Gasoline engine silencer fixing plate welding tool

Abstract

In order to solve the problems that secondary positioning and clamping exist in a gasoline engine silencer fixing plate welding method in the prior art, operation is complex, welding quality is difficult to guarantee and the like, the utility model provides a gasoline engine silencer fixing plate welding tool which comprises a base plate, a supporting mechanism, a pressure applying mechanism and a pushing mechanism. The base plate is a rectangular plate, and a supporting mechanism, a pressure applying mechanism and a pushing mechanism are fixedly arranged on the base plate; the supporting mechanism is arranged in the middle of the base plate. The two pressure applying mechanisms are respectively fixed on the front side and the rear side of the box body; the two pushing mechanisms are fixed to the outer sides of the fixed plate in a positioning mode respectively. The gasoline engine silencer fixing plate welding tool has the advantages that welding of the left fixing plate and the right fixing plate can be completed through one-time positioning and clamping; and moreover, the labor intensity is reduced, and the welding quality is ensured.

Description

Technical Field

[0001] The utility model relates to a welding technology for a fixing plate of a gasoline engine muffler, and particularly relates to a welding tool for a fixing plate of a gasoline engine muffler. Background Art

[0002] The box body of the gasoline engine muffler is a cube structure with arc-shaped edges and corners, and is assembled by two semi-cube box bodies, upper and lower. After assembly, a protrusion is formed at the joint of the cube box body. In order to fix the gasoline engine muffler on the gasoline engine, it is necessary to weld a fixing plate on each of the left and right sides of the gasoline engine muffler box body. The cross-section of the fixing plate is a double-fold L-shaped structure, with one end welded to the gasoline engine muffler box body (usually referred to as the welding end), and the other end provided with two connecting through holes (usually referred to as the connecting end) (see the attached Figure 1 , in the figure, a is the gasoline engine muffler box body, and b is the fixing plate). According to the design requirements, after the fixing plate is welded, a set distance should be left between the connecting end and the gasoline engine muffler box body and be parallel to the surface of the gasoline engine muffler box body (that is, the connecting end is in a vertical position) to ensure that a fixing nut can be placed and the force is stable and reliable during installation and fixation. The existing welding method for the fixing plate of the gasoline engine muffler uses a simple fixture to clamp the fixing plate on one side of the gasoline engine muffler box body and weld the fixing plate on one side of the gasoline engine muffler box body; then clamp the fixing plate on the other side of the gasoline engine muffler box body and weld the fixing plate on the other side of the gasoline engine muffler box body. Obviously, this welding method using two-position clamping not only has complicated operations, but also it is very difficult to ensure that the welding position of the fixing plate meets the design requirements.

[0003] Obviously, the existing welding method for the fixing plate of the gasoline engine muffler has problems such as two-position clamping, not only complicated operations, but also it is very difficult to ensure the welding quality. Summary of the Invention

[0004] In order to solve the problems of two-position clamping existing in the existing welding method for the fixing plate of the gasoline engine muffler, which not only has complicated operations, but also it is very difficult to ensure the welding quality, the utility model provides a welding tool for a fixing plate of a gasoline engine muffler.

[0005] The welding tooling for the fixing plate of the gasoline engine muffler of the utility model includes a base plate, a supporting mechanism, a pressing mechanism and a pushing mechanism; the base plate is a rectangular plate, and the supporting mechanism, the pressing mechanism and the pushing mechanism are fixedly arranged on the base plate; the supporting mechanism is arranged in the middle of the base plate and includes supporting feet, a box body positioning, a fixing plate positioning and positioning columns; the supporting feet are straight bars with a rectangular cross-section and there are four of them, which are respectively vertically fixed at the four corners of the square in the middle of the base plate; the box body positioning is a rectangular frame structure with a hollow middle part, which is fixed on the upper surfaces of the four supporting feet; the shape and size of the hollow rectangle of the box body positioning match those of the gasoline engine muffler box body, and steps matching the protrusions of the gasoline engine muffler box body are arranged on the inner sides of the four sides of the hollow rectangle; there are two fixing plate positionings, which are respectively arranged on the left and right sides of the box body positioning, and cavities for accommodating the connecting ends of the fixing plate are arranged on the upper parts of the outer sides of the fixing plate positionings; and, two horizontal positioning columns are arranged side by side and outward on the side surfaces of the cavities, and the diameter and spacing of the positioning columns are the same as the through holes of the connecting ends of the fixing plate; the setting position and height of the fixing plate positioning are such that after the gasoline engine muffler box body is placed on the box body positioning, the connecting end of the fixing plate is placed in the cavity of the fixing plate positioning and the through hole of the connecting end of the fixing plate is sleeved on the positioning column, the welding end of the fixing plate is in close contact with the side surface of the gasoline engine muffler box body and the position of the fixing plate meets the design requirements; there are two pressing mechanisms, which are respectively fixed on the front and rear sides of the box body positioning, and when the pressing mechanisms are in the pressing state, the bottom surfaces of the pressing heads just contact the upper surface of the gasoline engine muffler box body placed on the box body positioning; there are two pushing mechanisms, which are respectively fixed on the outer sides of the fixing plate positionings and include a base, a pushing seat, a push rod, a rocker, a double link, a top plate and a top head; the base is a cuboid, the pushing seat is fixed on the upper surface of the base, a horizontal guiding hole is arranged at the front end of the pushing seat, and a hinge hole is arranged at the rear end of the pushing seat; the push rod is slidably installed in the guiding hole; the rocker is a bent long strip, and hinge holes are respectively arranged at the end of the short folded edge and the bent part, the end of which is hinged with the hinge hole of the pushing seat, and the bent part of which is hinged with one end of the double link; the other end of the double link is hinged with the end of the push rod; the top plate is a convex-shaped structure and is vertically fixed at the front end of the push rod; and, blind holes with the same diameter and spacing as the through holes of the connecting ends of the fixing plate are arranged on both sides of the transverse plate of the convex-shaped top plate, and top heads are respectively arranged on both sides of the upper part of the vertical plate of the convex-shaped top plate.

[0006] Furthermore, the pressing mechanism includes a base, a hinge seat, a T-shaped pressing head, a rocker, a connecting rod, and a pressing head. The base is a cuboid, and the hinge seat is fixed on the upper surface of the base. Hinge holes are provided at the front and rear ends of the hinge seat. The bottom of the vertical side of the T-shaped pressing head is hinged to the hinge hole at the front end of the hinge seat. A pressing head is provided on the front side of the horizontal side of the T-shaped pressing head, and a hinge hole is provided on the rear side of the horizontal side of the T-shaped pressing head. The rocker is strip-shaped, and two hinge holes are provided at the front section of the rocker. The hinge hole at its end is hinged to the rear side of the horizontal side of the T-shaped pressing head, and the hinge hole in the middle of it is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to the rear end of the hinge seat.

[0007] Furthermore, the pressing head of the pressing mechanism is of an inverted U-shaped structure. The two legs of the U-shaped pressing head are the pressing heads, and the middle of the cross bar of the U-shaped pressing head is hinged to the front side of the horizontal side of the T-shaped pressing head.

[0008] Furthermore, the pushing head of the pushing mechanism is a flexible pushing head, which includes through holes with inner steps provided on both sides of the upper part of the vertical plate of the top plate, as well as a push rod and a spring. The front end of the push rod is inserted outward through the through hole, and the spring is sleeved on the push rod and is between the front end of the push rod and the top plate.

[0009] The beneficial technical effect of the welding tooling for the gasoline engine muffler fixing plate of the present utility model is that the welding of the left and right fixing plates can be completed with one-time positioning and clamping. Moreover, the labor intensity is reduced and the welding quality is ensured. Description of the Drawings

[0010] Attached Figure 1 is a three-dimensional schematic diagram before and after welding the gasoline engine muffler fixing plate;

[0011] Attached Figure 2 is a three-dimensional schematic diagram of the welding tooling for the gasoline engine muffler fixing plate of the present utility model;

[0012] Attached Figure 3 is a three-dimensional schematic diagram of the support mechanism of the present utility model;

[0013] Attached Figure 4 is a three-dimensional schematic diagram of the pressing mechanism of the present utility model;

[0014] Attached Figure 5 is a three-dimensional schematic diagram of the pushing mechanism of the present utility model;

[0015] Attached Figure 6 is a three-dimensional schematic diagram of the clamping state of the welding tooling of the present utility model;

[0016] Attached Figure 7 is a three-dimensional schematic diagram of the pressing state of the pressing mechanism of the present utility model;

[0017] Attached Figure 8 is a three-dimensional schematic diagram of the pushing state of the pushing mechanism of the present utility model.

[0018] In the figure, 1 is the substrate, 2 is the support mechanism, 3 is the pressing mechanism, 3-1 is the base, 3-2 is the hinge seat, 3-3 is the T-shaped indenter, 3-4 is the rocker, 3-5 is the connecting rod, 3-6 is the indenter, 4 is the pushing mechanism, 4-1 is the base, 4-2 is the pushing seat, 4-3 is the push rod, 4-4 is the rocker, 4-5 is the connecting rod, 4-6 is the indenter; a is the gasoline engine muffler box body, and b is the fixing plate.

[0019] The following further describes the welding tooling for the fixing plate of the gasoline engine muffler of the present invention in conjunction with the accompanying drawings and specific embodiments. Specific Embodiments

[0020] See the attached Figure 2 、 3, 5, 6, 7, 8, the welding tooling for the fixing plate of the gasoline engine muffler of the present utility model includes a base plate 1, a supporting mechanism 2, a pressing mechanism 3 and a pushing mechanism 4; the base plate is a rectangular plate, and the supporting mechanism, the pressing mechanism and the pushing mechanism are fixedly arranged on the base plate; the supporting mechanism is arranged in the middle of the base plate and includes supporting feet 2-1, a box body positioning 2-2, a fixing plate positioning 2-3 and positioning columns 2-4; the supporting feet are straight bars with a rectangular cross-section and there are four of them, which are respectively vertically fixed at the four corners of the square in the middle of the base plate; the box body positioning is a rectangular frame structure with a hollow middle, and is fixed on the upper surfaces of the four supporting feet; the shape and size of the hollow rectangle of the box body positioning match those of the gasoline engine muffler box body, and steps matching the protrusions of the gasoline engine muffler box body are arranged on the inner sides of the four sides of the hollow rectangle; there are two fixing plate positionings, which are respectively arranged on the left and right sides of the box body positioning, and a cavity for accommodating the connecting end of the fixing plate is arranged on the upper part of the outer side surface of the fixing plate positioning; and, two horizontal positioning columns are arranged side by side and outward on the side surface of the cavity, and the diameter and spacing of the positioning columns are the same as the through holes of the connecting end of the fixing plate; the setting position and height of the fixing plate positioning are such that after the gasoline engine muffler box body is placed on the box body positioning, the connecting end of the fixing plate is placed in the cavity of the fixing plate positioning and the through hole of the connecting end of the fixing plate is sleeved on the positioning column, the welding end of the fixing plate is in close contact with the side surface of the gasoline engine muffler box body and the position of the fixing plate meets the design requirements; the pressing mechanism has two, which are respectively fixed on the front and rear sides of the box body positioning, and when the pressing mechanism is in the pressing state, the bottom surface of the pressing head just contacts the upper surface of the gasoline engine muffler box body placed on the box body positioning; the pushing mechanism has two, which are respectively fixed on the outer sides of the fixing plate positioning and include a base 4-1, a pushing seat 4-2, a push rod 4-3, a rocker 4-4, a double link 4-5, a top plate 4-6 and a top head 4-7; the base is a cuboid, the pushing seat is fixed on the upper surface of the base, a horizontal guiding hole is arranged at the front end of the pushing seat, and a hinge hole is arranged at the rear end of the pushing seat; the push rod is slidably installed in the guiding hole; the rocker is a bent long strip, and hinge holes are respectively arranged at the end of the short folded edge and the bending part, the end of which is hinged with the hinge hole of the pushing seat, and the bending part of which is hinged with one end of the double link; the other end of the double link is hinged with the end of the push rod; the top plate is a convex-shaped structure and is vertically fixed at the front end of the push rod; and, blind holes with the same diameter and spacing as the through holes of the connecting end of the fixing plate are arranged on both sides of the transverse plate of the convex-shaped top plate, and top heads are respectively arranged on both sides of the upper part of the vertical plate of the convex-shaped top plate.During actual use, place the gasoline engine muffler box on the box positioning, and set the pressing mechanism to the pressing state. Thus, the positioning and clamping of the gasoline engine muffler box are completed. Place the connecting end of the fixing plate in the cavity of the fixing plate positioning on one side, and sleeve the connecting end through-hole on the positioning post. Pull the rocker, and the push rod drives the top plate to move forward. The blind hole on the cross plate of the top plate is sleeved on the positioning post. At the same time, the top head on the vertical plate of the top plate abuts against the surface of the welded end of the fixing plate. Thus, the fixing plate is positioned and clamped at the set position. Repeat the same operation to complete the positioning and clamping of the fixing plate on the other side. Obviously, welding under the condition that the fixing plate is positioned and clamped at the set position is not only simple in operation but also can ensure the welding quality. The welding tooling for the fixing plate of the gasoline engine muffler of the present invention adopts the coordinated cooperation of the fixing plate positioning and the top-pushing mechanism to realize the accurate positioning and clamping of the fixing plate. Setting the positioning post on one side of the fixing plate positioning allows the through-hole of the fixing plate to be sleeved on the fixing post when placing the fixing plate, which not only realizes the positioning of the fixing plate but also makes the fixing plate not fall off the fixing plate positioning without applying a top-pushing force. The top plate of the top-pushing mechanism applies a top-pushing force to both the connecting end and the welding end of the fixing plate at the same time, so that the fixing plate is firmly positioned and clamped at the set position.

[0021] See appendix Figure 4 As one of the preferred technical solutions, the pressing mechanism includes a base 3-1, a hinge seat 3-2, a T-shaped pressing head 3-3, a rocker 3-4, a connecting rod 3-5, and a pressing head 3-6. The base is a cuboid, and the hinge seat is fixed on the upper surface of the base. Hinge holes are provided at both the front and rear ends of the hinge seat. The bottom of the vertical side of the T-shaped pressing head is hinged to the hinge hole at the front end of the hinge seat. A pressing head is provided on the front side of the horizontal side of the T-shaped pressing head, and a hinge hole is provided on the rear side of the horizontal side of the T-shaped pressing head. The rocker is long and strip-shaped. Two hinge holes are provided at the front section of the rocker. The hinge hole at its end is hinged to the rear side of the horizontal side of the T-shaped pressing head, and the hinge hole in the middle of it is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to the rear end of the hinge seat. The pressing mechanism of the present invention uses the rocker as the drive. When the rocker is lifted upward, the front end of the rocker drives the rear side of the T-shaped pressing head to move downward, and the pressing head provided on the front side of the T-shaped pressing head is lifted upward. When the rocker is pressed downward, the front end of the rocker drives the rear side of the T-shaped pressing head to lift upward, and the pressing head provided on the front side of the T-shaped pressing head presses downward.

[0022] As one of the preferred technical solutions, the pressing head of the pressing mechanism is of an inverted U-shaped structure. The two legs of the U-shaped pressing head are the pressing heads, and the middle of the cross bar of the U-shaped pressing head is hinged to the front side of the horizontal side of the T-shaped pressing head. The middle of the U-shaped pressing head is hinged to the horizontal side of the T-shaped pressing head, which can adaptively adjust to the slight unevenness of the pressed surface during pressing to ensure stable and reliable pressing.

[0023] As one of the preferred technical solutions, the top head of the pushing mechanism is a flexible top head, including through holes with inner steps arranged on both sides of the upper part of the vertical plate of the top plate, as well as a top rod and a spring; the front end head of the top rod is inserted outwardly into the through holes, and the spring is sleeved on the top rod and is located between the front end head of the top rod and the top plate. In this way, when the front end head of the top rod contacts the surface of the welding end of the fixed plate, the spring continues to apply pressure, and the cross plate of the top plate can continue to move forward, so as to ensure that the cross plate of the top plate continues to move forward until the blind holes on both sides are sleeved onto the positioning columns, and the end surface of the blind hole is in close contact with the surface of the connection end of the fixed plate.

[0024] Obviously, the beneficial technical effect of the welding tooling for the fixed plate of the gasoline engine muffler of the present utility model is that it can complete the welding of the left and right fixed plates with one-time positioning and clamping; moreover, it reduces the labor intensity and ensures the welding quality.

Claims

1. A welding tooling for the fixing plate of a gasoline engine muffler, characterized in that, The welding tooling includes a base plate, a supporting mechanism, a pressing mechanism and a pushing mechanism; the base plate is a rectangular plate, and the supporting mechanism, the pressing mechanism and the pushing mechanism are fixedly arranged on the base plate; the supporting mechanism is arranged in the middle of the base plate and includes supporting feet, a box body positioning part, a fixing plate positioning part and positioning columns; the supporting feet are straight bars with a rectangular cross-section and there are four of them, which are respectively vertically fixed at the four corners of the square in the middle of the base plate; the box body positioning part is a rectangular frame structure with a hollow middle part, and is fixed on the upper surfaces of the four supporting feet; the shape and size of the hollow rectangle of the box body positioning part match those of the gasoline engine muffler box body, and steps matching the protrusions of the gasoline engine muffler box body are arranged on the inner sides of the four sides of the hollow rectangle; there are two fixing plate positioning parts which are respectively arranged on the left and right sides of the box body positioning part, and cavities for accommodating the connecting ends of the fixing plates are arranged on the upper parts of the outer sides of the fixing plate positioning parts; and, two horizontal positioning columns are arranged side by side and outward on the side surfaces of the cavities, and the diameter and spacing of the positioning columns are the same as the through holes of the connecting ends of the fixing plates; the setting position and height of the fixing plate positioning part are such that after the gasoline engine muffler box body is placed on the box body positioning part, the connecting end of the fixing plate is placed in the cavity of the fixing plate positioning part and the through hole of the connecting end of the fixing plate is sleeved on the positioning column, the welding end of the fixing plate is in close contact with the side surface of the gasoline engine muffler box body and the position of the fixing plate meets the design requirements; the pressing mechanism has two parts, which are respectively fixed on the front and rear sides of the box body positioning part, and when the pressing mechanism is in the pressing state, the bottom surface of the pressing head just contacts the upper surface of the gasoline engine muffler box body placed on the box body positioning part; the pushing mechanism has two parts, which are respectively fixed on the outer sides of the fixing plate positioning parts and include a base, a pushing seat, a push rod, a rocker, a double link, a top plate and a top head; the base is a cuboid, the pushing seat is fixed on the upper surface of the base, a horizontal guiding hole is arranged at the front end of the pushing seat, and a hinge hole is arranged at the rear end of the pushing seat; the push rod is slidably installed in the guiding hole; the rocker is a bent long strip, and hinge holes are respectively arranged at the end of the short folded edge and the bent part thereof, the end of which is hinged with the hinge hole of the pushing seat, and the bent part thereof is hinged with one end of the double link; the other end of the double link is hinged with the end of the push rod; the top plate is a convex-shaped structure and is vertically fixed at the front end of the push rod; and, blind holes with the same diameter and spacing as the through holes of the connecting ends of the fixing plates are arranged on both sides of the horizontal plate of the convex-shaped top plate, and top heads are respectively arranged on both sides of the upper part of the vertical plate of the convex-shaped top plate.

2. The gasoline engine muffler fixing plate welding tooling according to claim 1, characterized in that, The pressing mechanism includes a base, a hinge seat, a T-shaped pressing head, a rocker, a connecting rod and a pressing head; the base is a cuboid, the hinge seat is fixed on the upper surface of the base, and hinge holes are arranged at both the front and rear ends of the hinge seat; the bottom of the vertical side of the T-shaped pressing head is hinged with the hinge hole at the front end of the hinge seat, a pressing head is arranged on the front side of the horizontal side of the T-shaped pressing head, and a hinge hole is arranged on the rear side of the horizontal side of the T-shaped pressing head; the rocker is a long strip, and two hinge holes are arranged at the front section of the rocker, the end hinge hole thereof is hinged with the rear side of the horizontal side of the T-shaped pressing head, and the middle hinge hole thereof is hinged with one end of the connecting rod; the other end of the connecting rod is hinged with the rear end of the hinge seat.

3. The gasoline engine muffler fixing plate welding tooling according to claim 2, characterized in that, The pressure head of the pressing mechanism is of an inverted U-shaped structure. The two legs of the U-shaped pressure head are the pressing heads, and the middle of the cross bar of the U-shaped pressure head is hinged to the front side of the cross side of the T-shaped pressure head.

4. The gasoline engine muffler fixing plate welding tooling according to claim 1, characterized in that, The ejector head of the pushing mechanism is a flexible ejector head, which includes through holes with inner steps arranged on both sides of the upper part of the vertical plate of the top plate, as well as ejector rods and springs; the front end heads of the ejector rods are inserted outwards through the through holes, and the springs are sleeved on the ejector rods and are between the front end heads of the ejector rods and the top plate.

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