Conveying device and reflow soldering equipment

Abstract

The utility model provides a conveying device and reflow soldering equipment. The conveying device comprises a supporting frame, an adjusting mechanism and a tensioning mechanism. Two conveying parts are arranged on the supporting frame and provided with conveying chains in the same conveying direction. The adjusting mechanism is arranged on the supporting frame and comprises a driving assembly and a sliding part, and the driving assembly is in driving connection with the sliding part to drive the sliding part to drive the conveying part to reciprocate in the width direction of the supporting frame; the tensioning mechanism is arranged on the supporting frame and comprises a tensioning plate and a tensioning adjusting assembly, the tensioning plate is connected to at least one of the two conveying parts, the tensioning adjusting assembly is arranged on the tensioning plate and can reciprocate in the height direction of the supporting frame, and a conveying chain is wound around the tensioning adjusting assembly. The conveying device can solve the problem that a chain of a conveying device in the prior art is prone to loosening in the width adjusting process.

Description

Technical Field

[0001] This disclosure relates to the field of conveying technology, and in particular to a conveying device and a reflow soldering equipment. Background Technology

[0002] Reflow soldering offers advantages such as temperature control and prevention of solder oxidation during the soldering process, making it widely used in electronics manufacturing and other fields. Components on various circuit boards used in computers and other equipment are soldered onto the circuit boards using reflow soldering. Reflow soldering equipment contains a heating circuit that heats air or nitrogen to a high temperature and blows it onto the circuit board where components have been attached, causing the solder on both sides of the components to melt and bond with the circuit board.

[0003] The process of transporting circuit boards in reflow soldering equipment requires chain conveying. However, since different circuit boards have different sizes, the existing conveying devices in reflow soldering equipment can only transport circuit boards of the same size. When the size of the circuit board changes, the chain of the conveying device needs to be manually adjusted, which is not only time-consuming and labor-intensive, but also affects the conveying efficiency.

[0004] The prior art proposes a width-adjustable conveyor device (CN215280295U) for a reflow soldering machine, including a support frame, a right drive assembly, a left drive assembly, and a synchronization assembly. A space for placing a PCB board is formed between the left conveyor chain on the left drive assembly and the right conveyor chain on the right drive assembly. The synchronization assembly includes a rotary handle, a coupling, a reverse-tooth ball screw, a straight-tooth ball screw, a reverse-tooth ball screw nut on the right vertical plate, and a straight-tooth ball screw nut on the left vertical plate. The right end of the reverse-tooth ball screw is rotatably mounted on the right side of the support frame and connected to the rotary handle. The left end of the reverse-tooth ball screw spirally passes through the reverse-tooth ball screw nut and is connected to the right end of the straight-tooth ball screw through the coupling. The left end of the straight-tooth ball screw spirally passes through the straight-tooth ball screw nut and is rotatably connected to the left side of the support frame.

[0005] However, during the transport of circuit boards, the high temperature heating inside the reflow soldering equipment causes the chain to expand and become longer, making the chain prone to loosening and falling off, thus reducing the stability of the circuit board transport device. Utility Model Content

[0006] One technical problem that this disclosure aims to solve is the issue that the chain in the existing conveyor device is prone to loosening during the width adjustment process.

[0007] To address the aforementioned technical problems, this disclosure provides a conveying device, comprising:

[0008] A support frame is provided, on which two conveying parts are provided, and both conveying parts have conveying chains in the same conveying direction;

[0009] An adjusting mechanism, mounted on a support frame, includes a drive assembly and a sliding part. The sliding part is connected to at least one of two conveying parts. The drive assembly is driven by the sliding part to drive the conveying part to reciprocate along the width direction of the support frame.

[0010] The tensioning mechanism is mounted on the support frame and includes a tensioning plate and a tensioning adjustment assembly. The tensioning plate is connected to at least one of the two conveying sections, and the tensioning adjustment assembly is mounted on the tensioning plate and can reciprocate along the height direction of the support frame. A conveyor chain is wound around the tensioning adjustment assembly.

[0011] In some embodiments, the driving component includes:

[0012] A drive rod is rotatably mounted on a support frame and extends along the width of the support frame. A sliding part is provided on the drive rod, and the drive rod drives the sliding part to reciprocate along the length of the drive rod to move the sliding part.

[0013] The drive unit is mounted on the support frame and is driven to drive the drive rod to rotate.

[0014] In some embodiments, the sliding part includes a first slider, which has a threaded hole and a guide hole.

[0015] The drive rod has a threaded section along its length.

[0016] The adjustment mechanism also includes a guide rod, which is mounted on the support frame and extends along the width of the support frame;

[0017] The first slider is fitted onto the threaded section through a threaded hole, and the first slider is fitted onto the guide rod through a guide hole.

[0018] In some embodiments, the tension adjustment assembly includes:

[0019] A limiting component is provided on the tensioning plate;

[0020] The second slider is slidably disposed on the limiting component, and a conveyor chain is wound around the second slider;

[0021] An elastic element is disposed between the limiting component and the second slider, and the two opposite ends of the elastic element abut against the limiting component and the second slider, respectively.

[0022] In some embodiments, the limiting component includes:

[0023] Abutting block, which is set on the tensioning plate;

[0024] A limiting rod is connected to the abutment block and extends along the height direction of the support frame. A second slider and an elastic element are sleeved on the limiting rod. The two opposite ends of the elastic element abut against the abutment block and the second slider, respectively.

[0025] In some embodiments, the limiting component further includes a limiting block disposed on the tensioning plate and spaced apart from the abutment block. The limiting block is connected to the limiting rod, and a second slider and an elastic element are provided between the limiting block and the abutment block.

[0026] In some embodiments, the limiting rod includes two rods, both of which extend along the height direction of the support frame. Each limiting rod is fitted with an elastic element, and the second slider is fitted on the two limiting rods.

[0027] In some embodiments, the tensioning mechanism further includes a first transmission sprocket, a second transmission sprocket, and a tensioning sprocket. The first transmission sprocket and the second transmission sprocket are both disposed on the tensioning plate, and the tensioning sprocket is disposed on the second slider. The conveyor chain is sequentially engaged with the first transmission sprocket, the tensioning sprocket, and the second transmission sprocket.

[0028] In some embodiments, the adjustment mechanism includes two mechanisms, which are respectively disposed at opposite ends of the support frame along the length of the support frame.

[0029] On the other hand, embodiments of this disclosure also provide a reflow soldering apparatus, which includes the aforementioned conveying device.

[0030] Through the above technical solution, the conveying device provided in this disclosure, by cooperating with the drive component and the sliding part, can adjust the distance between the two conveying parts, so that the conveying device can adapt to circuit boards of different widths, effectively improving the conveying efficiency of the conveying device. At the same time, in this disclosure, by winding the conveying chain around the tension adjusting component, and utilizing the movement of the tension adjusting component to keep the conveying chain under pressure and always in a taut state, the stability of the conveying process of the conveying device is effectively guaranteed. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of the conveying device disclosed in the embodiments of this disclosure;

[0033] Figure 2 This is an appendix disclosed in the embodiments of this disclosure. Figure 1 Enlarged view of region A in the middle;

[0034] Figure 3 This is a schematic diagram of the tensioning mechanism disclosed in the embodiments of this disclosure;

[0035] Figure 4 This is a front view of a tensioning mechanism with different tension states disclosed in an embodiment of this disclosure.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Support frame; 2. Conveying section; 3. Conveying chain; 4. Adjusting mechanism; 5. Drive assembly; 6. Drive rod; 7. Sliding part; 8. First slider; 9. Threaded hole; 10. Guide hole; 11. Guide rod; 12. Tensioning mechanism; 13. Tensioning plate; 14. Tensioning adjustment assembly; 15. Limiting component; 16. Second slider; 17. Elastic element; 18. Abutment block; 19. Limiting rod; 20. Limiting block; 21. First transmission sprocket; 22. Second transmission sprocket; 23. Tensioning sprocket. Detailed Implementation

[0038] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0039] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0040] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0042] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.

[0043] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0044] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0045] As mentioned in the background section, existing circuit board conveying devices can only transport circuit boards of the same size. When the size of the circuit board changes, manual adjustment is required, which is not only time-consuming and labor-intensive but also affects conveying efficiency. Furthermore, during the conveying process, the chain expands and lengthens due to the high temperature inside the reflow soldering equipment, causing the chain to loosen or fall off, reducing the stability of the conveying device. To address this, the inventors of this application have designed a novel conveying device that solves the problem of chain loosening during width adjustment in existing conveying devices. The conveying device of this application will be described in detail below with reference to the accompanying drawings.

[0046] It should be noted that in this application, "the length direction of the support frame" is an appendix. Figure 1 The direction indicated by the letter X in the middle, "the width direction of the support frame" is attached. Figure 1 The direction indicated by the letter Y in the middle, "the height direction of the support frame" is attached.Figure 1 The direction indicated by the letter Z.

[0047] See Figures 1 to 4 As shown, according to the embodiments disclosed in this application, a conveying device is provided, which includes a support frame 1, an adjusting mechanism 4 and a tensioning mechanism 12.

[0048] The support frame 1 is provided with two conveying sections 2, each with a conveying chain 3 in the same conveying direction. An adjustment mechanism 4 is provided on the support frame 1, and includes a drive assembly 5 and a sliding part 7. The sliding part 7 is connected to at least one of the two conveying sections 2. The drive assembly 5 is driven to drive the sliding part 7 to move the conveying section 2 back and forth along the width direction of the support frame 1. A tensioning mechanism 12 is provided on the support frame 1, and includes a tensioning plate 13 and a tensioning adjustment assembly 14. The tensioning plate 13 is connected to at least one of the two conveying sections 2. The tensioning adjustment assembly 14 is provided on the tensioning plate 13 and can move back and forth along the height direction of the support frame 1. A conveying chain 3 is wound around the tensioning adjustment assembly 14.

[0049] In this embodiment, the conveyor chain 3 is used to support and convey the circuit board; the adjusting mechanism 4 is used to adjust the distance between the two conveying parts 2 so that the conveying device can adapt to circuit boards of different sizes; the tensioning mechanism 12 cooperates with the adjusting structure to maintain tension on the conveyor chain 3 during the adjustment of the distance by the adjusting mechanism 4. It is understood that the sliding part 7 can be connected to only one conveying part 2, or it can be connected to both conveying parts 2. The attached diagram of this embodiment... Figure 2 The diagram shows the case where the sliding part 7 is connected to only one conveying part 2.

[0050] In actual use of this conveying device, the drive motor is turned on, driving the conveyor chains 3 on the two conveyor sections 2 to rotate. The circuit board is then placed on the two conveyor chains 3 for conveying. During this process, since the sliding part 7 is connected to at least one of the two conveyor sections 2, and the drive assembly 5 is driven by the sliding part 7, when the circuit board size increases, the drive assembly 5 simply drives the sliding part 7 to slide away from the other conveyor section 2, thereby moving one conveyor section 2 away from the other, thus increasing the distance between the two conveyor sections 2. Conversely, when the circuit board size decreases, the drive assembly 5 simply drives the sliding part 7 to slide closer to the other conveyor section 2, thereby moving one conveyor section 2 closer to the other, thus decreasing the distance between the two conveyor sections 2. This conveying device has a simple structure, is easy and quick to operate, and can convey circuit boards of different sizes, effectively improving conveying efficiency. Meanwhile, during the process of adjusting the distance between the two conveying sections 2 by the adjusting mechanism 4, since the conveying chain 3 is wound on the tension adjusting component 14, when the high temperature gas generated in the reflow soldering equipment causes the conveying chain 3 to expand and loosen, by adjusting the position of the tension adjusting component 14 on the tension plate 13, the conveying chain 3 is always under pressure and always kept in a tensioned state, which to a certain extent prevents the conveying chain 3 from loosening and falling off due to expansion and lengthening, and effectively ensures the stability of the conveying circuit board of the conveying device.

[0051] In other words, compared to existing conveying devices, this embodiment, through the cooperation of the drive component 5 and the sliding part 7, allows for adjustment of the distance between the two conveying parts 2, enabling the conveying device to adapt to circuit boards of different widths and effectively improving the conveying efficiency. Simultaneously, this embodiment, by winding the conveying chain 3 around the tension adjustment component 14 and utilizing the movement of the tension adjustment component 14 to keep the conveying chain 3 under pressure and maintain a constant tension, effectively ensures the stability of the conveying process.

[0052] In some embodiments, see Figure 2 As shown, the drive assembly 5 includes a drive rod 6 and a drive unit (not shown in the figures). The drive rod 6 is rotatably mounted on the support frame 1 and extends along the width direction of the support frame 1. A sliding part 7 is provided on the drive rod 6, and the drive rod 6 drives the sliding part 7 to reciprocate along the length direction of the drive rod 6 to move the sliding part 7. The drive unit is disposed on the support frame 1 and is drivenly connected to the drive rod 6 to drive the drive rod 6 to rotate. It is understood that the drive unit in this embodiment includes a motor.

[0053] Specifically, in actual operation, after the drive unit and drive rod 6 are installed on the support frame 1, the drive unit and drive rod 6 are connected together. When the drive unit starts working, it can drive the drive rod 6 to rotate, thereby synchronously driving the sliding part 7 on the drive rod 6 to move along the length of the drive rod 6. The movement of the sliding part 7 can drive the movement of the conveying part 2, ultimately achieving the adjustment of the distance between the two conveying parts 2. That is to say, when it is necessary to adjust the distance between the two conveying parts 2, it is only necessary to turn on the drive unit, which will cause the drive rod 6 to rotate clockwise or counterclockwise, thereby driving the sliding part 7 to move away from or towards the other conveying part 2, and thus driving the conveying part 2 connected to the sliding part 7 to move away from or towards the other conveying part 2, ultimately achieving the adjustment of the distance between the two conveying parts 2.

[0054] In some embodiments, see Figure 2 As shown, the sliding part 7 includes a first slider 8, which has a threaded hole 9 and a guide hole 10; the drive rod 6 has a threaded section (not shown in the figure) along its length; the adjustment mechanism 4 also includes a guide rod 11, which is disposed on the support frame 1 and extends along the width direction of the support frame 1; wherein, the first slider 8 is sleeved on the threaded section through the threaded hole 9, and the first slider 8 is sleeved on the guide rod 11 through the guide hole 10.

[0055] Specifically, since the first slider 8 is fitted onto the threaded section through the threaded hole 9, when the driving unit drives the driving rod 6 to rotate, the first slider 8 can move along the threaded section with the rotation of the driving rod 6. The guide rod 11, passing through the guide hole 10, ensures that the first slider 8 moves only along the length of the driving rod 6, preventing the first slider 8 from rotating around the driving rod 6. During this process, the first slider 8 can drive the conveying unit 2 to move under the drive of the driving assembly 5, thereby adjusting the distance between the two conveying units 2.

[0056] In some embodiments, see Figure 3 As shown, the tension adjustment assembly 14 includes a limiting component 15, a second slider 16, and an elastic element 17. The limiting component 15 is disposed on the tensioning plate 13; the second slider 16 is slidably disposed on the limiting component 15, and a conveyor chain 3 is wound around the second slider 16; the elastic element 17 is disposed between the limiting component 15 and the second slider 16, with its opposite ends abutting against the limiting component 15 and the second slider 16, respectively.

[0057] Specifically, the elastic element 17 in this embodiment can provide appropriate tension. During the operation of the conveying device, the conveying chain 3 may become loose due to wear, thermal expansion and contraction, or other external forces. At this time, the elastic element 17 can automatically adjust the position of the second slider 16 on the limiting component 15 according to the actual tension of the conveying chain 3, thereby ensuring that the conveying chain 3 always remains taut and ensuring the normal operation of the conveying device. At the same time, the setting of the limiting component in this embodiment not only provides a sliding path for the second slider 16 and limits the maximum range of movement of the second slider 16, thereby ensuring that the conveying chain 3 will not be damaged due to excessive tension or looseness, but also acts as a stop for the elastic element 17, effectively ensuring that the elastic element 17 can be stretched or compressed between the limiting component 15 and the second slider 16. In addition, by giving the elastic element 17 a certain elastic coefficient and deformation range, this embodiment can ensure that the conveying chain 3 can obtain appropriate tension under different working conditions, effectively avoiding slippage due to insufficient tension or damage due to excessive tension.

[0058] In other words, before the conveyor chain 3 becomes slack, the conveyor chain 3 wound around the second slider 16 will drive the second slider 16 to apply pressure to the elastic element 17, so that the elastic element 17 is under force and in a taut and compressed state (see...). Figure 4 (As shown at the letter B in the middle). When the conveyor chain 3 loosens due to thermal expansion or other factors, the length of the conveyor chain 3 increases, resulting in a decrease in the force exerted by the conveyor chain 3 on the second slider 16. This reduces the pressure exerted by the second slider 16 on the elastic member 17. At this time, the elastic member 17 rebounds due to its elasticity, and then applies a rebound force to the second slider 16 to move the second slider 16 away from the limiting component until the elastic member 17 and the conveyor chain 3 are tightened again (see...). Figure 4 (As shown at the letter C in the middle).

[0059] It is understood that the elastic element 17 in this embodiment includes a spring. Of course, in other embodiments of this application, the elastic element 17 can also be configured as an elastic gasket, elastic sleeve, or other structure. Any other variations under the concept of this application are within the protection scope of this application.

[0060] In some embodiments, see Figure 3 As shown, the limiting component 15 includes an abutment block 18 and a limiting rod 19. The abutment block 18 is disposed on the tension plate 13; the limiting rod 19 is connected to the abutment block 18 and extends along the height direction of the support frame 1, and a second slider 16 and an elastic element 17 are sleeved on the limiting rod 19, with the opposite ends of the elastic element 17 abutting against the abutment block 18 and the second slider 16 respectively.

[0061] Specifically, the abutment block 18 is configured to act as a stop for the elastic element 17, effectively ensuring that the elastic element 17 can be stretched or compressed between the limiting component 15 and the second slider 16; the limiting rod 19 is configured to provide a sliding path for the second slider 16, limiting the maximum range of movement of the second slider 16, thereby ensuring that the conveyor chain 3 will not be damaged due to excessive tension or slack. That is to say, before the conveyor chain 3 slackens, the conveyor chain 3 wound around the second slider 16 will drive the second slider 16 to apply pressure to the elastic element 17, causing the elastic element 17 to compress towards the abutment block 18, thus putting the elastic element 17 under tension and compression (see...). Figure 4 (As shown at the letter B in the middle). When the conveyor chain 3 becomes loose due to factors such as thermal expansion, the length of the conveyor chain 3 will increase, thereby reducing the pressure exerted by the second slider 16 on the elastic member 17. This causes the elastic member 17 to elongate toward the second slider 16, which in turn causes the second slider 16 to move away from the abutment block 18 until the elastic member 17 and the conveyor chain 3 are re-tensioned (see...). Figure 4 (As shown at the letter C in the middle).

[0062] In some embodiments, see Figure 3 As shown, the limiting component 15 also includes a limiting block 20, which is disposed on the tensioning plate 13 and spaced apart from the abutment block 18. The limiting block 20 is connected to the limiting rod 19, and a second slider 16 and an elastic element 17 are provided between the limiting block 20 and the abutment block 18.

[0063] Specifically, the limiting block 20 and the abutment block 18 control the movement range of the second slider 16 and the elastic element 17. When the conveyor chain 3 becomes loose due to thermal expansion or other factors, the second slider 16 moves towards the limiting block 20 due to the elongation of the elastic element 17. At this time, the limiting block 20 can stop the second slider 16, preventing the elastic element 17 from being overstretched and damaged due to excessive displacement of the second slider 16. At the same time, in this embodiment, by connecting the limiting block 20 to the limiting rod 19, additional support can be provided for the entire tension adjustment assembly 14, effectively ensuring the stability and reliability of the tensioning mechanism 12.

[0064] In some embodiments, see Figure 3 As shown, the limiting rod 19 includes two rods, both of which extend along the height direction of the support frame 1. Each limiting rod 19 is fitted with an elastic element 17, and the second slider 16 is fitted on the two limiting rods 19.

[0065] Specifically, the arrangement of two limiting rods 19 and two elastic elements 17 achieves a balanced distribution of force, ensuring the stability of the second slider 16 when sliding on the limiting rods 19, preventing the second slider 16 from tilting, and reducing wear on the second slider 16 caused by friction and impact loads.

[0066] In some embodiments, see Figures 3 to 4 As shown, the tensioning mechanism 12 also includes a first transmission sprocket 21, a second transmission sprocket 22 and a tensioning sprocket 23. The first transmission sprocket 21 and the second transmission sprocket 22 are both disposed on the tensioning plate 13, and the tensioning sprocket 23 is disposed on the second slider 16. The conveying chain 3 is sequentially engaged with the first transmission sprocket 21, the tensioning sprocket 23 and the second transmission sprocket 22.

[0067] Specifically, in this embodiment, a tensioning sprocket 23 that meshes with the conveyor chain 3 is fixed on the second slider 16, and the limiting rod 19 is arranged along the height direction of the support frame 1. When the conveyor chain 3 becomes loose, the extension of the elastic element 17 drives the second slider 16 to move along the length direction of the limiting rod 19 towards the limiting block 20, thereby driving the tensioning sprocket 23 on the second slider 16 to move, so that the conveyor chain 3 is subjected to pressure and always kept in a taut state. The structure is simple, the tension of the conveyor chain 3 is easy to adjust, and the service life of the conveyor chain 3 is extended to a certain extent. At the same time, the first conveyor sprocket 21 and the second conveyor sprocket 22 are set to provide support force for the conveyor chain 3, so that the conveyor chain 3 is always kept in a taut state under the action of the tensioning sprocket 23.

[0068] In some embodiments, see Figure 1 As shown, the adjustment mechanism 4 includes two parts, which are respectively located at opposite ends of the support frame 1 along the length of the support frame 1. Specifically, the two adjustment mechanisms 4 work synchronously to ensure that the opposite ends of the conveying part 2 can reciprocate synchronously along the width of the support frame 1, thereby maintaining the balance and stability of the overall movement of the conveying part 2.

[0069] As can be seen from the above embodiments, when the conveying device of this application needs to adjust its width, the adjusting mechanism 4 operates. During this process, the driving unit drives the driving rod 6 to rotate. Since the driving rod 6 is threadedly connected to the first slider 8, and the first slider 8 is sleeved on the guide rod 11, the first slider 8 can only move along the axial direction of the guide rod 11 and will not rotate around the driving rod 6 when the driving rod 6 rotates. In this way, the distance between the two conveying units 2 can be adjusted, thereby increasing or decreasing the distance between the two conveying chains 3, thus adapting to circuit boards of different widths. The conveying device with this structure is simple in structure, convenient and quick to operate, and can realize the conveying of circuit boards of different sizes, effectively improving the conveying efficiency.

[0070] When the conveying device of this application expands and loosens due to the influence of high temperature environment during operation, the length of the conveying chain 3 will increase, resulting in a decrease in the force exerted by the conveying chain 3 on the tension sprocket 23. This reduces the pressure exerted by the second slider 16 on the elastic element 17. At this time, the elastic element 17 rebounds due to its elasticity, and then applies a rebound force to the second slider 16 to make the second slider 16 move towards the direction of the limit block 20. Ultimately, the conveying chain 3 is subjected to a pressure and always remains in a taut state, which to a certain extent prevents the conveying chain 3 from loosening and falling off due to expansion and lengthening, and effectively ensures the stability of the conveying circuit board of the conveying device.

[0071] On the other hand, this application also provides a reflow soldering apparatus that includes the aforementioned conveying device. Therefore, the reflow soldering apparatus includes all the technical effects of the aforementioned conveying device. Since the technical effects of the conveying device have been described in detail above, they will not be repeated here.

[0072] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0073] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner.

Claims

1. A delivery device characterized by, The utility model relates to a kind of supporting frame (1), two conveying parts (2) are provided on the supporting frame (1), two the conveying part (2) is with the same conveying direction conveying chain (3); Adjusting mechanism (4) is provided on the supporting frame (1), the adjusting mechanism (4) includes drive assembly (5) and sliding part (7), the sliding part (7) is connected in at least one of two the conveying part (2), the drive assembly (5) is driven connection with the sliding part (7) to drive the sliding part (7) with the conveying part (2) is driven along the width direction of the supporting frame (1) reciprocating motion; And Tensioning mechanism (12) is provided on the supporting frame (1), the tensioning mechanism (12) includes tensioning plate (13) and tensioning adjusting assembly (14), the tensioning plate (13) is connected in at least one of two the conveying part (2), the tensioning adjusting assembly (14) is provided on the tensioning plate (13) and can reciprocating motion along the height direction of the supporting frame (1), and the tensioning adjusting assembly (14) is wound with the conveying chain (3) on. The drive assembly (5) includes:

2. The delivery device of claim 1, wherein, Drive rod (6) is rotatably installed on the supporting frame (1) and extends along the width direction of the supporting frame (1), the drive rod (6) is provided with the sliding part (7), and the drive rod (6) drives the sliding part (7) reciprocating motion along the length direction of the drive rod (6) to drive the sliding part (7) motion; Drive part is provided on the supporting frame (1) and is driven connection with the drive rod (6) to drive the drive rod (6) rotation. The sliding part (7) includes first sliding block (8), the first sliding block (8) is provided with threaded hole (9) and guide hole (10); 3. The delivery device of claim 2, wherein, The length direction of the drive rod (6) is provided with threaded segment; The adjusting mechanism (4) further includes guide rod (11), and the guide rod (11) is provided on the supporting frame (1) and extends along the width direction of the supporting frame (1); Wherein, the first sliding block (8) is sleeved on the threaded segment through the threaded hole (9), and the first sliding block (8) is sleeved on the guide rod (11) through the guide hole (10). The tensioning adjusting assembly (14) includes:

4. The delivery device of claim 1, wherein, Limiting component (15) is provided on the tensioning plate (13); Second sliding block (16) is slidably provided on the limiting component (15), and the second sliding block (16) is wound with the conveying chain (3); Elastic member (17) is provided between the limiting component (15) and the second sliding block (16), and opposite ends of the elastic member (17) are respectively abutted on the limiting component (15) and the second sliding block (16). The limiting component (15) includes:

5. The delivery device of claim 4, wherein, Butt block (18) is provided on the tensioning plate (13); ​ A limiting rod (19) is connected to the abutting block (18) and extends along the height direction of the support frame (1), and the second sliding block (16) and the elastic member (17) are sleeved on the limiting rod (19), and the opposite ends of the elastic member (17) abut against the abutting block (18) and the second sliding block (16) respectively.

6. The delivery device of claim 5, wherein, The limiting member (15) further comprises a limiting block (20) which is arranged on the tensioning plate (13) and is arranged in a spaced manner with the abutting block (18), the limiting block (20) is connected with the limiting rod (19), and the second sliding block (16) and the elastic member (17) are arranged between the limiting block (20) and the abutting block (18).

7. The delivery device of claim 5, wherein, The limiting rod (19) comprises two limiting rods (19), and the two limiting rods (19) extend along the height direction of the support frame (1), the elastic member (17) is sleeved on each of the limiting rods (19), and the second sliding block (16) is sleeved on the two limiting rods (19).

8. The delivery device of claim 4, wherein, The tensioning mechanism (12) further comprises a first transmission sprocket (21), a second transmission sprocket (22) and a tensioning sprocket (23), the first transmission sprocket (21) and the second transmission sprocket (22) are arranged on the tensioning plate (13), the tensioning sprocket (23) is arranged on the second sliding block (16), and the conveying chain (3) is sequentially meshed with the first transmission sprocket (21), the tensioning sprocket (23) and the second transmission sprocket (22).

9. The delivery device of any one of claims 1 to 8, wherein, The adjusting mechanism (4) comprises two adjusting mechanisms (4), and the two adjusting mechanisms (4) are arranged at opposite ends of the support frame (1) along the length direction of the support frame (1).

10. A reflow soldering apparatus characterized by comprising: The reflow soldering apparatus comprises the conveying device according to any one of claims 1 to 9.

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