CN214558822U - Automatic centering mechanism for grabbing square screws - Google Patents

Abstract

The utility model provides a square screw grabbing automatic centering mechanism, which comprises a fixed plate, guide pillars, a floating plate, a sliding sleeve, aligning grooves and an aligning mechanism, wherein the guide pillars are arranged at the left end and the right end below the fixed plate, the floating plate is arranged below the fixed plate, the floating plate is slidably arranged on the guide pillars through the sliding sleeve, the aligning mechanism is arranged at the left end and the right end of the lower surface of the fixed plate, the aligning grooves corresponding to the aligning mechanism are arranged at the left end and the right end of the upper surface of the floating plate, the aligning groove is a V-shaped groove, the clamping grooves are symmetrically arranged on the inclined plane of the aligning groove, the floating plate is primarily aligned and finally aligned through the matching of the aligning mechanism and the aligning groove, the problem of positioning position deviation caused by the deviation of the precision of the mechanical arm and the matching degree of a sliding sleeve on the floating plate and a guide pillar is prevented, the vacuum suction mechanism below the floating plate can be well aligned with the square screw positioned below the floating plate, and the alignment precision in the screw suction operation is improved.

Description

Automatic centering mechanism for grabbing square screws

Technical Field

The utility model relates to a screw equipment field especially relates to a square screw snatchs automatic centering mechanism.

Background

The automatic assembling method comprises the steps of automatically assembling an existing screw and a workpiece, wherein the automatic assembling step of the square screw comprises the positioning of the square screw, the suction of the square screw and the assembling of the square screw, in the suction step of the square screw, a screw suction mechanism is moved to the position above the square screw through a mechanical arm, and then the square screw is sucked through a vacuum suction mechanism so as to be assembled on the next step.

The existing screw suction mechanism comprises a fixed plate, an air cylinder, a guide pillar, a floating plate and a vacuum suction mechanism, wherein the air cylinder is arranged on the fixed plate, the guide pillar is arranged at the bottom of the fixed plate, the floating plate is arranged on the guide pillar in a sliding manner through a sliding sleeve, the vacuum suction mechanism is arranged at the bottom of the floating plate, a piston rod of the air cylinder penetrates through the fixed plate and is connected with the floating plate, the floating plate is driven by the air cylinder to move downwards along the guide pillar in the square screw assembly step to convey a square screw to a workpiece to be assembled, the air cylinder drives the floating plate to retract upwards along the guide pillar to the lower part of the fixed plate after the assembly is finished, the next square screw suction operation is continued, however, the existing mechanical arm is insufficient in positioning precision, the screw suction mechanism is prone to have deviation due to the matching degree of the sliding sleeve on the floating plate and the guide pillar for a long time, and the situation of inaccurate positioning is easy to occur, and in the screw suction step, the vacuum suction mechanism below the floating plate cannot be well aligned with the square screw positioned well, affecting the sucking operation of the square screw.

Disclosure of Invention

According to the technical problem, the utility model provides a square screw snatchs automatic centering mechanism which is characterized in that includes fixed plate, guide pillar, float board, sliding sleeve, alignment groove and alignment mechanism, the fixed plate passes through the connecting rod and is connected with the upper arm, the fixed plate is provided with the guide pillar in both ends about the below, the float board sets up in the fixed plate below, the float board is provided with the sliding sleeve in both ends about, the float board is slidably mounted on the guide pillar through the sliding sleeve, the fixed plate lower surface is provided with the alignment mechanism in both ends about, the float board upper surface is provided with the alignment groove that corresponds with the alignment mechanism in both ends about;

the aligning groove is a V-shaped groove, the joint of the left end and the right end of the aligning groove and the upper surface of the floating plate is of a fillet transition structure, and clamping grooves are symmetrically arranged on the inclined plane of the aligning groove;

the mechanism adjusts well includes installation piece, slide bar, card pearl and spring, the installation piece sets up in deciding the board bottom, the installation piece is with deciding the board structure as an organic whole, the spout has been seted up to the symmetry in the installation piece, the slide bar is installed to installation piece left and right sides symmetry, the slide bar sets up for the slope outwards, slide bar slidable mounting is in the spout, be provided with the spring in the spout, spring one end supports at the spout inner wall, the spring other end supports on the slide bar, the slide bar outer end is provided with the card pearl.

The utility model has the advantages that:

the utility model is provided with the aligning groove and the aligning mechanism, when the air cylinder drives the floating plate to ascend along the guide post after the assembly is finished, the floating plate ascends to ensure that the aligning groove ascends, the aligning groove contacts the slide bar and the clamping bead of the aligning mechanism in the process of putting on the body, the clamping bead is supported on the two inclined planes of the aligning groove, and along with the ascending of the floating plate, the clamping column and the slide bar are extruded to the inner side by the two inclined planes of the V-shaped aligning groove, so that the slide bar moves to the inner side in the chute and the spring is compressed, the aligning groove ascends gradually, because the forces generated by the extrusion of the springs on the slide bars at the two sides are the same, the slide bar and the inclined planes of the aligning groove act together to centralize the floating plate and conduct primary alignment, along with the continuous ascending of the floating plate, the aligning groove continuously extrudes the slide bar to the inner side of the chute, until the clamping bead reaches the clamping groove, the slide bar and the clamping bead pop out under the action of the spring, so that the clamping bead is clamped into the clamping groove, finally adjust floating plate well, this kind of structure is through adjusting mechanism well with adjusting the groove cooperation well with floating plate is elementary right and finally adjust floating plate well, prevents because the locating position skew problem that the deviation leads to appears in sliding sleeve and the guide pillar cooperation degree on arm precision and the floating plate for the vacuum mechanism of floating plate below can adjust well with the good side screw in below location, increases the screw and absorbs the precision of adjusting well in the operation.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view of the front view of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2.

As shown in the figure: 1-fixed plate, 2-guide post, 3-floating plate, 4-sliding sleeve, 5-alignment groove, 6-clamping groove, 7-mounting block, 8-sliding rod, 9-clamping bead, 10-spring, 11-sliding groove, 12-vacuum-absorbing mechanism, 13-air cylinder and 14-mechanical arm.

Detailed Description

Example 1

The utility model provides a square screw snatchs automatic centering mechanism, its characterized in that includes fixed plate 1, guide pillar 2, floating plate 3, sliding sleeve 4, alignment groove 5 and alignment mechanism, fixed plate 1 is connected with upper arm 14 through the connecting rod, fixed plate 1 is provided with guide pillar 2 in both ends about the below, floating plate 3 sets up in fixed plate 1 below, floating plate 3 is provided with sliding sleeve 4 in both ends about, floating plate 3 is slidably mounted on guide pillar 2 through sliding sleeve 4, fixed plate 1 lower surface is provided with alignment mechanism in both ends about, floating plate 3 upper surface is provided with alignment groove 5 corresponding to alignment mechanism in both ends about;

the alignment groove 5 is a V-shaped groove, the joint of the left end and the right end of the alignment groove 5 and the upper surface of the floating plate 3 is of a fillet transition structure, and clamping grooves 6 are symmetrically arranged on the inclined surface of the alignment groove 5;

mechanism is adjusted well including installation piece 7, slide bar 8, card pearl 9 and spring 10, installation piece 7 sets up in deciding board 1 bottom, installation piece 7 with decide board 1 structure as an organic whole, spout 11 has been seted up to the symmetry in the installation piece 7, slide bar 8 is installed to 7 left and right sides symmetries of installation piece, slide bar 8 sets up for the tilt outwards, slide bar 8 slidable mounting is in spout 11, be provided with spring 10 in the spout 11, spring 10 one end supports at spout 11 inner wall, the spring 10 other end supports on slide bar 8, slide bar 8 outer end is provided with card pearl 9.

Example 2

The utility model discloses fixed plate 1 top is provided with cylinder 13, and the piston rod of cylinder 13 passes fixed plate 1 and is connected with floating plate 3, floating plate 3 bottom installs vacuum suction mechanism 12, when using the utility model, after the screw equipment, when the piston rod of cylinder 13 drove floating plate 3 upwards to withdraw along guide pillar 2, aligning groove 5 on floating plate 3 contacted with aligning mechanism, aligning mechanism's card pearl 9 supported on the inclined plane of aligning groove 5, then floating plate 3 continued to rise, aligning groove 5 inclined plane with slide bar 8 and card pearl 9 to spout 11 inboard extrusion and spring 10 compressed, because spring 10 of both sides receive with the same degree when extrudeing reverse thrust the same, so if floating plate 3 align groove 5 when in the state of misalignment, slide bar 8 and card pearl 9 of both sides can be through supporting and will align groove 5 and floating plate 3 to aligning state one side promotion with floating plate 3 and right groove 5 to one side, until the consistent spring 10 atress in the both sides slide bar 8 is tentatively right promptly, then floating plate 3 continues to rise, slide bar 8 continues to move extrusion spring 10 to spout 11 inboard, when card pearl 9 reachs the draw-in groove 6 position of alignment groove 5, promote slide bar 8 along spout 11 outside removal and card pearl 9 card in draw-in groove 6 under the effect of the restoring force of spring 10, accomplish the location of floating plate 3 and adjust well, later can carry out the screw and absorb the step, make the vacuum mechanism 12 of floating plate 3 below can adjust well with the screw.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The utility model discloses each part that mentions is the common technique in prior art, and the technical personnel of this trade should understand, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the principle of the utility model, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection of claim the utility model is within the scope. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (3)

1. The automatic centering mechanism for grabbing the square screw is characterized by comprising a fixed plate, guide pillars, a floating plate, sliding sleeves, centering grooves and a centering mechanism, wherein the fixed plate is connected with an upper mechanical arm through a connecting rod;

the alignment groove is a V-shaped groove, and clamping grooves are symmetrically arranged on the inclined surface of the alignment groove;

the mechanism is adjusted well including installation piece, slide bar, card pearl and spring, the installation piece sets up in deciding the board bottom, the spout has been seted up to the symmetry in the installation piece, the slide bar is installed to installation piece left and right sides symmetry, the slide bar sets up for the slope outwards, slide bar slidable mounting is in the spout, be provided with the spring in the spout, spring one end is supported at the spout inner wall, the spring other end supports on the slide bar, the slide bar outer end is provided with the card pearl.

2. The square screw grabbing automatic centering mechanism according to claim 1, wherein the connection between the left end and the right end of the aligning groove and the upper surface of the floating plate is a round-corner transition structure.

3. The square screw grabbing automatic centering mechanism according to claim 1, wherein the mounting block and the fixed plate are of an integral structure.

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