Hollow mold

Abstract

The utility model discloses a hollow mould which comprises a lower mould and an upper mould arranged at the upper end of the lower mould, a lifting rod is fixedly installed at the upper end of the upper mould, mould cavities are formed in the ends, close to each other, of the lower mould and the upper mould, and a butt joint rod is fixedly installed on the upper end face of the lower mould. A rack is fixedly installed on the lower cushion face of the upper mold and located in the lower mold, a rotating rod is rotationally installed in the lower mold, a driving gear is fixedly installed on the outer side of the rotating rod, a jacking plate is slidably installed in the lower mold, and meanwhile the driving gear is connected with the rack in a meshed mode. According to the hollow mold, through upward movement of the upper mold, internal gas exchange of the main gas cavity and the auxiliary gas cavity is achieved, automatic upward movement of the jacking plate is completed, the effect of jacking out a product in the mold cavity is achieved, the demolding convenience of the mold is improved, and the production efficiency of the mold is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and particularly relates to a hollow mold. Background Art

[0002] Generally, a mold refers to various dies and tools used in industrial production to obtain required products by means of injection molding, blow molding, extrusion, die casting, forging, smelting, stamping, etc. During the use of the mold, generally, the closing and separation of two sets of upper and lower (or left and right) molds need to be controlled, and the accurate shaping of the internal product is completed through precise docking. However, there are still certain defects in the use of existing molds, such as:

[0003] The patent application with the publication number of CN220335596U discloses a hollow pulp molding mold. By providing a connecting buckle and bolts, the upper mold body and the lower mold body are rotationally connected through the connecting buckle, so as to achieve the effect of sealing the product and preventing impurities from entering. By providing an electromagnetic coil, a positive wiring port, a negative wiring port and a connecting wire, the positive wiring port and the negative wiring port are energized, and then the electromagnetic coil is heated, so as to achieve the effect of rapid forming of pulp molding. It has strong practicability. A stainless steel filter screen and a plurality of ventilation holes are provided to achieve the effect of strengthening the demolding effect;

[0004] In the above document, during the use of the mold, the upper mold body and the lower mold body need to be docked to complete the processing process of the product. After the upper mold body and the lower mold body are separated, the product inside the mold cavity needs to be taken out separately, and the product taking-out process needs to be completed manually. The time required for this taking-out process will be affected by human factors. Due to different personal habits, it is difficult to guarantee the demolding time and quality of the product, it is difficult to guarantee the production efficiency of the mold, and it is easy to affect the production effect of the mold.

[0005] In view of the above problems, it is urgent to innovate and design on the basis of the original mold structure. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a hollow mold to solve the problems raised in the above background art that the product inside the mold cavity needs to be taken out separately, and the product taking-out process needs to be completed manually. The time required for this taking-out process will be affected by human factors. Due to different personal habits, it is difficult to guarantee the demolding time and quality of the product, it is difficult to guarantee the production efficiency of the mold, and it is easy to affect the production effect of the mold.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A hollow mold, including a lower mold and an upper mold arranged at the upper end of the lower mold;

[0008] A lifting rod is fixedly installed at the upper end of the upper mold. Mold cavities are provided at both ends of the lower mold and the upper mold that are close to each other, and a docking rod is fixedly installed on the upper end surface of the lower mold.

[0009] A rack is fixedly installed on the lower cushion surface of the upper mold, and the rack is located inside the lower mold. A rotating rod is rotatably installed inside the lower mold, a driving gear is fixedly installed on the outer side of the rotating rod, and a jacking plate is slidably installed inside the lower mold. At the same time, the driving gear is meshed with the rack.

[0010] Preferably, a ratchet is fixedly installed at one end of the rotating rod away from the driving gear, a rotating sleeve is rotatably installed on the outer side of the rotating rod, and the rotating sleeve is located outside the ratchet. A fixed shaft is fixedly installed inside the rotating sleeve, a ratchet tooth is rotatably installed on the outer side of the fixed shaft, and a torsion spring I is nested inside the ratchet tooth.

[0011] Preferably, a connecting rod is fixedly installed at one end of the rotating sleeve away from the rotating rod, and a driven gear is fixedly installed on the outer side of the connecting rod.

[0012] Preferably, a main air cavity and a secondary air cavity are provided inside the lower mold, and the main air cavity and the secondary air cavity are internally connected. A main seal sleeve is slidably installed inside the main air cavity, a toothed plate is fixedly installed at one end of the main seal sleeve away from the main air cavity, and the toothed plate is meshed with the driven gear.

[0013] Preferably, a secondary seal sleeve is slidably installed inside the secondary air cavity, a jacking rod is fixedly installed at the upper end of the secondary seal sleeve, and the upper end surface of the jacking rod is fixedly connected to the lower end surface of the jacking plate.

[0014] Preferably, a rotating shaft is rotatably installed inside the lower mold, a torsion spring II and a winding wheel are sleeved on the outer side of the rotating shaft, and the winding wheel is fixedly connected to the rotating shaft. A traction rope is wound around the outer side of the winding wheel, and one end of the traction rope away from the winding wheel is fixedly connected to one end of the main seal sleeve close to the toothed plate.

[0015] Preferably, a telescopic rod is fixedly installed at the upper end of the rotating shaft, a dial is fixedly installed at the upper end of the telescopic rod, and the dial and the telescopic rod are located inside the lower mold.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] 1. By the upward movement of the upper mold, the internal gas exchange of the main air cavity and the secondary air cavity is realized, the automatic upward movement of the jacking plate is completed, the effect of ejecting the product inside the mold cavity is realized, the convenience of demolding of the mold is improved, and the production efficiency of the mold is ensured.

[0018] 2. By setting the ratchet and ratchet teeth, the jacking plate can automatically descend by gravity and achieve automatic reset. At the same time, the reset of the toothed plate and the main sealing sleeve is completed by the gas exchange between the auxiliary air chamber and the main air chamber, which is convenient for the next demolding process;

[0019] 3. Further, by the movement of the main sealing sleeve, the traction rope can pull the winding wheel and the rotating shaft to rotate, complete the rotation of the telescopic rod and the dial plate, and realize the discharging process of the product, improving the automation effect of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 2 is a front view structural schematic diagram of the rack of the present utility model;

[0022] Figure 3 is a front sectional structural schematic diagram of the present utility model;

[0023] Figure 4 is a sectional three-dimensional structural schematic diagram of the rotating sleeve of the present utility model;

[0024] Figure 5 is a front view structural schematic diagram of the toothed plate of the present utility model;

[0025] Figure 6 is a front view structural schematic diagram of the dial plate of the present utility model;

[0026] Figure 7 is a top view structural schematic diagram of the lower mold of the present utility model;

[0027] Figure 8 is a front view structural schematic diagram of the rotating shaft of the present utility model.

[0028] In the figure: 1. Lower mold; 2. Upper mold; 3. Lifting rod; 4. Mold cavity; 5. Docking rod; 6. Rack; 7. Jacking plate; 8. Rotating rod; 9. Driving gear; 10. Ratchet; 11. Rotating sleeve; 12. Fixed shaft; 13. Torsion spring I; 14. Connecting rod; 15. Driven gear; 16. Toothed plate; 17. Main sealing sleeve; 18. Main air chamber; 19. Auxiliary air chamber; 20. Auxiliary sealing sleeve; 21. Jacking rod; 22. Rotating shaft; 23. Torsion spring II; 24. Winding wheel; 25. Telescopic rod; 26. Dial plate; 27. Traction rope; 28. Ratchet teeth. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] In a specific embodiment, as Figure 1 - Figure 2 and Figure 7 shown, the use process of the mold is disclosed;

[0031] The lower mold 1 and the upper mold 2 provided at the upper end of the lower mold 1;

[0032] A lifting rod 3 is fixedly installed at the upper end of the upper mold 2. Mold cavities 4 are opened at both ends of the lower mold 1 and the upper mold 2 close to each other, and a docking rod 5 is fixedly installed on the upper end surface of the lower mold 1.

[0033] When using this hollow mold, it is necessary to first place the mold at the position where work needs to be carried out, and then the mold can be made to work. During this process, the liquid plastic to be shaped needs to be injected into the interior of the mold cavity 4. At this time, it is necessary to close the lower mold 1 and the upper mold 2. The docking rod 5 will limit the upper mold 2 to ensure the accuracy of the mold closing of the lower mold 1 and the upper mold 2. After the injection is completed and the cooling and shaping are completed, the upper mold 2 can be lifted by the lifting rod 3. At this time, the product inside the mold cavity 4 can be taken out, and thus the use process of the mold is completed.

[0034] In one of the specific embodiments, as Figure 1 - Figure 5 shown, the process of manual demoulding required by the existing mold is solved;

[0035] A rack 6 is fixedly installed on the lower cushion surface of the upper mold 2, and the rack 6 is located inside the lower mold 1. A rotating rod 8 is rotatably installed inside the lower mold 1, and a driving gear 9 is fixedly installed on the outer side of the rotating rod 8. At the same time, a jacking plate 7 is slidably installed inside the lower mold 1, and the driving gear 9 is meshed with the rack 6;

[0036] One end of the rotating rod 8 away from the driving gear 9 is fixedly installed with a ratchet 10, and a rotating sleeve 11 is rotatably installed on the outer side of the rotating rod 8. And the rotating sleeve 11 is located outside the ratchet 10. A fixed shaft 12 is fixedly installed inside the rotating sleeve 11, and a ratchet tooth 28 is rotatably installed on the outer side of the fixed shaft 12. And a torsion spring 13 is nested inside the ratchet tooth 28;

[0037] One end of the rotating sleeve 11 away from the rotating rod 8 is fixedly installed with a connecting rod 14, and a driven gear 15 is fixedly installed on the outer side of the connecting rod 14;

[0038] The interior of the lower mold 1 is provided with a main air cavity 18 and a secondary air cavity 19, and the main air cavity 18 and the secondary air cavity 19 are internally connected. A main seal sleeve 17 is slidably installed inside the main air cavity 18, and a toothed plate 16 is fixedly installed at one end of the main seal sleeve 17 away from the main air cavity 18, and the toothed plate 16 is meshed with the driven gear 15;

[0039] A secondary seal sleeve 20 is slidably installed inside the secondary air cavity 19, and a jacking rod 21 is fixedly installed at the upper end of the secondary seal sleeve 20, and the upper end surface of the jacking rod 21 is fixedly connected to the lower end surface of the jacking plate 7.

[0040] When using this hollow mold, when the lower mold 1 is separated from the upper mold 2, it will drive the rack 6 to move upward. During the upward movement of the rack 6, it will drive the rotating rod 8 to rotate through the driving gear 9 meshed with it. When the rotating rod 8 rotates at this time, the ratchet 10 will rotate. At this time, the ratchet 10 and the ratchet teeth 28 are in a meshed state, and the torsion spring 13 is in an expanded state at this time. At this time, the ratchet 10 will drive the rotating sleeve 11 to rotate through the ratchet teeth 28, and the rotating sleeve 11 will drive the driven gear 15 to rotate through the connecting rod 14. At this time, the driven gear 15 will cause the toothed plate 16 meshed with it to move, and the toothed plate 16 will drive the main seal sleeve 17 to move inside the main air cavity 18. At this time, the main seal sleeve 17 will transport the gas inside the main air cavity 18 to the inside of the secondary air cavity 19. The volume of the secondary air cavity 19 is smaller than that of the main air cavity 18, and the air pressure inside the secondary air cavity 19 will increase and push the secondary seal sleeve 20 to slide upward inside the secondary air cavity 19. The upward movement of the secondary seal sleeve 20 will push out the product inside the mold cavity 4 through the jacking plate 7, completing the demolding process of this mold and ensuring the convenience of demolding of this mold;

[0041] After demolding is completed, the upper mold 2 will move downward. At this time, the jacking plate 7 will move downward due to gravity, and the jacking rod 21 and the secondary seal sleeve 20 will slide downward inside the secondary air cavity 19. At this time, the gas inside the secondary air cavity 19 will re-enter the inside of the main air cavity 18. At this time, the air pressure inside the main air cavity 18 will increase and push the main seal sleeve 17 and the toothed plate 16 to move outward. At this time, the toothed plate 16 will drive the connecting rod 14 to rotate through the driven gear 15, and the connecting rod 14 will drive the rotating sleeve 11 to rotate. At this time, the rotation direction of the rotating sleeve 11 is opposite to the previous rotation direction of the rotating sleeve 11. During this process, the ratchet 10 will be separated from the ratchet teeth 28. Thus, the movement process of the jacking plate 7 is completed, effectively ensuring the convenience of demolding of this mold.

[0042] On the basis of the above embodiments, as Figure 1 - Figure 8 shown, it solves the problem that existing molds need manual or other equipment for unloading;

[0043] Inside the lower mold 1, a rotating shaft 22 is rotatably installed. A torsion spring two 23 and a winding wheel 24 are sleeved on the outer side of the rotating shaft 22. The winding wheel 24 is fixedly connected to the rotating shaft 22. A traction rope 27 is wound around the outer side of the winding wheel 24. One end of the traction rope 27 away from the winding wheel 24 is fixedly connected to one end of the main seal sleeve 17 close to the toothed plate 16.

[0044] The upper end of the rotating shaft 22 is fixedly installed with a telescopic rod 25. The upper end of the telescopic rod 25 is fixedly installed with a dial 26. The dial 26 and the telescopic rod 25 are located inside the lower mold 1.

[0045] During the upward movement of the upper mold 2, the upper mold 2 will separate from the lower mold 1. At this time, the telescopic rod 25 will expand and push the dial 26 to move upward from the inside of the lower mold 1. The main seal sleeve 17 will slide inside the main air chamber 18. During the movement of the main seal sleeve 17, it will pull the traction rope 27 to move. At this time, the traction rope 27 will expand on the outer side of the winding wheel 24. The winding wheel 24 will rotate and drive the rotating shaft 22 to rotate. At this time, the torsion spring two 23 will be wound. During the rotation of the rotating shaft 22, it will drive the telescopic rod 25 and the dial 26 to rotate, so that the dial 26 will push the product on the lifting plate 7 downward to complete the unloading process.

[0046] When the lower mold 1 moves downward, the wound torsion spring two 23 will expand and make the winding wheel 24 and the telescopic rod 25 rotate to the initial position. The telescopic rod 25 will drive the dial 26 to rotate to the initial position. When the lower mold 1 moves downward, it will contact the dial 26 and press the dial 26 inside the upper mold 2. The telescopic rod 25 will contract, thus completing the movement process of the telescopic rod 25 and the dial 26, and effectively improving the convenience of using the mold and increasing the overall practicality.

[0047] The content not detailed in this specification belongs to the prior art well-known to those skilled in the art.

[0048] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hollow mold, comprising a lower mold (1) and an upper mold (2) arranged at the upper end of the lower mold (1); Features: The upper end of the upper mold (2) is fixedly provided with a lifting rod (3), the ends of the lower mold (1) and the upper mold (2) close to each other are both provided with a mold cavity (4), and the upper end surface of the lower mold (1) is fixedly provided with a docking rod (5); A rack (6) is fixedly mounted on the lower surface of the upper mold (2), and the rack (6) is located inside the lower mold (1). A rotating rod (8) is rotatably mounted inside the lower mold (1), and a driving gear (9) is fixedly mounted on the outer side of the rotating rod (8). A lifting plate (7) is slidably mounted inside the lower mold (1), and the driving gear (9) is meshingly connected with the rack (6).

2. A hollow mold according to claim 1, characterized in that: A ratchet (10) is fixedly mounted on one end of the rotating rod (8) away from the driving gear (9), and a rotating sleeve (11) is rotatably mounted on the outer side of the rotating rod (8), and the rotating sleeve (11) is located on the outer side of the ratchet (10), a fixed shaft (12) is fixedly mounted inside the rotating sleeve (11), and a ratchet (28) is rotatably mounted on the outer side of the fixed shaft (12), and a torsion spring (13) is nested inside the ratchet (28).

3. A hollow mold according to claim 2, characterized in that: A connecting rod (14) is fixedly mounted on one end of the rotating sleeve (11) away from the rotating rod (8), and a driven gear (15) is fixedly mounted on the outer side of the connecting rod (14).

4. A hollow mold according to claim 1, characterized in that: The lower mold (1) is provided with a main air cavity (18) and a secondary air cavity (19), and the main air cavity (18) and the secondary air cavity (19) are internally communicated, a main sealing sleeve (17) is slidably installed inside the main air cavity (18), and a tooth plate (16) is fixedly installed at one end of the main sealing sleeve (17) away from the main air cavity (18), and the tooth plate (16) is meshingly connected with the driven gear (15).

5. A hollow mold according to claim 4, characterized in that: A secondary sealing sleeve (20) is slidably mounted inside the secondary air cavity (19), a lifting rod (21) is fixedly mounted on the upper end of the secondary sealing sleeve (20), and the upper end surface of the lifting rod (21) is fixedly connected to the lower end surface of the lifting plate (7).

6. A hollow mold according to claim 1, characterized in that: A rotating shaft (22) is rotatably mounted inside the lower mold (1), and a torsion spring (23) and a winding wheel (24) are sleeved on the outer side of the rotating shaft (22), and the winding wheel (24) is fixedly connected to the rotating shaft (22). A traction rope (27) is wound around the outer side of the winding wheel (24), and one end of the traction rope (27) away from the winding wheel (24) is fixedly connected to one end of the main sealing sleeve (17) close to the tooth plate (16).

7. A hollow mold according to claim 6, characterized in that: A telescopic rod (25) is fixedly mounted on the upper end of the rotating shaft (22), and a shifting plate (26) is fixedly mounted on the upper end of the telescopic rod (25), and the shifting plate (26) and the telescopic rod (25) are located inside the lower mold (1).

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