Clamp for machining timing chain cover plastic part

Abstract

The utility model relates to the field of clamps, and discloses a clamp for processing a plastic part of a timing chain cover, which comprises a base, a lead screw pair, a carrying table and a plurality of pressing blocks, the lead screw pair comprises a lead screw with two opposite thread forms, the lead screw is horizontally arranged, and the two ends of the lead screw are rotatably connected with the base; the two ends of the lead screw are each connected with a set of sliding blocks, and wedge-shaped faces are oppositely arranged on the two sets of sliding blocks. A timing chain cover is supported at the upper end of the carrying table, and the lower end is supported on wedge-shaped surfaces of the two groups of sliding blocks; the lower end of the carrying table is connected with a plurality of guide columns which can be inserted into the base in a sliding mode, a plurality of vertical plates are arranged on the upper end face of the base around the timing chain cover, and a pressing block buckled to the edge of the upper end face of the timing chain cover is arranged at the upper end of each set of vertical plates; according to the clamp for machining the plastic part of the timing chain cover, the timing chain cover is placed on the carrying table, and the edge of the upper end face of the timing chain cover is buckled and fixed by the pressing blocks, so that a parting line on the back face of the timing chain cover is exposed, and workers can conveniently scrape and polish the parting line.

Description

Technical Field

[0001] The utility model relates to the field of clamps, in particular to a clamp used for processing plastic parts of a timing chain cover. Background Art

[0002] The timing chain cover is the cover structure of the timing chain in the engine unit. Its materials include two categories: metal materials such as aluminum and non-metallic materials formed by injection molding. For injection-molded timing chain covers, the injection mold is usually composed of at least two modules. Therefore, the back of injection-molded timing chain cover products mostly has a parting line formed by the mold gap. After demolding, the parting line on the back of the timing chain cover needs to be manually scraped and polished clean. In the process of scraping the parting line, a clamp is required to fix the timing chain cover and expose the parting line to the operating field of view.

[0003] In view of this, a clamp for processing a timing chain cover plastic part is provided. Utility Model Content

[0004] The utility model aims to overcome the disadvantages of the background technology and provide a clamp for processing plastic parts of a timing chain cover.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A fixture for processing plastic parts of a timing chain cover, comprising a base, a screw pair, a carrier and a plurality of pressing blocks, wherein the screw pair comprises a screw with opposite tooth profiles at two ends, the screw is horizontally arranged and both ends are rotatably connected to the base; a group of sliders are connected to each of the two ends of the screw, and wedge-shaped surfaces are arranged on the two groups of sliders opposite to each other; the upper end of the carrier supports the timing chain cover, and the lower end is supported on the wedge-shaped surfaces of the two groups of sliders;

[0007] The lower end of the carrier is connected to a plurality of guide columns slidably inserted in the base, and the upper end surface of the base is provided with a plurality of vertical plates surrounding the timing chain cover, and the upper end of each group of the vertical plates is provided with a pressure block buckled on the edge of the upper end surface of the timing chain cover.

[0008] Furthermore, the pressure block is hinged on the vertical plate, and the pressure block has a power arm and a resistance arm that are connected to each other; a lifting piece is also arranged on the carrier close to the vertical plate, and each group of the lifting pieces is located below the power arm; when the carrier rises, the power arm is pressed by the lifting piece, so that the resistance arm is buckled on the upper end surface edge of the timing chain cover.

[0009] Furthermore, a column is arranged on the carrier platform close to the vertical plate, the lifting member is a spring sleeved on the column, and the power arm is provided with an avoidance groove for passing through the column.

[0010] Furthermore, a rubber pad is provided on the resistance arm for contacting the edge of the upper end surface of the timing chain cover.

[0011] Furthermore, the lower ends of the plurality of guide columns are inserted into the base on both sides of the screw rod.

[0012] Furthermore, a group of slide grooves are provided on the base, and the lower end of each group of the slide blocks is provided with a sliding part slidably connected to the slide grooves, and the two ends of the screw rod are respectively inserted into a group of the sliding parts.

[0013] Furthermore, a rotating wheel is installed at one end of the screw rod.

[0014] Furthermore, a group of connecting seats are respectively provided at both ends of the slide groove, and both ends of the screw rod are rotatably inserted into a group of connecting seats.

[0015] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0016] In the fixture for processing plastic parts of a timing chain cover of the utility model, the support height of the carrier can be adjusted by relative sliding between two sets of slide blocks under the drive of the screw pair. When in use, the timing chain cover is placed on the carrier, and the carrier is lifted upward so that the edge of the upper end surface of the timing chain cover is fastened and fixed by a plurality of pressure blocks, and the parting line on the back of the timing chain cover is exposed, so that the worker can scrape and polish the parting line clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the fixture used for processing the plastic part of the timing chain cover of the utility model;

[0018] Figure 2 A three-dimensional diagram of a pressing block in one embodiment of the utility model;

[0019] Icons: 10-base, 100-slide, 101-guide column, 102-vertical plate, 1020-pin shaft, 20-screw pair, 200-screw, 2000-rotor, 201-connecting seat, 202-slider, 2020-wedge surface, 2021-sliding part, 30-carrier, 300-lifting part, 301-post, 302-support part, 40-pressure block, 400-resistance arm, 4000-rubber pad, 401-power arm, 4010-avoidance groove, 402-pin hole, 50-timing chain cover. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] The utility model discloses a clamp for processing a plastic part of a timing chain cover 50, which is used for clamping and fixing the timing chain cover 50 when removing a parting line on the back side of the timing chain cover 50.

[0022] Reference Figure 1 to Figure 2 The fixture includes a base 10, a screw pair 20, a carrier 30 and a plurality of pressing blocks 40.

[0023] The screw pair 20 includes a screw rod 200 with opposite thread profiles at both ends, and a set of sliders 202 are installed on the different thread profiles at both ends of the screw rod 200 so that the two sets of sliders 202 can slide toward each other; specifically, refer to Figure 1 A group of slide grooves 100 extending in the left and right directions are opened on the upper end surface of the base 10, and a sliding part 2021 slidably connected to the slide groove 100 is provided at the lower end of each group of sliders 202. The two ends of the screw rod 200 are respectively inserted into a group of sliding parts 2021, and a group of connecting seats 201 are respectively provided at both ends of the slide groove 100. The screw rod 200 is placed horizontally and the two ends are rotatably inserted in a group of connecting seats 201. A rotating wheel 2000 is also installed at one end of the rod 200. By rotating the rotating wheel 2000 forward and reversely, the two groups of sliders 202 can slide toward each other.

[0024] Reference Figure 1 , wedge-shaped surfaces 2020 are provided on the two groups of sliders 202 opposite to each other, and the lower end of the platform 30 is supported on the wedge-shaped surfaces 2020 of the two groups of sliders 202. At the same time, a plurality of vertical guide columns 101 are also provided at the lower end of the platform 30, and the lower ends of each group of guide columns 101 can be slidably inserted into the base 10 up and down; in this embodiment, six groups of guide columns 101 are provided on the lower end surface of the platform 30, and the lower ends of the six groups of guide columns 101 are inserted into the base 10 on both sides of the screw rod 200.

[0025] Therefore, when the two sets of sliders 202 slide toward each other and gather together, the platform 30 can be lifted, and when the two sets of sliders 202 slide toward each other and spread apart, the platform 30 can be lowered. The lifting and lowering of the platform 30 is guided by the guide column 101, and lateral displacement is not easy to occur.

[0026] Reference Figure 1 The carrier 30 is used to support the timing chain cover 50 , and therefore, a plurality of supporting portions 302 are provided on the upper end surface of the carrier 30 .

[0027] Reference Figure 1 The upper end surface of the base 10 is also provided with a plurality of vertical plates 102 surrounding the timing chain cover 50. In the present embodiment, the upper end surface of the base 10 is provided with four groups of vertical plates 102, and the four groups of vertical plates 102 are arranged near the four groups of top corners of the timing chain cover 50. The upper end of each group of vertical plates 102 is provided with a pressing block 40 which is buckled with the edge of the upper end surface of the timing chain cover 50, that is, when the timing chain cover 50 is lifted to the highest position by the carrier 30, the four groups of top corner edges of the timing chain cover 50 are buckled and fixed by the pressing block 40.

[0028] In one embodiment, referring to Figure 1 The pressing block 40 is hinged on the vertical plate 102, that is, a horizontal pin shaft 1020 is installed on the vertical plate 102, and a pin hole 402 matching the diameter of the pin shaft 1020 is provided on the pressing block 40. After the pin shaft 1020 penetrates the pin hole 402, 40 can form a lever structure.

[0029] Therefore, refer to Figure 1 and Figure 2 The pressure block 40 has a power arm 401 and a resistance arm 400 which are connected to each other. A lifting piece 300 is also arranged on the platform 30 near each group of vertical plates 102. Each group of lifting pieces 300 is located below the power arm 401. When the platform 30 rises, the power arm 401 is pressed by the lifting piece 300, so that the resistance arm 400 can be buckled on the edge of the upper end surface of the timing chain cover 50. Therefore, the lifting piece 300 can be a group of lifting rods.

[0030] In a more preferred embodiment, referring to Figure 1 and Figure 2 , a column 301 is also provided on the carrier 30 near each set of upright plates 102, and the lifting member 300 is a spring sleeved on the column 301, so, referring to Figure 2 The power arm 401 is provided with an avoidance groove 4010 for passing the column 301; when the platform 30 is lifted, the power arm 401 is supported by the spring, and the column 301 can extend into the avoidance groove 4010.

[0031] Reference Figure 2 , wherein the length of the power arm 401 is greater than that of the resistance arm 400. When the lifting member 300 does not contact the power arm 401, one side of the power arm 401 is tilted upward due to the greater gravity, making it easier to remove the timing chain cover 50.

[0032] The spring used in the lifting member 300 has elasticity to prevent the timing chain cover 50 from being damaged by rigid impact. In addition, a rubber pad 4000 is provided on the resistance arm 400 to contact the upper end edge of the timing chain cover 50 to prevent the back of the timing chain cover 50 from being squeezed and damaged.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixture for processing plastic parts of a timing chain cover, characterized in that: The invention comprises a base (10), a screw pair (20), a carrier (30) and a plurality of pressure blocks (40), wherein the screw pair (20) comprises a screw rod (200) with opposite tooth profiles at two ends, the screw rod (200) is arranged horizontally and both ends are rotatably connected to the base (10); the two ends of the screw rod (200) are respectively connected to a group of sliders (202), and the two groups of sliders (202) are provided with wedge surfaces (2020) opposite to each other; the upper end of the carrier (30) supports a timing chain cover (50), and the lower end is supported on the wedge surfaces (2020) of the two groups of sliders (202); The lower end of the carrier (30) is connected to a plurality of guide columns (101) slidably inserted into the base (10), and the upper end surface of the base (10) is provided with a plurality of vertical plates (102) surrounding the timing chain cover (50), and the upper end of each group of the vertical plates (102) is provided with a pressure block (40) that is buckled on the edge of the upper end surface of the timing chain cover (50).

2. The fixture for processing timing chain cover plastic parts according to claim 1, characterized in that: The pressure block (40) is hinged on the vertical plate (102), and the pressure block (40) has a power arm (401) and a resistance arm (400) that are connected to each other; a lifting member (300) is also arranged on the carrier (30) close to the vertical plate (102), and each group of the lifting members (300) is located below the power arm (401); when the carrier (30) rises, the power arm (401) is pressed by the lifting member (300), so that the resistance arm (400) is buckled on the upper end surface edge of the timing chain cover (50).

3. The fixture for processing timing chain cover plastic parts according to claim 2, characterized in that: The carrier (30) is also provided with a column (301) close to the vertical plate (102); the lifting member (300) is a spring sleeved on the column (301); and the power arm (401) is provided with an avoidance groove (4010) for passing through the column (301).

4. The fixture for processing timing chain cover plastic parts according to claim 2 or 3, characterized in that: The resistance arm (400) is also provided with a rubber pad (4000) for contacting the upper end surface edge of the timing chain cover (50).

5. The fixture for processing timing chain cover plastic parts according to claim 1, characterized in that: The lower ends of the plurality of guide columns (101) are inserted into the base (10) on both sides of the screw rod (200).

6. The fixture for processing timing chain cover plastic parts according to claim 1, characterized in that: A group of slide grooves (100) are provided on the base (10), and the lower end of each group of sliders (202) is provided with a sliding part (2021) slidably connected to the slide groove (100), and the two ends of the screw rod (200) are respectively inserted into a group of sliding parts (2021).

7. The fixture for processing the timing chain cover plastic part according to claim 6, characterized in that: A rotating wheel (2000) is also installed at one end of the screw rod (200).

8. The fixture for processing timing chain cover plastic parts according to claim 6 or 7, characterized in that: A group of connecting seats (201) are respectively provided at both ends of the slide groove (100), and both ends of the screw rod (200) are rotatably inserted into a group of connecting seats (201).

Images