Flexible production line of foam molding line
By combining molds and continuous production, the problems of low degree of automation and large number of molds in the existing PU line production are solved, efficient PU line production is achieved, and production costs and mold replacement volume are reduced.
Patent Information
- Application Number
- CN202510263156.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-05-30
AI Technical Summary
The production methods of existing PU lines are mostly fixed cavity molding, with low degree of automation and require a large number of molds to participate in the production, resulting in high storage, handling and maintenance costs.
By combining molds and continuous production, the first mobile mold group and the second mobile mold group are alternately matched to form a molding cavity, and continuous production and arbitrary length cutting are achieved using an annular rigid uniform speed band and a sprayer.
The number of molds is reduced, the combined production of products of the same width and the cutting of any length is achieved, the replacement of molds is reduced, the production cost is reduced, and the production efficiency is improved.
Smart Images
Figure CN120056337A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of industrial production, and particularly relates to a flexible production line for foaming and molding lines. Background Art
[0002] PU lines refer to the lines made of PU synthetic raw materials, which are made of rigid PU foam. This rigid PU foam is highly mixed with two components in a perfusion machine and then enters a mold to form and form a hard skin. This material uses a fluorine-free formula and has no chemical controversy. Different physical properties such as density, elasticity, and rigidity can be obtained only by simply modifying the formula. Compared with lines made of gypsum material, metal material, etc., PU lines have advantages in terms of molding complexity, density, and light weight.
[0003] Currently, the production method of PU lines is mostly fixed cavity molding. This production method requires manual cooperation to achieve filling, mold closing, mold opening, and taking out, with a low degree of automation. And in this production method, a large number of molds are required to participate in production, and additional costs for mold storage, handling, and maintenance are required. Summary of the Invention
[0004] This application provides a flexible production line for foaming and molding lines, which combines and produces products of the same specification by using a combined mold and a continuous production method. At the same time, it can also produce products of variable lengths, and can further reduce the number of molds.
[0005] The above object of this application is achieved through the following technical solutions:
[0006] This application provides a flexible production line for foaming and molding lines, including:
[0007] Transport table;
[0008] Annular rigid uniform belt, arranged on the transport table, and forming half-cavities are arranged on the annular rigid uniform belt;
[0009] The first movable mold group and the second movable mold group alternately cooperate to inject into the half-cavity to form a molding cavity;
[0010] The first additive sprayer is used to spray a release agent on the injection half-cavity;
[0011] Two groups of second additive sprayers are respectively used to spray a release agent on the forming surfaces of the first movable mold group and the second movable mold group;
[0012] The sprayer is used to spray materials and curing agents into the molding cavity;
[0013] Among them, when the sprayer sprays materials and curing agents into the molding cavity, the first movable mold group and the second movable mold group alternately cooperate to inject into the half-cavity to form a molding cavity;
[0014] The forming cavity moves away from the sprayer at a fixed speed.
[0015] In a possible implementation of the present application, the first movable mold set includes:
[0016] A first track, arranged parallel to the transport table;
[0017] A first moving module, arranged on the first track, and a longitudinal moving arm is arranged on the first moving module;
[0018] A first horizontal moving robotic arm, arranged on the longitudinal moving arm;
[0019] A first forming mold, detachably fixed on the first horizontal moving robotic arm.
[0020] In a possible implementation of the present application, the second movable mold set includes:
[0021] A second track, arranged parallel to the transport table;
[0022] A second moving module, arranged on the second track, and a transverse moving arm is arranged on the second moving module;
[0023] A second forming mold, detachably fixed on the transverse moving arm.
[0024] In a possible implementation of the present application, closing steps or mating sealing grooves and sealing bodies are provided on the closing surfaces of the first forming mold and the second forming mold.
[0025] In a possible implementation of the present application, mating sealing grooves and sealing bodies are respectively provided on the closing surfaces of the annular rigid uniform belt and the first forming mold and the second forming mold.
[0026] In a possible implementation of the present application, the first auxiliary agent sprayer includes:
[0027] A first storage tank and a first spray gun, and the first spray gun faces the annular rigid uniform belt;
[0028] A first transfer pump, connected to the first storage tank and the first spray gun.
[0029] In a possible implementation of the present application, the sprayer includes:
[0030] A plurality of second storage tanks, used to store raw materials, curing agents, and auxiliary agents respectively;
[0031] A rigid spray pipeline and a second transfer pump, and the second transfer pump is connected to the corresponding second storage tank and the rigid spray pipeline;
[0032] Among them, there are at least two use segments of the rigid spraying pipelines with different lengths.
[0033] In a possible implementation manner of the present application, a one-way valve is provided at the end of the rigid spraying pipeline.
[0034] In a possible implementation manner of the present application, the length of the rigid spraying pipeline for spraying the curing agent is greater than the length of the rigid spraying pipeline for spraying the raw material;
[0035] The rigid spraying pipeline for spraying the raw material is arranged around the rigid spraying pipeline for spraying the curing agent.
[0036] In a possible implementation manner of the present application, in the direction away from the axis of the rigid spraying pipeline for spraying the raw material, the spraying inclination angle of the rigid spraying pipeline for spraying the curing agent tends to increase.
[0037] The beneficial effects of the present application are as follows:
[0038] The flexible production line for the foamed molding line provided by the present application uses a combined mold to achieve the purpose of reducing the number of molds. At the same time, products of the same width are merged and share a common bottom surface. In addition, a continuous production method is adopted to achieve cutting at any length, further reducing the number of molds. The cutting method at any length can also reduce the mold replacement amount to a certain extent, improving the production efficiency while reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0039] Figure 1 is a top view of a flexible production line for a foamed molding line provided by the present application.
[0040] Figure 2 is a partial movement path schematic diagram of a first molding die provided by the present application.
[0041] Figure 3 is a partial movement path schematic diagram of a second molding die provided by the present application.
[0042] Figure 4 is a schematic diagram of the principle of forming a molding cavity provided by the present application.
[0043] Figure 5 is a cross-sectional schematic diagram of the molding cavity provided by the present application.
[0044] Figure 6 is a top view of a first movable mold set provided by the present application.
[0045] Figure 7 is a structural schematic diagram of a first movable mold set provided by the present application.
[0046] Figure 8It is a structural schematic diagram of a second mobile mold set provided by this application.
[0047] Figure 9 It is a structural schematic diagram of a closed step provided by this application.
[0048] Figure 10 It is a structural schematic diagram of a seal body of a sealing groove provided by this application.
[0049] Figure 11 It is a structural schematic diagram of a first auxiliary agent sprayer provided by this application.
[0050] Figure 12 It is a structural schematic diagram of a sprayer provided by this application.
[0051] Figure 13 It is a connectivity schematic diagram of a rigid spray pipe and a one-way valve provided by this application.
[0052] Figure 14 It is a schematic diagram of the end positions of multiple rigid spray pipes provided by this application.
[0053] In the figure, 2 is the first mobile mold set, 3 is the second mobile mold set, 4 is the molding cavity, 5 is the first auxiliary agent sprayer, 6 is the second auxiliary agent sprayer, 7 is the sprayer, 11 is the transport table, 12 is the ring-shaped rigid uniform belt, 121 is the molding half cavity, 21 is the first track, 22 is the first moving module, 23 is the longitudinal moving arm, 24 is the first horizontal moving robotic arm, 25 is the first molding die, 31 is the second track, 32 is the second moving module, 33 is the lateral moving arm, 35 is the second molding die, 101 is the closed step, 102 is the sealing groove, 103 is the seal body, 51 is the first storage tank, 52 is the first spray gun, 53 is the first delivery pump, 71 is the second storage tank, 72 is the rigid spray pipe, 73 is the second delivery pump, and 74 is the one-way valve. Detailed implementation manners
[0054] The following further elaborates on the technical solutions in this application with reference to the accompanying drawings.
[0055] This application discloses a flexible production line for foamed molding profiles. In some examples, please refer to Figure 1 , the flexible production line for foamed molding profiles disclosed in this application includes a first mobile mold set 2, a second mobile mold set 3, a molding cavity 4, a first auxiliary agent sprayer 5, a second auxiliary agent sprayer 6, a sprayer 7, a transport table 11, and a ring-shaped rigid uniform belt 12.
[0056] The annular rigid uniform belt 12 is arranged around the transport table 11 and is driven by a motor (servo motor). The function of the annular rigid uniform belt 12 is to form the bottom surface of the forming cavity 4. Specifically, the forming semi-cavity 121 is provided on the annular rigid uniform belt 12, and the forming semi-cavity 121 is composed of a bottom surface and two lower side surfaces.
[0057] In some possible implementation manners, the annular rigid uniform belt 12 is made of rigid materials (such as metal materials and plastic-steel materials).
[0058] In other possible implementation manners, the annular rigid uniform belt 12 uses a flexible material as the base, and then the bases made of rigid materials are sequentially bonded to the base made of the flexible material.
[0059] Please refer to Figure 2 and Figure 3 , the first movable mold set 2 and the second movable mold set 3 cooperate alternately to inject the semi-cavity 121 to form the forming cavity 4. Here, taking a specific production process as an example, the first movable mold set 2 first forms the forming cavity 4 with the injection semi-cavity 121. Figure 4 and Figure 5 As shown in, at this time, the sprayer 7 sprays raw materials and curing agents into the forming cavity 4, and at the same time, the forming cavity 4 moves away from the sprayer 7 at a fixed speed.
[0060] In this process, products (foamed molding lines, PU lines) begin to form in the forming cavity 4 and are cured synchronously. When the end of the forming cavity 4 moves or approaches the end of the sprayer 7, the second movable mold set 3 begins to cooperate with the injection semi-cavity 121 to form the forming cavity 4.
[0061] For the patterns and shapes on the surface of the products (foamed molding lines, PU lines), they are realized through the forming surfaces on the first movable mold set 2 and the second movable mold set 3, which will not be elaborated here.
[0062] The first movable mold set 2 and the second movable mold set 3 act alternately to form the forming cavity 4 in the injection semi-cavity 121, realizing the continuous and uninterrupted appearance of the forming cavity 4. When the forming cavity 4 can appear continuously and uninterruptedly, it means that the products (foamed molding lines, PU lines) can also be continuously produced.
[0063] The products at this time can be cut to any length.
[0064] When the width of the new product is the same as that of the current product, new products can be produced by replacing the forming molds on the first movable mold set 2 and the second movable mold set 3.
[0065] The first auxiliary agent sprayer 5 is used to spray the release agent on the injection molding half cavity 121, and two groups of second auxiliary agent sprayers 6 are respectively used to spray the release agent on the molding surfaces of the first movable mold group 2 and the second movable mold group 3.
[0066] The function of the release agent is to form a layer of isolation on the injection molding half cavity 121, the molding surface of the first movable mold group 2 and the molding surface of the second movable mold group 3, so that the product (foaming molding line, PU line) can be separated from the injection molding half cavity 121, the molding surface of the first movable mold group 2 and the molding surface of the second movable mold group 3 without adhesion.
[0067] The sprayer 7 is used to spray the material and the curing agent into the molding cavity 4. The material refers to the foaming material used to manufacture the product, and the curing agent is an additive that can solidify the material.
[0068] In some examples, please refer to Figure 6 and Figure 7 , the first movable mold group 2 includes a first track 21, a first moving module 22, a longitudinal moving arm 23, a first horizontal moving robotic arm 24 and a first molding mold 25. The first track 21 is arranged parallel to the transport table 11, and the first moving module 22 is installed on the first track 21 and can perform linear reciprocating motion along the first track 21.
[0069] In some possible implementation manners, the first moving module 22 is composed of a chassis, a wheel set installed on the chassis and a driving motor.
[0070] In some other possible implementation manners, the first moving module 22 uses a ball screw pair, a moving plate and a motor to achieve movement.
[0071] The longitudinal moving arm 23 is installed on the first moving module 22, the first horizontal moving robotic arm 24 is installed on the longitudinal moving arm 23, and the first molding mold 25 is detachably fixed on the first horizontal moving robotic arm 24.
[0072] The longitudinal moving arm 23 is responsible for driving the first molding mold 25 to move in the vertical direction, and the first horizontal moving robotic arm 24 is responsible for driving the first molding mold 25 to move in the horizontal direction.
[0073] In some examples, please refer to Figure 8 , the second movable mold group 3 includes a second track 31, a second moving module 32, a transverse moving arm 33 and a second molding mold 35. The second track 31 is arranged parallel to the transport table 11, and the second moving module 32 is installed on the second track 31 and can perform linear reciprocating motion along the second track 31.
[0074] In some possible implementation manners, the second moving module 32 is composed of a chassis, a wheel set installed on the chassis and a driving motor.
[0075] In some other possible implementation manners, the first moving module 22 uses a ball screw pair, a moving plate, and a motor to achieve movement.
[0076] A lateral moving arm 33 is installed on the second moving module 32, and the second forming die 35 is detachably fixed on the lateral moving arm 33. The lateral moving arm 33 is responsible for driving the second forming die 35 to move in the vertical direction, and the lateral moving arm 33 is responsible for driving the second forming die 35 to move in the horizontal direction.
[0077] From the relevant introduction of the first mobile die set 2 and the second mobile die set 3, it can be seen that the first track 21 and the second track 31 are arranged in parallel, and their functions are both to move the first forming die 25 and the second forming die 35 in the direction of the transport table 11.
[0078] The difference between the first mobile die set 2 and the second mobile die set 3 lies in the movement trajectories of the first forming die 25 and the second forming die 35. When the first forming die 25 cooperates with the injection molding half cavity 121 to form the forming cavity 4, its movement mode is horizontal retraction - height reduction - movement - height increase - horizontal reset - forming the forming cavity 4. The lifting part is as Figure 3 shown. When the second forming die 35 cooperates with the injection molding half cavity 121 to form the forming cavity 4, its movement mode is horizontal retraction - movement - horizontal reset - forming the forming cavity 4. The horizontal movement part is as Figure 4 shown.
[0079] It should be noted that when the surface of the product (foam molding line, PU line) has complex patterns, the first mobile die set 2 and the second mobile die set 3 need to have the rising function at the same time, that is, the first mobile die set 2 and the second mobile die set 3 need to be separated from contact with the product in the vertical direction first. At this time, the structure of the first mobile die set 2 can directly achieve this, while for the second mobile die set 3, a telescopic arm in the vertical direction needs to be added between the second moving module 32 and the lateral moving arm 33.
[0080] The above two movement modes can enable the first mobile die set 2 and the second mobile die set 3 not to interfere with each other when cooperating with the injection molding half cavity 121 to form the forming cavity 4.
[0081] In some possible implementation manners, a closing step 101 is provided on the closing surfaces of the first forming die 25 and the second forming die 35, Figure 9 as shown.
[0082] In some possible implementation manners, mating seal grooves 102 and seal bodies 103 are respectively provided on the closing surfaces of the first forming die 25 and the second forming die 35, Figure 10 as shown.
[0083] In some possible implementation manners, mating seal grooves 102 and seal bodies 103 are respectively provided on the closing surfaces of the annular rigid uniform belt 12, the first forming die 25, and the second forming die 35.
[0084] In some examples, please refer to Figure 1 and Figure 11 , the first additive sprayer 5 includes a first storage tank 51, a first spray gun 52, and a first delivery pump 53. The first delivery pump 53 is connected to the first storage tank 51 and the first spray gun 52, and the first spray gun 52 faces the annular rigid uniform belt 12.
[0085] In this structure, the release agent stored in the first storage tank 51 is a liquid release agent.
[0086] The structure of the second additive sprayer 6 is the same as that of the first additive sprayer 5, and will not be described in detail here.
[0087] In some examples, please refer to Figure 12 , the sprayer 7 includes a second storage tank 71, a rigid spray pipe 72, and a second delivery pump 73. The number of the second storage tank 71, the rigid spray pipe 72, and the second delivery pump 73 is multiple groups. One group of the second storage tank 71, the rigid spray pipe 72, and the second delivery pump 73 is responsible for spraying one of the raw material, the curing agent, and the additive.
[0088] At the same time, it is also necessary that at least two lengths of the used sections of the rigid spray pipe 72 are different. The function of this setting is to prevent the product (foaming molding line, PU line) from adhering to the rigid spray pipe 72.
[0089] In some possible implementation manners, please refer to Figure 13 , a one-way valve 74 is provided at the end of the rigid spray pipe 72. The one-way valve 74 has two functions:
[0090] The first is a blocking function, which prevents the raw material, the curing agent, or the additive remaining in the rigid spray pipe 72 from falling onto the annular rigid uniform belt 12;
[0091] The first is to maintain the pressure stability in the rigid spray pipe 72. Because the length of the rigid spray pipe 72 in this application is relatively long, the pressure at the end of the rigid spray pipe 72 is likely to be unstable. The one-way valve 74 at the end of the rigid spray pipe 72 can make the pressure at the end of the rigid spray pipe 72 stable.
[0092] In some examples, please refer to Figure 14, the length of the rigid spraying pipeline 72 for spraying the curing agent is greater than that of the rigid spraying pipeline 72 for spraying the raw material, and at the same time, the rigid spraying pipeline 72 for spraying the raw material is arranged around the rigid spraying pipeline 72 for spraying the curing agent.
[0093] This method can prevent the atomized curing agent from falling on the rigid spraying pipeline 72 for spraying the raw material and avoid blockage of the rigid spraying pipeline 72 for spraying the raw material.
[0094] Furthermore, in the axial direction away from the rigid spraying pipeline 72 for spraying the raw material, the spraying inclination angle of the rigid spraying pipeline 72 for spraying the curing agent tends to increase. As can be seen from the figure, this method can avoid mutual interference between the rigid spraying pipelines 72 for spraying the raw material.
[0095] The embodiments of the specific implementation manners are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A flexible production line for foaming molding lines, characterized in that: include: Transport platform (11); An endless rigid uniform speed belt (12) is arranged on the transport platform (11), and a forming half cavity (121) is arranged on the endless rigid uniform speed belt (12); The first movable mold group (2) and the second movable mold group (3) are alternately matched with the injection half cavity (121) to form a molding cavity (4); A first auxiliary agent sprayer (5) is used to spray a mold release agent on the injection molding half cavity (121); Two sets of second auxiliary agent sprayers (6), respectively used for spraying a release agent on the molding surfaces of the first movable mold set (2) and the second movable mold set (3); A sprayer (7) for spraying materials and curing agent into the molding cavity (4); When the sprayer (7) sprays the material and the curing agent into the molding cavity (4), the first movable mold group (2) and the second movable mold group (3) alternately cooperate with the injection molding half cavity (121) to form the molding cavity (4); The molding cavity (4) moves at a fixed speed in a direction away from the sprayer (7).
2. The flexible production line of foaming molding lines according to claim 1 is characterized in that: The first movable mold set (2) comprises: A first track (21) is arranged parallel to the transport platform (11); A first movable module (22) is arranged on the first track (21), and a longitudinal movable arm (23) is arranged on the first movable module (22); A first horizontal movable mechanical arm (24) is arranged on the longitudinal movable arm (23); The first molding die (25) is detachably fixed on the first horizontally movable mechanical arm (24).
3. The flexible production line of foaming molding lines according to claim 1 or 2, characterized in that: The second movable mold set (3) comprises: A second track (31) is arranged parallel to the transport platform (11); A second movable module (32) is arranged on the second track (31), and a transverse movable arm (33) is arranged on the second movable module (32); The second molding die (35) is detachably fixed on the transverse moving arm (33).
4. The flexible production line of foaming molding lines according to claim 3 is characterized in that: A closing step (101) or a matching sealing groove (102) and a sealing body (103) are provided on the closing surfaces of the first molding die (25) and the second molding die (35).
5. The flexible production line of foaming molding lines according to claim 4, characterized in that: The closed surfaces of the annular rigid uniform speed belt (12), the first molding die (25) and the second molding die (35) are respectively provided with matching sealing grooves (102) and sealing bodies (103).
6. The flexible production line of foaming molding lines according to claim 1, characterized in that: The first auxiliary agent sprayer (5) comprises: A first storage box (51) and a first spray gun (52), wherein the first spray gun (52) faces the endless rigid uniform velocity belt (12); The first delivery pump (53) is connected to the first storage tank (51) and the first spray gun (52).
7. The flexible production line of foam molding lines according to claim 1, characterized in that: The sprayer (7) comprises: A plurality of second storage boxes (71) for storing raw materials, curing agents and auxiliary agents respectively; A hard coating pipeline (72) and a second delivery pump (73), wherein the second delivery pump (73) is connected to the corresponding second storage box (71) and the hard coating pipeline (72); There are at least two hard spray pipes (72) with different lengths of the used sections.
8. The flexible production line of foaming molding lines according to claim 7, characterized in that: A one-way valve (74) is provided at the end of the hard spraying pipeline (72).
9. The flexible production line of foaming molding lines according to claim 7, characterized in that: The length of the hard spraying pipeline (72) for spraying the curing agent is greater than the length of the hard spraying pipeline (72) for spraying the raw material; The hard spraying pipeline (72) for spraying the raw material is arranged around the hard spraying pipeline (72) for spraying the curing agent.
10. The flexible production line of foaming molding lines according to claim 9, characterized in that: In the axial direction away from the hard spraying pipe (72) for spraying the raw material, the spraying inclination angle of the hard spraying pipe (72) for spraying the curing agent tends to increase.