Injection mold with cooling oil circulation cooling

Abstract

The invention discloses an injection mold with cooling oil circulation cooling, comprising a fixed mold plate, a fixed mold seat, a movable mold seat, a movable mold plate and a cooling oil circulation machine; an ejector hole is provided in the middle position of the movable mold plate; an upper insert is provided inside the fixed mold seat, a lower insert is provided inside the movable mold seat, a molding cavity is provided between the lower insert and the upper insert, a sprue sleeve is provided in the middle position of the fixed mold plate, a main flow channel is provided in the middle position of the fixed mold seat, one end of the main flow channel is connected with the sprue sleeve, and the other end of the main flow channel is connected with the molding cavity; an ejector panel is provided between the movable mold seat and the movable mold plate, a plurality of ejectors are provided on the ejector panel, the front end of the ejector passes through the movable mold seat and the lower insert, and the front end of the ejector is installed in the molding cavity; a cooling cavity group is provided inside the lower insert and the upper insert, and the cooling cavity group is connected to the cooling oil circulation machine through an oil inlet pipeline group. The invention enables the plastic parts in the molding cavity to be cooled quickly, and greatly improves the cooling oil circulation cooling of the preparation efficiency of the plastic parts.

Description

Technical Field

[0001] The invention relates to an injection mould, in particular to an injection mould with cooling oil circulation cooling. Background Art

[0002] The injection molding process is a complex process involving mold design, mold manufacturing, raw material characteristics and raw material pretreatment methods, molding process, injection molding machine operation and other factors, and is closely related to processing environment conditions, product cooling time, and post-processing process. Therefore, the quality of the product is not only determined by the injection molding accuracy and metering accuracy of the injection molding machine, or simply by the quality of the mold design and the precision level of the mold processing. Usually, it is also affected and restricted by the other factors mentioned above. The plastic raw materials used in the injection molding process are diverse, and the types and forms of mold design are also varied. In addition, the operator's familiarity with a specific injection molding machine and the differences in operating skills and practical experience between workers are also different. At the same time, the objective environment will also vary with the seasons. These objective and subjective conditions jointly determine the generation of defects in injection molded products. The existing injection mold does not have an external cooling mechanism, which is not convenient for rapid cooling of the molded plastic parts, and the efficiency of preparing plastic parts is low. Summary of the invention

[0003] The present invention mainly solves the technical problems existing in the prior art, thereby providing an injection mold with cooling oil circulation cooling which can quickly cool a plastic part in a molding cavity and greatly improve the preparation efficiency of the plastic part.

[0004] The above technical problems of the present invention are mainly solved by the following technical solutions:

[0005] An injection mold for cooling oil circulation cooling comprises a fixed mold plate, a fixed mold base, a movable mold base, a movable mold plate and a cooling oil circulation machine; the fixed mold base is installed on the fixed mold plate, a cushion block is provided between the movable mold plate and both sides of the movable mold base, and the fixed mold base and the movable mold base overlap; a guide sleeve is provided between the four corners of the fixed mold plate and the fixed mold base, a guide column is provided between the four corners of the movable mold base, and the front end of the guide column is installed in the guide sleeve; a push rod hole is provided in the middle of the movable mold plate; an upper insert is provided inside the fixed mold base, a lower insert is provided inside the movable mold base, and the lower insert A molding cavity is provided between the block and the upper insert, a gate sleeve is provided in the middle position of the fixed mold plate, a main channel is provided in the middle position of the fixed mold seat, one end of the main channel is communicated with the gate sleeve, and the other end of the main channel is communicated with the molding cavity; an ejector panel is provided between the movable mold seat and the movable mold plate, and a plurality of ejectors are provided on the ejector panel, the front ends of the ejectors pass through the movable mold seat and the lower insert, and the front ends of the ejectors are installed in the molding cavity; a cooling cavity group is provided inside the lower insert and the upper insert, and the cooling cavity group is connected to the cooling oil circulation machine through an oil inlet pipeline group.

[0006] Furthermore, the cooling chamber group includes a first cooling chamber and a second cooling chamber, and the first cooling chamber and the second cooling chamber are arranged in the lower insert; the first cooling chamber and the second cooling chamber are connected through a pair of first flow channels, and the oil inlet pipe group includes a first oil inlet pipe and a first oil outlet pipe, and the bottom of the second cooling chamber is connected to the cooling oil circulation machine through the first oil inlet pipe; the top of the second cooling chamber is connected to the cooling oil circulation machine through the first oil outlet pipe; a first meter is provided on the first oil outlet pipe, and a first metering pump is provided on the first meter.

[0007] Furthermore, the cooling chamber group also includes a third cooling chamber and a fourth cooling chamber, and the third cooling chamber and the fourth cooling chamber are arranged in the upper insert; the third cooling chamber and the fourth cooling chamber are connected through a pair of second pairs of flow channels, and the oil inlet pipe group also includes a second oil inlet pipe and a second oil outlet pipe, and the bottom of the fourth cooling chamber is connected to the cooling oil circulation machine through the second oil inlet pipe; the top of the fourth cooling chamber is connected to the cooling oil circulation machine through the second oil outlet pipe; a second meter is provided on the second oil inlet pipe, and a second metering pump is provided on the second meter.

[0008] Furthermore, a fixing pin is provided between the movable mold base, the movable mold plate and the cushion block, a fixing cap is provided at one end of the fixing pin, and a fixing ring is provided at the other end of the fixing pin.

[0009] Furthermore, an ejector bottom plate is provided on the bottom surface of the ejector panel, a fixing block is provided at the root of the ejector, and the fixing block is mounted on the ejector bottom plate; a positioning groove is provided at the middle position of the bottom of the ejector bottom plate, and a protective sleeve is provided on the inner circumference of the ejector rod hole; the positioning groove corresponds to the protective sleeve; a buffer assembly is provided between the ejector bottom plate and the movable template, and the buffer assembly is fixed to the movable template through a fixing rod; the buffer assembly includes a protective block and a rubber protective shell, the protective block is mounted on the bottom surface of the ejector bottom plate, a main protective rubber block is provided on the protective block, a secondary protective rubber block is provided on the top surface of the rubber protective shell, the secondary protective rubber block corresponds to the main protective rubber block, and a plurality of buffer springs arranged in parallel are provided inside the rubber protective shell; a guide shaft is provided between the movable mold base and the four corners of the movable template, a guide groove is provided between the ejector panel and the four corners of the ejector bottom plate, and the guide shaft passes through the guide groove.

[0010] An injection mold with cooling oil circulation cooling using the above technical solution is installed on an injection molding machine. The injection molding machine injects the plastic melt into the molding cavity through the gate sleeve and the main channel. After the plastic part in the molding cavity is cooled, the ejector rod of the injection molding machine passes through the ejector rod hole and pushes up the ejector base plate and the ejector panel. The ejector base plate and the ejector panel eject the plastic part formed in the molding cavity through the ejector; the guide sleeve and the guide column facilitate the resetting and demolding of the injection mold; the cooling oil circulation machine provides circulating cooling oil to the cooling cavity group through the oil inlet pipeline group, and the injection mold is fully cooled by the circulating cooling oil, so that the plastic part in the molding cavity is quickly cooled, which greatly improves the preparation efficiency of the plastic parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a schematic structural diagram of the injection mold with cooling oil circulation cooling of the present invention.

[0013] Figure 2 It is a schematic diagram of the structure of the cooling cavity of the present invention.

[0014] Figure 3 It is a schematic structural diagram of the upper spacer block described in the present invention.

[0015] Figure 4 It is a schematic structural diagram of the buffer assembly of the present invention. DETAILED DESCRIPTION

[0016] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0017] like Figures 1 to 4 As shown, an injection mold with cooling oil circulation cooling comprises a fixed mold plate 1, a fixed mold base 2, a movable mold base 3, a movable mold plate 4 and a cooling oil circulation machine 19; the fixed mold base 2 is installed on the fixed mold plate 1, and a cushion block 5 is provided between the movable mold plate 4 and the two sides of the movable mold base 3, and the fixed mold base 2 and the movable mold base 3 overlap; a guide sleeve 6 is provided between the four corners of the fixed mold plate 1 and the fixed mold base 2, and a guide column 7 is provided between the four corners of the movable mold base 3, and the front end of the guide column 7 is installed in the guide sleeve 6; a top rod hole 8 is provided in the middle position of the movable mold plate 4; an upper insert 9 is provided inside the fixed mold base 2, and a lower insert 10 is provided inside the movable mold base 3, and the lower insert 10 and the upper insert A molding cavity 13 is provided between the blocks 9, a gate sleeve 11 is provided in the middle position of the fixed mold plate 1, a main channel 12 is provided in the middle position of the fixed mold base 2, one end of the main channel 12 is connected with the gate sleeve 11, and the other end of the main channel 12 is connected with the molding cavity 13; an ejector panel 14 is provided between the movable mold base 3 and the movable mold plate 4, and a plurality of ejectors 15 are provided on the ejector panel 14, the front end of the ejector 15 passes through the movable mold base 3 and the lower insert 10, and the front end end of the ejector 15 is installed in the molding cavity 13; a cooling cavity group is provided inside the lower insert 10 and the upper insert 9, and the cooling cavity group is connected to the cooling oil circulation machine 19 through an oil inlet pipeline group.

[0018] The injection mold with cooling oil circulation cooling of the present invention is installed on an injection molding machine. The injection molding machine injects plastic melt into a molding cavity 13 through a sprue sleeve 11 and a main channel 12. After the plastic part in the molding cavity 13 is cooled, an ejector rod of the injection molding machine passes through an ejector rod hole 8 and pushes up an ejector base plate 36 and an ejector panel 14. The ejector base plate 36 and the ejector panel 14 eject the plastic part molded in the molding cavity 13 through an ejector 15. The guide sleeve 6 and the guide column 7 facilitate the resetting and demolding of the injection mold. The cooling oil circulation machine 19 provides circulating cooling oil to the cooling cavity group through an oil inlet pipeline group. The injection mold is fully cooled by the circulating cooling oil, so that the plastic part in the molding cavity 13 is quickly cooled, thereby greatly improving the preparation efficiency of the plastic parts.

[0019] Preferably, the cooling chamber group includes a first cooling chamber 16 and a second cooling chamber 17, and the first cooling chamber 16 and the second cooling chamber 17 are arranged in the lower insert 10; the first cooling chamber 16 and the second cooling chamber 17 are connected by a pair of first pairs of flow channels 18, and the oil inlet pipeline group includes a first oil inlet pipeline 20 and a first oil outlet pipeline 21, and the bottom of the second cooling chamber 17 is connected to the cooling oil circulation machine 19 through the first oil inlet pipeline 20; the top of the second cooling chamber 17 is connected to the cooling oil circulation machine 19 through the first oil outlet pipeline 21; a first metering device 27 is provided on the first oil outlet pipeline 21, and a first metering pump 28 is provided on the first metering device 27; the cooling chamber group also includes a third cooling chamber 22 and a fourth cooling chamber 23, and the third cooling chamber 22 and the fourth cooling chamber 23 are arranged in the upper insert 9; the third cooling chamber 22 and the fourth cooling chamber 23 are connected by a pair of second pairs of flow channels 24, and the oil inlet pipeline group It also includes a second oil inlet pipeline 25 and a second oil outlet pipeline 26. The bottom of the fourth cooling chamber 23 is connected to the cooling oil circulation machine 19 through the second oil inlet pipeline 25; the top of the fourth cooling chamber 23 is connected to the cooling oil circulation machine 19 through the second oil outlet pipeline 26; a second metering device 29 is provided on the second oil inlet pipeline 25, and a second metering pump 30 is provided on the second metering device 29; the cooling oil circulation machine 19 provides cooling oil to the first cooling chamber 16 and the second cooling chamber 17 through the first oil inlet pipeline 20 and the first oil outlet pipeline 21, and the cooling oil circulation machine 19 provides cooling oil to the third cooling chamber 22 and the fourth cooling chamber 23 through the second oil inlet pipeline 25 and the second oil outlet pipeline 26, the first oil outlet pipeline 21 is controlled by the first metering device 27 and the first metering pump 28 to meter and transport the cooling oil, and the second oil inlet pipeline 25 is controlled by the second metering device 29 and the second metering pump 30 to meter and transport the cooling oil.

[0020] Preferably, a fixing pin 33 is provided between the movable mold base 3, the movable mold plate 4 and the cushion block 5, a fixing cap 34 is provided at one end of the fixing pin 33, and a fixing ring 35 is provided at the other end of the fixing pin 33; the movable mold base 3, the movable mold plate 4 and the cushion block 5 are firmly installed through the fixing pin 33.

[0021] Preferably, an ejector base plate 36 is provided on the bottom surface of the ejector panel 14, and a fixing block 39 is provided at the root of the ejector 15, and the fixing block 39 is installed on the ejector base plate 36; a positioning groove 32 is provided at the middle position of the bottom of the ejector base plate 36, and a protective sleeve 31 is provided on the inner circumference of the ejector rod hole 8; the positioning groove 32 corresponds to the protective sleeve 31; the root of the ejector 15 is firmly installed through the ejector base plate 36, and the ejector rod of the injection molding machine passes through the ejector rod hole 8 and is pushed into the positioning groove 32, so as to facilitate the ejection of the ejector base plate 36.

[0022] Preferably, a buffer assembly 37 is provided between the ejector base plate 36 and the movable plate 4, and the buffer assembly 37 is fixed to the movable plate 4 through a fixing rod 38; the buffer assembly 37 includes a protective block 53 and a rubber protective shell 55, the protective block 53 is installed on the bottom surface of the ejector base plate 36, a main protective rubber block 54 is provided on the protective block 53, and a secondary protective rubber block 56 is provided on the top surface of the rubber protective shell 55, the secondary protective rubber block 56 corresponds to the main protective rubber block 54, and a plurality of buffer springs 57 arranged in parallel are provided inside the rubber protective shell 55; the buffer assembly 37 can prevent the ejector base plate 36 from being directly installed on the movable plate 4, thereby improving the service life of the ejector base plate 36; specifically, the rubber protective shell 55 improves the buffering effect of the secondary protective rubber block 56 through the buffer assembly 37, and the secondary protective rubber block 56 and the main protective rubber block 54 improve the buffering effect, preventing the ejector base plate 36 from being directly installed on the movable plate 4, thereby improving the service life of the ejector base plate 36.

[0023] Preferably, a guide shaft 40 is provided between the four corners of the movable mold base 3 and the movable mold plate 4, a guide groove 41 is provided between the four corners of the ejector panel 14 and the ejector bottom plate 36, and the guide shaft 40 passes through the guide groove 41; the movable mold base 3 and the movable mold plate 4 can achieve stable movement and adjustment along the guide shaft 40 through the guide groove 41, and the accuracy is higher.

[0024] Preferably, the first cooling chamber 16, the second cooling chamber 17, the third cooling chamber 22 and the fourth cooling chamber 23 have the same shape and structure. The first cooling chamber 16 includes a cooling chamber 42, the interior of the cooling chamber 42 is a circulation chamber 43, one end of the cooling chamber 42 is provided with an oil inlet filter ball 44, the other end of the cooling chamber 42 is provided with an oil outlet filter ball 45, the inner top of the cooling chamber 42 is provided with a plurality of upper spacers 46 arranged in parallel, the inner bottom of the cooling chamber 42 is provided with a plurality of lower spacers 48 arranged in parallel, and the lower spacers 48 are arranged Installed between two adjacent upper spacers 46, the upper spacer 46 is installed between two adjacent lower spacers 48; the first connection port 47 is between the lower end of the upper spacer 46 and the inner bottom of the cooling cavity 42, and the second connection port 49 is between the upper end of the lower spacer 48 and the inner top surface of the cooling cavity 42; the oil inlet filter ball 44 pre-filters the input cooling oil, and the upper spacer 46, the first connection port 47, the lower spacer 48 and the second connection port 49 increase the flow area of ​​the cooling oil in the circulation cavity 43, greatly increasing the cooling efficiency. The injection mold is fully cooled by circulating cooling oil, so that the plastic parts in the molding cavity 13 are quickly cooled, greatly improving the preparation efficiency of the plastic parts.

[0025] Preferably, the upper spacer 46 and the lower spacer 48 have the same shape and structure. The upper spacer 46 includes a filter body 50. The surface of the filter body 50 is a mesh structure. The filter body 50 is provided with a plurality of first backflow plates 51 and second backflow plates 52 arranged in parallel. The first backflow plates 51 and the second backflow plates 52 are inclined and are mesh structures. The first backflow plates 51 and the second backflow plates 52 increase the surface area of ​​the filter body 50. The mesh structure of the filter body 50 and the first backflow plates 51 and the second backflow plates 52 increase the flow area of ​​the cooling oil, which greatly increases the cooling efficiency. The injection mold is fully cooled by circulating cooling oil, so that the plastic parts in the molding cavity 13 are quickly cooled, which greatly improves the preparation efficiency of the plastic parts.

[0026] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims

1. An injection mold for cooling oil circulation cooling, comprising a fixed mold plate, a fixed mold seat, a movable mold seat, a movable mold plate and a cooling oil circulation machine; the fixed mold seat is installed on the fixed mold plate, a cushion block is provided between the movable mold plate and the two sides of the movable mold seat, and the fixed mold seat overlaps with the movable mold seat; a guide sleeve is provided between the four corners of the fixed mold plate and the fixed mold seat, a guide column is provided between the four corners of the movable mold seat, and the front end of the guide column is installed in the guide sleeve; an ejector hole is provided in the middle position of the movable mold plate; an upper insert is provided inside the fixed mold seat, a lower insert is provided inside the movable mold seat, a molding cavity is provided between the lower insert and the upper insert, a sprue sleeve is provided in the middle position of the fixed mold plate, a main channel is provided in the middle position of the fixed mold seat, one end of the main channel is connected with the sprue sleeve, and the other end of the main channel is connected with the molding cavity; an ejector panel is provided between the movable mold seat and the movable mold plate, and a plurality of ejectors are provided on the ejector panel, the front end of the ejector passes through the movable mold seat and the lower insert, and the front end of the ejector is installed in the molding cavity; Features: A cooling cavity group is provided inside the lower insert and the upper insert, and the cooling cavity group is connected to a cooling oil circulation machine through an oil inlet pipeline group; The cooling chamber group includes a first cooling chamber and a second cooling chamber, the first cooling chamber and the second cooling chamber are arranged in the lower insert; the first cooling chamber and the second cooling chamber are connected through a pair of first flow channels, the oil inlet pipeline group includes a first oil inlet pipeline and a first oil outlet pipeline, the bottom of the second cooling chamber is connected to the cooling oil circulation machine through the first oil inlet pipeline; the top of the second cooling chamber is connected to the cooling oil circulation machine through the first oil outlet pipeline; Wherein, the first cooling cavity comprises a cooling cavity, the interior of the cooling cavity is a circulation cavity, one end of the cooling cavity is provided with an oil inlet filter ball, the other end of the cooling cavity is provided with an oil outlet filter ball, the inner top of the cooling cavity is provided with a plurality of upper spacers arranged in parallel, the inner bottom of the cooling cavity is provided with a plurality of lower spacers arranged in parallel, the lower spacers are installed between two adjacent upper spacers, and the upper spacers are installed between two adjacent lower spacers; a first connection port is formed between the lower end of the upper spacer and the inner bottom of the cooling cavity, and a second connection port is formed between the upper end of the lower spacer and the inner top surface of the cooling cavity; The upper spacer block has the same shape and structure as the lower spacer block. The upper spacer block includes a filter body. The surface of the filter body is a mesh structure. The interior of the filter body is provided with a plurality of first backflow plates and second backflow plates arranged in parallel. The first backflow plates and the second backflow plates are inclined and are a mesh structure.

2. The injection mold with cooling oil circulation cooling according to claim 1, characterized in that: A first metering device is provided on the first oil outlet pipeline, and a first metering pump is provided on the first metering device.

3. The injection mold with cooling oil circulation cooling according to claim 1, characterized in that: The cooling chamber group also includes a third cooling chamber and a fourth cooling chamber, and the third cooling chamber and the fourth cooling chamber are arranged in the upper insert; the third cooling chamber and the fourth cooling chamber are connected through a pair of second pairs of flow channels, and the oil inlet pipeline group also includes a second oil inlet pipeline and a second oil outlet pipeline, and the bottom of the fourth cooling chamber is connected to the cooling oil circulation machine through the second oil inlet pipeline; the top of the fourth cooling chamber is connected to the cooling oil circulation machine through the second oil outlet pipeline.

4. The injection mold with cooling oil circulation cooling according to claim 3, characterized in that: A second metering device is provided on the second oil inlet pipeline, and a second metering pump is provided on the second metering device.

5. The injection mold with cooling oil circulation cooling according to claim 1, characterized in that: A fixing pin is arranged between the movable die seat, the movable die plate and the cushion block, a fixing cap is arranged at one end of the fixing pin, and a fixing ring is arranged at the other end of the fixing pin.

6. The injection mold with cooling oil circulation cooling according to claim 1, characterized in that: The bottom surface of the ejector panel is provided with an ejector bottom plate, the root of the ejector is provided with a fixing block, and the fixing block is installed on the ejector bottom plate.

7. The injection mold with cooling oil circulation cooling according to claim 6, characterized in that: A positioning groove is arranged at the middle position of the bottom of the ejector bottom plate, and a protective sleeve is arranged on the inner peripheral surface of the ejector rod hole; the positioning groove corresponds to the protective sleeve.

8. The injection mold with cooling oil circulation cooling according to claim 6, characterized in that: A buffer assembly is provided between the ejector base plate and the movable platen, and the buffer assembly is fixed to the movable platen through a fixing rod; the buffer assembly comprises a protective block and a rubber protective shell, the protective block is mounted on the bottom surface of the ejector base plate, a main protective rubber block is provided on the protective block, a secondary protective rubber block is provided on the top surface of the rubber protective shell, the secondary protective rubber block corresponds to the main protective rubber block, and a plurality of buffer springs arranged in parallel are provided inside the rubber protective shell.

9. The injection mold with cooling oil circulation cooling according to claim 6, characterized in that: A guide shaft is arranged between the four corners of the movable mold base and the movable mold plate, a guide groove is arranged between the four corners of the ejector panel and the ejector bottom plate, and the guide shaft passes through the guide groove.

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