Die for switching production of automobile doorsill strips with different lengths and use and application of die

Abstract

The invention relates to a die for switching production of automobile doorsill strips with different lengths and use and application thereof.The die comprises a die body, a driving oil cylinder, a sliding block and a knife switch, a die cavity used for forming the automobile doorsill strips is formed below the die body, the sliding block is arranged on the upper and lower sides of the die body, the driving oil cylinder is arranged above the die body, and the knife switch is arranged on the lower side of the die body. A knife switch is arranged below the driving oil cylinder, the driving oil cylinder is used for driving the knife switch, the knife switch extends into the die cavity when the short-side automobile doorsill strip is formed, and the knife switch retreats from the die cavity when the long-side automobile doorsill strip is formed. Compared with the prior art, the knife switch is controlled through the driving oil cylinder, the die structure is switched through one key, the BEV threshold and the ICE threshold are produced at the same time, the cost can be saved, and the production efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the field of automobile parts molds, and particularly to a mold for switching production of automobile sill strips with different lengths, and its use and application. Background Art

[0002] Currently, in the mold forming structure, there are two configurations for the BMW project sill. One is the BEV sill (as shown in Figure 2 ), and the other is the ICE sill (as shown in Figure 3 ). The ICE sill is used for traditional internal combustion engine vehicles, and the BEV sill is used for battery electric vehicles. The bottom flange length of the ICE sill is 44.4 mm longer than that of the BEV sill.

[0003] For the product structure of the BMW project sill, the relatively mature solutions in the industry are as follows:

[0004] 1) As shown in Figure 4 and Figure 5 , the solution uses two moving molds + one fixed mold. When producing sill products with different configurations, the moving mold needs to be replaced in advance, resulting in high investment costs and affecting production efficiency;

[0005] 2) As shown in Figure 6 and Figure 7 , the solution uses one mold + one punching machine, resulting in high investment costs and material waste. Summary of the Invention

[0006] The purpose of the present invention is to provide a mold for switching production of automobile sill strips with different lengths, and its use and application, to solve the defects existing in the prior art. The mold controls the guillotine through a driving oil cylinder, switches the mold structure with one key, and produces both BEV sills and ICE sills simultaneously, which can save costs and improve production efficiency.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A mold for switching production of automobile sill strips with different lengths, including a mold body, a driving oil cylinder, a slider, and a guillotine,

[0009] A mold cavity for forming automobile sill strips is provided below the mold body. The slider is arranged on the top and bottom sides of the mold body. The driving oil cylinder is arranged above the mold body, and a guillotine is arranged below the driving oil cylinder. The driving oil cylinder is used to drive the guillotine.

[0010] When forming the short-side automobile sill strip, the guillotine extends into the mold cavity. When forming the long-side automobile sill strip, the guillotine retracts from the mold cavity.

[0011] In an embodiment of the present invention, the driving oil cylinder is externally connected to the ejector pin of an injection molding machine, and the ejector pin of the injection molding machine is used to control the driving oil cylinder.

[0012] In an embodiment of the present invention, a tubing joint is provided on the driving oil cylinder, and the tubing joint is used to connect the oil circuit and the driving oil cylinder.

[0013] In an embodiment of the present invention, a through hole is provided on the slider, a connecting rod is provided below the driving oil cylinder, the connecting rod passes through the through hole and is connected to the knife gate, and the connecting rod is used to connect the driving oil cylinder and the knife gate.

[0014] In an embodiment of the present invention, a glue injection hole is provided on the mold body, and the glue injection hole is communicated with the mold cavity.

[0015] When forming the short-side automotive door sill strip, the knife gate extends into the mold cavity, and the length of the glue injection area at the bottom flanging in the mold cavity becomes shorter. When forming the long-side automotive door sill strip, the knife gate retracts from the mold cavity, and the length of the glue injection area at the bottom flanging in the mold cavity remains the original length.

[0016] In an embodiment of the present invention, a connection head is provided between the connecting rod and the knife gate, and the connection head is used to fasten the knife gate below the connecting rod to prevent the knife gate from falling off.

[0017] In an embodiment of the present invention, a water joint is provided on one side of the slider, and the water joint is used to connect the water circuit and the slider.

[0018] In an embodiment of the present invention, a mold clamping screw is provided on the other side of the slider, and the mold clamping screw is used to prevent the knife gate from falling when the injection molding machine is accidentally depressurized.

[0019] The present invention also provides a method for using a mold for switching the production of automotive door sill strips of different lengths, and the specific steps are as follows:

[0020] S1. Produce ICE door sills: The ejector pin of the injection molding machine controls the driving oil cylinder to drive the knife gate to retract, the knife gate retracts from the mold cavity, raw materials are injected into the mold cavity from the glue injection hole, the mold is placed in a cooling device for cooling, and the ICE door sills are taken out of the mold cavity after cooling and forming;

[0021] S2. Produce BEV door sills: The ejector pin of the injection molding machine controls the driving oil cylinder to drive the knife gate to eject, the knife gate extends into the mold cavity, raw materials are injected into the mold cavity from the glue injection hole, the mold is placed in a cooling device for cooling, and the BEV door sills are taken out of the mold cavity after cooling and forming.

[0022] In addition, the present invention also provides an application of a mold for switching the production of automotive door sill strips of different lengths, and the above mold is applied to the field of automotive interior and exterior decoration.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention controls the guillotine through a driving oil cylinder, switches the mold structure with one key, simultaneously produces BEV thresholds and ICE thresholds, improves the production efficiency of thresholds with similar structures, reduces equipment costs, and enhances production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of an automotive threshold strip;

[0026] Figure 2 It is a sectional view of a BEV threshold;

[0027] Figure 3 It is a sectional view of an ICE threshold;

[0028] Figure 4 It is a schematic structural diagram of a moving mold in the prior art;

[0029] Figure 5 It is a schematic structural diagram of a stationary mold in the prior art;

[0030] Figure 6 It is a schematic structural diagram of a punching machine in the prior art;

[0031] Figure 7 It is a schematic structural diagram of a mold in the prior art;

[0032] Figure 8 It is a front view of the mold of the present invention;

[0033] Figure 9 It is a schematic diagram of the bottom structure of the mold of the present invention;

[0034] Figure 10 It is a sectional view of the mold of the present invention;

[0035] Figure 11 It is a schematic structural diagram of the mold of the present invention;

[0036] Figure 12 It is a flowchart of producing an ICE threshold in the present invention;

[0037] Figure 13 It is a flowchart of producing a BEV threshold in the present invention.

[0038] Description of the drawing reference numerals: 1, automotive threshold strip; 2, driving oil cylinder; 3, guillotine; 4, slider; 5, oil pipe joint; 6, guillotine position; 7, connecting rod; 8, connector; 9, mold clamping screw; 10, water joint; a, difference in the bottom flanging length between the ICE threshold and the BEV threshold. DETAILED DESCRIPTION OF THE INVENTION

[0039] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and the detailed implementation manners and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0040] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0042] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0043] Embodiment

[0044] See Figures 8 to 11 , this embodiment provides a mold for switching to produce automotive sill strips of different lengths, including a mold body, a driving oil cylinder 2, a slider 4, and a guillotine 3.

[0045] A cavity for forming the automotive sill strip 1 is provided below the mold body. The slider 4 is arranged on the top and bottom sides of the mold body. The driving oil cylinder 2 is arranged above the mold body. A guillotine 3 is arranged below the driving oil cylinder 2. The driving oil cylinder 2 is used to drive the guillotine 3.

[0046] When forming the short-side automotive sill strip 1, the guillotine 3 extends into the cavity. When forming the long-side automotive sill strip 1, the guillotine 3 retracts from the cavity.

[0047] In this embodiment, the driving oil cylinder 2 is externally connected to the ejector pin of the injection molding machine, and the ejector pin of the injection molding machine is used to control the driving oil cylinder 2.

[0048] In this embodiment, an oil pipe joint 5 is provided on the driving oil cylinder 2, and the oil pipe joint 5 is used to connect the oil circuit and the driving oil cylinder 2.

[0049] In this embodiment, a through hole is provided on the slider 4, and a connecting rod 7 is provided below the driving oil cylinder 2. The connecting rod 7 passes through the through hole and is connected to the knife gate 3. The connecting rod 7 is used to connect the driving oil cylinder 2 and the knife gate 3.

[0050] In this embodiment, a glue injection hole is provided on the mold body, and the glue injection hole is communicated with the mold cavity.

[0051] When forming the short-side automotive door sill strip 1, the knife gate 3 extends into the mold cavity, and the length of the glue injection area of the bottom flanging in the mold cavity becomes shorter. When forming the long-side automotive door sill strip 1, the knife gate 3 retracts from the mold cavity, and the length of the glue injection area of the bottom flanging in the mold cavity remains the original length.

[0052] In this embodiment, a connection head 8 is provided between the connecting rod 7 and the knife gate 3. The connection head 8 is used to fasten the knife gate 3 below the connecting rod 7 to prevent the knife gate 3 from falling off.

[0053] In this embodiment, a water joint 10 is provided on one side of the slider 4, and the water joint 10 is used to connect the water circuit and the slider 4.

[0054] In this embodiment, a mold clamping screw 9 is provided on the other side of the slider 4. The mold clamping screw 9 is used to prevent the knife gate 3 from falling when the injection molding machine accidentally releases pressure.

[0055] This embodiment also provides a method for using a mold for switching production of automotive door sill strips of different lengths, and the specific steps are as follows:

[0056] S1. Produce ICE door sill: The sub-control driving oil cylinder 2 of the injection molding machine drives the knife gate 3 to retract. The knife gate 3 retracts from the mold cavity, and raw materials are injected into the mold cavity through the glue injection hole. The mold is placed in a cooling device for cooling, and after cooling and forming, the ICE door sill is taken out from the mold cavity.

[0057] S2. Produce BEV door sill: The sub-control driving oil cylinder 2 of the injection molding machine drives the knife gate 3 to eject. The knife gate 3 extends into the mold cavity, and raw materials are injected into the mold cavity through the glue injection hole. The mold is placed in a cooling device for cooling, and after cooling and forming, the BEV door sill is taken out from the mold cavity.

[0058] The above description of the embodiments is provided to enable those of ordinary skill in the art to understand and use the invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present invention is not limited to the above embodiments, and all improvements and modifications made by those skilled in the art without departing from the scope of the present invention according to the disclosure of the present invention should be within the protection scope of the present invention.

Claims

1. A mold for switching to produce automotive sill strips of different lengths, characterized in that, It includes a mold body, a driving oil cylinder (2), a slider (4) and a guillotine knife (3). A mold cavity for forming an automotive sill strip (1) is provided below the mold body. The slider (4) is arranged on the top and bottom sides of the mold body. The driving oil cylinder (2) is arranged above the mold body. A guillotine knife (3) is provided below the driving oil cylinder (2). The driving oil cylinder (2) is used to drive the guillotine knife (3). When forming a short-side automotive sill strip (1), the guillotine knife (3) extends into the mold cavity. When forming a long-side automotive sill strip (1), the guillotine knife (3) retracts from the mold cavity.

2. The mold for switching to produce automotive sill strips of different lengths according to claim 1, characterized in that, The driving oil cylinder (2) is externally connected to an injection molding machine ejector, and the injection molding machine ejector is used to control the driving oil cylinder (2).

3. A mold for switching to produce automotive sill strips of different lengths according to claim 1, characterized in that, An oil pipe joint (5) is provided on the driving oil cylinder (2), and the oil pipe joint (5) is used to connect the oil circuit and the driving oil cylinder (2).

4. A mold for switching to produce automotive sill strips of different lengths according to claim 1, characterized in that, A through hole is provided on the slider (4). A connecting rod (7) is provided below the driving oil cylinder (2). The connecting rod (7) passes through the through hole and is connected to the guillotine knife (3). The connecting rod (7) is used to connect the driving oil cylinder (2) and the guillotine knife (3).

5. A mold for switching to produce automotive sill strips of different lengths according to claim 4, characterized in that, A connecting head (8) is provided between the connecting rod (7) and the guillotine knife (3). The connecting head (8) is used to fasten the guillotine knife (3) below the connecting rod (7) to prevent the guillotine knife (3) from falling off.

6. A mold for switching to produce automotive sill strips of different lengths according to claim 1, characterized in that, A glue injection hole is provided on the mold body, and the glue injection hole is communicated with the mold cavity. When forming a short-side automotive sill strip (1), the guillotine knife (3) extends into the mold cavity, and the glue injection area of the bottom flanging in the mold cavity becomes shorter. When forming a long-side automotive sill strip (1), the guillotine knife (3) retracts from the mold cavity, and the glue injection area of the bottom flanging in the mold cavity maintains its original length.

7. A mold for switching to produce automotive sill strips of different lengths according to claim 1, characterized in that, A water joint (10) is provided on one side of the slider (4), and the water joint (10) is used to connect the water circuit and the slider (4).

8. A mold for switching to produce automotive sill strips of different lengths according to claim 1, characterized in that, A mold clamping screw (9) is provided on the other side of the slider (4), and the mold clamping screw (9) is used to prevent the guillotine knife (3) from falling when the injection molding machine accidentally relieves pressure.

9. A method for using a mold for switching to produce automotive sill strips of different lengths as described in any one of claims 1-8, characterized in that, The specific steps are as follows: S1. Produce an ICE sill: The injection molding machine ejector controls the driving oil cylinder (2) to drive the guillotine knife (3) to retract. The guillotine knife (3) retracts from the mold cavity. Raw materials are injected into the mold cavity through the glue injection hole. The mold is placed in a cooling device for cooling. After cooling and forming, the ICE sill is taken out of the mold cavity. S2. Produce a BEV sill: The injection molding machine ejector controls the driving oil cylinder (2) to drive the guillotine knife (3) to eject. The guillotine knife (3) extends into the mold cavity. Raw materials are injected into the mold cavity through the glue injection hole. The mold is placed in a cooling device for cooling. After cooling and forming, the BEV sill is taken out of the mold cavity.

10. Application of a mold for switching to produce automotive sill strips of different lengths, characterized in that, The mold according to any one of claims 1-8 is applied to the field of automotive interior and exterior trim.

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