Irrigation timer water inlet threaded knob forming mold

Abstract

The utility model discloses a forming die for a water inlet threaded knob of an irrigation timer, and relates to the technical field of dies. Comprising an upper die and a lower die. The upper mold core and the lower mold core are respectively provided with a plurality of groups of cooling water paths and are matched with circulating cooling liquid of an industrial refrigerator, so that the integral forming efficiency of a threaded knob product is remarkably improved, threaded mold core internal cooling is additionally added especially for a threaded inner hole part, the temperature gradient of a key forming area is accurately controlled, the cooling time is greatly shortened, and the production efficiency is improved. Combined with the composite motion of the rotary demolding mechanism and the pushing mechanism, synchronous rotary ejection of a multi-thread mold core is achieved through gear linkage, the problem of deep thread mold sticking is effectively solved, batch rapid demolding is achieved while the product integrity is guaranteed, a guide rod and a buffer rod are cooperatively positioned, the forming process is stable and reliable, and the production efficiency is improved. The forming die is particularly suitable for precise and efficient production of knob products with internal threads, and the forming speed, the product yield and the service life of the die are comprehensively improved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a mold for forming a threaded knob for an irrigation timer inlet. Background Technology

[0002] Molds are core tools in industrial manufacturing used for shaping products. Their design and application directly affect molding efficiency and precision. The production of the irrigation timer inlet threaded knob requires mold forming. The irrigation timer inlet threaded knob is a control knob on the timer, and it has internal threads that need to be molded. However, existing threaded knob production molds still have the following shortcomings in use:

[0003] Existing molds for producing threaded knobs with internal threads generally use a mechanism for demolding by rotating the threaded core. However, the mold cools down slowly, and it is difficult to control the molding time by relying solely on natural cooling. This can lead to damage to the threaded part or the outside of the knob during demolding because it is not fully formed, affecting processing efficiency and product yield, resulting in unsatisfactory performance. Utility Model Content

[0004] This utility model provides a molding die for a threaded knob at the inlet of an irrigation timer to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a molding die for a threaded knob at the inlet of an irrigation timer, comprising an upper die and a lower die. The upper die has an upper core inside, and the upper core has at least one set of upper cooling water channels inside. The lower die has a lower core corresponding to the upper core inside, and the lower core has at least one set of lower cooling water channels inside. The lower die also has a rotary demolding mechanism inside, which includes several threaded cores with one end extending into the lower core.

[0006] Furthermore, the inlet and outlet of the upper cooling water channel extend to one side of the upper mold, and the number of lower cooling water channels is not less than two sets, with the inlet and outlet of the lower cooling water channel extending to one side of the lower mold.

[0007] Furthermore, the threaded core has a thread on one end extending into the lower core that matches the inner hole of the molded product.

[0008] Furthermore, a pad first and a pad second are sequentially provided at the bottom of the lower mold. The bottom of the pad second is connected to a base plate via a mold foot. A driving cavity is provided between the pad first and the pad second.

[0009] Furthermore, the rotary demolding mechanism also includes a reduction motor, a main gear, a transmission gear, and a secondary gear. The reduction motor is located on one side of the pad, the output end of the reduction motor is provided with the main gear, and the secondary gear is rotatably located at the center of the drive cavity.

[0010] Furthermore, the outer side of the threaded core is fitted with a demolding gear located inside the drive cavity, and several demolding gears are sewn at equal intervals on the outside of the auxiliary gear, and several demolding gears mesh with the auxiliary gear.

[0011] Furthermore, the transmission gear is rotatably disposed at one side opening of the drive cavity, and the main gear is connected to one or two auxiliary gears through meshing transmission gears.

[0012] Furthermore, the bottom end of the threaded core is rotatably provided with a push mechanism connector via a bearing, and the interior of the base plate is provided with a waist-shaped hole that fits into the bottom of the push mechanism connector. One side of the push mechanism connector is provided with an inlet and an outlet for circulating coolant into the threaded core.

[0013] Furthermore, the top of the upper mold is provided with a top plate, and the interior of the top plate is provided with a material cylinder that communicates with the upper core and the lower core. Each of the four corners of the top plate is provided with a guide rod that passes through the interior of the upper mold, the lower mold, the first pad, and the second pad in sequence and extends into the interior of the mold foot.

[0014] Furthermore, the first pad is provided with a stabilizing rod whose top end penetrates through the lower mold and extends into the upper mold. The lower mold is also provided with a buffer rod whose bottom end extends into the first pad. A spring is also sleeved on the buffer rod between the lower mold and the first pad.

[0015] Compared with the prior art, this utility model provides a molding die for an irrigation timer inlet threaded knob, which has the following advantages:

[0016] This irrigation timer inlet threaded knob molding die features multiple cooling water channels on the upper and lower cores, combined with circulating coolant from an industrial chiller. This significantly accelerates the overall molding efficiency of the threaded knob product. Specifically, it incorporates additional internal cooling for the threaded inner hole area, precisely controlling the temperature gradient in key molding zones and drastically shortening cooling time. The combined motion of the rotary demolding mechanism and the ejection mechanism, along with gear linkage, enables simultaneous rotation and ejection of multiple threaded cores, effectively solving the problem of deep thread sticking to the mold. This ensures product integrity while achieving rapid batch demolding. Guide rods and buffer rods work together to ensure stable and reliable molding. It is particularly suitable for the precision and efficient production of knobs with internal threads, comprehensively improving molding speed, product yield, and mold lifespan. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the upper mold structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the drive cavity structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the upper core structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the lower core structure of this utility model;

[0023] Figure 7 This is a schematic diagram of the lower cooling water channel structure of this utility model;

[0024] Figure 8 This is a schematic diagram of the rotary demolding mechanism of this utility model.

[0025] In the diagram: 1. Upper mold; 11. Upper core; 12. Upper cooling water channel; 13. Top plate; 14. Barrel; 15. Guide rod; 2. Lower mold; 21. Lower core; 22. Rotary demolding mechanism; 221. Threaded core; 222. Gear motor; 223. Main gear; 224. Transmission gear; 225. Secondary gear; 226. Demolding gear; 227. Push mechanism connector; 23. Lower cooling water channel; 24. Pad plate one; 25. Pad plate two; 26. Drive cavity; 27. Base plate; 271. Waist-shaped hole; 28. Stabilizing rod; 29. ​​Buffer rod; 291. Spring. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-8This utility model discloses a molding die for a threaded knob at the inlet of an irrigation timer, comprising an upper die 1 and a lower die 2. The upper die 1 has an upper core 11 inside, and the upper core 11 has at least one set of upper cooling water channels 12 inside. The lower die 2 has a lower core 21 corresponding to the upper core 11 inside, and the lower core 21 has at least one set of lower cooling water channels 23 inside. The lower die 2 also has a rotary demolding mechanism 22 inside, which includes a plurality of threaded cores 221 with one end extending into the lower core 21.

[0028] Specifically, the inlet and outlet of the upper cooling water channel 12 extend to one side of the upper mold 1, and the number of lower cooling water channels 23 is not less than two sets, with the inlet and outlet of the lower cooling water channel 23 extending to one side of the lower mold 2.

[0029] In this embodiment, coolant is introduced into the inlet through an industrial refrigeration unit or an ice water chiller and recovered through the outlet. Since a large portion of the bottom of the threaded knob product cavity is embedded inside the lower core 21, at least two sets of lower cooling water channels 23 are set inside the lower core. The upper cooling water channel 12 inside the upper core 11 only needs to cool the top of the threaded knob, which can be achieved with just one set. The structure is simplified and more energy-efficient. The circulating coolant through the upper cooling water channel 12 and the lower cooling water channel 23 accelerates the molding of the threaded knob product and improves the production efficiency. Compared with the demolding of the threaded knob product formed by natural cooling, the molding time is shortened, and the situation where the threaded knob product is not fully formed and the threaded core 221 rotates and damages the product during demolding will not occur.

[0030] Specifically, the threaded core 221 has a thread on one end extending into the lower core 21 that matches the inner hole of the molded product.

[0031] In this embodiment, when the formed threaded knob product is demolded, the threaded core 221 is driven by the geared motor 222 to rotate and rotate the threaded knob product to achieve demolding.

[0032] Specifically, the bottom of the lower mold 2 is provided with a first pad 24 and a second pad 25 in sequence. The bottom of the second pad 25 is connected to a base plate 27 through a mold foot. A driving cavity 26 is provided between the first pad 24 and the second pad 25.

[0033] In this embodiment, the drive cavity 26 is used to accommodate the transmission gear 224, the auxiliary gear 225, and the demolding gear 226, and integrates the transmission gear 224, the auxiliary gear 225, and the demolding gear 226 inside the drive cavity 26. The integration is high and the later maintenance is also more convenient.

[0034] Specifically, the rotary demolding mechanism 22 further includes a reduction motor 222, a main gear 223, a transmission gear 224, and a secondary gear 225. The reduction motor 222 is disposed on one side of the pad 24. The output end of the reduction motor 222 is provided with the main gear 223. The secondary gear 225 is rotatably disposed at the center of the drive cavity 26. The threaded core 221 is sleeved with a demolding gear 226 located inside the drive cavity 26. Several demolding gears 226 are sewn at equal intervals on the outside of the secondary gear 225, and several demolding gears 226 mesh with the secondary gear 225. The transmission gear 224 is rotatably disposed at the opening on one side of the drive cavity 26. The main gear 223 is connected to one or two secondary gears 225 through meshing with the transmission gear 224.

[0035] In this implementation scheme, during demolding, the reduction motor 222 is started, which drives the main gear 223 to rotate. The main gear 223 drives the transmission gear 224 to rotate, and the transmission gear 224 drives one or two demolding gears 226 to rotate. This causes the demolding gears 226 to drive the secondary gear 225 to rotate, and finally the remaining demolding gears 226 are driven by the secondary gears 225 to rotate. The demolding gears 226 and the threaded core 221 are connected by a flat key transmission, so that the starting reduction drive can drive all the threaded cores 221 to rotate and demold simultaneously. Each threaded core 221 corresponds to a threaded knob product, realizing mass production and further improving production efficiency.

[0036] Specifically, the bottom end of the threaded core 221 is rotatably provided with a push mechanism connector 227 via a bearing. The bottom plate 27 is provided with an oblong hole 271 that fits into the bottom of the push mechanism connector 227. One side of the push mechanism connector 227 is provided with an inlet and an outlet for circulating coolant into the threaded core 221.

[0037] In this embodiment, the oblong hole 271 limits the push mechanism connector 227, preventing it from rotating. The push mechanism connector 227 has a coolant channel connected to the inside of the threaded core 221. Coolant circulates into the threaded core 221 through the inlet and outlet, accelerating the forming speed of the threaded portion of the threaded knob product and eliminating minor flash. This design reduces the risk of damage to the threaded portion of the threaded knob product due to incomplete forming when the threaded core 221 is rotated, improving product forming efficiency and yield. The push mechanism connector 227 and the threaded core 221 are connected by a sealed bearing. The push mechanism uses a hydraulic cylinder or motor and ball screw mechanism. The dynamic cooperation between the oblong hole 271 and the push mechanism connector allows the threaded core 221 to be axially ejected simultaneously during rotational demolding, achieving a "rotation + push" composite demolding action and solving the problem of deep thread sticking to the mold.

[0038] Specifically, the top of the upper mold 1 is provided with a top plate 13, and the inside of the top plate 13 is provided with a material cylinder 14 that communicates with the upper core 11 and the lower core 21. Each of the four corners of the top plate 13 is provided with a guide rod 15, one end of which passes through the interior of the upper mold 1, the lower mold 2, the first pad 24, and the second pad 25 and extends into the interior of the mold foot.

[0039] In this embodiment, the barrel 14 is conical. The conical diffusion structure of the barrel 14 controls the temperature difference at the melt flow front within a very small range, significantly reducing defects in the weld line of the product. The setting of the guide rod 15 makes the mold separation process between the upper mold 1 and the lower mold 2 more stable and prevents misalignment.

[0040] Specifically, the pad 24 is provided with a stabilizing rod 28 whose top end penetrates the lower mold 2 and extends into the upper mold 1. The lower mold 2 is also provided with a buffer rod 29 whose bottom end extends into the pad 24. A spring 291 is also sleeved on the buffer rod 29 and located between the lower mold 2 and the pad 24.

[0041] In this embodiment, the number of buffer rods 29 and stabilizing rods 28 is the same. The buffer rods 29 are located on one side of the stabilizing rods 28. The design of the buffer rods 29 and springs 291 effectively prevents damage to the parting surface and improves the overall stability and service life of the mold.

[0042] In summary, this irrigation timer inlet threaded knob molding die, through the upper core 11 and lower core 21 respectively setting multiple sets of cooling water channels and cooperating with the industrial refrigeration unit circulating coolant, significantly accelerates the overall molding efficiency of threaded knob products. In particular, the additional internal cooling of the threaded inner hole area by the threaded core 221 precisely controls the temperature gradient of the key molding area and greatly shortens the cooling time. Combined with the compound motion of the rotary demolding mechanism 22 and the push mechanism, the synchronous rotation and ejection of multiple threaded cores 221 through gear linkage effectively solves the problem of deep thread sticking to the mold. While ensuring product integrity, it achieves rapid batch demolding. The guide rod 15 and the buffer rod 29 work together to ensure stable and reliable molding process. It is particularly suitable for the precision and efficient production of products with internal threaded knobs, comprehensively improving molding speed, product yield and mold life.

[0043] 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.

Claims

1. A molding die for an irrigation timer inlet threaded knob, comprising an upper die (1) and a lower die (2), characterized in that: The upper mold (1) is provided with an upper core (11) inside, and the upper core (11) is provided with at least one set of upper cooling water channels (12). The lower mold (2) is provided with a lower core (21) corresponding to the upper core (11) inside, and the lower core (21) is provided with at least one set of lower cooling water channels (23). The lower mold (2) is also provided with a rotary demolding mechanism (22) inside, and the rotary demolding mechanism (22) includes a plurality of threaded cores (221) with one end extending into the interior of the lower core (21).

2. The molding die for the threaded knob of the irrigation timer inlet according to claim 1, characterized in that: The inlet and outlet of the upper cooling water channel (12) extend to one side of the upper mold (1), and the number of the lower cooling water channels (23) is not less than two sets, with the inlet and outlet of the lower cooling water channels (23) extending to one side of the lower mold (2).

3. The molding die for the threaded knob of the irrigation timer inlet according to claim 1, characterized in that: The threaded core (221) extends into the lower core (21) and has a thread that matches the inner hole of the molded product.

4. The molding die for the threaded knob of the irrigation timer inlet according to claim 1, characterized in that: The bottom of the lower mold (2) is provided with a first pad (24) and a second pad (25) in sequence. The bottom of the second pad (25) is connected to a base plate (27) through a mold foot. A driving cavity (26) is provided between the first pad (24) and the second pad (25).

5. The molding die for the threaded knob of the irrigation timer inlet according to claim 1, characterized in that: The rotary demolding mechanism (22) also includes a geared motor (222), a main gear (223), a transmission gear (224), and a secondary gear (225). The geared motor (222) is located on one side of the pad (24). The output end of the geared motor (222) is provided with the main gear (223), and the secondary gear (225) is rotatably located at the center of the drive cavity (26).

6. The molding die for the threaded knob of the irrigation timer inlet according to claim 1, characterized in that: The threaded core (221) is fitted with a demolding gear (226) located inside the drive cavity (26). Several demolding gears (226) are sewn at equal intervals on the outside of the auxiliary gear (225), and several demolding gears (226) mesh with the auxiliary gear (225).

7. The molding die for an irrigation timer inlet threaded knob according to claim 5, characterized in that: The transmission gear (224) is rotatably disposed at one side opening of the drive cavity (26), and the main gear (223) is connected to one or two auxiliary gears (225) through meshing with the transmission gear (224).

8. The molding die for the threaded knob of the irrigation timer inlet according to claim 4, characterized in that: The bottom end of the threaded core (221) is provided with a push mechanism connector (227) rotatably mounted on a bearing. The bottom plate (27) is provided with a waist-shaped hole (271) that fits into the bottom of the push mechanism connector (227). The push mechanism connector (227) is provided with an inlet and an outlet for circulating coolant into the threaded core (221) on one side.

9. The molding die for the threaded knob of the irrigation timer inlet according to claim 1, characterized in that: The top of the upper mold (1) is provided with a top plate (13). Inside the top plate (13) is a material cylinder (14) that communicates with the upper core (11) and the lower core (21). Inside each of the four corners of the top plate (13) is a guide rod (15) that passes through the upper mold (1), the lower mold (2), the first pad (24), and the second pad (25) and extends into the mold foot.

10. A molding die for an irrigation timer inlet threaded knob according to claim 4, characterized in that: The inside of the pad (24) is provided with a stabilizing rod (28) whose top end passes through the lower mold (2) and extends into the upper mold (1). The inside of the lower mold (2) is also provided with a buffer rod (29) whose bottom end extends into the pad (24). A spring (291) located between the lower mold (2) and the pad (24) is also sleeved on the buffer rod (29).

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