Valve mechanism and material switching system

Abstract

The utility model provides a valve mechanism and a material switching system, relates to the technical field of valves, and solves the technical problem that the operation is complicated when different material tanks and receiving equipment are switched. The valve mechanism comprises feeding pipes, an output pipe, a driving device and blocking parts, discharging ports of at least two feeding pipes are communicated with the output pipe, the blocking parts and the discharging ports of the feeding pipes are arranged in a one-to-one correspondence mode, the blocking parts are located in the output pipe, the driving device is connected with the output pipe in a sealed mode, and the driving device is connected with the blocking parts in a driving mode. The blocking part can be driven by the driving device to move to the position for blocking or separating from the corresponding feeding pipe; according to the valve mechanism, raw materials in different material tanks can flow into the output pipe and the receiving equipment through the corresponding feeding pipes, the safety risk of manual operation can be reduced, the risk of manual mistakes during raw material switching is reduced, and the production stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve mechanism and a material switching system. Background Art

[0002] Injection molding is the process of transporting PP raw materials to the injection molding machine through the injection molding material conveying system to achieve injection molding and process the required parts. During the injection molding process, the raw materials need to be transported to the dryer, then transported to the hopper through the pipeline, and finally enter the injection molding machine for production.

[0003] In the above links, different raw materials need to be put into the injection molding machine. Different raw materials are stored in different material tanks. It is necessary to realize the connection and switching of different material tanks and receiving equipment (such as dryers) through manual switching. In the manual switching of raw materials, the material pipe port is switched in the form of a quick connector. When switching materials, first manually unplug the A material tank interface (the A material tank interface connects the material tank A with the receiving equipment), and then connect the B material tank interface, thereby connecting the material tank B with the receiving equipment and realizing material switching.

[0004] The applicant has discovered that the prior art has at least the following technical problems: switching errors may occur, resulting in incorrect materials used in production batches, leading to poor quality; manual plugging and unplugging of quick connectors is inconvenient, and long-term plugging and unplugging may cause damage to the quick connectors; manual switching takes relatively longer time, and work efficiency is low. Utility Model Content

[0005] The purpose of the utility model is to provide a valve mechanism and a material switching system to solve the technical problem of complex operation when switching between different material tanks and receiving equipment in the prior art; the many technical effects that can be produced by the preferred technical scheme among the many technical schemes provided by the utility model are detailed as follows.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The valve mechanism provided by the utility model comprises a feed pipe, an output pipe, a drive device and a blocking part, wherein:

[0008] The discharge ports of at least two of the feed pipes are connected to the output pipe, the blocking portion is arranged in one-to-one correspondence with the discharge ports of the feed pipes, the blocking portion is located in the output pipe, the driving device is sealingly connected to the output pipe, the driving device is drivingly connected to the blocking portion, and the blocking portion can be moved to a position corresponding to the feed pipe or detached under the drive of the driving device.

[0009] Preferably, the driving device includes at least a first telescopic cylinder and a second telescopic cylinder, the telescopic end of the first telescopic cylinder is connected to one of the blocking parts, and the telescopic end of the second telescopic cylinder is connected to the other blocking part, and the first telescopic cylinder and the second telescopic cylinder are used to drive the blocking parts to which they are connected to move to a position corresponding to the feeding pipe for blocking or disengagement.

[0010] Preferably, corresponding to the driving device, the feed pipe is located on opposite sides of the output pipe.

[0011] Preferably, the feed pipes are arranged at intervals along the length direction of the output pipe.

[0012] Preferably, the blocking portion includes an outer conical surface, and an inner conical surface is provided at the outlet of the feed pipe. When the blocking portion moves to a position where the outer conical surface and the inner conical surface are squeezed and fitted, the blocking portion will block the feed pipe accordingly.

[0013] Preferably, the outer diameter of the outer cone surface gradually decreases in a direction away from the corresponding driving device.

[0014] Preferably, the outer conical surface includes a first outer conical surface and a second outer conical surface, the sealing portion includes a first conical portion and a second conical portion, the first conical portion and the second conical portion are arranged with an axial spacing along the sealing portion, the outer diameter of the first conical portion is smaller than the outer diameter of the second conical portion, and the first conical portion is located at an end of the sealing portion away from the driving device, the first outer conical surface is located at the outer periphery of the first conical portion, and the second outer conical surface is located at the outer periphery of the second conical portion.

[0015] Preferably, the sealing portion is made of soft material.

[0016] Preferably, the valve mechanism further includes a control unit, which is electrically connected to the first telescopic cylinder and the second telescopic cylinder and is used to control the actions of the first telescopic cylinder and the second telescopic cylinder.

[0017] The utility model provides a material switching system, comprising a material tank, a receiving device and the valve mechanism, wherein the material tank is connected to a corresponding feed pipe, and the output pipe is connected to the receiving device.

[0018] Compared with the prior art, the valve mechanism and material switching system provided by the utility model have the following beneficial effects: when different driving devices drive the corresponding blocking parts to block or disengage the corresponding feed pipes, the raw materials in different feed pipes can enter the output pipes and flow out from the output pipes, thereby enabling different raw materials to enter the receiving equipment; the above-mentioned material switching system, using the valve mechanism, can enable the raw materials in different material tanks to flow into the output pipe and the receiving equipment through the corresponding feed pipes, which can reduce the safety risks of manual operation, reduce the risk of manual errors when switching raw materials, and improve production stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 work.

[0020] Figure 1 It is a schematic diagram of the cross-sectional structure of the valve mechanism;

[0021] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0022] Figure 3 It is a structural schematic diagram of the blocking part from one of the viewing angles;

[0023] Figure 4 It is a structural schematic diagram of the blocking part from another perspective.

[0024] In the figure, 1 is the output pipe; 20 is the inner conical surface; 21 is the first feed pipe; 22 is the second feed pipe; 23 is the third feed pipe; 31 is the first telescopic cylinder; 32 is the second telescopic cylinder; 33 is the third telescopic cylinder; 41 is the first blocking part; 42 is the second blocking part; 43 is the third blocking part; 431 is the first conical part; 432 is the second conical part; 433 is the first outer conical surface; 434 is the second outer conical surface. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. 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 implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The embodiment of the utility model provides a valve mechanism and a material switching system, which can enable raw materials in different material tanks to flow into output pipes and receiving equipment through corresponding feed pipes, thereby reducing the safety risks of manual operation.

[0029] Combine the following Figure 1-Figure 4 The technical solution provided by the utility model is described in more detail.

[0030] Embodiment 1:

[0031] The valve mechanism provided in this embodiment includes a feed pipe, an output pipe 1, a drive device and a blocking portion, wherein: the outlets of at least two feed pipes are connected to the output pipe 1 (such as Figure 1 As shown, the first feed pipe 21, the second feed pipe 22 and the third feed pipe 23 are all connected to the same output pipe 1), the blocking portion is arranged in one-to-one correspondence with the outlet of the feed pipe, the blocking portion is located in the output pipe 1, the driving device is sealed and connected to the output pipe 1, the driving device is drivingly connected to the blocking portion, and the blocking portion can be moved to a position to block or detach from the corresponding feed pipe under the drive of the driving device.

[0032] Among them, different feed pipes are connected to corresponding material tanks, and the output pipe 1 is connected to the receiving equipment, such as a dryer. During the injection molding process, the raw materials need to be transported to the dryer, then transported to the hopper through the pipeline, and finally enter the injection molding machine for production.

[0033] In the valve mechanism of this embodiment, when different driving devices drive the corresponding blocking parts to block or disengage the corresponding feed pipes, the raw materials in different feed pipes can enter the output pipe 1 and flow out of the output pipe 1, thereby enabling different raw materials to enter the receiving equipment; the raw materials in different material tanks can flow into the output pipe 1 and the receiving equipment through the corresponding feed pipes, which can reduce the safety risks of manual operation, reduce the risk of manual errors when switching raw materials, and improve production stability.

[0034] As an optional embodiment, the driving device includes at least a first telescopic cylinder 31 and a second telescopic cylinder 32, the telescopic end of the first telescopic cylinder 31 is connected to one of the blocking parts, and the telescopic end of the second telescopic cylinder 32 is connected to the other blocking part, and the first telescopic cylinder 31 and the second telescopic cylinder 32 are used to drive the blocking parts to which they are connected to move to a position to block or detach from the corresponding feed pipe.

[0035] See also Figure 1 As shown, in this embodiment, there are three feed pipes connected to the same output pipe 1, and correspondingly, the valve mechanism includes three blocking parts corresponding to the outlets of the feed pipes, and the number of driving devices is three, and the driving devices correspond to the blocking parts one by one. Of course, the number and position of the feed pipes, the blocking parts and the driving devices are all set one by one, and the number is more than two.

[0036] For details, see Figure 1 The feed pipe of this embodiment includes a first feed pipe 21, a second feed pipe 22 and a third feed pipe 23, the driving device includes a first telescopic cylinder 31, a second telescopic cylinder 32 and a third telescopic cylinder 33, and the blocking part includes a first blocking part 41, a second blocking part 42 and a third blocking part 43.

[0037] See also Figure 1 The telescopic end of the first telescopic cylinder 31 is connected to the first blocking part 41, the telescopic end of the second telescopic cylinder 32 is connected to the second blocking part 42, and the telescopic end of the third telescopic cylinder 33 is connected to the third blocking part 43. The first telescopic cylinder 31 is used to drive the first blocking part 41 to move to a position for blocking or disengaging from the first feeding pipe 21, the second telescopic cylinder 32 is used to drive the second blocking part 42 to move to a position for blocking or disengaging from the second feeding pipe 22, and the third telescopic cylinder 33 is used to drive the third blocking part 43 to move to a position for blocking or disengaging from the third feeding pipe 23.

[0038] See also Figure 1 As shown in Figure 1In the process, the third blocking part 43 blocks the third feed pipe 23, the first blocking part 41 is separated from the discharge port of the first feed pipe 21, and the second blocking part 42 is separated from the discharge port of the second feed pipe 22. At this time, the raw materials in the first feed pipe 21 and the second feed pipe 22 can enter the output pipe 1 and flow from the output pipe 1 to the receiving equipment.

[0039] Similarly, when the raw materials in the first feed pipe 21 need to enter the output pipe 1 and flow from the output pipe 1 to the receiving equipment, the first blocking portion 41 detaches from the outlet of the first feed pipe 21, the second blocking portion 42 blocks the outlet of the second feed pipe 22, and the third blocking portion 43 blocks the outlet of the third feed pipe 23.

[0040] Similarly, when the raw materials in the second feed pipe 22 need to enter the output pipe 1 and flow from the output pipe 1 to the receiving equipment, the second blocking portion 42 detaches from the outlet of the second feed pipe 22, the first blocking portion 41 blocks the outlet of the first feed pipe 21, and the third blocking portion 43 blocks the outlet of the third feed pipe 23.

[0041] As an alternative embodiment, see Figure 1 As shown, the corresponding driving device and the feed pipe are located on the opposite sides of the output pipe 1.

[0042] The above structure makes it easy for the corresponding driving device to control the corresponding blocking part to block the feed pipe, and the operation is convenient.

[0043] As an alternative embodiment, see Figure 1 As shown, the feed pipes are arranged at intervals along the length direction of the output pipe 1.

[0044] like Figure 1 In the embodiment, the first feed pipe 21, the second feed pipe 22 and the third feed pipe 23 are arranged at intervals along the length direction of the output pipe 1, which facilitates the arrangement of different feed pipes and prevents interference between structures.

[0045] As an alternative embodiment, see Figure 2-Figure 4 As shown, in this embodiment, the blocking portion includes an outer cone surface, and an inner cone surface 20 is provided at the outlet of the feed pipe. When the blocking portion moves to a position where the outer cone surface and the inner cone surface 20 are squeezed and fitted, the blocking portion will block the corresponding feed pipe.

[0046] The inner conical surface 20 is squeezed and matched with the inner conical surface 20 of the feed pipe outlet, so that the sealing performance between the sealing part and the feed pipe can be ensured to prevent leakage of raw materials.

[0047] As an optional implementation, the outer diameter of the outer cone surface gradually decreases in a direction away from the corresponding driving device.

[0048] The above structure facilitates at least a portion of the blocking portion to smoothly extend into the corresponding feed pipe, thereby facilitating the sealing cooperation between the blocking portion and the corresponding feed pipe.

[0049] As an alternative embodiment, see Figure 2-Figure 4 As shown, the outer conical surface of this embodiment includes a first outer conical surface 433 and a second outer conical surface 434, and the blocking portion includes a first conical portion 431 and a second conical portion 432. The first conical portion 431 and the second conical portion 432 are arranged at intervals along the axial direction of the blocking portion. The outer diameter of the first conical portion 431 is smaller than the outer diameter of the second conical portion 432, and is located at the end of the blocking portion away from the driving device. The first outer conical surface 433 is located at the outer periphery of the first conical portion 431, and the second outer conical surface 434 is located at the outer periphery of the second conical portion 432.

[0050] See also Figure 2 As shown, taking the third sealing part 43 sealing the third feed pipe 23 as an example, in this embodiment, the above-mentioned structure of the third sealing part 43 facilitates at least part of the third sealing part 43 to extend into the discharge port of the third feed pipe 23, and the second outer cone surface 434 is sealed with the inner cone surface 20 at the discharge port of the third feed pipe 23 to prevent the raw materials in the third feed pipe 23 from entering the output pipe 1, thereby ensuring the sealing performance between the third sealing part 43 and the third feed pipe 23.

[0051] Among them, the first conical portion 431 plays a guiding role, facilitating at least part of the third blocking portion 43 to extend into the outlet of the third feed pipe 23, and for third feed pipes 23 of different calibers, the second conical portion 432 or the first conical portion 431 is sealed and matched with the third feed pipe 23, thereby improving the scope of use.

[0052] The structures of the first blocking portion 41 and the second blocking portion 42 are the same as the third blocking portion 43. Similarly, when the first blocking portion 41 blocks the first feed pipe 21, the sealing performance between the first blocking portion 41 and the first feed pipe 21 can be guaranteed; when the second blocking portion 42 blocks the second feed pipe 22, the sealing performance between the second blocking portion 42 and the second feed pipe 22 can be guaranteed.

[0053] As an optional implementation, the blocking portion is made of a soft material, such as rubber, etc., so as to ensure the sealing performance between the corresponding blocking portion and the feeding pipe.

[0054] As an optional implementation, the valve mechanism of this embodiment further includes a control unit, which is electrically connected to the first telescopic cylinder 31, the second telescopic cylinder 32, and the third telescopic cylinder 33, and is used to control the actions of the first telescopic cylinder 31, the second telescopic cylinder 32, and the third telescopic cylinder 33, thereby improving the degree of automation. The control unit may be a single chip microcomputer with a pre-stored setting program, etc. As an existing mature technology, its structure is not described in detail here.

[0055] Embodiment 2:

[0056] This embodiment provides a material switching system, including a material tank, a receiving device and the above-mentioned valve mechanism, different material tanks are connected to corresponding feed pipes, and the output pipe 1 is connected to the receiving device.

[0057] The above-mentioned material switching system uses the valve mechanism to enable the raw materials in different material tanks to flow into the output pipe 1 and the receiving equipment through the corresponding feed pipes, which can reduce the safety risks of manual operation, reduce the risk of manual errors when switching raw materials, and improve production stability.

[0058] In the description of this specification, specific features, structures or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A valve mechanism, characterized in that: It includes a feed pipe, an output pipe, a drive device and a plugging part, wherein: The discharge ports of at least two of the feed pipes are connected to the output pipe, the blocking portion is arranged in one-to-one correspondence with the discharge ports of the feed pipes, the blocking portion is located in the output pipe, the driving device is sealingly connected to the output pipe, the driving device is drivingly connected to the blocking portion, and the blocking portion can be moved to a position corresponding to the feed pipe or detached under the drive of the driving device.

2. The valve mechanism according to claim 1, characterized in that: The driving device includes at least a first telescopic cylinder and a second telescopic cylinder, the telescopic end of the first telescopic cylinder is connected to one of the blocking parts, and the telescopic end of the second telescopic cylinder is connected to the other blocking part. The first telescopic cylinder and the second telescopic cylinder are used to drive the blocking parts to which they are connected to move to a position for blocking or detaching from the corresponding feeding pipe.

3. The valve mechanism according to claim 1, characterized in that: Corresponding to the driving device, the feed pipe is located on two opposite sides of the output pipe.

4. The valve mechanism according to claim 1, characterized in that: The feed pipes are arranged at intervals along the length direction of the output pipe.

5. The valve mechanism according to claim 1, characterized in that: The blocking portion includes an outer conical surface, and an inner conical surface is arranged at the outlet of the feed pipe. When the blocking portion moves to a position where the outer conical surface and the inner conical surface are pressed and fitted, the blocking portion will block the feed pipe accordingly.

6. The valve mechanism according to claim 5, characterized in that: The outer diameter of the outer cone surface gradually decreases in a direction away from the corresponding driving device.

7. The valve mechanism according to claim 5, characterized in that: The outer conical surface includes a first outer conical surface and a second outer conical surface, and the sealing portion includes a first conical portion and a second conical portion, the first conical portion and the second conical portion are arranged with an axial spacing along the sealing portion, the outer diameter of the first conical portion is smaller than the outer diameter of the second conical portion, and the first conical portion is located at an end of the sealing portion away from the driving device, the first outer conical surface is located at the outer periphery of the first conical portion, and the second outer conical surface is located at the outer periphery of the second conical portion.

8. The valve mechanism according to claim 2, characterized in that: The blocking part is made of soft material.

9. The valve mechanism according to claim 2, characterized in that: The valve mechanism further includes a control unit, which is electrically connected to the first telescopic cylinder and the second telescopic cylinder and is used to control the actions of the first telescopic cylinder and the second telescopic cylinder.

10. A material switching system, characterized in that: It comprises a material tank, a receiving device and the valve mechanism according to any one of claims 1 to 9, wherein the material tank is connected to the corresponding feed pipe, and the output pipe is connected to the receiving device.

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