Crystal bar heating, splicing and feeding and discharging device and working method

Abstract

The invention discloses a crystal bar heating, splicing and feeding and discharging device. The device comprises a grabbing mechanism, a crystal bar overturning mechanism, a tray lifting mechanism, a crystal bar conveying mechanism, a crystal bar heating mechanism and a crystal bar splicing mechanism. The crystal bar turnover mechanism comprises a centering and clamping assembly, a turnover assembly, a first turnover support and a second turnover support, the second turnover support is fixed to the upper end of the first turnover support, the centering and clamping assembly is arranged at the top end of the first turnover support, the turnover assembly is arranged on the second turnover support, and the centering and clamping assembly is arranged on the second turnover support. The centering clamping assembly achieves horizontal movement through the centering clamping horizontal movement driving source, the centering clamping assembly achieves vertical movement through the centering clamping vertical movement driving source, and the fixed end of the centering clamping horizontal movement driving source is arranged at the top end of the first overturning support. According to the crystal bar heating, splicing and feeding and discharging device, the technical problems that in the technical field of crystal bar splicing, the production efficiency is low, the labor cost is high, and the splicing quality is poor are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of crystal rods, and in particular to a crystal rod heating, splicing, loading and unloading device and a working method. Background Art

[0002] There are many steps in the actual processing of silicon rods in the photovoltaic industry to become crystal rods. The fixture needs to be clamped multiple times, and many thread ends will appear. The length is between 250 and 650m (hereinafter referred to as short rods). However, the mainstream length of the current factory slicer processing is between 700 and 850m (hereinafter referred to as whole rods). The short rods alone cannot meet the use range of the trimming machine. If the short rods cannot be reused, it will cause a lot of waste for the company. The direct combination of short rods can meet the normal processing of the slicer. In order to reduce costs and increase efficiency, factories often use short rod splicing.

[0003] Then the splicing of crystal bars requires multiple processes. Conventional splicing of crystal bars requires the transportation of crystal bar raw materials, the adjustment of the end position of the crystal bar, the reheating of the crystal bar bonding surface, and finally the splicing of the crystal bars. At present, the splicing of crystal bars on the market is mainly done by manual splicing. Manual splicing of crystal bars greatly reduces the efficiency of crystal bar splicing, increases labor costs, and is also dangerous. Due to manual operation, the temperature uniformity during the splicing process cannot be guaranteed, so the quality of crystal bar splicing cannot be guaranteed. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, provide a crystal rod heating splicing loading and unloading device and working method, and solve the technical problems of low production efficiency, high labor cost and poor splicing quality in the field of crystal rod splicing technology.

[0005] In order to achieve the above technical objectives, the technical solution of the present invention provides a crystal rod heating splicing loading and unloading device and a working method, including:

[0006] A gripping mechanism, a crystal rod flipping mechanism, a tray lifting mechanism, a crystal rod transporting mechanism, a crystal rod heating mechanism and a crystal rod splicing mechanism; the crystal rod flipping mechanism includes a centering clamping assembly, a flipping assembly, a first flipping bracket and a second flipping bracket; the second flipping bracket is fixed to the upper end of the first flipping bracket; the centering clamping assembly is arranged at the top end of the first flipping bracket; the flipping assembly is arranged on the second flipping bracket; the centering clamping assembly realizes the horizontal movement of the centering clamping assembly through a centering clamping horizontal movement driving source; the centering clamping assembly realizes the vertical movement of the centering clamping assembly through a centering clamping vertical movement driving source; the fixed end of the centering clamping horizontal movement driving source is arranged on the top end of the first flipping bracket; the centering clamping assembly is arranged on the centering clamping horizontal movement plate through a support shaft; the bottom end of the centering clamping horizontal movement plate is slidably connected to the first flipping bracket through a centering clamping slider and a centering clamping guide rail; the output shaft of the centering clamping horizontal movement driving source is fixedly connected to one side of the centering clamping horizontal movement plate.

[0007] Compared with the prior art, the beneficial effects of the present invention include:

[0008] 1. High production efficiency: The crystal rod heating and splicing loading and unloading device provided by the invention utilizes a grabbing mechanism, a crystal rod turning mechanism, a tray lifting mechanism, a crystal rod transporting mechanism, a crystal rod heating mechanism and a crystal rod splicing mechanism to realize fully automatic crystal rod splicing, without manual operation, thus greatly improving work efficiency.

[0009] 2. High quality of splicing rods: The crystal rod heating and splicing loading and unloading device provided by the invention utilizes a gripping mechanism, a crystal rod turning mechanism, a tray lifting mechanism, a crystal rod transporting mechanism, a crystal rod heating mechanism and a crystal rod splicing mechanism to realize fully automatic crystal rod splicing, thus solving the problem of poor quality caused by manual splicing of rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of the crystal rod heating, splicing and loading and unloading device provided by the present invention;

[0011] Figure 2 It is a schematic diagram of the three-dimensional structure of the turning mechanism in the crystal rod heating splicing loading and unloading device provided by the present invention;

[0012] Figure 3 It is a schematic diagram of the three-dimensional structure of the centering clamping assembly in the crystal rod heating splicing loading and unloading device provided by the present invention;

[0013] Figure 4 It is a schematic diagram of the three-dimensional structure of the flip assembly in the crystal rod heating splicing loading and unloading device provided by the present invention;

[0014] Figure 5The three-dimensional structure diagram of the tray lifting mechanism in the crystal rod heating splicing loading and unloading device provided by the present invention Figure 1 ;

[0015] Figure 6 The three-dimensional structure diagram of the tray lifting mechanism in the crystal rod heating splicing loading and unloading device provided by the present invention Figure 2 . DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0019] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 This embodiment provides a crystal rod heating and splicing loading and unloading device, including: a grasping mechanism 1, a crystal rod turning mechanism 2, a tray lifting mechanism 3, a crystal rod transporting mechanism 4, a crystal rod heating mechanism 5 and a crystal rod splicing mechanism 6.

[0020] Furthermore, the crystal rod flipping mechanism 2 includes a centering clamping assembly 21 , a flipping assembly 22 , a first flipping bracket 23 and a second flipping bracket 24 . The second flip bracket 24 is fixed to the upper end of the first flip bracket 23, the centering clamping assembly 21 is arranged at the top end of the first flip bracket 23, and the flip assembly 22 is arranged on the second flip bracket 24. The centering clamping assembly 21 realizes the horizontal movement of the centering clamping assembly 21 through the centering clamping horizontal movement driving source 211, and the centering clamping assembly 21 realizes the vertical movement of the centering clamping assembly 21 through the centering clamping vertical movement driving source 212. The fixed end of the centering clamping horizontal movement driving source 211 is arranged on the top end of the first flip bracket 23, and the centering clamping assembly 21 is arranged on the centering clamping horizontal movement plate 214 through the support shaft 213. The bottom end of the centering clamping horizontal movement plate 214 is slidably connected to the first flip bracket 23 through the centering clamping slider and the centering clamping guide rail, and the output shaft of the centering clamping horizontal movement driving source 211 is fixedly connected to one side of the centering clamping horizontal movement plate 214.

[0021] Furthermore, the fixed end of the centering clamping vertical moving drive source 212 is fixedly set on the centering clamping vertical moving plate 215, and the output shaft of the centering clamping vertical moving drive source 212 passes through the centering clamping horizontal moving plate 214 and is fixedly connected to the bottom end of the centering clamping assembly 21. A centering clamping guide rod 216 is arranged between the centering clamping assembly 21 and the centering clamping vertical moving plate 214 to play a guiding role. A linear bearing is arranged between the centering clamping guide rod 216 and the centering clamping horizontal moving plate 214, and the linear bearing can realize the up and down sliding of the centering clamping guide rod 216.

[0022] Furthermore, the centering clamping assembly 21 includes a centering clamping base plate 217, a centering clamping slide plate 218, a centering clamping wheel 219 and a first displacement sensor. The first displacement sensor is arranged on the upper end of the centering clamping base plate 217 close to the side of the flipping assembly 22. The centering clamping base plate 217 is provided with a centering clamping groove running through the upper and lower parts. A plurality of centering clamping grooves are distributed on both sides of the centering clamping base plate 217. A connecting shaft is arranged in the centering clamping groove. The upper end of the connecting shaft is rotatably connected to the centering clamping wheel 219, and the lower end of the connecting shaft is fixedly connected to the centering clamping slide plate 218.

[0023] In this embodiment, the following explanation is required: due to subsequent process requirements, the crystal rod placed on the crystal rod transport mechanism 4 and transported to the crystal rod heating mechanism 5 needs to ensure that the narrow side of the crystal rod is in the horizontal plane and the wide side of the crystal rod is in the vertical plane, but the postures of the incoming crystal rods are different, so it is necessary to adjust the posture of the crystal rod through the crystal rod flipping mechanism 2 to meet the process requirements.

[0024] Specifically, the crystal rod is grasped by the grasping mechanism 1 and placed on the centering clamping base plate 217. The distance between the side of the crystal rod close to the first displacement sensor and the first displacement sensor is first detected by the first displacement sensor. A fixed value set by a program is compared with the data measured by the first displacement sensor. If the measured data value is greater than the fixed value set by the program, there is no need to flip the crystal rod. If the measured data value is less than the fixed value set by the program, the crystal rod needs to be flipped.

[0025] Specifically, when the crystal rod 7 needs to be flipped, the crystal rod 7 to be flipped must first be clamped and positioned before flipping the crystal rod 7. Specifically, the output shaft of the center clamping horizontal moving drive source 211 contracts to drive the center clamping horizontal moving plate 214 to move toward one side of the flip assembly 22.

[0026] Furthermore, the centering clamping slide 218 is slidably connected to the centering clamping base plate 217 through a guide rail slider, and the centering clamping assembly 21 also includes a centering clamping drive source 220 and a centering clamping drive shaft 221. The fixed end of the centering clamping drive source 220 is fixedly connected to the centering clamping base plate 217, and the output shaft of the centering clamping drive source 220 is hinged to one end of the centering clamping drive shaft 221, and the other end of the centering clamping drive shaft 221 is hinged to the centering clamping slide 218 through a centering clamping support 222.

[0027] Specifically, when the crystal rod 7 needs to be turned over, the crystal rod 7 is firstly centered and clamped before turning over the crystal rod 7 .

[0028] Specifically, the plurality of centering clamping wheels 219 are arranged on both sides of the centering clamping base plate 217 along the length direction of the centering clamping base plate 217 .

[0029] Specifically, the centering clamping wheels 219 are slidably connected to the centering clamping base plate 217 , and the two rows of centering clamping wheels 219 move toward each other until they abut against the crystal rod 7 , thereby centering and limiting the crystal rod 7 .

[0030] Specifically, there are two center clamping slides 218, two centering clamping drive sources 220, and four centering clamping drive shafts 221. One centering clamping drive source 220 drives and connects two centering clamping drive shafts 221. The two centering clamping drive sources 220 on the same side are arranged at an angle, one end of one of the centering clamping drive shafts 221 is hinged to one of the centering clamping slides 218, and one end of the other centering clamping drive shaft 221 is hinged to another of the centering clamping slides 218.

[0031] Specifically, when the two rows of centering clamping wheels 219 move toward each other, the output shafts of the two centering clamping drive sources 220 contract, thereby driving the two centering clamping slides 218 to move toward each other until the two rows of centering clamping wheels 219 abut against the crystal rod 7 .

[0032] Furthermore, the output shaft of the centering clamping vertical movement driving source 212 is extended, thereby driving the centering clamping assembly 21 to move toward the flipping assembly 22 in the vertical direction.

[0033] Furthermore, the flip assembly 22 includes a third flip bracket 223, a flip drive source 224, and a flip movement drive source 225. The third flip bracket 223 is arranged on both sides of the second flip bracket 24. One side of the third flip bracket 223 is fixedly connected to the fixed end of the flip drive source 224. The outer shell of the flip drive source 224 is provided with four second displacement sensors 228 through the bracket. The third flip bracket 223 is slidably connected to the second flip bracket 24 through a slider guide rail. The fixed end of the flip movement drive source 225 is fixedly connected to the top of the second flip bracket 24.

[0034] Specifically, the four second displacement sensors 228 located in the housing of the flip driving source 224 are distributed at the four corners of the flip driving source 224 . The second displacement sensors 228 provided in this embodiment calculate the flatness of the two end surfaces of the crystal rod.

[0035] In this embodiment, the following explanation is required: since the device splices the two crystal rods, the flatness of the end faces of the two crystal rods must be ensured during the splicing process, that is, one of the two end faces of a crystal rod with a relatively larger flatness is selected for splicing. However, the incoming crystal rods are placed in different postures. Therefore, in order to meet the splicing process requirements, the end faces of the crystal rods need to be adjusted to meet the splicing process requirements.

[0036] Furthermore, the output end of the flipping mobile driving source 225 is hinged with a moving rack 226, and the moving rack 226 is slidably connected to the top of the third flipping bracket 223 through a slider guide rail. The moving rack 226 is fixedly connected to the top of the third flipping bracket 223 through a connecting block, and the two moving racks 226 are arranged opposite to each other; a gear 227 is rotatably connected between the two moving racks 226.

[0037] Specifically, two flipping movement driving sources 225 are provided, and two moving racks 226 are provided. The two flipping movement driving sources 225 and the moving racks 226 are arranged crosswise and symmetrically.

[0038] Specifically, when multiple sections of crystal rods 7 are spliced, the positions of the crystal rods 7 must be kept consistent, so the posture of the crystal rods 7 needs to be adjusted, and the turning assembly 22 needs to be used to turn the crystal rods 7.

[0039] Specifically, when the crystal rod 7 needs to be flipped, the centering clamping assembly 21 has already centered the crystal rod 7 and lifted the crystal rod 7 to the bottom of the flipping assembly 22.

[0040] Specifically, when the crystal rod 7 is flipped, the crystal rod 7 is first clamped, at which time the output shaft of the flipping moving driving source 225 is extended, and the two moving racks 226 move toward each other relative to the gear 227, thereby driving the two third flipping brackets 223 to move toward each other along the top plate of the second flipping bracket 24, so that the output ends of the flipping driving sources 224 on the two third flipping brackets 223 abut against the two end surfaces of the crystal rod 7. At this time, the output ends of the two flipping driving sources 224 rotate, thereby driving the rotation of the crystal rod 7, so as to adjust the crystal rod 7 to be in the positive position. After the adjustment is completed, the crystal rod is supported by the centering clamping assembly 21, so that the crystal rod is placed on the upper end of the center clamping base plate 217. At the same time, the second displacement sensor 28 calculates that one of the two end faces of the crystal rod is relatively flat. If the direction of the crystal rod needs to be reversed, the instruction is sent to the grasping mechanism 1. When the grasping mechanism 1 grasps the crystal rod and places it on the crystal rod transporting mechanism 4, the crystal rod is rotated, thereby adjusting the direction of the crystal rod so that the relatively flat end faces of the two crystal rods to be spliced ​​are placed on the same side.

[0041] Furthermore, the pallet lifting mechanism 3 includes a pallet lifting bracket 31, a pallet lifting drive source 32, and a pallet conveying assembly 33. The pallet conveying assembly 33 is placed at the upper end of the pallet lifting bracket 31, and the pallet lifting bracket 31 is slidably connected to the pallet lifting bracket 34 through a slider guide rail.

[0042] Furthermore, the fixed end of the pallet lifting drive source is fixedly connected to the bottom end of the pallet lifting bracket, the output shaft of the pallet lifting drive source 32 is rotatably connected to a lifting wheel 35, the lifting wheel 35 is wrapped with a lifting chain 36, one end of the lifting chain 36 is fixedly connected to the bottom end of the pallet lifting bracket 34, and the other end of the lifting chain 36 is fixedly connected to one side of the pallet lifting bracket 31.

[0043] Specifically, the crystal rod transport mechanism 4 includes a double-layer tray conveying mechanism 41. The upper tray conveying mechanism 41 mainly conveys trays and the crystal rods 7 on the trays, and the lower tray conveying mechanism 41 mainly conveys empty trays for circulating empty trays.

[0044] Specifically, the tray lifting mechanism 3 can realize the circulation of empty trays in the crystal rod transporting mechanism 4 without manual operation, which greatly improves the production efficiency and reduces the labor cost.

[0045] Specifically, when the tray carrying the crystal rod is placed on the tray conveying assembly 33 at one end, after the grasping mechanism 1 takes away the crystal rod 7, the empty tray is finally transported to the other tray lifting assembly 33 through the crystal rod conveying mechanism 4. At this time, the output shaft of the tray lifting drive source 32 is extended, thereby driving the tray conveying assembly 33 to descend. When it descends to the same horizontal line as the tray conveying mechanism 41 located below, the conveying track of the tray conveying assembly 33 runs, driving the empty tray to be transported to the tray conveying mechanism 41. After being transported by the tray conveying mechanism 41, it flows to another tray conveying assembly 33. At this time, the output shaft of the other tray lifting drive source 31 contracts, thereby driving the tray conveying assembly 33 to lift, until it is lifted to the same horizontal line as the tray conveying mechanism 41 located above. At this time, the conveying track of the tray conveying assembly 33 runs, driving the empty tray to be transported to the tray conveying mechanism 41 for placing the crystal rod 7. Furthermore, the crystal rod transporting mechanism 4 is arranged on both sides of the crystal rod heating mechanism 5, the tray lifting mechanism 3 is arranged on the side of the crystal rod transporting mechanism 4 away from the crystal rod heating mechanism 5, and the grasping mechanism 1 for grasping the crystal rod 7 is arranged next to the crystal rod transporting mechanism 3.

[0046] Specifically, the following explanation is required in this embodiment: in order to meet the slicing work after the crystal rods are spliced, the incoming crystal rods need to be heated to 29.5°C, which is equal to the room temperature, to meet the subsequent slicing process. Therefore, the crystal rods are transported to the crystal rod heating mechanism 5 for heating via the crystal rod transport mechanism 4.

[0047] Preferably, the crystal rod heating mechanism 5 is a microwave heating furnace, and the expansion and contraction rate of the crystal rod is controlled so that the crystal rod is kept in a constant temperature state (29.5° C.).

[0048] Preferably, the grasping mechanism 1 adopts a robotic arm for grasping.

[0049] Preferably, the pallet conveying mechanism 4 adopts a crawler conveying method.

[0050] Preferably, the pallet conveying assembly 33 conveys the pallet by means of a crawler conveyor.

[0051] The invention also provides a working method of a crystal rod heating and splicing loading and unloading device, including the following working steps:

[0052] S1. Use an AGV to transport the crystal ingot raw material to the vicinity of the crystal ingot turning mechanism 2.

[0053] S2. Use the grasping mechanism 1 to grasp the crystal rod 7 and place it on the centering clamping base plate 217. Use the first displacement sensor to identify whether the crystal rod needs to be flipped. If necessary, the crystal rod flipping mechanism 2 starts working to flip the crystal rod and adjust the placement of the crystal rod; if not, the crystal rod transport mechanism 4 is directly placed through the grasping mechanism 1.

[0054] S3, using the grasping mechanism 1 to grasp the turned crystal ingot onto the tray conveying assembly 33, and transporting it to the crystal ingot heating mechanism 5 via the crystal ingot transporting mechanism 4 for end surface heating.

[0055] S4, the heated crystal rod 7 passes through the crystal rod transport mechanism 4 and arrives on the tray conveying assembly 33, waiting to be grasped by the grasping mechanism 1.

[0056] S5, the grabbing mechanism 1 grabs the crystal rods 7 after multiple stages of heating and places them on the crystal rod splicing mechanism 6 to perform crystal rod splicing.

[0057] S6, the grasping mechanism 1 grasps the spliced ​​crystal rod 7 and places it on another crystal rod transporting mechanism 4, and transports it to the next workstation.

[0058] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A device for loading and unloading crystal rods for heating and splicing, characterized in that: include: Grabbing mechanism, crystal rod flipping mechanism, tray lifting mechanism, crystal rod transport mechanism, crystal rod heating mechanism and crystal rod splicing mechanism; the crystal rod flipping mechanism includes a centering clamping assembly, a flipping assembly, a first flipping bracket and a second flipping bracket; the second flipping bracket is fixed to the upper end of the first flipping bracket; the centering clamping assembly is arranged at the top end of the first flipping bracket; the flipping assembly is arranged on the second flipping bracket; the centering clamping assembly realizes the horizontal movement of the centering clamping assembly through a centering clamping horizontal movement driving source; the centering clamping assembly realizes the vertical movement of the centering clamping assembly through a centering clamping vertical movement driving source; the fixed end of the centering clamping horizontal movement driving source is arranged at the top end of the first flipping bracket; the centering clamping assembly is arranged on the centering clamping horizontal movement plate through a support shaft; The bottom end of the centering clamping horizontal moving plate is slidably connected to the first flip bracket through a centering clamping slider and a centering clamping guide rail; the output shaft of the centering clamping horizontal moving drive source is fixedly connected to one side of the centering clamping horizontal moving plate.

2. The device for loading and unloading the crystal rods for heating and splicing according to claim 1 is characterized in that: The fixed end of the centering clamping vertical moving drive source is fixedly set on the centering clamping vertical moving plate; the output shaft of the centering clamping vertical moving drive source passes through the centering clamping horizontal moving plate and is fixedly connected to the bottom end of the centering clamping assembly; a centering clamping guide rod is arranged between the centering clamping assembly and the centering clamping vertical moving plate; a linear bearing is arranged between the centering clamping guide rod and the centering clamping horizontal moving plate.

3. The crystal rod heating splicing loading and unloading device according to claim 2 is characterized in that: The centering clamping assembly includes a centering clamping base plate, a centering clamping slide plate, a centering clamping wheel and a first displacement sensor; the first displacement sensor is arranged on the upper end of the centering clamping base plate close to the side of the flip assembly; the centering clamping base plate is provided with a centering clamping slide groove running through from top to bottom; a plurality of the centering clamping slide grooves are distributed on both sides of the centering clamping base plate; a connecting shaft is arranged in the centering clamping slide groove; the upper end of the connecting shaft is rotatably connected to the centering clamping wheel; the lower end of the connecting shaft is fixedly connected to the centering clamping slide plate.

4. The crystal rod heating splicing loading and unloading device according to claim 3 is characterized in that: The centering clamping slide is slidably connected to the centering clamping base plate through a guide rail slider; the centering clamping assembly also includes a centering clamping drive source and a centering clamping drive shaft; the fixed end of the centering clamping drive source is fixedly connected to the centering clamping base plate; the output shaft of the centering clamping drive source is hinged to one end of the centering clamping drive shaft; the other end of the centering clamping drive shaft is hinged to the centering clamping slide through a centering clamping support.

5. The device for loading and unloading the crystal rods for heating and splicing according to claim 4 is characterized in that: The flip assembly includes a third flip bracket, a flip drive source, and a flip movement drive source; the third flip bracket is arranged on both sides of the second flip bracket; one side of the third flip bracket is fixedly connected to the fixed end of the flip drive source; the outer shell of the flip drive source is provided with four second displacement sensors through the bracket; the third flip bracket is slidably connected to the second flip bracket through a slider guide rail; the fixed end of the flip movement drive source is fixedly connected to the top end of the second flip bracket.

6. The device for loading and unloading the crystal rods for heating and splicing according to claim 5, characterized in that: The output end of the flipping moving driving source is hinged with a moving rack; the moving rack is slidably connected to the top end of the third flipping bracket through a slider guide; the moving rack is fixedly connected to the top end of the third flipping bracket through a connecting block; the two moving racks are arranged opposite to each other; a gear is rotatably connected between the two moving racks.

7. The device for loading and unloading the crystal rods for heating and splicing according to claim 6, characterized in that: The pallet lifting mechanism comprises a pallet lifting bracket, a pallet lifting driving source, and a pallet conveying assembly; the pallet conveying assembly is disposed at the upper end of the pallet lifting bracket; the pallet lifting bracket is slidably connected to the pallet lifting bracket via a slider guide rail.

8. The device for loading and unloading the crystal rods for heating and splicing according to claim 7, characterized in that: The fixed end of the pallet lifting drive source is fixedly connected to the bottom end of the pallet lifting bracket; the output shaft of the pallet lifting drive source is rotatably connected to a lifting wheel; the lifting wheel is wrapped with a lifting chain; one end of the lifting chain is fixedly connected to the bottom end of the pallet lifting bracket; the other end of the lifting chain is fixedly connected to one side of the pallet lifting bracket.

9. The device for loading and unloading the crystal rods for heating and splicing according to claim 8, characterized in that: The crystal ingot transport mechanism is arranged on both sides of the crystal ingot heating mechanism, and the tray lifting mechanism is arranged on the side of the crystal ingot transport mechanism away from the crystal ingot heating mechanism; the grasping mechanism is arranged on one side of the crystal ingot transport mechanism for grasping the crystal ingot.

10. A working method of a crystal rod heating and splicing loading and unloading device, characterized in that: The device for heating and splicing the crystal rods as described in claims 1 to 9 includes the following working steps: S1. Use an AGV to transport the crystal ingot raw material to the vicinity of the crystal ingot turning mechanism. S2, using the grasping mechanism to grasp the crystal ingot and place it on the centering clamping base plate, and using the first displacement sensor to identify whether the crystal ingot needs to be turned over. If necessary, the crystal ingot turning mechanism starts to work, turns the crystal ingot over, and adjusts the placement of the crystal ingot; If not needed, the crystal rod transport mechanism is directly placed through the grabbing mechanism. S3, using the grasping mechanism to grasp the turned over crystal ingot onto the tray conveying assembly, and transporting it to the crystal ingot heating mechanism via the crystal ingot transporting mechanism for heating. S4. The heated crystal rod passes through the crystal rod transport mechanism and arrives at the tray conveying assembly, waiting to be grasped by the grasping mechanism. S5, the grasping mechanism grasps the crystal ingots after multiple stages of heating and places them on the crystal ingot splicing mechanism to perform crystal ingot splicing. S6. The grasping mechanism grasps the spliced ​​crystal rod and places it on another crystal rod transporting mechanism to transport it to the next workstation.

Images