Intermittent ventilation device and control method

Abstract

The invention belongs to the technical field of production equipment, and discloses an intermittent ventilation device and a control method.The intermittent ventilation device comprises a working table, the working table is provided with a plurality of clamping devices and an air inlet device, the air inlet device is provided with an air inlet, and the clamping devices are driven by an air cylinder; air cylinders of the multiple clamping devices are connected to an air inlet device through air pipes, the working table board flows on the conveying belt, a rotatable air supply port device is arranged on one side of the conveying belt and connected to an external air source, and after the working table board flows in place, the rotatable air supply port device rotates to enable an air supply port to be aligned with an air inlet. Ventilation of the clamping device is achieved. The air inlet device is arranged at each station, the rotatable air supply port device is arranged on one side of the conveying belt, automatic connection is achieved after the working table is in place, the clamp is made to get rid of constraint of the air pipe, and working procedure circulation is achieved. And a firm foundation is laid for realizing automatic screw driving of the manipulator.

Description

Technical Field

[0001] The invention belongs to the technical field of production equipment, and in particular relates to an intermittent ventilation device and a control method. Background Art

[0002] During the production and installation of some furniture such as chairs, the products need to be screwed and tightened. When screwing, the product must be clamped and fixed with a clamp to prevent movement. This type of clamp is generally driven by a cylinder for loosening and clamping, and the cylinder is connected to the working air source through an air pipe. Therefore, in the prior art, the clamp can only be used in a fixed manner, and the process flow cannot be realized, the operation cannot be done in one piece, the process cannot be evenly distributed, and an island-style operation is formed. There is a backlog of materials at each position, and the production line channels are blocked, resulting in low production efficiency and safety hazards. Summary of the invention

[0003] The object of the present invention is to provide an intermittent ventilation device and a control method to solve the above-mentioned technical problems.

[0004] To achieve the above-mentioned purpose, the specific technical scheme of an intermittent ventilation device and control method of the present invention is as follows: An intermittent ventilation device includes a work surface, the work surface is provided with a plurality of clamping devices and an air inlet device, the air inlet device is provided with an air inlet, the clamping device is driven by a cylinder, the cylinders of the plurality of clamping devices are connected to the air inlet device through an air pipe, the work surface rotates on a conveyor belt, a rotatable air supply port device is provided on one side of the conveyor belt, the rotatable air supply port device is connected to an external air source, after the work surface rotates into place, the rotatable air supply port device rotates to align the air supply port with the air inlet, thereby realizing ventilation of the clamping device.

[0005] Furthermore, a retractable positioning and blocking device is provided under the conveyor belt. When the work surface is blocked by the positioning and blocking device while circulating on the conveyor belt, the conveyor belt stops working, and the rotatable air supply port device rotates to align the air supply port with the air inlet.

[0006] Furthermore, the air inlet device also includes an air outlet arranged on the side, the air inlet is arranged above the air inlet device, the air inlet is docked with the rotatable air supply port device, the air outlet is connected to the main air pipe, and the main air pipe is connected to the cylinder of the clamping device through a branch.

[0007] Furthermore, the rotatable air supply port device includes a fixed bracket, a rotating cylinder, a support rod, and an air supply joint. The fixed bracket is fixedly installed on one side of the conveyor belt, and the rotating cylinder is fixedly installed on the fixed bracket. The upper output end of the rotating cylinder is connected to one end of the support rod, and the other end of the support rod is connected to the air supply joint. The air supply joint has an air source input port on the side and an air source output port on the bottom. The air source input port is connected to an external air source, and the rotating cylinder is connected to an external air source. The air supply joint can rotate under the drive of the rotating cylinder.

[0008] Furthermore, a sealing gasket is installed on the air inlet of the air inlet device.

[0009] Furthermore, the positioning and blocking device includes a mounting base, a fixed seat, a rotating shaft fixed seat, a rotating roller member and a lifting cylinder. The mounting base is fixedly mounted on the inner side of the fixed frame on both sides of the conveyor belt, the fixed seat is mounted on the mounting base, a lifting cylinder is installed below the mounting base, the lifting rod of the lifting cylinder passes through the fixed seat and can extend out of the fixed seat, the rotating shaft fixed seat is fixedly mounted on both sides of the fixed seat below, the rotating roller member is connected to the rotating shaft fixed seat shaft by a torsion spring in the middle, can rotate around a fixed point and reset, the rotating roller member has a roller at the upper end and a lifting part at the lower end, and the lifting part is aligned with the lifting rod.

[0010] Furthermore, under normal conditions, the rotating roller member maintains a lifted state under the action of the torsion spring force, and the roller can be stuck in the groove in front of the work surface to limit the movement of the work surface; when the equipment control system detects the reset signal of the transfer air port device, it controls the lifting rod of the lifting cylinder to push out, lift the lifting part of the rotating roller member, so that the rotating roller member rotates around the rotating shaft fixing seat, and the roller moves downward to break away from the obstruction of the work surface.

[0011] The present invention also discloses a control method for an intermittent ventilation device, comprising the following steps: The work surface flows on the conveyor belt. When the work surface is blocked by the positioning blocking device, the conveyor belt stops working, and the control system controls the rotating cylinder of the rotatable air supply port device to rotate, driving the air supply joint to rotate, aligning the air source output port with the air inlet of the air inlet device, ventilating the clamping device, and the clamping device clamps the product. The worker performs operations such as screwing. After the operation is completed, the control system controls the rotating cylinder of the rotatable air supply port device to rotate, driving the air supply joint to reset, the control system controls the lifting cylinder to lift, the roller retracts, the conveyor belt continues to work, and the work surface flows to the next process.

[0012] The intermittent ventilation device and control method of the present invention have the following advantages: the present invention sets an air inlet device at each workstation and sets a rotatable air delivery device on one side of the conveyor belt, which is automatically connected after the worktable is in place, allowing the fixture to break free from the restraint of the air pipe and achieve process flow, laying a solid foundation for realizing automatic screwing of the robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the intermittent ventilation device of the present invention; Figure 2 It is a schematic diagram of the structure of the air inlet device of the present invention; Figure 3 It is a structural schematic diagram of the rotatable air delivery port device of the present invention; Figure 4 This is a schematic diagram of the installation structure of the positioning and blocking device of the present invention; Figure 5 It is a schematic diagram of the structure of the positioning and blocking device of the present invention; Explanation of the markings in the figure: 1. Work surface; 11. Notch; 2. Clamping device; 3. Air inlet device; 31. Air inlet; 32. Air outlet; 4. Rotatable air supply port device; 41. Fixed bracket; 42. Rotating cylinder; 43. Support rod; 44. Air supply joint; 441. Air source input port; 442. Air source output port; 5. Positioning blocking device; 51. Mounting base; 52. Fixed seat; 53. Rotating shaft fixed seat; 54. Rotating roller member; 541. Roller; 542. Lifting part; 55. Lifting cylinder; 551. Lifting rod. DETAILED DESCRIPTION

[0014] In order to better understand the purpose, structure and function of the present invention, an intermittent ventilation device and a control method of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0015] like Figure 1-4 As shown, an intermittent ventilation device of the present invention includes a work surface 1, and the work surface 1 is provided with a plurality of clamping devices 2 and an air inlet device 3. The clamping device 2 is driven by a cylinder, and the cylinders of the plurality of clamping devices 2 are connected to the air inlet device 3 through an air pipe. The work surface 1 flows on a conveyor belt, and a rotatable air supply port device 4 is provided on one side of the conveyor belt, and the rotatable air supply port device 4 is connected to an external air source. A retractable positioning and blocking device 5 is provided under the conveyor belt. When the work surface 1 is blocked by the positioning and blocking device 5 while flowing on the conveyor belt, the conveyor belt stops working, and the rotatable air supply port device 4 rotates to align the air supply port with the air inlet of the air inlet device 3, so as to realize ventilation of the clamping device 2, clamp the product, and perform operations such as screwing. After the operation is completed, the rotatable air supply port device 4 resets the air supply port, and the positioning and blocking device 5 retracts, and the conveyor belt continues to work, and the work surface 1 flows to the next process.

[0016] The air inlet device 3 has an air inlet 31 on the top and an air outlet 32 ​​on the side. The air inlet 31 is connected to the rotatable air supply port device 4, and the air outlet 32 ​​is connected to the main air pipe, which is connected to the cylinder of the clamping device 2 through a branch.

[0017] The rotatable air supply port device 4 includes a fixed bracket 41, a rotating cylinder 42, a support rod 43, and an air supply joint 44. The fixed bracket 41 is fixedly installed on one side of the conveyor belt, and the rotating cylinder 42 is fixedly installed on the fixed bracket 41. The upper output end of the rotating cylinder 42 is connected to one end of the support rod 43, and the other end of the support rod 43 is connected to the air supply joint 44. The air supply joint 44 has an air source input port 441 on the side and an air source output port 442 at the bottom. The air source input port 441 is connected to an external air source. The rotating cylinder 42 is connected to an external air source, and the air supply joint 44 can rotate under the drive of the rotating cylinder 42. When the work table 1 moves into place, the rotating cylinder 42 rotates, driving the air supply joint 44 to rotate, aligning the air source output port 442 with the air inlet 31 of the air inlet device 3, and ventilating the clamping device 2. After the operation is completed, the rotating cylinder 42 rotates, driving the air supply joint 44 to reset.

[0018] Preferably, in order to ensure the sealing performance during ventilation, a sealing gasket 33 is installed on the air inlet 31 of the air inlet device 3 to ensure air tightness.

[0019] like Figure 4 Figure 5 As shown, the work surface 1 has a notch 11 in the front for the positioning and blocking device 5 to be inserted. The positioning and blocking device 5 includes a mounting base 51, a fixing base 52, a rotating shaft fixing base 53, a rotating roller member 54 and a lifting cylinder 55. The mounting base 51 is fixedly mounted on the inner side of the fixing frame on both sides of the conveyor belt, the fixing base 52 is mounted on the mounting base 51, and a lifting cylinder 55 is installed below the mounting base 51. The lifting rod 551 of the lifting cylinder 55 passes through the fixing base 52 and can extend out of the fixing base 52. The rotating shaft fixing base 53 is fixedly mounted on both sides of the fixing base 52 below. The middle of the rotating roller member 54 is connected to the rotating shaft fixing base 53 axis through a torsion spring and can rotate around a fixed point and reset. The rotating roller member 54 has a roller 541 at the upper end and a lifting portion 542 at the lower end. The lifting portion 542 is aligned with the lifting rod 551. Under normal conditions, the rotating roller member 54 keeps the roller 541 in a lifted state under the action of the torsion spring elastic force, and the roller 541 can be stuck in the notch 11 in front of the work table 1 to limit the movement of the work table 1. The design of the roller 541 can reduce the friction with the slot 11 and reduce the loss. When the equipment control system detects the reset signal of the rotatable air delivery port device 4, it controls the lifting rod 551 of the lifting cylinder 55 to lift the lifting part 542 of the rotating roller member 54, so that the rotating roller member 54 rotates around the rotating shaft fixing seat 53, and the roller 541 moves downward to break away from the obstruction of the work surface 1.

[0020] A control method of an intermittent ventilation device of the present invention comprises the following steps: The work surface 1 flows on the conveyor belt. When the work surface 1 is blocked by the positioning blocking device 5, the conveyor belt stops working, and the control system controls the rotating cylinder 42 of the rotatable air supply port device 4 to rotate, driving the air supply joint 44 to rotate, aligning the air source output port 442 with the air inlet 31 of the air inlet device 3, ventilating the clamping device 2, and the clamping device 2 clamps the product. The worker performs operations such as screwing. After the operation is completed, the control system controls the rotating cylinder 42 of the rotatable air supply port device 4 to rotate, driving the air supply joint 44 to reset, and the control system controls the lifting cylinder 55 to lift, and the roller 541 to retract. The conveyor belt continues to work and transfers the work surface 1 to the next process.

[0021] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An intermittent ventilation device, comprising a work surface (1), the work surface (1) having a plurality of clamping devices (2) and an air inlet device (3), the air inlet device (3) being provided with an air inlet (31), the clamping device (2) being driven by a cylinder, and characterized in that: The cylinders of the plurality of clamping devices (2) are connected to the air inlet device (3) via air pipes. The work surface (1) is circulated on a conveyor belt. A rotatable air supply device (4) is provided on one side of the conveyor belt. The rotatable air supply device (4) is connected to an external air source. After the work surface (1) is circulated into position, the rotatable air supply device (4) is rotated to align the air supply port with the air inlet (31), thereby achieving ventilation of the clamping device (2).

2. The intermittent ventilation device according to claim 1, characterized in that: A retractable positioning and blocking device (5) is provided below the conveyor belt. When the work surface (1) is blocked by the positioning and blocking device (5) while circulating on the conveyor belt, the conveyor belt stops working and the rotatable air supply port device (4) rotates to align the air supply port with the air inlet (31).

3. The intermittent ventilation device according to claim 1, characterized in that: The air inlet device (3) further comprises an air outlet (32) arranged on the side, the air inlet (31) is arranged above the air inlet device (3), the air inlet (31) is connected to the rotatable air supply device (4), and the air outlet (32) is connected to the main air pipe, and the main air pipe is connected to the cylinder of the clamping device (2) through a branch.

4. The intermittent ventilation device according to claim 1, characterized in that: The rotatable air supply port device (4) comprises a fixed bracket (41), a rotating cylinder (42), a support rod (43), and an air supply joint (44); the fixed bracket (41) is fixedly mounted on one side of a conveyor belt; the rotating cylinder (42) is fixedly mounted on the fixed bracket (41); the upper output end of the rotating cylinder (42) is connected to one end of the support rod (43); the other end of the support rod (43) is connected to an air supply joint (44); the air supply joint (44) has an air source input port (441) on the side and an air source output port (442) at the bottom; the air source input port (441) is connected to an external air source; the rotating cylinder (42) is connected to an external air source; and the air supply joint (44) can rotate under the drive of the rotating cylinder (42).

5. The intermittent ventilation device according to claim 1, characterized in that: A sealing gasket is installed on the air inlet (31) of the air inlet device (3).

6. The intermittent ventilation device according to claim 1, characterized in that: The front of the work surface (1) is provided with a notch (11) for the positioning and blocking device (5) to be inserted into.

7. The intermittent ventilation device according to claim 2, characterized in that: The positioning and blocking device (5) comprises a mounting base (51), a fixing base (52), a rotating shaft fixing base (53), a rotating roller member (54) and a lifting cylinder (55). The mounting base (51) is fixedly mounted on the inner side of the fixing frame on both sides of the conveyor belt. The fixing base (52) is mounted on the mounting base (51). A lifting cylinder (55) is mounted below the mounting base (51). A lifting rod (551) of the lifting cylinder (55) passes through the fixing base (52) and can extend out of the fixing base (52). The rotating shaft fixing base (53) is fixedly mounted on both sides of the fixing base (52) below. The rotating roller member (54) is connected to the shaft of the rotating shaft fixing base (53) through a torsion spring in the middle and can rotate around a fixed point and reset. The rotating roller member (54) has a roller (541) at the upper end and a lifting portion (542) at the lower end. The lifting portion (542) is aligned with the lifting rod (551).

8. The intermittent ventilation device according to claim 7, characterized in that: Under normal conditions, the rotating roller member (54) maintains the roller (541) in a lifted state under the action of the torsion spring force, and the roller (541) can be inserted into the slot (11) in front of the work surface (1) to limit the movement of the work surface (1); when the equipment control system detects a reset signal of the transfer air port device, it controls the lifting rod (551) of the lifting cylinder to be pushed out, thereby lifting the lifting part (542) of the rotating roller member (54), so that the rotating roller member (54) rotates around the rotating shaft fixing seat (53), and the roller (541) moves downward to break away from the obstruction of the work surface (1).

9. A method for controlling an intermittent ventilation device according to any one of claims 1 to 8, characterized in that: The steps include: The work surface (1) is circulated on the conveyor belt. When the work surface (1) is blocked by the positioning blocking device (5), the conveyor belt stops working. The control system controls the rotating cylinder (42) of the rotatable air supply port device (4) to rotate, driving the air supply joint (44) to rotate, aligning the air source output port (442) with the air inlet (31) of the air inlet device (3), ventilating the clamping device (2), and the clamping device (2) clamps the product. The worker performs operations such as screwing. After the operation is completed, the control system controls the rotating cylinder (42) of the rotatable air supply port device (4) to rotate, driving the air supply joint (44) to reset, and the control system controls the lifting cylinder (55) to lift, the roller (541) to retract, and the conveyor belt continues to work, and the work surface (1) is transferred to the next process.

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