Die head for coating machine

Abstract

The utility model discloses a die head for a coating machine, which comprises a lower die head body and rear support arms fixed on two sides of the back surface of the lower die head body, a rotating shaft is rotatably mounted between the two rear support arms, an upper die head body is arranged at the top end of the lower die head body, a liquid outlet gap is arranged between the lower die head body and the upper die head body, and the liquid outlet gap is communicated with the rotating shaft. The two sides of the top end of the upper die head body are each provided with a backswing supporting piece used for being connected with a rotating shaft. According to the utility model, the bolt tensioning structure is used for applying upward force to the lower die head body, so that the lower die head body and the upper die head body are firmly pressed together, the lower die head body and the upper die head body are ensured to be tightly combined in a closed state, and non-uniform coating or quality fluctuation caused by the change of a gap of the die head is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coating machine die head, concretely to a die head for coating machine. BACKGROUND

[0002] The die head of the coating machine is one of the key components of the equipment, mainly plays a role through nozzle design, runner system, adjusting device and material compatibility, etc., its core functions include ensuring uniform distribution of coating on the substrate surface, controlling coating thickness, adapting to different coating materials, and adjusting flow and speed, nozzle design affects the spraying mode and uniformity of the coating, and the runner system guides the flow of the coating material, the adjusting device allows accurate control of the parameters of the nozzle and the runner to meet specific production needs, such as the die head adjusting mechanism for the coating machine disclosed in the authorized announcement No. CN217369035U, comprising an upper die head and a lower die head, the surfaces of the upper die head and the lower die head are each provided with a plurality of bolt holes, the connecting part of the upper die head and the lower die head is provided with a discharge port, the sidewall of the lower die head is bolted to install a first driving part, the sidewall of the first driving part is bolted to install a reinforcing disc, the top recess of the first driving part is provided with a turnover plate, and the turnover plate is bolted to the upper die head, which is provided with a small storage tank, which can continuously provide the second tank liquid when the first tank is turned over, but the die head in the technical solution is composed of the upper and lower die heads that can be hinged together, and the coating seeps out from the narrow gap between the upper and lower die heads, after long-term use of the die head, the upper and lower die heads in the hinged state are prone to wear and deformation, which causes the size of the seepage gap to change, and the increase or decrease of the gap directly leads to the instability of the speed and amount of coating flow, thereby causing uneven coating thickness, and even causing the situation of missing coating or overcoating, which reduces the coating quality. SUMMARY

[0003] The utility model discloses a kind of die heads for coating machine, when upper and lower die heads are hinged closed, the upper and lower die heads are installed stably by bolt tensioning structure, to solve the problem raised in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme: a die head for coating machine, including lower die head body and the rear support arm fixed on the back of lower die head body, a rotating shaft is rotatably installed between the two rear support arms, a top end of the lower die head body is provided with an upper die head body, a liquid outlet gap is arranged between the lower die head body and the upper die head body, and a back-and-forth supporting piece for connecting with the rotating shaft is installed on both sides of the top end of the upper die head body, a plurality of steady flow liquid inlet nozzles are installed on the top end of the upper die head body, and a bolt tensioning structure for lifting the lower die head body upward is installed on the outer wall of both sides of the back-and-forth supporting piece.

[0005] Preferably, the swing supporting member comprises right-angle connecting arms fixed at both ends of the rotating shaft surface, and a cross beam installed between the two right-angle connecting arms, and the bottom end of the right-angle connecting arm is fixedly connected with the top end of the upper die head body.

[0006] Preferably, the top end of the steady flow liquid inlet nozzle penetrates to the outside of the cross beam, and the bolt tensioning structure is installed on the outer wall of the right-angle connecting arm away from the vertical central reference surface of the lower die head body.

[0007] Preferably, the bolt tensioning structure comprises a double-layer clamping plate fixed on the outer wall of the right-angle connecting arm, an inner threaded sleeve fixed in the double-layer clamping plate, a threaded shaft installed in the inner threaded sleeve, a pressing plate rotatably installed at the bottom end of the threaded shaft, and an annular convex disc fixed at the top end of the threaded shaft.

[0008] Preferably, one side of the top end of the pressing plate is provided with a columnar convex, and the bottom end of the lower die head body is provided with a circular groove concentric with the columnar convex.

[0009] Preferably, the steady flow liquid inlet nozzle is composed of an upper connecting nozzle and a lower liquid outlet cylinder, the lower liquid outlet cylinder is installed at the top end of the upper die head body, the upper connecting nozzle is fixed at the top end of the lower liquid outlet cylinder, one end inside the lower liquid outlet cylinder is installed with a cross seat, a center position inside the cross seat is installed with a middle valve rod, and the bottom end of the middle valve rod is fixed with a conical flow guide rod.

[0010] Compared with the prior art, the die head for a coating machine has the beneficial effects that: the bolt tensioning structure exerts an upward force on the lower die head body, so that the lower die head body and the upper die head body are tightly pressed together, the lower die head body and the upper die head body are kept in close combination in the closed state, coating unevenness or quality fluctuation caused by die gap variation does not occur, constant coating thickness is maintained, and quality problems caused by unstable coating flow are prevented. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a three-dimensional structure diagram of the utility model Figure 1 ;

[0012] Figure 2 is a three-dimensional structure diagram of the utility model

[0013] Figure 3 is a three-dimensional structure diagram of the utility model Figure 2 ;

[0014] Figure 4 is a three-dimensional structure diagram of the utility model

[0015] In the figure: 1. Lower die body; 2. Rear support arm; 3. Rotating shaft; 4. Right-angle connecting arm; 5. Upper die body; 6. Liquid outlet gap; 7. Crossbeam; 8. Steady flow liquid inlet nozzle; 801. Upper connecting nozzle; 802. Lower liquid outlet cylinder; 803. Cross seat; 804. Center valve stem; 805. Conical guide rod; 9. Bolt tensioning structure; 901. Double-layer splint; 902. Internal threaded sleeve; 903. Threaded shaft; 904. Annular flange; 905. Press plate. DETAILED DESCRIPTION

[0016] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] See also Figures 1-4 The utility model provides an embodiment: a die head for a coating machine, comprising a lower die head body 1 and rear support arms 2 fixed on both sides of the back of the lower die head body 1, a rotating shaft 3 is rotatably installed between the two rear support arms 2, an upper die head body 5 is provided at the top of the lower die head body 1, a liquid outlet gap 6 is provided between the lower die head body 1 and the upper die head body 5, and swing support members for connecting to the rotating shaft 3 are installed on both sides of the top of the upper die head body 5, a plurality of steady flow liquid inlet nozzles 8 are installed on the top of the upper die head body 5, and bolt tightening structures 9 for tightening the lower die head body 1 upward are installed on the outer walls of both sides of the swing support member;

[0018] The swing-back support comprises right-angle connecting arms 4 fixed to both ends of the surface of the rotating shaft 3, and a crossbeam 7 installed between the two right-angle connecting arms 4. The bottom end of the right-angle connecting arm 4 is fixedly connected to the top end of the upper die body 5. When closing the lower die body 1 and the upper die body 5, the staff manually flips the right-angle connecting arm 4, so that the right-angle connecting arm 4 drives the rotating shaft 3 to rotate with the rear support arm 2 as the center of the circle, thereby improving the movement stability of the rotating shaft 3 and the right-angle connecting arm 4 through the rear support arm 2;

[0019] The bolt tensioning structure 9 is installed on the outer wall of the right-angle connecting arm 4 away from the vertical center reference plane of the lower die head body 1. The bolt tensioning structure 9 includes a double-layer plywood 901 fixed to the outer wall of one side of the right-angle connecting arm 4, and an internally threaded sleeve 902 fixed inside the double-layer plywood 901. A threaded shaft 903 is installed inside the internally threaded sleeve 902. A pressure plate 905 is rotatably installed at the bottom end of the threaded shaft 903. An annular flange 904 is fixed to the top end of the threaded shaft 903.

[0020] After the lower die body 1 and the upper die body 5 are closed, the staff continuously rotates the threaded shaft 903, so that the threaded shaft 903 and the internal threaded sleeve 902 rotate relative to each other, that is, the threaded shaft 903 and the pressing plate 905 are lifted and lowered in the vertical direction of the internal threaded sleeve 902 until the upper surface of the pressing plate 905 firmly abuts against the lower surface of the lower die body 1, thereby closing and clamping the lower die body 1 and the upper die body 5, which stabilizes the installation of the die, reduces wear and deformation caused by long-term use, and can extend the service life of the die;

[0021] A cylindrical protrusion is provided on one side of the top of the pressing plate 905, and a circular groove concentric with the cylindrical protrusion is provided at the bottom end of the lower die body 1. The circular groove and the cylindrical protrusion improve the connection stability between the pressing plate 905 and the lower die body 1;

[0022] The top of the steady flow liquid inlet nozzle 8 passes through the outside of the cross beam 7. The steady flow liquid inlet nozzle 8 consists of an upper connecting nozzle 801 and a lower liquid outlet cylinder 802. The lower liquid outlet cylinder 802 is installed at the top of the upper die head body 5. The upper connecting nozzle 801 is fixed to the top of the lower liquid outlet cylinder 802. A cross seat 803 is installed at one end of the lower liquid outlet cylinder 802. A central valve stem 804 is installed at the center position inside the cross seat 803. A conical guide rod 805 is fixed to the bottom end of the central valve stem 804. The external coating liquid passes through the upper connecting nozzle 801 and enters the lower liquid outlet cylinder 802 along the central valve stem 804. The cross seat 803 diverts the coating liquid, and the conical guide rod 805 effectively guides and regulates the liquid in the steady flow liquid inlet nozzle 8, ensuring that the flow of the coating is stable and uniform until the coating liquid stably enters the sealed cavity of the lower die head body 1 and the upper die head body 5.

[0023] When the embodiment of the present application is in use, the staff first connects the steady flow liquid inlet nozzle 8 to the supply end hose of the external coating liquid, so that the coating liquid enters the sealed cavity formed by the lower die body 1 and the upper die body 5 through the hose and the steady flow liquid inlet nozzle 8. Then, as the pressure inside the supply end hose and the sealed cavity increases, the coating liquid is squeezed out through the liquid outlet 6 of the lower die body 1 and the upper die body 5, thereby evenly coating the coating material on the surface of the substrate. During this process, the staff can apply upward force to the lower die body 1 through the bolt tightening structure 9, so that the lower die body 1 and the upper die body 5 are firmly pressed together, ensuring that the lower die body 1 and the upper die body 5 remain tightly combined in the closed state, and there will be no uneven coating or quality fluctuations due to changes in the die gap, which helps to maintain a constant coating thickness and prevent quality problems caused by unstable coating flow.

[0024] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A die for a coater, characterized by: The utility model provides a lower die head body (1) and the back support arm (2) fixed on the back of lower die head body (1) two sides, the rotation is installed with the pivot (3) between two back support arms (2), the top of lower die head body (1) is provided with upper die head body (5), the lower die head body (1), upper die head body (5) between be provided with liquid outlet gap (6), and the both sides of the top of upper die head body (5) are installed for and the swing support piece of pivot (3) is connected, the top of upper die head body (5) is installed with a plurality of steady flow liquid inlet nozzle (8), the both sides outer wall of swing support piece are installed with bolt tensioning structure (9) for to the top of lower die head body (1) is lifted tightly.

2. The die for a coater according to claim 1, characterized by: The swing support piece includes a right-angle connecting arm (4) fixed on both ends of the surface of the pivot (3), and a cross beam (7) installed between the two right-angle connecting arms (4), the bottom end of the right-angle connecting arm (4) is fixedly connected with the top end of the upper die head body (5).

3. The die for a coater according to claim 2, characterized by: The top end of the steady flow liquid inlet nozzle (8) penetrates to the outside of the cross beam (7), and the bolt tensioning structure (9) is installed on the outer wall of the right-angle connecting arm (4) away from the vertical center reference plane of the lower die head body (1).

4. The die for a coater according to claim 3, characterized by: The bolt tensioning structure (9) includes a double-layer clamping plate (901) fixed on the outer wall of the right-angle connecting arm (4), an inner threaded sleeve (902) fixed inside the double-layer clamping plate (901), a threaded shaft (903) installed inside the inner threaded sleeve (902), a pressing plate (905) rotatably installed at the bottom end of the threaded shaft (903), and a ring-shaped convex disc (904) fixed at the top end of the threaded shaft (903).

5. A die head for a coating machine according to claim 4, characterized in that: One side of the top end of the pressing plate (905) is provided with a columnar protrusion, and the bottom end of the lower die head body (1) is provided with a circular groove concentric with the columnar protrusion.

6. The die for a coater according to claim 1, characterized by: The steady flow liquid inlet nozzle (8) is composed of an upper connecting nozzle (801) and a lower liquid outlet cylinder (802), the lower liquid outlet cylinder (802) is installed at the top end of the upper die head body (5), the upper connecting nozzle (801) is fixed at the top end of the lower liquid outlet cylinder (802), one end inside the lower liquid outlet cylinder (802) is installed with a cross seat (803), a center valve rod (804) is installed at the center position inside the cross seat (803), and the bottom end of the center valve rod (804) is fixed with a conical flow guide rod (805).

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