A mold multi-station combined machining clamp

Abstract

The present application relates to a kind of mould multi-station combined processing clamps, fixed clamping plate is equipped at the left and right ends of base plate, two fixed clamping plates are equipped with two groups of outer support mechanism between front and back, each group of outer support mechanism is equipped with left-right symmetrical mobile clamping assembly, a total of four movable clamping plates, with two end fixed clamping plate one-to-one cooperation, constitute four-station synchronous clamping structure, four mould workpieces can be clamped simultaneously, effectively reduce workpiece disassembly and equipment standby time, improve processing efficiency and equipment utilization, adapt to batch production demand;Each station movable clamping plate can be independently left-right fine adjustment on mobile seat, and be locked by fixed assembly, can be adapted to different specifications size workpiece as needed, without replacing clamp, strong versatility;Clamp adopts integrated single drive structure, can synchronously drive four-station mobile seat to slide in and out, realize all station synchronous clamping and loosening, station action synchronism is good, clamping consistency is high, effectively improve batch workpiece processing precision and production stability.

Description

Technical Field

[0001] This invention relates to the field of machining fixture technology, and in particular to a multi-station combined machining fixture for molds. Background Technology

[0002] In the field of mold and mechanical parts processing, fixtures are the core tooling equipment that ensures the machining accuracy, stability and efficiency of workpieces, and are widely used in various precision machining processes such as milling, drilling and grinding.

[0003] However, most traditional fixtures are single-station structures, capable of clamping only one mold workpiece at a time for processing. When multiple mold workpieces need to be processed, they can only be clamped one by one through repeated clamping operations, which is cumbersome and leads to low processing efficiency. At the same time, frequent clamping and disassembly also increases the workload of the operator. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a multi-station combined machining fixture for molds.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A multi-station combined machining fixture for molds includes a base plate, with fixed clamping plates at both ends of the base plate. Two external support mechanisms are spaced apart between the two fixed clamping plates, and each external support mechanism includes a movable clamping assembly spaced apart to the left and right. The movable clamping assembly includes a movable seat, a movable clamping plate, and a fixing assembly. The movable seat can slide in the left and right direction, and the movable clamping plate is slidably disposed on the outside of the movable seat and fixed to the movable seat by the fixing assembly. The movable clamping plate and the fixed clamping plate cooperate to clamp the workpiece. A driving device is also provided on the base plate, which can drive the movable seats on the left and right sides to move synchronously outward or inward.

[0007] In some embodiments, a transverse sliding groove is provided on the base plate and below each of the movable seats. A sliding block that slides in the transverse sliding groove is provided at the lower end of each of the movable seats. A sliding seat is provided at the lower end of the sliding block. A transverse sliding rail is provided at the lower end of the base plate and on both the front and rear sides of the transverse sliding groove. The sliding seat slides on the transverse sliding rail.

[0008] In some embodiments, the driving device includes a bidirectional lead screw rotatably disposed at the lower end of the base plate. The bidirectional lead screw extends in the front-rear direction. Lead screw sleeves are provided on both the left-hand and right-hand sections of the bidirectional lead screw. The two lead screw sleeves are respectively connected to the front and rear sets of external support mechanisms. A connecting rod is hinged to the lower end of each sliding seat. The other end of the connecting rod is hinged to the lead screw sleeve. A hexagonal head is provided at one end of the bidirectional lead screw.

[0009] In some embodiments, a sliding groove is provided at the lower end of the base plate and between the two movable clamping assemblies. The sliding groove extends in the front-rear direction, and the bidirectional lead screw is disposed in the sliding groove, with the lead screw sleeve sliding within the sliding groove.

[0010] In some embodiments, guide posts are provided at intervals on one side of the movable clamping plate located on the movable seat. The guide posts are movably inserted through the movable seat. The fixing component is a bolt, which is located at the upper end of the movable seat and is used to press the guide posts.

[0011] In some embodiments, a scale is provided at the upper end of the movable clamping plate, and a limiting groove is provided at the upper end of the movable seat. The scale slides within the limiting groove, and an indicator arrow is provided on one side of the limiting groove.

[0012] In some embodiments, a rubber pad is provided on the outer side of the movable clamping plate.

[0013] In some embodiments, positioning bases are detachably installed at both the front and rear ends of the fixed clamping plate by screws.

[0014] In some embodiments, support frames are provided at all four corners of the base plate, an L-shaped plate is provided at the lower end of the support frame, and a mounting groove is provided on the L-shaped plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This fixture has two sets of external support mechanisms spaced back and forth between the fixed clamping plates at both ends of the base plate. Each set of external support mechanisms is equipped with symmetrical movable clamping components, totaling four movable clamping plates. The four movable clamping plates correspond one-to-one with the fixed clamping plates at the left and right ends of the base plate to form a four-station synchronous clamping and processing structure. It can simultaneously complete the clamping and fixing of four mold workpieces. Multiple workpieces can be continuously processed in a single clamping, effectively reducing the idle time of workpiece disassembly and equipment standby, significantly improving the utilization rate of machine tools and workpiece processing capacity, adapting to the needs of batch and large-scale production of mold workpieces, and greatly optimizing the production cycle.

[0017] 2. Each set of movable clamping components in this fixture is equipped with a sliding base that can slide left and right. All four movable clamping plates can be independently and finely adjusted on the outside of their corresponding movable bases and locked in place by fixing components. Each station forms an independent, adjustable clamping station through the cooperation of the movable clamping plates and the fixed clamping plates on both sides. The clamping distance and position of each station can be adjusted individually or uniformly according to different specifications and sizes of mold workpieces. It can adapt to the simultaneous processing of multiple workpieces without changing the main fixture equipment, effectively reducing tooling changeover costs and mold adjustment time, and solving the technical pain points of traditional fixtures such as fixed station positions, poor adaptability, and weak versatility.

[0018] 3. It adopts an integrated drive structure, which can synchronously drive the four workstations to clamp and release in a single drive unit, without the need for multiple drive components or manual adjustment of each workstation individually. Attached Figure Description

[0019] Figure 1 This is one of the three-dimensional structural schematic diagrams of the machining fixture of the present invention.

[0020] Figure 2 This is the second three-dimensional structural schematic diagram of the machining fixture of the present invention.

[0021] Figure 3 This is a top view of the machining fixture of the present invention.

[0022] Figure 4 For the present invention Figure 1 A magnified structural diagram at point A.

[0023] Figure 5 For the present invention Figure 2 A magnified structural diagram at point B.

[0024] Figure 6 This is an exploded structural diagram of the movable clamping component of the present invention. Detailed Implementation

[0025] The following detailed description provides various embodiments or examples for carrying out the present invention. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0026] like Figures 1-6The multi-station combined machining fixture shown includes a base plate 1. Fixed clamping plates 2 are provided at both the left and right ends of the base plate 1. Two external support mechanisms are arranged at a distance between the two fixed clamping plates 2. Each of the two external support mechanisms includes a movable clamping assembly arranged at a distance between the left and right sides. The movable clamping assembly includes a movable seat 3, a movable clamping plate 4, and a fixing assembly. The movable seat 3 can slide in the left and right direction. The movable clamping plate 4 is slidably disposed on the outside of the movable seat 3 and is fixed to the movable seat 3 by the fixing assembly. The movable clamping plate 4 cooperates with the fixed clamping plates 2 to clamp the workpiece. A driving device is also provided on the base plate 1. The driving device can drive the movable seats 3 on the left and right sides to move outward or inward synchronously.

[0027] According to the above structure, the fixture relies on the base plate 1 as the overall mounting and bearing base, providing a stable mounting support foundation for each clamping and driving structure, ensuring the overall structural strength and operational stability of the equipment. Fixed clamping plates 2 are fixedly installed at both ends of the base plate 1, serving as fixed clamping references for each clamping station and providing fixed-point support for workpiece clamping.

[0028] On the base plate 1 between the two fixed clamping plates 2, two sets of external support mechanisms are arranged at intervals. Each set of external support mechanisms is equipped with movable clamping components distributed at intervals on the left and right, for a total of four sets of movable clamping stations, which can simultaneously realize the clamping and processing of four mold workpieces. The movable clamping components consist of a movable base 3, a movable clamping plate 4, and a fixed component. The movable base 3 can slide along the left and right direction of the base plate 1, providing a displacement basis for the overall adjustment of the clamping distance.

[0029] The movable clamping plate 4 is slidably mounted on the outside of the movable seat 3. It can be adjusted left and right on the movable seat 3 according to the actual size and specifications of the workpiece to be processed, so as to accurately adapt to the workpiece size. After the fine adjustment of the clamping distance is completed, the movable clamping plate 4 is locked and fixed on the movable seat 3 by the fixing component, so as to achieve precise positioning and locking of the clamping size in a single station.

[0030] During workpiece clamping, the movable clamping plate 4 and the corresponding fixed clamping plate 2 form a relative clamping structure to achieve clamping and positioning of a single workpiece. The four sets of clamping structures cooperate independently to form a four-station synchronous clamping structure. At the same time, the drive device mounted on the base plate 1 can output power uniformly to synchronously drive all the moving seats 3 on the left and right sides to move inward or outward synchronously.

[0031] When the drive unit drives the moving base 3 to move outward synchronously, it moves the movable clamping plates 4 of each station closer to the fixed clamping plate 2, achieving synchronous clamping and fixing of the workpieces at the four stations. When the drive unit drives the moving base 3 to move inward synchronously, it moves the movable clamping plates 4 of each station away from the fixed clamping plate 2, achieving synchronous unloading and unloading of the workpieces at the four stations. The overall structure is controlled by a single drive linkage, requiring only one drive unit to uniformly control the synchronous opening and closing of the four stations. It has high synchronization of actions and uniform and stable clamping force. At the same time, it can adapt to workpieces of different specifications by relying on the fine adjustment structure of the movable clamping plates 4, taking into account the consistency of batch processing and the adaptability and versatility of workpieces, effectively improving the batch processing efficiency and clamping accuracy of mold workpieces.

[0032] See Figure 2 , Figure 5 As shown, the fixture has a transverse sliding groove 21 below each of the movable seats 3 on the base plate 1. The transverse sliding groove 21 provides a limiting and guiding basis for the left and right sliding of the movable seats 3. Each movable seat 3 is equipped with a sliding block 22 at its lower end. The sliding block 22 is slidably disposed inside the transverse sliding groove 21 to realize the initial sliding cooperation and radial limiting between the movable seat 3 and the base plate 1, ensuring that the movable seat 3 will not deviate or jam during the sliding process.

[0033] A sliding seat 23 is fixedly installed at the lower end of the sliding block 22. A transverse slide rail 24 is assembled on the front and rear sides of the transverse slide groove 21 at the lower end of the base plate 1. The sliding seat 23 is slidably installed on the transverse slide rail 24. Through the cooperation between the transverse slide rail 24 and the sliding seat 23, the support stability and smoothness of the left and right sliding of the moving seat 3 are further improved, the upper clamping load is shared, the clamping accuracy deviation caused by long-term sliding wear is avoided, and the long-term high-precision reciprocating sliding operation of the moving clamping component is guaranteed.

[0034] The driving core of the fixture is a bidirectional lead screw 31 mounted on the lower end of the base plate 1. The bidirectional lead screw 31 extends in the front-to-back direction. Utilizing the reverse transmission characteristics of the left-hand threaded section and the right-hand threaded section of the bidirectional lead screw 31, lead screw sleeves 32 are mounted on the two threaded sections respectively. The front and rear sets of lead screw sleeves 32 are respectively connected to the front and rear sets of external support mechanisms, so as to realize that a single lead screw drives the two sets of external support mechanisms to move in opposite directions synchronously.

[0035] Each sliding seat 23 has a connecting rod 33 hinged to its lower end. The other end of the connecting rod 33 is correspondingly hinged and fixed to the lead screw sleeve 32, forming a hinged transmission structure between the lead screw sleeve 32 and the sliding seat 23. This structure can convert the forward and backward displacement of the lead screw sleeve 32 into the left and right linear sliding motion of the sliding seat 23 and the moving seat 3, thereby achieving stable power transmission and avoiding problems such as jamming and deformation under force in rigid transmission.

[0036] The end of the bidirectional lead screw 31 is provided with a hexagonal head 34, which can be rotated by clamping the hexagonal head 34 with tools such as wrenches. The bidirectional lead screw 31 can be easily driven to rotate in both directions manually without the need for complex power equipment, making the operation simple and convenient.

[0037] A sliding groove 41 extending in the front-to-back direction is opened at the lower end of the base plate 1 between the two sets of movable clamping components. The bidirectional lead screw 31 is arranged inside the sliding groove 41, and the lead screw sleeve 32 is limited and slidable within the sliding groove 41. The bidirectional lead screw 31 and the lead screw sleeve 32 are housed and slidably limited by the sliding groove 41, which effectively reduces the overall installation space and avoids dust accumulation and damage from bumps on the exposed lead screw transmission structure, thus ensuring the stability and service life of the transmission structure.

[0038] During operation, the hexagonal head 34 is rotated to drive the bidirectional lead screw 31 to rotate. The front and rear threads drive the two sets of lead screw sleeves 32 to move synchronously in opposite directions. The lead screw sleeves 32 push and pull each sliding seat 23 through the connecting rod 33, so that the sliding seat 23 slides synchronously left and right along the transverse slide rail 24 and the sliding block 22 slides synchronously along the transverse slide groove 21. Finally, the four sets of moving seats 3 and the movable clamping plate 4 are driven to clamp outward or loosen inward synchronously, realizing the precise and synchronous clamping operation of four stations driven by a single source of power.

[0039] See Figure 3 , Figure 4 , Figure 6 As shown, this structure has guide posts 51 spaced back and forth on the side of the movable clamping plate 4 near the movable seat 3. The guide posts 51 are movably inserted into the movable seat 3. Through the sliding engagement of the two sets of guide posts 51 with the holes of the movable seat 3, the left and right sliding movements of the movable clamping plate 4 are precisely guided, limiting the front and back offset and angular deflection of the movable clamping plate 4, and ensuring that the movable clamping plate 4 can only slide smoothly in the left and right direction. By controlling the sliding of the movable clamping plate 4 in the left and right direction to adjust the clamping distance, it can flexibly adapt to the clamping requirements of mold workpieces of different sizes and specifications, greatly improving the universality and adaptability of the fixture, while effectively improving the straightness and alignment accuracy of the position adjustment of the movable clamping plate 4, and ensuring the stability of clamping and positioning of workpieces of various specifications.

[0040] The fixing component of this structure uses bolt 52, which is assembled at the upper end of the movable seat 3. After the movable clamping plate 4 is slidably adjusted to a suitable clamping position via the guide post 51, tightening the bolt 52 will cause its lower end to press against the limiting guide post 51. The relative position of the guide post 51 and the movable seat 3 is locked by friction, thereby achieving rapid locking and fixing of the movable clamping plate 4. This prevents the movable clamping plate 4 from loosening or shifting during processing, ensuring the stability of workpiece clamping. Loosening the bolt 52 releases the limit, allowing for free readjustment of the extension distance of the movable clamping plate 4. Adjustment is convenient and locking is reliable.

[0041] A scale 61 is provided on the upper end of the movable clamping plate 4, and a corresponding limiting groove 62 is provided on the upper end of the movable seat 3. The scale 61 slides within the limiting groove 62, and an indicator arrow 63 is provided on one side of the limiting groove 62. When fine-tuning the movable clamping plate 4 left and right, the scale 61 slides synchronously with the movable clamping plate 4. By using the indicator arrow 63 to correspond to the scale value of the scale 61, the adjustment stroke of the movable clamping plate 4 at each station can be read intuitively and accurately, realizing quantitative fine-tuning. This facilitates the operator to uniformly calibrate the clamping spacing of the four stations, ensuring the consistency of the clamping dimensions at each station. It effectively solves the problem of station deviation caused by manual adjustment based on experience, and significantly improves the batch clamping accuracy of multiple stations. At the same time, the limiting groove 62 can slide and limit the scale 61 to prevent scale deviation and ensure accurate and stable readings.

[0042] A rubber pad 71 is provided on the outer clamping end face of the movable clamping plate 4. During the workpiece clamping process, the rubber pad 71 directly contacts the surface of the mold workpiece. On the one hand, it can increase the friction coefficient of the clamping contact surface, improve the clamping tightness of the workpiece, and prevent the workpiece from slipping during processing. On the other hand, it can buffer the clamping impact force and avoid the movable clamping plate 4 made of metal directly and rigidly squeezing the workpiece. It effectively protects the workpiece clamping surface from indentation and scratches, improves the appearance quality of the workpiece and the yield of finished products, and can also adapt to the slightly irregular workpiece surface to improve the clamping fit effect.

[0043] See Figures 1-3 As shown, the positioning base 82 is detachably installed at both ends of the fixed clamping plate 2 using screws 81. The screws 81 enable quick assembly and disassembly of the positioning base 82. The core purpose of setting the positioning base 82 is to achieve precise workpiece positioning. During workpiece clamping, one side of the workpiece rests against the fixed clamping plate 2, while the end of the workpiece rests against the end face of the positioning base 82. This allows for simultaneous bidirectional limiting and fixing of the workpiece along the X and Y axes, effectively restricting horizontal displacement of the workpiece. The positioning datum is clear and regular, greatly facilitating precise tool setting during CNC milling, reducing tool setting errors, and improving machining accuracy. Meanwhile, the detachable structure has dual adaptability. When the positioning base 82 is retained, it can meet the requirements for precise positioning and clamping of conventional small workpieces. When the positioning base 82 is removed by screw 81, the fixture can eliminate the end limit space restriction and can use two movable clamping plates on the same side to clamp extra-long workpieces, effectively expanding the clamping range of the fixture and greatly improving the versatility and adaptability of the fixture. In addition, the positioning base 82 can be disassembled, maintained, and replaced separately without disassembling the entire fixture body, reducing equipment maintenance costs and repair difficulty.

[0044] Support frames 91 are installed at the four corners of the base plate 1. The four sets of support frames 91 work together to support and elevate the entire fixture, so that the transmission structure and sliding structure at the bottom of the base plate 1 are suspended in the air. This effectively avoids friction and collision between the bottom structure and the mounting platform, prevents debris and platform protrusions from interfering with the operation of the fixture transmission, and ensures the smooth operation of the bottom moving structure such as the two-way lead screw, slide rail, and connecting rod.

[0045] An L-shaped plate 92 is fixedly mounted at the lower end of the support frame 91. An installation groove 93 is formed on the L-shaped plate 92. Through the mating structure of the L-shaped plate 92 and the installation groove 93, the entire fixture can be quickly aligned and installed on the machine tool worktable or a designated machining station. The installation groove 93 can accommodate fixing bolts and positioning connectors of different specifications, offering strong installation versatility. Simultaneously, the four-point symmetrical installation structure ensures the horizontality and firmness of the fixture after installation, effectively preventing offset and vibration during machining, further improving the overall stability and machining accuracy of the workpiece.

[0046] Based on the accompanying drawings and the foregoing illustrations and descriptions, the basic principles and main features of the present invention, as well as its advantages, those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station combined machining fixture for molds, characterized in that: The device includes a base plate (1), with fixed clamping plates (2) provided at both the left and right ends of the base plate (1). Two external support mechanisms are provided between the two fixed clamping plates (2) at a distance from front to back. Each of the two external support mechanisms includes a movable clamping component that is spaced apart from left to right. The movable clamping component includes a movable seat (3), a movable clamping plate (4), and a fixing component. The movable seat (3) can slide in the left and right direction. The movable clamping plate (4) is slidably disposed on the outside of the movable seat (3) and fixed on the movable seat (3) by the fixing component. The movable clamping plate (4) cooperates with the fixed clamping plate (2) to clamp the workpiece. A driving device is also provided on the base plate (1). The driving device can drive the movable seats (3) on the left and right sides to move outward or inward synchronously.

2. The multi-station modular fixture for molding according to claim 1, wherein: A transverse sliding groove (21) is provided on the base plate (1) and below each of the movable seats (3). A sliding block (22) that slides in the transverse sliding groove (21) is provided at the lower end of each of the movable seats (3). A sliding seat (23) is provided at the lower end of the sliding block (22). A transverse slide rail (24) is provided at the lower end of the base plate (1) and on both the front and rear sides of the transverse sliding groove (21). The sliding seat (23) slides on the transverse slide rail (24).

3. The multi-station modular fixture of claim 2, wherein: The driving device includes a bidirectional lead screw (31) rotatably mounted on the lower end of the base plate (1). The bidirectional lead screw (31) extends in the front-back direction. Lead screw sleeves (32) are provided on both the left-hand and right-hand sections of the bidirectional lead screw (31). The two lead screw sleeves (32) are respectively connected to the front and rear sets of external support mechanisms. A connecting rod (33) is hinged to the lower end of each sliding seat (23). The other end of the connecting rod (33) is hinged to the lead screw sleeve (32). A hexagonal head (34) is provided at one end of the bidirectional lead screw (31).

4. The multi-station modular fixture of claim 3, wherein: A sliding groove (41) is provided at the lower end of the base plate (1) and between the two movable clamping components. The sliding groove (41) extends in the front-back direction, and the bidirectional lead screw (31) is located in the sliding groove (41). The lead screw sleeve (32) slides in the sliding groove (41).

5. The multi-station modular fixture of claim 1, wherein: Guide posts (51) are provided at intervals on one side of the movable clamping plate (4) located on the movable seat (3). The guide posts (51) are movably inserted on the movable seat (3). The fixing component is a bolt (52). The bolt (52) is located at the upper end of the movable seat (3) and is used to press the guide posts (51).

6. The multi-station modular fixture of claim 1, wherein: A scale (61) is provided at the upper end of the movable clamping plate (4), and a limiting groove (62) is provided at the upper end of the movable seat (3). The scale (61) slides in the limiting groove (62), and an indicator arrow (63) is provided on one side of the limiting groove (62).

7. A multi-station combined machining fixture for molds according to claim 1, characterized in that: A rubber pad (71) is provided on the outside of the movable clamping plate (4).

8. The multi-station modular fixture of claim 1, wherein: Positioning bases (82) are detachably installed at both ends of the fixed clamping plate (2) by screws (81).

9. The multi-station modular fixture of claim 1, wherein: Support frames (91) are provided at all four corners of the base plate (1), and L-shaped plates (92) are provided at the lower end of the support frames (91). Mounting grooves (93) are provided on the L-shaped plates (92).

Images