CN217806872U

CN217806872U - Chain inner loop subassembly

Info

Publication number: CN217806872U
Application number: CN202221752682.8U
Authority: CN
Inventors: 丁平; 李继瑞
Original assignee: Dongguan Intercontinental Technology Co ltd
Current assignee: Dongguan Intercontinental Technology Co ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-11-15
Anticipated expiration: 2032-07-08

Abstract

The utility model relates to a SMT processing equipment technical field, and a chain inner loop subassembly is disclosed, a chain inner loop subassembly, including setting up the guide rail in the stove, still rotate in the stove and be provided with the chain, the chain is installed on the guide rail, the chain is used for driving the PCB board and moves in the stove, this chain inner loop subassembly, adopt double-deck guide rail, divide upper strata and lower floor, can install very conveniently and dismantle, maintain the maintenance, the unnecessary chain that greatly reduces simultaneously, the cost is greatly reduced, furnace inside heat is taken away to the while also greatly reduced chain, reduce the consumption.

Description

Chain inner loop subassembly

Technical Field

The utility model relates to a SMT processing equipment technical field specifically is a chain inner loop subassembly.

Background

In the SMT industry, the reflow soldering power of core equipment is higher and higher, the requirement is higher and higher, the structure is more and more compact, a high-temperature resistant chain passes through the inside of a hearth through a guide rail, passes through two ends and bypasses the lower part of the hearth, and a closed-loop chain ring is formed and becomes a mainstream transportation mode in the industry. The conveying motor is connected with a gear at the front end or the rear end of the machine through a coupler to drive a chain to rotate circularly, so that the PCB is preheated, welded, cooled and the like through the inner part of a hearth at a set speed.

In the reflow soldering transportation system, a chain penetrates through a guide rail section bar, and the uniform speed and stability in the transportation process are ensured by virtue of the linearity and stability of the guide rail; pass around the furnace lower part behind the guide rail, neither good control chain's length, the chain is also not hard up easily, installation and maintenance, and the change all can consume a large amount of time and energy, and in addition on the way in the operation, a large amount of heats also can be taken away to the chain, reduces the problem of the inside temperature of furnace, and the chain has cooled off after circulating a week, still takes away a large amount of heats inside reentrant furnace, has increaseed a lot of consumptions intangibly.

SUMMERY OF THE UTILITY MODEL

The utility model provides a chain inner loop subassembly possesses and reduces the chain and takes away the inside heat of furnace, reduces the beneficial effect of consumption, has solved and has mentioned in the above-mentioned background art on the way of the operation, and a large amount of heats also can be taken away to the chain, reduces the problem of the inside temperature of furnace, and the chain has cooled off after a circulation a week, and a large amount of heats still are taken away to reentrant furnace inside, has increaseed the big problem of a lot of consumptions invisibly.

The utility model provides a following technical scheme: the chain inner circulation assembly comprises a guide rail arranged in a furnace, wherein a chain is further arranged in the furnace in a rotating mode and is installed on the guide rail, and the chain is used for driving a PCB to move in the furnace.

As an alternative to the chain inner loop assembly of the present invention, wherein: the guide rail is of a double-layer structure;

the guide rails will serve to circulate the chains into a closed chain and within the furnace.

As an alternative of the chain inner circulation assembly of the present invention, wherein: the guide rail divides the chain into an uplink chain and a downlink chain, the uplink chain is arranged on the upper side of the guide rail, and the downlink chain is arranged on the lower side of the guide rail.

As an alternative to the chain inner loop assembly of the present invention, wherein: the furnace is also provided with a movable support plate, the movable support plate comprises a first movable support plate and a second movable support plate corresponding to the first movable support plate, and the first movable support plate and the second movable support plate are used for fixing chains.

As an alternative to the chain inner loop assembly of the present invention, wherein: the chain is connected with the first movable support plate through a feeding end, and the chain is connected with the second movable support plate through a discharging end.

As an alternative to the chain inner loop assembly of the present invention, wherein: the first movable support plate is rotatably provided with a first gear, the chain is arranged on the first gear, and the first gear is used for driving the chain to slide.

As an alternative to the chain inner loop assembly of the present invention, wherein: the second movable support plate is rotatably provided with a second gear, the chain is arranged on the second gear, and the second gear is used for being matched with the chain.

As an alternative of the chain inner circulation assembly of the present invention, wherein: the first movable support plate is also rotatably provided with a first guide wheel, the chain is arranged on the first guide wheel, and the first guide wheel is used for guiding the sliding of the chain;

and the second movable support plate is also rotatably provided with a second guide wheel, the chain is also arranged on the second guide wheel, and the second guide wheel is used for guiding the sliding of the chain.

As an alternative to the chain inner loop assembly of the present invention, wherein: the second movable support plate is further provided with a plate falling prevention small bearing, the second movable support plate is further provided with a guide rail support plate, and the plate falling prevention small bearing and the guide rail support plate are both used for preventing plate falling.

As an alternative of the chain inner circulation assembly of the present invention, wherein: the first movable support plate is further provided with a chain tensioner, the chain is erected on the chain tensioner, and the chain tensioner is used for adjusting the tightness degree of the chain.

The utility model discloses possess following beneficial effect:

1. this chain inner loop subassembly adopts double-deck guide rail, divides upper strata and lower floor, can install very conveniently and dismantle, maintains the maintenance, and the unnecessary chain of the very big reduction simultaneously reduces the cost greatly, and furnace inside heat, reduction consumption are taken away to the while also greatly reduced chain.

2. The chain internal circulation assembly is matched with a unique chain tensioner, so that the problem of chain looseness can be well solved, guide wheels are arranged at corners of two ends of a double-layer guide rail, the chain tensioner is arranged right below a front-end guide wheel, a driven gear is arranged at the upper right part of the front-end guide wheel, and a chain enters the lower layer of a double-layer guide rail profile through the driven gear; the guide rail section bar is steadily passed through, the chain comes out from the rear end of the lower layer of the double-layer guide rail and passes through the guide wheel, and the bypassing gear enters the upper layer of the double-layer guide rail to form a closed loop of the chain for circulating transportation.

Drawings

Fig. 1 is a schematic structural view of the first movable supporting plate, the second movable supporting plate and other components of the present invention.

Fig. 2 is a schematic structural view of the first movable supporting plate of the present invention.

Fig. 3 is a schematic mechanism diagram of the second movable supporting plate of the present invention.

Fig. 4 is a schematic structural view of the middle guide rail and the guide rail connecting plate of the present invention.

Fig. 5 is a schematic structural view of the chain tensioner of the present invention.

Fig. 6 is a schematic view of the internal structure of the chain tensioner of the present invention (without a base).

Fig. 7 is a schematic view of the structure of the base of the chain tensioner of the present invention (base only).

In the figure: 1. a base; 2. a support pin; 3. a slider; 4. a sprocket; 1A, an installation part; 1B, a connecting part; 1C, a through hole; 5. a clamp spring; 6. a spring; 7. fixing screws; 8. a gasket; 9. a bearing; 11. a guide rail; 12. a chain; 12. a chain; 131. a first gear; 132. a second gear; 141. a first guide wheel; 142. a second guide wheel; 15. a movable support plate; 151. a first movable support plate; 152. a second movable support plate; 16. a chain tensioner; 18. a guide rail connecting plate; 19. the small bearing prevents the plate from falling; 20. and a guide rail support plate.

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.

Example 1

Referring to fig. 1-6, an internal circulation assembly of a chain includes a guide rail 11 disposed inside a furnace, a chain 12 rotatably disposed inside the furnace, the chain 12 being mounted on the guide rail 11, the chain 12 being used for driving a PCB to move inside the furnace.

The guide rail 11 is of a double-layer structure;

the guide rails 11 will serve to make the chain a closed chain and circulate in the furnace.

In this embodiment: in the reflow soldering transportation system, a chain penetrates through a guide rail section bar, and the uniform speed and stability in the transportation process are ensured by virtue of the linearity and stability of the guide rail; pass and detour the furnace lower part behind the guide rail, neither good control chain's length, the chain is also not hard up easily, installation and maintenance, change and all can consume a large amount of time and energy, in addition on the way of operation, a large amount of heats also can be taken away to the chain, reduces the inside problem of furnace, and the chain has cooled off after circulation a week, still takes away a large amount of heats inside reentrant furnace, has increaseed a lot of consumptions intangibly.

Therefore, in order to reduce power consumption, a guide rail 11 is arranged in the furnace, a chain is arranged on the guide rail 11, and the guide rail 11 is of a double-layer design, so that when the chain enters the lower layer of the guide rail 11; the chain stably passes through the guide rail 11, and the chain enters the upper layer of the double-layer guide rail again after coming out from the rear end of the lower layer of the guide rail 11 to form a closed loop of the chain for circulating transportation.

Because the chain is always in the furnace, the chain 12 is always in a high-temperature state in the circulating process, so that the chain absorbs heat and heats with the furnace body only when the chain is heated in the furnace for the first time, and the problem that the chain absorbs heat in the furnace when contacting with the outside air in the circulating and conveying process in the traditional conveying device to reduce the temperature and absorbs the heat in the furnace when entering the furnace again is greatly solved.

Example 2

Referring to fig. 2-4, the furnace is further provided with a movable support plate, the movable support plate includes a first movable support plate and a first movable support plate 151, and the first movable support plate 151 are used for fixing the chain 12.

The connection between the chain 12 and the first movable support plate 151 is a feeding end, and the connection between the chain 12 and the first movable support plate 151 is a discharging end.

In this embodiment: the furnace is also provided with two movable support plates, namely a first movable support plate 151 and a second movable support plate 152, the first movable support plate 151 and the second movable support plate 152 are used for fixing the chain 12, the joint of the chain 12 and the first movable support plate 151 is a feeding end, and the joint of the chain 12 and the second movable support plate 152 is a discharging end.

Example 3

Referring to fig. 3-4, the first movable supporting plate 151 is rotatably provided with a first gear 131, the chain 12 is disposed on the first gear 131, and the first gear 131 is used for driving the chain 12 to slide.

The first movable fulcrum plate 151 is rotatably provided with a second gear 132, the chain 12 is arranged on the second gear 132, and the second gear 132 is used for cooperating with the first gear 131.

The first movable supporting plate 151 is further rotatably provided with a first guide wheel 141, the chain 12 is arranged on the first guide wheel 141, and the first guide wheel 141 is used for guiding the sliding of the chain 12;

the first movable supporting plate 151 is further rotatably provided with a second guide wheel 142, the chain 12 is further arranged on the second guide wheel 142, and the second guide wheel 142 is used for guiding the sliding of the chain 12.

In this embodiment: in order to enable the chain to rotate in the furnace to transport the plate, a first gear 131 is provided on the first movable support 151, the chain 12 is provided on the first gear 131, a second gear 132 corresponding to the first gear 131 is provided on the second movable support 152, and the second gear 132 is the same as the first gear 131 in size and shape, and the chain 12 is also provided on the second gear 132.

One of the first gear 131 and the second gear 132 can be used as a driving end to be connected with an external motor so as to drive the chain to move in the furnace.

However, it should be noted that: one and only one of the first gear 131 and the second gear 132 can be used as a driving end to be connected with an external motor for rotation at the same time, that is, when the first gear 131 is connected with the external motor, the first gear 131 is a driving wheel, the second gear 132 is a driven wheel, and when the second gear 132 is connected with the external motor, the second gear 132 is a driving wheel, and the first gear 131 is a driven wheel.

The chain 12 and the first and

second gears

131, 132 are in a conventional gear and chain mating relationship.

As a more stable auxiliary chain movement in the furnace, the first guide pulley 141 and the second guide pulley 142 are respectively provided on the first movable fulcrum 151 and the second movable fulcrum 152, and the chain 12 is further overlapped on the first guide pulley 141 and the second guide pulley 142.

The first guide wheel 141 and the second guide wheel 142 are used for guiding and assisting in supporting the chain 12, and limit the sliding direction of the chain, so that the chain 12 can slide more stably when being driven in the furnace, and the moving direction of the chain 12 can be limited.

Example 4

Referring to fig. 3-4, the guide rail 11 is further provided with a guide rail connecting plate 18, and the guide rail connecting plate 18 is used for splicing a plurality of guide rails 11 to prevent the guide rails from being too long to be horizontal.

In this embodiment: because the furnace body is longer, the guide rail 11 may be formed by splicing a plurality of standard parts in order to meet the use requirement, and therefore, in order to prevent the guide rail 11 from sinking completely in the middle part due to overlong length, the guide rail 11 can be connected through the guide rail connecting plate 18, and the condition that a single-section guide rail is too long, deformed and bent due to weight and the like so as to ensure the whole horizontal and straight line is avoided.

Example 5

Referring to fig. 1 to 6, the second movable support plate 152 is further provided with a falling-preventing plate small bearing 19, the second movable support plate 152 is further provided with a guide rail support plate 20, and both the falling-preventing plate small bearing 19 and the guide rail support plate 20 are used for preventing the falling of the plate.

In this embodiment: in order to ensure that the PCB transported by the chain is still on the extension straight line of one guide rail and will not fall off except the travel behind the guide rail, the second movable support plate 152 is respectively provided with the anti-falling plate small bearing 19 and the guide rail support plate 20, and the anti-falling plate small bearing 19 and the guide rail support plate 20 are mutually matched to limit the plate, so as to extend the transportation distance of the plate, so that the plate will not be understood to fall off from the second movable support plate 152 even if the plate falls off from the chain in most areas.

Example 6

The first movable supporting plate 151 is further provided with a chain tensioner 16, a chain is erected on the chain tensioner 16, and the chain tensioner 16 is used for adjusting the tightness degree of the chain.

The chain tensioner 16 includes: a base 1, a support pin 2, a slider 3, and a sprocket 4.

The base 1 is in a C-shaped structure, an installation part 1A and connecting parts 1B formed on two opposite sides of the installation part 1A are formed, a plurality of through holes 1C which are parallel to the axis of the supporting pin 2 and are uniformly arranged at intervals are formed in the installation part 1A of the base 1, and the base 1 is installed on equipment through the through holes 1C.

Secondly, two support pins 2 are arranged and horizontally fixed between the two connecting parts 1B, specifically, the two support pins symmetrically penetrate through the slider 3, and the end parts of the support pins 2 and the outer sides of the connecting parts 1B are locked through clamp springs 5.

In addition, the slider 3 is run through by the supporting pin 2, the supporting pin 2 is sleeved with a spring 6, two ends of the spring 6 abut against two opposite surfaces of the connecting part 1B and the slider 3, the slider 3 is elastically moved along the axial direction of the supporting pin 2 under the action of the spring 6, the chain wheel 4 is rotatably arranged on the top surface of the slider 3, the chain wheel 4 is used for being embedded and driven with a chain, a screw 7 is fixed at the center of the top of the slider 3, a gasket 8 is sleeved on the screw 7 and tightly attached to the top surface of the slider 3, the center of the chain wheel 4 is rotatably connected to the screw 7 through a bearing 9, and the bottom surface of the chain wheel 4 and the top surface of the slider 3 are arranged at intervals. When the chain tension changes, the chain is movably adjusted to the other position of the supporting pin 2 through the sliding block 3 under the action of the spring 6, the tightness degree of the chain is adjusted in a self-adaptive mode, the chain is kept on a proper tension force, the chain transmission friction force is reduced particularly at a non-guide rail section, the loss is reduced, and the service life is prolonged.

With this tensioning ware as modular global design, replace the chain drive tensioning adjustment mode among the traditional SMT processing equipment, modular design compact structure reduces and occupies the position, and the assembly of tensioning ware is simple and easy, uses reliability and convenience high.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and embellishments can be made without departing from the technical principle of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention.

Claims

1. A chain inner circulation assembly comprising a guide rail (11) disposed within a furnace, characterized in that: the furnace is also provided with a chain (12) in a rotating mode, the chain (12) is installed on the guide rail (11), and the chain (12) is used for driving the PCB to move in the furnace.

2. The chain inner circulation assembly of claim 1, wherein: the guide rail (11) is of a double-layer structure;

the guide rails (11) will be used to make the chain a closed chain and circulate in the furnace.

3. The chain inner circulation assembly of claim 2, wherein: the furnace is also provided with movable support plates, each movable support plate comprises a first movable support plate (151) and a second movable support plate (152) corresponding to the first movable support plate, and the first movable support plate (151) and the second movable support plate (152) are used for fixing the chain (12).

4. The chain inner circulation assembly of claim 3, wherein: the chain (12) is connected with the first movable support plate (151) through a feeding end, and the chain (12) is connected with the second movable support plate (152) through a discharging end.

5. The chain inner circulation assembly of claim 4, wherein: the first movable support plate (151) is rotatably provided with a first gear (131), the chain (12) is arranged on the first gear (131), and the first gear (131) is used for driving the chain (12) to slide.

6. The chain inner circulation assembly of claim 5, wherein: the second movable support plate (152) is provided with a second gear (132) in a rotating mode, the chain (12) is arranged on the second gear (132), and the second gear (132) is used for being matched with the first gear (131).

7. The chain inner circulation assembly of claim 6, wherein: the first movable support plate (151) is further rotatably provided with a first guide wheel (141), the chain (12) is arranged on the first guide wheel (141), and the first guide wheel (141) is used for guiding the sliding of the chain (12);

the second movable support plate (152) is further rotatably provided with a second guide wheel (142), the chain (12) is further arranged on the second guide wheel (142), and the second guide wheel (142) is used for guiding the sliding of the chain (12).

8. The chain inner circulation assembly of claim 7, wherein: the guide rail connecting plate is characterized in that a guide rail connecting plate (18) is further arranged on the guide rail (11), and the guide rail connecting plate (18) is used for splicing the guide rails (11).

9. The chain inner circulation assembly of claim 7, wherein: the second movable support plate (152) is further provided with a plate falling prevention small bearing (19), the second movable support plate (152) is further provided with a guide rail support plate (20), and the plate falling prevention small bearing (19) and the guide rail support plate (20) are both used for preventing plate falling.

10. The chain inner circulation assembly according to any one of claims 3 to 9, wherein: the chain tensioner (16) is further arranged on the first movable support plate (151), the chain is erected on the chain tensioner (16), and the chain tensioner (16) is used for adjusting the tightness degree of the chain.