A new type of air bag lifting mechanism of electric mold frame

Abstract

The utility model relates to a kind of air bag lifting mechanism of novel electric mould frame, including upper mould frame, the upper mould frame middle part is vertically symmetrical fixed along its short axis respectively and is inserted with guide sleeve, two the guide sleeve respectively axial sliding is equipped with guide pillar, two the guide pillar bottom end is connected with the upper mould plate that is compatible with the bottom surface of upper mould frame, and its top end is connected with the limiting plate jointly vertically;The bottom surface of upper mould frame is fixed and arranged with multiple air bags that can be inflated and deflated.This air bag lifting mechanism of the utility model can realize uniform and stable pressure distribution, significantly improve the quality of edge covering, provide effective buffer and overload protection, and prolong the service life of mould.

Description

Technical Field

[0001] This utility model belongs to the field of electric formwork technology, and specifically relates to a novel airbag lifting mechanism for electric formwork. Background Technology

[0002] Currently, the edging of automotive sunroofs is usually automated using an electric mold frame. This electric mold frame consists of an upper mold frame and a lower mold frame. The upper mold frame is raised and lowered and rotated by an upper mold lifting drive mechanism and an upper mold flipping drive mechanism, while the lower mold frame is flipped by a lower mold flipping drive mechanism, resulting in a high degree of automation.

[0003] The electric mold frame edge-wrapping operation involves placing the car sunroof glass and its bracket into the corresponding mold, which is then fixed on the upper and lower mold frames. The upper and lower mold frames are then closed together, and then an external foaming machine is used to apply foam adhesive to the ends of the car sunroof glass and its bracket to form an integral edge-wrapping.

[0004] When the upper and lower mold frames of the existing electric mold frame are closed, the pressing stability is poor due to the use of rigid pressing. This may affect the edge binding quality and may also damage the mold during the pressing process. Utility Model Content

[0005] The purpose of this utility model is to overcome one of the problems existing in the prior art and to provide a novel airbag lifting mechanism for electric mold frames. The specific technical solution is as follows: This utility model provides a novel airbag lifting mechanism for an electric mold frame, including an upper mold frame. Guide sleeves are symmetrically and perpendicularly fixedly connected to the middle of the upper mold frame along its short axis. Guide posts are axially slidably inserted through the two guide sleeves. The bottom ends of the two guide posts are vertically connected to an upper template adapted to the bottom surface of the upper mold frame, and the top ends are vertically connected to a limit plate. Multiple airbags that can be inflated and deflated are fixedly arranged on the bottom surface of the upper mold frame.

[0006] As a preferred embodiment of this utility model, the number of airbags is four, and the four airbags are arranged symmetrically in pairs along the long axis of the upper mold frame, and the length of the airbags is adapted to the length of the upper mold frame.

[0007] As a preferred technical solution of this utility model, the air supply flow of the four airbags is controlled by the same electric proportional valve set on the top surface of the upper mold frame.

[0008] As a preferred technical solution of this utility model, the four airbags are independently controlled to exhaust air through quick exhaust valves set on the top surface of the upper mold frame, and the four quick exhaust valves are arranged along the short axis of the upper mold frame.

[0009] As a preferred technical solution of this utility model, the quick-release valve is detachably supported and connected to the top surface of the upper mold frame by a Z-shaped bracket.

[0010] As a preferred technical solution of this utility model, a self-lubricating bearing is axially embedded in the inner wall of the guide sleeve, and the self-lubricating bearing is axially slidably connected to the corresponding guide post.

[0011] As a preferred embodiment of this utility model, an L-shaped signal frame is detachably provided on the top surface of the upper mold frame, and a sensor for detecting the position of the upper mold plate is installed on the signal frame.

[0012] The beneficial effects of this utility model are: 1. The airbag lifting mechanism of this utility model can achieve a uniform and stable pressure distribution, significantly improving the edge binding quality; through the pressure equalization effect of the airbag, it ensures that the foam is formed under uniform pressure, thereby effectively improving the sealing performance, aesthetics and overall quality of the edge binding.

[0013] During the mold closing process, once the upper mold frame is pressed down until the upper template contacts the mold, the airbag continues to inflate. As a flexible pressure source, the airbag simultaneously and evenly applies pressure to the entire upper template, ensuring that the compressive force on all parts of the workpiece in the mold is consistent.

[0014] 2. The airbag lifting mechanism of this utility model provides effective buffering and overload protection, extending the service life of the mold; the flexible characteristics of the airbag, as well as the guiding structure composed of guide pillars and guide sleeves, greatly reduce the impact and potential overload risk during the mold closing process, playing a dual role in protecting the mold and the product, thereby extending the service life of the equipment and reducing maintenance costs.

[0015] Because the airbag itself has a buffering and vibration-absorbing function, even if there are slight deviations in the mold closing speed or position control, the compression deformation of the airbag can absorb the impact energy, avoiding damage to the mold and workpiece caused by rigid collisions. At the same time, the pressure of the airbag has a physical upper limit, which is equivalent to a built-in overload protection mechanism to prevent the pressure from increasing indefinitely due to system failure and damaging expensive molds or workpieces. Attached Figure Description

[0016] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown; Figure 2 A top view of the structure of this utility model is shown; Figure 3 It shows Figure 2 Structural cross-sectional view along the AA direction; Figure 4 The main structural view of this utility model is shown; Figure 5A schematic diagram of the present invention assembled on an electric mold frame is shown.

[0017] The following components are shown in the figure: 1. Upper mold frame; 2. Guide sleeve; 21. Self-lubricating bearing; 3. Guide post; 31. Limiting plate; 4. Upper template; 5. Airbag; 51. Electric proportional valve; 52. Quick exhaust valve; 521. Bracket; 6. Signal frame; 7. Lower mold frame; 71. Lower template. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0019] Example To address the technical problems in the background section, a novel airbag lifting mechanism for an electric mold frame is provided as follows: Combination Figures 1-5 As shown, a novel airbag lifting mechanism for an electric mold frame includes an upper mold frame 1. Guide sleeves 2 are symmetrically and vertically fixedly connected to the middle of the upper mold frame 1 along its short axis. Guide posts 3 are axially slidably inserted through the two guide sleeves 2. The bottom ends of the two guide posts 3 are vertically connected to an upper template 4 that is adapted to the bottom surface of the upper mold frame 1. The top ends of the templates 4 are vertically connected to a limiting plate 31. Multiple airbags 5 that can be inflated and deflated are fixedly arranged on the bottom surface of the upper mold frame 1.

[0020] In the above technical solution, the airbag lifting mechanism can achieve a uniform and stable pressure distribution, significantly improving the edge binding quality; through the pressure equalization effect of the airbag 5, it ensures that the foam is formed under uniform pressure, thereby effectively improving the sealing performance, aesthetics and overall quality of the edge binding.

[0021] During the mold closing process, after the upper mold frame 1 is pressed down until the upper template 4 contacts the mold, the airbag 5 continues to be inflated. As a flexible pressure source, the airbag 5 applies pressure to the entire upper template 4 simultaneously and evenly, ensuring that the compressive force on all parts of the workpiece in the mold is consistent.

[0022] The airbag lifting mechanism provides effective cushioning and overload protection, extending the service life of the mold. The flexible characteristics of the airbag 5, as well as the guiding structure composed of the guide post 3 and the guide sleeve 2, greatly reduce the impact and potential overload risk during the mold closing process, playing a dual role in protecting the mold and the product, thereby extending the service life of the equipment and reducing maintenance costs.

[0023] Because airbag 5 itself has a buffering and vibration-absorbing function, even if there is a slight deviation in the mold closing speed or position control, the compression deformation of airbag 5 can absorb the impact energy and avoid damage to the mold and workpiece caused by rigid collision. At the same time, the pressure of airbag 5 has a physical upper limit, which is equivalent to a built-in overload protection mechanism to prevent the pressure from increasing indefinitely due to system failure and damaging expensive molds or workpieces.

[0024] The limiting plate 31 can prevent the two guide posts 3 and the upper template 4 from falling off.

[0025] In addition, in the above technical solution, the airbag 5 can also be placed between the lower mold frame and the lower template; however, by placing the airbag 5 on top, when the upper mold frame 1 and the lower mold frame 7 are closed, the upper template 4 will automatically press down under the action of gravity, and the pressure generated by the airbag 5 will not require a loss of force to push the lower template 71 to move upward as when the airbag 5 is placed on the bottom, so that the upper mold frame 1 and the lower mold frame 7 can be closed more tightly.

[0026] like Figure 1 and Figure 2 As shown, there are four airbags 5, and the four airbags 5 are arranged symmetrically in pairs along the long axis of the upper mold frame 1. The length of the airbags 5 is adapted to the length of the upper mold template 4.

[0027] In the above technical solution, the four airbags 5 are symmetrically arranged along the long axis of the upper mold frame 1, which is equivalent to establishing four stable and symmetrical support or force application points in the length direction of the upper mold frame 1 where bending deformation is most likely to occur. This layout can provide optimal support for the upper mold plate 4, effectively prevent the upper mold plate 4 from undergoing micro-deformation due to insufficient pressure in the middle, and ensure the consistency of pressure along its length direction for the automotive sunroof workpiece in the mold during mold closing.

[0028] The length of the airbag 5 is matched with the length of the upper template 4, so that the airbag 5 can cover most of the support area of ​​the upper template 4. This avoids the point pressure problem that may be caused by using a small area airbag 5, and forms a uniform pressure field that is close to surface contact, further ensuring the overall uniformity of the edge-wrapping foaming process.

[0029] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the four airbags 5 are controlled by the same electric proportional valve 51 located on the top surface of the upper mold frame 1.

[0030] In the above technical solution, using a single electric proportional valve 51 to supply air to all four airbags 5 ensures that the inflation rate and pressure build-up process of all airbags 5 are synchronized and consistent. The electric control characteristics of the electric proportional valve 51 make the mold closing pressure build-up process smooth, controllable, and repeatable, which is beneficial for process standardization.

[0031] like Figures 1-5 As shown, the four airbags 5 are independently controlled to exhaust air through quick exhaust valves 52 set on the top surface of the upper mold frame 1, and the four quick exhaust valves 52 are arranged along the short axis of the upper mold frame 1.

[0032] In the above technical solution, each airbag 5 is equipped with an independent quick-release valve 52, achieving independent and high-speed exhaust. After the edge is finished, the quick-release valve 52 can quickly discharge the gas inside the airbag 5, allowing the upper mold plate 4 to retract rapidly, significantly shortening the production cycle and improving efficiency. Simultaneously, in emergency situations, the quick-release valve 52 can immediately activate, quickly releasing all pressure and enabling rapid mold opening, thus enhancing equipment safety.

[0033] like Figure 1 As shown, the quick-release valve 52 is detachably supported and connected to the top surface of the upper mold frame 1 by a Z-shaped bracket 521.

[0034] In the above technical solution, the Z-shaped bracket 521 can stably support the quick-release valve 52 on the top surface of the upper mold frame 1. The bracket 521 is detachably connected to the upper mold frame 1, which makes the installation, replacement or maintenance of the quick-release valve 52 convenient.

[0035] like Figure 3 As shown, a self-lubricating bearing 21 is axially embedded in the inner wall of the guide sleeve 2, and the self-lubricating bearing 21 is axially slidably connected to the corresponding guide post 3.

[0036] In the above technical solution, the self-lubricating bearing 21 provides low-friction, high-precision motion guidance for the guide column 3. This ensures that the upper template 4 moves smoothly and without jamming during the lifting process, preventing deflection or shaking.

[0037] In automated production environments, this mechanism requires frequent movement. The self-lubricating bearing 21 eliminates the need for additional lubrication, avoiding the risk of oil contamination of workpieces and the production environment, while also reducing daily maintenance workload and ensuring the long-term reliability of the equipment.

[0038] like Figure 1 and Figure 4 As shown, an L-shaped signal frame 6 is detachably provided on the top surface of the upper mold frame 1, and a sensor for detecting the position of the upper mold plate 4 is installed on the signal frame 6.

[0039] In the above technical solution, the sensor detects the extreme positions of the upper mold plate 4 and provides a confirmation signal to the control system that the mold is in place. Only after receiving this signal will the system allow the next critical process (such as injecting expanding foam) to begin. This effectively prevents the accidental injection of expanding foam when the mold is not closed or not closed in place, thereby avoiding production waste and equipment contamination. By ensuring that each pressing is performed at the same preset position, the consistency of the edge-wrapping process conditions for each product is guaranteed, thus stabilizing product quality.

[0040] The signal frame 6 adopts an L-shaped and detachable design, which allows the sensor installation position to be flexibly adjusted and optimized according to the requirements of different molds or products, enhancing the versatility and adaptability of the entire mechanism.

[0041] Working principle and usage process of this utility model: In use, the working process of this airbag lifting mechanism begins with the upper and lower mold frames rotating and descending to the mold-closing position under the drive of their respective drive mechanisms. Subsequently, its core working process is as follows: First, there is the flexible mold closing and pressure building stage. The control system sends a command to the electric proportional valve 51, which inflates the four airbags 5 synchronously and proportionally. The inflated airbags 5 push the upper mold plate 4 downward, allowing it to smoothly descend along the guide path formed by the guide post 3 and the guide sleeve 2. The self-lubricating bearing 21 ensures low friction and no jamming during this process. The upper mold plate 4 is evenly pressed against the mold containing the workpiece located on the lower mold base 7. As inflation continues, the pressure inside the airbags 5 increases linearly, providing a continuous, stable, and evenly distributed pressing force to the upper mold plate 4.

[0042] Secondly, there is the safety interlock and process execution stage. When the upper template 4 descends to the preset mold closing position under the pressure of the airbag 5, the sensor installed on the signal frame 6 is triggered, generating an upper template arrival signal. This signal is fed back to the control system, forming a safety interlock. Only after confirming receipt of this signal will the control system allow subsequent peripheral equipment to start, beginning the injection of expanding foam into the sunroof end.

[0043] Finally, there is the rapid mold opening and resetting stage. After the edge-wrapping foaming process is completed, the control system issues a command, the electric proportional valve 51 stops supplying air, and at the same time, the four independent quick-release valves 52 quickly actuate, expelling the compressed air from the corresponding airbags 5 at high speed. The upper mold plate 4 quickly separates from the workpiece, completing one work cycle and preparing for the next production cycle.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel airbag lifting mechanism for an electric mold frame, comprising an upper mold frame (1), characterized in that: The upper mold frame (1) is vertically and symmetrically fixedly connected to guide sleeves (2) along its short axis. Guide posts (3) are axially slidably inserted in the two guide sleeves (2). The bottom ends of the two guide posts (3) are vertically connected to an upper template (4) that is adapted to the bottom surface of the upper mold frame (1). The top ends of the templates are vertically connected to a limiting plate (31). Multiple airbags (5) that can be inflated and deflated are fixedly arranged on the bottom surface of the upper mold frame (1).

2. The airbag lifting mechanism for a novel electric mold frame according to claim 1, characterized in that: The number of airbags (5) is four, and the four airbags (5) are arranged symmetrically in pairs along the long axis of the upper mold frame (1). The length of the airbags (5) is adapted to the length of the upper template (4).

3. The airbag lifting mechanism for a novel electric mold frame according to claim 2, characterized in that: The air supply flow of the four airbags (5) is controlled by the same electric proportional valve (51) located on the top surface of the upper mold frame (1).

4. The airbag lifting mechanism for a novel electric mold frame according to claim 2, characterized in that: The four airbags (5) are independently controlled to exhaust air through quick exhaust valves (52) set on the top surface of the upper mold frame (1), and the four quick exhaust valves (52) are arranged along the short axis of the upper mold frame (1).

5. The airbag lifting mechanism for a novel electric mold frame according to claim 4, characterized in that: The quick-release valve (52) is detachably supported and connected to the top surface of the upper mold frame (1) by a bracket (521) with a Z-shaped structure.

6. The airbag lifting mechanism for a novel electric mold frame according to claim 1, characterized in that: The inner wall of the guide sleeve (2) is axially embedded with a self-lubricating bearing (21), and the self-lubricating bearing (21) is axially slidably connected to the corresponding guide post (3).

7. The airbag lifting mechanism for a novel electric mold frame according to any one of claims 1 to 6, characterized in that: The top surface of the upper mold frame (1) is detachably provided with an L-shaped signal frame (6), and a sensor for detecting the position of the upper mold template (4) is installed on the signal frame (6).

Images