Automatic bending forming equipment for furniture framework pipe

Abstract

The invention relates to the technical field of pipeline bending, and discloses furniture framework pipe automatic bending forming equipment which comprises a bending part, the bending part comprises a base, the upper surface of the base is rotationally connected with a mold wheel, a connecting plate installed on the lower surface of the base is rotationally connected with a bending wheel and a clamping part, and the clamping part comprises a guide groove and a movable groove. A grinding part used for polishing the surface to be machined is arranged on the side, away from the mold wheel, of the L-shaped plate. The automatic bending forming equipment for the furniture framework pipe can effectively solve the problems that in the prior art, a limiting mechanism generally adopts a structure of a fixed die and a movable die, the fixed die moves towards the movable die, so that the furniture framework pipe to be bent is clamped and limited, axial movement is prevented when the framework pipe is bent subsequently, and if gaps exist between the fixed die and the movable die and the pipe to be machined, the bending quality of the furniture framework pipe is influenced. The problem that the bending precision of the to-be-machined pipe is affected due to the fact that radial deviation of the central axis of the to-be-machined pipe is caused is solved.

Description

Technical Field

[0001] The invention relates to the technical field of pipe bending, and in particular to an automatic bending and forming device for a furniture skeleton pipe. Background Art

[0002] Furniture skeleton tubes are metal tubes used to make furniture skeletons. They are usually made of materials such as Q195 and Q235. They have certain strength and toughness. Existing bending equipment can be used to accurately bend furniture skeleton tubes. They are widely used in the production of furniture parts such as chair armrests and table support legs. Due to their excellent physical properties and processing flexibility, they are also used to make more complex and sophisticated furniture design elements.

[0003] Before bending, the furniture skeleton tube will be used in conjunction with a limiting mechanism, the purpose of which is to improve the processing accuracy of the pipe bending and ensure product quality. However, the existing limiting mechanism generally adopts a fixed mold and a movable mold structure. The fixed mold moves toward the movable mold, so that the furniture skeleton tube to be bent is clamped and limited to prevent axial movement during subsequent bending of the skeleton tube. If there is a gap between the fixed mold and the movable mold and the tube to be processed, the central axis of the tube to be processed will be radially offset, thereby affecting the bending accuracy of the tube to be processed. Summary of the invention

[0004] Technical issues solved In view of the above-mentioned shortcomings of the prior art, the present invention provides an automated bending and forming equipment for furniture skeleton tubes, which can effectively solve the problem in the prior art that the limiting mechanism generally adopts a structure of a fixed mold and a movable mold, and the fixed mold moves toward the movable mold, so that the furniture skeleton tube to be bent is clamped and limited to prevent axial movement during subsequent bending of the skeleton tube. If there is a gap between the fixed mold and the movable mold and the tube to be processed, the central axis of the tube to be processed will be radially offset, thereby affecting the bending accuracy of the tube to be processed. Technical Solution

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides an automatic bending and forming device for furniture frame tubes, comprising: A bending part, the bending part comprises a base, an upper surface of the base is rotatably connected to a mold wheel, and a connecting plate installed on a lower surface thereof is rotatably connected to a bending wheel; A clamping part, wherein the clamping part comprises a guide groove and a movable groove, wherein the guide groove and the movable groove are both provided on the upper surface of the base, and the guide groove and the movable groove are connected to each other, wherein the base is slidably connected to an L-shaped frame via an electric slide rail provided on the upper surface thereof, wherein an L-shaped plate is slidably connected inside the L-shaped frame, and the bottom end of the L-shaped plate is slidably connected to the guide groove, and an arc-shaped limit plate is fixedly connected to the side of the L-shaped plate close to the tube to be processed; Wherein, an elastic limiting member is provided in the movable groove and can be used to push the L-shaped plate to move; Wherein, a grinding portion which can be used for polishing the surface to be processed is provided on the side of the L-shaped plate away from the mold wheel.

[0006] Furthermore, the elastic limiting member includes a movable block, which is slidably connected in the movable groove. A reset spring connected to the inner wall of the movable groove is provided on one side of the movable block. A first electromagnet is fixedly connected to the side of the movable groove away from the reset spring, and a second electromagnet is fixedly connected to the lower part of the L-shaped plate.

[0007] Furthermore, a protrusion is fixedly connected to the bottom end of the movable block, and a slot is provided on the side of the protrusion away from the reset spring, an elastic plate is fixedly connected to the side of the movable slot close to the reset spring, and a pin is provided on the side of the elastic plate close to the protrusion to fit the slot.

[0008] Furthermore, the grinding part includes a fixing frame, the bottom end of the fixing frame is fixedly connected to the upper surface of the base, a top plate is detachably installed above the fixing frame, a bidirectional screw is rotatably connected to the top end of the top plate, a mounting frame is sleeved on the circumferential outer surface of the bidirectional screw, a grinding piece is provided at the bottom end of the mounting frame, two grinding pieces are provided and are symmetrically distributed with respect to the central axis of the tube to be processed.

[0009] Furthermore, the polishing piece includes an arc-shaped frame, which is fixedly connected to the bottom end of the mounting frame and is hollow. A dust handling mechanism is provided in the cavity of the arc-shaped frame for absorbing dust generated during the polishing process of the pipe to be processed.

[0010] Furthermore, a mounting seat is rotatably mounted on the arc-shaped frame, and the mounting seat is slidably connected to a grinding roller via a mounting groove arranged inside it. The grinding roller is fixedly connected to a grinding block via an elastic member arranged on its circumferential outer surface, and the grinding roughness of the surface of the grinding block increases successively. The arc-shaped frame is provided with a driving unit that can be used to adjust the use angle of the grinding roller.

[0011] Furthermore, the grinding part also includes an adjusting mechanism, which includes a telescopic rod, a plurality of telescopic rods are provided and distributed in a circular array about the central axis of the arc-shaped frame, the fixed portion of the telescopic rod is fixedly connected to the inner surface of the arc-shaped frame, the movable portion of the telescopic rod is fixedly connected to an abutment plate, the side of the telescopic rod is fixedly connected to a compression spring, and the bottom end of the compression spring is connected to the inner surface of the arc-shaped frame, the side of the telescopic rod is rotatably connected to a connecting rod, and the connecting rod and the compression spring are alternately distributed, the connecting rod away from the telescopic rod is rotatably connected to the outer surface of the circumference of an adjacent grinding roller, the middle part of the connecting rod is rotatably connected to a bracket, and the bracket is fixedly connected to the inner surface of the arc-shaped frame on the side away from the connecting rod.

[0012] Furthermore, the base is slidably connected to a limiting slider which can be used to limit the position of the pipe to be processed via an electric slide rail arranged on its upper surface. Beneficial Effects

[0013] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is provided with a clamping part and a grinding part, an adjustment mechanism in the housing, and a connecting rod and a bracket, which can form a lever. Under the cooperation of the abutment plate, the compression spring and the telescopic rod, the grinding piece can automatically fit the outer wall of the tube to be processed, so that the grinding piece can always fit on the surface of the tube to be processed, which is convenient for adapting to the grinding and polishing of different sizes of tubes to be processed. In addition, the surface of the grinding block is provided with multiple grinding surfaces, and the grinding roughness of each grinding surface is successively increased. In conjunction with the external driving unit, the grinding surface on the grinding block can be adjusted accordingly, so that the grinding surfaces with different grinding roughnesses are in contact with the surface of the tube to be processed, which is convenient for grinding on demand for different degrees of rust on the surface of the tube to be processed. At the same time, the two arc-shaped limit plates of the clamping part can form a complete circular ring, there is a gap between the circular ring and the tube to be processed, and it can move with the tube to be processed. When the grinding piece grinds the non-end position of the tube to be processed, the circular ring can prevent the tube to be processed from shaking and affecting the grinding accuracy. When bending, the elastic limiter can instantly fit the two arc-shaped limit plates to the tube to be processed until the tube to be processed is clamped, which can ensure that the central axis of the tube to be processed always coincides with the bending part. At the same time, it can prevent the tube to be processed from moving radially along the bending part when bending, thereby affecting the bending quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the present invention; Figure 2 It is a schematic diagram of a partial three-dimensional structure of a bending portion according to an embodiment of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of an L-shaped frame, an L-shaped plate and an arc-shaped limiting plate according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the partial structure of the elastic limiting member according to an embodiment of the present invention; Figure 5 For the embodiment of the present invention Figure 4 A schematic diagram of the structure enlargement in the middle; Figure 6This is a schematic diagram of a partial three-dimensional structure of a grinding part according to an embodiment of the present invention; Figure 7 This is a schematic diagram of a partial three-dimensional structure of an arc-shaped frame according to an embodiment of the present invention; Figure 8 It is a schematic diagram of a partial three-dimensional structure of a grinding roller and an adjustment mechanism according to an embodiment of the present invention; Fig. 9 For the embodiment of the present invention Figure 8 Enlarged schematic diagram of the structure at point B in the middle.

[0016] The numbers in the figure represent: 1, bending part; 11, base; 12, mold wheel; 13, bending wheel; 14, limit slider; 2, clamping part; 21, guide groove; 22, movable groove; 23, L-shaped frame; 24, L-shaped plate; 25, arc-shaped limit plate; 26, elastic limiter; 261, movable block; 262, return spring; 263, first electromagnet; 264, second electromagnet; 265, bump; 266, card Groove; 267, elastic plate; 268, latch; 3, grinding part; 31, fixing frame; 32, top plate; 33, bidirectional screw; 34, mounting frame; 35, grinding piece; 351, arc frame; 352, dust handling mechanism; 353, mounting seat; 354, grinding roller; 355, adjusting mechanism; 3551, telescopic rod; 3552, abutment plate; 3553, compression spring; 3554, connecting rod; 3555, bracket. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The present invention will be further described below in conjunction with the embodiments. Example

[0019] See also Figure 1-Figure 9 The present invention provides a technical solution: an automatic bending and forming device for furniture frame tubes, comprising: The bending part 1 comprises a base 11, a mold wheel 12 is rotatably connected to the upper surface of the base 11, and a connecting plate installed on the lower surface thereof is rotatably connected to a bending wheel 13; The clamping part 2 includes a guide groove 21 and a movable groove 22. The guide groove 21 and the movable groove 22 are both provided on the upper surface of the base 11, and the guide groove 21 and the movable groove 22 are connected to each other. The base 11 is slidably connected to an L-shaped frame 23 through an electric slide rail provided on its upper surface. An L-shaped plate 24 is slidably connected inside the L-shaped frame 23, and the bottom end of the L-shaped plate 24 is slidably connected in the guide groove 21. The L-shaped plate 24 is fixedly connected to an arc-shaped limit plate 25 near the side of the tube to be processed; The movable groove 22 is provided with an elastic stopper 26 which can be used to push the L-shaped plate 24 to move; A grinding portion 3 for polishing the surface to be processed is provided on the side of the L-shaped plate 24 away from the mold wheel 12 .

[0020] The elastic limiting member 26 includes a movable block 261, which is slidably connected in the movable groove 22. A return spring 262 connected to the inner wall of the movable groove 22 is provided on one side of the movable block 261. A first electromagnet 263 is fixedly connected to the side of the movable groove 22 away from the return spring 262, and a second electromagnet 264 is fixedly connected to the lower part of the L-shaped plate 24.

[0021] A protrusion 265 is fixedly connected to the bottom end of the movable block 261, and a slot 266 is provided on the side of the protrusion 265 away from the reset spring 262. An elastic plate 267 is fixedly connected to the side of the movable slot 22 close to the reset spring 262, and a pin 268 is provided on the side of the elastic plate 267 close to the protrusion 265 to fit the slot 266.

[0022] The grinding part 3 includes a fixing frame 31, the bottom end of the fixing frame 31 is fixedly connected to the upper surface of the base 11, a top plate 32 is detachably installed above the fixing frame 31, a bidirectional screw 33 is rotatably connected to the top end of the top plate 32, a mounting frame 34 is sleeved on the circumferential outer surface of the bidirectional screw 33, a grinding piece 35 is provided at the bottom end of the mounting frame 34, and two grinding pieces 35 are provided and are symmetrically distributed with respect to the central axis of the tube to be processed.

[0023] The polishing member 35 includes an arc frame 351, which is fixedly connected to the bottom end of the mounting frame 34 and is hollow. A dust handling mechanism 352 is provided in the cavity of the arc frame 351 for absorbing dust generated during the polishing process of the pipe to be processed.

[0024] A mounting seat 353 is rotatably mounted on the arc-shaped frame 351, and the mounting seat 353 is slidably connected to a grinding roller 354 via a mounting groove arranged inside the mounting seat 353. The grinding roller 354 is fixedly connected to a grinding block via an elastic member arranged on its circumferential outer surface, and the grinding roughness of the surface of the grinding block increases successively. A driving unit that can be used to adjust the use angle of the grinding roller 354 is provided on the arc-shaped frame 351.

[0025] The grinding piece 35 also includes an adjusting mechanism 355, which includes a telescopic rod 3551. The telescopic rod 3551 is provided with a plurality of telescopic rods and is distributed in a circular array about the central axis of the arc-shaped frame 351. The fixed portion of the telescopic rod 3551 is fixedly connected to the inner surface of the arc-shaped frame 351. The movable portion of the telescopic rod 3551 is fixedly connected to a contact plate 3552. A compression spring 3553 is fixedly connected to the side of the telescopic rod 3551, and the bottom end of the compression spring 3553 is connected to the inner surface of the arc-shaped frame 351. A connecting rod 3554 is rotatably connected to the side of the telescopic rod 3551, and the connecting rod 3554 and the compression spring 3553 are alternately distributed. The connecting rod 3554 is rotatably connected to the outer surface of the circumference of the adjacent grinding roller 354 at one end away from the telescopic rod 3551. A bracket 3555 is rotatably connected to the middle part of the connecting rod 3554, and the bracket 3555 is fixedly connected to the inner surface of the arc-shaped frame 351 at one side away from the connecting rod 3554.

[0026] The base 11 is slidably connected to a limiting slider 14 which can be used to limit the position of the pipe to be processed via an electric slide rail arranged on the upper surface of the base 11.

[0027] refer to Figure 1-Figure 9 The limiting mechanism generally adopts a fixed mold and a movable mold structure. The fixed mold moves toward the movable mold, so that the furniture skeleton tube to be bent is clamped and limited to prevent axial movement during subsequent bending of the skeleton tube. If there is a gap between the fixed mold and the movable mold and the tube to be processed, the central axis of the tube to be processed will be radially offset, thereby affecting the bending accuracy of the tube to be processed. In order to overcome the above-mentioned defects, the present invention designs an automatic bending and forming device for furniture skeleton tubes.

[0028] Loading process: The staff sets one end of the tube to be processed on the output end of the feeding mechanism (the expansion block in the feeding mechanism is used in conjunction with the external driving element to make the expansion block fit tightly with the inner wall of the tube to be processed). Then, the electric slide rail on the base 11 can drive the feeding mechanism and the fixed tube to be processed to move synchronously. In addition, the base 11 is also provided with a support seat driven by an electric push rod (which can support the tube to be processed to avoid the lack of support on the side of the tube to be processed away from the feeding mechanism, and the tube to be processed will shake during the movement). The support seat adopts an arc surface setting, and its inner surface is set as a smooth plane to ensure that the tube to be processed can move smoothly inside it. In addition, the feeding mechanism is also provided with a driving element that can control the rotation of its output end, which can realize the rotation of the tube to be processed and facilitate subsequent grinding.

[0029] Grinding process of the tube to be processed: When the tube to be processed enters the arc-shaped frame 351, the bidirectional screw 33 on the top plate 32 will rotate. The bidirectional screw 33 can be driven by a stepper motor, a servo motor or other driving parts. A stepper motor is preferred here (because the threads at both ends of the bidirectional screw 33 rotate in opposite directions, the mounting frame 34 will move toward each other along the central axis of the bidirectional screw 33, which can ensure that the two arc-shaped frames 351 move the same distance until they fit the outer surface of the tube to be processed). When the outer wall of the tube to be processed contacts and squeezes the abutment plate 3552, the movable part of the telescopic rod 3551 will shrink inward, and the connecting rod 3554 cooperates with the bracket 3555 to form a "lever". ”, the grinding roller 354 can be moved toward the tube to be processed (the mounting seat 353 is provided with a mounting groove in an arc shape, which conforms to the moving trajectory of the grinding roller 354, and no motion interference occurs, ensuring that the installation drives the grinding roller 354 to move toward the tube to be processed), until the grinding roller 354 is tightly fitted with the outer wall of the tube to be processed (the elastic member arranged on the outer surface of the grinding roller 354 is a hollow elastic plate 267, and the grinding roller 354 is provided with a plurality of evenly distributed grinding surfaces, the middle part of the grinding surface is arc-shaped, and the grinding roughness of each grinding surface is different, which increases in sequence, so that the user can select the grinding surface that meets the grinding requirements for grinding and polishing). When the tube to be processed and the grinding roller 354 are in contact with each other (the arc frame 351 is hollow, and the inner surface of the arc frame 351 is provided with an open groove for installing the grinding roller 354), the elastic member will rely on its own elastic force to make the grinding surface on the grinding roller 354 fit more closely with the outer wall of the tube to be processed, so as to improve the grinding effect. After the fitting is completed, the driving element in the feeding mechanism will drive the tube to be processed to rotate at a constant speed inside it, thereby completing the grinding. At the same time, the dust handling mechanism 352 in the arc frame 351 will use the conveying pipe and the absorption pipe installed in the arc frame 351 to absorb the impurities and dust generated during the grinding process, so as to prevent a large amount of impurities and dust from flying in the air and affecting the health of the staff.

[0030] When the grinding part 3 polishes the tube to be processed close to the end position, at this time, the L-shaped frame 23 in the clamping part 2 will move with the electric slide rail until the arc-shaped limit plate 25 on the L-shaped plate 24 is sleeved at the end position of the tube to be processed (because the two arc-shaped limit plates 25 are semicircular, and the arc-shaped limit plates 25 are provided with plug-in rods and plug-in grooves, the two arc-shaped limit plates 25 can form a complete ring, and there is a certain gap between the formed ring and the outer wall of the tube to be processed), which can avoid shaking during the polishing process of the tube to be processed and affect the grinding quality. After the grinding is completed, the bidirectional screw 33 will separate the two grinding parts 35 from each other, and then the feeding mechanism can continue to move the tube to be processed.

[0031] Bending process of the pipe to be processed: The feeding mechanism moves the tube to be processed into the bending part 1. At this time, the L-shaped plate 24 of the clamping part 2 will move along the guide groove 21 under the cooperation of the electric slide rail and the L-shaped frame 23. When the L-shaped plate 24 moves to the position of the movable groove 22, the lower part of the L-shaped plate 24 will be squeezed with the movable block 261 (the side of the movable block 261 in contact with the L-shaped movable plate is chamfered, and the movable block 261 slightly extends out of the guide groove 21), and then the latch 268 on the elastic plate 267 will be separated from the latch groove 266 and move along the inclined surface on the protrusion 265 (the elastic plate 267 is not set in the middle of the movable groove 22, when the latch 268 is stuck The movable block 261 is engaged in the card slot 266, so that the elastic plate 267 is deformed. When the card pin 268 is separated from the card slot 266, the elastic plate 267 will be reset to facilitate the next engagement). At this time, the movable block 261 loses the limit of the card pin 268, and the reset spring 262 will push the L-shaped plate 24 to move to the other side of the movable slot 22, so that the two L-shaped plates 24 will instantly approach the pipe to be processed along the movable slot 22 until the two arc-shaped limit plates 25 instantly clamp and limit the pipe to be processed (a positioning rod and a rod sleeve are provided between the L-shaped plate 24 and the L-shaped frame 23, and the positioning rod slides in the rod sleeve to increase the stability of the L-shaped plate 24 during the movement). In addition, the first electromagnet 263 and the second electromagnet 264 will be attracted to each other. After the tube to be processed is clamped, the limiting slider 14 will move toward the tube to be processed, thereby completing the limiting of the tube to be processed before bending, and the external driving element will drive the bending wheel 13 to rotate along the central axis of the mold wheel 12, thereby completing the bending of the furniture frame tube.

[0032] After the bending is completed, the direction of the current inside the first electromagnet 263 changes, so that the magnetic poles of the first electromagnet 263 and the second electromagnet 264 are the same, resulting in mutual repulsion between the two, thereby pushing the L-shaped plate 24 to move along the movable groove 22. At the same time, the movable block 261 will be reset. When the movable block 261 compresses the reset spring 262 again, the elastic plate 267 cooperates with the latch 268 to move along the other inclined surface of the protrusion 265 until the latch 268 is re-engaged in the latch groove 266. At this time, the two arc-shaped limit plates 25 will separate from each other, and a gap will be generated between them and the tube to be processed. The staff can remove the bent tube to be processed.

[0033] In summary, the present invention uses the grinding part 3 and the clamping part 2 to have the following advantages: Advantage 1: the tube to be processed is in a moving state, and the grinding part 3 is in a fixed position. Since the position of the rust on the surface of the tube to be processed is not unique, the feeding mechanism can flexibly move the position of the tube to be processed, so that the grinding piece 35 in the grinding part 3 can grind different positions on the tube to be processed, and the applicability is better.

[0034] Advantage two: the adjusting mechanism 355 in the arc-shaped frame 351 and the connecting rod 3554 cooperate with the bracket 3555 to form a lever. With the cooperation of the abutment plate 3552, the compression spring 3553 and the telescopic rod 3551, the grinding roller 354 can automatically fit against the outer wall of the pipe to be processed, so that the grinding roller 354 can always fit against the surface of the pipe to be processed, which is convenient for adapting to the grinding and polishing of pipes of different sizes to be processed.

[0035] Advantage three: the outer circumferential surface of the grinding roller 354 is equipped with multiple grinding surfaces through elastic parts, and the grinding roughness of each grinding surface is increased successively. In conjunction with the external driving unit, the grinding surface on the grinding roller 354 can be adjusted accordingly, so that the grinding surfaces with different grinding roughness are in contact with the surface of the pipe to be processed, which is convenient for on-demand grinding of different degrees of rust on the surface of the pipe to be processed.

[0036] Advantage four, a dust handling mechanism 352 is provided in the arc frame 351, and the dust handling mechanism 352 can be used to collect the dust generated during the grinding process. In addition, the two arc frames 351 can be combined into a complete frame, which can ensure that the grinding process of the pipe to be processed is carried out in the frame, avoiding the dust and impurities generated by the grinding from flying in the air and affecting the health of the workers. At the same time, the two arc frames 351 can be separated from each other to avoid some impurities falling into the arc frame 351 and affecting the use of the grinding roller 354 next time.

[0037] Advantage five: the two arc-shaped limit plates 25 of the clamping part 2 can form a complete circular ring. There is a gap between the circular ring and the tube to be processed, and the circular ring can move with the tube to be processed. When the grinding roller 354 grinds the non-end position of the tube to be processed, the circular ring is set on the tube to be processed, which can prevent the tube to be processed from shaking and affecting the grinding accuracy. When bending, the elastic limiter 26 can instantly fit the two arc-shaped limit plates 25 to the tube to be processed until the tube to be processed is clamped by the limit position, which can ensure that the central axis of the tube to be processed always coincides with the bending part 1. At the same time, it can prevent the tube to be processed from moving radially with the bending part 1 when the tube to be processed is bent, which affects the bending quality.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A furniture frame tube automatic bending and forming equipment, characterized in that: include: A bending portion (1), the bending portion (1) comprising a base (11), the upper surface of the base (11) being rotatably connected to a mold wheel (12), and a connecting plate mounted on the lower surface thereof being rotatably connected to a bending wheel (13); A clamping portion (2), the clamping portion (2) comprising a guide groove (21) and a movable groove (22), the guide groove (21) and the movable groove (22) both being provided on the upper surface of the base (11), and the guide groove (21) and the movable groove (22) being communicated with each other, the base (11) being slidably connected to an L-shaped frame (23) via an electric slide rail provided on the upper surface thereof, the L-shaped frame (23) being slidably connected to an L-shaped plate (24) inside, and the bottom end of the L-shaped plate (24) being slidably connected to the guide groove (21), and the L-shaped plate (24) being fixedly connected to an arc-shaped limit plate (25) on a side close to the tube to be processed; Wherein, an elastic limiting member (26) is provided in the movable groove (22) and can be used to push the L-shaped plate (24) to move; Wherein, a grinding portion (3) which can be used for polishing the surface to be processed is provided on the side of the L-shaped plate (24) away from the mold wheel (12).

2. The automatic bending and forming equipment for furniture skeleton tubes according to claim 1 is characterized in that: The elastic limiting member (26) comprises a movable block (261), the movable block (261) being slidably connected in the movable groove (22), a return spring (262) connected to the inner wall of the movable groove (22) being provided on one side of the movable block (261), a first electromagnet (263) being fixedly connected to a side of the movable groove (22) away from the return spring (262), and a second electromagnet (264) being fixedly connected to the lower part of the L-shaped plate (24).

3. The automatic bending and forming equipment for furniture skeleton tubes according to claim 2 is characterized in that: A protrusion (265) is fixedly connected to the bottom end of the movable block (261), and a slot (266) is provided on the side of the protrusion (265) away from the return spring (262). An elastic plate (267) is fixedly connected to the side of the movable groove (22) close to the return spring (262), and a latch pin (268) that fits the slot (266) is provided on the side of the elastic plate (267) close to the protrusion (265).

4. The automatic bending and forming equipment for furniture skeleton tubes according to claim 1 is characterized in that: The grinding part (3) comprises a fixing frame (31), the bottom end of the fixing frame (31) is fixedly connected to the upper surface of the base (11), a top plate (32) is detachably mounted on the top of the fixing frame (31), a bidirectional screw (33) is rotatably connected to the top end of the top plate (32), a mounting frame (34) is sleeved on the circumferential outer surface of the bidirectional screw (33), a grinding piece (35) is provided at the bottom end of the mounting frame (34), and two grinding pieces (35) are provided and are symmetrically distributed about the central axis of the tube to be processed.

5. The automatic bending and forming equipment for furniture frame tubes according to claim 4 is characterized in that: The polishing member (35) comprises an arc-shaped frame (351), the arc-shaped frame (351) being fixedly connected to the bottom end of the mounting frame (34), and the arc-shaped frame (351) being hollow, and a dust handling mechanism (352) being provided in the cavity of the arc-shaped frame (351) for absorbing dust generated during the polishing process of the tube to be processed.

6. The automatic bending and forming equipment for furniture frame tubes according to claim 5 is characterized in that: A mounting seat (353) is rotatably mounted on the arc-shaped frame (351); the mounting seat (353) is slidably connected to a grinding roller (354) via a mounting groove arranged inside the mounting seat (353); the grinding roller (354) is fixedly connected to a grinding block via an elastic member arranged on the outer surface of the grinding roller, and the grinding roughness of the surface of the grinding block increases in sequence; and a driving unit that can be used to adjust the use angle of the grinding roller (354) is provided on the arc-shaped frame (351).

7. The automatic bending and forming equipment for furniture frame tubes according to claim 4 is characterized in that: The grinding piece (35) further comprises an adjusting mechanism (355), wherein the adjusting mechanism (355) comprises a telescopic rod (3551), wherein a plurality of the telescopic rods (3551) are arranged and arranged in a circular array about the central axis of the arc-shaped frame (351), wherein a fixed portion of the telescopic rod (3551) is fixedly connected to the inner surface of the arc-shaped frame (351), a movable portion of the telescopic rod (3551) is fixedly connected to an abutment plate (3552), and a compression spring (3553) is fixedly connected to the side of the telescopic rod (3551), and the bottom of the compression spring (3553) is fixedly connected to the inner surface of the arc-shaped frame (351). The ends of the telescopic rods (3551) are connected to the inner surface of the arc-shaped frame (351); the side of the telescopic rod (3551) is rotatably connected to a connecting rod (3554), and the connecting rod (3554) and the compression spring (3553) are alternately distributed; one end of the connecting rod (3554) away from the telescopic rod (3551) is rotatably connected to the outer surface of the circumference of the adjacent grinding roller (354); the middle part of the connecting rod (3554) is rotatably connected to a bracket (3555); and the side of the bracket (3555) away from the connecting rod (3554) is fixedly connected to the inner surface of the arc-shaped frame (351).

8. The automatic bending and forming equipment for furniture frame tubes according to claim 1 is characterized by: The base (11) is slidably connected to a limiting slider (14) which can be used to limit the position of the pipe to be processed via an electric slide rail arranged on its upper surface.

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