A positioning device for punching automotive parts

Abstract

This utility model discloses a positioning device for punching automotive parts, relating to the field of parts stamping positioning. The device includes a positioning base plate, with symmetrically arranged grooves on both sides along its length. Each set of two grooves is symmetrically arranged along the width of the base plate, and the length direction of the grooves is parallel to the length direction of the base plate. This positioning device for punching automotive parts, by setting a bushing, gear, double rack, and electric push rod on the bottom surface of the positioning base plate, can synchronously adjust the spacing between the side positioning strips. Simultaneously, a longitudinal positioning structure is formed by a lifting strip, spline shaft, extrusion strip, and spring. The extrusion strip presses the material with the spring's rebound force, achieving a longitudinal pressing and positioning effect. This solves the problems of the non-adjustable spacing between the side positioning strips and the lack of longitudinal positioning in the prior art, ensuring punching accuracy.

Description

Technical Field

[0001] This utility model relates to the field of part stamping positioning, and in particular to a positioning device for punching holes in automotive parts. Background Technology

[0002] In the process of punching automotive parts, a positioning device is required to ensure the accuracy of the material to be punched. Existing positioning devices mostly achieve width positioning through two spaced side positioning strips.

[0003] However, the side positioning strips are often fixed to the positioning substrate. When faced with the width changes of different batches of materials, it is difficult to conveniently and synchronously adjust the spacing between the two sides, resulting in insufficient adaptability. Moreover, focusing only on width positioning and lacking a longitudinal positioning structure, it is impossible to ensure stable adhesion to the substrate during material transportation and stamping, which can easily cause deviation and affect the punching accuracy. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a positioning device for punching automotive parts, which solves the problems of the inability to adjust the spacing of the side positioning strips and the lack of a longitudinal positioning structure in existing technologies.

[0005] To address the problems in the existing technology, the technical solution of this utility model is as follows: A positioning device for punching automotive parts includes a positioning base plate. Two symmetrically slidable side positioning strips are provided on the top surface of the positioning base plate along its length. The positioning base plate is provided with a width adjustment mechanism that drives the two side positioning strips to open and close synchronously. A longitudinal positioning mechanism is provided above the positioning base plate. The longitudinal positioning mechanism includes a liftable and adjustable support component and an elastic pressing component that slides with the support component. The elastic pressing component presses the material to be punched onto the top surface of the positioning base plate by elastic force, thereby realizing longitudinal positioning of the material to be punched during the feeding and punching process.

[0006] Optionally, the positioning substrate has symmetrical grooves on both sides along its length, with the grooves parallel to the length of the positioning substrate. Slider blocks are fixed at both ends of the bottom surface of the side positioning strip. The sliders are inverted T-shaped, with their longitudinal parts inserted into the grooves and their transverse parts attached to the bottom surface of the positioning substrate, thus limiting the side positioning strip to the top surface of the positioning substrate.

[0007] Optionally, the width adjustment mechanism includes a gear rotatably connected to the positioning base plate, and two racks meshing with the gear. The two racks are symmetrically arranged with the gear as the center, and the ends opposite to the gear pass through the through slots on the positioning base plate and are fixed to the corresponding side positioning strips. It also includes an electric push rod fixed on the positioning base plate, the protruding end of which is connected to one of the racks. A bushing is fixed at the axis of the gear, and the bushing is rotatably mounted in the middle of the bottom surface of the positioning base plate through a bearing.

[0008] Optionally, the support assembly includes lifting bars symmetrically arranged along the width direction of the positioning base plate, and an adjusting member for driving the lifting bars to move up and down. The positioning base plate is provided with a sliding sleeve in the circumferential direction, and the lifting bars are provided with sliding parts adapted to the sliding sleeve at both ends. The sliding parts are slidably inserted into the sliding sleeve. The adjusting member is connected to the lifting bars, and the lifting bars are driven to move up and down along the sliding sleeve by the operation of the adjusting member, so as to realize the height adjustment of the support assembly.

[0009] Optionally, the elastic clamping assembly includes a spline shaft, a pressing strip, and a spring. The spline shaft is slidably mounted on the lifting strip through a spline hole. The pressing strip is fixed to the bottom of the spline shaft, and its length direction is parallel to the length direction of the positioning base plate. The bottom of the pressing strip forms an inclined surface corresponding to the long side of the positioning base plate. The spring is sleeved on the spline shaft, and its two ends are respectively connected to the spline shaft and the lifting strip.

[0010] Optionally, the adjusting component is a screw and a knob. A connecting plate is fixed to the bottom of the four sliding parts. The screw is threaded to the connecting plate through a threaded hole. The knob is fixed to the end of the screw away from the positioning base plate. The end of the screw close to the positioning base plate passes through the bushing and is rotatably connected to the bottom surface of the positioning base plate through a bearing.

[0011] Compared with the prior art, the advantages of this utility model are as follows: This invention, by setting a bushing, gear, double rack and electric push rod on the bottom surface of the positioning base plate, can synchronously adjust the spacing of the side positioning strips. At the same time, a longitudinal positioning structure is formed by a lifting strip, spline shaft, extrusion strip and spring. The extrusion strip presses the material with the spring rebound force, achieving the effect of longitudinal pressing and positioning. This solves the problems of the non-adjustable spacing of the side positioning strips and the lack of longitudinal positioning in the prior art, and ensures the punching accuracy.

[0012] This invention features a screw that is rotatably connected to the positioning base plate in the middle of the connecting plate. Rotating the screw can drive the connecting plate and the lifting bar to rise and fall, thereby adjusting the tension of the spring on the spline shaft. This compensates for the decline in elastic potential energy of the spring after long-term use, ensuring that the extrusion bar always maintains sufficient pressure to press the material and maintains longitudinal positioning stability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the punching position of this utility model.

[0015] Figure 3 This is a schematic diagram of the spline shaft structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the gear and rack relationship of this utility model.

[0017] Figure 5This is a schematic diagram showing the relationship between the rack and the side positioning strip of this utility model.

[0018] Figure 6 This is a schematic diagram of the bushing structure of this utility model.

[0019] Figure 7 This is a schematic diagram of the X-shaped connecting plate structure of this utility model.

[0020] Reference numerals: 1. Positioning base plate; 2. Slide groove; 3. Side positioning strip; 4. Punch hole; 5. Slider; 6. Bushing; 7. Gear; 8. Rack; 9. Electric push rod; 10. Lifting bar; 1001. Sliding part; 11. Sliding sleeve; 12. Connecting plate; 13. Screw; 14. Knob; 15. Splined shaft; 16. Extrusion strip; 17. Spring; 18. Through groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figures 1 to 7 This embodiment provides a positioning device for punching automotive parts, including a positioning base plate 1. A set of sliding grooves 2 are provided on both sides of the positioning base plate 1 in the length direction. The two sliding grooves 2 in each set are symmetrically arranged in the width direction of the positioning base plate 1, and the length direction of the sliding grooves 2 is parallel to the length direction of the base plate.

[0023] On the top surface of the positioning substrate 1, two side positioning strips 3 are symmetrically arranged along its length direction. The length direction of the side positioning strips 3 is parallel to the width direction of the positioning substrate 1. The material to be punched is placed between the two side positioning strips 3 and passes through the middle of the top surface of the positioning substrate 1. The side positioning strips 3 are used to position the material to be punched in the width direction. In the middle of the positioning substrate 1, two punch holes 4 are symmetrically opened along its length direction. After the material to be punched is positioned, it covers the two punch holes 4. The punching device moves down and punches a hole in the position of the material to be punched directly opposite the punch hole 4, thus completing the punching 4 work.

[0024] The width of the materials to be punched varies from batch to batch, so the spacing of the side positioning strips 3 needs to be adjusted accordingly. Slider 5 is fixed at both ends of the bottom surface of the side positioning strips 3. The slider 5 is in the shape of an inverted T. The vertical part of the slider 5 is inserted into the groove 2, and the horizontal part of the slider 5 is across the bottom surface of the positioning base plate 1, which limits the sliding of the side positioning strips 3 on the positioning base plate 1. In this way, the two side positioning strips 3 can open and close and slide.

[0025] To achieve the opening and closing movement of the two side positioning strips 3, a bushing 6 is rotatably connected to the center of the bottom surface of the positioning base plate 1 via a bearing. A gear 7 is fixed to the outer wall of the bushing 6. Two racks 8 are arranged symmetrically around the outer periphery of the gear 7. Both racks 8 are meshed with the gear 7. The end of the rack 8 facing away from the gear 7 passes through the through groove 18 opened on the positioning base plate 1 and is fixed to the bottom surface of the corresponding side positioning strip 3. In this way, while adjusting the position of one side positioning strip 3, the position of the opposite side positioning strip 3 can be adjusted simultaneously. The two side positioning strips 3 open and close synchronously. An electric push rod 9 is fixed to the bottom surface of the positioning base plate 1. The extended end of the electric push rod 9 is fixed to the outer wall of one of the racks 8. By controlling the extension or retraction of the extended end of the electric push rod 9, the distance between the two side positioning strips 3 can be adjusted, so that the entire positioning device can be adaptively adjusted.

[0026] Furthermore, to ensure positioning accuracy, in addition to positioning the material to be punched in the width direction, it also needs to be positioned in the longitudinal direction to ensure that it remains stably attached to the surface of the positioning base plate 1 during conveying and punching. Above the positioning base plate 1, two lifting bars 10 are symmetrically arranged along its width direction. Both ends of the lifting bars 10 are bent downwards at a vertical 90° angle to form sliding portions 1001. Sliding sleeves 11 are fixed on the circumferential sidewall of the positioning base plate 1 at positions opposite to the sliding portions 1001. 01 is slidably inserted into the sliding sleeve 11. The bottom of the four sliding parts 1001 is fixed with an X-shaped connecting plate 12. The middle part of the connecting plate 12 is threadedly connected to a screw 13 through a threaded hole. The screw 13 is collinear with the axis of the bushing 6, and the upper end of the screw 13 is inside the bushing 6. The top of the screw 13 is rotatably connected to the bottom surface of the positioning base plate 1 through a bearing. The bottom of the screw 13 is fixed with a knob 14. By rotating the knob 14, the screw 13 can be rotated, which can drive the connecting plate 12 and the two lifting bars 10 to rise and fall.

[0027] A spline shaft 15 is slidably connected to the middle of the lifting bar 10 through a spline hole. The spline shaft 15 is perpendicular to the top surface of the positioning base plate 1, and an extrusion bar 16 is fixed at its bottom. The length direction of the extrusion bar 16 is parallel to the length direction of the positioning base plate 1, and the bottom of the extrusion bar 16 forms an inclined surface corresponding to the long side of one side of the base plate. The inclined surfaces of the two extrusion bars 16 are directly opposite the long side of the same side of the base plate. In this way, the material to be punched is fed into the space between the two side positioning bars 3 by the feeding device and is conveyed against the top surface of the positioning base plate 1. After contacting the inclined surface, it can push the extrusion bar 16, causing the extrusion bar 16 to slide upward. A spring 17 is sleeved on the upper end of the spline shaft 15. One end of the spring 17 is fixed to the outer wall of the spline shaft 15, and the other end is fixed to the bottom surface of the lifting bar 10. The extrusion bar 16 slides upward and stretches the spring 17. Finally, the material to be punched passes through the space between the extrusion bar 16 and the positioning base plate 1, and the spring 17's rebound force causes the extrusion bar 16 to press the material to be punched against the top surface of the positioning base plate 1.

[0028] The screw 13 can compensate for the attenuation of the elastic potential energy of the spring 17 after long-term use. By rotating the screw 13, the height of the lifting bar 10 can be adjusted, thereby adjusting the rebound force of the spring 17, ensuring that the pressing bar 16 can always have sufficient pressure to press against the surface of the positioning base plate 1.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for punching automotive parts, comprising a positioning base plate (1), characterized in that, The top surface of the positioning base plate (1) is symmetrically provided with two side positioning strips (3) that can be opened and closed and slid along its length direction. The positioning base plate (1) is provided with a width adjustment mechanism that drives the two side positioning strips (3) to open and close synchronously. The positioning base plate (1) is provided with a longitudinal positioning mechanism. The longitudinal positioning mechanism includes a support component that can be raised and lowered and an elastic pressing component that slides with the support component. The elastic pressing component presses the material to be punched onto the top surface of the positioning base plate (1) with elastic force to realize longitudinal positioning of the material to be punched during the conveying and punching process.

2. The positioning device for punching automotive parts according to claim 1, characterized in that, The positioning base plate (1) has symmetrical grooves (2) on both sides along its length. The length of the grooves (2) is parallel to the length of the positioning base plate (1). The bottom surfaces of the side positioning strips (3) are fixed with sliders (5). The sliders (5) are inverted T-shaped. Their longitudinal part is inserted into the grooves (2), and their transverse part is attached to the bottom surface of the positioning base plate (1), thus limiting the side positioning strips (3) to the top surface of the positioning base plate (1).

3. The positioning device for punching automotive parts according to claim 2, characterized in that, The width adjustment mechanism includes a gear (7) rotatably connected to the positioning base plate (1), and two racks (8) meshing with the gear (7). The two racks (8) are arranged symmetrically with the gear (7) as the center, and the ends away from the gear (7) pass through the through slots (18) on the positioning base plate (1) and are fixed to the corresponding side positioning strips (3). It also includes an electric push rod (9) fixed on the positioning base plate (1), the extended end of which is connected to one of the racks (8).

4. The positioning device for punching automotive parts according to claim 3, characterized in that, A bushing (6) is fixed at the axis of the gear (7), and the bushing (6) is rotatably mounted in the middle of the bottom surface of the positioning base plate (1) via a bearing.

5. The positioning device for punching automotive parts according to claim 4, characterized in that, The support assembly includes lifting bars (10) symmetrically arranged along the width direction of the positioning base plate (1), and an adjusting member for driving the lifting bars (10) to rise and fall. The positioning base plate (1) is provided with a sliding sleeve (11) in the circumferential direction. The lifting bars (10) are provided with sliding parts (1001) at both ends that are adapted to the sliding sleeve (11). The sliding parts (1001) are slidably inserted into the sliding sleeve (11). The adjusting member is connected to the lifting bars (10). The operation of the adjusting member drives the lifting bars (10) to move up and down along the sliding sleeve (11) to realize the height adjustment of the support assembly.

6. The positioning device for punching automotive parts according to claim 5, characterized in that, The elastic clamping assembly includes a spline shaft (15), a pressing bar (16), and a spring (17). The spline shaft (15) is slidably mounted on the lifting bar (10) through a spline hole. The pressing bar (16) is fixed to the bottom of the spline shaft (15), and its length direction is parallel to the length direction of the positioning base plate (1). The bottom of the pressing bar forms an inclined surface corresponding to the long side of the positioning base plate (1). The spring (17) is sleeved on the spline shaft (15), and its two ends are connected to the spline shaft (15) and the lifting bar (10) respectively.

7. The positioning device for punching automotive parts according to claim 6, characterized in that, The adjusting components are a screw (13) and a knob (14). The bottom of the four sliding parts (1001) is fixed with a connecting plate (12). The screw (13) is threadedly connected to the connecting plate (12) through a threaded hole. The knob (14) is fixed to the end of the screw (13) away from the positioning base plate (1). The end of the screw (13) close to the positioning base plate (1) passes through the bushing (6) and is rotatably connected to the bottom surface of the positioning base plate (1) through a bearing.

Images