A processing mold for automobile exhaust pipe heat insulation cover

Abstract

The utility model relates to the technical field of automobile molds, and discloses a processing mold for automobile exhaust pipe heat insulation cover, comprising a bottom plate, a lower mold and an upper mold, wherein a cooling mechanism is arranged on the bottom plate. Through the mold closing of the upper mold and the lower mold, the tooth plate can drive the gear to rotate, so that the ball screw sleeve can drive the piston to move in a pull-out manner in the cylinder under the action of the threaded connection between the ball screw sleeve and the screw rod, so that the pressure at the front end of the piston becomes less than the atmospheric pressure, while the pressure in the cold water tank is maintained at the atmospheric pressure level. This pressure difference enables the cooling water in the cold water tank to be pushed into the cooling coil, so that when the automobile exhaust pipe heat insulation cover is injection molded, the cooling coil in the cooling cavity can quickly cool down the mold, prevent the molten material from being over-solidified on the mold surface, reduce the adhesion between the material and the mold, make the demoulding process smoother, extend the service life of the mold, and at the same time improve the molding time of the automobile exhaust pipe heat insulation cover.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile molds, in particular to a mold for processing a heat insulation cover of an automobile exhaust pipe. Background Art

[0002] With the development of the automobile industry, higher and higher performance requirements are placed on automobiles, including requirements for automobile exhaust systems. In order to reduce the impact of heat radiation from the exhaust pipe on other parts of the automobile, a heat shield is usually installed on the outside of the exhaust pipe. During the production and processing of automobile exhaust pipe heat shields, it is often necessary to process the raw materials of automobile exhaust pipe heat shields through molds to produce automobile exhaust pipe heat shields for automobile use.

[0003] The existing automobile exhaust pipe heat shield processing mold has the problems of long molding cycle and inconvenient product demoulding. At the same time, the automobile exhaust pipe heat shield will generate too high temperature on the mold when it is processed in the mold, resulting in increased wear and aging of the mold material, shortening the service life of the mold. Therefore, it is necessary to provide an automobile exhaust pipe heat shield processing mold. Utility Model Content

[0004] The utility model aims to provide a processing die for a heat shield of an automobile exhaust pipe, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a processing mold for an automobile exhaust pipe heat insulation cover, comprising a bottom plate, a lower mold and an upper mold, wherein a cooling mechanism is arranged on the bottom plate; the cooling mechanism comprises a cold water tank and a cylinder, a connecting rod is rotatably connected in the cold water tank, a plurality of groups of stirring blades are fixedly sleeved on the connecting rod, one end of the connecting rod rotatably penetrates the cold water tank and is fixedly provided with a driven gear, a cooling cavity is opened in the lower mold, a cooling coil is arranged in the cooling cavity, a water inlet end of the cooling coil penetrates the cooling cavity and is connected to the cold water tank, a water outlet end of the cooling coil penetrates the cooling cavity and is connected to the cylinder, and the cylinder A piston is slidably connected to the body, one end of the piston is rotatably connected to a screw rod, and one end of the screw rod rotatably penetrates the cylinder body; the cooling mechanism also includes a first fixed seat, a second fixed seat and two fixed blocks fixedly arranged at both ends of the lower mold, a first rotating rod is rotatably connected to the fixed block, a gear is fixedly sleeved on the first rotating rod, both ends of the upper mold are fixedly provided with a toothed plate meshing with the gear, a ball screw sleeve is rotatably connected to the first fixed seat, the screw rod is threadedly connected to the ball screw sleeve, a second rotating rod is rotatably connected to the second fixed seat, and a driving gear meshing with the driven gear is fixedly sleeved on the second rotating rod.

[0006] Preferably, a positioning rod is fixedly provided at the bottom end of the upper mold, a positioning hole adapted to the positioning rod is opened on the lower mold, the tooth plate is slidably connected to the fixed block, and the first rotating rod rotatably penetrates the fixed block.

[0007] Preferably, a first belt transmission group is arranged between the ball screw sleeve and the first rotating rod near one end of the cylinder body, and a second belt transmission group is arranged between the second rotating rod and the first rotating rod near one end of the cold water tank.

[0008] Preferably, the first fixing seat is fixedly arranged on the bottom plate near one end of the cylinder, the second fixing seat is fixedly arranged on the bottom plate near one end of the cold water tank, a supporting seat is fixedly arranged on the bottom plate, and the supporting seat is fixedly connected to the cylinder.

[0009] Preferably, the cold water tank is fixedly arranged on the bottom plate, a water injection pipe is connected to the cold water tank, and a cooler is fixedly arranged on the cold water tank.

[0010] Preferably, a support rod is fixedly provided on the bottom plate, a top plate is fixedly provided on the support rod, a hydraulic cylinder is fixedly provided on the top plate, a lifting plate is slidably connected to the support rod, a hydraulic rod of the hydraulic cylinder slides through the top plate and is fixedly connected to the lifting plate, and the lifting plate is fixedly connected to the upper mold.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1) The automobile exhaust pipe heat insulation cover processing mold is molded by the upper mold and the lower mold. The two tooth plates on the upper mold can drive the gear to rotate, and the gear drives the first rotating rod to rotate. Under the transmission action of the first belt transmission group, the ball screw sleeve can drive the piston to move in the cylinder body under the threaded connection between the ball screw sleeve and the screw rod, so that the pressure at the front end of the piston becomes less than the atmospheric pressure, and the pressure in the cold water tank is maintained at the atmospheric pressure level. This pressure difference enables the cooling water in the cold water tank to be pushed into the cooling coil. Therefore, when the automobile exhaust pipe heat insulation cover is injection molded, the cooling coil in the cooling cavity can quickly cool the mold, effectively prevent the molten material from over-solidifying on the mold surface, reduce the adhesion between the material and the mold, make the demolding process smoother, extend the service life of the mold, and at the same time improve the molding time of the automobile exhaust pipe heat insulation cover.

[0013] 2) The automobile exhaust pipe heat insulation cover processing mold is opened by the upper mold and the lower mold. The tooth plate can drive the gear to rotate in the opposite direction, so that the screw drives the piston to reset and push back, so that the cooling water in the cooling coil can be re-pressed into the cold water tank. After that, under the operation of the cooler, the cooling water with heat can be quickly cooled. At the same time, the second rotating rod rotates under the transmission action of the second belt transmission group. Under the meshing rotation of the driving gear and the driven gear, the connecting rod drives the stirring blade to stir the cooling water in the cold water tank. The flowing cooling water can improve the heat exchange efficiency, make the heat transfer more rapid, improve the cooling efficiency of the water, and enable the cooling water to be recycled, thereby reducing cost expenditure and improving the processing efficiency of the automobile exhaust pipe heat insulation cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of a processing mold for a heat insulation cover of an automobile exhaust pipe according to the utility model;

[0015] Figure 2 This is a bottom view of the three-dimensional structure of the upper mold of the utility model;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the lower mold of the utility model;

[0017] Figure 4 It is a top view of the cross-sectional structure of the lower mold of the utility model;

[0018] Figure 5 It is a three-dimensional structural schematic diagram of the cooling mechanism of the utility model.

[0019] In the figure: 1, bottom plate; 2, top plate; 3, support rod; 4, lower mold; 5, upper mold; 6, lifting plate; 7, hydraulic cylinder; 8, cooling mechanism; 801, positioning rod; 802, positioning hole; 803, tooth plate; 804, fixing block; 805, first rotating rod; 806, gear; 807, first fixed seat; 808, second fixed seat; 809, ball screw sleeve; 810, first belt transmission group; 811, support seat; 812, cylinder; 813, piston; 814, screw rod; 815, second rotating rod; 816, driving gear; 817, second belt transmission group; 818, connecting rod; 819, stirring blade; 820, driven gear; 821, cold water tank; 822, cooler; 823, cooling coil; 824, cooling chamber. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] Combination Figure 1-Figure 5 A processing mold for an automobile exhaust pipe heat insulation cover comprises a bottom plate 1, a lower mold 4 and an upper mold 5. A support rod 3 is fixedly arranged on the bottom plate 1, a top plate 2 is fixedly arranged on the support rod 3, a hydraulic cylinder 7 is fixedly arranged on the top plate 2, a lifting plate 6 is slidably connected to the support rod 3, a hydraulic rod of the hydraulic cylinder 7 slides through the top plate 2 and is fixedly connected to the lifting plate 6, the lifting plate 6 is fixedly connected to the upper mold 5, and a cooling mechanism 8 is arranged on the bottom plate 1.

[0023] See also Figure 2 , Figure 3 and Figure 5 , it is further obtained that the cooling mechanism 8 includes a cold water tank 821 and a cylinder 812, a connecting rod 818 is rotatably connected in the cold water tank 821, a plurality of stirring blades 819 are fixedly sleeved on the connecting rod 818, one end of the connecting rod 818 rotatably penetrates the cold water tank 821 and is fixedly provided with a driven gear 820, a cooling cavity 824 is opened in the lower mold 4, a cooling coil 823 is arranged in the cooling cavity 824, a water inlet end of the cooling coil 823 penetrates the cooling cavity 824 and is connected to the cold water tank 821, and a water outlet end of the cooling coil 823 penetrates the cooling cavity 824 and is connected to the cylinder 81 2 is connected, a piston 813 is slidably connected in the cylinder 812, one end of the piston 813 is rotatably connected to a screw rod 814, and one end of the screw rod 814 rotatably penetrates the cylinder 812; a positioning rod 801 is fixedly provided at the bottom end of the upper mold 5, a positioning hole 802 adapted to the positioning rod 801 is opened on the lower mold 4, the tooth plate 803 is slidably connected to the fixed block 804, the first rotating rod 805 rotatably penetrates the fixed block 804, and the cold water tank 821 is fixedly provided on the bottom plate 1, a water injection pipe is connected to the cold water tank 821, and a cooler 822 is fixedly provided on the cold water tank 821.

[0024] Specifically, when the upper mold 5 and the lower mold 4 are opened, the tooth plate 803 can drive the gear 806 to rotate in the opposite direction, so that the screw rod 814 drives the piston 813 to reset and push back, so that the cooling water in the cooling coil 823 can be re-pressed into the cold water tank 821, and then the cooling water with heat can be quickly cooled under the operation of the cooler 822. When the upper mold 5 and the lower mold 4 are closed and opened, the first rotating rod 805 near one end of the cold water tank 821 can be driven by the second belt drive group 817. The second rotating rod 815 is driven to rotate, the second rotating rod 815 drives the driving gear 816 to rotate, the driving gear 816 drives the driven gear 820 meshing therewith to rotate, the driven gear 820 drives the connecting rod 818 to rotate, and the connecting rod 818 can drive the stirring blade 819 to stir the cooling water in the cold water tank 821. The flowing cooling water can improve the heat exchange efficiency, make the heat transfer more rapid, improve the cooling efficiency of the water, enable the cooling water to be recycled, reduce the cost expenditure, and improve the processing efficiency of the automobile exhaust pipe heat insulation cover.

[0025] See also Figure 4 and Figure 5 , it is further obtained that the cooling mechanism 8 also includes a first fixed seat 807, a second fixed seat 808 and two fixed blocks 804 fixedly arranged at both ends of the lower mold 4, a first rotating rod 805 is rotatably connected in the fixed block 804, a gear 806 is fixedly sleeved on the first rotating rod 805, and a toothed plate 803 meshing with the gear 806 is fixedly arranged at both ends of the upper mold 5, a ball screw sleeve 809 is rotatably connected in the first fixed seat 807, a screw rod 814 is threadedly connected to the ball screw sleeve 809, a second rotating rod 815 is rotatably connected in the second fixed seat 808, and a gear 806 is fixedly sleeved on the second rotating rod 815 There is a driving gear 816 meshingly connected to the driven gear 820; a first belt transmission group 810 is arranged between the ball screw sleeve 809 and the first rotating rod 805 near one end of the cylinder 812, and a second belt transmission group 817 is arranged between the second rotating rod 815 and the first rotating rod 805 near one end of the cold water tank 821; a first fixed seat 807 is fixedly arranged on the bottom plate 1 near one end of the cylinder 812, and a second fixed seat 808 is fixedly arranged on the bottom plate 1 near one end of the cold water tank 821; a support seat 811 is fixedly arranged on the bottom plate 1, and the support seat 811 is fixedly connected to the cylinder 812.

[0026] Specifically, when processing the heat shield of the automobile exhaust pipe, the upper mold 5 and the lower mold 4 are molded together by controlling the hydraulic cylinder 7. When the upper mold 5 and the lower mold 4 are molded together, the positioning rod 801 on the upper mold 5 can be inserted into the positioning hole 802 to improve the accuracy of the mold closing between the upper mold 5 and the lower mold 4. When the upper mold 5 and the lower mold 4 are molded together, the two tooth plates 803 on the upper mold 5 can pass through the two fixed blocks 804 on the lower mold 4 respectively, and drive the gear 806 meshing with the tooth plate 803 to rotate, and the gear 806 drives the first rotating rod 805 to rotate. Under the transmission action of the first belt transmission group 810, the ball screw sleeve 809 can be rotated, and then the thread between the ball screw sleeve 809 and the screw rod 814 is Under the action of the connection, the screw rod 814 can drive the piston 813 to move in a pulling and pulling manner in the cylinder 812, and the piston 813 slides in a sealed manner on the inner wall of the cylinder 812, so that the pressure at the front end of the piston 813 becomes less than the atmospheric pressure, while the pressure in the cold water tank 821 is maintained at the atmospheric pressure level. This pressure difference enables the cooling water in the cold water tank 821 to be pushed into the cooling coil 823, so that when the automobile exhaust pipe heat insulation cover is injection molded, the cooling coil 823 in the cooling cavity 824 can quickly cool the mold, effectively preventing the molten material from over-solidifying on the mold surface, reducing the adhesion between the material and the mold, making the demolding process smoother, and not affecting subsequent use. At the same time, it can increase the molding time of the automobile exhaust pipe heat insulation cover.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold for processing an automobile exhaust pipe heat shield, comprising a base plate (1), a lower mold (4) and an upper mold (5), characterized in that: The bottom plate (1) is provided with a cooling mechanism (8); The cooling mechanism (8) comprises a cold water tank (821) and a cylinder (812). A connecting rod (818) is rotatably connected in the cold water tank (821). A plurality of stirring blades (819) are fixedly sleeved on the connecting rod (818). One end of the connecting rod (818) rotatably passes through the cold water tank (821) and is fixedly provided with a driven gear (820). A cooling cavity (824) is provided in the lower mold (4). A cooling coil (823), wherein the water inlet end of the cooling coil (823) passes through the cooling cavity (824) and is in communication with the cold water tank (821), and the water outlet end of the cooling coil (823) passes through the cooling cavity (824) and is in communication with the cylinder (812), a piston (813) is slidably connected in the cylinder (812), one end of the piston (813) is rotatably connected to a screw rod (814), and one end of the screw rod (814) rotatably passes through the cylinder (812); The cooling mechanism (8) further comprises a first fixed seat (807), a second fixed seat (808) and two fixed blocks (804) fixedly arranged at the two ends of the lower mould (4); a first rotating rod (805) is rotatably connected inside the fixed block (804); a gear (806) is fixedly sleeved on the first rotating rod (805); toothed plates (803) meshingly connected with the gear (806) are fixedly arranged at both ends of the upper mould (5); a ball screw sleeve (809) is rotatably connected inside the first fixed seat (807); the screw rod (814) is threadedly connected to the ball screw sleeve (809); a second rotating rod (815) is rotatably connected inside the second fixed seat (808); a driving gear (816) meshingly connected with the driven gear (820) is fixedly sleeved on the second rotating rod (815).

2. The automotive exhaust pipe heat shield processing mold according to claim 1, characterized in that: A positioning rod (801) is fixedly provided at the bottom end of the upper mold (5), a positioning hole (802) adapted to the positioning rod (801) is opened on the lower mold (4), the tooth plate (803) is slidably connected to the fixed block (804), and the first rotating rod (805) rotatably penetrates the fixed block (804).

3. The automotive exhaust pipe heat shield processing mold according to claim 1, characterized in that: A first belt transmission group (810) is arranged between the ball screw sleeve (809) and the first rotating rod (805) near one end of the barrel (812), and a second belt transmission group (817) is arranged between the second rotating rod (815) and the first rotating rod (805) near one end of the cold water tank (821).

4. The automotive exhaust pipe heat shield processing mold according to claim 1, characterized in that: The first fixing seat (807) is fixedly arranged on the bottom plate (1) near one end of the cylinder (812), and the second fixing seat (808) is fixedly arranged on the bottom plate (1) near one end of the cold water tank (821). A support seat (811) is fixedly arranged on the bottom plate (1), and the support seat (811) is fixedly connected to the cylinder (812).

5. The automotive exhaust pipe heat shield processing mold according to claim 1, characterized in that: The cold water tank (821) is fixedly arranged on the bottom plate (1), a water injection pipe is connected to the cold water tank (821), and a cooler (822) is fixedly arranged on the cold water tank (821).

6. The automotive exhaust pipe heat shield processing mold according to claim 1, characterized in that: A support rod (3) is fixedly arranged on the bottom plate (1), a top plate (2) is fixedly arranged on the support rod (3), a hydraulic cylinder (7) is fixedly arranged on the top plate (2), a lifting plate (6) is slidably connected to the support rod (3), a hydraulic rod of the hydraulic cylinder (7) slides through the top plate (2) and is fixedly connected to the lifting plate (6), and the lifting plate (6) is fixedly connected to the upper mold (5).

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