An injection mold for an automotive instrument panel that is convenient for cooling

Abstract

An injection mold for an automotive instrument panel that is convenient for cooling, which relates to the technical field of automotive instrument panel injection molding, includes a substrate. A cooling tank is provided on the substrate. A hydraulic cylinder is vertically provided on the substrate. The end of the telescopic shaft of the hydraulic cylinder is connected to a cross plate. A side sliding plate and a side fixed plate are connected below the cross plate. Slide bars are respectively slidably provided at the four corners of the side fixed plate. The four slide bars are jointly connected to a middle plate. Four guide rods are provided on the middle plate. The four guide rods are jointly connected to a female mold. A male mold corresponding to the female mold is connected to the side fixed plate; a guide groove plate is provided on the gantry on the substrate. Slide tables are provided on both sides of the middle plate. The side of the guide groove plate facing the middle plate is provided with a chute. The two slide tables respectively form a sliding fit with the chutes of the two guide groove plates. Immerse the female mold and the male mold into the coolant in the cooling tank. The coolant in the cooling tank is in full contact with the surfaces of the female mold and the male mold, and sufficient heat exchange is carried out. Therefore, it is convenient to cool the injection melt in the cavity of the automotive instrument panel.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile instrument panel injection molding, and more specifically, it relates to an injection mold for automobile instrument panel that is convenient for cooling. Background Art

[0002] Automobile instrument panels are usually produced by injection molding technology. During the injection molding process of automobile instrument panels, the injection melt in a high-temperature state is injected into a pre-designed mold cavity, and the cavity corresponds to the shape of the automobile instrument panel. Subsequently, after the injection melt is fully cooled and solidified in the mold to form a product with stable shape and dimensions, the formed automobile instrument panel can be smoothly taken out from the mold cavity.

[0003] In the current technology, the commonly used cooling method is water-cooled cooling. By setting cooling water channels inside the mold, low-temperature cooling water circulates in the channels, thereby absorbing the heat of the mold and the injection molded parts to achieve rapid cooling. This method has high cooling efficiency, can significantly shorten the production cycle, and is suitable for large-scale production with high requirements for cooling speed. Since the heat exchange area of the cooling water in the mold water channels is relatively limited, to a certain extent, this limits its heat dissipation effect and makes it impossible to further improve the heat dissipation capacity. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide an injection mold for automobile instrument panel that is convenient for cooling.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions: An injection mold for automobile instrument panel that is convenient for cooling, including a base plate, a cooling box is provided on the base plate, a liquid inlet and a liquid outlet are provided on the cooling box, hydraulic cylinders are vertically provided on both sides of the base plate and located on both sides of the cooling box, the ends of the telescopic shafts of the hydraulic cylinders are commonly connected to a cross plate, a side sliding plate and a side fixed plate are respectively connected below the two support plates of the cross plate, sliding rods are respectively slidably provided at the four corners of the side sliding plate, the four sliding rods are commonly connected to a middle plate, four guide rods are provided on the side of the middle plate facing away from the side sliding plate, the four guide rods are commonly connected to a female mold, and a male mold corresponding to the female mold is connected to the side fixed plate; a gantry is provided on the base plate, guide groove plates are provided on both sides of the middle plate and located on the gantry, sliding platforms are provided on both sides of the middle plate, a sliding groove is provided on the side of the guide groove plate facing the middle plate, and the sliding groove of the guide groove plate is successively composed of a lower sliding groove, an inclined sliding groove and an upper sliding groove from bottom to top, and the two sliding platforms respectively form a sliding fit with the sliding grooves of the two guide groove plates.

[0006] As a preferred technical solution of the present invention, a middle hole is provided in the middle of the side fixed plate, the injection hole on the male mold coincides with the middle hole, and an injection liquid pipe is connected to the injection hole of the male mold and extends upward through the middle hole.

[0007] As a preferred technical solution of the present invention, cooling liquid channels are provided in both the female mold and the male mold, and liquid pumps are provided at the inlets of the cooling liquid channels.

[0008] As a preferred technical solution of the present invention, a slide plate is slidably connected to the four guide rods. A ejector rod is vertically provided at the center of the side of the slide plate facing the middle plate. Round holes coinciding with the ejector rod are provided at the centers of the side slide plate and the middle plate. A plurality of demolding rods are provided on the side of the slide plate facing the female mold. The demolding rods are tightly inserted into the female mold. Springs I are sleeved outside the demolding rods, and the two ends of the springs I are respectively connected to the slide plate and the female mold; the end of the ejector rod has a round head, and an inclined driving plate for driving the ejector rod is provided on the upper part of the gantry.

[0009] As a preferred technical solution of the present invention, a sealing ring is provided on the joint surface of the female mold facing the male mold.

[0010] As a preferred technical solution of the present invention, two optical rods are vertically provided on each of the four sides of the male mold. The optical rods on each side of the male mold are slidably connected to a sealing plate in common. Springs II are sleeved outside the optical rods, and the two ends of the springs II are respectively connected to the optical rods and the sealing plate. A sealing gasket is adhesively provided on the side of the sealing plate facing the male mold. A triangular block is provided on the sealing plate, and a wedge block for driving the triangular block is provided on the female mold.

[0011] As a preferred technical solution of the present invention, both ends of the side of the sealing plate facing the male mold are chamfered at 45 degrees, and the sealing gasket covers the chamfer of the sealing plate.

[0012] As a preferred technical solution of the present invention, a cover plate is slidably provided above the cooling box. Rack I is provided on both sides above the cover plate. A gear I is meshed above the rack I. The gear I is fixedly provided on the lower rotating shaft. The lower rotating shaft is rotatably provided on the gantry. An upper rotating shaft is also rotatably provided on the gantry. A transmission mechanism is provided between the lower rotating shaft and the upper rotating shaft. The two rotating wheels of the transmission mechanism are respectively provided on the lower rotating shaft and the upper rotating shaft. A gear II is also provided on the upper rotating shaft. A rack II for meshing with the gear II is provided on the cross plate.

[0013] The beneficial effects of the present invention compared with the prior art are as follows: (1) After the female mold and the male mold of the present invention are fitted together, they form an automotive instrument panel cavity. Injecting an injection melt into the automotive instrument panel cavity, the telescopic shaft of the hydraulic cylinder contracts, driving the cross plate to move downward. The cross plate drives the side slide plate and the side fixed plate to descend synchronously. At this time, the slide block slides to the lower end of the sliding groove, and the female mold and the male mold are in a tightly fitting state. Immerse the female mold and the male mold into the cooling liquid in the cooling box. The cooling liquid in the cooling box is in full contact with the surfaces of the female mold and the male mold, and sufficient heat exchange is carried out. Therefore, it is convenient to cool the injection melt in the automotive instrument panel cavity.

[0014] (2)When the female mold and male mold of the present invention are immersed in the coolant of the cooling tank, start the liquid pump, and the coolant in the cooling tank circulates in the coolant channels of the female mold and male mold, fully taking away the heat in the female mold and male mold, and further facilitating the cooling of the injection melt of the automotive instrument panel cavity.

[0015] (3)When the female mold and male mold of the present invention are fitted, the sealing ring is compressed to prevent the coolant in the cooling tank from entering the automotive instrument panel cavity from the joint surface of the female mold and male mold. At the same time, the inclined surface of the wedge block contacts the inclined surface of the triangular block, and the gasket contacts the gap of the joint surface of the female mold and male mold, and the gasket further prevents the coolant in the cooling tank from entering the automotive instrument panel cavity from the joint surface.

[0016] (4)When the sliding table of the present invention slides in the upper chute, the female mold and male mold remain separated, while the inclined drive plate contacts the round head of the ejector rod, causing the ejector rod to move towards the female mold, and the slide plate slides towards the female mold on the guide rod, and the first spring is compressed, and the ejector rod extends from the cavity surface of the female mold, pushing out the automotive instrument panel stuck on the female mold, and automatically completing the demolding work of the automotive instrument panel.

[0017] (5)The automatically demolded automotive instrument panel of the present invention falls onto the cover plate. When the hydraulic cylinder contracts, the cover plate drives the automotive instrument panel to move to the open side of the cooling tank, facilitating the operator to take the injection-molded automotive instrument panel.

[0018] (6)When the female mold and male mold of the present invention are not working temporarily, keep the female mold and male mold in the upper position, that is, the sliding table is in the upper chute, and the cover plate covers the opening of the cooling tank, which can effectively isolate the heat exchange between the coolant in the cooling tank and the outside, prevent the loss of the cold quantity of the coolant, and has an energy-saving effect. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of an injection mold for an automotive instrument panel that is convenient for cooling according to the present invention.

[0020] Figure 2 It is a schematic structural diagram of the cooling tank according to the present invention.

[0021] Figure 3 It is a schematic structural diagram of the installation of the side sliding plate and side fixed plate according to the present invention.

[0022] Figure 4 It is a schematic structural diagram of the installation of the guide groove plate according to the present invention.

[0023] Figure 5 It is a schematic structural diagram of the installation of the liquid pump according to the present invention.

[0024] Figure 6 It is a schematic structural diagram of the installation of the ejector rod and the first spring according to the present invention.

[0025] Figure 7 This is a schematic structural diagram of the demolding rod of the present invention located inside the female mold.

[0026] Figure 8 This is a schematic structural diagram of the demolding of the demolding rod of the present invention.

[0027] Figure 9 This is a schematic structural diagram of the installation of the gasket of the present invention.

[0028] Figure 10 This is Figure 9 The partial enlarged view of part A in this.

[0029] Figure 11 This is a schematic structural diagram of the installation of the cover plate of the present invention.

[0030] Reference numerals in the drawings: 1 - substrate; 2 - cooling box; 3 - hydraulic cylinder; 4 - cross plate; 5 - side slide plate; 6 - side fixing plate; 601 - middle hole; 7 - sliding rod; 8 - middle plate; 9 - guide rod; 10 - female mold; 11 - male mold; 12 - gantry; 13 - guide groove plate; 1301 - lower sliding groove; 1302 - inclined sliding groove; 1303 - upper sliding groove; 14 - sliding table; 15 - liquid injection pipe; 16 - liquid pump; 17 - slide plate; 18 - ejector rod; 19 - demolding rod; 20 - first spring; 21 - inclined drive plate; 22 - sealing ring; 23 - optical rod; 24 - sealing plate; 25 - second spring; 26 - gasket; 27 - triangular block; 28 - wedge block; 29 - cover plate; 30 - first rack; 31 - lower rotating shaft; 32 - first gear; 33 - upper rotating shaft; 34 - transmission mechanism; 35 - second gear; 36 - second rack. Specific embodiments

[0031] In the present invention, unless otherwise stated, the orientations such as "upper, lower" are generally in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for ease of understanding and description, "left, right" are generally in the left and right shown in the drawings; "inside, outside" refer to the inside and outside relative to the contours of each component itself, but the above orientation terms are not used to limit the present invention.

[0032] Embodiment: Please refer to Figures 1-11Schematic structural diagram, the present invention provides the following technical solution: An injection mold for an automotive instrument panel that is convenient for cooling, including a substrate 1, a cooling tank 2 is provided on the substrate 1, an inlet and a drain port are provided on the cooling tank 2, and hydraulic cylinders 3 are vertically provided on both sides of the cooling tank 2 on the substrate 1. The ends of the telescopic shafts of the hydraulic cylinders 3 are commonly connected to a cross plate 4. Side sliding plates 5 and side fixed plates 6 are respectively connected below the two support plates of the cross plate 4. Slide bars 7 are respectively slidably provided at the four corners of the side sliding plate 5. The four slide bars 7 are commonly connected to a middle plate 8. Four guide bars 9 are provided on the side of the middle plate 8 facing away from the side sliding plate 5. The four guide bars 9 are commonly connected to a female mold 10. A male mold 11 corresponding to the female mold 10 is connected to the side fixed plate 6.

[0033] Among them, when the female mold 10 and the male mold 11 are in contact, an automotive instrument panel cavity is formed between the female mold 10 and the male mold 11. An injection melt is injected into the automotive instrument panel cavity, and an automotive instrument panel can be formed after cooling. Cooling liquid is stored in the cooling tank 2. The inlet and drain port of the cooling tank 2 are respectively connected to the outlet and inlet of the refrigeration equipment. The refrigeration equipment continuously cools the cooling liquid. At the same time, the refrigeration equipment provides power to circulate the cooling liquid between the cooling tank 2 and the refrigeration equipment, so that the cooling liquid in the cooling tank 2 continuously remains at a low temperature.

[0034] A gantry 12 is provided on the substrate 1. Guide groove plates 13 are provided on both sides of the middle plate 8 on the gantry 12. Slide tables 14 are provided on both sides of the middle plate 8. A chute is provided on the side of the guide groove plate 13 facing the middle plate 8. The chute of the guide groove plate 13 is composed of a lower chute 1301, an inclined chute 1302, and an upper chute 1303 from bottom to top in sequence. The two slide tables 14 respectively form a sliding fit with the chutes of the two guide groove plates 13.

[0035] Specifically, when the telescopic shaft of the hydraulic cylinder 3 is in a contracted state, the slide table 14 is located in the lower chute 1301, the female mold 10 and the male mold 11 are in contact, and the female mold 10 and the male mold 11 are immersed in the cooling liquid in the cooling tank 2. The cooling liquid in the cooling tank 2 cools the female mold 10 and the male mold 11 sufficiently, so it is convenient to cool the injection melt in the automotive instrument panel cavity. The telescopic shaft of the hydraulic cylinder 3 extends, driving the cross plate 4 to rise. The cross plate 4 drives the side sliding plate 5 and the side fixed plate 6 to rise synchronously. When the slide table 14 slides in the lower chute 1301, the female mold 10 and the male mold 11 are still in contact, and the female mold 10 and the male mold 11 are separated from the cooling liquid in the cooling tank 2, so that the female mold 10 and the male mold 11 are located above the opening of the cooling tank 2. The telescopic shaft of the hydraulic cylinder 3 continues to extend, and the slide table 14 slides in the inclined chute 1302. During this process, the slide bar 7 slides in the side sliding plate 5, and the middle plate 8 moves closer to the side sliding plate 5. Therefore, the middle plate 8 drives the guide bar 9 and the female mold 10 to separate from the male mold 11, which is convenient for taking out the formed automotive instrument panel. The telescopic shaft of the hydraulic cylinder 3 continues to extend, and the slide table 14 slides in the upper chute 1303, and the female mold 10 and the male mold 11 remain in a separated state.

[0036] A middle hole 601 is provided at the middle of the fixed plate 6. The injection hole on the punch 11 coincides with the middle hole 601. An injection liquid pipe 15 is connected to the injection hole of the punch 11, and the injection liquid pipe 15 extends upward through the middle hole 601.

[0037] Specifically, a hose is used to connect the injection liquid pipe 15 and the injection molding machine. Optionally, the hose is a silica gel steel wire high-temperature resistant hose. When the sliding table 14 is in the lower chute 1301 and the female mold 10 and the male mold 11 are in a fitting state, the injection molding machine injects the injection melt into the automotive instrument panel cavity through the hose and the injection liquid pipe 15. When the cross plate 4 descends, the female mold 10 and the male mold 11 are completely immersed in the cooling liquid in the cooling tank 2. At this time, the upper end of the injection liquid pipe 15 is still above the opening of the cooling tank 2, avoiding friction loss between the hose and the edge of the cooling tank 2 due to repeated entry into the cooling tank 2.

[0038] Cooling liquid channels are provided in both the female mold 10 and the male mold 11, and liquid pumps 16 are provided at the inlets of the cooling liquid channels.

[0039] Specifically, when the female mold 10 and the male mold 11 are immersed in the cooling liquid in the cooling tank 2, the liquid pumps 16 are started, and the cooling liquid in the cooling tank 2 circulates in the cooling liquid channels in the female mold 10 and the male mold 11, fully taking away the heat in the female mold 10 and the male mold 11, facilitating the cooling of the injection melt in the automotive instrument panel cavity.

[0040] Considering that it is necessary to automatically demold the formed automotive instrument panel. A slide plate 17 is slidably connected to the four guide rods 9. A ejector rod 18 is vertically provided at the center of the side of the slide plate 17 facing the middle plate 8. Round holes coinciding with the ejector rod 18 are provided at the centers of both the side slide plate 5 and the middle plate 8. A plurality of demolding rods 19 are provided on the side of the slide plate 17 facing the female mold 10, and the demolding rods 19 are tightly inserted into the female mold 10. Springs 20 are sleeved outside the demolding rods 19, and the two ends of the springs 20 are respectively connected to the slide plate 17 and the female mold 10; the end of the ejector rod 18 has a round head, and an inclined drive plate 21 for driving the ejector rod 18 is provided at the upper part of the gantry 12.

[0041] Specifically, when the sliding table 14 is located in the lower chute 1301, the end face of the demolding rod 19 coincides with the cavity surface of the instrument panel formed by the female mold 10 and the male mold 11. When the sliding table 14 slides in the inclined chute 1302, that is, when the female mold 10 and the male mold 11 are separated, the female mold 10 drives the demolding rod 19, the sliding plate 17 and the ejector rod 18 to move synchronously, and the ejector rod 18 passes through the round hole on the side sliding plate 5. When the sliding table 14 slides in the upper chute 1303, the female mold 10 and the male mold 11 remain separated, while the inclined drive plate 21 contacts the round head of the ejector rod 18, causing the ejector rod 18 to move towards the female mold 10, and the sliding plate 17 slides towards the female mold 10 on the guide rod 9, the first spring 20 is compressed, and the demolding rod 19 extends from the cavity surface of the female mold 10, pushing out the instrument panel stuck on the female mold 10, automatically completing the demolding work of the instrument panel.

[0042] A sealing ring 22 is provided on the joint surface of the female mold 10 facing the male mold 11. When the female mold 10 and the male mold 11 are immersed in the coolant in the cooling tank 2, it prevents the coolant in the cooling tank 2 from entering the instrument panel cavity from the joint surface of the female mold 10 and the male mold 11.

[0043] Two optical rods 23 are vertically provided on each of the four sides of the male mold 11. The optical rods 23 on each side of the male mold 11 are commonly slidably connected with a sealing plate 24. A second spring 25 is sleeved outside the optical rod 23, and the two ends of the second spring 25 are respectively connected with the optical rod 23 and the sealing plate 24. A sealing gasket 26 is adhesively provided on the side of the sealing plate 24 facing the male mold 11, and a triangular block 27 is provided on the sealing plate 24, and a wedge block 28 for driving the triangular block 27 is provided on the female mold 10.

[0044] Both ends of the side of the sealing plate 24 facing the male mold 11 are chamfered at 45 degrees, and the sealing gasket 26 covers the chamfer of the sealing plate 24.

[0045] Specifically, when the female mold 10 and the male mold 11 are separated, the second spring 25 provides a pulling force to separate the sealing gasket 26 from the side of the male mold 11. When the female mold 10 and the male mold 11 approach and fit together, the inclined surface of the wedge block 28 contacts the inclined surface of the triangular block 27, and the wedge block 28 drives the triangular block 27 to move towards the male mold 11, that is, the sealing plate 24 drives the sealing gasket 26 to move towards the joint surface gap of the female mold 10 and the male mold 11. When the sealing gasket 26 contacts the joint surface gap of the female mold 10 and the male mold 11, the sealing gasket 26 further prevents the coolant in the cooling tank 2 from entering the instrument panel cavity from the joint surface, and at the same time, the sealing gaskets 26 on the chamfers of two adjacent sealing plates 24 are mutually attached, making the sealing gasket 26 produce a better sealing effect.

[0046] Above the cooling box 2, a cover plate 29 is slidably arranged. On both sides above the cover plate 29, there is a first rack 30. Above the first rack 30, a first gear 32 is meshed. The first gear 32 is fixedly arranged on the lower rotating shaft 31. The lower rotating shaft 31 is rotatably arranged on the gantry 12. On the gantry 12, an upper rotating shaft 33 is also rotatably arranged. Between the lower rotating shaft 31 and the upper rotating shaft 33, a transmission mechanism 34 is arranged. Two rotating wheels of the transmission mechanism 34 are respectively arranged on the lower rotating shaft 31 and the upper rotating shaft 33. On the upper rotating shaft 33, there is also a second gear 35. On the cross plate 4, there is a second rack 36 for meshing with the second gear 35.

[0047] Among them, the transmission mechanism 34 is composed of two transmission wheels and a transmission belt. The transmission belt is wound around the two transmission wheels at the same time. When one transmission wheel rotates, power is transmitted through the transmission belt, thereby driving the other transmission wheel to rotate.

[0048] Specifically, when the sliding table 14 slides from the lower end to the upper end in the lower sliding groove 1301, the cover plate 29 is always located at the side position of the opening of the cooling box 2, so as to facilitate the separation of the female mold 10 and the male mold 11 from the coolant in the cooling box 2. At the same time, the cross plate 4 drives the second rack 36 to rise. When the sliding table 14 moves to the upper end of the lower sliding groove 1301, the second rack 36 starts to mesh with the second gear 35. When the sliding table 14 slides in the inclined sliding groove 1302, the second rack 36 drives the second gear 35 to rotate. Therefore, the upper rotating shaft 33 rotates synchronously. Through the transmission of power by the transmission mechanism 34, the lower rotating shaft 31 is driven to rotate. Then, through the meshing transmission of the first gear 32 and the cover plate 29, the cover plate 29 slides upward to the opening of the cooling box 2. When the sliding table 14 moves to the upper end of the inclined sliding groove 1302, the cover plate 29 covers the opening of the cooling box 2. At the same time, the second rack 36 starts to disengage from the second gear 35. When the sliding table 14 slides in the upper sliding groove 1303, the cover plate 29 continuously covers the opening of the cooling box 2, and the auto-demolding automotive instrument panel falls onto the cover plate 29.

[0049] When the sliding table 14 slides downward in sequence along the upper sliding groove 1303, the inclined sliding groove 1302 and the lower sliding groove 1301, according to the reverse process of the above principle, the cover plate 29 drives the automotive instrument panel to move to the side of the opening of the cooling box 2, which is convenient for the operator to take the injection-molded automotive instrument panel. At the same time, the cover plate 29 automatically disengages from the opening of the cooling box 2, which is convenient for the female mold 10 and the male mold 11 to immerse into the coolant in the cooling box 2.

[0050] When the female mold 10 and the male mold 11 do not work temporarily, keep the female mold 10 and the male mold 11 in the upper position, that is, make the sliding table 14 in the upper sliding groove 1303. The cover plate 29 covers the opening of the cooling box 2, which can effectively isolate the heat exchange between the coolant in the cooling box 2 and the outside, prevent the loss of the cold quantity of the coolant, and has an energy-saving effect.

[0051] A notch is provided on the cover plate 29. When the cover plate 29 moves towards the opening direction of the cooling box 2, the gantry 12 enters the notch of the cover plate 29 to prevent the gantry 12 from blocking the movement of the cover plate 29.

[0052] Working principle: In the original state, the sliding table 14 is located at the upper end of the lower chute 1301, that is, the female mold 10 and the male mold 11 are located above the opening of the cooling box 2. The female mold 10 and the male mold 11 are in contact with each other, and an automotive instrument panel cavity is formed between the female mold 10 and the male mold 11. The end face of the demolding rod 19 coincides with the cavity surface of the automotive instrument panel formed by the female mold 10 and the male mold 11. The sealing ring 22 between the female mold 10 and the male mold 11 is compressed to prevent the coolant in the cooling box 2 from entering the automotive instrument panel cavity from the joint surface of the female mold 10 and the male mold 11. At the same time, the inclined surface of the wedge block 28 contacts the inclined surface of the triangular block 27, and the gasket 26 contacts the gap of the joint surface of the female mold 10 and the male mold 11. The gasket 26 further prevents the coolant in the cooling box 2 from entering the automotive instrument panel cavity from the joint surface. At the same time, the gaskets 26 on the chamfers of two adjacent sealing plates 24 are in contact with each other, making the gasket 26 produce a better sealing effect. At this time, the cover plate 29 is located on the side of the opening of the cooling box 2. Start the injection molding machine, and inject the injection melt into the automotive instrument panel cavity through the hose and the liquid injection pipe 15.

[0053] Start the hydraulic cylinder 3, so that the telescopic shaft of the hydraulic cylinder 3 contracts, driving the cross plate 4 to move downward. The cross plate 4 drives the side sliding plate 5 and the side fixed plate 6 to descend synchronously. At this time, the sliding table 14 slides to the lower end of the lower chute 1301, and the female mold 10 and the male mold 11 are in a tightly fitting state. Immerse the female mold 10 and the male mold 11 into the coolant in the cooling box 2. The coolant in the cooling box 2 is in full contact with the surfaces of the female mold 10 and the male mold 11 for sufficient heat exchange, so it is convenient to cool the injection melt in the automotive instrument panel cavity. At the same time, start the liquid pump 16, and the coolant in the cooling box 2 circulates in the coolant channels of the female mold 10 and the male mold 11, taking away the heat in the female mold 10 and the male mold 11 sufficiently, and further facilitating the cooling of the injection melt in the automotive instrument panel cavity.

[0054] After the automotive instrument panel is fully cooled, extend the telescopic shaft of the hydraulic cylinder 3 to drive the cross plate 4 to rise. The cross plate 4 drives the side sliding plate 5 and the side fixed plate 6 to rise synchronously. When the sliding table 14 slides in the lower chute 1301, the female mold 10 and the male mold 11 are still in contact with each other. The female mold 10 and the male mold 11 are separated from the coolant in the cooling box 2, so that the female mold 10 and the male mold 11 are located above the opening of the cooling box 2. At this time, the cover plate 29 is located on the side of the opening of the cooling box 2, so that the female mold 10 and the male mold 11 can be separated from the coolant in the cooling box 2. When the sliding table 14 moves to the upper end of the lower chute 1301, the second rack 36 starts to engage with the second gear 35.

[0055] The telescopic shaft of the hydraulic cylinder 3 continuously extends, the sliding table 14 starts to slide in the inclined chute 1302, the sliding rod 7 slides in the side sliding plate 5, and the middle plate 8 approaches the side sliding plate 5. Therefore, the middle plate 8 drives the guide rod 9 and the female mold 10 to separate from the male mold 11, and the formed automotive instrument panel is stuck in the female mold 10, which is convenient for taking out the formed automotive instrument panel. The female mold 10 drives the demolding rod 19, the sliding plate 17 and the ejector rod 18 to move synchronously. The ejector rod 18 passes through the round hole on the side sliding plate 5 so that the round head of the ejector rod 18 contacts the inclined drive plate 21. The wedge block 28 separates from the triangular block 27, and the second spring 25 provides elastic force to move the sealing plate 24 and the sealing gasket 26 away from the male mold 11. At the same time, during this process, the second rack 36 drives the second gear 35 to rotate. Therefore, the upper rotating shaft 33 rotates synchronously, and the power is transmitted through the transmission mechanism 34 to drive the lower rotating shaft 31 to rotate. Then, through the meshing transmission of the first gear 32 and the cover plate 29, the cover plate 29 slides onto the opening of the cooling box 2. When the sliding table 14 moves to the upper end of the inclined chute 1302, the cover plate 29 covers the opening of the cooling box 2, and at the same time, the second rack 36 and the second gear 35 start to disengage.

[0056] The telescopic shaft of the hydraulic cylinder 3 continuously extends, the sliding table 14 slides in the upper chute 1303, the female mold 10 and the male mold 11 remain separated, and the inclined drive plate 21 contacts the round head of the ejector rod 18, causing the ejector rod 18 to move towards the female mold 10. The sliding plate 17 slides on the guide rod 9 towards the female mold 10, the first spring 20 is compressed, and the demolding rod 19 extends from the cavity surface of the female mold 10 to push out the automotive instrument panel stuck on the female mold 10. The automotive instrument panel falls onto the cover plate 29, thus automatically completing the demolding work of the automotive instrument panel.

[0057] The telescopic shaft of the hydraulic cylinder 3 shortens. During the process of the sliding table 14 moving from the upper end of the upper chute 1303 to the upper end of the lower chute 1301, in the reverse process of the above principle, the cover plate 29 drives the automotive instrument panel to move to the side of the opening of the cooling box 2, which is convenient for the operator to take the injection-molded automotive instrument panel. The female mold 10 and the male mold 11 are re-fitted to prepare for injecting into the automotive instrument panel cavity again.

[0058] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all covered by the protection scope of the present invention.

Claims

1. An injection mold for an automobile instrument panel that is easy to cool, comprising a base plate (1), a cooling box (2) being provided on the base plate (1), and a liquid inlet and a liquid outlet being provided on the cooling box (2), characterized in that: Hydraulic cylinders (3) are vertically arranged on the base plate (1) and on both sides of the cooling box (2); the ends of the telescopic shafts of the hydraulic cylinders (3) are commonly connected to a cross plate (4); the two support plates of the cross plate (4) are respectively connected to side slide plates (5) and side fixed plates (6); sliding rods (7) are slidably arranged at the four corners of the side slide plates (5); the four sliding rods (7) are commonly connected to a middle plate (8); four guide rods (9) are arranged on the side of the middle plate (8) away from the side slide plates (5); the four guide rods (9) are commonly connected to a concave die (10); the side fixed plates (6) are connected to the side slide plates (5); The concave die (10) corresponds to the convex die (11); the base plate (1) is provided with a door frame (12), the door frame (12) is provided with guide groove plates (13) on both sides of the middle plate (8), and slide platforms (14) are provided on both sides of the middle plate (8). The guide groove plate (13) is provided with a slide groove on the side facing the middle plate (8), and the slide groove of the guide groove plate (13) is composed of a lower slide groove (1301), an inclined slide groove (1302) and an upper slide groove (1303) from bottom to top, and the two slide platforms (14) respectively form a sliding fit with the slide grooves of the two guide groove plates (13); The four guide rods (9) are slidably connected to a slide plate (17). A push rod (18) is vertically arranged at the center of the side surface of the slide plate (17) facing the middle plate (8). A circular hole that coincides with the push rod (18) is arranged at the center of each of the side slide plate (5) and the middle plate (8). A plurality of demoulding rods (19) are arranged on the side surface of the slide plate (17) facing the die (10). The demoulding rods (19) are tightly inserted into the die (10). A spring (20) is sleeved on the outside of the demoulding rod (19). The two ends of the spring (20) are respectively connected to the slide plate (17) and the die (10). The end of the push rod (18) has a round head. The upper part of the door frame (12) is provided with an inclined drive plate (21) for driving the push rod (18).

2. The cooling-friendly automobile instrument panel injection mold according to claim 1, characterized in that: A middle hole (601) is provided in the middle of the side fixing plate (6); the injection hole on the punch (11) coincides with the middle hole (601); the injection hole of the punch (11) is connected to an injection pipe (15); the injection pipe (15) passes through the middle hole (601) and extends upward.

3. The cooling-friendly automobile instrument panel injection mold according to claim 1, characterized in that: The concave die (10) and the convex die (11) are both provided with cooling liquid channels, and the inlets of the cooling liquid channels are both provided with liquid pumps (16).

4. The cooling-friendly automobile instrument panel injection mold according to claim 1, characterized in that: A sealing ring (22) is provided on the mating surface of the concave die (10) facing the convex die (11).

5. The cooling-friendly automobile instrument panel injection mold according to claim 4, characterized in that: Two polished rods (23) are vertically arranged on the four sides of the punch (11), and the polished rods (23) on each side of the punch (11) are slidably connected to a sealing plate (24) together. A second spring (25) is sleeved outside the polished rod (23), and the two ends of the second spring (25) are respectively connected to the polished rod (23) and the sealing plate (24). A sealing pad (26) is pasted on the side of the sealing plate (24) facing the punch (11), a triangular block (27) is arranged on the sealing plate (24), and a wedge block (28) for driving the triangular block (27) is arranged on the die (10).

6. The cooling-friendly automobile instrument panel injection mold according to claim 5, characterized in that: Both ends of the sealing plate (24) facing the side of the male mold (11) are chamfered at 45 degrees, and the sealing gasket (26) covers the chamfers of the sealing plate (24).

7. The cooling-friendly automobile instrument panel injection mold according to claim 6, characterized in that: A cover plate (29) is slidably provided above the cooling box (2), racks (30) are provided on both sides above the cover plate (29), gears (32) are meshed above the racks (30), gears (32) are fixedly provided on a lower rotating shaft (31), the lower rotating shaft (31) is rotatably provided on a door frame (12), an upper rotating shaft (33) is also rotatably provided on the door frame (12), a transmission mechanism (34) is provided between the lower rotating shaft (31) and the upper rotating shaft (33), two rotating wheels of the transmission mechanism (34) are respectively provided on the lower rotating shaft (31) and the upper rotating shaft (33), a gear (35) is also provided on the upper rotating shaft (33), and a rack (36) for meshing with the gear (35) is provided on the cross plate (4).

Images