Casting molding structure for head plate of injection molding machine

Abstract

The utility model provides a head plate casting molding structure of an injection molding machine, and belongs to the technical field of molds. Comprising an upper shell and a lower shell, the upper shell is detachably connected to the top of the lower shell, an upper sand core is arranged in the upper shell, a lower sand core is arranged in the lower shell, a feeding port and an exhaust hole are formed in the top of the upper sand core, and cavities are formed in the upper sand core and the lower sand core. According to the utility model, through the arrangement of the positioning assembly, when one layer of the upper sand core and one layer of the lower sand core are manufactured, the inserting plate is inserted into the upper sand core and the lower sand core, the gravity of the upper sand core and the gravity of the lower sand core are shared through the inserting plate, the upper sand core and the lower sand core are prevented from being separated, and the use is more stable; when the vibrating device is used, the inserting plate is inserted into the upper sand core or the lower sand core, whether the vibrating thickness of each time is the same or not can be more accurately known through the inserting plate, and the stability of the upper sand core and the lower sand core in use is further improved on the premise that the permeability of the upper sand core and the permeability of the lower sand core are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a casting structure for an injection molding machine head plate. Background Technology

[0002] The injection molding machine head plate is an important component of the injection molding machine, mainly used to connect the injection system of the injection molding machine to the mold. It is usually located at the front end of the injection cylinder. The injection molding machine head plate is manufactured by casting. In the manufacturing process, a sand core with a shape adapted to the injection molding machine head plate is first made in the upper and lower shells. In the making of the sand core, a layer of sand is first laid, then vibrated, and then another layer of sand is laid. The vibrated sand core should not be too compact or too loose. After the manufacturing is completed, the upper shell is moved to the top of the lower shell and then the two are fixed together with bolts. Then, material is added into the machine through the feed port. After the material is added, the machine cools and solidifies, and then the injection molding machine head plate inside the sand core can be removed.

[0003] After the upper shell and upper sand core are manufactured, they need to be fixed on top of the lower shell and lower sand core. Since the upper sand core and the upper shell are only connected by friction, and the friction is different in each manufacturing process, the upper sand core may detach from the upper shell after the upper shell is lifted. Therefore, this application provides an injection molding machine head plate casting structure to meet the requirements. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a casting structure for the injection molding machine head plate to solve the problem of the risk of the upper sand core detaching from the upper housing.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A casting structure for an injection molding machine head plate includes an upper shell and a lower shell. The upper shell is detachably connected to the top of the lower shell. An upper sand core is disposed inside the upper shell, and a lower sand core is disposed inside the lower shell. The top of the upper sand core has a feed inlet and a vent. Both the upper and lower sand cores have cavities inside, and the inner cavity formed by the two cavities is adapted to the shape of the injection molding machine head plate. The feed inlet and vent are connected to the cavity of the upper sand core. The structure also includes:

[0007] The positioning assembly comprises several sets, which are arranged on the sides of the upper and lower housings. Each set of positioning assemblies is stepped on the sides of the upper and lower housings. Each positioning assembly includes several fixed seats fixed to the upper and lower housings. A circular plate is rotatably connected inside each fixed seat, and a positioning rod is fixed to the end of the circular plate. The positioning rod movably passes through the fixed seat. Connecting plates are provided on the sides of the housings, and through holes are formed on the connecting plates. The connecting plates movably fit onto the surfaces of two adjacent positioning rods in the same horizontal plane through the through holes. Insertion plates are fixed on the side of the connecting plates closest to the upper or lower housing. Insertion holes are formed on the sides of both the upper and lower housings, and several insertion plates movably pass through the insertion holes and are inserted into the interior of the upper and lower sand cores.

[0008] Preferably, a limit block is fixed at the end of the positioning rod away from the connecting plate.

[0009] Preferably, the circumferential surface of the limiting block is provided with anti-slip stripes.

[0010] Preferably, the inner wall of the through hole is provided with a positioning groove, and the surface of the positioning rod is fixed with an inner positioning block and an outer positioning block. When several insert plates are inserted into the upper and lower sand cores, the inner positioning block is engaged in the positioning groove. When several insert plates are disengaged from the upper and lower sand cores, the outer positioning block is engaged in the positioning groove.

[0011] Preferably, both the inner and outer positioning blocks have arc-shaped chamfers on their surfaces.

[0012] Preferably, the edge of the insert plate away from the connecting plate is provided with an arc-shaped guide surface.

[0013] Preferably, the top and bottom of the connecting plate are provided with grooves.

[0014] Compared with the prior art, this utility model has at least the following beneficial effects:

[0015] In the above scheme, by setting up positioning components, after each layer of the upper and lower sand cores is manufactured, insert plates are inserted into the upper and lower sand cores. The insert plates distribute the weight of the upper and lower sand cores, preventing them from separating and making them more stable in use. Secondly, when the sand core is being manufactured, after a certain thickness of sand is laid, insert plates are inserted into the upper or lower sand core. The insert plates allow for more precise control over whether the thickness of each vibration is the same, ensuring the permeability of the upper and lower sand cores while further improving their stability in use. Attached Figure Description

[0016] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the insert plate of this utility model;

[0019] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0020] Figure 4 This is a three-dimensional structural diagram of the positioning component of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the positioning rod of this utility model;

[0022] Figure 6 This is a cross-sectional view of the connecting plate of this utility model.

[0023] [Figure Labels]

[0024] 1. Upper shell; 2. Lower shell; 3. Upper sand core; 4. Lower sand core; 5. Positioning assembly; 6. Fixing base; 7. Circular plate; 8. Positioning rod; 9. Connecting plate; 10. Insert plate; 11. Insertion hole; 12. Through hole; 13. Positioning groove; 14. Inner positioning block; 15. Outer positioning block; 16. Limiting block; 17. Feed inlet; 18. Vent hole.

[0025] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0026] The following is a detailed description of the injection molding machine head plate casting structure provided by this utility model, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; for some known technologies, those skilled in the art can also use other alternative methods to implement the invention. Furthermore, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0027] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0028] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0029] like Figures 1-5 As shown, an embodiment of this utility model provides a casting structure for an injection molding machine head plate, including an upper shell 1 and a lower shell 2. The upper shell 1 is detachably connected to the top of the lower shell 2. An upper sand core 3 is provided inside the upper shell 1, and a lower sand core 4 is provided inside the lower shell 2. The top of the upper sand core 3 has a feed inlet 17 and a vent 18. Both the upper sand core 3 and the lower sand core 4 have cavities inside. The inner cavity formed by the two cavities is adapted to the shape of the injection molding machine head plate. The feed inlet 17 and the vent 18 are connected to the cavity of the upper sand core 3. The structure also includes:

[0030] Positioning components 5 are provided in several groups, which are arranged on the sides of the upper housing 1 and the lower housing 2. The positioning components 5 are arranged in a stepped manner on the sides of the upper housing 1 and the lower housing 2, so that the insert plates 10 can cover a larger area and further improve the stability during use. The positioning components 5 include several fixed seats 6 fixed on the upper housing 1 and the lower housing 2. A circular plate 7 is rotatably connected inside the fixed seat 6. A positioning rod 8 is fixed at the end of the circular plate 7. The positioning rod 8 moves through the fixed seat 6. A connecting plate 9 is provided on the side of the housing and the lower housing 2. A through hole 12 is opened on the connecting plate 9. The connecting plate 9 is movably sleeved on the surface of two adjacent positioning rods 8 in the same horizontal plane through the through hole 12. An insert plate 10 is fixed on the side of the connecting plate 9 near the upper housing 1 or the lower housing 2. An insertion hole 11 is opened on the side of the upper housing 1 and the lower housing 2. The insert plates 10 move through the insertion hole 11 and are inserted into the interior of the upper sand core 3 and the lower sand core 4.

[0031] like Figure 5As shown, in this embodiment, a limiting block 16 is fixed at the end of the positioning rod 8 away from the connecting plate 9. The limiting block 16 can prevent the connecting plate 9 from detaching from the positioning rod 8.

[0032] like Figure 5 As shown in this embodiment, the circumferential surface of the limiting block 16 is provided with anti-slip stripes. The limiting block 16 can also function as a handle. The positioning rod 8 can be rotated through the limiting block 16. The anti-slip stripes are used to increase the friction between the hand and the limiting block 16 to prevent the hand from slipping at the contact position.

[0033] like Figures 3-6 As shown, in this embodiment, a positioning groove 13 is provided on the inner wall of the through hole 12, and an inner positioning block 14 and an outer positioning block 15 are fixed on the surface of the positioning rod 8. When several insert plates 10 are inserted into the upper sand core 3 and the lower sand core 4, the inner positioning block 14 is engaged in the interior of the positioning groove 13 to prevent the connecting plate 9 from detaching from the surface of the upper housing 1 or the lower housing 2, thereby improving stability. When several insert plates 10 are detached from the interior of the upper sand core 3 and the lower sand core 4, the outer positioning block 15 is engaged in the interior of the positioning groove 13 to achieve positioning of the connecting plate 9 and prevent the insert plates 10 from being inserted into the interior when not in use.

[0034] like Figure 5 As shown, in this embodiment, the surfaces of the inner positioning block 14 and the outer positioning block 15 are both provided with arc-shaped chamfers, which facilitates the movement of the inner positioning block 14 or the outer positioning block 15 into the positioning groove 13.

[0035] like Figure 4 As shown, in this embodiment, an arc-shaped guide surface is provided at the edge of the end of the insert plate 10 away from the connecting plate 9. The guide surface is used for the insert plate 10 to be inserted into the upper sand core 3 or the lower sand core 4.

[0036] like Figure 6 As shown in this embodiment, grooves are provided at the top and bottom of the connecting plate 9. The grooves increase the friction between the plate and the hand, preventing the hand from slipping when pulling the connecting plate 9.

[0037] Working principle: When manufacturing the upper sand core 3 inside the upper shell 1, the upper shell 1 is placed on the ground, and sand is added to the interior of the upper shell 1. After adding a certain amount of sand, it is vibrated. After vibration, the connecting plate 9 is held by hand, and the insert plate 10 is inserted into the interior of the upper sand core 3 through the insertion hole 11. At this time, the bottom of the insert plate 10 should be above this layer of sand to position the thickness of each layer of sand. If the sand bulges when the insert plate 10 is inserted, it means that this layer of sand has not been vibrated properly and needs to be vibrated again. If the bottom of the insert plate 10 does not contact the sand, it means that the sand vibration is out of range and needs to be reprocessed. Secondly, the insert plate 10 shares the weight of the upper sand core 3 to prevent the two from separating, so that the upper sand core 3 can be more stably located inside the upper shell 1. Then, the sand is added and vibrated in sequence. The lower sand core 4 inside the lower shell 2 is manufactured in the same way.

[0038] After the manufacturing is complete, the upper shell 1 is installed on top of the lower shell 2 with bolts, and material is poured into the interior of the upper sand core 3. After cooling and solidification, the head plate can be removed.

[0039] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details have been described in detail in the above preferred embodiments; however, those skilled in the art can fully understand this utility model even without these detailed descriptions.

[0040] 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 principle 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 casting structure for an injection molding machine head plate, comprising an upper shell (1) and a lower shell (2), wherein the upper shell (1) is detachably connected to the top of the lower shell (2), an upper sand core (3) is provided inside the upper shell (1), and a lower sand core (4) is provided inside the lower shell (2), wherein the top of the upper sand core (3) is provided with a feed inlet (17) and a vent (18), and both the upper sand core (3) and the lower sand core (4) are provided with cavities, wherein the inner cavity formed by the two cavities is adapted to the shape of the injection molding machine head plate, and the feed inlet (17) and the vent (18) are connected to the cavity of the upper sand core (3), characterized in that, Also includes: The positioning component (5) is provided in several groups, and the several groups of positioning components (5) are provided on the sides of the upper shell (1) and the lower shell (2). The several groups of positioning components (5) are all arranged in a stepped manner on the sides of the upper shell (1) and the lower shell (2). The positioning component (5) includes several fixed seats (6) fixed on the upper shell (1) and the lower shell (2). A circular plate (7) is rotatably connected inside the fixed seat (6). A positioning rod (8) is fixed at the end of the circular plate (7). The positioning rod (8) moves through the fixed seat (6). The sides of the housing and the lower housing (2) are provided with connecting plates (9), and the connecting plates (9) are provided with through holes (12). The connecting plates (9) are movably sleeved on the surfaces of two adjacent positioning rods (8) in the same horizontal plane through the through holes (12). The side of the connecting plates (9) near the upper housing (1) or the lower housing (2) is fixed with insert plates (10). The sides of the upper housing (1) and the lower housing (2) are provided with insertion holes (11). Several insert plates (10) movably pass through the insertion holes (11) and are inserted into the interior of the upper sand core (3) and the lower sand core (4).

2. The injection molding machine head plate casting structure according to claim 1, characterized in that, A limit block (16) is fixed to the end of the positioning rod (8) away from the connecting plate (9).

3. The injection molding machine head plate casting structure according to claim 2, characterized in that, The circumferential surface of the limiting block (16) is provided with anti-slip stripes.

4. The injection molding machine head plate casting structure according to claim 1, characterized in that, The inner wall of the through hole (12) is provided with a positioning groove (13). The surface of the positioning rod (8) is fixed with an inner positioning block (14) and an outer positioning block (15). When several insert plates (10) are inserted into the upper sand core (3) and the lower sand core (4), the inner positioning block (14) is engaged in the inside of the positioning groove (13). When several insert plates (10) are removed from the inside of the upper sand core (3) and the lower sand core (4), the outer positioning block (15) is engaged in the inside of the positioning groove (13).

5. The injection molding machine head plate casting structure according to claim 4, characterized in that, Both the inner positioning block (14) and the outer positioning block (15) have arc-shaped chamfers on their surfaces.

6. The injection molding machine head plate casting structure according to claim 1, characterized in that, An arc-shaped guide surface is provided at the edge of the end of the insert plate (10) away from the connecting plate (9).

7. The injection molding machine head plate casting structure according to claim 1, characterized in that, The top and bottom of the connecting plate (9) are provided with grooves.

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