Polystyrene injection molding machine with automatic temperature control function

Abstract

The utility model belongs to the field of injection molding machines, and particularly relates to a polystyrene injection molding machine with an automatic temperature control function, which comprises a case, an injection molding tank is fixedly mounted at the upper end of the case, a melt tank is fixedly connected to the upper end of the injection molding tank, and a feeding cover is connected to the upper end of the melt tank through threads. And an inner threaded pipe is installed in the upper end of the feeding cover through a bearing, a screw is connected to the interior of the inner threaded pipe through threads, and a locking mechanism is arranged on the outer side of the feeding cover. The inner threaded pipe, the screw rod, the locking mechanism and the like are additionally arranged on the feeding cover, so that the depth of the temperature probe can be adjusted through threaded fit between the inner threaded pipe and the screw rod according to the amount of raw materials in the melt box in the using process, the probe can be located in the middle layer of the raw materials all the time, and the temperature of the melt box can be accurately measured. The temperature monitoring can be more accurate, so that the temperature adjustment can be more accurate.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, specifically to a polystyrene injection molding machine with automatic temperature control function. Background Technology

[0002] When producing workpieces made from polystyrene, molten raw material can be injected into the mold through an injection molding machine for cooling and molding. According to patent authorization announcement number CN212707691U, a polystyrene foam material injection molding machine is disclosed. This utility model relates to the field of injection molding machine technology and includes a polystyrene foam material injection molding machine. The machine body is connected to a feeding hopper via a pipe. The feeding hopper is equipped with a connecting plate and a guide pipe. The connecting plate is fixedly connected to the inner wall of the upper end of the feeding hopper by screws. The guide pipe is connected to the outer surface of the feeding hopper via threads. A metering hopper is provided on the guide pipe. A servo motor is located in the middle of the connecting plate. The servo motor is connected to a stirring rod via a bearing. The lower end of the stirring rod is connected to a fixing plate via a fixing plate.

[0003] However, existing injection molding machines require melting the raw material in a molten tub before injecting it into the injection tank. Excessive heating during this process can cause the material to deteriorate, affecting the strength of the workpiece. Furthermore, temperature monitoring is necessary for temperature control, but variations in probe depth within the material can lead to temperature discrepancies, impacting heating quality. Therefore, improvements to the existing technology are needed. Utility Model Content

[0004] The purpose of this invention is to provide a polystyrene injection molding machine with automatic temperature control function, which solves the problems of inaccurate temperature detection and inconvenience in temperature control.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a polystyrene injection molding machine with automatic temperature control function, comprising a machine casing, an injection tank fixedly installed at the upper end of the machine casing, a molten material tank fixedly connected to the upper end of the injection tank, a feeding cover threadedly connected to the upper end of the molten material tank, an internally threaded tube installed inside the upper end of the feeding cover via a bearing, a screw threadedly connected inside the internally threaded tube, a locking mechanism provided on the outer side of the feeding cover, a temperature probe fixedly connected to one end of the screw located inside the molten material tank, a guide plate fixedly connected to the outer side of the temperature probe, a temperature regulating cover fixedly connected to the outer side of the molten material tank, a heating element fixedly connected inside the temperature regulating cover, a return pipe fixedly connected to the upper left part of the temperature regulating cover, and a cold water pipe fixedly connected to the lower right part of the temperature regulating cover.

[0006] Preferably, a handwheel is fixedly connected to the upper outer side of the internally threaded tube, and a sealing sleeve is rotatably connected to the lower outer side of the internally threaded tube. The sealing sleeve is fixedly connected to the feeding cover, and the sealing sleeve can seal the connection between the internally threaded tube and the feeding cover.

[0007] Preferably, a guide rod frame is slidably connected inside the guide plate, and the guide rod frame is fixedly connected to the inner wall of the melting tank. The guide rod frame can guide the movement of the guide plate.

[0008] Preferably, a molding die is fixedly installed on the upper end of the chassis, and a hydraulic cylinder is installed on the upper end of the chassis. The output end of the hydraulic cylinder is fixedly connected to the mold cover of the molding die, and the hydraulic cylinder can drive the mold cover of the molding die to move.

[0009] Preferably, the locking mechanism includes a fixing frame, a fixing frame is fixedly connected to the outer side of the feeding cover, a pull ring rod is slidably connected inside the fixing frame, a limit frame is fixedly connected to one end of the pull ring rod near the internal threaded tube, a gear is fixedly connected to the middle of the outer side of the internal threaded tube, and a spring is provided on the outer side of the pull ring rod, so that the pull ring rod can drive the limit frame to move.

[0010] Preferably, the limiting frame is slidably connected to the tooth groove of the gear, and the limiting frame is slidably connected to the feeding cover. The limiting frame can limit the internal threaded tube through the gear.

[0011] Preferably, one end of the spring is fixedly connected to the limiting frame, and the other end of the spring is fixedly connected to the fixing frame. The spring can automatically reset the limiting frame through its elastic force.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model adds an internally threaded tube, a screw, and a locking mechanism to the feeding cover. During use, the depth of the temperature probe can be adjusted according to the amount of raw material inside the melting tank by the threaded engagement between the internally threaded tube and the screw. This allows the probe to be positioned in the middle layer of the raw material, making temperature monitoring more accurate and temperature regulation more precise.

[0014] 2. This utility model adds a temperature regulating cover, a cold water pipe and an electric heating tube to the outside of the melting tank. When the temperature inside the melting tank is too high, cooling can be injected through the inside of the temperature regulating cover and the cold water pipe. The cold water can cool the melting tank during the flow process, which can effectively prevent the raw material temperature from being too high. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 For the present utility model Figure 1 A partial three-dimensional sectional view of the structure;

[0017] Figure 3 For the present utility model Figure 1 Enlarged front sectional view of the melting tank;

[0018] Figure 4 For the present utility model Figure 2 Enlarged view of the structure of part A.

[0019] In the diagram: 1. Chassis; 2. Injection tank; 3. Melting tank; 4. Feed cover; 5. Internally threaded pipe; 6. Screw; 7. Locking mechanism; 8. Handwheel; 9. Temperature probe; 10. Sealing sleeve; 11. Guide rod bracket; 12. Guide plate; 13. Temperature control cover; 14. Heating element; 15. Return pipe; 16. Cold water pipe; 17. Hydraulic cylinder; 18. Molding mold; 71. Fixing frame; 72. Pull ring rod; 73. Limiting frame; 74. Gear; 75. Spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 , Figure 2 , Figure 3 A polystyrene injection molding machine with automatic temperature control function includes a machine casing 1. An injection tank 2 is fixedly installed on the upper end of the machine casing 1. A melting tank 3 is fixedly connected to the upper end of the injection tank 2. A feeding cover 4 is threadedly connected to the upper end of the melting tank 3. An internally threaded tube 5 is installed inside the upper end of the feeding cover 4 through a bearing. A screw 6 is threadedly connected to the inside of the internally threaded tube 5. A locking mechanism 7 is provided on the outside of the feeding cover 4. A temperature probe 9 is fixedly connected to one end of the screw 6 inside the melting tank 3. A guide plate 12 is fixedly connected to the outside of the temperature probe 9. A temperature regulating cover 13 is fixedly connected to the outside of the melting tank 3. An electric heating tube 14 is fixedly connected inside the temperature regulating cover 13. A return pipe 15 is fixedly connected to the upper left part of the temperature regulating cover 13. A cold water pipe 16 is fixedly connected to the lower right part of the temperature regulating cover 13.

[0022] Please see Figure 1 , Figure 2 , Figure 3A handwheel 8 is fixedly connected to the upper outer side of the internally threaded pipe 5, and a sealing sleeve 10 is rotatably connected to the lower outer side of the internally threaded pipe 5. The sealing sleeve 10 is fixedly connected to the feeding cover 4. The sealing sleeve 10 can seal the connection between the internally threaded pipe 5 and the feeding cover 4. A guide rod frame 11 is slidably connected inside the guide plate 12. The guide rod frame 11 is fixedly connected to the inner wall of the melting tank 3. The guide rod frame 11 can guide the movement of the guide plate 12. A forming mold 18 is fixedly installed at the upper end of the machine box 1. A hydraulic cylinder 17 is installed at the upper end of the machine box 1. The output end of the hydraulic cylinder 17 is fixedly connected to the mold cover of the forming mold 18. The hydraulic cylinder 17 can drive the mold cover of the forming mold 18 to move.

[0023] Please see Figure 1 , Figure 2 , Figure 4 The locking mechanism 7 includes a fixed frame 71. The fixed frame 71 is fixedly connected to the outside of the feeding cover 4. A pull ring rod 72 is slidably connected inside the fixed frame 71. A limit frame 73 is fixedly connected to one end of the pull ring rod 72 near the internal threaded tube 5. A gear 74 is fixedly connected to the middle of the outside of the internal threaded tube 5. A spring 75 is provided on the outside of the pull ring rod 72. The pull ring rod 72 can drive the limit frame 73 to move. The limit frame 73 is slidably connected to the tooth groove of the gear 74. The limit frame 73 is slidably connected to the feeding cover 4. The limit frame 73 can limit the internal threaded tube 5 through the gear 74. One end of the spring 75 is fixedly connected to the limit frame 73. The other end of the spring 75 is fixedly connected to the fixed frame 71. The spring 75 can automatically reset the limit frame 73 through its elastic force.

[0024] The specific implementation process of this utility model is as follows: In use, pull the pull ring rod 72, and the pull ring rod 72 drives the limit frame 73 to move. During the movement, the limit frame 73 compresses the spring 75. When the limit frame 73 disengages from the gear 74, the limitation on the internal threaded tube 5 can be released. Then, turn the handwheel 8, and the handwheel 8 drives the internal threaded tube 5 to rotate. During the rotation, the internal threaded tube 5 can drive the temperature probe 9 to move through the threaded engagement with the screw 6. After the temperature probe 9 moves to the predetermined position, release the pull ring rod 72, and the spring 75 returns to its original position. The spring 75 can drive the limit frame 73 to engage inside the tooth groove of the gear 74 through its elastic force, thus completing the limitation on the gear 74 and the internal threaded tube 5, thereby making the temperature monitoring more accurate.

[0025] During the melting process, when the internal temperature of the melting tank 3 is too high, the temperature probe 9 transmits the temperature to the processor inside the chassis 1. Then the water pump starts and injects cold water into the temperature control hood 13 through the cold water pipe 16. When the cold water flows inside the temperature control hood 13, it can be discharged through the return pipe 15. The water flow can cool down the melting tank 3 during the flow process. At the same time, the water flow can be heated by the electric heating tube 14, which can prevent the raw material temperature from dropping too much and causing condensation.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polystyrene injection molding machine with automatic temperature control function, comprising a machine casing (1), characterized in that: An injection molding tank (2) is fixedly installed on the upper end of the casing (1). A melting tank (3) is fixedly connected to the upper end of the injection molding tank (2). A feeding cap (4) is threadedly connected to the upper end of the melting tank (3). An internally threaded tube (5) is installed inside the upper end of the feeding cap (4) through a bearing. A screw (6) is threadedly connected to the inside of the internally threaded tube (5). A locking mechanism (7) is provided on the outside of the feeding cap (4). The screw (6) is located at... A temperature probe (9) is fixedly connected to one end of the inside of the melting tank (3). A guide plate (12) is fixedly connected to the outside of the temperature probe (9). A temperature regulating cover (13) is fixedly connected to the outside of the melting tank (3). An electric heating tube (14) is fixedly connected inside the temperature regulating cover (13). A return pipe (15) is fixedly connected to the upper left part of the temperature regulating cover (13). A cold water pipe (16) is fixedly connected to the lower right part of the temperature regulating cover (13).

2. A polystyrene injection molding machine with automatic temperature control function according to claim 1, characterized in that: A handwheel (8) is fixedly connected to the upper outer side of the internally threaded tube (5), and a sealing sleeve (10) is rotatably connected to the lower outer side of the internally threaded tube (5). The sealing sleeve (10) is fixedly connected to the feeding cover (4).

3. A polystyrene injection molding machine with automatic temperature control function according to claim 1, characterized in that: The guide plate (12) is slidably connected to a guide rod frame (11), which is fixedly connected to the inner wall of the melting tank (3).

4. A polystyrene injection molding machine with automatic temperature control function according to claim 1, characterized in that: A molding die (18) is fixedly installed on the upper end of the casing (1), and a hydraulic cylinder (17) is installed on the upper end of the casing (1). The output end of the hydraulic cylinder (17) is fixedly connected to the mold cover of the molding die (18).

5. A polystyrene injection molding machine with automatic temperature control function according to claim 1, characterized in that: The locking mechanism (7) includes a fixing frame (71), which is fixedly connected to the outside of the feeding cover (4). A pull ring rod (72) is slidably connected inside the fixing frame (71). A limit frame (73) is fixedly connected to one end of the pull ring rod (72) near the internal threaded tube (5). A gear (74) is fixedly connected to the middle of the outside of the internal threaded tube (5). A spring (75) is provided on the outside of the pull ring rod (72).

6. A polystyrene injection molding machine with automatic temperature control function according to claim 5, characterized in that: The limiting frame (73) is slidably connected to the tooth groove of the gear (74), and the limiting frame (73) is slidably connected to the feeding cover (4).

7. A polystyrene injection molding machine with automatic temperature control function according to claim 5, characterized in that: One end of the spring (75) is fixedly connected to the limiting frame (73), and the other end of the spring (75) is fixedly connected to the fixing frame (71).

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