A precision assembly apparatus, system, and method for a housing and a leaf spring.

Abstract

This invention discloses a precision assembly device, system, and method for a housing and a leaf spring. The precision assembly device includes: a positioning module; a pin output module; and a pressing module for applying pressure to the leaf spring. The pressing module includes a first pressing module and a second pressing module. The first pressing module faces the outer side of the leaf spring and has a first working state and a second working state. In the first working state, the first pressing module pushes the second end of the leaf spring to align with the pin output module. In the second working state, the first pressing module pushes the leaf spring into the mounting groove of the housing. The second pressing module is located above the leaf spring and presses down on the outer side of the leaf spring to press it firmly into the mounting groove. The precision assembly device of this invention provides accurate positioning, relatively stable assembly, and a high degree of automation.

Description

Technical Field

[0001] This invention relates to the field of automated processing technology, and specifically to a precision assembly device, system and method for a housing and a leaf spring. Background Technology

[0002] In the assembly process of mechanical products, the precise assembly of leaf springs and housings is one of the key steps to ensure product performance. Leaf springs, through their own elastic deformation, can effectively absorb and isolate vibrations and impacts. Existing leaf springs are usually semi-circular structures with round holes at both ends. One end connects to the first end of the housing, while the other end is connected to the second end of the housing via a pin.

[0003] Currently, the assembly of the leaf spring and the second end of the housing is mostly done manually or with semi-automated equipment, which has the following problems: The curved structure of the leaf spring has springback and displacement in its natural state, making it difficult to maintain stability during assembly, resulting in misalignment between the lower end hole and the groove of the housing; the assembly includes multiple sub-steps such as "pre-tightening", "pin insertion", and "final pressing", and it is difficult for manual or simple equipment to ensure the precise coordination of the force, sequence and position of each step, which can easily cause the pin to bend, the leaf spring to be scratched or the assembly to be incomplete; the connection between each process is not smooth and the degree of automation is low, resulting in low assembly efficiency and failing to meet the needs of mass production. Summary of the Invention

[0004] To solve at least one of the above-mentioned technical problems, the present invention provides a precision assembly device and method for housing and leaf spring, which has accurate positioning, relatively stable assembly and a high degree of automation.

[0005] The present invention also provides a precision assembly system for the housing and leaf spring, which has high working efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A precision assembly device for a housing and a leaf spring, comprising:

[0008] A positioning module, used to limit the position of the housing;

[0009] A pin output module is used to output a pin to the second end of the leaf spring;

[0010] A pressing module is used to apply pressure to the leaf spring. The pressing module includes a first pressing module and a second pressing module. The first pressing module faces the outer side of the leaf spring and has a first working state and a second working state. In the first working state, the first pressing module pushes the second end of the leaf spring to align with the pin output module. In the second working state, the first pressing module pushes the leaf spring into the mounting groove of the housing. The second pressing module is located above the leaf spring and presses down on the outer side of the leaf spring to press it firmly into the mounting groove.

[0011] In a preferred embodiment, the first pushing module includes an electric cylinder, a first push plate, and a second push plate. The second push plate is inclined, and the first push plate and the second push plate are connected by a roller. The second push plate is in contact with the second end of the leaf spring.

[0012] In a preferred embodiment, the second push plate has a protrusion, and in the first working state and the second working state, the lower surface of the protrusion and the second end of the leaf spring are in close contact.

[0013] In a preferred embodiment, the second pressing module includes a cylinder, a slider connected to the cylinder, and a push rod connected to the slider. When the leaf spring is pressed down, the push rod presses down on the outer side of the leaf spring. A connecting plate is provided between the slider and the cylinder, and a slide rail is provided between the connecting plate and the slider. The connecting plate and the push rod are connected by an elastic element. A first limiting post is provided on the push rod, and a second limiting post is provided on the connecting plate.

[0014] In a preferred embodiment, the lower end of the push rod has a clamping portion, and when the leaf spring is pressed down, the leaf spring is located between the two clamping portions.

[0015] In a preferred embodiment, the pin output module includes a third drive cylinder, a push plate assembly connected to the third cylinder, an ejector pin, and a guide groove. The ejector pin is connected to the push plate assembly and is movable relative to the guide groove.

[0016] In a preferred embodiment, the positioning module includes an X-axis positioning module and a Y-axis positioning module. The X-axis positioning module includes a first fixed block and a first movable block, and the Y-axis positioning module includes a second fixed block and a second movable block. The first movable block and the second movable block can move relative to the housing to clamp or release the housing.

[0017] In a preferred embodiment, the Y-axis positioning module is provided with an air blowing mechanism, the nozzle of which faces the inner side of the leaf spring.

[0018] The present invention also adopts the following technical solution:

[0019] A precision assembly system for a housing and a leaf spring includes a feeding module, a discharging module, and a rotating disk located between the feeding module and the discharging module, wherein the rotating disk is provided with a plurality of the aforementioned precision assembly devices.

[0020] The present invention also adopts the following technical solution:

[0021] A method for precision assembly of a housing and a leaf spring, using the aforementioned precision assembly apparatus, includes the following steps:

[0022] Step 1: First, place the housing into the positioning module, and use the X-axis positioning module and Y-axis positioning module of the positioning module to limit the housing;

[0023] Step 2: The first pushing module pushes the leaf spring, aligning the second end of the leaf spring with the pin output module;

[0024] Step 3: The pin output module outputs a pin to the second end of the leaf spring, and the pin is inserted into the pin hole at the second end;

[0025] Step 4: The first pushing module continues to push the second end of the leaf spring so that it falls into the mounting groove of the housing, and the second pushing module presses down on the leaf spring to press it tightly in the mounting groove.

[0026] The present invention adopts the above solution, which has the following advantages compared with the prior art:

[0027] The precision assembly device for the housing and leaf spring of the present invention first places the housing into the positioning module, then uses the positioning module to limit the housing position. Next, the first pushing module presses down on the leaf spring, aligning the second end of the leaf spring with the pin output module, ensuring that the pin can be smoothly inserted into the second end of the leaf spring. Then, the first pushing module continues to push the leaf spring so that it falls into the mounting groove of the housing. Finally, the second pushing module presses down on the leaf spring to press it tightly in the mounting groove. This device has accurate positioning, relatively stable assembly, and a high degree of automation. Attached Figure Description

[0028] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a perspective view of a precision assembly system of a housing and a leaf spring according to an embodiment of the present invention;

[0030] Figure 2A perspective view of a precision assembly device for a housing and a leaf spring according to an embodiment of the present invention;

[0031] Figure 3 This is a partial schematic diagram of a precision assembly device for a housing and a leaf spring according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of a pin-shaft output module according to an embodiment of the present invention;

[0033] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0034] Figure 6 This is another schematic diagram of a pin-shaft output module according to an embodiment of the present invention;

[0035] Figure 7 for Figure 6 A magnified view of a section at point B in the middle;

[0036] Figure 8 This is a schematic diagram of an X-axis positioning module according to an embodiment of the present invention;

[0037] Figure 9 This is a schematic diagram of a Y-axis positioning module according to an embodiment of the present invention;

[0038] Figure 10 This is a schematic diagram of the first pressing assembly and the housing according to an embodiment of the present invention;

[0039] Figure 11 This is a schematic diagram of the second pushing assembly according to an embodiment of the present invention;

[0040] Figure 12 This is a schematic diagram of the housing and leaf spring according to an embodiment of the present invention;

[0041] Figure 13 This is another schematic diagram of the housing and leaf spring according to an embodiment of the present invention.

[0042] in,

[0043] 100. Housing; 101. Mounting slot; 102. Groove; 200. Pin;

[0044] 300, Leaf spring; 301, Second end; 302, Pin hole; 303, Inner surface; 304, Outer surface;

[0045] 400. Precision assembly system; 401. Loading module; 402. Unloading module; 403. Rotary disk; 404. Precision assembly device; 4041. First station; 4042. Second station; 4043. Third station; 4044. Fourth station; 405. Vision inspection module; 406. Robotic arm; 407. Pin shaft loading module;

[0046] 1. Positioning module; 11. X-axis positioning module; 111. First fixed block; 112. First moving block; 113. Air blowing mechanism; 1131. Nozzle; 114. First drive cylinder; 12. Y-axis positioning module; 121. Second fixed block; 122. Second moving block; 123. Second drive cylinder; 124. Connecting block;

[0047] 2. Pin output module; 21. Ejector pin; 22. Guide groove; 23. Third drive cylinder; 24. Push plate assembly; 241. Rod;

[0048] 3. Pushing module; 31. First pushing module; 311. Electric cylinder; 312. First push plate; 313. Second push plate; 3131. Protrusion; 314. Roller; 32. Second pushing module; 321. Cylinder; 322. Slider; 323. Push rod; 3231. First limiting post; 3232. Clamping part; 324. Connecting plate; 3241. Second limiting post; 325. Slide rail; 326. Elastic element. Detailed Implementation

[0049] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] Reference Figure 1 As shown, this embodiment provides a precision assembly system 400 for a housing and a leaf spring, including a feeding module 401, a discharging module 402, a rotary disk 403 located between the feeding module 401 and the discharging module 402, a vision inspection module 405, and a robot arm 406. The rotary disk 403 is provided with a plurality of precision assembly devices 404.

[0051] Furthermore, referring to Figures 2 to 13 As shown, the precision assembly device 404 for the housing and leaf spring includes a positioning module 1, a pin output module 2, and a pushing module 3. Combined with... Figure 12 and Figure 13 As shown, the first end of the leaf spring 300 has been connected to the first end of the housing 100 in the previous process. In this embodiment, the second end 301 of the leaf spring 300 is assembled into the mounting groove 101 of the second end of the housing 100. Before assembling into the mounting groove 101 of the housing 100, a pin 200 needs to be assembled into the pin hole 302 of the leaf spring 300. In this embodiment, the pin 200 is equivalent to the connecting shaft of the hinge, supporting the rotation of the housing 100.

[0052] Furthermore, the positioning module 1 is used to limit the movement of the housing 100 during assembly, preventing it from shifting and affecting the assembly result. (Refer to...) Figure 8 and Figure 9 As shown, the positioning module 1 includes an X-axis positioning module 11 and a Y-axis positioning module 12. The X-axis positioning module 11 is used to limit the housing 100 in the X-axis direction, and the Y-axis positioning module 12 is used to limit the housing 100 in the Y-axis direction.

[0053] Specifically, the X-axis positioning module 11 includes a first fixed block 111 and a first movable block 112. The position of the first fixed block 111 is fixed, while the first movable block 112 can move in the X-axis direction under the action of the first drive cylinder 114. See details below. Figure 8 As shown, the first drive cylinder 114 drives the end of the first moving block 112 to insert into the groove 102 of the housing 100, thereby restricting the movement of the housing 100. Combined with... Figure 3 and Figure 9 As shown, the Y-axis positioning module 12 includes a second fixed block 121 and a second moving block 122. The position of the second fixed block 121 is fixed. The second moving block 122 and the second driving cylinder 123 are connected by a connecting block 124. The second moving block 122 moves in the Y-axis direction under the drive of the second driving cylinder 123. The second driving cylinder 123 drives the second moving block 122 to move and cooperate with the second fixed block 121 to clamp the housing 100 in the Y-axis direction. Therefore, the first moving block 112 and the second moving block 122 can move relative to the housing 100 to clamp the housing 100. Similarly, when it is necessary to release the housing 100 into the positioning module 1, the first moving block 112 can be controlled to move away from the first fixed block 111, and the second moving block 122 can be controlled to move away from the second fixed block 121, leaving a large gap to place the housing 100 into the entire positioning module 1. Then, the cylinder can be controlled to move the first moving block 112 and the second moving block 122. The first moving block 112, the first fixed block, the second moving block 122 and the second fixed block 121 clamp the housing 100 to fix the position of the housing 100 on the X-axis and Y-axis to facilitate the next step.

[0054] Furthermore, the Y-axis positioning module 12 is provided with an air blowing mechanism 113. The nozzle 1131 of the air blowing mechanism 113 faces the inner side 303 of the leaf spring 300. The nozzle 1131 is connected to the air blowing pipe connector. When the housing 100 is in the limit position, the nozzle 1131 blows air onto the inner side 303 of the leaf spring 300 to ensure that the second end 301 of the leaf spring 300 will not be stuck on the housing 100, so that it is in a free state. Here, the "inner side" refers to the concave surface of the leaf spring 200. Correspondingly, the side opposite to the concave surface is the outer side 304 of the leaf spring 300.

[0055] Pin output module 2 is used to output pin 200 to the second end 301 of leaf spring 300, see reference. Figures 4 to 7 As shown, the pin output module 2 includes a third drive cylinder 23, a push plate assembly 24 connected to the third drive cylinder 23, a ejector pin 21, and a guide groove 22. The ejector pin 21 can move relative to the guide groove 22 in the X-axis direction. The diameter of the ejector pin 21 is 0.5 mm, and the width of the guide groove 22 is 0.55 mm. The shape of the push plate assembly 24 is similar to the shape of a bow. The push plate assembly 24 is composed of multiple push plates, connecting shafts, and other structures, which are common technologies in the prior art and are not the focus of this invention, so they will not be described in detail here. Specifically, the rod 241 of the ejector pin 21 and the push plate assembly 24 is fixedly connected, and the rod 241 pushes the ejector pin 21. In this embodiment, the pin 200 is disposed in the guide groove 22. When the ejector pin 21 is pushed by the rod 241, it pushes the pin 200 to insert it into the pin hole 302 of the leaf spring 300.

[0056] The push module 3 is used to apply pressure to the leaf spring 300, as shown in the reference. Figure 10 and Figure 11 As shown, the pressing module 3 includes a first pressing module 31 and a second pressing module 32. The first pressing module 31 includes an electric cylinder 311, a first push plate 312, and a second push plate 313. The first push plate 312 is vertically arranged, and the second push plate 313 is inclined. The first push plate 312 and the second push plate 313 are connected by a roller 314. The second push plate 313 contacts the second end 301 of the leaf spring 300. Specifically, the second push plate 313 faces the outer side 304 of the leaf spring 300. The second push plate 313 has a protrusion 3131. When the first pressing module 31 pushes the leaf spring 300, the lower surface of the protrusion 3131 contacts the second end 301 of the leaf spring 300, specifically by pressing down the pin hole 302 at the second end 301.

[0057] Furthermore, the first pushing module 31 has a first working state and a second working state. In the first working state, the first pushing module 31 pushes the second end 301 of the leaf spring 300 to align with the pin output module 2. Specifically, it aligns the pin hole 302 of the second end 301 with the guide groove 22 of the pin output module 2, so that the pin 200 in the guide groove 22 can smoothly enter the pin hole 302. In the second working state, the first pushing module 31 pushes the leaf spring 300 into the mounting groove 101 of the housing 100. The first working state and the second working state correspond to different strokes of the second push plate 313. In the second working state, the stroke of the second push plate 313 is greater than the stroke in the first working state.

[0058] Reference Figure 11As shown, the second pressing module 32 is located above the leaf spring 300. The second pressing module 32 presses down on the outer side of the leaf spring 300 to press it tightly into the mounting groove 101. Specifically, the second pressing module 32 includes a cylinder 321, a slider 322 connected to the cylinder 321, and a push rod 323 connected to the slider 322. When pressing down on the leaf spring 300, the push rod 323 presses down on the outer side of the leaf spring 300. Further, a connecting plate 324 is provided between the slider 322 and the cylinder 321, and a slide rail 325 is provided between the connecting plate 324 and the slider 322. The slider 322 and the push rod 323 can move on the slide rail 325. The connecting plate 324 and the push rod 323 are connected by an elastic member 326. The push rod 323 is provided with a first limiting post 3231, and the connecting plate 324 is provided with a second limiting post 3241.

[0059] After the second pushing module 32 is assembled, the push rod 323, under its own weight, will make initial contact with the housing 100. At this time, the elastic element 326 is in an extended state, and the first limiting post 3231 and the second limiting post 3241 abut against each other, limiting the stroke of the push rod 323. Then, the cylinder 321 is activated. Under the action of the cylinder 321, the connecting plate 324 and the push rod 323 move down as a whole. The lower end of the push rod 323 presses down on the leaf spring 300, so that the leaf spring 300 can enter the mounting groove 101 of the housing 100. After the lower end of the push rod 323 and the leaf spring 300 are in tight contact, the elastic element 326 will drive the push rod 323 to move upward. The push rod 323 moves upward along the slide rail 325. Furthermore, the lower end of the push rod 323 has two clamping parts 3232, and the arc surface of the leaf spring 300 is located between the two clamping parts 3232. When the leaf spring 300 is pressed down, the two clamping parts 3232 clamp the arc surface of the leaf spring 300 and press it down, so that the leaf spring 300 can be installed relatively stably in the mounting groove 101.

[0060] Specifically, in this embodiment, the rotary disk 403 is provided with four precision assembly devices 404, which are arranged in a ring around the rotary disk 403. More specifically, the four precision assembly devices 404 are respectively located at the first station 4041, the second station 4042, the third station 4043, and the fourth station 4044. The precision assembly devices at the first station 4041, the second station 4042, and the third station 4043 do not have a second pressing module, while the precision assembly device at the fourth station 4044 has a second pressing module.

[0061] In this embodiment, the precision assembly system for the housing and leaf spring operates as follows: the conveyor belt of the loading module 401 transports the housing 100 to the robot arm 406, which picks up the housing 100 and loads it at the first station 4041. At the first station 4041, the precision assembly device uses the positioning module 1 to position the housing. Then, the positioned housing is transported to the second station by the action of the rotary table. The pin loading module 407 transports the pin 200, which is picked up by the robot arm and transported to the guide groove 22. At this position, the pin is installed into the leaf spring. The leaf spring with the pin installed is then transported to the third station. The second pushing module of the precision assembly device at the third station moves downward to press the leaf spring into the housing. Finally, the housing is unloaded by the unloading module 402. Before unloading, the visual inspection module 405 can detect whether the housing is properly assembled to distinguish between good and bad products. When the previous shell is finished being loaded at the first station 4041 and rotated to the second station 4042, the next shell is loaded to the first station 4041. In this embodiment, multiple precision assembly devices are set on the rotary table 403, which can improve the efficiency of assembly work.

[0062] This embodiment also provides a precision assembly method for a housing and a leaf spring, using the aforementioned precision assembly device, including the following steps: Step 1: First, place the housing 100 into the positioning module 1, and use the X-axis positioning module 11 and Y-axis positioning module 12 of the positioning module 1 to limit the housing 100; Step 2: The first pushing module 31 pushes the leaf spring 300, aligning the second end 301 of the leaf spring 300 with the pin output module 2; Step 3: The pin output module 2 outputs the pin 200 to the second end 301 of the leaf spring 300, and the pin 200 is inserted into the pin hole 302 of the second end 301; Step 4: The first pushing module 31 continues to push the second end 301 of the leaf spring 300 so that it falls into the mounting groove 101 of the housing 100, and the second pushing module 32 presses down on the leaf spring 300 to press it tightly in the mounting groove 101.

[0063] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, and these steps and elements do not constitute an exclusive list, as the method or apparatus may also include other steps or elements. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0064] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. Furthermore, the descriptions of "up," "down," "left," and "right" used in this invention are only relative to the relative positional relationships of the various components of the invention in the accompanying drawings.

[0065] The above embodiments are merely illustrative of the technical concept and features of the present invention, and are preferred embodiments. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and they should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made according to the principles of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A precision assembly device for a housing and a leaf spring, characterized in that, include: A positioning module is used to limit the housing. The positioning module includes an X-axis positioning module and a Y-axis positioning module. The X-axis positioning module includes a first fixed block and a first movable block. The Y-axis positioning module includes a second fixed block and a second movable block. The first movable block and the second movable block can move relative to the housing to clamp or release the housing. A pin output module is used to output a pin to the second end of the leaf spring. The pin output module includes a third drive cylinder, a push plate assembly connected to the third drive cylinder, an ejector pin, and a guide groove. The ejector pin is connected to the push plate assembly and can move relative to the guide groove. A pressing module is used to apply pressure to the leaf spring. The pressing module includes a first pressing module and a second pressing module. The first pressing module faces the outer side of the leaf spring and has a first working state and a second working state. In the first working state, the first pressing module pushes the second end of the leaf spring to align with the pin output module. In the second working state, the first pressing module pushes the leaf spring into the mounting groove of the housing. The second pressing module is located above the leaf spring and presses down on the outer side of the leaf spring to press it firmly into the mounting groove. The first pressing module includes an electric cylinder, a first push plate, and a second push plate. The second push plate is inclined... The first and second push plates are connected by a roller, and the second push plate contacts the second end of the leaf spring. The second push plate has a protrusion, and in the first and second working states, the lower surface of the protrusion abuts against the second end of the leaf spring. The second pushing module includes a cylinder, a slider connected to the cylinder, and a push rod connected to the slider. When the leaf spring is pressed down, the push rod presses down on the outer side of the leaf spring. A connecting plate is provided between the slider and the cylinder, and a slide rail is provided between the connecting plate and the slider. The connecting plate and the push rod are connected by an elastic element. The push rod is provided with a first limiting post, and the connecting plate is provided with a second limiting post.

2. The precision assembly apparatus according to claim 1, characterized in that, The lower end of the push rod has a clamping part, and when the leaf spring is pressed down, the leaf spring is located between the two clamping parts.

3. The precision assembly apparatus according to claim 1, characterized in that, The Y-axis positioning module is equipped with an air blowing mechanism, and the nozzle of the air blowing mechanism faces the inner side of the leaf spring.

4. A precision assembly system for a housing and a leaf spring, characterized in that, It includes a feeding module, a discharging module, and a rotating disk located between the feeding module and the discharging module, wherein the rotating disk is provided with a plurality of precision assembly devices as described in any one of claims 1 to 3.

5. A method for precision assembly of a housing and a leaf spring, employing the precision assembly apparatus as described in any one of claims 1 to 3, characterized in that, Includes the following steps: Step 1: First, place the housing into the positioning module, and use the X-axis positioning module and Y-axis positioning module of the positioning module to limit the housing; Step 2: The first pushing module pushes the leaf spring, aligning the second end of the leaf spring with the pin output module; Step 3: The pin output module outputs a pin to the second end of the leaf spring, and the pin is inserted into the pin hole at the second end; Step 4: The first pushing module continues to push the second end of the leaf spring so that it falls into the mounting groove of the housing, and the second pushing module presses down on the leaf spring to press it tightly in the mounting groove.

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