CN218363253U - Equipment for bidirectional automatic pre-tightening glue-loosening-preventing screw - Google Patents

Abstract

The utility model provides a device for automatically pre-tightening an anti-loose rubber screw in two directions, which comprises a supporting structure and a positioning mechanism arranged on the supporting structure; the support structure is provided with sliding table air cylinders positioned at two sides of the positioning mechanism and a mounting plate slidably mounted on the sliding table air cylinders, the mounting plate is provided with a positioning assembly for positioning a locking screw, the mounting plate is also provided with a pushing air cylinder and a sliding seat slidably mounted on the pushing air cylinder, and the sliding seat is provided with a clamping structure and a pre-tightening gun mounted on the clamping structure; the air inlet pipeline of the pre-tightening gun is provided with a pressure regulating valve, and the pushing cylinder is provided with an adjustable limiting column for adjusting the moving distance of the sliding seat; the number of rotation turns of the pre-fastened anti-loosening screw can be consistent.

Description

Equipment for bidirectional automatic pre-tightening glue-loosening-preventing screw

Technical Field

The utility model relates to an auto parts equipment field, concretely relates to equipment of two-way automatic pretension anti-loosening rubber screw.

Background

In the process of assembling the automobile seat and the armrest, an iron support needs to be fixedly installed on the armrest and is fixed through an anti-loose rubber screw; when the anti-loose rubber screw is not rotated to the position, but a torque value meeting the qualified requirement is generated, the electric gun can misjudge that the anti-loose rubber screw is rotated to the position, and the situation that the anti-loose rubber screw is not fastened to the position is generated.

In order to improve the misjudgment condition, a Postview function is integrated in the electric gun, the Postview is a torque curve interval, is a curve captured after a large amount of test data, and is input into the electric gun, and the torque curve is seen to be whether the torque curve tends to the inside of the Postview or not when a screw is screwed; if the trend of the curve is consistent with that of the standard curve in the interval, the curve is judged to be qualified, and if the difference between the curve and the standard curve is larger, the curve is judged to be unqualified. In the process of fastening the anti-loose rubber screw, the actual conversion is mainly to monitor the rotation angle or the rotation number of turns of the anti-loose rubber screw driven by the electric gun, and judge whether to rotate to the position or not by judging whether the anti-loose rubber screw meets a curve with the screwing length parameter and the like of the anti-loose rubber screw.

The iron support needs to be screwed into the pre-tightening process of the anti-loosening screws in advance when being fixed on the handrail, and after the number of rotation turns in the pre-tightening process needs to be fixed in a relative standard, the Postview function can be used for judging whether the whole tightening process can meet the preset condition to judge whether the rotation is in place or not in the follow-up electric gun continuing tightening process, so that the number of rotation turns with consistency can be ensured in the pre-tightening screw process.

SUMMERY OF THE UTILITY MODEL

Not enough to exist among the prior art, the utility model provides a two-way automatic pretension prevents that loose gluey screw's equipment has solved the problem that the pretension is fixed to prevent that loose gluey screw in-process can have the number of revolutions of uniformity.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the device for automatically pre-tightening the anti-loosening rubber screw in the two directions comprises a supporting structure and a positioning mechanism arranged on the supporting structure;

the support structure is provided with a sliding table cylinder positioned at two sides of the positioning mechanism and a mounting plate slidably mounted on the sliding table cylinder, the mounting plate is provided with a positioning assembly for positioning a locking screw, the mounting plate is also provided with a pushing cylinder and a sliding seat slidably mounted on the pushing cylinder, and the sliding seat is provided with a clamping structure and a pre-tightening gun mounted on the clamping structure;

and the air inlet pipeline of the pre-tightening gun is provided with a pressure regulating valve, and the pushing cylinder is provided with an adjustable limiting column for regulating the moving distance of the sliding seat.

Preferably, the positioning mechanism comprises two rotating supports which are arranged on the supporting structure at intervals, profiling positioning fixtures are rotatably arranged on the two rotating supports, and a servo motor for rotating the profiling positioning fixtures is arranged on one of the rotating supports;

and clamping fixtures and clamping cylinders for driving the clamping fixtures to act are installed on two sides of the profiling positioning fixture.

Preferably, the positioning assembly comprises two supporting seats which are arranged on the mounting plate at intervals, sliding blocks and positioning blocks which are fixed on the sliding blocks are arranged on the two supporting seats in a sliding manner, profile grooves for placing anti-loosening screws are formed in the positioning blocks, and blocking piece structures for avoiding the anti-loosening screws from withdrawing are further rotatably arranged on the positioning blocks;

the rotating part of the pre-tightening gun can extend into the positioning block to drive the anti-loosening rubber screw to rotate.

Preferably, the clamping structure is including installing fixed block on the sliding seat, install two grip blocks on the fixed block, two set up in opposite directions the centre gripping groove on the grip block, two be equipped with on the grip block and be used for adjusting the centre gripping groove encloses the regulation screw that closes the size.

Preferably, magnetic switches are integrally mounted in the sliding table cylinder and the pushing cylinder, and an induction sensor used for sensing parts is embedded in the clamping fixture.

Preferably, the support structure further comprises a cabinet, and the support structure is fixedly mounted on the cabinet;

the machine cabinet is provided with a space torsion arm positioned on one side of the supporting structure and an electric gun arranged on the space torsion arm.

Preferably, the spatial torsion arm comprises a rotating rod rotatably mounted on the cabinet, a first rotating arm and a second rotating arm rotatably mounted on the first rotating arm are slidably mounted on the rotating rod, and the second rotating arm is fixedly mounted on the electric gun;

the rotating rod is provided with two air pressure valves which are connected with the first rotating arm and are symmetrically arranged;

the device also comprises a guide rod for slidably mounting the first rotating arm.

Preferably, a PLC control cabinet for comprehensive control and a control button connected to the PLC control cabinet are installed on the machine cabinet.

Preferably, a part pre-positioning mechanism positioned on one side of the supporting structure is mounted on the cabinet;

part prepositioning mechanism includes supporting platform and installs preliminary positioning fixture on the supporting platform, the last installation of supporting platform is located the last adjustment cylinder of both sides of preliminary positioning fixture and installs adjustment location structure on the adjustment cylinder.

Preferably, the positioning groove of the preliminary positioning jig is the same as the positioning groove of the copying positioning jig.

Compared with the prior art, the utility model discloses following beneficial effect has:

the mounting plate is driven to move by the sliding table air cylinders which are arranged on the two sides of the positioning mechanism and automatically move, the pre-tightening gun is fastened by the pushing air cylinder, particularly, in the moving process, the rotating speed of the pre-tightening gun is fixed by the pressure regulating valve, and meanwhile, the moving distance of the pre-tightening gun is limited by the adjustable limiting column, so that the pre-tightening number of turns of the pre-tightening gun to the anti-loosening screw is fixed, the air can be cut off after pre-tightening is finished, and the same pre-tightening number of turns is further ensured to be realized during each operation;

meanwhile, the whole pre-tightening process can improve the consistency and reliability of pre-tightening through bidirectional automatic feeding.

Drawings

Fig. 1 is a schematic view of a first view angle structure of an assembly of a positioning mechanism and a pre-tightening mechanism according to an embodiment of the present invention;

fig. 2 is a schematic view of a second view structure of the positioning mechanism and the pre-tightening mechanism according to the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a pre-tightening mechanism in an embodiment of the present invention;

fig. 4 is a schematic structural view of a clamping structure in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an overall apparatus according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a spatial torsion arm according to an embodiment of the present invention;

in the figure, the position of the upper end of the main shaft,

the device comprises a supporting structure 1, a positioning mechanism 2, a rotating support 21, a profiling positioning fixture 22, a servo motor 23, a clamping fixture 24, a clamping cylinder 25, a sliding table cylinder 3, a mounting plate 4, a positioning assembly 5, a support seat 51, a sliding block 52, a positioning block 53, a profiling groove 54, a blocking piece structure 55, a pushing cylinder 6, a sliding seat 7, a clamping structure 8, a fixing block 81, a clamping block 82, a clamping groove 83, an adjusting screw hole 84, a pre-tightening gun 9, an adjustable limiting column 10, a cabinet 11, a space torsion arm 12, a rotating rod 121, a first rotating arm 122, a second rotating arm 123, a pneumatic valve 124, a guide rod 125, an electric gun 13, a PLC control cabinet 14, a control button 15, a part pre-positioning mechanism 16, a supporting platform 161, a primary positioning fixture 162, an adjusting cylinder 163 and an adjusting and positioning structure 164.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

As shown in fig. 1-6, an embodiment of the present invention provides a device for automatically pre-tightening an anti-loosening rubber screw in two directions, which includes a supporting structure 1 and a positioning mechanism 2 installed on the supporting structure 1, wherein the positioning mechanism 2 is used to perform profiling positioning on a handrail product to ensure that the handrail product does not loosen during an assembling process; during specific pre-tightening, the iron support is mainly placed on the handrail, relative positioning is firstly carried out on relative connection between the iron support and the handrail through the pre-tightening anti-loosening screws, so that final tightening can be carried out through the electric gun 13 subsequently, and in order to solve the problem that the electric gun 13 can ensure that the screws rotate to the position depth after the screws are locked, certain consistent fixing needs to be carried out on pre-tightening turns in the pre-tightening process; therefore, a sliding table cylinder 3 positioned at two sides of the positioning mechanism 2 and a mounting plate 4 slidably mounted on the sliding table cylinder 3 are mounted on the supporting structure 1, a positioning assembly 5 for positioning an anti-loosening screw is mounted on the mounting plate 4, a pushing cylinder 6 and a sliding seat 7 slidably mounted on the pushing cylinder 6 are further mounted on the mounting plate 4, and a clamping structure 8 and a pre-tightening gun 9 mounted on the clamping structure 8 are mounted on the sliding seat 7; a pressure regulating valve is arranged on an air inlet pipeline of the pre-tightening gun 9, and an adjustable limiting column 10 for adjusting the moving distance of the sliding seat 7 is arranged on the pushing cylinder 6; firstly, after a mounting plate 4 is pushed to move by a sliding table cylinder 3, a positioning assembly 5 for placing a locking screw can be positioned at the position of an iron support mounting hole, then a pre-tightening gun 9 slides forwards to pre-tighten and rotate the locking screw by pushing a cylinder 6, in order to ensure that the number of turns of rotation at each time is consistent, the input air pressure is ensured to be stable by a pressure regulating valve, the rotating power of the pre-tightening gun 9 is kept consistent, meanwhile, the screwing depth is limited in advance by an adjustable limiting column 10, air supply is stopped and reverse return is started after the pre-tightening gun 9 moves in place, and therefore the consistent pre-tightening depth of each rotation is ensured; in the specific pre-tightening process, the air supply power can be cut off in time, and the condition of accidental sliding is avoided. Specifically, slip table cylinder 3 all adopts slip table and cylinder integration result with push cylinder 6, specifically can adopt cross ball guide, reduces frictional force, improves operating stability.

The number of pre-tightening turns can be determined in the pre-tightening stage, specific number of rotation turns can be monitored in the subsequent pre-tightening process of the electric gun 13, and the comprehensive software algorithm can know whether the whole screw rotates in place, for example, the whole screw is screwed in for 10 turns, the pre-tightening stage rotates for 3 turns, the electric gun 13 is fastened for 7 turns, if the number of turns reaches 7, the electric gun is qualified, and if the number of turns does not reach 7, the electric gun is unqualified.

The pre-tightening stages are all operated through bidirectional transverse action, the angle of a locking position needs to be rotated when the electric gun 13 is fixed, exposure is convenient to operate, the positioning state is not changed, positioning and rotary driving are carried out through the positioning mechanism 2, specifically, the positioning mechanism 2 comprises two rotary supports 21 which are arranged on the supporting structure 1 at intervals, profiling positioning fixtures 22 are rotatably arranged on the two rotary supports 21, and a servo motor 23 for rotating the profiling positioning fixtures 22 is arranged on one rotary support 21; a clamping clamp 24 and a clamping cylinder 25 for driving the clamping clamp 24 to act are arranged on two sides of the profiling positioning clamp 22; the servo motor 23 can drive the profiling positioning clamp 22 to rotate by positive 90 degrees and negative 90 degrees, so that screws on two sides are fastened; and the clamping cylinder 25 and the clamping fixture 24 are used for realizing the fixation of the handrail, thereby ensuring the positioning effect.

Before being driven and fastened by the pre-tightening gun 9, the anti-loose screw needs to be positioned so as to be conveniently installed at a target position, specifically, the positioning assembly 5 comprises two supporting seats 51 installed on the installation plate 4 at intervals, sliding blocks 52 and positioning blocks 53 fixed on the sliding blocks 52 are installed on the two supporting seats 51 in a sliding mode, a profile groove 54 used for placing the anti-loose screw is formed in each positioning block 53, the screws can be placed according to a preset locking state through the profile groove 54, when the pushing cylinder 6 acts, the sliding blocks 52 can be pushed to move to drive the positioning blocks 53 to act, so that the screw position can be moved to the target position firstly, and the rotating part of the pre-tightening gun 9 can extend into the positioning blocks 53 to drive the anti-loose screw to rotate; when the pre-tightening gun 9 is further moved to the right position, the pre-tightening gun can rotate with the screw and is pre-tightened on the handrail; the whole structure moves backwards after the pre-tightening is in place, and the screws which are in place through the pre-tightening can be exposed, specifically, the positioning block 53 is further rotatably provided with a blocking piece structure 55 for avoiding the exit of the anti-loosening rubber screw, and when the screws exit backwards, the two blocking piece structures 55 rotate outwards to enable the screws to exit the positioning block 53.

The pre-tightening gun 9 is fixedly installed through a clamping structure 8, specifically, the clamping structure 8 comprises a fixed block 81 installed on the sliding seat 7, two clamping blocks 82 are installed on the fixed block 81, opposite clamping grooves 83 are formed in the two clamping blocks 82, and adjusting screw holes 84 for adjusting the enclosing size of the clamping grooves 83 are formed in the two clamping blocks 82; the pre-tightening gun 9 is fixed through the two clamping grooves 83, and the size of the enclosing size can be adjusted through the adjusting screw hole 84 to ensure that the pre-tightening gun 9 can be reliably fixed.

In order to facilitate the realization mobility control in pretension operation process, the signal acquisition feedback slip table cylinder 3 with equal integrated installation magnetic switch in the push cylinder 6, the embedded inductive transducer who is used for responding to the part that is equipped with of clamping jig 24 to can detect moving distance, and can put in place through inductive transducer to the iron support and detect, avoid error pretension.

Based on the above embodiment, as shown in fig. 5, the whole device further includes a cabinet 11, the supporting structure 1 is fixedly installed on the cabinet 11, the cabinet 11 is installed with a spatial torsion arm 12 located on one side of the supporting structure 1 and an electric gun 13 installed on the spatial torsion arm 12, after pre-tightening is completed, the fastening position is turned to an operable angle, the electric gun 13 is manually moved to an operable position to realize fastening operation, and the spatial torsion arm 12 is used for limiting the moving angle of the electric gun 13 in advance, so as to ensure that the number of rotation turns obtained in the subsequent fastening process is correct.

As shown in fig. 6, the spatial torsion arm 12 includes a rotating rod 121 rotatably mounted on the cabinet 11, a first rotating arm 122 is slidably mounted on the rotating rod 121, and a second rotating arm 123 rotatably mounted on the first rotating arm 122 is rotatably mounted on the second rotating arm 123, and the electric gun 13 is fixedly mounted on the second rotating arm 123; two symmetrically arranged pneumatic valves 124 connected with the first rotating arm 122 are mounted on the rotating rod 121; a guide rod 125 to which the first rotation arm 122 is slidably mounted; first, the electric gun 13 can rotate at a certain angle relative to the first rotating arm 122 under the drive of the second rotating arm 123, and can move up and down to adjust the position, and adjust the air pressure value through two air pressure valves 124, guarantee to let the electric gun 13 stably operate in the fastening process, and can reset quickly after the operation is finished.

The automation control is comprehensively controlled by the PLC control cabinet 14 in the prior art, and the detailed description of how to control the PLC control cabinet in the prior art is omitted; specifically, a PLC control cabinet 14 for integrated control and a control button 15 connected to the PLC control cabinet 14 are installed on the cabinet 11, and the control button 15 can control actions in a specific corresponding operation process.

Before the handrail is moved to the positioning mechanism 2, the placing state of the handrail can be adjusted and preliminarily positioned, so that the handrail can be conveniently and directly moved to the right position subsequently, and a part pre-positioning mechanism 16 positioned on one side of the supporting structure 1 is arranged on the cabinet 11; part prepositioning mechanism 16 includes supporting platform 161 and installs preliminary positioning fixture 162 on supporting platform 161, install on the supporting platform 161 and be located the adjustment cylinder 163 of both sides and installing on preliminary positioning fixture 162 the adjustment location structure 164 on the adjustment cylinder 163 specifically can adjust the locating position of handrail through adjustment cylinder 163 and preliminary positioning fixture 162 cooperation, is convenient for realize preliminary location, and follow-up can directly snatch the handrail to positioning mechanism 2 on.

Specifically, the positioning groove of the preliminary positioning fixture 162 is the same as the positioning groove of the profiling positioning fixture 22, so that it can be further determined that the preliminary positioning is satisfactory for subsequent direct grasping.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (10)

1. The utility model provides an equipment of two-way automatic pretension anti-loosening rubber screw which characterized in that: comprises a supporting structure (1) and a positioning mechanism (2) arranged on the supporting structure (1);

the support structure (1) is provided with sliding table cylinders (3) positioned on two sides of the positioning mechanism (2) and a mounting plate (4) slidably mounted on the sliding table cylinders (3), the mounting plate (4) is provided with a positioning assembly (5) for positioning a check glue screw, the mounting plate (4) is further provided with a pushing cylinder (6) and a sliding seat (7) slidably mounted on the pushing cylinder (6), and the sliding seat (7) is provided with a clamping structure (8) and a pre-tightening gun (9) mounted on the clamping structure (8);

and the air inlet pipeline of the pre-tightening gun (9) is provided with a pressure regulating valve, and the push cylinder (6) is provided with an adjustable limiting column (10) for regulating the moving distance of the sliding seat (7).

2. The apparatus of claim 1, wherein the apparatus further comprises: the positioning mechanism (2) comprises two rotary supports (21) which are arranged on the supporting structure (1) at intervals, profiling positioning fixtures (22) are rotatably arranged on the two rotary supports (21), and a servo motor (23) for rotating the profiling positioning fixtures (22) is arranged on one rotary support (21);

and clamping clamps (24) and clamping cylinders (25) for driving the clamping clamps (24) to act are arranged on two sides of the profiling positioning clamp (22).

3. The apparatus of claim 1, wherein the apparatus further comprises: the positioning assembly (5) comprises two supporting seats (51) which are arranged on the mounting plate (4) at intervals, sliding blocks (52) and positioning blocks (53) which are fixed on the sliding blocks (52) are arranged on the two supporting seats (51) in a sliding mode, profile grooves (54) used for placing anti-loosening screws are formed in the positioning blocks (53), and blocking piece structures (55) used for avoiding the anti-loosening screws to retreat are further rotatably arranged on the positioning blocks (53);

the rotating part of the pre-tightening gun (9) can extend into the positioning block (53) to drive the anti-loosening glue screw to rotate.

4. The apparatus of claim 1, wherein the apparatus further comprises: clamping structure (8) are including installing fixed block (81) on sliding seat (7), install two grip blocks (82) on fixed block (81), two set up in opposite directions centre gripping groove (83) on grip block (82), two be equipped with on grip block (82) and be used for adjusting regulation screw (84) that centre gripping groove (83) enclose to close the size.

5. The apparatus of claim 2, wherein the apparatus further comprises: magnetic switches are integrally mounted in the sliding table cylinder (3) and the pushing cylinder (6), and an induction sensor for sensing parts is embedded in the clamping fixture (24).

6. The apparatus of claim 5, wherein the apparatus further comprises: the supporting structure comprises a supporting structure (1) and is characterized by further comprising a cabinet (11), wherein the supporting structure (1) is fixedly arranged on the cabinet (11);

and a space torsion arm (12) positioned on one side of the supporting structure (1) and an electric gun (13) arranged on the space torsion arm (12) are arranged on the machine cabinet (11).

7. The apparatus of claim 6, wherein the apparatus further comprises: the spatial torsion arm (12) comprises a rotating rod (121) rotatably mounted on the cabinet (11), a first rotating arm (122) and a second rotating arm (123) rotatably mounted on the first rotating arm (122) are slidably mounted on the rotating rod (121), and the electric gun (13) is fixedly mounted on the second rotating arm (123);

two symmetrically arranged pneumatic valves (124) connected with the first rotating arm (122) are mounted on the rotating rod (121);

and a guide rod (125) for slidably mounting the first rotating arm (122).

8. The apparatus of claim 7, wherein the apparatus further comprises: and a PLC control cabinet (14) for comprehensive control and a control button (15) connected to the PLC control cabinet (14) are installed on the cabinet (11).

9. The apparatus of claim 7, wherein the apparatus further comprises: a part pre-positioning mechanism (16) positioned on one side of the supporting structure (1) is arranged on the cabinet (11);

part pre-positioning mechanism (16) includes supporting platform (161) and installs preliminary positioning fixture (162) on supporting platform (161), install on supporting platform (161) and be located adjustment cylinder (163) and the installation of both sides are gone up in preliminary positioning fixture (162) adjustment location structure (164) on adjustment cylinder (163).

10. The device for automatically pre-tightening the anti-loosening screw in the two directions according to claim 9, wherein: the positioning groove of the preliminary positioning jig (162) is the same as the positioning groove of the copying positioning jig (22).

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