Automatic bearing crank press-fitting equipment for belt pulley assembly

Abstract

The utility model relates to an automatic bearing crank press fitting device for belt pulley assembly, which comprises a rack, a shell positioning lifting mechanism is arranged on the rack, and the shell positioning lifting mechanism comprises a linear sliding table, a supporting plate, a follow-up sliding table, a positioning air cylinder and a positioning plate. A side plate and a portal frame are fixedly connected to the portion, located beside the shell positioning lifting mechanism, of the rack, a pressing machine is arranged on the portal frame, a crank carrier and a bearing carrier are oppositely arranged on a movable table and the side plate of the pressing machine, and the bearing carrier comprises a sleeve, a center positioning rod and a spring. The center positioning rod is connected with the sleeve in a sliding mode, and one end of the center positioning rod extends out of the sleeve. The bearing and crank press-fitting device has the advantages that automatic press-fitting of a bearing and a crank can be achieved on one device, and the assembling efficiency and the machining quality of belt pulleys at the two ends of a shell are improved.

Description

An automatic pressing device for bearing cranks in belt pulley assembly Technical Field

[0001] This utility model relates to the field of bearing assembly equipment, specifically to an automatic bearing crank press-fitting device for belt pulley assembly. Background Technology

[0002] An exercise bike is a common indoor aerobic fitness equipment that helps users improve their cardiovascular function, burn fat, and strengthen their lower limbs by simulating cycling. The pedal structure of an exercise bike mainly consists of a shell, a belt drive mechanism located inside the shell, bearings, and cranks.

[0003] During assembly and processing, bearings and cranks need to be pressed onto the pulley. Currently, the pressing of bearings and cranks on exercise bikes requires assembly on multiple machines. Therefore, when processing the pulley, the pulley needs to undergo multiple clamping actions. Thus, an automatic bearing and crank pressing device for pulley assembly is needed. Summary of the Invention

[0004] The purpose of this utility model is to provide an automatic pressing device for bearings and cranks for belt pulley assembly, which can realize the automatic pressing of bearings and cranks on one machine, thereby improving the assembly efficiency and processing quality of belt pulleys at both ends of the housing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic bearing crank pressing device for belt pulley assembly, comprising a frame, on which a housing positioning and lifting mechanism is provided, the housing positioning and lifting mechanism comprising a linear slide, a support plate, a follower slide, a positioning cylinder and a positioning plate, a side plate and a gantry frame fixedly connected to the side of the housing positioning and lifting mechanism on the frame, a pressing machine being provided on the gantry frame, a crank carrier and a bearing carrier being arranged opposite to each other on the moving platform and the side plate of the pressing machine, the bearing carrier comprising a sleeve, a central positioning rod and a spring, the central positioning rod being slidably connected to the sleeve, one end of the central positioning rod extending to the outside of the sleeve, a misalignment cylinder being fixedly connected to the side plate beside the bearing carrier, and a pressing baffle being fixedly connected to the piston rod of the misalignment cylinder.

[0006] Furthermore, the linear slide is fixedly connected to the frame, the support plate is fixedly connected to the moving platform of the linear slide, the follower slide is slidably connected to the support plate, a tension spring is provided between the follower slide and the support plate, the positioning cylinder is fixedly connected to the follower slide, and the positioning plate is fixedly connected to the piston rod of the positioning cylinder.

[0007] Furthermore, there are two positioning cylinders, and the two positioning cylinders are located on both sides of the follower slide, and the positioning plate is provided with a V-shaped groove.

[0008] Furthermore, the two crank carriers are respectively fixedly connected to the moving platform and side plate of the press machine, and the crank carriers are provided with a first positioning groove and a second positioning groove.

[0009] Furthermore, the sleeves of the two bearing carriers are respectively fixedly connected to the moving table and side plate of the press machine, and the spring is located between the sleeve and the central positioning rod.

[0010] Furthermore, the central positioning rod is provided with an annular protrusion, the sleeve is provided with a relief groove corresponding to the annular protrusion, and one end of the spring abuts against the annular protrusion.

[0011] The beneficial effects of this utility model are as follows: the combination of the housing positioning and lifting mechanism, the press machine, the crank carrier and the bearing carrier enables the automated press-fitting of the bearing and the crank on one machine, improving the assembly efficiency and processing quality of the pulleys at both ends of the housing. Attached Figure Description

[0012] Figure 1 is an isometric schematic diagram of this utility model.

[0013] Figure 2 is a schematic diagram of the housing positioning and lifting mechanism of this utility model.

[0014] Figure 3 is a schematic diagram of the moving platform of the press-fitting machine of this utility model.

[0015] Figure 4 is a schematic diagram of the bearing carrier of this utility model.

[0016] Figure 5 is a cross-sectional view of the bearing carrier of this utility model.

[0017] Figure 6 is a schematic diagram of the side plate structure of this utility model.

[0018] In the diagram: 1. Frame; 201. Linear slide; 202. Support plate; 203. Follower slide; 204. Positioning cylinder; 205. Positioning plate; 3. Side plate; 4. Gantry frame; 5. Press machine; 6. Crank carrier; 601. First positioning groove; 602. Second positioning groove; 7. Bearing carrier; 701. Sleeve; 702. Center positioning rod; 703. Spring; 8. Misalignment cylinder; 801. Press baffle. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0020] Example:

[0021] Referring to Figures 1-6, an automatic bearing crank pressing device for belt pulley assembly includes a frame 1. A housing positioning and lifting mechanism is provided on the frame 1. The housing positioning and lifting mechanism includes a linear slide 201, a support plate 202, a follower slide 203, a positioning cylinder 204, and a positioning plate 205. A side plate 3 and a gantry frame 4 are fixedly connected to the frame 1 next to the housing positioning and lifting mechanism. A pressing machine 5 is provided on the gantry frame 4. A crank carrier 6 and a bearing carrier 7 are arranged opposite to each other on the moving platform of the pressing machine 5 and the side plate 3. The bearing carrier 7 includes a sleeve 701, a central positioning rod 702, and a spring 703. The central positioning rod 702 is slidably connected to the sleeve 701. One end of the central positioning rod 702 extends to the outside of the sleeve 701. A misalignment cylinder 8 is fixedly connected to the side plate 3 next to the bearing carrier 7. A pressing baffle 801 is fixedly connected to the piston rod of the misalignment cylinder 8.

[0022] The linear slide 201 drives the support plate 202 to move up and down. The follower slide 203 is slidably connected to the support plate 202. A tension spring is provided between the follower slide 203 and the support plate 202 to prevent damage to the workpiece caused by rigid pressing. The extension and retraction of the piston rod of the positioning cylinder 204 drives the positioning plate 205 to move up and down. The positioning plate 205 is provided with a V-groove, which is used to position the shaft of the pulley on the housing.

[0023] A first positioning groove 601 and a second positioning groove 602 are formed on the crank carrier 6. The first positioning groove 601 and the second positioning groove 602 are used to position and place the crank. The sleeves 701 of the two bearing carriers 7 are fixedly connected to the moving table and the side plate 3 of the press machine 5, respectively. The spring 703 is located between the sleeve 701 and the central positioning rod 702. The spring 703 is used to reset the central positioning rod 702. The part of the central positioning rod 702 that extends out of the sleeve 701 is used to position and place the bearing. An annular protrusion is provided on the central positioning rod 702. The sleeve 701 is provided with a relief groove corresponding to the annular protrusion. One end of the spring 703 abuts against the annular protrusion, and the spring is compressed by the sliding of the annular protrusion.

[0024] The working principle of this utility model is as follows: When in use, firstly, the piston rod of the positioning cylinder 204 extends, and the positioning plate 205 rises. Then, the housing is placed along the V-groove of the positioning plate 205. After the bearing is positioned on the center positioning rod 702 of the right bearing carrier, the support plate 202 is moved up and down to the bearing assembly station by the linear slide table 201. At this time, the piston rod of the misalignment cylinder 8 extends, and the pressing baffle 801 slides to the side of the bearing carrier 7 on the side plate 3. Then, the bearing carrier 7 on its moving table is driven by the pressing machine 5 to slide towards the side plate 3. During the sliding process, the shaft of the housing pulley will push inward. The center positioning rod 702 is used to transfer the bearing onto the shaft. During the subsequent sliding stroke, the bearing 7 is fully pressed onto the shaft by the sleeve 701. Then, the left bearing is pressed. The piston rod of the misaligned cylinder 8 is retracted and reset. Then, the bearing is placed on the center positioning rod 703 of the bearing carrier 7 on the side plate 3. The bearing pressing action is repeated to complete the pressing of the left bearing. After that, the crank is pressed. The crank 6 is placed on the crank carrier 6. The housing is driven to rise to the crank pressing position by the linear slide table 201. The crank carrier 6 on the moving table is driven by the press machine 5 to slide towards the side plate to press the crank onto the bearing.

[0025] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be understood as being within the protection scope of the present invention.

Claims

1. An automatic bearing crank pressing device for belt pulley assembly, characterized in that: The system includes a frame (1), on which a housing positioning and lifting mechanism is provided. The housing positioning and lifting mechanism includes a linear slide (201), a support plate (202), a follower slide (203), a positioning cylinder (204), and a positioning plate (205). A side plate (3) and a gantry frame (4) are fixedly connected to the side of the housing positioning and lifting mechanism on the frame (1). A pressing machine (5) is provided on the gantry frame (4). The moving platform of the pressing machine (5) and the side plate (3) are respectively arranged opposite to each other. There is a crank carrier (6) and a bearing carrier (7). The bearing carrier (7) includes a sleeve (701), a center positioning rod (702) and a spring (703). The center positioning rod (702) is slidably connected to the sleeve (701). One end of the center positioning rod (702) extends to the outside of the sleeve (701). A misalignment cylinder (8) is fixedly connected to the side plate (3) next to the bearing carrier (7). A press-fit baffle (801) is fixedly connected to the piston rod of the misalignment cylinder (8).

2. The automatic bearing crank pressing equipment for belt pulley assembly according to claim 1, characterized in that: The linear slide (201) is fixedly connected to the frame (1), the support plate (202) is fixedly connected to the moving platform of the linear slide (201), the follower slide (203) is slidably connected to the support plate (202), a tension spring is provided between the follower slide (203) and the support plate (202), the positioning cylinder (204) is fixedly connected to the follower slide (203), and the positioning plate (205) is fixedly connected to the piston rod of the positioning cylinder (204).

3. The automatic bearing crank pressing equipment for belt pulley assembly according to claim 2, characterized in that: There are two positioning cylinders (204), and the two positioning cylinders (204) are located on both sides of the follower slide (203). The positioning plate (205) is provided with a V-shaped groove.

4. The automatic bearing crank pressing equipment for belt pulley assembly according to claim 1, characterized in that: The two crank carriers (6) are fixedly connected to the moving platform and side plate (3) of the press machine (5) respectively, and the crank carriers (6) have a first positioning groove (601) and a second positioning groove (602).

5. The automatic bearing crank pressing equipment for belt pulley assembly according to claim 1, characterized in that: The sleeves (701) of the two bearing carriers (7) are fixedly connected to the moving platform and side plate (3) of the press machine (5) respectively, and the spring (703) is located between the sleeve (701) and the center positioning rod (702).

6. The automatic bearing crank pressing equipment for belt pulley assembly according to claim 5, characterized in that: The central positioning rod (702) is provided with an annular protrusion, the sleeve (701) is provided with a relief groove corresponding to the annular protrusion, and one end of the spring (703) abuts against the annular protrusion.

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