Precision machining device for producing rack

Abstract

The invention relates to a precision machining device for producing a rack. Comprising a base, a supporting frame used for supporting a rack, a positioning mechanism used for fixing the rack and a first driving device used for driving the positioning mechanism to slide. The support frame is arranged on the base; a sliding groove is formed in the base; two groups of first driving devices which are symmetrically placed are arranged in the sliding groove; the driving ends of the two first driving devices are in transmission connection with positioning mechanisms; the two sets of positioning mechanisms slide in the sliding grooves. And a plurality of groups of rectangular openings which are arranged in a linear array are formed in the support frame. The technical problems that in the prior art, a machining device usually adopts a fixed clamp, so that the clamping range is limited, meanwhile, a rigid clamping face easily causes deformation or surface indentation of a thin-wall rack, and the reworking cost is increased are solved.

Description

Technical Field

[0001] The invention relates to the field of injection molding machine processing devices, in particular to a precision processing device for producing a frame. Background Art

[0002] Injection molding machine is also called injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal and all-electric types.

[0003] The frame of the injection molding machine is the core bearing structure of the equipment. Its welding and finishing accuracy directly affect the operating stability and life of the injection molding machine. The traditional processing device uses a fixed fixture, which has significant defects: first, the clamping range is limited and cannot adapt to frames of different lengths of 1-5 meters. The replacement time takes up to 40 minutes; second, there are clamping blind areas in the internal cavity and inclined surface of the frame. The stress release during welding causes micro-displacement, and the weld porosity defect rate exceeds 8%; third, the height adjustment depends on the stacking of manual pads, which has low accuracy (±2mm), and the processing vibration causes the hole coaxiality deviation to be greater than 0.5mm; fourth, the rigid clamping surface is easy to cause deformation of thin-walled frames or surface indentations, increasing the rework cost. The existing debris cleaning system is separated from the processing module, and the accumulation of metal debris accelerates the wear of the guide rails. Summary of the invention

[0004] The embodiment of the present application provides a precision processing device for producing a frame, thereby solving the technical problem that in the prior art solution, the processing device usually adopts a fixed clamp, which limits the clamping range and the rigid clamping surface easily causes deformation of the thin-walled frame or surface indentation, thereby increasing the rework cost.

[0005] The technical solution adopted in the embodiment of the present application is as follows:

[0006] A precision machining device for producing a rack, comprising a base, a support frame for supporting the rack, a positioning mechanism for fixing the rack, and a first driving device for driving the positioning mechanism to slide; the support frame is arranged on the base; the base is provided with a slide groove; two groups of the first driving devices symmetrically arranged are arranged in the slide groove; the driving ends of the two groups of the first driving devices are both transmission-connected with the positioning mechanism; the two groups of the positioning mechanisms slide in the slide groove; the support frame is provided with a plurality of groups of rectangular openings arranged in a linear array;

[0007] The positioning mechanism includes a slider, a positioning piece for abutting against a frame, and a sliding device for driving the positioning piece to move; the slider slides in a sliding groove opened on both sides of the base, and the slider is arranged on the driving end of the first driving device; the sliding device is arranged on the extension of the slider; two groups of symmetrically placed positioning pieces are arranged on the sliding end of the sliding device.

[0008] A further technical solution is as follows: The sliding device includes a moving block, a first lead screw for driving the moving block to slide, a second driving device installed at one end of the outer extension of the slider, and a first bearing seat installed at the other end of the outer extension of the slider; a limiting groove is provided on the outer extension of the slider; two groups of symmetrically arranged moving blocks are threadedly connected to the first lead screw; both groups of moving blocks slide on the limiting groove; one end of the first lead screw is arranged on the output shaft of the second driving device; the other end of the first lead screw is arranged on the inner ring of the bearing in the first bearing seat; the positioning members are arranged on both groups of moving blocks.

[0009] A further technical solution is as follows: The positioning member includes a support block, a connecting plate arranged on the support block, a third driving device arranged on the top of the moving block, and an abutting member for abutting against the machine frame; the support block is arranged on the driving end of the third driving device; two groups of the abutting members symmetrically arranged with respect to the support block are threadedly connected to the connecting plate.

[0010] A further technical solution is as follows: The abutting member includes a support plate, a baffle for abutting against the machine frame, a threaded rod threadedly connected to the connecting plate, and a buffer member for buffering the baffle; the support plate is arranged at one end of the threaded rod; the buffer member is arranged between the support plate and the baffle; a threaded handle is arranged at the other end of the threaded rod.

[0011] A further technical solution is as follows: The precision machining device further includes a debris cleaning device; the debris cleaning device is located between the base and the support frame; the debris cleaning device includes a brush for cleaning debris on the surface of the base, a guide block for driving the brush to move, a second lead screw for driving the guide block to move, limiting rails arranged at both ends of the top of the base, a fourth driving device for driving the second lead screw to rotate, and a second bearing seat for supporting the second lead screw; the brush is arranged at the bottom end of the guide block and the brush is in contact with the surface of the base; the guide block is threadedly connected to the second lead screw; the guide block slides on the two limiting rails; one end of the second lead screw is arranged on the output shaft of the fourth driving device, and the other end of the second lead screw is arranged on the inner ring of the bearing in the second bearing seat.

[0012] A further technical solution is as follows: Both the first driving device and the third driving device are cylinders.

[0013] A further technical solution is as follows: Both the second driving device and the fourth driving device are servo motors.

[0014] A further technical solution is as follows: The buffer member includes a spring, a telescopic rod, and a damping pad; the spring is arranged around the telescopic rod; the telescopic rod is arranged between the support plate and the baffle; a damping pad is arranged between the telescopic end of the telescopic rod and the connection of the baffle.

[0015] A further technical solution is as follows: Rubber cushion blocks are arranged on the baffle.

[0016] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0017] 1. Due to the provision of the base, the support frame, the positioning mechanism, the first driving device, and the debris cleaning device, the slider of the positioning mechanism is controlled to move in coordination with the chute of the base by the first driving device, realizing the adaptive adjustment of the length of the injection molding machine frame and adapting to the processing requirements of frames of different specifications; the first lead screw of the sliding device drives two groups of moving blocks to slide synchronously and reversely along the limiting groove, accurately controlling the lateral clamping distance of the positioning member, and combining with the vertical lifting of the support block driven by the third driving device to form a three-dimensional positioning system to ensure the stability of multi-angle processing of the frame. The position of the baffle is manually fine-tuned by the threaded rod of the abutting member, and the spring and the telescopic rod of the buffer member are used to absorb the clamping impact force. The rubber cushion block on the surface of the baffle contacts the frame flexibly, avoiding surface damage caused by rigid clamping. The brush of the debris cleaning device automatically reciprocates and sweeps along the limiting rail through the second lead screw, keeping the surface of the base clean and reducing the influence of debris accumulation on the processing accuracy. The overall structure adopts a modular design, and key components such as the buffer member and the brush 1 support quick replacement, significantly improving the equipment maintenance efficiency and service life. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of a precision processing device for producing a frame in an embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of a partial structure for showing the inside of the base in an embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of a partial structure for showing the positioning mechanism in an embodiment of the present invention.

[0021] Figure 4 It is a schematic diagram of a partial structure for showing the positioning member in an embodiment of the present invention.

[0022] Figure 5 It is a schematic diagram of a partial structure for showing the abutting member in an embodiment of the present invention.

[0023] Figure 6 It is a schematic diagram of a partial structure for showing the debris cleaning device in an embodiment of the present invention.

[0024] In the figure: 1. base; 11. slide groove; 2. support frame; 21. rectangular opening; 3. positioning mechanism; 31. slider; 311. limit groove; 32. positioning member; 321. support block; 322. connecting plate; 323. third driving device; 324. abutment member; 3241. support plate; 3242. baffle; 3243. threaded rod; 3244. buffer member; 33. sliding device; 331. moving block; 332. first screw rod; 333. second driving device; 334. second bearing seat; 4. first driving device; 5. debris cleaning device; 51. brush; 52. guide block; 53. second screw rod; 54. limit rail; 55. fourth driving device; 56. second bearing seat. DETAILED DESCRIPTION

[0025] The embodiment of the present application provides a precision processing device for producing a frame, thereby solving the technical problem that in the prior art solution, the processing device usually adopts a fixed clamp, which limits the clamping range and the rigid clamping surface easily causes deformation of the thin-walled frame or surface indentation, thereby increasing the rework cost.

[0026] The technical solution in the embodiment of the present application is to solve the above problems, and the overall idea is as follows:

[0027] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] A precision machining device for producing a frame, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, it includes a base 1, a support frame 2 for supporting a frame, a positioning mechanism 3 for fixing the frame, and a first driving device 4 for driving the positioning mechanism 3 to slide; the support frame 2 is arranged on the base 1; the base 1 is provided with a slide slot 11; two groups of first driving devices 4 are arranged in a symmetrical manner in the slide slot 11; the driving ends of the two groups of first driving devices 4 are both connected to the positioning mechanism 3 by transmission; the two groups of positioning mechanisms 3 slide in the slide slot 11; a plurality of groups of rectangular openings 21 arranged in a linear array are provided on the support frame 2;

[0029] The positioning mechanism 3 includes a slider 31, a positioning member 32 for abutting against the frame, and a sliding device 33 for driving the positioning member 32 to move; the slider 31 slides in the slide grooves 11 opened on both sides of the base 1, and the slider 31 is arranged on the driving end of the first driving device 4; the sliding device 33 is arranged on the extension of the slider 31; two groups of symmetrically placed positioning members 32 are arranged on the sliding end of the sliding device 33.

[0030] The sliding device 33 includes a moving block 331, a first lead screw 332 for driving the sliding of the moving block 331, a second driving device 333 installed at one end of the outer extension of the slider 31, and a first bearing seat 334 installed at the other end of the outer extension of the slider 31; a limiting groove 311 is provided on the outer extension of the slider 31; two groups of symmetrically arranged moving blocks 331 are threadedly connected to the first lead screw 332; both groups of moving blocks 331 slide on the limiting groove 311; one end of the first lead screw 332 is arranged on the output shaft of the second driving device 333; the other end of the first lead screw 332 is arranged on the inner ring of the bearing in the first bearing seat 334; positioning members 32 are arranged on both groups of moving blocks 331.

[0031] The positioning member 32 includes a support block 321, a connecting plate 322 arranged on the support block 321, a third driving device 323 arranged on the top of the moving block 331, and a abutting member 324 for abutting against the frame; the support block 321 is arranged on the driving end of the third driving device 323; two groups of abutting members 324 symmetrically arranged with respect to the support block 321 are threadedly connected to the connecting plate 322.

[0032] The abutting member 324 includes a support plate 3241, a baffle plate 3242 for abutting against the frame, a threaded rod 3243 threadedly connected to the connecting plate 322, and a buffer member 3244 for buffering the baffle plate 3242; the support plate 3241 is arranged at one end of the threaded rod 3243; the buffer member 3244 is arranged between the support plate 3241 and the baffle plate 3242; a threaded handle is arranged at the other end of the threaded rod 3243.

[0033] The precision machining device further includes a debris cleaning device 5; the debris cleaning device 5 is located between the base 1 and the support frame 2; the debris cleaning device 5 includes a brush 51 for cleaning the debris on the surface of the base 1, a guide block 52 for driving the movement of the brush 51, a second lead screw 53 for driving the movement of the guide block 52, limiting rails 54 arranged at both ends of the top of the base 1, a fourth driving device 55 for driving the rotation of the second lead screw 53, and a second bearing seat 56 for supporting the second lead screw 53; the brush 51 is arranged at the bottom end of the guide block 52, and the brush 51 is attached to the surface of the base 1; the guide block 52 is threadedly connected to the second lead screw 53; the guide block 52 slides on the two groups of limiting rails 54; one end of the second lead screw 53 is arranged on the output shaft of the fourth driving device 55, and the other end of the second lead screw 53 is arranged on the inner ring of the bearing in the second bearing seat 56.

[0034] Both the first driving device 4 and the third driving device 323 are cylinders.

[0035] Both the second driving device 333 and the fourth driving device 55 are servo motors.

[0036] The buffer member 3244 includes a spring, a telescopic rod, and a damping pad; the spring is arranged around the telescopic rod; the telescopic rod is arranged between the support plate 3241 and the baffle 3242; a damping pad is arranged between the connection part of the telescopic end of the telescopic rod and the baffle 3242.

[0037] A rubber cushion block is arranged on the baffle 3242.

[0038] The base 1 is provided with a sliding groove 11, and two groups of first driving devices 4 (cylinders) drive the slider 31 of the positioning mechanism 3 to slide along the sliding groove 11 to adapt to different lengths of the frame. The sliding device 33 of the positioning mechanism 3 includes a first lead screw 332 driven by a servo motor 333, which drives two groups of moving blocks 331 to move synchronously and reversely along the limiting groove 311 on the outer extension of the slider 31; the positioning member 32 on the moving block 331 is driven by a third driving device 323 (cylinder) to lift the support block 321, and the abutting members 324 on both sides of the connecting plate 322 adjust the position of the baffle 3242 by manually rotating the threaded handle of the threaded rod 3243. The buffer member 3244 (spring, telescopic rod, damping pad) and the rubber cushion block 32421 on the baffle 3242 cooperate to achieve flexible clamping. The rectangular opening 21 of the support frame 2 is convenient for welding at multiple angles. The servo motor 55 of the debris cleaning device 5 drives the second lead screw 53, which drives the guide block 52 to move along the limiting rail 54, and the brush 51 automatically cleans the debris on the surface of the base 1.

[0039] Operation process:

[0040] Frame placement: Place the frame on the support frame 2 and align it with the processing area of the rectangular opening 21;

[0041] Length adjustment: Start the first driving device 4 to drive the slider 31 to move along the sliding groove 11 to both ends of the frame;

[0042] Lateral clamping: The servo motor 333 drives the first lead screw 332 to make the moving block 331 drive the abutting member 324 to move towards the side wall of the frame;

[0043] Manual fine-tuning: Rotate the threaded handle of the threaded rod 3243 to push the support plate 3241 to make the baffle 3242 fit the frame. The spring 32441 of the buffer member 3244 compresses to absorb the impact, and the rubber cushion block 32421 increases the friction force;

[0044] Height positioning: The third driving device 323 drives the support block 321 to lift to the processing height;

[0045] Processing execution: The debris generated during processing falls onto the surface of the base 1 through the rectangular opening 21, and the debris is automatically cleaned by the brush 51;

[0046] Reset and cleaning: After processing, operate the driving device in reverse, and the debris cleaning device 5 cleans the base 1.

[0047] Beneficial effects:

[0048] Due to the provision of the base 1, the support frame 2, the positioning mechanism 3, the first driving device 4 and the debris cleaning device 5, the slider 31 of the positioning mechanism 3 is controlled to move in cooperation with the first driving device 4 through the chute 11 of the base 1, so as to realize the self-adaptive adjustment of the length of the injection molding machine frame and adapt to the processing requirements of frames of different specifications; the first lead screw 332 of the sliding device 33 drives two groups of moving blocks 331 to slide synchronously and reversely along the limiting groove 311, accurately controlling the lateral clamping distance of the positioning member 32. Combining with the vertical lifting of the support block 321 driven by the third driving device 323, a three-dimensional positioning system is formed to ensure the stability of multi-angle processing of the frame. The threaded rod 3243 of the abutting member 324 manually fine-tunes the position of the baffle 3242, and the spring and the telescopic rod of the buffer member 3244 cooperate to absorb the clamping impact force. The rubber cushion block on the surface of the baffle 3242 contacts the frame flexibly, avoiding surface damage caused by rigid clamping. The brush 51 of the debris cleaning device 5 automatically reciprocates and sweeps along the limiting rail 54 through the second lead screw 53, keeping the surface of the base 1 clean and reducing the influence of debris accumulation on the processing accuracy. The overall structure adopts a modular design, and key components such as the buffer member 3244 and the brush 51 support quick replacement, significantly improving the equipment maintenance efficiency and service life.

[0049] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0050] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A precision machining device for producing a frame, characterized in that: The invention comprises a base (1), a support frame (2) for supporting a frame, a positioning mechanism (3) for fixing the frame, and a first driving device (4) for driving the positioning mechanism (3) to slide; the support frame (2) is arranged on the base (1); the base (1) is provided with a slide groove (11); two groups of the first driving devices (4) are arranged in a symmetrical manner in the slide groove (11); the driving ends of the two groups of the first driving devices (4) are both connected to the positioning mechanism (3) in a transmission manner; the two groups of the positioning mechanisms (3) slide in the slide groove (11); the support frame (2) is provided with a plurality of groups of rectangular openings (21) arranged in a linear array; The positioning mechanism (3) comprises a slider (31), a positioning member (32) for abutting against a frame, and a sliding device (33) for driving the positioning member (32) to move; the slider (31) slides in a slide groove (11) provided on both sides of the base (1), and the slider (31) is arranged on a driving end of the first driving device (4); the sliding device (33) is arranged on the extension of the slider (31); and two groups of the positioning members (32) are symmetrically arranged on the sliding end of the sliding device (33).

2. A precision machining device for producing a frame as claimed in claim 1, characterized in that: The sliding device (33) comprises a moving block (331), a first screw rod (332) for driving the moving block (331) to slide, a second driving device (333) installed at one end of the extension of the slider (31), and a first bearing seat (334) installed at the other end of the extension of the slider (31); a limiting groove (311) is provided on the extension of the slider (31); two groups of symmetrically placed moving blocks (331) are threadedly connected to the first screw rod (332); both groups of moving blocks (331) slide on the limiting groove (311); one end of the first screw rod (332) is arranged on the output shaft of the second driving device (333); the other end of the first screw rod (332) is arranged on the inner ring of the bearing in the first bearing seat (334); and both groups of moving blocks (331) are provided with the positioning member (32).

3. A precision machining device for producing a frame as claimed in claim 2, characterized in that: The positioning member (32) comprises a support block (321), a connecting plate (322) arranged on the support block (321), a third driving device (323) arranged on the top of the moving block (331), and a supporting member (324) for supporting against a frame; the support block (321) is arranged on a driving end of the third driving device (323); and two groups of the supporting members (324) are threadedly connected to the connecting plate (322) and are symmetrically arranged with respect to the support block (321).

4. A precision machining device for producing a frame as claimed in claim 3, characterized in that: The abutting member (324) comprises a supporting plate (3241), a baffle (3242) for abutting against a frame, a threaded rod (3243) threadedly connected to the connecting plate (322), and a buffer member (3244) for buffering the baffle (3242); the supporting plate (3241) is arranged at one end of the threaded rod (3243); the buffer member (3244) is arranged between the supporting plate (3241) and the baffle (3242); and a threaded handle is arranged at the other end of the threaded rod (3243).

5. A precision machining device for producing a frame as claimed in claim 1, characterized in that: The precision machining device further comprises a debris cleaning device (5); the debris cleaning device (5) is located between the base (1) and the support frame (2); the debris cleaning device (5) comprises a brush (51) for cleaning debris on the surface of the base (1), a guide block (52) for driving the brush (51) to move, a second screw rod (53) for driving the guide block (52) to move, limit rails (54) arranged at both ends of the top of the base (1), a fourth driving device (55) for driving the second screw rod (53) to rotate, and a fourth driving device (55) for driving the second screw rod (53) to rotate. A second bearing seat (56) supports the second screw rod (53); the brush (51) is arranged at the bottom end of the guide block (52), and the brush (51) is in contact with the surface of the base (1); the guide block (52) is threadedly connected to the second screw rod (53); the guide block (52) slides on two sets of limit rails (54); one end of the second screw rod (53) is arranged on the output shaft of the fourth drive device (55), and the other end of the second screw rod (53) is arranged on the inner ring of the bearing in the second bearing seat (56).

6. A precision machining device for producing a frame as claimed in claim 3, characterized in that: The first driving device (4) and the third driving device (323) are both cylinders.

7. A precision machining device for producing a frame as claimed in claim 5, characterized in that: The second driving device (333) and the fourth driving device (55) are both servo motors.

8. A precision machining device for producing a frame as claimed in claim 4, characterized in that: The buffer member (3244) comprises a spring, a telescopic rod and a damping pad; the spring is arranged around the telescopic rod; the telescopic rod is arranged between the support plate (3241) and the baffle (3242); and a damping pad is arranged between the telescopic end of the telescopic rod and the connection between the baffle (3242).

9. A precision machining device for producing a frame as claimed in claim 4, characterized in that: A rubber pad is provided on the baffle (3242).

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