Conveying device and framing and stacking equipment

Abstract

The utility model discloses a conveying device and framing and stacking equipment, and relates to the technical field of material conveying, the conveying device comprises a support, a transmission belt and a first positioning mechanism; rotating shafts are arranged at two ends of the bracket; the transmission belt is mounted on the bracket and is in transmission connection with the two rotating shafts; a feeding station, a discharging station and a discharging station are sequentially arranged at the top of the transmission belt; the first positioning mechanism comprises two first telescopic driving parts and two first positioning blocks, the two first telescopic driving parts are arranged on the two sides of the support correspondingly, the output ends of the two first telescopic driving parts are oppositely arranged, and the two first positioning blocks are arranged at the output ends of the two first telescopic driving parts correspondingly. According to the conveying device in the embodiment, the two first telescopic driving pieces drive the two first positioning blocks to move in the opposite directions correspondingly, so that the two first positioning blocks can abut against the two corners of the containing frame correspondingly, the containing frame is accurately positioned to the discharging station, and the reliability is better.

Description

Technical Field

[0001] This utility model relates to the field of material transportation technology, and in particular to a conveying device and a palletizing equipment. Background Technology

[0002] In material transportation, transmission belts are one of the most common transportation devices. By placing materials on the transmission belt, the transmission belt can transfer the position of the materials. Due to the simple structure and low cost of transmission belts, many automated production systems use transmission belts as feeding devices.

[0003] Generally, drive belts are mainly used for continuous feeding, that is, the drive belt runs continuously to continuously transport materials. They do not have the function of pausing or positioning materials. If the material movement needs to be stopped, the entire drive must be stopped at the same time, which seriously affects the user experience. Furthermore, repeated switching of the drive belt can easily cause damage, which is not conducive to long-term use. In addition, it is impossible to accurately control the stopping position of the material, resulting in poor reliability. Utility Model Content

[0004] The main purpose of this utility model is to propose a conveying device and a framing and palletizing equipment, which aims to solve the existing technical problems of inaccurate control of the material stopping position and poor reliability.

[0005] To achieve the above objectives, this utility model proposes a conveying device for conveying placement frames, the conveying device comprising:

[0006] The bracket extends along a first horizontal direction, and each end of the bracket along the first horizontal direction is provided with a rotating shaft. The rotating shaft extends along a second horizontal direction, which is perpendicular to the first horizontal direction. The bracket is also provided with a first rotation drive component that is pulsatorically connected to one of the rotating shafts.

[0007] A transmission belt is mounted on the bracket and is connected to two rotating shafts. The top of the transmission belt is provided with a feeding station, a discharging station, and a discharging station in sequence along the first horizontal direction. The placement frame is placed on the transmission belt at the feeding station. The first rotation drive can drive the corresponding rotating shaft to rotate, so as to drive the transmission belt to transport the placement frame to the discharging station and the discharging station in sequence.

[0008] The first positioning mechanism includes two first telescopic drive members and two first positioning blocks. The two first telescopic drive members are respectively disposed on both sides of the bracket along the second horizontal direction, and the output ends of the two first telescopic drive members face each other. The two first positioning blocks are respectively disposed on the output ends of the two first telescopic drive members. The two first telescopic drive members can respectively drive the two first positioning blocks to move towards or away from each other, so as to abut or separate from the two corners of the placement frame located at the feeding station.

[0009] In one embodiment, the bracket includes a support platform and two support frames, the two support frames being respectively connected to both ends of the support platform along the first horizontal direction, the two rotating shafts being respectively disposed on the two support frames, and the first rotation drive member being disposed on one of the support frames;

[0010] The top and bottom of the transmission belt abut against opposite sides of the support platform along the vertical direction, and both of the first telescopic drive members are mounted on the support platform.

[0011] In one embodiment, each of the support frames includes a horizontal bar and two vertical bars, the two ends of the horizontal bar along the second horizontal direction are respectively connected to the top of the two vertical bars; the two ends of each of the rotating shafts are respectively connected to the two corresponding vertical bars through a hinge seat, and the first rotation drive member is disposed on the corresponding vertical bar;

[0012] The support platform includes two connecting rods and multiple fixing rods. The two connecting rods are spaced apart along the first horizontal direction, and the multiple fixing rods are spaced apart and located between the two connecting rods. The two ends of each connecting rod along the first horizontal direction are respectively connected to the two corresponding vertical rods, and the two ends of each fixing rod along the first horizontal direction are respectively connected to the two corresponding horizontal rods. The two first telescopic drive members are respectively installed on the two connecting rods.

[0013] The transmission belts are provided in multiple ways, and the multiple transmission belts are spaced apart along the second horizontal direction. The number of transmission belts is the same as the number of fixed rods and they are arranged in a one-to-one correspondence. The top and bottom of each transmission belt abut against the corresponding fixed rod on opposite sides along the vertical direction.

[0014] In one embodiment, the height of both connecting rods is higher than the height of each of the fixed rods.

[0015] In one embodiment, a plurality of stop bars are provided at the top of the crossbar near the discharge station. The plurality of stop bars are spaced apart along the second horizontal direction and protrude from the top surface of the transmission belt.

[0016] In one embodiment, the conveying device further includes two rotary pressing cylinders, which are disposed between any two adjacent fixed rods, and the output end of each rotary pressing cylinder is connected to a blocking block;

[0017] One of the rotary pressing cylinders is located on the side of the feeding station near the discharging station, and the other rotary pressing cylinder is located on the side of the discharging station near the discharge station. The two rotary pressing cylinders can respectively drive the two blocking blocks to protrude from the top surface of the transmission belt.

[0018] In one embodiment, the conveying device further includes a first proximity sensor, which is disposed on the connecting rod near the unloading station, and both of the rotary pressing cylinders are electrically connected to the first proximity sensor.

[0019] In one embodiment, the conveying device further includes a second positioning mechanism, which includes two second telescopic drive members and two second positioning blocks. The two second telescopic drive members are respectively disposed on both sides of the bracket along the second horizontal direction, and the output ends of the two second telescopic drive members face each other. The two second positioning blocks are respectively disposed on the output ends of the two second telescopic drive members. The two second telescopic drive members can respectively drive the two second positioning blocks to move towards or away from each other, so as to abut or separate from the two corners of the placement frame located at the feeding station.

[0020] In one embodiment, notches matching the corner shapes of the placement frame are provided on the opposite sides of the two first positioning blocks and the opposite sides of the two second positioning blocks.

[0021] This utility model also proposes a framing and stacking device for placing pistons in placement frames and stacking the placement frames containing the pistons, the framing and stacking device comprising:

[0022] A feeding device, comprising a carrying mechanism and a clamping mechanism, wherein the carrying mechanism is used to stack and place the placement frame;

[0023] As described above, the conveying device has the clamping mechanism used to clamp the placement frame on the bearing mechanism and place it at the feeding station. The transmission belt can drive the placement frame to move sequentially to the unloading station along the first horizontal direction. The first positioning mechanism can position the placement frame at the unloading station.

[0024] A detection device is disposed on one side of the bracket along the first horizontal direction, and the detection device is used to detect the piston;

[0025] A material conveying device is used to transfer the tested piston to the placement frame positioned at the discharge station; the transmission belt can also drive the placement frame containing the piston to move to the discharge station.

[0026] A palletizing device, comprising a receiving mechanism and a stacking mechanism; the stacking mechanism is used to place the placement frame located at the discharge station onto the receiving mechanism.

[0027] In this embodiment, the conveying device ensures the stability of the conveyor belt by mounting it on the support, maintaining smooth transport of the placement frame. The first rotating drive unit drives the rotating shaft, which in turn drives the conveyor belt, enabling automatic transport of the placement frame from the feeding station to the discharging station and then to the discharge station, reducing manual intervention and improving work efficiency. Furthermore, the first positioning mechanism is positioned on the support near the discharging station to prevent the placement frame at the discharging station from moving towards the discharge station. In actual use, when the placement frame moves from the feeding station to the discharging station, the two first telescopic drive units drive the two first positioning blocks to move towards each other, allowing the two positioning blocks to abut against the two corners of the placement frame, thus accurately positioning the placement frame at the discharging station for better piston placement and reliability. Moreover, the telescopic drive unit's extension and retraction of the first positioning blocks allows for adjustment and correction of the placement frame's position and orientation during contact with the corners, further improving the accuracy of piston placement. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figure 1 A schematic diagram of a structure of an embodiment of the framing and palletizing equipment provided by this utility model;

[0030] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0031] Figure 3 for Figure 1 Enlarged view of B in the middle;

[0032] Figure 4 A schematic diagram of the conveying device in one embodiment of the framing and palletizing equipment provided by this utility model;

[0033] Figure 5 for Figure 4 Enlarged view of C in the middle;

[0034] Figure 6 for Figure 4 Enlarged view of D;

[0035] Figure 7 for Figure 4 Enlarged view of E in the middle;

[0036] Figure 8 A schematic diagram of the palletizing device in one embodiment of the framing and palletizing equipment provided by this utility model;

[0037] Figure 9 for Figure 8 Enlarged view of F in the middle;

[0038] Figure 10 for Figure 8 A magnified view of G in the image.

[0039] Explanation of icon numbers:

[0040] 100. Palletizing and framing equipment; 1. Feeding device; 11. Bearing mechanism; 111. Bearing trolley; 112. Fixed frame; 12. Clamping mechanism; 121. Base; 122. Lifting seat; 123. Lifting plate; 124. Gripper; 2. Conveying device; 21. Bracket; 211. Support platform; 2111. Connecting rod; 2112. Fixed rod; 212. Support frame; 2121. Horizontal bar; 2122. Vertical bar; 213. Stop bar; 214. First blocking block; 215. Second blocking block; 22. Transmission belt; 221. Feeding station; 222. Discharging station; 223. Discharging station; 23. First positioning mechanism; 231. First telescopic drive component; 232. First positioning block; 24. Second positioning mechanism; 241. Second telescopic drive component; 242. Second positioning block; 25. Rotating shaft; 251. Transmission wheel 26. First rotation drive component; 27. First proximity sensor; 28. Second proximity sensor; 3. Detection device; 4. Material conveying device; 41. Robotic arm; 5. Palletizing device; 51. Stacking mechanism; 511. Support base; 5111. Support plate; 512. Slide; 513. Lifting mechanism; 514. Mounting plate; 515. Gripper; 52. Receiving mechanism; 521. Receiving cart; 522. Positioning frame; 5221. Third rotary pressing cylinder; 5222. Stop block; 53. Auxiliary positioning mechanism; 531. Mounting frame; 5311. Mounting space; 5312. Rotating rod; 5313. Sprocket; 5314. Transmission chain; 5315. Guide rod; 532. Moving seat; 5321. Horizontal plate; 5322. Vertical plate; 5323. Extension plate; 5324. Third telescopic drive component; 5325. Limiting block;

[0041] 200. Placement box.

[0042] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] 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 scope of protection of the present utility model.

[0044] It should be noted that if the embodiments of this utility model involve horizontal directional indicators (such as up, down, left, right, front, back, etc.), the horizontal directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the horizontal directional indicators will also change accordingly.

[0045] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0046] In material transportation, transmission belts are one of the most common transportation devices. By placing materials on the transmission belt, the transmission belt can transfer the position of the materials. Due to the simple structure and low cost of transmission belts, many automated production systems use transmission belts as feeding devices.

[0047] Generally, drive belts are mainly used for continuous feeding, that is, the drive belt runs continuously to continuously transport materials. They do not have the function of pausing or positioning materials. If the material movement needs to be stopped, the entire drive must be stopped at the same time, which seriously affects the user experience. Furthermore, repeated switching of the drive belt can easily cause damage, which is not conducive to long-term use. In addition, it is impossible to accurately control the stopping position of the material, resulting in poor reliability.

[0048] This utility model proposes a framing and palletizing equipment 100.

[0049] Please see Figures 1-10 In one embodiment of this utility model, the framing and palletizing equipment 100 is used to place pistons in placement frames 200 and stack the placement frames 200 containing pistons. The framing and palletizing equipment 100 includes a feeding device 1, a conveying device 2, a detection device 3, a material handling device 4, and a palletizing device 5. The feeding device 1 includes a bearing mechanism 11 and a clamping mechanism 12. The bearing mechanism 11 is used to stack and place placement frames 200. The conveying device 2 includes a support 21 and a transmission belt 22 mounted on the support 21 and extending along a first horizontal direction. The top of the transmission belt 22 has a feeding station 221, a discharging station 222, and a discharging station 223 in sequence along the first horizontal direction. The feeding device 1 is located near the feeding station 221, and a first positioning mechanism 23 is located on the support 21 near the discharging station 222. The clamping mechanism 12 is used to clamp the placement frames 200 on the bearing mechanism 11 and place them on the transmission belt 22 at the feeding station 221. The transmission belt 22 can drive the placement frame 200 to move sequentially to the unloading station 222 along the first horizontal direction. The first positioning mechanism 23 is used to position the placement frame 200 at the unloading station 222. The detection device 3 is set on one side of the support 21 along the first horizontal direction. The detection device 3 is used to detect the piston. The conveying device 4 is set close to the detection device 3. The conveying device 4 includes a robotic arm 41. The robotic arm 41 is used to transfer the detected piston to the placement frame 200 located at the unloading station 222. The transmission belt 22 can also drive the placement frame 200 with the piston to move to the unloading station 223. The stacking device 5 is set close to the unloading station 223. The stacking device 5 includes a receiving mechanism 52, a stacking mechanism 51 and an auxiliary positioning mechanism 53. The stacking mechanism 51 stacks the placement frame 200 located at the unloading station 223 onto the receiving mechanism 52. The auxiliary positioning mechanism 53 is used to position the placement frame 200 located on the receiving mechanism 52.

[0050] In this embodiment, the framing and palletizing equipment 100 stacks multiple placement frames 200 on the supporting mechanism 11, facilitating the clamping mechanism 12 to sequentially clamp each placement frame 200 and place it sequentially on the conveying device 2. Specifically, the conveying mechanism's transmission belt 22 has a feeding station 221, a discharging station 222, and a discharging station 223. The clamping mechanism 12 places the placement frame 200 on the transmission belt 22 at the feeding station 221. Driven by the transmission belt 22, the placement frame 200 faces... The unloading station 222 moves, and when it reaches the unloading station 222, the first positioning mechanism 23 positions the placement frame 200 at the unloading station 222, thereby keeping the placement frame 200 fixed. The first positioning mechanism 23 can also appropriately adjust and straighten the placement posture of the placement frame 200, making it easier for the robotic arm 41 to place the piston into the placement frame 200. After the detection mechanism detects the piston, the piston is transferred to the placement frame 200 located at the unloading station 222 under the action of the robotic arm 41, thus completing the process. The process involves placing pistons in the placement frame 200. Once a certain number of pistons have been placed in the placement frame 200, the first positioning mechanism 23 stops positioning the placement frame 200. At this point, the placement frame 200 can continue to move to the discharge station 223 along with the conveyor belt 22. When the placement frame 200 is located at the discharge station 223, the stacking mechanism 51 in the stacking device 5 clamps the placement frame 200 and places it on the receiving mechanism 52. The auxiliary positioning mechanism 53 is used to position the placement frame 200 located on the receiving mechanism 52, thereby preventing the multiple placement frames 200 stacked on the receiving mechanism 52 from shaking during the stacking process. Through the aforementioned feeding device 1, conveying device 2, detection device 3, material handling device 4, and stacking device 5, the pistons can be automatically loaded into the placement frame 200 after detection, and the placement frames 200 containing pistons can be stacked without relying on manual operation. This significantly improves the efficiency of piston loading and stacking and reduces the intensity of manual labor.

[0051] Specifically, it should be noted that the carrying mechanism 11 is used to stack the placement frames 200 without pistons, and the clamping mechanism 12 clamps the topmost placement frame 200 on the carrying mechanism 11 each time. Stacking means placing in a stack. The auxiliary positioning mechanism 53 is mainly used to position the topmost placement frame 200 on the receiving mechanism 52, thus preventing all the placement frames 200 on the receiving mechanism 52 from shaking.

[0052] It should be noted that the placement frame 200 mentioned in this embodiment is a square placement frame 200 with four corners. Specifically, each placement frame 200 has several pins fixed at its top and a slot for the pins to be inserted at its bottom. When the placement frames 200 are stacked, the pins on the lower placement frame 200 are inserted into the slots of the upper placement frame 200, thereby improving the stability of the placement frames 200 when stacked.

[0053] Furthermore, several mold bases for inserting pistons are installed on the inner bottom wall of the placement frame 200 in a mating connection manner. The pistons are placed in the placement frame 200 and fitted onto the mold bases in a mating connection manner to prevent the pistons from shaking when the placement frame 200 is moved.

[0054] It should be noted that the robotic arm 41 and the detection device 3 can be the existing robotic arm 41 and piston detection device 3.

[0055] like Figure 1 As shown, in this embodiment, the first horizontal direction is the front-to-back direction, the second horizontal direction is the left-to-right direction, and the vertical direction is the up-and-down direction.

[0056] Please see Figure 2 and Figure 3 In one embodiment, the clamping mechanism 12 includes a base 121, a lifting seat 122, and a lifting plate 123. The base 121 extends along a second horizontal direction, which is perpendicular to the first horizontal direction. The conveying device 2 and the carrying mechanism 11 are both disposed on one side of the base 121 along the first horizontal direction, and the carrying mechanism 11 and the conveying device 2 are spaced apart along the second horizontal direction. The lifting seat 122 is slidably disposed on the base 121 and can slide along the second horizontal direction. One side of the lifting plate 123 slides with the side of the lifting seat 122 facing the conveying device 2, and the lifting plate 123 can be vertically raised and lowered relative to the lifting seat 122. The bottom of the lifting plate 123 is provided with a gripper 124, which is used to grip the placement frame 200 on the carrying mechanism 11 and place it on the transmission belt 22 at the feeding station 221.

[0057] Understandably, the combination of the base 121, the lifting seat 122, and the lifting plate 123 enables precise positioning of the placement frame 200. The sliding of the lifting seat 122 along the second horizontal direction and the vertical lifting action of the lifting plate 123 ensure that the gripper 124 can reach above the bearing mechanism 11 and accurately grip the placement frame 200 from the bearing mechanism 11, and continue to move to the feeding station 221 to accurately place the placement frame 200 onto the transmission belt 22. When the gripping mechanism 12 is working, it first moves the lifting seat 122 so that the lifting plate 123 is positioned on the bearing mechanism 11. Above mechanism 11, after the lifting plate 123 is vertically raised and lowered to a suitable position, the gripper 124 directly grabs the topmost placement frame 200. Then, the height of the lifting plate 123 is adjusted so that it is higher than the conveyor belt. Then, the lifting seat 122 is moved so that the lifting plate 123 moves to the position above the transmission belt 22 corresponding to the feeding station 221. The gripper 124 releases the placement frame 200 so that the placement frame 200 falls on the transmission belt 22. The automated placement process of the placement frame 200 reduces manual operation, reduces labor intensity, and improves work efficiency.

[0058] Specifically, the lifting plate 123 is slidably connected to the lifting seat 122 via a slide rail.

[0059] Specifically, the bottom of the lifting plate 123 is provided with two grippers 124 at intervals. Both grippers 124 are pneumatic grippers 124, and both grippers 124 are used to hold the frame of the placement frame 200.

[0060] In one embodiment, the carrying mechanism 11 includes a carrying vehicle 111 and a fixed frame 112. The fixed frame 112 forms a limiting space with an entrance located on the side of the fixed frame 112 away from the conveying device 2. The carrying vehicle 111 has a carrying plate for carrying the placement frame 200. The carrying vehicle 111 can enter and exit the limiting space from the entrance.

[0061] Understandably, by carrying the stacked placement frames 200 on the support plate on the support vehicle 111, the placement frames 200 can be quickly moved to the position of the fixing frame 112. When all the placement frames 200 on the support vehicle 111 are gripped, they can be quickly removed from the support vehicle 111 and replaced with another support vehicle 111 carrying placement frames 200. Multiple support vehicles 111 can be used alternately, thereby improving the supply efficiency of placement frames 200. Furthermore, the fixing frame 112 can limit the support vehicle 111 in the limiting space, thereby ensuring the stable stacking of placement frames 200, which is convenient for gripper 124 to grasp.

[0062] Specifically, the fixed frame 112 is fixedly installed on the ground, and the fixed frame 112 cooperates with the side of the bearing plate to fix the bearing vehicle 111.

[0063] like Figures 4-7 As shown, in one embodiment, the conveying device 2 includes a support 21 and a transmission belt 22. The support 21 extends along a first horizontal direction, and a rotating shaft 25 is provided at both ends of the support 21 along the first horizontal direction. The rotating shaft 25 extends along a second horizontal direction. A first rotation drive member 26 is also provided on the support 21 and is drivenly connected to one of the rotating shafts 25. The transmission belt 22 is mounted on the support 21 and is drivenly connected to the two rotating shafts 25. The top of the transmission belt 22 is provided with a feeding station 221, a discharging station 222, and a discharging station 223 in sequence along the first horizontal direction. The placement frame 200 is placed on the transmission belt 22 at the feeding station 221. The first rotation drive member 26 can drive the corresponding rotating shaft 25 to rotate, so as to drive the transmission belt 22 to transport the placement frame 200 to the discharging station 222 and the discharging station 223 in sequence.

[0064] Understandably, by setting the transmission belt 22 on the bracket 21, the stability of the transmission belt 22 can be ensured, and the placement frame 200 can be kept stable during transportation. By driving the rotating shaft 25 through the first rotating drive component 26, the transmission belt 22 can be driven to rotate, and the placement frame 200 can be automatically transported from the feeding station 221 to the unloading station 222 and then to the discharge station 223, reducing manual intervention and improving work efficiency.

[0065] It should be noted that the first rotation drive component 26 can be a drive motor in the prior art.

[0066] Furthermore, a second positioning mechanism 24 is provided on the support 21 near the discharge station 223. The placement frame 200, which has moved to the discharge station 223, is positioned at the discharge station 223 by the second positioning mechanism 24. Understandably, by providing the second positioning mechanism 24, the placement frame 200 can be positioned at the discharge station 223, ensuring the accuracy of the placement frame 200's position. This facilitates the palletizing mechanism in accurately clamping the placement frame 200 containing the piston for palletizing, resulting in better reliability.

[0067] As shown in the figure, in one embodiment, the first positioning mechanism 23 and the second positioning mechanism 24 each include two telescopic driving members and two positioning blocks. The two telescopic driving members are respectively disposed on both sides of the bracket 21 along the second horizontal direction, and the output ends of the two telescopic driving members are arranged facing each other. The two positioning blocks are respectively disposed on the output ends of the two telescopic driving members. The two telescopic driving members can respectively drive the two positioning blocks to move towards or away from each other, so as to abut or separate from the two corners of the placement frame 200 respectively.

[0068] Furthermore, the first positioning mechanism 23 includes two first telescopic drive members 231 and two first positioning blocks 232. The two first telescopic drive members 231 are respectively disposed on both sides of the bracket 21 along the second horizontal direction, and the output ends of the two first telescopic drive members 231 are arranged facing each other. The two first positioning blocks 232 are respectively disposed on the output ends of the two first telescopic drive members 231. The two first telescopic drive members 231 can drive the two first positioning blocks 232 to move towards or away from each other, so as to abut or separate from the two corners of the placement frame 200 located at the feeding station 222.

[0069] Understandably, the first positioning mechanism 23 is positioned on the bracket 21 near the unloading station 222 to prevent the placement frame 200 located at the unloading station 222 from moving towards the unloading station 223. In actual use, when the placement frame 200 moves from the feeding station 221 to the unloading station 222, the two first telescopic drive members 231 drive the two first positioning blocks 232 to move towards each other, so that the two first positioning blocks 232 can respectively abut against the two corners of the placement frame 200, thereby positioning the placement frame 200 at the unloading station 222, so that the robotic arm 41 can accurately place the tested piston into the placement frame 200. Furthermore, by telescopically driving the first positioning blocks 232 to move through the first telescopic drive members 231, the placement position and posture of the placement frame 200 can also be adjusted and corrected during the process of the first positioning blocks 232 abutting against the corners of the placement frame 200, thereby improving the accuracy of piston loading.

[0070] Specifically, the two first telescopic drive members 231 are arranged diagonally, so that the two first positioning blocks 232 can respectively abut against the two diagonally opposite corners of the placement frame 200 located at the feeding station 222.

[0071] Furthermore, the second positioning mechanism 24 includes two second telescopic drive members 241 and two second positioning blocks 242. The two second telescopic drive members 241 are respectively disposed on both sides of the bracket 21 along the second horizontal direction, and the output ends of the two second telescopic drive members 241 are arranged facing each other. The two second positioning blocks 242 are respectively disposed on the output ends of the two second telescopic drive members 241. The two second telescopic drive members 241 can drive the two second positioning blocks 242 to move towards or away from each other, so as to abut or separate from the two corners of the placement frame 200 located at the feeding station 222.

[0072] Understandably, the first positioning mechanism 23 and the second positioning mechanism 24 are based on the same principle, and will not be elaborated here. The second positioning mechanism 24 is used to position the placement frame 200 located at the feeding station 222, so that the palletizing mechanism can accurately clamp the placement frame 200 with the piston. Similarly, the second positioning mechanism 24 also has the function of correcting the placement position and posture of the placement frame 200.

[0073] Specifically, the two second telescopic drive members 241 are also arranged diagonally, so that the two second positioning blocks 242 can respectively abut against the two diagonally opposite corners of the placement frame 200 located at the discharge station 223.

[0074] It should be noted that the two telescopic drive components can be telescopic cylinders or hydraulic cylinders as used in existing technologies.

[0075] In one embodiment, notches matching the corner shapes of the placement frame 200 are provided on the opposite sides of the two first positioning blocks 232 and the opposite sides of the two second positioning blocks 242. It is understood that by providing these notches, the placement frame 200 can be accurately positioned and corrected by abutting against the corners of the placement frame 200.

[0076] In one embodiment, the bracket 21 includes a support platform 211 and two support frames 212. The two support frames 212 are respectively connected to the two ends of the support platform 211 along the first horizontal direction. Two rotating shafts 25 are respectively disposed on the two support frames 212. A first rotation drive member 26 is disposed on one of the support frames 212. The top and bottom of the transmission belt 22 abut against the opposite sides of the support platform 211 along the vertical direction. Two first telescopic drive members 231 are both installed on the support platform 211.

[0077] Understandably, the support platform 211, as the main load-bearing component, provides the foundation for the smooth operation of the transmission belt 22, ensuring that the transmission belt 22 does not sway or tilt during the conveying of the placement frame 200. The two support frames 212 are respectively connected to both ends of the support platform 211, further enhancing the rigidity and stability of the overall structure. In addition, the top and bottom of the transmission belt 22 abut against the opposite sides of the support platform 211 along the vertical direction. This design effectively limits the vertical displacement of the transmission belt 22, preventing it from shifting or loosening during operation. This ensures that when the placement frame 200 is placed on the transmission belt 22, it will not bend the transmission belt 22 downwards. The pressure of the placement frame 200 on the transmission belt 22 is directly distributed to the support platform 211, ensuring the smoothness of the conveying and improving transmission efficiency and reliability.

[0078] In one embodiment, each support frame 212 includes a horizontal bar 2121 and two vertical bars 2122. The two ends of the horizontal bar 2121 along the second horizontal direction are respectively connected to the top of the two vertical bars 2122. The two ends of each rotating shaft 25 are respectively connected to the corresponding two vertical bars 2122 through a hinge seat. The first rotation drive member 26 is disposed on the corresponding vertical bar 2122.

[0079] Understandably, the frame structure composed of the horizontal bar 2121 and the vertical bar 2122 provides solid mechanical support for the entire support frame 212, ensuring its stability and durability when bearing weight and external forces. Each pivot 25 is connected to its corresponding two vertical bars 2122 via a hinged joint at both ends, thus ensuring the connection stability of the pivot 25 and enabling its stable rotation.

[0080] Furthermore, the support platform 211 includes two connecting rods 2111 and multiple fixing rods 2112. The two connecting rods 2111 are spaced apart along the second horizontal direction, and the multiple fixing rods 2112 are spaced apart and located between the two connecting rods 2111. The two ends of each connecting rod 2111 along the first horizontal direction are respectively connected to the two corresponding vertical rods 2122, and the two ends of each fixing rod 2112 along the first horizontal direction are respectively connected to the two corresponding horizontal rods 2121. Two first telescopic drive members 231 are respectively installed on the two connecting rods 2111.

[0081] Understandably, by connecting the connecting rod 2111 to the vertical rod 2122 and the fixing rod 2112 to the horizontal rod 2121, the pressure can be effectively distributed evenly on the support frame 212, reducing local stress concentration and enhancing the overall structural strength. Furthermore, the structure with two connecting rods 2111 and multiple fixing rods 2112 spaced apart saves on the material requirements of the support platform 211, reducing the production cost and subsequent maintenance cost of the support platform 211.

[0082] Furthermore, multiple transmission belts 22 are provided, and the multiple transmission belts 22 are spaced apart along the second horizontal direction. The number of transmission belts 22 is the same as that of the fixed rods 2112 and they are arranged in a one-to-one correspondence. The top and bottom of each transmission belt 22 respectively abut against the corresponding fixed rods 2112 on opposite sides along the vertical direction.

[0083] Understandably, the one-to-one correspondence between the transmission belt 22 and the fixed rod 2112 can effectively ensure the stability of each transmission belt 22, effectively bear the pressure of the placement frame 200 placed on the transmission belt 22, ensure the stable operation of the transmission belt 22, enhance the stability during transportation, and facilitate subsequent maintenance.

[0084] Specifically, each rotating belt is connected to two rotating shafts 25 for transmission, and each transmission belt 22 runs synchronously.

[0085] Furthermore, the height of both connecting rods 2111 is higher than the height of each fixed rod 2112. Understandably, the placement frame 200 is primarily supported by the transmission belt 22 located on the fixed rods 2112. The higher height of the two connecting rods 2111 compared to the fixed rods 2112 effectively blocks the placement frame 200 on both sides along the second horizontal direction, thus preventing the placement frame 200 from falling off the support platform 211 and improving reliability.

[0086] In one embodiment, multiple transmission belts 22 are evenly spaced, and multiple transmission wheels 251 are fitted onto each rotating shaft 25. The number of transmission wheels 251 is the same as the number of transmission belts 22, and they are arranged in a one-to-one correspondence. Each transmission belt 22 is connected to two corresponding rotating wheels. Understandably, the even spacing between the multiple transmission belts 22 ensures that the load on the placement frame 200 is evenly distributed during the conveying process; the one-to-one correspondence between the transmission wheels 251 and the transmission belts 22 ensures that each transmission belt 22 can accurately engage with its corresponding transmission wheel 251, avoiding belt misalignment or slippage and improving the accuracy and stability of the transmission.

[0087] In one embodiment, a plurality of baffles 213 are provided at the top of the crossbar 2121 near the discharge station 223. The plurality of baffles 213 are spaced apart along the second horizontal direction and protrude from the top surface of the transmission belt 22.

[0088] Understandably, by providing multiple baffles 213 at the top of the crossbar 2121 near the discharge station 223, and with the baffles 213 protruding from the top surface of the transmission belt 22, the baffles 213 can block the placement frame 200 from falling directly out when it moves on the transmission belt 22 to the discharge station 223.

[0089] It should be noted that in actual use, the placement frame 200, which moves to the discharge station 223, is first blocked by the stop bar 213 to prevent it from falling out, and then the second positioning mechanism 24 positions the placement frame 200 and corrects its position.

[0090] In one embodiment, the conveying device 2 further includes two rotary pressing cylinders, which are disposed between any two adjacent fixed rods 2112. Each rotary pressing cylinder has a blocking block connected to its output end. One rotary pressing cylinder is disposed on the side of the feeding station 221 near the discharging station 222, and the other rotary pressing cylinder is disposed on the side of the discharging station 222 near the discharge station 223. The two rotary pressing cylinders can respectively drive the two blocking blocks to protrude from the top surface of the transmission belt 22.

[0091] Understandably, one of the rotary pressing cylinders is located on the side of the feeding station 221 near the discharging station 222. When it drives the corresponding blocking block to protrude from the top surface of the transmission belt 22, it can prevent the placement frame 200 located at the feeding station 221 from moving towards the discharging station 222. The other rotary pressing cylinder is located on the side of the discharging station 222 near the discharging station 223. When it drives the corresponding blocking block to protrude from the top surface of the transmission belt 22, it can prevent the placement frame 200 located at the discharging station 222 from moving towards the discharging station 223. It should be noted that the rotary pressing cylinder can be a conventional rotary pressing cylinder. After rotation, the output end of the rotary pressing cylinder can drive the blocking block to be higher than the top surface of the transmission belt 22, and after resetting, it can drive the blocking block to be lower than the top surface of the transmission belt 22.

[0092] Furthermore, for ease of explanation, the rotary pressing cylinder located on the side of the feeding station 221 near the discharging station 222 is the first rotary pressing cylinder, and the output end of the first rotary pressing cylinder is connected to the first blocking block 214; the rotary pressing cylinder located on the side of the discharging station 222 near the discharging station 223 is the second rotary pressing cylinder, and the output end of the second rotary pressing cylinder is connected to the second blocking block 215.

[0093] In actual use, when the unloading station 222 does not have a placement frame 200, the first rotary pressing cylinder prevents the first blocking block 214 from protruding from the top surface of the transmission belt 22. The placement frame 200 placed by the clamping mechanism 12 at the feeding station 221 can move normally to the unloading station 222 under the drive of the transmission belt 22. At this time, the second rotary pressing cylinder makes the second blocking block 215 protrude from the top surface of the transmission belt 22 to prevent the placement frame 200 from moving directly to the unloading station 223 after moving to the unloading station 222. When the second blocking block 215 successfully blocks the placement frame 200 at the unloading station 222, the first positioning mechanism 23 positions and corrects the position of the placement frame 200 to proceed with the subsequent piston loading process. Meanwhile, at the unloading station 222... When there is a placement frame 200, another placement frame 200 is placed into the feeding station 221 by the clamping mechanism 12. At this time, the first rotating pressing cylinder causes the first blocking block 214 to protrude from the top surface of the transmission belt 22, thereby preventing the placement frame 200 from moving toward the unloading station 222. At this time, there are placement frames 200 on both the feeding station 221 and the unloading station 222 on the transmission belt 22. When the piston is filled in the placement frame 200 located in the unloading station 222, the two blocking blocks no longer block the corresponding placement frame 200, and the first positioning structure no longer positions the placement frame 200. At this time, both placement frames 200 can move with the transmission belt 22. When the placement frame 200 in the unloading station 222 moves out, the second blocking block 215 rises to continue blocking the placement frame 200 that is about to reach the unloading station 222. It can be seen that by cooperating with the two rotary pressing cylinders, empty placement frames 200 can be continuously conveyed to the feeding station 222, thereby improving the piston loading efficiency.

[0094] In one embodiment, the conveying device 2 further includes a first proximity sensor 27, which is disposed on the connecting rod 2111 near the unloading station 222. Both rotating pressing cylinders are electrically connected to the first proximity sensor 27.

[0095] Understandably, by setting the first proximity sensor 27, when the first proximity sensor 27 senses that the placement frame 200 is close to the unloading station 222, it controls the two rotary pressing cylinders to move, thereby driving the two blocking blocks to protrude from the top surface of the transmission belt 22 to block the placement frame 200.

[0096] Furthermore, a second proximity sensor 28 is also provided on the support platform 211. The second proximity sensor 28 is located near the unloading station 222. Specifically, the second proximity sensor 28 is located on one of the connecting rods 2111. The second proximity sensor 28 is electrically connected to two first telescopic drive members 231. When the second proximity sensor 28 senses that a placement frame 200 is located at the unloading station 222, it controls the two first telescopic drive members 231 to drive the corresponding two first positioning blocks 232 to move towards each other to position the placement frame 200.

[0097] It should be noted that the first proximity sensor 27 is electrically connected to two rotary pressing cylinders via a PLC controller, and the second proximity sensor 28 is also electrically connected to two first telescopic drive components 231 via a PLC controller.

[0098] Please see Figures 8-10 In one embodiment, the stacking mechanism 51 includes a support base 511 and a slide 512 movably disposed on the support base 511. A lifting mechanism 513 is disposed on the slide 512. The lifting mechanism 513 is located on one side of the support base 511 along a first horizontal direction, and a gripper 515 is disposed at the bottom of the lifting mechanism 513. The lifting mechanism 513 can drive the gripper 515 to rise and fall. The support base 511 has a stacking station and a material grabbing station on the side where the gripper 515 is located. The stacking station and the material grabbing station are spaced apart along a second horizontal direction, which is perpendicular to the first horizontal direction. The slide 512 can move along the second horizontal direction so that the lifting mechanism 513 can drive the gripper 515 to move between the stacking station and the material grabbing station. A receiving mechanism 52 is disposed corresponding to the stacking station. The gripper 515 is used to grab the placement frame 200 at the material grabbing station and stack the placement frame 200 on the receiving mechanism 52.

[0099] Understandably, the position of the gripper 515 can be quickly adjusted through the slide 512 and the lifting mechanism 513, ensuring that the gripper 515 moves accurately and grabs the support frame 212, and then transfers the support frame 212 to the receiving mechanism 52, ensuring that the placement position and method of each placement frame 200 are consistent, thus reducing the intensity of manual labor and improving the placement efficiency of the placement frames 200.

[0100] In actual use, the gripper 515 is moved horizontally by adjusting the slide block 512. When it reaches the stacking station or the material grabbing station, the height of the gripper 515 is adjusted by the lifting mechanism 513, so as to facilitate the stacking or grabbing of the placement box 200.

[0101] It should be noted that the material grabbing station is set to the discharge station 223 of the conveying mechanism. When the gripper 515 is in the material grabbing station, the lifting mechanism 513 controls the gripper 515 to rise and fall vertically to reach the discharge station 223 to grab the placement frame 200 equipped with the piston.

[0102] In one embodiment, the palletizing device 5 further includes an auxiliary positioning mechanism 53, which includes a mounting frame 531 and a movable seat 532. The mounting frame 531 is disposed on the side of the receiving mechanism 52 away from the support base 511. The movable seat 532 is movably disposed on the side of the mounting frame 531 facing the receiving mechanism 52, and the movable seat 532 can move vertically relative to the mounting frame 531. Two limiting blocks 5325 are provided on the side of the movable seat 532 facing the receiving mechanism 52. The two limiting blocks 5325 are respectively used to abut against the opposite sides of the placement frame 200 placed on the receiving mechanism 52 to position the placement frame 200.

[0103] Understandably, the mounting frame 531 of the auxiliary positioning mechanism 53 is fixed to the ground to maintain good stability. By moving the movable seat 532 vertically on the mounting frame 531, the two limiting blocks 5325 can be used to cooperate with the placement frames 200 of different heights. According to the different stacking heights of the placement frames 200, the position of the movable seat 532 is adjusted so that the two limiting blocks 5325 cooperate with the topmost placement frame 200, thereby keeping the stacked placement frames 200 balanced and preventing shaking, so that the gripper 515 can continue to stack the placement frames 200, resulting in better reliability.

[0104] Furthermore, the mounting frame 531 forms an installation space 5311 with an opening, and the opening is located on the side of the mounting frame 531 facing the receiving mechanism 52. Two rotating rods 5312 extending in the second horizontal direction are rotatably connected within the installation space 5311, and the two rotating rods 5312 are arranged vertically at intervals. Two sprockets 5313 are respectively sleeved at corresponding positions on the two rotating rods 5312. The two sprockets 5313 are connected by a transmission chain 5314. The mounting frame 531 is provided with a second rotation drive member that is connected to one of the rotating rods 5312. The movable seat 532 is connected to the transmission chain 5314. The second rotation drive member can drive the corresponding rotating rod 5312 to rotate, thereby driving the sprocket 5313 to rotate, so as to drive the movable seat 532 to move vertically through the transmission chain 5314.

[0105] Understandably, the combination of sprocket 5313 and drive chain 5314 provides a stable transmission method, ensuring the smoothness and accuracy of the moving seat 532 during vertical movement. The design of drive chain 5314 can effectively transmit power and prevent the moving seat 532 from sliding or slipping relative to drive chain 5314.

[0106] It should be noted that the second rotation drive component can be a drive motor as used in the prior art.

[0107] In one embodiment, the movable seat 532 includes a horizontal plate 5321 and a vertical plate 5322 connected to each other. The horizontal plate 5321 is located on the side of the vertical plate 5322 near the opening, and the vertical plate 5322 is connected to the transmission chain 5314. A guide rod 5315 extending vertically is also provided in the installation space 5311, and the guide rod 5315 is located on the side of the rotating rod 5312 near the opening. A through hole is provided on the horizontal plate 5321 for the guide rod 5315 to pass through.

[0108] Understandably, the guide rod 5315 passes through the through hole on the horizontal plate 5321, providing a stable vertical guide for the moving seat 532, ensuring that it will not deviate or shake during its up and down movement, and improving the running accuracy and stability of the moving seat 532.

[0109] In one embodiment, two extension plates 5323 extending in a first horizontal direction are provided at both ends of the movable seat 532 and on the side facing the receiving mechanism 52. The ends of the two extension plates 5323 away from the movable seat 532 extend out of the installation space 5311. The length of one extension plate 5323 in the first horizontal direction is greater than the length of the other extension plate 5323 in the first horizontal direction. The ends of the two extension plates 5323 away from the movable seat 532 are provided with third telescopic drive members 5324. The output ends of the two third telescopic drive members 5324 are arranged facing each other. Two limit blocks 5325 are respectively arranged at the output ends of the two third telescopic drive members 5324. The two third telescopic drive members 5324 can drive the two limit blocks 5325 to move towards or away from each other, so as to abut or separate from the two corners of the placement frame 200 located on the receiving mechanism 52.

[0110] Understandably, the extension plate 5323 extends out of the installation space 5311, and a third telescopic drive member 5324 is installed on the extension plate 5323. The third telescopic drive member 5324 telescopically drives the limit block 5325 to move, thereby abutting against the corner of the placement frame 200 to prevent the stacked placement frames 200 from shaking, and further improve the accuracy of stacking.

[0111] It should be noted that the third telescopic drive component 5324 can be a telescopic cylinder or hydraulic cylinder in the prior art.

[0112] Specifically, each of the two limiting blocks 5325 has a notch on one side facing each other that matches the shape of the corner of the placement frame 200.

[0113] In one embodiment, the receiving mechanism 52 includes a receiving cart 521 and a positioning frame 522. The positioning frame 522 forms a positioning space with an entrance. The entrance is located on the side of the positioning frame 522 away from the material grabbing station. The receiving cart 521 has a receiving plate for stacking the placement frame 200. The receiving cart 521 can enter and exit the positioning space from the entrance.

[0114] It should be noted that the receiving cart 521 is the same as the carrying cart 111 mentioned above and can be used interchangeably; the positioning frame 522 has the same structure and function as the fixing frame 112 mentioned above, and will not be described in detail here.

[0115] Furthermore, a third rotary pressing cylinder 5221 is provided on the positioning frame 522 near the opening. A stop block 5222 is connected to the third rotary pressing cylinder 5221. The third rotary pressing cylinder 5221 can make the stop block 5222 be located at the opening so as to abut against the side of the receiving plate in the positioning space facing the opening.

[0116] Understandably, after the output end of the third rotary pressing cylinder 5221 rotates, it can drive the stop block 5222 to block the opening position, thereby preventing the receiving cart 521 in the positioning space from sliding out of the positioning space, so as to ensure that the placement frame 200 can be stacked on the receiving cart 521, which has better reliability. When it is necessary to remove the receiving cart 521, the output end of the third rotary pressing cylinder 5221 resets, thereby driving the stop block 5222 to leave the opening position.

[0117] Similarly, the same third rotary pressing cylinder 5221 and stop block 5222 are also provided on the fixed frame 112 to prevent the carrier vehicle 111 in the limiting space from sliding out of the limiting space, which is more reliable.

[0118] In one embodiment, a mounting plate 514 is provided at the bottom of the lifting mechanism 513, and two grippers 515 are installed at intervals at the bottom of the mounting plate 514. By providing two grippers 515, both grippers 515 can grasp the edge of the placement frame 200, thereby smoothly transferring the placement frame 200 and preventing the piston inside the placement frame 200 from falling out.

[0119] In one embodiment, the support base 511 includes a support column and a support plate 5111 disposed on the top of the support column. A slide 512 is slidably connected to the support plate 5111, and the height of the support plate 5111 is higher than the height of the mounting frame 531. Understandably, the higher height of the support plate 5111 ensures that the gripper 515 does not interfere with the two limit blocks 5325 each time it moves to the stacking station, and ensures that more placement frames 200 can be stacked on the receiving cart 521, reducing the number of times the receiving cart 521 needs to be changed, thus improving stacking efficiency and reducing manual labor intensity.

[0120] The above are merely exemplary embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A conveying device for conveying placement frames, characterized in that, The conveying device includes: The bracket extends along a first horizontal direction, and each end of the bracket along the first horizontal direction is provided with a rotating shaft. The rotating shaft extends along a second horizontal direction, which is perpendicular to the first horizontal direction. The bracket is also provided with a first rotation drive component that is pulsatorically connected to one of the rotating shafts. A transmission belt is mounted on the bracket and is connected to two rotating shafts. The top of the transmission belt is provided with a feeding station, a discharging station, and a discharging station in sequence along the first horizontal direction. The placement frame is placed on the transmission belt at the feeding station. The first rotation drive can drive the corresponding rotating shaft to rotate, so as to drive the transmission belt to transport the placement frame to the discharging station and the discharging station in sequence. The first positioning mechanism includes two first telescopic drive members and two first positioning blocks. The two first telescopic drive members are respectively disposed on both sides of the bracket along the second horizontal direction, and the output ends of the two first telescopic drive members face each other. The two first positioning blocks are respectively disposed on the output ends of the two first telescopic drive members. The two first telescopic drive members can respectively drive the two first positioning blocks to move towards or away from each other, so as to abut or separate from the two corners of the placement frame located at the feeding station.

2. The conveying device as described in claim 1, characterized in that, The bracket includes a support platform and two support frames. The two support frames are respectively connected to the two ends of the support platform along the first horizontal direction. The two rotating shafts are respectively disposed on the two support frames. The first rotation drive component is disposed on one of the support frames. The top and bottom of the transmission belt abut against opposite sides of the support platform along the vertical direction, and both of the first telescopic drive members are mounted on the support platform.

3. The conveying device as described in claim 2, characterized in that, Each of the support frames includes a horizontal bar and two vertical bars. The two ends of the horizontal bar along the second horizontal direction are respectively connected to the top of the two vertical bars. The two ends of each rotating shaft are respectively connected to the two corresponding vertical bars through a hinge seat. The first rotation drive member is disposed on the corresponding vertical bar. The support platform includes two connecting rods and multiple fixing rods. The two connecting rods are spaced apart along the second horizontal direction, and the multiple fixing rods are spaced apart and located between the two connecting rods. The two ends of each connecting rod along the first horizontal direction are respectively connected to the two corresponding vertical rods, and the two ends of each fixing rod along the first horizontal direction are respectively connected to the two corresponding horizontal rods. The two first telescopic drive members are respectively installed on the two connecting rods. The transmission belts are provided in multiple ways, and the multiple transmission belts are spaced apart along the second horizontal direction. The number of transmission belts is the same as the number of fixed rods and they are arranged in a one-to-one correspondence. The top and bottom of each transmission belt abut against the corresponding fixed rod on opposite sides along the vertical direction.

4. The conveying device as described in claim 3, characterized in that, The height of both connecting rods is higher than the height of each of the fixed rods.

5. The conveying device as described in claim 3, characterized in that, Multiple stop bars are also provided at the top of the crossbar near the discharge station. The multiple stop bars are spaced apart along the second horizontal direction, and the multiple stop bars protrude from the top surface of the transmission belt.

6. The conveying device as described in claim 3, characterized in that, The conveying device also includes two rotary pressing cylinders, which are disposed between any two adjacent fixed rods, and the output end of each rotary pressing cylinder is connected to a blocking block. One of the rotary pressing cylinders is located on the side of the feeding station near the discharging station, and the other rotary pressing cylinder is located on the side of the discharging station near the discharge station. The two rotary pressing cylinders can respectively drive the two blocking blocks to protrude from the top surface of the transmission belt.

7. The conveying device as described in claim 6, characterized in that, The conveying device also includes a first proximity sensor, which is located on the connecting rod near the material feeding station. Both of the rotary pressing cylinders are electrically connected to the first proximity sensor.

8. The conveying device according to any one of claims 1 to 6, characterized in that, The conveying device further includes a second positioning mechanism, which includes two second telescopic drive members and two second positioning blocks. The two second telescopic drive members are respectively disposed on both sides of the bracket along the second horizontal direction, and the output ends of the two second telescopic drive members face each other. The two second positioning blocks are respectively disposed on the output ends of the two second telescopic drive members. The two second telescopic drive members can respectively drive the two second positioning blocks to move towards or away from each other, so as to abut or separate from the two corners of the placement frame located at the feeding station.

9. The conveying device as described in claim 8, characterized in that, Each of the two first positioning blocks and the two second positioning blocks has a notch on one side opposite to the other, which matches the shape of the corner of the placement frame.

10. A framing and stacking device for placing pistons in placement frames and stacking the placement frames containing the pistons, characterized in that, The framing and palletizing equipment includes: A feeding device, comprising a carrying mechanism and a clamping mechanism, wherein the carrying mechanism is used to stack and place the placement frame; The conveying device as described in any one of claims 1 to 9, wherein the clamping mechanism is used to clamp the placement frame on the bearing mechanism and place it at the feeding station, the transmission belt can drive the placement frame to move sequentially to the unloading station along the first horizontal direction, and the first positioning mechanism can position the placement frame at the unloading station; A detection device is disposed on one side of the bracket along the first horizontal direction, and the detection device is used to detect the piston; A material conveying device is used to transfer the tested piston to the placement frame positioned at the discharge station; the transmission belt can also drive the placement frame containing the piston to move to the discharge station. A palletizing device, comprising a receiving mechanism and a stacking mechanism; the stacking mechanism is used to place the placement frame located at the discharge station onto the receiving mechanism.

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