Self-returning guide mechanism

Abstract

The utility model relates to a self-material-returning guide mechanism which comprises a bottom plate and a guide pin installed on the bottom plate, an elastic reset piece and a sleeve are arranged on the guide pin in a sleeved mode, the elastic reset piece is located between the sleeve and the bottom plate, a limiting groove is formed in the guide pin, the limiting groove extends in the height direction of the guide pin, and the elastic reset piece is located in the limiting groove. A corresponding containing hole is formed in the side wall of the sleeve, and a limiting pin is inserted into the limiting groove and the containing hole. The guide pin is provided with the sleeve and the elastic reset piece, and after a part is stamped, the elastic reset piece drives the sleeve to move upwards, so that the part is pushed out of the guide pin, and the self-returning function is completed; through cooperation of the limiting pin and the limiting groove, displacement of the sleeve is controlled, the material returning function can be guaranteed, the sleeve can be prevented from being disengaged, repeated material returning is achieved, the production efficiency is improved, the overall structure is compact, the installation space is saved, and the use requirements of different parts and die spaces are met.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a self-retracting material guiding mechanism. Background Art

[0002] At present, all automobile body parts molds have first-order blanking dies. With the development of automation, most blanking dies are progressive blanking dies. Progressive blanking dies need to have guide pins. When the mold space is large, two ejector pins are generally installed next to the existing guide pins to realize part removal. For some small parts and small mold space, only guide pins can be installed without space for ejector pins. Therefore, during the mold stamping process, there is no ejector pin for material removal, and material jams often occur, wasting time and affecting production efficiency. Utility Model Content

[0003] In order to solve one or more of the above technical problems, the utility model provides a self-retracting and guiding mechanism with a compact structure.

[0004] The utility model solves the above-mentioned technical problems through the following technical solutions: a self-returning material guiding mechanism, comprising a base plate and a guiding pin mounted on the base plate, the guiding pin being sleeved with an elastic reset member and a sleeve, the elastic reset member being located between the sleeve and the base plate, the guiding pin being provided with a limiting groove, the limiting groove extending along the height direction of the guiding pin, the side wall of the sleeve being provided with a corresponding accommodating hole, the limiting pin being inserted into the limiting groove and the accommodating hole.

[0005] On the basis of the above technical solution, the present invention can also make the following improvements to the above technical solution:

[0006] Preferably, it also includes a support plate, the guide pin is installed on the support plate, the support plate is provided with a through hole, the through hole is provided with a third fastener for mounting the support plate on the base plate, and the diameter of the through hole is larger than the screw diameter of the third fastener and smaller than the head diameter of the third fastener.

[0007] Preferably, a washer is sleeved on the third fastener, and the washer is located above the support plate.

[0008] Preferably, it also includes a positioning block installed on the base plate, the positioning block is L-shaped, and the positioning block includes a first support block and a second support block connected, the first support block and the second support block form a space for accommodating the support plate, a first adjusting screw is installed on the first support block, and the end of the first adjusting screw is abutted against the side wall of the support plate, and a second adjusting screw is installed on the second support block, and the end of the second adjusting screw is abutted against the other side wall of the support plate.

[0009] Preferably, the positioning block is provided with a first pin hole, the bottom plate is provided with a corresponding second pin hole, and the first positioning pins are inserted into the first pin hole and the second pin hole.

[0010] Preferably, the base plate is mounted on the mold via a first fastener and a second locating pin.

[0011] Preferably, there are two or more third fasteners.

[0012] Preferably, the elastic return member is a return spring.

[0013] The beneficial effects of the utility model are as follows: by arranging a sleeve and an elastic reset part on the guide pin, after the part is stamped, the elastic reset part drives the sleeve to move upward, thereby pushing the part out of the guide pin and completing the self-returning function; by cooperating with the limit pin and the limit groove, the displacement of the sleeve is controlled, which can not only ensure the return function, but also prevent the sleeve from falling out, realize multiple return, improve production efficiency, and have a compact overall structure, save installation space, and meet the use requirements of different parts and mold spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the self-retracting and guiding mechanism of the utility model;

[0015] Figure 2 This is a schematic diagram of the present invention when the sleeve is removed.

[0016] The accompanying drawings are marked as follows: 1. first fastener; 2. second fastener; 3. positioning block; 4. sleeve; 5. elastic return member; 6. limit pin; 7. guide pin; 8. base plate; 9. first positioning pin; 10. second positioning pin; 11. third fastener; 12. support plate; 13. first adjusting screw; 14. second adjusting screw; 15. limit groove. DETAILED DESCRIPTION

[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0018] like Figure 1 and Figure 2As shown, the utility model discloses a self-retracting guide mechanism, including a base plate 8 and a guide pin 7 installed on the base plate 8. The base plate 8 is installed on the mold through a first fastener 1 and a second positioning pin 10. The first fastener 1 is a screw or a bolt. A first fastener 1 is provided at each of the four corners of the base plate 8 to ensure the stability of the installation of the base plate 8; two second positioning pins 10 are provided to ensure the accuracy of the positioning of the base plate 8 and reduce the difficulty of installation; the upper end of the guide pin 7 is hemispherical, which ensures that the guide pin 7 is smoothly inserted into the part to avoid jamming and improve the stability of the mold. In order to ensure smooth installation, an elastic reset member 5 and a sleeve 4 are sleeved on the guide pin 7, the elastic reset member 5 is located below the sleeve 4, and the elastic reset member 5 is located between the sleeve 4 and the base plate 8. In this embodiment, the elastic reset member 5 is a reset spring, and a limiting groove 15 is provided on the guide pin 7. The limiting groove 15 extends along the height direction of the guide pin 7, and the limiting groove 15 is elliptical. A corresponding accommodating hole is provided on the side wall of the sleeve 4, and the accommodating hole is a circular through hole. A limiting pin 6 is inserted into the limiting groove 15 and the accommodating hole, and the limiting pin 6 is limited by the circular through hole.

[0019] When in use, the part passes through the guide pin 7 and is placed on the sleeve 4. The sleeve 4 drives the limit pin 6 to move downward along the limit groove 15, compressing the elastic reset member 5 to deform, thereby positioning the part. After the part is stamped, the sleeve 4, the limit pin 6 and the part are driven upward by the restoring force of the elastic reset member 5, thereby realizing automatic material return. The structure is compact and the operation is simple.

[0020] The self-retracting and guiding mechanism also includes a support plate 12, on which the guiding pin 7 is mounted, and a through hole is provided on the support plate 12, on which a third fastener 11 for mounting the support plate 12 on the bottom plate 8 is provided, and the diameter of the through hole is larger than the screw diameter of the third fastener 11 and smaller than the head diameter of the third fastener 11, and the third fastener 11 passes through the support plate 12 and is threadedly connected to the bottom plate 8. Since the size of the through hole on the support plate 12 is larger than the size of the third fastener 11, the position of the support plate 12 on the bottom plate 8 can be appropriately adjusted, thereby adjusting the position of the guiding pin 7, reducing the difficulty of installation and matching, ensuring that the guiding pin 7 is smoothly inserted into the part, and realizing accurate positioning of the part.

[0021] In this embodiment, specifically, a washer is sleeved on the third fastener 11, and the washer is located above the support plate 12. The third fastener 11 is a screw or a bolt, and the washer is an elastic washer or a flat washer, which ensures the firmness of the connection between the third fastener 11 and the bottom plate 8.

[0022] Specifically, there are two or more third fasteners 11. In this embodiment, there are two third fasteners 11 to ensure the firmness of the support plate 12 installation.

[0023] The self-retracting guide mechanism also includes a positioning block 3 installed on the bottom plate 8. The positioning block 3 is installed on the bottom plate 8 through the second fastener 2. The positioning block 3 is L-shaped. The positioning block 3 includes a first support block and a second support block connected. The first support block and the second support block form a space for accommodating the support plate 12. The first support block is installed with a first adjusting screw 13, and the end of the first adjusting screw 13 is against the side wall of the support plate 12. The second support block is installed with a second adjusting screw 14, and the end of the second adjusting screw 14 is against the other side wall of the support plate 12. By adjusting the screw-in amount of the first adjusting screw 13 and the second adjusting screw 14, the position of the support plate 12 is adjusted to ensure the adjustment accuracy of the position of the support plate 12 and reduce the shaking of the support plate 12. Then, the support plate 12 is fixed to the bottom plate 8 through the third fastener 11, so that the guide pin 7 is smoothly inserted into the positioning hole of the part, and the part is positioned.

[0024] In this embodiment, specifically, a pin hole 1 is provided on the positioning block 3, and a corresponding pin hole 2 is provided on the bottom plate 8, and first positioning pins 9 are inserted into the pin holes 1 and 2. The positioning block 3 is accurately positioned by the first positioning pin 9, which reduces the difficulty of installation. In this embodiment, two first positioning pins 9 are provided, one of which is arranged on the first support block, and the other first positioning pin 9 is arranged on the second support block, which further improves the accuracy of positioning the positioning block 3.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-retracting and guiding mechanism, characterized in that: The invention comprises a base plate (8) and a guide pin (7) mounted on the base plate (8); an elastic reset member (5) and a sleeve (4) are sleeved on the guide pin (7); the elastic reset member (5) is located between the sleeve (4) and the base plate (8); a limit groove (15) is provided on the guide pin (7); the limit groove (15) extends along the height direction of the guide pin (7); a corresponding accommodating hole is provided on the side wall of the sleeve (4); and the limit pin (6) is inserted into the limit groove (15) and the accommodating hole.

2. The self-retracting and guiding mechanism according to claim 1, characterized in that: It also includes a support plate (12), the guide pin (7) is mounted on the support plate (12), the support plate (12) is provided with a through hole, the through hole is provided with a third fastener (11) for mounting the support plate (12) on the base plate (8), and the diameter of the through hole is larger than the screw diameter of the third fastener (11) and smaller than the head diameter of the third fastener (11).

3. The self-retracting and guiding mechanism according to claim 2, characterized in that: A washer is sleeved on the third fastener (11), and the washer is located above the support plate (12).

4. The self-retracting and guiding mechanism according to claim 2 or 3, characterized in that: The invention also comprises a positioning block (3) mounted on the base plate (8), the positioning block (3) being L-shaped, the positioning block (3) comprising a first supporting block and a second supporting block connected to each other, the first supporting block and the second supporting block forming a space for accommodating the support plate (12), a first adjusting screw (13) being mounted on the first supporting block, the end of the first adjusting screw (13) being against a side wall of the support plate (12), and a second adjusting screw (14) being mounted on the second supporting block, the end of the second adjusting screw (14) being against another side wall of the support plate (12).

5. The self-retracting and guiding mechanism according to claim 4, characterized in that: The positioning block (3) is provided with a first pin hole, and the bottom plate (8) is provided with a corresponding second pin hole. A first positioning pin (9) is inserted into the first pin hole and the second pin hole.

6. The self-retracting and guiding mechanism according to claim 1, characterized in that: The base plate (8) is mounted on the mold via a first fastener (1) and a second positioning pin (10).

7. The self-retracting and guiding mechanism according to claim 2 or 3, characterized in that: The third fasteners (11) are provided in two or more numbers.

8. The self-retracting and guiding mechanism according to claim 1, characterized in that: The elastic reset element (5) is a reset spring.

Images