A back positioning feeding tool

Abstract

The application relates to a reverse-positioning feeding tool, and relates to the field of timing cover gluing processing technology, which comprises a bottom plate, four fixed round pins and two adjustable round pins are installed on the bottom plate, four fixed round pins and two adjustable round pins are arranged in correspondence with screw hole positions on a timing cover; two rotating positioning pins for positioning the top surface of the timing cover are further installed on the bottom plate. The application improves the positioning precision of the reverse side of the supporting surface of the timing cover.

Description

Technical Field

[0001] This application relates to the field of timing cover adhesive coating technology, and in particular to a reverse positioning and feeding fixture. Background Technology

[0002] The main functions of an engine timing cover are sealing and noise reduction. It forms a sealed space with the front face of the engine block, enclosing the timing belt, pulleys, tensioners, and other components in the engine transmission. Isolating other parts from the timing system prevents contamination from oil, water, mud, and other debris. In addition, sealing the engine timing system with the front face of the engine block also prevents impacts from foreign objects, which plays a positive role in reducing engine noise. Therefore, timing covers are widely used in engines.

[0003] During the timing cover adhesive application process, a loading fixture is often required for auxiliary positioning. In existing technologies, off-line loading fixtures have positioning holes on the support surface, which can accurately and reliably position the workpiece. However, for workpieces with positioning holes on the opposite side of the support surface and which are blind holes, precise positioning is often abandoned, and low-precision threaded holes are used for positioning. This greatly reduces the positioning accuracy of the workpiece, and when the adhesive is applied by the adhesive application equipment, the adhesive line may deviate or the workpiece may fail to meet the requirements. Utility Model Content

[0004] In order to improve the positioning accuracy of the opposite side of the support surface of the timing cover, this application provides a reverse positioning and feeding fixture.

[0005] The reverse positioning and feeding fixture provided in this application adopts the following technical solution: A reverse positioning and feeding fixture includes a base plate, on which four fixed round pins and two adjustable round pins are installed. The four fixed round pins and the two adjustable round pins are all set at the positions of the screw holes on the timing cover. The base plate is also equipped with two rotary positioning pins for positioning the top surface of the timing cover.

[0006] By adopting the above technical solution, when using the tooling to position the timing cover, the operator can first align the screw holes of the timing cover with the positions of the four fixed pins and the two adjustable pins, and place the timing cover on the tooling to perform rough positioning of the timing cover. Then, the operator can use the two rotating positioning pins to position the two blind holes on the top of the timing cover to perform precise positioning of the opposite side of the timing cover support surface.

[0007] Preferably, each adjustable pin includes a pin seat and a pin sleeve. The pin seat is bolted to the top surface of the base plate, and each pin seat includes a central screw. The bottom of each pin sleeve has a mounting screw hole, and the pin sleeve is threadedly connected to the screw.

[0008] By adopting the above technical solution, the height of the pin sleeve can be changed by twisting the pin sleeve, which further improves the stability and accuracy of positioning the timing cover.

[0009] Preferably, the rotary positioning pin includes a fixing seat bolted to the base plate, the fixing seat having an installation cavity inside, and the top of the fixing seat having a sliding hole extending through along the axial direction; A connecting rod is slidably connected inside the sliding hole. A positioning block is bolted to the end of the connecting rod that extends out of the sliding hole. A positioning post that matches the blind hole is fixedly connected to the bottom of the positioning block. A convex ring is integrally formed on the outer edge of the bottom of the connecting rod. A spring is coaxially sleeved on the connecting rod. The spring abuts against the convex ring and the inner wall of the mounting cavity.

[0010] By adopting the above technical solution, when the operator needs to use the rotating positioning pin, the positioning block and connecting rod can be pulled up, and the positioning block can be rotated so that the positioning post at the bottom of the positioning block is aligned with the blind hole on the opposite side of the workpiece support surface. Then the positioning block can be moved down so that the positioning post is inserted into the blind hole on the opposite side of the workpiece support surface, thereby achieving precise positioning of the opposite side of the workpiece support surface.

[0011] Preferably, the top of the fixing base is provided with a slot for placing the positioning block.

[0012] By adopting the above technical solution, the positioning block can be stored in the slot, thus preventing the positioning block from colliding with the workpiece and causing damage to the workpiece during the process of placing the workpiece on the tooling.

[0013] Preferably, two handles are fixedly installed on the base plate.

[0014] By adopting the above technical solution, the handle can improve the convenience for operators to transfer and move tooling.

[0015] Preferably, both the bottom of the fixed round pin and the bottom of the rotating positioning pin are equipped with height adjustment pads.

[0016] By adopting the above technical solution, the height of the fixed round pin and the rotating positioning pin can be adjusted using the height adjustment pad, so that the tooling and the workpiece are matched at the same height.

[0017] In summary, the reverse positioning and feeding fixture of this application has at least one of the following beneficial technical effects: 1. When using a fixture to position the timing cover, the operator can first align the screw holes of the timing cover with the positions of the four fixed pins and the two adjustable pins, and place the timing cover on the fixture to perform rough positioning of the timing cover. Then, the operator can use the two rotating positioning pins to position the two blind holes on the top of the timing cover to perform precise positioning of the opposite side of the timing cover support surface. 2. When the operator needs to use the rotating positioning pin, the positioning block and connecting rod can be pulled up, and the positioning block can be rotated so that the positioning pin at the bottom of the positioning block is aligned with the blind hole on the opposite side of the workpiece support surface. Then the positioning block can be moved down so that the positioning pin is inserted into the blind hole on the opposite side of the workpiece support surface, thereby achieving precise positioning of the opposite side of the workpiece support surface. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating the overall structure of the tooling in an embodiment of this application.

[0019] Figure 2 This is a schematic diagram illustrating the internal structure of the adjustable pin in an embodiment of this application.

[0020] Figure 3 This is a schematic diagram illustrating the internal structure of the rotary positioning pin in an embodiment of this application.

[0021] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Fixed pin; 3. Adjustable pin; 31. Pin seat; 32. Pin sleeve; 33. Screw; 4. Rotary positioning pin; 41. Fixed seat; 42. Mounting cavity; 43. Sliding hole; 44. Connecting rod; 45. Positioning block; 46. Positioning post; 47. Protruding ring; 48. Spring; 49. Slot; 5. Handle; 6. Height adjustment pad. Detailed Implementation

[0022] The following combination Figures 1-3 This application will be described in further detail.

[0023] Example This application discloses a reverse positioning and feeding fixture. (Refer to...) Figure 1 It mainly includes a base plate 1, on which four fixed round pins 2 and two adjustable round pins 3 are installed. The four fixed round pins 2 and the two adjustable round pins 3 are all set at the screw hole positions on the timing cover. The base plate 1 is also equipped with two rotating positioning pins 4 for positioning the top surface of the timing cover.

[0024] When using a fixture to position the timing cover, the operator can first align the screw holes of the timing cover with the positions of the four fixed pins 2 and the two adjustable pins 3, and place the timing cover on the fixture to perform rough positioning of the timing cover. Then, the operator can use the two rotating positioning pins 4 to position the two blind holes on the top of the timing cover to perform precise positioning of the opposite side of the timing cover support surface.

[0025] Reference Figure 1 In this embodiment, height adjustment pads 6 are installed at the bottom of both the fixed round pin 2 and the rotating positioning pin 4. The height adjustment pads 6 can be used to adjust the height of the fixed round pin 2 and the rotating positioning pin 4 so that the tooling and the workpiece are matched at the same height.

[0026] Reference Figure 2 Each adjustable round pin 3 includes a pin seat 31 and a pin sleeve 32. The pin seat 31 is bolted to the top surface of the base plate 1, and each pin seat 31 includes a screw 33 in the middle. The bottom of each pin sleeve 32 is provided with a mounting screw hole, and the pin sleeve 32 is threadedly connected to the screw 33.

[0027] The height of the pin sleeve 32 can be changed by screwing it on, which further improves the stability and accuracy of positioning the timing cover.

[0028] Reference Figure 3 The rotary positioning pin 4 includes a fixing seat 41 bolted to the base plate 1. The fixing seat 41 has an installation cavity 42. The top of the fixing seat 41 has a sliding hole 43 extending through it along the axial direction. A connecting rod 44 is slidably connected in the sliding hole 43. A positioning block 45 is bolted to the end of the connecting rod 44 that extends out of the sliding hole 43. A positioning post 46 that matches the blind hole is fixedly connected to the bottom of the positioning block 45. A protruding ring 47 is integrally formed on the bottom outer edge of the connecting rod 44. A spring 48 is coaxially sleeved on the connecting rod 44. The spring 48 is pressed between the protruding ring 47 and the inner wall of the installation cavity 42.

[0029] When the operator needs to use the rotating positioning pin 4, the positioning block 45 and the connecting rod 44 can be pulled up, and the positioning block 45 can be rotated so that the positioning post 46 at the bottom of the positioning block 45 is aligned with the blind hole on the opposite side of the workpiece support surface. Then the positioning block 45 can be moved down so that the positioning post 46 is inserted into the blind hole on the opposite side of the workpiece support surface, thereby achieving precise positioning of the opposite side of the workpiece support surface.

[0030] Furthermore, the top of the fixed base 41 is provided with a slot 49 for placing the positioning block 45. The positioning block 45 can be stored in the slot 49 to prevent the positioning block 45 from colliding with the workpiece and causing damage to the workpiece during the process of placing the workpiece on the tooling.

[0031] Reference Figure 1Two handles 5 are fixedly installed on the base plate 1. The handles 5 can improve the convenience for operators to transfer and move tooling.

[0032] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A reverse positioning and feeding fixture, characterized in that, Includes a base plate (1), on which four fixed round pins (2) and two adjustable round pins (3) are installed. The four fixed round pins (2) and the two adjustable round pins (3) are all set at the screw hole positions on the timing cover. Two rotating positioning pins (4) for positioning the top surface of the timing cover are also installed on the base plate (1).

2. The reverse positioning and feeding fixture according to claim 1, characterized in that, Each adjustable round pin (3) includes a pin seat (31) and a pin sleeve (32). The pin seat (31) is bolted to the top surface of the base plate (1), and each pin seat (31) includes a screw (33) in the middle. The bottom of each pin sleeve (32) is provided with a mounting screw hole, and the pin sleeve (32) is threaded to the screw (33).

3. The reverse positioning and feeding fixture according to claim 2, characterized in that, The rotary positioning pin (4) includes a fixing seat (41) bolted to the base plate (1), the fixing seat (41) has an installation cavity (42) inside, and the top of the fixing seat (41) has a sliding hole (43) through it along the axial direction. A connecting rod (44) is slidably connected inside the sliding hole (43). A positioning block (45) is bolted to the end of the connecting rod (44) that extends out of the sliding hole (43). A positioning post (46) that matches the blind hole is fixedly connected to the bottom of the positioning block (45). A convex ring (47) is integrally formed on the bottom outer edge of the connecting rod (44). A spring (48) is coaxially sleeved on the connecting rod (44). The spring (48) abuts against the inner wall of the convex ring (47) and the mounting cavity (42).

4. The reverse positioning and feeding fixture according to claim 3, characterized in that, The top of the fixed base (41) is provided with a slot (49) for placing the positioning block (45).

5. The reverse positioning and feeding fixture according to claim 1, characterized in that, Two handles (5) are fixedly installed on the base plate (1).

6. The reverse positioning and feeding fixture according to claim 1, characterized in that, Height adjustment pads (6) are installed at the bottom of the fixed round pin (2) and the bottom of the rotating positioning pin (4).

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