Press riveting tool capable of automatically aligning workpiece

Abstract

The utility model belongs to the technical field of press riveting tools, and discloses a press riveting tool capable of automatically aligning a workpiece, which comprises a press knife assembly and a pressure-bearing seat, the pressure-bearing seat comprises a bottom plate and four shaping blocks, a fixed support is fixedly mounted in the center of the top of the bottom plate, an inverted conical groove is formed in the center of the top of the fixed support, and the shaping blocks are arranged in the inverted conical groove. According to the utility model, through the structural arrangement that the inverted-cone-shaped groove is large in upper part and small in lower part, the four shaping blocks are connected and attached more tightly when the pressure is larger, and the stress is uniform and the positions are uniform and concentric; therefore, the yoke is prevented from being locally deformed and deviated in the pressing process, the quality of finished products is effectively improved, the requirement that the product size assembling precision reaches the standard is met, the consistency of the quality of assembly line products is facilitated, and after pressing riveting is completed, reset operation is conducted on the yoke through a reset spring at the bottom of the shaping block, and preparation is made for the next pressing riveting work in sequence.

Description

TECHNICAL FIELD

[0001] The utility model relates to a press riveting tool technical field, concretely relates to a kind of automatic alignment workpiece's press riveting tool. BACKGROUND

[0002] In the production process of electromagnetic valve, the yoke and cover plate of electromagnetic valve need to be pressed riveting by pneumatic press, and in the production process, due to the misalignment of valve body, the product is deformed unqualified, and the valve body needs to be placed repeatedly after alignment to be pressed, so as to cause very low production efficiency, and the alignment is completed manually by artificial, which greatly reduces the qualification rate of pressure connection and the safety of operation, and the positioning alignment tool is operated complicatedly and needs to use a variety of tools, needs to spend a lot of time to debug and produce preparation work, further reduces production efficiency. UTILITARY MODEL

[0003] The utility model aims at providing a kind of automatic alignment workpiece's press riveting tool, to solve the above-mentioned technical problems existing in prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A kind of automatic alignment workpiece's press riveting tool, including press cutter assembly and pressure bearing seat, the pressure bearing seat includes bottom plate and four shaping blocks, the top center of the bottom plate is fixedly installed with fixed support, the top center of the fixed support is provided with inverted taper slot, four the shaping blocks form fixed clamping seat, the shape of the fixed clamping seat is matched with the shape of the inverted taper slot and is slidably connected inside it, the top of the fixed support is fixedly installed with ring cover plate, the ring cover plate limits the fixed clamping seat from the top of the fixed support to separate, the side of the shaping block close to the center axis of the inverted taper slot is provided with groove, the shape of four the groove is matched with the shape of workpiece to be processed, reset spring is fixedly connected between the bottom of the shaping block and the top of the bottom plate, the press cutter assembly is fixedly installed at the output end of pneumatic riveting press, and is directly above the pressure bearing seat, the workpiece to be processed is placed in the space formed by four the groove.

[0006] In a preferred embodiment of the utility model, the side of the shaping block away from the inverted taper slot is provided with limiting long hole along vertical direction, the fixed support is provided with positioning screw hole around and corresponding each limiting long hole, the limiting long hole is threadedly connected with limiting bolt, the limiting bolt is inserted into the limiting long hole, and the shaping block is slid up and down along the inner wall of the inverted taper slot by cooperating with the limiting long hole and the limiting bolt.

[0007] In a preferred embodiment of the utility model, the knife fixed seat's middle part is equipped with the knife rest groove, the four around of pressure knife rest evenly set up at least two blade, the pressure knife rest with at least two the blade interference fit installation in the pressure knife rest groove inside, the top of pressure knife rest is fixedly installed with the handle top plate, the top central of handle top plate is fixedly installed with the handle head, the handle head with the output of pneumatic riveting press is fixedly installed.

[0008] In a preferred embodiment of the utility model, the middle part of the pressure knife rest is provided with a pre-pressing groove, a pre-pressing block is vertically slidably connected inside the pre-pressing groove, and a circular through hole is formed in the middle part of the pre-pressing block.

[0009] In a preferred embodiment of the utility model, a limiting step is arranged around the inner wall of the pre-pressing groove and close to the bottom, the top of the pre-pressing block is in T-head structure, and the T-head structure of the pre-pressing block is interference-fitted with the limiting step.

[0010] In a preferred embodiment of the utility model, mounting grooves are formed around the pressure knife rest, and the blades are mounted inside the mounting grooves.

[0011] The utility model discloses the beneficial effect is:

[0012] 1, the utility model discloses the structure of big upper small lower of inverted conical groove is set up, and the four shaping blocks are connected more closely under the greater pressure, and the stress is evenly distributed in the concentric position, thereby preventing the local deformation and deviation of yoke iron during the pressing process, thereby effectively improving the product quality, meeting the product size assembly precision standard, helping the consistency of assembly line product quality, when riveting is completed, resetting operation is carried out to it through the resetting spring at the bottom of shaping block, and the next riveting work is prepared in turn.

[0013] 2, the utility model discloses the installation groove and the cooperation of various structures are set up on the pressure knife rest, thereby facilitating the quick disassembly and flexible configuration of blade, thereby effectively reducing the time of debugging the tooling, thereby effectively improving the working performance of the tooling, facilitating maintenance or replacement of parts. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model;

[0015] Figure 2 It is the three-dimensional explosion structure schematic diagram of the utility model;

[0016] Figure 3 It is the full section plane structure schematic diagram of the utility model;

[0017] Figure 4This is a three-dimensional exploded structural diagram of the pressure bearing seat;

[0018] Figure 5 This is a three-dimensional exploded view of the pressure knife assembly.

[0019] Reference numerals are provided in the attached figures; where: 100, tool clamping assembly; 101, tool holder head; 102, tool holder top plate; 103, tool fixing seat; 10301, tool holder groove; 104, pre-pressing block; 105, tool clamping holder; 10501, mounting groove; 10502, pre-pressing groove; 106, cutting blade; 200, pressure bearing seat; 201, ring cover plate; 202, fixed support; 20201, inverted conical groove; 20202, positioning screw hole; 203, shaping block; 20301, groove body; 20302, limiting elongated hole; 204, return spring; 205, base plate; 300, workpiece to be processed. Detailed Implementation

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0021] Example:

[0022] like Figures 1-5 As shown, this embodiment provides an automatic workpiece alignment riveting fixture, including a pressure tool assembly 100 and a pressure seat 200. The pressure seat 200 includes a base plate 205 and four shaping blocks 203. A fixed support 202 is fixedly installed at the top center of the base plate 205. An inverted conical groove 20201 is formed at the top center of the fixed support 202. The four shaping blocks 203 form a fixed clamping seat. The shape of the fixed clamping seat matches the shape of the inverted conical groove 20201 and is slidably connected inside it. A ring cover plate 201 is fixedly installed on the top of the fixed support 202. The ring cover plate 201 restricts the fixed clamp from detaching from the top of the fixed support 202. The shaping block 203 has a groove 20301 on one side near the central axis of the inverted conical groove 20201. The shape of the four grooves 20301 matches the shape of the workpiece 300 to be processed. A return spring 204 is fixedly connected between the bottom of the shaping block 203 and the top of the base plate 205. The pressure knife assembly 100 is fixedly installed at the output end of the pneumatic riveting press and is located directly above the pressure seat 200. The workpiece 300 to be processed is placed in the space formed by the four grooves 20301.

[0023] Specifically, such as Figures 1-4As shown, the tool is composed of a fixed clamp base formed by arranging four shaping blocks 203 in the inverted conical groove 20201 of the fixed support 202, by placing the electromagnetic valve yoke to be riveted and pressed and the cover plate between the four groove bodies 20301, by pressing the workpiece with the pressing knife assembly 100, so that the four shaping blocks 203 are simultaneously pressed and slide along the inclined surface of the inverted conical groove 20201 and approach each other and tightly hold the yoke from all around. Through the structure of large at the top and small at the bottom of the inverted conical groove 20201, the greater the pressure, the tighter the connection and fitting of the four shaping blocks 203, and the force is evenly distributed and the position is uniformly concentric, so that the local deformation and deviation of the yoke during the pressing process is prevented, thereby effectively improving the product quality, meeting the product size assembly precision standard, and helping the consistency of the product quality of the assembly line. When the riveting is completed, the resetting spring 204 at the bottom of the shaping block 203 is used for resetting operation, and the next riveting work is prepared in turn.

[0024] In a preferred embodiment of the utility model, further, a limiting long hole 20302 is vertically formed on the side of the shaping block 203 away from the inverted conical groove 20201, a positioning screw hole 20202 is formed around the fixed support 202 and corresponds to each limiting long hole 20302, a limiting bolt is threadedly connected in the positioning screw hole 20202, the limiting bolt is inserted into the limiting long hole 20302, and the shaping block 203 slides up and down along the inner wall of the inverted conical groove 20201 in the vertical direction by cooperating with the limiting long hole 20302 and the limiting bolt.

[0025] Specifically, as shown in the figure, Figures 3-4 In order to prevent the four shaping blocks 203 from deviating in position due to frequent vibration in the inverted conical groove 20201, a limiting long hole 20302 is vertically formed on the back of the shaping block 203, a positioning screw hole 20202 is formed around the fixed support 202 and corresponds to each limiting long hole 20302, a limiting bolt is screwed in the positioning screw hole 20202 and inserted into the limiting long hole 20302, so as to limit the rotation of the shaping block 203 in the horizontal direction, and the shaping block 203 can only slide up and down along the inclined surface of the inverted conical groove 20201 by cooperating the limiting long hole 20302 with the limiting bolt, so as to further improve the size accuracy of the workpiece during the riveting process and effectively prevent deformation of the product.

[0026] In a preferred embodiment of the utility model, further, the knife fixing seat 103 is internally provided with a knife holder groove 10301, the periphery of the pressing knife holder 105 is uniformly provided with at least two knife blades 106, the pressing knife holder 105 and the at least two knife blades 106 are installed in the knife holder groove 10301 in interference fit, the top of the pressing knife holder 105 is fixedly installed with a knife handle top plate 102, the top center of the knife handle top plate 102 is fixedly installed with a knife handle head 101, and the knife handle head 101 is fixedly installed with the output end of the pneumatic riveting press.

[0027] In a preferred embodiment of the utility model, further, the middle part of the pressing knife holder 105 is provided with a pre-pressing groove 10502, and the inside of the pre-pressing groove 10502 is vertically slidably connected with a pre-pressing block 104, and the middle part of the pre-pressing block 104 is provided with a circular through hole.

[0028] In a preferred embodiment of the utility model, further, the periphery of the inner wall of the pre-pressing groove 10502 is provided with a limiting step close to the bottom, the top of the pre-pressing block 104 is in T-head structure, and the T-head structure of the pre-pressing block 104 is in interference fit with the limiting step.

[0029] In a preferred embodiment of the utility model, further, the periphery of the pressing knife holder 105 is provided with an installation groove 10501, and the knife blade 106 is installed in the inside of the installation groove 10501.

[0030] Specifically, as shown in Figures 1-3 , 5, the installation groove 10501 is arranged on the four sides of the pressing knife holder 105, the installation groove 10501 can be set according to the shape of the electromagnetic valve, the knife blade 106 is put into the installation groove 10501, the pressing knife holder 105 and the knife blade 106 are installed in the knife holder groove 10301 of the knife fixing seat 103, the pressing knife holder 105 and the knife blade 106 are fixedly installed through interference fit, the edge of the yoke top is deformed through the two sharp ends of the bottom of the knife blade 106, the cover plate is clamped, riveting connection is realized, the pre-pressing block 104 is arranged in the pre-pressing groove 10502 of the middle part of the pressing knife holder 105, the cover plate of the electromagnetic valve is pre-pressed through the gravity of the pre-pressing block 104, and the cover plate is prevented from falling due to vibration to cause defective products.

[0031] The installation groove 10501 is arranged on the pressing knife holder 105, and the structures are matched, so that the knife blade 106 is conveniently and quickly disassembled and assembled, and is flexibly configured, the time for debugging the tooling is effectively reduced, the working performance of the tooling is effectively improved, and the tooling is conveniently maintained or replaced with parts.

[0032] Therefore, this tooling improves the product qualification rate in terms of overall structure and prevents the product from failing the stop bar crimping due to misalignment of the tie rod during riveting. The modular design of this tooling enables quick tooling replacement and shortens the tooling adjustment time. It is convenient and safe for employees to operate and can automatically align and position during the riveting process.

[0033] The assembly process of this stop bar riveting fixture is as follows:

[0034] The tool holder head 101, tool holder top plate 102, tool holder 105, tool fixing seat 103, pre-pressing block 104, blade 106, and screws are assembled into a tool pressing assembly 100 by bolt fastening.

[0035] The ring cover plate 201, four shaping blocks 203, return spring 204, fixed support 202, base plate 205, and screws are assembled into a pressure seat 200 by bolt fastening.

[0036] The riveting principle of this tooling:

[0037] The workpiece is as follows Figure 1 The workpiece is placed in this fixture, and its relative position is ensured by the shape of the workpiece and the limiting block. Then, the pneumatic riveting press is activated, and the riveting knife is used to rivet the workpiece.

[0038] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A press-riveting tool for automatically aligning a workpiece, characterized by comprising: The utility model provides a kind of pressure cutter assembly (100) and pressure seat (200), the pressure seat (200) includes bottom plate (205) and four shaping blocks (203), the top center of the bottom plate (205) is fixedly installed with fixed support (202), the top center of the fixed support (202) is opened with inverted taper slot (20201), four the shaping blocks (203) form fixed clamping seat, the shape of the fixed clamping seat is consistent with the shape of the inverted taper slot (20201) and is slidably connected inside it, the top of the fixed support (202) is fixedly installed with ring cover plate (201), the ring cover plate (201) limits the fixed clamping seat from the top of the fixed support (202) to separate, the side of the shaping block (203) close to the center axis of the inverted taper slot (20201) is opened with groove (20301), the shape of four the groove (20301) is matched with the shape of workpiece (300), the bottom of the shaping block (203) and the top of the bottom plate (205) are fixedly connected with return spring (204), the pressure cutter assembly (100) is fixedly installed on the output end of pneumatic riveting press, and is just above the pressure seat (200), the workpiece (300) is placed in the space formed by four the groove (20301).

2. The press-riveting tool for automatically positioning a workpiece according to claim 1, wherein The side of the shaping block (203) away from the inverted taper slot (20201) is opened with limiting long hole (20302) along vertical direction, the fixed support (202) is opened with positioning screw hole (20202) around and corresponding each limiting long hole (20302), the limiting long hole (20302) is inserted into the limiting long hole (20302) in the limiting long hole (20302), the shaping block (203) is slid up and down along the inner wall of the inverted taper slot (20201) by cooperating with the limiting long hole (20302) and the limiting bolt.

3. The press-riveting tool for automatically positioning a workpiece according to claim 1, wherein The pressure cutter assembly (100) includes knife fixed seat (103) and pressure cutter frame (105), the middle part of the knife fixed seat (103) is opened with cutter frame groove (10301), the periphery of the pressure cutter frame (105) is evenly provided with at least two blades (106), the pressure cutter frame (105) and at least two the blade (106) is mounted in the cutter frame groove (10301) by interference fit, the top of the pressure cutter frame (105) is fixedly installed with knife handle top plate (102), the top center of the knife handle top plate (102) is fixedly installed with knife handle head (101), the knife handle head (101) is fixedly installed with the output end of the pneumatic riveting press.

4. The press-in-place riveting tool of claim 3, wherein, The middle part of the pressure cutter frame (105) is opened with pre-pressing groove (10502), the pre-pressing groove (10502) is slidably connected with pre-pressing block (104) along vertical direction inside, the middle part of the pre-pressing block (104) is opened with circular through hole.

5. The press-in-place riveting tool of claim 4, wherein, The inner wall of the pre-pressing groove (10502) is provided with a limiting step near the bottom, and the top of the pre-pressing block (104) is in a T-head structure, and the T-head structure of the pre-pressing block (104) is in interference fit with the limiting step.

6. The press-in-place riveting tool of claim 5, wherein, The periphery of the press knife holder (105) is provided with a mounting groove (10501), and the blade (106) is mounted in the mounting groove (10501).

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