US2097130A - Safety take-out for glassware making machines - Google Patents

Description

0a. 26, 1937. E. MILLER 2,0 7, 3

- SAFETY TAKE-OUT FOR GLASSWARE MAKING MACHINES Filed Oct. v9, 1933 r 5 Sheets-Sheet l 3m entor EDWARD MILLER 88 Maj Gttorneg Oct. 26 1937. 'E'. MILLER I SAFETY TAKE-OUT FOR GLASSWARE MAKING MACHINES Filed Oct. 9, 1953 s Sheets-Sheet 2 n 3maentor EDWARD MILLER (Ittorneg j Oct. 26, 1937. MILLER v 2,097,130

SAFETY TAKE-OUT FOR GLASSWARE MAKING MACHINES Filed Oct. 9, 1933 3 Sheets-Sheet3 cow O cum Snventor 1 EDWARD'MlLLER attorneg Patented Oct. 26, 1937 PATENT orFiE SAFETY TAKE-OUT MAKIN FOR GLAS SWARE G MACHINES Edward Miller, Columbus, ()hio, assignor to Lynch Corporation, a corporation of Indiana Application October 9, 1933, Serial No. 692,759

26 Claims.

The present invention relates to glassware forming machines and more particularly to mechanism for automatically removing ware from a mold of the machine, moving it laterally and depositing it upon a suitable support. Such mechanism is commonly termed a take-out mechanism.

More particularly the present invention concerns a take-out means and its arrangement in respect to the ware making machine and because such a take-out is at one point or station in the circle of travel of the mold supports it is imp-ortant to provide means avoiding injury to the take out means by collision of the moving mold or molds with the take-out in the event of the failure of the latter to operate properly, hence it is the principal object of the present invention to provide an improved take-out mechanism in which the parts yield and are unharmed in the event of such collision. One of the principal aims and objects of the invention is to improve the construction of take-out mechanism by providing safety means for prevening injury to the take-out mechanism in the event of collision with another part of the machine, as for example, the moving mold. Other objects and advantages will appear from a consideration of the accompanying drawings and the following description.

In the accompanying drawings illustrating an example of the invention- Figure l is an elevation with parts in section and with parts broken out illustrating suflicient of a glass ware making machine with the takeout according to my invention applied thereto.

Fig. 2 is a detail in plan view illustrating blow mold sections or cages separated and in position to permit the operation of the take-out means.

Fig. 3 is a plan view on a larger scale of the take-out mechanism illustrating piping of the air pressure system for operating the same.

Fig. 4 is a section on the line IVIV, Fig. 3, looking to the right.

Fig. 5 is a side elevation of the mechanism as shown in Fig. 3 with the piping omitted.

Fig. 6 is a view in elevation of the right hand end of Fig. 5.

Fig. 7 is a view like that shown in Fig. 3 but on a larger scale and broken out with the spool valve for operating the ware gripper arms in section.

Fig.8 is a vertical section of the mechanism on the line VIIIVIII Fig. 7 with parts broken out vertically.

Fig. 9 is a view in elevation of the right hand end of Fig. 8 with the end tripper arm omitted.

Fig. 10 is a half section and half elevation of the spool valve for causing the reciprocation of the piston carrying the gripper head.

Fig. 11 is a detail sectional view on a larger scale than appears in Fig. 8 of one of the tripper valves for shifting the gripper head spool valve to change the direction of pressure.

Fig. 12 is a view looking at the left hand side of Fig. 11.

The invention is advantageously illustrated in connection with glassware forming machines em- 10 bodying a parison mold support A and a finishing mold support B. The parison mold support A is provided with the usual parison molds in which parisons D may be shaped in any suitable manner. The finishing mold support is advantageously movable and carries a plurality of finishing or blow molds F into which the parisons are trans: ferred and blown to finished articles E as is usual. As is customary in such machines, the finish ing molds F are automatically opened as the molds approach the discharge position where the finished ware is to be removed, the ware in this position being supported on the mold bottom G preparatory to being gripped by the take-out mechanism and transferred to the travelling belt or other support H.

The take-out mechanism for removing the ware from the machine may advantageously comprise a gripping head l9 fixed upon the end of a rod' 22 carrying a piston 2| working within a pneumatically operated cylinder 20 which may be securely clamped to a stationary column 0 of the machine.

A guide bar 23 is securely supported in the fixed supports carried by the cylinder 2G and has a portion extending laterally beyond the end of the cylinder and in substantially vertical alinement with the piston 22. The rod 23 slidably carries a spool bearing 24 which is mounted in an arcuate shaped limiting yoke 25 secured to the gripper head H) (see Figs. 8 and 9). Thus the outer end of the piston rod 22 adjacent the gripper head is supported against deflection by the bearing 24 and rod 23. The arcuate shaped limiting yoke 25 may advantageously be of the form illustrated in Fig. 9, being curved about a center at the piston rod 22 so as to permit rotating movements of the gripper head and piston rod elements to the guide rod 23 within a limited region. A spring 26 connected at one end to the gripper headand at its opposite end to the bearing 24 serves to hold the gripping head in normal upright position.

The gripping head l9 comprises a pair of gripping jaw levers 21 herein illustrated as of the bell crank lever type, being supported on pins 28 .55

in the lower end 'of a sleeve 3| surrounding the block 29, said block being fixedly connected to the lower end of the piston member 39, reciprocable vertically in a cylinder formed in-the gripper head (see Fig. 8). The sleeve: 3i constitutes an adjustable sheath for the block 29 and is slidable on said block. The sleeve may advantageously be provided with laterally perforated ears surrounding parallel vertical rods 32 carried by the gripper head l9, said rods being headed at their lower ends. A spool valve 33 mounted at the forward end of the gripping head I9 is designed to reciprocate the piston 39 within its cylinder and in turn operate the jaw levers 27 either to grip and lift the ware or lower and release the ware.

The upper short arms of the gripper jaw levers 21 are bifurcated (see Fig. 9) and each bifurcation is engaged by a transverse pin 34 mounted in the block 29 so that when the block 29 and sleeve 3! are relatively shifted, the gripper jaws are swung apart or toward each other, according to the direction of shifting. For example, on the downward movement of the block the sleeve is arrested by the heads of the rods 32, and as the block 29 is further shifted downward in relation to the sleeve the gripper jaws are moved apart. Conversely, when'the movement of the block 29 is upward, the jaws are moved toward each other. The jaws are opened on the final portion of the downward stroke and closed on the final portion of the upward stroke so that upward and downward strokes of the piston serve respectively to grip and lift the ware and then lower and release the ware.

The above described relative shifting movements of the block 29 and sleeve 3i may be adjustably controlled and regulated by vertical adjusting screws 35 and 36 oppositely located on the sleeve 91 so that their ends engage a part 38 of the block 29 slidable in a vertical slot 37 in the sleeve. By adjusting said screws 35 and 35 the degree of separation of the gripping jaws is made such that they straddlingly embrace the opposite sides of the neck of the ware and subsequently engage loosely the neck of the bottle or other ware resting on the mold bottom G in the open mold position. A spring 39, which may advantageously surround the pins 32 serves to urge the sleeve 3! downwardly around the block 29 and thus urge the jaws 27 toward closed position.

Fixedly secured to the outer end of the stationary rod 23 is a bracket or arm 49 having a downwardly extending portion carrying a horizontal set screw M in alinement with stem 42 of check Valve 43 held normally closed by a spring (see Fig. 11). The check valve 43 controls the admission of air to a pneumatically operated spool valve within the casing 33 which controls the flow of fluid pressure alternately above and below the piston 39. Thus at the end of the outward stroke of the piston 2i the'stem d2 of the check valve 43 engages the adjusting screw 4! and permits the flow of fluid pressure to shift the spool valve within the casing 33 and direct pneumaticpressure to the top of the piston 39, to lower and release the ware. The second bracket mem ber 45 is also carried by the guide rod 23 adjacent the end of the cylinder 29 and has a horizontally extending stop member 45 in the path of a stem 4'! of a check valve (see Figs. 3 and '7) similar in construction to the check valve 93 and operative to reverse the direction of pressure to the spool valve within the casing 33 and consequently the piston 30.

The horizontal reciprocation of the piston rod aotma operation steady pressure is applied to the spool valve 48 through line 5! (see Fig. 3). Fluid pressure is alternately admitted to the opposite ends of the spool valve 48 by the timer pipes 49 and 59 to alternately shift the spool valve within the casing 38 in the opposite direction andthus control thefiow of air under pressure to the opposite ends of the cylinder 29. For example, air being admitted to the spool valve casing from the timer line 99, the spool valve (see Fig. 10) is shifted to the right, admitting air from the steady pressure line 5! to the end of the cylinder 29, thus moving the piston and gripper head outwardly. Conversely, when air. is admitted through line 50 the spoolvalve within the casing 59 is shifted to the left (Fig. 10) admitting air from the steady pres sure line 5i to the outer end of the cylinder 20 and moving the gripper head and piston inwardly.

The reciprocative movements of the piston 2| within the cylinder 20 are cushioned toward the ends of their stroke by the provision of by-pass lines 52 and 56 (see Fig. 3) connected to the fluid pressure supply lines leading to the opposite ends of cylinder 20. The endmost lines are provided respectively with check valves 54 and 57 which permit the free flow of fluid pressure to the cylinder but check the exhaust there- 'from. Thus, for example, during the inward movement of the piston 2! in the cylinder, pressure air is appliedto the forward end of the cylinder 29 and the line. The air pressuf'e ahead of the pistonfreely exhausts through line 52 until the piston has moved inwardly sufficiently to cover up line 52. Further exhaust is checked by the check valve 54 so that the reciprocative movements are adequately cushioned.

In operation the gripping head normally overlies the finished bottle in the open mold, the gripping tongs being in lowered open position. Upward movement of the piston 39 in the gripper head i9 first causes relative upward movement of the block 29 relative tothe sleeve, causing the gripping tongs to close and grip the ware. Continued upward movement causes the block 29 and sleeve 3! to move in unison, lifting the ware from the bottomplate G. At, this point, air supplied from the timer line 49, shifts spool valve in casing 48 to admit air under pressure to the inner end of the cylinder 20, moving the piston 39, piston rod 2! and gripping device with its supported ware outwardly. At the end of the outward stroke, the stern of the valve 43 engages the adjusting screw 4I admitting air to the casing 33 on the gripper head 29 and reverses the spool valve therein to lower the piston 30. During the initial downward movement of the piston 3 9, the block 29 and sleeve 3| move in unison to lower the ware. When the ears of the sleeve engage the headed lower ends of the guide pins 32, howeven downward movement of the sleeve is arrested and continued downward movement of the block, acting as the short arms of the bell crank lever tongs 21, acts to,open them, releasing the ware on the conveyor or other support. .Air from the timer controlled line 50 then reverses the air pressure in'the cylinder 29 to move the piston 2| andgripper head inwardly and engage another article.

Should the take-out mechanism become jammed with another part of the machine, as for example, a moving mold, the gripper head 29 may rock or swing about the axis of the piston rod 22 and in a direction normal to its direction of lateral travel, while still maintaining supporting engagement with the supporting guide bar 23.

My invention is not to be restricted to the specific details illustrated and described, which are intended solely as illustrative 'of the invention.

What I claim is:

1. A glass ware take-out mechanism for a glass ware forming machine including a plurality of traveling blow molds, said take-out including a head carrying a pair of gripper jaws, means for moving said head and jaws back and forth between ware-taking and ware-releasing positions, means for actuating said jaws to take and release respectively the ware and supporting means for the head movably connected thereto and constructed and arranged to permit rotation of the head about a horizontal axis, and means for yieldingly holding said head against rotation relative to said supporting means.

2. A glass ware take-out mechanism for a glass ware forming machine including a plurality of traveling blow molds, said take-out including a head carrying a pair of gripper jaws, means including a cylinder and a piston and rod for moving said head and jaws back and forth between ware taking and ware releasing positions, means for actuating said jaws to take and release respectively the ware and means above the head and connected thereto for supporting and guiding the head during its back-and-fourth movements and permitting working of said head about a horizontal axis.

3. A glass ware take-out mechanism for a glass ware forming machine including a plurality of traveling blow molds, said take-out including a head carrying a pair of gripper jaws, means including a cylinder and a piston and rod for moving said head and jaws back and forth between ware taking and ware releasing positions, means for actuating said jaws to take and release respectively the ware, and supporting means above the head and loosely connected thereto for supporting said head and permitting it to work laterally on the axis of said piston rod and means whereby said head is yieldingly held from lateral movement in normal operating position.

4. A glass ware take-out mechanism for a glass ware forming machine including a plurality of traveling blow molds, said take-out including a head carrying a pair of gripper jaws, means including a cylinder and a piston and rod for moving said head and jaws back and forth between ware taking and ware releasing positions, means for actuating said jaws to take and release respectively the ware, said head being carried by said piston rod and rockable laterally on the axis of said piston rod out of normal position in the event of collision of a mold therewith, and means whereby said head is yieldingly held from lateral movement in normal operating position.

5. A glass ware take-out mechanism for a glass ware forming machine including a plurality of traveling blow molds, said take-out including a head carrying a pair of gripper jaws, means including a cylinder and a piston and rod for moving said head and jaws back and forth between ware taking and ware releasing positions, means for actuating said jaws to take and release respectively the ware, said head being conwith said piston rod out of normal position in the event of collision of a mold therewith, and means whereby said head is yieldingly held from lateral movement in normal operating position.

6. A take-out mechanism for glassware forming machines having a forming mold comprising a ware-gripping device, means for moving said gripping device laterally toward and from said mold, and supporting means for said gripping device including a rockable mounting permitting the latter to move out of its normal path of movement toward and from said mold.

7. A take-out mechanism for glassware forming machines having a forming mold comprising a ware-gripping device, means for moving said gripping device laterally toward and from said mold including a horizontally travelling member, and supporting means for the gripping device including a rockable mounting permitting the latter to move out of its normal path of movement toward and from said mold.

8. A take-out mechanism for glassware forming machines having a forming mold comprising a ware gripping device, means for movingsaid gripping device laterally toward and from said mold including a horizontally travelling member, and supporting means loosely connected to said device for guiding said device in its lateral movements permitting said device and member to rock about a horizontal axis, so that the gripping device may move out of its normal path of movement toward .and away from said mold.

'9. A take-out mechanism for glassware forming machines having a forming mold, comprising a ware-gripping device, means acting nor-' mally to hold said gripping device in vertically disposed position, means for imparting a lateral horizontal movement to said gripping device, and means for supporting said gripping device and having loose connection therewith permitting said gripping device to swing out of its normal vertical position and in a direction normal to its lateral horizontal travel.

10. A take-out mechanism for glassware forming machines having a forming mold, comprising a ware-gripping device, means acting normally to hold said gripping device in vertically disposed position, means for imparting a lateral horizontal movement to said gripping device, a stationary support for supporting said gripping device during its horizontal travel and having a slotted connection with said device for permitting said gripping head to swing out of its normal vertical position and relative to said support and to its lateral horizontal travel.

11. A take-out mechanism for glassware forming machines having a forming mold comprising a ware gripping device, a horizontally travelling member for moving said gripping device laterally toward and fromthe mold, stationary sup- 7 cylinder and piston mechanism, said gripping device being carried by said piston to be moved thereby laterally toward and from the mold, a stationary supporting guide bar above the piston for supporting said gripping device during its lateral travel, and a slotted connection between said gripping device and guide bar permitting said gripping device to be moved relative to the direction of its travel toward and from the mold.

- stationary supporting guide bar above the piston for supporting said gripping device during its 1at- 14. A take-out mechanism for glassware forming machines having a forming mold, comprising a ware-gripping device, a horizontally disposed cylinder and piston mechanism, said gripping device being carried by said piston to be moved hereby laterally toward and from the mold, a stationary supporting guide bar above the piston for supporting said gripping device during its lateral travel, and means on said gripping device embracing said guide bar permitting the gripping device to be moved in a direction normal to its lateral travel toward and from the mold.

15. A take-out mechanism for glassware forming machines having a formingmold, comprising a ware-gripping device, a horizontally disposed cylinder and piston mechanism, said gripping device being carried by said piston to be moved thereby laterally toward and irom'the mold, a

eral travel, and an arcuate slotted yoke member carried by saidgripping device and embracing said guide bar, permitting said gripping device to move in a direction normal to its direction of lateral travel toward and from the mold, and spring means connecting the guide bar and gripping device acting normally to hold said gripping device in vertical position.

16. Ina glassware forming machine, a waregripping mechanism comprising a body member, an actuating member housed and vertically movable in said body member, a head secured to said actuating member, a sleeve member surrounding said head bodily movable therewith but slightly movable vertically with reference thereto the movement of said'sleeve bodily being controlled solely by the movement of said head, a pair of ware-gripping tongs pivotally connected to said sleeve and head, and resilient means acting upon said sleeve member operative to urge said tongs to closed position. g r

17. In a glassware forming machine, a waregripping mechanism comprising a body member, an actuating member housedand vertically movable in said body member, a head secured to said actuating member, a sleeve member surrounding said head bodily movable therewith but slight- 1y movable vertically with reference thereto the movement of said sleeve bodily being controlled solely by the movement of said head, a pair of ware-gripping tongs pivotally connected to said sleeve and head, means to variably adjust the position of said head and sleeve axially with reference to each other, and resilient means acting upon said sleeve member operative to urge said tongs to closed position.

18. In a glassware forming machine, a waregripping mechanism comprising a body member, an actuating member vertically movable in said body member, a head secured to said actuating member, a sleeve membersurrounding said head and movable vertically'with reference thereto, a pair of ware gripping tongs pivotally connected to said sleeve and head, means to variably adjust.

the position of said head and sleeve axially with reference to each other, including a part fixed on said head and adjusting means carried by said sleeve and engaging said part, and resilient means acting upon said sleeve member operative to urge said tongs to closed position.

19. In a glassware, forming machine, a waregripping mechanism comprising a body member having a fluid pressure chamber therein, a fluid pressure operated actuating member vertically movable in said body member, a head secured to said actuating member, a sleeve member surrounding said head bodily movable therewith but slightly movable vertically with reference thereto the movement of said sleeve bodily being controlled solely by the movement of said head, a pair of ware-gripping bell crank levers pivotally connected to said sleeve member and operatively connected to said head, and resilient means acting upon said sleeve member and operative to urge said levers to closed ware-gripping position.

20. In a glassware forming machine, a waregripping mechanism comprising a body member,

a single actuating member housed and vertically movable in said body member, a head fixedly secured to said actuating member, a sleeve member surrounding said head and movable vertically with reference thereto, a pair of ware-gripping bell crank levers pivotallyconnected to said sleeve member and operatively connected tosaid head, means for adjustably Varying the relative axial position of said sleeve member and head to vary the normal open position of said levers, and resilient means acting upon said sleeve member and operative to urge said levers to closed waregripping position.

21. In a glassware forming machine, a waregripping mechanism comprising a body having a vertically disposed cylindrical fluid pressure receiving bore therein, a. piston vertically movable within said bore, a head carried by the lower end of said piston, a sleeve member surrounding and bodily movable with and only by said head, a pair of ware-gripping bell crank lever tongs pivotally supported by said sleeve member and operatively connected to said head resilient means acting upon the sleeve member to urge said tongs into closed ware-gripping position, means for operating said piston vertically in said bore, the

gripp ing mechanism comprising a body havinga vertically disposed cylindrical fluid pressure receiving bore therein, a piston vertically movable within said bore, a head carried by the lower end of said piston, a sleeve member surrounding and movable with said head, a pair of ware-gripping bell crank lever tongs pivotally supported by said sleeve member and operatively connected to said head, resilient means acting upon the sleeve member to urgesaid tongs into closed ware-gripping position, means for operating said piston vertically in said bore, the downward movement of said piston carrying with it the head and sleeve member to lower the gripping tongs and supported ware, and means to limit the downward movement of said sleeve member independently of said head whereby additional downward movement of said actuator and head operates upon the bell crank lever tongs to cause them to open and release the ware.

23. In a glassware forming machine, a waregripping mechanism comprising a body having a vertically disposed cylindrical fluid pressure receiving bore therein, a piston vertically movable within said bore, a head carried by the lower end of said piston, a sleeve member surrounding and movable with said head, a pair of ware-gripping bell crank lever tongs pivotally supported by said sleeve member and operatively connected to said head, resilient means acting upon the sleeve member to urge said tongs into closed ware-gripping position, means for operating said piston vertically in said bore, the downward movement of said piston carrying with it the head and sleeve member to lower the gripping tongs and supported ware, guide means for guiding the sleeve in its vertical movements, and means to limit the downward movement of said sleeve member relative to further movement of said actuator and head to cause said tongs to open and release the ware.

24:. In a glassware forming machine, a waregripping mechanism comprising a body having a vertically disposed cylindrical fluid pressure receiving bore therein, a piston vertically movable within said bore, a head carried by the lower end of said piston, a sleeve member surrounding and movable with said head, a pair of ware-gripping bell crank lever tongs pivotally supported by said sleeve member and operatively connected to said head, resilient means acting upon the sleeve mem- 40 her to urge said tongs into closed ware-gripping 45 ported ware, guide means for guiding the sleeve in its vertical movements, and means associated with the guide means to limit the downward movement of said sleeve member relative to further movement of said actuator and head to cause said tongs to open and release the ware.

25. In a glassware forming machine, a waregripping mechanism comprising a body having a vertically disposed cylindrical fluid pressure receiving bore therein, a piston vertically movable within said bore, a head carried by the lower end of said piston, a sleeve member surrounding and movable with said head, a pair of ware-gripping bell crank lever tongs pivotally supported by said sleeve member and operatively connected to said head, resilient means acting upon, the sleeve member to urge said tongs into closed waregripping position, means for operating said piston vertically in said bore, the downward movement of said piston carrying with it the head and sleeve member to lower the gripping tongs and supported Ware, means to adjustably vary the position of the sleeve and head axially with reference to each other, and means to limit the downward movement of said sleeve member relative to further movement of said actuator and head to cause said tongs to open and release the ware.

26. In a glassware forming machine, a waregripping mechanism comprising a horizontally reciprocable body having a vertically disposed cylindrical bore therein, a piston vertically movable within said bore, a head carried by the lower end of said piston, a sleeve member surrounding and bodily movable with said head, a pair of ware-gripping bell crank lever tongs pivotally supported by said sleeve member and operatively connected to said head, resilient means acting upon the sleeve member to urge said tongs into closed ware-gripping position, means for operating said piston vertically in said bore, the downward movement of said piston carrying with it the head and sleeve member to lower the gripping tongs and supported ware, means to limit the downward movement of said sleeve member relative to further movement of said actuator and head to cause said tongs to open and release the ware, and means actuated at the opposite ends of the strokes of the reciprocable body for reversing the movement of said piston.

EDWARD MILLER.

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