Fixing and pressing tool

Abstract

This utility model provides a fixing and pressing fixture, comprising: a mounting frame; a three-jaw clamping assembly, the three-jaw clamping assembly including three clamping rods spaced apart along the circumferential direction, each clamping rod extending radially and capable of radial movement, the three clamping rods being able to move closer to or further away from each other; a first driving assembly disposed on the mounting frame, the first driving assembly capable of driving the three-jaw clamping assembly to move axially; and a second driving assembly capable of driving the three clamping rods to move closer to or further away from each other. The fixing and pressing fixture provided by this utility model improves the assembly accuracy requirements of the partition, improves the welding stability of the partition, improves the operating efficiency of the fixture, improves the stability of the fixture in use, reduces the later maintenance costs and time of the fixture, and improves the performance of the mixer.

Description

Technical Field

[0001] This utility model belongs to the automotive exhaust aftertreatment industry, and particularly relates to a fixing and pressing tool. Background Technology

[0002] like Figure 1 The image shows a cylindrical mixer for a commercial vehicle's aftertreatment unit. During the assembly process, a partition B needs to be welded above the cylinder A. Partition B has several cat-ear-shaped protrusions. Due to the unique shape and structure of partition B, and the presence of other components below it, positioning, clamping, and welding of partition B can only be performed from above. Traditional clamping and positioning mechanisms typically use contoured positioning blocks to restrict the position of partition B. However, this traditional solution has drawbacks, including low positioning accuracy, unreliable clamping force on partition B, severe tooling wear, and high operational difficulty. This results in low assembly accuracy of partition B, a lack of clamping force to resist welding deformation, and during assembly, the tooling of traditional clamping and positioning mechanisms is easily broken by external impacts. Residue is easily adsorbed onto the product and carried into the next process, leading to high maintenance costs. Summary of the Invention

[0003] To address at least one technical problem in the prior art, this utility model provides a fixing and pressing fixture with high stability and high assembly accuracy. To achieve the above technical objectives, the technical solution adopted by this utility model is as follows:

[0004] This utility model embodiment provides a fixing and pressing fixture, including:

[0005] Mounting bracket,

[0006] The three-grip clamping assembly includes three clamping rods, which are spaced apart in a circumferential direction. Each clamping rod extends radially and is capable of moving radially. The three clamping rods can move closer to or further away from each other.

[0007] A first drive assembly is disposed on the mounting bracket, and the first drive assembly is capable of driving the three-grip clamping assembly to move axially.

[0008] The second drive assembly is capable of driving the three clamping rods closer to or further apart from each other.

[0009] Furthermore, the three-grip clamping assembly also includes three clamping members, each of which is fixedly connected to one end of a clamping rod away from the other clamping rods;

[0010] Each of the clamping members extends axially and toward a direction away from the first drive assembly;

[0011] Each of the clamping members has a groove and / or a protrusion on the side opposite to the clamping rod.

[0012] Furthermore, the mounting bracket is provided with a first mounting hole, which extends axially through the mounting bracket;

[0013] The first drive assembly includes a first cylinder, the first cylinder comprising:

[0014] The first cylinder block is fixedly installed in the first mounting hole;

[0015] A first piston rod extends axially, with one end of the first piston rod disposed in the first cylinder body, and the other end of the first piston rod connected to the three-grip clamping assembly.

[0016] Furthermore, the mounting bracket is also provided with a guide hole, which extends axially through the mounting bracket;

[0017] The first driving component further includes a guiding component, the guiding component comprising:

[0018] A guide bearing, extending axially, is disposed in the guide hole;

[0019] A guide rod, extending axially, is disposed within the guide bearing.

[0020] A limiting plate, one side of which is fixedly connected to the other end of the first piston rod and one end of the guide rod, and the other side of which is fixedly connected to the three-grip clamping assembly;

[0021] A limiting block is fixedly connected to one end of the guide rod that is away from the limiting plate.

[0022] Furthermore, the mounting bracket is provided with two guide holes, one guide hole is located on one side of the first mounting hole, and the other guide hole is located on the other side of the first mounting hole;

[0023] The first drive assembly includes two sets of guide components, each of which is disposed in a guide hole.

[0024] Furthermore, the second drive assembly includes a three-grip chuck cylinder, the three-grip chuck cylinder comprising:

[0025] The chuck cylinder body extends axially, and one end of the three-grip chuck cylinder is fixedly connected to the other side of the limiting plate.

[0026] Three gripping rods are arranged at equal intervals along the circumference, and any one of the gripping rods extends radially. One end of any one of the gripping rods is located in the chuck cylinder, and the other end is fixedly connected to the end of a clamping rod opposite to the clamping member.

[0027] Furthermore, the fixing and pressing fixture also includes a protective cover, which is located at the end of the chuck cylinder body opposite to the first drive assembly.

[0028] Furthermore, the protective cover is made of brass.

[0029] Furthermore, the fixing and pressing fixture also includes a positioning block, which is fixedly connected to the side of the protective cover opposite to the chuck cylinder body. The positioning block includes:

[0030] The positioning block body is circular, and it is provided with several clearance holes.

[0031] Several extensions are provided on the outside of the positioning block body, and the several extensions are spaced apart along the circumferential direction.

[0032] Furthermore, the positioning block is also provided with several magnets.

[0033] The beneficial effects of the technical solution provided by this utility model embodiment are:

[0034] (1) The fixing and pressing tooling provided by this utility model improves the assembly accuracy requirements of the partition, ensures the stability of the partition during welding, improves the operation efficiency and stability of the tooling, and reduces the maintenance cost and time in the later stage.

[0035] (2) The fixing and pressing fixture provided by this utility model adopts the first cylinder to adjust the height of the partition, which facilitates quick installation and improves the efficiency of the fixture operation; the internal expansion clamping force of the three-grip chuck and the magnet on the positioning block are used to clamp the partition, which is highly reliable; the structural design of the positioning block improves the accurate positioning of the partition. The structure is simple, the maintenance needs are reduced, the amount of magnets used is greatly reduced, the overall production cost is reduced, and it is suitable for welding circular partitions of different types of products, meeting the positioning and pressing needs of different products, and has strong versatility. Attached Figure Description

[0036] Figure 1 This is a partial structural diagram of the cylindrical mixer in an embodiment of the present invention.

[0037] Figure 2 This is a structural schematic diagram of the fixing and pressing tooling from one perspective in an embodiment of this utility model.

[0038] Figure 3 This is a structural schematic diagram of the fixing and pressing tooling from another perspective in the embodiments of this utility model.

[0039] Figure 4 This is a partial structural schematic diagram of the fixing and pressing tooling from one perspective in an embodiment of this utility model.

[0040] Figure 5 This is a partial structural schematic diagram of the fixing and pressing tooling from another perspective in an embodiment of this utility model. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0042] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0045] This utility model embodiment provides a fixing and pressing fixture, including:

[0046] Mounting bracket 1,

[0047] The three-grip clamping assembly 2 includes three clamping rods 21, which are spaced apart along the circumferential direction. Each clamping rod 21 extends radially and can move radially. The three clamping rods 21 can move closer to or further away from each other.

[0048] The first drive component 3 is disposed on the mounting frame 1, and the first drive component 3 is capable of driving the three-grip clamping component 2 to move along the axial direction X.

[0049] The second drive assembly 4 is capable of driving the three clamping rods 21 to move closer to or further away from each other.

[0050] This application can be used to clamp partition B and place partition B on cylinder A, wherein partition B is provided with a flange. In a specific embodiment, such as Figure 2 As shown, the first driving component 3 is fixedly connected to the mounting bracket 1 and its lower end is connected to the three-grip clamping component 2. The first driving component 3 can drive the three-grip clamping component 2 to move upward or downward, thereby moving the partition B to different heights, which facilitates the installation of the partition B on the cylinder A at different heights. The three clamping rods 21 are evenly distributed along the circumferential direction. The second driving component 4 can drive the three clamping rods 21 to move closer to each other or further away from each other. When the three clamping rods 21 move away from each other, the three clamping members 22 in the three-grip clamping component 2 can abut against the flange of the partition B, thereby fixing and clamping the partition B. When the three clamping rods 21 move closer to each other, the three clamping members 22 move away from the flange of the partition B, and the three-grip clamping component 2 can release the partition B.

[0051] During operation, the first drive assembly 3 is activated, causing the three-grip clamping assembly 2 to move above the partition B; then the second drive assembly 4 is activated, causing the three clamping rods 21 to move away from each other and abut against the flange of the partition B, thereby fixing the partition B; then the first drive assembly 3 moves the three-grip clamping assembly 2 up or down until it is above the cylinder A; finally, the second drive assembly 4 is activated again, causing the three clamping rods 21 to move closer to each other, so that the three-grip clamping assembly 2 can detach from the partition B, and the partition B can be installed on the cylinder A.

[0052] It should be noted that this application does not limit the specific number of clamping rods 21 in the three-grip clamping assembly 2. In other embodiments, the clamping rods 21 may be two, four or more. In this application, three clamping rods 21 are used, which has a simple structure, low cost and more stable clamping of the partition B.

[0053] The specific configuration of the clamping rod 21 described in this application is not limited. In a specific embodiment, the three-grip clamping assembly 2 further includes three clamping members 22, and any one of the clamping members 22 is fixedly connected to the end of one of the clamping rods 21 that is away from the other clamping rods 21.

[0054] Each of the clamping members 22 extends along the axial direction X and toward a direction away from the first driving component 3;

[0055] Each of the clamping members 22 has a groove and / or a protrusion on the side opposite to the clamping rod 21.

[0056] like Figure 2 and Figure 4 As shown, the outer ends of the three clamping rods 21 are all fixedly connected to the clamping members 22. Each clamping member 22 extends downwards. When the structure clamps the partition B, the clamping member 22 can be inserted into the inner side of the flange of the partition B. This not only facilitates the rapid positioning of the three-grip clamping assembly 2, but also improves the connection between the three-grip clamping assembly 2 and the partition B, thereby improving the stability of the three-grip clamping assembly 2 when clamping the partition B.

[0057] The clamping member 22 has a groove and / or a protrusion on its outer side. The shape, number, position and size of the groove and the protrusion are not limited. For example, a circular groove, a square groove, a diamond-shaped protrusion, an elliptical protrusion, a linear groove, a wavy protrusion, etc. can be used. The groove and the protrusion can increase the roughness of the outer side of the clamping member 22, thereby increasing the friction between the clamping member 22 and the partition B. When the three-grip clamping assembly 2 clamps the partition B, the groove or the protrusion can prevent the partition B from falling off and improve the stability when clamping the partition B.

[0058] This application does not limit the specific configuration of the first drive component 3. In a specific embodiment, the mounting bracket 1 is provided with a first mounting hole, which penetrates the mounting bracket 1 along the axial direction X;

[0059] The first drive assembly 3 includes a first cylinder 31, and the first cylinder 31 includes:

[0060] The first cylinder block 311 is fixedly installed in the first mounting hole;

[0061] The first piston rod 312 extends along the axial direction X. One end of the first piston rod 312 is disposed in the first cylinder 311, and the other end of the first piston rod 312 is connected to the three-grip clamping assembly 2.

[0062] like Figure 4 As shown, the first cylinder 31 extends in the vertical direction, and the lower end of the first piston rod 312 is connected to the three-grip clamping assembly 2. When the first cylinder 31 is activated, when the first piston rod 312 extends forward, it can drive the three-grip clamping assembly 2 away from the first cylinder body 311. When the first piston rod 312 retracts, it can drive the three-grip clamping assembly 2 closer to the first cylinder body 311. Furthermore, when the first piston rod 312 moves in the vertical direction, it can drive the three-grip clamping assembly 2 to move in the vertical direction.

[0063] In another specific embodiment, the first driving component 3 includes a first sleeve and a second sleeve, the first sleeve and / or the second sleeve extending along the axial direction X, the second sleeve sleeve over the first sleeve, and the end of the second sleeve facing away from the first sleeve connected to the three-grip clamping component 2. The first sleeve has a plurality of protrusions, which are spaced apart along the axial direction X. The second sleeve has a through hole. When the second sleeve moves along the axial direction X, and different protrusions are sleeved on the through hole, the second sleeve can be transferred to different positions, thereby enabling the three-grip clamping component 2 to be carried to different heights.

[0064] Furthermore, the mounting bracket 1 is also provided with a guide hole, which penetrates the mounting bracket 1 along the axial direction X;

[0065] The first driving component 3 further includes a guiding component 32, the guiding component 32 comprising:

[0066] A guide bearing 321 extends along the axial direction X and is disposed in the guide hole;

[0067] Guide rod 322 extends along the axial direction X and is disposed in the guide bearing 321.

[0068] The limiting plate 323 is fixedly connected to the other end of the first piston rod 312 and one end of the guide rod 322 on one side, and the three-grip clamping assembly 2 is fixedly connected to the other side of the limiting plate 323.

[0069] The limiting block 324 is fixedly connected to one end of the guide rod 322 that is away from the limiting plate 323.

[0070] In a specific embodiment, such as Figure 4 As shown, the guide bearing 321 is disposed in the guide hole, and the guide rod 322 is disposed in the guide bearing 321 along the vertical direction, with the lower end of the guide rod 322 fixedly connected to the upper side of the limiting disk 323. Since the lower end of the first piston rod 312 is fixedly connected to the upper side of the limiting disk 323, when the first piston rod 312 extends forward, it can drive the limiting disk 323 to move downward; when the first piston rod 312 retracts, it can drive the limiting disk 323 to move upward. Furthermore, since the upper side of the limiting disk 323 is fixedly connected to the guide rod 322, when the limiting disk 323 moves in the vertical direction, it can drive the guide rod 322 to move in the vertical direction as well.

[0071] Meanwhile, since the upper end of the guide rod 322 is also provided with the limiting block 324, when the guide rod moves downward, the limiting block 324 can limit the extreme position of the guide rod 322 moving downward, and can also limit the extreme position of the limiting disk 323 and the first piston rod 312 moving downward. The structure of the limiting block 324 and the limiting disk 323 is reasonably designed and can limit the guide rod 322 and the first piston rod 312. The guide rod 322 can ensure that the first piston rod 312 moves along the height direction and avoid the first piston rod from deviating radially.

[0072] The position and number of the guide holes and the guide components 32 are not limited. In one specific embodiment, the mounting bracket 1 is provided with two guide holes, one guide hole is provided on one side of the first mounting hole, and the other guide hole is provided on the other side of the first mounting hole;

[0073] The first drive component 3 includes two sets of guide components 32, each of which is disposed in a guide hole.

[0074] In another specific embodiment, the mounting bracket 1 is provided with three guide holes, and the fixing and pressing fixture includes three sets of guide components 32, with any one of the guide components 32 disposed in one of the guide holes.

[0075] This application does not limit the specific configuration of the second drive component 4. In a specific embodiment, the second drive component 4 includes a three-grip chuck cylinder 41, the three-grip chuck cylinder 41 comprising:

[0076] The chuck cylinder body 411 extends along the axial direction X, and one end of the three-grip chuck cylinder 41 is fixedly connected to the other side of the limiting plate 323.

[0077] Three gripping rods 412 are equally spaced along the circumference. Each gripping rod 412 extends radially. One end of each gripping rod 412 is located in the chuck cylinder 411, and the other end is fixedly connected to the end of a clamping rod 21 that is away from the clamping member 22.

[0078] like Figure 4 As shown, the chuck cylinder 411 extends in the vertical direction, the upper end of the chuck cylinder 411 is fixedly connected to the lower side of the limiting disk 323, the inner end of the gripping rod 412 is located in the middle of the chuck cylinder 411, and the outer end is connected to the inner end of the clamping rod 21.

[0079] When the three-grip chuck cylinder 41 is activated, the gripping rod 412 can move radially closer to or further away from the chuck cylinder body 411. Since the outer end of the gripping rod 412 is fixedly connected to the inner end of the clamping rod 21, when the gripping rod 412 moves radially towards the chuck cylinder body 411, it can drive the three clamping rods 21 to move closer to the chuck cylinder body 411, thereby causing the three clamping rods 21 to move closer to each other and release the partition B. When the gripping rod 412 moves radially away from the chuck cylinder body 411, it can drive the three clamping rods 21 away from the chuck cylinder body 411, thereby causing the three clamping rods 21 to move further away from each other and abut against and clamp the partition B. Therefore, activating the chuck cylinder, causing the gripping rod 412 to move radially, can drive the three clamping rods 21 to move radially closer to or further away from each other.

[0080] Furthermore, the fixing and pressing fixture also includes a protective cover 5, which is located at one end of the chuck cylinder 411 opposite to the first drive assembly 3.

[0081] like Figure 4 As shown, the protective cover 5 can ensure that the three clamping rods 21 can move along the same horizontal plane, making the operation of the three-grip clamping assembly 2 more stable and improving the stability of clamping the partition B. In addition, the protective cover 5 can protect the outside of the partition B from welding slag, preventing welding slag from splashing during the welding of the partition B.

[0082] Furthermore, the protective cover 5 is made of brass, which is an alloy composed of copper and zinc. Brass can prevent the weld seam between the protective cover 5 and the partition B from sticking together.

[0083] Furthermore, the fixing and pressing fixture also includes a positioning block 6, which is fixedly connected to the side of the protective cover 5 opposite to the chuck cylinder body 411. The positioning block 6 includes:

[0084] The positioning block body 61 is circular, and the positioning block body 61 is provided with a plurality of clearance holes 61a.

[0085] A plurality of extensions 62 are provided on the outside of the positioning block body 61, and the plurality of extensions 62 are spaced apart along the circumferential direction.

[0086] In a specific embodiment, such as Figure 3 and Figure 5 As shown, when the fixing and pressing fixture is used to install the partition B, the clearance hole 61a on the positioning block body 61 is used to avoid the parts on the partition B, and the extension 62 can be inserted between the parts on the partition B. Thus, the positioning block 6 facilitates rapid positioning and improves the efficiency of the fixing and pressing fixture in clamping the partition B.

[0087] The number and position of the clearance holes 61a and the extensions 62 can be adaptively adjusted according to the number and position of the components on the partition B. In a specific embodiment, the positioning block body 61 is provided with six clearance holes 61a, which are equally spaced along the circumferential direction. The positioning block 6 includes five extensions 62, which are equally spaced along the circumferential direction of the positioning block body 61.

[0088] Furthermore, the positioning block 6 is also provided with several magnets 7, such as... Figure 5 As shown, the magnet 7 is more conducive to fixing the partition B with the fixing and pressing fixture, and prevents the partition B from shifting when the fixing and pressing fixture moves the partition B, which is conducive to moving the partition B to the target position quickly and accurately.

[0089] The number and position of the magnets 7 are not limited. It is understood that the more magnets 7 there are, the more stable the fixing of the inner partition B of the cylinder A and the connection between the press-fitting machine and the partition B will be. In a specific embodiment, the magnets 7 are provided on the positioning block body 61, and on both the inner and outer sides of the clearance hole 61a, and the magnets 7 are also provided on the extension 62.

[0090] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A fixture and press tool characterized by, include: Mounting bracket (1) The three-grip clamping assembly (2) includes three clamping rods (21), which are spaced apart along the circumferential direction. Each clamping rod (21) extends radially and can move radially. The three clamping rods (21) can move closer to or further away from each other. A first drive assembly (3) is disposed on the mounting bracket (1), and the first drive assembly (3) is capable of driving the three-grip clamping assembly (2) to move along the axial direction (X); The second drive assembly (4) is capable of driving the three clamping rods (21) to move closer to or further away from each other.

2. The fixing and pressing fixture as described in claim 1, characterized in that, The three-grip clamping assembly (2) further includes three clamping members (22), each of the clamping members (22) being fixedly connected to one end of a clamping rod (21) away from the other clamping rods (21); Each of the clamping members (22) extends along the axial direction (X) and toward a direction away from the first drive assembly (3); Each of the clamping members (22) has a groove and / or a protrusion on the side opposite to the clamping rod (21).

3. The fixing and pressing fixture as described in claim 1, characterized in that, The mounting bracket (1) is provided with a first mounting hole, which penetrates the mounting bracket (1) along the axial direction (X). The first drive assembly (3) includes a first cylinder (31), the first cylinder (31) comprising: The first cylinder block (311) is fixedly installed in the first mounting hole; The first piston rod (312) extends along the axial direction (X), one end of the first piston rod (312) is disposed in the first cylinder (311), and the other end of the first piston rod (312) is connected to the three-grip clamping assembly (2).

4. The fixing and pressing fixture as described in claim 3, characterized in that, The mounting bracket (1) is also provided with a guide hole, which penetrates the mounting bracket (1) along the axial direction (X). The first driving component (3) further includes a guiding component (32), the guiding component (32) comprising: A guide bearing (321) extends axially (X) and is disposed in the guide hole; A guide rod (322) extends axially (X) and is disposed in the guide bearing (321). The limiting plate (323) is fixedly connected to the other end of the first piston rod (312) and one end of the guide rod (322) on one side, and the three-grip clamping assembly (2) is fixedly connected to the other side of the limiting plate (323). The limiting block (324) is fixedly connected to one end of the guide rod (322) away from the limiting plate (323).

5. The fixing and pressing tooling as described in claim 4, characterized in that, The mounting bracket (1) is provided with two guide holes, one guide hole is located on one side of the first mounting hole, and the other guide hole is located on the other side of the first mounting hole; The first drive component (3) includes two sets of guide components (32), each of which is disposed in a guide hole.

6. The fixing and pressing tooling as described in claim 4, characterized in that, The second drive assembly (4) includes a three-grip chuck cylinder (41), the three-grip chuck cylinder (41) comprising: The chuck cylinder body (411) extends along the axial direction (X), and one end of the three-grip chuck cylinder (41) is fixedly connected to the other side of the limiting plate (323). Three gripping rods (412) are equally spaced along the circumferential direction. Each gripping rod (412) extends radially. One end of each gripping rod (412) is located in the chuck cylinder (411), and the other end is fixedly connected to one end of a clamping rod (21) away from the clamping member (22).

7. The fixing and pressing tooling as described in claim 6, characterized in that, The fixing and pressing fixture also includes a protective cover (5), which is located at one end of the chuck cylinder (411) away from the first drive assembly (3).

8. The fixing and pressing fixture as described in claim 7, characterized in that, The protective cover (5) is made of brass.

9. The fixing and pressing tooling as described in claim 7, characterized in that, The fixing and pressing fixture also includes a positioning block (6), which is fixedly connected to the side of the protective cover (5) away from the chuck cylinder body (411). The positioning block (6) includes: The positioning block body (61) is circular, and the positioning block body (61) is provided with several clearance holes (61a). A plurality of extensions (62) are provided on the outside of the positioning block body (61), and the plurality of extensions (62) are spaced apart along the circumferential direction.

10. The fixing and pressing fixture as described in claim 9, characterized in that, The positioning block (6) is also provided with several magnets (7).

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