Thermoplastic mold for water mixing valve

Abstract

A water mixing valve thermoplastic mold comprises a base, a central hollow layer arranged at the top of the base and a mold forming layer arranged at the top of the central hollow layer, a top plate is arranged at the top of the mold forming layer, fixing supports are arranged at the two ends of the central hollow layer respectively, and hydraulic cylinders are arranged on the sides, away from the central hollow layer, of the fixing supports; the mold forming layer comprises an upper mold cavity and a lower mold cavity, and two mold forming models are arranged in the center of the bottom of an inner cavity of the lower mold cavity; according to the thermoplastic mold for the water mixing valve, plastic raw materials can be guided into the mold forming cavity for mold forming through the designed feeding pipe, meanwhile, the position of the perforating shaft is designed, so that the perforating shaft can directly penetrate through the mold forming model, and a communicating hole is directly formed in the water mixing valve model after the raw materials are formed; meanwhile, the thread is arranged on the shaft body, so that a threaded connector can be directly formed when a water mixing valve model is formed, and therefore, the thermoplastic mold for the water mixing valve achieves the effects that drilling and thread arrangement can be completed through mold forming, and the production procedures are reduced.

Description

Technical Field

[0001] This invention relates to the technical field of thermoplastic molds, and in particular to a thermoplastic mold for a mixing valve. Background Technology

[0002] Plastic molds are tools used to process and shape plastic products, enabling mass production by giving plastic specific shapes and precise dimensions. They are widely used in the automotive, home appliance, and electronics industries. Their core structure includes a moving mold, a fixed mold, and systems for gating, temperature control, and ejection. Molding processes are classified into six categories: injection molding, compression molding, extrusion, blow molding, vacuum forming, and high-density polystyrene molding. A mixing valve is simply a valve that mixes hot and cold water. The valve itself cannot actually mix water; it only serves to mix water by connecting to hot and cold water pipes. Currently, existing mixing valves (such as...) Figure 7 As shown, the mixing valve is integrally formed by thermoplastic molding. However, the mixing valve has three tubes, two of which are vertical and interconnected by a central hole. A threaded connecting tube in the longitudinal design connects to one of the two vertical tubes. Therefore, existing mixing valves are removed after molding and require additional steps to drill holes and add threads to the valve body. Alternatively, drilling can be done directly during film formation using a perforated shaft. However, thread design still requires a secondary process after film formation, making the process cumbersome. This paper proposes a thermoplastic mold for mixing valves that allows drilling and threading to be completed immediately after thermoplastic cooling in the mold, thus reducing the number of steps and increasing production efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a thermoplastic mold for a mixing valve.

[0004] The objective of this invention is achieved through the following technical solution: A thermoplastic mold for a mixing valve includes: a base, a central hollow layer disposed on top of the base, a molding layer disposed on top of the central hollow layer, a top plate disposed on top of the molding layer, fixed supports disposed at both ends of the central hollow layer, and a hydraulic cylinder disposed on the side of the fixed supports away from the central hollow layer; the molding layer includes an upper mold cavity and a lower mold cavity, and two molding molds are disposed at the center of the bottom of the lower mold cavity; the hydraulic cylinder includes a movable push rod, a movable box is sleeved on the rod body of the movable push rod near the central hollow layer, and a perforated shaft is disposed on the side of the movable box cavity near the top; a gear ring is fixedly sleeved on the shaft body of the perforated shaft, and two... The perforated shafts extend from both sides into the molding layer and penetrate the two molding models in the inner cavity of the lower mold cavity. The rods of the two perforated shafts near the molding models are threaded, and a perforation head is provided on the side of the perforated shaft away from the movable push rod. Auxiliary fixing components are provided on both the front and back of the central hollow layer. Several support tubes are provided at equal intervals along the horizontal and vertical directions at the bottom of the inner cavity of the central hollow layer. Several cooling tubes are provided in the center of the inner cavity of the central hollow layer. Motors are provided at both ends of the base. A power gear is connected to the side of the motor near the outer wall of the base, and the power gear is designed perpendicularly to the gear ring on the perforated shaft.

[0005] In one embodiment, a mold groove adapted to the molded model is formed on the inner wall of the upper mold cavity near the lower mold cavity, and a plurality of feed pipes are connected through the top of the upper mold cavity, with one side of the feed pipes extending to the outer wall of the front of the molded layer.

[0006] In one embodiment, the fixed bracket includes support columns disposed on the left and right sides of the outer wall of the central hollow layer. A connecting plate is fixedly connected to the side of the support column away from the outer wall of the central hollow layer by bolts. The hydraulic cylinder is fixed in the center of the connecting plate, and the movable push rod passes through the connecting plate.

[0007] In one embodiment, the perforated shaft is provided with limit rings on both sides of the gear ring, and the perforated shaft is provided with threads on one end of the inner cavity of the movable box. A limiting plate is fixedly connected to the top of the inner wall of the movable box near the top plate by bolts. The limiting plate has a circular hole in the center and a threaded groove in the hole, and the threaded shaft of the perforated shaft passes through the limiting plate.

[0008] In one embodiment, a hydraulic pump is provided in the inner cavity of the base, and the hydraulic pump is connected to the hydraulic cylinder through a pipe. A transformer is provided in the inner cavity of the base, and the transformer is electrically connected to the motor.

[0009] In one embodiment, the movable box is located between the two frames of the fixed bracket, and the movable push rod is located at the bottom of the central cavity of the movable box, while the perforated shaft is located at the top of the central cavity of the movable box, and the perforated shaft and the movable push rod are perpendicular to each other.

[0010] In one embodiment, the outer wall of the base near the motor has a groove that matches the shape and size of the power gear, and the inner wall of the groove is smooth, and the power gear meshes with the gear ring.

[0011] In one embodiment, the auxiliary fixing member has a module at the top of the inner cavity near the central hollow layer. The module extends upward and is located on the front and back of the lower mold cavity, and cooperates with the molded model to form a molded cavity.

[0012] In one embodiment, the base, top plate, and molding layer are each provided with a plurality of mutually perpendicular guide post holes, and guide posts are inserted into the guide post holes of the base, top plate, and molding layer.

[0013] Compared with the prior art, the present invention has at least the following advantages: The present invention discloses a thermoplastic mold for a mixing valve. Through the design of an upper mold cavity, a lower mold cavity, a molding model designed in the lower mold cavity, and an auxiliary fixing component upper mold, a sealed molding cavity can be formed. At the same time, the designed feed pipe can introduce plastic raw material into the molding cavity for molding. The position of the perforated shaft is designed so that the perforated shaft can directly penetrate the molding model, so that the raw material can directly form a connecting hole in the mixing valve model after molding. At the same time, the shaft is provided with threads so that a threaded connection can be directly formed during the molding of the mixing valve model. Therefore, the thermoplastic mold for the mixing valve can complete the drilling and threading by molding, reducing its production steps. The present invention discloses a thermoplastic mold for a mixing valve. Through the design of the hydraulic cylinder, movable push rod and movable box, the hydraulic cylinder can drive the movable push rod to move the movable box back and forth within the fixed support. At the same time, through the positional relationship between the motor, power gear and gear ring, the perforated shaft can be pulled out after the raw material is formed in the mold cavity, so as to facilitate the workers to take out the formed mold later. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the side portion of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the top view of the present invention; Figure 4 This is a three-dimensional structural diagram of the side portion of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the top view of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the top view of the present invention; Figure 7 A 3D schematic diagram of the product's mixing valve; Figure 8 A 3D schematic diagram of the product's mixing valve; Figure 9 This is a three-dimensional schematic diagram of the perforated shaft of the present invention; Figure 10 This is a front perspective view of the insertion post of the present invention.

[0017] In the diagram: 1. Base; 2. Top plate; 3. Molding layer; 31. Upper mold cavity; 32. Lower mold cavity; 33. Film forming model; 4. Fixed bracket; 5. Motor; 51. Power gear; 6. Hydraulic cylinder; 61. Movable push rod; 62. Perforated shaft; 621. Insertion slot; 63. Gear ring; 64. Perforated head; 641. Insertion post; 642. Movable pressure block; 643. Telescopic rod; 644. Return spring; 645. Locking post; 646. Connecting rod; 7. Central hollow layer; 71. Support tube; 72. Auxiliary fixing parts; 73. Cooling pipe; 8. Movable box. Detailed Implementation

[0019] To facilitate understanding of the present invention, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention.

[0020] like Figure 1-7As shown, a thermoplastic mold for a mixing valve includes: a base 1, a central hollow layer 7 disposed on the top of the base 1, a molding layer 3 disposed on the top of the central hollow layer 7, a top plate 2 disposed on the top of the molding layer 3, fixed supports 4 disposed at both ends of the central hollow layer 7, and a hydraulic cylinder 6 disposed on the side of the fixed supports 4 away from the central hollow layer 7; the molding layer 3 includes an upper mold cavity 31 and a lower mold cavity 32, and two molding molds 33 are disposed at the center of the bottom of the lower mold cavity 32; the hydraulic cylinder 6 includes a movable push rod 61, a movable box 8 sleeved on the rod body of the movable push rod 61 near the central hollow layer 7, and a perforated shaft 62 disposed on the side of the center of the movable box 8 near the top; a gear ring is fixedly sleeved on the shaft body of the perforated shaft 62. 63. Two perforated shafts 62 extend from both sides into the molding layer 3 and penetrate the two molding models 33 in the inner cavity of the lower mold cavity 32. The shafts 62 near the molding models 33 are threaded. The perforated shafts 62 are provided with perforated heads 64 on the side away from the movable push rod 61. The front and back of the central hollow layer 7 are provided with auxiliary fixing parts 72. The bottom of the inner cavity of the central hollow layer 7 is provided with several support tubes 71 at equal intervals along the horizontal and vertical directions. Several cooling tubes 73 are provided in the center of the inner cavity of the central hollow layer 7. Motors 5 are provided at both ends of the base 1. The side of the motor 5 near the outer wall of the base 1 is connected to a power gear 51. The power gear 51 and the gear ring 63 on the perforated shaft 62 are designed to be perpendicular to each other.

[0021] Working principle: The operator injects the raw material into the upper mold cavity 31 and lower mold cavity 32 through the feed pipe on the molding layer 3. After the raw material cools and solidifies in the sealed upper mold cavity 31 and lower mold cavity 32, the motor 5 is started to drive the power gear 51 to rotate, causing the gear ring 63 meshing with it to rotate, thereby causing the piercing shaft 62 to rotate. Therefore, when the piercing shaft 62 rotates, the threaded rod on it will rotate in the threaded connector of the molding die (the piercing shaft 62 and the threaded tube in the threaded connector rotate in opposite directions), thereby causing the piercing shaft 62 to rotate and move away from the mold. After the threaded shaft 62 is unscrewed from the mold, the motor 5 stops working. At this time, the hydraulic cylinder 6 can be activated to move the movable push rod 61 to move the movable box 8 away from the molding layer 3, so that the entire perforated shaft 62 can be pulled out of the mold. At this time, the molded product can be taken out by opening the mold. After the raw material is formed, a connecting hole is directly formed in the mixing valve mold. At the same time, the thread on its shaft can directly form a threaded connection when the mixing valve mold is formed. Therefore, the thermoplastic mold of the mixing valve can complete the drilling and threading by forming the mold, reducing its production process.

[0022] like Figure 1-4As shown in the figure, in one embodiment, a model groove adapted to the molding model 33 is provided on the inner wall of the upper mold cavity 31 near the lower mold cavity 32. A plurality of feed pipes are connected through the top of the upper mold cavity 31, and one side of the feed pipe extends to the outer wall of the front surface of the molding layer 3. It should be noted that a one-way valve is provided at the end of the feed pipe far from the perforation shaft 62, which can effectively prevent the backflow phenomenon when the liquid raw material is introduced.

[0023] As Figure 1-6 As shown in the figure, in one embodiment, the fixed bracket 4 includes support columns provided on the left and right sides of the outer wall of the central hollow layer 7. One side of the support column far from the outer wall of the central hollow layer 7 is fixedly connected to a connecting plate by bolts. The hydraulic cylinder 6 is fixed in the center of the plate body of the connecting plate, and the movable push rod 61 penetrates through the connecting plate. It should be noted that the shape of the top view of the fixed bracket 4 is "L-shaped", and the shape and size of the top view of the movable box 8 are adapted to the shape and size of the middle empty slot of the fixed bracket 4, and the side of the fixed bracket 4 close to the movable box 8 is designed as a smooth plane.

[0024] As Figure 5-6 As shown in the figure, in one embodiment, limiting rings are provided on both sides of the shaft body of the perforation shaft 62 on both sides of the gear ring 63. A thread is provided on the shaft body of the perforation shaft 62 at one end in the inner cavity of the movable box 8. The top of the inner wall of the movable box 8 close to the top plate 2 is fixedly connected to a limiting plate by bolts. A circular hole is provided in the center of the limiting plate, and a thread groove is provided in the hole body thereof, and the threaded shaft body of the perforation shaft 62 is threaded through the limiting plate. It should be noted that the design of the limiting plate allows the perforation shaft 62 to move forward and backward to a certain extent when rotating.

[0025] As Figure 1 As shown in the figure, in one embodiment, a hydraulic pump is provided in the inner cavity of the base 1, and the hydraulic pump is connected through a pipeline with the hydraulic cylinder 6. A transformer is provided in the inner cavity of the base 1, and the transformer is electrically connected to the motor 5. It should be noted that a support block is provided in the center of the inner cavity of the base 1, the support pipe 71 in the central hollow layer 7 and the support block correspond up and down, and the pipe bodies of multiple cooling pipes 73 are located at the bottom of the lower mold cavity 32 and are in contact with the bottom of the lower mold cavity 32. One end of the cooling pipe 73 extends to the outer wall of the central hollow layer 7, which is convenient for introducing cooling water to accelerate the cooling and molding speed of the raw material.

[0026] As Figure 1-7As shown in one embodiment, the movable box 8 is located between the two frames of the fixed bracket 4, and the movable push rod 61 is located at the bottom of the central inner cavity of the movable box 8, while the perforated shaft 62 is located at the top of the central inner cavity of the movable box 8. The perforated shaft 62 and the movable push rod 61 are perpendicular to each other. It should be noted that the movable push rod 61 is fixedly connected between the rod body on one side of the inner cavity of the movable box 8 and the inner wall of the movable box 8, so that it can drive the movable box 8 to perform reciprocating movements.

[0027] like Figure 1-7 As shown in one embodiment, a groove matching the shape and size of the power gear 51 is formed on the outer wall of the base 1 near the motor 5, and the inner wall of the groove is smooth. The power gear 51 meshes with the gear ring 63. It should be noted that the side of the groove is circular, and the top of the groove near the perforated shaft 63 is open. The teeth of the top part of the power gear 51 are located in the opening. This design allows the motor 5 to drive the power gear 51 to rotate, which in turn drives the gear ring 63 to rotate, thereby allowing the perforated shaft 62 to rotate.

[0028] like Figure 1-7 As shown in one embodiment, a module is provided at the top of the inner cavity of the auxiliary fixing member 72 near the central hollow layer 7. This module extends upward and is located on the front and back of the lower mold cavity 32, cooperating with the forming mold 33 to form a forming cavity. It should be noted that the auxiliary fixing member 72, together with the upper mold cavity 31, the lower mold cavity 32 and the forming mold 33, can form a simulated forming cavity, and a channel is provided on the plate between the two mold cavities of the lower mold cavity 32 to allow the raw materials to communicate with each other.

[0029] like Figure 1-3 As shown in one embodiment, the base 1, top plate 2, and molding layer 3 are each provided with a plurality of mutually perpendicular guide post holes, and guide posts are inserted into the guide post holes of the base 1, top plate 2, and molding layer 3. It should be noted that this design allows for more precise installation of the base 1, top plate 2, and molding layer 3 by workers, preventing misalignment during installation.

[0030] like Figure 9-10As shown in the specific embodiment, the threaded position on the perforating shaft 62 is prone to damage due to high temperature because it needs to be inserted into the mold cavity for a long time and rotated and pulled back and forth. Therefore, to solve the problem of damage to the perforating shaft 62, it is designed to be separated from the perforating head 64. Specifically, the perforating head (64) is provided with a post (641) on the side near the perforating shaft (62), and the perforating shaft (62) is provided with a plug on the side near the perforating head (64). The slot (621) and the insert (641) are hollow. A baffle is provided in the center of the inner cavity. A connecting rod (645) is slidably connected to the center of both sides of the baffle. The two ends of the connecting rod (645) extend away from the baffle and extend to the inner wall of the insert (641). A locking post (645) is provided on the bottom of the connecting rod (645). Movable pressure blocks (642) are provided on both sides of the top of the outer wall of the insert (641), and round holes are opened on both sides of the bottom.

[0031] It should be noted that the diameter of the side of the locking post 645 is the same as the diameter of the side of the circular hole, and the locking post 645 coincides with the circular hole. The top of the connecting rod 646 is connected to the movable pressure block 642. Therefore, pressing the movable pressure block 642 will drive the entire connecting rod 646 to move into the inner cavity of the insertion post 641, thereby causing the locking post 645 to be retracted into the inner cavity of the insertion post 641. Therefore, this design, along with the openings on both sides of the outer wall of the insertion groove 642 and the locking grooves on the groove wall that cooperate with the locking post 645, allows the operator to replace the perforating head 64 as needed. When replacing, simply pinch the movable pressure block 642 that pops out from the opening on both sides of the perforating shaft 62 to move it into the insertion post 641. At this time, pulling the perforating head 64 will pull it off the perforating shaft 61. This will not affect the original function of the device and will facilitate the replacement of the damaged part.

Claims

1. A thermoplastic mold for a mixing valve, comprising: A base (1), a central hollow layer (7) set at the top of the base (1), a molding layer (3) set at the top of the central hollow layer (7), and a top plate (2) set at the top of the molding layer (3). The central hollow layer (7) is characterized in that fixed supports (4) are respectively set at both ends of the central hollow layer (7), and a hydraulic cylinder (6) is set on the side of the fixed support (4) away from the central hollow layer (7); the molding layer (3) includes an upper mold cavity (31) and a lower mold cavity (32), and two molding molds (33) are set at the center of the bottom of the lower mold cavity (32); the hydraulic cylinder (6) includes a movable push rod (61), and a movable box (8) is sleeved on the rod body of the movable push rod (61) near the central hollow layer (7), and a perforated shaft (62) is set on the side of the center of the movable box (8) near the top; a gear ring (63) is fixedly sleeved on the shaft body of the perforated shaft (62), and the two perforated shafts are connected to the gear ring (63). The perforated shaft (62) extends from both sides into the molding layer (3) and penetrates the two molding models (33) in the inner cavity of the lower mold cavity (32). The two perforated shafts (62) are threaded on the rods near the molding model (33). The perforated shaft (62) is provided with a perforated head (64) on the side away from the movable push rod (61). The front and back of the central hollow layer (7) are provided with auxiliary fixing parts (72). The bottom of the inner cavity of the central hollow layer (7) is provided with several support tubes (71) at equal distances along the horizontal and vertical directions. Several cooling tubes (73) are provided in the center of the inner cavity of the central hollow layer (7). The base (1) is provided with motors (5) at both ends. The motors (5) are connected to a power gear (51) on the side near the outer wall of the base (1). The power gear (51) and the gear ring (63) on the perforated shaft (62) are designed perpendicular to each other.

2. The thermoplastic mold for a mixing valve according to claim 1, characterized in that, The upper mold cavity (31) has a mold groove on the inner wall of the side near the lower mold cavity (32) that is adapted to the molded model (33). The top of the upper mold cavity (31) is connected to several feed pipes, one side of which extends to the outer wall of the front of the molded layer (3).

3. The thermoplastic mold for a mixing valve according to claim 1, characterized in that, The fixed bracket (4) includes support columns on the left and right sides of the outer wall of the central hollow layer (7). A connecting plate is fixedly connected to the side of the support column away from the outer wall of the central hollow layer (7) by bolts. The hydraulic cylinder (6) is fixed in the center of the connecting plate, and the movable push rod (61) passes through the connecting plate.

4. The thermoplastic mold for a mixing valve according to claim 1, characterized in that, The perforated shaft (62) has limit rings on both sides of the gear ring (63). The shaft of the perforated shaft (62) at one end of the inner cavity of the movable box (8) has threads. The top of the inner wall of the movable box (8) near the top plate (2) is fixedly connected to a limiting plate by bolts. The limiting plate has a round hole in the center and a threaded groove in the hole. The threaded shaft of the perforated shaft (62) passes through the limiting plate.

5. A thermoplastic mold for a mixing valve according to claim 1, characterized in that, A hydraulic pump is installed in the inner cavity of the base (1), and the hydraulic pump is connected to the hydraulic cylinder (6) through a pipe. A transformer is installed in the inner cavity of the base (1), and the transformer is electrically connected to the motor (5).

6. The thermoplastic mold for a mixing valve according to claim 1, characterized in that, The movable box (8) is located between the two frames of the fixed bracket (4), and the movable push rod (61) is located at the bottom of the central cavity of the movable box (8), while the perforated shaft (62) is located at the top of the center of the cavity of the movable box (8). The perforated shaft (62) and the movable push rod (61) are perpendicular to each other.

7. A thermoplastic mold for a mixing valve according to claim 1, characterized in that, The base (1) has a groove on the outer wall near the motor (5) that matches the shape and size of the power gear (51), and the inner wall of the groove is smooth. The power gear (51) meshes with the gear ring (63).

8. A thermoplastic mold for a mixing valve according to claim 1, characterized in that, The auxiliary fixing member (72) has a module at the top of the inner cavity near the central hollow layer (7). The module extends upward and is located on the front and back of the lower mold cavity (32), and cooperates with the molded model (33) to form a molded cavity.

9. A thermoplastic mold for a mixing valve according to claim 1, characterized in that, The base (1), top plate (2) and molding layer (3) are each provided with several mutually perpendicular guide post holes, and guide posts are inserted into the guide post holes of the base (1), top plate (2) and molding layer (3).

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