Self-adjusting mechanism and mold

Abstract

The utility model particularly relates to a self-adjusting mechanism and a die. The self-adjusting mechanism comprises a mounting piece, a transmission piece, a first elastic piece and a jacking assembly. The mounting parts are used for being mounted on a side mold of the mold, and the two mounting parts are arranged on the side mold in a spaced mode. The transmission piece is movably arranged on the two installation pieces, and a fixed block and a movable block are arranged on the transmission piece. The first elastic piece is arranged on the transmission piece, one end of the first elastic piece abuts against the fixed block, the other end of the first elastic piece can abut against one of the two installation pieces, and the first elastic piece is used for driving the transmission piece and driving the movable block to return. The jacking assembly is used for being installed on a bottom die of the die and abuts against the transmission piece along with movement of the bottom die, and the transmission piece is pressed to drive the movable block to enter a preset position and drive the first elastic piece to deform. According to the self-adjusting mechanism disclosed by the utility model, the free movement of the loose piece on the mold is realized by adopting a mechanical structure, and the problems of difficulty in maintenance and low space utilization rate of the existing core box loose piece mechanism for the mold are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold manufacturing, in particular to a self-adjusting mechanism and a mold. Background Art

[0002] Moulds are the basic process equipment for industrial production and are known as the "mother of industry". As the basic industry of the national economy, moulds are involved in various industries such as machinery, automobiles, light industry, electronics, chemicals, metallurgy, and construction, and have a wide range of applications. Among them, the vertical mold for casting cold core boxes generally consists of side molds, bottom molds, top molds, sand-shooting plates, live blocks, blowing plates, top core plates, etc.

[0003] The existing core box movable block mechanism for molds is generally implemented by air cylinders or oil cylinders. Specifically, the movable block is hinged to the oil cylinder support on the bottom mold, and an oil cylinder is installed on the oil cylinder support, and the movable block moves under the action of the oil cylinder. However, the above method requires the oil cylinder to be controlled by electrical signals to realize the movement of the movable block, which is a complicated process and difficult to maintain. At the same time, since the air cylinder occupies a large space, the position of some movable blocks cannot be implemented due to space limitations, which seriously affects the use of the mold. In addition, the movement of the movable block also requires external power, which increases energy loss. Utility Model Content

[0004] The purpose of the utility model is to at least solve the problems of difficult maintenance and low space utilization of the existing core box movable block mechanism for molds. This purpose is achieved through the following technical solutions:

[0005] The first aspect of the utility model provides a self-adjusting mechanism, characterized in that it comprises:

[0006] A mounting member, the mounting member is used to be mounted on the side mold of the mold, the number of the mounting members is two, and the two mounting members are spaced apart on the side mold;

[0007] A transmission member, the transmission member is movably arranged on the two mounting members, and the transmission member is provided with a fixed block and a movable block;

[0008] A first elastic member, wherein the first elastic member is arranged on the transmission member, one end of the first elastic member abuts against the fixed block, and the other end of the first elastic member can abut against one of the two mounting members, and the first elastic member is used to drive the transmission member and drive the movable block to return to its original position;

[0009] A pressing component is used to be installed on the bottom mold of the mold. The pressing component can press the transmission member as the bottom mold moves. The transmission member moves under pressure and drives the movable block to enter a predetermined position, and drives the first elastic member to deform.

[0010] The self-adjusting mechanism described in the utility model includes a mounting member, a transmission member, a first elastic member and a top pressure assembly. Among them, the mounting member, the transmission member and the first elastic member can be fixed on the side mold, and the top pressure assembly can be fixed on the bottom mold. When the mold is closed, the top pressure assembly presses and pushes the transmission member with the upward movement of the bottom mold, and stops moving when the bottom mold moves to the limit position. At this time, the movable block enters the predetermined position and the first elastic member is deformed. When the mold is opened, the deformed first elastic member can drive the transmission member and drive the movable block back to its position. The present application realizes the free extension and contraction of the movable block by setting the first elastic member and using the power of the bottom mold when the mold is closed. It does not require a sensor, signal or other transmission method to ensure the synchronous operation of the movable block and the mold, which helps to reduce the dependence on manual labor and ensure the demolding of the sand core head. Moreover, the self-adjusting structure of the present application has the advantages of simple structure and convenient maintenance, and since it does not need to be connected to equipment such as a cylinder and a motor, it saves energy and space, and improves the applicability of the self-adjusting structure.

[0011] In addition, the self-adjusting mechanism according to the utility model may also have the following additional technical features:

[0012] In some embodiments of the present invention, the top pressing assembly includes:

[0013] A fixing member, the fixing member is used to be installed on the bottom mold;

[0014] An acting member, the acting member is movably arranged on the fixing member, and the acting member has a first acting surface abutting against the transmission member;

[0015] A second elastic member, wherein the second elastic member is disposed between the fixing member and the acting member, and the second elastic member has a compressed state. In the compressed state, the first elastic member drives the acting member to move along a first direction, and the first direction is the direction of the pressing assembly toward the acting member.

[0016] In some embodiments of the present invention, it also includes:

[0017] A connecting member, wherein the connecting member is arranged on the fixing member, and the connecting member has a guiding structure, and the guiding structure is slidably adapted to the acting member.

[0018] In some embodiments of the present invention, a limiting structure is provided on the connecting member, and along the first direction, the distance between the limiting structure and the fixing member is adjustable, and the limiting structure abuts against the acting member and drives the second elastic member to enter the compressed state.

[0019] In some embodiments of the present invention, it also includes:

[0020] A limiting member, wherein the limiting member is used to be installed on the side mold, and the limiting member is arranged on a side of the fixing block away from the first elastic member.

[0021] In some embodiments of the present invention, the transmission member includes a first section and a second section that are detachably connected, the fixed block is arranged on the first section, and the movable block and the first elastic member are both arranged on the second section.

[0022] In some embodiments of the present invention, a mounting groove is provided on the fixing block, and a mounting column is provided on the second section, and the mounting column is clamped in the mounting groove.

[0023] In some embodiments of the present invention, a connecting block is detachably provided at the first end of the first section, and the connecting block has a second action surface abutting against the pressing assembly.

[0024] In some embodiments of the present invention, a third action surface is provided on the movable block, and the third action surface can abut against the side mold as the movable block moves.

[0025] The second aspect of the utility model provides a mold, including a bottom mold, a side mold, and the self-adjusting mechanism described in the utility model, wherein the top pressure assembly is installed on the bottom mold, and the two mounting parts are installed on the side mold.

[0026] Compared with the prior art, the mold proposed by the present invention has the technical advantages possessed by the above-mentioned self-adjusting mechanism, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0028] Figure 1 It is a structural schematic diagram of the self-adjusting mechanism shown in the embodiment of the utility model;

[0029] Figure 2 It is a partial structural schematic diagram of the self-adjusting mechanism shown in the embodiment of the utility model;

[0030] Figure 3 It is a partial cross-sectional schematic diagram of the self-adjusting mechanism shown in the embodiment of the utility model;

[0031] Figure 4 It is a schematic diagram of the partial structure of the mold shown in the embodiment of the utility model.

[0032] The symbols in the accompanying drawings are as follows:

[0033] 100, self-adjusting mechanism; 200, bottom mold; 300, side mold;

[0034] 11. First mounting member; 12. Second mounting member;

[0035] 2. Transmission member; 21. First section; 22. Second section; 23. Fixed block; 24. Movable block; 241. Third action surface;

[0036] 3. a first elastic member;

[0037] 4. Limiting parts;

[0038] 5. Connecting blocks;

[0039] 6. Fixing parts;

[0040] 7. Action parts;

[0041] 8. Connecting piece; 81. Guide structure; 82. Limiting structure;

[0042] 9. A second elastic member. DETAILED DESCRIPTION

[0043] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0044] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0045] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0046] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0047] A mold is a tool used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. The mold generally has side molds 300, bottom molds 200, top molds, loose blocks 24, and sandblasting plates. However, the loose blocks 24 are generally set on the mold by air cylinders and oil cylinders, and move under their action. The use of automatic control to achieve the movement of the loose blocks 24 has the problem of difficult maintenance. At the same time, due to the large space occupied by the air cylinder or the oil cylinder, the position of some loose blocks 24 is limited and cannot be realized, which reduces the space utilization rate of the mold.

[0048] In order to solve the above problems, the present application proposes a self-adjusting mechanism 100 and a mold having the self-adjusting mechanism 100, so as to effectively solve the problems of difficult maintenance and low space utilization in the existing molds.

[0049] For the convenience of description, in the embodiments of the present application, only a vertical opening mold for casting a cold box is used as an example for description.

[0050] The sand core is a solid structure with a special shape made by mixing casting sand, resin and some additives in a certain proportion. It is used to form the inner cavity, holes and parts of the casting shape where sand cannot be removed. The sand core is made by a vertical mold of a casting cold box, which at least includes a side mold 300, a bottom mold 200 and a loose block 24.

[0051] like Figure 1-Figure 4 As shown, the self-adjusting mechanism 100 of the present application includes a mounting member, a transmission member 2, a first elastic member 3 and a top pressure assembly. Among them, the mounting member is used to be mounted on the side mold 300 of the mold, the number of the mounting members is two, and the two mounting members are arranged at intervals on the side mold 300. The transmission member 2 is movably arranged on the two mounting members. A fixed block 23 and a movable block 24 are arranged on the transmission member 2. The first elastic member 3 is arranged on the transmission member 2, one end of the first elastic member 3 is abutted against the fixed block 23, and the other end of the first elastic member 3 can be abutted against one of the two mounting members. The first elastic member 3 is used to drive the transmission member 2 and drive the movable block 24 to return to its position. The top pressure assembly is used to be mounted on the bottom mold 200 of the mold, and the top pressure assembly presses the transmission member 2 as the bottom mold 200 moves, and the transmission member 2 is pressed and moves and drives the movable block 24 to enter a predetermined position, and drives the first elastic member 3 to deform.

[0052] When the mold is closed, the top pressure component presses and pushes the transmission member 2 with the upward movement of the bottom mold 200. When the bottom mold 200 moves to the limit position, it stops moving. At this time, the movable block 24 enters the predetermined position and the first elastic member 3 is deformed. When the mold is opened, the deformed first elastic member 3 can drive the transmission member 2 and drive the movable block 24 back to its original position. The present application realizes the free extension and contraction of the movable block 24 by setting the first elastic member 3 and using the power of the bottom mold 200 when the mold is closed. It does not require sensors, signals or other transmission methods to ensure the synchronous operation of the movable block 24 and the mold, which helps to reduce dependence on manual labor and ensure the demolding of the sand core head. Moreover, the self-adjusting structure of the present application has the advantages of simple structure and convenient maintenance. Since it does not need to be connected to equipment such as cylinders and motors, it saves energy and space, and improves the applicability of the self-adjusting structure.

[0053] Specifically, if Figure 1 and Figure 4As shown, two mounting parts are detachably mounted on the side mold 300, and the two mounting parts are spaced apart on the side mold 300. In the present embodiment, the shape of the mounting part is a common fixed bracket, and the two mounting parts have the same structure. For ease of description, one of the two mounting parts is referred to as the first mounting part 11, and the other of the two mounting parts is referred to as the second mounting part 12. The upper part of the transmission member 2 is clamped on the first mounting part 11, and the lower part of the transmission member 2 is clamped on the second mounting part 12, so that when the mold is closed, it can be moved along the first direction under the action of an external force. Among them, the first direction is the moving direction of the above-mentioned bottom mold 200 when the mold is closed. By setting two spaced apart mounting parts, the moving direction of the transmission member 2 can be effectively guaranteed, and it is ensured that the movable block 24 on the transmission member 2 can be accurately ejected to form a sand core matching core head when the tooling is closed. Preferably, the first mounting member 11 and the second mounting member 12 are both fixed to the side mold 300 by screwing. Fixing the mounting members by screwing helps to improve the assembly efficiency of the mounting members and facilitates subsequent maintenance and replacement.

[0054] It should be understood that a fixed block 23 and a movable block 24 are provided on the transmission member 2. In the present embodiment, the transmission member 2 is a columnar structure, and at this time, the axial direction of the transmission member 2 is located on the same straight line as the first direction. Among them, the fixed block 23 is arranged close to the middle part of the transmission member 2. And at this time, the fixed block 23 is used to cooperate with one of the above-mentioned two mounting members and the first elastic member 3 to achieve driving the transmission member 2 and driving the movable block 24 to return to its position when the mold is opened. Preferably, the fixed block 23 and the transmission member 2 are manufactured as one piece, which helps to reduce the processing difficulty of the transmission member 2. At the same time, the movable block 24 is detachably arranged at one end of the transmission member 2, which helps to improve the applicability of the self-adjusting structure. Of course, in addition to this, the movable block 24 and the transmission member 2 can also be set as an integrally formed structure.

[0055] Still Figure 1 As shown, in this embodiment, the first elastic member 3 is set as a spring, which is sleeved on the transmission member 2 and is located between the fixed block 23 and the first mounting member 11. Specifically, one end of the first elastic member 3 abuts against the fixed block 23, and the other end of the first elastic member 3 can abut against the first mounting member 11. When the mold is closed, the transmission member 2 moves under the action of external force and drives the spring to compress, and at this time, one end of the spring abuts against the fixed block 23, and the other end of the spring abuts against the second mounting member 12. The compressed first elastic member 3 can drive the transmission member 2 to drive the movable block 24 back to its position when the mold is opened. The first elastic member 3 is set as a spring, because of its simple structure, it can be directly purchased and used, and can be directly sleeved on the transmission member 2, which helps to reduce the assembly cost and assembly difficulty of the self-adjusting structure. At the same time, the spring is set between the fixed block 23 and the first mounting member 11, which can effectively prevent the movable block 24 from running over when the mold reaches the limit position under the drive of the transmission member 2.

[0056] In some embodiments of the present application, the self-adjusting mechanism 100 further includes a limiter 4. The limiter 4 is used to be installed on the side mold 300, and the limiter 4 is arranged on the side of the fixed block 23 away from the first elastic member 3. In this embodiment, the structure of the limiter 4 is the same as the structure of the above-mentioned mounting member, that is, the transmission member 2 is clamped and arranged on the limiter 4, and can move along the axial direction of the transmission member 2. By setting the limiter 4 and limiting the limiter 4 to be located on the side of the fixed block 23 away from the first elastic member 3, the fixed block 23 is located between the first mounting member 11 and the limiter 4, thereby limiting the moving distance of the transmission member 2. At the same time, the setting of the limiter 4 can also effectively avoid the situation in which the transmission member 2 hits the top pressure component due to the excessive restoring force of the first elastic member 3 when opening the mold, and helps to reduce the damage of the self-adjusting mechanism 100, thereby ensuring the service life of the self-adjusting mechanism 100.

[0057] Here, it should be noted that, in addition to being arranged between the fixed block 23 and the first mounting member 11, the first elastic member 3 can also be arranged between the fixed block 23 and the second mounting member 12, and in this case, one end of the first elastic member 3 is fixedly connected to the fixed block 23, and the other end of the first elastic member 3 is fixedly connected to the second mounting member 12. When the mold is closed, the transmission member 2 is moved by the external force and drives the spring to stretch. The stretched first elastic member 3 can drive the transmission member 2 to drive the movable block 24 to return to its original position when the mold is opened. At this time, there is no need to set the above-mentioned limit member 4, but it is easy to affect the service life of the first elastic member 3.

[0058] In some embodiments of the present application, the transmission member 2 includes a first section 21 and a second section 22 that are detachably connected, wherein a fixed block 23 is disposed on the first section 21, and a movable block 24 and a first elastic member 3 are both disposed on the second section 22. Specifically, the first section 21 has a first end and a second end, wherein the first end is an end close to the top pressure assembly, and the second end is an end away from the top pressure assembly, a fixed block 23 is disposed at the second end of the first section 21, and the second section 22 is detachably disposed on the fixed block 23. In this embodiment, a mounting groove is provided on the fixed block 23, and at the same time, a boss that can be inserted into the mounting groove is provided at the first end of the second section 22, and the mounting groove and the boss are not shown in the figure. A movable block 24 is disposed at the second end of the second section 22. The second section 22 can realize a detachable connection between the first section 21 and the second section 22 by means of the snap fit between the boss and the mounting groove. The first section 21 and the second section 22 are fixed by a snap-fit ​​connection, which helps to reduce the difficulty of assembling the first elastic member 3 and effectively ensures the force and movement of the transmission member 2, making the operation of the self-adjusting structure more accurate and reliable. As a preferred implementation method, the cross-section of the mounting groove is set to a T-shaped structure to further improve the connection effect of the first section 21 and the second section 22, thereby ensuring the structural strength of the transmission member 2.

[0059] like Figure 2 As shown, in some embodiments of the present application, a third action surface 241 is provided on the movable block 24, and the third action surface 241 can abut against the side mold 300 as the movable block 24 moves. Since the side mold 300 is provided with perforations for the movable block 24 to extend in and out, and when the tooling is closed, the movable block 24 extends into the side mold 300 as the transmission member 2 moves to form a sand core matching core head. In order to further prevent the movable block 24 from running over, the movable block 24 is provided on the third action surface 241, so that it cooperates with the side mold 300 to form a limit. As a preferred embodiment, a chamfer is provided on the circumference of the movable block 24, and the chamfered inclined surface is the third action surface 241. Setting the third action surface 241 as an inclined surface can effectively ensure the accuracy of the size of the movable block 24.

[0060] In addition, in some embodiments of the present application, a connecting block 5 is detachably provided at the first end of the first section 21, and the connecting block 5 has a second action surface that abuts against the top pressure assembly. The provision of the connecting block 5 can effectively increase the abutment area between the transmission member 2 and the top pressure assembly, thereby further ensuring that the force and movement of the transmission member 2 can be accurately implemented. In this embodiment, a threaded hole is provided on the end face of the second end of the first section 21, and at the same time, a fixing hole is provided on the connecting block 5, and the connecting block 5 can be fixed to the second end of the first section 21 by a bolt or screw passing through the fixing hole. The detachable connection of the connecting block 5 by bolt connection helps to reduce the difficulty of assembling the self-adjusting structure.

[0061] When the bottom mold 200 is in place, the equipment performs sand shooting to form a sand core in the mold. During the core making process, loose sand and sand blocks can easily fall into the bottom mold 200, causing a certain gap between the bottom mold 200 and the side mold 300, which will eventually cause the tappet core head column to fail to reach the required height, resulting in the sand core being scrapped.

[0062] In order to solve the above technical problems, the top pressing assembly of the present application includes a fixing member 6, an action member 7 and a second elastic member 9. Among them, the fixing member 6 is used to be installed on the bottom mold 200. The action member 7 is movably arranged on the fixing member 6, and the action member 7 has a first action surface abutting against the transmission member 2. The second elastic member 9 is arranged between the fixing member 6 and the action member 7, and the second elastic member 9 has a compressed state. In the compressed state, the first elastic member 3 drives the action member 7 to move along the first direction, and the first direction is the moving direction of the bottom mold 200.

[0063] Specifically, the fixing member 6 is detachably connected to the bottom mold 200, and the action member 7 and the second elastic member 9 are both arranged on the fixing member 6. The fixing member 6 and the bottom mold 200 are arranged to be detachably connected, which further reduces the difficulty of assembly and maintenance of the self-adjusting structure. The action member 7 can be slidably arranged on the fixing member 6, for example, a slide groove is arranged on the fixing member 6, and the action member 7 is slidably arranged in the slide groove, and at the same time, a second elastic member 9 is arranged between the fixing member 6 and the action member 7, and the second elastic member 9 can be arranged as a spring, and the two ends of the spring are connected to the fixing member 6 and the action member 7. When the mold is closed, the action member 7 abuts against the connecting block 5 with the movement of the bottom mold 200, and pushes the transmission member 2 with the further movement of the bottom mold 200. The spring has a certain amount of compression due to the action of external force, and reduces the distance between the fixing member 6 and the action member 7 in the first direction. Preferably, the second elastic member 9 is arranged as a butterfly spring.

[0064] It should be understood that when the mold is closed, the fixing member 6 drives the action member 7 and the second elastic member 9 to move along the first direction. When the action member 7 abuts against the connecting block 5, the connecting block 5 will push the transmission member 2 and the first elastic member 3 to move, and drive the movable block 24 to extend into the side mold 300. When the bottom mold 200 moves to the limit position, it stops moving, and at this time, the movable block 24 enters the predetermined position, the first elastic member 3 is compressed, the second elastic member 9 is compressed, and the force of the second elastic member 9 is greater than the force of the first elastic member 3. Then, the equipment performs sand shooting to form a sand core in the mold. Because the loose sand and sand blocks fall into the bottom mold 200, there is a certain gap between the bottom mold 200 and the side mold 300, and at this time, the compression amount of the second elastic member 9 will be automatically adjusted to compensate for the gap between the bottom mold 200 and the side mold 300, thereby ensuring that the movable block 24 reaches the predetermined position. By setting the top pressure component, the height of the connecting block can be automatically adjusted to ensure the consistency of the sand core and the core head size, which helps to solve the problem of shallow core head caused by loose sand padding and tooling.

[0065] In some embodiments of the present application, the top pressing assembly further includes a connecting member 8, which is disposed on the fixing member 6, and has a guide structure 81, which is slidably adapted to the action member 7. Figure 3 As shown, the fixing member 6 is configured as a columnar structure, and a mounting hole is provided on the top surface of the fixing member 6, and the connecting member 8 is screwed into the mounting hole. The connecting member 8 has a guide structure 81, which is configured as a rod, and at this time, the second elastic member 9 is sleeved on the guide structure 81, and one end of the second elastic member 9 abuts against the fixing member 6, and the other end of the second elastic member 9 is connected to the action member 7. By providing the connecting member 8 with the guide structure 81, on the one hand, it helps to further reduce the difficulty of assembling the top pressure assembly, and on the other hand, it can effectively ensure that the deformation of the second elastic member 9 and the movement of the action member 7 are accurately implemented.

[0066] Still Figure 3 As shown, in some embodiments of the present application, a limiting structure 82 is provided on the connecting member 8, and the spacing between the limiting structure 82 and the fixing member 6 is adjustable along the first direction, and the limiting structure 82 abuts against the action member 7 and drives the second elastic member 9 into a compressed state. By providing the limiting structure 82 on the connecting member 8, it can not only be used to realize the fixed installation of the action member 7 on the fixing member 6, but also can be used to adjust the spacing between the action member 7 and the fixing member 6, so as to ensure that the spacing between the action member 7 and the above-mentioned transmission member 2 is greater than or equal to zero, that is, to ensure that the self-adjusting mechanism 100 can be implemented. In this embodiment, the connecting member 8 is set as a bolt. Among them, the head of the bolt is the limiting structure 82, and the screw of the bolt is the above-mentioned guide structure 81. At this time, an assembly groove is provided on the action member 7, the head is accommodated in the assembly groove, and the screw passes through the action member 7 and is screwed to the fixing member 6. The degree of tightening of the bolts on the fixing member 6 determines the distance between the limiting structure 82 and the fixing member 6. Using bolts as the connecting member 8 helps to reduce the difficulty of assembling the self-adjusting mechanism 100 and simplify the structure of the self-adjusting mechanism 100.

[0067] The present embodiment also relates to a mold, which includes a bottom mold 200, a side mold 300, and the self-adjusting mechanism 100 as described above, wherein the top pressure assembly is installed on the bottom mold 200, and two mounting parts are installed on the side mold 300.

[0068] This embodiment realizes the free expansion and contraction of the movable block 24 by mechanical structure control by setting the first elastic member 3 and using the power of the bottom mold 200, and does not require signal transmission, so as to achieve the purpose of synchronous operation of the movable block 24 and the equipment, and effectively ensure the demolding of the sand core head. At the same time, by setting the top pressure component, the gap between the bottom mold 200 and the side mold 300 caused by loose sand falling into the bottom mold 200 is compensated, the self-adjustment function of the movable block 24 is realized, the accuracy of the sand core head is improved, and the scrapping of the sand core is avoided.

[0069] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model 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 self-adjusting mechanism, characterized in that: include: A mounting member, the mounting member is used to be mounted on the side mold of the mold, the number of the mounting members is two, and the two mounting members are spaced apart on the side mold; A transmission member, the transmission member is movably arranged on the two mounting members, and the transmission member is provided with a fixed block and a movable block; A first elastic member, wherein the first elastic member is arranged on the transmission member, one end of the first elastic member abuts against the fixed block, and the other end of the first elastic member can abut against one of the two mounting members, and the first elastic member is used to drive the transmission member and drive the movable block to return to its original position; A pressing component is used to be installed on the bottom mold of the mold. The pressing component can press the transmission member as the bottom mold moves. The transmission member moves under pressure and drives the movable block to enter a predetermined position, and drives the first elastic member to deform.

2. The self-adjusting mechanism according to claim 1, characterized in that: The top pressure assembly comprises: A fixing member, the fixing member is used to be installed on the bottom mold; An acting member, the acting member is movably arranged on the fixing member, and the acting member has a first acting surface abutting against the transmission member; A second elastic member, wherein the second elastic member is disposed between the fixing member and the acting member, and the second elastic member has a compressed state. In the compressed state, the first elastic member drives the acting member to move along a first direction, and the first direction is the direction of the pressing assembly toward the acting member.

3. The self-adjusting mechanism according to claim 2, characterized in that: Also includes: A connecting member, wherein the connecting member is arranged on the fixing member, and the connecting member has a guiding structure, and the guiding structure is slidably adapted to the acting member.

4. The self-adjusting mechanism according to claim 3, characterized in that: The connecting member is provided with a limiting structure, and along the first direction, the distance between the limiting structure and the fixing member is adjustable, and the limiting structure abuts against the acting member and drives the second elastic member to enter the compressed state.

5. The self-adjusting mechanism according to claim 1, characterized in that: Also includes: A limiting member, wherein the limiting member is used to be installed on the side mold, and the limiting member is arranged on a side of the fixing block away from the first elastic member.

6. The self-adjusting mechanism according to claim 1, characterized in that: The transmission member comprises a first section and a second section which are detachably connected, the fixed block is arranged on the first section, and the movable block and the first elastic member are both arranged on the second section.

7. The self-adjusting mechanism according to claim 6, characterized in that: The fixing block is provided with a mounting groove, the second section is provided with a mounting column, and the mounting column is clamped in the mounting groove.

8. The self-adjusting mechanism according to claim 6, characterized in that: A connecting block is detachably provided at the first end of the first section, and the connecting block has a second action surface abutting against the pressing assembly.

9. The self-adjusting mechanism according to claim 1, characterized in that: The movable block is provided with a third action surface, and the third action surface can abut against the side mold as the movable block moves.

10. A mold, characterized in that: It comprises a bottom mold, a side mold, and a self-adjusting mechanism as described in any one of claims 1 to 9, wherein the top pressure assembly is installed on the bottom mold, and the two mounting parts are installed on the side mold.

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