A special clamping and placing device for silkworm trays

Abstract

The present invention belongs to the technical field of handling equipment structures, and in particular relates to a clamping and placing device specifically for silkworm trays. The present invention provides a clamping and placing device specifically for silkworm trays. By arranging an upper cylinder, a mounting frame, a limit rod unit, a clamping plate unit, a drive screw unit, and a pull-type suction cup unit on a mounting plate, the clamping and placing device can more simply, safely, and quickly clamp the silkworm trays, lift and lower them, and then release them.

Description

Technical Field

[0001] The invention belongs to the technical field of transport equipment structures, and in particular relates to a special clamping and placing device for silkworm trays. Background Art

[0002] In modern sericulture, the two most commonly used silkworm tools are the silkworm frame and the silkworm tray. The former primarily consists of a rectangular frame with internal supports. The frame houses the silkworm tray and collects the silkworm feces, while the supports properly support the silkworm tray to ensure: 1. The feces are separated from the silkworm tray; 2. As the silkworms expand, there is sufficient living space between the two silkworm trays (larger at the top and smaller at the bottom).

[0003] The latter silkworm tray has two main structural styles. One is to fix the silkworm net in a rectangular frame, and the other is to punch holes in the rectangular plate. Both methods can ensure that the silkworms will not fall and all the silkworm feces will fall off.

[0004] On the other hand, for the operations of taking and placing silkworm trays, that is, putting in new trays, temporarily lifting old trays with silkworms, etc., the most common way to achieve this is to vacuum suck them and then rely on cylinders to lift and lower them. The advantage of this method is that the "clamping" action is replaced by the "sucking" action, and the execution of the entire action is relatively simple, but there are also disadvantages, including limited suction force, the need to be equipped with a vacuum pump, and the holes in the second type of silkworm net mentioned above will leak air, which can be said to be completely unsuitable.

[0005] The Chinese utility model patent with patent announcement number CN211769705U and announcement date 2020.10.27 discloses a suction cup type auxiliary lifting device, including an exhaust device, a ventilation pipe and at least one suction cup body. The upper end of the exhaust device is provided with a hook that cooperates with the intelligent crane. The upper end of the suction cup body is fixed with a connecting plate, and the lower end of the exhaust device is connected to the connecting plate. One end of the ventilation pipe is connected to the ventilation hole provided on the suction cup body, and the other end is connected to the air inlet hole provided at the lower end of the exhaust device.

[0006] The suction cup lifting device in this utility model patent generally works as follows: the pull rod is screwed to the vacuum cylinder to ensure the connection effect at the rear end, and the pull rod adjusts the piston upward so that the suction cup body has sufficient suction force to ensure the connection effect between the front end and the lifted object, and finally it can be safely lifted and placed.

[0007] However, the lifting device still has at least the following two shortcomings during actual use. In other words, these are the technical problems to be solved by the present invention.

[0008] First, using vacuum suction as the only connection method itself is risky. If any of the suction cup body, vent pipe, vacuum pump, or piston leaks, the lifted object may fall, which is very dangerous.

[0009] Second, although it eliminates the need for a vacuum pump, the method for establishing vacuum conditions is relatively complicated and requires rotating the pull rod many times, which is very inefficient.

[0010] Therefore, in summary, in view of the requirements for taking and placing silkworm trays, there is an urgent need for a new type of clamping and placing equipment that is safer and more efficient to use. Summary of the Invention

[0011] The present invention provides a clamping and placing device specially designed for silkworm trays. By arranging an upper cylinder, a mounting frame, a limit rod unit, a clamping plate unit, a driving screw unit and a pulling suction cup unit on a mounting plate, the clamping and placing device can ensure that the silkworm trays can be clamped, raised and lowered, and finally released more simply, safely and quickly.

[0012] The technical solution adopted by the present invention to solve the above problems is: a clamping and placing device dedicated to silkworm trays, the structure of which includes a mounting plate, an upper cylinder, and a mounting frame, and also includes a limit rod unit arranged on the lower surface of the mounting plate, a clamping plate unit sleeved on the limit rod unit and used to be inserted under the silkworm tray, a driving screw unit arranged on the lower surface of the mounting plate and screwed to the clamping plate unit, and a pulling suction cup unit arranged in the clamping plate unit, connected to the limit rod unit, and used to suck up the end corner of the silkworm tray to wait for the clamping plate unit to be inserted.

[0013] A further preferred technical solution is that the limit rod unit includes an end plate arranged on the lower surface of the mounting plate, a transverse limit rod arranged on the end plate, and a lower transverse groove arranged on the transverse limit rod and used to accommodate the pull-type suction cup unit.

[0014] A further preferred technical solution is that the clamping plate unit includes a transverse plate, a lower vertical plate arranged on the transverse plate, a bottom support plate arranged on the lower vertical plate and used to be inserted into the bottom of the silkworm tray, a limiting hole arranged on the transverse plate and connected to the transverse limiting rod, and a screw hole arranged on the transverse plate and screwed to the driving screw unit.

[0015] A further preferred technical solution is that: the number of the clamping plate units is two, which are respectively arranged at two sides of the silkworm tray, and the thread directions of the two screw holes are opposite.

[0016] A further preferred technical solution is that the driving screw unit includes a stepping motor arranged on the lower surface of the mounting plate, and a screw arranged on the stepping motor and connected to the screw hole.

[0017] A further preferred technical solution is that the pull-type suction cup unit includes a suction cup arranged on the side of the lower vertical plate and located above the bottom support plate, a piston cavity arranged in the lower vertical plate, a lifting piston arranged in the piston cavity, an air pipe arranged between the piston cavity and the suction cup, and a pull rope with one end arranged on the inner end surface of the lower horizontal groove and the other end connected to the upper surface of the lifting piston.

[0018] A further preferred technical solution is that a fixed pulley is provided in the limiting hole and is also located in the lower transverse groove.

[0019] A further preferred technical solution is that a rope channel is provided between the limiting hole and the piston cavity.

[0020] A further preferred technical solution is that a ventilation channel is provided between the air pipe and the piston cavity.

[0021] A further preferred technical solution is that a counterweight is provided in the lifting piston. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 This is a schematic diagram of the first structure of a silkworm tray in the prior art.

[0024] Figure 3 This is a second structural diagram of a silkworm tray in the prior art.

[0025] Figure 4 Schematic diagram of the position structure of the limit rod unit in the present invention when viewed from an upward angle.

[0026] Figure 5 It is a schematic diagram of the position structure of the clamping plate unit in the present invention.

[0027] Figure 6 Schematic diagram of the position structure of the pull-type suction cup unit in the present invention.

[0028] Figure 7 Schematic diagram of the position of the fixed pulley in the present invention.

[0029] Figure 8 This is a schematic diagram of the position structure of the counterweight block in the present invention.

[0030] In the accompanying drawings, the meanings of the reference numerals are as follows.

[0031] Silkworm tray a, conveyor b;

[0032] Mounting plate 11, upper cylinder 12, mounting frame 13, limiting rod unit 1, clamping plate unit 2, driving screw unit 3, pulling suction cup unit 4;

[0033] End plate 101, transverse limiting rod 102, lower transverse groove 103, transverse plate 201, lower vertical plate 202, bottom support plate 203, limiting hole 204, screw hole 205, stepping motor 301, screw 302, suction cup 401, piston chamber 402, lifting piston 403, air pipe 404, pull rope 405, fixed pulley 406, rope channel 407, ventilation channel 408, counterweight block 409. DETAILED DESCRIPTION

[0034] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0035] As attached Figure 1-8 As shown, a clamping and placing device specially used for silkworm discs has a structure including a mounting plate 11, an upper cylinder 12, and a mounting frame 13, and also includes a limiting rod unit 1 arranged on the lower surface of the mounting plate 11, a clamping plate unit 2 which is sleeved on the limiting rod unit 1 and is used to be inserted under the silkworm disc a, a driving screw unit 3 which is arranged on the lower surface of the mounting plate 11 and is screwed to the clamping plate unit 2, and a pulling suction cup unit 4 which is arranged in the clamping plate unit 2, connected to the limiting rod unit 1, and is used to suck up the end corner of the silkworm disc a to wait for the clamping plate unit 2 to be inserted.

[0036] In this embodiment, the mounting frame 13 spans the conveyor b, and the clamping plate unit 2 cooperates with the upper cylinder 12 to take out the silkworm tray a upward and put it downward in the lower silkworm frame, thereby achieving a basic clamping and placing effect of the silkworm tray a.

[0037] Among them, the clamping plate unit 2 is generally "L-shaped", so that the silkworm plate a is not easy to fall down or shift left or right on it, and the limit rod unit 1 ensures that the clamping plate unit 2 moves inward and outward more smoothly.

[0038] Then there is the driving screw unit 3, which is used to control the lateral movement of the clamping plate unit 2. In addition, the driving screw unit 3 can also be replaced by a ball screw to ensure that it drives the clamping plate unit 2 more labor-saving.

[0039] Finally, the pulling suction cup unit 4 is used to assist the insertion of the clamping plate unit 2, that is, it generates a relatively small and relatively short suction force during insertion, but it is sufficient to make the end corner of the silkworm plate a slightly tilted, making it easier to insert the clamping plate unit 2.

[0040] In addition, the above-mentioned suction force is directly generated by the movement of the piston inside the pulling suction cup unit 4 and indirectly generated by the lateral displacement of the clamping plate unit 2, thereby eliminating the need for a vacuum pump. The final unexpected effect is that the driving screw unit 3 can both trigger the movement of the clamping plate unit 2 and trigger the pulling suction cup unit 4 to suck the silkworm disk a.

[0041] The limiting rod unit 1 includes an end plate 101 arranged on the lower surface of the mounting plate 11, a transverse limiting rod 102 arranged on the end plate 101, and a lower transverse groove 103 arranged on the transverse limiting rod 102 and used to accommodate the pulling suction cup unit 4.

[0042] In this embodiment, one transverse limiting rod 102 corresponds to two end plates 101, and the lower transverse groove 103 is the fixed part of the pulling suction cup unit 4. When the clamping plate unit 2 undergoes relative displacement compared to the transverse limiting rod 102, the pulling suction cup unit 4 is pulled, and suction is finally generated smoothly.

[0043] The clamping plate unit 2 includes a transverse plate 201, a lower vertical plate 202 arranged on the transverse plate 201, a bottom support plate 203 arranged on the lower vertical plate 202 and used to be inserted under the silkworm plate a, a limiting hole 204 arranged on the transverse plate 201 and inserted into the transverse limiting rod 102, and a screw hole 205 arranged on the transverse plate 201 and screwed to the driving screw unit 3.

[0044] In this embodiment, the vertical cross-section of the bottom support plate 203 is a right triangle, and it is relatively easy to insert it below the end corner of the silkworm plate a. The one horizontal plate 201 plus the two lower vertical plates 202 form an "inverted U shape", ensuring that the silkworm plate a on this side can be more stably supported upward and limited on the side.

[0045] In addition, the screw hole 205 is located between the two limiting holes 204 , corresponding to the center position of the driving screw unit 3 , and the limiting hole 204 is a simple circular hole.

[0046] There are two clamping plate units 2, which are respectively arranged at two sides of the silkworm tray a, and the thread directions of the two screw holes 205 are opposite.

[0047] In this embodiment, the two clamping plate units 2 plus the two limiting rod units 1 are connected end to end to form a rectangular structure, ensuring that both ends of the clamping plate unit 2 can be effectively limited.

[0048] In addition, when the driving screw unit 3 rotates, the moving directions of the two clamping plate units 2 are exactly opposite, for example, one moves to the left and the other moves to the right, so they move closer to each other, and when the driving screw unit 3 rotates in the opposite direction, the former moves to the right and the latter moves to the left, so they separate from each other.

[0049] The driving screw unit 3 includes a stepping motor 301 disposed on the lower surface of the mounting plate 11 , and a screw 302 disposed on the stepping motor 301 and connected to the screw hole 205 .

[0050] In this embodiment, the screw hole 205 can be replaced by a nut of a ball screw, and the screw 302 can be replaced by a rod body of a ball screw. This method is more expensive, but it is relatively more labor-saving when driving the clamping plate unit 2.

[0051] In addition, the stepper motor 301 has many advantages such as being able to rotate in both forward and reverse directions, having high rotation accuracy, and being unable to rotate spontaneously, thereby ensuring that the rotation of the screw 302 is more efficient and safe.

[0052] Finally, a coupling is provided between the screw rod 302 and the motor shaft of the stepping motor 301 to ensure relatively sufficient connection stability.

[0053] The pulling suction cup unit 4 includes a suction cup 401 arranged on the side of the lower vertical plate 202 and located above the bottom support plate 203, a piston cavity 402 arranged in the lower vertical plate 202, a lifting piston 403 arranged in the piston cavity 402, an air pipe 404 arranged between the piston cavity 402 and the suction cup 401, and a pull rope 405 with one end arranged on the inner end surface of the lower horizontal groove 103 and the other end connected to the upper surface of the lifting piston 403.

[0054] In this embodiment, the suction cup 401 is in the shape of an inverted circular cover with a hole on its side, on which the air pipe 404 is installed to ensure strong air suction under the suction cup 401, thereby appropriately and slightly lifting the end corner of the silkworm plate a, making it easier to insert the bottom support plate 203 and preventing the bottom support plate 203 from squeezing the lower edge of the silkworm plate a.

[0055] Furthermore, the lifting piston 403 is always horizontal and can only descend vertically. The air pipe 404 and suction cup 401 are both made of hard rubber, ensuring they will not shrink due to suction. Furthermore, if the upper cylinder 12 suddenly stops during its upward movement, the air pipe 404 and suction cup 401 can also block the silkworm tray a, preventing it from falling due to a large "jump".

[0056] Finally, there is the pull rope 405, the fixed end of which is located on the inner end face of the lower transverse groove 103, close to the inner end face of the end plate 101, and the movable end is connected to the upper surface of the lifting piston 403 to ensure that the lifting piston 403 can be lifted upward smoothly.

[0057] A fixed pulley 406 is provided in the limiting hole 204 and is also located in the lower transverse groove 103 .

[0058] In this embodiment, the function of the fixed pulley 406 is to ensure that the pull rope 405 has only a horizontal section and a vertical section. The horizontal section is connected to the inner end face of the lower horizontal groove 103, and the vertical section is connected to the lifting piston 403. After the pull rope 405 is passed around it, the pull rope 405 itself is prevented from being deflected, entangled, or knotted.

[0059] A rope passage 407 is provided between the limiting hole 204 and the piston cavity 402 .

[0060] In this embodiment, the rope hole 407 is vertical, and the pull rope 405 is also always vertical, which ultimately ensures that the straight up and down movement of the pull rope 405 will not be subject to excessive friction and interference.

[0061] A ventilation channel 408 is provided between the air pipe 404 and the piston chamber 402 .

[0062] In this embodiment, the shape of the ventilation channel 408 is generally L-shaped, with the vertical upper end connected to the piston chamber 402 and the lateral side end connected to the air pipe 404, ensuring that once the lifting piston 403 is pulled upward relatively quickly, a certain negative pressure can eventually be formed under the suction cup 401, ensuring that the end corner of the silkworm plate a at this location can be slightly tilted, thereby facilitating the insertion of the bottom support plate 203.

[0063] Among them, the hardness of the material of the silkworm disk a should be moderate, set to common resin, and its thickness should not be too large. It can be set so that the lower surface of the suction cup 401 is 6-8mm away from the lower surface of the bottom support plate 203, the maximum thickness of the bottom support plate 203 itself is 3-4mm, and then the thickness of the silkworm disk a is 3-4mm.

[0064] A counterweight 409 is provided inside the lifting piston 403 .

[0065] In this embodiment, after the silkworm disc a is lowered to the required height, the clamping plate unit 2 needs to be withdrawn and separated. At this time, the lifting piston 403 will also drop, but there is a certain friction between it and the inner surface of the piston chamber 402, so there is a risk of it being difficult to fall, so the counterweight block 409 with a moderate weight is set.

[0066] The addition of the counterweight 409 will appropriately reduce the strength of the lifting piston 403 pulling upward quickly and generating suction, but it is more critical to ensure that the lifting piston 403 effectively descends. Therefore, the counterweight 409 must be set, but its weight cannot be too large.

[0067] Finally, this embodiment has the following advantages.

[0068] First, the two clamping plate units 2 can stably support the silkworm tray a upward and limit the silkworm tray a left and right, greatly reducing the risk of the silkworm tray a accidentally falling, and there is no restrictive requirement on the specific structural style of the silkworm tray a.

[0069] Second, the pulling suction cup unit 4 slightly sucks up the corner of the silkworm tray a, thereby assisting the insertion of the bottom support plate 203 and making it more convenient to insert.

[0070] Third, one end of the pull rope 405 is fixed to the limit rod unit 1, and the other end pulls the lifting piston 403, so that the centering and approaching action of the clamping plate unit 2 immediately triggers the suction action of the suction cup 401, without the need for an additional vacuum pump, and the entire action does not require additional operation.

[0071] Fourth, after the clamping plate unit 2 is retracted outward, the lifting piston 403 and the entire pulling suction cup unit 4 can be completely and quickly reset to wait for the next auxiliary suction action.

[0072] Fifth, in the internal structure of the pull-type suction cup unit 4, the pull rope 405 is not easy to be entangled and knotted, and the air tube 404 and the suction cup 401 can also prevent the silkworm disc a from separating and falling upward.

[0073] Sixth, the upper cylinder 12 ensures a basic lifting effect so that the silkworm tray a will not bump into the silkworm frame when being taken in and out.

[0074] Seventh, the entire device has a high degree of structural compactness and functional linkage, converting the displacement effect of the clamping plate unit 2 into a relatively small but sufficient suction effect at the pulling suction cup unit 4, ensuring that the insertion and clamping action of the clamping plate unit 2 is simpler and more labor-saving.

[0075] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the aforementioned embodiments. Various modifications are possible within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. These modifications are non-inventive and are protected by patent law as long as they fall within the scope of the claims of the present invention.

Claims

1. A clamping and placing device for silkworm trays, comprising a mounting plate (11), an upper cylinder (12), and a mounting frame (13), characterized in that: It also includes a limit rod unit (1) arranged on the lower surface of the mounting plate (11), a clamping plate unit (2) sleeved on the limit rod unit (1) and used for inserting under the silkworm disc (a), a driving screw unit (3) arranged on the lower surface of the mounting plate (11) and screwed to the clamping plate unit (2), and a pulling suction cup unit (4) arranged in the clamping plate unit (2) and connected to the limit rod unit (1) and used for sucking up the end corner of the silkworm disc (a) to wait for the clamping plate unit (2) to be inserted. The limiting rod unit (1) comprises an end plate (101) provided on the lower surface of the mounting plate (11), a transverse limiting rod (102) provided on the end plate (101), and a lower transverse groove (103) provided on the transverse limiting rod (102) and used to accommodate the pulling suction cup unit (4). The clamping plate unit (2) includes a transverse plate (201), a lower vertical plate (202) arranged on the transverse plate (201), a bottom support plate (203) arranged on the lower vertical plate (202) and used to be inserted into the bottom of the silkworm tray (a), a limiting hole (204) arranged on the transverse plate (201) and plugged into the transverse limiting rod (102), and a screw hole (205) arranged on the transverse plate (201) and screwed into the driving screw unit (3). The pulling suction cup unit (4) comprises a suction cup (401) arranged on the side of the lower vertical plate (202) and located above the bottom support plate (203), a piston cavity (402) arranged in the lower vertical plate (202), a lifting piston (403) arranged in the piston cavity (402), an air pipe (404) arranged between the piston cavity (402) and the suction cup (401), and a pull rope (405) one end of which is arranged on the inner end surface of the lower transverse groove (103) and the other end of which is connected to the upper surface of the lifting piston (403).

2. The silkworm tray-specific clamping and placing device according to claim 1, characterized in that: There are two clamping plate units (2), which are respectively arranged at two sides of the silkworm tray (a), and the thread directions of the two screw holes (205) are opposite.

3. The silkworm tray-specific clamping and placing device according to claim 1, characterized in that: The driving screw unit (3) comprises a stepping motor (301) arranged on the lower surface of the mounting plate (11), and a screw (302) arranged on the stepping motor (301) and connected to the screw hole (205).

4. The silkworm tray-specific clamping and placing device according to claim 1, characterized in that: A fixed pulley (406) is provided in the limiting hole (204) and is also located in the lower transverse groove (103).

5. The silkworm tray-specific clamping and placing device according to claim 1, characterized in that: A rope passage (407) is provided between the limiting hole (204) and the piston cavity (402).

6. The silkworm tray-specific clamping and placing device according to claim 1, characterized in that: A ventilation channel (408) is provided between the air pipe (404) and the piston chamber (402).

7. The silkworm tray-specific clamping and placing device according to claim 1, characterized in that: A counterweight (409) is provided in the lifting piston (403).

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