A positioning tool for assembling valve seat and cooler

Abstract

The present invention discloses a positioning tool for assembling a valve seat and a cooler, comprising: a mounting plate; a V-shaped block fixed on the mounting plate; a positioning mechanism fixed on the mounting plate, comprising two positioning plates and three positioning pins, the two positioning plates being vertically fixed on both sides of the V-shaped block, the first positioning pin being movably arranged on the two positioning plates and its position corresponding to the position of the circular hole of the valve seat, the second positioning pin and the third positioning pin being movably arranged on the upper part of a positioning plate and their positions corresponding one to one to the positions of the two bracket holes of the cooler respectively; a clamping mechanism comprising two profiling clamps, the first profiling clamp being fixed on a positioning plate, and the second profiling clamp being movably arranged on the other side of the flange of the valve seat. The use of this positioning tool does not require manual assistance, is simple to operate, can quickly and effectively fix the product and assemble it reasonably, meets the design requirements, and continuously and stably meets the technical requirements, has high production efficiency, and meets the assembly design needs of the EGR industry.

Description

Technical Field

[0001] The invention relates to the technical field of EGR cooling systems, and in particular to a positioning tool for assembling a valve seat and a cooler. Background Art

[0002] The bolts are screwed directly into the threaded holes of the connected parts without using nuts. The structure is simpler and more compact than studs. This connection type is used when one of the two connecting parts is thicker and does not need to be disassembled frequently (to avoid damage to the threaded holes). For example, the connection between the valve seat and the cooler in the EGR cooling system adopts this connection type.

[0003] The bolts are screwed into the threads of the cooler flange hole and the valve seat flange hole in turn, and the valve seat and cooler are connected together by bolts (without nuts) to achieve the installation and fixation of the two products. However, the bottom surface of the flange of this product has an arc structure or curvature, and it cannot be placed independently on the workbench. When assembling the two products, one person is required to hold the valve seat, and the other person uses a torque wrench to tighten the bolts for assembly. According to the drawings and process requirements, the assembly torque of the bolts here is 25N·m. When tightening the bolts with a torque wrench under manual assistance, the product is easy to rotate (mainly because the person assisting cannot hold and stabilize the corresponding product), and it is difficult to achieve a torque of 25N·m, making assembly inconvenient, difficult, and inefficient. Summary of the Invention

[0004] To this end, the present invention provides a positioning tool for assembling a valve seat and a cooler to solve the above technical problems.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A positioning tool for assembling a valve seat and a cooler, comprising:

[0007] The base comprises a mounting plate and a height seat provided under the mounting plate for increasing the height;

[0008] A V-shaped block fixed to the mounting plate, used to support the bottom of the valve seat arc;

[0009] A positioning mechanism fixed to the mounting plate comprises two positioning plates and three positioning pins, wherein the two positioning plates are vertically fixed to the mounting plate and are located on both sides of the V-shaped block, the first positioning pin is movably provided on the two positioning plates and its position corresponds to the position of the circular hole of the valve seat, the second positioning pin and the third positioning pin are movably provided on the upper part of one positioning plate and their positions correspond one to one with the positions of the two bracket holes of the cooler respectively;

[0010] The clamping mechanism includes two contoured clamping blocks whose heights correspond to the heights of the flange of the valve seat. The first contoured clamping block is fixed to one of the positioning plates, and the second contoured clamping block is arranged on the other side of the flange of the valve seat. The opposite sides of the two contoured clamping blocks are adapted to the shapes of the two ends of the flange of the valve seat in the length direction, and the second contoured clamping block can be moved along the length direction of the flange of the valve seat.

[0011] Furthermore, the height base includes an upper base plate, a lower base plate and support columns. The upper base plate is fixed under the mounting plate, and the lower base plate is connected and fixed to the upper base plate through the support columns.

[0012] Furthermore, one of the mounting plate and the upper base plate is provided with a waist-shaped through hole, and the other is provided with a circular through hole, and the mounting plate and the upper base plate are connected by bolts and nuts; the lower base plate is provided with a waist-shaped through hole, and is fixed to the automatic line operating table by bolts and nuts.

[0013] Furthermore, the first positioning plate and the second positioning plate are arranged in parallel and opposite to each other, the height of the first positioning plate is lower than that of the second positioning plate, the upper end of the first positioning plate is provided with a first pin hole, the middle section of the second positioning plate is provided with a second pin hole, and the first positioning pin is movably passed through the first pin hole and the second pin hole; when the arc bottom of the valve seat is placed on the V-block, the first pin hole and the second pin hole are coaxial with the circular hole of the valve seat.

[0014] Furthermore, the positioning mechanism also includes two support plates, which are respectively fixed on both sides of the width direction of the second positioning plate, the height of the first support plate is lower than the height of the second support plate, the first support plate is provided with a third pin hole, and the second positioning pin is movably inserted into the third pin hole, and the second support plate is provided with a fourth pin hole, and the third positioning pin is movably inserted into the fourth pin hole; when the cooler is placed on the valve seat and the threaded holes of the two are aligned, the third pin hole is coaxial with one bracket hole of the cooler, and the fourth pin hole is coaxial with another bracket hole of the cooler.

[0015] Furthermore, the length direction of the V-groove of the V-shaped block is parallel to the width direction of the positioning plate.

[0016] Furthermore, the clamping mechanism also includes a pusher frame and a pusher, the pusher frame is fixedly connected to the mounting plate or positioning plate, the body of the pusher is fixed on the pusher frame and is located on the side of the flange of the second contoured clamp away from the valve seat, and the push rod of the pusher is connected to the second contoured clamp.

[0017] Furthermore, the fader rack includes a fader plate, a fader seat and faders, the fader plate is fixed on the mounting plate, and the fader seat is fixed on the top of the fader plate.

[0018] The present invention has the following advantages:

[0019] The use of this positioning tool does not require manual assistance and is simple to operate. It can quickly and effectively fix the product and assemble it reasonably to meet the design requirements and continuously and stably meet the technical requirements. It has high production efficiency and meets the assembly design needs of the EGR industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons skilled in the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0022] Figure 1 A schematic diagram of a positioning tool for assembling a valve seat and a cooler provided by an embodiment of the present invention during positioning and assembling of the valve seat and the cooler;

[0023] Figure 2 A schematic structural diagram of the positioning tooling provided in an embodiment of the present invention.

[0024] In the figure: 1-lower base plate, 2-support column, 3-upper base plate, 4-first positioning plate, 5-V-block, 6-first positioning pin, 7-valve seat, 8-first contoured clamping block, 9-bolt, 10-second positioning pin, 11-first support plate, 12-second positioning plate, 13-second support plate, 14-third positioning pin, 15-cooler, 16-second contoured clamping block, 17-pudder, 18-pudder seat, 19-pudder plate, 20-mounting plate. DETAILED DESCRIPTION

[0025] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0026] The terms "upper", "lower", "left", "right", "middle", etc. used in this specification are only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of the present invention without substantially changing the technical content.

[0027] like Figure 1 and 2 As shown, this embodiment provides a positioning tool for assembling a valve seat and a cooler, including a base, a V-shaped block 5, a positioning mechanism and a clamping mechanism.

[0028] The base is the foundation of the entire tooling. On the one hand, it is fixed to the automatic line operating table, and on the other hand, it is used to support or install the V-block 5, the positioning mechanism and the clamping mechanism. The base includes a mounting plate 20 and a height seat arranged under the mounting plate 20. The height seat is a device used to increase the height of the tooling. Because the bottom plate of the automatic line is low, it is difficult to place the tooling directly on the automatic line manually. The height seat includes an upper base plate 3, a lower base plate 1 and four support columns 2. The upper base plate 3 is fixed under the mounting plate 20, and the lower base plate 1 is connected and fixed to the upper base plate 3 through the four support columns 2. One of the mounting plate 20 and the upper base plate 3 is provided with a waist-shaped through hole, and the other is provided with a circular through hole. The mounting plate 20 and the upper base plate 3 are connected by bolts and nuts; or, the lower base plate 1 is provided with a waist-shaped through hole, which is fixed to the automatic line operating table by bolts and nuts; in this way, the placement position of the tooling can be flexibly and appropriately adjusted.

[0029] The V-shaped block 5 is fixed on the mounting plate 20 and is used to support the arc bottom of the valve seat 7. As shown in the figure, the length direction of the V groove of the V-shaped block 5 is set along the left-right direction.

[0030] The positioning mechanism is fixed on the mounting plate 20 and is used to position the valve seat 7 and the cooler 15. The positioning mechanism includes two positioning plates, three positioning pins and two support plates. The two positioning plates are vertically fixed on the mounting plate 20; the first positioning plate 4 is shorter (lower) and is located on the front side of the V-block 5; the second positioning plate 12 is longer (higher) and is located on the rear side of the V-block 5; the width direction of the two positioning plates is arranged along the left and right direction. A first pin hole is provided at the upper end of the first positioning plate 4, and a second pin hole is provided at the middle section of the second positioning plate 12. The first positioning pin 6 is movably inserted into the first pin hole and the second pin hole. When the arc bottom of the valve seat 7 is placed on the V-block 5, the first pin hole and the second pin hole are coaxial with the circular hole of the valve seat 7. The two support plates are respectively fixed on the left and right sides of the upper end of the second positioning plate 12; the height of the first support plate 11 is lower than the height of the second support plate 13; the first support plate 11 is provided with a third pin hole, and the second positioning pin 10 is movably inserted into the third pin hole; the second support plate 13 is provided with a fourth pin hole, and the third positioning pin 14 is movably inserted into the fourth pin hole; when the cooler 15 is placed on the valve seat and the threaded holes of the two are aligned, the third pin hole is coaxial with one bracket hole of the cooler 15, and the fourth pin hole is coaxial with another bracket hole of the cooler 15.

[0031] The clamping mechanism is connected and fixed to the mounting plate 20 or positioning plate. The clamping mechanism includes two profiling clamps, a pusher frame, and a pusher 17. The first profiling clamp 8 is fixed to a positioning plate, and its height corresponds to the height of the flange of the valve seat 7 (the upper surface of the profiling clamp is slightly higher). The second profiling clamp 16 is located on the other side of the flange of the valve seat 7, at the same height as the first profiling clamp 8, and can move along the length of the flange of the valve seat 7. It is connected to the push rod of the pusher 17 and moves left and right under the pusher 17 (the length of the flange of the valve seat 7 is also the left and right direction in the figure). The opposing sides of the two profiling clamps are adapted to the shape of the two ends of the flange of the valve seat 7 in the length direction. When the two profiling clamps are clamped, they can limit the position of the gasket placed on the valve seat 7 and prevent it from protruding from the edge of the flange of the valve seat 7. The pusher frame is fixedly connected to the mounting plate 20 or positioning plate; in this embodiment, as shown in the figure, it is fixedly connected to the mounting plate 20. The body of fader 17 is fixed to the fader frame and located to the right of second contoured clamping block 16. Its push rod is connected to second contoured clamping block 16. Fader 17 is a conventional elastic reset device. Under the action of elastic force, the push rod extends toward first contoured clamping block 8, thereby clamping the two contoured clamping blocks together. As shown in the figure, fader 17 has an extended push rod on the left side and a handle on the right side, connected to the right end of the push rod. Pulling the handle moves the push rod and second contoured clamping block 16 to the right, away from first contoured clamping block 8. The fader frame comprises a fader plate 19, a fader base 18, and faders 17. The fader plate 19 is fixed to the mounting plate 20, and the fader base 18 is fixed to the top of the fader plate 19.

[0032] The method of using the positioning tool of this embodiment is as follows: the valve seat 7 is placed on the V-block 5, and the arc bottom of the valve seat 7 is against the V-groove of the V-block 5; the first positioning pin 6 passes through the two positioning plates and the circular hole of the valve seat 7, thereby fixing the valve seat 7, and at this time the flange of the valve seat 7 faces upward; the gasket (a part commonly used when connecting the valve seat and the cooler) is placed on the flange of the valve seat 7, and the two contoured clamps are clamped tightly to locate the position of the valve seat 7 while preventing the gasket from protruding from the edge of the flange; the flange of the cooler 15 connected to the valve seat 7 faces downward, the cooler 15 is placed on the gasket, and the second positioning pin 10 and the third positioning pin 14 pass through the two bracket holes to position the cooler; tighten the bolt 9 with a torque of 25N·m to connect the valve seat 7 and the cooler 15.

[0033] The advantages of the positioning tool of this embodiment are as follows: using this positioning tool, no manual assistance is required, the operation is simple, the product can be fixed quickly and effectively and assembled reasonably, the design requirements can be met, and the technical requirements can be met continuously and stably, the production efficiency is high, and the assembly design requirements of the EGR industry can be met.

[0034] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made thereto. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A positioning tool for assembling a valve seat and a cooler, characterized in that: include: A base, comprising a mounting plate and a height seat provided below the mounting plate; A V-shaped block fixed to the mounting plate, used to support the bottom of the valve seat arc; A positioning mechanism fixed to the mounting plate comprises two positioning plates and three positioning pins, wherein the two positioning plates are vertically fixed to the mounting plate and are located on both sides of the V-shaped block, the first positioning pin is movably provided on the two positioning plates and its position corresponds to the position of the circular hole of the valve seat, the second positioning pin and the third positioning pin are movably provided on the upper part of one positioning plate and their positions correspond one to one with the positions of the two bracket holes of the cooler respectively; The clamping mechanism includes two profiling clamping blocks having a height corresponding to the height of the flange of the valve seat, the first profiling clamping block being fixed to one of the positioning plates, and the second profiling clamping block being arranged on the other side of the flange of the valve seat, the opposite sides of the two profiling clamping blocks being adapted to the shapes of both ends of the flange in the length direction of the valve seat, and the second profiling clamping block being movable along the length direction of the flange of the valve seat; The first positioning plate and the second positioning plate are arranged parallel to and opposite to each other, the height of the first positioning plate is lower than that of the second positioning plate, the upper end of the first positioning plate is provided with a first pin hole, the middle section of the second positioning plate is provided with a second pin hole, and the first positioning pin is movably inserted into the first pin hole and the second pin hole; when the arc bottom of the valve seat is placed on the V-shaped block, the first pin hole and the second pin hole are coaxial with the circular hole of the valve seat; The positioning mechanism also includes two support plates, the two support plates are respectively fixed on both sides of the width direction of the second positioning plate, the height of the first support plate is lower than the height of the second support plate, the first support plate is provided with a third pin hole, the second positioning pin is movably inserted into the third pin hole, the second support plate is provided with a fourth pin hole, the third positioning pin is movably inserted into the fourth pin hole; when the cooler is placed on the valve seat and the threaded holes of the two are aligned, the third pin hole is coaxial with one bracket hole of the cooler, and the fourth pin hole is coaxial with the other bracket hole of the cooler; The clamping mechanism also includes a pusher frame and a pusher, the pusher frame is fixedly connected to the mounting plate or the positioning plate, the body of the pusher is fixed on the pusher frame and is located on the side of the flange of the second contoured clamping block away from the valve seat, and the push rod of the pusher is connected to the second contoured clamping block.

2. The positioning tool according to claim 1, characterized in that: The height seat includes an upper base plate, a lower base plate and support columns. The upper base plate is fixed under the mounting plate, and the lower base plate is connected and fixed to the upper base plate through the support columns.

3. The positioning tool according to claim 2, characterized in that: One of the mounting plate and the upper base plate is provided with a waist-shaped through hole, and the other is provided with a circular through hole. The mounting plate and the upper base plate are connected by bolts and nuts; the lower base plate is provided with a waist-shaped through hole and is fixed to the automatic line operating table by bolts and nuts.

4. The positioning tool according to claim 1, characterized in that: The length direction of the V-groove of the V-shaped block is parallel to the width direction of the positioning plate.

5. The positioning tool according to claim 1, characterized in that: The fader rack comprises a fader plate, a fader seat and faders. The fader plate is fixed on the mounting plate, and the fader seat is fixed on the top of the fader plate.

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