Comb engraving positioning device

Abstract

The present application relates to the technical field of engraving machine, and discloses a positioning device for comb engraving, which comprises an engraving machine body, a support arranged on the workbench surface of the engraving machine body, a positioning mechanism arranged on the top of the support, a workpiece arranged on the inner side of the positioning mechanism, and a turnover mechanism arranged on the outer side of the positioning mechanism and used for turning over the workpiece; the positioning mechanism comprises a rotating arm symmetrically arranged on the top of the support, the rotating arm is used for transmitting force, a support plate one is arranged on the end of the rotating arm close to the support, a support plate two is arranged on the side of the support plate one close to the workpiece, the support plate one and the support plate two are of the same structure, a short arm is symmetrically arranged inside the support plate two, and the short arm clamps the top surface and the bottom surface of the workpiece. Through the arrangement of the positioning mechanism, the workpiece of different widths can be fixed in the center, the positioning mechanism can be adjusted according to the width of the workpiece, the workpiece can be ensured to be always in the correct position during the machining process, and the positioning device can adapt to the machining requirements of different products.

Description

Technical Field

[0001] This invention relates to the field of engraving machine technology, and more particularly to a positioning device for engraving combs. Background Technology

[0002] In the process of comb carving, the positioning device plays a crucial role. Precise positioning is essential for ensuring the carving quality of each comb. The positioning device securely fixes the comb to the worktable of the carving equipment, preventing displacement during the carving process. Through precise positioning, the carving equipment can carve according to a preset program, ensuring that the shape, depth, and spacing of each tooth meet design requirements. Furthermore, the positioning device improves carving efficiency. Because the comb is firmly fixed, the carving equipment can carve more quickly without worrying about the comb shifting.

[0003] Traditional positioning devices are widely used in the engraving field, but due to limitations in their structure and working principle, they often present some unavoidable problems. Traditional comb engraving positioning devices have a fixed structure, making it difficult to adapt to workpieces of varying widths. Due to their simple design, they can only fix comb workpieces of a specific width. For workpieces with slightly different widths, they cannot be effectively fixed, leading to easy displacement of the workpiece during engraving, severely affecting engraving accuracy and finished product quality. Furthermore, combs typically require double-sided engraving. During manual flipping, the workpiece is easily displaced due to operational instability. After flipping, the original positioning reference is destroyed, requiring a re-alignment of the tool. This not only increases the operator's workload but also significantly reduces engraving efficiency. Re-alignment takes time, and its accuracy is also affected by human factors, further impacting the consistency and stability of the engraving. Summary of the Invention

[0004] Given the problems of existing technology, such as the inability of positioning devices to adapt to workpieces of different lengths and widths, and the loss of tool setting points after flipping, a positioning device for comb engraving is proposed.

[0005] Its purpose is to enable the positioning device to fix workpieces of different lengths and widths, and to ensure that the tool setting point is not lost after the workpiece is flipped over.

[0006] The technical solution of the present invention is a positioning device for comb carving, including a carving machine body, a support set on the worktable of the carving machine body, a positioning mechanism set on the top of the support, a workpiece set inside the positioning mechanism, and a flipping mechanism set outside the positioning mechanism for flipping the workpiece. The positioning mechanism includes a symmetrically arranged rotating arm on the top of the support, which transmits force; a support plate one located near one end of the rotating arm; a support plate two located near the workpiece on the support plate one; support plates one and two have the same structure; a short arm obliquely and symmetrically arranged inside the support plate two, which clamps the top and bottom surfaces of the workpiece; a long arm obliquely and symmetrically arranged inside the support plate one, which clamps both sides of the workpiece; a toothed block located on the inner wall of the rotating arm near one end of the support, which drives the long and short arms to rotate; a top ring located inside the toothed block; a knob located on the side of the top ring away from the workpiece, which rotates to move the top ring and fixes the workpiece; the side of the top ring away from the workpiece is rotatably connected to the knob; movable teeth linearly arranged at both ends of the rotating arm; springs respectively located on the two movable teeth near each other, which keep the movable teeth tending to move away from each other; and a drive unit located at the end of the rotating arm away from the support plate one for controlling the rotation of the toothed block.

[0007] Furthermore, the tooth block is composed of a combination of helical gears and bevel gears, and a stepped hole is provided on the side of the tooth block near the second support plate, with the inner wall of the stepped hole slidably connected to the outer wall of the top ring.

[0008] Furthermore, clamping blocks are provided on the side of both the long arm and the short arm away from the support plate.

[0009] Furthermore, the drive unit includes a gear shaft disposed inside the rotating arm, the end of the gear shaft near the short arm being meshed with a gear block, a telescopic shaft disposed on the two gear shafts away from the short arm, a drive button disposed on the movable end of the telescopic shaft, an eccentric block disposed inside the drive button, and a retaining ring disposed on the outer side of the rotating arm near the movable end of the telescopic shaft.

[0010] Furthermore, both ends of the gear shaft are provided with bevel gears, and both ends of the telescopic shaft are also provided with bevel gears, and the bevel gears of the gear shaft and the bevel gears of the telescopic shaft are meshed and connected.

[0011] Furthermore, the fixed end of the telescopic shaft is provided with a bushing, and the end of the bushing near the drive button has a sliding hole. The movable end of the drive shaft is hexagonal prism-shaped, and the sliding hole is slidably connected to the movable end.

[0012] Furthermore, the flipping mechanism includes a rotating block disposed on the side of the rotating arm away from the support plate, an annular groove opened on the inner side of the rotating block, a spring disposed inside the annular groove, pins symmetrically disposed at both ends of the spring, and a slot opened on the top of the bracket.

[0013] Furthermore, a screw hole is provided at the center of the rotating block, and the screw hole is threadedly connected to the knob.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a positioning mechanism, workpieces of different lengths and widths can be centered and fixed. The positioning mechanism can be adjusted according to the width of the workpiece to ensure that the workpiece is always in the correct position during processing. This design allows the positioning device to adapt to the processing needs of different products. Whether the workpiece is large or small, it can be accurately fixed. In this way, the positioning device improves the processing accuracy and efficiency, ensuring that each workpiece can achieve the expected processing effect.

[0015] 2. By setting up a flipping mechanism, when flipping the workpiece, one corner of the workpiece can be made to coincide with the tool setting point after flipping. In this way, for workpieces such as combs that require double-sided processing, there is no need to perform a tool setting operation again after flipping. The design of the flipping mechanism ensures the positional stability of the workpiece during the flipping process, so that the position of the workpiece after flipping is consistent with that before flipping. This function simplifies the operation process, improves processing efficiency, avoids positional deviations caused by flipping, and ensures the continuity and accuracy of processing.

[0016] 3. By setting up a drive unit to provide power to the positioning mechanism, the operation of the drive unit can control the positioning mechanism's fixing action on the workpiece. When it is necessary to fix the workpiece, the position of the positioning mechanism can be adjusted through the drive unit to ensure that the workpiece is fixed in the designated position, which improves the flexibility and efficiency of processing and provides reliable support for the processing of workpieces. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a schematic diagram showing the connection between the workpiece and the positioning mechanism according to the present invention; Figure 3 This is an exploded view of the positioning mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of support plate one and support plate two of the present invention; Figure 5 This is a schematic diagram showing the connection between the long arm and the support plate of the present invention; Figure 6 This is a schematic diagram of the connection between the short arm and the toothed block of the present invention; Figure 7 This is a schematic diagram of the movable tooth structure of the present invention; Figure 8 This is a schematic diagram of the connection between the top ring and the toothed block of the present invention; Figure 9 This is a schematic diagram of the connection between the gear shaft and the telescopic shaft of the present invention; Figure 10 This is a schematic diagram showing the connection between the drive button and the eccentric block of the present invention; Figure 11 This is a schematic diagram showing the connection between the bracket and the rotating block of the present invention; Figure 12 This is a schematic diagram of the block structure of the present invention.

[0018] In the picture: 1. Engraving machine body; 2. Support; 3. Positioning mechanism; 4. Workpiece; 5. Tilting mechanism; 31. Rotary arm; 32. Support plate one; 33. Support plate two; 34. Short arm; 35. Long arm; 36. Tooth block; 37. Knob; 38. Top ring; 39. Movable tooth; 310. Spring; 311. Tooth shaft; 312. Telescopic shaft; 313. Drive button; 314. Eccentric block; 315. Retaining ring; 51. Rotating block; 52. Ring groove; 53. Spring; 54. Pin; 55. Slot. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Example 1, referring to Figures 1-12 The first embodiment of the present invention provides a positioning device for comb engraving, including an engraving machine body 1, a support 2 fixedly connected to the worktable of the engraving machine body 1, a positioning mechanism 3 installed on the top of the support 2, a workpiece 4 fixedly connected to the inner side of the positioning mechanism 3, and a flipping mechanism 5 installed on the outer side of the positioning mechanism 3 for flipping the workpiece 4; the positioning mechanism 3 includes a rotating arm 31 symmetrically rotatably connected to the top of the support 2, the rotating arm 31 for transmitting force, a support plate 32 fixedly connected to one end of the rotating arm 31 near the support 2, a support plate 33 fixedly connected to the side of the support plate 32 near the workpiece 4, the support plate 32 and the support plate 33 having the same structure, and a short arm 34 obliquely symmetrically slidably connected inside the support plate 33, the short arm 34 clamping the top and bottom surfaces of the workpiece 4, and obliquely symmetrically slidably connected to the support plate 33. The long arm 35 inside the support plate 32 clamps the two sides of the workpiece 4. The toothed block 36 is rotatably connected to the inner wall of the rotating arm 31 near the support 2. The toothed block 36 drives the long arm 35 and the short arm 34 to rotate. The top ring 38 is slidably connected inside the toothed block 36. The knob 37 is rotatably connected to the side of the top ring 38 away from the workpiece 4. The rotation of the knob 37 drives the top ring 38 to move. The top ring 38 is used to fix the workpiece 4. The side of the top ring 38 away from the workpiece 4 is rotatably connected to the knob 37. The movable teeth 39 at both ends of the rotating arm 31 are linearly slidably connected. The springs 310 are fixedly connected to the two movable teeth 39 near each other. The springs 310 keep the movable teeth 39 tending to move away from each other. The drive unit is assembled at the end of the rotating arm 31 away from the support plate 32 to control the rotation of the toothed block 36.

[0021] Specifically, rotating the rotating arm 31 allows the entire positioning mechanism 3 to rotate, thereby causing the workpiece 4 to flip. Support plate 1 32 and support plate 2 33 have the same structure. Support plate 1 32 constrains the movement direction and maximum extension of the long arm 35, while support plate 2 33 constrains the short arm 34. The retraction of the two long arms 35 clamps the sides of the workpiece 4, and the retraction of the short arm 34 clamps the top and bottom of the workpiece 4, thus centering and fixing the workpiece 4. The rotation of the toothed block 36 simultaneously rotates the long arms 35 and the short arm 34, thereby clamping the workpiece 4. Rotating the knob 37 moves the top ring 38. When the two top rings 38 move toward each other and come into contact with the workpiece 4, they can fix the workpiece 4 and prevent it from swinging. When the toothed block 36 drives the short arm 34 to move to its maximum stroke, the movable tooth 39 will be driven by the toothed block 36 to move in the direction of rotation. After the movable tooth 39 moves to the point where it no longer contacts the toothed block 36, it will be reset under the action of the spring 310, thus returning to the driving range of the toothed block 36 and being driven by the toothed block 36 again. Since the stroke of the long arm 35 is greater than the stroke of the short arm 34, this method can keep the short arm 34 at its maximum stroke while the toothed block 36 is rotating.

[0022] Reference Figures 6-8 The tooth block 36 is composed of a combination of helical gears and bevel gears, and a stepped hole is provided on the side of the tooth block 36 near the support plate 33. The inner wall of the stepped hole is slidably connected to the outer wall of the top ring 38.

[0023] Specifically, the top ring 38 can extend and retract along the inner wall of the stepped hole, and the helical gear of the tooth block 36 will rotate after being driven by the tooth shaft 311.

[0024] Reference Figures 2-5 Clamping blocks are provided on the side of the long arm 35 and the short arm 34 away from the support plate 32.

[0025] Specifically, after the long arm 35 and the short arm 34 retract, they contact the workpiece 4 through the clamping block, thereby achieving clamping of the workpiece.

[0026] Reference Figures 2-10 The drive unit includes a gear shaft 311 rotatably connected inside the rotating arm 31, one end of the gear shaft 311 near the short arm 34 meshing with a gear block 36, a telescopic shaft 312 meshing with the two gear shafts 311 at the ends away from the short arm 34, a drive button 313 fixedly connected to the movable end of the telescopic shaft 312, an eccentric block 314 rotatably connected to the inside of the drive button 313, and a retaining ring 315 fixedly connected to the outside of the rotating arm 31 near the movable end of the telescopic shaft 312.

[0027] Specifically, rotating the drive knob 313 can drive the telescopic shaft 312 to rotate synchronously. While the telescopic shaft 312 rotates, it also drives the two gear shafts 311 to rotate simultaneously, thereby fixing both sides of the workpiece 4 at the same time. The bracket 2 can adjust the spacing. The telescopic shaft 312 adapts to the displacement of the bracket 2 by changing its own length and maintains its own transmission function. When it is necessary to fix the drive knob 313, the eccentric block 314 is rotated so that the distal end of the eccentric block 314 abuts against the inner wall of the retaining ring 315, thereby locking the drive knob 313.

[0028] Reference Figure 9 Both ends of the gear shaft 311 are provided with bevel gears, and both ends of the telescopic shaft 312 are also provided with bevel gears, and the bevel gears of the gear shaft 311 and the telescopic shaft 312 are meshed and connected.

[0029] Specifically, the telescopic shaft 312 transmits the torque of the drive button 313 to the gear shaft 311 through the connection between different bevel gears.

[0030] Reference Figure 9 and Figure 10 The fixed end of the telescopic shaft 312 is provided with a bushing, and the end of the bushing near the drive button 313 has a sliding hole. The movable end of the drive shaft is hexagonal prism, and the sliding hole is slidably connected to the movable end.

[0031] Specifically, the movable end of the telescopic shaft 312 can be inserted into the sliding hole to change its length.

[0032] Example 2, refer to Figures 1-12 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the flipping mechanism 5 includes a rotating block 51 fixedly connected to the side of the rotating arm 31 away from the support plate 32, an annular groove 52 opened inside the rotating block 51, a spring 53 fixedly connected inside the annular groove 52, pins 54 symmetrically fixedly connected to both ends of the spring 53, and a slot 55 opened on the top of the bracket 2.

[0033] Specifically, when workpiece 4 needs to be flipped, the two pins 54 are moved towards each other, releasing the pins 54 from the slot 55 and unlocking the positioning mechanism 3, giving it the freedom to rotate. As the pins 54 move, the spring 53 stores force, and the annular groove 52 can accommodate the deformation of the spring 53 inside. After rotating workpiece 4 180°, the restriction on the pins 54 is released, and the spring 53 will cause the pins 54 to re-engage with the slot 55, thereby fixing workpiece 4. Since the rotation of workpiece 4 is centered on the axis of the top ring 38, and workpiece 4 is clamped in the center by the long arm 35 and the short arm 34, after workpiece 4 is flipped, the original bottom and top surfaces will exchange positions. If the tool setting point coincides with a corner of the top surface before flipping, then the corner of the top surface after flipping will still coincide with the tool setting point, so there is no need to perform tool setting again.

[0034] Reference Figure 11 and Figure 12 A screw hole is provided at the center of the rotating block 51, and the screw hole is threadedly connected to the knob 37.

[0035] Specifically, the rotating block 51 is connected to the knob 37 through a screw hole. When the knob 37 rotates, it will drive the top ring 38 to move. The rest of the structure is the same as that of Embodiment 1.

[0036] Based on embodiments 1-2, the working principle of this invention is as follows: When workpiece 4 needs to be clamped, align both ends of workpiece 4 with the top ring 38, and ensure that the edge of workpiece 4 is within the contraction range of the long arm 35 and the short arm 34. Then, adjust the spacing of the bracket 2 so that both support plates 33 are in contact with workpiece 4. After that, rotate the bolt to fix the bracket 2. Rotate the drive knob 313. The drive knob 313 causes the two gear blocks 36 to rotate simultaneously through the telescopic shaft 312 and the gear shaft 311. As the gear blocks 36 rotate, they drive the long arm 35 and the short arm 34 to contract. Since the short arm 34 has a shorter stroke, it will first clamp the top and bottom surfaces of workpiece 4. The short shaft adapts to the continuous rotation of the gear shaft 311 through the movable tooth 39, thus maintaining its clamping of workpiece 4. After the gear blocks 36 rotate until the long arm 35 clamps both sides of workpiece 4, they can no longer rotate. At this time, the eccentric block 31 is rotated. 4. Make the distal end of the eccentric block 314 abut against the inner wall of the retaining ring 315, so that the drive knob 313 cannot rotate. Then rotate the two knobs 37 to make the tip of the top ring 38 abut against the workpiece 4 to secure the workpiece 4. After completion, the workpiece 4 can be set and engraved. After the top surface of the workpiece 4 is engraved, push the pin 54 to retract it into the rotating block 51 to release the lock on the rotating block 51. Then, rotate the workpiece 4 180° by turning the rotating arm 31. At this time, the pin 54 will re-enter the slot 55 under the action of the spring 53 to fix the rotating block 51 and prevent the workpiece 4 from rotating. Since the original top and bottom surfaces are interchanged after the workpiece 4 is flipped, if any corner of the original top surface is used as the setting point, then the flipped top surface will also have a corner that coincides with the setting point. Therefore, the original setting point can be used to avoid resetting the tool.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A positioning device for comb engraving, comprising an engraving machine body (1) and a support (2) disposed on the worktable of the engraving machine body (1), characterized in that: It also includes a positioning mechanism (3) set on the top of the support (2), a workpiece (4) set inside the positioning mechanism (3), and a flipping mechanism (5) set outside the positioning mechanism (3) for flipping the workpiece (4). The positioning mechanism (3) includes a rotating arm (31) symmetrically arranged on the top of the support (2), the rotating arm (31) is used to transmit force, a support plate (32) is arranged on the end of the rotating arm (31) near the support (2), a support plate (33) is arranged on the side of the support plate (32) near the workpiece (4), the support plate (32) and the support plate (33) have the same structure, a short arm (34) is obliquely symmetrically arranged inside the support plate (33), the short arm (34) clamps the top and bottom surfaces of the workpiece (4), a long arm (35) is obliquely symmetrically arranged inside the support plate (32), the long arm (35) clamps the two sides of the workpiece (4), and a toothed block (36) is arranged on the inner wall of the end of the rotating arm (31) near the support (2), the toothed block (36) drives the long arm (35) to clamp the two sides of the workpiece (4). The arm (35) and the short arm (34) rotate, the top ring (38) is set inside the tooth block (36), the knob (37) is set on the side of the top ring (38) away from the workpiece (4), the knob (37) rotates and drives the top ring (38) to move, the top ring (38) is used to fix the workpiece (4), the side of the top ring (38) away from the workpiece (4) is rotatably connected to the knob (37), the movable teeth (39) are set in a straight line at both ends of the rotating arm (31), the springs (310) are respectively set on the side of the two movable teeth (39) close to each other, the springs (310) keep the movable teeth (39) away from each other, and the drive unit is set on the end of the rotating arm (31) away from the support plate (32) to control the rotation of the tooth block (36); The drive unit includes a gear shaft (311) disposed inside the rotary arm (31), one end of the gear shaft (311) near the short arm (34) meshing with the gear block (36), a telescopic shaft (312) disposed on the two gear shafts (311) away from the short arm (34), a drive button (313) disposed on the movable end of the telescopic shaft (312), an eccentric block (314) disposed inside the drive button (313), and a retaining ring (315) disposed on the outer side of the rotary arm (31) near the movable end of the telescopic shaft (312).

2. The positioning device for comb engraving according to claim 1, characterized in that: The tooth block (36) is composed of a combination of helical gears and bevel gears, and a stepped hole is provided on the side of the tooth block (36) near the second support plate (33), and the inner wall of the stepped hole is slidably connected to the outer wall of the top ring (38).

3. The positioning device for comb engraving according to claim 1, characterized in that: Both the long arm (35) and the short arm (34) are provided with clamping blocks on the side away from the support plate (32).

4. The positioning device for comb engraving according to claim 1, characterized in that: Both ends of the gear shaft (311) are provided with bevel gears, and both ends of the telescopic shaft (312) are also provided with bevel gears, and the bevel gears of the gear shaft (311) and the telescopic shaft (312) are meshed and connected.

5. The positioning device for comb engraving according to claim 1, characterized in that: The fixed end of the telescopic shaft (312) is provided with a bushing, and a sliding hole is opened at one end of the bushing near the drive button (313). The movable end of the telescopic shaft (312) is hexagonal prism, and the sliding hole is slidably connected to the movable end.

6. The positioning device for comb engraving according to claim 1, characterized in that: The flipping mechanism (5) includes a rotating block (51) disposed on the side of the rotating arm (31) away from the support plate (32), an annular groove (52) opened on the inner side of the rotating block (51), a spring (53) disposed inside the annular groove (52), pins (54) symmetrically disposed at both ends of the spring (53), and a slot (55) opened on the top of the bracket (2).

7. The positioning device for comb engraving according to claim 6, characterized in that: The rotating block (51) has a screw hole at its center, and the screw hole is threadedly connected to the knob (37).

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