CN219144134U - Heating workbench for wire bonding in semiconductor package - Google Patents

Abstract

The utility model discloses a heating workbench for wire bonding in semiconductor packaging, which comprises a base, a holding sleeve, a heat insulation protective sleeve, a heating assembly, a clamping assembly and a vacuum plate, wherein the base, the holding sleeve and the heat insulation protective sleeve are sequentially arranged from bottom to top, the clamping assembly and the vacuum plate are embedded into the heating assembly, the three are arranged inside the heat insulation protective sleeve, a lifting device is arranged on the base inside the holding sleeve, the heating assembly is arranged above the lifting device and can move up and down under the drive of the lifting device, the vacuum plate is arranged in the middle of the clamping assembly, and the clamping assembly can clamp and/or compress a semiconductor placed on the vacuum plate. The heating workbench is uniform in heating during working, convenient to clamp products, suitable for clamping various products and strong in expansibility. The height of the workbench can be accurately adjusted, the machine adjusting time is saved, and the efficiency is improved. Small volume and exquisite appearance, and is suitable for various manual bonding devices or independent application in the packaging or electronic industry.

Description

Heating workbench for wire bonding in semiconductor package

Technical Field

The utility model belongs to the technical field of semiconductor device packaging, and particularly relates to a heating workbench for wire bonding in semiconductor packaging.

Background

Wire bonding is one of the key processes in the packaging process of semiconductor devices. There are three types of wire bonding processes: thermal compression bonding, ultrasonic bonding, thermal compression ultrasonic bonding. Thermal compression ultrasonic bonding is particularly preferred because it is currently the dominant process in the industry and is employed by almost all bonding equipment. The principle is that on the basis of ultrasonic bonding, a welding head is pressed and the high-frequency vibration of the welding head drives a lead wire to generate heat in a friction way, so that the interaction between a welding surface and metal atoms of a contact surface of the lead wire is enhanced, plastic flow occurs and then cooling is performed, and a bonding welding process of an electronic bridge capable of passing through electrons is formed. In order to obtain good welding reliability and appearance requirements during wire bonding, welding quality is generally ensured by adjusting parameters such as welding pressure, welding power and the like. The device is also heated to enhance the bonding effect.

With the continuous alternation of packaging technology, the production efficiency is accelerated, and more automatic bonding equipment is widely used in packaging production. The automatic bonding device works in the same way as the manual bonding device, except that a number of automated functions are added. But for most small and medium packaging enterprises and new project teams, automatic equipment is expensive, various clamps are required for production, and product switching is time-consuming and labor-consuming. The manual bonding is still the preferred mode with the advantages of low cost, flexible operation and the like.

In the manual bonding apparatus, each vendor has its own designed workbench, and generally has a heating function, and the fixing manner of the device is generally a simple pressing or side clamping manner, and only has a single fixing manner. This type of attachment is generally applicable to common products. Once the customer product switches, the heating station attached to the device is not well suited for securing the product and cannot be bonded.

Many times, the problem of low research and development requirements is solved by adopting a temporary means of simple one-hand pressing (tweezers) and one-hand bonding operation. For mass-produced products, simple auxiliary fixtures are made and mounted on the table. The bonding requires that the product weld face must be maintained within a certain level and that heat is applied to ensure the reliability of the weld quality, however, the above methods are not entirely reliable.

In addition, equipment part parameters are often set or adjusted during welding due to product switching. In particular, the welding height is one, the working table of the equipment can only realize rough height adjustment, and an operator needs to continuously perform trial bonding on a sample product to determine whether the height is proper. Such a mode of operation is not only inefficient but also is empirically detrimental to quality and efficiency control.

Therefore, the workbench configured by the manual bonding equipment in the packaging industry has the following defects: 1. the compatibility is poor; 2. generally, a single fixing mode is adopted, and clamps are additionally added for different products; 3. the height adjustment cannot be fine-tuned; 4. the whole volume is large.

Disclosure of Invention

The utility model aims to: aiming at the defects of the prior art, the utility model provides a heating workbench for wire bonding in semiconductor packaging, which solves the problems of compatibility, incapability of accurately adjusting the height and the like, has small volume, exquisite appearance and strong universality, corresponds to various devices and can realize accurate height adjustment and rapid switching.

The technical scheme is as follows: the utility model provides a heating workbench for wire bonding in semiconductor encapsulation, includes the base, grips cover, thermal-insulated protective sheath, heating element, clamping assembly and processing platform, the base, grip cover and thermal-insulated protective sheath follow supreme preface setting down, clamping assembly and processing platform embedding heating element in, the three sets up inside thermal-insulated protective sheath, is equipped with elevating gear on the inside base of grip cover, and heating element sets up in the elevating gear top, can reciprocate under elevating gear's drive, and processing platform sets up in the middle of the clamping assembly, and clamping assembly can carry out centre gripping and/or compress tightly the action to the semiconductor of placing on the processing platform.

As a preferred, improved or specific embodiment:

the lifting device comprises a jacking column and an external knob, wherein the jacking column is arranged inside the holding sleeve, the jacking column is arranged vertically, the knob is connected with a connecting rod which is horizontally arranged and can horizontally move, a push rod which can swing up and down is arranged on the base, the connecting rod is connected with the push rod through a pin, the knob can drive the connecting rod to horizontally move through rotation, so that the push rod is driven to swing, and the jacking column is arranged above the push rod and can move up and down under the action of the swing of the push rod.

Further, the lifting device further comprises a fixing seat, a shaft sleeve and a bearing which are arranged in the holding sleeve, the fixing seat is fixed on the base, the connecting rod penetrates through the fixing seat, and the shaft sleeve and the bearing sleeve are sleeved outside the connecting rod.

Further, elevating gear still includes setting up at the inside hinge seat of gripping the cover and first round pin post, and the hinge seat is fixed on the base, and first round pin post passes the rotation hole on the hinge seat, and first round pin post is connected to the ejector pin, can use first round pin post as the axis of rotation and carry out the luffing motion.

Further, the connecting rod is connected with the ejector rod through a second pin, a sliding hole is formed in the ejector rod, and the second pin penetrates through the sliding hole.

Further, a fixing plate is fixedly connected above the jacking column; the periphery of the top column is provided with a support column, and the top column can move up and down in the support column; a dial is arranged near the knob.

The heat insulation protective sleeve is internally provided with a height-equal column, and the height-equal column is fixed at the top of the lifting device and can lift along with the lifting device; the outer wall of the heat insulation protective sleeve is provided with a wire harness fixing frame, and the wire harness fixing frame is provided with a wire harness protective sleeve.

The heating element includes hot plate and hot plate fixing base, and the hot plate setting is on the hot plate fixing base, and clamping assembly sets up in the bottom of hot plate fixing base to pass the hot plate, the processing platform sets up the central point on hot plate surface to can carry out heat exchange with the hot plate.

Further, a heating plate, a temperature detector and a heating plate fixing sleeve are arranged in the heating plate, and the heating plate is connected with an external power supply.

The clamping assembly comprises a push rod, a sliding top block, a horizontal sliding block and clamping plates, wherein the push rod penetrates through the outer wall of the heat insulation protective sleeve in a movable mode and is connected with the sliding top block which is horizontally arranged, the clamping plates are arranged at the top of the horizontal sliding block, the horizontal sliding block and the clamping plates are symmetrically arranged in two groups, the sliding top block penetrates through the middle of the two groups, the side walls of the two horizontal sliding blocks are in horizontal inclined surface contact mode, and the two horizontal sliding blocks are elastically connected with the heating assembly in the horizontal direction.

Further, a horizontal slider guide rod is arranged between the two horizontal sliders, two ends of the horizontal slider guide rod penetrate through the side walls of the two horizontal sliders, and the end faces of the horizontal slider guide rod are fixedly connected with the side walls of the heating assembly.

Or, the clamping assembly comprises a push rod, a sliding top block, a lifting sliding block and a pressing clamping jaw, wherein the push rod penetrates through the outer wall of the heat insulation protective sleeve in a movable mode and is connected with the sliding top block which is horizontally arranged, the pressing clamping jaw is arranged at the top of the lifting sliding block, the lifting sliding block and the pressing clamping jaw are symmetrically arranged in two groups, the sliding top block is arranged at the bottoms of the two lifting sliding blocks and is in vertical inclined surface contact with the bottom surfaces of the two lifting sliding blocks, and the two lifting sliding blocks are elastically connected with the heating assembly in the vertical direction.

Or the clamping assembly comprises a push rod, a sliding top block, a horizontal sliding block, clamping plates, lifting sliding blocks and a pressing clamping jaw, wherein the push rod penetrates through the outer wall of the heat insulation protective sleeve in a movable mode, is connected with the horizontally arranged sliding top block, the clamping plates are arranged at the top of the horizontal sliding block, the horizontal sliding block and the clamping plates are symmetrically arranged in two groups, the sliding top block penetrates through the middle of the two groups, and is in a horizontal inclined surface contact mode with the side walls of the two horizontal sliding blocks, and the two horizontal sliding blocks are elastically connected with the heating assembly in the horizontal direction; the clamping jaw that pushes down sets up at lifting slide top, and lifting slide and clamping jaw symmetry that pushes down set up two sets of, and the slip kicking block sets up in two lifting slide bottoms to be vertical inclined plane contact mode with the bottom surface of two lifting slide, two lifting slide and heating element in vertical direction elastic connection.

On the basis of the three schemes, as a preferable scheme, a sliding top block sliding rod is arranged at the bottom of the sliding top block, a strip-shaped arc-shaped groove matched with the bottom of the sliding top block and the bottom of the heating component is arranged at the bottom of the sliding top block, the sliding top block sliding rod is fixed in the strip-shaped arc-shaped groove, and the strip-shaped arc-shaped groove coincides with the central line of the bottom surface of the sliding top block. The center line is a center line along the connecting direction of the push rod and the sliding top block.

The holding sleeve is fixedly connected with the heat insulation protection sleeve, the heat insulation protection sleeve is fixedly connected with the lifting device, and the holding sleeve and the heat insulation protection sleeve can move up and down under the driving of the lifting device.

The processing platform is the vacuum board, and the vacuum board passes through the joint and connects the trachea, connects the setting inside thermal-insulated protective sheath, and its one end is connected with the vacuum board, and the trachea is connected to the other end, and the trachea extends to thermal-insulated protective sheath outside.

The beneficial effects are that: compared with the prior art, the heating workbench realizes product clamping and height adjustment through the connecting rod movement mechanism, and has compatibility and strong universality. The heating workbench is uniform in heating during working, convenient to clamp products, suitable for clamping various products and strong in expansibility. The height of the workbench can be accurately adjusted, the machine adjusting time is saved, and the efficiency is improved. In addition, the processing platform can also adopt the vacuum board that has the vacuum adsorption function, can realize the processing of jumbo size product, and the product is compatible diversified. The heating workbench has small volume and exquisite appearance, and is suitable for various manual bonding devices in the packaging or electronic industry or is independently suitable for use.

Drawings

FIG. 1 is a schematic view of the overall structure of a heating table according to the present utility model.

Fig. 2 is a schematic view of the internal structure of the lifting device in the heating workbench of the utility model.

FIG. 3 is a schematic diagram showing the connection mode of the ejector rod and the connecting rod in the lifting device in the heating workbench.

Fig. 4 is a schematic diagram of a supporting column of a lifting device in a heating workbench according to the utility model.

Fig. 5 is a schematic view of the external structure of the lifting device in the heating table of the utility model.

Figure 6 is a view showing the arrangement of the inner and outer parts of the insulating thermal protection sleeve in the heating workbench.

FIG. 7 is a schematic view of a heating assembly of the heating table of the present utility model.

FIG. 8 is a schematic view (semi-sectional view) showing the internal components of the heating assembly of the heating table according to the present utility model.

FIG. 9 is a schematic view of a clamping assembly of the heating table of the present utility model.

FIG. 10 is a schematic view (semi-sectional view) of a clamping assembly in a heating table according to the present utility model.

FIG. 11 is a schematic view of the structure of a sliding top block of a clamping assembly in a heating table according to the present utility model.

FIG. 12 is a schematic view of the vacuum plate connection part in the heating table of the present utility model.

Detailed Description

The present utility model will be further described below.

In the description of the present utility model, it should be understood that, if any, terms such as "upper," "lower," "left," "right," "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, only for convenience in describing the present utility model and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus the words describing the positional relationship in the drawings are merely for illustration and not to be construed as limiting the present patent.

Examples

A heating workbench for wire bonding in semiconductor packaging, as shown in fig. 1, the semiconductor packaging device comprises a base 1, a holding sleeve 2, a heat insulation protective sleeve 3, a heating component 4, a clamping component 5 and a vacuum plate 6, wherein the base 1, the holding sleeve 2 and the heat insulation protective sleeve 3 are sequentially arranged from bottom to top, the clamping component 5 and the vacuum plate 6 are embedded into the heating component 4, the three are arranged inside the heat insulation protective sleeve 3, a lifting device is arranged on the base 1 inside the holding sleeve 2, the heating component 4 is arranged above the lifting device and can move up and down under the driving of the lifting device, the vacuum plate 6 is arranged in the middle of the clamping component 5, and the clamping component 5 can clamp and/or compress a semiconductor placed on the vacuum plate 6. The holding sleeve 2 is fixedly connected with the heat insulation protective sleeve 3, the heat insulation protective sleeve 3 is fixedly connected with the lifting device, and the holding sleeve 2 and the heat insulation protective sleeve 3 can move up and down under the driving of the lifting device.

As shown in fig. 2, the lifting device includes a top column 200 and an external knob 201, the top column 200 is vertically arranged, the knob 201 is connected with a connecting rod 202 which is horizontally arranged and can horizontally move, a top rod 203 which can swing up and down is arranged on the base 1, the connecting rod 202 is connected with the top rod 203 through a pin, the knob 201 can drive the connecting rod 202 to horizontally move through rotation, so as to drive the top rod 203 to swing, and the top column 200 is arranged above the top rod 203 and can move up and down under the swinging action of the top rod 203.

The lifting device further comprises a fixed seat 204, a shaft sleeve 205 and a bearing 206 which are arranged in the holding sleeve 2, the fixed seat 204 is fixed on the base 1, the connecting rod 202 passes through the fixed seat 204, and the shaft sleeve 205 and the bearing 206 are sleeved outside the connecting rod 202.

The lifting device further comprises a hinge seat 207 and a first pin 208 which are arranged in the holding sleeve 2, the hinge seat 207 is fixed on the base 1, the first pin 208 penetrates through a rotating hole in the hinge seat 207, and the ejector rod 203 is connected with the first pin 208 and can swing up and down by taking the first pin 208 as a rotating shaft.

As shown in fig. 3, the connecting rod 202 and the ejector rod 203 are connected through a second pin 2010, a sliding hole 2011 is provided on the ejector rod 203, and the second pin 2010 passes through the sliding hole 2011.

As shown in fig. 4 and 5, a fixing plate 209 is fixedly connected above the top column 200, a support column 210 is arranged at the periphery, and the top column 200 can move up and down inside the support column 210; a dial 211 is provided near the knob 201, and the grip sleeve 2 can move with the lifting device, so that the relative displacement amount can be visually seen through the dial 211.

In the above structure, the grip sleeve 2 is connected with the base 1 by bolts, and has a main function of being held by a hand of a person so as to move the mating key and the machine to finish the bonding. In addition, an upgrade device for accurately adjusting the working height of the workbench is added in the part, the connecting rod 202 is driven to horizontally move by twisting the knob 201, so that the ejector rod 203 is driven to rotationally swing around the connecting rod pin 208 on the hinge base 207, the ejector rod 200 is driven to move up and down along the supporting column 210 (fixed on the base 1 through screws), and finally the fixing plate 209 is driven to move to achieve the aim of moving the workbench. The dial 211 is used to precisely adjust the elevation height.

As shown in fig. 6, the insulation protection sleeve 3 is internally provided with a contour post 300, and the contour post 300 is fixed on the top of the lifting device (in this embodiment, fixed on the fixing plate 209) and can lift along with the lifting device; the outer wall of the heat insulation protective sleeve 3 is provided with a wire harness fixing frame 301, and the wire harness fixing frame is provided with a wire harness protective sleeve 302. The heat insulation protection sleeve 3 is fixed on the holding sleeve 2 through the screw, meanwhile, the heat insulation protection sleeve 3 is fixedly connected with the fixing plate 209 through the screw, and when the height of the workbench is adjusted, the heat insulation protection sleeve 3 can also cover the heating component 4 along with displacement all the time, so that the complete heat insulation protection effect is achieved. The contour post 300 is used to support the heating assembly, and the wire harness fixing frame 301 is fixed on the heat insulation protection sleeve 3 through screws, and the part mainly plays a role in heat insulation protection to prevent scalding.

As shown in fig. 7, the heating assembly 4 includes a heating plate 400 and a heating plate holder 401, the heating plate 400 is provided on the heating plate holder 401, the clamping assembly 5 is provided at the bottom of the heating plate holder 401 and penetrates the heating plate 400, and the vacuum plate 6 is provided at the center position (fixed by screws, sealed by surface contact) of the surface of the heating plate 400 and can exchange heat with the heating plate 400. In this embodiment, the lower part of the heating plate fixing seat 401 is provided with the contour post 300 (fixedly connected with the heating plate fixing seat) and can be lifted under the action of the lifting device and the contour post 300. As shown in fig. 8, a heating plate 402, a temperature detector 403, and a heating plate fixing sleeve 404 are provided inside the heating plate 400, and the heating plate 402 is connected to an external power source. The heating plate 402 is electrified to generate heat, and then the heat is conducted to the clamping part vacuum plate 6 through the heating plate 400, so that the device is heated.

As shown in fig. 9 and 10, in order to achieve the clamping function, the clamping assembly 5 includes a push rod 500, a sliding top block 501, a horizontal sliding block 502 and a clamping plate 503, wherein the push rod 500 movably passes through the outer wall of the heat insulation protective sleeve 3, and is connected with the horizontally arranged sliding top block 501, the clamping plate 503 is arranged at the top of the horizontal sliding block 502, the horizontal sliding block 502 and the clamping plate 503 are symmetrically arranged in two groups, the sliding top block 501 passes through the middle of the two groups and is in a contact manner with the side walls of the two horizontal sliding blocks 502 in a horizontal inclined plane, and the two horizontal sliding blocks 502 are elastically connected with the heating assembly 4 (the heating plate fixing seat 401 in the embodiment) in the horizontal direction. In order to make the two horizontal sliders 502 slide more accurately in a straight line, a horizontal slider guide 506 is provided between the two horizontal sliders 502, both ends of the horizontal slider guide 506 pass through the side walls of the two horizontal sliders 502, and the end faces are fixedly connected with the side walls of the heating assembly 4 (in this embodiment, the side walls of the heating plate fixing seat 401). Springs are sleeved at two ends of the horizontal slider guide 506, one end of each spring contacts with the side wall of the heating plate fixing seat 401, and the other end contacts with the end face of a smaller inner diameter hole (the inner diameter of the hole for placing the spring is larger than the inner diameter of the hole penetrated by the horizontal slider guide 506) in the side wall or the through hole on the side wall of the horizontal slider 502, so that the elastic connection in the horizontal direction is formed.

For realizing the function of compressing tightly, clamping assembly 5 includes push rod 500, slip kicking block 501, lift slider 504 and pushes down clamping jaw 505, and push rod 500 passes the outer wall of thermal-insulated protective sheath 3 with the activity mode, is connected with the slip kicking block 501 that the level set up, pushes down clamping jaw 505 setting at lift slider 504 top, and lift slider 504 and push down clamping jaw 505 symmetry set up two sets of, and slip kicking block 501 sets up in two lift slider 504 bottoms to be vertical inclined plane contact mode with the bottom surface of two lift sliders 504, two lift sliders 504 are in vertical direction elastic connection with heating assembly 4. The bottoms of the two lifting sliding blocks 504 extend to two sides, the extending parts are provided with springs 508 which are vertically arranged, and the tops of the springs 508 are contacted with the bottom of the heating plate 400 to form the elastic connection in the vertical direction.

In order to make the sliding top block 501 move linearly more accurately and reduce friction, the bottom of the sliding top block 501 is provided with a sliding top block sliding rod 507, the bottom of the sliding top block 501 and the bottom of the heating component 4 (in this embodiment, the bottom of the heating plate fixing seat 401) are provided with matched elongated arc grooves, the sliding top block sliding rod 507 is fixed in the elongated arc grooves, and the elongated arc grooves coincide with the central line of the bottom surface of the sliding top block 501. The center line is a center line along the connecting direction of the push rod 500 and the sliding top block 501.

As shown in fig. 11, both side surfaces and the top surface of the sliding top block 501 have inclined surfaces, so that the horizontal sliding block 502 and the lifting sliding block 504 can be acted on simultaneously, and the clamping or pressing function can be realized simultaneously or independently.

The clamping assembly 5 works as follows: when the pressing-down mode is adopted, the push rod 500 is pressed, so that the sliding top block 501 is driven to move, and the lifting slide block 504 and the pressing-down clamping jaw 505 are driven to move up and down to realize the pressing function. When the side clamping mode is adopted, the push rod 500 is also pressed, so that the sliding top block 501 is driven to move, and the horizontal sliding block 502 and the clamping plate 503 are driven to horizontally slide to clamp the device. Either the hold down or side clamping mode is selected, and the clamping plate 503 and the hold down clamping jaw 505 are removed according to the actual situation when in particular use.

As shown in fig. 12, the vacuum plate 6 is further connected to an air pipe 601 through a connector 600, the connector 600 is disposed inside the heat insulation protective sleeve 3, one end of the connector is connected to the vacuum plate 6, the other end is connected to the air pipe 601, and the air pipe 601 extends to the outside of the heat insulation protective sleeve 3. The vacuum plate 6 has a vacuum suction function, and can be used for special products (such as a workpiece (product) which is smooth and exceeds a clamping or pressing stroke, and can be used for realizing a fixing function by vacuum suction).

The whole working mode of the heating workbench is as follows:

adjusting the height of the workbench: the knob 201 is rotated to drive the connecting rod 202 to move, the ejector rod 203 is pulled to rotate around the pin 208, the ejector column 200 is jacked, and the heating plate 400 and the heating plate fixing seat 401 are driven to move upwards or downwards together, so that the aim of adjusting the height is fulfilled. An accurate adjustment of 0.1mm can be achieved in combination with the dial.

And (3) product clamping: pressing the push rod 500 drives the slide block to move, so that the clamping plate 503 opens or presses down the clamping jaw 505 to lift, place the product on the vacuum plate 6, and then release the push rod 500, and the clamping plate 503 clamps or presses down the clamping jaw 505 to press down tightly.

The specific description is as follows: the clamping of the product is multiple options, one type of clamping jaw is selected according to the characteristics of the product when the clamping jaw is used, and the other type of clamping jaw is required to be removed. The utility model also provides a vacuum adsorption function, and is used for special products. The original pressing plate or clamping jaw can be removed for expansion use.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (12)

1. A heating workbench for wire bonding in semiconductor packaging is characterized by comprising a base (1), a holding sleeve (2), a heat insulation protective sleeve (3), a heating component (4), a clamping component (5) and a processing table (6), wherein the base (1), the holding sleeve (2) and the heat insulation protective sleeve (3) are sequentially arranged from bottom to top, the clamping component (5) and the processing table (6) are embedded into the heating component (4), the three are arranged inside the heat insulation protective sleeve (3), a lifting device is arranged on the base (1) inside the holding sleeve (2), the heating component (4) is arranged above the lifting device and can move up and down under the driving of the lifting device, the processing table (6) is arranged in the middle of the clamping component (5), and the clamping component (5) can clamp and/or compress a semiconductor placed on the processing table (6).

2. The heating workbench according to claim 1, wherein the lifting device comprises a jack post (200) arranged in the holding sleeve (2) and an external knob (201), the jack post (200) is vertically arranged, the knob (201) is connected with a connecting rod (202) which is horizontally arranged and can horizontally move, the base (1) is provided with a jack rod (203) which can vertically swing, the connecting rod (202) is connected with the jack rod (203) through a pin, the knob (201) can drive the connecting rod (202) to horizontally move through rotation, so as to drive the jack rod (203) to swing, and the jack post (200) is arranged above the jack rod (203) and can vertically move under the swinging action of the jack rod (203).

3. The heating workbench according to claim 2, wherein the lifting device further comprises a fixed seat (204), a shaft sleeve (205) and a bearing (206) which are arranged inside the holding sleeve (2), the fixed seat (204) is fixed on the base (1), the connecting rod (202) passes through the fixed seat (204), and the shaft sleeve (205) and the bearing (206) are sleeved outside the connecting rod (202);

the lifting device further comprises a hinge seat (207) and a first pin (208) which are arranged in the holding sleeve (2), the hinge seat (207) is fixed on the base (1), the first pin (208) penetrates through a rotating hole on the hinge seat (207), and the ejector rod (203) is connected with the first pin (208) and can swing up and down by taking the first pin (208) as a rotating shaft;

the connecting rod (202) is connected with the ejector rod (203) through a second pin (2010), a sliding hole (2011) is formed in the ejector rod (203), and the second pin (2010) penetrates through the sliding hole (2011);

a fixing plate (209) is fixedly connected above the top column (200); the periphery of the top column (200) is provided with a support column (210), and the top column (200) can move up and down in the support column (210); a dial (211) is provided near the knob (201).

4. The heating workbench according to claim 1, wherein the heat insulation protective sleeve (3) is internally provided with a contour post (300), and the contour post (300) is fixed at the top of the lifting device and can lift along with the lifting device; the outer wall of the heat insulation protective sleeve (3) is provided with a wire harness fixing frame (301), and the wire harness fixing frame is provided with a wire harness protective sleeve (302).

5. The heating table according to claim 1, wherein the heating assembly (4) comprises a heating plate (400) and a heating plate holder (401), the heating plate (400) is disposed on the heating plate holder (401), the clamping assembly (5) is disposed at the bottom of the heating plate holder (401) and penetrates the heating plate (400), and the processing table (6) is disposed at the center of the surface of the heating plate (400) and can exchange heat with the heating plate (400).

6. The heating table according to claim 5, wherein a heating plate (402), a temperature detector (403) and a heating plate fixing sleeve (404) are provided inside the heating plate (400), and the heating plate (402) is connected to an external power source.

7. The heating workbench according to claim 1, wherein the clamping assembly (5) comprises a push rod (500), a sliding top block (501), a horizontal sliding block (502) and a clamping plate (503), the push rod (500) movably penetrates through the outer wall of the heat insulation protection sleeve (3), is connected with the horizontally arranged sliding top block (501), the clamping plate (503) is arranged at the top of the horizontal sliding block (502), two groups of the horizontal sliding block (502) and the clamping plate (503) are symmetrically arranged, the sliding top block (501) penetrates through the middle of the two groups and is in horizontal inclined surface contact with the side walls of the two horizontal sliding blocks (502), and the two horizontal sliding blocks (502) are elastically connected with the heating assembly (4) in the horizontal direction.

8. The heating workbench according to claim 7, wherein a horizontal slider guide rod (506) is arranged between the two horizontal sliders (502), two ends of the horizontal slider guide rod (506) penetrate through the side walls of the two horizontal sliders (502), and the end faces are fixedly connected with the side walls of the heating assembly (4).

9. The heating workbench according to claim 1, wherein the clamping assembly (5) comprises a push rod (500), a sliding top block (501), a lifting sliding block (504) and a pressing clamping jaw (505), the push rod (500) movably penetrates through the outer wall of the heat insulation protection sleeve (3) and is connected with the sliding top block (501) which is horizontally arranged, the pressing clamping jaw (505) is arranged at the top of the lifting sliding block (504), two groups of the lifting sliding block (504) and the pressing clamping jaw (505) are symmetrically arranged, the sliding top block (501) is arranged at the bottoms of the two lifting sliding blocks (504) and is in vertical inclined surface contact with the bottom surfaces of the two lifting sliding blocks (504), and the two lifting sliding blocks (504) are elastically connected with the heating assembly (4) in the vertical direction.

10. The heating table according to any one of claims 7-9, wherein a sliding top block sliding rod (507) is arranged at the bottom of the sliding top block (501), a matched long strip-shaped arc-shaped groove is arranged at the bottom of the sliding top block (501) and the bottom of the heating component (4), the sliding top block sliding rod (507) is fixed in the long strip-shaped arc-shaped groove, and the long strip-shaped arc-shaped groove coincides with the central line of the bottom surface of the sliding top block (501).

11. The heating workbench according to claim 1, wherein the holding sleeve (2) is fixedly connected with the heat insulation protection sleeve (3), the heat insulation protection sleeve (3) is fixedly connected with the lifting device, and the holding sleeve (2) and the heat insulation protection sleeve (3) can move up and down under the driving of the lifting device.

12. A heating table according to claim 1, characterized in that the processing table (6) is a vacuum plate, which is connected to the air pipe (601) by means of a joint (600), the joint (600) being arranged inside the insulation protection sleeve (3), one end of which is connected to the vacuum plate and the other end of which is connected to the air pipe (601), the air pipe (601) extending outside the insulation protection sleeve (3).

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