Adjustable graphite crucible positioning and clamping fixture

Abstract

This utility model discloses an adjustable graphite crucible positioning and clamping fixture, belonging to the technical field of positioning and clamping fixtures. It utilizes a locking block and a T-shaped locking groove to engage with the clamping jaws, allowing for disassembly and replacement as needed. Therefore, different sized V-shaped clamping blocks can be replaced to accommodate graphite crucibles of varying sizes, thereby improving the overall practicality of the device. The adjustable graphite crucible positioning and clamping fixture includes a sliding sleeve with a clamping device mounted at one end. The clamping device includes a first hinge block and clamping jaws symmetrically hinged to both ends of the first hinge block. The sliding sleeve is fixed to one side of the first hinge block, and a locking groove is provided on the sliding sleeve. One end of the locking groove extends through the first hinge block, and a second hinge block is fixed to the end of the locking groove extending from the first hinge block. Support frames are symmetrically hinged to both ends of the second hinge block, and these support frames are hinged to the middle section of the clamping jaws. A clamping block is mounted at the end of the clamping jaws away from the first hinge block.

Description

Technical Field

[0001] This utility model belongs to the field of positioning and clamping fixture technology, specifically relating to an adjustable graphite crucible positioning and clamping fixture. Background Technology

[0002] Graphite crucibles are made primarily of natural flake graphite and processed with plastic refractory clay or carbonaceous material as binders. They are characterized by high temperature resistance, strong thermal conductivity, good corrosion resistance, and long service life. They are widely used for melting metal blocks of various materials and for holding high-temperature molten metals. When using graphite crucibles, it is necessary to use clamping fixtures to assist in holding the graphite crucibles.

[0003] Existing graphite crucible positioning and clamping fixtures generally use clamping blocks of fixed specifications. This non-modular structure means that a single fixture can only match graphite crucibles of a specific size. When it is necessary to process crucibles of different specifications, the entire fixture must be replaced, which seriously restricts the continuity of production. Therefore, an adjustable graphite crucible positioning and clamping fixture is needed to help solve this problem. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an adjustable graphite crucible positioning clamp. This adjustable graphite crucible positioning clamp is inserted into the jaws through the cooperation of the snap-fit ​​block and the T-shaped snap-fit ​​groove. It can be disassembled and replaced when needed. Therefore, different sizes of V-shaped clamps can be replaced as needed to adapt to graphite crucibles of different sizes, thereby improving the overall practicality of the device.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides an adjustable graphite crucible positioning and clamping fixture, which includes a sliding sleeve, one end of which is fitted with a clamp.

[0008] The clamp includes a first hinge block and grippers symmetrically hinged at both ends of the first hinge block. A sliding sleeve is fixed to one side of the first hinge block. A snap-fit ​​groove is provided on the sliding sleeve. One end of the snap-fit ​​groove extends through the first hinge block. A second hinge block is fixed to the end of the snap-fit ​​groove extending out of the first hinge block. Support frames are symmetrically hinged at both ends of the second hinge block. The support frames are hinged at the middle section of the grippers. An auxiliary clamping block is installed at the end of the grippers away from the first hinge block.

[0009] Furthermore, the clamping block is V-shaped, and a snap-fit ​​block is protruding from the outer side of the clamping block. A snap-fit ​​groove is provided on the clamping claw, and the snap-fit ​​block is inserted and installed in the snap-fit ​​groove.

[0010] Furthermore, clamping teeth are protruding from the inner side of the snap-fit ​​block, and the cross-section of the snap-fit ​​block and the snap-fit ​​groove is T-shaped.

[0011] Furthermore, the gripper is L-shaped, and both the gripper and the support frame are hollowed out.

[0012] Furthermore, a first handle is fixed to one end of the sliding sleeve, a sliding groove is provided on the sliding sleeve, the other end of the snap-fit ​​groove away from the second hinge block extends into the sliding groove, and a second handle is fixed at the position of the snap-fit ​​groove corresponding to the sliding groove. The first handle and the second handle cooperate to drive the snap-fit ​​groove to slide.

[0013] Furthermore, a positioning cavity is provided inside the second handle, and a positioning component is installed inside the positioning cavity. Positioning holes are provided at equal intervals on the inner sidewall of the slide groove, and the positioning component and the positioning holes cooperate to position each other.

[0014] Furthermore, the positioning assembly includes a slide rod slidably disposed within the positioning cavity, one end of the slide rod being fixed to a slider, the end of the slide rod away from the slider being inserted into the slider, a sleeve plate being sleeved and fixed on the slide rod, and a top pressure spring for assisting the sleeve plate to press firmly is installed in the positioning cavity.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model uses a snap-fit ​​block and a T-shaped snap-fit ​​groove to be inserted into the gripper. It can be disassembled and replaced when needed. Therefore, different sizes of V-shaped grippers can be replaced as needed to adapt to graphite crucibles of different sizes, thereby improving the overall practicality of the device.

[0018] This invention features a positioning component in which a sliding rod automatically engages with the corresponding positioning hole in the sliding sleeve groove under the action of a top pressure spring. The tight engagement between the sliding rod and the positioning hole achieves mechanical locking, ensuring stable support of the graphite crucible during clamping and preventing the crucible from falling after the operator's hand leaves the second handle, thus improving the overall practicality of the device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0022] Figure 3 This utility model Figure 1 Enlarged structural diagram at point B;

[0023] Figure 4 This is a longitudinal sectional view of the corresponding positioning component of the sliding sleeve of this utility model.

[0024] The labels in the attached diagram are as follows: 1. Sliding sleeve; 2. Clamp; 3. First hinge block; 4. Gripper; 5. Second hinge block; 6. Support frame; 7. Clamping block; 71. Snap-fit ​​block; 8. Snap-fit ​​groove; 9. Sliding groove; 10. First handle; 11. Second handle; 12. Positioning assembly; 13. Sliding block; 14. Sliding rod; 141. Sleeve plate; 15. Top pressure spring; 16. Positioning hole. Detailed Implementation

[0025] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This specific embodiment is an adjustable graphite crucible positioning and clamping fixture, such as... Figure 1-3As shown, the adjustable graphite crucible positioning and clamping fixture includes a sliding sleeve 1, with a clamp 2 installed at one end of the sliding sleeve 1. The clamp 2 includes a first hinge block 3 and clamping claws 4 symmetrically hinged at both ends of the first hinge block 3. The clamping claws 4 are generally L-shaped. The sliding sleeve 1 is fixed on one side of the first hinge block 3. A snap-fit ​​groove 8 is installed on the sliding sleeve 1. One end of the snap-fit ​​groove 8 extends through the first hinge block 3. A second hinge block 5 is fixed at the end of the snap-fit ​​groove 8 extending out of the first hinge block 3. Support frames 6 are symmetrically hinged at both ends of the second hinge block 5. The clamping claws 4 and the support frames 6 are hollowed out as a whole. The support frames 6 are hinged at the middle section of the clamping claws 4. An auxiliary clamping block 7 is installed at the end of the clamping claws 4 away from the first hinge block 3.

[0027] The linear thrust is converted into the synchronous opening and closing motion of the gripper 4 by the four-bar linkage formed by the second hinge block 5 and the support frame 6, ensuring that the clamping force is evenly distributed and significantly improving the adaptability to irregular or thin-walled crucibles. The overall design effectively balances the ease of operation and adaptability to working conditions through the dual adjustment mechanism of mechanical locking and modular replacement.

[0028] The aforementioned clamping block 7 is V-shaped, and a snap-fit ​​block 71 is protruding from the outer side of the clamping block 7. A snap-fit ​​groove 8 is provided on the clamping claw 4. The snap-fit ​​block 71 is inserted and installed in the snap-fit ​​groove 8. A clamping tooth is protruding from the inner side of the snap-fit ​​block 71. The cross-section of the snap-fit ​​block 71 and the snap-fit ​​groove 8 is T-shaped.

[0029] The V-shaped clamping block 71 is inserted into the gripper 4 through the engagement of the clamping block 71 and the T-shaped clamping slot 8. It can be disassembled and replaced when needed. Therefore, different sizes of V-shaped clamping blocks 7 can be replaced as needed to adapt to graphite crucibles of different sizes, thereby improving the overall practicality of the device.

[0030] like Figure 1 and Figure 4 As shown, a first handle 10 is fixed to one end of the sliding sleeve 1. A sliding groove 9 is provided on the sliding sleeve 1. The other end of the snap-fit ​​groove 8, away from the second hinge block 5, extends into the sliding groove 9. A second handle 11 is fixed at the position of the snap-fit ​​groove 8 corresponding to the sliding groove 9. The first handle 10 and the second handle 11 cooperate to drive the snap-fit ​​groove 8 to slide. A positioning cavity is provided inside the second handle 11. A positioning component 12 is installed in the positioning cavity. Positioning holes 16 are provided at equal intervals on the inner side wall of the sliding groove 9. The positioning component 12 and the positioning holes 16 cooperate to position each other. The positioning component 12 includes a sliding rod 14 that is slidably disposed in the positioning cavity. A slider 13 is fixed to one end of the sliding rod 14. The end of the sliding rod 14 away from the slider 13 is inserted into the slider 13. A sleeve plate 141 is sleeved and fixed on the sliding rod 14. A top pressure spring 15 for pressing the auxiliary sleeve plate 141 is installed in the positioning cavity.

[0031] With the positioning component 12 in place, the slide rod 14 in the positioning component 12 will automatically embed into the corresponding positioning hole 16 in the slide groove 9 of the slide sleeve 1 under the action of the top pressure spring 15. The mechanical locking is achieved by the tight engagement between the slide rod 14 and the positioning hole 16, which can ensure that the graphite crucible can be stably supported during the clamping process and avoid the graphite crucible from falling after the operator's hand is removed from the second handle 11, thereby improving the overall practicality of the device.

[0032] Working principle:

[0033] The operator first holds the first handle 10 to fix the sliding sleeve 1, and then pushes the locking groove 8 to slide in the sliding groove 9 of the sliding sleeve 1 through the second handle 11. The movement of the locking groove 8 will drive the second hinge block 5 to move synchronously, and then push or pull the gripper 4 through the support frame 6 to make it rotate around the first hinge block 3. Since the support frame 6 is hinged to the middle of the gripper 4, this transmission structure effectively converts the linear motion of the locking groove 8 into the opening and closing motion of the gripper 4. When the gripper 4 opens or closes to the required angle, the V-shaped clamping block 7 installed at the end of the gripper 4 provides auxiliary clamping treatment for the graphite crucible. The hollow structure of the L-shaped gripper 4 reduces weight while ensuring strength, and the hollow design of the support frame 6 effectively avoids motion interference.

[0034] After being clamped to the designated position, the slide rod 14 in the positioning assembly 12 will automatically embed into the corresponding positioning hole 16 in the slide groove 9 of the slide sleeve 1 under the action of the top pressure spring 15. The mechanical locking is achieved by the tight engagement between the slide rod 14 and the positioning hole 16, thereby ensuring the stability of the clamping state and minimizing the risk of the graphite crucible coming loose when clamped.

[0035] Since the V-shaped clamping block 7 is inserted into the clamping jaw 4 through the engagement of the clamping block 71 and the T-shaped clamping groove 8, it can be disassembled and replaced when needed. Therefore, different sizes of V-shaped clamping blocks 7 can be replaced as needed to adapt to graphite crucibles of different sizes.

[0036] All technical features in this embodiment can be freely combined according to actual needs.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable graphite crucible positioning and clamping fixture, comprising a sliding sleeve (1), characterized in that, A clamp (2) is installed at one end of the sliding sleeve (1); The clamp (2) includes a first hinge block (3) and grippers (4) symmetrically hinged at both ends of the first hinge block (3). The sliding sleeve (1) is fixed on one side of the first hinge block (3). A snap-fit ​​groove (8) is installed on the sliding sleeve (1). One end of the snap-fit ​​groove (8) extends through the first hinge block (3). A second hinge block (5) is fixed at one end of the snap-fit ​​groove (8) extending out of the first hinge block (3). Support frames (6) are symmetrically hinged at both ends of the second hinge block (5). The support frames (6) are hinged at the middle section of the grippers (4). An auxiliary clamping block (7) is installed at one end of the grippers (4) away from the first hinge block (3).

2. The adjustable graphite crucible positioning and clamping fixture according to claim 1, characterized in that, The clamping block (7) is V-shaped, and a snap-fit ​​block (71) is provided on the outer side of the clamping block (7). A snap-fit ​​groove (8) is provided on the jaw (4), and the snap-fit ​​block (71) is inserted into the snap-fit ​​groove (8).

3. The adjustable graphite crucible positioning and clamping fixture according to claim 2, characterized in that, The inner side of the snap-fit ​​block (71) is provided with clamping teeth, and the cross-section of the snap-fit ​​block (71) and the snap-fit ​​groove (8) is T-shaped.

4. The adjustable graphite crucible positioning and clamping fixture according to claim 1, characterized in that, The gripper (4) is L-shaped, and the gripper (4) and the support frame (6) are hollowed out.

5. The adjustable graphite crucible positioning and clamping fixture according to claim 1, characterized in that, One end of the sliding sleeve (1) is fixed with a first handle (10), and a sliding groove (9) is provided on the sliding sleeve (1). The other end of the snap-fit ​​groove (8) away from the second hinge block (5) extends into the sliding groove (9). A second handle (11) is fixed at the position of the snap-fit ​​groove (8) corresponding to the sliding groove (9). The first handle (10) and the second handle (11) cooperate to drive the snap-fit ​​groove (8) to slide.

6. The adjustable graphite crucible positioning and clamping fixture according to claim 5, characterized in that, The second handle (11) has a positioning cavity inside, and a positioning component (12) is installed in the positioning cavity. Positioning holes (16) are equally spaced on the inner sidewall of the slide groove (9). The positioning component (12) and the positioning holes (16) are positioned together.

7. The adjustable graphite crucible positioning and clamping fixture according to claim 6, characterized in that, The positioning assembly (12) includes a slide rod (14) slidably disposed in the positioning cavity. One end of the slide rod (14) is fixed with a slider (13). The end of the slide rod (14) away from the slider (13) is inserted into the slider (13). A sleeve plate (141) is sleeved and fixed on the slide rod (14). A top pressure spring (15) for pressing the auxiliary sleeve plate (141) is installed in the positioning cavity.

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