A progressive stamping forming device for stainless steel watch case shells

Abstract

The utility model discloses a kind of progressive stamping forming devices for stainless steel watchcase watch embryo, the utility model relates to stamping equipment technical field.Installation base, the installation base is provided with the installation mechanism for the stamping processing of stainless steel watchcase watch embryo, installation mechanism includes, the utility model is decomposed into multiple simple work steps by three groups of independent stamping head and the installation base of accurate positioning, only complete a part of deformation in each station, effectively reduce the forming difficulty and stress concentration of single station, solve the workpiece breakage problem caused by traditional single stamping stress concentration, and stamping head is connected with installation block by shock-absorbing spring and damping strut, form an elastic buffer system, the structure can absorb the impact energy of stamping instant, significantly reduce the hard collision between stamping head and workpiece, prolong the service life of precision stamping head, and reduce the impact scratch on workpiece surface.

Description

Technical Field

[0001] This utility model relates to the field of stamping equipment technology, specifically to a progressive stamping forming device for stainless steel watch case blanks. Background Technology

[0002] With the continuous upgrading of the consumer market, consumers have increasingly stringent requirements for the quality of stainless steel watch cases. They not only focus on functionality but also place extremely high demands on the dimensional accuracy, surface quality, and overall aesthetics of the case. As a crucial component of a watch, the forming quality of the stainless steel case directly affects the watch's appearance and performance. Therefore, efficient, precise stamping technology that ensures the surface quality of the case has become key to the industry's development. Due to its excellent texture, wear resistance, and corrosion resistance, stainless steel watch cases have become the mainstream choice for high-end watch manufacturing. These cases are typically manufactured from metal sheets through a stamping process. However, as a high-hardness, high-strength material, stainless steel is prone to work hardening during plastic deformation and is extremely sensitive to forming processes. This presents a significant challenge to the stamping manufacturing of high-precision, high-quality watch cases.

[0003] However, in terms of forming process, many devices still rely on single-station single-stamping forming. For watch case blanks with complex structures, the one-time forming process will cause the metal material to undergo violent and complex flow in a short period of time, resulting in a large internal stress concentration inside the workpiece. Stress concentration not only easily leads to the workpiece breaking or generating micro-cracks during the stamping process, seriously affecting the yield, but also affects the stability of the stamping process. In existing devices, the stamping head and upper die are mostly rigidly connected, lacking an effective buffering mechanism. At the moment the punch contacts the blank, the huge impact force can easily be transformed into a hard collision and cause damage due to small alignment errors or pressure fluctuations. Therefore, this utility model provides a progressive stamping forming device for stainless steel watch case blanks. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a progressive stamping forming device for stainless steel watch case blanks. This solves the problem that many devices still rely on single-station, single-pass stamping forming in terms of forming process. For watch case blanks with complex structures, the one-pass forming process causes the metal material to undergo intense and complex flow in a short period of time, resulting in a large internal stress concentration inside the workpiece. This stress concentration can easily lead to the workpiece breaking or generating micro-cracks during the stamping process, seriously affecting the yield.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a progressive stamping forming device for stainless steel watch case blanks, comprising a mounting base, wherein the mounting base is provided with a mounting mechanism for stamping the stainless steel watch case blank, the mounting mechanism comprising:

[0006] The processing component includes a mounting base with a mounting seat connected to it via a lifting component at its upper end. Three sets of mounting seats are arranged along the mounting base. A mounting bracket is fixed to the lower end face of the mounting seat. A mounting block is engaged inside the mounting bracket. A punching head connected to the lower end of the mounting block is provided via an elastic component. A sliding groove is opened inside the mounting base. A mounting base connected to it via a threaded component is provided on the sliding groove. A slot is opened on the side wall of the mounting base. A locking block bracket connected to it via a pushing component is provided inside the slot. Three sets of locking block brackets are arranged on one side of the mounting base.

[0007] The mounting components include a mounting slot inside the mounting base, a clamping plate connected by a telescopic assembly inside the mounting slot, and a pressure plate inside the clamping plate.

[0008] Preferably, the lifting assembly includes a support frame fixed to the upper surface of the mounting base, a top plate fixed to the top of the support frame, three sets of top plates, hydraulic rods fixed inside the top plates, a mounting seat fixedly connected to the lower end of the hydraulic rods, and guide rods slidably connected to the two sides of the mounting seat, the guide rods being fixedly connected to the mounting base.

[0009] Preferably, bolts are evenly distributed along the edge of the mounting bracket, and the mounting block and the mounting bracket are connected by bolts to form a detachable structure.

[0010] Preferably, a shock-absorbing spring is fixed inside the buffer housing, and the stamping head is fixedly connected to one end of the shock-absorbing spring. The stamping head is slidably connected to the buffer housing, and a damping support rod is provided on the inner ring of the shock-absorbing spring. The damping support rod is fixedly connected to the buffer housing.

[0011] Preferably, the threaded assembly includes a screw rotatably connected inside the slide groove, one end of the screw is provided with a motor for driving, and the motor is fixedly connected to one end of the mounting base. A slider is fixed to the lower end face of the mounting base, and the slider is slidably connected to the inner wall of the slide groove. The slider is threadedly connected to the screw. The pushing assembly includes three sets of first electric push rods evenly fixed at the edge of the mounting base. The locking block bracket is fixedly connected to the telescopic end of the first electric push rod, and the locking block bracket is engaged with the locking groove.

[0012] Preferably, the telescopic assembly includes a second electric push rod fixed on both sides of the mounting groove, a clamping plate fixedly connected to the telescopic end of the second electric push rod, the clamping plate having an L-shaped structure, a telescopic spring uniformly fixed to the upper end of the clamping plate, and a pressure plate fixedly connected to the lower end of the telescopic spring.

[0013] Beneficial effects

[0014] This invention provides a progressive stamping forming apparatus for stainless steel watch case blanks. Compared with the prior art, it has the following advantages:

[0015] Firstly, this invention breaks down the complex stainless steel watch case forming process into multiple simple steps through three independent stamping heads and a precisely positioned mounting base. Only a portion of the deformation is completed at each station, effectively reducing the forming difficulty and stress concentration at a single station. This solves the problem of workpiece breakage caused by stress concentration during traditional single stamping. Furthermore, the stamping head is connected to the mounting block through shock-absorbing springs and damping rods to form an elastic buffer system. This structure can absorb the impact energy during stamping, significantly reducing hard collisions between the stamping head and the workpiece, extending the service life of the precision stamping head, and reducing impact scratches on the workpiece surface.

[0016] Secondly, this utility model uses a second electric push rod to drive the clamping plate for rigid clamping in the horizontal direction, while using a telescopic spring to drive the pressure plate to provide elastic clamping in the vertical direction, forming a clamping system that fixes the work position from two directions at the same time, avoiding large offsets during processing. The pressure plate provides pressure through the telescopic spring, which is a flexible force. Compared with pure rigid pressing, it can effectively press down the blank without scratching the precious surface of the stainless steel blank due to over-positioning or slight deformation of the mounting base. It is particularly suitable for processing stainless steel watch cases with extremely high surface finish requirements. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the buffer shell structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the mounting base connection structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the mounting slot of this utility model.

[0021] In the diagram: 1. Mounting base; 2. Support frame; 201. Top plate; 202. Hydraulic rod; 203. Mounting seat; 204. Guide rod; 3. Mounting bracket; 301. Mounting block; 302. Buffer housing; 303. Shock-absorbing spring; 304. Damping support rod; 305. Punching head; 4. Slide groove; 401. Screw; 402. Mounting base; 403. Slot; 404. Slot bracket; 405. First electric push rod; 5. Mounting groove; 501. Second electric push rod; 502. Clamping plate; 503. Telescopic spring; 504. Pressure plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a progressive stamping forming device for stainless steel watch case blanks, including a mounting base 1, on which a mounting mechanism for stamping stainless steel watch case blanks is provided, the mounting mechanism including:

[0024] The processing component includes a mounting base 1 with a mounting seat 203 connected to the upper end via a lifting component. The mounting seat 203 is arranged in three sets along the mounting base 1. A mounting bracket 3 is fixed to the lower end face of the mounting seat 203. A mounting block 301 is engaged inside the mounting bracket 3. A punching head 305 connected to the lower end of the mounting block 301 is provided via an elastic component. A sliding groove 4 is opened inside the mounting base 1. A mounting base 402 connected via a threaded component is provided on the sliding groove 4. A slot 403 is opened on the side wall of the mounting base 402. A locking block bracket 404 connected via a push component is provided inside the slot 403. Three sets of locking block brackets 404 are arranged on one side of the mounting base 1.

[0025] The mounting components include a mounting slot 5 inside the mounting base 402, a clamping plate 502 connected by a telescopic component inside the mounting slot 5, and a pressure plate 504 inside the clamping plate 502.

[0026] In a preferred embodiment, the lifting assembly includes a support frame 2 fixed to the upper surface of the mounting base 1. A top plate 201 is fixed to the top of the support frame 2. The top plate 201 is configured in three sets. A hydraulic rod 202 is fixed inside the top plate 201. A mounting base 203 is fixedly connected to the lower end of the hydraulic rod 202. Guide rods 204 are slidably connected to both sides of the mounting base 203. The guide rods 204 are fixedly connected to the mounting base 1. The threaded assembly includes a screw 401 rotatably connected inside a groove 4. A motor for driving is provided at one end of the screw 401, and the motor is fixedly connected to one end of the mounting base 1. The mounting base 4... A slider is fixed to the lower end face of 02, and the slider is slidably connected to the inner wall of the slide groove 4. The slider is threadedly connected to the screw 401. The push assembly includes three sets of first electric push rods 405 evenly fixed at the edge of the mounting base 1. The block bracket 404 is fixedly connected to the telescopic end of the first electric push rod 405. The block bracket 404 is engaged with the slot 403. The mounting base 402 is moved by the screw 401 and moves sequentially to the punch head 305 at the lower end of the three sets of mounting bases 203 for progressive punching. Each time it moves to the specified position, the block bracket 404 engages with the slot 403.

[0027] Furthermore, a shock-absorbing spring 303 is fixed inside the buffer housing 302, and a punch head 305 is fixedly connected to one end of the shock-absorbing spring 303. The punch head 305 is slidably connected to the buffer housing 302. A damping support rod 304 is provided on the inner ring of the shock-absorbing spring 303. The damping support rod 304 is fixedly connected to the buffer housing 302 and is used to buffer the punch head 305 when it is working.

[0028] Specifically, the mounting base 402, driven by the screw 401, moves along the slide groove 4 to below the first stamping head 305. Upon reaching the position, the first electric push rod 405 actuates, pushing the locking block bracket 404 to engage with the locking groove 403 on the side wall of the mounting base 402, mechanically locking the mounting base 402 at the current station to prevent it from moving during the stamping process. The hydraulic rod 202 corresponding to this station drives the mounting seat 203 to move downward along the guide rod 204. The mounting seat 203 drives the stamping head 305 below it to contact and stamp the blank mounted on the mounting base 402. During the stamping process, if the pressure is too high or there is a slight misalignment, The stamping head 305 can achieve buffering by compressing the damping spring 303 and slightly retracting along the damping support rod 304, thus avoiding damage to the mold or workpiece from hard impact. After the first stamping is completed, the hydraulic rod 202 rises, the first electric push rod 405 retracts, releasing the lock on the mounting base 402. The screw 401 rotates again, driving the mounting base 402 to move precisely to the second station. The clamping block bracket 404 is locked into the clamping slot 403 again. Then, the hydraulic rod 202 of the second station drives its stamping head 305 to perform secondary forming of more complex shapes. This process is repeated until the workpiece is finally formed after progressive stamping through three stations.

[0029] Additional explanation: The locking bracket 404 has an L-shaped structure. When the mounting base 402 moves, it first approaches one side of the locking bracket 404, and then pushes the locking bracket 404 to lock it with the slot 403, ensuring that the mounting base 402 does not shift its position each time it stops.

[0030] In a preferred embodiment, bolts are evenly arranged at the edge of the mounting bracket 3, and the mounting block 301 forms a detachable structure with the mounting bracket 3 by means of bolts, which can be used to disassemble and replace the punch head 305.

[0031] In a preferred embodiment, the telescopic assembly includes a second electric push rod 501 fixed on both sides of the mounting groove 5, a clamping plate 502 fixedly connected to the telescopic end of the second electric push rod 501, the clamping plate 502 having an L-shaped structure, a telescopic spring 503 uniformly fixed at the upper end of the clamping plate 502, and a pressure plate 504 fixedly connected to the lower end of the telescopic spring 503. The blank is inserted into the interior of the mounting groove 5 along the pressure plate 504. When the pressure plate 504 contacts the upper surface of the blank, the telescopic spring 503 is compressed, thereby providing a continuous and elastic downward pressing force to the blank. The second electric push rod 501 is activated, causing its telescopic end to retract inward, driving the L-shaped clamping plates 502 on both sides to move towards each other, positioning and clamping the blank from the side.

[0032] The electric actuator model can be TOBO-600, the screw-driven motor model can be MSMF042L1U2M, and the hydraulic rod model can be CDA2B40-50-100.

[0033] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0034] During operation, firstly, the stainless steel watch case blank is placed into the mounting groove 5 of the mounting base 402. The mounting assembly is then activated, and the second electric push rod 501 drives the L-shaped clamping plates 502 on both sides to move towards each other, clamping the blank from the side. At the same time, the pressure plate 504 fixed above the clamping plate 502, under the action of the telescopic spring 503, elastically presses the upper surface of the blank downward, completing the multi-directional flexible fixation of the workpiece.

[0035] Subsequently, the processing components begin operation. The motor drives the screw 401 to rotate within the slide groove 4, causing the threaded mounting base 402 to move horizontally to directly below the punch head 305 at the first station. Upon arrival, the first electric push rod 405 of the push assembly actuates, pushing the locking block bracket 404 into the slot 403 on the side wall of the mounting base 402, mechanically locking it. At this time, the lifting assembly starts, and the hydraulic rod 202 at this station pushes the mounting base 203 down precisely along the guide rod 204, causing the punch head 305, fixed by the mounting bracket 3 and the mounting block 301, to perform the first punch on the blank. During the punching process, if pressure waves are encountered... If there is a movement or misalignment, the stamping head 305 can compress the damping spring 303 and retract slightly along the damping support rod 304 to achieve buffer protection. After the first stamping is completed, the hydraulic rod 202 rises, the first electric push rod 405 retracts and unlocks, and the screw 401 drives the mounting base 402 to move to the second station and is locked again by the clamping block bracket 404 for the second, more complex stamping. This process is repeated once until the workpiece is finally formed through progressive stamping at three stations. Throughout the process, the mounting block 301 and the stamping head 305 can be quickly replaced by removing the bolts on the mounting bracket 3 to adapt to the processing requirements of different products.

[0036] 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 process, method, article, or apparatus.

[0037] 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 progressive stamping forming apparatus for stainless steel watch case blanks, comprising a mounting base (1), characterized in that: The mounting base (1) is provided with a mounting mechanism for stamping stainless steel watch case blanks. The mounting mechanism includes: The processing component includes a mounting base (1) with a mounting seat (203) connected by a lifting component at the upper end. The mounting seat (203) is provided in three sets along the mounting base (1). The mounting bracket (3) is fixed on the lower end face of the mounting seat (203). The mounting block (301) is engaged inside the mounting bracket (3). The lower end of the mounting block (301) is provided with a punch head (305) connected by an elastic component. The mounting base (1) has a sliding groove (4) inside. The sliding groove (4) is provided with a mounting base (402) connected by a threaded component. The mounting base (402) has a slot (403) on its side wall. The slot (403) is provided with a block bracket (404) connected by a push component inside. The block bracket (404) is provided in three sets on one side of the mounting base (1). The mounting components include a mounting slot (5) inside the mounting base (402), a clamping plate (502) connected by a telescopic component is provided inside the mounting slot (5), and a pressure plate (504) is provided inside the clamping plate (502).

2. The progressive stamping forming apparatus for stainless steel watch case blanks according to claim 1, characterized in that: The lifting assembly includes a support frame (2) fixed to the upper surface of the mounting base (1), a top plate (201) fixed to the top of the support frame (2), the top plate (201) is configured in three groups, a hydraulic rod (202) is fixed inside the top plate (201), the mounting seat (203) is fixedly connected to the lower end of the hydraulic rod (202), and guide rods (204) are slidably connected to both sides of the mounting seat (203), and the guide rods (204) are fixedly connected to the mounting base (1).

3. The progressive stamping forming apparatus for stainless steel watch case blanks according to claim 1, characterized in that: Bolts are evenly arranged at the edge of the mounting bracket (3), and the mounting block (301) is connected to the mounting bracket (3) by bolts to form a detachable structure.

4. The progressive stamping forming apparatus for stainless steel watch case blanks according to claim 1, characterized in that: The elastic component includes a buffer housing (302) fixed at the lower end of the mounting block (301), a shock-absorbing spring (303) fixed inside the buffer housing (302), a stamping head (305) fixedly connected to one end of the shock-absorbing spring (303), the stamping head (305) being slidably connected to the buffer housing (302), and a damping support rod (304) provided on the inner ring of the shock-absorbing spring (303), the damping support rod (304) being fixedly connected to the buffer housing (302).

5. The progressive stamping forming apparatus for stainless steel watch case blanks according to claim 1, characterized in that: The threaded assembly includes a screw (401) rotatably connected inside the slide groove (4). One end of the screw (401) is provided with a motor for driving, and the motor is fixedly connected to one end of the mounting base (1). The lower end face of the mounting base (402) is fixed with a slider, and the slider is slidably connected to the inner wall of the slide groove (4). The slider is threadedly connected to the screw (401). The push assembly includes three sets of first electric push rods (405) evenly fixed at the edge of the mounting base (1). The locking block bracket (404) is fixedly connected to the telescopic end of the first electric push rod (405). The locking block bracket (404) is engaged with the locking groove (403).

6. The progressive stamping forming apparatus for stainless steel watch case blanks according to claim 1, characterized in that: The telescopic assembly includes a second electric push rod (501) fixed on both sides of the mounting groove (5), a clamping plate (502) fixedly connected to the telescopic end of the second electric push rod (501), the clamping plate (502) has an L-shaped structure, a telescopic spring (503) is evenly fixed at the upper end of the clamping plate (502), and a pressure plate (504) is fixedly connected to the lower end of the telescopic spring (503).

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