Anti-locking chain width adjusting assembly

Abstract

The utility model discloses an anti-locking chain width adjusting assembly which comprises a shell frame, two rotating shafts which are symmetrically distributed in the longitudinal direction are rotationally connected between the left wall and the right wall of the shell frame through a first bearing, and the anti-locking chain width adjusting assembly further comprises a width adjusting assembly body. The width adjusting assembly comprises anti-falling wheels, bevel chamfers, chain wheels, a chain and a power assembly, the anti-falling wheels are slidably connected to the left end and the right end of the outer side of the rotating shaft respectively, the bevel chamfers are arranged at the left end and the right end of each anti-falling wheel, and the chain wheels are arranged in the middles of the anti-falling wheels. According to the anti-locking chain width adjusting assembly, width adjusting operation can be automatically conducted on a chain in a reflow soldering furnace according to requirements through the transmission element and the detection element, a worker does not need to use a measuring tool, meanwhile, in the chain width adjusting process of the device, meshing between a chain wheel and the chain is guided and limited through the guiding element, and the working efficiency is improved. And the phenomenon that the chain transmission is stuck due to horizontal dislocation and falling between the two is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of reflow soldering equipment, specifically to an anti-jamming chain width adjustment component. Background Technology

[0002] A reflow oven is a device that provides a heating environment to melt solder paste, thereby reliably bonding surface mount components and PCB pads together through the solder paste alloy. Inside the reflow oven, the components are conveyed by two chains. The material holder is synchronously fixed to the two chains, so that the material holder moves with the movement of the chains, thus realizing the conveying of materials. However, the volume of the material holder varies depending on the requirements, so the width of the two chains needs to be adjusted according to the volume of the material holder.

[0003] In some chain width adjustment components, during the chain width adjustment process, if the main sprocket is adjusted to the correct position while the driven sprocket is not, the sprocket and chain will be in a horizontally tilted state. This may cause the chain to horizontally misalign and fall off the corresponding sprocket, resulting in jamming. This issue needs improvement. Additionally, when adjusting the width of two chains, operators need to use measuring tools to predict the lateral adjustment distance between the two chains before the chain width adjustment is achieved through the drive unit, making the operation rather cumbersome. Utility Model Content

[0004] To address the problems in the background art, this utility model provides the following technical solution: an anti-jamming chain width adjustment component, including a housing frame, wherein two longitudinally symmetrically distributed rotating shafts are rotatably connected between the left and right walls of the housing frame via bearings, and also includes a width adjustment component;

[0005] The width adjustment assembly includes an anti-detachment wheel, a chamfered face, a sprocket, a chain, and a power assembly. The anti-detachment wheel is slidably connected to the left and right ends of the outer side of the rotating shaft. Both ends of the anti-detachment wheel have chamfered faces. The middle of the anti-detachment wheel has a sprocket. Two longitudinally adjacent sprockets are connected by a chain drive. The anti-detachment wheel and the outer frame are both equipped with a power assembly.

[0006] This device, through transmission and detection elements, can automatically adjust the chain width in the reflow oven as needed, without the need for operators to use measuring tools. At the same time, during the chain width adjustment process, the device guides and limits the meshing between the sprocket and the chain through the guide element, preventing the chain drive from jamming due to horizontal misalignment.

[0007] Furthermore, it also includes a microcontroller, which is located outside the housing frame. The input terminal of the microcontroller is electrically connected to an external power supply, which facilitates the control of electrical components.

[0008] Furthermore, the power assembly includes an annular seat, a connecting seat, a connecting plate, an electro-hydraulic actuator, and a connecting rod. The annular seats are rotatably connected to the left and right sides of the anti-slip wheel via bearings. A connecting seat is provided between two horizontally adjacent annular seats, and a connecting plate is provided on the lower side of each connecting seat. Two longitudinally symmetrically distributed electro-hydraulic actuators are provided on the left and right walls of the outer casing. The input ends of the electro-hydraulic actuators are electrically connected to the output ends of the microcontroller. The telescopic ends of the electro-hydraulic actuators are fixedly connected to the adjacent connecting plates via connecting rods, providing power for adjusting the chain width within the anti-jamming chain width adjustment assembly.

[0009] Furthermore, the power assembly also includes reinforcing ribs, which are respectively disposed on the side of the connecting plate away from the lateral center of the outer casing frame, thereby improving the structural strength of the connection between the connecting plate and the connecting seat in the anti-jamming chain width adjustment assembly.

[0010] Furthermore, the width adjustment component also includes laser sensors, which are respectively located on the side of the connecting plate away from the lateral center of the outer frame. The laser sensors are all bidirectionally electrically connected to the microcontroller to measure and upload the lateral movement distance of the anti-slip wheel inside the anti-jamming chain width adjustment component.

[0011] Furthermore, guide grooves are provided on the outer side of each shaft, and the interior of each anti-slip wheel is slidably connected to the adjacent guide groove through guide strips, so that adjacent shafts, sprockets and anti-slip wheels in the anti-jamming chain width adjustment assembly can rotate synchronously.

[0012] Furthermore, the beveled chamfers are all coated with a ceramic coating to increase the wear resistance of the beveled chamfers of the anti-slip wheel inside the anti-jamming chain width adjustment assembly.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. When using the anti-jamming chain width adjustment component, the device's power component and laser sensor can automatically adjust the chain width in the reflow oven as needed, without the need for operators to use measuring tools, resulting in a high degree of automation.

[0015] 2. During the chain width adjustment process, the anti-detachment wheel and the beveled chamfer are used to guide and limit the meshing between the sprocket and the chain, preventing the chain drive from jamming due to horizontal misalignment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a partial structural diagram of the width adjustment component of this utility model;

[0018] Figure 3This is a schematic diagram of the anti-detachment wheel and connecting seat of this utility model;

[0019] Figure 4 This is an enlarged structural diagram of point A in this utility model.

[0020] In the diagram: 1. Outer frame, 2. Microcontroller, 3. Rotary shaft, 4. Width adjustment component, 41. Anti-detachment wheel, 42. Beveled chamfer, 43. Sprocket, 44. Chain, 45. Power component, 451. Ring seat, 452. Connecting seat, 453. Connecting plate, 454. Electro-hydraulic actuator, 455. Connecting rod, 456. Reinforcing rib, 46. Laser sensor, 5. Guide groove, 6. Guide bar. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This embodiment provides a technical solution: an anti-jamming chain width adjustment component, including a housing frame 1, with two longitudinally symmetrically distributed rotating shafts 3 rotatably connected between the left and right walls of the housing frame 1 via bearings; it also includes a microcontroller 2, located outside the housing frame 1, with its input terminal electrically connected to an external power supply; guide grooves 5 are provided on the outer side of each rotating shaft 3; the interior of each anti-detachment wheel 41 is slidably connected to the adjacent guide groove 5 via guide strips 6; the length data of the rotating shaft 3 is entered into the microcontroller 2; during the lateral movement of the anti-detachment wheel 41, it adaptively slides along the corresponding guide groove 5 via the guide strips 6; the sliding engagement between the guide strips 6 and the guide grooves 5 ensures that the subsequent anti-detachment wheel 41, sprocket 43 and corresponding rotating shaft 3 rotate synchronously.

[0023] The system also includes a width adjustment component 4. The width adjustment component 4 includes an anti-detachment wheel 41, a chamfered face 42, a sprocket 43, a chain 44, and a power component 45. The anti-detachment wheel 41 is slidably connected to the left and right ends of the outer side of the rotating shaft 3. The left and right ends of the anti-detachment wheel 41 are provided with chamfered faces 42, and the chamfered faces 42 are coated with a ceramic coating. The middle part of the anti-detachment wheel 41 is provided with a sprocket 43. Two longitudinally adjacent sprockets 43 are connected by a chain 44.

[0024] The anti-detachment wheel 41 and the outer casing 1 are each equipped with a power assembly 45. The power assembly 45 includes an annular seat 451, a connecting seat 452, a connecting plate 453, an electro-hydraulic actuator 454, and a connecting rod 455. The annular seats 451 are rotatably connected to the left and right sides of the anti-detachment wheel 41 through bearings. A connecting seat 452 is provided between two horizontally adjacent annular seats 451. A connecting plate 453 is provided on the lower side of each connecting seat 452. Two longitudinally symmetrically distributed electro-hydraulic actuators 454 are provided on the left and right walls of the outer casing 1. The input ends of the electro-hydraulic actuators 454 are all electrically connected to the output ends of the microcontroller 2, and the telescopic ends of the electro-hydraulic actuators 454 are all fixedly connected to the adjacent connecting plates 453 through connecting rods 455; the power assembly 45 also includes reinforcing ribs 456, which are respectively located on the side of the connecting plate 453 away from the lateral center of the outer casing 1; the width adjustment assembly 4 also includes laser sensors 46, which are respectively located on the side of the connecting plate 453 away from the lateral center of the outer casing 1, and the laser sensors 46 are all bidirectionally electrically connected to the microcontroller 2.

[0025] The ceramic coating is a high-performance wear-resistant polymer material obtained by combining high-performance wear-resistant particles (ceramics) with modified toughened heat-resistant resin. By applying a ceramic coating to the chamfered edge 42 of the anti-slip wheel 41, the wear resistance of the chamfered edge 42 itself is improved, the probability of sliding wear during the guiding contact between the chain 44 and the chamfered edge 42 is reduced, and the service life of the anti-slip wheel 41 is increased.

[0026] The working principle of this utility model is as follows:

[0027] The length data of the rotating shaft 3 is entered into the microcontroller 2. When the device is used to adjust the width of the chain 44 in the reflow oven (the two sprockets 43 on the front side are driven sprockets, and the two sprockets 43 on the rear side are driving sprockets), the distance data between the two chains 44 after lateral adjustment is entered into the microcontroller 2. At the same time, the microcontroller 2 starts the two electro-hydraulic push rods 454 on the left side so that their extension ends drive the corresponding anti-detachment wheel 41 on the right side to move synchronously along the outside of the rotating shaft 3 through the connecting rod 455, connecting plate 453, connecting seat 452 and 451 ring seat.

[0028] Simultaneously, during this process, the microcontroller 2 activates the laser sensor 46 on the right side. The laser sensor 46 emits a light signal to illuminate the right wall of the outer casing 1 and reflects it back to the initial position. Based on the propagation time and speed of the light signal, the lateral movement distance of the anti-detachment wheel 41 on the right side along the rotating shaft 3 is obtained, and this result is transmitted to the microcontroller 2 as an electrical signal. At the same time, the microcontroller 2 activates the two electro-hydraulic actuators 454 on the right side and the two laser sensors 46 on the left side. Using the same principle, the leftward movement distance of the two anti-detachment wheels 41 along the outer side of the rotating shaft 3 is measured, and this result is transmitted to the microcontroller 2 as an electrical signal. The microcontroller 2 combines the length data of the rotating shaft 3, the lateral adjustment distance data between the two chains 44, and the lateral movement distance of the anti-detachment wheels 41, so that when the lateral movement distance between two adjacent anti-detachment wheels 41 is the lateral adjustment distance between the two chains 44, the microcontroller 2 automatically closes the electro-hydraulic actuators 454, thereby realizing the automatic width adjustment operation between the two chains 44 in the reflow oven, which is convenient to operate.

[0029] During the lateral movement of the anti-slip wheel 41, it slides adaptively along the corresponding guide groove 5 via the guide bar 6. The sliding engagement between the guide bar 6 and the guide groove 5 ensures that the subsequent anti-slip wheel 41, sprocket 43, and corresponding shaft 3 rotate synchronously. The reinforcing rib 456 improves the structural strength of the connection between the connecting plate 453 and the connecting seat 452. During the synchronous lateral movement of two longitudinally adjacent sprockets 43, the meshing between the sprocket 43 and the chain 44 drives the corresponding chain 44 to move synchronously. During this process, the chamfer 42 on the anti-slip wheel 41 guides the position of the chain 44 on the sprocket 43 in that part, so that the chain 44 in that part is always in a meshing state with the sprocket 43 under the guidance of the guide component, avoiding the chain from derailing due to the asynchronous movement of the two sprockets on the chain during the lateral movement of the chain 44.

[0030] The ceramic coating is a high-performance wear-resistant polymer material obtained by combining high-performance wear-resistant particles (ceramics) with modified toughened heat-resistant resin. By applying a ceramic coating to the chamfered edge 42 of the anti-slip wheel 41, the wear resistance of the chamfered edge 42 itself is improved, the probability of sliding wear during the guiding contact between the chain 44 and the chamfered edge 42 is reduced, and the service life of the anti-slip wheel 41 is increased.

[0031] It is worth noting that the microcontroller 2 disclosed in the above embodiments can be a COP8CBE9, the electro-hydraulic actuator 454 can be a DYZW integral straight micro electro-hydraulic actuator, and the laser sensor 46 can be an EE-SB5-B reflective photoelectric sensor. The microcontroller 2 controls the operation of the electro-hydraulic actuator 454 and the laser sensor 46 using methods commonly used in the prior art.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A chain width adjustment assembly for preventing jamming, comprising a housing frame (1), wherein two longitudinally symmetrically distributed rotating shafts (3) are rotatably connected between the left and right walls of the housing frame (1) via bearings, characterized in that: It also includes a width adjustment component (4); The width adjustment component (4) includes an anti-detachment wheel (41), a chamfered surface (42), a sprocket (43), a chain (44), and a power component (45). The anti-detachment wheel (41) is slidably connected to the left and right ends of the outer side of the rotating shaft (3). The left and right ends of the anti-detachment wheel (41) are provided with chamfered surfaces (42). The middle part of the anti-detachment wheel (41) is provided with a sprocket (43). Two longitudinally adjacent sprockets (43) are connected by a chain (44). The anti-detachment wheel (41) and the outer frame (1) are provided with a power component (45).

2. The anti-jamming chain width adjustment component according to claim 1, characterized in that: It also includes a microcontroller (2), which is located outside the housing frame (1), and the input terminal of the microcontroller (2) is electrically connected to an external power supply.

3. The anti-jamming chain width adjustment component according to claim 2, characterized in that: The power assembly (45) includes an annular seat (451), a connecting seat (452), a connecting plate (453), an electro-hydraulic actuator (454), and a connecting rod (455). The annular seat (451) is rotatably connected to the left and right sides of the anti-detachment wheel (41) through bearings. A connecting seat (452) is provided between two horizontally adjacent annular seats (451). A connecting plate (453) is provided on the lower side of each connecting seat (452). Two longitudinally symmetrically distributed electro-hydraulic actuators (454) are provided on the left and right walls of the outer frame (1). The input end of each electro-hydraulic actuator (454) is electrically connected to the output end of the microcontroller (2). The telescopic end of each electro-hydraulic actuator (454) is fixedly connected to the adjacent connecting plate (453) through the connecting rod (455).

4. The anti-jamming chain width adjustment component according to claim 3, characterized in that: The power assembly (45) also includes reinforcing ribs (456), which are respectively disposed on the side of the connecting plate (453) away from the lateral center of the outer shell frame (1).

5. The anti-jamming chain width adjustment component according to claim 3, characterized in that: The width adjustment component (4) also includes a laser sensor (46), which is respectively located on the side of the connecting plate (453) away from the horizontal center of the outer casing (1). The laser sensor (46) is bidirectionally electrically connected to the microcontroller (2).

6. The anti-jamming chain width adjustment component according to claim 1, characterized in that: The outer side of each rotating shaft (3) is provided with a guide groove (5), and the interior of each anti-detachment wheel (41) is slidably connected to the adjacent guide groove (5) through a guide strip (6).

7. The anti-jamming chain width adjustment component according to claim 1, characterized in that: The beveled chamfer (42) is coated with a ceramic coating.

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