CN116174659A - Quick replacement device and method for blowing template - Google Patents

Abstract

The invention relates to a device and method for quick replacement of an air-blowing formwork, which includes: a formwork frame, which is used for movable installation on the sand mold conveying raceway; at least two stations, which are arranged on the formwork frame, and one of the The first template is installed on the station, and the second template is installed on the other station; when the mold needs to be changed, the template frame is driven to move on the sand conveying raceway, and the first template/ The second template is switched to the working area of the sand conveying raceway. By setting a template frame with at least two stations and installing at least two templates on the template frame in advance, when in use, the first template is at the working position, and the second template is at the offline position. The template is moved into the working position, and the first template is moved out to the offline position, so that the template frame can shuttle repeatedly between the two stations during the type change, which shortens the time for the type change, and the molding line does not need to stop and wait, which greatly improves the production efficiency.

Description

Device and method for quick replacement of blowing template

technical field

The invention relates to the field of casting production, in particular to a device and method for quickly replacing an air blowing template.

Background technique

At present, when producing castings with green sand molds, many vent holes need to be drilled on the upper sand mold. After drilling the vent holes, it is necessary to blow air to the vent holes to clean up the residual sand particles.

In the related technology, the air blowing method of vent holes is adopted by robots hole by hole. When there are many vent holes, several robots are often installed to blow the shape; there is also a template blowing method, and all the vent holes can be blown and cleaned at the same time. When using the blowing formwork method, the formwork needs to be replaced synchronously when the product is changed in the production line. The blowing formwork is installed on the sand mold to fix the station. When changing the mold, the production formwork will be removed, and then the product formwork to be produced will be installed. This process usually takes nearly 10 minutes, which is much longer than the changeover time of the main machine of the production line (general large-scale casting molding The production cycle of the production line is within 45s/box, and the changeover of the main machine is completed within the cycle), which leads to the shutdown of the molding line and low production efficiency.

Contents of the invention

Embodiments of the present invention provide a device and method for quick replacement of blowing templates to solve the problems in the related art that the replacement process is complicated and takes a long time, resulting in downtime of the molding line and low production efficiency.

In the first aspect, a quick-change device for blowing templates is provided, which includes: a template frame, which is used for movable installation on the sand mold conveying raceway; at least two stations, which are arranged on the template frame, and a The first template is installed on the station, and the second template is installed on the other station; when it is necessary to change the mold, the template frame is driven to move on the sand conveying raceway, and the first template / The second template is switched to the working area of the sand conveying raceway.

In some embodiments, the first formwork and the second formwork are arranged at intervals on one side of the formwork frame, and the formwork frame is movably installed on the sand mold conveying raceway.

In some embodiments, the axis of the template frame is perpendicular to the axis of the sand conveying raceway, and the template frame can move in a direction perpendicular to the sand conveying raceway.

In some embodiments, guide rods are provided on both sides of the formwork frame, and a linear bearing seat is installed on the sand conveying raceway, and the guide rod is passed through the linear bearing seat.

In some embodiments, an air cylinder is installed on the sand conveying raceway, and the template frame is connected to the output end of the air cylinder.

In some embodiments, the first template and the second template are detachably mounted on the workstation.

In the second aspect, a method for quickly replacing the blowing template is provided, which includes the following steps: respectively installing the first template and the second template on the two stations of the template frame, and using one of the templates to perform blowing cleaning; During molding, the template frame is driven to move on the sand conveying raceway, and another template is switched to the working area of the sand conveying raceway.

In some embodiments, the driving the template frame to move on the sand conveying raceway includes: driving the template frame to move along a direction perpendicular to the sand conveying raceway.

In some embodiments, in the step of driving the formwork frame to move in a direction perpendicular to the sand conveying raceway, guide rods on the formwork frame are used to move in linear bearing seats for guidance.

In some embodiments, in the step of driving the formwork frame to move along a direction perpendicular to the sand conveying raceway, a cylinder is used to drive the formwork frame to move.

The beneficial effects brought by the technical solution provided by the invention include:

Embodiments of the present invention provide a quick replacement device and method for blowing templates. By setting up a template frame with at least two stations and installing at least two templates on the template frame in advance, when in use, the first template is located at the working position. position, the second template is located in the offline position, when the type needs to be changed, the second template is moved into the working position, and the first template is moved out to the offline position, so that the template frame can repeatedly shuttle between the two stations during the type change, shortening the During the changeover time, the molding line does not need to stop and wait, which greatly improves the production efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Figure 1 is a schematic structural view of a quick-change device for blowing templates provided by an embodiment of the present invention in a working state;

Fig. 2 is a schematic structural view of another working state of a quick-change device for blowing templates provided by an embodiment of the present invention.

Labels in the figure:

1. Template frame; 2. Sand conveying raceway; 3. First template; 4. Second template; 5. Guide rod; 6. Linear bearing seat; 7. Cylinder.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The embodiment of the present invention provides a quick replacement device for blowing templates, which can solve the problems in the related art that the replacement process is complex and takes a long time, resulting in shutdown of the molding line and low production efficiency.

Referring to Fig. 1 and Fig. 2, a blowing formwork quick replacement device provided for an embodiment of the present invention may include: a formwork frame 1, which is used for movable installation on the sand mold conveying raceway 2; at least two Station, it is located on described formwork frame 1, and first formwork 3 is installed on one described station, and second formwork 4 is installed on another described station; When needs changing type, drive described formwork The frame 1 moves on the sand conveying raceway 2, and switches the first template 3/second template 4 to the working area of the sand conveying raceway 2. In this embodiment, when the blowing formwork method is adopted, when the product is changed in the production line, since the blowing formwork is movably installed on the sand conveying raceway 2, by setting the formwork frame 1 with at least two stations, and at least The two templates are installed on the template frame 1 in advance. When in use, the first template 3 is at the working position, and the second template 4 is at the offline position. Move out to the off-line position, so that the formwork frame 1 can repeatedly shuttle between the two stations during the type change, shortening the time for type change, and it is not necessary to remove the production formwork and then install the product formwork to be produced during the type changeover, the molding line There is no need to stop and wait, which greatly improves the production efficiency.

1 and 2, in one embodiment, the first formwork 3 and the second formwork 4 are arranged at intervals on one side of the formwork frame 1, and the formwork frame 1 is movably installed on On the described sand conveying raceway 2, in the present embodiment, the formwork frame 1 includes a main frame body located at both ends and a sub-frame body connecting the two main frame bodies. There are two sub-frame bodies, and the two sub-frame bodies are parallel to each other. Set at intervals, the first template 3 and the second template 4 are arranged at intervals on the sub-frame, the template frame 1 is movably installed on the sand conveying raceway 2, when in use, the first template 3 is at the working position, and the second template 4 is at the In the offline position, when the model needs to be changed, the template frame 1 is pushed to move, the second template 4 is moved into the working position, and the first template 3 is moved out to the offline position, so that the template frame 1 can repeatedly shuttle between the two stations during the model change , simple structure, convenient and fast, shortening the time for type change, when changing type, it is not necessary to remove the production formwork and then install the product formwork to be produced, the molding line does not need to stop and wait, which greatly improves the production efficiency.

In another embodiment, the first formwork 3 and the second formwork 4 are arranged on opposite sides of the formwork frame 1, and the formwork frame 1 is reversibly installed on the sand conveying raceway 2 , in this embodiment, a station is provided on opposite sides of the template frame 1, the first template 3 and the second template 4 are arranged on the opposite sides of the template frame 1, and the template frame 1 can be reversibly installed on the sand conveyor roller On the road 2, when in use, the first template 3 is at the working position, and the second template 4 is at the offline position. When it is necessary to change the model, pull up the template frame 1 and turn it over, turn the second template 4 into the working position, and the first template 3 Then turn it out to the offline position, so that the formwork frame 1 can repeatedly shuttle between two stations during the type change, occupying a small area, and can be set up multiple times, shortening the time for type change, and it is not necessary to remove the production formwork during type change After installing the template of the product to be produced, the molding line does not need to stop and wait, which greatly improves the production efficiency.

Referring to Fig. 1 and Fig. 2, in some embodiments, the axis of the formwork frame 1 is perpendicular to the axis of the sand conveying raceway 2, and the formwork frame 1 can be vertical to the sand conveying raceway 2 In this embodiment, the formwork frame 1 includes a main frame body located at both ends and a sub-frame body connecting the two main frame bodies. There are two sub-frame bodies, and the two sub-frame bodies are arranged in parallel and at intervals. The first The template 3 and the second template 4 are arranged at intervals on the sub-frame body, the sub-frame body is perpendicular to the axis of the sand mold conveying raceway 2, the main frame body is parallel to the axis of the sand mold conveying raceway 2, and the formwork frame 1 can be moved along the axis perpendicular to the sand mold conveying roller Move in the direction of lane 2. When in use, the first formwork 3 is at the working position, and the second formwork 4 is at the offline position. When the mold needs to be changed, the formwork frame 1 is pushed to move along the direction perpendicular to the sand mold conveying raceway 2, and the second formwork 4 is moved into the working position. The first template 3 is moved out to the off-line position, so that the template frame 1 can repeatedly shuttle between the two stations when the model is changed. The structure is simple, convenient and fast, and the production efficiency is greatly improved. And when the first formwork 3 is in the working position, that is, directly above the sand conveying raceway 2, and the second formwork 4 is in the offline position, that is, on the channel on one side, the sand conveying raceway 2 is close to the first formwork One side of 3 will reserve a walkway. When the second template 4 is in the working position, it is located directly above the sand conveying raceway 2. When the first template 3 is in the offline position, it is located on the channel on one side. , then the side of the sand conveying raceway 2 close to the second formwork 4 will reserve a pedestrian passage, because many times the sand conveying raceway needs pedestrian passages on both sides, this frame shuttle structure can always keep the passage on one side unobstructed, reducing Space occupation of the formwork changer.

In another embodiment, the axis of the template frame 1 is parallel to the axis of the sand conveying raceway 2, and the template frame 1 can move in a direction parallel to the sand conveying raceway 2. In this embodiment The formwork frame 1 includes a main frame body located at two ends and a sub-frame body connecting the two main frame bodies. There are two sub-frame bodies, and the two sub-frame bodies are arranged in parallel and at intervals. The frame body is arranged at intervals, the auxiliary frame body is parallel to the axis of the sand mold conveying raceway 2, and the formwork frame 1 can move along the direction parallel to the sand mold conveying raceway 2. When in use, the first formwork 3 is at the working position, and the second formwork 4 is at the off-line position. When the mold needs to be changed, the formwork frame 1 is pushed to move in a direction parallel to the sand mold conveying raceway 2, and the second formwork 4 is moved into the working position. The first template 3 is moved out to the off-line position, so that the template frame 1 can repeatedly shuttle between the two stations when the model is changed. The structure is simple, convenient and fast, and the production efficiency is greatly improved. And when the first template 3 is in the working position, that is, it is directly above the sand conveying raceway 2, and when the second template 4 is in the off-line position, it is also located directly above the sand conveying raceway 2, then the sand conveying raceway 2 Pedestrian passages are reserved on both sides. Since the sand conveying raceway often requires pedestrian passages on both sides, this frame shuttle structure can always keep the passages on both sides unobstructed, further reducing the space occupied by the formwork changing device.

In another embodiment, the template frame 1 is detachably installed directly above the sand mold conveying raceway 2, and the template frame 1 can be turned over on the sand mold conveying raceway 2. In this embodiment, the template There is a station on the opposite sides of the frame 1. The first formwork 3 and the second formwork 4 are arranged on the opposite sides of the formwork frame 1. The formwork frame 1 can be reversibly installed on the sand mold conveying raceway 2. When in use, The first formwork 3 is located at the working position, and the second formwork 4 is located at the offline position. When the model needs to be changed, the formwork frame 1 is pulled up and turned over, the second formwork 4 is turned into the working position, and the first formwork 3 is turned out to the offline position. The formwork frame 1 can be replaced repeatedly at two stations when the type is changed, the structure is simple, convenient and fast, and the production efficiency is greatly improved. And when the first template 3 is in the working position, that is, it is directly above the sand conveying raceway 2, and when the second template 4 is in the off-line position, it is also located directly above the sand conveying raceway 2, then the sand conveying raceway 2 Pedestrian passages are reserved on both sides. Since the sand conveying raceway often requires pedestrian passages on both sides, this frame shuttle structure can always keep the passages on both sides unobstructed, further reducing the space occupied by the formwork changing device.

Referring to Fig. 1 and Fig. 2, in some embodiments, guide rods 5 are provided on both sides of the template frame 1, linear bearing housings 6 are installed on the sand conveying raceway 2, and the guide rods 5 pass through Set in the linear bearing seat 6, in this embodiment, guide rods 5 are connected between the two main frame bodies of the template frame 1, and the two guide rods 5 are respectively located on opposite sides of the template, and the linear bearing seat 6 is provided with four Two sets of two are respectively installed on the two edges of the sand conveying raceway 2, two sets of linear bearing seats 6 are respectively located on the opposite sides of the formwork frame 1, and the guide rods 5 are installed in the linear bearing seats 6. When in use, the first formwork 3 is at the working position, and the second formwork 4 is at the off-line position. When it is necessary to change the mold, the formwork frame 1 is pushed to move along the direction perpendicular to the sand mold conveying raceway 2, and the guide rod 5 is in the linear bearing seat 6 at the same time. Moving along the axial direction, the second template 4 is moved into the working position, and the first template 3 is moved out to the offline position, so that the template frame 1 can repeatedly shuttle between the two stations during the type change, which is convenient to use and easy to control the direction.

Referring to Fig. 1 and Fig. 2, in some embodiments, an air cylinder 7 is installed on the sand conveying raceway 2, and the template frame 1 is connected to the output end of the air cylinder 7. In this embodiment, the two cylinders 7 The ends are respectively fixed on both sides of the sand conveying raceway 2, the output end of the template frame 1 and the cylinder 7. When in use, the first template 3 is at the working position, and the second template 4 is at the offline position. The output end of the cylinder 7 is extended to drive the template frame 1 to move forward, the second template 4 is moved into the working position, the first template 3 is moved out to the offline position, and the output end of the cylinder 7 is used to shrink the drive template frame when the model needs to be changed next time 1 moves backward, the first template 3 is moved into the working position, and the second template 4 is moved out to the offline position, so that the template frame 1 can repeatedly shuttle between the two stations during the type change, which is convenient to use and shortens the time for type change , improving production efficiency.

In another embodiment, the first template 3 is located at the working position, and the second template 4 is located at the offline position. When a type change is required, the template frame 1 is manually pushed forward to move the second template 4 into the working position. The template 3 is moved out to the offline position. When the next time it needs to be changed, the template frame 1 is manually pushed to move backward, the first template 3 is moved into the working position, and the second template 4 is moved out to the offline position, so that the template frame 1 is in the working position. When changing the type, it can repeatedly shuttle between the two stations, and it can also quickly change the type when the cylinder 7 fails.

Referring to Fig. 1 and Fig. 2, in some embodiments, the first template 3 and the second template 4 are detachably installed on the station. In this embodiment, when the template needs to be replaced, the The first template 3 and the second template 4 are disassembled from the work station and replaced with other templates, so that the quick replacement device for the blowing template is more versatile.

Referring to Fig. 1 and Fig. 2, a method for quickly replacing an air blowing formwork provided by an embodiment of the present invention may include the following steps: install the first formwork 3 and the second formwork respectively on the two stations of the formwork frame 1 Template 4, use one of the templates for blowing and cleaning; when it is necessary to change the mold, drive the template frame 1 to move on the sand conveying raceway 2, and switch the other template to the work of the sand conveying raceway 2 area, in this embodiment, when the blowing formwork method is adopted, when the product is changed in the production line, since the blowing formwork is movably installed on the sand mold conveying raceway 2, by setting the formwork frame 1 with at least two stations, and Install at least two templates on the template frame 1 in advance. When in use, the first template 3 is at the working position, and the second template 4 is at the offline position. 3 is moved out to the off-line position, so that the formwork frame 1 can repeatedly shuttle between the two stations during the changeover, shortening the changeover time, and it is not necessary to remove the production formwork and then install the product formwork to be produced when changing the formwork. The molding line does not need to stop and wait, which greatly improves the production efficiency.

Referring to Fig. 1 and Fig. 2, in some embodiments, the driving the formwork frame 1 to move on the sand conveying raceway 2 includes: driving the formwork frame 1 along a direction perpendicular to the sand conveying raceway 2, in this embodiment, the formwork frame 1 includes a main frame body located at both ends and a sub-frame body connecting the two main frame bodies, there are two sub-frame bodies, and the two sub-frame bodies are arranged in parallel and at intervals. The first formwork 3 and the second formwork 4 are arranged at intervals on the sub-frame body, the sub-frame body is perpendicular to the axis of the sand mold conveying raceway 2, the main frame body is parallel to the axis of the sand mold conveying raceway 2, and the formwork frame 1 can be transported along the axis perpendicular to the sand mold conveyance The direction of raceway 2 moves. When in use, the first formwork 3 is at the working position, and the second formwork 4 is at the offline position. When the mold needs to be changed, the formwork frame 1 is pushed to move along the direction perpendicular to the sand mold conveying raceway 2, and the second formwork 4 is moved into the working position. The first template 3 is moved out to the off-line position, so that the template frame 1 can repeatedly shuttle between the two stations when the model is changed. The structure is simple, convenient and fast, and the production efficiency is greatly improved. And when the first formwork 3 is in the working position, that is, directly above the sand conveying raceway 2, and the second formwork 4 is in the offline position, that is, on the channel on one side, the sand conveying raceway 2 is close to the first formwork One side of 3 will reserve a walkway. When the second template 4 is in the working position, it is located directly above the sand conveying raceway 2. When the first template 3 is in the offline position, it is located on the channel on one side. , then the side of the sand conveying raceway 2 close to the second formwork 4 will reserve a pedestrian passage, because many times the sand conveying raceway needs pedestrian passages on both sides, this frame shuttle structure can always keep the passage on one side unobstructed, reducing Space occupation of the formwork changer.

1 and 2, in some embodiments, in the step of driving the formwork frame 1 to move along a direction perpendicular to the sand conveying raceway 2, the mold is used to

The guide rod 5 on the plate frame 1 moves in the linear bearing seat 6 for guidance. In this embodiment, a guide rod 5 is connected between the two main frame bodies of the 5 template frame 1, and the two guide rods 5 are respectively located on the sides of the template. On the opposite sides, there are four linear bearing seats 6, each of which is a group of two, which are respectively installed on the two edges of the sand conveying raceway 2, and the two sets of linear bearing seats 6 are respectively located on the opposite sides of the template frame 1, guiding The rod 5 is installed in the linear bearing seat 6. When in use, the first template 3 is at the working position, and the second template 4 is at the off-line position. When it is necessary to change the model, push the template frame 0 frame 1 along the direction perpendicular to the sand mold conveying raceway 2. At the same time, the guide rod 5 moves along the axial direction in the linear bearing seat 6, the second template 4 is moved into the working position, and the first template 3 is moved out to the offline position, so that the template frame 1 can be in two The station shuttles repeatedly, which is convenient to use and easy to control the direction.

Referring to Fig. 1 and Fig. 2, in some embodiments, in the step of driving the template frame 5 to move along the direction perpendicular to the sand conveying raceway 2, the template is driven by a cylinder 7 The frame 1 moves, and in this embodiment, the two ends of the cylinder 7 are respectively fixed on both sides of the sand conveying raceway 2, the output end of the template frame 1 and the cylinder 7, when in use, the first template 3 is in the working position, and the second template 4 is located in the offline position, when it is necessary to change the model, use

The output end of the cylinder 7 elongates to drive the template frame 1 to move forward, and the second template 4 is moved into the 0 working position, and the first template 3 is then moved out to the offline position.

Use the output end of the cylinder 7 to shrink and drive the formwork frame 1 to move backward, move the first formwork 3 to the working position, and move the second formwork 4 to the offline position, so that the formwork frame 1 can be repeated at two stations when changing the model Shuttle, easy to use, shorten the changeover time and improve production efficiency.

5 The principle of a quick replacement device for blowing templates provided by the embodiment of the present invention is as follows:

The main body of the entire mold changing device is a "pan"-shaped frame structure. The outside of the formwork frame 1 is two guide rods 5, and the inside is a formwork fixing frame. There are two formwork fixing stations A and B. The guide rods 5 and the fixing frame pass through the two ends. The connecting plate forms an overall frame structure, two guide rods 5 pass through two linear bearing seats 6 each, and the entire formwork frame 1 is fixed on the steel structure of the sand conveyor raceway 2 through the support of four linear bearing seats 6, and the steel structure of the equipment The cylinder 7 is equipped with and connected with the formwork frame 1, and can drive the formwork frame 1 to shuttle and move on the linear bearing seat 6.

Assuming station A is the station for producing products, when it is necessary to change the mold, the template to be produced is loaded into station B in advance, and when the next product sand mold advances into the sand blowing station, the pneumatic system controls the cylinder 7 to drive the template frame 1 Shuttle movement, the second template 4 is moved into the working position, the first template 3 is then moved out to the offline position, and the next product template can be replaced for use. The formwork frame 1 shuttles repeatedly at the AB positions during type change, and each time the automatic type change only takes 3 seconds. Because the formwork frame 1 is supported and guided by linear bearings, the movement resistance is very small. When the pneumatic system fails, the cylinder can be temporarily abandoned, and the formwork frame 1 can be easily pushed manually to realize the change. At the same time, in many cases, pedestrian passages are required on both sides of the sand conveying raceway. This frame shuttle structure can always keep the passage on one side unobstructed, reducing the space occupied by the formwork changing device. By turning the installation of the formwork to be produced into an offline mode, the rapid and automatic changeover of the blown formwork is realized, and the changeover time is reduced from 10 minutes to 3 seconds, eliminating the waste of changeover time in this process. The structure is simple, which reduces the space occupied by the changeover device, and can be quickly and easily changed manually, and the overall reliability is extremely high.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be construed as limiting the invention. Unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, or an indirect connection through an intermediary, or an internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

It should be noted that in the present invention, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply There is no such actual relationship or order between these entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above descriptions are only specific embodiments of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Accordingly, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims (10)

1. A blowing template quick replacement device is characterized in that it comprises: Formwork frame (1), which is used for movable installation on the sand conveying raceway (2); At least two stations, which are arranged on the template frame (1), a first template (3) is installed on one of the stations, and a second template (4) is installed on the other station; When it is necessary to change the mold, drive the template frame (1) to move on the sand conveying raceway (2), and switch the first template (3)/second template (4) to the sand conveying The working area of the raceway (2). 2. The blowing template quick replacement device as claimed in claim 1, characterized in that: The first formwork (3) and the second formwork (4) are arranged at intervals on one side of the formwork frame (1), and the formwork frame (1) is movably installed on the sand mold conveying raceway ( 2) on. 3. The blowing template quick replacement device as claimed in claim 2, characterized in that: The axis of the template frame (1) is perpendicular to the axis of the sand mold conveying raceway (2), and the template frame (1) can move in a direction perpendicular to the sand mold conveying raceway (2). 4. The blowing template quick replacement device as claimed in claim 1, characterized in that: Guide rods (5) are provided on both sides of the formwork frame (1), and a linear bearing seat (6) is installed on the sand mold conveying raceway (2), and the guide rod (5) is installed on the linear bearing seat (6) inside. 5. The blowing template quick replacement device as claimed in claim 1, characterized in that: An air cylinder (7) is installed on the sand conveying raceway (2), and the template frame (1) is connected with the output end of the air cylinder (7). 6. The blowing template quick replacement device as claimed in claim 1, characterized in that: The first template (3) and the second template (4) are detachably installed on the station. 7. A quick replacement method for blowing templates, characterized in that it comprises the following steps: The first formwork (3) and the second formwork (4) are respectively installed on the two stations of the formwork frame (1), and one of the formworks is used for blowing and cleaning; When the mold needs to be changed, the template frame (1) is driven to move on the sand mold conveying raceway (2), and another template is switched to the working area of the sand mold conveying raceway (2). 8. The quick replacement method of the blowing template as claimed in claim 7, wherein said driving said template frame (1) to move on said sand mold conveying raceway (2) comprises: The formwork frame (1) is driven to move along a direction perpendicular to the sand mold conveying raceway (2). 9. The quick replacement method of the blowing template as claimed in claim 8, characterized in that: In the step of driving the formwork frame (1) to move along the direction perpendicular to the sand conveying raceway (2), the guide rod (5) on the formwork frame (1) is used to move the linear bearing seat ( 6) Inward movement for guidance. 10. The quick replacement method of the blowing template as claimed in claim 8, characterized in that: In the step of driving the formwork frame (1) to move along a direction perpendicular to the sand conveying raceway (2), the formwork frame (1) is driven to move by a cylinder (7).

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