Locking type positioning clamp for pre-charged needle filling

Abstract

The utility model relates to a locking type positioning clamp for pre -filled needle filling, it includes honeycomb board and positioning platform, is set up in the top surface of positioning platform and is offered honeycomb board to embed the embedding groove, the bottom end of pre -filled needle needle tube is offered and is set out the positioning hole, the aperture of positioning hole is greater than the outer diameter of pre -filled needle needle tube, and positioning platform includes upper plate, lower plate and fixed ring board, and fixed ring board fixedly connected between upper plate and lower plate, and the outer periphery of upper plate and the outer periphery of lower plate are flush, and the outer periphery of fixed ring board and the outer periphery of upper plate are flush, still be equipped with locking plate between upper plate and lower plate, and the bottom end of pre -filled needle needle tube is set up and is offered locking hole that locking plate passes, and the aperture of locking hole is greater than the aperture of mounting hole, and locking plate slidingly sets up, and locking plate can slide to pre -filled needle needle tube and is pressed tightly, and locking plate also can slide to separate pre -filled needle needle tube. The application has the effect of avoiding material waste, improving pre -filled needle filling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pre-filled needle filling, and in particular to a locking positioning clamp for pre-filled needle filling. Background Technology

[0002] The pre-filled needle consists of a needle tube and a torsion bar. During pre-filled needle production, the needle tube needs to be filled with medication. A limiting ring is coaxially connected to the top of the pre-filled needle tube, resting on a honeycomb plate. The honeycomb plate has several mounting holes for accommodating the pre-filled needle tubes, arranged in multiple rows with multiple holes per row. To facilitate needle tube installation, the diameter of each mounting hole is larger than the outer diameter of the pre-filled needle tube, and the outer diameter of the limiting ring is larger than the diameter of the mounting hole. During the pre-filled needle filling process, the pre-filled needle tubes are first installed onto the honeycomb plate, and then a suction cup robot moves the honeycomb plate filled with pre-filled needle tubes to the filling mechanism.

[0003] The filling mechanism includes a positioning platform for placing the honeycomb panel and a filling assembly for filling the syringes of the pre-filled needles with material. The positioning platform is located below the filling assembly. The filling assembly includes a hopper, a pump, and a discharge pipe. The pump is connected to the hopper through an inlet pipe and to the top of the discharge pipe through a conveying hose. The discharge pipe is vertically arranged and has a discharge port at its bottom. The discharge port of the discharge pipe is aligned with the opening at the top of the pre-filled needle tube. The number and position of the discharge pipe correspond one-to-one with the row of pre-filled needle tubes. The positioning platform has positioning holes that correspond one-to-one with the mounting holes. The diameter of the positioning holes is the same as the diameter of the mounting holes.

[0004] The suction cup robot moves the positioning platform via a dual-axis linear module, which includes an X-axis module and a Y-axis module. The X-axis module is mounted on the frame of the filling equipment, and the Y-axis module is mounted on the output end of the X-axis module. The X-axis is the extension direction of a discharge pipe, and the Y-axis is the direction perpendicular to the X-axis. The positioning platform can move along the X-axis and Y-axis.

[0005] The suction cup robot places the honeycomb panel on the positioning platform and then leaves the honeycomb panel. The periphery of the honeycomb panel rests on the positioning platform, and all the pre-filled needle tubes are inserted into the corresponding positioning holes. The positioning platform moves with the honeycomb panel and the pre-filled needle tubes to the position corresponding to each discharge tube.

[0006] Since the diameter of the mounting hole is larger than the outer diameter of the pre-filled needle tube, the diameter of the positioning hole is also larger than the outer diameter of the pre-filled needle tube. There is a gap between the pre-filled needle tube and the inner wall of the mounting hole and positioning hole. During the movement of the positioning platform, the pre-filled needle tube may shake or shift. There is a possibility that the outlet of the discharge pipe may deviate from the opening at the top of the pre-filled needle tube. During filling, the material may fall outside the pre-filled needle tube, which not only wastes the material but also reduces the filling efficiency of the pre-filled needle. Utility Model Content

[0007] To address the aforementioned technical problems, this application provides a locking positioning fixture for pre-filled needles.

[0008] The locking positioning fixture for pre-filled needles provided in this application adopts the following technical solution:

[0009] A locking positioning fixture for pre-filled needles includes a honeycomb plate and a positioning platform. The honeycomb plate is provided with a plurality of mounting holes for accommodating pre-filled needle tubes. A mounting tube is coaxially connected above the mounting holes. The diameter of the mounting tube is the same as the diameter of the mounting hole. The diameter of the mounting hole is larger than the outer diameter of the pre-filled needle tube. A limiting ring is coaxially connected to the top of the pre-filled needle tube. The outer diameter of the limiting ring is larger than the outer diameter of the mounting tube.

[0010] The top surface of the positioning platform is provided with a groove for embedding the honeycomb panel and a positioning hole for the bottom end of the pre-filled needle tube to pass through. The diameter of the positioning hole is larger than the outer diameter of the pre-filled needle tube. The positioning platform includes an upper plate, a lower plate and a fixing ring plate. The fixing ring plate is fixedly connected between the upper plate and the lower plate. The outer peripheral surface of the upper plate is flush with the outer peripheral surface of the lower plate. The outer peripheral surface of the fixing ring plate is flush with the outer peripheral surface of the upper plate.

[0011] A locking plate is also provided between the upper plate and the lower plate. The locking plate is provided with a locking hole through which the bottom end of the pre-charge needle tube passes. The diameter of the locking hole is larger than the diameter of the mounting hole. The locking plate is slidably disposed. The locking plate can slide to press the pre-charge needle tube against the mounting hole, and the locking plate can also slide to disengage from the pre-charge needle tube.

[0012] Preferably, on one of the two opposing sides of the locking plate, a compression spring is provided between one side and the inner side of the adjacent fixing ring plate, and a mating protrusion is provided on the other side. The fixing ring plate has a clearance groove for the mating protrusion to pass through. The compression spring applies a force to the locking plate in the direction of pushing the locking plate toward the mating protrusion. The compression spring pushes the locking plate toward the mating protrusion until the inner wall of the locking hole and the inner wall of the positioning hole meet, thus pressing the outer walls of the pre-filled needle tube on both radial sides together. At this time, the side of the locking plate with the mating protrusion abuts against the inner side of the adjacent fixing ring plate, and the end of the mating protrusion away from the locking plate extends out of the clearance groove.

[0013] Preferably, multiple compression springs are provided at intervals.

[0014] Preferably, a fixing plate is provided at the mating protrusion. When the honeycomb plate needs to be placed on the positioning platform and the pre-charge needle tube is inserted into the positioning hole, the side of the fixing plate near the mating protrusion abuts against the outer side of the adjacent fixing ring plate, and the inner peripheral wall of the locking hole disengages from the pre-charge needle tube.

[0015] When the suction cup robot grips the honeycomb plate and moves the positioning platform until the mating protrusion disengages from the fixing plate, the compression spring pushes the locking plate toward the mating protrusion until it engages with the inner wall of the locking hole, thus pressing the outer walls of the pre-filled needle tube radially against each other.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] During the process of the suction cup robot lowering the honeycomb panel so that the bottom end of the pre-filled needle tube passes through the positioning hole, the diameter of the mounting hole is larger than the outer diameter of the pre-filled needle tube, and the diameter of the locking hole is larger than the diameter of the mounting hole, which facilitates the insertion of the pre-filled needle tube into the positioning hole and the locking hole. When the suction cup robot holds the honeycomb panel and moves the positioning platform until the mating protrusion disengages from the fixing plate, the pressure spring pushes the locking plate toward the mating protrusion so that the inner wall of the locking hole mates with the inner wall of the positioning hole, pressing the outer walls of the pre-filled needle tube on both radial sides together, keeping the pre-filled needle tube stable and preventing shaking or displacement. This ensures that the outlet of the discharge tube is aligned with the opening at the top of the pre-filled needle tube, and the material is accurately fed into the pre-filled needle tube during filling, which not only avoids material waste but also improves the filling efficiency of the pre-filled needle. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a locking positioning fixture for pre-filling needles in an embodiment of this application.

[0019] Figure 2 This is a cross-sectional structural diagram used in the embodiments of this application to illustrate the pre-charged needle tube not being pressed (the pressure spring is compressed).

[0020] Figure 3 This is a cross-sectional structural diagram in the embodiments of this application, used to illustrate the pre-charged needle tube being pressed against (the pressing spring pushes the locking plate to the right).

[0021] Figure 4 This is an exploded structural diagram used to illustrate the compression spring in the embodiments of this application.

[0022] Figure 5 This is used to illustrate the embodiments of this application. Figure 2 A magnified structural diagram of point A in the middle.

[0023] Figure 6 This is used to illustrate the embodiments of this application. Figure 3 A magnified structural diagram at point B in the middle.

[0024] Explanation of reference numerals in the attached diagram: 1. Pre-charged needle tube; 11. Limiting ring edge; 2. Honeycomb panel; 21. Mounting hole; 22. Mounting tube; 3. Positioning platform; 31. Embedded groove; 32. Positioning hole; 33. Upper plate; 34. Lower plate; 35. Fixing ring plate; 351. Relief groove; 4. Locking plate; 41. Locking hole; 42. Mating protrusion; 5. Compression spring; 6. Fixing plate; 7. Suction cup robot arm; 71. Mounting frame; 72. Suction head; 73. Positioning block; 8. Positioning port; 9. Output end of Y-direction module. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0026] This application discloses a locking positioning fixture for pre-filled needles.

[0027] Reference Figure 1-6 The locking positioning fixture for pre-filled needle filling includes a honeycomb plate 2 and a positioning platform 3. The honeycomb plate 2 is provided with a number of mounting holes 21 for accommodating the pre-filled needle tube. A mounting tube 22 is coaxially connected above the mounting holes 21. The diameter of the mounting tube 22 is the same as the diameter of the mounting hole 21. The diameter of the mounting hole 21 is larger than the outer diameter of the pre-filled needle tube 1. A limiting ring 11 is coaxially connected to the top of the pre-filled needle tube 1. The outer diameter of the limiting ring 11 is larger than the outer diameter of the mounting tube 22.

[0028] The top surface of the positioning platform 3 is provided with a groove 31 for embedding the honeycomb panel 2 and a positioning hole 32 for the bottom end of the pre-filled needle tube 1 to pass through. The diameter of the positioning hole 32 is larger than the outer diameter of the pre-filled needle tube 1. The positioning platform 3 includes an upper plate 33, a lower plate 34 and a fixing ring plate 35. The fixing ring plate 35 is fixedly connected between the upper plate 33 and the lower plate 34. The outer peripheral surface of the upper plate 33 is flush with the outer peripheral surface of the lower plate 34. The outer peripheral surface of the fixing ring plate 35 is flush with the outer peripheral surface of the upper plate 33. The positioning hole 32 passes through the upper plate 33 and the lower plate 34.

[0029] A locking plate 4 is also provided between the upper plate 33 and the lower plate 34. The locking plate 4 is provided with a locking hole 41 for the bottom end of the pre-charge needle tube 1 to pass through. The diameter of the locking hole 41 is larger than the diameter of the mounting hole 21. The locking plate 4 is slidably set. The locking plate 4 can slide to press the pre-charge needle tube 1 against the mounting hole 21. The locking plate 4 can also slide to disengage from the pre-charge needle tube 1.

[0030] On one of the two opposing sides of the locking plate 4, a compression spring 5 is provided between the inner side of the adjacent fixing ring plate 35 and the locking plate 4. Figure 4 On the left side of the locking plate 4, there is a mating protrusion 42 (located in the attached plate). Figure 4On the right side of the locking plate 4, the fixing ring plate 35 has a relief groove 351 for the mating protrusion 42 to pass through. The compression spring 5 applies a force to the locking plate 4, pushing it toward the mating protrusion 42. The compression spring 5 pushes the locking plate 4 toward the mating protrusion 42 until the inner wall of the locking hole 41 mates with the inner wall of the positioning hole 32, thus pressing the outer walls of the pre-charge needle tube 1 radially together. At this time, the side of the locking plate 4 with the mating protrusion 42 abuts against the inner side of the adjacent fixing ring plate 35, and the end of the mating protrusion 42 away from the locking plate 4 protrudes out of the relief groove 351. Multiple compression springs 5 ​​are arranged at intervals to improve the uniformity of force on the locking plate 4.

[0031] A vertically arranged fixing plate 6 is provided at the mating protrusion 42. When the honeycomb plate 2 needs to be placed on the positioning platform 3 and the pre-charged needle tube 1 is inserted into the positioning hole 32, the side of the fixing plate 6 close to the mating protrusion 42 abuts against the outer side of the adjacent fixing ring plate 35, and the inner peripheral wall of the locking hole 41 disengages from the pre-charged needle tube 1. When the suction cup robot 7 picks up the honeycomb plate 2 and moves the positioning platform 3 until the mating protrusion 42 disengages from the fixing plate 6, the pressure spring 5 pushes the locking plate 4 towards the mating protrusion 42 until the inner wall of the locking hole 41 cooperates with the inner wall of the positioning hole 32, thus pressing the outer walls of the pre-charged needle tube 1 on both radial sides.

[0032] The suction cup robot 7 includes a dual-axis linear module, a mounting frame 71, suction heads 72, and positioning blocks 73. The mounting frame 71 is fixed to the output end 9 of the Y-direction module of the dual-axis linear module. Multiple suction heads 72 are arranged around the circumference of the mounting frame 71, and multiple suction heads 72 simultaneously suction the honeycomb panel 2. The positioning blocks 73 are symmetrically arranged on both sides of the mounting frame 71. The honeycomb panel 2, the upper plate 33, the locking plate 4, and the lower plate 34 are all provided with positioning openings 8 for the positioning blocks 73 to pass through. The positioning blocks 73 pass through the positioning openings 8, so that when the suction cup robot 7 moves the honeycomb panel 2, the positioning blocks 73 drive the honeycomb panel 2, the upper plate 33, the locking plate 4, and the lower plate 34 to move simultaneously.

[0033] During the process of the suction cup robot 7 lowering the honeycomb plate 2 so that the bottom end of the pre-filled needle tube 1 passes through the positioning hole 32, since the diameter of the mounting hole 21 is larger than the outer diameter of the pre-filled needle tube 1 and the diameter of the locking hole 41 is larger than the diameter of the mounting hole 21, it is convenient for the pre-filled needle tube 1 to be inserted into the positioning hole 32 and the locking hole 41. When the suction cup robot 7 picks up the honeycomb plate 2 and moves the positioning platform 3 to the point where the mating protrusion 42 is disengaged from the fixing plate 6, the pressure spring 5 pushes the locking plate 4 towards the mating protrusion 42 so that the inner wall of the locking hole 41 and the inner wall of the positioning hole 32 cooperate to press against the outer walls of the pre-filled needle tube 1 on both radial sides, so that the pre-filled needle tube 1 remains stable and avoids shaking or displacement. This ensures that the outlet of the discharge tube is aligned with the opening at the top of the pre-filled needle tube 1, and the material is accurately fed into the pre-filled needle tube 1 during filling. This not only avoids material waste but also improves the filling efficiency of the pre-filled needle.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A locking type positioning jig for pre-charged needle filling, characterized by: The device includes a honeycomb panel and a positioning platform. The honeycomb panel is provided with a plurality of mounting holes for accommodating pre-charged needle tubes. A mounting tube is coaxially connected above the mounting holes. The diameter of the mounting tube is the same as the diameter of the mounting hole. The diameter of the mounting hole is larger than the outer diameter of the pre-charged needle tube. A limiting ring is coaxially connected to the top of the pre-charged needle tube. The outer diameter of the limiting ring is larger than the outer diameter of the mounting tube. The top surface of the positioning platform is provided with a groove for embedding the honeycomb panel and a positioning hole for the bottom end of the pre-filled needle tube to pass through. The diameter of the positioning hole is larger than the outer diameter of the pre-filled needle tube. The positioning platform includes an upper plate, a lower plate and a fixing ring plate. The fixing ring plate is fixedly connected between the upper plate and the lower plate. The outer peripheral surface of the upper plate is flush with the outer peripheral surface of the lower plate. The outer peripheral surface of the fixing ring plate is flush with the outer peripheral surface of the upper plate. A locking plate is also provided between the upper plate and the lower plate. The locking plate is provided with a locking hole through which the bottom end of the pre-charge needle tube passes. The diameter of the locking hole is larger than the diameter of the mounting hole. The locking plate is slidably disposed. The locking plate can slide to press the pre-charge needle tube against the mounting hole, and the locking plate can also slide to disengage from the pre-charge needle tube.

2. The locking type positioning jig for pre-charged needle filling according to claim 1, characterized in that: On one of the two opposing sides of the locking plate, a compression spring is provided between one side and the inner side of the adjacent fixing ring plate, and a mating protrusion is provided on the other side. The fixing ring plate has a clearance groove for the mating protrusion to pass through. The compression spring applies a force to the locking plate in the direction of pushing the locking plate toward the mating protrusion. The compression spring pushes the locking plate toward the mating protrusion until the inner wall of the locking hole and the inner wall of the positioning hole meet, thus pressing the outer walls of the pre-charge needle tube on both radial sides together. At this time, the side of the locking plate with the mating protrusion abuts against the inner side of the adjacent fixing ring plate, and the end of the mating protrusion away from the locking plate extends out of the clearance groove.

3. The locking type positioning jig for filling of a pre-charged needle according to claim 2, wherein: The compression springs are arranged at intervals.

4. The locking type positioning jig for filling of a pre-charged needle according to claim 2, wherein: A vertically arranged fixing plate is provided at the mating protrusion. When the honeycomb panel needs to be placed on the positioning platform and the pre-charge needle tube is inserted into the positioning hole, the side of the fixing plate near the mating protrusion abuts against the outer side of the adjacent fixing ring plate, and the inner peripheral wall of the locking hole disengages from the pre-charge needle tube. When the suction cup robot grips the honeycomb plate and moves the positioning platform until the mating protrusion disengages from the fixing plate, the compression spring pushes the locking plate toward the mating protrusion until it engages with the inner wall of the locking hole, thus pressing the outer walls of the pre-filled needle tube radially against each other.

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