Injection mold for processing plastic tableware

Abstract

The utility model relates to an injection mold for processing plastic tableware, which comprises an upper mold, a lower mold and a demolding component, the upper mold is opposite to the lower mold, the upper mold is connected with the lower mold to form an injection molding cavity, the upper mold is provided with an injection molding runner, the injection molding runner is divided into a plurality of sub-runners, each sub-runner is respectively communicated to the injection molding cavity, and the demolding component is arranged on the lower mold. The demolding assembly is used for separating the injection finished product from the injection cavity. The main injection molding runner is communicated to the mold outer glue injection assembly, the main injection molding runner is divided into a plurality of sub-runners at the upper mold, and the sub-runners are communicated to the injection molding cavity, so that multi-point injection molding and rapid and efficient injection molding can be realized, glue injection is more uniform, and the problems of non-uniform thickness, breakage and the like of a finished product caused by unbalanced flowing of glue in the injection molding process are avoided; and a good glue discharging effect is ensured, and the quality of an injection molding part is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to an injection mold. Background Art

[0002] There are many methods for plastic molding. Most plastic tableware is obtained by mold injection molding, which can quickly form plastic products with complex shapes and structures. The uneven injection molding in existing mold injection molding can easily lead to quality problems such as uneven thickness and cracking of the finished plastic tableware, affecting the quality of the plastic tableware. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide an injection mold for processing plastic tableware.

[0004] An injection mold for processing plastic tableware comprises an upper mold, a lower mold and a demoulding assembly, wherein the upper mold is arranged opposite to the lower mold, and the upper mold and the lower mold are connected to form an injection molding chamber, the upper mold is provided with an injection molding flow channel, the injection molding flow channel is branched to form a plurality of branch flow channels, each of the branch flow channels is respectively connected to the injection molding chamber, and the demoulding assembly is used to separate the injection molded product from the injection molding chamber.

[0005] In one embodiment, at least a portion of the runners are formed in the upper mold and the lower mold.

[0006] In one embodiment, the branch channels are symmetrically distributed along the center of the injection cavity.

[0007] In one embodiment, there are multiple injection molding chambers, and the injection molding chambers are arranged in an array.

[0008] In one embodiment, a branch channel is connected to each of the injection molding chambers respectively.

[0009] In one embodiment, a diameter of one end of the branch channel connected to the injection channel is larger than a diameter of one end of the branch channel connected to the injection cavity.

[0010] In one embodiment, the demoulding component is a pneumatic demoulding mechanism.

[0011] In one embodiment, a guide rod is further included, the upper mold is provided with a guide hole, and the guide rod is inserted into the guide hole.

[0012] In one embodiment, the demoulding assembly includes a screw rod and a demoulding module, the demoulding module is connected to the screw rod, the guide rod is drivingly connected to a demoulding cylinder, and the screw rod moves under the drive of the demoulding cylinder.

[0013] In one embodiment, a cooling component is further included, wherein the cooling component is used to cool the injection molding cavity.

[0014] The beneficial effects of the utility model are:

[0015] In the injection mold, the upper mold and the lower mold are arranged opposite to each other, and the upper mold and the lower mold are separated or combined by a driving mechanism. When the upper mold and the lower mold are combined and connected, an injection cavity is formed, and glue is injected into the injection cavity to form a plastic finished product. After cooling, it is separated from the mold through a demolding component to obtain a plastic finished tableware product. In this embodiment, the main injection flow channel is connected to the injection molding component outside the mold, and the main injection flow channel is divided into several branch flow channels at the upper mold. The branch flow channels are all connected to the injection cavity, which can realize multi-point injection molding, fast and efficient injection molding, and make the injection molding more uniform, avoiding the uneven thickness and cracking of the finished product caused by the uneven flow of the colloid during the injection molding process, ensuring a good glue discharge effect and improving the quality of the injection molded parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 The figure is a schematic structural diagram of an injection mold for processing plastic tableware according to an embodiment. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1 As shown, it is an injection mold for processing plastic tableware according to a preferred embodiment of the utility model, specifically, it includes an upper mold 101, a lower mold 102 and a demolding assembly 400, the upper mold 101 and the lower mold 102 are arranged opposite to each other, and the upper mold 101 and the lower mold 102 are connected to form an injection molding chamber 200, the upper mold 101 is provided with an injection molding flow channel 301, the injection molding flow channel 301 is branched to form a plurality of branch flow channels 302, each of the branch flow channels 302 is respectively connected to the injection molding chamber 200, and the demolding assembly 400 is used to separate the injection molded product from the injection molding chamber 200.

[0020] In the injection mold, the upper mold 101 and the lower mold 102 are arranged opposite to each other, and the upper mold 101 and the lower mold 102 are separated or combined by a driving mechanism. When the upper mold 101 and the lower mold 102 are combined and connected, an injection molding chamber 200 is formed, and glue is injected into the injection molding chamber 200 to form a plastic finished product. After cooling, it is separated from the mold through the demolding component 400 to obtain a plastic finished tableware product. In this embodiment, the main injection molding flow channel 301 is connected to the injection molding component outside the mold. The main injection molding flow channel 301 is divided into a plurality of branch flow channels 302 at the upper mold 101. The branch flow channels 302 are all connected to the injection molding chamber 200, which can realize multi-point injection molding, fast and efficient injection molding, and make the injection molding more uniform, avoiding the uneven thickness and cracking of the finished product caused by the uneven flow of the colloid during the injection molding process, ensuring a good glue discharge effect, and improving the quality of the injection molded parts.

[0021] In order to improve the injection molding quality, in one embodiment, at least part of the branch channel 302 is formed in the upper mold 101 and the lower mold 102. The upper mold 101 and the lower mold 102 are combined to form the branch channel 302. The glue is injected from the lower mold 102 to achieve multi-point injection. Double-sided injection is beneficial to improve the balance of glue flow, so that the injection molding effect is better and the quality of the finished product is better.

[0022] In order to improve the injection molding quality, in one embodiment, the branch channel 302 is symmetrically distributed along the center of the injection molding chamber 200. The symmetrically distributed branch channel 302 realizes balanced and symmetrical glue feeding on both sides, which is beneficial to improving the glue feeding balance, resulting in better injection molding effect and better finished product quality.

[0023] In order to improve the injection quality, in one embodiment, the diameter of the end of the branch channel 302 connected to the injection channel 301 is larger than the diameter of the end of the branch channel 302 connected to the injection chamber 200. In other words, the diameter of the end of the branch channel 302 away from the injection chamber 200 is larger than the diameter of the end close to the injection chamber 200. During the injection process, the colloid enters from the end of the injection chamber 200 away from the branch channel 302 and flows to the injection chamber 200. The reduction in diameter increases the flow rate of the colloid and increases the pressure, which is conducive to strengthening the injection pressure, ensuring the injection quality, and avoiding the backflow of the colloid.

[0024] In order to improve the efficiency of injection molding, in one embodiment, the number of the injection molding chambers 200 is multiple, and each of the injection molding chambers 200 is arranged in an array. It should be understood that the injection molding chambers 200 are arranged along the plane. Further, a branch channel 302 is connected to each of the injection molding chambers 200. By providing multiple injection molding chambers 200, multiple injection molding chambers 200 are injection molded at the same time, thereby improving production efficiency.

[0025] In one embodiment, a guide rod 501 is further included. The upper mold 101 is provided with a guide hole 502. The guide rod 501 is inserted into the guide hole 502, so as to realize the positioning, combination and separation of the upper and lower molds.

[0026] In one embodiment, Figure 1 As shown, the demoulding assembly 400 is a pneumatic demoulding mechanism, and the pneumatic module is moved by an external air source to release the injection molded part.

[0027] In one embodiment, the demoulding assembly includes a screw and a demoulding module, the demoulding module is connected to the screw, the screw is driven and connected to a demoulding cylinder, and the screw moves under the drive of the demoulding cylinder.

[0028] After injection molding, the plastic part needs to be cooled and demolded to obtain a finished plastic tableware product. In one embodiment, a cooling component is also included, and the cooling component is used to cool the injection molding chamber. Specifically, a cooling sleeve is also included, and the cooling sleeve is arranged on the outside of the lower mold. There is a surrounding cooling air duct in the cooling pipe, and the cooling pipe is connected to a blower, and the blower sends air to the cooling air duct to cool by air cooling.

[0029] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0030] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An injection mold for processing plastic tableware, characterized in that: The mold assembly comprises an upper mold, a lower mold, a guide rod and a demoulding assembly, wherein the upper mold is arranged opposite to the lower mold, and the upper mold and the lower mold are connected to form an injection molding chamber, the upper mold is provided with an injection molding flow channel, the injection molding flow channel is divided into a plurality of branch flow channels, each of the branch flow channels is respectively connected to the injection molding chamber, and the demoulding assembly is used to separate the injection molding product from the injection molding chamber; The upper mold is provided with a guide hole, and the guide rod is inserted into the guide hole; The demoulding assembly includes a screw rod and a demoulding module. The demoulding module is connected to the screw rod. The screw rod is driven and connected to a demoulding cylinder. The screw rod moves under the drive of the demoulding cylinder.

2. The injection mold for processing plastic tableware according to claim 1, characterized in that: At least part of the runner is formed in the upper mold and the lower mold.

3. The injection mold for processing plastic tableware according to claim 1, characterized in that: The branch channels are symmetrically distributed along the center of the injection molding cavity.

4. The injection mold for processing plastic tableware according to claim 1, characterized in that: There are multiple injection molding chambers, and the injection molding chambers are arranged in an array.

5. The injection mold for processing plastic tableware according to claim 4, characterized in that: A branch channel is respectively connected to each of the injection molding chambers.

6. The injection mold for processing plastic tableware according to claim 1, characterized in that: The diameter of one end of the branch channel connected to the injection channel is larger than the diameter of one end of the branch channel connected to the injection cavity.

7. The injection mold for processing plastic tableware according to claim 1, characterized in that: The demoulding component is a pneumatic demoulding mechanism.

8. The injection mold for processing plastic tableware according to claim 1, characterized in that: Also included is a cooling component, which is used to cool the injection molding cavity.

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