A multi-cavity casting mold for water pump casting with easy demolding

Abstract

The utility model relates to foundry mould technical field, and disclose a kind of water pump casting multiple cavity casting mould of easy demoulding, including sand mould, the lower portion of sand mould is equipped with wood mould, the upper portion of wood mould is fixedly installed with four groups of core print, the both sides of sand mould are fixedly installed with fixed block, the four corners of sand mould top end are fixedly installed with knock area, the both ends of fixed frame are installed with knock mechanism, the inside of knock mechanism is installed with replacement mechanism, knock mechanism can reciprocating knock to the knock area of sand mould bottom end, replacement mechanism can conveniently replace knock mechanism, the utility model is provided with knock mechanism, and the mutual cooperation between knock mechanism is utilized, can evenly knock to the triangle area around wood mould, disperses impact force, avoids wood mould head cracking deformation, realizes multiple cavity synchronous smooth demoulding, improves production efficiency and sand core qualification rate, prolongs mould service life.

Description

Technical Field

[0001] This utility model relates to the field of casting mold technology, specifically to a multi-cavity casting mold for water pump castings that facilitates demolding. Background Technology

[0002] In the sand casting production of water pump castings, the wooden mold is the core tooling for sand molding. Its structural design and demolding method directly determine the casting production efficiency, product qualification rate and mold service life.

[0003] In existing technologies, it is inconvenient to knock the wooden mold around its perimeter to demold it. Instead, manual knocking of the mold head is often used to separate the sand mold from the wooden mold. Furthermore, traditional water pump casting production often uses a single-cavity wooden mold structure, which can only form one sand mold at a time. This results in low production efficiency, high labor intensity, and poor dimensional consistency of castings. The wooden mold itself is brittle and lacks a dedicated impact-bearing structure and cushioning protection. Forced knocking can easily cause the wooden mold head to crack, the edges and corners to break, and the whole mold to deform, significantly shortening the service life of the wooden mold and increasing production costs.

[0004] To address the above issues, a multi-cavity casting mold for water pump castings that facilitates demolding is proposed. Utility Model Content

[0005] This invention provides a multi-cavity casting mold for water pump castings that facilitates demolding, solving the problem mentioned in the background art of inconvenience in demolding by striking the four corners of the multi-cavity mold.

[0006] This utility model provides the following technical solution: a multi-cavity casting mold for water pump castings that is easy to demold, comprising a sand mold and a wooden mold for making the sand mold. Four sets of mold cores are fixedly installed on the top of the wooden mold. The four sets of mold cores are embedded inside the sand mold to form the casting cavity. Fixing blocks are fixedly installed on both sides of the sand mold. The sand mold is fixedly installed inside the fixing frame by the fixing blocks. A striking area is fixedly installed at the four corners of the top of the sand mold. A striking mechanism is installed at both ends of the fixing frame. A replacement mechanism is installed inside the striking mechanism. The striking mechanism can reciprocate striking the striking area at the bottom of the sand mold. The replacement mechanism can conveniently replace the striking mechanism.

[0007] Preferably, the striking mechanism includes a mounting frame and a servo motor fixedly mounted on one end of the mounting frame. The mounting frame is fixedly mounted on the front and rear ends of both sides of the mounting frame. A rotating shaft is rotatably mounted on one end of the mounting frame. The output end of the servo motor is fixedly connected to one end of the rotating shaft. A limiting plate is fixedly mounted on the outer side of the other end of the rotating shaft. A transmission frame is sleeved on the outer side of the limiting plate. A transmission rod is mounted on the top end of the transmission frame. A striking head is mounted on the top end of the transmission rod through a replacement mechanism.

[0008] Preferably, two guide wheels are rotatably mounted above the front end of the mounting bracket, and the transmission rod passes between the two guide wheels.

[0009] Preferably, a plastic pad is installed below the striking head.

[0010] Preferably, the replacement mechanism includes a mounting groove at the top of the transmission rod and a mounting block movably installed inside the mounting groove. The mounting block and the transmission rod each have a positioning hole on one side, and a positioning pin is provided inside the positioning hole. A fixed housing is installed at the top of the mounting block.

[0011] Preferably, a telescopic spring is installed at the bottom of the interior of the fixed housing, and a movable rod is installed at the top of the telescopic spring. The top of the movable rod extends to the outside of the fixed housing, and the top of the movable rod is fixedly connected to the bottom of the striking head.

[0012] This utility model has the following beneficial effects: 1. This utility model is equipped with a striking mechanism. By cooperating with each other, the triangular area around the wooden mold can be struck evenly, the impact force can be dispersed, the head of the wooden mold can be prevented from cracking and deforming, the multi-cavity simultaneous and smooth demolding can be achieved, the production efficiency and sand core qualification rate can be improved, and the service life of the mold can be extended.

[0013] 2. This utility model has a replacement mechanism. By utilizing the cooperation between the replacement mechanisms, the striking head can be quickly disassembled and assembled, which is convenient for timely replacement after wear. There is no need to disassemble the entire equipment, which reduces maintenance costs, ensures the continuous and stable operation of the striking mechanism, and extends the overall service life of the mold. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the sand mold structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the wooden mold structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the striking mechanism of this utility model.

[0018] Figure 5 This is a schematic diagram of the replacement mechanism of this utility model.

[0019] In the diagram: 1. Sand mold; 2. Wooden mold; 3. Fixing frame; 4. Fixing block; 5. Mold core; 6. Striking area; 7. Striking mechanism; 71. Mounting frame; 72. Servo motor; 73. Rotating shaft; 74. Limiting plate; 75. Transmission frame; 76. Transmission rod; 77. Striking head; 78. Guide wheel; 8. Replacement mechanism; 81. Mounting slot; 82. Mounting block; 83. Positioning hole; 84. Positioning pin; 85. Fixed housing; 86. Telescopic spring; 87. Movable rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: This example aims to help solve the problem of inconvenience in demolding multi-cavity molds by tapping the four corners. Please refer to [link to example]. Figures 1-5 A multi-cavity casting mold for water pump castings, facilitating demolding, includes a sand mold 1 and a wooden mold 2 for making the sand mold. Four sets of mold cores 5 are fixedly installed on the top of the wooden mold 2. These four sets of mold cores 5 are embedded inside the sand mold 1 to form the casting cavity. Fixing blocks 4 are fixedly installed on both sides of the sand mold 1. The sand mold 1 is fixedly installed inside a fixing frame 3 by the fixing blocks 4, ensuring the wooden mold 2 is stably installed and preventing displacement during molding and hammering, thus avoiding dimensional deviations or mold damage due to shaking. The four mold cores at the top of the sand mold 1... A striking area 6 is fixedly installed at the corner. The striking area 6 is used to disperse the impact force of the striking and protect the wooden mold 2 from cracking and deformation. The two ends of the fixing frame 3 are equipped with striking mechanisms 7. The inner side of the striking mechanism 7 is equipped with a replacement mechanism 8. The striking mechanism 7 can reciprocate to the striking area 6 of the wooden mold 2, so that the wooden mold 2 is evenly stressed and smoothly detaches from the mold, avoiding damage to the sand core. The replacement mechanism 8 can easily replace the striking mechanism 7, facilitate the quick replacement of vulnerable parts, reduce maintenance costs, and improve continuous production efficiency.

[0022] Please see Figure 2 and Figure 4The striking mechanism 7 includes a mounting frame 71 and a servo motor 72 fixedly mounted on one end of the mounting frame 71. The mounting frame 71 is fixedly mounted on the front and rear ends of both sides of the fixed frame 3, providing stable support for the striking mechanism 7. A rotating shaft 73 is rotatably mounted on one end of the mounting frame 71. The output end of the servo motor 72 is fixedly connected to one end of the rotating shaft 73. The servo motor 72 drives the rotating shaft 73 to rotate, providing stable power for reciprocating striking. A limit plate 74 is fixedly mounted on the outer side of the other end of the rotating shaft 73. A transmission frame 75 is sleeved on the outer side of the limit plate 74, converting the rotational motion into linear reciprocating striking motion. A transmission rod 76 is mounted on the top of the transmission frame 75. A striking head 77 is mounted on the top of the transmission rod 76 through a replacement mechanism 8. The striking head 77 strikes the triangular striking area 6 evenly with the reciprocating motion of the transmission rod 76, dispersing the impact force and realizing synchronous and smooth demolding of multiple cavities.

[0023] Please see Figure 4 Two guide wheels 78 are rotatably mounted on the upper front end of the mounting bracket 71. The transmission rod 76 passes between the two guide wheels 78 to guide and limit the transmission rod 76, ensuring that the striking direction is accurate, without shaking or deviation.

[0024] Please see Figure 4 The striking head 77 is made of plastic and uses flexible material to cushion the impact, avoiding damage such as chipping, cracking or breaking of the wooden mold 2 caused by hard impact.

[0025] In this embodiment: the servo motor 72 is started to drive the rotating shaft 73 to rotate, which drives the limiting plate 74 to make eccentric movements, thus driving the transmission frame 75 to move. Then, under the guidance and limitation of the guide wheel 78, the transmission frame 75 converts the rotational force into the linear reciprocating motion of the transmission rod 76. At this time, the striking head 77 can drive the striking area 6 of the wooden mold 2 to strike evenly, disperse the impact force, realize the synchronous and smooth demolding of multiple cavities, and avoid the wooden mold 2 from cracking and deforming.

[0026] Example 2: This example aims to solve the problem of inconvenient replacement of the striking head 77. This example is an improvement on Example 1. For details, please refer to Example 1. Figure 5 The replacement mechanism 8 includes a mounting groove 81 at the top of the transmission rod 76 and a mounting block 82 movably installed inside the mounting groove 81. The mounting block 82 and the transmission rod 76 are both provided with positioning holes 83 on one side. Positioning pins 84 are provided inside the positioning holes 83. Quick disassembly and assembly can be achieved by inserting and pulling the positioning pins 84, which facilitates the quick replacement of the striking head 77. A fixed housing 85 is installed at the top of the mounting block 82.

[0027] Please see Figure 5A telescopic spring 86 is installed at the bottom of the fixed housing 85, and a movable rod 87 is installed at the top of the telescopic spring 86. The telescopic spring 86 forms an elastic buffer to further disperse the impact force and provide double protection for the wooden mold 2. The top of the movable rod 87 extends to the outside of the fixed housing 85, and the top of the movable rod 87 is fixedly connected to the bottom of the striking head 77 to ensure that the striking force is uniform and gentle, so that the sand core can be demolded completely and the pass rate is higher.

[0028] In this embodiment: when the striking head 77 is worn and needs to be replaced, pull out the positioning pin 84 to release the locking between the mounting block 82 and the transmission rod 76, and pull the mounting block 82 out of the mounting groove 81 to complete the disassembly. When replacing the new part, insert the mounting block 82 into the mounting groove 81, and then insert the positioning pin 84 into the positioning hole 83 to achieve quick positioning and locking between the transmission rod 76 and the mounting block 82, completing the convenient replacement and ensuring the continuous and stable operation of the striking mechanism 7. During operation, the striking force of the transmission rod 76 is transmitted to the telescopic spring 86 through the mounting block 82 and the fixed housing 85. The telescopic spring 86 buffers the impact through elastic deformation, and then transmits the soft and uniform force to the striking head 77 through the movable rod 87, achieving double buffer protection and preventing the wooden mold 2 from cracking and deforming due to hard impact.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

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