Pressing tool

Abstract

The utility model provides a pressing tool which comprises a frame of a hollow-out structure, a pressing block and a pressing block. The bases are arranged at the two ends of the frame, and the bottoms of the bases downwards protrude out of the bottom of the frame; and the light-transmitting pressing plate is arranged at the bottom of the frame, at least corresponds to the hollow part of the frame, and is configured to press the membrane so as to tightly press the membrane onto the welding strip and the battery piece which are stacked below the light-transmitting pressing plate. According to the pressing tool, the diaphragm and the welding strip are pressed onto the battery piece through the light-transmitting pressing plate arranged at the bottom of the frame, so that effective pressing of the diaphragm and the welding strip is ensured. Due to the fact that the frame is of the hollow structure and the light-transmitting pressing plate has light transmission performance, welding laser, LED light or thermal infrared rays emitted by the fixing mechanism can penetrate through the light-transmitting pressing plate to irradiate the membrane and the welding strip, and the membrane and the welding strip are fixed to the battery piece.

Description

Technical Field

[0001] The present application relates to the field of battery production, and more specifically to a compacting tool. Background Art

[0002] A battery string is formed by stacking solder ribbons and cells according to a predetermined stringing pattern, with the solder ribbons fixedly connected to the grid lines of the cells. A common process for preparing a battery string is to use a conveyor mechanism to sequentially receive the cells and solder ribbons at a loading station, where they are stacked to form a battery string. The stacked battery string is then moved to a fixing station, where the cells and solder ribbons are fixed together using a fixing mechanism.

[0003] In the existing technology, in order to ensure that the welding ribbon is accurately connected to the grid line of the battery cell, a membrane needs to be laid on the stacked battery string, and the upper half of the welding ribbon needs to be pre-positioned on the upper surface of the battery cell through the membrane, and then the membrane and welding ribbon need to be fixed to the battery cell through a fixing mechanism.

[0004] After the film is placed on the solder ribbon and cell, a pressing tool is needed to press the film and solder ribbon onto the cell to prevent them from shifting during transport to the fixing mechanism. Existing pressing tools typically use pressing pins to press the solder ribbon onto the cell, which is ineffective in effectively pressing the film. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a pressing tool, which adopts the following technical solutions:

[0006] A pressing tool, comprising:

[0007] Frame: the frame is a hollow structure;

[0008] Bases are provided at both ends of the frame, with the bottoms of the bases protruding downward from the bottom of the frame;

[0009] A light-transmitting pressure plate is arranged at the bottom of the frame, and the light-transmitting pressure plate is arranged at least corresponding to the hollow part of the frame. The light-transmitting pressure plate is configured to press against the membrane to press the membrane onto the welding strips and battery cells stacked thereunder.

[0010] The clamping fixture of the present application presses the diaphragm and soldering ribbon onto the cell using a transparent pressing plate at the bottom of the frame, ensuring effective clamping of the diaphragm and soldering ribbon. Because the frame is a hollow structure and the transparent pressing plate is light-transmissive, the welding laser, LED light, or thermal infrared light emitted by the fixing mechanism can pass through the transparent pressing plate and irradiate the diaphragm and soldering ribbon, thereby fixing the diaphragm and soldering ribbon to the cell.

[0011] In some embodiments, the light-transmitting pressing plate is made of a light-transmitting material with a Shore hardness of 30-50.

[0012] The transparent pressure plate is made of a translucent material with a Shore hardness of 30-50. This ensures its transparency. Furthermore, it is flexible enough that when pressing the film and solder ribbon onto the cell, the plate elastically deforms at the location corresponding to the solder ribbon, allowing the ribbon and the film above it to sink into the plate, ultimately improving the stability of the plate's pressure on the ribbon and film.

[0013] In some embodiments, a plurality of clearance holes are provided on the light-transmitting pressing plate, and the clearance holes allow the suction cups for adsorbing the film to pass through.

[0014] Because the transparent pressure plate is equipped with a clearance hole for the suction cup that holds the film, the handling mechanism can first pick up the pressing fixture and ensure that the suction cup on the handling mechanism passes downward through the clearance hole. The handling mechanism then uses its suction cup to absorb the film. Finally, the handling mechanism simultaneously places the film and the pressing fixture onto the cell after the ribbon has been laid. In other words, the handling mechanism can simultaneously lay the film and the pressing fixture, improving production efficiency.

[0015] In some embodiments, the pressing tool also includes at least one row of first pressing pins arranged in the middle of the bottom surface of the frame along the length direction of the pressing tool, and a plurality of first through holes corresponding to each row of first pressing pins are provided in the middle of the transparent pressing plate, and each first pressing pin passes through the corresponding first through hole downwardly out of the transparent pressing plate; the pressing tool also includes two rows of second pressing pins respectively arranged at the edges of the bottom surface on both sides of the frame along the length direction of the pressing tool, and a plurality of second through holes corresponding to the second pressing pins are respectively provided at the edges of the two sides of the transparent pressing plate, and each second pressing pin passes through the corresponding second through hole downwardly out of the transparent pressing plate; each first pressing pin and the corresponding two second pressing pins on the same straight line along the width direction of the pressing tool are used to cooperate in pressing a welding strip, and the welding strip extends along the width direction of the pressing tool.

[0016] By setting pressure pins on the bottom surface of the frame, the welding ribbon can be pressed in a targeted manner to prevent the welding ribbon from shifting and ensure the quality of the battery cell string.

[0017] In some embodiments, the pressing surface position of the first pressing pin in the free state protrudes downward from the pressing surface position of the second pressing pin in the free state.

[0018] When the pressing tool is placed on the battery cell, the first pressing pins first contact the membrane and the solder ribbon, thus playing a pre-fixing role. Then, two rows of second pressing pins further press the membrane and the solder ribbon onto the battery cell.

[0019] In some embodiments, a pressure pin mounting portion is provided at a position on the frame corresponding to each first through hole and each second through hole, and the second pressure pin has the same structure as the first pressure pin; the first pressure pin includes a needle body and a pressure head, the needle body is detachably mounted on the pressure pin mounting portion, the pressure head is mounted at the lower end of the needle body and passes downward through the first through hole, and the pressure head is used to press the welding strip.

[0020] The first and second pressing needles are conveniently mounted on the frame to facilitate assembly and disassembly of the first and second pressing needles. The first and second pressing needles are configured to include a needle body and a pressing head. When the pressing head ages and fails, only the pressing head needs to be replaced, thus saving production costs.

[0021] In some embodiments, the pressure needle mounting portion is configured as an internal thread groove opened on the frame, the needle body is provided with an external thread matching the pressure needle mounting portion, the needle body is screwed into the pressure needle mounting portion, and a screw-connected operating groove is provided on the lower end surface of the needle body; a cavity with open ends is formed in the pressure head, the pressure head is sleeved on the lower end of the needle body, and the screw-connected operating groove is exposed in the cavity of the pressure head, and the pressure head can produce elastic deformation along the length direction of the first pressure needle.

[0022] Because the threaded operating groove at the lower end of the needle body is exposed in the cavity of the pressure head, the needle body can be screwed onto the pressure needle mounting portion or unscrewed from the pressure needle mounting portion through the threaded operating groove. In addition, because the pressure head is a hollow structure, when the pressure head presses down on the diaphragm and welding ribbon, it can produce elastic deformation along the length direction of the first pressure pin, thereby implementing elastic compression of the diaphragm and welding ribbon, improving the compression effect of the diaphragm and welding ribbon, and preventing pressure damage to the battery cell.

[0023] In some embodiments, the pressure needle mounting portion is configured as a through hole passing through the frame, and the needle body is slidably inserted into the pressure needle mounting portion; the upper end of the needle body extends upward from the pressure needle mounting portion, and a limiting retaining ring is provided at the upper end of the needle body. A first limiting step is provided on the needle body, and a second limiting step is formed in the pressure needle mounting portion above the first limiting step; a spring is sleeved on the needle body, and the upper end of the spring rests on the second limiting step, and the lower end of the spring rests on the first limiting step.

[0024] Since a spring capable of elastic deformation along the length direction of the first pressure needle is provided between the needle body and the pressure needle mounting portion, the pressure head can elastically press the diaphragm and the welding strip, thereby improving the pressing effect on the diaphragm and the welding strip and preventing pressure damage to the battery cell.

[0025] In some embodiments, the pressure head covers the lower end surface of the needle body, and the bottom of the pressure head forms a pressing surface for pressing the welding strip. A welding strip limiting groove is provided on the pressing surface of the pressure head, and the welding strip limiting groove extends along the width direction of the pressing tooling.

[0026] When the pressure head presses the diaphragm and the welding strip downward, the welding strip and the diaphragm on it are pressed into the welding strip limiting groove, thereby ultimately improving the pressing stability of the welding strip and the diaphragm and preventing the welding strip from shifting.

[0027] In some embodiments, the indenter is snap-connected to the lower end of the needle body, or the indenter is bonded to the lower end of the needle body.

[0028] Two simple ways of installing the indenter are provided, both of which can conveniently install the indenter to the lower end of the needle body and ensure the connection strength between the indenter and the needle body.

[0029] In some embodiments, the indenter is a flexible indenter.

[0030] The pressure head is flexible, so when the pressure head presses the diaphragm and the welding ribbon onto the battery cell, the pressure head produces elastic deformation, so that the welding ribbon and the diaphragm on it sink into the pressure head, and ultimately improves the pressing stability of the pressure head on the welding ribbon and the diaphragm.

[0031] In some embodiments, the light-transmitting pressing plate is snapped onto the frame, or the light-transmitting pressing plate is adhesively fixed to the bottom of the frame.

[0032] It is convenient for disassembly, assembly and maintenance of the light-transmitting pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of a pressing tool in one embodiment of the present application at one viewing angle;

[0034] Figure 2 This is a disassembled schematic diagram of a pressing tool in one embodiment of the present application;

[0035] Figure 3 This is a schematic structural diagram of a pressing tool in another embodiment of the present application from one viewing angle;

[0036] Figure 4 This is a schematic structural diagram of a pressing tool in another embodiment of the present application from another perspective;

[0037] Figure 5 for Figure 4 AA cross-sectional view;

[0038] Figure 6 A cross-sectional view of a first pressing needle in one embodiment of the present application;

[0039] Figure 7 A cross-sectional view of a first pressing needle in another embodiment of the present application;

[0040] Figure 8 A cross-sectional view of a first pressing needle in yet another embodiment of the present application;

[0041] Figure 9This is a cross-sectional view of a first pressing needle in another embodiment of the present application.

[0042] Figures 1 to 9 Included are:

[0043] Frame 1: supporting beam 11, reinforcing rib 12;

[0044] Base 2;

[0045] Transparent pressing plate 3: yield hole 31;

[0046] First pressing needle 4: needle body 41, pressing head 42, screw operation groove 43, cavity 44, limiting retaining ring 45, first limiting step 46, second limiting step 47, spring 48, welding strip limiting groove 49;

[0047] Second pressing needle 5;

[0048] Press needle mounting portion 6. DETAILED DESCRIPTION

[0049] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0050] Figures 1 to 2 FIG. 1 shows a pressing tool in one embodiment of the present application. Figures 3 and 4 FIG. 2 shows a pressing tool in another embodiment of the present application. Figures 1 to 4 As shown, the pressing tool in the embodiment of the present application includes:

[0051] Frame 1, frame 1 is a hollow structure. For example, Figure 1 As shown in FIG, the frame 1 includes three supporting beams 11 arranged side by side and two reinforcing ribs 12 connected between adjacent supporting beams 11.

[0052] The bases 2 are arranged at both ends of the frame 1 , and the bottoms of the bases 2 protrude downward from the bottom of the frame 1 .

[0053] A transparent pressure plate 3 is provided at the bottom of the frame 1, and the transparent pressure plate 3 is provided at least corresponding to the hollow portion of the frame 1. The transparent pressure plate 3 is configured to press against the diaphragm to press the diaphragm onto the solder strips and battery cells stacked thereunder.

[0054] The pressing tool in the embodiment of the present application presses the diaphragm onto the stacked solder strips and battery cells thereunder by means of a transparent pressing plate 2 provided at the bottom of the frame 1, so as to ensure effective pressing of the diaphragm and the solder strips.

[0055] Since the frame 1 is a hollow structure and the transparent pressure plate 3 is translucent, the welding laser, LED light or thermal infrared emitted by the fixing mechanism can pass through the transparent pressure plate 3 and irradiate the membrane and the welding strip to fix the membrane and the welding strip on the battery cell.

[0056] Optionally, the light-transmitting pressing plate 3 is made of a light-transmitting material with a Shore hardness of 30-50, such as silicone or PVC. This ensures the light transmittance of the light-transmitting pressing plate 3 while also providing sufficient flexibility. When the light-transmitting pressing plate 3 presses the diaphragm onto the stacked solder ribbon and solar cell below, the light-transmitting pressing plate 3 is elastically deformed at the location corresponding to the solder ribbon, causing the solder ribbon and the diaphragm above it to sink into the light-transmitting pressing plate 3. This ultimately improves the stability of the light-transmitting pressing plate 3's pressing of the diaphragm and solder ribbon, preventing the solder ribbon from shifting.

[0057] Optionally, a plurality of clearance holes 31 are provided on the light-transmitting pressing plate 3 , and the clearance holes 31 are used for suction cups for adsorbing the film to pass through.

[0058] Because the transparent pressure plate 3 is provided with a clearance hole 31 for the suction cup that absorbs the film to pass through, in this way, when implementing the process of laying the battery cells, solder ribbons and membranes into a string, after laying the solder ribbons on the battery cells, the conveying mechanism can first pick up the pressing tool and ensure that the suction cup on the conveying mechanism passes downward through the clearance hole 31. Subsequently, the conveying mechanism uses the suction cup on it to absorb the membrane. Finally, the conveying mechanism simultaneously places the membrane and the pressing tool on the battery cell with the solder ribbon laid. In other words, the conveying mechanism achieves the simultaneous laying of the membrane and the pressing tool, improving production efficiency.

[0059] Figures 1 to 2 The pressing fixture in the illustrated embodiment only presses the diaphragm onto the stacked solder strips and solar cells thereunder via the transparent pressing plate 3 , that is, both the solder strips and the diaphragm are pressed and positioned via the transparent pressing plate 3 .

[0060] Therefore, when the transparent pressing plate 3 ages and loses its flexibility, and cannot effectively press the welding ribbon and the diaphragm, the transparent pressing plate 3 can be replaced, thereby saving the maintenance cost of the pressing tool. To further facilitate the replacement of the transparent pressing plate 3, the transparent pressing plate 3 can be optionally snapped onto the frame 1, or the transparent pressing plate 3 can be adhesively fixed to the bottom of the frame 3.

[0061] Since the compression and positioning of the welding strips and the diaphragm are only implemented by the transparent pressure plate 3, in specific applications, it is necessary to select a transparent pressure plate 3 of appropriate thickness according to actual conditions, so that the weight of the transparent pressure plate 3 is moderate to ensure the compression and positioning effect of the welding strips and the diaphragm while preventing pressure damage to the battery cell.

[0062] In order to implement targeted compression of the soldering ribbon, ensure that the soldering ribbon remains at the initial placement position (for example, on the target grid line of the cell), such as Figures 3 and 4 As shown, optionally, the pressing tool in the embodiment of the present application further includes at least one row of first pressing pins 4 arranged in the middle of the bottom surface of the frame 1 along the length direction of the pressing tool (such as the X direction), and the middle part of the transparent pressing plate 3 is provided with a plurality of first through holes corresponding to each row of first pressing pins 4, and each first pressing pin 4 passes downward through the corresponding first through hole to exit the transparent pressing plate 3. The pressing tool further includes two rows of second pressing pins 5 respectively arranged at the bottom surface edges of both sides of the frame 1 along the length direction of the pressing tool, and a plurality of second through holes corresponding to the second pressing pins 5 are respectively provided at the edges of both sides of the transparent pressing plate 3, and each second pressing pin 5 passes downward through the corresponding second through hole to exit the transparent pressing plate 3.

[0063] like Figure 4 As shown in the figure, each first pressing pin 4 and the corresponding two second pressing pins 5 that are on the same straight line along the width direction of the pressing tool (such as the Y direction) are used to cooperate to press a solder ribbon 100, and the solder ribbon 100 extends along the width direction of the pressing tool. It should be noted that in actual production, there are multiple solder ribbons laid on the battery cell. For the sake of simplicity, Figure 4 Only one soldering ribbon 100 is shown.

[0064] also, Figures 3 and 4 In this embodiment, only the pressing ends of the first and second pressing pins 4 and 5 extend beyond the transparent pressing plate 3. Therefore, when the pressing tool is pressed onto the cell, the transparent pressing plate 3 can still contact the diaphragm. In other words, the transparent pressing plate 3 cooperates with the first and second pressing pins 4 and 5 to compress and position the diaphragm and solder ribbon.

[0065] like Figure 5 As shown, optionally, the pressing surface of the first pressing pin 4 in the free state protrudes downward from the pressing surface of the second pressing pin 5 in the free state. In other words, when the first pressing pin 4 and the second pressing pin 5 are not pressing the welding strip, the pressing surface of the first pressing pin 4 is lower than the pressing surface of the second pressing pin 5.

[0066] By configuring the first and second pressing pins 4 and 5 as described above, when the pressing tool is placed on the cell, the first pressing pins 4 first contact the diaphragm and solder ribbon, thereby providing a pre-fixed position. Subsequently, the two rows of second pressing pins 5 further press the diaphragm and solder ribbon onto the cell, improving the pressing and positioning effect.

[0067] It should be noted that Figure 5The position of the pressing surface of the first pressing needle 4 is only schematic and does not represent the position during specific setting. It is only necessary to ensure that the pressing surface of the first pressing needle 4 is lower than the pressing surface of the second pressing needle 5, and after the pressing tool is placed on the diaphragm and the stacked battery cells and welding strips, the pressing surface of the first pressing needle 4 and the pressing surface of the second pressing needle 5 will eventually be on the same plane.

[0068] like Figures 5 to 8 As shown, optionally, a pressure needle mounting portion 6 is provided at a position corresponding to each first through hole and each second through hole on the frame 1. The second pressure needle 5 has the same structure as the first pressure needle 4. Taking the first pressure needle 4 as an example, it includes a needle body 41 and a pressure head 42. The needle body 41 is detachably mounted on the pressure needle mounting portion 6. The pressure head 42 is mounted at the lower end of the needle body 41 and passes downward through the first through hole. The pressure head 42 is used to press the welding strip.

[0069] The frame 1 is provided with a pressure needle mounting portion 6, which facilitates the assembly and disassembly of the first pressure needle 4 and the second pressure needle 5. The first pressure needle 4 and the second pressure needle 5 are configured to include a needle body 41 and a pressure head 42. When the pressure head 42 ages and fails, only the pressure head 42 needs to be replaced, saving production costs.

[0070] Figures 5 and 6 In the illustrated embodiment, the pressure needle mounting portion 6 is configured as an internal thread groove opened on the frame 1, and the needle body 41 is provided with an external thread matching the pressure needle mounting portion 6. The needle body 41 is screwed into the pressure needle mounting portion 6, and the lower end surface of the needle body 41 is provided with a screw-on operating groove 43, which can be, for example, a hexagonal inner groove. A cavity 44 with two open ends is formed in the pressure head 42. The pressure head 42 is sleeved on the lower end of the needle body 41, and the screw-on operating groove 43 is exposed in the cavity 44 of the pressure head 42. The pressure head 42 can produce elastic deformation along the length direction of the first pressure needle 4.

[0071] Since the threaded operating groove 43 arranged at the lower end of the needle body 41 is exposed in the cavity 44 of the pressure head 42, the screwing tool (such as an external hexagonal wrench) can be extended from the bottom to the top into the cavity 44, and the needle body can be screwed through the threaded operating groove 43, so that the needle body 41 can be tightened to the pressure needle mounting part 6, or the needle body 41 can be unscrewed from the pressure needle mounting part 6.

[0072] Furthermore, because the pressure head 42 is hollow, it can produce elastic deformation along the length of the first pressure pin 4 when pressing downward on the diaphragm and solder ribbon, thereby elastically pressing the diaphragm and solder ribbon, improving the compression effect on the diaphragm and solder ribbon and preventing pressure damage to the battery cell. In addition, because the pressure head 42 is compressed, the transparent pressure plate 3 can contact the diaphragm to implement compression of the diaphragm and solder ribbon.

[0073] Figure 7 and Figure 8In the illustrated embodiment, the press needle mounting portion 6 is configured as a through hole penetrating the frame, and the needle body 41 is slidably inserted into the press needle mounting portion 6. The upper end of the needle body 41 extends upward from the press needle mounting portion 6, and a limiting retaining ring 45 is provided at the upper end of the needle body 41. A first limiting step 46 is provided on the needle body 41, and a second limiting step 47 is formed in the press needle mounting portion 6 above the first limiting step 46. A spring 48 is sleeved on the needle body 41, and the upper end of the spring 48 abuts against the second limiting step 47, and the lower end of the spring 48 abuts against the first limiting step 46.

[0074] Because a spring 48 capable of elastically deforming along the length of the first pressing pin 4 is disposed between the pin body 41 and the pressing pin mounting portion 6, the pressing head 42 can elastically compress the diaphragm and the soldering ribbon by heating them, thereby enhancing the compression effect on the diaphragm and the soldering ribbon and preventing pressure damage to the cell. Furthermore, when the pressing head 42 is compressed, it retracts upward, allowing the transparent pressing plate 3 to contact the diaphragm, thereby compressing the diaphragm and the soldering ribbon.

[0075] Figure 7 and Figure 8 In the illustrated embodiment, the indenter 42 covers the lower end surface of the needle body 41, and the bottom of the indenter 42 forms a pressing surface for pressing the welding strip. Compared with the hollow indenter in the previous embodiment, the indenter 42 covering the lower end surface of the needle body 41 has better wear resistance, thereby extending the service life of the indenter 42.

[0076] Optionally, the pressing head 42 is covered on the lower end surface of the needle body 41 by snapping or bonding.

[0077] like Figure 8 As shown, the pressing surface of the pressing head 42 is further provided with a welding strip retaining groove 49, which extends along the width direction of the pressing tool. Thus, when the pressing head 42 presses the diaphragm and welding strip downward, the welding strip and the diaphragm above it are pressed into the welding strip retaining groove 49, thereby further improving the pressing stability of the pressing head 42 on the welding strip and diaphragm and preventing the welding strip from shifting.

[0078] like Figure 9 As shown, a welding tape limiting groove 49 can also be provided on the lower end surface of the needle body 41. Similarly, the welding tape limiting groove 49 extends along the width direction of the pressing tool. In this way, when the pressure head 42 presses the diaphragm and welding tape downward, the portion of the pressure head 42 corresponding to the welding tape limiting groove 49 sinks inward into the welding tape limiting groove 49, and the welding tape and the diaphragm thereon sink into the recessed portion of the pressure head 42, thereby improving the compression stability of the pressure head 42 on the welding tape and diaphragm and preventing the welding tape from shifting. Of course, in order to ensure that the portion of the pressure head 42 corresponding to the welding tape limiting groove 49 can sink into the welding tape limiting groove 49 and form a recessed portion that wraps the welding tape and the diaphragm thereon, the thickness and flexibility of the pressure head need to be adaptively selected.

[0079] Optionally, the pressure head 42 is a flexible pressure head. When the pressure head 42 presses the diaphragm and the soldering ribbon onto the battery cell, the pressure head produces elastic deformation, so that the soldering ribbon and the diaphragm thereon sink into the pressure head 42, thereby improving the pressing stability of the pressure head on the soldering ribbon and the diaphragm.

[0080] The above description of the present application is sufficiently detailed and has certain particularities. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and that all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, not by the above description in the embodiments. Furthermore, the embodiments mentioned in the present application are not limited to being implemented individually, and some embodiments can also be implemented in combination.

Claims

1. A pressing tool, characterized in that: The pressing tool comprises: A frame having a hollow structure; Bases are provided at both ends of the frame, with bottoms of the bases protruding downward from the bottom of the frame; A light-transmitting pressure plate is arranged at the bottom of the frame, and the light-transmitting pressure plate is arranged at least corresponding to the hollow part of the frame. The light-transmitting pressure plate is configured to press against the membrane to press the membrane onto the welding strips and battery cells stacked thereunder.

2. The pressing tool according to claim 1, characterized in that: The light-transmitting pressing plate is made of a light-transmitting material with a Shore hardness of 30-50.

3. The pressing tool as claimed in claim 1, wherein the feature is that The light-transmitting pressing plate is provided with a plurality of clearance holes, and the suction cups for adsorbing the membrane pass through the clearance holes.

4. The pressing tool according to any one of claims 1 to 3, characterized in that: The pressing tool further includes at least one row of first pressing pins arranged in the middle of the bottom surface of the frame along the length direction of the pressing tool, and a plurality of first through holes corresponding to each row of first pressing pins are provided in the middle of the transparent pressing plate, and each first pressing pin passes through the corresponding first through hole downward and out of the transparent pressing plate; The pressing tool further includes two rows of second pressing pins respectively arranged at the bottom edge of both sides of the frame along the length direction of the pressing tool, and a plurality of second through holes corresponding to the second pressing pins are respectively provided at the edges of both sides of the transparent pressing plate, and each second pressing pin passes through the corresponding second through hole downward and out of the transparent pressing plate; Each of the first pressing pins and the corresponding two second pressing pins that are on the same straight line along the width direction of the pressing tool are used to cooperate to press a welding ribbon, and the welding ribbon extends along the width direction of the pressing tool.

5. The pressing tool according to claim 4, characterized in that: The pressing surface position of the first pressing pin in the free state protrudes downward from the pressing surface position of the second pressing pin in the free state.

6. The pressing tool according to claim 4, characterized in that: A pressure pin mounting portion is provided on the frame at a position corresponding to each of the first through holes and each of the second through holes, and the second pressure pin has the same structure as the first pressure pin; The first pressing needle includes a needle body and a pressing head. The needle body is detachably mounted on the pressing needle mounting portion. The pressing head is mounted on the lower end of the needle body and passes downward through the first through hole. The pressing head is used to press the welding strip.

7. The pressing tool according to claim 6, characterized in that: The pressure needle mounting portion is configured as an internal thread groove opened on the frame, the needle body is provided with an external thread matching the pressure needle mounting portion, the needle body is screwed into the pressure needle mounting portion, and a screw connection operation groove is provided on the lower end surface of the needle body; A cavity with two open ends is formed in the pressure head. The pressure head is sleeved on the lower end of the needle body. The threaded operation groove is exposed in the cavity of the pressure head. The pressure head can generate elastic deformation along the length direction of the first pressure needle.

8. The pressing tool according to claim 6, characterized in that: The pressure needle mounting portion is configured as a through hole penetrating the frame, and the needle body is slidably inserted into the pressure needle mounting portion; The upper end of the needle body extends upward from the pressure needle mounting portion, a limit retaining ring is provided on the upper end of the needle body, a first limit step is provided on the needle body, and a second limit step is formed in the pressure needle mounting portion and is located above the first limit step; A spring is sleeved on the needle body, the upper end of the spring abuts against the second limiting step, and the lower end of the spring abuts against the first limiting step.

9. The pressing tool according to claim 8, characterized in that: The pressing head covers the lower end surface of the needle body, and the bottom of the pressing head forms a pressing surface for pressing the welding strip. A welding strip limiting groove is provided on the pressing surface of the pressing head, and the welding strip limiting groove extends along the width direction of the pressing tool.

10. The pressing tool according to claim 6, characterized in that: The press head is snap-connected to the lower end of the needle body, or the press head is bonded to the lower end of the needle body.

11. The pressing tool according to claim 6, characterized in that: The pressure head is a flexible pressure head.

12. The pressing tool according to claim 1, wherein: The light-transmitting pressing plate is buckled on the frame, or the light-transmitting pressing plate is adhesively fixed to the bottom of the frame.

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