A diamond blank bonding and positioning device

Abstract

The utility model belongs to diamond processing jig technical field especially relates to a kind of diamond blank bonding positioning device.A kind of diamond blank bonding positioning device, including support block, locating block and top flat piece, V-shaped locating groove is opened in the locating block, pressure joint bolt is threadedly connected in the locating block, mounting groove is opened in the upper end of the top flat piece, guide rod is provided on the groove wall of the mounting groove, two movable blocks that can move along the length direction of guide rod and move towards and move away from each other are sleeved on the guide rod, locating plate is provided on each movable block in the inside of the top flat piece, V-shaped clamping groove is opened in two locating plates;Limiting plate is fixedly connected on the top flat piece between two movable blocks, when two movable blocks abut against limiting plate, the clamping groove can abut against diamond blank and make it move to be coaxial with bonding rod.The utility model structure is simple and can realize to the diamond blank and move to be coaxial with bonding rod.

Description

Technical Field

[0001] This utility model belongs to the field of diamond processing fixture technology, and in particular relates to a diamond blank bonding and positioning device. Background Technology

[0002] Before diamonds and gemstones are polished into tapered finished products, the rough diamonds and gemstones need to be processed into cylindrical shapes, such as... Figure 9 As shown, the diamond blank 1 is then bonded to one end of the bonding rod 3 using an adhesive 2 such as epoxy resin, with the diamond blank 1 bonded along the length of the bonding rod 3. Because the diamond blank 1 is bonded manually on the bonding rod 3, the cylindrical diamond blank 1 will become skewed during bonding, meaning it will not be aligned along the length of the bonding rod 3. In this case, a tool such as... Figure 9 The flattening device 4 shown includes a base plate 41, a top plate 42 fixed at both ends of the upper surface of the base plate 41, and a support plate 43. A V-shaped groove 431 is provided on the support plate 43. The bonding rod 3, to which the diamond blank 1 is bonded, is placed in the V-shaped groove 431. Then, the bonding rod 3 is pushed manually to press one end of the diamond blank 1 against the inner side of the top plate 42. At this time, since the adhesive 2 has not been cured, the diamond blank 1 can be flattened. Then, the pressure roller 44, which can be threadedly connected to the support plate 43, is pressed onto the bonding rod 3. While waiting for the adhesive 2 to cure, the diamond blank 1 is flattened to facilitate the grinding of each surface of the conical diamond product.

[0003] However, the aforementioned leveling device 4 has the following shortcomings: It can only level the diamond blank 1 to align it along the length of the bonding rod 3. Since the diamond blank 1 is manually bonded to the bonding rod 3, it is difficult to ensure that the diamond blank 1 and the bonding rod 3 are coaxial during bonding. When polishing each facet of the diamond blank 1, the bonding rod 3 needs to be rotated at a set angle to rotate the diamond blank 1. When the axis of the cylindrical diamond blank 1 deviates from the axis of the bonding rod 3, the polishing accuracy of each facet of the diamond blank 1 decreases, making it difficult to achieve high-quality diamond polishing. Especially when using an automatic polishing machine, due to the set angle and polishing force, when the diamond blank 1 and the bonding rod 3 are not coaxial, the polishing accuracy further decreases, potentially leading to diamond scrap.

[0004] Therefore, there is an urgent need to design a diamond blank bonding and positioning device that can not only flatten the diamond blank but also position the diamond blank radially. Utility Model Content

[0005] To address the technical problems existing in the prior art, this application provides a diamond blank bonding and positioning device with a simple structure that can achieve top flattening and radial positioning of diamond blanks.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A diamond blank bonding and positioning device includes a support block, a positioning block and a top flat block disposed on the upper end face of the support block. A V-shaped positioning groove is formed on the positioning block, and a crimping bolt is threaded onto the positioning block. An installation groove is formed on the upper end of the top flat block, perpendicular to the length direction of the positioning groove. A guide rod is disposed on the groove wall of the installation groove. Two movable blocks, capable of moving towards and away from each other along the length direction of the guide rod, are sleeved on the guide rod. A positioning plate is fixedly connected to each movable block inside the top flat block. A V-shaped clamping groove is formed on the opposite end faces of the two positioning plates. A limiting plate is fixedly connected to the top flat block between the two movable blocks. When the two movable blocks abut against the limiting plate, the clamping groove abuts against the diamond blank and moves it to be coaxial with the bonding rod.

[0007] Preferably, a sliding rod is fixedly connected to the wall of the mounting groove along the length of the guide rod, and the movable block is slidably sleeved on the sliding rod.

[0008] Preferably, a compression spring is fitted onto the guide rod between the two moving blocks.

[0009] Preferably, the crimping bolt is threaded onto the positioning block on one side of the positioning groove, and an oblique notch is provided on the upper end face of the positioning block on the other side of the positioning groove.

[0010] Preferably, the limiting plate has an L-shaped structure, with its vertical end detachably and fixedly connected to the outer end face of the top flat block, and its horizontal end positioned above the bottom of the mounting groove.

[0011] Preferably, a side-top bolt is threaded to the outer end face of the positioning block, and a side-top knob is fixedly connected to the side-top bolt. The side-top knob can abut against the end face of the adhesive rod.

[0012] Preferably, a centering mark is provided on the inner side of the top flat block, and the center of the centering mark coincides with the axis of the adhesive rod placed in the positioning groove.

[0013] Preferably, a pick-up / placement gap is provided between the positioning block and the top flat block.

[0014] Preferably, the guide rod has external threads with opposite directions at both ends, and the two moving blocks are respectively threaded onto the external threads of the guide rod; a guide knob is fixedly connected to the guide rod on the outside of the top flat block, and a rotating bearing is fixedly embedded in the two groove walls of the mounting groove, with the guide rod fixedly passing through the inner ring of the rotating bearing; when the guide rod rotates forward and backward, it can drive the two moving blocks to move towards each other and away from each other.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a V-shaped positioning groove to place the adhesive rod within it, achieving radial positioning of the adhesive rod. When the adhesive rod is pushed to bring the diamond blank against the top flat block, axial positioning and flattening of the diamond are achieved. The adhesive rod can be fixed by using a pressing bolt. By incorporating a guide rod, a moving block, a limiting plate, and a positioning plate with a clamping groove, when the two moving blocks move towards each other, the groove wall of the positioning plate's clamping groove abuts against the diamond blank, pushing the diamond blank to be coaxial with the adhesive rod, thereby achieving radial positioning of the diamond blank.

[0016] This invention achieves both limiting and guiding of the moving block by setting a sliding rod; in the embodiment where the moving block can slide on the guide rod, the moving block can automatically rebound by setting a compression spring; in the embodiment where the moving block is threadedly connected to the guide rod, the compression spring provides a certain damping effect when the guide knob is manually rotated to drive the moving block. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram from one perspective of Embodiment 1 of this utility model.

[0018] Figure 2 This is a structural schematic diagram from the second perspective of Embodiment 1 of this utility model.

[0019] Figure 3 This is a schematic diagram of the connection structure of the support block, positioning block and top flat block in an embodiment of the present utility model.

[0020] Figure 4 This is a schematic diagram of the connection structure between the moving block and the positioning plate in an embodiment of the present invention.

[0021] Figure 5 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of Embodiment 3 of the present invention.

[0023] Figure 7 This is a top view of Embodiment 3 of the present invention.

[0024] Figure 8 This is a schematic diagram of the structure of Embodiment 3 of this utility model when positioning a diamond blank.

[0025] Figure 9 This is a schematic diagram of the existing top leveler.

[0026] In the diagram: 1. Diamond blank; 2. Adhesive; 3. Adhesive rod; 4. Top flatter; 41. Base plate; 42. Top plate; 43. Support plate; 431. V-groove; 44. Pressure roller. 5. Support block; 51. Positioning block; 511. Positioning groove; 512. Angled notch; 52. Top flat block; 521. Mounting groove; 522. Centering mark; 523. Rotating bearing; 53. Pick-up / drop-off clearance; 54. Crimping bolt; 55. Crimping knob; 56. Side top bolt; 57. Side top knob. 6. Guide rod; 61. Slide rod; 62. Compression spring; 63. Guide knob. 7. Moving block; 8. Positioning plate; 81. Clamping groove; 9. Limiting plate; 91. Vertical end of limiting plate; 92. Horizontal end of limiting plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model. Example 1

[0029] See appendix Figure 1 , 2 As shown in Figure 3, a diamond blank bonding and positioning device includes a support block 5, a positioning block 51 and a top flat block 52 disposed on the upper end face of the support block 5. Figure 1 In the middle, the top flat block 52 and the positioning block 51 are integrally formed with the support block 5 and are located on the left and right sides of the upper end face of the support block 5, respectively. A V-shaped, symmetrical positioning groove 511 is formed on the positioning block 51 along the length direction of the support block 5. The size of the positioning groove 511 matches the size of the adhesive rod 3, that is, the adhesive rod 3 abuts against the two groove walls of the positioning groove 511, thereby completing the radial positioning of the adhesive rod 3.

[0030] To facilitate the picking and placing of the adhesive rod 3, a picking and placing gap 53 is provided between the positioning block 51 and the top flat block 52, that is, the adhesive rod 3 is suspended in the air at the picking and placing gap 53.

[0031] In order to fix the adhesive rod 3 after it has been axially positioned and the diamond blank 1 has been flattened, a crimping bolt 54 is threaded onto the positioning block 51 on one side of the positioning groove 511. In order to facilitate the rotation of the crimping bolt 54, a crimping knob 55 is horizontally fixedly connected to the crimping bolt 54. The crimping knob 55 can crimp the adhesive rod 3 to fix the adhesive rod 3 in the positioning groove 511.

[0032] An installation groove 521 is formed on the upper end face of the top flat block 52, perpendicular to the length direction of the positioning groove 511. A guide rod 6 is provided on the groove wall of the installation groove 521. In this embodiment, the guide rod 6 is an optical axis, and its two ends are fixedly embedded in the two groove walls of the installation groove 521 by bolts. Two movable blocks 7 are sleeved on the guide rod 6, which can slide towards each other and away from each other along the length direction of the guide rod 6. The upper end face of the movable block 7 is higher than the upper end face of the top flat block 52 to facilitate manual pushing of the movable block 7. In order to prevent the movable block 7 from rotating when pushing, the lower end face of the movable block 7 can abut against the bottom of the groove 521. Furthermore, in this embodiment, two parallel sliding rods 61 are fixedly inserted into the groove wall of the installation groove 521 along the length direction of the guide rod 6. Bolts are threadedly connected to the upper end face of the top flat block 52 and abut against the sliding rods 61, thereby fixing the sliding rods 61. The movable block 7 is slidably mounted on the two sliding rods 61, so that the movable block 7 can slide back and forth on the guide rod 7. Since the sliding rods 61 are provided, the lower end face of the movable block 7 does not need to abut against the bottom of the mounting groove 521.

[0033] See Figure 4 As shown, each movable block inside the top flat block 52 is vertically fixed with a positioning plate 8 by bolts. A symmetrical V-shaped clamping groove 81 is provided on the opposite end face of the two positioning plates 8. The size of the clamping groove 81 matches the size of the diamond blank 1, that is, the outer circumference of the diamond blank 1 can abut against the groove wall of the two clamping grooves 81.

[0034] A limiting plate 9 is fixedly connected to the top flat block 52 between the two moving blocks 7. Specifically, the limiting plate 9 has an L-shaped cross-section. Its vertical end 91 is detachably fixed to the outer end face of the top flat block 52 by bolts. The horizontal end 92 of the limiting plate is set above the bottom of the mounting groove 521. The upper end face of the horizontal end 92 of the limiting plate is higher than the lower end face of the moving block 7 to block the moving block 7.

[0035] Regarding the installation position and dimensions of the limiting plate 9: When the inner end faces of the two moving blocks 7 abut against the limiting plate 9, the clamping grooves 81 of the positioning plates 8 on the two moving blocks 7 can abut against the diamond blank 1 and move the diamond blank 1 to be coaxial with the bonding rod 3, thereby achieving radial positioning of the diamond blank 1 through the clamping grooves 81.

[0036] Furthermore, in order to enable the two moving blocks 7 to return to their initial position when not under force, i.e., the two clamping grooves 81 are in an open state, so that the diamond blank 1 can be inserted between the two clamping grooves 81, in this embodiment, a compression spring 62 is sleeved on the guide rod 6 between the two moving blocks 7.

[0037] Furthermore, in order to facilitate the placement and removal of the adhesive rod 3 in the positioning groove 511, the crimping bolt 54 is threaded onto the positioning block 51 on one side of the positioning groove 511, and an oblique notch 512 is provided on the upper end face of the positioning block 51 on the other side of the positioning groove 511, that is, the upper end face of the positioning block 51 on this side gradually rises from the inside to the outside.

[0038] Furthermore, in order to visually demonstrate the coaxiality of the diamond blank 1 and the bonding rod 3, a circular centering mark 522 is provided on the inner side of the top flat block 52, and the center of the centering mark 522 coincides with the axis of the bonding rod 3 placed in the positioning groove 511.

[0039] The working principle and process of this embodiment are as follows: First, the diamond blank 1 is bonded to one end of the adhesive rod 3 using adhesive 2. Before the adhesive 2 is cured, the adhesive rod 3 is inserted into the positioning groove 511 through the oblique notch 512 to complete the radial positioning of the adhesive rod 3. One hand holds the adhesive rod 3, and the other hand pushes one end of the adhesive rod 3 towards the top flat block 52, so that one side of the diamond blank 1 gradually abuts against the center mark 522 on the inner side of the top flat block 52, thereby making one side of the diamond blank 1 fit against the inner side of the top flat block 52, thus achieving the top flatness of the diamond blank 1, that is, achieving its axial positioning. Then rotate the pressing knob 55 to press the adhesive rod 3 to fix the adhesive rod 3. Push the two moving blocks 7 towards each other until they abut against the horizontal end 9 of the limiting plate. During this process, the moving blocks 7 drive the positioning plate 8 and the clamping groove 81 to move towards each other. The groove wall of the clamping groove 81 abuts against the outer circumference of the diamond blank 1 and drives the diamond blank 1 to move to the same axis as the adhesive rod 3. Afterwards, release the moving block 7. The moving block 7 will return to its original position under the elastic force of the compression spring 62. After the adhesive 2 has cured, rotate the pressing knob 55 in the opposite direction to disengage the pressing knob 55 from the adhesive rod 3. Then, remove the adhesive rod 3, which has fixed the diamond blank 1, from the positioning groove 511. Example 2

[0040] See appendix Figure 5 As shown, this embodiment is a further improvement on embodiment 1. Unlike embodiment 1, in this embodiment, a side-top bolt 56 is threaded onto the outer end face of the positioning block 51, and a side-top knob 57 is fixedly connected to the side-top bolt 56. After rotating the side-top knob 57, the side-top knob 57 can abut against the end face of the adhesive rod 3. Therefore, when leveling the diamond blank 1, the axial position of the adhesive rod 3 can be fixed.

[0041] The working principle and process of this embodiment are as follows: First, the diamond blank 1 is bonded to one end of the adhesive rod 3 using adhesive 2. Before the adhesive 2 is cured, the adhesive rod 3 is inserted into the positioning groove 511 through the oblique notch 512 to complete the radial positioning of the adhesive rod 3. One hand holds the adhesive rod 3, and the other hand rotates the side top knob 57 so that the inner end face of the side top knob 57 abuts against one end of the adhesive rod 3, so that one side end face of the diamond blank 1 gradually abuts against the center mark 522 on the inner end face of the top flat block 52, thereby making one side end face of the diamond blank 1 fit against the inner end face of the top flat block 52, thus achieving the top flatness of the diamond blank 1, that is, achieving its axial positioning. Then rotate the pressing knob 55 to press the adhesive rod 3 to fix the adhesive rod 3. Push the two moving blocks 7 towards each other until they abut against the horizontal end 9 of the limiting plate. During this process, the moving blocks 7 drive the positioning plate 8 and the clamping groove 81 to move towards each other. The groove wall of the clamping groove 81 abuts against the outer circumference of the diamond blank 1 and drives the diamond blank 1 to move to the same axis as the adhesive rod 3. Afterwards, release the moving block 7. The moving block 7 returns to its original position under the elastic force of the compression spring 62. After the adhesive 2 has cured, rotate the pressing knob 55 and the side top knob 57 in the opposite direction to disengage the pressing knob 55 and the side top knob 57 from the adhesive rod 3. Then, remove the adhesive rod 3, which has fixed the diamond blank 1, from the positioning groove 511. Example 3

[0042] See appendix Figure 6 , 7 As shown in Figure 8, this embodiment is a further improvement on the basis of embodiment 2. The difference between this embodiment and embodiment 2 is that in embodiment 2, the guide rod 6 is fixed and does not rotate, and the moving block 7 is slidably sleeved on the guide rod 6. In this embodiment, the two moving blocks 7 are driven to move towards each other and away from each other by setting a rotatable, double-threaded guide rod, and the two moving blocks 7 are threadedly connected to the guide rod 6.

[0043] Specifically, the guide rod 6 has external threads with opposite directions on both sides, and the two moving blocks 7 are respectively threaded onto the external threads of the guide rod. In order to realize the rotation of the guide rod 6, a rotating bearing 523 is fixedly embedded in the two groove walls of the mounting groove 521. The two ends of the guide rod 6 are fixedly inserted into the inner ring of the rotating bearing 523. A guide knob 63 is fixedly connected to the guide rod on the outside of the top flat block 52. When the guide knob 63 drives the guide rod 6 to rotate forward and backward, it can drive the two moving blocks 7 to move towards each other and away from each other.

[0044] By setting the above structure, the relative movement of the two moving blocks 7 can be controlled by simply rotating the guide knob 63. After positioning the diamond blank 1, the adhesive rod 3 can be removed after the adhesive 2 has cured, so that the diamond blank 1 can still maintain the effect of positioning and calibration after the adhesive has cured.

[0045] The working principle and process of this embodiment are as follows: First, the diamond blank 1 is bonded to one end of the adhesive rod 3 using adhesive 2. Before the adhesive 2 is cured, the adhesive rod 3 is inserted into the positioning groove 511 through the oblique notch 512 to complete the radial positioning of the adhesive rod 3. One hand holds the adhesive rod 3, and the other hand rotates the side top knob 57 so that the inner end face of the side top knob 57 abuts against one end of the adhesive rod 3, so that one side end face of the diamond blank 1 gradually abuts against the center mark 522 on the inner end face of the top flat block 52, thereby making one side end face of the diamond blank 1 fit against the inner end face of the top flat block 52, thus achieving the top flatness of the diamond blank 1, that is, achieving its axial positioning. Then rotate the pressing knob 55 to press the adhesive rod 3 to fix the adhesive rod 3. Rotate the guide knob 63 to make the two moving blocks 7 move towards each other until they abut against the horizontal end 9 of the limiting plate. During this process, the moving blocks 7 drive the positioning plate 8 and the clamping groove 81 to move towards each other. The groove wall of the clamping groove 81 abuts against the outer circumference of the diamond blank 1 and drives the diamond blank 1 to move to the same axis as the adhesive rod 3. After the adhesive 2 has cured, rotate the guide knob 63 in the opposite direction to make the two moving blocks 7 move away from the positioning plate 8, so that the wall of the clamping groove 81 is separated from the diamond blank 1. Rotate the pressing knob 55 and the side top knob 57 in the opposite direction to make the pressing knob 55 and the side top knob 57 separate from the adhesive rod 3. Then, remove the adhesive rod 3, which has fixed the diamond blank 1, from the positioning groove 511.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A diamond blank bonding and positioning device, comprising a support block, a positioning block and a top flat block disposed on the upper end face of the support block, wherein a V-shaped positioning groove is formed on the positioning block, and a crimping bolt is threadedly connected to the positioning block, characterized in that: An installation groove is provided at the upper end of the top flat block perpendicular to the length direction of the positioning groove. A guide rod is provided on the groove wall of the installation groove. Two movable blocks that can move towards each other and away from each other along the length direction of the guide rod are sleeved on the guide rod. A positioning plate is fixedly connected to each movable block inside the top flat block. A V-shaped clamping groove is provided on the opposite end face of the two positioning plates. A limiting plate is fixedly connected to the top flat block between the two moving blocks. When the two moving blocks abut against the limiting plate, the clamping groove can abut against the diamond blank and move it to be coaxial with the bonding rod.

2. The diamond blank bonding and positioning device according to claim 1, characterized in that: A sliding rod is fixedly connected to the wall of the mounting groove along the length of the guide rod, and the movable block is slidably sleeved on the sliding rod.

3. The diamond blank bonding and positioning device according to claim 1, characterized in that: A compression spring is fitted onto the guide rod between the two moving blocks.

4. The diamond blank bonding and positioning device according to claim 1, characterized in that: The crimping bolt is threaded onto the positioning block on one side of the positioning groove, and an oblique notch is provided on the upper surface of the positioning block on the other side of the positioning groove.

5. The diamond blank bonding and positioning device according to claim 1, characterized in that: The limiting plate has an L-shaped structure, with its vertical end detachably and fixedly connected to the outer end face of the top flat block, and its horizontal end positioned above the bottom of the mounting groove.

6. The diamond blank bonding and positioning device according to claim 1, characterized in that: A side-top bolt is threaded onto the outer end face of the positioning block, and a side-top knob is fixedly connected to the side-top bolt. The side-top knob can abut against the end face of the adhesive rod.

7. The diamond blank bonding and positioning device according to claim 1, characterized in that: A centering mark is provided on the inner side of the top flat block, and the center of the centering mark coincides with the axis of the adhesive rod placed in the positioning groove.

8. The diamond blank bonding and positioning device according to claim 1, characterized in that: A pick-and-place gap is provided between the positioning block and the top flat block.

9. A diamond blank bonding and positioning device according to any one of claims 1-8, characterized in that: The guide rod has external threads with opposite directions at both ends, and the two moving blocks are respectively threaded onto the external threads of the guide rod; a guide knob is fixedly connected to the guide rod on the outside of the top flat block, and a rotating bearing is fixedly embedded in the two groove walls of the mounting groove, and the guide rod is fixedly inserted through the inner ring of the rotating bearing; when the guide rod rotates forward and backward, it can drive the two moving blocks to move towards each other and away from each other.

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