A multi-stage adjustable speed transmission mechanism

Abstract

The utility model relates to a multi-section adjustable speed transmission mechanism, including an inlet transmission section, a vacuum chamber front transmission section, a vacuum chamber internal transmission section, a vacuum chamber rear transmission section and an outlet transmission section connected in sequence, each transmission section includes a support assembly, a guide rail assembly, a speed sensor, a transmission shaft, a chain, a servo motor, a transmission gear and a controller, the guide rail assembly, the speed sensor and the transmission shaft are installed on the support assembly, the chain is sleeved on the transmission shaft and the servo motor output shaft, the transmission shaft cooperates with the guide rail assembly through the transmission gear, and the controller is electrically connected to the speed sensor and the servo motor. Compared with the prior art, the utility model has the advantages that the speed of each transmission section can be adjusted to meet the production needs of different sections and improve the production efficiency of products; the width of the guide rail is adjustable to meet the products of different shapes; each transmission section is detachably connected to facilitate installation; the auxiliary support mechanism can support the longer guide rail, etc.

Description

Technical Field

[0001] The utility model relates to a transmission mechanism, in particular to a multi-stage speed-adjustable transmission mechanism. Background Art

[0002] With the widespread application of vacuum reflow soldering furnaces in the SMT and semiconductor industries, the requirements for them are becoming higher and higher. In existing equipment, the transmission speed has an impact on the production capacity, heating time and cooling time per unit time. At the same time, when in use, the set speed cannot adjust the heating or cooling time, and the relative production capacity is also fixed and cannot adapt to changes in production needs.

[0003] After searching, the application publication number CN108502448A discloses a transmission mechanism for loading battery cells, which specifically discloses: a driving wheel and a driven wheel are respectively arranged at both ends of the transmission device, and the driving wheel and the driven wheel are connected by a transmission belt, and the transmission belt is provided with transmission belt air holes, and a vacuum plate is arranged under the transmission belt. The negative pressure in the vacuum cavity of the vacuum plate acts on the battery cell placed on the transmission belt through the transmission belt air holes.

[0004] However, the prior art cannot automatically adjust the transmission speed of the transmission mechanism, nor does it have a multi-stage structure. Therefore, how to design a multi-stage transmission mechanism with automatically adjustable transmission speed is a technical problem that needs to be solved. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-stage adjustable speed transmission mechanism in order to overcome the defect of the transmission mechanism of the prior art having a single transmission speed.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] According to one aspect of the utility model, a multi-section adjustable speed transmission mechanism is provided, comprising an import transmission section, a vacuum chamber front transmission section, a vacuum chamber internal transmission section, a vacuum chamber rear transmission section and an export transmission section connected in sequence, wherein the import transmission section, the vacuum chamber front transmission section, the vacuum chamber internal transmission section, the vacuum chamber rear transmission section and the export transmission section all comprise a support assembly, a guide rail assembly, a speed sensor, a transmission shaft, a chain, a servo motor, a transmission gear and a controller, wherein the guide rail assembly, the speed sensor and the transmission shaft are mounted on the support assembly, the chain is sleeved on the transmission shaft and the servo motor output shaft, the transmission shaft cooperates with the guide rail assembly through the transmission gear, and the controller is electrically connected to the speed sensor and the servo motor.

[0008] As a preferred technical solution, the support assembly includes a first support plate, a second support plate and a support shaft, the first support plate and the second support plate are respectively installed at both ends of the support shaft, and the transmission shaft is rotatably installed between the first support plate and the second support plate.

[0009] As a preferred technical solution, there are two support shafts, which are respectively arranged at the two ends of the first support plate and the second support plate.

[0010] As a preferred technical solution, the guide rail assembly is divided into two sets, including guide rails, driven wheels and conveying chains. One end of the two guide rails is respectively connected to the two ends of the support assembly, and the other end is equipped with driven wheels. The conveying chain is mounted on the driven wheels and the transmission gear.

[0011] As a preferred technical solution, the guide rail includes a guide rail support plate and a guide rail body. The guide rail body is a long strip structure, one end of which is connected to the guide rail support plate; the two guide rail support plates are respectively connected to the two ends of the support assembly.

[0012] As a preferred technical solution, the support assembly also includes a screw rod, and the guide rail assembly also includes a width adjustment gear, a width adjustment chain and a width adjustment motor. One of the guide rail support plates is installed in cooperation at one end of the screw rod, and the other guide rail support plate is installed at the other end of the screw rod. The width adjustment gear is fixedly installed at one end of the screw rod, and the width adjustment chain is sleeved on the width adjustment gear and the output shaft of the width adjustment motor.

[0013] As a preferred technical solution, the guide rail assembly further includes an auxiliary wheel, the auxiliary wheel is mounted on the guide rail support plate, and the conveying chain crosses the auxiliary wheel.

[0014] As a preferred technical solution, one end where the inlet transmission section, the transmission section before the vacuum chamber, the transmission section inside the vacuum chamber, the transmission section after the vacuum chamber and the outlet transmission section are connected to each other is provided with a mounting hole, and a fastener fixes the adjacent transmission sections through the mounting hole.

[0015] As a preferred technical solution, the transmission mechanism further includes a sensor bracket, and the speed sensor is mounted on the guide rail support plate through the sensor bracket and is located on a side of the transmission chain away from the ground.

[0016] As a preferred technical solution, the mechanism also includes a guide rail auxiliary support mechanism installed on a side of the guide rail assembly close to the ground.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1) The utility model includes multiple transmission sections, and the speed of each transmission section can be detected by a speed sensor and adjusted by a controller and a servo motor to meet the production requirements of different sections and improve product production efficiency;

[0019] 2) The guide rail assembly of the utility model is provided with a width adjustment gear, a width adjustment chain and a width adjustment motor, which can adjust the distance between the two guide rails to adapt to products of different shapes;

[0020] 3) The transmission sections of the utility model are all detachably connected, which is easy to install; the auxiliary wheels can adjust the position where the conveyor chain passes, and enhance the stability of the chain movement; the auxiliary support mechanism can support the longer guide rails. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a multi-stage adjustable speed transmission mechanism of the utility model;

[0022] Figure 2 This is an exploded diagram of a multi-stage adjustable speed transmission mechanism of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the front transmission section of the vacuum chamber of the utility model;

[0024] The numbers in the figure show:

[0025] 1. Import transmission section, 2. Transmission section in front of vacuum chamber, 3. Transmission section in vacuum chamber, 4. Transmission section after vacuum chamber, 5. Export transmission section, 60. First support plate, 61. Second support plate, 62. Support shaft, 63. Screw, 70. Guide rail, 700. Guide rail support plate, 701. Guide rail body, 71. Driven wheel, 72. Conveying chain, 73. Width adjustment gear, 74. Width adjustment chain, 75. Width adjustment motor, 76. Auxiliary wheel, 8. Speed ​​sensor, 9. Transmission shaft, 10. Chain, 11. Servo motor, 12. Transmission gear, 13. Sensor bracket, 14. Guide rail auxiliary support mechanism. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0027] like Figure 1 and Figure 2As shown, the utility model provides a multi-stage adjustable speed transmission mechanism, including multiple transmission sections and a guide rail auxiliary support mechanism 14, wherein the multiple transmission sections are specifically an inlet transmission section 1, a vacuum chamber front transmission section 2, a vacuum chamber internal transmission section 3, a vacuum chamber rear transmission section 4, and an outlet transmission section 5. Each transmission section includes a support assembly, a guide rail assembly, a speed sensor 8, a transmission shaft 9, a chain 10, a servo motor, a transmission gear 12, and a controller. An installation hole is provided at one end where the inlet transmission section 1, the vacuum chamber front transmission section 2, the vacuum chamber internal transmission section 3, the vacuum chamber rear transmission section 4, and the outlet transmission section 5 are connected to each other, and a fastener fixes the adjacent transmission sections through the installation hole.

[0028] like Figure 3 As shown, the support assembly includes a first support plate 60, a second support plate 61, a support shaft 62 and a screw rod 63. There are two support shafts 62, and the two ends of the support shaft 62 and the screw rod 63 are respectively mounted on the first support plate 60 and the second support plate 61. The two support shafts 62 are respectively supported at the two ends of the first support plate 60 and the second support plate 61, and the overall support is more stable; the two ends of the transmission shaft 9 are also respectively mounted on the first support plate 60 and the second support plate 61. The transmission gear 12 is mounted on the transmission shaft 9, and the chain 10 is sleeved on the transmission shaft 9 and the output shaft of the servo motor. After the servo motor is started, the transmission shaft 9 rotates driven by the chain 10, and the transmission gear 12 on the transmission shaft 9 rotates, driving the conveying chain 72 to move.

[0029] There are two sets of guide rail assemblies, including guide rails 70, driven wheels 71, conveying chains 72, auxiliary wheels 76, width adjustment gears 73, width adjustment chains 74 and width adjustment motors 75. The guide rails 70 include guide rail support plates 700 and guide rail bodies 701, one or two guide rail support plates 700 are provided with matching holes, and the matching holes are provided with threads matching with the screw rod 63. When the screw rod 63 rotates, the guide rail support plates 700 move horizontally along the screw rod 63, and the two guide rail support plates 700 are respectively installed on both sides of the screw rod 63. The guide rail body 701 is in the shape of a long strip, one end of which is connected to the guide rail support plate 700, and the other end of which is equipped with a driven wheel 71. The conveying chain 72 is mounted on the transmission gear 12, the driven wheel 71 and the auxiliary wheel 76. When the transmission gear 12 rotates, the conveying chain 72 moves to realize product transportation. The auxiliary wheel 76 is installed on the guide rail support plate 700 and is used to tighten the chain 10 or change the direction of the chain 10 so that the chain 10 adapts to the shape of the guide rail support plate 700 and the guide rail body 701. The width adjusting gear 73 is fixedly mounted on one end of the screw rod 63 and is located on the outside of the first support plate 60 or the second support plate 61. The width adjusting chain 74 is sleeved on the width adjusting gear 73 and the output shaft of the width adjusting motor 75. After the width adjusting motor 75 is started, the width adjusting gear 73 rotates driven by the width adjusting chain 74, and the screw rod 63 fixedly connected to the width adjusting gear 73 rotates, driving the guide rail support plate 700 matched with the screw rod 63 to move, thereby adjusting the distance between the two guide rail support plates 700.

[0030] The controller is electrically connected to the speed sensor 8 and the servo motor. The speed sensor 8 is installed on the guide rail support plate 700 through the sensor bracket 13, and is located above the transmission chain 10. It detects the transmission speed of the transmission chain 10 and sends the detected data to the controller. The controller adjusts the speed of the servo motor according to the set speed.

[0031] The guide rail auxiliary support mechanism 14 is installed on the side of the guide rail assembly close to the ground, and is used to support the guide rail 70 when the guide rail 70 is long.

[0032] The installation and working process of this utility model is as follows:

[0033] First, assemble two guide rail support plates 700 with two support shafts 62, install the transmission shaft 9 and the screw 63 between the first support plate 60 and the second support plate 61, connect the transmission shaft 9 and the output shaft of the servo motor through the chain 10, and transmit the rotation of the transmission shaft 9 to the conveying chain 72 through the transmission gear 12, install the two guide rail support plates 700 on the support shaft 62, install the two guide rails 70 on the two guide rail support plates 700 respectively, and install the speed sensor 8 on the guide rail support plate 700 through the sensor bracket 13. Then connect the width adjustment motor 75 and the width adjustment gear 73 through the chain 10 to realize the movement of the movable guide rail support plate 700 to adapt to products of different widths. Connect the assembled inlet transmission section 1 and the vacuum chamber front transmission section 2 through fasteners; connect the vacuum chamber rear transmission section 4 and the outlet transmission section 5 through fasteners, and install them in the vacuum reflow soldering furnace respectively. At the same time, the vacuum chamber transmission section 3 is installed in the vacuum chamber of the vacuum reflow soldering furnace by fasteners.

[0034] The speed of each transmission section is set. When the product enters the transmission section 2 before the vacuum chamber from the inlet transmission section 1, the speed sensor 8 will continue to detect until the product completely enters the transmission section 2 before the vacuum chamber. At this time, the transmission section 2 before the vacuum chamber matches the speed according to the setting and transmits the product to the next section; when the product reaches the transmission section 3 in the vacuum chamber and completes the corresponding vacuum operation, it is transmitted again according to the set speed to send the product to the transmission section 4 after the vacuum chamber. When the speed sensor 8 continues to detect until the product completely enters the outlet transmission section 5, the outlet transmission section 5 will match the speed according to the setting until the product is completely transmitted to the outlet to complete the production.

[0035] The utility model has a modular structure and is easy to install: each section of the mechanism can be connected with screws and is easy to install in a vacuum reflow furnace; it has strong flexibility and compatibility: it can be applied to different types of reflow furnaces; the mechanism operates stably and smoothly: it will not cause product vibration or jamming. The utility model can improve product quality and production capacity, can effectively improve production capacity, and achieve the required heating and cooling time in the corresponding transmission section.

[0036] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A multi-stage adjustable speed transmission mechanism, characterized in that: The invention comprises an inlet transmission section (1), a vacuum chamber front transmission section (2), a vacuum chamber inner transmission section (3), a vacuum chamber rear transmission section (4) and an outlet transmission section (5) which are connected in sequence. The inlet transmission section (1), the vacuum chamber front transmission section (2), the vacuum chamber inner transmission section (3), the vacuum chamber rear transmission section (4) and the outlet transmission section (5) all comprise a support assembly, a guide rail assembly, a speed sensor (8), a transmission shaft (9), a chain (10), a servo motor, a transmission gear (12) and a controller. The guide rail assembly, the speed sensor (8) and the transmission shaft (9) are mounted on the support assembly. The chain (10) is sleeved on the transmission shaft (9) and the servo motor output shaft. The transmission shaft (9) cooperates with the guide rail assembly through the transmission gear (12). The controller is electrically connected to the speed sensor (8) and the servo motor.

2. A multi-stage adjustable speed transmission mechanism according to claim 1, characterized in that: The support assembly comprises a first support plate (60), a second support plate (61) and a support shaft (62); the first support plate (60) and the second support plate (61) are respectively mounted at both ends of the support shaft (62); and the transmission shaft (9) is rotatably mounted between the first support plate (60) and the second support plate (61).

3. A multi-stage adjustable speed transmission mechanism according to claim 2, characterized in that: There are two support shafts (62), which are respectively arranged at the two ends of the first support plate (60) and the second support plate (61).

4. A multi-stage adjustable speed transmission mechanism according to claim 1, characterized in that: The guide rail assembly is composed of two sets, including guide rails (70), driven wheels (71) and conveying chains (72). One end of the two guide rails (70) is respectively connected to the two ends of the support assembly, and the other end is installed with driven wheels (71). The conveying chain (72) is sleeved on the driven wheels (71) and the transmission gear (12).

5. A multi-stage adjustable speed transmission mechanism according to claim 4, characterized in that: The guide rail (70) comprises a guide rail support plate (700) and a guide rail body (701); the guide rail body (701) is a long strip structure, one end of which is connected to the guide rail support plate (700); the two guide rail support plates (700) are respectively connected to the two ends of the support assembly.

6. A multi-stage adjustable speed transmission mechanism according to claim 5, characterized in that: The support assembly further comprises a screw rod (63), and the guide rail assembly further comprises a width adjustment gear (73), a width adjustment chain (74) and a width adjustment motor (75). One of the guide rail support plates (700) is mounted on one end of the screw rod (63), and the other guide rail support plate (700) is mounted on the other end of the screw rod (63). The width adjustment gear (73) is fixedly mounted on one end of the screw rod (63), and the width adjustment chain (74) is sleeved on the width adjustment gear (73) and the output shaft of the width adjustment motor (75).

7. A multi-stage adjustable speed transmission mechanism according to claim 5, characterized in that: The guide rail assembly further comprises an auxiliary wheel (76), wherein the auxiliary wheel (76) is mounted on the guide rail support plate (700), and the conveying chain (72) crosses the auxiliary wheel (76).

8. The multi-stage adjustable speed transmission mechanism according to claim 1, characterized in that: One end where the inlet transmission section (1), the vacuum chamber front transmission section (2), the vacuum chamber interior transmission section (3), the vacuum chamber rear transmission section (4) and the outlet transmission section (5) are connected to each other is provided with a mounting hole, and a fastener fixes the adjacent transmission sections through the mounting hole.

9. The multi-stage adjustable speed transmission mechanism according to claim 1, characterized in that: The transmission mechanism also includes a sensor bracket (13), and the speed sensor (8) is mounted on the guide rail support plate (700) through the sensor bracket (13) and is located on a side of the transmission chain (10) away from the ground.

10. The multi-stage adjustable speed transmission mechanism according to claim 1, characterized in that: The mechanism also includes a guide rail auxiliary support mechanism (14) which is installed on one side of the guide rail assembly close to the ground.

Images