Positioning and clamping device and method for mounting a sofa iron frame

Abstract

The application relates to the field of sofa processing technology, in particular to a positioning and clamping device and method for sofa iron frame installation. The device comprises a supporting frame, the supporting frame is rotationally connected with a rotating frame, the rotating frame is detachably connected with a bottom frame, the bottom frame is detachably connected with two side frames, a plurality of connecting nails are arranged between the bottom frame and the side frames, the supporting frame is slidably connected with symmetrically-distributed sliding plates, the sliding plates are provided with symmetrically-distributed electric control push rods, the telescopic parts of the symmetrically-distributed electric control push rods are fixedly connected with a first moving frame, the first moving frame is slidably connected with a second moving frame, and the second moving frame is provided with a plurality of extrusion frames. The connecting nails are moved by extrusion of the extrusion frames, the connecting nails are separated from the bottom frame, the two side frames after positioning can be kept open vertically, when the connecting rods are installed, the probability of the inclination deformation of the connecting nails is reduced, the connecting strength of the connecting nails after the sofa iron frame installation is guaranteed, and the quality of the sofa iron frame is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sofa processing technology, and particularly relates to a positioning and clamping device and method for sofa iron frame installation. BACKGROUND

[0002] As common furniture, the stability and installation precision of the internal iron frame structure of a sofa directly determine the overall quality and service life of the sofa. A common sofa iron frame is usually composed of a bottom frame, two side frames and connecting rods connecting the two side frames. In the existing sofa iron frame installation process, an operator usually preliminarily fixes the side frames on the bottom frame by connecting nails to position the two side frames so as to install the connecting rods between the two side frames. However, when the connecting rods are inserted between the two side frames, the distance between each part of the two side frames is not fixed due to the uneven surfaces of the two side frames. In order to insert the connecting rods between the two side frames and prevent the connecting rods from being installed obliquely, the upper part of the preliminarily fixed side frame needs to be slightly opened outward, which will cause the connecting nails to be bent and deformed or even broken, seriously affecting the connecting strength of the connecting part of the sofa iron frame and thus affecting the quality of the sofa after production. SUMMARY

[0003] In order to overcome the shortcomings in the background art, the present application provides a positioning and clamping device and method for sofa iron frame installation.

[0004] The technical scheme is as follows: A positioning and clamping device for sofa iron frame installation comprises a support frame, the support frame is rotationally connected with a rotating frame, the rotating frame is detachably connected with a bottom frame, the bottom frame is detachably connected with two side frames, a plurality of connecting nails are installed between the bottom frame and the side frames, the support frame is slidably connected with symmetrically distributed sliding plates, the sliding plates are installed with symmetrically distributed electric control push rods, the extension parts of the symmetrically distributed electric control push rods are fixedly connected with a first moving frame, the first moving frame is fixedly connected with elastic strips, the first moving frame is slidably connected with a second moving frame fixedly connected with adjacent elastic strips, the second moving frame is provided with a plurality of pressing frames for pressing the corresponding connecting nails, the sliding plates are provided with symmetrically distributed stop blocks for limiting the adjacent second moving frames, and the second moving frame is provided with symmetrically distributed positioning and clamping assemblies for jointly adjusting the positions of the side frames.

[0005] Preferably, the support frame is installed with a motor, the output shaft of the motor is fixedly connected with a first lead screw, and the symmetrically distributed sliding plates are threadedly connected with the first lead screw.

[0006] As preferred, the positioning and clamping assembly comprises a first rack fixedly connected to the first moving frame, a gear rotatably connected to the second moving frame and engaged with the first rack, a second rack slidably connected to the second moving frame and engaged with the gear, a connecting rod fixedly connected to the second rack, a first lower clamping plate fixedly connected to the connecting rod, a second lower clamping plate slidably connected to the first lower clamping plate, a first elastic member fixedly connected between the first lower clamping plate and the second lower clamping plate, a first upper clamping plate slidably connected to the first lower clamping plate, a second upper clamping plate slidably connected to the first upper clamping plate, a second elastic member fixedly connected between the first upper clamping plate and the second upper clamping plate, a baffle fixedly connected to the second moving frame, and an elastic plate fixedly connected to the baffle and used for limiting the second lower clamping plate and the second upper clamping plate.

[0007] As preferred, the opposite sides of the first upper clamping plate and the second upper clamping plate are fixedly connected with elastic blocks.

[0008] As preferred, the elastic coefficient of the elastic plate is greater than the elastic coefficients of the first elastic member and the second elastic member.

[0009] As preferred, the connecting rod is threadedly connected with a rotating rod, and the first upper clamping plate is rotatably connected with the rotating rod.

[0010] As preferred, the stopper is provided with an inclined surface which gradually inclines downward from the position close to the first moving frame to the position away from the first moving frame.

[0011] As preferred, the stopper is slidably connected with the sliding plate, and the stopper is threadedly connected with a second lead screw, and a rotating cylinder is slidably connected between the two second lead screws.

[0012] As preferred, the extrusion frame is slidably connected with the second moving frame, and used for adjusting the position of the extrusion frame.

[0013] A positioning and clamping method for sofa iron frame installation based on the positioning and clamping device for sofa iron frame installation, and the specific steps are as follows:

[0014] Step 1: Start the motor, and the output shaft of the motor drives the first lead screw to rotate, so that the symmetrically distributed sliding plates move towards or away from each other to change the distance between the symmetrically distributed sliding plates;

[0015] Step 2: Rotate the rotating rod, the rotating rod drives the adjacent first upper clamping plate to move, and the first upper clamping plate drives the adjacent second upper clamping plate to move, so as to adjust the height position of the first upper clamping plate and the adjacent second upper clamping plate;

[0016] Step 3: sliding the extrusion frame, aligning the extrusion frame with the positions of the corresponding connecting nails on the chassis of different models;

[0017] Step 4: rotating the rotating cylinder, the corresponding second lead screw drives the adjacent blocking block to move, adjusting the initial vertical distance between the blocking block and the adjacent second moving frame;

[0018] Step 5: positioning the chassis, a plurality of connecting nails and two side frames, turning on all the electric control push rods, the telescopic part of the electric control push rod drives the extrusion frame to move through the first moving frame, the elastic strip and the second moving frame, and the extrusion frame extrudes the corresponding connecting nail to move away from the chassis;

[0019] Step 6: after the extrusion frame ejects the connecting nail from the chassis, the first moving frame continues to move and drives the corresponding first lower clamping plate to move, the first lower clamping plate drives the corresponding first upper clamping plate to move, and the four corners of the two side frames are clamped, and one end of the plurality of connecting rods is connected to the same side frame;

[0020] Step 7: the telescopic part of the electric control push rod drives the first moving frame to reset, the first moving frame drives the first lower clamping plate and the first upper clamping plate to reset, so that the clamping of the side frame is lost, all the electric control push rods are turned off, after the connecting rod is installed on the two side frames, the two side frames and the chassis are riveted through a plurality of connecting nails, and finally the installed sofa iron frame is taken down.

[0021] Compared with the prior art, the technical effects achieved by the present application are: 1, the extrusion frame extrudes the corresponding connecting nail to move, so that the connecting nail is separated from the chassis, so that the two positioned side frames can be kept vertically open, when the connecting rod is installed, the probability of inclination deformation of the connecting nail is reduced, so as to ensure the connection strength of the connecting nail after the sofa iron frame is installed, improve the quality of the sofa iron frame, after the connecting nail is separated from the chassis, the distance between the two side frames gradually increases, so as to facilitate the insertion of the connecting rod between the two side frames, and during the movement of the side frame, the side frame remains vertical, thereby reducing the probability of inclination of the side frame during the movement, and further reducing the probability of inclination deformation of the connecting rod during the butt joint, so as to ensure the quality of the sofa iron frame after installation;

[0022] 2, the first lead screw drives the two sliding plates to move towards or away from each other, so as to adjust the position of clamping the side frame, the rotating rod is rotated to adjust the height position of the first upper clamping plate and the adjacent second upper clamping plate, the position of clamping the upper part of the side frame is changed, the initial vertical distance between the blocking block and the adjacent second moving frame is adjusted, so as to adjust the distance of the extrusion frame extruding the corresponding connecting nail upward, so as to adapt to the thickness of the chassis of different models of sofas, the position of the extrusion frame is changed, so that the extrusion frame is aligned with the positions of the corresponding connecting nails on the chassis of different models, so as to adapt to the positioning and installation of different models of sofa iron frames, and improve the application range of the device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic view of the three-dimensional structure of the invention;

[0024] Figure 2 is a schematic view of the three-dimensional structure of the rotating frame of the invention;

[0025] Figure 3 is an exploded view of the three-dimensional structure of the rotating frame, the base frame and the sliding plate of the invention;

[0026] Figure 4 is a schematic view of the three-dimensional structure of the extrusion frame of the invention;

[0027] Figure 5 is a schematic view of the three-dimensional structure of the stop block of the invention;

[0028] Figure 6 is an exploded view of the three-dimensional structure of the first moving frame and the second moving frame of the invention;

[0029] Figure 7 is a schematic view of the three-dimensional structure of the baffle and the elastic plate of the invention;

[0030] Figure 8 is a sectional view of the three-dimensional structure of the rotating cylinder of the invention.

[0031] The labels of the components in the drawings are as follows: 1 - support frame, 2 - rotating frame, 201 - base frame, 202 - frame, 203 - connecting nail, 3 - sliding plate, 4 - electric control push rod, 5 - first moving frame, 6 - elastic strip, 7 - second moving frame, 8 - extrusion frame, 9 - stop block, 10 - motor, 11 - first lead screw, 12 - first rack, 13 - gear, 14 - second rack, 15 - connecting rod, 16 - first lower clamping plate, 17 - second lower clamping plate, 18 - first elastic member, 19 - first upper clamping plate, 20 - second upper clamping plate, 21 - second elastic member, 22 - elastic block, 23 - baffle, 24 - elastic plate, 25 - rotating rod, 26 - inclined surface, 27 - second lead screw, 28 - rotating cylinder. DETAILED DESCRIPTION

[0032] The invention will be further described in detail below with reference to specific embodiments.

[0033] Example 1

[0034] A positioning and clamping device for mounting a sofa iron frame, comprising a support frame, a rotating frame, a sliding plate, an electric control push rod, a first moving frame, an elastic strip, a second moving frame, an extrusion frame, a stop block, a motor, a first lead screw, a first rack, a gear, a second rack, a connecting rod, a first lower clamping plate, a second lower clamping plate, a first elastic member, a first upper clamping plate, a second upper clamping plate, a second elastic member, an elastic block, a baffle, an elastic plate, a rotating rod, an inclined surface, a second lead screw and a rotating cylinder, Figures 1-5As shown, it comprises a support frame 1, the support frame 1 is rotatably connected with a rotating frame 2, the support frame 1 is installed with a control terminal which is not shown in the figure, the rotating frame 2 is detachably connected with a bottom frame 201, the bottom frame 201 is detachably connected with two side frames 202, a plurality of connecting nails 203 are installed between the bottom frame 201 and the side frame 202, the connecting nail 203 can be a rivet, before the connecting rod is installed, the corresponding side frame 202 and the bottom frame 201 are positioned by the connecting nail 203 (that is, the connecting nail 203 is inserted into the corresponding side frame 202 and the bottom frame 201), so as to determine the position of the side frame 202 and the bottom frame 201, after the connecting rod between the two side frames 202 is installed, the corresponding side frame 202 is installed on the bottom frame 201 through the connecting nail 203, the support frame 1 is slidably connected with two slide plates 3 which are symmetrically distributed left and right, the slide plate 3 is installed with two electric control push rods 4 which are symmetrically distributed front and back, all the electric control push rods 4 are electrically connected with the control terminal, the extension parts of the two electric control push rods 4 which are symmetrically distributed on the same slide plate 3 are commonly fixedly connected with a first moving frame 5, the first moving frame 5 is fixedly connected with an elastic strip 6, when the first moving frame 5 and the adjacent second moving frame 7 move relatively, the elastic strip 6 is compressed, the first moving frame 5 is slidably connected with the second moving frame 7 which is fixedly connected with the adjacent elastic strip 6, the second moving frame 7 is provided with a plurality of extrusion frames 8, in this embodiment, the extrusion frame 8 is fixedly connected with the adjacent second moving frame 7, when the extension part of the electric control push rod 4 drives the first moving frame 5 to move upward, the first moving frame 5 first drives the second moving frame 7 to move upward through the adjacent elastic strip 6, so as to make the extrusion frame 8 move upward, the extrusion frame 8 extrudes the corresponding connecting nail 203 to move, so that the connecting nail 203 is separated from the bottom frame 201, the slide plate 3 is provided with stop blocks 9 which are symmetrically distributed left and right, in this embodiment, the stop block 9 is fixedly connected with the adjacent slide plate 3, after the second moving frame 7 moves upward to abut against the adjacent stop block 9, the stop block 9 limits the adjacent second moving frame 7, after the upper side of the extrusion frame 8 moves to be coplanar with the lower side of the corresponding side frame 202, the second moving frame 7 moves to contact the corresponding stop block 9, the first moving frame 5 continues to move relatively and moves relatively with the adjacent second moving frame 7, so that the elastic strip 6 is compressed, the second moving frame 7 is provided with positioning and clamping assemblies which are symmetrically distributed front and back and are used for commonly adjusting the position of the side frame 202.

[0035] As shown in the figure, Figure 3 The support frame 1 is installed with a motor 10 which is electrically connected with the control terminal, the output shaft of the motor 10 is fixedly connected with a first lead screw 11, the first lead screw 11 is provided with two sections of threads which are symmetrically distributed and have opposite rotation directions, the two slide plates 3 which are symmetrically distributed are respectively connected to the two sections of threads of the first lead screw 11.

[0036] As shown in the figure, Figure 4 , Figure 6 And Figure 7As shown, the positioning and clamping assembly comprises a first rack 12 fixedly connected to the adjacent first moving frame 5, the second moving frame 7 is rotationally connected with a gear 13 engaged with the adjacent first rack 12, the second moving frame 7 is slidingly connected with a second rack 14 engaged with the gear 13, when the first moving frame 5 and the adjacent second moving frame 7 produce relative movement in the up-down direction, the first moving frame 5 drives the second rack 14 through the adjacent first rack 12 and the adjacent gear 13, so that the second rack 14 moves horizontally relative to the adjacent second moving frame 7, the second racks 14 on the left and right sides move away from each other, the second racks 14 are fixedly connected with connecting rods 15, the connecting rods 15 are fixedly connected with first lower clamping plates 16, the first lower clamping plates 16 are slidingly connected with second lower clamping plates 17, the first lower clamping plates 16 and the adjacent second lower clamping plates 17 are fixedly connected with first elastic members 18, wherein the first elastic members 18 are tension springs, the first lower clamping plates 16 are slidingly connected with first upper clamping plates 19, the first upper clamping plates 19 are slidingly connected with second upper clamping plates 20, the first upper clamping plates 19 and the adjacent second upper clamping plates 20 are fixedly connected with second elastic members 21, wherein the second elastic members 21 are tension springs, all the first lower clamping plates 16 and all the first upper clamping plates 19 are located between the two side frames 202, when the second racks 14 on the left and right sides respectively drive the adjacent connecting rods 15 to move away from each other, all the first lower clamping plates 16 and all the first upper clamping plates 19 respectively press the corresponding side frames 202 to move, so that the two side frames 202 move away from each other, that is, after the connecting nails 203 are separated from the base frame 201, the distance between the two side frames 202 increases, so that the connecting rods are inserted between the two side frames 202, the opposite sides of the first upper clamping plates 19 and the adjacent second upper clamping plates 20 are fixedly connected with elastic blocks 22, since the upper and lower parts of the side frame 202 have different thicknesses, after the first lower clamping plates 16 and the second lower clamping plates 17 clamp the lower part of the side frame 202, the elastic blocks 22 deform to fit the upper part of the side frame 202, so as to clamp the upper part of the side frame 202, the second moving frame 7 is fixedly connected with a baffle 23, the baffle 23 is fixedly connected with an elastic plate 24, when the connecting rods 15 on the left and right sides move away from each other, the elastic plate 24 limits the adjacent second lower clamping plates 17 and the adjacent second upper clamping plates 20, the elastic coefficient of the elastic plate 24 is greater than the elastic coefficients of the first elastic members 18 and the second elastic members 21, after the first elastic members 18 and the second elastic members 21 are stretched, the elastic plate 24 will start to deform, so as to keep the first lower clamping plates 16 and the second lower clamping plates 17 clamping the lower part of the side frame 202 and the first upper clamping plates 19 and the second upper clamping plates 20 clamping the upper part of the side frame 202, all the first lower clamping plates 16 and the corresponding second lower clamping plates 17 are respectively located at the front and rear corners of the lower part of the corresponding side frame 202, and all the first upper clamping plates 19 and the corresponding second upper clamping plates 20 are located at the front and rear corners of the upper part of the corresponding side frame, so as to fix the four corners of the side frame 202 and reduce the probability of offset and shaking of the side frame 202.

[0037] The specific working principle is as follows:

[0038] Before using the device, the operator starts the motor 10 through the control terminal, the output shaft of the motor 10 drives the first lead screw 11 to rotate, the first lead screw 11 drives the two sliding plates 3 to move towards or away from each other, so as to change the positions of all parts on the sliding plates 3, and the positions of the first lower clamping plate 16, the second lower clamping plate 17, the first upper clamping plate 19 and the second upper clamping plate 20 are changed, so as to change the clamping position of the frame 202, so as to adapt to the positioning and installation of different models of sofa iron frames. After adjustment, the motor 10 is turned off through the control terminal.

[0039] When the operator needs to use the device to assemble and position the sofa, the operator installs the base 201 on the rotating frame 2, and then positions the two frames 202 on the left and right sides of the base 201 through a plurality of connecting nails 203 (at this time, the connecting nails 203 are inserted into the corresponding frame 202 and the base 201, and the frame 202 has not been fixed and installed on the base 201), so that the frame 202 is located between the corresponding first lower clamping plate 16 and the adjacent second lower clamping plate 17. When the operator needs to install the connecting rod between the two frames 202, the operator starts all the electric control push rods 4 through the control terminal, the extension parts of the corresponding two electric control push rods 4 drive the elastic strips 6 to move upwards through the first moving frame 5, the elastic strips 6 drive the second moving frame 7 to move upwards, the second moving frame 7 drives the extrusion frame 8 to move upwards, the extrusion frame 8 extrudes the corresponding connecting nail 203 to move, so that the connecting nail 203 is separated from the base 201, so that the two positioned frames 202 can be kept vertically open. When the connecting rod is installed, the probability of inclination and deformation of the connecting nail 203 is reduced, so as to ensure the connection strength of the connecting nail 203 after the sofa iron frame is installed, and improve the quality of the sofa iron frame.

[0040] When the extrusion frame 8 pushes the connecting nail 203 out of the base 201, the upper side of the extrusion frame 8 is at the same horizontal plane as the lower side of the corresponding frame 202. After the upper side of the extrusion frame 8 moves to the same plane as the lower side of the corresponding frame 202, the second moving frame 7 moves to contact the corresponding stop block 9. With the first moving frame 5 continuing to move upwards, the second moving frame 7 is blocked by the stop block 9, the first moving frame 5 drives the first rack 12 to move upwards relative to the second moving frame 7, so that the elastic strip 6 is compressed. The first rack 12 drives the second rack 14 through the adjacent gear 13, so that the second rack 14 moves horizontally relative to the adjacent second moving frame 7, and the second racks 14 on the left and right sides move away from each other.

[0041] In the process of moving the second rack 14 away from the left and right sides, the second rack 14 on the left and right sides drives the adjacent connecting rod 15 to move away from the left and right sides, the connecting rod 15 drives the adjacent first lower clamping plate 16 to move, the first lower clamping plate 16 drives the adjacent first upper clamping plate 19 to move, all the first lower clamping plates 16 and all the first upper clamping plates 19 respectively extrude the corresponding frame 202 to move, so that the two frames 202 move away from each other, that is, after the connecting nails 203 are separated from the base frame 201, the distance between the two frames 202 is increased, so that the connecting rod is inserted between the two frames 202.

[0042] In the process of increasing the distance between the two frames 202, the elastic plate 24 blocks the corresponding second lower clamping plate 17 and the corresponding second upper clamping plate 20, and the connecting rod 15 drives the corresponding first lower clamping plate 16 and the corresponding first upper clamping plate 19 to move, so that the first lower clamping plate 16 moves relative to the second lower clamping plate 17, and the first upper clamping plate 19 moves relative to the second upper clamping plate 20. Since the elastic coefficient of the elastic plate 24 is greater than the elastic coefficients of the first elastic member 18 and the second elastic member 21, the first elastic member 18 and the second elastic member 21 are compressed. In the process of moving the frame 202, all the first lower clamping plates 16, the second lower clamping plates 17, the first upper clamping plates 19 and the second upper clamping plates 20 respectively clamp the four corners of the two frames 202, so that the frame 202 remains vertical, thereby reducing the probability of tilting of the frame 202 during movement, and further reducing the probability of tilting deformation of the subsequent connecting rod butt joint, so as to ensure the quality of the sofa iron frame after installation.

[0043] After the distance between the two frames 202 is increased, the operator closes all the electric control push rods 4 through the control terminal, installs the connecting rod on one frame 202, and then controls all the electric control push rods 4 to retract and reset through the control terminal, so that the first moving frame 5 moves downward and resets, the elastic strip 6 rebounds and resets, the first rack 12 drives the second rack 14 through the adjacent gear 13, so that the second rack 14 drives the connecting rod 15 to reset, all the first lower clamping plates 16, the second lower clamping plates 17, the first upper clamping plates 19 and the second upper clamping plates 20 are reset, and the two frames 202 are reset. After the frame is reset, the two ends of the connecting rod are respectively installed on the two frames 202, the first moving frame 5 continues to move downward and drives the extrusion frame 8 to move downward and reset through the elastic strip 6 and the second moving frame 7, the connecting nail 203 moves downward under the influence of gravity and is inserted into the base frame 201, the operator closes all the electric control push rods 4 through the control terminal, and then rivets the corresponding frame 202 and the base frame 201 through the connecting nail 203.

[0044] When the sofa iron frame is installed, the operator takes down the installed sofa iron frame.

[0045] Example 2

[0046] On the basis of the above embodiment 1, as shown in Figure 7 The connecting rod 15 is threadedly connected with the rotating rod 25, the first upper clamping plate 19 is rotationally connected with the adjacent rotating rod 25, when the rotating rod 25 is rotated, the rotating rod 25 drives the adjacent first upper clamping plate 19 to move up and down, and the first upper clamping plate 19 drives the adjacent second upper clamping plate 20 to move up and down, so as to adjust the height positions of the first upper clamping plate 19 and the adjacent second upper clamping plate 20, so as to clamp the frames 202 of different models, and improve the adaptability range of the device.

[0047] Embodiment 3

[0048] On the basis of the above embodiment 2, as shown in Figure 4 and Figure 8 The stop block 9 is provided with a slope 26, the slope 26 gradually inclines downward from the position close to the adjacent first moving frame 5 to the position far away, the stop block 9 is threadedly connected with the second lead screw 27, and the rotating cylinder 28 is slidably connected between the corresponding two second lead screws 27. In the above embodiment, the stop block 9 is fixedly connected with the adjacent sliding plate 3, in this embodiment, the stop block 9 is slidably connected with the adjacent sliding plate 3, when the rotating cylinder 28 is rotated, the corresponding left and right two second lead screws 27 respectively drive the adjacent stop block 9 to move, because the slope 26 gradually inclines downward from the position close to the adjacent first moving frame 5 to the position far away, therefore, during the movement of the stop block 9, the height at which the stop block 9 contacts the adjacent second moving frame 7 changes, so as to adjust the position when the first moving frame 5 relatively moves with the adjacent second moving frame 7, thereby adjusting the distance that the extrusion frame 8 extrudes the corresponding connecting nail 203 to move upward, so as to adapt to the thickness of the chassis 201 of different models of sofas, and improve the adaptability range of the device.

[0049] As shown in Figure 4 and Figure 5 In the above embodiment, the extrusion frame 8 is fixedly connected with the adjacent second moving frame 7, in this embodiment, the extrusion frame 8 is slidably connected with the adjacent second moving frame 7, for adjusting the position of the extrusion frame 8, so that the extrusion frame 8 is aligned with the positions of the corresponding connecting nails 203 on the chassis 201 of different models, thereby making the device adapt to assemble different models of sofas.

[0050] Embodiment 4

[0051] On the basis of the above embodiment 3, as shown in Figures 1-8 A positioning and clamping method for sofa iron frame installation, based on the above-mentioned positioning and clamping device for sofa iron frame installation, the specific steps are as follows:

[0052] Step 1: start the motor 10, the output shaft of the motor 10 drives the first lead screw 11 to rotate, so that the symmetrically distributed sliding plates 3 move towards or away from each other, so as to change the distance between the symmetrically distributed sliding plates 3;

[0053] Step 2: rotate the rotating rod 25, the rotating rod 25 drives the adjacent first upper clamping plate 19 to move, the first upper clamping plate 19 drives the adjacent second upper clamping plate 20 to move, so as to adjust the height position of the first upper clamping plate 19 and the adjacent second upper clamping plate 20;

[0054] Step 3: slide the extrusion frame 8, so that the extrusion frame 8 is aligned with the position of the corresponding connecting nail 203 on the different model chassis 201;

[0055] Step 4: rotate the rotating cylinder 28, the corresponding second lead screw 27 drives the adjacent stop block 9 to move, so as to adjust the initial vertical distance between the stop block 9 and the adjacent second moving frame 7;

[0056] Step 5: position the chassis 201, a plurality of connecting nails 203 and two frame 202, turn on all the electric control push rod 4, the telescopic part of the electric control push rod 4 drives the extrusion frame 8 to move through the first moving frame 5, the elastic strip 6 and the second moving frame 7, the extrusion frame 8 extrudes the corresponding connecting nail 203 to move away from the chassis 201;

[0057] Step 6: after the extrusion frame 8 ejects the connecting nail 203 from the chassis 201, the first moving frame 5 continues to move and drives the corresponding first lower clamping plate 16 to move through the connecting rod 15, the first lower clamping plate 16 drives the corresponding first upper clamping plate 19 to move, and the four corners of the two frame 202 are clamped, and one end of the plurality of connecting rods is connected to the same frame 202;

[0058] Step 7: the telescopic part of the electric control push rod 4 drives the first moving frame 5 to reset, the first moving frame 5 drives the first lower clamping plate 16 and the first upper clamping plate 19 to reset, so as to lose the clamping of the frame 202, turn off all the electric control push rod 4, after the connecting rod is installed on the two frame 202, the two frame 202 and the chassis 201 are riveted through a plurality of connecting nails 203, and finally the installed sofa iron frame is taken down.

[0059] The above is only the preferred embodiment of the present application, it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A positioning and clamping device for installing a sofa frame, the sofa frame comprising a base frame, side frames, and connecting rods connecting the two side frames, characterized in that it includes... A support frame (1) is rotatably connected to a rotating frame (2). The rotating frame (2) is detachably connected to a base frame (201). The base frame (201) is detachably connected to two side frames (202). Several connecting pins (203) are installed between the base frame (201) and the side frames (202). The support frame (1) is slidably connected to two symmetrically distributed sliding plates (3). Each sliding plate (3) is equipped with symmetrically distributed electrically controlled push rods (4). The telescopic parts of the symmetrically distributed electrically controlled push rods (4) are jointly fixed to a first movable frame (5). The first movable frame (5) is fixedly connected to an elastic strip (6), and the first movable frame (5) is slidably connected to a second movable frame (7) fixedly connected to the adjacent elastic strip (6). The second movable frame (7) is provided with a plurality of pressing frames (8), which are used to press the corresponding connecting nail (203) to move. The sliding plate (3) is provided with symmetrically distributed blocks (9), which are used to limit the adjacent second movable frames (7). The second movable frame (7) is provided with symmetrically distributed positioning clamping components for jointly adjusting the position of the frame (202). The positioning and clamping assembly includes a first rack (12), which is fixedly connected to an adjacent first movable frame (5). A second movable frame (7) is rotatably connected to a gear (13) meshing with the adjacent first rack (12). The second movable frame (7) is slidably connected to a second rack (14) meshing with the gear (13). A connecting rod (15) is fixedly connected to the second rack (14). A first lower clamping plate (16) is fixedly connected to the connecting rod (15). A second lower clamping plate (17) is slidably connected to the first lower clamping plate (16). The first lower clamping plate (16) and the adjacent first movable frame (5) are connected to the first movable frame (7). A first elastic element (18) is fixedly connected between the adjacent second lower clamping plate (17). The first lower clamping plate (16) is slidably connected to a first upper clamping plate (19). The first upper clamping plate (19) is slidably connected to a second upper clamping plate (20). A second elastic element (21) is fixedly connected between the first upper clamping plate (19) and the adjacent second upper clamping plate (20). A baffle (23) is fixedly connected to the second movable frame (7). An elastic plate (24) is fixedly connected to the baffle (23). The elastic plate (24) is used to limit the adjacent second lower clamping plate (17) and the adjacent second upper clamping plate (20).

2. A positioning and clamping device for installing a sofa frame according to claim 1, characterized in that, The support frame (1) is equipped with a motor (10), and the output shaft of the motor (10) is fixedly connected to a first lead screw (11). The symmetrically distributed sliding plates (3) are all threadedly connected to the first lead screw (11).

3. A positioning and clamping device for installing a sofa frame according to claim 2, characterized in that, The first upper clamping plate (19) and the adjacent second upper clamping plate (20) are both fixed with elastic blocks (22) on opposite sides.

4. A positioning and clamping device for installing a sofa frame according to claim 3, characterized in that, The elastic coefficient of the elastic plate (24) is greater than that of the first elastic element (18) and the second elastic element (21).

5. A positioning and clamping device for installing a sofa frame according to claim 4, characterized in that, The connecting rod (15) is threadedly connected to a rotating rod (25), and the first upper clamping plate (19) is rotatably connected to the adjacent rotating rod (25).

6. A positioning and clamping device for installing a sofa frame according to claim 5, characterized in that, The stop block (9) is provided with a slope (26), which gradually slopes downward from the point near the adjacent first movable frame (5) to the point far away.

7. A positioning and clamping device for installing a sofa frame according to claim 6, characterized in that, The stop block (9) is threadedly connected to a second lead screw (27), and a rotating cylinder (28) is slidably connected between the two corresponding second lead screws (27). The stop block (9) is slidably connected to the adjacent sliding plate (3).

8. A positioning and clamping device for installing a sofa frame according to claim 7, characterized in that, The extrusion frame (8) is slidably connected to the adjacent second movable frame (7) for adjusting the position of the extrusion frame (8).

9. A positioning and clamping method for installing a sofa frame, using the positioning and clamping device for installing a sofa frame as described in claim 8, characterized in that... The specific steps are as follows: Step 1: Turn on the motor (10). The output shaft of the motor (10) drives the first lead screw (11) to rotate, causing the symmetrically distributed sliding plates (3) to move in opposite directions or away from each other, so as to change the distance between the symmetrically distributed sliding plates (3). Step 2: Rotate the rotating rod (25), which drives the adjacent first upper clamping plate (19) to move, and the first upper clamping plate (19) drives the adjacent second upper clamping plate (20) to move, thereby adjusting the height position of the first upper clamping plate (19) and the adjacent second upper clamping plate (20). Step 3: Slide the extrusion frame (8) to align the extrusion frame (8) with the corresponding connecting nail (203) on the base frame (201) of different models; Step 4: Rotate the rotating cylinder (28), and the corresponding second lead screw (27) drives the adjacent stop (9) to move, adjusting the initial vertical distance between the stop (9) and the adjacent second moving frame (7); Step 5: Position the base frame (201), several connecting pins (203) and two side frames (202), and activate all the electric push rods (4). The telescopic part of the electric push rod (4) drives the extrusion frame (8) to move through the first moving frame (5), the elastic strip (6) and the second moving frame (7). The extrusion frame (8) extrudes the corresponding connecting pin (203) and moves it to detach from the base frame (201). Step 6: After the extrusion frame (8) pushes the connecting nail (203) out of the base frame (201), the first moving frame (5) continues to move and the connecting rod (15) drives the corresponding first lower clamping plate (16) to move. The first lower clamping plate (16) drives the corresponding first upper clamping plate (19) to move, clamping the four corners of the two frame frames (202) and connecting one end of multiple connecting rods to the same frame frame (202). Step 7: The telescopic part of the electric push rod (4) drives the first moving frame (5) to reset, and the first moving frame (5) drives the first lower clamping plate (16) and the first upper clamping plate (19) to reset, thereby losing the clamping of the frame (202). All electric push rods (4) are closed. After the connecting rod is installed on the two frames (202), the two frames (202) and the base frame (201) are riveted by several connecting nails (203). Finally, the installed sofa frame is removed.

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