A pressing mechanism for assembling parts

Abstract

The utility model relates to mechanical manufacturing technical field discloses a kind of pressing mechanism for parts assembly, the mechanism includes placing plate, installation box, support plate, cylinder, sliding plate, inclined block, support rod, transmission rod and arc-shaped pressing block.Cylinder drives sliding plate and inclined block horizontal movement, the inclined plane of inclined block extrusion has the support rod of cooperation inclined plane, converts into the force that makes support rod in support plate stable upward movement with horizontal thrust, support rod is driven arc-shaped pressing block radial expansion by transmission rod, realizes support fixed from part inner wall.By setting inner support mechanism, with external pressure cooperation forms the bidirectional fixed mode of "inner support outer pressure", effectively avoid the deformation or deviation of part in pressing process, significantly improve assembly accuracy.Meanwhile, integrated stripping mechanism simplifies production process, improves the continuous operation efficiency of assembly line, and can avoid damage to part when stripping, with very high practical value.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology and discloses a clamping mechanism for assembling parts. Background Technology

[0002] In the field of machining and assembly, fixtures are typically used to securely position workpieces in order to ensure assembly accuracy. For press-fitting of hollow or ring-shaped parts, such as pressing a bearing into a housing bore, stable clamping of the part is particularly crucial.

[0003] Existing fixtures mostly use external clamping or limiting methods for parts. However, when applying external pressing force to ring-shaped parts with thin walls or high precision requirements, the external clamping force alone is insufficient to effectively counteract the radial component of the pressing force generated on the inner wall of the part. This can cause elastic deformation or even plastic deformation of the part during the stress process, such as the orifice becoming elliptical, or the part as a whole undergoing a slight displacement, which seriously affects the final assembly accuracy and product quality.

[0004] Therefore, this utility model proposes a clamping mechanism for parts assembly to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problem that existing clamping mechanisms for parts assembly, when pressing hollow or ring-shaped parts, are prone to uneven stress and deformation due to the lack of effective internal support, thus affecting assembly accuracy, this utility model aims to provide a clamping mechanism for parts assembly with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a pressing mechanism for assembling parts, including: a pressing machine body, a placement plate, an internal support mechanism, a mounting box, a support plate, a cylinder, a sliding plate, an inclined block, a support rod, a transmission rod, a handle; and an arc-shaped pressing block.

[0007] The support rod has a bottom inclined surface that matches the inclined surface of the inclined block.

[0008] Furthermore, the cylinder is connected to the sliding plate, the inclined block is fixed to the sliding plate, the support rod is slidably fitted to the support plate, and the transmission rod is connected between the support rod and the arc-shaped pressing block. When the cylinder drives the sliding plate and the inclined block to move horizontally, the inclined surface of the inclined block slides and presses against the bottom inclined surface of the support rod, thereby driving the support rod to move upward within the support plate, and then driving the arc-shaped pressing block to expand radially outward through the transmission rod.

[0009] Preferably, the clamping mechanism for assembling the part further includes a reset assembly, which includes a spring and a fixing plate, the spring being disposed between the fixing plate and the support rod.

[0010] Preferably, the top of the placement plate is provided with a positioning post for preliminary positioning of the parts.

[0011] Preferably, the clamping mechanism for assembling the part further includes a demolding mechanism, which includes a pressing rod, an L-shaped plate, and an ejector plate.

[0012] Preferably, the pressing rod is connected to the L-shaped plate via a connecting plate, and the L-shaped plate is pivotally connected to the top plate.

[0013] Preferably, the demolding mechanism further includes a second spring connected to the ejector plate, which is used to drive the ejector plate to reset.

[0014] Preferably, the demolding mechanism further includes a guide rod, along which the ejector plate slides.

[0015] This utility model has the following beneficial effects: 1. This utility model, by setting an internal support mechanism, uses a cylinder to drive an inclined block to convert the horizontal thrust into the radial support force of the arc-shaped clamping block, which solves the problem that in the prior art, when hollow or ring-shaped parts are only clamped from the outside, the parts are prone to deformation or displacement due to uneven force. It achieves the technical effect of forming a "internal support and external pressure" two-way fixing mode and significantly improving the assembly accuracy.

[0016] 2. This utility model solves the problems of cumbersome process, low efficiency and easy damage to parts caused by the separation of pressing and demolding processes in the prior art by integrating a demolding mechanism composed of pressing rod, L-shaped plate and ejector plate. It achieves the technical effect of simplifying the production process, improving the continuous operation efficiency of the assembly line and ensuring the appearance and structural integrity of the assembled parts.

[0017] 3. This utility model solves the problem that the existing fixtures are usually special parts and difficult to adapt to different specifications of parts, resulting in poor versatility, by using the radial telescopic design of the arc-shaped clamping block in the inner support mechanism. It achieves the technical effect of flexibly adjusting the support range to adapt to parts with different inner diameters, enhancing the versatility of the mechanism and reducing the frequency of changing special fixtures. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a clamping mechanism for assembling parts according to the present invention; Figure 2 This is a schematic diagram of the placement plate of a clamping mechanism for parts assembly proposed in this utility model; Figure 3This is a schematic diagram of the mounting box for a clamping mechanism for assembling parts according to the present invention; Figure 4 This is a schematic diagram of the pressing rod of a clamping mechanism for assembling parts according to the present invention.

[0019] Legend: 1. Press machine body; 2. Placement plate; 3. Internal support mechanism; 31. Mounting box; 32. Cylinder; 33. Sliding plate; 34. Inclined block; 35. Support plate; 36. Support rod; 37. Transmission rod; 38. Arc-shaped clamping block; 39. Reset assembly; 391. Spring 1; 392. Fixing plate; 4. Positioning column; 5. Demolding mechanism; 51. Pressing rod; 52. Connecting plate; 53. L-shaped plate; 54. Ejection plate; 55. Guide rod; 56. Spring 2; 6. Handle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0021] Please refer to Figures 1 to 4 This utility model provides a pressing mechanism for assembling parts, which aims to solve the problems in the prior art where the lack of internal support easily leads to deformation of hollow or ring-shaped parts during pressing, and the separation of pressing and demolding processes affects efficiency.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the clamping mechanism for assembling the part includes a press machine body 1, which provides a sliding track for the placement plate 2 to prevent displacement during press-fitting, the placement plate 2, and a mounting box 31 in the internal support mechanism 3 inside the placement plate 2. The top of the placement plate 2 is provided with a positioning post 4 for preliminary positioning of the part. A handle 6 is fixedly connected to the front end of the placement plate 2. A support plate 35 and a cylinder 32 are provided inside the mounting box 31. A sliding plate 33 is also slidably arranged inside the mounting box 31. The sliding plate 33 is drivenly connected to the output end of the cylinder 32. An inclined block 34 is fixed to the sliding plate 33. A support rod 36 is slidably engaged with the support plate 35. A transmission rod 37 is connected to the support rod 36. An arc-shaped clamping block 38 is connected to the transmission rod 37.

[0023] Please refer to the following carefully. Figure 1 and Figure 3The core of this utility model's technical solution lies in the fact that the support rod 36 has a bottom inclined surface that cooperates with the inclined surface of the inclined block 34. The support rod 36 achieves stable up-and-down sliding within the support plate 35. The inclined block 34 is fixedly connected to the sliding plate 33, which is driven by the cylinder 32 to move horizontally in a linear fashion. During operation, the output thrust of the cylinder 32 drives the sliding plate 33 and the inclined block 34 to move. The inclined surface of the inclined block 34 presses against the bottom inclined surface of the support rod 36. This inclined surface wedging transmission structure accurately converts the horizontal movement of the inclined block 34 into the vertical upward movement of the support rod 36. The upward movement of the support rod 36 is transmitted to the arc-shaped clamping block 38 through the transmission rod 37, thereby driving the arc-shaped clamping block 38 to expand radially outward, thereby supporting and clamping the inner wall of the workpiece. The mechanism also includes a reset assembly 39, which includes a spring 391 and a fixing plate 392. The spring 391 is disposed between the fixing plate 392 and the support rod 36. When the support rod 36 moves upward, the spring 391 is compressed and stores energy. When the cylinder 32 operates in the opposite direction and drives the inclined block 34 to retract, the spring 391 releases the stored energy to push the support rod 36 to slide downward and reset.

[0024] Based on the above embodiments, the clamping mechanism for assembling parts also includes a demolding mechanism 5, such as... Figure 4 As shown, the demolding mechanism 5 includes a pressing rod 51, a connecting plate 52, an L-shaped plate 53, an ejector plate 54, a guide rod 55, and a second spring 56. The pressing rod 51 is connected to the L-shaped plate 53 via the connecting plate 52. The L-shaped plate 53 is pivotally connected to the ejector plate 54. The ejector plate 54 slides along the guide rod 55. The second spring 56 is connected to the ejector plate 54, and... Figure 2 As shown, the top of the placement plate 2 is also provided with a positioning post 4.

[0025] The working principle is as follows: When it is necessary to fix the workpiece, the workpiece is first placed on the positioning post 4 on the top of the placement plate 2 for initial positioning. Then, the cylinder 32 installed in the mounting box 31 is activated. The cylinder 32 outputs axial thrust to push the sliding plate 33 and the inclined block 34 fixed at its end to move linearly in the horizontal direction. As the inclined block 34 moves, its inclined outer wall presses against the bottom inclined surface of the support rod 36, converting the horizontal thrust into a force that makes the support rod 36 slide stably upward inside the support plate 35. During this upward movement, the spring 391 in the reset assembly 39 is simultaneously compressed to compress and store energy. When the support rod 36 moves upward, it drives the arc-shaped clamping block 38 to expand radially outward through the transmission rod 37 and tightly fit against the inner wall of the workpiece to achieve stable internal support and fixation. After processing is completed, the cylinder 32 reverses its operation to drive the sliding plate 33 and the inclined block 34 to retract. The inclined block 34 separates from the bottom inclined surface of the support rod 36. Under the guidance of the fixed plate 392, the spring 391 releases its stored energy, pushing the support rod 36 to slide down and reset along the support plate 35. The transmission rod 37 and the arc-shaped clamping block 38 are then released. When demolding is required, the operator presses the pressing rod 51 in the demolding mechanism 5. The pressing rod 51 transmits the pressing force to the L-shaped plate 53 through the connecting plate 52, causing it to rotate. The rotational power of the L-shaped plate 53 is converted into the linear motion of the ejector plate 54, causing the ejector plate 54 to move smoothly upward along the inner wall of the guide rod 55 and push the workpiece to demold. During the upward movement of the ejector plate 54, the spring 56 at its bottom is stretched synchronously and stores elastic potential energy. After demolding is completed, the operator releases the pressing rod 51. The stretched spring 56 releases its elastic potential energy, causing the ejector plate 54 to fall back and reset along the guide rod 55.

Claims

1. A clamping mechanism for assembling parts, comprising: Press machine body (1), placement plate (2), internal support mechanism (3); The mounting box (31) is located inside the placement plate (2); A support plate (35) is disposed inside the mounting box (31); Cylinder (32) is installed in the mounting box (31); The sliding plate (33) is slidably disposed in the mounting box (31) and is connected to the output end of the cylinder (32) in a transmission manner; The inclined block (34) is fixed to the sliding plate (33); The support rod (36) is slidably fitted to the support plate (35); The transmission rod (37) is connected to the support rod (36). An arc-shaped clamping block (38) is connected to the transmission rod (37). Its features are, The support rod (36) has a bottom inclined surface that matches the inclined surface of the inclined block (34); When the cylinder (32) drives the sliding plate (33) and the inclined block (34) to move horizontally, the inclined surface of the inclined block (34) presses against the bottom inclined surface of the support rod (36) to convert the horizontal thrust into a force that causes the support rod (36) to move upward within the support plate (35), and then drives the arc-shaped pressing block (38) to expand radially outward through the transmission rod (37) to support the inner wall of the part.

2. The clamping mechanism for assembling parts according to claim 1, characterized in that, It also includes a reset assembly (39), which includes a spring (391) that abuts against the support rod (36). The spring (391) is compressed and stores energy when the support rod (36) moves upward, and releases energy when the wedge (34) retracts to push the support rod (36) to reset.

3. The clamping mechanism for assembling parts according to claim 2, characterized in that, The reset assembly (39) also includes a fixing plate (392), and the spring (391) is disposed between the fixing plate (392) and the support rod (36).

4. The clamping mechanism for assembling parts according to claim 1, characterized in that, The top of the placement plate (2) is provided with a positioning post (4) for preliminary positioning of the parts, and a handle (6) is fixedly connected to the front end of the placement plate (2).

5. The clamping mechanism for assembling parts according to claim 1, characterized in that, It also includes a demolding mechanism (5), which includes a pressing rod (51), an L-shaped plate (53), and an ejector plate (54).

6. The clamping mechanism for assembling parts according to claim 5, characterized in that, The pressing rod (51) is connected to the L-shaped plate (53) via the connecting plate (52). The L-shaped plate (53) is pivotally connected to the ejector plate (54). When the pressing rod (51) is pressed, the L-shaped plate (53) rotates to drive the ejector plate (54) to move upward to achieve demolding.

7. The clamping mechanism for assembling parts according to claim 6, characterized in that, The demolding mechanism (5) also includes a second spring (56), which is connected to the ejector plate (54) and is used to drive the ejector plate (54) to fall back and reset when the pressing rod (51) is released.

8. The clamping mechanism for assembling parts according to claim 7, characterized in that, The demolding mechanism (5) further includes a guide rod (55), along which the ejector plate (54) moves.

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