CN202137486U - High and low speed switching mechanism for backflow brazing furnace - Google Patents
High and low speed switching mechanism for backflow brazing furnace Download PDFInfo
- Publication number
- CN202137486U CN202137486U CN201120168748U CN201120168748U CN202137486U CN 202137486 U CN202137486 U CN 202137486U CN 201120168748 U CN201120168748 U CN 201120168748U CN 201120168748 U CN201120168748 U CN 201120168748U CN 202137486 U CN202137486 U CN 202137486U
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- China
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- switching mechanism
- low speed
- speed switching
- driving shaft
- guipure
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Abstract
The utility model relates to a high and low speed switching mechanism for a backflow brazing furnace, which comprises a framework (1), a mesh tape shaft (2) and a driving shaft (7). The mesh tape shaft (2) and the driving shaft (7) are arranged on the framework (1), a mesh tape sprocket (3) is disposed on the mesh tape shaft (2), a first overrunning clutch (4A) and a second overrunning clutch (4B) which are opposite to each other are arranged on the driving shaft (7), a driving sprocket (10) is further disposed on the driving shaft (7), a high-speed motor (9) and a low-speed motor (13) which are opposite to each other are further disposed on the framework (1), and an overload protecting clutch (14) is disposed at the end of the low-speed motor (13). Compared with the prior art, the high and low speed switching mechanism for the backflow brazing furnace has the advantages of compact structure, stability and reliability in operation, capability of realizing batch processing and the like.
Description
Technical field
The utility model relates to reflow soldering and uses parts, especially relates to a kind of reflow soldering with high low speed switching mechanism.
Background technology
Reflow soldering is a kind of welding equipment that is used in the SMT industry.It can provide automatic and stable heating environment, makes solder(ing) paste melted by heat in the stove hall, thereby lets the electric elements and the pcb board that mount in advance on the pcb board combine reliably through soldering alloy.
Pcb board is through guipure (or chain) transmission, with direct current or alternating current motor transmission.The normal speed adjustable range of d.c. motor own is generally less than 5.If customer requirement guipure (or chain) slewing range surpasses 5, be convenient to handle different pcb board welding, then can only select for use to exchange extraordinary variable speed electric motors, particularly, utilize frequency converter timing.
Use the Frequency Converter Control alternating current motor, cost an arm and a leg.
Summary of the invention
The purpose of the utility model is exactly for the defective that overcomes above-mentioned prior art existence a kind of compact conformation to be provided, and working stability is reliable, but the reflow soldering of batch process is with high low speed switching mechanism.
The purpose of the utility model can realize through following technical scheme: a kind of reflow soldering is with high low speed switching mechanism; It is characterized in that; Comprise frame 1, be arranged on guipure axle 2 and driving shaft 7 on the frame 1; Guipure axle 2 is provided with guipure sprocket wheel 3, driving shaft 7 is provided with two freewheel clutches in the opposite direction: the first freewheel clutch 4A and the second freewheel clutch 4B; Also be provided with drive sprocket 10 on the driving shaft 7, also be provided with high-speed motor in the opposite direction 9 and zero motor 13 on the described frame 1, zero motor 13 ends are provided with overload protection clutches 14.
Described guipure axle 2 two ends connect frame 1 through flange bearing 6.
Described driving shaft 7 two ends are connected frame 1 through flange bearing and clutch shaft bearing installing plate 5 with the second bearing installing plate 16 respectively.
Described drive sprocket 10 connects guipure sprocket wheel 3 through chain.
Described high-speed motor 9 connects the first freewheel clutch 4A through chain.
Described zero motor 13 connects the second freewheel clutch 4B through chain.
Compared with prior art, the utility model utilizes 2 freewheel clutches at present, and high low speed d.c. motor is realized online switching, and is efficient and convenient.During use, as long as stir change-over switch, just can realize the switching of guipure high velocity and low regime.Simultaneously, utilize the slewing range of d.c. motor itself, maximum can realize 5X5=25 slewing range doubly in theory, has improved the disposal ability of reflow soldering greatly.In the practical application, d.c. motor is cheaply reliable, adapts to SMT industry operation characteristic, has practiced thrift cost greatly.
Description of drawings
Fig. 1 is the structural representation of the utility model mechanism;
Fig. 2 is the side view of the utility model mechanism.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
Shown in Fig. 1～2; A kind of reflow soldering is with high low speed switching mechanism; Comprise frame 1, be arranged on guipure axle 2 and driving shaft 7 on the frame 1; Guipure axle 2 two ends connect frame 1 through flange bearing 6, and driving shaft 7 two ends are connected frame 1 through flange bearing and clutch shaft bearing installing plate 5 with the second bearing installing plate 16 respectively, and guipure axle 2 is provided with guipure sprocket wheel 3, driving shaft 7 is provided with two freewheel clutches in the opposite direction: the first freewheel clutch 4A and the second freewheel clutch 4B; Also be provided with drive sprocket 10 on the driving shaft 7; Drive sprocket 10 connects guipure sprocket wheel 3 through chain, also is provided with high-speed motor in the opposite direction 9 and zero motor 13 on the described frame 1, and high-speed motor 9 connects the first freewheel clutch 4A through chain; Zero motor 13 connects the second freewheel clutch 4B through chain, and zero motor 13 ends are provided with overload protection clutches 14.
During speed end work; Zero motor 13 stalls, high-speed motor 9 rotate counterclockwise (Fig. 1 sees in the past backward), drive the first freewheel clutch 4A (speed end) pin rotation counterclockwise through chain; The first freewheel clutch 4A is because fixing with driving shaft 7; Driving shaft 7 rotates counterclockwise, and drive sprocket 10 also rotates counterclockwise on it, and drive sprocket 10 drives guipure sprocket wheel 3 through chain and rotates counterclockwise; Guipure axle 2 drives the guipure motion, sends pcb board to burner hearth.At this moment, the low speed end second freewheel clutch 4B makes reverse (Fig. 1 is to clockwise rotate from the back eyes front) skid.
When switching to low speed; High-speed motor 9 stalls, zero motor 13 startups rotate counterclockwise (Fig. 1 sees in the past backward), drive the second freewheel clutch 4B (low speed end) through chain and rotate counterclockwise; Drive sprocket 10 is because fixing with guipure axle 2; Also rotate counterclockwise, drive sprocket 10 drives guipure sprocket wheel 3 (guipure axles 2) through chain and rotates counterclockwise, thereby realizes outwards (from right to left) motion of guipure.At this moment, speed end second freewheel clutch 4 skids.
Claims (6)
1. a reflow soldering is with high low speed switching mechanism; It is characterized in that; Comprise frame (1), be arranged on guipure axle (2) and driving shaft (7) on the frame (1); Guipure axle (2) is provided with guipure sprocket wheel (3), driving shaft (7) is provided with two freewheel clutches in the opposite direction: first freewheel clutch (4A) and second freewheel clutch (4B); Also be provided with drive sprocket (10) on the driving shaft (7), also be provided with high-speed motor in the opposite direction (9) and zero motor (13) on the described frame (1), zero motor (13) end is provided with overload protection clutches (14).
2. a kind of reflow soldering according to claim 1 is characterized in that with high low speed switching mechanism described guipure axle (2) two ends connect frame (1) through flange bearing (6).
3. a kind of reflow soldering according to claim 1 is characterized in that with high low speed switching mechanism described driving shaft (7) two ends are connected frame (1) through flange bearing and clutch shaft bearing installing plate (5) with the second bearing installing plate (16) respectively.
4. a kind of reflow soldering according to claim 1 is characterized in that with high low speed switching mechanism described drive sprocket (10) connects guipure sprocket wheel (3) through chain.
5. a kind of reflow soldering according to claim 1 is characterized in that with high low speed switching mechanism described high-speed motor (9) connects first freewheel clutch (4A) through chain.
6. a kind of reflow soldering according to claim 1 is characterized in that with high low speed switching mechanism described zero motor (13) connects second freewheel clutch (4B) through chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120168748U CN202137486U (en) | 2011-05-24 | 2011-05-24 | High and low speed switching mechanism for backflow brazing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120168748U CN202137486U (en) | 2011-05-24 | 2011-05-24 | High and low speed switching mechanism for backflow brazing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202137486U true CN202137486U (en) | 2012-02-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120168748U Expired - Lifetime CN202137486U (en) | 2011-05-24 | 2011-05-24 | High and low speed switching mechanism for backflow brazing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202137486U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794525A (en) * | 2011-05-24 | 2012-11-28 | 上海朗仕电子设备有限公司 | Mechanism capable of performing high/low speed switching through overrun clutches for reflow furnace |
-
2011
- 2011-05-24 CN CN201120168748U patent/CN202137486U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794525A (en) * | 2011-05-24 | 2012-11-28 | 上海朗仕电子设备有限公司 | Mechanism capable of performing high/low speed switching through overrun clutches for reflow furnace |
| CN102794525B (en) * | 2011-05-24 | 2014-12-03 | 上海朗仕电子设备有限公司 | Mechanism capable of performing high/low speed switching through overrun clutches for reflow furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120208 |