Headrest foaming line die changing system

Abstract

The invention relates to the field of foaming lines, in particular to the field of headrest foaming production line die changing equipment, and particularly relates to a headrest foaming line die changing system. Comprising a chain rotation conveying line, a plurality of on-line mold carrying trolleys are installed on a chain of the chain rotation conveying line, a protective grid is arranged on the outer side of the chain rotation conveying line, a mold changing area is arranged on the inner side of the protective grid, a plurality of on-line mold carrying trolleys are arranged on the outer side of the protective grid, and a ground rail and a guide rail are arranged in the mold changing area. Mould are installed on the on-line mould loading trolley and the off-line mould loading trolley in a sliding mode, and the moulds are fixed to the two kinds of trolleys through a first locking assembly and a second locking assembly respectively. And a mold changing station with an electric hoist is arranged outside the line body, so that mold hoisting, storage, preassembling and function detection can be realized. According to the system, automatic positioning and mold stopping are achieved through the electric control system, rapid mold replacement is completed through manual cooperation with the mold replacement trolley, mold preassembling and turnover are achieved through assistance of the mold replacement station, the mold replacement stopping time is greatly shortened, the labor intensity is reduced, it is ensured that the mold is accurately positioned and stably installed, and the production efficiency and the production line flexibility are improved.

Description

Technical Field

[0001] This invention relates to the field of foaming lines, and more particularly to a headrest foaming line mold changing system. Background Technology

[0002] When producing headrestling foam production lines for different specifications and models of headrestling products, it is necessary to frequently change the corresponding foaming molds. Traditional mold-changing methods have several drawbacks: First, changing molds requires manual shutdown of the production line and the collaborative handling of heavy molds by multiple people, resulting in high labor intensity and a high risk of mold damage from impacts. Second, mold positioning relies on manual calibration, which lacks precision and can easily lead to dimensional deviations and unstable molding quality in subsequent headrest products. Third, during mold changing, the production line needs to be shut down for extended periods, with mold disassembly, handling, installation, and debugging consuming significant time and severely impacting production efficiency. Fourth, there is a lack of dedicated mold pre-assembly, storage, and functional testing stations; new molds must be installed on the production line before testing, and if functional failures are found, they must be disassembled and replaced again, further extending downtime and increasing production costs. Fifth, the disorderly turnover of molds can easily cause chaotic site occupation and poses safety hazards during manual handling.

[0003] Therefore, it is necessary to provide a headrest foaming line mold changing system to solve the above-mentioned technical problems. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a headrest foaming line mold changing system.

[0005] This invention provides a headrestling foam line mold changing system, comprising a chain rotary conveyor line, on which a plurality of online mold-carrying trolleys are mounted. A protective grid is provided on the outer side of the chain rotary conveyor line, and a mold changing area is provided on the inner side of the protective grid near the chain rotary conveyor line. A plurality of offline mold-carrying trolleys are provided outside the protective grid. A ground track is provided in the mold changing area for the offline mold-carrying trolleys to pass through. A guide rail is fixed on the ground track to keep the offline mold-carrying trolleys and the online mold-carrying trolleys parallel. Molds are slidably mounted on both the offline mold-carrying trolleys and the online mold-carrying trolleys. The molds are connected to the online mold-carrying trolleys via a second locking component, and the molds are connected to the offline mold-carrying trolleys via a first locking component.

[0006] Preferably, the online mold-laying trolley is equipped with a pin, and the online mold-loading trolley is equipped with a positioning block that engages with the pin. The precise engagement of the pin and the positioning block ensures the coaxiality and parallelism of the online mold-laying trolley and the online mold-loading trolley when they are docked, providing a stable reference for mold translation.

[0007] Preferably, the bottom of the online mold-making trolley is equipped with casters at all four corners, which facilitates the flexible movement of the online mold-making trolley in non-track areas; the bottom of the online mold-making trolley is equipped with guide wheels that roll in cooperation with the guide rail, and the entrance of the guide rail is flared, which facilitates the online mold-making trolley to be quickly guided into the guide rail and improves docking efficiency.

[0008] Preferably, the mold includes a mounting plate and a mold body fixed on the mounting plate. The mounting plate is provided with locking holes. The mounting plate provides a stable mounting base for the mold body, and the locking holes are used to cooperate with locking components to fix the mold.

[0009] Preferably, the first locking component includes a wrench-type clamp. The wrench-type clamp is installed on the online mold-downloading trolley. The clamping end of the wrench-type clamp is inserted into the locking hole. By manually tightening the wrench-type clamp, the mold mounting plate can be quickly fixed on the online mold-downloading trolley to prevent the mold from shifting during transportation.

[0010] Preferably, the second locking component includes a locking cylinder fixed on the online mold-carrying trolley. The output end of the locking cylinder cooperates with the locking hole. The extension and retraction of the locking cylinder is controlled by electronic control to realize the automatic locking and unlocking of the mold and the online mold-carrying trolley. The operation is convenient and the fixation is reliable.

[0011] Preferably, both the online mold-downloading trolley and the online mold-loading trolley are equipped with rollers, and the mounting plate is placed on the rollers. The rolling action of the rollers can greatly reduce the friction of the mounting plate when it moves between the two types of trolleys, reduce the labor intensity of manually pushing and pulling the mold, and avoid wear on the contact surface between the mold and the trolley.

[0012] Preferably, the online mold-carrying trolley is equipped with a first limiting block for restricting the end of the mounting plate, and the online mold-dropping trolley is equipped with a second limiting block for restricting the end of the mounting plate. The limiting blocks accurately limit the parking position of the mounting plate on the trolley, ensuring accurate alignment between the locking component and the locking hole, while preventing excessive mold translation that could cause it to fall off.

[0013] Preferably, a mold changing station gantry support is installed on the outer side of the protective grid, directly opposite the mold changing area. An electric hoist is installed on the mold changing station gantry support. The electric hoist is used for the hoisting operation of the mold, replacing manual handling, reducing labor intensity and avoiding damage to the mold from bumps.

[0014] Compared with related technologies, the present invention provides the following beneficial effects: Significantly improved mold change efficiency: Through the integrated design of online automatic mold stopping, offline trolley turnover, and pre-installation testing at the mold change station, the downtime for mold change on the production line is greatly shortened, avoiding long waiting times on the production line and improving production efficiency.

[0015] Precise positioning and stable installation: The pin and positioning block are engaged and the guide rail is guided to ensure precise docking of the online and offline trolleys; the limit block limits the mold's translation position and the locking component ensures the mold is firmly fixed, effectively avoiding mold displacement or positioning deviation and ensuring the molding quality of the headrest product.

[0016] Reduced labor intensity and improved safety: The rollers reduce the friction of mold translation, and the electric hoist replaces manual handling of heavy objects, greatly reducing the labor intensity of operators; the protective grid provides safety protection, preventing personnel from contacting moving parts during mold changing, and reducing the risk of mold collision damage.

[0017] Enhanced production line flexibility: The mold changing station is equipped with multiple pre-installation stations, which can prepare multiple sets of molds of different specifications at the same time to meet the needs of multi-variety, small-batch production and improve the adaptability of the production line; centralized storage and functional pre-testing of molds further reduce the probability of production line failure and downtime.

[0018] Compact structure and high space utilization: The mold changing area and mold changing station are arranged nearby, and the ground track and guide track are rationally planned, which does not require a large amount of workshop space. Moreover, the mold turnover path is short, reducing site occupation and turnover costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged schematic diagram of region M in the middle; Figure 3 For the present invention Figure 1 Enlarged schematic diagram of region N in the middle; Figure 4 For the present invention Figure 1 Partial schematic diagram of the K-axis; Figure 5 For the present invention Figure 4 A partial schematic diagram of the B-direction; Figure 6 For the present invention Figure 1 A partial schematic diagram of direction A in the middle.

[0020] The diagram is labeled as follows: 1. Chain rotary conveyor line; 2. Chain; 3. On-line mold loading trolley; 4. Protective grid; 5. On-line mold unloading trolley; 6. Ground track; 7. Guide track; 8. Mold; 9. First locking assembly; 10. Second locking assembly; 11. Pin; 12. Positioning block; 13. Caster wheel; 14. Mounting plate; 15. Mold body; 16. Locking hole; 17. Wrench-type clamp; 18. Locking cylinder; 19. Roller; 20. First limit block; 21. Second limit block; 22. Mold changing station gantry support; 23. Electric hoist; 24. Guide wheel. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figures 1-6 A headrestling foaming line mold changing system has a reasonable overall structure and layout. Through the integrated design of online conveying, offline turnover and mold changing station assistance, it can realize the rapid and accurate mold changing.

[0023] Specifically, the chain rotary conveyor line 1 is the core conveying structure of the production line. Several online mold-carrying trolleys 3 are evenly distributed along its chain 2. These trolleys 3 move synchronously with the chain 2, carrying the molds 8 and completing the headrest foaming production process. A protective grid 4 surrounds the outer side of the chain rotary conveyor line 1 for safety protection. A designated area inside the protective grid 4, near the chain rotary conveyor line 1, is designated as a mold-changing area, providing dedicated space for mold-changing operations. An openable mold-changing door is located at the position of the protective grid 4 corresponding to the mold-changing area, facilitating the entry and exit of the offline mold-carrying trolleys 5.

[0024] The mold-changing area is equipped with a ground track 6 perpendicular to the running direction of the online mold-carrying trolley 3. A guide track 7, parallel to the online mold-carrying trolley 3, is fixed on the ground track 6. The entrance end of the guide track 7 is designed in a trumpet shape to facilitate the rapid and precise insertion and docking of the online mold-carrying trolley 5. The four corners of the bottom of the online mold-carrying trolley 5 are equipped with casters 13, and a guide wheel 24 is installed in the middle of the bottom. The guide wheel 24 rolls in cooperation with the guide track 7 to ensure that the online mold-carrying trolley 5 remains strictly parallel to the online mold-carrying trolley 3 when moving along the ground track 6.

[0025] The mold 8 consists of a mounting plate 14 and a mold body 15 fixed on the mounting plate 14. Locking holes 16 are provided on both sides of the mounting plate 14 for engagement with locking components. Several parallel rollers 19 are rotatably mounted on the top of both the online mold-carrying trolley 3 and the online mold-dropping trolley 5. The mounting plate 14 is placed on the rollers 19 and can move freely along the direction of the rollers 19, significantly reducing friction during mold transfer.

[0026] The online mold-carrying carriage 3 is equipped with a second locking component 10, specifically a locking cylinder 18 fixed to the end of the carriage. The output end of the locking cylinder 18 can be extended and inserted into the locking hole 16 of the mounting plate 14 to achieve automatic locking between the mold 8 and the online mold-carrying carriage 3. The online mold-dropping carriage 5 is equipped with a first locking component 9, specifically a wrench-type clamp 17 installed at the end of the carriage. The clamping end of the wrench-type clamp 17 can be manually inserted into the locking hole 16 and locked to achieve fixation between the mold 8 and the online mold-dropping carriage 5. In addition, the end of the online mold-carrying carriage 3 is equipped with a first limiting block 20, and the end of the online mold-dropping carriage 5 is equipped with a second limiting block 21. When the mounting plate 14 moves to the limiting block, it stops moving to ensure precise alignment between the locking hole 16 and the locking component.

[0027] The online mold-laying carriage 5 has a retractable pin 11 on one side, and the online mold-laying carriage 3 has a positioning block 12 at the corresponding position. The positioning block 12 has a hole that matches the pin 11. When the online mold-laying carriage 5 and the online mold-laying carriage 3 are docked, the pin 11 can be inserted to achieve precise positioning of the two, avoiding docking deviation that would cause difficulty in mold translation.

[0028] A mold-changing station is located on the outer side of the protective grid 4, directly opposite the mold-changing area. The mold-changing station includes a gantry support 22 and an electric hoist 23 mounted on the gantry support 22. The electric hoist 23 is used for hoisting and transporting the molds. The mold-changing station has multiple workstations and can simultaneously accommodate multiple online mold-changing trolleys 5, facilitating the pre-installation and positioning of new molds. The mold-changing station is also equipped with an electrical control and testing system, which can perform functional tests on the new molds pre-installed on the trolleys to ensure that the molds can be put into use directly after being put into operation.

[0029] The specific operating procedure of this mold changing system is as follows: Automatic mold stop and alignment: When the production line needs to change molds, the electrical control system issues a command, the chain rotary conveyor line 1 stops running, and the mold trolley 3 that needs to change molds 8 is accurately parked in the mold changing area. Then the mold changing door of the protective grid 4 opens automatically.

[0030] Disassembly and transportation of old molds: An empty online mold-loading trolley 5 is manually pushed and moved to the ground track 6 in the mold-changing area via the casters 13. It is then guided along the funnel-shaped inlet to the guide track 7 and pushed until it fits against the online mold-loading trolley 3. Manually insert the pin 11 on the online loading mold trolley 5 into the positioning block 12 of the online loading mold trolley 3 to complete the precise positioning of the two; The locking cylinder 18 on the online model trolley 3 of the electric control system is unlocked, and its output end retracts from the locking hole 16 of the mounting plate 14. The mounting plate 14 of the mold 8 is manually pushed, and under the rolling action of the roller 19, the mold body 15 and the mounting plate 14 are moved from the online mold loading trolley 3 to the online mold unloading trolley 5 until the end of the mounting plate 14 contacts the second limiting block 21. Manually operate the wrench-type clamp 17, insert its clamping end into the locking hole 16 of the mounting plate 14 and lock it to prevent the mold 8 from shifting on the trolley; Pull out pin 11, push the mold-changing trolley 5 loaded with the old mold out of the mold-changing area along the ground track 6, and move it to the buffer station for temporary parking.

[0031] New molds installed and put into operation: Manually push another online mold-loading trolley 5, pre-loaded with a new mold, along the ground track 6 and guide track 7 to the mold-changing area, where it fits into the online mold-loading trolley 3, and inserts the pin 11 to complete the positioning. Manually loosen the wrench-type clamp 17 to release the new mold from the online mold carriage 5; The mounting plate 14 of the new mold is manually pushed and moved horizontally onto the mold-carrying trolley 3 on the line under the action of the roller 19 until the end of the mounting plate 14 contacts the first limiting block 20; The electronic control system controls the locking cylinder 18 to start, and its output end extends and inserts into the locking hole 16 to lock the new mold onto the online mold-carrying trolley 3. Pull out pin 11 and push the empty download module trolley 5 out of the module replacement area.

[0032] Production line resumes operation: The mold changing door of the protective grid 4 is closed, the electrical control system issues a command, the chain rotary conveyor line 1 resumes operation, and the online mold-carrying trolley 3 with the new mold enters the production process.

[0033] Mold turnover and pre-assembly: The old molds loaded on the buffer station are manually pushed to the mold changing station by the mold trolley 5, and the old molds are lifted off the trolley by the electric hoist 23 and stored in the mold rack. At an idle workstation in the mold changing station, the new mold to be replaced is hoisted onto the empty mold-down trolley 5 on the line using electric hoist 23, and the installation and positioning are completed. The electrical control and testing system at the mold changing station is used to test the functionality of the new mold, ensuring that it meets production requirements and preparing for subsequent mold changes on the production line.

[0034] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A headrest foaming line mold changing system, comprising a chain rotary conveyor line (1), wherein a plurality of online mold-carrying trolleys (3) are mounted on the chain (2) of the chain rotary conveyor line (1), and a protective grid (4) is provided on the outer side of the chain rotary conveyor line (1), characterized in that, The protective grid (4) has a film changing area near the chain rotary conveyor line (1) on its inner side. The protective grid (4) has several line-down mold trolleys (5) on its outer side. The film changing area has a ground track (6) for the line-down mold trolleys (5) to pass through. The ground track (6) has a guide track (7) fixed on it to keep the line-down mold trolleys (5) and the line-up mold trolleys (3) parallel. Molds (8) are slidably installed on both the line-down mold trolleys (5) and the line-up mold trolleys (3). The molds (8) are connected to the line-up mold trolleys (3) through a second locking component (10). The molds (8) are connected to the line-down mold trolleys (5) through a first locking component (9).

2. The headrest foaming line changing system according to claim 1, characterized in that, The online loading mold trolley (5) is provided with a pin (11), and the online loading mold trolley (3) is provided with a positioning block (12) that is engaged with the pin (11).

3. The headrest foaming line changing system according to claim 1, characterized in that, The bottom of the line-fed model trolley (5) is equipped with casters (13) at all four corners. The bottom of the line-fed model trolley (5) is equipped with guide wheels (24) that cooperate with the guide rail (7). The entrance of the guide rail (7) is horn-shaped.

4. The headrest foaming line mold changing system according to claim 1, characterized in that, The mold (8) includes a mounting plate (14) and a mold body (15) fixed on the mounting plate (14), and the mounting plate (14) is provided with locking holes (16).

5. The headrest foaming line changing system according to claim 4, characterized in that, The second locking component (10) includes a wrench-type clamp (17), which is installed on the online die trolley (5). The clamping end of the wrench-type clamp (17) is inserted into the locking hole (16).

6. The headrest foaming line mold changing system according to claim 2, characterized in that, The second locking assembly (9) includes a locking cylinder (18) fixed on the online mold trolley (3), the output end of which engages with the locking hole (16).

7. The headrest foaming line changing system according to claim 4, characterized in that, Both the online mold-loading trolley (5) and the online mold-loading trolley (3) are equipped with rollers (19), and the mounting plate (14) is mounted on the rollers (19).

8. The headrest foaming line mold changing system according to claim 4, characterized in that, The online mold-carrying trolley (3) is equipped with a first limiting block (20) for limiting the end of the mounting plate (14), and the online mold-downloading trolley (5) is equipped with a second limiting block (21) for limiting the end of the mounting plate (14).

9. The headrest foaming line changing system according to claim 1, characterized in that, A gantry bracket (22) for changing molds is installed on the outside of the protective grid (4) directly opposite the mold-changing trolley (5), and an electric hoist (23) is installed on the gantry bracket (22).

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