Extrusion mechanism of single-sided anti-static carrier tape production machine and carrier tape production machine

Abstract

An extrusion mechanism of a single-face anti-static carrier tape machine comprises a forming die head, and the two ends of the forming die head are the input end and the output end respectively. A main material runner, an auxiliary material runner and a forming runner are arranged in the forming die head; the main material runner comprises a main material input section and a main material output section which are communicated together, and the auxiliary material runner comprises an auxiliary material input section and an auxiliary material output section which are communicated together; the main material input section and the auxiliary material input section both penetrate to the input end, and the main material output section and the auxiliary material output section both communicate with the forming runner. The included angle between the main material output section and the auxiliary material output section is an acute angle; and only one main material runner and only one auxiliary material runner are arranged. The invention further provides a carrier tape production machine using the extrusion mechanism. Compared with the prior art, the extrusion mechanism provided by the invention can produce the carrier tape with one anti-static side, the cost of the carrier tape is lower, and meanwhile, the structure of the forming die head of the extrusion mechanism is optimized, so that the structure is simpler.

Description

Technical Field

[0001] This invention belongs to the technical field of carrier tape extrusion mechanism, specifically relating to an extrusion mechanism for a single-sided antistatic carrier tape machine, and a carrier tape production machine using the extrusion mechanism. Background Technology

[0002] As the core material for packaging electronic components, the anti-static properties of carrier tape directly determine the safety of precision components (such as chips and capacitors) during transportation, storage, and automated production.

[0003] Currently, the mainstream carrier tape in the industry adopts a structure of PC base layer plus double-sided modified PS antistatic composite layer. Specifically, a PS layer is laminated on both sides of the PC base layer. This double-sided composite structure can effectively prevent electrostatic risks and improve reliability.

[0004] However, with the development of segmented applications in the electronics manufacturing industry, the market demand for carrier tapes is showing a trend of differentiation. Not all applications require double-sided anti-static properties; anti-static properties can be achieved by laminating a PS layer on only one side of the PC layer. For example, if the front of the carrier tape has a PS layer, and electronic components are placed in the receiving slot of this layer, anti-static effects can be achieved solely through the PS layer on the front, even if the back of the carrier tape does not have a PS layer. However, in current applications, carrier tapes with a double-sided anti-static structure are still used. Compared to single-sided anti-static carrier tapes, double-sided anti-static carrier tapes require an additional layer of PS composite material, significantly increasing material costs and reducing product market competitiveness. At the same time, the production process requires ensuring that the two PS layers are simultaneously laminated onto the PC layer, which places higher demands on the manufacturing process and increases the defect rate. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an extrusion mechanism for a single-sided antistatic carrier tape machine.

[0006] To achieve the above objectives, the present invention discloses an extrusion mechanism for a single-sided antistatic carrier tape machine, comprising a forming die head, wherein the two ends of the forming die head are an input end and an output end, respectively; the forming die head is provided with a main material flow channel, a secondary material flow channel and a forming flow channel; The main material flow channel includes a main material input section and a main material output section connected together, and the auxiliary material flow channel includes an auxiliary material input section and an auxiliary material output section connected together; both the main material input section and the auxiliary material input section extend to the input end, and both the main material output section and the auxiliary material output section are connected to the forming flow channel; the included angle between the main material output section and the auxiliary material output section is an acute angle; There is only one main material flow channel and one auxiliary material flow channel.

[0007] Preferably, the included angle between the main material output section and the auxiliary material output section is 35°~55°.

[0008] Preferably, the forming die head includes a die head body, an upper die lip cover, and a lower die lip cover; One end of the die head body is the input end, and the other end of the die head body is provided with a composite tip; the main material flow channel is a direct flow channel, and the main material output section is located at the sharp corner of the composite tip; The upper outer wall and lower outer wall of the composite tip are respectively a first inclined surface and a second inclined surface. The first inclined surface and the second inclined surface are both inclined towards the main material flow channel and along the flow direction of the main material. The first inclined surface and the second inclined surface are symmetrically arranged about the main material flow channel. The upper mold lip and the lower mold lip are respectively fixedly connected to the upper and lower sides of the mold head body; the upper mold lip is provided with a third inclined surface, which is opposite to the first inclined surface and forms the auxiliary material output section between them; the lower mold lip is provided with a fourth inclined surface, which abuts against the third inclined surface; the forming flow channel is formed between the bottom surface of the upper mold lip and the top surface of the lower mold lip.

[0009] Preferably, the auxiliary material input section is a channel, the width of the auxiliary material input section is smaller than the width of the auxiliary material output section, and the width of the auxiliary material output section is adapted to the width of the forming flow channel; The die head body has a concave portion above the first inclined surface. The concave portion is recessed towards the inlet side of the outlet of the auxiliary material input section. The bottom of the concave portion is connected to the auxiliary material output section. The upper mold lip cover is provided with a sealing part, and the bottom and side surfaces of the sealing part abut against the bottom and side surfaces of the concave part.

[0010] Preferably, the lower mold lip cover has a groove on the surface that contacts its top surface outlet side. The groove extends through the width of the lower mold lip cover and is located near the top surface outlet side of the lower mold lip cover, thereby separating the outlet position of the lower mold lip cover into an adjustment section. It also includes an adjusting component, which is fixedly connected to the lower mold lip cover. The adjusting component and the adjusting part are pressed together to adjust the distance between the adjusting part and the bottom surface of the lower mold lip cover.

[0011] Preferably, the adjusting component is an adjusting bolt, and there are multiple adjusting bolts. The multiple adjusting bolts are spaced apart along the width direction of the lower mold lip cover, and the end of each adjusting bolt extends into the groove and abuts against the adjusting part.

[0012] Preferably, the main material output section is located inside the composite tip and extends through both sides of the composite tip in the width direction; The forming die head also includes a side sealing plate and a side pressure plate; there are two side sealing plates and two side pressure plates; the two side sealing plates are respectively disposed on both sides of the composite tip in the width direction; the two side pressure plates are respectively fixedly connected to both sides of the die head body and fixedly connected to the upper die lip and the lower die lip; the side sealing plates and the corresponding side pressure plates are pressed together, so that the side pressure plates seal and press against the side of the composite tip.

[0013] The present invention also provides a single-sided antistatic carrier tape machine using the extrusion mechanism of the above-described single-sided antistatic carrier tape machine.

[0014] A single-sided antistatic carrier tape machine includes the extrusion mechanism of the single-sided antistatic carrier tape machine as described above.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: With only one main material flow channel and one secondary material flow channel, from the perspective of the products produced by this structure, the PS layer is laminated only on one side of the PC layer. Compared to carrier tapes with two PS layers, this significantly reduces the amount of PS composite material used, thus lowering material costs. For applications where anti-static function can be achieved with only a single-sided PS layer, i.e., a single-sided anti-static carrier tape, this carrier tape is more cost-effective and more competitive in the market. From the perspective of the molding die head structure, setting only one secondary material flow channel simplifies the internal structure of the molding die head compared to setting two secondary material flow channels, significantly reducing the difficulty of die head manufacturing. From the perspective of the carrier tape production process, existing molding dies require ensuring the consistency of the lamination process on both sides of the PC base layer when laminating PS material, which has high production process requirements and is difficult to debug equipment. The molding die head of this project only laminates the PS layer on one side of the PC layer, eliminating the requirement for consistent lamination of PS composite material on both sides, significantly reducing processing difficulty. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the extrusion mechanism of the single-sided antistatic carrier tape machine in an embodiment. Figure 2 for Figure 1 A three-dimensional exploded view of the extrusion mechanism of a single-sided antistatic carrier tape machine; Figure 3 for Figure 1 A top view of the extrusion mechanism of a single-sided antistatic carrier tape machine; Figure 4 for Figure 3 Sectional view of section AA; Figure 5 for Figure 2 A three-dimensional structural diagram of the main body of the intermediate mold head; Figure 6 for Figure 2 A three-dimensional structural diagram of the upper and middle mold lip cover; Figure 7 for Figure 2 A three-dimensional structural diagram of the lower mold lip cover; Figure 8 This is a three-dimensional structural diagram of the single-sided antistatic carrier tape machine using the extrusion mechanism of the embodiment; Main material feeder 100; Main material input channel 110; Auxiliary material distribution channel 120; 200 for auxiliary material feeder; 210 for auxiliary material input channel; 220 for connecting pipe; Forming die head 300; main material flow channel 310; main material input section 311; main material output section 312; auxiliary material flow channel 320; auxiliary material input section 321; auxiliary material output section 322; forming flow channel 330; die head body 340; composite tip 341; first inclined surface 3411; second inclined surface 3412; concave part 342; upper die lip cover 350; third inclined surface 351; sealing part 352; lower die lip cover 360; fourth inclined surface 361; groove 362; adjusting part 363; threaded hole 364; side sealing plate 370; side pressure plate 380; adjusting component 390; 400 main material extruder; 500 auxiliary material extruder; Extrusion mechanism 600; Molding mechanism 700; Punching mechanism 800; 900 receiving institutions. Detailed Implementation

[0017] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] An extrusion mechanism for a single-sided antistatic carrier tape machine, see [link / reference]. Figures 1-8 It includes a main material feeder 100, a secondary material feeder 200, and a forming die head 300.

[0019] The main material feeder 100 is provided with a main material input channel 110 and a secondary material distribution channel 120. One end of the main material input channel 110 can be connected to the main material extruder 400. The secondary material feeder 200 is provided with a secondary material input channel 210. One end of the secondary material input channel 210 can be connected to the secondary material extruder 500, and the other end is connected to the secondary material distribution channel 120 through a connecting pipe 220.

[0020] The molding die head 300 has an input end and an output end at its two ends, respectively. The molding die head 300 contains a main material flow channel 310, a secondary material flow channel 320, and a molding flow channel 330. The main material flow channel 310 includes a main material input section 311 and a main material output section 312 connected together. The secondary material flow channel 320 includes a secondary material input section 321 and a secondary material output section 322 connected together. One end of both the main material input section 311 and the secondary material input section 321 extends to the input end of the molding die head 300, and then connects to the main material input flow channel 310 and the secondary material branch flow channel, respectively. Both the main material output section 312 and the secondary material output section 322 are connected to the molding flow channel 330. After the main material is extruded by the main material extruder 400, it flows sequentially through the main material input channel 110, the main material input section 311, the main material output section 312, and the forming channel 330. After the auxiliary material is extruded by the auxiliary material extruder 500, it flows sequentially through the auxiliary material input channel 210, the connecting pipe, the auxiliary material branch channel 120, the auxiliary material input section 321, and the auxiliary material output section 322. At the junction of the auxiliary material channel 320 and the forming channel 330, the auxiliary material is compounded onto the main material to complete the compounding process.

[0021] The main material flow channel 310 and the secondary material flow channel 320 each have only one channel. From the perspective of the products produced by this structure, the PS layer is only laminated on one side of the PC layer. Compared with carrier tapes with double PS layers, this significantly reduces the amount of PS composite material used, thus reducing material costs. For application scenarios where anti-static function can be achieved with only a single-sided PS layer, i.e., a single-sided anti-static carrier tape, this carrier tape is more cost-effective and more competitive in the market. From the perspective of the molding die head 300 structure, setting only one secondary material flow channel 320 makes the internal structure of the molding die head 300 simpler than setting two secondary material flow channels, significantly reducing the difficulty of die head manufacturing. From the perspective of carrier tape production process, because existing molding dies require ensuring the consistency of the lamination process on both sides of the PC base layer when laminating PS material, the production process requirements are high and the equipment debugging is difficult. The molding die head 300 in this case does not have the requirement of consistent lamination of PS composite material on both sides, significantly reducing the processing difficulty.

[0022] In this case, the die head 300 is equipped with only one secondary material flow channel 320. Compared with the traditional structure of two secondary material flow channels 320, the solution of blocking the inlet of one of the secondary material flow channels 320 can prevent material from flowing into the blocked flow channel at the junction of the outlet of the blocked flow channel and the forming flow channel 330, thus ensuring the forming quality of the single-sided antistatic carrier tape.

[0023] The main material input section 311 and the auxiliary material input section 321 are both channel structures, while the main material output section 312 and the auxiliary material output section 322 are channels with a certain width that are adapted to the width of the forming channel 330, so that the material can flow into the forming channel 330 with a certain width and be processed into a carrier tape with the same width as the preset width.

[0024] In this embodiment, the included angle between the main material output section 312 and the auxiliary material output section 322 is an acute angle. This angle design allows the auxiliary material to be smoothly compounded onto the main material. Preferably, the included angle between the main material output section 312 and the auxiliary material output section 322 is 35°~55°, and more preferably, the angle is 45°.

[0025] In this embodiment, the forming die head 300 includes a die head body 340, an upper die lip cover 350, and a lower die lip cover 360. One end of the die head body 340 is the aforementioned input end, and the other end of the die head body 340 is provided with a composite tip 341. The main material flow channel 310 is located in the middle of the die head body 340, with one end extending to the input end of the die head body 340 and the other end located at the tip of the composite tip 341. The auxiliary material flow channel 320 is horizontally disposed above the main material flow channel 310. The upper outer wall and lower outer wall of the composite tip 341 are respectively a first inclined surface 3411 and a second inclined surface 3412. Both the first inclined surface 3411 and the second inclined surface 3412 are inclined towards the main material flow channel 310 and are arranged symmetrically on the two surfaces. The top of the first inclined surface 3411 connects to the auxiliary material flow channel 320. The position where the first inclined surface 3411 and the second inclined surface 3412 are close together is the sharp corner position of the composite tip 341. The upper mold lip cover 350 and the lower mold lip cover 360 are respectively fixedly connected to the upper and lower sides of the mold head body 340. The upper mold lip cover 350 is provided with a third inclined surface 351, which is opposite to the first inclined surface 3411 and forms the auxiliary material output section 322 mentioned above between them. The lower mold lip cover 360 is provided with a fourth inclined surface 361, which abuts against the third inclined surface 351 to ensure the sealing performance between them. The bottom surface of the upper mold lip cover 350 and the top surface of the lower mold lip cover 360 are horizontal surfaces, forming the molding flow channel 330 mentioned above between them.

[0026] The forming die 300 described above is equipped with a main material flow channel 310 and a secondary material flow channel 320, which can meet the production requirements of single-sided anti-static carrier tape. Since the composite tip 341 of the die body 340 has a symmetrical structure, and the die body 340 and the lower die lip 360 are separate structures, the lower half of the forming die 300 body and the lower die lip 360 do not have flow channels. If the carrier tape manufacturer does not have a demand for single-layer PS carrier tape production, and the double-layer PS carrier tape becomes larger, another secondary material flow channel 320 with a secondary material input section 321 can be further processed in the lower half of the die body 340, and a secondary material output section 322 can be formed in conjunction with the lower die lip 360, thus forming a die 300 for producing double-layer PS carrier tape. In other words, the die body 340 of this structure has a certain optimization space, avoiding the problem of the entire forming die 300 being idle and wasted when the carrier tape manufacturer does not produce single-layer PS carrier tape, and reducing production costs.

[0027] In this embodiment, the main material output section 312 is located at the composite tip 341 of the die head body 340. For ease of processing, the main material output section 312 extends through both sides in the width direction. The forming die head 300 also includes side sealing plates 370 and side pressure plates 380. There are two side sealing plates 370, located on both sides of the composite tip 341, abutting against the two side openings in the width direction of the main material output section 312. There are also two side pressure plates 380, located outside the two side sealing plates 370. The side pressure plates 380 are fixedly connected to the die head body 340, the upper die lip cover 350, and the lower die lip cover 360 respectively by bolts. This achieves the assembly and fixation of the two die lips, and also ensures a sealing effect by pressing the side sealing plates 370 with the side pressure plates 380. The upper die lip cover 350 and the lower die lip cover 360 also abut against and seal with the two side sealing plates 370 in the width direction.

[0028] The die head body 340 has a recessed portion 342 above the first inclined surface 3411. The recessed portion 342 is recessed towards the inlet side of the auxiliary material input section 321, and the bottom of the recessed portion 342 communicates with the auxiliary material output section 322. The upper die lip cover 350 has a sealing portion 352, and the bottom and side surfaces of the sealing portion 352 abut against the bottom and side surfaces of the recessed portion 342. Since the width of the auxiliary material output section 322 is relatively large, the sealing performance on the inlet side of the auxiliary material output section 322 can be improved by the abutting fit between the bottom and side surfaces of the sealing portion 352 and the bottom and side surfaces of the recessed portion 342.

[0029] The die head body 340 is also provided with a recessed portion 342 below the second inclined surface 3412, and the lower die lip cover 360 is also provided with the same structure as the sealing portion 352 mentioned above.

[0030] In this embodiment, a groove 362 is provided on the surface of the lower die lip cover 360 that connects with its top exit side, i.e., the surface opposite to the fourth inclined surface 361. The groove 362 extends through the width of the lower die lip cover 360 and is located near the top exit side of the lower die lip cover 360, thus separating the exit position of the lower die lip cover 360 into an adjustment portion 363. An adjustment member 390 is provided on the lower die lip cover 360 and is fixedly connected to it. The adjustment member 390 presses against the adjustment portion 363, allowing the adjustment portion 363 to bend upwards and adjust the distance between the adjustment portion 363 and the bottom surface of the lower die lip cover 360, thereby adjusting the thickness of the carrier belt to meet different production needs. After the elastic member presses against the adjustment portion 363, the deformation of the adjustment portion 363 is extremely small, resulting in elastic deformation. When the pressure is released, it springs back to its initial position. If the adjustment part 363 cannot spring back to the initial position, take full advantage of the detachable structure between the lower mold lip cover 360 and the mold head body 340, and replace it with a new lower mold lip structure, which is convenient for maintenance.

[0031] The aforementioned adjusting component 390 is an adjusting bolt. Multiple adjusting bolts are spaced apart along the width direction of the lower die lip cover 360. The lower die lip cover 360 has threaded holes 364 facing the groove 362. Each bolt connects to a threaded hole 364 until its end extends into the groove 362 and presses against the adjusting part 363. Adjustment is achieved by rotating the bolt to press against the adjusting part 363, making adjustment convenient. Furthermore, since the material distribution in the width direction of the forming channel 330 is not uniform, the adjusting bolts on both sides of the width direction can be further screwed in to adjust the thickness of the forming channel 330 in the width direction, thereby improving the quality of the produced carrier tape.

[0032] This embodiment utilizes the extrusion mechanism 600 of the aforementioned single-sided antistatic carrier tape machine within the single-sided antistatic carrier tape machine. The single-sided antistatic carrier tape machine includes main and auxiliary material extruders 400 and 500, an extrusion mechanism 600, a forming mechanism 700, a punching mechanism 800, and a winding mechanism 900. Specifically, the extruders employ existing equipment, the extrusion mechanism 600 is the same as the one described in this embodiment, and the forming mechanism 700, punching mechanism 800, and winding mechanism 900 can use mechanisms as disclosed in publication number CN115847896A; further details are omitted here.

[0033] The above description is only a preferred embodiment of the present invention, and its structure is not limited to the shapes listed above. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An extrusion mechanism for a single-sided antistatic carrier tape machine, characterized in that: It includes a forming die head, with an input end and an output end at its two ends; the forming die head is provided with a main material flow channel, a secondary material flow channel and a forming flow channel; The main material flow channel includes a main material input section and a main material output section connected together, and the auxiliary material flow channel includes an auxiliary material input section and an auxiliary material output section connected together; both the main material input section and the auxiliary material input section extend to the input end, and both the main material output section and the auxiliary material output section are connected to the forming flow channel; the included angle between the main material output section and the auxiliary material output section is an acute angle; There is only one main material flow channel and one auxiliary material flow channel.

2. The extrusion mechanism of the single-sided antistatic carrier tape machine according to claim 1, characterized in that: The included angle between the main material output section and the auxiliary material output section is 35°~55°.

3. The extrusion mechanism of the single-sided antistatic carrier tape machine according to claim 1, characterized in that: The forming die head includes a die head body, an upper die lip cover, and a lower die lip cover; One end of the die head body is the input end, and the other end of the die head body is provided with a composite tip; the main material flow channel is a direct flow channel, and the main material output section is located at the sharp corner of the composite tip; The upper outer wall and lower outer wall of the composite tip are respectively a first inclined surface and a second inclined surface. The first inclined surface and the second inclined surface are both inclined towards the main material flow channel and along the flow direction of the main material. The first inclined surface and the second inclined surface are symmetrically arranged about the main material flow channel. The upper mold lip and the lower mold lip are respectively fixedly connected to the upper and lower sides of the mold head body; the upper mold lip is provided with a third inclined surface, which is opposite to the first inclined surface and forms the auxiliary material output section between them; the lower mold lip is provided with a fourth inclined surface, which abuts against the third inclined surface; the forming flow channel is formed between the bottom surface of the upper mold lip and the top surface of the lower mold lip.

4. The extrusion mechanism of the single-sided antistatic carrier tape machine according to claim 3, characterized in that: The auxiliary material input section is a channel, the width of the auxiliary material input section is smaller than the width of the auxiliary material output section, and the width of the auxiliary material output section is adapted to the width of the forming flow channel; The die head body has a concave portion above the first inclined surface. The concave portion is recessed towards the inlet side of the outlet of the auxiliary material input section. The bottom of the concave portion is connected to the auxiliary material output section. The upper mold lip cover is provided with a sealing part, and the bottom and side surfaces of the sealing part abut against the bottom and side surfaces of the concave part.

5. The extrusion mechanism of the single-sided antistatic carrier tape machine according to claim 3, characterized in that: The lower mold lip cover has a groove on the surface that connects with its top surface outlet side. The groove extends through the width of the lower mold lip cover and is located near the top surface outlet side of the lower mold lip cover, thereby separating the outlet position of the lower mold lip cover into an adjustment section. It also includes an adjusting component, which is fixedly connected to the lower mold lip cover. The adjusting component and the adjusting part are pressed together to adjust the distance between the adjusting part and the bottom surface of the lower mold lip cover.

6. The extrusion mechanism of the single-sided antistatic carrier tape machine according to claim 5, characterized in that: The adjusting component is an adjusting bolt, and there are multiple adjusting bolts. The multiple adjusting bolts are spaced apart along the width direction of the lower mold lip cover, and the end of each adjusting bolt extends into the groove and abuts against the adjusting part.

7. The extrusion mechanism of the single-sided antistatic carrier tape machine according to claim 3, characterized in that: The main material output section is located inside the composite tip and extends through both sides of the composite tip in the width direction; The forming die head also includes a side sealing plate and a side pressure plate; there are two side sealing plates and two side pressure plates; the two side sealing plates are respectively disposed on both sides of the composite tip in the width direction; the two side pressure plates are respectively fixedly connected to both sides of the die head body and fixedly connected to the upper die lip and the lower die lip; the side sealing plates and the corresponding side pressure plates are pressed together, so that the side pressure plates seal and press against the side of the composite tip.

8. A single-sided antistatic carrier tape machine, characterized in that: Including the extrusion mechanism of a single-sided antistatic carrier tape machine as described in any one of claims 1-7.

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