Forming mold with positioning mechanism and pulp molding machine thereof

Abstract

The present invention provides a molding die with a positioning mechanism and a pulp molding machine thereof, belonging to the technical field of pulp molding equipment. The molding die with a positioning mechanism includes an upper mold, a lower mold and a positioning mechanism, wherein the positioning mechanism includes a positioning pin fixed to the bottom of the upper mold and a positioning socket fixed to the top of the lower mold; from a top-down perspective, the positioning socket is provided with a U-shaped positioning opening suitable for the positioning pin to be inserted from top to bottom; the lower mold is provided with a mounting groove suitable for the positioning socket to be installed, and the lower mold is provided with a receiving groove located below the mounting groove and convenient for the positioning pin to be inserted; from a horizontal projection direction, the side wall surface of the receiving groove is spaced a certain distance from the side surface of the positioning pin. The present invention utilizes a positioning socket with a positioning opening to cooperate with the positioning pin, and a receiving groove is provided in the lower mold to play its positioning role when the upper mold and the lower mold are precisely joined, thereby solving the problems of large friction and fast wear of the existing positioning mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of pulp molding equipment, and in particular relates to a molding die with a positioning mechanism and a pulp molding machine thereof. Background Art

[0002] Pulp molding technology uses waste paper as raw material. A special mold is used on a molding machine to shape pulp molded products into a certain shape. The production process includes pulping, adsorption molding, drying and shaping.

[0003] When manufacturing pulp molded products, a pulp molding device is used. The molding device is equipped with a paper mold consisting of an upper mold and a lower mold, and is provided with a guide mechanism consisting of a positioning socket fixed to the lower mold and a positioning pin fixed to the upper mold, such as the paper mold with a guide function disclosed in the invention patent with the authorization announcement number CN207031930U. Through the guide function of the guide mechanism, the upper mold and the lower mold are guided to close the mold in the correct position, effectively providing the closing accuracy, avoiding the problems of large and small edges, thickness deviations, etc. of the pulp molded products caused by the coaxiality of the upper mold and the lower mold, thereby improving the product quality.

[0004] In the paper-plastic mold with a guiding function, the positioning socket is fixedly connected to the lower mold by a horizontally arranged screw, and the positioning pin is fixedly connected to the upper mold by a horizontally arranged screw, and the positioning socket is inserted into the T-slot of the lower mold and has a U-shaped opening at its end near the upper mold, and the end of the positioning pin away from the upper mold matches the U-shaped opening. However, during the mold closing process, the positioning pin is precisely inserted into the U-shaped opening of the positioning socket, and the left and right sides of the positioning pin are in contact with the wall surface of the U-shaped opening. Since the depth of the U-shaped opening is set to match the height of the positioning pin, the contact surface between them is larger, resulting in greater friction, causing the guide mechanism to wear faster, with a short service life, and requiring frequent shutdowns for replacement.

[0005] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a molding mold with a positioning mechanism and a pulp molding machine thereof, which has a simple structure, good practicality and versatility, saves materials, has low friction, and has a long service life, thereby solving the problems of high friction and fast wear of the existing positioning mechanism.

[0007] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0008] A molding die with a positioning mechanism, comprising an upper die, a lower die and a positioning mechanism, wherein the positioning mechanism comprises a positioning pin fixed to the bottom of the upper die and a positioning socket fixed to the top of the lower die, wherein, from a top view, the positioning socket is provided with a U-shaped positioning opening suitable for the positioning pin to be inserted from top to bottom;

[0009] The lower mold is provided with an installation groove suitable for installing the positioning socket, and the lower mold is provided with a receiving groove located below the installation groove and convenient for inserting the positioning pin;

[0010] When viewed from the horizontal projection direction, there is a certain gap between the side wall surface of the accommodating groove and the side surface of the positioning pin.

[0011] In the molding mold with positioning mechanism, viewed from the horizontal projection direction, the inner side surface of the positioning pin is spaced a certain distance from the wall surface of the positioning opening, and, in the mold closing state, the bottom surface of the positioning pin is spaced a certain distance from the bottom surface of the accommodating groove.

[0012] In the molding die with the positioning mechanism, the bottom of the positioning pin is provided with a chamfer.

[0013] In the molding die with a positioning mechanism, the positioning socket is arranged on the lower die with the positioning opening facing outward, and the accommodating groove is provided with an opening facing outward.

[0014] In the molding die with a positioning mechanism, the positioning pins are respectively fixedly connected to the middle part of the side of the upper die, and the positioning sockets are respectively fixedly connected to the middle part of the side of the lower die.

[0015] In the molding die with a positioning mechanism, the positioning socket is provided with a first mounting hole which is vertically arranged and convenient for being screwed to the lower die.

[0016] In the molding die with the positioning mechanism, the positioning socket is in a "concave" shape when viewed from a top view, and the first mounting holes are arranged symmetrically on the left and right.

[0017] In the molding die with a positioning mechanism, the positioning pin is provided with a second mounting hole which is vertically arranged and convenient for being screwed to the upper die.

[0018] In the molding die with the positioning mechanism, the positioning pin is convex in shape when viewed from the front, and the second mounting holes are arranged symmetrically on the left and right.

[0019] In addition, the present invention also provides a pulp molding machine, wherein the pulp molding machine is equipped with a molding mold with a positioning mechanism as described above.

[0020] Beneficial effects:

[0021] The invention provides a forming mold with a positioning mechanism and a pulp molding machine thereof, which has a simple structure, good practicability and versatility, saves materials, has low friction and long service life, and solves the problems of high friction and fast wear of the existing positioning mechanism.

[0022] Compared with the existing positioning socket having a U-shaped opening from the main viewing angle, the present invention provides a positioning socket with a U-shaped positioning opening from a top view, and a receiving groove is provided in the lower mold at the positioning opening. The positioning pin is guided and positioned through the positioning opening, and the receiving groove provides a receiving space for the positioning pin, which can greatly reduce the friction surface, avoid frequent shutdown and replacement of the guiding mechanism due to rapid wear, and also reduce the manufacturing material of the positioning socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A structural stereogram of the molding die with a positioning mechanism provided by the present invention in a mold opening state.

[0024] Figure 2 A structural stereogram of a positioning pin in a molding die with a positioning mechanism provided by the present invention.

[0025] Figure 3 This is a structural stereogram of a positioning socket in a molding die with a positioning mechanism provided by the present invention.

[0026] Figure 4 This is a front view of the molding die with a positioning mechanism provided by the present invention in the mold opening state.

[0027] Figure 5 The present invention is a front view of the molding die with a positioning mechanism in a mold closing state.

[0028] Figure 6 for Figure 5 A magnified view of the structure of part A.

[0029] Figure 7 The present invention is a schematic diagram of the operation of the positioning pin and the positioning socket in the molding die with the positioning mechanism provided by the present invention when viewed from above.

[0030] Figure 8 A structural stereogram of a molding die with a positioning mechanism provided by the present invention in another embodiment. DETAILED DESCRIPTION

[0031] The present invention provides a forming mold with a positioning mechanism and a pulp molding machine thereof. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "horizontal", "vertical", "front view", "top view" and the like indicate the orientation or position relationship of the present invention based on the drawings, which is only for the convenience of describing the present invention and simplifying the description. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0033] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 The present invention provides a molding die with a positioning mechanism, including an upper die 1, a lower die 2 and a positioning mechanism, wherein the positioning mechanism includes a positioning pin 3 fixedly connected to the bottom of the upper die 1 by screws, and a positioning socket 4 fixedly connected to the top of the lower die 2 by screws.

[0034] Among them, from a top view, the positioning socket 4 is provided with a U-shaped positioning opening 42 suitable for the positioning pin 3 to be inserted from top to bottom. The positioning opening 42 is provided for guiding and positioning the positioning pin 3 to ensure that the upper mold 1 and the lower mold 2 can be accurately molded. When the positioning pin 3 is accurately inserted into the positioning socket 4, the left and right side surfaces of the positioning pin 3 are in corresponding contact with the left and right inner wall surfaces 431 of the positioning opening 42, achieving guided positioning and guiding the upper mold and the lower mold to be molded in the correct position.

[0035] The lower mold 2 is provided with an installation groove (not marked in the figure) suitable for installing the positioning socket 4, and the lower mold 2 is provided with a receiving groove 21 located below the installation groove and convenient for inserting the positioning pin 3. The purpose of providing the receiving groove 21 is to provide a receiving space for the positioning pin 3 so that it can continue to move downward after being inserted into the positioning opening 42, so as to complete the mold closing work of the upper mold 1 and the lower mold 2.

[0036] From the horizontal projection direction, there is a certain gap 22 between the side wall of the receiving groove 21 and the side surface of the positioning pin 3, such as a gap in the range of 1 to 10 mm. With such a design, the positioning pin 3 will not contact and rub with the receiving groove when inserted, reducing wear.

[0037] The present invention realizes the clamping work of the upper mold and the lower mold and reduces the friction of the positioning pin through the cooperation of the positioning opening of the positioning socket and the accommodating groove, thereby reducing the wear rate, extending the service life of the guide mechanism, and avoiding the problem of low production efficiency caused by frequent shutdown and replacement.

[0038] When the mold is closed, the side surface of the positioning pin 3 only contacts the inner wall surface of the positioning opening 42, generating friction heat. However, when it continues to move downward, the contact surface of the positioning pin 3 that has generated friction heat moves into the receiving groove 21. Since it does not contact the inner wall surface of the receiving groove 21, the generation of friction heat is greatly reduced, thereby reducing the wear rate of the guide mechanism.

[0039] The U-shaped opening of the existing positioning socket is not only for guiding positioning, but also for being sufficiently deep to provide a space for accommodating the positioning pin; however, the positioning socket installed on the molding die provided by the present invention only plays a guiding and positioning role, so the depth of the U-shaped opening and the height of the positioning socket are reduced compared with the existing positioning socket, thereby reducing the manufacturing material of the positioning socket.

[0040] like Figure 3 , Figure 7 As shown, from the horizontal projection direction, the inner side surface of the positioning pin 3 and the wall surface 432 of the positioning opening 42 are separated by a certain gap 44, such as a gap in the range of 1 to 10 mm. Figure 2 , Figure 5 , Figure 6 As shown, in the mold closing state, the bottom surface 34 of the positioning pin 3 is spaced from the bottom surface of the receiving groove 21 by a certain gap (not marked in the figure), such as a gap of 10 to 30 mm or more; when the gap becomes infinite, it becomes as shown in FIG. Figure 8 As shown, the bottom of the receiving groove 21 is provided with an opening.

[0041] When the upper mold 1 and the lower mold 2 are closed and squeezed, the pulp will overflow and splash onto the inner side surface 33 of the positioning pin 3, and flow down to the bottom surface 34 of the positioning pin 3. Since there is a certain distance between the inner side surface 33 of the positioning pin 3 and the wall surface 432 of the positioning opening 42, the pulp can be prevented from being contaminated by the wall surface 432 of the positioning opening 42.

[0042] Moreover, in the existing guide mechanism, the bottom surface of the positioning pin contacts the inner wall surface of the U-shaped opening of the positioning socket, and the pulp dirt stuck to the bottom surface of the positioning pin will stick to the inner wall surface of the U-shaped opening during the process. As time goes by, more and more pulp dirt will accumulate on the bottom surface of the positioning pin and the inner wall surface of the U-shaped opening, resulting in an increasing height distance between the upper mold and the lower mold in the mold closing state, so that the pulp molded product cannot meet the production requirements. In contrast, in the molding mold of the present invention, even if pulp dirt is accumulated on the bottom surface of the positioning pin 3, the above-mentioned problems existing in the existing guide mechanism will not occur.

[0043] Moreover, the guide mechanism provided by the present invention has strong versatility and can be used as a standard part - a guide positioning component for different molds, without the need to customize positioning pins and positioning sockets of different heights according to different molds.

[0044] like Figure 2 As shown, the bottom of the positioning pin 3 is provided with a chamfer 32. When the positioning pin 3 starts to contact with the positioning socket 4, the chamfer 32 can guide the positioning pin 3 to be inserted into the positioning opening 42, thereby reducing vibration and impact force during the mold closing process.

[0045] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 8 As shown, the positioning socket 4 is fixedly mounted on the lower mold 2 with the positioning opening 42 facing outward, and the receiving groove 21 is provided with an opening facing outward (not marked in the figure). If the wall surface of the positioning opening 42 and the wall surface of the receiving groove 21 are dirty, such a structural design can be used to directly clean the wall surface with a rag or flushing water, so that the dirt flows directly from the wall surface to the outside of the receiving groove.

[0046] like Figure 1 , Figure 8 As shown, the positioning pins 3 are respectively fixedly connected to the middle of the long side and the middle of the short side of the upper mold 1, and correspondingly, the positioning sockets 4 are respectively fixedly connected to the middle of the long side and the middle of the short side of the lower mold 2, thereby ensuring that the upper mold 1 and the lower mold 2 can be accurately molded without any offset in the X and Y horizontal directions.

[0047] like Figure 1 , Figure 3 , Figure 7 , Figure 8 As shown, the positioning socket 4 is provided with a first mounting hole 41 which is vertically arranged and convenient for screw connection to the lower mold 2, and the lower mold 2 is provided with a threaded connection hole corresponding to the first mounting hole 41. The first mounting hole 41 is designed as a countersunk hole. When multiple lower molds are fixed side by side at a certain interval on the same molding equipment, the axis of the first mounting hole 41 is in a vertical direction, which helps the staff to quickly disassemble and install the lower mold that needs to be replaced and maintained without being hindered by other lower molds.

[0048] like Figure 1 , Figure 3 , Figure 4 , Figure 7 As shown, from a top view, the positioning socket 4 is in a "concave" shape (or U-shaped), and correspondingly, the top of the lower mold 2 is provided with a U-shaped mounting groove suitable for mounting the positioning socket 4; and the first mounting holes 41 are arranged symmetrically. Of course, the positioning socket 4 can also be in other shapes such as a "π" shape.

[0049] like Figure 1 , Figure 2 , Figure 4As shown, the positioning pin 3 is provided with a second mounting hole 31 which is vertically arranged and convenient for screw connection to the upper mold 1, and the upper mold 1 is provided with a threaded connection hole corresponding to the second mounting hole 31. The second mounting hole 31 is designed as a countersunk hole. When multiple upper molds are fixed side by side on the same molding equipment at a certain interval, the axis of the second mounting hole 31 is in a vertical direction, which helps the staff to quickly disassemble and install the upper mold that needs to be replaced and maintained without being hindered by other upper molds.

[0050] like Figure 1 , Figure 2 , Figure 4 As shown, from the front view, the positioning pin 3 is "convex" (or T-shaped), and correspondingly, the bottom of the upper mold 1 is provided with a square installation groove suitable for installing the positioning pin 3; and the second installation hole 31 is arranged symmetrically. Of course, the positioning pin 3 can also be other shapes such as L-shaped.

[0051] In addition, the present invention also provides a pulp molding machine, wherein the pulp molding machine is equipped with a molding mold with a positioning mechanism as described above, which has the advantages of less friction, slow wear, long service life, and easy and quick maintenance.

[0052] In summary, the present invention provides a molding die with a positioning mechanism and a pulp molding machine thereof, which has a simple structure, good practicality and versatility, saves materials, has low friction, and has a long service life, thus solving the problems of high friction and fast wear of the existing positioning mechanism.

[0053] Compared with the existing positioning socket having a U-shaped opening from the main viewing angle, the present invention provides a positioning socket with a U-shaped positioning opening from a top view, and a receiving groove is provided in the lower mold at the positioning opening. The positioning pin is guided and positioned through the positioning opening, and the receiving groove provides a receiving space for the positioning pin, which can greatly reduce the friction surface, avoid frequent shutdown and replacement of the guiding mechanism due to rapid wear, and also reduce the manufacturing material of the positioning socket.

[0054] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A molding die with a positioning mechanism, comprising an upper die, a lower die and a positioning mechanism, wherein the positioning mechanism comprises a positioning pin fixed to the bottom of the upper die and a positioning socket fixed to the top of the lower die, characterized in that: From a top view, the positioning socket is provided with a U-shaped positioning opening suitable for the positioning pin to be inserted from top to bottom; from a front view, the positioning pin is "convex"; from a top view, the positioning socket is "concave"; The lower mold is provided with an installation groove suitable for installing the positioning socket, and the lower mold is provided with a receiving groove located below the installation groove and convenient for inserting the positioning pin; The left and right side surfaces of the positioning pin are in corresponding contact with the left and right inner wall surfaces of the positioning opening to achieve guided positioning and guide the upper mold and the lower mold to close the mold in the correct position; the side wall surface of the accommodating groove is spaced a certain distance from the left and right side surfaces of the positioning pin; There is a certain gap between the inner side surface of the positioning pin and the wall surface of the positioning opening, and, in the mold closing state, there is a certain gap between the bottom surface of the positioning pin and the bottom surface of the accommodating groove.

2. The molding die with a positioning mechanism according to claim 1, characterized in that: The bottom of the positioning pin is provided with a chamfer.

3. The molding die with a positioning mechanism according to claim 1, characterized in that: The positioning socket is arranged on the lower mold with a positioning opening facing outward, and the accommodating groove is provided with an opening facing outward.

4. The molding die with a positioning mechanism according to any one of claims 1 to 3, characterized in that: The positioning pins are respectively fixedly connected to the middle part of the side of the upper mold, and the positioning sockets are respectively fixedly connected to the middle part of the side of the lower mold.

5. The molding die with a positioning mechanism according to claim 4, characterized in that: The positioning socket is provided with a first mounting hole which is vertically arranged and convenient for being screwed to the lower mold.

6. The molding die with a positioning mechanism according to claim 5, characterized in that: When viewed from a top view, the first mounting holes are arranged symmetrically.

7. The molding die with a positioning mechanism according to claim 4, characterized in that: The positioning pin is provided with a second mounting hole which is vertically arranged and convenient for being screwed to the upper mold.

8. The molding die with a positioning mechanism according to claim 7, characterized in that: The second mounting holes are arranged symmetrically.

9. A pulp molding machine, characterized in that: The pulp molding machine is equipped with a molding mold with a positioning mechanism as described in any one of claims 1 to 8.

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