A wire winding type six-sided top press
By designing multiple sets of steel wire winding mechanisms to wrap around the arc groove of the six-sided top press, and using locking units and compacting units to ensure stability, the problem of easy deformation of steel wire winding in the prior art is solved, and better results are achieved pressure bearing capacity and machine optimization.
Patent Information
- Application Number
- CN202410001978.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-02
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2044-01-02
AI Technical Summary
The existing wire-winding six-sided top press is easily deformed by pulling after being wound, resulting in a reduced binding effect and unable to effectively enhance the pressure bearing capacity of the main machine's working direction.
Multiple groups of steel wire winding mechanisms are designed to be wound on the arc grooves outside the end seats. The bending angle is increased by the design of the arc grooves, reducing tension, and ensuring the stability of the steel wire winding mechanism through the locking unit and compacting unit. Tightness.
It effectively enhances the pressure bearing capacity in the working direction of the main machine, reduces the weight and manufacturing cost of the whole machine, and avoids the looseness of the wire winding mechanism.
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Figure CN117563506B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of six-sided top presses, in particular to a wire-wound six-sided top press. Background Art
[0002] The hinged six-sided top press is composed of main parts such as main machine, supercharger, hydraulic system, control console, electrical control system and heating system. Its working principle is to use the hydraulic system to push the piston top hammer in the main machine out and offset it with the synthetic block of diamond to make it grow synthetically. The main machine of the traditional hinged six-sided top press adopts a hinged structure. The six hinge beams are connected to form a hexahedral rigid frame through 12 pins. The six working cylinders (including pistons) are respectively installed in the six hinge beams. The hinged structure is simple, practical and easy to manufacture. It has been used in the manufacture of six-sided top press equipment for many years. However, due to the long growth time of diamond, ordinary hinge beams are made by casting, and castings are prone to defects, which affect the working condition and life of the six-sided top press equipment. The commonly used solution now is to add working cylinders or forge hinge beams, which will increase the manufacturing cost and resource usage of the six-sided top press and is not conducive to the optimization of the weight of the whole equipment.
[0003] The existing Chinese patent document CN210699994U discloses a wire-wound six-sided top press. According to the drawings and records in its specification, it can be known that it enhances the pressure-bearing capacity of the main machine in the working direction by winding steel wire windings on the outside of the six main machines. However, in this scheme, the outer side of the base is a plane. According to the drawings, it can be seen that the shape of the steel wire winding after being put on is a regular octagon. This will result in a small angle of the bending point of the steel wire winding at the end of the base. The small bending angle will increase the tension at this point, and it will easily cause pulling deformation due to the increase in tension. The steel wire winding is in a ring shape as a whole. Once deformation occurs, its restraint effect is reduced, and it cannot effectively enhance the pressure-bearing capacity of the main machine in the working direction. For this reason, the present invention proposes a wire-wound six-sided top press. Summary of the Invention
[0004] The object of the present invention is to provide a wire-wound six-sided top press to solve the problem in the above-mentioned background technology that the wire is easily deformed by being pulled after being wound.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wire-wound six-sided top press, comprising six mainframes distributed in the upper, lower, left, right, front and rear directions, wherein two mainframes on the same axis are symmetrically distributed, further comprising docking seats fixed on the outer sides of the mainframes, and connecting plates are provided between adjacent docking seats, and both ends of the connecting plates are fixed to the docking seats by latches, and the outer ends of the two mainframes distributed in the upper and lower directions are fixed with end seat one, the outer ends of the two mainframes distributed in the left and right directions are fixed with end seat two, and the outer ends of the two mainframes distributed in the front and back directions are fixed with end seat three. A base for supporting a six-sided constant pressure machine is fixed to the outer side of the lower end seat 1; three groups of steel wire winding mechanisms, with arc groove 1 opened on the outer side of the two end seats 1 and the two end seats 2 distributed up and down and left and right, arc groove 2 opened on the two end seats 1 and the two end seats 3 distributed up and down and front and back, and arc groove 3 opened on the two end seats 3 and the two end seats 2 distributed front and back and left and right. The three groups of steel wire winding mechanisms are respectively fitted with the outer sides of the four arc grooves 1, the four arc grooves 2 and the four arc grooves 3, and the steel wire winding mechanisms enhance the pressure-bearing capacity of the main base in the working direction.
[0006] Preferably, the steel wire winding mechanism includes a steel belt, a steel wire fixed on the outside of the steel belt, and a locking unit for locking the steel belt after it is fitted. Two turning rods are fixed in the arc groove one, the arc groove three located on the end seat three, and the arc groove two located on the end seat one. The steel belt fits the arc groove one, the arc groove two, and the arc groove three, and the two ends of the steel belt are respectively passed around the two turning rods and locked by the locking unit. The steel belt is composed of the steel wire, so that the overall strength is high and the tensile effect is good.
[0007] Preferably, the locking unit includes a clamping plate 1 and a clamping plate 2, one end of the clamping plate 1 and the clamping plate 2 are connected to each other through a rotating shaft, and a locking rod is fixed to the other end of the clamping plate 1, and an opening is provided at the other end of the clamping plate 2 to be plugged into the locking rod. The outer end of the locking rod is threadedly sleeved with a tightening cap, and is rotated by the tightening cap so that the clamping plate 1 and the clamping plate 2 clamp the folded steel belt. The designed locking unit is simple to install and disassemble, and multiple locking units can be installed according to the fitting length.
[0008] Preferably, a bonding layer is fixed on the outer side of the steel belt, and the outer side of the bonding layer is a rough plane structure. After the steel belt is folded around the steering rod, the two bonding layers are bonded to each other, and the bonding layer improves friction.
[0009] Preferably, an anti-skid layer is fixed on the outer side of the steel belt, and the outer side of the anti-skid layer is a tooth row structure. The tooth row structure can better play a locking effect and facilitate subsequent removal.
[0010] Preferably, a baffle is provided in one of the arc-shaped grooves 2, and the baffle is provided in one of the arc-shaped grooves 2 located in the upper and lower end seats 1, and is located between the two turning rods. The two ends of the baffle are spherical concave structures, which facilitates the steel belt to bypass the turning rod inside the arc-shaped groove 2.
[0011] Preferably, the arc groove one, the arc groove two and the arc groove three are each set to three, and each group of the steel wire winding mechanisms is composed of three steel wire winding mechanisms, and adjacent steel wire winding mechanisms face opposite directions to facilitate the installation of the locking unit.
[0012] Preferably, the steering rod is installed in the end seat 1, the end seat 2 and the end seat 3 by plugging, which facilitates the replacement of the steering rod.
[0013] Preferably, compaction units are provided in the end seat two and the end seat three distributed front, back, left and right, and the steel belt is compacted by the compaction units. The compaction units are respectively plugged into the arc groove three in the end seat two and the arc groove two in the end seat three, thereby compacting the steel belt and improving the locking effect.
[0014] Preferably, the compacting unit includes three arc-shaped plates, the outer ends of the three arc-shaped plates are fixed with end plates, and both ends of the end plates are fixed with docking plates, the outer sides of the end seat two and the end seat three are provided with docking holes, and the docking plates are fixed to the docking holes through plug-in columns, and the arc-shaped plates that are compatible with the arc-shaped groove can be inserted more conveniently.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] 1. The multiple sets of steel wire winding mechanisms designed in the present invention can be wound on the arc grooves on the outside of end seat 1, end seat 2 and end seat 3. The design of the arc grooves can, on the one hand, increase the bending angle of the steel belt and the steel wire in the bending area at the end of the arc groove, thereby reducing the tension on the steel belt and the steel wire in the groove. On the other hand, the arc structure can also have a larger area than the plane structure, so that the contact area with the steel belt and the steel wire is larger, so that it can better enhance the pressure-bearing capacity of the main seat in the working direction.
[0017] 2. The locking unit designed in the present invention can facilitate the winding and disassembly of the wire winding mechanism, and the compacting unit designed makes the wire winding mechanism fit more closely with part of the arc groove, and cooperates with the locking unit to better prevent the wire winding mechanism from becoming loose. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0019] Figure 2 This is a schematic diagram of the positions of end seat 1, end seat 2 and end seat 3 of the present invention;
[0020] Figure 3 It is a partial cross-sectional rear side view of two end seats of the present invention;
[0021] Figure 4 This is a schematic diagram of the compacting unit and the arc-shaped groove after three-way docking of the present invention;
[0022] Figure 5 This is a schematic diagram of the present invention after the compacting unit and the arc groove are separated;
[0023] Figure 6 This is a schematic diagram of the connection between the locking unit and the steel belt of the present invention;
[0024] Figure 7 This is a side view of the locking unit of the present invention after docking with the steel belt;
[0025] Figure 8 This is a schematic diagram of the anti-skid layer structure in the steel belt of the present invention;
[0026] Figure 9 This is a schematic top view of the anti-skid layer inside the steel strip of the present invention.
[0027] In the figure: 1. Main base; 2. Docking base; 3. Connecting plate; 4. End base 1; 5. End base 2; 6. End base 3; 7. Base; 8. Wire winding mechanism; 9. Arc groove 1; 10. Arc groove 2; 11. Arc groove 3; 12. Steel belt; 13. Steel wire; 14. Locking unit; 15. Steering rod; 16. Clamp 1; 17. Clamp 2; 18. Locking rod; 19. Opening; 20. Tightening cap; 21. Laminating layer; 22. Anti-slip layer; 23. Compacting unit; 24. Arc plate; 25. End plate; 26. Docking plate; 27. Docking hole; 28. Baffle. DETAILED DESCRIPTION
[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0029] Example 1
[0030] See also Figure 1-Figure 5The wire-wound six-sided top press shown in the figure includes six mainframes 1 distributed in the upper, lower, left, right, front and rear directions. Two mainframes 1 on the same axis are symmetrically distributed. The mainframes 1 also include docking bases 2 fixed on the outside of the mainframes 1. Connecting plates 3 are provided between adjacent docking bases 2. Both ends of the connecting plates 3 are fixed to the docking bases 2 by latches. The outer ends of the two mainframes 1 distributed in the upper and lower directions are fixed with end bases 1 4, the outer ends of the two mainframes 1 distributed in the left and right directions are fixed with end bases 2 5, the outer ends of the two mainframes 1 distributed in the front and back directions are fixed with end bases 3 6, and the outer ends of the end base 1 4 located below are fixed. There is a base 7 for supporting a six-sided constant pressure machine; three groups of steel wire winding mechanisms 8, two end seats 1 4 and two end seats 2 5 distributed up and down and left and right are provided with an arc groove 1 9 on the outer side, two end seats 1 4 and two end seats 3 6 distributed up and down and front and back are provided with an arc groove 2 10, two end seats 3 6 and two end seats 2 5 distributed front and back and left and right are provided with an arc groove 3 11, the three groups of steel wire winding mechanisms 8 are respectively fitted with the outer sides of the four arc grooves 1 9, the four arc grooves 2 10 and the four arc grooves 3 11, and the steel wire winding mechanism 8 is used to enhance the pressure-bearing capacity of the main base 1 in the working direction.
[0031] In this solution, end base 1 4, end base 2 5, and end base 3 6 are added to the six main bases 1, and arc groove 1 9, arc groove 2 10, and arc groove 3 11 are opened. Three sets of steel wire winding mechanisms 8 are respectively wrapped around the outside of arc groove 1 9, arc groove 2 10, and arc groove 3 11, thereby enhancing the pressure bearing capacity of the main base 1 in the working direction, reducing the overall weight of the existing six-sided top press, and also reducing the manufacturing cost.
[0032] For details, see Figure 4 、 Figure 6 and Figure 7 The wire winding mechanism 8 shown in the figure includes a steel belt 12, a steel wire 13 fixed to the outside of the steel belt 12, and a locking unit 14 for locking the steel belt 12 after it is fitted. Two turning rods 15 are fixed in the arc groove 19, the arc groove 3 11 located on the end seat 3 6, and the arc groove 2 10 located on the end seat 1 4. The steel belt 12 fits in the arc groove 19, the arc groove 2 10, and the arc groove 3 11. The two ends of the steel belt 12 are respectively passed around the two turning rods 15 and locked by the locking unit 14.
[0033] Among them, the locking unit 14 includes a clamp 16 and a clamp 17, one end of the clamp 16 and the clamp 17 are connected to each other through a rotating shaft, the other end of the clamp 16 is fixed with a locking rod 18, and the other end of the clamp 17 is provided with an opening 19 that is plugged into the locking rod 18. The outer end of the locking rod 18 is threadedly sleeved with a tightening cap 20, and is rotated by the tightening cap 20, so that the clamp 16 and the clamp 17 clamp the folded steel strip 12.
[0034] The principle of the wire winding mechanism 8 for winding and locking is as follows: First, the personnel insert one end of the steel belt 12 into the arc groove 9, and then put it on the outside of the two end seats 14 and the two end seats 25 in sequence, and then make the two ends of the steel belt 12 respectively at the two steering rods 15, and Figure 6 、 Figure 8 and Figure 9 As shown, after passing through the steering rod 15 and tightening, the tensioned state is maintained and the steel belt 12 is fitted to the outside. Finally, the personnel fit the splint 16 to the steel belt 12 on one side, and fit the splint 2 17 to the steel belt 12 on the other side first, connect them with the locking rod 18 through the opening 19, and then screw in the tightening cap 20, so that the splint 16 and the splint 2 17 lock the steel belt 12 that passes through the steering rod 15 and fits, so that the fitting state is maintained and not loose.
[0035] It should be noted that if the steel belt 12 at the contact portion is longer after passing the steering rod 15 , personnel can use multiple locking units 14 to lock the steel belt 12 to prevent the steel belt 12 from loosening.
[0036] For further information, see Figure 6 A bonding layer 21 is fixed to the outside of the steel belt 12. The outside of the bonding layer 21 is a rough plane structure. After the steel belt 12 is folded around the turning rod 15, the two bonding layers 21 are bonded to each other.
[0037] It should be noted that when the steel strip 12 passes around the turning rod 15 and is folded together, in order to increase the friction between the steel strips 12 at the joint, a bonding layer 21 is added to the outer side of the steel strip 12 so that the rough surface after bonding can increase the friction and prevent the steel strip 12 from being easily pulled loose.
[0038] It should also be noted that, in this solution, more steel strips 12 can be wound to improve the pressure bearing capacity. The arc groove 1 9, the arc groove 2 10 and the arc groove 3 11 are each set to three. At the same time, each set of steel wire winding mechanisms 8 is composed of three steel wire winding mechanisms 8, and adjacent steel wire winding mechanisms 8 face opposite directions. The opposite design can make it easier to install the locking unit 14, so that adjacent locking units 14 do not come into contact with each other and affect the installation.
[0039] Secondly, considering that the steering rod 15 will be pulled by the steel belt 12 and easily damaged, the steering rod 15 is installed in the end seat 1 4, the end seat 2 5 and the end seat 3 6 by plugging, making replacement more convenient;
[0040] For details, please refer to Figure 3 In the figure, a baffle 28 is provided in one of the arc-shaped grooves 10. The baffle 28 is provided in an arc-shaped groove 10 in the two upper and lower end seats 4 and is located between the two steering rods 15. Both ends of the baffle 28 are spherical concave structures.
[0041] It should be further explained that since the arc groove 2 10 on the end seat 1 4 and the end seat 3 6 are both opened inside, it is difficult for personnel to bypass the turning rod 15 after inserting the steel belt 12. This solution uses a fixed baffle 28, which cooperates with the spherical concave at both ends, so that after the steel belt 12 passes through, it will counteract the spherical concave and rotate accordingly, and wrap around the outside of the turning rod 15, making it convenient for personnel to install the steel belt 12.
[0042] In this solution, the designed arc groove 1 9, arc groove 2 10 and arc groove 3 11 are all arc surface structures, so that when the steel belt 12 is wrapped around its outside, the bending angle at the two ends of the end seat 1 4, end seat 2 5 and end seat 3 6 increases, so that the tension on the steel belt 12 and the steel wire 13 in the groove is reduced. On the other hand, the arc structure can also have a larger area than the plane structure, so that the contact area with the steel belt 12 and the steel wire 13 is larger, so that it can better enhance the pressure-bearing capacity of the main base 1 in the working direction.
[0043] The process steps of the steel wire winding mechanism 8 winding the steel wire around the outside of the six-sided top press;
[0044] In the first step, personnel wrap the steel belt 12 along the arc groove 10;
[0045] In the second step, after winding, the steel belt 12 is passed around the steering rod 15 and locked by the locking unit 14;
[0046] The third step is to wind all three arc grooves 9 according to the first and second steps;
[0047] The fourth step is to follow the method of the first to third steps, and then wind along the arc groove three 11, and finally wind along the arc groove one 9, winding from small to large on the outside of the six-sided top press.
[0048] Example 2
[0049] See also Figure 4 and Figure 5 This embodiment further explains Example 1, and the difference lies in that the steel strip 12 is compacted.
[0050] Specifically, the end seat 2 5 and the end seat 3 6 are provided with compacting units 23, and the steel strip 12 is compacted by the compacting units 23. The compacting units 23 are respectively plugged into the arc groove 3 11 in the end seat 2 5 and the arc groove 2 10 in the end seat 3 6.
[0051] Among them, the compaction unit 23 includes three arc-shaped plates 24, the outer ends of the three arc-shaped plates 24 are fixed with end plates 25, both ends of the end plates 25 are fixed with docking plates 26, and the outer sides of the end seats 25 and 3 are provided with docking holes 27, and the docking plates 26 and the docking holes 27 are fixed by inserting columns.
[0052] In this solution, considering that the arc groove three 11 in the end seat two 5 and the arc groove two 10 in the end seat three 6 are located inside the end seat two 5 and the end seat three 6, there is more space left in the groove after the steel belt 12 passes through. In order to avoid the steel belt 12 from being offset and loose, the three arc plates 24 are inserted along the arc groove by holding the end plate 25, and fit with the steel belt 12, so that the steel belt 12 is pressed tightly to avoid looseness.
[0053] Example 3
[0054] See also Figure 8 and Figure 9 This embodiment further explains other embodiments, and the difference lies in the optimization of the steel belt 12 structure.
[0055] Specifically, an anti-slip layer 22 is fixed to the outer side of the steel belt 12 , and the outer side of the anti-slip layer 22 is a tooth row structure.
[0056] It should be noted that the design of the tooth row structure enables the steel belt 12 to make the anti-slip layers 22 of the two tooth row structures fit together after passing around the turning rod 15, thereby further increasing the anti-slip effect. Combined with the locking of the locking unit 14, the steel belt 12 can be better wrapped around the outside of the six-sided top press.
[0057] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0058] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A wire winding six-sided top press, comprising: Six main engine seats (1) are arranged in the upper, lower, left, right, front and rear directions, and two main engine seats (1) on the same axis are symmetrically arranged; It is characterized by further comprising: A docking seat (2) is fixed on the outside of the main engine seat (1), and a connecting plate (3) is provided between adjacent docking seats (2), and both ends of the connecting plate (3) are fixed to the docking seat (2) by means of latches. An end seat 1 (4) is fixed to the outer ends of the two main engine seats (1) arranged vertically, an end seat 2 (5) is fixed to the outer ends of the two main engine seats (1) arranged horizontally, and an end seat 3 (6) is fixed to the outer ends of the two main engine seats (1) arranged front and back, and a base (7) for supporting a six-sided fixed press is fixed to the outer side of the end seat 1 (4) located at the bottom; The three sets of steel wire winding mechanisms (8) are provided with arc grooves 1 (9) on the outer sides of two end seats 1 (4) and two end seats 2 (5) distributed vertically and horizontally, arc grooves 2 (10) are provided on two end seats 1 (4) and two end seats 3 (6) distributed vertically and frontally, and arc grooves 3 (11) are provided on two end seats 3 (6) and two end seats 2 (5) distributed frontally and rearly. The three sets of steel wire winding mechanisms (8) are respectively connected to the four arc grooves 1 (9), the four arc grooves 2 (10) and The four arc-shaped grooves (11) are fitted on the outside, and the pressure bearing capacity of the main base (1) in the working direction is enhanced by the steel wire winding mechanism (8); the steel wire winding mechanism (8) includes a steel belt (12), a steel wire (13) fixed on the outside of the steel belt (12), and a locking unit (14) used to lock the steel belt (12) after fitting together, and the arc-shaped groove (9) and the arc-shaped groove (11) located on the end seat (6) and the arc-shaped groove (10) located on the end seat (4) are all fixed with two The steel belt (12) is fitted with the arc groove 1 (9), the arc groove 2 (10) and the arc groove 3 (11), and the two ends of the steel belt (12) are respectively passed around the two turning rods (15) and locked by the locking unit (14), and the end seat 2 (5) and the end seat 3 (6) distributed in the front, back, left and right directions are provided with a compacting unit (23), and the steel belt (12) is compacted by the compacting unit (23), and the compacting unit (23) is respectively connected to the The arc groove three (11) in the end seat two (5) and the arc groove two (10) in the end seat three (6) are plugged into each other. The compacting unit (23) comprises three arc plates (24). The outer ends of the three arc plates (24) are fixed with end plates (25), and both ends of the end plates (25) are fixed with docking plates (26). The outer sides of the end seat two (5) and the end seat three (6) are provided with docking holes (27), and the docking plates (26) are fixed to the docking holes (27) by means of plugging columns.
2. A wire-wound six-sided top press according to claim 1, characterized in that: The locking unit (14) comprises a clamping plate 1 (16) and a clamping plate 2 (17), one end of the clamping plate 1 (16) and the clamping plate 2 (17) are connected to each other by rotating through a rotating shaft, and a locking rod (18) is fixed to the other end of the clamping plate 1 (16), and an opening (19) is provided at the other end of the clamping plate 2 (17) for plugging into the locking rod (18), and a tightening cap (20) is threadedly sleeved on the outer end of the locking rod (18), and the tightening cap (20) is rotated to allow the clamping plate 1 (16) and the clamping plate 2 (17) to clamp the folded steel belt (12).
3. A wire-wound six-sided top press according to claim 2, characterized in that: A bonding layer (21) is fixed on the outer side of the steel belt (12), the outer side of the bonding layer (21) is a rough plane structure, and after the steel belt (12) is folded around the steering rod (15), the two bonding layers (21) are bonded to each other.
4. A wire-wound six-sided top press according to claim 3, characterized in that: An anti-skid layer (22) is fixed on the outer side of the steel belt (12), and the outer side of the anti-skid layer (22) is a tooth row structure.
5. A wire-wound six-sided top press according to claim 1, characterized in that: A baffle (28) is provided in one of the arc-shaped grooves (10), and the baffle (28) is provided in one of the arc-shaped grooves (10) in the two upper and lower end seats (4) and is located between the two steering rods (15), and both ends of the baffle (28) are spherical concave structures.
6. A wire-wound six-sided top press according to claim 1, characterized in that: The arc-shaped groove one (9), the arc-shaped groove two (10) and the arc-shaped groove three (11) are each provided in three numbers, and each group of the steel wire winding mechanisms (8) is composed of three steel wire winding mechanisms (8), and adjacent steel wire winding mechanisms (8) face in opposite directions.
7. A wire-wound six-sided top press according to claim 1, characterized in that: The steering rod (15) is installed in the end seat 1 (4), the end seat 2 (5) and the end seat 3 (6) by plugging.
Citation Information
Patent Citations
Adjusting structure for diamond crystal growth equipment
CN210699994U
Steel wire winding type cubic press
CN116832703A