Positioning device for wood furniture carving machine

Abstract

The utility model belongs to furniture carving technical field, concretely relates to a wooden furniture carving machine positioning device, including the press roll of symmetry in the top of the lathe bed, both ends of press roll all are equipped with interval adjusting mechanism, be used for controlling the relative displacement between two press rolls, interval adjusting mechanism includes the link board, the link board is along the length direction and is opened to have the guide groove, the link board one side mirror image symmetry is equipped with two rotary arm groups, every rotary arm group passes through the rotary arm one and rotary arm two of hinge joint constitutes, and two rotary arm groups are whole and show M type structure, the utility model discloses through servo electric jar group control T type board elevating, makes rotary arm group folding or unfolding, thereby two press rolls relative displacement, realize the adjustment of each other interval, adapt to the board of different size, avoid the press roll edge to hang in the air, make its positioning to the board more stable.

Description

Technical Field

[0001] This utility model belongs to the field of furniture carving technology, specifically relating to a positioning device for a wooden furniture carving machine. Background Technology

[0002] In the furniture manufacturing industry, engraving machines are devices that use CNC technology to automate the processing of wood and related materials. They are mainly used for carving, hollowing out, and shaping complex patterns in the furniture industry. By controlling the tool path through preset programs, they can achieve high-precision cutting and relief carving on materials such as MDF and solid wood. They are widely used in the fields of classical furniture carving, door panel decoration, and cabinet door making, and can significantly improve production efficiency and product precision.

[0003] In existing engraving machines, two pressure rollers apply downward pressure to the board during engraving to counteract the lifting force or lateral impact force generated by the engraving cutter head, thus preventing the board from shaking or shifting. However, although the pressure rollers can be raised and lowered, the spacing between them cannot be adjusted. Their relative positions are fixed, making it difficult to automatically adjust and adapt to boards of different lengths. This may cause the board to shake and shift due to the edges of the pressure rollers being suspended in the air. Utility Model Content

[0004] The purpose of this invention is to provide a positioning device for a wooden furniture carving machine. By controlling the lifting and lowering of the T-shaped plate through a servo electric cylinder group, the rotating arm group is folded or unfolded, thereby causing the two pressure rollers to move relative to each other and adjusting the distance between them. This allows the device to adapt to different sizes of boards, avoids the edges of the pressure rollers being suspended, and makes the positioning of the board more stable.

[0005] The specific technical solution adopted by this utility model is as follows: A positioning device for a wooden furniture carving machine includes pressure rollers symmetrically arranged on the top of the bed. Both ends of the pressure rollers are provided with a spacing adjustment mechanism for controlling the relative displacement between the two pressure rollers. The spacing adjustment mechanism includes a connecting plate with a guide groove extending through it along its length. Two rotating arm assemblies are mirror-symmetrically arranged on one side of the connecting plate. Each rotating arm assembly is composed of a first rotating arm and a second rotating arm that are hinged together. The two rotating arm assemblies are in an M-shaped structure. The two second rotating arms are hinged together by a fixed shaft at their ends. One end of each of the first rotating arms is rotatably connected to the shaft of the corresponding pressure roller.

[0006] Both ends of the pressure roller are fixedly connected to clamping wheels, which are slidably embedded in the guide groove and form a sliding guide engagement with it.

[0007] The fixed shaft is fixedly connected to the connecting plate, and the other ends of the two rotating arms are rotatably connected to a T-shaped plate. Sliding arms are slidably connected to both sides of the bed.

[0008] The outer wall of the connecting plate is fixedly connected to a support plate one and a support plate two, and servo electric cylinder assemblies are provided at corresponding positions of the two.

[0009] The servo electric cylinder assembly includes two servo electric cylinders, one of which is fixedly installed in the middle of the support plate and its output end is fixedly connected to the T-shaped plate, and the other is fixedly installed on the side wall of the sliding arm and its output end is fixedly connected to the support plate.

[0010] The two servo electric cylinders in the middle of the support plate can be synchronously driven by the same controller so that their output ends move synchronously.

[0011] The technical effect achieved by this utility model is as follows: by controlling the lifting and lowering of the T-shaped plate through the servo electric cylinder group, the rotating arm group is folded or unfolded, thereby causing the two pressure rollers to move relative to each other and adjusting the distance between them, adapting to different sizes of plates, avoiding the edge of the pressure rollers being suspended, and making its positioning of the plate more stable. Attached Figure Description

[0012] Figure 1 This is an overall view of the wooden furniture carving machine positioning device provided in an embodiment of this utility model; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 yes Figure 1 A magnified view of a section at point B.

[0013] The attached diagram lists the components represented by each number as follows: 1. Bed; 101. Pressure roller; 102. Sliding arm; 103. Clamping wheel; 104. Connecting plate; 105. Guide groove; 106. Rotary arm one; 107. Rotary arm two; 108. Fixed shaft; 109. T-shaped plate; 110. Support plate one; 111. Support plate two; 112. Servo electric cylinder assembly. Detailed Implementation

[0014] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0015] like Figures 1-3 As shown, a positioning device for a wooden furniture carving machine includes pressure rollers 101 symmetrically arranged on the top of the bed 1. Sliding arms 102 are slidably connected to both sides of the bed 1. Support plate 110 and support plate 211 are fixedly connected to the outer wall of the connecting plate 104. Servo electric cylinder group 112 is provided at the corresponding positions of the two. Servo electric cylinder group 112 includes two servo electric cylinders. One of them is fixedly installed in the middle of support plate 110 and its output end is fixedly connected to T-shaped plate 109. The other is fixedly installed in the side wall of sliding arm 102 and its output end is fixedly connected to support plate 211. The two servo electric cylinders in the middle of support plate 110 can be synchronously driven by the same controller so that their output ends move synchronously.

[0016] According to the above structure, the current engraving machine uses the sliding arm 102 to move the gantry, spindle and other components to perform engraving. When the sliding arm 102 moves, it also moves the servo cylinder group 112, the second support plate 111 and the connecting plate 104 together. When the servo cylinder in the servo cylinder group 112 located below the second support plate 111 is raised or lowered, it can drive the second support plate 111, the connecting plate 104 and the pressure roller 101 to be raised or lowered, so that the pressure roller 101 is away from or close to the material, which is convenient for loading and unloading. The servo cylinders on the two support plates 110 can be synchronized by the PLC controller, and an absolute encoder is added to the end of the cylinder shaft to provide real-time position feedback, so that the two T-shaped plates 109 can be raised and lowered synchronously.

[0017] Reference Appendix Figures 1-3 Both ends of the pressure roller 101 are provided with a spacing adjustment mechanism to control the relative displacement between the two pressure rollers 101. The spacing adjustment mechanism includes a connecting plate 104. The connecting plate 104 has a guide groove 105 extending through it along its length. Two rotating arm groups are mirror-symmetrically arranged on one side of the connecting plate 104. Each rotating arm group is composed of a first rotating arm 106 and a second rotating arm 107 that are hinged together. The two rotating arm groups are in an M-shaped structure. The two second rotating arms 107 are hinged together by a fixed shaft 108 at their ends. One end of the first rotating arm 106 is rotatably connected to the shaft of the corresponding pressure roller 101. Both ends of the pressure roller 101 are fixedly connected with clamping wheels 103. The clamping wheels 103 are slidably embedded in the guide groove 105 and form a sliding guide cooperation with it. The fixed shaft 108 is fixedly connected to the connecting plate 104. The other ends of the two first rotating arms 106 are rotatably connected to a T-shaped plate 109.

[0018] According to the above structure, two sets of rotating arm groups are mirror-symmetrically arranged on one side of the connecting plate 104. The ends of the rotating arms 107 are hinged again through the fixed shaft 108. The servo electric cylinders on the two support plates 110 drive the two T-shaped plates 109 to rise and fall synchronously. When the T-shaped plate 109 is driven to move downward by the servo electric cylinder, it drives the rotating arm 106 to swing downward with the shaft of the pressure roller 101 as the fulcrum. Through the geometric constraint of the M-shaped linkage mechanism, the two pressure rollers 101 are forced to expand outward to both sides, and the distance between them increases. Conversely, when the T-shaped plate 109 rises, the connecting end of the rotating arm 106 and the T-shaped plate 109 swings back upward, pushing the pressure rollers 101 to be tightened inward, and the distance between them decreases. During this process, the clamping roller 103 always slides along the guide groove 105 of the connecting plate 104, which not only constrains the movement trajectory of the pressure roller 101, but also offsets part of the lateral force through sliding friction, ensuring smooth movement.

[0019] The working principle of this utility model is as follows: the sliding arm 102 slides along the guide rails on both sides of the bed 1, driving the gantry and spindle of the engraving machine to perform engraving operations. When the sliding arm 102 moves, the servo electric cylinder group 112, the second support plate 111 and the connecting plate 104 fixedly connected to it move synchronously. The servo electric cylinder located below the second support plate 111 in the servo electric cylinder group 112 can be lifted and lowered independently, driving the second support plate 111, the connecting plate 104 and the pressure roller 101 to move up and down as a whole, realizing the separation or contact between the pressure roller 101 and the plate, which is convenient for loading and unloading workpieces. Furthermore, the servo electric cylinders on the two support plates 110 are connected to the PLC controller signal, and each shaft end is equipped with an absolute encoder to form a position closed loop. When the PLC issues a synchronous control command, the encoder collects the position signal of the piston rod of the two electric cylinders in real time and feeds it back to the controller, driving the two electric cylinders to drive the T-shaped plate 109 to rise and fall synchronously. Furthermore, the spacing adjustment mechanism adopts an M-type swivel arm assembly structure. Two sets of swivel arm assemblies, which are hinged together by swivel arm one 106 and swivel arm two 107, are mirror-symmetrically arranged on one side of the connecting plate 104. The ends of swivel arm two 107 of the two swivel arm assemblies are hinged again through the fixed shaft 108 to form a closed M-type linkage mechanism. The servo electric cylinders on the two support plates one 110 drive the two T-shaped plates 109 to rise and fall synchronously. Furthermore, when the T-shaped plate 109 is driven downward by the servo electric cylinder, it causes the rotating arm 106 to swing downward around the pivot of the pressure roller 101, with the connection end to the T-shaped plate 109 as the fulcrum. Through the geometric constraint of the M-shaped linkage mechanism, the two pressure rollers 101 are forced to expand outward to both sides, increasing the distance between them. Conversely, when the T-shaped plate 109 rises, the connection end of the rotating arm 106 to the T-shaped plate 109 swings back upward, pushing the pressure rollers 101 to be tightened inward, reducing the distance between them. During this process, the clamping roller 103 always slides along the guide groove 105 of the connecting plate 104, which not only constrains the movement trajectory of the pressure rollers 101, but also offsets part of the lateral force through sliding friction, ensuring smooth movement.

[0020] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A positioning device for a wooden furniture carving machine, comprising pressure rollers (101) symmetrically arranged on the top of the bed (1), characterized in that: Both ends of the pressure roller (101) are provided with a spacing adjustment mechanism to control the relative displacement between the two pressure rollers (101). The spacing adjustment mechanism includes a connecting plate (104). The connecting plate (104) has a guide groove (105) through it along the length direction. Two rotating arm groups are mirror-symmetrically arranged on one side of the connecting plate (104). Each rotating arm group is composed of a rotating arm one (106) and a rotating arm two (107) that are hinged together. The two rotating arm groups are in an M-shaped structure. The two rotating arms two (107) are hinged to each other through a fixed shaft (108) at the end. One end of the two rotating arms one (106) is rotatably connected to the rotating shaft of the corresponding pressure roller (101).

2. The positioning device for a wooden furniture carving machine according to claim 1, characterized in that: Both ends of the pressure roller (101) are fixedly connected with clamping wheels (103), which are slidably embedded in the guide groove (105) and form a sliding guide cooperation with it.

3. The positioning device for a wooden furniture carving machine according to claim 1, characterized in that: The fixed shaft (108) is fixedly connected to the connecting plate (104), and the other ends of the two rotating arms (106) are rotatably connected to a T-shaped plate (109). The two sides of the bed (1) are slidably connected to sliding arms (102).

4. The positioning device for a wooden furniture carving machine according to claim 3, characterized in that: The outer wall of the connecting plate (104) is fixedly connected to a support plate one (110) and a support plate two (111), and a servo electric cylinder group (112) is provided at the corresponding position of the two.

5. The positioning device for a wooden furniture carving machine according to claim 4, characterized in that: The servo electric cylinder assembly (112) includes two servo electric cylinders, one of which is fixedly installed in the middle of the support plate one (110) and its output end is fixedly connected to the T-shaped plate (109), and the other is fixedly installed on the side wall of the sliding arm (102) and its output end is fixedly connected to the support plate two (111).

6. The positioning device for a wooden furniture carving machine according to claim 5, characterized in that: The two servo electric cylinders in the middle of the support plate (110) can be synchronously driven by the same controller so that their output ends move synchronously.

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