Paper cup hot pressing device easy to demould

Abstract

The utility model relates to the field of paper cup hot-press forming, and discloses an easy-to-demould paper cup hot-press device which comprises a lower hot-press mould base, a plurality of forming cavities are formed in the top surface of the lower hot-press mould base, a paper cup forming mechanism is arranged on the top surface of the lower hot-press mould base, and a demoulding mechanism is arranged in each forming cavity. The demolding mechanism comprises a circular plate, a connecting column, a fixing plate, an electric push rod, a rectangular shell, a mounting plate, an air hole, an air supply channel, a connecting guide pipe and an air supply shell, the circular plate is arranged on the inner bottom surface of the forming cavity, the connecting column is fixedly mounted on the bottom surface of the circular plate, and the end, away from the circular plate, of the connecting column extends to the bottom surface of the lower hot pressing mold base. By means of the paper cup stamping forming device, stamping forming operation can be effectively conducted on a paper cup, due to the fact that gas is exhausted from the edge side of the circular plate, compressed gas can flow through the inner wall of the forming cavity, and then the demolding efficiency of the formed paper cup is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of paper cup hot pressing forming, in particular to an easy demolding paper cup hot pressing device. BACKGROUND

[0002] The paper cup hot pressing device is a key link in paper cup production, mainly through high temperature and high pressure to make the paper cup material form and reinforce in the mold, which is mainly composed of heated upper and lower molds. The paper is first sent into the lower mold by the automatic paper feeding system. The lower mold is usually static, providing the bottom shape of the paper cup. Then, the upper mold is lowered in a heated state, pressing the paper into the shape of the cup body through high temperature and high pressure. In this process, the upper mold not only provides pressure, but also provides additional heat to ensure that the paper remains soft and plastic during forming. Precise temperature control and pressure control are required throughout the process to ensure the structural strength and shape stability of the paper cup.

[0003] A paper cup production mold is disclosed in the utility model patent with publication number CN217944477U, which includes a support column, the support column is fixedly connected with a workbench on one side, the workbench is fixedly connected with a mold table on one side, the mold table is provided with a taking-out component on one side, and the taking-out component includes an installation plate. The utility model has the advantages that after the paper cup is formed, the pulse air blower is started to spray high-pressure airflow, the airflow is guided by the flow guide pipe and finally sprayed from the air jet pipe, the formed paper cup can be flushed out in time, the paper cup can be taken out more conveniently, and the efficiency of paper cup production can be greatly improved.

[0004] However, it is found in actual use that: the device is provided with a taking-out hole connected with an air jet pipe outside the forming groove, and the air jet pipe sprays gas to facilitate paper cup demolding;

[0005] However, the device has a hollow shape at the bottom of the taking-out hole in the forming groove, which causes quality problems when the paper cup contacts the bottom during forming. When the side of the paper cup is adhered to the forming groove, blowing air upward from the taking-out hole will cause the paper cup to move upward and deform, affecting the quality. Therefore, an easy demolding paper cup hot pressing device is provided. Utility model content

[0006] The purpose of the present application is to solve the problems mentioned above and provide an easy demolding paper cup hot pressing device.

[0007] The technical solution adopted by the present application is as follows: an easy demolding paper cup hot pressing device, including a lower hot pressing mold base, a plurality of forming cavities are formed on the top surface of the lower hot pressing mold base, a paper cup forming mechanism is arranged on the top surface of the lower hot pressing mold base, and a demolding mechanism is arranged in the forming cavity.

[0008] The demolding mechanism comprises a circular plate, a connecting column, a fixed plate, an electric push rod, a rectangular shell, a mounting plate, an air hole, a gas supply channel, a connecting conduit and a gas supply shell, the inner bottom surface of the forming cavity is provided with the circular plate, the bottom surface of the circular plate is fixedly installed with the connecting column, the end of the connecting column away from the circular plate extends to the bottom surface of the lower hot-pressing die base, the bottom surface of the lower hot-pressing die base is fixedly installed with the fixed plate, the top surface of the fixed plate is fixedly installed with a plurality of electric push rods, the telescopic end of the electric push rod is fixedly installed with the rectangular shell, the top surface of the rectangular shell is fixedly installed with the mounting plate, the bottom end of the connecting column is fixed with the top surface of the mounting plate, the outer surface of the circular plate is provided with the air hole, the bottom end of the forming cavity is provided with the gas supply channel in communication with the air hole, the gas supply channel is fixedly installed with the connecting conduit close to the inner wall surface of the bottom end, the right side of the lower hot-pressing die base is fixedly installed with the gas supply shell, one end of the connecting conduit extends to the inside of the gas supply shell, one side of the gas supply shell is fixedly installed with the gas supply pipeline connected with the external air pump, the high-pressure gas generated by the external air pump or gas source enters the inside of the gas supply shell through the gas supply pipeline, and then enters the inside of the air hole through the connecting conduit and the gas supply channel, so that the compressed gas is sprayed out through the air hole, so that the gas can flow to the side of the formed paper cup in the forming cavity, thereby avoiding the adhesion of the outer surface of the formed paper cup to the inner wall of the forming cavity as much as possible.

[0009] Preferably, the paper cup forming mechanism comprises a top support, an electric hydraulic cylinder and an upper hot-pressing die base, the top surface of the lower hot-pressing die base is provided with the top support, the top surface of the top support is fixedly installed with the electric hydraulic cylinder, the telescopic end of the electric hydraulic cylinder penetrates through the top surface of the top support, the bottom surface of the top support is provided with the upper hot-pressing die base, and the telescopic end of the electric hydraulic cylinder is fixed with the top surface of the upper hot-pressing die base. By arranging the electric hydraulic cylinder, the upper hot-pressing die base can be driven to move downward, so that the upper hot-pressing die base cooperates with the lower hot-pressing die base to realize the stamping forming operation of the paper cup.

[0010] Preferably, a plurality of guide columns are fixedly installed on the top surface of the lower hot-pressing die base near the corners, and the top ends of the guide columns penetrate through the upper hot-pressing die base and are fixed with the bottom surface of the top support. By arranging the plurality of guide columns, the stability of the upper hot-pressing die base when descending is improved, and the forming precision is improved.

[0011] Preferably, a plurality of bottom supports are fixedly installed on the side of the lower hot-pressing die base symmetrically, and the top surfaces of the bottom supports are fixedly installed with reinforcing struts, and the top ends of the reinforcing struts are fixed with the bottom surface of the top support. By arranging the bottom supports and the reinforcing struts, the stability of the top support is further improved.

[0012] Preferably, the guide column is provided with a return spring close to the bottom end outer surface, and the bottom end of the return spring is fixed to the top surface of the lower hot pressing die seat. The return spring can provide certain buffering, so that the upper hot pressing die seat and the lower hot pressing die seat do not collide hard when cooperating, and the protection of the die seat is improved.

[0013] Preferably, a plurality of air holes are arranged on the outer surface of the circular plate at equal intervals in a circumferential array. The plurality of air holes can improve the gas exhaust efficiency, thereby improving the paper cup demolding effect.

[0014] In summary, due to the adoption of the above technical scheme, the beneficial effects of the present application are:

[0015] 1. In the present application, the electric push rod drives the rectangular shell, the mounting plate, the connecting column and the circular plate to move upward, so that the circular plate is slightly pushed upward to slightly lift the paper cup formed in the forming cavity. At the same time, the high-pressure gas generated by the external air pump or gas source enters the gas supply shell through the gas supply pipeline, and enters the air hole through the connecting pipe and the gas supply channel, so that the compressed gas is sprayed out of the air hole. In this way, the gas can flow to the side of the formed paper cup in the forming cavity, so as to avoid the adhesion of the outer surface of the formed paper cup to the inner wall of the forming cavity as much as possible. The device can effectively perform the stamping forming operation on the paper cup. Since the gas is discharged from the side of the circular plate, the compressed gas can flow through the inner wall of the forming cavity, thereby improving the demolding efficiency of the formed paper cup. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0017] Figure 2 It is a schematic diagram of the internal structure of the forming cavity of the present application;

[0018] Figure 3 It is a schematic diagram of the connecting column structure of the present application;

[0019] Figure 4 It is a schematic diagram of the internal structure of the lower hot pressing die seat of the present application;

[0020] Figure 5 It is a schematic diagram of the uninstalled structure of the circular plate of the present application.

[0021] Marked in the figure: 1, the lower hot-pressing die seat; 2, the forming cavity; 3, the paper cup forming mechanism; 301, the top support; 302, the electric hydraulic cylinder; 303, the upper hot-pressing die seat; 4, the demolding mechanism; 401, the circular plate; 402, the connecting column; 403, the fixed plate; 404, the electric push rod; 405, the rectangular shell; 406, the mounting plate; 407, the air hole; 408, the air supply channel; 409, the connecting conduit; 410, the air supply shell; 5, the guide column; 6, the bottom support; 7, the reinforcing support rod; 8, the return spring. DETAILED DESCRIPTION

[0022] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0023] Reference Figures 1-5 A paper cup hot-pressing device with easy demolding, comprising a lower hot-pressing die seat 1, the top surface of the lower hot-pressing die seat 1 is provided with a plurality of forming cavities 2, and the top surface of the lower hot-pressing die seat 1 is provided with a paper cup forming mechanism 3; through the paper cup forming mechanism 3, the paper cup can be conveniently subjected to punch forming operation in the forming cavity 2.

[0024] Reference Figure 1 , Figure 2 and Figure 3 The paper cup forming mechanism 3 comprises a top support 301, an electric hydraulic cylinder 302, and an upper hot-pressing die seat 303, the top surface of the lower hot-pressing die seat 1 is provided with the top support 301, the top surface of the top support 301 is fixedly installed with the electric hydraulic cylinder 302, the telescopic end of the electric hydraulic cylinder 302 penetrates through the top surface of the top support 301, the bottom surface of the top support 301 is provided with the upper hot-pressing die seat 303, and the telescopic end of the electric hydraulic cylinder 302 is fixed to the top surface of the upper hot-pressing die seat 303; the lower hot-pressing die seat 1 and the upper hot-pressing die seat 303 are both provided with heating elements, such as electric heating wires and heating plates, etc., through the electric hydraulic cylinder 302, the upper hot-pressing die seat 303 can be conveniently driven to move downward, so that the upper hot-pressing die seat 303 cooperates with the lower hot-pressing die seat 1 to realize the punch forming operation of the paper cup.

[0025] Reference Figure 1 , Figure 2 and Figure 3The top surface of the lower hot-pressing die holder 1 is fixedly installed with multiple guide columns 5 near the corners, and the top ends of the multiple guide columns 5 all penetrate the upper hot-pressing die holder 303 and are fixed to the bottom surface of the top support 301. The guide columns 5 are provided with return springs 8 near the outer surfaces of the bottom ends, and the bottom ends of the return springs 8 are fixed to the top surface of the lower hot-pressing die holder 1. The multiple guide columns 5 are arranged to improve the stability of the upper hot-pressing die holder 303 when it is lowered, improve the forming precision, and the return springs 8 can provide a certain buffering effect, so that the upper hot-pressing die holder 303 does not collide with the lower hot-pressing die holder 1 when they are matched, and the protection of the die holder is improved.

[0026] Referring to Figure 1 , Figure 2 and Figure 3 , multiple bottom supports 6 are symmetrically and fixedly installed on the side of the lower hot-pressing die holder 1, and the top surface of each bottom support 6 is fixedly installed with a reinforcing support 7, and the top end of the reinforcing support 7 is fixed to the bottom surface of the top support 301. The bottom supports 6 and the reinforcing supports 7 are arranged to further improve the stability of the top support 301.

[0027] Referring to Figure 3 , Figure 4 and Figure 5 , the inside of the forming cavity 2 is provided with a demolding mechanism 4, which includes a circular plate 401, a connecting column 402, a fixed plate 403, an electric push rod 404, a rectangular shell 405, a mounting plate 406, a gas hole 407, a gas supply channel 408, a connecting conduit 409 and a gas supply shell 410. The inside bottom surface of the forming cavity 2 is provided with the circular plate 401, the bottom surface of the circular plate 401 is fixedly installed with the connecting column 402, and the end of the connecting column 402 away from the circular plate 401 extends to the bottom surface of the lower hot-pressing die holder 1. The circular plate 401 and the inside bottom surface of the forming cavity 2 form a plane, so that the bottom of the paper cup does not have quality problems when it is reshaped. At the same time, the circular plate 401 and the connecting column 402 can be integrally formed and manufactured, so that the subsequent gas can flow in the inside.

[0028] Referring to Figure 3 , Figure 4 and Figure 5The bottom surface of the lower hot-pressing die seat 1 is fixedly installed with a fixed plate 403, the top surface of the fixed plate 403 is fixedly installed with a plurality of electric push rods 404, the telescopic end of the electric push rod 404 is fixedly installed with a rectangular shell 405, the top surface of the rectangular shell 405 is fixedly installed with a mounting plate 406, the bottom end of the connecting column 402 is fixed with the top surface of the mounting plate 406, the outer surface of the circular plate 401 is provided with a gas hole 407, the outer surface of the circular plate 401 is provided with a plurality of gas holes 407 in a circumferential array at equal intervals, and the bottom end of the forming cavity 2 is provided with a gas supply channel 408 in communication with the gas hole 407; the electric push rod 404 is arranged, so as to drive the rectangular shell 405 and the mounting plate 406 to move upward, so that the mounting plate 406 drives the connecting column 402 and the circular plate 401 to move upward, so that the circular plate 401 slightly lifts the paper cup formed in the forming cavity 2, so as to facilitate the subsequent discharge of gas and better demolding operation of the formed paper cup.

[0029] Reference Figure 3 , Figure 4 and Figure 5 The gas supply channel 408 is fixedly installed with a connecting conduit 409 close to the inner wall surface of the bottom end, and the right side of the lower hot-pressing die seat 1 is fixedly installed with a gas supply shell 410. One end of the connecting conduit 409 extends to the inside of the gas supply shell 410, and one side of the gas supply shell 410 is fixedly installed with a gas supply pipeline connected with an external air pump; the gas supply pipeline is connected with an external air pump or a gas source, so that the compressed gas from the outside enters the inside of the gas supply shell 410 through the gas supply pipeline, so that the high-pressure gas in the inside of the gas supply shell 410 is sprayed out through the connecting conduit 409, the gas supply channel 408 and the gas hole 407, so that the gas flows to the inside of the forming cavity 2, and the adhesion of the outer surface of the formed paper cup to the inner wall of the forming cavity 2 is avoided as much as possible.

[0030] The implementation principle of the paper cup hot-pressing device with easy demolding of the embodiment is as follows: in the paper cup production process, the paper with a coating is conveyed to the lower hot-pressing die seat 1 under the driving of the conveying mechanism, then the operator starts the electric hydraulic cylinder 302 in the paper cup forming mechanism 3, the electric hydraulic cylinder 302 drives the upper hot-pressing die seat 303 to move downward, so that it is adapted with the lower hot-pressing die seat 1, and then the stamping forming operation of the paper cup is realized.

[0031] When the paper cup is punched and formed, the operator starts the electric push rod 404 again, the electric push rod 404 drives the rectangular shell 405, the mounting plate 406, the connecting column 402 and the circular plate 401 to move upward, so that the circular plate 401 is slightly pushed upward to slightly push the formed paper cup in the forming cavity 2 upward, at the same time, the high-pressure gas generated by the external air pump or gas source enters the gas supply shell 410 inside through the gas supply pipeline, and enters the gas hole 407 inside through the connecting pipe 409 and the gas supply channel 408, so that the compressed gas is sprayed out of the gas hole 407, so that the gas can flow to the side of the formed paper cup in the forming cavity 2, so as to avoid the adhesion of the outer surface of the formed paper cup to the inner wall of the forming cavity 2 as much as possible. The device can effectively punch and form the paper cup, and because the gas is discharged from the side of the circular plate 301, the compressed gas can flow through the inner wall of the forming cavity 2, thereby improving the demolding efficiency of the formed paper cup and avoiding the adhesion of the formed paper cup during demolding to produce quality problems.

[0032] The above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A paper cup hot-pressing apparatus with easy demolding, comprising a lower hot-pressing die base (1), characterized in that: The top surface of the lower hot-pressing die seat (1) is provided with a plurality of forming cavities (2), and the top surface of the lower hot-pressing die seat (1) is provided with a paper cup forming mechanism (3), and the inside of the forming cavity (2) is provided with a demolding mechanism (4); The demolding mechanism (4) comprises a circular plate (401), a connecting column (402), a fixed plate (403), an electric push rod (404), a rectangular shell (405), a mounting plate (406), an air hole (407), a gas supply channel (408), a connecting conduit (409) and a gas supply shell (410), the inside bottom surface of the forming cavity (2) is provided with the circular plate (401), the bottom surface of the circular plate (401) is fixedly installed with the connecting column (402), one end of the connecting column (402) away from the circular plate (401) extends to the bottom surface of the lower hot-pressing die seat (1), the bottom surface of the lower hot-pressing die seat (1) is fixedly installed with the fixed plate (403), the top surface of the fixed plate (403) is fixedly installed with a plurality of electric push rods (404), the telescopic end of the electric push rod (404) is fixedly installed with the rectangular shell (405), the top surface of the rectangular shell (405) is fixedly installed with the mounting plate (406), the bottom end of the connecting column (402) is fixed with the top surface of the mounting plate (406), the outer surface of the circular plate (401) is provided with the air hole (407), the bottom end of the forming cavity (2) is provided with the gas supply channel (408) which is in communication with the air hole (407), the connecting conduit (409) is fixedly installed on the gas supply channel (408) close to the bottom end inner wall surface, the right side of the lower hot-pressing die seat (1) is fixedly installed with the gas supply shell (410), one end of the connecting conduit (409) extends to the inside of the gas supply shell (410), one side of the gas supply shell (410) is fixedly installed with the gas supply pipeline connected with the external air pump.

2. A paper cup hot press apparatus according to claim 1, wherein: The paper cup forming mechanism (3) comprises a top support (301), an electric hydraulic cylinder (302) and an upper hot-pressing die seat (303), the top surface of the lower hot-pressing die seat (1) is provided with the top support (301), the top surface of the top support (301) is fixedly installed with the electric hydraulic cylinder (302), the telescopic end of the electric hydraulic cylinder (302) penetrates through the top surface of the top support (301), and the bottom surface of the top support (301) is provided with the upper hot-pressing die seat (303), and the telescopic end of the electric hydraulic cylinder (302) is fixed with the top surface of the upper hot-pressing die seat (303).

3. A paper cup hot press apparatus for easy demolding according to claim 2, wherein: A plurality of guide columns (5) are fixedly installed on the top surface of the lower hot-pressing die seat (1) near the corners, and the top ends of the guide columns (5) penetrate through the upper hot-pressing die seat (303) and are fixed with the bottom surface of the top support (301).

4. A paper cup hot press apparatus according to claim 1, wherein: A plurality of bottom supports (6) are fixedly installed on the side of the lower hot-pressing die seat (1) symmetrically, and the top surfaces of the bottom supports (6) are fixedly installed with reinforcing struts (7), and the top ends of the reinforcing struts (7) are fixed with the bottom surface of the top support (301).

5. A paper cup hot press apparatus according to claim 3, wherein: The guiding column (5) is provided with a return spring (8) near the outer surface of the bottom end, and the bottom end of the return spring (8) is fixed with the top surface of the lower hot-pressing die seat (1).

6. A paper cup hot press apparatus for easy demolding according to claim 1, wherein: The outer surface of the circular plate (401) is provided with a plurality of air holes (407) in a circumferential array at equal intervals.

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