Bushing press fitting tool

Abstract

The utility model relates to the technical field of automobile part production. In order to reduce the press-fitting cost of the bushing and improve the press-fitting efficiency, the utility model provides the bushing press-fitting tool, a containing groove for containing a workpiece is formed in a base, a positioning hole is formed in the position, corresponding to the press-fitting position of the bushing, in the containing groove, and a positioning movable shaft is inserted in the positioning hole; a position sensor for detecting the position of the lower end of the positioning movable shaft is arranged below the base; the press-fitting piece is located above the base, and a press-fitting sleeve is arranged on the press-fitting piece; in the press-fitting process, the press-fitting sleeve is arranged on the positioning movable shaft in a sleeving mode and presses the top end of the positioning movable shaft, the free end of the press-fitting sleeve is arranged on the to-be-press-fitted lining in a pressed mode, the press-fitting sleeve synchronously presses the positioning movable shaft downwards when pressing the to-be-press-fitted lining downwards, and when the position sensor detects that the lower end of the positioning movable shaft reaches a preset position, the press-fitting sleeve is driven to press the to-be-press-fitted lining downwards. And the to-be-pressed bushing is pressed in place. When the bushing press-fitting tool is used for press-fitting the bushing, the press-fitting efficiency is high, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts production, in particular to a press-fitting tool for press-fitting a C-shaped metal bushing and a plastic part together. Background Art

[0002] In the production of automotive plastic parts, thermal management module parts that use plastic instead of steel are often used, such as Figure 1 The water pump body 01 made of PPS material shown in the figure needs to be installed with four open bushings 02 (C-type bushings), and after the press-fitting is completed, the bushings 02 need to meet the following requirements:

[0003] 1. The height of the bushing cannot be higher than the reference plane of the pump body;

[0004] 2. The bushing cannot leak pressure.

[0005] In order to avoid pressure leakage of the bushing, a metal sensor is usually installed on the pressing tool to detect whether there is a bushing. Pressing is performed only after the bushing is detected. After the press-fitting is completed, the bushing is manually visually inspected to confirm whether the height of the bushing after press-fitting is higher than the reference plane of the pump body, and marked with colored pens based on the results of the visual inspection.

[0006] The following problems exist when the bushing is pressed in the above manner:

[0007] 1. Before press-fitting, a metal sensor is used to detect whether the bushing is placed in the press-fitting position. Since the market price of each metal sensor is as high as 3,000 yuan, the press-fitting cost is high;

[0008] 2. After the pressing is completed, manual visual inspection is used for full inspection. The inspectors are prone to fatigue, the inspection efficiency is low and it is easy to miss inspections, which leads to the outflow of defective products. Utility Model Content

[0009] In order to reduce the pressing cost of the bushing and improve the pressing efficiency, the utility model proposes a bushing pressing tool, which includes a base and a pressing part, the base is provided with a receiving groove for accommodating a workpiece, and a positioning hole is provided in the receiving groove at a position corresponding to the bushing pressing position, and a positioning movable shaft is inserted in the positioning hole; a position sensor is provided below the base, and the position sensor is used to detect the position of the lower end of the positioning movable shaft; the pressing part is located above the base, and a pressing sleeve is provided on the pressing part; during the pressing process, the pressing sleeve is sleeved on the positioning movable shaft and presses the top end of the positioning movable shaft, and the free end of the pressing sleeve is pressed on the bushing to be pressed, and the pressing sleeve presses down the positioning movable shaft synchronously when pressing the bushing to be pressed downward, and when the position sensor detects that the lower end of the positioning movable shaft reaches a predetermined position, the bushing to be pressed into place.

[0010] When the bushing press-fitting tool of the utility model is used to press-fit the bushing into the matching workpiece, after the bushing is placed in the press-fitting position, the press-fitting sleeve on the press-fitting part can be used to press-fit the bushing downward, and at the same time, the position sensor set under the base is used to detect the lower end position of the positioning movable shaft. The press-fitting sleeve drives the positioning movable shaft to move downward synchronously during the press-fitting process, and when the bushing is press-fitted into place, the lower end of the positioning movable shaft reaches the predetermined position. It can be seen that when the bushing is press-fitted using the bushing press-fitting tool of the utility model, the position sensor can be used to detect whether the lower end of the positioning movable shaft reaches the predetermined position during the press-fitting process to determine whether the bushing is missed and whether it is press-fitted into place, without the need for manual detection, which can effectively improve the press-fitting efficiency of the bushing and reduce the press-fitting cost of the bushing.

[0011] Preferably, a positioning boss is provided in the positioning hole, and a clamping protrusion that docks with the positioning boss is provided on the side wall of the positioning movable shaft. In this way, when in use, the positioning boss and the clamping protrusion on the side wall of the positioning movable shaft can be docked to limit the range of motion of the positioning movable shaft in the positioning hole, so as to prevent the upper end of the positioning movable shaft from protruding too much from the base and affecting the detection accuracy of the position sensor.

[0012] Preferably, the sensing rod of the position sensor is located directly below the positioning movable shaft. In this way, when the position sensor is used to detect the position of the lower end of the positioning movable shaft, the sensing rod of the position sensor can be contacted with the lower end of the positioning movable shaft to determine whether the lower end of the positioning movable shaft has reached the predetermined position, which can further improve the detection accuracy of the position sensor. Further, the position sensor is installed below the base through a connecting plate, and the connecting plate is provided with a connecting slide for installing the position sensor. In this way, when in use, the fixed position of the position sensor in the connecting slide can be adjusted as needed to adjust the predetermined position to be reached by the lower end of the positioning movable shaft, thereby expanding the scope of application of the bushing press fitting of the utility model. Further preferably, the extending direction of the connecting slide is parallel to the central axis of the positioning movable shaft. In this way, the extending direction of the connecting slide on the connecting plate is parallel to the central axis of the positioning movable shaft, that is, when adjusting the installation fixed position of the position sensor, the adjustment direction is parallel to the central axis direction of the positioning movable shaft, and the adjustment is simple and convenient with high accuracy.

[0013] Preferably, the press-fitting part comprises a lifting guide rod, a press-fitting plate and a lifting drive part, wherein the lifting guide rod is vertically fixed on the base, the press-fitting plate is located above the base and installed on the lifting guide rod, and the press-fitting plate is connected to the driving rod of the lifting drive part and performs lifting motion under the drive of the lifting drive part. In such a press-fitting part, the press-fitting plate performs lifting motion along the lifting guide rod under the drive of the lifting drive part, has a simple structure, and a stable lifting direction, which is convenient for driving the press-fitting sleeve to press the bushing.

[0014] Preferably, the press-fitting plate is provided with a pneumatic pressure rod, which is connected to the press-fitting sleeve and drives the press-fitting sleeve to press down. In this way, during press-fitting, the pneumatic pressure rod can be used to press down the press-fitting sleeve to realize press-fitting of the bushing, and the operation is simple and convenient.

[0015] Preferably, the lifting drive member is a lifting cylinder. In this way, the lifting cylinder is used as the lifting drive member, and the selection and assembly control are simple and convenient.

[0016] Preferably, the bushing press-fitting tool further includes an alarm, which is electrically connected to the position sensor. Thus, when the position sensor cannot detect whether the lower end of the positioning movable shaft has reached the predetermined position, the position sensor can send an alarm signal to the alarm to make the alarm sound an alarm, so that the press-fitting personnel can check and confirm the placement and press-fitting of the bushing in time, and avoid defective products from flowing out of the matching workpiece due to the missing bushing or inadequate press-fitting, thereby affecting product quality.

[0017] Preferably, the bottom of the base is provided with an adjustable foot. Thus, when in use or after being moved, the adjustable foot can be used to adjust the levelness of the base in the bushing press-fitting tool of the utility model to ensure that the base is in a horizontal position, thereby ensuring the press-fitting quality of the bushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a PPS water pump body with a metal bushing pressed in.

[0019] Figure 2 This is a structural schematic diagram of the bushing press-fitting tooling of the utility model;

[0020] Figure 3 It is a schematic diagram of the main view of the bushing press fitting tool shown in the figure;

[0021] Figure 4 for Figure 3 AA cross-sectional structure diagram in;

[0022] Figure 5 for Figure 3 Schematic diagram of the BB cross-sectional structure. DETAILED DESCRIPTION

[0023] Next, combine Figures 2 to 5 , the bushing press-fitting tooling of the utility model is described in detail.

[0024] like Figures 2 to 5 As shown, the bushing press-fitting tool of the utility model comprises a base 1, a position sensor 2 and a press-fitting part, wherein a receiving groove 11 for accommodating a workpiece 4 such as a PPS water pump body is provided on the base 1, and a positioning hole 12 is provided in the receiving groove 11 at a position corresponding to the bushing press-fitting position, and a positioning movable shaft 13 is inserted in the positioning hole 12. Preferably, a positioning boss (not shown in the figure) is provided in the positioning hole 12, and a clamping protrusion 131 that docks with the positioning boss is provided on the side wall of the positioning movable shaft 13. In this way, since the clamping protrusion 13 docks with the positioning boss, that is, the clamping protrusion 13 will be stuck by the positioning boss because its outer diameter is larger than the inner diameter of the positioning boss, when in use, the positioning boss can be docked with the clamping protrusion 131 on the side wall of the positioning movable shaft 13 to limit the range of movement of the positioning movable shaft 13 in the positioning hole 12, so as to avoid the upper end of the positioning movable shaft 13 extending too much from the base 1 and affecting the detection accuracy of the position sensor 2.

[0025] like Figure 4 and 5As shown, the position sensor 2 is arranged below the base 1 to detect the position of the end of the positioning movable shaft 13. Preferably, the position sensor 2 is located directly below the positioning movable shaft 13. In this way, when the position sensor is used to detect the position of the lower end of the positioning movable shaft 13, the lower end of the positioning movable shaft 13 can be determined to reach the predetermined position by contacting the sensing rod 21 of the position sensor 2 with the lower end of the positioning movable shaft 13, which can further improve the detection accuracy of the position sensor 2. Preferably, the position sensor 2 is installed below the base 1 through the connecting plate 5, and the connecting plate 5 is provided with a connecting slide 51 for installing the position sensor 2. In this way, when in use, the fixed position of the position sensor 2 in the connecting slide 51 can be adjusted as needed to adjust the predetermined position to be reached by the lower end of the positioning movable shaft 13, thereby expanding the scope of application of the bushing press fitting tooling of the utility model. Preferably, the extension direction of the connecting slide 51 is parallel to the central axis of the positioning movable shaft 13. In this way, the extension direction of the connecting groove 51 on the connecting plate 5 is parallel to the central axis of the positioning movable shaft 13, that is, when adjusting the installation fixed position of the position sensor 2, the adjustment direction is parallel to the central axis direction of the positioning movable shaft 13, and the adjustment is simple, convenient and accurate. Preferably, an alarm (not shown in the figure) is provided on the bushing press-fitting tool of the utility model, and the alarm is electrically connected to the position sensor 2. In this way, when the position sensor 2 cannot detect whether the lower end of the positioning movable shaft 13 reaches the predetermined position, the position sensor 2 can send an alarm signal to the alarm to make the alarm sound an alarm, so that the press-fitting personnel can check and confirm the placement and press-fitting of the bushing 6 to be pressed in time, and avoid the workpiece 4 from being defective due to the omission of the bushing 6 to be pressed or the inadequate press-fitting, thereby affecting the product quality. In addition, when manufacturing the bushing press-fitting tool of the utility model, a proximity sensor can also be used as the position sensor 2.

[0026] like Figures 2 to 5As shown, the press-fitting part is located above the base 1, and a press-fitting sleeve 31 is provided on the press-fitting part; during the press-fitting process, the press-fitting sleeve 31 is sleeved on the positioning movable shaft 13 and presses the top end of the positioning movable shaft 13, and the free end of the press-fitting sleeve 31 is pressed on the bushing 6 to be pressed, and the press-fitting sleeve 31 presses down the bushing 6 to be pressed and simultaneously presses down the positioning movable shaft 13, and when the position sensor 2 detects that the lower end of the positioning movable shaft 13 reaches the predetermined position, the bushing 6 to be pressed is pressed into place. Preferably, the press-fitting part also includes a lifting guide rod 32, a press-fitting plate 33 and a lifting drive 34, the lifting guide rod 32 is vertically fixed on the base 1, the press-fitting plate 33 is located above the base 1 and installed on the lifting guide rod 32, and the press-fitting plate 33 is connected to the driving rod of the lifting drive 34 and performs lifting movement under the drive of the lifting drive 34. In such a press-fitting part, the press-fitting plate 33 moves up and down along the lifting guide rod 32 under the drive of the lifting drive member 34. The structure is simple and the lifting direction is stable, which is convenient for driving the press-fitting sleeve 31 to press the bushing 6 to be pressed. Preferably, the press-fitting plate 33 is a rectangular structure, and the lifting guide rods 32 are arranged at the four corners of the press-fitting plate 33. The processing and manufacturing are simple and convenient, and the upgrading stability of the press-fitting plate 33 can be improved. Preferably, a pneumatic pressure rod (not shown in the figure) is arranged on the press-fitting plate 33, which is connected to the press-fitting sleeve 31 and drives the press-fitting sleeve 31 to press down. In this way, during press-fitting, the pneumatic pressure rod can be used to press the press-fitting sleeve 31 to realize the press-fitting of the bushing, which is simple and convenient to operate. Preferably, the lifting drive member 34 is a lifting cylinder. In this way, the lifting cylinder is used as the lifting drive member 34, and the selection and assembly control are simple and convenient.

[0027] In addition, if Figures 2 to 5 As shown, in the bushing press-fitting tool of the present invention, an adjustable foot 7 is provided at the bottom of the base 1. In this way, when in use or after moving, the adjustable foot 7 can be used to adjust the levelness of the base 1 in the bushing press-fitting tool of the present invention to ensure that the base 1 is in a horizontal position, thereby ensuring the press-fitting quality of the bushing 6 to be press-fitted, and at the same time expanding the applicable environment of the bushing press-fitting tool of the present invention.

[0028] When the bushing press-fitting tool of the utility model is used to press-fit the bushing into the matching workpiece, after the bushing is placed in the press-fitting position, it is only necessary to start the bushing press-fitting tool of the utility model, and the bushing can be pressed downward by using the press-fitting sleeve on the press-fitting part, and at the same time, the position sensor provided under the base is used to detect the lower end position of the positioning movable shaft. The press-fitting sleeve drives the positioning movable shaft to move downward synchronously during the press-fitting process, and when the bushing is press-fitted into place, the lower end of the positioning movable shaft reaches the predetermined position. It can be seen that when the bushing is press-fitted using the bushing press-fitting tool of the utility model, the position sensor can be used to detect whether the lower end of the positioning movable shaft reaches the predetermined position during the press-fitting process to determine whether the bushing is missed and whether it is press-fitted into place, without the need for manual detection, which can effectively improve the press-fitting efficiency of the bushing and reduce the press-fitting cost of the bushing.

Claims

1. A bushing press-fitting tool, characterized in that: The bushing pressing tool comprises a base and a pressing part, wherein the base is provided with a receiving groove for accommodating a workpiece, and a positioning hole is provided in the receiving groove at a position corresponding to the bushing pressing position, and a positioning movable shaft is inserted in the positioning hole; a position sensor is provided below the base, and the position sensor is used to detect the position of the lower end of the positioning movable shaft; the pressing part is located above the base, and a pressing sleeve is provided on the pressing part; during the pressing process, the pressing sleeve is sleeved on the positioning movable shaft and presses the top end of the positioning movable shaft, and the free end of the pressing sleeve is pressed on the bushing to be pressed, and the pressing sleeve presses down the positioning movable shaft synchronously when pressing down the bushing to be pressed, and when the position sensor detects that the lower end of the positioning movable shaft reaches a predetermined position, the bushing to be pressed is pressed into place.

2. The bushing press-fitting tool according to claim 1, characterized in that: A positioning boss is arranged in the positioning hole, and a clamping protrusion docking with the positioning boss is arranged on the side wall of the positioning movable shaft.

3. The bushing press-fitting tool according to claim 2, characterized in that: The sensing rod of the position sensor is located directly below the positioning movable axis.

4. The bushing press-fitting tool according to claim 3, characterized in that: The position sensor is installed below the base through a connecting plate, and a connecting slide groove for installing the position sensor is provided on the connecting plate.

5. The bushing press-fitting tool according to claim 4, characterized in that: The extending direction of the connecting slide groove is parallel to the central axis of the positioning movable shaft.

6. The bushing press-fitting tool according to any one of claims 1 to 5, characterized in that: The pressing part includes a lifting guide rod, a pressing plate and a lifting drive part. The lifting guide rod is vertically fixed on the base. The pressing plate is located above the base and installed on the lifting guide rod. The pressing plate is connected to the driving rod of the lifting drive part and performs lifting movement under the drive of the lifting drive part.

7. The bushing press-fitting tool according to claim 6, characterized in that: The press-fitting plate is provided with a pneumatic pressure rod, which is connected to the press-fitting sleeve and drives the press-fitting sleeve to press downward.

8. The bushing press-fitting tool according to claim 6, characterized in that: The lifting drive member is a lifting cylinder.

9. The bushing press-fitting tool according to claim 6, characterized in that: The bushing press-fitting tool further comprises an alarm, which is electrically connected to the position sensor.

10. The bushing press-fitting tool according to claim 6, characterized in that: The bottom of the base is provided with adjustable feet.

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