Detection device for injection molded part

Abstract

The utility model belongs to the field of injection molding, in particular relates to a detection device for an injection molding part, and provides the following scheme aiming at the problems of unstable clamping, positioning deviation and the like, incapability of detecting tiny deformation or smoothness in an aperture and larger detection limitation when a special-shaped part or a curved-surface part is used in the prior art. Comprising a supporting table, two sliding tables are installed on the top of the supporting table in a sliding mode, a first arc-shaped block, a second arc-shaped block and a third arc-shaped block are sequentially arranged in each sliding table, the first arc-shaped blocks can slide along arc-shaped rails of the sliding tables, and the second arc-shaped blocks can slide along arc-shaped rails of the first arc-shaped blocks. The two sliding tables get close to each other, injection molding parts in different forms can be clamped, and meanwhile through elastic receding of the two springs, when the two balls roll in the hole diameter, concave-convex parts of the hole wall can be captured under the cooperation of descending and rotating.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding technical field especially relates to a detection device for injection molding part. BACKGROUND

[0002] Injection molding part has wide application in electronic appliances, automobile traffic, medical instruments, household electrical appliances, consumer goods, aerospace, building, packaging and sports outdoor fields, and the through hole on the automobile injection molding part is processed by the punching device after injection molding, so in order to guarantee that the automobile injection molding part can be normally used, the hole diameter inside injection molding part needs to be detected.

[0003] The existing detection device for injection molding part still has some deficiencies in actual use process:

[0004] 1. The existing clamping mechanism adopts rigid structure design, can only adapt to regular appearance injection molding part, and when facing special-shaped parts or curved parts, the problems such as unstable clamping and positioning deviation are prone to appear.

[0005] 2. The traditional hole diameter detection relies on fixed plug gauge, cannot detect the slight deformation or smoothness inside hole diameter, and the detection limitation is relatively large. UTILITY MODEL CONTENTS

[0006] The utility model discloses a detection device for injection molding part, which can adapt to special-shaped parts or curved parts, can detect the slight deformation or smoothness inside hole diameter, and has high detection universality.

[0007] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] A detection device for injection molding part, comprising:

[0009] A support table, the top of the support table is slidably provided with two sliding tables, the sliding table is sequentially provided with a first arc block, a second arc block and a third arc block, the first arc block can slide along the arc track of the sliding table, the second arc block can slide along the arc track of the first arc block, and the third arc block can slide along the arc track of the second arc block, so as to form a clamping surface adapted to the outer contour of the injection molding part;

[0010] The middle part of the support table is provided with a detection assembly, the detection assembly comprises an embedded block and a displacement sensor fixedly connected to the inside of the embedded block, two sides of the embedded block are symmetrically provided with telescopic abutting blocks, one end of each of the two abutting blocks away from each other is fixedly connected with a connecting rod, both connecting rods are slidingly penetrated to the outside of the embedded block, the abutting blocks are connected with the displacement sensor through springs, and the moving distance of the abutting blocks is monitored through the displacement sensor.

[0011] In a possible design, the support table is rotatably connected with a bidirectional screw rod, two ends of the bidirectional screw rod are respectively threadedly connected with nuts, the top of the nut is fixedly connected with the sliding table, and the two sliding tables move synchronously towards or away from each other along the sliding groove of the support table when the bidirectional screw rod is rotated.

[0012] In a possible design, the detection assembly further comprises a connecting column fixedly connected to the top of the support table, the connecting column is rotatably connected with a hollow column, the top of the hollow column is connected with a driving motor, the hollow column is provided with an electric telescopic rod, and the output shaft of the electric telescopic rod is fixedly connected with the embedded block to drive the embedded block to ascend and descend.

[0013] In a possible design, the output shaft of the driving motor is coaxially fixedly connected with the hollow column, the embedded block is driven to rotate when the driving motor is started, so that the rolling ball rolls along the hole wall of the injection molded part to detect deformation.

[0014] In a possible design, the top of the support table is provided with a cross positioning groove, the center of the cross positioning groove is aligned with the axis of the embedded block, and the cross positioning groove is used for quickly positioning the injection molded part when the injection molded part is placed.

[0015] In a possible design, the outer end of the connecting rod is rotatably connected with a rolling ball, the rolling ball is used for slidingly contacting the hole wall of the injection molded part, the abutting block and the embedded block are in sliding fit, and the two ends of the spring are respectively abutted against the inner wall of the abutting block and the detection head of the displacement sensor.

[0016] In a possible design, one end of the bidirectional screw rod extends to the outside of the support table and is fixedly connected with a hand wheel, which is used for manually adjusting the clamping distance.

[0017] In a possible design, the connecting column is fixedly connected to the top of the support table through four L-shaped brackets, the vertical section of the L-shaped bracket is bolted to the support table, and the horizontal section is welded to the connecting column.

[0018] In the application, the injection molding part is placed at the cross center position on the surface of the support table, at this time the injection molding part is located directly below the connecting column, the bidirectional screw rod is rotated, the two sliding tables are driven to move close to each other by the forward and reverse thread segments on the outer wall of the bidirectional screw rod, the injection molding part is clamped and fixed, the first arc-shaped block, the second arc-shaped block and the third arc-shaped block in the sliding table can slide with each other according to the shape of the clamped injection molding part, so that different forms of injection molding parts are clamped, the electric telescopic rod is powered on, the output shaft of the electric telescopic rod is elongated, the embedded block is inserted into the hole diameter of the injection molding part, at this time the two balls are in contact with the inside of the hole diameter of the injection molding part, as the embedded block gradually extends into the hole diameter of the injection molding part, the driving motor is started, the hollow column is driven to rotate one circle and then reverse rotation in turn by the output shaft of the driving motor, the embedded block is driven to rotate by the electric telescopic rod, when the embedded block rotates downward, the two balls rotate downward in the hole diameter of the injection molding part, when the hole diameter is uneven, the connecting rod and the contact block are telescoped in the embedded block, the spring is used for displacement, and the displacement sensor is used for monitoring the movement of the two contact blocks, so that the flatness of the hole diameter is determined.

[0019] Beneficial effects: in the utility model, the nested design of the first arc-shaped block, the second arc-shaped block and the third arc-shaped block of the sliding connecting piece makes the clamping end sliding table automatically fit the surface profile of the injection molding part, effectively solves the clamping problem of special-shaped parts, and the bidirectional screw rod of the bidirectional thread adjusting mechanism realizes the synchronous centering movement of the two clamping units, ensures that the injection molding part is accurately positioned to the detection reference position, and eliminates the manual alignment error;

[0020] In the utility model, the cooperation of the connecting rod, the contact block and the displacement sensor supported by the spring is used in the rotating downward exploration process, the hole wall unevenness signal is captured in real time, and the deformation is detected;

[0021] In the utility model, the two sliding tables are close to each other, the injection molding parts of different forms can be clamped, and the elastic displacement of the two springs can be realized, when the two balls roll in the hole diameter, the hole wall unevenness can be captured under the cooperation of the downward rotation. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A structure diagram of a detection device for injection molding parts is provided in the utility model;

[0023] Figure 2 A sectional structure diagram of a support table of a detection device for injection molding parts is provided in the utility model;

[0024] Figure 3An explosion structure schematic view of a sliding table of a detection device for injection molding parts is provided in the utility model.

[0025] Figure 4 A section structure schematic view of a connecting column of a detection device for injection molding parts is provided in the utility model.

[0026] Figure 5 A section structure schematic view of an embedded block of a detection device for injection molding parts is provided in the utility model.

[0027] In the drawing: 1, support table; 2, sliding table; 3, L-shaped frame; 4, connecting column; 5, embedded block; 6, driving motor; 7, nut; 8, bidirectional screw rod; 9, first arc-shaped block; 10, second arc-shaped block; 11, third arc-shaped block; 12, hollow column; 13, electric telescopic rod; 14, connecting rod; 15, spring; 16, abutting block; 17, ball; 18, displacement sensor. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0029] Embodiment 1: refer to Figures 1 to 3 A detection device, comprising: a support table 1, the top of the support table 1 is provided with two sliding tables 2, the first arc-shaped block 9 is rotatably connected in each of the two sliding tables 2, the second arc-shaped block 10 is rotatably connected in each of the two first arc-shaped blocks 9, the third arc-shaped block 11 is rotatably connected in each of the four second arc-shaped blocks 10, the first arc-shaped block 9 is slid in the sliding table 2, the second arc-shaped block 10 is slid in the first arc-shaped block 9, and the third arc-shaped block 11 is slid in the second arc-shaped block 10, so that the sliding cooperation according to the shape of the injection molding part is completed to clamp the injection molding part. The core clamping mechanism comprises the sliding table 2 on the top of the support table 1, the first arc-shaped block 9, the second arc-shaped block 10 and the third arc-shaped block 11, the first arc-shaped block 9 can slide along the arc-shaped track of the sliding table 2, and the second arc-shaped block 10 slides in the first arc-shaped block 9 through the arc-shaped track; two third arc-shaped blocks 11 are further nested in each second arc-shaped block 10, and through the linkage sliding of the three-stage arc-shaped blocks, the profiled clamping surface matched with the shape of the injection molding part can be formed, and stable clamping is realized.

[0030] Refer to Figure 2The support table 1 is internally slidably connected with two nuts 7, and the support table 1 is internally rotatably connected with a bidirectional screw rod 8, one end of the bidirectional screw rod 8 extends to one side of the support table 1, and the two nuts 7 are respectively threadedly sleeved on the positive and negative threaded segments of the bidirectional screw rod 8, and the top portions of the two nuts 7 are fixedly connected with the bottom portions of the two sliding tables 2 respectively. When the bidirectional screw rod 8 is rotated, the two nuts 7 move towards or away from each other along the sliding grooves, driving the sliding table 2 to move synchronously, so that the precise adjustment of the clamping distance is realized.

[0031] With reference to Figure 4 The top of the support table 1 is fixedly connected with four L-shaped frames 3, the same connecting column 4 is fixedly connected between the four L-shaped frames 3, the driving motor 6 is fixedly installed at the top of the connecting column 4, the embedding block 5 is arranged at the bottom of the connecting column 4, the hollow column 12 is rotatably connected in the connecting column 4, the output shaft of the driving motor 6 extends into the connecting column 4 and is fixedly connected with the top of the hollow column 12, the electric telescopic rod 13 is fixedly connected in the hollow column 12, and the output shaft of the electric telescopic rod 13 is fixedly connected with the top of the embedding block 5. The electric telescopic rod 13 is fixed in the hollow column 12, the output shaft of the electric telescopic rod 13 is welded to the top of the embedding block 5 after penetrating through the bottom hole of the hollow column 12, the embedding block 5 can be circularly and reciprocally rotated through the driving motor 6, and the embedding block 5 can be lifted and lowered through the electric telescopic rod 13.

[0032] With reference to Figure 5 The displacement sensor 18 is fixedly connected in the embedding block 5, the two abutting blocks 16 are slidably connected in the embedding block 5, the spring 15 is arranged between the two abutting blocks 16 and the displacement sensor 18, the two ends of the spring 15 are respectively abutted with the abutting blocks 16 and the displacement sensor 18, the connecting rods 14 are fixedly connected to the ends of the two abutting blocks 16 away from each other, and the rolling balls 17 are rotatably connected to the ends of the two connecting rods 14 away from each other. When the rolling ball 17 contacts the surface of the injection molded part, the spring 15 is compressed, the abutting block 16 pushes the detection head of the displacement sensor 18 to generate a displacement signal, and the planeness data of the surface of the injection molded part can be obtained through difference calculation of the displacement sensor 18.

[0033] With reference to Figure 1 A cross groove is arranged at the top of the support table 1, and the center position of the cross groove is aligned with the embedding block 5. When the injection molded part is placed on the support table 1, the bottom flange of the injection molded part is embedded in the cross groove to realize rapid alignment and positioning, so that the shaft center of the injection molded part is coincided with the shaft center of the embedding block 5 during detection.

[0034] The present application can be used in the injection molding field, and can also be used in other fields applicable to the present application.

[0035] Embodiment 2: With reference to Figure 1 and Figure 5On the basis of embodiment one, improve: a detection device for injection molding parts, applied to injection molding field, the top of support table 1 is fixedly installed with controller, and the controller is electrically connected with driving motor 6 and displacement sensor 18 respectively.The controller is installed on the top of the support table 1, and is connected with the driving motor 6, the electric telescopic rod 13 and the displacement sensor 18 through the signal line.

[0036] However, as is well known to those skilled in the art, the working principle and wiring method of the driving motor 6 and the displacement sensor 18 are common, which belong to conventional means or common general knowledge, and will not be described here. Those skilled in the art can make any selection according to their needs or convenience.

[0037] The drawings in the specification of the present application are only of a schematic nature, and the size and shape of each component shown are not actual limitations, but only a schematic representation. In the actual implementation process, each component can be reasonably configured and adjusted according to specific needs and actual conditions.

[0038] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A testing device for injection molded parts, characterized in that, include: A support platform (1) has two sliding platforms (2) slidably mounted on its top. The sliding platforms (2) are provided with a first arc-shaped block (9), a second arc-shaped block (10) and a third arc-shaped block (11) in sequence. The first arc-shaped block (9) can slide along the arc-shaped track of the sliding platform (2), the second arc-shaped block (10) can slide along the arc-shaped track of the first arc-shaped block (9), and the third arc-shaped block (11) can slide along the arc-shaped track of the second arc-shaped block (10) to form a clamping surface that matches the outer contour of the injection molded part. The support platform (1) is provided with a detection component in the middle. The detection component includes an embedded block (5) and a displacement sensor (18) fixed inside the embedded block (5). The embedded block (5) is provided with retractable abutment blocks (16) on both sides. The ends of the two abutment blocks (16) that are far apart from each other are fixedly connected to a connecting rod (14). The two connecting rods (14) slide through to the outside of the embedded block (5). The abutment block (16) is connected to the displacement sensor (18) through a spring (15). The moving distance of the abutment block (16) is monitored by the displacement sensor (18).

2. The detection device according to claim 1, characterized in that, A bidirectional lead screw (8) is rotatably connected inside the support platform (1). Nuts (7) are threaded to both ends of the bidirectional lead screw (8). The top of the nut (7) is fixed to the sliding table (2). When the bidirectional lead screw (8) is rotated, the two sliding tables (2) move synchronously towards each other or away from each other along the groove of the support platform (1).

3. The detection device according to claim 1, characterized in that, The detection assembly also includes a connecting column (4) fixed to the top of the support platform (1). A hollow column (12) is rotatably connected inside the connecting column (4). A drive motor (6) is connected to the top of the hollow column (12). An electric telescopic rod (13) is provided inside the hollow column (12). The output shaft of the electric telescopic rod (13) is fixed to the embedded block (5) to drive the embedded block (5) to rise and fall.

4. The detection device according to claim 3, characterized in that, The output shaft of the drive motor (6) is coaxially fixed to the hollow column (12). When the drive motor (6) starts, it drives the embedded block (5) to rotate, so that the ball (17) rolls along the hole wall of the injection molded part to detect deformation.

5. The detection device according to claim 1, characterized in that, The top of the support platform (1) is provided with a cross-shaped positioning groove, the center of which is aligned with the axis of the embedded block (5) for quick positioning when placing the injection molded part.

6. The detection device according to claim 1, characterized in that, The outer end of the connecting rod (14) is rotatably connected to a ball (17), which is used to slide in contact with the wall of the injection molded part hole. The abutment block (16) and the embedded block (5) are in sliding fit. The two ends of the spring (15) abut against the inner wall of the abutment block (16) and the detection head of the displacement sensor (18) respectively.

7. The detection device according to claim 2, characterized in that, One end of the bidirectional lead screw (8) extends to the outside of the support platform (1) and is fixed with a handwheel for manually adjusting the clamping distance.

8. The detection device according to claim 3, characterized in that, The connecting column (4) is fixed to the top of the support platform (1) by four L-shaped frames (3). The vertical section of the L-shaped frame (3) is bolted to the support platform (1), and the horizontal section is welded to the connecting column (4).

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