CN213915855U - Steel wire heating and conveying device and spring manufacturing equipment - Google Patents
Steel wire heating and conveying device and spring manufacturing equipment Download PDFInfo
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- CN213915855U CN213915855U CN202021744116.3U CN202021744116U CN213915855U CN 213915855 U CN213915855 U CN 213915855U CN 202021744116 U CN202021744116 U CN 202021744116U CN 213915855 U CN213915855 U CN 213915855U
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Abstract
The utility model discloses a steel wire heating conveyor and spring manufacture equipment, steel wire heating conveyor includes non-contact heater and send line mechanism, non-contact heater is used for heating the steel wire with non-contact's mode, send line mechanism be used for carry by steel wire after the non-contact heater heating. The utility model discloses a steel wire heating conveyor heats the back through non-contact heater to the steel wire, in the completion to the heating process of steel wire, because the steel wire does not contact with the heater, can not produce the loss to the steel wire.
Description
Technical Field
The utility model relates to a technical field is made to the spring, specifically relates to a steel wire heating conveyor and have this steel wire heating conveyor's spring manufacture equipment.
Background
Springs used in the manufacture of mattresses, sofa cushions and the like are typically made of steel wire. In the related art, in the process of manufacturing the spring, the steel wire is sent from the material frame to the electrode heating device to be heated, and the heated steel wire is sent to the coil spring mechanism by the conveying device, so that the individual spring is manufactured, wherein the electrode contact of the electrode heating device is tightly attached to the steel wire through the pressing device, and the steel wire is heated by electrifying the electrode contact. Because the electrode directly contacts with the steel wire, consequently lead to electrode and steel wire wearing and tearing, need often change the electrode, the heating effect is poor to influence spring quality.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent.
Therefore, one embodiment of the present invention provides a steel wire heating and conveying device.
Another embodiment of the present invention provides a spring manufacturing apparatus.
According to the utility model discloses a steel wire heating conveyor of embodiment of first aspect includes: the wire feeding device comprises a non-contact heater and a wire feeding mechanism, wherein the non-contact heater is used for heating a steel wire in a non-contact mode, and the wire feeding mechanism is used for conveying the steel wire heated by the non-contact heater.
According to the utility model discloses steel wire heating conveyor heats the back through non-contact heater to the steel wire, in the completion to the heating process of steel wire, because the steel wire does not contact with the heater, consequently, can not produce the loss to the steel wire, non-contact heater is one kind or several kinds among infrared heater, electromagnetic heater or other firing equipment.
In some embodiments, the non-contact heater is an electromagnetic induction heater and comprises at least one electromagnetic induction heating coil for heating a steel wire passing therethrough.
In some embodiments, the electromagnetic induction heating coil is plural and arranged at a distance from each other.
In some embodiments, the wire heating and conveying device further comprises a wire temperature detector for detecting the temperature of the heated wire, and a controller connected to the temperature detector for adjusting the voltage and/or current supplied to the non-contact heater according to the wire temperature detected by the temperature detector.
In some embodiments, the wire feeding mechanism includes a first wire feeding wheel, a second wire feeding wheel, and a third wire feeding wheel, the first wire feeding wheel and the second wire feeding wheel being disposed side by side, the third wire feeding wheel being disposed opposite to the first wire feeding wheel and the second wire feeding wheel in a radial direction thereof, the first wire feeding wheel being movable relative to the third wire feeding wheel in the radial direction to clamp and release the first steel wire, the second wire feeding wheel being accessible and movable in the radial direction away from the third wire feeding wheel to clamp and release the second steel wire.
In some embodiments, the steel wire heating and conveying device further comprises a front guide block and a rear guide block, the front guide block is arranged on the outgoing line sides of the first wire feeding wheel and the second wire feeding wheel and is provided with a first front guide hole for guiding a first steel wire and a second front guide hole for guiding a second steel wire, the rear guide block is arranged on the incoming line sides of the first wire feeding wheel and the second wire feeding wheel and is provided with a first rear guide hole for guiding the first steel wire and a second rear guide hole for guiding the second steel wire,
the first wire feeding wheel is provided with a first circumferential wire groove; the second wire feeding wheel is provided with a second circumferential wire groove, the third wire feeding wheel is provided with a third circumferential wire groove corresponding to the first circumferential wire groove and a fourth circumferential wire groove corresponding to the second circumferential wire groove,
when the first wire feeding wheel is close to the third wire feeding wheel, the first steel wire is clamped in a wire groove formed by the first circumferential wire groove and the third circumferential wire groove, and when the second wire feeding wheel is close to the third wire feeding wheel, the second steel wire is clamped in a wire groove formed by the second circumferential wire groove and the fourth circumferential wire groove.
According to the utility model discloses a spring manufacture equipment of the embodiment of second aspect include spring coiling mechanism and any above-mentioned embodiment the wire heat conveyor, spring coiling mechanism be used for with the wire coiling of wire heat conveyor transport becomes the spring.
According to the utility model discloses a spring manufacture equipment, its steel wire heating device pass electromagnetic induction heating coil through electromagnetic induction heating coil heating and do not with the steel wire of electromagnetic induction heating coil contact, in the heating process of completion to the steel wire, because the steel wire does not take place the contact with electromagnetic induction heating coil, consequently, can not produce the loss to the steel wire, simultaneously because the steel wire passes electromagnetic induction heating coil from electromagnetic induction heating coil inside, the steel wire is heated evenly.
Drawings
Fig. 1 is a schematic view of a spring manufacturing apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic view of a spring manufacturing apparatus according to an embodiment of the present invention, in which a wire feeding wheel is removed.
Fig. 3 is a schematic view of the first wire feeding wheel and the third wire feeding wheel of the wire heating and conveying device in fig. 2 clamping and conveying the first wire.
FIG. 4 is a schematic view of the second wire feeding wheel and the third wire feeding wheel of the wire heating and conveying device in FIG. 2 gripping and conveying the second wire.
Reference numerals:
a steel wire heating and conveying device 1, a non-contact heater 11, a wire feeding mechanism 12, a first wire feeding wheel 121, a first circumferential wire groove 1211, a second wire feeding wheel 122, a second circumferential wire groove 1221, a third wire feeding wheel 123, a third circumferential wire groove 1231, a fourth circumferential wire groove 1232, a steel wire 13, a first steel wire 131, a second steel wire 132, a steel wire temperature detector 14, a front guide block 15, a rear guide block 16, a first rear guide hole 161, a second rear guide hole 162,
the spring coiling mechanism 2, a fixed knife 21, a movable knife 22, a forming wheel 23 and a pitch rod 24.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1 to 4, a steel wire heating and conveying device 1 according to an embodiment of the present invention includes a non-contact heater 11 and a wire feeding mechanism 12, the non-contact heater 11 is used for heating a steel wire 13 in a non-contact manner, and the wire feeding mechanism 12 is used for conveying the steel wire 13 heated by the non-contact heater 11.
According to the utility model discloses steel wire heating conveyor 1 heats back to steel wire 13 through non-contact heater 11, in the completion to the heating process of steel wire 13, because steel wire 13 not with the heater contact, consequently, can not produce the loss to steel wire 13, non-contact heater 11 is one kind or several kinds among infrared heater, electromagnetic heater or other firing equipment.
In some embodiments, the non-contact heater 11 is an electromagnetic induction heater and includes at least one electromagnetic induction heating coil (not shown) for heating the steel wire 13 passing therethrough.
According to the utility model discloses steel wire heating conveyor 1, when heating steel wire 13 through electromagnetic induction heating coil, steel wire 13 passes electromagnetic induction heating coil because steel wire 13 does not contact with electromagnetic induction heating coil, consequently can not produce the loss to steel wire 13, simultaneously because steel wire 13 passes electromagnetic induction heating coil from electromagnetic induction heating coil inside, steel wire 13 is heated evenly.
In some embodiments, the electromagnetic induction heating coil is plural and arranged at a distance from each other.
According to the utility model discloses steel wire heating conveyor 1, according to the in-service use in-process, the quantity of electromagnetic induction heating coil is adjusted to the transport length of steel wire 13 and 13 transport speed of steel wire, and electromagnetic induction heating coil quantity is more, and the heating effect is better.
In some embodiments, the wire heating and conveying apparatus 1 further comprises a wire temperature detector 14 and a controller (not shown), the wire temperature detector 14 is used for detecting the temperature of the heated wire 13, and the controller is connected with the temperature detector to adjust the voltage and/or current supplied to the non-contact heater 11 according to the temperature of the wire 13 detected by the temperature detector.
According to the utility model discloses steel wire heating conveyor 1 carries out temperature detection to steel wire 13 after heating through steel wire thermodetector 14, when the temperature that detects steel wire 13 is not in predetermined temperature threshold, adjusts electromagnetic induction heating coil's electric current or voltage control electromagnetic heating induction coil's temperature through the controller, and then with the temperature control of steel wire 13 in predetermined temperature threshold.
In some embodiments, wire feeding mechanism 12 includes first wire feeding wheel 121, second wire feeding wheel 122, and third wire feeding wheel 123, first wire feeding wheel 121 and second wire feeding wheel 122 being disposed side by side, third wire feeding wheel 123 being disposed opposite first wire feeding wheel 121 and second wire feeding wheel 122 in a radial direction thereof, first wire feeding wheel 121 being movable in a radial direction relative to third wire feeding wheel 123 to grip and release first wire 131, second wire feeding wheel 122 being accessible in a radial direction and movable away from third wire feeding wheel 123 to grip and release second wire 132.
According to the steel wire heating and conveying device 1 of the embodiment of the invention, the first wire feeding wheel 121 and the second wire feeding wheel 122 are arranged opposite to the third wire feeding wheel 123, and the first wire feeding wheel 121 and the third wire feeding wheel 123 can be far away from and close to each other along the radial direction of the third wire feeding wheel, the first steel wire 131 can be clamped by the cooperation of the first wire feeding wheel 121 and the third wire feeding wheel 123, the second wire feeding wheel 122 can be far away from and close to the third wire feeding wheel 123, the second steel wire 132 can be clamped by the cooperation of the second wire feeding wheel 122 and the third wire feeding wheel 123, when the first steel wire 131 needs to be conveyed, the first wire feeding wheel 121 and the third wire feeding wheel 123 are adjusted to be close to and clamp the first steel wire 131, the clamped first steel wire 131 can move along with the rolling of the first wire feeding wheel 121 and the third wire feeding wheel 123, and when the second steel wire 132 needs to be conveyed, the second wire feeding wheel 122 and the third wire feeding wheel 123 are adjusted to be close to and clamp the second steel wire 132, the clamped second wire 132 can be moved by rolling of the second wire feeding wheel 122 and the third wire feeding wheel 123, and switching and conveyance of the first wire 131 and the second wire 132 are realized.
As shown in fig. 1 and 2, in some embodiments, the wire heating and conveying device 1 further includes a front guide block 15 and a rear guide block 16, the front guide block 15 is provided on the outgoing line side of the first wire feeding wheel 121 and the second wire feeding wheel 122 (the front side of the first wire feeding wheel 121 and the second wire feeding wheel 122 as shown in fig. 1), and the front guide block 15 has a first front guide hole (not shown) for guiding the first wire 131 and a second front guide hole (not shown) for guiding the second wire 132.
The rear guide block 16 is provided on the wire-feeding side of the first wire feeding wheel 121 and the second wire feeding wheel 122 (the rear side of the first wire feeding wheel 121 and the second wire feeding wheel 122 as shown in fig. 1) and has a first rear guide hole 161 for guiding the first wire 131 and a second rear guide hole 162 for guiding the second wire 132,
as shown in fig. 3 and 4, the first wire feeding wheel 121 has a first circumferential wire slot 1211; second wire feeding wheel 122 has second circumferential wire groove 1221, and third wire feeding wheel 123 has third circumferential wire groove 1231 corresponding to first circumferential wire groove 1211 and fourth circumferential wire groove 1232 corresponding to second circumferential wire groove 1221.
When the first wire feeding wheel 121 and the third wire feeding wheel 123 approach each other, the first wire 131 is held in a wire groove formed by the first circumferential wire groove 1211 and the third circumferential wire groove 1231, and when the second wire feeding wheel 122 and the third wire feeding wheel 123 approach each other, the second wire 132 is held in a wire groove formed by the second circumferential wire groove 1221 and the fourth circumferential wire groove 1232.
According to the utility model discloses steel wire heating conveyor 1, first steel wire 131 is through the first preceding guiding hole on first back guiding hole 161 on the back guide block 16 and the preceding guide block 15, can carry out certain support to first steel wire 131, and can guide first steel wire 131 direction of delivery, make first steel wire 131 can be located between first circumferential wire casing 1211 and the third circumferential line groove, second steel wire 132 is through the second preceding guiding hole on second back guiding hole 162 and the preceding guide block 15 on the back guide block 16, can carry out certain support to second steel wire 132, and can guide second steel wire 132 direction of delivery, make second steel wire 132 can be located between second circumferential wire casing 1221 and the fourth circumferential line groove.
When the first wire feeding wheel 121 and the third wire feeding wheel 123 approach each other, the first circumferential wire groove 1211 and the third circumferential wire groove 1231 can clamp the first wire 131 and convey the first wire 131, and the first wire 131 can be prevented from being displaced while clamping the first wire 131 due to the arrangement of the first circumferential wire groove 1211 and the third circumferential wire groove 1231, and the first wire 131 can be prevented from being deformed, and when the second wire feeding wheel 122 and the third wire feeding wheel 123 approach each other, the second circumferential wire groove 1221 and the fourth circumferential wire groove 1232 can clamp the second wire 132 and convey the second wire 132, and the second circumferential wire groove 1221 and the fourth circumferential wire groove 1232 can clamp the first wire 131 while preventing the second wire 132 from being displaced and prevent the second wire 132 from being deformed.
In other embodiments, knurling or other processing for increasing the friction of the circumferential surfaces of the first wire feeding wheel 121, the second wire feeding wheel 122 and the third wire feeding wheel 123 can be provided on the first wire feeding wheel 121, the second wire feeding wheel 122 and the third wire feeding wheel 123 instead of the first circumferential wire groove, the second circumferential wire groove, the third circumferential wire groove 1231 and the fourth circumferential wire groove 1232.
According to another embodiment of the present invention, a spring manufacturing apparatus comprises a coil spring mechanism 2 and a steel wire heating and conveying device 1 according to the embodiment of the present invention, wherein the first rear guiding hole 161 is used for winding the steel wire 13 conveyed by the steel wire heating and conveying device 1 into a spring.
According to the utility model discloses a spring manufacture equipment, steel wire 13 pass electromagnetic induction heating coil's heating coil center and do not contact with electromagnetic induction heating coil, in the heating process of completion to steel wire 13, because steel wire 13 does not take place the contact with electromagnetic induction heating coil, consequently, can not produce the loss to steel wire 13, simultaneously because steel wire 13 passes electromagnetic induction heating coil from electromagnetic induction heating coil inside, steel wire 13 is heated evenly.
Some specific exemplary spring manufacturing apparatuses according to the present invention are described below with reference to the accompanying drawings.
As shown in fig. 1-4, the spring manufacturing equipment according to the embodiment of the present invention includes a spring coiling mechanism 2 and a wire heating and conveying device 1, the spring coiling mechanism 2 is arranged at the front end of the wire heating and conveying device 1, and the wire heating and conveying device 1 is the wire heating and conveying device 1 according to the embodiment of the present invention.
According to the utility model discloses steel wire heating conveyor 1 includes non-contact heater 11, send line mechanism 12, steel wire 13, steel wire thermodetector 14, a controller, preceding guide block 15, back guide block 16, as shown in FIG. 1, steel wire 13 passes non-contact heater 11 by the back in proper order forward, back guide block 16, send line mechanism 12 and preceding guide block 15 to being established at the wind spring mechanism 2 completion coil spring in preceding guide block 15 the place ahead, steel wire thermodetector 14 establishes steel wire 13 one side between non-contact heater 11 and back guide block 16, the controller is connected with non-contact heater 11 and steel wire thermodetector 14.
In the present embodiment, the non-contact heater 11 is an electromagnetic induction heating coil.
The front guide block 15 is provided with a first front guide hole and a second front guide hole which are arranged at intervals along the left-right direction, the first front guide hole is positioned at the left side of the second front guide hole, the rear guide block 16 is provided with a first rear guide hole 161 and a second rear guide hole 162 which are arranged at intervals along the left-right direction, and the first rear guide hole 161 is positioned at the left side of the second rear guide hole 162.
The rear end of preceding guide block 15 is equipped with two along the relative indent structures of upper and lower direction, and the indent structure runs through both ends about preceding guide block 15, and the front end of back guide block 16 is equipped with two along the relative indent structures of upper and lower direction, and the indent structure runs through both ends about back guide block 16, and the indent structure on preceding guide block 15 is relative in the front-back direction with the indent structure of 16 on the back guide block.
A first circumferential wire groove 1211 is formed on the outer circumferential side of the first wire feeding wheel 121, a second circumferential wire groove 1221 is formed on the outer circumferential side of the second wire feeding wheel 122, a third circumferential wire groove 1231 and a fourth circumferential wire groove 1232 are formed on the outer circumferential side of the third wire feeding wheel 123 at intervals in the axial direction of the third wire feeding wheel 123, the first circumferential wire groove 1211 and the third circumferential wire groove 1231 are opposite, and the second circumferential wire groove 1221 and the fourth circumferential wire groove 1232 are opposite.
The steel wire 13 includes a first steel wire 131 and a second steel wire 132 arranged at an interval in the left-right direction, the first steel wire 131 is located on the left side of the second steel wire 132, the first steel wire 131 sequentially passes through a first rear guide hole 161 on the rear guide block 16, a first circumferential wire groove 1211 of the first wire feeding wheel 121, a third circumferential wire groove 1231 of the third wire feeding wheel 123, and a first front guide hole on the front guide block 15 in the front-rear direction, and the second steel wire 132 sequentially passes through a second rear guide hole 162 on the rear guide block 16, a second circumferential wire groove 1221 of the second wire feeding wheel 122, a fourth circumferential wire groove 1232 of the third wire feeding wheel 123, and a first front guide hole on the front guide block 15 in the front-rear direction.
An electromagnetic induction heating coil is arranged on the first steel wire 131, the first steel wire 131 penetrates through the coil center of the electromagnetic induction heating coil, and a steel wire temperature detector 14 is arranged between the electromagnetic induction heating coil on the first steel wire 131 and the rear guide block 16.
An electromagnetic induction heating coil is provided on the second steel wire 132, the second steel wire 132 passes through the center of the electromagnetic induction heating coil, and a wire temperature detector 14 is provided between the electromagnetic induction heating coil on the second steel wire 132 and the rear guide block 16.
The spring coiling mechanism 2 comprises a fixed cutter 21, a movable cutter 22, a forming wheel 23 and a pitch rod 24, wherein the fixed cutter 21 is installed on the front side of the front guide block 15, a through hole opposite to the first front guide hole and the second front guide hole is formed in the fixed cutter 21, the movable cutter 22 is installed at the upper end of the front side of the fixed cutter 21, the pitch rod 24 and the forming wheel 23 are arranged at intervals with the fixed cutter 21 along the front-back direction, and the pitch rod 24 and the forming wheel 23 are opposite to each other in the up-down direction.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (7)
1. A steel wire heating and conveying device is characterized by comprising: the wire feeding device comprises a non-contact heater and a wire feeding mechanism, wherein the non-contact heater is used for heating a steel wire in a non-contact mode, and the wire feeding mechanism is used for conveying the steel wire heated by the non-contact heater.
2. The wire heating conveyor according to claim 1, wherein the non-contact heater is an electromagnetic induction heater and comprises at least one electromagnetic induction heating coil for heating the wire passing therethrough.
3. The wire heating conveyor according to claim 2, wherein the electromagnetic induction heating coil is plural and arranged at a distance from each other.
4. The wire heating and conveying device according to claim 1, further comprising a wire temperature detector for detecting the temperature of the heated wire, and a controller connected to the temperature detector to adjust the voltage and/or current supplied to the non-contact heater according to the wire temperature detected by the temperature detector.
5. The steel wire heating and conveying device according to any one of claims 1 to 4, wherein the wire feeding mechanism includes a first wire feeding wheel, a second wire feeding wheel, and a third wire feeding wheel, the first wire feeding wheel and the second wire feeding wheel being disposed side by side, the third wire feeding wheel being disposed opposite to the first wire feeding wheel and the second wire feeding wheel in a radial direction thereof, the first wire feeding wheel being movable relative to the third wire feeding wheel in the radial direction to clamp and release the first steel wire, the second wire feeding wheel being accessible in the radial direction and movable away from the third wire feeding wheel to clamp and release the second steel wire.
6. The steel wire heating and conveying device according to claim 5, further comprising a front guide block and a rear guide block, the front guide block being provided on the outgoing side of the first wire feeding wheel and the second wire feeding wheel and having a first front guide hole for guiding the first steel wire and a second front guide hole for guiding the second steel wire, the rear guide block being provided on the incoming side of the first wire feeding wheel and the second wire feeding wheel and having a first rear guide hole for guiding the first steel wire and a second rear guide hole for guiding the second steel wire,
the first wire feeding wheel is provided with a first circumferential wire groove; the second wire feeding wheel is provided with a second circumferential wire groove, the third wire feeding wheel is provided with a third circumferential wire groove corresponding to the first circumferential wire groove and a fourth circumferential wire groove corresponding to the second circumferential wire groove,
when the first wire feeding wheel is close to the third wire feeding wheel, the first steel wire is clamped in a wire groove formed by the first circumferential wire groove and the third circumferential wire groove, and when the second wire feeding wheel is close to the third wire feeding wheel, the second steel wire is clamped in a wire groove formed by the second circumferential wire groove and the fourth circumferential wire groove.
7. A spring manufacturing apparatus comprising a coil spring mechanism for winding a wire fed by a wire heating and feeding device into a spring, and the wire heating and feeding device according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021744116.3U CN213915855U (en) | 2020-08-19 | 2020-08-19 | Steel wire heating and conveying device and spring manufacturing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021744116.3U CN213915855U (en) | 2020-08-19 | 2020-08-19 | Steel wire heating and conveying device and spring manufacturing equipment |
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| Publication Number | Publication Date |
|---|---|
| CN213915855U true CN213915855U (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021744116.3U Active CN213915855U (en) | 2020-08-19 | 2020-08-19 | Steel wire heating and conveying device and spring manufacturing equipment |
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| Country | Link |
|---|---|
| CN (1) | CN213915855U (en) |
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2020
- 2020-08-19 CN CN202021744116.3U patent/CN213915855U/en active Active
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