Injection mold of floor brush gearbox of sweeper

Abstract

The utility model discloses an injection mold for a floor brush gear box of a sweeper, which comprises a base, a lower mold is mounted in the middle of the upper end face of the base, a movable seat is arranged above the lower mold, and an upper mold is mounted at the bottom of the movable seat; the adjusting plate is arranged in the middle of the two sides of the upper die, a clamping plate is installed on the side face of the other end of the adjusting plate, and the clamping plate is connected with the adjusting plate through a rotating shaft; the cooling pipes are arranged in the upper mold and the lower mold and are distributed in a rectangular spiral mode, a water inlet pipe and a water outlet pipe are arranged at the two ends of each cooling pipe correspondingly, a cooling liquid box is arranged in the base, the water outlet pipes extend into the cooling liquid box, and circulating pumps are installed on the two sides of the cooling liquid box correspondingly. And one end of the circulating pump is connected to the interior of the cooling liquid tank. The injection mold can avoid deformation on the premise of achieving convenient demolding of the gearbox.

Description

Technical Field

[0001] The utility model relates to the technical field of production of a floor brush gear box for a sweeping machine, in particular to an injection mold for a floor brush gear box for a sweeping machine. Background Art

[0002] As an important part of modern smart home, the floor brush gearbox is one of the key components of the floor sweeping robot. Its quality and precision have an important impact on the overall performance of the floor sweeping robot. The traditional floor brush gearbox manufacturing method often has problems such as low production efficiency and insufficient precision, which cannot meet the market demand for high quality and high efficiency of the floor sweeping robot. Therefore, the floor brush gearbox injection mold of the floor sweeping robot came into being, which can accurately replicate the various components of the gearbox and ensure the dimensional accuracy and surface quality of the gearbox. At the same time, the injection mold has high production efficiency and can achieve mass production.

[0003] For example, the Chinese authorized patent with announcement number CN211105211U, "An injection molding device for the shell of a sweeping robot", includes a base and an injection molding cylinder. An injection molding support is provided on one side of the upper end of the base. A driving device is fixedly connected to one side of the upper end of the injection molding support. The driving device includes a stepping motor, a gear, and a rack. An injection molding bucket is connected to the upper end of the injection molding cylinder. A piston rod is provided inside the injection molding cylinder. The piston rod is fixedly connected to the driving device. An injection molding tube is connected to the side of the injection molding cylinder away from the driving device. An injection molding module is connected to the lower end of the injection molding tube. A hydraulic rod is connected to the end of the injection molding module away from the injection molding cylinder. A slider is provided at the lower end of the injection molding module. The base is provided with a slide groove below the injection molding module, and the slider is sleeved in the slide groove.

[0004] Although the above-mentioned prior art can realize the injection molding of the floor brush gear box of the sweeper, it is troublesome to demold the gear box after injection molding. In addition, due to its own high temperature, local deformation is prone to occur during the demolding process, thereby affecting the molding quality. Therefore, it does not meet the existing needs. In this regard, we propose an injection mold for the floor brush gear box of the sweeper. Utility Model Content

[0005] The purpose of the utility model is to provide an injection mold for a floor brush gear box of a sweeping machine, so as to solve the problem of how to avoid deformation of the injection mold proposed in the above background technology while realizing convenient demoulding of the gear box.

[0006] To achieve the above object, the utility model provides the following technical solutions: an injection mold of a floor brush gear box of a sweeping machine, comprising a base, a lower mold is installed at the middle position of the upper end surface of the base, and the lower mold is fixed to the base by bolts, a movable seat is arranged above the lower mold, an upper mold is installed at the bottom of the movable seat, and the upper mold is adapted to the lower mold; and further comprising:

[0007] An adjusting plate is arranged at the middle position of both sides of the upper mold, and one end of the adjusting plate is connected to the upper mold through a rotating shaft, a driving motor is installed on one side of the rotating shaft at one end of the adjusting plate, the housing of the driving motor is fixed to the upper mold, and the output shaft of the driving motor is connected to the rotating shaft at one end of the adjusting plate, a clamping plate is installed on the side of the other end of the adjusting plate, and the clamping plate is connected to the adjusting plate through the rotating shaft;

[0008] A cooling pipe is arranged inside the upper mold and the lower mold, and the cooling pipe is distributed in a rectangular spiral shape. A water inlet pipe and a water outlet pipe are respectively arranged at both ends of the cooling pipe. A coolant tank is arranged inside the base, and the water outlet pipes extend to the inside of the coolant tank. Circulation pumps are installed on both sides of the coolant tank, one end of the circulation pump is connected to the inside of the coolant tank, and the other side of the circulation pump is connected to the water inlet pipe of the cooling pipe.

[0009] Preferably, a top plate is provided above the movable seat, and a servo motor is fixedly installed at the four corners of the upper end surface of the top plate, and threaded rods are installed at the four corners between the base and the top plate, the threaded rods are rotatably connected to the base and the top plate, and the output shaft of the servo motor is connected to the upper end of the threaded rod through a coupling, and a sliding block is installed on the outside of the threaded rod, the inner screw hole of the sliding block is adapted to the threaded rod, and one side of the sliding block is fixed to the movable seat by bolts.

[0010] Preferably, an evaporator is installed below the coolant tank, the lower end of the evaporator is fixed to the base, and a heat-conducting metal plate is provided between the upper end of the evaporator and the coolant tank.

[0011] Preferably, positioning grooves are provided at the front and rear of the interior of the upper mold, fixing columns are installed at the front and rear of the upper end of the lower mold, and the fixing columns are plugged and fixed to the lower mold, an installation cavity is installed at the upper end of the fixing column, a slidingly connected movable block is provided inside the installation cavity, a pressure sensor is fixedly installed at the bottom of the installation cavity, and a spring is installed between the pressure sensor and the movable block.

[0012] Preferably, an injection device is provided at a middle position of the upper end surface of the movable seat, and the injection device is fixed to the movable seat by bolts.

[0013] Preferably, a torsion spring is installed on the rotating shaft at the connection between the clamping plate and the adjusting plate.

[0014] Preferably, the cavity formed when the upper mold and the lower mold are closed is a molding cavity of the gear box.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model is provided with adjustment plates on both sides of the movable seat. Under normal circumstances, the adjustment plates are stored inside the movable seat. After the gear box housing is formed and cooled, the movable seat drives the upper mold to rise to a set height. At this time, the driving motor is turned on, and its output shaft drives the adjustment plate to rotate until the clamping plate contacts the molded part. One side of the clamping plate is connected to the adjustment plate through a rotating shaft, and can be fine-adjusted according to the upper contour of the molded part, so that the clamping plate can fit the molded part more closely. After clamping is completed, as the movable seat continues to rise, it drives the molded part to separate from the lower mold, so that the staff can perform the material collection operation. The mechanism has high flexibility, stable clamping, and reasonable use of mold space.

[0017] 2. The utility model is provided with a molding cooling mechanism. After the gear box between the upper mold and the lower mold is molded, the refrigeration system is turned on, and the refrigerant is compressed in the compressor to increase its pressure and temperature. The refrigerant absorbs heat from the surrounding environment, and then the high-temperature and high-pressure refrigerant enters the condenser. In the condenser, the refrigerant exchanges heat with the external environment through the heat sink or pipe, gradually cools itself and turns into liquid. The liquid refrigerant passes through the expansion valve and enters the evaporator. Under the action of the expansion valve, the pressure and temperature of the refrigerant are sharply reduced, so that it evaporates quickly, absorbs heat from the material around the evaporator, reduces its temperature, and introduces the cold into the interior of the coolant tank to reduce the temperature of the coolant. By turning on the circulating pumps on both sides, the low-temperature coolant is transported to the interior of the upper mold and the lower mold, and moves in the annularly distributed cooling pipes, generating heat exchange between the molds, and transferring the low temperature to the molded gear box shell, forming rapid cooling, and achieving the purpose of rapid molding. The mechanism can assist the demoulding mechanism to work, ensuring that the gear box shell remains in a hard state during demoulding, and avoiding deformation during the demoulding process.

[0018] 3. The utility model is provided with a mold alignment verification mechanism. The output shaft of the servo motor drives the threaded rod to rotate, and the rotational motion is converted into linear motion under the friction with the sliding block, so as to drive the upper mold to move downward through the movable seat. Under normal circumstances, the upper mold and the lower mold remain aligned, and the fixed column can enter the interior of the positioning groove without hindrance. If the upper mold and the lower mold are not aligned due to aging of parts, as the upper mold descends, the edge of the positioning groove will preferentially contact the movable block, so that the movable block extends toward the inside of the fixed column until it contacts the pressure sensor. At this time, an electrical signal is generated to the processor, and the processor stops the operation of the servo motor and sends an alarm to notify the staff to handle it. This mechanism can effectively avoid the situation of mold misalignment due to aging of equipment, and can be calibrated in time to avoid the expansion of economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the upper mold and the lower mold structure of the utility model;

[0021] Figure 3 For the utility model Figure 2 A partial enlarged view of the middle A area;

[0022] Figure 4 This is a bottom view of the movable seat of the utility model;

[0023] Figure 5 For the utility model Figure 4 A partial enlarged view of area B in the middle.

[0024] In the figure: 1. base; 2. movable seat; 3. upper mold; 4. lower mold; 5. sliding block; 6. top plate; 7. threaded rod; 8. servo motor; 9. injection device; 10. cooling pipe; 11. adjustment plate; 12. coolant tank; 13. circulation pump; 14. evaporator; 15. clamping plate; 16. drive motor; 17. fixed column; 18. positioning groove; 19. movable block; 20. pressure sensor; 21. spring; 22. torsion spring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] See also Figure 1-5 The utility model provides an embodiment: an injection mold of a floor brush gear box of a sweeping machine, comprising a base 1, a lower mold 4 is installed at the middle position of the upper end surface of the base 1, and the lower mold 4 is fixed to the base 1 by bolts, a movable seat 2 is arranged above the lower mold 4, an upper mold 3 is installed at the bottom of the movable seat 2, and the upper mold 3 is adapted to the lower mold 4; and further comprising:

[0027] An adjusting plate 11 is arranged at the middle position of both sides of the upper mold 3, and one end of the adjusting plate 11 is connected to the upper mold 3 through a rotating shaft, a driving motor 16 is installed on one side of the rotating shaft at one end of the adjusting plate 11, the housing of the driving motor 16 is fixed to the upper mold 3, and the output shaft of the driving motor 16 is connected to the rotating shaft at one end of the adjusting plate 11, and a clamping plate 15 is installed on the side of the other end of the adjusting plate 11, and the clamping plate 15 is connected to the adjusting plate 11 through a rotating shaft;

[0028] The cooling pipe 10 is arranged inside the upper mold 3 and the lower mold 4, and the cooling pipe 10 is distributed in a rectangular spiral shape. A water inlet pipe and a water outlet pipe are respectively arranged at both ends of the cooling pipe 10. A coolant tank 12 is arranged inside the base 1, and the water outlet pipes extend to the inside of the coolant tank 12. Circulating pumps 13 are installed on both sides of the coolant tank 12. One end of the circulating pump 13 is connected to the inside of the coolant tank 12, and the other side of the circulating pump 13 is connected to the water inlet pipe of the cooling pipe 10.

[0029] When in use, under normal circumstances, the adjustment plate 11 is stored inside the movable seat 2. After the gear box shell is formed and cooled, the movable seat 2 drives the upper mold 3 to rise to the set height. At this time, the drive motor 16 is turned on, and its output shaft drives the adjustment plate 11 to rotate until the clamping plate 15 contacts the molded part. One side of the clamping plate 15 is connected to the adjustment plate 11 through a rotating shaft, and can be fine-tuned according to the upper contour of the molded part, so that the clamping plate 15 can fit the molded part better. After clamping is completed, as the movable seat 2 continues to rise, it drives the molded part to separate from the lower mold 4, so that the staff can perform material collection operations.

[0030] See also Figure 2 A top plate 6 is arranged above the movable seat 2, and a servo motor 8 is fixedly installed at the four corners of the upper end surface of the top plate 6. Threaded rods 7 are installed at the four corners between the base 1 and the top plate 6. The threaded rod 7 is rotatably connected to the base 1 and the top plate 6, and the output shaft of the servo motor 8 is connected to the upper end of the threaded rod 7 through a coupling. A sliding block 5 is installed on the outside of the threaded rod 7. The inner screw hole of the sliding block 5 is adapted to the threaded rod 7, and one side of the sliding block 5 is fixed to the movable seat 2 by bolts, so that the height adjustment of the upper mold 3 can be realized.

[0031] See also Figure 1 An evaporator 14 is installed below the coolant tank 12, the lower end of the evaporator 14 is fixed to the base 1, and a heat-conducting metal plate is provided between the upper end of the evaporator 14 and the coolant tank 12, and also includes a refrigeration system;

[0032] After the gearbox between the upper mold 3 and the lower mold 4 is formed, the refrigeration system is turned on, and the refrigerant is compressed in the compressor to increase its pressure and temperature. The refrigerant absorbs heat from the surrounding environment, and then the high-temperature and high-pressure refrigerant enters the condenser. In the condenser, the refrigerant exchanges heat with the external environment through the heat sink or pipe, gradually cools itself and turns into liquid. The liquid refrigerant passes through the expansion valve and enters the evaporator 14. Under the action of the expansion valve, the pressure and temperature of the refrigerant are sharply reduced, so that it evaporates quickly, absorbs heat from the substances around the evaporator 14, and reduces its temperature. The cold amount is introduced into the interior of the coolant tank 12 to reduce the temperature of the coolant. By turning on the circulating pumps on both sides, the low-temperature coolant is transported to the interior of the upper mold and the lower mold, and moves in the annularly distributed cooling pipe 10, generating heat exchange with the molds, and transferring the low temperature to the molded gearbox housing, forming rapid cooling, thereby achieving the purpose of rapid molding.

[0033] See also Figure 2 and Figure 3 , positioning grooves 18 are provided at the front and back of the upper mold 3, and fixing columns 17 are installed at the front and back of the upper end of the lower mold 4, and the fixing columns 17 are plugged and fixed with the lower mold 4, and an installation cavity is installed at the upper end of the fixing column 17, and a sliding movable block 19 is provided inside the installation cavity, and a pressure sensor 20 is fixedly installed at the bottom of the installation cavity, and a spring 21 is installed between the pressure sensor 20 and the movable block 19. This mechanism can effectively avoid the misalignment of the mold due to aging of the equipment, and can be calibrated in time to avoid the expansion of economic losses.

[0034] See also Figure 1 An injection device 9 is provided at the middle position of the upper end surface of the movable seat 2, and the injection device 9 is fixed to the movable seat 2 by bolts.

[0035] See also Figure 5 A torsion spring 22 is installed on the rotating shaft at the connection between the clamping plate 15 and the adjusting plate 11 to provide support for the clamping plate 15 and facilitate its reset.

[0036] Furthermore, the cavity formed when the upper mold 3 and the lower mold 4 are closed is the molding cavity of the gear box.

[0037] Working principle: When in use, the output shaft of the servo motor 8 drives the threaded rod 7 to rotate, and the rotational motion is converted into linear motion under the friction with the sliding block 5, thereby driving the upper mold 3 to move downward through the movable seat 2. Under normal circumstances, the upper mold 3 and the lower mold 4 remain aligned, and the fixed column 17 can enter the interior of the positioning groove 18 without hindrance. If the upper mold 3 and the lower mold 4 are not aligned due to aging of parts, as the upper mold 3 descends, the edge of the positioning groove 18 will contact the movable block 19 first, allowing the movable block to extend toward the interior of the fixed column 17 until it contacts the pressure sensor 20. At this time, an electrical signal is generated to the processor, and the processor stops the operation of the servo motor 8 and issues an alarm to notify the staff to handle it.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An injection mold for a floor brush gear box of a sweeping machine, comprising a base (1), a lower mold (4) is installed at the middle position of the upper end surface of the base (1), and the lower mold (4) and the base (1) are fixed by bolts, a movable seat (2) is arranged above the lower mold (4), an upper mold (3) is installed at the bottom of the movable seat (2), and the upper mold (3) is adapted to the lower mold (4); Features: Also includes: An adjusting plate (11) is arranged at the middle position of both sides of the upper mold (3), and one end of the adjusting plate (11) is connected to the upper mold (3) through a rotating shaft, a driving motor (16) is installed on one side of the rotating shaft at one end of the adjusting plate (11), the housing of the driving motor (16) is fixed to the upper mold (3), and the output shaft of the driving motor (16) is connected to the rotating shaft at one end of the adjusting plate (11), and a clamping plate (15) is installed on the side of the other end of the adjusting plate (11), and the clamping plate (15) is connected to the adjusting plate (11) through a rotating shaft; A cooling pipe (10) is arranged inside the upper mold (3) and the lower mold (4), and the cooling pipe (10) is distributed in a rectangular spiral shape. A water inlet pipe and a water outlet pipe are respectively arranged at both ends of the cooling pipe (10). A coolant tank (12) is arranged inside the base (1), and the water outlet pipes extend to the inside of the coolant tank (12). Circulation pumps (13) are installed on both sides of the coolant tank (12), one end of the circulation pump (13) is connected to the inside of the coolant tank (12), and the other side of the circulation pump (13) is connected to the water inlet pipe of the cooling pipe (10).

2. The injection mold of the sweeping machine brush gear box according to claim 1, characterized in that: A top plate (6) is arranged above the movable seat (2), and a servo motor (8) is fixedly installed at the four corners of the upper end surface of the top plate (6). Threaded rods (7) are installed at the four corners between the base (1) and the top plate (6), and the threaded rod (7) is rotatably connected to the base (1) and the top plate (6), and the output shaft of the servo motor (8) is connected to the upper end of the threaded rod (7) through a coupling. A sliding block (5) is installed outside the threaded rod (7), and the inner screw hole of the sliding block (5) is adapted to the threaded rod (7), and one side of the sliding block (5) is fixed to the movable seat (2) by bolts.

3. The injection mold of the sweeping machine brush gear box according to claim 1, characterized in that: An evaporator (14) is installed below the coolant tank (12); the lower end of the evaporator (14) is fixed to the base (1), and a heat-conducting metal plate is provided between the upper end of the evaporator (14) and the coolant tank (12).

4. The injection mold of the sweeping machine brush gear box according to claim 1, characterized in that: Positioning grooves (18) are provided at the front and rear of the interior of the upper mold (3); fixing columns (17) are installed at the front and rear of the upper end of the lower mold (4), and the fixing columns (17) are plugged and fixed to the lower mold (4); a mounting cavity is installed at the upper end of the fixing column (17), and a slidingly connected movable block (19) is provided inside the mounting cavity; a pressure sensor (20) is fixedly installed at the bottom of the mounting cavity, and a spring (21) is installed between the pressure sensor (20) and the movable block (19).

5. The injection mold of the sweeping machine floor brush gear box according to claim 1, characterized in that: An injection device (9) is provided at the middle position of the upper end surface of the movable seat (2), and the injection device (9) and the movable seat (2) are fixed by bolts.

6. The injection mold of the sweeping machine floor brush gear box according to claim 2, characterized in that: A torsion spring (22) is installed on the rotating shaft at the connection between the clamping plate (15) and the adjusting plate (11).

7. The injection mold of the sweeping machine floor brush gear box according to claim 1, characterized in that: The cavity formed when the upper mold (3) and the lower mold (4) are closed is the molding cavity of the gear box.

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