Mold convenient to demold

Abstract

The utility model relates to the technical field of metal piece production, and discloses a mold convenient to demold, which comprises a lower mold base and an upper mold base, a material pushing plate is arranged in the lower mold base in a sliding manner, a plurality of groups of mold rods for through holes penetrate through the lower side of the upper mold base in a sliding manner, oil guide channels are arranged on the inner sides of the upper parts of the mold rods for the through holes, and an oil storage cavity is arranged on the upper part of the inner side of the upper mold base. The upper portion of the through hole die rod slidably penetrates into the oil storage cavity, multiple sets of oil inlets are formed in the side wall of the upper portion of the through hole die rod, and multiple sets of oil outlets are formed in the portion, located on the lower side of the upper die base, of the through hole die rod. An elastic reset assembly is arranged between the middle of the through hole die rod and the interior of the upper die base, and the through hole die rod is driven to reset through the elastic reset assembly. Compared with the prior art, the utility model has the advantages that the die rod for the through hole is arranged on the lower side of the upper die holder, the pump cover and the mounting hole are integrally cast and molded by matching with the lower die holder and the upper die holder, and the die rod for the through hole is driven to reset by the elastic reset component, so that the outer side of the die rod for the through hole is automatically coated with oil.

Description

Technical Field

[0001] This utility model relates to the field of metal parts manufacturing technology, specifically to a mold that is easy to demold. Background Technology

[0002] The production of pump covers refers to the process of manufacturing pump covers. Pump covers are an important component of pumps, usually installed on the top or side of the pump to seal the internal space of the pump, prevent media leakage, and support and protect the internal mechanical components of the pump.

[0003] Pump covers are typically produced by casting. To facilitate installation, multiple mounting holes are provided at the edges. Currently, mounting holes for pump covers are usually formed by punching or integral casting. Punching is performed on a punching trolley after the pump cover is cast, which is a relatively cumbersome operation. Many manufacturers choose integral casting to create the mounting holes. However, integral casting of the mounting holes increases the contact area between the pump cover and the mold, making demolding of this type of mold more inconvenient.

[0004] To address the aforementioned technical problems, this application proposes a mold that facilitates demolding. Utility Model Content

[0005] I. Technical problems to be solved

[0006] The technical problem this invention aims to solve is that when the mounting hole is integrally cast, the contact area between the pump cover and the mold is increased, making mold demolding more inconvenient.

[0007] II. Technical Solution

[0008] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a mold that is easy to demold, including a lower mold base and an upper mold base, an installation block is installed on the side wall of the lower mold base, a hydraulic telescopic rod is installed on the top of the upper mold base, an injection port is provided inside the upper mold base, and an injection pipe connected to the injection port is installed on the upper side of the upper mold base;

[0009] The lower side of the upper mold base is a shaping protrusion that extends into the lower mold base. A pusher plate is slidably installed inside the lower mold base. Multiple sets of through-hole mold rods slide through the lower side of the upper mold base. An oil guide channel is provided on the upper inner side of the through-hole mold rod. An oil storage cavity is provided on the upper inner side of the upper mold base. The upper part of the through-hole mold rod slides into the oil storage cavity, and multiple sets of oil inlets communicating with the oil guide channel are provided on the upper side wall. Multiple sets of oil outlets communicating with the oil guide channel are provided on the part of the through-hole mold rod located on the lower side of the upper mold base.

[0010] A spring-loaded reset assembly is provided between the middle of the through-hole mold rod and the interior of the upper mold base. The spring-loaded reset assembly drives the through-hole mold rod to reset, and automatically applies oil to the outside of the through-hole mold rod.

[0011] As an improvement, the top of the oil storage chamber is provided with multiple sets of slots, the upper part of the through hole is inserted into the corresponding slot, and multiple sets of oil inlets are located inside the slots.

[0012] As an improvement, the elastic reset assembly includes a spring and a limiting ring. The upper mold base has an internal mounting cavity. The through-hole mold rod slides through the mounting cavity. The spring is installed inside the mounting cavity. One end of the spring is fixedly connected to the inner wall of the mounting cavity, and the other end is connected to the through-hole mold rod. The limiting ring is sleeved on the outside of the through-hole mold rod and is located on the lower side of the upper mold base. The lower side of the upper mold base has a slot for engaging the limiting ring.

[0013] As an improvement, the oil drain port is made so that the limiting ring and the through hole are connected by a mold rod, and the oil drain end faces downward.

[0014] As an improvement, an electric telescopic rod is installed through the bottom of the lower mold base, and the lower side of the pusher plate is connected to the electric telescopic rod.

[0015] As an improvement, the upper side of the pusher plate is provided with multiple sets of positioning holes for the mold rod to be inserted into through the mating through holes.

[0016] III. Beneficial Effects

[0017] The advantages of this utility model compared with the prior art are as follows: a through-hole mold rod is installed on the lower side of the upper mold base, and the pump cover and mounting hole are integrally cast together with the lower mold base and the upper mold base. An oil storage cavity is provided on the inner side of the upper mold base, and the through-hole mold rod is reset by the elastic reset component, so as to automatically apply oil to the outer side of the through-hole mold rod, which facilitates the demolding of the pump cover. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a mold that is easy to demold according to this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the lower mold base of a mold that is easy to demold according to this utility model.

[0020] Figure 3 This is a schematic diagram of the bottom structure of the lower mold base of a mold that facilitates demolding, according to this utility model.

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the upper mold base of a mold that is easy to demold according to this utility model.

[0022] Figure 5 This is an enlarged view of point A of a mold that is easy to demold according to this utility model.

[0023] As shown in the figure: 1. Lower mold base; 2. Upper mold base; 3. Mounting block; 4. Hydraulic telescopic rod; 5. Injection port; 6. Injection pipe; 7. Push plate; 8. Electric telescopic rod; 9. Positioning hole; 10. Oil storage chamber; 11. Mounting cavity; 12. Through hole mold rod; 13. Spring; 14. Oil guide channel; 15. Oil inlet; 16. Slot; 17. Limiting ring; 18. Slot; 19. Oil outlet. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 As shown, a mold for easy demolding includes a lower mold base 1 and an upper mold base 2. An mounting block 3 is installed on the side wall of the lower mold base 1. The lower mold base 1 is fixed by mounting bolts passing through the mounting block 3. The lower side of the upper mold base 2 has a shaping protrusion that extends into the lower mold base 1. A hydraulic telescopic rod 4 is installed on the top of the upper mold base 2. The hydraulic telescopic rod 4 drives the upper mold base 2 to move up and down and be pulled out from the lower mold base 1. The upper mold base 2 is provided with a sluice gate 5. A sluice tube 6 connected to the sluice gate 5 is installed on the upper side of the upper mold base 2. Molten metal is fed between the lower mold base 1 and the upper mold base 2 through the sluice tube 6 and the sluice gate 5.

[0027] A pusher plate 7 is slidably installed inside the lower mold base 1. Multiple sets of through-hole mold rods 12 slide through the lower side of the upper mold base 2. Multiple sets of positioning holes 9 are provided on the upper side of the pusher plate 7 to contact and insert the through-hole mold rods 12. The through-hole mold rods 12 are inserted into the positioning holes 9, and the through-hole mold rods 12 create mounting holes at the edge of the pump cover. An electric telescopic rod 8 is installed through the bottom of the lower mold base 1. The lower side of the pusher plate 7 is connected to the electric telescopic rod 8. The pusher plate 7 is pushed up and down by the electric telescopic rod 8, and the formed pump cover can be pushed out of the lower mold base 1 through the pusher plate 7.

[0028] To apply oil to the outer wall of the through-hole mold rod 12, as shown in the attached document. Figure 4 and attached Figure 5As shown, the upper inner side of the through-hole mold rod 12 is provided with an oil guiding channel 14, and the upper inner side of the upper mold base 2 is provided with an oil storage cavity 10. The upper part of the through-hole mold rod 12 slides into the oil storage cavity 10, and the upper side wall is provided with multiple sets of oil inlets 15 communicating with the oil guiding channel 14. Before the upper mold base 2 is sent into the lower mold base 1, the upper part of the through-hole mold rod 12 is located inside the oil storage cavity 10, and the oil inlets 15 enter the oil storage cavity 10. Through the oil inlets 15, oil is sent to the oil guiding channel 14 inside the through-hole mold rod 12. The part of the through-hole mold rod 12 located on the lower side of the upper mold base 2 is provided with multiple sets of oil outlets 19 communicating with the oil guiding channel 14. Through the multiple sets of oil outlets, oil is discharged. Oil is discharged from port 19 to the outer wall of the through-hole mold rod 12 to prevent molten metal from sticking to the through-hole mold rod 12. The top of the oil storage cavity 10 is provided with multiple sets of slots 16. The upper part of the through-hole mold rod 12 is inserted into the corresponding slot 16, and multiple sets of oil inlets 15 are located inside the slot 16. After the upper mold base 2 is sent into the lower mold base 1, the lower end of the through-hole mold rod 12 is inserted into the positioning hole 9. The through-hole mold rod 12 moves upward. The through-hole mold rod 12 and multiple sets of oil inlets 15 are located inside the slot 16 to prevent oil from entering the oil guide channel 14 again, causing oil waste. When the mold is not in use, the lower end of the through-hole mold rod 12 can be supported to prevent oil from flowing out and causing waste.

[0029] As attached Figure 4 and attached Figure 5 As shown, a spring-loaded reset assembly is provided between the middle of the through-hole mold rod 12 and the interior of the upper mold base 2. The spring-loaded reset assembly includes a spring 13 and a limiting ring 17. The upper mold base 2 has an installation cavity 11 inside, through which the through-hole mold rod 12 slides through the installation cavity 11. The spring 13 is installed inside the installation cavity 11, with one end of the spring 13 fixedly connected to the inner wall of the installation cavity 11 and the other end connected to the through-hole mold rod 12. The spring 13 limits the through-hole mold rod 12, so that the oil drain port 19 on the side wall of the through-hole mold rod 12 is located inside the oil storage cavity 10. The limiting ring 17 is sleeved on the outside of the through-hole mold rod 12 and located on the lower side of the upper mold base 2. The lower side of the base 2 is provided with a slot 18 for engaging the limiting ring 17. After the upper mold base 2 is sent into the lower mold base 1, the lower end of the through hole mold rod 12 is supported on the upper side of the push plate 7, causing the through hole mold rod 12 to move upward and stop oil supply. The spring 13 is compressed. After demolding, the spring 13 pushes the through hole mold rod 12 downward by its rebound force, causing the through hole mold rod 12 to reset. This causes the oil drain port 19 on the side wall of the through hole mold rod 12 to be located inside the oil storage cavity 10, allowing oil to enter the guide oil channel 14. The oil drain port 19 passes through the limiting ring 17 and the through hole mold rod 12, with the oil drain end facing downward. The oil drain port 19 automatically applies oil to the side wall of the through hole mold rod 12.

[0030] 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.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A mold for easy demolding, comprising a lower mold base (1) and an upper mold base (2), wherein an mounting block (3) is installed on the side wall of the lower mold base (1), a hydraulic telescopic rod (4) is installed on the top of the upper mold base (2), an injection port (5) is provided inside the upper mold base (2), and an injection pipe (6) communicating with the injection port (5) is installed on the upper side of the upper mold base (2), characterized in that: The lower side of the upper mold base (2) is a shaping protrusion that extends into the lower mold base (1). A pusher plate (7) is slidably installed inside the lower mold base (1). Multiple sets of through-hole mold rods (12) slide through the lower side of the upper mold base (2). An oil guide channel (14) is provided on the upper inner side of the through-hole mold rod (12). An oil storage cavity (10) is provided on the upper inner side of the upper mold base (2). The upper part of the through-hole mold rod (12) slides into the oil storage cavity (10). Multiple sets of oil inlets (15) communicating with the oil guide channel (14) are provided on the upper side wall. Multiple sets of oil outlets (19) communicating with the oil guide channel (14) are provided on the part of the through-hole mold rod (12) located on the lower side of the upper mold base (2). A spring-loaded reset assembly is provided between the middle of the through-hole mold rod (12) and the interior of the upper mold base (2). The spring-loaded reset assembly drives the through-hole mold rod (12) to reset, and automatically applies oil to the outside of the through-hole mold rod (12).

2. The mold for easy demolding according to claim 1, characterized in that: The top of the oil storage cavity (10) is provided with multiple sets of slots (16), the upper part of the through hole mold rod (12) is inserted into the corresponding slot (16), and multiple sets of oil inlets (15) are located inside the slot (16).

3. The mold for easy demolding according to claim 1, characterized in that: The elastic reset assembly includes a spring (13) and a limiting ring (17). The upper mold base (2) has an installation cavity (11) inside. The through hole mold rod (12) slides through the installation cavity (11). The spring (13) is installed inside the installation cavity (11). One end of the spring (13) is fixedly connected to the inner wall of the installation cavity (11), and the other end is connected to the through hole mold rod (12). The limiting ring (17) is sleeved on the outside of the through hole mold rod (12) and located on the lower side of the upper mold base (2). The lower side of the upper mold base (2) has a slot (18) for engaging the limiting ring (17).

4. The mold for easy demolding according to claim 3, characterized in that: The oil drain port (19) passes through the limiting ring (17) and the through hole mold rod (12), with the oil drain end facing downwards.

5. The mold for easy demolding according to claim 1, characterized in that: The bottom of the lower mold base (1) is fitted with an electric telescopic rod (8), and the lower side of the pusher plate (7) is connected to the electric telescopic rod (8).

6. A mold for easy demolding according to claim 5, characterized in that: The upper side of the pusher plate (7) is provided with multiple sets of positioning holes (9) for the mold rod (12) to be inserted into the through holes.

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