Three-axis positioning jig

Abstract

The utility model relates to the technical field of betel nut production, in particular to a three-axis positioning jig. Comprising a bottom plate, a Z-direction positioning column is arranged perpendicular to the bottom plate, the bottom plate is further provided with two Y-direction clamping mechanisms and two X-direction clamping mechanisms, the two Y-direction clamping mechanisms are located on the two sides of the Z-direction positioning column respectively, and the two Y-direction clamping mechanisms are in sliding fit relative to the bottom plate; the two Y-direction clamping mechanisms are arranged on the bottom plate, the two X-direction clamping mechanisms are arranged on the two sides of the Z-direction positioning column respectively and are in sliding fit relative to the bottom plate, clamping grooves are formed in the two Y-direction clamping mechanisms, and protrusions abutting against the inner wall of an areca nut are arranged on the two X-direction clamping mechanisms. A Z-direction positioning column, an X-direction clamping mechanism and a Y-direction clamping mechanism are arranged to position and clamp a half areca nut in three directions, and a hook claw of the X-direction clamping mechanism unfolds a notch of the areca nut towards the X axis after fixing is completed, so that full exposure of an areca nut core is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of betel nut production, in particular to a three-axis positioning fixture. Background Art

[0002] In the betel nut processing and production process, slicing and core removal is a relatively important step. Slicing can be achieved by machine operation, but core removal is often done manually after the slices are collected. The advantage of manual core removal is that the human eye can accurately determine the position of the betel nut core and remove it. The disadvantage is that the production efficiency is low and the labor cost is high. Therefore, we still need to explore how to achieve automatic core removal. In the process of automatic core removal, the visual system can be combined with the robotic arm. The first difficulty is to fix half of the betel nut and cooperate with the robotic arm. There is no corresponding solution in the existing technology for how to stably fix half of the betel nut; secondly, the betel nut wall is mostly wrinkled, and this wrinkle cannot fully expose the betel nut core in front of the robotic arm, which will also interfere with the judgment of the visual system, leading to the problem of low core removal rate. Therefore, we need to study how to improve the efficiency of core removal on the basis of stably fixing half of the betel nut. The key to improving the efficiency of robotic arm core removal is to fully expose the betel nut core instead of being blocked by the wrinkles of the betel nut. Utility Model Content

[0003] The problem to be solved by the utility model is: to propose a solution that can stably fix half a betel nut while fully exposing the betel nut core, thereby improving the core removal efficiency of the robotic arm.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-axis positioning fixture, including a base plate, a Z-axis positioning column is arranged perpendicular to the base plate, and the base plate is also provided with two Y-axis clamping mechanisms and two X-axis clamping mechanisms, the two Y-axis clamping mechanisms are respectively located on both sides of the Z-axis positioning column, and the two Y-axis clamping mechanisms slide relative to the base plate; the two X-axis clamping mechanisms are respectively arranged on both sides of the Z-axis positioning column, and the two X-axis clamping mechanisms slide relative to the base plate, the two Y-axis clamping mechanisms are both provided with a card slot, and the two X-axis clamping mechanisms are both provided with a protrusion that abuts against the inner wall of the betel nut.

[0005] Preferably, the Z-direction positioning column can be slidably matched with the base plate along the Z-axis direction.

[0006] Preferably, the two Y-direction clamping mechanisms use a slider 1 and a slider 2, and slots are provided on the opposite surfaces of the slider 1 and the slider 2, and the slider 1 and the slider 2 are connected to the telescopic end of the Y-direction cylinder.

[0007] Preferably, the X-axis clamping mechanism includes a plurality of hooks, the protrusions are located at the ends of the hooks, and the hooks are connected to the X-axis linear motor through sliders.

[0008] Preferably, one of the X-direction clamping mechanisms has one hook, and the other X-direction clamping mechanism has two hooks.

[0009] Preferably, a constant force cylinder is also included, the cylinder body of the constant force cylinder is fixed on the slider three, and the output end of the constant force cylinder is connected to any hook claw.

[0010] Compared with the prior art, the utility model provides a three-axis positioning fixture with the following beneficial effects: a Z-axis positioning column, an X-axis clamping mechanism and a Y-axis clamping mechanism are arranged on the bottom plate of the utility model, and the X-axis clamping mechanism and the Y-axis clamping mechanism both slide in their respective directions around the Z-axis positioning column to form a positioning clamp for half a betel nut in three directions. After the fixation is completed, the hook claw of the X-axis clamping mechanism unfolds the incision of the betel nut toward the X-axis to fully expose the betel nut core. The fixture structure of the utility model is convenient for the combined design of multiple groups, realizes the coordination of multiple production lines of betel nut, and accelerates the automated core removal process of betel nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the structural diagram of the practical fixture.

[0012] Figure 2 It is an enlarged schematic diagram of the hook part involved in this practical fixture.

[0013] Explanation of the reference numerals: 1. Base plate; 2. Z-axis positioning column; 21. Z-axis cylinder; 3. Y-axis clamping mechanism; 31. Slot; 32. Slider 1; 33. Slider 2; 34. Y-axis cylinder; 4. X-axis clamping mechanism; 41. Protrusion; 42. Hook; 43. Slider 3; 5. Constant force cylinder. DETAILED DESCRIPTION

[0014] The technical solution in the embodiment of the present invention will be described below in conjunction with the accompanying drawings in the embodiment of the present invention:

[0015] As shown in the figure, a three-axis positioning fixture includes a base plate 1. The utility model defines the direction perpendicular to the base plate 1 as the Z-axis direction, the length direction of the base plate 1 as the Y-axis direction, and the width direction of the base plate 1 as the X-axis direction; a Z-axis positioning column 2 is arranged perpendicular to the base plate 1, and the Z-axis positioning column 2 can be fixed on the base plate 1, or can be slidably matched with the base plate 1 along the Z-axis direction; the Z-axis positioning column 2 and the base plate 1 can be realized by a Z-axis cylinder 21, and the cylinder body of the Z-axis cylinder 21 is fixed on the side of the base plate 1 away from the Z-axis positioning column 2, and the output end of the Z-axis cylinder 21 passes through the base plate 1 to connect the end of the Z-axis positioning column 2, and the extension and contraction of the Z-axis cylinder 21 controls the displacement of the Z-axis positioning column 2 along the Z-axis direction, thereby controlling the position of the betel nut in the Z-axis direction. The jig of the utility model also includes two Y-direction clamping mechanisms 3 and two X-direction clamping mechanisms 4. The two Y-direction clamping mechanisms 3 are respectively located on both sides of the Z-direction positioning column 2, and the two Y-direction clamping mechanisms 3 are slidably matched relative to the bottom plate 1. Taking the two Y-direction clamping mechanisms 3 using a slider 1 32 and a slider 2 33 as an example, a card groove 31 is arranged on the opposite surfaces of the slider 1 32 and the slider 2 33, and the card groove 31 is used to accommodate the end of half a betel nut. The slider 1 32 and the slider 2 33 are connected to the telescopic end of the Y-direction cylinder 34, and the Y-direction cylinder 34 controls the slider 1 32 and the slider 2 33 to approach or move away from each other along the Y-axis direction. When the slider 1 32 and the slider 2 33 approach each other along the Y-axis direction, the half betel nut is fixed in the Y-axis direction. The two X-direction clamping mechanisms 4 are respectively arranged on both sides of the Z-direction positioning column 2, and the two X-direction clamping mechanisms 4 are slidably matched relative to the base plate 1. The X-direction clamping mechanism 4 includes a plurality of hooks 42. The hooks 42 are connected to the X-axis linear motor through the slider three 43. The X-axis linear motor drives the hooks 42 on both sides of the Z-direction positioning column 2 to move relatively close or away. One of the two X-direction clamping mechanisms 4 includes one hook 42, and the other X-direction clamping mechanism 4 includes two hooks 42. The end of the hook 42 close to the betel nut cut surface is provided with a protrusion 41, and the protrusion 41 is used to abut against the inner wall of the betel nut. In order to better ensure that the hook 42 abuts against the inner wall of the betel nut, the X-direction clamping mechanism 4 also includes a constant force cylinder 5. The cylinder body of the constant force cylinder 5 is fixed on the slider three 43, and the output end of the constant force cylinder 5 is connected to any hook 42.

[0016] When in use, the feeding mechanism places half a betel nut to a preset position, the Z-direction positioning column 2, the two X-direction clamping mechanisms 4 and the two Y-direction clamping mechanisms 3 work in sequence according to the set action sequence, the two Y-direction clamping mechanisms 3 fix the half betel nut at a specified position in the Y direction, the Z-direction positioning column 2 limits the position of the half betel nut in the Z-axis direction, the respective hook claws 42 of the two X-direction clamping mechanisms 4 realize the positioning of the betel nut in the X direction, and after the position of the half betel nut in each direction is fixed, the two X-direction clamping mechanisms 4 work away from each other, and the corresponding hook claws 42 of the two X-direction clamping mechanisms 4 unfold the wrinkled betel nut wall, thereby fully exposing the betel nut core.

[0017] The above embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A three-axis positioning fixture, characterized in that: The invention comprises a bottom plate (1), a Z-direction positioning column (2) is arranged perpendicular to the bottom plate (1), and the bottom plate (1) is also provided with two Y-direction clamping mechanisms (3) and two X-direction clamping mechanisms (4), the two Y-direction clamping mechanisms (3) are respectively located on both sides of the Z-direction positioning column (2), and the two Y-direction clamping mechanisms (3) are slidably matched with respect to the bottom plate (1); the two X-direction clamping mechanisms (4) are respectively arranged on both sides of the Z-direction positioning column (2), and the two X-direction clamping mechanisms (4) are slidably matched with respect to the bottom plate (1), the two Y-direction clamping mechanisms (3) are both provided with a clamping groove (31), and the two X-direction clamping mechanisms (4) are both provided with a protrusion (41) that abuts against the inner wall of the betel nut.

2. A three-axis positioning fixture as claimed in claim 1, characterized in that: The Z-direction positioning column (2) can be slidably matched with the base plate (1) along the Z-axis direction.

3. A three-axis positioning fixture as claimed in claim 1, characterized in that: The two Y-direction clamping mechanisms (3) use a slider 1 (32) and a slider 2 (33). The slider 1 (32) and the slider 2 (33) are provided with a clamping groove (31) on the opposite surfaces. The slider 1 (32) and the slider 2 (33) are connected to the telescopic end of the Y-direction cylinder (34).

4. A three-axis positioning fixture as claimed in claim 3, characterized in that: The X-axis clamping mechanism (4) comprises a plurality of hook claws (42), the protrusions (41) are located at the ends of the hook claws (42), and the hook claws (42) are connected to the X-axis linear motor via a slider three (43).

5. A three-axis positioning fixture as claimed in claim 4, characterized in that: One of the X-direction clamping mechanisms (4) has one hook claw (42), and the other X-direction clamping mechanism (4) has two hook claws (42).

6. A three-axis positioning fixture as claimed in claim 4, characterized in that: It also includes a constant force cylinder (5), the cylinder body of the constant force cylinder (5) is fixed on the slider three (43), and the output end of the constant force cylinder (5) is connected to any hook claw (42).

Images