A plastic handicraft processing device capable of rapid cooling

Abstract

The utility model relates to the field of plastic product manufacturing, and discloses a plastic handicraft processing device capable of rapid cooling. The structure includes a mold body, the mold body includes an upper mold and a lower mold provided with a cavity, a confluence plate is detachably mounted on the back of the mold body, a flow channel group is arranged on a side of the confluence plate that is in contact with the mold body, and the flow channel group on the back of the mold body is cooperated to form a water flow channel. The utility model adopts a split water channel, and the water channel is arranged on the back of the mold body and the confluence plate. When designing the water channel, the cooling path can be made to be more in contact with the product texture and structure, so that the product can achieve a rapid and better cooling effect, and the water channel can be quickly processed through a simple tool path setting, reducing the risk of processing failure. When in use, it is only necessary to set a waterproof strip or a waterproof layer at the contact position, so that the imitation water channels on both sides are pressed together to form a water flow channel, and water flow can be introduced to cool the mold after the injection molding step is completed.

Description

Technical Field

[0001] The utility model relates to the field of plastic product manufacturing, in particular to a plastic handicraft processing device capable of rapid cooling. Background Art

[0002] The injection molding manufacturing process is a common and effective production method. It is a method of injecting molten plastic into a mold and obtaining the desired shape after cooling. It is a commonly used processing solution whether it is mass production in large factories or small-scale customization in small factories. In the injection molding process, the cooling time accounts for about 70% to 80% of the entire molding cycle, which is a more important part of the injection molding process.

[0003] Existing injection molds have cooling water channels in the molds. These channels use circulating cooling water to take away the heat of the molds, thereby cooling the molds. However, in the prior art, the water channels in the molds are processed by drilling holes on a milling machine to produce an internal water channel network. This water channel method not only has the risk of failure due to broken knives due to the long deep holes, but can only be arranged in a flat style, and is usually used on straight products. However, when faced with mold products with complex shapes, or flat product molds with complex reliefs, traditional water channels cannot be well distributed, which can easily lead to uneven cooling, thereby extending the injection molding cycle and increasing product deformation. Utility Model Content

[0004] In view of the above problems, the utility model provides a plastic handicraft processing device capable of rapid cooling, whose structure includes a mold body, the mold body including an upper mold and a lower mold, and the front sides of the upper mold and the lower mold are provided with cavities, and the cavities on both sides are pieced together to form the shape of the product, wherein a flow channel group is opened on the back side of the mold body, and a confluence plate is also detachably installed on the back side of the mold body, and a flow channel group is provided on a side of the confluence plate that is in contact with the mold body, and cooperates with the flow channel group on the back side of the mold body to form a water flow channel.

[0005] As a further feature of the utility model, the flow channel group includes a profiling water channel and an exchange channel, and the profiling water channel is distributed at the edge of the cavity and within the edge range of the cavity; the inlet and outlet water ends of the profiling water channel are connected to the exchange channel, and the exchange channel extends outward on the mold body and the confluence plate and is connected to an external water supply device through a pipe joint.

[0006] As a further feature of the utility model, the profiling water channel cooperates with the mold cavity, and the profiling water channel is distributed along the trend of the lines in the mold cavity; the profiling water channel is gathered and arranged in the part with large height difference of the lines in the mold cavity.

[0007] As a further feature of the utility model, the cross-section of the profiled waterway is semicircular, square or stepped.

[0008] As a further feature of the utility model, the edge of the profiled waterway on one side is provided with a sealing strip or a sealing coating and fits with the edge of the profiled waterway on the other side.

[0009] As a further feature of the utility model, the mold body is provided with fixing pins at the four corners of the runner group, and a fixing frame is provided on the fixing pin, and the fixing frame includes a base pressure plate and a side arm, the base pressure plate is pressed on the middle part of the confluence plate, and the side arm extends to all sides on the base pressure plate and is nested on the fixing pin; the fixing pin is provided with a thread, and the side arm nested on the fixing pin is fixed to the fixing pin by locking with a nut.

[0010] As a further feature of the utility model, the side arm is inclined on the base pressure plate, and the straight-line distance from one end of the side arm embedded in the fixing pin to the junction plate is smaller than the straight-line distance from the base pressure plate to the junction plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model adopts a split water channel, which is arranged on the back of the mold body and the confluence plate. When designing the water channel, the cooling path can be more closely fitted to the distribution of product texture and structure. Since the cooling is more targeted, not only the cooling effect is better, but also the overall cooling time is shortened, so that the product can achieve a better cooling effect. In addition, the water channel can be quickly processed through a simple tool path setting, reducing the risk of processing failure. When in use, it is only necessary to set a waterproof strip or a waterproof layer at the fitting position, so that the imitation water channels on both sides are pressed together to form a water flow channel, and water can be introduced to cool the mold at the end of the injection molding step. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic diagram of the overall structure of a plastic handicraft processing device capable of rapid cooling.

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the cooperation between the mold body of the utility model and the flow channel group on the confluence plate.

[0015] Figure 3 It is a schematic diagram of the side section structure of the junction plate of the utility model cooperating with the mold body through the fixing frame.

[0016] In the figure: 1. mold body; 2. confluence plate; 3. runner group; 4. fixing pin; 5. fixing frame; 1a. cavity; 3a. imitation water channel; 3b. exchange channel; 51. base pressure plate; 52. side arm. DETAILED DESCRIPTION

[0017] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] Examples, such as Figure 1-Figure 3 As shown: The utility model provides a plastic handicraft processing device capable of rapid cooling, and its structure includes a mold body 1, the mold body 1 includes an upper mold and a lower mold, and the front of the upper mold and the lower mold is provided with a cavity 1a, the cavities 1a on both sides are spliced ​​to form a product shape, and an injection channel is provided at the top of the cavity 1a, which is used to guide the plastic in the injection molding machine to flow into the cavity 1a. In this embodiment, a flow channel group 3 is opened on the back of the mold body 1, and a confluence plate 2 is also detachably installed on the back of the mold body 1. The confluence plate 2 is provided with a flow channel group 3 on a side that is in contact with the mold body 1 and cooperates with the flow channel group 3 on the back of the mold body 1 to form a water flow channel;

[0019] Specifically, the flow channel group 3 includes a profiling water channel 3a and an exchange channel 3b. The profiling water channel 3a and the exchange channel 3b are assembled and matched between the flow channel group 3 and the mold body 1 to form a water flow channel. The profiling water channel 3a is distributed at the edge of the cavity 1a corresponding to the back of the mold body 1 and within the edge range of the cavity 1a, that is, the cooling range covers the part corresponding to the cavity 1a on the back of the mold body 1. The water inlet and outlet ends of the profiling water channel 3a are connected to the exchange channel 3b. The exchange channel 3b extends outward on the mold body 1 and the confluence plate 2 and is connected to the external water supply equipment through a pipe joint.

[0020] Among them, the profiling water channel 3a is matched with the cavity 1a. For some products with regular patterns, the profiling water channel 3a is distributed along the trend of the patterns in the cavity 1a. Similarly, on this basis, for those with more patterns and distributed in multiple places, these patterns and product performance will form a height difference, so that the inside of the cavity 1a also has a height difference. Therefore, the profiling water channel 3a is arranged in the part with large patterns and height difference in the cavity 1a, so that the cooling water flow is more in line with the product requirements;

[0021] Moreover, the cross-section of the profiling water channel 3a is semicircular, square or stepped. In the present embodiment, the square is preferred. After the cavity 1a of the mold body 1 is processed, it is only necessary to plan the profiling water channel 3a according to the characteristics of the cavity 1a, and then make it into a tool path. For example, plastic handicrafts processed by small and medium-sized processing plants are formed in a mold of 20cm*40cm. After the cavity 1a is processed, a milling cutter with a diameter of 6-10mm is used to make grooves on the back of the mold body 1 according to the tool path. Only one roughing route is required without fine processing, so that the processing speed is faster and there is no greater risk of tool breakage like processing deep holes for water channels. On this basis, after ensuring the flatness of the fitting surfaces of the mold body 1 and the junction plate 2 during processing, a sealing strip or a sealing coating is provided on the edge of the profiling water channel 3a on one side and fits with the edge of the profiling water channel 3a on the other side, thereby further increasing the airtightness on the basis of the extrusion fit between the mold body 1 and the junction plate 2.

[0022] At the same time, the mold body 1 is provided with fixing pins 4 at the four corners of the flow channel group 3, and the confluence plate 2 is provided with corresponding through holes for positioning and assembling with the fixing pins 4. The fixing frame 5 includes a base pressure plate 51 and a side arm 52. The base pressure plate 51 is pressed on the middle part of the confluence plate 2, and the side arm 52 extends in all directions on the base pressure plate 51 and is nested on the fixing pin 4. In this embodiment, the side arm 52 is inclined on the base pressure plate 51, and the straight-line distance from one end of the side arm 52 nested with the fixing pin 4 to the confluence plate 2 is smaller than the straight-line distance from the base pressure plate 51 to the confluence plate 2. In addition, the fixing pin 4 is provided with a thread, and the side arm 52 nested on the fixing pin 4 is fixed to the fixing pin 4 by a nut. The side arm 52 is driven by the locking of the nut to squeeze the middle base pressure plate 51 toward the confluence plate 2, thereby driving the confluence plate 2 to fit and lock against the back of the mold body 1 based on the middle imitation waterway 3a.

[0023] In the specific implementation, the hole of the junction plate 2 is aligned with the fixing pin 4, and the junction plate 2 is pressed to the back of the mold body 1 so that the flow channel groups 3 on both sides are fitted and merged, and then the fixing frame 5 is put on the fixing pin 4, and the fixing frame 5 is locked on the junction plate 2 with a nut so that the junction plate 2 is fitted to the back of the mold body 1, and then the exchange channel 3b is connected to the external water supply equipment through a pipe joint. After the mold body 1 performs the injection molding operation of the plastic craft, water is sent from one exchange channel 3b to the imitation water channel 3a through the water supply equipment for cooling and then sent out from another exchange channel 3b. Since the cooling is more targeted, not only the cooling effect is better, but also the overall cooling time is shortened, and the injection molded plastic craft is cooled quickly and better.

[0024] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A plastic handicraft processing device capable of rapid cooling, the structure of which includes a mold body, the mold body includes an upper mold and a lower mold, and the front of the upper mold and the lower mold are provided with a cavity, and the cavities on both sides are combined to form a product shape, characterized in that: A flow channel group is provided on the back of the mold body, and a confluence plate is detachably mounted on the back of the mold body. A flow channel group is provided on a side of the confluence plate that is in contact with the mold body and cooperates with the flow channel group on the back of the mold body to form a water flow channel.

2. A plastic handicraft processing device capable of rapid cooling according to claim 1, characterized in that: The flow channel group includes a profiled waterway and an exchange channel, and the profiled waterway is distributed at the edge of the cavity and within the edge range of the cavity; The water inlet and outlet ends of the profiling waterway are connected to the exchange channel, and the exchange channel extends outward from the mold body and the confluence plate and is connected to an external water supply device through a pipe joint.

3. A plastic handicraft processing device capable of rapid cooling according to claim 2, characterized in that: The profiling water channel is matched with the mold cavity, and the profiling water channel is distributed along the trend of the lines in the mold cavity; The profiling water channel is arranged in a concentrated manner at the part with large texture and height difference in the cavity.

4. The plastic handicraft processing device capable of rapid cooling according to claim 2, characterized in that: The cross section of the profiled waterway is semicircular, square or stepped.

5. The plastic handicraft processing device capable of rapid cooling according to claim 2, characterized in that: The edge of the profiled waterway on one side is provided with a sealing strip or a sealing coating and fits with the edge of the profiled waterway on the other side.

6. The plastic handicraft processing device capable of rapid cooling according to claim 2, characterized in that: The mold body is provided with fixing pins at the four corners of the flow channel group, and a fixing frame is provided on the fixing pin, and the fixing frame includes a base pressure plate and a side arm, the base pressure plate is pressed on the middle part of the confluence plate, and the side arm extends to all sides on the base pressure plate and is nested on the fixing pin; The fixing pin is provided with a thread, and the side arm nested on the fixing pin is fixed on the fixing pin by locking with a nut.

7. The plastic handicraft processing device capable of rapid cooling according to claim 6, characterized in that: The side arm is inclined on the base pressure plate, and the straight-line distance from one end of the side arm nested with the fixing pin to the junction plate is smaller than the straight-line distance from the base pressure plate to the junction plate.

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