Radar clamp capable of automatically clamping parts

Abstract

The utility model relates to the technical field of millimeter wave radar processing equipment, in particular to a radar clamp capable of automatically clamping parts, which comprises a frame and a workpiece clamp. The workpiece clamp is arranged on the transmission belt and is in transmission along with the transmission belt in the length direction of the machine frame, the workpiece clamp comprises a shell, a storage cavity used for containing workpieces is formed in the shell, and at least two sets of perpendicular clamping arms are arranged in the storage cavity. According to the utility model, the plurality of workpiece fixtures are arranged and placed on the transmission belt, and the rotatable clamping blocks in the fixtures are utilized to extrude and fix workpieces, so that the whole structure is simple, and automatic operation can be realized; the multiple material returning rods capable of vertically ascending and descending are arranged on the shell, the clamping state can be relieved after a workpiece is machined, meanwhile, the material returning rods can synchronously ascend to jack up the workpiece, material stripping is facilitated, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of millimeter wave radar processing equipment, in particular to a radar fixture for automatically clamping parts. Background Art

[0002] At present, the general practice in the automotive millimeter-wave radar industry is that the assembly production lines are non-automated production lines, and most of them are semi-automated production lines. During assembly, tooling that adapts to the product appearance is used to fix parts. At the same time, commonly used materials are nylon boards, bakelite and other materials.

[0003] The prior art discloses a utility model patent with announcement number CN203254326U and patent name "A clamping device for radome installation and positioning". The patent discloses a scale rail, a positioning bolt, a lead screw bearing, a workpiece mounting plate, a fine-tuning mechanism slot, a lead screw, a workpiece clamping column, a lead screw nut, and a side baffle. One end of the scale rail is fixed to the turntable by bolts. The fine-tuning mechanism slot is fixed to the other end of the scale rail with a positioning bolt. Positioning holes are evenly arranged on the scale rail, and the side baffle is fixed to both sides of the fine-tuning mechanism slot with bolts. One end of the lead screw bearing rests on the shoulder of the lead screw, and the other end is clamped by a side baffle column. The lead screw nut is sleeved on the lead screw. The lead screw nut is connected to the workpiece clamping column by a thread. The workpiece mounting plate is connected to the side of the fine-tuning mechanism slot by bolts. This solution does not require the replacement of tooling fixtures according to different workpieces, which reduces labor intensity and improves work efficiency.

[0004] However, although the above solution can achieve a fixing effect by fixing multiple sets of lead screw nuts arranged circumferentially, it can only fix one workpiece at a time, is not suitable for assembly line operations, and has low production efficiency.

[0005] Therefore, a radar fixture for automatically clamping parts is proposed to solve the above-mentioned problems. Utility Model Content

[0006] Technical issues solved

[0007] In view of the above-mentioned shortcomings of the prior art, the utility model provides a radar fixture for automatically clamping parts, which can effectively solve the problem that the radar fixture in the prior art has a complicated structure and is not suitable for assembly line operation.

[0008] Technical Solution

[0009] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] The utility model provides a radar fixture for automatically clamping parts, comprising a frame and a workpiece fixture, wherein the frame is provided with a transmission belt; the workpiece fixture is arranged on the transmission belt and is transmitted along the length direction of the frame with the transmission belt, and the workpiece fixture comprises a shell, a storage cavity for placing the workpiece is opened on the shell, and at least two groups of perpendicular clamping arms are arranged in the storage cavity; wherein each group of clamping arms respectively comprises two rotatable clamping blocks, the two clamping blocks are arranged in an eight-shaped shape, and when the two clamping blocks rotate toward the middle of the storage cavity, the two groups of clamping arms simultaneously cling to the side faces of the workpiece stored in the storage cavity.

[0011] Furthermore, the clamping arm includes a shaft rod and a shaft cap, the shaft rod is vertically arranged in the storage cavity; the shaft cap is elastically hinged on the shaft rod; wherein the clamping block is vertically fixed to the outer end surface of the shaft cap through a first connecting plate, and two adjacent first connecting plates are arranged in an eight-shaped shape.

[0012] Furthermore, a second connecting plate is vertically arranged on the outer end surface of the shaft cap, and the two second connecting plates on adjacent shaft caps are in an inverted eight shape; wherein, a driving plate that can move toward the middle of the two second connecting plates is also arranged in the storage cavity, and the end surfaces of the two second connecting plates are located on the moving path on both sides of the driving plate.

[0013] Furthermore, the driving plate is elastically movable on the shell and can move linearly toward the middle of the storage cavity.

[0014] Furthermore, a resistance block which can be vertically lifted and lowered on the shell is provided on the rear side of the driving plate, the resistance block is always in resistance with the driving plate, and the end surface of the resistance block facing the driving plate is a slope inclined from top to bottom.

[0015] Furthermore, a roller rolling on the end surface of the second connecting plate is respectively provided on both sides of the driving plate.

[0016] Furthermore, a limiting plate is vertically provided at one end of the second connecting plate close to the adjacent second connecting plate, and the length of the limiting plate is greater than the diameter of the roller.

[0017] Furthermore, a plurality of ejector rods that can be lifted vertically are vertically disposed on the shell body, and the ejector rods are located in the storage cavity and are used to eject the workpieces in the storage cavity.

[0018] Furthermore, the ejector rod and the abutment block are both fixed on a panel arranged at the lower end of the shell.

[0019] Furthermore, a pressure plate which is always in contact with the upper end of the abutment block is arranged on the frame along its length direction, and a first protrusion which is concave upward and a second protrusion which is convex downward are arranged at intervals on one end of the pressure plate which faces the abutment block.

[0020] Beneficial Effects

[0021] Compared with the known prior art, the technical solution provided by the utility model has the following beneficial effects:

[0022] The utility model provides a plurality of workpiece clamps and places the workpiece clamps on a transmission belt, and utilizes a rotatable clamping block in the clamp to achieve extrusion and fixation of the workpiece. The overall structure is simple and can realize automated operation.

[0023] By arranging a plurality of vertically liftable ejector rods on the housing, not only can the clamping state of the workpiece be released after processing, but the workpiece can also be lifted up synchronously to facilitate material removal and improve processing efficiency;

[0024] By setting a pressing plate and setting an undulating height change on the pressing plate, the movement of the material ejection rod and the clamping structure can be controlled without the need for an additional driving mechanism, reducing the station settings and simplifying the fixing procedure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a schematic diagram of the main structure of the tooling in the embodiment of the utility model;

[0027] Figure 2 In the embodiment of the utility model Figure 1 Schematic diagram of the structure at A in the middle;

[0028] Figure 3 In the embodiment of the utility model Figure 1 Schematic diagram of the structure at B in the middle;

[0029] Figure 4 This is a schematic diagram of the partial structure of the workpiece fixture in the embodiment of the utility model;

[0030] Figure 5 This is a schematic diagram of the exploded structure of the panel and the shell in the embodiment of the utility model;

[0031] Figure 6 This is a schematic diagram of the top view of the workpiece fixture in the embodiment of the utility model;

[0032] Figure 7 It is a schematic diagram of the workpiece clamp structure in an embodiment of the utility model.

[0033] The numbers in the figure represent: 1. frame; 10. transmission belt; 11. pressure plate; 111. first protrusion; 112. second protrusion; 2. workpiece fixture; 21. shell; 211. storage chamber; 212. drive plate; 213. resistance block; 214. roller; 215. panel; 216. slide rod; 217. return spring; 218. ejector rod; 3. clamping arm; 31. clamping block; 311. first connecting plate; 312. second connecting plate; 313. limit plate; 32. shaft rod; 33. shaft cap. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] The utility model is further described below in conjunction with embodiments.

[0039] Example:

[0040] This solution provides a radar fixture that automatically clamps parts. Figure 1-7 , mainly including two parts, a frame 1 and a workpiece fixture 2. A transmission belt 10 is arranged on the frame 1, and a plurality of storage spaces are arranged on the transmission belt 10. In this case, only three are shown, and the workpiece fixture 2 is arranged on the transmission belt 10 and is transmitted along the length direction of the frame 1.

[0041] When in use, first place the workpiece fixture 2 in the storage space. At this time, there is no workpiece fixed in the workpiece fixture 2. The workpiece will be clamped by a robot at one of the workstations and sent into the workpiece fixture 2. The self-locking function of the workpiece fixture 2 is used to fix the workpiece.

[0042] Specifically, the workpiece clamp 2 includes a shell 21, which is provided with a storage cavity 211 for placing the workpiece. At least two groups of perpendicular clamping arms 3 are arranged in the storage cavity 211. The two groups of clamping arms 3 are respectively located in the shell 21 in the horizontal and longitudinal directions. Each group of clamping arms 3 includes two rotatable clamping blocks 31, and the two clamping blocks 31 are arranged in an eight-shape. When the two clamping blocks 31 rotate toward the middle of the storage cavity 211, the two groups of clamping arms 3 are simultaneously pressed against the side of the workpiece stored in the storage cavity 211.

[0043] In order to avoid damaging the side end surface of the workpiece, the clamping block 31 adopts a soft rubber structure.

[0044] The clamping arm 3 also includes a shaft rod 32 and a shaft cap 33. The shaft rod 32 is vertically arranged in the storage cavity 211. A torsion spring is arranged between the shaft rod 32 and the shaft cap 33, so that the shaft cap 33 is elastically hinged on the shaft rod 32, and the clamping block 31 is vertically fixed on the outer end surface of the shaft cap 33 through the first connecting plate 311. The two adjacent first connecting plates 311 are arranged in an eight-shape.

[0045] When placing the workpiece, the distance between the two clamping blocks 31 is the shortest, and the workpiece cannot be placed in the storage cavity 211. When the two shaft caps 33 begin to rotate back to back, the torsion spring begins to accumulate a certain amount of elastic potential energy, and the distance between the two clamping blocks 31 gradually increases, thereby gradually increasing the area between the two sets of perpendicular clamping arms 3 for placing the workpiece. At this time, the workpiece is placed inside the area.

[0046] Then the distance between the two clamping blocks 31 decreases, that is, the distance between the two clamping blocks 31 gradually shrinks, and the two clamping blocks 31 begin to contact the side end surface of the workpiece and gradually clamp to lock the workpiece. In this state, the workpiece can be assembled, welded, and other processes can be performed.

[0047] After processing, the workpiece is removed from the workpiece holder 2 .

[0048] At the same time, the present invention also has a material ejection mechanism, that is, when removing the material, it can assist in ejecting the workpiece from the workpiece fixture 2, so as to facilitate the transfer of the processed workpiece.

[0049] Specifically, a plurality of vertically liftable ejector rods 218 are vertically provided on the shell 21 in the present case. The ejector rods 218 are located in the storage cavity 211 and are used to eject the workpiece in the storage cavity 211. A through hole is provided in the storage cavity 211 for the ejector rods 218 to extend and retract therein.

[0050] In combination with the aforementioned process of loading, processing and withdrawing, the return rod 218 will also have a certain height fluctuation. First, during the loading process, the distance between the two clamping blocks 31 will gradually increase, and at this time the top end of the return rod 218 will gradually move downward from the top end surface exposed in the storage cavity 211 until the return rod 218 is immersed in the through hole.

[0051] After the workpiece is placed in the storage cavity 211, the current workpiece fixture 2 continues to be transmitted with the transmission belt 10. In the process of reaching the processing station, the distance between the two clamping blocks 31 will be slightly reduced, and the ejector rod 218 will also rise in height to a certain extent, but will not exceed the perforation.

[0052] When the workpiece is processed, it continues to be transmitted and reaches the material-returning station. At this time, the material-returning rod 218 rises, passes through the perforation, lifts the workpiece, and realizes material return.

[0053] Specifically, in this case, a second connecting plate 312 is vertically arranged on the outer end surface of the shaft cap 33, and the two second connecting plates 312 on adjacent shaft caps 33 are in an inverted eight shape. A driving plate 212 that can move toward the middle of the two second connecting plates 312 is also arranged in the storage cavity 211, and the end surfaces of the two second connecting plates 312 are located on the moving path on both sides of the driving plate 212.

[0054] The driving plate 212 is elastically movable on the shell 21 and can move linearly toward the middle of the storage chamber 211. A slide rod 216 is connected to the rear side of the driving plate 212. A return spring 217 is sleeved on the outer side of the slide rod 216. A guide seat for the slide rod 216 to slide inside is provided on the shell 1. The return spring 217 is provided between the round block at the end of the slide rod 216 and the guide seat, so that when the driving plate 212 moves toward the middle of the storage chamber 211, the return spring 217 will be compressed.

[0055] A resistance block 213 which can be vertically raised and lowered on the shell 21 is provided on the rear side of the driving plate 212. The resistance block 213 is always in resistance with the driving plate 212, and its end face facing the driving plate 212 is a slope inclined from top to bottom. Therefore, when the resistance block 213 moves downward, it will gradually push the driving plate 212 toward the workpiece, thereby realizing the opening of the two clamping blocks 31, and at this time, the torsion spring force on the shaft cap 33 will gradually increase.

[0056] During the material withdrawal stage, as the resistance block 213 gradually rises, the driving plate 212 will gradually move toward the side away from the workpiece, and the driving plate 212 no longer restricts the rotation of the second connecting plate 312. The distance between the two clamping blocks 31 is reduced, but because the driving plate 212 does not squeeze the second connecting plate 312 at this time, the rising force of the material withdrawal rod 218 at the bottom of the workpiece is sufficient to lift the workpiece.

[0057] In this case, in order to reduce friction, a roller 214 rolling on the end surface of the second connecting plate 312 is provided on both sides of the driving plate 212. In this case, the roller 214 is elastically hinged on both sides of the driving plate 212. The hinge structure is a well-known technology and is not specifically limited here and is not shown in the accompanying drawings.

[0058] In order to prevent the driving plate 212 from moving too far toward one side of the workpiece, a limiting plate 313 is vertically provided at one end of the second connecting plate 312 close to the adjacent second connecting plate 312 , and the length of the limiting plate 313 is greater than the diameter of the roller 214 .

[0059] In this case, the material return rod 218 and the resistance block 213 are both fixed on a panel 215 arranged at the lower end of the shell 21, that is, when the resistance block 213 rises / falls, it will synchronously drive the material return rod 218 to move.

[0060] It is worth noting that in this case, an elastic structure is fixed between the panel 215 and the bottom end of the rack 1, and when the panel 215 moves downward, a certain amount of elastic potential energy will be accumulated.

[0061] As for the rising / falling method of the control panel 215, in this case, a method of limiting the upper end of the resistance block 213 is adopted. A pressure plate 11 is provided on the frame 1 along its length direction and is always in contact with the upper end of the resistance block 213. The pressure plate 11 is provided with a first protrusion 111 concave upward and a second protrusion 112 protruding downward at one end facing the resistance block 213. When the resistance block 213 contacts the second protrusion 112, it moves downward (loading stage). When the resistance block 213 moves to the first protrusion 111, the elastic potential energy is released. The elastic potential energy at this point includes the potential energy of the elastic structure on the driving plate 212 and the elastic potential energy between the panel 215 and the frame 1. When the elastic potential energy is released, the resistance block 213, the panel 215 and the ejector rod 218 rise synchronously.

[0062] In this case, the entire shell 21 used to place the workpiece is made of metal, which is more wear-resistant and less prone to damage than conventional nylon plates or bakelite materials, and has a longer service life. At the same time, compared with conventional materials, metal materials have high dimensional accuracy through machining, more precise product positioning, and higher assembly accuracy.

[0063] It should also be noted that in the present case, a traceability sensor is provided at the lower end of each workpiece fixture 2, so as to track the specific position of the parts during processing on the production line, and ensure that the respective assembly tasks are completed at each workstation. If any problems occur during installation, the corresponding products will also be tracked through the traceability device.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A radar fixture for automatically clamping parts, characterized in that: include: A frame (1), wherein a transmission belt (10) is arranged on the frame (1); A workpiece clamp (2), the workpiece clamp (2) being arranged on a transmission belt (10) and being driven along the length direction of a frame (1), the workpiece clamp (2) comprising a housing (21), the housing (21) being provided with a storage cavity (211) for placing a workpiece, and at least two groups of perpendicular clamping arms (3) being arranged in the storage cavity (211); Each set of clamping arms (3) comprises two rotatable clamping blocks (31), the two clamping blocks (31) are arranged in an eight-shaped shape, and when the two clamping blocks (31) rotate toward the middle of the storage cavity (211), the two sets of clamping arms (3) simultaneously cling to the side surfaces of the workpiece stored in the storage cavity (211).

2. A radar fixture for automatically clamping parts according to claim 1, characterized in that: The clamping arm (3) comprises: A shaft rod (32), wherein the shaft rod (32) is vertically arranged in the storage cavity (211); A shaft cap (33), wherein the shaft cap (33) is elastically hinged on the shaft rod (32); The clamping block (31) is vertically fixed on the outer end surface of the shaft cap (33) via a first connecting plate (311), and two adjacent first connecting plates (311) are arranged in an eight-shaped shape.

3. A radar fixture for automatically clamping parts according to claim 2, characterized in that: A second connecting plate (312) is also vertically arranged on the outer end surface of the shaft cap (33), and the two second connecting plates (312) on adjacent shaft caps (33) are in an inverted eight shape; A driving plate (212) movable toward the middle of the two second connecting plates (312) is also provided in the storage cavity (211), and the end surfaces of the two second connecting plates (312) are located on the moving path on both sides of the driving plate (212).

4. A radar fixture for automatically clamping parts according to claim 3, characterized in that: The driving plate (212) is elastically movable on the housing (21) and can move linearly toward the middle of the storage cavity (211).

5. A radar fixture for automatically clamping parts according to claim 4, characterized in that: A resisting block (213) which can be lifted and lowered vertically on the housing (21) is disposed on the rear side of the driving plate (212); the resisting block (213) is always in contact with the driving plate (212), and its end surface on one side facing the driving plate (212) is an inclined surface inclined from top to bottom.

6. A radar fixture for automatically clamping parts according to claim 5, characterized in that: A roller (214) rolling on the end surface of the second connecting plate (312) is respectively provided on both sides of the driving plate (212).

7. A radar fixture for automatically clamping parts according to claim 6, characterized in that: A limiting plate (313) is vertically provided at one end of the second connecting plate (312) close to the adjacent second connecting plate (312), and the length of the limiting plate (313) is greater than the diameter of the roller (214).

8. A radar fixture for automatically clamping parts according to claim 7, characterized in that: A plurality of ejector rods (218) that can be lifted vertically are vertically disposed on the housing (21); the ejector rods (218) are located in the storage cavity (211) and are used to eject the workpiece in the storage cavity (211).

9. A radar fixture for automatically clamping parts according to claim 8, characterized in that: The material ejection rod (218) and the abutment block (213) are both fixed on a panel (215) disposed at the lower end of the housing (21).

10. A radar fixture for automatically clamping parts according to claim 9, characterized in that: The frame (1) is provided with a pressure plate (11) along its length direction and always in contact with the upper end of the abutment block (213); an end of the pressure plate (11) facing the abutment block (213) is provided with a first protrusion (111) that is concave upward and a second protrusion (112) that is protruding downward at intervals.

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