Furniture supporting frame built-in bolt mounting equipment

Abstract

The invention relates to furniture supporting frame built-in bolt mounting equipment which comprises symmetrically-arranged vibration discs, a reversing frame is arranged at a discharging opening of each vibration disc, a feeding mechanism is arranged at the lower end of each reversing frame, a punching head assembly perpendicular to the feeding mechanism is arranged on the side wall of each vibration disc, and an automatic feeding box is arranged between the symmetrical vibration discs on the two sides. The feeding mechanism comprises a first chassis, a material conveying block is arranged on the first chassis in a sliding mode, an avoiding block is hinged to one end of the material conveying block, and tension springs are connected to the side wall of the material conveying block and the side wall of the avoiding block. The avoiding block can rotate by a certain angle under the action of pressure, so that the bolt is separated from the feeding mechanism, the bolt can be automatically reset under the action of the tension spring subsequently, the avoiding action does not need to be performed by the punching head assembly, and the whole material transfer action is simple and efficient.

Description

Technical Field

[0001] The invention belongs to the technical field of furniture, and in particular relates to a built-in bolt installation device for a furniture support frame. Background Art

[0002] When installing existing furniture panels, they must be connected and fixed with support frames to prevent the panels from deforming or moving after being compressed. A common connection method is bolt connection, which only requires tightening the bolts that penetrate the panels on the support frames. For example, support frames for sofas, chairs, and work tables are often connected with bolts.

[0003] This method requires that a special nut be placed in the support frame in advance. One end of the nut is fixed in the support frame, and the other end can also cooperate with the threaded part of the screw of the bolt, so as to connect the plate to the support frame.

[0004] In order to improve work efficiency, it is necessary to quickly position the bolts and the support frame during installation, and to be able to quickly punch the bolts into the support frame to reduce production costs. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a built-in bolt installation device for a furniture support frame, which at least partially solves the above problems.

[0006] The technical solution adopted by the present invention is as follows: A built-in bolt installation device for a furniture support frame proposed by the present invention includes a symmetrically arranged vibration plate, and the bolts are placed in batches into the vibration plate, so that the bolts are automatically directed, sorted and fed.

[0007] Furthermore, a reversing frame is provided at the discharge port of the vibration plate.

[0008] Furthermore, a feeding mechanism is provided at the lower end of the reversing frame, and the feeding mechanism is connected with the discharge port of the vibration plate through the reversing frame.

[0009] Furthermore, a punch head assembly perpendicular to the feeding mechanism is provided on the side wall of the vibration plate, and the punch head assembly can fix the bolt material transported by the feeding mechanism and punch the bolts to the end of the support frame.

[0010] Furthermore, an automatic feeding box is provided between the two symmetrical vibration plates, and the bottom end of the automatic feeding box can discharge the support frame and position the discharged support frame to the stamping position of the stamping head assembly.

[0011] Furthermore, the feeding mechanism comprises a chassis 1, the chassis 1 is arranged on the side wall of the vibration plate, and a material transfer block is slidably arranged on the chassis 1; Furthermore, in order to better convey the bolts, a half slot one is provided at one end of the material transfer block close to the punch head assembly, and the contour of the half slot one is adapted to the contour of the bolts; Furthermore, a telescopic cylinder 1 is fixed on the chassis 1, and the rod end of the telescopic cylinder 1 is connected to the side wall of the material transfer block; Furthermore, an avoidance block is hingedly connected to one end of the material transfer block away from the telescopic cylinder 1. In order to cooperate with the conveying bolt of the material transfer block, a half slot 2 cooperating with the half slot 1 is provided at the end of the avoidance block. Furthermore, a tension spring is connected to the side wall of the material transfer block and the side wall of the avoidance block, and the tension spring always pulls the avoidance block toward the upper wall of the material transfer block; Furthermore, in order to limit the direction of the tensile force of the tension spring and prevent the tension spring from pulling the avoidance block toward the lower wall of the material transfer block, a guide column is provided on the side wall of the material transfer block, and the guide column is in contact with the tension spring; Furthermore, when the avoidance block is located in the upper wall direction of chassis one, in order to avoid the influence of gravity on the angle of the avoidance block, a reset support plate is provided at the lower end of the avoidance block, and the lowest point of the reset support plate is in sliding contact with chassis one.

[0012] Furthermore, the punching head assembly includes chassis 2, telescopic cylinder 2 and telescopic cylinder 3. Chassis 2 is arranged on the side wall of the vibration plate in a direction perpendicular to chassis 1. Telescopic cylinder 2 is arranged on chassis 2. Telescopic cylinder 3 is slidably arranged on chassis 2. The rod end of telescopic cylinder 2 is connected to the side wall of telescopic cylinder 3 through a flange.

[0013] Furthermore, a punch rod is provided at the extended end of the telescopic cylinder three, and a plug is detachably mounted on the punch rod, and the shape of the plug can be inserted into the nut of the bolt.

[0014] Furthermore, a cylindrical groove is provided in the reversing frame, a slope groove is provided at the lower end of the cylindrical groove, and a sliding groove is provided through the slope side of the slope groove.

[0015] Furthermore, in order to make the bolt slide horizontally in the slope groove, a distance adjusting plate is slidably provided in the slope groove, and the distance adjusting plate is provided with a distance adjusting bolt that penetrates the side wall of the reversing frame.

[0016] Furthermore, a rotating shaft is rotatably provided at the bottom end of the automatic feeding box, one end of the rotating shaft is connected to a power mechanism, and a material wheel is arranged in an array on the rotating shaft; Furthermore, in order to fix the support frame, a circular array is provided on the material wheel, and the contour of the tube groove is adapted to the contour of the support frame. In order to prevent the support frame from leaking from the bottom of the automatic loading box, the bottom wall of the automatic loading box is provided with an inner support, and the edge of the material wheel can fit with the inner support and the side wall of the automatic loading box.

[0017] Furthermore, when the support frame follows the material wheel to rotate to the outside of the automatic feeding box, in order to fix the support frame and to facilitate punching of bolts, a material blocking frame is provided on the outside of the side wall of the automatic feeding box close to one end of the material wheel, and a slide plate is slidably provided on the material blocking frame, and a blocking spring is connected between the slide plate and the material blocking frame.

[0018] The beneficial effects achieved by the present invention are as follows: The feeding mechanism can receive the bolts and accurately position them, and then transport the bolts to the punch head assembly. At this time, the punch head assembly does not need to perform an avoidance action. The feeding mechanism only needs to be reset to the material receiving point. The avoidance block will rotate a certain angle under the action of pressure, so that the bolts will be disengaged from the feeding mechanism and remain on the punch head assembly. The avoidance block will then automatically reset under the action of the tension spring. The entire material handover action is simple and efficient, and there is no need to design additional avoidance actions or add corresponding avoidance equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the present invention; Figure 2 It is a structural schematic diagram of the feeding mechanism and the punch head assembly; Figure 3 for Figure 2 A magnified view of part I; Figure 4 It is the state diagram of the material transfer block and the avoidance block; Figure 5 Schematic diagram of the internal structure of the commutation frame; Figure 6 It is a partial cross-sectional view of the internal structure of the automatic feeding box.

[0020] Among them, 1. vibration plate, 2. feeding mechanism, 3. punch head assembly, 4. automatic feeding box, 5. chassis one, 6. telescopic cylinder one, 7. material transfer block, 8. tension spring, 9. avoidance block, 10. guide column, 11. half slot one, 12. half slot two, 13. reset support plate, 14. chassis two, 15. telescopic cylinder two, 16. telescopic cylinder three, 17. punch rod, 18. plug, 19. reversing frame, 20. distance adjusting plate, 21. distance adjusting bolt, 22. cylindrical groove, 23. slope groove, 24. slide groove, 25. rotating shaft, 26. material wheel, 27. pipe groove, 28. material blocking frame, 29. slide plate, 30. blocking spring, 31. inner support.

[0021] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0022] The technical solutions 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 only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0024] like Figure 1 As shown, the present invention proposes a built-in bolt installation device for a furniture support frame, including a symmetrically arranged vibration plate 1. Bolts are put into the vibration plate 1 in batches so that the bolts are automatically directional, sorted and fed. After arrangement, the nuts of the bolts face upward and the screws face downward. The symmetrically arranged vibration plates 1 can transport materials to the support frame from both sides, so that the bolts can be driven into both ends of the support frame later.

[0025] A reversing frame 19 is provided at the discharge port of the vibration plate 1, and the reversing frame 19 can adjust the direction of the screw rod and the nut to facilitate the subsequent installation of the bolt.

[0026] A feeding mechanism 2 is provided at the lower end of the reversing frame 19 , and the feeding mechanism 2 is connected to the discharge port of the vibration plate 1 through the reversing frame 19 . After the bolts inside the vibration plate 1 are positioned and arranged, the direction is adjusted by the reversing frame 19 and finally transported to the feeding mechanism 2 .

[0027] A punch head assembly 3 perpendicular to the feeding mechanism 2 is provided on the side wall of the vibration plate 1. The punch head assembly 3 can fix the bolt material conveyed by the feeding mechanism 2 and punch the bolt to the end of the support frame.

[0028] An automatic feeding box 4 is provided between the two symmetrical vibration plates 1. The automatic feeding box 4 is filled with a support frame. The support frame is a rod body. The inner cavity of the rod body is hollow so that the bolts can be pressed into the support frame. The bottom end of the automatic feeding box 4 can discharge the support frame and position the discharged support frame to the stamping position of the punch head assembly 3. The punch head assembly 3 then presses the bolts into both ends of the support frame.

[0029] like Figure 2-Figure 4 As shown, the feeding mechanism 2 includes a chassis 5, which is arranged on the side wall of the vibration plate 1. A material transfer block 7 is slidably provided on the chassis 5. The material transfer block 7 is used to receive the bolts dropped from the reversing frame 19 and transport the bolts to the receiving position of the punch head assembly 3.

[0030] In order to better convey the bolts, a half slot 11 is provided at one end of the transfer block 7 close to the punch head assembly 3, and the contour of the half slot 11 is adapted to the contour of the bolt. The transfer block 7 can be disassembled and replaced. After replacement, the contour of the half slot 11 on the transfer block 7 is also different to adapt to bolts of different shapes.

[0031] A telescopic cylinder 6 is fixed on the chassis 5, and the rod end of the telescopic cylinder 6 is connected to the side wall of the material transfer block 7. When the telescopic cylinder 6 is extended and retracted, the material transfer block 7 will be transported to different working positions. When the telescopic cylinder 6 is retracted, the material transfer block 7 is in the material receiving position, and the half-slot 11 on the material transfer block 7 is matched with the material discharge port of the reversing frame 19. When the telescopic cylinder 6 is extended, the material transfer block 7 is in the material discharge position, and the half-slot 11 on the material transfer block 7 is matched with the material receiving position of the punch head assembly 3, and at this time, the end of the material transfer block 7 protrudes from the side wall of the chassis 5.

[0032] An avoidance block 9 is hinged at one end of the material transfer block 7 away from the telescopic cylinder 6. In order to cooperate with the material transfer block 7 to transport the bolt, a half slot 12 cooperating with the half slot 11 is provided at the end of the avoidance block 9. The half slot 11 and the half slot 2 12 can fix the bolt when they cooperate. When the avoidance block 9 moves to the outside of the side wall of the chassis 5 following the material transfer block 7, if the avoidance block 9 is subjected to pressure, the avoidance block 9 will rotate a certain angle so that the highest point of the avoidance block 9 is lower than the lowest point of the upper half slot 11 of the material transfer block 7. At this time, the bolt can be moved out of the half slot 11 of the material transfer block 7 relatively horizontally.

[0033] When the avoidance block 9 moves to the outside of the side wall of the chassis 5, in order to prevent the avoidance block 9 from rotating in advance under the action of gravity, a tension spring 8 is connected to the side wall of the transfer block 7 and the side wall of the avoidance block 9, and the tension spring 8 always pulls the avoidance block 9 toward the upper wall of the transfer block 7.

[0034] In order to limit the direction of the tensile force of the tension spring 8 and prevent the tension spring 8 from pulling the avoidance block 9 toward the lower wall of the material transfer block 7, a guide column 10 is provided on the side wall of the material transfer block 7, and the guide column 10 is in contact with the tension spring 8.

[0035] When the avoidance block 9 is located at the upper wall direction of the chassis 1 5 , in order to avoid the influence of gravity on the angle of the avoidance block 9 , a reset support plate 13 is provided at the lower end of the avoidance block 9 , and the lowest point of the reset support plate 13 is in sliding contact with the chassis 1 5 .

[0036] like Figure 2 and Figure 3As shown, the punch head assembly 3 includes a chassis 2 14, a telescopic cylinder 2 15 and a telescopic cylinder 3 16. The chassis 2 14 is arranged on the side wall of the vibration plate 1 in a direction perpendicular to the chassis 1 5. The telescopic cylinder 2 15 is arranged on the chassis 2 14. The telescopic cylinder 3 16 is slidably arranged on the chassis 2 14. The rod end of the telescopic cylinder 2 15 is connected to the side wall of the telescopic cylinder 3 16 through a flange. When the telescopic cylinder 2 15 is extended or retracted, it can drive the telescopic cylinder 3 16 to slide back and forth.

[0037] The extended end of the telescopic cylinder three 16 is provided with a punch rod 17, and a plug 18 is detachably mounted on the punch rod 17. The shape of the plug 18 can be inserted into the nut of the bolt, and the plug 18 can be replaced according to the specifications of the bolt. When the telescopic cylinder three 16 is extended, the plug 18 can be inserted into the position where the half slot 11 and the half slot 2 12 are located, and the internal bolts are fixed. Then the telescopic cylinder two 15 is extended, driving the telescopic cylinder three 16 and the plug 18 on the telescopic rod three and the bolts to move toward the end of the support frame, and finally press the bolts into the support frame, and then the telescopic cylinder three 16 and the telescopic cylinder two 15 are both retracted back to the initial point. At this time, the punch rod 17 and the plug 18 no longer overlap with the position of the half slot 11 and the half slot 2 12, so as to facilitate the next feeding.

[0038] like Figure 5 As shown, a cylindrical groove 22 is provided in the reversing frame 19, and a slope groove 23 is provided at the lower end of the cylindrical groove 22. A slide groove 24 is penetrated on the slope side of the slope groove 23. After the bolt reaches the slope groove 23, the nut tilts to one side under the action of gravity, so that the screw rod is inserted into the slide groove 24, and the nut slides into the slope groove 23.

[0039] In order to make the bolt slide horizontally in the slope groove 23, a distance adjusting plate 20 is slidably provided in the slope groove 23, and a distance adjusting bolt 21 is provided on the distance adjusting plate 20 and passes through the side wall of the reversing frame 19. By rotating the distance adjusting bolt 21, the distance between the distance adjusting plate 20 and the side wall of the slide groove 24 can be changed. This distance is adapted to the height of the nut so that the upper and lower side walls of the nut are in contact with the side walls of the distance adjusting plate 20 and the side walls of the slide groove 24, thereby preventing the bolt from tilting or rolling due to the imbalance of the nut and the screw during the falling process.

[0040] like Figure 6 As shown, a rotating shaft 25 is rotatably provided at the inner bottom end of the automatic feeding box 4, one end of the rotating shaft 25 is connected to a power mechanism (not shown in the drawings), and a material wheel 26 is arranged in an array on the rotating shaft 25, and the power mechanism drives the material wheel 26 to rotate through the rotating shaft 25.

[0041] In order to fix the support frame, a circular array of tube grooves 27 is provided on the material wheel 26, and the contour of the tube grooves 27 is adapted to the contour of the support frame. In order to prevent the support frame from leaking from the bottom of the automatic loading box 4, the bottom wall of the automatic loading box 4 is provided with an inner support 31, and the edge of the material wheel 26 can fit with the inner support 31 and the side wall of the automatic loading box 4.

[0042] When the support frame follows the material wheel 26 to rotate to the outside of the automatic feeding box 4, in order to fix the support frame and to facilitate the punching of bolts, a material blocking frame 28 is provided on the side wall of the automatic feeding box 4 close to one end of the material wheel 26. A slide plate 29 is slidably provided on the material blocking frame 28, and a blocking spring 30 is connected between the slide plate 29 and the material blocking frame 28. The slide plate 29 and the blocking spring 30 can cooperate with support frames of different sizes to prevent the support frame from rolling down from the pipe groove 27 of the material wheel 26.

[0043] During the specific operation, the bolts are placed in the vibration plate 1, the support frame is placed in the automatic feeding box 4, the vibration plate 1 is started, and the bolts are positioned and arranged in sequence with the nuts facing upward and the screws facing downward.

[0044] After the bolt enters the reversing frame 19, the bolt falls into the cylindrical groove 22 under the action of gravity, and continues to fall into the slope groove 23. At this time, the nut is tilted in the direction of the vertical side wall of the slope groove 23 and fits with the side wall of the distance adjusting plate 20. At this time, the upper and lower side walls of the nut are in contact with the side walls of the distance adjusting plate 20 and the side walls of the slide groove 24 respectively. If the side walls of the nut are not in contact with the two side walls, the distance adjusting bolt 21 can be rotated to change the distance from the side wall of the distance adjusting plate 20 to the side wall of the slide groove 24 until the nut and the screw of the bolt are adjusted to a horizontal posture.

[0045] The bolt continues to fall and falls into the half slot 11 and the half slot 2 12 on the material transfer block 7 and the avoidance block 9 and is fixed. The telescopic cylinder extends, and the material transfer block 7 drives the avoidance block 9 to extend forward until the avoidance block 9 protrudes from the outside of the chassis 15. At this time, another bolt in the reversing frame 19 fits with the upper wall of the material transfer block 7, so that the subsequent material transfer block 7 can fall into the half slot 11 after retracting.

[0046] When the avoidance block 9 protrudes out of the outer side of the chassis 5, the avoidance block 9 still maintains a horizontal state under the action of the tension spring 8, and the telescopic cylinder 3 16 is started. The telescopic cylinder 3 16 drives the plug 18 on the punch rod 17 to extend in the direction of the bolt and inserts the plug 18 into the nut. Then the telescopic cylinder 6 retracts, and the transfer block 7 moves toward the reversing frame 19. At this time, the bolts in the half-slot 11 and the half-slot 2 12 are fixed by the plug 18 and cannot move. The bolt applies pressure to the avoidance block 9 through the half-slot 2 12, and the avoidance block 9 bends downward and disengages from the bolt. When the bolt is completely disengaged, the avoidance block 9 resumes a horizontal state under the action of the tension spring 8, and moves to the lower end of the reversing frame 19 with the transfer block 7 for the next round of operation.

[0047] When the bolts on the plug 18 are separated from the avoidance block 9, the telescopic cylinder 2 15 is started, and the telescopic cylinder 2 15 drives the telescopic cylinder 3 16 to move, so that the bolts on the telescopic cylinder 3 16 move toward the automatic feeding box 4.

[0048] During the process of conveying bolts, the rotating shaft 25 in the automatic feeding box 4 rotates under the action of the power mechanism, and the material wheel 26 rotates accordingly. During the rotation of the material wheel 26, the support frames fall into the pipe grooves 27 on the material wheel 26 one by one, and rotate to the outside of the automatic feeding box 4 with the material wheel 26. When the support frame rotates to the outside of the automatic feeding box 4, the slide plate 29 squeezes the support frame under the action of the blocking spring 30, and the support frame remains fixed under the joint clamping of the slide plate 29 and the material wheel 26.

[0049] The telescopic cylinders 16 on both sides press the bolts into the support frame from both ends, thereby completing the installation of the built-in bolts. After the installation is completed, the pipe groove 27 continues to rotate, the support frame rotates downward and separates from the slide plate 29, and the support frame falls under the action of gravity, thus completing the entire operation process.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A device for installing built-in bolts in a furniture support frame, comprising a symmetrically arranged vibration plate (1), characterized in that: Also includes: A feeding mechanism (2) is connected to a material outlet of a vibration plate (1) via a reversing frame (19), comprising a chassis (5), the chassis (5) being arranged on a side wall of the vibration plate (1), a material transfer block (7) being slidably arranged on the chassis (5), a telescopic cylinder (6) being fixed on the chassis (5), a rod end of the telescopic cylinder (6) being connected to a side wall of the material transfer block (7), an avoidance block (9) being hingedly connected to one end of the material transfer block (7) away from the telescopic cylinder (6), a tension spring (8) being connected to the side wall of the material transfer block (7) and the side wall of the avoidance block (9), a half notch (11) being arranged at an end of the material transfer block (7), and a half notch (12) being arranged at an end of the avoidance block (9) to cooperate with the half notch (11); A punch head assembly (3) is arranged on the side wall of the vibration plate (1) in a direction perpendicular to the feeding mechanism (2) and is used to punch the bolts conveyed by the feeding mechanism (2) into the support frame; The automatic loading box (4) is arranged between the two vibration plates (1) and is used to position the support frame at the punching position of the punch head assembly (3).

2. The built-in bolt installation device for furniture support frame according to claim 1, characterized in that: A guide column (10) is provided on the side wall of the material transfer block (7), the guide column (10) contacts the tension spring (8) to limit the direction of the tensile force, and a reset support plate (13) is provided at the lower end of the avoidance block (9).

3. The built-in bolt installation device for furniture support frame according to claim 1, characterized in that: The punch head assembly (3) comprises a second chassis (14), a second telescopic cylinder (15) and a third telescopic cylinder (16); the second chassis (14) is arranged on the side wall of the vibration plate (1) in a direction perpendicular to the first chassis (5); the second telescopic cylinder (15) is arranged on the second chassis (14); the third telescopic cylinder (16) is slidably arranged on the second chassis (14); and the rod end of the second telescopic cylinder (15) is connected to the side wall of the third telescopic cylinder (16) via a flange.

4. The built-in bolt installation device for furniture support frame according to claim 3, characterized in that: The extended end of the telescopic cylinder (16) is provided with a punch rod (17), on which a plug (18) is detachably mounted, and the plug (18) is shaped so as to be inserted into the nut of a bolt.

5. The built-in bolt installation device for furniture support frame according to claim 1, characterized in that: A cylindrical groove (22) is provided in the reversing frame (19), a slope groove (23) is provided at the lower end of the cylindrical groove (22), and a slide groove (24) is provided through the slope side of the slope groove (23).

6. The built-in bolt installation device for furniture support frame according to claim 5, characterized in that: A distance adjusting plate (20) is slidably disposed in the gradient groove (23), and a distance adjusting bolt (21) penetrating the side wall of the reversing frame (19) is disposed on the distance adjusting plate (20).

7. The built-in bolt installation device for furniture support frame according to claim 1, characterized in that: A rotating shaft (25) is rotatably provided at the bottom end of the automatic feeding box (4), one end of the rotating shaft (25) is connected to a power mechanism, and a material wheel (26) is arranged in an array on the rotating shaft (25).

8. The built-in bolt installation device for furniture support frame according to claim 7, characterized in that: The material wheel (26) is provided with tube grooves (27) in a circumferential array, and the contour of the tube grooves (27) is adapted to the contour of the support frame.

9. The built-in bolt installation device for furniture support frame according to claim 8, characterized in that: A material blocking frame (28) is provided on the side wall of the automatic feeding box (4) near one end of the material wheel (26), a slide plate (29) is slidably provided on the material blocking frame (28), and a material blocking spring (30) is connected between the slide plate (29) and the material blocking frame (28).

10. The built-in bolt installation device for furniture support frame according to claim 9, characterized in that: The bottom wall of the automatic material loading box (4) is provided with an inner support (31), and the edge of the material wheel (26) can fit with the inner support (31) and the side wall of the automatic material loading box (4).

Images