Packaging clamp for IGBT (Insulated Gate Bipolar Translator) production

Abstract

The invention provides a packaging clamp for IGBT production, and relates to the technical field of IGBT production. The packaging clamp for IGBT production comprises a bearing mechanism, a liquid storage tank is fixedly arranged at the inner bottom of the bearing mechanism, a hydraulic pump is fixedly arranged at the position, close to one side of the liquid storage tank, of the inner bottom of the bearing mechanism, a buffering mechanism is fixedly arranged at the position, close to the upper end, of the interior of the bearing mechanism, and a clamp mechanism is slidably arranged at the position, close to one side, of the bearing mechanism; the clamp mechanism comprises a middle connecting column, an upper baffle ring is fixedly arranged at the upper end of the middle connecting column, a limiting strip is fixedly arranged on one side of the middle connecting column, and a connecting ring is slidably arranged at the position, close to the middle, of the middle connecting column in a sleeving mode. The clamp plate is accurately positioned at the upper end of the IGBT workpiece, contact is achieved through the rubber pad, the positioning precision is remarkably improved, an intelligent control system does not need to participate in the design of the clamp plate, and therefore the stability of the whole system is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of IGBT production, in particular to a packaging fixture for IGBT production. Background Art

[0002] IGBT is a three-terminal semiconductor switching device, which is widely used for efficient and fast switching in a variety of electronic devices. IGBT combines the advantages of high input impedance of MOSFET (metal-oxide-semiconductor field-effect transistor) and low on-state voltage drop of bipolar transistor (BJT, bipolar junction transistor). In the process of IGBT production, a packaging fixture is needed, which is a kind of auxiliary tool specially designed for the packaging process of IGBT module. Its function is to accurately locate and fix the package of IGBT module to ensure the quality of packaging and improve production efficiency.

[0003] In the current technical field, the clamping process of IGBT usually involves the use of flexible clamps. In order to prevent excessive clamping force, these clamps are often equipped with buffer components or trigger structures that can automatically stop after contacting the workpiece to ensure safe clamping. However, the design of such clamps often relies entirely on intelligent control systems. Once the system fails, it may cause damage to the IGBT, thereby increasing unnecessary production costs. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a packaging fixture for IGBT production, which solves the problem that the IGBT may be damaged when a system failure occurs, thereby increasing unnecessary production costs.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a packaging fixture for IGBT production, comprising a bearing mechanism, a liquid storage tank is fixedly arranged at the bottom of the bearing mechanism, a hydraulic pump is fixedly arranged at a position close to one side of the liquid storage tank at the bottom of the bearing mechanism, a buffer mechanism is fixedly arranged at the upper end of the bearing mechanism, and a clamp mechanism is slidably arranged at one side of the bearing mechanism;

[0008] The clamp mechanism comprises an intermediate connecting column, an upper retaining ring is fixedly arranged on the upper end of the intermediate connecting column, a limit strip is fixedly arranged on one side of the intermediate connecting column, a connecting ring is provided on the sliding sleeve near the middle of the intermediate connecting column, a power telescopic rod is fixedly arranged between the upper end of the connecting ring and the upper retaining ring, the power telescopic rod is hollow inside and a spring is fixedly connected between the upper and lower ends;

[0009] A control tube is provided between the upper and lower ends of the connecting ring on one side, a touch column is provided through the lower end of the control tube for sliding, a control column is provided in the middle of the control tube for sliding, a liquid inlet is provided inside the control column, inner springs are fixedly provided at the upper and lower ends of the control column, the elastic force of the lower one of the two inner springs is greater than the elastic force of the upper one, a lifting column is provided through the upper end of the control column for sliding, the lower end of the lifting column is fixedly connected to the upper end of the upper one of the two inner springs, a reflux port is provided inside the lifting column, a hole is provided at the upper front end of the control column and is connected to the hole provided on one side of the power telescopic rod through a pipeline, and a liquid inlet hose is provided through one side of the control tube near the liquid inlet;

[0010] The buffer mechanism comprises a buffer frame, a sliding plate is slidably arranged inside the buffer frame, a return spring is fixedly connected between the sliding plate and one side inside the buffer frame, and an oil outlet pipe is penetrated through one side of the buffer frame.

[0011] Preferably, the other end of the liquid inlet hose is fixedly connected to a connecting pipe, the other end of the connecting pipe passes through the supporting mechanism and is fixedly connected to the oil outlet pipe, the upper end of the interior of the lifting column is connected to the reflux port and is provided with a reflux pipe, the other end of the reflux pipe is fixedly connected to the interior of the liquid storage tank, and a lower pressure plate is fixedly provided near the upper end of the lifting column body.

[0012] Preferably, a clamp plate is fixedly provided inside the connecting ring, a rubber pad is fixedly provided on the lower end of the clamp plate away from the middle connecting column, a positioning ring is provided on the threaded sleeve near the lower end of the middle connecting column, an indicator ring is fixedly provided on the lower end of the middle connecting column, a limiting ring is provided on the sliding sleeve near the lower end of the middle connecting column, and two clamp mechanisms are axially symmetrically provided.

[0013] Preferably, a support spring is rotatably provided at the lower end of the limiting ring, an adjustment ring is rotatably provided at the lower end of the support spring, and the adjustment ring is threadedly sleeved on the lower end of the intermediate connecting column body.

[0014] Preferably, the supporting mechanism includes a clamp table, and adjustment grooves are provided on the front and rear sides of the clamp table, and limit slide rods are fixedly arranged inside two of the four adjustment grooves, and the two intermediate connecting columns are slidably arranged inside two of the four adjustment grooves near the position between the indicator ring and the limit ring, and the two limit slide rods are respectively slidably arranged inside them.

[0015] Preferably, a lower support frame is fixedly provided at the lower end of the clamp table, a limiting groove is opened near the middle position of the upper end of the clamp table, an adjusting screw is provided on the internal threaded sleeve near the rear side of the lower support frame of the clamp table, an adjusting plate is rotatably provided at the front end of the adjusting screw, and the adjusting plate is slidably provided inside the limiting groove.

[0016] Preferably, scale lines are provided on the upper end of the clamp table near the two adjusting screw positions.

[0017] Working principle: When using this packaging fixture, first adjust it according to the size of the workpiece. During the adjustment process, first turn the adjusting screw according to the width of the workpiece to move the adjusting plate inside the limit slot, so that the distance between the adjusting plate and the front end inside the limit slot is equal to the width of the IGBT workpiece. Then adjust the positions of the two clamping mechanisms on the clamping table according to the length of the IGBT workpiece. During the adjustment, first turn the lower adjustment ring to move it downward. During its downward movement, the supporting force of the supporting spring on the limit ring will be reduced. At this time, the position of the clamping mechanism can be directly slid to both sides. During the adjustment process, the adjustment distance can be obtained through the indicator ring and the scale line. At this time, the IGBT workpiece can be placed inside the limit slot to start clamping;

[0018] Before clamping, first rotate the positioning rings on both sides to make them flush with the upper end of the IGBT workpiece, then start the hydraulic pump to pump the hydraulic oil in the reservoir into the oil outlet pipe, the oil outlet pipes are connected to the two connecting pipes respectively, so that the hydraulic oil will enter the connecting pipe, and enter the control pipe through the liquid inlet hose, and then enter the front power telescopic rod through the liquid inlet. At this time, the power telescopic rod will extend to drive the connecting ring to descend, and then drive the fixture plate to descend. In the process of the connecting ring descending, the control tube will be driven to descend synchronously. When the trigger column inside the control tube contacts the positioning ring below, it will be squeezed upward and start to move. At this time, the control column will move upward under the action of the trigger column and the inner spring. When it moves to the misalignment between the liquid inlet and the liquid inlet hose, the hydraulic oil will not be able to continue to enter the power telescopic rod. At this time, the fixture plate will immediately stop moving downward, and stop just at the upper end of the IGBT workpiece, and contact through the rubber pad to achieve the positioning function. At this time, the IGBT workpiece can be processed;

[0019] During this period, the hydraulic pump is set to intermittent oil supply, and hydraulic oil is injected into the interior of the buffer frame at regular intervals. When the hydraulic oil stops entering the interior of the power telescopic rod, the hydraulic oil will squeeze the sliding plate and compress the spring, and then continue to fill the interior of the buffer frame, avoiding a short circuit caused by the output end of the hydraulic pump being unable to output, and when clamping during the period when the hydraulic pump is not supplying, the sliding plate and the compression spring will provide power for the hydraulic oil, ultimately saving the cost of use.

[0020] When the clamping needs to be canceled after the processing is completed, first press the lower pressure plate downward, and the lower pressure plate will drive the lifting column to move downward. When the reflux port in the lifting column drops to the same position as the original position of the liquid inlet, the inside of the power telescopic rod will be connected with the reflux port. At this time, the power telescopic rod begins to shorten under the action of the spring inside it, and the hydraulic oil inside it will also flow back to the inside of the liquid storage tank through the reflux pipe. At the same time, when the power telescopic rod is shortened, it will also drive the connecting ring to move upward, thereby canceling the clamping work.

[0021] (III) Beneficial effects

[0022] The present invention provides a packaging fixture for IGBT production, which has the following beneficial effects:

[0023] 1. The present invention provides a packaging fixture for IGBT production. The packaging fixture uses a hydraulic pump to pump the hydraulic oil in the liquid storage tank to the oil outlet pipe, and then introduces it into two connecting pipes respectively. The hydraulic oil then flows into the control pipe and enters the inside of the power telescopic rod through the liquid inlet hose. Under the action of the hydraulic oil, the power telescopic rod extends, causing the connecting ring and the fixture plate to descend synchronously. During the descent process, the control pipe also descends until the trigger column in the control pipe contacts the lower positioning ring and is forced to move upward. At this time, the trigger column moves upward under the reaction force of the inner spring until a misalignment occurs between the liquid inlet and the liquid inlet hose, preventing the hydraulic oil from flowing into the power telescopic rod, thereby stopping the fixture plate from descending. This process ensures that the fixture plate is accurately positioned at the upper end of the IGBT workpiece, and contact is achieved through the rubber pad, which significantly improves the positioning accuracy. The design of the fixture plate does not require the participation of an intelligent control system, thereby enhancing the stability of the entire system.

[0024] 2. The present invention provides a packaging fixture for IGBT production. The fixture adopts an intermittent oil supply mechanism during operation, and the hydraulic oil is injected into the buffer chamber at a fixed time by a hydraulic pump. After the hydraulic oil stops being injected, the sliding plate will squeeze the spring due to the pressure of the hydraulic oil, thereby continuously keeping the hydraulic oil in the buffer chamber full. This mechanism effectively avoids the short circuit phenomenon caused by the inability of the hydraulic pump output end to continuously output. In addition, during the period when the hydraulic pump stops supplying oil, the sliding plate and the compression spring work together to provide power for the hydraulic oil, thereby achieving cost savings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the axial side of the present invention;

[0026] Figure 2 It is a bottom-up axial schematic diagram of the present invention;

[0027] Figure 3 It is a schematic diagram of the shaft side of the present invention without installing the supporting mechanism;

[0028] Figure 4 It is a schematic axial view of the clamp mechanism of the present invention;

[0029] Figure 5 It is a schematic cross-sectional view of the control tube of the present invention;

[0030] Figure 6 It is a schematic diagram of the axial side of the bearing mechanism of the present invention;

[0031] Figure 7 It is a cross-sectional axial schematic diagram of the buffer mechanism of the present invention.

[0032] Among them, 1. clamp mechanism; 2. bearing mechanism; 3. liquid storage tank; 4. buffer mechanism; 5. hydraulic pump; 101. upper retaining ring; 102. middle connecting column; 103. limit strip; 104. power telescopic rod; 105. connecting ring; 106. positioning ring; 107. indicator ring; 108. lower pressure plate; 109. return pipe; 110. control pipe; 111. liquid inlet hose; 112. connecting pipe; 113. limit ring; 114. support Spring; 115, adjusting ring; 116, lifting column; 117, reflux port; 118, liquid inlet; 119, control column; 120, inner spring; 121, trigger column; 201, limit slide rod; 202, limit groove; 203, adjusting screw rod; 204, adjusting plate; 205, adjusting slide groove; 206, lower support frame; 207, fixture table; 401, reset spring; 402, buffer frame; 403, sliding plate; 404, oil outlet pipe. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1-5As shown, the embodiment of the present invention provides a The packaging fixture for GBT production comprises a bearing mechanism 2, a liquid storage tank 3 is fixedly arranged at the bottom of the bearing mechanism 2, a hydraulic pump 5 is fixedly arranged at a position near the bottom of the bearing mechanism 2 on one side of the liquid storage tank 3, a buffer mechanism 4 is fixedly arranged at the upper end of the bearing mechanism 2, a clamp mechanism 1 is slidably arranged at one side of the bearing mechanism 2, the clamp mechanism 1 comprises an intermediate connecting column 102, an upper retaining ring 101 is fixedly arranged at the upper end of the intermediate connecting column 102, a limiting strip 103 is fixedly arranged at one side of the intermediate connecting column 102, a connecting ring 105 is slidably sleeved near the middle of the intermediate connecting column 102, a power telescopic rod 104 is fixedly arranged between the upper end of the connecting ring 105 and the upper retaining ring 101, the power telescopic rod 104 is hollow inside and a spring is fixedly connected between the upper and lower ends, a control tube 110 is penetrated between the upper and lower ends of the connecting ring 105 on one side, a touch column 121 is slidably penetrated at the lower end of the control tube 110, a control column 119 is slidably arranged at the middle of the control tube 110, and a control column 119 is slidably arranged at the middle of the control tube 110. 9 has a liquid inlet 118, and the control column 119 has inner springs 120 fixedly arranged at the upper and lower ends. The elastic force of the lower one of the two inner springs 120 is greater than the elastic force of the upper one. The upper end of the control column 119 is slidably provided with a lifting column 116, and the lower end of the lifting column 116 is fixedly connected to the upper end of the upper one of the two inner springs 120. The lifting column 116 has a reflux port 117, and the front end of the control column 119 has a hole on the upper side and is connected to one side of the power telescopic rod 104 through a pipeline. Inside the hole, a liquid inlet hose 111 is penetrated and arranged near the liquid inlet 118 on one side of the control tube 110, and a connecting pipe 112 is fixedly connected to the other end of the liquid inlet hose 111, and the other end of the connecting pipe 112 penetrates the bearing mechanism 2 and is fixedly connected to the oil outlet pipe 404, and the upper end of the lifting column 116 is connected to the reflux port 117 and penetrated by a reflux pipe 109, and the other end of the reflux pipe 109 is fixedly connected to the inside of the liquid storage tank 3, and a lower pressure plate 108 is fixedly arranged near the upper end of the lifting column 116;

[0035] Specifically, in the above-mentioned specific embodiment, during the clamping operation, the positioning rings 106 on both sides need to be rotated first to ensure that they are accurately aligned with the upper end of the IGBT workpiece. After this step is completed, the hydraulic pump 5 is started, and the hydraulic oil is pumped from the liquid storage tank 3 to the oil outlet pipe 404. The oil outlet pipe 404 is respectively connected to the two connecting pipes 112, and the hydraulic oil then flows into the connecting pipe 112. The hydraulic oil enters the control pipe 110 through the liquid inlet hose 111, and then enters the front end of the power telescopic rod 104 through the liquid inlet port 118. At this time, the power telescopic rod 104 extends, driving the connecting ring 105 and the clamping plate to descend synchronously. During the descent of the connecting ring 105, the control pipe 110 also descends synchronously. When the trigger column 121 in the control pipe 110 contacts the positioning ring 106 below, the trigger column 121 is forced to move upward and begins to move. Under the joint action of the trigger column 121 and the inner spring 120, the control column 119 moves upward. When the control column 119 moves to the position where the liquid inlet 118 and the liquid inlet hose 111 are misaligned, the hydraulic oil cannot continue to flow into the power telescopic rod 104. Therefore, the fixture plate stops moving downward and stops precisely at the upper end of the IGBT workpiece. The workpiece is precisely positioned through the contact of the rubber pad. After completing the above steps, the IGBT workpiece can be processed subsequently.

[0036] like Figure 4 As shown, a fixture plate is fixedly arranged inside the connecting ring 105, a rubber pad is fixedly arranged on the lower end of the fixture plate away from the middle connecting column 102, a positioning ring 106 is threadedly sleeved at a position near the lower end of the middle connecting column 102, an indicator ring 107 is fixedly arranged at the lower end of the middle connecting column 102, a limiting ring 113 is slidingly sleeved at a position near the lower end of the middle connecting column 102, two limiting rings 113 are axially symmetrically arranged at the lower end of the limiting ring 113, a supporting spring 114 is rotatably arranged at the lower end of the supporting spring 114, an adjusting ring 115 is rotatably arranged at the lower end of the supporting spring 114, and the adjusting ring 115 is threadedly sleeved on the lower end of the middle connecting column 102;

[0037] Specifically, in the above-mentioned specific embodiment, before using the packaging fixture, it is necessary to make detailed adjustments according to the precise size of the workpiece, and the position of the fixture mechanism 1 on the fixture table 207 can be adjusted according to the length of the IGBT workpiece. In this process, the lower adjustment ring 115 needs to be rotated to cause it to move downward. The descent of the adjustment ring 115 will cause the support force of the support spring 114 on the limit ring 113 to weaken. At this time, the opportunity of weakening the support force can be used to directly slide the middle connecting column 102 to both sides to achieve precise adjustment of the position of the fixture mechanism 1. During the adjustment process, the indicator ring 107 and the scale line should be used to accurately obtain the adjustment distance. After all the adjustment steps are accurately completed, the IGBT workpiece can be stably placed in the limit groove 202 to start the clamping operation.

[0038] like Figure 7As shown, the buffer mechanism 4 includes a buffer frame 402, a sliding plate 403 is slidably arranged inside the buffer frame 402, a return spring 401 is fixedly connected between the sliding plate 403 and one side of the buffer frame 402, and an oil outlet pipe 404 is penetrated through one side of the buffer frame 402;

[0039] Specifically, in the above-mentioned specific embodiment, in the process of performing the clamping task, the hydraulic pump 5 is configured as a periodic oil supply mode, that is, according to a predetermined time interval, an appropriate amount of hydraulic oil is periodically injected into the buffer box. This design ensures that when the hydraulic oil stops flowing into the power telescopic rod 104, the hydraulic oil can still maintain a continuous full state inside the buffer box by squeezing the sliding plate 403 and the compression spring. This mechanism effectively avoids the short circuit problem caused by the inability of the output end of the hydraulic pump 5 to output hydraulic oil. In addition, during the period when the hydraulic pump 5 stops supplying oil, when performing the clamping operation, the sliding plate 403 and the compression spring will work together to provide the necessary power support for the hydraulic oil. This innovative design not only ensures the stable operation of the equipment, but also significantly reduces the cost of use, achieving a dual improvement in economic benefits and efficiency.

[0040] like Figure 6 As shown, the bearing mechanism 2 includes a fixture table 207, and adjustment slots 205 are provided on both sides of the front and rear of the fixture table 207. Limiting slide bars 201 are fixedly provided inside two of the four adjusting slots 205. Two intermediate connecting columns 102 are slidably provided inside two of the four adjusting slots 205 near the position between the indicator ring 107 and the limiting ring 113. Two limiting slide bars 201 are respectively slidably provided inside them. A lower support frame 206 is fixedly provided at the lower end of the fixture table 207. A limiting slot 202 is provided at the upper end of the fixture table 207 near the middle position. An adjusting screw rod 203 is provided on the internal threaded sleeve near the rear side of the lower support frame 206 of the fixture table 207. An adjusting plate 204 is rotatably provided at the front end of the adjusting screw rod 203. The adjusting plate 204 is slidably provided inside the limiting slot 202. Scale lines are provided at the upper end of the fixture table 207 near the two adjusting screw rods 203.

[0041] Specifically, in the above-mentioned specific embodiment, firstly, according to the width dimension of the workpiece, by rotating the adjusting screw 203, it is ensured that the adjusting plate 204 can move freely in the limiting groove 202, so as to adjust the distance between the adjusting plate 204 and the front end of the limiting groove 202 to accurately correspond to the width of the IGBT workpiece, and when the clamp mechanism 1 slides on the clamp, the limiting slide rod 201 is respectively slidably arranged inside the middle connecting column 102, thereby effectively improving the stability of the clamp mechanism 1 during the adjustment process according to the length of the IGBT workpiece.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A packaging fixture for IGBT production, comprising a supporting mechanism (2), characterized in that: A liquid storage tank (3) is fixedly arranged at the bottom of the carrying mechanism (2), a hydraulic pump (5) is fixedly arranged at a position on one side of the bottom of the carrying mechanism (2) close to the liquid storage tank (3), a buffer mechanism (4) is fixedly arranged at the upper end of the carrying mechanism (2), and a clamp mechanism (1) is slidably arranged on one side of the carrying mechanism (2); The clamp mechanism (1) comprises an intermediate connecting column (102), an upper retaining ring (101) is fixedly arranged at the upper end of the intermediate connecting column (102), a limit strip (103) is fixedly arranged on one side of the intermediate connecting column (102), a connecting ring (105) is slidingly sleeved near the middle of the intermediate connecting column (102), a power telescopic rod (104) is fixedly arranged between the upper end of the connecting ring (105) and the upper retaining ring (101), and the power telescopic rod (104) is hollow inside and a spring is fixedly connected between the upper and lower ends; A control tube (110) is provided between the upper and lower ends of the connecting ring (105) on one side, a trigger column (121) is provided in a sliding manner through the lower end of the control tube (110), a control column (119) is provided in a sliding manner in the middle of the control tube (110), a liquid inlet (118) is provided in the control column (119), and inner springs (120) are fixedly provided at the upper and lower ends of the control column (119), the elastic force of the lower one of the two inner springs (120) being greater than the elastic force of the upper one, and the control column (119) is provided with a plurality of inner springs (120). A lifting column (116) is slidably provided at the upper end of the column (119), the lower end of the lifting column (116) is fixedly connected to the upper end of the two inner springs (120), a reflux port (117) is provided inside the lifting column (116), a hole is provided at the upper front end of the control column (119) and is connected to the hole provided on one side of the power telescopic rod (104) through a pipe, and a liquid inlet hose (111) is provided on one side of the control tube (110) near the liquid inlet port (118); The buffer mechanism (4) comprises a buffer frame (402), a sliding plate (403) is slidably arranged inside the buffer frame (402), a return spring (401) is fixedly connected between the sliding plate (403) and one side inside the buffer frame (402), and an oil outlet pipe (404) is arranged through one side of the buffer frame (402).

2. The packaging fixture for IGBT production according to claim 1, characterized in that: The other end of the liquid inlet hose (111) is fixedly connected to a connecting pipe (112), the other end of the connecting pipe (112) passes through the supporting mechanism (2) and is fixedly connected to the oil outlet pipe (404), the upper end of the interior of the lifting column (116) is connected to the reflux port (117) and is provided with a reflux pipe (109) passing through, the other end of the reflux pipe (109) is fixedly connected to the interior of the liquid storage tank (3), and a lower pressure plate (108) is fixedly provided near the upper end of the column body of the lifting column (116).

3. The packaging fixture for IGBT production according to claim 1, characterized in that: A clamp plate is fixedly arranged inside the connecting ring (105), a rubber pad is fixedly arranged on the lower end of the clamp plate away from the middle connecting column (102), a positioning ring (106) is provided on a threaded sleeve near the lower end of the middle connecting column (102), an indicator ring (107) is fixedly arranged on the lower end of the middle connecting column (102), a limiting ring (113) is provided on a sliding sleeve near the lower end of the middle connecting column (102), and two clamp mechanisms (1) are axially symmetrically arranged.

4. The packaging fixture for IGBT production according to claim 3, characterized in that: A support spring (114) is rotatably provided at the lower end of the limiting ring (113), and an adjustment ring (115) is rotatably provided at the lower end of the support spring (114). The adjustment ring (115) is threadedly sleeved on the lower end of the column body of the intermediate connecting column (102).

5. The packaging fixture for IGBT production according to claim 3, characterized in that: The bearing mechanism (2) comprises a fixture table (207), and the fixture table (207) is provided with adjustment slots (205) on both the front and rear sides, and two of the four adjustment slots (205) are fixedly provided with limit slide bars (201) inside, and the two intermediate connecting columns (102) are slidably arranged in two of the four adjustment slots (205) at a position between the indicator ring (107) and the limit ring (113), and the two limit slide bars (201) are respectively penetrated and slidably arranged inside.

6. The packaging fixture for IGBT production according to claim 5, characterized in that: A lower support frame (206) is fixedly arranged at the lower end of the clamping platform (207), a limiting groove (202) is provided at the upper end of the clamping platform (207) near the middle position, an adjusting screw rod (203) is provided with an internal threaded sleeve near the rear side of the clamping platform (207) near the lower support frame (206), an adjusting plate (204) is rotatably arranged at the front end of the adjusting screw rod (203), and the adjusting plate (204) is slidably arranged inside the limiting groove (202).

7. The packaging fixture for IGBT production according to claim 6, characterized in that: The upper end of the clamping platform (207) is provided with scale lines near the two adjusting screw rods (203).

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