Material feeding device of rotary point glue machine

CN122605683APending Publication Date: 2026-08-21SUZHOU KAIHUI INTELLIGENT EQUIP CO LTD
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Patent Information

Application Number
CN202611085427.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-21
Publication Date
2026-08-21

AI Technical Summary

Technical Problem

[0003]现有设备大多采用固定式夹具配合人工辅助上料,或简易机械推送上料的结构模式,在实际生产应用中暴露诸多技术短板

Benefits of technology

[0017]1、该旋转式点胶机的物料上料装置,采用齿条与齿轮啮合传动配合离心力夹持的结构设计,无需单独设置旋转驱动电机与夹紧驱动机构,利用夹具滑动上料的动力同步实现夹头旋转与工件自适应夹持,简化了设备整体结构,减少零部件数量,降低设备制造成本与后期维护成本,同时避免多机构协同运行的配合误差,有效降低设备故障率。

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Abstract

The application discloses a material feeding device of a rotary glue dispensing machine and relates to the technical field of glue dispensing machine equipment. The material feeding device of the rotary glue dispensing machine comprises a portal frame, a sliding frame, a feeding frame and a clamp, the sliding frame is slidingly sleeved on the portal frame, and the sliding frame is provided with a pneumatic rod; the feeding frame is arranged below the portal frame, a support plate of the feeding frame is provided with a rack at the top, the integrated plate of the clamp is sleeved on the output end of the pneumatic rod, the chuck is inserted on the integrated plate and is provided with a gear at the bottom, which is engaged with the rack, and the inner side of the chuck is provided with a slidable clamp shoe. The clamp is driven to slide by the sliding frame, the chuck is driven to rotate by the engagement transmission of the gear and the rack, the clamp shoe is driven to slide outward by the centrifugal force generated by rotation to adaptively clamp the workpiece, an independent rotating and clamping driving mechanism is not needed, the equipment structure is greatly simplified, and the failure rate and production cost are reduced.
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Description

Technical Field

[0001] This invention relates to the field of dispensing machine equipment technology, specifically to a material feeding device for a rotary dispensing machine. Background Technology

[0002] Dispensing machines are commonly used automated equipment in industrial production, widely applied in the bonding, sealing, and gluing processes of electronic components, hardware accessories, and plastic products. The material feeding device, as a core component of the rotary dispensing machine, is primarily responsible for the automatic conveying, positioning, and clamping of the workpiece to be processed. Its structural rationality and operational stability directly determine the accuracy and efficiency of the dispensing process.

[0003] Most existing equipment uses fixed clamps with manual assistance for feeding, or simple mechanical push-feeding structures, which exposes many technical shortcomings in actual production applications. Firstly, traditional clamps are fixed clamping structures with fixed, non-adjustable clamping force, unable to adapt to different specifications and materials of workpieces. Furthermore, their clamping stability is poor, and workpieces are prone to shifting and loosening during high-speed rotation and dispensing, leading to quality problems such as skewed dispensing trajectories, uneven glue thickness, glue overflow, and insufficient glue, significantly reducing product yield. Secondly, existing feeding devices often use independent drive mechanisms to control workpiece rotation, clamping, and position adjustment. This results in numerous parts and complex assembly structures, significantly increasing manufacturing costs and installation space requirements. Furthermore, transmission errors are prone to occur during multi-mechanism operation, leading to high failure rates and difficult maintenance. Thirdly, traditional feeding structures lack precise conveying limits, sliding guides, and integrated transmission structures. The continuity of workpiece conveying, positioning, clamping, rotational dispensing, and unloading / resetting operations is poor, resulting in low automation and a high reliance on manual intervention.

[0004] In view of the problems existing in the current technology, there is an urgent need to design a rotary dispensing machine material feeding device with a simplified structure, stable operation, adaptive clamping, and flexible adjustment to solve the above-mentioned technical defects. Summary of the Invention

[0005] The purpose of this invention is to provide a material feeding device for a rotary dispensing machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a material feeding device for a rotary dispensing machine, comprising a gantry frame, a sliding frame, a feeding rack, and a clamp. The sliding frame is sleeved on the outside of the gantry frame and slidably connected to the gantry frame, and a pneumatic rod is provided on the sliding frame. The feeding rack is located directly below the gantry frame and includes a support plate, with a rack on the top of the support plate. The clamp includes an integrated plate and a chuck. The integrated plate can be sleeved on the outside of the output end of the pneumatic rod, and the chuck is inserted into the integrated plate, through which a gear is inserted. The gear meshes with the rack, and a slidable clamping pad is provided on the inner side of the chuck. The sliding frame can drive the clamp to slide on the feeding rack via the pneumatic rod. During the sliding process, the gear is driven by the rack to rotate the chuck, and the clamping pad slides outward under centrifugal force to abut against the workpiece, tightly clamping the workpiece.

[0007] Preferably, a first sliding guide rod is fixedly connected to the gantry frame, a first drive screw is inserted into the inner side of the gantry frame, and a first motor is provided on the top of the gantry frame. The first motor drives the first drive screw to rotate through a pulley and a transmission belt. The first drive screw is used to drive the sliding frame to slide on the gantry frame.

[0008] Preferably, the sliding frame includes a positioning plate and an adjusting plate. The top of the positioning plate is provided with a sliding sleeve and a threaded sleeve. The sliding sleeve is sleeved on the outside of the first sliding guide rod, and the threaded sleeve is sleeved on the outside of the first driving screw. The sliding frame is slidably connected to the first sliding guide rod and the first driving screw.

[0009] Preferably, the pneumatic rod is inserted into the positioning plate, and a second drive screw and a second sliding guide rod are sleeved on the bottom of the positioning plate. One end of the second drive screw is connected to a second motor via a pulley and a transmission belt. The second motor is fixedly connected to the bottom of the positioning plate, and the second sliding guide rod is located on both sides of the second drive screw.

[0010] Preferably, the adjusting plate has a slot that engages with the outside of the output end of the pneumatic rod without contacting it. The top of the adjusting plate is provided with a threaded sleeve and a sliding sleeve. The threaded sleeve is fitted onto the outside of the second drive screw, and the sliding sleeve is fitted onto the outside of the second sliding guide rod. The adjusting plate can be driven by the second drive screw to adjust back and forth. A cylinder is inserted into the inside of the adjusting plate, and the output end of the cylinder is connected to a support rod. The support rod is located below the adjusting plate, and a dispensing head is inserted into the support rod, which corresponds to the clamp.

[0011] Preferably, the feeding frame further includes a transmission frame, a limit rod is fixedly connected to the top of the transmission frame, a linkage roller and a transmission roller are inserted into the inner side of the transmission frame, a transmission wheel for connecting the drive device is sleeved on the outer side of the transmission roller, a conveyor belt for conveying the clamp is sleeved on the outer side of the linkage roller and the transmission roller, an interface protrusion is fixedly connected to the outer side of the transmission frame, the transmission frame is located on both sides of the support plate, and the support plate is mounted on two sets of transmission frames, corresponding to the position of the interface protrusion.

[0012] Preferably, the top of the rack is fixedly connected to a locking strip that engages with the clamp, and the locking strip is slidably connected to the clamp.

[0013] Preferably, the integrated plate has a positioning groove and a sleeve hole on the top, and a through hole on the bottom of the positioning groove. The positioning groove is used to fit a clamp, and the sleeve hole is used to fit a pneumatic rod. A slide bar is fixedly connected to the bottom of the integrated plate, and a groove is formed between the slide bars. A limit groove is formed on the inner side of the groove, and the limit groove is engaged with the outer side of the clip bar.

[0014] Preferably, the chuck includes a sleeve and a rod. A limiting block is fixedly connected to the inner side of the sleeve. A limiting hole is opened on the side of the sleeve. A shaft is fixedly connected to the bottom of the sleeve. The shaft passes through a through hole to the bottom of the integrated plate. The gear is fixedly sleeved on the outside of the shaft. The gear is located inside a groove below the integrated plate.

[0015] Preferably, the insertion rod is fixedly inserted into the inner side of the limiting hole, and a spring is sleeved on the outer side of the insertion rod. One end of the spring abuts against the inner wall of the sleeve. A sliding sleeve is provided on the clamping plate. The sliding sleeve is sleeved on the outer side of the insertion rod and slidably connected to the insertion rod. The clamping plate is located inside the spring and on both sides of the limiting block. The sliding sleeve abuts against the other end of the spring. A support ring for lifting the workpiece is fixedly connected to the outer side of the clamping plate.

[0016] The technical effects and advantages of this invention are as follows:

[0017] 1. The material feeding device of this rotary dispensing machine adopts a structure design of rack and pinion meshing transmission combined with centrifugal force clamping. It does not require a separate rotary drive motor and clamping drive mechanism. The power of the sliding feeding of the clamp is used to realize the rotation of the clamp and the adaptive clamping of the workpiece. This simplifies the overall structure of the equipment, reduces the number of parts, and lowers the equipment manufacturing cost and subsequent maintenance cost. At the same time, it avoids the coordination error of multiple mechanisms operating in coordination, effectively reducing the equipment failure rate.

[0018] 2. The material feeding device of this rotary dispensing machine uses centrifugal force to drive the clamping plates to slide and hold the workpiece. The clamping force can be adaptively adjusted according to the rotation speed of the chuck, which can adapt to the clamping and fixing of workpieces of different specifications and materials. The clamping process is stable and uniform, which can effectively avoid problems such as workpiece displacement, loosening, and deformation, improve the dispensing processing accuracy and product qualification rate, and improve the equipment versatility.

[0019] 3. The material feeding device of this rotary dispensing machine adopts an elastic reset structure with spring and limit block cooperation. After the dispensing operation is completed, as the chuck speed decreases and the centrifugal force disappears, the spring can quickly push the clamping plate to reset and retract, which can easily complete the unloading and loading of the workpiece and simplify the operation process. At the same time, the support ring set at the bottom of the clamping plate can provide all-round support for the workpiece, preventing the workpiece from being suspended and loosened or falling off, further improving the stability and reliability of workpiece clamping. The overall structure is compact and reasonable, runs smoothly, and has a long service life.

[0020] 4. The material feeding device of this rotary dispensing machine adopts a dual-sided transmission frame design with left and right division of labor and assembly line operation. The left transmission frame is dedicated to material feeding and conveying, and the clamp and workpiece are transported by a conveyor belt. With the help of the top limit rod, the workpiece is accurately positioned and stopped at the docking station under the gantry frame. This achieves automated feeding, precise positioning, and mechanism docking in one integrated operation without manual alignment intervention. The sliding stroke of the clamp along the sliding frame from left to right is the dispensing stroke. During the movement, it simultaneously completes omnidirectional rotational dispensing. After dispensing, it directly docks with the right unloading transmission frame to complete automatic unloading. The operation process is smooth and continuous, avoiding process interruption problems. At the same time, combined with the limiting and guiding structure of the support plate, rack and pinion, and clamping strip, it realizes the fully automated operation of automatic workpiece feeding, precise positioning, stable clamping, synchronous rotational dispensing, and automatic unloading, which is suitable for the needs of industrial-scale mass production. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the gantry frame structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the sliding frame of the present invention;

[0025] Figure 4This is a schematic diagram of the feeding rack of the present invention;

[0026] Figure 5 This is a schematic diagram of the conveyor belt structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the support plate of the present invention;

[0028] Figure 7 This is a side view of the support plate of the present invention;

[0029] Figure 8 This is a schematic diagram of the fixture of the present invention;

[0030] Figure 9 This is a schematic diagram of the bottom structure of the fixture of the present invention;

[0031] Figure 10 This is a schematic diagram of the integrated board of the present invention;

[0032] Figure 11 This is a schematic diagram of the bottom structure of the integrated board of the present invention;

[0033] Figure 12 This is an exploded view of the chuck of the present invention;

[0034] Figure 13 This is a schematic diagram of the bottom structure of the sleeve of the present invention;

[0035] Figure 14 This is a cross-sectional structural diagram of the clamp of the present invention.

[0036] In the picture:

[0037] 1. Gantry frame; 11. First sliding guide rod; 12. First drive screw; 13. First motor;

[0038] 2. Sliding frame; 21. Positioning plate; 211. Pneumatic rod; 212. Second drive screw; 2121. Second motor; 213. Second sliding guide rod; 22. Adjusting plate; 221. Groove; 222. Cylinder; 223. Frame rod; 224. Dispensing head;

[0039] 3. Feeding rack; 31. Transmission frame; 311. Limiting rod; 312. Linkage roller; 313. Conveyor belt; 314. Interface protrusion; 315. Transmission roller; 3151. Transmission wheel; 32. Support plate; 321. Rack; 322. Clamping strip;

[0040] 4. Fixture; 41. Integrated plate; 411. Positioning groove; 4111. Through hole; 412. Sleeve hole; 413. Sliding bar; 414. Groove; 415. Limiting groove; 42. Chuck; 421. Sleeve; 4211. Limiting block; 4212. Limiting hole; 4213. Shaft; 4214. Gear; 422. Insert rod; 4221. Spring; 423. Clamping plate; 4231. Support ring; 4232. Sliding sleeve. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] This invention discloses a material feeding device for a rotary dispensing machine, according to the attached... Figures 1 to 14 As shown, the system includes a gantry frame 1, a sliding frame 2, a loading rack 3, and a clamp 4. The sliding frame 2 is sleeved on the outside of the gantry frame 1 and is slidably connected to the gantry frame 1. A pneumatic rod 211 is installed on the sliding frame 2. The loading rack 3 is located directly below the gantry frame 1 and includes a support plate 32. A rack 321 is installed on the top of the support plate 32. The clamp 4 includes an integrated plate 41 and a chuck 42. The integrated plate 41 can be sleeved on the outside of the output end of the pneumatic rod 211. A gear 4214 is inserted into and passes through the integrated plate 41. The gear 4214 meshes with the rack 321. A sliding clamping plate 423 is provided on the inner side of the chuck 42. The sliding frame 2 can drive the clamp 4 to slide on the loading frame 3 via the pneumatic rod 211. During the sliding process, the gear 4214 is driven by the rack 321 to drive the chuck 42 to rotate. Under the action of centrifugal force, the clamping plate 423 slides outward to abut against the workpiece and tightly clamps the workpiece.

[0043] The structure design adopts a combination of rack 321 and gear 4214 meshing transmission and centrifugal force clamping, eliminating the need for a separate rotary drive motor and clamping drive mechanism. The power of the sliding feeding of the clamp 4 is used to realize the rotation of the chuck 42 and the adaptive clamping of the workpiece, which greatly simplifies the overall structure of the equipment, reduces the number of parts, and lowers the equipment manufacturing cost and subsequent maintenance cost. At the same time, it avoids the coordination error of multiple mechanisms operating in tandem, effectively reducing the equipment failure rate.

[0044] The workpiece is slidably clamped by the clamping tile 423 driven by centrifugal force. The clamping force can be adaptively adjusted according to the rotation speed of the chuck 42. It can be adapted to clamp and fix workpieces of different specifications and materials. The clamping process is stable and uniform, which can effectively avoid problems such as workpiece displacement, loosening and deformation, and greatly improve the dispensing processing accuracy and product qualification rate. The equipment versatility is significantly improved.

[0045] Furthermore, a first sliding guide rod 11 is fixedly connected to the gantry frame 1, a first drive screw 12 is inserted into the inner side of the gantry frame 1, and a first motor 13 is provided on the top of the gantry frame 1. The first motor 13 drives the first drive screw 12 to rotate through a pulley and a transmission belt. The first drive screw 12 is used to drive the sliding frame 2 to slide on the gantry frame 1.

[0046] Furthermore, the sliding frame 2 includes a positioning plate 21 and an adjusting plate 22. The top of the positioning plate 21 is provided with a sliding sleeve and a threaded sleeve. The sliding sleeve is sleeved on the outside of the first sliding guide rod 11, and the threaded sleeve is sleeved on the outside of the first driving screw 12. The sliding frame 2 is slidably connected to the first sliding guide rod 11 and the first driving screw 12.

[0047] Furthermore, the pneumatic rod 211 is inserted into the positioning plate 21. The bottom of the positioning plate 21 is fitted with a second drive screw 212 and a second sliding guide rod 213. One end of the second drive screw 212 is connected to a second motor 2121 via a pulley and a transmission belt. The second motor 2121 is fixedly connected to the bottom of the positioning plate 21. The second sliding guide rod 213 is located on both sides of the second drive screw 212.

[0048] Furthermore, the adjusting plate 22 has a slot 221, which is engaged with the outside of the output end of the pneumatic rod 211 without contacting the pneumatic rod 211. The top of the adjusting plate 22 is provided with a threaded sleeve and a sliding sleeve. The threaded sleeve is fitted with the outside of the second drive screw 212, and the sliding sleeve is fitted with the outside of the second sliding guide rod 213. The adjusting plate 22 can be driven by the second drive screw 212 to adjust back and forth. A cylinder 222 is inserted into the inside of the adjusting plate 22. The output end of the cylinder 222 is connected to a support rod 223. The support rod 223 is located below the adjusting plate 22. A glue dispensing head 224 is inserted into the support rod 223, and the glue dispensing head 224 corresponds to the clamp 42.

[0049] Specifically disclosed, the loading rack 3 also includes a transmission rack 31. A limit rod 311 is fixedly connected to the top of the transmission rack 31. A linkage roller 312 and a transmission roller 315 are inserted into the inner side of the transmission rack 31. A transmission wheel 3151 for connecting the drive device is sleeved on the outer side of the transmission roller 315. A conveyor belt 313 for conveying the clamp 4 is sleeved on the outer side of the linkage roller 312 and the transmission roller 315. An interface protrusion 314 is fixedly connected to the outer side of the transmission rack 31. The transmission rack 31 is located on both sides of the support plate 32. The support plate 32 is mounted on the two sets of transmission racks 31, corresponding to the position of the interface protrusion 314.

[0050] Specifically disclosed, the top of the rack 321 is fixedly connected to a locking strip 322 that engages with the clamp 4, and the locking strip 322 is slidably connected to the clamp 4.

[0051] Specifically disclosed, the top of the integrated plate 41 is provided with a positioning groove 411 and a sleeve hole 412, and the bottom of the positioning groove 411 is provided with a through hole 4111. The positioning groove 411 is used to fit the clamp 42, and the sleeve hole 412 is used to fit the pneumatic rod 211. The bottom of the integrated plate 41 is fixedly connected with a slide bar 413, and a groove 414 is formed between the slide bars 413. A limit groove 415 is provided on the inner side of the groove 414, and the limit groove 415 is engaged with the outer side of the clamping strip 322.

[0052] It should be emphasized that the chuck 42 includes a sleeve 421 and a plug rod 422. A limit block 4211 is fixedly connected to the inner side of the sleeve 421. A limit hole 4212 is opened on the side of the sleeve 421. A shaft 4213 is fixedly connected to the bottom of the sleeve 421. The shaft 4213 passes through the through hole 4111 to the bottom of the integrated plate 41. A gear 4214 is fixedly sleeved on the outside of the shaft 4213. The gear 4214 is located inside the groove 414 below the integrated plate 41.

[0053] It should be emphasized that the insertion rod 422 is fixedly inserted into the inner side of the limiting hole 4212, and a spring 4221 is sleeved on the outer side of the insertion rod 422. One end of the spring 4221 abuts against the inner wall of the sleeve 421. A sliding sleeve 4232 is provided on the clamping plate 423. The sliding sleeve 4232 is sleeved on the outer side of the insertion rod 422 and is slidably connected to the insertion rod 422. The clamping plate 423 is located inside the spring 4221 and is located on both sides of the limiting block 4211. The sliding sleeve 4232 abuts against the other end of the spring 4221. A support ring 4231 for lifting the workpiece is fixedly connected to the outer side of the clamping plate 423.

[0054] The elastic reset structure, which uses spring 4221 and limit block 4211, allows the spring 4221 to quickly push the clamping plate 423 to reset and retract after the dispensing operation is completed, as the speed of the chuck 42 decreases and the centrifugal force disappears. This facilitates the unloading and loading of workpieces, making the operation process simple and efficient. At the same time, the support ring 4231 at the bottom of the clamping plate 423 can provide all-round support for the workpiece, preventing it from being suspended, loosened, or falling off. This further improves the stability and reliability of workpiece clamping. The overall structure is compact and reasonable, operates smoothly, and has a long service life.

[0055] Working principle:

[0056] First, place the workpiece to be processed on the support ring 4231 inside the chuck 42 to complete the initial placement and positioning of the workpiece. Then, place the fixture 4 carrying the workpiece on the conveyor belt 313 of the left transmission frame 31. Start the external drive equipment, and the conveyor belt 313 drives the fixture 4 and the workpiece to be transported smoothly until the fixture 4 touches the limit rod 311 to complete the precise limit stop, so that the fixture 4 is precisely in the docking position directly below the gantry frame 1.

[0057] The equipment is then started. The first motor 13 drives the first drive screw 12 to rotate, causing the sliding frame 2 to slide laterally along the gantry frame 1. At the same time, the pneumatic rod 211 extends and is inserted and fixed to the clamp 4 in place, causing the clamp 4 to move synchronously to feed the material. During the sliding of the clamp 4, the bottom gear 4214 and the rack 321 on the top of the support plate 32 continuously mesh and transmit power, and the drive shaft 4213 drives the entire chuck 42 to rotate at high speed. The rotation of the chuck 42 generates centrifugal force, which drives the clamping pads 423 to slide outward along the insertion rod 422 through the sliding sleeve 4232, compressing the spring 4221, so that multiple sets of clamping pads 423 synchronously abut against the inner or outer wall of the workpiece. The clamping force is adaptively adjusted according to the rotation speed to achieve adaptive tight clamping of the workpiece.

[0058] After the workpiece is clamped and fixed, the second drive screw 212 is driven to rotate by the second motor 2121, and the front and rear positions of the adjustment plate 22 are finely adjusted so that the dispensing head 224 is accurately aligned with the preset dispensing position of the workpiece. Then, the support rod 223 is driven to descend by the cylinder 222, which drives the dispensing head 224 to approach the workpiece. With the high-speed rotation of the chuck 42, the workpiece is rotated and dispensed in all directions without dead angles.

[0059] After dispensing is completed, the sliding frame 2 continues to drive the clamp 4 to slide to the right, so that the clamp 4 moves to the unloading position of the right transmission frame 31. Then the speed of the chuck 42 gradually decreases, the centrifugal force continues to decrease, the spring 4221 rebounds and pushes the clamping plate 423 to reset and retract, releasing the workpiece, and the automatic unloading can be completed at the right transmission frame 31. The entire process of loading-dispensing-unloading is completed in one cycle. The equipment can run repeatedly to realize uninterrupted automated batch dispensing processing.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A material feeding device for a rotary dispensing machine, characterized in that, include: Gantry frame (1); A sliding frame (2) is sleeved on the outside of the gantry frame (1) and slidably connected to the gantry frame (1). A pneumatic rod (211) is provided on the sliding frame (2). The feeding rack (3) is located directly below the gantry frame (1). The feeding rack (3) includes a support plate (32) and a rack (321) is provided on the top of the support plate (32). The clamp (4) includes an integrated plate (41) and a chuck (42). The integrated plate (41) can be sleeved on the outside of the output end of the pneumatic rod (211). The chuck (42) is inserted into the integrated plate (41) and a gear (4214) is inserted through the integrated plate (41). The gear (4214) meshes with the rack (321). A slidable clamping pad (423) is provided on the inner side of the chuck (42). The sliding frame (2) can drive the clamp (4) to slide on the loading frame (3) via the pneumatic rod (211). During the sliding process, the gear (4214) is driven by the rack (321) to drive the chuck (42) to rotate. The clamping plate (423) slides outward to abut against the workpiece under the action of centrifugal force, and tightly clamps the workpiece.

2. The material feeding device for a rotary dispensing machine according to claim 1, characterized in that, A first sliding guide rod (11) is fixedly connected to the gantry frame (1), a first drive screw (12) is inserted into the inner side of the gantry frame (1), and a first motor (13) is provided on the top of the gantry frame (1). The first motor (13) drives the first drive screw (12) to rotate through a pulley and a transmission belt. The first drive screw (12) is used to drive the sliding frame (2) to slide on the gantry frame (1).

3. The material feeding device for a rotary dispensing machine according to claim 1, characterized in that, The sliding frame (2) includes a positioning plate (21) and an adjusting plate (22). The top of the positioning plate (21) is provided with a sliding sleeve and a threaded sleeve. The sliding sleeve is sleeved on the outside of the first sliding guide rod (11), and the threaded sleeve is sleeved on the outside of the first driving screw (12). The sliding frame (2) is slidably connected to the first sliding guide rod (11) and the first driving screw (12).

4. The material feeding device for a rotary dispensing machine according to claim 1, characterized in that, The pneumatic rod (211) is inserted into the positioning plate (21). The bottom of the positioning plate (21) is fitted with a second drive screw (212) and a second sliding guide rod (213). One end of the second drive screw (212) is connected to a second motor (2121) via a pulley and a transmission belt. The second motor (2121) is fixedly connected to the bottom of the positioning plate (21). The second sliding guide rod (213) is located on both sides of the second drive screw (212).

5. The material feeding device for a rotary dispensing machine according to claim 3, characterized in that, The adjusting plate (22) has a slot (221) which is engaged with the outside of the output end of the pneumatic rod (211) and does not contact the pneumatic rod (211). The top of the adjusting plate (22) is provided with a threaded sleeve and a sliding sleeve. The threaded sleeve is engaged with the outside of the second drive screw (212), and the sliding sleeve is engaged with the outside of the second sliding guide rod (213). The adjusting plate (22) can be driven by the second drive screw (212) to adjust back and forth. A cylinder (222) is inserted into the inside of the adjusting plate (22). The output end of the cylinder (222) is connected to a support rod (223). The support rod (223) is located below the adjusting plate (22). A dispensing head (224) is inserted into the support rod (223). The dispensing head (224) corresponds to the clamp (42).

6. The material feeding device for a rotary dispensing machine according to claim 1, characterized in that, The loading rack (3) also includes a transmission rack (31). A limit rod (311) is fixedly connected to the top of the transmission rack (31). A linkage roller (312) and a transmission roller (315) are inserted into the inner side of the transmission rack (31). A transmission wheel (3151) for connecting the drive device is sleeved on the outer side of the transmission roller (315). A conveyor belt (313) for conveying the clamp (4) is sleeved on the outer side of the linkage roller (312) and the transmission roller (315). An interface protrusion (314) is fixedly connected to the outer side of the transmission rack (31). The transmission rack (31) is located on both sides of the support plate (32). The support plate (32) is mounted on the two sets of transmission racks (31) and corresponds to the position of the interface protrusion (314).

7. The material feeding device for a rotary dispensing machine according to claim 1, characterized in that, The top of the rack (321) is fixedly connected to a locking strip (322) that engages with the clamp (4), and the locking strip (322) is slidably connected to the clamp (4).

8. The material feeding device for a rotary dispensing machine according to claim 7, characterized in that, The integrated plate (41) has a positioning groove (411) and a sleeve hole (412) on the top. The positioning groove (411) has a through hole (4111) at the bottom. The positioning groove (411) is used to fit the clamp (42). The sleeve hole (412) is used to fit the pneumatic rod (211). The bottom of the integrated plate (41) is fixedly connected to a slide bar (413). A groove (414) is formed between the slide bars (413). A limit groove (415) is opened on the inner side of the groove (414). The limit groove (415) is engaged with the outer side of the clamping strip (322).

9. The material feeding device for a rotary dispensing machine according to claim 1, characterized in that, The clamp (42) includes a sleeve (421) and a plug (422). A limiting block (4211) is fixedly connected to the inner side of the sleeve (421). A limiting hole (4212) is opened on the side of the sleeve (421). A shaft (4213) is fixedly connected to the bottom of the sleeve (421). The shaft (4213) passes through the through hole (4111) to the bottom of the integrated plate (41). The gear (4214) is fixedly sleeved on the outside of the shaft (4213). The gear (4214) is located inside the groove (414) below the integrated plate (41).

10. The material feeding device for a rotary dispensing machine according to claim 9, characterized in that, The insertion rod (422) is fixedly inserted into the inner side of the limiting hole (4212). A spring (4221) is sleeved on the outer side of the insertion rod (422). One end of the spring (4221) abuts against the inner wall of the sleeve (421). A sliding sleeve (4232) is provided on the clamping plate (423). The sliding sleeve (4232) is sleeved on the outer side of the insertion rod (422) and slidably connected to the insertion rod (422). The clamping plate (423) is located inside the spring (4221) and on both sides of the limiting block (4211). The sliding sleeve (4232) abuts against the other end of the spring (4221). A support ring (4231) for lifting the workpiece is fixedly connected to the outer side of the clamping plate (423).