Protective structure for plastic product proofing press

Abstract

The protective structure comprises a fixed mold, a movable mold, a driving shaft and a protective assembly, the driving shaft is used for driving the movable mold to do opening and closing movement relative to the fixed mold, and the protective assembly comprises a fixed protective cover, a movable protective cover, a linkage driving mechanism and a safety locking device. The fixed protective cover is arranged on the plastic product proofing press and used for covering a non-working area of the fixed mold, the movable protective cover is used for covering a working area of the movable mold, the linkage driving mechanism comprises a gear set and a rack, the gear set is rotationally borne on the movable mold, the rack is arranged on the movable protective cover in the vertical direction and meshed with the gear set, and the rack is arranged on the movable protective cover. When the driving shaft drives the movable mold to act, the movable protective cover moves in the same direction along with the driving shaft through cooperation of the gear set and the rack, and the plastic product proofing machine has the effect of improving the safety of the plastic product proofing machine during working.

Description

Technical Field

[0001] This application relates to the field of tape production, and in particular to a protective structure for a plastic product prototyping machine. Background Technology

[0002] Plastic products typically require attention to their tensile strength, impact resistance, and hardness. Since plastic products are usually formed from plastic granules through injection molding, the properties of the plastic granules determine the physical and chemical properties of the molded product. Before producing a plastic product, the raw materials need to be prepared and made into plastic granules based on the required performance specifications. After preparation, the granules are melted and shaped using a plastic product prototyping machine to form a sample. The physical and chemical properties of the sample are then tested using specialized testing instruments to determine whether the prepared plastic granules meet the product design requirements.

[0003] A plastic product prototyping machine can be understood as a small injection molding machine. When it is necessary to make a sample of a plastic product, the proportioned plastic granules need to be put into the plastic product prototyping machine. The plastic product prototyping machine starts to melt the plastic granules, and then drives the moving mold to move towards the fixed mold through the drive shaft. After the moving mold and the fixed mold are closed, the molten plastic fluid is injected into the mold to make a sample.

[0004] However, plastic product prototyping machines operate at high temperatures. To avoid burns or other dangerous situations, operators usually need to wear special protective gear. However, some protective gear still melts or has poor insulation when in contact with high temperatures, resulting in burns to operators. In order to reduce the probability of burns or other dangerous accidents to operators when operating plastic product prototyping machines, existing plastic products need to be improved. Utility Model Content

[0005] To improve the safety of plastic product prototyping machines during operation, this application provides a protective structure for plastic product prototyping machines.

[0006] The protective structure for a plastic product prototyping machine provided in this application adopts the following technical solution:

[0007] A protective structure for a plastic product prototyping machine includes a fixed mold, a moving mold, a drive shaft, and protective components. The drive shaft drives the moving mold to open and close relative to the fixed mold. The protective components include a fixed protective cover, a movable protective cover, a linkage drive mechanism, and a safety locking device. The fixed protective cover is mounted on the plastic product prototyping machine and covers the non-working area of ​​the fixed mold. The movable protective cover covers the working area of ​​the moving mold. The linkage drive mechanism includes a gear set and a rack. The gear set is rotatably supported on the moving mold. The rack is vertically mounted on the movable protective cover and meshes with the gear set. When the drive shaft drives the moving mold to move, the movable protective cover moves in the same direction as the drive shaft through the cooperation of the gear set and the rack.

[0008] By adopting the above technical solutions, the division of labor between the fixed and movable protective covers provides spatial protection for both the fixed and movable molds, reducing the risk of operators coming into contact with high-temperature components to a certain extent. The design of the linkage drive mechanism synchronizes the movements of the movable protective cover and the movable mold, continuously providing protection for the working area of ​​the movable mold during its opening and closing process, reducing the probability of operators accidentally touching dangerous areas, and improving operational safety and the timeliness of protection.

[0009] Preferably, the linkage drive mechanism further includes an adjustable link, one end of which is connected to the moving mold, and the other end of which is connected to the movable protective cover. The adjustable link is used to adjust the height difference between the moving mold and the movable protective cover in the vertical direction.

[0010] By adopting the above technical solution and adding an adjustable connecting rod to the existing protective structure, a height difference adjustment function is provided. To meet the sampling needs of plastic products of different specifications, the relative positions of the moving mold and the movable protective cover can be flexibly adjusted to ensure that the movable protective cover accurately protects the working area of ​​the moving mold, thus improving the versatility and applicability of the protective structure.

[0011] Preferably, the inner walls of both the fixed protective cover and the movable protective cover are laminated with a ceramic fiber heat insulation layer, and the outer walls of both the fixed protective cover and the movable protective cover are provided with a high-temperature resistant silicone sealing layer.

[0012] By adopting the above technical solutions, the ceramic fiber insulation layer possesses excellent heat insulation capabilities, effectively preventing the transfer of internal high temperatures to the outside and reducing the risk of burns. The high-temperature resistant silicone sealing layer reduces heat leakage from gaps and effectively reduces the entry of external dust and debris, improving the heat insulation and sealing performance of the protective structure.

[0013] Preferably, the gear set includes a first gear, a second gear, and a third gear, which mesh with each other. The rack meshes with the third gear. When the drive shaft drives the rack through the gear set, the travel distance of the drive shaft is the same as the travel distance of the rack.

[0014] By adopting the above technical solution, the gear set in the linkage drive mechanism features three meshing gears, enabling force transmission and change of motion direction. This structure helps the movable protective cover follow the moving mold's movement more stably and accurately, reducing slippage and jamming caused by single gear transmission, improving transmission stability and reliability, and ensuring the normal operation of the protective structure.

[0015] Preferably, when the moving mold and the fixed mold are closed, the movable protective cover abuts against the fixed protective cover.

[0016] By adopting the above technical solution, when the moving mold and the fixed mold are closed, the movable protective cover and the fixed protective cover abut against each other to form a relatively closed protective space, which further strengthens the protection of high-temperature areas, reduces the possibility of operators coming into contact with dangerous areas when closing the mold, and at the same time reduces heat loss to a certain extent, which has the potential to help improve the efficiency of prototyping work.

[0017] Preferably, the safety locking device includes an electromagnetic pin and a locking plate. The electromagnetic pin is disposed on the movable protective cover, and the locking plate is disposed on the plastic product prototyping machine. The electromagnetic pin is electrically connected to the controller of the plastic product prototyping machine. When the fixed mold is in the initial position, the electromagnetic pin and the locking plate are attracted to each other.

[0018] By adopting the above technical solution, when the fixed mold is in the initial position, the electromagnetic pin and the locking plate are attracted to each other, which restricts the accidental movement of the fixed mold, reduces the risk of injury to the operator due to the movement of the fixed mold when the fixed mold is not in operation, improves the safety and stability of the plastic product prototyping machine when it is not in operation, and facilitates automated control.

[0019] Preferably, it further includes a sliding assembly, which includes a slide rail and a slider. The slider is disposed on the movable protective cover, and the slide rail is disposed on the moving mold in the same direction as the rack, and the slider slides in cooperation with the slide rail.

[0020] By adopting the above technical solution, the sliding component provides guidance and support for the movement of the movable protective cover. With the cooperation of the slide rail and the slider, the movable protective cover can slide more smoothly and steadily when following the movement of the moving mold, reducing shaking and jamming, improving motion accuracy and reliability, and further enhancing the protective effect.

[0021] Preferably, the fixed protective cover is provided with a heat dissipation grille, and the inclination angle of the heat dissipation grille is set between 30° and 45°. The heat dissipation grille is used to dissipate the heat inside when the movable protective cover and the fixed protective cover come into contact.

[0022] By adopting the above technical solution, the design of the heat dissipation grille can effectively dissipate internally accumulated heat, reducing the adverse effects of heat accumulation on the operation of the prototyping machine and the performance of the protective structure. Setting the tilt angle of the heat dissipation grille between 30° and 45° ensures heat dissipation while reducing the amount of external dust and debris entering, thus improving the heat dissipation and protection performance of the protective structure.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up fixed and movable protective covers, the fixed and movable mold areas are effectively protected, reducing the risk of operators coming into contact with high-temperature components; the linkage drive mechanism makes the movable protective cover move synchronously with the movable mold, continuously protecting the working area of ​​the movable mold; when the movable mold and the fixed mold are closed, the movable protective cover abuts against the fixed protective cover to form a closed protective space, further reducing the possibility of operators coming into contact with dangerous areas; the safety locking device restricts the accidental movement of the fixed mold in the initial position of the fixed mold, improving safety in non-working states;

[0025] 2. The adjustable linkage can flexibly adjust the height difference between the moving mold and the movable protective cover to adapt to the sampling needs of plastic products of different specifications and improve the versatility of the protective structure; the multi-gear meshing design of the gear set and the cooperation of the slide rail and slider of the sliding component improve the stability, accuracy and smoothness of the movable protective cover following the movement of the moving mold, and reduce movement failures;

[0026] 3. The ceramic fiber insulation layer and the high-temperature resistant silicone sealing layer enhance the insulation and sealing performance, reduce heat transfer and leakage, and effectively reduce the entry of dust and debris; the heat dissipation grille can effectively dissipate the internal accumulated heat, and the reasonable tilt angle setting takes into account both heat dissipation and dust prevention functions, reducing the adverse effects of heat on the operation of the prototyping machine and the performance of the protective structure. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a protective structure for a plastic product prototyping machine according to an embodiment of this application.

[0028] Figure 2 yes Figure 1 A schematic diagram of a protective structure for a plastic product prototyping machine, showing the structure behind a concealed movable protective cover.

[0029] Figure 3 yes Figure 2 A magnified structural diagram of part A in the middle.

[0030] Figure 4 This is a schematic diagram of the structure of a protective structure for a plastic product prototyping machine, where the movable protective cover is fitted onto the fixed protective cover.

[0031] Explanation of reference numerals in the attached drawings: 1. Fixed mold; 2. Moving mold; 3. Drive shaft; 4. Plastic product prototyping machine; 5. Protective components; 51. Fixed protective cover; 52. Movable protective cover; 53. Linkage drive mechanism; 531. Gear set; 5311. First gear; 5312. Second gear; 5313. Third gear; 532. Rack; 54. Safety locking device; 541. Electromagnetic pin; 542. Locking plate; 6. Sliding component; 61. Slide rail; 62. Slider; 7. Heat dissipation grille. Detailed Implementation

[0032] It should be noted that the drive shaft 3 is driven by the drive components of the plastic product prototyping machine 4, such as a hydraulic cylinder, which is an existing device and its specific composition will not be described in detail here.

[0033] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0034] This application discloses a protective structure for a plastic product prototyping machine 4. (Refer to...) Figure 1 , Figure 2 as well as Figure 3 A protective structure for a plastic product prototyping machine 4 includes a fixed mold 1, a moving mold 2, a drive shaft 3, and a protective assembly 5. The drive shaft 3 drives the moving mold 2 to open and close relative to the fixed mold 1. The protective assembly 5 includes a fixed protective cover 51, a movable protective cover 52, a linkage drive mechanism 53, and a safety locking device 54. The fixed protective cover 51 is installed on the plastic product prototyping machine 4 to cover the non-working area of ​​the fixed mold 1. The movable protective cover 52 covers the working area of ​​the moving mold 2. The linkage drive mechanism 53 includes a gear set 531 and a rack 532. The gear set 531 is rotatably supported on the moving mold 2. The rack 532 is vertically mounted on the movable protective cover 52 and meshes with the gear set 531. When the drive shaft 3 drives the moving mold 2 to move, the movable protective cover 52 moves in the same direction as the drive shaft 3 through the cooperation of the gear set 531 and the rack 532. The linkage drive mechanism 53 also includes an adjustable connecting rod. One end of the adjustable connecting rod is connected to the moving mold 2, and the other end of the adjustable connecting rod is connected to the movable protective cover 52. The adjustable connecting rod is used to adjust the height difference between the moving mold 2 and the movable protective cover 52 in the vertical direction.

[0035] Reference Figure 3The fixed mold 1 is fixedly installed on the worktable of the plastic product prototyping machine 4, and its position is stable. The fixed protective cover 51 is fixedly connected to the body of the plastic product prototyping machine 4 by bolts or welding, covering the non-working area of ​​the fixed mold 1. It will not be displaced during the operation of the plastic product prototyping machine 4, and provides a stable protective space for the fixed mold 1.

[0036] The moving mold 2 is connected to one end of the drive shaft 3 and performs linear reciprocating motion under the drive of the drive shaft 3. The movable protective cover 52 is located above the moving mold 2, covering the working area of ​​the moving mold 2. The linkage drive mechanism 53 connects the moving mold 2 and the movable protective cover 52 to achieve synchronous movement between the two. The gear set 531 in the linkage drive mechanism 53 is mounted on the moving mold 2 through bearings and can rotate freely. The gear set 531 includes a first gear 5311, a second gear 5312, and a third gear 5313. The first gear 5311, the second gear 5312, and the third gear 5313 mesh with each other, and the rack 532 meshes with the third gear 5313. When the drive shaft 3 drives the rack 532 to move through the gear set 531, the travel distance of the drive shaft 3 is the same as the travel distance of the rack 532.

[0037] When the drive shaft 3 drives the moving mold 2, the gear set 531 on the moving mold 2 rotates accordingly. Through meshing with the rack 532, it drives the movable protective cover 52 to move synchronously in the vertical direction. When the moving mold 2 and the fixed mold 1 are closed, the movable protective cover 52 abuts against the fixed protective cover 51, forming a relatively closed protective space. This further strengthens the protection of high-temperature areas, reduces the possibility of operators coming into contact with dangerous areas when closing the mold, and at the same time reduces heat loss to a certain extent, which has the potential to help improve the efficiency of prototyping.

[0038] In addition, the linkage drive mechanism 53 also includes an adjustable connecting rod (not shown in the figure), one end of which is connected to the connecting seat on the moving mold 2 via a pin, and the other end is connected to the connecting seat on the movable protective cover 52 via a pin. By adjusting the length of the adjustable connecting rod, the height difference between the moving mold 2 and the movable protective cover 52 in the vertical direction can be changed to meet the sampling needs of plastic products of different specifications.

[0039] Reference Figure 3 and Figure 4 The sliding assembly 6 further ensures the smoothness of the movement of the movable protective cover 52. The sliding assembly 6 includes a slide rail 61 and a slider 62. The slider 62 is mounted on the movable protective cover 52, while the slide rail 61 and rack 532 are mounted in the same direction on the moving mold 2, and the slider 62 slides in conjunction with the slide rail 61. During the movement of the movable protective cover 52 following the moving mold 2, the slider 62 slides along the slide rail 61, providing precise guidance for the movable protective cover 52 and reducing wobbling and jamming during movement.

[0040] The safety locking device 54 includes an electromagnetic pin 541 and a locking plate 542. The electromagnetic pin 541 is mounted on the movable protective cover 52, and the locking plate 542 is mounted on the plastic product prototyping machine 4. The electromagnetic pin 541 is electrically connected to the controller of the plastic product prototyping machine 4. When the fixed mold 1 is in the initial position, the electromagnetic pin 541 and the locking plate 542 are attracted together. The electromagnetic pin 541 is electrically connected to the controller of the plastic product prototyping machine 4. When the fixed mold 1 is in the initial position, the electromagnetic pin 541 is attracted to the locking plate 542 under the control of the controller, thereby restricting the accidental movement of the fixed mold 1.

[0041] In terms of enhanced protective performance, both the fixed protective cover 51 and the movable protective cover 52 have ceramic fiber insulation layers laminated to their inner walls. These layers are adhered to the inner walls of the protective covers using high-temperature resistant adhesive. Their excellent insulation properties effectively prevent the transfer of internal high temperatures to the outside, reducing the risk of burns to operators. Simultaneously, high-temperature resistant silicone sealing layers are installed on the outer walls of both the fixed and movable protective covers 51 and 52. These layers are formed by extrusion molding, reducing heat leakage from gaps and effectively minimizing the entry of external dust and debris into the protective covers, thus improving the insulation and sealing of the protective structure. The fixed protective cover 51 has heat dissipation grilles 7 with an inclination angle between 30° and 45°. These grilles are formed by stamping or cutting and their main function is to dissipate heat from the interior when the movable and fixed protective covers 52 come into contact. This inclination angle ensures good heat dissipation while preventing external dust and debris from entering the protective covers through the grilles 7. It also facilitates the drainage of rainwater and other liquids, further enhancing the performance of the protective structure.

[0042] When the plastic product prototyping machine 4 starts working, the drive shaft 3 drives the moving mold 2 towards the fixed mold 1. During the movement of the moving mold 2, the linkage drive mechanism 53 plays its role, the gear set 531 on the moving mold 2 rotates, driving the meshing rack 532 to move, thereby causing the movable protective cover 52 to descend synchronously with the moving mold 2. At this time, the slider 62 in the sliding assembly 6 slides smoothly along the slide rail 61, ensuring the smooth movement of the movable protective cover 52. When the moving mold 2 and the fixed mold 1 are closed, the movable protective cover 52 abuts against the fixed protective cover 51, forming a relatively closed protective space, further strengthening the protection of the high-temperature area. When the fixed mold 1 is in the initial position, the electromagnetic pin 541 of the safety locking device 54 engages with the locking plate 542, restricting the accidental movement of the fixed mold 1 and ensuring the safety of the operator when not working. Throughout the working process, the heat insulation and sealing design effectively blocks heat transfer and dust ingress, while the heat dissipation grille 7 promptly dissipates the internal accumulated heat, ensuring the normal operation of the protective structure and the prototyping machine.

[0043] In summary, the protective structure of the plastic product prototyping machine 4 effectively protects operators and improves the stability and reliability of the machine through the reasonable spatial arrangement of its components, tight installation, and collaborative working mechanism. It demonstrates good implementation results and application prospects. In actual production, the protective structure can be appropriately adjusted and optimized according to different plastic product prototyping needs to meet diverse production requirements.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A protective structure for a plastic product prototyping machine, comprising a fixed mold (1), a moving mold (2), a drive shaft (3), and a protective assembly (5), wherein the drive shaft (3) is used to drive the moving mold (2) to perform an opening and closing motion relative to the fixed mold (1), characterized in that: The protective assembly (5) includes a fixed protective cover (51), a movable protective cover (52), a linkage drive mechanism (53), and a safety locking device (54). The fixed protective cover (51) is installed on the plastic product prototyping machine (4) and is used to cover the non-working area of ​​the fixed mold (1). The movable protective cover (52) is used to cover the working area of ​​the moving mold (2). The linkage drive mechanism (53) includes a gear set (531) and a rack (532). The gear set (531) is rotatably supported on the moving mold (2). The rack (532) is arranged vertically on the movable protective cover (52) and meshes with the gear set (531). When the drive shaft (3) drives the moving mold (2) to move, the movable protective cover (52) moves in the same direction as the drive shaft (3) through the cooperation of the gear set (531) and the rack (532).

2. The protective structure for a plastic product prototyping machine according to claim 1, characterized in that: The linkage drive mechanism (53) also includes an adjustable link. One end of the adjustable link is connected to the moving mold (2), and the other end of the adjustable link is connected to the movable protective cover (52). The adjustable link is used to adjust the height difference between the moving mold (2) and the movable protective cover (52) in the vertical direction.

3. The protective structure for a plastic product prototyping machine according to claim 1, characterized in that: The inner walls of both the fixed protective cover (51) and the movable protective cover (52) are coated with a ceramic fiber heat insulation layer, and the outer walls of both the fixed protective cover (51) and the movable protective cover (52) are coated with a high-temperature resistant silicone sealing layer.

4. The protective structure for a plastic product prototyping machine according to claim 1, characterized in that: The gear set (531) includes a first gear (5311), a second gear (5312), and a third gear (5313). The first gear (5311), the second gear (5312), and the third gear (5313) mesh with each other. The rack (532) meshes with the third gear (5313). When the drive shaft (3) drives the rack (532) to move through the gear set (531), the travel distance of the drive shaft (3) is the same as the travel distance of the rack (532).

5. The protective structure for a plastic product prototyping machine according to claim 1, characterized in that: When the moving mold (2) and the fixed mold (1) are closed, the movable protective cover (52) abuts against the fixed protective cover (51).

6. The protective structure for a plastic product prototyping machine according to claim 1, characterized in that: The safety locking device (54) includes an electromagnetic pin (541) and a locking plate (542). The electromagnetic pin (541) is disposed on the movable protective cover (52), and the locking plate (542) is disposed on the plastic product prototyping machine (4). The electromagnetic pin (541) is electrically connected to the controller of the plastic product prototyping machine (4). When the fixed mold (1) is in the initial position, the electromagnetic pin (541) and the locking plate (542) are attracted together.

7. The protective structure for a plastic product prototyping machine according to claim 1, characterized in that: It also includes a sliding assembly (6), which includes a slide rail (61) and a slider (62). The slider (62) is disposed on the movable protective cover (52). The slide rail (61) and the rack (532) are disposed in the same direction on the moving mold (2), and the slider (62) slides and engages with the slide rail (61).

8. The protective structure for a plastic product prototyping machine according to claim 1, characterized in that: The fixed protective cover (51) is provided with a heat dissipation grille (7), the tilt angle of the heat dissipation grille (7) is set between 30° and 45°, and the heat dissipation grille (7) is used to dissipate the heat inside when the movable protective cover (52) and the fixed protective cover (51) come into contact.

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