CN210880726U - Injection molding machine mode locking device - Google Patents
Injection molding machine mode locking device Download PDFInfo
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- CN210880726U CN210880726U CN201921563444.0U CN201921563444U CN210880726U CN 210880726 U CN210880726 U CN 210880726U CN 201921563444 U CN201921563444 U CN 201921563444U CN 210880726 U CN210880726 U CN 210880726U
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Abstract
The utility model relates to a mould locking device of an injection molding machine, which comprises a fixed seat arranged above the injection molding machine, small-bore mould closing oil cylinders respectively vertically arranged at two sides of the upper end of the fixed seat, and mould locking mechanisms respectively arranged at two sides of the lower end of an upper template; each mold locking mechanism comprises a large-cylinder-diameter pressurizing oil cylinder arranged at the bottom of the upper template, a brake contracting rod, a brake mechanism and a brake contracting oil cylinder, wherein the upper end of the brake contracting rod is connected with the output end of the large-cylinder-diameter pressurizing oil cylinder, the lower end of the brake contracting rod vertically penetrates through the upper template, the brake contracting mechanism is arranged on the upper template and used for clamping or loosening the brake contracting rod, and the brake contracting oil cylinder drives the brake mechanism to act and has a buffering function; the utility model discloses a little cylinder diameter compound die hydro-cylinder drive cope match-plate pattern goes up and down, can improve compound die efficiency greatly, and big cylinder diameter pressure boost hydro-cylinder only need finely tune the upper and lower position of contracting brake pole, realizes the mode locking with the cooperation of band-type brake mechanism, and therefore working stroke is short, occupation space not to the band-type brake hydro-cylinder has buffer function, can not only improve the life of band-type brake mechanism, and can the noise reduction.
Description
Technical Field
The utility model relates to an injection molding machine mode locking device is refered in particular to in the field of moulding plastics.
Background
An injection molding machine is a commonly used plastic machine for producing plastic products; during production, a forming die is arranged on an injection molding machine, a plastic product is formed in the forming die, and a large forming pressure is needed during product forming, so a mold locking device is basically arranged on the injection molding machine and used for bearing the forming pressure of the forming die; for example, 201320863366.2 in the prior art discloses a liquid-filled mold locking mechanism of a plastic injection-blow molding machine, but the existing mold locking cylinder has a large stroke, occupies a large space, requires a large oil flow, and causes the machine to be equipped with a large-displacement hydraulic source (such as a hydraulic pump), which results in large energy consumption and high production cost; the booster cylinder with the contracting brake mechanism, as disclosed in the prior application patent No. 2019207373881, has the advantages that the speed of a piston rod in the contracting brake cylinder is uncontrollable in the movement process, so that the piston rod can collide with a cylinder body violently in the movement process, the service life of the contracting brake cylinder is shortened, noise can be generated, and the service life of the whole contracting brake mechanism can be influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an injection molding machine mode locking device in order to overcome the not enough of prior art.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a mold locking device of an injection molding machine comprises a fixed seat which is arranged above the injection molding machine and is fixedly connected through four guide posts, small-cylinder-diameter mold closing oil cylinders which are respectively vertically arranged on two sides of the upper end of the fixed seat and are used for driving an upper mold plate to lift along the four guide posts, and mold locking mechanisms which are respectively arranged on two sides of the lower end of the upper mold plate; each clamping mechanism comprises a large-cylinder-diameter pressurizing oil cylinder, a brake contracting rod, a brake mechanism and a brake contracting oil cylinder, wherein the large-cylinder-diameter pressurizing oil cylinder is arranged at the bottom of the upper template and positioned between the two guide pillars, the upper end of the brake contracting rod is connected with the output end of the large-cylinder-diameter pressurizing oil cylinder, the lower end of the brake contracting rod vertically penetrates through the upper template, the brake contracting mechanism is arranged on the upper template and used for clamping or loosening the brake contracting rod, and the brake cylinder drives; the band-type brake oil cylinder comprises a cylinder sleeve, a front cover and a rear cover which are respectively in threaded connection with two ends of the cylinder sleeve, a piston rod which is respectively positioned in cavities of the front cover, the cylinder sleeve and the rear cover and one end of which extends out of the front cover, a guide sleeve which is sleeved on the piston rod and is embedded into the front end of the front cover, and a large-hole oil port, a sealing ring and a small-hole oil port which are respectively arranged on the front cover and the rear cover and are sequentially arranged from outside to inside at intervals; and sealing structures are arranged at the joints of the front cover and the cylinder sleeve, the rear cover and the cylinder sleeve, the joints of the guide sleeve and the front cover, and the sealing structures between the piston rod and the cylinder sleeve and between the piston rod and the guide sleeve.
Preferably, the small-hole oil ports on the front cover and the rear cover are provided with throttle valves.
Preferably, the band-type brake mechanism comprises two slide rails which are arranged at the upper end of the upper template in parallel and are positioned at the front side and the rear side of the band-type brake rod, an outer brake block and an inner brake block, two ends of which are respectively arranged on the two slide rails in a sliding manner and are positioned at the left side and the right side of the band-type brake rod, a connecting plate which is vertically arranged at one side of the inner brake block, two connecting rods, one ends of which are arranged on the connecting plate and the other ends of which penetrate through the inner brake block to be connected with the outer brake block, and two stop rods, which are arranged at; the front cover of the band-type brake oil cylinder is fixed on the connecting plate, and the piston rod penetrates through the connecting plate to be connected with the inner brake block.
Preferably, the distance between the two stop levers is the sum of the widths of the outer brake block and the inner brake block and the stroke of the internal brake cylinder, and the distances from the two stop levers to the outer brake block and the inner brake block are the same.
Preferably, the large-cylinder-diameter pressurizing oil cylinder comprises a cavity arranged at the bottom of the fixed seat, a piston movably arranged in the cavity and capable of moving up and down, and an end cover arranged at the bottom of the fixed seat and used for sealing the cavity; the upper end of the brake contracting rod is connected with the piston; the top of the fixed seat and the end cover are respectively and correspondingly provided with an upper oil port and a lower oil port; and sealing structures are arranged between the piston and the cavity, between the band-type brake rod and the end cover and at the joints of the end cover and the cavity.
Preferably, the lower oil port is arranged on the surface of the end cover and is L-shaped.
Preferably, the two small-cylinder-diameter die-closing oil cylinders are respectively arranged at opposite angles of the fixed seat.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:
1. the utility model discloses a little cylinder diameter compound die hydro-cylinder drive cope match-plate pattern goes up and down, can improve the compound die efficiency greatly, and big cylinder diameter pressure boost hydro-cylinder only need finely tune the upper and lower position of contracting brake pole, realizes the mode locking with contracting brake mechanism cooperation, therefore the working stroke is short, does not occupy space, can effectively reduce the capacity of required hydraulic oil, has reduced use cost, can reduce the volume of oil tank again simultaneously, makes the cost that the customer changed hydraulic oil also reduce to some extent;
2. the middle-large diameter pressure-increasing oil cylinder of the utility model can readjust the position only when a new mould is replaced, thereby greatly reducing the number of times of movement and greatly prolonging the service life;
3. the utility model discloses well band-type brake hydro-cylinder compares with current ordinary hydro-cylinder, all increased sealing washer and aperture hydraulic fluid port after with the protecgulum, no matter the piston rod is stretching out or the withdrawal, when the sealing washer is not reachd to the tailpiece of the piston rod portion, be through the macropore hydraulic fluid port oil outflow, after reacing the sealing washer, change aperture hydraulic fluid port oil outflow into, the hydraulic fluid port becomes the aperture by the macropore, the piston rod will produce the damping effect, thereby play the cushioning effect, can effectively prevent that the piston rod from taking place violent collision with the cylinder body in the motion process, the life of band-type brake hydro-cylinder has been improved, and the noise reduction, can also improve the life of whole.
Drawings
The technical scheme of the utility model is further explained by combining the attached drawings as follows:
FIG. 1 is a schematic structural view of a mold locking device of an injection molding machine according to the present invention;
FIG. 2 is a sectional view of the mold clamping device of the injection molding machine of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 is a top view of the clamping state of the band-type brake mechanism of the present invention;
fig. 5 is a cross-sectional view of the retraction state of the middle brake cylinder of the present invention.
Wherein: 1. a guide post; 2. mounting a template; 3. a mold locking mechanism; 31. a large-bore pressurized oil cylinder; 311. a piston; 312. a cavity; 313. an end cap; 314. a lower oil port; 315. an oil feeding port; 32. a brake lever; 33. a band-type brake mechanism; 331. a connecting plate; 332. a connecting rod; 333. an inner gate block; 334. a slide rail; 335. an outer gate block; 336. a stop lever; 34. a band-type brake oil cylinder; 341. a rear cover; 342. a cylinder liner; 343. a front cover; 344. a large oil hole; 345. a guide sleeve; 346. a piston rod; 347. a seal ring; 348. a small-hole oil port; 4. a fixed seat; 5. the small cylinder diameter closes the die cylinder.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1-5 show a mold locking device of an injection molding machine according to the present invention, which comprises a fixed base 4 disposed above the injection molding machine and fixedly connected by four guide posts 1, small bore mold-closing cylinders 5 vertically disposed on both sides of the upper end of the fixed base 4 for driving an upper mold plate 2 to ascend and descend along the four guide posts 1, and mold locking mechanisms 3 disposed on both sides of the lower end of the upper mold plate 2; each clamping mechanism 3 comprises a large-bore pressurizing oil cylinder 31 arranged at the bottom of the upper template 2 and positioned between the two guide columns 1, a band-type brake rod 32 of which the upper end is connected with the output end of the large-bore pressurizing oil cylinder 31 and the lower end vertically penetrates through the upper template 2, a band-type brake mechanism 33 arranged on the upper template 2 and used for clamping or loosening the band-type brake rod 32, and a band-type brake oil cylinder 34 driving the band-type brake mechanism 33 to act; the band-type brake oil cylinder 34 comprises a cylinder sleeve 342, a front cover 343, a rear cover 341, a piston rod 346, a guide sleeve 345, a large oil hole 344, a sealing ring 347 and a small oil hole 348, wherein the front cover 343 and the rear cover 341 are respectively in threaded connection with two ends of the cylinder sleeve 342, the piston rod 346 is respectively positioned in cavities of the front cover 343, the cylinder sleeve 342 and the rear cover 341, one end of the piston rod extends out of the front cover 343, the guide sleeve 345 is sleeved on the piston rod 346 and is embedded into the front end of the front cover 343, and the large oil hole 344, the sealing ring; sealing structures are arranged at the joints of the front cover 343 and the rear cover 341 with the cylinder sleeve 342, the joints of the guide sleeve 345 with the front cover 343 and the spaces between the piston rod 346 and the cylinder sleeve 342 and the guide sleeve 345; when the mould locking device of the injection molding machine is operated, the mould locking device of the injection molding machine is firstly installed on the injection molding machine, then the injection mechanism is installed on the upper template 2, then the upper template 2 is driven to move downwards by the small-cylinder-diameter mould-closing oil cylinder 5 until the mould is closed, then the height of the mould is automatically recorded by the injection molding machine controller, because the height of each pair of moulds is different, the thread on the band-type brake mechanism 33 can not be accurately clamped into the thread on the band-type brake rod 32, the upper and lower positions of the band-type brake rod 32 need to be finely adjusted by the large-cylinder-diameter pressurizing oil cylinder 31, and finally the band-type brake rod 32 is clamped by the band-type brake oil cylinder 34 driven by the band-type brake mechanism 33, so as to realize mould locking, wherein the large-cylinder-diameter pressurizing oil cylinder 31 can only readjust the position when a new mould is replaced, the number of activity is greatly reduced, thereby the service life is greatly prolonged, therefore, the working stroke is short, the space is not occupied, the capacity of the required hydraulic oil can be effectively reduced, and the use cost is reduced; compared with the existing common oil cylinder, the band-type brake oil cylinder 34 has the advantages that the sealing rings 347 and the small hole oil ports 348 are additionally arranged on the front cover 343 and the rear cover 341, no matter the piston rods 346 extend out or retract, when the end portions of the piston rods 346 do not reach the sealing rings 347, oil is discharged through the large hole oil ports 344, after the piston rods 346 reach the sealing rings 347, oil is discharged from the small hole oil ports 348, the oil ports are changed from large holes to small holes, the piston rods 346 can generate a damping effect, a buffering effect is achieved, the piston rods 346 can be effectively prevented from being violently collided with a cylinder body in the movement process, the service life of the band-type brake oil cylinder 34 is prolonged, noise can be reduced, and meanwhile the service.
Furthermore, the small hole oil ports 348 on the front cover 343 and the rear cover 341 are provided with throttle valves, so that the buffer state of the piston rod 346 can be manually adjusted, and the operation is more convenient.
Further, the band-type brake mechanism 33 includes two slide rails 334 which are arranged in parallel at the upper end of the upper template 2 and are located at the front and rear sides of the band-type brake lever 32, an outer brake block 335 and an inner brake block 333 of which both ends are respectively slidably arranged on the two slide rails 334 and are located at the left and right sides of the band-type brake lever 32, a connecting plate 331 vertically arranged at one side of the inner brake block 333, two connecting rods 332 of which one ends are arranged on the connecting plate 331 and the other ends penetrate through the inner brake block 333 to be connected with the outer brake block 335, and two blocking rods 336 which are arranged in parallel at the upper end of the upper template 2 and are respectively located at the outer sides of the; a front cover 343 of the band-type brake oil cylinder 34 is fixed on the connecting plate 331, and a piston rod 346 passes through the connecting plate 331 to be connected with an inner brake block 333; during clamping, the internal brake block 333 is driven to slide rightwards along the slide rail 334 through the piston rod 346 by the brake cylinder 34 to be clamped with the left side of the brake lever 32, and the brake cylinder 34 is movably arranged, so that the brake cylinder 34 can drive the connecting plate 331 and the connecting rod 332 to move leftwards under the driving of a reaction force, and the external brake block 335 is driven to slide leftwards along the slide rail 334 to be clamped with the right side of the brake lever 32, so that the mode locking is realized.
Further, the distance between the two blocking rods 336 is the sum of the widths of the outer brake block 335 and the inner brake block 333 and the stroke of the internal brake cylinder 34, so that the moving range of the outer brake block 335 and the inner brake block 333 is just equal to the stroke of the internal brake cylinder 34, and the distances from the two blocking rods 336 to the outer brake block 335 and the inner brake block 333 are the same, so that the moving range of the outer brake block 335 and the inner brake block 333 is the same.
Further, the large-bore pressurizing oil cylinder 31 comprises a cavity 312 arranged at the bottom of the fixed seat 4, a piston 311 movably arranged in the cavity 312 and capable of moving up and down, and an end cover 313 arranged at the bottom of the fixed seat 4 and used for sealing the cavity 312; the upper end of the brake lever 32 is connected with the piston 311; an upper oil port 315 and a lower oil port 314 are correspondingly arranged on the top of the fixed seat 4 and the end cover 313 respectively; sealing structures are arranged between the piston 311 and the cavity 312, between the brake lever 32 and the end cover 313 and at the connection part of the end cover 313 and the cavity 312; through regarding fixing base 4 as the cylinder body, not only be convenient for install and make, and practiced thrift the space.
Further, the oil port 314 is arranged on the surface of the end cover 313 and is L-shaped, so that the upper template 2 can be effectively prevented from being damaged due to collision between the band-type brake mechanism 33 and an oil pipe of the oil port 314 during up-down movement.
Furthermore, two small-bore die-closing oil cylinders 5 are respectively arranged at opposite angles of the fixed seat 4, so that the small-bore die-closing oil cylinders can be staggered with the clamping mechanism 3, and the structure is more stable.
The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides an injection molding machine mode locking device which characterized in that: the mould clamping device comprises a fixed seat which is arranged above an injection molding machine and is fixedly connected through four guide posts, small-cylinder-diameter mould clamping oil cylinders which are respectively vertically arranged on two sides of the upper end of the fixed seat and are used for driving an upper mould plate to lift along the four guide posts, and mould locking mechanisms which are respectively arranged on two sides of the lower end of the upper mould plate; each clamping mechanism comprises a large-cylinder-diameter pressurizing oil cylinder, a brake contracting rod, a brake mechanism and a brake contracting oil cylinder, wherein the large-cylinder-diameter pressurizing oil cylinder is arranged at the bottom of the upper template and positioned between the two guide pillars, the upper end of the brake contracting rod is connected with the output end of the large-cylinder-diameter pressurizing oil cylinder, the lower end of the brake contracting rod vertically penetrates through the upper template, the brake contracting mechanism is arranged on the upper template and used for clamping or loosening the brake contracting rod, and the brake cylinder drives; the band-type brake oil cylinder comprises a cylinder sleeve, a front cover and a rear cover which are respectively in threaded connection with two ends of the cylinder sleeve, a piston rod which is respectively positioned in cavities of the front cover, the cylinder sleeve and the rear cover and one end of which extends out of the front cover, a guide sleeve which is sleeved on the piston rod and is embedded into the front end of the front cover, and a large-hole oil port, a sealing ring and a small-hole oil port which are respectively arranged on the front cover and the rear cover and are sequentially arranged from outside to inside at intervals; and sealing structures are arranged at the joints of the front cover and the cylinder sleeve, the rear cover and the cylinder sleeve, the joints of the guide sleeve and the front cover, and the sealing structures between the piston rod and the cylinder sleeve and between the piston rod and the guide sleeve.
2. The mold clamping apparatus for an injection molding machine according to claim 1, wherein: and the small-hole oil ports on the front cover and the rear cover are provided with throttle valves.
3. The mold clamping apparatus for an injection molding machine according to claim 1 or 2, wherein: the band-type brake mechanism comprises two sliding rails which are arranged at the upper end of the upper template in parallel and are positioned on the front side and the rear side of the band-type brake rod, an outer brake block and an inner brake block, two ends of which are respectively arranged on the two sliding rails in a sliding manner and are positioned on the left side and the right side of the band-type brake rod, a connecting plate which is vertically arranged on one side of the inner brake block, two connecting rods, one ends of which are arranged on the connecting plate and the other ends of which penetrate through the inner brake block to be connected with the outer brake block, and two stop rods, which are arranged; the front cover of the band-type brake oil cylinder is fixed on the connecting plate, and the piston rod penetrates through the connecting plate to be connected with the inner brake block.
4. The mold clamping apparatus for an injection molding machine according to claim 3, wherein: the distance between the two stop levers is the sum of the widths of the outer brake block and the inner brake block and the stroke of the band-type brake oil cylinder, and the distance between the two stop levers and the outer brake block and the distance between the two stop levers and the inner brake block are the same.
5. The mold clamping apparatus for an injection molding machine according to claim 4, wherein: the large-cylinder-diameter pressurizing oil cylinder comprises a cavity arranged at the bottom of the fixed seat, a piston movably arranged in the cavity and capable of moving up and down, and an end cover arranged at the bottom of the fixed seat and used for sealing the cavity; the upper end of the brake contracting rod is connected with the piston; the top of the fixed seat and the end cover are respectively and correspondingly provided with an upper oil port and a lower oil port; and sealing structures are arranged between the piston and the cavity, between the band-type brake rod and the end cover and at the joints of the end cover and the cavity.
6. The mold clamping apparatus for an injection molding machine according to claim 5, wherein: the lower oil port is arranged on the surface of the end cover and is L-shaped.
7. The mold clamping apparatus for an injection molding machine according to claim 6, wherein: and the two small-cylinder-diameter die-closing oil cylinders are respectively arranged at the opposite corners of the fixed seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921563444.0U CN210880726U (en) | 2019-09-19 | 2019-09-19 | Injection molding machine mode locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921563444.0U CN210880726U (en) | 2019-09-19 | 2019-09-19 | Injection molding machine mode locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210880726U true CN210880726U (en) | 2020-06-30 |
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ID=71312366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921563444.0U Active CN210880726U (en) | 2019-09-19 | 2019-09-19 | Injection molding machine mode locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210880726U (en) |
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2019
- 2019-09-19 CN CN201921563444.0U patent/CN210880726U/en active Active
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