A positioning device for subframe bushing press fitting

Abstract

The utility model relates to bushing press -mounting technical field discloses a positioning device for sub -frame bushing press -mounting, include: workstation and adjustable position positioning structure. The utility model has the following advantages and effect: adjustable position positioning structure can change position according to the appearance and size of the frame, so that a plurality of sets of limit rods can be fitted on the outer wall of the frame at a plurality of points according to the modeling of the frame, the plurality of sets of limit rods can be quickly fixed through the extrusion fixing structure, the frame can be positioned without the previous clamping extrusion mode, the frame is prevented from being excessively extruded to cause the wear and scratch of the paint surface, through the limiting mode, the same specification frame can be quickly positioned, the non - destructive frame positioning is realized, and the phenomenon of subsequent paint repair is avoided.

Description

Technical Field

[0001] This utility model relates to the field of bushing pressing technology, and in particular to a positioning device for pressing bushings on a subframe. Background Technology

[0002] Positioning devices used for press-fitting subframe bushings are key equipment in the automobile manufacturing process, primarily used to ensure the precise positioning and press-fitting quality of the bushings on the subframe. These devices achieve automated and high-precision press-fitting of the bushings through the coordination of various positioning and pressing mechanisms.

[0003] According to Chinese Announcement No. CN218487681U, a workpiece positioning and clamping device for a press fitting machine includes a base, a support column at the upper end of the base, a mounting box fixedly mounted at the upper end of the support column, a hydraulic cylinder and an alarm fixedly mounted at the upper end of the mounting box, a piston rod on the hydraulic cylinder, a pressure plate fixedly connected to the movable end of the piston rod, an operating table at the center of the upper surface of the base, an installation groove on the upper surface of the operating table, lead screws on the left and right inner walls of the installation groove, a motor connected to one end of each lead screw, clamping plates on the surfaces of each lead screw, clamping seats on each clamping plate, and screws on each clamping seat.

[0004] Traditionally, the frame is positioned and fixed by clamping. However, this method can easily damage the paint of the frame during the positioning and fixing process, resulting in the need for subsequent repainting. Utility Model Content

[0005] The purpose of this invention is to provide a positioning device for pressing subframe bushings, which can solve the problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a positioning device for press-fitting subframe bushings, comprising: a worktable and an adjustable position positioning structure, wherein the worktable has an internal cavity, the adjustable position positioning structure is disposed inside the cavity of the worktable, the adjustable position positioning structure includes strip holes disposed on the upper surface of the worktable, the number of the strip holes being several sets, a guide rod is welded inside the cavity of the worktable, a fixed slider is slidably disposed on the guide rod, and a limit rod is welded to the top of the fixed slider.

[0007] Preferably, the number of guide rods is several groups, and each group of guide rods is located directly below each group of strip holes.

[0008] Preferably, the limiting rod is slidably disposed inside the strip-shaped hole.

[0009] Preferably, the adjustable positioning structure further includes a lifting spring sleeved on the guide rod, with the two ends of the lifting spring respectively attached to the inner wall of the cavity of the worktable and the outer wall of the fixed slider.

[0010] Preferably, it further includes: a compression fixing structure, which is disposed on the outer wall of the worktable and includes mounting bases welded to both sides of the outer wall of the worktable.

[0011] Preferably, the extrusion fixing structure further includes a positioning rod vertically welded to the outer wall of the mounting base, and a positioning plate is slidably disposed on the positioning rod.

[0012] Preferably, the positioning plate is disposed inside the cavity of the workbench, the outer wall of the positioning plate is provided with an anti-slip frosted surface, and the positioning plate is disposed directly below the fixed slider.

[0013] Preferably, the extrusion fixing structure further includes an electric push rod disposed on the outer wall of the back of the worktable, and a first trapezoidal block is disposed on the output end of the electric push rod.

[0014] Preferably, the extrusion fixing structure further includes a second trapezoidal block disposed on the outer wall of the bottom end of the positioning plate.

[0015] Preferably, both the second trapezoidal block and the first trapezoidal block have inclined surfaces on their outer walls, and the inclined surfaces of the first trapezoidal block and the second trapezoidal block fit together.

[0016] The beneficial effects of this utility model are as follows: By setting an adjustable position positioning structure and a compression fixing structure, the adjustable position positioning structure can change its position according to the shape and size of the frame, so that multiple sets of limiting rods can fit on multiple points on the outer wall of the frame according to the shape of the frame. The compression fixing structure can quickly fix multiple sets of limiting rods. This method can position the frame without the previous clamping and compression method, avoiding excessive compression of the frame and causing wear and scratches on the paint surface. Through the limiting method, frames of the same specifications can be quickly positioned, achieving non-destructive frame positioning and avoiding the phenomenon of subsequent paint touch-up. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a frontal top view of the three-dimensional structure of this utility model;

[0019] Figure 2 This is a frontal, bottom-view, three-dimensional structural diagram of the present invention;

[0020] Figure 3 This is a three-dimensional cross-sectional structural diagram of the adjustable positioning structure of this utility model.

[0021] In the picture,

[0022] 1. Workbench;

[0023] 2. Adjustable positioning structure; 201. Strip hole; 202. Guide rod; 203. Fixed slider; 204. Limiting rod; 205. Lifting spring;

[0024] 3. Extrusion fixing structure; 301. Mounting fixing seat; 302. Positioning rod; 303. Positioning plate; 304. Electric push rod; 305. First trapezoidal block; 306. Second trapezoidal block. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. 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.

[0026] Example 1:

[0027] Reference Figures 1-3 A positioning device for press-fitting subframe bushings includes: a worktable 1 and an adjustable position positioning structure 2;

[0028] The worktable 1 has an internal cavity, and an adjustable positioning structure 2 is installed inside the cavity of the worktable 1. The adjustable positioning structure 2 includes a strip hole 201 on the upper surface of the worktable 1. There are several sets of strip holes 201. A guide rod 202 is welded inside the cavity of the worktable 1. A fixed slider 203 is slidably mounted on the guide rod 202. A limit rod 204 is welded to the top of the fixed slider 203. There are several sets of guide rods 202. Each set of guide rods 202 is located directly below each set of strip holes 201. The limit rod 204 is slidably mounted inside the strip hole 201. A lifting spring 205 is sleeved on the guide rod 202. The two ends of the lifting spring 205 are respectively attached to the inner wall of the cavity of the worktable 1 and the outer wall of the fixed slider 203.

[0029] One set of frames is placed on the workbench 1. At this time, the position of the adjustable positioning structure 2 is used to make multiple adjustable positioning structures 2 fit against multiple points on the outer wall of the frame for limiting. This allows multiple adjustable positioning structures 2 to position multiple points of the frame, so that when a frame of the same size is placed in the multiple adjustable positioning structures 2 again, it can be quickly positioned.

[0030] When the limiting rod 204 inside the strip hole 201 is moved, the limiting rod 204 can connect with the fixed slider 203 during the displacement process, so that the fixed slider 203 can slide stably on the guide rod 202. When the limiting rod 204 is on the outer wall of the frame, the fixed slider 203 is lifted by the lifting spring 205. At this time, the limiting rod 204 will synchronously adhere to the outer wall of the frame surface above the worktable 1.

[0031] Example 2:

[0032] Reference Figures 1-3 A positioning device for press-fitting subframe bushings, comprising: a pressing and fixing structure 3;

[0033] The extrusion fixing structure 3 is set on the outer wall of the workbench 1. The extrusion fixing structure 3 includes mounting bases 301 welded to both sides of the outer wall of the workbench 1, positioning rods 302 vertically welded to the outer wall of the mounting bases 301, positioning plates 303 slidably mounted on the positioning rods 302, positioning plates 303 are set inside the cavity of the workbench 1, and the outer wall of the positioning plates 303 is provided with an anti-slip frosted surface. The positioning plates 303 are set directly below the fixed slider 203. An electric push rod 304 is set on the outer wall of the back of the workbench 1. A first trapezoidal block 305 is set on the output end of the electric push rod 304, and a second trapezoidal block 306 is set on the outer wall of the bottom end of the positioning plate 303. Both the outer walls of the second trapezoidal block 306 and the first trapezoidal block 305 are provided with inclined surfaces, and the inclined surfaces of the first trapezoidal block 305 and the second trapezoidal block 306 are in contact with each other.

[0034] When the limiting rod 204 is attached to the outer wall of the frame surface above the worktable 1, the electric push rod 304 is activated to drive the first trapezoidal block 305 on the output end to move horizontally. Because the inclined surfaces of the first trapezoidal block 305 and the second trapezoidal block 306 are attached, the horizontally moving first trapezoidal block 305 drives the second trapezoidal block 306 to move vertically. Because the second trapezoidal block 306 is connected to the positioning plate 303, it provides a stable vertical displacement of the positioning plate 303 on the positioning rod 302 of the mounting base 301. When the positioning plate 303 is pressed against the bottom outer wall of the fixed slider 203, the positioning plate 303 will press to fix the fixed slider 203, ensuring that the limiting rod 204 in the strip hole 201 no longer moves.

[0035] Working principle:

[0036] Step 1, Position Adjustment Stage:

[0037] There are multiple sets of limiting rods 204 and strip holes 201. When the subframe is placed in the middle of multiple sets of limiting rods 204, the limiting rods 204 can move horizontally inside the strip holes 201. This allows the multiple sets of limiting rods 204 to fit against multiple points on the outer wall of the irregularly shaped subframe. During placement, personnel can refer to the positioning points formed by multiple limiting rods 204 to quickly place the subframe in the designated area. To improve the stability of the limiting rods 204 during sliding displacement, the guide rod 202 is welded to the inner wall of the worktable 1 to provide its own fixed position. The bottom end of the limiting rod 204 is connected to the fixed slider 203, so that the fixed slider 203 can provide effective stability for the limiting rods 204 inside the strip holes 201 during displacement on the guide rod 202.

[0038] Step 2, Extrusion and Bonding Stage:

[0039] In order to prevent gaps from forming between the limiting rod 204 and the outer wall of the subframe during the displacement process, which would cause the subframe to wobble when placed among multiple limiting rods 204, the elastic force of the lifting spring 205 is used. Since one end of the lifting spring 205 is welded to the outer wall of the worktable 1, the elastic force of the lifting spring 205 can squeeze and push the fixed slider 203 connected to the limiting rod 204 to move, thereby enabling the multiple limiting rods 204 to be in contact with the outer wall of the subframe under the influence of the elastic force.

[0040] Step 3, Fixing Phase:

[0041] When the electric push rod 304 is working, it can drive the first trapezoidal block 305 at the output end to produce horizontal displacement. Because the second trapezoidal block 306 is connected to the positioning plate 303, when the inclined surface of the first trapezoidal block 305 contacts the inclined surface of the second trapezoidal block 306, the second trapezoidal block 306 will be affected by the horizontal displacement of the first trapezoidal block 305 and achieve vertical displacement itself. During the synchronous displacement process, the positioning plate 303 connected to the second trapezoidal block 306 can achieve stable vertical sliding displacement on the positioning rod 302 of the mounting base 301. When the positioning plate 303 is vertically displaced and squeezes against the bottom end of the fixed slider 203, it can ensure that the fixed slider 203 does not have positional deviation after moving to the designated position. This realizes the fixation of the position of multiple sets of limit rods 204 after they are attached to the outer wall of the subframe, ensuring that each batch of subframes can be quickly fixed after being placed inside multiple sets of limit rods 204.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for pressing subframe bushings, characterized in that, include: The workbench (1) has a cavity inside; An adjustable position positioning structure (2) is provided inside the cavity of the workbench (1). The adjustable position positioning structure (2) includes a strip hole (201) provided on the upper surface of the workbench (1). The number of the strip holes (201) is several sets. A guide rod (202) is welded inside the cavity of the workbench (1). A fixed slider (203) is slidably provided on the guide rod (202). A limit rod (204) is welded to the top of the fixed slider (203).

2. The positioning device for pressing subframe bushings according to claim 1, characterized in that: The number of guide rods (202) is several groups, and each group of guide rods (202) is located directly below each group of strip holes (201).

3. The positioning device for pressing subframe bushings according to claim 1, characterized in that: The limiting rod (204) is slidably disposed inside the strip hole (201).

4. The positioning device for pressing subframe bushings according to claim 1, characterized in that: The adjustable positioning structure (2) also includes a lifting spring (205) sleeved on the guide rod (202), with the two ends of the lifting spring (205) respectively attached to the inner wall of the cavity of the worktable (1) and the outer wall of the fixed slider (203).

5. A positioning device for pressing subframe bushings according to claim 1, characterized in that: Also includes: The extrusion fixing structure (3) is provided on the outer wall of the workbench (1); The extrusion fixing structure (3) includes mounting bases (301) welded to both sides of the outer wall of the workbench (1).

6. A positioning device for pressing subframe bushings according to claim 5, characterized in that: The extrusion fixing structure (3) also includes a positioning rod (302) vertically welded to the outer wall of the mounting base (301), and a positioning plate (303) is slidably disposed on the positioning rod (302).

7. A positioning device for pressing subframe bushings according to claim 6, characterized in that: The positioning plate (303) is located inside the cavity of the workbench (1), and the outer wall of the positioning plate (303) is provided with an anti-slip frosted surface. The positioning plate (303) is located directly below the fixed slider (203).

8. A positioning device for pressing subframe bushings according to claim 7, characterized in that: The extrusion fixing structure (3) also includes an electric push rod (304) disposed on the outer wall of the back of the workbench (1), and a first trapezoidal block (305) is disposed on the output end of the electric push rod (304).

9. A positioning device for pressing subframe bushings according to claim 8, characterized in that: The extrusion fixing structure (3) also includes a second trapezoidal block (306) disposed on the outer wall of the bottom end of the positioning plate (303).

10. A positioning device for pressing subframe bushings according to claim 9, characterized in that: The second trapezoidal block (306) and the first trapezoidal block (305) are both provided with inclined surfaces on their outer walls, and the inclined surfaces of the first trapezoidal block (305) and the second trapezoidal block (306) are in contact with each other.

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