Feeding jig based on powdery resin

Abstract

The utility model discloses a material loading jig based on powdery resin, which comprises a bottom plate, and clamping mechanisms and a material scattering mechanism which are arranged on the bottom plate, the clamping mechanisms are arranged on both sides of the bottom plate, each clamping mechanism comprises a first handle and a clamping block, the first handle is fixedly connected with the bottom plate, the clamping block is positioned between the first handle and the bottom plate, and the material scattering mechanism is arranged on the bottom plate. The clamping block is in sliding connection with the first handle, a first elastic piece is arranged between the clamping block and the first handle, and the clamping mechanism is used for clamping the separation film between the bottom plate and the clamping block; the material scattering mechanism comprises a material box, the material box is slidably connected with the bottom plate, a plurality of first through holes are formed in the bottom of the material box, a plurality of second through holes penetrating through the bottom plate in the thickness direction are formed in the bottom plate, and the second through holes are used for being in one-to-one correspondence with the first through holes and communicating with the first through holes when the material box slides to the first state in the length direction of the bottom plate. According to the feeding jig, feeding can be completed only by one person, operation is easy, fluctuation of operation time of each die can be effectively reduced, and product quality and stability are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of semiconductor packaging, and in particular relates to a feeding fixture based on powdered resin. Background Art

[0002] In the prior art, when using powdered resin to perform semiconductor encapsulation through the injection molding process, it is necessary to adsorb the separation membrane in the lower mold of the mold, spread the resin, and then perform encapsulation. Since this process has not yet been automated, during operation, two people are required to simultaneously tighten the separation membrane on the front and back sides of the encapsulation press and fit it to the mold surface. While maintaining a tight fit, a third person operates the equipment to adsorb the separation membrane on the mold; then the powdered resin is sprinkled into the mold and spread flat, and then enters the operating equipment for forming. This process requires multiple people to operate, which is inconvenient to operate, and manual operation can easily lead to large errors in the adsorption position of the separation membrane and uneven resin spreading. In addition, the operating time of each mold is different, and the resin and separation membrane are prone to overheating in the mold, resulting in large fluctuations in product quality. Utility Model Content

[0003] In view of this, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a feeding fixture based on powdered resin, so that the above operations can be completed by only one person, and the operation is simple, which can effectively reduce the fluctuation of the operation time of each mold and improve product quality and stability.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A feeding jig based on powdered resin, comprising a base plate and a clamping mechanism and a spreading mechanism arranged on the base plate, the clamping mechanism being arranged on both sides of the base plate, the clamping mechanism comprising a first handle and a clamping block, the first handle being fixedly connected to the base plate, the clamping block being located between the first handle and the base plate, the clamping block being slidably connected to the first handle and a first elastic member being arranged between the clamping block and the first handle, the clamping mechanism being used to clamp a separation membrane between the base plate and the clamping block; the spreading mechanism comprising a material box, the material box being slidably connected to the base plate, a plurality of first through holes being provided at the bottom of the material box, a plurality of second through holes being provided on the base plate that penetrates the thickness direction thereof, the second through holes being used to correspond one-to-one and be connected with the first through holes when the material box slides along the length direction of the base plate to a first state.

[0006] According to some preferred implementation aspects of the utility model, the first handle includes a cross bar and fixed blocks located at both ends of the cross bar, the top of the fixed block is fixedly connected to the bottom of the cross bar, and the two fixed blocks and the cross bar and the bottom plate form a through groove.

[0007] According to some preferred implementation aspects of the utility model, each of the fixing blocks is provided with a first notch, the first notch is connected to the through groove, the first notch is opened from one side of the fixing block close to the bottom plate to the other side, the height of the first notch is smaller than the height of the fixing block, the width of the first notch is smaller than the width of the fixing block, and the length of the first notch is equal to the length of the fixing block.

[0008] According to some preferred implementation aspects of the utility model, a fixing column is arranged between the fixing block and the base plate, the two ends of the fixing column are respectively fixedly connected to the fixing block and the base plate, and the fixing column is accommodated in the first notch; the clamping block is accommodated in the through groove and the first notch, the clamping block is slidably connected to the fixing column, and the height of the first notch is greater than the height of the clamping block.

[0009] According to some preferred implementation aspects of the utility model, the first elastic member is sleeved on the outer circumference of the fixing column, one end of the first elastic member abuts against one end of the fixing column, and the other end of the first elastic member abuts against the clamping block.

[0010] According to some preferred implementation aspects of the utility model, the material spreading mechanism also includes a fixing part, and the fixing parts are respectively arranged on both sides of the material box close to the two clamping mechanisms, the side of the fixing part close to the material box is fixedly connected to the material box, and the side of the fixing part away from the material box has a step portion parallel to the material box; each of the fixing parts is provided with a blocking block at both ends along the length direction thereof, the blocking block is fixedly connected to the bottom plate, and the length of one of the fixing parts is smaller than the distance between the two blocking blocks located at both ends of the fixing part.

[0011] According to some preferred implementation aspects of the utility model, a second elastic member is provided between one end of the fixing member and a corresponding one of the blocking blocks, one end of the second elastic member abuts against the blocking block, and the other end of the second elastic member abuts against the fixing member.

[0012] According to some preferred implementation aspects of the utility model, a guide block is provided on the side of each fixing member away from the material box, and the guide block is fixedly connected to the bottom plate, and each guide block is provided with a second notch, and the second notch is opened from one side of the guide block close to the bottom plate to the other side, and the second notch cooperates with the step portion, and the length of the step portion is greater than the length of the second notch, the height of the second notch is less than the height of the guide block, the width of the second notch is less than the width of the guide block, and the length of the second notch is equal to the length of the guide block. In some embodiments of the utility model, through the mutual cooperation between the step portion and the second notch, the fixing member can move back and forth relative to the guide block along the length direction of the bottom plate. The top surface of the step portion fits with the top surface of the second notch, the height of the step portion is equal to the height of the second notch, and the side of the step portion close to the second notch fits with the side of the second notch close to the clamping mechanism.

[0013] According to some preferred implementation aspects of the utility model, the material box also has a second state. When the material box is in the second state, the bottom plate is used to block the first through hole, and one end of the fixing member away from the second elastic member abuts against a corresponding blocking block away from the second elastic member; when the material box is in the first state, one end of the fixing member provided with the second elastic member abuts against a corresponding blocking block provided with the second elastic member; the distance moved by the material box from the second state to the first state is equal to the difference between the distance between the two blocking blocks and the length of the fixing member.

[0014] According to some preferred implementation aspects of the utility model, the clamping mechanism also includes a second handle accommodated in the through slot, the bottom surface of the second handle is fixedly connected to the top surface of the clamping block, and the height of the through slot is greater than the sum of the heights of the clamping block and the second handle.

[0015] Due to the adoption of the above technical scheme, compared with the prior art, the utility model is a feeding fixture based on powdered resin, which is used to tension the separation membrane by setting a clamping mechanism and a spreading mechanism to evenly spread the powdered resin on the separation membrane, so that the above operation can be completed by only one person, and the operation is simpler and faster, which can effectively reduce the error of the adsorption position of the separation membrane, and can also reduce the step-by-step operation time of the adsorption and spreading of the separation membrane, thereby effectively reducing the excessive heating of the separation membrane or the resin material in the mold, and reducing the fluctuation of the operation time of each mold, which is beneficial to improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the feeding fixture in the preferred embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the side view structure of the loading fixture after the first handle and the second handle are omitted in the preferred embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of a top view of the structure of the loading fixture after the first handle and the second handle are omitted in the preferred embodiment of the utility model;

[0020] Figure 4 This is a bottom view structural diagram of the loading jig in the preferred embodiment of the utility model after the first handle and the second handle are omitted;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the loading fixture after the partial structure is hidden in the preferred embodiment of the utility model;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the guide block in the preferred embodiment of the utility model;

[0023] In the accompanying drawings: base plate 1, second through hole 11, clamping mechanism 2, cross bar 21, fixing block 22, first notch 221, through groove 23, clamping block 24, fixing column 25, first elastic member 26, second handle 27, material spreading mechanism 3, material box 31, first through hole 311, fixing member 32, step portion 321, blocking block 33, second elastic member 34, guide block 35, second notch 351, first handle 36, second handle 4. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] Reference Figures 1 to 6A feeding fixture based on powdered resin in this embodiment includes a base plate 1 and a clamping mechanism 2 and a spreading mechanism 3 arranged on the base plate 1, wherein two clamping mechanisms 2 are provided, and the two clamping mechanisms 2 are respectively arranged on both sides of the base plate 1.

[0026] Furthermore, the clamping mechanism 2 is used to clamp the side of the separation membrane so that the separation membrane is tensioned. Figure 1 , Figure 2 and Figure 5 As shown, the clamping mechanism 2 includes a first handle, a second handle 27 and a clamping block 24, the clamping block 24 is located between the first handle and the base plate 1, the first handle is fixedly connected to the base plate 1, the second handle 27 is fixedly connected to the clamping block 24, and the second handle 27 and the clamping block 24 can move up and down relative to the base plate 1.

[0027] Specifically, the first handle includes a cross bar 21 and fixed blocks 22 located at both ends of the cross bar 21. The length direction of the cross bar 21 is parallel to the length direction of the base plate 1. The top of the fixed block 22 is fixedly connected to the bottom of the cross bar 21. The two fixed blocks 22 and the cross bar 21 and the base plate 1 form a through groove 23. The second handle 27 is accommodated in the through groove 23. The height of the through groove 23 is greater than the sum of the heights of the clamping block 24 and the second handle 27.

[0028] Each fixing block 22 is provided with a first notch 221 connected with the through slot 23. The first notch 221 is opened from one side of the fixing block 22 close to the bottom plate 1 to the other side. Moreover, the height of the first notch 221 is less than the height of the fixing block 22 and greater than the height of the clamping block 24. The width of the first notch 221 is less than the width of the fixing block 22. The length of the first notch 221 is equal to the length of the fixing block 22. A fixing column 25 is provided between the fixing block 22 and the bottom plate 1. The fixing column 25 is accommodated in the first notch 221. The two ends of the fixing column 25 are respectively fixedly connected to the fixing block 22 and the bottom plate 1. The fixing column 25 passes through the thickness direction of the clamping block 24 and the clamping block 24 is slidably connected to the fixing column 25. In this embodiment, the length of the clamping block 24 is equal to the length of the bottom plate 1. The length of the first handle is less than the length of the bottom plate 1. The two ends of the clamping block 24 are located outside the first notch 221. The remaining part of the clamping block 24 is accommodated in the through slot 23 and the first notch 221.

[0029] A first elastic member 26 is sleeved on the outer periphery of the fixing column 25 . One end of the first elastic member 26 abuts against the fixing block 22 , and the other end of the first elastic member 26 abuts against the clamping block 24 . The first elastic member 26 is always in a compressed state. When the clamping mechanism 2 is not in use, the bottom surface of the clamping block 24 abuts against the top surface of the bottom plate 1, ensuring that when the clamping mechanism 2 is needed to clamp the separation membrane, the second handle 27 is manually pulled upward to drive the clamping block 24 to move upward along the length direction of the fixing column 25, further compressing the first elastic member 26 so that there is a gap between the clamping block 24 and the bottom plate 1. At this time, the cut separation membrane can be laid flat on the bottom surface of the bottom plate 1, and the separation membrane is placed in the gap between the clamping block 24 and the bottom plate 1 close to both sides of the clamping mechanism 2. After releasing the hand, the clamping block 24 is driven to move downward to abut against the bottom plate 1 under the action of the restoring force of the first elastic member 26, thereby clamping the side of the separation membrane, thereby tensioning the separation membrane, and the bottom of the separation membrane is flatly attached to the bottom surface of the bottom plate 1. The first elastic member 26 of this embodiment is preferably a spring.

[0030] Furthermore, if Figure 1 , Figure 3 and Figure 5 As shown, the material spreading mechanism 3 includes a material box 31, a fixing member 32 and a first handle 36. The length direction of the material box 31 is parallel to the length direction of the bottom plate 1. The material box 31 is slidably connected to the bottom plate 1. One end of the material box 31 is fixedly provided with a first handle 36 for pulling the material box 31. Two fixing members 32 are provided. The two fixing members 32 are respectively provided on both sides of the material box 31 close to the clamping mechanism 2. The side of the fixing member 32 close to the material box 31 is fixedly connected to the material box 31. In addition, a plurality of first through holes 311 are provided at the bottom of the material box 31, and a plurality of second through holes 11 are provided on the bottom plate 1 that penetrates the thickness direction thereof. The number of the first through holes 311 is the same as the number of the second through holes 11.

[0031] The material box 31 of this embodiment has a first state and a second state. When the material box 31 is in the first state, the second through hole 11 corresponds to the first through hole 311 and is connected; when the material box 31 is in the second state, the first through hole 311 is not connected to the second through hole 11, and the bottom plate 1 is used to block the first through hole 311 in the second state, so that the powdered resin can be contained in the material box 31 without leakage.

[0032] Specifically, the side of the fixing member 32 away from the material box 31 has a step portion 321 parallel to the material box 31; in order to limit the moving distance of the material box 31, each fixing member 32 is provided with a blocking block 33 at both ends along its length direction, each blocking block 33 is fixedly connected to the bottom plate 1, and the length of a fixing member 32 is less than the distance between the two blocking blocks 33 at its two ends, and the fixing member 32 can move between the two blocking blocks 33 as the material box 31 moves. In order to ensure the reset of the material box 31 after the staff lets go, a second elastic member 34 is provided between one end of the fixing member 32 and a corresponding blocking block 33, one end of the second elastic member 34 abuts against the blocking block 33, and the other end of the second elastic member 34 abuts against the fixing member 32, and the second elastic member 34 is in a compressed state when the material box 31 is in the first state and the second state, and only the degree of compression is different. The second elastic member 34 of this embodiment is preferably a spring.

[0033] In this embodiment, a first receiving groove is provided at one end of the fixing member 32 provided with the second elastic member 34, and a second receiving groove is provided at one end of a blocking block 33 provided with the second elastic member 34 close to the fixing member 32, so that the two ends of the second elastic member 34 are respectively accommodated in the first receiving groove and the second receiving groove. When the magazine 31 is in the first state, one end of the fixing member 32 provided with the second elastic member 34 abuts against a corresponding blocking block 33 provided with the second elastic member 34; when the magazine 31 is in the second state, one end of the fixing member 32 away from the second elastic member 34 abuts against a corresponding blocking block 33 away from the second elastic member 34. The distance that the material box 31 moves from the second state to the first state is equal to the difference between the distance between the two blocking blocks 33 and the length of the fixing member 32, that is, when the material box 31 is in the second state, the distance between a first through hole 311 on the material box 31 and a second through hole 11 corresponding to the first through hole 311 when the material box 31 is in the first state is equal to the distance that the material box 31 moves from the second state to the first state.

[0034] Furthermore, in order to guide the movement of the material box 31 and the fixing member 32 along the length direction of the bottom plate 1, a guide block 35 is provided on the side of each fixing member 32 away from the material box 31. The guide block 35 is fixedly connected to the bottom plate 1, and the length of the guide block 35 is less than the length of the step portion 321 on the fixing member 32. Figure 5 and Figure 6As shown, each guide block 35 is provided with a second notch 351 which cooperates with the step portion 321 from one side close to the base plate 1 to the other side, and the height of the second notch 351 is less than the height of the guide block 35 and equal to the height of the step portion 321, the width of the second notch 351 is less than the width of the guide block 35, and the length of the second notch 351 is equal to the length of the guide block 35, so that the top surface of the step portion 321 is in contact with the top surface of the second notch 351, and the side surface of the step portion 321 close to the second notch 351 is in contact with the side surface of the second notch 351 close to the clamping mechanism 2. When the first handle 36 is manually pulled to drive the material box 31 to move, the fixing member 32 can move back and forth relative to the guide block 35 along the length direction of the base plate 1.

[0035] Furthermore, if Figure 1 As shown, the loading jig of this embodiment further includes a second handle 4 fixedly connected to the bottom plate 1, and two second handles 4 are provided, and the two second handles 4 are respectively located on both sides of the bottom plate 1, corresponding to the clamping mechanism 2. The second handle 4 is provided to facilitate holding the jig to place the jig into the mold.

[0036] The working process of the feeding fixture based on powdered resin of the utility model is as follows:

[0037] During operation, firstly cut the separation membrane and lay it flat on the bottom surface of the bottom plate 1, manually pull the second handle 27 upwards, drive the clamping block 24 to move upward along the length direction of the fixed column 25, so that there is a gap between the clamping block 24 and the bottom plate 1, and put the separation membrane into the gap between the clamping block 24 and the bottom plate 1 near the two sides of the clamping mechanism 2. After releasing the clamping block 24, the restoring force of the first elastic member 26 drives the clamping block 24 to move downward to abut against the bottom plate 1, thereby clamping the side of the separation membrane, and then the separation membrane is tensioned, and the bottom of the separation membrane is flatly attached to the bottom surface of the bottom plate 1. Then sprinkle the powdered resin into the material box 31, and then hold the two second handles 4 to put the jig into the mold, turn on the outer periphery adsorption and inner periphery adsorption functions of the separation membrane in turn, and manually pull the first handle 36 to convert the material box 31 from the second state to the first state, so as to sprinkle the powdered resin and lay it flat on the separation membrane. Finally, the second handle 27 is pulled upward again with both hands to open the clamping mechanism 2, and the entire fixture is removed, and then the plastic sealing operation is performed.

[0038] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A feeding jig based on powdered resin, characterized in that: The invention comprises a base plate and a clamping mechanism and a material spreading mechanism arranged on the base plate, the clamping mechanism is arranged on both sides of the base plate, the clamping mechanism comprises a first handle and a clamping block, the first handle is fixedly connected to the base plate, the clamping block is located between the first handle and the base plate, the clamping block is slidably connected to the first handle and a first elastic member is arranged between the clamping block and the first handle, the clamping mechanism is used to clamp the separation membrane between the base plate and the clamping block; the material spreading mechanism comprises a material box, the material box is slidably connected to the base plate, a plurality of first through holes are provided at the bottom of the material box, a plurality of second through holes are provided running through the thickness direction thereof, the second through holes are used to correspond one-to-one and be connected with the first through holes when the material box slides to the first state along the length direction of the base plate.

2. The feeding jig according to claim 1, characterized in that: The first handle comprises a crossbar and fixed blocks located at both ends of the crossbar, the top of the fixed block is fixedly connected to the bottom of the crossbar, and a through groove is formed between the two fixed blocks, the crossbar and the bottom plate.

3. The feeding jig according to claim 2, characterized in that: Each of the fixing blocks is provided with a first notch, the first notch is connected to the through groove, the first notch is opened from one side of the fixing block close to the bottom plate to the other side, the height of the first notch is smaller than the height of the fixing block, the width of the first notch is smaller than the width of the fixing block, and the length of the first notch is equal to the length of the fixing block.

4. The feeding jig according to claim 3, characterized in that: A fixing column is arranged between the fixing block and the base plate, and the two ends of the fixing column are fixedly connected to the fixing block and the base plate respectively, and the fixing column is accommodated in the first notch; the clamping block is accommodated in the through groove and the first notch, and the clamping block is slidably connected to the fixing column, and the height of the first notch is greater than the height of the clamping block.

5. The feeding jig according to claim 4, characterized in that: The first elastic member is sleeved on the outer circumference of the fixing column, one end of the first elastic member abuts against the fixing block, and the other end of the first elastic member abuts against the clamping block.

6. The feeding jig according to claim 1, characterized in that: The material spreading mechanism also includes a fixing part, and the fixing parts are respectively arranged on both sides of the material box close to the two clamping mechanisms, the side of the fixing part close to the material box is fixedly connected to the material box, and the side of the fixing part away from the material box has a step portion parallel to the material box; each of the fixing parts is provided with a blocking block at both ends along the length direction thereof, and the blocking block is fixedly connected to the bottom plate, and the length of one of the fixing parts is less than the distance between the two blocking blocks located at both ends of the fixing part.

7. The feeding jig according to claim 6, characterized in that: A second elastic member is disposed between one end of the fixing member and a corresponding one of the blocking blocks, one end of the second elastic member abuts against the blocking block, and the other end of the second elastic member abuts against the fixing member.

8. The feeding jig according to claim 6, characterized in that: A guide block is provided on one side of each fixing member away from the material box, and the guide block is fixedly connected to the bottom plate. Each guide block is provided with a second notch, and the second notch is opened from one side of the guide block close to the bottom plate to the other side, and the second notch cooperates with the step portion, the length of the step portion is greater than the length of the second notch, the height of the second notch is smaller than the height of the guide block, the width of the second notch is smaller than the width of the guide block, and the length of the second notch is equal to the length of the guide block.

9. The feeding jig according to claim 7, characterized in that: The material box also has a second state. When the material box is in the second state, the bottom plate is used to block the first through hole, and one end of the fixing member away from the second elastic member abuts against a corresponding blocking block away from the second elastic member; when the material box is in the first state, one end of the fixing member provided with the second elastic member abuts against a corresponding blocking block provided with the second elastic member; the distance moved by the material box from the second state to the first state is equal to the difference between the distance between the two blocking blocks and the length of the fixing member.

10. The feeding jig according to claim 2, characterized in that: The clamping mechanism also includes a second handle accommodated in the through slot, the bottom surface of the second handle is fixedly connected to the top surface of the clamping block, and the height of the through slot is greater than the sum of the heights of the clamping block and the second handle.

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