A molding machine casting apparatus for manufacturing sand molds

Abstract

The application relates to the technical field of casting equipment, and discloses a molding machine casting equipment for manufacturing sand molds, which comprises a molding machine body, a workbench arranged at the middle part of the molding machine body, a sand box arranged at the bottom of the molding machine body, a dredging mechanism arranged at the bottom of the workbench, and a deflection mechanism arranged in the dredging mechanism and used for controlling the deflection direction of sand shooting; the dredging mechanism comprises a support arranged at the bottom of the workbench, the support provides support for a moving part, a slide channel arranged at the top edge of the support, the slide channel can accommodate a rotating part, a stepped hole arranged at the bottom of the support, a limiting ring arranged at the middle part of the stepped hole, the limiting ring is located at the position where the diameter of the stepped hole changes, and a rotating drum arranged in the stepped hole, the rotating drum can rotate after being subjected to force. Through the arrangement of the dredging mechanism, the blockage cleaning work is simplified, the sand shooting port can be subjected to targeted dredging treatment without disassembling the equipment, and the sand shooting process is more efficient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of casting equipment, in particular to a molding machine casting equipment for manufacturing sand molds. BACKGROUND

[0002] The molding machine is the core equipment of the foundry industry, mainly used for manufacturing sand molds or metal mold cavities. It efficiently and accurately completes the processes of sand filling, compaction, and mold lifting, greatly improving production efficiency, reducing labor costs, and improving the working environment. Compared with manual molding, the molding machine significantly improves the dimensional accuracy and surface quality of the castings, ensuring the stability of product quality. Whether it is mass production or the manufacture of high-precision complex parts, the molding machine is crucial, is the key to realizing the scale, standardization, and high-quality production of modern foundry industry, and strongly supports the demand for castings in various industries.

[0003] Traditional molding machines are widely used in the foundry industry, but due to their structure and working principle, there are some problems that cannot be ignored. The traditional molding machine has significant drawbacks in the sand injection process. The sand injection port is often designed simply, and during long-term use, due to factors such as sand particle size, impurities, or humidity changes, it is very easy to block. Once blocked, cleaning and dredging is extremely inconvenient, usually requiring downtime, consuming a lot of time and labor to disassemble and clean, severely affecting production efficiency and continuity. In addition, traditional molding machines generally lack the ability to control the direction of sand injection during sand injection. The sand injection often shows a single or uncontrollable bias, which leads to uneven distribution of sand in the mold cavity and difficulty in ensuring compaction. This limitation makes it difficult for traditional equipment to adapt to the molding needs of workpieces of different shapes and complex structures, and it is unable to accurately and uniformly fill sand according to the specific parts of different workpieces, limiting its application in the production of complex and precise castings, and affecting the quality and consistency of the final castings. SUMMARY

[0004] In view of the problems of inconvenient dredging of the sand injection port and inability to adjust the direction of sand injection in the prior art, a molding machine casting equipment for manufacturing sand molds is proposed.

[0005] The purpose is to make the molding machine have the function of conveniently dredging the sand injection port and adjust the deflection direction of sand injection.

[0006] The technical scheme of the present application is a molding machine casting equipment for manufacturing sand molds, comprising a molding machine main body, a workbench arranged in the middle of the molding machine main body, a sand box arranged at the bottom of the molding machine main body, a dredging mechanism arranged at the bottom of the workbench, and a deflection mechanism arranged inside the dredging mechanism for controlling the deflection direction of sand injection.

[0007] The dredging mechanism comprises a support arranged at the bottom of the workbench, the support providing support for a moving part, a slide channel arranged at the top edge of the support, the slide channel being capable of accommodating a rotating part, a stepped hole arranged at the bottom of the support, a limiting ring arranged at the middle of the stepped hole, the limiting ring being located at the position where the diameter of the stepped hole changes, a rotating drum arranged inside the stepped hole, the rotating drum being capable of rotating under force, a ring plate arranged at the bottom end of the rotating drum, a tension spring arranged at the bottom of the ring plate, a sliding ring arranged at the bottom of the tension spring, the tension spring connecting the sliding ring and the ring plate, the outer side of the sliding ring being rotationally connected with the slide channel, a lifting pipe arranged inside the rotating drum, the lifting pipe being capable of lifting along with the rotating drum, a scraper arranged at the top end of the lifting pipe, the scraper being capable of cleaning the inner wall of the rotating drum, and a driving unit arranged at the middle of the rotating drum for driving the rotating drum to rotate.

[0008] Further, the bottom end of the rotating drum is tooth-shaped, and the tooth-shaped outer shape matches the inner ring of the limiting ring.

[0009] Further, symmetrical sliding grooves are arranged at the two sides of the lifting pipe, and symmetrical sliding blocks are arranged at the two sides of the bottom of the stepped hole, and the sliding blocks are slidingly connected with the sliding grooves.

[0010] Further, the driving unit comprises a driven wheel arranged at the middle of the rotating drum, a support plate arranged at the bottom of the workbench, a shaft sleeve arranged at the bottom of the support plate, a return spring arranged inside the support plate, a bolt arranged at the bottom of the return spring, a shaft hole arranged at the side of the shaft sleeve close to the support plate, a pressing block arranged at the inner wall of the shaft hole, a knob arranged at the bottom of the pressing block, a horizontal shaft arranged inside the shaft hole, and a rack arranged at the end of the horizontal shaft close to the driven wheel.

[0011] Further, the top of the shaft sleeve is provided with an insertion hole, and the side of the shaft sleeve close to the driven wheel is also provided with an insertion hole.

[0012] Further, the bottom of the shaft sleeve is provided with a screw hole, the middle of the knob is provided with a thread, and the knob is threadedly connected with the shaft sleeve.

[0013] Further, the deflection mechanism comprises a guide plate arranged at the top of the scraper, a rotating shaft arranged at the inner wall of the scraper, a driving wheel arranged at the bottom of the rotating shaft, a rubber ring arranged at the bottom of the scraper, and a tooth ring arranged at the top inner wall of the lifting pipe, the tooth ring being meshingly connected with the driving wheel.

[0014] Further, the top of the scraper is provided with a through hole, and the rotating shaft is rotationally connected with the through hole.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] 1. By setting the dredging mechanism, the blockage cleaning work originally requiring a long time and more effort can be simplified, and the operator can perform targeted dredging treatment on the sand shooting port without disassembling the equipment, which makes the dredging process more efficient, reduces the downtime caused by blockage, and ensures that the molding machine can run continuously and stably. With the dredging mechanism, the maintenance of the molding machine becomes easier, and the difficulty of dredging work is reduced, which not only improves the production efficiency, but also reduces the production loss caused by downtime, so that the molding machine can better play its role in actual production and meet the needs of continuous production.

[0017] 2. By setting the driving unit, when the sand shooting port is blocked and needs to be dredged, the operator only needs to push and pull the horizontal shaft, which can drive the dredging mechanism to work and process the blocked sand shooting port. Without complicated steps and complex control devices, the operation difficulty is reduced, and the operator can quickly and accurately complete the dredging task through the intuitive way of pushing and pulling the horizontal shaft. This design avoids the complex operation that may occur in traditional dredging methods and reduces the possibility of operation errors, thereby improving the efficiency of dredging work and enabling the molding machine to recover normal operation faster.

[0018] 3. By setting the deflection mechanism, when filling sand for workpieces of different shapes and structures, the deflection mechanism can work, and the operator can adjust the sand shooting direction according to the specific shape of the workpiece and the filling position requirements. Through the action of the deflection mechanism, the sand can be guided to a specific direction in the cavity, ensuring that the sand can be uniformly and fully filled into every corner of the workpiece. This flexible control of the sand shooting direction enables the molding machine to better adapt to diversified production tasks, whether it is a simple standard part or a complex special-shaped part, the sand filling requirements can be met, thereby improving the quality and consistency of the castings and expanding the application range of the molding machine in different casting production scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0020] Figure 2 It is a schematic diagram of the connection between the workbench and the molding machine body of the present application;

[0021] Figure 3 It is a schematic diagram of the connection between the bracket and the workbench of the present application;

[0022] Figure 4 It is a schematic diagram of the overall structure of the dredging mechanism of the present application;

[0023] Figure 5 It is a schematic diagram of the connection between the bracket and the rotating drum of the present application;

[0024] Figure 6 The schematic diagram of the internal structure of the support of the present application;

[0025] Figure 7 The schematic diagram of the connection between the scraper and the lifting pipe of the present application;

[0026] Figure 8 The schematic diagram of the structure of the rack and the cross shaft of the present application;

[0027] Figure 9 The schematic diagram of the connection between the support plate and the shaft sleeve of the present application;

[0028] Figure 10 The schematic diagram of the internal structure of the shaft sleeve of the present application;

[0029] Figure 11 The schematic diagram of the connection between the driving wheel and the tooth ring of the present application;

[0030] Figure 12 The schematic diagram of the connection between the lifting pipe and the tooth ring of the present application;

[0031] Figure 13 The schematic diagram of the structure of the rotating shaft and the driving wheel of the present application;

[0032] Figure 14 The schematic diagram of the connection between the rack and the driven wheel of the present application.

[0033] In the figure:

[0034] 1, the main body of the molding machine; 2, the workbench; 3, the sand box; 4, the dredging mechanism; 5, the deflection mechanism; 41, the support; 42, the slide; 43, the stepped hole; 44, the limiting ring; 45, the rotating drum; 46, the ring plate; 47, the tension spring; 48, the slip ring; 49, the lifting pipe; 410, the scraper; 411, the driven wheel; 412, the support plate; 413, the shaft sleeve; 414, the reset spring; 415, the bolt; 416, the shaft hole; 417, the pressing block; 418, the knob; 419, the cross shaft; 420, the rack; 51, the guide plate; 52, the rotating shaft; 53, the driving wheel; 54, the rubber ring; 55, the tooth ring. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0036] Example 1, refer to Figures 1-10For the first embodiment of the present application, a molding machine casting device for manufacturing sand mold is provided, comprising a molding machine body 1, a workbench 2 fixedly connected to the middle part of the molding machine body 1, a sand box 3 fixedly connected to the bottom of the molding machine body 1, further comprising a dredging mechanism 4 installed at the bottom of the workbench 2, and a deflection mechanism 5 installed inside the dredging mechanism 4 for controlling the deflection direction of the sand shooting; the dredging mechanism 4 comprises a support 41 fixedly connected to the bottom of the workbench 2, the support 41 provides support for the moving parts, a slide 42 opened at the top edge of the support 41, the slide 42 can accommodate rotating parts, a stepped hole 43 opened at the bottom of the support 41, a limiting ring 44 fixedly connected to the middle part of the stepped hole 43, the limiting ring 44 is located at the position where the stepped hole 43 changes in diameter, a rotating drum 45 rotatably connected inside the stepped hole 43, the rotating drum 45 can rotate under stress, a ring plate 46 fixedly connected to the bottom end of the rotating drum 45, a tension spring 47 fixedly connected to the bottom of the ring plate 46, a sliding ring 48 fixedly connected to the bottom of the tension spring 47, the tension spring 47 connects the sliding ring 48 and the ring plate 46, the outer side of the sliding ring 48 is rotatably connected with the slide 42, a lifting pipe 49 rotatably connected inside the rotating drum 45, the lifting pipe 49 can rise and fall with the rotating drum 45, a scraper 410 fixedly connected to the top end of the lifting pipe 49, the scraper 410 can clean the inner wall of the rotating drum 45, and a driving unit assembled in the middle part of the rotating drum 45 for driving the rotating drum 45 to rotate.

[0037] Specifically, the support 41 is connected with the workbench 2, other moving parts are supported, the slide 42 can accommodate the sliding ring 48 and the tension spring 47 inside, and the sliding ring 48 has the freedom to rotate, the stepped hole 43 accommodates the rotating drum 45 and the lifting pipe 49, the limiting ring 44 cooperates with the bottom of the rotating drum 45 to constrain the rotating drum 45, so that it loses the freedom to rotate, the tension spring 47 pulls the rotating drum 45 downward through the ring plate 46, so that the bottom of the rotating drum 45 remains in cooperation with the limiting ring 44, the sliding ring 48 is constrained by the slide 42, so it can only rotate in place, the lifting pipe 49 can only move up and down under the constraint of the support 41, when the rotating drum 45 moves up, it will move the lifting pipe 49 at the same time, when the scraper 410 and the rotating drum 45 rotate relative to each other, the edge of the scraper 410 will scrape off the attachments on the inner wall of the rotating drum 45, and the sand box 3 is used to store sand shooting raw materials for manufacturing sand mold.

[0038] Referring to Figure 6 and Figure 7 , the bottom end of the rotating drum 45 is toothed, and the toothed shape matches the inner ring of the limiting ring 44, and the bottom of the scraper 410 is provided with a positioning ring.

[0039] Specifically, the bottom of the rotating drum 45 can be inserted into the inside of the limiting ring 44, and the rotating drum 45 in the state of being inserted into the limiting ring 44 will only have the freedom to move up and down.

[0040] Referring toFigure 6 and Figure 7 The two sides of the lifting pipe 49 are symmetrically provided with sliding grooves, and the two sides of the bottom of the stepped hole 43 are symmetrically provided with sliding blocks, and the sliding blocks are in sliding connection with the sliding grooves.

[0041] Specifically, the bracket 41 restricts the lifting pipe 49 through the sliding grooves and the sliding blocks, so that the lifting pipe 49 can only move up and down.

[0042] Referring to Figures 1-10 The driving unit comprises a driven wheel 411 fixedly connected to the middle part of the rotating drum 45, a support plate 412 fixedly connected to the bottom of the workbench 2, a shaft sleeve 413 rotatably connected to the bottom of the support plate 412, a reset spring 414 fixedly connected to the inside of the support plate 412, a plug 415 fixedly connected to the bottom of the reset spring 414, a shaft hole 416 formed in the side of the shaft sleeve 413 close to the support plate 412, a pressing block 417 in sliding connection with the inner wall of the shaft hole 416, a knob 418 rotatably connected to the bottom of the pressing block 417, a horizontal shaft 419 in sliding connection with the inside of the shaft hole 416, and a rack 420 fixedly connected to the end of the horizontal shaft 419 close to the driven wheel 411.

[0043] Specifically, the support plate 412 is connected with the workbench 2, the shaft sleeve 413 provides a fixed point, the reset spring 414 makes the plug 415 keep a downward moving trend, when the plug 415 is inserted into the plug hole of the shaft sleeve 413, the shaft sleeve 413 will be locked and cannot rotate, the shaft hole 416 can accommodate the pressing block 417 and the horizontal shaft 419, the pressing block 417 can be lifted by rotating the knob 418, after the pressing block 417 closely fits with the horizontal shaft 419 upward, the horizontal shaft 419 cannot move, the horizontal shaft 419 can move along the shaft hole 416, the shaft sleeve 413 can drive the horizontal shaft 419 to rotate by rotating, the horizontal shaft 419 drives the rack 420 to rotate, during the process that the toothed side of the rack 420 is upward, the driven wheel 411 will be lifted, and then the rotating drum 45 will rise, after the rotating drum 45 is disengaged from the limiting ring 44, the rotating drum 45 obtains the freedom of rotation, after the toothed side of the rack 420 is upward, the rack 420 will engage with the driven wheel 411, at this time, the horizontal shaft 419 is pushed and pulled, the rotating drum 45 can be driven to rotate through the rack 420 and the driven wheel 411.

[0044] Referring to Figure 4 and Figure 9 The top of the shaft sleeve 413 is provided with a plug hole, and the side of the shaft sleeve 413 close to the driven wheel 411 is also provided with a plug hole.

[0045] Specifically, the shaft sleeve 413 cooperates with the plug 415 through different plug slots, so that the shaft sleeve 413 and the rack 420 keep different rotation angles, when the toothed surface of the rack 420 is upward, the rack 420 engages with the driven wheel 411, when the toothed surface of the rack 420 is toward the rotating drum 45, the rack 420 is disengaged from the driven wheel 411.

[0046] With reference to Figure 10 The bottom of the shaft sleeve 413 is provided with a threaded hole, and the middle of the knob 418 is provided with a thread, and the knob 418 is threadedly connected with the shaft sleeve 413.

[0047] Specifically, the knob 418 rotates and moves along the axis of the knob 418 under the action of the thread, and drives the pressing block 417 to move at the same time.

[0048] Embodiment 2, with reference to Figures 1-14 The second embodiment of the present application is different from the first embodiment in that the deflection mechanism 5 comprises a guide plate 51 fixedly connected to the top of the scraper 410, a rotating shaft 52 rotatably connected to the inner wall of the scraper 410, a driving wheel 53 fixedly connected to the bottom of the rotating shaft 52, a rubber ring 54 fixedly connected to the bottom of the scraper 410, and a tooth ring 55 fixedly connected to the inner wall of the top of the lifting pipe 49, and the tooth ring 55 is in meshing connection with the driving wheel 53.

[0049] Specifically, the guide plate 51 can guide the sand sprayed from below to deflect the direction of the sand, the rotating shaft 52 rotates to drive the driving wheel 53 to rotate at the same time, the driving wheel 53 rotates around the inner circle of the tooth ring 55 due to the meshing with the tooth ring 55, and the scraper 410 moves and rotates at the same time, the rubber ring 54 can prevent foreign matter from entering the connection between the tooth ring 55 and the driving wheel 53, and increase the friction between the scraper 410 and the lifting pipe 49.

[0050] With reference to Figures 7-11 The top of the scraper 410 is provided with a through hole, and the rotating shaft 52 is rotatably connected with the through hole.

[0051] Specifically, the scraper 410 is connected with the rotating shaft 52 through the through hole, the rotating shaft 52 can transmit force to the scraper 410, and the remaining structure is the same as that of the first embodiment.

[0052] The working principle of the present application is as follows: when the rotating drum 45 is blocked, the pin 415 is released from the constraint of the shaft sleeve 413, and then the shaft sleeve 413 is rotated to drive the rack 420 to rotate, so that the toothed side of the rack 420 is turned towards the driven wheel 411, until the toothed side is upward, in the process, the bottom of the rack 420 will contact the driven wheel 411 and make it rise, and finally engage with the driven wheel 411, the driven wheel 411 drives the rotating drum 45 to move upwards and disengage from the limiting ring 44, at this time, the knob 418 is rotated to move away from the horizontal shaft 419, releasing the constraint of the horizontal shaft 419, then the horizontal shaft 419 is pushed and pulled to make the rack 420 reciprocate, while the rack 420 drives the rotating drum 45 to rotate through the driven wheel 411, at this time, the inner wall of the rotating drum 45 and the scraper 410 rotate relatively, so that the foreign matter attached to the inner wall of the rotating drum 45 causing the blockage will be scraped off by the scraper 410, after the unblocking is completed, the shaft sleeve 413 is rotated in the opposite direction to disengage the rack 420 from the driven wheel 411, and the pin 415 is used to fix the shaft sleeve 413, then the knob 418 is rotated to push the pressing block 417, so that the pressing block 417 fixes the horizontal shaft 419, after the rotating drum 45 loses the support of the rack 420, it will move downward under the action of the tension spring 47 until it cooperates with the limiting ring 44 to be fixed, when the deflection direction of the sand blasting needs to be adjusted, the rotating shaft 52 is rotated to drive the driving wheel 53 to rotate, the driving wheel 53 will revolve around the sun gear 55 while rotating around its own axis under the meshing action of the sun gear 55, and the driving wheel 53 will drive the scraper 410 to rotate through the rotating shaft 52, the scraper 410 rotates while driving the guide plate 51 to rotate, after the guide plate 51 rotates, it will guide the sand blasting direction to different directions.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit it, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A molding machine casting equipment for manufacturing sand molds, comprising a molding machine body (1), a worktable (2) disposed in the middle of the molding machine body (1), and a sand box (3) disposed at the bottom of the molding machine body (1), characterized in that: It also includes a dredging mechanism (4) located at the bottom of the workbench (2), and a deflection mechanism (5) located inside the dredging mechanism (4) for controlling the direction of sand-shooting deflection; the dredging mechanism (4) includes a support (41) located at the bottom of the workbench (2), the support (41) providing support for the moving parts, a slide (42) opened at the top edge of the support (41), the slide (42) accommodating the rotating parts, a stepped hole (43) opened at the bottom of the support (41), a limiting ring (44) located in the middle of the stepped hole (43), the limiting ring (44) being at the position where the stepped hole (43) changes diameter, and a rotating cylinder (45) located inside the stepped hole (43). The rotating drum (45) is able to rotate under force. It has a ring plate (46) near the bottom of the rotating drum (45), a tension spring (47) at the bottom of the ring plate (46), a slip ring (48) at the bottom of the tension spring (47), the tension spring (47) connecting the slip ring (48) and the ring plate (46), the outer side of the slip ring (48) being rotatably connected to the slide rail (42), a lifting tube (49) inside the rotating drum (45) that can rise and fall with the rotating drum (45), a scraper (410) at the top of the lifting tube (49) that can clean the inner wall of the rotating drum (45), and a drive unit in the middle of the rotating drum (45) for driving the rotating drum (45) to rotate. The drive unit includes a driven wheel (411) disposed in the middle of the rotating drum (45), a support plate (412) disposed at the bottom of the worktable (2), a bushing (413) disposed at the bottom of the support plate (412), a return spring (414) disposed inside the support plate (412), a pin (415) disposed at the bottom of the return spring (414), a shaft hole (416) opened on the side of the bushing (413) near the support plate (412), a pressure block (417) disposed on the inner wall of the shaft hole (416), a knob (418) disposed at the bottom of the pressure block (417), a horizontal shaft (419) disposed inside the shaft hole (416), and a rack (420) disposed on the end of the horizontal shaft (419) near the driven wheel (411). The deflection mechanism (5) includes a guide plate (51) disposed on the top of the scraper (410), a rotating shaft (52) disposed on the inner wall of the scraper (410), a drive wheel (53) disposed on the bottom of the rotating shaft (52), a rubber ring (54) disposed on the bottom of the scraper (410), and a toothed ring (55) disposed on the inner wall of the top of the lifting tube (49). The toothed ring (55) is engaged with the drive wheel (53).

2. The molding machine casting equipment for manufacturing sand molds according to claim 1, characterized in that: The bottom end of the rotating drum (45) is toothed, and the toothed shape matches the inner ring of the limiting ring (44). A positioning ring is provided at the bottom of the scraper (410).

3. The molding machine casting equipment for manufacturing sand molds according to claim 1, characterized in that: The lifting tube (49) has symmetrical grooves on both sides, and the bottom of the stepped hole (43) has symmetrical sliders on both sides, and the sliders are slidably connected to the grooves.

4. The molding machine casting equipment for manufacturing sand molds according to claim 1, characterized in that: The top of the bushing (413) is provided with an insertion hole, and the side of the bushing (413) near the driven wheel (411) is also provided with an insertion hole.

5. The molding machine casting equipment for manufacturing sand molds according to claim 1, characterized in that: The bottom of the bushing (413) is provided with a screw hole, and the middle of the knob (418) is provided with a thread, and the knob (418) is threadedly connected to the bushing (413).

6. The molding machine casting equipment for manufacturing sand molds according to claim 1, characterized in that: The top of the scraper (410) is provided with a through hole, and the rotating shaft (52) is rotatably connected to the through hole.

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