Cushion forming device for office chair

Abstract

The utility model discloses a cushion forming device for an office chair, which is characterized in that a hydraulic driving rod is fixedly mounted at the top of a rack, an upper die holder is fixedly mounted at the bottom end of the hydraulic driving rod, a fixed base is fixedly mounted at the bottom of the rack, and a lower die holder is fixedly mounted at the top of the fixed base; a left moving cross rod is movably embedded in one end of the top of the lower die holder, and a right moving cross rod is movably embedded in one end, far away from the left moving cross rod, of the top of the lower die holder, through matched use of the electric push rod and the moving frame, the left moving cross rod and the right moving cross rod are pulled to slide synchronously, and a cushion formed in the lower die holder is pushed out; a worker does not need to take a cushion manually, hand scalding caused by direct taking of the worker is prevented, the production safety is improved, meanwhile, the left moving cross rod and the right moving cross rod can seal and block the two sides of the lower die base in the production process, and raw materials such as sponge for cushion forming cannot fall off and permeate in the forming process.

Description

Technical Field

[0001] The utility model relates to the technical field of seat cushion molding, in particular to a seat cushion molding device for an office chair. Background Art

[0002] The internal filling of the office chair cushion is mainly sponge. This material has good elasticity and softness, which can provide a comfortable sitting feeling. The advantage of sponge cushion is mainly reflected in its comfort. Its good elasticity can provide a good wrapping feeling, making the buttocks more comfortable. The sponge is heated and extruded during the production process to form the required size and then installed inside the office chair cushion.

[0003] However, a large amount of heat still remains in the sponge after being heated and formed. Directly taking it can easily cause burns to the hands, and the time waiting for heat dissipation and cooling is long, which wastes a lot of time and reduces work efficiency. Therefore, the utility model provides a cushion forming device for an office chair to meet people's needs. Utility Model Content

[0004] The utility model provides a cushion forming device for an office chair, which can effectively solve the problem proposed in the above background technology that a large amount of heat still remains in the sponge after being heated and formed, and directly taking it can easily cause burns to the hands, while the time waiting for heat dissipation and cooling is long, which wastes a lot of time and reduces work efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a seat cushion forming device for an office chair, comprising a frame, the top of the frame is fixedly installed with a hydraulic drive rod, the bottom end of the hydraulic drive rod is fixedly installed with an upper mold base, the bottom of the frame is fixedly installed with a fixed base, the top of the fixed base is fixedly installed with a lower mold base, one end of the top of the lower mold base is movably embedded with a left movable cross bar, the top end of the lower mold base away from the left movable cross bar is movably embedded with a right movable cross bar, the surfaces of the left and right movable cross bars are fixedly connected with connecting plates, the bottom of the frame is symmetrically fixedly installed with an electric push rod at a position on one side of the fixed base, a moving block is fixedly connected between the ends of the two electric push rods, one end of the top of the moving block is fixedly connected with a moving frame, and a connecting rod is symmetrically fixedly installed in the middle of the moving frame;

[0006] The two sides of the movable frame are symmetrically fixed with protrusions, one end surface of the protrusion is fixedly bonded with a fitting pad, the two ends of the bottom of the frame are symmetrically fixed with fixed vertical rods, and the top of the fixed vertical rods is fixed with a pressure sensor.

[0007] Preferably, the upper die base is located directly above the lower die base, and heating plates are installed inside the upper die base and inside the fixed base.

[0008] Preferably, both ends of the left movable cross bar and the right movable cross bar are in contact with the inner wall of the lower mold base, one end of the movable frame is connected to the connecting plate on the surface of the left movable cross bar, and one end of the connecting rod is connected to the connecting plate on the surface of the right movable cross bar.

[0009] Preferably, the positions of the protrusion and the pressure sensor correspond to each other, and the signal output end of the pressure sensor is connected to the signal input end of the electric push rod.

[0010] Preferably, a mounting base is fixedly installed in the middle of one end of the frame, an axial flow fan is fixedly installed in the middle of the mounting base, a gas diversion box is fixedly installed in the middle of the frame at a position on one side of the mounting base, and air outlet holes are equidistantly provided at one end of the gas diversion box.

[0011] Preferably, the air outlet of the axial flow fan is connected to the middle of the gas diversion box through an air pipe, and the air outlet is facing upward of the lower mold base.

[0012] Compared with the existing technology, the beneficial effects of the present invention are as follows: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0013] 1. It is equipped with a left movable cross bar, a right movable cross bar, a connecting plate, an electric push rod, a movable block, a movable frame and a connecting rod. By cooperating with the electric push rod and the movable frame, the left movable cross bar and the right movable cross bar are pulled to slide synchronously to push out the seat cushion formed inside the lower die base. There is no need for staff to manually take the seat cushion, which prevents staff from directly taking the seat cushion and causing hand burns, thereby improving production safety. At the same time, the left movable cross bar and the right movable cross bar will seal and block both sides of the lower die base during production, so that raw materials such as sponge used for seat cushion molding will not fall and penetrate during molding.

[0014] 2. It is equipped with a bump, a fitting pad, a fixed vertical rod and a pressure sensor. Through the coordinated use of the bump and the pressure sensor, the forward position of the left movable cross bar and the right movable cross bar is monitored to prevent the left movable cross bar and the right movable cross bar from being positioned incorrectly on the lower die base, which may cause the failure of the heating and molding process. At the same time, the fitting pad plays a role of buffer protection to protect the end of the pressure sensor and prevent the pressure sensor from being damaged by direct collision.

[0015] 3. A mounting base, an axial flow fan, a gas diversion box and an air outlet are provided. Through the coordinated use of the axial flow fan and the gas diversion box, air flow is generated during the cushion molding production process and blown from the air outlet to the top of the lower mold base, dissipating the heat generated during molding to one side, preventing workers from being injured by hot air when approaching the lower mold base, and providing a certain safe area for workers to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0017] In the attached figure:

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the axial flow fan of the utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the pressure sensor of the utility model;

[0021] Figure 4 This is a schematic diagram of the installation structure of the connecting rod of the utility model;

[0022] Numbers in the figure: 1. Frame; 2. Hydraulic drive rod; 3. Upper die base; 4. Fixed base; 5. Lower die base; 6. Left moving cross bar; 7. Right moving cross bar; 8. Connecting plate; 9. Electric push rod; 10. Moving block; 11. Moving frame; 12. Connecting rod; 13. Bump; 14. Fitting pad; 15. Fixed vertical rod; 16. Pressure sensor; 17. Mounting seat; 18. Axial flow fan; 19. Gas diversion box; 20. Air outlet. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0024] Example: Figure 1-4As shown, the utility model provides a technical solution, a seat cushion forming device for an office chair, comprising a frame 1, a hydraulic drive rod 2 is fixedly installed on the top of the frame 1, an upper die seat 3 is fixedly installed on the bottom end of the hydraulic drive rod 2, a fixed base 4 is fixedly installed on the bottom of the frame 1, a lower die seat 5 is fixedly installed on the top of the fixed base 4, the upper die seat 3 is located directly above the lower die seat 5, a heating plate is installed inside the upper die seat 3 and inside the fixed base 4, one end of the top of the lower die seat 5 is movably embedded with a left movable cross bar 6, the top end of the lower die seat 5 away from the left movable cross bar 6 is movably embedded with a right movable cross bar 7, the surfaces of the left movable cross bar 6 and the right movable cross bar 7 are fixedly connected with a connecting plate 8, both ends of the left movable cross bar 6 and the right movable cross bar 7 are in contact with the inner wall of the lower die seat 5, and one end of the movable frame 11 is in contact with the surface of the left movable cross bar 6 The connecting plates 8 are connected, one end of the connecting rod 12 is connected to the connecting plate 8 on the surface of the right moving cross bar 7, the bottom of the frame 1 is symmetrically fixed with an electric push rod 9 at a position on one side of the fixed base 4, a moving block 10 is fixedly connected between the ends of the two electric push rods 9, one end of the top of the moving block 10 is fixedly connected to a moving frame 11, and a connecting rod 12 is symmetrically fixedly installed on the middle part of the moving frame 11. Through the coordinated use of the electric push rod 9 and the moving frame 11, the left moving cross bar 6 and the right moving cross bar 7 are pulled to slide synchronously to push out the seat cushion formed inside the lower mold base 5, without the need for staff to manually take the seat cushion, to prevent staff from directly taking it and causing burns to their hands, thereby improving production safety. At the same time, the left moving cross bar 6 and the right moving cross bar 7 will seal and block both sides of the lower mold base 5 during production, so that raw materials such as sponge used for cushion molding will not fall and penetrate during molding;

[0025] The two sides of the movable frame 11 are symmetrically fixed with protrusions 13, and one end surface of the protrusion 13 is fixedly bonded with a bonding pad 14. The two ends of the bottom of the frame 1 are symmetrically fixed with fixed vertical rods 15, and the top of the fixed vertical rod 15 is fixedly installed with a pressure sensor 16. The positions of the protrusions 13 and the pressure sensor 16 correspond to each other. The signal output end of the pressure sensor 16 is connected to the signal input end of the electric push rod 9. Through the coordinated use of the protrusions 13 and the pressure sensor 16, the forward positions of the left movable cross bar 6 and the right movable cross bar 7 are monitored to prevent the left movable cross bar 6 and the right movable cross bar 7 from failing in the heating and molding process due to the wrong position of the left movable cross bar 6 and the right movable cross bar 7 on the lower mold base 5. At the same time, the bonding pad 14 plays a role of buffer protection, protecting the end of the pressure sensor 16 to prevent the pressure sensor 16 from being damaged by direct collision.

[0026] A mounting base 17 is fixedly installed in the middle of one end of the frame 1, and an axial flow fan 18 is fixedly installed in the middle of the mounting base 17. A gas diversion box 19 is fixedly installed in the middle of the frame 1 at a position on one side of the mounting base 17. Air outlet holes 20 are equidistantly provided at one end of the gas diversion box 19. The air outlet of the axial flow fan 18 is connected to the middle of the gas diversion box 19 through an air pipe. The air outlet 20 faces the top of the lower mold base 5. Through the coordinated use of the axial flow fan 18 and the gas diversion box 19, air flow is generated during the cushion molding production process, and is blown to the top of the lower mold base 5 through the air outlet 20, blowing the heat generated during molding to one side, preventing the staff from being injured by hot air when approaching the lower mold base 5, so as to provide a certain safe area for the staff to operate.

[0027] After the seat cushion is formed, the hydraulic drive rod 2 pulls the upper die seat 3 upward, and the large amount of heat generated during the forming process will be dissipated outwards. The axial flow fan 18 is started to generate airflow, which is blown from the gas diverter box 19 and the air outlet 20 to the top of the lower die seat 5, and the heat dissipated above it is blown away so that it will not spread everywhere. The staff standing on the side close to the axial flow fan 18 will not be smoked by the heat.

[0028] Then, the electric push rod 9 contracts, pulling the moving frame 11 and the connecting rod 12 forward, and the left moving cross bar 6 and the right moving cross bar 7 are pushed forward, and the right moving cross bar 7 slides from the inside of the lower mold base 5, which will push the formed cushion out and make it detach from the inside of the lower mold base 5. Then, the electric push rod 9 extends forward, pushing the moving frame 11 and the connecting rod 12 to move, and the protrusion 13 moves with the moving frame 11. The fitting pad 14 fits with the end of the pressure sensor 16. After the pressure sensor 16 senses the predetermined pressure, the electric push rod 9 no longer extends, and the left moving cross bar 6 and the right moving cross bar 7 return to the inside of the lower mold base 5, and the sponge material is put into the inside of the lower mold base 5 to continue the subsequent cushion forming. If the pressure value sensed by the pressure sensor 16 becomes smaller or larger, it indicates that the left moving cross bar 6 and the right moving cross bar 7 are misaligned, and timely adjustments are made.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cushion forming device for an office chair, comprising a frame (1), characterized in that: The top of the frame (1) is fixedly mounted with a hydraulic drive rod (2), the bottom end of the hydraulic drive rod (2) is fixedly mounted with an upper die seat (3), the bottom of the frame (1) is fixedly mounted with a fixed base (4), the top of the fixed base (4) is fixedly mounted with a lower die seat (5), one end of the top of the lower die seat (5) is movably embedded with a left movable cross bar (6), the top end of the lower die seat (5) away from the left movable cross bar (6) is movably embedded with a right movable cross bar (7), the surfaces of the left movable cross bar (6) and the right movable cross bar (7) are both fixedly connected with a connecting plate (8), the bottom of the frame (1) is symmetrically fixedly mounted with an electric push rod (9) at a position on one side of the fixed base (4), a moving block (10) is fixedly connected between the ends of the two electric push rods (9), one end of the top of the moving block (10) is fixedly connected with a moving frame (11), and a connecting rod (12) is symmetrically fixedly mounted in the middle of the moving frame (11); The two sides of the movable frame (11) are symmetrically fixed with protrusions (13), one end surface of the protrusion (13) is fixedly bonded with a bonding pad (14), the two ends of the bottom of the frame (1) are symmetrically fixed with fixed vertical rods (15), and the top of the fixed vertical rod (15) is fixed with a pressure sensor (16).

2. A cushion forming device for an office chair according to claim 1, characterized in that: The upper die base (3) is located directly above the lower die base (5), and heating plates are installed inside the upper die base (3) and inside the fixed base (4).

3. The cushion forming device for an office chair according to claim 1, characterized in that: Both ends of the left movable cross bar (6) and the right movable cross bar (7) are in contact with the inner wall of the lower die base (5); one end of the movable frame (11) is connected to the connecting plate (8) on the surface of the left movable cross bar (6); and one end of the connecting rod (12) is connected to the connecting plate (8) on the surface of the right movable cross bar (7).

4. The cushion forming device for an office chair according to claim 1, characterized in that: The positions of the convex block (13) and the pressure sensor (16) correspond to each other, and the signal output end of the pressure sensor (16) is connected to the signal input end of the electric push rod (9).

5. The cushion forming device for an office chair according to claim 1, characterized in that: A mounting seat (17) is fixedly mounted in the middle of one end of the frame (1), an axial flow fan (18) is fixedly mounted in the middle of the mounting seat (17), a gas diversion box (19) is fixedly mounted in the middle of the frame (1) at a position on one side of the mounting seat (17), and one end of the gas diversion box (19) is provided with air outlet holes (20) at equal intervals.

6. The cushion forming device for an office chair according to claim 5, characterized in that: The air outlet of the axial flow fan (18) is connected to the middle of the gas distribution box (19) through an air pipe, and the air outlet (20) faces the upper side of the lower mold base (5).

Images