Fixture for machining inner shape of glass mold

Abstract

A clamp for machining the inner shape of a glass mold comprises a base, a left clamping base, a right clamping base, a pair of sliding rails and a clamping mechanism, wherein the left clamping base and the right clamping base are fixed above the base, the sliding rails are installed on the base and extend towards the left clamping base and the right clamping base respectively, and the clamping mechanism is arranged on the base and can slide along the sliding rails. The left clamping block and the right clamping block are respectively arranged between the two sliding rails and can slide along the length direction of the sliding rails, the oil cylinder is fixed on the oil cylinder seat, the oil cylinder seat upwards forms a cylinder column sleeve, a lower clamping plate is fixed at the end part of the cylinder column sleeve, the oil cylinder upwards forms a cylinder column, and an upper clamping plate is fixed at the end part of the cylinder column. The upper clamping plate and the lower clamping plate are mutually matched and folded to push the left clamping block and the right clamping block towards the two sides respectively, and a long hole for the cylinder column sleeve to slide is formed in the position, corresponding to the cylinder column sleeve, of the base. The sliding adjustment mechanism has the advantages that under the condition that the lengths of the dies on the two sides have errors, the errors can be compensated through sliding adjustment, the clamping force of the stations on the two sides is kept consistent, and the use requirement for clamping of the clamp is lowered.

Description

Technical Field

[0001] This utility model belongs to the field of glass mold processing technology, and specifically relates to a fixture for processing the inner shape of a glass mold. Background Technology

[0002] Current glass molds are often processed using high-performance metal materials. In order to save costs and improve material utilization, additive and subtractive manufacturing techniques are often used. After the additive and subtractive processes, the mold needs to be precision machined to ensure dimensional accuracy. This process is short and requires frequent clamping, which cannot be met by existing single-station fixtures. Sometimes, it is also necessary to clamp glass molds of different lengths. Especially when machining the inner shape of the glass mold, there are requirements for the clamping direction and position. It is important to avoid the clamps from obstructing the machining of the inner shape and the plane on which the inner shape is located.

[0003] In existing technologies, such as the "clamp structure for processing the mating surface of a glass mold blank" disclosed in Chinese Utility Model Patent Application Publication No. CN103252670A, a base is provided, on which a base platform and a base cavity are formed. An actuation cylinder clearance hole is opened at the center of the base platform. A sliding guide seat is fixed at the position corresponding to the actuation cylinder clearance hole, and the sliding guide seat forms a sliding guide seat cavity. First and second support modules are fixed on the base platform. An actuation cylinder is fixed in the base cavity. First and second half-mold limiting and adjusting mechanisms are provided at both ends of the base platform. A bidirectional mold clamping mechanism is slidably engaged with the sliding guide seat and connected to the actuation cylinder column of the actuation cylinder. The first support module is located between the sliding guide seat and the first half-mold limiting and adjusting mechanism, and the second support module is located between the sliding guide seat and the second half-mold limiting and adjusting mechanism. Although this technical solution can clamp glass molds at multiple stations, it requires clamping two molds of the same length. If there is an error in the length of the two molds, the shorter mold will be difficult to fix effectively. However, as is well known, errors are inevitable in the processing industry, especially when the length accuracy requirements of the molds are not very high. Although the length error of the molds cannot be judged by the naked eye, this drawback will become apparent during the clamping process.

[0004] In view of the above, it is necessary to design a simple, low-cost fixture for machining the inner shape of glass molds that can use a single hydraulic cylinder for dual-station clamping and avoid ineffective clamping due to mold length errors. To this end, the applicant has made a beneficial design, and the technical solution described below arose from this background. Utility Model Content

[0005] The objective of this invention is to provide a fixture for machining the inner shape of glass molds, which helps to improve the clamping structure and overcome the problem of ineffective clamping caused by length errors between molds in the prior art, thereby reducing the requirements for the use of the fixture.

[0006] The present invention accomplishes its objective as follows: a fixture for internal processing of glass molds includes a base, a left clamp fixed at one end above the base, a right clamp fixed at the other end above the base, a pair of slide rails mounted opposite each other on the base and extending toward the left and right clamps respectively, and a clamping mechanism disposed on the base and slidable along the slide rails. The clamping mechanism comprises a hydraulic cylinder, a hydraulic cylinder seat, and a pair of left and right clamping blocks respectively disposed between the two slide rails and slidable along the length of the slide rails. The hydraulic cylinder is fixed on the hydraulic cylinder seat and located inside the base. The hydraulic cylinder seat has an upwardly extending cylinder sleeve that protrudes from the base. The end of the cylinder sleeve has a lower clamping plate. The hydraulic cylinder has an upwardly extending cylinder that passes sequentially through the hydraulic cylinder seat, the cylinder sleeve, and the lower clamping plate. An upper clamping plate is fixed to the end of the cylinder. The upper and lower clamping plates cooperate to push the corresponding left and right clamping blocks to their respective sides. The base has an elongated hole at the position corresponding to the cylinder sleeve for sliding of the cylinder sleeve.

[0007] In a specific embodiment of this utility model, the base has a downward-opening base cavity, a pair of support blocks are provided in the base cavity, and the elongated hole communicates with the base cavity.

[0008] In another specific embodiment of this utility model, the hydraulic cylinder and the hydraulic cylinder seat are disposed in the base cavity. When the hydraulic cylinder is in the clamping state, the cylinder column retracts, causing the upper clamping plate at the end of the cylinder column to move downward and, together with the lower clamping plate below, push the left clamping block and the right clamping block on both sides to clamp the mold. When the hydraulic cylinder is in the relaxed state, the cylinder column extends, causing the hydraulic cylinder, the hydraulic cylinder seat, and the lower clamping plate to move downward. At this time, the left clamping block and the right clamping block lose the clamping thrust from the upper clamping plate and the lower clamping plate, thereby releasing the clamping of the mold.

[0009] In another specific embodiment of this utility model, a set of left clamp fixing screw holes are formed on the left clamp, and the left clamp is fixed to the base screw through the left clamp fixing screw holes. A left clamp claw is fixed on the side of the left clamp facing the left clamping block.

[0010] In another specific embodiment of this utility model, a set of right clamp fixing screw holes are formed on the right clamp seat, and the right clamp seat is fixed to the base screw through the right clamp fixing screw holes. A right clamp seat claw is fixed on the side of the right clamp seat facing the right clamping block.

[0011] In another specific embodiment of this utility model, a set of slide rail fixing screw holes are spaced apart on the slide rail, and the slide rail is fixed to the base screw through the slide rail fixing screw holes. A slide groove is formed between the two slide rails, and the lower ends of the left clamping block and the right clamping block are respectively formed with a left clamping block slider and a right clamping block slider that can slide along the slide groove.

[0012] In a further specific embodiment of this utility model, the left clamping block has a pair of trapezoidal left clamping block inclined surfaces on the side facing the upper and lower clamping plates, and the right clamping block has a pair of trapezoidal right clamping block inclined surfaces on the side facing the upper and lower clamping plates. The two sides of the upper clamping plate respectively cooperate with the downward-sloping left clamping block inclined surface and the downward-sloping right clamping block inclined surface through an upper clamping plate inclined surface. The two sides of the lower clamping plate respectively cooperate with the upward-sloping left clamping block inclined surface and the upward-sloping right clamping block inclined surface through a lower clamping plate inclined surface.

[0013] In a more specific embodiment of this utility model, the cylinder rod end is fixed to the upper clamp plate by an upper clamp plate fixing nut.

[0014] In yet another specific embodiment of this utility model, a support seat for placing the mold is provided between the two slide rails at a position between the left clamp and the left clamping block and at a position between the right clamp and the right clamping block.

[0015] In yet another specific embodiment of this utility model, a width compensation block is fixed on each side of the oil cylinder, and the two sides of the oil cylinder abut against the inner walls of the two sides of the base cavity through the width compensation blocks.

[0016] The present invention has the following advantages after adopting the above structure: Since the clamping mechanism is used to clamp the mold by sliding adjustment and cooperating with the clamping seats on both sides, the error can be compensated by sliding adjustment when there is an error in the length of the mold on both sides, so that the clamping force of the two sides is consistent, effectively reducing the requirements for the use of the clamping fixture. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the usage state of this utility model.

[0019] In the diagram: 1. Base, 11. Elongated hole, 12. Base cavity, 13. Support block; 2. Left clamp, 21. Left clamp fixing screw hole, 22. Left clamp claw; 3. Right clamp, 31. Right clamp fixing screw hole, 32. Right clamp claw; 4. Clamping mechanism, 41. Hydraulic cylinder, 411. Cylinder column, 412. Upper clamping plate, 4121. Upper clamping plate inclined surface, 413. Upper clamping plate fixing nut, 41 4. Width compensation block; 42. Cylinder seat; 421. Cylinder column sleeve; 422. Lower clamping plate; 4221. Lower clamping plate inclined surface; 43. Left clamping block; 431. Left clamping block inclined surface; 432. Left clamping block slider; 44. Right clamping block; 441. Right clamping block inclined surface; 442. Right clamping block slider; 5. Slide rail; 51. Slide rail fixing screw hole; 52. Slide groove; 6. Support base; 7. Mold. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. However, the description of the embodiments is not a limitation on the technical solution. Any formal but not substantive changes made based on the concept of this utility model should be considered within the protection scope of this utility model.

[0021] In the following description, all directional or positional concepts involving up, down, left, right, front, and back are based on... Figure 1 The positions shown are for reference only and should not be construed as a particular limitation on the technical solutions provided by this utility model.

[0022] Please see Figure 1 , Figure 2 This utility model relates to a fixture for processing the inner shape of a glass mold, including a base 1, a left clamp 2 fixed above one end of the base 1, a right clamp 3 fixed above the other end of the base 1, a pair of slide rails 5 mounted opposite each other on the base 1 and extending toward the left clamp 2 and the right clamp 3 respectively, and a clamping mechanism 4 disposed on the base 1 and capable of sliding along the slide rails 5.

[0023] The technical innovation of this utility model is as follows: the aforementioned clamping mechanism 4 includes a hydraulic cylinder 41, a hydraulic cylinder seat 42, and a pair of left clamping blocks 43 and right clamping blocks 44 respectively disposed between two slide rails 5 and capable of sliding along the length of the slide rails 5. The aforementioned hydraulic cylinder 41 is fixed on the hydraulic cylinder seat 42 and located inside the base 1. The aforementioned hydraulic cylinder seat 42 is configured with a cylinder column sleeve 421 extending out of the base 1. The end of the aforementioned cylinder column sleeve 421 is configured with a lower clamping plate 422. The aforementioned hydraulic cylinder 41 is configured with a cylinder column 411 that passes through the hydraulic cylinder seat 42, the cylinder column sleeve 421 and the lower clamping plate 422 in sequence. The end of the aforementioned cylinder column 411 is fixed with an upper clamping plate 412. The aforementioned upper clamping plate 412 and lower clamping plate 422 cooperate with each other and push the corresponding left clamping block 43 and right clamping block 44 to both sides respectively. The aforementioned base 1 has an elongated hole 11 at the position corresponding to the cylinder column sleeve 421 for the cylinder column sleeve 421 to slide.

[0024] Please see Figure 1 The aforementioned base 1 has a downward-opening base cavity 12, and a pair of support blocks 13 are provided in the aforementioned base cavity 12. The aforementioned elongated hole 11 communicates with the aforementioned base cavity 12.

[0025] Furthermore, the aforementioned hydraulic cylinder 41 and hydraulic cylinder seat 42 are disposed within the base cavity 12. When the hydraulic cylinder 41 is in the clamping state, the aforementioned cylinder column 411 retracts, causing the upper clamping plate 412 at the end of the aforementioned cylinder column 411 to move downward and, together with the lower clamping plate 422 below, push the left clamping block 43 and the right clamping block 44 on both sides to clamp the mold 7. When the hydraulic cylinder 41 is in the relaxed state, the aforementioned cylinder column 411 extends, causing the hydraulic cylinder 41, the hydraulic cylinder seat 42, and the lower clamping plate 422 to move downward. At this time, the aforementioned left clamping block 43 and the right clamping block 44 lose the clamping thrust from the upper clamping plate 412 and the lower clamping plate 422, thereby releasing the clamping force on the mold 7. The aforementioned upper clamping plate 412 is fixed at the end of the aforementioned cylinder column 411 by an upper clamping plate fixing nut 413. The aforementioned left clamping block 43 has a pair of trapezoidal left clamping block inclined surfaces 431 on the side facing the upper clamping plate 412 and the lower clamping plate 422. The aforementioned right clamping block 44 has a pair of trapezoidal right clamping block inclined surfaces 441 on the side facing the upper clamping plate 412 and the lower clamping plate 422. The two sides of the aforementioned upper clamping plate 412 respectively cooperate with the downward-sloping left clamping block inclined surface 431 and the downward-sloping right clamping block inclined surface 441 through an upper clamping plate inclined surface 4121. The two sides of the aforementioned lower clamping plate 422 respectively cooperate with the upward-sloping left clamping block inclined surface 431 and the upward-sloping right clamping block inclined surface 441 through a lower clamping plate inclined surface 4221.

[0026] In this embodiment, the aforementioned left clamp 2 has a set of left clamp fixing screw holes 21, and the aforementioned left clamp 2 is fixed to the base 1 by screws through the left clamp fixing screw holes 21. The aforementioned left clamp 2 has a left clamp claw 22 fixed by screws on the side facing the left clamping block 43. The aforementioned right clamp 3 has a set of right clamp fixing screw holes 31, and the aforementioned right clamp 3 is fixed to the base 1 by screws through the right clamp fixing screw holes 31. The aforementioned right clamp 3 has a right clamp claw 32 fixed by screws on the side facing the right clamping block 44.

[0027] Furthermore, a set of slide rail fixing screw holes 51 are spaced apart on the aforementioned slide rail 5. The aforementioned slide rail 5 is fixed to the base 1 by screws through the slide rail fixing screw holes 51. A slide groove 52 is formed between the two aforementioned slide rails 5. The lower ends of the aforementioned left clamping block 43 and right clamping block 44 are respectively formed with a left clamping block slider 432 and a right clamping block slider 442 that can slide along the slide groove 52.

[0028] A support base 6 for placing the mold 7 is provided between the two aforementioned slide rails 5 and at the positions between the left clamping seat 2 and the left clamping block 43 and between the right clamping seat 3 and the right clamping block 44.

[0029] A width compensation block 414 is fixed on each side of the aforementioned hydraulic cylinder 41, and the two sides of the aforementioned hydraulic cylinder 41 abut against the inner walls of the two sides of the base cavity 12 through the width compensation block 414.

[0030] Please continue reading. Figure 1 and combined Figure 2 Two molds 7 are placed at the positions between the left clamping seat 2 and the left clamping block 43, and between the right clamping seat 3 and the right clamping block 44, respectively. The semi-circular surfaces of the molds 7 rest on the support seats 6, with the inner mold and the surface containing the inner mold facing upwards. The hydraulic cylinder 41 is driven to retract the cylinder column 411, causing the upper clamping plate 412 to move downwards. At the same time, the hydraulic cylinder 41, the cylinder seat 42, the cylinder column sleeve 421, and the lower clamping plate 422 move upwards under the reaction force of the retraction of the cylinder column 411. The upper clamping plate 412 and the lower clamping plate 422 close together, and the inclined surfaces of the upper and lower clamping plates 4121 and 4122 close together. During the closing process, the left clamping block 43 is pushed to slide towards the left clamping seat 2 by the left clamping block inclined surface 431. Meanwhile, the aforementioned upper clamping plate inclined surface 4121 and lower clamping plate inclined surface 4221 push the right clamping block 44 towards the right clamping seat 3 by the right clamping block inclined surface 441 during the closing process. When there is a length error between the two molds 7, the aforementioned oil cylinder 41, oil cylinder seat 42, left clamping block 43 and right clamping block 44 move towards the shorter mold 7 side through the elongated hole 11 and make adjustments. This can ignore the impact of the inability to effectively clamp due to the length error between the molds, and realize the function of dual-station clamping through a single oil cylinder.

[0031] In summary, the technical solution provided by this utility model makes up for the shortcomings of the prior art, successfully completes the invention task, and faithfully realizes the technical effects described by the applicant in the above technical effect column.

Claims

1. A fixture for processing the inner shape of a glass mold, comprising a base (1), a left clamp (2) fixed above one end of the base (1), a right clamp (3) fixed above the other end of the base (1), a pair of slide rails (5) mounted opposite each other on the base (1) and extending toward the left clamp (2) and the right clamp (3) respectively, and a clamping mechanism (4) disposed on the base (1) and slidable along the slide rails (5), characterized in that: The clamping mechanism (4) includes a hydraulic cylinder (41), a hydraulic cylinder seat (42), and a pair of left clamping blocks (43) and right clamping blocks (44) respectively disposed between two slide rails (5) and capable of sliding along the length of the slide rails (5). The hydraulic cylinder (41) is fixed on the hydraulic cylinder seat (42) and located inside the base (1). The hydraulic cylinder seat (42) has an upwardly formed cylinder sleeve (421) that extends out of the base (1). The end of the cylinder sleeve (421) has a lower clamping plate (422). The cylinder (411) is formed by passing through the cylinder seat (42), cylinder sleeve (421) and lower clamping plate (422) in sequence. An upper clamping plate (412) is fixed at the end of the cylinder (411). The upper clamping plate (412) and the lower clamping plate (422) cooperate with each other to push the corresponding left clamping block (43) and right clamping block (44) to the sides respectively. The base (1) has an elongated hole (11) at the position corresponding to the cylinder sleeve (421) for the cylinder sleeve (421) to slide.

2. The fixture for machining the inner shape of a glass mold according to claim 1, characterized in that: The base (1) has a downward-opening base cavity (12), and a pair of support blocks (13) are provided in the base cavity (12). The elongated hole (11) communicates with the base cavity (12).

3. The fixture for machining the inner shape of a glass mold according to claim 2, characterized in that: The hydraulic cylinder (41) and the hydraulic cylinder seat (42) are located in the base cavity (12). When the hydraulic cylinder (41) is in the clamping state, the cylinder column (411) retracts, causing the upper clamping plate (412) at the end of the cylinder column (411) to move downward and cooperate with the lower clamping plate (422) below to push the left clamping block (43) and the right clamping block (44) on both sides to clamp the mold (7). When the hydraulic cylinder (41) is in the relaxed state, the cylinder column (411) extends, causing the hydraulic cylinder (41), the hydraulic cylinder seat (42), and the lower clamping plate (422) to move downward. At this time, the left clamping block (43) and the right clamping block (44) lose the clamping thrust from the upper clamping plate (412) and the lower clamping plate (422), thereby releasing the clamping of the mold (7).

4. The fixture for machining the inner shape of a glass mold according to claim 1, characterized in that: The left clamp (2) has a set of left clamp fixing screw holes (21), and the left clamp (2) is fixed to the base (1) by screws through the left clamp fixing screw holes (21). The left clamp (2) has a left clamp claw (22) fixed on the side facing the left clamping block (43).

5. A fixture for machining the inner shape of a glass mold according to claim 1, characterized in that: The right clamp (3) has a set of right clamp fixing screw holes (31), and the right clamp (3) is fixed to the base (1) by screws through the right clamp fixing screw holes (31). The right clamp (3) has a right clamp claw (32) fixed on the side facing the right clamping block (44).

6. The fixture for machining the inner shape of a glass mold according to claim 1, characterized in that: A set of slide rail fixing screw holes (51) are spaced apart on the slide rail (5). The slide rail (5) is fixed to the base (1) by screws through the slide rail fixing screw holes (51). A slide groove (52) is formed between the two slide rails (5). The lower ends of the left clamping block (43) and the right clamping block (44) are respectively provided with a left clamping block slider (432) and a right clamping block slider (442) that can slide along the slide groove (52).

7. A fixture for machining the inner shape of a glass mold according to claim 1, characterized in that: The left clamping block (43) has a pair of trapezoidal left clamping block inclined surfaces (431) on the side facing the upper clamping plate (412) and the lower clamping plate (422). The right clamping block (44) has a pair of trapezoidal right clamping block inclined surfaces (441) on the side facing the upper clamping plate (412) and the lower clamping plate (422). The upper clamping plate (412) is connected to the downward-sloping left clamping block inclined surface (431) and the downward-sloping right clamping block inclined surface (441) on both sides through an upper clamping plate inclined surface (4121). The lower clamping plate (422) is connected to the upward-sloping left clamping block inclined surface (431) and the upward-sloping right clamping block inclined surface (441) on both sides through a lower clamping plate inclined surface (4221).

8. A fixture for machining the inner shape of a glass mold according to claim 1, characterized in that: The cylinder rod (411) end is fixed to the upper clamp plate (412) by an upper clamp plate fixing nut (413).

9. A fixture for machining the inner shape of a glass mold according to claim 3, characterized in that: A support base (6) for placing a mold (7) is provided between the two slide rails (5) and at the position between the left clamp (2) and the left clamping block (43) and at the position between the right clamp (3) and the right clamping block (44).

10. A fixture for machining the inner shape of a glass mold according to claim 1, characterized in that: A width compensation block (414) is fixed on each side of the oil cylinder (41), and the two sides of the oil cylinder (41) abut against the inner walls of the two sides of the base cavity (12) through the width compensation block (414).

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