Rapid demolding structure for injection molding shell

Abstract

The utility model discloses a quick demoulding structure for an injection molding shell, and relates to the technical field of plastic processing, the quick demoulding structure comprises a lower die set, the inner wall of the lower die set is rotatably connected with a protective door, the inner wall of the top of the lower die set is provided with a plurality of positioning holes, the inner walls of the plurality of positioning holes are connected with positioning shafts in a sliding manner, and the positioning shafts are connected with the protective door. The water pump is arranged, when the water pump starts to operate, water in the water tank can be pumped out through the water pumping pipe and then is conveyed to the circulating heat dissipation pipe through the water conveying pipe, when the water enters the circulating heat dissipation pipe, heat dissipated by the injection mold can be cooled, and when the water completes one circulation in the circulating heat dissipation pipe, the cooling effect is good. When the injection molding raw materials are cooled, the injection molding raw materials return to the interior of the water tank through the circulating pipe, and the circulation is repeated, so that the injection molding mold is cooled, the effect of quickly cooling the injection molding raw materials is achieved, the cooling speeds of all parts of a plastic shell are consistent, and the product deformation and shrinkage defects caused by non-uniform cooling are effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of plastic processing technology, and in particular relates to a quick demolding structure for injection molded shells. Background Technology

[0002] With the widespread application of injection molding technology, the production efficiency and quality of injection molded shells have become the core focus of many manufacturing enterprises. Injection molding technology plays an irreplaceable role in many industries such as electronics, automobiles, and toys due to its advantage of being able to produce complex-shaped plastic products in large quantities and with high precision. However, the demolding process has always been a key bottleneck in the injection molding production process.

[0003] Existing equipment typically allows the injection-molded shell to cool down naturally after molding. However, the natural cooling rate of the plastic shell is too slow, and a large amount of heat may still accumulate inside. When demolding, the shell temperature is too high, and the plastic is still in a high-temperature softened state. Under the action of demolding force, the shell is very easy to deform due to uneven local stress, which may cause dents, bends and other problems on the surface of the shell. Therefore, we propose a rapid demolding structure for injection-molded shells. Utility Model Content

[0004] The purpose of this utility model is to provide a quick demolding structure for injection molded shells. By using a circulating heat dissipation mechanism and a quick demolding mechanism, it solves the problem that existing equipment generally allows the plastic shell to cool down naturally after injection molding. However, the natural cooling speed of the plastic shell is too slow, and a large amount of heat may still accumulate inside. When demolding, the shell temperature is too high, and the plastic is still in a high-temperature softened state. Under the action of demolding force, the shell is very easy to deform due to uneven local stress, which may cause the shell surface to have dents, bends, etc.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a quick demolding structure for injection molded shells, including a lower mold assembly. A protective door is rotatably connected to the inner wall of the lower mold assembly. Several positioning holes are opened on the top inner wall of the lower mold assembly. Positioning shafts are slidably connected to the inner walls of the positioning holes. An upper mold assembly is fixedly connected to the top outer wall of the positioning shafts. An injection port is opened on the top inner wall of the upper mold assembly. A circulating heat dissipation mechanism is provided on the inner wall of the lower mold assembly.

[0007] The circulating heat dissipation mechanism includes a water tank, the outer wall of which is fixedly connected to the outer wall of the lower module. The inner wall of the water tank has a water inlet. A fixing block is fixedly connected to the outer wall of the water tank on the side away from the water inlet. A water pump is fixedly connected to the inner wall of the fixing block. A water pump is fixedly connected to the bottom output end of the water pump. The water pump passes through the water tank to the inner wall. A water delivery pipe is fixedly connected to the outer wall of the water pump on the side away from the water pump.

[0008] Furthermore, a circulating heat dissipation pipe is fixedly connected to the outer wall of the end of the water supply pipe away from the water pump. A fixing groove is opened on the inner wall of the lower module. The inner wall of the fixing groove is fixedly connected to the outer wall of the circulating heat dissipation pipe. A circulating pipe is fixedly connected to the outer wall of the circulating heat dissipation pipe on the side near the water supply pipe. The outer wall of the end of the circulating pipe away from the circulating heat dissipation pipe is fixedly connected to the inner wall of the water tank. The circulating pipe passes through the water tank to the inner wall. A quick demolding mechanism is provided on the inner wall of the lower module.

[0009] Furthermore, the rapid demolding mechanism includes an injection mold, the outer wall of which is fixedly connected to the outer wall of the circulating heat dissipation pipe, a motor fixing plate is fixedly connected to the inner wall of the lower mold assembly, a first motor is fixedly connected to the outer wall of the motor fixing plate, and a rotating shaft is fixedly connected to the bottom output end of the first motor through a coupling.

[0010] Furthermore, a turntable is fixedly connected to the outer wall of the end of the rotating shaft away from the first motor, and a drive shaft is fixedly connected to the outer wall of the turntable away from the rotating shaft.

[0011] Furthermore, the inner wall of the injection mold is slidably connected with a sliding shaft, and the inner wall of the injection mold is slidably connected with a plurality of sliding shafts.

[0012] Furthermore, each of the sliding shafts 2 has a pressure spring sleeved on its outer wall, and each of the sliding shafts 2 has a push plate 2 fixedly connected to its outer wall at the end away from the pressure spring.

[0013] Furthermore, a push plate is fixedly connected to the outer wall of the end of the sliding shaft near the push plate 2, and a fixing plate is fixedly connected to the outer wall of both the sliding shaft and the end of the sliding shaft away from the injection mold.

[0014] Furthermore, a connecting plate is fixedly connected to the outer wall of one end of the sliding shaft near the fixed plate, and a groove is provided on the inner wall of the connecting plate, and the inner wall of the groove is slidably connected to the outer wall of the transmission shaft.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model incorporates a water pump. When the pump starts operating, it draws water from the tank through a pumping pipe and then transmits it to a circulating cooling pipe through a delivery pipe. As the water enters the circulating cooling pipe, it cools the heat emitted from the injection mold. After completing one cycle in the circulating cooling pipe, the water returns to the tank through the circulation pipe. This continuous cycle cools the injection mold, achieving rapid cooling of the injection molding material. This ensures that all parts of the plastic shell cool at a uniform rate, effectively reducing product deformation and shrinkage defects caused by uneven cooling.

[0017] 2. This utility model incorporates a sliding mechanism. When the sliding shaft moves upward, it drives the fixed plate upward. When the fixed plate moves upward, it drives the four sliding shafts to move upward together. At this time, the push plates on the sliding shafts and the push plates push the molded shell upward, thereby quickly separating the shell from the injection mold and achieving a rapid demolding effect. This greatly increases the actual production time of the equipment and significantly improves the product output per unit time.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the circulating heat dissipation pipe structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the positioning shaft structure of this utility model;

[0024] Figure 5 This is a sectional view of the fixing plate structure of this utility model;

[0025] Figure 6 This utility model Figure 5 Enlarged view of point A in the middle.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Lower Module; 101. Protective Door; 102. Upper Module; 103. Injection Port; 104. Positioning Shaft; 105. Positioning Hole; 2. Circulating Heat Dissipation Mechanism; 201. Water Tank; 202. Water Inlet; 203. Fixing Block; 204. Water Pump; 205. Water Pumping Pipe; 206. Water Supply Pipe; 207. Circulating Heat Dissipation Pipe; 208. Circulating Pipe; 209. Fixing Groove; 3. Quick Demolding Mechanism; 301. Motor Fixing Plate; 302. First Motor; 303. Rotating Shaft; 304. Turntable; 305. Drive Shaft; 306. Connecting Plate; 307. Groove; 308. Sliding Shaft; 309. Fixing Plate; 310. Sliding Shaft II; 311. Pressure Spring; 312. Push Plate; 313. Push Plate II; 314. Injection Mold. Detailed Implementation

[0028] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-6 As shown, this utility model is a quick demolding structure for injection molded shells, including a lower mold assembly 1. A protective door 101 is rotatably connected to the inner wall of the lower mold assembly 1. Several positioning holes 105 are opened on the top inner wall of the lower mold assembly 1. Positioning shafts 104 are slidably connected to the inner walls of the several positioning holes 105. The positioning shafts 104 cooperate with the positioning holes 105 to facilitate the installation of the upper mold assembly 102. The upper mold assembly 102 is fixedly connected to the top outer wall of the several positioning shafts 104. An injection port 103 is opened on the top inner wall of the upper mold assembly 102. A circulating heat dissipation mechanism 2 is provided on the inner wall of the lower mold assembly 1.

[0030] The circulating heat dissipation mechanism 2 includes a water tank 201. The outer wall of the water tank 201 is fixedly connected to the outer wall of the lower module 1. An inlet 202 is provided on the inner wall of the water tank 201 to facilitate the addition of water. A fixing block 203 is fixedly connected to the outer wall of the water tank 201 on the side away from the inlet 202. A water pump 204 is fixedly connected to the inner wall of the fixing block 203. A suction pipe 205 is fixedly connected to the bottom output end of the water pump 204. The suction pipe 205 passes through the water tank 201 to the inner wall. When the water pump 204 starts operating, it draws water from the water tank 201 through the suction pipe 205. A water delivery pipe 206 is fixedly connected to the outer wall of the water pump 204 on the side away from the suction pipe 205. A circulating heat dissipation pipe 207 is fixedly connected to the outer wall of one end of the water pump 204. The circulating heat dissipation pipe 207 circulates the water entering the mold 314. A fixing groove 209 is provided on the inner wall of the lower mold 1. The inner wall of the fixing groove 209 is fixedly connected to the outer wall of the circulating heat dissipation pipe 207. A circulation pipe 208 is fixedly connected to the outer wall of the circulating heat dissipation pipe 207 near the water supply pipe 206. The circulation pipe 208 is used to transport the circulated water back to the water tank 201 for cooling. The outer wall of the circulation pipe 208 away from the circulating heat dissipation pipe 207 is fixedly connected to the inner wall of the water tank 201. The circulation pipe 208 passes through the water tank 201 to the inner wall. A quick demolding mechanism 3 is provided on the inner wall of the lower mold 1.

[0031] The quick demolding mechanism 3 includes an injection mold 314. The outer wall of the injection mold 314 is fixedly connected to the outer wall of the circulating heat dissipation pipe 207. The inner wall of the lower mold 1 is fixedly connected to a motor fixing plate 301. The motor fixing plate 301 is used to fix the first motor 302 so that it is more stable during operation. The outer wall of the motor fixing plate 301 is fixedly connected to the first motor 302. The bottom output end of the first motor 302 is fixedly connected to a rotating shaft 303 through a coupling. The outer wall of the rotating shaft 303 away from the first motor 302 is fixedly connected to a turntable 304. The outer wall of the turntable 304 away from the rotating shaft 303 is fixedly connected to a transmission shaft 305. The inner wall of the injection mold 314 is slidably connected to a sliding shaft 308. Since the connecting plate 306 is restricted by 308, when the transmission shaft 305 rotates, it will drive the connecting plate 306 to move up and down reciprocally. The inner wall of the injection mold 314 is slidably connected to several sliding shafts 310.

[0032] A pressure spring 311 is fitted on the outer wall of several sliding shafts 310. The pressure spring 311 is used to drive the sliding shaft 308 and the sliding shaft 310 to quickly reset. A push plate 313 is fixedly connected to the outer wall of the end of the sliding shaft 310 away from the pressure spring 311. A push plate 312 is fixedly connected to the outer wall of the end of the sliding shaft 308 near the push plate 313. A fixing plate 309 is fixedly connected to the outer wall of the sliding shaft 308 and the end of the sliding shaft 308 away from the injection mold 314. The push plate 313 and the push plate 312 on the sliding shaft 310 will push the molded shell upward, thereby making the shell separate from the injection mold 314 quickly. A connecting plate 306 is fixedly connected to the outer wall of the end of the sliding shaft 308 near the fixing plate 309. A groove 307 is opened on the inner wall of the connecting plate 306. The inner wall of the groove 307 is slidably connected to the outer wall of the transmission shaft 305.

[0033] One specific application of this embodiment is:

[0034] When the equipment is needed, the operator first adds an appropriate amount of water to the inlet 202, then pours the raw materials required for injection molding into the injection mold 314 through the injection port 103. Next, the water pump 204 is started. When the water pump 204 starts running, it draws water from the water tank 201 through the suction pipe 205, and then transmits it to the circulating heat dissipation pipe 207 through the water delivery pipe 206. When the water enters the circulating heat dissipation pipe 207, it cools the heat dissipated from the injection mold 314. As the water circulates for heat dissipation... When a cycle is completed in pipe 207, the material returns to the water tank 201 through circulation pipe 208. This continuous circulation cools the injection mold 314, thereby rapidly cooling the injection molding material. Once cooled, the material forms the shape on the mold. At this point, the worker removes the upper mold assembly 102 from the lower mold assembly 1 and then starts the first motor 302. When the first motor 302 starts running, it drives the rotating shaft 303 to rotate, which in turn drives the turntable 304. When the turntable 304 rotates, it drives the drive shaft 305 to rotate. Because the connecting plate 306 is restricted by 308, the rotation of the drive shaft 305 causes the connecting plate 306 to move up and down reciprocally. When the connecting plate 306 begins to move upwards, it drives the sliding shaft 308 to move upwards. When the sliding shaft 308 moves upwards, it drives the fixed plate 309 to move upwards. When the fixed plate 309 moves upwards, it drives all four sliding shafts 310 to move upwards simultaneously. At this time, the sliding shaft 30... The push plates 313 and 312 on the sliding shaft 310 will push the molded shell upward, thereby quickly separating the shell from the injection mold 314. When the sliding shaft 310 moves upward, it will squeeze the pressure spring 311. When the pressure spring 311 is squeezed, it will contract. When the fixed plate 309 begins to descend, the pressure spring 311 will drive the fixed plate 309 to quickly reset. Then the fixed plate 309 will drive the sliding shaft 308 and the sliding shaft 310 to quickly reset.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A quick demolding structure for injection-molded housings, comprising a lower mold assembly (1), characterized in that: The lower module (1) is rotatably connected to a protective door (101) on its inner wall. The upper inner wall of the lower module (1) is provided with several positioning holes (105). The inner walls of the several positioning holes (105) are slidably connected to positioning shafts (104). The upper module (102) is fixedly connected to the upper outer wall of the several positioning shafts (104). The upper inner wall of the upper module (102) is provided with an injection port (103). The lower module (1) is provided with a circulating heat dissipation mechanism (2) on its inner wall. The circulating heat dissipation mechanism (2) includes a water tank (201), the outer wall of the water tank (201) is fixedly connected to the outer wall of the lower module (1), the inner wall of the water tank (201) is provided with a water inlet (202), a fixing block (203) is fixedly connected to the outer wall of the water tank (201) away from the water inlet (202), a water pump (204) is fixedly connected to the inner wall of the fixing block (203), a water pump (204) is fixedly connected to the bottom output end of the water pump (204), the water pump (205) passes through the water tank (201) to the inner wall, and a water delivery pipe (206) is fixedly connected to the outer wall of the water pump (204) away from the water pump (205).

2. The quick demolding structure for injection molded housing according to claim 1, characterized in that, A circulating heat dissipation pipe (207) is fixedly connected to the outer wall of the end of the water supply pipe (206) away from the water pump (204). A fixing groove (209) is opened on the inner wall of the lower module (1). The inner wall of the fixing groove (209) is fixedly connected to the outer wall of the circulating heat dissipation pipe (207). A circulating pipe (208) is fixedly connected to the outer wall of the circulating heat dissipation pipe (207) on the side close to the water supply pipe (206). The outer wall of the end of the circulating pipe (208) away from the circulating heat dissipation pipe (207) is fixedly connected to the inner wall of the water tank (201). The circulating pipe (208) penetrates the water tank (201) to the inner wall. A quick demolding mechanism (3) is provided on the inner wall of the lower module (1).

3. The quick demolding structure for injection molded housing according to claim 2, characterized in that, The quick demolding mechanism (3) includes an injection mold (314), the outer wall of which is fixedly connected to the outer wall of the circulating heat dissipation pipe (207), the inner wall of the lower module (1) is fixedly connected to a motor fixing plate (301), the outer wall of which is fixedly connected to a first motor (302), and the bottom output end of the first motor (302) is fixedly connected to a rotating shaft (303) via a coupling.

4. The quick demolding structure for injection molded housing according to claim 3, characterized in that, A turntable (304) is fixedly connected to the outer wall of the end of the rotating shaft (303) away from the first motor (302), and a transmission shaft (305) is fixedly connected to the outer wall of the turntable (304) away from the rotating shaft (303).

5. The quick demolding structure for injection molded housing according to claim 4, characterized in that, The inner wall of the injection mold (314) is slidably connected to a sliding shaft (308), and the inner wall of the injection mold (314) is slidably connected to a plurality of sliding shafts (310).

6. The quick demolding structure for injection-molded housing according to claim 5, characterized in that, A pressure spring (311) is sleeved on the outer wall of each of the sliding shafts (310), and a push plate (313) is fixedly connected to the outer wall of the end of each sliding shaft (310) away from the pressure spring (311).

7. The quick demolding structure for injection-molded housing according to claim 6, characterized in that, A push plate (312) is fixedly connected to the outer wall of the sliding shaft (308) near the push plate (313), and a fixing plate (309) is fixedly connected to the outer wall of the sliding shaft (308) away from the injection mold (314).

8. The quick demolding structure for injection molded housing according to claim 7, characterized in that, A connecting plate (306) is fixedly connected to the outer wall of one end of the sliding shaft (308) near the fixed plate (309). A groove (307) is provided on the inner wall of the connecting plate (306), and the inner wall of the groove (307) is slidably connected to the outer wall of the transmission shaft (305).

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