Swing mechanism for metal surface treatment

Abstract

The invention relates to the technical field of metal surface treatment equipment, in particular to a swinging mechanism for metal surface treatment, which comprises a driving device, a cam swinging device, a transmission device and a tray, the cam swinging device comprises a cam, a pull rod and a rocker arm, one end of the cam is fixedly connected to the output end of the driving device, and the other end of the cam is fixedly connected to the transmission device; the other end of the pull rod is hinged to one end of the rocker arm, the other end of the rocker arm is fixedly connected with the input end of the transmission device, and the output end of the transmission device is fixedly connected with the tray. According to the swinging mechanism for metal surface treatment, a workpiece is driven to perform periodic reciprocating swinging motion in the tank body, so that the contact effect of a treatment liquid and the surface of the workpiece is remarkably enhanced, and the quality and efficiency of metal surface treatment are improved; the quality problem caused by uneven distribution of the treating fluid on the surface of the workpiece can be effectively avoided, and it is ensured that the workpiece can uniformly and efficiently receive the effect of the treating fluid.

Description

Technical Field

[0001] The invention relates to the technical field of metal surface treatment equipment, and in particular to a swing mechanism used for metal surface treatment. Background Art

[0002] In the metal surface treatment industry, such as electrophoretic coating, pickling, pre-degreasing, neutralization and phosphating processes, in order to ensure that the workpiece can be treated with the treatment liquid evenly and efficiently, it is usually necessary to make the workpiece perform periodic reciprocating swinging motion in the tank. This action can not only enhance the contact effect between the treatment liquid and the workpiece surface, improve the treatment quality and efficiency, but also effectively avoid quality problems caused by uneven distribution of the treatment liquid on the workpiece surface.

[0003] However, traditional swing mechanisms often have problems such as complex structure, high maintenance cost, low driving efficiency and difficulty in achieving precise control, which limits their widespread application in industrial production.

[0004] In order to solve the above problems, the present invention proposes a swing mechanism for metal surface treatment. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a swing mechanism for metal surface treatment, which significantly enhances the contact effect between the treatment liquid and the workpiece surface by driving the workpiece to perform periodic reciprocating swinging motion in a trough body, thereby improving the quality and efficiency of metal surface treatment; it can effectively avoid quality problems on the workpiece surface caused by uneven distribution of the treatment liquid, and ensure that the workpiece can be evenly and efficiently affected by the treatment liquid.

[0006] The technical solution of the present invention is as follows: A rocking mechanism for metal surface treatment comprises a driving device, a cam rocking device, a transmission device and a tray, wherein the cam rocking device comprises a cam, a pull rod and a rocker arm, one end of the cam is fixedly connected to the output end of the driving device, the other end of the cam is hinged to one end of the pull rod, the other end of the pull rod is hinged to one end of the rocker arm, the other end of the rocker arm is fixedly connected to the input end of the transmission device, and the output end of the transmission device is fixedly connected to the tray.

[0007] The driving device is a swing drive reducer.

[0008] The horizontal distance between the center of the output end of the driving device and the center of the input end of the transmission device is 500×Cmm, and the vertical distance is 1025×Cmm; the distance between the connection center of the cam and the input end of the transmission device and the hinge point with the pull rod is 125×Cmm; the distance between the hinge points of the pull rod and the cam and the rocker arm is 1044×Cmm; the distance between the hinge point of the rocker arm and the pull rod and the connection center with the input end of the transmission device is 500×Cmm; Where: C is a non-zero constant between 0.5 and 2.

[0009] The swing angle of the cam swing device is adjustable.

[0010] The length of the tie rod or rocker arm can be adjusted online.

[0011] The pull rod or rocker arm adopts a length-adjustable combination structure, which includes a half body I and a half body II. A telescopic hole is provided at the end of the half body I. One end of the half body II cooperates with the telescopic hole and can slide in the telescopic hole. A telescopic driving mechanism for driving the half body II to slide is provided between the half body I and the half body II.

[0012] The length-adjustable assembly structure also includes a locking mechanism. When the length of the pull rod or the rocker arm is adjusted, the locking mechanism is loosened so that half body II can slide in the telescopic hole of half body I. When the length of the pull rod or the rocker arm is not adjusted, the locking mechanism is locked so that half body II cannot slide in the telescopic hole of half body I.

[0013] The locking mechanism comprises a friction block and a friction block driving device arranged in the telescopic hole for friction braking with the side surface of the half body II. The friction block is pressed against or away from the half body II under the action of the friction block driving device.

[0014] The transmission ratio of the transmission is adjustable.

[0015] The tray is provided with a buffer device.

[0016] The beneficial effects of the present invention are: 1. The present invention discloses a swing mechanism for metal surface treatment, which significantly enhances the contact effect between the treatment liquid and the workpiece surface by driving the workpiece to perform periodic reciprocating swinging motion in a trough body, thereby improving the quality and efficiency of metal surface treatment; it can effectively avoid quality problems on the workpiece surface caused by uneven distribution of the treatment liquid, and ensure that the workpiece can be evenly and efficiently affected by the treatment liquid.

[0017] 2. The present invention discloses a swing mechanism for metal surface treatment. Compared with the traditional swing mechanism, the swing mechanism for metal surface treatment proposed by the present invention is simpler in structure, reduces the use of complex components, and thus reduces maintenance costs; it not only improves the reliability and stability of the mechanism, but also makes maintenance and repair work more convenient.

[0018] 3. The present invention discloses a swing mechanism for metal surface treatment, which can conveniently adjust the swing angle to meet the needs of different metal surface treatment processes. For example, in some processes, a larger swing angle may be required to ensure that the treatment liquid can fully cover the workpiece surface; while in other processes, a smaller swing angle may be required to avoid unnecessary damage to the workpiece; by adjusting the swing angle, the mechanism can flexibly respond to various working conditions to ensure the best treatment effect.

[0019] 4. The present invention discloses a swing mechanism for metal surface treatment, which is provided with a buffer device, which can reduce the load impact and vibration borne by the swing drive reducer near the extreme position, thereby improving the stability and durability of the swing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0021] In the attached picture: Figure 1 It is a front view of a swing mechanism for metal surface treatment according to an embodiment of the present invention; Figure 2 A top view of a swing mechanism for metal surface treatment according to an embodiment of the present invention; Figure 3 It is a left view of a swing mechanism for metal surface treatment according to an embodiment of the present invention; Figure 4 for Figure 1 Enlarged view at A in the middle; Figure 5 It is a front view of a length-adjustable assembly structure of a swing mechanism for metal surface treatment according to an embodiment of the present invention; Figure 6 It is a left sectional view of a length-adjustable assembly structure of a swing mechanism for metal surface treatment according to an embodiment of the present invention; Figure 7 for Figure 6 Middle BB section view; Figure 8 It is a structural schematic diagram of a two-stage adjustable transmission mechanism of a swing mechanism for metal surface treatment according to an embodiment of the present invention; Fig. 9 It is a structural schematic diagram of a buffer device of a swing mechanism for metal surface treatment according to an embodiment of the present invention; The components represented by the reference numerals in the figure are: The present invention includes: 1. a swing drive reducer, 2. a swing drive reducer bracket, 3. a bracket support I, 4. a cam, 5. a pin shaft I, 6. a pull rod, 7. a bracket support II, 8. a bearing seat bracket I, 9. a bearing seat I, 10. a transmission shaft I, 11. a tray, 12. a bearing seat bracket II, 13. a transmission shaft II, 14. a pin shaft II, 15. a bracket support II, 16. a bolt, 17. a nut I, 18. an inclined washer, 19. a compression spring washer I, 20. a rocker arm, 21. a shaft sleeve, 22. a nut II, 23. a washer, 24. a compression spring washer II; 100. a length-adjustable assembly structure, 101. a half body I, 101a, a telescopic hole, 102. a half body II, 10 3. Slide plate I, 104, slide plate II, 105, rack, 106, gear, 107, length adjustment reducer, 108, piston rod, 109, friction block I, 110, friction block II, 111, cylinder body, 111a, intake and exhaust ports, 112, compression spring, 113, cylinder head, 200, two-stage adjustable transmission mechanism, 201, active transmission shaft, 202, passive transmission shaft, 203, gear sleeve, 203a, connecting sleeve, 203b, sector gear I, 203c, sector gear II, 203d, sector gear III, 300, buffer device, 301, guide sleeve, 302, buffer spring, 303, slider, 304, connecting rod, 305, rotating wheel. DETAILED DESCRIPTION

[0022] like Figures 1 to 4 As shown, the rocking mechanism for metal surface treatment includes a driving device, a cam rocking device, a transmission device and a tray 11.

[0023] The driving device adopts a swing drive reducer 1, whose output end is used to drive the cam 4 to rotate, thereby inducing subsequent swinging action. The selection of the swing drive reducer 1 ensures stable driving force output and precise speed control, providing a reliable power source for the entire swing mechanism.

[0024] The swing drive reducer 1 is fixedly mounted on the swing drive reducer bracket 2, and the swing drive reducer bracket 2 is fixedly mounted on the bracket support Ⅰ3 or the bracket support Ⅱ15 (since the driving device is arranged on both sides of the trough body, the bracket supports are arranged on both sides of the trough body).

[0025] The cam swing device is the core component for realizing the swing motion, including cam 4, tie rod 6 and rocker arm 20. One end of cam 4 is fixedly connected to the output end of the swing drive reducer 1, and the other end is hinged to one end of tie rod 6 through pin shaft Ⅰ5. The other end of tie rod 6 is connected to one end of rocker arm 20 through pin shaft Ⅱ14, sleeve 21, nut Ⅱ22, washer 23 and compression spring washer Ⅱ24 by hinged connection, while the other end of rocker arm 20 is fixedly connected to the input end of the transmission device; the transmission device includes transmission shaft Ⅰ10 and transmission shaft Ⅱ13 on both sides and matching bracket support Ⅱ7, bearing seat bracket Ⅰ8, bearing seat Ⅰ9, bearing seat bracket Ⅱ12, bolt 16, nut Ⅰ17, inclined washer 18 and compression spring washer Ⅰ19, etc.

[0026] The horizontal distance between the center of the output end of the driving device and the center of the input end of the transmission device is 500 mm, and the vertical distance is 1025×Cmm; the distance between the connection center of the cam 4 and the input end of the transmission device and the hinge point with the pull rod 6 is 125×Cmm; the distance between the hinge points of the pull rod 6 and the cam 4 and the rocker arm 20 is 1044×Cmm; the distance between the hinge point of the rocker arm 20 and the pull rod 6 and the connection center with the input end of the transmission device is 500×Cmm; Among them, C is a non-zero constant between 0.5 and 2, and the specific value can be adjusted according to actual use requirements to adapt to the size requirements of the cam swing device in different scenarios.

[0027] In order to meet the requirements of different metal surface treatment processes, the swing angle of the cam swing device in this embodiment can be adjusted. There are two ways, one is to adjust the length of the pull rod 6 or the rocker arm 20, which can achieve online stepless adjustment of the swing angle, and the other is to adjust the transmission ratio of the transmission device, which can only adjust a number of fixed swing angles after shutdown.

[0028] In the first swing angle adjustment method: The pull rod 6 and the rocker arm 20 both adopt a length-adjustable assembly structure, which includes a half body I and a half body II. A telescopic hole is provided at the end of the half body I, and one end of the half body II cooperates with the telescopic hole and can slide in the telescopic hole. In order to drive the half body II to slide, a telescopic driving mechanism is provided between the half body I and the half body II.

[0029] In order to ensure the stability of the pull rod 6 or the rocker arm 20 when swinging after adjusting the length, the length-adjustable assembly structure also includes a locking mechanism; the locking mechanism includes a friction block and a friction block driving device arranged in the telescopic hole for friction braking with the side of the half body II. When it is necessary to adjust the length of the pull rod 6 or the rocker arm 20, the friction block driving device drives the friction block away from the half body II, so that the half body II can slide freely in the telescopic hole; when the adjustment is completed, the friction block driving device drives the friction block to be close to the half body II to achieve the locking function.

[0030] Figures 5 to 7 The invention is a specific length-adjustable assembly structure 100, comprising a half body Ⅰ 101 and a half body Ⅱ 102. A square telescopic hole 101a is provided at the end of the half body Ⅰ 101. A slide plate Ⅰ 103 is fixedly installed on the four side walls of the telescopic hole 101a. A slide plate Ⅱ 104 matching with the slide plate Ⅰ 103 is fixedly installed on the outer periphery of the half body Ⅱ 102. The slide plates Ⅰ 103 and Ⅱ 104 are made of self-lubricating materials or lubricating oil grooves are processed thereon. The lubricating oil grooves are regularly filled with lubricating oil. Apply dry oil. The telescopic drive mechanism includes a rack 105, a gear 106 and a length-adjusting reducer 107. The rack 105 is fixed on the half body II 102, and the length-adjusting reducer 107 is fixed on the half body I 101. The gear 106 meshing with the rack 105 is fixedly connected to the output shaft of the length-adjusting reducer 107. The gear 106 is driven to rotate by the length-adjusting reducer 107 so that the half body II 102 slides in the telescopic hole 101a along with the rack 105.

[0031] The locking mechanism may be provided in multiple pieces, including a piston rod 108, a friction block I 109, a friction block II 110, a cylinder body 111, a compression spring 112 and a cylinder cover 113. The rod body portion of the piston rod 108 passes through the side wall of the half body I 101 in an airtight manner (such as using a sealing ring). The friction block driving device includes the piston rod 108, the cylinder body 111, the compression spring 112 and the cylinder cover 113. The friction block I 109 is fixedly connected to the end of the rod body, and the friction block II 110 is fixedly connected to the corresponding position of the half body II 102. The piston rod 108 The piston part of the cylinder body 111 is airtightly installed in the cylinder body 111, and the bottom of the cylinder body 111 is fixedly connected to the outside of the half body Ⅰ 101 in an airtight manner (such as using a sealing gasket). An air cavity is formed between the piston part of the piston rod 108 and the outside of the half body Ⅰ 101, and an air inlet and exhaust port 111a is provided in the air cavity. The air inlet and exhaust port 111a is connected to the compressed air source, and a cylinder cover 113 (non-airtight, that is, provided with a vent hole) is fixedly connected to the top opening of the cylinder body 111, and a plurality of compression springs 112 are installed between the cylinder cover 113 and the piston part of the piston rod 108.

[0032] In the second swing angle adjustment method: the transmission ratio of the transmission device can be adjusted from Figures 1 to 4It can be seen that the main component of the transmission device is the transmission shaft, and the two ends of the transmission shaft are fixedly connected to the rocker arm 20 and the tray 11 respectively. The transmission ratio of the transmission device can be changed to divide the transmission shaft into two parts, namely, the active transmission shaft fixedly connected to the rocker arm 20 and the passive transmission shaft fixedly connected to the tray 11. The active transmission shaft and the passive transmission shaft are rotatably mounted on the trough body through bearings respectively, and a two-level adjustable transmission mechanism is arranged between the active transmission shaft and the passive transmission shaft. Since the rocking action only requires a small part of the circumference to reciprocate, multiple groups of cooperation with different transmission ratios can be arranged on the circumference.

[0033] Figure 8 It is a specific two-stage adjustable transmission mechanism 200, including an active transmission shaft 201, a passive transmission shaft 202 and a gear sleeve 203. The gear sleeve 203 is composed of a combined gear body and a connecting sleeve 203a. The connecting sleeve 203a is connected to the active transmission shaft 201 or the passive transmission shaft 202 respectively by bolt connection. The combined gear body is composed of a sector gear I 203b, a sector gear II 203c and a sector gear III 203d. The sector gear I 203b or sector gear III 203d on the active side is meshed with the sector gear III 203d or sector gear I 203b on the passive side, and the sector gear II 203c on the active side is meshed with the sector gear II 203c on the passive side. When the transmission ratio needs to be adjusted, the connecting sleeve 203a is loosened, and the gear sleeve 203 is rotated to adjust to the required transmission ratio and then fixed.

[0034] The tray 11 is used to carry the metal workpiece to be processed. In order to reduce the load impact and vibration of the swing drive reducer near the limit position, thereby improving the stability and durability of the swing mechanism, a buffer device is provided on the tray 11.

[0035] Fig. 9 It is a specific buffer device 300, which is arranged below the two ends of the tray 11, and a guide sleeve 301 is fixed on the groove body, a slider 303 that can slide in the vertical direction along the guide sleeve 301 is arranged in the guide sleeve 301, a buffer spring 302 is arranged between the slider 303 and the groove body, a connecting rod 304 is fixedly connected to the top of the slider 303, and a rotating wheel 305 is rotatably installed on the upper end of the connecting rod 304. Since the movement trajectory of the tray 11 is not vertically up and down, the force generated by the movement of the tray 11 can be transmitted to the slider 303 through the rotating wheel 305, so that the slider 303 can still slide in the vertical direction in the guide sleeve 301 to compress the buffer spring 302. In addition, a cover is installed on the top of the guide sleeve 301, and the connecting rod 304 passes through the middle of the cover.

[0036] The swing mechanism for metal surface treatment significantly enhances the contact effect between the treatment liquid and the workpiece surface by driving the workpiece to perform periodic reciprocating swinging motion in the trough body, thereby improving the quality and efficiency of metal surface treatment; it can effectively avoid quality problems on the workpiece surface caused by uneven distribution of the treatment liquid, and ensure that the workpiece can be evenly and efficiently affected by the treatment liquid.

Claims

1. A swing mechanism for metal surface treatment, characterized in that: The invention comprises a driving device, a cam rocking device, a transmission device and a tray (11), wherein the cam rocking device comprises a cam (4), a pull rod (6) and a rocker arm (20), wherein one end of the cam (4) is fixedly connected to the output end of the driving device, the other end of the cam (4) is hinged to one end of the pull rod (6), the other end of the pull rod (6) is hinged to one end of the rocker arm (20), the other end of the rocker arm (20) is fixedly connected to the input end of the transmission device, and the output end of the transmission device is fixedly connected to the tray (11).

2. A swing mechanism for metal surface treatment according to claim 1, characterized in that: The driving device is a swing drive reducer (1).

3. The swing mechanism for metal surface treatment according to claim 1, characterized in that: The horizontal distance between the center of the output end of the driving device and the center of the input end of the transmission device is 500×Cmm, and the vertical distance is 1025×Cmm; the distance between the connection center of the cam (4) and the input end of the transmission device and the hinge point with the pull rod (6) is 125×Cmm; the distance between the hinge points of the pull rod (6) and the cam (4) and the rocker arm (20) is 1044×Cmm; the distance between the hinge point of the rocker arm (20) and the pull rod (6) and the connection center with the input end of the transmission device is 500×Cmm; Where: C is a non-zero constant between 0.5 and 2.

4. A swing mechanism for metal surface treatment according to claim 1 or 3, characterized in that: The swing angle of the cam swing device is adjustable.

5. The swing mechanism for metal surface treatment according to claim 4, characterized in that: The length of the pull rod (6) or the rocker arm (20) can be adjusted online.

6. The swing mechanism for metal surface treatment according to claim 5, characterized in that: The pull rod (6) or the rocker arm (20) adopts a length-adjustable assembly structure, which comprises a half body I and a half body II. A telescopic hole is provided at the end of the half body I. One end of the half body II cooperates with the telescopic hole and can slide in the telescopic hole. A telescopic driving mechanism for driving the half body II to slide is provided between the half body I and the half body II.

7. A swing mechanism for metal surface treatment according to claim 6, characterized in that: The length-adjustable assembly structure further comprises a locking mechanism. When the length of the pull rod (6) or the rocker arm (20) is adjusted, the locking mechanism is released so that the half body II can slide in the telescopic hole of the half body I. When the length of the pull rod (6) or the rocker arm (20) is not adjusted, the locking mechanism is locked so that the half body II cannot slide in the telescopic hole of the half body I.

8. The swing mechanism for metal surface treatment according to claim 7, characterized in that: The locking mechanism comprises a friction block and a friction block driving device arranged in the telescopic hole for friction braking with the side surface of the half body II. The friction block is pressed against or away from the half body II under the action of the friction block driving device.

9. A swing mechanism for metal surface treatment according to claim 1 or 3, characterized in that: The transmission ratio of the transmission device is adjustable.

10. A swing mechanism for metal surface treatment according to claim 1 or 3, characterized in that: The tray (11) is provided with a buffer device.

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