Wooden core box mold closing and locking mechanism for pump body casting

Abstract

The utility model relates to the technical field of pump body casting and processing, and discloses a pump body casting wooden core box mold closing and locking mechanism which comprises an upper wooden core box and a lower wooden core box, and a locking assembly is arranged between the upper wooden core box and the lower wooden core box. The locking assembly comprises clamping plates symmetrically fixed to the two sides of the upper wooden core box, wedge-shaped plates are fixed to the bottom faces of the clamping plates, fixing plates are symmetrically fixed to the two sides of the lower wooden core box, and a reinforcing assembly is installed between the upper wooden core box and the lower wooden core box. According to the utility model, the accurate positioning of the upper wooden core box and the lower wooden core box is realized, the buckling and locking can be automatically completed in the mold closing process, the traditional tedious mode of pressing by adding a heavy object is abandoned, the hidden dangers of mold expansion and mold shifting caused by non-uniform pressing force and unstable stress are fundamentally eliminated, and the production efficiency is improved. And the stability of the mold closing state in the sand injection and compaction process is ensured.

Description

A mold closing and locking mechanism for a wooden core box mold used in pump body casting Technical Field

[0001] This utility model relates to the field of pump body casting and processing technology, specifically to a mold closing and locking mechanism for a wooden core box mold for pump body casting. Background Technology

[0002] In the pump body casting process, the molding quality of the sand core directly determines the precision, strength, and performance of the pump body casting. The wooden core box mold, as the core tooling for sand core molding, is crucial for the stability and reliability of its closing and locking mechanism. The wooden core box mold closing and locking mechanism for pump body casting is a key component used to firmly lock the upper and lower wooden core boxes together. Its function is to ensure that the core box mold remains closed during casting processes such as sand injection and compaction, preventing molding defects in the sand core and guaranteeing the production quality and efficiency of the pump body casting. It is widely used in various pump body casting and processing fields.

[0003] Currently, the wooden core box molds used in pump body casting have relatively simple mold closing and locking methods. Most of them rely on external weights to press and fix the core box after mold closing. This method not only has insufficient clamping force and is not safe and reliable enough, but also cannot achieve precise positioning of the upper and lower wooden core boxes. During the sand injection and compaction process, uneven force on the core box can easily lead to mold expansion and mold running, resulting in unqualified sand core forming, which in turn affects the processing accuracy of subsequent pump body castings.

[0004] Therefore, we propose a mold closing and locking mechanism for the wooden core box mold of pump body casting to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this utility model is to provide a mold closing and locking mechanism for a wooden core box mold for pump body casting, so as to solve the problem mentioned in the background art that the existing core box mold cannot achieve precise positioning of the upper and lower wooden core boxes, and that the mold expansion and running phenomenon is easy to occur due to uneven force on the core box during the sand injection and compaction process.

[0006] This utility model provides the following technical solution: a mold closing and locking mechanism for a wooden core box mold for pump body casting, comprising an upper wooden core box and a lower wooden core box, wherein a locking assembly is provided between the upper wooden core box and the lower wooden core box, the locking assembly comprising a locking plate symmetrically fixed on both sides of the upper wooden core box, a wedge plate fixed on the bottom surface of the locking plate, a fixing plate symmetrically fixed on both sides of the lower wooden core box, a hanging ear fixed on both sides of the fixing plate, a wedge groove provided in the fixing plate, the wedge plate engaging with the wedge groove, and a reinforcing assembly installed between the upper wooden core box and the lower wooden core box.

[0007] Preferably, the fixing plate has a sliding groove and a through hole, the through hole being connected to the sliding groove, a sliding rod being slidably connected in the through hole, and a wedge-shaped insert being fixed to the end of the sliding rod, the wedge-shaped insert being slidably connected to the sliding groove.

[0008] Preferably, the wedge plate has a wedge-shaped slot, and the wedge-shaped plug is inserted into the wedge-shaped slot.

[0009] Preferably, a spring is fitted around the outer ring of the slide rod, one end of the spring is fixedly connected to the side wall of the wedge-shaped insert, and the other end of the spring is fixedly connected to the inner wall of the slide groove.

[0010] Preferably, the reinforcement component includes a fixing seat fixed to the surface of the fixing plate, a support rod fixed inside the fixing seat, a sleeve rod rotatably sleeved on the support rod, a screw rod fixed to the outer ring of the sleeve rod, and a nut threaded onto the screw rod.

[0011] Preferably, the card plate has a U-shaped groove, the screw is engaged with the U-shaped groove, and the nut is fitted with the card plate.

[0012] This utility model has the following beneficial effects:

[0013] This mechanism, through a dual design of positioning and locking and secondary reinforcement, solves the problem of insufficient reliability in the locking of traditional wooden core boxes, improves the production quality and processing efficiency of pump body casting sand cores, and provides a strong guarantee for the large-scale and standardized production of pump body castings.

[0014] This mechanism achieves precise positioning of the upper and lower wooden core boxes, and can automatically lock and fasten during the mold closing process. It eliminates the traditional cumbersome method of pressing with external weights, fundamentally eliminating the hidden dangers of mold expansion and running due to uneven pressing force and unstable force. It effectively maintains the stability of the mold closing state during the sand injection and compaction process, laying a solid foundation for the molding quality of the sand core.

[0015] This mechanism effectively improved the sand core forming qualification rate, avoiding rework and waste caused by substandard sand core forming. It also significantly ensured the subsequent machining accuracy of the pump body castings, reducing adjustment costs for later processing steps. Furthermore, the mechanism greatly simplified the mold closing and locking operation process, reduced manual labor intensity, shortened mold assembly time, further improved the overall efficiency of casting production, and reduced energy consumption.

[0016] The locking and reinforcing components of this mechanism are rationally designed, with stable and reliable cooperation among all parts. They are wear-resistant, durable, and can be used repeatedly for a long time, effectively reducing mold maintenance costs and replacement frequency. Furthermore, combined with the detachable bolt-fixed design, when the wooden core box is damaged, the locking and reinforcing components can be disassembled and reused in other intact core boxes, further saving production costs and broadening the mechanism's applicability. It is suitable for sand core forming of pump body castings of various specifications and models. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 is a schematic diagram of the overall structure of this utility model.

[0019] Figure 3 is a schematic diagram of the locking component and the reinforcing component of this utility model.

[0020] Figure 4 is a cross-sectional view of Figure 3 of this utility model.

[0021] Figure 5 is a schematic diagram of the locking component and the reinforcing component of this utility model.

[0022] Figure 6 is a cross-sectional view of Figure 5 of this utility model.

[0023] In the diagram: 1. Upper wooden core box; 2. Lower wooden core box; 3. Locking assembly; 31. Card plate; 32. Wedge plate; 33. Wedge slot; 34. Fixing plate; 35. Hanging lug; 36. Wedge groove; 37. Slide groove; 38. Through hole; 39. Slide rod; 310. Wedge insert; 311. Spring; 4. Reinforcing assembly; 41. Fixing base; 42. Support rod; 43. Sleeve rod; 44. Screw; 45. Nut; 46. U-shaped groove. Detailed Implementation

[0024] 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.

[0025] Example: This example aims to address the problems of insufficient clamping force and unreliable mold locking in traditional wooden core box molds, which rely solely on external weights for clamping after mold closing. These issues lead to mold bulging and slippage during sand injection and compaction, resulting in unqualified sand cores. Please refer to Figures 1-6. A mold closing and locking mechanism for a wooden core box mold used in pump body casting includes an upper wooden core box 1 and a lower wooden core box 2. A locking assembly 3 is provided between the upper and lower wooden core boxes 1 and 2. The locking assembly 3 includes symmetrically fixed clamping plates 31 on both sides of the upper wooden core box 1. A wedge-shaped plate 32 is fixed to the bottom surface of the clamping plates 31. Fixing plates 34 are symmetrically fixed to both sides of the lower wooden core box 2. Hanging ears 35 are fixed to both sides of the fixing plates 34. A wedge-shaped groove 36 is formed inside the fixing plates 34, and the wedge plate 32 engages with the wedge groove 36. A reinforcing assembly 4 is installed between the upper and lower wooden core boxes 1 and 2.

[0026] As shown in Figure 6, a sliding groove 37 is provided in the fixed plate 34, and a through hole 38 is provided in the fixed plate 34, which is connected to the sliding groove 37. A sliding rod 39 is slidably connected in the through hole 38, and a wedge-shaped insert 310 is fixed to the end of the sliding rod 39. The wedge-shaped insert 310 is slidably connected to the sliding groove 37. A wedge-shaped slot 33 is provided in the wedge plate 32, and the wedge-shaped insert 310 is inserted into the wedge slot 33. A spring 311 is sleeved on the outer ring of the sliding rod 39. One end of the spring 311 is fixedly connected to the side wall of the wedge-shaped insert 310, and the other end of the spring 311 is fixedly connected to the inner wall of the sliding groove 37.

[0027] As shown in Figure 5, the reinforcement component 4 includes a fixing seat 41 fixed to the surface of the fixing plate 34, a support rod 42 fixed inside the fixing seat 41, a sleeve rod 43 rotatably sleeved on the support rod 42, a screw rod 44 fixed to the outer ring of the sleeve rod 43, a nut 45 threaded on the screw rod 44, a U-shaped groove 46 opened on the clamping plate 31, the screw rod 44 engaging with the U-shaped groove 46, and the nut 45 fitting against the clamping plate 31.

[0028] In this embodiment: During the casting of the pump body casting, it is necessary to first process and manufacture a corresponding wooden core box mold according to the structural and dimensional requirements of the pump body casting. The wooden core box mold consists of two parts: an upper wooden core box 1 and a lower wooden core box 2, which are used to form the sand core required for casting. In the traditional process, after the upper wooden core box 1 and the lower wooden core box 2 are closed, they are only pressed together by external weights. This results in insufficient pressing force and unreliable mold locking. During the sand injection and compaction process, mold bulging and mold running are prone to occur, making it impossible to obtain a qualified sand core.

[0029] In the mold closing and locking operation of this embodiment, when closing the upper wooden core box 1 and the lower wooden core box 2, as shown in Figures 3-6, the upper wooden core box 1 is first lowered smoothly so that the wedge plate 32 on the bottom surface of the clamping plate 31 is aligned with the wedge groove 36 in the upper fixing plate 34 of the lower wooden core box 2. It should be noted that the clamping plate 31 and the upper wooden core box 1, and the fixing plate 34 and the lower wooden core box 2 are all fixed by bolts. Bolt fixing is existing technology and will not be elaborated on here. Moreover, this bolt fixing method is easy to disassemble. When the upper wooden core box 1 or the lower wooden core box 2 is damaged due to long-term use, the clamping plate 31 and the fixing plate 34 can be disassembled and installed on other core boxes for continued use, which can effectively reduce the cost of mold replacement and maintenance.

[0030] As the wedge plate 32 gradually enters the wedge groove 36, the spring 311 is in the extended state by default, and the wedge block 310 is in the wedge groove 36. When the wedge plate 32 enters the wedge groove 36 and continues to press down, since the inclined surface of the wedge plate 32 matches the inclined surface of the wedge block 310, the inclined surface of the wedge plate 32 will act on the wedge block 310, generating a horizontal thrust on it, causing the wedge block 310 to slide horizontally along the slide groove 37 and gradually slide into the interior of the slide groove 37. At the same time, the slide rod 39 fixed on the end of the wedge block 310 slides synchronously along the through hole 38.

[0031] When the wedge-shaped insert 310 is fully slid into the slide groove 37, the wedge plate 32 continues to move down and is fully engaged in the wedge groove 36. At this time, the wedge slot 33 in the wedge plate 32 is aligned with the wedge-shaped insert 310. The spring 311 releases the squeezing force and drives the slide rod 39 to reset through its own elasticity. This pushes the wedge-shaped insert 310 out of the slide groove 37 and into the wedge slot 33, limiting the wedge plate 32. Thus, the initial installation between the wedge plate 32 and the fixing plate 34 is completed. At the same time, since the locking plate 31 is fixed to the upper wooden core box 1 and the fixing plate 34 is fixed to the lower wooden core box 2, the upper wooden core box 1 and the lower wooden core box 2 are accurately positioned and automatically locked.

[0032] Subsequently, as shown in Figures 3 and 5, the screw 44 is rotated so that it engages with the U-shaped groove 46 on the clamping plate 31. Then, the nut 45 on the screw 44 is tightened so that it fits tightly against the surface of the clamping plate 31. Through the threaded engagement between the nut 45 and the screw 44, downward pressure is applied to the clamping plate 31, thereby providing secondary reinforcement to the upper wooden core box 1 and the lower wooden core box 2 after mold closing. This makes the locking between the upper wooden core box 1 and the lower wooden core box 2 more secure, effectively preventing mold bulging and running during sand injection and compaction, ensuring the molding quality of the sand core, and eliminating the need for additional heavy objects for compaction. This simplifies the operation process and improves production efficiency and product qualification rate.

[0033] 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.

[0034] 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.

Claims

1. A mold closing and locking mechanism for a wooden core box mold used in pump body casting, comprising an upper wooden core box (1) and a lower wooden core box (2), characterized in that: A locking assembly (3) is provided between the upper wooden core box (1) and the lower wooden core box (2). The locking assembly (3) includes a card plate (31) symmetrically fixed on both sides of the upper wooden core box (1). A wedge plate (32) is fixed on the bottom surface of the card plate (31). Fixing plates (34) are symmetrically fixed on both sides of the lower wooden core box (2). Hanging ears (35) are fixed on both sides of the fixing plate (34). A wedge groove (36) is opened in the fixing plate (34). The wedge plate (32) is engaged with the wedge groove (36). A reinforcing assembly (4) is installed between the upper wooden core box (1) and the lower wooden core box (2).

2. The mold closing and locking mechanism for a wooden core box mold for pump body casting according to claim 1, characterized in that: The fixing plate (34) has a sliding groove (37) and a through hole (38) connected to the sliding groove (37). A sliding rod (39) is slidably connected in the through hole (38). A wedge-shaped insert (310) is fixed to the end of the sliding rod (39). The wedge-shaped insert (310) is slidably connected to the sliding groove (37).

3. The mold closing and locking mechanism for a wooden core box mold for pump body casting according to claim 2, characterized in that: The wedge plate (32) has a wedge slot (33) inside, and the wedge block (310) is inserted into the wedge slot (33).

4. The mold closing and locking mechanism for a wooden core box mold for pump body casting according to claim 3, characterized in that: A spring (311) is fitted around the outer ring of the slide rod (39). One end of the spring (311) is fixedly connected to the side wall of the wedge-shaped insert (310), and the other end of the spring (311) is fixedly connected to the inner wall of the slide groove (37).

5. The mold closing and locking mechanism for a wooden core box mold for pump body casting according to claim 1, characterized in that: The reinforcement component (4) includes a fixing seat (41) fixed to the surface of the fixing plate (34), a support rod (42) fixed inside the fixing seat (41), a sleeve rod (43) rotatably sleeved on the support rod (42), a screw rod (44) fixed to the outer ring of the sleeve rod (43), and a nut (45) threaded on the screw rod (44).

6. The mold closing and locking mechanism for a wooden core box mold for pump body casting according to claim 5, characterized in that: The card plate (31) has a U-shaped groove (46), the screw (44) is engaged with the U-shaped groove (46), and the nut (45) is in contact with the card plate (31).

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