Powder discharging mechanism and method and cable bridge production line

Abstract

The invention relates to a powder discharging mechanism and method and a cable bridge production line. The powder discharging mechanism comprises a guide rail, the two ends of the guide rail are fixed to the top of a support, the support is used for supporting, lifting equipment capable of walking along the guide rail is arranged on the guide rail, the guide rail penetrates through a dust cover, and the bottom end of the dust cover is fixed to a platform; a door opening is formed in the side wall, penetrating through the guide rail, of the dust cover, the guide rail penetrates through the dust cover through the door opening, a hinged door mechanism is arranged at the position of the door opening, at least one stock bin fixed to the platform is arranged below the dust cover, a top opening of the stock bin serves as a feeding port, and the stock bin is fixed to a stock bin support and supported by the stock bin support. By the adoption of the discharging mechanism, pollution to the surrounding environment is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cable tray production, and in particular to a powder material unloading mechanism and method and a cable tray production line. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Cable trays, made from polyvinyl chloride resin powder, are powdered materials stored in bags and hoisted onto a steel structure platform using an electric hoist. Workers unpack the bags and pour them into a silo. A vacuum pump draws the powder through pipes to the mixing area, where the mixture is formulated and extruded into the cable tray product. The production of cable trays consists of three primary steps: unloading, batching, and mixing, and finally extrusion. During this unloading process, most manufacturers perform this process outdoors, with the silo top exposed. This generates significant amounts of dust, which seriously pollutes the environment. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a powder material unloading mechanism, method and cable tray production line, which avoid environmental pollution during unloading operations.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In the first aspect, an embodiment of the present invention provides a powder unloading mechanism, comprising a guide rail, wherein the two ends of the guide rail are fixed to the top of the bracket and supported by the bracket, and a lifting device capable of moving along the guide rail is provided on the guide rail, the guide rail passes through a dust cover, the bottom end of the dust cover is fixed on a platform, a door hole is provided on the side wall of the dust cover passing through the guide rail, the guide rail passes through the dust cover through the door hole, and a double-door mechanism is provided at the door hole, and at least one silo fixed to the platform is provided below the dust cover, the top of the silo is open and set as a feed port, and the silo is fixed on the silo bracket and supported by the silo bracket.

[0007] Optionally, the double-door mechanism includes a first door panel and a second door panel, both of which are slidingly connected to the side wall of the dust cover, and the first door panel and the second door panel are connected to a driving mechanism installed on the side wall of the dust cover to achieve synchronous movement toward or away from each other.

[0008] Optionally, sealing strips are provided on the opposite edges of the first door panel and the second door panel, and sealing strips are provided on the bottom edges of the first door panel and the second door panel.

[0009] Optionally, opposite edges of the first door panel and the second door panel are provided with grooves matching the shape of the guide rail, and the grooves can form openings for the guide rail to pass through when the first door panel and the second door panel are in a closed state.

[0010] Optionally, a sealing gasket is provided on the groove surface of the groove.

[0011] Optionally, the lifting equipment adopts an electric hoist with a walking function.

[0012] Optionally, a detection element is provided on the inner side of the side wall of the guide rail or dust cover, and the detection element corresponds to the silo and is used to detect whether the lifting equipment moves directly above the silo. The detection element is connected to the control system, and the control system is connected to the double-door mechanism.

[0013] Optionally, the detection element is a groove-type photoelectric switch fixed on the guide rail and located directly above the corresponding silo.

[0014] In the second aspect, an embodiment of the present invention provides a working method of the powder unloading mechanism described in the first aspect: the lifting equipment lifts the bagged powder and moves along the guide rail, the lifting equipment and the bagged powder enter the dust cover through the door opening and move to directly above the silo where the powder is to be fed, the double-door mechanism at the door opening closes and then closes the door opening, and then the silo receives the powder that falls after the bag is manually unpacked.

[0015] In a third aspect, an embodiment of the present invention provides a cable tray production line, which is equipped with the powder material unloading mechanism described in the first aspect.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The powder unloading mechanism of the present invention has a dust cover fixed on the platform above the silo, and a double-door mechanism is provided at the door opening of the dust cover. After the double-door mechanism is opened, the lifting equipment can enter the dust cover along the guide rail and then move to the top of the silo. The double-door mechanism is then closed. After the bag is manually unpacked, the powder in the bag can be sent to the silo for storage. During the dumping of the powder, the dust cover and the double-door mechanism form a closed environment, which isolates the powder from being emitted into the surrounding environment during the dumping process, thereby avoiding the pollution of the surrounding environment by the powder during the unloading and dumping process.

[0018] 2. The powder unloading mechanism of the present invention is provided with a detection element, which can detect whether the lifting equipment moves to the top of the silo, without the need for manual judgment by the staff, ensuring that the powder after unpacking can fall into the silo instead of being scattered on the platform, thereby improving the automation level of the unloading process and reducing the difficulty of the staff in controlling the unloading process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0020] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present invention;

[0021] Figure 2 This is a schematic diagram of the silo structure of Example 1 of the present invention;

[0022] Figure 3 This is a schematic structural diagram of a double-door mechanism according to embodiment 1 of the present invention;

[0023] Among them: 1. Steel structure platform, 2. Silo, 3. Silo bracket, 4. Dust cover, 5. Guide rail, 6. Guide rail bracket, 7. Electric hoist, 8. Double door mechanism, 9. Angle cage structure;

[0024] 8-1. First door panel, 8-2. Second door panel, 8-3. Driving mechanism, 8-4. Sealing strip, 8-5. Sealing strip, 8-6. Sealing strip, 8-7. Groove. DETAILED DESCRIPTION

[0025] Example 1

[0026] This embodiment provides a powder material feeding mechanism, such as Figure 1-Figure 2 The figure shows a steel structure platform 1, which is fixedly connected to the tops of multiple silos 2. In this embodiment, three silos 2 are provided, and the tops of the silos 2 are open. The top openings of the silos 2 serve as feed ports. The silos 2 are fixed to the tops of the silo brackets 3. The bottoms of the silo brackets 3 are provided with connecting plates, which are used to be fixed to the ground foundation through expansion bolts. The silo brackets 3 support the silos 2 and the steel structure platform 1. The structure of the steel structure platform 1, silos 2 and silo brackets 3 can adopt the structure of the existing cable tray production unloading mechanism, which is the existing technology, and its further specific structure will not be described in detail here.

[0027] A dust cover 4 is fixed on the steel structure platform 1. The dust cover 4 is made of sheet metal and its bottom end is welded and fixed to the steel structure platform 1. The dust cover 4 places the top opening of the silo 2 in a closed environment.

[0028] A guide rail 5 passes through the dust cover 4. The extension direction of the guide rail 5 is parallel to the distribution direction of the multiple silos 2. The two ends of the guide rail 5 are fixed to the top of the guide rail bracket 6. The bottom of the guide rail bracket 6 is used to be fixed to the ground foundation through expansion bolts. The guide rail bracket supports the guide rail.

[0029] In this embodiment, the guide rail bracket 6 adopts a triangular bracket structure, including two support rods, which are cross-welded and fixed at the top and fixed to one end of the guide rail 5. The bottom ends of the two support rods are welded with connecting plates, which are used to be fixed to the ground foundation through expansion bolts. A plurality of horizontally arranged cross braces are also welded between the two support rods to increase the structural strength of the entire guide rail bracket 6 and ensure the stability of the support.

[0030] In this embodiment, the support rods and cross braces are both made of square tubes.

[0031] The guide rail 5 is made of I-beam, and a lifting device capable of traveling along the guide rail 5 is provided. In this embodiment, the lifting device adopts an electric hoist 7 with a traveling function. Existing equipment can be used, and its specific structure will not be described in detail here.

[0032] The guide rail 5 vertically passes through two opposite side walls of the dust cover 4 , thereby enabling the guide rail 5 to pass through the dust cover 4 .

[0033] In this embodiment, a door hole is provided on the side wall of the dust cover 4 for the guide rail 5 to pass through. The guide rail passes through the side wall of the dust cover 4 through the door hole. A double door mechanism 8 is provided at the door hole to close or open the door hole.

[0034] like Figure 3 As shown, the double-door mechanism includes a first door panel 8-1 and a second door panel 8-2. The first door panel 8-1 and the second door panel 8-2 are slidably connected to the side wall of the dust cover through a sliding groove set on the side wall of the dust cover 4. The first door panel 8-1 and the second door panel 8-2 can move toward or away from each other synchronously.

[0035] The first door panel 8-1 and the second door panel 8-2 are connected to a driving mechanism 8-3 installed on the outer side of the side wall above the door opening, and the driving mechanism 8-3 can drive the first door panel 8-1 and the second door panel 8-2 to move toward or away from each other synchronously.

[0036] In this embodiment, the driving mechanism 8-3 adopts a bidirectional screw transmission mechanism, including a bidirectional screw, one end of the bidirectional screw is connected to the motor fixed to the side wall, and the other end is rotatably connected to the bearing seat fixed to the side wall, and the two parts of the bidirectional screw with opposite rotation directions are respectively connected to the first screw slider and the second screw slider, the first screw slider and the second screw slider are slidingly connected to the side wall of the dust cover, the first screw slider is connected to the first door panel 8-1, and the second screw slider is connected to the second door panel 8-2, and the connection positions of the first screw slider, the second screw slider and the first door panel and the second door panel are close to the edges of the first door panel 8-1 and the second door panel 8-2 facing each other.

[0037] The motor of the bidirectional screw transmission mechanism is connected to the control system and can receive instructions from the control system to work.

[0038] In another embodiment, the driving mechanism 8-3 adopts a belt transmission mechanism, the first door panel 8-1 is connected to the upper belt part of the belt transmission mechanism, and the second door panel 8-2 is connected to the lower belt part of the belt transmission mechanism to achieve movement toward or away from each other.

[0039] In order to further seal the internal space of the dust cover, a sealing strip 8-4 is provided at the facing edges of the first door panel 8-1 and the second door panel 8-2, a sealing strip 8-5 is provided at the bottom edge of the first door panel 8-1, and a sealing strip 8-6 is provided at the bottom edge of the second door panel 8-2. The sealing strips 8-6 at the bottom edges of the first door panel and the second door panel are sealed to the steel structure platform 1.

[0040] In this embodiment, in order to ensure that the closing of the first door panel 8-1 and the second door panel 8-2 is not affected by the guide rail, grooves 8-7 matching the shape of the guide rail are provided at the facing edges of the first door panel 8-1 and the second door panel 8-2. When the first door panel 8-1 and the second door panel 8-2 are in the closed state, the two grooves 8-7 are spliced ​​to form an opening matching the shape of the guide rail 3, and the guide rail 3 passes through the door opening and closing mechanism 8 through the opening.

[0041] Furthermore, a sealing gasket is provided on the groove surface of the groove 8 - 7 , and the sealing gasket is used to contact the guide rail 3 to seal the gap between the groove surface and the guide rail surface, thereby improving the sealing effect.

[0042] In this embodiment, the sealing strip and the sealing gasket are both made of rubber.

[0043] A corrugated plate is provided at the top edge of the silo 2 to form an angle cage structure 9 to further prevent the powder from dispersing.

[0044] Furthermore, a detection element corresponding to the silo is provided on the inner side surface of the side wall of the guide rail 3 or the dust cover 4, for detecting whether the electric hoist and the bagged powder have moved to the top of the silo.

[0045] In this embodiment, the detection element is provided on the guide rail 3 and adopts a U-shaped slot photoelectric switch fixed on the guide rail 3. Correspondingly, the electric hoist 7 is provided with a sensing plate that cooperates with the U-shaped slot photoelectric switch.

[0046] The U-groove photoelectric switch is connected to the control system and can send signals to the control system. When the U-groove photoelectric switch sends a signal, the control system controls the drive mechanism to work and close the bi-directional door mechanism.

[0047] By setting up the U-groove photoelectric switch, it is possible to detect whether the lifting equipment has moved to the top of the silo 2, ensuring that the powder material after unpacking can fall into the silo 2 instead of being spilled on the steel structure platform 1, thereby improving the automation level of the unloading process and reducing the difficulty of control of the unloading process by the staff.

[0048] The material unloading mechanism of this embodiment can be improved on the basis of the existing material bin, and the improvement is convenient.

[0049] Example 2

[0050] This embodiment provides a method for operating the powder material unloading mechanism described in Example 1. Before unloading, the bagged powder material is connected to the electric hoist 7 via a sling, the bi-directional door mechanism 8 is opened, and when the remote control moves the hoist 7 to the U-shaped slot photoelectric switch corresponding to the first silo 2, the control system sends a signal of arrival. At this point, the control system controls the bi-directional door mechanism to close, manually unpacks the bagged material, and pours the powder material into the first silo 2. The control process for unloading the powder material into the second and third silos 2 is the same as the first one and will not be repeated here.

[0051] Compared with the existing unloading mechanism, the unloading mechanism of this embodiment is as follows: a dust cover 4 is installed on the steel structure platform 1, and a double-door mechanism is installed at both ends of the dust cover. The first door panel 8-1 and the second door panel 8-2 of the double-door mechanism 8 are provided with sealing strips, thereby having the function of dumping powder in a closed space, isolating the powder from being emitted into the surrounding environment during the dumping process, and avoiding the pollution of the surrounding environment by the powder during the unloading and dumping process.

[0052] A U-shaped slot photoelectric switch is installed on the guide rail just above each silo 2. When the electric hoist 7 passes each U-shaped slot photoelectric switch, it indicates that the powder has moved to the silo 2. At this time, the control system can send out a signal for unloading and pouring. The personnel on the platform can start the unloading and pouring operations to ensure that the powder after unpacking can fall into the silo instead of spilling on the platform, thereby improving the automation level of the unloading process and reducing the difficulty of the personnel in controlling the unloading process.

[0053] Example 3

[0054] This embodiment provides a cable tray production line, which is equipped with the powder material unloading mechanism described in Example 1. The remaining equipment of the cable tray production line can adopt existing technologies and will not be described in detail here.

[0055] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A powder feeding mechanism, characterized in that: It includes a guide rail, two ends of which are fixed to the top of a bracket and supported by the bracket. A lifting device capable of moving along the guide rail is provided on the guide rail. The guide rail passes through a dust cover, and the bottom end of the dust cover is fixed to a platform. A door hole is provided on the side wall of the dust cover passing through the guide rail. The guide rail passes through the dust cover through the door hole, and a double-door mechanism is provided at the door hole. At least one silo fixed to the platform is provided below the dust cover, and an open top of the silo is provided as a feed port. The silo is fixed on a silo bracket and supported by the silo bracket.

2. A powder material feeding mechanism as claimed in claim 1, characterized in that: The double-door mechanism includes a first door panel and a second door panel, both of which are slidably connected to the side wall of the dust cover, and are connected to a driving mechanism installed on the side wall of the dust cover to achieve synchronous movement toward or away from each other.

3. A powder material feeding mechanism as claimed in claim 2, characterized in that: The opposite edges of the first door panel and the second door panel are provided with sealing strips, and the bottom edges of the first door panel and the second door panel are provided with sealing strips.

4. A powder material feeding mechanism as claimed in claim 2, characterized in that: The opposite edges of the first door panel and the second door panel are provided with grooves matching the shape of the guide rail, and the grooves can form an opening for the guide rail to pass through when the first door panel and the second door panel are in a closed state.

5. A powder material feeding mechanism as claimed in claim 4, characterized in that: A sealing gasket is arranged on the groove surface of the groove.

6. A powder material feeding mechanism as claimed in claim 1, characterized in that: The lifting device adopts an electric hoist with a walking function.

7. A powder material feeding mechanism as claimed in claim 1, characterized in that: A detection element is provided on the inner side of the side wall of the guide rail or the dust cover, and the detection element corresponds to the silo and is used to detect whether the lifting equipment moves to the top of the silo. The detection element is connected to the control system, and the control system is connected to the double-door mechanism.

8. A powder material feeding mechanism as claimed in claim 7, characterized in that: The detection element adopts a groove type photoelectric switch fixed on the guide rail and located just above the corresponding material bin.

9. A working method of the powder material feeding mechanism according to any one of claims 1 to 8, characterized in that: The lifting equipment lifts the bagged powder and moves along the guide rail. The lifting equipment and the bagged powder enter the dust cover through the door opening and move to just above the silo where the powder is to be delivered. The double door mechanism at the door opening closes and then closes the door opening. Then the silo receives the powder that falls after the bag is manually unpacked.

10. A cable tray production line, characterized in that: A powder material feeding mechanism as claimed in any one of claims 1 to 8 is provided.

Images