a pressing clamp propelling mechanism, a heating mechanism and a cutter extruding mechanism, wherein the pressing mechanism, the upper pressing clamp driving mechanism, the pressing clamp propelling mechanism, the heating mechanism and the cutter extruding mechanism are arranged on the machine head base; the pressing mechanism comprises a front pressing clamp and a rear pressing clamp, the front pressing clamp comprises a front upper pressing clamp and a front lower pressing clamp, the front upper pressing clamp and the rear upper pressing clamp are connected into a whole through an upper pressing clamp connecting seat, and a front base plate device and a rear base plate device are respectively arranged on the front upper pressing clamp and the rear upper pressing clamp; the upper pressing clamp driving mechanism drives the front upper pressing clamp to move towards or away from the front lower pressing clamp along the front upper pressing clamp kinematic pair, and the rear upper pressing clamp moves towards or away from the front lower pressing clamp along the front upper pressing clamp kinematic pair; the pressing clamp propelling mechanism drives the rear pressing clamp to move forward and move forward along the rear pressing clamp kinematic pair to move close to or away from the pressing clamp; the heating plate of the heating mechanism is pushed by the heating cylinder to heat and melt the end face of the section.
Description
Technical Field
The utility model relates to a plastic steel welding machine, concretely relates to seamless four corners welding machine aircraft nose belongs to plastic steel machinery technical field.
Background
A plastic-steel door and window welding machine is an important processing device used by door and window processing enterprises in the production of plastic-steel doors and windows, the welding seam of the existing four-corner welding machine is 2mm welding, but along with the continuous improvement of aesthetic appreciation of people, a plurality of PVC sectional materials on the market at present are subjected to film coating or coextrusion to enable the upper surface and the lower surface to become colorful PVC sectional materials, the colorful film on the surface is about 0.1-0.2mm, if seam welding is used, the upper surface and the lower surface after the cleaning is finished become white, and therefore the seamless high-efficiency four-corner welding machine is urgently needed.
The seam cleaning of seamless welding is in a blade shearing type, when the seam is welded at the end, the blade shears the seam on the upper plane and the lower plane, the processing efficiency is high, and the color films are bonded together and do not show a white PVC base material.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reasonable in design just can improve welding quality's seamless four corners welding machine aircraft nose.
The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:
a machine head of a seamless four-corner welding machine comprises a machine head base, and a pressing mechanism, an upper pressing clamp driving mechanism, a pressing clamp propelling mechanism, a heating mechanism and a cutter extruding mechanism which are arranged on the machine head base; wherein
The pressing mechanism comprises a front pressing clamp and a rear pressing clamp, the front pressing clamp comprises a front upper pressing clamp and a front lower pressing clamp, the rear pressing clamp comprises a rear upper pressing clamp and a rear lower pressing clamp, the front upper pressing clamp is connected with the front lower pressing clamp through a front upright post, the rear upper pressing clamp is connected with the rear lower pressing clamp through a rear upright post, the front upper pressing clamp and the rear upper pressing clamp are connected into a whole through an upper pressing clamp connecting seat, and a front base plate device and a rear base plate device are respectively arranged on the front upper pressing clamp and the rear upper pressing clamp;
the upper pressing clamp driving mechanism drives the front upper pressing clamp to move towards or away from the front lower pressing clamp along the front upper pressing clamp kinematic pair, and the rear upper pressing clamp moves towards or away from the front lower pressing clamp along the front upper pressing clamp kinematic pair;
the pressing clamp propelling mechanism drives the rear pressing clamp to move forward and move forward along the rear pressing clamp kinematic pair to move close to or away from the pressing clamp;
the heating plate of the heating mechanism is pushed by the heating cylinder to heat and melt the end face of the section;
the cutter squeezing mechanism comprises a front cutter squeezing pad, a rear cutter squeezing pad and a rear cutter squeezing pad, the front cutter squeezing pad and the front cutter squeezing pad are arranged on the front lower pressing pliers, the rear cutter squeezing pad and the rear cutter squeezing pad are arranged on the rear lower pressing pliers, and the front cutter squeezing pad and the rear cutter squeezing pad are connected into a whole through concave-convex sockets.
According to the preferable scheme of the seamless four-corner welding machine head, the front base plate device and the rear base plate device respectively comprise a fixing seat, a base plate mounting plate, a base plate fixing plate and a base plate left and right adjusting plate, the base plate mounting plate is adjustable in position relative to the fixing seat from top to bottom, the base plate fixing plate is adjustable in position relative to the base plate mounting plate from front to back, and the base plate left and right adjusting plate is adjustable in position relative to the base plate fixing plate from left to right.
The machine head of the seamless four-corner welding machine adopts the preferable scheme, and comprises an upper adjusting component and a lower adjusting component, wherein the upper adjusting component is composed of a base plate lifting shaft and a lifting spring, one end of the base plate lifting shaft is arranged on a fixed seat, the other end of the base plate lifting shaft penetrates through a base plate mounting plate, and the lifting spring is sleeved on the base plate lifting shaft.
The machine head of the seamless four-corner welding machine adopts the preferred scheme, the machine head comprises a front and rear adjusting assembly consisting of a front and rear backing plate shaft and a limit screw, and the front and rear backing plate shaft and the limit screw are arranged between a backing plate mounting plate and a backing plate fixing plate.
According to the preferable scheme of the seamless four-corner welding machine head, the left and right adjusting plates of the base plate are provided with strip holes, and the left and right adjusting plates of the base plate are connected with the base plate fixing plate through adjusting bolts.
According to the preferable scheme of the seamless four-corner welding machine head, the seamless four-corner welding machine head further comprises two casement window pressing cylinders, cylinder bodies of the two casement window pressing cylinders are arranged on the upper pressing clamp connecting seat, and cylinder rods of the casement window pressing cylinders are respectively connected with the front upper pressing clamp and the rear upper pressing clamp.
The seamless four-corner welding machine head is a preferred scheme and further comprises a welding limiting mechanism and a positioning limiting mechanism; the welding limiting mechanism and the positioning limiting mechanism are symmetrically arranged on two sides of the pressing clamp propelling mechanism, the welding limiting mechanism comprises a welding limiting cylinder and a welding limiting shaft, the welding limiting cylinder is vertically arranged relative to the welding plate in-place cylinder, the welding limiting shaft is arranged below the welding limiting cylinder, and the axis of the welding limiting shaft is parallel to the axis of the welding limiting cylinder; the positioning and limiting mechanism comprises a positioning and limiting cylinder and a positioning and limiting shaft, the positioning and limiting cylinder is vertically provided with two sides of the pressing clamp propelling mechanism relative to the welding plate in-place cylinder, the positioning and limiting shaft is arranged below the welding and limiting cylinder, and the axis of the positioning and limiting shaft is parallel to the axis of the welding and limiting cylinder.
According to the preferable scheme of the seamless four-corner welding machine head, the discharging mechanism comprises a discharging cylinder, a material pushing plate and a discharging guide rail pair, the cylinder body end of the discharging cylinder is arranged on the rear upright post, the cylinder rod end of the discharging cylinder is provided with the material pushing plate, and the discharging cylinder pushes the material pushing plate to move back and forth along the discharging guide rail pair.
The utility model has the advantages that:
1. go up preceding pressure pincers, go up back pressure pincers through last pressure pincers connecting seat with last preceding pressure pincers, go up back pressure pincers and be connected to together, guaranteed the coplane of last pressure pincers, go up the pressure pincers jar of sharing, avoided other producers to use two to compress tightly the jar, because of the error of section bar self, the preceding pressure pincers of going up that lead to, back pressure pincers have the difference in height, the shearing defect that causes.
2. The universal base plate device is arranged, welding work of sectional materials such as frames, casement fans and sliding fans of different manufacturers and different specification series is met, particularly, the pressing cylinder of the casement fan presses and holds the rear edge of the Z-shaped fan, and the sectional materials are firm and reliable.
3. The front extrusion cutter pad and the rear extrusion cutter pad concave boss are in concave-convex fit with the pressing pliers, and the rear pressing pliers boss is pushed by the feeding cylinder and inserted below the convex table surface of the front extrusion cutter pad; the boss of the front pressing clamp is inserted into the lower part of the boss surface of the rear extruding cutter, so that the defect of poor coplanarity of the front pressing clamp and the rear pressing clamp caused by downward collapse or upward warping of the pressing clamps is avoided.
4. The positioning limiting cylinder and the welding limiting cylinder are matched with the limiting shaft and the detachable pressure-relief nipper, seamless/seamed manual switching is achieved, the welding seam switching is simple, one four-corner welding is achieved, and welding of two kinds of welding seams is achieved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is an isometric view of a four corner welding machine head according to a selected embodiment of the present invention;
FIG. 2 is a top plan view of a left hand head in accordance with selected embodiments of the present invention;
FIG. 3 is a schematic view of the alternative arrangement of the pressing pliers and the knife pressing pad according to a selected embodiment of the present invention;
FIG. 4 is a cross-sectional view of a press jaw and a shim plate of a selected embodiment of the present invention;
FIG. 5 is an isometric view of a universal shim plate according to selected embodiments of the present invention;
wherein: 1. an upper pressure clamp cylinder, 2 pressure clamp cylinder plates, 3 upper pressure clamp connecting seats, 4 front columns, 5 front upper pressure clamps, 6 pressure clamp kinematic pairs, 7 front backing plate devices, 8 front lower pressure clamps, 9 nose bases, 10 front extrusion cutters, 11 front extrusion cutter pads, 12 rear upper pressure clamp auxiliary cylinders, 13 rear upper pressure clamp kinematic pairs, 14 rear columns, 15 rear pressure clamp kinematic pairs, 16 worker feeding cylinders, 17 welding limiting cylinders, 18 rear upper pressure clamps, 19 discharging cylinders, 20 rear backing plate devices, 21 push plates, 22 rear lower pressure clamps, 23 rear extrusion cutters, 24 rear extrusion cutter pads, 25 positioning devices, 26 flat fan pressing cylinders, 27 heating plates, 28 heating plate feeding cylinders, 29 welding plate in-place cylinders, 30 positioning limiting cylinders, 31 positioning limiting shafts, 32 welding limiting shafts, 33 lifting shafts, 34 limiting backing plates, 35 mounting plates, 36. a front and rear axle of the backing plate, 37 left and right adjusting plates of the backing plate, 38 a fixing plate of the backing plate, 39 a lifting spring and 40 a fixed seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and 2, a seamless four-corner welding machine head comprises a head base 9, and a pressing mechanism, an upper pressing clamp driving mechanism, a pressing clamp propelling mechanism, a heating mechanism, a cutter extruding mechanism and a discharging mechanism which are arranged on the head base 9;
the pressing mechanism comprises a front pressing clamp and a rear pressing clamp, the front pressing clamp comprises a front upper pressing clamp 5 and a front lower pressing clamp 8, the rear pressing clamp comprises a rear upper pressing clamp 18 and a rear lower pressing clamp 22, the front upper pressing clamp 5 is connected with the front lower pressing clamp 8 through a front upright post 4, the rear upper pressing clamp 18 is connected with the rear lower pressing clamp 22 through a rear upright post 14, the front upper pressing clamp 5 and the rear upper pressing clamp 18 are connected into a whole through an upper pressing clamp connecting seat 3, and a front base plate device 7 and a rear base plate device 20 are respectively arranged on the front upper pressing clamp 5 and the rear upper pressing clamp 18;
the upper pressing tong driving mechanism is an upper pressing tong cylinder 1, a cylinder body of the upper pressing tong cylinder is arranged on a pressing tong cylinder plate 2, the pressing tong cylinder plate 2 is arranged on a front upright post 4, and a cylinder rod of the upper pressing tong cylinder is arranged on an upper pressing tong connecting seat 3 and is used for driving a front upper pressing tong 5 to approach or keep away from a front lower pressing tong 8 along a front upper pressing tong kinematic pair 6 and driving a rear upper pressing tong 18 to approach or keep away from the front lower pressing tong 8 along the front upper pressing tong kinematic pair 6;
the pressing clamp propelling mechanism is a working feed cylinder 16 and can drive the rear lower pressing clamp 22 to move towards or away from the front lower pressing clamp 8 along a rear lower pressing clamp motion pair 42;
a heating plate 27 of the heating mechanism is pushed by a heating cylinder 28 to heat and melt the end surface of the section, and a welding plate in-place cylinder 29 is arranged beside the heating mechanism;
the discharging mechanism comprises a discharging cylinder 19, a material pushing plate 21 and a discharging guide rail pair 41, wherein the cylinder body end of the discharging cylinder 19 is arranged on the rear upright post 14, the cylinder rod end of the discharging cylinder 19 is provided with the material pushing plate 21, and the discharging cylinder 19 pushes the material pushing plate 21 to move back and forth along the discharging guide rail pair 41.
As shown in fig. 3 and 4, the knife extruding mechanism comprises a front knife extruding mechanism 10, a front knife extruding pad 11, a rear knife extruding mechanism 23 and a rear knife extruding pad 24, the front knife extruding mechanism 10 and the front knife extruding pad 11 are arranged on the front lower pressing pliers 8, the rear knife extruding mechanism 23 and the rear knife extruding pad 24 are arranged on the rear lower pressing pliers 22, the front knife extruding pad 11 and the rear knife extruding pad 24 are connected into a whole through concave-convex sockets, the coplanarity of the knife extruding mechanism is guaranteed, and the flatness of seamless shearing is improved.
Referring to fig. 5, each of the front and rear cushion devices 7 and 20 includes a fixing base 40, a cushion mounting plate 35, a cushion fixing plate 38, and a cushion left and right adjusting plate 37, wherein the cushion mounting plate 35 is adjustable in position up and down with respect to the fixing base 40, the cushion fixing plate 38 is adjustable in position forward and backward with respect to the cushion mounting plate 35, and the cushion left and right adjusting plate 37 is adjustable in position left and right with respect to the cushion fixing plate 38.
In this embodiment, the upper and lower adjusting part that backing plate lift axle 33 and lift spring 39 constitute, backing plate lift axle 33 one end set up on fixing base 40, and the other end passes backing plate mounting panel 35, and the cover is equipped with lift spring 39 on the backing plate lift axle 33, has realized the adjustment of backing plate mounting panel 35 for the upper and lower position of fixing base 40.
In this embodiment, the pad front-rear shaft 36 and the limit screw 34 form a front-rear adjustment assembly, and the pad front-rear shaft 36 and the limit screw 34 are disposed between the pad mounting plate 35 and the pad fixing plate 38, so that the front-rear position adjustment of the pad fixing plate 38 relative to the pad mounting plate 35 is realized.
In this embodiment, the pad plate left and right adjusting plate 37 is provided with a long hole, and the pad plate left and right adjusting plate 37 and the pad plate fixing plate 38 are connected by an adjusting bolt, so that the left and right positions of the pad plate left and right adjusting plate 37 relative to the pad plate fixing plate 38 are adjusted.
Referring to fig. 1 and 2, the embodiment further includes two casement pressing cylinders 26, the cylinder bodies of the two casement pressing cylinders 26 are both disposed on the upper pressing clamp connecting seat 3, and the cylinder rods of the casement pressing cylinders 26 are respectively connected to the front upper pressing clamp 5 and the rear upper pressing clamp 18.
Referring to fig. 2, the present embodiment further includes a welding limiting mechanism and a positioning limiting mechanism; the welding limiting mechanism and the positioning limiting mechanism are symmetrically arranged on two sides of the pressing clamp pushing mechanism, the welding limiting mechanism comprises a welding limiting cylinder 17 and a welding limiting shaft 32, the welding limiting cylinder 17 is vertically arranged relative to the welding plate in-place cylinder 29, the welding limiting shaft 32 is arranged below the welding limiting cylinder 17, and the axis of the welding limiting shaft 32 is parallel to the axis of the welding limiting cylinder 17; the positioning and limiting mechanism comprises a positioning and limiting cylinder 30 and a positioning and limiting shaft 31, the positioning and limiting cylinder 30 is vertically arranged on two sides of the pressing clamp propelling mechanism relative to the welding plate in-place cylinder 29, the positioning and limiting shaft 31 is arranged below the welding and limiting cylinder 17, and the axis of the positioning and limiting shaft 31 is parallel to the axis of the welding and limiting cylinder 17.
When seamless welding is carried out at the end, the feeding cylinder 16 drives the rear lower pressing clamp 22 to be extruded to the end, the rear lower pressing clamp contacts with the step of the front lower pressing clamp, the feeding of the workpiece is stopped, the final gap between the front extrusion cutter 10 and the rear extrusion cutter 23 is 0, if the seam welding is carried out, the gap between the front extrusion cutter 10 and the rear extrusion cutter 23 is 2mm, the feeding cylinder 16 cannot be stopped at a certain position in the middle, the feeding cylinder 16 can only be realized by plugging into a mechanical hard limit, the welding limit mechanism and the positioning limit mechanism realize limit, further, the seamless/seam manual switching is realized, the seam switching is simple, one four-corner welding is realized, and the welding of two kinds of seams is realized.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a seamless four corners welding machine aircraft nose which characterized in that: comprises a machine head base, a pressing mechanism, an upper pressing clamp driving mechanism, a pressing clamp propelling mechanism, a heating mechanism and a cutter extruding mechanism, wherein the pressing mechanism, the upper pressing clamp driving mechanism, the pressing clamp propelling mechanism, the heating mechanism and the cutter extruding mechanism are arranged on the machine head base; wherein
The pressing mechanism comprises a front pressing clamp and a rear pressing clamp, the front pressing clamp comprises a front upper pressing clamp (5) and a front lower pressing clamp (8), the rear pressing clamp comprises a rear upper pressing clamp (18) and a rear lower pressing clamp (22), the front upper pressing clamp (5) is connected with the front lower pressing clamp (8) through a front upright post (4), the rear upper pressing clamp (18) is connected with the rear lower pressing clamp (22) through a rear upright post (14), the front upper pressing clamp (5) and the rear upper pressing clamp (18) are connected into a whole through an upper pressing clamp connecting seat (3), and a front cushion plate device (7) and a rear cushion plate device (20) are respectively arranged on the front upper pressing clamp (5) and the rear upper pressing clamp (18);
the upper pressing clamp driving mechanism drives the front upper pressing clamp (5) to move towards or away from the front lower pressing clamp (8) along the front upper pressing clamp kinematic pair (6) and simultaneously drives the rear upper pressing clamp (18) to move towards or away from the front lower pressing clamp (8) along the front upper pressing clamp kinematic pair (6);
the pressing clamp propelling mechanism drives the rear lower pressing clamp (22) to move towards or away from the front lower pressing clamp (8) along the rear lower pressing clamp kinematic pair (42);
a heating plate (27) of the heating mechanism is pushed by a heating cylinder (28) to heat and melt the end face of the section;
the cutter squeezing mechanism comprises a front cutter squeezing (10), a front cutter squeezing pad (11), a rear cutter squeezing (23) and a rear cutter squeezing pad (24), the front cutter squeezing (10) and the front cutter squeezing pad (11) are arranged on the front lower pressing pliers (8), the rear cutter squeezing (23) and the rear cutter squeezing pad (24) are arranged on the rear lower pressing pliers (22), and the front cutter squeezing pad (11) and the rear cutter squeezing pad (24) are connected into a whole through concave-convex sockets.
2. The seamless four corner welding machine head of claim 1, characterized in that: preceding backing plate device (7) and back backing plate device (20) are all including fixing base (40), backing plate mounting panel (35), backing plate fixed plate (38) and backing plate control adjusting plate (37), and position is adjustable about backing plate mounting panel (35) for fixing base (40), and position is adjustable around backing plate fixed plate (38) relative backing plate mounting panel (35), and position is adjustable about adjusting plate (37) is for backing plate fixed plate (38) about the backing plate.
3. The seamless four corner welding machine head of claim 2, characterized in that: the device comprises an upper adjusting component and a lower adjusting component, wherein the upper adjusting component and the lower adjusting component are composed of a base plate lifting shaft (33) and a lifting spring (39), one end of the base plate lifting shaft (33) is arranged on a fixed seat (40), the other end of the base plate lifting shaft (33) penetrates through a base plate mounting plate (35), and the lifting spring (39) is sleeved on the base plate lifting shaft (33).
4. The seamless four corner welding machine head of claim 2, characterized in that: the adjusting device comprises a front and rear adjusting assembly consisting of a front and rear backing plate shaft (36) and a limit screw (34), wherein the front and rear backing plate shaft (36) and the limit screw (34) are arranged between a backing plate mounting plate (35) and a backing plate fixing plate (38).
5. The seamless four corner welding machine head of claim 2, characterized in that: the left and right adjusting plate (37) of the base plate is provided with a long hole, and the left and right adjusting plate (37) of the base plate is connected with the fixing plate (38) of the base plate through an adjusting bolt.
6. The seamless four corner welding machine head of claim 1, characterized in that: the pressing device further comprises two casement window pressing cylinders (26), the cylinder bodies of the two casement window pressing cylinders (26) are arranged on the upper pressing clamp connecting seat (3), and cylinder rods of the casement window pressing cylinders (26) are respectively connected with the front upper pressing clamp (5) and the rear upper pressing clamp (18).
7. The seamless four corner welding machine head of claim 1, characterized in that: the welding device also comprises a welding limiting mechanism and a positioning limiting mechanism; the welding limiting mechanism and the positioning limiting mechanism are symmetrically arranged on two sides of the pressing clamp pushing mechanism, the welding limiting mechanism comprises a welding limiting cylinder (17) and a welding limiting shaft (32), the welding limiting cylinder (17) is vertically arranged relative to the welding plate in-place cylinder (29), the welding limiting shaft (32) is arranged below the welding limiting cylinder (17), and the axis of the welding limiting shaft (32) is parallel to the axis of the welding limiting cylinder (17); the positioning and limiting mechanism comprises a positioning and limiting cylinder (30) and a positioning and limiting shaft (31), the positioning and limiting cylinder (30) is vertically provided with two sides of the pressing clamp propelling mechanism relative to the welding plate in-place cylinder (29), the positioning and limiting shaft (31) is arranged below the welding and limiting cylinder (17), and the axis of the positioning and limiting shaft (31) is parallel to the axis of the welding and limiting cylinder (17).
8. The seamless four corner welding machine head of claim 1, characterized in that: the discharging mechanism comprises a discharging cylinder (19), a material pushing plate (21) and a discharging guide rail pair (41), wherein the cylinder body end of the discharging cylinder (19) is arranged on the rear upright post (14), the cylinder rod end of the discharging cylinder (19) is provided with the material pushing plate (21), and the discharging cylinder (19) pushes the material pushing plate (21) to move back and forth along the discharging guide rail pair (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121914501.2U CN217123994U (en) | 2021-08-16 | 2021-08-16 | Seamless four-corner welding machine head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121914501.2U CN217123994U (en) | 2021-08-16 | 2021-08-16 | Seamless four-corner welding machine head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217123994U true CN217123994U (en) | 2022-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121914501.2U Active CN217123994U (en) | 2021-08-16 | 2021-08-16 | Seamless four-corner welding machine head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217123994U (en) |
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2021
- 2021-08-16 CN CN202121914501.2U patent/CN217123994U/en active Active
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