Motor lower cover injection mold for treadmill

Abstract

The utility model discloses a motor lower cover injection mold for a treadmill, and aims to solve the problems that the existing motor lower cover needs to be demolded after injection molding work is finished, and due to the existence of a mounting groove, the demolding is difficult, the product is easy to crack, and the breakage rate is higher. The injection mold comprises an upper mold and a lower mold, the upper mold comprises an upper fixing plate and an upper mold plate fixedly connected to the lower surface of the upper fixing plate, an upper mold cavity is formed in the lower surface of the upper mold plate, the lower mold comprises a lower fixing plate and a lower mold plate, and the front side and the rear side of the upper surface of the lower fixing plate are fixedly connected with two connecting plates. According to the utility model, the upper mold and the lower mold are separated through the press machine, the core-pulling assembly drives the movable block and the core-pulling mold to be separated from the lower cover mounting part at the moment, then the demolding assembly separates the molded motor lower cover from the lower mold core, and finally the motor lower cover is separated from the auxiliary mold, so that a product is quickly ejected from the mold core, and the integrity of the product is ensured; and product breakage is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection mold technical field, concretely relates to a motor lower cover injection mold for treadmill. BACKGROUND

[0002] The motor lower cover and the upper cover can provide physical protection for the driving motor of the treadmill, prevent impurities such as dust and abrasion from entering the motor, avoid damage to the electrical control part and mechanical components in the motor, thereby prolonging the service life of the motor and ensuring the normal operation of the treadmill.

[0003] As shown in Figure 1 The left side of the motor lower cover for the existing treadmill is provided with a mounting groove 111, the front side is provided with a groove 112, and the middle part is provided with a through hole 113. When the injection molding work of the motor lower cover for the existing treadmill is completed, the demolding process is needed. Because of the existence of the mounting groove 111, demolding is difficult, and the product is prone to breakage, so the breakage rate is high. CONTENT OF THE UTILITY MODEL

[0004] (1) Technical problem to be solved

[0005] In view of the defects of the prior art, the utility model aims at providing a motor lower cover injection mold for treadmill, which aims at solving the problem that the motor lower cover for the existing treadmill needs to be demolded after the injection molding work is completed, and the demolding is difficult due to the existence of the mounting groove, which is prone to cause the breakage of the product and has a high breakage rate.

[0006] (2) Technical scheme

[0007] In order to solve the above technical problems, the utility model provides a motor lower cover injection mold for treadmill, which comprises an upper die and a lower die. The upper die comprises an upper fixed plate and an upper die plate fixedly connected to the lower surface of the upper fixed plate. The lower surface of the upper die plate is provided with an upper die cavity. The lower die comprises a lower fixed plate and a lower die plate. Two connecting plates are fixedly connected to the upper surface of the lower fixed plate on the left and right sides. The upper surface of the connecting plate is fixedly connected with the lower die plate. A lower die core is installed on the lower die plate. A motor lower cover cavity is formed between the lower die core and the upper die cavity. A lower cover mounting portion is arranged on the left side of the motor lower cover cavity. A recess is arranged on the front side of the upper surface of the lower die core. A protrusion is fixedly connected to the inner top wall of the upper die cavity. An injection port is arranged on the upper die. The injection port is communicated with the motor lower cover cavity through three flow channel openings. A demolding assembly is arranged between the lower die plate and the lower fixed plate. A core pulling assembly corresponding to the lower cover mounting portion is arranged on the left side of the lower die plate and the upper die plate.

[0008] Preferably, the upper surface of the lower mold plate is fixedly connected with guide columns at four corners, and the lower surface of the upper mold plate is provided with guide holes corresponding to the guide columns at four corners.

[0009] Further, the demolding assembly comprises a plurality of guide rods fixedly connected between the lower fixed plate and the lower mold plate, the outer surface of the guide rod is slidably sleeved with a movable plate, the upper surface of the movable plate is fixedly connected with a plurality of demolding ejector rods, the other end of the demolding ejector rod penetrates through the lower mold plate and is located in the inside of the lower mold core, and the outer surface of the guide rod and between the movable plate and the lower mold plate is sleeved with a first spring.

[0010] Still further, the lower mold core comprises a left mold and a right mold, the left side of the left mold is provided with an auxiliary mold, the lower cover mounting portion is located at the left side of the auxiliary mold, the left side of the upper surface of the movable plate is fixedly connected with a mounting seat, the mounting seat is slidably connected with an inclined ejector rod left and right, the lower mold plate is provided with a through hole corresponding to the inclined ejector rod, and the top end of the inclined ejector rod penetrates through the through hole and is fixedly connected with the auxiliary mold.

[0011] Still further, the left side of the lower mold plate and the upper mold plate is provided with a groove, and the core pulling assembly is located in the inside of the groove.

[0012] Still further, the core pulling assembly comprises a fixed block fixedly connected to the left side of the upper mold plate and a movable block slidably connected to the left side of the lower mold core, the lower surface of the fixed block is fixedly connected with an inclined column, the left side of the movable block is provided with an inclined circular hole, the inclined column is located in the inside of the circular hole, and the lower mold plate is provided with an avoiding groove corresponding to the inclined column.

[0013] Still further, a second spring is mounted between the lower mold core and the movable block, one end of the movable block close to the lower mold core extends to the lower cover mounting portion and is fixedly connected with a core pulling mold. Advantages

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The utility model discloses, through injection molding mouth makes material enter the main runner inside of upper mould, then by three runner mouth flow into the motor lower cover cavity, lower cover mounting portion and female die that lower mold core forms, until the raw material cools down and forms the motor lower cover in the cavity, then the upper mould and lower mould are separated by the presser, at this time, the core pulling assembly drives movable block and core pulling mold to separate from lower cover mounting portion, then the demolding assembly separates the motor lower cover that forms from lower mold core, finally, the motor lower cover separates from auxiliary mold, thereby fastly ejecting the product from the mold core, and guaranteeing the integrity of product, avoiding the breakage of product. DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the motor lower cover structure schematic diagram for treadmill.

[0017] Figure 2 is a three-dimensional structure schematic diagram of the utility model.

[0018] Figure 3 is a front view cross section structure schematic diagram of the utility model.

[0019] Figure 4 is a structure schematic diagram of the lower mold core of the utility model.

[0020] Figure 5 is a structure schematic diagram of the upper mold cavity of the utility model.

[0021] Figure 6 is a structure schematic diagram of the core-pulling mold of the utility model.

[0022] The marks in the drawing are: 1, upper mold;2, lower mold;3, upper fixed plate;4, upper mold plate;5, upper mold cavity;6, lower fixed plate;7, lower mold plate;8, connecting plate;9, lower mold core;10, motor lower cover cavity;11, lower cover mounting portion;12, concave die;13, protrusion;14, injection port;15, demolding assembly;16, core-pulling assembly;17, runner port;1501, guide rod;1502, movable plate;1503, demolding ejector rod;1504, first spring;1505, mounting seat;1506, inclined ejector rod;1507, through hole;901, left side mold;902, right side mold;903, auxiliary mold;1601, fixed block;1602, movable block;1603, avoidance groove;1604, inclined column;1605, round hole;1606, second spring;1607, core-pulling mold;18, recess. DETAILED DESCRIPTION

[0023] The specific embodiment is a motor lower cover injection mold for a treadmill, and a structure schematic diagram thereof is shown in the figure. Figures 2-6As shown, the injection mold comprises an upper mold 1 and a lower mold 2, the upper mold 1 comprises an upper fixed plate 3 and an upper mold plate 4 fixedly connected to the lower surface of the upper fixed plate 3, the lower surface of the upper mold plate 4 is provided with an upper mold cavity 5, the lower mold 2 comprises a lower fixed plate 6 and a lower mold plate 7, the upper surface of the lower fixed plate 6 is fixedly connected with two connecting plates 8 on the front and rear sides, the upper surface of the connecting plate 8 is fixedly connected with the lower mold plate 7, the lower mold plate 7 is provided with a lower mold core 9, and the lower mold core 9 and the upper mold cavity 5 form a motor lower cover cavity 10, the left side of the motor lower cover cavity 10 is provided with a lower cover mounting portion 11, the upper surface of the lower mold core 9 is provided with a female die 12, the inner top wall of the upper mold cavity 5 is fixedly connected with a protrusion 13, the upper mold 1 is provided with an injection port 14, the injection port 14 is communicated with the motor lower cover cavity 10 through three flow channel openings 17, when injection, the material enters the main flow channel inside the upper mold 1 through the injection port 14, and then flows into the motor lower cover cavity 10 formed by the upper mold cavity 5 and the lower mold core 9, the lower cover mounting portion 11 and the female die 12 through the three flow channel openings 17, until the raw material is cooled in the cavity to form a motor lower cover, and the installation groove 111 of the motor lower cover can be formed in the lower cover mounting portion 11, the recess 112 of the motor lower cover is formed at the female die 12, and the through hole 113 of the motor lower cover is formed at the protrusion 13, the demolding assembly 15 is arranged between the lower mold plate 7 and the lower fixed plate 6, and the left side of the lower mold plate 7 and the upper mold plate 4 is provided with a core pulling assembly 16 corresponding to the lower cover mounting portion 11.

[0024] In the embodiment, the upper surface of the lower mold plate 7 is fixedly connected with guide columns at four corners, the lower surface of the upper mold plate 4 is provided with guide holes corresponding to the guide columns at four corners, the upper mold plate 4 and the lower mold plate 7 are separated by a press machine, at this time, the guide columns can slide in the guide holes, and when the upper mold plate 4 and the lower mold plate 7 are closed, the guide columns and the guide holes can make the upper mold 1 and the lower mold 2 more accurately closed.

[0025] As shown in Figure 1 , Figure 3 and Figure 4 : In the embodiment, the demolding assembly 15 comprises a plurality of guide rods 1501 fixedly connected between the lower fixed plate 6 and the lower mold plate 7, the outer surface of the guide rod 1501 is slidably sleeved with a movable plate 1502, the upper surface of the movable plate 1502 is fixedly connected with a plurality of demolding ejector rods 1503, the other end of the demolding ejector rod 1503 penetrates through the lower mold plate 7 and is located in the inside of the lower mold core 9, and the outer surface of the guide rod 1501 and between the movable plate 1502 and the lower mold plate 7 is sleeved with a first spring 1504.

[0026] By pushing the movable plate 1502, the demolding ejector rod 1503 can be driven to move upward, and the formed motor lower cover is separated from the lower mold core 9, which is very convenient for demolding.

[0027] As shown in Figure 3 and Figure 4As shown in the figure: in this embodiment, the lower mold core 9 comprises a left mold 901 and a right mold 902, the left side of the left mold 901 is provided with an auxiliary mold 903, the lower cover mounting portion 11 is located at the left side of the auxiliary mold 903, the left side of the upper surface of the movable plate 1502 is fixedly connected with a mounting seat 1505, the mounting seat 1505 is slidably connected with an inclined top rod 1506, the mounting seat 1505 is slidably connected with the inclined top rod 1506 through a sliding block, the lower mold plate 7 is provided with a through hole 1507 corresponding to the inclined top rod 1506, the top end of the inclined top rod 1506 penetrates through the through hole 1507 and is fixedly connected with the auxiliary mold 903, and the auxiliary mold 903 is part of the motor lower cover cavity 10.

[0028] When the formed motor lower cover is separated from the lower mold core 9, the inclined top rod 1506 moves upward and then gradually moves inward to separate the formed motor lower cover from the lower mold core 9, and finally the motor lower cover is separated from the auxiliary mold 903.

[0029] As shown in the figure: Figure 3 , Figure 4 and Figure 6 As shown in the figure: in this embodiment, the left side of the lower mold plate 7 and the upper mold plate 4 is provided with a recess 18, and the core pulling assembly 16 is located inside the recess 18; the core pulling assembly 16 comprises a fixed block 1601 fixedly connected to the left side of the upper mold plate 4 and a movable block 1602 slidably connected to the left side of the lower mold core 9, the lower surface of the fixed block 1601 is fixedly connected with an inclined column 1604, the left side of the movable block 1602 is provided with an inclined circular hole 1605, the inclined column 1604 is located inside the circular hole 1605, and the lower mold plate 7 is provided with an avoiding groove 1603 corresponding to the inclined column 1604; the second spring 1606 is installed between the lower mold core 9 and the movable block 1602, the two ends of the second spring 1606 are fixedly connected, a limit is arranged on the movable block 1602 to prevent disengagement, the restoring force of the second spring 1606 can assist the movement of the movable block 1602 to avoid the phenomenon of jamming, one end of the movable block 1602 close to the lower mold core 9 extends to the lower cover mounting portion 11 and is fixedly connected with a core pulling mold 1607, and the core pulling mold 1607 is part of the motor lower cover cavity 10.

[0030] The upper mold 1 and the lower mold 2 are separated by the press, at this time the fixed block 1601 and the inclined column 1604 are driven by the upper mold plate 4 to move upward, since the top end of the inclined column 1604 gradually shrinks inward, the inclined column 1604 can drive the movable block 1602 and the core pulling mold 1607 to disengage from the lower cover mounting portion 11 in the process of sliding in the circular hole 1605.

[0031] Working principle: when injection, material through injection port 14 into the main flow channel inside the upper die 1, then by three flow channel port 17 into the upper die cavity 5 and lower mold core 9 formed by the motor lower cover cavity 10, lower cover mounting portion 11 and die 12 into, until the raw material in the cavity cooling to form the motor lower cover, and then through the press the upper die 1 and lower die 2 is separated, at this time the upper die plate 4 with fixed block 1601 and inclined column 1604 upwardly mobile, due to the top of the inclined column 1604 gradually inward shrinkage, at this time the inclined column 1604 in the process of sliding in the round hole 1605 can drive the movable block 1602 and core pulling mold 1607 from the lower cover mounting portion 11, then push the movable plate 1502 drive demolding ejector rod 1503 and inclined ejector rod 1506 upwardly mobile, at the same time due to the inclined ejector rod 1506 is inclined, and the bottom end and mounting seat 1505 between can slide left and right, at this time the inclined ejector rod 1506 drive auxiliary mold 903 upwardly mobile can gradually move to the inside, the motor lower cover from the lower mold core 9 from the auxiliary mold 903, so that the product is quickly ejected from the mold core, and ensure the integrity of the product, avoid the product breakage.

[0032] All the technical features in the embodiment can be freely combined according to actual needs.

[0033] The above embodiment is the preferred implementation scheme of the present application, in addition to this, the present application can be realized in other ways, under the premise of not departing from the technical scheme concept, any obvious replacement is within the protection scope of the present application.

Claims

1. A motor lower cover injection mold for a treadmill, the injection mold comprising an upper mold (1) and a lower mold (2), characterized in that: The upper die (1) comprises an upper fixed plate (3) and an upper die plate (4) fixedly connected to the lower surface of the upper fixed plate (3), the lower surface of the upper die plate (4) is provided with an upper die cavity (5), the lower die (2) comprises a lower fixed plate (6) and a lower die plate (7), the upper surface of the lower fixed plate (6) is fixedly connected with two connecting plates (8) on the front and back sides, the upper surface of the connecting plate (8) is fixedly connected with the lower die plate (7), the lower die plate (7) is provided with a lower die core (9), the lower die core (9) and the upper die cavity (5) form a motor lower cover cavity (10), the left side of the motor lower cover cavity (10) is provided with a lower cover mounting portion (11), the upper surface of the lower die core (9) is provided with a female die (12) on the front side, the inner top wall of the upper die cavity (5) is fixedly connected with a protrusion (13), the upper die (1) is provided with an injection port (14), the injection port (14) is communicated with the motor lower cover cavity (10) through three flow channel openings (17), the lower die plate (7) and the lower fixed plate (6) are provided with a demolding assembly (15), the left sides of the lower die plate (7) and the upper die plate (4) are provided with a core pulling assembly (16) corresponding to the lower cover mounting portion (11).

2. The motor lower cover injection mold for a treadmill according to claim 1, wherein, The upper surface of the lower die plate (7) is fixedly connected with guide columns at four corners, and the lower surface of the upper die plate (4) is provided with guide holes corresponding to the guide columns at four corners.

3. The motor lower cover injection mold for a treadmill according to claim 2, wherein, The demolding assembly (15) comprises a plurality of guide rods (1501) fixedly connected between the lower fixed plate (6) and the lower die plate (7), the outer surface of the guide rod (1501) is slidably sleeved with a movable plate (1502), the upper surface of the movable plate (1502) is fixedly connected with a plurality of demolding ejector rods (1503), the other end of the demolding ejector rod (1503) penetrates through the lower die plate (7) and is located in the inside of the lower die core (9), and the outer surface of the guide rod (1501) and between the movable plate (1502) and the lower die plate (7) is sleeved with a first spring (1504).

4. The motor lower cover injection mold for a treadmill according to claim 3, wherein, The lower die core (9) comprises a left side die (901) and a right side die (902), the left side of the left side die (901) is provided with an auxiliary die (903), the lower cover mounting portion (11) is located on the left side of the auxiliary die (903), the left side of the upper surface of the movable plate (1502) is fixedly connected with a mounting seat (1505), the mounting seat (1505) is slidably connected with an inclined ejector rod (1506) on the left and right sides, the lower die plate (7) is provided with a through hole (1507) corresponding to the inclined ejector rod (1506), and the top end of the inclined ejector rod (1506) penetrates through the through hole (1507) and is fixedly connected with the auxiliary die (903).

5. The motor lower cover injection mold for a treadmill according to claim 4, wherein, The left sides of the lower die plate (7) and the upper die plate (4) are provided with grooves (18), and the core pulling assembly (16) is located in the inside of the grooves (18).

6. The motor lower cover injection mold for a treadmill according to claim 5, wherein, The core-pulling assembly (16) comprises a fixed block (1601) fixedly connected to the left side of the upper die plate (4) and a movable block (1602) slidably connected to the left side of the lower die core (9), the lower surface of the fixed block (1601) is fixedly connected with an inclined column (1604), the left side of the movable block (1602) is provided with an inclined circular hole (1605), the inclined column (1604) is located in the circular hole (1605), and the lower die plate (7) is provided with an avoiding groove (1603) corresponding to the inclined column (1604).

7. The motor lower cover injection mold for a treadmill according to claim 6, wherein, A second spring (1606) is installed between the lower die core (9) and the movable block (1602), and one end of the movable block (1602) close to the lower die core (9) extends to the lower cover mounting portion (11) and is fixedly connected with a core-pulling die (1607).

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