A casting mold with adjustable bucket tooth pitch

Abstract

The utility model relates to a kind of casting mould of adjustable bucket tooth pitch in lost foam casting technical field, include upper mould body and lower mould body, upper mould body and lower mould body between being equipped with the pitch movable block for forming the distance between bucket tooth upper web and lower web, the inner chamber top surface of upper mould body is equipped with the first boss for forming the bucket tooth upper web connecting hole;The inner chamber top surface of upper mould body is equipped with the first recess groove of adaptive first boss activity insertion, the first recess groove groove bottom is equipped with the positioning rod for adjusting the height of first boss outer convex, the upper surface of the pitch movable block is equipped with second recess groove, the second recess groove is movably equipped with the slab corresponding upper web, height adjusting washer is equipped between the slab and second recess groove groove bottom;The casting mould can quickly adjust the bucket tooth pitch when casting, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of lost foam casting technology, and in particular to a casting mold with adjustable bucket tooth spacing. Background Technology

[0002] As attached Figure 1 As shown, bucket teeth are important components of mechanical equipment used for excavating and handling soil, rock, or other materials. They are typically used with construction machinery such as excavators, loaders, and bulldozers, mounted on the cutterhead at the front of the equipment, and used to perform various earthmoving and construction tasks. Due to the harsh working environment of bucket teeth and the common practice of changing personnel without changing equipment during construction operations, bucket teeth are prone to failure after continuous high-intensity operation. To quickly replace failed bucket teeth, a clearance fit is generally used between the bucket teeth and the cutterhead, meaning the width of the upper and lower webs of the bucket teeth is 1-2 mm larger than the thickness of the cutterhead. However, in actual operation, cutterheads often come from different manufacturers, and for the same dimensional requirements, the lower tolerance limit may be taken, or even smaller than the lower tolerance limit. This results in a larger clearance between the parts. Furthermore, during the production process, the dimensions between the upper and lower web plates constantly change due to seasonal variations and raw material replacements. When a large batch of bucket teeth has significant deviations in the pitch, the bucket tooth mold needs to be adjusted. However, with further changes in weather and raw materials, the modified mold needs to be modified again. This repeated modification causes significant damage to the mold, and the adjustment requires specialized equipment, necessitating transport to the mold factory. The process is generally lengthy, and the dimensions are often determined solely by experience. The suitability of the modified dimensions needs verification; if unsuitable, further adjustments are required. The entire process is inefficient, results in excessive waste, and significantly increases production costs. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art and solve the existing technical problems, this utility model discloses a casting mold with adjustable bucket tooth pitch, which can quickly adjust the bucket tooth pitch during casting and reduce costs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable bucket tooth spacing casting mold includes an upper mold body and a lower mold body. A spacing block is provided between the upper mold body and the lower mold body to form the spacing between the upper and lower web plates of the bucket teeth. The top surface of the inner cavity of the upper mold body is provided with a first protrusion to form a connecting hole for the upper web plate of the bucket teeth. The top surface of the inner cavity of the upper mold body is provided with a first groove adapted to movably insert the first protrusion. A positioning rod for adjusting the outward protrusion height of the first protrusion is provided through the bottom of the first groove. The upper surface of the spacing block is provided with a second groove. A plate corresponding to the upper web plate is movably arranged in the second groove. An adjustment shim is provided between the plate and the bottom of the second groove.

[0005] Furthermore, the first groove is configured as a square groove, and the first protrusion includes a square block portion adapted to the square groove, and a cylindrical portion fixed to the center of the outer end face of the square block portion.

[0006] Furthermore, a threaded through hole is provided in the center of the inner bottom surface of the first groove, and the positioning rod is configured as a bolt adapted to the threaded through hole, and the bolt is fitted with a washer.

[0007] Furthermore, an insertion hole is provided in the center of the inner bottom surface of the first groove, and the positioning rod is configured as an insertion rod that transitionally fits with the insertion hole.

[0008] Furthermore, the height adjustment shim comprises multiple aluminum plates.

[0009] Furthermore, two of the first protrusions are arranged side by side at intervals along the length of the upper web of the bucket tooth.

[0010] Furthermore, the casting mold casts multiple bucket teeth side by side at once, and the corresponding multiple gap blocks are connected as a whole.

[0011] By adopting the technical solution described above, this utility model has the following beneficial effects: The adjustable bucket tooth spacing casting mold disclosed in this utility model can adjust the height of the plate by using height adjustment shims, thereby allowing the spacing movable block to thicken or thin the gap between the upper and lower web plates of the bucket tooth as needed. The first protrusion that forms the connecting hole can also be adjusted adaptively, making it easier to manufacture bucket teeth with different installation spacings. This utility model has little change compared to the original mold, the design modification is simple to operate, greatly saves the time for trimming and debugging, improves production efficiency, and saves casting costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the bucket teeth; Figure 2 This is an exploded view of the mounting structure of the first protrusion; Figure 3 This is an exploded schematic diagram of the aforementioned gap-shaped movable block.

[0013] In the diagram: 1. Upper web plate; 2. Lower web plate; 3. Connecting hole; 4. Spacing block; 401. Second groove; 5. Plate; 6. First groove; 7. Threaded through hole; 8. First protrusion; 801. Square part; 802. Cylindrical part; 9. Bolt; 10. Washer. Detailed Implementation

[0014] The technical solution of this utility model will be described below with reference to the accompanying drawings of the embodiments of this utility model. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this utility model for the convenience of describing this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0015] Traditionally, the white mold for bucket teeth typically has a reinforcing rib at the tail to prevent deformation. Therefore, a retaining block 4 is set between the upper and lower web plates of the white mold. The retaining block 4 can only be pulled out from the left or right. The mold structure is generally divided into an upper mold and a lower mold. The pattern cavity is formed by conformal baffles and the bottom surfaces of the upper and lower molds. After the upper and lower molds are assembled, the cavity should be sealed except for the air plug hole and the injection hole. The thickness of the retaining block 4 in the mold determines the size between the upper and lower web plates of the white mold. Under normal circumstances, the retaining block 4 is integrally formed. A through groove is set on one side of the retaining block 4. When removing the mold, the hand can be inserted into the through groove to pull the block out from the side.

[0016] Combined with appendix Figure 2 and 3 The adjustable bucket tooth pitch casting mold includes an upper mold body and a lower mold body (not shown in the figure). The parting surface between the upper mold body and the lower mold body is usually set at... Figure 1 Between the upper and lower web plates of the bucket tooth, a gap block 4 is provided between the upper mold body and the lower mold body to form the distance between the upper web plate 1 and the lower web plate 2 of the bucket tooth. A first protrusion 8 is provided on the top surface of the inner cavity of the upper mold body to form the connecting hole 3 of the upper web plate 1 of the bucket tooth. Figure 1 As can be seen, in order to form connection 3, the first protrusion 8 must abut against the gap block 4 during casting. Therefore, the change in the thickness of the gap block 4 also affects the position adjustment of the first protrusion 8, which is one of the reasons why traditional mold trimming is troublesome. According to actual production needs, two first protrusions 8 are arranged side by side at intervals along the length of the upper web plate 1 of the bucket tooth, so that two connection holes 3 can be made on one bucket tooth for subsequent connection on the equipment.

[0017] The top surface of the inner cavity of the upper mold body is provided with a first groove 6 adapted to the movable insertion of the first protrusion 8. A positioning rod for adjusting the protrusion height of the first protrusion 8 is provided through the bottom of the first groove 6. The position of the first protrusion 8 is adjusted by the positioning rod to adapt to the thickness variation of the gap movable block 4. Specifically, the first groove 6 is a square groove, and the first protrusion 8 includes a square block part 801 adapted to the square groove and a cylindrical part 802 fixed to the center of the outer end face of the square block part 801. A threaded through hole 7 is provided in the center of the inner bottom surface of the first groove 6. The positioning rod is a bolt 9 adapted to the threaded through hole. The bolt 9 is fitted with a washer 10. By turning the bolt 9, the position base of the first protrusion 8 retracting into the first groove 6 is adjusted, thereby changing the exposed height of the first protrusion 8. With the bolt head of 9 tightened and contacting the bolt, the position of the protrusion 8 retracting into the first groove 6 can be controlled by adjusting the number of washers 10. Alternatively, a simpler structure can be used, with an insertion hole in the center of the inner bottom surface of the first groove 6 and a positioning rod that fits into the insertion hole. The insertion depth of the rod can be adjusted to adjust the first protrusion 8, as long as it contacts the stop block 4. However, it may be difficult to control the force, causing damage to the mold. Alternatively, a retaining hole and retaining spring can be provided in the center of the inner bottom surface of the first groove 6 to axially position the inserted bolt 9 without affecting rotation. A threaded hole for the bolt 9 can be provided on the bottom surface of the first protrusion 8, so that rotating the bolt 9 can also move the first protrusion 8 back and forth.

[0018] The upper surface of the gap block 4 is provided with a second groove 401. A plate 5 corresponding to the upper web plate 1 is movably arranged in the second groove 401. The plate 5 can completely correspond to and match the outer end and the two side edges of the upper web plate 1 of the bucket tooth. In this way, when the height of the plate 5 changes, the upper web plate 1 of the bucket tooth can only change in the thickness direction. An adjustment shim is provided between the plate 5 and the bottom of the second groove 401. The adjustment shim contains multiple thin aluminum plates. The thickness of the thin aluminum plates can be set in various different specifications between 0.1 and 1 mm. Different numbers and specifications of aluminum plates are put in according to the adjustment needs.

[0019] As needed, the casting mold casts multiple bucket teeth side by side at once, and the corresponding multiple spacing blocks 4 are connected as a whole, as shown in the attached figure. Figure 2 As shown, this is equivalent to two geared blocks 4 being integrated, because the corresponding casting mold casts two side-by-side bucket teeth at once.

[0020] When the dimensions between the upper and lower web plates of the bucket tooth casting are not suitable and need to be adjusted, the adjustable tooth spacing casting mold described in this utility model is implemented. First, the spacing block 4 is removed, the plate 5 on the spacing block 4 is removed, the thickness of the aluminum plate in the second groove 401 is reduced or increased, then the plate 5 is put back, and the spacing block 4 is put into the mold. Then the positioning rod is adjusted so that the inner and outer ends of the first protrusion 8 are respectively positioned by the positioning rod and the movable block 4.

[0021] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A casting mold for adjustable bucket tooth spacing, comprising an upper mold body and a lower mold body, wherein a spacing block (4) for forming the distance between the upper mold body and the lower mold body is provided for forming the distance between the upper web plate (1) and the lower web plate (2) of the bucket teeth, and a first protrusion (8) for forming the connecting hole (3) of the upper web plate (1) of the bucket teeth is provided on the top surface of the inner cavity of the upper mold body, characterized in that: The top surface of the inner cavity of the upper mold body is provided with a first groove (6) adapted to the first protrusion (8) for movable insertion. A positioning rod for adjusting the outward protrusion height of the first protrusion (8) is provided at the bottom of the first groove (6). The upper surface of the gap block (4) is provided with a second groove (401). A plate (5) corresponding to the upper web plate (1) is movably arranged in the second groove (401). An adjustment shim is provided between the plate (5) and the bottom of the second groove (401).

2. The casting mold for adjustable bucket tooth pitch according to claim 1, characterized in that: The first groove (6) is a square groove, and the first protrusion (8) includes a square part (801) adapted to the square groove, and a cylindrical part (802) fixed to the center of the outer end face of the square part (801).

3. The casting mold for adjustable bucket tooth pitch according to claim 2, characterized in that: The first groove (6) has a threaded through hole (7) in the center of its inner bottom surface. The positioning rod is a bolt (9) adapted to the threaded through hole. The bolt (9) is fitted with a washer (10).

4. The casting mold for adjustable bucket tooth pitch according to claim 1, characterized in that: The first groove (6) has an insertion hole in the center of its inner bottom surface, and the positioning rod is configured as an insertion rod that transitions with the insertion hole.

5. The casting mold for adjustable bucket tooth pitch according to claim 1, characterized in that: The height adjustment shim comprises multiple aluminum plates.

6. The casting mold for adjustable bucket tooth pitch according to claim 1, characterized in that: The first protrusion (8) is arranged in two parallel rows along the length of the upper web plate (1) of the bucket tooth.

7. The casting mold for adjustable bucket tooth pitch according to claim 1, characterized in that: The casting mold casts multiple bucket teeth side by side at one time, and the corresponding multiple gap blocks (4) are connected as a whole.

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