Oil collecting block and injection molding machine

Abstract

The invention belongs to the technical field of hot runner injection molding, and discloses an oil collecting block and an injection molding machine. The oil collecting block comprises a block body and valves, the block body is provided with more than two oil feeding passages, an oil inlet and an oil outlet are respectively formed at two ends of each oil feeding passage, an oil passing passage is communicated between two adjacent oil feeding passages, all the oil passing passages are correspondingly provided with the valves, the valves are mounted on the block body, and the valves have a first working state for cutting off the oil passing passages; and in the second working state, the oil passage is conducted. When the number of the oil pipes capable of being connected with the oil supply equipment can be matched with all the oil inlet pipes, all the valves are in the first working state, so that oil is supplied to all parts needing oil supply of the hot runner system, and when the number of the oil pipes capable of being connected with the oil supply equipment cannot be matched with all the oil inlet pipes, all the valves are in the second working state. If yes, all or part of the valves are selected to be switched to the second working state, so that it is guaranteed that one oil supply device can convey hydraulic oil to all the oil conveying channels, and then the production cost can be reduced.

Description

Technical Field

[0001] This invention relates to the field of hot runner injection molding technology, and more particularly to an oil collecting block and an injection molding machine. Background Technology

[0002] In the current technology, injection molding machines are widely used in many fields such as automotive parts, electronics, and medical devices due to their efficient and precise molding capabilities. During the operation of an injection molding machine, the hot runner system of the mold is a key component that ensures the uniform flow of molten plastic and precise molding. Precise control of the amount of plastic discharged from the hot nozzles in the hot runner system directly determines the molding quality and production efficiency of the product.

[0003] To achieve precise control of the nozzle's discharge volume, the injection molding machine needs to supply hydraulic oil to the mold's hot runner system via an oil supply device. The pressure changes in the hydraulic oil then drive actuators such as needle valves within the hot runner, thereby adjusting the opening and closing degree of the nozzle to control the discharge volume. Based on this, existing technology uses an oil collector as a key component in the hydraulic circuit system for integrating and distributing hydraulic oil.

[0004] Specifically, in existing technologies, oil collection blocks typically have multiple sets of oil delivery channels, each responsible for supplying oil to different components of the hot runner system. Furthermore, each oil delivery channel employs a "one inlet, one outlet" design, meaning each channel has one inlet and one outlet. The inlet is connected to the oil supply equipment via an inlet pipe, and the outlet is connected to the hot runner system via an outlet pipe. This allows for integrated management of the oil pipelines, simplifying pipeline layout and improving system stability.

[0005] However, different oil supply devices can connect to varying numbers of oil pipes. For example, some small oil supply devices can only connect to 1-2 oil pipes, while large devices can connect to 5-8 oil pipes. For oil supply devices that can connect to a large number of oil pipes, the oil collection block can select the corresponding number of oil delivery paths to operate based on the actual structure of the mold's hot runner system, while the other oil delivery paths on the oil collection block remain closed. However, when the oil supply structure is changed to an oil supply device that only connects to a small number of oil inlet pipes during production, a single oil supply device cannot simultaneously supply oil to the corresponding number of oil delivery paths on the oil collection block. Therefore, it is necessary to adaptively arrange several oil supply devices, but arranging several oil supply devices will significantly increase production costs.

[0006] Therefore, the above problems urgently need to be solved. Summary of the Invention

[0007] The purpose of this invention is to provide an oil collecting block and an injection molding machine to reduce production costs.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] In one aspect, the present invention provides an oil collecting block, comprising:

[0010] The block is provided with two or more oil delivery passages, with an oil inlet and an oil outlet at each end of the oil delivery passages, and an oil passage connecting adjacent oil delivery passages.

[0011] Valves are provided in all the oil passages. The valves are installed on the block and have a first working state of blocking the oil passage and a second working state of opening the oil passage.

[0012] Preferably, the valve is rotatable about its axis to switch between the first operating state and the second operating state.

[0013] Preferably, the valve divides the oil passage into a first flow section and a second flow section, the valve is provided with a through hole, the valve is rotatable about its axis, and the through hole has a first working position connecting the first flow section and the second flow section, and a second working position offset from the oil passage.

[0014] Preferably, the block is provided with a mounting groove, the groove opening of which is formed on the outer surface of the block. The valve is inserted into the mounting groove and passes through the oil passage, and the operating end of the valve is exposed through the groove opening.

[0015] Preferably, the mounting groove includes a first groove and a second groove, the first groove and the second groove being located on opposite sides of the oil passage; wherein:

[0016] The first groove extends to the outer surface of the block on the side away from the second groove, and forms the groove on the outer surface of the block. The end of the valve away from the operating end presses against the groove wall of the second groove on the side away from the first groove.

[0017] Preferably, a sealing ring is provided around the outer periphery of the valve, and the sealing ring is pressed and confined between the groove wall of the first groove and the valve.

[0018] Preferably, the operating end is provided with a connector, through which the valve connects to the wrench.

[0019] Preferably, the outer surface of the block is provided with a first mark and a second mark, and the valve is provided with an indicator mark. In the first working state, the indicator mark is opposite to the first mark, and in the second working state, the indicator mark is opposite to the second mark.

[0020] Preferably, two or more oil delivery passages are arranged in a row, and a connecting channel is provided on the block. The connecting channel extends along the arrangement direction of the two or more oil delivery passages and connects all the oil delivery passages. One end of the connecting channel extends to the outer surface of the block and forms an opening. A plug is provided on the block, and the plug blocks the connecting channel at the opening.

[0021] In another aspect, the present invention provides an injection molding machine, including the oil collection block as described above.

[0022] The beneficial effects of this invention are:

[0023] In this invention, when the number of oil pipes that the oil supply device can connect to is sufficient to connect all inlet pipes, all valves are in the first working state, ensuring that all oil delivery passages are in a one-in-one-out working state, thereby supplying oil to all components of the hot runner system that require oil. However, when the number of oil pipes that the oil supply device can connect to is insufficient to connect all inlet pipes, all or some valves are selectively switched to the second working state based on the number of inlet pipes that the oil supply device can connect to, thus ensuring that one oil supply device can deliver hydraulic oil to all oil delivery passages. Therefore, when the oil supply structure is replaced during production with an oil supply device that only connects to a small number of inlet pipes, this invention only requires selectively switching all or some valves to the second working state, eliminating the need for multiple oil supply devices and thus reducing production costs. Attached Figure Description

[0024] Figure 1 This is a cross-sectional view of the oil collection block along the longitudinal section of the valve when all valves are in the first working state in this embodiment of the invention;

[0025] Figure 2 This is a cross-sectional view of the oil collection block along the longitudinal section of the valve when all valves are in the second working state in this embodiment of the invention;

[0026] Figure 3 This is a bottom view of the oil collecting block in an embodiment of the present invention;

[0027] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0028] In the picture:

[0029] 1. Block; 11. Oil delivery passage; 111. Oil inlet; 112. Oil outlet; 12. Oil flow passage; 121. First flow section; 122. Second flow section; 13. Mounting groove; 131. Groove opening; 132. First groove section; 133. Second groove section; 141. First marker; 142. Second marker; 15. Connecting channel; 16. Plug;

[0030] 2. Valve; 21. Perforation; 22. Operating end; 221. Insertion port; 23. Sealing ring; 24. Indicator mark. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0032] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0035] This embodiment provides an injection molding machine, which includes a mold, an oil collection block, and an oil supply device. The mold is equipped with a hot runner system. The oil collection block is connected to the oil supply device through an oil inlet pipe and to the mold through an oil outlet pipe, thereby supplying hydraulic oil to the components in the hot runner system that require oil supply.

[0036] It is understood that since the specific structures of the mold, oil supply equipment, oil inlet pipe, and oil outlet pipe are all existing technologies, this embodiment will not elaborate on them.

[0037] Please see Figures 1 to 4 In this embodiment, the oil collecting block includes a block 1, which has two or more oil delivery passages 11. It is understood that the number of oil delivery passages 11 in the block 1 is determined by the number of components in the hot runner system that require oil supply; the number of oil delivery passages 11 in the block 1 is greater than or equal to the number of components in the hot runner system that require oil supply. For example, in this embodiment, the number of oil delivery passages 11 in the block 1 is equal to the number of components in the hot runner system that require oil supply. Specifically, the oil collecting block has four oil delivery passages 11, thereby enabling oil supply to four components in the hot runner system.

[0038] It is understandable that if the number of oil supply passages 11 in block 1 is greater than the number of components that need to be supplied with oil in the hot runner system, then for the oil outlet pipe that is not connected to the mold, the end of the oil outlet pipe that is far from the oil collection block will be blocked.

[0039] As described above, an oil inlet 111 and an oil outlet 112 are formed at both ends of the oil delivery passage 11. Similar to the prior art, the oil inlet 111 of all oil delivery passages 11 is connected to an oil inlet pipe, and the oil outlet 112 of all oil delivery passages 11 is connected to an oil outlet pipe.

[0040] Furthermore, in this embodiment, an oil passage 12 is connected between two adjacent oil delivery passages 11. In addition, besides the block 1, the oil collection block also includes a valve 2. All oil passages 12 are correspondingly provided with valves 2. The valves 2 are installed on the block 1. The valves 2 have a first working state of isolating the oil passage 12 and a second working state of guiding the oil passage 12.

[0041] When the number of oil pipes that the oil supply equipment can connect to is sufficient to connect all the inlet pipes, all valves 2 are in the first working state, so that all oil delivery passages 11 are in a one-in-one-out working state, thereby realizing the supply of oil to all components of the hot runner system that require oil supply. When the number of oil pipes that the oil supply equipment can connect to is insufficient to connect all the inlet pipes, all or some of the valves 2 are switched to the second working state according to the number of inlet pipes that the oil supply equipment can connect to, so as to ensure that one oil supply equipment can deliver hydraulic oil to all oil delivery passages 11. Therefore, when the oil supply structure is replaced with an oil supply equipment that only connects to a small number of inlet pipes during the production process, this embodiment only needs to selectively switch all or some of the valves 2 to the second working state, without the need to arrange several oil supply equipment, thereby reducing production costs.

[0042] Specifically, if the number of inlet pipes that the oil supply equipment can connect to is less than the number of components that the hot runner system needs to supply oil to, then the inlet pipes not connected to the oil supply equipment are blocked. In this embodiment, for the oil delivery passage 11 connected to the inlet pipe, all or part of the valves 2 can be opened to connect the oil delivery passage 11 and the oil delivery passage 11 on the oil collection block that is directly connected to the oil supply equipment. This enables the oil supply equipment to deliver hydraulic oil to all oil delivery passages 11.

[0043] Specifically, in this embodiment, taking the oil collection block with four oil delivery passages 11 as an example, if the oil supply device can only connect to one inlet pipe, all valves 2 are switched to the second working state, thereby connecting all oil delivery passages 11. At this time, the oil collection block is in a one-in-four-out working state, so hydraulic oil can be delivered to all oil delivery passages 11 through one inlet 111, thereby achieving oil supply to all components of the hot runner system that require oil. Specifically, if the oil supply device can only connect to one inlet pipe, one of the inlet pipes connected to the oil collection block is connected to the oil supply device, while the ends of the other inlet pipes away from the oil collection block are blocked. At the same time, all valves 2 are switched to the second working state, so the oil supply device can deliver hydraulic oil to all oil delivery passages 11 through one inlet pipe, thereby achieving oil supply to all components of the hot runner system that require oil.

[0044] Accordingly, if the oil supply equipment can only connect to two inlet pipes, the two oil delivery passages 11 on the oil collection block can be directly connected to the oil supply equipment through the inlet pipes. For other oil delivery passages 11, this embodiment can adaptively switch two valves 2 to the second working state, thereby connecting the oil delivery passages 11 that are not directly connected to the oil supply equipment through the inlet pipes with the oil delivery passages 11 on the oil collection block that are directly connected to the oil supply equipment through the inlet pipes. Thus, the oil supply equipment can deliver hydraulic oil to all oil delivery passages 11 through the two inlet pipes, thereby enabling the supply of oil to all components of the hot runner system that require oil.

[0045] It is understandable that the principle is the same when the oil supply equipment can be connected to three oil inlet pipes, so this embodiment will not elaborate on this.

[0046] Furthermore, it is worth noting that when two or more oil delivery passages 11 are arranged in a row, a connecting channel 15 is provided on the block 1. The connecting channel 15 extends along the arrangement direction of the two or more oil delivery passages 11 and connects all the oil delivery passages 11. Specifically, in this embodiment, four oil delivery passages 11 are arranged in a row, and a connecting channel 15 is provided on the block 1. The connecting channel 15 extends along the arrangement direction of the four oil delivery passages 11 and connects all the oil delivery passages 11.

[0047] Furthermore, one end of the connecting channel 15 extends to the outer surface of the block 1 and forms an opening. Thus, in this embodiment, by arranging all the oil delivery passages 11 in a row, it is convenient to process the oil passage 12 on the oil collecting block. Specifically, a connecting channel 15 extending along the arrangement direction of the four oil delivery passages 11 can be opened on the surface of the oil collecting block into the interior of the oil collecting block. Thus, an oil passage 12 is formed between two adjacent oil delivery passages 11. A plug 16 is provided on the block 1, and the plug 16 seals the connecting channel 15 at the opening, thereby preventing hydraulic oil leakage.

[0048] Furthermore, since all oil passages 12 extend in the same direction, it is convenient to deliver hydraulic oil to other oil passages 11 through one oil passage 11 when all valves 2 are switched to the second working state.

[0049] Furthermore, in this embodiment, valve 2 is rotatable about its axis to switch between a first operating state and a second operating state, thereby simplifying operation and facilitating the switching of the operating state of valve 2.

[0050] Based on the above, valve 2 divides the oil passage 12 into a first flow section 121 and a second flow section 122. Valve 2 is provided with a through hole 21, and valve 2 can rotate around its axis. The through hole 21 has a first working position that connects the first flow section 121 and the second flow section 122, and a second working position that is offset from the oil passage 12. When the through hole 21 is in the first working position, valve 2 is in the second working state, and when the through hole 21 is in the second working position, valve 2 is in the first working state.

[0051] Specifically, in this embodiment, the perforation 21 can be switched between the first working position and the second working position by rotating the valve 2 90° clockwise or 90° counterclockwise.

[0052] As shown above, in this embodiment, the valve 2 can be switched between the first working state and the second working state by rotating the valve 2, thereby improving work efficiency.

[0053] Furthermore, in this embodiment, the block 1 is provided with a mounting groove 13, the groove opening 131 of the mounting groove 13 is formed on the outer surface of the block 1, the valve 2 is inserted into the mounting groove 13 and passes through the oil passage 12, and the operating end 22 of the valve 2 is exposed from the groove opening 131, so that the operator can operate the operating end 22 of the valve 2 to switch the working state of the valve 2. Thus, this embodiment can facilitate the operator to operate the valve 2 to switch the working state, thereby improving work efficiency.

[0054] As described above, the operating end 22 is provided with a plug interface 221. The valve 2 is connected to the wrench through the plug interface 221. That is, in this embodiment, the operator can rotate the valve 2 with the wrench to switch the working state of the valve 2, thereby further improving work efficiency and facilitating operation.

[0055] Furthermore, the outer surface of block 1 is provided with a first mark 141 and a second mark 142, and valve 2 is provided with an indicator mark 24. In the first working state, indicator mark 24 is directly opposite the first mark 141, and in the second working state, indicator mark 24 is directly opposite the second mark 142. Thus, by observing the relative position of indicator mark 24 with the first mark 141 or the second mark 142, the operator can quickly determine whether valve 2 has accurately switched to the required working state, thereby further facilitating operation.

[0056] Moreover, the aforementioned markings can help reduce misoperation, thereby improving the operational stability and reliability of the injection molding machine.

[0057] Furthermore, it is worth noting that, based on the above description, the mounting groove 13 includes a first groove 132 and a second groove 133, which are located on opposite sides of the oil passage 12. The side of the first groove 132 away from the second groove 133 extends to the outer surface of the block 1, forming a groove 131 on the outer surface of the block 1. The end of the valve 2 away from the operating end 22 presses against the side wall of the second groove 133 away from the first groove 132, thereby sealing the valve 2 and the block 1. This prevents hydraulic oil in any one oil passage 11 from leaking into other oil passages 11 when the valve 2 is in its first working state, ensuring that the oil supply equipment can accurately supply oil to the components requiring oil in the hot runner system, thus ensuring the stable operation of the injection molding machine.

[0058] In addition, a sealing ring 23 is provided around the outer periphery of the valve 2. The sealing ring 23 presses against and is limited between the groove wall of the first groove 132 and the valve 2, thereby preventing hydraulic oil from leaking outward and further ensuring the stable operation of the injection molding machine.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An oil collecting block, characterized in that, include: The block (1) is provided with two or more oil delivery passages (11), and the two ends of the oil delivery passages (11) respectively form an oil inlet (111) and an oil outlet (112), and the two adjacent oil delivery passages (11) are connected by an oil passage (12). Valves (2) are provided in all the oil passages (12). The valves (2) are installed on the block (1). The valves (2) have a first working state of blocking the oil passages (12) and a second working state of opening the oil passages (12).

2. The oil collecting block according to claim 1, characterized in that, The valve (2) is rotatable about its axis to switch between the first operating state and the second operating state.

3. The oil collecting block according to claim 2, characterized in that, The valve (2) divides the oil passage (12) into a first flow section (121) and a second flow section (122). The valve (2) is provided with a through hole (21). The valve (2) can rotate around its axis and the through hole (21) has a first working position connecting the first flow section (121) and the second flow section (122) and a second working position offset from the oil passage (12).

4. The oil collecting block according to claim 3, characterized in that, The block (1) is provided with a mounting groove (13), the groove opening (131) of the mounting groove (13) is formed on the outer surface of the block (1), the valve (2) is inserted into the mounting groove (13) and passes through the oil passage (12), and the operating end (22) of the valve (2) is exposed from the groove opening (131).

5. The oil collecting block according to claim 4, characterized in that, The mounting groove (13) includes a first groove (132) and a second groove (133), the first groove (132) and the second groove (133) being located on both sides of the oil passage (12); wherein: The first groove (132) extends to the outer surface of the block (1) on the side away from the second groove (133), and forms the groove (131) on the outer surface of the block (1). The valve (2) is pressed against the side wall of the second groove (133) away from the first groove (132) at one end away from the operating end (22).

6. The oil collecting block according to claim 5, characterized in that, A sealing ring (23) is provided around the outer periphery of the valve (2), and the sealing ring (23) is pressed and confined between the groove wall of the first groove (132) and the valve (2).

7. The oil collecting block according to claim 5, characterized in that, The operating end (22) is provided with a plug interface (221), and the valve (2) is connected to the wrench through the plug interface (221).

8. The oil collecting block according to claim 4, characterized in that, The outer surface of the block (1) is provided with a first mark (141) and a second mark (142), and the valve (2) is provided with an indicator mark (24). In the first working state, the indicator mark (24) is opposite to the first mark (141), and in the second working state, the indicator mark (24) is opposite to the second mark (142).

9. The oil collecting block according to claim 1, characterized in that, Two or more oil delivery passages (11) are arranged in a row. A connecting channel (15) is provided on the block (1). The connecting channel (15) extends along the arrangement direction of the two or more oil delivery passages (11) and connects all the oil delivery passages (11). One end of the connecting channel (15) extends to the outer surface of the block (1) and forms an opening. A plug (16) is provided on the block (1). The plug (16) blocks the connecting channel (15) at the opening.

10. An injection molding machine, characterized in that, Includes the oil collection block as described in any one of claims 1-9.

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