A dual rotary table conveyor

Abstract

A double rotary table conveying device, comprising a rotary table one and a rotary table two, the rotary table one comprising a rotary frame one and a chain machine one with a conveying chain one, the rotary table two comprising a rotary frame two and a chain machine two with a conveying chain two, the conveying chain one and the conveying chain two both having a straight section, and further comprising a stretch fork transition mechanism; the stretch fork transition mechanism comprising a transition piece and a stretch fork structure, the transition piece being installed on the stretch fork structure, the stretch fork structure being arranged on the rotary frame one and being capable of driving the transition piece to stretch out relative to the rotary table one; after the transition piece stretches out, the projection of the transition piece on a vertical plane parallel to the conveying direction of the conveying chain one and the projection of the straight section of the conveying chain two on the vertical plane both exist in coincidence. The double rotary table conveying device can better realize the transition conveying of the tray between the two rotary tables.

Description

Technical Field

[0001] This invention relates to a dual rotary table conveyor device, belonging to the field of logistics conveying. Background Technology

[0002] With the rapid development of modern technology and industry, logistics conveying equipment has also developed rapidly and is being used in more and more occasions. Among them, electric rotary tables for pallet transfer are also a type of logistics conveying equipment.

[0003] Currently, there are dual-rotor conveyor systems with two electric rotary tables cooperating with transfer pallets. A chain conveyor on one rotary table transfers the pallet to a chain conveyor on the other rotary table, where the chain conveyor then delivers the pallet. Regardless of which rotary table is used, the conveyor chain of the chain conveyor structurally includes an arc segment at the end that wraps around a sprocket, and a straight segment connecting the arc segment.

[0004] Because there is a certain gap between the two rotary tables, in order to reduce the impact of this gap on pallet conveying, a common method is to fix a transition rail between the chain conveyors of the two rotary tables. (See Appendix for details.) Figure 7 As shown. However, there is still a gap between the transition rail and the straight section at the end of the conveyor chain, with a width at least equal to the radius of the arc section. In other words, the transition rail and the straight section do not have overlapping conveying sections in the conveying direction, and the transition rail and the straight section cannot be continuously conveyed in the conveying direction. This results in the transition rail not being able to achieve a good or smooth transition conveying when the pallet is conveyed from one chain machine on a rotary table to another chain machine on a rotary table, and there is a risk that the pallet may get stuck in the gap.

[0005] Therefore, further improvements are needed. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a dual rotary table conveying device that can better facilitate the transition and conveying of pallets between two rotary tables.

[0007] A dual rotary table conveying device includes a rotary table 1 and a rotary table 2. Rotary table 1 includes a rotating frame 1 and a chain machine 1 with a conveyor chain 1. Rotary table 2 includes a rotating frame 2 and a chain machine 2 with a conveyor chain 2. Both conveyor chain 1 and conveyor chain 2 have straight sections and also include an extension fork transition mechanism.

[0008] The fork extension mechanism includes a transition member and a fork extension structure. The transition member is mounted on the fork extension structure, and the fork extension structure is set on a rotating frame and can drive the transition member to extend relative to the rotating platform. After the transition member extends, its projection on a vertical plane parallel to the conveying direction of the first conveyor chain coincides with the projection of the straight section of the first conveyor chain and the straight section of the second conveyor chain.

[0009] Preferably, the extension fork structure includes a slide rail fixed to a rotating frame, an extension fork frame slidably mounted on the slide rail for mounting the transition member, and a power mechanism for controlling the movement of the extension fork frame.

[0010] Preferably, the power mechanism includes a rack fixedly mounted on the extension fork, a gear cooperating with the rack, and a motor mounted on the rotating frame for driving the gear to rotate.

[0011] Preferably, the rotating frame is equipped with a detector for detecting the movement distance of the transition piece.

[0012] Preferably, the power mechanism is one of a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

[0013] Preferably, the rotating frame 2 is provided with a support plate for supporting the fork frame.

[0014] Preferably, the rotating frame two is also provided with a limiting block located in the extension direction of the transition piece, and the distance between the limiting block and the corresponding straight section on the conveyor chain one is less than the length of the transition piece.

[0015] Preferably, there are multiple transition components symmetrically distributed on the extension fork structure.

[0016] In summary, the present invention has the following beneficial effects:

[0017] 1. In this invention, an extension fork transition mechanism is provided, and after the transition member extends, the projections of the transition member, the straight section of conveyor chain one, and the straight section of conveyor chain two on a vertical plane parallel to the conveying direction of conveyor chain one coincide, which can better realize the transition conveying of the pallet between the two rotary tables.

[0018] 2: In this invention, a support plate is provided on the rotating table, so that the fork extension mechanism can bear a large weight without deforming, thus ensuring the smooth transport of pallets and goods. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the dual rotary table conveyor device from a first-view perspective.

[0020] Figure 2 This is a schematic diagram of the dual rotary table conveyor device from a second perspective.

[0021] Figure 3 This is a schematic diagram of the structure of rotary table one;

[0022] Figure 4 This is a schematic diagram of the extension fork transition mechanism;

[0023] Figure 5This diagram shows the positional relationship between the extended transition piece and conveyor chains one and two.

[0024] Figure 6 This is a schematic diagram of the structure of rotary table two;

[0025] Figure 7 This is a diagram showing the positional relationship between the transition component and the conveyor chain in the background technology. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1: As Figure 1-5 As shown,

[0028] A dual rotary table conveying device includes a rotary table 1 and a rotary table 2. Both rotary tables 1 and 2 adopt existing structures. Specifically, rotary table 1 includes a rotary frame 11 and a chain conveyor 12 with a conveying chain 1. The chain conveyor 12 is fixedly connected to the rotary frame 11 and can rotate with the rotary frame 11. Multiple chain conveyors 12 are used and are parallel to each other. Similarly, rotary table 2 includes a rotary frame 21 and a chain conveyor 22 with a conveying chain 2. The chain conveyor 22 is fixedly connected to the rotary frame 21 and can rotate with the rotary frame 21. The number of chain conveyors 22 is the same as the number of chain conveyors 12. Both the conveying chain 1 and the conveying chain 2 have a straight section and an arc section connected to the straight section and cooperating with the sprocket.

[0029] Unlike existing technologies, this embodiment also includes an extension fork transition mechanism 3.

[0030] The fork extension mechanism 3 includes a transition member 31 and a fork extension structure 32. The transition member 31 is mounted on the fork extension structure 32. There are multiple transition members 31, symmetrically distributed on the fork extension structure 32. The transition member 31 is arranged parallel to the first conveyor chain, and the upper surface of the transition member 31 is flush with the upper surface of the first conveyor chain. The fork extension structure 32 is set on the rotating frame 11 and can drive the transition member 31 to move. The driving direction of the fork extension structure 32 is parallel to the conveying direction of the chain machine 12, so that the transition member 31 can extend relative to the rotating table 1 in a direction parallel to the conveying direction of the first conveyor chain. The transition member 31 is a plate or a guide rail. The length of the transition member 31 is greater than the distance between the corresponding straight section on the first conveyor chain and the corresponding straight section on the second conveyor chain.

[0031] When pallets and goods need to be transported from rotary table 1 to rotary table 2, firstly, the first conveyor chain on rotary table 1 aligns with the second conveyor chain on rotary table 2. Then, the extension fork structure 32 operates and controls the extension amount of the transition piece 31, so that one end of the transition piece 31 reaches the straight section of the second conveyor chain, while the other end remains at the straight section of the first conveyor chain. In this way, after the transition piece 31 extends, its projection on the vertical plane parallel to the conveying direction of the first conveyor chain, the straight section of the first conveyor chain, and the straight section of the second conveyor chain partially overlaps. That is, the three form an overlapping conveying section with overlapping projections, enabling continuous conveying of the straight section of the first conveyor chain, the transition piece 31, and the straight section of the second conveyor chain in the conveying direction. This allows pallets and goods to be smoothly transferred, ensuring the smooth operation of the entire rotary table conveying device. After the transition conveying is completed, the extension fork structure 32 is activated, causing the transition piece 31 to return to its original position. In this way, no interference will occur when either the first rotary table 1 or the second rotary table 2 is performing rotation operations, ensuring the normal conveying of the bracket and the goods.

[0032] Specifically, the extension fork structure 32 includes a slide rail 321, an extension fork frame 322, and a power mechanism. There are two slide rails 321, which are parallel to each other. The slide rails 321 are fixedly connected to the rotating frame 11 via multiple linearly arranged connecting beams 321-1. The extension fork frame 322 is slidably mounted on the two slide rails 321 via two sliders 322-1. A transition piece 31 is fixedly mounted on the extension fork frame 322. The movement of the extension fork frame 322 enables the movement of the transition piece 31. The power mechanism provides power for the movement of the extension fork frame 322. The power mechanism can be a common pneumatic cylinder, hydraulic cylinder, or electric cylinder. In this embodiment, the power mechanism includes a rack 323 fixedly mounted on the extension fork frame 322, a gear 324 cooperating with the rack 323, and a mechanism located on the rotating frame 11. A motor 325 is used to drive the gear 324 to rotate. The gear 324 is mounted on the output shaft of the motor 325. The motor 325 can be a control motor such as a servo motor. In this embodiment, to control costs, the motor 325 is a common motor. At the same time, a detector 4 is provided on the rotating frame 11 to detect the movement distance of the transition piece 31. The detector 4 can be a photoelectric sensor. The photoelectric sensor is connected to the host computer. The host computer controls the start and stop of the motor 325 according to the measurement of the photoelectric sensor. In the start state, the transition piece 31 is not extended. The infrared light emitted by the photoelectric sensor is blocked by the transition piece 31. When the motor 325 starts and the transition piece 31 extends, once the infrared light emitted by the photoelectric sensor passes through the transition piece 31, the host computer controls the motor 325 to be powered off and stopped.

[0033] The rotating frame 21 is also provided with a limiting block 24 located in the extension direction of the transition piece 31 to prevent the transition piece 31 from slipping off the slide rail 321 when the detector 4 fails and the power mechanism fails.

[0034] The distance between the limit stop 24 and the corresponding straight section on the conveyor chain is less than the length of the transition piece 31. This ensures that even if the detector 4 fails, causing the power mechanism to fail, the transition piece 31 can still function as a transition conveyor. Of course, to prevent motor burnout, a pressure sensor is preferably installed on the limit stop 24. The pressure sensor is not shown in the attached diagram. It is connected to a host computer. When the pressure sensor detects pressure, the host computer controls the motor to forcibly stop it.

[0035] like Figure 6 As shown, preferably, the rotating frame 21 is provided with a support plate 23 for supporting the fork extension frame 322, so that the fork extension transition mechanism 3 can withstand a large weight without deformation, and the pallet and goods can be transported smoothly.

[0036] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. All technical contents for which protection is sought in this invention have been fully described in the claims.

Claims

1. A double rotary table conveying device, comprising a rotary table one (1) and a rotary table two (2), the rotary table one (1) comprising a rotary frame one (11) and a chain machine one (12) with a conveying chain one, the rotary table two (2) comprising a rotary frame two (21) and a chain machine two (22) with a conveying chain two, the conveying chain one and the conveying chain two both having a straight section, characterized in that, Also include the stretch fork transition mechanism (3); The stretch fork transition mechanism (3) comprises a transition piece (31) and a stretch fork structure (32), the transition piece (31) is installed on the stretch fork structure (32), the stretch fork structure (32) is arranged on the rotating frame one (11) and can drive the transition piece (31) to make the transition piece (31) relative to the rotating table one (1) stretch out; after the transition piece (31) stretches out, the projection of the transition piece (31) and the flat section of the conveying chain one and the flat section of the conveying chain two on the vertical plane parallel to the conveying direction of the conveying chain one all exist coincidence.

2. A dual rotary table conveyor as claimed in claim 1, wherein, The stretch fork structure (32) comprises a slide rail (321) fixed on the rotating frame one (11), a stretch fork frame (322) slidably installed on the slide rail (321) and used for installing the transition piece (31), and a power mechanism for controlling the movement of the stretch fork frame (322).

3. A dual rotary table conveyor as claimed in claim 2, wherein, The power mechanism comprises a rack (323) fixedly arranged on the stretch fork frame (322), a gear (324) matched with the rack (323), and a motor (325) arranged on the rotating frame one (11) and used for driving the gear (324) to rotate.

4. A dual rotary table conveyor as claimed in claim 3, wherein, The rotating frame one (11) is provided with a detector (4) for detecting the movement distance of the transition piece (31).

5. The dual rotary table conveyor of claim 2, wherein, The power mechanism is one of a gas cylinder, an oil cylinder and an electric cylinder.

6. The dual rotary table conveyor of claim 2, wherein, The rotating frame two (21) is provided with a supporting plate (23) for supporting the stretch fork frame (322).

7. The dual rotary table conveyor of claim 1, wherein, The rotating frame two (21) is further provided with a limiting block (24) located in the stretching direction of the transition piece (31).

8. A dual rotary table conveyor as claimed in claim 7, wherein, The distance between the limiting block (24) and the corresponding flat section on the conveying chain one is less than the length of the transition piece (31).

9. The dual rotary table conveyor of claim 1, wherein, The number of the transition pieces (31) is multiple, and the multiple transition pieces (31) are symmetrically distributed on the stretch fork structure (32).

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