A moulding device for moulding blister trays
Patent Information
- Application Number
- CN202522641378.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-12
AI Technical Summary
本申请的目的在于提供一种用于吸塑托盘吸塑成型的压模装置，解决了上述背景技术中的技术问题，实现了通过下凹模内的蛇形冷却结构可快速均匀降温，缩短吸塑托盘成型周期，提升生产效率并保障质量稳定，减少温度不均所致产品变形缺陷，上凸模边缘借多个弹压机构连矩形切刀，合模时配合下凹模矩形刀槽，能精准切割吸塑托盘边缘，使切割面整齐美观，既提高产品外观质量又降低劳动强度、提升加工效率，L形架、立杆及退料机构的联动设计，使得上凸模在上升并脱离下凹模端口后才带动退料板顶出成型托盘，退料平稳可靠，避免卡顿，降低产品损坏风险，增强生产连续性与自动化程度的技术效果
1.通过在下凹模内设置由水冷却管和U形管串联而成的蛇形冷却结构，能够快速均匀地降低模具温度，显著缩短吸塑托盘的成型周期，提高生产效率，同时保证产品质量的稳定性，减少因温度不均导致的产品变形等缺陷；
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Figure CN224915333U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of thermoforming molding devices, and more specifically, to a molding device for thermoforming thermoforming trays. Background Technology
[0002] In the production of blister trays, blister forming is one of the key processes, and its quality directly affects the performance and usability of the blister tray. Existing blister forming molding devices suffer from inaccurate and inefficient temperature control of the molds, resulting in long forming cycles and unstable product quality. The unpacking process requires manual trimming of excess edges with cutting tools, which is labor-intensive, inefficient, and prone to uneven edge cutting, affecting the product's appearance and subsequent use, making it difficult to guarantee product consistency. Furthermore, the unpacking process is not smooth and prone to jamming, reducing production efficiency and potentially causing product damage. Therefore, we propose a molding device for blister tray blister forming. Utility Model Content
[0003] 1. Technical problems to be solved The purpose of this application is to provide a molding device for thermoforming blister trays, which solves the technical problems in the background art mentioned above. It achieves rapid and uniform cooling through the serpentine cooling structure in the lower die, shortens the blister tray forming cycle, improves production efficiency and ensures stable quality, and reduces product deformation defects caused by uneven temperature. The upper punch edge is connected to a rectangular cutter by multiple spring-loaded mechanisms. When the mold is closed, it works with the rectangular cutter groove of the lower die to accurately cut the edge of the blister tray, making the cut surface neat and beautiful. This not only improves the appearance quality of the product but also reduces labor intensity and improves processing efficiency. The linkage design of the L-shaped frame, uprights and ejection mechanism ensures that the upper punch only drives the ejection plate to eject the formed tray after rising and disengaging from the lower die port. The ejection is smooth and reliable, avoids jamming, reduces the risk of product damage, and enhances the technical effects of production continuity and automation.
[0004] 2. Technical Solution This application provides a molding device for thermoforming blister trays, comprising: a lower concave mold and an upper convex mold. Two servo electric cylinders are fixedly mounted on one side surface of the lower concave mold. An L-shaped frame is connected between the upper convex mold and the piston rod of the servo electric cylinders. Multiple spring-loaded mechanisms are installed along the rectangular edge of the upper convex mold, and the spring-loaded mechanisms are connected to a rectangular cutter. A row of multiple water cooling pipes is built into the lower concave mold. Multiple U-shaped pipes are threaded between the water cooling pipes and connected in series in a serpentine structure. A material ejection mechanism is installed on the lower concave mold. Two uprights are slidably mounted on the L-shaped frame. A round block is fixed at the top of each upright. The uprights move through the lower concave mold. After the upper convex mold moves upward and holds the round block, the material ejection mechanism, linked by the uprights, ejects the formed blister tray from the lower concave mold.
[0005] By adopting the above technical solution, the L-shaped frame is driven by a servo electric cylinder to perform lifting and lowering movements, which can realize the opening and closing actions of the lower concave mold and the upper convex mold. Multiple spring-loaded mechanisms installed on the edge of the upper convex mold are used to install rectangular cutters. During the mold closing process, the rectangular cutters can cut and process the excess part of the edge of the blister tray, ensuring the accuracy and consistency of the edge cutting of the blister tray, effectively improving the quality and appearance of the product. The water cooling pipe built into the lower concave mold and the serpentine cooling structure composed of multiple U-shaped tubes greatly optimize the cooling efficiency, which is conducive to improving product quality and production efficiency. Moreover, the upper convex mold, through the design of the L-shaped frame, round block and upright linkage ejection mechanism, realizes a reliable ejection function during the cooling and forming of the blister tray and the upward movement of the upper convex mold. All parts cooperate with each other to form a complete and efficient blister tray blister forming molding device.
[0006] Optionally, the upper surface of the lower die is provided with a rectangular cutter groove that matches the rectangular cutter, and a base is fixed at each of the four corners of the bottom surface of the lower die.
[0007] By adopting the above technical solution, the rectangular cutter can be accurately embedded in the rectangular cutter groove during the vacuum forming process, avoiding the cutter from shifting or shaking. This ensures the accuracy and consistency of the edge cutting of the vacuum tray, effectively improving the quality and appearance of the product, while also extending the service life of the rectangular cutter and reducing production costs.
[0008] Optionally, two mounting blocks are fixed to one side surface of the lower die, and a servo electric cylinder is fixedly mounted on each mounting block.
[0009] By adopting the above technical solution, the mounting block provides a stable mounting foundation for the servo electric cylinder. The symmetrical layout of the two servo electric cylinders makes the upper punch more evenly stressed during the lifting process, which can better ensure the parallelism and perpendicularity of the mold, thereby improving the forming accuracy of the blister tray.
[0010] Optionally, two connecting blocks are fixed on the L-shaped frame, and the connecting blocks are fixedly connected to the upper punch by bolts.
[0011] By adopting the above technical solution, the L-shaped frame is fixedly connected to the upper punch by two connecting blocks using multiple bolts. This connection method is simple and firm, and facilitates disassembly and assembly, which is beneficial for equipment maintenance and parts replacement.
[0012] Optionally, the spring-loaded mechanism includes multiple U-shaped blocks two fixed along the rectangular edge of the lower die and multiple U-shaped blocks one fixed along the rectangular edge of the rectangular cutter. The U-shaped blocks one and two are arranged in a one-to-one correspondence. A T-shaped rod is fixed on the U-shaped block one. The T-shaped rod is slidably inserted into the U-shaped block two. A spring is installed on the outer sleeve of the T-shaped rod. The two ends of the spring are fixedly connected to the upper surface of the T-shaped rod and the U-shaped block two.
[0013] By adopting the above technical solution, when the upper punch descends, the rectangular cutter presses against the blister tray, causing the spring to be compressed. As the upper punch continues to descend, the rectangular cutter can maintain appropriate pressure contact with the lower die, ensuring the cutting effect. After cutting, the elastic restoring force of the spring can help the rectangular cutter quickly return to its original position, preventing the cutter from sticking to the formed blister tray, thus improving the continuity and efficiency of production.
[0014] Optionally, the ejection mechanism includes an ejection plate, and the bottom surface of the lower die is provided with a rectangular groove that matches the ejection plate. An L-shaped push rod is fixedly connected between the bottom surface of the ejection plate and the upright, and the L-shaped push rod moves through the lower die.
[0015] By adopting the above technical solution, the ejector plate is embedded in the rectangular groove inside the lower die. Under the weight of the ejector plate, when the upper punch moves upward but does not contact the round block, the upright and L-shaped push rod will not move upward with the upper punch. When the upper punch contacts the round block, that is, after the upper punch disengages from the port of the lower die, the upright drives the L-shaped push rod to move upward with the ejector plate, so that the ejector plate can be ejected from the blister tray smoothly and linearly, effectively preventing the ejector plate from tilting or getting stuck. This allows the formed blister tray to be smoothly ejected from the lower die, completing the ejection operation and preparing for the next production cycle, greatly improving the automation level and overall efficiency of production.
[0016] 3. Beneficial effects One or more technical solutions provided in this application have at least the following technical effects or advantages: 1. By setting a serpentine cooling structure consisting of water cooling pipes and U-shaped pipes connected in series in the lower mold, the mold temperature can be reduced quickly and evenly, significantly shortening the molding cycle of the blister tray, improving production efficiency, while ensuring the stability of product quality and reducing defects such as product deformation caused by uneven temperature. 2. The upper punch edge is connected to a rectangular cutter through multiple spring-loaded mechanisms. During the mold closing process, in conjunction with the rectangular cutter groove on the lower die, it can achieve precise cutting of the edge of the blister tray during the blister forming process, making the cut surface neat and smooth, improving the product appearance quality, reducing labor intensity, and improving processing efficiency; 3. The linkage design of the L-shaped frame, uprights, and ejection mechanism ensures that the ejection plate can smoothly eject the molded blister tray from the lower die only when the upper punch rises. The ejection process is smooth and reliable, effectively avoiding jamming, reducing the risk of product damage, and improving the continuity and automation of production. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of a molding device for thermoforming blister trays, as disclosed in a preferred embodiment of this application. Figure 2 This is a partial cross-sectional view of the lower die of a molding device for thermoforming blister trays, as disclosed in a preferred embodiment of this application. Figure 3 A preferred embodiment of this application discloses a molding device for thermoforming blister trays. Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the upper punch and rectangular cutter structure of a molding device for thermoforming blister trays, as disclosed in a preferred embodiment of this application. Figure 5 A preferred embodiment of this application discloses a molding device for thermoforming blister trays. Figure 4 Enlarged structural diagram at point B; The following are the labels in the diagram: 1. Lower die; 11. Rectangular cutter groove; 12. Rectangular insert; 13. Mounting block; 14. Base; 2. Upper punch; 3. Servo electric cylinder; 4. L-shaped frame; 41. Upright rod; 411. Round block; 42. Connecting block; 5. Rectangular cutter; 6. Spring pressing mechanism; 61. U-shaped block one; 62. U-shaped block two; 63. T-shaped rod; 64. Spring; 7. Water cooling pipe; 71. U-shaped pipe; 8. Unloading mechanism; 81. Unloading plate; 82. L-shaped push rod. Detailed Implementation
[0018] The present application will be further described in detail below with reference to the accompanying drawings.
[0019] Reference Figures 1 to 5This application provides a molding device for thermoforming blister trays, comprising: a lower die 1 and an upper die 2. Two servo cylinders 3 are fixedly mounted on one side of the lower die 1. An L-shaped frame 4 is connected between the piston rods of the upper die 2 and the servo cylinders 3. Multiple spring-loaded mechanisms 6 are mounted on the upper die 2 along its rectangular edge, and the spring-loaded mechanisms 6 are connected to a rectangular cutter 5. A row of multiple water cooling pipes 7 are built into the lower die 1. Multiple U-shaped pipes 71 are threadedly connected between the water cooling pipes 7 and connected in series in a serpentine structure. A material ejection mechanism 8 is mounted on the lower die 1. Two uprights 41 are slidably mounted on the L-shaped frame 4. A round block 411 is fixed at the top of the uprights 41. The uprights 41 move through the lower die 1. After the upper die 2 moves upward and holds the round block 411, the material ejection mechanism 8, linked by the uprights 41, ejects the formed blister tray from the lower die 1 and ejects the material. The electric cylinder 3 drives the L-shaped frame 4 to move up and down, which can realize the opening and closing action of the lower concave mold 1 and the upper punch 2. Multiple spring-loaded mechanisms 6 installed on the edge of the upper punch 2 are used to install rectangular cutters 5. During the mold closing process, the rectangular cutters 5 can cut the excess part of the edge of the blister tray, ensuring the accuracy and consistency of the edge cutting of the blister tray, effectively improving the quality and appearance of the product. The water cooling pipe 7 built into the lower concave mold 1 and the serpentine cooling structure composed of multiple U-shaped pipes 71 greatly optimize the cooling efficiency, which is conducive to improving product quality and production efficiency. Moreover, the upper punch 2 is designed with a material ejection mechanism 8 linked by the L-shaped frame 4, the round block 411 and the upright 41, which realizes a reliable material ejection function during the cooling and forming of the blister tray and the upward movement of the upper punch 2. All parts cooperate with each other to form a complete and efficient blister tray blister forming molding device.
[0020] Reference Figure 1 and Figure 2 The upper surface of the lower mold 1 is provided with a rectangular cutter groove 11 that matches the rectangular cutter 5. A base 14 is fixed at each of the four corners of the bottom surface of the lower mold 1. During the vacuum forming process, the rectangular cutter 5 can be accurately embedded in the rectangular cutter groove 11 to prevent the cutter from shifting or shaking, thereby ensuring the accuracy and consistency of the edge cutting of the vacuum tray, effectively improving the quality and appearance of the product, while also extending the service life of the rectangular cutter 5 and reducing production costs.
[0021] Reference Figure 1 and Figure 2 Two mounting blocks 13 are fixed on one side surface of the lower die 1. A servo electric cylinder 3 is fixedly mounted on each mounting block 13. The mounting block 13 provides a stable mounting base for the servo electric cylinder 3. The symmetrical layout of the two servo electric cylinders 3 makes the upper punch 2 more evenly stressed during the lifting process, which can better ensure the parallelism and perpendicularity of the mold, thereby improving the forming accuracy of the blister tray.
[0022] Reference Figure 1 and Figure 2Two connecting blocks 42 are fixed on the L-shaped frame 4. The connecting blocks 42 are fixedly connected to the upper punch 2 by bolts. The L-shaped frame 4 is fixedly connected to the upper punch 2 by the two connecting blocks 42 using multiple bolts. This connection method is simple and firm, and is convenient for disassembly and assembly, which is beneficial for equipment maintenance and replacement of parts.
[0023] Reference Figure 4 and Figure 5 The spring-loaded mechanism 6 includes multiple U-shaped blocks 62 fixed along the rectangular edge of the lower die 1 and multiple U-shaped blocks 61 fixed along the rectangular edge of the rectangular cutter 5. The U-shaped blocks 61 and 62 are arranged in a one-to-one correspondence. A T-shaped rod 63 is fixed on the U-shaped block 61 and is slidably inserted into the U-shaped block 62. A spring 64 is installed on the outer sleeve of the T-shaped rod 63. The two ends of the spring 64 are fixedly connected to the upper surfaces of the T-shaped rod 63 and the U-shaped block 62. When the upper die 2 descends, the rectangular cutter 5 presses against the blister tray, which compresses the spring 64. As the upper die 2 continues to descend, the rectangular cutter 5 can maintain appropriate pressure contact with the lower die 1 to ensure the cutting effect. After cutting, the elastic restoring force of the spring 64 can help the rectangular cutter 5 quickly return to its original position, avoiding the cutter from sticking to the formed blister tray, thus improving the continuity and efficiency of production.
[0024] Reference Figure 2 and Figure 3 The ejection mechanism 8 includes an ejection plate 81. A rectangular groove 12 matching the ejection plate 81 is provided on the bottom surface of the lower die 1. An L-shaped push rod 82 is fixedly connected between the bottom surface of the ejection plate 81 and the upright 41. The L-shaped push rod 82 movably passes through the lower die 1. The ejection plate 81 is embedded in the rectangular groove 12 within the lower die 1. Under the weight of the ejection plate 81, when the upper punch 2 moves upward and does not abut against the round block 411, the upright 41 and the L-shaped push rod 82 will not move with the upper punch 2. Together, they move upwards. When the upper punch 2 abuts against the round block 411, that is, after the upper punch 2 disengages from the port of the lower die 1, the upright rod 41 drives the L-shaped push rod 82 and the ejector plate 81 to move upwards together. This allows the ejector plate 81 to eject the blister tray smoothly and linearly, effectively preventing the ejector plate 81 from tilting or getting stuck. This allows the formed blister tray to be smoothly ejected from the lower die 1, completing the ejection operation and preparing for the next production cycle. This greatly improves the automation level and overall efficiency of production.
[0025] Working principle: During operation, the plastic sheet to be processed is first placed on the lower die 1. The piston rod of the servo cylinder 3 pushes the L-shaped frame 4 downward, which in turn drives the upper punch 2 to close downward. During the process of mold closing and forming the blister tray structure, the rectangular cutter 5 on the edge of the upper punch 2, under the action of the spring-loaded mechanism 6, can apply a certain shearing pressure to the plastic sheet, so that the excess part of the edge of the blister tray can be directly cut off. There is no need for manual cutting of excess parts, reducing labor intensity and improving processing efficiency. The water-cooling pipe 7 pumps cooling water, and the circulating cooling water quickly removes heat, allowing the blister tray to cool and solidify rapidly. After molding, the servo cylinder 3 reverses its action, causing the upper punch 2 to rise. The L-shaped frame 4 moves upward along the upright 41 until it abuts the round block 411. Then, the upright 41 links the L-shaped push rod 82 and the ejector plate 81 to move upward together, thereby ejecting the molded blister tray from the lower die 1 through the ejector plate 81, achieving automatic ejection. The entire process proceeds in an orderly manner, efficiently and stably completing the molding process of the blister tray.
Claims
1. A molding device for thermoforming blister trays, characterized in that: It includes: a lower die (1) and an upper die (2). Two servo electric cylinders (3) are fixedly mounted on one side surface of the lower die (1). An L-shaped frame (4) is connected between the piston rod of the upper die (2) and the servo electric cylinder (3). Multiple spring-loaded mechanisms (6) are installed along the rectangular edge of the upper die (2), and the spring-loaded mechanisms (6) are connected to a rectangular cutter (5). A row of multiple water cooling pipes (7) is built into the lower die (1), and the water cooling pipes (7) are threaded together. Multiple U-shaped tubes (71) are connected in series to form a serpentine structure. A material ejection mechanism (8) is installed on the lower concave mold (1). Two uprights (41) are slidably installed on the L-shaped frame (4). A round block (411) is fixed at the top of the upright (41). The upright (41) moves through the lower concave mold (1). After the upper punch (2) moves up and holds the round block (411), the material ejection mechanism (8) linked by the upright (41) ejects the molded blister tray in the lower concave mold (1) and ejects the material.
2. The molding device for thermoforming blister trays according to claim 1, characterized in that: The upper surface of the lower die (1) is provided with a rectangular cutter groove (11) that matches the rectangular cutter (5), and a base (14) is fixed at each of the four corners of the bottom surface of the lower die (1).
3. The molding device for thermoforming blister trays according to claim 1, characterized in that: Two mounting blocks (13) are fixed on one side surface of the lower die (1), and a servo electric cylinder (3) is fixedly mounted on each mounting block (13).
4. A molding device for thermoforming blister trays according to claim 1, characterized in that: Two connecting blocks (42) are fixed on the L-shaped frame (4), and the connecting blocks (42) are fixedly connected to the upper punch (2) by bolts.
5. A molding device for thermoforming blister trays according to claim 1, characterized in that: The spring-pressing mechanism (6) includes multiple U-shaped blocks two (62) fixed along the rectangular edge of the lower die (1) and multiple U-shaped blocks one (61) fixed along the rectangular edge of the rectangular cutter (5). The U-shaped blocks one (61) and U-shaped blocks two (62) are arranged in a one-to-one correspondence. A T-shaped rod (63) is fixed on the U-shaped block one (61). The T-shaped rod (63) is slidably inserted into the U-shaped block two (62). A spring (64) is installed on the outer sleeve of the T-shaped rod (63). The two ends of the spring (64) are fixedly connected to the upper surfaces of the T-shaped rod (63) and the U-shaped blocks two (62).
6. A molding device for thermoforming blister trays according to claim 1, characterized in that: The ejection mechanism (8) includes an ejection plate (81), and the bottom surface of the lower die (1) is provided with a rectangular groove (12) that matches the ejection plate (81). An L-shaped push rod (82) is fixedly connected between the bottom surface of the ejection plate (81) and the upright (41), and the L-shaped push rod (82) moves through the lower die (1).