Dual-station core making machine

Abstract

A dual-station core making machine, comprising a support (1), a first clamping device (2), a second clamping device (3), a drive device (4), a sand shooting device (5) and a lifting device (6). A core-making mold (100) is arranged on a first bearing platform (11) of the support (1); under the action of the drive device (4), the first bearing platform (11) is arranged opposite the sand shooting device (5), and a side mold (110) of the core-making mold (100) is clamped by the first clamping device (2), thereby shooting sand into a forming cavity under the action of the sand shooting device (5); at the same time, another core-making mold (100) is placed on a second bearing platform (12) of the support (1), and said core-making mold (100) is clamped by the second clamping device (3). After the sand shooting device (5) completes sand shooting and a sand core is formed, under the action of the drive device (4), the first bearing platform (11) is arranged opposite the lifting device (6), and the second bearing platform (12) is arranged opposite the sand shooting device (5), thereby removing a core box upper mold (120) under the action of the lifting device (6).

Description

Double-station core making machine

[0001] This application claims priority to the Chinese patent application No. 202410845244.3 filed on June 27, 2024 with the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of casting equipment, for example, to a double-station core making machine. BACKGROUND

[0003] A core making machine is a device for making sand cores by shooting sand and curing in a core making mold. Most core making machines use a set of core making molds to sequentially perform clamping, sand shooting, curing, and core ejection in steps, and then remove the formed and cured sand core, and then start production of the next sand core. During this process, there is a waiting time after each process is completed in one core making cycle, and the process time in one core making production cycle accounts for more than 75%. Even if the mechanical movement cycle of the core making machine is improved, the core making production efficiency is still low and cannot be effectively improved. SUMMARY

[0004] The present application provides a double-station core making machine to improve the production efficiency of sand cores.

[0005] The present application provides a double-station core making machine, comprising:

[0006] A support is provided with a first bearing table and a second bearing table, and the first bearing table and the second bearing table are configured to bear the lower mold of the core box of the core making mold.

[0007] A first clamping device is provided on the first bearing table, and the first clamping device is configured to clamp the side mold of the core making mold on the first bearing table.

[0008] A second clamping device is provided on the second bearing table, and the second clamping device is configured to clamp the side mold of the core making mold on the second bearing table.

[0009] A driving device is connected to the support at the driving end and is configured to drive the support to rotate.

[0010] A sand shooting device is provided above one of the first bearing table and the second bearing table, the sand shooting port of the sand shooting device is oppositely arranged with the sand inlet of the core making mold corresponding to the sand shooting port, and the sand shooting device is configured to shoot sand into the forming cavity of the core making mold.

[0011] a lifting device disposed above the other of the first and second supporting tables, a lifting end of the lifting device being disposed opposite to a core box upper mold of the core making mold corresponding to the lifting end, and the lifting device being configured to lift the core box upper mold.

[0012] In one or more embodiments, the sand shooting device comprises a sand storage cylinder, a shooting head, and a pressing mechanism, the sand storage cylinder being in communication with the shooting head to deliver core sand to the shooting head, the shooting head being disposed at a pressing end of the pressing mechanism, and the pressing mechanism being configured to push the shooting head to apply a pressing force to the core box upper mold.

[0013] In one or more embodiments, the sand shooting device further comprises a loosening mechanism, the loosening mechanism being disposed at the shooting head, a loosening end of the loosening mechanism being connected to the core box upper mold, and the loosening mechanism being configured to drive the core box upper mold to rotate in a preset direction.

[0014] In one or more embodiments, the loosening mechanism comprises a driving member and a driving block, the driving block being disposed at a driving end of the driving member and abutting against a supporting lug disposed on an outer peripheral wall of the core box upper mold, and the driving member being disposed at the shooting head and being configured to drive the driving block to move in a preset direction.

[0015] In one or more embodiments, the driving block is provided with a limiting portion adapted to the supporting lug.

[0016] The driving end of the driving member is capable of reciprocating.

[0017] In one or more embodiments, the driving device comprises:

[0018] a rotary motor;

[0019] a rotary workbench disposed at a rotating end of the rotary motor;

[0020] a supporting mechanism disposed between the rotary workbench and the support to support the support.

[0021] In one or more embodiments, the supporting mechanism comprises:

[0022] a supporting seat disposed at the rotary workbench, and the support being disposed at a middle position of a top of the supporting seat;

[0023] a plurality of guiding members, any guiding member comprising a contact portion and a guiding portion coaxially disposed, the contact portion abutting against a bottom of the support, and the plurality of guiding portions being slidingly and uniformly distributed at edge positions of the supporting seat.

[0024] a plurality of elastic members corresponding to the plurality of guide members, any elastic member being compressed between the support base and the corresponding abutting portion to have an elastic potential energy of recovering deformation after the support moves upward.

[0025] In one or more embodiments, an end of the guide portion away from the abutting portion penetrates the support base;

[0026] The support mechanism further comprises a plurality of support rods arranged circumferentially on the rotating table, and the plurality of support rods are arranged one-to-one corresponding to the plurality of guide portions.

[0027] In one or more embodiments, the first clamping device comprises:

[0028] A positioning mechanism, one side mold of the core making mold is detachably arranged at a positioning end of the positioning mechanism, and the positioning mechanism is configured to push the core making mold towards the other side mold of the core making mold in a one-way manner;

[0029] A clamping mechanism, the other side mold of the core making mold is detachably arranged at a clamping end of the clamping mechanism, and the clamping end is configured to push the core making mold towards the positioning end in a one-way manner.

[0030] In one or more embodiments, the lifting device comprises a lifting member and a clamping member, the clamping member is arranged at a lifting end of the lifting member, and the lifting member is configured to control the height of the clamping member, and the clamping member is configured to clamp the lug on the outer peripheral wall of the core box upper mold.

[0031] In one or more embodiments, the double-station core making machine further comprises a jacking device, the jacking device is arranged at the support, and the jacking device is arranged opposite to the lifting device to lift the formed sand core to be separated from the support.

[0032] In one or more embodiments, the jacking device comprises:

[0033] Two pushing mechanisms, the two pushing mechanisms are respectively at the first bearing table and the second bearing table, and the two pushing mechanisms can abut against the formed sand core;

[0034] A jacking mechanism, the jacking mechanism is arranged adjacent to the driving device, and the jacking mechanism is arranged opposite to the lifting device; the jacking mechanism is configured to push the pushing mechanism to move upward when one of the pushing mechanisms moves above the jacking mechanism.

[0035] In one or more embodiments, the pushing mechanism comprises:

[0036] a push rod, which penetrates the first bearing table or the second bearing table, and an end of the push rod is in abutment with the sand core;

[0037] a connecting plate, which is connected to an end of the push rod away from the sand core;

[0038] a reset member, which is arranged between the connecting plate and the first bearing table or the second bearing table. BRIEF DESCRIPTION OF DRAWINGS

[0039] Fig. 1 is a structural schematic diagram of a double-station core making machine provided in an embodiment of the present application;

[0040] Fig. 2 is a schematic diagram of a connection relationship among a sand shooting device, a core making mold, a first bearing table and a first clamping device provided in an embodiment of the present application;

[0041] Fig. 3 is an enlarged view of a portion A in Fig. 2;

[0042] Fig. 4 is a schematic diagram of a connection relationship among a core making mold, a first bearing table and a first clamping device provided in an embodiment of the present application;

[0043] Fig. 5 is a schematic diagram of a connection relationship between a lifting device and a core box upper mold provided in an embodiment of the present application;

[0044] Fig. 6 is a schematic diagram of a connection relationship between a driving device and a support provided in an embodiment of the present application;

[0045] Fig. 7 is an enlarged view of a portion B in Fig. 6;

[0046] Fig. 8 is a schematic diagram of a connection relationship among a driving device, a support and a jacking device provided in an embodiment of the present application;

[0047] Fig. 9 is a structural schematic diagram of a pushing mechanism provided in an embodiment of the present application.

[0048] In the figure: 100, core making mold; 110, side mold; 120, core box upper mold; 121, supporting lug; 130, core box lower mold; 1, support; 11, first bearing table; 12, second bearing table; 2, first clamping device; 21, positioning mechanism; 22, clamping mechanism; 221, clamping cylinder; 222, clamping plate; 3, second clamping device; 4, driving device; 41, rotary motor; 42, rotary workbench; 43, supporting mechanism; 431, supporting seat; 432, guide piece; 433, elastic piece; 434, supporting rod; 4321, abutting portion; 4322, guide portion; 5, sand shooting device; 51, sand storage cylinder; 52, shooting head; 53, loosening mechanism; 531, pushing block; 5311, limiting portion; 532, driving piece; 54, pressing mechanism; 6, lifting device; 61, lifting piece; 62, clamping piece; 7, jacking device; 71, jacking mechanism; 72, pushing mechanism; 721, pushing rod; 722, guide rod; 723, resetting piece; 724, connecting plate; 8, air blowing device. DETAILED DESCRIPTION

[0049] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described accompanying drawings.

[0050] In this application, the terms "including", "containing", "having" or any other similar words are intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements does not only include those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0051] In this application, the term "and / or", is a description of the association relationship between the associated objects, which means that there can be three kinds of relationships. For example, a centrifugal vortex magnetic force pump and / or a centrifugal vortex magnetic force pump can represent three cases: only one centrifugal vortex magnetic force pump exists, both a centrifugal vortex magnetic force pump and a centrifugal vortex magnetic force pump exist, and only a centrifugal vortex magnetic force pump exists. In addition, the character " / " in this application generally represents a "and / or" relationship between the associated objects.

[0052] In this application, the terms "connected", "coupled", "engage", "mounting" can be direct connection, combination, coupling or mounting, but also indirect connection, combination, coupling or mounting. Among them, for example, direct connection refers to the connection of two parts or components without the need for an intermediate part, and indirect connection refers to the connection of two parts or components through at least one intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0053] In this application, the relative terms used in conjunction with quantities or conditions (for example, "about", "approximately", "substantially" and the like) include the values described and have the meaning indicated by the context. For example, the relative terms at least include the degree of error related to the measurement of a specific value, the tolerance caused by manufacturing, assembly, use, etc. related to a specific value. Such terms should also be considered to disclose the range defined by the absolute values of the two endpoints. The relative term can refer to the indicated value plus or minus a certain percentage (for example, 1%, 5%, 10% or more). The numerical value without the relative term should also be disclosed as a specific value with a tolerance. In addition, "substantially" when expressing the relative angular positional relationship (for example, substantially parallel, substantially perpendicular), it can refer to plus or minus a certain degree (for example, 1 degree, 5 degrees, 10 degrees or more) based on the indicated angle.

[0054] In this application, the functions performed by the components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by the parts can also be performed by one part, one component, or multiple parts in combination.

[0055] In this application, the terms "up", "down", "left", "right", "front", "back" and the like are described in the orientation and positional relationship shown in the drawings, and should not be understood as limiting the embodiments of the application. In addition, in the context, when referring to an element connected to another element "on" or "under", it can not only be directly connected to another element "on" or "under", but also indirectly connected to another element "on" or "under" through an intermediate element. The orientation of the upper side, the lower side, the left side, the right side, the front side, the back side and the like not only represents the positive direction, but also can be understood as the side direction. For example, the lower side can include the directly below, the left below, the right below, the front below and the back below, etc.

[0056] In order to improve the production efficiency of the core making machine, a double-station core making machine is provided in this embodiment. In the core making process, the core making and core taking in the whole cycle are alternately performed, so as to improve the production efficiency of the core making machine.

[0057] Referring to FIG. 1 to FIG. 9, the double-station core making machine comprises a support 1, a first clamping device 2, a second clamping device 3, a driving device 4, a sand shooting device 5 and a lifting device 6. The support 1 is provided with a first bearing table 11 and a second bearing table 12, which are configured to bear a core box lower die 130 of a core making mold 100. The first clamping device 2 is arranged on the first bearing table 11 and is configured to clamp a side die 110 of the core making mold 100 on the first bearing table 11. The second clamping device 3 is arranged on the second bearing table 12 and is configured to clamp the side die 110 of the core making mold 100 on the second bearing table 12. The driving end of the driving device 4 is connected with the support 1 and is configured to drive the support 1 to rotate. The sand shooting device 5 is arranged above one of the first bearing table 11 and the second bearing table 12. The sand shooting port of the sand shooting device 5 is arranged opposite to the sand inlet of the corresponding core making mold 100, and the sand shooting device 5 is configured to shoot sand into the forming cavity of the core making mold 100. The lifting device 6 is arranged above the other one of the first bearing table 11 and the second bearing table 12. The lifting end of the lifting device 6 is arranged opposite to the core box upper die 120 of the corresponding core making mold 100, and the lifting device 6 is configured to lift the core box upper die 120.

[0058] The core making mold 100 is arranged on the first bearing table 11. Then, under the action of the driving device 4, the first bearing table 11 is arranged opposite to the sand shooting device 5, and the side die 110 of the core making mold 100 is clamped by the first clamping device 2. Then, under the action of the sand shooting device 5, sand is shot into the forming cavity, and another core making mold 100 is placed on the second bearing table 12 and clamped by the second clamping device 3. After the sand shooting device 5 finishes shooting sand and the sand core is formed, under the action of the driving device 4, the first bearing table 11 is arranged opposite to the lifting device 6, and the second bearing table 12 is arranged opposite to the sand shooting device 5. Under the action of the lifting device 6, the core box upper die 120 can be taken out. During the whole process, the core making machine does not need to be stopped, so that the production efficiency of the sand core can be improved. The core making and core taking are alternately performed during the whole cycle, so that the production efficiency of the core making machine can be improved.

[0059] In the embodiment, the sand shooting device 5 comprises a sand storage cylinder 51, a shooting head 52 and a pressing mechanism 54. The sand storage cylinder 51 is in communication with the shooting head 52 to deliver core sand to the shooting head 52. The shooting head 52 is arranged at the pressing end of the pressing mechanism 54, and the pressing mechanism 54 is configured to push the shooting head 52 to apply a pressing force to the core box upper mold 120. Before sand shooting, the height of the sand storage cylinder 51 is lowered by the pressing mechanism 54, so that the shooting head 52 abuts against the top of the core box upper mold 120, and the sand shooting port is in communication with the sand inlet port. In addition, under the action of the first clamping device 2, the two side molds 110 of the core making mold 100 can be clamped, and under the action of the shooting head 52 and the first bearing table 11, the core box upper mold 120 can be clamped. In this way, the sand core is formed, so that the quality of the formed sand core is improved. In addition, the pressing mechanism 54 can be a linear driving component such as a pressing cylinder.

[0060] Exemplarily, the double-station core making machine further comprises a blowing device 8. The gas head of the blowing device 8 is arranged at the pressing end of the pressing mechanism 54. During the pressing process of the shooting head 52, the gas head can move downward with the shooting head 52. After the sand shooting of the shooting head 52 is completed, the blowing device 8 can blow and solidify the sand core in the core making mold 100 through the gas head, so as to further improve the core making efficiency of the core making machine.

[0061] After the sand core is formed, the connection between the core box upper mold 120 and the sand core is relatively tight. Therefore, when the core box upper mold 120 is extracted, it is not easy to separate the core box upper mold 120 from the sand core, or there is a possibility that part of the sand core remains on the core box upper mold 120, thereby affecting the quality of the sand core. Therefore, in the embodiment, after the sand core is formed, the loosening mechanism 53 in the sand shooting device 5 controls the rotation of the core box upper mold 120, so that the core box upper mold 120 and the sand core move relatively to each other, so as to facilitate the extraction of the core box upper mold 120.

[0062] Exemplarily, the loosening mechanism 53 is arranged at the shooting head 52, and the loosening end of the loosening mechanism 53 is connected with the core box upper mold 120. The loosening mechanism 53 is configured to drive the core box upper mold 120 to rotate in a predetermined direction. After the sand core is formed, the loosening mechanism 53 controls the movement of the core box upper mold 120, so that the core box upper mold 120 and the sand core move relatively to each other, and then a gap is generated between the core box upper mold 120 and the sand core, so as to facilitate subsequent demolding.

[0063] The shape of the core box upper mold 120 in this embodiment can be columnar or conical. Therefore, in this embodiment, the loosening mechanism 53 includes a push block 531 and a driving member 532. The push block 531 is arranged at the driving end of the driving member 532, and the push block 531 abuts against the supporting lug 121 arranged on the outer peripheral wall of the core box upper mold 120. The driving member 532 is arranged on the shot head 52, and the driving member 532 is configured to drive the push block 531 to rotate in a preset direction. After the sand core is formed, the push block 531 is driven to move by the driving member 532. Since the push block 531 abuts against the supporting lug 121, the push block 531 can push the core box upper mold 120 to move in the process of moving, so that the core box upper mold 120 can relatively move with the sand core.

[0064] To avoid damage to the sand core caused by the push block 531 in the process of moving, the push block 531 is provided with a limiting portion 5311 matched with the supporting lug 121. The driving end of the driving member 532 can reciprocate. Under the action of the driving member 532, the supporting lug 121 can reciprocate, so that a gap is gradually formed between the sand core and the core box upper mold 120, to facilitate subsequent extraction of the core box upper mold 120. The driving member 532 can be a reciprocating motor or a cylinder or other component with reciprocating movement function. In addition, the shape of the push block 531 can be inverted Y-shaped, and the bottom recess is provided with a limiting portion 5311 matched with the supporting lug 121. In the process of reciprocating movement, the push block 531 can drive the core box upper mold 120 to reciprocate under the action of the limiting portion 5311.

[0065] When the driving member 532 is a cylinder or other component with linear reciprocating movement, the loosening mechanism 53 is provided with a plurality of supporting lugs 121, which are uniformly distributed on the abutting frame around the circumference of the core box upper mold 120.

[0066] In this embodiment, the driving device 4 includes a rotary motor 41 and a rotary workbench 42. The rotary workbench 42 is arranged at the rotating end of the rotary motor 41, and the support frame 1 is arranged on the top of the rotary workbench 42. Since the push-down mechanism 54 abuts against the shot head 52 and the core box upper mold 120 in the process of pushing down, the abutting force can be applied to the first bearing table 11 or the second bearing table 12, so that the stress on both sides of the support frame 1 is unbalanced. Since the rotary workbench 42 cannot bear heavy pressure, the support frame 1 is easily unbalanced at both ends under the action of the push-down mechanism 54, that is, the connection between the rotary workbench 42 and the support frame 1 is easily deformed, which easily leads to overloading of the rotary motor 41 and damage. Increasing the load capacity of the rotary workbench 42 will greatly increase the production cost. Therefore, in this embodiment, the bearing capacity of the rotary workbench 42 is improved by the additional supporting mechanism 43.

[0067] Exemplarily, the driving device 4 further comprises a supporting mechanism 43 arranged between the rotating table 42 and the bracket 1 to support the bracket 1. In this way, the supporting mechanism 43 can increase the bearing capacity of the rotating table 42 under the action of the pressing mechanism 54 when the pressing mechanism 54 is pressed, thereby avoiding damage to the rotating table 42.

[0068] Exemplarily, the supporting mechanism 43 comprises a supporting seat 431, a plurality of guide members 432 and a plurality of elastic members 433. The supporting seat 431 is arranged on the rotating table 42, and the bracket 1 is arranged at the middle position of the top of the supporting seat 431, and the first bearing table 11 and the second bearing table 12 are arranged on both sides of the connecting position between the bracket 1 and the supporting seat 431. Any guide member 432 comprises an abutting portion 4321 and a guide portion 4322 arranged coaxially. The abutting portion 4321 abuts against the bottom of the bracket 1, and the plurality of guide portions 4322 are uniformly arranged at the edge positions of the supporting seat 431. The plurality of elastic members 433 are arranged corresponding to the plurality of guide members 432. Any elastic member 433 is arranged in compression between the supporting seat 431 and the corresponding abutting portion 4321 to have elastic potential energy after the bracket 1 is moved upward.

[0069] Under the action of the elastic member 433, the bracket 1 can be in a horizontal state when the pressing mechanism 54 is not pressed. When the pressing end of the pressing mechanism 54 is pressed, an abutting force can be applied to one side of the bracket 1. Under the action of the elastic member 433, the bracket 1 can be offset to play a buffering role, thereby avoiding damage to the rotating table 42.

[0070] Exemplarily, one end of the guide portion 4322 away from the abutting portion 4321 penetrates the supporting seat 431. The supporting mechanism 43 further comprises a plurality of supporting rods 434 arranged circumferentially on the rotating table 42, and the plurality of supporting rods 434 are arranged corresponding to the plurality of guide portions 4322. When the pressing end of the pressing mechanism 54 is pressed, the guide portion 4322 can abut against the supporting seat 431, thereby improving the bearing performance of the supporting seat 431.

[0071] The supporting seat 431 does not rotate with the rotation of the rotating table 42. Therefore, to avoid interference between the guide portion 4322 and the supporting seat 431 during rotation of the bracket 1, a gap is provided between the guide portion 4322 and the supporting seat 431.

[0072] In the embodiment, the first clamping device 2 and the second clamping device 3 have the same structure, and the first clamping device 2 is taken as an example for illustration. The first clamping device 2 comprises a positioning mechanism 21 and a clamping mechanism 22. One side mold 110 of the core making mold 100 is detachably arranged at a positioning end of the positioning mechanism 21, and the positioning mechanism 21 is configured to push the core making mold 100 towards the other side mold 110 of the core making mold 100 in a one-way manner. The other side mold 110 of the core making mold 100 is detachably arranged at a clamping end of the clamping mechanism 22, and the clamping end is configured to push the core making mold 100 towards the positioning end in a one-way manner. Under the action of the positioning mechanism 21 and the clamping mechanism 22, the two side molds 110 can be pushed to move relative to each other, so as to complete the assembly of the core making mold 100. In addition, the two side molds 110 of the core making mold 100 are detachably arranged at the clamping end and the positioning end, respectively, so as to replace different core making molds 100 according to different production needs.

[0073] The clamping mechanism 22 and the positioning mechanism 21 can have the same structure or different structures. When the structures of the clamping mechanism 22 and the positioning mechanism 21 are the same, the positioning mechanism 21 is fixed as a reference on the first bearing table 11 or the second bearing table 12, so as to facilitate the molding of the core sand.

[0074] For example, the clamping mechanism 22 comprises a clamping cylinder 221 and a clamping plate 222. The clamping plate 222 is arranged at the piston rod end of the clamping cylinder 221, and the side mold 110 is connected to the clamping plate 222 through a detachable connection structure such as a bolt.

[0075] In the embodiment, the lifting device 6 comprises a lifting member 61 and a clamping member 62. The clamping member 62 is arranged at the lifting end of the lifting member 61, and the lifting member 61 is configured to control the height of the clamping member 62. The clamping member 62 is configured to clamp the lug 121 on the outer peripheral wall of the core box upper mold 120. In actual application, after the core sand is molded, the molded core sand can be moved to a position opposite to the lifting device 6 under the action of the driving device 4. Then, the core box upper mold 120 can be separated from the core sand under the action of the lifting device 6, so as to complete the demolding. The lifting member 61 can be a lifting cylinder, and the clamping member 62 can be a finger clamping cylinder.

[0076] In order to facilitate the taking out of the molded core sand, the double-station core making machine further comprises a jacking device 7. The jacking device 7 is arranged on the support 1, and the jacking device 7 is arranged opposite to the lifting device 6, so as to lift the molded core sand to separate from the support 1.

[0077] Exemplarily, the jacking device 7 comprises a jacking mechanism 71 and two pushing mechanisms 72, the two pushing mechanisms 72 are respectively arranged at the first bearing table 11 and the second bearing table 12, and the two pushing mechanisms 72 are capable of abutting against the formed sand core; the jacking mechanism 71 is arranged adjacent to the driving device 4, and the jacking mechanism 71 is arranged opposite to the lifting device 6; the jacking mechanism 71 is configured to push the pushing mechanism 72 to move upward when one of the pushing mechanisms 72 moves above the jacking mechanism 71. In actual application, the two pushing mechanisms 72 rotate with the bracket 1, when the formed sand core rotates to the position arranged opposite to the lifting device 6, the jacking mechanism 71 jacks up, so as to push the pushing mechanism 72 to move upward, thereby facilitating the taking out of the sand core. The jacking mechanism 71 can be a hydraulic cylinder.

[0078] Exemplarily, the pushing mechanism 72 comprises a pushing rod 721, a connecting plate 724 and a reset member 723, the pushing rod 721 penetrates through the first bearing table 11 or the second bearing table 12, and the end of the pushing rod 721 abuts against the sand core; the connecting plate 724 is connected with the end of the pushing rod 721 away from the sand core; the reset member 723 is arranged between the connecting plate 724 and the first bearing table 11 or the second bearing table 12. The hydraulic cylinder rises, and the hydraulic cylinder abuts against the connecting plate 724, with the continuous rising of the hydraulic cylinder, the pushing rod 721 is pushed to rise, so as to jack up the sand core. After the sand core is taken down, the hydraulic cylinder returns to the original height, and the pushing rod 721 returns to the initial position under the action of the reset member 723.

[0079] The pushing mechanism 72 can further comprise a guide rod 722, so as to avoid the deviation of the pushing rod 721 in the rising process. Exemplarily, the guide rod 722 penetrates through the connecting plate 724 and the first bearing table 11 or the second bearing table 12 at the same time, and the two ends of the guide rod 722 are provided with protrusions, the diameters of the protrusions are greater than the diameter of the guide rod 722, so as to avoid the disengagement of the guide rod 722 from the connecting plate 724.

[0080] In summary, the working process of the core-making machine provided in the embodiment is as follows:

[0081] The core-making mold 100 arranged on the first bearing table 11 is defined as a first mold, and the core-making mold 100 arranged on the second bearing table 12 is defined as a second mold. The side mold 110 of the first mold is arranged on the first clamping device 2, and the upper mold of the first mold is arranged on the lifting device 6. The two side molds 110 are clamped tightly to the lower mold by the first clamping device 2, and the core box upper mold 120 is clamped to the lower mold by the lifting device 6. Under the action of the driving device 4, the first mold on which the mold is closed on the first bearing table 11 can be moved to a position opposite to the sand shooting device 5, and at the same time, the second mold on the second bearing table 12 is rotated to move out. Under the action of the sand shooting device 5 and the blowing device 8, sand can be shot into the forming cavity of the first mold, and the sand can be blown and solidified. At the same time, the second mold is opened under the action of the lifting device 6 and the second clamping device 3, and the sand core in the second mold is ejected by the jacking device 7. After the sand core is taken away, the second mold is closed again. At this time, after the sand core of the first mold is solidified and formed, the first bearing table 11 is arranged opposite to the lifting device 6 under the action of the driving device 4, and the second bearing table 12 is arranged opposite to the sand shooting device 5, the first mold is repeatedly opened, the core is taken out, and the mold is closed, and the second mold is shot, blown and solidified. The core-making, core-taking and core-making in the whole cycle are alternately carried out, so that the production efficiency of the core-making machine is improved.

Claims

1. A dual-station core-making machine, comprising: A support (1) is provided with a first support platform (11) and a second support platform (12), the first support platform (11) and the second support platform (12) being configured to support the lower mold (130) of the core box of the core mold (100); A first clamping device (2) is disposed on the first support platform (11) and is configured to clamp the side mold (110) of the core-making mold (100) on the first support platform (11). The second clamping device (3) is disposed on the second support platform (12) and is configured to clamp the side mold (110) of the core-making mold (100) on the second support platform (12); A drive device (4) is connected to the support (1) at its drive end and is configured to drive the support (1) to rotate. A sand-shooting device (5) is disposed above one of the first support platform (11) and the second support platform (12). The sand-shooting port of the sand-shooting device (5) is disposed opposite to the sand inlet of the core-making mold (100) corresponding to the sand-shooting port. The sand-shooting device (5) is configured to shoot sand into the molding cavity of the core-making mold (100). A lifting device (6) is disposed above the other of the first support platform (11) and the second support platform (12). The lifting end of the lifting device (6) is disposed opposite to the upper mold (120) of the core box of the core mold (100) corresponding to the lifting end, and the lifting device (6) is configured to lift the upper mold (120) of the core box.

2. The dual-station core-making machine according to claim 1, wherein, The sand-shooting device (5) includes a sand storage cylinder (51), a shot head (52), and a pressing mechanism (54). The sand storage cylinder (51) is connected to the shot head (52) to deliver core sand to the shot head (52). The shot head (52) is located at the pressing end of the pressing mechanism (54). The pressing mechanism (54) is configured to push against the shot head (52) to apply downward pressure to the upper mold (120) of the core box.

3. The dual-station core-making machine according to claim 2, wherein, The sand-shooting device (5) further includes a loosening mechanism (53), which is disposed on the shooting head (52), and the loosening end of the loosening mechanism (53) is connected to the upper mold of the core box (120), and the loosening mechanism (53) is configured to drive the upper mold of the core box (120) to rotate in a preset direction.

4. The dual-station core-making machine according to claim 3, wherein, The loosening mechanism (53) includes a lever (531) and a drive member (532). The lever (531) is disposed at the drive end of the drive member (532), and the lever (531) abuts against a lug (121) disposed on the outer peripheral wall of the upper mold (120) of the core box. The drive member (532) is disposed on the nozzle (52), and the drive member (532) is configured to drive the lever (531) to move along the preset direction.

5. The dual-station core-making machine according to claim 4, wherein, The lever (531) is provided with a limiting part (5311) that is adapted to the support lug (121); The driving end of the driving element (532) can reciprocate.

6. The dual-station core-making machine according to claim 1, wherein, The driving device (4) includes: Rotary electric motor (41); A rotary worktable (42) is disposed at the rotating end of the rotary motor (41); A support mechanism (43) is disposed between the rotary table (42) and the bracket (1) to support the bracket (1).

7. The dual-station core-making machine according to claim 6, wherein, The support mechanism (43) includes: A support base (431) is disposed on the rotary table (42), and the bracket (1) is disposed at the middle position of the top of the support base (431); Multiple guide members (432), each guide member (432) includes a coaxially arranged abutment part (4321) and a guide part (4322), the abutment part (4321) abuts against the bottom of the bracket (1), and the multiple guide parts (4322) are slidably evenly distributed at the edge position of the support base (431); Multiple elastic elements (433) are provided corresponding to the multiple guide elements (432). Each elastic element (433) is compressed between the support base (431) and the corresponding abutment part (4321) to have elastic potential energy to recover deformation after the bracket (1) moves upward.

8. The dual-station core-making machine according to claim 7, wherein, The end of the guide portion (4322) away from the abutment portion (4321) passes through the support base (431); The support mechanism (43) further includes a plurality of support rods (434), which are arranged in the circumference of the rotary table (42), and the plurality of support rods (434) are arranged in a one-to-one correspondence with the plurality of guide parts (4322).

9. The dual-station core-making machine according to claim 1, wherein, The first clamping device (2) includes: The positioning mechanism (21) is provided with one of the side molds (110) of the core mold (100) being detachably disposed at the positioning end of the positioning mechanism (21), and the positioning mechanism (21) is configured to push the core mold (100) in one direction toward the other side mold (110) of the core mold (100); The clamping mechanism (22) has another side mold (110) of the core-making mold (100) detachably disposed at the clamping end of the clamping mechanism (22), and the clamping end is configured to unidirectionally push the core-making mold (100) toward the positioning end.

10. The dual-station core-making machine according to claim 1, wherein, The lifting device (6) includes a lifting member (61) and a clamping member (62). The clamping member (62) is disposed at the lifting end of the lifting member (61), and the lifting member (61) is configured to control the height of the clamping member (62). The clamping member (62) is configured to clamp the lug (121) on the outer peripheral wall of the upper mold (120) of the core box.

11. The dual-station core-making machine according to claim 1, wherein, The dual-station core-making machine also includes a lifting device (7), which is disposed on the support (1) and is disposed opposite to the lifting device (6) to lift the formed sand core to detach it from the support (1).

12. The dual-station core-making machine according to claim 11, wherein, The lifting device (7) includes: Two pushing mechanisms (72) are respectively located on the first support platform (11) and the second support platform (12), and the two pushing mechanisms (72) can abut against the formed sand core; A lifting mechanism (71) is disposed adjacent to the drive device (4) and is disposed opposite to the lifting device (6); the lifting mechanism (71) is configured to push one of the pushing mechanisms (72) upward in response to one of the pushing mechanisms (72) moving above the lifting mechanism (71).

13. The dual-station core-making machine according to claim 12, wherein, The pushing mechanism (72) includes: A push rod (721) passes through the first support platform (11) or the second support platform (12), and the end of the push rod (721) abuts against the sand core; A connecting plate (724) is connected to the end of the push rod (721) away from the sand core; A reset member (723) is disposed between the connecting plate (724) and the first support platform (11) or the second support platform (12).

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