Glass needle cylinder flange width cutting device for pre-filled syringe

Abstract

The invention discloses a prefilled syringe glass needle cylinder flange width cutting device which comprises a base, an X-direction displacement mechanism is installed on the base, a Y-direction displacement mechanism is installed on the X-direction displacement mechanism, a motor support is installed on the Y-direction displacement mechanism, a servo motor, a speed reducer and a transmission shaft are installed on the motor support, and a double-face cam is installed at the tail end of the transmission shaft. The double-face cam comprises a disc-shaped wheel, cam-shaped grooves are formed in the two side faces of the disc-shaped wheel respectively, cam-shaped protrusions with different cam curves are arranged in the cam-shaped grooves respectively, cam curve grooves are formed between the outer contours of the cam-shaped grooves and the outer contours of the cam-shaped protrusions, a left cam curve groove is formed in the left side face of the disc-shaped wheel, and a right cam curve groove is formed in the right side face of the disc-shaped wheel. A right cam curve groove is formed in the right side face of the disc-shaped wheel, and a stroke difference exists between the left cam curve groove and the right cam curve groove. The end face and the two side faces of the glass needle cylinder are machined at the same time through the driving device through the design of the cam curve groove of a special structure and the compact sliding type design.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of forming processing of pre-filled syringe glass barrels. Specifically, the application relates to a flange cutting device for pre-filled syringe glass barrels. BACKGROUND

[0002] Pre-filled syringes integrate "drug storage" and "injection function", and are favored in the biological and pharmaceutical fields due to their advantages such as safety and convenience, high drug utilization rate, prevention of secondary cross-contamination, etc. They are accepted by more and more pharmaceutical companies, clinical medical staff and patients, and therefore the market demand continues to rise.

[0003] Glass barrels made of medium borosilicate have excellent chemical stability and thermal stability, good water and acid resistance, low alumina content, and no precipitate or glass chips when in contact with drugs for a long time, which makes them the best carrier for injection and vaccine drugs, and the key choice to ensure drug quality and patient safety. Medium borosilicate pharmaceutical glass barrels and their production equipment have long relied on imports, and it is imperative to seek independent research and development.

[0004] Pre-filled syringe glass barrel forming machines are key equipment for producing vaccine pre-filled syringe glass barrels, and a flange cutting device for pre-filled syringe glass barrels is a core component of the pre-filled syringe glass barrel forming machine.

[0005] The applicant Nanjing Light Machine Packaging Machinery Co., Ltd. has previously applied for an invention patent application with the title of a pre-filled syringe glass barrel clamping mechanism and the application number of 202510349796X, which discloses part of the core component, a clamping jaw head, i.e. a clamping jaw head body. The clamping jaw head body includes a hollow sleeve, a cylindrical end at the top of the sleeve, a threaded hole in the center of the cylindrical end for installing a bottle holder, and at least two clamping jaw supports on the outer circle of the cylindrical end. An inclined hole is provided on the clamping jaw support to accommodate the clamping jaw rod. The center lines of all inclined holes intersect with the center line of the threaded hole for installing the bottle holder at one point.

[0006] The application is a special flange cutting device for pre-filled syringe glass barrels in combination with the applicant's previous application. SUMMARY

[0007] The application provides a flange cutting device for pre-filled syringe glass barrels.

[0008] The technical solution of the application is as follows:

[0009] The utility model relates to a kind of pre-filled syringe glass needle cylinder flange cutting device, including base 21, X direction displacement mechanism is installed on base 21, Y direction displacement mechanism is installed on X direction displacement mechanism, motor support 15 is installed on Y direction displacement mechanism, servo motor 14, speed reducer 13, transmission shaft 2 are installed on motor support 15, the end of transmission shaft 2 is installed with double-sided cam 1, the double-sided cam 1 includes a disc-shaped wheel 101, cam-shaped groove is set in the two sides of disc-shaped wheel 101 respectively, cam-shaped projection 102 with different cam curves is respectively arranged in cam-shaped groove, the outer contour of cam-shaped groove is correspondingly parallel with the cam curve of cam-shaped projection 102, so that cam curve groove is formed between cam-shaped projection 102 and the outer contour of cam-shaped groove, wherein, left cam curve groove 103 is formed in the left side of disc-shaped wheel 101, right cam curve groove 104 is formed in the right side of disc-shaped wheel 101, left cam curve groove 103 and right cam curve groove 104 have stroke difference;First guide rail support 6 is fixed at the position of Y direction displacement mechanism away from motor support 15, the slider of first linear guide rail 5 is fixed on first guide rail support 6, left curve roller 4 is installed on the upper end of first linear guide rail 5, upper tool support 7 is clamped into the lower end of first linear guide rail 5, and blade groove 702 of upper tool support 7 is installed with upper blade 9;

[0010] The slider of second linear guide rail 5' is fixed on motor support 15, right curve roller 4' is installed on the upper end of second linear guide rail 5', right curve roller 4' is clamped into right cam groove 104, and the lower end of second linear guide rail 5' is fixed with Π type side tool support 8, the positioning groove 1101 of left side blade positioning block 11 is installed to the lower left end of Π type side tool support 8, the blade groove 1102 of left side blade positioning block 11 is installed with side blade 10, the blade groove 1202 of right side blade positioning block 12 is installed with another side blade 10, the positioning groove 1201 of right side blade positioning block 12 is installed to the lower right end of Π type side tool support 8, and the guide rail groove 801 of Π type side tool support 8 is clamped into the lower end of second linear guide rail 5';

[0011] The clamping mechanism 23 of last station stops with glass needle cylinder 22 softened by burning heat in the lower part of Y direction displacement mechanism, servo motor 14 starts, rotates with double-sided cam 1, left cam curve groove 103 reciprocates up and down with upper blade 9 through first linear guide rail 5, and right cam curve groove 104 reciprocates up and down with side blade 10 through second linear guide rail 5';

[0012] When upper blade 9 moves downward, press the upper end surface of glass needle cylinder 22 flange, due to the asymmetric setting of stroke difference of left cam curve groove 103 and right cam curve groove 104, so that side blade 10 moves upward simultaneously to complete flange cutting.

[0013] With the rotation of the double-sided cam 1, the upper blade 9 moves upward, leaving the flange surface of the glass needle cylinder 22, while the side blade 10 moves downward to the home position;

[0014] The glass needle cylinder 22 that has completed the width cutting enters the next station with the clamping mechanism 23;

[0015] At the same time, a new glass needle cylinder 22 is sent to this station, and the operation is repeated to realize continuous cutting.

[0016] The preferred technical scheme provided by the application is:

[0017] The X-direction displacement mechanism comprises: an X-direction adjusting block 18 is installed on the right side of the upper end of the base 21 and fastened, the groove 1701 of the front and rear sliding bracket 17 is clamped into the boss 2101 on the upper end of the base 21, the X-direction adjusting shaft 19 is passed through the hole of the X-direction adjusting block 18 and is sleeved with the X-direction shaft sleeve 20 on the X-direction adjusting shaft 19, and is fixed with a pin, and then the X-direction adjusting shaft 19 is screwed into the corresponding screw hole of the front and rear sliding bracket 17, the X-direction adjusting shaft 19 is rotated to ensure that the front and rear sliding bracket 17 can slide freely forward and backward without jamming, and then the front and rear sliding bracket 17 is fixed with the base 21 by screws.

[0018] The further preferred technical scheme provided by the application is:

[0019] The Y-direction displacement mechanism comprises: a Y-direction adjusting block 18' is installed on the upper end of the front and rear sliding bracket 17 and fastened, the groove 1601 of the upper and lower sliding bracket 16 is clamped into the guide rail surface 1702 on both sides of the front and rear sliding bracket 17 and is fastened with screws, the Y-direction adjusting shaft 19' is passed through the hole of the Y-direction adjusting block 18', and is sleeved with the Y-direction shaft sleeve 20' on the Y-direction adjusting shaft 19', and is fixed with a pin, and then the Y-direction adjusting shaft 19' is screwed into the corresponding screw hole of the upper and lower sliding bracket 16, the fastening screws of the upper and lower sliding bracket 16 are appropriately loosened, the adjusting shaft 19' is rotated to ensure that the upper and lower sliding bracket 16 can slide freely upward and downward without jamming, the fastening screws of the upper and lower sliding bracket 16 and the front and rear sliding bracket 17 are tightened after adjustment.

[0020] The further preferred technical scheme is:

[0021] By adjusting the upper and lower sliding bracket 16, the width cutting of the flange surface of the glass needle cylinder of different length sizes is met.

[0022] The still further preferred technical scheme is:

[0023] The waist-shaped hole 1103 of the left side blade positioning block 11 and the waist-shaped hole 1203 of the right side blade positioning block 12 are adjusted to adjust the position of the side blade 10, so that the distance between the two side blades 10 meets the requirements and ensures that the cut glass needle cylinder flange flat surface 2201 is centrally symmetrical.

[0024] Further preferred technical solutions are:

[0025] By replacing the upper blade 9 of different widths, cutting of flanges of different widths is realized.

[0026] Beneficial effects:

[0027] Advantages and technical effects of the present application:

[0028] 1. The present application realizes the simultaneous machining of the end face and the two side faces of the glass needle cylinder through a driving device by virtue of the design of the left and right cam curve grooves with stroke difference and the compact sliding design.

[0029] 2. The structure of the present application is compact and meets the requirements of work station layout.

[0030] 2. The device adopts a sliding design and is convenient to adjust.

[0031] 3. The device can be flexibly adjusted in height according to the different length sizes of the glass needle cylinder and meets the requirements of different specifications of glass needle cylinder.

[0032] 4. The device has high degree of automation and is simple to maintain. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a schematic view of the overall structure assembly of the present application;

[0034] Figure 2 is a schematic view of the overall structure assembly of the present application; Figure 1

[0035] Figure 3 is a schematic view of the overall structure assembly of the present application; Figure 1

[0036] Figure 4 is a schematic view of the overall structure assembly of the present application; Figure 3

[0037] Figure 5 is a schematic view of the overall structure assembly of the present application; Figure 3

[0038] Figure 6 is a schematic view of the overall structure assembly of the present application; Figure 3

[0039] Figure 7 is a schematic view of the overall structure assembly of the present application; Figure 1

[0040] Figure 8 is a schematic view of the overall structure assembly of the present application; Figure 1 ​​​​​​​

[0041] Figure 9 for Figure 1 Fig. 7 is a perspective view of the upper tool holder support 7;

[0042] Figure 10 for Figure 1 Fig. 8 is a perspective view of the Π-shaped side tool holder support 8;

[0043] Figure 11 for Figure 1 Fig. 9 is a perspective view of the upper tool blade 9;

[0044] Figure 12 for Figure 1 Fig. 10 is a perspective view of the side tool blade 10;

[0045] Figure 13 for Figure 1 Fig. 11 is a perspective view of the left side tool blade positioning block 11;

[0046] Figure 14 for Figure 1 Fig. 12 is a perspective view of the right side tool blade positioning block 12;

[0047] Figure 15 for Figure 1 Fig. 13 is a perspective view of the motor support 15;

[0048] Figure 16 for Figure 1 Fig. 14 is a perspective view of the up-down sliding support 16;

[0049] Figure 17 for Figure 1 Fig. 15 is a perspective view of the front-back sliding support 17;

[0050] Figure 18 for Figure 1 Fig. 16 is a perspective view of the base 21;

[0051] Figure 19 for Figure 2 Fig. 17 is a perspective view of the glass syringe 22;

[0052] Meaning of the reference signs in the drawings:

[0053] 1. double-sided cam,

[0054] 101. disc-shaped wheel, 102. cam-shaped protrusion, 103. left cam curve groove, 104. right cam curve groove;

[0055] 2. transmission shaft,

[0056] 201. key groove, 202. shaft head;

[0057] 3. end cap,

[0058] 4. Left curve roller, 4’. Right curve roller

[0059] 5. First linear guide rail, 5’. Second linear guide rail, 6. First guide rail support,

[0060] 7. Upper tool holder,

[0061] 701. Guide rail groove, 702. Tool blade groove;

[0062] 8. Π-shaped side tool holder,

[0063] 801. Guide rail groove;

[0064] 9. Upper tool blade, 10. Side tool blade,

[0065] 11. Left side tool blade positioning block,

[0066] 1101. Positioning groove, 1102. Tool blade groove, 1103. Waist-shaped hole;

[0067] 12. Right side tool blade positioning block,

[0068] 1201. Positioning groove, 1202. Tool blade groove, 1203. Waist-shaped hole;

[0069] 13. Reducer, 14. Servo motor, 15. Motor support, 1501. Flange;

[0070] 16. Up-down sliding support, 1601. Groove;

[0071] 17. Front-rear sliding support, 1701. Groove, 1702. Guide rail surface;

[0072] 18. X-direction adjustment block, 18’. Y-direction adjustment block,

[0073] 19. X-direction adjustment shaft, 19’. Y-direction adjustment shaft,

[0074] 20. X-direction shaft sleeve, 20’. Y-direction shaft sleeve,

[0075] 21. Base, 2101. Boss;

[0076] 22. Glass syringe, 2201. Flat surface;

[0077] 23. Clamping mechanism. DETAILED DESCRIPTION

[0078] 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 protection scope of the present invention.

[0079] Figure 1 This is a schematic diagram of the overall assembly structure of the present invention. Figure 2 for Figure 1 A three-dimensional structural diagram, combined with the attached Figure 1 , Figure 2 As shown, the pre-filled syringe glass syringe flange width cutting device of the present invention includes a base 21, an X-axis displacement mechanism mounted on the base 21, a Y-axis displacement mechanism mounted on the X-axis displacement mechanism, a motor bracket 15 mounted on the Y-axis displacement mechanism, a servo motor 14, a reducer 13, and a drive shaft 2 mounted on the motor bracket 15, and a double-sided cam 1 mounted at the end of the drive shaft 2.

[0080] Figure 3 for Figure 1 A three-dimensional structural diagram of the double-sided cam 1; Figure 4 for Figure 3 Cross-sectional view of the double-sided cam 1; Figure 5 for Figure 3 Left side view of the double-sided cam 1 in the image; Figure 6 for Figure 3 The right side view of the double-sided cam 1 in the image;

[0081] Combination Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, the double-sided cam 1 of the present invention includes a disc wheel 101. The disc wheel 101 has cam-shaped grooves on both sides, and cam-shaped protrusions 102 with different cam curves are provided in the cam-shaped grooves. The outer contour of the cam-shaped groove is parallel to the cam curve of the cam-shaped protrusion 102, so that a cam curve groove is formed between the cam-shaped protrusion 102 and the outer contour of the cam-shaped groove. The left side of the disc wheel 101 has a left cam curve groove 103, and the right side of the disc wheel 101 has a right cam curve groove 104. The left cam curve groove 103 and the right cam curve groove 104 have a stroke difference. The Y-axis moving mechanism is fixed at a position away from the motor bracket 15. The slider of the first linear guide rail 5 is fixed on the first guide rail bracket 6. The upper end of the first linear guide rail 5 is equipped with a left curve roller 4, which is inserted into the left cam curve groove 103. The guide groove 701 of the upper tool bracket 7 is inserted into the lower end of the first linear guide rail 5, and the upper blade 9 is installed in the blade groove 702 of the upper tool bracket 7.

[0082] wherein,

[0083] The X-direction displacement mechanism comprises: an X-direction adjusting block 18 is installed on the right side of the upper end of the base 21 and fastened; the groove 1701 of the front and rear sliding bracket 17 is clamped into the boss 2101 of the upper end of the base 21; the X-direction adjusting shaft 19 is passed through the hole of the X-direction adjusting block 18 and is sleeved with the X-direction shaft sleeve 20 on the X-direction adjusting shaft 19 and is fixed by a pin; the X-direction adjusting shaft 19 is screwed into the corresponding screw hole of the front and rear sliding bracket 17; the front and rear sliding bracket 17 is rotated to ensure that the front and rear sliding bracket 17 slides freely forward and backward without jamming; and the front and rear sliding bracket 17 is fixed to the base 21 by screws.

[0084] The Y-direction displacement mechanism comprises: a Y-direction adjusting block 18' is installed on the upper end of the front and rear sliding bracket 17 and fastened; the groove 1601 of the upper and lower sliding bracket 16 is clamped into the guide rail surface 1702 on both sides of the front and rear sliding bracket 17 and is fastened by screws; the Y-direction adjusting shaft 19' is passed through the hole of the Y-direction adjusting block 18' and is sleeved with the Y-direction shaft sleeve 20' on the Y-direction adjusting shaft 19' and is fixed by a pin; the adjusting shaft 19' is rotated to ensure that the upper and lower sliding bracket 16 slides freely upward and downward without jamming; and the fastening screws of the upper and lower sliding bracket 16 and the front and rear sliding bracket 17 are tightened after adjustment.

[0085] The inner lower end of the motor bracket 15 is fixed with the slider of the second linear guide rail 5'; the upper end of the second linear guide rail 5' is installed with a right curve roller 4'; the right curve roller 4' is clamped into the right cam curve groove 104; the lower end of the second linear guide rail 5' is fixed with a Π-shaped side tool bracket 8; the positioning groove 1101 of the left side blade positioning block 11 is installed at the left lower end of the Π-shaped side tool bracket 8; the blade groove 1102 of the left side blade positioning block 11 is installed with a side blade 10; the blade groove 1202 of the right side blade positioning block 12 is installed with another side blade 10; the positioning groove 1201 of the right side blade positioning block 12 is installed at the right lower end of the Π-shaped side tool bracket 8; and the guide rail groove 801 of the Π-shaped side tool bracket 8 is clamped into the lower end of the second linear guide rail 5';

[0086] The clamping mechanism 23 of the previous work station stops at the lower part of the Y-direction displacement mechanism with the heated and softened glass needle cylinder 22; the servo motor 14 is started to rotate with the double-sided cam 1; the left cam curve groove 103 drives the upper blade 9 to move up and down reciprocatingly through the first linear guide rail 5; and the right cam curve groove 104 drives the side blade 10 to move up and down reciprocatingly through the second linear guide rail 5'.

[0087] When the upper blade 9 moves downward, it presses against the upper end face of the glass syringe 22 flange. Due to the asymmetrical arrangement of the stroke difference between the left cam curve groove 103 and the right cam curve groove 104, the side blade 10 moves upward simultaneously to complete the flange cutting width.

[0088] As the double-sided cam 1 rotates, the upper blade 9 moves upward and away from the flange of the glass syringe 22, while the side blade 10 moves downward and returns to its original position.

[0089] The glass syringe 22, after being cut to the required width, moves to the next station along with the clamping mechanism 23;

[0090] At the same time, a new glass syringe 22 is delivered to this station, and the action is repeated to achieve continuous cutting.

[0091] The present invention can adjust the upper and lower sliding brackets 16 to meet the cutting width of the glass syringe flange surface of different lengths.

[0092] Adjust the position of the side blades 10 by using the waist-shaped hole 1103 of the left blade positioning block 11 and the waist-shaped hole 1203 of the right blade positioning block 12 to ensure that the distance between the two side blades 10 meets the requirements and that the cut glass syringe flange flat surface 2201 is symmetrical with the center.

[0093] By changing the upper blade 9 to different widths, flange faces of different widths can be cut.

[0094] This device must be assembled before use.

[0095] Step 1: Place base 21 ( Figure 18 (As shown) It is fixed to the table surface with screws and pins.

[0096] Step 2: Install the X-axis adjustment block 18 on the upper right side of the base 21 and tighten it. Then, move the front and rear sliding bracket 17 ( Figure 17 As shown in the figure, the groove 1701 is inserted into the boss 2101 at the upper end of the base 21. The X-axis adjustment shaft 19 is passed through the hole of the X-axis adjustment block 18, and the X-axis bushing 20 is fitted onto the X-axis adjustment shaft 19 and fixed with a pin. Then, the X-axis adjustment shaft 19 is screwed into the corresponding screw hole of the front and rear sliding bracket 17. The X-axis adjustment shaft 19 is rotated to ensure that the front and rear sliding bracket 17 slides freely in front and behind without jamming. Then, the front and rear sliding bracket 17 is fixed to the base 21 with screws.

[0097] Step 3: Install the Y-axis adjusting block 18' on the upper end of the front and rear sliding brackets 17 and tighten it. Then, install the upper and lower sliding brackets 16 ( Figure 16The groove 1601 is clamped into the guide rail surface 1702 on both sides of the front and rear sliding bracket 17, and is fastened with screws. The Y-direction adjusting shaft 19' passes through the hole of the Y-direction adjusting block 18', and is sleeved with the Y-direction shaft sleeve 20' on the Y-direction adjusting shaft 19'. The Y-direction adjusting shaft 19' is fixed with a pin, and is screwed into the corresponding screw hole of the upper and lower sliding bracket 16. The fastening screws of the upper and lower sliding bracket 16 are appropriately loosened, the Y-direction adjusting shaft 19' is rotated, the upper and lower sliding bracket 16 is ensured to slide up and down freely without jamming, and the fastening screws of the upper and lower sliding bracket 16 and the front and rear sliding bracket 17 are tightened after adjustment.

[0098] Fourth step: install the motor bracket 15 (as shown in Figure 15 ) in the corresponding position of the upper and lower sliding bracket 16, fix it with a pin, and fasten it with screws. Figure 8

[0099] Fifth step: assemble the servo motor 14 and the speed reducer 13, then install the right end shaft head 202 of the transmission shaft 2 (as shown in Figure 7 ) into the corresponding hole of the speed reducer 13, fix it with a pin, and fasten it with screws. The above assembly is sleeved into the hole of the motor bracket 15, so that the mounting surface of the speed reducer 13 contacts the flange 1501, and is fastened with screws. The key is installed in the left end key groove 201 of the transmission shaft 2, sleeved into the double-sided cam 1, and pressed tightly with the end cover 3. When installing, attention should be paid to the direction of the end surface groove of the double-sided cam 1 not to be reversed.

[0100] Sixth step: install the left curve roller 4 at the upper end of the first linear guide rail 5, clamp the left curve roller 4 into the left cam curve groove 103, and fix the slider of the first linear guide rail 5 at the corresponding position of the first guide rail bracket 6. Figure 9 Install the upper blade 9 (as shown in Figure 11 ) in the blade groove 702 of the upper tool holder 7 (as shown in ), and clamp the guide rail groove 701 of the upper tool holder 7 into the lower end of the first linear guide rail 5, and fasten it with screws.

[0101] Figure 13 Seventh step: install the right curve roller 4' at the upper end of the second linear guide rail 5', clamp the right curve roller 4' into the right cam curve groove 104, and fix the slider of the second linear guide rail 5' at the corresponding position of the motor bracket 15. Figure 12 Install the side blade 10 (as shown in Figure 10 ) in the blade groove 1102 of the left blade positioning block 11 (as shown in Figure 14 ​The other side blade 10 is put into the blade slot 1202 of the left blade positioning block 11, the positioning slot 1201 of the right blade positioning block 12 is fixed to the lower right end of the Π-shaped side tool holder 8, the guide rail slot 801 of the Π-shaped side tool holder 8 is clamped into the lower end of the second linear guide rail 5', and the screws are fastened.

[0102] After the assembly is completed, adjustment is carried out to ensure that the first linear guide rail 5 and the second linear guide rail 5' slide up and down freely, and the double-sided cam 1 operates flexibly with the left curved roller 4 and the right curved roller 4'.

[0103] Before use, the centering must be adjusted: the up-and-down sliding holder 16 is adjusted according to the length of the glass needle cylinder 22, the front-and-back sliding holder 17 is adjusted according to the center of the glass needle cylinder clamping mechanism 23, the upper blade 9 is aligned with the glass needle cylinder flange,

[0104] The positions of the side blades 10 are adjusted through the waist-shaped hole 1103 of the left blade positioning block 11 and the waist-shaped hole 1203 of the right blade positioning block 12, so that the distance between the two side blades 10 meets the requirements, and the cut glass needle cylinder flange flat surface 2201 is ensured to be symmetrically centered.

[0105] The working principle of the mechanism is as follows:

[0106] The clamping mechanism 23 of the previous station stays at the lower part of the device with the glass needle cylinder 22 heated and softened (as shown in the figure) Figure 19 The servo motor 14 is started to rotate the double-sided cam 1, the left cam curve slot 103 drives the upper blade 9 to move up and down reciprocatingly through the first linear guide rail 5, and the right cam curve slot 104 drives the side blade 10 to move up and down reciprocatingly through the second linear guide rail 5'.

[0107] Due to the different cam curves of the left cam curve slot 103 and the right cam curve slot 104, the left cam curve slot 103 and the right cam curve slot 104 have different strokes, so that the first linear guide rail 5 and the second linear guide rail 5' driven thereby have different strokes, and there is a stroke difference, so that when the first linear guide rail 5 drives the upper blade 9 to move downward, the upper blade 9 presses the upper end surface of the glass needle cylinder flange, and the second linear guide rail 5' drives the side blade 10 to move upward at the same time to complete the cutting of the flange.

[0108] With the rotation of the double-sided cam 1, the upper blade 9 moves upward to leave the flange surface of the glass needle cylinder 22, and the side blade 10 moves downward to return to the original position.

[0109] The glass needle cylinder 22 with the cut flange enters the next station with the clamping mechanism 23, and at the same time, a new glass needle cylinder 22 enters the station, and the above operation is repeated to realize continuous cutting.

[0110] The embodiments described above comprise only some embodiments of the application but not all technical solutions of the application. All other embodiments obtained by a person of ordinary skill in the art without creative effort based on the embodiments of the application belong to the protection scope of the application.

Claims

1. A pre-filled syringe glass barrel flange cutting device, comprising a base (21), an X-direction displacement mechanism mounted on the base (21), a Y-direction displacement mechanism mounted on the X-direction displacement mechanism, a motor support (15) mounted on the Y-direction displacement mechanism, a servo motor (14), a speed reducer (13) and a transmission shaft (2) mounted on the motor support (15), characterized in that, The end of the drive shaft (2) is equipped with a double-sided cam (1). The double-sided cam (1) includes a disc wheel (101). Cam grooves are respectively opened on both sides of the disc wheel (101). Cam protrusions (102) with different cam curves are respectively provided in the cam grooves. The outer contour of the cam groove is parallel to the cam curve of the cam protrusion (102). Thus, a cam curve groove is formed between the cam protrusion (102) and the outer contour of the cam groove. The left side of the disc wheel (101) is formed with a left cam curve groove (103), and the right side of the disc wheel (101) is formed with a right cam protrusion. The wheel curve groove (104), the left cam curve groove (103) and the right cam curve groove (104) have a stroke difference; the Y-axis moving mechanism is fixed at a position away from the motor bracket (15) with a first guide rail bracket (6), the slider of the first linear guide rail (5) is fixed on the first guide rail bracket (6), the upper end of the first linear guide rail (5) is equipped with a left curve roller (4), the left curve roller (4) is snapped into the left cam curve groove (103), the guide rail groove (701) of the upper tool bracket (7) is snapped into the lower end of the first linear guide rail (5), and the upper blade (9) is installed in the blade groove (702) of the upper tool bracket (7); The slider of the second linear guide (5') is fixed on the lower inner side of the motor bracket (15). The upper end of the second linear guide (5') is equipped with a right curved roller (4'), which is then inserted into the right cam curved groove (104). The lower end of the second linear guide (5') is fixed with a Π-shaped side tool bracket (8), and the positioning groove (1101) of the left blade positioning block (11) is inserted into the Π-shaped side tool bracket. (8) At the lower left end, the side blade (10) is installed in the blade groove (1102) of the left blade positioning block (11), and the other side blade (10) is installed in the blade groove (1202) of the right blade positioning block (12). The positioning groove (1201) of the right blade positioning block (12) is installed at the lower right end of the Π-shaped side tool holder (8), and the guide rail groove (801) of the Π-shaped side tool holder (8) is inserted into the lower end of the second linear guide rail (5'). The clamping mechanism (23) of the previous station, carrying the heated and softened glass syringe (22), stops at the lower part of the Y-axis moving mechanism. The servo motor (14) starts and rotates the double-sided cam (1). The left cam curve groove (103) moves up and down through the first linear guide rail (5) with the upper blade (9). At the same time, the right cam curve groove (104) moves up and down through the second linear guide rail (5') with the side blade (10). When the upper blade (9) moves downward, it presses against the upper end face of the glass syringe (22) flange. Due to the stroke difference between the left cam curve groove (103) and the right cam curve groove (104), the side blade (10) moves upward at the same time to complete the cutting width of the flange. As the double-sided cam (1) rotates, the upper blade (9) moves upward and away from the flange of the glass syringe (22), while the side blade (10) moves downward and returns to its original position. The glass needle cylinder (22) with the width cut is sent to the next station with the clamping mechanism (23); At the same time, a new glass needle cylinder (22) is sent to this station, and the operation is repeated to realize continuous cutting.

2. A pre-filled syringe glass barrel flange width cutting device according to claim 1, characterized in that, The X-direction displacement mechanism comprises: an X-direction adjusting block (18) is installed on the right side of the upper end of the base (21) and fastened, the groove (1701) of the front and rear sliding bracket (17) is clamped into the boss (2101) on the upper end of the base (21), the X-direction adjusting shaft (19) passes through the hole of the X-direction adjusting block (18), the X-direction shaft sleeve (20) is sleeved on the X-direction adjusting shaft (19) and fixed by a pin, the X-direction adjusting shaft (19) is screwed into the corresponding screw hole of the front and rear sliding bracket (17), the X-direction adjusting shaft (19) is rotated to ensure that the front and rear sliding bracket (17) can slide freely forward and backward without jamming, and then the front and rear sliding bracket (17) is fixed to the base (21) by screws.

3. A pre-filled syringe glass barrel flange width cutting device according to claim 2, characterized in that, The Y-direction displacement mechanism comprises: a Y-direction adjusting block (18') is installed on the upper end of the front and rear sliding bracket (17) and fastened, the groove (1601) of the upper and lower sliding bracket (16) is clamped into the guide rail surface (1702) on the two sides of the front and rear sliding bracket (17) and fastened by screws, the Y-direction adjusting shaft (19') passes through the hole of the Y-direction adjusting block (18'), the Y-direction shaft sleeve (20') is sleeved on the Y-direction adjusting shaft (19') and fixed by a pin, and then the Y-direction adjusting shaft (19') is screwed into the corresponding screw hole of the upper and lower sliding bracket (16); the fastening screws of the upper and lower sliding bracket (16) are appropriately loosened, the Y-direction adjusting shaft (19') is rotated to ensure that the upper and lower sliding bracket (16) can slide freely upward and downward without jamming, and then the fastening screws of the upper and lower sliding bracket (16) and the front and rear sliding bracket (17) are tightened.

4. A pre-filled syringe glass barrel flange width cutting device according to claim 3, characterized in that, By adjusting the upper and lower sliding bracket (16), the cutting width of the flange face of the glass needle cylinder with different lengths and sizes is met.

5. A pre-filled syringe glass barrel flange width device according to claim 1, wherein, The positions of the side blades (10) are adjusted through the waist-shaped holes (1103) of the left side blade positioning blocks (11) and the waist-shaped holes (1203) of the right side blade positioning blocks (12) to make the distance between the two side blades (10) meet the requirements and ensure that the cut glass needle cylinder flange flat face (2201) is centrally symmetrical.

6. A pre-filled syringe glass barrel flange width device according to claim 5, wherein, By replacing the upper blades (9) with different widths, the cutting of flanges with different widths is realized.

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