Tilting sand mixing device and sand core production line

Abstract

Provided are a tilting sand mixing device and a sand core production line. The tilting sand mixing device comprises a fixed base (100), an external drum mount (200), a sand mixing drum (300), a sand mixing assembly (400), a mount tilting assembly (500), and a sand drum rotating assembly (600); the external drum mount (200) is mounted on the fixed base (100) by means of the mount tilting assembly (500), such that the external drum mount (200) can tilt relative to the fixed base (100); the sand mixing drum (300) is rotatably mounted in the external drum mount (200), the sand drum rotating assembly (600) is arranged on the external drum mount (200), and the sand drum rotating assembly (600) can drive the sand mixing drum (300) to rotate; and the sand mixing assembly (400) is mounted on the external drum mount (200), and sand mixing blades (410) of the sand mixing assembly (400) are located in the sand mixing drum (300). The sand core production line comprises the tilting sand mixing device. The technical effect of improving the working efficiency is achieved.

Description

Flip sand mixing equipment and sand core production line

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to the Chinese patent application with application number 2024101613656 filed with the China Patent Office on February 5, 2024, entitled “Turning-type sand mixing equipment and sand core production line”. Technical Field

[0003] The present disclosure relates to the technical field of core making equipment, and in particular to a turnover type sand mixing equipment and a sand core production line. Background Art

[0004] Sand mixing is an important part of the casting process. Whether the sand and binder are mixed evenly directly affects the quality of the sand core, as well as the density, density uniformity and strength of the sand core.

[0005] With the rapid development of industrial automation, the traditional manual sand mixing method can no longer meet the needs of production and use, and is gradually being replaced by automated sand mixers. However, most sand mixers at this stage are vertical, which have shortcomings such as sand easily sticking to the inner wall of the sand mixing drum and cumbersome equipment cleaning.

[0006] Specifically, the mixing drum in most current sand mixers is fixed vertically. When mixing large quantities of sand, the heavy weight makes it difficult for the mixing blades to rotate, resulting in low mixing efficiency and production efficiency. Furthermore, most existing sand mixers use bottom-mounted mixing blades to mix the poured sand and binder. Because the bottom blades are fixed, the mixing method is limited, making it difficult to evenly mix sand close to the inner wall of the mixing drum, resulting in low production efficiency.

[0007] Summary of the Invention

[0008] The present disclosure provides a turnover type sand mixing device and a sand core production line to alleviate the technical problem of low production efficiency in the prior art.

[0009] The embodiments of the present disclosure may be implemented as follows:

[0010] The embodiment of the present disclosure provides a flip-type sand mixing device, comprising a fixed base, an outer support, a sand mixing barrel, a sand mixing assembly, a support flip assembly, and a sand barrel rotating assembly;

[0011] The outer cylinder bracket is mounted on the fixed base through the bracket flip assembly so that the outer cylinder bracket can rotate relative to the fixed base;

[0012] The sand mixing drum is rotatably mounted in the drum outer bracket, the sand drum rotating assembly is arranged on the drum outer bracket, and the sand drum rotating assembly can drive the sand mixing drum to rotate;

[0013] The sand mixing assembly is mounted on the outer support of the cylinder, and the sand mixing blades of the sand mixing assembly are located in the sand mixing cylinder.

[0014] Optionally, the bracket flip assembly includes a first power source, a worm and a worm gear;

[0015] The outer tube bracket is pivotally connected to the fixed base, the worm gear is fixedly arranged on the pivot point between the outer tube bracket and the fixed base, the first power source is fixedly arranged on the fixed base, and the first power source is connected to the worm gear through the worm.

[0016] Optionally, the fixed base is provided with a mounting seat configured to carry the first power source.

[0017] Optionally, the sand drum rotating assembly includes a second power source, a transmission gear and a transmission ring gear;

[0018] The second power source is arranged on the outer bracket of the drum, the transmission gear ring is fixedly sleeved on the outer wall of the sand mixing drum, and the second power source is transmission-connected to the transmission gear ring through the transmission gear.

[0019] In combination with the first aspect, the present disclosure provides a possible implementation of the first aspect, wherein the outer ring of the sand mixing drum is provided with a support roller, and the drum outer bracket is provided with a support configured to mount the support roller;

[0020] A support bearing is provided between the bottom of the sand mixing drum and the outer bracket of the drum.

[0021] Optionally, the sand mixing assembly includes a mounting support rod, an execution housing, an L-shaped execution rod, a third power source and the sand mixing blades;

[0022] The mounting support rod is mounted on the outer bracket of the cylinder, the actuator housing is rotatably arranged on the mounting support rod, and one end of the L-shaped actuator rod is mounted in the actuator housing;

[0023] The third power source is installed at the other end of the L-shaped actuator rod, and the sand mixing blade is installed on the third power source.

[0024] Optionally, the mounting support rod adopts a first telescopic push rod.

[0025] Optionally, a fixed gear ring is provided at one end of the first telescopic push rod connected to the actuator housing, and the actuator housing is rotatably provided on the first telescopic push rod;

[0026] A fourth power source is provided in the execution housing. The fourth power source is connected to a swing transmission tooth. The swing transmission tooth is engaged with the fixed gear ring.

[0027] Optionally, a second telescopic push rod configured to push the L-shaped actuator rod is provided in the above-mentioned actuator housing, and an adapter plate is provided at the protruding end of the second telescopic push rod, and one end of the L-shaped actuator rod is connected to the adapter plate.

[0028] An embodiment of the present disclosure further provides a sand core production line, comprising the turnover type sand mixing device.

[0029] Compared with the existing technology, the advantages of the embodiments of the present disclosure include, for example:

[0030] The present disclosure provides a turnover type sand mixing device, comprising a fixed base, an outer barrel bracket, a sand mixing barrel, a sand mixing assembly, a bracket turnover assembly and a sand barrel rotating assembly; the outer barrel bracket is mounted on the fixed base through the bracket turnover assembly so that the outer barrel bracket can rotate relative to the fixed base; the sand mixing barrel is rotatably mounted in the outer barrel bracket, the sand barrel rotating assembly is arranged on the outer barrel bracket, and the sand barrel rotating assembly can drive the sand mixing barrel to rotate; the sand mixing assembly is mounted on the outer barrel bracket, and the sand mixing blades of the sand mixing assembly are located in the sand mixing barrel.

[0031] Specifically, during the sand mixing operation, the raw materials are poured into the sand mixing drum, and then the sand mixing assembly, the bracket flipping assembly and the sand drum rotating assembly are started according to the operation process. The starting of the sand mixing assembly can cause the sand mixing blades located in the sand mixing drum to rotate, thereby stirring the raw materials. The starting of the bracket flipping assembly can drive the bracket outside the drum to rotate, and the sand mixing drum can rotate synchronously with the bracket outside the drum, thereby changing the angle between the center line of the sand mixing drum and the ground, so that the raw materials in the sand mixing drum are tumbled, so that more raw materials can be fully stirred, and the starting of the sand drum rotating assembly can drive the sand mixing drum to rotate, so that the raw materials in the sand mixing drum can be stirred faster and better, thereby improving production efficiency.

[0032] The present disclosure provides a sand core production line including a turnover sand mixing device. The sand core production line has the above advantages compared with the prior art, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] FIG1 is a schematic structural diagram of a turnover type sand mixing device provided in an embodiment of the present disclosure;

[0035] FIG2 is a schematic internal view of a flip-type sand mixing device provided in an embodiment of the present disclosure from a first perspective;

[0036] FIG3 is a schematic diagram of the interior of the flip-type sand mixing equipment provided by an embodiment of the present disclosure from a second viewing angle;

[0037] FIG4 is a schematic diagram of the movement of a stand flip assembly of a flip-type sand mixing device provided by an embodiment of the present disclosure being started separately;

[0038] FIG5 is a schematic diagram of the working state of the sand mixing component of the turnover type sand mixing equipment provided by an embodiment of the present disclosure.

[0039] icon:

[0040] 100-fixed base; 110-mounting base;

[0041] 200-external support;

[0042] 300-sand mixing drum; 310-support roller; 320-support bearing;

[0043] 400 - Sand mixing assembly; 410 - Sand mixing blades; 420 - Mounting support rod; 421 - Fixed gear ring; 430 - Actuator housing; 431 - Fourth power source; 432 - Swinging transmission gear; 433 - Second telescopic push rod; 434 - Adapter plate; 440 - L-shaped actuator rod; 450 - Third power source; 451 - Sand control cover; 460 - Blade quick-change head;

[0044] 500-bracket flip assembly; 510-first power source; 520-worm; 530-worm gear;

[0045] 600 - sand barrel rotating assembly; 610 - second power source; 620 - transmission gear; 630 - transmission ring gear. DETAILED DESCRIPTION

[0046] The technical solutions of the present disclosure are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described are only a portion of the embodiments of the present disclosure, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present disclosure without creative effort are within the scope of protection of the present disclosure.

[0047] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present disclosure.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0049] In this disclosure, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0050] The present disclosure is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0051] 1 , 2 , 3 , 4 and 5 , the present embodiment provides a flip-type sand mixing device, comprising a fixed base 100, an outer cylinder bracket 200, a sand mixing cylinder 300, a sand mixing assembly 400, a bracket flip assembly 500 and a sand cylinder rotating assembly 600; the outer cylinder bracket 200 is mounted on the fixed base 100 via the bracket flip assembly 500 so that the outer cylinder bracket 200 can rotate relative to the fixed base 100; the sand mixing cylinder 300 is rotatably mounted in the outer cylinder bracket 200, the sand cylinder rotating assembly 600 is disposed on the outer cylinder bracket 200, and the sand cylinder rotating assembly 600 can drive the sand mixing cylinder 300 to rotate; the sand mixing assembly 400 is mounted on the outer cylinder bracket 200, and the sand mixing blades 410 of the sand mixing assembly 400 are located in the sand mixing cylinder 300.

[0052] The sand mixing unit 400 is actuated to rotate the sand mixing blades 410 in the sand mixing drum 300, and the sand mixing blades 410 rotate in a direction opposite to the rotation direction of the sand mixing drum 300, thereby stirring the raw materials. The starting of the support turning unit 500 can drive the outer bracket 200 to rotate, and the sand mixing drum 300 can rotate synchronously with the outer bracket 200, thereby changing the angle between the center line of the sand mixing drum 300 and the ground, thereby causing the raw materials in the sand mixing drum 300 to roll, so that more raw materials can be fully stirred. The starting of the sand drum rotating unit 600 can drive the sand mixing drum 300 to rotate, so that the raw materials in the sand mixing drum 300 can be stirred faster and better, thereby improving production efficiency.

[0053] Among them, by providing the outer support 200 and the support flip assembly 500, the placement method of the conventional sand cylinder is changed, and the sand mixing cylinder 300 can be flipped to a set working angle according to actual production needs.

[0054] Referring to Figures 1, 2, 3, 4 and 5, in an optional scheme of this embodiment, the bracket flip assembly 500 includes a first power source 510, a worm 520 and a worm gear 530; the outer tube bracket 200 is pivotally connected to the fixed base 100, and the worm gear 530 is fixedly arranged at the pivot point between the outer tube bracket 200 and the fixed base 100, and the first power source 510 is fixedly arranged on the fixed base 100, and the first power source 510 is transmission-connected to the worm gear 530 through the worm 520.

[0055] Among them, the bracket flip assembly 500 transmits power through the worm 520 and the worm wheel 530. The worm wheel 520 group has a self-locking function, so that the outer bracket 200 can be rotated to any angle relative to the fixed base 100 without falling off, thereby allowing the sand mixing drum 300 to be rotated to any angle so that the raw materials in the sand mixing drum 300 can be fully rolled and stirred.

[0056] The fixing base 100 is provided with a mounting seat 110 configured to carry the first power source 510 .

[0057] The first power source 510 may be a motor. In addition, those skilled in the art may select the type and model of the first power source 510 according to actual needs, which will not be elaborated here.

[0058] 1 , 2 , 3 , 4 , and 5 , in an optional embodiment of the present invention, the sand drum rotating assembly 600 includes a second power source 610 , a transmission gear 620 , and a transmission ring gear 630 . The second power source 610 is mounted on the outer drum support 200 , and the transmission ring gear 630 is fixedly mounted on the outer wall of the sand mixing drum 300 . The second power source 610 is in transmission connection with the transmission ring gear 630 via the transmission gear 620 .

[0059] Among them, the outer ring of the sand mixing drum 300 is evenly provided with multiple support rollers 310, and the outer ring of the sand mixing drum 300 is tangent to the support rollers 310. The outer bracket 200 is provided with a support configured to install the support rollers 310; a support bearing 320 is provided between the bottom of the sand mixing drum 300 and the outer bracket 200.

[0060] Specifically, the second power source 610 can drive the transmission gear 620 to rotate, and the rotation of the transmission gear 620 can drive the transmission ring gear 630 to rotate, that is, drive the sand mixing drum 300 to rotate.

[0061] The second power source 610 may be a motor. In addition, those skilled in the art may select the type and model of the second power source 610 according to actual needs, which will not be elaborated here.

[0062] 1 , 2 , 3 , 4 and 5 , in an optional solution of this embodiment, the sand mixing assembly 400 includes a mounting rod 420, an actuator housing 430, an L-shaped actuator rod 440, a third power source 450 and a sand mixing blade 410; the mounting rod 420 is mounted on the outer cylinder bracket 200, the actuator housing 430 is rotatably arranged on the mounting rod 420, and one end of the L-shaped actuator rod 440 is mounted in the actuator housing 430; the third power source 450 is mounted on the other end of the L-shaped actuator rod 440, and the sand mixing blade 410 is mounted on the third power source 450.

[0063] The mounting support rod 420 is a first telescopic push rod.

[0064] Among them, a fixed ring gear 421 is provided at one end of the first telescopic push rod connected to the execution housing 430, and the execution housing 430 is rotatably set on the first telescopic push rod; a fourth power source 431 is provided in the execution housing 430, and the fourth power source 431 is connected to a swing transmission tooth 432, and the swing transmission tooth 432 is engaged with the fixed ring gear 421.

[0065] A second telescopic push rod 433 configured to push the L-shaped actuator rod 440 is provided in the actuator housing 430 . An adapter plate 434 is provided at the protruding end of the second telescopic push rod 433 . One end of the L-shaped actuator rod 440 is connected to the adapter plate 434 .

[0066] Specifically, during the mixing process, the third power source 450 can drive the mixing blades 410 to rotate, thereby mixing the raw materials. Furthermore, during the mixing process, the mounting rod 420 can adjust the height of the actuator housing 430, thereby changing the depth of the mixing blades 410 within the mixing drum 300.

[0067] Furthermore, the fourth power source 431 drives the swinging transmission gear 432 to rotate, which in turn rotates around the fixed ring gear 421, thereby driving the actuator housing 430 to rotate relative to the mounting support rod 420. Furthermore, in conjunction with the second telescopic push rod 433, the horizontal position of the entire sand mixing blade 410 within the sand mixing drum 300 can be adjusted. Specifically, the operation of the second telescopic push rod 433 drives the movement of the adapter plate 434, which in turn drives the synchronous movement of the L-shaped actuator rod 440, allowing the sand mixing blade 410 to be moved to any position within the sand mixing drum 300. Combined with the height adjustment of the mounting support rod 420, the sand mixing blade 410 can be moved to any position within the three-dimensional space of the sand mixing drum 300, ensuring thorough mixing of the raw materials. At the same time, the sand mixing blade 410 can maintain a slight distance from the wall of the sand mixing drum 300, preventing sand from sticking to the wall.

[0068] In addition, the third power source 450 can be a pneumatic motor, and the fourth power source 431 can be an electric motor. In addition, those skilled in the art can choose the type and model of the third power source 450 and the fourth power source 431 according to actual needs, which will not be repeated here.

[0069] It should be noted that a blade quick-change head 460 can be provided between the third power source 450 and the sand mixing blade 410 to facilitate the staff to replace the sand mixing blade 410. In addition, a sand-proof cover 451 is coated on the outside of the third power source 450 to improve the service life of the third power source 450.

[0070] In addition, the operation process of the flip-type sand mixing equipment provided in this embodiment is as follows: the sand mixing drum 300 rotates to the material feeding position, with the drum mouth facing upward horizontally and the angle with the ground being 0°, and is ready for material feeding → the sand drum rotating assembly 600 drives the sand mixing drum 300 to rotate around the drum center. At the same time, the sand mixing assembly 400 moves the sand mixing blades 410 to the bottom of the sand mixing drum 300 and drives the sand mixing blades 410 to rotate in the opposite direction to the sand mixing drum 300 → core making sand, auxiliary materials, adhesives and other raw materials are added to the sand mixing drum 300 in sequence and step by step for mixing → after the material feeding is completed, the sand mixing drum 300 and the sand mixing blades 410 continue to rotate in opposite directions to each other to mix the materials, while the bracket flip assembly 500 starts to tilt counterclockwise from 0° to 60°, and then tilts clockwise from 60° to -60°, according to process requirements. Tilt back and forth for several rounds → In conjunction with the above tilting action of the sand mixing drum 300 from 60° to -60°, the sand mixing assembly 400 moves the sand mixing blades 410 up and down and left and right while rotating, and performs multi-position trajectory motions at different depths inside the sand mixing drum 300 → Sand mixing is completed, the bracket flip assembly 500 tilts clockwise to -120°, and the sand mixing drum 300 and the sand mixing blades 410 continue to rotate in opposite directions to mix the materials. At the same time, the sand mixing assembly 400 moves the blades up and down and left and right, and performs multi-position trajectory motions at different depths inside the sand mixing drum 300 to pour out the mixed sand → After the sand in the sand mixing drum 300 is completely poured out, the sand mixing drum 300 rotates to the feeding position, with the drum mouth facing horizontally upwards and an angle of 0° to the ground, ready to receive the next round of feeding → One sand mixing cycle is completed.

[0071] This embodiment provides a sand core production line, including a turnover sand mixing device.

[0072] Specifically, the sand core production line provided in this embodiment has the advantages of the above-mentioned turnover sand mixing equipment compared with the prior art, which will not be described in detail here.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure. Industrial Applicability

[0074] In summary, the present disclosure provides a flip-type sand mixing equipment and a sand core production line, which can pour the raw materials into the sand mixing barrel during the sand mixing operation, and then start the sand mixing component, the bracket flipping component and the sand barrel rotating component according to the operation process, wherein the sand mixing component is started to rotate the sand mixing blades located in the sand mixing barrel, thereby stirring the raw materials, the bracket flipping component is started to drive the bracket outside the barrel to rotate, and the sand mixing barrel can rotate synchronously with the bracket outside the barrel, thereby changing the angle between the center line of the sand mixing barrel and the ground, thereby causing the raw materials in the sand mixing barrel to roll, so that more raw materials can be fully stirred, and the sand barrel rotating component is started to drive the sand mixing barrel to rotate, so that the raw materials in the sand mixing barrel can be stirred faster and better, thereby improving production efficiency.

Claims

1. A turnover type sand mixing equipment, characterized in that: include: A fixed base (100), an outer support (200), a sand mixing cylinder (300), a sand mixing assembly (400), a support turning assembly (500) and a sand cylinder rotating assembly (600); The outer cylinder bracket (200) is mounted on the fixed base (100) via the bracket flip assembly (500), so that the outer cylinder bracket (200) can flip relative to the fixed base (100); The sand mixing cylinder (300) is rotatably mounted in the cylinder outer bracket (200), the sand cylinder rotating assembly (600) is arranged on the cylinder outer bracket (200), and the sand cylinder rotating assembly (600) is capable of driving the sand mixing cylinder (300) to rotate; The sand mixing assembly (400) is mounted on the outer support (200) of the cylinder, and the sand mixing blades (410) of the sand mixing assembly (400) are located in the sand mixing cylinder (300).

2. The overturnable sand mixing equipment according to claim 1, characterized in that: The support flip assembly (500) includes a first power source (510), a worm (520) and a worm wheel (530); The outer tube bracket (200) is pivotally connected to the fixed base (100), the worm gear (530) is fixedly arranged at the pivot point between the outer tube bracket (200) and the fixed base (100), the first power source (510) is fixedly arranged on the fixed base (100), and the first power source (510) is transmission-connected to the worm gear (530) via the worm (520).

3. The overturnable sand mixing equipment according to claim 2, characterized in that: The fixed base (100) is provided with a mounting seat (110) configured to carry the first power source (510).

4. The turnover sand mixing equipment according to any one of claims 1 to 3, characterized in that: The sand barrel rotating assembly (600) includes a second power source (610), a transmission gear (620) and a transmission ring gear (630); The second power source (610) is arranged on the outer support (200) of the cylinder, the transmission ring gear (630) is fixedly sleeved on the outer wall of the sand mixing cylinder (300), and the second power source (610) is transmission-connected to the transmission ring gear (630) via the transmission gear (620).

5. The overturnable sand mixing equipment according to claim 4, characterized in that: The outer ring of the sand mixing cylinder (300) is provided with a supporting roller (310), and the cylinder outer bracket (200) is provided with a support configured to install the supporting roller (310); A support bearing (320) is provided between the bottom of the sand mixing drum (300) and the drum outer support (200).

6. The turnover sand mixing equipment according to any one of claims 1 to 5, characterized in that: The sand mixing assembly (400) comprises a mounting support rod (420), an execution housing (430), an L-shaped execution rod (440), a third power source (450), and the sand mixing blade (410); The mounting support rod (420) is mounted on the outer cylinder bracket (200), the execution housing (430) is rotatably disposed on the mounting support rod (420), and one end of the L-shaped execution rod (440) is mounted in the execution housing (430); The third power source (450) is installed at the other end of the L-shaped actuator rod (440). The sand mixing blade (410) is installed on the third power source (450).

7. The overturnable sand mixing equipment according to claim 6, characterized in that: The mounting support rod (420) adopts a first telescopic push rod.

8. The turnover type sand mixing equipment according to claim 7, characterized in that: One end of the first telescopic push rod connected to the execution housing (430) is provided with a fixed gear ring (421), and the execution housing (430) is rotatably provided on the first telescopic push rod; A fourth power source (431) is provided in the execution housing (430), and the fourth power source (431) is connected to a swing transmission tooth (432), and the swing transmission tooth (432) is meshed with the fixed gear ring (421).

9. The turnover type sand mixing equipment according to claim 8, characterized in that: A second telescopic push rod (433) configured to push the L-shaped actuator rod (440) is provided in the actuator housing (430); an adapter plate (434) is provided at the protruding end of the second telescopic push rod (433); and one end of the L-shaped actuator rod (440) is connected to the adapter plate (434).

10. A sand core production line, characterized in that: The invention comprises the turnover type sand mixing equipment according to any one of claims 1 to 9.

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