Machine head for polyurethane foaming machine

Abstract

The utility model discloses a machine head for a polyurethane foaming machine, and relates to the technical field of machine heads of polyurethane foaming machines, the machine head comprises a mixing cavity and a metal pipe, a position adjusting assembly is arranged, a first knob is rotated to drive a first threaded rod to be separated from the mixing cavity, and the position of the metal pipe can be adjusted by moving the metal pipe left and right; according to the mixing device, the metal pipe moves left and right, so that the discharging position of a mixture is adjusted according to needs, a baffle is arranged and can cover the bottom of the mixing cavity all the time after the metal pipe moves left and right, and therefore the mixture is prevented from flowing outwards from a gap between the mixing cavity and the metal pipe; when the rectangular sleeve is moved downwards, the staying time of the mixture in the air after the mixture comes out of the rectangular sleeve can be shortened, the impact force of the mixture on the inner walls of the rectangular sleeve and the metal pipe is small, and therefore the service life of the rectangular sleeve and the metal pipe can be prolonged, and the flowing-out direction of the mixture is prevented from being changed.

Description

Technical Field

[0001] The utility model relates to the technical field of the head of a polyurethane foaming machine, in particular to a head for a polyurethane foaming machine. Background Art

[0002] A polyurethane foaming machine is a special device for pouring and foaming polyurethane foam plastics. Polyurethane foam plastics are made by chemically reacting polyether polyols and polyisocyanates in the presence of various chemical additives such as blowing agents, catalysts, and emulsifiers to form foam plastics. The polyurethane foaming machine can be used for the processing of automotive interiors, thermal insulation wall spraying, manufacturing of thermal insulation pipes, and sponges for bicycle and motorcycle seats. The head of the polyurethane foaming machine is a part used to export the foamed raw materials.

[0003] As disclosed in the utility model with the authorization announcement number CN218640165U, a head of a polyurethane foaming machine with a universally adjustable discharge port. It is connected with a universal metal hose at the discharge port. The hose can be arbitrarily rotated and bent into a shape. The universal metal hose can prevent the mixture from dispersing due to the height difference after coming out, and always maintain a liquid column state, reducing the residence time of the mixture in the air. The universal metal hose can adjust the discharge port of the pipe body to a specific position for injection. One end of the universal metal hose is connected by threads, which is convenient for disassembly and assembly.

[0004] The following problems still exist when this existing technology is used:

[0005] During the process of foaming and discharging the mixture by the universal metal hose of this device, the mixture flowing inside the bent universal metal hose is likely to impact the inner wall of the universal metal hose, resulting in the inner wall of the universal metal hose being easily eroded. The relatively fast flow rate of the mixture may drive the universal metal hose to deform, thus changing the direction of the mixture flowing out. Summary of the Utility Model

[0006] In order to overcome the deficiencies of the existing technology, the utility model provides a head for a polyurethane foaming machine to solve the technical problems mentioned in the above background.

[0007] To solve the above technical problems, the utility model provides the following technical solution: A head for a polyurethane foaming machine, including a mixing cavity and a metal pipe, the bottom surface of the mixing cavity is slidably connected with the metal pipe;

[0008] A position adjustment component is arranged outside the metal pipe, and the position adjustment component can conveniently adjust the left and right positions of the metal pipe;

[0009] Baffles are symmetrically fixed on the left and right sides of the metal pipe, and the baffles can prevent the mixture from flowing out of the gap between the mixing cavity and the metal pipe after the metal pipe moves left and right;

[0010] The elongation component is arranged outside the metal pipe, and the elongation component can reduce the residence time of the mixture in the air after coming out of the rectangular sleeve.

[0011] As a preferred technical solution of the present utility model, symmetric fixing plates are fixedly arranged on the left and right sides of the mixing cavity. Threaded holes penetrating through to the bottom surface are arranged on the top surfaces of the fixing plates, and limiting plates are fixedly arranged on the sides of the baffle plates away from each other.

[0012] As a preferred technical solution of the present utility model, the position adjustment component includes a T-shaped slide bar, a movable plate, a first knob, a first threaded rod and a connecting plate. The T-shaped slide bar is fixedly arranged on the top surface of the metal pipe, and the connecting plate is fixedly arranged on the front surface of the metal pipe. The movable plate is fixedly arranged on the front surface of the connecting plate, and the first knob is arranged in front of the movable plate. The first threaded rod is fixedly arranged on the back surface of the first knob.

[0013] As a preferred technical solution of the present utility model, T-shaped chutes adapted to the T-shaped slide bar are symmetrically arranged on the bottom surface of the mixing cavity. The T-shaped slide bar is slidably connected with the mixing cavity through the T-shaped chute. The back surface of the movable plate is slidably connected with the mixing cavity, and the first threaded rod penetrates through the movable plate and is threadedly connected with the movable plate.

[0014] As a preferred technical solution of the present utility model, the elongation component includes a rectangular sleeve, a second knob, a second threaded rod and an inclined groove. The rectangular sleeve is arranged outside the metal pipe. The second knob is arranged in front of the rectangular sleeve. The second threaded rod is fixedly arranged on the back surface of the second knob, and the inclined groove is arranged on the top surface of the rectangular sleeve.

[0015] As a preferred technical solution of the present utility model, an annular groove adapted to the metal pipe is arranged on the top surface of the rectangular sleeve. The metal pipe is slidably connected with the rectangular sleeve through the annular groove. The second threaded rod penetrates through the rectangular sleeve and is threadedly connected with the rectangular sleeve.

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

[0017] The utility model adjusts the discharging position of the mixture according to needs by setting a position adjustment component. Rotating the first knob drives the first threaded rod away from the mixing cavity, and the position of the metal pipe can be adjusted by moving the metal pipe left and right. Reversing the rotation of the first knob drives the first threaded rod to press against the mixing cavity to fix the position of the metal pipe again. By setting a baffle plate, the baffle plate moves with the movement of the metal pipe, and the baffle plate can always cover the bottom of the mixing cavity after the metal pipe moves left and right, thereby preventing the mixture from flowing out through the gap between the mixing cavity and the metal pipe. By setting an elongation component, rotating the second knob drives the second threaded rod away from the metal pipe, and moving the rectangular sleeve downward can increase the contact time between the mixture and the inner wall of the metal pipe, thereby reducing the residence time of the mixture in the air after flowing out of the rectangular sleeve, avoiding product quality problems caused by bringing in more air. The impact force of the mixture on the rectangular sleeve and the inner wall of the metal pipe is small, so the service life of the rectangular sleeve and the metal pipe can be extended, and the change of the flowing direction of the mixture can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 is a schematic cross-sectional structure view of the front view of the utility model;

[0020] Figure 3 is a schematic cross-sectional structure view of the left view of the utility model;

[0021] Figure 4 is a schematic top view structure view of the utility model;

[0022] Wherein: 1, mixing cavity; 2, fixing plate; 3, rectangular sleeve; 4, baffle plate; 5, limiting plate; 6, T-shaped slide bar; 7, movable plate; 8, first knob; 9, second knob; 10, metal pipe; 11, threaded hole; 12, first threaded rod; 13, second threaded rod; 14, connecting plate; 15, inclined groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical means, creative features, achieved purposes and functions of the utility model easy to understand, the following specific embodiments are used to further illustrate the utility model. However, the following embodiments are only the preferred embodiments of the utility model, not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the utility model.

[0024] Embodiment

[0025] Please refer to Figures 1-4As shown in the figure, the present utility model provides a head for a polyurethane foaming machine, which includes a mixing cavity 1 and a metal pipe 10. Both the mixing cavity 1 and the metal pipe 10 are hollow structures with openings at the top and bottom. The cross-sectional shapes of the inner wall and the outer wall of the metal pipe 10 are both rectangular. The mixing cavity 1 is communicated with the metal pipe 10. The bottom surface of the mixing cavity 1 is slidably connected to the metal pipe 10. Symmetric fixing plates 2 are fixedly arranged on the left and right sides of the mixing cavity 1. Threaded holes 11 penetrating through to the bottom surface are arranged on the top surfaces of the fixing plates 2. The fixing plates 2 in cooperation with the threaded holes 11 can facilitate the connection of the mixing cavity 1 with other external structures. Symmetric baffles 4 are fixedly arranged on the left and right sides of the metal pipe 10. Limiting plates 5 are fixedly arranged on the sides of the baffles 4 away from each other. After the raw material mixture enters the interior of the mixing cavity 1, it is stirred evenly by an external stirring device, and then enters the metal pipe 10 through the bottom of the mixing cavity 1 and flows outwards. The baffles 4 can cover the bottom of the mixing cavity 1, thereby preventing the mixture from flowing outwards through the gap between the mixing cavity 1 and the metal pipe 10.

[0026] As Figures 1-4 shown, a position adjustment assembly is arranged outside the metal pipe 10. The position adjustment assembly is composed of a T-shaped slide bar 6, a movable plate 7, a first knob 8, a first threaded rod 12, and a connecting plate 14. The T-shaped slide bar 6 is fixedly arranged on the top surface of the metal pipe 10. T-shaped chutes adapted to the T-shaped slide bar 6 are symmetrically arranged on the bottom surface of the mixing cavity 1. The T-shaped slide bar 6 is slidably connected to the mixing cavity 1 through the T-shaped chute. The top surface of the T-shaped slide bar 6 is a symmetric inclined surface. The inclined surface can reduce the impact force of the mixture on the T-shaped slide bar 6 when the mixture contacts the T-shaped slide bar 6, and prolong the service life of the T-shaped slide bar 6. The connecting plate 14 is fixedly arranged on the front surface of the metal pipe 10. The movable plate 7 is fixedly arranged on the front surface of the connecting plate 14. The back surface of the movable plate 7 is slidably connected to the mixing cavity 1. A first knob 8 is arranged in front of the movable plate 7. The first threaded rod 12 is fixedly arranged on the back surface of the first knob 8. The first threaded rod 12 penetrates through the movable plate 7 and is threadedly connected to the movable plate 7. Rotating the first knob 8 drives the first threaded rod 12 to disengage from the mixing cavity 1. Moving the metal pipe 10 left and right can adjust the position of the metal pipe 10, thereby adjusting the discharge position of the mixture as needed. The limiting plate 5 can prevent the T-shaped slide bar 6 from disengaging from the mixing cavity 1 when the metal pipe 10 moves left and right. Rotating the first knob 8 in the reverse direction drives the first threaded rod 12 to rotate and press against the mixing cavity 1 to fix the position of the metal pipe 10 again. The baffle 4 can always cover the bottom of the mixing cavity 1 after the metal pipe 10 moves left and right.

[0027] As Figures 1-4As shown in the figure, an elongation component is provided outside the metal pipe 10. The elongation component is composed of a rectangular sleeve 3, a second knob 9, a second threaded rod 13 and a slotted groove 15. A rectangular sleeve 3 is provided outside the metal pipe 10. An annular groove adapted to the metal pipe 10 is provided on the top surface of the rectangular sleeve 3. The metal pipe 10 is slidably connected to the rectangular sleeve 3 through the annular groove. A second knob 9 is provided in front of the rectangular sleeve 3. A second threaded rod 13 is fixedly provided on the back surface of the second knob 9. The second threaded rod 13 penetrates through the rectangular sleeve 3 and is threadedly connected to the rectangular sleeve 3. A slotted groove 15 is provided on the top surface of the rectangular sleeve 3. The slotted groove 15 can reduce the impact force of the mixture on the top of the rectangular sleeve 3. Rotating the second knob 9 drives the second threaded rod 13 away from the metal pipe 10. Moving the rectangular sleeve 3 downward can increase the contact time between the mixture and the inner wall of the metal pipe 10, thereby reducing the residence time of the mixture in the air after coming out of the rectangular sleeve 3, avoiding product quality problems caused by bringing in more air. The impact force of the mixture on the inner walls of the rectangular sleeve 3 and the metal pipe 10 is small, so the service life of the rectangular sleeve 3 and the metal pipe 10 can be extended, and the outflow direction of the mixture can be prevented from changing.

[0028] Specific working principle:

[0029] When the device is in use, rotating the first knob 8 drives the first threaded rod 12 away from the mixing cavity 1, and moving the metal pipe 10 left and right adjusts the position of the metal pipe 10, so as to adjust the discharging position of the mixture as needed. Reversely rotating the first knob 8 drives the first threaded rod 12 to rotate and press the mixing cavity 1 to fix the position of the metal pipe 10 again. The baffle 4 can always cover the bottom of the mixing cavity 1 after the metal pipe 10 moves left and right, thereby preventing the mixture from flowing outwards through the gap between the mixing cavity 1 and the metal pipe 10. Rotating the second knob 9 drives the second threaded rod 13 away from the metal pipe 10. Moving the rectangular sleeve 3 downward can increase the contact time between the mixture and the inner wall of the metal pipe 10, thereby reducing the residence time of the mixture in the air after coming out of the rectangular sleeve 3, avoiding product quality problems caused by bringing in more air. After the raw material mixture enters the interior of the mixing cavity 1, it is stirred evenly by an external stirring device, then enters the metal pipe 10 through the bottom of the mixing cavity 1 and flows outwards. The impact force of the mixture on the inner walls of the rectangular sleeve 3 and the metal pipe 10 is small, so the service life of the rectangular sleeve 3 and the metal pipe 10 can be extended, and the outflow direction of the mixture can be prevented from changing.

[0030] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A head for a polyurethane foaming machine, comprising a mixing cavity (1) and a metal tube (10), wherein the bottom surface of the mixing cavity (1) is slidably connected to the metal tube (10), characterized in that: A position adjustment component, the position adjustment component is arranged outside the metal tube (10), and the position adjustment component can conveniently adjust the left and right positions of the metal tube (10); baffles (4), wherein the baffles (4) are symmetrically fixed to the left and right sides of the metal tube (10), and the baffles (4) can prevent the mixed material from flowing out of the gap between the mixing chamber (1) and the metal tube (10) after the metal tube (10) moves left and right; An extension component is arranged outside the metal pipe (10), and the extension component can reduce the time the mixed material stays in the air after coming out of the rectangular sleeve (3).

2. A head for a polyurethane foaming machine according to claim 1, characterized in that: Symmetrical fixing plates (2) are fixedly provided on the left and right sides of the mixing chamber (1); the top surface of the fixing plate (2) is provided with a threaded hole (11) penetrating to the bottom surface; and the baffles (4) are fixedly provided with a limit plate (5) on the side away from each other.

3. The head for a polyurethane foaming machine according to claim 1, characterized in that: The position adjustment component comprises a T-shaped slide bar (6), a movable plate (7), a first knob (8), a first threaded rod (12) and a connecting plate (14); the T-shaped slide bar (6) is fixedly arranged on the top surface of the metal tube (10); the connecting plate (14) is fixedly arranged on the front surface of the metal tube (10); the movable plate (7) is fixedly arranged on the front surface of the connecting plate (14); the first knob (8) is arranged in front of the movable plate (7); and the first threaded rod (12) is fixedly arranged on the back surface of the first knob (8).

4. A head for a polyurethane foaming machine according to claim 3, characterized in that: The bottom surface of the mixing chamber (1) is symmetrically provided with a T-shaped slide groove adapted to the T-shaped slide bar (6); the T-shaped slide bar (6) is slidably connected to the mixing chamber (1) via the T-shaped slide groove; the back surface of the movable plate (7) is slidably connected to the mixing chamber (1); and the first threaded rod (12) passes through the movable plate (7) and is threadedly connected to the movable plate (7).

5. The head for a polyurethane foaming machine according to claim 1, characterized in that: The extension component comprises a rectangular sleeve (3), a second knob (9), a second threaded rod (13) and an inclined groove (15); the rectangular sleeve (3) is arranged on the outside of the metal tube (10); the second knob (9) is arranged in front of the rectangular sleeve (3); the second threaded rod (13) is fixedly arranged on the back of the second knob (9); and the inclined groove (15) is arranged on the top surface of the rectangular sleeve (3).

6. A head for a polyurethane foaming machine according to claim 5, characterized in that: The top surface of the rectangular sleeve (3) is provided with an annular groove adapted to the metal tube (10); the metal tube (10) is slidably connected to the rectangular sleeve (3) via the annular groove; the second threaded rod (13) passes through the rectangular sleeve (3) and is threadedly connected to the rectangular sleeve (3).

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