Anti-rebound dimple forming device for degradable composite material
The anti-rebound molding device with multi-level elastic support and closed-loop control solves the problem of springback in the molding process of biodegradable composite materials, thereby improving the dimensional accuracy of workpieces and increasing production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN HAITIANXIN PACKAGING & PRINTING CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-08-04
AI Technical Summary
In the process of grooving and shaping biodegradable composite materials, existing equipment cannot effectively solve the springback phenomenon, which makes it difficult to guarantee the dimensional accuracy of the workpiece, increases production costs and reduces production efficiency.
A pressing and shaping device including an anti-rebound mechanism was designed. Through a multi-stage elastic support structure and closed-loop control of a pressure sensor and controller, the rebound stress of the biodegradable composite material at different deformation stages is precisely matched. Combined with a heating mechanism and a damping structure, the pressing force is ensured to accurately match the material properties, avoiding errors caused by manual adjustment.
It effectively suppresses the springback of biodegradable composite materials, improves workpiece dimensional consistency and molding accuracy, reduces production costs, extends the service life of the device, and is suitable for materials with high elastic modulus.
Smart Images
Figure CN224588677U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of biodegradable composite material processing technology, specifically to a springback-resistant pressure groove shaping device for biodegradable composite materials. Background Technology
[0002] Biodegradable composite materials refer to materials with specific properties, which are made by combining biodegradable polymers with one or more other materials through physical, chemical, or biological methods. Their core advantage lies in the fact that after use and disposal, they can degrade in the natural environment (such as soil, water, etc.) or under specific conditions (such as composting), through the action of microorganisms (such as bacteria, fungi, etc.), and eventually decompose into carbon dioxide, water, and other harmless substances, without causing long-term pollution to the environment.
[0003] In the processing of biodegradable composite materials, grooving is a common process. However, due to the inherent properties of biodegradable composite materials, springback often occurs during grooving. This problem makes it difficult to guarantee the dimensional accuracy of the grooved workpiece, seriously affecting product quality and subsequent use. Existing grooving devices often cannot effectively solve the springback problem when processing biodegradable composite materials, requiring multiple processing steps, which not only increases production costs but also reduces production efficiency. Therefore, this paper proposes an anti-springback grooving device for biodegradable composite materials. Utility Model Content
[0004] To address the shortcomings of existing technologies, this application provides a springback-resistant groove shaping device for biodegradable composite materials, which has the characteristic of accurately matching the springback stress of biodegradable composite materials at different deformation stages and reducing the springback rate.
[0005] To achieve the above objectives, this application provides the following technical solution: a spring-resistant groove-setting device for biodegradable composite materials, comprising a spring-resistant mechanism and a base. The spring-resistant mechanism passes through the upper surface of the base, a support frame is fixedly connected to the upper surface of the base, and an electric push rod is fixedly connected to the upper surface of the support frame. The output end of the electric push rod is movably connected inside the support frame, and a groove-setting mechanism is fixedly connected to the lower end of the electric push rod. The spring-resistant mechanism includes a housing, which passes through the upper surface of the base. A movable chamber is formed inside the housing, and a baffle is movably connected inside the movable chamber. A connecting rod is fixedly connected to the upper surface of the baffle, and the upper end of the connecting rod is movably connected to... On the upper surface of the housing, a pressure plate is fixedly connected to the upper end of the connecting rod. A first spring is sleeved on the surface of the connecting rod. The upper end of the first spring is fixedly connected to the upper end of the movable chamber. The lower end of the first spring is fixedly connected to the upper surface of the baffle. A telescopic rod and a second spring are fixedly connected to the lower surface of the baffle. The second spring is sleeved on the surface of the telescopic rod. The upper end of the second spring is fixedly connected to the lower surface of the baffle. The lower end of the second spring is fixedly connected to the lower surface of the movable chamber. A pressure sensor is installed inside the grooving mechanism to detect the pressure value during the grooving process. A controller is installed on the front side of the base. The controller is electrically connected to the electric push rod and the pressure sensor.
[0006] The above scheme clarifies that the device consists of core components such as an anti-rebound mechanism, a base, a support frame, an electric push rod, and a grooving mechanism, constructing a complete "pressing-supporting-control" technical solution that covers the entire process requirements for grooving and shaping of biodegradable composite materials. Through the combination of the shell, movable chamber, baffle, connecting rod, first spring, telescopic rod, and second spring, a "multi-level elastic support" structure is formed. Unlike traditional single-spring support, it can automatically adjust the reverse pressure according to the material deformation, effectively suppressing rebound. The grooving mechanism has a built-in pressure sensor that is linked with the controller to achieve closed-loop control of "pressure detection-feedback adjustment," ensuring that the pressing force is accurately matched to the material characteristics and avoiding errors from manual adjustment.
[0007] Furthermore, multiple sets of the connecting rod, the first spring, the telescopic rod, and the second spring are provided and are evenly distributed on the upper and lower surfaces of the baffle.
[0008] Through the above scheme, multiple sets of evenly distributed connecting rods, first springs, telescopic rods and second springs ensure that the pressure plate is subjected to balanced forces during the pressing process, preventing material deformation or groove deviation caused by insufficient local support, improving the consistency of workpiece dimensions, and the coordinated work of multiple elastic elements can disperse the pressing force load, reduce the risk of overload of a single element, and extend the service life of the device.
[0009] Furthermore, a groove is provided on the upper surface of the pressure plate, and a heating mechanism is provided inside the pressure plate for heating the biodegradable composite material.
[0010] Through the above scheme, the heating mechanism inside the pressure plate can soften biodegradable composite materials and reduce their elastic modulus. Combined with the protrusion forming of the groove and pressing mechanism, it reduces the tendency of springback during pressing. It is especially suitable for materials with high elastic modulus such as PLA and PBAT. The heating temperature can be flexibly adjusted according to the material type, thus broadening the application scenarios of the device.
[0011] Furthermore, damping columns are fixedly connected to both the left and right sides of the baffle, and a slider is fixedly connected to the end of the damping column away from the baffle. A sliding groove is opened inside the movable compartment, and the slider is slidably connected inside the sliding groove.
[0012] Through the above scheme, the sliding damping of the damping column and the slider in the groove can absorb the mechanical vibration when the electric push rod is pressed down, avoid the local stress concentration of the material caused by vibration, make the edge of the groove smoother, and further improve the dimensional accuracy. The damping structure can reduce the impact of the baffle movement, ensure the smooth pressing process of the pressure plate, and avoid material damage caused by sudden force.
[0013] Furthermore, a buffer is fixedly connected to the upper surface of the housing, and the upper end of the buffer is fixedly connected to the lower surface of the pressure plate.
[0014] Through the above scheme, the buffer on the shell provides flexible support when the pressure plate is reset, reducing the rigid impact when the first spring and the second spring rebound, preventing cracks or deformation on the surface of the degradable composite material due to demolding impact, and the buffer can reduce the instantaneous force on the spring and connecting rod, reducing fatigue damage.
[0015] Furthermore, a sliding rod is fixedly connected to the upper surface of the grooving mechanism, and the sliding rod is slidably connected to the upper surface of the support frame.
[0016] Through the above scheme, the sliding cooperation between the slide bar and the support frame provides guidance for the grooving mechanism, ensuring that it presses down vertically, avoiding groove deviation caused by tilting, and ensuring molding accuracy.
[0017] Furthermore, both the bottom tip of the groove and the bottom protrusion tip of the pressing mechanism are provided with rounded corners.
[0018] The above scheme, with the rounded corner design of the groove and the protrusion tip of the pressing mechanism, can reduce the friction between the material and the sharp edge of the mold during pressing, prevent scratches and tears on the material surface, and at the same time make the groove edge transition smoothly, avoiding springback caused by stress concentration. The rounded corner structure reduces the friction between the material and the mold, making it easier to demold and reducing secondary deformation when the workpiece is taken out.
[0019] Furthermore, both the first and second springs are made of stainless steel, and a base is provided at the lower end of the base.
[0020] The above solution uses stainless steel for both the first and second springs, which can resist corrosion from acidic gases that may be generated during the processing of biodegradable composite materials, ensuring that the elasticity of the springs is minimized after long-term use.
[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0022] The anti-rebound molding device for this biodegradable composite material uses a two-stage elastic buffer formed by a first and a second spring within the housing. When the molding mechanism presses down, the first spring provides initial reverse support force. As the pressing depth increases, the second spring, in conjunction with the telescopic rod, gradually increases the support force. This variable stiffness support can precisely match the rebound stress of the biodegradable composite material at different deformation stages, reducing the rebound rate. The damping columns on both sides of the baffle, along with the sliding block within the groove, absorb vibration energy during the pressing process, preventing localized stress concentration caused by vibration and improving the molding quality. The groove and molding mechanism... The protrusions work together to form a molding space, and the rounded corners at the bottom tip reduce material flow resistance and prevent scratches during pressing. At the same time, they make the groove edges transition smoothly, further enhancing the anti-rebound effect. The heating mechanism inside the pressure plate softens the biodegradable composite material and reduces its elasticity. The pressure sensor and controller inside the pressing mechanism work together to adjust the heating state according to real-time pressure data, so that the material is molded in the best plastic state, reducing the accumulation of internal stress. The buffer on the upper surface of the shell provides flexible support when the pressure plate is pressed, avoiding the rigid impact of the spring during initial compression and protecting the surface of the biodegradable composite material from damage. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure in frontal three-dimensional cross-section of this application;
[0024] Figure 2 This is a three-dimensional structural diagram of the present application.
[0025] Figure 3 This is a cross-sectional structural schematic diagram of the anti-rebound mechanism of this application;
[0026] Figure 4 for Figure 3 Schematic diagram of the structure at point A;
[0027] Figure 5 for Figure 3 A schematic diagram of the structure at point B.
[0028] In the picture:
[0029] 1. Anti-rebound mechanism; 101. Housing; 102. Movable compartment; 103. Baffle; 104. Connecting rod; 105. Pressure plate; 106. Groove; 107. First spring; 108. Telescopic rod; 109. Slide groove; 110. Damping column; 111. Slider; 112. Buffer; 113. Rounded corner; 114. Second spring; 2. Base; 3. Electric push rod; 4. Groove pressing mechanism; 5. Slide rod; 6. Support frame; 7. Base; 8. Controller. Detailed Implementation
[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0031] Please see Figure 1 , Figure 2 and Figure 3The anti-rebound molding device for biodegradable composite materials in this embodiment includes an anti-rebound mechanism 1 and a base 2. The anti-rebound mechanism 1 is mounted on the upper surface of the base 2. A support frame 6 is fixedly connected to the upper surface of the base 2. An electric push rod 3 is fixedly connected to the upper surface of the support frame 6. The output end of the electric push rod 3 is movably connected inside the support frame 6. A molding mechanism 4 is fixedly connected to the lower end of the electric push rod 3. The anti-rebound mechanism 1 includes a housing 101, which is mounted on the upper surface of the base 2. A movable chamber 102 is opened inside the housing 101. A baffle 103 is movably connected, and a connecting rod 104 is fixedly connected to the upper surface of the baffle 103. The upper end of the connecting rod 104 is movably connected to the upper surface of the housing 101. A pressure plate 105 is fixedly connected to the upper end of the connecting rod 104. A first spring 107 is sleeved on the surface of the connecting rod 104. The upper end of the first spring 107 is fixedly connected to the upper end of the movable compartment 102. The lower end of the first spring 107 is fixedly connected to the upper surface of the baffle 103. A telescopic rod 108 and a second spring 114 are fixedly connected to the lower surface of the baffle 103. The second spring 114 is sleeved on the telescopic rod 108. On surface 08, the upper end of the second spring 114 is fixedly connected to the lower surface of the baffle 103, and the lower end of the second spring 114 is fixedly connected to the lower surface inside the movable chamber 102. A pressure sensor is installed inside the grooving mechanism 4 to detect the pressure value during the grooving process. A controller 8 is installed on the front side of the base 2, and the controller 8 is electrically connected to the electric push rod 3 and the pressure sensor. The device consists of core components such as the anti-rebound mechanism 1, base 2, support frame 6, electric push rod 3, and grooving mechanism 4, constructing a complete technical solution of "pressing-supporting-control," covering... The entire process of grooving and shaping biodegradable composite materials is achieved through a combination of housing 101, movable chamber 102, baffle 103, connecting rod 104, first spring 107, telescopic rod 108, and second spring 114, forming a "multi-level elastic support" structure. Unlike traditional single spring support, this structure can automatically adjust the reverse pressure according to material deformation, effectively suppressing rebound. The grooving mechanism 4 has a built-in pressure sensor that is linked with the controller 8 to achieve closed-loop control of "pressure detection-feedback adjustment," ensuring that the pressing force is accurately matched to the material characteristics and avoiding errors caused by manual adjustment.
[0032] Please see Figure 1 , Figure 3 and Figure 4Multiple sets of connecting rods 104, first springs 107, telescopic rods 108, and second springs 114 are evenly distributed on the upper and lower surfaces of the baffle 103. A groove 106 is formed on the upper surface of the pressure plate 105, which contains a heating mechanism for heating the biodegradable composite material. Damping columns 110 are fixedly connected to both sides of the baffle 103, with a slider 111 fixedly connected to the end of the damping column 110 away from the baffle 103. A sliding groove 109 is formed inside the movable chamber 102, and the slider 111 is slidably connected inside the sliding groove 109. The multiple evenly distributed sets of connecting rods 104, first springs 107, telescopic rods 108, and second springs 114 ensure that the pressure plate 105 is subjected to balanced forces during pressing, preventing material deformation or groove deviation due to insufficient local support, and improving the consistency of workpiece dimensions. The multi-level elastic elements work together to disperse the pressing force load, reduce the risk of overload of a single element, and extend the service life of the device. The heating mechanism inside the pressure plate 105 can soften the biodegradable composite material and reduce its elastic modulus. Combined with the protrusion forming of the groove 106 and the pressing groove mechanism 4, it reduces the tendency of springback during pressing. It is especially suitable for materials with high elastic modulus such as PLA and PBAT. The heating temperature can be flexibly adjusted according to the material type, which broadens the application scenarios of the device. The sliding damping of the damping column 110 and the slider 111 in the sliding groove 109 can absorb the mechanical vibration when the electric push rod 3 is pressed down, avoid the local stress concentration of the material caused by vibration, make the edge of the pressing groove smoother, and further improve the dimensional accuracy. The damping structure can reduce the impact of the movement of the baffle 103, ensure the smooth pressing process of the pressure plate 105, and avoid material damage caused by sudden force.
[0033] Please see Figure 1 , Figure 4 and Figure 5A buffer 112 is fixedly connected to the upper surface of the housing 101. The upper end of the buffer 112 is fixedly connected to the lower surface of the pressure plate 105. A slide rod 5 is fixedly connected to the upper surface of the pressing mechanism 4. The slide rod 5 and the upper surface of the support frame 6 are slidably connected. The bottom tip of the groove 106 and the bottom protrusion tip of the pressing mechanism 4 are both provided with rounded corners 113. The first spring 107 and the second spring 114 are both made of stainless steel. A base 7 is provided at the lower end of the base 2. The buffer 112 on the housing 101 provides flexible support when the pressure plate 105 is reset, reducing the rigid impact when the first spring 107 and the second spring 114 rebound, and preventing cracks or deformation of the surface of the degradable composite material due to demolding impact. The buffer 112 can reduce the instantaneous stress on the spring and the connecting rod 104. To reduce fatigue damage, the sliding cooperation between the slide bar 5 and the support frame 6 provides guidance for the pressing mechanism 4, ensuring its vertical downward pressure and avoiding groove deviation caused by tilting, thus guaranteeing molding accuracy. The rounded corner 113 design of the groove 106 and the tip of the protrusion of the pressing mechanism 4 can reduce the friction between the material and the mold during pressing, preventing scratches and tears on the material surface, while making the groove edge transition smoothly and avoiding springback caused by stress concentration. The rounded corner 113 structure reduces the friction between the material and the mold, making demolding easier and reducing secondary deformation when the workpiece is removed. The first spring 107 and the second spring 114 are made of stainless steel, which can resist the corrosion of acidic gases that may be generated during the processing of biodegradable composite materials, ensuring that the elasticity decay of the springs is minimized after long-term use.
[0034] In this embodiment, a two-stage elastic buffer is formed by the first spring 107 and the second spring 114 inside the housing 101. When the pressing mechanism 4 presses down, the first spring 107 first provides an initial reverse support force. As the pressing depth increases, the second spring 114, in conjunction with the telescopic rod 108, gradually increases the support force. This variable stiffness support can accurately match the rebound stress of the biodegradable composite material at different deformation stages, reducing the rebound rate. The damping columns 110 on both sides of the baffle 103, in conjunction with the sliding block 111 within the groove 109, can absorb the vibration energy during the pressing process, preventing local stress concentration caused by vibration in the material and improving the pressing quality. The groove 106 and the pressing groove... The protrusions of mechanism 4 cooperate to form a molding space. The rounded corner 113 at the bottom tip can reduce the material flow resistance and prevent the material from being scratched during pressing. At the same time, it makes the groove edge transition smoothly, further enhancing the anti-rebound effect. The heating mechanism in the pressure plate 105 can soften the biodegradable composite material and reduce its elasticity. The pressure sensor in the pressing mechanism 4 cooperates with the controller 8 to adjust the heating state according to the real-time pressure data, so that the material is molded in the best plastic state, reducing the accumulation of internal stress. The buffer 112 on the upper surface of the housing 101 can provide flexible support when the pressure plate 105 is pressed, avoiding the rigid impact when the spring is initially compressed, and protecting the surface of the biodegradable composite material from damage.
[0035] The working principle of the above embodiment is as follows: The biodegradable composite material is placed on the groove 106 of the pressure plate 105. At this time, the pressure plate 105 is supported on the housing 101 by the connecting rod 104. The first spring 107 and the second spring 114 are in a naturally extended state. The baffle 103 is located in the initial position in the movable chamber 102. The controller 8 sets the pressure and temperature parameters required for the pressing groove. The controller 8 starts the electric push rod 3. The output end of the electric push rod 3 extends downward, driving the pressing groove mechanism 4 to move downward along the slide rod 5. The slide rod 5 is slidably connected to the support frame 6 to ensure the pressing groove mechanism. 4. Vertical downward pressure to prevent displacement: After the pressure groove mechanism 4 contacts the biodegradable composite material, it applies downward pressure, pushing the pressure plate 105 downward. The connecting rod 104 drives the baffle 103 to move downward within the movable chamber 102. The first spring 107 is compressed, generating an upward reverse support force. At the same time, the baffle 103 presses down the telescopic rod 108 and the second spring 114, which is also compressed, further increasing the reverse support force and forming a multi-stage elastic support to counteract the rebound stress of the material. When the baffle 103 moves downward, the damping columns 110 on both sides pass through the slider 1. The 11 slides within the groove 109, generating damping force to absorb vibration energy during the pressing process and prevent the material from being affected by vibration, thus ensuring the accuracy of the groove. During the grooving process, the heating mechanism inside the pressure plate 105 heats the biodegradable composite material, reducing its elastic modulus and making it easier to mold. The pressure sensor inside the grooving mechanism 4 detects the grooving pressure in real time and transmits the data to the controller 8. The controller 8 adjusts the thrust of the electric push rod 3 according to the pressure data to ensure that the grooving pressure is stable within a suitable range. When the grooving mechanism 4 is pressed down to the set position, the electric push rod... 3. Maintain the thrust, the first spring 107 and the second spring 114 continuously provide the opposite support force, the heating mechanism maintains the temperature, so that the material is shaped under the combined action of pressure and temperature to avoid rebound. After the groove is shaped, the electric push rod 3 retracts, driving the groove mechanism 4 to reset upward. The pressure plate 105 moves upward under the elastic force of the first spring 107 and the second spring 114. The buffer 112 on the upper surface of the housing 101 plays a buffering role to reduce the impact when the pressure plate 105 resets. Finally, the shaped material can be taken out from the groove 106 of the pressure plate 105.
[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
[0037] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A spring-resistant groove shaping device for biodegradable composite materials, comprising a spring-resistant mechanism (1) and a base (2), characterized in that: The anti-rebound mechanism (1) is installed on the upper surface of the base (2). A support frame (6) is fixedly connected to the upper surface of the base (2). An electric push rod (3) is fixedly connected to the upper surface of the support frame (6). The output end of the electric push rod (3) is movably connected inside the support frame (6). A pressure groove mechanism (4) is fixedly connected to the lower end of the electric push rod (3). The anti-rebound mechanism (1) includes a housing (101). The housing (101) is installed on the upper surface of the base (2). A movable chamber (102) is opened inside the housing (101). A baffle (103) is movably connected inside the movable chamber (102). A connecting rod (104) is fixedly connected to the upper surface of the baffle (103). The upper end of the connecting rod (104) is movably connected to the upper surface of the housing (101). A pressure plate (105) is fixedly connected to the upper end of the connecting rod (104). The connecting rod (104) is fitted with a first spring (107). The upper end of the first spring (107) is fixedly connected to the upper end of the movable chamber (102). The lower end of the first spring (107) is fixedly connected to the upper surface of the baffle (103). The lower surface of the baffle (103) is fixedly connected with a telescopic rod (108) and a second spring (114). The second spring (114) is fitted with the surface of the telescopic rod (108). The upper end of the second spring (114) is fixedly connected to the lower surface of the baffle (103). The lower end of the second spring (114) is fixedly connected to the lower surface of the movable chamber (102). The pressing mechanism (4) is equipped with a pressure sensor to detect the pressure value during the pressing process. The base (2) is equipped with a controller (8) on the front side. The controller (8) is electrically connected to the electric push rod (3) and the pressure sensor.
2. The anti-rebound molding device for biodegradable composite materials according to claim 1, characterized in that: The connecting rod (104), the first spring (107), the telescopic rod (108), and the second spring (114) are all provided in multiple sets and are evenly distributed on the upper and lower surfaces of the baffle (103).
3. The anti-rebound molding device for biodegradable composite materials according to claim 1, characterized in that: The upper surface of the pressure plate (105) is provided with a groove (106), and a heating mechanism is provided inside the pressure plate (105) for heating the biodegradable composite material.
4. The anti-rebound molding device for biodegradable composite materials according to claim 1, characterized in that: Damping columns (110) are fixedly connected to both sides of the baffle (103). A slider (111) is fixedly connected to one end of the damping column (110) away from the baffle (103). A sliding groove (109) is opened inside the movable chamber (102), and the slider (111) is slidably connected inside the sliding groove (109).
5. The anti-rebound molding device for biodegradable composite materials according to claim 1, characterized in that: A buffer (112) is fixedly connected to the upper surface of the housing (101), and the upper end of the buffer (112) is fixedly connected to the lower surface of the pressure plate (105).
6. The anti-rebound molding device for biodegradable composite materials according to claim 1, characterized in that: The upper surface of the pressing mechanism (4) is fixedly connected to a slide rod (5), and the slide rod (5) and the upper surface of the support frame (6) are slidably connected.
7. The anti-rebound molding device for biodegradable composite materials according to claim 3, characterized in that: The bottom tip of the groove (106) and the bottom protrusion tip of the pressing mechanism (4) are both provided with rounded corners (113).
8. The anti-rebound molding device for biodegradable composite materials according to claim 1, characterized in that: The first spring (107) and the second spring (114) are both made of stainless steel, and a base (7) is provided at the lower end of the base (2).