WO2020215494A1 - Production line-based work fixture - Google Patents

Abstract

A production line-based work fixture relates to the field of engines, and comprises a conveying platform (1), a feeding chamber (2), and fixtures (6). A machining station (5) is provided in the middle of an upper end surface of the conveying platform. A first transmission belt (3) and a second transmission belt (4) are additionally provided on the upper end surface of the conveying platform. The first transmission belt and the second transmission belt are respectively provided on two sides of the machining station. The fixtures (6) are respectively mounted on upper end surfaces of the first transmission belt and the second transmission belt. The fixture comprises a base (61) and a first positioning portion (602) mounted on a front end of the base. The first positioning portion comprises a mounting frame (622) and a mounting platform (62) fixedly embedded in the middle of the mounting frame. A second positioning portion (603) is mounted on a front end of the first positioning portion. The second positioning portion comprises a positioning platform (63). A positioning engagement base (64) is mounted on an upper end of the positioning platform. Two positioning engagement bases and two positioning platforms are provided, and are configured to be symmetrical. The positioning engagement base and the front end of the base define a circular positioning recess. The present application improves the positioning efficiency and the positioning performance of a fixture.

Description

A tooling fixture based on assembly line Technical field

The invention relates to the field of clamps, in particular to a tooling clamp based on an assembly line.

Background technique

With the continuous development of society and the continuous advancement of technology, mechanization, automation, and standardized production have gradually become the development trend. Existing tooling fixtures are generally designed individually for a specific product, which often takes a lot of time and money, or uses conventional fixtures for manual positioning, and the production process is also relatively cumbersome.

Therefore, it is necessary to invent a tooling fixture based on assembly line to solve the above problems.

Summary of the invention

The purpose of the present invention is to provide a tooling fixture based on an assembly line, which realizes stable positioning of irregular workpieces through two positioning structures of a first positioning part and a second positioning part, so as to solve the existing problems proposed in the background art. Tooling fixtures are generally designed individually for a specific product, which often requires a lot of time and money, or the use of conventional fixtures for manual positioning, which is also a cumbersome problem in production.

In order to achieve the above objective, the present invention provides the following technical solutions: an assembly line-based tooling fixture, including a conveying table, a feeding bin, and a fixture;

A processing station is provided in the middle of the upper end surface of the transmission table, and a first transmission belt and a second transmission belt are additionally provided on the upper end surface of the transmission table. The first transmission belt and the second transmission belt are separately arranged on both sides of the processing station;

The clamps are respectively installed on the upper end surfaces of the first transmission belt and the second transmission belt, and the clamps include a base;

A first positioning part is installed at the front end of the base platform, the first positioning part includes a mounting frame, and a mounting platform is fixedly embedded in the middle of the mounting frame;

A second positioning part is installed at the front end of the first positioning part, and the second positioning part includes a positioning table;

A positioning clamp is installed on the upper end of the positioning table, the positioning clamp and the positioning table are both provided with two symmetrical to each other, and the front end of the positioning clamp and the base table encloses a circular positioning groove.

Preferably, it further includes a drive motor, one end of the drive motor is rotatably connected to the first drum, one end of the first drum is fixedly connected to the second drum through the connecting shaft, the first transmission belt is drivingly connected to the first drum, The second transmission belt is in transmission connection with the second drum.

Preferably, a first thousand-minute knob is embedded in the installation table;

A second thousand-minute knob is embedded in the bottom of the installation table;

The first thousand-minute knob and the second thousand-minute knob are distributed up and down, and the first and second thousand-minute knobs are both provided with two sets symmetrical to each other;

The front ends of the first and second micrometer knobs are both provided with positioning heads, and the two positioning heads are in contact with each other.

Preferably, the mounting frame has an L-shaped structure, the top of the mounting frame is fixedly mounted with an externally threaded corner cylinder, and the bottom of the externally threaded corner cylinder is fixedly connected to the mounting platform through a positioning shaft.

Preferably, a positioning slot is provided on the outer wall of the mounting platform on the side close to the mounting frame, and a guide seat is provided in front of the side of the mounting platform near the mounting frame, and the guide seat is inserted into the positioning slot, and the guide seat is fixedly connected to the mounting frame. .

Preferably, a pad is fixedly installed at the bottom of the mounting frame, and a limit slot is opened on the bottom end surface of the pad;

A limit block is fixedly installed at the bottom of the cushion table, the limit block is fixedly connected with the base platform, and the limit block is inserted into the limit slot.

Preferably, the front end of the base is provided with a semicircular bayonet;

A sliding table is provided at the bottom of the base, and the sliding table is in sliding connection with the base;

A hydraulic push rod is connected to the rear side of the base.

Preferably, the feed bin is erected on the top of the outer edge of the conveying platform, and two feed ports are opened at the bottom of the feed bin, and the feed ports and the clamps correspond to each other.

Preferably, the angle between the first thousand-minute knob and the second thousand-minute knob is between 15-30;

The micrometer knob includes a positioning knob and a fine adjustment knob, and the positioning knob is rotationally connected with a motor.

Preferably, a support is fixedly installed at the bottom of the transfer platform, the support is symmetrically distributed at both ends of the transfer platform, and the support includes two symmetrical legs.

Technical effects and advantages of the present invention:

1. The present invention mainly adopts two important parts when positioning and clamping the product, the first positioning part and the second positioning part 603. The second positioning part 603 is a fixed structure and is matched with an adjustable base. Work to form a clamping and positioning groove with a circular cross-section. The positioning groove is suitable for the positioning of most parts. The first positioning part is mainly composed of a micrometer knob. The micrometer knob has four centrally installed groups. , The micrometer knob also includes two knobs, coarse adjustment and fine adjustment, even for irregular workpieces can be positioned stably;

2. In addition, the assembly line and the feed bin and the clamp involved in the present invention are synergistic and practical. The parts that fall intermittently from the feed bin directly enter the positioning groove on the clamp, and are positioned and clamped by themselves, and then carried out by the transmission belt For transmission, there are two sets of transmission belts, and a processing station is set between the transmission belts. Processing equipment can be installed on the processing station to process the workpiece positioned by the fixture.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

Figure 2 is a schematic diagram of the structure of the transmission station of the present invention.

Figure 3 is a schematic diagram of the overall structure of the clamp of the present invention.

4 is a schematic diagram of the structure of the first positioning part of the present invention.

Figure 5 is the first schematic diagram of the installation structure of the micrometer knob of the present invention.

Figure 6 is the second schematic diagram of the installation structure of the micrometer knob of the present invention.

In the figure: 1. Conveyor platform; 2. Feed bin; 3. First transmission belt; 4. Second transmission belt; 5. Processing station; 6. Fixture; 602, first positioning part; 603, second positioning part; 61. Abutment; 62. Mounting table; 621. External threaded corner cylinder; 622. Mounting frame; 623. The first thousandth knob; 624. The second thousandth knob; 625. Positioning shaft; 626. Positioning head; 627, Pad; 628, guide groove; 629, guide seat; 63, positioning table; 631, limit slot; 632, limit block; 64, positioning card seat; 7, connecting shaft; 8, drive motor; 9, support .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

The present invention provides an assembly line-based tooling fixture as shown in Figs. 1-6, including a conveying station 1, a feeding bin 2 and a jig 6. The middle of the upper end surface of the conveying table 2 is provided with a processing station 5 and a conveying table 2. The upper end surface is also provided with a first transmission belt 3 and a second transmission belt 4, the first transmission belt 3 and the second transmission belt 4 are separately arranged on both sides of the processing station 5, and the clamps 6 are respectively installed on the first transmission belt 3 and the second transmission belt 4 The upper end surface of the clamp 6 includes a base 61, the front end of the base 61 is installed with a first positioning portion 602, the first positioning portion 602 includes a mounting frame 622, the middle of the mounting frame 622 is fixedly embedded with a mounting platform 62, The table 62 is embedded with a first thousand-minute knob 623, and the bottom of the mounting table 62 is embedded with a second thousand-minute knob 624. The first thousand-minute knob 623 and the second thousand-minute knob 624 are distributed up and down. Both the 623 and the second micrometer knob 624 are provided with two sets symmetrical to each other. The front ends of the first micrometer knob 623 and the second micrometer knob 624 are both provided with positioning heads 626, and the two positioning heads 626 are in contact with each other , The front end of the first positioning part 602 is equipped with a second positioning part 603, the second positioning part 603 includes a positioning table 63, the upper end of the positioning table 63 is installed with a positioning card seat 64, the positioning card seat 64 and the positioning table 63 are both provided with Two symmetrical to each other, a circular positioning slot is enclosed by the front end of the positioning holder 64 and the base 61. The clamp 6 in this embodiment mainly functions as two parts for positioning, a first positioning part 602 and a second positioning part 603. The second positioning part 603 is of a fixed structure and is matched with an adjustable base 61. Work to form a clamping and positioning groove with a circular cross section, which is suitable for the positioning of most parts; the first positioning part is mainly composed of a micrometer knob, which has four sets of centered installation , Even irregular workpieces can be positioned stably.

It also includes a driving motor 8. One end of the driving motor 8 is rotatably connected with a first drum, one end of the first drum is fixedly connected to the second drum through a connecting shaft 7, and the first transmission belt 3 is in transmission connection with the first drum. The second transmission belt 4 is in transmission connection with the second drum. This structure is the power structure of the transmission table 1. The two transmission belts are driven by the same group of motors to realize cooperative work and ensure that the workpieces positioned on the two transmission belts undergo the same processing procedures.

The mounting frame 622 has an L-shaped structure. The top of the mounting frame 622 is fixedly mounted with an externally threaded corner cylinder 621, and the bottom of the externally threaded corner cylinder 621 is fixedly connected to the mounting platform 62 through a positioning shaft 625. The mounting table 62 is fixed on the mounting frame 622 by an externally threaded corner cylinder 621, which makes the structure more compact, and uses the repetitive clamping force of the corner cylinder to make the positioning of the mounting table 62 and the micrometer knob on it more accurate, and also It is ensured that other structural components on the mounting frame 622 can also maintain a relatively stable installation environment.

The mounting table 62 is provided with a guide groove 628 on the outer wall on the side close to the mounting frame 622, and the mounting table 62 is provided with a guide seat 629 in front of the side close to the mounting frame 622. The guide seat 629 is inserted into the guide groove 628, and the guide seat 629 is connected to the The mounting frame 622 is fixedly connected, the bottom of the mounting frame 622 is fixedly installed with a pad 627, the bottom end of the pad 627 is provided with a limit slot 631, the bottom of the pad 627 is fixedly installed with a limit block 632, a limit block 632 and the base 61 is fixedly connected, and the limit block 632 is inserted into the limit slot 631. The setting of the guide seat 629 is to limit the mounting table 62 in the lateral direction, so as not to be affected by external force during the processing process. The setting of the pad 627 is to limit the mounting frame 622 in the longitudinal direction. It is affected by external force during the processing process, which causes dislocation.

As shown in Figure 4, the front end of the base 61 is provided with a semicircular bayonet, the bottom of the base 61 is provided with a sliding table, the sliding table and the base 61 are slidably connected, and the back of the base 61 is connected with a hydraulic push The bayonet of the rod and the base 61 is to form a circular positioning groove, and the circular structure has the largest area under the same circumference, so it can adapt to different specifications of workpieces while ensuring a compact structure. 61 is adjustable and can also be adjusted according to the actual workpiece.

As shown in Figure 1, the feed bin 2 is erected on the top of the outer edge of the conveyor 1, and two feed ports are opened at the bottom of the feed bin 2. The feed ports correspond to the fixtures, and the feed bin 2 is used for workpieces The workpiece falling from the feeding bin 2 will directly enter the positioning groove of the fixture for pre-positioning.

As shown in Figure 3, the angle between the first micrometer knob 623 and the second micrometer knob 624 is between 15-30. The micrometer knob 623 includes a positioning knob and a fine adjustment knob. The positioning knob is rotated and connected with a motor to position the The knob is driven and rotated by a motor to achieve rapid positioning, while the fine-tuning knob is for precise adjustment of special workpieces. This process can be adjusted manually.

A support 9 is fixedly installed at the bottom of the transfer platform 1, and the support 9 is symmetrically distributed at both ends of the transfer platform 1, and the support 9 includes two symmetrical legs. As shown in Figure 1, this structure helps to ease the transfer The vibration caused by the surface of the table ensures that the fixture can work better.

The working principle of the invention:

1, the workpieces dropped in the feed bin 2 directly enter the positioning grooves opened on the fixture 6. In practical applications, an induction probe can be set on the front end of the base 61. After sensing, the positioning and clamping are performed, mainly including: 2 steps.

The first step is to open the hydraulic push rod to push the base 61 toward the front end until it abuts the rear end of the workpiece, and the front end of the workpiece contacts the positioning holder 64, and since the front end of the base 61 is a semicircular bayonet , So in the process of pushing, the workpiece can always be kept in the middle position;

After the first step, the workpiece is pre-positioned. For a generally round workpiece, the first step can complete a better positioning and can be directly applied to processing.

If it is other parts, proceed to the second step of positioning, turn on the motor, rotate the positioning knob, and the positioning head 626 at the front end of the four micrometer knobs will move in the center, directly against the two sides of the workpiece. It is worth mentioning that because the micrometer The direct contact area of the positioning head 626 at the front end of the knob is small, which can be regarded as point-to-point contact, so that the force on the workpiece is more uniform and reasonable.

If it is the positioning of other workpieces with higher requirements, the micrometer knob can also be fine-tuned manually, that is, by rotating the fine-tuning knob to further deepen the positioning accuracy.

Finally, it should be noted that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it is still possible for those skilled in the art to The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. Any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present invention shall be included in the present invention Within the scope of protection.

Claims (10)

A tooling fixture based on an assembly line, which is characterized in that it includes a conveying table (1), a feeding bin (2) and a fixture (6); The middle of the upper end surface of the transfer table (2) is provided with a processing station (5), and the upper end surface of the transfer table (2) is additionally provided with a first transmission belt (3) and a second transmission belt (4). The first transmission belt ( 3) and the second transmission belt (4) are separately arranged on both sides of the processing station (5); The clamps (6) are respectively installed on the upper end surfaces of the first transmission belt (3) and the second transmission belt (4), and the clamps (6) include a base (61); A first positioning portion (602) is installed at the front end of the base (61), the first positioning portion (602) includes a mounting frame (622), and a mounting platform (62) is fixedly embedded in the middle of the mounting frame (622) ； A second positioning portion (603) is installed at the front end of the first positioning portion (602), and the second positioning portion (603) includes a positioning platform (63); A positioning clamp (64) is installed at the upper end of the positioning table (63), and the positioning clamp (64) and the positioning table (63) are both symmetrical to each other. The positioning clamp (64) and the base (61) ) Is surrounded by a circular positioning groove at the front end. An assembly line-based tooling fixture according to claim 1, characterized in that it further comprises a drive motor (8), one end of the drive motor (8) is rotatably connected to the first drum, and one end of the first drum passes through the connecting shaft (7) It is fixedly connected with the second drum, the first transmission belt (3) is in transmission connection with the first drum, and the second transmission belt (4) is in transmission connection with the second drum. An assembly line-based tooling fixture according to claim 2, characterized in that: the mounting table (62) is embedded with a first thousand-minute knob (623); A second thousand-minute knob (624) is embedded in the bottom of the installation table (62); The first micrometer knob (623) and the second micrometer knob (624) are distributed up and down, and the first micrometer knob (623) and the second micrometer knob (624) are both provided with two symmetrical groups; The front ends of the first micrometer knob (623) and the second micrometer knob (624) are both provided with positioning heads (626), and the two positioning heads (626) are in contact with each other. An assembly line-based tooling fixture according to claim 3, characterized in that: the mounting frame (622) has an L-shaped structure, the top of the mounting frame (622) is fixedly installed with an external threaded corner cylinder (621), and the external threaded corner The bottom of the cylinder (621) is fixedly connected with the mounting table (62) through a positioning shaft (625). An assembly line-based tooling fixture according to claim 4, characterized in that: a guide groove (628) is opened on the outer wall of the mounting platform (62) on the side close to the mounting frame (622), and the mounting platform (62) is close to A guide seat (629) is arranged in front of one side of the mounting frame (622), the guide seat (629) is inserted into the guide groove (628), and the guide seat (629) is fixedly connected with the mounting frame (622). An assembly line-based tooling fixture according to claim 5, characterized in that: the bottom of the mounting frame (622) is fixedly installed with a pad (627), and the bottom end of the pad (627) is provided with a limit slot (631) ); A limit block (632) is fixedly installed on the bottom of the cushion platform (627), the limit block (632) is fixedly connected with the base platform (61), and the limit block (632) is inserted into the limit slot (631). An assembly line-based tooling fixture according to claim 6, characterized in that: the front end of the base (61) is provided with a semicircular bayonet; A sliding table is provided at the bottom of the base (61), and the sliding table is slidably connected to the base (61); The back side of the abutment (61) is connected with a hydraulic push rod. An assembly line-based tooling fixture according to claim 7, characterized in that: the feed bin (2) is erected on the top of the outer edge of the conveying platform (1), and two feed bins (2) are provided at the bottom The feed port, the feed port and the fixture correspond to each other. An assembly line-based tooling fixture according to claim 8, characterized in that: the angle between the first millimeter knob (623) and the second millimeter knob (624) is between 15-30; The micrometer knob (623) includes a positioning knob and a fine adjustment knob, and a motor is connected to the positioning knob for rotation. An assembly line-based tooling fixture according to claim 9, characterized in that: the bottom of the transfer platform (1) is fixedly installed with a support (9), and the supports (9) are symmetrically distributed on the two sides of the transfer platform (1). And the support (9) includes two symmetrical legs.

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