Pressing plate assembly and molding machine

Abstract

The utility model provides a pressing plate assembly and a molding machine, the pressing plate assembly comprises a mounting base, a transmission mechanism, a first driver and a pressing plate, a transmission chamber is formed in the mounting base, the mounting base is provided with an input hole and an output hole which are communicated with the transmission chamber, the output hole is used for allowing a lifting rod to penetrate through, and the transmission mechanism is arranged in the transmission chamber; the transmission mechanism is in transmission connection with the lifting rod, the first driver is arranged on the mounting seat, an output shaft of the first driver extends into the input hole and is in transmission connection with the transmission mechanism, the first driver is used for driving the mounting seat to move along the lifting rod, and the pressing plate is arranged on the mounting seat. The pressing plate assembly drives the pressing plate to extrude molding sand or other target objects, the transmission mechanism is arranged in the transmission chamber, particulate matter such as the molding sand can be prevented from invading the transmission mechanism, transmission smoothness and accuracy are not affected, and the pressing plate assembly is beneficial to reducing the risk that the transmission mechanism is invaded. The utility model relates to the field of molding machines.

Description

Technical Field

[0001] The present application relates to the field of molding machines, and in particular to a pressing plate assembly and a molding machine. Background Art

[0002] The molding machine is a kind of casting equipment used to make sand molds. During use, the molding sand in the sand box is compacted by a pressing plate to obtain a sand mold for casting.

[0003] In some related technologies, the upper platen is pre-positioned and compacted by moving the lower platen upward. In other related technologies, the upper and lower platens are moved simultaneously for compaction. In both processes, the platens are driven by a first driver. However, due to the large amount of molding sand present in the molding machine's operating environment, molding sand or other dust particles can easily intrude into the transmission mechanism, resulting in uneven movement of the platens or reduced movement accuracy. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a pressing plate assembly and a molding machine, wherein the pressing plate assembly helps to reduce the risk of the transmission mechanism being invaded.

[0005] According to the pressure plate assembly provided in the present application, it includes a mounting seat, a transmission mechanism, a first driver and a pressure plate. A transmission chamber is formed inside the mounting seat. The mounting seat is provided with an input hole and an output hole connected to the transmission chamber. The output hole is used to pass a lifting rod. The transmission mechanism is arranged in the transmission chamber. The transmission mechanism is connected to the lifting rod in terms of transmission. The first driver is arranged on the mounting seat. The output shaft of the first driver extends into the input hole and is connected to the transmission mechanism in terms of transmission. The first driver is used to drive the mounting seat to move along the lifting rod. The pressure plate is arranged on the mounting seat.

[0006] The pressure plate assembly provided in the present application has at least the following technical effects: the pressure plate assembly drives the pressure plate to squeeze the molding sand or other target objects. By arranging the transmission mechanism in the transmission chamber, it can prevent particles such as molding sand from invading the transmission mechanism and affecting the smoothness and accuracy of the transmission. The pressure plate assembly helps to reduce the risk of the transmission mechanism being invaded.

[0007] According to some embodiments of the present application, the two output holes in a pair are aligned on both sides of the mounting base, and the lifting rod passes through one of the output holes into the transmission chamber and then passes through the other output hole.

[0008] According to some embodiments of the present application, the pressure plate assembly includes a protective cover, which is arranged on the outside of the mounting seat. A protective chamber connected to the output hole is formed inside the protective cover, and the protective chamber is used to accommodate the lifting rod passing through the output hole.

[0009] According to some embodiments of the present application, the pressure plate assembly includes an end cover, which is arranged on the outside of the mounting base. The end cover is provided with a through hole, which is aligned with the output hole. The diameter of the through hole is larger than the diameter of the lifting rod and smaller than the diameter of the output hole. A rotating bearing is provided in the output hole, and the end cover positions the rotating bearing.

[0010] According to some embodiments of the present application, the protective cover is provided on the end cover.

[0011] According to some embodiments of the present application, the mounting seat includes a first cover plate, a second cover plate and a surrounding plate, the first cover plate is arranged on one side of the surrounding plate, the second cover plate is arranged on the other side of the surrounding plate, the first cover plate, the second cover plate and the surrounding plate surround and define the transmission chamber, and the first cover plate and the surrounding plate are detachably connected.

[0012] According to some embodiments of the present application, the transmission mechanism includes a first sprocket, a second sprocket and a chain, the first sprocket is arranged on the output shaft, the second sprocket is arranged on the lifting rod, the second sprocket and the lifting rod are threadedly connected, and the chain is wound around the first sprocket and the second sprocket.

[0013] According to some embodiments of the present application, the transmission mechanism also includes a third sprocket, the pressure plate assembly includes a mounting shaft, the mounting shaft is arranged in the transmission chamber, the third sprocket is arranged on the mounting shaft, and the chain is wound around the third sprocket.

[0014] According to the molding machine provided in the present application, the molding machine includes an upper bracket, a lifting rod and the pressure plate assembly as described above, the lifting rod is arranged on the upper bracket, and the lifting rod and the pressure plate assembly are transmission-connected.

[0015] According to some embodiments of the present application, the molding machine also includes a second drive, an upper movable plate and an upper sand box, the second drive is arranged on the upper bracket, the second drive is connected to the upper movable plate, the second drive is used to drive the upper movable plate close to or away from the upper bracket, and the upper sand box is arranged on the upper movable plate.

[0016] The molding machine provided in the present application includes the pressure plate assembly provided in the present application, so the molding machine correspondingly has the beneficial effects provided by the pressure plate assembly, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the technical solutions disclosed in this application and constitute a part of the specification. Together with the embodiments disclosed in this application, they are used to explain the technical solutions disclosed in this application and do not constitute a limitation on the technical solutions disclosed in this application.

[0018] Figure 1 1 is a schematic diagram of a partial structure of a molding machine according to an embodiment of the present application, wherein dotted lines are used to illustrate internal lines;

[0019] Figure 2 1 is a schematic structural diagram of a pressure plate assembly according to an embodiment of the present application, wherein internal lines are shown using dotted lines;

[0020] Figure 3 It is a schematic structural diagram of the dustproof oil seal according to an embodiment of the present application.

[0021] Reference numerals:

[0022] Mounting base 110, transmission chamber 111, first cover plate 112, second cover plate 113, enclosure plate 114, transmission mechanism 120, first sprocket 121, second sprocket 122, chain 123, third sprocket 124, first driver 130, pressing plate 140, protective cover 150, end cover 160, rotating bearing 170, mounting shaft 180;

[0023] Upper bracket 510 , lifting rod 520 , second driver 530 , upper movable plate 540 , upper sand box 550 , and oil seal 560 . DETAILED DESCRIPTION

[0024] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0025] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0026] In the description of this application, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0027] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0028] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" 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 present application. In this specification, the illustrative expressions 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 suitable manner in any one or more embodiments or examples.

[0029] A molding machine is a type of casting equipment used to create sand molds. Generally speaking, it consists of a header, middle, and lower flasks, as well as an upper and lower platen. These components form a molding cavity, into which the header and lower flasks inject sand, while the upper and lower platens compact the sand to create the sand mold.

[0030] The upper and lower pressure plates need to move to complete the compaction action, but during the production process, the molding sand can easily invade the transmission mechanism, causing movement failure.

[0031] For this purpose, refer to Figure 1 and Figure 2 According to the embodiment of the pressure plate assembly provided in the present application, it includes a mounting base 110, a transmission mechanism 120, a first driver 130 and a pressure plate 140. A transmission chamber 111 is formed inside the mounting base 110. The mounting base 110 is provided with an input hole and an output hole connected to the transmission chamber 111. The output hole is used to pass through the lifting rod 520. The transmission mechanism 120 is arranged in the transmission chamber 111. The transmission mechanism 120 is connected to the lifting rod 520 in transmission. The first driver 130 is arranged on the mounting base 110. The output shaft of the first driver 130 extends into the input hole and is connected to the transmission mechanism 120 in transmission. The first driver 130 is used to drive the mounting base 110 to move along the lifting rod 520. The pressure plate 140 is arranged on the mounting base 110.

[0032] When in use, the pressure plate assembly drives the pressure plate 140 to squeeze the molding sand. By setting the transmission mechanism 120 in the transmission chamber 111, it can prevent particles such as molding sand from invading the transmission mechanism 120 and affecting the smoothness and accuracy of the transmission. The pressure plate assembly helps to reduce the risk of the transmission mechanism 120 being invaded.

[0033] Furthermore, the present application also provides a molding machine, which includes the pressure plate assembly of the present application.

[0034] The molding machine includes a pressing plate assembly, so the molding machine has the beneficial effects provided by the pressing plate assembly, which will not be described in detail here.

[0035] Reference Figure 1 In some embodiments, the pressing plate 140 can be used as an upper pressing plate of a molding machine. In this case, the molding machine further includes an upper bracket 510 and a lifting rod 520. The lifting rod 520 is arranged on the upper bracket 510, and the lifting rod 520 is transmission-connected to the pressing plate assembly.

[0036] Furthermore, in some embodiments, the molding machine also includes a second driver 530, an upper movable plate 540 and an upper sand box 550, the second driver 530 is arranged on the upper bracket 510, the second driver 530 is connected to the upper movable plate 540, the second driver 530 is used to drive the upper movable plate 540 close to or away from the upper bracket 510, and the upper sand box 550 is arranged on the upper movable plate 540.

[0037] Of course, the pressing plate 140 of the present application can also be used as the lower pressing plate of the molding machine, and the present application does not impose any restrictions on this.

[0038] In some embodiments, the molding machine further comprises a guide shaft extending in the vertical direction, and the upper movable plate 540 is sleeved on the guide shaft and moves along the guide shaft, thereby accurately positioning the route. Figure 3 In some embodiments, an oil seal 560 may be provided on the upper movable plate 540. The oil seal 560 is provided on the upper movable plate 540, and the guide shaft passes through the oil seal. The oil seal protects and seals the connection between the guide shaft and the upper movable plate 540 to prevent leakage of lubricating oil or grease, and also to prevent intrusion of dust or molding sand.

[0039] Leaked grease will combine with dust to form dirt that is difficult to clean. In order to improve the anti-leakage effect, in some embodiments, the oil seal 560 adopts a multi-layer design, that is, the oil seal 560 has at least two sealing rings arranged at intervals, thereby effectively improving the sealing effect.

[0040] In addition, to facilitate cleaning, in some embodiments, the edge of the oil seal 560 is provided with a bevel, which helps the overflowed grease to flow outward along the bevel and avoid accumulation on the upper surface of the oil seal 560 and combining with dust.

[0041] Back to the pressure plate assembly, it is understandable that in order to adapt to sand molds of different specifications, the moving stroke of the pressure plate assembly is often relatively large. If it is to be ensured that the end of the lifting rod 520 is always in the transmission chamber 111 during movement, a larger transmission chamber 111 will need to be set up, resulting in the mounting base 110 being too large and not streamlined enough.

[0042] To this end, in some embodiments, two pairs of output holes are aligned on both sides of the mounting base 110 , and the lifting rod 520 passes through one of the output holes into the transmission chamber 111 and then passes through the other output hole.

[0043] In this way, the axial dimension of the transmission chamber 111 in the lifting rod 520 only needs to meet the setting requirements of the transmission mechanism 120, which helps to compress the space occupied by the transmission chamber 111 and reduce the size of the mounting seat.

[0044] In addition, the output hole at this time can also be used to position the lifting rod 520, and the positioning method of two positioning points can make the pressure plate assembly have higher movement accuracy.

[0045] Specifically, in some embodiments, the pressure plate assembly includes an end cover 160, which is arranged on the outside of the mounting base 110. The end cover 160 has a through hole, which is aligned with the output hole. The diameter of the through hole is larger than the diameter of the lifting rod 520 and smaller than the diameter of the output hole. A rotating bearing 170 is provided in the output hole, and the end cover 160 positions the rotating bearing 170.

[0046] While positioning the lifting rod 520 , rotating the bearing 170 also allows the lifting rod 520 to move more smoothly.

[0047] However, at this time, the lifting rod 520 passing through the transmission chamber 111 is exposed to the external environment and is easily affected by the molding sand.

[0048] In some embodiments, reference Figure 2 The pressure plate assembly includes a protective cover 150, which is arranged on the outside of the mounting base 110. A protective chamber connected to the output hole is formed inside the protective cover 150, and the protective chamber is used to accommodate the lifting rod 520 passing through the output hole.

[0049] The protective cover 150 protects the lifting rod 520, thereby reducing the risk of the transmission mechanism being invaded.

[0050] In some embodiments, the protective cover 150 may be disposed on the end cap 160 .

[0051] It should be noted that the transmission mechanism requires routine maintenance, so the transmission chamber needs to be openable. For example, in some embodiments, the mounting base 110 includes a first cover plate 112, a second cover plate 113, and a surrounding plate 114. The first cover plate 112 is disposed on one side of the surrounding plate 114, and the second cover plate 113 is disposed on the other side of the surrounding plate 114. The first cover plate 112, the second cover plate 113, and the surrounding plate 114 surround and define the transmission chamber 111, and the first cover plate 112 and the surrounding plate 114 are detachably connected.

[0052] In this way, by removing the first cover plate 112 , the transmission mechanism 120 located in the transmission chamber 111 can be exposed so as to perform relevant installation and maintenance operations.

[0053] In the present application, the transmission mechanism 120 can realize transmission connection in different ways. Figure 2 The transmission mechanism includes a first sprocket 121, a second sprocket 122 and a chain 123. The first sprocket 121 is set on the output shaft, the second sprocket 122 is set on the lifting rod 520, the second sprocket 122 and the lifting rod 520 are threadedly connected, and the chain 123 is wound around the first sprocket 121 and the second sprocket 122.

[0054] On the one hand, the chain drive can improve the transmission stability under heavy load conditions, so that the pressure plate assembly can meet the needs of pressing sand molds; on the other hand, the chain 123 can bend and deform, so that the path of the chain 123 can be flexibly adjusted and designed as needed, providing more flexibility for the design of the transmission chamber 111.

[0055] For example, in some embodiments, the transmission mechanism further includes a third sprocket 124 , the pressure plate assembly includes a mounting shaft 180 , the mounting shaft 180 is disposed in the transmission chamber 111 , the third sprocket 124 is disposed on the mounting shaft 180 , and the chain 123 is wound around the third sprocket 124 .

[0056] On the one hand, the arrangement of the third sprocket 124 can help adjust the path of the chain 123 . On the other hand, the third sprocket 124 can also act as a tensioner to prevent the chain 123 from malfunctioning, such as tooth jumping.

[0057] In addition to chain transmission, if conditions permit, the transmission mechanism 120 can also use gear transmission, belt transmission, etc., which will not be described in detail here.

[0058] In some optional embodiments, the functions / operations mentioned in the block diagram may not occur in the order mentioned in the operation diagram. For example, depending on the functions / operations involved, the two boxes shown in succession may actually be executed substantially simultaneously or the boxes can sometimes be executed in reverse order. In addition, the embodiments presented and described in the flow chart of the present application are provided in an exemplary manner for the purpose of providing a more comprehensive understanding of the technology. The disclosed method is not limited to the operations and logic flows presented herein. Optional embodiments are contemplated in which the order of the various operations is changed and the sub-operations described as a part of a larger operation are performed independently.

[0059] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A pressure plate assembly, characterized in that: include: A mounting seat, wherein a transmission chamber is formed inside the mounting seat, and the mounting seat is provided with an input hole and an output hole communicating with the transmission chamber, wherein the output hole is used to pass a lifting rod; A transmission mechanism, the transmission mechanism is arranged in the transmission chamber and is in transmission connection with the lifting rod; a first driver, the first driver being disposed on the mounting seat, the output shaft of the first driver extending into the input hole and being in transmission connection with the transmission mechanism, the first driver being used to drive the mounting seat to move along the lifting rod; A pressing plate is arranged on the mounting seat.

2. The pressure plate assembly according to claim 1, wherein: The two output holes are aligned on both sides of the mounting seat, and the lifting rod passes through one of the output holes into the transmission chamber and then passes through the other output hole.

3. The pressure plate assembly according to claim 2, wherein: The pressure plate assembly includes a protective cover, which is arranged on the outside of the mounting seat. A protective chamber connected to the output hole is formed inside the protective cover, and the protective chamber is used to accommodate the lifting rod passing through the output hole.

4. The pressure plate assembly according to claim 3, wherein: The pressure plate assembly includes an end cover, which is arranged on the outside of the mounting seat. The end cover is provided with a through hole, and the through hole is aligned with the output hole. The diameter of the through hole is larger than the diameter of the lifting rod and smaller than the diameter of the output hole. A rotating bearing is provided in the output hole, and the end cover positions the rotating bearing.

5. The pressure plate assembly according to claim 4, wherein: The protective cover is arranged on the end cover.

6. The pressure plate assembly according to claim 1, wherein: The mounting seat includes a first cover plate, a second cover plate and a surrounding plate, the first cover plate is arranged on one side of the surrounding plate, the second cover plate is arranged on the other side of the surrounding plate, the first cover plate, the second cover plate and the surrounding plate surround and define the transmission chamber, and the first cover plate and the surrounding plate are detachably connected.

7. The pressure plate assembly according to claim 1, wherein: The transmission mechanism includes a first sprocket, a second sprocket and a chain. The first sprocket is arranged on the output shaft, the second sprocket is arranged on the lifting rod, the second sprocket is threadedly connected to the lifting rod, and the chain is wound around the first sprocket and the second sprocket.

8. The pressure plate assembly according to claim 7, wherein: The transmission mechanism further includes a third sprocket, the pressure plate assembly includes a mounting shaft, the mounting shaft is disposed in the transmission chamber, the third sprocket is disposed on the mounting shaft, and the chain is wound around the third sprocket.

9. A molding machine, characterized in that: The molding machine includes an upper bracket, a lifting rod and the pressure plate assembly according to any one of claims 1 to 8, the lifting rod is arranged on the upper bracket, and the lifting rod and the pressure plate assembly are transmission-connected.

10. The molding machine according to claim 9, characterized in that The molding machine also includes a second drive, an upper movable plate and an upper sand box. The second drive is arranged on the upper bracket, the second drive is connected to the upper movable plate, and the second drive is used to drive the upper movable plate to move closer to or away from the upper bracket. The upper sand box is arranged on the upper movable plate.

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