Material taking and placing device

Abstract

The utility model provides a material taking and placing device which comprises a base comprising a first face and a second face which are opposite to each other. The clamping assembly comprises a plurality of clamping finger pairs, each clamping finger pair comprises a first clamping finger and a second clamping finger, the first clamping finger and the second clamping finger both penetrate through the base and extend out of the second face, the first clamping finger is provided with a first clamping protrusion facing the second clamping finger corresponding to the first clamping finger, the second clamping finger is provided with a second clamping protrusion corresponding to the first clamping protrusion, and the first clamping protrusion and the second clamping protrusion correspond to each other. The first clamping protrusion and the second clamping protrusion are used for clamping a workpiece when getting close to each other. The driving assembly is arranged on the second face of the base, connected with the clamping assembly and used for driving the first clamping finger and the second clamping finger to be close to each other or away from each other. The material taking and placing device can synchronously clamp a plurality of workpieces, and material taking and placing are convenient.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical automated processing, and in particular to a material taking and placing device. Background Art

[0002] Injection molding is a common method for producing industrial products, especially for producing special-shaped workpieces. In the injection molding production of small products, multiple small products are usually injection molded at the same time, and these small products are connected to the sprue. When taking out these small products, it is usually necessary to use a clamping device to clamp the sprue so that multiple small products can be taken out together. However, this production method requires an additional separation process after taking out the product to separate the multiple small products from the sprue, which increases the operation time and production costs.

[0003] In order to solve this problem, the current solution is to add a cutting mechanism in the injection mold so that the multiple small products can be directly cut and separated from the slug after injection molding, thereby eliminating the separation process. However, how to remove the multiple small products from the mold is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] In view of the above, it is necessary to propose a material taking and placing device that can synchronously clamp multiple workpieces and facilitate material taking and placing.

[0005] An embodiment of the present application provides a material picking and placing device for picking and placing workpieces, comprising: a base having a first surface and a second surface relative to each other; a clamping assembly, the clamping assembly comprising a first pull rod, a second pull rod, a plurality of first connecting rods, a plurality of second connecting rods and a plurality of clamping finger pairs, the plurality of first connecting rods and the plurality of second connecting rods are arranged in a one-to-one correspondence and are all slidably connected to the first surface of the base, the first pull rod is connected to the plurality of first connecting rods, the second pull rod is connected to the plurality of second connecting rods, the plurality of clamping finger pairs each include a first clamping finger and a second clamping finger, the plurality of first clamping fingers are all connected to the first connecting rod and extend out of the second surface of the base, the plurality of second clamping fingers are all connected to the second connecting rod and extend out of the second surface of the base, and the plurality of first clamping fingers and the plurality of second clamping fingers are arranged in a one-to-one correspondence; and a driving assembly, which is arranged on the second surface of the base and connected to the clamping assembly, and is used to drive the first clamping fingers and the second clamping fingers to move closer to or away from each other.

[0006] A driving assembly is arranged on the base of the above-mentioned material picking and placing device. The driving assembly drives the movement of the plurality of first connecting rods through the first pull rod. The driving assembly also drives the movement of the plurality of second connecting rods through the second pull rod, thereby making the plurality of first clamping fingers on the first connecting rod and the plurality of second clamping fingers on the second connecting rod approach or move away from each other, thereby realizing the function of synchronously clamping or releasing the plurality of workpieces. The plurality of first connecting rods and the plurality of second connecting rods are all slidably arranged on the base, and the positions of the first connecting rods and the second connecting rods can be limited by the base, thereby limiting the positions of the first clamping fingers and the second clamping fingers, thereby improving the accuracy when clamping the workpiece. The above-mentioned material picking and placing device can clamp a plurality of workpieces at the same time, with high clamping accuracy and convenient picking and placing.

[0007] In some embodiments, the first clamping finger is provided with a first clamping protrusion facing its corresponding second clamping finger, and the second clamping finger is provided with a second clamping protrusion corresponding to the first clamping protrusion, and the first clamping protrusion and the second clamping protrusion are used to clamp the workpiece when they are close to each other.

[0008] In some embodiments, a plurality of limit blocks are provided on the second surface of the base, and the plurality of limit blocks are respectively provided corresponding to the plurality of clamping finger pairs, and a gap for accommodating the workpiece is provided between the limit blocks and the corresponding first clamping fingers and second clamping fingers, and the limit blocks are used to cooperate with the first clamping fingers and the second clamping fingers to clamp the workpiece.

[0009] In some embodiments, the first connecting rod is provided with a plurality of first grooves for accommodating the first clamping fingers, the cross-section of the first groove is square, the cross-section of one end of the first clamping finger arranged in the first groove is square, and the first groove is used to limit the first clamping finger; the second connecting rod is provided with a plurality of second grooves for accommodating the second clamping fingers, the cross-section of the second groove is square, the cross-section of one end of the second clamping finger arranged in the second groove is square, and the second groove is used to limit the second clamping finger.

[0010] In some embodiments, a first avoidance groove is provided at one end of the first clamping finger away from the first connecting rod, and a second avoidance groove is provided at one end of the second clamping finger away from the second connecting rod.

[0011] In some embodiments, a plurality of limit sleeves are provided on the first surface of the base, and the plurality of limit sleeves are respectively sleeved on the first connecting rod and the second connecting rod for limiting the first connecting rod and the second connecting rod; a first limit protrusion is provided on the first connecting rod, and the first limit protrusion is arranged adjacent to the limit sleeve connected to the first connecting rod, and is used to abut against the limit sleeve when the first connecting rod moves, so as to limit the first connecting rod; a second limit protrusion is provided on the second connecting rod, and the second limit protrusion is arranged adjacent to the limit sleeve connected to the second connecting rod, and is used to abut against the limit sleeve when the second connecting rod moves, so as to limit the second connecting rod.

[0012] In some embodiments, a plurality of positioning posts are disposed on the second surface of the base, and the plurality of positioning posts are used to be inserted into an external device to position the base when taking or placing materials.

[0013] In some embodiments, the positioning column includes a positioning portion and a stop portion, the stop portion is connected to the base, and the cross-sectional area of ​​the stop portion is larger than the cross-sectional area of ​​the positioning portion, the positioning portion is used to be inserted into the external device to position the base, and the stop portion is used to abut the external device to limit the distance between the base and the external device.

[0014] In some embodiments, the driving assembly further includes a first driving member and a second driving member disposed on the first surface of the base, the first driving member being connected to the first pull rod, and the second driving member being connected to the second pull rod.

[0015] In some embodiments, a first connecting block is provided at the output end of the first driving member, the first pull rod is provided with a first slot matched with the first connecting block, the first connecting block is arranged in the first slot, and the cross-sectional area of ​​the first slot is not less than the cross-sectional area of ​​the first connecting block; a second connecting block is provided at the output end of the second driving member, the second pull rod is provided with a second slot matched with the second connecting block, the second connecting block is arranged in the second slot, and the cross-sectional area of ​​the second slot is not less than the cross-sectional area of ​​the second connecting block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a material picking and placing device, a mold and a clamping device provided in some embodiments of the present application.

[0017] Figure 2 for Figure 1 An enlarged structural schematic diagram of position II in the mold is shown.

[0018] Figure 3 for Figure 1The structural schematic diagram of the material picking and placing device is shown.

[0019] Figure 4 for Figure 3 Another schematic structural diagram of the material picking and placing device is shown.

[0020] Figure 5 for Figure 4 A schematic structural diagram of the clamping assembly in the material picking and placing device is shown.

[0021] Figure 6 for Figure 2 The diagram shown is a schematic diagram of the structure of the clamping fingers when clamping a workpiece.

[0022] Figure 7 for Figure 6 The figure shows a schematic diagram of the cross-sectional structure of the clamping fingers and the workpiece along line Ⅶ-Ⅶ.

[0023] Main component symbols

[0024] Material taking and placing device 100

[0025] Base 10

[0026] First side 11

[0027] Second side 12

[0028] Limit block 13

[0029] Gap 14

[0030] Limit sleeve 15

[0031] Positioning column 16

[0032] Positioning portion 161

[0033] Stopper 162

[0034] Clamping assembly 20

[0035] First tie rod 21

[0036] First card slot 211

[0037] Second tie rod 22

[0038] Second card slot 221

[0039] First connecting rod 23

[0040] The first groove 231

[0041] The first limiting protrusion 232

[0042] Second connecting rod 24

[0043] The second groove 241

[0044] The second limiting protrusion 242

[0045] Finger Pair 25

[0046] First clamp finger 251

[0047] The first clamping protrusion 2511

[0048] The first avoidance slot 2512

[0049] Second clamping finger 252

[0050] The second clamping protrusion 2521

[0051] The second avoidance groove 2522

[0052] Drive assembly 30

[0053] The first driving member 31

[0054] First connection block 311

[0055] The second driving member 32

[0056] The second connection block 321

[0057] Ejector 40

[0058] Air extraction hole 41

[0059] Workpiece 200

[0060] Material head 300

[0061] Mould 400

[0062] Positioning hole 401

[0063] Clamping device 500 DETAILED DESCRIPTION

[0064] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0065] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, in the description of the present application, it should be noted that the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0066] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" 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, an electrical connection, or mutual communication, it can be a direct connection, or it can be indirectly connected 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 this application can be understood according to the specific circumstances. Some embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0067] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0068] See also Figure 1 The present application provides a material handling device 100 for handling a workpiece 200 , which may be a special-shaped workpiece. The material handling device 100 includes a base 10 , a clamping assembly 20 and a driving assembly 30 .

[0069] See also Figure 1 and Figure 2 , this application takes multiple injection-molded workpieces 200 as an example for explanation. After the workpieces 200 are injection-molded in the mold 400, they are separated from the slug 300. The slug 300 can be moved out of the mold 400 using an external clamping device 500. The workpieces 200 are moved out of the mold 400 by the material taking and unloading device 100. The external clamping device 500 and the material taking and unloading device 100 provided by this application can take materials synchronously or successively, which is not limited here. It can be understood that the above examples are not intended to limit this application.

[0070] Specifically, see Figure 1 , Figure 3 and Figure 4 The base 10 has a first surface 11 and a second surface 12 opposite to each other. The base 10 may be a plate-like structure to improve the support stability of the clamping assembly 20 and the driving assembly 30. The base 10 may have necessary grooves, holes and other structures inside to avoid the clamping assembly 20 or other structures.

[0071] The clamping assembly 20 includes a first tie rod 21, a second tie rod 22, a plurality of first connecting rods 23, a plurality of second connecting rods 24, and a plurality of clamping finger pairs 25. The plurality of first connecting rods 23 and the plurality of second connecting rods 24 are arranged in a one-to-one correspondence and are all slidably connected to the first surface 11 of the base 10. The first tie rod 21 is connected to the plurality of first connecting rods 23, the second tie rod 22 is connected to the plurality of second connecting rods 24, and the plurality of clamping finger pairs 25 each include a first clamping finger 251 and a second clamping finger 252. The plurality of first clamping fingers 251 are all connected to the first connecting rod 23 and extend out of the second surface 12 of the base 10, and the plurality of second clamping fingers 252 are all connected to the second connecting rod 24 and extend out of the second surface 12 of the base 10, and the plurality of first clamping fingers 251 and the plurality of second clamping fingers 252 are arranged in a one-to-one correspondence. The first tie rod 21 and the second tie rod 22 can be arranged along the following lines: Figure 1 As shown in the X-axis arrangement, the first connecting rod 23 can be provided with two, three, four, etc., and the second connecting rod 24 can be provided with two, three, four, etc., and the number of the first connecting rod 23 and the second connecting rod 24 is consistent. The specific number of the first connecting rod 23 and the connection position with the first tie rod 21 can be set according to actual needs, and the specific number of the second connecting rod 24 and the connection position with the second tie rod 22 can be set according to actual needs, and are not limited here. The first connecting rod 23 and the second connecting rod 24 can be arranged along the following X-axis arrangement: Figure 1 The Y-axis direction is shown, and the first connecting rod 23 and the second connecting rod 24 may be staggered with tooth structures, so that the first clamping finger 251 connected to the first connecting rod 23 and the second clamping finger 252 connected to the second connecting rod 24 are close to each other to clamp the workpiece 200. The number of the clamping finger pairs 25 can be set to four, eight, sixteen, etc. The specific number and the connection position of the first clamping finger 251 and the first connecting rod 23, and the connection position of the second clamping finger 252 and the second connecting rod 24 in each clamping finger pair 25 can be set according to actual needs and are not limited here.

[0072] The driving assembly 30 is disposed on the second surface 12 of the base 10 and connected to the clamping assembly 20 , and is used for driving the first clamping finger 251 and the second clamping finger 252 to move closer to or farther from each other.

[0073] The material picking and placing device 100 provided in the embodiment of the present application has a driving assembly 30 disposed on the base 10. The driving assembly 30 drives the movement of the plurality of first connecting rods 23 through the first pull rod 21. The driving assembly 30 also drives the movement of the plurality of second connecting rods 24 through the second pull rod 22, thereby making the plurality of first clamping fingers 251 on the first connecting rod 23 and the plurality of second clamping fingers 252 on the second connecting rod 24 approach or move away from each other, thereby realizing the function of synchronously clamping or releasing the plurality of workpieces 200. The plurality of first connecting rods 23 and the plurality of second connecting rods 24 are all slidably disposed on the base 10, and the positions of the first connecting rods 23 and the second connecting rods 24 can be limited by the base 10, thereby limiting the positions of the first clamping fingers 251 and the second clamping fingers 252, thereby improving the accuracy of clamping the workpiece 200. The material picking and placing device 100 provided in the embodiment of the present application can clamp a plurality of workpieces 200 at the same time, with high clamping accuracy and convenient picking and placing.

[0074] See also Figure 4 , Figure 5 and Figure 6 In some embodiments, the first clamping finger 251 is provided with a first clamping protrusion 2511 facing its corresponding second clamping finger 252, and the second clamping finger 252 is provided with a second clamping protrusion 2521 corresponding to the first clamping protrusion 2511, and the first clamping protrusion 2511 and the second clamping protrusion 2521 are used to carry the workpiece 200 when they are close to each other.

[0075] When clamping the workpiece 200, the first clamping finger 251 and the second clamping finger 252 are separated from each other, and the base 10 is placed on the mold 400. At this time, the first clamping protrusion 2511 and the second clamping protrusion 2521 are located at the lower side of the clamped position of the workpiece 200. Then, the first clamping finger 251 and the second clamping finger 252 are driven to approach each other by the driving component 30. At this time, the first clamping protrusion 2511 and the second clamping protrusion 2521 are close to each other, and may or may not abut, so that the first clamping protrusion 2511 and the second clamping protrusion 2521 can carry the workpiece 200. Then, the base 10 is moved away from the mold 400, and the material is taken. The base 10 is placed in the material receiving position, and the first clamping finger 251 and the second clamping finger 252 are driven to move away from each other by the driving component 30 to complete the material discharge. By providing the first clamping protrusion 2511 and the second clamping protrusion 2521 , it is possible to avoid the first clamping finger 251 and the second clamping finger 252 directly clamping the workpiece 200 , thereby reducing the risk of clamping and damaging the workpiece 200 .

[0076] See also Figure 4 , Figure 6 and Figure 7In some embodiments, the second surface 12 of the base 10 is provided with a plurality of limit blocks 13, and the plurality of limit blocks 13 are respectively provided corresponding to the plurality of clamping finger pairs 25, and a gap 14 for accommodating the workpiece 200 is provided between the limit blocks 13 and the corresponding first clamping finger 251 and the second clamping finger 252, and the limit blocks 13 are used to cooperate with the first clamping finger 251 and the second clamping finger 252 to clamp the workpiece 200. The number of limit blocks 13 can be four, eight, or sixteen, and the number is consistent with the number of the clamping finger pairs 25, and the positions are corresponding to the clamping finger pairs 25. Before clamping the workpiece 200, the first clamping finger 251 and the second clamping finger 252 are separated from each other, and the base 10 is placed on the mold 400. At this time, the upper part of the workpiece 200 is located between the first clamping finger 251 and the second clamping finger 252, and the side of the workpiece 200 is located in the gap 14 between the first clamping finger 251, the second clamping finger 252 and the limit blocks 13. When clamping the workpiece 200, the first clamping finger 251 and the second clamping finger 252 approach each other so that the first clamping protrusion 2511 and the second clamping protrusion 2521 support the upper part of the workpiece 200, and the limit block 13 abuts against the side of the workpiece 200 to prevent the workpiece 200 from slipping when removing the material.

[0077] See also Figure 1 and Figure 5 In some embodiments, the first connecting rod 23 is provided with a plurality of first grooves 231 for accommodating the first clamping finger 251, the cross section of the first groove 231 is square, the cross section of one end of the first clamping finger 251 disposed in the first groove 231 is square, and the first groove 231 is used to limit the first clamping finger 251. In this way, the stability of the connection between the first clamping finger 251 and the first connecting rod 23 can be improved, and the first clamping finger 251 can be prevented from rotating during use, resulting in the inability to cooperate with the second clamping finger 252 to clamp the workpiece 200. The second connecting rod 24 is provided with a plurality of second grooves 241 for accommodating the second clamping finger 252, the cross section of the second groove 241 is square, the cross section of one end of the second clamping finger 252 disposed in the second groove 241 is square, and the second groove 241 is used to limit the second clamping finger 252. In this way, the stability of the connection between the second clamping finger 252 and the second connecting rod 24 can be improved, and the second clamping finger 252 can be prevented from rotating during use, resulting in the inability to cooperate with the first clamping finger 251 to clamp the workpiece 200.

[0078] See also Figure 1 and Figure 5 In some embodiments, a first avoidance groove 2512 is provided at one end of the first clamping finger 251 away from the first connecting rod 23, and a second avoidance groove 2522 is provided at one end of the second clamping finger 252 away from the second connecting rod 24. By providing the first avoidance groove 2522, the first clamping finger 251 and the second clamping finger 252 can avoid the mold 400 or other structures, so as to prevent the first clamping finger 251 and the second clamping finger 252 from being stuck in other structures and failing to clamp the workpiece 200.

[0079] See also Figure 3 In some embodiments, the first surface 11 of the base 10 is provided with a plurality of limiting sleeves 15, and the plurality of limiting sleeves 15 are respectively sleeved on the first connecting rod 23 and the second connecting rod 24, and are used to limit the first connecting rod 23 and the second connecting rod 24. The limiting sleeve 15 can be in a mouth shape or a door shape, and is fixedly connected to the base 10. The number of limiting sleeves 15 can be the same as the sum of the number of the first connecting rod 23 and the second connecting rod 24. In this case, one end of each first connecting rod 23 and each second connecting rod 24 is slidably disposed in a corresponding limiting sleeve 15 to limit the first connecting rod 23 and the second connecting rod 24. The number of limiting sleeves 15 can also be twice the sum of the number of the first connecting rod 23 and the second connecting rod 24. In this case, both ends of each first connecting rod 23 and each second connecting rod 24 are slidably disposed in the limiting sleeve 15 to limit the first connecting rod 23 and the second connecting rod 24.

[0080] The first connecting rod 23 is provided with a first limiting protrusion 232, which is arranged adjacent to the limiting sleeve 15 connected to the first connecting rod 23, and is used to abut the limiting sleeve 15 when the first connecting rod 23 moves, so as to limit the first connecting rod 23. In this way, by setting the first limiting protrusion 232, the moving distance of the first connecting rod 23 in the Y-axis direction can be limited. It can be understood that when one limiting sleeve 15 is correspondingly arranged for one first connecting rod 23, one first limiting protrusion 232 is arranged on one first connecting rod 23, and when two limiting sleeves 15 are correspondingly arranged for one first connecting rod 23, two first limiting protrusions 232 are arranged on one first connecting rod 23. The second connecting rod 24 is provided with a second limiting protrusion 242, which is arranged adjacent to the limiting sleeve 15 connected to the second connecting rod 24, and is used to abut the limiting sleeve 15 when the second connecting rod 24 moves, so as to limit the second connecting rod 24. In this way, by providing the second limiting protrusion 242, the moving distance of the second connecting rod 24 in the Y-axis direction can be limited. It can be understood that when one limiting sleeve 15 is provided for one second connecting rod 24, one second limiting protrusion 242 is provided on one second connecting rod 24, and when two limiting sleeves 15 are provided for one second connecting rod 24, two second limiting protrusions 242 are provided on one second connecting rod 24.

[0081] See also Figure 1 and Figure 4In some embodiments, the second surface 12 of the base 10 is provided with a plurality of positioning posts 16, and the plurality of positioning posts 16 are used to be inserted into an external device such as a mold 400 to position the base 10 when taking or placing materials. It can be understood that the external device can be the mold 400 mentioned above, or it can be other structures that carry the workpiece 200, and the external device is provided with positioning holes 401. When placing the base 10, the base 10 can be positioned by inserting the positioning posts 16 into the positioning holes 401 to improve the accuracy of clamping the workpiece 200. The number and position of the positioning posts 16 are consistent with the number and position of the positioning holes 401 in the external device, and are not limited here.

[0082] See also Figure 1 and Figure 4 In some embodiments, the positioning column 16 includes a positioning portion 161 and a stopper 162. The stopper 162 is connected to the base 10, and the cross-sectional area of ​​the stopper 162 is larger than the cross-sectional area of ​​the positioning portion 161. The positioning portion 161 is used to be inserted into an external device to position the base 10, and the stopper 162 is used to abut against the external device such as the mold 400 described above to limit the distance of the base 10 from the external device. It can be understood that the structure of the positioning portion 161 is compatible with the structure of the positioning hole 401 in the external device, so that the positioning portion 161 can position the base 10 on a horizontal plane when inserted into the positioning hole 401. The cross-sectional area of ​​the stopper 162 is larger than the cross-sectional area of ​​the positioning portion 161, that is, the cross-sectional area of ​​the stopper 162 is larger than the cross-sectional area of ​​the positioning hole 401. In this way, when the base 10 is placed, the stopper 162 can abut against the external device to position the base 10 on a vertical plane.

[0083] See also Figure 1 and Figure 3 In some embodiments, the driving assembly 30 further includes a first driving member 31 and a second driving member 32 disposed on the first surface 11 of the base 10, wherein the first driving member 31 is connected to the first pull rod 21, and the second driving member 32 is connected to the second pull rod 22. Both the first driving member 31 and the second driving member 32 can be telescopic cylinders, telescopic motors, etc. The first driving member 31 drives the plurality of first connecting rods 23 to move through the first pull rod 21, and the second driving member 32 drives the plurality of second connecting rods 24 to move through the second pull rod 22, thereby driving the first clamping finger 251 to move closer to or away from the corresponding second clamping finger 252, so as to clamp or release the workpiece 200.

[0084] See also Figure 3In some embodiments, the output end of the first driving member 31 is provided with a first connecting block 311, the first pull rod 21 is provided with a first slot 211 adapted to the first connecting block 311, the first connecting block 311 is provided in the first slot 211, and the cross-sectional area of ​​the first slot 211 is not less than the cross-sectional area of ​​the first connecting block 311. When the cross-sectional area of ​​the first slot 211 is the same as the cross-sectional area of ​​the first connecting block 311, the first connecting block 311 is clamped in the first slot 211, and the first pull rod 21 moves following the output end of the first driving member 31. When the cross-sectional area of ​​the first slot 211 is greater than the cross-sectional area of ​​the first connecting block 311, when the output end of the first driving member 31 changes the direction of movement, the first connecting block 311 has a moving distance in the first slot 211 to play a buffering role.

[0085] The output end of the second driving member 32 is provided with a second connecting block 321, the second pull rod 22 is provided with a second slot 221 adapted to the second connecting block 321, the second connecting block 321 is provided in the second slot 221, and the cross-sectional area of ​​the second slot 221 is not less than the cross-sectional area of ​​the second connecting block 321. When the cross-sectional area of ​​the second slot 221 is the same as the cross-sectional area of ​​the second connecting block 321, the second connecting block 321 is clamped in the second slot 221, and the second pull rod 22 moves following the output end of the second driving member 32. When the cross-sectional area of ​​the second slot 221 is larger than the cross-sectional area of ​​the second connecting block 321, when the output end of the second driving member 32 changes the direction of movement, the second connecting block 321 has a moving distance in the second slot 221 to play a buffering role.

[0086] See also Figure 1 , Figure 6 and Figure 7 In some other embodiments, the material taking and placing device 100 further includes a plurality of ejector pins 40, which are arranged in the mold 400 and correspond to the workpieces 200 respectively. When taking the material, the ejector pins 40 first abut against the workpiece 200, and then lift the workpiece 200, and then the clamping assembly 20 clamps the workpiece 200. In another embodiment, an exhaust hole 41 is arranged inside the ejector pin 40 to exhaust air to generate negative pressure, thereby adsorbing the workpiece 200 located on the upper side of the ejector pin 40, and improving the stability of the workpiece 200 when the workpiece 200 is clamped.

[0087] The working process of the material taking and placing device 100 provided in the embodiment of the present application is roughly as follows:

[0088] First, the first driving member 31 and the second driving member 32 drive the first pull rod 21 and the second pull rod 22 to move away from each other, thereby driving the first clamping finger 251 of the first connecting rod 23 and the second clamping finger 252 of the second connecting rod 24 to move away from each other. Then, the base 10 is placed on the mold 400, and the base 10 is positioned on the horizontal plane by inserting the positioning portion 161 of the positioning column 16 into the positioning hole 401 in the mold 400, and the base 10 is positioned on the vertical plane by abutting the mold 400 with the stopper portion 162 of the positioning column 16. After positioning is completed, the first driving member 31 and the second driving member 32 respectively drive the first pull rod 21 and the second pull rod 22 to approach each other, and then respectively drive the first connecting rod 23 and the second connecting rod 24 to move, so that the first clamping finger 251 and the second clamping finger 252 in each pair of clamping fingers 25 approach each other, and then the first clamping protrusion 2511 and the second clamping protrusion 2521 approach each other and move to the lower side of the upper part of the workpiece 200. At this time, the side surface of the workpiece 200 is located in the gap 14 between the limit block 13 and the first clamping finger 251 and the second clamping finger 252, so that the clamping of the workpiece 200 is completed.

[0089] After clamping the workpiece 200, the base 10 can be moved to the material receiving position, and the first driving member 31 and the second driving member 32 respectively drive the first pull rod 21 and the second pull rod 22 to move away from each other, thereby driving the first clamping finger 251 on the first connecting rod 23 and the second clamping finger 252 on the second connecting rod 24 to move away from each other, and the workpiece 200 can be released.

[0090] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A material handling device for handling workpieces, characterized in that: include: a base having a first side and a second side facing each other; A clamping assembly, comprising a first pull rod, a second pull rod, a plurality of first connecting rods, a plurality of second connecting rods and a plurality of clamping finger pairs, wherein the plurality of first connecting rods and the plurality of second connecting rods are arranged in a one-to-one correspondence and are all slidably connected to the first surface of the base, the first pull rod is connected to the plurality of first connecting rods, the second pull rod is connected to the plurality of second connecting rods, the plurality of clamping finger pairs each include a first clamping finger and a second clamping finger, the plurality of first clamping fingers are all connected to the first connecting rod and extend out of the second surface of the base, the plurality of second clamping fingers are all connected to the second connecting rod and extend out of the second surface of the base, and the plurality of first clamping fingers and the plurality of second clamping fingers are arranged in a one-to-one correspondence; and A driving assembly is disposed on the second surface of the base and connected to the clamping assembly, and is used to drive the first clamping finger and the second clamping finger to move closer to or farther from each other.

2. The material taking and placing device according to claim 1, characterized in that: The first clamping finger is provided with a first clamping protrusion facing the corresponding second clamping finger, and the second clamping finger is provided with a second clamping protrusion corresponding to the first clamping protrusion. The first clamping protrusion and the second clamping protrusion are used to clamp the workpiece when they are close to each other.

3. The material taking and placing device according to claim 1, characterized in that: The second surface of the base is provided with a plurality of limit blocks, and the plurality of limit blocks are respectively provided corresponding to the plurality of clamping finger pairs, and a gap for accommodating the workpiece is provided between the limit blocks and the corresponding first clamping fingers and second clamping fingers, and the limit blocks are used to cooperate with the first clamping fingers and the second clamping fingers to clamp the workpiece.

4. The material taking and placing device according to claim 1, characterized in that: The first connecting rod is provided with a plurality of first grooves for accommodating the first clamping fingers, the cross section of the first groove is square, the cross section of one end of the first clamping finger arranged in the first groove is square, and the first groove is used to limit the first clamping finger; The second connecting rod is provided with a plurality of second grooves for accommodating the second clamping fingers, the second grooves have a square cross section, the cross section of one end of the second clamping finger arranged in the second grooves has a square cross section, and the second grooves are used to limit the second clamping fingers.

5. The material taking and placing device according to claim 1, characterized in that: A first avoidance groove is arranged at one end of the first clamping finger away from the first connecting rod, and a second avoidance groove is arranged at one end of the second clamping finger away from the second connecting rod.

6. The material taking and placing device according to claim 1, characterized in that: The first surface of the base is provided with a plurality of limiting sleeves, and the plurality of limiting sleeves are respectively sleeved on the first connecting rod and the second connecting rod, and are used to limit the first connecting rod and the second connecting rod; The first connecting rod is provided with a first limiting protrusion, which is arranged adjacent to the limiting sleeve connected to the first connecting rod and is used to abut against the limiting sleeve when the first connecting rod moves, so as to limit the position of the first connecting rod; The second connecting rod is provided with a second limiting protrusion, which is arranged adjacent to the limiting sleeve connected to the second connecting rod and is used to abut against the limiting sleeve when the second connecting rod moves, so as to limit the second connecting rod.

7. The material taking and placing device according to claim 1, characterized in that: The second surface of the base is provided with a plurality of positioning posts, and the plurality of positioning posts are used to be inserted into an external device to position the base when taking or placing materials.

8. The material taking and placing device according to claim 7, characterized in that: The positioning column includes a positioning portion and a stop portion, the stop portion is connected to the base, and the cross-sectional area of ​​the stop portion is larger than the cross-sectional area of ​​the positioning portion, the positioning portion is used to be inserted into the external device to position the base, and the stop portion is used to abut the external device to limit the distance between the base and the external device.

9. The material taking and placing device according to claim 1, characterized in that: The driving assembly further includes a first driving member and a second driving member disposed on the first surface of the base, wherein the first driving member is connected to the first pull rod, and the second driving member is connected to the second pull rod.

10. The material taking and placing device according to claim 9, characterized in that: The output end of the first driving member is provided with a first connecting block, the first pull rod is provided with a first slot adapted to the first connecting block, the first connecting block is arranged in the first slot, and the cross-sectional area of ​​the first slot is not less than the cross-sectional area of ​​the first connecting block; A second connecting block is provided at the output end of the second driving member, the second pull rod is provided with a second slot adapted to the second connecting block, the second connecting block is arranged in the second slot, and the cross-sectional area of ​​the second slot is not less than the cross-sectional area of ​​the second connecting block.

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