A special trimming device for the safety belt core shaft cover of an automobile

Abstract

The utility model relates to the technical field of safety belt mandrel production, and disclose a kind of special edge cutting device of automobile safety belt mandrel shell, including base, the top of base is provided with shearing assembly and polishing assembly, the shearing assembly includes two first bearing plate, the upper surface of each first bearing plate is slidably connected with lower bearing seat. The special edge cutting device of automobile safety belt mandrel shell, when shearing, hydraulic rod drives upper die plate and lower die plate to be close, cutting tool cuts off runner waste, then upper die plate and lower die plate drive clamping plate and mandrel body separate, upper bearing seat, lower bearing seat inner wall turntable drives fixed cylinder to clamp the both ends of mandrel body, driving motor drives mandrel to rotate, first adjusting motor and second adjusting motor respectively drive first bearing plate and second bearing plate to move, so that polishing block is close to the outer surface of mandrel, in the process of mandrel rotation, it is polished to its square hole edge and outer contour, effectively remove shearing residual burr and uneven area.

Description

Technical Field

[0001] This utility model relates to the field of seat belt spindle production technology, specifically a special edge-cutting device for automotive seat belt spindle covers. Background Technology

[0002] The mold used for producing the automotive seat belt spindle cover adopts a two-cavity structure. After the spindle is die-cast and demolded, the casting consists of two spindle bodies and sprue waste connected to the two spindle bodies. In addition, there are casting burrs in the long hole for the belt and in the square hole on the surface of the spindle. Currently, the waste formed by the sprue and the casting burrs are cleaned entirely manually. The sprue waste is usually broken off with a hammer and then the cross-section is manually ground.

[0003] An existing patent (publication number: CN214640233U) discloses a small shaft cutting mold for automotive seat belts, including two symmetrically arranged templates. The two ends of the two templates facing each other are connected by guide members. The two templates are symmetrically provided with four concave molds on their facing sides. Two concave molds on each template are connected to the corresponding templates through an adjustment mechanism. The adjustment mechanism includes a long strip-shaped adjustment groove, which is opened in a horizontal straight line on the inner side of the template. Bearings are symmetrically embedded on the groove walls at both ends of the adjustment groove. Two bearings are fixedly connected to a bidirectional threaded rod. Nuts are symmetrically threaded on the bidirectional threaded rod. A limit component is connected to the side of the nut near the bottom of the adjustment groove.

[0004] The aforementioned patent, during use, applies rotational force to the bidirectional threaded rod by setting an adjustment mechanism. The two nuts, limited by the limiting component, rotate in the corresponding direction according to the rotation direction of the bidirectional threaded rod. Through the transmission of two transmission blocks, the two dies move synchronously, thereby adjusting the distance between the two dies. The position of the two dies is changed according to the length of different runner waste. During use, it only completes the rough shearing of the finished product cross-section. After shearing, the cross-section has burrs and unevenness, which still requires subsequent manual grinding, increasing the process and labor costs. Moreover, manual operation is inefficient and it is difficult to ensure the consistency of product quality. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a special edge-cutting device for automotive seat belt spindle covers, which has the advantage of integrated cutting and grinding, and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a special edge-cutting device for automotive seat belt spindle covers, comprising a base, a shearing assembly and a grinding assembly disposed above the base, the shearing assembly comprising two first bearing plates, each first bearing plate having a lower bearing seat slidably connected to its upper surface, a lower template disposed above the lower bearing seat, an upper bearing seat fixed to the upper surface of the first bearing plates, an upper template disposed below the upper bearing seat, a spindle assembly disposed between the lower template and the upper template, the spindle assembly comprising a spindle body and waste material, a cutter fixed to the bottom surface of the upper template and the upper surface of the lower template, the grinding assembly comprising two second bearing plates, each second bearing plate having a bracket fixed to its upper surface, and a grinding block mounted on the upper surface of the bracket.

[0007] Furthermore, hydraulic rods are installed on the upper surface and the bottom surface of the lower support seat. The output end of the hydraulic rod is connected to the corresponding upper and lower templates. Slots are provided on the upper surface and the bottom surface of the lower template. Insert rods are fixed on the upper surface and the bottom surface of the lower support seat. The insert rods are inserted into the slots.

[0008] Through the above scheme, the hydraulic rod can achieve precise lifting and lowering of the upper and lower templates, ensuring that the cutting force and position of the cutter on the mandrel assembly are controllable; while the cooperation between the slot and the insert rod can provide guidance during the movement of the template, avoiding a decrease in cutting accuracy due to offset.

[0009] Furthermore, an arc-shaped clamping plate corresponding to the mandrel body is provided between the upper and lower templates. Multiple grooves are provided on the inner sides of both the lower and upper support seats. A protrusion is fixed on the outer side of the arc-shaped clamping plate. The protrusion is inserted into the groove. A reset spring and a reset telescopic rod are installed on the inner wall of the groove located in the middle position. The other end of the reset spring and the reset telescopic rod are connected to the arc-shaped clamping plate.

[0010] With the above scheme, the arc-shaped clamp can hold the mandrel body, and the stability of the arc-shaped clamp during the lifting process is maintained by the insertion of the protrusion and the groove. The return spring can push the arc-shaped clamp to continue to contact the mandrel body after the lower and upper bearing seats are separated after shearing is completed.

[0011] Furthermore, a turntable is installed on the inner wall of both the upper and lower support seats, and a fixed cylinder is installed on the inner side of both turntables. The fixed cylinder is in contact with the mandrel body. A drive motor is installed on the side of the upper support seat, and the output end of the drive motor is connected to the turntable on the side of the upper support seat.

[0012] With the above scheme, the drive motor can drive the turntable to rotate, which in turn drives the mandrel body to rotate through the fixed cylinder. At the same time, the grinding block is close to the mandrel body and can grind the outer surface of the mandrel body.

[0013] Furthermore, a groove is formed on the upper surface of the first support plate, and a slider is fixed on the bottom surface of the lower support seat. The slider is slidably connected to the groove. A synchronous motor is installed at the end of the first support plate, and an adjusting threaded rod is installed at the output end of the synchronous motor. The adjusting threaded rod passes through the slider and is threadedly connected to the slider.

[0014] Through the above scheme, the synchronous motor can drive the adjusting threaded rod to rotate, and with the cooperation of the slider and the slide groove, the lower bearing seat can move along the length direction of the first bearing plate.

[0015] Furthermore, two track grooves are formed on the upper surface of the base. A first track block is fixed on the bottom surface of the first support plate, and a second track block is fixed on the bottom surface of the second support plate. The first track block and the second track block are slidably connected to their respective track grooves. A first adjusting motor and a second adjusting motor are installed on the side of the base. Both the output ends of the first adjusting motor and the second adjusting motor are equipped with bidirectional threaded rods. The first track block and the second track block are threadedly connected to their corresponding bidirectional threaded rods.

[0016] Through the above scheme, the first adjusting motor and the second adjusting motor respectively drive the corresponding bidirectional threaded rod to rotate, and under the sliding cooperation of the first track block, the second track block and the track groove, drive the first bearing plate and the second bearing plate to move.

[0017] Compared with the prior art, the technical solution of this utility model has the following beneficial effects: This specialized edge-cutting device for automotive seatbelt spindle covers integrates shearing and grinding components for unified processing. During shearing, a hydraulic rod drives the upper and lower templates closer together, and the cutter cuts off the waste material from the sprue. After completion, the upper and lower templates cause the clamping plate to separate from the spindle body. Subsequently, the inner wall turntables of the upper and lower support seats drive the fixed cylinder to clamp both ends of the spindle body. The drive motor drives the spindle to rotate, while the first and second adjusting motors drive the first and second support plates to move, making the grinding block close to the outer surface of the spindle. During the rotation of the spindle, the edges of its square holes and outer contours are ground, effectively removing residual burrs and uneven areas from the shearing. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present application; Figure 2 This is a structural diagram of the overall mandrel assembly of this application; Figure 3 This is a side view of the first load-bearing plate of this application. Figure 4 This is a side view of the bearing seat as a whole in this application; Figure 5 This is a partial sectional view of the template as a whole in this application; Figure 6 This is a partial sectional view of the template of this application as a whole.

[0019] In the picture: 1. Base; 2. Shearing assembly; 201. First bearing plate; 202. Lower bearing seat; 203. Lower template; 204. Upper bearing seat; 205. Upper template; 206. Cutting blade; 207. Hydraulic rod; 208. Insert rod; 209. Arc-shaped clamping plate; 210. Protrusion; 211. Return spring; 212. Return telescopic rod; 213. Slider; 214. Synchronous motor; 215. Adjusting threaded rod; 3. Grinding assembly; 301. Second support plate; 302. Bracket; 303. Grinding block; 304. Turntable; 305. Fixing cylinder; 306. Drive motor; 4. Mandrel assembly; 401. Mandrel body; 402. Scrap material; 5. First track block; 6. Second track block; 7. First adjusting motor; 8. Second adjusting motor; 9. Bidirectional threaded rod. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Please see Figure 1 - Figure 6This embodiment of a special edge-cutting device for automotive seat belt spindle covers includes a base 1. A shearing assembly 2 and a grinding assembly 3 are arranged above the base 1. The shearing assembly 2 includes two first support plates 201. A lower support seat 202 is slidably connected to the upper surface of each first support plate 201. A lower template 203 is arranged above the lower support seat 202. An upper support seat 204 is fixed to the upper surface of the first support plate 201. An upper template 205 is arranged below the upper support seat 204. A spindle assembly 4 is arranged between the lower template 203 and the upper template 205. The spindle assembly 4 includes a spindle body 401 and a waste material 402. A cutter 206 is fixed to the bottom surface of the upper template 205 and the upper surface of the lower template 203. The grinding assembly 3 includes two second support plates 301. A bracket 302 is fixed to the upper surface of each second support plate 301. A grinding block 303 is installed on the upper surface of the bracket 302.

[0022] Please see Figure 3 , Figure 5 and Figure 6 Hydraulic rods 207 are installed on the upper surface of the lower support 202 and the bottom surface of the upper support 204. The output end of the hydraulic rods 207 is connected to the corresponding upper template 205 and lower template 203. Slots are provided on the upper surface of the upper template 205 and the bottom surface of the lower template 203. Insert rods 208 are fixed on the upper surface of the lower support 202 and the bottom surface of the upper support 204. The insert rods 208 are inserted into the slots. The hydraulic rods 207 enable precise lifting and lowering of the upper template 205 and the lower template 203, ensuring that the cutting force and position of the cutter 206 on the mandrel assembly 4 are controllable. The cooperation between the slots and the insert rods 208 can provide guidance during the movement of the templates, avoiding a decrease in cutting accuracy due to offset.

[0023] Please see Figure 4 , Figure 5 and Figure 6An arc-shaped clamping plate 209 corresponding to the mandrel body 401 is provided between the upper template 205 and the lower template 203. Multiple grooves are provided on the inner surfaces of the lower support seat 202 and the upper support seat 204. A protrusion 210 is fixed to the outer surface of the arc-shaped clamping plate 209, and the protrusion 210 is inserted into the groove. A return spring 211 and a return telescopic rod 212 are installed on the inner wall of the groove located in the middle position. The other ends of the return spring 211 and the return telescopic rod 212 are connected to the arc-shaped clamping plate 209. The arc-shaped clamping plate 209 can clamp the mandrel body 401. The stability of the arc-shaped clamping plate 209 during the lifting and lowering process is maintained by the insertion of the protrusion 210 into the groove. The return spring 211 can be used to clamp the lower support seat 204 after shearing is completed. After 02 separates from the upper support seat 204, the arc-shaped clamping plate 209 continues to contact the spindle body 401. Turntables 304 are installed on the inner walls of both the upper support seat 204 and the lower support seat 202. Fixing cylinders 305 are installed on the inner sides of both turntables 304. The fixing cylinders 305 are in contact with the spindle body 401. A drive motor 306 is installed on the side of the upper support seat 204. The output end of the drive motor 306 is connected to the turntables 304 on the side of the upper support seat 204. The drive motor 306 can drive the turntables 304 to rotate, and then drive the spindle body 401 to rotate through the fixing cylinders 305. At the same time, the grinding block 303 approaches the spindle body 401 and can grind the outer surface of the spindle body 401.

[0024] Please see Figure 1 , Figure 3 and Figure 4 The upper surface of the first support plate 201 is provided with a sliding groove, and the bottom surface of the lower support seat 202 is fixed with a slider 213. The slider 213 is slidably connected to the sliding groove. A synchronous motor 214 is installed at the end of the first support plate 201. An adjusting threaded rod 215 is installed at the output end of the synchronous motor 214. The adjusting threaded rod 215 passes through the slider 213 and is threadedly connected to the slider 213. The synchronous motor 214 can drive the adjusting threaded rod 215 to rotate. With the cooperation of the slider 213 and the sliding groove, the lower support seat 202 can move along the length direction of the first support plate 201.

[0025] Please see Figure 1 , Figure 3 and Figure 4The upper surface of the base 1 has two track grooves. The bottom surface of the first support plate 201 is fixed with a first track block 5, and the bottom surface of the second support plate 301 is fixed with a second track block 6. The first track block 5 and the second track block 6 are slidably connected to their respective track grooves. The side of the base 1 is equipped with a first adjusting motor 7 and a second adjusting motor 8. The output ends of the first adjusting motor 7 and the second adjusting motor 8 are both equipped with bidirectional threaded rods 9. The first track block 5 and the second track block 6 are threadedly connected to their respective bidirectional threaded rods 9. The first adjusting motor 7 and the second adjusting motor 8 drive the corresponding bidirectional threaded rods 9 to rotate. Under the sliding cooperation of the first track block 5, the second track block 6 and the track groove, the first support plate 201 and the second support plate 301 are moved.

[0026] It should be noted that the waste material 402 should be removed promptly after the cutting operation is completed.

[0027] The working principle of the above embodiment is as follows: When the mandrel assembly 4 needs to be trimmed, the mandrel body 401 is first placed on the arc-shaped clamping plate 209 of the lower template 203, and the waste material 402 is located in the gap between the two lower support seats 202. The hydraulic rod 207 is activated, and the upper template 205 and the lower template 203 move closer to each other under the drive of the hydraulic rod 207. The insertion rod 208 slides along the slot to ensure that the template movement direction is accurate. At this time, the cutter 206 on the upper template 205 and the lower template 203 gradually approaches the waste material 402. At the same time, the arc-shaped clamping plate 209 moves with the template under the guidance of the protrusion 210 and the groove. The return spring 211 and the return telescopic rod 212 are compressed until the arc-shaped clamping plate 209 completely clamps the mandrel body 401. The cutter 206 contacts the waste material 402 and applies pressure to cut the waste material 402 off the mandrel body 401. After shearing, the hydraulic rod 207 drives the upper template 205 and the lower template 203 to separate. At this time, the fixing cylinder 305 on the inner wall of the upper support seat 204 and the lower support seat 202 clamps and fixes the two ends of the mandrel body 401. Then, the first adjusting motor 7 and the second adjusting motor 8 drive the corresponding bidirectional threaded rod 9 to rotate. The first track block 5 and the second track block 6 slide along the track groove, driving the first support plate 201 and the second support plate 301 to move synchronously, so that the mandrel body 401 moves to the side of the grinding block 303 of the grinding assembly 3. The drive motor 306 is started, and the drive motor 306 drives the turntable 304 to rotate. The fixing cylinder 305 rotates accordingly, thereby driving the mandrel body 401 to rotate. During the rotation, the grinding block 303 grinds the casting burrs and cross-section positions on the surface of the mandrel body 401, realizing the integrated processing of shearing and grinding.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

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

Claims

1. A special edge-cutting device for automotive seat belt spindle cover, comprising a base (1), characterized in that: A shearing assembly (2) and a grinding assembly (3) are provided above the base (1). The shearing assembly (2) includes two first support plates (201). A lower support seat (202) is slidably connected to the upper surface of each first support plate (201). A lower template (203) is provided above the lower support seat (202). An upper support seat (204) is fixed to the upper surface of the first support plate (201). An upper template (205) is provided below the upper support seat (204). A mandrel assembly (4) is provided between (203) and the upper template (205). The mandrel assembly (4) includes a mandrel body (401) and waste material (402). A cutter (206) is fixed on the bottom surface of the upper template (205) and the upper surface of the lower template (203). The grinding assembly (3) includes two second support plates (301). A bracket (302) is fixed on the upper surface of each second support plate (301). A grinding block (303) is installed on the upper surface of the bracket (302).

2. The special edge-cutting device for automotive seat belt spindle cover according to claim 1, characterized in that: Hydraulic rods (207) are installed on the upper surface of the lower support (202) and the bottom surface of the upper support (204). The output end of the hydraulic rod (207) is connected to the corresponding upper template (205) and lower template (203). Slots are provided on the upper surface of the upper template (205) and the bottom surface of the lower template (203). Insert rods (208) are fixed on the upper surface of the lower support (202) and the bottom surface of the upper support (204). The insert rods (208) are inserted into the slots.

3. The special edge-cutting device for automotive seat belt spindle cover according to claim 2, characterized in that: An arc-shaped clamping plate (209) corresponding to the mandrel body (401) is provided between the upper template (205) and the lower template (203). Multiple grooves are provided on the inner side of the lower support seat (202) and the upper support seat (204). A protrusion (210) is fixed on the outer side of the arc-shaped clamping plate (209). The protrusion (210) is inserted into the groove. A reset spring (211) and a reset telescopic rod (212) are installed on the inner wall of the groove located in the middle position. The other end of the reset spring (211) and the reset telescopic rod (212) is connected to the arc-shaped clamping plate (209).

4. The special edge-cutting device for automotive seat belt spindle cover according to claim 1, characterized in that: The inner walls of the upper support (204) and the lower support (202) are each equipped with a turntable (304). The inner sides of the two turntables (304) are each equipped with a fixing cylinder (305). The fixing cylinder (305) is in contact with the spindle body (401). The side of the upper support (204) is equipped with a drive motor (306). The output end of the drive motor (306) is connected to the turntable (304) on the side of the upper support (204).

5. A special edge-cutting device for automotive seat belt spindle cover according to claim 1, characterized in that: The upper surface of the first support plate (201) is provided with a sliding groove, and the bottom surface of the lower support seat (202) is fixed with a slider (213). The slider (213) is slidably connected to the sliding groove. A synchronous motor (214) is installed at the end of the first support plate (201). An adjusting threaded rod (215) is installed at the output end of the synchronous motor (214). The adjusting threaded rod (215) passes through the slider (213) and is threadedly connected to the slider (213).

6. A special edge-cutting device for automotive seat belt spindle cover according to claim 1, characterized in that: The upper surface of the base (1) has two track grooves. The bottom surface of the first bearing plate (201) is fixed with a first track block (5), and the bottom surface of the second bearing plate (301) is fixed with a second track block (6). The first track block (5) and the second track block (6) are slidably connected to their respective track grooves. The side of the base (1) is equipped with a first adjusting motor (7) and a second adjusting motor (8). The output ends of the first adjusting motor (7) and the second adjusting motor (8) are both equipped with bidirectional threaded rods (9). The first track block (5) and the second track block (6) are both threadedly connected to their corresponding bidirectional threaded rods (9).

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