Clamping structure and dovetail joint machine

Abstract

The utility model relates to the field of wood processing, and discloses a clamping structure and a dovetail joint machine, the clamping structure comprises a processing table, the processing table is used for placing a wood board, and the clamping structure further comprises a mounting frame, a pressing mechanism, a back plate, a pressing mechanism and a centering positioning mechanism; the mounting frame is arranged on the processing table; the downward pressing mechanism is arranged on the mounting frame and used for downwards pressing a wood board placed on the machining table. The back plate is arranged in the vertical direction, the back plate is fixed to the mounting frame, and a gap is formed between the lower end of the back plate and the machining table; the pressing mechanism is arranged on the machining table and used for pressing a vertically-arranged wood plate on the rear side face of a back plate. The centering mechanism is arranged on the mounting frame and used for clamping a wood board vertically arranged on the back board and a wood board placed on the machining table. In addition, the dovetail joint machine adopts the clamping structure.

Description

Technical Field

[0001] The utility model relates to the field of wood processing, in particular to a clamping structure and a dovetail tenon machine. Background Art

[0002] When processing dovetail grooves and dovetail tenons, the wooden board needs to be clamped on the dovetail tenon machine, and the dovetail tenon machine processes the mold wooden board. When two wooden boards that are perpendicular to each other and spliced ​​together by dovetail tenons and dovetail grooves need to be processed, in order to make the two wooden boards spliced ​​together perfectly, the two wooden boards are usually fixed on the dovetail tenon machine at the same time and made perpendicular to each other, that is, one of the wooden boards is set horizontally and the other is set vertically, and the lower sides of the two wooden boards are aligned at this time. Then the same tool opens the dovetail groove on the lower ends of the two wooden boards in one feed movement.

[0003] Prior to this, the two wooden boards need to be aligned so that after the two wooden boards are processed, the two wooden boards can be aligned when they are matched with dovetail grooves and dovetail tenons. However, since the dovetail grooves of the two wooden boards are processed in the same feed movement, the wooden boards are currently mainly positioned by naked eyes and rulers, and the efficiency of positioning and installation is low. Utility Model Content

[0004] The technical problem to be solved by the utility model is to solve at least one of the technical problems mentioned above.

[0005] The solution of the utility model to solve the technical problem is:

[0006] A clamping structure comprises a processing table, the processing table is used to place a wooden board, and the clamping structure also comprises a mounting frame, a pressing mechanism, a back plate, a clamping mechanism and a centering and positioning mechanism; the mounting frame is arranged on the processing table; the pressing mechanism is arranged on the mounting frame, and the pressing mechanism is used to press down the wooden board placed on the processing table; the back plate is arranged vertically, the back plate is fixed on the mounting frame, and a gap is provided between the lower end of the back plate and the processing table; the clamping mechanism is arranged on the processing table, and the clamping mechanism is used to press the vertically arranged wooden board against the rear side of the back plate; the centering mechanism is arranged on the mounting frame, and the centering mechanism is used to clamp the wooden board arranged vertically on the back plate and the wooden board placed on the processing table.

[0007] As a further improvement of the above technical solution, the mounting frame includes a left column, a right column, a crossbeam and a connecting frame, the left column and the right column are respectively arranged on the processing table, the left column and the right column are spaced apart in the left and right directions, the crossbeam is arranged between the left column and the right column, the two ends of the crossbeam are respectively fixedly connected to the left column and the right column, the back plate is fixed on the left column and the right column, the connecting frame is fixedly connected to the left column and the right column, the clamping mechanism is fixed on the connecting frame, and the pressing mechanism is fixed on the crossbeam.

[0008] As a further improvement of the above technical solution, the pressing mechanism includes multiple pressing cylinders and multiple pressing blocks, the pressing blocks are fixed at the movable ends of the pressing cylinders, the pressing cylinders drive the pressing blocks to move up and down, the pressing blocks are used to press the wooden boards downward, the pressing blocks and the pressing cylinders are arranged in a one-to-one correspondence, a first slide slot hole along the left and right directions is opened on the crossbeam, and all the pressing cylinders are slidably fitted and connected with the first slide slot holes.

[0009] As a further improvement of the above technical solution, the clamping mechanism includes a plurality of clamping cylinders and a plurality of clamping blocks, the clamping blocks and the clamping cylinders correspond one to one, the clamping blocks are arranged at the movable ends of the clamping cylinders, the clamping cylinders drive the clamping blocks to move in the front-rear direction, the clamping blocks are used to press the wooden board on the back panel, the connecting frame is provided with a second slide slot hole extending in the left-right direction, and all the clamping cylinders and the second slide slot holes are slidably matched and connected.

[0010] As a further improvement of the above technical solution, the centering positioning mechanism includes a screw rod, a first guide rod, a left clamping block, and a right clamping block, the first guide rod extending in the left and right directions, the two ends of the first guide rod being respectively fixed on the left column and the right column, the screw rod being connected with the left column and the right column for relative rotation, the left half of the screw rod being provided with a left-handed thread, the right half of the screw rod being provided with a right-handed thread, the left clamping block being provided with a left screw hole, the right clamping block being provided with a right screw hole, the left screw hole being connected with the left-handed thread, the right screw hole being connected with the right-handed thread, the left clamping block and the right clamping block being respectively provided with a first guide hole which is slidably matched with the first guide rod, and the left clamping block and the right clamping block are used to clamp the wooden board on the processing table and the wooden board on the back board.

[0011] As a further improvement of the above technical solution, the centering and positioning mechanism also includes a second guide rod, which extends in the left and right directions, is arranged behind the back plate, and is spaced apart from the second guide rod and the back plate. Second guide holes are respectively provided on the left clamping block and the right clamping block, and the second guide holes and the second guide rod are slidably matched. The left clamping block and the second clamping block extend from the gap between the back plate and the processing table to above the workbench.

[0012] As a further improvement of the above technical solution, the left clamping block is provided with a first adjustment hole, and the first adjustment hole is threadedly fitted with a first top screw. The right clamping block is provided with a second adjustment hole, and the second adjustment hole is threadedly fitted with a second top screw. The first adjustment hole and the second adjustment hole extend in the left and right directions respectively, and the first top screw and the second top screw are respectively arranged directly above the processing table, and the first top screw and the second top screw are respectively used to support the left and right sides of the wooden board on the processing table.

[0013] As a further improvement of the above technical solution, the left clamping block is provided with a third adjustment hole, and the third adjustment hole is threadedly fitted with a third top screw. The right clamping block is provided with a fourth adjustment hole, and the fourth adjustment hole is threadedly fitted with a fourth top screw. The third top screw and the fourth top screw are used to support the left and right sides of the wooden board on the back panel.

[0014] The utility model also provides a dovetail tenon machine, comprising the clamping structure in any of the above technical solutions.

[0015] The beneficial effect of the utility model is that two wooden boards need to be spliced ​​together vertically through dovetail grooves and dovetail tenons. Before opening the dovetail grooves and dovetail tenons, one of the wooden boards can be placed flat on the processing table, and the other wooden board can be placed on the rear side of the backboard. The template on the processing table and the wooden board on the rear side of the backboard are centered and clamped by the centering positioning mechanism to speed up the adjustment of the positions of the two wooden boards. After the position adjustment of the two wooden boards is completed, the wooden board on the processing table and the wooden board on the rear side of the backboard are respectively pressed and fixed by the pressing mechanism and the clamping mechanism. The utility model can facilitate the positioning of the wooden board and improve the efficiency of positioning and fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the clamping structure of the utility model;

[0017] Figure 2 The utility model Figure 1 Axonometric section view at AA in the figure;

[0018] Figure 3 The axonometric measurement of the clamping structure of the utility model Figure 1 ;

[0019] Figure 4 The axonometric measurement of the clamping structure of the utility model Figure 2 .

[0020] In the accompanying drawings: 1-processing table, 21-left column, 22-right column, 23-crossbeam, 231-first slide slot hole, 24-connecting frame, 241-second slide slot hole, 31-downward pressure cylinder, 32-downward pressure block, 4-back plate, 51-clamping cylinder, 52-clamping block, 61-screw rod, 62-handle, 63-first guide rod, 64-left clamping block, 65-right clamping block, 66-second guide rod, 67-first top screw, 68-second top screw, 69-third top screw, 610-fourth top screw. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the above briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of them. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0022] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the utility model can be combined interchangeably without conflicting with each other.

[0023] Reference Figure 1 to Figure 4, a clamping structure comprises a processing table 1, on which a wooden board is placed, and the clamping structure further comprises a mounting frame, a pressing mechanism, a backboard 4, a clamping mechanism and a centering and positioning mechanism; the mounting frame is arranged on the processing table 1; the pressing mechanism is arranged on the mounting frame, and the pressing mechanism is used to press downward the wooden board placed on the processing table 1; the backboard 4 is arranged vertically, and the backboard 4 is fixed on the mounting frame, and a gap is provided between the lower end of the backboard 4 and the processing table 1; the clamping mechanism is arranged on the processing table 1, and the clamping mechanism is used to press the vertically arranged wooden board against the rear side of the backboard 4; the centering mechanism is arranged on the mounting frame, and the centering mechanism is used to clamp the wooden board vertically arranged on the backboard 4 and the wooden board placed on the processing table 1.

[0024] From the above, it can be concluded that the two wooden boards need to be spliced ​​together vertically through dovetail grooves and dovetail tenons. Before opening the dovetail grooves and dovetail tenons, one of the wooden boards can be placed flat on the processing table 1, and the other wooden board can be placed on the rear side of the backboard 4. The template on the processing table 1 and the wooden board on the rear side of the backboard 4 are centered and clamped by the centering positioning mechanism to speed up the adjustment of the positions of the two wooden boards. After the positions of the two wooden boards are adjusted, the wooden board on the processing table 1 and the wooden board on the rear side of the backboard 4 are respectively pressed and fixed by the pressing mechanism and the clamping mechanism. The utility model can facilitate the positioning of wooden boards and improve the efficiency of positioning and fixing.

[0025] In some embodiments, the mounting frame includes a left column 21, a right column 22, a crossbeam 23 and a connecting frame 24, the left column 21 and the right column 22 are respectively arranged on the processing table 1, the left column 21 and the right column 22 are arranged at intervals in the left and right directions, the crossbeam 23 is arranged between the left column 21 and the right column 22, the two ends of the crossbeam 23 are respectively fixedly connected to the left column 21 and the right column 22, the back plate 4 is fixed on the left column 21 and the right column 22, the connecting frame 24 is fixedly connected to the left column 21 and the right column 22, the clamping mechanism is fixed on the connecting frame 24, and the pressing mechanism is fixed on the crossbeam 23. The structure is simple and convenient to set up. Through the setting of the structure, it is convenient to install the pressing mechanism and the clamping mechanism. When in use, the wooden board against the back plate 4 is arranged between the connecting frame 24 and the back plate 4, and the wooden board on the back plate 4 is pressed by the clamping mechanism on the connecting frame 24.

[0026] In some embodiments, the pressing mechanism includes a plurality of pressing cylinders 31 and a plurality of pressing blocks 32, wherein the pressing blocks 32 are fixed to the movable ends of the pressing cylinders 31, and the pressing cylinders 31 drive the pressing blocks 32 to move up and down, and the pressing blocks 32 are used to press the wooden board downward, and the pressing blocks 32 and the pressing cylinders 31 are arranged in a one-to-one correspondence, and a first slide slot hole 231 along the left and right directions is provided on the crossbeam 23, and all the pressing cylinders 31 are connected to the first slide slot hole 231 in a sliding fit. In actual use, two pressing cylinders 31 are arranged, and two pressing blocks 32 are arranged accordingly. Through the arrangement of this structure, the position of the pressing cylinder 31 can be adjusted by translation from left to right.

[0027] Preferably, the fixing portion of the pressing cylinder 31 can be locked on the first slide slot hole 231 by bolts to limit the movement of the pressing cylinder 31, so that the fixing portion of the pressing cylinder 31 and the first slide slot hole 231 are relatively stationary.

[0028] In some embodiments, the clamping mechanism includes a plurality of clamping cylinders 51 and a plurality of clamping blocks 52, the clamping blocks 52 and the clamping cylinders 51 correspond one to one, the clamping blocks 52 are arranged at the movable end of the clamping cylinders 51, the clamping cylinders 51 drive the clamping blocks 52 to move in the front-back direction, the clamping blocks 52 are used to press the wooden board on the back plate 4, the connecting frame 24 is provided with a second slide slot hole 241 extending in the left-right direction, and all the clamping cylinders 51 are connected by sliding fit with the second slide slot hole 241. The structure is simple and convenient to set up. Through the setting of the structure, the position of the clamping cylinder 51 can be adjusted in the left-right direction to adapt to wooden boards of different widths.

[0029] Preferably, two pressing cylinders 51 and two pressing blocks 52 are provided. The fixing portion of the pressing cylinder 51 can be locked in the second slide slot hole 241 by bolts to limit the movement of the pressing cylinder 51. The fixing portion of the pressing cylinder 51 and the second slide slot hole 241 are relatively stationary.

[0030] In some embodiments, the centering positioning mechanism includes a screw rod 61, a first guide rod 63, a left clamping block 64, and a right clamping block 65. The first guide rod 63 extends in the left and right directions. The two ends of the first guide rod 63 are respectively fixed to the left column 21 and the right column 22. The screw rod 61 is relatively rotatably connected with the left column 21 and the right column 22. The left half of the screw rod 61 is provided with a left-handed thread, and the right half of the screw rod 61 is provided with a right-handed thread. The left clamping block 64 is provided with a left screw hole, and the right clamping block 65 is provided with a right screw hole. The left screw hole is connected with the left-handed thread, and the right screw hole is connected with the right-handed thread. The left clamping block 64 and the right clamping block 65 are respectively provided with a first guide hole that slides with the first guide rod 63. The left clamping block 64 and the right clamping block 65 are used to clamp the wooden board on the processing table 1 and the wooden board on the back panel 4. When in use, both the left column 21 and the right column 22 are provided with shaft holes, both the shaft holes are provided with bearings, and the screw rod 61 is matched and connected with the bearings to make the screw rod 61 rotate smoothly.

[0031] In addition, a handle 62 is provided on the screw rod 61 , so that an operator can rotate the screw rod 61 through the handle 62 .

[0032] In some embodiments, the centering and positioning mechanism further includes a second guide rod 66, which extends in the left-right direction, is disposed behind the back plate 4, is spaced apart from the second guide rod 66 and the back plate 4, and a second guide hole is respectively provided on the left clamping block 64 and the right clamping block 65, the second guide hole and the second guide rod 66 are slidably matched, and the left clamping block 64 and the second clamping block extend from the gap between the back plate 4 and the processing table 1 to the top of the workbench. By providing the second guide rod 66 and the second guide hole, the left clamping block 64 and the right clamping block 65 are very stable when moving in the left-right direction.

[0033] In some embodiments, the left clamping block 64 is provided with a first adjustment hole, the first adjustment hole is threadedly matched with a first top screw 67, the right clamping block 65 is provided with a second adjustment hole, the second adjustment hole is threadedly matched with a second top screw 68, the first adjustment hole and the second adjustment hole extend in the left and right directions respectively, the first top screw 67 and the second top screw 68 are respectively arranged directly above the processing table 1, and the first top screw 67 and the second top screw 68 are respectively used to resist the left and right sides of the wooden board on the processing table 1. The structure is simple and convenient to set. Through the setting of the first top screw 67, the first adjustment hole, the second top screw 68, and the second adjustment hole, when the left clamping block 64 and the right clamping block 65 are centered and clamped, the first top screw 67 and the second top screw 68 clamp the left and right sides of the template on the processing table 1. When it is necessary to fine-tune the position of the centered clamping, the position of the wooden board on the processing table 1 can be fine-tuned by manually rotating the first top screw 67 and the second top screw 68. For example, when two wooden boards of the same width need to be matched with multiple dovetail grooves and dovetail tenons, the wooden board on the back panel 4 and the wooden board on the processing table 1 can be staggered by a distance roughly equal to the width of a dovetail groove, so that after the grooving and tenoning processing is completed, when the two wooden boards are spliced ​​together, the left and right sides of the two boards are flush.

[0034] In some embodiments, the left clamping block 64 is provided with a third adjustment hole, the third adjustment hole is threadedly matched with a third top screw 69, the right clamping block 65 is provided with a fourth adjustment hole, the fourth adjustment hole is threadedly matched with a fourth top screw 610, and the third top screw 69 and the fourth top screw 610 are used to abut against the left and right sides of the wooden board on the back plate 4. In this way, the centering position of the wooden board behind the back plate 4 can be finely adjusted, which is convenient to use.

[0035] The utility model also provides a dovetail tenon machine, including the clamping structure in any of the above embodiments. Since the above content has already described the clamping structure, those skilled in the art should be able to understand it in conjunction with the drawings in the specification, so it will not be discussed in detail here.

[0036] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A clamping structure, comprising a processing table (1), wherein the processing table (1) is used to place a wooden board, characterized in that: The clamping structure also includes a mounting frame, a pressing mechanism, a backboard (4), a clamping mechanism and a centering and positioning mechanism; the mounting frame is arranged on the processing table (1); the pressing mechanism is arranged on the mounting frame, and the pressing mechanism is used to press downward the wooden board placed on the processing table (1); the backboard (4) is arranged vertically, the backboard (4) is fixed on the mounting frame, and a gap is provided between the lower end of the backboard (4) and the processing table (1); the clamping mechanism is arranged on the processing table (1), and the clamping mechanism is used to press the vertically arranged wooden board onto the rear side of the backboard (4); the centering and positioning mechanism is arranged on the mounting frame, and the centering and positioning mechanism is used to clamp the wooden board vertically arranged on the backboard (4) and the wooden board placed on the processing table (1).

2. The clamping structure according to claim 1, characterized in that: The mounting frame comprises a left column (21), a right column (22), a crossbeam (23) and a connecting frame (24); the left column (21) and the right column (22) are respectively arranged on the processing table (1); the left column (21) and the right column (22) are arranged at intervals in the left-right direction; the crossbeam (23) is arranged between the left column (21) and the right column (22); two ends of the crossbeam (23) are respectively fixedly connected to the left column (21) and the right column (22); the back plate (4) is fixed on the left column (21) and the right column (22); the connecting frame (24) is fixedly connected to the left column (21) and the right column (22); the pressing mechanism is fixed on the connecting frame (24); and the pressing mechanism is fixed on the crossbeam (23).

3. The clamping structure according to claim 2, characterized in that: The pressing mechanism comprises a plurality of pressing cylinders (31) and a plurality of pressing blocks (32), wherein the pressing blocks (32) are fixed to the movable ends of the pressing cylinders (31), and the pressing cylinders (31) drive the pressing blocks (32) to move up and down, and the pressing blocks (32) are used to press the wooden board downwards, and the pressing blocks (32) and the pressing cylinders (31) are arranged in a one-to-one correspondence, and a first slide slot hole (231) along the left-right direction is opened on the crossbeam (23), and all the pressing cylinders (31) are connected to the first slide slot hole (231) in a sliding fit.

4. The clamping structure according to claim 2, characterized in that: The clamping mechanism comprises a plurality of clamping cylinders (51) and a plurality of clamping blocks (52), wherein the clamping blocks (52) correspond to the clamping cylinders (51) one by one, and the clamping blocks (52) are arranged at the movable ends of the clamping cylinders (51). The clamping cylinders (51) drive the clamping blocks (52) to move in the front-rear direction, and the clamping blocks (52) are used to press the wooden board on the back plate (4). The connecting frame (24) is provided with a second slide slot hole (241) extending in the left-right direction, and all the clamping cylinders (51) and the second slide slot holes (241) are connected in a sliding manner.

5. The clamping structure according to claim 2, characterized in that: The centering and positioning mechanism comprises a screw rod (61), a first guide rod (63), a left clamping block (64), and a right clamping block (65). The first guide rod (63) extends in the left-right direction. The two ends of the first guide rod (63) are respectively fixed on the left column (21) and the right column (22). The screw rod (61) is connected to the left column (21) and the right column (22) in a relatively rotatable manner. The left half of the screw rod (61) is provided with a left-handed thread, and the right half of the screw rod (61) is provided with a left-handed thread. A right-handed thread is provided, the left clamping block (64) is provided with a left screw hole, the right clamping block (65) is provided with a right screw hole, the left screw hole and the left-handed thread are matched and connected, the right screw hole and the right-handed thread are matched and connected, the left clamping block (64) and the right clamping block (65) are respectively provided with a first guide hole that is slidably matched with the first guide rod (63), and the left clamping block (64) and the right clamping block (65) are used to clamp the wooden board on the processing table (1) and the wooden board on the back plate (4).

6. The clamping structure according to claim 5, characterized in that: The centering and positioning mechanism also includes a second guide rod (66), which extends in the left-right direction. The second guide rod (66) is arranged behind the back plate (4), and the second guide rod (66) and the back plate (4) are spaced apart. The left clamping block (64) and the right clamping block (65) are respectively provided with second guide holes, and the second guide holes and the second guide rod (66) are slidably matched. The left clamping block (64) and the right clamping block (65) extend from the gap between the back plate (4) and the processing table (1) to the top of the workbench.

7. The clamping structure according to claim 5, characterized in that: The left clamping block (64) is provided with a first adjustment hole, and the first adjustment hole is threadedly engaged with a first top screw (67); the right clamping block (65) is provided with a second adjustment hole, and the second adjustment hole is threadedly engaged with a second top screw (68); the first adjustment hole and the second adjustment hole extend in the left and right directions respectively; the first top screw (67) and the second top screw (68) are respectively arranged directly above the processing table (1); the first top screw (67) and the second top screw (68) are respectively used to resist the left and right sides of the wooden board on the processing table (1).

8. The clamping structure according to claim 5, characterized in that: The left clamping block (64) is provided with a third adjustment hole, and the third adjustment hole is threadedly engaged with a third top screw (69); the right clamping block (65) is provided with a fourth adjustment hole, and the fourth adjustment hole is threadedly engaged with a fourth top screw (610); the third top screw (69) and the fourth top screw (610) are used to abut against the left and right sides of the wooden board on the back panel (4).

9. A dovetail tenon machine, characterized in that: It comprises the clamping structure as described in any one of claims 1 to 8.

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