A material cart positioning mechanism

Abstract

This utility model discloses a material cart positioning mechanism, including a positioning frame, a side guide strip, a buffer block assembly, and a telescopic stop mechanism; the telescopic stop mechanism is compressed by the material cart and is used to block the back of the material cart and limit its position, and the telescopic stop mechanism is connected to a foot pedal; the thickness of the buffer block assembly formed by the inner wall of the front baffle of the positioning frame and the back of the material cart is greater than the thickness of the buffer block assembly formed by the inner wall of the front baffle of the positioning frame and the front of the material cart.

Description

Technical Field

[0001] This utility model relates to a material cart positioning mechanism. Background Technology

[0002] Existing processing systems typically use different sensors to identify whether the material cart is in position and whether it is equipped with a material frame. The material cart generally consists of a seat plate and bottom rollers. However, current positioning tables have the following drawbacks:

[0003] 1. The trolley lacks a propulsion direction error prevention mechanism;

[0004] 2: The positioning of the trolley is not accurate enough to meet the gripping requirements of the robotic arm;

[0005] 3: After the trolley is positioned, the wheels will still wobble and rub against the bottom surface, which can easily cause wheel wear and affect the subsequent positioning height;

[0006] 4: Pushing the trolley onto the positioning mechanism is laborious and time-consuming. Utility Model Content

[0007] In view of the problems existing in the prior art, this utility model provides a material cart positioning mechanism, which aims to solve the existing material cart positioning problem.

[0008] To achieve the above objectives, the technical solution of this utility model is as follows: a material cart positioning mechanism, including a positioning frame, a side guide strip, a buffer block assembly, and a telescopic stop mechanism; the telescopic stop mechanism is compressed by the material cart and is used to block the back of the material cart and limit its position, and the telescopic stop mechanism is connected to a foot pedal; the thickness of the buffer block assembly formed by the inner wall of the front baffle of the positioning frame and the back of the material cart is greater than the thickness of the buffer block assembly formed by the inner wall of the front baffle of the positioning frame and the front of the material cart.

[0009] Preferably, the buffer block assembly consists of a thin buffer block and a thick buffer block on the inner wall of the front baffle of the positioning frame, and a supplementary block at the same position on the front and back of the material cart; the supplementary block on the front of the material cart is in contact with the thin buffer block.

[0010] Preferably, the telescopic stop mechanism consists of a base, an inclined block, a tension spring, and a torsion spring. The torsion spring is fixed to the base by a positioning pin, and the tension spring supports the inclined block to the base by a tension spring support. An extended inclined plate is provided at the bottom of the inclined block, resting on the force-bearing part of the torsion spring, and a foot pedal is connected to the front of the inclined block. The inclined block is pulled by a circular tension spring to prevent the material cart from getting stuck when entering the frame.

[0011] Preferably, it also includes a lifting and guiding mechanism; the lifting and guiding mechanism is used to support the lifting material cart.

[0012] Preferably, the lifting guide mechanism consists of a U-shaped seat and several guide rollers installed on both sides of the U-shaped seat; the several guide rollers at the front of the U-shaped seat are arranged at an angle to the side wall.

[0013] Preferably, the telescopic stop mechanism is installed at the front of the U-shaped seat of the lifting guide mechanism.

[0014] Preferably, the positioning frame is equipped with a photoelectric sensing device for detecting the material frame.

[0015] Preferably, the front of the material cart or the inner wall of the front baffle of the positioning frame is respectively equipped with a mutually cooperating proximity switch assembly.

[0016] Preferably, the front end of the positioning frame base plate is provided with a guide ramp.

[0017] Preferably, the guide roller is a camshaft. The cam bearing lifts the material cart and slides forward, which is beneficial for pushing the cart.

[0018] The beneficial effects of this utility model are: the positioning method is more accurate; the slope of the base plate makes loading and unloading the material cart more convenient; the material cart is raised to avoid wear on the cart wheels, which would affect the positioning height; anti-reverse measures are added to more directly determine whether the material cart is reversing; and work efficiency is improved and production time is shortened. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the telescopic stop mechanism of this utility model.

[0021] Figure 3 This is a schematic diagram of the lifting guide mechanism of this utility model.

[0022] Figure 4 This is a schematic diagram of the material cart structure.

[0023] Figure 5 This is a diagram illustrating the effect of using this utility model. Detailed Implementation

[0024] like Figure 1-5 As shown, a material cart positioning mechanism includes a positioning frame 1, a side guide strip 2, a buffer block assembly, and a telescopic stop mechanism 4; the telescopic stop mechanism 4 is compressed by the material cart and is used to block the back of the material cart and limit its position, and the telescopic stop mechanism 4 is connected to a foot pedal 41; the thickness of the buffer block assembly formed by the inner wall of the front baffle of the positioning frame 1 and the back of the material cart is greater than the thickness of the buffer block assembly formed by the inner wall of the front baffle of the positioning frame 1 and the front of the material cart.

[0025] The buffer block assembly consists of a thin buffer block 31 and a thick buffer block 32 on the inner wall of the front baffle of the positioning frame 1, and a supplementary block 33 at the same position on the front and back of the material cart; the supplementary block 33 on the front of the material cart contacts and cooperates with the thin buffer block 31.

[0026] Preferably, it also includes a lifting guide mechanism 5; the lifting guide mechanism 5 is composed of a U-shaped seat 51 and a plurality of guide rollers 52 installed on both sides of the U-shaped seat 51; the plurality of guide rollers 52 at the front of the U-shaped seat 51 are arranged at an angle to the side wall.

[0027] The telescopic stop mechanism 4 is installed at the front of the U-shaped seat of the lifting guide mechanism 5; in this way, the telescopic stop mechanism 4 can still be pressed down while the material cart is being lifted; the telescopic stop mechanism 4 is composed of a base 42, an inclined block 43, a tension spring 44, and a torsion spring 45. The torsion spring 45 adopts double torsion spring contact support for greater stability; the torsion spring 45 is fixed to the base 42 by a positioning pin, and the tension spring 44 fixes the inclined block 43 to the base 42 by a tension spring support. The bottom of the inclined block 43 is provided with an extended inclined plate that rests on the force-bearing part of the torsion spring 45, and the front of the inclined block 43 is connected to a foot pedal 41.

[0028] The positioning frame 1 of this utility model has a guide ramp at the front end of its base plate, and the side guide strip 2 has a guiding and positioning function for left and right, guiding the operator to push the material cart correctly. The material cart will first press down the pedal (the pedal is integrated with the inclined block 43 and its extended inclined plate), so the inclined block 43 moves down, the tension spring 44 is compressed, and the torsion spring 45 is twisted and compressed; then the material cart contacts the guide roller 52 and slides upward, stopping when it hits the buffer block 3; after fully entering, the double torsion springs give the inclined block 43 the corresponding force, at which time the inclined block 43 is lifted by the spring, and the back of the inclined block 43 presses against the material cart, restricting the position of the material cart and achieving precise positioning. When it is necessary to change to the opposite direction or exit, step on the pedal 41 to push the material cart down.

[0029] The buffer block has a buffering effect and also has a mistake prevention function (the thickness of buffer block 1 is 25mm, the thickness of buffer block 2 is 15mm, and the supplementary block 33 on the front of the material cart cooperates with the thinner one. If the operator places it in reverse, the supplementary block 33 on the back of the material cart will contact the thicker one, and it will not be able to push forward. The telescopic stop mechanism 4 will not be able to pop up and will not play a fixing role. Only when the trolley is placed correctly can it be pushed into place and positioned, and the reverse of the material cart can be directly judged.

[0030] In addition, a photoelectric sensor 6 for detecting the material frame is installed on the side of the positioning frame 1. Proximity switch assemblies 7 are installed on the inner wall of the front baffle of the positioning frame 1, enabling automatic alarm operation. The traditional sensing principle is used, and will not be elaborated further here.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A car positioning mechanism, characterized by, It includes a positioning frame (1), a side guide strip (2), a buffer block assembly, and a telescopic stop mechanism (4); the telescopic stop mechanism (4) is compressed by the material cart and is used to block the back of the material cart and limit its position, and the telescopic stop mechanism (4) is connected to a foot pedal (41); the thickness of the buffer block assembly formed by the inner wall of the front baffle of the positioning frame (1) and the back of the material cart is greater than the thickness of the buffer block assembly formed by the inner wall of the front baffle of the positioning frame (1) and the front of the material cart.

2. A dolly positioning mechanism according to claim 1, wherein The buffer block assembly consists of a thin buffer block (31) and a thick buffer block (32) on the inner wall of the front baffle of the positioning frame (1), and a supplementary block (33) at the same position on the front and back of the material cart; the supplementary block (33) on the front of the material cart is in contact with the thin buffer block (31).

3. The buggy positioning mechanism of claim 1 wherein, The telescopic stop mechanism (4) consists of a base (42), an inclined block (43), a tension spring (44), and a torsion spring (45). The torsion spring (45) is fixed to the base (42) by a positioning pin (46). The tension spring (44) supports the inclined block (43) to the base (42) by a tension spring support (47). The bottom of the inclined block (43) is provided with an extended inclined plate that rests on the force-bearing part of the torsion spring (45), and the front of the inclined block (43) is connected to a foot pedal (41).

4. The buggy positioning mechanism of claim 1 wherein, It also includes a lifting guide mechanism (5); the lifting guide mechanism (5) is used to support the lifting material cart.

5. The buggy positioning mechanism of claim 4 wherein, The lifting guide mechanism (5) consists of a U-shaped seat (51) and several guide rollers (52) installed on both sides of the U-shaped seat (51); the several guide rollers (52) at the front of the U-shaped seat (51) are arranged at an angle to the side wall.

6. A dolly positioning mechanism according to claim 5, wherein, The telescopic stop mechanism (4) is installed at the front of the U-shaped seat of the lifting guide mechanism (5).

7. The buggy positioning mechanism of claim 1 wherein, The positioning frame (1) is equipped with a photoelectric sensing device (6) for detecting the material frame.

8. The buggy positioning mechanism of claim 1 wherein, The material cart or the inner wall of the front baffle of the positioning frame (1) is equipped with a proximity switch assembly (7) that cooperates with each other.

9. The buggy positioning mechanism of claim 1 wherein, The positioning frame (1) has a guide ramp at the front end of its base plate.

10. The buggy positioning mechanism of claim 5 wherein, The guide roller (52) is a camshaft.

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