Demoulding device for weight casting

Abstract

The invention provides a demolding device for weight casting, and belongs to the technical field of weight machining, the demolding device comprises two sets of clamping arms, a distance adjusting mechanism, two sets of end face splitting mechanisms, a peripheral face splitting mechanism and a driving assembly, the two sets of clamping arms are each provided with a rotating clamping part, and the two sets of clamping parts are oppositely arranged; the distance adjusting mechanism is used for adjusting the distance between the two sets of clamping parts, the two sets of end face splitting mechanisms are movably arranged on the two sets of clamping parts respectively and used for splitting sand grain layers on the upper and lower end faces of a weight when the two sets of clamping parts clamp the upper and lower end faces of the weight, and the circumferential surface splitting mechanism is used for splitting sand grain layers on the circumferential surface of the weight. And the driving assembly is used for driving the at least one group of clamping parts to rotate and driving the peripheral surface splitting mechanism to be close to and away from the peripheral surface of the weight. By reducing manual intervention, the demolding efficiency can be improved, and it is ensured that the surface of the weight has high surface smoothness.

Description

Technical Field

[0001] The present invention relates to the technical field of weight processing, and particularly to a demoulding device for weight casting. Background Art

[0002] In the field of weighing instrument manufacturing, weights, as standard measuring instruments, generally adopt a cylindrical structure with a round head. Due to the characteristics of low cost and strong forming adaptability of the sand casting process, it is widely used in the mass production of weights. Among them, the quality of the demoulding process has a significant impact on effectively removing the residual sand grains on the surface of the weight.

[0003] In the traditional demoulding process, the cast weight first needs to be naturally cooled to room temperature in the sand box, and then the sand box is knocked manually for demoulding. However, due to the temperature gradient formed by natural cooling, the sand mold will generate shrinkage stress, resulting in a physical adsorption effect between the sand mold and the casting surface, forming a dense sand grain layer, so that a clean surface casting cannot be directly obtained after demoulding.

[0004] Currently, the dense sand grain layer on the surface of the weight is mainly removed by manual scraping. However, this method not only has the problems of high labor intensity and low demoulding efficiency, but also easily causes frictional damage to the surface of the weight, thereby affecting the surface finish of the weight. In addition, the consistency of manual operation is difficult to guarantee, which may lead to large quality differences between different batches of weights. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a demoulding device for weight casting, aiming to improve the demoulding efficiency by reducing manual intervention and ensure that the surface of the weight has a high surface finish.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A demoulding device for weight casting includes two groups of clamping arms, a distance adjusting mechanism, two groups of end face splitting mechanisms, a circumferential face splitting mechanism, and a driving component. Each of the two groups of clamping arms is provided with a rotating clamping part, and the two clamping parts are arranged opposite to each other. The distance adjusting mechanism is used to adjust the distance between the two clamping parts. The two groups of end face splitting mechanisms are respectively movably arranged on the two clamping parts, and are used to split the sand grain layer on the upper and lower end faces of the weight when the two clamping parts clamp the upper and lower end faces of the weight. The circumferential face splitting mechanism is used to split the sand grain layer on the circumferential face of the weight. The driving component is used to drive at least one of the clamping parts to rotate, and at the same time drive the circumferential face splitting mechanism to approach and move away from the circumferential face of the weight.

[0007] In addition, according to the above demoulding device for weight casting of the present invention, the following additional technical features may also be provided:

[0008] Furthermore, the demoulding device for weight casting further includes a frame. Both of the two clamping parts are axially movably limited on the frame along the axis of the weight. Straight racks are provided on both of the two clamping arms, and the two straight racks are arranged oppositely. The distance adjusting mechanism includes a gear, and the gear is meshed and connected between the two straight racks.

[0009] Furthermore, the distance adjusting mechanism further includes a handle. The handle is provided with a rod part rotatably connected to the frame, and the rod part is connected to the gear.

[0010] Furthermore, a through hole axially arranged along the axis of the weight is provided on the frame. Both of the two clamping parts include a circular shaft rod, a conical head, and a first elastic mechanism. The circular shaft rod is arranged in the through hole, one end of the circular shaft rod is rotatably connected to the clamping arm, a receiving cavity is arranged in the conical head, an opening is arranged at the tail of the conical head, and the opening is communicated with the receiving cavity. The other end of the circular shaft rod is axially movably arranged in the receiving cavity along the axis of the conical head through the opening and is rotationally limitedly connected to the conical head. The end face splitting mechanism includes at least a pair of oppositely arranged rotating arms, and the rotating arms are rotatably arranged on the conical head. The driving component is in transmission connection with at least one of the circular shaft rods. The first elastic mechanism is used to provide a restoring force for preventing the circular shaft rod from extending into the receiving cavity. When the distance adjusting mechanism drives the circular shaft rod to axially move in the receiving cavity along the axis of the conical head, the two rotating arms rotate to approach and move away from each other.

[0011] Furthermore, an avoidance groove is arranged on the circumferential surface of the conical head. A straight rack block is arranged on the circular shaft rod. The rotating arm is provided with a gear part. The gear part is rotatably connected to the conical head and is located in the avoidance groove. One end of the straight rack block is axially slidably arranged in the avoidance groove and is meshed with the gear part.

[0012] Furthermore, the driving component includes a driving motor and a gear train transmission mechanism. The driving motor is fixedly arranged on the frame. The driving shaft of the driving motor is axially movably connected to the circular shaft rod and rotationally limits the circular shaft rod. The driving shaft of the driving motor drives the end face splitting mechanism to approach and move away from the circumferential surface of the weight through the gear train transmission mechanism.

[0013] Furthermore, a sliding groove is arranged on the end face of the circular shaft rod far away from the conical head. An axially arranged key groove is arranged on the inner wall of the sliding groove. A key block matched with the key groove is arranged on the driving shaft of the driving motor.

[0014] Furthermore, the circumferential surface splitting mechanism includes a blade frame, a second elastic mechanism, a one-way screw, and a special-shaped shaft rod. The blade frame is horizontally movably connected to the frame. The second elastic mechanism is used to provide a restoring force to prevent the blade frame from approaching the circumference of the weight. The one-way screw and the blade frame form a wedge-shaped fit in the vertical direction. The one-way screw is threadedly connected to the frame. The special-shaped shaft rod is rotatably arranged on the frame. The special-shaped shaft rod is axially movably connected to the one-way screw rod and forms a rotation limit. The special-shaped shaft rod is transmission-connected to the gear train transmission mechanism; wherein, when the special-shaped shaft rod rotates forward and reversely, the one-way screw rod moves up and down relative to the special-shaped shaft rod to drive the blade frame to approach and move away from the circumference of the weight.

[0015] Furthermore, the demoulding device for weight casting also includes a blowing mechanism, which is connected to the gear transmission mechanism to spray high-pressure gas back and forth in the vertical direction.

[0016] Furthermore, the blowing mechanism includes a reciprocating screw mechanism, a nozzle, and a gas delivery device. The bidirectional screw of the reciprocating screw mechanism is rotatably arranged on the frame, the nozzle is arranged on a slider of the reciprocating screw mechanism, and the gas delivery device is used to deliver high-pressure gas to the nozzle.

[0017] The beneficial effects of the present invention include at least: first, adjusting the distance between the two groups of clamping parts through a distance adjustment mechanism, so that the clamping parts are close to the weight until the upper and lower end faces of the weight are clamped, and then the sand layers on the upper and lower end faces of the weight are split respectively through two groups of end face splitting mechanisms, and then the weight is driven to rotate through a driving component, and finally the circumferential surface splitting mechanism is driven by the driving component to approach the circumferential surface of the weight. When the circumferential surface splitting mechanism contacts the sand layer on the circumferential surface of the rotating weight, the sand layer is destroyed by the circumferential surface splitting mechanism. Compared with the traditional manual scraping method, the demolding efficiency is high, and at the same time, the operating standards for splitting the sand layer are unified, so that the processing quality consistency of different batches of weights is high; in addition, during the entire process, only the area where the upper and lower end faces of the weight are in contact with the clamping part is prone to surface friction damage, which can ensure that the weight has a high surface finish. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a demoulding device for weight casting from a first perspective in one embodiment of the present invention;

[0019] Figure 2 It is a structural schematic diagram of a demoulding device for weight casting in one embodiment of the present invention from a second viewing angle;

[0020] Figure 3 It is a schematic structural diagram of a demoulding device for weight casting according to an embodiment of the present invention from a third viewing angle;

[0021] Figure 4Exploded view of the clamping part in an embodiment of the present invention;

[0022] Figure 5 is Figure 4 partial enlarged view at A in

[0023] Figure 6 Assembly drawing of the drive motor and the circular shaft rod in an embodiment of the present invention;

[0024] Figure 7 is Figure 6 partial enlarged view at B in

[0025] Figure 8 Structural schematic diagram of the conical head in an embodiment of the present invention;

[0026] Figure 9 Assembly drawing of the one - way lead screw and the special - shaped shaft rod in an embodiment of the present invention;

[0027] Figure 10 is Figure 9 partial enlarged view at C in

[0028] Description of main component symbols:

[0029] Clamping arm 100, straight rack 110, circular shaft rod 120, straight rack block 121, sliding groove 122, keyway 1221, conical head 130, accommodation cavity 131, avoidance groove 132, opening 132, first elastic mechanism 140, distance adjustment mechanism 200, gear 210, handle 220, rotating arm 300, gear part 310, circumferential splitting mechanism 400, tool rest 410, connecting rod 411, boss 4111, inclined groove 412, second elastic mechanism 420, one - way lead screw 430, slider 431, slot 432, special - shaped shaft rod 440, drive assembly 500, drive motor 510, key block 511, gear train transmission mechanism 520, weight 600, frame 700, through - hole 710, telescopic tube 800, blowing mechanism 900, reciprocating lead screw mechanism 910, spray head 920;

[0030] The following specific embodiments will further illustrate the present invention in conjunction with the above - mentioned drawings. Specific embodiments

[0031] For ease of understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are only for the purpose of illustration.

[0033] Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as commonly understood by those skilled in the technical field to which this invention belongs. The terms used in the description of this invention in this article are only for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" used in this article includes any and all combinations of one or more of the related listed items.

[0034] Please refer to Figures 1 to 10 , a demoulding device for casting a weight 600 provided by the present invention, comprising two groups of clamping arms 100, a distance adjusting mechanism 200, two groups of end face splitting mechanisms, a circumferential surface splitting mechanism 400, and a driving assembly 500. Specifically, a rotating clamping part is provided on each of the two groups of clamping arms 100, and the two groups of clamping parts are arranged oppositely. When in use, the two groups of clamping parts respectively clamp the upper end face and the lower end face of the weight 600. When the distance adjusting mechanism 200 is in a working state, the distance adjusting mechanism 200 adjusts the distance between the two groups of clamping parts so that the clamping parts can approach and move away from the corresponding end faces of the weight 600. The two groups of end face splitting mechanisms are respectively movably arranged on the two groups of clamping parts. When the two groups of clamping parts clamp the upper and lower end faces of the weight 600, the two groups of end face splitting mechanisms are in a working state and respectively split the sand grain layers on the upper and lower end faces of the weight 600. When the circumferential surface splitting mechanism 400 is in a working state, the circumferential surface splitting mechanism 400 splits the sand grain layer on the circumferential surface of the weight 600. When the driving assembly 500 is in a working state, since when one of the clamping parts rotates on the clamping arm 100, it will drive the other clamping part to rotate on the other clamping arm 100 through the weight 600 body, the driving assembly 500 can drive only one of the clamping parts to rotate, and of course it can also drive the other clamping part to rotate at the same time. In addition, when the clamping part drives the weight 600 to rotate, the driving assembly 500 also drives the circumferential surface splitting mechanism 400 to approach and move away from the circumferential surface of the weight 600.

[0035] In this embodiment, first, the distance between the two clamping parts is adjusted by the distance adjusting mechanism 200, so that the clamping parts approach the weight 600 until the upper and lower end faces of the weight 600 are clamped. Then, the sand grain layers on the upper and lower end faces of the weight 600 are split by the two end face splitting mechanisms respectively. Next, the weight 600 is driven to rotate by the driving assembly 500. Finally, the driving assembly 500 drives the circumferential splitting mechanism 400 to approach the circumferential surface of the weight 600. When the circumferential splitting mechanism 400 contacts the sand grain layer on the circumferential surface of the rotating weight 600, the sand grain layer is damaged by the circumferential splitting mechanism 400. It can be understood that when it is necessary to replace the next weight 600, the driving assembly 500 needs to drive the circumferential splitting mechanism 400 away from the circumferential surface of the weight 600 to facilitate clamping the weight 600.

[0036] In some alternative embodiments, as Figures 1 to 3 shown, the demoulding device for casting the weight 600 further includes a frame 700. The two clamping parts are axially movably limited on the frame 700. Straight racks 110 are provided on the two clamping arms 100. The two straight racks 110 are arranged oppositely. The distance adjusting mechanism 200 includes a gear 210, and the gear 210 is meshed and connected between the two straight racks 110. In this embodiment, when the gear 210 is rotated, the gear 210 drives the two straight racks 110 to move away from and close to each other, and further enables the two clamping parts on the two clamping arms 100 to move away from and close to each other, so as to achieve the purpose of adjusting the distance between the two clamping parts.

[0037] In some alternative embodiments, as Figures 1 to 3 shown, the distance adjusting mechanism 200 further includes a handle 220. The handle 220 is provided with a rod portion rotatably connected to the frame 700, and the rod portion is connected to the gear 210.

[0038] In this embodiment, by screwing the handle 220, the gear 210 can be conveniently rotated.

[0039] In some alternative embodiments, as Figures 1 to 6As shown, the frame 700 is provided with a through hole 710 arranged along the axial direction of the weight 600, and the two groups of clamping parts include a circular shaft 120, a conical head 130, and a first elastic mechanism 140. Specifically, the circular shaft 120 is inserted into the through hole 710, and the circular shaft 120 can slide up and down and rotate in the through hole 710. One end of the circular shaft 120 is rotatably connected to the clamping arm 100, and the circular shaft 120 can rotate relative to the clamping arm 100 under the action of an external force. The interior of the conical head 130 is provided with a receiving cavity 131, and the head of the conical head 130 is used to abut the upper and lower end faces of the weight 600. It can be understood that in order to avoid the head of the conical head 130 from causing greater damage to the end face of the weight 600, the head of the conical head 130 can be set to a blunt shape, and such a design can disperse stress and protect the end face of the weight 600. The tail of the conical head 130 is provided with an opening 132, and the opening 132 is communicated with the accommodating chamber 131. The other end of the circular shaft 120 extends into the accommodating chamber 131 through the opening 132, and the end of the circular shaft 120 is movably arranged in the accommodating chamber 131 along the axial direction of the conical head 130, and the end of the circular shaft 120 is connected to the conical head 130 in a rotational limit connection, so that when the circular shaft 120 rotates on the frame 700, the circular shaft 120 can rotate with the conical head 130 by means of rotational limit. The end face splitting mechanism includes at least one pair of relatively arranged rotating arms 300, which are rotatably arranged on the conical head 130, and the driving assembly 500 is transmission-connected with at least one group of circular shafts 120. When the driving assembly 500 is in working state, since one set of circular shafts 120 rotates on the clamping arm 100, the other set of circular shafts 120 will be driven to rotate on the other clamping arm 100 through the weight 600 body, so the driving assembly 500 can only drive one set of circular shafts 120 to rotate, and of course, it can also drive the other set of circular shafts 120 to rotate at the same time. The first elastic mechanism 140 is used to provide a restoring force to prevent the circular shafts 120 from extending into the accommodating cavity 131.

[0040] In some optional embodiments, such as Figure 1 , Figure 9 As shown, the first elastic mechanism 140 is a spring, which is sleeved on the circular shaft 120 and is located between the frame 700 and the tail of the conical head 130. When the conical head 130 is not in contact with the weight 600, the spring is in a natural state; when the conical head 130 is in contact with the weight 600 and the circular shaft 120 extends into the accommodating cavity 131, the spring is compressed, and the spring generates a reverse restoring force acting on the conical head 130, so that the conical head 130 is tightly pressed against the upper and lower end surfaces of the weight 600.

[0041] In some optional embodiments, such as Figure 5 , Figure 6As shown, a telescopic tube 800 is provided between the frame 700 and the tail of the conical head 130. One end of the telescopic tube 800 is fixedly connected to the frame 700, and the other end of the telescopic tube 800 is rotatably connected to the tail of the conical head 130. In this embodiment, by providing the telescopic tube 800, dust and sand grains can be prevented from entering the area where the spring is installed, affecting the movement of the spring, the circular shaft rod 120, and the conical head 130.

[0042] In this embodiment, when the distance adjustment mechanism 200 drives the circular shaft rod 120 to move axially along the conical head 130 in the accommodation cavity 131, the two sets of swing arms 300 rotate and approach and move away from each other. When the two sets of swing arms 300 rotate from the state of approaching each other to the state of moving away from each other, the swing arms 300 can split the sand grain layer on the upper and lower end faces of the weight 600. It can be understood that if the swing arms 300 cannot split the sand grain layer on the upper and lower end faces of the weight 600 alone once, the distance adjustment mechanism 200 can be used to drive the two sets of swing arms 300 to rotate forward and backward multiple times, so that the swing arms 300 can squeeze the sand grain layer inside and outside multiple times to break the sand grain layer. After that, when the driving assembly 500 drives the circular shaft rod 120 to rotate, the rotating swing arms 300 can further expand the cracking range of the sand grain layer.

[0043] In some alternative embodiments, such as Figure 5 、 Figure 8 As shown, a relief groove 132 is provided on the circumferential surface of the conical head 130. One end of the circular shaft rod 120 extending into the accommodation cavity 131 is provided with a straight rack block 121. A gear portion 310 is provided on the swing arm 300. The gear portion 310 is rotatably connected to the conical head 130 and is located in the relief groove 132. The two ends of the straight rack 110 provided on the straight rack block 121 slide axially along the conical head 130 in the relief groove 132, and the straight racks 110 at both ends of the straight rack block 121 are respectively engaged with the two gear portions 310. When the circular shaft rod 120 moves axially in the accommodation cavity 131 along the conical head 130, the two ends of the straight rack block 121 slide up and down in the relief groove 132, so that the gear portion 310 drives the swing arm 300 to rotate forward and backward on the conical head 130, thereby achieving the purpose of the two sets of swing arms 300 approaching and moving away from each other. In addition, since the straight rack block 121 is fixedly connected to the circular shaft rod 120 and the two ends of the straight rack block 121 extend into the relief groove 132, a rotational limit is generated between the straight rack block 121 and the conical head 130. At this time, the straight rack block 121 cannot rotate relative to the conical head 130 alone, but the straight rack block 121 drives the conical head 130 to rotate together with the rotation of the circular shaft rod 120.

[0044] In some alternative embodiments, such as Figure 3As shown, the driving assembly 500 includes a driving motor 510 and a gear train transmission mechanism 520. The driving motor 510 is fixedly arranged on the frame 700. The driving shaft of the driving motor 510 is axially movably connected to the circular shaft rod 120. At this time, the circular shaft rod 120 can move relative to the driving shaft, and the moving direction is along the axial direction of the driving shaft of the driving motor 510. At the same time, the driving shaft of the driving motor 510 rotationally limits the circular shaft rod 120. At this time, the circular shaft rod 120 cannot rotate independently relative to the driving shaft of the driving motor 510. The driving shaft of the driving motor 510 drives the circumferential splitting mechanism 400 to approach and move away from the circumferential surface of the weight 600 through the gear train transmission mechanism 520. Optionally, the gear train transmission mechanism 520 can adopt a chain wheel transmission mechanism or a belt wheel transmission mechanism.

[0045] In some alternative embodiments, in order to save the number of driving motors 510, as Figure 6 shown, a sliding groove 122 is provided on the end surface of the end of the circular shaft rod 120 at the bottom away from the conical head 130. A key groove 1221 arranged along the axial direction of the circular shaft rod 120 is provided on the inner wall of the sliding groove 122. A key block 511 cooperating with the key groove 1221 is provided on the driving shaft of the driving motor 510. In this embodiment, when the key block 511 cooperates with the key groove 1221, the circular shaft rod 120 can move axially relative to the frame 700. At the same time, when the driving motor 510 works, the driving motor 510 can also drive the circular shaft rod 120 to rotate together.

[0046] Preferably, in some alternative embodiments, as Figure 1 、 Figure 2As shown, the peripheral surface splitting mechanism 400 includes a blade frame 410, a second elastic mechanism 420, a one-way screw rod 430, and a special-shaped shaft rod 440. Specifically, the shape of the blade portion of the blade frame 410 matches the side shape of the weight 600, and the blade frame 410 is horizontally slidably connected to the frame 700 through a connecting rod 411. The second elastic mechanism 420 is used to provide a restoring force to prevent the blade frame 410 from approaching the peripheral surface of the weight 600. The blade frame 410 is provided with an inclined groove 412, and the one-way screw rod 430 is threadedly connected to the frame 700 in the vertical direction. The one-way screw rod 430 is provided with a slider 431 matching the inclined groove 412, and the slider 431 is rotatably connected to the upper end of the one-way screw rod 430, and the slider 431 is slidably arranged in the inclined groove 412, so as to form a wedge fit in the vertical direction. The special-shaped shaft 440 is rotatably arranged on the frame 700, and a slot 432 is axially arranged at the lower end of the one-way screw rod 430, and the shape of the slot 432 matches the radial cross-sectional shape of the special-shaped shaft 440. For example, the shape of the slot 432 and the radial cross-sectional shape of the special-shaped shaft 440 are both hexagonal, so that the one-way screw rod 430 and the special-shaped shaft 440 cannot rotate relative to each other. The upper end of the special-shaped shaft 440 is slidably inserted into the slot 432, and at this time, when the one-way screw rod 430 rotates, the one-way screw rod 430 can move up and down relative to the special-shaped shaft 440. The special-shaped shaft 440 is connected to the gear transmission mechanism 520. When the driving motor 510 drives the special-shaped shaft 440 to rotate forward and reverse through the gear transmission mechanism 520, the one-way screw rod 430 can move up and down relative to the special-shaped shaft 440, thereby driving the slider 431 to move up and down. The up and down movement of the slider 431 drives the blade frame 410 to move left and right, thereby achieving the purpose of the blade frame 410 approaching and moving away from the circumference of the weight 600.

[0047] In some optional embodiments, such as Figure 2 , Figure 9 As shown, the second elastic mechanism 420 is a spring, which is sleeved on the connecting rod 411, and the connecting rod 411 is provided with a boss 4111, and the spring is located between the frame 700 and the boss 4111. When the blade frame 410 moves to the left, the spring is stretched to generate a reverse restoring force acting on the connecting rod 411. When the blade of the blade frame 410 encounters the uneven surface of the weight 600, the second elastic mechanism 420 can play a certain buffering role.

[0048] In some optional embodiments, such as Figure 1 , Figure 3 As shown, the demoulding device for casting the weight 600 further includes a blowing mechanism 900, which is transmission-connected to the gear train transmission mechanism 520 to reciprocately blow high-pressure gas in the vertical direction. In this embodiment, by providing the blowing mechanism 900, the sand layer broken by the end face splitting mechanism and the peripheral face splitting mechanism 400 can be blown away, and the sand on the surface of the rotating weight 600 can also be blown away.

[0049] In some alternative embodiments, such as Figure 1 , Figure 3 shown, the blowing mechanism 900 includes a reciprocating lead screw mechanism 910, a nozzle 920, and a gas delivery device (not shown in the drawings). Specifically, the bidirectional lead screw of the reciprocating lead screw mechanism 910 is rotatably disposed on the frame 700, the nozzle 920 is disposed on the slider of the reciprocating lead screw mechanism 910, and the gas delivery device is used to deliver high-pressure gas to the nozzle 920. In this embodiment, when the drive motor 510 drives the bidirectional lead screw to rotate in a certain direction through the gear train transmission mechanism 520, the slider of the reciprocating lead screw mechanism 910 reciprocates up and down in the vertical direction, and thus the nozzle 920 on the slider of the reciprocating lead screw mechanism 910 also reciprocates up and down in the vertical direction. At this time, the high-pressure gas ejected from the nozzle 920 can blow the rotating weight 600, thereby blowing the entire surface of the weight 600, so that the sand grains on the surface of the weight 600 can be removed as much as possible.

[0050] The working principle of the demoulding device for casting the weight 600 is described in detail below in combination with the optimal embodiment of the present application:

[0051] Place the center of the lower end surface of the weight 600 on the lower conical head 130, and shorten the distance between the upper and lower conical heads 130 through the distance adjusting mechanism 200 until the two conical heads 130 clamp the weight 600. Then, further finely adjust the distance adjusting mechanism 200 to make the circular shaft rod 120 move axially along the conical head 130 in the accommodating cavity 131, so that the two swing arms 300 rotate and move away from each other. When the swing arms 300 break the sand grain layers on the upper and lower end surfaces of the weight 600, further finely adjust the distance adjusting mechanism 200 to make the swing arms 300 return to the initial position. Then, the drive motor 510 is started to drive the weight 600 to rotate, and the tool rest 410 gradually approaches the peripheral surface of the weight 600. At the same time, the nozzle 920 reciprocates up and down in the vertical direction. When the tool rest 410 just contacts the sand grain layer on the peripheral surface of the weight 600, the tool rest 410 first breaks the sand grain layer and then gradually scrapes off the sand grain layer. At this time, the drive motor 510 stops rotating to avoid the tool rest 410 abutting against the weight 600 and scratching the weight 600. Then, the drive motor 510 rotates in the reverse direction, and the tool rest 410 gradually moves away from the peripheral surface of the weight 600. However, at this time, the nozzle 920 can still reciprocate up and down in the vertical direction, and the weight 600 is also in a rotating state. Thus, the nozzle 920 can continue to blow high-pressure gas on the surface of the weight 600, so that the sand grains on the surface of the weight 600 can be removed as much as possible.

[0052] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0053] The above-described embodiments merely represent several implementation manners of the present invention. The descriptions are relatively specific and detailed, but should not be construed as limiting the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several variations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A demoulding device for weight casting, characterized in that: The demoulding device for weight casting comprises: The two groups of clamping arms are each provided with a rotating clamping portion, and the two groups of clamping portions are arranged opposite to each other; A distance adjustment mechanism, used for adjusting the distance between the two groups of clamping parts; Two sets of end face splitting mechanisms are movably arranged on the two sets of clamping parts respectively, and are used to split the sand layer on the upper and lower end faces of the weight when the two sets of clamping parts clamp the upper and lower end faces of the weight; The peripheral surface splitting mechanism is used to split the sand layer on the peripheral surface of the weight; The driving assembly is used to drive at least one group of the clamping parts to rotate, and at the same time drive the circumferential surface splitting mechanism to approach and move away from the circumferential surface of the weight.

2. The demoulding device for weight casting according to claim 1, characterized in that: The demoulding device for weight casting also includes a frame, and the two groups of clamping parts are limited on the frame along the axial movement of the weight. The two groups of clamping arms are provided with straight racks, and the two groups of straight racks are arranged opposite to each other. The distance adjustment mechanism includes a gear, and the gear is meshed and connected between the two groups of straight racks.

3. The demoulding device for weight casting according to claim 2, characterized in that: The distance adjustment mechanism also includes a handle, the handle is provided with a rod portion rotatably connected to the frame, and the rod portion is connected to the gear.

4. The demoulding device for weight casting according to claim 1, characterized in that: The frame is provided with a through hole arranged along the axial direction of the weight, and the two groups of clamping parts include a circular shaft rod, a conical head, and a first elastic mechanism. The circular shaft rod is inserted into the through hole, and one end of the circular shaft rod is rotatably connected to the clamping arm, a accommodating cavity is provided in the conical head, and an opening is provided at the tail of the conical head, and the opening is communicated with the accommodating cavity, and the other end of the circular shaft rod is arranged in the accommodating cavity along the axial movement of the conical head through the opening, and a rotation limiting connection is generated with the conical head, the end face splitting mechanism includes at least one pair of relatively arranged rotating arms, and the rotating arms are rotatably arranged on the conical head, the driving assembly is transmission-connected with at least one group of the circular shaft rods, and the first elastic mechanism is used to provide a restoring force to prevent the circular shaft rod from extending into the accommodating cavity; wherein, when the distance adjustment mechanism drives the circular shaft rod to move along the axial direction of the conical head in the accommodating cavity, the two groups of the rotating arms rotate to approach and move away from each other.

5. The demoulding device for weight casting according to claim 4, characterized in that: An avoidance groove is provided on the circumferential surface of the conical head, a straight rack block is provided on the circular shaft, and the rotating arm is provided with a gear portion, which is rotatably connected to the conical head and located in the avoidance groove, and one end of the straight rack block is slidably disposed in the avoidance groove along the axial direction of the conical head and meshes with the gear portion.

6. The demoulding device for weight casting according to claim 4, characterized in that: The driving assembly includes a driving motor and a gear transmission mechanism. The driving motor is fixed on the frame. The driving shaft of the driving motor is axially movably connected to the circular shaft and rotationally limits the circular shaft. The driving shaft of the driving motor drives the circumferential surface splitting mechanism to approach and move away from the circumferential surface of the weight through the gear transmission mechanism.

7. The demoulding device for weight casting according to claim 6, characterized in that: A sliding groove is provided on the end surface of one end of the circular shaft away from the conical head, an axially arranged key groove is provided on the inner wall of the sliding groove, and a key block matching with the key groove is provided on the driving shaft of the driving motor.

8. The demoulding device for weight casting according to claim 6, characterized in that: The circumferential surface splitting mechanism includes a blade frame, a second elastic mechanism, a one-way screw, and a special-shaped shaft rod. The blade frame is horizontally movably connected to the frame. The second elastic mechanism is used to provide a restoring force to prevent the blade frame from approaching the circumferential surface of the weight. The one-way screw and the blade frame form a wedge-shaped fit in the vertical direction. The one-way screw is threadedly connected to the frame. The special-shaped shaft rod is rotatably arranged on the frame. The special-shaped shaft rod is axially movably connected to the one-way screw rod and forms a rotation limit. The special-shaped shaft rod is transmission-connected to the gear train transmission mechanism; wherein, when the special-shaped shaft rod rotates forward and reversely, the one-way screw rod moves up and down relative to the special-shaped shaft rod to drive the blade frame to approach and move away from the circumferential surface of the weight.

9. The demoulding device for weight casting according to claim 6, characterized in that: The demoulding device for weight casting also includes a blowing mechanism, which is connected to the gear transmission mechanism to reciprocately blow high-pressure gas in the vertical direction. The driving shaft of the driving motor also drives the circumferential surface splitting mechanism away from the circumferential surface of the weight through the gear transmission mechanism.

10. The demoulding device for weight casting according to claim 9, characterized in that: The spraying mechanism includes a reciprocating screw mechanism, a nozzle, and a gas delivery device. The bidirectional screw of the reciprocating screw mechanism is rotatably arranged on the frame, the nozzle is arranged on a slider of the reciprocating screw mechanism, and the gas delivery device is used to deliver high-pressure gas to the nozzle.

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