Jujube pit removing device and method
By designing a date pitting device, automated vibration sorting, posture adjustment, and precise pitting of date bodies are achieved, solving the problem that existing equipment cannot accurately align date pits, improving pitting efficiency and yield, and is suitable for automated processing of dried and fresh dates.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-24
- Publication Date
- 2026-03-31
AI Technical Summary
Existing jujube pitting equipment cannot accurately align the pit, resulting in pitting failure, pit residue, or excessive piercing of the fruit flesh, affecting the yield and appearance of the finished product. In addition, traditional manual pitting is inefficient and labor-intensive, making it difficult to meet the needs of large-scale production.
A date pitting device was designed, including a feeding and conveying mechanism, a centering adjustment mechanism, a pitting mechanism, and a driving mechanism. Through vibration sorting, posture pre-adjustment, step conveying, and precise pitting, the device achieves automated processing of the date body. Limiting rings and telescopic rods are used to prevent the date body from shifting, and a separation plate is used to separate the date pit and date juice.
It improves pitting efficiency and yield, reduces fruit pulp damage and pit residue, lowers labor intensity, is highly adaptable, and is suitable for automated processing of dried and fresh dates.
Smart Images
Figure CN121753941A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of food processing equipment technology, and particularly relates to a date pitting device and method. Background Technology
[0002] As a popular nutritious food and industrial raw material, jujubes are increasingly being processed with automation. In the deep processing of jujubes, pitting is a crucial pre-treatment step, and its efficiency and quality directly affect the quality and cost of subsequent products. Traditional manual pitting methods are not only inefficient and labor-intensive, but also pose hygiene risks and a high rate of fruit damage, making them unsuitable for large-scale, standardized production.
[0003] Existing jujube pitting equipment still cannot adjust and position the pitting needles correctly during the pitting process. Due to the varying shapes of jujubes and the randomness of the pitting needle's position during transport and positioning, precise alignment of the pit is difficult, easily leading to needle deviation, pitting failure, pit residue, or excessive piercing and damage to the fruit flesh, thus affecting the yield and appearance of the finished product. Therefore, there is an urgent need for a jujube pitting device and method that is precise in positioning, has a low damage rate, and is highly adaptable. Summary of the Invention
[0004] The purpose of this invention is to address the existing problems by providing a jujube pitting device and method, thus solving the technical problems mentioned in the background art.
[0005] This invention is achieved through the following technical solution: a jujube pitting device, comprising a cabinet, a chassis fixedly connected to the left side wall of the cabinet, a loading cylinder rotatably connected to the chassis, a feeding conveying mechanism located obliquely behind the loading cylinder, a centering adjustment mechanism between the feeding conveying mechanism and the loading cylinder, the centering adjustment mechanism being used to identify the posture of the jujube and pre-adjust it, a discharge hopper fixedly connected to the front side wall of the chassis, a side door panel on the rear side wall of the chassis, a discharge valve at the bottom of the chassis, several loading slots on the surface of the loading cylinder, a perforation on the inner wall of each loading slot, and a pitting mechanism above the loading cylinder.
[0006] Preferably, the alignment adjustment mechanism includes a baffle and an adjustment frame, the baffle and the adjustment frame are integrally formed, the adjustment frame has a plurality of alignment grooves recessed inward, and the left and right ends of the baffle are fixedly connected to shafts, the shafts being rotatably connected to the inner wall of the housing.
[0007] Preferably, the core-piercing mechanism includes a lifting seat, a needle fixedly connected to the bottom of the lifting seat, a telescopic rod fixedly connected to the bottom of the lifting seat, the telescopic rod being located outside the needle, and a limiting ring fixedly connected to the lower end of the telescopic rod, the limiting ring being located below the corresponding needle.
[0008] Preferably, the loading cylinder is hollow, and a material guiding mechanism is provided on the inner side of the loading cylinder; The material guiding mechanism includes two isolation plates, both of which are fixedly connected to the machine housing by bolts. A separation plate is fixedly connected between the two isolation plates. The separation plate is inclined and has several through holes.
[0009] Preferably, the feeding and conveying mechanism includes a guide hopper and a guide plate. The guide hopper is fixedly connected to the outer wall of the machine housing, and the inner wall of the guide hopper is provided with a plurality of guide grooves. The guide plate is fixedly connected to the inner wall of the guide hopper. A vibration motor is fixedly connected to the bottom of the feed hopper.
[0010] Preferably, the cabinet is equipped with a drive mechanism, which includes a stepper motor and a lifting frame. The stepper motor is fixedly connected to the top of the cabinet, and a drive rod is fixedly connected to the output end of the stepper motor. A connecting rod is rotatably connected to the inner wall of the drive rod, and a lever is fixedly connected to the drive rod. The cabinet is equipped with a limiting mechanism.
[0011] Preferably, the limiting mechanism includes a fixed frame fixedly connected to the top of the cabinet, a limiting rod symmetrically connected to the top of the inner wall of the fixed frame, the lower end of the limiting rod being fixedly connected to the top surface of the cabinet, a fixed plate being fixedly connected to the inner wall of the fixed frame, a bearing seat being fixedly connected to the fixed plate, a rotating rod being rotatably connected to the inner wall of the bearing seat, and the right end of the rotating rod being fixedly connected to the inner wall of the loading cylinder.
[0012] Preferably, the outer wall of the lifting frame is symmetrically connected with sliding seats, each of the sliding seats is slidably connected to a corresponding limiting rod, the left side wall of the cabinet is provided with a rectangular groove, the left side wall of the cabinet is symmetrically connected with a limiting frame, the limiting frame is located outside the rectangular groove, the left side wall of the lifting frame is fixedly connected to the right side wall of the lifting seat, and the outer wall of the lifting seat is slidably connected to the inner wall of the limiting frame.
[0013] Preferably, a driven gear is fixedly connected to the left end of the rotating rod, the lever is connected to the driven gear in a transmission connection, and the end of the connecting rod away from the driving rod is rotatably connected to the right side wall of the lifting frame.
[0014] A method for pitting jujubes includes the following steps: S1. Feeding and sorting: Pour the pitted dates into the feed hopper of the feeding conveyor mechanism, start the vibration motor, and use vibration to make the dates slide down the feed trough in an orderly manner in a single row, and fall into the centering adjustment mechanism after being guided by the guide plate. S2. Posture adjustment and positioning: The jujube body rolls in the centering groove of the centering adjustment mechanism, so that its long axis direction is automatically adjusted to be roughly aligned with the axis of the needle, and then it rolls into the corresponding loading groove of the loading cylinder. S3. Synchronous drive and station switching: Start the stepper motor of the drive mechanism to rotate the drive rod; drive the lifting frame and the spike mechanism to move up and down along the limit rod and the limit frame through the connecting rod; at the same time, the driven gear is intermittently moved by the lever on the drive rod, which drives the rotating rod and the loading cylinder to rotate intermittently, so as to realize the step-by-step feeding and precise positioning of the loading trough. S4, Piercing the pit: When the loading trough containing the jujube rotates to directly below the piercing needle, the lifting seat moves downward. The limiting ring first contacts and covers the upper surface of the jujube to achieve the limiting. Then the telescopic rod retracts, the piercing needle pierces the jujube and pushes the jujube pit out of the perforation. The jujube pit falls into the internal cavity of the loading cylinder. S5. Automatic product separation: The pitted jujube pulp remains in the loading tank. When the loading cylinder rotates to the bottom, it falls into the feed hopper and is discharged under the action of gravity. The jujube pits that are pushed out pass through the perforation and fall onto the separation plate.
[0015] The beneficial effects of this invention are: 1. This invention provides a date pitting device. Through the coordinated operation of a feeding and conveying mechanism, a centering adjustment mechanism, a pitting mechanism, a driving mechanism, and a guiding mechanism, this device achieves fully automated processing of the date body from vibration sorting, posture pre-adjustment, step conveying, precise pitting, to automatic separation of date flesh and date pit. This improves pitting efficiency and consistency, and reduces manual intervention and labor intensity.
[0016] 2. This invention provides a date pitting device that utilizes a vibrating motor-driven guide hopper and a guide plate with a specific guide groove to achieve orderly single-row conveying of date bodies, effectively avoiding date body accumulation and blockage; at the same time, by setting an adjustment frame with a centering groove, the date body automatically adjusts its posture during the rolling process, so that its long axis is roughly aligned with the thorn, which significantly improves the accuracy and success rate of pitting, and reduces fruit pulp damage and pit residue.
[0017] 3. This invention provides a jujube pitting device. The pitting mechanism is designed with a limiting ring and a telescopic rod. During the downward movement of the needle, the limiting ring first contacts and covers the upper surface of the jujube body, limiting and pre-compressing it. The telescopic rod then retracts, and the needle then pierces the jujube body. This design can effectively prevent the jujube body from shifting during pitting, ensuring the stability of the pitting action and the accuracy of the pitting position.
[0018] 4. This invention provides a date pitting device, which uses a single stepper motor to drive the lifting motion of the pitting mechanism and the intermittent rotation of the loading cylinder through a clever linkage and lever mechanism. This simplifies the transmission structure, reduces the complexity of the equipment and manufacturing costs, and ensures precise synchronization between the pitting station and the loading station, resulting in stable and reliable operation.
[0019] 5. This invention provides a date pitting device that can effectively separate the date pits and date juice produced by pitting after pitting through a separation plate. The date pits are guided by the separation plate and discharged separately, while the date juice flows into the bottom through the through hole for centralized discharge. This not only realizes automatic sorting of products and keeps the date flesh clean, but also facilitates cleaning. It is especially suitable for processing juicy dates such as fresh dates and has strong versatility. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle; Figure 3 This is another overall structural diagram of the present invention; Figure 4 This is a schematic diagram of the internal structure of the cabinet of the present invention; Figure 5 This is a partial structural diagram of the frame of the present invention; Figure 6 This is a partial structural diagram of the core-piercing mechanism of the present invention; Figure 7 This is a schematic diagram of the centering mechanism of the present invention; Figure 8 This is a schematic diagram of the drive mechanism of the present invention.
[0021] In the diagram: 1. Cabinet; 2. Chassis; 3. Feeding and conveying mechanism; 301. Guide hopper; 302. Guide trough; 303. Guide plate; 4. Loading cylinder; 401. Loading trough; 402. Perforation; 5. Isolation plate; 6. Separation plate; 7. Alignment adjustment mechanism; 701. Baffle; 702. Adjustment frame; 703. Alignment trough; 704. Shaft; 8. Limiting mechanism; 801. Fixing frame; 802. Limiting rod; 803. Fixing plate; 804. 9. Bearing housing; 10. Drive mechanism; 11. Stepper motor; 12. Drive rod; 13. Connecting rod; 14. Lifting frame; 15. Sliding seat; 16. Rotating rod; 17. Driven gear; 18. Turning rod; 19. Spike mechanism; 1001. Lifting seat; 1002. Telescopic rod; 1003. Limiting ring; 1004. Spike; 11. Feed hopper; 12. Vibrating motor; 13. Limiting frame; 14. Discharge valve; 15. Side door panel. Detailed Implementation
[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0023] Example 1: Please see Figure 1-8 As shown, the present invention provides a technical solution: a jujube pitting device, including a cabinet 1, a housing 2 fixedly connected to the left side wall of the cabinet 1, a loading cylinder 4 rotatably connected to the housing 2, a feeding conveying mechanism 3 provided on the housing 2, the feeding conveying mechanism 3 being located obliquely behind the loading cylinder 4, a centering adjustment mechanism 7 provided between the feeding conveying mechanism 3 and the loading cylinder 4, the centering adjustment mechanism 7 being used to identify the posture of the jujube and pre-adjust it, a discharge hopper 11 fixedly connected to the front side wall of the housing 2, the front end of the discharge hopper 11 being inclined downward, a side door panel 15 provided on the rear side wall of the housing 2, the side door panel 15 being installed on the housing 2 by hinges, facilitating cleaning and maintenance of the interior of the housing 2, a discharge valve 14 provided at the bottom of the housing 2, a plurality of loading slots 401 being opened on the surface of the loading cylinder 4, a perforation 402 being opened on the inner wall of each loading slot 401, and a pitting mechanism 10 being provided above the loading cylinder 4; The feeding and conveying mechanism 3 includes a guide hopper 301 and a guide plate 303. The guide hopper 301 is fixedly connected to the outer wall of the housing 2. The inner wall of the guide hopper 301 is provided with several guide grooves 302. The guide plate 303 is fixedly connected to the inner wall of the guide hopper 301. A vibration motor 12 is fixedly connected to the bottom of the guide hopper 301. The vibration of the vibration motor 12 causes the dates entering the guide hopper 301 to slide down the guide grooves 302 in an orderly single row, and then be guided and conveyed to the centering adjustment mechanism 7 by the guide plate 303.
[0024] The alignment adjustment mechanism 7 includes a baffle 701 and an adjustment frame 702. The baffle 701 and the adjustment frame 702 are integrally formed. The adjustment frame 702 has several inwardly recessed alignment grooves 703. The left and right ends of the baffle 701 are fixedly connected to shafts 704, which are rotatably connected to the inner wall of the housing 2. The alignment grooves 703 on the adjustment frame 702 are used to adjust the posture of the falling date, so that the date rolls into the loading groove 401 with its long axis roughly aligned with the axis of the needle 1004.
[0025] The piercing mechanism 10 includes a lifting seat 1001, a piercing needle 1004 fixedly connected to the bottom of the lifting seat 1001, and a telescopic rod 1002 fixedly connected to the bottom of the lifting seat 1001. The telescopic rod 1002 is located outside the piercing needle 1004, and a limiting ring 1003 is fixedly connected to the lower end of the telescopic rod 1002. The limiting ring 1003 is located below the corresponding piercing needle 1004. When the lifting seat 1001 moves downward, the piercing needle 1004 pierces the jujube body in the loading groove 401. The limiting ring 1003 contacts the upper surface of the jujube body and limits the jujube body. The telescopic rod 1002 retracts accordingly, ensuring that the piercing needle 1004 passes through the jujube pit and pushes it out from the perforation 402.
[0026] The loading cylinder 4 is hollow, and a material guiding mechanism is provided on the inner side of the loading cylinder 4. The material guiding mechanism includes two isolation plates 5, which are fixedly connected to the machine box 2 by bolts. A separation plate 6 is fixedly connected between the two isolation plates 5. The separation plate 6 is inclined and has several through holes. The separation plate 6 is used to receive the date pits that fall after pitting and let them slide down to the bottom of the machine box 2 through the through holes and be discharged through the discharge valve 14. The date juice produced during pitting passes through the through holes on the separation plate 6 and falls into the bottom of the machine box 2, and is finally discharged through the discharge valve 14. This makes the device suitable not only for pitting dried dates, but also for pitting fresh dates.
[0027] Example 2: Please see Figure 1-8 As shown, based on Embodiment 1, the present invention provides a technical solution: a drive mechanism 9 is provided inside the cabinet 1. The drive mechanism 9 includes a stepper motor 901 and a lifting frame 904. The stepper motor 901 is fixedly connected to the top of the cabinet 1. A drive rod 902 is fixedly connected to the output end of the stepper motor 901. A connecting rod 903 is rotatably connected to the inner wall of the drive rod 902. A lever 908 is fixedly connected to the drive rod 902. A limiting mechanism 8 is provided on the cabinet 1.
[0028] The limiting mechanism 8 includes a fixed frame 801 fixedly connected to the top of the cabinet 1. Limiting rods 802 are symmetrically connected to the top of the inner wall of the fixed frame 801. The lower end of the limiting rods 802 is fixedly connected to the top surface of the cabinet 1. A fixed plate 803 is fixedly connected to the inner wall of the fixed frame 801. A bearing seat 804 is fixedly connected to the fixed plate 803. A rotating rod 906 is rotatably connected to the inner wall of the bearing seat 804. The right end of the rotating rod 906 is fixedly connected to the inner wall of the loading cylinder 4. The outer wall of the lifting frame 904 is symmetrically connected with sliding seats 905. Each sliding seat 905 is slidably connected to the corresponding limiting rod 802. A rectangular slot is opened on the left side wall of the cabinet 1. A limiting frame 13 is symmetrically connected to the left side wall of the cabinet 1. The limiting frame 13 is located outside the rectangular slot. The left side wall of the lifting frame 904 is fixedly connected to the right side wall of the lifting seat 1001. The outer wall of the lifting seat 1001 is slidably connected to the inner wall of the limiting frame 13. A driven gear 907 is fixedly connected to the left end of the rotating rod 906. The lever 908 is drivenly connected to the driven gear 907. The end of the connecting rod 903 away from the driving rod 902 is rotatably connected to the right side wall of the lifting frame 904.
[0029] In this embodiment, a stepper motor 901 drives a drive rod 902 to rotate, which in turn drives a lifting frame 904 to move up and down along a limit rod 802 via a connecting rod 903, thereby driving the core-piercing mechanism 10 to rise and fall. On the other hand, a lever 908 on the drive rod 902 actuates a driven gear 907 to rotate intermittently, which in turn drives a rotating rod 906 to rotate the loading cylinder 4 intermittently, thereby achieving step-by-step feeding and positioning of the loading trough 401.
[0030] Example 3: This invention provides a technical solution: a method for pitting jujubes, comprising the following steps: S1. Feeding and sorting: Pour the pitted dates into the guide hopper 301 of the feeding conveyor 3, start the vibration motor 12, and use vibration to make the dates slide down the guide trough 302 in an orderly single row, and fall into the centering adjustment mechanism 7 after being guided by the guide plate 303. S2. Posture adjustment and positioning: The jujube body rolls in the centering groove 703 of the centering adjustment mechanism 7, so that its long axis direction is automatically adjusted to be roughly aligned with the axis of the needle 1004, and then rolls into the corresponding loading groove 401 of the loading cylinder 4. S3. Synchronous drive and station switching: Start the stepper motor 901 of the drive mechanism 9 to drive the rod 902 to rotate; drive the lifting frame 904 and the spike mechanism 10 to move up and down along the limit rod 802 and the limit frame 13 through the connecting rod 903; at the same time, the driven gear 907 is intermittently driven by the lever 908 on the drive rod 902, which drives the rotating rod 906 and the loading cylinder 4 to rotate intermittently, so as to realize the step-by-step feeding and precise positioning of the loading trough 401; S4, Piercing the pit: When the loading groove 401 carrying the jujube rotates to directly below the piercing needle 1004, the lifting seat 1001 moves downward, the limiting ring 1003 first contacts and covers the upper surface of the jujube to achieve the limiting, then the telescopic rod 1002 retracts, the piercing needle 1004 pierces the jujube and pushes the pit out from the perforation 402, and the pit falls into the internal cavity of the loading cylinder 4; S5. Automatic product separation: The pitted jujube pulp remains in the loading tank 401. When the loading cylinder 4 rotates to the bottom, it falls into the feed hopper 11 and is discharged under the action of gravity. The jujube pits that are pushed out fall through the perforation 402 onto the separation plate 6.
[0031] Working principle: In use, the dates to be pitted are poured into the guide hopper 301 of the feeding conveyor mechanism 3, and the vibration motor 12 is started simultaneously. Under the action of vibration, the dates slide down the guide groove 302 in a single orderly manner. After being guided by the guide plate 303, they fall into the centering adjustment mechanism 7. The dates roll and adjust in the centering groove 703 of the adjustment frame 702 so that their long axis is roughly aligned with the axis of the needle 1004. Then they roll into the corresponding loading groove 401 of the loading cylinder 4. Then the stepper motor 901 of the drive mechanism 9 is started, and the drive rod 902 rotates. The drive rod 902 drives the lifting frame 904 and the lifting seat 1001 fixed thereto to move up and down along the limiting rod 802 and the limiting frame 13 through the connecting rod 903. When the lifting seat 1001 moves down, the limiting ring 1003 covers the outside of the date. When the telescopic rod 1002 retracts, it limits the movement of the date. Then, the needle 1004 pierces the jujube body in the loading groove 401, and the needle 1004 penetrates the jujube body and pushes the jujube pit out from the perforation 402 and falls into the loading cylinder 4. During this process, the lever 908 on the drive rod 902 intermittently actuates the driven gear 907, causing the rotating rod 906 to drive the loading cylinder 4 to rotate intermittently by one station, so that the next loading groove 401 containing jujube bodies rotates to directly below the needle 1004. The pitted jujube flesh remains in the loading groove 401. When the loading cylinder 4 rotates to the bottom, the jujube flesh falls onto the feed hopper 11 under the action of gravity and falls into the external collection device for collection through the feed hopper 11. The jujube pit falls onto the separation plate 6 under the action of gravity and slides down the inclined separation plate 6 for discharge. The jujube juice produced when pitting the pit passes through the through hole on the separation plate 6 and falls into the bottom of the machine box 2, and is finally discharged through the discharge valve 14.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A jujube pitting device, comprising a cabinet (1), wherein a chassis (2) is fixedly connected to the left side wall of the cabinet (1), characterized in that: The machine housing (2) is rotatably connected to a loading cylinder (4). The machine housing (2) is provided with a feeding conveyor mechanism (3). The feeding conveyor mechanism (3) is located at the rear of the loading cylinder (4). A centering adjustment mechanism (7) is provided between the feeding conveyor mechanism (3) and the loading cylinder (4). The centering adjustment mechanism (7) is used to identify the posture of the jujube body and pre-adjust it. A discharge hopper (11) is fixedly connected to the front side wall of the machine housing (2). A side door panel (15) is provided on the rear side wall of the machine housing (2). A discharge valve (14) is provided at the bottom of the machine housing (2). Several loading slots (401) are opened on the surface of the loading cylinder (4). A perforation (402) is opened on the inner wall of each loading slot (401). A core-piercing mechanism (10) is provided above the loading cylinder (4).
2. The date pitting device according to claim 1, characterized in that: The alignment adjustment mechanism (7) includes a baffle (701) and an adjustment frame (702). The baffle (701) and the adjustment frame (702) are integrally formed. The adjustment frame (702) has several inwardly recessed alignment grooves (703). The left and right ends of the baffle (701) are fixedly connected to shafts (704). The shafts (704) are rotatably connected to the inner wall of the housing (2).
3. The date pitting device according to claim 1, characterized in that: The piercing mechanism (10) includes a lifting seat (1001), a piercing needle (1004) is fixedly connected to the bottom of the lifting seat (1001), a telescopic rod (1002) is fixedly connected to the bottom of the lifting seat (1001), the telescopic rod (1002) is located outside the piercing needle (1004), and a limiting ring (1003) is fixedly connected to the lower end of the telescopic rod (1002), the limiting ring (1003) is located below the corresponding piercing needle (1004).
4. The date pitting device according to claim 1, characterized in that: The loading cylinder (4) is hollow, and a material guiding mechanism is provided on the inner side of the loading cylinder (4); The material guiding mechanism includes two isolation plates (5), both of which are fixedly connected to the machine housing (2) by bolts. A separation plate (6) is fixedly connected between the two isolation plates (5). The separation plate (6) is inclined and has several through holes.
5. The date pitting device according to claim 1, characterized in that: The feeding and conveying mechanism (3) includes a guide hopper (301) and a guide plate (303). The guide hopper (301) is fixedly connected to the outer wall of the machine box (2). The inner wall of the guide hopper (301) is provided with a plurality of guide grooves (302). The guide plate (303) is fixedly connected to the inner wall of the guide hopper (301). A vibration motor (12) is fixedly connected to the bottom of the feed hopper (301).
6. The date pitting device according to claim 1, characterized in that: The cabinet (1) is equipped with a drive mechanism (9), which includes a stepper motor (901) and a lifting frame (904). The stepper motor (901) is fixedly connected to the top of the cabinet (1). The output end of the stepper motor (901) is fixedly connected to a drive rod (902). The inner wall of the drive rod (902) is rotatably connected to a connecting rod (903). A lever (908) is fixedly connected to the drive rod (902). The cabinet (1) is equipped with a limit mechanism (8).
7. A date pitting device according to claim 6, characterized in that: The limiting mechanism (8) includes a fixed frame (801) fixedly connected to the top of the cabinet (1). The top of the inner wall of the fixed frame (801) is symmetrically connected to a limiting rod (802). The lower end of the limiting rod (802) is fixedly connected to the top surface of the cabinet (1). A fixed plate (803) is fixedly connected to the inner wall of the fixed frame (801). A bearing seat (804) is fixedly connected to the fixed plate (803). A rotating rod (906) is rotatably connected to the inner wall of the bearing seat (804). The right end of the rotating rod (906) is fixedly connected to the inner wall of the loading cylinder (4).
8. A date pitting device according to claim 6, characterized in that: The outer wall of the lifting frame (904) is symmetrically connected with sliding seats (905), and each sliding seat (905) is slidably connected to the corresponding limiting rod (802). The left side wall of the cabinet (1) is provided with a rectangular groove, and the left side wall of the cabinet (1) is symmetrically connected with a limiting frame (13). The limiting frame (13) is located outside the rectangular groove. The left side wall of the lifting frame (904) is fixedly connected to the right side wall of the lifting seat (1001), and the outer wall of the lifting seat (1001) is slidably connected to the inner wall of the limiting frame (13).
9. A date pitting device according to claim 7, characterized in that: The left end of the rotating rod (906) is fixedly connected to the driven gear (907), the lever (908) is connected to the driven gear (907) in a transmission connection, and the end of the connecting rod (903) away from the driving rod (902) is rotatably connected to the right side wall of the lifting frame (904).
10. A method for pitting jujubes, characterized in that, A date pitting device according to any one of claims 1 to 9 comprises the following steps: S1. Feeding and sorting: Pour the pitted dates into the feed hopper (301) of the feeding conveyor (3), start the vibration motor (12), and use vibration to make the dates slide down in an orderly row along the feed trough (302), and fall into the centering adjustment mechanism (7) after being guided by the feed plate (303). S2, Posture Adjustment and Positioning: The jujube body rolls in the centering groove (703) of the centering adjustment mechanism (7) so that its long axis direction is automatically adjusted to be roughly aligned with the axis of the needle (1004), and then rolls into the corresponding loading groove (401) of the loading cylinder (4); S3. Synchronous drive and station switching: Start the stepper motor (901) of the drive mechanism (9) and drive the rod (902) to rotate; drive the lifting frame (904) and the core-piercing mechanism (10) to move up and down along the limit rod (802) and the limit frame (13) through the connecting rod (903); at the same time, the driven gear (907) is intermittently driven by the lever (908) on the drive rod (902), which drives the rotating rod (906) and the loading cylinder (4) to rotate intermittently, so as to realize the step-by-step feeding and precise positioning of the loading trough (401); S4, Piercing the pit: When the loading groove (401) carrying the jujube rotates to directly below the piercing needle (1004), the lifting seat (1001) moves downward, the limiting ring (1003) first contacts and covers the upper surface of the jujube to achieve the limiting, then the telescopic rod (1002) retracts, the piercing needle (1004) pierces the jujube and pushes the pit out from the perforation (402), and the pit falls into the internal cavity of the loading cylinder (4); S5. Automatic separation of products: The pitted jujube pulp is left in the loading tank (401). When the loading cylinder (4) rotates to the bottom, it falls into the feed hopper (11) and is discharged under the action of gravity. The jujube pits that are pushed out pass through the perforation (402) and fall onto the separation plate (6).