Auxiliary carrying tool for large-size quartz crucible demolding

Abstract

The application provides a large-size quartz crucible demoulding auxiliary carrying tool, which comprises two clamping members arranged oppositely and a flexible band connected between the two clamping members, the two clamping members respectively comprise a movable clamping plate and a force applying arm, the movable clamping plates of the two clamping members are arranged oppositely, the force applying arms of the two clamping members are arranged oppositely on the back of the two movable clamping plates, the two ends of the flexible band are connected with the back of the two movable clamping plates arranged oppositely, the two movable clamping plates arranged oppositely can be respectively arranged on the two sides of the outer side wall of the quartz crucible to be demoulded, and the flexible band connected with the two movable clamping plates can be wrapped around the quartz crucible along the lower side of the outer side wall of the quartz crucible, the force applying arms on the two movable clamping plates are simultaneously lifted upward, so that the two movable clamping plates form a clamping force to the upper side of the quartz crucible, and the flexible band forms a clamping to the quartz crucible, so that the quartz crucible can be demoulded and carried.

Description

Technical Field

[0001] This invention relates to the field of quartz crucible demolding and handling technology, and specifically to an auxiliary handling fixture for demolding large-size quartz crucibles. Background Technology

[0002] Quartz crucibles are important auxiliary components in the production of single-crystal silicon rods for solar energy and semiconductors. Currently, quartz crucibles are mainly manufactured using an electric arc melting method combined with a rotary molding method. During the melting process, the centrifugal force of the rotating mold causes quartz sand to accumulate on the inner surface of the mold. Then, a high-temperature electric arc is generated by electrode discharge to melt the quartz sand accumulated on the inner surface of the mold. The crucible is then formed by the combination of the mold and centrifugal force.

[0003] After the quartz crucible is melted, it needs to be demolded. In the existing technology, scissor-type crucible removal tongs are commonly used to clamp and remove the quartz crucible and then transport it to a receiving trolley. This type of scissor-type crucible removal tongs is operated by a single person and is suitable for demolding small-diameter, lightweight quartz crucibles. However, when demolding large-sized quartz crucibles with a diameter of 30 inches or more, the contact area between the jaws of the single-person operated scissor-type crucible removal tongs and the quartz crucible is small due to the weight of the large-sized quartz crucible itself. This results in greater stress on the clamped part of the quartz crucible, which can easily cause the crucible to break and be scrapped. Moreover, single-person operated scissor-type crucible removal tongs are relatively laborious and have poor stability when clamping and transporting large-sized quartz crucibles. Therefore, they are not suitable. Summary of the Invention

[0004] In view of this, it is necessary to provide an auxiliary handling fixture for demolding large-size quartz crucibles to solve the technical problems of laborious handling and poor stability when demolding large-size quartz crucibles in the prior art.

[0005] The technical solution adopted by this invention to solve its technical problem is: An auxiliary handling fixture for demolding large-size quartz crucibles includes two opposing clamping members and a flexible band connecting the two clamping members. Each clamping member includes a movable clamping plate and a lever arm. The movable clamping plates of the two clamping members are positioned opposite each other, and the lever arms of the two clamping members are positioned opposite each other on the back of the opposing movable clamping plates. The two ends of the flexible band are respectively connected to the back of the opposing movable clamping plates. The opposing movable clamping plates can be placed on both sides of the outer wall of the quartz crucible to be demolded, and the flexible band connected to the two movable clamping plates forms a ring around the quartz crucible along the lower side of the outer wall of the quartz crucible. By simultaneously lifting the lever arms on the two movable clamping plates upward, the two movable clamping plates form a counter-clamping force on the upper side of the quartz crucible, and together with the flexible band, clamp the quartz crucible for handling.

[0006] Preferably, there are at least two flexible bands arranged side by side between the two movable clamps. The two ends of the flexible bands arranged side by side are close to the back sides of the two movable clamps, and the lengths of the flexible bands arranged side by side are equal.

[0007] Preferably, a parallel retainer is provided between two adjacent flexible bands. The parallel retainer is fixed on the two adjacent flexible bands and is close to the middle of the flexible bands, so that the two adjacent flexible bands remain parallel.

[0008] Preferably, the movable clamp is a resilient arc-shaped steel plate, and the arc surface of the movable clamp matches the arc surface of the outer wall of the quartz crucible.

[0009] Preferably, the movable clamp is provided with symmetrical adjustment fasteners on both sides of its back. Each adjustment fastener has a through hole for the end of the flexible band to pass through. The flexible band can be freely pulled along the through hole to adjust the length of the flexible band holding the quartz crucible. An adjustment bolt corresponding to the through hole is provided on the outer wall of each adjustment fastener. The adjustment bolt is threadedly connected to the adjustment fastener and can be inserted laterally into the corresponding through hole along the outer wall of the adjustment fastener and abut against the flexible band to fix the flexible band.

[0010] Preferably, a fixing plate is provided at the end of the flexible band passing through the through hole of the adjusting fastener. The fixing plate connects the ends of the parallel flexible bands in the same direction so that the length of the parallel flexible bands can be adjusted synchronously along the through hole.

[0011] Preferably, the adjusting fastener is located at the upper end of the back of the movable clamping plate, and a positioning plate is provided at the lower end of the back of the movable clamping plate. A positioning hole corresponding to the through hole is provided on the positioning plate. The end of the flexible band passes through the positioning hole and then through the through hole corresponding to the positioning hole. The flexible band can be freely pulled along the through hole and the positioning hole. The positioning plate provides auxiliary positioning for the flexible band, so that the movable clamping plate and the flexible band remain upright when subjected to force.

[0012] Preferably, the surface of the movable clamp that contacts the quartz crucible is provided with anti-slip ridges.

[0013] Preferably, the flexible band is a steel wire rope or a chain.

[0014] Preferably, the lever arm is fitted with an anti-slip sleeve.

[0015] As can be seen from the above technical solution, the auxiliary handling fixture for demolding large-size quartz crucibles provided in this application includes two clamping members arranged opposite each other and a flexible hoop connected between the two clamping members. Each clamping member includes a movable clamping plate and a lever arm. The movable clamping plates of the two clamping members are arranged opposite each other, and the lever arms of the two clamping members are arranged opposite each other on the back of the two opposite movable clamping plates. Both ends of the flexible hoop are connected to the back of the two opposite movable clamping plates. During demolding, two people can place the two opposite movable clamping plates on the back of the crucible to be demolded. The outer sides of the demolded quartz crucible are clamped together, and flexible straps connected to two movable clamping plates encircle the crucible from the bottom side of the outer side. Simultaneously, the lever arms on the two movable clamping plates are raised, creating opposing clamping forces on the upper side of the crucible. These forces interact with the flexible straps, and the deformable nature of the flexible straps encases the crucible. Under the weight of the crucible itself, it is tightly clamped, facilitating demolding and handling. This auxiliary handling fixture for demolding large quartz crucibles has a large contact area with the crucible, resulting in even force distribution and preventing damage. Furthermore, it allows for handling by two people, saving time and effort, and offering high stability, further ensuring the safety of the crucible and preventing breakage. Attached Figure Description

[0016] Figure 1 This is a side view of the invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the invention.

[0018] Figure 3 This is a schematic diagram of the clamping component structure of the invention.

[0019] Figure 4 This is a schematic diagram showing the state of the invention clamping the quartz crucible.

[0020] In the figure: clamping component 10, flexible band 20, movable clamping plate 101, force arm 102, parallel retainer 201, adjusting fastener 103, through hole 104, adjusting bolt 105, positioning plate 106, positioning hole 107, anti-slip sleeve 108, anti-slip texture 109, fixing plate 202. Detailed Implementation

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Please refer to Figure 1 , Figure 2 and Figure 4 This invention provides an auxiliary handling fixture for demolding large-size quartz crucibles, comprising two opposing clamping members 10 and a flexible hoop 20 connecting the two clamping members 10. Each clamping member 10 includes a movable clamping plate 101 and a force-applying arm 102. The movable clamping plates 101 of the two clamping members 10 are oppositely arranged, and the force-applying arms 102 of the two clamping members 10 are oppositely arranged on the back of the opposing movable clamping plates 101. Both ends of the flexible hoop 20 are connected to the back of the opposing movable clamping plates 101. This auxiliary handling fixture is used for demolding large-size quartz crucibles. The auxiliary handling fixture requires two people to operate simultaneously. Before demolding, first, operate the crucible mold of the crucible melting furnace to the designated position, and adjust the crucible mold so that its opening is horizontal, then rotate it downwards by 5-10° to tilt the crucible mold downwards. Slightly adjust the rotation of the crucible mold to allow the melted quartz crucible to slide to the outlet of the crucible mold, exposing the outer wall of the quartz crucible. The two people stand on either side of the quartz crucible to be demolded, each holding the lever arm 102 on the two clamping parts 10 of the auxiliary handling fixture for demolding the large-sized quartz crucible, and place the two opposing movable clamps 101 on the quartz crucible to be demolded. On both sides of the outer wall of the crucible, directly opposite the outer walls of the quartz crucible, with the flexible straps 20 connected to the two movable clamps 101 wrapped around the lower side of the outer wall of the quartz crucible, two people simultaneously press the two movable clamps 101 against the outer surface of the quartz crucible and move the two movable clamps 101 upwards along the outer surface of the quartz crucible, so that the flexible straps 20 form a loop around it upwards along the outer wall of the quartz crucible, and the height of the two movable clamps 101 should be consistent. At this time, the two people simultaneously lift the force arm 102 upwards, and under the action of the two force arms 102, the upper ends of the two movable clamps 101 are respectively tightly pressed against the quartz crucible. The upper surface of the crucible is subjected to opposing clamping forces, while the flexible band 20, under the traction of the two movable clamps 101, is tightly attached to the lower surface of the quartz crucible. Under the upward lifting force of the two force-applying arms 102, the two movable clamps 101 and the flexible band 20 are simultaneously subjected to forces, forming mutual forces. Under the force of the quartz crucible's own weight, they are tightly clamped onto the quartz crucible. At this time, if the two people continue to lift the force-applying arms 102 simultaneously, the quartz crucible can be completely lifted and pulled outward, so that the quartz crucible is removed from the crucible mold and transported to the crucible receiving trolley to complete the demolding operation.

[0023] Please refer to Figure 2Furthermore, the flexible band 20 is made of steel wire rope or chain. To ensure stability when clamping the quartz crucible, at least two flexible bands 20 are provided. The two flexible bands 20 are arranged side by side between the two movable clamps 101. The two ends of the parallel flexible bands 20 are close to the back sides of the two movable clamps 101, so that the two flexible bands 20 are separated from each other and maintain a certain distance. The lengths of the parallel flexible bands 20 are equal so that they hang at the same height between the two movable clamps 101. When in use, the parallel flexible bands 20 can apply force to the outer wall of the quartz crucible at the same time, ensuring the stability of the quartz crucible during handling. Because there is loose sand on the outer wall of the quartz crucible, the flexible hoop 20 is made of steel wire rope or chain. When clamping, the grooves or protrusions on the surface of the steel wire rope or chain press on the loose sand, which increases the friction between the flexible hoop 20 and the outer wall of the quartz crucible, and plays an anti-slip role, making the flexible hoop 20 clamp more stably.

[0024] Please continue reading. Figure 2 Furthermore, in order to ensure that the two adjacent flexible bands 20 hanging between the two movable clamps 101 can maintain a certain distance during use and avoid them moving away from or getting closer to each other, a parallel retainer 201 is provided between the two adjacent flexible bands 20. The parallel retainer 201 is a metal crossbeam. The parallel retainer 201 is fixed on the two adjacent flexible bands 20 and close to the middle of the flexible bands 20, which plays a limiting role and can keep the two adjacent flexible bands 20 parallel.

[0025] In the above embodiments, the movable clamping plate 101 is made of a resilient arc-shaped steel plate, and the force-applying arm 102 is set on the back of the movable clamping plate 101 and close to the middle or upper end of the movable clamping plate 101. When clamping and applying force to the quartz crucible, the upper end of the movable clamping plate 101 will adaptively deform along the outer wall of the quartz crucible under the force of the force-applying arm 102, and fit into the arc surface of the outer wall of the quartz crucible. In this way, the contact area between the movable clamping plate 101 and the quartz crucible can be increased. Furthermore, the resilient movable clamping plate 101 can adapt to quartz crucibles of different diameters and can fit into the arc surface of the outer wall of quartz crucibles of different diameters.

[0026] Please refer to Figure 2 and Figure 3Furthermore, to increase the applicability of this auxiliary handling fixture for demolding large-size quartz crucibles and to enable demolding of quartz crucibles of different diameters, symmetrical adjusting fasteners 103 are provided on both sides of the back of the movable clamping plate 101. Each adjusting fastener 103 has a through hole 104 through which the end of the flexible clamp 20 passes. The flexible clamp 20 can be freely pulled and pulled along the through hole 104 to adjust the length of the flexible clamp 20 clamping the quartz crucible. Adjusting bolts 105 corresponding to the through holes 104 are provided on the outer wall of each adjusting fastener 103. The adjusting bolts 105 are threadedly connected to the adjusting fastener 103 and can be inserted laterally into the corresponding through hole 104 along the outer wall of the adjusting fastener 103, abutting against the flexible clamp 20 to fix the flexible clamp 20. By adjusting the length of the flexible clamp 20, this auxiliary handling fixture for demolding large-size quartz crucibles can be used to clamp and demold quartz crucibles of different diameters. When clamping quartz crucibles of different diameters, it should be ensured that the straight-line distance between the upper ends of the two movable clamping plates 101 is less than the straight-line distance between the lower ends of the two movable clamping plates 101, and that the upper ends of the two movable clamping plates 101 do not contact each other.

[0027] Please continue reading. Figure 2 Furthermore, a fixing plate 202 is provided at the end of the flexible band 20 passing through the through hole 104 of the adjusting fastener 103. The fixing plate 202 connects the ends of the parallel flexible bands 20 in the same direction so that the length of the parallel flexible bands 20 can be adjusted synchronously along the through hole 104. When adjusting the length of the flexible band 20, the flexible bands 20 connected in parallel on the fixing plate 202 can be pulled synchronously along the through hole 104 by pulling the fixing plate 202.

[0028] Please continue reading. Figure 2 and Figure 3 Furthermore, the adjusting fastener 103 is located near the upper end of the back of the movable clamping plate 101, and a positioning plate 106 is provided at the lower end of the back of the movable clamping plate 101. A positioning hole 107 corresponding to the through hole 104 is provided on the positioning plate 106. The end of the flexible band 20 passes through the positioning hole 107 and then through the through hole 104 corresponding to the positioning hole 107. The flexible band 20 can be freely pulled along the through hole 104 and the positioning hole 107. The positioning plate 106 provides auxiliary positioning for the flexible band 20, so that the movable clamping plate 101 and the flexible band 20 remain upright when subjected to force, and the upper end, lower end and back of the movable clamping plate 101 can be subjected to force simultaneously.

[0029] Please refer to it again. Figure 2Furthermore, the surface of the movable clamp 101 that contacts the quartz crucible is knurled to form anti-slip ridges 109, which can increase the coefficient of friction between the clamp and the quartz crucible, thereby increasing the friction between the two.

[0030] Furthermore, each of the two force-applying arms 102 is fitted with an anti-slip sleeve 108, which is made of rubber and is convenient for workers to grip.

[0031] The auxiliary handling fixture for demolding large-sized quartz crucibles has a large contact area with the quartz crucibles, resulting in uniform force distribution and preventing damage. Moreover, it can be handled by two people, saving time and effort, and has high stability, further ensuring the safety of the quartz crucibles and preventing them from breaking.

[0032] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the invention. Those skilled in the art will understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. An auxiliary handling fixture for demolding large-size quartz crucibles, characterized in that: The device includes two opposing clamping members and a flexible band connecting the two clamping members. Each clamping member includes a movable clamping plate and a lever arm. The movable clamping plates of the two clamping members are positioned opposite each other, and the lever arms of the two clamping members are positioned opposite each other on the back of the opposing movable clamping plates. Both ends of the flexible band are connected to the back of the opposing movable clamping plates. The opposing movable clamping plates can be placed on both sides of the outer wall of the quartz crucible to be demolded, and the flexible band connected to the two movable clamping plates forms a ring around the quartz crucible along the lower side of the outer wall of the quartz crucible. By simultaneously lifting the lever arms on the two movable clamping plates upwards, the two movable clamping plates form a counter-clamping force on the upper side of the quartz crucible, and together with the flexible band, clamp the quartz crucible, thus securing it. The crucible is transported; at least two flexible bands are arranged side by side between two movable clamps, with the two ends of the parallel flexible bands facing the same direction close to the two sides of the back of the two movable clamps, and the lengths of the parallel flexible bands are equal; symmetrical adjustment and fixing components are arranged on both sides of the back of the movable clamps, each adjustment and fixing component is provided with a through hole for the end of the flexible band to pass through, the flexible band can be freely pulled and moved along the through hole to adjust the length of the flexible band holding the quartz crucible, and an adjustment bolt corresponding to the through hole is provided on the outer wall of each adjustment and fixing component, the adjustment bolt is threaded to the adjustment and fixing component, and can be inserted laterally into the corresponding through hole along the outer wall of the adjustment and fixing component, and abut against the flexible band to fix the flexible band.

2. The auxiliary handling fixture for demolding large-size quartz crucibles as described in claim 1, characterized in that: A parallel retainer is provided between two adjacent flexible bands. The parallel retainer is fixed on the two adjacent flexible bands and is close to the middle of the flexible bands, so that the two adjacent flexible bands remain parallel.

3. The auxiliary handling fixture for demolding large-size quartz crucibles as described in claim 2, characterized in that: The movable clamp is a resilient arc-shaped steel plate, and the arc surface of the movable clamp matches the arc surface of the outer wall of the quartz crucible.

4. The auxiliary handling fixture for demolding large-size quartz crucibles as described in claim 3, characterized in that: A fixing plate is provided at the end of the flexible band that passes through the through hole of the adjusting fastener. The fixing plate connects the ends of the parallel flexible bands that are in the same direction, so that the length of the parallel flexible bands can be adjusted synchronously along the through hole.

5. The auxiliary handling fixture for demolding large-size quartz crucibles as described in claim 4, characterized in that: The adjusting fastener is located at the upper end of the back of the movable clamping plate. A positioning plate is provided at the lower end of the back of the movable clamping plate. A positioning hole corresponding to the through hole is provided on the positioning plate. The end of the flexible band passes through the positioning hole and then through the through hole corresponding to the positioning hole. The flexible band can be freely pulled along the through hole and the positioning hole. The positioning plate provides auxiliary positioning for the flexible band, so that the movable clamping plate and the flexible band remain upright when subjected to force.

6. The auxiliary handling fixture for demolding large-size quartz crucibles as described in claim 5, characterized in that: The surface of the movable clamp that contacts the quartz crucible is provided with anti-slip ridges.

7. The auxiliary handling fixture for demolding large-size quartz crucibles as described in claim 1 or 6, characterized in that: The flexible band is a steel wire rope or chain.

8. The auxiliary handling fixture for demolding large-size quartz crucibles as described in claim 1, characterized in that: The lever arm is fitted with an anti-slip sleeve.

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