Furniture woodworking board bending process and equipment

Abstract

The present invention belongs to the technical field of furniture manufacturing, and in particular, relates to a furniture woodworking board bending equipment, including a frame, on which a bending mold, a bending mechanism and a holding device are arranged. The bending mechanism includes: a bending platform, a bending turning rod and a bending arm. There are two bending turning rods in total and they are respectively arranged on both sides of the middle bending platform; there are two bending arms in total and they correspond to the bottom of the side bending platforms respectively, the side bending platforms and the corresponding bending arms are hinged by a hinge rod, one end of the bending arm is rotatably sleeved on the bending turning rod, and the bending arm is hinged to the piston rod of the bending cylinder arranged on the machine base; the wood board is clamped between the bending mold and the bending platform; each wood board corresponds to a holding device, and the holding device is used to keep the bent wood board in a bent state. The present invention can keep the bent wood board in a bent state, prevent the wood board from rebounding and resetting during storage, and reduce the scrap rate or bending rework rate of the wood board.

Description

Technical Field

[0001] The invention belongs to the technical field of furniture manufacturing, and in particular relates to a furniture woodworking board bending process and equipment. Background Art

[0002] The board bending device is a device used to bend and shape the board. It constrains and squeezes the board through a mold so that the board is shaped into a predetermined shape to meet the use requirements of the board. The use of the board bending device replaces the manual bending of the board, greatly improves the efficiency of the board bending operation, and reduces the production cost of board processing. In actual production, a solid wood bending machine such as the one in patent number CN209851152U is usually used to bend woodworking boards.

[0003] However, after being bent by a solid wood bending machine, the current wood is prone to rebound and reset during long-term storage, so that the required bending shape cannot be achieved, so this problem needs to be solved. Summary of the invention

[0004] The purpose of the present invention is to provide a furniture wood panel bending process and equipment in view of the above-mentioned technical problems, so as to ensure that the wood panels can be used and reduce the scrap rate or bending rework rate of the wood panels.

[0005] In view of this, the present invention provides a furniture woodworking board bending device, including a frame, on which are arranged:

[0006] A bending die, wherein the shape of the working surface of the bending die is the same as the shape into which the wood needs to be bent;

[0007] Bending mechanism, the bending mechanism comprises:

[0008] A bending platform, the bending platform is used to place the wood board, the bending platform includes a middle bending platform and a side bending platform, the middle bending platform is connected to a bending cylinder arranged on the frame, and there are two side bending platforms, which are arranged on both sides of the middle bending platform respectively, and each side bending platform is provided with a clamping mechanism for fixing the end of the wood board;

[0009] Bending rotating rods, two of which are provided and are respectively arranged on both sides of the middle bending platform;

[0010] Bending arms, wherein two bending arms are provided and correspond to the lower part of the side bending platforms respectively, the side bending platforms are hinged to the corresponding bending arms through hinged rods, one end of the bending arm is rotatably sleeved on the bending rotating rod, and the bending arm is hinged to the piston rod of the bending oil cylinder provided on the machine base;

[0011] The wood board is clamped between the bending die and the bending platform, and the bending oil cylinder and the bending air cylinder are used to rotate the bending platform to make the wood board bend and deform toward the bending die;

[0012] A holding device, each wood board corresponds to a holding device, and the holding device is used to keep the bent wood board in a bent state.

[0013] In the present technical scheme, a holding device is placed on a bending platform, and then the wood board to be bent is placed on the holding device, and the two ends of the wood board are fixed by a clamping mechanism, and the bending cylinder is started to make the middle bending platform lift up the holding device and the wood board to press against the lower edge of the bending mold, and then the bending oil cylinder is started to make the bending arm push the side bending platform to carry the holding device and the wood board to bend and press against the bending mold to achieve the purpose of bending the wood board. By setting up a holding device, the bent wood board can be kept in a bent state, and the bent wood board can be prevented from rebounding and resetting during long-term storage, thereby ensuring that the wood board can be used and reducing the scrap rate or bending rework rate of the wood board.

[0014] Furthermore, the holding device comprises:

[0015] A holding soft iron sheet, wherein the holding soft iron sheet can be bent and is arranged on a side of the wood plate away from the bending mold;

[0016] Extension blocks, which have two pieces, are respectively fixedly connected to the two ends of the soft iron sheet and are perpendicular to the soft iron sheet, and the extension blocks are provided with retaining holes;

[0017] A retaining rod is provided with an insertion portion which can be inserted into the two retaining holes respectively. After the soft iron sheet is bent into place, the distance between the two retaining holes is equal to the distance between the two insertion portions. An anti-slip structure is provided on the insertion portion, which can prevent the insertion portion from slipping out of the retaining hole.

[0018] In the present technical solution, after the bending of the wood board is completed and the soft iron sheet is also bent into place synchronously, the two insertion parts of the retaining rod are respectively inserted into the retaining holes of the two extension blocks, so that the bending state of the soft iron sheet can be kept fixed, that is, the bending state of the wood board can be maintained to prevent rebound.

[0019] Furthermore, the insertion part is a cylindrical pin, the diameter of the cylindrical pin is less than or equal to the diameter of the retaining hole, and the anti-slip structure includes a conical elastic part arranged along the outer circumference of the cylindrical pin. When the elastic part is in a natural state, the diameter at the largest point is larger than the diameter of the retaining hole, and the diameter at the smallest point is smaller than the diameter of the retaining hole. The cone apex of the elastic part is arranged at the insertion end of the insertion part, and the diameter is smaller than the diameter of the retaining hole when the part is in a compressed state.

[0020] In the present technical solution, the retaining rod is moved closer to the extension block so that the insertion part is inserted into the retaining hole. During the insertion process, the elastic part is compressed by the retaining hole. When the elastic part passes through the retaining hole, the elastic part rebounds and resets, so that the diameter of the elastic part at the largest point is larger than the diameter of the retaining hole, thereby forming a state that prevents the insertion part from escaping from the retaining hole.

[0021] Furthermore, the bending device is also provided with an automatic insertion device for inserting the insertion portion of the retaining rod into the retaining hole, the automatic insertion device includes an automatic insertion seat, and the automatic insertion seat is provided with:

[0022] An insertion shaft, the insertion shaft being rotatably disposed on the automatic insertion seat and connected to a rotation power source so as to be able to rotate in a circle;

[0023] A rotating groove, the rotating groove comprises a vertical groove and an arc-shaped rotating groove, wherein the arc-shaped rotating groove is arranged on the side of the vertical groove and communicates with the vertical groove;

[0024] A rotating plate, wherein sliding blocks are arranged at both ends of the rotating plate, and a first sliding shaft and a second sliding shaft are arranged on the sliding blocks, the first sliding shaft is always slidably arranged in the vertical groove, and the second sliding shaft can slide along the vertical groove and slide into the arc-shaped rotating groove, and a clamping device for clamping the retaining rod is also arranged on the rotating plate;

[0025] A first connecting rod, wherein one end of the first connecting rod is fixedly connected to the insertion shaft, and the other end is rotatably connected to the second connecting rod, and the other end of the second connecting rod is connected to the second sliding shaft of the sliding block.

[0026] In the present technical solution, when insertion is not required, the rotating plate is tilted upward to facilitate clamping the retaining rod on the clamping device. At this time, the second sliding shaft is located in the arc-shaped rotating groove. When the insertion portion of the retaining rod needs to be inserted into the retaining hole, the rotating power source rotates the insertion rotating shaft counterclockwise, and the insertion rotating shaft will drive the first connecting rod to rotate around the axis of the insertion rotating shaft, so that the second connecting rod drives the sliding block to slide and the second sliding shaft slides into the vertical groove. The rotating plate also rotates to a horizontal state. Both the first sliding shaft and the second sliding shaft slide in the vertical groove so that the rotating plate brings the retaining rod close to the retaining device so that the insertion portion is inserted into the retaining hole.

[0027] Furthermore, the automatic insertion device is also provided with a buffer structure, and the buffer structure comprises:

[0028] A buffer block, the buffer block is slidably arranged below the vertical slot along the length direction of the vertical slot;

[0029] A buffer spring, one end of which is connected to the bottom of the automatic insertion seat, and the other end of which is connected to the lower end of the buffer block. The buffer spring always has a movement tendency to push the buffer block to slide upward.

[0030] In this technical solution, when the rotating plate slides downward, the buffer block can reduce the speed of the rotating plate sliding downward under the action of the buffer spring, preventing the insertion part from being inserted into the retaining hole at too fast a speed and damaging the insertion part, thereby playing a role in protecting the retaining device.

[0031] Furthermore, each side bending platform is provided with an auxiliary die sticking device, which is used to increase the consistency between the bending shape of the wood board and the shape of the bending mold, and the auxiliary die sticking device includes:

[0032] Auxiliary die sticking chute, the auxiliary die sticking chute is arranged on the side of the side bending platform, and the auxiliary die sticking chute is arc-shaped and matches the shape of both sides of the bending die;

[0033] An auxiliary mold sticking cylinder, wherein the auxiliary mold sticking cylinder is arranged inside the side bending platform;

[0034] An auxiliary die-sticking rotating rod, one end of which is rotatably connected to the piston rod of the auxiliary die-sticking cylinder, and the other end of which is slidably arranged in the auxiliary die-sticking sliding groove, and the auxiliary die-sticking rotating rod is also connected to the die-sticking wheel;

[0035] In the present technical solution, when bending has not started, the auxiliary mold-sticking device is entirely located below the side bending platform surface. After the side bending platform surface is rotated into place, the auxiliary mold-sticking cylinder is started to extend the piston rod, and the auxiliary mold-sticking rotating rod moves along the auxiliary mold-sticking slide groove to make the mold-sticking wheel move along the contour of the bending mold, so that the wood board can be pressed against the bending mold, thereby improving the conformity of the wood board with the bending shape of the bending mold.

[0036] Furthermore, the clamping mechanism comprises:

[0037] A clamping seat, each side bending platform is fixedly provided with the clamping seat, and a clamping block is slidably provided on the clamping seat;

[0038] A clamping cylinder is fixedly arranged on each side bending platform, a piston rod of the clamping cylinder points to another side bending platform, and the piston rod of the clamping cylinder is fixedly connected to the clamping block.

[0039] In this technical solution, after the wood board is placed on the bending platform, the piston rods of the two clamping cylinders are controlled to extend so that the piston rods push the clamping blocks to slide toward the ends of the wood board, thereby clamping the wood board.

[0040] Furthermore, the bending platform is provided with a plurality of clamping holes for fixing the clamping seat along the length direction of the bending platform.

[0041] Furthermore, the bending arm and the bending platform are both provided with a plurality of hinge holes for connecting the hinge rods.

[0042] Furthermore, the furniture woodworking board bending process includes the following steps:

[0043] S1, preheating and softening treatment: preheating and softening the wood board by steam;

[0044] S2, Bending: Place the holding device on the bending platform, and then place the preheated and softened wood board to be bent on the holding device, and fix the two ends of the wood board through the clamping mechanism, start the bending cylinder to make the middle bending platform lift the holding device and the wood board close to the lower edge of the bending mold, and then start the bending cylinder to make the bending arm push the side bending platform to bend the holding device and the wood board close to the bending mold to achieve the purpose of bending the wood board;

[0045] S3, fix the locking and holding device: the insertion shaft is rotated by rotating the power source, and the insertion shaft drives the first connecting rod to rotate around the axis of the insertion shaft, so that the second connecting rod drives the sliding block to slide so that the second sliding shaft slides into the vertical groove, and the rotating plate also rotates to a horizontal state, and the first sliding shaft and the second sliding shaft both slide in the vertical groove so that the rotating plate brings the holding rod close to the holding device so that the insertion part is inserted into the holding hole;

[0046] S4, auxiliary die sticking: after the side bending platform surface is rotated into place, the auxiliary die sticking cylinder is started to extend the piston rod, and the auxiliary die sticking rotating rod moves along the auxiliary die sticking slide groove to make the die sticking wheel move along the contour of the bending mold, so that the wood board can be pressed against the bending mold, thereby improving the conformity of the wood board with the bending shape of the bending mold.

[0047] The beneficial effects of the present invention are:

[0048] 1. By setting a holding device, the bent wood board can be kept in a bent state, which can prevent the bent wood board from rebounding and resetting during long-term storage, ensuring that the wood board can be used and reducing the scrap rate or bending rework rate of the wood board.

[0049] 2. The rotating plate is tilted upward to facilitate clamping the retaining rod on the clamping device. At this time, the second sliding shaft is located in the arc-shaped rotating groove. When the insertion part of the retaining rod needs to be inserted into the retaining hole, the rotating power source rotates counterclockwise to rotate the insertion rotating shaft. The insertion rotating shaft will drive the first connecting rod to rotate around the axis of the insertion rotating shaft, so that the second connecting rod drives the sliding block to slide and the second sliding shaft slides into the vertical groove. The rotating plate also rotates to a horizontal state. Both the first sliding shaft and the second sliding shaft slide in the vertical groove so that the rotating plate brings the retaining rod close to the retaining device so that the insertion part is inserted into the retaining hole.

[0050] 3. The buffer block can reduce the speed at which the rotating plate slides downward under the action of the buffer spring, preventing the insertion part from being inserted into the retaining hole at an excessively fast speed and damaging the insertion part, thereby playing a role in protecting the retaining device.

[0051] 4. The auxiliary die-sticking device can press the wood board to the bending die, which improves the conformity between the wood board and the bending shape of the bending die. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 is a front view of the bending device without bending;

[0053] Figure 2 It is a front view of the bending device after bending;

[0054] Figure 3 is a perspective view of the retaining device of the present invention;

[0055] Figure 4 is a side view of the automatic insertion device;

[0056] Figure 5 is a perspective view of an automatic insertion device;

[0057] Figure 6 yes Figure 1 A partial enlarged view in FIG.

[0058] Figure 7 yes Figure 2 A partial enlarged view of B;

[0059] The symbols in the figure are:

[0060] 1. Frame; 2. Bending die; 3. Holding device; 5. Bending rod; 6. Bending arm; 7. Middle bending platform; 8. Side bending platform; 9. Bending cylinder; 10. Clamping mechanism; 11. Articulated rod; 12. Bending cylinder; 13. Wood board; 14. Holding soft iron sheet; 15. Extension block; 16. Holding rod; 17. Holding hole; 18. Insertion part; 19. Elastic part; 20. Automatic insertion device; 21. Automatic insertion seat; 22. Insertion shaft; 23. Vertical slot; 24, rotating plate; 25, first connecting rod; 26, arc-shaped rotating slot; 27, sliding block; 43, first sliding axis; 28, second sliding axis; 29, clamping device; 30, second connecting rod; 31, buffer block; 32, buffer spring; 33, auxiliary mold sticking device; 34, auxiliary mold sticking slide slot; 35, auxiliary mold sticking cylinder; 36, mold sticking wheel; 37, auxiliary mold sticking rotating rod; 38, clamping seat; 39, clamping cylinder; 40, clamping block; 41, clamping hole; 42, hinge hole. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0062] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0063] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0064] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0065] It should be noted that, in the present application, the terms "comprise", "include" or any other variant 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. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0066] Embodiment 1:

[0067] like Figure 1-2 As shown, a furniture woodworking board bending equipment includes a frame 1, on which a bending mold 2 and a bending mechanism holding device 3 are arranged. The shape of the working surface of the bending mold 2 is the same as the shape into which the wood needs to be bent; the bending mechanism includes a bending platform, a bending turning rod 5 and a bending arm 6. The bending platform is used to place a wood board 13, and the bending platform includes a middle bending platform 7 and a side bending platform 8. The middle bending platform 7 is connected to a bending cylinder 9 arranged on the frame 1. There are two side bending platforms 8, which are respectively arranged on both sides of the middle bending platform 7. Each side bending platform 8 is provided with a clamping mechanism 10 for fixing the end of the wooden board; there are two bending turning rods 5, which are respectively arranged on both sides of the middle bending platform 7; there are two bending arms 6, which correspond to the side bending platforms 8 respectively. Below, the side bending platform 8 is hinged to the corresponding bending arm 6 through a hinge rod 11, one end of the bending arm 6 is rotatably mounted on the bending rotating rod 5, and the bending arm 6 is hinged to the piston rod of the bending cylinder 12 arranged on the machine base; the wood board 13 is clamped between the bending mold 2 and the bending platform, and the bending cylinder 12 and the bending cylinder 9 are used to rotate the bending platform to make the wood board 13 bend and deform toward the bending mold 2; each wood board 13 corresponds to one of the holding devices 3, and the holding device 3 is used to keep the bent wood board 13 in a bent state.

[0068] Place the holding device 3 on the bending platform, and then place the wood board 13 to be bent on the holding device 3, fix the two ends of the wood board by the clamping mechanism 10, start the bending cylinder 9 to make the middle bending platform 7 lift the holding device 3 and the wood board 13 close to the lower edge of the bending mold 2, and then start the bending cylinder 12 to make the bending arm 6 push the side bending platform 8 to bend the holding device 3 and the wood board 13 close to the bending mold 2 to achieve the purpose of bending the wood board 13. By setting the holding device 3, the bent wood board 13 can be kept in a bent state, and the bent wood board 13 can be prevented from rebounding and resetting during long-term storage, thereby ensuring that the wood board 13 can be used and reducing the scrap rate or bending rework rate of the wood board 13.

[0069] Embodiment 2:

[0070] like Figure 1-3 As shown, the holding device 3 includes a holding soft iron sheet 14, an extension block 15 and a holding rod 16. The holding soft iron sheet 14 can be bent, and the holding soft iron sheet 14 is arranged on the side of the wood board 13 away from the bending mold 2; the extension block 15 has two pieces, which are respectively fixedly connected to the two ends of the holding soft iron sheet 14 and are perpendicular to the holding soft iron sheet 14, and a holding hole 17 is opened on the extension block 15; the holding rod 16 is provided with an insertion portion 18 which can be inserted into the two holding holes 17 respectively, and after the holding soft iron sheet 14 is bent in place, the distance between the two holding holes 17 is equal to the distance between the two insertion portions 18, and the insertion portion 18 is provided with an anti-slip structure, which can prevent the insertion portion 18 from slipping out of the holding hole 17. After the wood board 13 is bent and the soft iron sheet 14 is also bent into place synchronously, the two insertion parts 18 of the retaining rod 16 are respectively inserted into the retaining holes 17 of the two extension blocks 15, so that the bending state of the soft iron sheet 14 can be kept fixed, that is, the bending state of the wood board 13 can be maintained to prevent rebound.

[0071] Embodiment 3:

[0072] like Figure 3 As shown, the insertion part 18 is a cylindrical pin, the diameter of the cylindrical pin is less than or equal to the diameter of the retaining hole 17, and the anti-slip structure includes a conical elastic part 19 arranged along the outer circumference of the cylindrical pin. The diameter of the elastic part 19 at the maximum point is greater than the diameter of the retaining hole 17 in the natural state, and the diameter at the minimum point is less than the diameter of the retaining hole 17. The cone vertex of the elastic part 19 is arranged at the insertion end of the insertion part 18, and the diameter is less than the diameter of the retaining hole 17 when the elastic part is in a compressed state. The retaining rod 16 is moved closer to the extension block 15 to insert the insertion part 18 into the retaining hole 17. During the insertion process, the elastic part 19 is compressed by the retaining hole 17. When the elastic part 19 passes through the retaining hole 17, the elastic part 19 rebounds and resets, so that the diameter of the elastic part 19 at the maximum point is greater than the diameter of the retaining hole 17, thereby forming a state in which the insertion part 18 is prevented from slipping out of the retaining hole 17.

[0073] Embodiment 4:

[0074] like Figure 1 and Figure 4-5 As shown, the bending equipment is also provided with an automatic insertion device 20 for inserting the insertion portion 18 of the retaining rod 16 into the retaining hole 17, and the automatic insertion device 20 includes an automatic insertion seat 21, and the automatic insertion seat 21 is provided with an insertion shaft 22, a rotating groove, a rotating plate 24 and a first connecting rod 25. The insertion shaft 22 is rotatably arranged on the automatic insertion seat 21 and is connected to the rotation power source and can rotate in a circle; the rotation groove includes a vertical groove 23 and an arc-shaped rotation groove 26, and the arc-shaped rotation groove 26 is arranged on the side of the vertical groove 23 and is connected to the vertical groove 23; sliding blocks 27 are arranged at both ends of the rotating plate 24, and the first sliding shaft 43 and the second sliding shaft 28 are arranged on the upper and lower parts of the sliding block 27. The first sliding shaft 43 is always slidably arranged in the vertical groove 23, and the second sliding shaft 28 can slide along the vertical groove 23 and slide into the arc-shaped rotation groove 26. The rotating plate 24 is also provided with a clamping device 29 for clamping the retaining rod 16; one end of the first connecting rod 25 is fixedly connected to the insertion shaft 22, and the other end is rotatably connected to the second connecting rod 30, and the other end of the second connecting rod 30 is connected to the second sliding shaft 28 of the sliding block 27. When insertion is not required, as Figure 4 As shown, the rotating plate 24 is tilted upward, which is convenient for clamping the holding rod 16 to the clamping device 29. At this time, the second sliding shaft 28 is located in the arc-shaped rotating groove 26. When the insertion portion 18 of the holding rod 16 needs to be inserted into the holding hole 17, the rotating power source rotates the insertion rotating shaft 22 counterclockwise, and the insertion rotating shaft 22 drives the first connecting rod 25 to rotate around the axis of the insertion rotating shaft 22, so that the second connecting rod 30 drives the sliding block 27 to slide and the second sliding shaft 28 slides into the vertical groove 23, and the rotating plate 24 also rotates to a horizontal state, and the first sliding shaft 43 and the second sliding shaft 28 both slide in the vertical groove 23, as shown in FIG. Figure 5 As shown, the rotating plate 24 with the holding rod 16 is brought close to the holding device 3 so that the insertion portion 18 is inserted into the holding hole 17 .

[0075] Embodiment 5:

[0076] like Figure 5 As shown, the automatic insertion device 20 is also provided with a buffer structure, which includes a buffer block 31 and a buffer spring 32. The buffer block 31 is slidably arranged below the vertical slot 23 along the length direction of the vertical slot 23; one end of the buffer spring 32 is connected to the bottom of the automatic insertion seat 21, and the other end is connected to the lower end of the buffer block 31. The buffer spring 32 always has a movement tendency to push the buffer block 31 to slide upward. When the rotating plate 24 slides downward, the buffer block 31 can reduce the speed of the rotating plate 24 sliding downward under the action of the buffer spring 32, preventing the insertion portion 18 from being inserted into the retaining hole 17 at an excessively fast speed and damaging the insertion portion 18, thereby protecting the retaining device 3.

[0077] Embodiment 5:

[0078] like Figure 1-2 and Figure 6-7 As shown, each side bending platform 8 is provided with an auxiliary die-sticking device 33, and the auxiliary die-sticking device 33 is used to increase the consistency between the bending shape of the wood board 13 and the shape of the bending mold 2. The auxiliary die-sticking device 33 includes an auxiliary die-sticking slide 34, an auxiliary die-sticking cylinder 35 and an auxiliary die-sticking rotating rod 37. The auxiliary die-sticking slide 34 is opened on the side of the side bending platform 8, and the auxiliary die-sticking slide 34 is arc-shaped and matches the shape of both sides of the bending mold 2; the auxiliary die-sticking cylinder 35 is arranged inside the side bending platform 8; one end of the auxiliary die-sticking rotating rod 37 is rotatably connected to the piston rod of the above-mentioned auxiliary die-sticking cylinder 35, and the other end is slidably arranged in the auxiliary die-sticking slide 34, and the auxiliary die-sticking rotating rod 37 is also connected to the die-sticking wheel 36; when bending has not started, as shown in FIG. Figure 6 The auxiliary die sticking device 33 is located below the side bending platform 8 as a whole. After the side bending platform 8 is rotated into place, the auxiliary die sticking cylinder 35 is started to extend the piston rod, and the auxiliary die sticking rotating rod 37 moves along the auxiliary die sticking slide groove 34 to make the die sticking wheel 36 move along the contour of the bending mold 2. Figure 7 , the wood board 13 can be pressed toward the bending die 2, thereby improving the conformity of the bending shape of the wood board 13 and the bending die 2.

[0079] Embodiment 6:

[0080] like Figure 1 As shown, the clamping mechanism 10 includes a clamping seat 38 and a clamping cylinder 39. The clamping seat 38 is fixedly arranged on each side bending platform 8, and a clamping block 40 is slidably arranged on the clamping seat 38; a clamping cylinder 39 is fixedly arranged on each side bending platform 8, and the piston rod of the clamping cylinder 39 points to the other side bending platform 8, and the piston rod of the clamping cylinder 39 is fixedly connected to the clamping block 40. After the wood board 13 is placed on the bending platform, the piston rods of the two clamping cylinders 39 are controlled to extend so that the piston rods push the clamping block 40 to slide toward the end of the wood board 13, thereby clamping the wood board 13. A plurality of clamping holes 41 for fixing the clamping seat 38 are provided on the bending platform along the length direction of the bending platform. A plurality of hinge holes 42 for connecting the hinge rod 11 are provided on the bending arm 6 and the bending platform.

[0081] The furniture woodworking board bending process includes the following steps:

[0082] S1, preheating and softening treatment: preheating and softening the wood board 13 by water vapor;

[0083] S2, Bending: Place the holding device 3 on the bending platform, and then place the preheated and softened wood board 13 to be bent on the holding device 3, and fix the two ends of the wood board through the clamping mechanism, start the bending cylinder 9 to make the middle bending platform 7 lift the holding device 3 and the wood board 13 close to the lower edge of the bending mold 2, and then start the bending cylinder 12 to make the bending arm 6 push the side bending platform 8 to bend the holding device 3 and the wood board 13 close to the bending mold 2 to achieve the purpose of bending the wood board 13;

[0084] S3, fix the locking and holding device 3: the insertion shaft 22 is rotated by the rotating power source, and the insertion shaft 22 drives the first connecting rod 25 to rotate around the axis of the insertion shaft 22, so that the second connecting rod 30 drives the sliding block 27 to slide so that the second sliding shaft 28 slides into the vertical groove 23, and the rotating plate 24 also rotates to a horizontal state, and the first sliding shaft 43 and the second sliding shaft 28 both slide in the vertical groove 23 so that the rotating plate 24 brings the holding rod 16 close to the holding device 3 so that the insertion portion 18 is inserted into the holding hole 17;

[0085] S4, auxiliary mold sticking: after the side bending platform 8 is rotated into place, the auxiliary mold sticking cylinder 35 is started to extend the piston rod, and the auxiliary mold sticking rotating rod 37 moves along the auxiliary mold sticking slide groove 34 to make the mold sticking wheel 36 move along the contour of the bending mold 2, so that the wood board 13 can be pressed against the bending mold 2, thereby improving the conformity of the bending shape of the wood board 13 and the bending mold 2.

[0086] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A furniture wood panel bending device, characterized in that , comprising a frame (1), on which is disposed: Bending die (2); Bending mechanism, the bending mechanism comprises: A bending platform, the bending platform is used to place a wood board (13), the bending platform comprises a middle bending platform (7) and a side bending platform (8), the middle bending platform (7) is connected to a bending cylinder (9) arranged on the frame (1), there are two side bending platforms (8), which are arranged on both sides of the middle bending platform (7), and each side bending platform (8) is provided with a clamping mechanism (10) for fixing the end of the wood board; Bending and rotating rod (5); Bending arm (6); A holding device (3), the holding device (3) being used to keep the bent wood board (13) in a bent state; The retaining device (3) comprises: A retaining soft iron sheet (14), wherein the retaining soft iron sheet (14) is bendable, and the retaining soft iron sheet (14) is arranged on a side of the wood plate (13) away from the bending mold (2); An extension block (15), wherein the extension block (15) has two pieces, which are respectively fixedly connected to the two ends of the retaining soft iron sheet (14) and are perpendicular to the retaining soft iron sheet (14), and a retaining hole (17) is opened on the extension block (15); A retaining rod (16), wherein the retaining rod (16) is provided with an insertion portion (18) capable of being respectively inserted into the two retaining holes (17), so that after the retaining soft iron sheet (14) is bent in place, the distance between the two retaining holes (17) is equal to the distance between the two insertion portions (18), and an anti-slip structure is provided on the insertion portion (18), and the anti-slip structure can prevent the insertion portion (18) from slipping out of the retaining hole (17); The bending device is also provided with an automatic insertion device (20) for inserting the insertion portion (18) of the retaining rod (16) into the retaining hole (17), the automatic insertion device (20) comprising an automatic insertion seat (21), and the automatic insertion seat (21) is provided with: An insertion shaft (22), the insertion shaft (22) being rotatably disposed on the automatic insertion seat (21) and being connected to a rotation power source so as to be able to rotate in a circular motion; A rotating groove, the rotating groove comprising a vertical groove (23) and an arc-shaped rotating groove (26), wherein the arc-shaped rotating groove (26) is arranged on a side of the vertical groove (23) and is in communication with the vertical groove (23); A rotating plate (24), wherein sliding blocks (27) are provided at both ends of the rotating plate (24), and a first sliding shaft (43) and a second sliding shaft (28) are provided on the sliding block (27) from top to bottom, wherein the first sliding shaft (43) is always slidably arranged in the vertical groove (23), and the second sliding shaft (28) can slide along the vertical groove (23) and slide into the arc-shaped rotating groove (26), and a clamping device (29) for clamping the retaining rod (16) is also provided on the rotating plate (24); A first connecting rod (25), one end of which is fixedly connected to the insertion shaft (22), and the other end of which is rotatably connected to the second connecting rod (30), and the other end of which is connected to the second sliding shaft (28) on the sliding block (27).

2. The furniture wood panel bending equipment according to claim 1, characterized in that: The insertion portion (18) is a cylindrical pin, the diameter of which is less than or equal to the diameter of the retaining hole (17); the anti-drop structure comprises a conical elastic portion (19) arranged along the outer circumference of the cylindrical pin; the diameter of the elastic portion (19) at its maximum point in a natural state is greater than the diameter of the retaining hole (17), and the diameter at its minimum point is less than the diameter of the retaining hole (17); the cone vertex of the elastic portion (19) is arranged at the insertion end of the insertion portion (18); and the diameter of the elastic portion is less than the diameter of the retaining hole (17) when in a compressed state.

3. The furniture wood panel bending equipment according to claim 2, characterized in that: The automatic insertion device (20) is also provided with a buffer structure, the buffer structure comprising: A buffer block (31), wherein the buffer block (31) is slidably disposed below the vertical groove (23) along the length direction of the vertical groove (23); A buffer spring (32), one end of the buffer spring (32) is connected to the bottom of the automatic insertion seat (21), and the other end is connected to the lower end of the buffer block (31), and the buffer spring (32) always has a movement tendency to push the buffer block (31) to slide upward.

4. The furniture wood panel bending device according to claim 3, characterized in that: Each side bending platform (8) is provided with an auxiliary die attaching device (33), the auxiliary die attaching device (33) being used to increase the consistency between the bending shape of the wood board (13) and the outer shape of the bending die (2), the auxiliary die attaching device (33) comprising: An auxiliary die attaching slide groove (34), wherein the auxiliary die attaching slide groove (34) is provided on the side of the side bending platform (8), and the auxiliary die attaching slide groove (34) is arc-shaped and matches the shapes of the two sides of the bending mold (2); An auxiliary mold sticking cylinder (35), wherein the auxiliary mold sticking cylinder (35) is arranged inside the side bending platform (8); An auxiliary die sticking rotating rod (37), one end of which is rotatably connected to the piston rod of the auxiliary die sticking cylinder (35), and the other end of which is slidably arranged in the auxiliary die sticking slide groove (34). The auxiliary die sticking rotating rod (37) is also connected to the die sticking wheel (36).

5. The furniture wood panel bending device according to claim 4, characterized in that: The clamping mechanism (10) comprises: A clamping seat (38), wherein each side bending platform (8) is fixedly provided with the clamping seat (38), and a clamping block (40) is slidably provided on the clamping seat (38); A clamping cylinder (39) is fixedly arranged on each side bending platform (8), and a piston rod of the clamping cylinder (39) is fixedly connected to a clamping block (40).

6. The furniture wood panel bending device according to claim 5, characterized in that: A plurality of clamping holes (41) for fixing the clamping seat (38) are provided on the bending platform along the length direction of the bending platform.

7. The furniture wood panel bending device according to claim 6, characterized in that: There are two bending arms (6) in total and they are respectively arranged below the side bending platforms (8); the side bending platforms (8) and the corresponding bending arms (6) are hingedly connected via a hinged rod (11); one end of the bending arm (6) is rotatably sleeved on the bending rotating rod (5); and the bending arm (6) is hingedly connected to the piston rod of a bending oil cylinder (12) arranged on the frame (1); The wood board (13) is clamped between the bending die (2) and the bending platform, the bending oil cylinder (12) and the bending air cylinder (9) are used to rotate the bending platform so that the wood board (13) is bent and deformed toward the bending die (2), and the bending arm (6) and the bending platform are both provided with a plurality of hinge holes (42) for connecting the hinge rod (11).

8. A bending process for a furniture wood panel bending device according to claim 7, characterized in that: The following steps are involved: S1, preheating and softening treatment: preheating and softening the wood board (13) by water vapor; S2, bending: placing the holding device (3) on the bending platform, and then placing the preheated and softened wood board (13) to be bent on the holding device (3), fixing the two ends of the wood board by means of a clamping mechanism, starting the bending cylinder (9) so that the middle bending platform (7) lifts up the holding device (3) and the wood board (13) to be close to the lower edge of the bending mold (2), and then starting the bending oil cylinder (12) so that the bending arm (6) pushes the side bending platform (8) to bend the holding device (3) and the wood board (13) to be close to the bending mold (2) to achieve the purpose of bending the wood board (13); S3, fixing the locking and holding device (3): the insertion shaft (22) is rotated by rotating the power source, and the insertion shaft (22) drives the first connecting rod (25) to rotate around the axis of the insertion shaft (22), so that the second connecting rod (30) drives the sliding block (27) to slide, so that the second sliding shaft (28) slides into the vertical groove (23), and the rotating plate (24) also rotates to a horizontal state, and the first sliding shaft (43) and the second sliding shaft (28) both slide in the vertical groove (23) so that the rotating plate (24) brings the holding rod (16) close to the holding device (3) so that the insertion portion (18) is inserted into the holding hole (17); S4, auxiliary die sticking: after the side bending platform (8) is rotated into place, the auxiliary die sticking cylinder (35) is started to extend the piston rod, and the auxiliary die sticking rotating rod (37) moves along the auxiliary die sticking slide groove (34) to make the die sticking wheel (36) move along the contour of the bending mold (2), so that the wood board (13) can be pressed against the bending mold (2), thereby improving the conformity of the bending shape of the wood board (13) and the bending mold (2).

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