Investment shell making machine

Abstract

An investment shell making machine comprises a sticky slurry shell making device, the sticky slurry shell making device comprises a lifting device and a clamping device, and the clamping device is installed on a lifting frame body of the lifting device; the slurry sticking and shell making device further comprises a frame body and a transmission device, the transmission device comprises a sliding plate, a transmission rack, a transmission gear, two linear guide rails and two sliding block sets, the transmission rack and the transmission gear are meshed, the transmission rack is installed in the frame body in the length direction of the frame body, and the two linear guide rails are installed in the frame body in the length direction of the frame body. The two linear guide rails are arranged on the two sides of the transmission rack respectively, the two linear guide rails and the two sliding block sets are in one-to-one sliding fit, the two sliding block sets are jointly installed on the sliding plate, the transmission motor is installed on the sliding plate, the transmission gear is installed on an output shaft of the transmission motor, and the lifting frame body is installed on the sliding plate. Compared with the prior art, the clamping device is not suspended on the frame body any more, but is supported by the two fulcrums, so that the rigidity of the clamping device is increased, and the structural stability of the clamping device is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of precision casting technology more particularly to a wax pattern shell forming machine. BACKGROUND

[0002] The precision casting of wax pattern, also known as the precision casting of wax pattern or the lost wax casting, is to make a wax pattern with wax material, then the wax pattern is coated with a layer of coating slurry on the surface, and then a layer of sand is hung on the surface after the slurry coating and sand coating, hardening and drying treatment, so as to form a mold shell on the surface of the model, and then the mold shell is heated to make the wax material melt out of the pouring port to form a hollow shell, and then the hollow shell is baked to obtain a solid mold shell, and then the metal liquid is poured into the pouring port, and the metal casting is obtained after condensation; wherein, after the wax pattern is made, a layer of coating slurry is first coated on the surface, and then a layer of sand is hung on the surface, and this process is generally carried out in the slurry barrel and the sand barrel.

[0003] However, the Z-axis assembly is suspended between the two linear guides, that is, the clamping assembly is suspended between the two linear guides, and the clamping assembly is heavy and large, so that the rigidity of the clamping assembly is poor, and the clamping assembly shakes obviously when it moves, which causes the wax pattern to break easily during the working process of the clamping assembly; in particular, the clamping assembly moves horizontally by using a synchronous belt assembly, that is, two synchronous pulleys and a synchronous belt wound between the two synchronous pulleys are installed on the gantry, and one of the synchronous pulleys rotates by the driving of the transmission motor, so that the rigidity of the clamping assembly is not enough during the movement of the Z-axis assembly, which is more likely to cause the wax pattern to break.

[0004] Therefore, the present application is based on the in-depth research. INVENTION CONTENTS

[0005] The utility model discloses a kind of rigid wax pattern shell forming machines, which can ensure that workpiece on clamping assembly is not easy to break during working process.

[0006] To achieve the above object, the solution of the utility model is as follows:

[0007] A kind of investment shell molding machine, including sticky pulp shell molding device, the sticky pulp shell molding device includes lifting device and clamping device, the clamping device is installed in the lifting frame of lifting device in a way of being able to lift;The sticky pulp shell molding device further includes frame and the transmission device of the first side of installation in the frame, the transmission device includes sliding plate, mutually meshing transmission rack and transmission gear, two linear guides and two slider groups, the transmission rack is installed in the frame along the length direction of the frame, two the linear guide is respectively installed in the frame along the length direction of the frame, and two the linear guide is divided and located at the two sides of the transmission rack, two the linear guide and two the slider group are respectively one-to-one sliding fit, two the slider group is commonly installed on the sliding plate, transmission motor is installed on the sliding plate, the transmission gear is installed on the output shaft of transmission motor, and the lifting frame is installed on the sliding plate.

[0008] The frame includes support frame and mounting frame installed at the first side of the support frame, and the transmission device is installed in the mounting frame.

[0009] The mounting frame is a square frame.

[0010] The support frame includes two oppositely arranged support portions and a mounting portion installed between the two support portions, and the mounting frame is installed at the first side of the mounting portion, and each of the two support portions includes a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod.

[0011] In each of the support portions, the first connecting rod is arranged above and below, the second connecting rod is arranged extending along the first side of the mounting portion towards the opposite second side, and the two ends of the first connecting rod are fixedly connected to the mounting portion and the second connecting rod, respectively, the two ends of the third connecting rod are fixedly connected to the mounting portion and the second connecting rod, respectively, and the two ends of the fourth connecting rod are fixedly connected to the first connecting rod and the second connecting rod, respectively.

[0012] The sliding plate is provided outside the first side of the frame, and the sliding plate is in the shape of n, and the two slider groups are respectively installed on the upper side and the lower side of the sliding plate, and the two slider groups are oppositely arranged, wherein each of the two slider groups includes at least one sliding block.

[0013] An installation hole is formed in the sliding plate, a bearing is embedded in the installation hole, the output shaft of the transmission motor is installed in the bearing, and the output shaft of the transmission motor extends into the frame.

[0014] The slurry shell manufacturing device further comprises a sand spraying machine for spraying sand downward, which is installed outside the frame body and located in the path of movement of the clamping device.

[0015] With the above structure, the present utility model has the following beneficial effects:

[0016] 1、The present utility model installs the transmission device on one side of the frame body, so that the lifting device and the clamping device are respectively side-mounted on the rack, and then the two sliding block groups are respectively matched with the sliding of the corresponding linear guide rails to support the lifting frame body of the lifting device, thereby supporting the clamping device, so that the clamping device is no longer suspended on the frame body but supported by two side fulcrums, thereby increasing the rigidity of the clamping device and ensuring the stability of the clamping device structure; in combination with the mutual cooperation of the transmission gear and the transmission rack, the clamping device is driven to move horizontally by the lifting device, and the transmission gear and the transmission rack are both metal rigid parts, which further increases the rigidity of the clamping device and avoids the rupture of the workpiece (such as a wax mold) on the clamping device due to vibration or shaking during the operation of the present utility model.

[0017] 2、The frame body of the present utility model is supported by the transmission device of the gear and the rack, which drives the clamping device to move horizontally, and drives the clamping device to move up and down in combination with the lifting device, compared with the prior art in which the clamping device is suspended between the two linear guide rails, the clamping device is side-mounted, the center of gravity of the lifting device and the clamping device is lowered, the overall size of the equipment is small, the stability of the structure of the present utility model is ensured, and the present utility model is convenient to disassemble and assemble.

[0018] 3、The present utility model adopts the setting of the sand spraying machine, compared with the commonly used floating sand machine, the sand spraying machine sprays sand downward, thereby reducing the resistance to the workpiece and further ensuring that the workpiece is not easy to break. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the slurry shell manufacturing device in the present utility model.

[0020] Figure 2 It is an assembly schematic view of the mounting frame and the lifting device in the present utility model.

[0021] Figure 3 It is an assembly schematic view of the mounting frame and the transmission device in the present utility model.

[0022] Figure 4 It is a use schematic view of the slurry shell manufacturing device in the present utility model.

[0023] In the drawings:

[0024] 1a-lifting device; 11a-lifting frame body; 2a-clamping device;

[0025] 100 - frame body; 11 - mounting frame; 12 - mounting portion; 13 - first connecting rod; 14 - second connecting rod; 15 - third connecting rod; 16 - fourth connecting rod;

[0026] 1 - sliding plate; 21 - transmission rack; 22 - transmission gear; 31 - linear guide rail; 32 - sliding block; 4 - transmission motor; 41 - bearing with seat; 5 - sprinkling machine; 6 - pulp bucket. DETAILED DESCRIPTION

[0027] In order to further explain the technical scheme of the utility model, the utility model will be described in detail through specific embodiments.

[0028] The utility model discloses a shell forming machine, which is improved on the basis of a conventional shell forming machine, as shown in the drawings, Figure 1 The existing shell forming machine comprises a pulp shell forming device, which comprises a lifting device 1a and a clamping device 2a. The clamping device 2a is installed on the lifting frame body 11a of the lifting device 1a in a lifting manner, and is used to realize upward and downward lifting through the lifting device 1a. The lifting frame body 11a can realize transverse sliding through the transmission device described below.

[0029] In the embodiment, the lifting device 1a described above adopts a commonly used lifting device on the existing shell forming machine, for example, the Z-axis assembly recorded in the Chinese patent with the publication number CN217964664U and the name "a pulp device applied to a precision casting wax mold".

[0030] In the embodiment, the clamping device 2a described above adopts a commonly used clamping device on the existing shell forming machine, for example, the clamping assembly recorded in the Chinese patent with the publication number CN217964664U and the name "a pulp device applied to a precision casting wax mold". The assembly mode between the clamping device 2a and the lifting device 1a adopts a conventional assembly mode, for example, the assembly mode recorded in the above-mentioned Chinese patent.

[0031] As shown in the drawings, Figures 1-4 The pulp shell forming device further comprises a frame body 100 and a transmission device for driving the lifting device 1a to move transversely. For the convenience of description, the direction shown in the drawings is the reference direction of the utility model, and the side where the lifting device 1a is located is the front side of the frame, and the opposite side is the rear side. The length direction of the frame is the left-right direction, and the transverse direction of the embodiment is the left-right direction. Figure 1 The improvement of the utility model lies in that, as shown in the drawings,

[0032] Figures 1-4 ​As shown, the transmission device is a gear rack transmission device, which is arranged at the front side of the frame body 100, so that the lifting device 1a and the clamping device 2a are respectively transmissionally installed at the front side of the frame body 100; the transmission device comprises a sliding plate 1, a transmission rack 21 and a transmission gear 22 which are in engagement with each other, two linear guides 31 and two sliding blocks, the transmission rack 21 is arranged in the frame body 100 along the lateral direction of the frame body 100, the two linear guides 31 are both laid along the lateral direction of the frame body 100 and are respectively installed in the frame body 100, and the two linear guides 31 are respectively arranged at the upper side and the lower side of the transmission rack 21, wherein the two linear guides 31 and the two sliding blocks are respectively in one-to-one sliding fit, and the two sliding blocks are fixedly installed on the same sliding plate 1, and the sliding plate 1 is installed at the front side of the frame body 100, the front side of the sliding plate 1 is provided with a transmission motor 4, the output shaft of the transmission motor 4 penetrates through the sliding plate 1 and extends into the frame body 100, and the transmission gear 32 is tightly sleeved on the output shaft of the transmission motor 4, and the lifting frame 11a of the lifting device 1a is installed on the sliding plate 1.

[0033] Specifically, as shown in the drawings, Figures 1-3 As shown, the frame body 100 comprises a support frame and a mounting frame 11, the mounting frame 11 is installed at the front side of the support frame, the mounting frame 11 is a square frame, and the transmission device is installed in the mounting frame 11; the support frame comprises a mounting portion 12 and two oppositely arranged support portions, the mounting portion 12 is installed between the two support portions and is located at the upper side of the two support portions, that is, the two support portions are respectively arranged at the left side and the right side of the mounting portion 12, in this embodiment, the front side of the support frame is the front side of the mounting portion 12, that is, the mounting frame 11 is installed at the front side of the mounting portion 12, and the two are preferably overlapped with each other, wherein the support frame is used to place the entire device on a flat ground such as a base, a pedestal or the ground.

[0034] Further, the two support portions each comprise a first link 13, a second link 14, a third link 15 and a fourth link 16, the two support portions are identical in structure, thus taking the left support portion as an example for description, the first link 13, the second link 14 and the third link 15 and the first link 13, the second link 14 and the fourth link 16 are enclosed into triangular shapes of stable structure respectively, so as to ensure the stability of the support frame as a whole, thereby ensuring the stability of the whole frame body 100 structure; in detail, the first link 13 is arranged up and down, the second link 14 is arranged front and back, and the first link 13 and the second link 14 are arranged perpendicular to each other, the upper end of the first link 13 is fixedly connected to the left side of the mounting portion 12, the lower end of the first link 13 is fixedly connected to the second link 14, and the lower end of the first link 13 is located at the middle back of the second link 14, the upper end of the third link 15 is fixedly connected to the rear side of the left end of the mounting portion 12, the lower end of the third link 15 is fixedly connected to the rear end of the second link 14, the upper end of the fourth link 16 is fixedly connected to the middle or lower middle of the first link 13, and the lower end of the fourth link 16 is fixedly connected to the front end of the second link 14, the second link 16 plays a role of further reinforcement; in the embodiment, the connection between the two links and the connection between the links and the frame can be realized by using the existing conventional connection structure, for example, the two can be installed together by using conventional methods such as welding, clamping or screw locking.

[0035] Further, in the transmission device, the sliding plate 1 is installed on the front side of the mounting frame 11, and the left side or the right side of the sliding plate 1 is provided with a mounting hole, a bearing or a bearing with a seat is embedded in the mounting hole, and the specific selection is made according to the actual situation, and in the embodiment, the bearing with a seat 41 is arranged in the mounting hole, the transmission motor is located on the front side of the sliding plate 1, and the output shaft of the transmission motor 4 passes through the bearing in the bearing with a seat 41 and extends into the mounting frame 11, so that the transmission gear 22 on the transmission motor 4 and the transmission rack 21 in the mounting frame 1 are engaged with each other, wherein the transmission rack 21 and the two linear guides 31 are arranged parallel to each other; in the embodiment, the lifting frame body 11a of the lifting device 1a is fixedly installed on the sliding plate 1, and the lifting frame body 11a can be fixedly installed on the upper side and the lower side of the sliding plate 1 by using a conventional method, for example, the two are locked together by using the cooperation between the bolts and the threaded holes, so as to ensure that the lifting device 1a is fastened on the sliding plate 1.

[0036] Further, the sliding plate 1 is in the shape of n, that is, the sliding plate 1 comprises a sliding installation part and two opposite sliding matching parts which are installed with each other, the two sliding matching parts are respectively fixedly installed on the upper side and the lower side of the sliding installation part, the sliding matching part and the installation installation part are installed together in the existing conventional way, for example, the two are locked together by bolt and thread hole cooperation; wherein, the two sliding block groups and the two sliding matching parts are respectively one-to-one matched, the two linear guides 31 are all arranged upward, one sliding block group is slidingly installed on the upper side of the sliding matching part, and the other sliding block group is slidingly installed on the lower side of the sliding matching part; in this way, through the mutual sliding cooperation of the two sliding block groups and the corresponding linear guides 31, the sliding plate 1 has two side supporting points, so that the sliding plate 1 moves in the transverse direction, thereby driving the clamping device to move in the transverse direction.

[0037] Further, the two sliding block groups each comprise at least one sliding block 32, and in the embodiment, two sliding blocks 32 are taken as an example for description in each sliding block group, in each sliding block group, the two sliding blocks 32 are arranged in sequence in the transverse direction and located on the left side and the right side of the sliding matching part of the sliding plate 1; in this way, the sliding plate 1 is slidingly matched with the corresponding linear guides 31 through the four sliding blocks 32.

[0038] Further, the slurry shell making device further comprises a sand spraying machine 5 for downward sand spraying, the sand spraying machine is installed on the outside of the frame body 100 and located on the front of the frame body 100, and the sand spraying machine 5 is located in the transverse and lifting path of the clamping device 2a, and in the embodiment, the sand spraying machine 5 adopts the sand spraying machine which is already sold on the market; in this way, the sand spraying machine 5 sprays sand downward, when the clamping device 2a clamps the workpiece to enter the sand spraying machine 5, the workpiece is subjected to the downward sand spraying force, so that the workpiece is subjected to smaller resistance, and the workpiece is further prevented from being broken.

[0039] The transmission device works, namely the transmission motor 4 is started, the output shaft of the transmission motor 4 rotates to drive the transmission gear 22 on it to rotate, the transmission gear 22 and the transmission rack 21 are mutually engaged, the sliding plate 1 moves transversely, the two sliding block groups on the sliding plate 1 are respectively matched with the corresponding linear guide rails 31 in the transverse movement process, therefore the sliding plate 1 has two fulcrums of upper side and lower side, the transverse movement of the sliding plate 1 drives the transverse movement of the lifting device 1a, in turn makes the clamping device 2a transversely move, ensures the stability of the structure of the sliding plate 1, and the lifting device 1a and the clamping device 2a are all arranged on the front side of the mounting frame 11, namely the front side of the frame body 100, so that the lifting device 1a and the clamping device 2a are no longer suspended, and the two form side mounting, the rigidity of the clamping device 2a is increased; the clamping device 2a is moved into the pulp barrel 6 under the drive of the transmission device and the lifting device 1a respectively, the clamping device 2a clamps the workpiece into the pulp barrel 6, after completing the pulp sticking, is driven into the sand spraying area of the sand spraying machine 5 through the lifting device 1a and the transmission device respectively to spray sand, so as to complete the processes of pulp sticking and sand sticking.

[0040] The above is only the preferred embodiment of the present embodiment, and any equivalent change and modification within the scope of the claims of the present utility model should belong to the scope of the claims of the present utility model.

Claims

1. A shell molding machine comprising a slurry coating device, the slurry coating device comprising a lifting device and a clamping device, the clamping device being mounted in a liftable manner on a lifting frame of the lifting device; characterized in that: The slurry shell forming device further comprises a frame body and a transmission device installed on the first side of the frame body, the transmission device comprises a sliding plate, a transmission rack and a transmission gear in mesh with each other, two linear guides and two slider groups, the transmission rack is installed in the frame body along the length direction of the frame body, the two linear guides are respectively installed in the frame body along the length direction of the frame body, and the two linear guides are respectively arranged on the two sides of the transmission rack, the two linear guides are respectively in one-to-one sliding fit with the two slider groups, the two slider groups are commonly installed on the sliding plate, a transmission motor is installed on the sliding plate, the transmission gear is installed on the output shaft of the transmission motor, and the lifting frame body is installed on the sliding plate.

2. A shell mo(u)lding machine according to claim 1, c h a r a c t e r i s e d in that: The frame body comprises a support frame and a mounting frame installed on the first side of the support frame, and the transmission device is installed in the mounting frame.

3. A shell mo(u)lding machine according to claim 2, c h a r a c t e r i s e d in that: The mounting frame is a square frame.

4. A shell mo(u)lding machine according to claim 3, c h a r a c t e r i s e d in that: The support frame comprises two oppositely arranged support portions and a mounting portion installed between the two support portions, the mounting frame is installed on the first side of the mounting portion, and each of the two support portions comprises a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod.

5. A shell mo(u)lding machine according to claim 4, c h a r a c t e r i s e d in that: In each of the support portions, the first connecting rod is arranged above and below, the second connecting rod is arranged to extend along the first side of the mounting portion towards the opposite second side, and the two ends of the first connecting rod are respectively fixedly connected to the mounting portion and the second connecting rod, the two ends of the third connecting rod are respectively fixedly connected to the mounting portion and the second connecting rod, and the two ends of the fourth connecting rod are respectively fixedly connected to the first connecting rod and the second connecting rod.

6. A shell mo(u)lding machine according to any one of claims 1 to 5, c h a r a c t e r i s e d in that: The sliding plate is arranged outside the first side of the frame body, and the sliding plate is in the shape of an n, the two slider groups are respectively installed on the upper side and the lower side of the sliding plate, and the two slider groups are oppositely arranged, wherein each of the two slider groups comprises at least one sliding block.

7. A shell making machine according to claim 6, wherein: An installation hole is formed in the sliding plate, a bearing is embedded in the installation hole, the output shaft of the transmission motor is installed in the bearing, and the output shaft of the transmission motor extends into the frame body.

8. A shell mo(u)lding machine according to any one of claims 1 to 5, c h a r a c t e r i s e d in that: The slurry shell forming device further comprises a sand blasting machine for downward sand blasting, the sand blasting machine is installed outside the frame body and located in the path of movement of the clamping device.

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